| //===- MCELFStreamer.h - MCStreamer ELF Object File Interface ---*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_MC_MCELFSTREAMER_H |
| #define LLVM_MC_MCELFSTREAMER_H |
| |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/MC/MCDirectives.h" |
| #include "llvm/MC/MCObjectStreamer.h" |
| #include "llvm/MC/SectionKind.h" |
| #include "llvm/Support/DataTypes.h" |
| #include <vector> |
| |
| namespace llvm { |
| class MCAsmBackend; |
| class MCAssembler; |
| 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, |
| MCCodeEmitter *Emitter) |
| : MCObjectStreamer(SK_ELFStreamer, Context, TAB, OS, Emitter) {} |
| |
| MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS, |
| MCCodeEmitter *Emitter, MCAssembler *Assembler) |
| : MCObjectStreamer(SK_ELFStreamer, Context, TAB, OS, Emitter, |
| Assembler) {} |
| |
| virtual ~MCELFStreamer(); |
| |
| /// @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(); |
| |
| virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol); |
| |
| virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value); |
| |
| virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, |
| unsigned ByteAlignment); |
| |
| 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, |
| unsigned AddrSpace); |
| |
| virtual void EmitFileDirective(StringRef Filename); |
| |
| virtual void EmitTCEntry(const MCSymbol &S); |
| |
| virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned); |
| |
| virtual void FinishImpl(); |
| /// @} |
| |
| static bool classof(const MCStreamer *S) { |
| return S->getKind() == SK_ELFStreamer || S->getKind() == SK_ARMELFStreamer; |
| } |
| |
| 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(); |
| |
| void fixSymbolsInTLSFixups(const MCExpr *expr); |
| |
| struct LocalCommon { |
| MCSymbolData *SD; |
| uint64_t Size; |
| unsigned ByteAlignment; |
| }; |
| |
| std::vector<LocalCommon> LocalCommons; |
| |
| SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet; |
| |
| |
| void SetSection(StringRef Section, unsigned Type, unsigned Flags, |
| SectionKind Kind); |
| void SetSectionData(); |
| void SetSectionText(); |
| void SetSectionBss(); |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |