mirror of
https://github.com/cc65/cc65.git
synced 2024-11-18 00:07:21 +00:00
26 lines
287 B
ArmAsm
26 lines
287 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 06.08.1998
|
||
|
|
;
|
||
|
|
; CC65 runtime: swap ax with TOS
|
||
|
|
;
|
||
|
|
|
||
|
|
.export swapstk
|
||
|
|
.importzp sp, ptr4
|
||
|
|
|
||
|
|
swapstk:
|
||
|
|
sta ptr4
|
||
|
|
stx ptr4+1
|
||
|
|
ldy #1 ; index
|
||
|
|
lda (sp),y
|
||
|
|
tax
|
||
|
|
lda ptr4+1
|
||
|
|
sta (sp),y
|
||
|
|
dey
|
||
|
|
lda (sp),y
|
||
|
|
pha
|
||
|
|
lda ptr4
|
||
|
|
sta (sp),y
|
||
|
|
pla
|
||
|
|
rts ; whew!
|
||
|
|
|