DWARFGdbIndex.h revision 353358 
1//===- DWARFGdbIndex.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 LLVM_DEBUGINFO_DWARF_DWARFGDBINDEX_H
10#define LLVM_DEBUGINFO_DWARF_DWARFGDBINDEX_H
11
12#include "llvm/ADT/SmallVector.h"
13#include "llvm/ADT/StringRef.h"
14#include "llvm/Support/DataExtractor.h"
15#include <cstdint>
16#include <utility>
17
18namespace llvm {
19
20class raw_ostream;
21
22class DWARFGdbIndex {
23  uint32_t Version;
24
25  uint32_t CuListOffset;
26  uint32_t TuListOffset;
27  uint32_t AddressAreaOffset;
28  uint32_t SymbolTableOffset;
29  uint32_t ConstantPoolOffset;
30
31  struct CompUnitEntry {
32    uint64_t Offset; /// Offset of a CU in the .debug_info section.
33    uint64_t Length; /// Length of that CU.
34  };
35  SmallVector<CompUnitEntry, 0> CuList;
36
37  struct TypeUnitEntry {
38    uint64_t Offset;
39    uint64_t TypeOffset;
40    uint64_t TypeSignature;
41  };
42  SmallVector<TypeUnitEntry, 0> TuList;
43
44  struct AddressEntry {
45    uint64_t LowAddress;  /// The low address.
46    uint64_t HighAddress; /// The high address.
47    uint32_t CuIndex;     /// The CU index.
48  };
49  SmallVector<AddressEntry, 0> AddressArea;
50
51  struct SymTableEntry {
52    uint32_t NameOffset; /// Offset of the symbol's name in the constant pool.
53    uint32_t VecOffset;  /// Offset of the CU vector in the constant pool.
54  };
55  SmallVector<SymTableEntry, 0> SymbolTable;
56
57  /// Each value is CU index + attributes.
58  SmallVector<std::pair<uint32_t, SmallVector<uint32_t, 0>>, 0>
59      ConstantPoolVectors;
60
61  StringRef ConstantPoolStrings;
62  uint32_t StringPoolOffset;
63
64  void dumpCUList(raw_ostream &OS) const;
65  void dumpTUList(raw_ostream &OS) const;
66  void dumpAddressArea(raw_ostream &OS) const;
67  void dumpSymbolTable(raw_ostream &OS) const;
68  void dumpConstantPool(raw_ostream &OS) const;
69
70  bool parseImpl(DataExtractor Data);
71
72public:
73  void dump(raw_ostream &OS);
74  void parse(DataExtractor Data);
75
76  bool HasContent = false;
77  bool HasError = false;
78};
79
80} // end namespace llvm
81
82#endif // LLVM_DEBUGINFO_DWARF_DWARFGDBINDEX_H
83