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::DWARFDataExtractor &debug_info, lldb::offset_t *offset_ptr);
33 size_t ExtractDIEsIfNeeded (bool cu_die_only);
35 const dw_addr_t address,
36 DWARFDebugInfoEntry** function_die,
37 DWARFDebugInfoEntry** block_die);
39 size_t AppendDIEsWithTag (const dw_tag_t tag, DWARFDIECollection& matching_dies, uint32_t depth = UINT32_MAX) const;
41 bool Verify(lldb_private::Stream *s) const;
42 void Dump(lldb_private::Stream *s) const;
43 dw_offset_t GetOffset() const { return m_offset; }
44 uint32_t Size() const { return 11; /* Size in bytes of the compile unit header */ }
45 bool ContainsDIEOffset(dw_offset_t die_offset) const { return die_offset >= GetFirstDIEOffset() && die_offset < GetNextCompileUnitOffset(); }
46 dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
47 dw_offset_t GetNextCompileUnitOffset() const { return m_offset + m_length + 4; }
48 size_t GetDebugInfoSize() const { return m_length + 4 - Size(); /* Size in bytes of the .debug_info data associated with this compile unit. */ }
49 uint32_t GetLength() const { return m_length; }
50 uint16_t GetVersion() const { return m_version; }
51 const DWARFAbbreviationDeclarationSet* GetAbbreviations() const { return m_abbrevs; }
52 dw_offset_t GetAbbrevOffset() const;
53 uint8_t GetAddressByteSize() const { return m_addr_size; }
54 dw_addr_t GetBaseAddress() const { return m_base_addr; }
55 void ClearDIEs(bool keep_compile_unit_die);
56 void BuildAddressRangeTable (SymbolFileDWARF* dwarf2Data,
57 DWARFDebugAranges* debug_aranges,
58 bool clear_dies_if_already_not_parsed);
61 SetBaseAddress(dw_addr_t base_addr)
63 m_base_addr = base_addr;
66 const DWARFDebugInfoEntry*
67 GetCompileUnitDIEOnly()
69 ExtractDIEsIfNeeded (true);
70 if (m_die_array.empty())
72 return &m_die_array[0];
75 const DWARFDebugInfoEntry*
78 ExtractDIEsIfNeeded (false);
79 if (m_die_array.empty())
81 return &m_die_array[0];
85 AddDIE (DWARFDebugInfoEntry& die)
87 // The average bytes per DIE entry has been seen to be
88 // around 14-20 so lets pre-reserve half of that since
89 // we are now stripping the NULL tags.
91 // Only reserve the memory if we are adding children of
92 // the main compile unit DIE. The compile unit DIE is always
93 // the first entry, so if our size is 1, then we are adding
94 // the first compile unit child DIE and should reserve
96 if (m_die_array.empty())
97 m_die_array.reserve(GetDebugInfoSize() / 24);
98 m_die_array.push_back(die);
102 HasDIEsParsed () const
104 return m_die_array.size() > 1;
108 GetDIEAtIndexUnchecked (uint32_t idx)
110 return &m_die_array[idx];
114 GetDIEPtr (dw_offset_t die_offset);
116 const DWARFDebugInfoEntry*
117 GetDIEPtrContainingOffset (dw_offset_t die_offset);
120 GetAddressByteSize(const DWARFCompileUnit* cu);
123 GetDefaultAddressSize();
126 SetDefaultAddressSize(uint8_t addr_size);
141 Supports_DW_AT_APPLE_objc_complete_type ();
144 DW_AT_decl_file_attributes_are_invalid();
147 Supports_unnamed_objc_bitfields ();
150 // AddGlobalDIEByIndex (uint32_t die_idx);
153 // AddGlobal (const DWARFDebugInfoEntry* die);
156 Index (const uint32_t cu_idx,
157 NameToDIE& func_basenames,
158 NameToDIE& func_fullnames,
159 NameToDIE& func_methods,
160 NameToDIE& func_selectors,
161 NameToDIE& objc_class_selectors,
164 NameToDIE& namespaces);
166 const DWARFDebugAranges &
167 GetFunctionAranges ();
170 GetSymbolFileDWARF () const
179 GetProducerVersionMajor();
182 GetProducerVersionMinor();
185 GetProducerVersionUpdate();
188 SymbolFileDWARF* m_dwarf2Data;
189 const DWARFAbbreviationDeclarationSet *m_abbrevs;
191 DWARFDebugInfoEntry::collection m_die_array; // The compile unit debug information entry item
192 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
193 dw_addr_t m_base_addr;
194 dw_offset_t m_offset;
199 uint32_t m_producer_version_major;
200 uint32_t m_producer_version_minor;
201 uint32_t m_producer_version_update;
204 ParseProducerInfo ();
206 DISALLOW_COPY_AND_ASSIGN (DWARFCompileUnit);
209 #endif // SymbolFileDWARF_DWARFCompileUnit_h_