From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/config/mips/crtfastmath.c | 53 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 gcc/config/mips/crtfastmath.c (limited to 'gcc/config/mips/crtfastmath.c') diff --git a/gcc/config/mips/crtfastmath.c b/gcc/config/mips/crtfastmath.c new file mode 100644 index 000000000..a9586b0a7 --- /dev/null +++ b/gcc/config/mips/crtfastmath.c @@ -0,0 +1,53 @@ +/* Copyright (C) 2010 Free Software Foundation, Inc. + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + GCC 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 General Public + License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License + and a copy of the GCC Runtime Library Exception along with this + program; see the files COPYING3 and COPYING.RUNTIME respectively. + If not, see . */ + +#ifdef __mips_hard_float + +/* Flush denormalized numbers to zero. */ +#define _FPU_FLUSH_TZ 0x1000000 + +/* Rounding control. */ +#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */ +#define _FPU_RC_ZERO 0x1 +#define _FPU_RC_UP 0x2 +#define _FPU_RC_DOWN 0x3 + +/* Enable interrupts for IEEE exceptions. */ +#define _FPU_IEEE 0x00000F80 + +/* Macros for accessing the hardware control word. */ +#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw)) +#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw)) + +static void __attribute__((constructor)) +set_fast_math (void) +{ + unsigned int fcr; + + /* Flush to zero, round to nearest, IEEE exceptions disabled. */ + fcr = _FPU_FLUSH_TZ | _FPU_RC_NEAREST; + + _FPU_SETCW(fcr); +} + +#endif /* __mips_hard_float */ -- cgit v1.2.3