RISC-V glibc port, v5

RISC-V glibc port, v5

[Palmer Dabbelt]

This v5 patch set contains what we hope is a viable RISC-V port for inclusion
into glibc-2.27.  For sanity's sake, we'd like to only mark the rv64gc/lp64d
and rv64gc/lp64 ports as stable right now and leave the remaining ports a work
in progress -- the rv32 ports are blocked on Linux being a bit flaky, and the
rv64imac/lp64 port just flat out takes too long to run in simulation (or on an
FPGA, which is even slower).  The rv64gc/lp64d port is the primary target of
interest: it will be the first target that distributions port to, and the chip
that SiFive announced will be rv64gc (so the natural ABI is lp64d).

I believe we've taken into account all the feedback, and are now below 20 test
suite failures on both of the ISA/ABI pairs we want to support assuming you get
the environment exactly correct.  This means:

* A system that's fast enough to avoid a handful of timeouts.
* A handful of QEMU patches.  Our QEMU port is also in the middle of being
  submitted for upstream, but these patches will all be included as part of the
  next submission.
* Some additional WIP GCC patches.
* The latest Linux kernel headers.

Here's our final list of failures for rv64gc/lp64d

   FAIL: elf/tst-tls12
       GCC patch in progress
   FAIL: io/ftwtest
       XFAIL on cross compile (path)
   FAIL: localedata/mtrace-tst-leaks
   FAIL: localedata/tst-leaks
       timeout (passes on a re-run)
   FAIL: malloc/tst-dynarray-fail
       timeout (passes on a re-run)
   FAIL: malloc/tst-malloc-tcache-leak
       timeout (passes on a re-run)
   FAIL: malloc/tst-malloc-usable-tunables
   FAIL: malloc/tst-malloc_info
       timeout
   FAIL: misc/tst-tsearch
       timeout (passes on a re-run)
   FAIL: nptl/test-cond-printers
       XFAIL on cross compile (python)
   FAIL: nptl/test-condattr-printers
       XFAIL on cross compile (python)
   FAIL: nptl/test-mutex-printers
       XFAIL on cross compile (python)
   FAIL: nptl/test-mutexattr-printers
       XFAIL on cross compile (python)
   FAIL: nptl/test-rwlock-printers
       XFAIL on cross compile (python)
   FAIL: nptl/test-rwlockattr-printers
       XFAIL on cross compile (python)
   FAIL: nptl/tst-execstack
   FAIL: nptl/tst-robust-fork
       timeout
   FAIL: nptl/tst-stack4
       timeout
   FAIL: nptl/tst-tls3-malloc
       timeout
   FAIL: nptl/tst-umask1
   FAIL: nss/bug17079
       timeout (passes on a re-run)
   FAIL: resolv/mtrace-tst-resolv-res_ninit
   FAIL: resolv/tst-resolv-basic
       warning: could not become root outside namespace
   FAIL: resolv/tst-resolv-res_ninit
       timeout (passes on a re-run)
   FAIL: resolv/tst-resolv-search
       warning: could not become root outside namespace
   FAIL: resolv/tst-resolv-threads
   FAIL: rt/tst-mqueue2
   FAIL: rt/tst-mqueue7
   FAIL: stdio-common/bug22
       XFAIL on limited memory
   FAIL: support/tst-xreadlink
   FAIL: sysvipc/test-sysvmsg
   FAIL: sysvipc/test-sysvsem
   FAIL: sysvipc/test-sysvshm
   FAIL: timezone/tst-tzset
       timeout (IIRC an XFAIL on disk space)

Which leaves a total of 15 archicture-specific failures.  The test suite
results for rv64gc/lp64 are slightly better than this, Darius can provide links
to full results on his website like usual.

   FAIL: localedata/mtrace-tst-leaks
   FAIL: malloc/tst-malloc-usable-tunables
   FAIL: nptl/tst-execstack
   FAIL: nptl/tst-robust-fork
       timeout
   FAIL: nptl/tst-stack4
       timeout
   FAIL: nptl/tst-tls3-malloc
       timeout
   FAIL: nptl/tst-umask1
   FAIL: resolv/mtrace-tst-resolv-res_ninit
   FAIL: resolv/tst-resolv-threads
   FAIL: rt/tst-mqueue2
   FAIL: rt/tst-mqueue7
   FAIL: support/tst-xreadlink
   FAIL: sysvipc/test-sysvmsg
   FAIL: sysvipc/test-sysvsem
   FAIL: sysvipc/test-sysvshm

We'll work through automating this process a bit and getting results on the
wiki if the port as it stands is to everyone's satisfaciton.  I'm sorry we're
very late in the release cycle, and while I can understand if we're not up to
stuff for this release I'd really like to get in if possible -- we have a bunch
of distributions (Fedora, Debian, OpenEmbedded, and OpenWRT) who are eagerly
waiting us to put a stake in the ground on ABI stability so they can get
started porting for real.  I think we're at the point where we're not going to
work out any large issues in the port without distributions starting to come
up.

Thanks to everyone who has helped, specifically:

* Joseph Myers: for pointing out all the brain-dead stuff we've done.
* Jim Wilson: for pitching in at the last minute to help fix a few bugs.
* Darius Rad: for getting together an environment that can actually run the
  test suite, fixing a bunch of test suite failures, and then testing it many
  nights while I slept :).
* DJ, Andrew, and Darius: for co-maintaining the port.

A short log of the changes since our v5 includes

* A proper implementation of lroundf on rv64.
* Moving back to a nofpu directory, which got eaten by a previous patch set.
* Support for dl-cache.
* Many comment and whitespace fixes.
* Better documentation of __riscv_flush_icache, along with some namespace
  cleanups.
* We now call the exit system call instead of _exit after a thread terminates.
* Correct handling of S1 and S2 in ucontext-related code.
* Correct SP handling when arguments are on the stack in ucontext-related code.
* Correctly saving sigmask on setcontext.
* We now test for floating-point exceptions.

[v4] A highlight of the changes since our v3 includes:

* Some ABI list cleanups, to match a few changes between when we last rebased
  and now.
* ucontext.h namespace fixes.
* Copyright year has been updated to 2018, and "contributed by" lines have been
  removed.
* int in specified in all places were optional.
* The floating-point support no longer uses ABI types, but uses explicit bit
  widths.
* Some floating point test macros have been defined to inform the test suite
  how our ISA operates.
* We now examine the ELF flags.
* I've added ChangeLog entries for all the commits except those that just add
  new files.

[v3] Here's a summary of the changes since the previous patch set:

* We now have 4 ABI/ISA pairs in build-many-glibcs.py, which is clean (with the
  newest linux headers, see the patch for details).
* Support for ilp32f and lp64f have been removed.
* Support for systems without the A extension has been removed.
* There are now ABI lists.
* Many whitespace fixes to meet glibc's standards.
* Included C and ASM files from other ports have been copied into ours.
* with_fp_cond is now set, but I don't have a soft-fp directory yet.
* We no longer maintain a -mno-plt list in our port, that existed to work
  around a linker bug and is now defunct.
* A handful of header files (mostly ucontext.h) have been cleaned up to be
  namespace clean.

[v2] A (very brief, as it's been 6 months) summary of the changes since the v1
patch set includes:

* Many copyright cleanups.
* We're using the generic versions of a handful of functions and headers,
  including ieee754.h, mathdef.h mathinline.h, fabs{,f}, and
  fe{disable,enable,get}except.
* Removal of lots of head code, including pthread_lock, atomic_fast.
* A handful of ABI fixes to match our upstreamed Linux port, including
  sigcontext, instruction-cache flushing, and some syscall sanitization.
* We've changed to use libm_alias_{float,double}, like upstream
* Compiler builtins are used for atomics where possible.
* We now mandate the A extension in Linux, support for non-A systems has been
  removed from glibc.

[PATCH 01/17] Skeleton documentation for the RISC-V port
[PATCH 02/17] Add RISC-V entries to config.h.in
[PATCH 03/17] Add support for the RISC-V-specific ELF flags
[PATCH 04/17] Add documentation for __riscv_flush_icache
[PATCH 05/17] RISC-V: ABI Implementation
[PATCH 06/17] RISC-V: Startup and Dynamic Loading Code
[PATCH 07/17] RISC-V: Thread-Local Storage Support
[PATCH 08/17] RISC-V: Generic <math.h> and soft-fp Routines
[PATCH 09/17] RISC-V: RV32F Support
[PATCH 10/17] RISC-V: RV32D, RV64F, and RV64D Support
[PATCH 11/17] RISC-V: Atomic and Locking Routines
[PATCH 12/17] RISC-V: Linux Syscall Interface
[PATCH 13/17] RISC-V: Linux ABI
[PATCH 14/17] RISC-V: Linux Startup and Dynamic Loading Code
[PATCH 15/17] RISC-V: Add ABI Lists
[PATCH 16/17] RISC-V: Build Infastructure
[PATCH 17/17] Add RISC-V to build-many-glibcs.py

[PATCH 01/17] Skeleton documentation for the RISC-V port

[Palmer Dabbelt]

During the upstreaming process it was suggested that I add a handful of
small documentation entries about the RISC-V port, which I've collected
here.

2018-01-13  Palmer Dabbelt  <palmer@sifive.com>

        * manual/math.texi: RISC-V supports _Float128 and _Float64x
---
 NEWS             | 15 +++++++++++----
 README           |  2 ++
 manual/math.texi |  2 +-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/NEWS b/NEWS
index ecefc5236489..4cd77c1e2f98 100644
--- a/NEWS
+++ b/NEWS
@@ -41,13 +41,13 @@ Major new features:
   process aborts as the result of assertion failures.
 
 * On platforms where long double has the IEEE binary128 format (aarch64,
-  alpha, mips64, s390 and sparc), the math library now implements _Float128
-  interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.  These
-  are the same interfaces added in version 2.26 for some platforms where
+  alpha, mips64, riscv, s390 and sparc), the math library now implements
+  _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
+  These are the same interfaces added in version 2.26 for some platforms where
   this format is supported but is not the format of long double.
 
 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
-  mips64, powerpc64le, s390, sparc and x86_64), the math library now
+  mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
   implements interfaces for that type, as defined by ISO/IEC TS
   18661-3:2015.  These are corresponding interfaces to those supported for
   _Float128.
@@ -98,6 +98,13 @@ Major new features:
   to fail to load locales and fall back to the builtin C/POSIX locales.
   See notes below for other changes affecting compatibility.
 
+* Support for the RISC-V ISA running on Linux has been added.  This port
+  requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
+  for the following ISA and ABI pairs:
+
+    - rv64imafdc lp64
+    - rv64imafdc lp64d
+
 Deprecated and removed features, and other changes affecting compatibility:
 
 * Statically compiled applications attempting to load locales compiled for the
diff --git a/README b/README
index d0e99ea7d5a0..425a82956fc8 100644
--- a/README
+++ b/README
@@ -39,6 +39,8 @@ The GNU C Library supports these configurations for using Linux kernels:
 	powerpc64*-*-linux-gnu	Big-endian and little-endian.
 	s390-*-linux-gnu
 	s390x-*-linux-gnu
+	riscv32-*-linux-gnu
+	riscv64-*-linux-gnu
 	sh[34]-*-linux-gnu
 	sparc*-*-linux-gnu
 	sparc64*-*-linux-gnu
diff --git a/manual/math.texi b/manual/math.texi
index a9f2a9813832..d19a14b47dc3 100644
--- a/manual/math.texi
+++ b/manual/math.texi
@@ -70,7 +70,7 @@ provided for @code{_Float32}, @code{_Float64} and @code{_Float32x} on
 all platforms.
 It is also provided for @code{_Float128} and @code{_Float64x} on
 powerpc64le (PowerPC 64-bits little-endian), x86_64, x86, ia64,
-aarch64, alpha, mips64, s390 and sparc.
+aarch64, alpha, mips64, riscv, s390 and sparc.
 
 @menu
 * Mathematical Constants::      Precise numeric values for often-used
-- 
2.13.6

[PATCH 02/17] Add RISC-V entries to config.h.in

[Palmer Dabbelt]

These were autogenerated.

2018-01-13  Palmer Dabbelt  <palmer@sifive.com>

        * config.h.in: Regenerate.
---
 config.h.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/config.h.in b/config.h.in
index d928e7dd867c..b0b7cf26cb4b 100644
--- a/config.h.in
+++ b/config.h.in
@@ -100,6 +100,11 @@
 /* AArch64 big endian ABI */
 #undef HAVE_AARCH64_BE
 
+/* RISC-V integer ABI for ld.so.  */
+#undef RISCV_ABI_XLEN
+
+/* RISC-V floating-point ABI for ld.so.  */
+#undef RISCV_ABI_FLEN
 
 /* Linux specific: minimum supported kernel version.  */
 #undef	__LINUX_KERNEL_VERSION
-- 
2.13.6

[PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Palmer Dabbelt]

The RISC-V port defines ELF flags that enforce compatibility between
various objects.  This adds the shared support necessary for these
flags.

2018-01-13  Palmer Dabbelt  <palmer@sifive.com>

        * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
        FLAG_RISCV_FLOAT_ABI_DOUBLE.
        * elf/elf.h (EF_RISCV_RVC): New define.
        (EF_RISCV_FLOAT_ABI): Likewise.
        (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
        (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
        (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
        (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
        * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
        define.
        (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
---
 elf/cache.c                | 6 ++++++
 elf/elf.h                  | 8 ++++++++
 sysdeps/generic/ldconfig.h | 2 ++
 3 files changed, 16 insertions(+)

diff --git a/elf/cache.c b/elf/cache.c
index 1ec6ab36e7f7..c2c010f97bb2 100644
--- a/elf/cache.c
+++ b/elf/cache.c
@@ -114,6 +114,12 @@ print_entry (const char *lib, int flag, unsigned int osversion,
     case FLAG_MIPS64_LIBN64_NAN2008:
       fputs (",64bit,nan2008", stdout);
       break;
+    case FLAG_RISCV_FLOAT_ABI_SOFT:
+      fputs (",soft-float", stdout);
+      break;
+    case FLAG_RISCV_FLOAT_ABI_DOUBLE:
+      fputs (",double-float", stdout);
+      break;
     case 0:
       break;
     default:
diff --git a/elf/elf.h b/elf/elf.h
index 66af3dc0ea61..954f3266f711 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -3766,6 +3766,14 @@ enum
 
 #define R_TILEGX_NUM		130
 
+/* RISC-V ELF Flags */
+#define EF_RISCV_RVC 			0x0001
+#define EF_RISCV_FLOAT_ABI 		0x0006
+#define EF_RISCV_FLOAT_ABI_SOFT 	0x0000
+#define EF_RISCV_FLOAT_ABI_SINGLE 	0x0002
+#define EF_RISCV_FLOAT_ABI_DOUBLE 	0x0004
+#define EF_RISCV_FLOAT_ABI_QUAD 	0x0006
+
 /* RISC-V relocations.  */
 #define R_RISCV_NONE          0
 #define R_RISCV_32            1
diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
index 74eb92e528d5..59e20dc3ef79 100644
--- a/sysdeps/generic/ldconfig.h
+++ b/sysdeps/generic/ldconfig.h
@@ -42,6 +42,8 @@
 #define FLAG_MIPS_LIB32_NAN2008		0x0c00
 #define FLAG_MIPS64_LIBN32_NAN2008	0x0d00
 #define FLAG_MIPS64_LIBN64_NAN2008	0x0e00
+#define FLAG_RISCV_FLOAT_ABI_SOFT	0x0f00
+#define FLAG_RISCV_FLOAT_ABI_DOUBLE	0x1000
 
 /* Name of auxiliary cache.  */
 #define _PATH_LDCONFIG_AUX_CACHE "/var/cache/ldconfig/aux-cache"
-- 
2.13.6

[PATCH 04/17] Add documentation for __riscv_flush_icache

[Palmer Dabbelt]

I don't know if this is actually the right place to put this: it's a
Linux-specific function, and while users can call it we'd really prefer
they use rely on GCC to emit it when necessary from via its cache
flushing intrinsics.

2018-01-13  Palmer Dabbelt  <palmer@sifive.com>

        * manual/platform.texi: Add RISC-V documenation for
        __riscv_flush_icache.
---
 manual/platform.texi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/manual/platform.texi b/manual/platform.texi
index cb166641fb71..b8721a071272 100644
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -6,6 +6,7 @@
 
 @menu
 * PowerPC::           Facilities Specific to the PowerPC Architecture
+* RISC-V::            Facilities Specific to the RISC-V Architecture
 @end menu
 
 @node PowerPC
@@ -115,3 +116,21 @@ problem-state programs.  If the program priority is medium high when the time
 interval expires or if an attempt is made to set the priority to medium high
 when it is not allowed, the priority is set to medium.
 @end deftypefun
+
+@node RISC-V
+@appendixsec RISC-V-specific Facilities
+
+Cache management facilities specific to RISC-V systems that implement the Linux
+ABI are declared in @file{sys/cachectl.h}.
+
+@deftypefun {void} __riscv_flush_icache(void *@var{start}, void *@var{end}, unsigned long int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+Enforce ordering between stores and instruction cache fetches.  The range of
+addresses over which ordering is enforced is specified by @var{start} and
+@var{end}.  The @var{flags} argument controls the extent of this ordering, with
+the default behavior (a @var{flags} value of 0) being to enforce the fence on
+all threads in the current process.  Setting the
+@code{SYS_RISCV_FLUSH_ICACHE_LOCAL} bit allows users to indicate that enforcing
+ordering on only the current thread is necessary.  All other flag bits are
+reserved.
+@end deftypefun
-- 
2.13.6

[PATCH 05/17] RISC-V: ABI Implementation

[Palmer Dabbelt]

This patch contains code that needs to directly know about the RISC-V
ABI, which is specified in a work-in-progress psABI document:

  https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md

This is meant to contain all the RISC-V code that needs to explicitly
name registers or manage in-memory structure layout.  This does not
contain any of the Linux-specific code.
---
 sysdeps/riscv/__longjmp.S      | 57 ++++++++++++++++++++++++++
 sysdeps/riscv/backtrace.c      |  1 +
 sysdeps/riscv/bits/endian.h    |  5 +++
 sysdeps/riscv/bits/setjmp.h    | 39 ++++++++++++++++++
 sysdeps/riscv/bits/wordsize.h  | 31 +++++++++++++++
 sysdeps/riscv/bsd-_setjmp.c    |  1 +
 sysdeps/riscv/bsd-setjmp.c     |  1 +
 sysdeps/riscv/dl-trampoline.S  | 90 ++++++++++++++++++++++++++++++++++++++++++
 sysdeps/riscv/gccframe.h       | 21 ++++++++++
 sysdeps/riscv/jmpbuf-offsets.h | 23 +++++++++++
 sysdeps/riscv/jmpbuf-unwind.h  | 46 +++++++++++++++++++++
 sysdeps/riscv/machine-gmon.h   | 37 +++++++++++++++++
 sysdeps/riscv/memusage.h       | 21 ++++++++++
 sysdeps/riscv/setjmp.S         | 74 ++++++++++++++++++++++++++++++++++
 sysdeps/riscv/sys/asm.h        | 66 +++++++++++++++++++++++++++++++
 sysdeps/riscv/tls-macros.h     | 61 ++++++++++++++++++++++++++++
 16 files changed, 574 insertions(+)
 create mode 100644 sysdeps/riscv/__longjmp.S
 create mode 100644 sysdeps/riscv/backtrace.c
 create mode 100644 sysdeps/riscv/bits/endian.h
 create mode 100644 sysdeps/riscv/bits/setjmp.h
 create mode 100644 sysdeps/riscv/bits/wordsize.h
 create mode 100644 sysdeps/riscv/bsd-_setjmp.c
 create mode 100644 sysdeps/riscv/bsd-setjmp.c
 create mode 100644 sysdeps/riscv/dl-trampoline.S
 create mode 100644 sysdeps/riscv/gccframe.h
 create mode 100644 sysdeps/riscv/jmpbuf-offsets.h
 create mode 100644 sysdeps/riscv/jmpbuf-unwind.h
 create mode 100644 sysdeps/riscv/machine-gmon.h
 create mode 100644 sysdeps/riscv/memusage.h
 create mode 100644 sysdeps/riscv/setjmp.S
 create mode 100644 sysdeps/riscv/sys/asm.h
 create mode 100644 sysdeps/riscv/tls-macros.h

diff --git a/sysdeps/riscv/__longjmp.S b/sysdeps/riscv/__longjmp.S
new file mode 100644
index 000000000000..0b9e5e10e2c5
--- /dev/null
+++ b/sysdeps/riscv/__longjmp.S
@@ -0,0 +1,57 @@
+/* longjmp, RISC-V version.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+ENTRY (__longjmp)
+	REG_L ra,  0*SZREG(a0)
+	REG_L s0,  1*SZREG(a0)
+	REG_L s1,  2*SZREG(a0)
+	REG_L s2,  3*SZREG(a0)
+	REG_L s3,  4*SZREG(a0)
+	REG_L s4,  5*SZREG(a0)
+	REG_L s5,  6*SZREG(a0)
+	REG_L s6,  7*SZREG(a0)
+	REG_L s7,  8*SZREG(a0)
+	REG_L s8,  9*SZREG(a0)
+	REG_L s9, 10*SZREG(a0)
+	REG_L s10,11*SZREG(a0)
+	REG_L s11,12*SZREG(a0)
+	REG_L sp, 13*SZREG(a0)
+
+#ifndef __riscv_float_abi_soft
+	FREG_L fs0, 14*SZREG+ 0*SZFREG(a0)
+	FREG_L fs1, 14*SZREG+ 1*SZFREG(a0)
+	FREG_L fs2, 14*SZREG+ 2*SZFREG(a0)
+	FREG_L fs3, 14*SZREG+ 3*SZFREG(a0)
+	FREG_L fs4, 14*SZREG+ 4*SZFREG(a0)
+	FREG_L fs5, 14*SZREG+ 5*SZFREG(a0)
+	FREG_L fs6, 14*SZREG+ 6*SZFREG(a0)
+	FREG_L fs7, 14*SZREG+ 7*SZFREG(a0)
+	FREG_L fs8, 14*SZREG+ 8*SZFREG(a0)
+	FREG_L fs9, 14*SZREG+ 9*SZFREG(a0)
+	FREG_L fs10,14*SZREG+10*SZFREG(a0)
+	FREG_L fs11,14*SZREG+11*SZFREG(a0)
+#endif
+
+	seqz a0, a1
+	add  a0, a0, a1   # a0 = (a1 == 0) ? 1 : a1
+	ret
+
+END (__longjmp)
diff --git a/sysdeps/riscv/backtrace.c b/sysdeps/riscv/backtrace.c
new file mode 100644
index 000000000000..27ce597b3950
--- /dev/null
+++ b/sysdeps/riscv/backtrace.c
@@ -0,0 +1 @@
+#include <sysdeps/x86_64/backtrace.c>
diff --git a/sysdeps/riscv/bits/endian.h b/sysdeps/riscv/bits/endian.h
new file mode 100644
index 000000000000..4aaf559d4f43
--- /dev/null
+++ b/sysdeps/riscv/bits/endian.h
@@ -0,0 +1,5 @@
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
diff --git a/sysdeps/riscv/bits/setjmp.h b/sysdeps/riscv/bits/setjmp.h
new file mode 100644
index 000000000000..988ad6b1d6dd
--- /dev/null
+++ b/sysdeps/riscv/bits/setjmp.h
@@ -0,0 +1,39 @@
+/* Define the machine-dependent type `jmp_buf'.  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _RISCV_BITS_SETJMP_H
+#define _RISCV_BITS_SETJMP_H
+
+typedef struct __jmp_buf_internal_tag
+  {
+    /* Program counter.  */
+    long int __pc;
+    /* Callee-saved registers.  */
+    long int __regs[12];
+    /* Stack pointer.  */
+    long int __sp;
+
+    /* Callee-saved floating point registers.  */
+#if defined __riscv_float_abi_double
+   double __fpregs[12];
+#elif !defined __riscv_float_abi_soft
+# error unsupported FLEN
+#endif
+  } __jmp_buf[1];
+
+#endif /* _RISCV_BITS_SETJMP_H */
diff --git a/sysdeps/riscv/bits/wordsize.h b/sysdeps/riscv/bits/wordsize.h
new file mode 100644
index 000000000000..1cd0ae18b270
--- /dev/null
+++ b/sysdeps/riscv/bits/wordsize.h
@@ -0,0 +1,31 @@
+/* Determine the wordsize from the preprocessor defines.  RISC-V version.
+   Copyright (C) 2002-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#if __riscv_xlen == (__SIZEOF_POINTER__ * 8)
+# define __WORDSIZE __riscv_xlen
+#else
+# error unsupported ABI
+#endif
+
+#if __riscv_xlen == 64
+# define __WORDSIZE_TIME64_COMPAT32 1
+#else
+# define __WORDSIZE_TIME64_COMPAT32 0
+# define __WORDSIZE32_SIZE_ULONG    0
+# define __WORDSIZE32_PTRDIFF_LONG  0
+#endif
diff --git a/sysdeps/riscv/bsd-_setjmp.c b/sysdeps/riscv/bsd-_setjmp.c
new file mode 100644
index 000000000000..0d413101ce0d
--- /dev/null
+++ b/sysdeps/riscv/bsd-_setjmp.c
@@ -0,0 +1 @@
+/* _setjmp is implemented in setjmp.S */
diff --git a/sysdeps/riscv/bsd-setjmp.c b/sysdeps/riscv/bsd-setjmp.c
new file mode 100644
index 000000000000..ee7c5e3437d4
--- /dev/null
+++ b/sysdeps/riscv/bsd-setjmp.c
@@ -0,0 +1 @@
+/* setjmp is implemented in setjmp.S */
diff --git a/sysdeps/riscv/dl-trampoline.S b/sysdeps/riscv/dl-trampoline.S
new file mode 100644
index 000000000000..cda3be9f4e12
--- /dev/null
+++ b/sysdeps/riscv/dl-trampoline.S
@@ -0,0 +1,90 @@
+/* RISC-V PLT trampoline
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+/* Assembler veneer called from the PLT header code for lazy loading.
+   The PLT header passes its own args in t0-t2.  */
+
+#ifdef __riscv_float_abi_soft
+# define FRAME_SIZE (-((-10 * SZREG) & ALMASK))
+#else
+# define FRAME_SIZE (-((-10 * SZREG - 8 * SZFREG) & ALMASK))
+#endif
+
+ENTRY (_dl_runtime_resolve)
+  # Save arguments to stack.
+  addi sp, sp, -FRAME_SIZE
+  REG_S ra, 9*SZREG(sp)
+  REG_S a0, 1*SZREG(sp)
+  REG_S a1, 2*SZREG(sp)
+  REG_S a2, 3*SZREG(sp)
+  REG_S a3, 4*SZREG(sp)
+  REG_S a4, 5*SZREG(sp)
+  REG_S a5, 6*SZREG(sp)
+  REG_S a6, 7*SZREG(sp)
+  REG_S a7, 8*SZREG(sp)
+
+#ifndef __riscv_float_abi_soft
+  FREG_S fa0, (10*SZREG + 0*SZFREG)(sp)
+  FREG_S fa1, (10*SZREG + 1*SZFREG)(sp)
+  FREG_S fa2, (10*SZREG + 2*SZFREG)(sp)
+  FREG_S fa3, (10*SZREG + 3*SZFREG)(sp)
+  FREG_S fa4, (10*SZREG + 4*SZFREG)(sp)
+  FREG_S fa5, (10*SZREG + 5*SZFREG)(sp)
+  FREG_S fa6, (10*SZREG + 6*SZFREG)(sp)
+  FREG_S fa7, (10*SZREG + 7*SZFREG)(sp)
+#endif
+
+  # Update .got.plt and obtain runtime address of callee.
+  slli a1, t1, 1
+  mv a0, t0       # link map
+  add a1, a1, t1  # reloc offset (== thrice the .got.plt offset)
+  la a2, _dl_fixup
+  jalr a2
+  mv t1, a0
+
+  # Restore arguments from stack.
+  REG_L ra, 9*SZREG(sp)
+  REG_L a0, 1*SZREG(sp)
+  REG_L a1, 2*SZREG(sp)
+  REG_L a2, 3*SZREG(sp)
+  REG_L a3, 4*SZREG(sp)
+  REG_L a4, 5*SZREG(sp)
+  REG_L a5, 6*SZREG(sp)
+  REG_L a6, 7*SZREG(sp)
+  REG_L a7, 8*SZREG(sp)
+
+#ifndef __riscv_float_abi_soft
+  FREG_L fa0, (10*SZREG + 0*SZFREG)(sp)
+  FREG_L fa1, (10*SZREG + 1*SZFREG)(sp)
+  FREG_L fa2, (10*SZREG + 2*SZFREG)(sp)
+  FREG_L fa3, (10*SZREG + 3*SZFREG)(sp)
+  FREG_L fa4, (10*SZREG + 4*SZFREG)(sp)
+  FREG_L fa5, (10*SZREG + 5*SZFREG)(sp)
+  FREG_L fa6, (10*SZREG + 6*SZFREG)(sp)
+  FREG_L fa7, (10*SZREG + 7*SZFREG)(sp)
+#endif
+
+  addi sp, sp, FRAME_SIZE
+
+  # Invoke the callee.
+  jr t1
+END (_dl_runtime_resolve)
diff --git a/sysdeps/riscv/gccframe.h b/sysdeps/riscv/gccframe.h
new file mode 100644
index 000000000000..3dc62863afb2
--- /dev/null
+++ b/sysdeps/riscv/gccframe.h
@@ -0,0 +1,21 @@
+/* Definition of object in frame unwind info.  RISC-V version.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FIRST_PSEUDO_REGISTER 66
+
+#include <sysdeps/generic/gccframe.h>
diff --git a/sysdeps/riscv/jmpbuf-offsets.h b/sysdeps/riscv/jmpbuf-offsets.h
new file mode 100644
index 000000000000..fff4d0d9c6f9
--- /dev/null
+++ b/sysdeps/riscv/jmpbuf-offsets.h
@@ -0,0 +1,23 @@
+/* Private macros for accessing __jmp_buf contents.  RISC-V version.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <jmpbuf-unwind.h>
+
+/* Helper for generic ____longjmp_chk().  */
+#define JB_FRAME_ADDRESS(buf) \
+  ((void *) _jmpbuf_sp (buf))
diff --git a/sysdeps/riscv/jmpbuf-unwind.h b/sysdeps/riscv/jmpbuf-unwind.h
new file mode 100644
index 000000000000..2e5f37f10243
--- /dev/null
+++ b/sysdeps/riscv/jmpbuf-unwind.h
@@ -0,0 +1,46 @@
+/* Examine __jmp_buf for unwinding frames.  RISC-V version.
+   Copyright (C) 2003-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+#include <sysdep.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle)		\
+  ((void *) (address) < (void *) demangle ((jmpbuf)[0].__sp))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+  _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+static inline uintptr_t __attribute__ ((unused))
+_jmpbuf_sp (__jmp_buf regs)
+{
+  uintptr_t sp = regs[0].__sp;
+#ifdef PTR_DEMANGLE
+  PTR_DEMANGLE (sp);
+#endif
+  return sp;
+}
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+  ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
+
+/* We use the normal longjmp for unwinding.  */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/sysdeps/riscv/machine-gmon.h b/sysdeps/riscv/machine-gmon.h
new file mode 100644
index 000000000000..a50d50a2e12d
--- /dev/null
+++ b/sysdeps/riscv/machine-gmon.h
@@ -0,0 +1,37 @@
+/* RISC-V definitions for profiling support.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Accept 'frompc' address as argument from the function that calls
+   _mcount for profiling.  Use  __builtin_return_address (0)
+   for the 'selfpc' address.  */
+
+#include <sysdep.h>
+
+static void mcount_internal (unsigned long int frompc,
+			     unsigned long int selfpc);
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+static inline void mcount_internal (unsigned long int frompc, \
+unsigned long int selfpc)
+
+#define MCOUNT								\
+void _mcount (void *frompc)						\
+{									\
+  mcount_internal ((unsigned long int) frompc,				\
+		   (unsigned long int) RETURN_ADDRESS (0));		\
+}
diff --git a/sysdeps/riscv/memusage.h b/sysdeps/riscv/memusage.h
new file mode 100644
index 000000000000..a29e0d1e03ac
--- /dev/null
+++ b/sysdeps/riscv/memusage.h
@@ -0,0 +1,21 @@
+/* Machine-specific definitions for memory usage profiling, RISC-V version.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define GETSP() ({ register uintptr_t stack_ptr asm ("sp"); stack_ptr; })
+
+#include <sysdeps/generic/memusage.h>
diff --git a/sysdeps/riscv/setjmp.S b/sysdeps/riscv/setjmp.S
new file mode 100644
index 000000000000..cfbd276fc311
--- /dev/null
+++ b/sysdeps/riscv/setjmp.S
@@ -0,0 +1,74 @@
+/* setjmp for RISC-V.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+ENTRY (_setjmp)
+  li	a1, 0
+  j	__sigsetjmp
+END (_setjmp)
+ENTRY (setjmp)
+  li	a1, 1
+  /* Fallthrough */
+END (setjmp)
+ENTRY (__sigsetjmp)
+	REG_S ra,  0*SZREG(a0)
+	REG_S s0,  1*SZREG(a0)
+	REG_S s1,  2*SZREG(a0)
+	REG_S s2,  3*SZREG(a0)
+	REG_S s3,  4*SZREG(a0)
+	REG_S s4,  5*SZREG(a0)
+	REG_S s5,  6*SZREG(a0)
+	REG_S s6,  7*SZREG(a0)
+	REG_S s7,  8*SZREG(a0)
+	REG_S s8,  9*SZREG(a0)
+	REG_S s9, 10*SZREG(a0)
+	REG_S s10,11*SZREG(a0)
+	REG_S s11,12*SZREG(a0)
+	REG_S sp, 13*SZREG(a0)
+
+#ifndef __riscv_float_abi_soft
+	FREG_S fs0, 14*SZREG+ 0*SZFREG(a0)
+	FREG_S fs1, 14*SZREG+ 1*SZFREG(a0)
+	FREG_S fs2, 14*SZREG+ 2*SZFREG(a0)
+	FREG_S fs3, 14*SZREG+ 3*SZFREG(a0)
+	FREG_S fs4, 14*SZREG+ 4*SZFREG(a0)
+	FREG_S fs5, 14*SZREG+ 5*SZFREG(a0)
+	FREG_S fs6, 14*SZREG+ 6*SZFREG(a0)
+	FREG_S fs7, 14*SZREG+ 7*SZFREG(a0)
+	FREG_S fs8, 14*SZREG+ 8*SZFREG(a0)
+	FREG_S fs9, 14*SZREG+ 9*SZFREG(a0)
+	FREG_S fs10,14*SZREG+10*SZFREG(a0)
+	FREG_S fs11,14*SZREG+11*SZFREG(a0)
+#endif
+
+#if !IS_IN (libc) && IS_IN (rtld)
+  /* In ld.so we never save the signal mask.  */
+  li a0, 0
+  ret
+#else
+  /* Make a tail call to __sigjmp_save; it takes the same args.  */
+  j __sigjmp_save
+#endif
+
+
+END (__sigsetjmp)
+
+hidden_def (__sigsetjmp)
+weak_alias (_setjmp, __GI__setjmp)
diff --git a/sysdeps/riscv/sys/asm.h b/sysdeps/riscv/sys/asm.h
new file mode 100644
index 000000000000..348baa5f136e
--- /dev/null
+++ b/sysdeps/riscv/sys/asm.h
@@ -0,0 +1,66 @@
+/* Miscellaneous macros.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_ASM_H
+#define _SYS_ASM_H
+
+/* Macros to handle different pointer/register sizes for 32/64-bit code.  */
+#if __riscv_xlen == 64
+# define PTRLOG 3
+# define SZREG	8
+# define REG_S sd
+# define REG_L ld
+#elif __riscv_xlen == 32
+# define PTRLOG 2
+# define SZREG	4
+# define REG_S sw
+# define REG_L lw
+#else
+# error __riscv_xlen must equal 32 or 64
+#endif
+
+#if !defined __riscv_float_abi_soft
+/* For ABI uniformity, reserve 8 bytes for floats, even if double-precision
+   floating-point is not supported in hardware.  */
+# if defined __riscv_float_abi_double
+#  define FREG_L fld
+#  define FREG_S fsd
+#  define SZFREG 8
+# else
+#  error unsupported FLEN
+# endif
+#endif
+
+/* Declare leaf routine.  */
+#define	LEAF(symbol)				\
+		.globl	symbol;			\
+		.align	2;			\
+		.type	symbol,@function;	\
+symbol:						\
+		cfi_startproc;
+
+/* Mark end of function.  */
+#undef END
+#define END(function)				\
+		cfi_endproc;			\
+		.size	function,.-function
+
+/* Stack alignment.  */
+#define ALMASK	~15
+
+#endif /* sys/asm.h */
diff --git a/sysdeps/riscv/tls-macros.h b/sysdeps/riscv/tls-macros.h
new file mode 100644
index 000000000000..5433ed9d16ce
--- /dev/null
+++ b/sysdeps/riscv/tls-macros.h
@@ -0,0 +1,61 @@
+/* Macros to support TLS testing in times of missing compiler support.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sys/cdefs.h>
+#include <sys/asm.h>
+#include <sysdep.h>
+#include "dl-tls.h"
+
+#define LOAD_GP						\
+	".option push\n\t"				\
+	".option norelax\n\t"				\
+	"la gp, __global_pointer$\n\t"			\
+	".option pop\n\t"
+
+#define UNLOAD_GP
+
+#define TLS_GD(x)					\
+	({ void *__result;				\
+	asm (LOAD_GP					\
+	     "la.tls.gd %0, " #x "\n\t"			\
+	     UNLOAD_GP					\
+	     : "=r" (__result));			\
+	__tls_get_addr (__result); })
+
+#define TLS_LD(x) TLS_GD(x)
+
+#define TLS_IE(x)					\
+	({ void *__result;				\
+	asm (LOAD_GP					\
+	     "la.tls.ie %0, " #x "\n\t"			\
+	     "add %0, %0, tp\n\t"			\
+	     UNLOAD_GP					\
+	     : "=r" (__result));			\
+	__result; })
+
+#define TLS_LE(x)					\
+	({ void *__result;				\
+	asm (LOAD_GP					\
+	     "lui %0, %%tprel_hi(" #x ")\n\t"		\
+	     "add %0, %0, tp, %%tprel_add(" #x ")\n\t"	\
+	     "addi %0, %0, %%tprel_lo(" #x ")\n\t"	\
+	     UNLOAD_GP					\
+	     : "=r" (__result));			\
+	__result; })
-- 
2.13.6

[PATCH 06/17] RISC-V: Startup and Dynamic Loading Code

[Palmer Dabbelt]

This patch contains the various bits of support used by the C startup
code and the dynamic loader when running on a RISC-V system.  This
contains the implementation of our PLT entries, various ld.so hooks, and
_start.  This does not contain any Linux-specific code.
---
 sysdeps/riscv/bits/link.h   |  56 ++++++++
 sysdeps/riscv/crti.S        |  32 +++++
 sysdeps/riscv/dl-machine.h  | 323 ++++++++++++++++++++++++++++++++++++++++++++
 sysdeps/riscv/ldsodefs.h    |  47 +++++++
 sysdeps/riscv/linkmap.h     |   4 +
 sysdeps/riscv/sotruss-lib.c |  51 +++++++
 sysdeps/riscv/start.S       |  81 +++++++++++
 sysdeps/riscv/tst-audit.h   |  23 ++++
 8 files changed, 617 insertions(+)
 create mode 100644 sysdeps/riscv/bits/link.h
 create mode 100644 sysdeps/riscv/crti.S
 create mode 100644 sysdeps/riscv/dl-machine.h
 create mode 100644 sysdeps/riscv/ldsodefs.h
 create mode 100644 sysdeps/riscv/linkmap.h
 create mode 100644 sysdeps/riscv/sotruss-lib.c
 create mode 100644 sysdeps/riscv/start.S
 create mode 100644 sysdeps/riscv/tst-audit.h

diff --git a/sysdeps/riscv/bits/link.h b/sysdeps/riscv/bits/link.h
new file mode 100644
index 000000000000..04c3d7d74b95
--- /dev/null
+++ b/sysdeps/riscv/bits/link.h
@@ -0,0 +1,56 @@
+/* Machine-specific declarations for dynamic linker interface.  RISC-V version.
+   Copyright (C) 2005-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_LINK_H
+# error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+typedef struct La_riscv_regs
+{
+  unsigned long int lr_reg[8]; /* a0 - a7 */
+  double lr_fpreg[8]; /* fa0 - fa7 */
+  unsigned long int lr_ra;
+  unsigned long int lr_sp;
+} La_riscv_regs;
+
+/* Return values for calls from PLT on RISC-V.  */
+typedef struct La_riscv_retval
+{
+  unsigned long int lrv_a0;
+  unsigned long int lrv_a1;
+  double lrv_fa0;
+  double lrv_fa1;
+} La_riscv_retval;
+
+__BEGIN_DECLS
+
+extern ElfW (Addr) la_riscv_gnu_pltenter (ElfW (Sym) *__sym, unsigned int __ndx,
+					  uintptr_t *__refcook,
+					  uintptr_t *__defcook,
+					  La_riscv_regs *__regs,
+					  unsigned int *__flags,
+					  const char *__symname,
+					  long int *__framesizep);
+extern unsigned int la_riscv_gnu_pltexit (ElfW (Sym) *__sym, unsigned int __ndx,
+					  uintptr_t *__refcook,
+					  uintptr_t *__defcook,
+					  const La_riscv_regs *__inregs,
+					  La_riscv_retval *__outregs,
+					  const char *__symname);
+
+__END_DECLS
diff --git a/sysdeps/riscv/crti.S b/sysdeps/riscv/crti.S
new file mode 100644
index 000000000000..878d2cf4e758
--- /dev/null
+++ b/sysdeps/riscv/crti.S
@@ -0,0 +1,32 @@
+/* Facilitate pthread initialization using init_array.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sys/asm.h>
+
+#ifdef PREINIT_FUNCTION
+
+#if PREINIT_FUNCTION_WEAK
+# error PREINIT_FUNCTION_WEAK is unsupported
+#endif
+
+	.section .init_array, "aw"
+	.dc.a PREINIT_FUNCTION
+
+#endif
diff --git a/sysdeps/riscv/dl-machine.h b/sysdeps/riscv/dl-machine.h
new file mode 100644
index 000000000000..af9d50c008b0
--- /dev/null
+++ b/sysdeps/riscv/dl-machine.h
@@ -0,0 +1,323 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef dl_machine_h
+#define dl_machine_h
+
+#define ELF_MACHINE_NAME "RISC-V"
+
+#include <entry.h>
+#include <elf/elf.h>
+#include <sys/asm.h>
+#include <dl-tls.h>
+
+#ifndef _RTLD_PROLOGUE
+# define _RTLD_PROLOGUE(entry)						\
+	".globl\t" __STRING (entry) "\n\t"				\
+	".type\t" __STRING (entry) ", @function\n"			\
+	__STRING (entry) ":\n\t"
+#endif
+
+#ifndef _RTLD_EPILOGUE
+# define _RTLD_EPILOGUE(entry)						\
+	".size\t" __STRING (entry) ", . - " __STRING (entry) "\n\t"
+#endif
+
+#define ELF_MACHINE_JMP_SLOT R_RISCV_JUMP_SLOT
+
+#define elf_machine_type_class(type)				\
+  ((ELF_RTYPE_CLASS_PLT * ((type) == ELF_MACHINE_JMP_SLOT	\
+     || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_DTPREL32)	\
+     || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_DTPMOD32)	\
+     || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_TPREL32)	\
+     || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_DTPREL64)	\
+     || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_DTPMOD64)	\
+     || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_TPREL64)))	\
+   | (ELF_RTYPE_CLASS_COPY * ((type) == R_RISCV_COPY)))
+
+#define ELF_MACHINE_NO_REL 1
+#define ELF_MACHINE_NO_RELA 0
+
+/* Return nonzero iff ELF header is compatible with the running host.  */
+static inline int __attribute_used__
+elf_machine_matches_host (const ElfW (Ehdr) *ehdr)
+{
+  /* We can only run RISC-V binaries.  */
+  if (ehdr->e_machine != EM_RISCV)
+    return 0;
+
+  /* Ensure the library's floating-point ABI matches that of the running
+     system.  For now we don't support mixing XLEN, so there's no need (or way)
+     to check it matches.  */
+#ifdef __riscv_float_abi_double
+  if ((ehdr->e_flags & EF_RISCV_FLOAT_ABI) != EF_RISCV_FLOAT_ABI_DOUBLE)
+    return 0;
+#else
+  if ((ehdr->e_flags & EF_RISCV_FLOAT_ABI) != EF_RISCV_FLOAT_ABI_SOFT)
+    return 0;
+#endif
+
+  return 1;
+}
+
+/* Return the link-time address of _DYNAMIC.  */
+static inline ElfW (Addr)
+elf_machine_dynamic (void)
+{
+  extern ElfW (Addr) _GLOBAL_OFFSET_TABLE_ __attribute__ ((visibility ("hidden")));
+  return _GLOBAL_OFFSET_TABLE_;
+}
+
+#define STRINGXP(X) __STRING (X)
+#define STRINGXV(X) STRINGV_ (X)
+#define STRINGV_(...) # __VA_ARGS__
+
+/* Return the run-time load address of the shared object.  */
+static inline ElfW (Addr)
+elf_machine_load_address (void)
+{
+  ElfW (Addr) load_addr;
+  asm ("lla %0, _DYNAMIC" : "=r" (load_addr));
+  return load_addr - elf_machine_dynamic ();
+}
+
+/* Initial entry point code for the dynamic linker.
+   The C function `_dl_start' is the real entry point;
+   its return value is the user program's entry point.  */
+
+#define RTLD_START asm (\
+	".text\n\
+	" _RTLD_PROLOGUE (ENTRY_POINT) "\
+	mv a0, sp\n\
+	jal _dl_start\n\
+	# Stash user entry point in s0.\n\
+	mv s0, a0\n\
+	# See if we were run as a command with the executable file\n\
+	# name as an extra leading argument.\n\
+	lw a0, _dl_skip_args\n\
+	# Load the original argument count.\n\
+	" STRINGXP (REG_L) " a1, 0(sp)\n\
+	# Subtract _dl_skip_args from it.\n\
+	sub a1, a1, a0\n\
+	# Adjust the stack pointer to skip _dl_skip_args words.\n\
+	sll a0, a0, " STRINGXP (PTRLOG) "\n\
+	add sp, sp, a0\n\
+	# Save back the modified argument count.\n\
+	" STRINGXP (REG_S) " a1, 0(sp)\n\
+	# Call _dl_init (struct link_map *main_map, int argc, char **argv, char **env) \n\
+	" STRINGXP (REG_L) " a0, _rtld_local\n\
+	add a2, sp, " STRINGXP (SZREG) "\n\
+	sll a3, a1, " STRINGXP (PTRLOG) "\n\
+	add a3, a3, a2\n\
+	add a3, a3, " STRINGXP (SZREG) "\n\
+	# Call the function to run the initializers.\n\
+	jal _dl_init\n\
+	# Pass our finalizer function to _start.\n\
+	lla a0, _dl_fini\n\
+	# Jump to the user entry point.\n\
+	jr s0\n\
+	" _RTLD_EPILOGUE (ENTRY_POINT) "\
+	.previous" \
+);
+
+/* Names of the architecture-specific auditing callback functions.  */
+#define ARCH_LA_PLTENTER riscv_gnu_pltenter
+#define ARCH_LA_PLTEXIT riscv_gnu_pltexit
+
+/* Bias .got.plt entry by the offset requested by the PLT header.  */
+#define elf_machine_plt_value(map, reloc, value) (value)
+
+static inline ElfW (Addr)
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+		       const ElfW (Sym) *refsym, const ElfW (Sym) *sym,
+		       const ElfW (Rela) *reloc,
+		       ElfW (Addr) *reloc_addr, ElfW (Addr) value)
+{
+  return *reloc_addr = value;
+}
+
+#endif /* !dl_machine_h */
+
+#ifdef RESOLVE_MAP
+
+/* Perform a relocation described by R_INFO at the location pointed to
+   by RELOC_ADDR.  SYM is the relocation symbol specified by R_INFO and
+   MAP is the object containing the reloc.  */
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_rela (struct link_map *map, const ElfW (Rela) *reloc,
+		  const ElfW (Sym) *sym, const struct r_found_version *version,
+		  void *const reloc_addr, int skip_ifunc)
+{
+  ElfW (Addr) r_info = reloc->r_info;
+  const unsigned long int r_type = ELFW (R_TYPE) (r_info);
+  ElfW (Addr) *addr_field = (ElfW (Addr) *) reloc_addr;
+  const ElfW (Sym) *const __attribute__ ((unused)) refsym = sym;
+  struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
+  ElfW (Addr) value = 0;
+  if (sym_map != NULL)
+    value = sym_map->l_addr + sym->st_value + reloc->r_addend;
+
+  switch (r_type)
+    {
+#ifndef RTLD_BOOTSTRAP
+    case __WORDSIZE == 64 ? R_RISCV_TLS_DTPMOD64 : R_RISCV_TLS_DTPMOD32:
+      if (sym_map)
+	*addr_field = sym_map->l_tls_modid;
+      break;
+
+    case __WORDSIZE == 64 ? R_RISCV_TLS_DTPREL64 : R_RISCV_TLS_DTPREL32:
+      if (sym != NULL)
+	*addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend;
+      break;
+
+    case __WORDSIZE == 64 ? R_RISCV_TLS_TPREL64 : R_RISCV_TLS_TPREL32:
+      if (sym != NULL)
+	{
+	  CHECK_STATIC_TLS (map, sym_map);
+	  *addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend;
+	}
+      break;
+
+    case R_RISCV_COPY:
+      {
+	if (__glibc_unlikely (sym == NULL))
+	  /* This can happen in trace mode if an object could not be
+	     found.  */
+	  break;
+
+	/* Handle TLS copy relocations.  */
+	if (__glibc_unlikely (ELFW (ST_TYPE) (sym->st_info) == STT_TLS))
+	  {
+	    /* There's nothing to do if the symbol is in .tbss.  */
+	    if (__glibc_likely (sym->st_value >= sym_map->l_tls_initimage_size))
+	      break;
+	    value += (ElfW (Addr)) sym_map->l_tls_initimage - sym_map->l_addr;
+	  }
+
+	size_t size = sym->st_size;
+	if (__glibc_unlikely (sym->st_size != refsym->st_size))
+	  {
+	    const char *strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
+	    if (sym->st_size > refsym->st_size)
+	      size = refsym->st_size;
+	    if (sym->st_size > refsym->st_size || GLRO (dl_verbose))
+	      _dl_error_printf ("\
+  %s: Symbol `%s' has different size in shared object, consider re-linking\n",
+				rtld_progname ?: "<program name unknown>",
+				strtab + refsym->st_name);
+	  }
+
+	memcpy (reloc_addr, (void *)value, size);
+	break;
+      }
+#endif
+
+#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
+    case R_RISCV_RELATIVE:
+      {
+# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
+	/* This is defined in rtld.c, but nowhere in the static libc.a;
+	   make the reference weak so static programs can still link.
+	   This declaration cannot be done when compiling rtld.c
+	   (i.e. #ifdef RTLD_BOOTSTRAP) because rtld.c contains the
+	   common defn for _dl_rtld_map, which is incompatible with a
+	   weak decl in the same file.  */
+#  ifndef SHARED
+	weak_extern (GL (dl_rtld_map));
+#  endif
+	if (map != &GL (dl_rtld_map)) /* Already done in rtld itself.  */
+# endif
+	  *addr_field = map->l_addr + reloc->r_addend;
+      break;
+    }
+#endif
+
+    case R_RISCV_JUMP_SLOT:
+    case __WORDSIZE == 64 ? R_RISCV_64 : R_RISCV_32:
+      *addr_field = value;
+      break;
+
+    case R_RISCV_NONE:
+      break;
+
+    default:
+      _dl_reloc_bad_type (map, r_type, 0);
+      break;
+    }
+}
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_rela_relative (ElfW (Addr) l_addr, const ElfW (Rela) *reloc,
+			  void *const reloc_addr)
+{
+  *(ElfW (Addr) *) reloc_addr = l_addr + reloc->r_addend;
+}
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_lazy_rel (struct link_map *map, ElfW (Addr) l_addr,
+		      const ElfW (Rela) *reloc, int skip_ifunc)
+{
+  ElfW (Addr) *const reloc_addr = (void *) (l_addr + reloc->r_offset);
+  const unsigned int r_type = ELFW (R_TYPE) (reloc->r_info);
+
+  /* Check for unexpected PLT reloc type.  */
+  if (__glibc_likely (r_type == R_RISCV_JUMP_SLOT))
+    {
+      if (__glibc_unlikely (map->l_mach.plt == 0))
+	{
+	  if (l_addr)
+	    *reloc_addr += l_addr;
+	}
+      else
+	*reloc_addr = map->l_mach.plt;
+    }
+  else
+    _dl_reloc_bad_type (map, r_type, 1);
+}
+
+/* Set up the loaded object described by L so its stub function
+   will jump to the on-demand fixup code __dl_runtime_resolve.  */
+
+auto inline int
+__attribute__ ((always_inline))
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+#ifndef RTLD_BOOTSTRAP
+  /* If using PLTs, fill in the first two entries of .got.plt.  */
+  if (l->l_info[DT_JMPREL])
+    {
+      extern void _dl_runtime_resolve (void) __attribute__ ((visibility ("hidden")));
+      ElfW (Addr) *gotplt = (ElfW (Addr) *) D_PTR (l, l_info[DT_PLTGOT]);
+      /* If a library is prelinked but we have to relocate anyway,
+	 we have to be able to undo the prelinking of .got.plt.
+	 The prelinker saved the address of .plt for us here.  */
+      if (gotplt[1])
+	l->l_mach.plt = gotplt[1] + l->l_addr;
+      gotplt[0] = (ElfW (Addr)) &_dl_runtime_resolve;
+      gotplt[1] = (ElfW (Addr)) l;
+    }
+#endif
+
+  return lazy;
+}
+
+#endif /* RESOLVE_MAP */
diff --git a/sysdeps/riscv/ldsodefs.h b/sysdeps/riscv/ldsodefs.h
new file mode 100644
index 000000000000..10ba15e774eb
--- /dev/null
+++ b/sysdeps/riscv/ldsodefs.h
@@ -0,0 +1,47 @@
+/* Run-time dynamic linker data structures for loaded ELF shared objects.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _RISCV_LDSODEFS_H
+#define _RISCV_LDSODEFS_H 1
+
+#include <elf.h>
+
+struct La_riscv_regs;
+struct La_riscv_retval;
+
+#define ARCH_PLTENTER_MEMBERS						\
+    ElfW (Addr) (*riscv_gnu_pltenter) (ElfW (Sym) *, unsigned int,	\
+				      uintptr_t *, uintptr_t *,		\
+				      const struct La_riscv_regs *,	\
+				      unsigned int *, const char *name,	\
+				      long int *framesizep);
+
+#define ARCH_PLTEXIT_MEMBERS						\
+    unsigned int (*riscv_gnu_pltexit) (ElfW (Sym) *, unsigned int,	\
+				       uintptr_t *, uintptr_t *,	\
+				       const struct La_riscv_regs *,	\
+				       struct La_riscv_retval *,	\
+				       const char *);
+
+/* The RISC-V ABI specifies that the dynamic section has to be read-only.  */
+
+#define DL_RO_DYN_SECTION 1
+
+#include_next <ldsodefs.h>
+
+#endif
diff --git a/sysdeps/riscv/linkmap.h b/sysdeps/riscv/linkmap.h
new file mode 100644
index 000000000000..6bf44b562ffc
--- /dev/null
+++ b/sysdeps/riscv/linkmap.h
@@ -0,0 +1,4 @@
+struct link_map_machine
+  {
+    ElfW (Addr) plt; /* Address of .plt.  */
+  };
diff --git a/sysdeps/riscv/sotruss-lib.c b/sysdeps/riscv/sotruss-lib.c
new file mode 100644
index 000000000000..42dff2d97849
--- /dev/null
+++ b/sysdeps/riscv/sotruss-lib.c
@@ -0,0 +1,51 @@
+/* Override generic sotruss-lib.c to define actual functions for RISC-V.
+   Copyright (C) 2012-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define HAVE_ARCH_PLTENTER
+#define HAVE_ARCH_PLTEXIT
+
+#include <elf/sotruss-lib.c>
+
+ElfW (Addr)
+la_riscv_gnu_pltenter (ElfW (Sym) *sym __attribute__ ((unused)),
+		       unsigned int ndx __attribute__ ((unused)),
+		       uintptr_t *refcook, uintptr_t *defcook,
+		       La_riscv_regs *regs, unsigned int *flags,
+		       const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+	       *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_riscv_gnu_pltexit (ElfW (Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+		      uintptr_t *defcook,
+		      const struct La_riscv_regs *inregs,
+		      struct La_riscv_retval *outregs,
+		      const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_a0);
+
+  return 0;
+}
diff --git a/sysdeps/riscv/start.S b/sysdeps/riscv/start.S
new file mode 100644
index 000000000000..4635ddb5eb8c
--- /dev/null
+++ b/sysdeps/riscv/start.S
@@ -0,0 +1,81 @@
+/* Startup code compliant to the ELF RISC-V ABI.
+   Copyright (C) 1995-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define __ASSEMBLY__ 1
+#include <entry.h>
+#include <sysdep.h>
+#include <sys/asm.h>
+
+/* The entry point's job is to call __libc_start_main.  Per the ABI,
+   a0 contains the address of a function to be passed to atexit.
+   __libc_start_main wants this in a5.  */
+
+ENTRY (ENTRY_POINT)
+	call  .Lload_gp
+	mv    a5, a0  /* rtld_fini.  */
+	/* main may be in a shared library.  */
+	la   a0, main
+	REG_L a1, 0(sp)      /* argc.  */
+	addi  a2, sp, SZREG  /* argv.  */
+	andi  sp, sp, ALMASK /* Align stack. */
+	lla   a3, __libc_csu_init
+	lla   a4, __libc_csu_fini
+	mv    a6, sp  /* stack_end.  */
+
+	tail  __libc_start_main@plt
+END (ENTRY_POINT)
+
+/* Dynamic links need the global pointer to be initialized prior to calling
+   any shared library's initializers, so we use preinit_array to load it.
+   This doesn't cut it for static links, though, since the global pointer
+   needs to be initialized before calling __libc_start_main in that case.
+   So we redundantly initialize it at the beginning of _start.  */
+
+.Lload_gp:
+.option push
+.option norelax
+	lla   gp, __global_pointer$
+.option pop
+	ret
+
+	.section .preinit_array,"aw"
+	.dc.a .Lload_gp
+
+/* Define a symbol for the first piece of initialized data.  */
+	.data
+	.globl __data_start
+__data_start:
+	.weak data_start
+	data_start = __data_start
diff --git a/sysdeps/riscv/tst-audit.h b/sysdeps/riscv/tst-audit.h
new file mode 100644
index 000000000000..7cce56d1046f
--- /dev/null
+++ b/sysdeps/riscv/tst-audit.h
@@ -0,0 +1,23 @@
+/* Definitions for testing PLT entry/exit auditing.  RISC-V version.
+   Copyright (C) 2005-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define pltenter la_riscv_gnu_pltenter
+#define pltexit la_riscv_gnu_pltexit
+#define La_regs La_riscv_regs
+#define La_retval La_riscv_retval
+#define int_retval lrv_a0
-- 
2.13.6

[PATCH 07/17] RISC-V: Thread-Local Storage Support

[Palmer Dabbelt]

This patch implements TLS support for RISC-V.  We support all four
standard TLS addressing modes (LE, IE, LD, and GD) when running on
Linux via NPTL.  There is a draft psABI document that defines our TLS
ABI here

  https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#thread-local-storage
---
 sysdeps/riscv/dl-tls.h             |  48 ++++++++++++
 sysdeps/riscv/libc-tls.c           |  32 ++++++++
 sysdeps/riscv/nptl/tcb-offsets.sym |   6 ++
 sysdeps/riscv/nptl/tls.h           | 145 +++++++++++++++++++++++++++++++++++++
 sysdeps/riscv/stackinfo.h          |  33 +++++++++
 5 files changed, 264 insertions(+)
 create mode 100644 sysdeps/riscv/dl-tls.h
 create mode 100644 sysdeps/riscv/libc-tls.c
 create mode 100644 sysdeps/riscv/nptl/tcb-offsets.sym
 create mode 100644 sysdeps/riscv/nptl/tls.h
 create mode 100644 sysdeps/riscv/stackinfo.h

diff --git a/sysdeps/riscv/dl-tls.h b/sysdeps/riscv/dl-tls.h
new file mode 100644
index 000000000000..ab2d860314de
--- /dev/null
+++ b/sysdeps/riscv/dl-tls.h
@@ -0,0 +1,48 @@
+/* Thread-local storage handling in the ELF dynamic linker.  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+/* Type used for the representation of TLS information in the GOT.  */
+typedef struct
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+/* The thread pointer points to the first static TLS block.  */
+#define TLS_TP_OFFSET		0
+
+/* Dynamic thread vector pointers point 0x800 past the start of each
+   TLS block.  */
+#define TLS_DTV_OFFSET		0x800
+
+/* Compute the value for a GOTTPREL reloc.  */
+#define TLS_TPREL_VALUE(sym_map, sym) \
+  ((sym_map)->l_tls_offset + (sym)->st_value - TLS_TP_OFFSET)
+
+/* Compute the value for a DTPREL reloc.  */
+#define TLS_DTPREL_VALUE(sym) \
+  ((sym)->st_value - TLS_DTV_OFFSET)
+
+extern void *__tls_get_addr (tls_index *ti);
+
+#define GET_ADDR_OFFSET	(ti->ti_offset + TLS_DTV_OFFSET)
+#define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
+
+/* Value used for dtv entries for which the allocation is delayed.  */
+#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/riscv/libc-tls.c b/sysdeps/riscv/libc-tls.c
new file mode 100644
index 000000000000..c72abc1d3439
--- /dev/null
+++ b/sysdeps/riscv/libc-tls.c
@@ -0,0 +1,32 @@
+/* Thread-local storage handling in the ELF dynamic linker.  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <csu/libc-tls.c>
+#include <dl-tls.h>
+
+/* On RISC-V, linker optimizations are not required, so __tls_get_addr
+   can be called even in statically linked binaries.  In this case module
+   must be always 1 and PT_TLS segment exist in the binary, otherwise it
+   would not link.  */
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer.val + GET_ADDR_OFFSET;
+}
diff --git a/sysdeps/riscv/nptl/tcb-offsets.sym b/sysdeps/riscv/nptl/tcb-offsets.sym
new file mode 100644
index 000000000000..ab4981f2e269
--- /dev/null
+++ b/sysdeps/riscv/nptl/tcb-offsets.sym
@@ -0,0 +1,6 @@
+#include <sysdep.h>
+#include <tls.h>
+
+#define thread_offsetof(mem)	(long)(offsetof (struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
+
+MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
diff --git a/sysdeps/riscv/nptl/tls.h b/sysdeps/riscv/nptl/tls.h
new file mode 100644
index 000000000000..842da39d47fc
--- /dev/null
+++ b/sysdeps/riscv/nptl/tls.h
@@ -0,0 +1,145 @@
+/* Definition for thread-local data handling.  NPTL/RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _RISCV_TLS_H
+#define _RISCV_TLS_H	1
+
+#include <dl-sysdep.h>
+
+#ifndef __ASSEMBLER__
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+# include <dl-dtv.h>
+
+register void *__thread_self asm ("tp");
+# define READ_THREAD_POINTER() ({ __thread_self; })
+
+/* Get system call information.  */
+# include <sysdep.h>
+
+/* The TP points to the start of the thread blocks.  */
+# define TLS_DTV_AT_TP	1
+# define TLS_TCB_AT_TP	0
+
+/* Get the thread descriptor definition.  */
+# include <nptl/descr.h>
+
+typedef struct
+{
+  dtv_t *dtv;
+  void *private;
+} tcbhead_t;
+
+/* This is the size of the initial TCB.  Because our TCB is before the thread
+   pointer, we don't need this.  */
+# define TLS_INIT_TCB_SIZE	0
+
+/* Alignment requirements for the initial TCB.  */
+# define TLS_INIT_TCB_ALIGN	__alignof__ (struct pthread)
+
+/* This is the size of the TCB.  Because our TCB is before the thread
+   pointer, we don't need this.  */
+# define TLS_TCB_SIZE		0
+
+/* Alignment requirements for the TCB.  */
+# define TLS_TCB_ALIGN		__alignof__ (struct pthread)
+
+/* This is the size we need before TCB - actually, it includes the TCB.  */
+# define TLS_PRE_TCB_SIZE \
+  (sizeof (struct pthread)						      \
+   + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
+
+/* The thread pointer tp points to the end of the TCB.
+   The pthread_descr structure is immediately in front of the TCB.  */
+# define TLS_TCB_OFFSET	0
+
+/* Install the dtv pointer.  The pointer passed is to the element with
+   index -1 which contain the length.  */
+# define INSTALL_DTV(tcbp, dtvp) \
+  (((tcbhead_t *) (tcbp))[-1].dtv = (dtvp) + 1)
+
+/* Install new dtv for current thread.  */
+# define INSTALL_NEW_DTV(dtv) \
+  (THREAD_DTV() = (dtv))
+
+/* Return dtv of given thread descriptor.  */
+# define GET_DTV(tcbp) \
+  (((tcbhead_t *) (tcbp))[-1].dtv)
+
+/* Code to initially initialize the thread pointer.  */
+# define TLS_INIT_TP(tcbp) \
+  ({ __thread_self = (char*)tcbp + TLS_TCB_OFFSET; NULL; })
+
+/* Return the address of the dtv for the current thread.  */
+# define THREAD_DTV() \
+  (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))[-1].dtv)
+
+/* Return the thread descriptor for the current thread.  */
+# define THREAD_SELF \
+ ((struct pthread *) (READ_THREAD_POINTER ()			     \
+		      - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
+
+/* Value passed to 'clone' for initialization of the thread register.  */
+# define TLS_DEFINE_INIT_TP(tp, pd) \
+  void *tp = (void *) (pd) + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE
+
+/* Magic for libthread_db to know how to do THREAD_SELF.  */
+# define DB_THREAD_SELF \
+  CONST_THREAD_AREA (32, TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE)
+
+/* Access to data in the thread descriptor is easy.  */
+# define THREAD_GETMEM(descr, member) \
+  descr->member
+# define THREAD_GETMEM_NC(descr, member, idx) \
+  descr->member[idx]
+# define THREAD_SETMEM(descr, member, value) \
+  descr->member = (value)
+# define THREAD_SETMEM_NC(descr, member, idx, value) \
+  descr->member[idx] = (value)
+
+/* l_tls_offset == 0 is perfectly valid, so we have to use some different
+   value to mean unset l_tls_offset.  */
+# define NO_TLS_OFFSET		-1
+
+/* Get and set the global scope generation counter in struct pthread.  */
+# define THREAD_GSCOPE_FLAG_UNUSED 0
+# define THREAD_GSCOPE_FLAG_USED   1
+# define THREAD_GSCOPE_FLAG_WAIT   2
+# define THREAD_GSCOPE_RESET_FLAG() \
+  do									     \
+    { int __res								     \
+	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,	     \
+			       THREAD_GSCOPE_FLAG_UNUSED);		     \
+      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
+	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE);   \
+    }									     \
+  while (0)
+# define THREAD_GSCOPE_SET_FLAG() \
+  do									     \
+    {									     \
+      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;	     \
+      atomic_write_barrier ();						     \
+    }									     \
+  while (0)
+# define THREAD_GSCOPE_WAIT() \
+  GL (dl_wait_lookup_done) ()
+
+#endif /* __ASSEMBLER__ */
+
+#endif	/* tls.h */
diff --git a/sysdeps/riscv/stackinfo.h b/sysdeps/riscv/stackinfo.h
new file mode 100644
index 000000000000..5b4f91c6a174
--- /dev/null
+++ b/sysdeps/riscv/stackinfo.h
@@ -0,0 +1,33 @@
+/* Stack environment definitions for RISC-V.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This file contains a bit of information about the stack allocation
+   of the processor.  */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H	1
+
+#include <elf.h>
+
+/* On RISC-V the stack grows down.  */
+#define _STACK_GROWS_DOWN	1
+
+/* Default to a non-executable stack.  */
+#define DEFAULT_STACK_PERMS (PF_R | PF_W)
+
+#endif	/* stackinfo.h */
-- 
2.13.6

[PATCH 08/17] RISC-V: Generic <math.h> and soft-fp Routines

[Palmer Dabbelt]

This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V.  This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.

