#include "llvm/MC/MCELFStreamer.h"

Inheritance diagram for llvm::MCELFStreamer:

[legend]

Collaboration diagram for llvm::MCELFStreamer:

Public Member Functions
	MCELFStreamer (MCContext &Context, std::unique_ptr< MCAsmBackend > TAB, std::unique_ptr< MCObjectWriter > OW, std::unique_ptr< MCCodeEmitter > Emitter)

	~MCELFStreamer () override=default

void	reset () override
	state management More...

Public Member Functions inherited from llvm::MCObjectStreamer
void	reset () override
	state management More...

bool	isIntegratedAssemblerRequired () const override
	Object streamers require the integrated assembler. More...

void	EmitFrames (MCAsmBackend *MAB)

void	EmitCFISections (bool EH, bool Debug) override

MCFragment *	getCurrentFragment () const

void	insert (MCFragment *F)

MCDataFragment *	getOrCreateDataFragment (const MCSubtargetInfo *STI=nullptr)
	Get a data fragment to write into, creating a new one if the current fragment is not a data fragment. More...

MCPaddingFragment *	getOrCreatePaddingFragment ()

void	visitUsedSymbol (const MCSymbol &Sym) override

void	flushPendingLabels ()
	Create a dummy fragment to assign any pending labels. More...

MCAssembler &	getAssembler ()

MCAssembler *	getAssemblerPtr () override

void	EmitLabel (MCSymbol *Symbol, SMLoc Loc=SMLoc()) override
	Emit a label for `Symbol` into the current section. More...

void	EmitAssignment (MCSymbol Symbol, const MCExpr Value) override
	Emit an assignment of `Value` to `Symbol`. More...

void	EmitValueImpl (const MCExpr *Value, unsigned Size, SMLoc Loc=SMLoc()) override
	Emit the expression `Value` into the output as a native integer of the given `Size` bytes. More...

void	EmitULEB128Value (const MCExpr *Value) override

void	EmitSLEB128Value (const MCExpr *Value) override

void	EmitWeakReference (MCSymbol Alias, const MCSymbol Symbol) override
	Emit an weak reference from `Alias` to `Symbol`. More...

void	ChangeSection (MCSection Section, const MCExpr Subsection) override
	Update streamer for a new active section. More...

void	EmitInstruction (const MCInst &Inst, const MCSubtargetInfo &STI, bool=false) override
	Emit the given `Instruction` into the current section. More...

void	EmitBundleAlignMode (unsigned AlignPow2) override
	Set the bundle alignment mode from now on in the section. More...

void	EmitBundleLock (bool AlignToEnd) override
	The following instructions are a bundle-locked group. More...

void	EmitBundleUnlock () override
	Ends a bundle-locked group. More...

void	EmitBytes (StringRef Data) override
	Emit the bytes in `Data` into the output. More...

void	EmitValueToAlignment (unsigned ByteAlignment, int64_t Value=0, unsigned ValueSize=1, unsigned MaxBytesToEmit=0) override
	Emit some number of copies of `Value` until the byte alignment `ByteAlignment` is reached. More...

void	EmitCodeAlignment (unsigned ByteAlignment, unsigned MaxBytesToEmit=0) override
	Emit nops until the byte alignment `ByteAlignment` is reached. More...

void	emitValueToOffset (const MCExpr *Offset, unsigned char Value, SMLoc Loc) override
	Emit some number of copies of `Value` until the byte offset `Offset` is reached. More...

void	EmitCodePaddingBasicBlockStart (const MCCodePaddingContext &Context) override

void	EmitCodePaddingBasicBlockEnd (const MCCodePaddingContext &Context) override

void	EmitDwarfLocDirective (unsigned FileNo, unsigned Line, unsigned Column, unsigned Flags, unsigned Isa, unsigned Discriminator, StringRef FileName) override
	This implements the DWARF2 '.loc fileno lineno ...' assembler directive. More...

void	EmitDwarfAdvanceLineAddr (int64_t LineDelta, const MCSymbol LastLabel, const MCSymbol Label, unsigned PointerSize)

void	EmitDwarfAdvanceFrameAddr (const MCSymbol LastLabel, const MCSymbol Label)

void	EmitCVLocDirective (unsigned FunctionId, unsigned FileNo, unsigned Line, unsigned Column, bool PrologueEnd, bool IsStmt, StringRef FileName, SMLoc Loc) override
	This implements the CodeView '.cv_loc' assembler directive. More...

void	EmitCVLinetableDirective (unsigned FunctionId, const MCSymbol Begin, const MCSymbol End) override
	This implements the CodeView '.cv_linetable' assembler directive. More...

void	EmitCVInlineLinetableDirective (unsigned PrimaryFunctionId, unsigned SourceFileId, unsigned SourceLineNum, const MCSymbol FnStartSym, const MCSymbol FnEndSym) override
	This implements the CodeView '.cv_inline_linetable' assembler directive. More...

void	EmitCVDefRangeDirective (ArrayRef< std::pair< const MCSymbol , const MCSymbol >> Ranges, StringRef FixedSizePortion) override
	This implements the CodeView '.cv_def_range' assembler directive. More...

void	EmitCVStringTableDirective () override
	This implements the CodeView '.cv_stringtable' assembler directive. More...

void	EmitCVFileChecksumsDirective () override
	This implements the CodeView '.cv_filechecksums' assembler directive. More...

void	EmitCVFileChecksumOffsetDirective (unsigned FileNo) override
	This implements the CodeView '.cv_filechecksumoffset' assembler directive. More...

