handle = dlopen("libc.so", RTLD_LAZY);
	if (handle == NULL) {
		fatalf("inittls: failed to dlopen main program");
		return;
	}
	// android_get_device_api_level is introduced in Android Q, so its mere presence
	// is enough.
	get_ver = dlsym(handle, "android_get_device_api_level");
	dlclose(handle);
	if (get_ver != NULL) {
		off = (void *)(TLS_SLOT_APP*sizeof(void *));