// 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 ElfRelocation for the elf2e32 tool

// @internalComponent

// @released

// 

//

#include "pl_elfrelocation.h"

#include "pl_elfimportrelocation.h"

#include "pl_elflocalrelocation.h"

#include "pl_dllsymbol.h"

/**

Constructor for class ElfRelocation

@param aElfExec - Instance of class ELfExecutable

@param aAddr

@param aAddend

@param aIndex

@param aRelType - Relocation type

@param aRel

@internalComponent

@released

*/

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

			PLUINT32 aAddend, PLUINT32 aIndex, PLUCHAR aRelType, \

			Elf32_Rel* aRel) : iAddr(aAddr), iAddend(aAddend), \

			iSymNdx(aIndex), iRelType(aRelType), iRel(aRel),  iElfExec(aElfExec)

{

}

/**

Destructor for class ElfRelocation

@internalComponent

@released

*/

ElfRelocation::~ElfRelocation(){

}

/**

Function to create new relocation entry

@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

@param aImportRel - Import relocation

@internalComponent

@released

*/

ElfRelocation* ElfRelocation::NewRelocEntry(ElfExecutable *aElfExec, PLMemAddr32 aAddr, \

				PLUINT32 aAddend, PLUINT32 aIndex, PLUCHAR aRelType, \

				void* aRel, bool aImportRel)

{

	ElfRelocation	*aReloc = NULL;

	if(aImportRel)

		aReloc = new ElfImportRelocation(aElfExec, aAddr, aAddend, aIndex, aRelType, (Elf32_Rel*)aRel);

	else

		aReloc = new ElfLocalRelocation(aElfExec, aAddr, aAddend, aIndex, aRelType, (Elf32_Rel*)aRel);

	return aReloc;

}

/**

This function verifies if the relocation entry is required to be

handled by the postlinker.

@param aType - type of relocation

@return - True if valid relocation type, otherwise false

@internalComponent

@released

*/

bool ElfRelocation::ValidRelocEntry(PLUCHAR aType) {

	switch(aType)

	{

	case R_ARM_ABS32:

	case R_ARM_GLOB_DAT:

	case R_ARM_JUMP_SLOT:

	case R_ARM_RELATIVE:

	case R_ARM_GOT_BREL:

		return true;

	case R_ARM_NONE:

		return false;

	default:

		return false;

	}

}