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author | Ulrich Drepper <drepper@redhat.com> | 2007-04-16 20:15:57 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2007-04-16 20:15:57 +0000 |
commit | a8c79c4088e8c04e4297936efa0dee6c8e6e974d (patch) | |
tree | eff01fb1edcb8dbd7a3b40feeffc2137a5a9a00a /sysdeps/x86_64/fpu/feupdateenv.c | |
parent | 34317254127a027848079aabdd17efa1deb9279f (diff) | |
download | glibc-a8c79c4088e8c04e4297936efa0dee6c8e6e974d.tar.gz |
[BZ #3427]
2007-03-22 Jakub Jelinek <jakub@redhat.com>
[BZ #3427]
* sysdeps/x86_64/fpu/feholdexcpt.c (feholdexcept): Clear all
exceptions both in SW and MXCSR.
* sysdeps/x86_64/fpu/feupdateenv.c: New file.
* sysdeps/x86_64/fpu/feenablxcpt.c (feenableexcept): Remove dead code.
* sysdeps/x86_64/fpu/fedisblxcpt.c (fedisableexcept): Likewise.
* sysdeps/i386/fpu/feholdexcpt.c (feholdexcept): Clear all exceptions
in MXCSR if SSE is available.
* sysdeps/i386/fpu/feupdateenv.c: Include unistd.h, dl-procinfo.h
and ldsodefs.h.
(__feupdateenv): Query exceptions also from MXCSR if SSE is available.
Fix comment typo.
* sysdeps/ia64/fpu/feholdexcpt.c (feholdexcept): Clear all exceptions.
Return 0 rather than 1.
* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Fix comment typo.
Remove incorrect part of a comment. Fix argument to feraiseexcept.
* math/test-fenv.c (feholdexcept_tests): New function.
(main): Call it.
2007-01-05 Richard B. Kreckel <kreckel@ginac.de>
[BZ #3427]
* sysdeps/i386/fpu/feholdexcpt.c (feholdexcept): Clear all exceptions
in SW.
Diffstat (limited to 'sysdeps/x86_64/fpu/feupdateenv.c')
-rw-r--r-- | sysdeps/x86_64/fpu/feupdateenv.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/feupdateenv.c b/sysdeps/x86_64/fpu/feupdateenv.c new file mode 100644 index 0000000000..e23f1affa6 --- /dev/null +++ b/sysdeps/x86_64/fpu/feupdateenv.c @@ -0,0 +1,51 @@ +/* Install given floating-point environment and raise exceptions. + Copyright (C) 1997,99,2000,01,07 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> + +int +__feupdateenv (const fenv_t *envp) +{ + fexcept_t temp; + unsigned int xtemp; + + /* Save current exceptions. */ + __asm__ ("fnstsw %0\n\tstmxcsr %1" : "=m" (*&temp), "=m" (xtemp)); + temp = (temp | xtemp) & FE_ALL_EXCEPT; + + /* Install new environment. */ + fesetenv (envp); + + /* Raise the saved exception. Incidently for us the implementation + defined format of the values in objects of type fexcept_t is the + same as the ones specified using the FE_* constants. */ + feraiseexcept ((int) temp); + + /* Success. */ + return 0; +} + +#include <shlib-compat.h> +#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) +strong_alias (__feupdateenv, __old_feupdateenv) +compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1); +#endif + +versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2); |