ret_state
kgdb_info[cpu].ret_state = 0;
kgdb_info[cpu].ret_state = 1;
kgdb_info[cpu].ret_state = error;
return kgdb_info[cpu].ret_state;
int ret_state;
kgdb_info[ks->cpu].ret_state = gdbstub_state(ks, "e");
kgdb_info[ks->cpu].ret_state = 1;
return kgdb_info[ks->cpu].ret_state;