1 //===- COFF.h - COFF 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 COFFObjectFile class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_OBJECT_COFF_H 15 #define LLVM_OBJECT_COFF_H 16 17 #include "llvm/Object/ObjectFile.h" 18 #include "llvm/Support/COFF.h" 19 #include "llvm/Support/Endian.h" 20 21 namespace llvm { 22 namespace object { 23 24 struct coff_file_header { 25 support::ulittle16_t Machine; 26 support::ulittle16_t NumberOfSections; 27 support::ulittle32_t TimeDateStamp; 28 support::ulittle32_t PointerToSymbolTable; 29 support::ulittle32_t NumberOfSymbols; 30 support::ulittle16_t SizeOfOptionalHeader; 31 support::ulittle16_t Characteristics; 32 }; 33 34 struct coff_symbol { 35 struct StringTableOffset { 36 support::ulittle32_t Zeroes; 37 support::ulittle32_t Offset; 38 }; 39 40 union { 41 char ShortName[8]; 42 StringTableOffset Offset; 43 } Name; 44 45 support::ulittle32_t Value; 46 support::little16_t SectionNumber; 47 48 struct { 49 support::ulittle8_t BaseType; 50 support::ulittle8_t ComplexType; 51 } Type; 52 53 support::ulittle8_t StorageClass; 54 support::ulittle8_t NumberOfAuxSymbols; 55 }; 56 57 struct coff_section { 58 char Name[8]; 59 support::ulittle32_t VirtualSize; 60 support::ulittle32_t VirtualAddress; 61 support::ulittle32_t SizeOfRawData; 62 support::ulittle32_t PointerToRawData; 63 support::ulittle32_t PointerToRelocations; 64 support::ulittle32_t PointerToLinenumbers; 65 support::ulittle16_t NumberOfRelocations; 66 support::ulittle16_t NumberOfLinenumbers; 67 support::ulittle32_t Characteristics; 68 }; 69 70 struct coff_relocation { 71 support::ulittle32_t VirtualAddress; 72 support::ulittle32_t SymbolTableIndex; 73 support::ulittle16_t Type; 74 }; 75 76 class COFFObjectFile : public ObjectFile { 77 private: 78 const coff_file_header *Header; 79 const coff_section *SectionTable; 80 const coff_symbol *SymbolTable; 81 const char *StringTable; 82 uint32_t StringTableSize; 83 84 error_code getSection(int32_t index, 85 const coff_section *&Res) const; 86 error_code getString(uint32_t offset, StringRef &Res) const; 87 error_code getSymbol(uint32_t index, 88 const coff_symbol *&Res) const; 89 90 const coff_symbol *toSymb(DataRefImpl Symb) const; 91 const coff_section *toSec(DataRefImpl Sec) const; 92 const coff_relocation *toRel(DataRefImpl Rel) const; 93 94 protected: 95 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const; 96 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const; 97 virtual error_code getSymbolOffset(DataRefImpl Symb, uint64_t &Res) const; 98 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const; 99 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const; 100 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const; 101 virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const; 102 virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const; 103 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::SymbolType &Res) const; 104 105 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const; 106 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const; 107 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const; 108 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const; 109 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const; 110 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const; 111 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const; 112 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const; 113 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const; 114 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, 115 bool &Result) const; 116 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; 117 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const; 118 119 virtual error_code getRelocationNext(DataRefImpl Rel, 120 RelocationRef &Res) const; 121 virtual error_code getRelocationAddress(DataRefImpl Rel, 122 uint64_t &Res) const; 123 virtual error_code getRelocationSymbol(DataRefImpl Rel, 124 SymbolRef &Res) const; 125 virtual error_code getRelocationType(DataRefImpl Rel, 126 uint32_t &Res) const; 127 virtual error_code getRelocationTypeName(DataRefImpl Rel, 128 SmallVectorImpl<char> &Result) const; 129 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel, 130 int64_t &Res) const; 131 virtual error_code getRelocationValueString(DataRefImpl Rel, 132 SmallVectorImpl<char> &Result) const; 133 134 public: 135 COFFObjectFile(MemoryBuffer *Object, error_code &ec); 136 virtual symbol_iterator begin_symbols() const; 137 virtual symbol_iterator end_symbols() const; 138 virtual section_iterator begin_sections() const; 139 virtual section_iterator end_sections() const; 140 141 virtual uint8_t getBytesInAddress() const; 142 virtual StringRef getFileFormatName() const; 143 virtual unsigned getArch() const; 144 }; 145 146 } 147 } 148 149 #endif 150
