Symbol representation. More...

#include "llvm/ExecutionEngine/JITLink/JITLink.h"

Public Member Functions
	Symbol ()=default
	Create a null Symbol. More...

	Symbol (const Symbol &)=delete

Symbol &	operator= (const Symbol &)=delete

	Symbol (Symbol &&)=delete

Symbol &	operator= (Symbol &&)=delete

bool	hasName () const
	Returns true if this symbol has a name. More...

StringRef	getName () const
	Returns the name of this symbol (empty if the symbol is anonymous). More...

bool	isDefined () const
	Returns true if this Symbol has content (potentially) defined within this object file (i.e. More...

bool	isLive () const
	Returns true if this symbol is live (i.e. More...

void	setLive (bool IsLive)
	Set this symbol's live bit. More...

bool	isCallable () const
	Returns true is this symbol is callable. More...

void	setCallable (bool IsCallable)
	Set this symbol's callable bit. More...

bool	isExternal () const
	Returns true if the underlying addressable is an unresolved external. More...

bool	isAbsolute () const
	Returns true if the underlying addressable is an absolute symbol. More...

Addressable &	getAddressable ()
	Return the addressable that this symbol points to. More...

const Addressable &	getAddressable () const
	Return the addressable that thsi symbol points to. More...

Block &	getBlock ()
	Return the Block for this Symbol (Symbol must be defined). More...

const Block &	getBlock () const
	Return the Block for this Symbol (Symbol must be defined). More...

JITTargetAddress	getOffset () const
	Returns the offset for this symbol within the underlying addressable. More...

JITTargetAddress	getAddress () const
	Returns the address of this symbol. More...

JITTargetAddress	getSize () const
	Returns the size of this symbol. More...

bool	isSymbolZeroFill () const
	Returns true if this symbol is backed by a zero-fill block. More...

StringRef	getSymbolContent () const
	Returns the content in the underlying block covered by this symbol. More...

Linkage	getLinkage () const
	Get the linkage for this Symbol. More...

void	setLinkage (Linkage L)
	Set the linkage for this Symbol. More...

Scope	getScope () const
	Get the visibility for this Symbol. More...

void	setScope (Scope S)
	Set the visibility for this Symbol. More...

Friends
class	LinkGraph

Detailed Description

Symbol representation.

Symbols represent locations within Addressable objects. They can be either Named or Anonymous. Anonymous symbols have neither linkage nor visibility, and must point at ContentBlocks. Named symbols may be in one of four states:

Null: Default initialized. Assignable, but otherwise unusable.
Defined: Has both linkage and visibility and points to a ContentBlock
Common: Has both linkage and visibility, points to a null Addressable.
External: Has neither linkage nor visibility, points to an external Addressable.

Definition at line 282 of file JITLink.h.

Constructor & Destructor Documentation

◆ Symbol() [1/3]

llvm::jitlink::Symbol::Symbol ( )

default

Create a null Symbol.

This allows Symbols to be default initialized for use in containers (e.g. as map values). Null symbols are only useful for assigning to.

◆ Symbol() [2/3]

llvm::jitlink::Symbol::Symbol ( const Symbol & )

delete

◆ Symbol() [3/3]

llvm::jitlink::Symbol::Symbol ( Symbol && )

delete

Member Function Documentation

◆ getAddress()

JITTargetAddress llvm::jitlink::Symbol::getAddress ( ) const

inline

Returns the address of this symbol.

Definition at line 441 of file JITLink.h.

References llvm::jitlink::Addressable::getAddress().

Referenced by llvm::jitlink::MachOLinkGraphBuilder::findSymbolByAddress(), llvm::jitlink::MachOJITLinker_arm64::MachOJITLinker_arm64(), llvm::jitlink::MachOJITLinker_x86_64::MachOJITLinker_x86_64(), and llvm::jitlink::operator<<().

◆ getAddressable() [1/2]

Addressable& llvm::jitlink::Symbol::getAddressable ( )

inline

Return the addressable that this symbol points to.

Definition at line 412 of file JITLink.h.

