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1//===-- DWARFDebugInfo.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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H10#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H11 12#include <map>13#include <vector>14 15#include "DWARFDIE.h"16#include "DWARFTypeUnit.h"17#include "DWARFUnit.h"18#include "SymbolFileDWARF.h"19#include "lldb/lldb-private.h"20#include "llvm/Support/Error.h"21 22namespace lldb_private::plugin {23namespace dwarf {24class DWARFContext;25 26class DWARFDebugInfo {27public:28 typedef dw_offset_t (*Callback)(SymbolFileDWARF *dwarf2Data, DWARFUnit *cu,29 DWARFDebugInfoEntry *die,30 const dw_offset_t next_offset,31 const uint32_t depth, void *userData);32 33 explicit DWARFDebugInfo(SymbolFileDWARF &dwarf, DWARFContext &context);34 35 size_t GetNumUnits();36 DWARFUnit *GetUnitAtIndex(size_t idx);37 DWARFUnit *GetUnitAtOffset(DIERef::Section section, dw_offset_t cu_offset,38 uint32_t *idx_ptr = nullptr);39 DWARFUnit *GetUnitContainingDIEOffset(DIERef::Section section,40 dw_offset_t die_offset);41 DWARFUnit *GetSkeletonUnit(DWARFUnit *dwo_unit);42 DWARFTypeUnit *GetTypeUnitForHash(uint64_t hash);43 bool ContainsTypeUnits();44 DWARFDIE GetDIE(DIERef::Section section, dw_offset_t die_offset);45 46 enum {47 eDumpFlag_Verbose = (1 << 0), // Verbose dumping48 eDumpFlag_ShowForm = (1 << 1), // Show the DW_form type49 eDumpFlag_ShowAncestors =50 (1 << 2) // Show all parent DIEs when dumping single DIEs51 };52 53 const DWARFDebugAranges &GetCompileUnitAranges();54 55 const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile();56 57protected:58 typedef std::vector<DWARFUnitSP> UnitColl;59 60 SymbolFileDWARF &m_dwarf;61 DWARFContext &m_context;62 63 llvm::once_flag m_units_once_flag;64 UnitColl m_units;65 66 std::unique_ptr<DWARFDebugAranges>67 m_cu_aranges_up; // A quick address to compile unit table68 69 std::vector<std::pair<uint64_t, uint32_t>> m_type_hash_to_unit_index;70 llvm::DenseMap<uint64_t, DWARFUnit *> m_dwarf5_dwo_id_to_skeleton_unit;71 llvm::DenseMap<uint64_t, DWARFUnit *> m_dwarf4_dwo_id_to_skeleton_unit;72 llvm::once_flag m_dwarf4_dwo_id_to_skeleton_unit_once_flag;73 74private:75 // All parsing needs to be done partially any managed by this class as76 // accessors are called.77 void ParseUnitHeadersIfNeeded();78 79 void ParseUnitsFor(DIERef::Section section);80 81 uint32_t FindUnitIndex(DIERef::Section section, dw_offset_t offset);82 83 DWARFDebugInfo(const DWARFDebugInfo &) = delete;84 const DWARFDebugInfo &operator=(const DWARFDebugInfo &) = delete;85};86} // namespace dwarf87} // namespace lldb_private::plugin88 89#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H90