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//===- 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
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