FIXME: add ieee745/soft-fp via a riscv/soft-fp directory.
---
 sysdeps/riscv/bits/fenv.h   |  74 +++++++++++++++++++++++++++++
 sysdeps/riscv/e_sqrtl.c     |  37 +++++++++++++++
 sysdeps/riscv/fpu_control.h |  74 +++++++++++++++++++++++++++++
 sysdeps/riscv/math-tests.h  |  38 +++++++++++++++
 sysdeps/riscv/nofpu/Implies |   1 +
 sysdeps/riscv/sfp-machine.h | 112 ++++++++++++++++++++++++++++++++++++++++++++
 sysdeps/riscv/tininess.h    |   1 +
 7 files changed, 337 insertions(+)
 create mode 100644 sysdeps/riscv/bits/fenv.h
 create mode 100644 sysdeps/riscv/e_sqrtl.c
 create mode 100644 sysdeps/riscv/fpu_control.h
 create mode 100644 sysdeps/riscv/math-tests.h
 create mode 100644 sysdeps/riscv/nofpu/Implies
 create mode 100644 sysdeps/riscv/sfp-machine.h
 create mode 100644 sysdeps/riscv/tininess.h

diff --git a/sysdeps/riscv/bits/fenv.h b/sysdeps/riscv/bits/fenv.h
new file mode 100644
index 000000000000..e23b7e253d93
--- /dev/null
+++ b/sysdeps/riscv/bits/fenv.h
@@ -0,0 +1,74 @@
+/* Floating point environment, RISC-V version.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+enum
+  {
+    FE_INEXACT   =
+#define FE_INEXACT	(0x01)
+      FE_INEXACT,
+    FE_UNDERFLOW =
+#define FE_UNDERFLOW	(0x02)
+      FE_UNDERFLOW,
+    FE_OVERFLOW  =
+#define FE_OVERFLOW	(0x04)
+      FE_OVERFLOW,
+    FE_DIVBYZERO =
+#define FE_DIVBYZERO	(0x08)
+      FE_DIVBYZERO,
+    FE_INVALID   =
+#define FE_INVALID	(0x10)
+      FE_INVALID
+  };
+
+#define FE_ALL_EXCEPT \
+	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+enum
+  {
+    FE_TONEAREST  =
+#define FE_TONEAREST	(0x0)
+      FE_TONEAREST,
+    FE_TOWARDZERO =
+#define FE_TOWARDZERO	(0x1)
+      FE_TOWARDZERO,
+    FE_DOWNWARD   =
+#define FE_DOWNWARD	(0x2)
+      FE_DOWNWARD,
+    FE_UPWARD     =
+#define FE_UPWARD	(0x3)
+      FE_UPWARD
+  };
+
+
+typedef unsigned int fexcept_t;
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((__const fenv_t *) -1)
+
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+/* Type representing floating-point control modes.  */
+typedef unsigned int femode_t;
+
+/* Default floating-point control modes.  */
+# define FE_DFL_MODE	((const femode_t *) -1L)
+#endif
diff --git a/sysdeps/riscv/e_sqrtl.c b/sysdeps/riscv/e_sqrtl.c
new file mode 100644
index 000000000000..55a875d9fbb3
--- /dev/null
+++ b/sysdeps/riscv/e_sqrtl.c
@@ -0,0 +1,37 @@
+/* long double square root in software floating-point emulation.
+   Copyright (C) 1997-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdlib.h>
+#include <soft-fp/soft-fp.h>
+#include <soft-fp/quad.h>
+
+long double
+__ieee754_sqrtl (const long double a)
+{
+  FP_DECL_EX;
+  FP_DECL_Q (A); FP_DECL_Q (C);
+  long double c;
+
+  FP_INIT_ROUNDMODE;
+  FP_UNPACK_Q (A, a);
+  FP_SQRT_Q (C, A);
+  FP_PACK_Q (c, C);
+  FP_HANDLE_EXCEPTIONS;
+  return c;
+}
+strong_alias (__ieee754_sqrtl, __sqrtl_finite)
diff --git a/sysdeps/riscv/fpu_control.h b/sysdeps/riscv/fpu_control.h
new file mode 100644
index 000000000000..c050d279b246
--- /dev/null
+++ b/sysdeps/riscv/fpu_control.h
@@ -0,0 +1,74 @@
+/* FPU control word bits.  RISC-V version.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+#include <features.h>
+
+#ifndef __riscv_flen
+
+# define _FPU_RESERVED 0xffffffff
+# define _FPU_DEFAULT  0x00000000
+typedef unsigned int fpu_control_t;
+# define _FPU_GETCW(cw) (cw) = 0
+# define _FPU_SETCW(cw) do { } while (0)
+extern fpu_control_t __fpu_control;
+
+#else /* __riscv_flen */
+
+# define _FPU_RESERVED 0
+# define _FPU_DEFAULT  0
+# define _FPU_IEEE     _FPU_DEFAULT
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
+
+/* Macros for accessing the hardware control word.  */
+# define _FPU_GETCW(cw) __asm__ volatile ("frsr %0" : "=r" (cw))
+# define _FPU_SETCW(cw) __asm__ volatile ("fssr %z0" : : "rJ" (cw))
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+# define _FCLASS(x) (__extension__ ({ int __res; \
+  if (sizeof (x) * 8 > __riscv_flen) __builtin_trap (); \
+  if (sizeof (x) == 4) asm ("fclass.s %0, %1" : "=r" (__res) : "f" (x)); \
+  else if (sizeof (x) == 8) asm ("fclass.d %0, %1" : "=r" (__res) : "f" (x)); \
+  else __builtin_trap (); \
+  __res; }))
+
+# define _FCLASS_MINF     (1 << 0)
+# define _FCLASS_MNORM    (1 << 1)
+# define _FCLASS_MSUBNORM (1 << 2)
+# define _FCLASS_MZERO    (1 << 3)
+# define _FCLASS_PZERO    (1 << 4)
+# define _FCLASS_PSUBNORM (1 << 5)
+# define _FCLASS_PNORM    (1 << 6)
+# define _FCLASS_PINF     (1 << 7)
+# define _FCLASS_SNAN     (1 << 8)
+# define _FCLASS_QNAN     (1 << 9)
+# define _FCLASS_ZERO     (_FCLASS_MZERO | _FCLASS_PZERO)
+# define _FCLASS_SUBNORM  (_FCLASS_MSUBNORM | _FCLASS_PSUBNORM)
+# define _FCLASS_NORM     (_FCLASS_MNORM | _FCLASS_PNORM)
+# define _FCLASS_INF      (_FCLASS_MINF | _FCLASS_PINF)
+# define _FCLASS_NAN      (_FCLASS_SNAN | _FCLASS_QNAN)
+
+#endif /* __riscv_flen */
+
+#endif	/* fpu_control.h */
diff --git a/sysdeps/riscv/math-tests.h b/sysdeps/riscv/math-tests.h
new file mode 100644
index 000000000000..b2dcc08032f6
--- /dev/null
+++ b/sysdeps/riscv/math-tests.h
@@ -0,0 +1,38 @@
+/* Configuration for math tests.  RISC-V version
+   Copyright (C) 2014-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Copied from the aarch64 version
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Trapping exceptions are not supported on RISC-V.  */
+#define EXCEPTION_ENABLE_SUPPORTED(EXCEPT)	((EXCEPT) == 0)
+
+/* Despite not supporting trapping exceptions, we support setting
+   floating-point exception flags on hard-float targets.  These are not
+   supported on soft-float targets.  */
+#if __riscv_flen == 0
+#define EXCEPTION_TESTS_float 0
+#define EXCEPTION_TESTS_double        0
+#endif
+
+/* We don't support the Q extension yet, so long double is always soft float
+ * and therefor doesn't support exceptions.  */
+#define EXCEPTION_TESTS_long_double   0
+
+/* RISC-V floating-point instructions do not preserve NaN payloads.  */
+#define SNAN_TESTS_PRESERVE_PAYLOAD	0
+
+#include_next <math-tests.h>
diff --git a/sysdeps/riscv/nofpu/Implies b/sysdeps/riscv/nofpu/Implies
new file mode 100644
index 000000000000..abcbadb25f22
--- /dev/null
+++ b/sysdeps/riscv/nofpu/Implies
@@ -0,0 +1 @@
+ieee754/soft-fp
diff --git a/sysdeps/riscv/sfp-machine.h b/sysdeps/riscv/sfp-machine.h
new file mode 100644
index 000000000000..b86a9cfa66f4
--- /dev/null
+++ b/sysdeps/riscv/sfp-machine.h
@@ -0,0 +1,112 @@
+/* RISC-V softfloat definitions
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+#if __riscv_xlen == 32
+
+# define _FP_W_TYPE_SIZE		32
+# define _FP_W_TYPE		unsigned long
+# define _FP_WS_TYPE		signed long
+# define _FP_I_TYPE		long
+
+# define _FP_MUL_MEAT_S(R, X, Y)				\
+  _FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
+# define _FP_MUL_MEAT_D(R, X, Y)				\
+  _FP_MUL_MEAT_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
+# define _FP_MUL_MEAT_Q(R, X, Y)				\
+  _FP_MUL_MEAT_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
+
+# define _FP_DIV_MEAT_S(R, X, Y)	_FP_DIV_MEAT_1_udiv_norm (S, R, X, Y)
+# define _FP_DIV_MEAT_D(R, X, Y)	_FP_DIV_MEAT_2_udiv (D, R, X, Y)
+# define _FP_DIV_MEAT_Q(R, X, Y)	_FP_DIV_MEAT_4_udiv (Q, R, X, Y)
+
+# define _FP_NANFRAC_S		_FP_QNANBIT_S
+# define _FP_NANFRAC_D		_FP_QNANBIT_D, 0
+# define _FP_NANFRAC_Q		_FP_QNANBIT_Q, 0, 0, 0
+
+#else
+
+# define _FP_W_TYPE_SIZE		64
+# define _FP_W_TYPE		unsigned long long
+# define _FP_WS_TYPE		signed long long
+# define _FP_I_TYPE		long long
+
+# define _FP_MUL_MEAT_S(R, X, Y)					\
+  _FP_MUL_MEAT_1_imm (_FP_WFRACBITS_S, R, X, Y)
+# define _FP_MUL_MEAT_D(R, X, Y)					\
+  _FP_MUL_MEAT_1_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
+# define _FP_MUL_MEAT_Q(R, X, Y)					\
+  _FP_MUL_MEAT_2_wide_3mul (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
+
+# define _FP_DIV_MEAT_S(R, X, Y)	_FP_DIV_MEAT_1_imm (S, R, X, Y, _FP_DIV_HELP_imm)
+# define _FP_DIV_MEAT_D(R, X, Y)	_FP_DIV_MEAT_1_udiv_norm (D, R, X, Y)
+# define _FP_DIV_MEAT_Q(R, X, Y)	_FP_DIV_MEAT_2_udiv (Q, R, X, Y)
+
+# define _FP_NANFRAC_S		_FP_QNANBIT_S
+# define _FP_NANFRAC_D		_FP_QNANBIT_D
+# define _FP_NANFRAC_Q		_FP_QNANBIT_Q, 0
+
+#endif
+
+#define _FP_NANSIGN_S		0
+#define _FP_NANSIGN_D		0
+#define _FP_NANSIGN_Q		0
+
+#define _FP_KEEPNANFRACP 0
+#define _FP_QNANNEGATEDP 0
+
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)	\
+  do {						\
+    R##_s = _FP_NANSIGN_##fs;			\
+    _FP_FRAC_SET_##wc (R, _FP_NANFRAC_##fs);	\
+    R##_c = FP_CLS_NAN;				\
+  } while (0)
+
+#define _FP_DECL_EX		int _frm __attribute__ ((unused));
+#define FP_ROUNDMODE		_frm
+
+#define FP_RND_NEAREST		FE_TONEAREST
+#define FP_RND_ZERO		FE_TOWARDZERO
+#define FP_RND_PINF		FE_UPWARD
+#define FP_RND_MINF		FE_DOWNWARD
+
+#define FP_EX_INVALID		FE_INVALID
+#define FP_EX_OVERFLOW		FE_OVERFLOW
+#define FP_EX_UNDERFLOW		FE_UNDERFLOW
+#define FP_EX_DIVZERO		FE_DIVBYZERO
+#define FP_EX_INEXACT		FE_INEXACT
+
+#define _FP_TININESS_AFTER_ROUNDING 1
+
+#ifdef __riscv_flen
+# define FP_INIT_ROUNDMODE			\
+do {						\
+  __asm__ volatile ("frrm %0" : "=r" (_frm));	\
+} while (0)
+
+# define FP_HANDLE_EXCEPTIONS					\
+do {								\
+  if (__builtin_expect (_fex, 0))				\
+    __asm__ volatile ("csrs fflags, %0" : : "rK" (_fex));	\
+} while (0)
+#else
+# define FP_INIT_ROUNDMODE	_frm = FP_RND_NEAREST
+#endif
diff --git a/sysdeps/riscv/tininess.h b/sysdeps/riscv/tininess.h
new file mode 100644
index 000000000000..1db37790f881
--- /dev/null
+++ b/sysdeps/riscv/tininess.h
@@ -0,0 +1 @@
+#define TININESS_AFTER_ROUNDING	1
-- 
2.13.6

[PATCH 09/17] RISC-V: RV32F Support

[Palmer Dabbelt]

This contains the base floating-point support for RISC-V, which is
defined by the F extension.  The code in this patch sufficies to
implement RV32F systems only, additional routines are necessary to add
support for RV32D, RV64F, and RV64D.  These additional routines have
been split out to avoid having too large of a patch.
---
 sysdeps/riscv/rv32/rvf/s_lroundf.c    |  31 +++++++
 sysdeps/riscv/rvf/e_sqrtf.c           |  27 ++++++
 sysdeps/riscv/rvf/fclrexcpt.c         |  28 ++++++
 sysdeps/riscv/rvf/fegetenv.c          |  32 +++++++
 sysdeps/riscv/rvf/fegetmode.c         |  27 ++++++
 sysdeps/riscv/rvf/fegetround.c        |  29 ++++++
 sysdeps/riscv/rvf/feholdexcpt.c       |  30 +++++++
 sysdeps/riscv/rvf/fesetenv.c          |  30 +++++++
 sysdeps/riscv/rvf/fesetexcept.c       |  26 ++++++
 sysdeps/riscv/rvf/fesetmode.c         |  31 +++++++
 sysdeps/riscv/rvf/fesetround.c        |  39 ++++++++
 sysdeps/riscv/rvf/feupdateenv.c       |  30 +++++++
 sysdeps/riscv/rvf/fgetexcptflg.c      |  30 +++++++
 sysdeps/riscv/rvf/fraiseexcpt.c       |  30 +++++++
 sysdeps/riscv/rvf/fsetexcptflg.c      |  30 +++++++
 sysdeps/riscv/rvf/ftestexcept.c       |  27 ++++++
 sysdeps/riscv/rvf/get-rounding-mode.h |  32 +++++++
 sysdeps/riscv/rvf/math_private.h      | 161 ++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rvf/s_ceilf.c           |  52 +++++++++++
 sysdeps/riscv/rvf/s_copysignf.c       |  28 ++++++
 sysdeps/riscv/rvf/s_finitef.c         |  28 ++++++
 sysdeps/riscv/rvf/s_floorf.c          |  52 +++++++++++
 sysdeps/riscv/rvf/s_fmaf.c            |  30 +++++++
 sysdeps/riscv/rvf/s_fmaxf.c           |  28 ++++++
 sysdeps/riscv/rvf/s_fminf.c           |  28 ++++++
 sysdeps/riscv/rvf/s_fpclassifyf.c     |  36 ++++++++
 sysdeps/riscv/rvf/s_isinff.c          |  29 ++++++
 sysdeps/riscv/rvf/s_isnanf.c          |  28 ++++++
 sysdeps/riscv/rvf/s_issignalingf.c    |  27 ++++++
 sysdeps/riscv/rvf/s_nearbyintf.c      |  52 +++++++++++
 sysdeps/riscv/rvf/s_rintf.c           |  52 +++++++++++
 sysdeps/riscv/rvf/s_roundevenf.c      |  52 +++++++++++
 sysdeps/riscv/rvf/s_roundf.c          |  52 +++++++++++
 sysdeps/riscv/rvf/s_truncf.c          |  52 +++++++++++
 34 files changed, 1296 insertions(+)
 create mode 100644 sysdeps/riscv/rv32/rvf/s_lroundf.c
 create mode 100644 sysdeps/riscv/rvf/e_sqrtf.c
 create mode 100644 sysdeps/riscv/rvf/fclrexcpt.c
 create mode 100644 sysdeps/riscv/rvf/fegetenv.c
 create mode 100644 sysdeps/riscv/rvf/fegetmode.c
 create mode 100644 sysdeps/riscv/rvf/fegetround.c
 create mode 100644 sysdeps/riscv/rvf/feholdexcpt.c
 create mode 100644 sysdeps/riscv/rvf/fesetenv.c
 create mode 100644 sysdeps/riscv/rvf/fesetexcept.c
 create mode 100644 sysdeps/riscv/rvf/fesetmode.c
 create mode 100644 sysdeps/riscv/rvf/fesetround.c
 create mode 100644 sysdeps/riscv/rvf/feupdateenv.c
 create mode 100644 sysdeps/riscv/rvf/fgetexcptflg.c
 create mode 100644 sysdeps/riscv/rvf/fraiseexcpt.c
 create mode 100644 sysdeps/riscv/rvf/fsetexcptflg.c
 create mode 100644 sysdeps/riscv/rvf/ftestexcept.c
 create mode 100644 sysdeps/riscv/rvf/get-rounding-mode.h
 create mode 100644 sysdeps/riscv/rvf/math_private.h
 create mode 100644 sysdeps/riscv/rvf/s_ceilf.c
 create mode 100644 sysdeps/riscv/rvf/s_copysignf.c
 create mode 100644 sysdeps/riscv/rvf/s_finitef.c
 create mode 100644 sysdeps/riscv/rvf/s_floorf.c
 create mode 100644 sysdeps/riscv/rvf/s_fmaf.c
 create mode 100644 sysdeps/riscv/rvf/s_fmaxf.c
 create mode 100644 sysdeps/riscv/rvf/s_fminf.c
 create mode 100644 sysdeps/riscv/rvf/s_fpclassifyf.c
 create mode 100644 sysdeps/riscv/rvf/s_isinff.c
 create mode 100644 sysdeps/riscv/rvf/s_isnanf.c
 create mode 100644 sysdeps/riscv/rvf/s_issignalingf.c
 create mode 100644 sysdeps/riscv/rvf/s_nearbyintf.c
 create mode 100644 sysdeps/riscv/rvf/s_rintf.c
 create mode 100644 sysdeps/riscv/rvf/s_roundevenf.c
 create mode 100644 sysdeps/riscv/rvf/s_roundf.c
 create mode 100644 sysdeps/riscv/rvf/s_truncf.c

diff --git a/sysdeps/riscv/rv32/rvf/s_lroundf.c b/sysdeps/riscv/rv32/rvf/s_lroundf.c
new file mode 100644
index 000000000000..f31b43293627
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c
@@ -0,0 +1,31 @@
+/* lroundf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long int
+__lroundf (float x)
+{
+  int32_t res;
+  asm ("fcvt.w.s %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__lround, lround)
diff --git a/sysdeps/riscv/rvf/e_sqrtf.c b/sysdeps/riscv/rvf/e_sqrtf.c
new file mode 100644
index 000000000000..711d93e43060
--- /dev/null
+++ b/sysdeps/riscv/rvf/e_sqrtf.c
@@ -0,0 +1,27 @@
+/* Single precision floating point square root.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+
+float
+__ieee754_sqrtf (float x)
+{
+  asm ("fsqrt.s %0, %1" : "=f" (x) : "f" (x));
+  return x;
+}
+strong_alias (__ieee754_sqrtf, __sqrtf_finite)
diff --git a/sysdeps/riscv/rvf/fclrexcpt.c b/sysdeps/riscv/rvf/fclrexcpt.c
new file mode 100644
index 000000000000..bdad377e88da
--- /dev/null
+++ b/sysdeps/riscv/rvf/fclrexcpt.c
@@ -0,0 +1,28 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feclearexcept (int excepts)
+{
+  asm volatile ("csrc fflags, %0" : : "r" (excepts));
+  return 0;
+}
+libm_hidden_def (feclearexcept)
diff --git a/sysdeps/riscv/rvf/fegetenv.c b/sysdeps/riscv/rvf/fegetenv.c
new file mode 100644
index 000000000000..1c29413be5d2
--- /dev/null
+++ b/sysdeps/riscv/rvf/fegetenv.c
@@ -0,0 +1,32 @@
+/* Store current floating-point environment.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+__fegetenv (fenv_t *envp)
+{
+  _FPU_GETCW (*envp);
+
+  /* Success.  */
+  return 0;
+}
+libm_hidden_def (__fegetenv)
+weak_alias (__fegetenv, fegetenv)
+libm_hidden_weak (fegetenv)
diff --git a/sysdeps/riscv/rvf/fegetmode.c b/sysdeps/riscv/rvf/fegetmode.c
new file mode 100644
index 000000000000..67ae14c4ffdd
--- /dev/null
+++ b/sysdeps/riscv/rvf/fegetmode.c
@@ -0,0 +1,27 @@
+/* Store current floating-point control modes.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetmode (femode_t *modep)
+{
+  _FPU_GETCW (*modep);
+  return 0;
+}
diff --git a/sysdeps/riscv/rvf/fegetround.c b/sysdeps/riscv/rvf/fegetround.c
new file mode 100644
index 000000000000..f7692a827b85
--- /dev/null
+++ b/sysdeps/riscv/rvf/fegetround.c
@@ -0,0 +1,29 @@
+/* Return current rounding direction.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+__fegetround (void)
+{
+  return riscv_getround ();
+}
+libm_hidden_def (__fegetround)
+weak_alias (__fegetround, fegetround)
+libm_hidden_weak (fegetround)
diff --git a/sysdeps/riscv/rvf/feholdexcpt.c b/sysdeps/riscv/rvf/feholdexcpt.c
new file mode 100644
index 000000000000..ea9060f3dcd7
--- /dev/null
+++ b/sysdeps/riscv/rvf/feholdexcpt.c
@@ -0,0 +1,30 @@
+/* Store current floating-point environment and clear exceptions.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+__feholdexcept (fenv_t *envp)
+{
+  libc_feholdexcept_riscv (envp);
+  return 0;
+}
+libm_hidden_def (__feholdexcept)
+weak_alias (__feholdexcept, feholdexcept)
+libm_hidden_weak (feholdexcept)
diff --git a/sysdeps/riscv/rvf/fesetenv.c b/sysdeps/riscv/rvf/fesetenv.c
new file mode 100644
index 000000000000..5d02d8010153
--- /dev/null
+++ b/sysdeps/riscv/rvf/fesetenv.c
@@ -0,0 +1,30 @@
+/* Install given floating-point environment.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+__fesetenv (const fenv_t *envp)
+{
+  libc_fesetenv_riscv (envp);
+  return 0;
+}
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/riscv/rvf/fesetexcept.c b/sysdeps/riscv/rvf/fesetexcept.c
new file mode 100644
index 000000000000..70059aa61a20
--- /dev/null
+++ b/sysdeps/riscv/rvf/fesetexcept.c
@@ -0,0 +1,26 @@
+/* Set given exception flags.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+
+int
+fesetexcept (int excepts)
+{
+  asm volatile ("csrs fflags, %0" : : "r" (excepts));
+  return 0;
+}
diff --git a/sysdeps/riscv/rvf/fesetmode.c b/sysdeps/riscv/rvf/fesetmode.c
new file mode 100644
index 000000000000..d39c5626fe09
--- /dev/null
+++ b/sysdeps/riscv/rvf/fesetmode.c
@@ -0,0 +1,31 @@
+/* Install given floating-point control modes.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetmode (const femode_t *modep)
+{
+  asm volatile ("csrc fcsr, %0" : : "r" (~FE_ALL_EXCEPT));
+
+  if (modep != FE_DFL_MODE)
+    asm volatile ("csrs fcsr, %0" : : "r" (*modep & ~FE_ALL_EXCEPT));
+
+  return 0;
+}
diff --git a/sysdeps/riscv/rvf/fesetround.c b/sysdeps/riscv/rvf/fesetround.c
new file mode 100644
index 000000000000..bf705ef0c980
--- /dev/null
+++ b/sysdeps/riscv/rvf/fesetround.c
@@ -0,0 +1,39 @@
+/* Set current rounding direction.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+__fesetround (int round)
+{
+  switch (round)
+    {
+    case FE_TONEAREST:
+    case FE_TOWARDZERO:
+    case FE_DOWNWARD:
+    case FE_UPWARD:
+      riscv_setround (round);
+      return 0;
+    default:
+      return round; /* A nonzero value.  */
+    }
+}
+libm_hidden_def (__fesetround)
+weak_alias (__fesetround, fesetround)
+libm_hidden_weak (fesetround)
diff --git a/sysdeps/riscv/rvf/feupdateenv.c b/sysdeps/riscv/rvf/feupdateenv.c
new file mode 100644
index 000000000000..133d7eca1126
--- /dev/null
+++ b/sysdeps/riscv/rvf/feupdateenv.c
@@ -0,0 +1,30 @@
+/* Install given floating-point environment and raise exceptions.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+__feupdateenv (const fenv_t *envp)
+{
+  libc_feupdateenv_riscv (envp);
+  return 0;
+}
+libm_hidden_def (__feupdateenv)
+weak_alias (__feupdateenv, feupdateenv)
+libm_hidden_weak (feupdateenv)
diff --git a/sysdeps/riscv/rvf/fgetexcptflg.c b/sysdeps/riscv/rvf/fgetexcptflg.c
new file mode 100644
index 000000000000..367f0135d41b
--- /dev/null
+++ b/sysdeps/riscv/rvf/fgetexcptflg.c
@@ -0,0 +1,30 @@
+/* Store current representation for exceptions.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+fegetexceptflag (fexcept_t *flagp, int excepts)
+{
+  /* Get the current exceptions.  */
+  *flagp = riscv_getflags () & excepts;
+
+  /* Success.  */
+  return 0;
+}
diff --git a/sysdeps/riscv/rvf/fraiseexcpt.c b/sysdeps/riscv/rvf/fraiseexcpt.c
new file mode 100644
index 000000000000..dee90c3476c2
--- /dev/null
+++ b/sysdeps/riscv/rvf/fraiseexcpt.c
@@ -0,0 +1,30 @@
+/* Raise given exceptions.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+__feraiseexcept (int excepts)
+{
+  asm volatile ("csrs fflags, %0" : : "r" (excepts));
+  return 0;
+}
+libm_hidden_def (__feraiseexcept)
+weak_alias (__feraiseexcept, feraiseexcept)
+libm_hidden_weak (feraiseexcept)
diff --git a/sysdeps/riscv/rvf/fsetexcptflg.c b/sysdeps/riscv/rvf/fsetexcptflg.c
new file mode 100644
index 000000000000..9e5bebf28994
--- /dev/null
+++ b/sysdeps/riscv/rvf/fsetexcptflg.c
@@ -0,0 +1,30 @@
+/* Set floating-point environment exception handling.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+  fexcept_t flags = *flagp;
+  asm volatile ("csrc fflags, %0" : : "r" (excepts));
+  asm volatile ("csrs fflags, %0" : : "r" (flags & excepts));
+
+  return 0;
+}
diff --git a/sysdeps/riscv/rvf/ftestexcept.c b/sysdeps/riscv/rvf/ftestexcept.c
new file mode 100644
index 000000000000..a248bd63190c
--- /dev/null
+++ b/sysdeps/riscv/rvf/ftestexcept.c
@@ -0,0 +1,27 @@
+/* Test exception in current environment.
+   Copyright (C) 1998-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <math_private.h>
+
+int
+fetestexcept (int excepts)
+{
+  return libc_fetestexcept_riscv (excepts);
+}
+libm_hidden_def (fetestexcept)
diff --git a/sysdeps/riscv/rvf/get-rounding-mode.h b/sysdeps/riscv/rvf/get-rounding-mode.h
new file mode 100644
index 000000000000..42891324ddc3
--- /dev/null
+++ b/sysdeps/riscv/rvf/get-rounding-mode.h
@@ -0,0 +1,32 @@
+/* Determine floating-point rounding mode within libc.  RISC-V version.
+   Copyright (C) 2015-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _RISCV_GET_ROUNDING_MODE_H
+#define _RISCV_GET_ROUNDING_MODE_H
+
+/* Return the floating-point rounding mode.  */
+
+static inline int
+get_rounding_mode (void)
+{
+  int rm;
+  asm volatile ("frrm %0" : "=r" (rm));
+  return rm;
+}
+
+#endif /* get-rounding-mode.h */
diff --git a/sysdeps/riscv/rvf/math_private.h b/sysdeps/riscv/rvf/math_private.h
new file mode 100644
index 000000000000..cdb7858fc8ce
--- /dev/null
+++ b/sysdeps/riscv/rvf/math_private.h
@@ -0,0 +1,161 @@
+/* Private floating point rounding and exceptions handling.  RISC-V version.
+   Copyright (C) 2014-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef RISCV_MATH_PRIVATE_H
+#define RISCV_MATH_PRIVATE_H 1
+
+#include <fenv.h>
+#include <fpu_control.h>
+#include <get-rounding-mode.h>
+
+static __always_inline int
+riscv_getround (void)
+{
+  return get_rounding_mode ();
+}
+
+static __always_inline void
+riscv_setround (int rm)
+{
+  asm volatile ("fsrm %z0" : : "rJ" (rm));
+}
+
+static __always_inline int
+riscv_getflags (void)
+{
+  int flags;
+  asm volatile ("frflags %0" : "=r" (flags));
+  return flags;
+}
+
+static __always_inline void
+riscv_setflags (int flags)
+{
+  asm volatile ("fsflags %z0" : : "rJ" (flags));
+}
+
+static __always_inline void
+libc_feholdexcept_riscv (fenv_t *envp)
+{
+  asm volatile ("csrrc %0, fcsr, %1" : "=r" (*envp) : "i" (FE_ALL_EXCEPT));
+}
+
+#define libc_feholdexcept  libc_feholdexcept_riscv
+#define libc_feholdexceptf libc_feholdexcept_riscv
+#define libc_feholdexceptl libc_feholdexcept_riscv
+
+static __always_inline void
+libc_fesetround_riscv (int round)
+{
+  riscv_setround (round);
+}
+
+#define libc_fesetround  libc_fesetround_riscv
+#define libc_fesetroundf libc_fesetround_riscv
+#define libc_fesetroundl libc_fesetround_riscv
+
+static __always_inline void
+libc_feholdexcept_setround_riscv (fenv_t *envp, int round)
+{
+  libc_fesetround_riscv (round);
+  libc_feholdexcept_riscv (envp);
+}
+
+#define libc_feholdexcept_setround  libc_feholdexcept_setround_riscv
+#define libc_feholdexcept_setroundf libc_feholdexcept_setround_riscv
+#define libc_feholdexcept_setroundl libc_feholdexcept_setround_riscv
+
+static __always_inline int
+libc_fetestexcept_riscv (int ex)
+{
+  return riscv_getflags () & ex;
+}
+
+#define libc_fetestexcept  libc_fetestexcept_riscv
+#define libc_fetestexceptf libc_fetestexcept_riscv
+#define libc_fetestexceptl libc_fetestexcept_riscv
+
+static __always_inline void
+libc_fesetenv_riscv (const fenv_t *envp)
+{
+  long int env = (long int) envp - (long int) FE_DFL_ENV;
+  if (env != 0)
+    env = *envp;
+
+  _FPU_SETCW (env);
+}
+
+#define libc_fesetenv  libc_fesetenv_riscv
+#define libc_fesetenvf libc_fesetenv_riscv
+#define libc_fesetenvl libc_fesetenv_riscv
+#define libc_feresetround_noex  libc_fesetenv_riscv
+#define libc_feresetround_noexf libc_fesetenv_riscv
+#define libc_feresetround_noexl libc_fesetenv_riscv
+
+static __always_inline int
+libc_feupdateenv_test_riscv (const fenv_t *envp, int ex)
+{
+  fenv_t env = *envp;
+  int flags = riscv_getflags ();
+  asm volatile ("csrw fcsr, %z0" : : "rJ" (env | flags));
+  return flags & ex;
+}
+
+#define libc_feupdateenv_test  libc_feupdateenv_test_riscv
+#define libc_feupdateenv_testf libc_feupdateenv_test_riscv
+#define libc_feupdateenv_testl libc_feupdateenv_test_riscv
+
+static __always_inline void
+libc_feupdateenv_riscv (const fenv_t *envp)
+{
+  _FPU_SETCW (*envp | riscv_getflags ());
+}
+
+#define libc_feupdateenv  libc_feupdateenv_riscv
+#define libc_feupdateenvf libc_feupdateenv_riscv
+#define libc_feupdateenvl libc_feupdateenv_riscv
+
+static __always_inline void
+libc_feholdsetround_riscv (fenv_t *envp, int round)
+{
+  /* Note this implementation makes an improperly-formatted fenv_t and
+     so should only be used in conjunction with libc_feresetround.  */
+  int old_round;
+  asm volatile ("csrrw %0, frm, %z1" : "=r" (old_round) : "rJ" (round));
+  *envp = old_round;
+}
+
+#define libc_feholdsetround  libc_feholdsetround_riscv
+#define libc_feholdsetroundf libc_feholdsetround_riscv
+#define libc_feholdsetroundl libc_feholdsetround_riscv
+
+static __always_inline void
+libc_feresetround_riscv (fenv_t *envp)
+{
+  /* Note this implementation takes an improperly-formatted fenv_t and
+     so should only be used in conjunction with libc_feholdsetround.  */
+  riscv_setround (*envp);
+}
+
+#define libc_feresetround  libc_feresetround_riscv
+#define libc_feresetroundf libc_feresetround_riscv
+#define libc_feresetroundl libc_feresetround_riscv
+
+#include_next <math_private.h>
+
+#endif
diff --git a/sysdeps/riscv/rvf/s_ceilf.c b/sysdeps/riscv/rvf/s_ceilf.c
new file mode 100644
index 000000000000..d7e291acf8c0
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_ceilf.c
@@ -0,0 +1,52 @@
+/* ceilf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__ceilf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1, rup" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1, rup" : "=f" (new_x) : "r" (i));
+
+      /* ceil(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__ceil, ceil)
diff --git a/sysdeps/riscv/rvf/s_copysignf.c b/sysdeps/riscv/rvf/s_copysignf.c
new file mode 100644
index 000000000000..4d1c122f7ea5
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_copysignf.c
@@ -0,0 +1,28 @@
+/* copysignf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+
+float
+__copysignf (float x, float y)
+{
+  asm ("fsgnj.s %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_float (__copysign, copysign)
diff --git a/sysdeps/riscv/rvf/s_finitef.c b/sysdeps/riscv/rvf/s_finitef.c
new file mode 100644
index 000000000000..04ce08719b4b
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_finitef.c
@@ -0,0 +1,28 @@
+/* finitef().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__finitef (float x)
+{
+  return _FCLASS (x) & ~(_FCLASS_INF | _FCLASS_NAN);
+}
+hidden_def (__finitef)
+weak_alias (__finitef, finitef)
diff --git a/sysdeps/riscv/rvf/s_floorf.c b/sysdeps/riscv/rvf/s_floorf.c
new file mode 100644
index 000000000000..3c9c625e2f2a
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_floorf.c
@@ -0,0 +1,52 @@
+/* floorf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__floorf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1, rdn" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1, rdn" : "=f" (new_x) : "r" (i));
+
+      /* floor(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__floor, floor)
diff --git a/sysdeps/riscv/rvf/s_fmaf.c b/sysdeps/riscv/rvf/s_fmaf.c
new file mode 100644
index 000000000000..946e7ed0c915
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_fmaf.c
@@ -0,0 +1,30 @@
+/* fmaf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <fenv.h>
+#include <ieee754.h>
+#include <libm-alias-float.h>
+
+float
+__fmaf (float x, float y, float z)
+{
+  asm ("fmadd.s %0, %1, %2, %3" : "=f" (x) : "f" (x), "f" (y), "f" (z));
+  return x;
+}
+libm_alias_float (__fma, fma)
diff --git a/sysdeps/riscv/rvf/s_fmaxf.c b/sysdeps/riscv/rvf/s_fmaxf.c
new file mode 100644
index 000000000000..3293f2f41ca1
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_fmaxf.c
@@ -0,0 +1,28 @@
+/* fmaxf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+
+float
+__fmaxf (float x, float y)
+{
+  asm ("fmax.s %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_float (__fmax, fmax)
diff --git a/sysdeps/riscv/rvf/s_fminf.c b/sysdeps/riscv/rvf/s_fminf.c
new file mode 100644
index 000000000000..e4411f04b25c
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_fminf.c
@@ -0,0 +1,28 @@
+/* fminf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+
+float
+__fminf (float x, float y)
+{
+  asm ("fmin.s %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_float (__fmin, fmin)
diff --git a/sysdeps/riscv/rvf/s_fpclassifyf.c b/sysdeps/riscv/rvf/s_fpclassifyf.c
new file mode 100644
index 000000000000..4abcf3edac59
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_fpclassifyf.c
@@ -0,0 +1,36 @@
+/* fpclassifyf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__fpclassifyf (float x)
+{
+  int cls = _FCLASS (x);
+  if (__builtin_expect (cls & _FCLASS_NORM, _FCLASS_NORM))
+    return FP_NORMAL;
+  if (__builtin_expect (cls & _FCLASS_ZERO, _FCLASS_ZERO))
+    return FP_ZERO;
+  if (__builtin_expect (cls & _FCLASS_SUBNORM, _FCLASS_SUBNORM))
+    return FP_SUBNORMAL;
+  if (__builtin_expect (cls & _FCLASS_INF, _FCLASS_INF))
+    return FP_INFINITE;
+  return FP_NAN;
+}
+libm_hidden_def (__fpclassifyf)
diff --git a/sysdeps/riscv/rvf/s_isinff.c b/sysdeps/riscv/rvf/s_isinff.c
new file mode 100644
index 000000000000..1c7413190cdf
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_isinff.c
@@ -0,0 +1,29 @@
+/* isinff().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__isinff (float x)
+{
+  int cls = _FCLASS (x);
+  return -((cls & _FCLASS_MINF) ? 1 : 0) | ((cls & _FCLASS_PINF) ? 1 : 0);
+}
+hidden_def (__isinff)
+weak_alias (__isinff, isinff)
diff --git a/sysdeps/riscv/rvf/s_isnanf.c b/sysdeps/riscv/rvf/s_isnanf.c
new file mode 100644
index 000000000000..30a88bb23c26
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_isnanf.c
@@ -0,0 +1,28 @@
+/* isnanf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__isnanf (float x)
+{
+  return (_FCLASS (x) & _FCLASS_NAN) != 0;
+}
+hidden_def (__isnanf)
+weak_alias (__isnanf, isnanf)
diff --git a/sysdeps/riscv/rvf/s_issignalingf.c b/sysdeps/riscv/rvf/s_issignalingf.c
new file mode 100644
index 000000000000..e67efc794b71
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_issignalingf.c
@@ -0,0 +1,27 @@
+/* issignalingf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__issignalingf (float x)
+{
+  return (_FCLASS (x) & _FCLASS_SNAN) != 0;
+}
+libm_hidden_def (__issignalingf)
diff --git a/sysdeps/riscv/rvf/s_nearbyintf.c b/sysdeps/riscv/rvf/s_nearbyintf.c
new file mode 100644
index 000000000000..d653794d7174
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_nearbyintf.c
@@ -0,0 +1,52 @@
+/* Round to int floating-point values.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__nearbyintf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1" : "=f" (new_x) : "r" (i));
+
+      /* nearbyint(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__nearbyint, nearbyint)
diff --git a/sysdeps/riscv/rvf/s_rintf.c b/sysdeps/riscv/rvf/s_rintf.c
new file mode 100644
index 000000000000..2ec3877a4fb6
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_rintf.c
@@ -0,0 +1,52 @@
+/* rintf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__rintf (float x)
+{
+  bool nan;
+  float mag;
+
+  nan = isnan (x);
+  mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm ("fcvt.w.s %0, %1" : "=r" (i) : "f" (x));
+      asm ("fcvt.s.w %0, %1" : "=f" (new_x) : "r" (i));
+
+      /* rint(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+    }
+
+  return x;
+}
+
+libm_alias_float (__rint, rint)
diff --git a/sysdeps/riscv/rvf/s_roundevenf.c b/sysdeps/riscv/rvf/s_roundevenf.c
new file mode 100644
index 000000000000..48086c28ee53
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_roundevenf.c
@@ -0,0 +1,52 @@
+/* Round to nearest integer value, rounding halfway cases to even.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__roundevenf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1, rne" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1, rne" : "=f" (new_x) : "r" (i));
+
+      /* roundeven(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__roundeven, roundeven)
diff --git a/sysdeps/riscv/rvf/s_roundf.c b/sysdeps/riscv/rvf/s_roundf.c
new file mode 100644
index 000000000000..dedf57cbb340
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_roundf.c
@@ -0,0 +1,52 @@
+/* roundf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__roundf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1, rmm" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1, rmm" : "=f" (new_x) : "r" (i));
+
+      /* round(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__round, round)
diff --git a/sysdeps/riscv/rvf/s_truncf.c b/sysdeps/riscv/rvf/s_truncf.c
new file mode 100644
index 000000000000..e23926a2aeeb
--- /dev/null
+++ b/sysdeps/riscv/rvf/s_truncf.c
@@ -0,0 +1,52 @@
+/* truncf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+float
+__truncf (float x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  float mag = fabsf (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1 << __FLT_MANT_DIG__))
+    {
+      int32_t i;
+      float new_x;
+
+      asm volatile ("fcvt.w.s %0, %1, rtz" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.s.w %0, %1, rtz" : "=f" (new_x) : "r" (i));
+
+      /* trunc(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysignf (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_float (__trunc, trunc)
-- 
2.13.6

[PATCH 10/17] RISC-V: RV32D, RV64F, and RV64D Support

[Palmer Dabbelt]

This patch adds support for the various other hardware floating point
configurations that RISC-V supports.  This is split from the RV32F patch
to avoid mailing list size restrictions.
---
 sysdeps/riscv/rv32/rvd/s_lrint.c     | 31 +++++++++++++++++++++
 sysdeps/riscv/rv32/rvd/s_lround.c    | 31 +++++++++++++++++++++
 sysdeps/riscv/rv32/rvf/s_lrintf.c    | 31 +++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_ceil.c      | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_floor.c     | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_llrint.c    | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_llround.c   | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_lrint.c     | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_lround.c    | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_nearbyint.c | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_rint.c      | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_round.c     | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_roundeven.c | 53 ++++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvd/s_trunc.c     | 52 +++++++++++++++++++++++++++++++++++
 sysdeps/riscv/rv64/rvf/s_llrintf.c   | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvf/s_llroundf.c  | 30 ++++++++++++++++++++
 sysdeps/riscv/rv64/rvf/s_lrintf.c    | 31 +++++++++++++++++++++
 sysdeps/riscv/rv64/rvf/s_lroundf.c   | 31 +++++++++++++++++++++
 sysdeps/riscv/rvd/e_sqrt.c           | 27 ++++++++++++++++++
 sysdeps/riscv/rvd/s_copysign.c       | 28 +++++++++++++++++++
 sysdeps/riscv/rvd/s_finite.c         | 28 +++++++++++++++++++
 sysdeps/riscv/rvd/s_fma.c            | 30 ++++++++++++++++++++
 sysdeps/riscv/rvd/s_fmax.c           | 28 +++++++++++++++++++
 sysdeps/riscv/rvd/s_fmin.c           | 28 +++++++++++++++++++
 sysdeps/riscv/rvd/s_fpclassify.c     | 36 ++++++++++++++++++++++++
 sysdeps/riscv/rvd/s_isinf.c          | 29 ++++++++++++++++++++
 sysdeps/riscv/rvd/s_isnan.c          | 28 +++++++++++++++++++
 sysdeps/riscv/rvd/s_issignaling.c    | 27 ++++++++++++++++++
 28 files changed, 989 insertions(+)
 create mode 100644 sysdeps/riscv/rv32/rvd/s_lrint.c
 create mode 100644 sysdeps/riscv/rv32/rvd/s_lround.c
 create mode 100644 sysdeps/riscv/rv32/rvf/s_lrintf.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_ceil.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_floor.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_llrint.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_llround.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_lrint.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_lround.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_nearbyint.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_rint.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_round.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_roundeven.c
 create mode 100644 sysdeps/riscv/rv64/rvd/s_trunc.c
 create mode 100644 sysdeps/riscv/rv64/rvf/s_llrintf.c
 create mode 100644 sysdeps/riscv/rv64/rvf/s_llroundf.c
 create mode 100644 sysdeps/riscv/rv64/rvf/s_lrintf.c
 create mode 100644 sysdeps/riscv/rv64/rvf/s_lroundf.c
 create mode 100644 sysdeps/riscv/rvd/e_sqrt.c
 create mode 100644 sysdeps/riscv/rvd/s_copysign.c
 create mode 100644 sysdeps/riscv/rvd/s_finite.c
 create mode 100644 sysdeps/riscv/rvd/s_fma.c
 create mode 100644 sysdeps/riscv/rvd/s_fmax.c
 create mode 100644 sysdeps/riscv/rvd/s_fmin.c
 create mode 100644 sysdeps/riscv/rvd/s_fpclassify.c
 create mode 100644 sysdeps/riscv/rvd/s_isinf.c
 create mode 100644 sysdeps/riscv/rvd/s_isnan.c
 create mode 100644 sysdeps/riscv/rvd/s_issignaling.c

diff --git a/sysdeps/riscv/rv32/rvd/s_lrint.c b/sysdeps/riscv/rv32/rvd/s_lrint.c
new file mode 100644
index 000000000000..4d5bdbc200e4
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lrint.c
@@ -0,0 +1,31 @@
+/* lrint().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long int
+__lrint (double x)
+{
+  int32_t res;
+  asm ("fcvt.w.d %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__lrint, lrint)
diff --git a/sysdeps/riscv/rv32/rvd/s_lround.c b/sysdeps/riscv/rv32/rvd/s_lround.c
new file mode 100644
index 000000000000..f5d9cf2e070a
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lround.c
@@ -0,0 +1,31 @@
+/* lround().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long int
+__lround (double x)
+{
+  int32_t res;
+  asm ("fcvt.w.d %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__lround, lround)
diff --git a/sysdeps/riscv/rv32/rvf/s_lrintf.c b/sysdeps/riscv/rv32/rvf/s_lrintf.c
new file mode 100644
index 000000000000..08d44fa7385a
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lrintf.c
@@ -0,0 +1,31 @@
+/* lrintf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long int
+__lrintf (float x)
+{
+  int32_t res;
+  asm ("fcvt.w.s %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__lrint, lrint)
diff --git a/sysdeps/riscv/rv64/rvd/s_ceil.c b/sysdeps/riscv/rv64/rvd/s_ceil.c
new file mode 100644
index 000000000000..af99ecca3d07
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_ceil.c
@@ -0,0 +1,52 @@
+/* ceil().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__ceil (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1, rup" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1, rup" : "=f" (new_x) : "r" (i));
+
+      /* ceil(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_double (__ceil, ceil)
diff --git a/sysdeps/riscv/rv64/rvd/s_floor.c b/sysdeps/riscv/rv64/rvd/s_floor.c
new file mode 100644
index 000000000000..f34af98cce40
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_floor.c
@@ -0,0 +1,52 @@
+/* floor().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__floor (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1, rdn" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1, rdn" : "=f" (new_x) : "r" (i));
+
+      /* floor(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_double (__floor, floor)
diff --git a/sysdeps/riscv/rv64/rvd/s_llrint.c b/sysdeps/riscv/rv64/rvd/s_llrint.c
new file mode 100644
index 000000000000..8f37090d743a
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_llrint.c
@@ -0,0 +1,30 @@
+/* llrint().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long long int
+__llrint (double x)
+{
+  int64_t res;
+  asm ("fcvt.l.d %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__llrint, llrint)
diff --git a/sysdeps/riscv/rv64/rvd/s_llround.c b/sysdeps/riscv/rv64/rvd/s_llround.c
new file mode 100644
index 000000000000..b7e448876be3
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_llround.c
@@ -0,0 +1,30 @@
+/* llround().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long long int
+__llround (double x)
+{
+  int64_t res;
+  asm ("fcvt.l.d %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__llround, llround)
diff --git a/sysdeps/riscv/rv64/rvd/s_lrint.c b/sysdeps/riscv/rv64/rvd/s_lrint.c
new file mode 100644
index 000000000000..48f61be96676
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_lrint.c
@@ -0,0 +1,30 @@
+/* lrint().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long int
+__lrint (double x)
+{
+  int64_t res;
+  asm ("fcvt.l.d %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__lrint, lrint)
diff --git a/sysdeps/riscv/rv64/rvd/s_lround.c b/sysdeps/riscv/rv64/rvd/s_lround.c
new file mode 100644
index 000000000000..392233cd048c
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_lround.c
@@ -0,0 +1,30 @@
+/* llround().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+long int
+__lround (double x)
+{
+  int64_t res;
+  asm ("fcvt.l.d %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_double (__lround, lround)
diff --git a/sysdeps/riscv/rv64/rvd/s_nearbyint.c b/sysdeps/riscv/rv64/rvd/s_nearbyint.c
new file mode 100644
index 000000000000..e17f03842908
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_nearbyint.c
@@ -0,0 +1,52 @@
+/* nearbyint().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__nearbyint (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1" : "=f" (new_x) : "r" (i));
+
+      /* nearbyint(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_double (__nearbyint, nearbyint)
diff --git a/sysdeps/riscv/rv64/rvd/s_rint.c b/sysdeps/riscv/rv64/rvd/s_rint.c
new file mode 100644
index 000000000000..ef2380ea7fda
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_rint.c
@@ -0,0 +1,52 @@
+/* rint().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__rint (double x)
+{
+  bool nan;
+  double mag;
+
+  nan = isnan (x);
+  mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm ("fcvt.l.d %0, %1" : "=r" (i) : "f" (x));
+      asm ("fcvt.d.l %0, %1" : "=f" (new_x) : "r" (i));
+
+      /* rint(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+    }
+
+  return x;
+}
+
+libm_alias_double (__rint, rint)
diff --git a/sysdeps/riscv/rv64/rvd/s_round.c b/sysdeps/riscv/rv64/rvd/s_round.c
new file mode 100644
index 000000000000..22cff63e093b
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_round.c
@@ -0,0 +1,52 @@
+/* round().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__round (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1, rmm" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1, rmm" : "=f" (new_x) : "r" (i));
+
+      /* round(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_double (__round, round)
diff --git a/sysdeps/riscv/rv64/rvd/s_roundeven.c b/sysdeps/riscv/rv64/rvd/s_roundeven.c
new file mode 100644
index 000000000000..26a0b2ded3d1
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_roundeven.c
@@ -0,0 +1,53 @@
+/* Round to nearest integer value, rounding halfway cases to even.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__roundeven (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1, rne" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1, rne" : "=f" (new_x) : "r" (i));
+
+      /* roundeven(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+hidden_def (__roundeven)
+libm_alias_double (__roundeven, roundeven)
diff --git a/sysdeps/riscv/rv64/rvd/s_trunc.c b/sysdeps/riscv/rv64/rvd/s_trunc.c
new file mode 100644
index 000000000000..a0f78e6cd186
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/s_trunc.c
@@ -0,0 +1,52 @@
+/* trunc().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-double.h>
+#include <stdint.h>
+
+double
+__trunc (double x)
+{
+  int flags = riscv_getflags ();
+  bool nan = isnan (x);
+  double mag = fabs (x);
+
+  if (nan)
+    return x + x;
+
+  if (mag < (1ULL << __DBL_MANT_DIG__))
+    {
+      int64_t i;
+      double new_x;
+
+      asm volatile ("fcvt.l.d %0, %1, rtz" : "=r" (i) : "f" (x));
+      asm volatile ("fcvt.d.l %0, %1, rtz" : "=f" (new_x) : "r" (i));
+
+      /* trunc(-0) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign (new_x, x);
+
+      riscv_setflags (flags);
+    }
+
+  return x;
+}
+
+libm_alias_double (__trunc, trunc)
diff --git a/sysdeps/riscv/rv64/rvf/s_llrintf.c b/sysdeps/riscv/rv64/rvf/s_llrintf.c
new file mode 100644
index 000000000000..ddfda6cfe2f6
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvf/s_llrintf.c
@@ -0,0 +1,30 @@
+/* Round argument to nearest integral value according to current direction.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long long int
+__llrintf (float x)
+{
+  int64_t res;
+  asm ("fcvt.l.s %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__llrint, llrint)
diff --git a/sysdeps/riscv/rv64/rvf/s_llroundf.c b/sysdeps/riscv/rv64/rvf/s_llroundf.c
new file mode 100644
index 000000000000..7132f81d2fda
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvf/s_llroundf.c
@@ -0,0 +1,30 @@
+/* Round float value to long long int.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long long int
+__llroundf (float x)
+{
+  int64_t res;
+  asm ("fcvt.l.s %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__llround, llround)
diff --git a/sysdeps/riscv/rv64/rvf/s_lrintf.c b/sysdeps/riscv/rv64/rvf/s_lrintf.c
new file mode 100644
index 000000000000..d8b2fe88bf5a
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvf/s_lrintf.c
@@ -0,0 +1,31 @@
+/* lrintf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long int
+__lrintf (float x)
+{
+  int64_t res;
+  asm ("fcvt.l.s %0, %1" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__lrint, lrint)
diff --git a/sysdeps/riscv/rv64/rvf/s_lroundf.c b/sysdeps/riscv/rv64/rvf/s_lroundf.c
new file mode 100644
index 000000000000..010ce6904d07
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvf/s_lroundf.c
@@ -0,0 +1,31 @@
+/* lroundf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-float.h>
+#include <stdint.h>
+
+long int
+__lroundf (float x)
+{
+  int64_t res;
+  asm ("fcvt.l.s %0, %1, rmm" : "=r" (res) : "f" (x));
+  return res;
+}
+
+libm_alias_float (__lround, lround)
diff --git a/sysdeps/riscv/rvd/e_sqrt.c b/sysdeps/riscv/rvd/e_sqrt.c
new file mode 100644
index 000000000000..66627eec21b8
--- /dev/null
+++ b/sysdeps/riscv/rvd/e_sqrt.c
@@ -0,0 +1,27 @@
+/* Double precision floating point square root.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+
+double
+__ieee754_sqrt (double x)
+{
+  asm ("fsqrt.d %0, %1" : "=f" (x) : "f" (x));
+  return x;
+}
+strong_alias (__ieee754_sqrt, __sqrt_finite)
diff --git a/sysdeps/riscv/rvd/s_copysign.c b/sysdeps/riscv/rvd/s_copysign.c
new file mode 100644
index 000000000000..36fef55aa276
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_copysign.c
@@ -0,0 +1,28 @@
+/* Copy sign bit between floating-point values.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+
+double
+__copysign (double x, double y)
+{
+  asm ("fsgnj.d %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_double (__copysign, copysign)
diff --git a/sysdeps/riscv/rvd/s_finite.c b/sysdeps/riscv/rvd/s_finite.c
new file mode 100644
index 000000000000..402ae3fa3a0a
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_finite.c
@@ -0,0 +1,28 @@
+/* finite().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__finite (double x)
+{
+  return _FCLASS (x) & ~(_FCLASS_INF | _FCLASS_NAN);
+}
+hidden_def (__finite)
+weak_alias (__finite, finite)
diff --git a/sysdeps/riscv/rvd/s_fma.c b/sysdeps/riscv/rvd/s_fma.c
new file mode 100644
index 000000000000..165557962f18
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_fma.c
@@ -0,0 +1,30 @@
+/* Double precision floating point fused multiply-add.  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <fenv.h>
+#include <ieee754.h>
+#include <libm-alias-double.h>
+
+double
+__fma (double x, double y, double z)
+{
+  asm ("fmadd.d %0, %1, %2, %3" : "=f" (x) : "f" (x), "f" (y), "f" (z));
+  return x;
+}
+libm_alias_double (__fma, fma)
diff --git a/sysdeps/riscv/rvd/s_fmax.c b/sysdeps/riscv/rvd/s_fmax.c
new file mode 100644
index 000000000000..ef8f1344ce5a
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_fmax.c
@@ -0,0 +1,28 @@
+/* fmax().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+
+double
+__fmax (double x, double y)
+{
+  asm ("fmax.d %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_double (__fmax, fmax)
diff --git a/sysdeps/riscv/rvd/s_fmin.c b/sysdeps/riscv/rvd/s_fmin.c
new file mode 100644
index 000000000000..c6ff24cefb8a
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_fmin.c
@@ -0,0 +1,28 @@
+/* fmin().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-double.h>
+
+double
+__fmin (double x, double y)
+{
+  asm ("fmin.d %0, %1, %2" : "=f" (x) : "f" (x), "f" (y));
+  return x;
+}
+libm_alias_double (__fmin, fmin)
diff --git a/sysdeps/riscv/rvd/s_fpclassify.c b/sysdeps/riscv/rvd/s_fpclassify.c
new file mode 100644
index 000000000000..fe693c2f4a0f
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_fpclassify.c
@@ -0,0 +1,36 @@
+/* fpclassify().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__fpclassify (double x)
+{
+  int cls = _FCLASS (x);
+  if (__builtin_expect (cls & _FCLASS_NORM, _FCLASS_NORM))
+    return FP_NORMAL;
+  if (__builtin_expect (cls & _FCLASS_ZERO, _FCLASS_ZERO))
+    return FP_ZERO;
+  if (__builtin_expect (cls & _FCLASS_SUBNORM, _FCLASS_SUBNORM))
+    return FP_SUBNORMAL;
+  if (__builtin_expect (cls & _FCLASS_INF, _FCLASS_INF))
+    return FP_INFINITE;
+  return FP_NAN;
+}
+libm_hidden_def (__fpclassify)
diff --git a/sysdeps/riscv/rvd/s_isinf.c b/sysdeps/riscv/rvd/s_isinf.c
new file mode 100644
index 000000000000..1b9767a71839
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_isinf.c
@@ -0,0 +1,29 @@
+/* isinf().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__isinf (double x)
+{
+  int cls = _FCLASS (x);
+  return -((cls & _FCLASS_MINF) ? 1 : 0) | ((cls & _FCLASS_PINF) ? 1 : 0);
+}
+hidden_def (__isinf)
+weak_alias (__isinf, isinf)
diff --git a/sysdeps/riscv/rvd/s_isnan.c b/sysdeps/riscv/rvd/s_isnan.c
new file mode 100644
index 000000000000..3739de7ec78a
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_isnan.c
@@ -0,0 +1,28 @@
+/* isnan().  RISC_V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__isnan (double x)
+{
+  return (_FCLASS (x) & _FCLASS_NAN) != 0;
+}
+hidden_def (__isnan)
+weak_alias (__isnan, isnan)
diff --git a/sysdeps/riscv/rvd/s_issignaling.c b/sysdeps/riscv/rvd/s_issignaling.c
new file mode 100644
index 000000000000..1b65206e9af8
--- /dev/null
+++ b/sysdeps/riscv/rvd/s_issignaling.c
@@ -0,0 +1,27 @@
+/* issignaling().  RISC-V version.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+
+int
+__issignaling (double x)
+{
+  return (_FCLASS (x) & _FCLASS_SNAN) != 0;
+}
+libm_hidden_def (__issignaling)
-- 
2.13.6

[PATCH 11/17] RISC-V: Atomic and Locking Routines

[Palmer Dabbelt]

This patch implements various atomic and locking routines on RISC-V.  We
mandate the A extension on Linux-capable RISC-V systems, so this can
rely on always having the various atomic instructions availiable.
---
 sysdeps/riscv/nptl/bits/pthreadtypes-arch.h    |  76 ++++++++++
 sysdeps/riscv/nptl/bits/semaphore.h            |  33 +++++
 sysdeps/riscv/nptl/libc-lowlevellock.c         |   8 +
 sysdeps/unix/sysv/linux/riscv/atomic-machine.h | 194 +++++++++++++++++++++++++
 4 files changed, 311 insertions(+)
 create mode 100644 sysdeps/riscv/nptl/bits/pthreadtypes-arch.h
 create mode 100644 sysdeps/riscv/nptl/bits/semaphore.h
 create mode 100644 sysdeps/riscv/nptl/libc-lowlevellock.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/atomic-machine.h

diff --git a/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h b/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h
new file mode 100644
index 000000000000..3642ff644979
--- /dev/null
+++ b/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h
@@ -0,0 +1,76 @@
+/* Machine-specific pthread type layouts.  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_PTHREADTYPES_ARCH_H
+#define _BITS_PTHREADTYPES_ARCH_H	1
+
+#include <endian.h>
+
+#if __riscv_xlen == 64
+# define __SIZEOF_PTHREAD_ATTR_T 		56
+# define __SIZEOF_PTHREAD_MUTEX_T 		40
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 		 4
+# define __SIZEOF_PTHREAD_COND_T 		48
+# define __SIZEOF_PTHREAD_CONDATTR_T 		 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 		56
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 		 8
+# define __SIZEOF_PTHREAD_BARRIER_T 		32
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 	 4
+#else
+# define __SIZEOF_PTHREAD_ATTR_T 		32
+# define __SIZEOF_PTHREAD_MUTEX_T 		32
+# define __SIZEOF_PTHREAD_MUTEXATTR_T 		 4
+# define __SIZEOF_PTHREAD_COND_T 		48
+# define __SIZEOF_PTHREAD_CONDATTR_T 		 4
+# define __SIZEOF_PTHREAD_RWLOCK_T 		48
+# define __SIZEOF_PTHREAD_RWLOCKATTR_T 		 8
+# define __SIZEOF_PTHREAD_BARRIER_T 		20
+# define __SIZEOF_PTHREAD_BARRIERATTR_T 	 4
+#endif
+
+#define __PTHREAD_COMPAT_PADDING_MID
+#define __PTHREAD_COMPAT_PADDING_END
+#define __PTHREAD_MUTEX_LOCK_ELISION		0
+#define __PTHREAD_MUTEX_USE_UNION	 	0
+#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND	0
+
+#define __LOCK_ALIGNMENT
+#define __ONCE_ALIGNMENT
+
+/* There is a lot of padding in this structure.  While it's not strictly
+   necessary on RISC-V, we're going to leave it in to be on the safe side in
+   case it's needed in the future.  Most other architectures have the padding,
+   so this gives us the same extensibility as everyone else has.  */
+struct __pthread_rwlock_arch_t
+{
+  unsigned int __readers;
+  unsigned int __writers;
+  unsigned int __wrphase_futex;
+  unsigned int __writers_futex;
+  unsigned int __pad3;
+  unsigned int __pad4;
+  int __cur_writer;
+  int __shared;
+  unsigned long int __pad1;
+  unsigned long int __pad2;
+  unsigned int __flags;
+};
+
+#define __PTHREAD_RWLOCK_ELISION_EXTRA 		0
+
+#endif	/* bits/pthreadtypes.h */
diff --git a/sysdeps/riscv/nptl/bits/semaphore.h b/sysdeps/riscv/nptl/bits/semaphore.h
new file mode 100644
index 000000000000..2fed17d0e530
--- /dev/null
+++ b/sysdeps/riscv/nptl/bits/semaphore.h
@@ -0,0 +1,33 @@
+/* Machine-specific POSIX semaphore type layouts.  RISC-V version.
+   Copyright (C) 2002-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+#define __SIZEOF_SEM_T	(4 * __SIZEOF_POINTER__)
+
+/* Value returned if `sem_open' failed.  */
+#define SEM_FAILED      ((sem_t *) 0)
+
+
+typedef union
+{
+  char __size[__SIZEOF_SEM_T];
+  long int __align;
+} sem_t;
diff --git a/sysdeps/riscv/nptl/libc-lowlevellock.c b/sysdeps/riscv/nptl/libc-lowlevellock.c
new file mode 100644
index 000000000000..9523fb46a596
--- /dev/null
+++ b/sysdeps/riscv/nptl/libc-lowlevellock.c
@@ -0,0 +1,8 @@
+/* This kludge works around a libpthread static linking problem:
+   https://sourceware.org/bugzilla/show_bug.cgi?id=15648.  */
+
+#ifndef SHARED
+# define __lll_lock_wait_private weak_function __lll_lock_wait_private
+#endif
+
+#include <lowlevellock.c>
diff --git a/sysdeps/unix/sysv/linux/riscv/atomic-machine.h b/sysdeps/unix/sysv/linux/riscv/atomic-machine.h
new file mode 100644
index 000000000000..3d967d3b08f0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/atomic-machine.h
@@ -0,0 +1,194 @@
+/* Low-level functions for atomic operations. RISC-V version.
+   Copyright (C) 2014-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LINUX_RISCV_BITS_ATOMIC_H
+#define _LINUX_RISCV_BITS_ATOMIC_H 1
+
+#include <stdint.h>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+#define atomic_full_barrier() __sync_synchronize ()
+
+#ifdef __riscv_atomic
+
+# define __HAVE_64B_ATOMICS (__riscv_xlen >= 64)
+# define USE_ATOMIC_COMPILER_BUILTINS 1
+# define ATOMIC_EXCHANGE_USES_CAS 0
+
+/* Compare and exchange.
+   For all "bool" routines, we return FALSE if exchange succesful.  */
+
+# define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				  model, __ATOMIC_RELAXED);		\
+  })
+
+# define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				  model, __ATOMIC_RELAXED);		\
+  })
+
+# define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				  model, __ATOMIC_RELAXED);		\
+  })
+
+#  define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				  model, __ATOMIC_RELAXED);		\
+  })
+
+# define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				 model, __ATOMIC_RELAXED);		\
+    __oldval;								\
+  })
+
+# define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				 model, __ATOMIC_RELAXED);		\
+    __oldval;								\
+  })
+
+# define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				 model, __ATOMIC_RELAXED);		\
+    __oldval;								\
+  })
+
+# define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \
+  ({									\
+    typeof (*mem) __oldval = (oldval);					\
+    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,	\
+				 model, __ATOMIC_RELAXED);		\
+    __oldval;								\
+  })
+
+/* Atomic compare and exchange.  */
+
+# define atomic_compare_and_exchange_bool_acq(mem, new, old)	\
+  __atomic_bool_bysize (__arch_compare_and_exchange_bool, int,	\
+			mem, new, old, __ATOMIC_ACQUIRE)
+
+# define atomic_compare_and_exchange_val_acq(mem, new, old)	\
+  __atomic_val_bysize (__arch_compare_and_exchange_val, int,	\
+		       mem, new, old, __ATOMIC_ACQUIRE)
+
+# define atomic_compare_and_exchange_val_rel(mem, new, old)	 \
+  __atomic_val_bysize (__arch_compare_and_exchange_val, int,    \
+                       mem, new, old, __ATOMIC_RELEASE)
+
+/* Atomic exchange (without compare).  */
+
+# define __arch_exchange_8_int(mem, newval, model)	\
+  __atomic_exchange_n (mem, newval, model)
+
+# define __arch_exchange_16_int(mem, newval, model)	\
+  __atomic_exchange_n (mem, newval, model)
+
+# define __arch_exchange_32_int(mem, newval, model)	\
+  __atomic_exchange_n (mem, newval, model)
+
+#  define __arch_exchange_64_int(mem, newval, model)	\
+  __atomic_exchange_n (mem, newval, model)
+
+# define atomic_exchange_acq(mem, value)				\
+  __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_ACQUIRE)
+
+# define atomic_exchange_rel(mem, value)				\
+  __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_RELEASE)
+
+/* Atomically add value and return the previous (unincremented) value.  */
+
+# define __arch_exchange_and_add_8_int(mem, value, model)	\
+  __atomic_fetch_add (mem, value, model)
+
+# define __arch_exchange_and_add_16_int(mem, value, model)	\
+  __atomic_fetch_add (mem, value, model)
+
+# define __arch_exchange_and_add_32_int(mem, value, model)	\
+  __atomic_fetch_add (mem, value, model)
+
+#  define __arch_exchange_and_add_64_int(mem, value, model)	\
+  __atomic_fetch_add (mem, value, model)
+
+# define atomic_exchange_and_add_acq(mem, value)			\
+  __atomic_val_bysize (__arch_exchange_and_add, int, mem, value,	\
+		       __ATOMIC_ACQUIRE)
+
+# define atomic_exchange_and_add_rel(mem, value)			\
+  __atomic_val_bysize (__arch_exchange_and_add, int, mem, value,	\
+		       __ATOMIC_RELEASE)
+
+/* Miscellaneous.  */
+
+# define asm_amo(which, ordering, mem, value) ({ 		\
+  __atomic_check_size (mem);					\
+  typeof (*mem) __tmp; 						\
+  if (sizeof (__tmp) == 4)					\
+    asm volatile (which ".w" ordering "\t%0, %z2, %1"		\
+		  : "=r" (__tmp), "+A" (* (mem))		\
+		  : "rJ" (value));				\
+  else if (sizeof (__tmp) == 8)					\
+    asm volatile (which ".d" ordering "\t%0, %z2, %1"		\
+		  : "=r" (__tmp), "+A" (* (mem))		\
+		  : "rJ" (value));				\
+  else								\
+    abort ();							\
+  __tmp; })
+
+# define atomic_max(mem, value) asm_amo ("amomaxu", ".aq", mem, value)
+# define atomic_min(mem, value) asm_amo ("amominu", ".aq", mem, value)
+
+# define atomic_bit_test_set(mem, bit)                   \
+  ({ typeof (*mem) __mask = (typeof (*mem))1 << (bit);    \
+     asm_amo ("amoor", ".aq", mem, __mask) & __mask; })
+
+# define catomic_exchange_and_add(mem, value)		\
+  atomic_exchange_and_add (mem, value)
+# define catomic_max(mem, value) atomic_max (mem, value)
+
+#else /* __riscv_atomic */
+# error "ISAs that do not subsume the A extension are not supported"
+#endif /* !__riscv_atomic */
+
+#endif /* bits/atomic.h */
-- 
2.13.6

[PATCH 12/17] RISC-V: Linux Syscall Interface

[Palmer Dabbelt]

