// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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// Implementation of the Class ElfExecutable for the elf2e32 tool+
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// @internalComponent+
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// @released+
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// +
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//+
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+
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#if !defined(_PL_ELFEXECUTABLE_H_)+
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#define _PL_ELFEXECUTABLE_H_+
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+
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#include "pl_common.h"+
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#include <list>+
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#include <hash_map>+
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#include "pl_elfimports.h"+
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#include "pl_elfrelocations.h"+
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#include "pl_elfexports.h"+
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+
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using std::list;+
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using std::hash_map;+
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+
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class DllSymbol;+
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class Symbol;+
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class ElfRelocations;+
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class ElfExports;+
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class ParameterListInterface;+
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class ElfLocalRelocation;+
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/**+
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This class is for ELF object carrying the elf header, sections, segments.+
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@internalComponent+
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@released+
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*/+
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class ElfExecutable+
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{+
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+
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public:+
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	ElfExecutable(ParameterListInterface *aParameterListInterface);+
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	virtual ~ElfExecutable();+
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	+
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	PLUINT32 ProcessElfFile(Elf32_Ehdr *aElfHdr);+
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	void DumpElfFile(char* aFile);+
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+
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	PLUINT32 ProcessSymbols();+
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	ElfImports::ImportMap GetImports();+
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	ElfExports* GetExports();+
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	DllSymbol* AddToExports(char* aDll, DllSymbol* aSymbol);+
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	void AddToImports(ElfImportRelocation* aReloc);+
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	PLUINT32 AddToRelocations(ElfRelocation* aReloc);+
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	void AddToLocalRelocations(ElfRelocation* aReloc);+
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	void ProcessVerInfo();+
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+
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	Elf32_Sym* FindSymbol(char* aSymName);+
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+
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	PLUINT32 GetSymbolOrdinal( char* aSymName);+
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	PLUINT32 GetSymbolOrdinal( Elf32_Sym* );+
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	char* GetSymbolName( PLUINT32 aSymIdx);+
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	Elf32_Word GetRelocationOffset(ElfRelocation * aReloc);+
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	Elf32_Word *GetRelocationPlace(ElfRelocation * aReloc);+
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+
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	Elf32_Word GetROBase();+
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	Elf32_Word GetRWBase();+
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	size_t GetROSize();+
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	size_t GetRWSize();+
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	size_t GetBssSize();+
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	MemAddr GetRawROSegment();+
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	MemAddr GetRawRWSegment();+
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	Elf32_Word EntryPointOffset();+
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	ESegmentType SegmentType(Elf32_Addr aAddr);+
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	Elf32_Phdr* Segment(Elf32_Addr aAddr);+
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	ElfRelocations::RelocationList & GetCodeRelocations();+
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	ElfRelocations::RelocationList & GetDataRelocations();+
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	ElfRelocations& GetLocalRelocations();+
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	bool ExeceptionsPresentP();+
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	ElfExports::ExportList& GetExportsInOrdinalOrder();+
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	Elf32_Sym* LookupStaticSymbol(char * aName);+
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public:+
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	/**+
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	 * The elf header pointer which points to the base of the file records+
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	 */+
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	Elf32_Ehdr	*iElfHeader;+
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	Elf32_Addr	iEntryPoint;+
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	/**+
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	 * The dynamic program header of the elf file+
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	 */+
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	Elf32_Phdr	*iProgHeader;+
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+
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	PLUINT32	iSONameOffset;+
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	char		*iSOName;+
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	/**+
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	 * This member points to the base of the section header table.+
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	 */+
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	Elf32_Shdr		*iSections;+
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	Elf32_Verdef	*iVersionDef;+
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	PLUINT32		iVerDefCount;+
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	Elf32_Verneed	*iVersionNeed;+
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	PLUINT32		iVerNeedCount;+
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	Elf32_Half		*iVersionTbl;+
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	PLUINT32		iRelSize;+
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	PLUINT32		iRelEntSize;+
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	PLUINT32		iNRelocs;+
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	Elf32_Rel		*iRel;+
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	PLUINT32		iRelaSize;+
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	PLUINT32		iRelaEntSize;+
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	Elf32_Rela		*iRela;+
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	char			*iStringTable;+
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	char			*iSectionHdrStrTbl;+
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+
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	list<char*>		iNeeded;+
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	VersionInfo		*iVerInfo;+
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	/**+
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	 * The dynamic symbol array.+
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	 */+
