probe process.function("foo").return {
    printf("eax = %#x\n", register("eax"));
    printf("u eax = %#x\n\n", u_register("eax"));

    printf("ax = %#x\n", register("ax"));
    printf("u ax = %#x\n\n", u_register("ax"));

    printf("al = %#x\n", register("al"));
    printf("u al = %#x\n\n", u_register("al"));

    printf("ah = %#x\n", register("ah"));
    printf("u ah = %#x\n", u_register("ah"));

    exit()
}
