// 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 ElfProducer for the elf2e32 tool
// @internalComponent
// @released
// 
//

#include "pl_elfproducer.h"
#include "pl_dllsymbol.h"
#include <stdio.h>
#include <string>
#include "errorhandler.h"

/**
 * Following array is indexed on the SECTION_INDEX enum 
 */
char* SECTION_NAME[] = {
	"",
	"ER_RO",
	".dynamic",
	".hash",
	".version_d",
	".version",
	".strtab",
	".dynsym",
	".shstrtab"
};


/**
Constructor for class ElfProducer
@param aParameterListInterface - instance of class ParameterListInterface
@internalComponent
@released
*/
ElfProducer::ElfProducer(ParameterListInterface *aParameterListInterface): ElfExecutable(aParameterListInterface) , \
	 iDSONameOffset(0),\
	 iLinkAsOffset(0),\
	 iSymbolsList(NULL),
	 iDSODaux(NULL), \
	 iDSOBuckets(NULL), \
     iDSOChains(NULL),\
	 iCodeSectionData(NULL),\
	 iElfFileOffset(0)
{
}



/**
Destructor for class ElfProducer to release allocated memory
@internalComponent
@released
*/
ElfProducer::~ElfProducer(){
	Cleanup();
}


/**
This function sets the export Symbol list
@internalComponent
@released
@param aSymbolList The export Symbol list.
*/
void ElfProducer::SetSymbolList(SymbolList& aSymbolList){
	iSymbolsList = &aSymbolList;
	if (iSymbolsList)
	{
		SymbolList::iterator aPos, aEnd;
		aPos = iSymbolsList->begin();
		aEnd = iSymbolsList->end();
		char *aAbsentSymbol = "_._.absent_export_";
		int length = strlen(aAbsentSymbol);
		while(aPos != aEnd)
		{
			/* If a symbol is marked as Absent in the DEF file, replace the 
			 * symbol name with "_._.absent_export_<Ordinal Number>"
			 */
			if((*aPos)->Absent())
			{
				int aOrdinalNo = (*aPos)->OrdNum();
				// Ordinal Number can be upto 0xffff which is 6 digits
				char * aSymName = new char[length+7];
				sprintf(aSymName, "_._.absent_export_%d", aOrdinalNo);
				(*aPos)->SetSymbolName(aSymName);
				delete[] aSymName;
			}
			aPos++;
		}
	}
	iNSymbols = iSymbolsList->size() + 1;
}

/**
This function takes the file names and generates the proxy dso library.
@internalComponent
@released
@param aDsoFullName The full path and proxy-dso file name
@param aDsoFileName The proxy-dso file name
@param aLinkAs The DLL that defines the export Symbols
*/
void ElfProducer::WriteElfFile(char* aDsoFullName, char* aDsoFileName , char* aLinkAs){

	//This includes the full path followed by the file name
	iDsoFullName = aDsoFullName;

	iDSOName = aDsoFileName;
	iLinkAs = aLinkAs;

	InitElfContents();

	WriteElfContents();
}

/**
This function initializes the Elf members
@internalComponent
@released
*/
void ElfProducer::InitElfContents() {

	iElfHeader		= new Elf32_Ehdr;
	iSections		= new Elf32_Shdr[MAX_SECTIONS+1];

	iElfDynSym		= new Elf32_Sym[iNSymbols];
	iVersionTbl		= new Elf32_Half[iNSymbols];
	iVersionDef		= new Elf32_Verdef[2];
	iDSODaux		= new Elf32_Verdaux[2];

	iProgHeader		 = new Elf32_Phdr[2];
	iCodeSectionData = new PLUINT32[iNSymbols];	

	iHashTbl = new Elf32_HashTable;
	
	//premeditated
	iHashTbl->nBuckets = (iNSymbols /3) + (iNSymbols % 0x3);
	
	iHashTbl->nChains = iNSymbols;

	iDSOBuckets = new Elf32_Sword[iHashTbl->nBuckets];
	iDSOChains = new Elf32_Sword[iHashTbl->nChains];

