/*

* Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#if !defined(__PE_FILE_H__)

#define __PE_FILE_H__

#include <e32rom.h>

#include <e32image.h>

#include "pe_defs.h"

//

const TInt KTextSection=0;

const TInt KConstSection=1;

const TInt KExportSection=2;

const TInt KDataSection=3;

const TInt KBssSection=4;

const TInt KImportSection=5;

const TInt KCrtSection=6;

const TInt KRelocSection=7;

const TInt KNumberOfSections=8;

//

enum TImportStat {EImpError, EImpSuccess, EImpDone};

//

class PEFile

	{

public:

	PEFile();

	~PEFile();

	TBool Init(const char* aFileName);

	void Close();

	//

	TImportStat GetNextImport(char * &aDllName, TUint16 &aOrdinal, TUint32 * &aThunkPtr);

	TUint32 GetFixUp(const TUint16 aOrdinal);

	void RelocateExportTable();

	TUint GetNumberOfExportedFunctions();

	TUint GetOrdinalBase();

	TBool ExportSectionExists();

	TBool ImportSectionExists();

	TUint RoundToSectionSize(TUint aSize);

	void DumpPeHeaders();

	//

	TInt Normalise();

	void GetRelocs(TUint *aReloc, TUint *aRelocSection, TInt aNumberOfRelocs);

	TInt ReadSectionHeaders();

	TInt ReadData();

	TInt ReadExportDirectory();

	char *ReadSectionData(PIMAGE_SECTION_HEADER aHeader);

	TInt NumberOfImports() const;

	TInt NumberOfImportDlls() const;

	TInt NumberOfExports() const;

	TInt NumberOfRelocs();

public:

	static TInt CmpSectionName(PIMAGE_SECTION_HEADER apSectionHeader, char *aName);

	TInt VirtualAddressInSection(TUint aVA, PIMAGE_SECTION_HEADER aHeader);

	TUint DistanceFromSection(TUint aVA, PIMAGE_SECTION_HEADER aHeader);

	TInt FindSectionByVa(TUint aVa, TUint aTryToBeClever=0);

	static TInt HasInitialisedData(PIMAGE_SECTION_HEADER aHeader);

private:

	TBool IsInCode(TUint32 anAddr);

	TBool IsInData(TUint32 anAddr);

	TBool IsInDataReloc(TUint32 anAddr);

	TBool IsInExport(TUint32 anAddr);

	TBool IsInImport(TUint32 anAddr);

	TBool IsValidDOSHeader(PIMAGE_DOS_HEADER pDOSHeader);

	TBool IsValidNTHeader(PIMAGE_NT_HEADERS pNTHeader);

	TBool IsValidFileHeader(PIMAGE_FILE_HEADER pFileHeader);

	void DumpNextSectionInFile(PIMAGE_SECTION_HEADER pSectionHeader);

	void CopySectionData(TAny *source, TAny *dest, TUint32 fileLength, TUint32 memLength);

	TBool ProcessRelocData(TAny *relocData,TInt dataSize);

	PEFile(const PEFile&);

	const PEFile & operator = (const PEFile&);

public:

	static TUint32 iRomMemBase; // where the ROM is being loaded to

	static TUint32 iRomLinearBase; // where the ROM will run

	TUint32 iMemBase; // where this file is being loaded to

	TUint32 iEntryPoint;

	TUint32 iImageSize;

	TUint32 iCodeSize;

	TUint32 iDataSize;

	TUint32 iHeapReservedSize;

	TUint32 iHeapCommittedSize;

	TUint32 iStackReservedSize;

	TUint32 iStackCommittedSize;

	TUint32 iBssSize;

	TUint32 iBssOffset;

	TUint32 iSectionAlign;

	TUint32 iExpDirectoryOffset;

	TUint32 iDataOffset;

	TBool	iImageIsDll;

private:

	IMAGE_NT_HEADERS *iHeader;

 	PIMAGE_EXPORT_DIRECTORY	iExpDirectory;

	PIMAGE_IMPORT_DESCRIPTOR iImpDescriptor; 

	char *iFileName;

	TInt32 iFileHandle;

	TUint32 iLinkedBase;

	TUint32 iStartOfHeaders; // whether DOS header or not

	TUint32 iSizeOfHeaders; // Up to and including section headers

	TUint32 iNumSections;

	TUint32 iRomRunAddr; // where the code will run & rdata be accessed

	TUint32 iRamRunAddr; // and where the data & bss will be when it does

	TUint32 iRomDelta;

	TUint32 iRamDelta;

	TBool iHadDataSection;

// stuff for relocating image successfully in 2 parts

	TUint32 iBssSectionLinkedAddr;

	TUint32 iBssSectionAddr;

	TUint32 iBssSectionSize;

	TUint32 iDataSectionLinkedAddr;

	TUint32 iDataSectionAddr;

	TUint32 iDataSectionSize;

	TUint32 iCodeSectionAddr;

	TUint32 iCodeSectionSize;

	TUint32 iRDataSectionAddr;

	TUint32 iRDataSectionSize;

	TUint32 iCRTSectionAddr;

	TUint32 iCRTSectionSize;

	TUint32 iExportDataDir;

// stuff for the pe->e32image translator

	PIMAGE_SECTION_HEADER iSectionHeader[KNumberOfSections];

	char *iSectionData[KNumberOfSections];

	TInt iExportDirSize;

	TInt iCpu;

	friend class E32ImageFile;

	friend class E32ImageFile_PE;

	};

class E32ImageFile_PE : public E32ImageFile

	{

public:

	E32ImageFile_PE();

	virtual ~E32ImageFile_PE();

	virtual TBool Translate(const char* aFileName, TUint aDataBase, TBool aAllowDllData, TBool /*aSymLkupEnabled*/);

	TBool Translate(PEFile &aPEFile);

	TUint ImportAddressTableOffset();

	TUint ConstOffset();

private:

	TInt DoCodeHeader(PEFile &aPeFile);

	TInt DoDataHeader(PEFile &aPeFile, TUint aDataBase);

	TInt CopyCode(char *aPtr, PEFile &aPeFile);

	TInt CopyData(char *aPtr, PEFile &aPeFile);

	TInt CopyImportAddrTable(char *aPtr, PEFile &aPeFile);

	char *CreateImportSection(const PEFile &aPeFile, TInt &aSize);

	void CreateExportSection(char *aPtr, PEFile &aPeFile);

	void CreateExportDirectory(char *aPtr, PEFile &aPeFile);

	void FixExportDirectory(TUint *aExportDir, PEFile &aPeFile);

	void FixRelocs(PEFile &aPeFile, TUint *relocation, TUint *relocsection, TInt aNumberOfRelocs);

	char *CreateCodeRelocs(TUint *reloc, TUint *relocsection, TInt nrelocs, TInt &aSize);

	char *CreateDataRelocs(TUint *reloc, TUint *relocsection, TInt nrelocs, TInt &aSize);

	TUint FixAddress(PEFile &aPeFile, TUint va);

	TUint FixImportThunk(PEFile &aPeFile, TUint va);

private:

	PIMAGE_SECTION_HEADER iPeHeader[KNumberOfSections];

	char *iPeData[KNumberOfSections];

	TUint iConstOffset;

	TUint iCrtOffset;

	};

#endif