void	EmitDTPRel32Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a dtprel (32-bit DTP relative) value. More...

void	EmitDTPRel64Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a dtprel (64-bit DTP relative) value. More...

void	EmitTPRel32Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a tprel (32-bit TP relative) value. More...

void	EmitTPRel64Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a tprel (64-bit TP relative) value. More...

void	EmitGPRel32Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a gprel32 (32-bit GP relative) value. More...

void	EmitGPRel64Value (const MCExpr *Value) override
	Emit the expression `Value` into the output as a gprel64 (64-bit GP relative) value. More...

bool	EmitRelocDirective (const MCExpr &Offset, StringRef Name, const MCExpr *Expr, SMLoc Loc, const MCSubtargetInfo &STI) override
	Emit a .reloc directive. More...

void	emitFill (const MCExpr &NumBytes, uint64_t FillValue, SMLoc Loc=SMLoc()) override
	Emit `Size` bytes worth of the value specified by `FillValue`. More...

void	emitFill (const MCExpr &NumValues, int64_t Size, int64_t Expr, SMLoc Loc=SMLoc()) override
	Emit `NumValues` copies of `Size` bytes. More...

void	EmitFileDirective (StringRef Filename) override
	Switch to a new logical file. More...

void	EmitAddrsig () override

void	EmitAddrsigSym (const MCSymbol *Sym) override

void	FinishImpl () override
	Streamer specific finalization. More...

void	emitAbsoluteSymbolDiff (const MCSymbol Hi, const MCSymbol Lo, unsigned Size) override
	Emit the absolute difference between two symbols if possible. More...

void	emitAbsoluteSymbolDiffAsULEB128 (const MCSymbol Hi, const MCSymbol Lo) override
	Emit the absolute difference between two symbols encoded with ULEB128. More...

bool	mayHaveInstructions (MCSection &Sec) const override

Public Member Functions inherited from llvm::MCStreamer
	MCStreamer (const MCStreamer &)=delete

MCStreamer &	operator= (const MCStreamer &)=delete

virtual	~MCStreamer ()

void	visitUsedExpr (const MCExpr &Expr)

void	setTargetStreamer (MCTargetStreamer *TS)

MCContext &	getContext () const

void	setUseAssemblerInfoForParsing (bool v)

bool	getUseAssemblerInfoForParsing ()

MCTargetStreamer *	getTargetStreamer ()

WinEH::FrameInfo *	EnsureValidWinFrameInfo (SMLoc Loc)
	Retreive the current frame info if one is available and it is not yet closed. More...

unsigned	getNumFrameInfos ()

ArrayRef< MCDwarfFrameInfo >	getDwarfFrameInfos () const

bool	hasUnfinishedDwarfFrameInfo ()

unsigned	getNumWinFrameInfos ()

ArrayRef< std::unique_ptr< WinEH::FrameInfo > >	getWinFrameInfos () const

void	generateCompactUnwindEncodings (MCAsmBackend *MAB)

unsigned	EmitDwarfFileDirective (unsigned FileNo, StringRef Directory, StringRef Filename, MD5::MD5Result *Checksum=nullptr, Optional< StringRef > Source=None, unsigned CUID=0)
	Associate a filename with a specified logical file number. More...

virtual Expected< unsigned >	tryEmitDwarfFileDirective (unsigned FileNo, StringRef Directory, StringRef Filename, MD5::MD5Result *Checksum=nullptr, Optional< StringRef > Source=None, unsigned CUID=0)
	Associate a filename with a specified logical file number. More...

virtual void	emitDwarfFile0Directive (StringRef Directory, StringRef Filename, MD5::MD5Result *Checksum, Optional< StringRef > Source, unsigned CUID=0)
	Specify the "root" file of the compilation, using the ".file 0" extension. More...

virtual void	EmitCFIBKeyFrame ()

virtual bool	EmitCVFileDirective (unsigned FileNo, StringRef Filename, ArrayRef< uint8_t > Checksum, unsigned ChecksumKind)
	Associate a filename with a specified logical file number, and also specify that file's checksum information. More...

virtual bool	EmitCVFuncIdDirective (unsigned FunctionId)
	Introduces a function id for use with .cv_loc. More...

virtual bool	EmitCVInlineSiteIdDirective (unsigned FunctionId, unsigned IAFunc, unsigned IAFile, unsigned IALine, unsigned IACol, SMLoc Loc)
	Introduces an inline call site id for use with .cv_loc. More...

virtual void	EmitCVFPOData (const MCSymbol *ProcSym, SMLoc Loc={})
	This implements the CodeView '.cv_fpo_data' assembler directive. More...

virtual MCSymbol *	getDwarfLineTableSymbol (unsigned CUID)

void	EmitCFIStartProc (bool IsSimple, SMLoc Loc=SMLoc())

void	EmitCFIEndProc ()

virtual void	EmitCFIDefCfa (int64_t Register, int64_t Offset)

virtual void	EmitCFIDefCfaOffset (int64_t Offset)

virtual void	EmitCFIDefCfaRegister (int64_t Register)

virtual void	EmitCFIOffset (int64_t Register, int64_t Offset)

virtual void	EmitCFIPersonality (const MCSymbol *Sym, unsigned Encoding)

virtual void	EmitCFILsda (const MCSymbol *Sym, unsigned Encoding)

virtual void	EmitCFIRememberState ()

virtual void	EmitCFIRestoreState ()

virtual void	EmitCFISameValue (int64_t Register)

