diff mbox series

[v4,10/18] RISC-V: Hard float support for 32-bit

Message ID	be0c52b0d5b5e3c2f9a4e3f31a27d2d2fbf6e435.1597243100.git.alistair.francis@wdc.com
State	Committed
Headers	DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0706A3857C40 IronPort-SDR: Nx1bsO7xxBNehlq6F8s3X70cV+Utio7p7RpwnnyIp37rnUqJJajUUy6fdvadTu58W1BdJ6U8SN mcjktR39o//5oWpu5EKCTGOVfJQkh+hE6NVnGh1WS1EVEpNFKgIKYHfZpfMqUnGvRk4gDOBt26 /9FZW8NtFl+xh2t+c/WlWpV46B4SOn09Gp3vUZDFQkObDR+ia5saIANAiOZe5jHMGgWGuiVDaN kqnjF56eNfIYqdU/jbUtvUI8uRoAxz8yMogu5Gkx1jBh5MBGlRsLApcvRfBwM2h5DcL2GwQWed FNM= IronPort-SDR: rivfZJBc1KFDlEAwZcxMhyoPPXvmbLy0HxRacTpAgwj7TNpW77pQ1TDzaAYJ6m8qCkCwtJUSeL /GI9Hn4wZwvg== IronPort-SDR: F6oasgvG36p7VcybgNsg3s86MPDamrD9dPUNsJNE2nzM9mXWjP/JmGMSh4tNNwO2tr/nA4FyAg vu8fNSCe6QkQ== WDCIronportException: Internal To: libc-alpha@sourceware.org Subject: [PATCH v4 10/18] RISC-V: Hard float support for 32-bit Date: Wed, 12 Aug 2020 07:41:22 -0700 Message-Id: <be0c52b0d5b5e3c2f9a4e3f31a27d2d2fbf6e435.1597243100.git.alistair.francis@wdc.com> In-Reply-To: <cover.1597243100.git.alistair.francis@wdc.com> References: <cover.1597243100.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: macro@wdc.com, 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) \| [v4,00/18] glibc port for 32-bit RISC-V (RV32) [v4,01/18] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64 [v4,02/18] RISC-V: Cleanup some of the sysdep.h code [v4,03/18] RISC-V: Use 64-bit-time syscall numbers with the 32-bit port [v4,04/18] RISC-V: Add support for 32-bit vDSO calls [v4,05/18] RISC-V: Support dynamic loader for the 32-bit [v4,07/18] sysv/linux: riscv: Fix dl-cache.h indentation [v4,08/18] RISC-V: Add arch-syscall.h for RV32 [v4,09/18] RISC-V: Support the 32-bit ABI implementation [v4,10/18] RISC-V: Hard float support for 32-bit [v4,11/18] RISC-V: Add 32-bit ABI lists [v4,12/18] RISC-V: Add the RV32 libm-test-ulps [v4,13/18] RISC-V: Fix llrint and llround missing exceptions on RV32 [v4,14/18] riscv32: Specify the arch_minimum_kernel as 5.4 [v4,16/18] RISC-V: Add rv32 path to RTLDLIST in ldd [v4,17/18] Documentation for the RISC-V 32-bit port [v4,18/18] Add RISC-V 32-bit target to build-many-glibcs.py

Commit Message

Alistair Francis Aug. 12, 2020, 2:41 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 Aug. 18, 2020, 2:37 p.m. UTC | #1

Hi Alistair,

 This is OK, except that I missed the change heading, which needs to use 
the imperative mood.  Sorry about that.  How about:

RISC-V: Add hard float support for 32-bit CPUs

(fixing the grammar a little while at it too)?

  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..78bccd47ae
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvd/s_lround.c
@@ -0,0 +1,31 @@ 
+/* lround().  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
+__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..b8e1df439e
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lrintf.c
@@ -0,0 +1,31 @@ 
+/* lrintf().  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-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..32f9925084
--- /dev/null
+++ b/sysdeps/riscv/rv32/rvf/s_lroundf.c
@@ -0,0 +1,31 @@ 
+/* lroundf().  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-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)