arch/sh/mm/pg-nommu.c

   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
  17 void copy_page(void *to, void *from)
  18 {
  19         memcpy(to, from, PAGE_SIZE);
  20 }
  21
  22 void clear_page(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 }