.segment "LIBCODE"
;
; Ullrich von Bassewitz, 08.10.1998
;
; CC65 runtime: += operator for longs on the stack
;

       	.export		laddeq0sp, laddeqysp
	.importzp	sp, sreg

laddeq0sp:
      	ldy	#0
laddeqysp:
	clc
	adc	(sp),y
	sta	(sp),y
	pha
	iny
	txa
	adc	(sp),y
	sta	(sp),y
	tax
	iny
	lda	sreg
	adc	(sp),y
	sta	(sp),y
	sta	sreg
	iny
	lda	sreg+1
	adc	(sp),y
	sta	(sp),y
	sta	sreg+1
	pla
	rts

