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4179d7890c
- Reduce the size of the trampoline needed to perform 32 ---> 16 bit callbacks. - Fix some comments, improve DPRINTs. svn path=/branches/ntvdm/; revision=62331
76 lines
1.9 KiB
C
76 lines
1.9 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: callback.h
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* PURPOSE: 32-bit Interrupt Handlers
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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* Hermes Belusca-Maito (hermes.belusca@sfr.fr)
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*/
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#ifndef _CALLBACK_H_
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#define _CALLBACK_H_
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/* DEFINES ********************************************************************/
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/* 32-bit Interrupt Identifiers */
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#define EMULATOR_MAX_INT32_NUM 0xFF + 1
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#define INT_HANDLER_OFFSET 0x1000
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#define COMMON_STUB_OFFSET 0x2000
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typedef struct _CALLBACK16
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{
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ULONG TrampolineFarPtr; // Where the trampoline zone is placed
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USHORT Segment;
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USHORT NextOffset;
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} CALLBACK16, *PCALLBACK16;
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/* FUNCTIONS ******************************************************************/
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typedef VOID (WINAPI *EMULATOR_INT32_PROC)(LPWORD Stack);
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VOID
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InitializeContext(IN PCALLBACK16 Context,
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IN USHORT Segment,
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IN USHORT Offset);
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VOID
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Call16(IN USHORT Segment,
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IN USHORT Offset);
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ULONG
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RegisterCallback16(IN ULONG FarPtr,
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IN LPBYTE CallbackCode,
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IN SIZE_T CallbackSize,
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OUT PSIZE_T CodeSize OPTIONAL);
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VOID
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RunCallback16(IN PCALLBACK16 Context,
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IN ULONG FarPtr);
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ULONG
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RegisterInt16(IN ULONG FarPtr,
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IN BYTE IntNumber,
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IN LPBYTE CallbackCode,
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IN SIZE_T CallbackSize,
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OUT PSIZE_T CodeSize OPTIONAL);
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ULONG
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RegisterInt32(IN ULONG FarPtr,
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IN BYTE IntNumber,
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IN EMULATOR_INT32_PROC IntHandler,
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OUT PSIZE_T CodeSize OPTIONAL);
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VOID
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Int32Call(IN PCALLBACK16 Context,
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IN BYTE IntNumber);
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VOID WINAPI Int32Dispatch(LPWORD Stack);
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VOID InitializeCallbacks(VOID);
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#endif // _CALLBACK_H_
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/* EOF */
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