--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/debug/crashMonitor/inc/crashlogwalker.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,75 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// some utility classes for writing data to buffer
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+#ifndef __CRASH_LOG_WALKER_H_INCLUDED__
+#define __CRASH_LOG_WALKER_H_INCLUDED__
+
+#include <e32cmn.h> 
+#include <rm_debug_api.h>
+
+#include <scmdatatypes.h>
+
+namespace Debug
+	{
+	
+	/**
+	 * This class provides functionality to walk through a crash log in a data buffer
+	 * ensuring it is valid and getting the information we require back
+	 */
+	class TCrashLogWalker
+		{
+	public:
+		TCrashLogWalker(TDesC8& aBuffer);
+		
+		TInt ReadLogHeader(const TInt aStartPoint);		
+		TInt GetCrashSize() const;
+		TInt GetCrashId() const;
+		const TRmdArmExcInfo& GetCrashContext() const;		
+		const TCrashInfoHeader& GetCrashHeader() const;
+		const TCrashOffsetsHeader& GetOffsetsHeader() const;
+		
+#ifndef __KERNEL_MODE__		
+		MByteStreamSerializable*  GetNextDataTypeL(TInt& aPos, SCMStructId& aId, TInt& aBufferSize);
+		TRawData* GetRawDataTypeL(TInt& aPos, TInt& aBufferSize, TDes8& aRawBuf, TInt aStartRawPosition = 0);
+#endif
+		
+		void UpdateBuffer(TDesC8& aBuffer);
+		
+	private:
+		
+		void HelpAssignRegisterToContext(const TRegisterValue& aRegVal);
+		
+	private:
+		TDesC8& iBuffer;					//buffer containing data for the log we are walking - not all of it, just the bit of interest
+		TCrashInfoHeader iCrashHeader;		//Stores the header of the log we are walking
+		TCrashOffsetsHeader iOffsets;		//Stores the offsets header of the log we are walking
+		TRmdArmExcInfo iContext;			//Stores the register context of the log we are walking
+		
+		TByteStreamReader iReader;
+		
+	private:
+		TInt VerifyHeader();
+		
+		};
+	
+	}
+
+#endif // __CRASH_LOG_WALKER_H_INCLUDED__