mirror of
https://github.com/reactos/reactos.git
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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS NT Library
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* FILE: lib/ntdll/main/dispatch.c
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* PURPOSE: User-Mode NT Dispatchers
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* PROGRAMERS: Alex Ionescu (alex@relsoft.net)
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* David Welch <welch@cwcom.net>
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*/
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/* INCLUDES *****************************************************************/
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#include <ntdll.h>
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#define NDEBUG
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#include <debug.h>
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typedef NTSTATUS (NTAPI *USER_CALL)(PVOID Argument, ULONG ArgumentLength);
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EXCEPTION_DISPOSITION NTAPI
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RtlpExecuteVectoredExceptionHandlers(IN PEXCEPTION_RECORD ExceptionRecord,
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IN PCONTEXT Context);
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/* FUNCTIONS ****************************************************************/
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KiUserExceptionDispatcher(PEXCEPTION_RECORD ExceptionRecord,
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PCONTEXT Context)
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{
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EXCEPTION_RECORD NestedExceptionRecord;
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NTSTATUS Status;
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/* call the vectored exception handlers */
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if(RtlpExecuteVectoredExceptionHandlers(ExceptionRecord,
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Context) != ExceptionContinueExecution)
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{
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goto ContinueExecution;
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}
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else
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{
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/* Dispatch the exception and check the result */
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if(RtlDispatchException(ExceptionRecord, Context))
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{
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ContinueExecution:
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/* Continue executing */
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Status = NtContinue(Context, FALSE);
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}
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else
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{
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/* Raise an exception */
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Status = NtRaiseException(ExceptionRecord, Context, FALSE);
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}
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}
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/* Setup the Exception record */
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NestedExceptionRecord.ExceptionCode = Status;
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NestedExceptionRecord.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
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NestedExceptionRecord.ExceptionRecord = ExceptionRecord;
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NestedExceptionRecord.NumberParameters = Status;
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/* Raise the exception */
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RtlRaiseException(&NestedExceptionRecord);
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}
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KiRaiseUserExceptionDispatcher(VOID)
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{
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EXCEPTION_RECORD ExceptionRecord;
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/* Setup the exception record */
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ExceptionRecord.ExceptionCode = ((PTEB)NtCurrentTeb())->ExceptionCode;
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ExceptionRecord.ExceptionFlags = 0;
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ExceptionRecord.ExceptionRecord = NULL;
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ExceptionRecord.NumberParameters = 0;
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/* Raise the exception */
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RtlRaiseException(&ExceptionRecord);
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}
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KiUserCallbackDispatcher(ULONG Index,
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PVOID Argument,
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ULONG ArgumentLength)
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{
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/* Return with the result of the callback function */
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ZwCallbackReturn(NULL,
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0,
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((USER_CALL)(NtCurrentPeb()->KernelCallbackTable[Index]))
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(Argument, ArgumentLength));
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}
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