1
0
mirror of https://github.com/cc65/cc65.git synced 2024-07-03 06:29:36 +00:00
cc65/libsrc/runtime/lpush.s

35 lines
369 B
ArmAsm
Raw Normal View History

;
; Ullrich von Bassewitz, 06.08.1998
;
; CC65 runtime: long push
;
;
; push eax on stack
;
.export push0ax, pusheax
.import decsp4
.importzp sp, sreg
push0ax:
ldy #0
sty sreg
sty sreg+1
pusheax:
pha ; decsp will destroy A (but not X)
jsr decsp4
ldy #3
lda sreg+1
sta (sp),y
dey
lda sreg
sta (sp),y
dey
txa
sta (sp),y
dey
pla
sta (sp),y
rts