view target-utils/libc/strlen.S @ 659:761e8b0c65b0

loadagent: first step in implementation of binary flash programming
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 03 Mar 2020 17:55:20 +0000
parents 3670e7768ab6
children
line wrap: on
line source

	.text
	.code	32
	.globl	strlen
strlen:
	mov	r1, r0
1:	ldrb	r2, [r0], #1
	cmn	r2, #0
	bne	1b
	sbc	r0, r0, r1
	bx	lr