tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
17void copy_page_nommu(void *to, void *from)
18{
19 memcpy(to, from, PAGE_SIZE);
20}
21
22void clear_page_nommu(void *to)
23{
24 memset(to, 0, PAGE_SIZE);
25}
26
27__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
28{
29 memcpy(to, from, n);
30 return 0;
31}
32
33__kernel_size_t __clear_user(void *to, __kernel_size_t n)
34{
35 memset(to, 0, n);
36 return 0;
37}