50e36dd616
Signed-off-by: Jonathan Albrecht <jonathan.albrecht@linux.vnet.ibm.com> Message-Id: <20210709160459.4962-3-jonathan.albrecht@linux.vnet.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/*
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* Copyright 2021 IBM Corp.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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static void error1(const char *filename, int line, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "%s:%d: ", filename, line);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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exit(1);
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}
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static int __chk_error(const char *filename, int line, int ret)
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{
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if (ret < 0) {
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error1(filename, line, "%m (ret=%d, errno=%d/%s)",
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ret, errno, strerror(errno));
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}
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return ret;
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}
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#define error(fmt, ...) error1(__FILE__, __LINE__, fmt, ## __VA_ARGS__)
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#define chk_error(ret) __chk_error(__FILE__, __LINE__, (ret))
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int sigfpe_count;
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int sigill_count;
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static void sig_handler(int sig, siginfo_t *si, void *puc)
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{
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if (sig == SIGFPE) {
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if (si->si_code != 0) {
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error("unexpected si_code: 0x%x != 0", si->si_code);
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}
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++sigfpe_count;
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return;
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}
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if (sig == SIGILL) {
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++sigill_count;
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return;
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}
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error("unexpected signal 0x%x\n", sig);
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}
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int main(int argc, char **argv)
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{
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sigfpe_count = sigill_count = 0;
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struct sigaction act;
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/* Set up SIG handler */
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act.sa_sigaction = sig_handler;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_SIGINFO;
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chk_error(sigaction(SIGFPE, &act, NULL));
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chk_error(sigaction(SIGILL, &act, NULL));
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uint64_t z = 0x0ull;
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uint64_t lz = 0xffffffffffffffffull;
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asm volatile (
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"lg %%r13,%[lz]\n"
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"cgitne %%r13,0\n" /* SIGFPE */
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"lg %%r13,%[z]\n"
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"cgitne %%r13,0\n" /* no trap */
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"nopr\n"
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"lg %%r13,%[lz]\n"
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"citne %%r13,0\n" /* SIGFPE */
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"lg %%r13,%[z]\n"
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"citne %%r13,0\n" /* no trap */
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"nopr\n"
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:
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: [z] "m" (z), [lz] "m" (lz)
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: "memory", "r13");
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if (sigfpe_count != 2) {
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error("unexpected SIGFPE count: %d != 2", sigfpe_count);
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}
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if (sigill_count != 0) {
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error("unexpected SIGILL count: %d != 0", sigill_count);
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}
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printf("PASS\n");
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return 0;
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}
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