Contains the Linux system call interface, as well as the definitions of
a handful of system calls.
---
 sysdeps/riscv/nptl/nptl-sysdep.S               |   2 +
 sysdeps/unix/sysv/linux/riscv/arch-fork.h      |  26 ++
 sysdeps/unix/sysv/linux/riscv/clone.S          |  86 +++++++
 sysdeps/unix/sysv/linux/riscv/profil-counter.h |  31 +++
 sysdeps/unix/sysv/linux/riscv/pt-vfork.S       |   1 +
 sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c   |  70 ++++++
 sysdeps/unix/sysv/linux/riscv/syscall.c        |  35 +++
 sysdeps/unix/sysv/linux/riscv/sysdep.S         |  51 ++++
 sysdeps/unix/sysv/linux/riscv/sysdep.h         | 322 +++++++++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/vfork.S          |  44 ++++
 10 files changed, 668 insertions(+)
 create mode 100644 sysdeps/riscv/nptl/nptl-sysdep.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/arch-fork.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/clone.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/profil-counter.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/pt-vfork.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/syscall.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sysdep.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sysdep.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/vfork.S

diff --git a/sysdeps/riscv/nptl/nptl-sysdep.S b/sysdeps/riscv/nptl/nptl-sysdep.S
new file mode 100644
index 000000000000..3f5c2a364afd
--- /dev/null
+++ b/sysdeps/riscv/nptl/nptl-sysdep.S
@@ -0,0 +1,2 @@
+/* Pull in __syscall_error.  */
+#include <sysdep.S>
diff --git a/sysdeps/unix/sysv/linux/riscv/arch-fork.h b/sysdeps/unix/sysv/linux/riscv/arch-fork.h
new file mode 100644
index 000000000000..f6f5d733439b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/arch-fork.h
@@ -0,0 +1,26 @@
+/* Internal definitions for thread-friendly fork implementation.  Linux/RISC-V.
+   Copyright (C) 2002-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sched.h>
+#include <sysdep.h>
+#include <tls.h>
+
+#define ARCH_FORK() \
+  INLINE_SYSCALL (clone, 5,						      \
+		  CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, 0,     \
+		  NULL, NULL, &THREAD_SELF->tid)
diff --git a/sysdeps/unix/sysv/linux/riscv/clone.S b/sysdeps/unix/sysv/linux/riscv/clone.S
new file mode 100644
index 000000000000..392af72b55da
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/clone.S
@@ -0,0 +1,86 @@
+/* Wrapper around clone system call.  RISC-V version.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* clone() is even more special than fork() as it mucks with stacks
+   and invokes a function in the right context after its all over.  */
+
+#include <sys/asm.h>
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <tls.h>
+#include "tcb-offsets.h"
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
+	     void *parent_tidptr, void *tls, void *child_tidptr) */
+
+	.text
+LEAF (__clone)
+
+	/* Sanity check arguments.  */
+	beqz		a0,L (invalid)	/* No NULL function pointers.  */
+	beqz		a1,L (invalid)	/* No NULL stack pointers.  */
+
+	addi		a1,a1,-16	/* Reserve argument save space.  */
+	REG_S		a0,0(a1)	/* Save function pointer.  */
+	REG_S		a3,SZREG(a1)	/* Save argument pointer.  */
+
+	/* The syscall expects the args to be in different slots.  */
+	mv		a0,a2
+	mv		a2,a4
+	mv		a3,a5
+	mv		a4,a6
+
+	/* Do the system call.  */
+	li		a7,__NR_clone
+	scall
+
+	bltz		a0,L (error)
+	beqz		a0,L (thread_start)
+
+	/* Successful return from the parent.  */
+	ret
+
+L (invalid):
+	li		a0, -EINVAL
+	/* Something bad happened -- no child created.  */
+L (error):
+	j		__syscall_error
+	END (__clone)
+
+/* Load up the arguments to the function.  Put this block of code in
+   its own function so that we can terminate the stack trace with our
+   debug info.  */
+
+ENTRY (__thread_start)
+L (thread_start):
+	/* Restore the arg for user's function.  */
+	REG_L		a1,0(sp)	/* Function pointer.  */
+	REG_L		a0,SZREG(sp)	/* Argument pointer.  */
+
+	/* Call the user's function.  */
+	jalr		a1
+
+	/* Call exit with the function's return value.  */
+	li		a7, __NR_exit
+	scall
+
+	END (__thread_start)
+
+libc_hidden_def (__clone)
+weak_alias (__clone, clone)
diff --git a/sysdeps/unix/sysv/linux/riscv/profil-counter.h b/sysdeps/unix/sysv/linux/riscv/profil-counter.h
new file mode 100644
index 000000000000..748019ee1b9d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/profil-counter.h
@@ -0,0 +1,31 @@
+/* Low-level statistical profiling support function.  Linux/RISC-V version.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <signal.h>
+#include <sigcontextinfo.h>
+
+static void
+__profil_counter (int signo, const SIGCONTEXT scp)
+{
+  profil_count ((void *) GET_PC (scp));
+
+  /* This is a hack to prevent the compiler from implementing the
+     above function call as a sibcall.  The sibcall would overwrite
+     the signal context.  */
+  asm volatile ("");
+}
diff --git a/sysdeps/unix/sysv/linux/riscv/pt-vfork.S b/sysdeps/unix/sysv/linux/riscv/pt-vfork.S
new file mode 100644
index 000000000000..1cc893170070
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/pt-vfork.S
@@ -0,0 +1 @@
+/* Not needed.  */
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
new file mode 100644
index 000000000000..8a17c13cbeba
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1994-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <sysdep.h>
+
+/* lockf is a simplified interface to fcntl's locking facilities.  */
+
+int
+lockf64 (int fd, int cmd, off64_t len64)
+{
+  struct flock64 fl64;
+  int cmd64;
+  int result;
+
+  memset ((char *) &fl64, '\0', sizeof (fl64));
+  fl64.l_whence = SEEK_CUR;
+  fl64.l_start = 0;
+  fl64.l_len = len64;
+
+  switch (cmd)
+    {
+    case F_TEST:
+      /* Test the lock: return 0 if FD is unlocked or locked by this process;
+	 return -1, set errno to EACCES, if another process holds the lock.  */
+      fl64.l_type = F_RDLCK;
+      INTERNAL_SYSCALL_DECL (err);
+      result = INTERNAL_SYSCALL (fcntl64, err, 3, fd, F_GETLK64, &fl64);
+      if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
+	return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
+									  err));
+      if (fl64.l_type == F_UNLCK || fl64.l_pid == __getpid ())
+        return 0;
+      return INLINE_SYSCALL_ERROR_RETURN_VALUE (EACCES);
+    case F_ULOCK:
+      fl64.l_type = F_UNLCK;
+      cmd64 = F_SETLK64;
+      break;
+    case F_LOCK:
+      fl64.l_type = F_WRLCK;
+      cmd64 = F_SETLKW64;
+      break;
+    case F_TLOCK:
+      fl64.l_type = F_WRLCK;
+      cmd64 = F_SETLK64;
+      break;
+
+    default:
+      return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+    }
+  return INLINE_SYSCALL (fcntl64, 3, fd, cmd64, &fl64);
+}
diff --git a/sysdeps/unix/sysv/linux/riscv/syscall.c b/sysdeps/unix/sysv/linux/riscv/syscall.c
new file mode 100644
index 000000000000..6589dde385e0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/syscall.c
@@ -0,0 +1,35 @@
+/* system call interface.  Linux/RISC-V version.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+long int
+syscall (long int syscall_number, long int arg1, long int arg2, long int arg3,
+	 long int arg4, long int arg5, long int arg6, long int arg7)
+{
+  long int ret;
+  INTERNAL_SYSCALL_DECL (err);
+
+  ret = INTERNAL_SYSCALL_NCS (syscall_number, err, 7, arg1, arg2, arg3, arg4,
+			      arg5, arg6, arg7);
+
+  if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+    return __syscall_error (ret);
+
+  return ret;
+}
diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep.S b/sysdeps/unix/sysv/linux/riscv/sysdep.S
new file mode 100644
index 000000000000..0d9c0b5bd907
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep.S
@@ -0,0 +1,51 @@
+/* syscall error handlers
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+#if IS_IN (libc)
+# define errno __libc_errno
+#endif
+
+ENTRY (__syscall_error)
+	mv t0, ra
+	/* Fall through to __syscall_set_errno.  */
+END (__syscall_error)
+
+/* Non-standard calling convention: argument in a0, return address in t0,
+   and clobber only t1.  */
+ENTRY (__syscall_set_errno)
+	/* We got here because a0 < 0, but only codes in the range [-4095, -1]
+	  represent errors.  Otherwise, just return the result normally.  */
+	li t1, -4096
+	bleu a0, t1, 1f
+	neg a0, a0
+#if RTLD_PRIVATE_ERRNO
+	sw a0, rtld_errno, t1
+#elif defined(__PIC__)
+	la.tls.ie t1, errno
+	add t1, t1, tp
+	sw a0, 0(t1)
+#else
+	lui t1, %tprel_hi(errno)
+	add t1, t1, tp, %tprel_add(errno)
+	sw a0, %tprel_lo(errno)(t1)
+#endif
+	li a0, -1
+1:	jr t0
+END (__syscall_set_errno)
diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep.h b/sysdeps/unix/sysv/linux/riscv/sysdep.h
new file mode 100644
index 000000000000..3fc19ebc5185
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep.h
@@ -0,0 +1,322 @@
+/* Assembly macros for RISC-V.
+   Copyright (C) 2011-2018
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LINUX_RISCV_SYSDEP_H
+#define _LINUX_RISCV_SYSDEP_H 1
+
+#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
+#include <tls.h>
+
+#ifdef __ASSEMBLER__
+
+# include <sys/asm.h>
+
+# define ENTRY(name) LEAF(name)
+
+# define L(label) .L ## label
+
+/* Performs a system call, handling errors by setting errno.  Linux indicates
+   errors by setting a0 to a value between -1 and -4095.  */
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)			\
+  .text;							\
+  .align 2;							\
+  ENTRY (name);							\
+  li a7, SYS_ify (syscall_name);				\
+  scall;							\
+  li a7, -4096;							\
+  bgtu a0, a7, .Lsyscall_error ## name;
+
+# undef PSEUDO_END
+# define PSEUDO_END(sym) 					\
+  SYSCALL_ERROR_HANDLER (sym)					\
+  ret;								\
+  END (sym)
+
+# if !IS_IN (libc)
+#  if RTLD_PRIVATE_ERRNO
+#   define SYSCALL_ERROR_HANDLER(name)				\
+.Lsyscall_error ## name:					\
+	li t1, -4096;						\
+        sw a0, rtld_errno, t1;					\
+        li a0, -1;
+#  elif defined (__PIC__)
+#   define SYSCALL_ERROR_HANDLER(name)				\
+.Lsyscall_error ## name:					\
+        la.tls.ie t1, errno;					\
+	add t1, t1, tp;						\
+	sw a0, 0(t1);						\
+        li a0, -1;
+#  else
+#   define SYSCALL_ERROR_HANDLER(name)				\
+.Lsyscall_error ## name:					\
+        lui t1, %tprel_hi(errno);				\
+        add t1, t1, tp, %tprel_add(errno);			\
+        sw a0, %tprel_lo(errno)(t1);				\
+        li a0, -1;
+#  endif
+# else
+#  define SYSCALL_ERROR_HANDLER(name)				\
+.Lsyscall_error ## name:					\
+        j       __syscall_error;
+# endif
+
+/* Performs a system call, not setting errno.  */
+# undef PSEUDO_NEORRNO
+# define PSEUDO_NOERRNO(name, syscall_name, args)	\
+  .align 2;						\
+  ENTRY (name);						\
+  li a7, SYS_ify (syscall_name);			\
+  scall;
+
+# undef PSEUDO_END_NOERRNO
+# define PSEUDO_END_NOERRNO(name)			\
+  END (name)
+
+# undef ret_NOERRNO
+# define ret_NOERRNO ret
+
+/* Perfroms a system call, returning the error code.  */
+# undef PSEUDO_ERRVAL
+# define PSEUDO_ERRVAL(name, syscall_name, args) 	\
+  PSEUDO_NOERRNO (name, syscall_name, args)		\
+  neg a0, a0;
+
+# undef PSEUDO_END_ERRVAL
+# define PSEUDO_END_ERRVAL(name)			\
+  END (name)
+
+# undef ret_ERRVAL
+# define ret_ERRVAL ret
+
+#endif /* __ASSEMBLER__ */
+
+/* In order to get __set_errno() definition in INLINE_SYSCALL.  */
+#ifndef __ASSEMBLER__
+# include <errno.h>
+#endif
+
+#include <sysdeps/unix/sysdep.h>
+
+#undef SYS_ify
+#define SYS_ify(syscall_name)	__NR_##syscall_name
+
+#ifndef __ASSEMBLER__
+
+/* List of system calls which are supported as vsyscalls.  */
+# define HAVE_CLOCK_GETRES_VSYSCALL	1
+# define HAVE_CLOCK_GETTIME_VSYSCALL	1
+# define HAVE_GETTIMEOFDAY_VSYSCALL	1
+# define HAVE_GETCPU_VSYSCALL		1
+
+/* Define a macro which expands into the inline wrapper code for a system
+   call.  */
+# undef INLINE_SYSCALL
+# define INLINE_SYSCALL(name, nr, args...)				\
+  ({ INTERNAL_SYSCALL_DECL (err);					\
+     long int __sys_result = INTERNAL_SYSCALL (name, err, nr, args);	\
+     if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (__sys_result, )))  \
+       {								\
+         __set_errno (INTERNAL_SYSCALL_ERRNO (__sys_result, ));		\
+	 __sys_result = (unsigned long) -1;				\
+       }								\
+     __sys_result; })
+
+# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+        ((unsigned long int) (val) > -4096UL)
+
+# define INTERNAL_SYSCALL_ERRNO(val, err)     (-val)
+
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+	internal_syscall##nr (SYS_ify (name), err, args)
+
+# define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
+	internal_syscall##nr (number, err, args)
+
+# define internal_syscall0(number, err, dummy...)			\
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0");				\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "=r" (__a0)							\
+	: "r" (__a7)							\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall1(number, err, arg0)				\
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7)							\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall2(number, err, arg0, arg1)	    		\
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r" (__a1)					\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall3(number, err, arg0, arg1, arg2)      		\
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	register long int __a2 asm ("a2") = (long int) (arg2);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r" (__a1), "r" (__a2)				\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall4(number, err, arg0, arg1, arg2, arg3)	  \
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	register long int __a2 asm ("a2") = (long int) (arg2);		\
+	register long int __a3 asm ("a3") = (long int) (arg3);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3)		\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall5(number, err, arg0, arg1, arg2, arg3, arg4)   \
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	register long int __a2 asm ("a2") = (long int) (arg2);		\
+	register long int __a3 asm ("a3") = (long int) (arg3);		\
+	register long int __a4 asm ("a4") = (long int) (arg4);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r" (__a4)	\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall6(number, err, arg0, arg1, arg2, arg3, arg4, arg5) \
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	register long int __a2 asm ("a2") = (long int) (arg2);		\
+	register long int __a3 asm ("a3") = (long int) (arg3);		\
+	register long int __a4 asm ("a4") = (long int) (arg4);		\
+	register long int __a5 asm ("a5") = (long int) (arg5);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3),		\
+	  "r" (__a4), "r" (__a5)					\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define internal_syscall7(number, err, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \
+({ 									\
+	long int _sys_result;						\
+									\
+	{								\
+	register long int __a7 asm ("a7") = number;			\
+	register long int __a0 asm ("a0") = (long int) (arg0);		\
+	register long int __a1 asm ("a1") = (long int) (arg1);		\
+	register long int __a2 asm ("a2") = (long int) (arg2);		\
+	register long int __a3 asm ("a3") = (long int) (arg3);		\
+	register long int __a4 asm ("a4") = (long int) (arg4);		\
+	register long int __a5 asm ("a5") = (long int) (arg5);		\
+	register long int __a6 asm ("a6") = (long int) (arg6);		\
+	__asm__ volatile ( 						\
+	"scall\n\t" 							\
+	: "+r" (__a0)							\
+	: "r" (__a7), "r" (__a1), "r" (__a2), "r" (__a3),		\
+	  "r" (__a4), "r" (__a5), "r" (__a6)				\
+	: __SYSCALL_CLOBBERS); 						\
+	_sys_result = __a0;						\
+	}								\
+	_sys_result;							\
+})
+
+# define __SYSCALL_CLOBBERS "memory"
+
+extern long int __syscall_error (long int neg_errno);
+
+#endif /* ! __ASSEMBLER__ */
+
+/* Pointer mangling is not supported.  */
+#define PTR_MANGLE(var) (void) (var)
+#define PTR_DEMANGLE(var) (void) (var)
+
+#endif /* linux/riscv/sysdep.h */
diff --git a/sysdeps/unix/sysv/linux/riscv/vfork.S b/sysdeps/unix/sysv/linux/riscv/vfork.S
new file mode 100644
index 000000000000..6c53e93a928d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/vfork.S
@@ -0,0 +1,44 @@
+/* vfork for Linux, RISC-V version.
+   Copyright (C) 2005-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* vfork() is just a special case of clone().  */
+
+#include <sys/asm.h>
+#include <sysdep.h>
+#define __ASSEMBLY__
+#include <linux/sched.h>
+#include <asm/signal.h>
+
+	.text
+LEAF (__libc_vfork)
+
+	li	a0, (CLONE_VFORK | CLONE_VM | SIGCHLD)
+	mv	a1, sp
+
+	li	a7, __NR_clone
+	scall
+
+	bltz	a0, 1f
+	ret
+
+1:	j		__syscall_error
+END (__libc_vfork)
+
+weak_alias (__libc_vfork, vfork)
+strong_alias (__libc_vfork, __vfork)
+libc_hidden_def (__vfork)
-- 
2.13.6

[PATCH 13/17] RISC-V: Linux ABI

[Palmer Dabbelt]

Linux-specific code that is required for maintaining ABI compatibility.
This doesn't contain the actual system call interface, that is split out
in order to avoid having a patch that's too big.
---
 sysdeps/riscv/nptl/pthread-offsets.h               |  24 ++++
 sysdeps/riscv/nptl/pthreaddef.h                    |  32 ++++++
 sysdeps/unix/sysv/linux/riscv/bits/fcntl.h         |  62 ++++++++++
 sysdeps/unix/sysv/linux/riscv/bits/mman.h          |  36 ++++++
 sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h    |  32 ++++++
 sysdeps/unix/sysv/linux/riscv/dl-cache.h           |  32 ++++++
 sysdeps/unix/sysv/linux/riscv/flush-icache.c       |  71 ++++++++++++
 sysdeps/unix/sysv/linux/riscv/getcontext.S         |  77 +++++++++++++
 sysdeps/unix/sysv/linux/riscv/init-first.c         |  58 ++++++++++
 sysdeps/unix/sysv/linux/riscv/libc-vdso.h          |  38 ++++++
 sysdeps/unix/sysv/linux/riscv/makecontext.c        |  78 +++++++++++++
 sysdeps/unix/sysv/linux/riscv/readelflib.c         | 100 ++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/register-dump.h      |  63 ++++++++++
 .../unix/sysv/linux/riscv/rv32/jmp_buf-macros.h    |  53 +++++++++
 .../unix/sysv/linux/riscv/rv64/jmp_buf-macros.h    |  53 +++++++++
 sysdeps/unix/sysv/linux/riscv/setcontext.S         | 114 ++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h     |  28 +++++
 sysdeps/unix/sysv/linux/riscv/swapcontext.S        | 125 ++++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/sys/cachectl.h       |  32 ++++++
 sysdeps/unix/sysv/linux/riscv/sys/procfs.h         | 114 ++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/sys/ucontext.h       | 110 ++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/sys/user.h           |  23 ++++
 sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h      | 128 +++++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/ucontext-macros.h    |  49 ++++++++
 sysdeps/unix/sysv/linux/riscv/ucontext_i.sym       |  31 +++++
 25 files changed, 1563 insertions(+)
 create mode 100644 sysdeps/riscv/nptl/pthread-offsets.h
 create mode 100644 sysdeps/riscv/nptl/pthreaddef.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/mman.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/dl-cache.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/flush-icache.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/getcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/init-first.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libc-vdso.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/makecontext.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/readelflib.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/register-dump.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/jmp_buf-macros.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/jmp_buf-macros.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/setcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/swapcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sys/cachectl.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sys/procfs.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sys/user.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/ucontext-macros.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/ucontext_i.sym

diff --git a/sysdeps/riscv/nptl/pthread-offsets.h b/sysdeps/riscv/nptl/pthread-offsets.h
new file mode 100644
index 000000000000..5f7031834f42
--- /dev/null
+++ b/sysdeps/riscv/nptl/pthread-offsets.h
@@ -0,0 +1,24 @@
+/* RISC-V pthread offsets
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define __PTHREAD_MUTEX_NUSERS_OFFSET   12
+#define __PTHREAD_MUTEX_KIND_OFFSET     16
+#define __PTHREAD_MUTEX_SPINS_OFFSET    20
+#define __PTHREAD_MUTEX_ELISION_OFFSET  22
+#define __PTHREAD_MUTEX_LIST_OFFSET     24
diff --git a/sysdeps/riscv/nptl/pthreaddef.h b/sysdeps/riscv/nptl/pthreaddef.h
new file mode 100644
index 000000000000..442422aefb63
--- /dev/null
+++ b/sysdeps/riscv/nptl/pthreaddef.h
@@ -0,0 +1,32 @@
+/* pthread machine parameter definitions,  RISC-V version.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Default stack size.  */
+#define ARCH_STACK_DEFAULT_SIZE	(2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning.  */
+#define STACK_ALIGN		16
+
+/* Minimal stack size after allocating thread descriptor and guard size.  */
+#define MINIMAL_REST_STACK	2048
+
+/* Alignment requirement for TCB.  */
+#define TCB_ALIGNMENT		16
+
+/* Location of current stack frame.  */
+#define CURRENT_STACK_FRAME	__builtin_frame_address (0)
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h b/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
new file mode 100644
index 000000000000..6bea085c709c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/fcntl.h
@@ -0,0 +1,62 @@
+/* O_*, F_*, FD_* bit values for Linux / RISC-V.
+   Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_FCNTL_H
+# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+/* In 64-bit ISA files are always with 64bit off_t and F_*LK64 are the same as
+   non-64-bit versions.  It will need to be revised for 128-bit.  */
+#if __WORDSIZE == 64
+# define __O_LARGEFILE	0
+
+# define F_GETLK64	5	/* Get record locking info.  */
+# define F_SETLK64	6	/* Set record locking info (non-blocking).  */
+# define F_SETLKW64	7	/* Set record locking info (blocking).	*/
+#endif
+
+struct flock
+  {
+    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+#if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
+    __off_t l_start;    /* Offset where the lock begins.  */
+    __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
+#else
+    __off64_t l_start;  /* Offset where the lock begins.  */
+    __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
+#endif
+    __pid_t l_pid;      /* Process holding the lock.  */
+  };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+  {
+    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
+    __off64_t l_start;  /* Offset where the lock begins.  */
+    __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
+    __pid_t l_pid;      /* Process holding the lock.  */
+  };
+#endif
+
+/* Include generic Linux declarations.  */
+#include <bits/fcntl-linux.h>
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/mman.h b/sysdeps/unix/sysv/linux/riscv/bits/mman.h
new file mode 100644
index 000000000000..0e64f1eea739
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/mman.h
@@ -0,0 +1,36 @@
+/* Definitions for POSIX memory map interface.  Linux/RISC-V version.
+   Copyright (C) 1997-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+#ifdef __USE_MISC
+# define MAP_GROWSDOWN	0x00100		/* Stack-like segment.  */
+# define MAP_DENYWRITE	0x00800		/* ETXTBSY.  */
+# define MAP_EXECUTABLE	0x01000		/* Mark it as an executable.  */
+# define MAP_LOCKED	0x02000		/* Lock the mapping.  */
+# define MAP_NORESERVE	0x04000		/* Don't check for reservations.  */
+# define MAP_POPULATE	0x08000		/* Populate (prefault) pagetables.  */
+# define MAP_NONBLOCK	0x10000		/* Do not block on IO.  */
+# define MAP_STACK	0x20000		/* Allocation is for a stack.  */
+# define MAP_HUGETLB	0x40000		/* Create huge page mapping.  */
+#endif
+
+/* Include generic Linux declarations.  */
+#include <bits/mman-linux.h>
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h b/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h
new file mode 100644
index 000000000000..9b896a626277
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h
@@ -0,0 +1,32 @@
+/* Machine-dependent signal context structure for Linux.  RISC-V version.
+   Copyright (C) 1996-2018 Free Software
+   Foundation, Inc.  This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_SIGCONTEXT_H
+#define _BITS_SIGCONTEXT_H 1
+
+#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
+# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
+#endif
+
+struct sigcontext {
+  /* gregs[0] holds the program counter.  */
+  unsigned long int gregs[32];
+  unsigned long long int fpregs[66] __attribute__ ((__aligned__ (16)));
+};
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/dl-cache.h b/sysdeps/unix/sysv/linux/riscv/dl-cache.h
new file mode 100644
index 000000000000..a42be106e21d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/dl-cache.h
@@ -0,0 +1,32 @@
+/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
+   Copyright (C) 2003-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ldconfig.h>
+
+/* For now we only support the natural XLEN ABI length on all targets, so the
+   only bits that need to go into ld.so.cache are the FLEG ABI length.  */
+#if defined __riscv_float_abi_double
+# define _DL_CACHE_DEFAULT_ID    (FLAG_RISCV_FLOAT_ABI_DOUBLE | FLAG_ELF_LIBC6)
+#else
+# define _DL_CACHE_DEFAULT_ID    (FLAG_RISCV_FLOAT_ABI_SOFT | FLAG_ELF_LIBC6)
+#endif
+
+#define _dl_cache_check_flags(flags)                    \
+  ((flags) == _DL_CACHE_DEFAULT_ID)
+
+#include_next <dl-cache.h>
diff --git a/sysdeps/unix/sysv/linux/riscv/flush-icache.c b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
new file mode 100644
index 000000000000..a66fa3cafb2d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
@@ -0,0 +1,71 @@
+/* RISC-V instruction cache flushing VDSO calls
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <dl-vdso.h>
+#include <stdlib.h>
+#include <atomic.h>
+#include <sys/cachectl.h>
+#include <asm/syscalls.h>
+
+typedef int (*func_type) (void *, void *, unsigned long int);
+
+static int __riscv_flush_icache_syscall (void *start, void *end,
+					 unsigned long int flags)
+{
+	return INLINE_SYSCALL (riscv_flush_icache, 3, start, end, flags);
+}
+
+static func_type
+__lookup_riscv_flush_icache (void)
+{
+  PREPARE_VERSION_KNOWN (linux_version, LINUX_4_15);
+
+  func_type func = _dl_vdso_vsym ("__vdso_flush_icache", &linux_version);
+
+  /* The vDSO is required, as there is no exposed system call equivalent.  */
+  if (!func)
+    func = &__riscv_flush_icache_syscall;
+
+  return func;
+}
+
+#ifdef SHARED
+
+# define INIT_ARCH()
+libc_ifunc (__riscv_flush_icache, __lookup_riscv_flush_icache ())
+
+#else
+
+int
+__riscv_flush_icache (void *start, void *end, unsigned long int flags)
+{
+  static volatile func_type cached_func;
+
+  func_type func = atomic_load_relaxed (&cached_func);
+
+  if (!func)
+    {
+      func = __lookup_riscv_flush_icache ();
+      atomic_store_relaxed (&cached_func, func);
+    }
+
+  return func (start, end, flags);
+}
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/getcontext.S b/sysdeps/unix/sysv/linux/riscv/getcontext.S
new file mode 100644
index 000000000000..bde350f721a7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/getcontext.S
@@ -0,0 +1,77 @@
+/* Save current context.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "ucontext-macros.h"
+
+/* int getcontext (ucontext_t *ucp) */
+
+	.text
+LEAF (__getcontext)
+	SAVE_INT_REG (ra,   0, a0)
+	SAVE_INT_REG (ra,   1, a0)
+	SAVE_INT_REG (sp,   2, a0)
+	SAVE_INT_REG (s0,   8, a0)
+	SAVE_INT_REG (s1,   9, a0)
+	SAVE_INT_REG (x0,  10, a0)	/* return 0 by overwriting a0.  */
+	SAVE_INT_REG (s2,  18, a0)
+	SAVE_INT_REG (s3,  19, a0)
+	SAVE_INT_REG (s4,  20, a0)
+	SAVE_INT_REG (s5,  21, a0)
+	SAVE_INT_REG (s6,  22, a0)
+	SAVE_INT_REG (s7,  23, a0)
+	SAVE_INT_REG (s8,  24, a0)
+	SAVE_INT_REG (s9,  25, a0)
+	SAVE_INT_REG (s10, 26, a0)
+	SAVE_INT_REG (s11, 27, a0)
+
+#ifndef __riscv_float_abi_soft
+	frsr	a1
+
+	SAVE_FP_REG (fs0,   8, a0)
+	SAVE_FP_REG (fs1,   9, a0)
+	SAVE_FP_REG (fs2,  18, a0)
+	SAVE_FP_REG (fs3,  19, a0)
+	SAVE_FP_REG (fs4,  20, a0)
+	SAVE_FP_REG (fs5,  21, a0)
+	SAVE_FP_REG (fs6,  22, a0)
+	SAVE_FP_REG (fs7,  23, a0)
+	SAVE_FP_REG (fs8,  24, a0)
+	SAVE_FP_REG (fs9,  25, a0)
+	SAVE_FP_REG (fs10, 26, a0)
+	SAVE_FP_REG (fs11, 27, a0)
+
+	sw	a1, MCONTEXT_FSR(a0)
+#endif /* __riscv_float_abi_soft */
+
+/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
+	li	a3, _NSIG8
+	add     a2, a0, UCONTEXT_SIGMASK
+	mv	a1, zero
+	li	a0, SIG_BLOCK
+
+	li	a7, SYS_ify (rt_sigprocmask)
+	scall
+	bltz	a0, 99f
+
+	ret
+
+99:	j	__syscall_error
+
+PSEUDO_END (__getcontext)
+
+weak_alias (__getcontext, getcontext)
diff --git a/sysdeps/unix/sysv/linux/riscv/init-first.c b/sysdeps/unix/sysv/linux/riscv/init-first.c
new file mode 100644
index 000000000000..56abe51d96cb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/init-first.c
@@ -0,0 +1,58 @@
+/* RISC-V VDSO initialization
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef SHARED
+# include <dl-vdso.h>
+# include <libc-vdso.h>
+
+long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
+    attribute_hidden;
+long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
+    attribute_hidden;
+long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
+    attribute_hidden;
+long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
+    attribute_hidden;
+
+static inline void
+_libc_vdso_platform_setup (void)
+{
+  PREPARE_VERSION_KNOWN (linux_version, LINUX_4_15);
+
+  void *p = _dl_vdso_vsym ("__vdso_getcpu", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (getcpu) = p;
+
+  p = _dl_vdso_vsym ("__vdso_gettimeofday", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (gettimeofday) = p;
+
+  p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (clock_gettime) = p;
+
+  p = _dl_vdso_vsym ("__vdso_clock_getres", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (clock_getres) = p;
+}
+
+# define VDSO_SETUP _libc_vdso_platform_setup
+#endif
+
+#include <csu/init-first.c>
diff --git a/sysdeps/unix/sysv/linux/riscv/libc-vdso.h b/sysdeps/unix/sysv/linux/riscv/libc-vdso.h
new file mode 100644
index 000000000000..1d44b34e025f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libc-vdso.h
@@ -0,0 +1,38 @@
+/* RISC-V VDSO function declarations
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC_VDSO_H
+#define _LIBC_VDSO_H
+
+#ifdef SHARED
+
+# include <sysdep-vdso.h>
+
+extern long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
+    attribute_hidden;
+extern long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
+    attribute_hidden;
+extern long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
+    attribute_hidden;
+extern long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
+    attribute_hidden;
+
+#endif
+
+#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/riscv/makecontext.c b/sysdeps/unix/sysv/linux/riscv/makecontext.c
new file mode 100644
index 000000000000..b8054a29b02f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/makecontext.c
@@ -0,0 +1,78 @@
+/* Create new context.  RISC-V version.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+#include <sys/ucontext.h>
+#include <stdarg.h>
+#include <assert.h>
+
+void
+__makecontext (ucontext_t *ucp, void (*func) (void), int argc,
+	       long int a0, long int a1, long int a2, long int a3, long int a4,
+	       ...)
+{
+  extern void __start_context (void) attribute_hidden;
+  long int i, sp;
+
+  _Static_assert (REG_NARGS == 8, "__makecontext assumes 8 argument registers");
+
+  /* Set up the stack.  */
+  sp = ((long int) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ALMASK;
+
+  /* Set up the register context.
+     ra = s0 = 0, terminating the stack for backtracing purposes.
+     s1 = the function we must call.
+     s2 = the subsequent context to run.  */
+  ucp->uc_mcontext.__gregs[REG_RA] = 0;
+  ucp->uc_mcontext.__gregs[REG_S0] = 0;
+  ucp->uc_mcontext.__gregs[REG_S1] = (long int) func;
+  ucp->uc_mcontext.__gregs[REG_S2] = (long int) ucp->uc_link;
+  ucp->uc_mcontext.__gregs[REG_SP] = sp;
+  ucp->uc_mcontext.__gregs[REG_PC] = (long int) &__start_context;
+
+  /* Put args in a0-a7, then put any remaining args on the stack.  */
+  ucp->uc_mcontext.__gregs[REG_A0 + 0] = a0;
+  ucp->uc_mcontext.__gregs[REG_A0 + 1] = a1;
+  ucp->uc_mcontext.__gregs[REG_A0 + 2] = a2;
+  ucp->uc_mcontext.__gregs[REG_A0 + 3] = a3;
+  ucp->uc_mcontext.__gregs[REG_A0 + 4] = a4;
+
+  if (__glibc_unlikely (argc > 5))
+    {
+      va_list vl;
+      va_start (vl, a4);
+
+      long reg_args = argc < REG_NARGS ? argc : REG_NARGS;
+      for (i = 5; i < reg_args; i++)
+        ucp->uc_mcontext.__gregs[REG_A0 + i] = va_arg (vl, long);
+
+      long int stack_args = argc - reg_args;
+      if (stack_args > 0)
+	{
+	  sp = (sp - stack_args * sizeof (long int)) & ALMASK;
+	  ucp->uc_mcontext.__gregs[REG_SP] = sp;
+	  for (i = 0; i < stack_args; i++)
+	    ((long int *) sp)[i] = va_arg (vl, long int);
+	}
+
+      va_end (vl);
+    }
+}
+
+weak_alias (__makecontext, makecontext)
diff --git a/sysdeps/unix/sysv/linux/riscv/readelflib.c b/sysdeps/unix/sysv/linux/riscv/readelflib.c
new file mode 100644
index 000000000000..131a8f1e10c0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/readelflib.c
@@ -0,0 +1,100 @@
+/* Support for reading ELF files.
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+int process_elf32_file (const char *file_name, const char *lib, int *flag,
+			unsigned int *osversion, char **soname,
+			void *file_contents, size_t file_length);
+int process_elf64_file (const char *file_name, const char *lib, int *flag,
+			unsigned int *osversion, char **soname,
+			void *file_contents, size_t file_length);
+
+/* The ELF flags supported by our current glibc port:
+   - EF_RISCV_FLOAT_ABI: We support the soft and double ABIs.
+   - EF_RISCV_RVC: While the Linux ABI mandates the presence of the C
+     extension, we can still support libraries compiled without that extension
+     so we just ignore this flag.
+   - EF_RISCV_RVE: glibc (and Linux) don't support RV32E based systems.
+   - EF_RISCV_TSO: The TSO extension isn't supported, as doing so would require
+     some mechanism to ensure that the TSO extension is enabled which doesn't
+     currently exist.  */
+#define SUPPORTED_ELF_FLAGS (EF_RISCV_FLOAT_ABI | EF_RISCV_RVC)
+
+/* Returns 0 if everything is ok, != 0 in case of error.  */
+int
+process_elf_file (const char *file_name, const char *lib, int *flag,
+		  unsigned int *osversion, char **soname, void *file_contents,
+		  size_t file_length)
+{
+  ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
+  Elf32_Ehdr *elf32_header = (Elf32_Ehdr *) elf_header;
+  int ret;
+  long flags;
+
+  /* RISC-V libraries are always libc.so.6+.  */
+  *flag = FLAG_ELF_LIBC6;
+
+  if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
+    {
+      ret = process_elf32_file (file_name, lib, flag, osversion, soname,
+				file_contents, file_length);
+      flags = elf32_header->e_flags;
+    }
+  else
+    {
+      ret = process_elf64_file (file_name, lib, flag, osversion, soname,
+				file_contents, file_length);
+      flags = elf32_header->e_flags;
+    }
+
+  /* RISC-V linkers encode the floating point ABI as part of the ELF headers.  */
+  switch (flags & EF_RISCV_FLOAT_ABI)
+    {
+      case EF_RISCV_FLOAT_ABI_SOFT:
+        *flag |= FLAG_RISCV_FLOAT_ABI_SOFT;
+	break;
+      case EF_RISCV_FLOAT_ABI_DOUBLE:
+        *flag |= FLAG_RISCV_FLOAT_ABI_DOUBLE;
+	break;
+      default:
+        return 1;
+    }
+
+  /* RISC-V Linux ABIs mandate the presence of the C extension.  */
+  if (flags & EF_RISCV_RVC)
+    return 1;
+
+  /* If there are any other ELF flags set then glibc doesn't support this
+     library.  */
+  if (flags & ~SUPPORTED_ELF_FLAGS)
+    return 1;
+
+  return ret;
+}
+
+#undef __ELF_NATIVE_CLASS
+#undef process_elf_file
+#define process_elf_file process_elf32_file
+#define __ELF_NATIVE_CLASS 32
+#include "elf/readelflib.c"
+
+#undef __ELF_NATIVE_CLASS
+#undef process_elf_file
+#define process_elf_file process_elf64_file
+#define __ELF_NATIVE_CLASS 64
+#include "elf/readelflib.c"
diff --git a/sysdeps/unix/sysv/linux/riscv/register-dump.h b/sysdeps/unix/sysv/linux/riscv/register-dump.h
new file mode 100644
index 000000000000..234ce630f90f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/register-dump.h
@@ -0,0 +1,63 @@
+/* Dump registers.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <string.h>
+#include <_itoa.h>
+
+static void
+hexvalue (unsigned long int value, char *buf, size_t len)
+{
+  char *cp = _itoa_word (value, buf + len, 16, 0);
+  while (cp > buf)
+    *--cp = '0';
+}
+
+#define REGDUMP_NREGS 32
+#define REGDUMP_PER_LINE (80 / (__WORDSIZE / 4 + 4))
+
+static void
+register_dump (int fd, ucontext_t *ctx)
+{
+  int i;
+  char regvalue[__WORDSIZE / 4 + 1];
+  char str[82 * ((REGDUMP_NREGS + REGDUMP_PER_LINE - 1) / REGDUMP_PER_LINE)];
+
+  static const char names[REGDUMP_NREGS][4] = {
+    "pc", "ra", "sp", "gp", "tp", "t0", "t1", "t2",
+    "s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5",
+    "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7",
+    "s8", "s9", "sA", "sB", "t3", "t4", "t5", "t6"
+  };
+
+  str[0] = 0;
+  for (i = 0; i < REGDUMP_NREGS; i++)
+    {
+      strcat (str, names[i]);
+      strcat (str, " ");
+      hexvalue (ctx->uc_mcontext.__gregs[i], regvalue, __WORDSIZE / 4);
+      strcat (str, regvalue);
+
+      if ((i + 1) % REGDUMP_PER_LINE == 0)
+	strcat (str, "\n");
+    }
+
+  write (fd, str, strlen (str));
+}
+
+#define REGISTER_DUMP register_dump (fd, ctx)
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/jmp_buf-macros.h b/sysdeps/unix/sysv/linux/riscv/rv32/jmp_buf-macros.h
new file mode 100644
index 000000000000..f7bedd70b6ff
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/jmp_buf-macros.h
@@ -0,0 +1,53 @@
+/* jump buffer constants for RISC-V
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Produced by this program:
+  
+   #include <stdio.h>
+   #include <unistd.h>
+   #include <setjmp.h>
+   #include <stddef.h>
+   
+   int main (int argc, char **argv)
+   {
+       printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf));
+       printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf));
+       printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf));
+       printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf));
+       printf ("#define MASK_WAS_SAVED_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __mask_was_saved));
+       printf ("#define SAVED_MASK_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __saved_mask));
+   } */
+
+#if defined __riscv_float_abi_soft
+# define JMP_BUF_SIZE 188
+# define JMP_BUF_ALIGN 4
+# define SIGJMP_BUF_SIZE 188
+# define SIGJMP_BUF_ALIGN 4
+# define MASK_WAS_SAVED_OFFSET 56
+# define SAVED_MASK_OFFSET 60
+#elif defined __riscv_float_abi_double
+# define JMP_BUF_SIZE 288
+# define JMP_BUF_ALIGN 8
+# define SIGJMP_BUF_SIZE 288
+# define SIGJMP_BUF_ALIGN 8
+# define MASK_WAS_SAVED_OFFSET 152
+# define SAVED_MASK_OFFSET 156
+#else
+# error "Unknown RISC-V floating-point ABI"
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/jmp_buf-macros.h b/sysdeps/unix/sysv/linux/riscv/rv64/jmp_buf-macros.h
new file mode 100644
index 000000000000..1dc546fb1473
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/jmp_buf-macros.h
@@ -0,0 +1,53 @@
+/* jump buffer constants for RISC-V
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Produced by this program:
+  
+   #include <stdio.h>
+   #include <unistd.h>
+   #include <setjmp.h>
+   #include <stddef.h>
+   
+   int main (int argc, char **argv)
+   {
+       printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf));
+       printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf));
+       printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf));
+       printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf));
+       printf ("#define MASK_WAS_SAVED_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __mask_was_saved));
+       printf ("#define SAVED_MASK_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __saved_mask));
+   } */
+
+#if defined __riscv_float_abi_soft
+# define JMP_BUF_SIZE 248
+# define JMP_BUF_ALIGN 8
+# define SIGJMP_BUF_SIZE 248
+# define SIGJMP_BUF_ALIGN 8
+# define MASK_WAS_SAVED_OFFSET 112
+# define SAVED_MASK_OFFSET 120
+#elif defined __riscv_float_abi_double
+# define JMP_BUF_SIZE 344
+# define JMP_BUF_ALIGN 8
+# define SIGJMP_BUF_SIZE 344
+# define SIGJMP_BUF_ALIGN 8
+# define MASK_WAS_SAVED_OFFSET 208
+# define SAVED_MASK_OFFSET 216
+#else
+# error "Unknown RISC-V floating-point ABI"
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/setcontext.S b/sysdeps/unix/sysv/linux/riscv/setcontext.S
new file mode 100644
index 000000000000..9f1c7b41fd40
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/setcontext.S
@@ -0,0 +1,114 @@
+/* Set current context.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "ucontext-macros.h"
+
+/*  int __setcontext (const ucontext_t *ucp)
+
+  Restores the machine context in UCP and thereby resumes execution
+  in that context.
+
+  This implementation is intended to be used for *synchronous* context
+  switches only.  Therefore, it does not have to restore anything
+  other than the PRESERVED state.  */
+
+	.text
+LEAF (__setcontext)
+
+	mv	t0, a0	/* Save ucp into t0.  */
+
+/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */
+	li	a3, _NSIG8
+	mv	a2, zero
+	add     a1, a0, UCONTEXT_SIGMASK
+	li	a0, SIG_SETMASK
+
+	li	a7, SYS_ify (rt_sigprocmask)
+	scall
+
+	bltz	a0, 99f
+
+	cfi_def_cfa (t0, 0)
+
+#ifndef __riscv_float_abi_soft
+	lw	t1, MCONTEXT_FSR(t0)
+
+	RESTORE_FP_REG_CFI (fs0,   8, t0)
+	RESTORE_FP_REG_CFI (fs1,   9, t0)
+	RESTORE_FP_REG_CFI (fs2,  18, t0)
+	RESTORE_FP_REG_CFI (fs3,  19, t0)
+	RESTORE_FP_REG_CFI (fs4,  20, t0)
+	RESTORE_FP_REG_CFI (fs5,  21, t0)
+	RESTORE_FP_REG_CFI (fs6,  22, t0)
+	RESTORE_FP_REG_CFI (fs7,  23, t0)
+	RESTORE_FP_REG_CFI (fs8,  24, t0)
+	RESTORE_FP_REG_CFI (fs9,  25, t0)
+	RESTORE_FP_REG_CFI (fs10, 26, t0)
+	RESTORE_FP_REG_CFI (fs11, 27, t0)
+
+	fssr	t1
+#endif /* __riscv_float_abi_soft */
+
+	/* Note the contents of argument registers will be random
+	   unless makecontext() has been called.  */
+	RESTORE_INT_REG     (t1,   0, t0)
+	RESTORE_INT_REG_CFI (ra,   1, t0)
+	RESTORE_INT_REG     (sp,   2, t0)
+	RESTORE_INT_REG_CFI (s0,   8, t0)
+	RESTORE_INT_REG_CFI (s1,   9, t0)
+	RESTORE_INT_REG     (a0,  10, t0)
+	RESTORE_INT_REG     (a1,  11, t0)
+	RESTORE_INT_REG     (a2,  12, t0)
+	RESTORE_INT_REG     (a3,  13, t0)
+	RESTORE_INT_REG     (a4,  14, t0)
+	RESTORE_INT_REG     (a5,  15, t0)
+	RESTORE_INT_REG     (a6,  16, t0)
+	RESTORE_INT_REG     (a7,  17, t0)
+	RESTORE_INT_REG_CFI (s2,  18, t0)
+	RESTORE_INT_REG_CFI (s3,  19, t0)
+	RESTORE_INT_REG_CFI (s4,  20, t0)
+	RESTORE_INT_REG_CFI (s5,  21, t0)
+	RESTORE_INT_REG_CFI (s6,  22, t0)
+	RESTORE_INT_REG_CFI (s7,  23, t0)
+	RESTORE_INT_REG_CFI (s8,  24, t0)
+	RESTORE_INT_REG_CFI (s9,  25, t0)
+	RESTORE_INT_REG_CFI (s10, 26, t0)
+	RESTORE_INT_REG_CFI (s11, 27, t0)
+
+	jr	t1
+
+99:	j	__syscall_error
+
+PSEUDO_END (__setcontext)
+weak_alias (__setcontext, setcontext)
+
+LEAF (__start_context)
+
+	/* Terminate call stack by noting ra == 0.  Happily, s0 == 0 here.  */
+	cfi_register (ra, s0)
+
+	/* Call the function passed to makecontext.  */
+	jalr	s1
+
+	/* Invoke subsequent context if present, else exit(0).  */
+	mv	a0, s2
+	beqz	s2, 1f
+	jal	__setcontext
+1:	j	exit
+
+PSEUDO_END (__start_context)
diff --git a/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h b/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h
new file mode 100644
index 000000000000..3ca8a80d8b2e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h
@@ -0,0 +1,28 @@
+/* RISC-V definitions for signal handling calling conventions.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/ucontext.h>
+
+#define SIGCONTEXT siginfo_t *_si, ucontext_t *
+#define SIGCONTEXT_EXTRA_ARGS _si,
+#define GET_PC(ctx)	((void *) ctx->uc_mcontext.__gregs[REG_PC])
+#define GET_FRAME(ctx)	((void *) ctx->uc_mcontext.__gregs[REG_S0])
+#define GET_STACK(ctx)	((void *) ctx->uc_mcontext.__gregs[REG_SP])
+
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
diff --git a/sysdeps/unix/sysv/linux/riscv/swapcontext.S b/sysdeps/unix/sysv/linux/riscv/swapcontext.S
new file mode 100644
index 000000000000..75b58dc6682d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/swapcontext.S
@@ -0,0 +1,125 @@
+/* Save and set current context.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "ucontext-macros.h"
+
+/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
+
+LEAF (__swapcontext)
+	mv	t0, a1			/* Save ucp into t0.  */
+
+	SAVE_INT_REG (ra,   0, a0)
+	SAVE_INT_REG (ra,   1, a0)
+	SAVE_INT_REG (sp,   2, a0)
+	SAVE_INT_REG (s0,   8, a0)
+	SAVE_INT_REG (s1,   9, a0)
+	SAVE_INT_REG (x0,  10, a0)	/* return 0 by overwriting a0.  */
+	SAVE_INT_REG (s2,  18, a0)
+	SAVE_INT_REG (s3,  19, a0)
+	SAVE_INT_REG (s4,  20, a0)
+	SAVE_INT_REG (s5,  21, a0)
+	SAVE_INT_REG (s6,  22, a0)
+	SAVE_INT_REG (s7,  23, a0)
+	SAVE_INT_REG (s8,  24, a0)
+	SAVE_INT_REG (s9,  25, a0)
+	SAVE_INT_REG (s10, 26, a0)
+	SAVE_INT_REG (s11, 27, a0)
+
+#ifndef __riscv_float_abi_soft
+	frsr a1
+
+	SAVE_FP_REG (fs0,   8, a0)
+	SAVE_FP_REG (fs1,   9, a0)
+	SAVE_FP_REG (fs2,  18, a0)
+	SAVE_FP_REG (fs3,  19, a0)
+	SAVE_FP_REG (fs4,  20, a0)
+	SAVE_FP_REG (fs5,  21, a0)
+	SAVE_FP_REG (fs6,  22, a0)
+	SAVE_FP_REG (fs7,  23, a0)
+	SAVE_FP_REG (fs8,  24, a0)
+	SAVE_FP_REG (fs9,  25, a0)
+	SAVE_FP_REG (fs10, 26, a0)
+	SAVE_FP_REG (fs11, 27, a0)
+
+	sw	a1, MCONTEXT_FSR(a0)
+#endif /* __riscv_float_abi_soft */
+
+/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
+	li	a3, _NSIG8
+	add	a2, a0, UCONTEXT_SIGMASK
+	add     a1, t0, UCONTEXT_SIGMASK
+	li	a0, SIG_SETMASK
+
+	li	a7, SYS_ify (rt_sigprocmask)
+	scall
+
+	bltz	a0, 99f
+
+#ifndef __riscv_float_abi_soft
+	lw	t1, MCONTEXT_FSR(t0)
+
+	RESTORE_FP_REG (fs0,   8, t0)
+	RESTORE_FP_REG (fs1,   9, t0)
+	RESTORE_FP_REG (fs2,  18, t0)
+	RESTORE_FP_REG (fs3,  19, t0)
+	RESTORE_FP_REG (fs4,  20, t0)
+	RESTORE_FP_REG (fs5,  21, t0)
+	RESTORE_FP_REG (fs6,  22, t0)
+	RESTORE_FP_REG (fs7,  23, t0)
+	RESTORE_FP_REG (fs8,  24, t0)
+	RESTORE_FP_REG (fs9,  25, t0)
+	RESTORE_FP_REG (fs10, 26, t0)
+	RESTORE_FP_REG (fs11, 27, t0)
+
+	fssr	t1
+#endif /* __riscv_float_abi_soft */
+
+	/* Note the contents of argument registers will be random
+	   unless makecontext() has been called.  */
+	RESTORE_INT_REG (t1,   0, t0)
+	RESTORE_INT_REG (ra,   1, t0)
+	RESTORE_INT_REG (sp,   2, t0)
+	RESTORE_INT_REG (s0,   8, t0)
+	RESTORE_INT_REG (s1,   9, t0)
+	RESTORE_INT_REG (a0,  10, t0)
+	RESTORE_INT_REG (a1,  11, t0)
+	RESTORE_INT_REG (a2,  12, t0)
+	RESTORE_INT_REG (a3,  13, t0)
+	RESTORE_INT_REG (a4,  14, t0)
+	RESTORE_INT_REG (a5,  15, t0)
+	RESTORE_INT_REG (a6,  16, t0)
+	RESTORE_INT_REG (a7,  17, t0)
+	RESTORE_INT_REG (s2,  18, t0)
+	RESTORE_INT_REG (s3,  19, t0)
+	RESTORE_INT_REG (s4,  20, t0)
+	RESTORE_INT_REG (s5,  21, t0)
+	RESTORE_INT_REG (s6,  22, t0)
+	RESTORE_INT_REG (s7,  23, t0)
+	RESTORE_INT_REG (s8,  24, t0)
+	RESTORE_INT_REG (s9,  25, t0)
+	RESTORE_INT_REG (s10, 26, t0)
+	RESTORE_INT_REG (s11, 27, t0)
+
+	jr	t1
+
+
+99:	j	__syscall_error
+
+PSEUDO_END (__swapcontext)
+
+weak_alias (__swapcontext, swapcontext)
diff --git a/sysdeps/unix/sysv/linux/riscv/sys/cachectl.h b/sysdeps/unix/sysv/linux/riscv/sys/cachectl.h
new file mode 100644
index 000000000000..46a2cb6082f7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sys/cachectl.h
@@ -0,0 +1,32 @@
+/* RISC-V instruction cache flushing interface
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_CACHECTL_H
+#define _SYS_CACHECTL_H 1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+extern int __riscv_flush_icache (void *__start, void *__end,
+				 unsigned long int __flags);
+
+__END_DECLS
+
+#endif /* sys/cachectl.h */
diff --git a/sysdeps/unix/sysv/linux/riscv/sys/procfs.h b/sysdeps/unix/sysv/linux/riscv/sys/procfs.h
new file mode 100644
index 000000000000..518de567410d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sys/procfs.h
@@ -0,0 +1,114 @@
+/* Core image file related definitions, RISC-V version.
+   Copyright (C) 1996-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PROCFS_H
+#define _SYS_PROCFS_H	1
+
+/* This is somehow modelled after the file of the same name on SysVr4
+   systems.  It provides a definition of the core file format for ELF
+   used on Linux.  */
+
+#include <features.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/user.h>
+#include <sys/ucontext.h>
+
+/* ELF register definitions */
+#define ELF_NGREG	NGREG
+#define ELF_NFPREG	NFPREG
+
+typedef unsigned long int elf_greg_t;
+typedef unsigned long int elf_gregset_t[32];
+typedef union __riscv_mc_fp_state elf_fpregset_t;
+
+__BEGIN_DECLS
+
+struct elf_siginfo
+  {
+    int si_signo;			/* Signal number.  */
+    int si_code;			/* Extra code.  */
+    int si_errno;			/* Errno.  */
+  };
+
+
+/* Definitions to generate Intel SVR4-like core files.  These mostly
+   have the same names as the SVR4 types with "elf_" tacked on the
+   front to prevent clashes with linux definitions, and the typedef
+   forms have been avoided.  This is mostly like the SVR4 structure,
+   but more Linuxy, with things that Linux does not support and which
+   gdb doesn't really use excluded.  Fields present but not used are
+   marked with "XXX".  */
+struct elf_prstatus
+  {
+    struct elf_siginfo pr_info;		/* Info associated with signal.  */
+    short int pr_cursig;		/* Current signal.  */
+    unsigned long int pr_sigpend;	/* Set of pending signals.  */
+    unsigned long int pr_sighold;	/* Set of held signals.  */
+    __pid_t pr_pid;
+    __pid_t pr_ppid;
+    __pid_t pr_pgrp;
+    __pid_t pr_sid;
+    struct timeval pr_utime;		/* User time.  */
+    struct timeval pr_stime;		/* System time.  */
+    struct timeval pr_cutime;		/* Cumulative user time.  */
+    struct timeval pr_cstime;		/* Cumulative system time.  */
+    elf_gregset_t pr_reg;		/* GP registers.  */
+    int pr_fpvalid;			/* True if math copro being used.  */
+  };
+
+
+#define ELF_PRARGSZ     (80)    /* Number of chars for args */
+
+struct elf_prpsinfo
+  {
+    char pr_state;			/* Numeric process state.  */
+    char pr_sname;			/* Char for pr_state.  */
+    char pr_zomb;			/* Zombie.  */
+    char pr_nice;			/* Nice val.  */
+    unsigned long int pr_flag;		/* Flags.  */
+    long int pr_uid;
+    long int pr_gid;
+    int pr_pid, pr_ppid, pr_pgrp, pr_sid;
+    /* Lots missing */
+    char pr_fname[16];			/* Filename of executable.  */
+    char pr_psargs[ELF_PRARGSZ];	/* Initial part of arg list.  */
+  };
+
+/* The rest of this file provides the types for emulation of the
+   Solaris <proc_service.h> interfaces that should be implemented by
+   users of libthread_db.  */
+
+/* Addresses.  */
+typedef void *psaddr_t;
+
+/* Register sets.  Linux has different names.  */
+typedef elf_gregset_t prgregset_t;
+typedef elf_fpregset_t prfpregset_t;
+
+/* We don't have any differences between processes and threads,
+   therefore habe only ine PID type.  */
+typedef __pid_t lwpid_t;
+
+/* Process status and info.  In the end we do provide typedefs for them.  */
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif	/* sys/procfs.h */
diff --git a/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h b/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
new file mode 100644
index 000000000000..d63c68ff5e0b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
@@ -0,0 +1,110 @@
+/* struct ucontext definition, RISC-V version.
+   Copyright (C) 1997-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Don't rely on this, the interface is currently messed up and may need to
+   be broken to be fixed.  */
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+
+#include <features.h>
+
+#include <bits/types/sigset_t.h>
+#include <bits/types/stack_t.h>
+
+typedef unsigned long int __riscv_mc_gp_state[32];
+
+#ifdef __USE_MISC
+# define NGREG	32
+
+#define REG_PC 0
+#define REG_RA 1
+#define REG_SP 2
+#define REG_TP 4
+#define REG_S0 8
+#define REG_S1 9
+#define REG_A0 10
+#define REG_S2 18
+#define REG_NARGS 8
+
+typedef unsigned long int greg_t;
+
+/* Container for all general registers.  */
+typedef __riscv_mc_gp_state gregset_t;
+
+/* Container for floating-point state.  */
+typedef union __riscv_mc_fp_state fpregset_t;
+#endif
+
+struct __riscv_mc_f_ext_state
+  {
+    unsigned int __f[32];
+    unsigned int __fcsr;
+  };
+
+struct __riscv_mc_d_ext_state
+  {
+    unsigned long long int __f[32];
+    unsigned int __fcsr;
+  };
+
+struct __riscv_mc_q_ext_state
+  {
+    unsigned long long int __f[64] __attribute__ ((__aligned__ (16)));
+    unsigned int __fcsr;
+    /* Reserved for expansion of sigcontext structure.  Currently zeroed
+       upon signal, and must be zero upon sigreturn.  */
+    unsigned int __glibc_reserved[3];
+  };
+
+union __riscv_mc_fp_state
+  {
+    struct __riscv_mc_f_ext_state __f;
+    struct __riscv_mc_d_ext_state __d;
+    struct __riscv_mc_q_ext_state __q;
+  };
+
+typedef struct mcontext_t
+  {
+    __riscv_mc_gp_state __gregs;
+    union  __riscv_mc_fp_state __fpregs;
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+  {
+    unsigned long int  __uc_flags;
+    struct ucontext_t *uc_link;
+    stack_t            uc_stack;
+    sigset_t           uc_sigmask;
+    /* There's some padding here to allow sigset_t to be expanded in the
+       future.  Though this is unlikely, other architectures put uc_sigmask
+       at the end of this structure and explicitly state it can be
+       expanded, so we didn't want to box ourselves in here.  */
+    char               __glibc_reserved[1024 / 8 - sizeof (sigset_t)];
+    /* We can't put uc_sigmask at the end of this structure because we need
+       to be able to expand sigcontext in the future.  For example, the
+       vector ISA extension will almost certainly add ISA state.  We want
+       to ensure all user-visible ISA state can be saved and restored via a
+       ucontext, so we're putting this at the end in order to allow for
+       infinite extensibility.  Since we know this will be extended and we
+       assume sigset_t won't be extended an extreme amount, we're
+       prioritizing this.  */
+    mcontext_t uc_mcontext;
+  } ucontext_t;
+
+#endif /* sys/ucontext.h */
diff --git a/sysdeps/unix/sysv/linux/riscv/sys/user.h b/sysdeps/unix/sysv/linux/riscv/sys/user.h
new file mode 100644
index 000000000000..7e648f2d5ccd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sys/user.h
@@ -0,0 +1,23 @@
+/* Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_USER_H
+#define _SYS_USER_H	1
+
+
+
+#endif	/* _SYS_USER_H */
diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h b/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h
new file mode 100644
index 000000000000..450dd6fbb820
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h
@@ -0,0 +1,128 @@
+/* Assembler macros with cancellation support, RISC-V version.
+   Copyright (C) 2003-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <sysdeps/generic/sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+#include <sys/asm.h>
+
+/* Gas will put the initial save of $gp into the CIE, because it appears to
+   happen before any instructions.  So we use cfi_same_value instead of
+   cfi_restore.  */
+
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)				\
+      .align 2;								\
+  L(pseudo_start):							\
+  99: j __syscall_error;						\
+  ENTRY (name)								\
+    SINGLE_THREAD_P(t0);						\
+    bnez t0, L(pseudo_cancel);  					\
+  .type __##syscall_name##_nocancel, @function;				\
+  .globl __##syscall_name##_nocancel;					\
+  __##syscall_name##_nocancel:						\
+    li a7, SYS_ify(syscall_name);					\
+    scall;								\
+    bltz a0, 99b;							\
+    ret;								\
+  .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	\
+  L(pseudo_cancel):							\
+    addi sp, sp, -STKSPACE;						\
+    REG_S ra, STKOFF_RA(sp);						\
+    cfi_rel_offset (ra, STKOFF_RA);					\
+    PUSHARGS_##args;			/* Save syscall args.  */	\
+    CENABLE;								\
+    REG_S a0, STKOFF_SVMSK(sp);		/* Save mask.  */		\
+    POPARGS_##args;			/* Restore syscall args.  */	\
+    li a7, SYS_ify (syscall_name);					\
+    scall;								\
+    REG_S a0, STKOFF_A0(sp);		/* Save syscall result.  */	\
+    REG_L a0, STKOFF_SVMSK(sp);		/* Pass mask as arg1.  */	\
+    CDISABLE;								\
+    REG_L ra, STKOFF_RA(sp);		/* Restore return address.  */	\
+    REG_L a0, STKOFF_A0(sp);		/* Restore syscall result.  */	\
+    addi sp, sp, STKSPACE;						\
+    bltz a0, 99b;							\
+  L(pseudo_end):
+
+
+# define PUSHARGS_0	/* Nothing to do.  */
+# define PUSHARGS_1	PUSHARGS_0 REG_S a0, STKOFF_A0(sp); cfi_rel_offset (a0, STKOFF_A0);
+# define PUSHARGS_2	PUSHARGS_1 REG_S a1, STKOFF_A1(sp); cfi_rel_offset (a1, STKOFF_A1);
+# define PUSHARGS_3	PUSHARGS_2 REG_S a2, STKOFF_A2(sp); cfi_rel_offset (a2, STKOFF_A2);
+# define PUSHARGS_4	PUSHARGS_3 REG_S a3, STKOFF_A3(sp); cfi_rel_offset (a3, STKOFF_A3);
+# define PUSHARGS_5	PUSHARGS_4 REG_S a4, STKOFF_A4(sp); cfi_rel_offset (a4, STKOFF_A4);
+# define PUSHARGS_6	PUSHARGS_5 REG_S a5, STKOFF_A5(sp); cfi_rel_offset (a5, STKOFF_A5);
+
+# define POPARGS_0	/* Nothing to do.  */
+# define POPARGS_1	POPARGS_0 REG_L a0, STKOFF_A0(sp);
+# define POPARGS_2	POPARGS_1 REG_L a1, STKOFF_A1(sp);
+# define POPARGS_3	POPARGS_2 REG_L a2, STKOFF_A2(sp);
+# define POPARGS_4	POPARGS_3 REG_L a3, STKOFF_A3(sp);
+# define POPARGS_5	POPARGS_4 REG_L a4, STKOFF_A4(sp);
+# define POPARGS_6	POPARGS_5 REG_L a5, STKOFF_A5(sp);
+
+/* Avoid D$ misses by keeping less-used arguments further down stack.  */
+# define STKOFF_A5	0
+# define STKOFF_A4	(STKOFF_A5 + SZREG)
+# define STKOFF_A3	(STKOFF_A4 + SZREG)
+# define STKOFF_A2	(STKOFF_A3 + SZREG)
+# define STKOFF_A1	(STKOFF_A2 + SZREG)
+# define STKOFF_A0	(STKOFF_A1 + SZREG)
+# define STKOFF_SVMSK	(STKOFF_A0 + SZREG)
+# define STKOFF_RA	(STKOFF_SVMSK + SZREG)
+# define STKSPACE	(STKOFF_RA + SZREG)
+
+# if IS_IN (libpthread)
+#  define CENABLE  call __pthread_enable_asynccancel
+#  define CDISABLE call __pthread_disable_asynccancel
+# elif IS_IN (librt)
+#  define CENABLE  call __librt_enable_asynccancel
+#  define CDISABLE call __librt_disable_asynccancel
+# else
+#  define CENABLE  call __libc_enable_asynccancel
+#  define CDISABLE call __libc_disable_asynccancel
+# endif
+
+# ifndef __ASSEMBLER__
+#  define SINGLE_THREAD_P						\
+	__glibc_likely (THREAD_GETMEM (THREAD_SELF,			\
+				       header.multiple_threads)	== 0)
+# else
+#  include "tcb-offsets.h"
+#  define SINGLE_THREAD_P(reg)						\
+	lw reg, MULTIPLE_THREADS_OFFSET(tp)
+#endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P 1
+# define NO_CANCELLATION 1
+
+#endif
+
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+  __glibc_likely (THREAD_GETMEM (THREAD_SELF, \
+				 header.multiple_threads) == 0)
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/ucontext-macros.h b/sysdeps/unix/sysv/linux/riscv/ucontext-macros.h
new file mode 100644
index 000000000000..a73c3a9b049b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/ucontext-macros.h
@@ -0,0 +1,49 @@
+/* Macros for ucontext routines.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LINUX_RISCV_UCONTEXT_MACROS_H
+#define _LINUX_RISCV_UCONTEXT_MACROS_H
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+#include "ucontext_i.h"
+
+#define MCONTEXT_FSR (32 * SZFREG + MCONTEXT_FPREGS)
+
+#define SAVE_FP_REG(name, num, base)			\
+  FREG_S name, ((num) * SZFREG + MCONTEXT_FPREGS)(base)
+
+#define RESTORE_FP_REG(name, num, base)			\
+  FREG_L name, ((num) * SZFREG + MCONTEXT_FPREGS)(base)
+
+#define RESTORE_FP_REG_CFI(name, num, base)		\
+  RESTORE_FP_REG (name, num, base);			\
+  cfi_offset (name, (num) * SZFREG + MCONTEXT_FPREGS)
+
+#define SAVE_INT_REG(name, num, base)			\
+  REG_S name, ((num) * SZREG + MCONTEXT_GREGS)(base)
+
+#define RESTORE_INT_REG(name, num, base)		\
+  REG_L name, ((num) * SZREG + MCONTEXT_GREGS)(base)
+
+#define RESTORE_INT_REG_CFI(name, num, base)		\
+  RESTORE_INT_REG (name, num, base);			\
+  cfi_offset (name, (num) * SZREG + MCONTEXT_GREGS)
+
+#endif /* _LINUX_RISCV_UCONTEXT_MACROS_H */
diff --git a/sysdeps/unix/sysv/linux/riscv/ucontext_i.sym b/sysdeps/unix/sysv/linux/riscv/ucontext_i.sym
new file mode 100644
index 000000000000..be55b26310bb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/ucontext_i.sym
@@ -0,0 +1,31 @@
+#include <inttypes.h>
+#include <signal.h>
+#include <stddef.h>
+#include <sys/ucontext.h>
+
+-- Constants used by the rt_sigprocmask call.
+
+SIG_BLOCK
+SIG_SETMASK
+
+_NSIG8				(_NSIG / 8)
+
+-- Offsets of the fields in the ucontext_t structure.
+#define ucontext(member)	offsetof (ucontext_t, member)
+#define stack(member)		ucontext (uc_stack.member)
+#define mcontext(member)	ucontext (uc_mcontext.member)
+
+UCONTEXT_FLAGS			ucontext (__uc_flags)
+UCONTEXT_LINK			ucontext (uc_link)
+UCONTEXT_STACK			ucontext (uc_stack)
+UCONTEXT_MCONTEXT		ucontext (uc_mcontext)
+UCONTEXT_SIGMASK		ucontext (uc_sigmask)
+
+STACK_SP			stack (ss_sp)
+STACK_SIZE			stack (ss_size)
+STACK_FLAGS			stack (ss_flags)
+
+MCONTEXT_GREGS			mcontext (__gregs)
+MCONTEXT_FPREGS			mcontext (__fpregs)
+
+UCONTEXT_SIZE			sizeof (ucontext_t)
-- 
2.13.6

[PATCH 14/17] RISC-V: Linux Startup and Dynamic Loading Code

[Palmer Dabbelt]

This contains the Linux-specific code for loading programs on RISC-V.
---
 sysdeps/unix/sysv/linux/riscv/dl-static.c | 84 +++++++++++++++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/ldconfig.h  | 36 +++++++++++++
 sysdeps/unix/sysv/linux/riscv/ldsodefs.h  | 32 ++++++++++++
 3 files changed, 152 insertions(+)
 create mode 100644 sysdeps/unix/sysv/linux/riscv/dl-static.c
 create mode 100644 sysdeps/unix/sysv/linux/riscv/ldconfig.h
 create mode 100644 sysdeps/unix/sysv/linux/riscv/ldsodefs.h

diff --git a/sysdeps/unix/sysv/linux/riscv/dl-static.c b/sysdeps/unix/sysv/linux/riscv/dl-static.c
new file mode 100644
index 000000000000..f88512a8a954
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/dl-static.c
@@ -0,0 +1,84 @@
+/* Variable initialization.  RISC-V version
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ldsodefs.h>
+
+#ifdef SHARED
+
+void
+_dl_var_init (void *array[])
+{
+  /* It has to match "variables" below.  */
+  enum
+    {
+      DL_PAGESIZE = 0
+    };
+
+  GLRO (dl_pagesize) = *((size_t *) array[DL_PAGESIZE]);
+}
+
+#else
+
+static void *variables[] =
+{
+  &GLRO (dl_pagesize)
+};
+
+static void
+_dl_unprotect_relro (struct link_map *l)
+{
+  ElfW (Addr) start = ((l->l_addr + l->l_relro_addr)
+		       & ~(GLRO (dl_pagesize) - 1));
+  ElfW (Addr) end = ((l->l_addr + l->l_relro_addr + l->l_relro_size)
+		     & ~(GLRO (dl_pagesize) - 1));
+
+  if (start != end)
+    __mprotect ((void *) start, end - start, PROT_READ | PROT_WRITE);
+}
+
+void
+_dl_static_init (struct link_map *l)
+{
+  struct link_map *rtld_map = l;
+  struct r_scope_elem **scope;
+  const ElfW (Sym) *ref = NULL;
+  lookup_t loadbase;
+  void (*f) (void *[]);
+  size_t i;
+
+  loadbase = _dl_lookup_symbol_x ("_dl_var_init", l, &ref, l->l_local_scope,
+				  NULL, 0, 1, NULL);
+
+  for (scope = l->l_local_scope; *scope != NULL; scope++)
+    for (i = 0; i < (*scope)->r_nlist; i++)
+      if ((*scope)->r_list[i] == loadbase)
+	{
+	  rtld_map = (*scope)->r_list[i];
+	  break;
+	}
+
+  if (ref != NULL)
+    {
+      f = (void (*) (void *[])) DL_SYMBOL_ADDRESS (loadbase, ref);
+      _dl_unprotect_relro (rtld_map);
+      f (variables);
+      _dl_protect_relro (rtld_map);
+    }
+}
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/riscv/ldconfig.h b/sysdeps/unix/sysv/linux/riscv/ldconfig.h
new file mode 100644
index 000000000000..088c201541eb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/ldconfig.h
@@ -0,0 +1,36 @@
+/* ldconfig default paths and libraries.  Linux/RISC-V version.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/generic/ldconfig.h>
+
+#define LD_SO_PREFIX "/lib/ld-linux-"
+#define LD_SO_SUFFIX ".so.1"
+
+#if __riscv_xlen == 64
+# define LD_SO_ABI "riscv64-lp64"
+#else
+# define LD_SO_ABI "riscv32-ilp32"
+#endif
+
+#define SYSDEP_KNOWN_INTERPRETER_NAMES				\
+  { LD_SO_PREFIX LD_SO_ABI "d" LD_SO_SUFFIX, FLAG_ELF_LIBC6 },	\
+  { LD_SO_PREFIX LD_SO_ABI     LD_SO_SUFFIX, FLAG_ELF_LIBC6 },
+
+#define SYSDEP_KNOWN_LIBRARY_NAMES	\
+  { "libc.so.6", FLAG_ELF_LIBC6 },	\
+  { "libm.so.6", FLAG_ELF_LIBC6 },
diff --git a/sysdeps/unix/sysv/linux/riscv/ldsodefs.h b/sysdeps/unix/sysv/linux/riscv/ldsodefs.h
new file mode 100644
index 000000000000..b9421ffdfa21
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/ldsodefs.h
@@ -0,0 +1,32 @@
+/* RISC-V dynamic linker data structures for loaded ELF shared objects.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_LDSODEFS_H
+
+/* Get the real definitions.  */
+#include_next <ldsodefs.h>
+
+/* Now define our stuff.  */
+
+/* We need special support to initialize DSO loaded for statically linked
+   binaries.  */
+extern void _dl_static_init (struct link_map *map);
+#undef DL_STATIC_INIT
+#define DL_STATIC_INIT(map) _dl_static_init (map)
+
+#endif /* ldsodefs.h */
-- 
2.13.6

[PATCH 15/17] RISC-V: Add ABI Lists

[Palmer Dabbelt]

