1*19ef5b5bSuebayasi/* $NetBSD: memcpy.S,v 1.2 2014/05/23 03:17:31 uebayasi Exp $ */ 2bdaa91a3Sjoerg/*- 3bdaa91a3Sjoerg * Copyright (c) 2011 The NetBSD Foundation, Inc. 4bdaa91a3Sjoerg * All rights reserved. 5bdaa91a3Sjoerg * 6bdaa91a3Sjoerg * This code is derived from software contributed to The NetBSD Foundation 7bdaa91a3Sjoerg * by Joerg Sonnenberger. 8bdaa91a3Sjoerg * 9bdaa91a3Sjoerg * Redistribution and use in source and binary forms, with or without 10bdaa91a3Sjoerg * modification, are permitted provided that the following conditions 11bdaa91a3Sjoerg * are met: 12bdaa91a3Sjoerg * 1. Redistributions of source code must retain the above copyright 13bdaa91a3Sjoerg * notice, this list of conditions and the following disclaimer. 14bdaa91a3Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 15bdaa91a3Sjoerg * notice, this list of conditions and the following disclaimer in the 16bdaa91a3Sjoerg * documentation and/or other materials provided with the distribution. 17bdaa91a3Sjoerg * 18bdaa91a3Sjoerg * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19bdaa91a3Sjoerg * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20bdaa91a3Sjoerg * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21bdaa91a3Sjoerg * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22bdaa91a3Sjoerg * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23bdaa91a3Sjoerg * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24bdaa91a3Sjoerg * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25bdaa91a3Sjoerg * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26bdaa91a3Sjoerg * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27bdaa91a3Sjoerg * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28bdaa91a3Sjoerg * POSSIBILITY OF SUCH DAMAGE. 29bdaa91a3Sjoerg */ 30bdaa91a3Sjoerg 31bdaa91a3Sjoerg#include <machine/asm.h> 32*19ef5b5bSuebayasi RCSID("$NetBSD: memcpy.S,v 1.2 2014/05/23 03:17:31 uebayasi Exp $") 33bdaa91a3Sjoerg 34bdaa91a3Sjoerg# ifdef BCOPY 35bdaa91a3SjoergENTRY(bcopy) 36bdaa91a3Sjoerg pushl %esi 37bdaa91a3Sjoerg pushl %edi 38bdaa91a3Sjoerg movl 12(%esp), %esi 39bdaa91a3Sjoerg movl 16(%esp), %edi 40bdaa91a3Sjoerg jmp __memmove_start 41bdaa91a3Sjoerg# endif 42bdaa91a3Sjoerg# if defined(MEMMOVE) 43bdaa91a3SjoergENTRY(memcpy) 44bdaa91a3SjoergENTRY(memmove) 45bdaa91a3Sjoerg pushl %esi 46bdaa91a3Sjoerg pushl %edi 47bdaa91a3Sjoerg movl 12(%esp), %edi 48bdaa91a3Sjoerg movl 16(%esp), %esi 49bdaa91a3Sjoerg .globl __memmove_start 50bdaa91a3Sjoerg__memmove_start: 51bdaa91a3Sjoerg movl 20(%esp), %ecx 52bdaa91a3Sjoerg pushl %edi 53bdaa91a3Sjoerg testl %ecx, %ecx 54bdaa91a3Sjoerg jz 2f 55bdaa91a3Sjoerg cmpl %esi, %edi 56bdaa91a3Sjoerg jb 1f 57bdaa91a3Sjoerg addl %ecx, %esi 58bdaa91a3Sjoerg decl %esi 59bdaa91a3Sjoerg addl %ecx, %edi 60bdaa91a3Sjoerg decl %edi 61bdaa91a3Sjoerg std 62bdaa91a3Sjoerg1: 63bdaa91a3Sjoerg rep 64bdaa91a3Sjoerg movsb 65bdaa91a3Sjoerg2: 66bdaa91a3Sjoerg cld 67bdaa91a3Sjoerg popl %eax 68bdaa91a3Sjoerg popl %edi 69bdaa91a3Sjoerg popl %esi 70bdaa91a3Sjoerg ret 71*19ef5b5bSuebayasiEND(memcpy) 72*19ef5b5bSuebayasiEND(memmove) 73bdaa91a3Sjoerg# endif /* MEMMOVE */ 74*19ef5b5bSuebayasi# ifdef BCOPY 75*19ef5b5bSuebayasiEND(bcopy) 76*19ef5b5bSuebayasi# endif 77