2 * COPYRIGHT: GPL - See COPYING in the top level directory
3 * PROJECT: ReactOS Virtual DOS Machine
5 * PURPOSE: Minimal x86 machine emulator for the VDM (header file)
6 * PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
12 /* INCLUDES *******************************************************************/
17 /* DEFINES ********************************************************************/
20 #define EMULATOR_FLAG_CF (1 << 0)
21 #define EMULATOR_FLAG_PF (1 << 2)
22 #define EMULATOR_FLAG_AF (1 << 4)
23 #define EMULATOR_FLAG_ZF (1 << 6)
24 #define EMULATOR_FLAG_SF (1 << 7)
25 #define EMULATOR_FLAG_TF (1 << 8)
26 #define EMULATOR_FLAG_IF (1 << 9)
27 #define EMULATOR_FLAG_DF (1 << 10)
28 #define EMULATOR_FLAG_OF (1 << 11)
29 #define EMULATOR_FLAG_NT (1 << 14)
30 #define EMULATOR_FLAG_RF (1 << 16)
31 #define EMULATOR_FLAG_VM (1 << 17)
32 #define EMULATOR_FLAG_AC (1 << 18)
33 #define EMULATOR_FLAG_VIF (1 << 19)
34 #define EMULATOR_FLAG_VIP (1 << 20)
35 #define EMULATOR_FLAG_ID (1 << 21)
37 /* Common definitions */
38 #define EMULATOR_BOP 0xC4C4
39 #define EMULATOR_INT_BOP 0xFF
40 #define EMULATOR_MAX_BOP_NUM 0xFF + 1
42 #define STACK_COUNTER 0
43 #define STACK_INT_NUM 1
50 EMULATOR_EXCEPTION_DIVISION_BY_ZERO
,
51 EMULATOR_EXCEPTION_DEBUG
,
52 EMULATOR_EXCEPTION_NMI
,
53 EMULATOR_EXCEPTION_BREAKPOINT
,
54 EMULATOR_EXCEPTION_OVERFLOW
,
55 EMULATOR_EXCEPTION_BOUND
,
56 EMULATOR_EXCEPTION_INVALID_OPCODE
,
57 EMULATOR_EXCEPTION_NO_FPU
,
58 EMULATOR_EXCEPTION_DOUBLE_FAULT
,
59 EMULATOR_EXCEPTION_FPU_SEGMENT
,
60 EMULATOR_EXCEPTION_INVALID_TSS
,
61 EMULATOR_EXCEPTION_NO_SEGMENT
,
62 EMULATOR_EXCEPTION_STACK_SEGMENT
,
63 EMULATOR_EXCEPTION_GPF
,
64 EMULATOR_EXCEPTION_PAGE_FAULT
85 extern FAST486_STATE EmulatorContext
;
87 /* FUNCTIONS ******************************************************************/
89 VOID WINAPI EmulatorReadMemory
97 VOID WINAPI EmulatorWriteMemory
105 VOID WINAPI EmulatorReadIo
107 PFAST486_STATE State
,
114 VOID WINAPI EmulatorWriteIo
116 PFAST486_STATE State
,
123 VOID WINAPI EmulatorBiosOperation
125 PFAST486_STATE State
,
129 UCHAR WINAPI EmulatorIntAcknowledge
134 BOOLEAN
EmulatorInitialize(VOID
);
135 VOID
EmulatorSetStack(WORD Segment
, DWORD Offset
);
136 VOID
EmulatorExecute(WORD Segment
, WORD Offset
);
137 VOID
EmulatorInterrupt(BYTE Number
);
138 VOID
EmulatorInterruptSignal(VOID
);
139 ULONG
EmulatorGetRegister(ULONG Register
);
140 ULONG
EmulatorGetProgramCounter(VOID
);
141 VOID
EmulatorSetRegister(ULONG Register
, ULONG Value
);
142 BOOLEAN
EmulatorGetFlag(ULONG Flag
);
143 VOID
EmulatorSetFlag(ULONG Flag
);
144 VOID
EmulatorClearFlag(ULONG Flag
);
145 VOID
EmulatorStep(VOID
);
146 VOID
EmulatorCleanup(VOID
);
147 VOID
EmulatorSetA20(BOOLEAN Enabled
);
149 #endif // _EMULATOR_H_