[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.

1 files changed, 2 insertions, 4 deletions

diff --git a/sysdeps/x86_64/fpu/fedisblxcpt.c b/sysdeps/x86_64/fpu/fedisblxcpt.c
index e8157da126..261c1e877c 100644
--- a/sysdeps/x86_64/fpu/fedisblxcpt.c
+++ b/sysdeps/x86_64/fpu/fedisblxcpt.c
@@ -1,5 +1,5 @@
 /* Disable floating-point exceptions.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Andreas Jaeger <aj@suse.de>, 2001.
 
@@ -24,7 +24,7 @@ int
 fedisableexcept (int excepts)
 {
   unsigned short int new_exc, old_exc;
-  unsigned int new, old;
+  unsigned int new;
 
   excepts &= FE_ALL_EXCEPT;
 
@@ -40,8 +40,6 @@ fedisableexcept (int excepts)
   __asm__ ("stmxcsr %0" : "=m" (*&new));
 
   /* The SSE exception masks are shifted by 7 bits.  */
-  old = (~new) & (FE_ALL_EXCEPT << 7);
-
   new |= excepts << 7;
   __asm__ ("ldmxcsr %0" : : "m" (*&new));