/*      $NetBSD: bswap16.S,v 1.6 2014/03/18 18:20:35 riastradh Exp $    */

/*
* Copyright (C) 1996 Scott Reynolds.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <machine/asm.h>

#if defined(_KERNEL) || defined(_STANDALONE)
#define BSWAP16 _C_LABEL(bswap16)
#else /* defined(_KERNEL) || defined(_STANDALONE) */
#define BSWAP16 _C_LABEL(__bswap16)
#endif /* defined(_KERNEL) || defined(_STANDALONE) */

_ENTRY(BSWAP16)
#ifdef __mcfisac__
       mvzw    6(%sp),%d0
       swap    %d0
       byterev %d0
#elif defined(__mcoldfire__)
       mvzw    6(%sp),%d0
       movl    %d0,%d1
       mvzb    %d0,%d0
       lsll    #8,%d0
       lsrl    #8,%d1
       orl     %d1,%d0
#else
       movl    4(%sp),%d0
       rolw    #8,%d0
#endif
       rts
END(BSWAP16)