1 | /* -*- c++ -*- |
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2 | * |
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3 | * SOCLIB_LGPL_HEADER_BEGIN |
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4 | * |
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5 | * This file is part of SoCLib, GNU LGPLv2.1. |
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6 | * |
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7 | * SoCLib is free software; you can redistribute vSO and/or modify vSO |
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8 | * under the terms of the GNU Lesser General Public License as published |
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9 | * by the Free Software Foundation; version 2.1 of the License. |
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10 | * |
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11 | * SoCLib is distributed in the hope that vSO will be useful, but |
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12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with SoCLib; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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19 | * 02110-1301 USA |
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20 | * |
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21 | * SOCLIB_LGPL_HEADER_END |
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22 | * |
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23 | * Copyright (c) UPMC, Lip6, SoC |
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24 | * Mohamed Lamine KARAOUI <Mohamed.Karaoui@lip6.fr>, 2012 |
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25 | */ |
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26 | |
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27 | #include <string.h> |
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28 | #include <cassert> |
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29 | #include <sstream> |
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30 | #include <fstream> |
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31 | #include <ios> |
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32 | #include <iostream> |
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33 | #include <cstdarg> |
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34 | #include <cassert> |
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35 | #include <iomanip> |
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36 | |
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37 | |
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38 | #include "exception.h" |
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39 | #include "mover.h" |
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40 | |
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41 | |
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42 | #define MOVER_DEBUG |
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43 | |
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44 | Mover::Mover( const std::string &filename, |
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45 | const size_t pageSize) |
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46 | :m_path(filename), |
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47 | m_pathHandler(filename), |
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48 | m_ginit(false), |
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49 | m_generator(new elfpp::object()) |
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50 | { |
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51 | |
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52 | PSeg::setPageSize(pageSize); |
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53 | |
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54 | load_bin(m_path); |
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55 | |
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56 | #ifdef MOVER_DEBUG |
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57 | std::cout << "Binary file path: " << m_path << std::endl; |
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58 | //print_mapping_info(m_data); |
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59 | #endif |
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60 | |
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61 | buildMap(m_data); |
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62 | |
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63 | #ifdef MOVER_DEBUG |
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64 | std::cout << "parsing done" << std::endl ; |
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65 | #endif |
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66 | |
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67 | #ifdef MOVER_DEBUG |
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68 | print_mapping(); |
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69 | std::cout << *this << std::endl; |
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70 | #endif |
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71 | |
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72 | m_psegh.check(); |
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73 | #ifdef MOVER_DEBUG |
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74 | std::cout << "checking done" << std::endl ; |
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75 | #endif |
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76 | |
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77 | } |
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78 | |
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79 | void Mover::print( std::ostream &o ) const |
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80 | { |
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81 | std::cout << "All sections:" << std::endl; |
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82 | FOREACH( sect, m_generator->get_section_table() ) |
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83 | { |
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84 | assert(&*sect != NULL); |
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85 | std::cout << *sect << std::endl; |
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86 | } |
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87 | } |
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88 | |
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89 | void Mover::print_mapping() const |
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90 | { |
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91 | std::cout << m_psegh << std::endl; |
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92 | } |
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93 | |
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94 | //TODO:delete |
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95 | elfpp::section* Mover::get_sect_by_addr(elfpp::object *loader, unsigned int addr) |
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96 | { |
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97 | FOREACH( sect, loader->get_section_table() ) |
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98 | { |
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99 | assert(&*sect != NULL); |
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100 | elfpp::sh_flags_e eflags = sect->get_flags(); |
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101 | if ( !(eflags & elfpp::SHF_ALLOC) ) |
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102 | continue; |
