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 "memo.h" |
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40 | |
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41 | //#define MOVER_DEBUG |
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42 | |
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43 | MeMo::MeMo( const std::string &filename, |
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44 | const size_t pageSize) |
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45 | :m_path(filename), |
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46 | m_pathHandler(filename), |
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47 | m_ginit(false), |
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48 | m_generator(new elfpp::object()) |
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49 | { |
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50 | |
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51 | PSeg::setPageSize(pageSize); |
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52 | |
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53 | load_bin(m_path); |
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54 | |
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55 | #ifdef MOVER_DEBUG |
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56 | std::cout << "Binary file path: " << m_path << std::endl; |
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57 | print_mapping_info(m_data); |
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58 | #endif |
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59 | |
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60 | buildMap(m_data); |
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61 | |
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62 | #ifdef MOVER_DEBUG |
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63 | std::cout << "parsing done" << std::endl ; |
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64 | #endif |
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65 | |
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66 | #ifdef MOVER_DEBUG |
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67 | print_mapping(); |
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68 | std::cout << *this << std::endl; |
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69 | #endif |
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70 | |
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71 | m_psegh.check(); |
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72 | #ifdef MOVER_DEBUG |
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73 | std::cout << "checking done" << std::endl ; |
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74 | #endif |
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75 | |
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76 | } |
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77 | |
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78 | void MeMo::print( std::ostream &o ) const |
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79 | { |
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80 | std::cout << "All sections:" << std::endl; |
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81 | FOREACH( sect, m_generator->get_section_table() ) |
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82 | { |
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83 | assert(&*sect != NULL); |
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84 | std::cout << *sect << std::endl; |
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85 | } |
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86 | } |
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87 | |
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88 | void MeMo::print_mapping() const |
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89 | { |
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90 | std::cout << m_psegh << std::endl; |
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91 | } |
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92 | |
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93 | elfpp::section* MeMo::get_sect_by_addr(elfpp::object *loader, unsigned int addr) |
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94 | { |
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95 | FOREACH( sect, loader->get_section_table() ) |
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96 | { |
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97 | assert(&*sect != NULL); |
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98 | elfpp::sh_flags_e eflags = sect->get_flags(); |
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99 | if ( !(eflags & elfpp::SHF_ALLOC) ) |
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100 | continue; |
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101 | if(sect->get_load_address() == addr) //load_addr ? |
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102 | { |
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103 | return (&*sect); |
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104 | } |
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105 | } |
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106 | return NULL; |
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107 | } |
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108 | |
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109 | //TODO:delete |
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110 | elfpp::section* MeMo::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 MeMo::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 | ////////////////////////////////////////// |
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143 | void* MeMo::load_bin(std::string filename) |
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144 | { |
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145 | |
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146 | #ifdef MOVER_DEBUG |
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147 | std::cout << "Trying to load the binary blob from file '" << m_path << "'" << std::endl; |
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148 | #endif |
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149 | |
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150 | std::ifstream input(m_path.c_str(), std::ios_base::binary|std::ios_base::in); |
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151 | |
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152 | if ( ! input.good() ) |
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153 | throw soclib::exception::RunTimeError(std::string("Can't open the file: ") + m_path); |
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154 | |
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155 | input.seekg( 0, std::ifstream::end ); |
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156 | m_size = input.tellg(); |
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157 | input.seekg( 0, std::ifstream::beg ); |
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158 | |
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159 | //m_data = new void*[m_size]; |
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160 | m_data = std::malloc(m_size); |
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161 | if ( !m_data ) |
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162 | throw soclib::exception::RunTimeError("malloc failed... No memory space"); |
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163 | |
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164 | input.read( (char*)m_data, m_size ); |
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165 | |
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166 | return m_data; |
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167 | } |
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168 | |
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169 | ///////////// |
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170 | MeMo::~MeMo() |
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171 | { |
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172 | //std::cout << "Deleted MeMo " << *this << std::endl; |
