#include <MCELFStreamer.h>

Inheritance diagram for llvm::MCELFStreamer:

Collaboration diagram for llvm::MCELFStreamer:

Classes
struct	LocalCommon
Public Member Functions
	MCELFStreamer (MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter *Emitter)
	MCELFStreamer (MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter Emitter, MCAssembler Assembler)
virtual	~MCELFStreamer ()
void	reset () override
	state management
MCStreamer Interface
void	InitSections () override
	Create the default sections and set the initial one.
void	ChangeSection (const MCSection Section, const MCExpr Subsection) override
void	EmitLabel (MCSymbol *Symbol) override
void	EmitAssemblerFlag (MCAssemblerFlag Flag) override
	EmitAssemblerFlag - Note in the output the specified `Flag`.
void	EmitThumbFunc (MCSymbol *Func) override
void	EmitWeakReference (MCSymbol Alias, const MCSymbol Symbol) override
bool	EmitSymbolAttribute (MCSymbol *Symbol, MCSymbolAttr Attribute) override
	EmitSymbolAttribute - Add the given `Attribute` to `Symbol`.
void	EmitSymbolDesc (MCSymbol *Symbol, unsigned DescValue) override
void	EmitCommonSymbol (MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override
void	BeginCOFFSymbolDef (const MCSymbol *Symbol) override
void	EmitCOFFSymbolStorageClass (int StorageClass) override
void	EmitCOFFSymbolType (int Type) override
void	EndCOFFSymbolDef () override
	EndCOFFSymbolDef - Marks the end of the symbol definition.
void	EmitELFSize (MCSymbol Symbol, const MCExpr Value) override
void	EmitLocalCommonSymbol (MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override
void	EmitZerofill (const MCSection Section, MCSymbol Symbol=nullptr, uint64_t Size=0, unsigned ByteAlignment=0) override
void	EmitTBSSSymbol (const MCSection Section, MCSymbol Symbol, uint64_t Size, unsigned ByteAlignment=0) override
void	EmitValueImpl (const MCExpr *Value, unsigned Size, const SMLoc &Loc=SMLoc()) override
void	EmitFileDirective (StringRef Filename) override
void	EmitIdent (StringRef IdentString) override
void	EmitValueToAlignment (unsigned, int64_t, unsigned, unsigned) override
void	Flush () override
	Flush - Causes any cached state to be written out.
void	FinishImpl () override
	FinishImpl - Streamer specific finalization.
void	EmitBundleAlignMode (unsigned AlignPow2) override
	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.
void	EmitBundleLock (bool AlignToEnd) override
	The following instructions are a bundle-locked group.
void	EmitBundleUnlock () override
	Ends a bundle-locked group.

Detailed Description

Definition at line 30 of file MCELFStreamer.h.

Constructor & Destructor Documentation

llvm::MCELFStreamer::MCELFStreamer	(	MCContext &	Context,
		MCAsmBackend &	TAB,
		raw_ostream &	OS,
		MCCodeEmitter *	Emitter
	)		`[inline]`

Definition at line 32 of file MCELFStreamer.h.

llvm::MCELFStreamer::MCELFStreamer	(	MCContext &	Context,
		MCAsmBackend &	TAB,
		raw_ostream &	OS,
		MCCodeEmitter *	Emitter,
		MCAssembler *	Assembler
	)		`[inline]`

Definition at line 37 of file MCELFStreamer.h.

MCELFStreamer::~MCELFStreamer ( ) [virtual]

Definition at line 38 of file MCELFStreamer.cpp.

Member Function Documentation

void MCELFStreamer::BeginCOFFSymbolDef ( const MCSymbol * Symbol ) [override, virtual]

BeginCOFFSymbolDef - Start emitting COFF symbol definition

Parameters:

Symbol - The symbol to have its External & Type fields set.

Reimplemented from llvm::MCStreamer.

Definition at line 563 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::ChangeSection	(	const MCSection *	,
		const MCExpr *
	)		`[override, virtual]`

ChangeSection - Update streamer for a new active section.

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

Reimplemented from llvm::MCObjectStreamer.

Definition at line 85 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), llvm::MCObjectStreamer::getCurrentSectionData(), llvm::MCAssembler::getOrCreateSymbolData(), llvm::MCSectionData::isBundleLocked(), llvm::report_fatal_error(), and llvm::ARMBuildAttrs::Section.

void MCELFStreamer::EmitAssemblerFlag ( MCAssemblerFlag Flag ) [override, virtual]

EmitAssemblerFlag - Note in the output the specified Flag.

