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Annotation of Gnu-Mach/linux/dev/include/asm-i386/page.h, revision 1.1.1.1

1.1       root        1: #ifndef _I386_PAGE_H
                      2: #define _I386_PAGE_H
                      3: 
                      4: #ifndef MACH_INCLUDE
                      5: /* PAGE_SHIFT determines the page size */
                      6: #define PAGE_SHIFT     12
                      7: #define PAGE_SIZE      (1UL << PAGE_SHIFT)
                      8: #define PAGE_MASK      (~(PAGE_SIZE-1))
                      9: #endif
                     10: 
                     11: #ifdef __KERNEL__
                     12: 
                     13: #define STRICT_MM_TYPECHECKS
                     14: 
                     15: #ifdef STRICT_MM_TYPECHECKS
                     16: /*
                     17:  * These are used to make use of C type-checking..
                     18:  */
                     19: typedef struct { unsigned long pte; } pte_t;
                     20: typedef struct { unsigned long pmd; } pmd_t;
                     21: typedef struct { unsigned long pgd; } pgd_t;
                     22: typedef struct { unsigned long pgprot; } pgprot_t;
                     23: 
                     24: #define pte_val(x)     ((x).pte)
                     25: #define pmd_val(x)     ((x).pmd)
                     26: #define pgd_val(x)     ((x).pgd)
                     27: #define pgprot_val(x)  ((x).pgprot)
                     28: 
                     29: #define __pte(x)       ((pte_t) { (x) } )
                     30: #define __pmd(x)       ((pmd_t) { (x) } )
                     31: #define __pgd(x)       ((pgd_t) { (x) } )
                     32: #define __pgprot(x)    ((pgprot_t) { (x) } )
                     33: 
                     34: #else
                     35: /*
                     36:  * .. while these make it easier on the compiler
                     37:  */
                     38: typedef unsigned long pte_t;
                     39: typedef unsigned long pmd_t;
                     40: typedef unsigned long pgd_t;
                     41: typedef unsigned long pgprot_t;
                     42: 
                     43: #define pte_val(x)     (x)
                     44: #define pmd_val(x)     (x)
                     45: #define pgd_val(x)     (x)
                     46: #define pgprot_val(x)  (x)
                     47: 
                     48: #define __pte(x)       (x)
                     49: #define __pmd(x)       (x)
                     50: #define __pgd(x)       (x)
                     51: #define __pgprot(x)    (x)
                     52: 
                     53: #endif
                     54: 
                     55: /* to align the pointer to the (next) page boundary */
                     56: #define PAGE_ALIGN(addr)       (((addr)+PAGE_SIZE-1)&PAGE_MASK)
                     57: 
                     58: /* This handles the memory map.. */
                     59: #define PAGE_OFFSET            0
                     60: #define MAP_NR(addr)           (((unsigned long)(addr)) >> PAGE_SHIFT)
                     61: 
                     62: #endif /* __KERNEL__ */
                     63: 
                     64: #endif /* _I386_PAGE_H */

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