1 /*

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

     3 * All rights reserved.

     4 *

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

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

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

     8 * (at your option) any later version.

     9 *

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

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

    12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13 * GNU Lesser General Public License for more details.

    14 * 

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

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

    17 */

    18 

    19 #include <iostream>

    20 #include "dwarfmanager.h"

    21 #include "inputfile.h"

    22 

    23 const string DwarfLocManager::iLocSectionName(".debug_loc");

    24 

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

    26 	Dwarf_Byte_Ptr start = aStart;

    27 	Dwarf_Byte_Ptr end = aEnd;

    28 	size_t pointer_size = iDwarfInfoManager.GetPointerSize();

    29 	while (start < end){

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

    31 		Dwarf_Byte_Ptr lower = start;

    32 		Dwarf_Word w1 = GetValue(start, pointer_size);

    33 		start+= pointer_size;

    34 		Dwarf_Byte_Ptr upper = start;

    35 		Dwarf_Word w2  = GetValue(start, pointer_size);

    36 		start+= pointer_size;

    37 

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

    39 			continue;

    40 		}

    41 		if (w1 == 0xffffffff){

    42 			LinearAddr addr = w2;

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

    44 			if (addr != relocatedAddress)

    45 				WriteValue(start - pointer_size, relocatedAddress, pointer_size);

    46 			continue;

    47 		}

    48 

    49 		if (aPair.iXIPFileDetails.iGCCProduced){

    50 			LinearAddr addr = w1;

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

    52 			if (addr != relocatedAddress)

    53 				WriteValue(lower, relocatedAddress, pointer_size);			

    54 			addr = w2;

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

    56 			if (addr != relocatedAddress)

    57 				WriteValue(upper, relocatedAddress, pointer_size);			

    58 		}

    59 		

    60 		Dwarf_Half length = GetValue(start, 2);

    61 		start += 2;

    62 		EditLocationExpression (start, pointer_size, length, aPair);		

    63 		start += length;

    64 

    65 	}

    66 }