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;