;
; Ullrich von Bassewitz, 31.05.1998
;
; int strcmp (const char* s1, const char* s2);
;

	.export		_strcmp
	.import		popax
	.importzp	ptr1, ptr2

_strcmp:
	sta	ptr2		; Save s2
	stx	ptr2+1
	jsr	popax 		; Get s1
	sta	ptr1
	stx	ptr1+1
	ldy	#0

loop:	lda	(ptr1),y
 	cmp	(ptr2),y
	bne    	L1
	tax	  		; end of strings?
	beq	L3
	iny
	bne	loop
	inc	ptr1+1
	inc	ptr2+1
	bne	loop

L1:	bcs	L2
	ldx	#$FF
	rts

L2:	ldx	#$01
L3:	rts