	Elf32_Sword	aNullPtr = 0;

	memset(iDSOBuckets, aNullPtr, sizeof(Elf32_Sword)*iHashTbl->nBuckets);
	memset(iDSOChains,  aNullPtr, sizeof(Elf32_Sword)*iHashTbl->nChains);
	memset(iCodeSectionData,  0, sizeof(PLUINT32)*iNSymbols);

	CreateElfHeader();

	SymbolList::iterator aItr = iSymbolsList->begin();
	SymbolList::iterator aEnd = iSymbolsList->end();
	Symbol		*aSym;
	PLUINT32	aIdx = 1;

	memset( &iElfDynSym[0], 0, sizeof(Elf32_Sym));
	iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(), 0);

	while(aItr != aEnd) {
		String		aSymName("");
		aSym = *aItr;
		aSymName = aSym->SymbolName();
		//set symbol info..
		iElfDynSym[aIdx].st_name = iDSOSymNameStrTbl.size();

		iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(), aSymName.begin(), aSymName.end() );
		iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(), 0);

		SetSymolFields( aSym, &iElfDynSym[aIdx], aIdx);

		//set version table info...
		iVersionTbl[aIdx] = DEFAULT_VERSION;
		AddToHashTable(aSym->SymbolName(), aIdx);
		aItr++;aIdx++;
	}

	CreateVersionTable();
	
	//Fill section headers...
	CreateSections();

	//Copy dyn entries..
	CreateDynamicEntries();

	//create code section data - this has the ordinal numbers...
	CreateProgHeader();
}

/**
This function creates the version definition table
@internalComponent
@released
*/
void ElfProducer::CreateVersionTable()
{
	//Fill verdef table...
	iVersionDef[0].vd_ndx = 1;
	iVersionDef[0].vd_cnt = 1;
	iVersionDef[0].vd_flags = 1;
	iVersionDef[0].vd_hash = Util::elf_hash((const PLUCHAR*) iDSOName.c_str());
	iVersionDef[0].vd_version = 1;

	iVersionDef[0].vd_aux = sizeof(Elf32_Verdef);
	iVersionDef[0].vd_next = sizeof(Elf32_Verdef) + sizeof(Elf32_Verdaux);

	iDSONameOffset = iDSOSymNameStrTbl.size();

	iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(),iDSOName.begin(), iDSOName.end());
	iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(), 0);
	
	iDSODaux[0].vda_name = iDSONameOffset;
	iDSODaux[0].vda_next = 0;

	iVersionDef[1].vd_ndx = DEFAULT_VERSION;
	iVersionDef[1].vd_cnt = 1;
	iVersionDef[1].vd_flags = 0;
	iVersionDef[1].vd_hash = Util::elf_hash((const PLUCHAR*)iLinkAs.c_str());
	iVersionDef[1].vd_version = 1;

	iVersionDef[1].vd_aux = sizeof(Elf32_Verdef);
	iVersionDef[1].vd_next = 0;

	iLinkAsOffset = iDSOSymNameStrTbl.size();
	iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(),iLinkAs.begin(), iLinkAs.end());
	iDSOSymNameStrTbl.insert(iDSOSymNameStrTbl.end(), 0);
	
	iDSODaux[1].vda_name = iLinkAsOffset;
	iDSODaux[1].vda_next = 0;

}

/**
This function sets the Elf Symbol fields
@internalComponent
@released
@param aSym The Symbol representation
@param aElfSym The Elf Symbol
@param aCodeIndex The index at which this Symbol refers to in the code section where, we have the ordinal number
*/
void ElfProducer::SetSymolFields(Symbol *aSym, Elf32_Sym* aElfSym, PLUINT32 aCodeIndex) {
	
	aElfSym->st_other = STV_DEFAULT;
	
	aElfSym->st_info = (PLUCHAR) (ELF32_ST_INFO(STB_GLOBAL, aSym->CodeDataType()));
	aElfSym->st_value	= (aCodeIndex - 1)*sizeof(Elf32_Word);
	
	if(aSym->CodeDataType() == SymbolTypeCode){
		aElfSym->st_size	= sizeof(Elf32_Word);
	}else{
		aElfSym->st_size	= aSym->SymbolSize();
	}
	aElfSym->st_shndx = CODE_SECTION;
}

