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86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/*
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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: emulator.h
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* PURPOSE: Minimal x86 machine emulator for the VDM (header file)
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#ifndef _EMULATOR_H_
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#define _EMULATOR_H_
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/* INCLUDES *******************************************************************/
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#include "ntvdm.h"
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#include <softx86/softx86.h>
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#include <softx86/softx87.h>
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/* DEFINES ********************************************************************/
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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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#define SPECIAL_INT_NUM 0xFF
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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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};
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typedef enum
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{
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EMULATOR_REG_AX,
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EMULATOR_REG_CX,
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EMULATOR_REG_DX,
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EMULATOR_REG_BX,
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EMULATOR_REG_SI,
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EMULATOR_REG_DI,
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EMULATOR_REG_SP,
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EMULATOR_REG_BP,
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EMULATOR_REG_ES,
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EMULATOR_REG_CS,
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EMULATOR_REG_SS,
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EMULATOR_REG_DS,
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} EMULATOR_REGISTER;
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/* FUNCTIONS ******************************************************************/
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BOOLEAN EmulatorInitialize();
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VOID EmulatorSetStack(WORD Segment, WORD Offset);
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VOID EmulatorExecute(WORD Segment, WORD Offset);
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VOID EmulatorInterrupt(BYTE Number);
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VOID EmulatorExternalInterrupt(BYTE Number);
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ULONG EmulatorGetRegister(ULONG Register);
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VOID EmulatorSetRegister(ULONG Register, ULONG Value);
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BOOLEAN EmulatorGetFlag(ULONG Flag);
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VOID EmulatorSetFlag(ULONG Flag);
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VOID EmulatorClearFlag(ULONG Flag);
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VOID EmulatorStep();
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VOID EmulatorCleanup();
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VOID EmulatorSetA20(BOOLEAN Enabled);
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#endif
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/* EOF */
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