@@ -8,4 +8,4 @@ TESTS+=exrl-trtr
TESTS+=pack
TESTS+=mvo
TESTS+=mvc
-
+TESTS+=trap
new file mode 100644
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2021 IBM Corp.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <signal.h>
+
+static void error1(const char *filename, int line, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ fprintf(stderr, "%s:%d: ", filename, line);
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ va_end(ap);
+ exit(1);
+}
+
+static int __chk_error(const char *filename, int line, int ret)
+{
+ if (ret < 0) {
+ error1(filename, line, "%m (ret=%d, errno=%d/%s)",
+ ret, errno, strerror(errno));
+ }
+ return ret;
+}
+
+#define error(fmt, ...) error1(__FILE__, __LINE__, fmt, ## __VA_ARGS__)
+
+#define chk_error(ret) __chk_error(__FILE__, __LINE__, (ret))
+
+int sigfpe_count;
+int sigill_count;
+
+static void sig_handler(int sig, siginfo_t *si, void *puc)
+{
+ if (sig == SIGFPE) {
+ if (si->si_code != 0) {
+ error("unexpected si_code: 0x%x != 0", si->si_code);
+ }
+ ++sigfpe_count;
+ return;
+ }
+
+ if (sig == SIGILL) {
+ ++sigill_count;
+ return;
+ }
+
+ error("unexpected signal 0x%x\n", sig);
+}
+
+int main(int argc, char **argv)
+{
+ sigfpe_count = sigill_count = 0;
+
+ struct sigaction act;
+
+ /* Set up SIG handler */
+ act.sa_sigaction = sig_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ chk_error(sigaction(SIGFPE, &act, NULL));
+ chk_error(sigaction(SIGILL, &act, NULL));
+
+ uint64_t z = 0x0ull;
+ uint64_t lz = 0xffffffffffffffffull;
+ asm volatile (
+ "lg %%r13,%[lz]\n"
+ "cgitne %%r13,0\n" /* SIGFPE */
+ "lg %%r13,%[z]\n"
+ "cgitne %%r13,0\n" /* no trap */
+ "nopr\n"
+ "lg %%r13,%[lz]\n"
+ "citne %%r13,0\n" /* SIGFPE */
+ "lg %%r13,%[z]\n"
+ "citne %%r13,0\n" /* no trap */
+ "nopr\n"
+ :
+ : [z] "m" (z), [lz] "m" (lz)
+ : "memory", "r13");
+
+ if (sigfpe_count != 2) {
+ error("unexpected SIGFPE count: %d != 2", sigfpe_count);
+ }
+ if (sigill_count != 0) {
+ error("unexpected SIGILL count: %d != 0", sigill_count);
+ }
+
+ printf("PASS\n");
+ return 0;
+}