diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/fesetmode.c')
-rw-r--r-- | sysdeps/x86_64/fpu/fesetmode.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/sysdeps/x86_64/fpu/fesetmode.c b/sysdeps/x86_64/fpu/fesetmode.c deleted file mode 100644 index 27429f7887..0000000000 --- a/sysdeps/x86_64/fpu/fesetmode.c +++ /dev/null @@ -1,50 +0,0 @@ -/* Install given floating-point control modes. x86_64 version. - Copyright (C) 2016-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#include <fenv.h> -#include <fpu_control.h> - -/* All exceptions, including the x86-specific "denormal operand" - exception. */ -#define FE_ALL_EXCEPT_X86 (FE_ALL_EXCEPT | __FE_DENORM) - -int -fesetmode (const femode_t *modep) -{ - fpu_control_t cw; - unsigned int mxcsr; - __asm__ ("stmxcsr %0" : "=m" (mxcsr)); - /* Preserve SSE exception flags but restore other state in - MXCSR. */ - mxcsr &= FE_ALL_EXCEPT_X86; - if (modep == FE_DFL_MODE) - { - cw = _FPU_DEFAULT; - /* Default MXCSR state has all bits zero except for those - masking exceptions. */ - mxcsr |= FE_ALL_EXCEPT_X86 << 7; - } - else - { - cw = modep->__control_word; - mxcsr |= modep->__mxcsr & ~FE_ALL_EXCEPT_X86; - } - _FPU_SETCW (cw); - __asm__ ("ldmxcsr %0" : : "m" (mxcsr)); - return 0; -} |