/*	$OpenBSD: strlen.S,v 1.1 2004/01/28 01:44:45 mickey Exp $	*/
/*
 * Written by J.T. Conklin <jtc@netbsd.org>.
 * Public domain.
 * Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com>
 */

#include <machine/asm.h>

ENTRY(strlen)
	cld				/* set search forward */
	xorl	%eax,%eax		/* set search for null terminator */
	movq	$-1,%rcx		/* set search for lots of characters */
	repne				/* search! */
	scasb
	notq	%rcx			/* get length by taking	complement */
	leaq	-1(%rcx),%rax		/* and subtracting one */
	ret