1 | /*! @file ExecutableInfo.cc |
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2 | * @brief ExecutableInfo Implementation |
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3 | * |
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4 | * This file contains the implementation of the functionality |
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5 | * of the ExecutableInfo class. |
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6 | */ |
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7 | |
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8 | #include <stdio.h> |
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9 | |
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10 | #include <rld.h> |
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11 | |
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12 | #include "ExecutableInfo.h" |
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13 | #include "app_common.h" |
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14 | #include "CoverageMap.h" |
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15 | #include "DesiredSymbols.h" |
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16 | #include "SymbolTable.h" |
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17 | |
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18 | namespace Coverage { |
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19 | |
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20 | ExecutableInfo::ExecutableInfo( |
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21 | const char* const theExecutableName, |
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22 | const char* const theLibraryName, |
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23 | bool verbose |
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24 | ) : executable(theExecutableName), |
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25 | loadAddress(0) |
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26 | { |
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27 | if (theLibraryName != nullptr) |
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28 | libraryName = theLibraryName; |
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29 | |
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30 | if (verbose) { |
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31 | std::cerr << "Loading executable " << theExecutableName; |
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32 | if (theLibraryName != nullptr) |
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33 | std::cerr << " (" << theLibraryName << ')'; |
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34 | std::cerr << std::endl; |
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35 | } |
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36 | |
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37 | executable.open(); |
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38 | executable.begin(); |
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39 | executable.load_symbols(symbols); |
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40 | |
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41 | debug.begin(executable.elf()); |
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42 | debug.load_debug(); |
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43 | debug.load_functions(); |
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44 | |
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45 | try { |
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46 | for (auto& cu : debug.get_cus()) { |
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47 | for (auto& func : cu.get_functions()) { |
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48 | if (!func.has_machine_code()) { |
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49 | continue; |
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50 | } |
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51 | |
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52 | if (!SymbolsToAnalyze->isDesired(func.name())) { |
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53 | continue; |
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54 | } |
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55 | |
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56 | if (func.is_inlined()) { |
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57 | if (func.is_external()) { |
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58 | // Flag it |
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59 | std::cerr << "Function is both external and inlined: " |
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60 | << func.name() << std::endl; |
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61 | } |
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62 | |
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63 | if (func.has_entry_pc()) { |
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64 | continue; |
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65 | } |
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66 | |
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67 | // If the low PC address is zero, the symbol does not appear in |
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68 | // this executable. |
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69 | if (func.pc_low() == 0) { |
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70 | continue; |
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71 | } |
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72 | } |
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73 | |
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74 | // We can't process a zero size function. |
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75 | if (func.pc_high() == 0) { |
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76 | continue; |
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77 | } |
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78 | |
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79 | createCoverageMap (cu.name(), func.name(), |
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80 | func.pc_low(), func.pc_high() - 1); |
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81 | } |
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82 | } |
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83 | } catch (...) { |
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84 | debug.end(); |
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85 | executable.end(); |
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86 | executable.close(); |
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87 | throw; |
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88 | } |
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89 | |
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90 | // Can't cleanup handles until the destructor because the information is |
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91 | // referenced elsewhere. NOTE: This could cause problems from too many open |
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92 | // file descriptors. |
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93 | } |
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94 | |
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95 | ExecutableInfo::~ExecutableInfo() |
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96 | { |
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97 | debug.end(); |
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98 | executable.end(); |
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99 | executable.close(); |
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100 | } |
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101 | |
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102 | void ExecutableInfo::dumpCoverageMaps( void ) { |
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103 | ExecutableInfo::CoverageMaps::iterator itr; |
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104 | |
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105 | for (auto& cm : coverageMaps) { |
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106 | std::cerr << "Coverage Map for " << cm.first << std::endl; |
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107 | cm.second->dump(); |
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108 | } |
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109 | } |
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110 | |
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111 | void ExecutableInfo::dumpExecutableInfo( void ){ |
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112 | std::cout << std::endl |
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113 | << "== Executable info ==" << std::endl |
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114 | << "executable = " << getFileName () << std::endl |
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115 | << "library = " << libraryName << std::endl |
