1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
new file mode 100644
index 000000000000..598739bf3cb9
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
@@ -0,0 +1,89 @@
+//===-- DWARFDebugInfo.h ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H
+#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H
+
+#include <map>
+#include <vector>
+
+#include "DWARFDIE.h"
+#include "DWARFTypeUnit.h"
+#include "DWARFUnit.h"
+#include "SymbolFileDWARF.h"
+#include "lldb/lldb-private.h"
+#include "llvm/Support/Error.h"
+
+namespace lldb_private::plugin {
+namespace dwarf {
+class DWARFContext;
+
+class DWARFDebugInfo {
+public:
+  typedef dw_offset_t (*Callback)(SymbolFileDWARF *dwarf2Data, DWARFUnit *cu,
+                                  DWARFDebugInfoEntry *die,
+                                  const dw_offset_t next_offset,
+                                  const uint32_t depth, void *userData);
+
+  explicit DWARFDebugInfo(SymbolFileDWARF &dwarf, DWARFContext &context);
+
+  size_t GetNumUnits();
+  DWARFUnit *GetUnitAtIndex(size_t idx);
+  DWARFUnit *GetUnitAtOffset(DIERef::Section section, dw_offset_t cu_offset,
+                             uint32_t *idx_ptr = nullptr);
+  DWARFUnit *GetUnitContainingDIEOffset(DIERef::Section section,
+                                        dw_offset_t die_offset);
+  DWARFUnit *GetSkeletonUnit(DWARFUnit *dwo_unit);
+  DWARFTypeUnit *GetTypeUnitForHash(uint64_t hash);
+  bool ContainsTypeUnits();
+  DWARFDIE GetDIE(DIERef::Section section, dw_offset_t die_offset);
+
+  enum {
+    eDumpFlag_Verbose = (1 << 0),  // Verbose dumping
+    eDumpFlag_ShowForm = (1 << 1), // Show the DW_form type
+    eDumpFlag_ShowAncestors =
+        (1 << 2) // Show all parent DIEs when dumping single DIEs
+  };
+
+  const DWARFDebugAranges &GetCompileUnitAranges();
+
+  const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile();
+
+protected:
+  typedef std::vector<DWARFUnitSP> UnitColl;
+
+  SymbolFileDWARF &m_dwarf;
+  DWARFContext &m_context;
+
+  llvm::once_flag m_units_once_flag;
+  UnitColl m_units;
+
+  std::unique_ptr<DWARFDebugAranges>
+      m_cu_aranges_up; // A quick address to compile unit table
+
+  std::vector<std::pair<uint64_t, uint32_t>> m_type_hash_to_unit_index;
+  llvm::DenseMap<uint64_t, DWARFUnit *> m_dwarf5_dwo_id_to_skeleton_unit;
+  llvm::DenseMap<uint64_t, DWARFUnit *> m_dwarf4_dwo_id_to_skeleton_unit;
+  llvm::once_flag m_dwarf4_dwo_id_to_skeleton_unit_once_flag;
+
+private:
+  // All parsing needs to be done partially any managed by this class as
+  // accessors are called.
+  void ParseUnitHeadersIfNeeded();
+
+  void ParseUnitsFor(DIERef::Section section);
+
+  uint32_t FindUnitIndex(DIERef::Section section, dw_offset_t offset);
+
+  DWARFDebugInfo(const DWARFDebugInfo &) = delete;
+  const DWARFDebugInfo &operator=(const DWARFDebugInfo &) = delete;
+};
+} // namespace dwarf
+} // namespace lldb_private::plugin
+
+#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFDEBUGINFO_H