1 //===-- MCInstPrinter.h - Convert an MCInst to target assembly syntax -----===// 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_MCINSTPRINTER_H 11 #define LLVM_MC_MCINSTPRINTER_H 12 13 namespace llvm { 14 class MCInst; 15 class raw_ostream; 16 class MCAsmInfo; 17 class StringRef; 18 19 /// MCInstPrinter - This is an instance of a target assembly language printer 20 /// that converts an MCInst to valid target assembly syntax. 21 class MCInstPrinter { 22 protected: 23 /// CommentStream - a stream that comments can be emitted to if desired. 24 /// Each comment must end with a newline. This will be null if verbose 25 /// assembly emission is disable. 26 raw_ostream *CommentStream; 27 const MCAsmInfo &MAI; 28 29 /// The current set of available features. 30 unsigned AvailableFeatures; 31 32 /// Utility function for printing annotations. 33 void printAnnotation(raw_ostream &OS, StringRef Annot); 34 public: 35 MCInstPrinter(const MCAsmInfo &mai) 36 : CommentStream(0), MAI(mai), AvailableFeatures(0) {} 37 38 virtual ~MCInstPrinter(); 39 40 /// setCommentStream - Specify a stream to emit comments to. 41 void setCommentStream(raw_ostream &OS) { CommentStream = &OS; } 42 43 /// printInst - Print the specified MCInst to the specified raw_ostream. 44 /// 45 virtual void printInst(const MCInst *MI, raw_ostream &OS, 46 StringRef Annot) = 0; 47 48 /// getOpcodeName - Return the name of the specified opcode enum (e.g. 49 /// "MOV32ri") or empty if we can't resolve it. 50 virtual StringRef getOpcodeName(unsigned Opcode) const; 51 52 /// printRegName - Print the assembler register name. 53 virtual void printRegName(raw_ostream &OS, unsigned RegNo) const; 54 55 unsigned getAvailableFeatures() const { return AvailableFeatures; } 56 void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; } 57 }; 58 59 } // namespace llvm 60 61 #endif 62
