From: Zong Li <zong@andestech.com>
To: <joseph@codesourcery.com>, <libc-alpha@sourceware.org>,
<palmer@dabbelt.com>, <darius@bluespec.com>, <andrew@sifive.com>,
<dj@redhat.com>
Cc: <zongbox@gmail.com>, Zong Li <zong@andestech.com>
Subject: [PATCH 5/9] RISC-V: Hard float support for the 32 bit
Date: Thu, 12 Jul 2018 10:27:00 -0000 [thread overview]
Message-ID: <cbc0a7fbbbcbcd9874917f2606f690eb6ba0118e.1531384754.git.zong@andestech.com> (raw)
In-Reply-To: <cover.1531384753.git.zong@andestech.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 0000000..4d5bdbc
--- /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 0000000..f5d9cf2
--- /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 0000000..08d44fa
--- /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 0000000..f31b432
--- /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)
--
2.7.4
next prev parent reply other threads:[~2018-07-12 10:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-12 10:27 [PATCH 0/9] RISC-V glibc port " Zong Li
2018-07-12 10:27 ` [PATCH 9/9] Add 32 bit RISC-V to build-many-glibcs.py Zong Li
2018-07-12 10:27 ` Zong Li [this message]
2018-07-12 10:27 ` [PATCH 4/9] RISC-V: The ABI implementation for the 32-bit Zong Li
2018-07-12 10:27 ` [PATCH 3/9] RISC-V: Add path of library directories for the 32 bit Zong Li
2018-07-12 10:27 ` [PATCH 2/9] RISC-V: Add dynamic loader " Zong Li
2018-07-12 10:27 ` [PATCH 1/9] Documentation for the 32 bit RISC-V port Zong Li
2018-07-12 10:27 ` [PATCH 6/9] RISC-V: Split the soft-fp into rv32 and rv64 Zong Li
2018-07-12 17:46 ` Richard Henderson
2018-07-13 1:00 ` Zong Li
2018-07-13 10:34 ` Richard Henderson
2018-07-13 13:19 ` Zong Li
2018-07-13 13:49 ` Richard Henderson
2018-07-13 13:55 ` Zong Li
2018-07-12 10:27 ` [PATCH 8/9] RISC-V: Build Infastructure for the 32 bit Zong Li
2018-07-12 10:28 ` [PATCH 7/9] RISC-V: Add ABI lists Zong Li
2018-07-31 18:49 ` [PATCH 0/9] RISC-V glibc port for the 32 bit Jim Wilson
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cbc0a7fbbbcbcd9874917f2606f690eb6ba0118e.1531384754.git.zong@andestech.com \
--to=zong@andestech.com \
--cc=andrew@sifive.com \
--cc=darius@bluespec.com \
--cc=dj@redhat.com \
--cc=joseph@codesourcery.com \
--cc=libc-alpha@sourceware.org \
--cc=palmer@dabbelt.com \
--cc=zongbox@gmail.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).