backtrace

debug.c

int mon_backtrace(int argc, char **argv, struct M *m) {
  uint32_t *ebp = (uint32_t*)read_ebp();
  uint32_t *base, *eip;
  int i;

  eip = ebp + 1;
  for (ebp = POINTTO(ebp) ; *ebp != 0 ; ebp = POINTTO(ebp)) {
    base = ebp + 1;
    printf("ebp %08x eip %08x  args", *ebp, *eip);
    for (i = 1; i <= 5; i++) {
      printf(" %08x", *(base + i));
    }
    printf("\n");
    eip = base;
  }

  return 0;
}