From: Pranith Kumar <[email protected]>
Signed-off-by: Pranith Kumar <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
target-i386/translate.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index fa2ac48..9447557 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -8012,13 +8012,21 @@ static target_ulong disas_insn(CPUX86State *env,
DisasContext *s,
|| (prefixes & PREFIX_LOCK)) {
goto illegal_op;
}
+ tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC);
break;
case 0xe8 ... 0xef: /* lfence */
+ if (!(s->cpuid_features & CPUID_SSE)
+ || (prefixes & PREFIX_LOCK)) {
+ goto illegal_op;
+ }
+ tcg_gen_mb(TCG_MO_LD_LD | TCG_BAR_SC);
+ break;
case 0xf0 ... 0xf7: /* mfence */
if (!(s->cpuid_features & CPUID_SSE2)
|| (prefixes & PREFIX_LOCK)) {
goto illegal_op;
}
+ tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
break;
default:
--
2.7.4
