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) {}
36 MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
37 MCCodeEmitter *Emitter, MCAssembler *Assembler)
38 : MCObjectStreamer(Context, TAB, OS, Emitter, Assembler) {}
40 virtual ~MCELFStreamer();
42 /// @name MCStreamer Interface
45 virtual void InitSections();
46 virtual void InitToTextSection();
47 virtual void ChangeSection(const MCSection *Section,
48 const MCExpr *Subsection);
49 virtual void EmitLabel(MCSymbol *Symbol);
50 virtual void EmitDebugLabel(MCSymbol *Symbol);
51 virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
52 virtual void EmitThumbFunc(MCSymbol *Func);
53 virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
54 virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
55 virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
56 virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
57 unsigned ByteAlignment);
58 virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
59 virtual void EmitCOFFSymbolStorageClass(int StorageClass);
60 virtual void EmitCOFFSymbolType(int Type);
61 virtual void EndCOFFSymbolDef();
63 virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
65 virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
67 virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
68 unsigned ByteAlignment);
70 virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
71 uint64_t Size = 0, unsigned ByteAlignment = 0);
72 virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
73 uint64_t Size, unsigned ByteAlignment = 0);
74 virtual void EmitValueImpl(const MCExpr *Value, unsigned Size);
76 virtual void EmitFileDirective(StringRef Filename);
78 virtual void EmitTCEntry(const MCSymbol &S);
80 virtual void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned);
84 virtual void FinishImpl();
87 virtual void EmitInstToFragment(const MCInst &Inst);
88 virtual void EmitInstToData(const MCInst &Inst);
90 virtual void EmitBundleAlignMode(unsigned AlignPow2);
91 virtual void EmitBundleLock(bool AlignToEnd);
92 virtual void EmitBundleUnlock();
94 void fixSymbolsInTLSFixups(const MCExpr *expr);
99 unsigned ByteAlignment;
102 std::vector<LocalCommon> LocalCommons;
104 SmallPtrSet<MCSymbol *, 16> BindingExplicitlySet;
107 void SetSection(StringRef Section, unsigned Type, unsigned Flags,
109 void SetSectionData();
110 void SetSectionText();
111 void SetSectionBss();
114 MCELFStreamer *createMipsELFStreamer(MCContext &Context, MCAsmBackend &TAB,
115 raw_ostream &OS, MCCodeEmitter *Emitter,
116 bool RelaxAll, bool NoExecStack);
118 MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
119 raw_ostream &OS, MCCodeEmitter *Emitter,
120 bool RelaxAll, bool NoExecStack,
123 } // end namespace llvm