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