/**
This function adds an entry into the hash table based on the symbol name.
@internalComponent
@released
@param aSymName The Symbol name
@param aIndex The Symbol index in the Symbol table
*/
void ElfProducer::AddToHashTable(const char* aSymName, PLUINT32 aIndex) 
{
	Elf32_Sword	aNullPtr = 0;

	PLULONG	aHash = Util::elf_hash((PLUCHAR*)aSymName);
	PLUINT32  aBIdx = aHash % iHashTbl->nBuckets;

	if(iDSOBuckets[aBIdx] == aNullPtr)
	{
		iDSOBuckets[aBIdx] = aIndex;
	}		
	else
	{
		PLUINT32 aCIdx = iDSOBuckets[aBIdx];
		
		while(iDSOChains[aCIdx] != aNullPtr){

			/* If the entry is already added into the hash table*/
			if((PLUINT32)iDSOChains[aCIdx] == aIndex) {
				return;
			}
			aCIdx = iDSOChains[aCIdx];
		}
		iDSOChains[aCIdx] = aIndex;
	}
}

/**
This function creates the different sections of the Elf file
@internalComponent
@released
*/
void ElfProducer::CreateSections() {
	PLUINT32	aIdx = 0;

	//clear the first section...
	memset(&iSections[0], 0, sizeof(Elf32_Shdr));
	iDSOSectionNames.insert(iDSOSectionNames.begin(), 0);

	// Set the ELF file offset.
	// This indicates the start of sections.
	iElfFileOffset = sizeof(Elf32_Ehdr);

	iElfFileOffset += (sizeof(Elf32_Shdr) * iElfHeader->e_shnum);

	//Check if the string table is 4-byte aligned..
	AlignString(iDSOSymNameStrTbl);

	for(aIdx = 1; aIdx <= MAX_SECTIONS; aIdx++) {
		switch(aIdx)
		{
			case SYMBOL_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_DYNSYM, \
								   sizeof(Elf32_Sym), (iNSymbols * sizeof(Elf32_Sym)),\
								   STRING_SECTION, CODE_SECTION, 4, 0, 0);
				break;
			case STRING_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_STRTAB, \
								   1, iDSOSymNameStrTbl.size(), 0, \
								   0, 0, 0,0);
				break;
			case VERSION_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx], 0x6fffffff, \
								   sizeof(Elf32_Half), (iNSymbols * sizeof(Elf32_Half)), SYMBOL_SECTION, \
								   0, 2, 0, 0);
				break;
			case VER_DEF_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx],0x6ffffffd, \
								   sizeof(Elf32_Verdaux), (2*(sizeof(Elf32_Verdef) + sizeof(Elf32_Verdaux))),\
								   STRING_SECTION, DYNAMIC_SECTION, 4, 0, 0);
				break;
			case HASH_TBL_SECTION:
				{
					PLUINT32 aSize = sizeof(Elf32_HashTable) + \
							(sizeof(Elf32_Sword) * (iHashTbl->nBuckets + iHashTbl->nChains));

				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_HASH, \
								   0, aSize, SYMBOL_SECTION, 0, 4, 0, 0);
				}
				break;
			case DYNAMIC_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_DYNAMIC, \
								   sizeof(Elf32_Dyn), ((MAX_DYN_ENTS + 1) *sizeof(Elf32_Dyn)),\
								   STRING_SECTION, 0, 4, 0,0);
				break;
			case CODE_SECTION:
				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_PROGBITS, \
								   0, (iNSymbols *sizeof(PLUINT32)),\
								   0, 0, 4, (SHF_ALLOC | SHF_EXECINSTR),0);
				break;
			case SH_STR_SECTION:
				{
				PLUINT32 aSize = iDSOSectionNames.size() + strlen(SECTION_NAME[aIdx]);
				SetSectionFields(aIdx, SECTION_NAME[aIdx], SHT_STRTAB, \
								   1, aSize, 0, \
								   0, 0, 0, 0);
				//Check if the string table is 4-byte aligned..
				AlignString(iDSOSectionNames);
				iSections[aIdx].sh_size = iDSOSectionNames.size();

