1 //===-- DWARFCompileUnit.h --------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef SymbolFileDWARF_DWARFCompileUnit_h_
11 #define SymbolFileDWARF_DWARFCompileUnit_h_
13 #include "DWARFDebugInfoEntry.h"
14 #include "SymbolFileDWARF.h"
18 class DWARFCompileUnit
30 DWARFCompileUnit(SymbolFileDWARF* dwarf2Data);
32 bool Extract(const lldb_private::DataExtractor &debug_info, lldb::offset_t *offset_ptr);
33 dw_offset_t Extract(lldb::offset_t offset, const lldb_private::DataExtractor& debug_info_data, const DWARFAbbreviationDeclarationSet* abbrevs);
34 size_t ExtractDIEsIfNeeded (bool cu_die_only);
36 const dw_addr_t address,
37 DWARFDebugInfoEntry** function_die,
38 DWARFDebugInfoEntry** block_die);
40 size_t AppendDIEsWithTag (const dw_tag_t tag, DWARFDIECollection& matching_dies, uint32_t depth = UINT32_MAX) const;
42 bool Verify(lldb_private::Stream *s) const;
43 void Dump(lldb_private::Stream *s) const;
44 dw_offset_t GetOffset() const { return m_offset; }
45 uint32_t Size() const { return 11; /* Size in bytes of the compile unit header */ }
46 bool ContainsDIEOffset(dw_offset_t die_offset) const { return die_offset >= GetFirstDIEOffset() && die_offset < GetNextCompileUnitOffset(); }
47 dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
48 dw_offset_t GetNextCompileUnitOffset() const { return m_offset + m_length + 4; }
49 size_t GetDebugInfoSize() const { return m_length + 4 - Size(); /* Size in bytes of the .debug_info data associated with this compile unit. */ }
50 uint32_t GetLength() const { return m_length; }
51 uint16_t GetVersion() const { return m_version; }
52 const DWARFAbbreviationDeclarationSet* GetAbbreviations() const { return m_abbrevs; }
53 dw_offset_t GetAbbrevOffset() const;
54 uint8_t GetAddressByteSize() const { return m_addr_size; }
55 dw_addr_t GetBaseAddress() const { return m_base_addr; }
56 void ClearDIEs(bool keep_compile_unit_die);
57 void BuildAddressRangeTable (SymbolFileDWARF* dwarf2Data,
58 DWARFDebugAranges* debug_aranges,
59 bool clear_dies_if_already_not_parsed);
62 SetBaseAddress(dw_addr_t base_addr)
64 m_base_addr = base_addr;
67 const DWARFDebugInfoEntry*
68 GetCompileUnitDIEOnly()
70 ExtractDIEsIfNeeded (true);
71 if (m_die_array.empty())
73 return &m_die_array[0];
76 const DWARFDebugInfoEntry*
79 ExtractDIEsIfNeeded (false);
80 if (m_die_array.empty())
82 return &m_die_array[0];
86 AddDIE (DWARFDebugInfoEntry& die)
88 // The average bytes per DIE entry has been seen to be
89 // around 14-20 so lets pre-reserve half of that since
90 // we are now stripping the NULL tags.
92 // Only reserve the memory if we are adding children of
93 // the main compile unit DIE. The compile unit DIE is always
94 // the first entry, so if our size is 1, then we are adding
95 // the first compile unit child DIE and should reserve
97 if (m_die_array.empty())
98 m_die_array.reserve(GetDebugInfoSize() / 24);
99 m_die_array.push_back(die);
103 HasDIEsParsed () const
105 return m_die_array.size() > 1;
109 GetDIEAtIndexUnchecked (uint32_t idx)
111 return &m_die_array[idx];
115 GetDIEPtr (dw_offset_t die_offset);
117 const DWARFDebugInfoEntry*
118 GetDIEPtrContainingOffset (dw_offset_t die_offset);
121 GetAddressByteSize(const DWARFCompileUnit* cu);
124 GetDefaultAddressSize();
127 SetDefaultAddressSize(uint8_t addr_size);
142 Supports_DW_AT_APPLE_objc_complete_type ();
145 DW_AT_decl_file_attributes_are_invalid();
148 Supports_unnamed_objc_bitfields ();
151 // AddGlobalDIEByIndex (uint32_t die_idx);
154 // AddGlobal (const DWARFDebugInfoEntry* die);
157 Index (const uint32_t cu_idx,
158 NameToDIE& func_basenames,
159 NameToDIE& func_fullnames,
160 NameToDIE& func_methods,
161 NameToDIE& func_selectors,
162 NameToDIE& objc_class_selectors,
165 NameToDIE& namespaces);
167 const DWARFDebugAranges &
168 GetFunctionAranges ();
171 GetSymbolFileDWARF () const
180 GetProducerVersionMajor();
183 GetProducerVersionMinor();
186 GetProducerVersionUpdate();
189 SymbolFileDWARF* m_dwarf2Data;
190 const DWARFAbbreviationDeclarationSet *m_abbrevs;
192 DWARFDebugInfoEntry::collection m_die_array; // The compile unit debug information entry item
193 std::unique_ptr<DWARFDebugAranges> m_func_aranges_ap; // A table similar to the .debug_aranges table, but this one points to the exact DW_TAG_subprogram DIEs
194 dw_addr_t m_base_addr;
195 dw_offset_t m_offset;
200 uint32_t m_producer_version_major;
201 uint32_t m_producer_version_minor;
202 uint32_t m_producer_version_update;
205 ParseProducerInfo ();
207 DISALLOW_COPY_AND_ASSIGN (DWARFCompileUnit);
210 #endif // SymbolFileDWARF_DWARFCompileUnit_h_