llvm/lib/ObjCopy/MachO/MachOReader.h

   1 //===- MachOReader.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 LLVM_LIB_OBJCOPY_MACHO_MACHOREADER_H
  10 #define LLVM_LIB_OBJCOPY_MACHO_MACHOREADER_H
  11
  12 #include "MachOObject.h"
  13 #include "llvm/BinaryFormat/MachO.h"
  14 #include "llvm/ObjCopy/MachO/MachOObjcopy.h"
  15 #include "llvm/Object/MachO.h"
  16 #include <memory>
  17
  18 namespace llvm {
  19 namespace objcopy {
  20 namespace macho {
  21
  22 // The hierarchy of readers is responsible for parsing different inputs:
  23 // raw binaries and regular MachO object files.
  24 class Reader {
  25 public:
  26   virtual ~Reader(){};
  27   virtual Expected<std::unique_ptr<Object>> create() const = 0;
  28 };
  29
  30 class MachOReader : public Reader {
  31   const object::MachOObjectFile &MachOObj;
  32
  33   void readHeader(Object &O) const;
  34   Error readLoadCommands(Object &O) const;
  35   void readSymbolTable(Object &O) const;
  36   void setSymbolInRelocationInfo(Object &O) const;
  37   void readRebaseInfo(Object &O) const;
  38   void readBindInfo(Object &O) const;
  39   void readWeakBindInfo(Object &O) const;
  40   void readLazyBindInfo(Object &O) const;
  41   void readExportInfo(Object &O) const;
  42   void readLinkData(Object &O, std::optional<size_t> LCIndex,
  43                     LinkData &LD) const;
  44   void readCodeSignature(Object &O) const;
  45   void readDataInCodeData(Object &O) const;
  46   void readLinkerOptimizationHint(Object &O) const;
  47   void readFunctionStartsData(Object &O) const;
  48   void readDylibCodeSignDRs(Object &O) const;
  49   void readExportsTrie(Object &O) const;
  50   void readChainedFixups(Object &O) const;
  51   void readIndirectSymbolTable(Object &O) const;
  52   void readSwiftVersion(Object &O) const;
  53
  54 public:
  55   explicit MachOReader(const object::MachOObjectFile &Obj) : MachOObj(Obj) {}
  56
  57   Expected<std::unique_ptr<Object>> create() const override;
  58 };
  59
  60 } // end namespace macho
  61 } // end namespace objcopy
  62 } // end namespace llvm
  63
  64 #endif // LLVM_LIB_OBJCOPY_MACHO_MACHOREADER_H