/* INCLUDES *******************************************************************/
#include "ntvdm.h"
-
-#ifndef NEW_EMULATOR
-#include <softx86/softx86.h>
-#include <softx86/softx87.h>
-#endif
+#include <fast486.h>
/* DEFINES ********************************************************************/
#define EMULATOR_FLAG_VIP (1 << 20)
#define EMULATOR_FLAG_ID (1 << 21)
-/* CR0 */
-#define EMULATOR_CR0_PE (1 << 0)
-#define EMULATOR_CR0_MP (1 << 1)
-#define EMULATOR_CR0_EM (1 << 2)
-#define EMULATOR_CR0_TS (1 << 3)
-#define EMULATOR_CR0_ET (1 << 4)
-#define EMULATOR_CR0_NE (1 << 5)
-#define EMULATOR_CR0_WP (1 << 16)
-#define EMULATOR_CR0_AM (1 << 18)
-#define EMULATOR_CR0_NW (1 << 29)
-#define EMULATOR_CR0_CD (1 << 30)
-#define EMULATOR_CR0_PG (1 << 31)
-
-/* GDT Access byte */
-#define GDT_SEG_ACCESSED (1 << 0)
-#define GDT_DATA_WRITEABLE (1 << 1)
-#define GDT_CODE_READABLE (1 << 1)
-#define GDT_CONFORMING (1 << 2)
-#define GDT_DIRECTION (1 << 2)
-#define GDT_CODE_SEGMENT (1 << 3)
-#define GDT_PRESENT (1 << 7)
-
-/* GDT flags */
-#define GDT_32BIT_SEGMENT (1 << 2)
-#define GDT_PAGE_GRANULARITY (1 << 3)
-
/* Common definitions */
-#define EMULATOR_NUM_GENERAL_REGS 8
-#define EMULATOR_NUM_SEGMENT_REGS 6
-#define EMULATOR_NUM_CONTROL_REGS 8
-#define EMULATOR_NUM_DEBUG_REGS 8
-#define MAX_GDT_ENTRIES 8192
-#define EMULATOR_BOP 0xC4C4
-#define EMULATOR_INT_BOP 0xBEEF
-#define STACK_INT_NUM 0
-#define STACK_IP 1
-#define STACK_CS 2
-#define STACK_FLAGS 3
+#define EMULATOR_BOP 0xC4C4
+#define EMULATOR_INT_BOP 0xFF
+#define EMULATOR_MAX_BOP_NUM 0xFF + 1
+
+#define STACK_COUNTER 0
+#define STACK_INT_NUM 1
+#define STACK_IP 2
+#define STACK_CS 3
+#define STACK_FLAGS 4
enum
{
EMULATOR_REG_GS
};
-typedef union
-{
- struct
- {
- BYTE LowByte;
- BYTE HighByte;
- };
- WORD LowWord;
- DWORD Long;
-} EMULATOR_REGISTER, *PEMULATOR_REGISTER;
-
-typedef struct
-{
- ULONG Limit : 16;
- ULONG Base : 24;
- ULONG AccessByte : 8;
- ULONG LimitHigh : 4;
- ULONG Flags : 4;
- ULONG BaseHigh : 8;
-} EMULATOR_GDT_ENTRY;
-
-typedef struct
-{
- ULONG Offset : 16;
- ULONG Selector : 16;
- ULONG Zero : 8;
- ULONG TypeAndAttributes : 8;
- ULONG OffsetHigh : 16;
-} EMULATOR_IDT_ENTRY;
-
-typedef struct
-{
- WORD Size;
- DWORD Address;
-} EMULATOR_TABLE_REGISTER;
-
-typedef struct
-{
- EMULATOR_REGISTER Registers[EMULATOR_NUM_GENERAL_REGS
- + EMULATOR_NUM_SEGMENT_REGS];
- EMULATOR_REGISTER Flags;
- EMULATOR_REGISTER InstructionPointer;
- EMULATOR_REGISTER ControlRegisters[EMULATOR_NUM_CONTROL_REGS];
- EMULATOR_REGISTER DebugRegisters[EMULATOR_NUM_DEBUG_REGS];
- ULONGLONG TimeStampCounter;
- BOOLEAN OperandSizeOverload;
- BOOLEAN AddressSizeOverload;
- EMULATOR_TABLE_REGISTER Gdtr, Idtr;
- EMULATOR_GDT_ENTRY CachedDescriptors[EMULATOR_NUM_SEGMENT_REGS];
- UINT ExceptionCount;
-} EMULATOR_CONTEXT, *PEMULATOR_CONTEXT;
-
-typedef VOID (*EMULATOR_OPCODE_HANDLER)(PEMULATOR_CONTEXT Context, BYTE Opcode);
+extern FAST486_STATE EmulatorContext;
/* FUNCTIONS ******************************************************************/
-BOOLEAN EmulatorInitialize();
-VOID EmulatorSetStack(WORD Segment, WORD Offset);
+VOID WINAPI EmulatorReadMemory
+(
+ PFAST486_STATE State,
+ ULONG Address,
+ PVOID Buffer,
+ ULONG Size
+);
+
+VOID WINAPI EmulatorWriteMemory
+(
+ PFAST486_STATE State,
+ ULONG Address,
+ PVOID Buffer,
+ ULONG Size
+);
+
+VOID WINAPI EmulatorReadIo
+(
+ PFAST486_STATE State,
+ ULONG Port,
+ PVOID Buffer,
+ ULONG DataCount,
+ UCHAR DataSize
+);
+
+VOID WINAPI EmulatorWriteIo
+(
+ PFAST486_STATE State,
+ ULONG Port,
+ PVOID Buffer,
+ ULONG DataCount,
+ UCHAR DataSize
+);
+
+VOID WINAPI EmulatorBiosOperation
+(
+ PFAST486_STATE State,
+ UCHAR BopCode
+);
+
+UCHAR WINAPI EmulatorIntAcknowledge
+(
+ PFAST486_STATE State
+);
+
+BOOLEAN EmulatorInitialize(VOID);
+VOID EmulatorSetStack(WORD Segment, DWORD Offset);
VOID EmulatorExecute(WORD Segment, WORD Offset);
VOID EmulatorInterrupt(BYTE Number);
-VOID EmulatorExternalInterrupt(BYTE Number);
+VOID EmulatorInterruptSignal(VOID);
ULONG EmulatorGetRegister(ULONG Register);
+ULONG EmulatorGetProgramCounter(VOID);
VOID EmulatorSetRegister(ULONG Register, ULONG Value);
BOOLEAN EmulatorGetFlag(ULONG Flag);
VOID EmulatorSetFlag(ULONG Flag);
VOID EmulatorClearFlag(ULONG Flag);
-VOID EmulatorStep();
-VOID EmulatorCleanup();
+VOID EmulatorStep(VOID);
+VOID EmulatorCleanup(VOID);
VOID EmulatorSetA20(BOOLEAN Enabled);
-#endif
+#endif // _EMULATOR_H_
/* EOF */
-