diff options
Diffstat (limited to 'sysdeps/hppa/fpu/feholdexcpt.c')
-rw-r--r-- | sysdeps/hppa/fpu/feholdexcpt.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/hppa/fpu/feholdexcpt.c b/sysdeps/hppa/fpu/feholdexcpt.c new file mode 100644 index 0000000..5aec015 --- /dev/null +++ b/sysdeps/hppa/fpu/feholdexcpt.c @@ -0,0 +1,56 @@ +/* Store current floating-point environment and clear 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 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 <string.h> + +int +feholdexcept (fenv_t *envp) +{ + fenv_t clear; + fenv_t * _regs = envp; + + /* Store the environment. */ + __asm__ ( + "fstd,ma %%fr0,8(%1)\n" + "fstd,ma %%fr1,8(%1)\n" + "fstd,ma %%fr2,8(%1)\n" + "fstd %%fr3,0(%1)\n" + : "=m" (*_regs), "+r" (_regs)); + memcpy (&clear, envp, sizeof (clear)); + + /* Now clear all exceptions. */ + clear.__status_word &= ~(FE_ALL_EXCEPT << 27); + memset (clear.__exception, 0, sizeof (clear.__exception)); + + /* And set all exceptions to non-stop. */ + clear.__status_word &= ~FE_ALL_EXCEPT; + + /* Load the new environment. */ + _regs = &clear; + __asm__ ( + "fldd,ma 8(%0),%%fr0\n" + "fldd,ma 8(%0),%%fr1\n" + "fldd,ma 8(%0),%%fr2\n" + "fldd 0(%0),%%fr3\n" + : : "r" (_regs)); + + return 0; +} |