diff options
| -rw-r--r-- | target/i386/tcg/decode-new.c.inc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/i386/tcg/decode-new.c.inc b/target/i386/tcg/decode-new.c.inc index e4878b967f..80c579164f 100644 --- a/target/i386/tcg/decode-new.c.inc +++ b/target/i386/tcg/decode-new.c.inc @@ -1488,7 +1488,8 @@ static bool validate_vex(DisasContext *s, X86DecodedInsn *decode) if (!(s->flags & HF_AVX_EN_MASK)) { goto illegal; } - } else { + } else if (e->special != X86_SPECIAL_MMX || + (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA))) { if (!(s->flags & HF_OSFXSR_MASK)) { goto illegal; } |