/*+
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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* All rights reserved.+
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*+
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* This program is free software: you can redistribute it and/or modify+
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* it under the terms of the GNU Lesser General Public License as published by+
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* the Free Software Foundation, either version 3 of the License, or+
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* (at your option) any later version.+
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*+
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* This program is distributed in the hope that it will be useful,+
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* but WITHOUT ANY WARRANTY; without even the implied warranty of+
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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* GNU Lesser General Public License for more details.+
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* +
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* You should have received a copy of the GNU Lesser General Public License+
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* along with this program.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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+
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#include <string.h>+
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+
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#include "elfsectionmanager.h"+
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+
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void ElfSectionManager::GetFileFragmentData(FileFragmentData & aFileFragmentData ){+
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	int nSections = iSections.size();+
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	if (nSections > 0){+
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		iData = new Elf32_Shdr[nSections];+
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		Elf32_Shdr * p = iData;+
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		SectionList::iterator aSection = iSections.begin();+
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		SectionList::iterator end = iSections.end();+
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		while (aSection != end) {+
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			*p = aSection->GetSectionHeader().iElf32Shdr;+
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			p++;+
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			aSection++;+
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		}+
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		SetFileFragmentData(aFileFragmentData, Size(), reinterpret_cast<char *>(iData));+
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	}+
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}+
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+
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size_t ElfSectionManager::Size(){+
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	return SectionHeaderSize();+
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}+
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+
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void ElfSectionManager::DeleteFileFragmentData(){+
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	if (iData) {+
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		Elf32_Shdr * d = iData;+
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		iData = NULL;+
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		delete[] d;+
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	}+
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}+
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+
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void ElfSectionManager::AddData(){+
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	AddData(iOutputFile);+
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}+
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+
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void ElfSectionManager::AddData(OutputFile & aOutputFile){+
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	if (iSections.size() > 0) {+
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		SectionList::iterator aSection = iSections.begin();+
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		SectionList::iterator end = iSections.end();+
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		while (aSection != end) {+
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			aSection->AddData(aOutputFile);+
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			aSection++;+
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		}+
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		AddSectionTable();+
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	}+
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}+
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+
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void ElfSectionManager::EnsureSectionStringTableSectionAdded(){+
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	if (iSectionStringTableSectionAdded) return;+
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	+
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	// set iSectionStringTableSectionAdded true now so we don't do the next bit twice;+
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	iSectionStringTableSectionAdded = true;+
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+
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	// first create the UNDEF section+
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	ElfSectionNoData * aUndefData = new ElfSectionNoData();+
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	+
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	Elf32_Shdr undef;+
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	undef.sh_name = 0; +
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	undef.sh_type = SHT_NULL;+
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	undef.sh_flags = 0;+
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	undef.sh_addr = 0;+
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	undef.sh_offset = 0; +
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	undef.sh_size = 0; +
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	undef.sh_link = 0;+
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	undef.sh_info = 0;+
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	undef.sh_addralign = 0;+
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	undef.sh_entsize = 0;+
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	+
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	ElfSection aUndefSection(aUndefData, "", undef);+
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	AddSection(aUndefSection);+
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	+
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	ElfSectionElfData * aSectionStringTableSectionData = new ElfSectionElfData(iStringTable);+
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	Elf32_Shdr shdr;+
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	shdr.sh_name = 0; // for now.+
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	shdr.sh_type = SHT_STRTAB;+
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	shdr.sh_flags = 0;+
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	shdr.sh_addr = 0;+
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	shdr.sh_offset = 0; // for now+
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	shdr.sh_size = 0; // for now.+
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	shdr.sh_link = SHN_UNDEF;+
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	shdr.sh_info = 0;+
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	shdr.sh_addralign = 0;+
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	shdr.sh_entsize = 0;+
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+
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	ElfSection aSectionStringTableSection(aSectionStringTableSectionData, ".shstrtab", shdr);+
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	AddSection(aSectionStringTableSection);+
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	iElf32Header.SetSectionStringNdx(iSections.size() - 1);+
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}+
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void ElfSectionManager::AddSection(ElfSection & aSection){+
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	EnsureSectionStringTableSectionAdded();+
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	if (aSection.GetName().size() > 0){+
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		// rename sections for GDB (yuk!)+
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		String sectionName(aSection.GetName());+
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		String ro("ER_RO");+
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		String text(".text");+
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		if (sectionName == ro){+
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			sectionName = text;+
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		} else {+
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			String rw("ER_RW");+
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			String data(".data");+
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			if (sectionName == rw){+
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				sectionName = data;+
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			} else {+
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				String zi("ER_ZI");+
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				String bss(".bss");+
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				if (sectionName == zi)+
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					sectionName = bss;+
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			}+
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		}+
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		size_t nameOffset = iStringTable.AddName(sectionName);+
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		aSection.SetNameOffset(nameOffset);+
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	} else {+
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		// use the initial Null String.+
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		size_t nameOffset = iStringTable.AllocateInitialNullString();+
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		aSection.SetNameOffset(nameOffset);+
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	}+
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	aSection.SetIndex(iSections.size());+
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	iSections.push_back(aSection);+
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	iElf32Header.AddSectionHdr();+
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}+
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	+
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size_t ElfSectionManager::SectionHeaderSize(){+
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	return iSections.size() * sizeof(Elf32_Shdr);+
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}+
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+
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void ElfSectionManager::AddSectionStringTable(){+
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	// Assume the section header already setup and we've got hold of it. We need to say where the strings ended up.+
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	const FileFragment & aSectionTableFrag = iOutputFile.GetFileFragment(this);	+
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	SetOffset(aSectionTableFrag.GetOffset());+
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}+
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+
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void ElfSectionManager::AddSectionTable(){+
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	const FileFragment & aSectionTableFrag = iOutputFile.GetFileFragment(this);	+
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	SetOffset(aSectionTableFrag.GetOffset());+
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	iElf32Header.SetSectionHdrOffset(GetOffset());+
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}+
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