32 lines
357 B
ArmAsm
Executable file
32 lines
357 B
ArmAsm
Executable file
.define .inn
|
|
.text
|
|
|
|
! #bytes in cx
|
|
! bit # in ax
|
|
.inn:
|
|
xor dx,dx
|
|
mov bx,#8
|
|
div bx
|
|
mov bx,sp
|
|
add bx,#2
|
|
add bx,ax
|
|
cmp ax,cx
|
|
jae 1f
|
|
movb al,(bx)
|
|
mov bx,dx
|
|
testb al,bits(bx)
|
|
jz 1f
|
|
mov ax,#1
|
|
jmp 2f
|
|
1:
|
|
xor ax,ax
|
|
2:
|
|
pop bx
|
|
add sp,cx
|
|
! ax is result
|
|
jmp (bx)
|
|
|
|
.data
|
|
bits:
|
|
.data1 1,2,4,8,16,32,64,128
|