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cc65/libsrc/runtime/decsp1.s

24 lines
280 B
ArmAsm

;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Decrement the stackpointer by 1
;
.export decsp1
.importzp sp
.proc decsp1
ldy sp
bne @L1
dec sp+1
@L1: dec sp
rts
.endproc