From: Alistair Francis via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Cc: alistair.francis@wdc.com
Subject: [PATCH v3 01/19] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64
Date: Sun, 12 Jul 2020 08:47:23 -0700 [thread overview]
Message-ID: <6c5860daa78b04cc33a0de16a1370a2dfd0820f2.1594568655.git.alistair.francis@wdc.com> (raw)
In-Reply-To: <cover.1594568655.git.alistair.francis@wdc.com>
Using the original glibc headers under bits/ let's make small
modifications to use 64-bit time_t and off_t for both RV32 and RV64.
For the typesizes.h, here are justifications for the changes from the
generic version (based on Arnd's very helpful feedback):
- All the !__USE_FILE_OFFSET64 types (__off_t, __ino_t, __rlim_t, ...)
are changed to match the 64-bit replacements.
- __time_t is defined to 64 bit, but no __time64_t is added. This makes
sense as we don't have the time64 support for other 32-bit
architectures yet, and it will be easy to change when that happens.
- __suseconds_t is 64-bit. This matches what we use the kernel ABI for
the few drivers that are relying on 'struct timeval' input arguments
in ioctl, as well as the adjtimex system call. It means that timeval
has to be defined without the padding, unlike timespec, which needs
padding.
---
.../unix/sysv/linux/riscv/bits/environments.h | 81 +++++++++++++++++++
sysdeps/unix/sysv/linux/riscv/bits/time64.h | 36 +++++++++
sysdeps/unix/sysv/linux/riscv/bits/timesize.h | 22 +++++
sysdeps/unix/sysv/linux/riscv/kernel_stat.h | 23 ++++++
4 files changed, 162 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/environments.h
create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/time64.h
create mode 100644 sysdeps/unix/sysv/linux/riscv/bits/timesize.h
create mode 100644 sysdeps/unix/sysv/linux/riscv/kernel_stat.h
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/environments.h b/sysdeps/unix/sysv/linux/riscv/bits/environments.h
new file mode 100644
index 0000000000..9ee21a217d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/environments.h
@@ -0,0 +1,81 @@
+/* Copyright (C) 2020 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _UNISTD_H
+# error "Never include this file directly. Use <unistd.h> instead"
+#endif
+
+#include <bits/wordsize.h>
+
+/* This header should define the following symbols under the described
+ situations. A value `1' means that the model is always supported,
+ `-1' means it is never supported. Undefined means it cannot be
+ statically decided.
+
+ _POSIX_V7_ILP32_OFF32 32bit int, long, pointers, and off_t type
+ _POSIX_V7_ILP32_OFFBIG 32bit int, long, and pointers and larger off_t type
+
+ _POSIX_V7_LP64_OFF32 64bit long and pointers and 32bit off_t type
+ _POSIX_V7_LPBIG_OFFBIG 64bit long and pointers and large off_t type
+
+ The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG,
+ _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32,
+ _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were
+ used in previous versions of the Unix standard and are available
+ only for compatibility.