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173 | std::free(m_data); |
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174 | std::map<std::string, elfpp::object*>::iterator l; |
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175 | for(l = m_loaders.begin(); l != m_loaders.end(); l++) |
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176 | { |
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177 | delete (*l).second; |
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178 | } |
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179 | //delete m_generator; |
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180 | } |
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181 | |
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182 | |
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183 | ///////////////////////////////////////////////////////////////////////////// |
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184 | // various mapping_info data structure access functions |
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185 | ///////////////////////////////////////////////////////////////////////////// |
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186 | |
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187 | ///////////////////////////////////////////////////////////////////////////// |
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188 | mapping_pseg_t* MeMo::get_pseg_base( mapping_header_t* header ) |
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189 | { |
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190 | return (mapping_pseg_t*) ((char*)header + |
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191 | MAPPING_HEADER_SIZE + |
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192 | MAPPING_CLUSTER_SIZE*header->clusters); |
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193 | } |
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194 | ///////////////////////////////////////////////////////////////////////////// |
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195 | mapping_vspace_t* MeMo::get_vspace_base( mapping_header_t* header ) |
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196 | { |
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197 | return (mapping_vspace_t*) ((char*)header + |
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198 | MAPPING_HEADER_SIZE + |
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199 | MAPPING_CLUSTER_SIZE*header->clusters + |
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200 | MAPPING_PSEG_SIZE*header->psegs); |
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201 | } |
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202 | ///////////////////////////////////////////////////////////////////////////// |
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203 | mapping_vseg_t* MeMo::get_vseg_base( mapping_header_t* header ) |
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204 | { |
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205 | return (mapping_vseg_t*) ((char*)header + |
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206 | MAPPING_HEADER_SIZE + |
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207 | MAPPING_CLUSTER_SIZE*header->clusters + |
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208 | MAPPING_PSEG_SIZE*header->psegs + |
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209 | MAPPING_VSPACE_SIZE*header->vspaces); |
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210 | } |
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211 | ///////////////////////////////////////////////////////////////////////////// |
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212 | mapping_vobj_t* MeMo::get_vobj_base( mapping_header_t* header ) |
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213 | { |
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214 | return (mapping_vobj_t*) ((char*)header + |
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215 | MAPPING_HEADER_SIZE + |
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216 | MAPPING_CLUSTER_SIZE*header->clusters + |
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217 | MAPPING_PSEG_SIZE*header->psegs + |
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218 | MAPPING_VSPACE_SIZE*header->vspaces + |
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219 | MAPPING_VSEG_SIZE*header->vsegs); |
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220 | } |
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221 | |
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222 | ///////////////////////////////////////////////////////////////////////////// |
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223 | // print the content of the mapping_info data structure |
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224 | //////////////////////////////////////////////////////////////////////// |
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225 | void MeMo::print_mapping_info(void* desc) |
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226 | { |
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227 | mapping_header_t* header = (mapping_header_t*)desc; |
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228 | |
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229 | mapping_pseg_t* pseg = get_pseg_base( header );; |
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230 | mapping_vspace_t* vspace = get_vspace_base ( header );; |
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231 | mapping_vseg_t* vseg = get_vseg_base ( header ); |
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232 | mapping_vobj_t* vobj = get_vobj_base ( header ); |
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233 | |
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234 | // header |
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235 | std::cout << std::hex << "mapping_info" << std::dec << std::endl |
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236 | << " + signature = " << header->signature << std::endl |
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237 | << " + name = " << header->name << std::endl |
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238 | << " + clusters = " << header->clusters << std::endl |
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239 | << " + psegs = " << header->psegs << std::endl |
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240 | << " + ttys = " << header->ttys << std::endl |
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241 | << " + fbs = " << header->fbs << std::endl |
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242 | << " + vspaces = " << header->vspaces << std::endl |
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243 | << " + globals = " << header->globals << std::endl |
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244 | << " + vsegs = " << header->vsegs << std::endl |
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245 | << " + vobjs = " << header->vsegs << std::endl |
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246 | << " + tasks = " << header->tasks << std::endl; |
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247 | |
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248 | // psegs |
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249 | for ( size_t pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ ) |
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250 | { |
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251 | std::cout << "pseg " << pseg[pseg_id].name << std::hex << std::endl |
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252 | << " + base = " << pseg[pseg_id].base << std::endl |
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253 | << " + length = " << pseg[pseg_id].length << std::endl ; |
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254 | } |
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255 | |
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256 | // globals |
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257 | for ( size_t vseg_id = 0 ; vseg_id < header->globals ; vseg_id++ ) |
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258 | { |
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259 | std::cout << std::endl; |
