Extending windbg with Page Fault Breakpoints

// ----------------------------------------------------------------------------------------------
// Copyright (c) Mattias H�gstr�m.
// ----------------------------------------------------------------------------------------------
// This source code is subject to terms and conditions of the Microsoft Public License. A 
// copy of the license can be found in the License.html file at the root of this distribution. 
// If you cannot locate the Microsoft Public License, please send an email to 
// dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound 
// by the terms of the Microsoft Public License.
// ----------------------------------------------------------------------------------------------
// You must not remove this notice, or any other, from this software.
// ----------------------------------------------------------------------------------------------

#include "stdafx.h"
#include <string>

using namespace std;


typedef struct {
	char buffer[4];
	char maxLen;
	char origValue;
	char stop;
} SampleStruct;

SampleStruct data = {0};

void SetLimits()
{
	memset(&data, 0, sizeof(data));
	data.maxLen = sizeof(data.buffer) - 1;
}

void SetValue(char amount)
{
	data.origValue = amount;
}

void Convert()
{
	// Function expects values 0-127
	// Negative numbers will be proceeded by a minus (-)
	// and will overwrite maxLen  memory
	sprintf(data.buffer, "%d", data.origValue);
}

string GetValue()
{
	return data.buffer;
}

int ValidateDataIntegrity()
{
	int result = 0;
	if (!(strlen(data.buffer) < sizeof(data.buffer)))
		result |= 1;
	if (!(data.maxLen == (sizeof(data.buffer) - 1)))
		result |= 2;
	if (strlen(data.buffer) != 0)
	{
		int a1 = data.origValue;
		int a2 = atoi(data.buffer);
		if (a1 != a2)
			result |= 4;
	}
	return result;
}