+*/
+
+#if __WORDSIZE == 64
+
+/* We can never provide environments with 32-bit wide pointers. */
+# define _POSIX_V7_ILP32_OFF32 -1
+# define _POSIX_V7_ILP32_OFFBIG -1
+# define _POSIX_V6_ILP32_OFF32 -1
+# define _POSIX_V6_ILP32_OFFBIG -1
+# define _XBS5_ILP32_OFF32 -1
+# define _XBS5_ILP32_OFFBIG -1
+/* We also have no use (for now) for an environment with bigger pointers
+ and offsets. */
+# define _POSIX_V7_LPBIG_OFFBIG -1
+# define _POSIX_V6_LPBIG_OFFBIG -1
+# define _XBS5_LPBIG_OFFBIG -1
+
+/* By default we have 64-bit wide `long int', pointers and `off_t'. */
+# define _POSIX_V7_LP64_OFF64 1
+# define _POSIX_V6_LP64_OFF64 1
+# define _XBS5_LP64_OFF64 1
+
+#else /* __WORDSIZE == 32 */
+
+/* RISC-V requires 64-bit off_t */
+# define _POSIX_V7_ILP32_OFF32 -1
+# define _POSIX_V6_ILP32_OFF32 -1
+# define _XBS5_ILP32_OFF32 -1
+
+# define _POSIX_V7_ILP32_OFFBIG 1
+# define _POSIX_V6_ILP32_OFFBIG 1
+# define _XBS5_ILP32_OFFBIG 1
+
+/* We can never provide environments with 64-bit wide pointers. */
+# define _POSIX_V7_LP64_OFF64 -1
+# define _POSIX_V7_LPBIG_OFFBIG -1
+# define _POSIX_V6_LP64_OFF64 -1
+# define _POSIX_V6_LPBIG_OFFBIG -1
+# define _XBS5_LP64_OFF64 -1
+# define _XBS5_LPBIG_OFFBIG -1
+
+#endif /* __WORDSIZE == 32 */
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/time64.h b/sysdeps/unix/sysv/linux/riscv/bits/time64.h
new file mode 100644
index 0000000000..139a7c7335
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/time64.h
@@ -0,0 +1,36 @@
+/* bits/time64.h -- underlying types for __time64_t. RISC-V version.
+ Copyright (C) 2020 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_TYPES_H
+# error "Never include <bits/time64.h> directly; use <sys/types.h> instead."
+#endif
+
+#ifndef _BITS_TIME64_H
+#define _BITS_TIME64_H 1
+
+/* Define __TIME64_T_TYPE so that it is always a 64-bit type. */
+
+#if __WORDSIZE == 64
+/* If we already have 64-bit time type then use it. */
+# define __TIME64_T_TYPE __TIME_T_TYPE
+#else
+/* Define a 64-bit time type alongsize the 32-bit one. */
+# define __TIME64_T_TYPE __SQUAD_TYPE
+#endif
+
+#endif /* bits/time64.h */
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/timesize.h b/sysdeps/unix/sysv/linux/riscv/bits/timesize.h
new file mode 100644
index 0000000000..728d6c5053
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/bits/timesize.h
@@ -0,0 +1,22 @@
+/* Bit size of the time_t type at glibc build time, RISC-V case.
+ Copyright (C) 2020 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <bits/wordsize.h>
+
+/* RV32 and RV64 both use 64-bit time_t */
+#define __TIMESIZE 64
diff --git a/sysdeps/unix/sysv/linux/riscv/kernel_stat.h b/sysdeps/unix/sysv/linux/riscv/kernel_stat.h
new file mode 100644
index 0000000000..06eb5bce96
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/riscv/kernel_stat.h
@@ -0,0 +1,23 @@
+/* Copyright (C) 2020 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <bits/wordsize.h>
+
+#define STAT_IS_KERNEL_STAT 1
+
+#define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
--
2.27.0
next prev parent reply other threads:[~2020-07-12 15:57 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-12 15:47 [PATCH v3 00/19] glibc port for 32-bit RISC-V (RV32) Alistair Francis via Libc-alpha
2020-07-12 15:47 ` Alistair Francis via Libc-alpha [this message]
2020-07-15 17:29 ` [PATCH v3 01/19] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64 Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 02/19] RISC-V: Cleanup some of the sysdep.h code Alistair Francis via Libc-alpha
2020-07-16 1:07 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 15:16 ` Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 03/19] RISC-V: Use 64-bit-time syscall numbers with the 32-bit port Alistair Francis via Libc-alpha
