KDB_REASON_BREAK
reason = KDB_REASON_BREAK;
if (reason != KDB_REASON_BREAK && ks->ex_vector == 0 &&
reason = KDB_REASON_BREAK;
if (reason == KDB_REASON_BREAK || reason == KDB_REASON_SWITCH) {
case KDB_REASON_BREAK:
reason == KDB_REASON_BREAK ?