// DriverEntry.cpp - Main program for SEHTEST sample driver

// Copyright (C) 1999, 2002 by Walter Oney

// All rights reserved



#include "stddcls.h"



#define DRIVERNAME "SEHTEST"



///////////////////////////////////////////////////////////////////////////////



extern "C" NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)

	{							// DriverEntry

	KdPrint((DRIVERNAME " - Entering DriverEntry\n"));



	BOOLEAN win9x = !IoIsWdmVersionAvailable(1, 0x10);



	PVOID p = (PVOID) 1;



	// Exception raised by ProbeForWrite on misaligned address



	__try

		{

		KdPrint((DRIVERNAME " - About to generate alignment exception in ProbeForWrite\n"));

		ProbeForWrite(p, 4, 4);

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



	// Exception due to user-mode pointer dereference



	if (win9x)

		p = (PVOID) 0x01000000;

	__try

		{

		KdPrint((DRIVERNAME " - About to generate page fault\n"));

		int x = *(int*) p;

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



	// Exception raised by ProbeForWrite on kernel-mode address



	__try

		{

		KdPrint((DRIVERNAME " - About to generate access exception in ProbeForWrite\n"));

		p = (PVOID) &p;

		ProbeForWrite(p, 4, 4);

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



	// Debug exception



#ifdef _X86_



	__try

		{

		KdPrint((DRIVERNAME " - About to generate debug exception\n"));

		_asm pushfd

		_asm or dword ptr [esp], 100h	; trap flag

		_asm popfd

		_asm test eax, eax

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



	// Breakpoint exception



	__try

		{

		KdPrint((DRIVERNAME " - About to generate breakpoint exception\n"));

		_asm int 3

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



	// Overflow exception



	__try

		{

		KdPrint((DRIVERNAME " - About to generate overflow exception\n"));

		_asm mov eax, 0x80000000

		_asm add eax, 0x80000000

		_asm into

		KdPrint((DRIVERNAME " - You shouldn't see this message\n"));

		}

	__except(EXCEPTION_EXECUTE_HANDLER)

		{

		KdPrint((DRIVERNAME " - Exception was caught - %X\n", GetExceptionCode()));

		}



#endif // _X86_



	// Enough!!



	KdPrint((DRIVERNAME " - Program kept control after exceptions\n"));



	__try

		{

		return STATUS_UNSUCCESSFUL;

		}

	__finally

		{

		KdPrint((DRIVERNAME " - Failing DriverEntry; cleanup handler got control first\n"));

		}



	KdPrint((DRIVERNAME " - You shouldn't see this message\n"));



	return STATUS_SUCCESS;		// never reached

	}							// DriverEntry