C++ (Cpp) addr2text Examples

Example #1

File: trap_linux.c Project: CrashSerious/showtime

static void 
traphandler(int sig, siginfo_t *si, void *UC)
{
  ucontext_t *uc = UC;
  static void *frames[MAXFRAMES];
  char buf[256];
  int nframes = backtrace(frames, MAXFRAMES);
  int i;
  const char *reason = NULL;

  TRAPMSG("Signal: %d in %s ", sig, line1);

  switch(sig) {
  case SIGSEGV:
    switch(si->si_code) {
    case SEGV_MAPERR:  reason = "Address not mapped"; break;
    case SEGV_ACCERR:  reason = "Access error"; break;
    }
    break;

  case SIGFPE:
    switch(si->si_code) {
    case FPE_INTDIV:  reason = "Integer division by zero"; break;
    }
    break;
  }

  addr2text(buf, sizeof(buf), si->si_addr);

  TRAPMSG("Fault address %s (%s)", buf, reason ?: "N/A");

  TRAPMSG("Loaded libraries: %s ", libs);
  snprintf(tmpbuf, sizeof(tmpbuf), "Register dump [%d]: ", NGREG);

  for(i = 0; i < NGREG; i++) {
#if __WORDSIZE == 64
    sappend(tmpbuf, sizeof(tmpbuf), "%016llx ", uc->uc_mcontext.gregs[i]);
#else
    sappend(tmpbuf, sizeof(tmpbuf), "%08x ", uc->uc_mcontext.gregs[i]);
#endif
  }
  TRAPMSG("%s", tmpbuf);

  TRAPMSG("STACKTRACE");

  for(i = 0; i < nframes; i++) {
    addr2text(buf, sizeof(buf), frames[i]);
    TRAPMSG("%s", buf);
  }
}

Example #2

File: linux_trap.c Project: smx-smx/showtime

static void
dumpstack(void *frames[], int nframes)
{
  const char *sym[nframes];
  int symoffset[nframes];
  char buf[256];
  int i;

  TRAPMSG("STACKTRACE (%d frames)", nframes);

  resolve_syms(frames, sym, symoffset, nframes);
  

  for(i = 0; i < nframes; i++) {
    if(sym[i] == NULL) {
      addr2text(buf, sizeof(buf), frames[i]);
    } else {
      snprintf(buf, sizeof(buf), "%s+0x%x", sym[i], symoffset[i]);
    }
    TRAPMSG("%s", buf);
  }
}

Example #3

File: linux_trap.c Project: smx-smx/showtime

static void 
traphandler(int sig, siginfo_t *si, void *UC)
{
  ucontext_t *uc = UC;

  if(extra_traphandler != NULL && !extra_traphandler(sig, si, UC))
    return;
    
  static void *frames[MAXFRAMES];
  char buf[256];
  int nframes = backtrace(frames, MAXFRAMES);
  const char *reason = NULL;

  TRAPMSG("Signal: %d in %s ", sig, line1);

  switch(sig) {
  case SIGSEGV:
    switch(si->si_code) {
    case SEGV_MAPERR:  reason = "Address not mapped"; break;
    case SEGV_ACCERR:  reason = "Access error"; break;
    }
    break;

  case SIGFPE:
    switch(si->si_code) {
    case FPE_INTDIV:  reason = "Integer division by zero"; break;
    }
    break;
  }

  addr2text(buf, sizeof(buf), si->si_addr);

  TRAPMSG("Fault address %s (%s)", buf, reason ?: "N/A");

  TRAPMSG("Loaded libraries: %s ", libs);

#if defined(__arm__) 
  TRAPMSG("   trap_no = %08lx", uc->uc_mcontext.trap_no);
  TRAPMSG("error_code = %08lx", uc->uc_mcontext.error_code);
  TRAPMSG("   oldmask = %08lx", uc->uc_mcontext.oldmask);
  TRAPMSG("        R0 = %08lx", uc->uc_mcontext.arm_r0);
  TRAPMSG("        R1 = %08lx", uc->uc_mcontext.arm_r1);
  TRAPMSG("        R2 = %08lx", uc->uc_mcontext.arm_r2);
  TRAPMSG("        R3 = %08lx", uc->uc_mcontext.arm_r3);
  TRAPMSG("        R4 = %08lx", uc->uc_mcontext.arm_r4);
  TRAPMSG("        R5 = %08lx", uc->uc_mcontext.arm_r5);
  TRAPMSG("        R6 = %08lx", uc->uc_mcontext.arm_r6);
  TRAPMSG("        R7 = %08lx", uc->uc_mcontext.arm_r7);
  TRAPMSG("        R8 = %08lx", uc->uc_mcontext.arm_r8);
  TRAPMSG("        R9 = %08lx", uc->uc_mcontext.arm_r9);
  TRAPMSG("       R10 = %08lx", uc->uc_mcontext.arm_r10);
  TRAPMSG("        FP = %08lx", uc->uc_mcontext.arm_fp);
  TRAPMSG("        IP = %08lx", uc->uc_mcontext.arm_ip);
  TRAPMSG("        SP = %08lx", uc->uc_mcontext.arm_sp);
  TRAPMSG("        LR = %08lx", uc->uc_mcontext.arm_lr);
  TRAPMSG("        PC = %08lx", uc->uc_mcontext.arm_pc);
  TRAPMSG("      CPSR = %08lx", uc->uc_mcontext.arm_cpsr);
  TRAPMSG("fault_addr = %08lx", uc->uc_mcontext.fault_address);

#else
  char tmpbuf[1024];
  snprintf(tmpbuf, sizeof(tmpbuf), "Register dump [%d]: ", NGREG);
  int i;
  for(i = 0; i < NGREG; i++) {
#if __WORDSIZE == 64
    sappend(tmpbuf, sizeof(tmpbuf), "%016llx ", uc->uc_mcontext.gregs[i]);
#else
    sappend(tmpbuf, sizeof(tmpbuf), "%08x ", uc->uc_mcontext.gregs[i]);
#endif
  }
  TRAPMSG("%s", tmpbuf);
#endif

  dumpstack(frames, nframes);
  _exit(8);
}