source: trunk/minix/lib/i86/em/em_lar2.s@ 11

.define .lar2
.text

.lar2:
                                ! bx, descriptor address
                                ! ax, index
        pop     cx
        pop     dx              ! base address
        push    cx
        push    si
        mov     si,dx
        sub     ax,(bx)
        mov     cx,4(bx)
        imul    cx
        add     si,ax
        sar     cx,#1
        jnb     1f
        xorb    ah,ah
        lodsb
        pop     si
        pop     bx
        push    ax
        jmp     (bx)
1:
        pop     dx              ! saved si
        mov     ax,4(bx)
        pop     bx              ! return address
        sub     sp,ax
        mov     ax,di           ! save di
        mov     di,sp
        rep
        mov
        mov     di,ax
        mov     si,dx
        jmp     (bx)