Mercurial > hg > CbC > CbC_llvm

annotate lib/DebugInfo/DWARFCompileUnit.h @ 21:fc4a6333556f

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change error message when tail call elimination is failed.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 14 Oct 2013 19:09:00 +0900
parents 9ad51c7bc036
children
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1 //===-- DWARFCompileUnit.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 #ifndef LLVM_DEBUGINFO_DWARFCOMPILEUNIT_H
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11 #define LLVM_DEBUGINFO_DWARFCOMPILEUNIT_H
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13 #include "DWARFDebugAbbrev.h"
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14 #include "DWARFDebugInfoEntry.h"
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15 #include "DWARFDebugRangeList.h"
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16 #include "DWARFRelocMap.h"
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17 #include <vector>
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18
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19 namespace llvm {
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20
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21 class DWARFDebugAbbrev;
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22 class StringRef;
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23 class raw_ostream;
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24
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25 class DWARFCompileUnit {
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26 const DWARFDebugAbbrev *Abbrev;
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27 StringRef InfoSection;
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28 StringRef AbbrevSection;
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29 StringRef RangeSection;
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30 StringRef StringSection;
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31 StringRef StringOffsetSection;
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32 StringRef AddrOffsetSection;
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33 const RelocAddrMap *RelocMap;
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34 bool isLittleEndian;
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35
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36 uint32_t Offset;
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37 uint32_t Length;
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38 uint16_t Version;
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39 const DWARFAbbreviationDeclarationSet *Abbrevs;
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40 uint8_t AddrSize;
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41 uint64_t BaseAddr;
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42 // The compile unit debug information entry item.
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43 std::vector<DWARFDebugInfoEntryMinimal> DieArray;
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44 public:
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45
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46 DWARFCompileUnit(const DWARFDebugAbbrev *DA, StringRef IS, StringRef AS,
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47 StringRef RS, StringRef SS, StringRef SOS, StringRef AOS,
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48 const RelocAddrMap *M, bool LE) :
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49 Abbrev(DA), InfoSection(IS), AbbrevSection(AS),
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50 RangeSection(RS), StringSection(SS), StringOffsetSection(SOS),
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51 AddrOffsetSection(AOS), RelocMap(M), isLittleEndian(LE) {
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52 clear();
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53 }
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54
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55 StringRef getStringSection() const { return StringSection; }
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56 StringRef getStringOffsetSection() const { return StringOffsetSection; }
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57 StringRef getAddrOffsetSection() const { return AddrOffsetSection; }
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58 const RelocAddrMap *getRelocMap() const { return RelocMap; }
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59 DataExtractor getDebugInfoExtractor() const;
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60
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61 bool extract(DataExtractor debug_info, uint32_t* offset_ptr);
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62 uint32_t extract(uint32_t offset, DataExtractor debug_info_data,
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63 const DWARFAbbreviationDeclarationSet *abbrevs);
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64
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65 /// extractDIEsIfNeeded - Parses a compile unit and indexes its DIEs if it
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66 /// hasn't already been done. Returns the number of DIEs parsed at this call.
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67 size_t extractDIEsIfNeeded(bool cu_die_only);
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68 /// extractRangeList - extracts the range list referenced by this compile
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69 /// unit from .debug_ranges section. Returns true on success.
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70 /// Requires that compile unit is already extracted.
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71 bool extractRangeList(uint32_t RangeListOffset,
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72 DWARFDebugRangeList &RangeList) const;
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73 void clear();
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74 void dump(raw_ostream &OS);
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75 uint32_t getOffset() const { return Offset; }
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76 /// Size in bytes of the compile unit header.
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77 uint32_t getSize() const { return 11; }
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78 bool containsDIEOffset(uint32_t die_offset) const {
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79 return die_offset >= getFirstDIEOffset() &&
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80 die_offset < getNextCompileUnitOffset();
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81 }
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82 uint32_t getFirstDIEOffset() const { return Offset + getSize(); }
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83 uint32_t getNextCompileUnitOffset() const { return Offset + Length + 4; }
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84 /// Size in bytes of the .debug_info data associated with this compile unit.
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85 size_t getDebugInfoSize() const { return Length + 4 - getSize(); }
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86 uint32_t getLength() const { return Length; }
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87 uint16_t getVersion() const { return Version; }
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88 const DWARFAbbreviationDeclarationSet *getAbbreviations() const {
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89 return Abbrevs;
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90 }
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91 uint8_t getAddressByteSize() const { return AddrSize; }
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92 uint64_t getBaseAddress() const { return BaseAddr; }
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93
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94 void setBaseAddress(uint64_t base_addr) {
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95 BaseAddr = base_addr;
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96 }
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97
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98 const DWARFDebugInfoEntryMinimal *
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99 getCompileUnitDIE(bool extract_cu_die_only = true) {
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100 extractDIEsIfNeeded(extract_cu_die_only);
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101 if (DieArray.empty())
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102 return NULL;
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103 return &DieArray[0];
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104 }
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105
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106 const char *getCompilationDir();
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107
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108 /// setDIERelations - We read in all of the DIE entries into our flat list
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109 /// of DIE entries and now we need to go back through all of them and set the
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110 /// parent, sibling and child pointers for quick DIE navigation.
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111 void setDIERelations();
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112
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113 void addDIE(DWARFDebugInfoEntryMinimal &die) {
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114 // The average bytes per DIE entry has been seen to be
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115 // around 14-20 so lets pre-reserve the needed memory for
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116 // our DIE entries accordingly. Search forward for "Compute
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117 // average bytes per DIE" to see #if'ed out code that does
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118 // that determination.
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119
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120 // Only reserve the memory if we are adding children of
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121 // the main compile unit DIE. The compile unit DIE is always
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122 // the first entry, so if our size is 1, then we are adding
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123 // the first compile unit child DIE and should reserve
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124 // the memory.
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125 if (DieArray.empty())
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126 DieArray.reserve(getDebugInfoSize() / 14);
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127 DieArray.push_back(die);
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128 }
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129
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130 void clearDIEs(bool keep_compile_unit_die);
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131
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132 void buildAddressRangeTable(DWARFDebugAranges *debug_aranges,
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133 bool clear_dies_if_already_not_parsed);
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134
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135 /// getInlinedChainForAddress - fetches inlined chain for a given address.
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136 /// Returns empty chain if there is no subprogram containing address.
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137 DWARFDebugInfoEntryMinimal::InlinedChain getInlinedChainForAddress(
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138 uint64_t Address);
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139 };
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140
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141 }
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142
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143 #endif