Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Yoshinori Sato | e96636c | 2006-09-27 17:21:02 +0900 | [diff] [blame^] | 17 | void copy_page_nommu(void *to, void *from) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | { |
| 19 | memcpy(to, from, PAGE_SIZE); |
| 20 | } |
| 21 | |
Yoshinori Sato | e96636c | 2006-09-27 17:21:02 +0900 | [diff] [blame^] | 22 | void clear_page_nommu(void *to) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | { |
| 24 | memset(to, 0, PAGE_SIZE); |
| 25 | } |
| 26 | |
Yoshinori Sato | e96636c | 2006-09-27 17:21:02 +0900 | [diff] [blame^] | 27 | __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | { |
Yoshinori Sato | e96636c | 2006-09-27 17:21:02 +0900 | [diff] [blame^] | 29 | memcpy(to, from, n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | return 0; |
| 31 | } |
| 32 | |
Yoshinori Sato | e96636c | 2006-09-27 17:21:02 +0900 | [diff] [blame^] | 33 | __kernel_size_t __clear_user(void *to, __kernel_size_t n) |
| 34 | { |
| 35 | memset(to, 0, n); |
| 36 | return 0; |
| 37 | } |