virtual void	EmitCFIRestore (int64_t Register)

virtual void	EmitCFIRelOffset (int64_t Register, int64_t Offset)

virtual void	EmitCFIAdjustCfaOffset (int64_t Adjustment)

virtual void	EmitCFIEscape (StringRef Values)

virtual void	EmitCFIReturnColumn (int64_t Register)

virtual void	EmitCFIGnuArgsSize (int64_t Size)

virtual void	EmitCFISignalFrame ()

virtual void	EmitCFIUndefined (int64_t Register)

virtual void	EmitCFIRegister (int64_t Register1, int64_t Register2)

virtual void	EmitCFIWindowSave ()

virtual void	EmitCFINegateRAState ()

virtual void	EmitWinCFIStartProc (const MCSymbol *Symbol, SMLoc Loc=SMLoc())

virtual void	EmitWinCFIEndProc (SMLoc Loc=SMLoc())

virtual void	EmitWinCFIFuncletOrFuncEnd (SMLoc Loc=SMLoc())
	This is used on platforms, such as Windows on ARM64, that require function or funclet sizes to be emitted in .xdata before the End marker is emitted for the frame. More...

virtual void	EmitWinCFIStartChained (SMLoc Loc=SMLoc())

virtual void	EmitWinCFIEndChained (SMLoc Loc=SMLoc())

virtual void	EmitWinCFIPushReg (unsigned Register, SMLoc Loc=SMLoc())

virtual void	EmitWinCFISetFrame (unsigned Register, unsigned Offset, SMLoc Loc=SMLoc())

virtual void	EmitWinCFIAllocStack (unsigned Size, SMLoc Loc=SMLoc())

virtual void	EmitWinCFISaveReg (unsigned Register, unsigned Offset, SMLoc Loc=SMLoc())

virtual void	EmitWinCFISaveXMM (unsigned Register, unsigned Offset, SMLoc Loc=SMLoc())

virtual void	EmitWinCFIPushFrame (bool Code, SMLoc Loc=SMLoc())

virtual void	EmitWinCFIEndProlog (SMLoc Loc=SMLoc())

virtual void	EmitWinEHHandler (const MCSymbol *Sym, bool Unwind, bool Except, SMLoc Loc=SMLoc())

virtual void	EmitWinEHHandlerData (SMLoc Loc=SMLoc())

MCSection *	getAssociatedPDataSection (const MCSection *TextSec)
	Get the .pdata section used for the given section. More...

MCSection *	getAssociatedXDataSection (const MCSection *TextSec)
	Get the .xdata section used for the given section. More...

virtual void	EmitSyntaxDirective ()

void	EmitRawText (const Twine &String)
	If this file is backed by a assembly streamer, this dumps the specified string in the output .s file. More...

void	Finish ()
	Finish emission of machine code. More...

virtual bool	isVerboseAsm () const
	Return true if this streamer supports verbose assembly and if it is enabled. More...

virtual bool	hasRawTextSupport () const
	Return true if this asm streamer supports emitting unformatted text to the .s file with EmitRawText. More...

virtual void	AddComment (const Twine &T, bool EOL=true)
	Add a textual comment. More...

virtual raw_ostream &	GetCommentOS ()
	Return a raw_ostream that comments can be written to. More...

virtual void	emitRawComment (const Twine &T, bool TabPrefix=true)
	Print T and prefix it with the comment string (normally #) and optionally a tab. More...

virtual void	addExplicitComment (const Twine &T)
	Add explicit comment T. More...

virtual void	emitExplicitComments ()
	Emit added explicit comments. More...

virtual void	AddBlankLine ()
	AddBlankLine - Emit a blank line to a .s file to pretty it up. More...

MCSectionSubPair	getCurrentSection () const
	Return the current section that the streamer is emitting code to. More...

MCSection *	getCurrentSectionOnly () const

MCSectionSubPair	getPreviousSection () const
	Return the previous section that the streamer is emitting code to. More...

unsigned	GetSymbolOrder (const MCSymbol *Sym) const
	Returns an index to represent the order a symbol was emitted in. More...

void	PushSection ()
	Save the current and previous section on the section stack. More...

bool	PopSection ()
	Restore the current and previous section from the section stack. More...

bool	SubSection (const MCExpr *Subsection)

virtual void	SwitchSection (MCSection Section, const MCExpr Subsection=nullptr)
	Set the current section where code is being emitted to `Section`. More...

void	SwitchSectionNoChange (MCSection Section, const MCExpr Subsection=nullptr)
	Set the current section where code is being emitted to `Section`. More...

MCSymbol *	endSection (MCSection *Section)

void	AssignFragment (MCSymbol Symbol, MCFragment Fragment)
	Sets the symbol's section. More...

virtual void	EmitEHSymAttributes (const MCSymbol Symbol, MCSymbol EHSymbol)

virtual void	EmitLinkerOptions (ArrayRef< std::string > Kind)
	Emit the given list `Options` of strings as linker options into the output. More...

virtual void	EmitDataRegion (MCDataRegionType Kind)
	Note in the output the specified region `Kind`. More...

virtual void	EmitVersionMin (MCVersionMinType Type, unsigned Major, unsigned Minor, unsigned Update, VersionTuple SDKVersion)
	Specify the Mach-O minimum deployment target version. More...

virtual void	EmitBuildVersion (unsigned Platform, unsigned Major, unsigned Minor, unsigned Update, VersionTuple SDKVersion)
	Emit/Specify Mach-O build version command. More...

