110 lines
4.0 KiB
C
110 lines
4.0 KiB
C
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//===- MCELFStreamer.h - MCStreamer ELF Object File Interface ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCELFSTREAMER_H
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#define LLVM_MC_MCELFSTREAMER_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCObjectStreamer.h"
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namespace llvm {
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class MCAsmBackend;
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class MCCodeEmitter;
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class MCExpr;
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class MCInst;
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class MCELFStreamer : public MCObjectStreamer {
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public:
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MCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
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std::unique_ptr<MCObjectWriter> OW,
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std::unique_ptr<MCCodeEmitter> Emitter);
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~MCELFStreamer() override = default;
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/// state management
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void reset() override {
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SeenIdent = false;
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BundleGroups.clear();
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MCObjectStreamer::reset();
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}
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/// \name MCStreamer Interface
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/// @{
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void InitSections(bool NoExecStack) override;
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void changeSection(MCSection *Section, const MCExpr *Subsection) override;
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void emitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
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void emitLabelAtPos(MCSymbol *Symbol, SMLoc Loc, MCFragment *F,
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uint64_t Offset) override;
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void emitAssemblerFlag(MCAssemblerFlag Flag) override;
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void emitThumbFunc(MCSymbol *Func) override;
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void emitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
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bool emitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
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void emitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
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void emitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
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void emitELFSymverDirective(StringRef AliasName,
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const MCSymbol *Aliasee) override;
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void emitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void emitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
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uint64_t Size = 0, unsigned ByteAlignment = 0,
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SMLoc L = SMLoc()) override;
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void emitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment = 0) override;
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void emitValueImpl(const MCExpr *Value, unsigned Size,
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SMLoc Loc = SMLoc()) override;
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void emitIdent(StringRef IdentString) override;
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void emitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
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void emitCGProfileEntry(const MCSymbolRefExpr *From,
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const MCSymbolRefExpr *To, uint64_t Count) override;
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void finishImpl() override;
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void emitBundleAlignMode(unsigned AlignPow2) override;
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void emitBundleLock(bool AlignToEnd) override;
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void emitBundleUnlock() override;
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private:
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bool isBundleLocked() const;
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void emitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
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void emitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
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void fixSymbolsInTLSFixups(const MCExpr *expr);
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void finalizeCGProfileEntry(const MCSymbolRefExpr *&S);
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void finalizeCGProfile();
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/// Merge the content of the fragment \p EF into the fragment \p DF.
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void mergeFragment(MCDataFragment *, MCDataFragment *);
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bool SeenIdent = false;
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/// BundleGroups - The stack of fragments holding the bundle-locked
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/// instructions.
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SmallVector<MCDataFragment *, 4> BundleGroups;
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};
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MCELFStreamer *createARMELFStreamer(MCContext &Context,
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std::unique_ptr<MCAsmBackend> TAB,
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std::unique_ptr<MCObjectWriter> OW,
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std::unique_ptr<MCCodeEmitter> Emitter,
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bool RelaxAll, bool IsThumb, bool IsAndroid);
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} // end namespace llvm
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#endif // LLVM_MC_MCELFSTREAMER_H
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