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DWARFDebugInfo.h
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1//===-- DWARFDebugInfo.h ----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H
10#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H
11
12#include <map>
13#include <vector>
14
15#include "DWARFDIE.h"
16#include "DWARFTypeUnit.h"
17#include "DWARFUnit.h"
18#include "SymbolFileDWARF.h"
19#include "lldb/lldb-private.h"
20#include "llvm/Support/Error.h"
21
22namespace lldb_private::plugin {
23namespace dwarf {
24class DWARFContext;
25
27public:
28 typedef dw_offset_t (*Callback)(SymbolFileDWARF *dwarf2Data, DWARFUnit *cu,
30 const dw_offset_t next_offset,
31 const uint32_t depth, void *userData);
32
34
35 size_t GetNumUnits();
36 DWARFUnit *GetUnitAtIndex(size_t idx);
38 uint32_t *idx_ptr = nullptr);
40 dw_offset_t die_offset);
41 DWARFUnit *GetUnit(const DIERef &die_ref);
42 DWARFTypeUnit *GetTypeUnitForHash(uint64_t hash);
43 bool ContainsTypeUnits();
44 DWARFDIE GetDIE(const DIERef &die_ref);
45
46 enum {
47 eDumpFlag_Verbose = (1 << 0), // Verbose dumping
48 eDumpFlag_ShowForm = (1 << 1), // Show the DW_form type
50 (1 << 2) // Show all parent DIEs when dumping single DIEs
51 };
52
54
55protected:
56 typedef std::vector<DWARFUnitSP> UnitColl;
57
60
61 llvm::once_flag m_units_once_flag;
63
64 std::unique_ptr<DWARFDebugAranges>
65 m_cu_aranges_up; // A quick address to compile unit table
66
67 std::vector<std::pair<uint64_t, uint32_t>> m_type_hash_to_unit_index;
68
69private:
70 // All parsing needs to be done partially any managed by this class as
71 // accessors are called.
73
74 void ParseUnitsFor(DIERef::Section section);
75
76 uint32_t FindUnitIndex(DIERef::Section section, dw_offset_t offset);
77
78 DWARFDebugInfo(const DWARFDebugInfo &) = delete;
79 const DWARFDebugInfo &operator=(const DWARFDebugInfo &) = delete;
80};
81} // namespace dwarf
82} // namespace lldb_private::plugin
83
84#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H
Identifies a DWARF debug info entry within a given Module.
Definition: DIERef.h:30
DWARFDebugInfoEntry objects assume that they are living in one big vector and do pointer arithmetic o...
DWARFTypeUnit * GetTypeUnitForHash(uint64_t hash)
DWARFUnit * GetUnitAtOffset(DIERef::Section section, dw_offset_t cu_offset, uint32_t *idx_ptr=nullptr)
uint32_t FindUnitIndex(DIERef::Section section, dw_offset_t offset)
const DWARFDebugAranges & GetCompileUnitAranges()
void ParseUnitsFor(DIERef::Section section)
std::vector< std::pair< uint64_t, uint32_t > > m_type_hash_to_unit_index
const DWARFDebugInfo & operator=(const DWARFDebugInfo &)=delete
DWARFDIE GetDIE(const DIERef &die_ref)
std::unique_ptr< DWARFDebugAranges > m_cu_aranges_up
DWARFUnit * GetUnitContainingDIEOffset(DIERef::Section section, dw_offset_t die_offset)
dw_offset_t(* Callback)(SymbolFileDWARF *dwarf2Data, DWARFUnit *cu, DWARFDebugInfoEntry *die, const dw_offset_t next_offset, const uint32_t depth, void *userData)
DWARFDebugInfo(const DWARFDebugInfo &)=delete
DWARFUnit * GetUnit(const DIERef &die_ref)
uint64_t dw_offset_t
Definition: dwarf.h:31