Merge "debuggerd_fallback: print maps." into oc-mr1-dev

  dump_abort_message(backtrace.get(), &log, abort_msg_address);

  dump_registers(&log, ucontext);

  // TODO: Dump registers from the ucontext.

  if (backtrace->Unwind(0, ucontext)) {

    dump_backtrace_and_stack(backtrace.get(), &log);

  } else {

    ALOGE("Unwind failed: pid = %d, tid = %d", pid, tid);

  }

  // TODO: Make this match the format of dump_all_maps above.

  _LOG(&log, logtype::MAPS, "memory map:\n");

  android::base::unique_fd maps_fd(open("/proc/self/maps", O_RDONLY | O_CLOEXEC));

  if (maps_fd == -1) {

    _LOG(&log, logtype::MAPS, "    failed to open /proc/self/maps: %s", strerror(errno));

  } else {

    char buf[256];

    ssize_t rc;

    while ((rc = TEMP_FAILURE_RETRY(read(maps_fd.get(), buf, sizeof(buf)))) > 0) {

      android::base::WriteFully(tombstone_fd, buf, rc);

    }

  }

}