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:
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 };
26 
27 class DWARFDebugRanges final : public DWARFDebugRangesBase {
28 public:
29   DWARFDebugRanges();
30 
31   virtual void Extract(SymbolFileDWARF *dwarf2Data) override;
32   virtual bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset,
33                           DWARFRangeList &range_list) const override;
34 
35   static void Dump(lldb_private::Stream &s,
36                    const lldb_private::DWARFDataExtractor &debug_ranges_data,
37                    lldb::offset_t *offset_ptr, dw_addr_t cu_base_addr);
38 
39 protected:
40   bool Extract(SymbolFileDWARF *dwarf2Data, lldb::offset_t *offset_ptr,
41                DWARFRangeList &range_list);
42 
43   typedef std::map<dw_offset_t, DWARFRangeList> range_map;
44   typedef range_map::iterator range_map_iterator;
45   typedef range_map::const_iterator range_map_const_iterator;
46   range_map m_range_map;
47 };
48 
49 // DWARF v5 .debug_rnglists section.
50 class DWARFDebugRngLists final : public DWARFDebugRangesBase {
51   struct RngListEntry {
52     uint8_t encoding;
53     uint64_t value0;
54     uint64_t value1;
55   };
56 
57 public:
58   void Extract(SymbolFileDWARF *dwarf2Data) override;
59   bool FindRanges(const DWARFUnit *cu, dw_offset_t debug_ranges_offset,
60                   DWARFRangeList &range_list) const override;
61 
62 protected:
63   bool ExtractRangeList(const lldb_private::DWARFDataExtractor &data,
64                         uint8_t addrSize, lldb::offset_t *offset_ptr,
65                         std::vector<RngListEntry> &list);
66 
67   std::vector<uint64_t> Offsets;
68   std::map<dw_offset_t, std::vector<RngListEntry>> m_range_map;
69 };
70 
71 #endif // SymbolFileDWARF_DWARFDebugRanges_h_
72