source: trunk/minix/lib/i86/em/em_loi.s@ 9

.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)