source: trunk/minix/lib/i86/misc/hton86.s@ 10

!       htonX(), ntohX() - Host to network byte order conversion
!                                                       Author: Kees J. Bot
!                                                               7 Jan 1997
!
! This is a little endian 8086, so we swap bytes to/from the big endian network
! order.  The normal <net/hton.h> macros are not used, they give lousy code.

.text
.define _htons, _ntohs
_htons:
_ntohs:
        mov     bx, sp
        movb    ah, 2(bx)       ! Load bytes into ax in reverse order
        movb    al, 3(bx)
        ret

.define _htonl, _ntohl
_htonl:
_ntohl:
        mov     bx, sp
        movb    dh, 2(bx)       ! Load bytes into dx:ax in reverse order
        movb    dl, 3(bx)
        movb    ah, 4(bx)
        movb    al, 5(bx)
        ret