reactos/subsystems/mvdm/ntvdm/memory.h

   1 /*
   2  * COPYRIGHT:       GPLv2+ - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            memory.h
   5  * PURPOSE:         Memory Management
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 #ifndef _MEMORY_H_
  10 #define _MEMORY_H_
  11
  12 /* DEFINITIONS ****************************************************************/
  13
  14 #define TOTAL_PAGES (MAX_ADDRESS / PAGE_SIZE)
  15
  16 typedef VOID
  17 (FASTCALL *PMEMORY_READ_HANDLER)
  18 (
  19     ULONG Address,
  20     PVOID Buffer,
  21     ULONG Size
  22 );
  23
  24 typedef BOOLEAN
  25 (FASTCALL *PMEMORY_WRITE_HANDLER)
  26 (
  27     ULONG Address,
  28     PVOID Buffer,
  29     ULONG Size
  30 );
  31
  32 /* FUNCTIONS ******************************************************************/
  33
  34 BOOLEAN MemInitialize(VOID);
  35 VOID MemCleanup(VOID);
  36 VOID MemExceptionHandler(ULONG FaultAddress, BOOLEAN Writing);
  37
  38 VOID
  39 FASTCALL
  40 EmulatorReadMemory
  41 (
  42     PFAST486_STATE State,
  43     ULONG Address,
  44     PVOID Buffer,
  45     ULONG Size
  46 );
  47
  48 VOID
  49 FASTCALL
  50 EmulatorWriteMemory
  51 (
  52     PFAST486_STATE State,
  53     ULONG Address,
  54     PVOID Buffer,
  55     ULONG Size
  56 );
  57
  58 VOID EmulatorSetA20(BOOLEAN Enabled);
  59 BOOLEAN EmulatorGetA20(VOID);
  60
  61 BOOL
  62 MemInstallFastMemoryHook
  63 (
  64     PVOID Address,
  65     ULONG Size,
  66     PMEMORY_READ_HANDLER ReadHandler,
  67     PMEMORY_WRITE_HANDLER WriteHandler
  68 );
  69
  70 BOOL
  71 MemRemoveFastMemoryHook
  72 (
  73     PVOID Address,
  74     ULONG Size
  75 );
  76
  77 BOOLEAN
  78 MemQueryMemoryZone
  79 (
  80     ULONG StartAddress,
  81     PULONG Length,
  82     PBOOLEAN Hooked
  83 );
  84
  85 #endif // _MEMORY_H_
  86
  87 /* EOF */