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80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: subsystems/mvdm/ntvdm/cpu/cpu.h
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* PURPOSE: Minimal x86 machine emulator for the VDM
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#ifndef _CPU_H_
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#define _CPU_H_
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/* INCLUDES *******************************************************************/
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#include <fast486.h>
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/* DEFINES ********************************************************************/
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/* FLAGS */
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#define EMULATOR_FLAG_CF (1 << 0)
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#define EMULATOR_FLAG_PF (1 << 2)
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#define EMULATOR_FLAG_AF (1 << 4)
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#define EMULATOR_FLAG_ZF (1 << 6)
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#define EMULATOR_FLAG_SF (1 << 7)
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#define EMULATOR_FLAG_TF (1 << 8)
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#define EMULATOR_FLAG_IF (1 << 9)
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#define EMULATOR_FLAG_DF (1 << 10)
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#define EMULATOR_FLAG_OF (1 << 11)
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#define EMULATOR_FLAG_NT (1 << 14)
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#define EMULATOR_FLAG_RF (1 << 16)
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#define EMULATOR_FLAG_VM (1 << 17)
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#define EMULATOR_FLAG_AC (1 << 18)
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#define EMULATOR_FLAG_VIF (1 << 19)
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#define EMULATOR_FLAG_VIP (1 << 20)
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#define EMULATOR_FLAG_ID (1 << 21)
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#if 0
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enum
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{
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EMULATOR_EXCEPTION_DIVISION_BY_ZERO,
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EMULATOR_EXCEPTION_DEBUG,
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EMULATOR_EXCEPTION_NMI,
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EMULATOR_EXCEPTION_BREAKPOINT,
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EMULATOR_EXCEPTION_OVERFLOW,
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EMULATOR_EXCEPTION_BOUND,
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EMULATOR_EXCEPTION_INVALID_OPCODE,
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EMULATOR_EXCEPTION_NO_FPU,
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EMULATOR_EXCEPTION_DOUBLE_FAULT,
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EMULATOR_EXCEPTION_FPU_SEGMENT,
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EMULATOR_EXCEPTION_INVALID_TSS,
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EMULATOR_EXCEPTION_NO_SEGMENT,
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EMULATOR_EXCEPTION_STACK_SEGMENT,
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EMULATOR_EXCEPTION_GPF,
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EMULATOR_EXCEPTION_PAGE_FAULT
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};
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#endif
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extern BOOLEAN CpuRunning;
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extern FAST486_STATE EmulatorContext;
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/* FUNCTIONS ******************************************************************/
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#if 0
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VOID EmulatorException(BYTE ExceptionNumber, LPWORD Stack);
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#endif
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VOID CpuExecute(WORD Segment, WORD Offset);
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VOID CpuStep(VOID);
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VOID CpuSimulate(VOID);
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VOID CpuUnsimulate(VOID);
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#if 0
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VOID EmulatorTerminate(VOID);
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#endif
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BOOLEAN CpuInitialize(VOID);
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VOID CpuCleanup(VOID);
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#endif // _CPU_H_
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/* EOF */
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