* [Qemu-devel] [4755] cmpxchg fixes
@ 2008-06-20 14:18 Fabrice Bellard
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From: Fabrice Bellard @ 2008-06-20 14:18 UTC (permalink / raw)
To: qemu-devel
Revision: 4755
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4755
Author: bellard
Date: 2008-06-20 14:18:35 +0000 (Fri, 20 Jun 2008)
Log Message:
-----------
cmpxchg fixes
Modified Paths:
--------------
trunk/target-i386/op_helper.c
Modified: trunk/target-i386/op_helper.c
===================================================================
--- trunk/target-i386/op_helper.c 2008-06-19 18:38:40 UTC (rev 4754)
+++ trunk/target-i386/op_helper.c 2008-06-20 14:18:35 UTC (rev 4755)
@@ -1837,6 +1837,8 @@
stq(a0, ((uint64_t)ECX << 32) | (uint32_t)EBX);
eflags |= CC_Z;
} else {
+ /* always do the store */
+ stq(a0, d);
EDX = (uint32_t)(d >> 32);
EAX = (uint32_t)d;
eflags &= ~CC_Z;
@@ -1850,6 +1852,8 @@
uint64_t d0, d1;
int eflags;
+ if ((a0 & 0xf) != 0)
+ raise_exception(EXCP0D_GPF);
eflags = cc_table[CC_OP].compute_all();
d0 = ldq(a0);
d1 = ldq(a0 + 8);
@@ -1858,6 +1862,9 @@
stq(a0 + 8, ECX);
eflags |= CC_Z;
} else {
+ /* always do the store */
+ stq(a0, d0);
+ stq(a0 + 8, d1);
EDX = d1;
EAX = d0;
eflags &= ~CC_Z;
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2008-06-20 14:18 [Qemu-devel] [4755] cmpxchg fixes Fabrice Bellard
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