LLVM  7.0.0svn
DWARFDebugArangeSet.h
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1 //===- DWARFDebugArangeSet.h ------------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
11 #define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
12 
15 #include <cstdint>
16 #include <vector>
17 
18 namespace llvm {
19 
20 class raw_ostream;
21 
23 public:
24  struct Header {
25  /// The total length of the entries for that set, not including the length
26  /// field itself.
28  /// The offset from the beginning of the .debug_info section of the
29  /// compilation unit entry referenced by the table.
31  /// The DWARF version number.
32  uint16_t Version;
33  /// The size in bytes of an address on the target architecture. For segmented
34  /// addressing, this is the size of the offset portion of the address.
35  uint8_t AddrSize;
36  /// The size in bytes of a segment descriptor on the target architecture.
37  /// If the target system uses a flat address space, this value is 0.
38  uint8_t SegSize;
39  };
40 
41  struct Descriptor {
42  uint64_t Address;
43  uint64_t Length;
44 
45  uint64_t getEndAddress() const { return Address + Length; }
46  void dump(raw_ostream &OS, uint32_t AddressSize) const;
47  };
48 
49 private:
50  using DescriptorColl = std::vector<Descriptor>;
52 
53  uint32_t Offset;
54  Header HeaderData;
55  DescriptorColl ArangeDescriptors;
56 
57 public:
59 
60  void clear();
61  bool extract(DataExtractor data, uint32_t *offset_ptr);
62  void dump(raw_ostream &OS) const;
63 
64  uint32_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; }
65 
66  const Header &getHeader() const { return HeaderData; }
67 
69  return desc_iterator_range(ArangeDescriptors.begin(),
70  ArangeDescriptors.end());
71  }
72 };
73 
74 } // end namespace llvm
75 
76 #endif // LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
desc_iterator_range descriptors() const
This provides a very simple, boring adaptor for a begin and end iterator into a range type...
uint8_t SegSize
The size in bytes of a segment descriptor on the target architecture.
uint32_t CuOffset
The offset from the beginning of the .debug_info section of the compilation unit entry referenced by ...
void dump(raw_ostream &OS) const
uint16_t Version
The DWARF version number.
uint32_t Length
The total length of the entries for that set, not including the length field itself.
bool extract(DataExtractor data, uint32_t *offset_ptr)
const Header & getHeader() const
uint8_t AddrSize
The size in bytes of an address on the target architecture.
A range adaptor for a pair of iterators.
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:44
uint32_t getCompileUnitDIEOffset() const