132 lines
2.4 KiB
C
132 lines
2.4 KiB
C
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/*++ BUILD Version: 0000 // Increment this if a change has global effects
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Copyright (c) 1994 Microsoft Corporation
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Module Name:
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xm86.h
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Abstract:
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This module contains the public header file that describes the
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interfaces to the 386/486 real mode emulator.
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Author:
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David N. Cutler (davec) 13-Nov-1994
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Revision History:
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--*/
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#ifndef _XM86_
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#define _XM86_
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//
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// Define internal error codes.
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//
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typedef enum _XM_STATUS {
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XM_SUCCESS = 1,
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XM_DIVIDE_BY_ZERO,
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XM_DIVIDE_QUOTIENT_OVERFLOW,
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XM_EMULATOR_NOT_INITIALIZED,
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XM_HALT_INSTRUCTION,
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XM_ILLEGAL_CODE_SEGMENT,
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XM_ILLEGAL_INDEX_SPECIFIER,
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XM_ILLEGAL_LEVEL_NUMBER,
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XM_ILLEGAL_PORT_NUMBER,
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XM_ILLEGAL_GENERAL_SPECIFIER,
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XM_ILLEGAL_REGISTER_SPECIFIER,
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XM_ILLEGAL_INSTRUCTION_OPCODE,
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XM_INDEX_OUT_OF_BOUNDS,
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XM_SEGMENT_LIMIT_VIOLATION,
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XM_STACK_OVERFLOW,
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XM_STACK_UNDERFLOW,
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XM_MAXIMUM_INTERNAL_CODE
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} XM_STATUS;
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//
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// Define operand data types.
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//
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typedef enum _XM_OPERATION_DATATYPE {
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BYTE_DATA = 0,
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WORD_DATA = 1,
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LONG_DATA = 3
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} XM_OPERATION_DATATYPE;
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//
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// Define emulator context structure.
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//
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typedef struct _XM86_CONTEXT {
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ULONG Eax;
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ULONG Ecx;
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ULONG Edx;
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ULONG Ebx;
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ULONG Ebp;
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ULONG Esi;
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ULONG Edi;
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USHORT SegDs;
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USHORT SegEs;
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} XM86_CONTEXT, *PXM86_CONTEXT;
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//
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// Define address translation callback function type.
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//
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typedef
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PVOID
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(*PXM_TRANSLATE_ADDRESS) (
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IN USHORT Segment,
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IN USHORT Offset
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);
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//
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// Define read and write I/O space callback function types.
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//
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typedef
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ULONG
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(*PXM_READ_IO_SPACE) (
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IN XM_OPERATION_DATATYPE DataType,
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IN USHORT PortNumber
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);
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typedef
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VOID
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(*PXM_WRITE_IO_SPACE) (
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IN XM_OPERATION_DATATYPE DataType,
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IN USHORT PortNumber,
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IN ULONG Value
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);
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//
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// Define emulator public interface function prototypes.
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//
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XM_STATUS
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XmEmulateFarCall (
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IN USHORT Segment,
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IN USHORT Offset,
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IN OUT PXM86_CONTEXT Context
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);
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XM_STATUS
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XmEmulateInterrupt (
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IN UCHAR Interrupt,
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IN OUT PXM86_CONTEXT Context
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);
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VOID
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XmInitializeEmulator (
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IN USHORT StackSegment,
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IN USHORT StackOffset,
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IN PXM_READ_IO_SPACE ReadIoSpace,
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IN PXM_WRITE_IO_SPACE WriteIoSpace,
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IN PXM_TRANSLATE_ADDRESS TranslateAddress
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);
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#endif // _XM86_
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