1 //===- SectionMap.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_SECTION_MAP_H 10 #define MCLD_SECTION_MAP_H 11 #ifdef ENABLE_UNITTEST 12 #include <gtest.h> 13 #endif 14 15 #include <llvm/Support/DataTypes.h> 16 #include <vector> 17 #include <string> 18 19 namespace mcld 20 { 21 22 /** \class SectionMap 23 * \brief descirbe the mappings of input section's name (or prefix) to 24 * its associated output section's name and offset 25 */ 26 class SectionMap 27 { 28 public: 29 // a mapping in SectionMap is the triple of 30 // {input substr, output section's name, output section's offset} 31 struct Mapping { 32 std::string inputSubStr; 33 std::string outputStr; 34 uint64_t offset; 35 }; 36 37 typedef std::vector<struct Mapping> SectionMappingTy; 38 39 typedef SectionMappingTy::iterator iterator; 40 typedef SectionMappingTy::const_iterator const_iterator; 41 42 public: 43 SectionMap(); 44 ~SectionMap(); 45 46 // get the possible output section name based on the mapping table 47 // return NULL if not found 48 const std::string& getOutputSectName(const std::string& pInput); 49 50 // add a mapping from input substr to output name and offset. 51 bool push_back(const std::string& pInput, 52 const std::string& pOutput, 53 const uint64_t pOffset = 0); 54 55 // find - return the iterator to the mapping 56 iterator find(const std::string& pInput); 57 58 // at - return the pointer to the mapping 59 Mapping* at(const std::string& pInput); 60 61 // ----- observers ----- // empty()62 bool empty() const 63 { return m_SectMap.empty(); } 64 size()65 size_t size() const 66 { return m_SectMap.size(); } 67 capacity()68 size_t capacity () const 69 { return m_SectMap.capacity(); } 70 71 // ----- iterators ----- // begin()72 iterator begin() 73 { return m_SectMap.begin(); } 74 end()75 iterator end() 76 { return m_SectMap.end(); } 77 begin()78 const_iterator begin() const 79 { return m_SectMap.begin(); } 80 end()81 const_iterator end() const 82 { return m_SectMap.end(); } 83 84 // initStdSectionMap - add common mappings of ELF and other formats 85 // to SectionMap 86 bool initStdSectionMap(); 87 88 private: 89 struct SectionNameMapping { 90 const char* from; 91 const char* to; 92 }; 93 94 // used to store common mappings of ELF and other formants 95 static const SectionNameMapping m_StdSectionMap[]; 96 97 static const int m_StdSectionMapSize; 98 99 SectionMappingTy m_SectMap; 100 }; 101 102 } // namespace of mcld 103 104 #endif 105