LXR linux/arch/arm/include/asm/page-nommu.h

   1/*
   2 *  arch/arm/include/asm/page-nommu.h
   3 *
   4 *  Copyright (C) 2004 Hyok S. Choi
   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
  11#ifndef _ASMARM_PAGE_NOMMU_H
  12#define _ASMARM_PAGE_NOMMU_H
  13
  14#if !defined(CONFIG_SMALL_TASKS) && PAGE_SHIFT < 13
  15#define KTHREAD_SIZE (8192)
  16#else
  17#define KTHREAD_SIZE PAGE_SIZE
  18#endif
  19 
  20#define get_user_page(vaddr)            __get_free_page(GFP_KERNEL)
  21#define free_user_page(page, addr)      free_page(addr)
  22
  23#define clear_page(page)        memset((page), 0, PAGE_SIZE)
  24#define copy_page(to,from)      memcpy((to), (from), PAGE_SIZE)
  25
  26#define clear_user_page(page, vaddr, pg)        clear_page(page)
  27#define copy_user_page(to, from, vaddr, pg)     copy_page(to, from)
  28
  29/*
  30 * These are used to make use of C type-checking..
  31 */
  32typedef unsigned long pte_t;
  33typedef unsigned long pmd_t;
  34typedef unsigned long pgd_t[2];
  35typedef unsigned long pgprot_t;
  36
  37#define pte_val(x)      (x)
  38#define pmd_val(x)      (x)
  39#define pgd_val(x)      ((x)[0])
  40#define pgprot_val(x)   (x)
  41
  42#define __pte(x)        (x)
  43#define __pmd(x)        (x)
  44#define __pgprot(x)     (x)
  45
  46#endif
  47