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Annotation of xinu/sys/netutil.s, revision 1.1

1.1     ! root        1: /* netutil.s - hs2net, net2hs, hl2net, net2hl */
        !             2: 
        !             3: /*------------------------------------------------------------------------
        !             4:  * Utility routines that map host data to/from network byte/word order
        !             5:  * (needed because host is "Little Endian", network is "Big Endian")
        !             6:  *------------------------------------------------------------------------
        !             7: */
        !             8:        .text
        !             9:        .align  1
        !            10:        .globl  _hl2net
        !            11:        .globl  _net2hl
        !            12: _hl2net:                       /* Entry point that maps ints,longs     */
        !            13: _net2hl:                       /*  to/from host/network byte order     */
        !            14:        .word   0x0             /* save no registers on entry           */
        !            15:        movb    7(ap),r0
        !            16:        insv    6(ap),$8,$8,r0
        !            17:        insv    5(ap),$16,$8,r0
        !            18:        insv    4(ap),$24,$8,r0
        !            19:        ret
        !            20: 
        !            21:        .align  1
        !            22:        .globl  _hs2net
        !            23:        .globl  _net2hs
        !            24: _hs2net:                       /* Entry point that maps shorts to/from */
        !            25: _net2hs:                       /*  host/network byte order             */
        !            26:        .word   0x0             /* save no registers on entry           */
        !            27:        movb    5(ap),r0        /* swap short argument bytes and return */
        !            28:        insv    4(ap),$8,$8,r0
        !            29:        cvtwl   r0,r0           /* C convention: convert to int         */
        !            30:        ret

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