1/*
2 *  linux/arch/arm/lib/copypage.S
3 *
4 *  Copyright (C) 1995-1999 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 *  ASM optimised string functions
11 */
12#include <linux/linkage.h>
13#include <linux/init.h>
14#include <asm/assembler.h>
15#include <asm/asm-offsets.h>
16
17		.text
18		.align	5
19ENTRY(v3_copy_user_page)
20	stmfd	sp!, {r4, lr}			@	2
21	mov	r2, #PAGE_SZ/64			@	1
22	ldmia	r1!, {r3, r4, ip, lr}		@	4+1
231:	stmia	r0!, {r3, r4, ip, lr}		@	4
24	ldmia	r1!, {r3, r4, ip, lr}		@	4+1
25	stmia	r0!, {r3, r4, ip, lr}		@	4
26	ldmia	r1!, {r3, r4, ip, lr}		@	4+1
27	stmia	r0!, {r3, r4, ip, lr}		@	4
28	ldmia	r1!, {r3, r4, ip, lr}		@	4
29	subs	r2, r2, #1			@	1
30	stmia	r0!, {r3, r4, ip, lr}		@	4
31	ldmneia	r1!, {r3, r4, ip, lr}		@	4
32	bne	1b				@	1
33	ldmfd	sp!, {r4, pc}			@	3
34
35	.align	5
36ENTRY(v3_clear_user_page)
37	str	lr, [sp, #-4]!
38	mov	r1, #PAGE_SZ/64			@ 1
39	mov	r2, #0				@ 1
40	mov	r3, #0				@ 1
41	mov	ip, #0				@ 1
42	mov	lr, #0				@ 1
431:	stmia	r0!, {r2, r3, ip, lr}		@ 4
44	stmia	r0!, {r2, r3, ip, lr}		@ 4
45	stmia	r0!, {r2, r3, ip, lr}		@ 4
46	stmia	r0!, {r2, r3, ip, lr}		@ 4
47	subs	r1, r1, #1			@ 1
48	bne	1b				@ 1
49	ldr	pc, [sp], #4
50
51	__INITDATA
52
53	.type	v3_user_fns, #object
54ENTRY(v3_user_fns)
55	.long	v3_clear_user_page
56	.long	v3_copy_user_page
57	.size	v3_user_fns, . - v3_user_fns
58