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103 | if(sect->get_load_address() == addr) //load_addr ? |
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104 | { |
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105 | return (&*sect); |
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106 | } |
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107 | } |
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108 | return NULL; |
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109 | } |
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110 | elfpp::section* Mover::get_sect_by_name(elfpp::object *loader, std::string name) |
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111 | { |
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112 | #ifdef MOVER_DEBUG |
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113 | std::cout << "get_sect_by_name " << name << std::endl; |
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114 | #endif |
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115 | FOREACH( sect, loader->get_section_table() ) |
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116 | { |
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117 | assert(&*sect != NULL); |
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118 | elfpp::sh_flags_e eflags = sect->get_flags(); |
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119 | if ( !(eflags & elfpp::SHF_ALLOC) ) |
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120 | continue; |
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121 | |
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122 | #ifdef MOVER_DEBUG |
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123 | std::cout << "Trying " << sect->get_name() << std::endl; |
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124 | #endif |
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125 | if(!(sect->get_name()).compare(name)) |
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126 | { |
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127 | return (&*sect); |
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128 | } |
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129 | } |
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130 | return NULL; |
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131 | } |
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132 | |
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133 | void Mover::buildSoft(const std::string &filename) |
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134 | { |
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135 | if(!m_ginit) |
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136 | throw soclib::exception::RunTimeError(std::string("Can't get generator! ") ); |
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137 | |
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138 | m_generator->write(filename); |
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139 | |
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140 | } |
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141 | |
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142 | void* Mover::load_bin(std::string filename) |
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143 | { |
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144 | |
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145 | #ifdef MOVER_DEBUG |
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146 | std::cout << "Trying to load the binary blob from file '" << m_path << "'" << std::endl; |
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147 | #endif |
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148 | |
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149 | std::ifstream input(m_path.c_str(), std::ios_base::binary|std::ios_base::in); |
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150 | |
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151 | if ( ! input.good() ) |
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152 | throw soclib::exception::RunTimeError(std::string("Can't open the file: ") + m_path); |
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153 | |
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154 | input.seekg( 0, std::ifstream::end ); |
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155 | m_size = input.tellg(); |
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156 | input.seekg( 0, std::ifstream::beg ); |
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157 | |
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158 | //m_data = new void*[m_size]; |
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159 | m_data = std::malloc(m_size); |
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160 | if ( !m_data ) |
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161 | throw soclib::exception::RunTimeError("malloc failed... No memory space"); |
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162 | |
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163 | input.read( (char*)m_data, m_size ); |
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164 | |
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165 | return m_data; |
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166 | } |
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167 | |
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168 | |
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169 | Mover::~Mover() |
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170 | { |
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171 | //std::cout << "Deleted Mover " << *this << std::endl; |
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172 | std::free(m_data); |
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173 | std::map<std::string, elfpp::object*>::iterator l; |
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174 | for(l = m_loaders.begin(); l != m_loaders.end(); l++) |
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175 | { |
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176 | delete (*l).second; |
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177 | } |
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178 | //delete m_generator; |
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179 | } |
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180 | |
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181 | |
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182 | ///////////////////////////////////////////////////////////////////////////// |
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183 | // various mapping_info data structure access functions |
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184 | ///////////////////////////////////////////////////////////////////////////// |
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185 | |
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186 | ///////////////////////////////////////////////////////////////////////////// |
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187 | mapping_pseg_t* Mover::get_pseg_base( mapping_header_t* header ) |
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188 | { |
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189 | return (mapping_pseg_t*) ((char*)header + |
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190 | MAPPING_HEADER_SIZE + |
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191 | MAPPING_CLUSTER_SIZE*header->clusters); |
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192 | } |