The libm-test-ulps* are just placeholders, so they're almost certainly
nonsense.  Aside from those, I started with the aarch64 ABI lists and
manually went through each difference, ensuring that the missing entries
had been deprecated along the line.
---
 sysdeps/riscv/libm-test-ulps                       | 2198 ++++++++++++++++++++
 sysdeps/riscv/libm-test-ulps-name                  |    1 +
 .../unix/sysv/linux/riscv/libBrokenLocale.abilist  |    2 +
 sysdeps/unix/sysv/linux/riscv/libanl.abilist       |    5 +
 sysdeps/unix/sysv/linux/riscv/libcrypt.abilist     |    8 +
 sysdeps/unix/sysv/linux/riscv/libdl.abilist        |   10 +
 sysdeps/unix/sysv/linux/riscv/libm.abilist         |  970 +++++++++
 sysdeps/unix/sysv/linux/riscv/libnsl.abilist       |  121 ++
 sysdeps/unix/sysv/linux/riscv/libpthread.abilist   |  217 ++
 sysdeps/unix/sysv/linux/riscv/librt.abilist        |   36 +
 sysdeps/unix/sysv/linux/riscv/libthread_db.abilist |   41 +
 sysdeps/unix/sysv/linux/riscv/libutil.abilist      |    7 +
 sysdeps/unix/sysv/linux/riscv/localplt.data        |   19 +
 sysdeps/unix/sysv/linux/riscv/rv32/c++-types.data  |   67 +
 sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist      |   10 +
 sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist    | 2096 +++++++++++++++++++
 .../unix/sysv/linux/riscv/rv32/libresolv.abilist   |   80 +
 sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data  |   67 +
 sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist      |   10 +
 sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist    | 2096 +++++++++++++++++++
 .../unix/sysv/linux/riscv/rv64/libresolv.abilist   |   80 +
 21 files changed, 8141 insertions(+)
 create mode 100644 sysdeps/riscv/libm-test-ulps
 create mode 100644 sysdeps/riscv/libm-test-ulps-name
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libBrokenLocale.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libanl.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libcrypt.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libdl.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libm.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libnsl.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libpthread.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/librt.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libthread_db.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/libutil.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/localplt.data
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/c++-types.data
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist

