> Second, an IRET with HF_NMI_MASK set can be translated to _only_ the
> reset of NMI mask followed by end of basic block. An IRET without
> HF_NMI_MASK instead can be translated the same way as now.
I want to make it like this, but it seems to me it can lead to zero tb size
and introduce bad side effect. What I do wrong?
case 0xcf: /* iret */
gen_svm_check_intercept(s, pc_start, SVM_EXIT_IRET);
if (!s->pe) {
/* real mode */
gen_helper_iret_real(cpu_env, tcg_const_i32(dflag - 1));
set_cc_op(s, CC_OP_EFLAGS);
} else if (s->vm86) {
if (s->iopl != 3) {
if (s->flags & HF_NMI_MASK) {
gen_reset_hflag(s, HF_NMI_MASK);
s->pc = pc_start;
gen_jmp_im(pc_start - s->cs_base);
} else {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
}
} else {
gen_helper_iret_real(cpu_env, tcg_const_i32(dflag - 1));
set_cc_op(s, CC_OP_EFLAGS);
}
} else {
gen_helper_iret_protected(cpu_env, tcg_const_i32(dflag - 1),
tcg_const_i32(s->pc - s->cs_base));
set_cc_op(s, CC_OP_EFLAGS);
}
gen_eob(s);
break;
Best regards,
Dmitry Poletaev.
