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,
33 raw_ostream &OS, MCCodeEmitter *Emitter)
34 : MCObjectStreamer(Context, TAB, OS, Emitter) {}
36 MCELFStreamer(MCContext &Context, MCAsmBackend &TAB,
37 raw_ostream &OS, MCCodeEmitter *Emitter,
38 MCAssembler *Assembler)
39 : MCObjectStreamer(Context, TAB, OS, Emitter, Assembler) {}
41 virtual ~MCELFStreamer();
43 /// @name MCStreamer Interface
46 virtual void InitSections();
47 virtual void ChangeSection(const MCSection *Section);
48 virtual void EmitLabel(MCSymbol *Symbol);
49 virtual void EmitDebugLabel(MCSymbol *Symbol);
50 virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
51 virtual void EmitThumbFunc(MCSymbol *Func);
52 virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
53 virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
54 virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
55 virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
56 unsigned ByteAlignment);
57 virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
58 virtual void EmitCOFFSymbolStorageClass(int StorageClass);
59 virtual void EmitCOFFSymbolType(int Type);
60 virtual void EndCOFFSymbolDef();
62 virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
64 virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
65 unsigned ByteAlignment);
67 virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
68 uint64_t Size = 0, unsigned ByteAlignment = 0);
69 virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
70 uint64_t Size, unsigned ByteAlignment = 0);
71 virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
74 virtual void EmitFileDirective(StringRef Filename);
76 virtual void EmitTCEntry(const MCSymbol &S);
78 virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned);
80 virtual void FinishImpl();
84 virtual void EmitInstToFragment(const MCInst &Inst);
85 virtual void EmitInstToData(const MCInst &Inst);
87 virtual void EmitBundleAlignMode(unsigned AlignPow2);
88 virtual void EmitBundleLock(bool AlignToEnd);
89 virtual void EmitBundleUnlock();
91 void fixSymbolsInTLSFixups(const MCExpr *expr);
96 unsigned ByteAlignment;
99 std::vector<LocalCommon> LocalCommons;
101 SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
104 void SetSection(StringRef Section, unsigned Type, unsigned Flags,
106 void SetSectionData();
107 void SetSectionText();
108 void SetSectionBss();
111 } // end namespace llvm