35d8090d78
gcc: * config/alpha/crtfastmath.c: Move to ../libgcc/config/alpha. * config/alpha/t-crtfm: Remove. * config/i386/crtfastmath.c: Move to ../libgcc/config/i386. * config/i386/t-crtfm: Remove. * config/ia64/crtfastmath.c: Move to ../libgcc/config/ia64. * config/mips/crtfastmath.c: Move to ../libgcc/config/mips. * config/sparc/crtfastmath.c: Move to ../libgcc/config/sparc. * config/sparc/t-crtfm: Remove. * config.gcc (alpha*-*-linux*): Remove alpha/t-crtfm from tmake_file. (alpha*-*-freebsd*): Likewise. (i[34567]86-*-darwin*): Remove i386/t-crtfm from tmake_file. (x86_64-*-darwin*): Likewise. (i[34567]86-*-linux*): Likewise. (x86_64-*-linux*): Likewise. (x86_64-*-mingw*): Likewise. (ia64*-*-elf*): Remove crtfastmath.o from extra_parts. (ia64*-*-freebsd*): Likewise. (ia64*-*-linux*): Likewise. (mips64*-*-linux*): Likewise. (mips*-*-linux*): Likewise. (sparc-*-linux*): Remove sparc/t-crtfm from tmake_file. (sparc64-*-linux*): Likewise. (sparc64-*-freebsd*): Likewise. libgcc: * config/alpha/crtfastmath.c: New file. * config/i386/crtfastmath.c: New file. * config/ia64/crtfastmath.c: New file. * config/mips/crtfastmath.c: New file. * config/sparc/crtfastmath.c: New file. * config/t-crtfm (crtfastmath.o): Use $(srcdir) to refer to crtfastmath.c. Add -frandom-seed=gcc-crtfastmath. * config/alpha/t-crtfm: Remove. * config/i386/t-crtfm: Use $(srcdir) to refer to crtfastmath.c. * config/ia64/t-ia64 (crtfastmath.o): Remove. * config.host (alpha*-*-linux*): Replace alpha/t-crtfm by t-crtfm. (alpha*-dec-osf5.1*): Likewise. (alpha*-*-freebsd*): Add t-crtfm to tmake_file. Add crtfastmath.o to extra_parts. (i[34567]86-*-darwin*): Add i386/t-crtfm to tmake_file. Add crtfastmath.o to extra_parts. (x86_64-*-darwin*): Likewise. (x86_64-*-mingw*): Likewise. (ia64*-*-elf*): Add t-crtfm to tmake_file. (ia64*-*-freebsd*): Likewise. (ia64*-*-linux*): Likewise. (sparc64-*-freebsd*): Add t-crtfm to tmake_file. Add crtfastmath.o to extra_parts. From-SVN: r176241
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright (C) 2010 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License
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and a copy of the GCC Runtime Library Exception along with this
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program; see the files COPYING3 and COPYING.RUNTIME respectively.
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If not, see <http://www.gnu.org/licenses/>. */
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#ifdef __mips_hard_float
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/* Flush denormalized numbers to zero. */
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#define _FPU_FLUSH_TZ 0x1000000
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/* Rounding control. */
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#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
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#define _FPU_RC_ZERO 0x1
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#define _FPU_RC_UP 0x2
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#define _FPU_RC_DOWN 0x3
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/* Enable interrupts for IEEE exceptions. */
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#define _FPU_IEEE 0x00000F80
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/* Macros for accessing the hardware control word. */
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#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw))
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#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw))
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static void __attribute__((constructor))
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set_fast_math (void)
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{
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unsigned int fcr;
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/* Flush to zero, round to nearest, IEEE exceptions disabled. */
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fcr = _FPU_FLUSH_TZ | _FPU_RC_NEAREST;
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_FPU_SETCW(fcr);
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}
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#endif /* __mips_hard_float */
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