/*

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

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

* 

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <iostream>

#include "dwarfmanager.h"

#include "inputfile.h"

const string DwarfPubnamesManager::iPubnamesSectionName(".debug_pubnames");

const string DwarfPubtypesManager::iPubtypesSectionName(".debug_pubtypes");

void DwarfNameManager::ProcessSection(FileShdrPair & aPair, Dwarf_Byte_Ptr aStart, Dwarf_Byte_Ptr aEnd){

	Dwarf_Byte_Ptr start = aStart;

	Dwarf_Byte_Ptr end = aEnd;

	while (start < end){

		Dwarf_Byte_Ptr data = start;

		size_t offset_size, initial_length_size;

		Dwarf_Word length = READ_UNALIGNED4(data); 

		data += 4;

		if (length >= 0xfffffff0u) {

			cerr << "Error: 64 bit DWARF not supported\n";

			exit(EXIT_FAILURE);

		} else {	

			offset_size = 4;

			initial_length_size = 4;

		}

		Dwarf_Half version = READ_UNALIGNED2(data);

		data += 2;

		Dwarf_Word offset = GetValue(data, offset_size); 

		Dwarf_Word newOffset = CheckNewOffset(iDwarfInfoManager.GetSectionOffset(aPair.iXIPFileDetails.iElfFile), offset);

		if (offset != newOffset)

			WriteValue(data, offset, offset_size);

		data += offset_size;

		//Dwarf_Word size = GetValue(data, offset_size);

		// Don't need the length field

		data += offset_size;

		start += length + initial_length_size;

		if (version != 2 && version != 3){

			static bool warned = false;

			if (!warned){

				cerr << "Only DWARF 2 and 3 pubnames are currently supported\n";

				warned = true;

			}

			continue;

		}

		do {

			offset = GetValue(data, offset_size);

			if (offset != 0)

			{

				data += offset_size;

				data += strlen ((char *) data) + 1;

			}

		}

		while (offset != 0);

	}

}