2020-07-16 1:58 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 15:15 ` Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 04/19] RISC-V: Add support for 32-bit vDSO calls Alistair Francis via Libc-alpha
2020-07-16 0:12 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 05/19] RISC-V: Support dynamic loader for the 32-bit Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 06/19] sysv/linux: riscv: Fix dl-cache.h indentation Alistair Francis via Libc-alpha
2020-07-16 6:31 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 07/19] RISC-V: Add path of library directories for the 32-bit Alistair Francis via Libc-alpha
2020-07-16 7:03 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 08/19] RISC-V: Add arch-syscall.h for RV32 Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 09/19] RISC-V: nptl: update default pthread-offsets.h Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 10/19] RISC-V: Support the 32-bit ABI implementation Alistair Francis via Libc-alpha
2020-07-16 8:23 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 11/19] RISC-V: Hard float support for 32-bit Alistair Francis via Libc-alpha
2020-07-16 8:27 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 12/19] RISC-V: Add ABI lists Alistair Francis via Libc-alpha
2020-07-12 15:47 ` [PATCH v3 13/19] RISC-V: Add the RV32 libm-test-ulps Alistair Francis via Libc-alpha
2020-07-13 17:14 ` Maciej W. Rozycki via Libc-alpha
2020-07-13 17:32 ` Alistair Francis via Libc-alpha
2020-07-13 19:19 ` Maciej W. Rozycki via Libc-alpha
2020-07-13 19:38 ` Carlos O'Donell via Libc-alpha
2020-07-30 23:11 ` [PATCH] RISC-V: Update lp64d libm-test-ulps according to HiFive Unleashed Maciej W. Rozycki via Libc-alpha
2020-08-03 17:52 ` Carlos O'Donell via Libc-alpha
2020-08-04 12:01 ` Maciej W. Rozycki via Libc-alpha
2020-07-13 21:26 ` [PATCH v3 13/19] RISC-V: Add the RV32 libm-test-ulps Joseph Myers
2020-07-13 21:30 ` Carlos O'Donell via Libc-alpha
2020-07-13 21:59 ` Joseph Myers
2020-07-13 22:26 ` Andrew Waterman
2020-07-14 0:00 ` Maciej W. Rozycki via Libc-alpha
2020-07-14 17:24 ` Joseph Myers
2020-07-12 15:47 ` [PATCH v3 14/19] RISC-V: Fix llrint and llround missing exceptions on RV32 Alistair Francis via Libc-alpha
2020-07-14 22:13 ` Maciej W. Rozycki via Libc-alpha
2020-07-22 16:30 ` Alistair Francis via Libc-alpha
2020-07-12 15:48 ` [PATCH v3 15/19] RISC-V: Build Infastructure for 32-bit Alistair Francis via Libc-alpha
2020-07-14 23:55 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 15:45 ` Alistair Francis via Libc-alpha
2020-07-12 15:48 ` [PATCH v3 16/19] riscv32: Specify the arch_minimum_kernel as 5.4 Alistair Francis via Libc-alpha
2020-07-15 0:06 ` Maciej W. Rozycki via Libc-alpha
2020-07-16 1:34 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:48 ` [PATCH v3 17/19] RISC-V: Add rv32 path to RTLDLIST in ldd Alistair Francis via Libc-alpha
2020-07-15 0:32 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 20:04 ` Alistair Francis via Libc-alpha
2020-07-12 15:48 ` [PATCH v3 18/19] Documentation for the RISC-V 32-bit port Alistair Francis via Libc-alpha
2020-07-13 17:17 ` Adhemerval Zanella via Libc-alpha
2020-07-14 13:28 ` Alistair Francis via Libc-alpha
2020-07-15 0:53 ` Maciej W. Rozycki via Libc-alpha
2020-07-22 16:33 ` Alistair Francis via Libc-alpha
2020-07-12 15:48 ` [PATCH v3 19/19] Add RISC-V 32-bit target to build-many-glibcs.py Alistair Francis via Libc-alpha
2020-07-15 1:16 ` Maciej W. Rozycki via Libc-alpha
2020-07-13 21:15 ` [PATCH v3 00/19] glibc port for 32-bit RISC-V (RV32) Joseph Myers
2020-07-14 13:18 ` Alistair Francis via Libc-alpha
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