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116 | << "loadAddress = " << loadAddress << std::endl; |
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117 | theSymbolTable.dumpSymbolTable(); |
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118 | } |
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119 | |
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120 | CoverageMapBase* ExecutableInfo::getCoverageMap ( uint32_t address ) |
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121 | { |
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122 | CoverageMapBase* aCoverageMap = NULL; |
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123 | CoverageMaps::iterator it; |
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124 | std::string itsSymbol; |
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125 | |
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126 | // Obtain the coverage map containing the specified address. |
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127 | itsSymbol = theSymbolTable.getSymbol( address ); |
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128 | if (itsSymbol != "") { |
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129 | aCoverageMap = &findCoverageMap(itsSymbol); |
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130 | } |
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131 | |
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132 | return aCoverageMap; |
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133 | } |
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134 | |
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135 | const std::string ExecutableInfo::getFileName ( void ) const |
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136 | { |
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137 | return executable.name().full(); |
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138 | } |
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139 | |
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140 | const std::string ExecutableInfo::getLibraryName( void ) const |
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141 | { |
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142 | return libraryName; |
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143 | } |
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144 | |
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145 | uint32_t ExecutableInfo::getLoadAddress( void ) const |
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146 | { |
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147 | return loadAddress; |
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148 | } |
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149 | |
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150 | SymbolTable* ExecutableInfo::getSymbolTable ( void ) |
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151 | { |
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152 | return &theSymbolTable; |
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153 | } |
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154 | |
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155 | CoverageMapBase& ExecutableInfo::findCoverageMap( |
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156 | const std::string& symbolName |
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157 | ) |
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158 | { |
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159 | CoverageMaps::iterator cmi = coverageMaps.find( symbolName ); |
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160 | if ( cmi == coverageMaps.end() ) |
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161 | throw CoverageMapNotFoundError(symbolName); |
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162 | return *(cmi->second); |
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163 | } |
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164 | |
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165 | void ExecutableInfo::createCoverageMap ( |
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166 | const std::string& fileName, |
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167 | const std::string& symbolName, |
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168 | uint32_t lowAddress, |
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169 | uint32_t highAddress |
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170 | ) |
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171 | { |
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172 | CoverageMapBase *theMap; |
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173 | CoverageMaps::iterator itr; |
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174 | |
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175 | if ( lowAddress > highAddress ) { |
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176 | std::ostringstream what; |
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177 | what << "Low address is greater than high address for symbol " |
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178 | << symbolName |
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179 | << " (" << lowAddress |
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180 | << " and " << highAddress |
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181 | << ")"; |
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182 | throw rld::error( what, "ExecutableInfo::createCoverageMap" ); |
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183 | } |
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184 | |
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185 | itr = coverageMaps.find( symbolName ); |
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186 | if ( itr == coverageMaps.end() ) { |
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187 | theMap = new CoverageMap( fileName, lowAddress, highAddress ); |
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188 | coverageMaps[ symbolName ] = theMap; |
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189 | } else { |
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190 | theMap = itr->second; |
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191 | theMap->Add( lowAddress, highAddress ); |
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192 | } |
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193 | } |
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194 | |
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195 | void ExecutableInfo::getSourceAndLine( |
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196 | const unsigned int address, |
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197 | std::string& line |
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198 | ) |
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199 | { |
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200 | std::string file; |
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201 | int lno; |
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202 | debug.get_source (address, file, lno); |
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203 | std::ostringstream ss; |
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204 | ss << file << ':' << lno; |
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205 | line = ss.str (); |
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206 | } |
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207 | |
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208 | bool ExecutableInfo::hasDynamicLibrary( void ) |
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209 | { |
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210 | return !libraryName.empty(); |
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211 | } |
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212 | |
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213 | void ExecutableInfo::mergeCoverage( void ) { |
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214 | for (auto& cm : coverageMaps) { |
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215 | if (SymbolsToAnalyze->isDesired( cm.first )) |
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216 | SymbolsToAnalyze->mergeCoverageMap( cm.first, cm.second ); |
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217 | } |
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218 | } |
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219 | |
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220 | void ExecutableInfo::setLoadAddress( uint32_t address ) |
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221 | { |
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222 | loadAddress = address; |
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223 | } |
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224 | |
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225 | } |
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