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[Xen-changelog] [xen-unstable] x86: Fix emulation of DIV instruction. Ne

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Subject:	[Xen-changelog] [xen-unstable] x86: Fix emulation of DIV instruction. Never actually used currently,
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Thu, 11 Oct 2007 20:30:10 -0700
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# HG changeset patch
# User Keir Fraser <keir@xxxxxxxxxxxxx>
# Date 1192126692 -3600
# Node ID d5531095d06b5e4513e891b89fd3085311490304
# Parent  313ab23f05dbd7b708653ff4603b62da534efd84
x86: Fix emulation of DIV instruction. Never actually used currently,
but this will avoid a #DE in Xen.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 xen/arch/x86/x86_emulate.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -r 313ab23f05db -r d5531095d06b xen/arch/x86/x86_emulate.c
--- a/xen/arch/x86/x86_emulate.c        Thu Oct 11 13:53:50 2007 +0100
+++ b/xen/arch/x86/x86_emulate.c        Thu Oct 11 19:18:12 2007 +0100
@@ -586,7 +586,7 @@ static int imul_dbl(unsigned long m[2])
  */
 static int div_dbl(unsigned long u[2], unsigned long v)
 {
-    if ( (v == 0) || (u[1] > v) || ((u[1] == v) && (u[0] != 0)) )
+    if ( (v == 0) || (u[1] >= v) )
         return 1;
     asm ( "div %4"
           : "=a" (u[0]), "=d" (u[1])

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