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| 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_control.h | |
| 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_control.h')
| -rw-r--r-- | sysdeps/i386/fpu_control.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/i386/fpu_control.h b/sysdeps/i386/fpu_control.h index ed9bf388a8..e2d00467b7 100644 --- a/sysdeps/i386/fpu_control.h +++ b/sysdeps/i386/fpu_control.h @@ -1,5 +1,5 @@ /* FPU control word bits. i387 version. - Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc. + Copyright (C) 1993,1995-1998,2000,2001,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Olaf Flebbe. @@ -88,7 +88,11 @@ /* Type of the control word. */ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__))); -/* Macros for accessing the hardware control word. */ +/* Macros for accessing the hardware control word. + + Note that the use of these macros is no sufficient anymore with + recent hardware. Some floating point operations are executed in + the SSE/SSE2 engines which have their own control and status register. */ #define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw)) #define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw)) |