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byte_swap_4.S revision 1.1.2.1 
      1  1.1.2.1  bouyer /*	$NetBSD: byte_swap_4.S,v 1.1.2.1 2000/11/20 18:09:31 bouyer Exp $	*/
      2      1.1  itojun 
      3      1.1  itojun /*-
      4      1.1  itojun  * Copyright (C) 1999 SHIMIZU Ryo.  All rights reserved.
      5      1.1  itojun  *
      6      1.1  itojun  * Redistribution and use in source and binary forms, with or without
      7      1.1  itojun  * modification, are permitted provided that the following conditions
      8      1.1  itojun  * are met:
      9      1.1  itojun  * 1. Redistributions of source code must retain the above copyright
     10      1.1  itojun  *    notice, this list of conditions and the following disclaimer.
     11      1.1  itojun  * 2. Redistributions in binary form must reproduce the above copyright
     12      1.1  itojun  *    notice, this list of conditions and the following disclaimer in the
     13      1.1  itojun  *    documentation and/or other materials provided with the distribution.
     14      1.1  itojun  * 3. The name of the author may not be used to endorse or promote products
     15      1.1  itojun  *    derived from this software without specific prior written permission.
     16      1.1  itojun  *
     17      1.1  itojun  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18      1.1  itojun  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19      1.1  itojun  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20      1.1  itojun  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21      1.1  itojun  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22      1.1  itojun  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23      1.1  itojun  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24      1.1  itojun  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25      1.1  itojun  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26      1.1  itojun  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27      1.1  itojun  */
     28      1.1  itojun 
     29      1.1  itojun #include <machine/asm.h>
     30  1.1.2.1  bouyer #include <machine/endian.h>
     31      1.1  itojun 
     32      1.1  itojun ENTRY(bswap32)
     33  1.1.2.1  bouyer #if BYTE_ORDER == LITTLE_ENDIAN
     34      1.1  itojun ALTENTRY(ntohl)
     35      1.1  itojun ALTENTRY(htonl)
     36  1.1.2.1  bouyer #endif
     37      1.1  itojun 	swap.b	r4,r0
     38      1.1  itojun 	swap.w	r0,r0
     39      1.1  itojun 	rts
     40      1.1  itojun 	swap.b	r0,r0
     41  1.1.2.1  bouyer #if BYTE_ORDER == BIG_ENDIAN
     42  1.1.2.1  bouyer ALTENTRY(ntohl)
     43  1.1.2.1  bouyer ALTENTRY(htonl)
     44  1.1.2.1  bouyer #endif
     45  1.1.2.1  bouyer 	rts
     46  1.1.2.1  bouyer 	mov	r4, r0
     47