include/llvm/Object/COFF.h

   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
  88   const coff_symbol      *toSymb(DataRefImpl Symb) const;
  89   const coff_section     *toSec(DataRefImpl Sec) const;
  90   const coff_relocation  *toRel(DataRefImpl Rel) const;
  91
  92 protected:
  93   virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
  94   virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
  95   virtual error_code getSymbolOffset(DataRefImpl Symb, uint64_t &Res) const;
  96   virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
  97   virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
  98   virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
  99   virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const;
 100   virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const;
 101   virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::SymbolType &Res) const;
 102
 103   virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
 104   virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
 105   virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
 106   virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
 107   virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
 108   virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
 109   virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
 110                                            bool &Result) const;
 111
 112   virtual error_code getRelocationNext(DataRefImpl Rel,
 113                                        RelocationRef &Res) const;
 114   virtual error_code getRelocationAddress(DataRefImpl Rel,
 115                                           uint64_t &Res) const;
 116   virtual error_code getRelocationSymbol(DataRefImpl Rel,
 117                                          SymbolRef &Res) const;
 118   virtual error_code getRelocationType(DataRefImpl Rel,
 119                                        uint32_t &Res) const;
 120   virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
 121                                                  int64_t &Res) const;
 122 public:
 123   COFFObjectFile(MemoryBuffer *Object, error_code &ec);
 124   virtual symbol_iterator begin_symbols() const;
 125   virtual symbol_iterator end_symbols() const;
 126   virtual section_iterator begin_sections() const;
 127   virtual section_iterator end_sections() const;
 128   virtual relocation_iterator begin_relocations() const;
 129   virtual relocation_iterator end_relocations() const;
 130
 131   virtual uint8_t getBytesInAddress() const;
 132   virtual StringRef getFileFormatName() const;
 133   virtual unsigned getArch() const;
 134 };
 135
 136 }
 137 }
 138
 139 #endif