1//===- ELFObjectReader.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_ELF_OBJECT_READER_H 10#define MCLD_ELF_OBJECT_READER_H 11 12#include <mcld/LD/ObjectReader.h> 13#include <mcld/ADT/Flags.h> 14 15namespace mcld { 16 17class Module; 18class Input; 19class IRBuilder; 20class GNULDBackend; 21class ELFReaderIF; 22class EhFrameReader; 23class LinkerConfig; 24 25/** \lclass ELFObjectReader 26 * \brief ELFObjectReader reads target-independent parts of ELF object file 27 */ 28class ELFObjectReader : public ObjectReader 29{ 30public: 31 enum ReadFlagType { 32 ParseEhFrame = 0x1, ///< parse .eh_frame section if the bit is set. 33 NumOfReadFlags = 1 34 }; 35 36 typedef Flags<ReadFlagType> ReadFlag; 37 38public: 39 ELFObjectReader(GNULDBackend& pBackend, 40 IRBuilder& pBuilder, 41 const LinkerConfig& pConfig); 42 43 ~ELFObjectReader(); 44 45 // ----- observers ----- // 46 bool isMyFormat(Input &pFile, bool &pContinue) const; 47 48 // ----- readers ----- // 49 bool readHeader(Input& pFile); 50 51 virtual bool readSections(Input& pFile); 52 53 virtual bool readSymbols(Input& pFile); 54 55 /// readRelocations - read relocation sections 56 /// 57 /// This function should be called after symbol resolution. 58 virtual bool readRelocations(Input& pFile); 59 60private: 61 ELFReaderIF* m_pELFReader; 62 EhFrameReader* m_pEhFrameReader; 63 IRBuilder& m_Builder; 64 ReadFlag m_ReadFlag; 65 GNULDBackend& m_Backend; 66 const LinkerConfig& m_Config; 67}; 68 69} // namespace of mcld 70 71#endif 72 73