1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // some utility classes for writing data to buffer

    15 // 

    16 //

    17 

    18 /**

    19  @file

    20  @internalTechnology

    21 */

    22 #ifndef __CRASH_LOG_WALKER_H_INCLUDED__

    23 #define __CRASH_LOG_WALKER_H_INCLUDED__

    24 

    25 #include <e32cmn.h> 

    26 #include <rm_debug_api.h>

    27 

    28 #include <scmdatatypes.h>

    29 

    30 namespace Debug

    31 	{

    32 	

    33 	/**

    34 	 * This class provides functionality to walk through a crash log in a data buffer

    35 	 * ensuring it is valid and getting the information we require back

    36 	 */

    37 	class TCrashLogWalker

    38 		{

    39 	public:

    40 		TCrashLogWalker(TDesC8& aBuffer);

    41 		

    42 		TInt ReadLogHeader(const TInt aStartPoint);		

    43 		TInt GetCrashSize() const;

    44 		TInt GetCrashId() const;

    45 		const TRmdArmExcInfo& GetCrashContext() const;		

    46 		const TCrashInfoHeader& GetCrashHeader() const;

    47 		const TCrashOffsetsHeader& GetOffsetsHeader() const;

    48 		

    49 #ifndef __KERNEL_MODE__		

    50 		MByteStreamSerializable*  GetNextDataTypeL(TInt& aPos, SCMStructId& aId, TInt& aBufferSize);

    51 		TRawData* GetRawDataTypeL(TInt& aPos, TInt& aBufferSize, TDes8& aRawBuf, TInt aStartRawPosition = 0);

    52 #endif

    53 		

    54 		void UpdateBuffer(TDesC8& aBuffer);

    55 		

    56 	private:

    57 		

    58 		void HelpAssignRegisterToContext(const TRegisterValue& aRegVal);

    59 		

    60 	private:

    61 		TDesC8& iBuffer;					//buffer containing data for the log we are walking - not all of it, just the bit of interest

    62 		TCrashInfoHeader iCrashHeader;		//Stores the header of the log we are walking

    63 		TCrashOffsetsHeader iOffsets;		//Stores the offsets header of the log we are walking

    64 		TRmdArmExcInfo iContext;			//Stores the register context of the log we are walking

    65 		

    66 		TByteStreamReader iReader;

    67 		

    68 	private:

    69 		TInt VerifyHeader();

    70 		

    71 		};

    72 	

    73 	}

    74 

    75 #endif // __CRASH_LOG_WALKER_H_INCLUDED__