From cc19e497a047193db5083425957d7292c8dd3226 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Thu, 14 Jul 2016 16:20:26 -0400 Subject: [PATCH] target-i386: Generate fences for x86 Signed-off-by: Pranith Kumar Message-Id: <20160714202026.9727-15-bobby.prani@gmail.com> Signed-off-by: Richard Henderson --- target-i386/translate.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target-i386/translate.c b/target-i386/translate.c index fa2ac48173..9447557911 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: