lld/MachO/Dwarf.h

   1 //===- DWARF.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-exception
   6 //
   7 //===-------------------------------------------------------------------===//
   8
   9 #ifndef LLD_MACHO_DWARF_H
  10 #define LLD_MACHO_DWARF_H
  11
  12 #include "llvm/ADT/StringRef.h"
  13 #include "llvm/DebugInfo/DWARF/DWARFObject.h"
  14
  15 namespace lld {
  16 namespace macho {
  17
  18 class ObjFile;
  19
  20 // Implements the interface between LLVM's DWARF-parsing utilities and LLD's
  21 // InputSection structures.
  22 class DwarfObject final : public llvm::DWARFObject {
  23 public:
  24   bool isLittleEndian() const override { return true; }
  25
  26   llvm::Optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec,
  27                                             uint64_t pos) const override {
  28     // TODO: implement this
  29     return llvm::None;
  30   }
  31
  32   void forEachInfoSections(
  33       llvm::function_ref<void(const llvm::DWARFSection &)> f) const override {
  34     f(infoSection);
  35   }
  36
  37   llvm::StringRef getAbbrevSection() const override { return abbrevSection; }
  38   llvm::StringRef getStrSection() const override { return strSection; }
  39
  40   // Returns an instance of DwarfObject if the given object file has the
  41   // relevant DWARF debug sections.
  42   static std::unique_ptr<DwarfObject> create(ObjFile *);
  43
  44 private:
  45   llvm::DWARFSection infoSection;
  46   llvm::StringRef abbrevSection;
  47   llvm::StringRef strSection;
  48 };
  49
  50 } // namespace macho
  51 } // namespace lld
  52
  53 #endif