fn start() {
    print("Hello World!\n", 13);
    exit(39);
}

fn print(msg, len) {
    asm (a1 = msg, a2 = len) {
        ld a2, 0, a2
        li a0, 1
        li a7, 64
        ecall
    }
}

fn exit(status) {
    asm (a0 = status) {
        ld a0, 0, a0
        li a7, 93
        ecall
    };
}