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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Implementation of the Class ElfConsumer for the elf2e32 tool |
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15 // @internalComponent |
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16 // @released |
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17 // |
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18 // |
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19 |
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20 #include "pl_elfconsumer.h" |
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21 #include "parameterlistinterface.h" |
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22 #include "errorhandler.h" |
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23 #include <iostream> |
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24 #include <string> |
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25 |
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26 using std::list; |
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27 using std::cout; |
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28 using std::endl; |
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29 using std::min; |
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30 |
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31 /** |
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32 Constructor for class ElfConsumer |
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33 @param aParameterListInterface - instance of class ParameterListInterface |
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34 @internalComponent |
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35 @released |
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36 */ |
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37 ElfConsumer::ElfConsumer(ParameterListInterface *aParameterListInterface) :\ |
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38 ElfExecutable(aParameterListInterface) ,\ |
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39 iMemBlock(NULL) |
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40 { |
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41 } |
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42 |
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43 |
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44 /** |
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45 Destructor for class ElfConsumer |
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46 @internalComponent |
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47 @released |
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48 */ |
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49 ElfConsumer::~ElfConsumer(){ |
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50 |
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51 DELETE_PTR_ARRAY(iMemBlock); |
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52 } |
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53 |
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54 |
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55 /** |
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56 This operation takes the member of the ElfFileWriter object that is to be populated with the |
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57 export info in the iExports member (from the iInputElfFile member of ElfConsumer). |
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58 @param aFile - Elf file name |
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59 @internalComponent |
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60 @released |
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61 */ |
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62 PLUINT32 ElfConsumer::ReadElfFile(char* aFile){ |
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63 FILE* aFd; |
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64 |
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65 if( (aFd = fopen(aFile,"rb")) == NULL) { |
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66 throw FileError(FILEOPENERROR, aFile); |
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67 } |
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68 |
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69 fseek(aFd, 0, SEEK_END); |
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70 |
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71 PLUINT32 aSz = ftell(aFd); |
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72 iMemBlock = new char[aSz]; |
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73 |
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74 fseek(aFd, 0, SEEK_SET); |
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75 |
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76 // Certain Windows devices (e.g., network shares) limit the size of I/O operations to 64MB |
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77 // or less. We read all the data in individual KMaxWindowsIOSize (32MB) chunks to be safe. |
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78 PLUINT32 chunkSize = 0; |
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79 for( PLUINT32 bytesRead = 0; bytesRead < aSz; bytesRead += chunkSize) { |
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80 |
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81 chunkSize = min(aSz - bytesRead, PLUINT32(KMaxWindowsIOSize)); |
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82 |
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83 if( fread(iMemBlock + bytesRead, chunkSize, 1, aFd) != 1) { |
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84 throw FileError(FILEREADERROR, aFile); |
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85 } |
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86 } |
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87 |
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88 return 0; |
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89 } |
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90 |
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91 |
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92 /** |
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93 Funtion for getting elf symbol list |
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94 @param aList - list of symbols found in elf files |
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95 @return - 0 for no exports in elf files, otherwise number of symbols found |
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96 @internalComponent |
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97 @released |
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98 */ |
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99 int ElfConsumer::GetElfSymbolList(list<Symbol*>& aList){ |
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100 |
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101 if( !iExports ) |
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102 return 0; |
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103 |
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104 //Get the exported symbols |
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105 vector<DllSymbol*> aTmpList = iExports->GetExports(true); |
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106 |
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107 typedef vector<DllSymbol*> List; |
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108 List::iterator aItr = aTmpList.begin(); |
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109 while( aItr != aTmpList.end() ){ |
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110 aList.push_back((Symbol*) (*aItr)); |
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111 aItr++; |
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112 } |
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113 aTmpList.clear(); |
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114 return aList.size(); |
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115 } |
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116 |
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117 /** |
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118 Funtion for getting image details |
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119 @internalComponent |
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120 @released |
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121 */ |
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122 void ElfConsumer::GetImageDetails(/*E32ImageInterface aInterface*/){ |