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193 | ///////////////////////////////////////////////////////////////////////////// |
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194 | mapping_vspace_t* Mover::get_vspace_base( mapping_header_t* header ) |
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195 | { |
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196 | return (mapping_vspace_t*) ((char*)header + |
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197 | MAPPING_HEADER_SIZE + |
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198 | MAPPING_CLUSTER_SIZE*header->clusters + |
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199 | MAPPING_PSEG_SIZE*header->psegs); |
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200 | } |
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201 | ///////////////////////////////////////////////////////////////////////////// |
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202 | mapping_vseg_t* Mover::get_vseg_base( mapping_header_t* header ) |
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203 | { |
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204 | return (mapping_vseg_t*) ((char*)header + |
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205 | MAPPING_HEADER_SIZE + |
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206 | MAPPING_CLUSTER_SIZE*header->clusters + |
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207 | MAPPING_PSEG_SIZE*header->psegs + |
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208 | MAPPING_VSPACE_SIZE*header->vspaces); |
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209 | } |
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210 | ///////////////////////////////////////////////////////////////////////////// |
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211 | mapping_vobj_t* Mover::get_vobj_base( mapping_header_t* header ) |
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212 | { |
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213 | return (mapping_vobj_t*) ((char*)header + |
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214 | MAPPING_HEADER_SIZE + |
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215 | MAPPING_CLUSTER_SIZE*header->clusters + |
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216 | MAPPING_PSEG_SIZE*header->psegs + |
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217 | MAPPING_VSPACE_SIZE*header->vsegs + |
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218 | MAPPING_VSPACE_SIZE*header->vspaces); |
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219 | } |
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220 | |
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221 | ///////////////////////////////////////////////////////////////////////////// |
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222 | // print the content of the mapping_info data structure |
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223 | //////////////////////////////////////////////////////////////////////// |
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224 | void Mover::print_mapping_info(void* desc) |
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225 | { |
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226 | mapping_header_t* header = (mapping_header_t*)desc; |
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227 | |
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228 | mapping_pseg_t* pseg = get_pseg_base( header );; |
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229 | mapping_vspace_t* vspace = get_vspace_base ( header );; |
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230 | mapping_vseg_t* vseg = get_vseg_base ( header ); |
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231 | mapping_vobj_t* vobj = get_vobj_base ( header ); |
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232 | |
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233 | // header |
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234 | std::cout << std::hex << "mapping_info" << std::endl |
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235 | << " + signature = " << header->signature << std::endl |
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236 | << " + name = " << header->name << std::endl |
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237 | << " + clusters = " << header->clusters << std::endl |
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238 | << " + psegs = " << header->psegs << std::endl |
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239 | << " + ttys = " << header->ttys << std::endl |
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240 | << " + vspaces = " << header->vspaces << std::endl |
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241 | << " + globals = " << header->globals << std::endl |
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242 | << " + vsegs = " << header->vsegs << std::endl |
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243 | << " + tasks = " << header->tasks << std::endl; |
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244 | |
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245 | // psegs |
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246 | for ( size_t pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ ) |
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247 | { |
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248 | std::cout << "pseg " << pseg_id << std::endl |
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249 | << " + name = " << pseg[pseg_id].name << std::endl |
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250 | << " + base = " << pseg[pseg_id].base << std::endl |
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251 | << " + length = " << pseg[pseg_id].length << std::endl ; |
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252 | } |
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253 | |
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254 | // globals |
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255 | for ( size_t vseg_id = 0 ; vseg_id < header->globals ; vseg_id++ ) |
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256 | { |
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257 | std::cout << "global vseg: " << vseg_id << std::endl |
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258 | << " + name = " << vseg[vseg_id].name << std::endl |
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259 | << " + vbase = " << vseg[vseg_id].vbase << std::endl |
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260 | << " + length = " << vseg[vseg_id].length << std::endl |
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261 | << " + mode = " << (size_t)vseg[vseg_id].mode << std::endl |
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262 | << " + ident = " << (bool)vseg[vseg_id].ident << std::endl |
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263 | << " + psegname" << pseg[vseg[vseg_id].psegid].name << std::endl; |
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264 | for(size_t vobj_id = vseg[vseg_id].vobj_offset ; vobj_id < vseg[vseg_id].vobj_offset + vseg[vseg_id].vobjs ; vobj_id++ ) |
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265 | { |
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266 | std::cout << "\t vobjs = "<< vobj[vobj_id].name << std::endl; |
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267 | std::cout<<"\t name =" << vobj[vobj_id].name <<std::endl; |
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268 | std::cout<<"\t type =" << vobj[vobj_id].type <<std::endl; |
