79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
//===-- AVRAsmBackend.h - AVR Asm Backend --------------------------------===//
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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 The AVR assembly backend implementation.
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//
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//===----------------------------------------------------------------------===//
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//
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#ifndef LLVM_AVR_ASM_BACKEND_H
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#define LLVM_AVR_ASM_BACKEND_H
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#include "MCTargetDesc/AVRFixupKinds.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/MC/MCAsmBackend.h"
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namespace llvm {
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class MCAssembler;
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class MCObjectWriter;
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class Target;
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struct MCFixupKindInfo;
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/// Utilities for manipulating generated AVR machine code.
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class AVRAsmBackend : public MCAsmBackend {
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public:
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AVRAsmBackend(Triple::OSType OSType)
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: MCAsmBackend(), OSType(OSType) {}
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void adjustFixupValue(const MCFixup &Fixup, uint64_t &Value,
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MCContext *Ctx = nullptr) const;
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MCObjectWriter *createObjectWriter(raw_pwrite_stream &OS) const override;
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void applyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
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uint64_t Value, bool IsPCRel) const override;
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const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override;
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unsigned getNumFixupKinds() const override {
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return AVR::NumTargetFixupKinds;
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}
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bool mayNeedRelaxation(const MCInst &Inst) const override { return false; }
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bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value,
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const MCRelaxableFragment *DF,
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const MCAsmLayout &Layout) const override {
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llvm_unreachable("RelaxInstruction() unimplemented");
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return false;
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}
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void relaxInstruction(const MCInst &Inst, const MCSubtargetInfo &STI,
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MCInst &Res) const override {}
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bool writeNopData(uint64_t Count, MCObjectWriter *OW) const override;
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void processFixupValue(const MCAssembler &Asm, const MCAsmLayout &Layout,
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const MCFixup &Fixup, const MCFragment *DF,
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const MCValue &Target, uint64_t &Value,
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bool &IsResolved) override;
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private:
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Triple::OSType OSType;
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};
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} // end namespace llvm
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#endif // LLVM_AVR_ASM_BACKEND_H
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