diff mbox series

[v3,11/19] RISC-V: Hard float support for 32-bit

Message ID	55e8f6583006bf80653190c3f0f56979f15facfc.1594568655.git.alistair.francis@wdc.com
State	Committed
Headers	DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0CE873857027 IronPort-SDR: WMMrJVIWfJBm676HkN6SCbi8obq84KPbET5l395YO717e/zNRM2zpyPm3YEbNHnsyEeBfZ8322 N2yQBLt3bZxbSvlBjNgP7gVkXlpbD4CCZARweQBiE1p1BqKWmVLe/uBWyB93XPgzhgkbP1Mr4z q2ZhBGgogWrldXkcOn7SvbM0V8/qonkK9DZH57kyFnZFx+u0ZPR5hvIrsvT6K+Udbce7WDz1aX 2T62ussANNKXcFQgmTnLcceNzyhpP35sZA/wkXh4ym4eSNa4AzNl4rXohgdk8MJGsB7LD6JkS/ YJM= IronPort-SDR: EMxoqXv1rsocS5L1+K2PadPSETxoO7mYzopUPR49UMGle1eUmu615liuIuDOP4XbGal/2iRdFE vm+V6XU9fE87Gnwk0alZgvr1UTKA77SjE= IronPort-SDR: 1Wlcq42Hh0PIcl59pFG4eXzbWLvxtoKSwbaHzXxxcsQPGXy3kRa6mwiMEhZPkQKmLl+HcRezAS I8jHQkEwRJ0Q== WDCIronportException: Internal To: libc-alpha@sourceware.org Subject: [PATCH v3 11/19] RISC-V: Hard float support for 32-bit Date: Sun, 12 Jul 2020 08:47:49 -0700 Message-Id: <55e8f6583006bf80653190c3f0f56979f15facfc.1594568655.git.alistair.francis@wdc.com> In-Reply-To: <cover.1594568655.git.alistair.francis@wdc.com> References: <cover.1594568655.git.alistair.francis@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list From: Alistair Francis via Libc-alpha <libc-alpha@sourceware.org> Reply-To: Alistair Francis <alistair.francis@wdc.com> Cc: alistair.francis@wdc.com Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" <libc-alpha-bounces@sourceware.org>
Series	glibc port for 32-bit RISC-V (RV32) \| [v3,00/19] glibc port for 32-bit RISC-V (RV32) [v3,01/19] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64 [v3,02/19] RISC-V: Cleanup some of the sysdep.h code [v3,03/19] RISC-V: Use 64-bit-time syscall numbers with the 32-bit port [v3,04/19] RISC-V: Add support for 32-bit vDSO calls [v3,05/19] RISC-V: Support dynamic loader for the 32-bit [v3,06/19] sysv/linux: riscv: Fix dl-cache.h indentation [v3,07/19] RISC-V: Add path of library directories for the 32-bit [v3,08/19] RISC-V: Add arch-syscall.h for RV32 [v3,09/19] RISC-V: nptl: update default pthread-offsets.h [v3,10/19] RISC-V: Support the 32-bit ABI implementation [v3,11/19] RISC-V: Hard float support for 32-bit [v3,12/19] RISC-V: Add ABI lists [v3,13/19] RISC-V: Add the RV32 libm-test-ulps [v3,14/19] RISC-V: Fix llrint and llround missing exceptions on RV32 [v3,15/19] RISC-V: Build Infastructure for 32-bit [v3,16/19] riscv32: Specify the arch_minimum_kernel as 5.4 [v3,17/19] RISC-V: Add rv32 path to RTLDLIST in ldd [v3,18/19] Documentation for the RISC-V 32-bit port [v3,19/19] Add RISC-V 32-bit target to build-many-glibcs.py

Commit Message

Alistair Francis July 12, 2020, 3:47 p.m. UTC

  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

Comments

Maciej W. Rozycki July 16, 2020, 8:27 a.m. UTC | #1

On Sun, 12 Jul 2020, Alistair Francis via Libc-alpha wrote:

> diff --git a/sysdeps/riscv/rv32/rvd/s_lrint.c b/sysdeps/riscv/rv32/rvd/s_lrint.c
> new file mode 100644
> index 0000000000..bdec792f18
> --- /dev/null
> +++ b/sysdeps/riscv/rv32/rvd/s_lrint.c
> @@ -0,0 +1,31 @@
> +/* lrint().  The 32-bit RISC-V (RV32) version.

 Thanks for this update, however...

> diff --git a/sysdeps/riscv/rv32/rvd/s_lround.c b/sysdeps/riscv/rv32/rvd/s_lround.c
> new file mode 100644
> index 0000000000..51cb020e48
> --- /dev/null
> +++ b/sysdeps/riscv/rv32/rvd/s_lround.c
> @@ -0,0 +1,31 @@
> +/* lround().  RISC-V version.

... it also has to come here, ...

> diff --git a/sysdeps/riscv/rv32/rvf/s_lrintf.c b/sysdeps/riscv/rv32/rvf/s_lrintf.c
> new file mode 100644
> index 0000000000..e9aee00cab
> --- /dev/null
> +++ b/sysdeps/riscv/rv32/rvf/s_lrintf.c
> @@ -0,0 +1,31 @@
> +/* lrintf().  RISC-V version.

... and here, ...

> diff --git a/sysdeps/riscv/rv32/rvf/s_lroundf.c b/sysdeps/riscv/rv32/rvf/s_lroundf.c
> new file mode 100644
> index 0000000000..3b5ca73a5e
> --- /dev/null
> +++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c
> @@ -0,0 +1,31 @@
> +/* lroundf().  RISC-V version.

... and here.

  Maciej

diff mbox series

Patch

diff --git a/sysdeps/riscv/rv32/rvd/s_lrint.c b/sysdeps/riscv/rv32/rvd/s_lrint.c
new file mode 100644
index 0000000000..bdec792f18
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lrint.c
@@ -0,0 +1,31 @@ 
+/* lrint().  The 32-bit RISC-V (RV32) 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/>.  */
+
+#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..51cb020e48
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lround.c
@@ -0,0 +1,31 @@ 
+/* lround().  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/>.  */
+
+#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..e9aee00cab
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lrintf.c
@@ -0,0 +1,31 @@ 
+/* lrintf().  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/>.  */
+
+#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..3b5ca73a5e
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c
@@ -0,0 +1,31 @@ 
+/* lroundf().  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/>.  */
+
+#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)