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269 | std::cout<<"\t length =" << vobj[vobj_id].length <<std::endl; |
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270 | std::cout<<"\t align =" << vobj[vobj_id].align <<std::endl; |
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271 | std::cout<<"\t binpath =" << vobj[vobj_id].binpath <<std::endl; |
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272 | std::cout<<"\t \n"; |
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273 | } |
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274 | } |
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275 | |
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276 | |
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277 | // vspaces |
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278 | for ( size_t vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ ) |
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279 | { |
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280 | std::cout << "***vspace: " << vspace_id << "***" << std::endl |
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281 | << " + name = " << vspace[vspace_id].name << std::endl |
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282 | << " + ttys = " << vspace[vspace_id].ttys << std::endl; |
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283 | |
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284 | for ( size_t vseg_id = vspace[vspace_id].vseg_offset ; |
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285 | vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs) ; |
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286 | vseg_id++ ) |
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287 | { |
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288 | std::cout << "private vseg: "; |
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289 | std::cout << vseg_id << std::endl |
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290 | << " + name = " << vseg[vseg_id].name << std::endl |
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291 | << " + vbase = " << vseg[vseg_id].vbase << std::endl |
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292 | << " + length = " << vseg[vseg_id].length << std::endl |
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293 | << " + mode = " << (size_t)vseg[vseg_id].mode << std::endl |
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294 | << " + ident = " << (bool)vseg[vseg_id].ident << std::endl |
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295 | << " + psegname = " << pseg[vseg[vseg_id].psegid].name << std::endl << std::endl; |
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296 | for(size_t vobj_id = vseg[vseg_id].vobj_offset ; vobj_id < vseg[vseg_id].vobj_offset + vseg[vseg_id].vobjs ; vobj_id++ ) |
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297 | { |
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298 | std::cout<<"\t\t vobjs =" << vobj[vobj_id].name <<std::endl; |
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299 | std::cout<<"\t\t name =" << vobj[vobj_id].name <<std::endl; |
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300 | std::cout<<"\t\t type =" << vobj[vobj_id].type <<std::endl; |
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301 | std::cout<<"\t\t length =" << vobj[vobj_id].length <<std::endl; |
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302 | std::cout<<"\t\t align =" << vobj[vobj_id].align <<std::endl; |
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303 | std::cout<<"\t\t binpath =" << vobj[vobj_id].binpath <<std::endl; |
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304 | } |
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305 | } |
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306 | |
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307 | } |
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308 | } // end print_mapping_info() |
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309 | |
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310 | /////////////////////////////////////////////////////////////////////////// |
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311 | void Mover::pseg_map( mapping_pseg_t* pseg) |
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312 | { |
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313 | std::string name(pseg->name); |
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314 | m_psegh.m_pSegs.push_back(PSeg(name, pseg->base, pseg->length)); |
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315 | } |
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316 | |
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317 | |
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318 | /////////////////////////////////////////////////////////////////////////// |
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319 | void Mover::vseg_map( mapping_vseg_t* vseg) |
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320 | { |
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321 | |
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322 | mapping_vobj_t* vobj = get_vobj_base( (mapping_header_t*) m_data ); |
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323 | PSeg *ps = &(m_psegh.get(vseg->psegid));// get physical segment pointer(PSegHandler::get) |
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324 | elfpp::section* sect = NULL; |
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325 | size_t cur_vaddr; |
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326 | size_t cur_paddr; |
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327 | bool first = true; |
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328 | bool aligned = false; |
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329 | |
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330 | VSeg *vSO = new VSeg; |
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331 | |
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332 | vSO->m_name = std::string(vseg->name); |
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333 | vSO->m_vma = vseg->vbase; |
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334 | vSO->m_lma = ps->nextLma(); |
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335 | |
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336 | cur_vaddr = vseg->vbase; |
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337 | cur_paddr = ps->nextLma(); |
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338 | |
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339 | mapping_vobj_t* cur_vobj; |
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340 | size_t simple_size = 0; //for debug |
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341 | |
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342 | #ifdef MOVER_DEBUG |
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343 | std::cout << "--------------------vseg_map "<< vseg->name <<"---------------------" << std::endl; |
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344 | #endif |
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345 | |
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346 | for ( size_t vobj_id = vseg->vobj_offset ; vobj_id < (vseg->vobj_offset + vseg->vobjs) ; vobj_id++ ) |
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347 | { |
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348 | cur_vobj = &vobj[vobj_id]; |
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349 | |
