aboutsummaryrefslogtreecommitdiff
path: root/target-i386
diff options
context:
space:
mode:
Diffstat (limited to 'target-i386')
-rw-r--r--target-i386/translate.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 8085467..731b10d 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -8008,6 +8008,11 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
}
/* fallthru */
case 0xf9 ... 0xff: /* sfence */
+ if (!(s->cpuid_features & CPUID_SSE)
+ || (prefixes & PREFIX_LOCK)) {
+ goto illegal_op;
+ }
+ break;
case 0xe8 ... 0xef: /* lfence */
case 0xf0 ... 0xf7: /* mfence */
if (!(s->cpuid_features & CPUID_SSE2)