blkcpy.S revision 1.2.2.2
1 1.2.2.2 nathanw /* $NetBSD: blkcpy.S,v 1.2.2.2 2002/02/28 04:14:50 nathanw Exp $ */ 2 1.2.2.2 nathanw 3 1.2.2.2 nathanw /* 4 1.2.2.2 nathanw * Copyright (c) 1994 Ludd, University of Lule}, Sweden. 5 1.2.2.2 nathanw * All rights reserved. 6 1.2.2.2 nathanw * 7 1.2.2.2 nathanw * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 nathanw * modification, are permitted provided that the following conditions 9 1.2.2.2 nathanw * are met: 10 1.2.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 nathanw * documentation and/or other materials provided with the distribution. 15 1.2.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 nathanw * must display the following acknowledgement: 17 1.2.2.2 nathanw * This product includes software developed at Ludd, University of Lule}. 18 1.2.2.2 nathanw * 4. The name of the author may not be used to endorse or promote products 19 1.2.2.2 nathanw * derived from this software without specific prior written permission 20 1.2.2.2 nathanw * 21 1.2.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.2.2.2 nathanw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.2.2.2 nathanw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.2.2.2 nathanw * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.2.2.2 nathanw * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.2.2.2 nathanw * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.2.2.2 nathanw * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.2.2.2 nathanw * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.2.2.2 nathanw * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.2.2.2 nathanw * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.2.2.2 nathanw */ 32 1.2.2.2 nathanw 33 1.2.2.2 nathanw #include <machine/asm.h> 34 1.2.2.2 nathanw 35 1.2.2.2 nathanw /* 36 1.2.2.2 nathanw * Copy a block of memory larger than 64K. 37 1.2.2.2 nathanw */ 38 1.2.2.2 nathanw ENTRY(__blkcpy,R6) 39 1.2.2.2 nathanw movl 4(%ap),%r1 40 1.2.2.2 nathanw movl 8(%ap),%r3 41 1.2.2.2 nathanw movl 12(%ap),%r6 42 1.2.2.2 nathanw jbr 2f 43 1.2.2.2 nathanw 1: subl2 %r0,%r6 44 1.2.2.2 nathanw movc3 %r0,(%r1),(%r3) 45 1.2.2.2 nathanw 2: movzwl $65535,%r0 46 1.2.2.2 nathanw cmpl %r6,%r0 47 1.2.2.2 nathanw jgtr 1b 48 1.2.2.2 nathanw movc3 %r6,(%r1),(%r3) 49 1.2.2.2 nathanw ret 50
Indexes created Tue Sep 23 02:09:52 GMT 2025