1/*	$NetBSD$	*/
2/*-
3 * Copyright (c) 2011 The NetBSD Foundation, Inc.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Joerg Sonnenberger.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <machine/asm.h>
32	RCSID("$NetBSD$")
33
34#  ifdef BCOPY
35ENTRY(bcopy)
36	pushl	%esi
37	pushl	%edi
38	movl	12(%esp), %esi
39	movl	16(%esp), %edi
40	jmp	__memmove_start
41#  endif
42#  if defined(MEMMOVE)
43ENTRY(memcpy)
44ENTRY(memmove)
45	pushl	%esi
46	pushl	%edi
47	movl	12(%esp), %edi
48	movl	16(%esp), %esi
49	.globl __memmove_start
50__memmove_start:
51	movl	20(%esp), %ecx
52	pushl	%edi
53	testl %ecx, %ecx
54	jz 2f
55	cmpl	%esi, %edi
56	jb 1f
57	addl %ecx, %esi
58	decl %esi
59	addl %ecx, %edi
60	decl %edi
61	std
621:
63	rep
64	movsb
652:
66	cld
67	popl	%eax
68	popl	%edi
69	popl	%esi
70	ret
71END(memcpy)
72END(memmove)
73#  endif /* MEMMOVE */
74#  ifdef BCOPY
75END(bcopy)
76#  endif
77