Reimplemented from llvm::MCStreamer.

Definition at line 68 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().

void MCELFStreamer::EmitBundleAlignMode ( unsigned AlignPow2 ) [override, virtual]

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::MCObjectStreamer.

Definition at line 474 of file MCELFStreamer.cpp.

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

void MCELFStreamer::EmitBundleLock ( bool AlignToEnd ) [override, virtual]

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::MCObjectStreamer.

Definition at line 483 of file MCELFStreamer.cpp.

References llvm::MCSectionData::BundleLocked, llvm::MCSectionData::BundleLockedAlignToEnd, llvm::MCObjectStreamer::getAssembler(), llvm::MCObjectStreamer::getCurrentSectionData(), llvm::MCSectionData::isBundleLocked(), llvm::report_fatal_error(), llvm::MCSectionData::setBundleGroupBeforeFirstInst(), and llvm::MCSectionData::setBundleLockState().

void MCELFStreamer::EmitBundleUnlock ( ) [override, virtual]

Ends a bundle-locked group.

Reimplemented from llvm::MCObjectStreamer.

Definition at line 498 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), llvm::MCObjectStreamer::getCurrentSectionData(), llvm::MCSectionData::isBundleGroupBeforeFirstInst(), llvm::MCSectionData::isBundleLocked(), llvm::MCSectionData::NotBundleLocked, llvm::report_fatal_error(), and llvm::MCSectionData::setBundleLockState().

void MCELFStreamer::EmitCOFFSymbolStorageClass ( int StorageClass ) [override, virtual]

EmitCOFFSymbolStorageClass - Emit the storage class of the symbol.

Parameters:

StorageClass - The storage class the symbol should have.

Reimplemented from llvm::MCStreamer.

Definition at line 567 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EmitCOFFSymbolType ( int Type ) [override, virtual]

EmitCOFFSymbolType - Emit the type of the symbol.

Parameters:

Type	- A COFF type identifier (see COFF::SymbolType in X86COFF.h)

Reimplemented from llvm::MCStreamer.

Definition at line 571 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EmitCommonSymbol	(	MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment
	)		`[override, virtual]`

EmitCommonSymbol - 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 230 of file MCELFStreamer.cpp.

References llvm::MCStreamer::AssignSection(), llvm::SmallPtrSetImpl< PtrType >::count(), llvm::MCConstantExpr::Create(), llvm::ELF_STB_Local, llvm::MCObjectStreamer::getAssembler(), llvm::MCELF::GetBinding(), llvm::SectionKind::getBSS(), llvm::MCStreamer::getContext(), llvm::MCAssembler::getContext(), llvm::MCContext::getELFSection(), llvm::MCAssembler::getOrCreateSymbolData(), llvm::ARMBuildAttrs::Section, llvm::MCELF::SetBinding(), llvm::MCSymbolData::setCommon(), llvm::MCSymbolData::setExternal(), llvm::MCSymbolData::setSize(), llvm::MCELF::SetType(), llvm::ELF::SHF_ALLOC, llvm::ELF::SHF_WRITE, llvm::ELF::SHT_NOBITS, llvm::ELF::STB_GLOBAL, and llvm::ELF::STT_OBJECT.

Referenced by EmitLocalCommonSymbol().

void MCELFStreamer::EmitELFSize	(	MCSymbol *	Symbol,
		const MCExpr *	Value
	)		`[override, virtual]`

EmitELFSize - Emit an ELF .size directive.

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

Reimplemented from llvm::MCStreamer.

Definition at line 259 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getOrCreateSymbolData(), and llvm::MCSymbolData::setSize().

void MCELFStreamer::EmitFileDirective ( StringRef Filename ) [override, virtual]

EmitFileDirective - Switch to a new logical file. This is used to implement the '.file "foo.c"' assembler directive.

Reimplemented from llvm::MCStreamer.

Definition at line 295 of file MCELFStreamer.cpp.

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

void MCELFStreamer::EmitIdent ( StringRef IdentString ) [override, virtual]

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

Reimplemented from llvm::MCStreamer.

Definition at line 299 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::EmitBytes(), llvm::MCStreamer::EmitIntValue(), llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getContext(), llvm::MCContext::getELFSection(), llvm::SectionKind::getReadOnly(), llvm::MCStreamer::PopSection(), llvm::MCStreamer::PushSection(), llvm::ELF::SHF_MERGE, llvm::ELF::SHF_STRINGS, llvm::ELF::SHT_PROGBITS, and llvm::MCStreamer::SwitchSection().

void MCELFStreamer::EmitLabel ( MCSymbol * Symbol ) [override, virtual]

EmitLabel - 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::MCObjectStreamer.

