diff options
-rw-r--r-- | tests/tcg/s390x/Makefile.target | 2 | ||||
-rw-r--r-- | tests/tcg/s390x/trap.c | 102 |
2 files changed, 103 insertions, 1 deletions
diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 5d3de1b..bd084c7 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -8,4 +8,4 @@ TESTS+=exrl-trtr TESTS+=pack TESTS+=mvo TESTS+=mvc - +TESTS+=trap diff --git a/tests/tcg/s390x/trap.c b/tests/tcg/s390x/trap.c new file mode 100644 index 0000000..d4c61c7 --- /dev/null +++ b/tests/tcg/s390x/trap.c @@ -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; +} |