LLVM: llvm::MCTargetStreamer Class Reference

LLVM 8.0.1

Target specific streamer interface. More...

#include "llvm/MC/MCStreamer.h"

Inheritance diagram for llvm::MCTargetStreamer:

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Collaboration diagram for llvm::MCTargetStreamer:

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Public Member Functions
	MCTargetStreamer (MCStreamer &S)

virtual	~MCTargetStreamer ()

MCStreamer &	getStreamer ()

virtual void	emitLabel (MCSymbol *Symbol)

virtual void	emitAssignment (MCSymbol Symbol, const MCExpr Value)

virtual void	prettyPrintAsm (MCInstPrinter &InstPrinter, raw_ostream &OS, const MCInst &Inst, const MCSubtargetInfo &STI)

virtual void	emitDwarfFileDirective (StringRef Directive)

virtual void	changeSection (const MCSection CurSection, MCSection Section, const MCExpr *SubSection, raw_ostream &OS)
	Update streamer for a new active section. More...

virtual void	emitValue (const MCExpr *Value)

virtual void	emitRawBytes (StringRef Data)
	Emit the bytes in `Data` into the output. More...

virtual void	finish ()

Protected Attributes
MCStreamer &	Streamer

Detailed Description

Target specific streamer interface.

This is used so that targets can implement support for target specific assembly directives.

If target foo wants to use this, it should implement 3 classes:

FooTargetStreamer : public MCTargetStreamer
FooTargetAsmStreamer : public FooTargetStreamer
FooTargetELFStreamer : public FooTargetStreamer

FooTargetStreamer should have a pure virtual method for each directive. For example, for a ".bar symbol_name" directive, it should have virtual emitBar(const MCSymbol &Symbol) = 0;

The FooTargetAsmStreamer and FooTargetELFStreamer classes implement the method. The assembly streamer just prints ".bar symbol_name". The object streamer does whatever is needed to implement .bar in the object file.

In the assembly printer and parser the target streamer can be used by calling getTargetStreamer and casting it to FooTargetStreamer:

MCTargetStreamer &TS = OutStreamer.getTargetStreamer(); FooTargetStreamer &ATS = static_cast<FooTargetStreamer &>(TS);

The base classes FooTargetAsmStreamer and FooTargetELFStreamer should never be treated differently. Callers should always talk to a FooTargetStreamer.

Definition at line 84 of file MCStreamer.h.

Constructor & Destructor Documentation

◆ MCTargetStreamer()

MCTargetStreamer::MCTargetStreamer ( MCStreamer & S )

Definition at line 42 of file MCStreamer.cpp.

References llvm::MCStreamer::setTargetStreamer(), and ~MCTargetStreamer().

◆ ~MCTargetStreamer()

MCTargetStreamer::~MCTargetStreamer ( )

virtualdefault

Referenced by MCTargetStreamer().

Member Function Documentation

◆ changeSection()

void MCTargetStreamer::changeSection	(	const MCSection *	CurSection,
		MCSection *	Section,
		const MCExpr *	SubSection,
		raw_ostream &	OS
	)

virtual

Update streamer for a new active section.

This is called by PopSection and SwitchSection, if the current section changes.

Reimplemented in llvm::NVPTXTargetStreamer.

Definition at line 53 of file MCStreamer.cpp.

References llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCContext::getObjectFileInfo(), llvm::MCObjectFileInfo::getTargetTriple(), llvm::MCSection::PrintSwitchToSection(), and Streamer.

Referenced by getStreamer().

◆ emitAssignment()

void MCTargetStreamer::emitAssignment	(	MCSymbol *	Symbol,
		const MCExpr *	Value
	)

virtual

Reimplemented in llvm::MipsTargetELFStreamer.

Definition at line 87 of file MCStreamer.cpp.

Referenced by createPPCMCAsmInfo(), llvm::MCStreamer::EmitAssignment(), getStreamer(), and llvm::MipsTargetELFStreamer::setPic().

◆ emitDwarfFileDirective()

void MCTargetStreamer::emitDwarfFileDirective ( StringRef Directive )

virtual

Reimplemented in llvm::NVPTXTargetStreamer.

Definition at line 63 of file MCStreamer.cpp.

References llvm::MCStreamer::EmitRawText(), and Streamer.

Referenced by getStreamer().

◆ emitLabel()

void MCTargetStreamer::emitLabel ( MCSymbol * Symbol )

virtual

Reimplemented in llvm::MipsTargetELFStreamer.

Definition at line 49 of file MCStreamer.cpp.

Referenced by llvm::MCStreamer::EmitLabel(), getStreamer(), and llvm::MipsTargetELFStreamer::setPic().

