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1//===-- ARMAsmBackend.h - ARM Assembler Backend -----------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIB_TARGET_ARM_ARMASMBACKEND_H10#define LLVM_LIB_TARGET_ARM_ARMASMBACKEND_H11 12#include "MCTargetDesc/ARMFixupKinds.h"13#include "MCTargetDesc/ARMMCTargetDesc.h"14#include "llvm/MC/MCAsmBackend.h"15#include "llvm/MC/MCSubtargetInfo.h"16#include "llvm/MC/TargetRegistry.h"17 18namespace llvm {19 20class ARMAsmBackend : public MCAsmBackend {21public:22 ARMAsmBackend(const Target &T, llvm::endianness Endian)23 : MCAsmBackend(Endian) {}24 25 bool hasNOP(const MCSubtargetInfo *STI) const {26 return STI->hasFeature(ARM::HasV6T2Ops);27 }28 29 std::optional<MCFixupKind> getFixupKind(StringRef Name) const override;30 31 MCFixupKindInfo getFixupKindInfo(MCFixupKind Kind) const override;32 33 bool shouldForceRelocation(const MCFixup &Fixup, const MCValue &Target);34 35 unsigned adjustFixupValue(const MCAssembler &Asm, const MCFixup &Fixup,36 const MCValue &Target, uint64_t Value,37 bool IsResolved, MCContext &Ctx,38 const MCSubtargetInfo *STI) const;39 40 std::optional<bool> evaluateFixup(const MCFragment &, MCFixup &, MCValue &,41 uint64_t &) override;42 void applyFixup(const MCFragment &, const MCFixup &, const MCValue &Target,43 uint8_t *Data, uint64_t Value, bool IsResolved) override;44 45 unsigned getRelaxedOpcode(unsigned Op, const MCSubtargetInfo &STI) const;46 47 bool mayNeedRelaxation(unsigned Opcode, ArrayRef<MCOperand> Operands,48 const MCSubtargetInfo &STI) const override;49 50 const char *reasonForFixupRelaxation(const MCFixup &Fixup,51 uint64_t Value) const;52 53 bool fixupNeedsRelaxationAdvanced(const MCFragment &, const MCFixup &,54 const MCValue &, uint64_t,55 bool) const override;56 57 void relaxInstruction(MCInst &Inst,58 const MCSubtargetInfo &STI) const override;59 60 bool writeNopData(raw_ostream &OS, uint64_t Count,61 const MCSubtargetInfo *STI) const override;62 63 unsigned getPointerSize() const { return 4; }64};65} // end namespace llvm66 67#endif68