				}
				break;
			default:
				break;
		}
		iSections[aIdx].sh_offset = iElfFileOffset;
		iElfFileOffset += iSections[aIdx].sh_size;

		if(iElfFileOffset %4) {
			iElfFileOffset += (4 - (iElfFileOffset %4));
		}
	}
}

/**
This function sets the section header fields.
@internalComponent
@released
@return Error status
@param aSectionIndex The index of the section
@param aSectionName The name of the section
@param aType The type of the section
@param aEntSz The size of each entry of the section
@param aSectionSize The size of the section
@param aLink The section this section is linked to
@param aInfo Extra information. Depends on the section type of this section.
@param aAddrAlign The address alignment of this section.
@param aFlags Section flags
@param aAddr The address of this section in memory(Here it remains 0)
*/
void ElfProducer::SetSectionFields(PLUINT32 aSectionIndex, char* aSectionName, PLUINT32 aType, \
								   PLUINT32 aEntSz, PLUINT32 aSectionSize, PLUINT32 aLink, \
								   PLUINT32 aInfo, PLUINT32 aAddrAlign, PLUINT32 aFlags, \
								   PLUINT32 aAddr)
{
	String aSecName = aSectionName;

	iSections[aSectionIndex].sh_name			= iDSOSectionNames.size();
	iDSOSectionNames.insert(iDSOSectionNames.end(), aSecName.begin(), aSecName.end());
	iDSOSectionNames.insert(iDSOSectionNames.end(), 0);
	
	iSections[aSectionIndex].sh_type			= aType;
	iSections[aSectionIndex].sh_entsize		= aEntSz;
	iSections[aSectionIndex].sh_size			= aSectionSize;
	iSections[aSectionIndex].sh_link			= aLink;
	iSections[aSectionIndex].sh_flags		= aFlags;
	iSections[aSectionIndex].sh_addralign	= aAddrAlign;
	iSections[aSectionIndex].sh_info			= aInfo;
	iSections[aSectionIndex].sh_addr			= aAddr;
}

/**
This function cleans up the memory allocated to the Elf fields.
@internalComponent
@released
*/
void ElfProducer::Cleanup()
{
	DELETE_PTR(iElfHeader);
	DELETE_PTR_ARRAY(iSections);
	DELETE_PTR_ARRAY(iElfDynSym);
	DELETE_PTR_ARRAY(iVersionTbl);
	DELETE_PTR_ARRAY(iVersionDef);
	DELETE_PTR_ARRAY(iDSODaux);

	DELETE_PTR_ARRAY(iProgHeader);
	DELETE_PTR_ARRAY(iCodeSectionData);
	DELETE_PTR_ARRAY(iHashTbl);
	DELETE_PTR_ARRAY(iDSOBuckets);
	DELETE_PTR_ARRAY(iDSOChains);
}

/**
This function creates the dynamic sections.
@internalComponent
@released
*/
void ElfProducer::CreateDynamicEntries()
{
	for(PLUINT32 aIdx = 0; aIdx <= MAX_DYN_ENTS; aIdx++ ) {
		switch(aIdx) {
			case DSO_DT_DSONAME:
				iDSODynTbl[aIdx].d_tag = DT_SONAME;
				iDSODynTbl[aIdx].d_val = iDSONameOffset;
				break;
			case DSO_DT_SYMTAB:
				iDSODynTbl[aIdx].d_tag = DT_SYMTAB;
				iDSODynTbl[aIdx].d_val = iSections[SYMBOL_SECTION].sh_offset;
				break;
			case DSO_DT_SYMENT:
				iDSODynTbl[aIdx].d_tag = DT_SYMENT;
				iDSODynTbl[aIdx].d_val = iSections[SYMBOL_SECTION].sh_entsize;
				break;
			case DSO_DT_STRTAB:
				iDSODynTbl[aIdx].d_tag = DT_STRTAB;
				iDSODynTbl[aIdx].d_val = iSections[STRING_SECTION].sh_offset;
				break;
			case DSO_DT_STRSZ:
				iDSODynTbl[aIdx].d_tag = DT_STRSZ;
				iDSODynTbl[aIdx].d_val = iDSOSymNameStrTbl.size();
				break;
			case DSO_DT_VERSYM:
				iDSODynTbl[aIdx].d_tag = DT_VERSYM;
				iDSODynTbl[aIdx].d_val = iSections[VERSION_SECTION].sh_offset;
				break;
			case DSO_DT_VERDEF:
				iDSODynTbl[aIdx].d_tag = DT_VERDEF;
				iDSODynTbl[aIdx].d_val = iSections[VER_DEF_SECTION].sh_offset;
				break;
			case DSO_DT_VERDEFNUM:
				iDSODynTbl[aIdx].d_tag = DT_VERDEFNUM;
				iDSODynTbl[aIdx].d_val = 2;
				break;
			case DSO_DT_HASH:
				iDSODynTbl[aIdx].d_tag = DT_HASH;
				iDSODynTbl[aIdx].d_val = iSections[HASH_TBL_SECTION].sh_offset;
				break;
			case DSO_DT_NULL:
				iDSODynTbl[aIdx].d_tag = DT_NULL;
				iDSODynTbl[aIdx].d_val = 0;
				break;
			default:
				break;
		}
	}
}

