mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 17:11:06 +00:00
2417696712
2003-05-19 Ed Connell <ed.connell@sas.com> * sysdeps/unix/sysv/linux/i386/getcontext.S (getcontext): Retain floating point mask. * sysdeps/i386/fpu/fegetenv.c (fegetenv): Likewise.
44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/* Store current floating-point environment.
|
|
Copyright (C) 1997,1999,2000,2001,2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <fenv.h>
|
|
#include <bp-sym.h>
|
|
|
|
int
|
|
__fegetenv (fenv_t *envp)
|
|
{
|
|
__asm__ ("fnstenv %0" : "=m" (*envp));
|
|
/* And load it right back since the processor changes the mask.
|
|
Intel thought this opcode to be used in interrupt handlers which
|
|
would block all exceptions. */
|
|
__asm__ ("fldenv %0" : : "m" (*envp));
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|
|
|
|
#include <shlib-compat.h>
|
|
#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
|
|
strong_alias (__fegetenv, __old_fegetenv)
|
|
compat_symbol (libm, BP_SYM (__old_fegetenv), BP_SYM (fegetenv), GLIBC_2_1);
|
|
#endif
|
|
|
|
versioned_symbol (libm, BP_SYM (__fegetenv), BP_SYM (fegetenv), GLIBC_2_2);
|