diff options
Diffstat (limited to 'sysdeps/ia64/fpu/feenablxcpt.c')
-rw-r--r-- | sysdeps/ia64/fpu/feenablxcpt.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/feenablxcpt.c b/sysdeps/ia64/fpu/feenablxcpt.c new file mode 100644 index 0000000000..2c54476681 --- /dev/null +++ b/sysdeps/ia64/fpu/feenablxcpt.c @@ -0,0 +1,38 @@ +/* Enable floating-point exceptions. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 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 +feenableexcept (int excepts) +{ + fenv_t old_fpsr; + fenv_t new_fpsr; + + /* Get the current fpsr. */ + __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r " (old_fpsr)); + + new_fpsr = ((old_fpsr & FE_ALL_EXCEPT) + | (old_fpsr & ((unsigned long int) excepts ^ FE_ALL_EXCEPT))); + + __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory"); + + return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT; +} |