diff --git a/sysdeps/riscv/libm-test-ulps b/sysdeps/riscv/libm-test-ulps
new file mode 100644
index 000000000000..f8feadcd0de9
--- /dev/null
+++ b/sysdeps/riscv/libm-test-ulps
@@ -0,0 +1,2198 @@
+# Begin of automatic generation
+
+# Maximal error of functions:
+Function: "acos":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "acos_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "acos_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "acos_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "acosh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "acosh_downward":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "acosh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "acosh_upward":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "asin":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "asin_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "asin_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "asin_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "asinh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "asinh_downward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "asinh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "asinh_upward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "atan":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "atan2":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "atan2_downward":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "atan2_towardzero":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "atan2_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "atan_downward":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "atan_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "atan_upward":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "atanh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "atanh_downward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "atanh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "atanh_upward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "cabs":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "cabs_downward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "cabs_towardzero":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "cabs_upward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: Real part of "cacos":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: Imaginary part of "cacos":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: Real part of "cacos_downward":
+double: 3
+float: 2
+idouble: 3
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+ldouble: 3
+
+Function: Imaginary part of "ctanh":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: Real part of "ctanh_downward":
+double: 4
+float: 2
+idouble: 4
+ifloat: 2
+ildouble: 5
+ldouble: 5
+
+Function: Imaginary part of "ctanh_downward":
+double: 6
+float: 5
+idouble: 6
+ifloat: 5
+ildouble: 4
+ldouble: 4
+
+Function: Real part of "ctanh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 5
+ldouble: 5
+
+Function: Imaginary part of "ctanh_towardzero":
+double: 5
+float: 2
+idouble: 5
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: Real part of "ctanh_upward":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 5
+ldouble: 5
+
+Function: Imaginary part of "ctanh_upward":
+double: 2
+float: 3
+idouble: 2
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "erf":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "erf_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "erf_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "erf_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "erfc":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "erfc_downward":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+ildouble: 5
+ldouble: 5
+
+Function: "erfc_towardzero":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "erfc_upward":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+ildouble: 5
+ldouble: 5
+
+Function: "exp":
+ildouble: 1
+ldouble: 1
+
+Function: "exp10":
+double: 2
+idouble: 2
+ildouble: 2
+ldouble: 2
+
+Function: "exp10_downward":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "exp10_towardzero":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "exp10_upward":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "exp2":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "exp2_downward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "exp2_towardzero":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "exp2_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "exp_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "exp_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "exp_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "expm1":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "expm1_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "expm1_towardzero":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 4
+ldouble: 4
+
+Function: "expm1_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "gamma":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "gamma_downward":
+double: 4
+float: 4
+idouble: 4
+ifloat: 4
+ildouble: 8
+ldouble: 8
+
+Function: "gamma_towardzero":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "gamma_upward":
+double: 4
+float: 5
+idouble: 4
+ifloat: 5
+ildouble: 8
+ldouble: 8
+
+Function: "hypot":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "hypot_downward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "hypot_towardzero":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "hypot_upward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "j0":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "j0_downward":
+double: 2
+float: 4
+idouble: 2
+ifloat: 4
+ildouble: 4
+ldouble: 4
+
+Function: "j0_towardzero":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "j0_upward":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 5
+ldouble: 5
+
+Function: "j1":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 4
+ldouble: 4
+
+Function: "j1_downward":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 4
+ldouble: 4
+
+Function: "j1_towardzero":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 4
+ldouble: 4
+
+Function: "j1_upward":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+ildouble: 3
+ldouble: 3
+
+Function: "jn":
+double: 4
+float: 4
+idouble: 4
+ifloat: 4
+ildouble: 7
+ldouble: 7
+
+Function: "jn_downward":
+double: 4
+float: 5
+idouble: 4
+ifloat: 5
+ildouble: 8
+ldouble: 8
+
+Function: "jn_towardzero":
+double: 4
+float: 5
+idouble: 4
+ifloat: 5
+ildouble: 8
+ldouble: 8
+
+Function: "jn_upward":
+double: 5
+float: 4
+idouble: 5
+ifloat: 4
+ildouble: 7
+ldouble: 7
+
+Function: "lgamma":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "lgamma_downward":
+double: 4
+float: 4
+idouble: 4
+ifloat: 4
+ildouble: 8
+ldouble: 8
+
+Function: "lgamma_towardzero":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "lgamma_upward":
+double: 4
+float: 5
+idouble: 4
+ifloat: 5
+ildouble: 8
+ldouble: 8
+
+Function: "log":
+ildouble: 1
+ldouble: 1
+
+Function: "log10":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 1
+ldouble: 1
+
+Function: "log10_downward":
+double: 2
+float: 3
+idouble: 2
+ifloat: 3
+ildouble: 1
+ldouble: 1
+
+Function: "log10_towardzero":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "log10_upward":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 1
+ldouble: 1
+
+Function: "log1p":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "log1p_downward":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "log1p_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "log1p_upward":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "log2":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "log2_downward":
+double: 3
+idouble: 3
+ildouble: 3
+ldouble: 3
+
+Function: "log2_towardzero":
+double: 2
+idouble: 2
+ildouble: 1
+ldouble: 1
+
+Function: "log2_upward":
+double: 3
+idouble: 3
+ildouble: 1
+ldouble: 1
+
+Function: "log_downward":
+ildouble: 1
+ldouble: 1
+
+Function: "log_towardzero":
+ildouble: 2
+ldouble: 2
+
+Function: "log_upward":
+double: 1
+idouble: 1
+ildouble: 1
+ldouble: 1
+
+Function: "pow":
+ildouble: 2
+ldouble: 2
+
+Function: "pow_downward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "pow_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "pow_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 2
+ldouble: 2
+
+Function: "sin":
+ildouble: 1
+ldouble: 1
+
+Function: "sin_downward":
+double: 1
+idouble: 1
+ildouble: 3
+ldouble: 3
+
+Function: "sin_towardzero":
+double: 1
+idouble: 1
+ildouble: 2
+ldouble: 2
+
+Function: "sin_upward":
+double: 1
+idouble: 1
+ildouble: 3
+ldouble: 3
+
+Function: "sincos":
+ildouble: 1
+ldouble: 1
+
+Function: "sincos_downward":
+double: 1
+idouble: 1
+ildouble: 3
+ldouble: 3
+
+Function: "sincos_towardzero":
+double: 1
+idouble: 1
+ildouble: 2
+ldouble: 2
+
+Function: "sincos_upward":
+double: 1
+idouble: 1
+ildouble: 3
+ldouble: 3
+
+Function: "sinh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "sinh_downward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 3
+ldouble: 3
+
+Function: "sinh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "sinh_upward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "tan":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "tan_downward":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+ildouble: 1
+ldouble: 1
+
+Function: "tan_towardzero":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "tan_upward":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
+Function: "tanh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "tanh_downward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 4
+ldouble: 4
+
+Function: "tanh_towardzero":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+ildouble: 3
+ldouble: 3
+
+Function: "tanh_upward":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 3
+ldouble: 3
+
+Function: "tgamma":
+double: 5
+float: 4
+idouble: 5
+ifloat: 4
+ildouble: 4
+ldouble: 4
+
+Function: "tgamma_downward":
+double: 5
+float: 5
+idouble: 5
+ifloat: 5
+ildouble: 5
+ldouble: 5
+
+Function: "tgamma_towardzero":
+double: 5
+float: 4
+idouble: 5
+ifloat: 4
+ildouble: 5
+ldouble: 5
+
+Function: "tgamma_upward":
+double: 4
+float: 4
+idouble: 4
+ifloat: 4
+ildouble: 4
+ldouble: 4
+
+Function: "y0":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+ildouble: 3
+ldouble: 3
+
+Function: "y0_downward":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+ildouble: 4
+ldouble: 4
+
+Function: "y0_towardzero":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 3
+ldouble: 3
+
+Function: "y0_upward":
+double: 2
+float: 5
+idouble: 2
+ifloat: 5
+ildouble: 3
+ldouble: 3
+
+Function: "y1":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "y1_downward":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 4
+ldouble: 4
+
+Function: "y1_towardzero":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+ildouble: 2
+ldouble: 2
+
+Function: "y1_upward":
+double: 5
+float: 2
+idouble: 5
+ifloat: 2
+ildouble: 5
+ldouble: 5
+
+Function: "yn":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "yn_downward":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+ildouble: 5
+ldouble: 5
+
+Function: "yn_towardzero":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "yn_upward":
+double: 4
+float: 5
+idouble: 4
+ifloat: 5
+ildouble: 5
+ldouble: 5
+
+# end of automatic generation
diff --git a/sysdeps/riscv/libm-test-ulps-name b/sysdeps/riscv/libm-test-ulps-name
new file mode 100644
index 000000000000..827fcdca1982
--- /dev/null
+++ b/sysdeps/riscv/libm-test-ulps-name
@@ -0,0 +1 @@
+RISC-V
diff --git a/sysdeps/unix/sysv/linux/riscv/libBrokenLocale.abilist b/sysdeps/unix/sysv/linux/riscv/libBrokenLocale.abilist
new file mode 100644
index 000000000000..78f0bef08395
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libBrokenLocale.abilist
@@ -0,0 +1,2 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __ctype_get_mb_cur_max F
diff --git a/sysdeps/unix/sysv/linux/riscv/libanl.abilist b/sysdeps/unix/sysv/linux/riscv/libanl.abilist
new file mode 100644
index 000000000000..dea8bd05fed0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libanl.abilist
@@ -0,0 +1,5 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 gai_cancel F
+GLIBC_2.27 gai_error F
+GLIBC_2.27 gai_suspend F
+GLIBC_2.27 getaddrinfo_a F
diff --git a/sysdeps/unix/sysv/linux/riscv/libcrypt.abilist b/sysdeps/unix/sysv/linux/riscv/libcrypt.abilist
new file mode 100644
index 000000000000..2fe2263b9f16
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libcrypt.abilist
@@ -0,0 +1,8 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 crypt F
+GLIBC_2.27 crypt_r F
+GLIBC_2.27 encrypt F
+GLIBC_2.27 encrypt_r F
+GLIBC_2.27 fcrypt F
+GLIBC_2.27 setkey F
+GLIBC_2.27 setkey_r F
diff --git a/sysdeps/unix/sysv/linux/riscv/libdl.abilist b/sysdeps/unix/sysv/linux/riscv/libdl.abilist
new file mode 100644
index 000000000000..ea9b1e351971
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libdl.abilist
@@ -0,0 +1,10 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 dladdr F
+GLIBC_2.27 dladdr1 F
+GLIBC_2.27 dlclose F
+GLIBC_2.27 dlerror F
+GLIBC_2.27 dlinfo F
+GLIBC_2.27 dlmopen F
+GLIBC_2.27 dlopen F
+GLIBC_2.27 dlsym F
+GLIBC_2.27 dlvsym F
diff --git a/sysdeps/unix/sysv/linux/riscv/libm.abilist b/sysdeps/unix/sysv/linux/riscv/libm.abilist
new file mode 100644
index 000000000000..971af525865f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libm.abilist
@@ -0,0 +1,970 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __acos_finite F
+GLIBC_2.27 __acosf_finite F
+GLIBC_2.27 __acosh_finite F
+GLIBC_2.27 __acoshf_finite F
+GLIBC_2.27 __acoshl_finite F
+GLIBC_2.27 __acosl_finite F
+GLIBC_2.27 __asin_finite F
+GLIBC_2.27 __asinf_finite F
+GLIBC_2.27 __asinl_finite F
+GLIBC_2.27 __atan2_finite F
+GLIBC_2.27 __atan2f_finite F
+GLIBC_2.27 __atan2l_finite F
+GLIBC_2.27 __atanh_finite F
+GLIBC_2.27 __atanhf_finite F
+GLIBC_2.27 __atanhl_finite F
+GLIBC_2.27 __clog10 F
+GLIBC_2.27 __clog10f F
+GLIBC_2.27 __clog10l F
+GLIBC_2.27 __cosh_finite F
+GLIBC_2.27 __coshf_finite F
+GLIBC_2.27 __coshl_finite F
+GLIBC_2.27 __exp10_finite F
+GLIBC_2.27 __exp10f_finite F
+GLIBC_2.27 __exp10l_finite F
+GLIBC_2.27 __exp2_finite F
+GLIBC_2.27 __exp2f_finite F
+GLIBC_2.27 __exp2l_finite F
+GLIBC_2.27 __exp_finite F
+GLIBC_2.27 __expf_finite F
+GLIBC_2.27 __expl_finite F
+GLIBC_2.27 __finite F
+GLIBC_2.27 __finitef F
+GLIBC_2.27 __finitel F
+GLIBC_2.27 __fmod_finite F
+GLIBC_2.27 __fmodf_finite F
+GLIBC_2.27 __fmodl_finite F
+GLIBC_2.27 __fpclassify F
+GLIBC_2.27 __fpclassifyf F
+GLIBC_2.27 __fpclassifyl F
+GLIBC_2.27 __gamma_r_finite F
+GLIBC_2.27 __gammaf_r_finite F
+GLIBC_2.27 __gammal_r_finite F
+GLIBC_2.27 __hypot_finite F
+GLIBC_2.27 __hypotf_finite F
+GLIBC_2.27 __hypotl_finite F
+GLIBC_2.27 __iseqsig F
+GLIBC_2.27 __iseqsigf F
+GLIBC_2.27 __iseqsigl F
+GLIBC_2.27 __issignaling F
+GLIBC_2.27 __issignalingf F
+GLIBC_2.27 __issignalingl F
+GLIBC_2.27 __j0_finite F
+GLIBC_2.27 __j0f_finite F
+GLIBC_2.27 __j0l_finite F
+GLIBC_2.27 __j1_finite F
+GLIBC_2.27 __j1f_finite F
+GLIBC_2.27 __j1l_finite F
+GLIBC_2.27 __jn_finite F
+GLIBC_2.27 __jnf_finite F
+GLIBC_2.27 __jnl_finite F
+GLIBC_2.27 __lgamma_r_finite F
+GLIBC_2.27 __lgammaf_r_finite F
+GLIBC_2.27 __lgammal_r_finite F
+GLIBC_2.27 __log10_finite F
+GLIBC_2.27 __log10f_finite F
+GLIBC_2.27 __log10l_finite F
+GLIBC_2.27 __log2_finite F
+GLIBC_2.27 __log2f_finite F
+GLIBC_2.27 __log2l_finite F
+GLIBC_2.27 __log_finite F
+GLIBC_2.27 __logf_finite F
+GLIBC_2.27 __logl_finite F
+GLIBC_2.27 __pow_finite F
+GLIBC_2.27 __powf_finite F
+GLIBC_2.27 __powl_finite F
+GLIBC_2.27 __remainder_finite F
+GLIBC_2.27 __remainderf_finite F
+GLIBC_2.27 __remainderl_finite F
+GLIBC_2.27 __scalb_finite F
+GLIBC_2.27 __scalbf_finite F
+GLIBC_2.27 __scalbl_finite F
+GLIBC_2.27 __signbit F
+GLIBC_2.27 __signbitf F
+GLIBC_2.27 __signbitl F
+GLIBC_2.27 __signgam D 0x4
+GLIBC_2.27 __sinh_finite F
+GLIBC_2.27 __sinhf_finite F
+GLIBC_2.27 __sinhl_finite F
+GLIBC_2.27 __sqrt_finite F
+GLIBC_2.27 __sqrtf_finite F
+GLIBC_2.27 __sqrtl_finite F
+GLIBC_2.27 __y0_finite F
+GLIBC_2.27 __y0f_finite F
+GLIBC_2.27 __y0l_finite F
+GLIBC_2.27 __y1_finite F
+GLIBC_2.27 __y1f_finite F
+GLIBC_2.27 __y1l_finite F
+GLIBC_2.27 __yn_finite F
+GLIBC_2.27 __ynf_finite F
+GLIBC_2.27 __ynl_finite F
+GLIBC_2.27 acos F
+GLIBC_2.27 acosf F
+GLIBC_2.27 acosf128 F
+GLIBC_2.27 acosf32 F
+GLIBC_2.27 acosf32x F
+GLIBC_2.27 acosf64 F
+GLIBC_2.27 acosf64x F
+GLIBC_2.27 acosh F
+GLIBC_2.27 acoshf F
+GLIBC_2.27 acoshf128 F
+GLIBC_2.27 acoshf32 F
+GLIBC_2.27 acoshf32x F
+GLIBC_2.27 acoshf64 F
+GLIBC_2.27 acoshf64x F
+GLIBC_2.27 acoshl F
+GLIBC_2.27 acosl F
+GLIBC_2.27 asin F
+GLIBC_2.27 asinf F
+GLIBC_2.27 asinf128 F
+GLIBC_2.27 asinf32 F
+GLIBC_2.27 asinf32x F
+GLIBC_2.27 asinf64 F
+GLIBC_2.27 asinf64x F
+GLIBC_2.27 asinh F
+GLIBC_2.27 asinhf F
+GLIBC_2.27 asinhf128 F
+GLIBC_2.27 asinhf32 F
+GLIBC_2.27 asinhf32x F
+GLIBC_2.27 asinhf64 F
+GLIBC_2.27 asinhf64x F
+GLIBC_2.27 asinhl F
+GLIBC_2.27 asinl F
+GLIBC_2.27 atan F
+GLIBC_2.27 atan2 F
+GLIBC_2.27 atan2f F
+GLIBC_2.27 atan2f128 F
+GLIBC_2.27 atan2f32 F
+GLIBC_2.27 atan2f32x F
+GLIBC_2.27 atan2f64 F
+GLIBC_2.27 atan2f64x F
+GLIBC_2.27 atan2l F
+GLIBC_2.27 atanf F
+GLIBC_2.27 atanf128 F
+GLIBC_2.27 atanf32 F
+GLIBC_2.27 atanf32x F
+GLIBC_2.27 atanf64 F
+GLIBC_2.27 atanf64x F
+GLIBC_2.27 atanh F
+GLIBC_2.27 atanhf F
+GLIBC_2.27 atanhf128 F
+GLIBC_2.27 atanhf32 F
+GLIBC_2.27 atanhf32x F
+GLIBC_2.27 atanhf64 F
+GLIBC_2.27 atanhf64x F
+GLIBC_2.27 atanhl F
+GLIBC_2.27 atanl F
+GLIBC_2.27 cabs F
+GLIBC_2.27 cabsf F
+GLIBC_2.27 cabsf128 F
+GLIBC_2.27 cabsf32 F
+GLIBC_2.27 cabsf32x F
+GLIBC_2.27 cabsf64 F
+GLIBC_2.27 cabsf64x F
+GLIBC_2.27 cabsl F
+GLIBC_2.27 cacos F
+GLIBC_2.27 cacosf F
+GLIBC_2.27 cacosf128 F
+GLIBC_2.27 cacosf32 F
+GLIBC_2.27 cacosf32x F
+GLIBC_2.27 cacosf64 F
+GLIBC_2.27 cacosf64x F
+GLIBC_2.27 cacosh F
+GLIBC_2.27 cacoshf F
+GLIBC_2.27 cacoshf128 F
+GLIBC_2.27 cacoshf32 F
+GLIBC_2.27 cacoshf32x F
+GLIBC_2.27 cacoshf64 F
+GLIBC_2.27 cacoshf64x F
+GLIBC_2.27 cacoshl F
+GLIBC_2.27 cacosl F
+GLIBC_2.27 canonicalize F
+GLIBC_2.27 canonicalizef F
+GLIBC_2.27 canonicalizef128 F
+GLIBC_2.27 canonicalizef32 F
+GLIBC_2.27 canonicalizef32x F
+GLIBC_2.27 canonicalizef64 F
+GLIBC_2.27 canonicalizef64x F
+GLIBC_2.27 canonicalizel F
+GLIBC_2.27 carg F
+GLIBC_2.27 cargf F
+GLIBC_2.27 cargf128 F
+GLIBC_2.27 cargf32 F
+GLIBC_2.27 cargf32x F
+GLIBC_2.27 cargf64 F
+GLIBC_2.27 cargf64x F
+GLIBC_2.27 cargl F
+GLIBC_2.27 casin F
+GLIBC_2.27 casinf F
+GLIBC_2.27 casinf128 F
+GLIBC_2.27 casinf32 F
+GLIBC_2.27 casinf32x F
+GLIBC_2.27 casinf64 F
+GLIBC_2.27 casinf64x F
+GLIBC_2.27 casinh F
+GLIBC_2.27 casinhf F
+GLIBC_2.27 casinhf128 F
+GLIBC_2.27 casinhf32 F
+GLIBC_2.27 casinhf32x F
+GLIBC_2.27 casinhf64 F
+GLIBC_2.27 casinhf64x F
+GLIBC_2.27 casinhl F
+GLIBC_2.27 casinl F
+GLIBC_2.27 catan F
+GLIBC_2.27 catanf F
+GLIBC_2.27 catanf128 F
+GLIBC_2.27 catanf32 F
+GLIBC_2.27 catanf32x F
+GLIBC_2.27 catanf64 F
+GLIBC_2.27 catanf64x F
+GLIBC_2.27 catanh F
+GLIBC_2.27 catanhf F
+GLIBC_2.27 catanhf128 F
+GLIBC_2.27 catanhf32 F
+GLIBC_2.27 catanhf32x F
+GLIBC_2.27 catanhf64 F
+GLIBC_2.27 catanhf64x F
+GLIBC_2.27 catanhl F
+GLIBC_2.27 catanl F
+GLIBC_2.27 cbrt F
+GLIBC_2.27 cbrtf F
+GLIBC_2.27 cbrtf128 F
+GLIBC_2.27 cbrtf32 F
+GLIBC_2.27 cbrtf32x F
+GLIBC_2.27 cbrtf64 F
+GLIBC_2.27 cbrtf64x F
+GLIBC_2.27 cbrtl F
+GLIBC_2.27 ccos F
+GLIBC_2.27 ccosf F
+GLIBC_2.27 ccosf128 F
+GLIBC_2.27 ccosf32 F
+GLIBC_2.27 ccosf32x F
+GLIBC_2.27 ccosf64 F
+GLIBC_2.27 ccosf64x F
+GLIBC_2.27 ccosh F
+GLIBC_2.27 ccoshf F
+GLIBC_2.27 ccoshf128 F
+GLIBC_2.27 ccoshf32 F
+GLIBC_2.27 ccoshf32x F
+GLIBC_2.27 ccoshf64 F
+GLIBC_2.27 ccoshf64x F
+GLIBC_2.27 ccoshl F
+GLIBC_2.27 ccosl F
+GLIBC_2.27 ceil F
+GLIBC_2.27 ceilf F
+GLIBC_2.27 ceilf128 F
+GLIBC_2.27 ceilf32 F
+GLIBC_2.27 ceilf32x F
+GLIBC_2.27 ceilf64 F
+GLIBC_2.27 ceilf64x F
+GLIBC_2.27 ceill F
+GLIBC_2.27 cexp F
+GLIBC_2.27 cexpf F
+GLIBC_2.27 cexpf128 F
+GLIBC_2.27 cexpf32 F
+GLIBC_2.27 cexpf32x F
+GLIBC_2.27 cexpf64 F
+GLIBC_2.27 cexpf64x F
+GLIBC_2.27 cexpl F
+GLIBC_2.27 cimag F
+GLIBC_2.27 cimagf F
+GLIBC_2.27 cimagf128 F
+GLIBC_2.27 cimagf32 F
+GLIBC_2.27 cimagf32x F
+GLIBC_2.27 cimagf64 F
+GLIBC_2.27 cimagf64x F
+GLIBC_2.27 cimagl F
+GLIBC_2.27 clog F
+GLIBC_2.27 clog10 F
+GLIBC_2.27 clog10f F
+GLIBC_2.27 clog10f128 F
+GLIBC_2.27 clog10f32 F
+GLIBC_2.27 clog10f32x F
+GLIBC_2.27 clog10f64 F
+GLIBC_2.27 clog10f64x F
+GLIBC_2.27 clog10l F
+GLIBC_2.27 clogf F
+GLIBC_2.27 clogf128 F
+GLIBC_2.27 clogf32 F
+GLIBC_2.27 clogf32x F
+GLIBC_2.27 clogf64 F
+GLIBC_2.27 clogf64x F
+GLIBC_2.27 clogl F
+GLIBC_2.27 conj F
+GLIBC_2.27 conjf F
+GLIBC_2.27 conjf128 F
+GLIBC_2.27 conjf32 F
+GLIBC_2.27 conjf32x F
+GLIBC_2.27 conjf64 F
+GLIBC_2.27 conjf64x F
+GLIBC_2.27 conjl F
+GLIBC_2.27 copysign F
+GLIBC_2.27 copysignf F
+GLIBC_2.27 copysignf128 F
+GLIBC_2.27 copysignf32 F
+GLIBC_2.27 copysignf32x F
+GLIBC_2.27 copysignf64 F
+GLIBC_2.27 copysignf64x F
+GLIBC_2.27 copysignl F
+GLIBC_2.27 cos F
+GLIBC_2.27 cosf F
+GLIBC_2.27 cosf128 F
+GLIBC_2.27 cosf32 F
+GLIBC_2.27 cosf32x F
+GLIBC_2.27 cosf64 F
+GLIBC_2.27 cosf64x F
+GLIBC_2.27 cosh F
+GLIBC_2.27 coshf F
+GLIBC_2.27 coshf128 F
+GLIBC_2.27 coshf32 F
+GLIBC_2.27 coshf32x F
+GLIBC_2.27 coshf64 F
+GLIBC_2.27 coshf64x F
+GLIBC_2.27 coshl F
+GLIBC_2.27 cosl F
+GLIBC_2.27 cpow F
+GLIBC_2.27 cpowf F
+GLIBC_2.27 cpowf128 F
+GLIBC_2.27 cpowf32 F
+GLIBC_2.27 cpowf32x F
+GLIBC_2.27 cpowf64 F
+GLIBC_2.27 cpowf64x F
+GLIBC_2.27 cpowl F
+GLIBC_2.27 cproj F
+GLIBC_2.27 cprojf F
+GLIBC_2.27 cprojf128 F
+GLIBC_2.27 cprojf32 F
+GLIBC_2.27 cprojf32x F
+GLIBC_2.27 cprojf64 F
+GLIBC_2.27 cprojf64x F
+GLIBC_2.27 cprojl F
+GLIBC_2.27 creal F
+GLIBC_2.27 crealf F
+GLIBC_2.27 crealf128 F
+GLIBC_2.27 crealf32 F
+GLIBC_2.27 crealf32x F
+GLIBC_2.27 crealf64 F
+GLIBC_2.27 crealf64x F
+GLIBC_2.27 creall F
+GLIBC_2.27 csin F
+GLIBC_2.27 csinf F
+GLIBC_2.27 csinf128 F
+GLIBC_2.27 csinf32 F
+GLIBC_2.27 csinf32x F
+GLIBC_2.27 csinf64 F
+GLIBC_2.27 csinf64x F
+GLIBC_2.27 csinh F
+GLIBC_2.27 csinhf F
+GLIBC_2.27 csinhf128 F
+GLIBC_2.27 csinhf32 F
+GLIBC_2.27 csinhf32x F
+GLIBC_2.27 csinhf64 F
+GLIBC_2.27 csinhf64x F
+GLIBC_2.27 csinhl F
+GLIBC_2.27 csinl F
+GLIBC_2.27 csqrt F
+GLIBC_2.27 csqrtf F
+GLIBC_2.27 csqrtf128 F
+GLIBC_2.27 csqrtf32 F
+GLIBC_2.27 csqrtf32x F
+GLIBC_2.27 csqrtf64 F
+GLIBC_2.27 csqrtf64x F
+GLIBC_2.27 csqrtl F
+GLIBC_2.27 ctan F
+GLIBC_2.27 ctanf F
+GLIBC_2.27 ctanf128 F
+GLIBC_2.27 ctanf32 F
+GLIBC_2.27 ctanf32x F
+GLIBC_2.27 ctanf64 F
+GLIBC_2.27 ctanf64x F
+GLIBC_2.27 ctanh F
+GLIBC_2.27 ctanhf F
+GLIBC_2.27 ctanhf128 F
+GLIBC_2.27 ctanhf32 F
+GLIBC_2.27 ctanhf32x F
+GLIBC_2.27 ctanhf64 F
+GLIBC_2.27 ctanhf64x F
+GLIBC_2.27 ctanhl F
+GLIBC_2.27 ctanl F
+GLIBC_2.27 drem F
+GLIBC_2.27 dremf F
+GLIBC_2.27 dreml F
+GLIBC_2.27 erf F
+GLIBC_2.27 erfc F
+GLIBC_2.27 erfcf F
+GLIBC_2.27 erfcf128 F
+GLIBC_2.27 erfcf32 F
+GLIBC_2.27 erfcf32x F
+GLIBC_2.27 erfcf64 F
+GLIBC_2.27 erfcf64x F
+GLIBC_2.27 erfcl F
+GLIBC_2.27 erff F
+GLIBC_2.27 erff128 F
+GLIBC_2.27 erff32 F
+GLIBC_2.27 erff32x F
+GLIBC_2.27 erff64 F
+GLIBC_2.27 erff64x F
+GLIBC_2.27 erfl F
+GLIBC_2.27 exp F
+GLIBC_2.27 exp10 F
+GLIBC_2.27 exp10f F
+GLIBC_2.27 exp10f128 F
+GLIBC_2.27 exp10f32 F
+GLIBC_2.27 exp10f32x F
+GLIBC_2.27 exp10f64 F
+GLIBC_2.27 exp10f64x F
+GLIBC_2.27 exp10l F
+GLIBC_2.27 exp2 F
+GLIBC_2.27 exp2f F
+GLIBC_2.27 exp2f128 F
+GLIBC_2.27 exp2f32 F
+GLIBC_2.27 exp2f32x F
+GLIBC_2.27 exp2f64 F
+GLIBC_2.27 exp2f64x F
+GLIBC_2.27 exp2l F
+GLIBC_2.27 expf F
+GLIBC_2.27 expf128 F
+GLIBC_2.27 expf32 F
+GLIBC_2.27 expf32x F
+GLIBC_2.27 expf64 F
+GLIBC_2.27 expf64x F
+GLIBC_2.27 expl F
+GLIBC_2.27 expm1 F
+GLIBC_2.27 expm1f F
+GLIBC_2.27 expm1f128 F
+GLIBC_2.27 expm1f32 F
+GLIBC_2.27 expm1f32x F
+GLIBC_2.27 expm1f64 F
+GLIBC_2.27 expm1f64x F
+GLIBC_2.27 expm1l F
+GLIBC_2.27 fabs F
+GLIBC_2.27 fabsf F
+GLIBC_2.27 fabsf128 F
+GLIBC_2.27 fabsf32 F
+GLIBC_2.27 fabsf32x F
+GLIBC_2.27 fabsf64 F
+GLIBC_2.27 fabsf64x F
+GLIBC_2.27 fabsl F
+GLIBC_2.27 fdim F
+GLIBC_2.27 fdimf F
+GLIBC_2.27 fdimf128 F
+GLIBC_2.27 fdimf32 F
+GLIBC_2.27 fdimf32x F
+GLIBC_2.27 fdimf64 F
+GLIBC_2.27 fdimf64x F
+GLIBC_2.27 fdiml F
+GLIBC_2.27 feclearexcept F
+GLIBC_2.27 fedisableexcept F
+GLIBC_2.27 feenableexcept F
+GLIBC_2.27 fegetenv F
+GLIBC_2.27 fegetexcept F
+GLIBC_2.27 fegetexceptflag F
+GLIBC_2.27 fegetmode F
+GLIBC_2.27 fegetround F
+GLIBC_2.27 feholdexcept F
+GLIBC_2.27 feraiseexcept F
+GLIBC_2.27 fesetenv F
+GLIBC_2.27 fesetexcept F
+GLIBC_2.27 fesetexceptflag F
+GLIBC_2.27 fesetmode F
+GLIBC_2.27 fesetround F
+GLIBC_2.27 fetestexcept F
+GLIBC_2.27 fetestexceptflag F
+GLIBC_2.27 feupdateenv F
+GLIBC_2.27 finite F
+GLIBC_2.27 finitef F
+GLIBC_2.27 finitel F
+GLIBC_2.27 floor F
+GLIBC_2.27 floorf F
+GLIBC_2.27 floorf128 F
+GLIBC_2.27 floorf32 F
+GLIBC_2.27 floorf32x F
+GLIBC_2.27 floorf64 F
+GLIBC_2.27 floorf64x F
+GLIBC_2.27 floorl F
+GLIBC_2.27 fma F
+GLIBC_2.27 fmaf F
+GLIBC_2.27 fmaf128 F
+GLIBC_2.27 fmaf32 F
+GLIBC_2.27 fmaf32x F
+GLIBC_2.27 fmaf64 F
+GLIBC_2.27 fmaf64x F
+GLIBC_2.27 fmal F
+GLIBC_2.27 fmax F
+GLIBC_2.27 fmaxf F
+GLIBC_2.27 fmaxf128 F
+GLIBC_2.27 fmaxf32 F
+GLIBC_2.27 fmaxf32x F
+GLIBC_2.27 fmaxf64 F
+GLIBC_2.27 fmaxf64x F
+GLIBC_2.27 fmaxl F
+GLIBC_2.27 fmaxmag F
+GLIBC_2.27 fmaxmagf F
+GLIBC_2.27 fmaxmagf128 F
+GLIBC_2.27 fmaxmagf32 F
+GLIBC_2.27 fmaxmagf32x F
+GLIBC_2.27 fmaxmagf64 F
+GLIBC_2.27 fmaxmagf64x F
+GLIBC_2.27 fmaxmagl F
+GLIBC_2.27 fmin F
+GLIBC_2.27 fminf F
+GLIBC_2.27 fminf128 F
+GLIBC_2.27 fminf32 F
+GLIBC_2.27 fminf32x F
+GLIBC_2.27 fminf64 F
+GLIBC_2.27 fminf64x F
+GLIBC_2.27 fminl F
+GLIBC_2.27 fminmag F
+GLIBC_2.27 fminmagf F
+GLIBC_2.27 fminmagf128 F
+GLIBC_2.27 fminmagf32 F
+GLIBC_2.27 fminmagf32x F
+GLIBC_2.27 fminmagf64 F
+GLIBC_2.27 fminmagf64x F
+GLIBC_2.27 fminmagl F
+GLIBC_2.27 fmod F
+GLIBC_2.27 fmodf F
+GLIBC_2.27 fmodf128 F
+GLIBC_2.27 fmodf32 F
+GLIBC_2.27 fmodf32x F
+GLIBC_2.27 fmodf64 F
+GLIBC_2.27 fmodf64x F
+GLIBC_2.27 fmodl F
+GLIBC_2.27 frexp F
+GLIBC_2.27 frexpf F
+GLIBC_2.27 frexpf128 F
+GLIBC_2.27 frexpf32 F
+GLIBC_2.27 frexpf32x F
+GLIBC_2.27 frexpf64 F
+GLIBC_2.27 frexpf64x F
+GLIBC_2.27 frexpl F
+GLIBC_2.27 fromfp F
+GLIBC_2.27 fromfpf F
+GLIBC_2.27 fromfpf128 F
+GLIBC_2.27 fromfpf32 F
+GLIBC_2.27 fromfpf32x F
+GLIBC_2.27 fromfpf64 F
+GLIBC_2.27 fromfpf64x F
+GLIBC_2.27 fromfpl F
+GLIBC_2.27 fromfpx F
+GLIBC_2.27 fromfpxf F
+GLIBC_2.27 fromfpxf128 F
+GLIBC_2.27 fromfpxf32 F
+GLIBC_2.27 fromfpxf32x F
+GLIBC_2.27 fromfpxf64 F
+GLIBC_2.27 fromfpxf64x F
+GLIBC_2.27 fromfpxl F
+GLIBC_2.27 gamma F
+GLIBC_2.27 gammaf F
+GLIBC_2.27 gammal F
+GLIBC_2.27 getpayload F
+GLIBC_2.27 getpayloadf F
+GLIBC_2.27 getpayloadf128 F
+GLIBC_2.27 getpayloadf32 F
+GLIBC_2.27 getpayloadf32x F
+GLIBC_2.27 getpayloadf64 F
+GLIBC_2.27 getpayloadf64x F
+GLIBC_2.27 getpayloadl F
+GLIBC_2.27 hypot F
+GLIBC_2.27 hypotf F
+GLIBC_2.27 hypotf128 F
+GLIBC_2.27 hypotf32 F
+GLIBC_2.27 hypotf32x F
+GLIBC_2.27 hypotf64 F
+GLIBC_2.27 hypotf64x F
+GLIBC_2.27 hypotl F
+GLIBC_2.27 ilogb F
+GLIBC_2.27 ilogbf F
+GLIBC_2.27 ilogbf128 F
+GLIBC_2.27 ilogbf32 F
+GLIBC_2.27 ilogbf32x F
+GLIBC_2.27 ilogbf64 F
+GLIBC_2.27 ilogbf64x F
+GLIBC_2.27 ilogbl F
+GLIBC_2.27 j0 F
+GLIBC_2.27 j0f F
+GLIBC_2.27 j0f128 F
+GLIBC_2.27 j0f32 F
+GLIBC_2.27 j0f32x F
+GLIBC_2.27 j0f64 F
+GLIBC_2.27 j0f64x F
+GLIBC_2.27 j0l F
+GLIBC_2.27 j1 F
+GLIBC_2.27 j1f F
+GLIBC_2.27 j1f128 F
+GLIBC_2.27 j1f32 F
+GLIBC_2.27 j1f32x F
+GLIBC_2.27 j1f64 F
+GLIBC_2.27 j1f64x F
+GLIBC_2.27 j1l F
+GLIBC_2.27 jn F
+GLIBC_2.27 jnf F
+GLIBC_2.27 jnf128 F
+GLIBC_2.27 jnf32 F
+GLIBC_2.27 jnf32x F
+GLIBC_2.27 jnf64 F
+GLIBC_2.27 jnf64x F
+GLIBC_2.27 jnl F
+GLIBC_2.27 ldexp F
+GLIBC_2.27 ldexpf F
+GLIBC_2.27 ldexpf128 F
+GLIBC_2.27 ldexpf32 F
+GLIBC_2.27 ldexpf32x F
+GLIBC_2.27 ldexpf64 F
+GLIBC_2.27 ldexpf64x F
+GLIBC_2.27 ldexpl F
+GLIBC_2.27 lgamma F
+GLIBC_2.27 lgamma_r F
+GLIBC_2.27 lgammaf F
+GLIBC_2.27 lgammaf128 F
+GLIBC_2.27 lgammaf128_r F
+GLIBC_2.27 lgammaf32 F
+GLIBC_2.27 lgammaf32_r F
+GLIBC_2.27 lgammaf32x F
+GLIBC_2.27 lgammaf32x_r F
+GLIBC_2.27 lgammaf64 F
+GLIBC_2.27 lgammaf64_r F
+GLIBC_2.27 lgammaf64x F
+GLIBC_2.27 lgammaf64x_r F
+GLIBC_2.27 lgammaf_r F
+GLIBC_2.27 lgammal F
+GLIBC_2.27 lgammal_r F
+GLIBC_2.27 llogb F
+GLIBC_2.27 llogbf F
+GLIBC_2.27 llogbf128 F
+GLIBC_2.27 llogbf32 F
+GLIBC_2.27 llogbf32x F
+GLIBC_2.27 llogbf64 F
+GLIBC_2.27 llogbf64x F
+GLIBC_2.27 llogbl F
+GLIBC_2.27 llrint F
+GLIBC_2.27 llrintf F
+GLIBC_2.27 llrintf128 F
+GLIBC_2.27 llrintf32 F
+GLIBC_2.27 llrintf32x F
+GLIBC_2.27 llrintf64 F
+GLIBC_2.27 llrintf64x F
+GLIBC_2.27 llrintl F
+GLIBC_2.27 llround F
+GLIBC_2.27 llroundf F
+GLIBC_2.27 llroundf128 F
+GLIBC_2.27 llroundf32 F
+GLIBC_2.27 llroundf32x F
+GLIBC_2.27 llroundf64 F
+GLIBC_2.27 llroundf64x F
+GLIBC_2.27 llroundl F
+GLIBC_2.27 log F
+GLIBC_2.27 log10 F
+GLIBC_2.27 log10f F
+GLIBC_2.27 log10f128 F
+GLIBC_2.27 log10f32 F
+GLIBC_2.27 log10f32x F
+GLIBC_2.27 log10f64 F
+GLIBC_2.27 log10f64x F
+GLIBC_2.27 log10l F
+GLIBC_2.27 log1p F
+GLIBC_2.27 log1pf F
+GLIBC_2.27 log1pf128 F
+GLIBC_2.27 log1pf32 F
+GLIBC_2.27 log1pf32x F
+GLIBC_2.27 log1pf64 F
+GLIBC_2.27 log1pf64x F
+GLIBC_2.27 log1pl F
+GLIBC_2.27 log2 F
+GLIBC_2.27 log2f F
+GLIBC_2.27 log2f128 F
+GLIBC_2.27 log2f32 F
+GLIBC_2.27 log2f32x F
+GLIBC_2.27 log2f64 F
+GLIBC_2.27 log2f64x F
+GLIBC_2.27 log2l F
+GLIBC_2.27 logb F
+GLIBC_2.27 logbf F
+GLIBC_2.27 logbf128 F
+GLIBC_2.27 logbf32 F
+GLIBC_2.27 logbf32x F
+GLIBC_2.27 logbf64 F
+GLIBC_2.27 logbf64x F
+GLIBC_2.27 logbl F
+GLIBC_2.27 logf F
+GLIBC_2.27 logf128 F
+GLIBC_2.27 logf32 F
+GLIBC_2.27 logf32x F
+GLIBC_2.27 logf64 F
+GLIBC_2.27 logf64x F
+GLIBC_2.27 logl F
+GLIBC_2.27 lrint F
+GLIBC_2.27 lrintf F
+GLIBC_2.27 lrintf128 F
+GLIBC_2.27 lrintf32 F
+GLIBC_2.27 lrintf32x F
+GLIBC_2.27 lrintf64 F
+GLIBC_2.27 lrintf64x F
+GLIBC_2.27 lrintl F
+GLIBC_2.27 lround F
+GLIBC_2.27 lroundf F
+GLIBC_2.27 lroundf128 F
+GLIBC_2.27 lroundf32 F
+GLIBC_2.27 lroundf32x F
+GLIBC_2.27 lroundf64 F
+GLIBC_2.27 lroundf64x F
+GLIBC_2.27 lroundl F
+GLIBC_2.27 modf F
+GLIBC_2.27 modff F
+GLIBC_2.27 modff128 F
+GLIBC_2.27 modff32 F
+GLIBC_2.27 modff32x F
+GLIBC_2.27 modff64 F
+GLIBC_2.27 modff64x F
+GLIBC_2.27 modfl F
+GLIBC_2.27 nan F
+GLIBC_2.27 nanf F
+GLIBC_2.27 nanf128 F
+GLIBC_2.27 nanf32 F
+GLIBC_2.27 nanf32x F
+GLIBC_2.27 nanf64 F
+GLIBC_2.27 nanf64x F
+GLIBC_2.27 nanl F
+GLIBC_2.27 nearbyint F
+GLIBC_2.27 nearbyintf F
+GLIBC_2.27 nearbyintf128 F
+GLIBC_2.27 nearbyintf32 F
+GLIBC_2.27 nearbyintf32x F
+GLIBC_2.27 nearbyintf64 F
+GLIBC_2.27 nearbyintf64x F
+GLIBC_2.27 nearbyintl F
+GLIBC_2.27 nextafter F
+GLIBC_2.27 nextafterf F
+GLIBC_2.27 nextafterf128 F
+GLIBC_2.27 nextafterf32 F
+GLIBC_2.27 nextafterf32x F
+GLIBC_2.27 nextafterf64 F
+GLIBC_2.27 nextafterf64x F
+GLIBC_2.27 nextafterl F
+GLIBC_2.27 nextdown F
+GLIBC_2.27 nextdownf F
+GLIBC_2.27 nextdownf128 F
+GLIBC_2.27 nextdownf32 F
+GLIBC_2.27 nextdownf32x F
+GLIBC_2.27 nextdownf64 F
+GLIBC_2.27 nextdownf64x F
+GLIBC_2.27 nextdownl F
+GLIBC_2.27 nexttoward F
+GLIBC_2.27 nexttowardf F
+GLIBC_2.27 nexttowardl F
+GLIBC_2.27 nextup F
+GLIBC_2.27 nextupf F
+GLIBC_2.27 nextupf128 F
+GLIBC_2.27 nextupf32 F
+GLIBC_2.27 nextupf32x F
+GLIBC_2.27 nextupf64 F
+GLIBC_2.27 nextupf64x F
+GLIBC_2.27 nextupl F
+GLIBC_2.27 pow F
+GLIBC_2.27 powf F
+GLIBC_2.27 powf128 F
+GLIBC_2.27 powf32 F
+GLIBC_2.27 powf32x F
+GLIBC_2.27 powf64 F
+GLIBC_2.27 powf64x F
+GLIBC_2.27 powl F
+GLIBC_2.27 remainder F
+GLIBC_2.27 remainderf F
+GLIBC_2.27 remainderf128 F
+GLIBC_2.27 remainderf32 F
+GLIBC_2.27 remainderf32x F
+GLIBC_2.27 remainderf64 F
+GLIBC_2.27 remainderf64x F
+GLIBC_2.27 remainderl F
+GLIBC_2.27 remquo F
+GLIBC_2.27 remquof F
+GLIBC_2.27 remquof128 F
+GLIBC_2.27 remquof32 F
+GLIBC_2.27 remquof32x F
+GLIBC_2.27 remquof64 F
+GLIBC_2.27 remquof64x F
+GLIBC_2.27 remquol F
+GLIBC_2.27 rint F
+GLIBC_2.27 rintf F
+GLIBC_2.27 rintf128 F
+GLIBC_2.27 rintf32 F
+GLIBC_2.27 rintf32x F
+GLIBC_2.27 rintf64 F
+GLIBC_2.27 rintf64x F
+GLIBC_2.27 rintl F
+GLIBC_2.27 round F
+GLIBC_2.27 roundeven F
+GLIBC_2.27 roundevenf F
+GLIBC_2.27 roundevenf128 F
+GLIBC_2.27 roundevenf32 F
+GLIBC_2.27 roundevenf32x F
+GLIBC_2.27 roundevenf64 F
+GLIBC_2.27 roundevenf64x F
+GLIBC_2.27 roundevenl F
+GLIBC_2.27 roundf F
+GLIBC_2.27 roundf128 F
+GLIBC_2.27 roundf32 F
+GLIBC_2.27 roundf32x F
+GLIBC_2.27 roundf64 F
+GLIBC_2.27 roundf64x F
+GLIBC_2.27 roundl F
+GLIBC_2.27 scalb F
+GLIBC_2.27 scalbf F
+GLIBC_2.27 scalbl F
+GLIBC_2.27 scalbln F
+GLIBC_2.27 scalblnf F
+GLIBC_2.27 scalblnf128 F
+GLIBC_2.27 scalblnf32 F
+GLIBC_2.27 scalblnf32x F
+GLIBC_2.27 scalblnf64 F
+GLIBC_2.27 scalblnf64x F
+GLIBC_2.27 scalblnl F
+GLIBC_2.27 scalbn F
+GLIBC_2.27 scalbnf F
+GLIBC_2.27 scalbnf128 F
+GLIBC_2.27 scalbnf32 F
+GLIBC_2.27 scalbnf32x F
+GLIBC_2.27 scalbnf64 F
+GLIBC_2.27 scalbnf64x F
+GLIBC_2.27 scalbnl F
+GLIBC_2.27 setpayload F
+GLIBC_2.27 setpayloadf F
+GLIBC_2.27 setpayloadf128 F
+GLIBC_2.27 setpayloadf32 F
+GLIBC_2.27 setpayloadf32x F
+GLIBC_2.27 setpayloadf64 F
+GLIBC_2.27 setpayloadf64x F
+GLIBC_2.27 setpayloadl F
+GLIBC_2.27 setpayloadsig F
+GLIBC_2.27 setpayloadsigf F
+GLIBC_2.27 setpayloadsigf128 F
+GLIBC_2.27 setpayloadsigf32 F
+GLIBC_2.27 setpayloadsigf32x F
+GLIBC_2.27 setpayloadsigf64 F
+GLIBC_2.27 setpayloadsigf64x F
+GLIBC_2.27 setpayloadsigl F
+GLIBC_2.27 signgam D 0x4
+GLIBC_2.27 significand F
+GLIBC_2.27 significandf F
+GLIBC_2.27 significandl F
+GLIBC_2.27 sin F
+GLIBC_2.27 sincos F
+GLIBC_2.27 sincosf F
+GLIBC_2.27 sincosf128 F
+GLIBC_2.27 sincosf32 F
+GLIBC_2.27 sincosf32x F
+GLIBC_2.27 sincosf64 F
+GLIBC_2.27 sincosf64x F
+GLIBC_2.27 sincosl F
+GLIBC_2.27 sinf F
+GLIBC_2.27 sinf128 F
+GLIBC_2.27 sinf32 F
+GLIBC_2.27 sinf32x F
+GLIBC_2.27 sinf64 F
+GLIBC_2.27 sinf64x F
+GLIBC_2.27 sinh F
+GLIBC_2.27 sinhf F
+GLIBC_2.27 sinhf128 F
+GLIBC_2.27 sinhf32 F
+GLIBC_2.27 sinhf32x F
+GLIBC_2.27 sinhf64 F
+GLIBC_2.27 sinhf64x F
+GLIBC_2.27 sinhl F
+GLIBC_2.27 sinl F
+GLIBC_2.27 sqrt F
+GLIBC_2.27 sqrtf F
+GLIBC_2.27 sqrtf128 F
+GLIBC_2.27 sqrtf32 F
+GLIBC_2.27 sqrtf32x F
+GLIBC_2.27 sqrtf64 F
+GLIBC_2.27 sqrtf64x F
+GLIBC_2.27 sqrtl F
+GLIBC_2.27 tan F
+GLIBC_2.27 tanf F
+GLIBC_2.27 tanf128 F
+GLIBC_2.27 tanf32 F
+GLIBC_2.27 tanf32x F
+GLIBC_2.27 tanf64 F
+GLIBC_2.27 tanf64x F
+GLIBC_2.27 tanh F
+GLIBC_2.27 tanhf F
+GLIBC_2.27 tanhf128 F
+GLIBC_2.27 tanhf32 F
+GLIBC_2.27 tanhf32x F
+GLIBC_2.27 tanhf64 F
+GLIBC_2.27 tanhf64x F
+GLIBC_2.27 tanhl F
+GLIBC_2.27 tanl F
+GLIBC_2.27 tgamma F
+GLIBC_2.27 tgammaf F
+GLIBC_2.27 tgammaf128 F
+GLIBC_2.27 tgammaf32 F
+GLIBC_2.27 tgammaf32x F
+GLIBC_2.27 tgammaf64 F
+GLIBC_2.27 tgammaf64x F
+GLIBC_2.27 tgammal F
+GLIBC_2.27 totalorder F
+GLIBC_2.27 totalorderf F
+GLIBC_2.27 totalorderf128 F
+GLIBC_2.27 totalorderf32 F
+GLIBC_2.27 totalorderf32x F
+GLIBC_2.27 totalorderf64 F
+GLIBC_2.27 totalorderf64x F
+GLIBC_2.27 totalorderl F
+GLIBC_2.27 totalordermag F
+GLIBC_2.27 totalordermagf F
+GLIBC_2.27 totalordermagf128 F
+GLIBC_2.27 totalordermagf32 F
+GLIBC_2.27 totalordermagf32x F
+GLIBC_2.27 totalordermagf64 F
+GLIBC_2.27 totalordermagf64x F
+GLIBC_2.27 totalordermagl F
+GLIBC_2.27 trunc F
+GLIBC_2.27 truncf F
+GLIBC_2.27 truncf128 F
+GLIBC_2.27 truncf32 F
+GLIBC_2.27 truncf32x F
+GLIBC_2.27 truncf64 F
+GLIBC_2.27 truncf64x F
+GLIBC_2.27 truncl F
+GLIBC_2.27 ufromfp F
+GLIBC_2.27 ufromfpf F
+GLIBC_2.27 ufromfpf128 F
+GLIBC_2.27 ufromfpf32 F
+GLIBC_2.27 ufromfpf32x F
+GLIBC_2.27 ufromfpf64 F
+GLIBC_2.27 ufromfpf64x F
+GLIBC_2.27 ufromfpl F
+GLIBC_2.27 ufromfpx F
+GLIBC_2.27 ufromfpxf F
+GLIBC_2.27 ufromfpxf128 F
+GLIBC_2.27 ufromfpxf32 F
+GLIBC_2.27 ufromfpxf32x F
+GLIBC_2.27 ufromfpxf64 F
+GLIBC_2.27 ufromfpxf64x F
+GLIBC_2.27 ufromfpxl F
+GLIBC_2.27 y0 F
+GLIBC_2.27 y0f F
+GLIBC_2.27 y0f128 F
+GLIBC_2.27 y0f32 F
+GLIBC_2.27 y0f32x F
+GLIBC_2.27 y0f64 F
+GLIBC_2.27 y0f64x F
+GLIBC_2.27 y0l F
+GLIBC_2.27 y1 F
+GLIBC_2.27 y1f F
+GLIBC_2.27 y1f128 F
+GLIBC_2.27 y1f32 F
+GLIBC_2.27 y1f32x F
+GLIBC_2.27 y1f64 F
+GLIBC_2.27 y1f64x F
+GLIBC_2.27 y1l F
+GLIBC_2.27 yn F
+GLIBC_2.27 ynf F
+GLIBC_2.27 ynf128 F
+GLIBC_2.27 ynf32 F
+GLIBC_2.27 ynf32x F
+GLIBC_2.27 ynf64 F
+GLIBC_2.27 ynf64x F
+GLIBC_2.27 ynl F
diff --git a/sysdeps/unix/sysv/linux/riscv/libnsl.abilist b/sysdeps/unix/sysv/linux/riscv/libnsl.abilist
new file mode 100644
index 000000000000..b7a0f82a9efb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libnsl.abilist
@@ -0,0 +1,121 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __free_fdresult F
+GLIBC_2.27 __nis_default_access F
+GLIBC_2.27 __nis_default_group F
+GLIBC_2.27 __nis_default_owner F
+GLIBC_2.27 __nis_default_ttl F
+GLIBC_2.27 __nis_finddirectory F
+GLIBC_2.27 __nisbind_connect F
+GLIBC_2.27 __nisbind_create F
+GLIBC_2.27 __nisbind_destroy F
+GLIBC_2.27 __nisbind_next F
+GLIBC_2.27 __yp_check F
+GLIBC_2.27 nis_add F
+GLIBC_2.27 nis_add_entry F
+GLIBC_2.27 nis_addmember F
+GLIBC_2.27 nis_checkpoint F
+GLIBC_2.27 nis_clone_directory F
+GLIBC_2.27 nis_clone_object F
+GLIBC_2.27 nis_clone_result F
+GLIBC_2.27 nis_creategroup F
+GLIBC_2.27 nis_destroy_object F
+GLIBC_2.27 nis_destroygroup F
+GLIBC_2.27 nis_dir_cmp F
+GLIBC_2.27 nis_domain_of F
+GLIBC_2.27 nis_domain_of_r F
+GLIBC_2.27 nis_first_entry F
+GLIBC_2.27 nis_free_directory F
+GLIBC_2.27 nis_free_object F
+GLIBC_2.27 nis_free_request F
+GLIBC_2.27 nis_freenames F
+GLIBC_2.27 nis_freeresult F
+GLIBC_2.27 nis_freeservlist F
+GLIBC_2.27 nis_freetags F
+GLIBC_2.27 nis_getnames F
+GLIBC_2.27 nis_getservlist F
+GLIBC_2.27 nis_ismember F
+GLIBC_2.27 nis_leaf_of F
+GLIBC_2.27 nis_leaf_of_r F
+GLIBC_2.27 nis_lerror F
+GLIBC_2.27 nis_list F
+GLIBC_2.27 nis_local_directory F
+GLIBC_2.27 nis_local_group F
+GLIBC_2.27 nis_local_host F
+GLIBC_2.27 nis_local_principal F
+GLIBC_2.27 nis_lookup F
+GLIBC_2.27 nis_mkdir F
+GLIBC_2.27 nis_modify F
+GLIBC_2.27 nis_modify_entry F
+GLIBC_2.27 nis_name_of F
+GLIBC_2.27 nis_name_of_r F
+GLIBC_2.27 nis_next_entry F
+GLIBC_2.27 nis_perror F
+GLIBC_2.27 nis_ping F
+GLIBC_2.27 nis_print_directory F
+GLIBC_2.27 nis_print_entry F
+GLIBC_2.27 nis_print_group F
+GLIBC_2.27 nis_print_group_entry F
+GLIBC_2.27 nis_print_link F
+GLIBC_2.27 nis_print_object F
+GLIBC_2.27 nis_print_result F
+GLIBC_2.27 nis_print_rights F
+GLIBC_2.27 nis_print_table F
+GLIBC_2.27 nis_read_obj F
+GLIBC_2.27 nis_remove F
+GLIBC_2.27 nis_remove_entry F
+GLIBC_2.27 nis_removemember F
+GLIBC_2.27 nis_rmdir F
+GLIBC_2.27 nis_servstate F
+GLIBC_2.27 nis_sperrno F
+GLIBC_2.27 nis_sperror F
+GLIBC_2.27 nis_sperror_r F
+GLIBC_2.27 nis_stats F
+GLIBC_2.27 nis_verifygroup F
+GLIBC_2.27 nis_write_obj F
+GLIBC_2.27 readColdStartFile F
+GLIBC_2.27 writeColdStartFile F
+GLIBC_2.27 xdr_cback_data F
+GLIBC_2.27 xdr_domainname F
+GLIBC_2.27 xdr_keydat F
+GLIBC_2.27 xdr_mapname F
+GLIBC_2.27 xdr_obj_p F
+GLIBC_2.27 xdr_peername F
+GLIBC_2.27 xdr_valdat F
+GLIBC_2.27 xdr_yp_buf F
+GLIBC_2.27 xdr_ypall F
+GLIBC_2.27 xdr_ypbind_binding F
+GLIBC_2.27 xdr_ypbind_resp F
+GLIBC_2.27 xdr_ypbind_resptype F
+GLIBC_2.27 xdr_ypbind_setdom F
+GLIBC_2.27 xdr_ypdelete_args F
+GLIBC_2.27 xdr_ypmap_parms F
+GLIBC_2.27 xdr_ypmaplist F
+GLIBC_2.27 xdr_yppush_status F
+GLIBC_2.27 xdr_yppushresp_xfr F
+GLIBC_2.27 xdr_ypreq_key F
+GLIBC_2.27 xdr_ypreq_nokey F
+GLIBC_2.27 xdr_ypreq_xfr F
+GLIBC_2.27 xdr_ypresp_all F
+GLIBC_2.27 xdr_ypresp_key_val F
+GLIBC_2.27 xdr_ypresp_maplist F
+GLIBC_2.27 xdr_ypresp_master F
+GLIBC_2.27 xdr_ypresp_order F
+GLIBC_2.27 xdr_ypresp_val F
+GLIBC_2.27 xdr_ypresp_xfr F
+GLIBC_2.27 xdr_ypstat F
+GLIBC_2.27 xdr_ypupdate_args F
+GLIBC_2.27 xdr_ypxfrstat F
+GLIBC_2.27 yp_all F
+GLIBC_2.27 yp_bind F
+GLIBC_2.27 yp_first F
+GLIBC_2.27 yp_get_default_domain F
+GLIBC_2.27 yp_maplist F
+GLIBC_2.27 yp_master F
+GLIBC_2.27 yp_match F
+GLIBC_2.27 yp_next F
+GLIBC_2.27 yp_order F
+GLIBC_2.27 yp_unbind F
+GLIBC_2.27 yp_update F
+GLIBC_2.27 ypbinderr_string F
+GLIBC_2.27 yperr_string F
+GLIBC_2.27 ypprot_err F
diff --git a/sysdeps/unix/sysv/linux/riscv/libpthread.abilist b/sysdeps/unix/sysv/linux/riscv/libpthread.abilist
new file mode 100644
index 000000000000..fcc14ed7a347
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libpthread.abilist
@@ -0,0 +1,217 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 _IO_flockfile F
+GLIBC_2.27 _IO_ftrylockfile F
+GLIBC_2.27 _IO_funlockfile F
+GLIBC_2.27 __close F
+GLIBC_2.27 __connect F
+GLIBC_2.27 __errno_location F
+GLIBC_2.27 __fcntl F
+GLIBC_2.27 __h_errno_location F
+GLIBC_2.27 __libc_allocate_rtsig F
+GLIBC_2.27 __libc_current_sigrtmax F
+GLIBC_2.27 __libc_current_sigrtmin F
+GLIBC_2.27 __lseek F
+GLIBC_2.27 __nanosleep F
+GLIBC_2.27 __open F
+GLIBC_2.27 __open64 F
+GLIBC_2.27 __pread64 F
+GLIBC_2.27 __pthread_cleanup_routine F
+GLIBC_2.27 __pthread_getspecific F
+GLIBC_2.27 __pthread_key_create F
+GLIBC_2.27 __pthread_mutex_destroy F
+GLIBC_2.27 __pthread_mutex_init F
+GLIBC_2.27 __pthread_mutex_lock F
+GLIBC_2.27 __pthread_mutex_trylock F
+GLIBC_2.27 __pthread_mutex_unlock F
+GLIBC_2.27 __pthread_mutexattr_destroy F
+GLIBC_2.27 __pthread_mutexattr_init F
+GLIBC_2.27 __pthread_mutexattr_settype F
+GLIBC_2.27 __pthread_once F
+GLIBC_2.27 __pthread_register_cancel F
+GLIBC_2.27 __pthread_register_cancel_defer F
+GLIBC_2.27 __pthread_rwlock_destroy F
+GLIBC_2.27 __pthread_rwlock_init F
+GLIBC_2.27 __pthread_rwlock_rdlock F
+GLIBC_2.27 __pthread_rwlock_tryrdlock F
+GLIBC_2.27 __pthread_rwlock_trywrlock F
+GLIBC_2.27 __pthread_rwlock_unlock F
+GLIBC_2.27 __pthread_rwlock_wrlock F
+GLIBC_2.27 __pthread_setspecific F
+GLIBC_2.27 __pthread_unregister_cancel F
+GLIBC_2.27 __pthread_unregister_cancel_restore F
+GLIBC_2.27 __pthread_unwind_next F
+GLIBC_2.27 __pwrite64 F
+GLIBC_2.27 __read F
+GLIBC_2.27 __res_state F
+GLIBC_2.27 __send F
+GLIBC_2.27 __sigaction F
+GLIBC_2.27 __wait F
+GLIBC_2.27 __write F
+GLIBC_2.27 _pthread_cleanup_pop F
+GLIBC_2.27 _pthread_cleanup_pop_restore F
+GLIBC_2.27 _pthread_cleanup_push F
+GLIBC_2.27 _pthread_cleanup_push_defer F
+GLIBC_2.27 accept F
+GLIBC_2.27 close F
+GLIBC_2.27 connect F
+GLIBC_2.27 fcntl F
+GLIBC_2.27 flockfile F
+GLIBC_2.27 fsync F
+GLIBC_2.27 ftrylockfile F
+GLIBC_2.27 funlockfile F
+GLIBC_2.27 lseek F
+GLIBC_2.27 lseek64 F
+GLIBC_2.27 msync F
+GLIBC_2.27 nanosleep F
+GLIBC_2.27 open F
+GLIBC_2.27 open64 F
+GLIBC_2.27 pause F
+GLIBC_2.27 pread F
+GLIBC_2.27 pread64 F
+GLIBC_2.27 pthread_attr_destroy F
+GLIBC_2.27 pthread_attr_getaffinity_np F
+GLIBC_2.27 pthread_attr_getdetachstate F
+GLIBC_2.27 pthread_attr_getguardsize F
+GLIBC_2.27 pthread_attr_getinheritsched F
+GLIBC_2.27 pthread_attr_getschedparam F
+GLIBC_2.27 pthread_attr_getschedpolicy F
+GLIBC_2.27 pthread_attr_getscope F
+GLIBC_2.27 pthread_attr_getstack F
+GLIBC_2.27 pthread_attr_getstackaddr F
+GLIBC_2.27 pthread_attr_getstacksize F
+GLIBC_2.27 pthread_attr_init F
+GLIBC_2.27 pthread_attr_setaffinity_np F
+GLIBC_2.27 pthread_attr_setdetachstate F
+GLIBC_2.27 pthread_attr_setguardsize F
+GLIBC_2.27 pthread_attr_setinheritsched F
+GLIBC_2.27 pthread_attr_setschedparam F
+GLIBC_2.27 pthread_attr_setschedpolicy F
+GLIBC_2.27 pthread_attr_setscope F
+GLIBC_2.27 pthread_attr_setstack F
+GLIBC_2.27 pthread_attr_setstackaddr F
+GLIBC_2.27 pthread_attr_setstacksize F
+GLIBC_2.27 pthread_barrier_destroy F
+GLIBC_2.27 pthread_barrier_init F
+GLIBC_2.27 pthread_barrier_wait F
+GLIBC_2.27 pthread_barrierattr_destroy F
+GLIBC_2.27 pthread_barrierattr_getpshared F
+GLIBC_2.27 pthread_barrierattr_init F
+GLIBC_2.27 pthread_barrierattr_setpshared F
+GLIBC_2.27 pthread_cancel F
+GLIBC_2.27 pthread_cond_broadcast F
+GLIBC_2.27 pthread_cond_destroy F
+GLIBC_2.27 pthread_cond_init F
+GLIBC_2.27 pthread_cond_signal F
+GLIBC_2.27 pthread_cond_timedwait F
+GLIBC_2.27 pthread_cond_wait F
+GLIBC_2.27 pthread_condattr_destroy F
+GLIBC_2.27 pthread_condattr_getclock F
+GLIBC_2.27 pthread_condattr_getpshared F
+GLIBC_2.27 pthread_condattr_init F
+GLIBC_2.27 pthread_condattr_setclock F
+GLIBC_2.27 pthread_condattr_setpshared F
+GLIBC_2.27 pthread_create F
+GLIBC_2.27 pthread_detach F
+GLIBC_2.27 pthread_equal F
+GLIBC_2.27 pthread_exit F
+GLIBC_2.27 pthread_getaffinity_np F
+GLIBC_2.27 pthread_getattr_default_np F
+GLIBC_2.27 pthread_getattr_np F
+GLIBC_2.27 pthread_getconcurrency F
+GLIBC_2.27 pthread_getcpuclockid F
+GLIBC_2.27 pthread_getname_np F
+GLIBC_2.27 pthread_getschedparam F
+GLIBC_2.27 pthread_getspecific F
+GLIBC_2.27 pthread_join F
+GLIBC_2.27 pthread_key_create F
+GLIBC_2.27 pthread_key_delete F
+GLIBC_2.27 pthread_kill F
+GLIBC_2.27 pthread_kill_other_threads_np F
+GLIBC_2.27 pthread_mutex_consistent F
+GLIBC_2.27 pthread_mutex_consistent_np F
+GLIBC_2.27 pthread_mutex_destroy F
+GLIBC_2.27 pthread_mutex_getprioceiling F
+GLIBC_2.27 pthread_mutex_init F
+GLIBC_2.27 pthread_mutex_lock F
+GLIBC_2.27 pthread_mutex_setprioceiling F
+GLIBC_2.27 pthread_mutex_timedlock F
+GLIBC_2.27 pthread_mutex_trylock F
+GLIBC_2.27 pthread_mutex_unlock F
+GLIBC_2.27 pthread_mutexattr_destroy F
+GLIBC_2.27 pthread_mutexattr_getkind_np F
+GLIBC_2.27 pthread_mutexattr_getprioceiling F
+GLIBC_2.27 pthread_mutexattr_getprotocol F
+GLIBC_2.27 pthread_mutexattr_getpshared F
+GLIBC_2.27 pthread_mutexattr_getrobust F
+GLIBC_2.27 pthread_mutexattr_getrobust_np F
+GLIBC_2.27 pthread_mutexattr_gettype F
+GLIBC_2.27 pthread_mutexattr_init F
+GLIBC_2.27 pthread_mutexattr_setkind_np F
+GLIBC_2.27 pthread_mutexattr_setprioceiling F
+GLIBC_2.27 pthread_mutexattr_setprotocol F
+GLIBC_2.27 pthread_mutexattr_setpshared F
+GLIBC_2.27 pthread_mutexattr_setrobust F
+GLIBC_2.27 pthread_mutexattr_setrobust_np F
+GLIBC_2.27 pthread_mutexattr_settype F
+GLIBC_2.27 pthread_once F
+GLIBC_2.27 pthread_rwlock_destroy F
+GLIBC_2.27 pthread_rwlock_init F
+GLIBC_2.27 pthread_rwlock_rdlock F
+GLIBC_2.27 pthread_rwlock_timedrdlock F
+GLIBC_2.27 pthread_rwlock_timedwrlock F
+GLIBC_2.27 pthread_rwlock_tryrdlock F
+GLIBC_2.27 pthread_rwlock_trywrlock F
+GLIBC_2.27 pthread_rwlock_unlock F
+GLIBC_2.27 pthread_rwlock_wrlock F
+GLIBC_2.27 pthread_rwlockattr_destroy F
+GLIBC_2.27 pthread_rwlockattr_getkind_np F
+GLIBC_2.27 pthread_rwlockattr_getpshared F
+GLIBC_2.27 pthread_rwlockattr_init F
+GLIBC_2.27 pthread_rwlockattr_setkind_np F
+GLIBC_2.27 pthread_rwlockattr_setpshared F
+GLIBC_2.27 pthread_setaffinity_np F
+GLIBC_2.27 pthread_setattr_default_np F
+GLIBC_2.27 pthread_setcancelstate F
+GLIBC_2.27 pthread_setcanceltype F
+GLIBC_2.27 pthread_setconcurrency F
+GLIBC_2.27 pthread_setname_np F
+GLIBC_2.27 pthread_setschedparam F
+GLIBC_2.27 pthread_setschedprio F
+GLIBC_2.27 pthread_setspecific F
+GLIBC_2.27 pthread_sigmask F
+GLIBC_2.27 pthread_sigqueue F
+GLIBC_2.27 pthread_spin_destroy F
+GLIBC_2.27 pthread_spin_init F
+GLIBC_2.27 pthread_spin_lock F
+GLIBC_2.27 pthread_spin_trylock F
+GLIBC_2.27 pthread_spin_unlock F
+GLIBC_2.27 pthread_testcancel F
+GLIBC_2.27 pthread_timedjoin_np F
+GLIBC_2.27 pthread_tryjoin_np F
+GLIBC_2.27 pthread_yield F
+GLIBC_2.27 pwrite F
+GLIBC_2.27 pwrite64 F
+GLIBC_2.27 raise F
+GLIBC_2.27 read F
+GLIBC_2.27 recv F
+GLIBC_2.27 recvfrom F
+GLIBC_2.27 recvmsg F
+GLIBC_2.27 sem_close F
+GLIBC_2.27 sem_destroy F
+GLIBC_2.27 sem_getvalue F
+GLIBC_2.27 sem_init F
+GLIBC_2.27 sem_open F
+GLIBC_2.27 sem_post F
+GLIBC_2.27 sem_timedwait F
+GLIBC_2.27 sem_trywait F
+GLIBC_2.27 sem_unlink F
+GLIBC_2.27 sem_wait F
+GLIBC_2.27 send F
+GLIBC_2.27 sendmsg F
+GLIBC_2.27 sendto F
+GLIBC_2.27 sigaction F
+GLIBC_2.27 sigwait F
+GLIBC_2.27 tcdrain F
+GLIBC_2.27 wait F
+GLIBC_2.27 waitpid F
+GLIBC_2.27 write F
diff --git a/sysdeps/unix/sysv/linux/riscv/librt.abilist b/sysdeps/unix/sysv/linux/riscv/librt.abilist
new file mode 100644
index 000000000000..8442d01f270f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/librt.abilist
@@ -0,0 +1,36 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __mq_open_2 F
+GLIBC_2.27 aio_cancel F
+GLIBC_2.27 aio_cancel64 F
+GLIBC_2.27 aio_error F
+GLIBC_2.27 aio_error64 F
+GLIBC_2.27 aio_fsync F
+GLIBC_2.27 aio_fsync64 F
+GLIBC_2.27 aio_init F
+GLIBC_2.27 aio_read F
+GLIBC_2.27 aio_read64 F
+GLIBC_2.27 aio_return F
+GLIBC_2.27 aio_return64 F
+GLIBC_2.27 aio_suspend F
+GLIBC_2.27 aio_suspend64 F
+GLIBC_2.27 aio_write F
+GLIBC_2.27 aio_write64 F
+GLIBC_2.27 lio_listio F
+GLIBC_2.27 lio_listio64 F
+GLIBC_2.27 mq_close F
+GLIBC_2.27 mq_getattr F
+GLIBC_2.27 mq_notify F
+GLIBC_2.27 mq_open F
+GLIBC_2.27 mq_receive F
+GLIBC_2.27 mq_send F
+GLIBC_2.27 mq_setattr F
+GLIBC_2.27 mq_timedreceive F
+GLIBC_2.27 mq_timedsend F
+GLIBC_2.27 mq_unlink F
+GLIBC_2.27 shm_open F
+GLIBC_2.27 shm_unlink F
+GLIBC_2.27 timer_create F
+GLIBC_2.27 timer_delete F
+GLIBC_2.27 timer_getoverrun F
+GLIBC_2.27 timer_gettime F
+GLIBC_2.27 timer_settime F
diff --git a/sysdeps/unix/sysv/linux/riscv/libthread_db.abilist b/sysdeps/unix/sysv/linux/riscv/libthread_db.abilist
new file mode 100644
index 000000000000..3d34d7834f15
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libthread_db.abilist
@@ -0,0 +1,41 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 td_init F
+GLIBC_2.27 td_log F
+GLIBC_2.27 td_symbol_list F
+GLIBC_2.27 td_ta_clear_event F
+GLIBC_2.27 td_ta_delete F
+GLIBC_2.27 td_ta_enable_stats F
+GLIBC_2.27 td_ta_event_addr F
+GLIBC_2.27 td_ta_event_getmsg F
+GLIBC_2.27 td_ta_get_nthreads F
+GLIBC_2.27 td_ta_get_ph F
+GLIBC_2.27 td_ta_get_stats F
+GLIBC_2.27 td_ta_map_id2thr F
+GLIBC_2.27 td_ta_map_lwp2thr F
+GLIBC_2.27 td_ta_new F
+GLIBC_2.27 td_ta_reset_stats F
+GLIBC_2.27 td_ta_set_event F
+GLIBC_2.27 td_ta_setconcurrency F
+GLIBC_2.27 td_ta_thr_iter F
+GLIBC_2.27 td_ta_tsd_iter F
+GLIBC_2.27 td_thr_clear_event F
+GLIBC_2.27 td_thr_dbresume F
+GLIBC_2.27 td_thr_dbsuspend F
+GLIBC_2.27 td_thr_event_enable F
+GLIBC_2.27 td_thr_event_getmsg F
+GLIBC_2.27 td_thr_get_info F
+GLIBC_2.27 td_thr_getfpregs F
+GLIBC_2.27 td_thr_getgregs F
+GLIBC_2.27 td_thr_getxregs F
+GLIBC_2.27 td_thr_getxregsize F
+GLIBC_2.27 td_thr_set_event F
+GLIBC_2.27 td_thr_setfpregs F
+GLIBC_2.27 td_thr_setgregs F
+GLIBC_2.27 td_thr_setprio F
+GLIBC_2.27 td_thr_setsigpending F
+GLIBC_2.27 td_thr_setxregs F
+GLIBC_2.27 td_thr_sigsetmask F
+GLIBC_2.27 td_thr_tls_get_addr F
+GLIBC_2.27 td_thr_tlsbase F
+GLIBC_2.27 td_thr_tsd F
+GLIBC_2.27 td_thr_validate F
diff --git a/sysdeps/unix/sysv/linux/riscv/libutil.abilist b/sysdeps/unix/sysv/linux/riscv/libutil.abilist
new file mode 100644
index 000000000000..612e168897f8
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/libutil.abilist
@@ -0,0 +1,7 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 forkpty F
+GLIBC_2.27 login F
+GLIBC_2.27 login_tty F
+GLIBC_2.27 logout F
+GLIBC_2.27 logwtmp F
+GLIBC_2.27 openpty F
diff --git a/sysdeps/unix/sysv/linux/riscv/localplt.data b/sysdeps/unix/sysv/linux/riscv/localplt.data
new file mode 100644
index 000000000000..14c02cb2d6c0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/localplt.data
@@ -0,0 +1,19 @@
+# See scripts/check-localplt.awk for how this file is processed.
+# PLT use is required for the malloc family and for matherr because
+# users can define their own functions and have library internals call them.
+libc.so: calloc
+libc.so: free
+libc.so: malloc
+libc.so: memalign
+libc.so: realloc
+# The main malloc is interposed into the dynamic linker, for
+# allocations after the initial link (when dlopen is used).
+ld.so: malloc
+ld.so: calloc
+ld.so: realloc
+ld.so: free
+# The TLS-enabled version of these functions is interposed from libc.so.
+ld.so: _dl_signal_error
+ld.so: _dl_catch_error
+ld.so: _dl_signal_exception
+ld.so: _dl_catch_exception
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/c++-types.data b/sysdeps/unix/sysv/linux/riscv/rv32/c++-types.data
new file mode 100644
index 000000000000..303f4570c8ee
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/c++-types.data
@@ -0,0 +1,67 @@
+blkcnt64_t:x
+blkcnt_t:l
+blksize_t:i
+caddr_t:Pc
+clockid_t:i
+clock_t:l
+daddr_t:i
+dev_t:y
+fd_mask:l
+fsblkcnt64_t:y
+fsblkcnt_t:m
+fsfilcnt64_t:y
+fsfilcnt_t:m
+fsid_t:8__fsid_t
+gid_t:j
+id_t:j
+ino64_t:y
+ino_t:m
+int16_t:s
+int32_t:i
+int64_t:x
+int8_t:a
+intptr_t:i
+key_t:i
+loff_t:x
+mode_t:j
+nlink_t:j
+off64_t:x
+off_t:l
+pid_t:i
+pthread_attr_t:14pthread_attr_t
+pthread_barrier_t:17pthread_barrier_t
+pthread_barrierattr_t:21pthread_barrierattr_t
+pthread_cond_t:14pthread_cond_t
+pthread_condattr_t:18pthread_condattr_t
+pthread_key_t:j
+pthread_mutex_t:15pthread_mutex_t
+pthread_mutexattr_t:19pthread_mutexattr_t
+pthread_once_t:i
+pthread_rwlock_t:16pthread_rwlock_t
+pthread_rwlockattr_t:20pthread_rwlockattr_t
+pthread_spinlock_t:i
+pthread_t:m
+quad_t:x
+register_t:i
+rlim64_t:y
+rlim_t:m
+sigset_t:10__sigset_t
+size_t:j
+socklen_t:j
+ssize_t:i
+suseconds_t:l
+time_t:l
+u_char:h
+uid_t:j
+uint:j
+u_int:j
+u_int16_t:t
+u_int32_t:j
+u_int64_t:y
+u_int8_t:h
+ulong:m
+u_long:m
+u_quad_t:y
+useconds_t:j
+ushort:t
+u_short:t
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist
new file mode 100644
index 000000000000..eb8a78c5bd0f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist
@@ -0,0 +1,10 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __libc_stack_end D 0x4
+GLIBC_2.27 __stack_chk_guard D 0x4
+GLIBC_2.27 __tls_get_addr F
+GLIBC_2.27 _dl_mcount F
+GLIBC_2.27 _r_debug D 0x14
+GLIBC_2.27 calloc F
+GLIBC_2.27 free F
+GLIBC_2.27 malloc F
+GLIBC_2.27 realloc F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
new file mode 100644
index 000000000000..afe8d0d1736b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -0,0 +1,2096 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 _Exit F
+GLIBC_2.27 _IO_2_1_stderr_ D 0xa0
+GLIBC_2.27 _IO_2_1_stdin_ D 0xa0
+GLIBC_2.27 _IO_2_1_stdout_ D 0xa0
+GLIBC_2.27 _IO_adjust_column F
+GLIBC_2.27 _IO_adjust_wcolumn F
+GLIBC_2.27 _IO_default_doallocate F
+GLIBC_2.27 _IO_default_finish F
+GLIBC_2.27 _IO_default_pbackfail F
+GLIBC_2.27 _IO_default_uflow F
+GLIBC_2.27 _IO_default_xsgetn F
+GLIBC_2.27 _IO_default_xsputn F
+GLIBC_2.27 _IO_do_write F
+GLIBC_2.27 _IO_doallocbuf F
+GLIBC_2.27 _IO_fclose F
+GLIBC_2.27 _IO_fdopen F
+GLIBC_2.27 _IO_feof F
+GLIBC_2.27 _IO_ferror F
+GLIBC_2.27 _IO_fflush F
+GLIBC_2.27 _IO_fgetpos F
+GLIBC_2.27 _IO_fgetpos64 F
+GLIBC_2.27 _IO_fgets F
+GLIBC_2.27 _IO_file_attach F
+GLIBC_2.27 _IO_file_close F
+GLIBC_2.27 _IO_file_close_it F
+GLIBC_2.27 _IO_file_doallocate F
+GLIBC_2.27 _IO_file_finish F
+GLIBC_2.27 _IO_file_fopen F
+GLIBC_2.27 _IO_file_init F
+GLIBC_2.27 _IO_file_jumps D 0x54
+GLIBC_2.27 _IO_file_open F
+GLIBC_2.27 _IO_file_overflow F
+GLIBC_2.27 _IO_file_read F
+GLIBC_2.27 _IO_file_seek F
+GLIBC_2.27 _IO_file_seekoff F
+GLIBC_2.27 _IO_file_setbuf F
+GLIBC_2.27 _IO_file_stat F
+GLIBC_2.27 _IO_file_sync F
+GLIBC_2.27 _IO_file_underflow F
+GLIBC_2.27 _IO_file_write F
+GLIBC_2.27 _IO_file_xsputn F
+GLIBC_2.27 _IO_flockfile F
+GLIBC_2.27 _IO_flush_all F
+GLIBC_2.27 _IO_flush_all_linebuffered F
+GLIBC_2.27 _IO_fopen F
+GLIBC_2.27 _IO_fprintf F
+GLIBC_2.27 _IO_fputs F
+GLIBC_2.27 _IO_fread F
+GLIBC_2.27 _IO_free_backup_area F
+GLIBC_2.27 _IO_free_wbackup_area F
+GLIBC_2.27 _IO_fsetpos F
+GLIBC_2.27 _IO_fsetpos64 F
+GLIBC_2.27 _IO_ftell F
+GLIBC_2.27 _IO_ftrylockfile F
+GLIBC_2.27 _IO_funlockfile F
+GLIBC_2.27 _IO_fwrite F
+GLIBC_2.27 _IO_getc F
+GLIBC_2.27 _IO_getline F
+GLIBC_2.27 _IO_getline_info F
+GLIBC_2.27 _IO_gets F
+GLIBC_2.27 _IO_init F
+GLIBC_2.27 _IO_init_marker F
+GLIBC_2.27 _IO_init_wmarker F
+GLIBC_2.27 _IO_iter_begin F
+GLIBC_2.27 _IO_iter_end F
+GLIBC_2.27 _IO_iter_file F
+GLIBC_2.27 _IO_iter_next F
+GLIBC_2.27 _IO_least_wmarker F
+GLIBC_2.27 _IO_link_in F
+GLIBC_2.27 _IO_list_all D 0x4
+GLIBC_2.27 _IO_list_lock F
+GLIBC_2.27 _IO_list_resetlock F
+GLIBC_2.27 _IO_list_unlock F
+GLIBC_2.27 _IO_marker_delta F
+GLIBC_2.27 _IO_marker_difference F
+GLIBC_2.27 _IO_padn F
+GLIBC_2.27 _IO_peekc_locked F
+GLIBC_2.27 _IO_popen F
+GLIBC_2.27 _IO_printf F
+GLIBC_2.27 _IO_proc_close F
+GLIBC_2.27 _IO_proc_open F
+GLIBC_2.27 _IO_putc F
+GLIBC_2.27 _IO_puts F
+GLIBC_2.27 _IO_remove_marker F
+GLIBC_2.27 _IO_seekmark F
+GLIBC_2.27 _IO_seekoff F
+GLIBC_2.27 _IO_seekpos F
+GLIBC_2.27 _IO_seekwmark F
+GLIBC_2.27 _IO_setb F
