1 //===- Linker.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_LINKER_H 10 #define MCLD_LINKER_H 11 12 #include <string> 13 14 namespace mcld { 15 16 class Module; 17 class LinkerConfig; 18 class LinkerScript; 19 20 class Target; 21 class TargetLDBackend; 22 23 class IRBuilder; 24 class ObjectLinker; 25 26 class FileHandle; 27 class FileOutputBuffer; 28 29 /** \class Linker 30 * \brief Linker is a modular linker. 31 */ 32 class Linker 33 { 34 public: 35 Linker(); 36 37 ~Linker(); 38 39 /// emulate - To set up target-dependent options and default linker script. 40 bool emulate(LinkerScript& pScript, LinkerConfig& pConfig); 41 42 /// normalize - To normalize the command line language into mcld::Module. 43 bool normalize(Module& pModule, IRBuilder& pBuilder); 44 45 /// resolve - To build up the topology of mcld::Module. 46 bool resolve(Module& pModule); 47 48 /// layout - To serialize the final result of the output mcld::Module. 49 bool layout(); 50 51 /// link - A convenient way to resolve and to layout the output mcld::Module. 52 bool link(Module& pModule, IRBuilder& pBuilder); 53 54 /// emit - To emit output mcld::Module to a FileOutputBuffer. 55 bool emit(FileOutputBuffer& pOutput); 56 57 /// emit - To open a file for output in pPath and to emit output mcld::Module 58 /// to the file. 59 bool emit(const Module& pModule, const std::string& pPath); 60 61 /// emit - To emit output mcld::Module in the pFileDescriptor. 62 bool emit(const Module& pModule, int pFileDescriptor); 63 64 bool reset(); 65 66 private: 67 bool initTarget(); 68 69 bool initBackend(); 70 71 bool initOStream(); 72 73 bool initEmulator(LinkerScript& pScript); 74 75 private: 76 LinkerConfig* m_pConfig; 77 IRBuilder* m_pIRBuilder; 78 79 const Target* m_pTarget; 80 TargetLDBackend* m_pBackend; 81 ObjectLinker* m_pObjLinker; 82 }; 83 84 } // namespace of MC Linker 85 86 #endif 87 88
