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annotate lib/DebugInfo/Symbolize/SymbolizableObjectFile.h @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
children
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1 //===- SymbolizableObjectFile.h ---------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // This file declares the SymbolizableObjectFile class.
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10 //
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11 //===----------------------------------------------------------------------===//
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12 #ifndef LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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13 #define LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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14
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15 #include "llvm/ADT/StringRef.h"
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16 #include "llvm/DebugInfo/DIContext.h"
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17 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
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18 #include "llvm/Support/ErrorOr.h"
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19 #include <cstdint>
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20 #include <map>
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21 #include <memory>
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22 #include <string>
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23 #include <system_error>
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24
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25 namespace llvm {
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26
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27 class DataExtractor;
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28
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29 namespace symbolize {
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30
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31 class SymbolizableObjectFile : public SymbolizableModule {
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32 public:
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33 static ErrorOr<std::unique_ptr<SymbolizableObjectFile>>
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34 create(const object::ObjectFile *Obj, std::unique_ptr<DIContext> DICtx,
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35 bool UntagAddresses);
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36
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37 DILineInfo symbolizeCode(object::SectionedAddress ModuleOffset,
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38 FunctionNameKind FNKind,
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39 bool UseSymbolTable) const override;
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40 DIInliningInfo symbolizeInlinedCode(object::SectionedAddress ModuleOffset,
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41 FunctionNameKind FNKind,
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42 bool UseSymbolTable) const override;
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43 DIGlobal symbolizeData(object::SectionedAddress ModuleOffset) const override;
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44 std::vector<DILocal>
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45 symbolizeFrame(object::SectionedAddress ModuleOffset) const override;
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47 // Return true if this is a 32-bit x86 PE COFF module.
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48 bool isWin32Module() const override;
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49
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50 // Returns the preferred base of the module, i.e. where the loader would place
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51 // it in memory assuming there were no conflicts.
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52 uint64_t getModulePreferredBase() const override;
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53
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54 private:
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55 bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
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56 bool UseSymbolTable) const;
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57
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58 bool getNameFromSymbolTable(object::SymbolRef::Type Type, uint64_t Address,
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59 std::string &Name, uint64_t &Addr,
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60 uint64_t &Size) const;
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61 // For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
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62 // (function descriptor) section and OpdExtractor refers to its contents.
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63 std::error_code addSymbol(const object::SymbolRef &Symbol,
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64 uint64_t SymbolSize,
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65 DataExtractor *OpdExtractor = nullptr,
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66 uint64_t OpdAddress = 0);
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67 std::error_code addCoffExportSymbols(const object::COFFObjectFile *CoffObj);
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68
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69 /// Search for the first occurence of specified Address in ObjectFile.
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70 uint64_t getModuleSectionIndexForAddress(uint64_t Address) const;
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72 const object::ObjectFile *Module;
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73 std::unique_ptr<DIContext> DebugInfoContext;
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74 bool UntagAddresses;
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76 struct SymbolDesc {
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77 uint64_t Addr;
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78 // If size is 0, assume that symbol occupies the whole memory range up to
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79 // the following symbol.
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80 uint64_t Size;
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81
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82 bool operator<(const SymbolDesc &RHS) const {
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83 return Addr != RHS.Addr ? Addr < RHS.Addr : Size < RHS.Size;
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84 }
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85 };
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86 std::vector<std::pair<SymbolDesc, StringRef>> Functions;
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87 std::vector<std::pair<SymbolDesc, StringRef>> Objects;
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88
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89 SymbolizableObjectFile(const object::ObjectFile *Obj,
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90 std::unique_ptr<DIContext> DICtx,
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91 bool UntagAddresses);
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92 };
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94 } // end namespace symbolize
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96 } // end namespace llvm
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98 #endif // LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H