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annotate lib/DebugInfo/Symbolize/SymbolizableObjectFile.h @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
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children 803732b1fca8
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1 //===-- SymbolizableObjectFile.h -------------------------------- C++ -----===//
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2 //
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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 // This file declares the SymbolizableObjectFile class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13 #ifndef LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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14 #define LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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15
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16 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
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17 #include <map>
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18
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19 namespace llvm {
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20 class DataExtractor;
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21 }
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22
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23 namespace llvm {
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24 namespace symbolize {
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25
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26 class SymbolizableObjectFile : public SymbolizableModule {
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27 public:
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28 static ErrorOr<std::unique_ptr<SymbolizableObjectFile>>
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29 create(object::ObjectFile *Obj, std::unique_ptr<DIContext> DICtx);
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30
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31 DILineInfo symbolizeCode(uint64_t ModuleOffset, FunctionNameKind FNKind,
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32 bool UseSymbolTable) const override;
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33 DIInliningInfo symbolizeInlinedCode(uint64_t ModuleOffset,
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34 FunctionNameKind FNKind,
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35 bool UseSymbolTable) const override;
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36 DIGlobal symbolizeData(uint64_t ModuleOffset) const override;
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37
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38 // Return true if this is a 32-bit x86 PE COFF module.
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39 bool isWin32Module() const override;
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40
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41 // Returns the preferred base of the module, i.e. where the loader would place
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42 // it in memory assuming there were no conflicts.
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43 uint64_t getModulePreferredBase() const override;
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44
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45 private:
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46 bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
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47 bool UseSymbolTable) const;
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48
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49 bool getNameFromSymbolTable(object::SymbolRef::Type Type, uint64_t Address,
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50 std::string &Name, uint64_t &Addr,
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51 uint64_t &Size) const;
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52 // For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
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53 // (function descriptor) section and OpdExtractor refers to its contents.
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54 std::error_code addSymbol(const object::SymbolRef &Symbol,
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55 uint64_t SymbolSize,
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56 DataExtractor *OpdExtractor = nullptr,
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57 uint64_t OpdAddress = 0);
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58 std::error_code addCoffExportSymbols(const object::COFFObjectFile *CoffObj);
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59
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60 object::ObjectFile *Module;
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61 std::unique_ptr<DIContext> DebugInfoContext;
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62
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63 struct SymbolDesc {
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64 uint64_t Addr;
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65 // If size is 0, assume that symbol occupies the whole memory range up to
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66 // the following symbol.
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67 uint64_t Size;
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68 friend bool operator<(const SymbolDesc &s1, const SymbolDesc &s2) {
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69 return s1.Addr < s2.Addr;
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70 }
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71 };
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72 std::map<SymbolDesc, StringRef> Functions;
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73 std::map<SymbolDesc, StringRef> Objects;
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74
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75 SymbolizableObjectFile(object::ObjectFile *Obj,
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76 std::unique_ptr<DIContext> DICtx);
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77 };
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78
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79 } // namespace symbolize
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80 } // namespace llvm
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81
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82 #endif // LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H