.global _start

.text
_start:
    mov x8, #64             //64 is write
    mov x0, #1              //1 is stdout
    adr x1, msg             //mov address of msg into x1
    mov x2, #(msgend - msg) //msgend minus msg is the length of message
    svc #0                  //system call
    mov x8, #93             //93 is exit
    mov x0, xzr             //0 is the exit code. xzr is the zero register
    svc #0                  //system call

msg:
    .ascii "Hello world!\n"
msgend:
.align 4