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62 lines
1.9 KiB
C
62 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: subsystems/mvdm/ntvdm/cpu/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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#define BOP(num) LOBYTE(EMULATOR_BOP), HIBYTE(EMULATOR_BOP), (num)
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#define UnSimulate16(trap) \
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do { \
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*(PUSHORT)(trap) = EMULATOR_BOP; \
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(trap) += sizeof(USHORT); \
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*(trap) = BOP_UNSIMULATE; \
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} while(0)
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// #define UnSimulate16 MAKELONG(EMULATOR_BOP, BOP_UNSIMULATE) // BOP(BOP_UNSIMULATE)
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#define TRAMPOLINE_SIZE sizeof(ULONGLONG)
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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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ULONG TrampolineSize; // Size of the trampoline zone
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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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VOID
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InitializeContextEx(IN PCALLBACK16 Context,
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IN ULONG TrampolineSize,
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IN USHORT Segment,
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IN USHORT Offset);
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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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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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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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#endif /* _CALLBACK_H_ */
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