@ numerals: print chars '0' through '9'

@ define my Raspberry Pi
		.cpu	cortex-a53
		.fpu	neon-fp-armv8
		.syntax unified

@ constants
		.equ	STDOUT, 1

@ program
		.text
		.align	2
		.global main
		.type	main, %function

main:
		@ save link register
		push	{ lr }
		@ init current char
		mov		r0, '0
        push	{ r0 }
1:
		@ print current char
		mov		r0, STDOUT
        mov		r1, sp
		mov		r2, 1
		bl		write
		@ increment current char
		pop		{ r0 }
		add		r0, r0, 1
		push	{ r0 }
		@ check loop condition
		cmp		r0, '9
		ble		1b
		@ set return val
		mov		r0, 0
		@ pop vals from stack
        pop		{ r1, pc }