qemu/tests/tcg/aarch64/pcalign-a64.c
Richard Henderson 0bdce4861f tests/tcg: Add arm and aarch64 pc alignment tests
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-12-15 10:35:26 +00:00

38 lines
729 B
C

/* Test PC misalignment exception */
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
static void *expected;
static void sigbus(int sig, siginfo_t *info, void *vuc)
{
assert(info->si_code == BUS_ADRALN);
assert(info->si_addr == expected);
exit(EXIT_SUCCESS);
}
int main()
{
void *tmp;
struct sigaction sa = {
.sa_sigaction = sigbus,
.sa_flags = SA_SIGINFO
};
if (sigaction(SIGBUS, &sa, NULL) < 0) {
perror("sigaction");
return EXIT_FAILURE;
}
asm volatile("adr %0, 1f + 1\n\t"
"str %0, %1\n\t"
"br %0\n"
"1:"
: "=&r"(tmp), "=m"(expected));
abort();
}