void	EmitVersionForTarget (const Triple &Target, const VersionTuple &SDKVersion)

virtual void	BeginCOFFSymbolDef (const MCSymbol *Symbol)
	Start emitting COFF symbol definition. More...

virtual void	EmitCOFFSymbolStorageClass (int StorageClass)
	Emit the storage class of the symbol. More...

virtual void	EmitCOFFSymbolType (int Type)
	Emit the type of the symbol. More...

virtual void	EndCOFFSymbolDef ()
	Marks the end of the symbol definition. More...

virtual void	EmitCOFFSafeSEH (MCSymbol const *Symbol)

virtual void	EmitCOFFSymbolIndex (MCSymbol const *Symbol)
	Emits the symbol table index of a Symbol into the current section. More...

virtual void	EmitCOFFSectionIndex (MCSymbol const *Symbol)
	Emits a COFF section index. More...

virtual void	EmitCOFFSecRel32 (MCSymbol const *Symbol, uint64_t Offset)
	Emits a COFF section relative relocation. More...

virtual void	EmitCOFFImgRel32 (MCSymbol const *Symbol, int64_t Offset)
	Emits a COFF image relative relocation. More...

virtual void	EmitLOHDirective (MCLOHType Kind, const MCLOHArgs &Args)
	Emit a Linker Optimization Hint (LOH) directive. More...

virtual void	EmitBinaryData (StringRef Data)
	Functionally identical to EmitBytes. More...

void	EmitValue (const MCExpr *Value, unsigned Size, SMLoc Loc=SMLoc())

virtual void	EmitIntValue (uint64_t Value, unsigned Size)
	Special case of EmitValue that avoids the client having to pass in a MCExpr for constant integers. More...

void	EmitULEB128IntValue (uint64_t Value)
	Special case of EmitULEB128Value that avoids the client having to pass in a MCExpr for constant integers. More...

void	EmitSLEB128IntValue (int64_t Value)
	Special case of EmitSLEB128Value that avoids the client having to pass in a MCExpr for constant integers. More...

void	EmitSymbolValue (const MCSymbol *Sym, unsigned Size, bool IsSectionRelative=false)
	Special case of EmitValue that avoids the client having to pass in a MCExpr for MCSymbols. More...

void	emitFill (uint64_t NumBytes, uint8_t FillValue)
	Emit NumBytes bytes worth of the value specified by FillValue. More...

void	EmitZeros (uint64_t NumBytes)
	Emit NumBytes worth of zeros. More...

MCStreamer Interface
void	InitSections (bool NoExecStack) override
	Create the default sections and set the initial one. More...

void	ChangeSection (MCSection Section, const MCExpr Subsection) override
	Update streamer for a new active section. More...

void	EmitLabel (MCSymbol *Symbol, SMLoc Loc=SMLoc()) override
	Emit a label for `Symbol` into the current section. More...

void	EmitLabel (MCSymbol Symbol, SMLoc Loc, MCFragment F) override

void	EmitAssemblerFlag (MCAssemblerFlag Flag) override
	Note in the output the specified `Flag`. More...

void	EmitThumbFunc (MCSymbol *Func) override
	Note in the output that the specified `Func` is a Thumb mode function (ARM target only). More...

void	EmitWeakReference (MCSymbol Alias, const MCSymbol Symbol) override
	Emit an weak reference from `Alias` to `Symbol`. More...

bool	EmitSymbolAttribute (MCSymbol *Symbol, MCSymbolAttr Attribute) override
	Add the given `Attribute` to `Symbol`. More...

void	EmitSymbolDesc (MCSymbol *Symbol, unsigned DescValue) override
	Set the `DescValue` for the `Symbol`. More...

void	EmitCommonSymbol (MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override
	Emit a common symbol. More...

void	emitELFSize (MCSymbol Symbol, const MCExpr Value) override
	Emit an ELF .size directive. More...

void	emitELFSymverDirective (StringRef AliasName, const MCSymbol *Aliasee) override
	Emit an ELF .symver directive. More...

void	EmitLocalCommonSymbol (MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override
	Emit a local common (.lcomm) symbol. More...

void	EmitZerofill (MCSection Section, MCSymbol Symbol=nullptr, uint64_t Size=0, unsigned ByteAlignment=0, SMLoc L=SMLoc()) override
	Emit the zerofill section and an optional symbol. More...

void	EmitTBSSSymbol (MCSection Section, MCSymbol Symbol, uint64_t Size, unsigned ByteAlignment=0) override
	Emit a thread local bss (.tbss) symbol. More...

void	EmitValueImpl (const MCExpr *Value, unsigned Size, SMLoc Loc=SMLoc()) override
	Emit the expression `Value` into the output as a native integer of the given `Size` bytes. More...

void	EmitIdent (StringRef IdentString) override
	Emit the "identifiers" directive. More...

void	EmitValueToAlignment (unsigned, int64_t, unsigned, unsigned) override
	Emit some number of copies of `Value` until the byte alignment `ByteAlignment` is reached. More...

void	emitCGProfileEntry (const MCSymbolRefExpr From, const MCSymbolRefExpr To, uint64_t Count) override

void	FinishImpl () override
	Streamer specific finalization. More...

void	EmitBundleAlignMode (unsigned AlignPow2) override
	Set the bundle alignment mode from now on in the section. More...

void	EmitBundleLock (bool AlignToEnd) override
	The following instructions are a bundle-locked group. More...

void	EmitBundleUnlock () override
	Ends a bundle-locked group. More...

