// Hello world example for AArch64
// Author: illustrissimus

// To build and run:
// as -o hello.o hello.S
// ld -o hello hello.o && strip -s hello
// ./hello

// To inspect:
// objdump -d hello

// AArch64 syscall list:
// https://github.com/torvalds/linux/blob/v5.8/include/uapi/asm-generic/unistd.h

// AArch64 reference:
// https://developer.arm.com/documentation/ddi0487/fc/

.data
msg: .ascii "Hello AArch64\n"
msg_len = . - msg

.text
.global _start

_start:
	mov     w8, #64 // write
	mov     x0, #1 //stdout
	ldr     x1, =msg // buffer
	ldr     x2, =msg_len // buffer length
	svc     #0

	mov     w8, #93 // exit
	mov     x0, #0 // status code
	svc     #0