mirror of
https://github.com/cc65/cc65.git
synced 2024-12-27 00:29:31 +00:00
30 lines
268 B
ArmAsm
30 lines
268 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 04.10.2001
|
|
;
|
|
; CC65 runtime: Multiply the primary register
|
|
;
|
|
|
|
.export mulax5
|
|
.importzp ptr1
|
|
|
|
.proc mulax5
|
|
|
|
sta ptr1
|
|
stx ptr1+1
|
|
asl a
|
|
rol ptr1+1
|
|
asl a
|
|
rol ptr1+1
|
|
clc
|
|
adc ptr1
|
|
pha
|
|
txa
|
|
adc ptr1+1
|
|
tax
|
|
pla
|
|
rts
|
|
|
|
.endproc
|
|
|
|
|