/**
This function creates the Elf header.
@internalComponent
@released
*/
void ElfProducer::CreateElfHeader()
{
	//create ELF header
	unsigned char c[EI_NIDENT] = {0x7f, 'E', 'L', 'F', \
				ELFCLASS32, ELFDATA2LSB, 1, 0, \
				0, 0, 0, 0, \
				0, 0, 0, 0};       // e_ident

	for (PLUINT32 i=0; i <EI_NIDENT;i++)
		iElfHeader->e_ident[i] = c[i];

	iElfHeader->e_type		= ET_DYN;
	iElfHeader->e_machine	= EM_ARM;
	iElfHeader->e_version	= EV_CURRENT;
	iElfHeader->e_entry		= 0;
	iElfHeader->e_shoff		= sizeof(Elf32_Ehdr);
	iElfHeader->e_flags		= EF_ARM_BPABI_VERSION | EF_ARM_SYMSARESORTED;
	iElfHeader->e_ehsize	= sizeof(Elf32_Ehdr);
	iElfHeader->e_phentsize = sizeof(Elf32_Phdr);
	iElfHeader->e_shentsize = sizeof(Elf32_Shdr);
	iElfHeader->e_shnum		= MAX_SECTIONS + 1;
	iElfHeader->e_shstrndx	= SH_STR_SECTION;
	iElfHeader->e_phnum		= 2;
}

/**
This function creates the program header
@internalComponent
@released
*/
void ElfProducer::CreateProgHeader()
{
	//Update the program header offset..
	iElfHeader->e_phoff		= iElfFileOffset;

	// Update code section data..
	SymbolList::iterator aItr = iSymbolsList->begin();
	SymbolList::iterator end  = iSymbolsList->end();

	Symbol *aSym;
	PLUINT32	aPos = 0;
	while(aItr != end) {
		aSym = *aItr;

		iCodeSectionData[aPos] = aSym->OrdNum();
		aItr++;aPos++;
	}

	//Create program header
	iProgHeader[0].p_align	= 4;
	iProgHeader[0].p_offset = iSections[CODE_SECTION].sh_offset;
	iProgHeader[0].p_type	= PT_LOAD;
	iProgHeader[0].p_flags	= (PF_X | PF_ARM_ENTRY);
	iProgHeader[0].p_filesz = iSections[CODE_SECTION].sh_size;
	iProgHeader[0].p_paddr	= 0;
	iProgHeader[0].p_vaddr	= 0;
	iProgHeader[0].p_memsz  = iSections[CODE_SECTION].sh_size;

	iProgHeader[1].p_align	= 4;
	iProgHeader[1].p_offset = iSections[DYNAMIC_SECTION].sh_offset;
	iProgHeader[1].p_type	= PT_DYNAMIC;
	iProgHeader[1].p_flags	= (PF_R );
	iProgHeader[1].p_filesz = iSections[DYNAMIC_SECTION].sh_size;
	iProgHeader[1].p_paddr	= 0;
	iProgHeader[1].p_vaddr	= 0;
	iProgHeader[1].p_memsz  = 0;

