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Source: http://sourceware.org/ml/libc-alpha/2008-01/msg00017.html
I am checking this x86 assembler patch:
http://sourceware.org/ml/binutils/2008-01/msg00148.html
to check operand size. fnstsw stores 16bit into %ax. The upper
16bit of %eax is unchanged. The new assembler will disallow
"fnstsw %eax". Here is a patch for glibc.
H.J.
---
sysdeps/i386/fpu/ftestexcept.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c
===================================================================
--- glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c 2008-07-19 11:00:45.000000000 -0700
+++ glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c 2008-07-19 11:01:25.000000000 -0700
@@ -26,7 +26,7 @@
int
fetestexcept (int excepts)
{
- int temp;
+ short temp;
int xtemp = 0;
/* Get current exceptions. */
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