forked from OSchip/llvm-project
87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
//===- HexagonMCCodeEmitter.h - Hexagon Target Descriptions -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief Definition for classes that emit Hexagon machine code from MCInsts
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCCODEEMITTER_H
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#define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCCODEEMITTER_H
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#include "MCTargetDesc/HexagonFixupKinds.h"
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#include "llvm/MC/MCCodeEmitter.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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namespace llvm {
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class MCContext;
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class MCInst;
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class MCInstrInfo;
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class MCOperand;
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class MCSubtargetInfo;
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class raw_ostream;
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class HexagonMCCodeEmitter : public MCCodeEmitter {
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MCContext &MCT;
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MCInstrInfo const &MCII;
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std::unique_ptr<unsigned> Addend;
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std::unique_ptr<bool> Extended;
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std::unique_ptr<MCInst const *> CurrentBundle;
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std::unique_ptr<size_t> CurrentIndex;
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// helper routine for getMachineOpValue()
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unsigned getExprOpValue(const MCInst &MI, const MCOperand &MO,
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const MCExpr *ME, SmallVectorImpl<MCFixup> &Fixups,
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const MCSubtargetInfo &STI) const;
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Hexagon::Fixups getFixupNoBits(MCInstrInfo const &MCII, const MCInst &MI,
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const MCOperand &MO,
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const MCSymbolRefExpr::VariantKind kind) const;
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public:
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HexagonMCCodeEmitter(MCInstrInfo const &aMII, MCContext &aMCT);
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// Return parse bits for instruction `MCI' inside bundle `MCB'
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uint32_t parseBits(size_t Last, MCInst const &MCB, MCInst const &MCI) const;
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void encodeInstruction(MCInst const &MI, raw_ostream &OS,
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SmallVectorImpl<MCFixup> &Fixups,
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MCSubtargetInfo const &STI) const override;
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void EncodeSingleInstruction(const MCInst &MI, raw_ostream &OS,
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SmallVectorImpl<MCFixup> &Fixups,
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const MCSubtargetInfo &STI,
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uint32_t Parse) const;
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// \brief TableGen'erated function for getting the
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// binary encoding for an instruction.
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uint64_t getBinaryCodeForInstr(MCInst const &MI,
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SmallVectorImpl<MCFixup> &Fixups,
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MCSubtargetInfo const &STI) const;
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/// \brief Return binary encoding of operand.
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unsigned getMachineOpValue(MCInst const &MI, MCOperand const &MO,
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SmallVectorImpl<MCFixup> &Fixups,
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MCSubtargetInfo const &STI) const;
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private:
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uint64_t computeAvailableFeatures(const FeatureBitset &FB) const;
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void verifyInstructionPredicates(const MCInst &MI,
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uint64_t AvailableFeatures) const;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCCODEEMITTER_H
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