arch/x86/include/asm/page_32.h

   1 #ifndef _ASM_X86_PAGE_32_H
   2 #define _ASM_X86_PAGE_32_H
   3
   4 #include <asm/page_32_types.h>
   5
   6 #ifndef __ASSEMBLY__
   7
   8 #ifdef CONFIG_HUGETLB_PAGE
   9 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
  10 #endif
  11
  12 #define __phys_addr_nodebug(x)  ((x) - PAGE_OFFSET)
  13 #ifdef CONFIG_DEBUG_VIRTUAL
  14 extern unsigned long __phys_addr(unsigned long);
  15 #else
  16 #define __phys_addr(x)          __phys_addr_nodebug(x)
  17 #endif
  18 #define __phys_addr_symbol(x)   __phys_addr(x)
  19 #define __phys_reloc_hide(x)    RELOC_HIDE((x), 0)
  20
  21 #ifdef CONFIG_FLATMEM
  22 #define pfn_valid(pfn)          ((pfn) < max_mapnr)
  23 #endif /* CONFIG_FLATMEM */
  24
  25 #ifdef CONFIG_X86_USE_3DNOW
  26 #include <asm/mmx.h>
  27
  28 static inline void clear_page(void *page)
  29 {
  30         mmx_clear_page(page);
  31 }
  32
  33 static inline void copy_page(void *to, void *from)
  34 {
  35         mmx_copy_page(to, from);
  36 }
  37 #else  /* !CONFIG_X86_USE_3DNOW */
  38 #include <linux/string.h>
  39
  40 static inline void clear_page(void *page)
  41 {
  42         memset(page, 0, PAGE_SIZE);
  43 }
  44
  45 static inline void copy_page(void *to, void *from)
  46 {
  47         memcpy(to, from, PAGE_SIZE);
  48 }
  49 #endif  /* CONFIG_X86_3DNOW */
  50 #endif  /* !__ASSEMBLY__ */
  51
  52 #endif /* _ASM_X86_PAGE_32_H */