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260 | std::cout << "global vseg " << vseg[vseg_id].name << std::hex << std::endl |
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261 | << " + vbase = " << vseg[vseg_id].vbase << std::endl |
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262 | << " + length = " << vseg[vseg_id].length << std::endl |
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263 | << " + mode = " << (size_t)vseg[vseg_id].mode << std::endl |
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264 | << " + ident = " << (bool)vseg[vseg_id].ident << std::endl |
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265 | << " + psegname = " << pseg[vseg[vseg_id].psegid].name << std::endl; |
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266 | for( size_t vobj_id = vseg[vseg_id].vobj_offset ; |
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267 | vobj_id < vseg[vseg_id].vobj_offset + vseg[vseg_id].vobjs ; |
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268 | vobj_id++ ) |
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269 | { |
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270 | std::cout << "\t vobj " << vobj[vobj_id].name << std::endl |
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271 | << "\t + index = " << std::dec << vobj_id << std::endl |
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272 | << "\t + type = " << vobj[vobj_id].type << std::endl |
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273 | << "\t + length = " << vobj[vobj_id].length << std::endl |
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274 | << "\t + align = " << vobj[vobj_id].align << std::endl |
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275 | << "\t + binpath = " << vobj[vobj_id].binpath << std::endl |
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276 | << "\t + init = " << vobj[vobj_id].init << std::endl; |
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277 | } |
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278 | } |
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279 | |
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280 | // vspaces |
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281 | for ( size_t vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ ) |
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282 | { |
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283 | std::cout << "***vspace " << vspace[vspace_id].name << std::endl |
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284 | << " + vsegs = " << vspace[vspace_id].vsegs << std::endl |
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285 | << " + vobjs = " << vspace[vspace_id].vobjs << std::endl |
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286 | << " + tasks = " << vspace[vspace_id].tasks << std::endl; |
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287 | |
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288 | for ( size_t vseg_id = vspace[vspace_id].vseg_offset ; |
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289 | vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs) ; |
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290 | vseg_id++ ) |
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291 | { |
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292 | std::cout << "\t vseg " << vseg[vseg_id].name << std::endl |
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293 | << "\t + vbase = " << vseg[vseg_id].vbase << std::endl |
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294 | << "\t + length = " << vseg[vseg_id].length << std::endl |
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295 | << "\t + mode = " << (size_t)vseg[vseg_id].mode << std::endl |
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296 | << "\t + ident = " << (bool)vseg[vseg_id].ident << std::endl |
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297 | << "\t + psegname = " << pseg[vseg[vseg_id].psegid].name << std::endl; |
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298 | for(size_t vobj_id = vseg[vseg_id].vobj_offset ; |
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299 | vobj_id < vseg[vseg_id].vobj_offset + vseg[vseg_id].vobjs ; |
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300 | vobj_id++ ) |
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301 | { |
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302 | std::cout << "\t\t vobj " << vobj[vobj_id].name << std::endl |
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303 | << "\t\t + index = " << std::dec << vobj_id << std::endl |
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304 | << "\t\t + type = " << vobj[vobj_id].type << std::endl |
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305 | << "\t\t + length = " << vobj[vobj_id].length << std::endl |
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306 | << "\t\t + align = " << vobj[vobj_id].align << std::endl |
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307 | << "\t\t + binpath = " << vobj[vobj_id].binpath << std::endl |
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308 | << "\t\t + init = " << vobj[vobj_id].init << std::endl; |
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309 | } |
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310 | } |
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311 | |
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312 | } |
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313 | } // end print_mapping_info() |
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314 | |
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315 | ////////////////////////////////////////// |
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316 | void MeMo::pseg_map( mapping_pseg_t* pseg) |
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317 | { |
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318 | std::string name(pseg->name); |
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319 | m_psegh.m_pSegs.push_back(PSeg(name, pseg->base, pseg->length)); |
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320 | } |
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321 | |
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322 | |
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323 | ////////////////////////////////////////// |
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324 | void MeMo::vseg_map( mapping_vseg_t* vseg) |
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325 | { |
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326 | mapping_vobj_t* vobj = get_vobj_base( (mapping_header_t*) m_data ); |
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327 | PSeg *ps = &(m_psegh.get(vseg->psegid));// get physical segment pointer(PSegHandler::get) |
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328 | elfpp::section* sect = NULL; |
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329 | size_t cur_vaddr; |
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330 | size_t cur_paddr; |
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331 | bool first = true; |
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332 | bool aligned = false; |
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333 | |
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334 | VSeg *vSO = new VSeg; |
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335 | |
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336 | vSO->m_name = std::string(vseg->name); |
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337 | vSO->m_vma = vseg->vbase; |
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338 | vSO->m_lma = ps->nextLma(); |
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339 | |
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340 | cur_vaddr = vseg->vbase; |
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341 | cur_paddr = ps->nextLma(); |
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342 | |
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343 | mapping_vobj_t* cur_vobj; |
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344 | size_t simple_size = 0; //for debug |
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345 | |
