diff options
Diffstat (limited to 'sysdeps/m68k/fpu/feholdexcpt.c')
-rw-r--r-- | sysdeps/m68k/fpu/feholdexcpt.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/feholdexcpt.c b/sysdeps/m68k/fpu/feholdexcpt.c new file mode 100644 index 0000000000..351fa8ae75 --- /dev/null +++ b/sysdeps/m68k/fpu/feholdexcpt.c @@ -0,0 +1,39 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> + + 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 +feholdexcept (fenv_t *envp) +{ + fexcept_t fpcr, fpsr; + + /* Store the environment. */ + __asm__ ("fmovem%.l %/fpcr/%/fpsr,%0" : "=m" (*envp)); + + /* Now clear all exceptions. */ + fpsr = envp->status_register & ~FE_ALL_EXCEPT; + __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr)); + /* And set all exceptions to non-stop. */ + fpcr = envp->control_register & ~(FE_ALL_EXCEPT << 5); + __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr)); + + return 1; +} |