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Annotation of xinu/sys/netutil.s, revision 1.1.1.1

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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