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123 |
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124 } |
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125 |
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126 |
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127 /** |
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128 Funtion for processing elf file |
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129 @internalComponent |
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130 @released |
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131 */ |
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132 PLUINT32 ElfConsumer::ProcessElfFile(){ |
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133 |
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134 Elf32_Ehdr *aElfHdr = ELF_ENTRY_PTR(Elf32_Ehdr, iMemBlock, 0); |
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135 |
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136 try |
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137 { |
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138 ElfExecutable::ProcessElfFile(aElfHdr); |
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139 |
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140 /* The following is a workaround for the ARM linker problem. |
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141 * Linker Problem: ARM linker generates Long ARM to Thumb veneers for which |
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142 * relocation entries are not generated. |
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143 * The linker problem is resolved in ARM Linker version RVCT 2.2 Build 616. |
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144 * Hence the workaround is applicable only for executables generated |
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145 * by ARM linker 2.2 and if build number is below 616. |
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146 */ |
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147 char * aARMCompiler = "ARM Linker, RVCT"; |
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148 int length = strlen(aARMCompiler); |
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149 char * aCommentSection = ElfExecutable::FindCommentSection(); |
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150 /* The .comment section in an elf file contains the compiler version information and |
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151 * it is used to apply the fore mentioned workaround. |
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152 * Some build tool chains generating elf file output without the .comment section, |
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153 * just to save the disk space. In this case the variable aCommentSection gets the NULL value. |
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154 * Solution: This workaround is only applicable for RVCT compiler. So if the .comment section |
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155 * is not available in the elf file, then this workaround is no need to be applied. |
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156 */ |
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157 if(aCommentSection != NULL) |
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158 { |
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159 if (!strncmp(aCommentSection, aARMCompiler, length)) |
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160 { |
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161 int WorkAroundBuildNo = 616; |
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162 int BuildNo = 0; |
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163 char* RVCTVersion = aCommentSection+length; |
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164 |
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165 /* RVCTVersion contains the following string |
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166 * "<MajorVersion>.<MinorVersion> [Build <BuildNumber>]" |
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167 * Example: "2.2 [Build 616]" |
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168 */ |
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169 String Version(RVCTVersion); |
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170 size_t pos = Version.find_last_of(' '); |
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171 size_t size = Version.size(); |
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172 if (pos < size) |
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173 { |
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174 size_t index = pos + 1; |
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175 if (index < size) |
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176 { |
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177 BuildNo = atoi(strtok(RVCTVersion+index, "]")); |
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178 } |
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179 } |
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180 |
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181 /* Workaround is applicable only when the version is 2.2 and if the |
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182 * build number is below 616. |
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183 */ |
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184 size_t minorVersionPos = Version.find_first_of('.'); |
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185 char RVCTMinorVersion='0'; |
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186 if (minorVersionPos < size) |
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187 { |
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188 size_t index = minorVersionPos + 1; |
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189 if (index < size) |
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190 { |
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191 RVCTMinorVersion = *(RVCTVersion + index); |
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192 } |
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193 } |
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194 |
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195 if ((*RVCTVersion == '2') && (RVCTMinorVersion == '2') && |
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196 (BuildNo < WorkAroundBuildNo)) |
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197 { |
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198 /* The static symbol table should be processed to identify the veneer symbols. |
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199 * Relocation entries should be generated for these symbols if the linker |
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200 * is not generating the same. |
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201 */ |
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202 ElfExecutable::FindStaticSymbolTable(); |
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203 ElfExecutable::ProcessVeneers(); |
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204 } |
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205 } |
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206 } |
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207 } |
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208 catch(ErrorHandler&) |
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209 { |
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210 throw; |
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211 } |
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212 /*catch(...) // If there are any other unhandled exception,they are handled here. |
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213 { |
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214 //Warning to indicate that there had been an exception at this point. |
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215 MessageHandler::GetInstance()->ReportWarning(ELFFILEERROR,(char*)iParameterListInterface->ElfInput()); |
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216 throw; |
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217 } */ |
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218 return 0; |
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219 } |
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220 |
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221 |
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222 |