}

/**
This function aligns the string table to a 4-byte boundary
@internalComponent
@released
@return Error status
@param aStr - string to be aligned
*/
void ElfProducer::AlignString(String& aStr) {

	if( aStr.size() %4 ){
		PLUCHAR	aPad = (PLUCHAR)(4 - (aStr.size() %4));

		while(aPad--) {
			aStr.insert(aStr.end(), 0);
		}
	}
}

/**
This function writes the Elf file contents.
@internalComponent
@released
*/
void ElfProducer::WriteElfContents()
{
	FILE		*aElfFd;
	PLUINT32	aIndex;
	
	if((aElfFd = fopen(iDsoFullName.c_str(), "wb")) == NULL ) {
		throw FileError(FILEOPENERROR, (char*)iDsoFullName.c_str());
	}

	// The ELF header..
	fwrite(iElfHeader, 1, sizeof(Elf32_Ehdr), aElfFd);
	
	//Section headers
	for(aIndex = 0; aIndex <= MAX_SECTIONS; aIndex++) {
		fwrite(&iSections[aIndex], 1, sizeof(Elf32_Shdr), aElfFd);
	}


	//Each section..

		//code
		for(aIndex = 0; aIndex < iNSymbols; aIndex++) {
			fwrite(&iCodeSectionData[aIndex], 1, sizeof(PLUINT32), aElfFd );
		}
		
		//dyn table
		for(aIndex = 0; aIndex <= MAX_DYN_ENTS; aIndex++) {
			fwrite(&iDSODynTbl[aIndex], 1, sizeof(Elf32_Dyn), aElfFd);
		}

		//hash table
		fwrite(&iHashTbl->nBuckets, 1, sizeof(Elf32_Word), aElfFd);
		fwrite(&iHashTbl->nChains, 1, sizeof(Elf32_Word), aElfFd);

		for(aIndex=0; aIndex < iHashTbl->nBuckets; aIndex++) {
			fwrite(&iDSOBuckets[aIndex], 1, sizeof(Elf32_Sword), aElfFd);

		}
		for(aIndex=0; aIndex < iHashTbl->nChains; aIndex++) {
			fwrite(&iDSOChains[aIndex], 1, sizeof(Elf32_Sword), aElfFd);
			
		}

		//version def table
		for(aIndex = 0; aIndex < 2; aIndex++) {
			fwrite(&iVersionDef[aIndex], 1, sizeof(Elf32_Verdef), aElfFd);
			fwrite(&iDSODaux[aIndex], 1, sizeof(Elf32_Verdaux), aElfFd);
		}

		//version table
		for(aIndex = 0; aIndex < iNSymbols; aIndex++) {
			fwrite(&iVersionTbl[aIndex], 1, sizeof(Elf32_Half), aElfFd );
		}

		if( iSections[VERSION_SECTION].sh_size %4 ) {
			PLUINT32 aNPads = 4 - (iSections[VERSION_SECTION].sh_size %4);
			PLUCHAR aPad = '\0';
			while(aNPads--) {
				fwrite(&aPad, 1, 1, aElfFd);
			}
		}

		//string table
		PLUINT32 aSz = iDSOSymNameStrTbl.size();
		char *aData = new char[aSz];
		memcpy(aData, iDSOSymNameStrTbl.data(), aSz);
		fwrite(aData, 1, aSz, aElfFd);

		DELETE_PTR_ARRAY(aData);

		//Sym table
		for(aIndex = 0; aIndex < iNSymbols; aIndex ++) {
			fwrite(&iElfDynSym[aIndex], 1, sizeof(Elf32_Sym), aElfFd);
		}

		//section header name table
		aSz = iDSOSectionNames.size();
		char *aData1 = new char[ aSz];
		memcpy(aData1, iDSOSectionNames.data(), aSz);
		fwrite(aData1, 1, aSz, aElfFd);
		DELETE_PTR_ARRAY(aData1);

	//program header
	for(aIndex = 0; aIndex < 2; aIndex++) {
		fwrite(&iProgHeader[aIndex], 1, sizeof(Elf32_Phdr), aElfFd );
	}

	fclose(aElfFd);
}