1/* $NetBSD: movstr.S,v 1.8 2006/05/22 21:34:08 uwe Exp $ */ 2 3/*- 4 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <machine/asm.h> 30 31 32#ifdef __ELF__ 33 .hidden __movstr, __movmem 34#endif 35 36 37NENTRY(__movstr) 38 mov #16, r0 39 cmp/gt r0, r6 40 bf loop2 41 42 .align 2 43loop1: 44 mov.l @r5+, r0 45 mov.l r0, @r4 46 mov.l @r5+, r0 47 mov.l r0, @(4, r4) 48 mov.l @r5+, r0 49 mov.l r0, @(8, r4) 50 mov.l @r5+, r0 51 mov.l r0, @(12, r4) 52 mov.l @r5+, r0 53 mov.l r0, @(16, r4) 54 mov.l @r5+, r0 55 mov.l r0, @(20, r4) 56 mov.l @r5+, r0 57 mov.l r0, @(24, r4) 58 mov.l @r5+, r0 59 mov.l r0, @(28, r4) 60 mov.l @r5+, r0 61 mov.l r0, @(32, r4) 62 mov.l @r5+, r0 63 mov.l r0, @(36, r4) 64 mov.l @r5+, r0 65 mov.l r0, @(40, r4) 66 mov.l @r5+, r0 67 mov.l r0, @(44, r4) 68 mov.l @r5+, r0 69 mov.l r0, @(48, r4) 70 mov.l @r5+, r0 71 mov.l r0, @(52, r4) 72 mov.l @r5+, r0 73 mov.l r0, @(56, r4) 74 mov.l @r5+, r0 75 mov.l r0, @(60, r4) 76 add #-16, r6 77 add #64, r4 78 79 mov #16, r0 80 cmp/gt r0, r6 81 bt loop1 82 83loop2: 84 add #-32, r6 85 .align 2 861: 87 mov.l @r5+, r0 88 mov.l r0, @r4 89 add #4, r4 90 add #1, r6 91 tst r6, r6 92 bf 1b 93 94 rts 95 nop 96 97 98/* gcc4 uses movmem, older versions use movstr */ 99STRONG_ALIAS(__movmem, __movstr) 100