diff options
Diffstat (limited to 'main/libc0.9.32/0005-libm-x86_64-implement-some-fenv-functions.patch')
| -rw-r--r-- | main/libc0.9.32/0005-libm-x86_64-implement-some-fenv-functions.patch | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/main/libc0.9.32/0005-libm-x86_64-implement-some-fenv-functions.patch b/main/libc0.9.32/0005-libm-x86_64-implement-some-fenv-functions.patch new file mode 100644 index 000000000..9a47267b8 --- /dev/null +++ b/main/libc0.9.32/0005-libm-x86_64-implement-some-fenv-functions.patch @@ -0,0 +1,288 @@ +From 6864dfeef979985f9f173b842034183476b95583 Mon Sep 17 00:00:00 2001 +From: Natanael Copa <natanael.copa@gmail.com> +Date: Sun, 28 Nov 2010 12:43:33 +0000 +Subject: [PATCH] libm/x86_64: implement some fenv functions + +from glibc + +Posted to uclibc: +http://lists.busybox.net/pipermail/uclibc/2010-December/044523.html + +Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> +--- + libm/x86_64/Makefile.arch | 24 ++++++++++++++++++++ + libm/x86_64/fclrexcpt.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ + libm/x86_64/fegetexcept.c | 32 +++++++++++++++++++++++++++ + libm/x86_64/fesetround.c | 46 ++++++++++++++++++++++++++++++++++++++ + libm/x86_64/fgetexcptflg.c | 36 ++++++++++++++++++++++++++++++ + libm/x86_64/ftestexcept.c | 33 +++++++++++++++++++++++++++ + 6 files changed, 223 insertions(+), 0 deletions(-) + create mode 100644 libm/x86_64/Makefile.arch + create mode 100644 libm/x86_64/fclrexcpt.c + create mode 100644 libm/x86_64/fegetexcept.c + create mode 100644 libm/x86_64/fesetround.c + create mode 100644 libm/x86_64/fgetexcptflg.c + create mode 100644 libm/x86_64/ftestexcept.c + +diff --git a/libm/x86_64/Makefile.arch b/libm/x86_64/Makefile.arch +new file mode 100644 +index 0000000..e1be961 +--- /dev/null ++++ b/libm/x86_64/Makefile.arch +@@ -0,0 +1,24 @@ ++# Makefile for uClibc ++# ++# Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org> ++# ++# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. ++# ++# The routines included in this math library are derived from ++# glibc's libm. ++# ++ ++ifeq ($(UCLIBC_HAS_FENV),y) ++libm_ARCH_SRC:=$(wildcard $(libm_ARCH_DIR)/*.c) ++libm_ARCH_OBJ:=$(patsubst $(libm_ARCH_DIR)/%.c,$(libm_ARCH_OUT)/%.o,$(libm_ARCH_SRC)) ++endif ++ ++libm_ARCH_OBJS:=$(libm_ARCH_OBJ) ++ ++ifeq ($(DOPIC),y) ++libm-a-y+=$(libm_ARCH_OBJS:.o=.os) ++else ++libm-a-y+=$(libm_ARCH_OBJS) ++endif ++libm-so-y+=$(libm_ARCH_OBJS:.o=.os) ++ +diff --git a/libm/x86_64/fclrexcpt.c b/libm/x86_64/fclrexcpt.c +new file mode 100644 +index 0000000..4fc3bfb +--- /dev/null ++++ b/libm/x86_64/fclrexcpt.c +@@ -0,0 +1,52 @@ ++/* Clear given exceptions in current floating-point environment. ++ Copyright (C) 2001 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, write to the Free ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ++ 02111-1307 USA. */ ++ ++#include <fenv.h> ++ ++int ++feclearexcept (int excepts) ++{ ++ fenv_t temp; ++ unsigned int mxcsr; ++ ++ /* Mask out unsupported bits/exceptions. */ ++ excepts &= FE_ALL_EXCEPT; ++ ++ /* Bah, we have to clear selected exceptions. Since there is no ++ `fldsw' instruction we have to do it the hard way. */ ++ __asm__ ("fnstenv %0" : "=m" (*&temp)); ++ ++ /* Clear the relevant bits. */ ++ temp.