bswap32.S revision 1.1
11.1Smatt/* $NetBSD: bswap32.S,v 1.1 2007/03/31 06:13:52 matt Exp $ */ 21.1Smatt 31.1Smatt/*- 41.1Smatt * Copyright (c) 1997 The NetBSD Foundation, Inc. 51.1Smatt * All rights reserved. 61.1Smatt * 71.1Smatt * This code is derived from software contributed to The NetBSD Foundation 81.1Smatt * by Matt Thomas. 91.1Smatt * 101.1Smatt * Redistribution and use in source and binary forms, with or without 111.1Smatt * modification, are permitted provided that the following conditions 121.1Smatt * are met: 131.1Smatt * 1. Redistributions of source code must retain the above copyright 141.1Smatt * notice, this list of conditions and the following disclaimer. 151.1Smatt * 2. Redistributions in binary form must reproduce the above copyright 161.1Smatt * notice, this list of conditions and the following disclaimer in the 171.1Smatt * documentation and/or other materials provided with the distribution. 181.1Smatt * 3. All advertising materials mentioning features or use of this software 191.1Smatt * must display the following acknowledgement: 201.1Smatt * This product includes software developed by the NetBSD 211.1Smatt * Foundation, Inc. and its contributors. 221.1Smatt * 4. Neither the name of The NetBSD Foundation nor the names of its 231.1Smatt * contributors may be used to endorse or promote products derived 241.1Smatt * from this software without specific prior written permission. 251.1Smatt * 261.1Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 271.1Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 281.1Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 291.1Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 301.1Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 311.1Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 321.1Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 331.1Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 341.1Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 351.1Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 361.1Smatt * POSSIBILITY OF SUCH DAMAGE. 371.1Smatt */ 381.1Smatt 391.1Smatt#include <machine/asm.h> 401.1Smatt 411.1Smatt#if defined(_KERNEL) || defined(_STANDALONE) 421.1SmattENTRY(_C_LABEL(bswap32), 0) 431.1Smatt#else 441.1Smatt#if BYTE_ORDER == LITTLE_ENDIAN 451.1SmattALTENTRY(_C_LABEL(ntohl)) 461.1SmattALTENTRY(_C_LABEL(htonl)) 471.1Smatt#endif 481.1SmattENTRY(_C_LABEL(__bswap32), 0) 491.1Smatt#endif 501.1Smatt rotl $-8, 4(%ap), %r0 511.1Smatt insv %r0, $16, $8, %r0 521.1Smatt rotl $8, 4(%ap), %r1 531.1Smatt movb %r1, %r0 541.1Smatt ret 551.1Smatt 56