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	Elf32_Sym		*iElfDynSym;//The ELF symbol+
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	hash_map<PLUINT32, DllSymbol*>	iSymbolTable; //The representation+
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+
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	/**+
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	 * The static symbol table.+
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	 */+
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	Elf32_Sym *iSymTab; +
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	char *iStrTab;+
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	Elf32_Sym *iLim;+
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+
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	PLUINT32		iNSymbols;+
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	Elf32_HashTable	*iHashTbl;+
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	Elf32_Phdr		*iDynSegmentHdr;+
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	Elf32_Phdr		*iDataSegmentHdr;+
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	MemAddr			iDataSegment;+
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	size_t			iDataSegmentSize;+
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	PLUINT32		iDataSegmentIdx;+
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	Elf32_Phdr		*iCodeSegmentHdr;+
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	MemAddr			iCodeSegment;+
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	size_t			iCodeSegmentSize;+
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	PLUINT32		iCodeSegmentIdx;+
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	ElfImports		iImports;+
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	ElfExports		*iExports;+
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	ElfRelocations  iLocalRelocations;+
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	ParameterListInterface *iParameterListInterface;+
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	PLUINT32		iPltGotBase;+
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	PLUINT32		iPltGotLimit;+
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	PLUINT32		iStrTabSz;+
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	PLUINT32		iSymEntSz;+
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	Elf32_Word		*iPltGot;+
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	PLUINT32		iPltRelType;+
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	Elf32_Rel		*iPltRel;+
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	PLUINT32		iPltRelaSz;+
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	Elf32_Rela		*iPltRela;+
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	PLUINT32		iPltRelSz;+
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	PLUINT32		iJmpRelOffset;+
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+
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	PLUINT32	ValidateElfFile();+
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	PLUINT32	ProcessDynamicEntries();+
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	void	ProcessRelocations();+
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	template <class T> void	ProcessRelocations(T *aElfRel, size_t aSize);+
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+
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	VersionInfo* GetVersionInfo(PLUINT32 aIndex);+
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	char*		SymbolDefinedInDll(PLUINT32 aSymbolIndex);+
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	void SetVersionRecord( ElfRelocation* aReloc );+
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+
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/** This function says if the Symbol is a global symbol+
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@return It returns true if the Symbol is a global one.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool GlobalSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol is Exported+
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@return It returns true if the Symbol is an exported one.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool ExportedSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol is Imported+
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@return It returns true if the Symbol is an imported one.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool ImportedSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol is a Code Symbol+
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@return It returns true if the Symbol is of Code type.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool FunctionSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol is a Data Symbol+
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@return It returns true if the Symbol is of Data type.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool DataSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol is Defined+
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@return It returns true if the Symbol is defined.+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool DefinedSymbol(Elf32_Sym* aSym);+
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+
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/** This function says if the Symbol has a default Visibility+
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@return It returns true if the Symbol has a default Visibility+
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@param aSym The reference to the Symbol whose attribute is being checked+
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*/+
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bool VisibleSymbol(Elf32_Sym* aSym);+
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+
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/** This function finds the segment in which this address belongs+
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@return the segment type+
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@param aAddr The address within the executable+
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*/+
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+
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Elf32_Word Addend(Elf32_Rel* aRel);+
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Elf32_Word Addend(Elf32_Rela* aRel);+
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+
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char* SymbolFromDSO(PLUINT32  aSymbolIndex);+
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Elf32_Word* GetFixupLocation(ElfLocalRelocation* aReloc, Elf32_Addr aPlace);+
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ESegmentType Segment(Elf32_Sym *aSym);+
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Elf32_Phdr* SegmentFromAbs(Elf32_Addr aAddr);+
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Elf32_Phdr* Segment(ESegmentType aType);+
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+
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/** This function processes the linker generated Veneer symbols and+
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 *  creates a relocation entry.+
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 */+
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void ProcessVeneers();+
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/** This function processes the ELF file to find the static symbol table.+
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*/+
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void FindStaticSymbolTable();+
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/** This function finds the .comment section+
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@return the pointer to the comment section+
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*/+
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char* FindCommentSection();+
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/** This function finds the value at the address passed in+
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@return the value at the address passed in+
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@param aAddr The address within the executable+
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*/+
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Elf32_Word FindValueAtLoc(Elf32_Addr aOffset);+
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};+
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+
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+
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+
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#endif // !defined(_PL_ELFEXECUTABLE_H_)+
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