reactos/ntoskrnl/include/internal/amd64/mm.h

   1 /*
   2  * Lowlevel memory managment definitions
   3  */
   4
   5 #ifndef __NTOSKRNL_INCLUDE_INTERNAL_AMD64_MM_H
   6 #define __NTOSKRNL_INCLUDE_INTERNAL_AMD64_MM_H
   7
   8 struct _EPROCESS;
   9
  10 PULONG64
  11 FORCEINLINE
  12 MmGetPageDirectory(VOID)
  13 {
  14     return (PULONG64)__readcr3();
  15 }
  16
  17 #define PAGE_MASK(x)            ((x)&(~0xfff))
  18 #define PAE_PAGE_MASK(x)        ((x)&(~0xfffLL))
  19
  20 /* Base addresses of PTE and PDE */
  21 //#define PAGETABLE_MAP       PTE_BASE
  22 //#define PAGEDIRECTORY_MAP   (0xc0000000 + (PAGETABLE_MAP / (1024)))
  23
  24 /* Converting address to a corresponding PDE or PTE entry */
  25 #define MiAddressToPxe(x) \
  26     ((PMMPTE)(((((ULONG64)(x)) >> PXI_SHIFT) << 3) + PXE_BASE))
  27 #define MiAddressToPpe(x) \
  28     ((PMMPTE)(((((ULONG64)(x)) >> PPI_SHIFT) << 3) + PPE_BASE))
  29 #define MiAddressToPde(x) \
  30     ((PMMPTE)(((((ULONG64)(x)) >> PDI_SHIFT) << 3) + PDE_BASE))
  31 #define MiAddressToPte(x) \
  32     ((PMMPTE)(((((ULONG64)(x)) >> PTI_SHIFT) << 3) + PTE_BASE))
  33
  34 /* Convert a PTE into a corresponding address */
  35 #define MiPteToAddress(PTE) ((PVOID)((ULONG64)(PTE) << 9))
  36
  37 //#define ADDR_TO_PAGE_TABLE(v) (((ULONG)(v)) / (1024 * PAGE_SIZE))
  38 //#define ADDR_TO_PDE_OFFSET(v) ((((ULONG)(v)) / (1024 * PAGE_SIZE)))
  39 //#define ADDR_TO_PTE_OFFSET(v)  ((((ULONG)(v)) % (1024 * PAGE_SIZE)) / PAGE_SIZE)
  40
  41 #define VAtoPXI(va) ((((ULONG64)va) >> PXI_SHIFT) & 0x1FF)
  42 #define VAtoPPI(va) ((((ULONG64)va) >> PPI_SHIFT) & 0x1FF)
  43 #define VAtoPDI(va) ((((ULONG64)va) >> PDI_SHIFT) & 0x1FF)
  44 #define VAtoPTI(va) ((((ULONG64)va) >> PTI_SHIFT) & 0x1FF)
  45
  46
  47 /* Easy accessing PFN in PTE */
  48 #define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
  49
  50 // FIXME, only copied from x86
  51 #define MI_MAKE_LOCAL_PAGE(x)      ((x)->u.Hard.Global = 0)
  52 #define MI_MAKE_DIRTY_PAGE(x)      ((x)->u.Hard.Dirty = 1)
  53 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.CacheDisable = 1)
  54 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.WriteThrough = 1)
  55 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.WriteThrough = 0)
  56 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Write == 1)
  57 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
  58 #define MI_IS_PAGE_DIRTY(x)        ((x)->u.Hard.Dirty == 1)
  59
  60 #endif /* __NTOSKRNL_INCLUDE_INTERNAL_AMD64_MM_H */