diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2003-07-22 22:28:07 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-07-22 22:28:07 +0000 |
| commit | 11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8 (patch) | |
| tree | 0f78f99928ebbe5b7abe4619e33eb04fbc95d841 /sysdeps/i386/fpu/fclrexcpt.c | |
| parent | f00b19417df4f29fc3264f772c46305f60181cd6 (diff) | |
| download | glibc-11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8.tar.gz glibc-11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8.tar.xz glibc-11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8.zip | |
Update.
2003-07-22 H.J. Lu <hongjiu.lu@intel.com> * elf/dl-support.c (_dl_hwcap): New variable. (_dl_aux_init): Initialize GL(dl_hwcap) for static binaries. * sysdeps/i386/fpu/fclrexcpt.c: Include <unistd.h>, <ldsodefs.h> and <dl-procinfo.h>. (__feclearexcept): Clear MXCSR if needed. * sysdeps/i386/fpu/fsetexcptflg.c: Likewise. * sysdeps/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): Document that newer hardware needs more than these macros. * sysdeps/i386/setfpucw.c: New file. 2003-07-22 Jakub Jelinek <jakub@redhat.com> * elf/Makefile (CFLAGS-ldconfig.c): Define IS_IN_ldconfig. * elf/ldconfig.c: Include dl-procinfo.c. (PROCINFO_CLASS): Define. * sysdeps/generic/ldsodefs.h (PROCINFO_CLASS): Define. * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: New file. * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: New file. * sysdeps/unix/sysv/linux/i386/dl-procinfo.c (PROCINFO_CLASS): Define if not yet defined. Use it instead of EXTERN. Undefine at the end of the file. * sysdeps/unix/sysv/linux/arm/dl-procinfo.c (PROCINFO_CLASS): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c (PROCINFO_CLASS): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c (PROCINFO_CLASS): Likewise. 2003-07-22 H.J. Lu <hongjiu.lu@intel.com> * elf/ldconfig.c (main): Issue a fatal error if relative path is used to build cache. 2003-07-22 Ulrich Drepper <drepper@redhat.com> * elf/readlib.c (process_file): Avoid possible overflow in assignment.
Diffstat (limited to 'sysdeps/i386/fpu/fclrexcpt.c')
| -rw-r--r-- | sysdeps/i386/fpu/fclrexcpt.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/fclrexcpt.c b/sysdeps/i386/fpu/fclrexcpt.c index c3e7c3ed48..f7ccd3acf6 100644 --- a/sysdeps/i386/fpu/fclrexcpt.c +++ b/sysdeps/i386/fpu/fclrexcpt.c @@ -19,6 +19,9 @@ 02111-1307 USA. */ #include <fenv.h> +#include <unistd.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> int __feclearexcept (int excepts) @@ -38,6 +41,21 @@ __feclearexcept (int excepts) /* Put the new data in effect. */ __asm__ ("fldenv %0" : : "m" (*&temp)); + /* If the CPU supports SSE, we clear the MXCSR as well. */ + if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0) + { + unsigned int xnew_exc; + + /* Get the current MXCSR. */ + __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc)); + + /* Clear the relevant bits. */ + xnew_exc &= excepts ^ FE_ALL_EXCEPT; + + /* Put the new data in effect. */ + __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc)); + } + /* Success. */ return 0; } |