1 //===- MachO.h - MachO object file implementation ---------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file declares the MachOObjectFile class, which binds the MachOObject 11 // class to the generic ObjectFile wrapper. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_OBJECT_MACHO_H 16 #define LLVM_OBJECT_MACHO_H 17 18 #include "llvm/ADT/SmallVector.h" 19 #include "llvm/Object/MachOObject.h" 20 #include "llvm/Object/ObjectFile.h" 21 #include "llvm/Support/MachO.h" 22 #include "llvm/Support/raw_ostream.h" 23 24 namespace llvm { 25 namespace object { 26 27 typedef MachOObject::LoadCommandInfo LoadCommandInfo; 28 29 class MachOObjectFile : public ObjectFile { 30 public: 31 MachOObjectFile(MemoryBuffer *Object, MachOObject *MOO, error_code &ec); 32 33 virtual symbol_iterator begin_symbols() const; 34 virtual symbol_iterator end_symbols() const; 35 virtual symbol_iterator begin_dynamic_symbols() const; 36 virtual symbol_iterator end_dynamic_symbols() const; 37 virtual library_iterator begin_libraries_needed() const; 38 virtual library_iterator end_libraries_needed() const; 39 virtual section_iterator begin_sections() const; 40 virtual section_iterator end_sections() const; 41 42 virtual uint8_t getBytesInAddress() const; 43 virtual StringRef getFileFormatName() const; 44 virtual unsigned getArch() const; 45 virtual StringRef getLoadName() const; 46 47 // In a MachO file, sections have a segment name. This is used in the .o 48 // files. They have a single segment, but this field specifies which segment 49 // a section should be put in in the final object. 50 error_code getSectionFinalSegmentName(DataRefImpl Sec, StringRef &Res) const; 51 52 MachOObject *getObject() { return MachOObj.get(); } 53 54 static inline bool classof(const Binary *v) { 55 return v->isMachO(); 56 } 57 58 protected: 59 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const; 60 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const; 61 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const; 62 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const; 63 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const; 64 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const; 65 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const; 66 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const; 67 virtual error_code getSymbolSection(DataRefImpl Symb, 68 section_iterator &Res) const; 69 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const; 70 71 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const; 72 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const; 73 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const; 74 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const; 75 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const; 76 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const; 77 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const; 78 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const; 79 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const; 80 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec, 81 bool &Res) const; 82 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const; 83 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const; 84 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const; 85 virtual error_code sectionContainsSymbol(DataRefImpl DRI, DataRefImpl S, 86 bool &Result) const; 87 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; 88 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const; 89 90 virtual error_code getRelocationNext(DataRefImpl Rel, 91 RelocationRef &Res) const; 92 virtual error_code getRelocationAddress(DataRefImpl Rel, 93 uint64_t &Res) const; 94 virtual error_code getRelocationOffset(DataRefImpl Rel, 95 uint64_t &Res) const; 96 virtual error_code getRelocationSymbol(DataRefImpl Rel, 97 SymbolRef &Res) const; 98 virtual error_code getRelocationType(DataRefImpl Rel, 99 uint64_t &Res) const; 100 virtual error_code getRelocationTypeName(DataRefImpl Rel, 101 SmallVectorImpl<char> &Result) const; 102 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel, 103 int64_t &Res) const; 104 virtual error_code getRelocationValueString(DataRefImpl Rel, 105 SmallVectorImpl<char> &Result) const; 106 virtual error_code getRelocationHidden(DataRefImpl Rel, bool &Result) const; 107 108 virtual error_code getLibraryNext(DataRefImpl LibData, LibraryRef &Res) const; 109 virtual error_code getLibraryPath(DataRefImpl LibData, StringRef &Res) const; 110 111 private: 112 OwningPtr<MachOObject> MachOObj; 113 mutable uint32_t RegisteredStringTable; 114 typedef SmallVector<DataRefImpl, 1> SectionList; 115 SectionList Sections; 116 117 118 void moveToNextSection(DataRefImpl &DRI) const; 119 void getSymbolTableEntry(DataRefImpl DRI, 120 InMemoryStruct<macho::SymbolTableEntry> &Res) const; 121 void getSymbol64TableEntry(DataRefImpl DRI, 122 InMemoryStruct<macho::Symbol64TableEntry> &Res) const; 123 void moveToNextSymbol(DataRefImpl &DRI) const; 124 void getSection(DataRefImpl DRI, InMemoryStruct<macho::Section> &Res) const; 125 void getSection64(DataRefImpl DRI, 126 InMemoryStruct<macho::Section64> &Res) const; 127 void getRelocation(DataRefImpl Rel, 128 InMemoryStruct<macho::RelocationEntry> &Res) const; 129 std::size_t getSectionIndex(DataRefImpl Sec) const; 130 131 void printRelocationTargetName(InMemoryStruct<macho::RelocationEntry>& RE, 132 raw_string_ostream &fmt) const; 133 }; 134 135 } 136 } 137 138 #endif 139 140