Re: Stack Clearing (win32)

On Jan 15, 11:16 am, ArarghMail801NOSPAM <spamt...@[EMAIL PROTECTED]
> wrote:
> AFAIK, all windows APIs take parameters only in multiples of 4 bytes.
>
> So, both bytes(8) & words(16) are expanded to longs(32) prior to being
> pushed.  I think that this is being done partly to keep the stack
> dword(32) aligned.
>
> 0102A                       htons           proc    near
> 0102A  0F B7 4C 24 04                     movzx   ecx,word ptr [esp+4]
> 0102F  8B C1                                mov     eax,ecx
> 01031  33 D2                                xor     edx,edx
> 01033  C1 E8 08                             shr     eax,8
> 01036  8A F1                                mov     dh,cl
> 01038  0B C2                                or      eax,edx
> 0103A  C2 0004                              retn    4
>                             htons           endp

A little OT but you could also just not call htons and do it
yourself ;-)

    mov ax,100        ;****t number ?
    xchg ah,al        ;ax=network byte order

--
Cranky