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1 //===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
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2 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "obj2yaml.h"
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121
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11 #include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
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12 #include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
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13 #include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
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14 #include "llvm/Object/COFF.h"
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120
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15 #include "llvm/ObjectYAML/COFFYAML.h"
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121
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16 #include "llvm/ObjectYAML/CodeViewYAMLSymbols.h"
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17 #include "llvm/ObjectYAML/CodeViewYAMLTypes.h"
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18 #include "llvm/Support/ErrorHandling.h"
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19 #include "llvm/Support/YAMLTraits.h"
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20
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21 using namespace llvm;
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22
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23 namespace {
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24
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25 class COFFDumper {
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26 const object::COFFObjectFile &Obj;
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27 COFFYAML::Object YAMLObj;
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83
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28 template <typename T>
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29 void dumpOptionalHeader(T OptionalHeader);
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30 void dumpHeader();
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31 void dumpSections(unsigned numSections);
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32 void dumpSymbols(unsigned numSymbols);
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33
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34 public:
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35 COFFDumper(const object::COFFObjectFile &Obj);
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36 COFFYAML::Object &getYAMLObj();
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37 };
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38
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39 }
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40
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83
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41 COFFDumper::COFFDumper(const object::COFFObjectFile &Obj) : Obj(Obj) {
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42 const object::pe32_header *PE32Header = nullptr;
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43 Obj.getPE32Header(PE32Header);
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44 if (PE32Header) {
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45 dumpOptionalHeader(PE32Header);
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46 } else {
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47 const object::pe32plus_header *PE32PlusHeader = nullptr;
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48 Obj.getPE32PlusHeader(PE32PlusHeader);
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49 if (PE32PlusHeader) {
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50 dumpOptionalHeader(PE32PlusHeader);
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51 }
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52 }
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53 dumpHeader();
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54 dumpSections(Obj.getNumberOfSections());
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55 dumpSymbols(Obj.getNumberOfSymbols());
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56 }
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57
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83
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58 template <typename T> void COFFDumper::dumpOptionalHeader(T OptionalHeader) {
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59 YAMLObj.OptionalHeader = COFFYAML::PEHeader();
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60 YAMLObj.OptionalHeader->Header.AddressOfEntryPoint =
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61 OptionalHeader->AddressOfEntryPoint;
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62 YAMLObj.OptionalHeader->Header.AddressOfEntryPoint =
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63 OptionalHeader->AddressOfEntryPoint;
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64 YAMLObj.OptionalHeader->Header.ImageBase = OptionalHeader->ImageBase;
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65 YAMLObj.OptionalHeader->Header.SectionAlignment =
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66 OptionalHeader->SectionAlignment;
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67 YAMLObj.OptionalHeader->Header.FileAlignment = OptionalHeader->FileAlignment;
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68 YAMLObj.OptionalHeader->Header.MajorOperatingSystemVersion =
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69 OptionalHeader->MajorOperatingSystemVersion;
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70 YAMLObj.OptionalHeader->Header.MinorOperatingSystemVersion =
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71 OptionalHeader->MinorOperatingSystemVersion;
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72 YAMLObj.OptionalHeader->Header.MajorImageVersion =
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73 OptionalHeader->MajorImageVersion;
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74 YAMLObj.OptionalHeader->Header.MinorImageVersion =
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75 OptionalHeader->MinorImageVersion;
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76 YAMLObj.OptionalHeader->Header.MajorSubsystemVersion =
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77 OptionalHeader->MajorSubsystemVersion;
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78 YAMLObj.OptionalHeader->Header.MinorSubsystemVersion =
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79 OptionalHeader->MinorSubsystemVersion;
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80 YAMLObj.OptionalHeader->Header.Subsystem = OptionalHeader->Subsystem;
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81 YAMLObj.OptionalHeader->Header.DLLCharacteristics =
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82 OptionalHeader->DLLCharacteristics;
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83 YAMLObj.OptionalHeader->Header.SizeOfStackReserve =
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84 OptionalHeader->SizeOfStackReserve;
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85 YAMLObj.OptionalHeader->Header.SizeOfStackCommit =
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86 OptionalHeader->SizeOfStackCommit;
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87 YAMLObj.OptionalHeader->Header.SizeOfHeapReserve =
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88 OptionalHeader->SizeOfHeapReserve;
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89 YAMLObj.OptionalHeader->Header.SizeOfHeapCommit =
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90 OptionalHeader->SizeOfHeapCommit;
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91 unsigned I = 0;
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92 for (auto &DestDD : YAMLObj.OptionalHeader->DataDirectories) {
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93 const object::data_directory *DD;
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94 if (Obj.getDataDirectory(I++, DD))
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95 continue;
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96 DestDD = COFF::DataDirectory();
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97 DestDD->RelativeVirtualAddress = DD->RelativeVirtualAddress;
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98 DestDD->Size = DD->Size;
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99 }
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100 }
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101
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83
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102 void COFFDumper::dumpHeader() {
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103 YAMLObj.Header.Machine = Obj.getMachine();
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104 YAMLObj.Header.Characteristics = Obj.getCharacteristics();
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105 }
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106
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121
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107 static void
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108 initializeFileAndStringTable(const llvm::object::COFFObjectFile &Obj,
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109 codeview::StringsAndChecksumsRef &SC) {
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110
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111 ExitOnError Err("Invalid .debug$S section!");
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112 // Iterate all .debug$S sections looking for the checksums and string table.
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113 // Exit as soon as both sections are found.
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114 for (const auto &S : Obj.sections()) {
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115 if (SC.hasStrings() && SC.hasChecksums())
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116 break;
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117
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118 StringRef SectionName;
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119 S.getName(SectionName);
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120 ArrayRef<uint8_t> sectionData;
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121 if (SectionName != ".debug$S")
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122 continue;
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123
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124 const object::coff_section *COFFSection = Obj.getCOFFSection(S);
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125
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126 Obj.getSectionContents(COFFSection, sectionData);
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127
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128 BinaryStreamReader Reader(sectionData, support::little);
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129 uint32_t Magic;
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130
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131 Err(Reader.readInteger(Magic));
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132 assert(Magic == COFF::DEBUG_SECTION_MAGIC && "Invalid .debug$S section!");
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133
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134 codeview::DebugSubsectionArray Subsections;
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135 Err(Reader.readArray(Subsections, Reader.bytesRemaining()));
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136
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137 SC.initialize(Subsections);
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138 }
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139 }
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140
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141 void COFFDumper::dumpSections(unsigned NumSections) {
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83
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142 std::vector<COFFYAML::Section> &YAMLSections = YAMLObj.Sections;
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121
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143 codeview::StringsAndChecksumsRef SC;
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144 initializeFileAndStringTable(Obj, SC);
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145
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83
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146 for (const auto &ObjSection : Obj.sections()) {
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147 const object::coff_section *COFFSection = Obj.getCOFFSection(ObjSection);
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148 COFFYAML::Section NewYAMLSection;
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149 ObjSection.getName(NewYAMLSection.Name);
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150 NewYAMLSection.Header.Characteristics = COFFSection->Characteristics;
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151 NewYAMLSection.Header.VirtualAddress = ObjSection.getAddress();
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152 NewYAMLSection.Header.VirtualSize = COFFSection->VirtualSize;
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121
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153 NewYAMLSection.Header.NumberOfLineNumbers =
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154 COFFSection->NumberOfLinenumbers;
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155 NewYAMLSection.Header.NumberOfRelocations =
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156 COFFSection->NumberOfRelocations;
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157 NewYAMLSection.Header.PointerToLineNumbers =
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158 COFFSection->PointerToLinenumbers;
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159 NewYAMLSection.Header.PointerToRawData = COFFSection->PointerToRawData;
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160 NewYAMLSection.Header.PointerToRelocations =
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161 COFFSection->PointerToRelocations;
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162 NewYAMLSection.Header.SizeOfRawData = COFFSection->SizeOfRawData;
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83
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163 NewYAMLSection.Alignment = ObjSection.getAlignment();
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120
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164 assert(NewYAMLSection.Alignment <= 8192);
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165
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166 ArrayRef<uint8_t> sectionData;
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83
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167 if (!ObjSection.isBSS())
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168 Obj.getSectionContents(COFFSection, sectionData);
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169 NewYAMLSection.SectionData = yaml::BinaryRef(sectionData);
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170
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121
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171 if (NewYAMLSection.Name == ".debug$S")
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172 NewYAMLSection.DebugS = CodeViewYAML::fromDebugS(sectionData, SC);
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173 else if (NewYAMLSection.Name == ".debug$T")
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174 NewYAMLSection.DebugT = CodeViewYAML::fromDebugT(sectionData);
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175
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176 std::vector<COFFYAML::Relocation> Relocations;
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83
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177 for (const auto &Reloc : ObjSection.relocations()) {
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77
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178 const object::coff_relocation *reloc = Obj.getCOFFRelocation(Reloc);
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179 COFFYAML::Relocation Rel;
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77
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180 object::symbol_iterator Sym = Reloc.getSymbol();
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120
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181 Expected<StringRef> SymbolNameOrErr = Sym->getName();
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182 if (!SymbolNameOrErr) {
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183 std::string Buf;
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184 raw_string_ostream OS(Buf);
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185 logAllUnhandledErrors(SymbolNameOrErr.takeError(), OS, "");
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186 OS.flush();
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187 report_fatal_error(Buf);
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188 }
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95
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189 Rel.SymbolName = *SymbolNameOrErr;
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190 Rel.VirtualAddress = reloc->VirtualAddress;
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191 Rel.Type = reloc->Type;
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192 Relocations.push_back(Rel);
