1 //===-- DWARFDebugRanges.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 SymbolFileDWARF_DWARFDebugRanges_h_
11 #define SymbolFileDWARF_DWARFDebugRanges_h_
12 
13 #include "DWARFDIE.h"
14 #include "SymbolFileDWARF.h"
15 
16 #include <map>
17 
18 class DWARFDebugRangesBase {
19 public:
~DWARFDebugRangesBase()20   virtual ~DWARFDebugRangesBase(){};
21 
22   virtual void Extract(SymbolFileDWARF *dwarf2Data) = 0;
23   virtual bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset,
24                           DWARFRangeList &range_list) const = 0;
25   virtual uint64_t GetOffset(size_t Index) const = 0;
26 };
27 
28 class DWARFDebugRanges final : public DWARFDebugRangesBase {
29 public:
30   DWARFDebugRanges();
31 
32   void Extract(SymbolFileDWARF *dwarf2Data) override;
33   bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset,
34                   DWARFRangeList &range_list) const override;
35   uint64_t GetOffset(size_t Index) const override;
36 
37   static void Dump(lldb_private::Stream &s,
38                    const lldb_private::DWARFDataExtractor &debug_ranges_data,
39                    lldb::offset_t *offset_ptr, dw_addr_t cu_base_addr);
40 
41 protected:
42   bool Extract(SymbolFileDWARF *dwarf2Data, lldb::offset_t *offset_ptr,
43                DWARFRangeList &range_list);
44 
45   typedef std::map<dw_offset_t, DWARFRangeList> range_map;
46   typedef range_map::iterator range_map_iterator;
47   typedef range_map::const_iterator range_map_const_iterator;
48   range_map m_range_map;
49 };
50 
51 // DWARF v5 .debug_rnglists section.
52 class DWARFDebugRngLists final : public DWARFDebugRangesBase {
53   struct RngListEntry {
54     uint8_t encoding;
55     uint64_t value0;
56     uint64_t value1;
57   };
58 
59 public:
60   void Extract(SymbolFileDWARF *dwarf2Data) override;
61   bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset,
62                   DWARFRangeList &range_list) const override;
63   uint64_t GetOffset(size_t Index) const override;
64 
65 protected:
66   bool ExtractRangeList(const lldb_private::DWARFDataExtractor &data,
67                         uint8_t addrSize, lldb::offset_t *offset_ptr,
68                         std::vector<RngListEntry> &list);
69 
70   std::vector<uint64_t> Offsets;
71   std::map<dw_offset_t, std::vector<RngListEntry>> m_range_map;
72 };
73 
74 #endif // SymbolFileDWARF_DWARFDebugRanges_h_
75