/*

* 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 DwarfLocManager::iLocSectionName(".debug_loc");

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

	Dwarf_Byte_Ptr start = aStart;

	Dwarf_Byte_Ptr end = aEnd;

	size_t pointer_size = iDwarfInfoManager.GetPointerSize();

	while (start < end){

		// TODO: this doesn't deal with 64-bit Dwarf

		Dwarf_Byte_Ptr lower = start;

		Dwarf_Word w1 = GetValue(start, pointer_size);

		start+= pointer_size;

		Dwarf_Byte_Ptr upper = start;

		Dwarf_Word w2  = GetValue(start, pointer_size);

		start+= pointer_size;

		if (w1 == 0 && w2 == 0){

			continue;

		}

		if (w1 == 0xffffffff){

			LinearAddr addr = w2;

			LinearAddr relocatedAddress = aPair.iXIPFileDetails.Relocate(addr);

			if (addr != relocatedAddress)

				WriteValue(start - pointer_size, relocatedAddress, pointer_size);

			continue;

		}

		if (aPair.iXIPFileDetails.iGCCProduced){

			LinearAddr addr = w1;

			LinearAddr relocatedAddress = aPair.iXIPFileDetails.Relocate(addr);

			if (addr != relocatedAddress)

				WriteValue(lower, relocatedAddress, pointer_size);			

			addr = w2;

			relocatedAddress = aPair.iXIPFileDetails.Relocate(addr);

			if (addr != relocatedAddress)

				WriteValue(upper, relocatedAddress, pointer_size);			

		}

		Dwarf_Half length = GetValue(start, 2);

		start += 2;

		EditLocationExpression (start, pointer_size, length, aPair);		

		start += length;

	}

}