minix/lib/i86/em/em_loi.s
2005-04-21 14:53:53 +00:00

38 lines
426 B
ArmAsm
Executable file

.define .loi
.define .los
.text
! #bytes in cx
! address in bx
! save si/di. they might be register variables
.los:
mov dx,si
mov si,bx
pop bx
mov ax,cx
sar cx,#1
jnb 1f
xorb ah,ah
lodsb
mov si,dx
push ax
jmp (bx)
1:
sub sp,ax
jmp 1f
.loi:
! only called with size > 4
mov dx,si
mov si,bx
pop bx
sub sp,cx
sar cx,#1
1:
mov ax,di
mov di,sp
rep
mov
mov si,dx
mov di,ax
jmp (bx)