References assert().

Referenced by llvm::jitlink::LinkGraph::makeExternal(), and llvm::jitlink::operator<<().

◆ getAddressable() [2/2]

const Addressable& llvm::jitlink::Symbol::getAddressable ( ) const

inline

Return the addressable that thsi symbol points to.

Definition at line 418 of file JITLink.h.

References assert().

◆ getBlock() [1/2]

Block& llvm::jitlink::Symbol::getBlock ( )

inline

Return the Block for this Symbol (Symbol must be defined).

Definition at line 424 of file JITLink.h.

References assert(), and llvm::jitlink::Addressable::isDefined().

Referenced by llvm::jitlink::MachOLinkGraphBuilder::MachOEHFrameBinaryParser::createFDERecord(), llvm::jitlink::LinkGraph::makeExternal(), llvm::jitlink::operator<<(), and llvm::jitlink::LinkGraph::removeDefinedSymbol().

◆ getBlock() [2/2]

const Block& llvm::jitlink::Symbol::getBlock ( ) const

inline

Return the Block for this Symbol (Symbol must be defined).

Definition at line 431 of file JITLink.h.

References assert(), and llvm::jitlink::Addressable::isDefined().

◆ getLinkage()

Linkage llvm::jitlink::Symbol::getLinkage ( ) const

inline

Get the linkage for this Symbol.

Definition at line 457 of file JITLink.h.

Referenced by llvm::jitlink::operator<<().

◆ getName()

StringRef llvm::jitlink::Symbol::getName ( ) const

inline

Returns the name of this symbol (empty if the symbol is anonymous).

Definition at line 370 of file JITLink.h.

References assert(), llvm::StringRef::empty(), llvm::jitlink::Local, and Name.

Referenced by llvm::jitlink::LinkGraph::findSectionByName(), llvm::jitlink::BasicGOTAndStubsBuilder< BuilderImpl >::getGOTEntrySymbol(), llvm::jitlink::BasicGOTAndStubsBuilder< BuilderImpl >::getStubSymbol(), and llvm::jitlink::operator<<().

◆ getOffset()

JITTargetAddress llvm::jitlink::Symbol::getOffset ( ) const

inline

Returns the offset for this symbol within the underlying addressable.

Definition at line 438 of file JITLink.h.

Referenced by llvm::jitlink::operator<<().

◆ getScope()

Scope llvm::jitlink::Symbol::getScope ( ) const

inline

Get the visibility for this Symbol.

Definition at line 467 of file JITLink.h.

Referenced by llvm::jitlink::operator<<().

◆ getSize()

JITTargetAddress llvm::jitlink::Symbol::getSize ( ) const

inline

Returns the size of this symbol.

Definition at line 444 of file JITLink.h.

References Size.

Referenced by llvm::jitlink::operator<<().

◆ getSymbolContent()

StringRef llvm::jitlink::Symbol::getSymbolContent ( ) const

inline

Returns the content in the underlying block covered by this symbol.

This method may only be called on defined non-zero-fill symbols.

Definition at line 452 of file JITLink.h.

References llvm::StringRef::substr().

◆ hasName()

bool llvm::jitlink::Symbol::hasName ( ) const

inline

Returns true if this symbol has a name.

Definition at line 367 of file JITLink.h.

References llvm::StringRef::empty().

Referenced by llvm::jitlink::BasicGOTAndStubsBuilder< BuilderImpl >::getGOTEntrySymbol(), and llvm::jitlink::BasicGOTAndStubsBuilder< BuilderImpl >::getStubSymbol().

◆ isAbsolute()

bool llvm::jitlink::Symbol::isAbsolute ( ) const

inline

Returns true if the underlying addressable is an absolute symbol.

Definition at line 406 of file JITLink.h.

References assert(), llvm::jitlink::Addressable::isAbsolute(), and llvm::jitlink::Addressable::isDefined().

Referenced by llvm::jitlink::LinkGraph::removeAbsoluteSymbol(), and llvm::jitlink::LinkGraph::removeExternalSymbol().

