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annotate lib/DebugInfo/Symbolize/SymbolizableObjectFile.h @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 7d135dc70f03
children c2174574ed3a
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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/ADT/StringRef.h"
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17 #include "llvm/DebugInfo/DIContext.h"
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18 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
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19 #include "llvm/Support/ErrorOr.h"
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20 #include <cstdint>
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21 #include <map>
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22 #include <memory>
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23 #include <string>
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24 #include <system_error>
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25
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26 namespace llvm {
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27
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28 class DataExtractor;
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29
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30 namespace symbolize {
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31
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32 class SymbolizableObjectFile : public SymbolizableModule {
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33 public:
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34 static ErrorOr<std::unique_ptr<SymbolizableObjectFile>>
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35 create(object::ObjectFile *Obj, std::unique_ptr<DIContext> DICtx);
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36
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37 DILineInfo symbolizeCode(uint64_t ModuleOffset, FunctionNameKind FNKind,
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38 bool UseSymbolTable) const override;
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39 DIInliningInfo symbolizeInlinedCode(uint64_t ModuleOffset,
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40 FunctionNameKind FNKind,
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41 bool UseSymbolTable) const override;
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42 DIGlobal symbolizeData(uint64_t ModuleOffset) const override;
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43
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44 // Return true if this is a 32-bit x86 PE COFF module.
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45 bool isWin32Module() const override;
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46
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47 // Returns the preferred base of the module, i.e. where the loader would place
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48 // it in memory assuming there were no conflicts.
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49 uint64_t getModulePreferredBase() const override;
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50
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51 private:
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52 bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
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53 bool UseSymbolTable) const;
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54
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55 bool getNameFromSymbolTable(object::SymbolRef::Type Type, uint64_t Address,
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56 std::string &Name, uint64_t &Addr,
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57 uint64_t &Size) const;
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58 // For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
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59 // (function descriptor) section and OpdExtractor refers to its contents.
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60 std::error_code addSymbol(const object::SymbolRef &Symbol,
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61 uint64_t SymbolSize,
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62 DataExtractor *OpdExtractor = nullptr,
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63 uint64_t OpdAddress = 0);
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64 std::error_code addCoffExportSymbols(const object::COFFObjectFile *CoffObj);
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65
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66 object::ObjectFile *Module;
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67 std::unique_ptr<DIContext> DebugInfoContext;
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68
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69 struct SymbolDesc {
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70 uint64_t Addr;
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71 // If size is 0, assume that symbol occupies the whole memory range up to
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72 // the following symbol.
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73 uint64_t Size;
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74
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75 friend bool operator<(const SymbolDesc &s1, const SymbolDesc &s2) {
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76 return s1.Addr < s2.Addr;
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77 }
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78 };
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79 std::map<SymbolDesc, StringRef> Functions;
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80 std::map<SymbolDesc, StringRef> Objects;
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81
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82 SymbolizableObjectFile(object::ObjectFile *Obj,
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83 std::unique_ptr<DIContext> DICtx);
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84 };
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86 } // end namespace symbolize
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87
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88 } // end namespace llvm
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89
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90 #endif // LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H