--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lld/MachO/Dwarf.h	Tue Jun 08 06:07:14 2021 +0900
@@ -0,0 +1,53 @@
+//===- DWARF.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 LLD_MACHO_DWARF_H
+#define LLD_MACHO_DWARF_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/DWARF/DWARFObject.h"
+
+namespace lld {
+namespace macho {
+
+class ObjFile;
+
+// Implements the interface between LLVM's DWARF-parsing utilities and LLD's
+// InputSection structures.
+class DwarfObject final : public llvm::DWARFObject {
+public:
+  bool isLittleEndian() const override { return true; }
+
+  llvm::Optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec,
+                                            uint64_t pos) const override {
+    // TODO: implement this
+    return llvm::None;
+  }
+
+  void forEachInfoSections(
+      llvm::function_ref<void(const llvm::DWARFSection &)> f) const override {
+    f(infoSection);
+  }
+
+  llvm::StringRef getAbbrevSection() const override { return abbrevSection; }
+  llvm::StringRef getStrSection() const override { return strSection; }
+
+  // Returns an instance of DwarfObject if the given object file has the
+  // relevant DWARF debug sections.
+  static std::unique_ptr<DwarfObject> create(ObjFile *);
+
+private:
+  llvm::DWARFSection infoSection;
+  llvm::StringRef abbrevSection;
+  llvm::StringRef strSection;
+};
+
+} // namespace macho
+} // namespace lld
+
+#endif