cc65/libsrc/runtime/incsp2.s

;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Increment the stackpointer by 2. For performance reasons,
; 		this modules does also contain the popax function.

       	.export		popax, incsp2
	.importzp	sp

        .macpack        cpu

; Pop a/x from stack. This function will run directly into incsp2

.proc	popax

	ldy  	#1
   	lda	(sp),y	   	; get hi byte
       	tax	     	   	; into x
.if (.cpu .bitand ::CPU_ISET_65SC02)
	lda	(sp)		; get lo byte
.else
   	dey
   	lda	(sp),y		; get lo byte
.endif

.endproc



.proc	incsp2

        inc     sp              ; 5
        beq     @L1             ; 2
        inc     sp              ; 5
        beq     @L2             ; 2
        rts

@L1:    inc     sp              ; 5
@L2:    inc     sp+1            ; 5
        rts

.endproc