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346 | #ifdef MOVER_DEBUG |
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347 | std::cout << "--------------------vseg_map "<< vseg->name <<"---------------------" << std::endl; |
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348 | #endif |
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349 | |
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350 | for ( size_t vobj_id = vseg->vobj_offset ; vobj_id < (vseg->vobj_offset + vseg->vobjs) ; vobj_id++ ) |
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351 | { |
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352 | cur_vobj = &vobj[vobj_id]; |
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353 | |
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354 | #ifdef MOVER_DEBUG |
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355 | std::cout << "current vobj("<< vobj_id <<"): " << cur_vobj->name << " (" <<cur_vobj->vaddr << ")" |
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356 | << " size: "<< cur_vobj->length << " type: " << cur_vobj->type << std::endl; |
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357 | #endif |
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358 | |
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359 | if(cur_vobj->type == VOBJ_TYPE_ELF) |
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360 | { |
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361 | if(!first) |
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362 | throw soclib::exception::RunTimeError(std::string("elf vobj type, must be placed first in a vseg")); |
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363 | |
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364 | size_t elf_size; |
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365 | std::string filePath(m_pathHandler.getFullPath(std::string(cur_vobj->binpath))); |
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366 | #ifdef MOVER_DEBUG |
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367 | std::cout << "Handling: " << filePath << " ..." << std::endl; |
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368 | #endif |
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369 | if(!filePath.compare(m_path)) //local blob: map_info |
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370 | { |
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371 | #ifdef MOVER_DEBUG |
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372 | std::cout << "Found the vseg of the mapping info" << std::endl; |
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373 | #endif |
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374 | /**creating a new section */ |
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375 | sect = new elfpp::section(*m_generator, elfpp::SHT_PROGBITS); |
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376 | |
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377 | sect->set_name(std::string(cur_vobj->name)); |
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378 | sect->set_flags(elfpp::SHF_ALLOC | elfpp::SHF_WRITE); |
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379 | sect->set_size(this->m_size); |
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380 | sect->set_content(this->m_data); |
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381 | |
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382 | elf_size = this->m_size; |
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383 | assert((elf_size >0) and "MAPPING INFO file is empty !?"); |
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384 | } |
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385 | else |
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386 | { |
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387 | #ifdef MOVER_DEBUG |
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388 | std::cout << "Found an ELF vseg" << std::endl; |
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389 | #endif |
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390 | if(m_loaders.count(filePath) == 0 ) |
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391 | m_loaders[filePath] = new elfpp::object(filePath); |
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392 | elfpp::object* loader = m_loaders[filePath];//TODO:free!? |
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393 | |
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394 | //TODO: delete |
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395 | //sect = get_sect_by_name(loader, std::string(cur_vobj->name)); |
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396 | //assert(( sect->get_vaddr() == cur_vaddr) and "Vaddr doesn't match!"); |
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397 | |
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398 | sect = get_sect_by_addr(loader, cur_vaddr); |
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399 | assert(sect and "No section found"); |
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400 | |
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401 | sect->set_name(std::string(cur_vobj->name)); |
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402 | |
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403 | |
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404 | elf_size = sect->get_size(); |
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405 | assert((elf_size >0) and "ELF section empty ?"); |
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406 | |
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407 | if(!m_ginit) |
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408 | { |
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409 | /** Initailising the header of the generator from the first binary, |
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410 | * we suppose that the header is the same for all the binarys |
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411 | * */ |
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412 | m_generator->copy_info(*loader); |
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413 | m_ginit=true; |
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414 | } |
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415 | } |
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416 | |
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417 | if(elf_size > cur_vobj->length) |
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418 | std::cout << "Warning, specified elf type vobj ("<< |
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419 | cur_vobj->name <<") size is "<< cur_vobj->length << ", the actual size is " |
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420 | << elf_size << std::endl; |
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421 | |
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422 | cur_vobj->length = elf_size;//set the true size of this ELF vobj |
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423 | |
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424 | vSO->m_file = filePath; |
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425 | vSO->m_loadable = true; |
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426 | } |
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427 | first = false; |
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428 | |
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429 | //aligning the vobj->paddr if necessary |
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430 | if(cur_vobj->align) |
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431 | { |
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432 | cur_paddr = PSeg::align(cur_paddr, cur_vobj->align); |
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433 | aligned = true; |
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434 | } |
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435 | |
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436 | cur_vaddr += cur_vobj->length; |
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437 | cur_paddr += cur_vobj->length; |
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438 | simple_size += cur_vobj->length; |
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439 | } |
