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byte_swap_4.S revision 1.2.24.1 
      1  1.2.24.1    skrll /*	$NetBSD: byte_swap_4.S,v 1.2.24.1 2004/08/03 10:53:49 skrll 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       1.2  msaitoh #include <machine/endian.h>
     31       1.1   itojun 
     32       1.1   itojun ENTRY(bswap32)
     33       1.2  msaitoh #if BYTE_ORDER == LITTLE_ENDIAN
     34       1.1   itojun ALTENTRY(ntohl)
     35       1.1   itojun ALTENTRY(htonl)
     36       1.2  msaitoh #endif
     37  1.2.24.1    skrll 	swap.b	r4,r0
     38       1.1   itojun 	swap.w	r0,r0
     39       1.1   itojun 	rts
     40  1.2.24.1    skrll 	 swap.b	r0,r0
     41  1.2.24.1    skrll 
     42       1.2  msaitoh #if BYTE_ORDER == BIG_ENDIAN
     43  1.2.24.1    skrll ENTRY(ntohl)
     44       1.2  msaitoh ALTENTRY(htonl)
     45       1.2  msaitoh 	rts
     46  1.2.24.1    skrll 	 mov	r4, r0
     47  1.2.24.1    skrll #endif
     48