1 //===- MCELFStreamer.h - MCStreamer ELF Object File Interface ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_MC_MCELFSTREAMER_H
11 #define LLVM_MC_MCELFSTREAMER_H
13 #include "llvm/ADT/SmallPtrSet.h"
14 #include "llvm/MC/MCDirectives.h"
15 #include "llvm/MC/MCObjectStreamer.h"
16 #include "llvm/MC/SectionKind.h"
17 #include "llvm/Support/DataTypes.h"
30 class MCELFStreamer : public MCObjectStreamer {
32 MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
33 MCCodeEmitter *Emitter)
34 : MCObjectStreamer(Context, TAB, OS, Emitter),
37 MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
38 MCCodeEmitter *Emitter, MCAssembler *Assembler)
39 : MCObjectStreamer(Context, TAB, OS, Emitter, Assembler),
42 virtual ~MCELFStreamer();
44 /// @name MCStreamer Interface
47 virtual void InitSections();
48 virtual void ChangeSection(const MCSection *Section,
49 const MCExpr *Subsection);
50 virtual void EmitLabel(MCSymbol *Symbol);
51 virtual void EmitDebugLabel(MCSymbol *Symbol);
52 virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
53 virtual void EmitThumbFunc(MCSymbol *Func);
54 virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
55 virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
56 virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
57 virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
58 unsigned ByteAlignment);
59 virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
60 virtual void EmitCOFFSymbolStorageClass(int StorageClass);
61 virtual void EmitCOFFSymbolType(int Type);
62 virtual void EndCOFFSymbolDef();
64 virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
66 virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
68 virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
69 unsigned ByteAlignment);
71 virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
72 uint64_t Size = 0, unsigned ByteAlignment = 0);
73 virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
74 uint64_t Size, unsigned ByteAlignment = 0);
75 virtual void EmitValueImpl(const MCExpr *Value, unsigned Size);
77 virtual void EmitFileDirective(StringRef Filename);
79 virtual void EmitIdent(StringRef IdentString);
81 virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned);
85 virtual void FinishImpl();
87 virtual void EmitBundleAlignMode(unsigned AlignPow2);
88 virtual void EmitBundleLock(bool AlignToEnd);
89 virtual void EmitBundleUnlock();
92 virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &);
93 virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &);
95 void fixSymbolsInTLSFixups(const MCExpr *expr);
102 unsigned ByteAlignment;
105 std::vector<LocalCommon> LocalCommons;
107 SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
110 MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
111 raw_ostream &OS, MCCodeEmitter *Emitter,
112 bool RelaxAll, bool NoExecStack,
115 } // end namespace llvm