Displaying 1 result from an estimated 1 matches for "twobyte".
Did you mean:
tobyte
2007 Feb 15
0
[PATCH] x86 emulation: suppress rep prefix handling on non-repeatable instructions
...en/arch/x86/x86_emulate.c
===================================================================
--- 2007-02-07.orig/xen/arch/x86/x86_emulate.c 2007-02-08 08:46:39.000000000 +0100
+++ 2007-02-07/xen/arch/x86/x86_emulate.c 2007-02-08 09:32:00.000000000 +0100
@@ -1579,7 +1579,9 @@ x86_emulate(
if ( twobyte )
goto twobyte_special_insn;
- if ( rep_prefix )
+ if ( rep_prefix &&
+ (((b & ~0xf) == 0xa0 && ((0xfcf0 >> (b & 0xf)) & 1)) ||
+ (b & ~3) == 0x6c) )
{
if ( _regs.ecx == 0 )
{
__________________________...