1 //===-- llvm/MC/MCCodeEmitter.h - Instruction Encoding ----------*- 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_MCCODEEMITTER_H
11 #define LLVM_MC_MCCODEEMITTER_H
12 
13 #include "llvm/Support/Compiler.h"
14 
15 namespace llvm {
16 class MCFixup;
17 class MCInst;
18 class MCSubtargetInfo;
19 class raw_ostream;
20 template<typename T> class SmallVectorImpl;
21 
22 /// MCCodeEmitter - Generic instruction encoding interface.
23 class MCCodeEmitter {
24 private:
25   MCCodeEmitter(const MCCodeEmitter &) = delete;
26   void operator=(const MCCodeEmitter &) = delete;
27 
28 protected: // Can only create subclasses.
29   MCCodeEmitter();
30 
31 public:
32   virtual ~MCCodeEmitter();
33 
34   /// Lifetime management
reset()35   virtual void reset() {}
36 
37   /// EncodeInstruction - Encode the given \p Inst to bytes on the output
38   /// stream \p OS.
39   virtual void encodeInstruction(const MCInst &Inst, raw_ostream &OS,
40                                  SmallVectorImpl<MCFixup> &Fixups,
41                                  const MCSubtargetInfo &STI) const = 0;
42 };
43 
44 } // End llvm namespace
45 
46 #endif
47