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Linux/arch/x86/include/asm/page_32.h

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

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