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350 | #ifdef MOVER_DEBUG |
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351 | std::cout << "current vobj("<< vobj_id <<"): " << cur_vobj->name << " (" <<cur_vobj->vaddr << ")" |
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352 | << " size: "<< cur_vobj->length << " type: " << cur_vobj->type << std::endl; |
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353 | #endif |
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354 | |
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355 | if(cur_vobj->type == ELF) |
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356 | { |
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357 | if(!first) |
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358 | throw soclib::exception::RunTimeError(std::string("elf vobj type, must be placed first in a vseg")); |
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359 | |
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360 | size_t elf_size; |
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361 | std::string filePath(m_pathHandler.getFullPath(std::string(cur_vobj->binpath))); |
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362 | #ifdef MOVER_DEBUG |
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363 | std::cout << "Handling: " << filePath << " ..." << std::endl; |
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364 | #endif |
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365 | if(!filePath.compare(m_path)) //local blob: map_info |
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366 | { |
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367 | #ifdef MOVER_DEBUG |
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368 | std::cout << "Found the vseg of the mapping info" << std::endl; |
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369 | #endif |
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370 | /**creating a new section */ |
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371 | sect = new elfpp::section(*m_generator, elfpp::SHT_PROGBITS); |
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372 | |
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373 | sect->set_name(std::string(cur_vobj->name)); |
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374 | sect->set_flags(elfpp::SHF_ALLOC | elfpp::SHF_WRITE); |
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375 | sect->set_size(this->m_size); |
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376 | sect->set_content(this->m_data); |
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377 | |
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378 | elf_size = this->m_size; |
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379 | assert((elf_size >0) and "MAPPING INFO file is empty !?"); |
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380 | } |
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381 | else |
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382 | { |
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383 | #ifdef MOVER_DEBUG |
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384 | std::cout << "Found an ELF vseg" << std::endl; |
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385 | #endif |
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386 | if(m_loaders.count(filePath) == 0 ) |
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387 | m_loaders[filePath] = new elfpp::object(filePath); |
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388 | elfpp::object* loader = m_loaders[filePath];//TODO:free!? |
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389 | |
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390 | //sect = get_sect_by_name(loader, std::string(cur_vobj->name)); |
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391 | //assert(( sect->get_vaddr() == cur_vaddr) and "Vaddr doesn't match!"); |
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392 | sect = get_sect_by_addr(loader, cur_vaddr); |
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393 | assert(sect and "No section found"); |
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394 | |
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395 | sect->set_name(std::string(cur_vobj->name)); |
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396 | |
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397 | elf_size = sect->get_size(); |
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398 | assert((elf_size >0) and "ELF section empty ?"); |
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399 | |
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400 | if(!m_ginit) |
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401 | { |
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402 | /** Initailising the header of the generator from the first binary |
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403 | * we suppose the header is the same for all the binarys |
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404 | * */ |
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405 | m_generator->copy_info(*loader); |
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406 | m_ginit=true; |
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407 | } |
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408 | } |
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409 | |
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410 | if(elf_size > cur_vobj->length) |
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411 | std::cout << "Warning, specified elf type vobj ("<< |
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412 | cur_vobj->name <<") size is "<< cur_vobj->length << ", the actual size is " |
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413 | << elf_size << std::endl; |
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414 | |
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415 | cur_vobj->length = elf_size;//set the true size of this ELF vobj |
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416 | |
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417 | vSO->m_file = filePath; |
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418 | vSO->m_loadable = true; |
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419 | } |
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420 | first = false; |
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421 | |
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422 | //aligning the vobj->paddr if necessary |
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423 | if(cur_vobj->align) |
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424 | { |
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425 | cur_paddr = PSeg::align(cur_paddr, cur_vobj->align); |
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426 | aligned = true; |
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427 | } |
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428 | |
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429 | cur_vaddr += cur_vobj->length; |
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430 | cur_paddr += cur_vobj->length; |
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431 | simple_size += cur_vobj->length; |
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432 | } |
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433 | |
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434 | assert((cur_vaddr >= vseg->vbase )); |
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435 | assert((cur_paddr >= ps->nextLma() )); |
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436 | |
