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36 lines
1 KiB
C
36 lines
1 KiB
C
/*
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* Lowlevel memory managment definitions
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*/
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#ifndef __NTOSKRNL_INCLUDE_INTERNAL_I386_MM_H
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#define __NTOSKRNL_INCLUDE_INTERNAL_I386_MM_H
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#ifdef _M_IX86
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struct _EPROCESS;
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PULONG MmGetPageDirectory(VOID);
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#define PAGE_MASK(x) ((x)&(~0xfff))
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#define PAE_PAGE_MASK(x) ((x)&(~0xfffLL))
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/* Base addresses of PTE and PDE */
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#define PAGETABLE_MAP (0xc0000000)
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#define PAGEDIRECTORY_MAP (0xc0000000 + (PAGETABLE_MAP / (1024)))
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/* Converting address to a corresponding PDE or PTE entry */
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#define MiAddressToPde(x) \
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((PMMPTE)(((((ULONG)(x)) >> 22) << 2) + PAGEDIRECTORY_MAP))
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#define MiAddressToPte(x) \
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((PMMPTE)(((((ULONG)(x)) >> 12) << 2) + PAGETABLE_MAP))
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#define ADDR_TO_PAGE_TABLE(v) (((ULONG)(v)) / (1024 * PAGE_SIZE))
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#define ADDR_TO_PDE_OFFSET(v) ((((ULONG)(v)) / (1024 * PAGE_SIZE)))
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#define ADDR_TO_PTE_OFFSET(v) ((((ULONG)(v)) % (1024 * PAGE_SIZE)) / PAGE_SIZE)
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/* Easy accessing PFN in PTE */
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#define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
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#endif
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#endif /* __NTOSKRNL_INCLUDE_INTERNAL_I386_MM_H */
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