src/llvm/include/llvm/MC/MCInstPrinter.h

   1 //===- MCInstPrinter.h - MCInst to target assembly syntax -------*- 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_MCINSTPRINTER_H
  11 #define LLVM_MC_MCINSTPRINTER_H
  12
  13 #include "llvm/Support/DataTypes.h"
  14 #include "llvm/Support/Format.h"
  15
  16 namespace llvm {
  17 class MCInst;
  18 class raw_ostream;
  19 class MCAsmInfo;
  20 class MCInstrInfo;
  21 class MCRegisterInfo;
  22 class StringRef;
  23
  24 namespace HexStyle {
  25     enum Style {
  26         C,          ///< 0xff
  27         Asm         ///< 0ffh
  28     };
  29 }
  30
  31 /// MCInstPrinter - This is an instance of a target assembly language printer
  32 /// that converts an MCInst to valid target assembly syntax.
  33 class MCInstPrinter {
  34 protected:
  35   /// CommentStream - a stream that comments can be emitted to if desired.
  36   /// Each comment must end with a newline.  This will be null if verbose
  37   /// assembly emission is disable.
  38   raw_ostream *CommentStream;
  39   const MCAsmInfo &MAI;
  40   const MCInstrInfo &MII;
  41   const MCRegisterInfo &MRI;
  42
  43   /// The current set of available features.
  44   uint64_t AvailableFeatures;
  45
  46   /// True if we are printing marked up assembly.
  47   bool UseMarkup;
  48
  49   /// True if we are printing immediates as hex.
  50   bool PrintImmHex;
  51
  52   /// Which style to use for printing hexadecimal values.
  53   HexStyle::Style PrintHexStyle;
  54
  55   /// Utility function for printing annotations.
  56   void printAnnotation(raw_ostream &OS, StringRef Annot);
  57 public:
  58   MCInstPrinter(const MCAsmInfo &mai, const MCInstrInfo &mii,
  59                 const MCRegisterInfo &mri)
  60     : CommentStream(nullptr), MAI(mai), MII(mii), MRI(mri),
  61       AvailableFeatures(0), UseMarkup(0), PrintImmHex(0),
  62       PrintHexStyle(HexStyle::C) {}
  63
  64   virtual ~MCInstPrinter();
  65
  66   /// setCommentStream - Specify a stream to emit comments to.
  67   void setCommentStream(raw_ostream &OS) { CommentStream = &OS; }
  68
  69   /// printInst - Print the specified MCInst to the specified raw_ostream.
  70   ///
  71   virtual void printInst(const MCInst *MI, raw_ostream &OS,
  72                          StringRef Annot) = 0;
  73
  74   /// getOpcodeName - Return the name of the specified opcode enum (e.g.
  75   /// "MOV32ri") or empty if we can't resolve it.
  76   StringRef getOpcodeName(unsigned Opcode) const;
  77
  78   /// printRegName - Print the assembler register name.
  79   virtual void printRegName(raw_ostream &OS, unsigned RegNo) const;
  80
  81   uint64_t getAvailableFeatures() const { return AvailableFeatures; }
  82   void setAvailableFeatures(uint64_t Value) { AvailableFeatures = Value; }
  83
  84   bool getUseMarkup() const { return UseMarkup; }
  85   void setUseMarkup(bool Value) { UseMarkup = Value; }
  86
  87   /// Utility functions to make adding mark ups simpler.
  88   StringRef markup(StringRef s) const;
  89   StringRef markup(StringRef a, StringRef b) const;
  90
  91   bool getPrintImmHex() const { return PrintImmHex; }
  92   void setPrintImmHex(bool Value) { PrintImmHex = Value; }
  93
  94   HexStyle::Style getPrintHexStyleHex() const { return PrintHexStyle; }
  95   void setPrintImmHex(HexStyle::Style Value) { PrintHexStyle = Value; }
  96
  97   /// Utility function to print immediates in decimal or hex.
  98   format_object1<int64_t> formatImm(const int64_t Value) const { return PrintImmHex ? formatHex(Value) : formatDec(Value); }
  99
 100   /// Utility functions to print decimal/hexadecimal values.
 101   format_object1<int64_t> formatDec(const int64_t Value) const;
 102   format_object1<int64_t> formatHex(const int64_t Value) const;
 103   format_object1<uint64_t> formatHex(const uint64_t Value) const;
 104 };
 105
 106 } // namespace llvm
 107
 108 #endif