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193 }
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83
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194 NewYAMLSection.Relocations = Relocations;
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195 YAMLSections.push_back(NewYAMLSection);
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196 }
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197 }
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198
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77
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199 static void
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200 dumpFunctionDefinition(COFFYAML::Symbol *Sym,
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201 const object::coff_aux_function_definition *ObjFD) {
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202 COFF::AuxiliaryFunctionDefinition YAMLFD;
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203 YAMLFD.TagIndex = ObjFD->TagIndex;
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204 YAMLFD.TotalSize = ObjFD->TotalSize;
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205 YAMLFD.PointerToLinenumber = ObjFD->PointerToLinenumber;
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206 YAMLFD.PointerToNextFunction = ObjFD->PointerToNextFunction;
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207
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208 Sym->FunctionDefinition = YAMLFD;
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209 }
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210
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211 static void
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212 dumpbfAndEfLineInfo(COFFYAML::Symbol *Sym,
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213 const object::coff_aux_bf_and_ef_symbol *ObjBES) {
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214 COFF::AuxiliarybfAndefSymbol YAMLAAS;
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215 YAMLAAS.Linenumber = ObjBES->Linenumber;
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216 YAMLAAS.PointerToNextFunction = ObjBES->PointerToNextFunction;
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217
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218 Sym->bfAndefSymbol = YAMLAAS;
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219 }
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220
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221 static void dumpWeakExternal(COFFYAML::Symbol *Sym,
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222 const object::coff_aux_weak_external *ObjWE) {
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223 COFF::AuxiliaryWeakExternal YAMLWE;
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224 YAMLWE.TagIndex = ObjWE->TagIndex;
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225 YAMLWE.Characteristics = ObjWE->Characteristics;
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226
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227 Sym->WeakExternal = YAMLWE;
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228 }
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229
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230 static void
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231 dumpSectionDefinition(COFFYAML::Symbol *Sym,
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83
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232 const object::coff_aux_section_definition *ObjSD,
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233 bool IsBigObj) {
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77
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234 COFF::AuxiliarySectionDefinition YAMLASD;
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83
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235 int32_t AuxNumber = ObjSD->getNumber(IsBigObj);
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77
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236 YAMLASD.Length = ObjSD->Length;
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237 YAMLASD.NumberOfRelocations = ObjSD->NumberOfRelocations;
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238 YAMLASD.NumberOfLinenumbers = ObjSD->NumberOfLinenumbers;
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239 YAMLASD.CheckSum = ObjSD->CheckSum;
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83
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240 YAMLASD.Number = AuxNumber;
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77
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241 YAMLASD.Selection = ObjSD->Selection;
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242
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243 Sym->SectionDefinition = YAMLASD;
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244 }
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245
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246 static void
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247 dumpCLRTokenDefinition(COFFYAML::Symbol *Sym,
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248 const object::coff_aux_clr_token *ObjCLRToken) {
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249 COFF::AuxiliaryCLRToken YAMLCLRToken;
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250 YAMLCLRToken.AuxType = ObjCLRToken->AuxType;
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251 YAMLCLRToken.SymbolTableIndex = ObjCLRToken->SymbolTableIndex;
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252
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253 Sym->CLRToken = YAMLCLRToken;
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254 }
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255
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256 void COFFDumper::dumpSymbols(unsigned NumSymbols) {
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257 std::vector<COFFYAML::Symbol> &Symbols = YAMLObj.Symbols;
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77
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258 for (const auto &S : Obj.symbols()) {
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83
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259 object::COFFSymbolRef Symbol = Obj.getCOFFSymbol(S);
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260 COFFYAML::Symbol Sym;
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261 Obj.getSymbolName(Symbol, Sym.Name);
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83
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262 Sym.SimpleType = COFF::SymbolBaseType(Symbol.getBaseType());
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263 Sym.ComplexType = COFF::SymbolComplexType(Symbol.getComplexType());
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264 Sym.Header.StorageClass = Symbol.getStorageClass();
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265 Sym.Header.Value = Symbol.getValue();
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266 Sym.Header.SectionNumber = Symbol.getSectionNumber();
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267 Sym.Header.NumberOfAuxSymbols = Symbol.getNumberOfAuxSymbols();
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77
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268
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83
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269 if (Symbol.getNumberOfAuxSymbols() > 0) {
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77
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270 ArrayRef<uint8_t> AuxData = Obj.getSymbolAuxData(Symbol);
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83
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271 if (Symbol.isFunctionDefinition()) {
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77
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272 // This symbol represents a function definition.
