reactos/subsystems/mvdm/ntvdm/cpu/cpu.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            subsystems/mvdm/ntvdm/cpu/cpu.h
   5  * PURPOSE:         Minimal x86 machine emulator for the VDM
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 #ifndef _CPU_H_
  10 #define _CPU_H_
  11
  12 /* INCLUDES *******************************************************************/
  13
  14 #include <fast486.h>
  15
  16 /* DEFINES ********************************************************************/
  17
  18 /* FLAGS */
  19 #define EMULATOR_FLAG_CF    (1 << 0)
  20 #define EMULATOR_FLAG_PF    (1 << 2)
  21 #define EMULATOR_FLAG_AF    (1 << 4)
  22 #define EMULATOR_FLAG_ZF    (1 << 6)
  23 #define EMULATOR_FLAG_SF    (1 << 7)
  24 #define EMULATOR_FLAG_TF    (1 << 8)
  25 #define EMULATOR_FLAG_IF    (1 << 9)
  26 #define EMULATOR_FLAG_DF    (1 << 10)
  27 #define EMULATOR_FLAG_OF    (1 << 11)
  28 #define EMULATOR_FLAG_NT    (1 << 14)
  29 #define EMULATOR_FLAG_RF    (1 << 16)
  30 #define EMULATOR_FLAG_VM    (1 << 17)
  31 #define EMULATOR_FLAG_AC    (1 << 18)
  32 #define EMULATOR_FLAG_VIF   (1 << 19)
  33 #define EMULATOR_FLAG_VIP   (1 << 20)
  34 #define EMULATOR_FLAG_ID    (1 << 21)
  35
  36 #if 0
  37 enum
  38 {
  39     EMULATOR_EXCEPTION_DIVISION_BY_ZERO,
  40     EMULATOR_EXCEPTION_DEBUG,
  41     EMULATOR_EXCEPTION_NMI,
  42     EMULATOR_EXCEPTION_BREAKPOINT,
  43     EMULATOR_EXCEPTION_OVERFLOW,
  44     EMULATOR_EXCEPTION_BOUND,
  45     EMULATOR_EXCEPTION_INVALID_OPCODE,
  46     EMULATOR_EXCEPTION_NO_FPU,
  47     EMULATOR_EXCEPTION_DOUBLE_FAULT,
  48     EMULATOR_EXCEPTION_FPU_SEGMENT,
  49     EMULATOR_EXCEPTION_INVALID_TSS,
  50     EMULATOR_EXCEPTION_NO_SEGMENT,
  51     EMULATOR_EXCEPTION_STACK_SEGMENT,
  52     EMULATOR_EXCEPTION_GPF,
  53     EMULATOR_EXCEPTION_PAGE_FAULT
  54 };
  55 #endif
  56
  57 extern BOOLEAN CpuRunning;
  58 extern FAST486_STATE EmulatorContext;
  59
  60 /* FUNCTIONS ******************************************************************/
  61
  62 #if 0
  63 VOID EmulatorException(BYTE ExceptionNumber, LPWORD Stack);
  64 #endif
  65
  66 VOID CpuExecute(WORD Segment, WORD Offset);
  67 VOID CpuStep(VOID);
  68 VOID CpuSimulate(VOID);
  69 VOID CpuUnsimulate(VOID);
  70 #if 0
  71 VOID EmulatorTerminate(VOID);
  72 #endif
  73
  74 BOOLEAN CpuInitialize(VOID);
  75 VOID CpuCleanup(VOID);
  76
  77 #endif // _CPU_H_
  78
  79 /* EOF */