37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2014-2019 Free Software Foundation, Inc.
|
|
*
|
|
* This file 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.
|
|
*
|
|
* This file 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/>.
|
|
*/
|
|
|
|
#define _FPU_FPCR_FZ 0x1000000
|
|
|
|
#define _FPU_SETCW(fpcr) \
|
|
{ \
|
|
__asm__ __volatile__ ("msr fpcr, %0" : : "r" (fpcr)); \
|
|
}
|
|
|
|
static void __attribute__((constructor))
|
|
set_fast_math (void)
|
|
{
|
|
/* Flush to zero, round to nearest, IEEE exceptions disabled. */
|
|
_FPU_SETCW (_FPU_FPCR_FZ);
|
|
}
|