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440 | |
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441 | assert((cur_vaddr >= vseg->vbase )); |
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442 | assert((cur_paddr >= ps->nextLma() )); |
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443 | |
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444 | vSO->m_length = (cur_paddr - ps->nextLma()); //pageAlign is done by the psegs |
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445 | |
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446 | #ifdef MOVER_DEBUG |
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447 | if(aligned) |
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448 | { |
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449 | std::cout << "vseg base "<< std::hex << ps->nextLma() |
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450 | <<(ps->nextLma()+simple_size) <<" size " << std::dec << simple_size << |
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451 | std::endl; |
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452 | |
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453 | std::cout << "vseg aligned to: base: " << std::hex << ps->nextLma() |
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454 | <<" to "<< std::hex << ps->nextLma()+vSO->m_length<< " size " << std::dec << |
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455 | vSO->m_length << std::endl; |
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456 | } |
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457 | #endif |
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458 | |
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459 | vSO->m_ident = vseg->ident; |
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460 | |
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461 | //set the lma |
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462 | if ( vseg->ident != 0 ) // identity mapping required |
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463 | ps->addIdent( *vSO ); |
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464 | else |
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465 | ps->add( *vSO ); |
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466 | |
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467 | if(!sect) |
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468 | return; |
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469 | |
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470 | #ifdef MOVER_DEBUG |
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471 | std::cout << "section: "<< *sect <<"\n seted to: " << (*vSO) << std::endl; |
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472 | #endif |
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473 | |
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474 | sect->set_vaddr((*vSO).lma()); |
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475 | m_generator->add_section(*(new elfpp::section(*sect))); |
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476 | |
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477 | } // end vseg_map() |
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478 | |
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479 | |
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480 | /////////////////////////////// |
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481 | void MeMo::buildMap(void* desc) |
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482 | { |
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483 | mapping_header_t* header = (mapping_header_t*)desc; |
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484 | |
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485 | mapping_vspace_t* vspace = get_vspace_base( header ); |
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486 | mapping_pseg_t* pseg = get_pseg_base( header ); |
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487 | mapping_vseg_t* vseg = get_vseg_base( header ); |
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488 | |
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489 | // get the psegs |
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490 | |
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491 | #ifdef MOVER_DEBUG |
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492 | std::cout << "\n******* Storing Pseg information *********\n" << std::endl; |
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493 | #endif |
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494 | |
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495 | for ( size_t pseg_id = 0 ; pseg_id < header->psegs ; pseg_id++ ) |
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496 | { |
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497 | pseg_map( &pseg[pseg_id]); |
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498 | } |
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499 | |
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500 | // map global vsegs |
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501 | |
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502 | #ifdef MOVER_DEBUG |
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503 | std::cout << "\n******* mapping global vsegs *********\n" << std::endl; |
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504 | #endif |
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505 | |
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506 | for ( size_t vseg_id = 0 ; vseg_id < header->globals ; vseg_id++ ) |
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507 | { |
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508 | vseg_map( &vseg[vseg_id]); |
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509 | } |
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510 | |
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511 | // loop on virtual spaces to map private vsegs |
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512 | for (size_t vspace_id = 0 ; vspace_id < header->vspaces ; vspace_id++ ) |
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513 | { |
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514 | |
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515 | #ifdef MOVER_DEBUG |
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516 | std::cout << "\n******* mapping all vsegs of " << vspace[vspace_id].name << " *********\n" << std::endl; |
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517 | #endif |
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518 | |
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519 | for ( size_t vseg_id = vspace[vspace_id].vseg_offset ; |
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520 | vseg_id < (vspace[vspace_id].vseg_offset + vspace[vspace_id].vsegs) ; |
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521 | vseg_id++ ) |
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522 | { |
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523 | vseg_map( &vseg[vseg_id]); |
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524 | } |
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525 | } |
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526 | |
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527 | } // end buildMap() |
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528 | |
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529 | |
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530 | |
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531 | // Local Variables: |
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532 | // tab-width: 4 |
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533 | // c-basic-offset: 4 |
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534 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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535 | // indent-tabs-mode: nil |
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536 | // End: |
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537 | |
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538 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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539 | |
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