1 //===- Fragment.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_FRAGMENT_FRAGMENT_H 10 #define MCLD_FRAGMENT_FRAGMENT_H 11 #ifdef ENABLE_UNITTEST 12 #include <gtest.h> 13 #endif 14 15 #include <llvm/ADT/ilist_node.h> 16 17 #include <llvm/Support/DataTypes.h> 18 19 #include <cstddef> 20 #include <cassert> 21 22 namespace mcld { 23 24 class SectionData; 25 26 /** \class Fragment 27 * \brief Fragment is the minimun linking unit of MCLinker. 28 */ 29 class Fragment : public llvm::ilist_node<Fragment> 30 { 31 public: 32 enum Type { 33 Alignment, 34 Fillment, 35 Region, 36 Target, 37 Stub, 38 Null 39 }; 40 41 public: 42 Fragment(); 43 44 Fragment(Type pKind, SectionData *pParent = NULL); 45 46 virtual ~Fragment(); 47 getKind()48 Type getKind() const { return m_Kind; } 49 getParent()50 const SectionData* getParent() const { return m_pParent; } getParent()51 SectionData* getParent() { return m_pParent; } 52 setParent(SectionData * pValue)53 void setParent(SectionData *pValue) { m_pParent = pValue; } 54 55 uint64_t getOffset() const; 56 setOffset(uint64_t pOffset)57 void setOffset(uint64_t pOffset) { m_Offset = pOffset; } 58 59 bool hasOffset() const; 60 classof(const Fragment * O)61 static bool classof(const Fragment *O) { return true; } 62 size()63 virtual size_t size() const { 64 assert(false && "Can not call abstract Fragment::size()!"); 65 return 0; 66 } 67 68 private: 69 Fragment(const Fragment& ); // DO NOT IMPLEMENT 70 Fragment& operator=(const Fragment& ); // DO NOT IMPLEMENT 71 72 private: 73 Type m_Kind; 74 SectionData* m_pParent; 75 76 uint64_t m_Offset; 77 78 }; 79 80 } // namespace of mcld 81 82 #endif 83 84