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Linux/HPPA specific fedisableexcept implementation.

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This commit is contained in:
Ulrich Drepper 2000-10-15 03:34:04 +00:00
parent e7cbd45172
commit 8ebd5d830b
1 changed files with 37 additions and 0 deletions
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37
sysdeps/hppa/fpu/fedisblxcpt.c Normal file
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/* Disable floating-point exceptions.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Huggins-Daines <dhd@debian.org>, 2000
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv.h>
int
fedisableexcept (int excepts)
{
unsigned int sw[2], old_exc;
/* Get the current status word. */
__asm__ ("fstd %%fr0,0(%1)" : "=m" (*sw) : "r" (sw));
old_exc = sw[0] & FE_ALL_EXCEPT;
sw[0] &= ~(excepts & FE_ALL_EXCEPT);
__asm__ ("fldd 0(%0),%%fr0" : : "r" (sw));
return old_exc;
}