1 /*
2 * arch/sh/mm/pg-nommu.c
3 *
4 * clear_page()/copy_page() implementation for MMUless SH.
5 *
6 * Copyright (C) 2003 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/string.h>
15 #include <asm/page.h>
16 #include <asm/uaccess.h>
17
copy_page(void * to,void * from)18 void copy_page(void *to, void *from)
19 {
20 memcpy(to, from, PAGE_SIZE);
21 }
22
clear_page(void * to)23 void clear_page(void *to)
24 {
25 memset(to, 0, PAGE_SIZE);
26 }
27
__copy_user(void * to,const void * from,__kernel_size_t n)28 __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
29 {
30 memcpy(to, from, n);
31 return 0;
32 }
33
__clear_user(void * to,__kernel_size_t n)34 __kernel_size_t __clear_user(void *to, __kernel_size_t n)
35 {
36 memset(to, 0, n);
37 return 0;
38 }
39