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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-arm/] [page.h] - Rev 1774

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#ifndef _ASMARM_PAGE_H
#define _ASMARM_PAGE_H
 
#include <asm/proc/page.h>
 
#define PAGE_SIZE       (1UL << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))
 
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
 
#define STRICT_MM_TYPECHECKS
 
#define clear_page(page)	memzero((void *)(page), PAGE_SIZE)
extern void copy_page(void *to, void *from);
 
#define clear_user_page(page, vaddr)	clear_page(page)
#define copy_user_page(to, from, vaddr)	copy_page(to, from)
 
#ifdef STRICT_MM_TYPECHECKS
/*
 * These are used to make use of C type-checking..
 */
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
 
#define pte_val(x)      ((x).pte)
#define pmd_val(x)      ((x).pmd)
#define pgd_val(x)      ((x).pgd)
#define pgprot_val(x)   ((x).pgprot)
 
#define __pte(x)        ((pte_t) { (x) } )
#define __pmd(x)        ((pmd_t) { (x) } )
#define __pgd(x)        ((pgd_t) { (x) } )
#define __pgprot(x)     ((pgprot_t) { (x) } )
 
#else
/*
 * .. while these make it easier on the compiler
 */
typedef unsigned long pte_t;
typedef unsigned long pmd_t;
typedef unsigned long pgd_t;
typedef unsigned long pgprot_t;
 
#define pte_val(x)      (x)
#define pmd_val(x)      (x)
#define pgd_val(x)      (x)
#define pgprot_val(x)   (x)
 
#define __pte(x)        (x)
#define __pmd(x)        (x)
#define __pgd(x)        (x)
#define __pgprot(x)     (x)
 
#endif
#endif /* !__ASSEMBLY__ */
 
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
#ifndef __ASSEMBLY__
 
#ifdef CONFIG_DEBUG_BUGVERBOSE
extern void __bug(const char *file, int line, void *data);
 
/* give file/line information */
#define BUG()		__bug(__FILE__, __LINE__, NULL)
#define PAGE_BUG(page)	__bug(__FILE__, __LINE__, page)
 
#else
 
/* these just cause an oops */
#define BUG()		(*(int *)0 = 0)
#define PAGE_BUG(page)	(*(int *)0 = 0)
 
#endif
 
/* Pure 2^n version of get_order */
static inline int get_order(unsigned long size)
{
	int order;
 
	size = (size-1) >> (PAGE_SHIFT-1);
	order = -1;
	do {
		size >>= 1;
		order++;
	} while (size);
	return order;
}
 
#endif /* !__ASSEMBLY__ */
 
#include <linux/config.h>
#include <asm/memory.h>
 
#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
#endif /* __KERNEL__ */
 
#endif
 

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