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83
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273 assert(Symbol.getNumberOfAuxSymbols() == 1 &&
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77
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274 "Expected a single aux symbol to describe this function!");
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275
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276 const object::coff_aux_function_definition *ObjFD =
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277 reinterpret_cast<const object::coff_aux_function_definition *>(
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278 AuxData.data());
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279 dumpFunctionDefinition(&Sym, ObjFD);
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83
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280 } else if (Symbol.isFunctionLineInfo()) {
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77
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281 // This symbol describes function line number information.
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83
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282 assert(Symbol.getNumberOfAuxSymbols() == 1 &&
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283 "Expected a single aux symbol to describe this function!");
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77
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284
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285 const object::coff_aux_bf_and_ef_symbol *ObjBES =
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286 reinterpret_cast<const object::coff_aux_bf_and_ef_symbol *>(
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287 AuxData.data());
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288 dumpbfAndEfLineInfo(&Sym, ObjBES);
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83
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289 } else if (Symbol.isAnyUndefined()) {
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77
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290 // This symbol represents a weak external definition.
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83
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291 assert(Symbol.getNumberOfAuxSymbols() == 1 &&
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292 "Expected a single aux symbol to describe this weak symbol!");
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77
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293
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294 const object::coff_aux_weak_external *ObjWE =
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295 reinterpret_cast<const object::coff_aux_weak_external *>(
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296 AuxData.data());
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297 dumpWeakExternal(&Sym, ObjWE);
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83
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298 } else if (Symbol.isFileRecord()) {
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77
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299 // This symbol represents a file record.
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300 Sym.File = StringRef(reinterpret_cast<const char *>(AuxData.data()),
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83
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301 Symbol.getNumberOfAuxSymbols() *
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302 Obj.getSymbolTableEntrySize())
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77
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303 .rtrim(StringRef("\0", /*length=*/1));
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83
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304 } else if (Symbol.isSectionDefinition()) {
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77
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305 // This symbol represents a section definition.
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83
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306 assert(Symbol.getNumberOfAuxSymbols() == 1 &&
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77
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307 "Expected a single aux symbol to describe this section!");
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308
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309 const object::coff_aux_section_definition *ObjSD =
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310 reinterpret_cast<const object::coff_aux_section_definition *>(
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311 AuxData.data());
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83
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312 dumpSectionDefinition(&Sym, ObjSD, Symbol.isBigObj());
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313 } else if (Symbol.isCLRToken()) {
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77
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314 // This symbol represents a CLR token definition.
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83
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315 assert(Symbol.getNumberOfAuxSymbols() == 1 &&
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316 "Expected a single aux symbol to describe this CLR Token!");
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|
77
|
317
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318 const object::coff_aux_clr_token *ObjCLRToken =
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319 reinterpret_cast<const object::coff_aux_clr_token *>(
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320 AuxData.data());
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321 dumpCLRTokenDefinition(&Sym, ObjCLRToken);
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322 } else {
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323 llvm_unreachable("Unhandled auxiliary symbol!");
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|
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324 }
|
|
|
325 }
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0
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326 Symbols.push_back(Sym);
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327 }
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328 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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329
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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330 COFFYAML::Object &COFFDumper::getYAMLObj() {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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331 return YAMLObj;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
332 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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333
|
|
77
|
334 std::error_code coff2yaml(raw_ostream &Out, const object::COFFObjectFile &Obj) {
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0
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|
335 COFFDumper Dumper(Obj);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
336
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
337 yaml::Output Yout(Out);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
338 Yout << Dumper.getYAMLObj();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
339
|
|
95
|
340 return std::error_code();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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|
341 }
|
