page-nommu.h 1.3 KB

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  1. /*
  2. * linux/include/asm-arm/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. #ifndef _ASMARM_PAGE_NOMMU_H
  11. #define _ASMARM_PAGE_NOMMU_H
  12. #if !defined(CONFIG_SMALL_TASKS) && PAGE_SHIFT < 13
  13. #define KTHREAD_SIZE (8192)
  14. #else
  15. #define KTHREAD_SIZE PAGE_SIZE
  16. #endif
  17. #define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
  18. #define free_user_page(page, addr) free_page(addr)
  19. #define clear_page(page) memset((page), 0, PAGE_SIZE)
  20. #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
  21. #define clear_user_page(page, vaddr, pg) clear_page(page)
  22. #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
  23. /*
  24. * These are used to make use of C type-checking..
  25. */
  26. typedef unsigned long pte_t;
  27. typedef unsigned long pmd_t;
  28. typedef unsigned long pgd_t[2];
  29. typedef unsigned long pgprot_t;
  30. #define pte_val(x) (x)
  31. #define pmd_val(x) (x)
  32. #define pgd_val(x) ((x)[0])
  33. #define pgprot_val(x) (x)
  34. #define __pte(x) (x)
  35. #define __pmd(x) (x)
  36. #define __pgprot(x) (x)
  37. /* to align the pointer to the (next) page boundary */
  38. #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
  39. extern unsigned long memory_start;
  40. extern unsigned long memory_end;
  41. #endif