mirror of
https://github.com/cc65/cc65.git
synced 2024-11-15 11:05:56 +00:00
36 lines
685 B
ArmAsm
36 lines
685 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 06.08.1998
|
|
; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
|
|
;
|
|
; CC65 runtime: swap ax with TOS
|
|
;
|
|
|
|
.export swapstk
|
|
.importzp sp, ptr4
|
|
|
|
.macpack cpu
|
|
|
|
swapstk:
|
|
sta ptr4
|
|
stx ptr4+1
|
|
ldy #1 ; index
|
|
lda (sp),y
|
|
tax
|
|
lda ptr4+1
|
|
sta (sp),y
|
|
.if (.cpu .bitand ::CPU_ISET_65SC02)
|
|
lda (sp)
|
|
tay
|
|
lda ptr4
|
|
sta (sp)
|
|
tya
|
|
.else
|
|
dey
|
|
lda (sp),y
|
|
pha
|
|
lda ptr4
|
|
sta (sp),y
|
|
pla
|
|
.endif
|
|
rts ; whew!
|