From: Alistair Francis via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Cc: alistair.francis@wdc.com
Subject: [PATCH v2 10/18] RISC-V: Hard float support for 32-bit
Date: Wed, 3 Jun 2020 09:25:52 -0700 [thread overview]
Message-ID: <ba0fe98b9606d68e367c307a7ccfe617c541ed73.1591201405.git.alistair.francis@wdc.com> (raw)
In-Reply-To: <cover.1591201405.git.alistair.francis@wdc.com>
From: Zong Li <zongbox@gmail.com>
This patch contains hardware floating-point support for the RV32IF and
RV32IFD
---
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/rv32/rvf/s_lroundf.c | 31 ++++++++++++++++++++++++++++++
4 files changed, 124 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/rv32/rvf/s_lroundf.c
diff --git a/sysdeps/riscv/rv32/rvd/s_lrint.c b/sysdeps/riscv/rv32/rvd/s_lrint.c
new file mode 100644
index 0000000000..df406aacb6
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lrint.c
@@ -0,0 +1,31 @@
+/* lrint(). RISC-V version.
+ Copyright (C) 2017-2020 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
+ <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 0000000000..72aa2b179d
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lround.c
@@ -0,0 +1,31 @@
+/* lround(). RISC-V version.
+ Copyright (C) 2017-2020 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
+ <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 0000000000..08d44fa738
--- /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/rv32/rvf/s_lroundf.c b/sysdeps/riscv/rv32/rvf/s_lroundf.c
new file mode 100644
index 0000000000..9ff5d63d1c
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c
@@ -0,0 +1,31 @@
+/* lroundf(). RISC-V version.
+ Copyright (C) 2017-2020 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
+ <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)
--
2.26.2
next prev parent reply other threads:[~2020-06-03 16:35 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-03 16:25 [PATCH v2 00/18] glibc port for 32-bit RISC-V (RV32) Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 01/18] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64 Alistair Francis via Libc-alpha
2020-07-07 22:06 ` Maciej W. Rozycki via Libc-alpha
2020-07-10 15:27 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 02/18] RISC-V: Define __NR_* as __NR_*_time64/64 for 32-bit Alistair Francis via Libc-alpha
2020-07-08 0:09 ` Maciej W. Rozycki via Libc-alpha
2020-07-08 17:08 ` Adhemerval Zanella via Libc-alpha
2020-07-09 17:14 ` Alistair Francis via Libc-alpha
2020-07-16 0:23 ` Maciej W. Rozycki via Libc-alpha
2020-07-09 17:10 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 03/18] RISC-V: Add support for 32-bit vDSO calls Alistair Francis via Libc-alpha
2020-07-08 1:01 ` Maciej W. Rozycki via Libc-alpha
2020-07-08 18:17 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 04/18] RISC-V: Support dynamic loader for the 32-bit Alistair Francis via Libc-alpha
2020-07-08 1:35 ` Maciej W. Rozycki via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 05/18] RISC-V: Add path of library directories " Alistair Francis via Libc-alpha
2020-07-08 18:42 ` Maciej W. Rozycki via Libc-alpha
2020-07-09 17:03 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 06/18] RISC-V: Add arch-syscall.h for RV32 Alistair Francis via Libc-alpha
2020-07-08 19:33 ` Maciej W. Rozycki via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 07/18] RISC-V: nptl: update default pthread-offsets.h Alistair Francis via Libc-alpha
2020-07-09 0:14 ` Maciej W. Rozycki via Libc-alpha
2020-07-09 11:47 ` Adhemerval Zanella via Libc-alpha
2020-07-15 19:23 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 17:34 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 08/18] riscv32: Add an architecture ipctypes.h Alistair Francis via Libc-alpha
2020-07-09 2:46 ` Maciej W. Rozycki via Libc-alpha
2020-07-09 11:36 ` Adhemerval Zanella via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 09/18] RISC-V: The ABI implementation for 32-bit Alistair Francis via Libc-alpha
2020-07-09 23:33 ` Maciej W. Rozycki via Libc-alpha
2020-07-10 16:45 ` Alistair Francis via Libc-alpha
2020-07-11 1:24 ` Maciej W. Rozycki via Libc-alpha
2020-08-10 21:29 ` Alistair Francis via Libc-alpha
2020-08-27 19:43 ` Adhemerval Zanella via Libc-alpha
2020-09-25 23:03 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` Alistair Francis via Libc-alpha [this message]
2020-07-11 0:49 ` [PATCH v2 10/18] RISC-V: Hard float support " Maciej W. Rozycki via Libc-alpha
2020-07-11 15:49 ` Alistair Francis via Libc-alpha
2020-07-11 22:13 ` Maciej W. Rozycki via Libc-alpha
2020-07-12 15:34 ` Alistair Francis via Libc-alpha
2020-07-12 22:10 ` Maciej W. Rozycki via Libc-alpha
2020-08-27 18:36 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 11/18] RISC-V: Add ABI lists Alistair Francis via Libc-alpha
2020-07-12 20:54 ` Maciej W. Rozycki via Libc-alpha
2020-07-13 16:14 ` Alistair Francis via Libc-alpha
2020-06-03 16:25 ` [PATCH v2 12/18] RISC-V: Add the RV32 libm-test-ulps Alistair Francis via Libc-alpha
2020-06-03 17:34 ` Joseph Myers
2020-06-05 4:01 ` Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 13/18] RISC-V: Fix llrint and llround missing exceptions on RV32 Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 14/18] RISC-V: Build Infastructure for 32-bit Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 15/18] riscv32: Specify the arch_minimum_kernel as 5.4 Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 16/18] RISC-V: Add rv32 path to RTLDLIST in ldd Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 17/18] Documentation for the RISC-V 32-bit port Alistair Francis via Libc-alpha
2020-06-03 16:26 ` [PATCH v2 18/18] Add RISC-V 32-bit target to build-many-glibcs.py Alistair Francis via Libc-alpha
2020-06-15 22:37 ` [PATCH v2 00/18] glibc port for 32-bit RISC-V (RV32) Alistair Francis via Libc-alpha
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/libc/involved.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ba0fe98b9606d68e367c307a7ccfe617c541ed73.1591201405.git.alistair.francis@wdc.com \
--to=libc-alpha@sourceware.org \
--cc=alistair.francis@wdc.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).