29 lines
396 B
ArmAsm
29 lines
396 B
ArmAsm
|
.define .sli2
|
||
|
|
|
||
|
|
! Shift 16 bits integer left
|
||
|
|
! Expects on stack: number of shifts
|
||
|
|
! number to be shifted
|
||
|
|
! Yields in de-reg: result
|
||
|
|
|
||
|
|
.sli2: pop h
|
||
|
|
shld .retadr
|
||
|
|
|
||
|
|
pop d !de = number of shifts
|
||
|
|
pop h !hl= number to be shifted
|
||
|
|
mov a,d !if de>15 return zero
|
||
|
|
ora a
|
||
|
|
jnz 2f
|
||
|
|
mov a,e
|
||
|
|
cpi 16
|
||
|
|
jnc 2f
|
||
|
|
1: dcr e
|
||
|
|
jm 3f
|
||
|
|
dad h
|
||
|
|
jmp 1b
|
||
|
|
|
||
|
|
2: lxi h,0
|
||
|
|
3: xchg !result in de-registers
|
||
|
|
|
||
|
|
lhld .retadr
|
||
|
|
pchl
|