54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright (C) 2010-2015 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 <http://www.gnu.org/licenses/>. */
|
|
|
|
#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,nomips16))
|
|
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 */
|