1*beb9c6d1Smatt/* $NetBSD: byte_swap_4.S,v 1.1 2014/08/10 05:47:35 matt Exp $ */ 2*beb9c6d1Smatt 3*beb9c6d1Smatt/*- 4*beb9c6d1Smatt * Copyright (c) 2014 The NetBSD Foundation, Inc. 5*beb9c6d1Smatt * All rights reserved. 6*beb9c6d1Smatt * 7*beb9c6d1Smatt * This code is derived from software contributed to The NetBSD Foundation 8*beb9c6d1Smatt * by Matt Thomas of 3am Software Foundry. 9*beb9c6d1Smatt * 10*beb9c6d1Smatt * Redistribution and use in source and binary forms, with or without 11*beb9c6d1Smatt * modification, are permitted provided that the following conditions 12*beb9c6d1Smatt * are met: 13*beb9c6d1Smatt * 1. Redistributions of source code must retain the above copyright 14*beb9c6d1Smatt * notice, this list of conditions and the following disclaimer. 15*beb9c6d1Smatt * 2. Redistributions in binary form must reproduce the above copyright 16*beb9c6d1Smatt * notice, this list of conditions and the following disclaimer in the 17*beb9c6d1Smatt * documentation and/or other materials provided with the distribution. 18*beb9c6d1Smatt * 19*beb9c6d1Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*beb9c6d1Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*beb9c6d1Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*beb9c6d1Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*beb9c6d1Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*beb9c6d1Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*beb9c6d1Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*beb9c6d1Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*beb9c6d1Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*beb9c6d1Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*beb9c6d1Smatt * POSSIBILITY OF SUCH DAMAGE. 30*beb9c6d1Smatt */ 31*beb9c6d1Smatt 32*beb9c6d1Smatt#include <machine/asm.h> 33*beb9c6d1Smatt 34*beb9c6d1Smatt#if defined(_KERNEL) || defined(_STANDALONE) 35*beb9c6d1Smatt#define FUNC _C_LABEL(bswap32) 36*beb9c6d1Smatt#else 37*beb9c6d1Smatt#define FUNC _C_LABEL(__bswap32) 38*beb9c6d1Smatt#endif 39*beb9c6d1Smatt 40*beb9c6d1SmattENTRY(FUNC) 41*beb9c6d1Smatt rev w0, w0 42*beb9c6d1Smatt ret 43*beb9c6d1SmattEND(FUNC) 44*beb9c6d1Smatt#if BYTE_ORDER == LITTLE_ENDIAN 45*beb9c6d1SmattSTRONG_ALIAS(_C_LABEL(ntohl), FUNC) 46*beb9c6d1SmattSTRONG_ALIAS(_C_LABEL(htonl), FUNC) 47*beb9c6d1Smatt#endif 48