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437 | vSO->m_length = (cur_paddr - ps->nextLma()); //pageAlign is done by the psegs |
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438 | |
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439 | #ifdef MOVER_DEBUG |
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440 | if(aligned) |
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441 | { |
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442 | std::cout << "vseg base "<< std::hex << ps->nextLma() |
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443 | <<(ps->nextLma()+simple_size) <<" size " << std::dec << simple_size << |
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444 | std::endl; |
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445 | |
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446 | std::cout << "vseg aligned to: base: " << std::hex << ps->nextLma() |
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447 | <<" to "<< std::hex << ps->nextLma()+vSO->m_length<< " size " << std::dec << |
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448 | vSO->m_length << std::endl; |
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449 | } |
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450 | #endif |
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451 | |
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452 | vSO->m_ident = vseg->ident; |
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453 | |
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454 | //set the lma |
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455 | if ( vseg->ident != 0 ) // identity mapping required |
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456 | ps->addIdent( *vSO ); |
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457 | else |
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458 | ps->add( *vSO ); |
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459 | |
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460 | if(!sect) |
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461 | return; |
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462 | |
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463 | //std::cout << "section: "<< *sect <<"\n seted to: " << (*vSO) << std::endl; |
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464 | sect->set_vaddr((*vSO).lma()); |
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465 | m_generator->add_section(*(new elfpp::section(*sect))); |
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466 | |
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467 | } // end vseg_map() |
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468 | |
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469 | |
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470 | ///////////////////////////////////////////////////////////////////// |
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471 | void Mover::buildMap(void* desc) |
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472 | { |
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473 | mapping_header_t* header = (mapping_header_t*)desc; |
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474 | |
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475 | mapping_vspace_t* vspace = get_vspace_base( header ); |
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476 | mapping_pseg_t* pseg = get_pseg_base( header ); |
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477 | mapping_vseg_t* vseg = get_vseg_base( header ); |
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478 | |
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479 | // get the psegs |
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480 | #ifdef MOVER_DEBUG |
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481 | std::cout << "\n******* Storing Pseg information *********\n" << std::endl; |
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482 | #endif |
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483 | for ( size_t pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ ) |
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484 | { |
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485 | pseg_map( &pseg[pseg_id]); |
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486 | } |
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487 | |
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488 | // map global vsegs |
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489 | #ifdef MOVER_DEBUG |
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490 | std::cout << "\n******* mapping global vsegs *********\n" << std::endl; |
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491 | #endif |
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492 | for ( size_t vseg_id = 0 ; vseg_id < header->globals ; vseg_id++ ) |
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493 | { |
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494 | vseg_map( &vseg[vseg_id]); |
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495 | } |
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496 | |
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497 | // second loop on virtual spaces to map private vsegs |
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498 | for (size_t vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ ) |
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499 | { |
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500 | |
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501 | #ifdef MOVER_DEBUG |
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502 | std::cout << "\n******* mapping all vsegs of " << vspace[vspace_id].name << " *********\n" << std::endl; |
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503 | #endif |
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504 | |
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505 | for ( size_t vseg_id = vspace[vspace_id].vseg_offset ; |
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506 | vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs) ; |
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507 | vseg_id++ ) |
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508 | { |
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509 | vseg_map( &vseg[vseg_id]); |
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510 | } |
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511 | } |
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512 | |
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513 | } // end buildMap() |
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514 | |
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515 | |
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516 | |
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517 | // Local Variables: |
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518 | // tab-width: 4 |
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519 | // c-basic-offset: 4 |
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520 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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521 | // indent-tabs-mode: nil |
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522 | // End: |
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523 | |
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524 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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525 | |
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