contrib/llvm/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.h

   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   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_