◆ isCallable()

bool llvm::jitlink::Symbol::isCallable ( ) const

inline

Returns true is this symbol is callable.

Definition at line 394 of file JITLink.h.

◆ isDefined()

bool llvm::jitlink::Symbol::isDefined ( ) const

inline

Returns true if this Symbol has content (potentially) defined within this object file (i.e.

is anything but an external or absolute symbol).

Definition at line 378 of file JITLink.h.

References assert(), and llvm::jitlink::Addressable::isDefined().

Referenced by llvm::jitlink::LinkGraph::makeExternal(), llvm::jitlink::operator<<(), llvm::jitlink::LinkGraph::removeAbsoluteSymbol(), llvm::jitlink::LinkGraph::removeDefinedSymbol(), and llvm::jitlink::LinkGraph::removeExternalSymbol().

◆ isExternal()

bool llvm::jitlink::Symbol::isExternal ( ) const

inline

Returns true if the underlying addressable is an unresolved external.

Definition at line 400 of file JITLink.h.

References assert(), llvm::jitlink::Addressable::isAbsolute(), and llvm::jitlink::Addressable::isDefined().

◆ isLive()

bool llvm::jitlink::Symbol::isLive ( ) const

inline

Returns true if this symbol is live (i.e.

should be treated as a root for dead stripping).

Definition at line 385 of file JITLink.h.

References assert().

Referenced by llvm::jitlink::operator<<().

◆ isSymbolZeroFill()

bool llvm::jitlink::Symbol::isSymbolZeroFill ( ) const

inline

Returns true if this symbol is backed by a zero-fill block.

This method may only be called on defined symbols.

Definition at line 448 of file JITLink.h.

◆ operator=() [1/2]

Symbol& llvm::jitlink::Symbol::operator= ( const Symbol & )

delete

◆ operator=() [2/2]

Symbol& llvm::jitlink::Symbol::operator= ( Symbol && )

delete

◆ setCallable()

void llvm::jitlink::Symbol::setCallable ( bool IsCallable )

inline

Set this symbol's callable bit.

Definition at line 397 of file JITLink.h.

◆ setLinkage()

void llvm::jitlink::Symbol::setLinkage ( Linkage L )

inline

Set the linkage for this Symbol.

Definition at line 460 of file JITLink.h.

References assert(), llvm::StringRef::empty(), llvm::jitlink::Addressable::isDefined(), and llvm::jitlink::Strong.

◆ setLive()

void llvm::jitlink::Symbol::setLive ( bool IsLive )

inline

Set this symbol's live bit.

Definition at line 391 of file JITLink.h.

◆ setScope()

void llvm::jitlink::Symbol::setScope ( Scope S )

inline

Set the visibility for this Symbol.

Definition at line 470 of file JITLink.h.

References A, assert(), llvm::jitlink::Default, E, llvm::jitlink::Addressable::isAbsolute(), llvm::jitlink::Addressable::isDefined(), Name, llvm::jitlink::operator<<(), llvm::jitlink::printEdge(), and llvm::jitlink::Strong.

Friends And Related Function Documentation

◆ LinkGraph

friend class LinkGraph

friend

Definition at line 283 of file JITLink.h.

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

include/llvm/ExecutionEngine/JITLink/JITLink.h

Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ Symbol() [1/3]

◆ Symbol() [2/3]

◆ Symbol() [3/3]

Member Function Documentation

◆ getAddress()

◆ getAddressable() [1/2]

◆ getAddressable() [2/2]

◆ getBlock() [1/2]

◆ getBlock() [2/2]

◆ getLinkage()

◆ getName()

◆ getOffset()

◆ getScope()

◆ getSize()

◆ getSymbolContent()

◆ hasName()

◆ isAbsolute()

◆ isCallable()

◆ isDefined()

◆ isExternal()

◆ isLive()

◆ isSymbolZeroFill()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ setCallable()

◆ setLinkage()

◆ setLive()

◆ setScope()

Friends And Related Function Documentation

◆ LinkGraph