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//===-- AVRAsmBackend.h - AVR Asm Backend --------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// \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(), OSType(OSType) {}
void adjustFixupValue(const MCFixup &Fixup, const MCValue &Target,
uint64_t &Value, MCContext *Ctx = nullptr) const;
MCObjectWriter *createObjectWriter(raw_pwrite_stream &OS) const override;
void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
const MCValue &Target, MutableArrayRef<char> Data,
uint64_t Value, bool IsPCRel) const override;
const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override;
unsigned getNumFixupKinds() const override {
return AVR::NumTargetFixupKinds;
}
bool mayNeedRelaxation(const MCInst &Inst) 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(uint64_t Count, MCObjectWriter *OW) 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
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