+GLIBC_2.27 _IO_setbuffer F
+GLIBC_2.27 _IO_setvbuf F
+GLIBC_2.27 _IO_sgetn F
+GLIBC_2.27 _IO_sprintf F
+GLIBC_2.27 _IO_sputbackc F
+GLIBC_2.27 _IO_sputbackwc F
+GLIBC_2.27 _IO_sscanf F
+GLIBC_2.27 _IO_str_init_readonly F
+GLIBC_2.27 _IO_str_init_static F
+GLIBC_2.27 _IO_str_overflow F
+GLIBC_2.27 _IO_str_pbackfail F
+GLIBC_2.27 _IO_str_seekoff F
+GLIBC_2.27 _IO_str_underflow F
+GLIBC_2.27 _IO_sungetc F
+GLIBC_2.27 _IO_sungetwc F
+GLIBC_2.27 _IO_switch_to_get_mode F
+GLIBC_2.27 _IO_switch_to_main_wget_area F
+GLIBC_2.27 _IO_switch_to_wbackup_area F
+GLIBC_2.27 _IO_switch_to_wget_mode F
+GLIBC_2.27 _IO_un_link F
+GLIBC_2.27 _IO_ungetc F
+GLIBC_2.27 _IO_unsave_markers F
+GLIBC_2.27 _IO_unsave_wmarkers F
+GLIBC_2.27 _IO_vfprintf F
+GLIBC_2.27 _IO_vfscanf F
+GLIBC_2.27 _IO_vsprintf F
+GLIBC_2.27 _IO_wdefault_doallocate F
+GLIBC_2.27 _IO_wdefault_finish F
+GLIBC_2.27 _IO_wdefault_pbackfail F
+GLIBC_2.27 _IO_wdefault_uflow F
+GLIBC_2.27 _IO_wdefault_xsgetn F
+GLIBC_2.27 _IO_wdefault_xsputn F
+GLIBC_2.27 _IO_wdo_write F
+GLIBC_2.27 _IO_wdoallocbuf F
+GLIBC_2.27 _IO_wfile_jumps D 0x54
+GLIBC_2.27 _IO_wfile_overflow F
+GLIBC_2.27 _IO_wfile_seekoff F
+GLIBC_2.27 _IO_wfile_sync F
+GLIBC_2.27 _IO_wfile_underflow F
+GLIBC_2.27 _IO_wfile_xsputn F
+GLIBC_2.27 _IO_wmarker_delta F
+GLIBC_2.27 _IO_wsetb F
+GLIBC_2.27 ___brk_addr D 0x4
+GLIBC_2.27 __adjtimex F
+GLIBC_2.27 __after_morecore_hook D 0x4
+GLIBC_2.27 __argz_count F
+GLIBC_2.27 __argz_next F
+GLIBC_2.27 __argz_stringify F
+GLIBC_2.27 __asprintf F
+GLIBC_2.27 __asprintf_chk F
+GLIBC_2.27 __assert F
+GLIBC_2.27 __assert_fail F
+GLIBC_2.27 __assert_perror_fail F
+GLIBC_2.27 __backtrace F
+GLIBC_2.27 __backtrace_symbols F
+GLIBC_2.27 __backtrace_symbols_fd F
+GLIBC_2.27 __bsd_getpgrp F
+GLIBC_2.27 __bzero F
+GLIBC_2.27 __check_rhosts_file D 0x4
+GLIBC_2.27 __chk_fail F
+GLIBC_2.27 __clone F
+GLIBC_2.27 __close F
+GLIBC_2.27 __cmsg_nxthdr F
+GLIBC_2.27 __confstr_chk F
+GLIBC_2.27 __connect F
+GLIBC_2.27 __ctype_b_loc F
+GLIBC_2.27 __ctype_get_mb_cur_max F
+GLIBC_2.27 __ctype_tolower_loc F
+GLIBC_2.27 __ctype_toupper_loc F
+GLIBC_2.27 __curbrk D 0x4
+GLIBC_2.27 __cxa_at_quick_exit F
+GLIBC_2.27 __cxa_atexit F
+GLIBC_2.27 __cxa_finalize F
+GLIBC_2.27 __cxa_thread_atexit_impl F
+GLIBC_2.27 __cyg_profile_func_enter F
+GLIBC_2.27 __cyg_profile_func_exit F
+GLIBC_2.27 __daylight D 0x4
+GLIBC_2.27 __dcgettext F
+GLIBC_2.27 __default_morecore F
+GLIBC_2.27 __dgettext F
+GLIBC_2.27 __dprintf_chk F
+GLIBC_2.27 __dup2 F
+GLIBC_2.27 __duplocale F
+GLIBC_2.27 __endmntent F
+GLIBC_2.27 __environ D 0x4
+GLIBC_2.27 __errno_location F
+GLIBC_2.27 __explicit_bzero_chk F
+GLIBC_2.27 __fbufsize F
+GLIBC_2.27 __fcntl F
+GLIBC_2.27 __fdelt_chk F
+GLIBC_2.27 __fdelt_warn F
+GLIBC_2.27 __ffs F
+GLIBC_2.27 __fgets_chk F
+GLIBC_2.27 __fgets_unlocked_chk F
+GLIBC_2.27 __fgetws_chk F
+GLIBC_2.27 __fgetws_unlocked_chk F
+GLIBC_2.27 __finite F
+GLIBC_2.27 __finitef F
+GLIBC_2.27 __finitel F
+GLIBC_2.27 __flbf F
+GLIBC_2.27 __fork F
+GLIBC_2.27 __fpending F
+GLIBC_2.27 __fprintf_chk F
+GLIBC_2.27 __fpu_control D 0x4
+GLIBC_2.27 __fpurge F
+GLIBC_2.27 __fread_chk F
+GLIBC_2.27 __fread_unlocked_chk F
+GLIBC_2.27 __freadable F
+GLIBC_2.27 __freading F
+GLIBC_2.27 __free_hook D 0x4
+GLIBC_2.27 __freelocale F
+GLIBC_2.27 __fsetlocking F
+GLIBC_2.27 __fwprintf_chk F
+GLIBC_2.27 __fwritable F
+GLIBC_2.27 __fwriting F
+GLIBC_2.27 __fxstat F
+GLIBC_2.27 __fxstat64 F
+GLIBC_2.27 __fxstatat F
+GLIBC_2.27 __fxstatat64 F
+GLIBC_2.27 __getauxval F
+GLIBC_2.27 __getcwd_chk F
+GLIBC_2.27 __getdelim F
+GLIBC_2.27 __getdomainname_chk F
+GLIBC_2.27 __getgroups_chk F
+GLIBC_2.27 __gethostname_chk F
+GLIBC_2.27 __getlogin_r_chk F
+GLIBC_2.27 __getmntent_r F
+GLIBC_2.27 __getpagesize F
+GLIBC_2.27 __getpgid F
+GLIBC_2.27 __getpid F
+GLIBC_2.27 __gets_chk F
+GLIBC_2.27 __gettimeofday F
+GLIBC_2.27 __getwd_chk F
+GLIBC_2.27 __gmtime_r F
+GLIBC_2.27 __h_errno_location F
+GLIBC_2.27 __isalnum_l F
+GLIBC_2.27 __isalpha_l F
+GLIBC_2.27 __isascii_l F
+GLIBC_2.27 __isblank_l F
+GLIBC_2.27 __iscntrl_l F
+GLIBC_2.27 __isctype F
+GLIBC_2.27 __isdigit_l F
+GLIBC_2.27 __isgraph_l F
+GLIBC_2.27 __isinf F
+GLIBC_2.27 __isinff F
+GLIBC_2.27 __isinfl F
+GLIBC_2.27 __islower_l F
+GLIBC_2.27 __isnan F
+GLIBC_2.27 __isnanf F
+GLIBC_2.27 __isnanl F
+GLIBC_2.27 __isoc99_fscanf F
+GLIBC_2.27 __isoc99_fwscanf F
+GLIBC_2.27 __isoc99_scanf F
+GLIBC_2.27 __isoc99_sscanf F
+GLIBC_2.27 __isoc99_swscanf F
+GLIBC_2.27 __isoc99_vfscanf F
+GLIBC_2.27 __isoc99_vfwscanf F
+GLIBC_2.27 __isoc99_vscanf F
+GLIBC_2.27 __isoc99_vsscanf F
+GLIBC_2.27 __isoc99_vswscanf F
+GLIBC_2.27 __isoc99_vwscanf F
+GLIBC_2.27 __isoc99_wscanf F
+GLIBC_2.27 __isprint_l F
+GLIBC_2.27 __ispunct_l F
+GLIBC_2.27 __isspace_l F
+GLIBC_2.27 __isupper_l F
+GLIBC_2.27 __iswalnum_l F
+GLIBC_2.27 __iswalpha_l F
+GLIBC_2.27 __iswblank_l F
+GLIBC_2.27 __iswcntrl_l F
+GLIBC_2.27 __iswctype F
+GLIBC_2.27 __iswctype_l F
+GLIBC_2.27 __iswdigit_l F
+GLIBC_2.27 __iswgraph_l F
+GLIBC_2.27 __iswlower_l F
+GLIBC_2.27 __iswprint_l F
+GLIBC_2.27 __iswpunct_l F
+GLIBC_2.27 __iswspace_l F
+GLIBC_2.27 __iswupper_l F
+GLIBC_2.27 __iswxdigit_l F
+GLIBC_2.27 __isxdigit_l F
+GLIBC_2.27 __ivaliduser F
+GLIBC_2.27 __key_decryptsession_pk_LOCAL D 0x4
+GLIBC_2.27 __key_encryptsession_pk_LOCAL D 0x4
+GLIBC_2.27 __key_gendes_LOCAL D 0x4
+GLIBC_2.27 __libc_allocate_rtsig F
+GLIBC_2.27 __libc_calloc F
+GLIBC_2.27 __libc_current_sigrtmax F
+GLIBC_2.27 __libc_current_sigrtmin F
+GLIBC_2.27 __libc_free F
+GLIBC_2.27 __libc_freeres F
+GLIBC_2.27 __libc_init_first F
+GLIBC_2.27 __libc_mallinfo F
+GLIBC_2.27 __libc_malloc F
+GLIBC_2.27 __libc_mallopt F
+GLIBC_2.27 __libc_memalign F
+GLIBC_2.27 __libc_pvalloc F
+GLIBC_2.27 __libc_realloc F
+GLIBC_2.27 __libc_sa_len F
+GLIBC_2.27 __libc_start_main F
+GLIBC_2.27 __libc_valloc F
+GLIBC_2.27 __longjmp_chk F
+GLIBC_2.27 __lseek F
+GLIBC_2.27 __lxstat F
+GLIBC_2.27 __lxstat64 F
+GLIBC_2.27 __malloc_hook D 0x4
+GLIBC_2.27 __mbrlen F
+GLIBC_2.27 __mbrtowc F
+GLIBC_2.27 __mbsnrtowcs_chk F
+GLIBC_2.27 __mbsrtowcs_chk F
+GLIBC_2.27 __mbstowcs_chk F
+GLIBC_2.27 __memalign_hook D 0x4
+GLIBC_2.27 __memcpy_chk F
+GLIBC_2.27 __memmove_chk F
+GLIBC_2.27 __mempcpy F
+GLIBC_2.27 __mempcpy_chk F
+GLIBC_2.27 __memset_chk F
+GLIBC_2.27 __monstartup F
+GLIBC_2.27 __morecore D 0x4
+GLIBC_2.27 __nanosleep F
+GLIBC_2.27 __newlocale F
+GLIBC_2.27 __nl_langinfo_l F
+GLIBC_2.27 __nss_configure_lookup F
+GLIBC_2.27 __nss_database_lookup F
+GLIBC_2.27 __nss_hostname_digits_dots F
+GLIBC_2.27 __nss_next F
+GLIBC_2.27 __obstack_printf_chk F
+GLIBC_2.27 __obstack_vprintf_chk F
+GLIBC_2.27 __open F
+GLIBC_2.27 __open64 F
+GLIBC_2.27 __open64_2 F
+GLIBC_2.27 __open_2 F
+GLIBC_2.27 __openat64_2 F
+GLIBC_2.27 __openat_2 F
+GLIBC_2.27 __overflow F
+GLIBC_2.27 __pipe F
+GLIBC_2.27 __poll F
+GLIBC_2.27 __poll_chk F
+GLIBC_2.27 __posix_getopt F
+GLIBC_2.27 __ppoll_chk F
+GLIBC_2.27 __pread64 F
+GLIBC_2.27 __pread64_chk F
+GLIBC_2.27 __pread_chk F
+GLIBC_2.27 __printf_chk F
+GLIBC_2.27 __printf_fp F
+GLIBC_2.27 __profile_frequency F
+GLIBC_2.27 __progname D 0x4
+GLIBC_2.27 __progname_full D 0x4
+GLIBC_2.27 __ptsname_r_chk F
+GLIBC_2.27 __pwrite64 F
+GLIBC_2.27 __rawmemchr F
+GLIBC_2.27 __rcmd_errstr D 0x4
+GLIBC_2.27 __read F
+GLIBC_2.27 __read_chk F
+GLIBC_2.27 __readlink_chk F
+GLIBC_2.27 __readlinkat_chk F
+GLIBC_2.27 __realloc_hook D 0x4
+GLIBC_2.27 __realpath_chk F
+GLIBC_2.27 __recv_chk F
+GLIBC_2.27 __recvfrom_chk F
+GLIBC_2.27 __register_atfork F
+GLIBC_2.27 __res_init F
+GLIBC_2.27 __res_nclose F
+GLIBC_2.27 __res_ninit F
+GLIBC_2.27 __res_randomid F
+GLIBC_2.27 __res_state F
+GLIBC_2.27 __riscv_flush_icache F
+GLIBC_2.27 __rpc_thread_createerr F
+GLIBC_2.27 __rpc_thread_svc_fdset F
+GLIBC_2.27 __rpc_thread_svc_max_pollfd F
+GLIBC_2.27 __rpc_thread_svc_pollfd F
+GLIBC_2.27 __sbrk F
+GLIBC_2.27 __sched_cpualloc F
+GLIBC_2.27 __sched_cpucount F
+GLIBC_2.27 __sched_cpufree F
+GLIBC_2.27 __sched_get_priority_max F
+GLIBC_2.27 __sched_get_priority_min F
+GLIBC_2.27 __sched_getparam F
+GLIBC_2.27 __sched_getscheduler F
+GLIBC_2.27 __sched_setscheduler F
+GLIBC_2.27 __sched_yield F
+GLIBC_2.27 __select F
+GLIBC_2.27 __send F
+GLIBC_2.27 __setmntent F
+GLIBC_2.27 __setpgid F
+GLIBC_2.27 __sigaction F
+GLIBC_2.27 __signbit F
+GLIBC_2.27 __signbitf F
+GLIBC_2.27 __signbitl F
+GLIBC_2.27 __sigpause F
+GLIBC_2.27 __sigsetjmp F
+GLIBC_2.27 __sigsuspend F
+GLIBC_2.27 __snprintf_chk F
+GLIBC_2.27 __sprintf_chk F
+GLIBC_2.27 __stack_chk_fail F
+GLIBC_2.27 __statfs F
+GLIBC_2.27 __stpcpy F
+GLIBC_2.27 __stpcpy_chk F
+GLIBC_2.27 __stpncpy F
+GLIBC_2.27 __stpncpy_chk F
+GLIBC_2.27 __strcasecmp F
+GLIBC_2.27 __strcasecmp_l F
+GLIBC_2.27 __strcasestr F
+GLIBC_2.27 __strcat_chk F
+GLIBC_2.27 __strcoll_l F
+GLIBC_2.27 __strcpy_chk F
+GLIBC_2.27 __strdup F
+GLIBC_2.27 __strerror_r F
+GLIBC_2.27 __strfmon_l F
+GLIBC_2.27 __strftime_l F
+GLIBC_2.27 __strncasecmp_l F
+GLIBC_2.27 __strncat_chk F
+GLIBC_2.27 __strncpy_chk F
+GLIBC_2.27 __strndup F
+GLIBC_2.27 __strsep_g F
+GLIBC_2.27 __strtod_internal F
+GLIBC_2.27 __strtod_l F
+GLIBC_2.27 __strtof_internal F
+GLIBC_2.27 __strtof_l F
+GLIBC_2.27 __strtok_r F
+GLIBC_2.27 __strtol_internal F
+GLIBC_2.27 __strtol_l F
+GLIBC_2.27 __strtold_internal F
+GLIBC_2.27 __strtold_l F
+GLIBC_2.27 __strtoll_internal F
+GLIBC_2.27 __strtoll_l F
+GLIBC_2.27 __strtoul_internal F
+GLIBC_2.27 __strtoul_l F
+GLIBC_2.27 __strtoull_internal F
+GLIBC_2.27 __strtoull_l F
+GLIBC_2.27 __strverscmp F
+GLIBC_2.27 __strxfrm_l F
+GLIBC_2.27 __swprintf_chk F
+GLIBC_2.27 __sysconf F
+GLIBC_2.27 __syslog_chk F
+GLIBC_2.27 __sysv_signal F
+GLIBC_2.27 __timezone D 0x4
+GLIBC_2.27 __toascii_l F
+GLIBC_2.27 __tolower_l F
+GLIBC_2.27 __toupper_l F
+GLIBC_2.27 __towctrans F
+GLIBC_2.27 __towctrans_l F
+GLIBC_2.27 __towlower_l F
+GLIBC_2.27 __towupper_l F
+GLIBC_2.27 __ttyname_r_chk F
+GLIBC_2.27 __tzname D 0x8
+GLIBC_2.27 __uflow F
+GLIBC_2.27 __underflow F
+GLIBC_2.27 __uselocale F
+GLIBC_2.27 __vasprintf_chk F
+GLIBC_2.27 __vdprintf_chk F
+GLIBC_2.27 __vfork F
+GLIBC_2.27 __vfprintf_chk F
+GLIBC_2.27 __vfscanf F
+GLIBC_2.27 __vfwprintf_chk F
+GLIBC_2.27 __vprintf_chk F
+GLIBC_2.27 __vsnprintf F
+GLIBC_2.27 __vsnprintf_chk F
+GLIBC_2.27 __vsprintf_chk F
+GLIBC_2.27 __vsscanf F
+GLIBC_2.27 __vswprintf_chk F
+GLIBC_2.27 __vsyslog_chk F
+GLIBC_2.27 __vwprintf_chk F
+GLIBC_2.27 __wait F
+GLIBC_2.27 __waitpid F
+GLIBC_2.27 __wcpcpy_chk F
+GLIBC_2.27 __wcpncpy_chk F
+GLIBC_2.27 __wcrtomb_chk F
+GLIBC_2.27 __wcscasecmp_l F
+GLIBC_2.27 __wcscat_chk F
+GLIBC_2.27 __wcscoll_l F
+GLIBC_2.27 __wcscpy_chk F
+GLIBC_2.27 __wcsftime_l F
+GLIBC_2.27 __wcsncasecmp_l F
+GLIBC_2.27 __wcsncat_chk F
+GLIBC_2.27 __wcsncpy_chk F
+GLIBC_2.27 __wcsnrtombs_chk F
+GLIBC_2.27 __wcsrtombs_chk F
+GLIBC_2.27 __wcstod_internal F
+GLIBC_2.27 __wcstod_l F
+GLIBC_2.27 __wcstof_internal F
+GLIBC_2.27 __wcstof_l F
+GLIBC_2.27 __wcstol_internal F
+GLIBC_2.27 __wcstol_l F
+GLIBC_2.27 __wcstold_internal F
+GLIBC_2.27 __wcstold_l F
+GLIBC_2.27 __wcstoll_internal F
+GLIBC_2.27 __wcstoll_l F
+GLIBC_2.27 __wcstombs_chk F
+GLIBC_2.27 __wcstoul_internal F
+GLIBC_2.27 __wcstoul_l F
+GLIBC_2.27 __wcstoull_internal F
+GLIBC_2.27 __wcstoull_l F
+GLIBC_2.27 __wcsxfrm_l F
+GLIBC_2.27 __wctomb_chk F
+GLIBC_2.27 __wctrans_l F
+GLIBC_2.27 __wctype_l F
+GLIBC_2.27 __wmemcpy_chk F
+GLIBC_2.27 __wmemmove_chk F
+GLIBC_2.27 __wmempcpy_chk F
+GLIBC_2.27 __wmemset_chk F
+GLIBC_2.27 __woverflow F
+GLIBC_2.27 __wprintf_chk F
+GLIBC_2.27 __write F
+GLIBC_2.27 __wuflow F
+GLIBC_2.27 __wunderflow F
+GLIBC_2.27 __xmknod F
+GLIBC_2.27 __xmknodat F
+GLIBC_2.27 __xpg_basename F
+GLIBC_2.27 __xpg_sigpause F
+GLIBC_2.27 __xpg_strerror_r F
+GLIBC_2.27 __xstat F
+GLIBC_2.27 __xstat64 F
+GLIBC_2.27 _authenticate F
+GLIBC_2.27 _dl_mcount_wrapper F
+GLIBC_2.27 _dl_mcount_wrapper_check F
+GLIBC_2.27 _environ D 0x4
+GLIBC_2.27 _exit F
+GLIBC_2.27 _flushlbf F
+GLIBC_2.27 _libc_intl_domainname D 0x5
+GLIBC_2.27 _longjmp F
+GLIBC_2.27 _mcleanup F
+GLIBC_2.27 _mcount F
+GLIBC_2.27 _nl_default_dirname D 0x12
+GLIBC_2.27 _nl_domain_bindings D 0x4
+GLIBC_2.27 _nl_msg_cat_cntr D 0x4
+GLIBC_2.27 _null_auth D 0xc
+GLIBC_2.27 _obstack_allocated_p F
+GLIBC_2.27 _obstack_begin F
+GLIBC_2.27 _obstack_begin_1 F
+GLIBC_2.27 _obstack_free F
+GLIBC_2.27 _obstack_memory_used F
+GLIBC_2.27 _obstack_newchunk F
+GLIBC_2.27 _res D 0x200
+GLIBC_2.27 _res_hconf D 0x30
+GLIBC_2.27 _rpc_dtablesize F
+GLIBC_2.27 _seterr_reply F
+GLIBC_2.27 _setjmp F
+GLIBC_2.27 _sys_errlist D 0x21c
+GLIBC_2.27 _sys_nerr D 0x4
+GLIBC_2.27 _sys_siglist D 0x104
+GLIBC_2.27 _tolower F
+GLIBC_2.27 _toupper F
+GLIBC_2.27 a64l F
+GLIBC_2.27 abort F
+GLIBC_2.27 abs F
+GLIBC_2.27 accept F
+GLIBC_2.27 accept4 F
+GLIBC_2.27 access F
+GLIBC_2.27 acct F
+GLIBC_2.27 addmntent F
+GLIBC_2.27 addseverity F
+GLIBC_2.27 adjtime F
+GLIBC_2.27 adjtimex F
+GLIBC_2.27 alarm F
+GLIBC_2.27 aligned_alloc F
+GLIBC_2.27 alphasort F
+GLIBC_2.27 alphasort64 F
+GLIBC_2.27 argp_err_exit_status D 0x4
+GLIBC_2.27 argp_error F
+GLIBC_2.27 argp_failure F
+GLIBC_2.27 argp_help F
+GLIBC_2.27 argp_parse F
+GLIBC_2.27 argp_program_bug_address D 0x4
+GLIBC_2.27 argp_program_version D 0x4
+GLIBC_2.27 argp_program_version_hook D 0x4
+GLIBC_2.27 argp_state_help F
+GLIBC_2.27 argp_usage F
+GLIBC_2.27 argz_add F
+GLIBC_2.27 argz_add_sep F
+GLIBC_2.27 argz_append F
+GLIBC_2.27 argz_count F
+GLIBC_2.27 argz_create F
+GLIBC_2.27 argz_create_sep F
+GLIBC_2.27 argz_delete F
+GLIBC_2.27 argz_extract F
+GLIBC_2.27 argz_insert F
+GLIBC_2.27 argz_next F
+GLIBC_2.27 argz_replace F
+GLIBC_2.27 argz_stringify F
+GLIBC_2.27 asctime F
+GLIBC_2.27 asctime_r F
+GLIBC_2.27 asprintf F
+GLIBC_2.27 atof F
+GLIBC_2.27 atoi F
+GLIBC_2.27 atol F
+GLIBC_2.27 atoll F
+GLIBC_2.27 authdes_create F
+GLIBC_2.27 authdes_getucred F
+GLIBC_2.27 authdes_pk_create F
+GLIBC_2.27 authnone_create F
+GLIBC_2.27 authunix_create F
+GLIBC_2.27 authunix_create_default F
+GLIBC_2.27 backtrace F
+GLIBC_2.27 backtrace_symbols F
+GLIBC_2.27 backtrace_symbols_fd F
+GLIBC_2.27 basename F
+GLIBC_2.27 bcmp F
+GLIBC_2.27 bcopy F
+GLIBC_2.27 bind F
+GLIBC_2.27 bind_textdomain_codeset F
+GLIBC_2.27 bindresvport F
+GLIBC_2.27 bindtextdomain F
+GLIBC_2.27 brk F
+GLIBC_2.27 bsd_signal F
+GLIBC_2.27 bsearch F
+GLIBC_2.27 btowc F
+GLIBC_2.27 bzero F
+GLIBC_2.27 c16rtomb F
+GLIBC_2.27 c32rtomb F
+GLIBC_2.27 calloc F
+GLIBC_2.27 callrpc F
+GLIBC_2.27 canonicalize_file_name F
+GLIBC_2.27 capget F
+GLIBC_2.27 capset F
+GLIBC_2.27 catclose F
+GLIBC_2.27 catgets F
+GLIBC_2.27 catopen F
+GLIBC_2.27 cbc_crypt F
+GLIBC_2.27 cfgetispeed F
+GLIBC_2.27 cfgetospeed F
+GLIBC_2.27 cfmakeraw F
+GLIBC_2.27 cfsetispeed F
+GLIBC_2.27 cfsetospeed F
+GLIBC_2.27 cfsetspeed F
+GLIBC_2.27 chdir F
+GLIBC_2.27 chflags F
+GLIBC_2.27 chmod F
+GLIBC_2.27 chown F
+GLIBC_2.27 chroot F
+GLIBC_2.27 clearenv F
+GLIBC_2.27 clearerr F
+GLIBC_2.27 clearerr_unlocked F
+GLIBC_2.27 clnt_broadcast F
+GLIBC_2.27 clnt_create F
+GLIBC_2.27 clnt_pcreateerror F
+GLIBC_2.27 clnt_perrno F
+GLIBC_2.27 clnt_perror F
+GLIBC_2.27 clnt_spcreateerror F
+GLIBC_2.27 clnt_sperrno F
+GLIBC_2.27 clnt_sperror F
+GLIBC_2.27 clntraw_create F
+GLIBC_2.27 clnttcp_create F
+GLIBC_2.27 clntudp_bufcreate F
+GLIBC_2.27 clntudp_create F
+GLIBC_2.27 clntunix_create F
+GLIBC_2.27 clock F
+GLIBC_2.27 clock_adjtime F
+GLIBC_2.27 clock_getcpuclockid F
+GLIBC_2.27 clock_getres F
+GLIBC_2.27 clock_gettime F
+GLIBC_2.27 clock_nanosleep F
+GLIBC_2.27 clock_settime F
+GLIBC_2.27 clone F
+GLIBC_2.27 close F
+GLIBC_2.27 closedir F
+GLIBC_2.27 closelog F
+GLIBC_2.27 confstr F
+GLIBC_2.27 connect F
+GLIBC_2.27 copy_file_range F
+GLIBC_2.27 copysign F
+GLIBC_2.27 copysignf F
+GLIBC_2.27 copysignl F
+GLIBC_2.27 creat F
+GLIBC_2.27 creat64 F
+GLIBC_2.27 ctermid F
+GLIBC_2.27 ctime F
+GLIBC_2.27 ctime_r F
+GLIBC_2.27 cuserid F
+GLIBC_2.27 daemon F
+GLIBC_2.27 daylight D 0x4
+GLIBC_2.27 dcgettext F
+GLIBC_2.27 dcngettext F
+GLIBC_2.27 delete_module F
+GLIBC_2.27 des_setparity F
+GLIBC_2.27 dgettext F
+GLIBC_2.27 difftime F
+GLIBC_2.27 dirfd F
+GLIBC_2.27 dirname F
+GLIBC_2.27 div F
+GLIBC_2.27 dl_iterate_phdr F
+GLIBC_2.27 dngettext F
+GLIBC_2.27 dprintf F
+GLIBC_2.27 drand48 F
+GLIBC_2.27 drand48_r F
+GLIBC_2.27 dup F
+GLIBC_2.27 dup2 F
+GLIBC_2.27 dup3 F
+GLIBC_2.27 duplocale F
+GLIBC_2.27 dysize F
+GLIBC_2.27 eaccess F
+GLIBC_2.27 ecb_crypt F
+GLIBC_2.27 ecvt F
+GLIBC_2.27 ecvt_r F
+GLIBC_2.27 endaliasent F
+GLIBC_2.27 endfsent F
+GLIBC_2.27 endgrent F
+GLIBC_2.27 endhostent F
+GLIBC_2.27 endmntent F
+GLIBC_2.27 endnetent F
+GLIBC_2.27 endnetgrent F
+GLIBC_2.27 endprotoent F
+GLIBC_2.27 endpwent F
+GLIBC_2.27 endrpcent F
+GLIBC_2.27 endservent F
+GLIBC_2.27 endsgent F
+GLIBC_2.27 endspent F
+GLIBC_2.27 endttyent F
+GLIBC_2.27 endusershell F
+GLIBC_2.27 endutent F
+GLIBC_2.27 endutxent F
+GLIBC_2.27 environ D 0x4
+GLIBC_2.27 envz_add F
+GLIBC_2.27 envz_entry F
+GLIBC_2.27 envz_get F
+GLIBC_2.27 envz_merge F
+GLIBC_2.27 envz_remove F
+GLIBC_2.27 envz_strip F
+GLIBC_2.27 epoll_create F
+GLIBC_2.27 epoll_create1 F
+GLIBC_2.27 epoll_ctl F
+GLIBC_2.27 epoll_pwait F
+GLIBC_2.27 epoll_wait F
+GLIBC_2.27 erand48 F
+GLIBC_2.27 erand48_r F
+GLIBC_2.27 err F
+GLIBC_2.27 error F
+GLIBC_2.27 error_at_line F
+GLIBC_2.27 error_message_count D 0x4
+GLIBC_2.27 error_one_per_line D 0x4
+GLIBC_2.27 error_print_progname D 0x4
+GLIBC_2.27 errx F
+GLIBC_2.27 ether_aton F
+GLIBC_2.27 ether_aton_r F
+GLIBC_2.27 ether_hostton F
+GLIBC_2.27 ether_line F
+GLIBC_2.27 ether_ntoa F
+GLIBC_2.27 ether_ntoa_r F
+GLIBC_2.27 ether_ntohost F
+GLIBC_2.27 euidaccess F
+GLIBC_2.27 eventfd F
+GLIBC_2.27 eventfd_read F
+GLIBC_2.27 eventfd_write F
+GLIBC_2.27 execl F
+GLIBC_2.27 execle F
+GLIBC_2.27 execlp F
+GLIBC_2.27 execv F
+GLIBC_2.27 execve F
+GLIBC_2.27 execvp F
+GLIBC_2.27 execvpe F
+GLIBC_2.27 exit F
+GLIBC_2.27 explicit_bzero F
+GLIBC_2.27 faccessat F
+GLIBC_2.27 fallocate F
+GLIBC_2.27 fallocate64 F
+GLIBC_2.27 fanotify_init F
+GLIBC_2.27 fanotify_mark F
+GLIBC_2.27 fattach F
+GLIBC_2.27 fchdir F
+GLIBC_2.27 fchflags F
+GLIBC_2.27 fchmod F
+GLIBC_2.27 fchmodat F
+GLIBC_2.27 fchown F
+GLIBC_2.27 fchownat F
+GLIBC_2.27 fclose F
+GLIBC_2.27 fcloseall F
+GLIBC_2.27 fcntl F
+GLIBC_2.27 fcvt F
+GLIBC_2.27 fcvt_r F
+GLIBC_2.27 fdatasync F
+GLIBC_2.27 fdetach F
+GLIBC_2.27 fdopen F
+GLIBC_2.27 fdopendir F
+GLIBC_2.27 feof F
+GLIBC_2.27 feof_unlocked F
+GLIBC_2.27 ferror F
+GLIBC_2.27 ferror_unlocked F
+GLIBC_2.27 fexecve F
+GLIBC_2.27 fflush F
+GLIBC_2.27 fflush_unlocked F
+GLIBC_2.27 ffs F
+GLIBC_2.27 ffsl F
+GLIBC_2.27 ffsll F
+GLIBC_2.27 fgetc F
+GLIBC_2.27 fgetc_unlocked F
+GLIBC_2.27 fgetgrent F
+GLIBC_2.27 fgetgrent_r F
+GLIBC_2.27 fgetpos F
+GLIBC_2.27 fgetpos64 F
+GLIBC_2.27 fgetpwent F
+GLIBC_2.27 fgetpwent_r F
+GLIBC_2.27 fgets F
+GLIBC_2.27 fgets_unlocked F
+GLIBC_2.27 fgetsgent F
+GLIBC_2.27 fgetsgent_r F
+GLIBC_2.27 fgetspent F
+GLIBC_2.27 fgetspent_r F
+GLIBC_2.27 fgetwc F
+GLIBC_2.27 fgetwc_unlocked F
+GLIBC_2.27 fgetws F
+GLIBC_2.27 fgetws_unlocked F
+GLIBC_2.27 fgetxattr F
+GLIBC_2.27 fileno F
+GLIBC_2.27 fileno_unlocked F
+GLIBC_2.27 finite F
+GLIBC_2.27 finitef F
+GLIBC_2.27 finitel F
+GLIBC_2.27 flistxattr F
+GLIBC_2.27 flock F
+GLIBC_2.27 flockfile F
+GLIBC_2.27 fmemopen F
+GLIBC_2.27 fmtmsg F
+GLIBC_2.27 fnmatch F
+GLIBC_2.27 fopen F
+GLIBC_2.27 fopen64 F
+GLIBC_2.27 fopencookie F
+GLIBC_2.27 fork F
+GLIBC_2.27 fpathconf F
+GLIBC_2.27 fprintf F
+GLIBC_2.27 fputc F
+GLIBC_2.27 fputc_unlocked F
+GLIBC_2.27 fputs F
+GLIBC_2.27 fputs_unlocked F
+GLIBC_2.27 fputwc F
+GLIBC_2.27 fputwc_unlocked F
+GLIBC_2.27 fputws F
+GLIBC_2.27 fputws_unlocked F
+GLIBC_2.27 fread F
+GLIBC_2.27 fread_unlocked F
+GLIBC_2.27 free F
+GLIBC_2.27 freeaddrinfo F
+GLIBC_2.27 freeifaddrs F
+GLIBC_2.27 freelocale F
+GLIBC_2.27 fremovexattr F
+GLIBC_2.27 freopen F
+GLIBC_2.27 freopen64 F
+GLIBC_2.27 frexp F
+GLIBC_2.27 frexpf F
+GLIBC_2.27 frexpl F
+GLIBC_2.27 fscanf F
+GLIBC_2.27 fseek F
+GLIBC_2.27 fseeko F
+GLIBC_2.27 fseeko64 F
+GLIBC_2.27 fsetpos F
+GLIBC_2.27 fsetpos64 F
+GLIBC_2.27 fsetxattr F
+GLIBC_2.27 fstatfs F
+GLIBC_2.27 fstatfs64 F
+GLIBC_2.27 fstatvfs F
+GLIBC_2.27 fstatvfs64 F
+GLIBC_2.27 fsync F
+GLIBC_2.27 ftell F
+GLIBC_2.27 ftello F
+GLIBC_2.27 ftello64 F
+GLIBC_2.27 ftime F
+GLIBC_2.27 ftok F
+GLIBC_2.27 ftruncate F
+GLIBC_2.27 ftruncate64 F
+GLIBC_2.27 ftrylockfile F
+GLIBC_2.27 fts64_children F
+GLIBC_2.27 fts64_close F
+GLIBC_2.27 fts64_open F
+GLIBC_2.27 fts64_read F
+GLIBC_2.27 fts64_set F
+GLIBC_2.27 fts_children F
+GLIBC_2.27 fts_close F
+GLIBC_2.27 fts_open F
+GLIBC_2.27 fts_read F
+GLIBC_2.27 fts_set F
+GLIBC_2.27 ftw F
+GLIBC_2.27 ftw64 F
+GLIBC_2.27 funlockfile F
+GLIBC_2.27 futimens F
+GLIBC_2.27 futimes F
+GLIBC_2.27 futimesat F
+GLIBC_2.27 fwide F
+GLIBC_2.27 fwprintf F
+GLIBC_2.27 fwrite F
+GLIBC_2.27 fwrite_unlocked F
+GLIBC_2.27 fwscanf F
+GLIBC_2.27 gai_strerror F
+GLIBC_2.27 gcvt F
+GLIBC_2.27 get_avphys_pages F
+GLIBC_2.27 get_current_dir_name F
+GLIBC_2.27 get_myaddress F
+GLIBC_2.27 get_nprocs F
+GLIBC_2.27 get_nprocs_conf F
+GLIBC_2.27 get_phys_pages F
+GLIBC_2.27 getaddrinfo F
+GLIBC_2.27 getaliasbyname F
+GLIBC_2.27 getaliasbyname_r F
+GLIBC_2.27 getaliasent F
+GLIBC_2.27 getaliasent_r F
+GLIBC_2.27 getauxval F
+GLIBC_2.27 getc F
+GLIBC_2.27 getc_unlocked F
+GLIBC_2.27 getchar F
+GLIBC_2.27 getchar_unlocked F
+GLIBC_2.27 getcontext F
+GLIBC_2.27 getcwd F
+GLIBC_2.27 getdate F
+GLIBC_2.27 getdate_err D 0x4
+GLIBC_2.27 getdate_r F
+GLIBC_2.27 getdelim F
+GLIBC_2.27 getdirentries F
+GLIBC_2.27 getdirentries64 F
+GLIBC_2.27 getdomainname F
+GLIBC_2.27 getdtablesize F
+GLIBC_2.27 getegid F
+GLIBC_2.27 getentropy F
+GLIBC_2.27 getenv F
+GLIBC_2.27 geteuid F
+GLIBC_2.27 getfsent F
+GLIBC_2.27 getfsfile F
+GLIBC_2.27 getfsspec F
+GLIBC_2.27 getgid F
+GLIBC_2.27 getgrent F
+GLIBC_2.27 getgrent_r F
+GLIBC_2.27 getgrgid F
+GLIBC_2.27 getgrgid_r F
+GLIBC_2.27 getgrnam F
+GLIBC_2.27 getgrnam_r F
+GLIBC_2.27 getgrouplist F
+GLIBC_2.27 getgroups F
+GLIBC_2.27 gethostbyaddr F
+GLIBC_2.27 gethostbyaddr_r F
+GLIBC_2.27 gethostbyname F
+GLIBC_2.27 gethostbyname2 F
+GLIBC_2.27 gethostbyname2_r F
+GLIBC_2.27 gethostbyname_r F
+GLIBC_2.27 gethostent F
+GLIBC_2.27 gethostent_r F
+GLIBC_2.27 gethostid F
+GLIBC_2.27 gethostname F
+GLIBC_2.27 getifaddrs F
+GLIBC_2.27 getipv4sourcefilter F
+GLIBC_2.27 getitimer F
+GLIBC_2.27 getline F
+GLIBC_2.27 getloadavg F
+GLIBC_2.27 getlogin F
+GLIBC_2.27 getlogin_r F
+GLIBC_2.27 getmntent F
+GLIBC_2.27 getmntent_r F
+GLIBC_2.27 getmsg F
+GLIBC_2.27 getnameinfo F
+GLIBC_2.27 getnetbyaddr F
+GLIBC_2.27 getnetbyaddr_r F
+GLIBC_2.27 getnetbyname F
+GLIBC_2.27 getnetbyname_r F
+GLIBC_2.27 getnetent F
+GLIBC_2.27 getnetent_r F
+GLIBC_2.27 getnetgrent F
+GLIBC_2.27 getnetgrent_r F
+GLIBC_2.27 getnetname F
+GLIBC_2.27 getopt F
+GLIBC_2.27 getopt_long F
+GLIBC_2.27 getopt_long_only F
+GLIBC_2.27 getpagesize F
+GLIBC_2.27 getpass F
+GLIBC_2.27 getpeername F
+GLIBC_2.27 getpgid F
+GLIBC_2.27 getpgrp F
+GLIBC_2.27 getpid F
+GLIBC_2.27 getpmsg F
+GLIBC_2.27 getppid F
+GLIBC_2.27 getpriority F
+GLIBC_2.27 getprotobyname F
+GLIBC_2.27 getprotobyname_r F
+GLIBC_2.27 getprotobynumber F
+GLIBC_2.27 getprotobynumber_r F
+GLIBC_2.27 getprotoent F
+GLIBC_2.27 getprotoent_r F
+GLIBC_2.27 getpt F
+GLIBC_2.27 getpublickey F
+GLIBC_2.27 getpw F
+GLIBC_2.27 getpwent F
+GLIBC_2.27 getpwent_r F
+GLIBC_2.27 getpwnam F
+GLIBC_2.27 getpwnam_r F
+GLIBC_2.27 getpwuid F
+GLIBC_2.27 getpwuid_r F
+GLIBC_2.27 getrandom F
+GLIBC_2.27 getresgid F
+GLIBC_2.27 getresuid F
+GLIBC_2.27 getrlimit F
+GLIBC_2.27 getrlimit64 F
+GLIBC_2.27 getrpcbyname F
+GLIBC_2.27 getrpcbyname_r F
+GLIBC_2.27 getrpcbynumber F
+GLIBC_2.27 getrpcbynumber_r F
+GLIBC_2.27 getrpcent F
+GLIBC_2.27 getrpcent_r F
+GLIBC_2.27 getrpcport F
+GLIBC_2.27 getrusage F
+GLIBC_2.27 gets F
+GLIBC_2.27 getsecretkey F
+GLIBC_2.27 getservbyname F
+GLIBC_2.27 getservbyname_r F
+GLIBC_2.27 getservbyport F
+GLIBC_2.27 getservbyport_r F
+GLIBC_2.27 getservent F
+GLIBC_2.27 getservent_r F
+GLIBC_2.27 getsgent F
+GLIBC_2.27 getsgent_r F
+GLIBC_2.27 getsgnam F
+GLIBC_2.27 getsgnam_r F
+GLIBC_2.27 getsid F
+GLIBC_2.27 getsockname F
+GLIBC_2.27 getsockopt F
+GLIBC_2.27 getsourcefilter F
+GLIBC_2.27 getspent F
+GLIBC_2.27 getspent_r F
+GLIBC_2.27 getspnam F
+GLIBC_2.27 getspnam_r F
+GLIBC_2.27 getsubopt F
+GLIBC_2.27 gettext F
+GLIBC_2.27 gettimeofday F
+GLIBC_2.27 getttyent F
+GLIBC_2.27 getttynam F
+GLIBC_2.27 getuid F
+GLIBC_2.27 getusershell F
+GLIBC_2.27 getutent F
+GLIBC_2.27 getutent_r F
+GLIBC_2.27 getutid F
+GLIBC_2.27 getutid_r F
+GLIBC_2.27 getutline F
+GLIBC_2.27 getutline_r F
+GLIBC_2.27 getutmp F
+GLIBC_2.27 getutmpx F
+GLIBC_2.27 getutxent F
+GLIBC_2.27 getutxid F
+GLIBC_2.27 getutxline F
+GLIBC_2.27 getw F
+GLIBC_2.27 getwc F
+GLIBC_2.27 getwc_unlocked F
+GLIBC_2.27 getwchar F
+GLIBC_2.27 getwchar_unlocked F
+GLIBC_2.27 getwd F
+GLIBC_2.27 getxattr F
+GLIBC_2.27 glob F
+GLIBC_2.27 glob64 F
+GLIBC_2.27 glob_pattern_p F
+GLIBC_2.27 globfree F
+GLIBC_2.27 globfree64 F
+GLIBC_2.27 gmtime F
+GLIBC_2.27 gmtime_r F
+GLIBC_2.27 gnu_dev_major F
+GLIBC_2.27 gnu_dev_makedev F
+GLIBC_2.27 gnu_dev_minor F
+GLIBC_2.27 gnu_get_libc_release F
+GLIBC_2.27 gnu_get_libc_version F
+GLIBC_2.27 grantpt F
+GLIBC_2.27 group_member F
+GLIBC_2.27 gsignal F
+GLIBC_2.27 gtty F
+GLIBC_2.27 h_errlist D 0x14
+GLIBC_2.27 h_nerr D 0x4
+GLIBC_2.27 hasmntopt F
+GLIBC_2.27 hcreate F
+GLIBC_2.27 hcreate_r F
+GLIBC_2.27 hdestroy F
+GLIBC_2.27 hdestroy_r F
+GLIBC_2.27 herror F
+GLIBC_2.27 host2netname F
+GLIBC_2.27 hsearch F
+GLIBC_2.27 hsearch_r F
+GLIBC_2.27 hstrerror F
+GLIBC_2.27 htonl F
+GLIBC_2.27 htons F
+GLIBC_2.27 iconv F
+GLIBC_2.27 iconv_close F
+GLIBC_2.27 iconv_open F
+GLIBC_2.27 if_freenameindex F
+GLIBC_2.27 if_indextoname F
+GLIBC_2.27 if_nameindex F
+GLIBC_2.27 if_nametoindex F
+GLIBC_2.27 imaxabs F
+GLIBC_2.27 imaxdiv F
+GLIBC_2.27 in6addr_any D 0x10
+GLIBC_2.27 in6addr_loopback D 0x10
+GLIBC_2.27 index F
+GLIBC_2.27 inet6_opt_append F
+GLIBC_2.27 inet6_opt_find F
+GLIBC_2.27 inet6_opt_finish F
+GLIBC_2.27 inet6_opt_get_val F
+GLIBC_2.27 inet6_opt_init F
+GLIBC_2.27 inet6_opt_next F
+GLIBC_2.27 inet6_opt_set_val F
+GLIBC_2.27 inet6_option_alloc F
+GLIBC_2.27 inet6_option_append F
+GLIBC_2.27 inet6_option_find F
+GLIBC_2.27 inet6_option_init F
+GLIBC_2.27 inet6_option_next F
+GLIBC_2.27 inet6_option_space F
+GLIBC_2.27 inet6_rth_add F
+GLIBC_2.27 inet6_rth_getaddr F
+GLIBC_2.27 inet6_rth_init F
+GLIBC_2.27 inet6_rth_reverse F
+GLIBC_2.27 inet6_rth_segments F
+GLIBC_2.27 inet6_rth_space F
+GLIBC_2.27 inet_addr F
+GLIBC_2.27 inet_aton F
+GLIBC_2.27 inet_lnaof F
+GLIBC_2.27 inet_makeaddr F
+GLIBC_2.27 inet_netof F
+GLIBC_2.27 inet_network F
+GLIBC_2.27 inet_nsap_addr F
+GLIBC_2.27 inet_nsap_ntoa F
+GLIBC_2.27 inet_ntoa F
+GLIBC_2.27 inet_ntop F
+GLIBC_2.27 inet_pton F
+GLIBC_2.27 init_module F
+GLIBC_2.27 initgroups F
+GLIBC_2.27 initstate F
+GLIBC_2.27 initstate_r F
+GLIBC_2.27 innetgr F
+GLIBC_2.27 inotify_add_watch F
+GLIBC_2.27 inotify_init F
+GLIBC_2.27 inotify_init1 F
+GLIBC_2.27 inotify_rm_watch F
+GLIBC_2.27 insque F
+GLIBC_2.27 ioctl F
+GLIBC_2.27 iruserok F
+GLIBC_2.27 iruserok_af F
+GLIBC_2.27 isalnum F
+GLIBC_2.27 isalnum_l F
+GLIBC_2.27 isalpha F
+GLIBC_2.27 isalpha_l F
+GLIBC_2.27 isascii F
+GLIBC_2.27 isastream F
+GLIBC_2.27 isatty F
+GLIBC_2.27 isblank F
+GLIBC_2.27 isblank_l F
+GLIBC_2.27 iscntrl F
+GLIBC_2.27 iscntrl_l F
+GLIBC_2.27 isctype F
+GLIBC_2.27 isdigit F
+GLIBC_2.27 isdigit_l F
+GLIBC_2.27 isfdtype F
+GLIBC_2.27 isgraph F
+GLIBC_2.27 isgraph_l F
+GLIBC_2.27 isinf F
+GLIBC_2.27 isinff F
+GLIBC_2.27 isinfl F
+GLIBC_2.27 islower F
+GLIBC_2.27 islower_l F
+GLIBC_2.27 isnan F
+GLIBC_2.27 isnanf F
+GLIBC_2.27 isnanl F
+GLIBC_2.27 isprint F
+GLIBC_2.27 isprint_l F
+GLIBC_2.27 ispunct F
+GLIBC_2.27 ispunct_l F
+GLIBC_2.27 isspace F
+GLIBC_2.27 isspace_l F
+GLIBC_2.27 isupper F
+GLIBC_2.27 isupper_l F
+GLIBC_2.27 iswalnum F
+GLIBC_2.27 iswalnum_l F
+GLIBC_2.27 iswalpha F
+GLIBC_2.27 iswalpha_l F
+GLIBC_2.27 iswblank F
+GLIBC_2.27 iswblank_l F
+GLIBC_2.27 iswcntrl F
+GLIBC_2.27 iswcntrl_l F
+GLIBC_2.27 iswctype F
+GLIBC_2.27 iswctype_l F
+GLIBC_2.27 iswdigit F
+GLIBC_2.27 iswdigit_l F
+GLIBC_2.27 iswgraph F
+GLIBC_2.27 iswgraph_l F
+GLIBC_2.27 iswlower F
+GLIBC_2.27 iswlower_l F
+GLIBC_2.27 iswprint F
+GLIBC_2.27 iswprint_l F
+GLIBC_2.27 iswpunct F
+GLIBC_2.27 iswpunct_l F
+GLIBC_2.27 iswspace F
+GLIBC_2.27 iswspace_l F
+GLIBC_2.27 iswupper F
+GLIBC_2.27 iswupper_l F
+GLIBC_2.27 iswxdigit F
+GLIBC_2.27 iswxdigit_l F
+GLIBC_2.27 isxdigit F
+GLIBC_2.27 isxdigit_l F
+GLIBC_2.27 jrand48 F
+GLIBC_2.27 jrand48_r F
+GLIBC_2.27 key_decryptsession F
+GLIBC_2.27 key_decryptsession_pk F
+GLIBC_2.27 key_encryptsession F
+GLIBC_2.27 key_encryptsession_pk F
+GLIBC_2.27 key_gendes F
+GLIBC_2.27 key_get_conv F
+GLIBC_2.27 key_secretkey_is_set F
+GLIBC_2.27 key_setnet F
+GLIBC_2.27 key_setsecret F
+GLIBC_2.27 kill F
+GLIBC_2.27 killpg F
+GLIBC_2.27 klogctl F
+GLIBC_2.27 l64a F
+GLIBC_2.27 labs F
+GLIBC_2.27 lchmod F
+GLIBC_2.27 lchown F
+GLIBC_2.27 lckpwdf F
+GLIBC_2.27 lcong48 F
+GLIBC_2.27 lcong48_r F
+GLIBC_2.27 ldexp F
+GLIBC_2.27 ldexpf F
+GLIBC_2.27 ldexpl F
+GLIBC_2.27 ldiv F
+GLIBC_2.27 lfind F
+GLIBC_2.27 lgetxattr F
+GLIBC_2.27 link F
+GLIBC_2.27 linkat F
+GLIBC_2.27 listen F
+GLIBC_2.27 listxattr F
+GLIBC_2.27 llabs F
+GLIBC_2.27 lldiv F
+GLIBC_2.27 llistxattr F
+GLIBC_2.27 llseek F
+GLIBC_2.27 localeconv F
+GLIBC_2.27 localtime F
+GLIBC_2.27 localtime_r F
+GLIBC_2.27 lockf F
+GLIBC_2.27 lockf64 F
+GLIBC_2.27 longjmp F
+GLIBC_2.27 lrand48 F
+GLIBC_2.27 lrand48_r F
+GLIBC_2.27 lremovexattr F
+GLIBC_2.27 lsearch F
+GLIBC_2.27 lseek F
+GLIBC_2.27 lseek64 F
+GLIBC_2.27 lsetxattr F
+GLIBC_2.27 lutimes F
+GLIBC_2.27 madvise F
+GLIBC_2.27 makecontext F
+GLIBC_2.27 mallinfo F
+GLIBC_2.27 malloc F
+GLIBC_2.27 malloc_info F
+GLIBC_2.27 malloc_stats F
+GLIBC_2.27 malloc_trim F
+GLIBC_2.27 malloc_usable_size F
+GLIBC_2.27 mallopt F
+GLIBC_2.27 mallwatch D 0x4
+GLIBC_2.27 mblen F
+GLIBC_2.27 mbrlen F
+GLIBC_2.27 mbrtoc16 F
+GLIBC_2.27 mbrtoc32 F
+GLIBC_2.27 mbrtowc F
+GLIBC_2.27 mbsinit F
+GLIBC_2.27 mbsnrtowcs F
+GLIBC_2.27 mbsrtowcs F
+GLIBC_2.27 mbstowcs F
+GLIBC_2.27 mbtowc F
+GLIBC_2.27 mcheck F
+GLIBC_2.27 mcheck_check_all F
+GLIBC_2.27 mcheck_pedantic F
+GLIBC_2.27 memalign F
+GLIBC_2.27 memccpy F
+GLIBC_2.27 memchr F
+GLIBC_2.27 memcmp F
+GLIBC_2.27 memcpy F
+GLIBC_2.27 memfd_create F
+GLIBC_2.27 memfrob F
+GLIBC_2.27 memmem F
+GLIBC_2.27 memmove F
+GLIBC_2.27 mempcpy F
+GLIBC_2.27 memrchr F
+GLIBC_2.27 memset F
+GLIBC_2.27 mincore F
+GLIBC_2.27 mkdir F
+GLIBC_2.27 mkdirat F
+GLIBC_2.27 mkdtemp F
+GLIBC_2.27 mkfifo F
+GLIBC_2.27 mkfifoat F
+GLIBC_2.27 mkostemp F
+GLIBC_2.27 mkostemp64 F
+GLIBC_2.27 mkostemps F
+GLIBC_2.27 mkostemps64 F
+GLIBC_2.27 mkstemp F
+GLIBC_2.27 mkstemp64 F
+GLIBC_2.27 mkstemps F
+GLIBC_2.27 mkstemps64 F
+GLIBC_2.27 mktemp F
+GLIBC_2.27 mktime F
+GLIBC_2.27 mlock F
+GLIBC_2.27 mlock2 F
+GLIBC_2.27 mlockall F
+GLIBC_2.27 mmap F
+GLIBC_2.27 mmap64 F
+GLIBC_2.27 modf F
+GLIBC_2.27 modff F
+GLIBC_2.27 modfl F
+GLIBC_2.27 moncontrol F
+GLIBC_2.27 monstartup F
+GLIBC_2.27 mount F
+GLIBC_2.27 mprobe F
+GLIBC_2.27 mprotect F
+GLIBC_2.27 mrand48 F
+GLIBC_2.27 mrand48_r F
+GLIBC_2.27 mremap F
+GLIBC_2.27 msgctl F
+GLIBC_2.27 msgget F
+GLIBC_2.27 msgrcv F
+GLIBC_2.27 msgsnd F
+GLIBC_2.27 msync F
+GLIBC_2.27 mtrace F
+GLIBC_2.27 munlock F
+GLIBC_2.27 munlockall F
+GLIBC_2.27 munmap F
+GLIBC_2.27 muntrace F
+GLIBC_2.27 name_to_handle_at F
+GLIBC_2.27 nanosleep F
+GLIBC_2.27 netname2host F
+GLIBC_2.27 netname2user F
+GLIBC_2.27 newlocale F
+GLIBC_2.27 nfsservctl F
+GLIBC_2.27 nftw F
+GLIBC_2.27 nftw64 F
+GLIBC_2.27 ngettext F
+GLIBC_2.27 nice F
+GLIBC_2.27 nl_langinfo F
+GLIBC_2.27 nl_langinfo_l F
+GLIBC_2.27 nrand48 F
+GLIBC_2.27 nrand48_r F
+GLIBC_2.27 ntohl F
+GLIBC_2.27 ntohs F
+GLIBC_2.27 ntp_adjtime F
+GLIBC_2.27 ntp_gettime F
+GLIBC_2.27 ntp_gettimex F
+GLIBC_2.27 obstack_alloc_failed_handler D 0x4
+GLIBC_2.27 obstack_exit_failure D 0x4
+GLIBC_2.27 obstack_free F
+GLIBC_2.27 obstack_printf F
+GLIBC_2.27 obstack_vprintf F
+GLIBC_2.27 on_exit F
+GLIBC_2.27 open F
+GLIBC_2.27 open64 F
+GLIBC_2.27 open_by_handle_at F
+GLIBC_2.27 open_memstream F
+GLIBC_2.27 open_wmemstream F
+GLIBC_2.27 openat F
+GLIBC_2.27 openat64 F
+GLIBC_2.27 opendir F
+GLIBC_2.27 openlog F
+GLIBC_2.27 optarg D 0x4
+GLIBC_2.27 opterr D 0x4
+GLIBC_2.27 optind D 0x4
+GLIBC_2.27 optopt D 0x4
+GLIBC_2.27 parse_printf_format F
+GLIBC_2.27 passwd2des F
+GLIBC_2.27 pathconf F
+GLIBC_2.27 pause F
+GLIBC_2.27 pclose F
+GLIBC_2.27 perror F
+GLIBC_2.27 personality F
+GLIBC_2.27 pipe F
+GLIBC_2.27 pipe2 F
+GLIBC_2.27 pivot_root F
+GLIBC_2.27 pkey_alloc F
+GLIBC_2.27 pkey_free F
+GLIBC_2.27 pkey_get F
+GLIBC_2.27 pkey_mprotect F
+GLIBC_2.27 pkey_set F
+GLIBC_2.27 pmap_getmaps F
+GLIBC_2.27 pmap_getport F
+GLIBC_2.27 pmap_rmtcall F
+GLIBC_2.27 pmap_set F
+GLIBC_2.27 pmap_unset F
+GLIBC_2.27 poll F
+GLIBC_2.27 popen F
+GLIBC_2.27 posix_fadvise F
+GLIBC_2.27 posix_fadvise64 F
+GLIBC_2.27 posix_fallocate F
+GLIBC_2.27 posix_fallocate64 F
+GLIBC_2.27 posix_madvise F
+GLIBC_2.27 posix_memalign F
+GLIBC_2.27 posix_openpt F
+GLIBC_2.27 posix_spawn F
+GLIBC_2.27 posix_spawn_file_actions_addclose F
+GLIBC_2.27 posix_spawn_file_actions_adddup2 F
+GLIBC_2.27 posix_spawn_file_actions_addopen F
+GLIBC_2.27 posix_spawn_file_actions_destroy F
+GLIBC_2.27 posix_spawn_file_actions_init F
+GLIBC_2.27 posix_spawnattr_destroy F
+GLIBC_2.27 posix_spawnattr_getflags F
+GLIBC_2.27 posix_spawnattr_getpgroup F
+GLIBC_2.27 posix_spawnattr_getschedparam F
+GLIBC_2.27 posix_spawnattr_getschedpolicy F
+GLIBC_2.27 posix_spawnattr_getsigdefault F
+GLIBC_2.27 posix_spawnattr_getsigmask F
+GLIBC_2.27 posix_spawnattr_init F
+GLIBC_2.27 posix_spawnattr_setflags F
+GLIBC_2.27 posix_spawnattr_setpgroup F
+GLIBC_2.27 posix_spawnattr_setschedparam F
+GLIBC_2.27 posix_spawnattr_setschedpolicy F
+GLIBC_2.27 posix_spawnattr_setsigdefault F
+GLIBC_2.27 posix_spawnattr_setsigmask F
+GLIBC_2.27 posix_spawnp F
+GLIBC_2.27 ppoll F
+GLIBC_2.27 prctl F
+GLIBC_2.27 pread F
+GLIBC_2.27 pread64 F
+GLIBC_2.27 preadv F
+GLIBC_2.27 preadv2 F
+GLIBC_2.27 preadv64 F
+GLIBC_2.27 preadv64v2 F
+GLIBC_2.27 printf F
+GLIBC_2.27 printf_size F
+GLIBC_2.27 printf_size_info F
+GLIBC_2.27 prlimit F
+GLIBC_2.27 prlimit64 F
+GLIBC_2.27 process_vm_readv F
+GLIBC_2.27 process_vm_writev F
+GLIBC_2.27 profil F
+GLIBC_2.27 program_invocation_name D 0x4
+GLIBC_2.27 program_invocation_short_name D 0x4
+GLIBC_2.27 pselect F
+GLIBC_2.27 psiginfo F
+GLIBC_2.27 psignal F
+GLIBC_2.27 pthread_attr_destroy F
+GLIBC_2.27 pthread_attr_getdetachstate F
+GLIBC_2.27 pthread_attr_getinheritsched F
+GLIBC_2.27 pthread_attr_getschedparam F
+GLIBC_2.27 pthread_attr_getschedpolicy F
+GLIBC_2.27 pthread_attr_getscope F
+GLIBC_2.27 pthread_attr_init F
+GLIBC_2.27 pthread_attr_setdetachstate F
+GLIBC_2.27 pthread_attr_setinheritsched F
+GLIBC_2.27 pthread_attr_setschedparam F
+GLIBC_2.27 pthread_attr_setschedpolicy F
+GLIBC_2.27 pthread_attr_setscope F
+GLIBC_2.27 pthread_cond_broadcast F
+GLIBC_2.27 pthread_cond_destroy F
+GLIBC_2.27 pthread_cond_init F
+GLIBC_2.27 pthread_cond_signal F
+GLIBC_2.27 pthread_cond_timedwait F
+GLIBC_2.27 pthread_cond_wait F
+GLIBC_2.27 pthread_condattr_destroy F
+GLIBC_2.27 pthread_condattr_init F
+GLIBC_2.27 pthread_equal F
+GLIBC_2.27 pthread_exit F
+GLIBC_2.27 pthread_getschedparam F
+GLIBC_2.27 pthread_mutex_destroy F
+GLIBC_2.27 pthread_mutex_init F
+GLIBC_2.27 pthread_mutex_lock F
+GLIBC_2.27 pthread_mutex_unlock F
+GLIBC_2.27 pthread_self F
+GLIBC_2.27 pthread_setcancelstate F
+GLIBC_2.27 pthread_setcanceltype F
+GLIBC_2.27 pthread_setschedparam F
+GLIBC_2.27 ptrace F
+GLIBC_2.27 ptsname F
+GLIBC_2.27 ptsname_r F
+GLIBC_2.27 putc F
+GLIBC_2.27 putc_unlocked F
+GLIBC_2.27 putchar F
+GLIBC_2.27 putchar_unlocked F
+GLIBC_2.27 putenv F
+GLIBC_2.27 putgrent F
+GLIBC_2.27 putmsg F
+GLIBC_2.27 putpmsg F
+GLIBC_2.27 putpwent F
+GLIBC_2.27 puts F
+GLIBC_2.27 putsgent F
+GLIBC_2.27 putspent F
+GLIBC_2.27 pututline F
+GLIBC_2.27 pututxline F
+GLIBC_2.27 putw F
+GLIBC_2.27 putwc F
+GLIBC_2.27 putwc_unlocked F
+GLIBC_2.27 putwchar F
+GLIBC_2.27 putwchar_unlocked F
+GLIBC_2.27 pvalloc F
+GLIBC_2.27 pwrite F
+GLIBC_2.27 pwrite64 F
+GLIBC_2.27 pwritev F
+GLIBC_2.27 pwritev2 F
+GLIBC_2.27 pwritev64 F
+GLIBC_2.27 pwritev64v2 F
+GLIBC_2.27 qecvt F
+GLIBC_2.27 qecvt_r F
+GLIBC_2.27 qfcvt F
+GLIBC_2.27 qfcvt_r F
+GLIBC_2.27 qgcvt F
+GLIBC_2.27 qsort F
+GLIBC_2.27 qsort_r F
+GLIBC_2.27 quick_exit F
+GLIBC_2.27 quotactl F
+GLIBC_2.27 raise F
+GLIBC_2.27 rand F
+GLIBC_2.27 rand_r F
+GLIBC_2.27 random F
+GLIBC_2.27 random_r F
+GLIBC_2.27 rawmemchr F
+GLIBC_2.27 rcmd F
+GLIBC_2.27 rcmd_af F
+GLIBC_2.27 re_comp F
+GLIBC_2.27 re_compile_fastmap F
+GLIBC_2.27 re_compile_pattern F
+GLIBC_2.27 re_exec F
+GLIBC_2.27 re_match F
+GLIBC_2.27 re_match_2 F
+GLIBC_2.27 re_search F
+GLIBC_2.27 re_search_2 F
+GLIBC_2.27 re_set_registers F
+GLIBC_2.27 re_set_syntax F
+GLIBC_2.27 re_syntax_options D 0x4
+GLIBC_2.27 read F
+GLIBC_2.27 readahead F
+GLIBC_2.27 readdir F
+GLIBC_2.27 readdir64 F
+GLIBC_2.27 readdir64_r F
+GLIBC_2.27 readdir_r F
+GLIBC_2.27 readlink F
+GLIBC_2.27 readlinkat F
+GLIBC_2.27 readv F
+GLIBC_2.27 realloc F
+GLIBC_2.27 reallocarray F
+GLIBC_2.27 realpath F
+GLIBC_2.27 reboot F
+GLIBC_2.27 recv F
+GLIBC_2.27 recvfrom F
+GLIBC_2.27 recvmmsg F
+GLIBC_2.27 recvmsg F
+GLIBC_2.27 regcomp F
+GLIBC_2.27 regerror F
+GLIBC_2.27 regexec F
+GLIBC_2.27 regfree F
+GLIBC_2.27 register_printf_function F
+GLIBC_2.27 register_printf_modifier F
+GLIBC_2.27 register_printf_specifier F
+GLIBC_2.27 register_printf_type F
+GLIBC_2.27 registerrpc F
+GLIBC_2.27 remap_file_pages F
+GLIBC_2.27 remove F
+GLIBC_2.27 removexattr F
+GLIBC_2.27 remque F
+GLIBC_2.27 rename F
+GLIBC_2.27 renameat F
+GLIBC_2.27 revoke F
+GLIBC_2.27 rewind F
+GLIBC_2.27 rewinddir F
+GLIBC_2.27 rexec F
+GLIBC_2.27 rexec_af F
+GLIBC_2.27 rexecoptions D 0x4
+GLIBC_2.27 rindex F
+GLIBC_2.27 rmdir F
+GLIBC_2.27 rpc_createerr D 0x10
+GLIBC_2.27 rpmatch F
+GLIBC_2.27 rresvport F
+GLIBC_2.27 rresvport_af F
+GLIBC_2.27 rtime F
+GLIBC_2.27 ruserok F
+GLIBC_2.27 ruserok_af F
+GLIBC_2.27 ruserpass F
+GLIBC_2.27 sbrk F
+GLIBC_2.27 scalbn F
+GLIBC_2.27 scalbnf F
+GLIBC_2.27 scalbnl F
+GLIBC_2.27 scandir F
+GLIBC_2.27 scandir64 F
+GLIBC_2.27 scandirat F
+GLIBC_2.27 scandirat64 F
+GLIBC_2.27 scanf F
+GLIBC_2.27 sched_get_priority_max F
+GLIBC_2.27 sched_get_priority_min F
+GLIBC_2.27 sched_getaffinity F
+GLIBC_2.27 sched_getcpu F
+GLIBC_2.27 sched_getparam F
+GLIBC_2.27 sched_getscheduler F
+GLIBC_2.27 sched_rr_get_interval F
+GLIBC_2.27 sched_setaffinity F
+GLIBC_2.27 sched_setparam F
+GLIBC_2.27 sched_setscheduler F
+GLIBC_2.27 sched_yield F
+GLIBC_2.27 secure_getenv F
+GLIBC_2.27 seed48 F
+GLIBC_2.27 seed48_r F
+GLIBC_2.27 seekdir F
+GLIBC_2.27 select F
+GLIBC_2.27 semctl F
+GLIBC_2.27 semget F
+GLIBC_2.27 semop F
+GLIBC_2.27 semtimedop F
+GLIBC_2.27 send F
+GLIBC_2.27 sendfile F
+GLIBC_2.27 sendfile64 F
+GLIBC_2.27 sendmmsg F
+GLIBC_2.27 sendmsg F
+GLIBC_2.27 sendto F
+GLIBC_2.27 setaliasent F
+GLIBC_2.27 setbuf F
+GLIBC_2.27 setbuffer F
+GLIBC_2.27 setcontext F
+GLIBC_2.27 setdomainname F
+GLIBC_2.27 setegid F
+GLIBC_2.27 setenv F
+GLIBC_2.27 seteuid F
+GLIBC_2.27 setfsent F
+GLIBC_2.27 setfsgid F
+GLIBC_2.27 setfsuid F
+GLIBC_2.27 setgid F
+GLIBC_2.27 setgrent F
+GLIBC_2.27 setgroups F
+GLIBC_2.27 sethostent F
+GLIBC_2.27 sethostid F
+GLIBC_2.27 sethostname F
+GLIBC_2.27 setipv4sourcefilter F
+GLIBC_2.27 setitimer F
+GLIBC_2.27 setjmp F
+GLIBC_2.27 setlinebuf F
+GLIBC_2.27 setlocale F
+GLIBC_2.27 setlogin F
+GLIBC_2.27 setlogmask F
+GLIBC_2.27 setmntent F
+GLIBC_2.27 setnetent F
+GLIBC_2.27 setnetgrent F
+GLIBC_2.27 setns F
+GLIBC_2.27 setpgid F
+GLIBC_2.27 setpgrp F
+GLIBC_2.27 setpriority F
+GLIBC_2.27 setprotoent F
+GLIBC_2.27 setpwent F
+GLIBC_2.27 setregid F
+GLIBC_2.27 setresgid F
+GLIBC_2.27 setresuid F
+GLIBC_2.27 setreuid F
+GLIBC_2.27 setrlimit F
+GLIBC_2.27 setrlimit64 F
+GLIBC_2.27 setrpcent F
+GLIBC_2.27 setservent F
+GLIBC_2.27 setsgent F
+GLIBC_2.27 setsid F
+GLIBC_2.27 setsockopt F
+GLIBC_2.27 setsourcefilter F
+GLIBC_2.27 setspent F
+GLIBC_2.27 setstate F
+GLIBC_2.27 setstate_r F
+GLIBC_2.27 settimeofday F
+GLIBC_2.27 setttyent F
+GLIBC_2.27 setuid F
+GLIBC_2.27 setusershell F
+GLIBC_2.27 setutent F
+GLIBC_2.27 setutxent F
+GLIBC_2.27 setvbuf F
+GLIBC_2.27 setxattr F
+GLIBC_2.27 sgetsgent F
+GLIBC_2.27 sgetsgent_r F
+GLIBC_2.27 sgetspent F
+GLIBC_2.27 sgetspent_r F
+GLIBC_2.27 shmat F
+GLIBC_2.27 shmctl F
+GLIBC_2.27 shmdt F
+GLIBC_2.27 shmget F
+GLIBC_2.27 shutdown F
+GLIBC_2.27 sigaction F
+GLIBC_2.27 sigaddset F
+GLIBC_2.27 sigaltstack F
+GLIBC_2.27 sigandset F
+GLIBC_2.27 sigblock F
+GLIBC_2.27 sigdelset F
+GLIBC_2.27 sigemptyset F
+GLIBC_2.27 sigfillset F
+GLIBC_2.27 siggetmask F
+GLIBC_2.27 sighold F
+GLIBC_2.27 sigignore F
+GLIBC_2.27 siginterrupt F
+GLIBC_2.27 sigisemptyset F
+GLIBC_2.27 sigismember F
+GLIBC_2.27 siglongjmp F
+GLIBC_2.27 signal F
+GLIBC_2.27 signalfd F
+GLIBC_2.27 sigorset F
+GLIBC_2.27 sigpause F
+GLIBC_2.27 sigpending F
+GLIBC_2.27 sigprocmask F
+GLIBC_2.27 sigqueue F
+GLIBC_2.27 sigrelse F
+GLIBC_2.27 sigreturn F
+GLIBC_2.27 sigset F
+GLIBC_2.27 sigsetmask F
+GLIBC_2.27 sigstack F
+GLIBC_2.27 sigsuspend F
+GLIBC_2.27 sigtimedwait F
+GLIBC_2.27 sigwait F
+GLIBC_2.27 sigwaitinfo F
+GLIBC_2.27 sleep F
+GLIBC_2.27 snprintf F
+GLIBC_2.27 sockatmark F
+GLIBC_2.27 socket F
+GLIBC_2.27 socketpair F
+GLIBC_2.27 splice F
+GLIBC_2.27 sprintf F
+GLIBC_2.27 sprofil F
+GLIBC_2.27 srand F
+GLIBC_2.27 srand48 F
+GLIBC_2.27 srand48_r F
+GLIBC_2.27 srandom F
+GLIBC_2.27 srandom_r F
+GLIBC_2.27 sscanf F
+GLIBC_2.27 ssignal F
+GLIBC_2.27 sstk F
+GLIBC_2.27 statfs F
+GLIBC_2.27 statfs64 F
+GLIBC_2.27 statvfs F
+GLIBC_2.27 statvfs64 F
+GLIBC_2.27 stderr D 0x4
+GLIBC_2.27 stdin D 0x4
+GLIBC_2.27 stdout D 0x4
+GLIBC_2.27 stime F
+GLIBC_2.27 stpcpy F
+GLIBC_2.27 stpncpy F
+GLIBC_2.27 strcasecmp F
+GLIBC_2.27 strcasecmp_l F
+GLIBC_2.27 strcasestr F
+GLIBC_2.27 strcat F
+GLIBC_2.27 strchr F
+GLIBC_2.27 strchrnul F
+GLIBC_2.27 strcmp F
+GLIBC_2.27 strcoll F
+GLIBC_2.27 strcoll_l F
+GLIBC_2.27 strcpy F
+GLIBC_2.27 strcspn F
+GLIBC_2.27 strdup F
+GLIBC_2.27 strerror F
+GLIBC_2.27 strerror_l F
+GLIBC_2.27 strerror_r F
+GLIBC_2.27 strfmon F
+GLIBC_2.27 strfmon_l F
+GLIBC_2.27 strfromd F
+GLIBC_2.27 strfromf F
+GLIBC_2.27 strfromf128 F
+GLIBC_2.27 strfromf32 F
+GLIBC_2.27 strfromf32x F
+GLIBC_2.27 strfromf64 F
+GLIBC_2.27 strfromf64x F
+GLIBC_2.27 strfroml F
+GLIBC_2.27 strfry F
+GLIBC_2.27 strftime F
+GLIBC_2.27 strftime_l F
+GLIBC_2.27 strlen F
+GLIBC_2.27 strncasecmp F
+GLIBC_2.27 strncasecmp_l F
+GLIBC_2.27 strncat F
+GLIBC_2.27 strncmp F
+GLIBC_2.27 strncpy F
+GLIBC_2.27 strndup F
+GLIBC_2.27 strnlen F
+GLIBC_2.27 strpbrk F
+GLIBC_2.27 strptime F
+GLIBC_2.27 strptime_l F
+GLIBC_2.27 strrchr F
+GLIBC_2.27 strsep F
+GLIBC_2.27 strsignal F
+GLIBC_2.27 strspn F
+GLIBC_2.27 strstr F
+GLIBC_2.27 strtod F
+GLIBC_2.27 strtod_l F
+GLIBC_2.27 strtof F
+GLIBC_2.27 strtof128 F
+GLIBC_2.27 strtof128_l F
+GLIBC_2.27 strtof32 F
+GLIBC_2.27 strtof32_l F
+GLIBC_2.27 strtof32x F
+GLIBC_2.27 strtof32x_l F
+GLIBC_2.27 strtof64 F
+GLIBC_2.27 strtof64_l F
+GLIBC_2.27 strtof64x F
+GLIBC_2.27 strtof64x_l F
+GLIBC_2.27 strtof_l F
+GLIBC_2.27 strtoimax F
+GLIBC_2.27 strtok F
+GLIBC_2.27 strtok_r F
+GLIBC_2.27 strtol F
+GLIBC_2.27 strtol_l F
+GLIBC_2.27 strtold F
+GLIBC_2.27 strtold_l F
+GLIBC_2.27 strtoll F
+GLIBC_2.27 strtoll_l F
+GLIBC_2.27 strtoq F
+GLIBC_2.27 strtoul F
+GLIBC_2.27 strtoul_l F
+GLIBC_2.27 strtoull F
+GLIBC_2.27 strtoull_l F
+GLIBC_2.27 strtoumax F
+GLIBC_2.27 strtouq F
+GLIBC_2.27 strverscmp F
+GLIBC_2.27 strxfrm F
+GLIBC_2.27 strxfrm_l F
+GLIBC_2.27 stty F
+GLIBC_2.27 svc_exit F
+GLIBC_2.27 svc_fdset D 0x80
+GLIBC_2.27 svc_getreq F
+GLIBC_2.27 svc_getreq_common F
+GLIBC_2.27 svc_getreq_poll F
+GLIBC_2.27 svc_getreqset F
+GLIBC_2.27 svc_max_pollfd D 0x4
+GLIBC_2.27 svc_pollfd D 0x4
+GLIBC_2.27 svc_register F
+GLIBC_2.27 svc_run F
+GLIBC_2.27 svc_sendreply F
+GLIBC_2.27 svc_unregister F
+GLIBC_2.27 svcauthdes_stats D 0xc
+GLIBC_2.27 svcerr_auth F
+GLIBC_2.27 svcerr_decode F
+GLIBC_2.27 svcerr_noproc F
+GLIBC_2.27 svcerr_noprog F
+GLIBC_2.27 svcerr_progvers F
+GLIBC_2.27 svcerr_systemerr F
+GLIBC_2.27 svcerr_weakauth F
+GLIBC_2.27 svcfd_create F
+GLIBC_2.27 svcraw_create F
+GLIBC_2.27 svctcp_create F
+GLIBC_2.27 svcudp_bufcreate F
+GLIBC_2.27 svcudp_create F
+GLIBC_2.27 svcudp_enablecache F
+GLIBC_2.27 svcunix_create F
+GLIBC_2.27 svcunixfd_create F
+GLIBC_2.27 swab F
+GLIBC_2.27 swapcontext F
+GLIBC_2.27 swapoff F
+GLIBC_2.27 swapon F
+GLIBC_2.27 swprintf F
+GLIBC_2.27 swscanf F
+GLIBC_2.27 symlink F
+GLIBC_2.27 symlinkat F
+GLIBC_2.27 sync F
+GLIBC_2.27 sync_file_range F
+GLIBC_2.27 syncfs F
+GLIBC_2.27 sys_errlist D 0x21c
+GLIBC_2.27 sys_nerr D 0x4
+GLIBC_2.27 sys_sigabbrev D 0x104
+GLIBC_2.27 sys_siglist D 0x104
+GLIBC_2.27 syscall F
+GLIBC_2.27 sysconf F
+GLIBC_2.27 sysctl F
+GLIBC_2.27 sysinfo F
+GLIBC_2.27 syslog F
+GLIBC_2.27 system F
+GLIBC_2.27 sysv_signal F
+GLIBC_2.27 tcdrain F
+GLIBC_2.27 tcflow F
+GLIBC_2.27 tcflush F
+GLIBC_2.27 tcgetattr F
+GLIBC_2.27 tcgetpgrp F
+GLIBC_2.27 tcgetsid F
+GLIBC_2.27 tcsendbreak F
+GLIBC_2.27 tcsetattr F
+GLIBC_2.27 tcsetpgrp F
+GLIBC_2.27 tdelete F
+GLIBC_2.27 tdestroy F
+GLIBC_2.27 tee F
+GLIBC_2.27 telldir F
+GLIBC_2.27 tempnam F
+GLIBC_2.27 textdomain F
+GLIBC_2.27 tfind F
+GLIBC_2.27 time F
+GLIBC_2.27 timegm F
+GLIBC_2.27 timelocal F
+GLIBC_2.27 timerfd_create F
+GLIBC_2.27 timerfd_gettime F
+GLIBC_2.27 timerfd_settime F
+GLIBC_2.27 times F
+GLIBC_2.27 timespec_get F
+GLIBC_2.27 timezone D 0x4
+GLIBC_2.27 tmpfile F
+GLIBC_2.27 tmpfile64 F
+GLIBC_2.27 tmpnam F
+GLIBC_2.27 tmpnam_r F
+GLIBC_2.27 toascii F
+GLIBC_2.27 tolower F
+GLIBC_2.27 tolower_l F
+GLIBC_2.27 toupper F
+GLIBC_2.27 toupper_l F
+GLIBC_2.27 towctrans F
+GLIBC_2.27 towctrans_l F
+GLIBC_2.27 towlower F
+GLIBC_2.27 towlower_l F
+GLIBC_2.27 towupper F
+GLIBC_2.27 towupper_l F
+GLIBC_2.27 tr_break F
+GLIBC_2.27 truncate F
+GLIBC_2.27 truncate64 F
+GLIBC_2.27 tsearch F
+GLIBC_2.27 ttyname F
+GLIBC_2.27 ttyname_r F
+GLIBC_2.27 ttyslot F
+GLIBC_2.27 twalk F
+GLIBC_2.27 tzname D 0x8
+GLIBC_2.27 tzset F
+GLIBC_2.27 ualarm F
+GLIBC_2.27 ulckpwdf F
+GLIBC_2.27 ulimit F
+GLIBC_2.27 umask F
+GLIBC_2.27 umount F
+GLIBC_2.27 umount2 F
+GLIBC_2.27 uname F
+GLIBC_2.27 ungetc F
+GLIBC_2.27 ungetwc F
+GLIBC_2.27 unlink F
+GLIBC_2.27 unlinkat F
+GLIBC_2.27 unlockpt F
+GLIBC_2.27 unsetenv F
+GLIBC_2.27 unshare F
+GLIBC_2.27 updwtmp F
+GLIBC_2.27 updwtmpx F
+GLIBC_2.27 uselocale F
+GLIBC_2.27 user2netname F
+GLIBC_2.27 usleep F
+GLIBC_2.27 ustat F
+GLIBC_2.27 utime F
+GLIBC_2.27 utimensat F
+GLIBC_2.27 utimes F
+GLIBC_2.27 utmpname F
+GLIBC_2.27 utmpxname F
+GLIBC_2.27 valloc F
+GLIBC_2.27 vasprintf F
+GLIBC_2.27 vdprintf F
+GLIBC_2.27 verr F
+GLIBC_2.27 verrx F
+GLIBC_2.27 versionsort F
+GLIBC_2.27 versionsort64 F
+GLIBC_2.27 vfork F
+GLIBC_2.27 vfprintf F
+GLIBC_2.27 vfscanf F
+GLIBC_2.27 vfwprintf F
+GLIBC_2.27 vfwscanf F
+GLIBC_2.27 vhangup F
+GLIBC_2.27 vlimit F
+GLIBC_2.27 vmsplice F
+GLIBC_2.27 vprintf F
+GLIBC_2.27 vscanf F
+GLIBC_2.27 vsnprintf F
+GLIBC_2.27 vsprintf F
+GLIBC_2.27 vsscanf F
+GLIBC_2.27 vswprintf F
+GLIBC_2.27 vswscanf F
+GLIBC_2.27 vsyslog F
+GLIBC_2.27 vtimes F
+GLIBC_2.27 vwarn F
+GLIBC_2.27 vwarnx F
+GLIBC_2.27 vwprintf F
+GLIBC_2.27 vwscanf F
+GLIBC_2.27 wait F
+GLIBC_2.27 wait3 F
+GLIBC_2.27 wait4 F
+GLIBC_2.27 waitid F
+GLIBC_2.27 waitpid F
+GLIBC_2.27 warn F
+GLIBC_2.27 warnx F
+GLIBC_2.27 wcpcpy F
+GLIBC_2.27 wcpncpy F
+GLIBC_2.27 wcrtomb F
+GLIBC_2.27 wcscasecmp F
+GLIBC_2.27 wcscasecmp_l F
+GLIBC_2.27 wcscat F
+GLIBC_2.27 wcschr F
+GLIBC_2.27 wcschrnul F
+GLIBC_2.27 wcscmp F
+GLIBC_2.27 wcscoll F
+GLIBC_2.27 wcscoll_l F
+GLIBC_2.27 wcscpy F
+GLIBC_2.27 wcscspn F
+GLIBC_2.27 wcsdup F
+GLIBC_2.27 wcsftime F
+GLIBC_2.27 wcsftime_l F
+GLIBC_2.27 wcslen F
+GLIBC_2.27 wcsncasecmp F
+GLIBC_2.27 wcsncasecmp_l F
+GLIBC_2.27 wcsncat F
+GLIBC_2.27 wcsncmp F
+GLIBC_2.27 wcsncpy F
+GLIBC_2.27 wcsnlen F
+GLIBC_2.27 wcsnrtombs F
+GLIBC_2.27 wcspbrk F
+GLIBC_2.27 wcsrchr F
+GLIBC_2.27 wcsrtombs F
+GLIBC_2.27 wcsspn F
+GLIBC_2.27 wcsstr F
+GLIBC_2.27 wcstod F
+GLIBC_2.27 wcstod_l F
+GLIBC_2.27 wcstof F
+GLIBC_2.27 wcstof128 F
+GLIBC_2.27 wcstof128_l F
+GLIBC_2.27 wcstof32 F
+GLIBC_2.27 wcstof32_l F
+GLIBC_2.27 wcstof32x F
+GLIBC_2.27 wcstof32x_l F
+GLIBC_2.27 wcstof64 F
+GLIBC_2.27 wcstof64_l F
+GLIBC_2.27 wcstof64x F
+GLIBC_2.27 wcstof64x_l F
+GLIBC_2.27 wcstof_l F
+GLIBC_2.27 wcstoimax F
+GLIBC_2.27 wcstok F
+GLIBC_2.27 wcstol F
+GLIBC_2.27 wcstol_l F
+GLIBC_2.27 wcstold F
+GLIBC_2.27 wcstold_l F
+GLIBC_2.27 wcstoll F
+GLIBC_2.27 wcstoll_l F
+GLIBC_2.27 wcstombs F
+GLIBC_2.27 wcstoq F
+GLIBC_2.27 wcstoul F
+GLIBC_2.27 wcstoul_l F
+GLIBC_2.27 wcstoull F
+GLIBC_2.27 wcstoull_l F
+GLIBC_2.27 wcstoumax F
+GLIBC_2.27 wcstouq F
+GLIBC_2.27 wcswcs F
+GLIBC_2.27 wcswidth F
+GLIBC_2.27 wcsxfrm F
+GLIBC_2.27 wcsxfrm_l F
+GLIBC_2.27 wctob F
+GLIBC_2.27 wctomb F
+GLIBC_2.27 wctrans F
+GLIBC_2.27 wctrans_l F
+GLIBC_2.27 wctype F
+GLIBC_2.27 wctype_l F
+GLIBC_2.27 wcwidth F
+GLIBC_2.27 wmemchr F
+GLIBC_2.27 wmemcmp F
+GLIBC_2.27 wmemcpy F
+GLIBC_2.27 wmemmove F
+GLIBC_2.27 wmempcpy F
+GLIBC_2.27 wmemset F
+GLIBC_2.27 wordexp F
+GLIBC_2.27 wordfree F
+GLIBC_2.27 wprintf F
+GLIBC_2.27 write F
+GLIBC_2.27 writev F
+GLIBC_2.27 wscanf F
+GLIBC_2.27 xdecrypt F
+GLIBC_2.27 xdr_accepted_reply F
+GLIBC_2.27 xdr_array F
+GLIBC_2.27 xdr_authdes_cred F
+GLIBC_2.27 xdr_authdes_verf F
+GLIBC_2.27 xdr_authunix_parms F
+GLIBC_2.27 xdr_bool F
+GLIBC_2.27 xdr_bytes F
+GLIBC_2.27 xdr_callhdr F
+GLIBC_2.27 xdr_callmsg F
+GLIBC_2.27 xdr_char F
+GLIBC_2.27 xdr_cryptkeyarg F
+GLIBC_2.27 xdr_cryptkeyarg2 F
+GLIBC_2.27 xdr_cryptkeyres F
+GLIBC_2.27 xdr_des_block F
+GLIBC_2.27 xdr_double F
+GLIBC_2.27 xdr_enum F
+GLIBC_2.27 xdr_float F
+GLIBC_2.27 xdr_free F
+GLIBC_2.27 xdr_getcredres F
+GLIBC_2.27 xdr_hyper F
+GLIBC_2.27 xdr_int F
+GLIBC_2.27 xdr_int16_t F
+GLIBC_2.27 xdr_int32_t F
+GLIBC_2.27 xdr_int64_t F
+GLIBC_2.27 xdr_int8_t F
+GLIBC_2.27 xdr_key_netstarg F
+GLIBC_2.27 xdr_key_netstres F
+GLIBC_2.27 xdr_keybuf F
+GLIBC_2.27 xdr_keystatus F
+GLIBC_2.27 xdr_long F
+GLIBC_2.27 xdr_longlong_t F
+GLIBC_2.27 xdr_netnamestr F
+GLIBC_2.27 xdr_netobj F
+GLIBC_2.27 xdr_opaque F
+GLIBC_2.27 xdr_opaque_auth F
+GLIBC_2.27 xdr_pmap F
+GLIBC_2.27 xdr_pmaplist F
+GLIBC_2.27 xdr_pointer F
+GLIBC_2.27 xdr_quad_t F
+GLIBC_2.27 xdr_reference F
+GLIBC_2.27 xdr_rejected_reply F
+GLIBC_2.27 xdr_replymsg F
+GLIBC_2.27 xdr_rmtcall_args F
+GLIBC_2.27 xdr_rmtcallres F
+GLIBC_2.27 xdr_short F
+GLIBC_2.27 xdr_sizeof F
+GLIBC_2.27 xdr_string F
+GLIBC_2.27 xdr_u_char F
+GLIBC_2.27 xdr_u_hyper F
+GLIBC_2.27 xdr_u_int F
+GLIBC_2.27 xdr_u_long F
+GLIBC_2.27 xdr_u_longlong_t F
+GLIBC_2.27 xdr_u_quad_t F
+GLIBC_2.27 xdr_u_short F
+GLIBC_2.27 xdr_uint16_t F
+GLIBC_2.27 xdr_uint32_t F
+GLIBC_2.27 xdr_uint64_t F
+GLIBC_2.27 xdr_uint8_t F
+GLIBC_2.27 xdr_union F
+GLIBC_2.27 xdr_unixcred F
+GLIBC_2.27 xdr_vector F
+GLIBC_2.27 xdr_void F
+GLIBC_2.27 xdr_wrapstring F
+GLIBC_2.27 xdrmem_create F
+GLIBC_2.27 xdrrec_create F
+GLIBC_2.27 xdrrec_endofrecord F
+GLIBC_2.27 xdrrec_eof F
+GLIBC_2.27 xdrrec_skiprecord F
+GLIBC_2.27 xdrstdio_create F
+GLIBC_2.27 xencrypt F
+GLIBC_2.27 xprt_register F
+GLIBC_2.27 xprt_unregister F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
new file mode 100644
index 000000000000..42af2652a710
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
@@ -0,0 +1,80 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __b64_ntop F
+GLIBC_2.27 __b64_pton F
+GLIBC_2.27 __dn_comp F
+GLIBC_2.27 __dn_count_labels F
+GLIBC_2.27 __dn_expand F
+GLIBC_2.27 __dn_skipname F
+GLIBC_2.27 __fp_nquery F
+GLIBC_2.27 __fp_query F
+GLIBC_2.27 __fp_resstat F
+GLIBC_2.27 __hostalias F
+GLIBC_2.27 __loc_aton F
+GLIBC_2.27 __loc_ntoa F
+GLIBC_2.27 __p_cdname F
+GLIBC_2.27 __p_cdnname F
+GLIBC_2.27 __p_class F
+GLIBC_2.27 __p_class_syms D 0x54
+GLIBC_2.27 __p_fqname F
+GLIBC_2.27 __p_fqnname F
+GLIBC_2.27 __p_option F
+GLIBC_2.27 __p_query F
+GLIBC_2.27 __p_rcode F
+GLIBC_2.27 __p_time F
+GLIBC_2.27 __p_type F
+GLIBC_2.27 __p_type_syms D 0x228
+GLIBC_2.27 __putlong F
+GLIBC_2.27 __putshort F
+GLIBC_2.27 __res_close F
+GLIBC_2.27 __res_dnok F
+GLIBC_2.27 __res_hnok F
+GLIBC_2.27 __res_hostalias F
+GLIBC_2.27 __res_isourserver F
+GLIBC_2.27 __res_mailok F
+GLIBC_2.27 __res_mkquery F
+GLIBC_2.27 __res_nameinquery F
+GLIBC_2.27 __res_nmkquery F
+GLIBC_2.27 __res_nquery F
+GLIBC_2.27 __res_nquerydomain F
+GLIBC_2.27 __res_nsearch F
+GLIBC_2.27 __res_nsend F
+GLIBC_2.27 __res_ownok F
+GLIBC_2.27 __res_queriesmatch F
+GLIBC_2.27 __res_query F
+GLIBC_2.27 __res_querydomain F
+GLIBC_2.27 __res_search F
+GLIBC_2.27 __res_send F
+GLIBC_2.27 __sym_ntop F
+GLIBC_2.27 __sym_ntos F
+GLIBC_2.27 __sym_ston F
+GLIBC_2.27 _getlong F
+GLIBC_2.27 _getshort F
+GLIBC_2.27 inet_net_ntop F
+GLIBC_2.27 inet_net_pton F
+GLIBC_2.27 inet_neta F
+GLIBC_2.27 ns_datetosecs F
+GLIBC_2.27 ns_format_ttl F
+GLIBC_2.27 ns_get16 F
+GLIBC_2.27 ns_get32 F
+GLIBC_2.27 ns_initparse F
+GLIBC_2.27 ns_makecanon F
+GLIBC_2.27 ns_msg_getflag F
+GLIBC_2.27 ns_name_compress F
+GLIBC_2.27 ns_name_ntol F
+GLIBC_2.27 ns_name_ntop F
+GLIBC_2.27 ns_name_pack F
+GLIBC_2.27 ns_name_pton F
+GLIBC_2.27 ns_name_rollback F
+GLIBC_2.27 ns_name_skip F
+GLIBC_2.27 ns_name_uncompress F
+GLIBC_2.27 ns_name_unpack F
+GLIBC_2.27 ns_parse_ttl F
+GLIBC_2.27 ns_parserr F
+GLIBC_2.27 ns_put16 F
+GLIBC_2.27 ns_put32 F
+GLIBC_2.27 ns_samedomain F
+GLIBC_2.27 ns_samename F
+GLIBC_2.27 ns_skiprr F
+GLIBC_2.27 ns_sprintrr F
+GLIBC_2.27 ns_sprintrrf F
+GLIBC_2.27 ns_subdomain F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data b/sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data
new file mode 100644
index 000000000000..ac925ccb3685
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data
@@ -0,0 +1,67 @@
+blkcnt64_t:l
+blkcnt_t:l
+blksize_t:i
+caddr_t:Pc
+clockid_t:i
+clock_t:l
+daddr_t:i
+dev_t:m
+fd_mask:l
+fsblkcnt64_t:m
+fsblkcnt_t:m
+fsfilcnt64_t:m
+fsfilcnt_t:m
+fsid_t:8__fsid_t
+gid_t:j
+id_t:j
+ino64_t:m
+ino_t:m
+int16_t:s
+int32_t:i
+int64_t:l
+int8_t:a
+intptr_t:l
+key_t:i
+loff_t:l
+mode_t:j
+nlink_t:j
+off64_t:l
+off_t:l
+pid_t:i
+pthread_attr_t:14pthread_attr_t
+pthread_barrier_t:17pthread_barrier_t
+pthread_barrierattr_t:21pthread_barrierattr_t
+pthread_cond_t:14pthread_cond_t
+pthread_condattr_t:18pthread_condattr_t
+pthread_key_t:j
+pthread_mutex_t:15pthread_mutex_t
+pthread_mutexattr_t:19pthread_mutexattr_t
+pthread_once_t:i
+pthread_rwlock_t:16pthread_rwlock_t
+pthread_rwlockattr_t:20pthread_rwlockattr_t
+pthread_spinlock_t:i
+pthread_t:m
+quad_t:l
+register_t:l
+rlim64_t:m
+rlim_t:m
+sigset_t:10__sigset_t
+size_t:m
+socklen_t:j
+ssize_t:l
+suseconds_t:l
+time_t:l
+u_char:h
+uid_t:j
+uint:j
+u_int:j
+u_int16_t:t
+u_int32_t:j
+u_int64_t:m
+u_int8_t:h
+ulong:m
+u_long:m
+u_quad_t:m
+useconds_t:j
+ushort:t
+u_short:t
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist
new file mode 100644
index 000000000000..c9ce04c8db81
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist
@@ -0,0 +1,10 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __libc_stack_end D 0x8
+GLIBC_2.27 __stack_chk_guard D 0x8
+GLIBC_2.27 __tls_get_addr F
+GLIBC_2.27 _dl_mcount F
+GLIBC_2.27 _r_debug D 0x28
+GLIBC_2.27 calloc F
+GLIBC_2.27 free F
+GLIBC_2.27 malloc F
+GLIBC_2.27 realloc F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
new file mode 100644
index 000000000000..8ab44ec41f46
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -0,0 +1,2096 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 _Exit F
+GLIBC_2.27 _IO_2_1_stderr_ D 0xe0
+GLIBC_2.27 _IO_2_1_stdin_ D 0xe0
+GLIBC_2.27 _IO_2_1_stdout_ D 0xe0
+GLIBC_2.27 _IO_adjust_column F
+GLIBC_2.27 _IO_adjust_wcolumn F
+GLIBC_2.27 _IO_default_doallocate F
+GLIBC_2.27 _IO_default_finish F
+GLIBC_2.27 _IO_default_pbackfail F
