MCInstPrinter.h revision 98c5ddabca1debf935a07d14d0cbc9732374bdb8
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 13namespace llvm { 14class MCInst; 15class raw_ostream; 16class MCAsmInfo; 17class StringRef; 18 19/// MCInstPrinter - This is an instance of a target assembly language printer 20/// that converts an MCInst to valid target assembly syntax. 21class MCInstPrinter { 22protected: 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); 34public: 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