/* $NetBSD: bswap64.S,v 1.5 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> ENTRY(bswap64) movl 4(%sp),%d1 movl 8(%sp),%d0 #ifdef __mcfisac__ byterev %d0 byterev %d1 #elif defined(__mcoldfire__) movl %d3,-(%sp) movl %d2,-(%sp) movl #0x00ff00ff, %d3 movl %d0,%d2 andl %d3,%d2 lsll #8,%d2 lsrl #8,%d0 andl %d3,%d0 orl %d2,%d0 movl %d1,%d2 andl %d3,%d2 lsll #8,%d2 lsrl #8,%d1 andl %d3,%d1 orl %d2,%d1 movl (%sp)+,%d2 movl (%sp)+,%d3 #else rolw #8,%d1 rolw #8,%d0 swap %d1 swap %d0 rolw #8,%d0 rolw #8,%d1 #endif rts END(bswap64)