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 DwarfPubnamesManager::iPubnamesSectionName(".debug_pubnames");

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

    25 

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

    27 	Dwarf_Byte_Ptr start = aStart;

    28 	Dwarf_Byte_Ptr end = aEnd;

    29 	while (start < end){

    30 		Dwarf_Byte_Ptr data = start;

    31 		size_t offset_size, initial_length_size;

    32 

    33 		Dwarf_Word length = READ_UNALIGNED4(data); 

    34 		data += 4;

    35 

    36 		if (length >= 0xfffffff0u) {

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

    38 			exit(EXIT_FAILURE);

    39 		} else {	

    40 			offset_size = 4;

    41 			initial_length_size = 4;

    42 		}

    43 

    44 		Dwarf_Half version = READ_UNALIGNED2(data);

    45 		data += 2;

    46 

    47 		Dwarf_Word offset = GetValue(data, offset_size); 

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

    49 		if (offset != newOffset)

    50 			WriteValue(data, offset, offset_size);

    51 		data += offset_size;

    52 

    53 

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

    55 		// Don't need the length field

    56 		data += offset_size;

    57 

    58 		start += length + initial_length_size;

    59 

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

    61 			static bool warned = false;

    62 			if (!warned){

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

    64 				warned = true;

    65 			}

    66 

    67 			continue;

    68 		}

    69 

    70 		do {

    71 			offset = GetValue(data, offset_size);

    72 

    73 			if (offset != 0)

    74 			{

    75 				data += offset_size;

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

    77 			}

    78 		}

    79 		while (offset != 0);

    80 	}

    81 }