1*f14fb602SLionel Sambuc/* $NetBSD: memcpy.S,v 1.1 2011/06/16 16:39:14 joerg Exp $ */ 2*f14fb602SLionel Sambuc/*- 3*f14fb602SLionel Sambuc * Copyright (c) 2011 The NetBSD Foundation, Inc. 4*f14fb602SLionel Sambuc * All rights reserved. 5*f14fb602SLionel Sambuc * 6*f14fb602SLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation 7*f14fb602SLionel Sambuc * by Joerg Sonnenberger. 8*f14fb602SLionel Sambuc * 9*f14fb602SLionel Sambuc * Redistribution and use in source and binary forms, with or without 10*f14fb602SLionel Sambuc * modification, are permitted provided that the following conditions 11*f14fb602SLionel Sambuc * are met: 12*f14fb602SLionel Sambuc * 1. Redistributions of source code must retain the above copyright 13*f14fb602SLionel Sambuc * notice, this list of conditions and the following disclaimer. 14*f14fb602SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 15*f14fb602SLionel Sambuc * notice, this list of conditions and the following disclaimer in the 16*f14fb602SLionel Sambuc * documentation and/or other materials provided with the distribution. 17*f14fb602SLionel Sambuc * 18*f14fb602SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19*f14fb602SLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20*f14fb602SLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21*f14fb602SLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22*f14fb602SLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23*f14fb602SLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24*f14fb602SLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25*f14fb602SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26*f14fb602SLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27*f14fb602SLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28*f14fb602SLionel Sambuc * POSSIBILITY OF SUCH DAMAGE. 29*f14fb602SLionel Sambuc */ 30*f14fb602SLionel Sambuc 31*f14fb602SLionel Sambuc#include <machine/asm.h> 32*f14fb602SLionel Sambuc RCSID("$NetBSD: memcpy.S,v 1.1 2011/06/16 16:39:14 joerg Exp $") 33*f14fb602SLionel Sambuc 34*f14fb602SLionel Sambuc# ifdef BCOPY 35*f14fb602SLionel SambucENTRY(bcopy) 36*f14fb602SLionel Sambuc pushl %esi 37*f14fb602SLionel Sambuc pushl %edi 38*f14fb602SLionel Sambuc movl 12(%esp), %esi 39*f14fb602SLionel Sambuc movl 16(%esp), %edi 40*f14fb602SLionel Sambuc jmp __memmove_start 41*f14fb602SLionel Sambuc# endif 42*f14fb602SLionel Sambuc# if defined(MEMMOVE) 43*f14fb602SLionel SambucENTRY(memcpy) 44*f14fb602SLionel SambucENTRY(memmove) 45*f14fb602SLionel Sambuc pushl %esi 46*f14fb602SLionel Sambuc pushl %edi 47*f14fb602SLionel Sambuc movl 12(%esp), %edi 48*f14fb602SLionel Sambuc movl 16(%esp), %esi 49*f14fb602SLionel Sambuc .globl __memmove_start 50*f14fb602SLionel Sambuc__memmove_start: 51*f14fb602SLionel Sambuc movl 20(%esp), %ecx 52*f14fb602SLionel Sambuc pushl %edi 53*f14fb602SLionel Sambuc testl %ecx, %ecx 54*f14fb602SLionel Sambuc jz 2f 55*f14fb602SLionel Sambuc cmpl %esi, %edi 56*f14fb602SLionel Sambuc jb 1f 57*f14fb602SLionel Sambuc addl %ecx, %esi 58*f14fb602SLionel Sambuc decl %esi 59*f14fb602SLionel Sambuc addl %ecx, %edi 60*f14fb602SLionel Sambuc decl %edi 61*f14fb602SLionel Sambuc std 62*f14fb602SLionel Sambuc1: 63*f14fb602SLionel Sambuc rep 64*f14fb602SLionel Sambuc movsb 65*f14fb602SLionel Sambuc2: 66*f14fb602SLionel Sambuc cld 67*f14fb602SLionel Sambuc popl %eax 68*f14fb602SLionel Sambuc popl %edi 69*f14fb602SLionel Sambuc popl %esi 70*f14fb602SLionel Sambuc ret 71*f14fb602SLionel Sambuc# endif /* MEMMOVE */ 72