class MCCodeEmitter;
class MCExpr;
class MCInst;
-class MCSymbol;
-class MCSymbolData;
class raw_ostream;
class MCELFStreamer : public MCObjectStreamer {
-protected:
- MCELFStreamer(StreamerKind Kind, MCContext &Context, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *Emitter)
- : MCObjectStreamer(Kind, Context, TAB, OS, Emitter) {}
-
public:
- MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
+ MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_pwrite_stream &OS,
MCCodeEmitter *Emitter)
- : MCObjectStreamer(SK_ELFStreamer, Context, TAB, OS, Emitter) {}
+ : MCObjectStreamer(Context, TAB, OS, Emitter), SeenIdent(false) {}
- MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
- MCCodeEmitter *Emitter, MCAssembler *Assembler)
- : MCObjectStreamer(SK_ELFStreamer, Context, TAB, OS, Emitter,
- Assembler) {}
+ ~MCELFStreamer() override;
- virtual ~MCELFStreamer();
+ /// state management
+ void reset() override {
+ SeenIdent = false;
+ BundleGroups.clear();
+ MCObjectStreamer::reset();
+ }
- /// @name MCStreamer Interface
+ /// \name MCStreamer Interface
/// @{
- virtual void InitSections();
- virtual void InitToTextSection();
- virtual void ChangeSection(const MCSection *Section,
- const MCExpr *Subsection);
- virtual void EmitLabel(MCSymbol *Symbol);
- virtual void EmitDebugLabel(MCSymbol *Symbol);
- virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
- virtual void EmitThumbFunc(MCSymbol *Func);
- virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
- virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
- virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
- virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment);
- virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
- virtual void EmitCOFFSymbolStorageClass(int StorageClass);
- virtual void EmitCOFFSymbolType(int Type);
- virtual void EndCOFFSymbolDef();
+ void InitSections(bool NoExecStack) override;
+ void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
+ void EmitLabel(MCSymbol *Symbol) override;
+ void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
+ void EmitThumbFunc(MCSymbol *Func) override;
+ void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
+ bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
+ void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
+ void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override;
+ void BeginCOFFSymbolDef(const MCSymbol *Symbol) override;
+ void EmitCOFFSymbolStorageClass(int StorageClass) override;
+ void EmitCOFFSymbolType(int Type) override;
+ void EndCOFFSymbolDef() override;
- virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
+ void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) override;
- virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
+ void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override;
- virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment);
+ void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
+ uint64_t Size = 0, unsigned ByteAlignment = 0) override;
+ void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment = 0) override;
+ void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ SMLoc Loc = SMLoc()) override;
- virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
- uint64_t Size = 0, unsigned ByteAlignment = 0);
- virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
- uint64_t Size, unsigned ByteAlignment = 0);
- virtual void EmitValueImpl(const MCExpr *Value, unsigned Size);
+ void EmitFileDirective(StringRef Filename) override;
- virtual void EmitFileDirective(StringRef Filename);
+ void EmitIdent(StringRef IdentString) override;
- virtual void EmitTCEntry(const MCSymbol &S);
+ void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
- virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned);
+ void FinishImpl() override;
- virtual void FinishImpl();
- /// @}
-
- static bool classof(const MCStreamer *S) {
- return S->getKind() == SK_ELFStreamer || S->getKind() == SK_ARMELFStreamer;
- }
+ void EmitBundleAlignMode(unsigned AlignPow2) override;
+ void EmitBundleLock(bool AlignToEnd) override;
+ void EmitBundleUnlock() override;
private:
- virtual void EmitInstToFragment(const MCInst &Inst);
- virtual void EmitInstToData(const MCInst &Inst);
-
- virtual void EmitBundleAlignMode(unsigned AlignPow2);
- virtual void EmitBundleLock(bool AlignToEnd);
- virtual void EmitBundleUnlock();
+ bool isBundleLocked() const;
+ void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
+ void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
void fixSymbolsInTLSFixups(const MCExpr *expr);
- struct LocalCommon {
- MCSymbolData *SD;
- uint64_t Size;
- unsigned ByteAlignment;
- };
-
- std::vector<LocalCommon> LocalCommons;
+ /// \brief Merge the content of the fragment \p EF into the fragment \p DF.
+ void mergeFragment(MCDataFragment *, MCDataFragment *);
- SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
+ bool SeenIdent;
-
- void SetSection(StringRef Section, unsigned Type, unsigned Flags,
- SectionKind Kind);
- void SetSectionData();
- void SetSectionText();
- void SetSectionBss();
+ /// BundleGroups - The stack of fragments holding the bundle-locked
+ /// instructions.
+ llvm::SmallVector<MCDataFragment *, 4> BundleGroups;
};
+MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
+ raw_pwrite_stream &OS,
+ MCCodeEmitter *Emitter, bool RelaxAll,
+ bool IsThumb);
+
} // end namespace llvm
#endif