1 //===- GNUArchiveReader.h -------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #ifndef MCLD_GNU_ARCHIVE_READER_H 10 #define MCLD_GNU_ARCHIVE_READER_H 11 #ifdef ENABLE_UNITTEST 12 #include <gtest.h> 13 #endif 14 15 #include "mcld/LD/ArchiveReader.h" 16 #include "mcld/Support/Path.h" 17 #include <llvm/ADT/OwningPtr.h> 18 19 #include <vector> 20 #include <string> 21 22 namespace llvm 23 { 24 class MemoryBuffer; 25 26 } 27 28 namespace mcld 29 { 30 class MCLDInfo; 31 class Input; 32 class InputTree; 33 34 /** \class GNUArchiveReader 35 * \brief GNUArchiveReader reads GNU archive files. 36 */ 37 class GNUArchiveReader : public ArchiveReader 38 { 39 private: 40 struct ArchiveMemberHeader; 41 struct SymbolTableEntry; 42 43 public: 44 explicit GNUArchiveReader(MCLDInfo &pLDInfo, LDReader::Endian endian) 45 : m_pLDInfo(pLDInfo), 46 m_endian(endian) 47 { } 48 49 ~GNUArchiveReader() 50 { } 51 52 /// Read an archive and extract each member in. 53 /// Construct the coresponding Input for each member. 54 InputTree *readArchive(Input &input); 55 56 bool isMyFormat(Input &input) const; 57 58 LDReader::Endian endian(Input& pFile) const; 59 60 private: 61 /// set up the archive, including 62 /// first, read symbol table 63 /// second, read extended file name which is used in thin archive 64 InputTree *setupNewArchive(Input &pInput, size_t off); 65 66 /// parse the archive header, and return the member size 67 size_t parseMemberHeader(llvm::OwningPtr<llvm::MemoryBuffer> &mapFile, 68 off_t off, 69 std::string *p_Name, 70 off_t *nestedOff, 71 std::string &p_ExtendedName); 72 73 void readSymbolTable(llvm::OwningPtr<llvm::MemoryBuffer> &mapFile, 74 std::vector<SymbolTableEntry> &pSymbolTable, 75 off_t start, 76 size_t size); 77 78 private: 79 MCLDInfo &m_pLDInfo; 80 LDReader::Endian m_endian; 81 }; 82 83 } // namespace of mcld 84 85 #endif 86
