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cc65/libsrc/runtime/steaxspi.s

40 lines
709 B
ArmAsm

;
; Ullrich von Bassewitz, 22.06.1998
;
; CC65 runtime: Store eax at the address on top of stack with index
;
.export steaxspidx
.import popax
.importzp sreg, ptr1, tmp1, tmp2, tmp3
.proc steaxspidx
sta tmp1
stx tmp2
sty tmp3
jsr popax ; get the pointer
sta ptr1
stx ptr1+1
ldy tmp3
lda tmp1
sta (ptr1),y
iny
lda tmp2
sta (ptr1),y
iny
tax
lda sreg
sta (ptr1),y
iny
lda sreg+1
sta (ptr1),y
lda tmp1
rts
.endproc