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cc65/libsrc/runtime/decsp7.s

26 lines
314 B
ArmAsm

;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Decrement the stackpointer by 7
;
.export decsp7
.importzp sp
.proc decsp7
lda sp
sec
sbc #7
sta sp
bcc @L1
rts
@L1: dec sp+1
rts
.endproc