llvm/lib/Target/CSKY/MCTargetDesc/CSKYAsmBackend.h

//===-- CSKYAsmBackend.h - CSKY Assembler Backend -------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H
#define LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H

#include "MCTargetDesc/CSKYFixupKinds.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCTargetOptions.h"

namespace llvm {

class CSKYAsmBackend : public MCAsmBackend {

public:
  CSKYAsmBackend(const MCSubtargetInfo &STI, const MCTargetOptions &OP)
      : MCAsmBackend(llvm::endianness::little) {}

  std::optional<bool> evaluateFixup(const MCFragment &, MCFixup &, MCValue &,
                                    uint64_t &) override;
  void applyFixup(const MCFragment &, const MCFixup &, const MCValue &Target,
                  uint8_t *Data, uint64_t Value, bool IsResolved) override;

  MCFixupKindInfo getFixupKindInfo(MCFixupKind Kind) const override;

  bool fixupNeedsRelaxation(const MCFixup &Fixup,
                            uint64_t Value) const override;

  bool mayNeedRelaxation(unsigned Opcode, ArrayRef<MCOperand> Operands,
                         const MCSubtargetInfo &STI) const override;
  void relaxInstruction(MCInst &Inst,
                        const MCSubtargetInfo &STI) const override;

  bool fixupNeedsRelaxationAdvanced(const MCFragment &, const MCFixup &,
                                    const MCValue &, uint64_t,
                                    bool) const override;

  bool writeNopData(raw_ostream &OS, uint64_t Count,
                    const MCSubtargetInfo *STI) const override;

  bool shouldForceRelocation(const MCFixup &Fixup, const MCValue &Target);

  std::unique_ptr<MCObjectTargetWriter>
  createObjectTargetWriter() const override;
};
} // namespace llvm

#endif // LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H