Additional Inherited Members
Protected Member Functions inherited from llvm::MCObjectStreamer
	MCObjectStreamer (MCContext &Context, std::unique_ptr< MCAsmBackend > TAB, std::unique_ptr< MCObjectWriter > OW, std::unique_ptr< MCCodeEmitter > Emitter)

	~MCObjectStreamer ()

bool	changeSectionImpl (MCSection Section, const MCExpr Subsection)

void	flushPendingLabels (MCFragment *F, uint64_t FOffset=0)
	If any labels have been emitted but not assigned fragments, ensure that they get assigned, either to F if possible or to a new data fragment. More...

Protected Member Functions inherited from llvm::MCStreamer
	MCStreamer (MCContext &Ctx)

WinEH::FrameInfo *	getCurrentWinFrameInfo ()

virtual void	EmitWindowsUnwindTables ()

virtual void	EmitRawTextImpl (StringRef String)
	EmitRawText - If this file is backed by an assembly streamer, this dumps the specified string in the output .s file. More...

bool	checkCVLocSection (unsigned FuncId, unsigned FileNo, SMLoc Loc)
	Returns true if the the .cv_loc directive is in the right section. More...

Detailed Description

Definition at line 24 of file MCELFStreamer.h.

Constructor & Destructor Documentation

◆ MCELFStreamer()

MCELFStreamer::MCELFStreamer	(	MCContext &	Context,
		std::unique_ptr< MCAsmBackend >	TAB,
		std::unique_ptr< MCObjectWriter >	OW,
		std::unique_ptr< MCCodeEmitter >	Emitter
	)

Definition at line 42 of file MCELFStreamer.cpp.

References llvm::SmallVectorImpl< T >::append(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::computeBundlePadding(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::MCObjectStreamer::flushPendingLabels(), llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getBundleAlignSize(), llvm::MCEncodedFragmentWithContents< ContentsSize >::getContents(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::MCEncodedFragmentWithFixups< ContentsSize, FixupsSize >::getFixups(), llvm::MCAssembler::getRelaxAll(), llvm::MCEncodedFragment::getSubtargetInfo(), llvm::MCSection::isBundleLocked(), llvm::MCAssembler::isBundlingEnabled(), llvm::report_fatal_error(), llvm::MCEncodedFragment::setBundlePadding(), llvm::MCEncodedFragment::setHasInstructions(), llvm::SmallVectorBase::size(), and llvm::MCAssembler::writeFragmentPadding().

Referenced by llvm::createELFStreamer().

◆ ~MCELFStreamer()

llvm::MCELFStreamer::~MCELFStreamer ( )

overridedefault

Member Function Documentation

◆ ChangeSection()

void MCELFStreamer::ChangeSection	(	MCSection *	,
		const MCExpr *
	)

overridevirtual

Update streamer for a new active section.

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

Reimplemented from llvm::MCStreamer.

Definition at line 146 of file MCELFStreamer.cpp.

References llvm::HexStyle::Asm, llvm::MCObjectStreamer::changeSectionImpl(), llvm::MCObjectStreamer::getAssembler(), llvm::MCSection::getBeginSymbol(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::MCAssembler::registerSymbol(), llvm::report_fatal_error(), llvm::ARMBuildAttrs::Section, and setSectionAlignmentForBundling().

Referenced by GetAEABIUnwindPersonalityName(), and reset().

◆ EmitAssemblerFlag()

void MCELFStreamer::EmitAssemblerFlag ( MCAssemblerFlag Flag )

overridevirtual

Note in the output the specified Flag.

Reimplemented from llvm::MCStreamer.

Definition at line 120 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getBackend(), llvm::MCAsmBackend::handleAssemblerFlag(), llvm_unreachable, llvm::MCAF_Code16, llvm::MCAF_Code32, llvm::MCAF_Code64, llvm::MCAF_SubsectionsViaSymbols, llvm::MCAF_SyntaxUnified, and llvm::MCAssembler::setSubsectionsViaSymbols().

Referenced by GetAEABIUnwindPersonalityName(), and reset().

◆ EmitBundleAlignMode()

void MCELFStreamer::EmitBundleAlignMode ( unsigned AlignPow2 )

overridevirtual

Set the bundle alignment mode from now on in the section.

The argument is the power of 2 to which the alignment is set. The value 0 means turn the bundle alignment off.

Reimplemented from llvm::MCStreamer.

Definition at line 601 of file MCELFStreamer.cpp.

References assert(), llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getBundleAlignSize(), llvm::report_fatal_error(), and llvm::MCAssembler::setBundleAlignSize().

Referenced by reset().

◆ EmitBundleLock()

void MCELFStreamer::EmitBundleLock ( bool AlignToEnd )

overridevirtual

The following instructions are a bundle-locked group.

Parameters

AlignToEnd - If true, the bundle-locked group will be aligned to the end of a bundle.

Reimplemented from llvm::MCStreamer.

Definition at line 611 of file MCELFStreamer.cpp.

References llvm::MCSection::BundleLocked, llvm::MCSection::BundleLockedAlignToEnd, llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::report_fatal_error(), llvm::MCSection::setBundleGroupBeforeFirstInst(), and llvm::MCSection::setBundleLockState().

Referenced by reset().

◆ EmitBundleUnlock()

void MCELFStreamer::EmitBundleUnlock ( )

overridevirtual

Ends a bundle-locked group.

Reimplemented from llvm::MCStreamer.

