11.6Sriastrad/* $NetBSD: bswap32.S,v 1.6 2014/03/18 18:20:35 riastradh Exp $ */ 21.1Schristos 31.1Schristos/* 41.1Schristos * Copyright (C) 1996 Scott Reynolds. All rights reserved. 51.1Schristos * 61.1Schristos * Redistribution and use in source and binary forms, with or without 71.1Schristos * modification, are permitted provided that the following conditions 81.1Schristos * are met: 91.1Schristos * 1. Redistributions of source code must retain the above copyright 101.1Schristos * notice, this list of conditions and the following disclaimer. 111.1Schristos * 2. Redistributions in binary form must reproduce the above copyright 121.1Schristos * notice, this list of conditions and the following disclaimer in the 131.1Schristos * documentation and/or other materials provided with the distribution. 141.1Schristos * 3. The name of the author may not be used to endorse or promote products 151.1Schristos * derived from this software without specific prior written permission 161.1Schristos * 171.1Schristos * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 181.1Schristos * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 191.1Schristos * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 201.1Schristos * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 211.1Schristos * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 221.1Schristos * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 231.1Schristos * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 241.1Schristos * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 251.1Schristos * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 261.1Schristos * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 271.1Schristos */ 281.1Schristos 291.1Schristos#include <machine/asm.h> 301.1Schristos 311.2She#if defined(_KERNEL) || defined(_STANDALONE) 321.4Smatt#define BSWAP32 _C_LABEL(bswap32) 331.2She#else /* defined(_KERNEL) || defined(_STANDALONE) */ 341.4Smatt#define BSWAP32 _C_LABEL(__bswap32) 351.2She#endif /* defined(_KERNEL) || defined(_STANDALONE) */ 361.4Smatt 371.4Smatt_ENTRY(BSWAP32) 381.3Smatt movl 4(%sp),%d0 391.5Smatt#ifdef __mcfisac__ 401.5Smatt byterev %d0 411.5Smatt#elif defined(__mcoldfire__) 421.5Smatt movl %d0,%d1 431.5Smatt lsrl #8,%d0 | ABCD -> 0ABC 441.5Smatt andl #0x00ff00ff,%d0 | 0ABC -> 0A0C 451.5Smatt andl #0x00ff00ff,%d1 | ABCD -> 0B0D 461.5Smatt lsll #8,%d1 | 0B0D -> B0D0 471.5Smatt orl %d1,%d0 | 0A0C | B0D0 -> BADC 481.5Smatt swap %d0 | BADC -> DCBA 491.5Smatt#else 501.5Smatt rolw #8,%d0 511.5Smatt swap %d0 521.1Schristos rolw #8,%d0 531.5Smatt#endif 541.1Schristos rts 551.4SmattEND(BSWAP32) 56