__status_word &= excepts ^ FE_ALL_EXCEPT; ++ ++ /* Put the new data in effect. */ ++ __asm__ ("fldenv %0" : : "m" (*&temp)); ++ ++ /* And the same procedure for SSE. */ ++ __asm__ ("stmxcsr %0" : "=m" (*&mxcsr)); ++ ++ /* Clear the relevant bits. */ ++ mxcsr &= ~excepts; ++ ++ /* And put them into effect. */ ++ __asm__ ("ldmxcsr %0" : : "m" (*&mxcsr)); ++ ++ /* Success. */ ++ return 0; ++} +diff --git a/libm/x86_64/fegetexcept.c b/libm/x86_64/fegetexcept.c +new file mode 100644 +index 0000000..04df4b6 +--- /dev/null ++++ b/libm/x86_64/fegetexcept.c +@@ -0,0 +1,32 @@ ++/* Get enabled floating-point exceptions. ++ Copyright (C) 2001 Free Software Foundation, Inc. ++ This file is part of the GNU C Library. ++ Contributed by Andreas Jaeger <aj@suse.de>, 2001. ++ ++ 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, write to the Free ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ++ 02111-1307 USA. */ ++ ++#include <fenv.h> ++ ++int ++fegetexcept (void) ++{ ++ unsigned short int exc; ++ ++ /* Get the current control word. */ ++ __asm__ ("fstcw %0" : "=m" (*&exc)); ++ ++ return (~exc) & FE_ALL_EXCEPT; ++} +diff --git a/libm/x86_64/fesetround.c b/libm/x86_64/fesetround.c +new file mode 100644 +index 0000000..3d2ef4c +--- /dev/null ++++ b/libm/x86_64/fesetround.c +@@ -0,0 +1,46 @@ ++/* Set current rounding direction. ++ Copyright (C) 2001, 2005 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, write to the Free ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ++ 02111-1307 USA. */ ++ ++#include <fenv.h> ++ ++int ++fesetround (int round) ++{ ++ unsigned short int cw; ++ int mxcsr; ++ ++ if ((round & ~0xc00) != 0) ++ /* ROUND is no valid rounding mode. */ ++ return 1; ++ ++ /* First set the x87 FPU. */ ++ __asm__ ("fnstcw %0" : "=m" (*&cw)); ++ cw &= ~0xc00; ++ cw |= round; ++ __asm__ ("fldcw %0" : : "m" (*&cw)); ++ ++ /* And now the MSCSR register for SSE, the precision is at different bit ++ positions in the different units, we need to shift it 3 bits. */ ++ __asm__ ("stmxcsr %0" : "=m" (*&mxcsr)); ++ mxcsr &= ~ 0x6000; ++ mxcsr |= round << 3; ++ __asm__ ("ldmxcsr %0" : : "m" (*&mxcsr)); ++ ++ return 0; ++} +diff --git a/libm/x86_64/fgetexcptflg.c b/libm/x86_64/fgetexcptflg.c +new file mode 100644 +index 0000000..f0681dc +--- /dev/null ++++ b/libm/x86_64/fgetexcptflg.c +@@ -0,0 +1,36 @@ ++/* Store current representation for exceptions. ++ Copyright (C) 2001 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, write to the Free ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ++ 02111-1307 USA. */ ++ ++#include <fenv.h> ++ ++int ++fegetexceptflag (fexcept_t *flagp, int excepts) ++{ ++ fexcept_t temp; ++ unsigned int mxscr; ++ ++ /* Get the current exceptions for the x87 FPU and SSE unit. */ ++ __asm__ ("fnstsw %0\n" ++ "stmxcsr %1" : "=m" (*&temp), "=m" (*&mxscr)); ++ ++ *flagp = (temp | mxscr) & FE_ALL_EXCEPT & excepts; ++ ++ /* Success. */ ++ return 0; ++} +diff --git a/libm/x86_64/ftestexcept.c b/libm/x86_64/ftestexcept.c +new file mode 100644 +index 0000000..091c251 +--- /dev/null ++++ b/libm/x86_64/ftestexcept.c +@@ -0,0 +1,33 @@ ++/* Test exception in current environment. ++ Copyright (C) 2001 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, write to the Free ++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ++ 02111-1307 USA. */ ++ ++#include <fenv.h> ++ ++int ++fetestexcept (int excepts) ++{ ++ int temp; ++ unsigned int mxscr; ++ ++ /* Get current exceptions. */ ++ __asm__ ("fnstsw %0\n" ++ "stmxcsr %1" : "=m" (*&temp), "=m" (*&mxscr)); ++ ++ return (temp | mxscr) & excepts & FE_ALL_EXCEPT; ++} +-- +1.7.8 + |