1 //===- BranchIslandFactory.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_LD_BRANCHISLANDFACTORY_H_ 10 #define MCLD_LD_BRANCHISLANDFACTORY_H_ 11 12 #include "mcld/LD/BranchIsland.h" 13 #include "mcld/Support/GCFactory.h" 14 15 #include <llvm/Support/DataTypes.h> 16 17 namespace mcld { 18 19 class Fragment; 20 class Module; 21 22 /** \class BranchIslandFactory 23 * \brief 24 * 25 */ 26 class BranchIslandFactory : public GCFactory<BranchIsland, 0> { 27 public: 28 /// ctor 29 /// @param pMaxFwdBranchRange - the max forward branch range of the target 30 /// @param pMaxBwdBranchRange - the max backward branch range of the target 31 /// @param pMaxIslandSize - the group size to place stubs between sections 32 BranchIslandFactory(int64_t pMaxFwdBranchRange, 33 int64_t pMaxBwdBranchRange, 34 size_t pMaxIslandSize); 35 36 ~BranchIslandFactory(); 37 38 /// group - group fragments and create islands when needed 39 /// @param pSectionData - the SectionData holds fragments need to be grouped 40 void group(Module& pModule); 41 42 /// produce - produce a island for the given fragment 43 /// @param pFragment - the fragment needs a branch island 44 BranchIsland* produce(Fragment& pFragment); 45 46 /// getIsland - find fwd and bwd islands for the fragment 47 /// @param pFragment - the fragment needs a branch island 48 /// @return - return the pair of <fwd island, bwd island> 49 std::pair<BranchIsland*, BranchIsland*> getIslands(const Fragment& pFragment); 50 51 private: 52 int64_t m_MaxFwdBranchRange; 53 int64_t m_MaxBwdBranchRange; 54 size_t m_MaxIslandSize; 55 }; 56 57 } // namespace mcld 58 59 #endif // MCLD_LD_BRANCHISLANDFACTORY_H_ 60