Definition at line 632 of file MCELFStreamer.cpp.

References assert(), llvm::MCSection::BundleLockedAlignToEnd, llvm::MCObjectStreamer::getAssembler(), llvm::MCSection::getBundleLockState(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::MCObjectStreamer::getOrCreateDataFragment(), llvm::MCAssembler::getRelaxAll(), llvm::MCSection::isBundleGroupBeforeFirstInst(), llvm::MCSection::NotBundleLocked, llvm::report_fatal_error(), llvm::MCEncodedFragment::setAlignToBundleEnd(), and llvm::MCSection::setBundleLockState().

Referenced by reset().

◆ emitCGProfileEntry()

void MCELFStreamer::emitCGProfileEntry	(	const MCSymbolRefExpr *	From,
		const MCSymbolRefExpr *	To,
		uint64_t	Count
	)

overridevirtual

Reimplemented from llvm::MCStreamer.

Definition at line 359 of file MCELFStreamer.cpp.

References llvm::MCAssembler::CGProfile, From, and llvm::MCObjectStreamer::getAssembler().

Referenced by reset().

◆ EmitCommonSymbol()

void MCELFStreamer::EmitCommonSymbol	(	MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment
	)

overridevirtual

Emit a common symbol.

Parameters

Symbol	- The common symbol to emit.
Size	- The size of the common symbol.
ByteAlignment	- The alignment of the symbol if non-zero. This must be a power of 2.

Implements llvm::MCStreamer.

Definition at line 285 of file MCELFStreamer.cpp.

References llvm::MCConstantExpr::create(), EmitLabel(), EmitValueToAlignment(), llvm::MCStreamer::EmitZeros(), llvm::MCSection::getAlignment(), llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getContext(), llvm::MCAssembler::getContext(), llvm::MCStreamer::getCurrentSection(), llvm::MCContext::getELFSection(), P, llvm::MCAssembler::registerSymbol(), llvm::report_fatal_error(), llvm::ARMBuildAttrs::Section, llvm::MCSection::setAlignment(), llvm::ELF::SHF_ALLOC, llvm::ELF::SHF_WRITE, llvm::ELF::SHT_NOBITS, llvm::ELF::STB_GLOBAL, llvm::ELF::STB_LOCAL, llvm::ELF::STT_OBJECT, llvm::MCStreamer::SwitchSection(), and llvm::ARMBuildAttrs::Symbol.

Referenced by EmitLocalCommonSymbol(), and reset().

◆ emitELFSize()

void MCELFStreamer::emitELFSize	(	MCSymbol *	Symbol,
		const MCExpr *	Value
	)

overridevirtual

Emit an ELF .size directive.

This corresponds to an assembler statement such as: .size symbol, expression

Reimplemented from llvm::MCStreamer.

Definition at line 322 of file MCELFStreamer.cpp.

References llvm::ARMBuildAttrs::Symbol.

Referenced by reset().

◆ emitELFSymverDirective()

void MCELFStreamer::emitELFSymverDirective	(	StringRef	AliasName,
		const MCSymbol *	Aliasee
	)

overridevirtual

Emit an ELF .symver directive.

This corresponds to an assembler statement such as: .symver _start, foo@SOME_VERSION

Parameters

AliasName	- The versioned alias (i.e. "foo@@SOME_VERSION")
Aliasee	- The aliased symbol (i.e. "_start")

Reimplemented from llvm::MCStreamer.

Definition at line 326 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), and llvm::MCAssembler::Symvers.

Referenced by reset().

◆ EmitIdent()

void MCELFStreamer::EmitIdent ( StringRef IdentString )

overridevirtual

Emit the "identifiers" directive.

This implements the '.ident "version foo"' assembler directive.

Reimplemented from llvm::MCStreamer.

Definition at line 365 of file MCELFStreamer.cpp.

Referenced by reset().

◆ EmitLabel() [1/2]

void MCELFStreamer::EmitLabel	(	MCSymbol *	Symbol,
		SMLoc	Loc = `SMLoc()`
	)

overridevirtual

Emit a label for Symbol into the current section.

This corresponds to an assembler statement such as: foo:

Parameters

Symbol - The symbol to emit. A given symbol should only be emitted as a label once, and symbols emitted as a label should never be used in an assignment.

Reimplemented from llvm::MCStreamer.

Reimplemented in llvm::MipsELFStreamer.

Definition at line 100 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitLabel(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::MCSectionELF::getFlags(), llvm::ARMBuildAttrs::Section, llvm::ELF::SHF_TLS, llvm::ELF::STT_TLS, and llvm::ARMBuildAttrs::Symbol.

Referenced by llvm::MipsELFStreamer::EmitCFIEndProcImpl(), llvm::MipsELFStreamer::EmitCFILabel(), llvm::MipsELFStreamer::EmitCFIStartProcImpl(), EmitCommonSymbol(), llvm::AMDGPUTargetELFStreamer::EmitHSAMetadata(), llvm::AMDGPUTargetELFStreamer::EmitISAVersion(), llvm::MipsELFStreamer::EmitLabel(), llvm::HexagonMCELFStreamer::HexagonMCEmitCommonSymbol(), and reset().

◆ EmitLabel() [2/2]

void MCELFStreamer::EmitLabel	(	MCSymbol *	Symbol,
		SMLoc	Loc,
		MCFragment *	F
	)

overridevirtual

Reimplemented from llvm::MCObjectStreamer.

