[Xen-changelog] [xen-3.1-testing] x86_emulate: Fix MUL emulation.

["Xen patchbot-3.1-testing" <patchbot-3.1-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1203344471 0
# Node ID 2acc0adcf6e7b41af3ad2bc3e47e8748b13f153e
# Parent  5ce512d4d33806d5f5602f8c4026ede17bba0bb2
x86_emulate: Fix MUL emulation.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset:   16995:445edf4089a3ccaca977665423e903b5300832cb
xen-unstable date:        Thu Feb 07 18:00:44 2008 +0000
---
 xen/arch/x86/x86_emulate.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -r 5ce512d4d338 -r 2acc0adcf6e7 xen/arch/x86/x86_emulate.c
--- a/xen/arch/x86/x86_emulate.c        Mon Feb 18 14:20:50 2008 +0000
+++ b/xen/arch/x86/x86_emulate.c        Mon Feb 18 14:21:11 2008 +0000
@@ -1383,11 +1383,14 @@ x86_emulate(
             switch ( src.bytes )
             {
             case 1:
+                dst.val = (uint8_t)dst.val;
                 dst.val *= src.val;
                 if ( (uint8_t)dst.val != (uint16_t)dst.val )
                     _regs.eflags |= EFLG_OF|EFLG_CF;
+                dst.bytes = 2;
                 break;
             case 2:
+                dst.val = (uint16_t)dst.val;
                 dst.val *= src.val;
                 if ( (uint16_t)dst.val != (uint32_t)dst.val )
                     _regs.eflags |= EFLG_OF|EFLG_CF;
@@ -1395,6 +1398,7 @@ x86_emulate(
                 break;
 #ifdef __x86_64__
             case 4:
+                dst.val = (uint32_t)dst.val;
                 dst.val *= src.val;
                 if ( (uint32_t)dst.val != dst.val )
                     _regs.eflags |= EFLG_OF|EFLG_CF;

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