+GLIBC_2.27 _IO_default_uflow F
+GLIBC_2.27 _IO_default_xsgetn F
+GLIBC_2.27 _IO_default_xsputn F
+GLIBC_2.27 _IO_do_write F
+GLIBC_2.27 _IO_doallocbuf F
+GLIBC_2.27 _IO_fclose F
+GLIBC_2.27 _IO_fdopen F
+GLIBC_2.27 _IO_feof F
+GLIBC_2.27 _IO_ferror F
+GLIBC_2.27 _IO_fflush F
+GLIBC_2.27 _IO_fgetpos F
+GLIBC_2.27 _IO_fgetpos64 F
+GLIBC_2.27 _IO_fgets F
+GLIBC_2.27 _IO_file_attach F
+GLIBC_2.27 _IO_file_close F
+GLIBC_2.27 _IO_file_close_it F
+GLIBC_2.27 _IO_file_doallocate F
+GLIBC_2.27 _IO_file_finish F
+GLIBC_2.27 _IO_file_fopen F
+GLIBC_2.27 _IO_file_init F
+GLIBC_2.27 _IO_file_jumps D 0xa8
+GLIBC_2.27 _IO_file_open F
+GLIBC_2.27 _IO_file_overflow F
+GLIBC_2.27 _IO_file_read F
+GLIBC_2.27 _IO_file_seek F
+GLIBC_2.27 _IO_file_seekoff F
+GLIBC_2.27 _IO_file_setbuf F
+GLIBC_2.27 _IO_file_stat F
+GLIBC_2.27 _IO_file_sync F
+GLIBC_2.27 _IO_file_underflow F
+GLIBC_2.27 _IO_file_write F
+GLIBC_2.27 _IO_file_xsputn F
+GLIBC_2.27 _IO_flockfile F
+GLIBC_2.27 _IO_flush_all F
+GLIBC_2.27 _IO_flush_all_linebuffered F
+GLIBC_2.27 _IO_fopen F
+GLIBC_2.27 _IO_fprintf F
+GLIBC_2.27 _IO_fputs F
+GLIBC_2.27 _IO_fread F
+GLIBC_2.27 _IO_free_backup_area F
+GLIBC_2.27 _IO_free_wbackup_area F
+GLIBC_2.27 _IO_fsetpos F
+GLIBC_2.27 _IO_fsetpos64 F
+GLIBC_2.27 _IO_ftell F
+GLIBC_2.27 _IO_ftrylockfile F
+GLIBC_2.27 _IO_funlockfile F
+GLIBC_2.27 _IO_fwrite F
+GLIBC_2.27 _IO_getc F
+GLIBC_2.27 _IO_getline F
+GLIBC_2.27 _IO_getline_info F
+GLIBC_2.27 _IO_gets F
+GLIBC_2.27 _IO_init F
+GLIBC_2.27 _IO_init_marker F
+GLIBC_2.27 _IO_init_wmarker F
+GLIBC_2.27 _IO_iter_begin F
+GLIBC_2.27 _IO_iter_end F
+GLIBC_2.27 _IO_iter_file F
+GLIBC_2.27 _IO_iter_next F
+GLIBC_2.27 _IO_least_wmarker F
+GLIBC_2.27 _IO_link_in F
+GLIBC_2.27 _IO_list_all D 0x8
+GLIBC_2.27 _IO_list_lock F
+GLIBC_2.27 _IO_list_resetlock F
+GLIBC_2.27 _IO_list_unlock F
+GLIBC_2.27 _IO_marker_delta F
+GLIBC_2.27 _IO_marker_difference F
+GLIBC_2.27 _IO_padn F
+GLIBC_2.27 _IO_peekc_locked F
+GLIBC_2.27 _IO_popen F
+GLIBC_2.27 _IO_printf F
+GLIBC_2.27 _IO_proc_close F
+GLIBC_2.27 _IO_proc_open F
+GLIBC_2.27 _IO_putc F
+GLIBC_2.27 _IO_puts F
+GLIBC_2.27 _IO_remove_marker F
+GLIBC_2.27 _IO_seekmark F
+GLIBC_2.27 _IO_seekoff F
+GLIBC_2.27 _IO_seekpos F
+GLIBC_2.27 _IO_seekwmark F
+GLIBC_2.27 _IO_setb F
+GLIBC_2.27 _IO_setbuffer F
+GLIBC_2.27 _IO_setvbuf F
+GLIBC_2.27 _IO_sgetn F
+GLIBC_2.27 _IO_sprintf F
+GLIBC_2.27 _IO_sputbackc F
+GLIBC_2.27 _IO_sputbackwc F
+GLIBC_2.27 _IO_sscanf F
+GLIBC_2.27 _IO_str_init_readonly F
+GLIBC_2.27 _IO_str_init_static F
+GLIBC_2.27 _IO_str_overflow F
+GLIBC_2.27 _IO_str_pbackfail F
+GLIBC_2.27 _IO_str_seekoff F
+GLIBC_2.27 _IO_str_underflow F
+GLIBC_2.27 _IO_sungetc F
+GLIBC_2.27 _IO_sungetwc F
+GLIBC_2.27 _IO_switch_to_get_mode F
+GLIBC_2.27 _IO_switch_to_main_wget_area F
+GLIBC_2.27 _IO_switch_to_wbackup_area F
+GLIBC_2.27 _IO_switch_to_wget_mode F
+GLIBC_2.27 _IO_un_link F
+GLIBC_2.27 _IO_ungetc F
+GLIBC_2.27 _IO_unsave_markers F
+GLIBC_2.27 _IO_unsave_wmarkers F
+GLIBC_2.27 _IO_vfprintf F
+GLIBC_2.27 _IO_vfscanf F
+GLIBC_2.27 _IO_vsprintf F
+GLIBC_2.27 _IO_wdefault_doallocate F
+GLIBC_2.27 _IO_wdefault_finish F
+GLIBC_2.27 _IO_wdefault_pbackfail F
+GLIBC_2.27 _IO_wdefault_uflow F
+GLIBC_2.27 _IO_wdefault_xsgetn F
+GLIBC_2.27 _IO_wdefault_xsputn F
+GLIBC_2.27 _IO_wdo_write F
+GLIBC_2.27 _IO_wdoallocbuf F
+GLIBC_2.27 _IO_wfile_jumps D 0xa8
+GLIBC_2.27 _IO_wfile_overflow F
+GLIBC_2.27 _IO_wfile_seekoff F
+GLIBC_2.27 _IO_wfile_sync F
+GLIBC_2.27 _IO_wfile_underflow F
+GLIBC_2.27 _IO_wfile_xsputn F
+GLIBC_2.27 _IO_wmarker_delta F
+GLIBC_2.27 _IO_wsetb F
+GLIBC_2.27 ___brk_addr D 0x8
+GLIBC_2.27 __adjtimex F
+GLIBC_2.27 __after_morecore_hook D 0x8
+GLIBC_2.27 __argz_count F
+GLIBC_2.27 __argz_next F
+GLIBC_2.27 __argz_stringify F
+GLIBC_2.27 __asprintf F
+GLIBC_2.27 __asprintf_chk F
+GLIBC_2.27 __assert F
+GLIBC_2.27 __assert_fail F
+GLIBC_2.27 __assert_perror_fail F
+GLIBC_2.27 __backtrace F
+GLIBC_2.27 __backtrace_symbols F
+GLIBC_2.27 __backtrace_symbols_fd F
+GLIBC_2.27 __bsd_getpgrp F
+GLIBC_2.27 __bzero F
+GLIBC_2.27 __check_rhosts_file D 0x4
+GLIBC_2.27 __chk_fail F
+GLIBC_2.27 __clone F
+GLIBC_2.27 __close F
+GLIBC_2.27 __cmsg_nxthdr F
+GLIBC_2.27 __confstr_chk F
+GLIBC_2.27 __connect F
+GLIBC_2.27 __ctype_b_loc F
+GLIBC_2.27 __ctype_get_mb_cur_max F
+GLIBC_2.27 __ctype_tolower_loc F
+GLIBC_2.27 __ctype_toupper_loc F
+GLIBC_2.27 __curbrk D 0x8
+GLIBC_2.27 __cxa_at_quick_exit F
+GLIBC_2.27 __cxa_atexit F
+GLIBC_2.27 __cxa_finalize F
+GLIBC_2.27 __cxa_thread_atexit_impl F
+GLIBC_2.27 __cyg_profile_func_enter F
+GLIBC_2.27 __cyg_profile_func_exit F
+GLIBC_2.27 __daylight D 0x4
+GLIBC_2.27 __dcgettext F
+GLIBC_2.27 __default_morecore F
+GLIBC_2.27 __dgettext F
+GLIBC_2.27 __dprintf_chk F
+GLIBC_2.27 __dup2 F
+GLIBC_2.27 __duplocale F
+GLIBC_2.27 __endmntent F
+GLIBC_2.27 __environ D 0x8
+GLIBC_2.27 __errno_location F
+GLIBC_2.27 __explicit_bzero_chk F
+GLIBC_2.27 __fbufsize F
+GLIBC_2.27 __fcntl F
+GLIBC_2.27 __fdelt_chk F
+GLIBC_2.27 __fdelt_warn F
+GLIBC_2.27 __ffs F
+GLIBC_2.27 __fgets_chk F
+GLIBC_2.27 __fgets_unlocked_chk F
+GLIBC_2.27 __fgetws_chk F
+GLIBC_2.27 __fgetws_unlocked_chk F
+GLIBC_2.27 __finite F
+GLIBC_2.27 __finitef F
+GLIBC_2.27 __finitel F
+GLIBC_2.27 __flbf F
+GLIBC_2.27 __fork F
+GLIBC_2.27 __fpending F
+GLIBC_2.27 __fprintf_chk F
+GLIBC_2.27 __fpu_control D 0x4
+GLIBC_2.27 __fpurge F
+GLIBC_2.27 __fread_chk F
+GLIBC_2.27 __fread_unlocked_chk F
+GLIBC_2.27 __freadable F
+GLIBC_2.27 __freading F
+GLIBC_2.27 __free_hook D 0x8
+GLIBC_2.27 __freelocale F
+GLIBC_2.27 __fsetlocking F
+GLIBC_2.27 __fwprintf_chk F
+GLIBC_2.27 __fwritable F
+GLIBC_2.27 __fwriting F
+GLIBC_2.27 __fxstat F
+GLIBC_2.27 __fxstat64 F
+GLIBC_2.27 __fxstatat F
+GLIBC_2.27 __fxstatat64 F
+GLIBC_2.27 __getauxval F
+GLIBC_2.27 __getcwd_chk F
+GLIBC_2.27 __getdelim F
+GLIBC_2.27 __getdomainname_chk F
+GLIBC_2.27 __getgroups_chk F
+GLIBC_2.27 __gethostname_chk F
+GLIBC_2.27 __getlogin_r_chk F
+GLIBC_2.27 __getmntent_r F
+GLIBC_2.27 __getpagesize F
+GLIBC_2.27 __getpgid F
+GLIBC_2.27 __getpid F
+GLIBC_2.27 __gets_chk F
+GLIBC_2.27 __gettimeofday F
+GLIBC_2.27 __getwd_chk F
+GLIBC_2.27 __gmtime_r F
+GLIBC_2.27 __h_errno_location F
+GLIBC_2.27 __isalnum_l F
+GLIBC_2.27 __isalpha_l F
+GLIBC_2.27 __isascii_l F
+GLIBC_2.27 __isblank_l F
+GLIBC_2.27 __iscntrl_l F
+GLIBC_2.27 __isctype F
+GLIBC_2.27 __isdigit_l F
+GLIBC_2.27 __isgraph_l F
+GLIBC_2.27 __isinf F
+GLIBC_2.27 __isinff F
+GLIBC_2.27 __isinfl F
+GLIBC_2.27 __islower_l F
+GLIBC_2.27 __isnan F
+GLIBC_2.27 __isnanf F
+GLIBC_2.27 __isnanl F
+GLIBC_2.27 __isoc99_fscanf F
+GLIBC_2.27 __isoc99_fwscanf F
+GLIBC_2.27 __isoc99_scanf F
+GLIBC_2.27 __isoc99_sscanf F
+GLIBC_2.27 __isoc99_swscanf F
+GLIBC_2.27 __isoc99_vfscanf F
+GLIBC_2.27 __isoc99_vfwscanf F
+GLIBC_2.27 __isoc99_vscanf F
+GLIBC_2.27 __isoc99_vsscanf F
+GLIBC_2.27 __isoc99_vswscanf F
+GLIBC_2.27 __isoc99_vwscanf F
+GLIBC_2.27 __isoc99_wscanf F
+GLIBC_2.27 __isprint_l F
+GLIBC_2.27 __ispunct_l F
+GLIBC_2.27 __isspace_l F
+GLIBC_2.27 __isupper_l F
+GLIBC_2.27 __iswalnum_l F
+GLIBC_2.27 __iswalpha_l F
+GLIBC_2.27 __iswblank_l F
+GLIBC_2.27 __iswcntrl_l F
+GLIBC_2.27 __iswctype F
+GLIBC_2.27 __iswctype_l F
+GLIBC_2.27 __iswdigit_l F
+GLIBC_2.27 __iswgraph_l F
+GLIBC_2.27 __iswlower_l F
+GLIBC_2.27 __iswprint_l F
+GLIBC_2.27 __iswpunct_l F
+GLIBC_2.27 __iswspace_l F
+GLIBC_2.27 __iswupper_l F
+GLIBC_2.27 __iswxdigit_l F
+GLIBC_2.27 __isxdigit_l F
+GLIBC_2.27 __ivaliduser F
+GLIBC_2.27 __key_decryptsession_pk_LOCAL D 0x8
+GLIBC_2.27 __key_encryptsession_pk_LOCAL D 0x8
+GLIBC_2.27 __key_gendes_LOCAL D 0x8
+GLIBC_2.27 __libc_allocate_rtsig F
+GLIBC_2.27 __libc_calloc F
+GLIBC_2.27 __libc_current_sigrtmax F
+GLIBC_2.27 __libc_current_sigrtmin F
+GLIBC_2.27 __libc_free F
+GLIBC_2.27 __libc_freeres F
+GLIBC_2.27 __libc_init_first F
+GLIBC_2.27 __libc_mallinfo F
+GLIBC_2.27 __libc_malloc F
+GLIBC_2.27 __libc_mallopt F
+GLIBC_2.27 __libc_memalign F
+GLIBC_2.27 __libc_pvalloc F
+GLIBC_2.27 __libc_realloc F
+GLIBC_2.27 __libc_sa_len F
+GLIBC_2.27 __libc_start_main F
+GLIBC_2.27 __libc_valloc F
+GLIBC_2.27 __longjmp_chk F
+GLIBC_2.27 __lseek F
+GLIBC_2.27 __lxstat F
+GLIBC_2.27 __lxstat64 F
+GLIBC_2.27 __malloc_hook D 0x8
+GLIBC_2.27 __mbrlen F
+GLIBC_2.27 __mbrtowc F
+GLIBC_2.27 __mbsnrtowcs_chk F
+GLIBC_2.27 __mbsrtowcs_chk F
+GLIBC_2.27 __mbstowcs_chk F
+GLIBC_2.27 __memalign_hook D 0x8
+GLIBC_2.27 __memcpy_chk F
+GLIBC_2.27 __memmove_chk F
+GLIBC_2.27 __mempcpy F
+GLIBC_2.27 __mempcpy_chk F
+GLIBC_2.27 __memset_chk F
+GLIBC_2.27 __monstartup F
+GLIBC_2.27 __morecore D 0x8
+GLIBC_2.27 __nanosleep F
+GLIBC_2.27 __newlocale F
+GLIBC_2.27 __nl_langinfo_l F
+GLIBC_2.27 __nss_configure_lookup F
+GLIBC_2.27 __nss_database_lookup F
+GLIBC_2.27 __nss_hostname_digits_dots F
+GLIBC_2.27 __nss_next F
+GLIBC_2.27 __obstack_printf_chk F
+GLIBC_2.27 __obstack_vprintf_chk F
+GLIBC_2.27 __open F
+GLIBC_2.27 __open64 F
+GLIBC_2.27 __open64_2 F
+GLIBC_2.27 __open_2 F
+GLIBC_2.27 __openat64_2 F
+GLIBC_2.27 __openat_2 F
+GLIBC_2.27 __overflow F
+GLIBC_2.27 __pipe F
+GLIBC_2.27 __poll F
+GLIBC_2.27 __poll_chk F
+GLIBC_2.27 __posix_getopt F
+GLIBC_2.27 __ppoll_chk F
+GLIBC_2.27 __pread64 F
+GLIBC_2.27 __pread64_chk F
+GLIBC_2.27 __pread_chk F
+GLIBC_2.27 __printf_chk F
+GLIBC_2.27 __printf_fp F
+GLIBC_2.27 __profile_frequency F
+GLIBC_2.27 __progname D 0x8
+GLIBC_2.27 __progname_full D 0x8
+GLIBC_2.27 __ptsname_r_chk F
+GLIBC_2.27 __pwrite64 F
+GLIBC_2.27 __rawmemchr F
+GLIBC_2.27 __rcmd_errstr D 0x8
+GLIBC_2.27 __read F
+GLIBC_2.27 __read_chk F
+GLIBC_2.27 __readlink_chk F
+GLIBC_2.27 __readlinkat_chk F
+GLIBC_2.27 __realloc_hook D 0x8
+GLIBC_2.27 __realpath_chk F
+GLIBC_2.27 __recv_chk F
+GLIBC_2.27 __recvfrom_chk F
+GLIBC_2.27 __register_atfork F
+GLIBC_2.27 __res_init F
+GLIBC_2.27 __res_nclose F
+GLIBC_2.27 __res_ninit F
+GLIBC_2.27 __res_randomid F
+GLIBC_2.27 __res_state F
+GLIBC_2.27 __riscv_flush_icache F
+GLIBC_2.27 __rpc_thread_createerr F
+GLIBC_2.27 __rpc_thread_svc_fdset F
+GLIBC_2.27 __rpc_thread_svc_max_pollfd F
+GLIBC_2.27 __rpc_thread_svc_pollfd F
+GLIBC_2.27 __sbrk F
+GLIBC_2.27 __sched_cpualloc F
+GLIBC_2.27 __sched_cpucount F
+GLIBC_2.27 __sched_cpufree F
+GLIBC_2.27 __sched_get_priority_max F
+GLIBC_2.27 __sched_get_priority_min F
+GLIBC_2.27 __sched_getparam F
+GLIBC_2.27 __sched_getscheduler F
+GLIBC_2.27 __sched_setscheduler F
+GLIBC_2.27 __sched_yield F
+GLIBC_2.27 __select F
+GLIBC_2.27 __send F
+GLIBC_2.27 __setmntent F
+GLIBC_2.27 __setpgid F
+GLIBC_2.27 __sigaction F
+GLIBC_2.27 __signbit F
+GLIBC_2.27 __signbitf F
+GLIBC_2.27 __signbitl F
+GLIBC_2.27 __sigpause F
+GLIBC_2.27 __sigsetjmp F
+GLIBC_2.27 __sigsuspend F
+GLIBC_2.27 __snprintf_chk F
+GLIBC_2.27 __sprintf_chk F
+GLIBC_2.27 __stack_chk_fail F
+GLIBC_2.27 __statfs F
+GLIBC_2.27 __stpcpy F
+GLIBC_2.27 __stpcpy_chk F
+GLIBC_2.27 __stpncpy F
+GLIBC_2.27 __stpncpy_chk F
+GLIBC_2.27 __strcasecmp F
+GLIBC_2.27 __strcasecmp_l F
+GLIBC_2.27 __strcasestr F
+GLIBC_2.27 __strcat_chk F
+GLIBC_2.27 __strcoll_l F
+GLIBC_2.27 __strcpy_chk F
+GLIBC_2.27 __strdup F
+GLIBC_2.27 __strerror_r F
+GLIBC_2.27 __strfmon_l F
+GLIBC_2.27 __strftime_l F
+GLIBC_2.27 __strncasecmp_l F
+GLIBC_2.27 __strncat_chk F
+GLIBC_2.27 __strncpy_chk F
+GLIBC_2.27 __strndup F
+GLIBC_2.27 __strsep_g F
+GLIBC_2.27 __strtod_internal F
+GLIBC_2.27 __strtod_l F
+GLIBC_2.27 __strtof_internal F
+GLIBC_2.27 __strtof_l F
+GLIBC_2.27 __strtok_r F
+GLIBC_2.27 __strtol_internal F
+GLIBC_2.27 __strtol_l F
+GLIBC_2.27 __strtold_internal F
+GLIBC_2.27 __strtold_l F
+GLIBC_2.27 __strtoll_internal F
+GLIBC_2.27 __strtoll_l F
+GLIBC_2.27 __strtoul_internal F
+GLIBC_2.27 __strtoul_l F
+GLIBC_2.27 __strtoull_internal F
+GLIBC_2.27 __strtoull_l F
+GLIBC_2.27 __strverscmp F
+GLIBC_2.27 __strxfrm_l F
+GLIBC_2.27 __swprintf_chk F
+GLIBC_2.27 __sysconf F
+GLIBC_2.27 __syslog_chk F
+GLIBC_2.27 __sysv_signal F
+GLIBC_2.27 __timezone D 0x8
+GLIBC_2.27 __toascii_l F
+GLIBC_2.27 __tolower_l F
+GLIBC_2.27 __toupper_l F
+GLIBC_2.27 __towctrans F
+GLIBC_2.27 __towctrans_l F
+GLIBC_2.27 __towlower_l F
+GLIBC_2.27 __towupper_l F
+GLIBC_2.27 __ttyname_r_chk F
+GLIBC_2.27 __tzname D 0x10
+GLIBC_2.27 __uflow F
+GLIBC_2.27 __underflow F
+GLIBC_2.27 __uselocale F
+GLIBC_2.27 __vasprintf_chk F
+GLIBC_2.27 __vdprintf_chk F
+GLIBC_2.27 __vfork F
+GLIBC_2.27 __vfprintf_chk F
+GLIBC_2.27 __vfscanf F
+GLIBC_2.27 __vfwprintf_chk F
+GLIBC_2.27 __vprintf_chk F
+GLIBC_2.27 __vsnprintf F
+GLIBC_2.27 __vsnprintf_chk F
+GLIBC_2.27 __vsprintf_chk F
+GLIBC_2.27 __vsscanf F
+GLIBC_2.27 __vswprintf_chk F
+GLIBC_2.27 __vsyslog_chk F
+GLIBC_2.27 __vwprintf_chk F
+GLIBC_2.27 __wait F
+GLIBC_2.27 __waitpid F
+GLIBC_2.27 __wcpcpy_chk F
+GLIBC_2.27 __wcpncpy_chk F
+GLIBC_2.27 __wcrtomb_chk F
+GLIBC_2.27 __wcscasecmp_l F
+GLIBC_2.27 __wcscat_chk F
+GLIBC_2.27 __wcscoll_l F
+GLIBC_2.27 __wcscpy_chk F
+GLIBC_2.27 __wcsftime_l F
+GLIBC_2.27 __wcsncasecmp_l F
+GLIBC_2.27 __wcsncat_chk F
+GLIBC_2.27 __wcsncpy_chk F
+GLIBC_2.27 __wcsnrtombs_chk F
+GLIBC_2.27 __wcsrtombs_chk F
+GLIBC_2.27 __wcstod_internal F
+GLIBC_2.27 __wcstod_l F
+GLIBC_2.27 __wcstof_internal F
+GLIBC_2.27 __wcstof_l F
+GLIBC_2.27 __wcstol_internal F
+GLIBC_2.27 __wcstol_l F
+GLIBC_2.27 __wcstold_internal F
+GLIBC_2.27 __wcstold_l F
+GLIBC_2.27 __wcstoll_internal F
+GLIBC_2.27 __wcstoll_l F
+GLIBC_2.27 __wcstombs_chk F
+GLIBC_2.27 __wcstoul_internal F
+GLIBC_2.27 __wcstoul_l F
+GLIBC_2.27 __wcstoull_internal F
+GLIBC_2.27 __wcstoull_l F
+GLIBC_2.27 __wcsxfrm_l F
+GLIBC_2.27 __wctomb_chk F
+GLIBC_2.27 __wctrans_l F
+GLIBC_2.27 __wctype_l F
+GLIBC_2.27 __wmemcpy_chk F
+GLIBC_2.27 __wmemmove_chk F
+GLIBC_2.27 __wmempcpy_chk F
+GLIBC_2.27 __wmemset_chk F
+GLIBC_2.27 __woverflow F
+GLIBC_2.27 __wprintf_chk F
+GLIBC_2.27 __write F
+GLIBC_2.27 __wuflow F
+GLIBC_2.27 __wunderflow F
+GLIBC_2.27 __xmknod F
+GLIBC_2.27 __xmknodat F
+GLIBC_2.27 __xpg_basename F
+GLIBC_2.27 __xpg_sigpause F
+GLIBC_2.27 __xpg_strerror_r F
+GLIBC_2.27 __xstat F
+GLIBC_2.27 __xstat64 F
+GLIBC_2.27 _authenticate F
+GLIBC_2.27 _dl_mcount_wrapper F
+GLIBC_2.27 _dl_mcount_wrapper_check F
+GLIBC_2.27 _environ D 0x8
+GLIBC_2.27 _exit F
+GLIBC_2.27 _flushlbf F
+GLIBC_2.27 _libc_intl_domainname D 0x5
+GLIBC_2.27 _longjmp F
+GLIBC_2.27 _mcleanup F
+GLIBC_2.27 _mcount F
+GLIBC_2.27 _nl_default_dirname D 0x12
+GLIBC_2.27 _nl_domain_bindings D 0x8
+GLIBC_2.27 _nl_msg_cat_cntr D 0x4
+GLIBC_2.27 _null_auth D 0x18
+GLIBC_2.27 _obstack_allocated_p F
+GLIBC_2.27 _obstack_begin F
+GLIBC_2.27 _obstack_begin_1 F
+GLIBC_2.27 _obstack_free F
+GLIBC_2.27 _obstack_memory_used F
+GLIBC_2.27 _obstack_newchunk F
+GLIBC_2.27 _res D 0x238
+GLIBC_2.27 _res_hconf D 0x48
+GLIBC_2.27 _rpc_dtablesize F
+GLIBC_2.27 _seterr_reply F
+GLIBC_2.27 _setjmp F
+GLIBC_2.27 _sys_errlist D 0x438
+GLIBC_2.27 _sys_nerr D 0x4
+GLIBC_2.27 _sys_siglist D 0x208
+GLIBC_2.27 _tolower F
+GLIBC_2.27 _toupper F
+GLIBC_2.27 a64l F
+GLIBC_2.27 abort F
+GLIBC_2.27 abs F
+GLIBC_2.27 accept F
+GLIBC_2.27 accept4 F
+GLIBC_2.27 access F
+GLIBC_2.27 acct F
+GLIBC_2.27 addmntent F
+GLIBC_2.27 addseverity F
+GLIBC_2.27 adjtime F
+GLIBC_2.27 adjtimex F
+GLIBC_2.27 alarm F
+GLIBC_2.27 aligned_alloc F
+GLIBC_2.27 alphasort F
+GLIBC_2.27 alphasort64 F
+GLIBC_2.27 argp_err_exit_status D 0x4
+GLIBC_2.27 argp_error F
+GLIBC_2.27 argp_failure F
+GLIBC_2.27 argp_help F
+GLIBC_2.27 argp_parse F
+GLIBC_2.27 argp_program_bug_address D 0x8
+GLIBC_2.27 argp_program_version D 0x8
+GLIBC_2.27 argp_program_version_hook D 0x8
+GLIBC_2.27 argp_state_help F
+GLIBC_2.27 argp_usage F
+GLIBC_2.27 argz_add F
+GLIBC_2.27 argz_add_sep F
+GLIBC_2.27 argz_append F
+GLIBC_2.27 argz_count F
+GLIBC_2.27 argz_create F
+GLIBC_2.27 argz_create_sep F
+GLIBC_2.27 argz_delete F
+GLIBC_2.27 argz_extract F
+GLIBC_2.27 argz_insert F
+GLIBC_2.27 argz_next F
+GLIBC_2.27 argz_replace F
+GLIBC_2.27 argz_stringify F
+GLIBC_2.27 asctime F
+GLIBC_2.27 asctime_r F
+GLIBC_2.27 asprintf F
+GLIBC_2.27 atof F
+GLIBC_2.27 atoi F
+GLIBC_2.27 atol F
+GLIBC_2.27 atoll F
+GLIBC_2.27 authdes_create F
+GLIBC_2.27 authdes_getucred F
+GLIBC_2.27 authdes_pk_create F
+GLIBC_2.27 authnone_create F
+GLIBC_2.27 authunix_create F
+GLIBC_2.27 authunix_create_default F
+GLIBC_2.27 backtrace F
+GLIBC_2.27 backtrace_symbols F
+GLIBC_2.27 backtrace_symbols_fd F
+GLIBC_2.27 basename F
+GLIBC_2.27 bcmp F
+GLIBC_2.27 bcopy F
+GLIBC_2.27 bind F
+GLIBC_2.27 bind_textdomain_codeset F
+GLIBC_2.27 bindresvport F
+GLIBC_2.27 bindtextdomain F
+GLIBC_2.27 brk F
+GLIBC_2.27 bsd_signal F
+GLIBC_2.27 bsearch F
+GLIBC_2.27 btowc F
+GLIBC_2.27 bzero F
+GLIBC_2.27 c16rtomb F
+GLIBC_2.27 c32rtomb F
+GLIBC_2.27 calloc F
+GLIBC_2.27 callrpc F
+GLIBC_2.27 canonicalize_file_name F
+GLIBC_2.27 capget F
+GLIBC_2.27 capset F
+GLIBC_2.27 catclose F
+GLIBC_2.27 catgets F
+GLIBC_2.27 catopen F
+GLIBC_2.27 cbc_crypt F
+GLIBC_2.27 cfgetispeed F
+GLIBC_2.27 cfgetospeed F
+GLIBC_2.27 cfmakeraw F
+GLIBC_2.27 cfsetispeed F
+GLIBC_2.27 cfsetospeed F
+GLIBC_2.27 cfsetspeed F
+GLIBC_2.27 chdir F
+GLIBC_2.27 chflags F
+GLIBC_2.27 chmod F
+GLIBC_2.27 chown F
+GLIBC_2.27 chroot F
+GLIBC_2.27 clearenv F
+GLIBC_2.27 clearerr F
+GLIBC_2.27 clearerr_unlocked F
+GLIBC_2.27 clnt_broadcast F
+GLIBC_2.27 clnt_create F
+GLIBC_2.27 clnt_pcreateerror F
+GLIBC_2.27 clnt_perrno F
+GLIBC_2.27 clnt_perror F
+GLIBC_2.27 clnt_spcreateerror F
+GLIBC_2.27 clnt_sperrno F
+GLIBC_2.27 clnt_sperror F
+GLIBC_2.27 clntraw_create F
+GLIBC_2.27 clnttcp_create F
+GLIBC_2.27 clntudp_bufcreate F
+GLIBC_2.27 clntudp_create F
+GLIBC_2.27 clntunix_create F
+GLIBC_2.27 clock F
+GLIBC_2.27 clock_adjtime F
+GLIBC_2.27 clock_getcpuclockid F
+GLIBC_2.27 clock_getres F
+GLIBC_2.27 clock_gettime F
+GLIBC_2.27 clock_nanosleep F
+GLIBC_2.27 clock_settime F
+GLIBC_2.27 clone F
+GLIBC_2.27 close F
+GLIBC_2.27 closedir F
+GLIBC_2.27 closelog F
+GLIBC_2.27 confstr F
+GLIBC_2.27 connect F
+GLIBC_2.27 copy_file_range F
+GLIBC_2.27 copysign F
+GLIBC_2.27 copysignf F
+GLIBC_2.27 copysignl F
+GLIBC_2.27 creat F
+GLIBC_2.27 creat64 F
+GLIBC_2.27 ctermid F
+GLIBC_2.27 ctime F
+GLIBC_2.27 ctime_r F
+GLIBC_2.27 cuserid F
+GLIBC_2.27 daemon F
+GLIBC_2.27 daylight D 0x4
+GLIBC_2.27 dcgettext F
+GLIBC_2.27 dcngettext F
+GLIBC_2.27 delete_module F
+GLIBC_2.27 des_setparity F
+GLIBC_2.27 dgettext F
+GLIBC_2.27 difftime F
+GLIBC_2.27 dirfd F
+GLIBC_2.27 dirname F
+GLIBC_2.27 div F
+GLIBC_2.27 dl_iterate_phdr F
+GLIBC_2.27 dngettext F
+GLIBC_2.27 dprintf F
+GLIBC_2.27 drand48 F
+GLIBC_2.27 drand48_r F
+GLIBC_2.27 dup F
+GLIBC_2.27 dup2 F
+GLIBC_2.27 dup3 F
+GLIBC_2.27 duplocale F
+GLIBC_2.27 dysize F
+GLIBC_2.27 eaccess F
+GLIBC_2.27 ecb_crypt F
+GLIBC_2.27 ecvt F
+GLIBC_2.27 ecvt_r F
+GLIBC_2.27 endaliasent F
+GLIBC_2.27 endfsent F
+GLIBC_2.27 endgrent F
+GLIBC_2.27 endhostent F
+GLIBC_2.27 endmntent F
+GLIBC_2.27 endnetent F
+GLIBC_2.27 endnetgrent F
+GLIBC_2.27 endprotoent F
+GLIBC_2.27 endpwent F
+GLIBC_2.27 endrpcent F
+GLIBC_2.27 endservent F
+GLIBC_2.27 endsgent F
+GLIBC_2.27 endspent F
+GLIBC_2.27 endttyent F
+GLIBC_2.27 endusershell F
+GLIBC_2.27 endutent F
+GLIBC_2.27 endutxent F
+GLIBC_2.27 environ D 0x8
+GLIBC_2.27 envz_add F
+GLIBC_2.27 envz_entry F
+GLIBC_2.27 envz_get F
+GLIBC_2.27 envz_merge F
+GLIBC_2.27 envz_remove F
+GLIBC_2.27 envz_strip F
+GLIBC_2.27 epoll_create F
+GLIBC_2.27 epoll_create1 F
+GLIBC_2.27 epoll_ctl F
+GLIBC_2.27 epoll_pwait F
+GLIBC_2.27 epoll_wait F
+GLIBC_2.27 erand48 F
+GLIBC_2.27 erand48_r F
+GLIBC_2.27 err F
+GLIBC_2.27 error F
+GLIBC_2.27 error_at_line F
+GLIBC_2.27 error_message_count D 0x4
+GLIBC_2.27 error_one_per_line D 0x4
+GLIBC_2.27 error_print_progname D 0x8
+GLIBC_2.27 errx F
+GLIBC_2.27 ether_aton F
+GLIBC_2.27 ether_aton_r F
+GLIBC_2.27 ether_hostton F
+GLIBC_2.27 ether_line F
+GLIBC_2.27 ether_ntoa F
+GLIBC_2.27 ether_ntoa_r F
+GLIBC_2.27 ether_ntohost F
+GLIBC_2.27 euidaccess F
+GLIBC_2.27 eventfd F
+GLIBC_2.27 eventfd_read F
+GLIBC_2.27 eventfd_write F
+GLIBC_2.27 execl F
+GLIBC_2.27 execle F
+GLIBC_2.27 execlp F
+GLIBC_2.27 execv F
+GLIBC_2.27 execve F
+GLIBC_2.27 execvp F
+GLIBC_2.27 execvpe F
+GLIBC_2.27 exit F
+GLIBC_2.27 explicit_bzero F
+GLIBC_2.27 faccessat F
+GLIBC_2.27 fallocate F
+GLIBC_2.27 fallocate64 F
+GLIBC_2.27 fanotify_init F
+GLIBC_2.27 fanotify_mark F
+GLIBC_2.27 fattach F
+GLIBC_2.27 fchdir F
+GLIBC_2.27 fchflags F
+GLIBC_2.27 fchmod F
+GLIBC_2.27 fchmodat F
+GLIBC_2.27 fchown F
+GLIBC_2.27 fchownat F
+GLIBC_2.27 fclose F
+GLIBC_2.27 fcloseall F
+GLIBC_2.27 fcntl F
+GLIBC_2.27 fcvt F
+GLIBC_2.27 fcvt_r F
+GLIBC_2.27 fdatasync F
+GLIBC_2.27 fdetach F
+GLIBC_2.27 fdopen F
+GLIBC_2.27 fdopendir F
+GLIBC_2.27 feof F
+GLIBC_2.27 feof_unlocked F
+GLIBC_2.27 ferror F
+GLIBC_2.27 ferror_unlocked F
+GLIBC_2.27 fexecve F
+GLIBC_2.27 fflush F
+GLIBC_2.27 fflush_unlocked F
+GLIBC_2.27 ffs F
+GLIBC_2.27 ffsl F
+GLIBC_2.27 ffsll F
+GLIBC_2.27 fgetc F
+GLIBC_2.27 fgetc_unlocked F
+GLIBC_2.27 fgetgrent F
+GLIBC_2.27 fgetgrent_r F
+GLIBC_2.27 fgetpos F
+GLIBC_2.27 fgetpos64 F
+GLIBC_2.27 fgetpwent F
+GLIBC_2.27 fgetpwent_r F
+GLIBC_2.27 fgets F
+GLIBC_2.27 fgets_unlocked F
+GLIBC_2.27 fgetsgent F
+GLIBC_2.27 fgetsgent_r F
+GLIBC_2.27 fgetspent F
+GLIBC_2.27 fgetspent_r F
+GLIBC_2.27 fgetwc F
+GLIBC_2.27 fgetwc_unlocked F
+GLIBC_2.27 fgetws F
+GLIBC_2.27 fgetws_unlocked F
+GLIBC_2.27 fgetxattr F
+GLIBC_2.27 fileno F
+GLIBC_2.27 fileno_unlocked F
+GLIBC_2.27 finite F
+GLIBC_2.27 finitef F
+GLIBC_2.27 finitel F
+GLIBC_2.27 flistxattr F
+GLIBC_2.27 flock F
+GLIBC_2.27 flockfile F
+GLIBC_2.27 fmemopen F
+GLIBC_2.27 fmtmsg F
+GLIBC_2.27 fnmatch F
+GLIBC_2.27 fopen F
+GLIBC_2.27 fopen64 F
+GLIBC_2.27 fopencookie F
+GLIBC_2.27 fork F
+GLIBC_2.27 fpathconf F
+GLIBC_2.27 fprintf F
+GLIBC_2.27 fputc F
+GLIBC_2.27 fputc_unlocked F
+GLIBC_2.27 fputs F
+GLIBC_2.27 fputs_unlocked F
+GLIBC_2.27 fputwc F
+GLIBC_2.27 fputwc_unlocked F
+GLIBC_2.27 fputws F
+GLIBC_2.27 fputws_unlocked F
+GLIBC_2.27 fread F
+GLIBC_2.27 fread_unlocked F
+GLIBC_2.27 free F
+GLIBC_2.27 freeaddrinfo F
+GLIBC_2.27 freeifaddrs F
+GLIBC_2.27 freelocale F
+GLIBC_2.27 fremovexattr F
+GLIBC_2.27 freopen F
+GLIBC_2.27 freopen64 F
+GLIBC_2.27 frexp F
+GLIBC_2.27 frexpf F
+GLIBC_2.27 frexpl F
+GLIBC_2.27 fscanf F
+GLIBC_2.27 fseek F
+GLIBC_2.27 fseeko F
+GLIBC_2.27 fseeko64 F
+GLIBC_2.27 fsetpos F
+GLIBC_2.27 fsetpos64 F
+GLIBC_2.27 fsetxattr F
+GLIBC_2.27 fstatfs F
+GLIBC_2.27 fstatfs64 F
+GLIBC_2.27 fstatvfs F
+GLIBC_2.27 fstatvfs64 F
+GLIBC_2.27 fsync F
+GLIBC_2.27 ftell F
+GLIBC_2.27 ftello F
+GLIBC_2.27 ftello64 F
+GLIBC_2.27 ftime F
+GLIBC_2.27 ftok F
+GLIBC_2.27 ftruncate F
+GLIBC_2.27 ftruncate64 F
+GLIBC_2.27 ftrylockfile F
+GLIBC_2.27 fts64_children F
+GLIBC_2.27 fts64_close F
+GLIBC_2.27 fts64_open F
+GLIBC_2.27 fts64_read F
+GLIBC_2.27 fts64_set F
+GLIBC_2.27 fts_children F
+GLIBC_2.27 fts_close F
+GLIBC_2.27 fts_open F
+GLIBC_2.27 fts_read F
+GLIBC_2.27 fts_set F
+GLIBC_2.27 ftw F
+GLIBC_2.27 ftw64 F
+GLIBC_2.27 funlockfile F
+GLIBC_2.27 futimens F
+GLIBC_2.27 futimes F
+GLIBC_2.27 futimesat F
+GLIBC_2.27 fwide F
+GLIBC_2.27 fwprintf F
+GLIBC_2.27 fwrite F
+GLIBC_2.27 fwrite_unlocked F
+GLIBC_2.27 fwscanf F
+GLIBC_2.27 gai_strerror F
+GLIBC_2.27 gcvt F
+GLIBC_2.27 get_avphys_pages F
+GLIBC_2.27 get_current_dir_name F
+GLIBC_2.27 get_myaddress F
+GLIBC_2.27 get_nprocs F
+GLIBC_2.27 get_nprocs_conf F
+GLIBC_2.27 get_phys_pages F
+GLIBC_2.27 getaddrinfo F
+GLIBC_2.27 getaliasbyname F
+GLIBC_2.27 getaliasbyname_r F
+GLIBC_2.27 getaliasent F
+GLIBC_2.27 getaliasent_r F
+GLIBC_2.27 getauxval F
+GLIBC_2.27 getc F
+GLIBC_2.27 getc_unlocked F
+GLIBC_2.27 getchar F
+GLIBC_2.27 getchar_unlocked F
+GLIBC_2.27 getcontext F
+GLIBC_2.27 getcwd F
+GLIBC_2.27 getdate F
+GLIBC_2.27 getdate_err D 0x4
+GLIBC_2.27 getdate_r F
+GLIBC_2.27 getdelim F
+GLIBC_2.27 getdirentries F
+GLIBC_2.27 getdirentries64 F
+GLIBC_2.27 getdomainname F
+GLIBC_2.27 getdtablesize F
+GLIBC_2.27 getegid F
+GLIBC_2.27 getentropy F
+GLIBC_2.27 getenv F
+GLIBC_2.27 geteuid F
+GLIBC_2.27 getfsent F
+GLIBC_2.27 getfsfile F
+GLIBC_2.27 getfsspec F
+GLIBC_2.27 getgid F
+GLIBC_2.27 getgrent F
+GLIBC_2.27 getgrent_r F
+GLIBC_2.27 getgrgid F
+GLIBC_2.27 getgrgid_r F
+GLIBC_2.27 getgrnam F
+GLIBC_2.27 getgrnam_r F
+GLIBC_2.27 getgrouplist F
+GLIBC_2.27 getgroups F
+GLIBC_2.27 gethostbyaddr F
+GLIBC_2.27 gethostbyaddr_r F
+GLIBC_2.27 gethostbyname F
+GLIBC_2.27 gethostbyname2 F
+GLIBC_2.27 gethostbyname2_r F
+GLIBC_2.27 gethostbyname_r F
+GLIBC_2.27 gethostent F
+GLIBC_2.27 gethostent_r F
+GLIBC_2.27 gethostid F
+GLIBC_2.27 gethostname F
+GLIBC_2.27 getifaddrs F
+GLIBC_2.27 getipv4sourcefilter F
+GLIBC_2.27 getitimer F
+GLIBC_2.27 getline F
+GLIBC_2.27 getloadavg F
+GLIBC_2.27 getlogin F
+GLIBC_2.27 getlogin_r F
+GLIBC_2.27 getmntent F
+GLIBC_2.27 getmntent_r F
+GLIBC_2.27 getmsg F
+GLIBC_2.27 getnameinfo F
+GLIBC_2.27 getnetbyaddr F
+GLIBC_2.27 getnetbyaddr_r F
+GLIBC_2.27 getnetbyname F
+GLIBC_2.27 getnetbyname_r F
+GLIBC_2.27 getnetent F
+GLIBC_2.27 getnetent_r F
+GLIBC_2.27 getnetgrent F
+GLIBC_2.27 getnetgrent_r F
+GLIBC_2.27 getnetname F
+GLIBC_2.27 getopt F
+GLIBC_2.27 getopt_long F
+GLIBC_2.27 getopt_long_only F
+GLIBC_2.27 getpagesize F
+GLIBC_2.27 getpass F
+GLIBC_2.27 getpeername F
+GLIBC_2.27 getpgid F
+GLIBC_2.27 getpgrp F
+GLIBC_2.27 getpid F
+GLIBC_2.27 getpmsg F
+GLIBC_2.27 getppid F
+GLIBC_2.27 getpriority F
+GLIBC_2.27 getprotobyname F
+GLIBC_2.27 getprotobyname_r F
+GLIBC_2.27 getprotobynumber F
+GLIBC_2.27 getprotobynumber_r F
+GLIBC_2.27 getprotoent F
+GLIBC_2.27 getprotoent_r F
+GLIBC_2.27 getpt F
+GLIBC_2.27 getpublickey F
+GLIBC_2.27 getpw F
+GLIBC_2.27 getpwent F
+GLIBC_2.27 getpwent_r F
+GLIBC_2.27 getpwnam F
+GLIBC_2.27 getpwnam_r F
+GLIBC_2.27 getpwuid F
+GLIBC_2.27 getpwuid_r F
+GLIBC_2.27 getrandom F
+GLIBC_2.27 getresgid F
+GLIBC_2.27 getresuid F
+GLIBC_2.27 getrlimit F
+GLIBC_2.27 getrlimit64 F
+GLIBC_2.27 getrpcbyname F
+GLIBC_2.27 getrpcbyname_r F
+GLIBC_2.27 getrpcbynumber F
+GLIBC_2.27 getrpcbynumber_r F
+GLIBC_2.27 getrpcent F
+GLIBC_2.27 getrpcent_r F
+GLIBC_2.27 getrpcport F
+GLIBC_2.27 getrusage F
+GLIBC_2.27 gets F
+GLIBC_2.27 getsecretkey F
+GLIBC_2.27 getservbyname F
+GLIBC_2.27 getservbyname_r F
+GLIBC_2.27 getservbyport F
+GLIBC_2.27 getservbyport_r F
+GLIBC_2.27 getservent F
+GLIBC_2.27 getservent_r F
+GLIBC_2.27 getsgent F
+GLIBC_2.27 getsgent_r F
+GLIBC_2.27 getsgnam F
+GLIBC_2.27 getsgnam_r F
+GLIBC_2.27 getsid F
+GLIBC_2.27 getsockname F
+GLIBC_2.27 getsockopt F
+GLIBC_2.27 getsourcefilter F
+GLIBC_2.27 getspent F
+GLIBC_2.27 getspent_r F
+GLIBC_2.27 getspnam F
+GLIBC_2.27 getspnam_r F
+GLIBC_2.27 getsubopt F
+GLIBC_2.27 gettext F
+GLIBC_2.27 gettimeofday F
+GLIBC_2.27 getttyent F
+GLIBC_2.27 getttynam F
+GLIBC_2.27 getuid F
+GLIBC_2.27 getusershell F
+GLIBC_2.27 getutent F
+GLIBC_2.27 getutent_r F
+GLIBC_2.27 getutid F
+GLIBC_2.27 getutid_r F
+GLIBC_2.27 getutline F
+GLIBC_2.27 getutline_r F
+GLIBC_2.27 getutmp F
+GLIBC_2.27 getutmpx F
+GLIBC_2.27 getutxent F
+GLIBC_2.27 getutxid F
+GLIBC_2.27 getutxline F
+GLIBC_2.27 getw F
+GLIBC_2.27 getwc F
+GLIBC_2.27 getwc_unlocked F
+GLIBC_2.27 getwchar F
+GLIBC_2.27 getwchar_unlocked F
+GLIBC_2.27 getwd F
+GLIBC_2.27 getxattr F
+GLIBC_2.27 glob F
+GLIBC_2.27 glob64 F
+GLIBC_2.27 glob_pattern_p F
+GLIBC_2.27 globfree F
+GLIBC_2.27 globfree64 F
+GLIBC_2.27 gmtime F
+GLIBC_2.27 gmtime_r F
+GLIBC_2.27 gnu_dev_major F
+GLIBC_2.27 gnu_dev_makedev F
+GLIBC_2.27 gnu_dev_minor F
+GLIBC_2.27 gnu_get_libc_release F
+GLIBC_2.27 gnu_get_libc_version F
+GLIBC_2.27 grantpt F
+GLIBC_2.27 group_member F
+GLIBC_2.27 gsignal F
+GLIBC_2.27 gtty F
+GLIBC_2.27 h_errlist D 0x28
+GLIBC_2.27 h_nerr D 0x4
+GLIBC_2.27 hasmntopt F
+GLIBC_2.27 hcreate F
+GLIBC_2.27 hcreate_r F
+GLIBC_2.27 hdestroy F
+GLIBC_2.27 hdestroy_r F
+GLIBC_2.27 herror F
+GLIBC_2.27 host2netname F
+GLIBC_2.27 hsearch F
+GLIBC_2.27 hsearch_r F
+GLIBC_2.27 hstrerror F
+GLIBC_2.27 htonl F
+GLIBC_2.27 htons F
+GLIBC_2.27 iconv F
+GLIBC_2.27 iconv_close F
+GLIBC_2.27 iconv_open F
+GLIBC_2.27 if_freenameindex F
+GLIBC_2.27 if_indextoname F
+GLIBC_2.27 if_nameindex F
+GLIBC_2.27 if_nametoindex F
+GLIBC_2.27 imaxabs F
+GLIBC_2.27 imaxdiv F
+GLIBC_2.27 in6addr_any D 0x10
+GLIBC_2.27 in6addr_loopback D 0x10
+GLIBC_2.27 index F
+GLIBC_2.27 inet6_opt_append F
+GLIBC_2.27 inet6_opt_find F
+GLIBC_2.27 inet6_opt_finish F
+GLIBC_2.27 inet6_opt_get_val F
+GLIBC_2.27 inet6_opt_init F
+GLIBC_2.27 inet6_opt_next F
+GLIBC_2.27 inet6_opt_set_val F
+GLIBC_2.27 inet6_option_alloc F
+GLIBC_2.27 inet6_option_append F
+GLIBC_2.27 inet6_option_find F
+GLIBC_2.27 inet6_option_init F
+GLIBC_2.27 inet6_option_next F
+GLIBC_2.27 inet6_option_space F
+GLIBC_2.27 inet6_rth_add F
+GLIBC_2.27 inet6_rth_getaddr F
+GLIBC_2.27 inet6_rth_init F
+GLIBC_2.27 inet6_rth_reverse F
+GLIBC_2.27 inet6_rth_segments F
+GLIBC_2.27 inet6_rth_space F
+GLIBC_2.27 inet_addr F
+GLIBC_2.27 inet_aton F
+GLIBC_2.27 inet_lnaof F
+GLIBC_2.27 inet_makeaddr F
+GLIBC_2.27 inet_netof F
+GLIBC_2.27 inet_network F
+GLIBC_2.27 inet_nsap_addr F
+GLIBC_2.27 inet_nsap_ntoa F
+GLIBC_2.27 inet_ntoa F
+GLIBC_2.27 inet_ntop F
+GLIBC_2.27 inet_pton F
+GLIBC_2.27 init_module F
+GLIBC_2.27 initgroups F
+GLIBC_2.27 initstate F
+GLIBC_2.27 initstate_r F
+GLIBC_2.27 innetgr F
+GLIBC_2.27 inotify_add_watch F
+GLIBC_2.27 inotify_init F
+GLIBC_2.27 inotify_init1 F
+GLIBC_2.27 inotify_rm_watch F
+GLIBC_2.27 insque F
+GLIBC_2.27 ioctl F
+GLIBC_2.27 iruserok F
+GLIBC_2.27 iruserok_af F
+GLIBC_2.27 isalnum F
+GLIBC_2.27 isalnum_l F
+GLIBC_2.27 isalpha F
+GLIBC_2.27 isalpha_l F
+GLIBC_2.27 isascii F
+GLIBC_2.27 isastream F
+GLIBC_2.27 isatty F
+GLIBC_2.27 isblank F
+GLIBC_2.27 isblank_l F
+GLIBC_2.27 iscntrl F
+GLIBC_2.27 iscntrl_l F
+GLIBC_2.27 isctype F
+GLIBC_2.27 isdigit F
+GLIBC_2.27 isdigit_l F
+GLIBC_2.27 isfdtype F
+GLIBC_2.27 isgraph F
+GLIBC_2.27 isgraph_l F
+GLIBC_2.27 isinf F
+GLIBC_2.27 isinff F
+GLIBC_2.27 isinfl F
+GLIBC_2.27 islower F
+GLIBC_2.27 islower_l F
+GLIBC_2.27 isnan F
+GLIBC_2.27 isnanf F
+GLIBC_2.27 isnanl F
+GLIBC_2.27 isprint F
+GLIBC_2.27 isprint_l F
+GLIBC_2.27 ispunct F
+GLIBC_2.27 ispunct_l F
+GLIBC_2.27 isspace F
+GLIBC_2.27 isspace_l F
+GLIBC_2.27 isupper F
+GLIBC_2.27 isupper_l F
+GLIBC_2.27 iswalnum F
+GLIBC_2.27 iswalnum_l F
+GLIBC_2.27 iswalpha F
+GLIBC_2.27 iswalpha_l F
+GLIBC_2.27 iswblank F
+GLIBC_2.27 iswblank_l F
+GLIBC_2.27 iswcntrl F
+GLIBC_2.27 iswcntrl_l F
+GLIBC_2.27 iswctype F
+GLIBC_2.27 iswctype_l F
+GLIBC_2.27 iswdigit F
+GLIBC_2.27 iswdigit_l F
+GLIBC_2.27 iswgraph F
+GLIBC_2.27 iswgraph_l F
+GLIBC_2.27 iswlower F
+GLIBC_2.27 iswlower_l F
+GLIBC_2.27 iswprint F
+GLIBC_2.27 iswprint_l F
+GLIBC_2.27 iswpunct F
+GLIBC_2.27 iswpunct_l F
+GLIBC_2.27 iswspace F
+GLIBC_2.27 iswspace_l F
+GLIBC_2.27 iswupper F
+GLIBC_2.27 iswupper_l F
+GLIBC_2.27 iswxdigit F
+GLIBC_2.27 iswxdigit_l F
+GLIBC_2.27 isxdigit F
+GLIBC_2.27 isxdigit_l F
+GLIBC_2.27 jrand48 F
+GLIBC_2.27 jrand48_r F
+GLIBC_2.27 key_decryptsession F
+GLIBC_2.27 key_decryptsession_pk F
+GLIBC_2.27 key_encryptsession F
+GLIBC_2.27 key_encryptsession_pk F
+GLIBC_2.27 key_gendes F
+GLIBC_2.27 key_get_conv F
+GLIBC_2.27 key_secretkey_is_set F
+GLIBC_2.27 key_setnet F
+GLIBC_2.27 key_setsecret F
+GLIBC_2.27 kill F
+GLIBC_2.27 killpg F
+GLIBC_2.27 klogctl F
+GLIBC_2.27 l64a F
+GLIBC_2.27 labs F
+GLIBC_2.27 lchmod F
+GLIBC_2.27 lchown F
+GLIBC_2.27 lckpwdf F
+GLIBC_2.27 lcong48 F
+GLIBC_2.27 lcong48_r F
+GLIBC_2.27 ldexp F
+GLIBC_2.27 ldexpf F
+GLIBC_2.27 ldexpl F
+GLIBC_2.27 ldiv F
+GLIBC_2.27 lfind F
+GLIBC_2.27 lgetxattr F
+GLIBC_2.27 link F
+GLIBC_2.27 linkat F
+GLIBC_2.27 listen F
+GLIBC_2.27 listxattr F
+GLIBC_2.27 llabs F
+GLIBC_2.27 lldiv F
+GLIBC_2.27 llistxattr F
+GLIBC_2.27 llseek F
+GLIBC_2.27 localeconv F
+GLIBC_2.27 localtime F
+GLIBC_2.27 localtime_r F
+GLIBC_2.27 lockf F
+GLIBC_2.27 lockf64 F
+GLIBC_2.27 longjmp F
+GLIBC_2.27 lrand48 F
+GLIBC_2.27 lrand48_r F
+GLIBC_2.27 lremovexattr F
+GLIBC_2.27 lsearch F
+GLIBC_2.27 lseek F
+GLIBC_2.27 lseek64 F
+GLIBC_2.27 lsetxattr F
+GLIBC_2.27 lutimes F
+GLIBC_2.27 madvise F
+GLIBC_2.27 makecontext F
+GLIBC_2.27 mallinfo F
+GLIBC_2.27 malloc F
+GLIBC_2.27 malloc_info F
+GLIBC_2.27 malloc_stats F
+GLIBC_2.27 malloc_trim F
+GLIBC_2.27 malloc_usable_size F
+GLIBC_2.27 mallopt F
+GLIBC_2.27 mallwatch D 0x8
+GLIBC_2.27 mblen F
+GLIBC_2.27 mbrlen F
+GLIBC_2.27 mbrtoc16 F
+GLIBC_2.27 mbrtoc32 F
+GLIBC_2.27 mbrtowc F
+GLIBC_2.27 mbsinit F
+GLIBC_2.27 mbsnrtowcs F
+GLIBC_2.27 mbsrtowcs F
+GLIBC_2.27 mbstowcs F
+GLIBC_2.27 mbtowc F
+GLIBC_2.27 mcheck F
+GLIBC_2.27 mcheck_check_all F
+GLIBC_2.27 mcheck_pedantic F
+GLIBC_2.27 memalign F
+GLIBC_2.27 memccpy F
+GLIBC_2.27 memchr F
+GLIBC_2.27 memcmp F
+GLIBC_2.27 memcpy F
+GLIBC_2.27 memfd_create F
+GLIBC_2.27 memfrob F
+GLIBC_2.27 memmem F
+GLIBC_2.27 memmove F
+GLIBC_2.27 mempcpy F
+GLIBC_2.27 memrchr F
+GLIBC_2.27 memset F
+GLIBC_2.27 mincore F
+GLIBC_2.27 mkdir F
+GLIBC_2.27 mkdirat F
+GLIBC_2.27 mkdtemp F
+GLIBC_2.27 mkfifo F
+GLIBC_2.27 mkfifoat F
+GLIBC_2.27 mkostemp F
+GLIBC_2.27 mkostemp64 F
+GLIBC_2.27 mkostemps F
+GLIBC_2.27 mkostemps64 F
+GLIBC_2.27 mkstemp F
+GLIBC_2.27 mkstemp64 F
+GLIBC_2.27 mkstemps F
+GLIBC_2.27 mkstemps64 F
+GLIBC_2.27 mktemp F
+GLIBC_2.27 mktime F
+GLIBC_2.27 mlock F
+GLIBC_2.27 mlock2 F
+GLIBC_2.27 mlockall F
+GLIBC_2.27 mmap F
+GLIBC_2.27 mmap64 F
+GLIBC_2.27 modf F
+GLIBC_2.27 modff F
+GLIBC_2.27 modfl F
+GLIBC_2.27 moncontrol F
+GLIBC_2.27 monstartup F
+GLIBC_2.27 mount F
+GLIBC_2.27 mprobe F
+GLIBC_2.27 mprotect F
+GLIBC_2.27 mrand48 F
+GLIBC_2.27 mrand48_r F
+GLIBC_2.27 mremap F
+GLIBC_2.27 msgctl F
+GLIBC_2.27 msgget F
+GLIBC_2.27 msgrcv F
+GLIBC_2.27 msgsnd F
+GLIBC_2.27 msync F
+GLIBC_2.27 mtrace F
+GLIBC_2.27 munlock F
+GLIBC_2.27 munlockall F
+GLIBC_2.27 munmap F
+GLIBC_2.27 muntrace F
+GLIBC_2.27 name_to_handle_at F
+GLIBC_2.27 nanosleep F
+GLIBC_2.27 netname2host F
+GLIBC_2.27 netname2user F
+GLIBC_2.27 newlocale F
+GLIBC_2.27 nfsservctl F
+GLIBC_2.27 nftw F
+GLIBC_2.27 nftw64 F
+GLIBC_2.27 ngettext F
+GLIBC_2.27 nice F
+GLIBC_2.27 nl_langinfo F
+GLIBC_2.27 nl_langinfo_l F
+GLIBC_2.27 nrand48 F
+GLIBC_2.27 nrand48_r F
+GLIBC_2.27 ntohl F
+GLIBC_2.27 ntohs F
+GLIBC_2.27 ntp_adjtime F
+GLIBC_2.27 ntp_gettime F
+GLIBC_2.27 ntp_gettimex F
+GLIBC_2.27 obstack_alloc_failed_handler D 0x8
+GLIBC_2.27 obstack_exit_failure D 0x4
+GLIBC_2.27 obstack_free F
+GLIBC_2.27 obstack_printf F
+GLIBC_2.27 obstack_vprintf F
+GLIBC_2.27 on_exit F
+GLIBC_2.27 open F
+GLIBC_2.27 open64 F
+GLIBC_2.27 open_by_handle_at F
+GLIBC_2.27 open_memstream F
+GLIBC_2.27 open_wmemstream F
+GLIBC_2.27 openat F
+GLIBC_2.27 openat64 F
+GLIBC_2.27 opendir F
+GLIBC_2.27 openlog F
+GLIBC_2.27 optarg D 0x8
+GLIBC_2.27 opterr D 0x4
+GLIBC_2.27 optind D 0x4
+GLIBC_2.27 optopt D 0x4
+GLIBC_2.27 parse_printf_format F
+GLIBC_2.27 passwd2des F
+GLIBC_2.27 pathconf F
+GLIBC_2.27 pause F
+GLIBC_2.27 pclose F
+GLIBC_2.27 perror F
+GLIBC_2.27 personality F
+GLIBC_2.27 pipe F
+GLIBC_2.27 pipe2 F
+GLIBC_2.27 pivot_root F
+GLIBC_2.27 pkey_alloc F
+GLIBC_2.27 pkey_free F
+GLIBC_2.27 pkey_get F
+GLIBC_2.27 pkey_mprotect F
+GLIBC_2.27 pkey_set F
+GLIBC_2.27 pmap_getmaps F
+GLIBC_2.27 pmap_getport F
+GLIBC_2.27 pmap_rmtcall F
+GLIBC_2.27 pmap_set F
+GLIBC_2.27 pmap_unset F
+GLIBC_2.27 poll F
+GLIBC_2.27 popen F
+GLIBC_2.27 posix_fadvise F
+GLIBC_2.27 posix_fadvise64 F
+GLIBC_2.27 posix_fallocate F
+GLIBC_2.27 posix_fallocate64 F
+GLIBC_2.27 posix_madvise F
+GLIBC_2.27 posix_memalign F
+GLIBC_2.27 posix_openpt F
+GLIBC_2.27 posix_spawn F
+GLIBC_2.27 posix_spawn_file_actions_addclose F
+GLIBC_2.27 posix_spawn_file_actions_adddup2 F
+GLIBC_2.27 posix_spawn_file_actions_addopen F
+GLIBC_2.27 posix_spawn_file_actions_destroy F
+GLIBC_2.27 posix_spawn_file_actions_init F
+GLIBC_2.27 posix_spawnattr_destroy F
+GLIBC_2.27 posix_spawnattr_getflags F
+GLIBC_2.27 posix_spawnattr_getpgroup F
+GLIBC_2.27 posix_spawnattr_getschedparam F
+GLIBC_2.27 posix_spawnattr_getschedpolicy F
+GLIBC_2.27 posix_spawnattr_getsigdefault F
+GLIBC_2.27 posix_spawnattr_getsigmask F
+GLIBC_2.27 posix_spawnattr_init F
+GLIBC_2.27 posix_spawnattr_setflags F
+GLIBC_2.27 posix_spawnattr_setpgroup F
+GLIBC_2.27 posix_spawnattr_setschedparam F
+GLIBC_2.27 posix_spawnattr_setschedpolicy F
+GLIBC_2.27 posix_spawnattr_setsigdefault F
+GLIBC_2.27 posix_spawnattr_setsigmask F
+GLIBC_2.27 posix_spawnp F
+GLIBC_2.27 ppoll F
+GLIBC_2.27 prctl F
+GLIBC_2.27 pread F
+GLIBC_2.27 pread64 F
+GLIBC_2.27 preadv F
+GLIBC_2.27 preadv2 F
+GLIBC_2.27 preadv64 F
+GLIBC_2.27 preadv64v2 F
+GLIBC_2.27 printf F
+GLIBC_2.27 printf_size F
+GLIBC_2.27 printf_size_info F
+GLIBC_2.27 prlimit F
+GLIBC_2.27 prlimit64 F
+GLIBC_2.27 process_vm_readv F
+GLIBC_2.27 process_vm_writev F
+GLIBC_2.27 profil F
+GLIBC_2.27 program_invocation_name D 0x8
+GLIBC_2.27 program_invocation_short_name D 0x8
+GLIBC_2.27 pselect F
+GLIBC_2.27 psiginfo F
+GLIBC_2.27 psignal F
+GLIBC_2.27 pthread_attr_destroy F
+GLIBC_2.27 pthread_attr_getdetachstate F
+GLIBC_2.27 pthread_attr_getinheritsched F
+GLIBC_2.27 pthread_attr_getschedparam F
+GLIBC_2.27 pthread_attr_getschedpolicy F
+GLIBC_2.27 pthread_attr_getscope F
+GLIBC_2.27 pthread_attr_init F
+GLIBC_2.27 pthread_attr_setdetachstate F
+GLIBC_2.27 pthread_attr_setinheritsched F
+GLIBC_2.27 pthread_attr_setschedparam F
+GLIBC_2.27 pthread_attr_setschedpolicy F
+GLIBC_2.27 pthread_attr_setscope F
+GLIBC_2.27 pthread_cond_broadcast F
+GLIBC_2.27 pthread_cond_destroy F
+GLIBC_2.27 pthread_cond_init F
+GLIBC_2.27 pthread_cond_signal F
+GLIBC_2.27 pthread_cond_timedwait F
+GLIBC_2.27 pthread_cond_wait F
+GLIBC_2.27 pthread_condattr_destroy F
+GLIBC_2.27 pthread_condattr_init F
+GLIBC_2.27 pthread_equal F
+GLIBC_2.27 pthread_exit F
+GLIBC_2.27 pthread_getschedparam F
+GLIBC_2.27 pthread_mutex_destroy F
+GLIBC_2.27 pthread_mutex_init F
+GLIBC_2.27 pthread_mutex_lock F
+GLIBC_2.27 pthread_mutex_unlock F
+GLIBC_2.27 pthread_self F
+GLIBC_2.27 pthread_setcancelstate F
+GLIBC_2.27 pthread_setcanceltype F
+GLIBC_2.27 pthread_setschedparam F
+GLIBC_2.27 ptrace F
+GLIBC_2.27 ptsname F
+GLIBC_2.27 ptsname_r F
+GLIBC_2.27 putc F
+GLIBC_2.27 putc_unlocked F
+GLIBC_2.27 putchar F
+GLIBC_2.27 putchar_unlocked F
+GLIBC_2.27 putenv F
+GLIBC_2.27 putgrent F
+GLIBC_2.27 putmsg F
+GLIBC_2.27 putpmsg F
+GLIBC_2.27 putpwent F
+GLIBC_2.27 puts F
+GLIBC_2.27 putsgent F
+GLIBC_2.27 putspent F
+GLIBC_2.27 pututline F
+GLIBC_2.27 pututxline F
+GLIBC_2.27 putw F
+GLIBC_2.27 putwc F
+GLIBC_2.27 putwc_unlocked F
+GLIBC_2.27 putwchar F
+GLIBC_2.27 putwchar_unlocked F
+GLIBC_2.27 pvalloc F
+GLIBC_2.27 pwrite F
+GLIBC_2.27 pwrite64 F
+GLIBC_2.27 pwritev F
+GLIBC_2.27 pwritev2 F
+GLIBC_2.27 pwritev64 F
+GLIBC_2.27 pwritev64v2 F
+GLIBC_2.27 qecvt F
+GLIBC_2.27 qecvt_r F
+GLIBC_2.27 qfcvt F
+GLIBC_2.27 qfcvt_r F
+GLIBC_2.27 qgcvt F
+GLIBC_2.27 qsort F
+GLIBC_2.27 qsort_r F
+GLIBC_2.27 quick_exit F
+GLIBC_2.27 quotactl F
+GLIBC_2.27 raise F
+GLIBC_2.27 rand F
+GLIBC_2.27 rand_r F
+GLIBC_2.27 random F
+GLIBC_2.27 random_r F
+GLIBC_2.27 rawmemchr F
+GLIBC_2.27 rcmd F
+GLIBC_2.27 rcmd_af F
+GLIBC_2.27 re_comp F
+GLIBC_2.27 re_compile_fastmap F
+GLIBC_2.27 re_compile_pattern F
+GLIBC_2.27 re_exec F
+GLIBC_2.27 re_match F
+GLIBC_2.27 re_match_2 F
+GLIBC_2.27 re_search F
+GLIBC_2.27 re_search_2 F
+GLIBC_2.27 re_set_registers F
+GLIBC_2.27 re_set_syntax F
+GLIBC_2.27 re_syntax_options D 0x8
+GLIBC_2.27 read F
+GLIBC_2.27 readahead F
+GLIBC_2.27 readdir F
+GLIBC_2.27 readdir64 F
+GLIBC_2.27 readdir64_r F
+GLIBC_2.27 readdir_r F
+GLIBC_2.27 readlink F
+GLIBC_2.27 readlinkat F
+GLIBC_2.27 readv F
+GLIBC_2.27 realloc F
+GLIBC_2.27 reallocarray F
+GLIBC_2.27 realpath F
+GLIBC_2.27 reboot F
+GLIBC_2.27 recv F
+GLIBC_2.27 recvfrom F
+GLIBC_2.27 recvmmsg F
+GLIBC_2.27 recvmsg F
+GLIBC_2.27 regcomp F
+GLIBC_2.27 regerror F
+GLIBC_2.27 regexec F
+GLIBC_2.27 regfree F
+GLIBC_2.27 register_printf_function F
+GLIBC_2.27 register_printf_modifier F
+GLIBC_2.27 register_printf_specifier F
+GLIBC_2.27 register_printf_type F
+GLIBC_2.27 registerrpc F
+GLIBC_2.27 remap_file_pages F
+GLIBC_2.27 remove F
+GLIBC_2.27 removexattr F
+GLIBC_2.27 remque F
+GLIBC_2.27 rename F
+GLIBC_2.27 renameat F
+GLIBC_2.27 revoke F
+GLIBC_2.27 rewind F
+GLIBC_2.27 rewinddir F
+GLIBC_2.27 rexec F
+GLIBC_2.27 rexec_af F
+GLIBC_2.27 rexecoptions D 0x4
+GLIBC_2.27 rindex F
+GLIBC_2.27 rmdir F
+GLIBC_2.27 rpc_createerr D 0x20
+GLIBC_2.27 rpmatch F
+GLIBC_2.27 rresvport F
+GLIBC_2.27 rresvport_af F
+GLIBC_2.27 rtime F
+GLIBC_2.27 ruserok F
+GLIBC_2.27 ruserok_af F
+GLIBC_2.27 ruserpass F
+GLIBC_2.27 sbrk F
+GLIBC_2.27 scalbn F
+GLIBC_2.27 scalbnf F
+GLIBC_2.27 scalbnl F
+GLIBC_2.27 scandir F
+GLIBC_2.27 scandir64 F
+GLIBC_2.27 scandirat F
+GLIBC_2.27 scandirat64 F
+GLIBC_2.27 scanf F
+GLIBC_2.27 sched_get_priority_max F
+GLIBC_2.27 sched_get_priority_min F
+GLIBC_2.27 sched_getaffinity F
+GLIBC_2.27 sched_getcpu F
+GLIBC_2.27 sched_getparam F
+GLIBC_2.27 sched_getscheduler F
+GLIBC_2.27 sched_rr_get_interval F
+GLIBC_2.27 sched_setaffinity F
+GLIBC_2.27 sched_setparam F
+GLIBC_2.27 sched_setscheduler F
+GLIBC_2.27 sched_yield F
+GLIBC_2.27 secure_getenv F
+GLIBC_2.27 seed48 F
+GLIBC_2.27 seed48_r F
+GLIBC_2.27 seekdir F
+GLIBC_2.27 select F
+GLIBC_2.27 semctl F
+GLIBC_2.27 semget F
+GLIBC_2.27 semop F
+GLIBC_2.27 semtimedop F
+GLIBC_2.27 send F
+GLIBC_2.27 sendfile F
+GLIBC_2.27 sendfile64 F
+GLIBC_2.27 sendmmsg F
+GLIBC_2.27 sendmsg F
+GLIBC_2.27 sendto F
+GLIBC_2.27 setaliasent F
+GLIBC_2.27 setbuf F
+GLIBC_2.27 setbuffer F
+GLIBC_2.27 setcontext F
+GLIBC_2.27 setdomainname F
+GLIBC_2.27 setegid F
+GLIBC_2.27 setenv F
+GLIBC_2.27 seteuid F
+GLIBC_2.27 setfsent F
+GLIBC_2.27 setfsgid F
+GLIBC_2.27 setfsuid F
+GLIBC_2.27 setgid F
+GLIBC_2.27 setgrent F
+GLIBC_2.27 setgroups F
+GLIBC_2.27 sethostent F
+GLIBC_2.27 sethostid F
+GLIBC_2.27 sethostname F
+GLIBC_2.27 setipv4sourcefilter F
+GLIBC_2.27 setitimer F
+GLIBC_2.27 setjmp F
+GLIBC_2.27 setlinebuf F
+GLIBC_2.27 setlocale F
+GLIBC_2.27 setlogin F
+GLIBC_2.27 setlogmask F
+GLIBC_2.27 setmntent F
+GLIBC_2.27 setnetent F
+GLIBC_2.27 setnetgrent F
+GLIBC_2.27 setns F
+GLIBC_2.27 setpgid F
+GLIBC_2.27 setpgrp F
+GLIBC_2.27 setpriority F
+GLIBC_2.27 setprotoent F
+GLIBC_2.27 setpwent F
+GLIBC_2.27 setregid F
+GLIBC_2.27 setresgid F
+GLIBC_2.27 setresuid F
+GLIBC_2.27 setreuid F
+GLIBC_2.27 setrlimit F
+GLIBC_2.27 setrlimit64 F
+GLIBC_2.27 setrpcent F
+GLIBC_2.27 setservent F
+GLIBC_2.27 setsgent F
+GLIBC_2.27 setsid F
+GLIBC_2.27 setsockopt F
+GLIBC_2.27 setsourcefilter F
+GLIBC_2.27 setspent F
+GLIBC_2.27 setstate F
+GLIBC_2.27 setstate_r F
+GLIBC_2.27 settimeofday F
+GLIBC_2.27 setttyent F
+GLIBC_2.27 setuid F
+GLIBC_2.27 setusershell F
+GLIBC_2.27 setutent F
+GLIBC_2.27 setutxent F
+GLIBC_2.27 setvbuf F
+GLIBC_2.27 setxattr F
+GLIBC_2.27 sgetsgent F
+GLIBC_2.27 sgetsgent_r F
+GLIBC_2.27 sgetspent F
+GLIBC_2.27 sgetspent_r F
+GLIBC_2.27 shmat F
+GLIBC_2.27 shmctl F
+GLIBC_2.27 shmdt F
+GLIBC_2.27 shmget F
+GLIBC_2.27 shutdown F
+GLIBC_2.27 sigaction F
+GLIBC_2.27 sigaddset F
+GLIBC_2.27 sigaltstack F
+GLIBC_2.27 sigandset F
+GLIBC_2.27 sigblock F
+GLIBC_2.27 sigdelset F
+GLIBC_2.27 sigemptyset F
+GLIBC_2.27 sigfillset F
+GLIBC_2.27 siggetmask F
+GLIBC_2.27 sighold F
+GLIBC_2.27 sigignore F
+GLIBC_2.27 siginterrupt F
+GLIBC_2.27 sigisemptyset F
+GLIBC_2.27 sigismember F
+GLIBC_2.27 siglongjmp F
+GLIBC_2.27 signal F
+GLIBC_2.27 signalfd F
+GLIBC_2.27 sigorset F
+GLIBC_2.27 sigpause F
+GLIBC_2.27 sigpending F
+GLIBC_2.27 sigprocmask F
+GLIBC_2.27 sigqueue F
+GLIBC_2.27 sigrelse F
+GLIBC_2.27 sigreturn F
+GLIBC_2.27 sigset F
+GLIBC_2.27 sigsetmask F
+GLIBC_2.27 sigstack F
+GLIBC_2.27 sigsuspend F
+GLIBC_2.27 sigtimedwait F
+GLIBC_2.27 sigwait F
+GLIBC_2.27 sigwaitinfo F
+GLIBC_2.27 sleep F
+GLIBC_2.27 snprintf F
+GLIBC_2.27 sockatmark F
+GLIBC_2.27 socket F
+GLIBC_2.27 socketpair F
+GLIBC_2.27 splice F
+GLIBC_2.27 sprintf F
+GLIBC_2.27 sprofil F
+GLIBC_2.27 srand F
+GLIBC_2.27 srand48 F
+GLIBC_2.27 srand48_r F
+GLIBC_2.27 srandom F
+GLIBC_2.27 srandom_r F
+GLIBC_2.27 sscanf F
+GLIBC_2.27 ssignal F
+GLIBC_2.27 sstk F
+GLIBC_2.27 statfs F
+GLIBC_2.27 statfs64 F
+GLIBC_2.27 statvfs F
+GLIBC_2.27 statvfs64 F
+GLIBC_2.27 stderr D 0x8
+GLIBC_2.27 stdin D 0x8
+GLIBC_2.27 stdout D 0x8
+GLIBC_2.27 stime F
+GLIBC_2.27 stpcpy F
+GLIBC_2.27 stpncpy F
+GLIBC_2.27 strcasecmp F
+GLIBC_2.27 strcasecmp_l F
+GLIBC_2.27 strcasestr F
+GLIBC_2.27 strcat F
+GLIBC_2.27 strchr F
+GLIBC_2.27 strchrnul F
+GLIBC_2.27 strcmp F
+GLIBC_2.27 strcoll F
+GLIBC_2.27 strcoll_l F
+GLIBC_2.27 strcpy F
+GLIBC_2.27 strcspn F
+GLIBC_2.27 strdup F
+GLIBC_2.27 strerror F
+GLIBC_2.27 strerror_l F
+GLIBC_2.27 strerror_r F
+GLIBC_2.27 strfmon F
+GLIBC_2.27 strfmon_l F
+GLIBC_2.27 strfromd F
+GLIBC_2.27 strfromf F
+GLIBC_2.27 strfromf128 F
+GLIBC_2.27 strfromf32 F
+GLIBC_2.27 strfromf32x F
+GLIBC_2.27 strfromf64 F
+GLIBC_2.27 strfromf64x F
+GLIBC_2.27 strfroml F
+GLIBC_2.27 strfry F
+GLIBC_2.27 strftime F
+GLIBC_2.27 strftime_l F
+GLIBC_2.27 strlen F
+GLIBC_2.27 strncasecmp F
+GLIBC_2.27 strncasecmp_l F
+GLIBC_2.27 strncat F
+GLIBC_2.27 strncmp F
+GLIBC_2.27 strncpy F
+GLIBC_2.27 strndup F
+GLIBC_2.27 strnlen F
+GLIBC_2.27 strpbrk F
+GLIBC_2.27 strptime F
+GLIBC_2.27 strptime_l F
+GLIBC_2.27 strrchr F
+GLIBC_2.27 strsep F
+GLIBC_2.27 strsignal F
+GLIBC_2.27 strspn F
+GLIBC_2.27 strstr F
+GLIBC_2.27 strtod F
+GLIBC_2.27 strtod_l F
+GLIBC_2.27 strtof F
+GLIBC_2.27 strtof128 F
+GLIBC_2.27 strtof128_l F
+GLIBC_2.27 strtof32 F
+GLIBC_2.27 strtof32_l F
+GLIBC_2.27 strtof32x F
+GLIBC_2.27 strtof32x_l F
+GLIBC_2.27 strtof64 F
+GLIBC_2.27 strtof64_l F
+GLIBC_2.27 strtof64x F
+GLIBC_2.27 strtof64x_l F
+GLIBC_2.27 strtof_l F
+GLIBC_2.27 strtoimax F
+GLIBC_2.27 strtok F
+GLIBC_2.27 strtok_r F
+GLIBC_2.27 strtol F
+GLIBC_2.27 strtol_l F
+GLIBC_2.27 strtold F
+GLIBC_2.27 strtold_l F
+GLIBC_2.27 strtoll F
+GLIBC_2.27 strtoll_l F
+GLIBC_2.27 strtoq F
+GLIBC_2.27 strtoul F
+GLIBC_2.27 strtoul_l F
+GLIBC_2.27 strtoull F
+GLIBC_2.27 strtoull_l F
+GLIBC_2.27 strtoumax F
+GLIBC_2.27 strtouq F
+GLIBC_2.27 strverscmp F
+GLIBC_2.27 strxfrm F
+GLIBC_2.27 strxfrm_l F
+GLIBC_2.27 stty F
+GLIBC_2.27 svc_exit F
+GLIBC_2.27 svc_fdset D 0x80
+GLIBC_2.27 svc_getreq F
+GLIBC_2.27 svc_getreq_common F
+GLIBC_2.27 svc_getreq_poll F
+GLIBC_2.27 svc_getreqset F
+GLIBC_2.27 svc_max_pollfd D 0x4
+GLIBC_2.27 svc_pollfd D 0x8
+GLIBC_2.27 svc_register F
+GLIBC_2.27 svc_run F
+GLIBC_2.27 svc_sendreply F
+GLIBC_2.27 svc_unregister F
+GLIBC_2.27 svcauthdes_stats D 0x18
+GLIBC_2.27 svcerr_auth F
+GLIBC_2.27 svcerr_decode F
+GLIBC_2.27 svcerr_noproc F
+GLIBC_2.27 svcerr_noprog F
+GLIBC_2.27 svcerr_progvers F
+GLIBC_2.27 svcerr_systemerr F
+GLIBC_2.27 svcerr_weakauth F
+GLIBC_2.27 svcfd_create F
+GLIBC_2.27 svcraw_create F
+GLIBC_2.27 svctcp_create F
+GLIBC_2.27 svcudp_bufcreate F
+GLIBC_2.27 svcudp_create F
+GLIBC_2.27 svcudp_enablecache F
+GLIBC_2.27 svcunix_create F
+GLIBC_2.27 svcunixfd_create F
+GLIBC_2.27 swab F
+GLIBC_2.27 swapcontext F
+GLIBC_2.27 swapoff F
+GLIBC_2.27 swapon F
+GLIBC_2.27 swprintf F
+GLIBC_2.27 swscanf F
+GLIBC_2.27 symlink F
+GLIBC_2.27 symlinkat F
+GLIBC_2.27 sync F
+GLIBC_2.27 sync_file_range F
+GLIBC_2.27 syncfs F
+GLIBC_2.27 sys_errlist D 0x438
+GLIBC_2.27 sys_nerr D 0x4
+GLIBC_2.27 sys_sigabbrev D 0x208
+GLIBC_2.27 sys_siglist D 0x208
+GLIBC_2.27 syscall F
+GLIBC_2.27 sysconf F
+GLIBC_2.27 sysctl F
+GLIBC_2.27 sysinfo F
+GLIBC_2.27 syslog F
+GLIBC_2.27 system F
+GLIBC_2.27 sysv_signal F
+GLIBC_2.27 tcdrain F
+GLIBC_2.27 tcflow F
+GLIBC_2.27 tcflush F
+GLIBC_2.27 tcgetattr F
+GLIBC_2.27 tcgetpgrp F
+GLIBC_2.27 tcgetsid F
+GLIBC_2.27 tcsendbreak F
+GLIBC_2.27 tcsetattr F
+GLIBC_2.27 tcsetpgrp F
+GLIBC_2.27 tdelete F
+GLIBC_2.27 tdestroy F
+GLIBC_2.27 tee F
+GLIBC_2.27 telldir F
+GLIBC_2.27 tempnam F
+GLIBC_2.27 textdomain F
+GLIBC_2.27 tfind F
+GLIBC_2.27 time F
+GLIBC_2.27 timegm F
+GLIBC_2.27 timelocal F
+GLIBC_2.27 timerfd_create F
+GLIBC_2.27 timerfd_gettime F
+GLIBC_2.27 timerfd_settime F
+GLIBC_2.27 times F
+GLIBC_2.27 timespec_get F
+GLIBC_2.27 timezone D 0x8
+GLIBC_2.27 tmpfile F
+GLIBC_2.27 tmpfile64 F
+GLIBC_2.27 tmpnam F
+GLIBC_2.27 tmpnam_r F
+GLIBC_2.27 toascii F
+GLIBC_2.27 tolower F
+GLIBC_2.27 tolower_l F
+GLIBC_2.27 toupper F
+GLIBC_2.27 toupper_l F
+GLIBC_2.27 towctrans F
+GLIBC_2.27 towctrans_l F
+GLIBC_2.27 towlower F
+GLIBC_2.27 towlower_l F
+GLIBC_2.27 towupper F
+GLIBC_2.27 towupper_l F
+GLIBC_2.27 tr_break F
+GLIBC_2.27 truncate F
+GLIBC_2.27 truncate64 F
+GLIBC_2.27 tsearch F
+GLIBC_2.27 ttyname F
+GLIBC_2.27 ttyname_r F
+GLIBC_2.27 ttyslot F
+GLIBC_2.27 twalk F
+GLIBC_2.27 tzname D 0x10
+GLIBC_2.27 tzset F
+GLIBC_2.27 ualarm F
+GLIBC_2.27 ulckpwdf F
+GLIBC_2.27 ulimit F
+GLIBC_2.27 umask F
+GLIBC_2.27 umount F
+GLIBC_2.27 umount2 F
+GLIBC_2.27 uname F
+GLIBC_2.27 ungetc F
+GLIBC_2.27 ungetwc F
+GLIBC_2.27 unlink F
+GLIBC_2.27 unlinkat F
+GLIBC_2.27 unlockpt F
+GLIBC_2.27 unsetenv F
+GLIBC_2.27 unshare F
+GLIBC_2.27 updwtmp F
+GLIBC_2.27 updwtmpx F
+GLIBC_2.27 uselocale F
+GLIBC_2.27 user2netname F
+GLIBC_2.27 usleep F
+GLIBC_2.27 ustat F
+GLIBC_2.27 utime F
+GLIBC_2.27 utimensat F
+GLIBC_2.27 utimes F
+GLIBC_2.27 utmpname F
+GLIBC_2.27 utmpxname F
+GLIBC_2.27 valloc F
+GLIBC_2.27 vasprintf F
+GLIBC_2.27 vdprintf F
+GLIBC_2.27 verr F
+GLIBC_2.27 verrx F
+GLIBC_2.27 versionsort F
+GLIBC_2.27 versionsort64 F
+GLIBC_2.27 vfork F
+GLIBC_2.27 vfprintf F
+GLIBC_2.27 vfscanf F
+GLIBC_2.27 vfwprintf F
+GLIBC_2.27 vfwscanf F
+GLIBC_2.27 vhangup F
+GLIBC_2.27 vlimit F
+GLIBC_2.27 vmsplice F
+GLIBC_2.27 vprintf F
+GLIBC_2.27 vscanf F
+GLIBC_2.27 vsnprintf F
+GLIBC_2.27 vsprintf F
+GLIBC_2.27 vsscanf F
+GLIBC_2.27 vswprintf F
+GLIBC_2.27 vswscanf F
+GLIBC_2.27 vsyslog F
+GLIBC_2.27 vtimes F
+GLIBC_2.27 vwarn F
+GLIBC_2.27 vwarnx F
+GLIBC_2.27 vwprintf F
+GLIBC_2.27 vwscanf F
+GLIBC_2.27 wait F
+GLIBC_2.27 wait3 F
+GLIBC_2.27 wait4 F
+GLIBC_2.27 waitid F
+GLIBC_2.27 waitpid F
+GLIBC_2.27 warn F
+GLIBC_2.27 warnx F
+GLIBC_2.27 wcpcpy F
+GLIBC_2.27 wcpncpy F
+GLIBC_2.27 wcrtomb F
+GLIBC_2.27 wcscasecmp F
+GLIBC_2.27 wcscasecmp_l F
+GLIBC_2.27 wcscat F
+GLIBC_2.27 wcschr F
+GLIBC_2.27 wcschrnul F
+GLIBC_2.27 wcscmp F
+GLIBC_2.27 wcscoll F
+GLIBC_2.27 wcscoll_l F
+GLIBC_2.27 wcscpy F
+GLIBC_2.27 wcscspn F
+GLIBC_2.27 wcsdup F
+GLIBC_2.27 wcsftime F
+GLIBC_2.27 wcsftime_l F
+GLIBC_2.27 wcslen F
+GLIBC_2.27 wcsncasecmp F
+GLIBC_2.27 wcsncasecmp_l F
+GLIBC_2.27 wcsncat F
+GLIBC_2.27 wcsncmp F
+GLIBC_2.27 wcsncpy F
+GLIBC_2.27 wcsnlen F
+GLIBC_2.27 wcsnrtombs F
+GLIBC_2.27 wcspbrk F
+GLIBC_2.27 wcsrchr F
+GLIBC_2.27 wcsrtombs F
+GLIBC_2.27 wcsspn F
+GLIBC_2.27 wcsstr F
+GLIBC_2.27 wcstod F
+GLIBC_2.27 wcstod_l F
+GLIBC_2.27 wcstof F
+GLIBC_2.27 wcstof128 F
+GLIBC_2.27 wcstof128_l F
+GLIBC_2.27 wcstof32 F
+GLIBC_2.27 wcstof32_l F
+GLIBC_2.27 wcstof32x F
+GLIBC_2.27 wcstof32x_l F
+GLIBC_2.27 wcstof64 F
+GLIBC_2.27 wcstof64_l F
+GLIBC_2.27 wcstof64x F
+GLIBC_2.27 wcstof64x_l F
+GLIBC_2.27 wcstof_l F
+GLIBC_2.27 wcstoimax F
+GLIBC_2.27 wcstok F
+GLIBC_2.27 wcstol F
+GLIBC_2.27 wcstol_l F
+GLIBC_2.27 wcstold F
+GLIBC_2.27 wcstold_l F
+GLIBC_2.27 wcstoll F
+GLIBC_2.27 wcstoll_l F
+GLIBC_2.27 wcstombs F
+GLIBC_2.27 wcstoq F
+GLIBC_2.27 wcstoul F
+GLIBC_2.27 wcstoul_l F
+GLIBC_2.27 wcstoull F
+GLIBC_2.27 wcstoull_l F
+GLIBC_2.27 wcstoumax F
+GLIBC_2.27 wcstouq F
+GLIBC_2.27 wcswcs F
+GLIBC_2.27 wcswidth F
+GLIBC_2.27 wcsxfrm F
+GLIBC_2.27 wcsxfrm_l F
+GLIBC_2.27 wctob F
+GLIBC_2.27 wctomb F
+GLIBC_2.27 wctrans F
+GLIBC_2.27 wctrans_l F
+GLIBC_2.27 wctype F
+GLIBC_2.27 wctype_l F
+GLIBC_2.27 wcwidth F
+GLIBC_2.27 wmemchr F
+GLIBC_2.27 wmemcmp F
+GLIBC_2.27 wmemcpy F
+GLIBC_2.27 wmemmove F
+GLIBC_2.27 wmempcpy F
+GLIBC_2.27 wmemset F
+GLIBC_2.27 wordexp F
+GLIBC_2.27 wordfree F
+GLIBC_2.27 wprintf F
+GLIBC_2.27 write F
+GLIBC_2.27 writev F
+GLIBC_2.27 wscanf F
+GLIBC_2.27 xdecrypt F
+GLIBC_2.27 xdr_accepted_reply F
+GLIBC_2.27 xdr_array F
+GLIBC_2.27 xdr_authdes_cred F
+GLIBC_2.27 xdr_authdes_verf F
+GLIBC_2.27 xdr_authunix_parms F
+GLIBC_2.27 xdr_bool F
+GLIBC_2.27 xdr_bytes F
+GLIBC_2.27 xdr_callhdr F
+GLIBC_2.27 xdr_callmsg F
+GLIBC_2.27 xdr_char F
+GLIBC_2.27 xdr_cryptkeyarg F
+GLIBC_2.27 xdr_cryptkeyarg2 F
+GLIBC_2.27 xdr_cryptkeyres F
+GLIBC_2.27 xdr_des_block F
+GLIBC_2.27 xdr_double F
+GLIBC_2.27 xdr_enum F
+GLIBC_2.27 xdr_float F
+GLIBC_2.27 xdr_free F
+GLIBC_2.27 xdr_getcredres F
+GLIBC_2.27 xdr_hyper F
+GLIBC_2.27 xdr_int F
+GLIBC_2.27 xdr_int16_t F
+GLIBC_2.27 xdr_int32_t F
+GLIBC_2.27 xdr_int64_t F
+GLIBC_2.27 xdr_int8_t F
+GLIBC_2.27 xdr_key_netstarg F
+GLIBC_2.27 xdr_key_netstres F
+GLIBC_2.27 xdr_keybuf F
+GLIBC_2.27 xdr_keystatus F
+GLIBC_2.27 xdr_long F
+GLIBC_2.27 xdr_longlong_t F
+GLIBC_2.27 xdr_netnamestr F
+GLIBC_2.27 xdr_netobj F
+GLIBC_2.27 xdr_opaque F
+GLIBC_2.27 xdr_opaque_auth F
+GLIBC_2.27 xdr_pmap F
+GLIBC_2.27 xdr_pmaplist F
+GLIBC_2.27 xdr_pointer F
+GLIBC_2.27 xdr_quad_t F
+GLIBC_2.27 xdr_reference F
+GLIBC_2.27 xdr_rejected_reply F
+GLIBC_2.27 xdr_replymsg F
+GLIBC_2.27 xdr_rmtcall_args F
+GLIBC_2.27 xdr_rmtcallres F
+GLIBC_2.27 xdr_short F
+GLIBC_2.27 xdr_sizeof F
+GLIBC_2.27 xdr_string F
+GLIBC_2.27 xdr_u_char F
+GLIBC_2.27 xdr_u_hyper F
+GLIBC_2.27 xdr_u_int F
+GLIBC_2.27 xdr_u_long F
+GLIBC_2.27 xdr_u_longlong_t F
+GLIBC_2.27 xdr_u_quad_t F
+GLIBC_2.27 xdr_u_short F
+GLIBC_2.27 xdr_uint16_t F
+GLIBC_2.27 xdr_uint32_t F
+GLIBC_2.27 xdr_uint64_t F
+GLIBC_2.27 xdr_uint8_t F
+GLIBC_2.27 xdr_union F
+GLIBC_2.27 xdr_unixcred F
+GLIBC_2.27 xdr_vector F
+GLIBC_2.27 xdr_void F
+GLIBC_2.27 xdr_wrapstring F
+GLIBC_2.27 xdrmem_create F
+GLIBC_2.27 xdrrec_create F
+GLIBC_2.27 xdrrec_endofrecord F
+GLIBC_2.27 xdrrec_eof F
+GLIBC_2.27 xdrrec_skiprecord F
+GLIBC_2.27 xdrstdio_create F
+GLIBC_2.27 xencrypt F
+GLIBC_2.27 xprt_register F
+GLIBC_2.27 xprt_unregister F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist
new file mode 100644
index 000000000000..8896541674cf
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist
@@ -0,0 +1,80 @@
+GLIBC_2.27 GLIBC_2.27 A
+GLIBC_2.27 __b64_ntop F
+GLIBC_2.27 __b64_pton F
+GLIBC_2.27 __dn_comp F
+GLIBC_2.27 __dn_count_labels F
+GLIBC_2.27 __dn_expand F
+GLIBC_2.27 __dn_skipname F
+GLIBC_2.27 __fp_nquery F
+GLIBC_2.27 __fp_query F
+GLIBC_2.27 __fp_resstat F
+GLIBC_2.27 __hostalias F
+GLIBC_2.27 __loc_aton F
+GLIBC_2.27 __loc_ntoa F
+GLIBC_2.27 __p_cdname F
+GLIBC_2.27 __p_cdnname F
+GLIBC_2.27 __p_class F
+GLIBC_2.27 __p_class_syms D 0xa8
+GLIBC_2.27 __p_fqname F
+GLIBC_2.27 __p_fqnname F
+GLIBC_2.27 __p_option F
+GLIBC_2.27 __p_query F
+GLIBC_2.27 __p_rcode F
+GLIBC_2.27 __p_time F
+GLIBC_2.27 __p_type F
+GLIBC_2.27 __p_type_syms D 0x450
+GLIBC_2.27 __putlong F
+GLIBC_2.27 __putshort F
+GLIBC_2.27 __res_close F
+GLIBC_2.27 __res_dnok F
+GLIBC_2.27 __res_hnok F
+GLIBC_2.27 __res_hostalias F
+GLIBC_2.27 __res_isourserver F
+GLIBC_2.27 __res_mailok F
+GLIBC_2.27 __res_mkquery F
+GLIBC_2.27 __res_nameinquery F
+GLIBC_2.27 __res_nmkquery F
+GLIBC_2.27 __res_nquery F
+GLIBC_2.27 __res_nquerydomain F
+GLIBC_2.27 __res_nsearch F
+GLIBC_2.27 __res_nsend F
+GLIBC_2.27 __res_ownok F
+GLIBC_2.27 __res_queriesmatch F
+GLIBC_2.27 __res_query F
+GLIBC_2.27 __res_querydomain F
+GLIBC_2.27 __res_search F
+GLIBC_2.27 __res_send F
+GLIBC_2.27 __sym_ntop F
+GLIBC_2.27 __sym_ntos F
+GLIBC_2.27 __sym_ston F
+GLIBC_2.27 _getlong F
+GLIBC_2.27 _getshort F
+GLIBC_2.27 inet_net_ntop F
+GLIBC_2.27 inet_net_pton F
+GLIBC_2.27 inet_neta F
+GLIBC_2.27 ns_datetosecs F
+GLIBC_2.27 ns_format_ttl F
+GLIBC_2.27 ns_get16 F
+GLIBC_2.27 ns_get32 F
+GLIBC_2.27 ns_initparse F
+GLIBC_2.27 ns_makecanon F
+GLIBC_2.27 ns_msg_getflag F
+GLIBC_2.27 ns_name_compress F
+GLIBC_2.27 ns_name_ntol F
+GLIBC_2.27 ns_name_ntop F
+GLIBC_2.27 ns_name_pack F
+GLIBC_2.27 ns_name_pton F
+GLIBC_2.27 ns_name_rollback F
+GLIBC_2.27 ns_name_skip F
+GLIBC_2.27 ns_name_uncompress F
+GLIBC_2.27 ns_name_unpack F
+GLIBC_2.27 ns_parse_ttl F
+GLIBC_2.27 ns_parserr F
+GLIBC_2.27 ns_put16 F
+GLIBC_2.27 ns_put32 F
+GLIBC_2.27 ns_samedomain F
+GLIBC_2.27 ns_samename F
+GLIBC_2.27 ns_skiprr F
+GLIBC_2.27 ns_sprintrr F
+GLIBC_2.27 ns_sprintrrf F
+GLIBC_2.27 ns_subdomain F
-- 
2.13.6

