mirror of
https://github.com/cc65/cc65.git
synced 2024-10-31 04:04:49 +00:00
33 lines
308 B
ArmAsm
33 lines
308 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 04.10.2001
|
||
|
|
;
|
||
|
|
; CC65 runtime: Multiply the primary register
|
||
|
|
;
|
||
|
|
|
||
|
|
.export mulax10
|
||
|
|
.importzp ptr1
|
||
|
|
|
||
|
|
.proc mulax10
|
||
|
|
|
||
|
|
sta ptr1
|
||
|
|
stx ptr1+1
|
||
|
|
asl a
|
||
|
|
rol ptr1+1
|
||
|
|
asl a
|
||
|
|
rol ptr1+1
|
||
|
|
clc
|
||
|
|
adc ptr1
|
||
|
|
pha
|
||
|
|
txa
|
||
|
|
adc ptr1+1
|
||
|
|
sta ptr1+1
|
||
|
|
pla
|
||
|
|
asl a
|
||
|
|
rol ptr1+1
|
||
|
|
ldx ptr1+1
|
||
|
|
rts
|
||
|
|
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
|