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| author | Ulrich Drepper <drepper@redhat.com> | 2003-04-29 07:18:57 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-04-29 07:18:57 +0000 |
| commit | e40468fa25851309afbc469735897fae83eb893d (patch) | |
| tree | 0d37d3e92dbcd7195580669f1485b691b65aeb9c /sysdeps/i386/fpu/feholdexcpt.c | |
| parent | b65b0900861221855ea784cf959bbecfc2611acc (diff) | |
| download | glibc-e40468fa25851309afbc469735897fae83eb893d.tar.gz glibc-e40468fa25851309afbc469735897fae83eb893d.tar.xz glibc-e40468fa25851309afbc469735897fae83eb893d.zip | |
Update.
2003-04-29 Ulrich Drepper <drepper@redhat.com> * sysdeps/i386/fpu/Makefile: New file. * sysdeps/i386/fpu/fedisblxcpt.c: Also set SSE control word. * sysdeps/i386/fpu/feenablxcpt.c: Likewise. * sysdeps/i386/fpu/feholdexcpt.c: Likewise. * sysdeps/i386/fpu/fesetround.c: Also set SSE rounding mode [PR libc/4987].
Diffstat (limited to 'sysdeps/i386/fpu/feholdexcpt.c')
| -rw-r--r-- | sysdeps/i386/fpu/feholdexcpt.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/feholdexcpt.c b/sysdeps/i386/fpu/feholdexcpt.c index b68ffa3244..bdbf9107e6 100644 --- a/sysdeps/i386/fpu/feholdexcpt.c +++ b/sysdeps/i386/fpu/feholdexcpt.c @@ -1,5 +1,5 @@ /* Store current floating-point environment and clear exceptions. - Copyright (C) 1997, 1999 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -19,6 +19,9 @@ 02111-1307 USA. */ #include <fenv.h> +#include <unistd.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> int feholdexcept (fenv_t *envp) @@ -32,5 +35,19 @@ feholdexcept (fenv_t *envp) work = envp->__control_word | 0x3f; __asm__ ("fldcw %0" : : "m" (*&work)); + /* If the CPU supports SSE we set the MXCSR as well. */ + if ((GL(dl_hwcap_mask) & HWCAP_I386_XMM) != 0) + { + unsigned int xwork; + + /* Get the current control word. */ + __asm__ ("stmxcsr %0" : "=m" (*&xwork)); + + /* Set all exceptions to non-stop. */ + work |= 0x1f80; + + __asm__ ("ldmxcsr %0" : : "m" (*&xwork)); + } + return 0; } |