Definition at line 110 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitLabel(), llvm::MCStreamer::getCurrentSectionOnly(), llvm::MCSectionELF::getFlags(), llvm::ARMBuildAttrs::Section, llvm::ELF::SHF_TLS, llvm::ELF::STT_TLS, and llvm::ARMBuildAttrs::Symbol.

◆ EmitLocalCommonSymbol()

void MCELFStreamer::EmitLocalCommonSymbol	(	MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment
	)

overridevirtual

Emit a local common (.lcomm) symbol.

Parameters

Symbol	- The common symbol to emit.
Size	- The size of the common symbol.
ByteAlignment	- The alignment of the common symbol in bytes.

Reimplemented from llvm::MCStreamer.

Definition at line 331 of file MCELFStreamer.cpp.

References EmitCommonSymbol(), llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::registerSymbol(), llvm::ELF::STB_LOCAL, and llvm::ARMBuildAttrs::Symbol.

Referenced by reset().

◆ EmitSymbolAttribute()

bool MCELFStreamer::EmitSymbolAttribute	(	MCSymbol *	Symbol,
		MCSymbolAttr	Attribute
	)

overridevirtual

Add the given Attribute to Symbol.

Implements llvm::MCStreamer.

Definition at line 190 of file MCELFStreamer.cpp.

References CombineSymbolTypes(), llvm::MCObjectStreamer::getAssembler(), llvm_unreachable, llvm::MCSA_AltEntry, llvm::MCSA_ELF_TypeCommon, llvm::MCSA_ELF_TypeFunction, llvm::MCSA_ELF_TypeGnuUniqueObject, llvm::MCSA_ELF_TypeIndFunction, llvm::MCSA_ELF_TypeNoType, llvm::MCSA_ELF_TypeObject, llvm::MCSA_ELF_TypeTLS, llvm::MCSA_Global, llvm::MCSA_Hidden, llvm::MCSA_IndirectSymbol, llvm::MCSA_Internal, llvm::MCSA_Invalid, llvm::MCSA_LazyReference, llvm::MCSA_Local, llvm::MCSA_NoDeadStrip, llvm::MCSA_PrivateExtern, llvm::MCSA_Protected, llvm::MCSA_Reference, llvm::MCSA_SymbolResolver, llvm::MCSA_Weak, llvm::MCSA_WeakDefAutoPrivate, llvm::MCSA_WeakDefinition, llvm::MCSA_WeakReference, llvm::MCAssembler::registerSymbol(), llvm::ELF::STB_GLOBAL, llvm::ELF::STB_GNU_UNIQUE, llvm::ELF::STB_LOCAL, llvm::ELF::STB_WEAK, llvm::ELF::STT_FUNC, llvm::ELF::STT_GNU_IFUNC, llvm::ELF::STT_NOTYPE, llvm::ELF::STT_OBJECT, llvm::ELF::STT_TLS, llvm::ELF::STV_HIDDEN, llvm::ELF::STV_INTERNAL, llvm::ELF::STV_PROTECTED, and llvm::ARMBuildAttrs::Symbol.

Referenced by reset().

◆ EmitSymbolDesc()

void MCELFStreamer::EmitSymbolDesc	(	MCSymbol *	Symbol,
		unsigned	DescValue
	)

overridevirtual

Set the DescValue for the Symbol.

Parameters

Symbol	- The symbol to have its n_desc field set.
DescValue	- The value to set into the n_desc field.

Reimplemented from llvm::MCStreamer.

Definition at line 681 of file MCELFStreamer.cpp.

References llvm_unreachable.

Referenced by reset().

◆ EmitTBSSSymbol()

void MCELFStreamer::EmitTBSSSymbol	(	MCSection *	Section,
		MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment = `0`
	)

overridevirtual

Emit a thread local bss (.tbss) symbol.

Parameters

Section	- The thread local common section.
Symbol	- The thread local common symbol to emit.
Size	- The size of the symbol.
ByteAlignment	- The alignment of the thread local common symbol if non-zero. This must be a power of 2 on some targets.

Reimplemented from llvm::MCStreamer.

Definition at line 691 of file MCELFStreamer.cpp.

References llvm_unreachable.

Referenced by reset().

◆ EmitThumbFunc()

void MCELFStreamer::EmitThumbFunc ( MCSymbol * Func )

overridevirtual

Note in the output that the specified Func is a Thumb mode function (ARM target only).

Reimplemented from llvm::MCStreamer.

Definition at line 677 of file MCELFStreamer.cpp.

References llvm_unreachable.

Referenced by reset().

◆ EmitValueImpl()

void MCELFStreamer::EmitValueImpl	(	const MCExpr *	Value,
		unsigned	Size,
		SMLoc	Loc = `SMLoc()`
	)

overridevirtual

Emit the expression Value into the output as a native integer of the given Size bytes.

This is used to implement assembler directives such as .word, .quad, etc.

Parameters

Value	- The value to emit.
Size	- The size of the integer (in bytes) to emit. This must match a native machine width.
Loc	- The location of the expression for error reporting.

Reimplemented from llvm::MCStreamer.

Reimplemented in llvm::MipsELFStreamer.

Definition at line 341 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitValueImpl(), and llvm::report_fatal_error().

Referenced by llvm::MipsELFStreamer::EmitValueImpl(), GetAEABIUnwindPersonalityName(), and reset().

◆ EmitValueToAlignment()

void MCELFStreamer::EmitValueToAlignment	(	unsigned	ByteAlignment,
		int64_t	Value,
		unsigned	ValueSize,
		unsigned	MaxBytesToEmit
	)

overridevirtual

Emit some number of copies of Value until the byte alignment ByteAlignment is reached.

