//===-- HexagonMCCodeEmitter.h - Hexagon Target Descriptions ----*- C++ -*-===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is distributed under the University of Illinois Open Source

// License. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

///

/// \file

/// \brief Definition for classes that emit Hexagon machine code from MCInsts

///

//===----------------------------------------------------------------------===//

#ifndef HEXAGONMCCODEEMITTER_H

#define HEXAGONMCCODEEMITTER_H

#include "llvm/MC/MCCodeEmitter.h"

#include "llvm/MC/MCExpr.h"

#include "llvm/MC/MCInst.h"

#include "llvm/MC/MCInstrInfo.h"

#include "llvm/MC/MCRegisterInfo.h"

#include "llvm/MC/MCSubtargetInfo.h"

#include "llvm/Support/raw_ostream.h"

namespace llvm_ks {

class HexagonMCCodeEmitter : public MCCodeEmitter {

  MCContext &MCT;

  MCInstrInfo const &MCII;

  std::unique_ptr<unsigned> Addend;

  std::unique_ptr<bool> Extended;

  std::unique_ptr<MCInst const *> CurrentBundle;

  mutable unsigned KsError;

  // helper routine for getMachineOpValue()

  unsigned getExprOpValue(const MCInst &MI, const MCOperand &MO,

                          const MCExpr *ME, SmallVectorImpl<MCFixup> &Fixups,

                          const MCSubtargetInfo &STI) const;

public:

  HexagonMCCodeEmitter(MCInstrInfo const &aMII, MCContext &aMCT);

  void setError(unsigned E) const { KsError = E; }

  unsigned getError() const { return KsError; }

  // Return parse bits for instruction `MCI' inside bundle `MCB'

  uint32_t parseBits(size_t Instruction, size_t Last, MCInst const &MCB,

                    MCInst const &MCI) const;

  void encodeInstruction(MCInst &MI, raw_ostream &OS,

                         SmallVectorImpl<MCFixup> &Fixups,

                         MCSubtargetInfo const &STI,

                         unsigned int &KsError) const override;

  void EncodeSingleInstruction(const MCInst &MI, raw_ostream &OS,

                               SmallVectorImpl<MCFixup> &Fixups,

                               const MCSubtargetInfo &STI,

                               uint32_t Parse, size_t Index) const;

  // \brief TableGen'erated function for getting the

  // binary encoding for an instruction.

  uint64_t getBinaryCodeForInstr(MCInst const &MI,

                                 SmallVectorImpl<MCFixup> &Fixups,

                                 MCSubtargetInfo const &STI) const;

  /// \brief Return binary encoding of operand.

  unsigned getMachineOpValue(MCInst const &MI, MCOperand const &MO,

                             SmallVectorImpl<MCFixup> &Fixups,

                             MCSubtargetInfo const &STI) const;

}; // class HexagonMCCodeEmitter

} // namespace llvm_ks

#endif /* HEXAGONMCCODEEMITTER_H */