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Diffstat (limited to 'sysdeps/i386/fpu/fedisblxcpt.c')
-rw-r--r--sysdeps/i386/fpu/fedisblxcpt.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/fedisblxcpt.c b/sysdeps/i386/fpu/fedisblxcpt.c
index c7f76f5..754d20d 100644
--- a/sysdeps/i386/fpu/fedisblxcpt.c
+++ b/sysdeps/i386/fpu/fedisblxcpt.c
@@ -1,5 +1,5 @@
/* Disable floating-point exceptions.
- Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999.
@@ -19,6 +19,9 @@
02111-1307 USA. */
#include <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
int
fedisableexcept (int excepts)
@@ -35,5 +38,18 @@ fedisableexcept (int excepts)
new_exc |= excepts;
__asm__ ("fldcw %0" : : "m" (*&new_exc));
+ /* If the CPU supports SSE we set the MXCSR as well. */
+ if ((GL(dl_hwcap_mask) & HWCAP_I386_XMM) != 0)
+ {
+ unsigned int xnew_exc;
+
+ /* Get the current control word. */
+ __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+ xnew_exc |= excepts;
+
+ __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+ }
+
return old_exc;
}