e32tools/elf2e32/source/pl_elflocalrelocation.cpp
changeset 0 044383f39525
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/e32tools/elf2e32/source/pl_elflocalrelocation.cpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,158 @@
+// 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;
+}
+
+
+