1 //===-- llvm/MC/MCParsedAsmOperand.h - Asm Parser Operand -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H 11 #define LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H 12 13 namespace llvm { 14 class SMLoc; 15 class raw_ostream; 16 17 /// MCParsedAsmOperand - This abstract class represents a source-level assembly 18 /// instruction operand. It should be subclassed by target-specific code. This 19 /// base class is used by target-independent clients and is the interface 20 /// between parsing an asm instruction and recognizing it. 21 class MCParsedAsmOperand { 22 /// MCOperandNum - The corresponding MCInst operand number. Only valid when 23 /// parsing MS-style inline assembly. 24 unsigned MCOperandNum; 25 26 /// Constraint - The constraint on this operand. Only valid when parsing 27 /// MS-style inline assembly. 28 std::string Constraint; 29 30 public: 31 MCParsedAsmOperand() {} 32 virtual ~MCParsedAsmOperand() {} 33 34 void setConstraint(StringRef C) { Constraint = C.str(); } 35 StringRef getConstraint() { return Constraint; } 36 37 void setMCOperandNum (unsigned OpNum) { MCOperandNum = OpNum; } 38 unsigned getMCOperandNum() { return MCOperandNum; } 39 40 virtual StringRef getSymName() { return StringRef(); } 41 virtual void *getOpDecl() { return nullptr; } 42 43 /// isToken - Is this a token operand? 44 virtual bool isToken() const = 0; 45 /// isImm - Is this an immediate operand? 46 virtual bool isImm() const = 0; 47 /// isReg - Is this a register operand? 48 virtual bool isReg() const = 0; 49 virtual unsigned getReg() const = 0; 50 51 /// isMem - Is this a memory operand? 52 virtual bool isMem() const = 0; 53 54 /// getStartLoc - Get the location of the first token of this operand. 55 virtual SMLoc getStartLoc() const = 0; 56 /// getEndLoc - Get the location of the last token of this operand. 57 virtual SMLoc getEndLoc() const = 0; 58 59 /// needAddressOf - Do we need to emit code to get the address of the 60 /// variable/label? Only valid when parsing MS-style inline assembly. 61 virtual bool needAddressOf() const { return false; } 62 63 /// isOffsetOf - Do we need to emit code to get the offset of the variable, 64 /// rather then the value of the variable? Only valid when parsing MS-style 65 /// inline assembly. 66 virtual bool isOffsetOf() const { return false; } 67 68 /// getOffsetOfLoc - Get the location of the offset operator. 69 virtual SMLoc getOffsetOfLoc() const { return SMLoc(); } 70 71 /// print - Print a debug representation of the operand to the given stream. 72 virtual void print(raw_ostream &OS) const = 0; 73 /// dump - Print to the debug stream. 74 virtual void dump() const; 75 }; 76 77 //===----------------------------------------------------------------------===// 78 // Debugging Support 79 80 inline raw_ostream& operator<<(raw_ostream &OS, const MCParsedAsmOperand &MO) { 81 MO.print(OS); 82 return OS; 83 } 84 85 } // end namespace llvm. 86 87 #endif 88
