--- nono/exp/optestm88k/optestm88k_main.c	2026/04/29 17:04:57	1.1.1.1
+++ nono/exp/optestm88k/optestm88k_main.c	2026/04/29 17:05:00	1.1.1.2
@@ -20,7 +20,7 @@ int global_work[2];
 #define exception_expected (global_work[1])
 
 static void
-sigfpe(int signo, siginfo_t *si, void *ctx)
+signal_handler(int signo, siginfo_t *si, void *ctx)
 {
 	if (si->si_signo == SIGFPE) {
 		if (si->si_code == FPE_INTOVF) {
@@ -30,6 +30,14 @@ sigfpe(int signo, siginfo_t *si, void *c
 			exception_occurred = 2;
 			return;
 		}
+		printf("%s: signo=SIGFPE si_code=%x\n", __func__, si->si_code);
+	}
+	if (si->si_signo == SIGILL) {
+		if (si->si_code == ILL_ILLOPC) {
+			exception_occurred = 0x1000;
+			return;
+		}
+		printf("%s: signo=SIGILL si_code=%x\n", __func__, si->si_code);
 	}
 	// XXX
 	exception_occurred = -1;
@@ -53,9 +61,10 @@ main(int ac, char *av[])
 
 	struct sigaction act;
 	memset(&act, 0, sizeof(act));
-	act.sa_sigaction = sigfpe;
+	act.sa_sigaction = signal_handler;
 	act.sa_flags = SA_SIGINFO;
 	sigaction(SIGFPE, &act, NULL);
+	sigaction(SIGILL, &act, NULL);
 
 	for (i = j = 0; test_table[i].code != NULL; i++, j = 0) {
 		t = &test_table[i];