1 //===- MCLinker.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 // 10 // MCLinker is a base class inherited by target specific linker. 11 // This class primarily handles common functionality used by all linkers. 12 // 13 //===----------------------------------------------------------------------===// 14 #ifndef MCLD_CODEGEN_MCLINKER_H 15 #define MCLD_CODEGEN_MCLINKER_H 16 #include <llvm/CodeGen/MachineFunctionPass.h> 17 18 namespace llvm { 19 20 class Module; 21 class MachineFunction; 22 23 } // namespace of llvm 24 25 namespace mcld { 26 27 class Module; 28 class IRBuilder; 29 class LinkerConfig; 30 class Linker; 31 class FileHandle; 32 33 /** \class MCLinker 34 * \brief MCLinker provides a linking pass for standard compilation flow 35 * 36 * MCLinker is responded for 37 * - provide an interface for target-specific linker 38 * - set up environment for ObjectLinker 39 * - perform linking 40 * 41 * @see MachineFunctionPass ObjectLinker 42 */ 43 class MCLinker : public llvm::MachineFunctionPass 44 { 45 protected: 46 // Constructor. Although MCLinker has only two arguments, 47 // TargetMCLinker should handle 48 // - enabled attributes 49 // - the default attribute 50 // - the default link script 51 // - the standard symbols 52 MCLinker(LinkerConfig& pConfig, 53 mcld::Module& pModule, 54 FileHandle& pFileHandle); 55 56 public: 57 virtual ~MCLinker(); 58 59 virtual bool doInitialization(llvm::Module &pM); 60 61 virtual bool doFinalization(llvm::Module &pM); 62 63 virtual bool runOnMachineFunction(llvm::MachineFunction& pMFn); 64 65 protected: 66 void initializeInputTree(IRBuilder& pBuilder); 67 68 protected: 69 LinkerConfig& m_Config; 70 mcld::Module& m_Module; 71 FileHandle& m_FileHandle; 72 IRBuilder* m_pBuilder; 73 Linker* m_pLinker; 74 75 private: 76 static char m_ID; 77 }; 78 79 } // namespace of MC Linker 80 81 #endif 82 83