Definition at line 56 of file MCELFStreamer.cpp.

References llvm::MCObjectStreamer::getAssembler(), llvm::MCSectionELF::getFlags(), llvm::MCSymbol::getSection(), llvm::MCAssembler::getSymbolData(), llvm::MCSymbol::isUndefined(), llvm::ARMBuildAttrs::Section, llvm::MCELF::SetType(), llvm::ELF::SHF_TLS, and llvm::ELF::STT_TLS.

void MCELFStreamer::EmitLocalCommonSymbol	(	MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment
	)		`[override, virtual]`

EmitLocalCommonSymbol - 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 264 of file MCELFStreamer.cpp.

References EmitCommonSymbol(), llvm::MCObjectStreamer::getAssembler(), llvm::MCAssembler::getOrCreateSymbolData(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::MCELF::SetBinding(), llvm::MCSymbolData::setExternal(), and llvm::ELF::STB_LOCAL.

bool MCELFStreamer::EmitSymbolAttribute	(	MCSymbol *	Symbol,
		MCSymbolAttr	Attribute
	)		`[override, virtual]`

EmitSymbolAttribute - Add the given Attribute to Symbol.

Implements llvm::MCStreamer.

Definition at line 123 of file MCELFStreamer.cpp.

References CombineSymbolTypes(), llvm::MCObjectStreamer::getAssembler(), llvm::MCObjectStreamer::getCurrentSectionData(), llvm::MCAssembler::getIndirectSymbols(), llvm::MCAssembler::getOrCreateSymbolData(), llvm::MCELF::GetType(), llvm::SmallPtrSetImpl< PtrType >::insert(), 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::IndirectSymbolData::SectionData, llvm::MCELF::SetBinding(), llvm::MCSymbolData::setExternal(), llvm::MCELF::SetType(), llvm::MCELF::SetVisibility(), llvm::ELF::STB_GLOBAL, 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, llvm::ARMBuildAttrs::Symbol, and llvm::IndirectSymbolData::Symbol.

void MCELFStreamer::EmitSymbolDesc	(	MCSymbol *	Symbol,
		unsigned	DescValue
	)		`[override, virtual]`

EmitSymbolDesc - 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 559 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EmitTBSSSymbol	(	const MCSection *	Section,
		MCSymbol *	Symbol,
		uint64_t	Size,
		unsigned	ByteAlignment = `0`
	)		`[override, virtual]`

EmitTBSSSymbol - 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 584 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EmitThumbFunc ( MCSymbol * Func ) [override, virtual]

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

Reimplemented from llvm::MCStreamer.

Definition at line 555 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EmitValueImpl	(	const MCExpr *	Value,
		unsigned	Size,
		const SMLoc &	Loc = `SMLoc()`
	)		`[override, virtual]`

EmitValue - 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::MCObjectStreamer.

Definition at line 274 of file MCELFStreamer.cpp.

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

void MCELFStreamer::EmitValueToAlignment	(	unsigned	ByteAlignment,
		int64_t	Value,
		unsigned	ValueSize,
		unsigned	MaxBytesToEmit
	)		`[override, virtual]`

EmitValueToAlignment - 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::MCObjectStreamer.

Definition at line 282 of file MCELFStreamer.cpp.

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

void MCELFStreamer::EmitWeakReference	(	MCSymbol *	Alias,
		const MCSymbol *	Symbol
	)		`[override, virtual]`

EmitWeakReference - 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::MCObjectStreamer.

Definition at line 96 of file MCELFStreamer.cpp.

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

void MCELFStreamer::EmitZerofill	(	const MCSection *	Section,
		MCSymbol *	Symbol = `nullptr`,
		uint64_t	Size = `0`,
		unsigned	ByteAlignment = `0`
	)		`[override, virtual]`

EmitZerofill - 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 579 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::EndCOFFSymbolDef ( ) [override, virtual]

EndCOFFSymbolDef - Marks the end of the symbol definition.

Reimplemented from llvm::MCStreamer.

Definition at line 575 of file MCELFStreamer.cpp.

References llvm_unreachable.

void MCELFStreamer::FinishImpl ( ) [override, virtual]

FinishImpl - Streamer specific finalization.

Reimplemented from llvm::MCObjectStreamer.

Definition at line 536 of file MCELFStreamer.cpp.