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

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

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

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

    exit()
}
