// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

// Implementation of the Class ElfLocalRelocation for the elf2e32 tool

// @internalComponent

// @released

// 

//

#include "pl_elflocalrelocation.h"

#include "pl_elfexecutable.h"

#include "e32imagedefs.h"

/**

Constructor for class ElfLocalRelocation

@param aElfExec - Instance of class ElfExecutable

@param aAddr    - location where the relocation refers to.

@param aAddend  - addend for the relocation entry

@param aIndex   - symbol index

@param aRelType - Relocation type

@param aRel     - Elf relocation entry

@internalComponent

@released

*/

ElfLocalRelocation::ElfLocalRelocation(ElfExecutable *aElfExec, PLMemAddr32 aAddr, \

			PLUINT32 aAddend, PLUINT32 aIndex, PLUCHAR aRelType, \

			Elf32_Rel* aRel, bool aVeneerSymbol): \

		ElfRelocation(aElfExec, aAddr, aAddend, aIndex, aRelType, aRel)

{

	iSegment = aElfExec->Segment( iAddr );

	iSegmentType = aElfExec->SegmentType( iAddr );

	iSymbol = &(aElfExec->iElfDynSym[iSymNdx]);

	iDelSym = false;

	iVeneerSymbol = aVeneerSymbol;

}

/**

Constructor for class ElfLocalRelocation

@param aElfExec - Instance of class ElfExecutable

@param aAddr    - location where the relocation refers to.

@param aAddend  - addend for the relocation entry

@param aIndex

@param aRelType - Relocation type

@param aRel     - Elf relocation entry

@param aSegmentType - Segment type

@param aSym			- Elf symbol

@param aDelSym		- indicate if the symbol is to be deleted by this relocation.

@internalComponent

@released

*/

ElfLocalRelocation::ElfLocalRelocation(ElfExecutable *aElfExec, PLMemAddr32 aAddr, \

			PLUINT32 aAddend, PLUINT32 aIndex, PLUCHAR aRelType, \

			Elf32_Rel* aRel, ESegmentType aSegmentType, Elf32_Sym* aSym,bool aDelSym, bool aVeneerSymbol): \

		ElfRelocation(aElfExec, aAddr, aAddend, aIndex, aRelType, aRel)

{

	iSegmentType = aSegmentType;

	iSegment = aElfExec->Segment(aSegmentType);

	//iSymbol = &(aElfExec->iElfDynSym[iSymNdx]);

	iSymbol = aSym;

	iDelSym = aDelSym;

	iVeneerSymbol = aVeneerSymbol;

}

/**

Destructor for class ElfLocalRelocation

@internalComponent

@released

*/

ElfLocalRelocation::~ElfLocalRelocation()

{

	if(iDelSym)

	{

		DELETE_PTR(iSymbol);

	}

}

/**

This function overrides the virtual function to indicate that this

relocation is not an import relocation.

@return false

@internalComponent

@released

*/

bool ElfLocalRelocation::IsImportRelocation(){

	return false;

}

/**

Function to add local relocations

@internalComponent

@released

*/

void ElfLocalRelocation::Add() {

	iElfExec->AddToLocalRelocations(this);

}

/**

This function adjusts the fixup for the relocation entry.

@return - Relocation type

@internalComponent

@released

*/

PLUINT16 ElfLocalRelocation::Fixup()

{

	if(!ExportTableReloc() && !iVeneerSymbol)

	{

		Elf32_Word * aLoc = iElfExec->GetFixupLocation(this, iAddr);

		Elf32_Word aLocVal = * aLoc;

		if (iRelType == R_ARM_ABS32 || iRelType == R_ARM_GLOB_DAT ) 

		{

			Elf32_Word aFixedVal = aLocVal + iSymbol->st_value;

			*aLoc = aFixedVal;

		}

	}

	ESegmentType aType;

	if( iSymbol )

		aType = iElfExec->Segment(iSymbol);

	else

		aType = iSegmentType;

	if (aType == ESegmentRO)

		return KTextRelocType;

	else if (aType == ESegmentRW)

		return KDataRelocType;

	// maybe this should be an error

	return KInferredRelocType;

}

/**

Function for export table relocation

@return - True

@internalComponent

@released

*/

bool ElfLocalRelocation::ExportTableReloc()

{

	return iRel == 0;

}