.global _start
        .text
_start:
        # write(1, message, 13)
        mov     $1, %rax
        mov     $1, %rdi
        mov     $message, %rsi
        mov     $13, %rdx
        syscall
        # exit(0)
        mov     $60, %rax
        xor     %rdi, %rdi
        syscall
message:
        .ascii  "Hello, world\n"