1/*
2 *  linux/arch/arm/lib/memcpy.S
3 *
4 *  Author:	Nicolas Pitre
5 *  Created:	Sep 28, 2005
6 *  Copyright:	MontaVista Software, Inc.
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU General Public License version 2 as
10 *  published by the Free Software Foundation.
11 */
12
13#include <linux/linkage.h>
14#include <asm/assembler.h>
15#include <asm/unwind.h>
16
17#define LDR1W_SHIFT	0
18#define STR1W_SHIFT	0
19
20	.macro ldr1w ptr reg abort
21	W(ldr) \reg, [\ptr], #4
22	.endm
23
24	.macro ldr4w ptr reg1 reg2 reg3 reg4 abort
25	ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
26	.endm
27
28	.macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
29	ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
30	.endm
31
32	.macro ldr1b ptr reg cond=al abort
33	ldr\cond\()b \reg, [\ptr], #1
34	.endm
35
36	.macro str1w ptr reg abort
37	W(str) \reg, [\ptr], #4
38	.endm
39
40	.macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
41	stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
42	.endm
43
44	.macro str1b ptr reg cond=al abort
45	str\cond\()b \reg, [\ptr], #1
46	.endm
47
48	.macro enter reg1 reg2
49	stmdb sp!, {r0, \reg1, \reg2}
50	.endm
51
52	.macro usave reg1 reg2
53	UNWIND(	.save	{r0, \reg1, \reg2}	)
54	.endm
55
56	.macro exit reg1 reg2
57	ldmfd sp!, {r0, \reg1, \reg2}
58	.endm
59
60	.text
61
62/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
63
64ENTRY(memcpy)
65
66#include "copy_template.S"
67
68ENDPROC(memcpy)
69