If the number of bytes need to emit for the alignment is not a multiple of ValueSize, then the contents of the emitted fill bytes is undefined.

This used to implement the .align assembler directive.

Parameters

ByteAlignment	- The alignment to reach. This must be a power of two on some targets.
Value	- The value to use when filling bytes.
ValueSize	- The size of the integer (in bytes) to emit for `Value`. This must match a native machine width.
MaxBytesToEmit	- The maximum numbers of bytes to emit, or 0. If the alignment cannot be reached in this many bytes, no bytes are emitted.

Reimplemented from llvm::MCStreamer.

Definition at line 349 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitValueToAlignment(), and llvm::report_fatal_error().

Referenced by EmitCommonSymbol(), llvm::HexagonMCELFStreamer::HexagonMCEmitCommonSymbol(), and reset().

◆ EmitWeakReference()

void MCELFStreamer::EmitWeakReference	(	MCSymbol *	Alias,
		const MCSymbol *	Symbol
	)

overridevirtual

Emit an weak reference from Alias to Symbol.

This corresponds to an assembler statement such as: .weakref alias, symbol

Parameters

Alias	- The alias that is being created.
Symbol	- The symbol being aliased.

Reimplemented from llvm::MCStreamer.

Definition at line 164 of file MCELFStreamer.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getContext(), llvm::MCAssembler::registerSymbol(), llvm::MCSymbol::setVariableValue(), and llvm::MCSymbolRefExpr::VK_WEAKREF.

Referenced by reset().

◆ EmitZerofill()

void MCELFStreamer::EmitZerofill	(	MCSection *	Section,
		MCSymbol *	Symbol = `nullptr`,
		uint64_t	Size = `0`,
		unsigned	ByteAlignment = `0`,
		SMLoc	Loc = `SMLoc()`
	)

overridevirtual

Emit the zerofill section and an optional symbol.

Parameters

Section	- The zerofill section to create and or to put the symbol
Symbol	- The zerofill symbol to emit, if non-NULL.
Size	- The size of the zerofill symbol.
ByteAlignment	- The alignment of the zerofill symbol if non-zero. This must be a power of 2 on some targets.

Implements llvm::MCStreamer.

Definition at line 685 of file MCELFStreamer.cpp.

References llvm_unreachable.

Referenced by reset().

◆ FinishImpl()

void MCELFStreamer::FinishImpl ( )

overridevirtual

Streamer specific finalization.

Reimplemented from llvm::MCStreamer.

Definition at line 666 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitFrames(), llvm::MCObjectStreamer::FinishImpl(), llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getCurrentSectionOnly(), and setSectionAlignmentForBundling().

Referenced by GetAEABIUnwindPersonalityName(), and reset().

◆ InitSections()

void MCELFStreamer::InitSections ( bool NoExecStack )

overridevirtual

Create the default sections and set the initial one.

Reimplemented from llvm::MCStreamer.

Definition at line 91 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitCodeAlignment(), llvm::MCContext::getAsmInfo(), llvm::MCStreamer::getContext(), llvm::MCAsmInfo::getNonexecutableStackSection(), llvm::MCContext::getObjectFileInfo(), llvm::MCObjectFileInfo::getTextSection(), and llvm::MCStreamer::SwitchSection().

Referenced by reset().

◆ reset()

void llvm::MCELFStreamer::reset ( )

inlineoverridevirtual

state management

Reimplemented from llvm::MCStreamer.

Definition at line 33 of file MCELFStreamer.h.

References llvm::LCOMM::ByteAlignment, ChangeSection(), Context, llvm::createARMELFStreamer(), EmitAssemblerFlag(), EmitBundleAlignMode(), EmitBundleLock(), EmitBundleUnlock(), emitCGProfileEntry(), EmitCommonSymbol(), emitELFSize(), emitELFSymverDirective(), EmitIdent(), EmitLabel(), EmitLocalCommonSymbol(), EmitSymbolAttribute(), EmitSymbolDesc(), EmitTBSSSymbol(), EmitThumbFunc(), EmitValueImpl(), EmitValueToAlignment(), EmitWeakReference(), EmitZerofill(), F(), FinishImpl(), From, InitSections(), llvm::MCObjectStreamer::reset(), llvm::ARMBuildAttrs::Section, Size, and llvm::ARMBuildAttrs::Symbol.

Referenced by GetAEABIUnwindPersonalityName().

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

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

Public Member Functions

MCStreamer Interface

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MCELFStreamer()

◆ ~MCELFStreamer()

Member Function Documentation

◆ ChangeSection()

◆ EmitAssemblerFlag()

◆ EmitBundleAlignMode()

◆ EmitBundleLock()

◆ EmitBundleUnlock()

◆ emitCGProfileEntry()

◆ EmitCommonSymbol()

◆ emitELFSize()

◆ emitELFSymverDirective()

◆ EmitIdent()

◆ EmitLabel() [1/2]

◆ EmitLabel() [2/2]

◆ EmitLocalCommonSymbol()

◆ EmitSymbolAttribute()

◆ EmitSymbolDesc()

◆ EmitTBSSSymbol()

◆ EmitThumbFunc()

◆ EmitValueImpl()

◆ EmitValueToAlignment()

◆ EmitWeakReference()

◆ EmitZerofill()

◆ FinishImpl()

◆ InitSections()

◆ reset()