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https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-04 02:18:37 +00:00
3d2decfed8
which are x86 specific. The first three x86 specific ones should work on amd64 as well so I have added those as amd64 tests. Note that the x86/amd64 tests will still fail as VEX doesn't always trigger the right sort of signal for faulting instructions at the moment. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4992
150 lines
2.6 KiB
C
150 lines
2.6 KiB
C
/*
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Check that a fault signal handler gets the expected info
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <setjmp.h>
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#include <sys/mman.h>
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#include <unistd.h>
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struct test {
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void (*test)(void);
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int sig;
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int code;
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volatile void *addr;
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};
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static const struct test *cur_test;
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static int zero();
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static jmp_buf escape;
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#define BADADDR ((int *)0x1234)
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#define FILESIZE (16*1024)
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#define MAPSIZE (2*FILESIZE)
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static char volatile *volatile mapping;
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static int testsig(int sig, int want)
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{
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if (sig != want) {
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fprintf(stderr, " FAIL: expected signal %d, not %d\n", want, sig);
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return 0;
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}
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return 1;
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}
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static int testcode(int code, int want)
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{
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if (code != want) {
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fprintf(stderr, " FAIL: expected si_code==%d, not %d\n", want, code);
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return 0;
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}
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return 1;
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}
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static int testaddr(void *addr, volatile void *want)
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{
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if (addr != want) {
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fprintf(stderr, " FAIL: expected si_addr==%p, not %p\n", want, addr);
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return 0;
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}
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return 1;
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}
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static void handler(int sig, siginfo_t *si, void *uc)
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{
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int ok = 1;
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ok = ok && testsig(sig, cur_test->sig);
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ok = ok && testcode(si->si_code, cur_test->code);
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if (cur_test->addr)
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ok = ok && testaddr(si->si_addr, cur_test->addr);
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if (ok)
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fprintf(stderr, " PASS\n");
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siglongjmp(escape, ok + 1);
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}
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static void test1(void)
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{
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*BADADDR = 'x';
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}
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static void test2()
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{
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mapping[0] = 'x';
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}
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static void test3()
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{
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mapping[FILESIZE+10];
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}
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static void test4()
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{
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volatile int v = 44/zero();
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(void)v;
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}
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int main()
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{
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int fd, i;
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static const int sigs[] = { SIGSEGV, SIGILL, SIGBUS, SIGFPE, SIGTRAP };
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struct sigaction sa;
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sa.sa_sigaction = handler;
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sa.sa_flags = SA_SIGINFO;
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sigfillset(&sa.sa_mask);
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for(i = 0; i < sizeof(sigs)/sizeof(*sigs); i++)
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sigaction(sigs[i], &sa, NULL);
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fd = open("faultstatus.tmp", O_CREAT|O_TRUNC|O_EXCL, 0600);
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if (fd == -1) {
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perror("tmpfile");
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exit(1);
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}
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unlink("faultstatus.tmp");
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ftruncate(fd, FILESIZE);
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mapping = mmap(0, MAPSIZE, PROT_READ, MAP_PRIVATE, fd, 0);
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close(fd);
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{
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const struct test tests[] = {
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#define T(n, sig, code, addr) { test##n, sig, code, addr }
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T(1, SIGSEGV, SEGV_MAPERR, BADADDR),
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T(2, SIGSEGV, SEGV_ACCERR, mapping),
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T(3, SIGBUS, BUS_ADRERR, &mapping[FILESIZE+10]),
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T(4, SIGFPE, FPE_INTDIV, 0),
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#undef T
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};
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for(i = 0; i < sizeof(tests)/sizeof(*tests); i++) {
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cur_test = &tests[i];
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if (sigsetjmp(escape, 1) == 0) {
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fprintf(stderr, "Test %d: ", i+1);
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tests[i].test();
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fprintf(stderr, " FAIL: no fault, or handler returned\n");
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}
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}
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}
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return 0;
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}
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static int zero()
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{
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return 0;
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}
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