diff options
Diffstat (limited to 'target-i386/translate.c')
| -rw-r--r-- | target-i386/translate.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index dab0378079..0db0d4a4b1 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -5803,14 +5803,24 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start) op = (modrm >> 3) & 7; switch(op) { case 0: /* fxsave */ - if (mod == 3 || !(s->cpuid_features & CPUID_FXSR)) + if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || + (s->flags & HF_EM_MASK)) goto illegal_op; + if (s->flags & HF_TS_MASK) { + gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); + break; + } gen_lea_modrm(s, modrm, ®_addr, &offset_addr); gen_op_fxsave_A0((s->dflag == 2)); break; case 1: /* fxrstor */ - if (mod == 3 || !(s->cpuid_features & CPUID_FXSR)) + if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || + (s->flags & HF_EM_MASK)) goto illegal_op; + if (s->flags & HF_TS_MASK) { + gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); + break; + } gen_lea_modrm(s, modrm, ®_addr, &offset_addr); gen_op_fxrstor_A0((s->dflag == 2)); break; |