[PATCH 16/17] RISC-V: Build Infastructure

[Palmer Dabbelt]

This patch lays out the top-level orginazition of the RISC-V port.  It
contains all the Implies files as well as various other fragments of
build infastructure for the RISC-V port.  This contains the only change
to a shared file: config.h.in.

RISC-V is a family of base ISAs with optional extensions.  The base ISAs
are RV32I and RV64I, which are 32-bit and 64-bit integer-only ISAs.
Support for these live in sysdeps/riscv/rv{32,64}.  In addition to these
ISAs, our glibc port supports most of the currently-defined extensions:
the A extension for atomics, the M extension for multiplication, the C
extension for compressed instructions, and the F/D extensions for
single/double precision IEEE floating-point.  Most of these extensions
are handled by GCC, but glibc defines various floating-point wrappers
(in sysdeps/riscv/rv{32,64}/rv{f,d}) and emulation routines (in
sysdeps/riscv/soft-fp).

We support running glibc-based programs on Linux, the suppor for which
lives in sysdeps/unix/sysv/linux/riscv.
---
 sysdeps/riscv/Implies                        |   5 +
 sysdeps/riscv/Makefile                       |   7 +
 sysdeps/riscv/configure                      |   4 +
 sysdeps/riscv/configure.ac                   |   4 +
 sysdeps/riscv/nptl/Makefile                  |  26 +++
 sysdeps/riscv/preconfigure                   |  73 ++++++++
 sysdeps/riscv/rv32/Implies-after             |   1 +
 sysdeps/riscv/rv32/rvd/Implies               |   2 +
 sysdeps/riscv/rv32/rvf/Implies               |   1 +
 sysdeps/riscv/rv64/Implies-after             |   1 +
 sysdeps/riscv/rv64/rvd/Implies               |   3 +
 sysdeps/riscv/rv64/rvf/Implies               |   1 +
 sysdeps/unix/sysv/linux/riscv/Implies        |   1 +
 sysdeps/unix/sysv/linux/riscv/Makefile       |  27 +++
 sysdeps/unix/sysv/linux/riscv/Versions       |  11 ++
 sysdeps/unix/sysv/linux/riscv/configure      | 256 +++++++++++++++++++++++++++
 sysdeps/unix/sysv/linux/riscv/configure.ac   |  44 +++++
 sysdeps/unix/sysv/linux/riscv/rv32/Implies   |   3 +
 sysdeps/unix/sysv/linux/riscv/rv64/Implies   |   3 +
 sysdeps/unix/sysv/linux/riscv/rv64/Makefile  |   4 +
 sysdeps/unix/sysv/linux/riscv/shlib-versions |  13 ++
 21 files changed, 490 insertions(+)
 create mode 100644 sysdeps/riscv/Implies
 create mode 100644 sysdeps/riscv/Makefile
 create mode 100644 sysdeps/riscv/configure
 create mode 100644 sysdeps/riscv/configure.ac
 create mode 100644 sysdeps/riscv/nptl/Makefile
 create mode 100644 sysdeps/riscv/preconfigure
 create mode 100644 sysdeps/riscv/rv32/Implies-after
 create mode 100644 sysdeps/riscv/rv32/rvd/Implies
 create mode 100644 sysdeps/riscv/rv32/rvf/Implies
 create mode 100644 sysdeps/riscv/rv64/Implies-after
 create mode 100644 sysdeps/riscv/rv64/rvd/Implies
 create mode 100644 sysdeps/riscv/rv64/rvf/Implies
 create mode 100644 sysdeps/unix/sysv/linux/riscv/Implies
 create mode 100644 sysdeps/unix/sysv/linux/riscv/Makefile
 create mode 100644 sysdeps/unix/sysv/linux/riscv/Versions
 create mode 100755 sysdeps/unix/sysv/linux/riscv/configure
 create mode 100644 sysdeps/unix/sysv/linux/riscv/configure.ac
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv32/Implies
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/Implies
 create mode 100644 sysdeps/unix/sysv/linux/riscv/rv64/Makefile
 create mode 100644 sysdeps/unix/sysv/linux/riscv/shlib-versions

diff --git a/sysdeps/riscv/Implies b/sysdeps/riscv/Implies
new file mode 100644
index 000000000000..c88325b8be16
--- /dev/null
+++ b/sysdeps/riscv/Implies
@@ -0,0 +1,5 @@
+init_array
+
+ieee754/ldbl-128
+ieee754/dbl-64
+ieee754/flt-32
diff --git a/sysdeps/riscv/Makefile b/sysdeps/riscv/Makefile
new file mode 100644
index 000000000000..20a996810611
--- /dev/null
+++ b/sysdeps/riscv/Makefile
@@ -0,0 +1,7 @@
+ifeq ($(subdir),misc)
+sysdep_headers += sys/asm.h
+endif
+
+# RISC-V's assembler also needs to know about PIC as it changes the definition
+# of some assembler macros.
+ASFLAGS-.os += $(pic-ccflag)
diff --git a/sysdeps/riscv/configure b/sysdeps/riscv/configure
new file mode 100644
index 000000000000..53f5f1b5f113
--- /dev/null
+++ b/sysdeps/riscv/configure
@@ -0,0 +1,4 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/riscv/elf.
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
diff --git a/sysdeps/riscv/configure.ac b/sysdeps/riscv/configure.ac
new file mode 100644
index 000000000000..34f62d4b4b82
--- /dev/null
+++ b/sysdeps/riscv/configure.ac
@@ -0,0 +1,4 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/riscv/elf.
+
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
diff --git a/sysdeps/riscv/nptl/Makefile b/sysdeps/riscv/nptl/Makefile
new file mode 100644
index 000000000000..c3cc7f36da7e
--- /dev/null
+++ b/sysdeps/riscv/nptl/Makefile
@@ -0,0 +1,26 @@
+# Makefile for sysdeps/riscv/nptl.
+# Copyright (C) 2005-2018 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif
+
+ifeq ($(subdir),nptl)
+libpthread-sysdep_routines += nptl-sysdep
+libpthread-shared-only-routines += nptl-sysdep
+endif
diff --git a/sysdeps/riscv/preconfigure b/sysdeps/riscv/preconfigure
new file mode 100644
index 000000000000..54ffbb593315
--- /dev/null
+++ b/sysdeps/riscv/preconfigure
@@ -0,0 +1,73 @@
+case "$machine" in
+riscv*)
+    xlen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_xlen \(.*\)/\1/p'`
+    flen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_flen \(.*\)/\1/p'`
+    float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_float_abi_\([^ ]*\) .*/\1/p'`
+    atomic=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep '#define __riscv_atomic' | cut -d' ' -f2`
+    
+    case "$xlen" in
+    32)
+	echo "glibc does not yet support 32-bit systems" >&2
+	exit 1
+    	;;
+    64)
+	;;
+    *)
+    	echo "Unable to determine XLEN" >&2
+    	exit 1
+    	;;
+    esac
+    
+    case "$flen" in
+    64)
+    	float_machine=rvd
+	with_fp_cond=1
+    	;;
+    32)
+        echo "glibc does not yet support systems with the F but not D extensions" >&2
+	exit 1
+	;;
+    "")
+	echo "glibc does not yet support systems without the F extension" >&2
+	exit 1
+	with_fp_cond=0
+    	;;
+    *)
+    	echo "Unable to determine FLEN" >&2
+    	exit 1
+    	;;
+    esac
+    
+    case "$float_abi" in
+    soft)
+    	abi_flen=0
+    	;;
+    single)
+	echo "glibc does not yet support the single floating-point ABI" >&2
+	exit 1
+	;;
+    double)
+    	abi_flen=64
+    	;;
+    *)
+    	echo "Unable to determine floating-point ABI" >&2
+    	exit 1
+    	;;
+    esac
+
+    case "$atomic" in
+    __riscv_atomic)
+        ;;
+    *)
+        echo "glibc requires the A extension" >&2
+	exit 1
+	;;
+    esac
+    
+    base_machine=riscv
+    machine=riscv/rv$xlen/$float_machine
+    
+    $as_echo "#define RISCV_ABI_XLEN $xlen" >>confdefs.h
+    $as_echo "#define RISCV_ABI_FLEN $abi_flen" >>confdefs.h
+    ;;
+esac
diff --git a/sysdeps/riscv/rv32/Implies-after b/sysdeps/riscv/rv32/Implies-after
new file mode 100644
index 000000000000..39a34c5f5743
--- /dev/null
+++ b/sysdeps/riscv/rv32/Implies-after
@@ -0,0 +1 @@
+wordsize-32
diff --git a/sysdeps/riscv/rv32/rvd/Implies b/sysdeps/riscv/rv32/rvd/Implies
new file mode 100644
index 000000000000..9438838e98b9
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/Implies
@@ -0,0 +1,2 @@
+riscv/rvd
+riscv/rvf
diff --git a/sysdeps/riscv/rv32/rvf/Implies b/sysdeps/riscv/rv32/rvf/Implies
new file mode 100644
index 000000000000..66c401443b8c
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/Implies
@@ -0,0 +1 @@
+riscv/rvf
diff --git a/sysdeps/riscv/rv64/Implies-after b/sysdeps/riscv/rv64/Implies-after
new file mode 100644
index 000000000000..a8cae95f9d46
--- /dev/null
+++ b/sysdeps/riscv/rv64/Implies-after
@@ -0,0 +1 @@
+wordsize-64
diff --git a/sysdeps/riscv/rv64/rvd/Implies b/sysdeps/riscv/rv64/rvd/Implies
new file mode 100644
index 000000000000..42fb132d12ae
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvd/Implies
@@ -0,0 +1,3 @@
+riscv/rv64/rvf
+riscv/rvd
+riscv/rvf
diff --git a/sysdeps/riscv/rv64/rvf/Implies b/sysdeps/riscv/rv64/rvf/Implies
new file mode 100644
index 000000000000..66c401443b8c
--- /dev/null
+++ b/sysdeps/riscv/rv64/rvf/Implies
@@ -0,0 +1 @@
+riscv/rvf
diff --git a/sysdeps/unix/sysv/linux/riscv/Implies b/sysdeps/unix/sysv/linux/riscv/Implies
new file mode 100644
index 000000000000..6faec7011569
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/Implies
@@ -0,0 +1 @@
+riscv/nptl
diff --git a/sysdeps/unix/sysv/linux/riscv/Makefile b/sysdeps/unix/sysv/linux/riscv/Makefile
new file mode 100644
index 000000000000..bf9c24ad77da
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/Makefile
@@ -0,0 +1,27 @@
+ifeq ($(subdir),elf)
+sysdep_routines	+= dl-vdso
+ifeq ($(build-shared),yes)
+# This is needed for DSO loading from static binaries.
+sysdep-dl-routines += dl-static
+endif
+endif
+
+ifeq ($(subdir),misc)
+sysdep_headers += sys/cachectl.h
+sysdep_routines += flush-icache
+endif
+
+ifeq ($(subdir),stdlib)
+gen-as-const-headers += ucontext_i.sym
+endif
+
+abi-variants := ilp32 ilp32d lp64 lp64d
+
+ifeq (,$(filter $(default-abi),$(abi-variants)))
+$(error Unknown ABI $(default-abi), must be one of $(abi-variants))
+endif
+
+abi-ilp32-condition   := !defined __LP64__ && defined __riscv_float_abi_soft
+abi-ilp32d-condition  := !defined __LP64__ && defined __riscv_float_abi_double
+abi-lp64-condition    := defined __LP64__ && defined __riscv_float_abi_soft
+abi-lp64d-condition   := defined __LP64__ && defined __riscv_float_abi_double
diff --git a/sysdeps/unix/sysv/linux/riscv/Versions b/sysdeps/unix/sysv/linux/riscv/Versions
new file mode 100644
index 000000000000..5625d2a0b8fa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/Versions
@@ -0,0 +1,11 @@
+ld {
+  GLIBC_PRIVATE {
+    # used for loading by static libraries
+    _dl_var_init;
+  }
+}
+libc {
+  GLIBC_2.27 {
+    __riscv_flush_icache;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/riscv/configure b/sysdeps/unix/sysv/linux/riscv/configure
new file mode 100755
index 000000000000..54da0fa4cef2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/configure
@@ -0,0 +1,256 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/unix/sysv/linux/riscv.
+
+arch_minimum_kernel=4.15.0
+
+libc_cv_riscv_int_abi=no
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__SIZEOF_INT__ __SIZEOF_LONG__ __SIZEOF_POINTER__
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "4 8 8" >/dev/null 2>&1; then :
+  libc_cv_riscv_int_abi=lp64
+fi
+rm -f conftest*
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__SIZEOF_INT__ __SIZEOF_LONG__ __SIZEOF_POINTER__
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "4 4 4" >/dev/null 2>&1; then :
+  libc_cv_riscv_int_abi=ilp32
+fi
+rm -f conftest*
+
+if test $libc_cv_riscv_int_abi = no; then
+  as_fn_error $? "Unable to determine integer ABI" "$LINENO" 5
+fi
+
+libc_cv_riscv_float_abi=no
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __riscv_float_abi_double
+		   yes
+		   #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1; then :
+  libc_cv_riscv_float_abi=d
+fi
+rm -f conftest*
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __riscv_float_abi_soft
+		   yes
+		   #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1; then :
+  libc_cv_riscv_float_abi=
+fi
+rm -f conftest*
+
+if test $libc_cv_riscv_float_abi = no; then
+  as_fn_error $? "Unable to determine floating-point ABI" "$LINENO" 5
+fi
+
+config_vars="$config_vars
+default-abi = $libc_cv_riscv_int_abi$libc_cv_riscv_float_abi"
+
+case $libc_cv_riscv_int_abi$libc_cv_riscv_float_abi-$machine in
+lp64-riscv/rv64/*)
+  test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+  libc_cv_slibdir=/lib64/lp64
+  libc_cv_rtlddir=/lib
+  if test "$libdir" = '${exec_prefix}/lib'; then
+    libdir='${exec_prefix}/lib64/lp64';
+    # Locale data can be shared between 32-bit and 64-bit libraries.
+    libc_cv_complocaledir='${exec_prefix}/lib/locale'
+  fi
+  ;;
+esac
+  ;;
+lp64d-riscv/rv64/*)
+  test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+  libc_cv_slibdir=/lib64/lp64d
+  libc_cv_rtlddir=/lib
+  if test "$libdir" = '${exec_prefix}/lib'; then
+    libdir='${exec_prefix}/lib64/lp64d';
+    # Locale data can be shared between 32-bit and 64-bit libraries.
+    libc_cv_complocaledir='${exec_prefix}/lib/locale'
+  fi
+  ;;
+esac
+  ;;
+ilp32-riscv/rv32/*)
+  test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+  libc_cv_slibdir=/lib32/ilp32
+  libc_cv_rtlddir=/lib
+  if test "$libdir" = '${exec_prefix}/lib'; then
+    libdir='${exec_prefix}/lib32/ilp32';
+    # Locale data can be shared between 32-bit and 64-bit libraries.
+    libc_cv_complocaledir='${exec_prefix}/lib/locale'
+  fi
+  ;;
+esac
+  ;;
+ilp32d-riscv/rv32/*)
+  test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+  libc_cv_slibdir=/lib32/ilp32d
+  libc_cv_rtlddir=/lib
+  if test "$libdir" = '${exec_prefix}/lib'; then
+    libdir='${exec_prefix}/lib32/ilp32d';
+    # Locale data can be shared between 32-bit and 64-bit libraries.
+    libc_cv_complocaledir='${exec_prefix}/lib/locale'
+  fi
+  ;;
+esac
+  ;;
+esac
diff --git a/sysdeps/unix/sysv/linux/riscv/configure.ac b/sysdeps/unix/sysv/linux/riscv/configure.ac
new file mode 100644
index 000000000000..0c9bc28249e9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/configure.ac
@@ -0,0 +1,44 @@
+sinclude(./aclocal.m4)dnl Autoconf lossage
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/unix/sysv/linux/riscv.
+
+arch_minimum_kernel=4.15.0
+
+libc_cv_riscv_int_abi=no
+AC_EGREP_CPP(4 8 8, [__SIZEOF_INT__ __SIZEOF_LONG__ __SIZEOF_POINTER__
+  ], libc_cv_riscv_int_abi=lp64)
+AC_EGREP_CPP(4 4 4, [__SIZEOF_INT__ __SIZEOF_LONG__ __SIZEOF_POINTER__
+  ], libc_cv_riscv_int_abi=ilp32)
+if test $libc_cv_riscv_int_abi = no; then
+  AC_MSG_ERROR([Unable to determine integer ABI])
+fi
+
+libc_cv_riscv_float_abi=no
+AC_EGREP_CPP(yes, [#ifdef __riscv_float_abi_double
+		   yes
+		   #endif
+  ],libc_cv_riscv_float_abi=d)
+AC_EGREP_CPP(yes, [#ifdef __riscv_float_abi_soft
+		   yes
+		   #endif
+  ],libc_cv_riscv_float_abi=)
+if test $libc_cv_riscv_float_abi = no; then
+  AC_MSG_ERROR([Unable to determine floating-point ABI])
+fi
+
+LIBC_CONFIG_VAR([default-abi], [$libc_cv_riscv_int_abi$libc_cv_riscv_float_abi])
+
+case $libc_cv_riscv_int_abi$libc_cv_riscv_float_abi-$machine in
+lp64-riscv/rv64/*)
+  LIBC_SLIBDIR_RTLDDIR([lib64/lp64], [lib])
+  ;;
+lp64d-riscv/rv64/*)
+  LIBC_SLIBDIR_RTLDDIR([lib64/lp64d], [lib])
+  ;;
+ilp32-riscv/rv32/*)
+  LIBC_SLIBDIR_RTLDDIR([lib32/ilp32], [lib])
+  ;;
+ilp32d-riscv/rv32/*)
+  LIBC_SLIBDIR_RTLDDIR([lib32/ilp32d], [lib])
+  ;;
+esac
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/Implies b/sysdeps/unix/sysv/linux/riscv/rv32/Implies
new file mode 100644
index 000000000000..8b7deb33cd51
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/Implies
@@ -0,0 +1,3 @@
+unix/sysv/linux/riscv
+unix/sysv/linux/generic/wordsize-32
+unix/sysv/linux/generic
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/Implies b/sysdeps/unix/sysv/linux/riscv/rv64/Implies
new file mode 100644
index 000000000000..f042343bf7b4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/Implies
@@ -0,0 +1,3 @@
+unix/sysv/linux/riscv
+unix/sysv/linux/generic
+unix/sysv/linux/wordsize-64
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/Makefile b/sysdeps/unix/sysv/linux/riscv/rv64/Makefile
new file mode 100644
index 000000000000..cb60d740476d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/Makefile
@@ -0,0 +1,4 @@
+ifeq ($(subdir),socket)
+CFLAGS-recv.c += -fexceptions
+CFLAGS-send.c += -fexceptions
+endif
diff --git a/sysdeps/unix/sysv/linux/riscv/shlib-versions b/sysdeps/unix/sysv/linux/riscv/shlib-versions
new file mode 100644
index 000000000000..1d2561e7a8ec
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/shlib-versions
@@ -0,0 +1,13 @@
+DEFAULT		GLIBC_2.27
+
+%if RISCV_ABI_XLEN == 64 && RISCV_ABI_FLEN == 64
+ld=ld-linux-riscv64-lp64d.so.1
+%elif RISCV_ABI_XLEN == 64 && RISCV_ABI_FLEN == 0
+ld=ld-linux-riscv64-lp64.so.1
+%elif RISCV_ABI_XLEN == 32 && RISCV_ABI_FLEN == 64
+ld=ld-linux-riscv32-ilp32d.so.1
+%elif RISCV_ABI_XLEN == 32 && RISCV_ABI_FLEN == 0
+ld=ld-linux-riscv32-ilp32.so.1
+%else
+%error cannot determine ABI
+%endif
-- 
2.13.6

[PATCH 17/17] Add RISC-V to build-many-glibcs.py

[Palmer Dabbelt]

For full disclosure, I've only run build-many-glibcs.py with the
additional diff below.

    diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
    index 1c7b85050b57..22cc7b427041 100755
    --- a/scripts/build-many-glibcs.py
    +++ b/scripts/build-many-glibcs.py
    @@ -706,7 +706,7 @@ class Context(object):
                                 'gcc': 'vcs-7',
                                 'glibc': 'vcs-mainline',
                                 'gmp': '6.1.2',
    -                            'linux': '4.14',
    +                            'linux': '4.15-rc8',
                                 'mpc': '1.0.3',
                                 'mpfr': '3.1.6'}
             use_versions = {}
    @@ -841,7 +841,7 @@ class Context(object):
             url_map = {'binutils':
    'https://ftp.gnu.org/gnu/binutils/binutils-%(version)s.tar.bz2',
                        'gcc':
    'https://ftp.gnu.org/gnu/gcc/gcc-%(version)s/gcc-%(version)s.tar.bz2',
                        'gmp':
    'https://ftp.gnu.org/gnu/gmp/gmp-%(version)s.tar.xz',
    -                   'linux':
                        'https://www.kernel.org/pub/linux/kernel/v4.x/linux-%(version)s.tar.xz',
    +                   'linux':
    'https://git.kernel.org/torvalds/t/linux-%(version)s.tar.gz',
                        'mpc':
    'https://ftp.gnu.org/gnu/mpc/mpc-%(version)s.tar.gz',
                        'mpfr':
    'https://ftp.gnu.org/gnu/mpfr/mpfr-%(version)s.tar.xz'}
             if component not in url_map:

2018-01-13  Palmer Dabbelt  <palmer@sifive.com>

        * scripts/build-many-glibcs.py (Context): Add RISC-V targets.
        (Config): Likewise.
---
 scripts/build-many-glibcs.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
index 28c04e66fd52..e3113599beb1 100755
--- a/scripts/build-many-glibcs.py
+++ b/scripts/build-many-glibcs.py
@@ -329,6 +329,12 @@ class Context(object):
                         os_name='linux-gnuspe',
                         variant='e500v1',
                         gcc_cfg=['--disable-multilib', '--enable-secureplt'])
+        self.add_config(arch='riscv64',
+                        os_name='linux-gnu',
+                        glibcs=[{'variant': 'rv64imafdc-lp64d',
+                                 'ccopts': '-march=rv64imafdc -mabi=lp64d'},
+                                {'variant': 'rv64imac-lp64',
+                                 'ccopts': '-march=rv64imac -mabi=lp64'}])
         self.add_config(arch='s390x',
                         os_name='linux-gnu',
                         glibcs=[{},
@@ -1227,6 +1233,8 @@ class Config(object):
                     'nios2': 'nios2',
                     'powerpc': 'powerpc',
                     's390': 's390',
+                    'riscv32': 'riscv',
+                    'riscv64': 'riscv',
                     'sh': 'sh',
                     'sparc': 'sparc',
                     'tile': 'tile',
-- 
2.13.6

Re: RISC-V glibc port, v5

[Andreas Schwab]

On Jan 24 2018, Palmer Dabbelt <palmer@dabbelt.com> wrote:

> * A system that's fast enough to avoid a handful of timeouts.

Note that you can set TIMEOUTFACTOR to scale the testsuite timeout.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

Re: RISC-V glibc port, v5

[Darius Rad]

On 01/24/2018 11:36 PM, Palmer Dabbelt wrote>
> Which leaves a total of 15 archicture-specific failures.  The test suite
> results for rv64gc/lp64 are slightly better than this, Darius can provide links
> to full results on his website like usual.
> 

Output from all non-PASS tests for LP64D [1] and LP64 [2].

[1] http://bluespec.com/tmp/glibc-check.tar.xz
[2] http://bluespec.com/tmp/glibc-check-lp64.tar.xz


// darius

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 01:35:15 PST (-0800), schwab@suse.de wrote:
> On Jan 24 2018, Palmer Dabbelt <palmer@dabbelt.com> wrote:
>
>> * A system that's fast enough to avoid a handful of timeouts.
>
> Note that you can set TIMEOUTFACTOR to scale the testsuite timeout.

Thanks.  We'll be setting up a proper automated test system for our toolchains 
soon, it's just been a bit hectic here so there hasn't quite been time to get 
everything put together.

Re: RISC-V glibc port, v5

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> This v5 patch set contains what we hope is a viable RISC-V port for inclusion
> into glibc-2.27.  For sanity's sake, we'd like to only mark the rv64gc/lp64d
> and rv64gc/lp64 ports as stable right now and leave the remaining ports a work
> in progress -- the rv32 ports are blocked on Linux being a bit flaky, and the

Are those Linux problems being worked on?  When are fixes expected?  
Would you expect to be able to add test results for glibc 2.27 for the 
three RV32 configurations to the wiki page shortly after the release, even 
if the kernel isn't ready yet?

I don't approve of the patch series having an inconsistent message about 
the status of RV32 support.  Either RV32 is supported by the glibc port, 
possibly with a caveat in README like those for i[4567]86-*-gnu and 
hppa-*-linux-gnu (the latter of which caveats should be removed...), 
referring to kernel issues, and is built by build-many-glibcs.py, etc., or 
it's not, in which case you should submit a cleanly RV64-only port, no 
RV32 sysdeps directories or conditionals, with a view to possibly adding 
RV32 later (with a GLIBC_2.28 or later minimum symbol version for RV32 in 
that case).

> rv64imac/lp64 port just flat out takes too long to run in simulation (or on an

In my experience, testing MIPS with QEMU takes about three hours per ABI.  
That's doing cross testing, with the compilers running on a Haswell-based 
Xeon and the MIPS programs running via SSH to QEMU system emulation 
running on the same Haswell-based Xeon.  SSH connection sharing is used to 
avoid SSH connection setup overhead for each test, but the build and 
testing is not using parallel make (so such tests can be run in parallel 
for many different configurations, depending on the number of cores you 
have, without slowing down).

That time does not vary significantly between hard and soft float 
libraries.  I would not expect RISC-V testing with QEMU to be 
significantly slower than MIPS, or to have more dependence on whether hard 
or soft float is being tested.  (QEMU of course is emulating target 
floating point in any case - the difference is just between emulation in 
native x86_64 code, versus emulation in target architecture integer code 
which is then translated to x86_64 code by QEMU.)

> FPGA, which is even slower).  The rv64gc/lp64d port is the primary target of

(I've tested for MIPS on FPGAs in the past - as I recall, it was still 
less than a day per ABI, though we've added a lot more tests since then.)

> * Some additional WIP GCC patches.

Are those to go in GCC 8?  GCC 8 and GCC 7?

> * The latest Linux kernel headers.

Meaning 4.15 release, due out hopefully this weekend, will be good enough?

> Which leaves a total of 15 archicture-specific failures.  The test suite
> results for rv64gc/lp64 are slightly better than this, Darius can provide links
> to full results on his website like usual.

I take it these failures are still being worked on (possibly for fixes 
after 2.27), since it's likely there are some remaining glibc or kernel 
bugs to resolve as shown up by these failures?

>    FAIL: sysvipc/test-sysvmsg
>    FAIL: sysvipc/test-sysvsem
>    FAIL: sysvipc/test-sysvshm

E.g. these look very much like there's a problem with SysV IPC in glibc or 
the kernel.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 01/17] Skeleton documentation for the RISC-V port

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> @@ -98,6 +98,13 @@ Major new features:
>    to fail to load locales and fall back to the builtin C/POSIX locales.
>    See notes below for other changes affecting compatibility.
>  
> +* Support for the RISC-V ISA running on Linux has been added.  This port
> +  requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
> +  for the following ISA and ABI pairs:
> +
> +    - rv64imafdc lp64
> +    - rv64imafdc lp64d

> diff --git a/README b/README
> index d0e99ea7d5a0..425a82956fc8 100644
> --- a/README
> +++ b/README
> @@ -39,6 +39,8 @@ The GNU C Library supports these configurations for using Linux kernels:
>  	powerpc64*-*-linux-gnu	Big-endian and little-endian.
>  	s390-*-linux-gnu
>  	s390x-*-linux-gnu
> +	riscv32-*-linux-gnu
> +	riscv64-*-linux-gnu

So, this is an example of the inconsistency about whether RV32 is 
supported or not.  I'd expect one of:

* List all six combinations in NEWS, with appropriate caveats about the 
state of kernel and glibc support for RV32 and soft-float, and a caveat 
about riscv32-*-linux-gnu in README (the latter caveat to be removed later 
once it's known to be working properly).

* Remove the riscv32-*-linux-gnu README entry, and all the other RV32 
support in the port.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> The RISC-V port defines ELF flags that enforce compatibility between
> various objects.  This adds the shared support necessary for these
> flags.
> 
> 2018-01-13  Palmer Dabbelt  <palmer@sifive.com>
> 
>         * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
>         FLAG_RISCV_FLOAT_ABI_DOUBLE.
>         * elf/elf.h (EF_RISCV_RVC): New define.
>         (EF_RISCV_FLOAT_ABI): Likewise.
>         (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
>         (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
>         (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>         (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
>         * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
>         define.
>         (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.

This patch is OK, please commit.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[DJ Delorie]

Joseph Myers <joseph@codesourcery.com> writes:
> I don't approve of the patch series having an inconsistent message about 
> the status of RV32 support.

Although, +1 for someone finally getting the "upstream early" message ;-)

> In my experience, testing MIPS with QEMU takes about three hours per ABI.  

For reference, on the fpga (quad core 64-bit) building glibc natively
took a day, and my tests ran for four days before finally hanging
somewhere in a printf bz test.  I'm working on speeding it up :-)
(still building sshd ;)

Re: [PATCH 06/17] RISC-V: Startup and Dynamic Loading Code

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> diff --git a/sysdeps/riscv/crti.S b/sysdeps/riscv/crti.S

I'm wondering if this file should be sysdeps/init_array/crti.S; it seems 
entirely generic and analogous to sysdeps/init_array/pt-crti.S (and 
nothing currently uses sysdeps/init_array - it was previously used by the 
NaCl port - so putting the file in sysdeps/init_array couldn't break 
anything for other ports).

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[DJ Delorie]

Palmer Dabbelt <palmer@dabbelt.com> writes:
>    FAIL: malloc/tst-malloc-tcache-leak
>        timeout (passes on a re-run)

This one, at least, creates 10,000 threads to test for a systemic leak.
It's no surprise it times out.  Setting TIMEOUTFACTOR for RISC-V is a
perfectly justified solution for these.

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, DJ Delorie wrote:

> > In my experience, testing MIPS with QEMU takes about three hours per ABI.  
> 
> For reference, on the fpga (quad core 64-bit) building glibc natively
> took a day, and my tests ran for four days before finally hanging

I don't suggest testing natively on QEMU or FPGA; just executing tests 
there but compiling on a suitably faster system.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Andreas Schwab]

On Jan 25 2018, DJ Delorie <dj@redhat.com> wrote:

> For reference, on the fpga (quad core 64-bit) building glibc natively
> took a day, and my tests ran for four days before finally hanging
> somewhere in a printf bz test.  I'm working on speeding it up :-)
> (still building sshd ;)

For comparison, with the qemu linux-user emulation building glibc takes
takes around 3 hours (using a full-native toolchain).

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

Re: [PATCH 08/17] RISC-V: Generic <math.h> and soft-fp Routines

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> FIXME: add ieee745/soft-fp via a riscv/soft-fp directory.

You need to remove that FIXME (and, in general, update patch descriptions 
when sending new versions of a patch series - though in this case it 
doesn't matter so much, as it makes sense for the final commit of a new 
port to go in a single commit, not lots of separate commits of different 
pieces that don't work without each other, so an overall commit message is 
what's needed at that point anyway).

> +/* Despite not supporting trapping exceptions, we support setting
> +   floating-point exception flags on hard-float targets.  These are not
> +   supported on soft-float targets.  */
> +#if __riscv_flen == 0
> +#define EXCEPTION_TESTS_float 0
> +#define EXCEPTION_TESTS_double        0
> +#endif

Missing preprocessor indentation, "# define".

> +/* We don't support the Q extension yet, so long double is always soft float
> + * and therefor doesn't support exceptions.  */
> +#define EXCEPTION_TESTS_long_double   0

That's not accurate.  The EXCEPTION_TESTS_long_double definition should be 
inside the same conditional as the others - the RISC-V sfp-machine.h, in 
both glibc and libgcc, already handles making software floating-point 
types use the hardware exceptions and rounding modes when those exist.

(I expect that if you completed a soft-float test run you'd find that 
ROUNDING_TESTS_* definitions, similar to those on other ports, are also 
needed inside that conditional, to disable tests of rounding modes other 
than FE_TONEAREST for soft-float.)

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 12/17] RISC-V: Linux Syscall Interface

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
> new file mode 100644
> index 000000000000..8a17c13cbeba
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
> @@ -0,0 +1,70 @@
> +/* Copyright (C) 1994-2018 Free Software Foundation, Inc.

Missing descriptive comment before the copyright notice (if you keep rv32 
sysdeps directories).

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 13/17] RISC-V: Linux ABI

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> diff --git a/sysdeps/unix/sysv/linux/riscv/flush-icache.c b/sysdeps/unix/sysv/linux/riscv/flush-icache.c

> +static int __riscv_flush_icache_syscall (void *start, void *end,
> +					 unsigned long int flags)
> +{
> +	return INLINE_SYSCALL (riscv_flush_icache, 3, start, end, flags);

The formatting is off here.  "static int" on its own line, function name 
at the start of the next line.  return statement should be indented by two 
spaces, not a TAB.

> +  /* RISC-V Linux ABIs mandate the presence of the C extension.  */
> +  if (flags & EF_RISCV_RVC)
> +    return 1;

My understanding is that you should just remove this check; shared 
libraries are OK both with and without EF_RISCV_RVC, so there should be no 
need to reject those with it set (or if you need to reject them, you 
definitely need a different comment explaining why).

> +#ifdef __USE_MISC
> +# define NGREG	32
> +
> +#define REG_PC 0
> +#define REG_RA 1
> +#define REG_SP 2
> +#define REG_TP 4
> +#define REG_S0 8
> +#define REG_S1 9
> +#define REG_A0 10
> +#define REG_S2 18
> +#define REG_NARGS 8

Missing preprocessor indentation, "# define", on all these REG_* macros.

> diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h b/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h

You shouldn't need this file.  All the architecture-specific 
sysdep-cancel.h files were removed by Adhemerval a while back.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 15/17] RISC-V: Add ABI Lists

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> The libm-test-ulps* are just placeholders, so they're almost certainly
> nonsense.

Again, make sure patch descriptions actually relate to that version of the 
patch.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 17/17] Add RISC-V to build-many-glibcs.py

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
> index 28c04e66fd52..e3113599beb1 100755
> --- a/scripts/build-many-glibcs.py
> +++ b/scripts/build-many-glibcs.py
> @@ -329,6 +329,12 @@ class Context(object):
>                          os_name='linux-gnuspe',
>                          variant='e500v1',
>                          gcc_cfg=['--disable-multilib', '--enable-secureplt'])
> +        self.add_config(arch='riscv64',
> +                        os_name='linux-gnu',
> +                        glibcs=[{'variant': 'rv64imafdc-lp64d',
> +                                 'ccopts': '-march=rv64imafdc -mabi=lp64d'},
> +                                {'variant': 'rv64imac-lp64',
> +                                 'ccopts': '-march=rv64imac -mabi=lp64'}])

Are you sure this actually works with this version of the port, and 
current upstream GCC?

In patch 16, in this version of the port, the preconfigure script 
disallows soft-float, "glibc does not yet support systems without the F 
extension".  Apart from a few other places in the port with soft-float 
support (again, the port should be consistent about what is or is not 
supported - either have the soft-float support, or not include the code at 
all because it can't be tested - of course most places are actually 
testing for the ABI, but it seems there are a few testing __riscv_flen), 
as I understand it -march=rv64imac means soft-float so wouldn't build 
given patch 16.  *And* GCC's t-linux-multilib looks like it expects both 
32-bit and 64-bit, hard-float and soft-float ABI multilibs:

MULTILIB_REQUIRED = march=rv32imac/mabi=ilp32 \
march=rv32imafdc/mabi=ilp32d \
march=rv64imac/mabi=lp64 \
march=rv64imafdc/mabi=lp64d

So I'd expect the second GCC build to run into problems when only RV64 
multilibs of glibc but not RV32 ones have been built, because it would try 
to build the RV32 shared libraries of libgcc, libstdc++ etc., which depend 
on glibc having been built.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Joseph Myers]

On Wed, 24 Jan 2018, Palmer Dabbelt wrote:

> I believe we've taken into account all the feedback, and are now below 20 test

Still missing an ldd_rewrite_script setting as mentioned as needed for 
multi-ABI support in 
<https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and 
<https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.

The most important thing to figure out at this point - and then stick to 
(changing your mind after the start of the freeze is not a good way to get 
a port into 2.27) - is the choice of exactly what architecture and ABI 
combinations are supported by the port, as that determines what changes 
are needed to have an internally consistent port without lots of 
untestable code for unsupported combinations, and a significant proportion 
of issues from the patch reviews of multiple versions of the RISC-V port 
have been inconsistencies regarding what is supposed to be supported 
(especially when the choice has changed between versions of the port, 
without the changes being carried out consistently through the whole patch 
series).

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Andreas Schwab wrote:

> On Jan 24 2018, Palmer Dabbelt <palmer@dabbelt.com> wrote:
> 
> > * A system that's fast enough to avoid a handful of timeouts.
> 
> Note that you can set TIMEOUTFACTOR to scale the testsuite timeout.

Or increase the timeouts in the few individual tests that need it - that's 
what I've done when finding tests timing out on slow systems (the vast 
bulk of tests work fine with the default 20 second timeout even on very 
slow systems).

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 08:44:00 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> This v5 patch set contains what we hope is a viable RISC-V port for inclusion
>> into glibc-2.27.  For sanity's sake, we'd like to only mark the rv64gc/lp64d
>> and rv64gc/lp64 ports as stable right now and leave the remaining ports a work
>> in progress -- the rv32 ports are blocked on Linux being a bit flaky, and the
>
> Are those Linux problems being worked on?  When are fixes expected?
> Would you expect to be able to add test results for glibc 2.27 for the
> three RV32 configurations to the wiki page shortly after the release, even
> if the kernel isn't ready yet?

We're working through them, but I'm not sure how long it will take.

> I don't approve of the patch series having an inconsistent message about
> the status of RV32 support.  Either RV32 is supported by the glibc port,
> possibly with a caveat in README like those for i[4567]86-*-gnu and
> hppa-*-linux-gnu (the latter of which caveats should be removed...),
> referring to kernel issues, and is built by build-many-glibcs.py, etc., or
> it's not, in which case you should submit a cleanly RV64-only port, no
> RV32 sysdeps directories or conditionals, with a view to possibly adding
> RV32 later (with a GLIBC_2.28 or later minimum symbol version for RV32 in
> that case).

I think the best thing to do here would be to remove the RV32 ABI lists and 
target it for 2.28.  I don't mind removing the rv32 code as well, I don't think 
it's that tightly coupled to the rv64 code.

>> rv64imac/lp64 port just flat out takes too long to run in simulation (or on an
>
> In my experience, testing MIPS with QEMU takes about three hours per ABI.
> That's doing cross testing, with the compilers running on a Haswell-based
> Xeon and the MIPS programs running via SSH to QEMU system emulation
> running on the same Haswell-based Xeon.  SSH connection sharing is used to
> avoid SSH connection setup overhead for each test, but the build and
> testing is not using parallel make (so such tests can be run in parallel
> for many different configurations, depending on the number of cores you
> have, without slowing down).
>
> That time does not vary significantly between hard and soft float
> libraries.  I would not expect RISC-V testing with QEMU to be
> significantly slower than MIPS, or to have more dependence on whether hard
> or soft float is being tested.  (QEMU of course is emulating target
> floating point in any case - the difference is just between emulation in
> native x86_64 code, versus emulation in target architecture integer code
> which is then translated to x86_64 code by QEMU.)

OK, let me try to get a reasonable environment up locally and run the full test 
suite.

>> FPGA, which is even slower).  The rv64gc/lp64d port is the primary target of
>
> (I've tested for MIPS on FPGAs in the past - as I recall, it was still
> less than a day per ABI, though we've added a lot more tests since then.)
>
>> * Some additional WIP GCC patches.
>
> Are those to go in GCC 8?  GCC 8 and GCC 7?

They'll be targeted for GCC 8, and from the looks of it they're bugfixes so 
I anticipate that they'll be backported to the 7 release branch as well.  Of 
course, we won't know for sure until we have the fixes how we want them for 
GCC.

>> * The latest Linux kernel headers.
>
> Meaning 4.15 release, due out hopefully this weekend, will be good enough?

4.15-rc8 has the relevant patch (to make __NR_riscv_flush_icache), so it'll be 
in the released tarball.

>> Which leaves a total of 15 archicture-specific failures.  The test suite
>> results for rv64gc/lp64 are slightly better than this, Darius can provide links
>> to full results on his website like usual.
>
> I take it these failures are still being worked on (possibly for fixes
> after 2.27), since it's likely there are some remaining glibc or kernel
> bugs to resolve as shown up by these failures?

Yep.  We're working through the additional failures.

>
>>    FAIL: sysvipc/test-sysvmsg
>>    FAIL: sysvipc/test-sysvsem
>>    FAIL: sysvipc/test-sysvshm
>
> E.g. these look very much like there's a problem with SysV IPC in glibc or
> the kernel.

Thanks, we'll take a look.

Re: [PATCH 01/17] Skeleton documentation for the RISC-V port

[Palmer Dabbelt]

On Thu, 25 Jan 2018 08:49:54 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> @@ -98,6 +98,13 @@ Major new features:
>>    to fail to load locales and fall back to the builtin C/POSIX locales.
>>    See notes below for other changes affecting compatibility.
>>
>> +* Support for the RISC-V ISA running on Linux has been added.  This port
>> +  requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
>> +  for the following ISA and ABI pairs:
>> +
>> +    - rv64imafdc lp64
>> +    - rv64imafdc lp64d
>
>> diff --git a/README b/README
>> index d0e99ea7d5a0..425a82956fc8 100644
>> --- a/README
>> +++ b/README
>> @@ -39,6 +39,8 @@ The GNU C Library supports these configurations for using Linux kernels:
>>  	powerpc64*-*-linux-gnu	Big-endian and little-endian.
>>  	s390-*-linux-gnu
>>  	s390x-*-linux-gnu
>> +	riscv32-*-linux-gnu
>> +	riscv64-*-linux-gnu
>
> So, this is an example of the inconsistency about whether RV32 is
> supported or not.  I'd expect one of:
>
> * List all six combinations in NEWS, with appropriate caveats about the
> state of kernel and glibc support for RV32 and soft-float, and a caveat
> about riscv32-*-linux-gnu in README (the latter caveat to be removed later
> once it's known to be working properly).
>
> * Remove the riscv32-*-linux-gnu README entry, and all the other RV32
> support in the port.

Oh, sorry about that, I forgot about the README.  I'm going to proceed for now 
with removing the rv32 support, if it's better to add the caveats then it'll be 
easy to back out the changes.

Re: [PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Palmer Dabbelt]

On Thu, 25 Jan 2018 08:51:05 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> The RISC-V port defines ELF flags that enforce compatibility between
>> various objects.  This adds the shared support necessary for these
>> flags.
>>
>> 2018-01-13  Palmer Dabbelt  <palmer@sifive.com>
>>
>>         * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
>>         FLAG_RISCV_FLOAT_ABI_DOUBLE.
>>         * elf/elf.h (EF_RISCV_RVC): New define.
>>         (EF_RISCV_FLOAT_ABI): Likewise.
>>         (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
>>         (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
>>         (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>>         (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
>>         * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
>>         define.
>>         (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>
> This patch is OK, please commit.

Thanks.  Committed!

Re: [PATCH 13/17] RISC-V: Linux ABI

[Adhemerval Zanella]

On 25/01/2018 15:24, Joseph Myers wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
> 
>> diff --git a/sysdeps/unix/sysv/linux/riscv/flush-icache.c b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
> 
>> +static int __riscv_flush_icache_syscall (void *start, void *end,
>> +					 unsigned long int flags)
>> +{
>> +	return INLINE_SYSCALL (riscv_flush_icache, 3, start, end, flags);
> 
> The formatting is off here.  "static int" on its own line, function name 
> at the start of the next line.  return statement should be indented by two 
> spaces, not a TAB.
> 
>> +  /* RISC-V Linux ABIs mandate the presence of the C extension.  */
>> +  if (flags & EF_RISCV_RVC)
>> +    return 1;
> 
> My understanding is that you should just remove this check; shared 
> libraries are OK both with and without EF_RISCV_RVC, so there should be no 
> need to reject those with it set (or if you need to reject them, you 
> definitely need a different comment explaining why).
> 
>> +#ifdef __USE_MISC
>> +# define NGREG	32
>> +
>> +#define REG_PC 0
>> +#define REG_RA 1
>> +#define REG_SP 2
>> +#define REG_TP 4
>> +#define REG_S0 8
>> +#define REG_S1 9
>> +#define REG_A0 10
>> +#define REG_S2 18
>> +#define REG_NARGS 8
> 
> Missing preprocessor indentation, "# define", on all these REG_* macros.
> 
>> diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h b/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h
> 
> You shouldn't need this file.  All the architecture-specific 
> sysdep-cancel.h files were removed by Adhemerval a while back.
> 

And RISC-V seems to prefer accessing the multiple_threads fields through
TCB (so there is no need to define SINGLE_THREAD_BY_GLOBAL).

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Palmer Dabbelt wrote:

> > I don't approve of the patch series having an inconsistent message about
> > the status of RV32 support.  Either RV32 is supported by the glibc port,
> > possibly with a caveat in README like those for i[4567]86-*-gnu and
> > hppa-*-linux-gnu (the latter of which caveats should be removed...),
> > referring to kernel issues, and is built by build-many-glibcs.py, etc., or
> > it's not, in which case you should submit a cleanly RV64-only port, no
> > RV32 sysdeps directories or conditionals, with a view to possibly adding
> > RV32 later (with a GLIBC_2.28 or later minimum symbol version for RV32 in
> > that case).
> 
> I think the best thing to do here would be to remove the RV32 ABI lists and
> target it for 2.28.  I don't mind removing the rv32 code as well, I don't
> think it's that tightly coupled to the rv64 code.

If you want to remove RV32, go ahead with that (including removing rv32 
sysdeps directories, including removing anything in other files in the 
port that only gets built for rv32 such as the dynamic linker names, ABI 
handling in Makefile etc.).  *All* ABI lists would then go in the rv64 
directory (in that it would no longer be possible to share any ABI 
baselines with rv32, if rv32 uses GLIBC_2.28 or later minimum symbol 
version but rv64 uses GLIBC_2.27).  And send a port version 6 as soon as 
possible (e.g. tomorrow).

Likewise, if you decide not to support soft-float (though I really 
wouldn't expect soft-float to have the testing time problem you describe, 
and I think there are only a few bits of code that are actually 
conditional on soft-float rather than soft-float-ABI).

Make sure your build-many-glibcs.py configuration builds the actually 
supported configurations - and that building those configurations with 
build-many-glibcs.py does actually work.  Given that GCC expects to build 
both RV32 and RV64 multilibs, it's possible you'll need two separate GCC 
builds (one for each ABI), using --disable-multilib, and will only be able 
to reduce to a single GCC build once you support RV32 in glibc.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Jim Wilson]

On 01/25/2018 09:06 AM, Joseph Myers wrote:
> On Thu, 25 Jan 2018, DJ Delorie wrote:
> 
>>> In my experience, testing MIPS with QEMU takes about three hours per ABI.
>>
>> For reference, on the fpga (quad core 64-bit) building glibc natively
>> took a day, and my tests ran for four days before finally hanging
> 
> I don't suggest testing natively on QEMU or FPGA; just executing tests
> there but compiling on a suitably faster system.

There is a known problem with the RISC-V system qemu.  It is flushing 
the TLBs unnecessarily, and this causes it to be much slower than it 
should be.  I did a native gcc-7-branch bootstrap on a fedora disk image 
running on qemu.  It took over 3 days.  There is a pending patch to fix 
the TLB flushing issue, which claims to make dd run 10 times as fast, 
but there is some debate about whether the patch is correct.  Also, the 
underlying code is being rewritten while we try to fix it as we are also 
trying to upstream QEMU at the same time, which requires merging into a 
newer qemu version, which makes the fix more complicated.  This doesn't 
affect user mode QEMU, but glibc testing is working poorly under user 
mode qemu.  Meanwhile, glibc testing on a RISC-V system qemu is working 
OK, but is much slower than it should be, even with the compiles on a 
fast x86_64 machine.

Jim

Re: [PATCH 06/17] RISC-V: Startup and Dynamic Loading Code

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:04:57 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> diff --git a/sysdeps/riscv/crti.S b/sysdeps/riscv/crti.S
>
> I'm wondering if this file should be sysdeps/init_array/crti.S; it seems
> entirely generic and analogous to sysdeps/init_array/pt-crti.S (and
> nothing currently uses sysdeps/init_array - it was previously used by the
> NaCl port - so putting the file in sysdeps/init_array couldn't break
> anything for other ports).

That sounds good to me.  I'm sending a patch to do so.

Re: RISC-V glibc port, v5

[Richard W.M. Jones]

On Thu, Jan 25, 2018 at 05:58:15PM +0000, Joseph Myers wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
> 
> > I believe we've taken into account all the feedback, and are now below 20 test
> 
> Still missing an ldd_rewrite_script setting as mentioned as needed for 
> multi-ABI support in 
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and 
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.
> 
> The most important thing to figure out at this point - and then stick to 
> (changing your mind after the start of the freeze is not a good way to get 
> a port into 2.27) - is the choice of exactly what architecture and ABI 
> combinations are supported by the port, as that determines what changes 
> are needed to have an internally consistent port without lots of 
> untestable code for unsupported combinations, and a significant proportion 
> of issues from the patch reviews of multiple versions of the RISC-V port 
> have been inconsistencies regarding what is supposed to be supported 
> (especially when the choice has changed between versions of the port, 
> without the changes being carried out consistently through the whole patch 
> series).

I don't speak for Palmer nor SiFive, but from my point of view the
urgency to get this in glibc 2.27 is so we can get a stable ABI, which
we can then use to sanely port Fedora & Debian over to RISC-V.

The specific hardware we are targetting initially is the 64 bit SiFive
Freedom U500 [I don't know what the chip will be called in the end -- E500?]
which is RV64GC.

I believe therefore the only stable ABI we care about is rv64gc/lp64d.
Anything else can be unstable/omitted/whatever.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Jim Wilson wrote:

> working poorly under user mode qemu.  Meanwhile, glibc testing on a RISC-V
> system qemu is working OK, but is much slower than it should be, even with the
> compiles on a fast x86_64 machine.

Thanks.  In that case, where I suggested increasing timeouts on selected 
tests (if only a few need increased timeouts), maybe you want to hold off 
on that until you see whether increased timeouts are actually still needed 
with a fixed QEMU.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Joseph Myers wrote:

> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
> 
> > I believe we've taken into account all the feedback, and are now below 20 test
> 
> Still missing an ldd_rewrite_script setting as mentioned as needed for 
> multi-ABI support in 
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and 
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.

And dl-cache.h is missing a definition of add_system_dir.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Richard W.M. Jones wrote:

> I don't speak for Palmer nor SiFive, but from my point of view the
> urgency to get this in glibc 2.27 is so we can get a stable ABI, which
> we can then use to sanely port Fedora & Debian over to RISC-V.

Well, I'd suggest daily (at least) submissions of revised versions of the 
port until we converge on something with no more issues found in review 
and that has sufficiently good test results for all the supported 
configurations.  Even if a port variant is known to build OK but the tests 
are still running, it may be worth posting the patches for review so 
issues are found sooner.

It's up to the people submitting the port what configurations are 
supported, now or in the future - there could be from 1 to 12 ABIs, as I 
understand it.  But there should be some evidence (in the form of 
testsuite results) that the supported ABIs are actually functional at the 
time they are added, and should not be code that's purely for unsupported 
ABIs (such code can be added later as and when support for those ABIs is 
added).

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 08/17] RISC-V: Generic <math.h> and soft-fp Routines

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:12:49 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> FIXME: add ieee745/soft-fp via a riscv/soft-fp directory.
>
> You need to remove that FIXME (and, in general, update patch descriptions
> when sending new versions of a patch series - though in this case it
> doesn't matter so much, as it makes sense for the final commit of a new
> port to go in a single commit, not lots of separate commits of different
> pieces that don't work without each other, so an overall commit message is
> what's needed at that point anyway).
>
>> +/* Despite not supporting trapping exceptions, we support setting
>> +   floating-point exception flags on hard-float targets.  These are not
>> +   supported on soft-float targets.  */
>> +#if __riscv_flen == 0
>> +#define EXCEPTION_TESTS_float 0
>> +#define EXCEPTION_TESTS_double        0
>> +#endif
>
> Missing preprocessor indentation, "# define".
>
>> +/* We don't support the Q extension yet, so long double is always soft float
>> + * and therefor doesn't support exceptions.  */
>> +#define EXCEPTION_TESTS_long_double   0
>
> That's not accurate.  The EXCEPTION_TESTS_long_double definition should be
> inside the same conditional as the others - the RISC-V sfp-machine.h, in
> both glibc and libgcc, already handles making software floating-point
> types use the hardware exceptions and rounding modes when those exist.

OK, thanks, I guess I wasn't aware of how this works.

> (I expect that if you completed a soft-float test run you'd find that
> ROUNDING_TESTS_* definitions, similar to those on other ports, are also
> needed inside that conditional, to disable tests of rounding modes other
> than FE_TONEAREST for soft-float.)

I'm speculatively adding them -- we're still trying to get a rv64imac/lp64 test 
run through to make sure that's sane, if not then I'll remove it before the v5.

Re: [PATCH 12/17] RISC-V: Linux Syscall Interface

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:15:34 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
>> new file mode 100644
>> index 000000000000..8a17c13cbeba
>> --- /dev/null
>> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/lockf64.c
>> @@ -0,0 +1,70 @@
>> +/* Copyright (C) 1994-2018 Free Software Foundation, Inc.
>
> Missing descriptive comment before the copyright notice (if you keep rv32
> sysdeps directories).

Thanks.  It looks like we're going to drop those for now, I'll try to remember 
to fix this up when we resubmit them after 2.27.

Re: [PATCH 13/17] RISC-V: Linux ABI

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:24:45 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> diff --git a/sysdeps/unix/sysv/linux/riscv/flush-icache.c b/sysdeps/unix/sysv/linux/riscv/flush-icache.c
>
>> +static int __riscv_flush_icache_syscall (void *start, void *end,
>> +					 unsigned long int flags)
>> +{
>> +	return INLINE_SYSCALL (riscv_flush_icache, 3, start, end, flags);
>
> The formatting is off here.  "static int" on its own line, function name
> at the start of the next line.  return statement should be indented by two
> spaces, not a TAB.
>
>> +  /* RISC-V Linux ABIs mandate the presence of the C extension.  */
>> +  if (flags & EF_RISCV_RVC)
>> +    return 1;
>
> My understanding is that you should just remove this check; shared
> libraries are OK both with and without EF_RISCV_RVC, so there should be no
> need to reject those with it set (or if you need to reject them, you
> definitely need a different comment explaining why).

Odd, I remember deleting that check...  I guess I must just be crazy!  It 
should really be gone now.

>
>> +#ifdef __USE_MISC
>> +# define NGREG	32
>> +
>> +#define REG_PC 0
>> +#define REG_RA 1
>> +#define REG_SP 2
>> +#define REG_TP 4
>> +#define REG_S0 8
>> +#define REG_S1 9
>> +#define REG_A0 10
>> +#define REG_S2 18
>> +#define REG_NARGS 8
>
> Missing preprocessor indentation, "# define", on all these REG_* macros.

Thanks, I must have missed those when going through last time.

>> diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h b/sysdeps/unix/sysv/linux/riscv/sysdep-cancel.h
>
> You shouldn't need this file.  All the architecture-specific
> sysdep-cancel.h files were removed by Adhemerval a while back.

OK, it's gone now.

Thanks!

Re: [PATCH 15/17] RISC-V: Add ABI Lists

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:25:59 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> The libm-test-ulps* are just placeholders, so they're almost certainly
>> nonsense.
>
> Again, make sure patch descriptions actually relate to that version of the
> patch.

Yes, sorry, I keep forgetting.

Re: [PATCH 17/17] Add RISC-V to build-many-glibcs.py

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:42:20 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
>> index 28c04e66fd52..e3113599beb1 100755
>> --- a/scripts/build-many-glibcs.py
>> +++ b/scripts/build-many-glibcs.py
>> @@ -329,6 +329,12 @@ class Context(object):
>>                          os_name='linux-gnuspe',
>>                          variant='e500v1',
>>                          gcc_cfg=['--disable-multilib', '--enable-secureplt'])
>> +        self.add_config(arch='riscv64',
>> +                        os_name='linux-gnu',
>> +                        glibcs=[{'variant': 'rv64imafdc-lp64d',
>> +                                 'ccopts': '-march=rv64imafdc -mabi=lp64d'},
>> +                                {'variant': 'rv64imac-lp64',
>> +                                 'ccopts': '-march=rv64imac -mabi=lp64'}])
>
> Are you sure this actually works with this version of the port, and
> current upstream GCC?
>
> In patch 16, in this version of the port, the preconfigure script
> disallows soft-float, "glibc does not yet support systems without the F
> extension".  Apart from a few other places in the port with soft-float
> support (again, the port should be consistent about what is or is not
> supported - either have the soft-float support, or not include the code at
> all because it can't be tested - of course most places are actually
> testing for the ABI, but it seems there are a few testing __riscv_flen),
> as I understand it -march=rv64imac means soft-float so wouldn't build
> given patch 16.  *And* GCC's t-linux-multilib looks like it expects both
> 32-bit and 64-bit, hard-float and soft-float ABI multilibs:
>
> MULTILIB_REQUIRED = march=rv32imac/mabi=ilp32 \
> march=rv32imafdc/mabi=ilp32d \
> march=rv64imac/mabi=lp64 \
> march=rv64imafdc/mabi=lp64d
>
> So I'd expect the second GCC build to run into problems when only RV64
> multilibs of glibc but not RV32 ones have been built, because it would try
> to build the RV32 shared libraries of libgcc, libstdc++ etc., which depend
> on glibc having been built.

Sorry, I think I got my signals crossed and didn't get the patches that dropped 
the various bits of support onto the machine that was running 
build-many-glibcs.py.  I'm going to add three (or two, if the soft float 
doesn't make it in time) non-multilib targets that will look something like 
this:

        self.add_config(arch='riscv64',
                        os_name='linux-gnu',
                        variant='rv64imac-lp64',
                        gcc_cfg=['--with-arch=rv64imac', '--with-abi=lp64',
                                 '--disable-multilib'])
        self.add_config(arch='riscv64',
                        os_name='linux-gnu',
                        variant='rv64imafdc-lp64',
                        gcc_cfg=['--with-arch=rv64imafdc', '--with-abi=lp64',
                                 '--disable-multilib'])
        self.add_config(arch='riscv64',
                        os_name='linux-gnu',
                        variant='rv64imafdc-lp64d',
                        gcc_cfg=['--with-arch=rv64imafdc', '--with-abi=lp64d',
                                 '--disable-multilib'])

Re: [patches] Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 09:58:15 PST (-0800), joseph@codesourcery.com wrote:
> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>
>> I believe we've taken into account all the feedback, and are now below 20 test
>
> Still missing an ldd_rewrite_script setting as mentioned as needed for
> multi-ABI support in
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and
> <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.

Sorry about that, it must have slipped through the cracks.  I think this should do it

    $ cat sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed
    s_^\(RTLDLIST=\)\(.*lib/\)\(ld-linux\)-\(riscv64\)-\(lp64\)\(d*\)\(\.so\.[0-9.]*\)_\1"\2\3-\4-\5\7 \2\3-\4-\5d\7"_

with the idea being that I want to produce 

    RTLDLIST="/lib/ld-linux-riscv64-lp64.so.1 /lib/ld-linux-riscv64-lp64d.so.1"

from any RTLDLIST that we input.  It's written such that we can easily extend 
this to support rv32 later, but doesn't do so now.

> The most important thing to figure out at this point - and then stick to
> (changing your mind after the start of the freeze is not a good way to get
> a port into 2.27) - is the choice of exactly what architecture and ABI
> combinations are supported by the port, as that determines what changes
> are needed to have an internally consistent port without lots of
> untestable code for unsupported combinations, and a significant proportion
> of issues from the patch reviews of multiple versions of the RISC-V port
> have been inconsistencies regarding what is supposed to be supported
> (especially when the choice has changed between versions of the port,
> without the changes being carried out consistently through the whole patch
> series).

Yes, sorry about that -- this isn't how I'd like to do things, there's just a 
lot of people with a lot of constraints and I'm trying to make everyone about 
the same amount upset with me.  We're currently trying to get a run of the 
rv64imac/lp64 testsuite through, and I'm aiming to submit another patch set 
tonight that:

* Removes all rv32 support.
* Fixes all the issues that have been raised in response to the v5, at least as 
  well as I can.
* Contains build-many-glibcs.py support for rv64imafdc/lp64d and rv64imafdc/lp64.
* Either contains build-many-glibcs.py support for rv64imac/lp64, or removes 
  our soft-float support entirely.
* Contains test results for the configurations supported in 
  build-many-glibcs.py.

Sorry for all the trouble!

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 10:37:32 PST (-0800), joseph@codesourcery.com wrote:
> On Thu, 25 Jan 2018, Palmer Dabbelt wrote:
>
>> > I don't approve of the patch series having an inconsistent message about
>> > the status of RV32 support.  Either RV32 is supported by the glibc port,
>> > possibly with a caveat in README like those for i[4567]86-*-gnu and
>> > hppa-*-linux-gnu (the latter of which caveats should be removed...),
>> > referring to kernel issues, and is built by build-many-glibcs.py, etc., or
>> > it's not, in which case you should submit a cleanly RV64-only port, no
>> > RV32 sysdeps directories or conditionals, with a view to possibly adding
>> > RV32 later (with a GLIBC_2.28 or later minimum symbol version for RV32 in
>> > that case).
>>
>> I think the best thing to do here would be to remove the RV32 ABI lists and
>> target it for 2.28.  I don't mind removing the rv32 code as well, I don't
>> think it's that tightly coupled to the rv64 code.
>
> If you want to remove RV32, go ahead with that (including removing rv32
> sysdeps directories, including removing anything in other files in the
> port that only gets built for rv32 such as the dynamic linker names, ABI
> handling in Makefile etc.).  *All* ABI lists would then go in the rv64
> directory (in that it would no longer be possible to share any ABI
> baselines with rv32, if rv32 uses GLIBC_2.28 or later minimum symbol
> version but rv64 uses GLIBC_2.27).  And send a port version 6 as soon as
> possible (e.g. tomorrow).

Makes sense.  I've already proceeded down that path, and I think we're pretty 
close.

> Likewise, if you decide not to support soft-float (though I really
> wouldn't expect soft-float to have the testing time problem you describe,
> and I think there are only a few bits of code that are actually
> conditional on soft-float rather than soft-float-ABI).

We're going to try to get the soft float test suite through, Darius has it 
running.

> Make sure your build-many-glibcs.py configuration builds the actually
> supported configurations - and that building those configurations with
> build-many-glibcs.py does actually work.  Given that GCC expects to build
> both RV32 and RV64 multilibs, it's possible you'll need two separate GCC
> builds (one for each ABI), using --disable-multilib, and will only be able
> to reduce to a single GCC build once you support RV32 in glibc.

Sorry I screwed that up this time, I've got it running again.

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 11:59:33 PST (-0800), rjones@redhat.com wrote:
> On Thu, Jan 25, 2018 at 05:58:15PM +0000, Joseph Myers wrote:
>> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>>
>> > I believe we've taken into account all the feedback, and are now below 20 test
>>
>> Still missing an ldd_rewrite_script setting as mentioned as needed for
>> multi-ABI support in
>> <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and
>> <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.
>>
>> The most important thing to figure out at this point - and then stick to
>> (changing your mind after the start of the freeze is not a good way to get
>> a port into 2.27) - is the choice of exactly what architecture and ABI
>> combinations are supported by the port, as that determines what changes
>> are needed to have an internally consistent port without lots of
>> untestable code for unsupported combinations, and a significant proportion
>> of issues from the patch reviews of multiple versions of the RISC-V port
>> have been inconsistencies regarding what is supposed to be supported
>> (especially when the choice has changed between versions of the port,
>> without the changes being carried out consistently through the whole patch
>> series).
>
> I don't speak for Palmer nor SiFive, but from my point of view the
> urgency to get this in glibc 2.27 is so we can get a stable ABI, which
> we can then use to sanely port Fedora & Debian over to RISC-V.

That's the urgency on my end as well -- if we don't get distros started porting 
now, then I'm going to have to add porting a distro to my already crushing 
workload.

> The specific hardware we are targetting initially is the 64 bit SiFive
> Freedom U500 [I don't know what the chip will be called in the end -- E500?]
> which is RV64GC.

The chip is called the "FU540-C000", which follows the same naming 
scheme as our other chip (FE310-G000):

* Freedom means it's a chip, as opposed to just a soft IP.
* U (unleashed) means it's a unix-class processor, as opposed to E (everywhere) 
  means it's an embedded processor.  The difference at the ISA level is 
  essentially just virtual memory, but the microarchitecture on the U chips 
  tends to be a bit beefier as well.
* 5 means it's RV64I, while 3 means it's RV32I.
* 4 means it's IMAFDC, while 1 means it's IMAC.
* I'm not sure what the 0 means :)
* G and C indicate the process used to fabricate the chip: G is TSMC's 180nm 
  Gplus, while C is TSMC's 28nm HPC.
* 000 also doesn't have much meaning yet, but I assume it's another 
  tapeout-specific parameter.

> I believe therefore the only stable ABI we care about is rv64gc/lp64d.
> Anything else can be unstable/omitted/whatever.

I agree.  I'd like to get all the rv64 targets in just for sanity.  Darius just 
got the test results back for rv64imac/lp64 and they look good, so we should be 
all set.

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 12:32:36 PST (-0800), joseph@codesourcery.com wrote:
> On Thu, 25 Jan 2018, Joseph Myers wrote:
>
>> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>>
>> > I believe we've taken into account all the feedback, and are now below 20 test
>>
>> Still missing an ldd_rewrite_script setting as mentioned as needed for
>> multi-ABI support in
>> <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and
>> <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.
>
> And dl-cache.h is missing a definition of add_system_dir.

When I looked through that I didn't think we needed one because libraries were 
always in paths defined by the arch/abi pair.  Our libraries live in 

  */lib64/lp64d
  */lib64/lp64
  */lib

with only ld.so living in */lib (as ld-linux-*.so).  Looking through the 
existing codebases it appears that I'm supposed to be adding all the 
directories in which we could find libraries for any library path argument 
add_system_dir is given.

Given my new understanding of what's going on here, I think this should do it

    /* If given a path to one of our library directories, adds every library
       directory via add_dir (), otherwise just adds the giver directory.  On
       RISC-V, libraries can be found in paths ending in:
         - /lib64/lp64d
         - /lib64/lp64
         - /lib (only ld.so)
       so this will add all of those paths.  */
    #define add_system_dir(dir)                                             \
      do                                                                    \
        {                                                                   \
          size_t len = strlen (dir);                                        \
          char path[len + 10];                                              \
          memcpy (path, dir, len + 1);                                      \
          if (len >= 12 && ! memcmp(path + len - 12, "/lib64/lp64d", 12))   \
            {                                                               \
              len -= 8;                                                     \
              path[len] = '\0';                                             \
            }                                                               \
          if (len >= 11 && ! memcmp(path + len - 11, "/lib64/lp64", 11))    \
            {                                                               \
              len -= 7;                                                     \
              path[len] = '\0';                                             \
            }                                                               \
          add_dir (path);                                                   \
          if (len >= 4 && ! memcmp(path + len - 4, "/lib", 4))              \
            {                                                               \
              memcpy (path + len, "64/lp64d", 10);                          \
              add_dir (path);                                               \
              memcpy (path + len, "64/lp64", 9);                            \
              add_dir (path);                                               \
            }                                                               \
        } while (0)

I'll include this in our v6.

Thanks!

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Thu, 25 Jan 2018 12:52:02 PST (-0800), joseph@codesourcery.com wrote:
> On Thu, 25 Jan 2018, Richard W.M. Jones wrote:
>
>> I don't speak for Palmer nor SiFive, but from my point of view the
>> urgency to get this in glibc 2.27 is so we can get a stable ABI, which
>> we can then use to sanely port Fedora & Debian over to RISC-V.
>
> Well, I'd suggest daily (at least) submissions of revised versions of the
> port until we converge on something with no more issues found in review
> and that has sufficiently good test results for all the supported
> configurations.  Even if a port variant is known to build OK but the tests
> are still running, it may be worth posting the patches for review so
> issues are found sooner.
>
> It's up to the people submitting the port what configurations are
> supported, now or in the future - there could be from 1 to 12 ABIs, as I
> understand it.  But there should be some evidence (in the form of
> testsuite results) that the supported ABIs are actually functional at the
> time they are added, and should not be code that's purely for unsupported
> ABIs (such code can be added later as and when support for those ABIs is
> added).

OK.  I think we're getting close to having a patch set for tonight, and the 
test suite results are looking pretty good!

Re: [patches] Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Palmer Dabbelt wrote:

> On Thu, 25 Jan 2018 09:58:15 PST (-0800), joseph@codesourcery.com wrote:
> > On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
> > 
> > > I believe we've taken into account all the feedback, and are now below 20
> > > test
> > 
> > Still missing an ldd_rewrite_script setting as mentioned as needed for
> > multi-ABI support in
> > <https://sourceware.org/ml/libc-alpha/2018-01/msg00008.html> and
> > <https://sourceware.org/ml/libc-alpha/2018-01/msg00521.html>.
> 
> Sorry about that, it must have slipped through the cracks.  I think this
> should do it
> 
>    $ cat sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed
>    s_^\(RTLDLIST=\)\(.*lib/\)\(ld-linux\)-\(riscv64\)-\(lp64\)\(d*\)\(\.so\.[0-9.]*\)_\1"\2\3-\4-\5\7
> \2\3-\4-\5d\7"_
> 
> with the idea being that I want to produce 
>    RTLDLIST="/lib/ld-linux-riscv64-lp64.so.1 /lib/ld-linux-riscv64-lp64d.so.1"
> 
> from any RTLDLIST that we input.  It's written such that we can easily extend
> this to support rv32 later, but doesn't do so now.

Yes, that looks right.  (The reason for \(.*lib/\) handling being that if 
configured with a non-/usr --prefix, the generated RTLDLIST should also 
reflect that configured prefix.)

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: RISC-V glibc port, v5

[Joseph Myers]

On Thu, 25 Jan 2018, Palmer Dabbelt wrote:

> > And dl-cache.h is missing a definition of add_system_dir.
> 
> When I looked through that I didn't think we needed one because libraries were
> always in paths defined by the arch/abi pair.  Our libraries live in 
>  */lib64/lp64d
>  */lib64/lp64
>  */lib
> 
> with only ld.so living in */lib (as ld-linux-*.so).  Looking through the
> existing codebases it appears that I'm supposed to be adding all the
> directories in which we could find libraries for any library path argument
> add_system_dir is given.

Yes.  My reasoning for that would be: generic autoconf-configured (etc.) 
software may only know about using the lib directory, so you want the lib 
directory to be searched regardless of the ABI - but it's also useful to 
be able to e.g. list /usr/local/lib in /etc/ld.so.conf for all 
architectures and have that automatically imply /usr/local/lib64/lp64d 
etc. so that libraries can be found that come from software that does use 
the ABI-specific directories.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: [PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Szabolcs Nagy]

On 25/01/18 18:09, Palmer Dabbelt wrote:
> On Thu, 25 Jan 2018 08:51:05 PST (-0800), joseph@codesourcery.com wrote:
>> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>>
>>> The RISC-V port defines ELF flags that enforce compatibility between
>>> various objects.  This adds the shared support necessary for these
>>> flags.
>>>
>>> 2018-01-13  Palmer Dabbelt  <palmer@sifive.com>
>>>
>>>         * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
>>>         FLAG_RISCV_FLOAT_ABI_DOUBLE.
>>>         * elf/elf.h (EF_RISCV_RVC): New define.
>>>         (EF_RISCV_FLOAT_ABI): Likewise.
>>>         (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
>>>         (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
>>>         (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>>>         (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
>>>         * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
>>>         define.
>>>         (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>>
>> This patch is OK, please commit.
> 
> Thanks.  Committed!

note that the FLAG_RISCV_FLOAT_ABI_SOFT ldconfig.h macro
value conflicts with the arm/ilp32 branch, i can update this
in the ilp32 branch but ldconfig will print existing ilp32
ld.so.cache files incorrectly.

Re: RISC-V glibc port, v5

[Palmer Dabbelt]

On Fri, 26 Jan 2018 04:08:59 PST (-0800), joseph@codesourcery.com wrote:
> On Thu, 25 Jan 2018, Palmer Dabbelt wrote:
>
>> > And dl-cache.h is missing a definition of add_system_dir.
>>
>> When I looked through that I didn't think we needed one because libraries were
>> always in paths defined by the arch/abi pair.  Our libraries live in
>>  */lib64/lp64d
>>  */lib64/lp64
>>  */lib
>>
>> with only ld.so living in */lib (as ld-linux-*.so).  Looking through the
>> existing codebases it appears that I'm supposed to be adding all the
>> directories in which we could find libraries for any library path argument
>> add_system_dir is given.
>
> Yes.  My reasoning for that would be: generic autoconf-configured (etc.)
> software may only know about using the lib directory, so you want the lib
> directory to be searched regardless of the ABI - but it's also useful to
> be able to e.g. list /usr/local/lib in /etc/ld.so.conf for all
> architectures and have that automatically imply /usr/local/lib64/lp64d
> etc. so that libraries can be found that come from software that does use
> the ABI-specific directories.

OK, that makes sense.  I'm going to add that to our port, just in case anyone 
else ends up coming across this and wondering what it's there for.

Re: [PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Palmer Dabbelt]

On Fri, 26 Jan 2018 07:49:44 PST (-0800), szabolcs.nagy@arm.com wrote:
> On 25/01/18 18:09, Palmer Dabbelt wrote:
>> On Thu, 25 Jan 2018 08:51:05 PST (-0800), joseph@codesourcery.com wrote:
>>> On Wed, 24 Jan 2018, Palmer Dabbelt wrote:
>>>
>>>> The RISC-V port defines ELF flags that enforce compatibility between
>>>> various objects.  This adds the shared support necessary for these
>>>> flags.
>>>>
>>>> 2018-01-13  Palmer Dabbelt  <palmer@sifive.com>
>>>>
>>>>         * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
>>>>         FLAG_RISCV_FLOAT_ABI_DOUBLE.
>>>>         * elf/elf.h (EF_RISCV_RVC): New define.
>>>>         (EF_RISCV_FLOAT_ABI): Likewise.
>>>>         (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
>>>>         (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
>>>>         (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>>>>         (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
>>>>         * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
>>>>         define.
>>>>         (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
>>>
>>> This patch is OK, please commit.
>>
>> Thanks.  Committed!
>
> note that the FLAG_RISCV_FLOAT_ABI_SOFT ldconfig.h macro
> value conflicts with the arm/ilp32 branch, i can update this
> in the ilp32 branch but ldconfig will print existing ilp32
> ld.so.cache files incorrectly.

Oh, sorry about that.  I don't mind changing our flag value, what should I make 
it?

Re: [PATCH 03/17] Add support for the RISC-V-specific ELF flags

[Joseph Myers]

On Fri, 26 Jan 2018, Szabolcs Nagy wrote:

> note that the FLAG_RISCV_FLOAT_ABI_SOFT ldconfig.h macro
> value conflicts with the arm/ilp32 branch, i can update this
> in the ilp32 branch but ldconfig will print existing ilp32
> ld.so.cache files incorrectly.

I don't think we expect ld.so.cache compatibility between different 
releases, and certainly not between releases and versions not on master.

Indeed, that was the basis on which I reviewed the patch - because at the 
time the patch series included RV32 support, so there were actually four 
ABIs involved, and so if the Linux kernel gained support for running RV32 
binaries on RV64 systems, four rather than two flag values would be needed 
and there would be incompatibility in those values for whichever of RV32 
and RV64 changed values.

(If RV32 support is added in future to glibc without the multi-ABI support 
for ldconfig / ldd / ld.so.cache for RV32 binaries on RV64 systems, I'd 
still consider it OK just to keep the two values.  It's only at the point 
where you add support for RV32 binaries on RV64 systems that it needs to 
become four values, and as per the above, I'm assuming it's OK to change 
the meaning of ld.so.cache values at that point.)

-- 
Joseph S. Myers
joseph@codesourcery.com