◆ emitRawBytes()

void MCTargetStreamer::emitRawBytes ( StringRef Data )

virtual

Emit the bytes in Data into the output.

This is used to emit bytes in Data as sequence of .byte directives.

Reimplemented in llvm::NVPTXTargetStreamer.

Definition at line 75 of file MCStreamer.cpp.

References llvm::StringRef::bytes(), C, llvm::MCStreamer::EmitRawText(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCAsmInfo::getData8bitsDirective(), llvm::raw_svector_ostream::str(), and Streamer.

Referenced by getStreamer().

◆ emitValue()

void MCTargetStreamer::emitValue ( const MCExpr * Value )

virtual

Definition at line 67 of file MCStreamer.cpp.

References llvm::MCStreamer::EmitRawText(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCExpr::print(), llvm::raw_svector_ostream::str(), and Streamer.

Referenced by getStreamer().

◆ finish()

void MCTargetStreamer::finish ( )

virtual

Reimplemented in llvm::MipsTargetELFStreamer, llvm::ARMTargetStreamer, llvm::AArch64TargetStreamer, and llvm::AVRTargetStreamer.

Definition at line 51 of file MCStreamer.cpp.

Referenced by createPPCMCAsmInfo(), llvm::MCStreamer::Finish(), getStreamer(), and llvm::MipsTargetELFStreamer::setPic().

◆ getStreamer()

MCStreamer& llvm::MCTargetStreamer::getStreamer ( )

inline

Definition at line 92 of file MCStreamer.h.

References changeSection(), llvm::Data, emitAssignment(), emitDwarfFileDirective(), emitLabel(), emitRawBytes(), emitValue(), finish(), prettyPrintAsm(), llvm::ARMBuildAttrs::Section, Streamer, and llvm::ARMBuildAttrs::Symbol.

Referenced by llvm::NVPTXTargetStreamer::changeSection(), checkScale(), countMCSymbolRefExpr(), createPPCMCAsmInfo(), llvm::AMDGPUAsmPrinter::EmitFunctionBodyEnd(), llvm::MipsTargetStreamer::emitII(), llvm::AArch64TargetStreamer::emitInst(), llvm::ARMTargetStreamer::emitInst(), llvm::MipsTargetStreamer::emitR(), llvm::MipsTargetStreamer::emitRRIII(), llvm::MipsTargetStreamer::emitRRX(), llvm::MipsTargetStreamer::emitRX(), llvm::AVRTargetStreamer::finish(), llvm::MipsTargetELFStreamer::isMicroMipsEnabled(), nextReg(), and llvm::NVPTXTargetStreamer::outputDwarfFileDirectives().

◆ prettyPrintAsm()

void MCTargetStreamer::prettyPrintAsm	(	MCInstPrinter &	InstPrinter,
		raw_ostream &	OS,
		const MCInst &	Inst,
		const MCSubtargetInfo &	STI
	)

virtual

Definition at line 921 of file MCStreamer.cpp.

References llvm::MCInstPrinter::printInst().

Referenced by getStreamer().

Member Data Documentation

◆ Streamer

MCStreamer& llvm::MCTargetStreamer::Streamer

protected

Definition at line 86 of file MCStreamer.h.

Referenced by llvm::AArch64TargetStreamer::addConstantPoolEntry(), llvm::ARMTargetStreamer::addConstantPoolEntry(), changeSection(), createPPCMCAsmInfo(), llvm::AArch64TargetStreamer::emitCurrentConstantPool(), llvm::ARMTargetStreamer::emitCurrentConstantPool(), llvm::MipsTargetELFStreamer::emitDirectiveInsn(), emitDwarfFileDirective(), llvm::WebAssemblyTargetWasmStreamer::emitLocal(), llvm::NVPTXTargetStreamer::emitRawBytes(), emitRawBytes(), emitValue(), llvm::WebAssemblyTargetStreamer::emitValueType(), llvm::AArch64TargetStreamer::finish(), llvm::ARMTargetStreamer::finish(), llvm::MipsTargetELFStreamer::finish(), llvm::AMDGPUTargetStreamer::getContext(), llvm::RISCVTargetELFStreamer::getStreamer(), llvm::AVRELFStreamer::getStreamer(), llvm::MSP430TargetELFStreamer::getStreamer(), llvm::SparcTargetELFStreamer::getStreamer(), getStreamer(), llvm::MipsTargetELFStreamer::getStreamer(), and llvm::MSP430TargetELFStreamer::MSP430TargetELFStreamer().

The documentation for this class was generated from the following files:

include/llvm/MC/MCStreamer.h
lib/MC/MCStreamer.cpp