1 //===- Operand.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_SCRIPT_OPERAND_H_ 10 #define MCLD_SCRIPT_OPERAND_H_ 11 12 #include "mcld/Config/Config.h" 13 #include "mcld/Object/SectionMap.h" 14 #include "mcld/Script/ExprToken.h" 15 #include "mcld/Support/Allocators.h" 16 17 #include <llvm/Support/DataTypes.h> 18 19 #include <string> 20 21 #include <cassert> 22 23 namespace mcld { 24 25 /** \class Operand 26 * \brief This class defines the interfaces to an operand token. 27 */ 28 29 class Operand : public ExprToken { 30 public: 31 enum Type { SYMBOL, INTEGER, SECTION, SECTION_DESC, FRAGMENT }; 32 33 protected: 34 explicit Operand(Type pType); 35 virtual ~Operand(); 36 37 public: 38 Type type() const { return m_Type; } 39 40 virtual bool isDot() const { return false; } 41 42 virtual uint64_t value() const = 0; 43 44 static bool classof(const ExprToken* pToken) { 45 return pToken->kind() == ExprToken::OPERAND; 46 } 47 48 private: 49 Type m_Type; 50 }; 51 52 /** \class SymOperand 53 * \brief This class defines the interfaces to a symbol operand. 54 */ 55 56 class SymOperand : public Operand { 57 private: 58 friend class Chunk<SymOperand, MCLD_SYMBOLS_PER_INPUT>; 59 SymOperand(); 60 explicit SymOperand(const std::string& pName); 61 62 public: 63 void dump() const; 64 65 const std::string& name() const { return m_Name; } 66 67 bool isDot() const; 68 69 uint64_t value() const { return m_Value; } 70 71 void setValue(uint64_t pValue) { m_Value = pValue; } 72 73 static bool classof(const Operand* pOperand) { 74 return pOperand->type() == Operand::SYMBOL; 75 } 76 77 /* factory method */ 78 static SymOperand* create(const std::string& pName); 79 static void destroy(SymOperand*& pOperand); 80 static void clear(); 81 82 private: 83 std::string m_Name; 84 uint64_t m_Value; 85 }; 86 87 /** \class IntOperand 88 * \brief This class defines the interfaces to an integer operand. 89 */ 90 91 class IntOperand : public Operand { 92 private: 93 friend class Chunk<IntOperand, MCLD_SYMBOLS_PER_INPUT>; 94 IntOperand(); 95 explicit IntOperand(uint64_t pValue); 96 97 public: 98 void dump() const; 99 100 uint64_t value() const { return m_Value; } 101 102 void setValue(uint64_t pValue) { m_Value = pValue; } 103 104 static bool classof(const Operand* pOperand) { 105 return pOperand->type() == Operand::INTEGER; 106 } 107 108 /* factory method */ 109 static IntOperand* create(uint64_t pValue); 110 static void destroy(IntOperand*& pOperand); 111 static void clear(); 112 113 private: 114 uint64_t m_Value; 115 }; 116 117 /** \class SectOperand 118 * \brief This class defines the interfaces to an section name operand. 119 */ 120 class LDSection; 121 122 class SectOperand : public Operand { 123 private: 124 friend class Chunk<SectOperand, MCLD_SECTIONS_PER_INPUT>; 125 SectOperand(); 126 explicit SectOperand(const std::string& pName); 127 128 public: 129 void dump() const; 130 131 const std::string& name() const { return m_Name; } 132 133 uint64_t value() const { 134 assert(0); 135 return 0; 136 } 137 138 static bool classof(const Operand* pOperand) { 139 return pOperand->type() == Operand::SECTION; 140 } 141 142 /* factory method */ 143 static SectOperand* create(const std::string& pName); 144 static void destroy(SectOperand*& pOperand); 145 static void clear(); 146 147 private: 148 std::string m_Name; 149 }; 150 151 /** \class SectDescOperand 152 * \brief This class defines the interfaces to an section name operand. 153 */ 154 155 class SectDescOperand : public Operand { 156 private: 157 friend class Chunk<SectDescOperand, MCLD_SECTIONS_PER_INPUT>; 158 SectDescOperand(); 159 explicit SectDescOperand(const SectionMap::Output* pOutputDesc); 160 161 public: 162 void dump() const; 163 164 const SectionMap::Output* outputDesc() const { return m_pOutputDesc; } 165 166 uint64_t value() const { 167 assert(0); 168 return 0; 169 } 170 171 static bool classof(const Operand* pOperand) { 172 return pOperand->type() == Operand::SECTION_DESC; 173 } 174 175 /* factory method */ 176 static SectDescOperand* create(const SectionMap::Output* pOutputDesc); 177 static void destroy(SectDescOperand*& pOperand); 178 static void clear(); 179 180 private: 181 const SectionMap::Output* m_pOutputDesc; 182 }; 183 184 /** \class FragOperand 185 * \brief This class defines the interfaces to a fragment operand. 186 */ 187 188 class Fragment; 189 190 class FragOperand : public Operand { 191 private: 192 friend class Chunk<FragOperand, MCLD_SYMBOLS_PER_INPUT>; 193 FragOperand(); 194 explicit FragOperand(Fragment& pFragment); 195 196 public: 197 void dump() const; 198 199 const Fragment* frag() const { return m_pFragment; } 200 Fragment* frag() { return m_pFragment; } 201 202 uint64_t value() const; 203 204 static bool classof(const Operand* pOperand) { 205 return pOperand->type() == Operand::FRAGMENT; 206 } 207 208 /* factory method */ 209 static FragOperand* create(Fragment& pFragment); 210 static void destroy(FragOperand*& pOperand); 211 static void clear(); 212 213 private: 214 Fragment* m_pFragment; 215 }; 216 217 } // namespace mcld 218 219 #endif // MCLD_SCRIPT_OPERAND_H_ 220
