| //===-- AVRAsmBackend.h - AVR Asm 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // \file The AVR assembly backend implementation. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| |
| #ifndef LLVM_AVR_ASM_BACKEND_H |
| #define LLVM_AVR_ASM_BACKEND_H |
| |
| #include "MCTargetDesc/AVRFixupKinds.h" |
| |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/MC/MCAsmBackend.h" |
| |
| namespace llvm { |
| |
| class MCAssembler; |
| class MCObjectWriter; |
| class Target; |
| |
| struct MCFixupKindInfo; |
| |
| /// Utilities for manipulating generated AVR machine code. |
| class AVRAsmBackend : public MCAsmBackend { |
| public: |
| AVRAsmBackend(Triple::OSType OSType) |
| : MCAsmBackend(support::little), OSType(OSType) {} |
| |
| void adjustFixupValue(const MCFixup &Fixup, const MCValue &Target, |
| uint64_t &Value, MCContext *Ctx = nullptr) const; |
| |
| std::unique_ptr<MCObjectTargetWriter> |
| createObjectTargetWriter() const override; |
| |
| void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup, |
| const MCValue &Target, MutableArrayRef<char> Data, |
| uint64_t Value, bool IsResolved, |
| const MCSubtargetInfo *STI) const override; |
| |
| const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override; |
| |
| unsigned getNumFixupKinds() const override { |
| return AVR::NumTargetFixupKinds; |
| } |
| |
| bool mayNeedRelaxation(const MCInst &Inst, |
| const MCSubtargetInfo &STI) const override { |
| return false; |
| } |
| |
| bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value, |
| const MCRelaxableFragment *DF, |
| const MCAsmLayout &Layout) const override { |
| llvm_unreachable("RelaxInstruction() unimplemented"); |
| return false; |
| } |
| |
| void relaxInstruction(const MCInst &Inst, const MCSubtargetInfo &STI, |
| MCInst &Res) const override {} |
| |
| bool writeNopData(raw_ostream &OS, uint64_t Count) const override; |
| |
| bool shouldForceRelocation(const MCAssembler &Asm, const MCFixup &Fixup, |
| const MCValue &Target) override; |
| |
| private: |
| Triple::OSType OSType; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_AVR_ASM_BACKEND_H |
| |