llvm::RuntimeDyldELF Class Reference

#include "ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h"

Inheritance diagram for llvm::RuntimeDyldELF:

Public Member Functions
	RuntimeDyldELF (RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
	~RuntimeDyldELF () override
std::unique_ptr< RuntimeDyld::LoadedObjectInfo >	loadObject (const object::ObjectFile &O) override
void	resolveRelocation (const RelocationEntry &RE, uint64_t Value) override
	A object file specific relocation resolver.
Expected< relocation_iterator >	processRelocationRef (unsigned SectionID, relocation_iterator RelI, const ObjectFile &Obj, ObjSectionToIDMap &ObjSectionToID, StubMap &Stubs) override
	Parses one or more object file relocations (some object files use relocation pairs) and stores it to Relocations or SymbolRelocations (this depends on the object file type).
bool	isCompatibleFile (const object::ObjectFile &Obj) const override
void	registerEHFrames () override
Error	finalizeLoad (const ObjectFile &Obj, ObjSectionToIDMap &SectionMap) override
Public Member Functions inherited from llvm::RuntimeDyldImpl
	RuntimeDyldImpl (RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
virtual	~RuntimeDyldImpl ()
void	setProcessAllSections (bool ProcessAllSections)
virtual std::unique_ptr< RuntimeDyld::LoadedObjectInfo >	loadObject (const object::ObjectFile &Obj)=0
uint64_t	getSectionLoadAddress (unsigned SectionID) const
uint8_t *	getSectionAddress (unsigned SectionID) const
StringRef	getSectionContent (unsigned SectionID) const
uint8_t *	getSymbolLocalAddress (StringRef Name) const
unsigned	getSymbolSectionID (StringRef Name) const
JITEvaluatedSymbol	getSymbol (StringRef Name) const
std::map< StringRef, JITEvaluatedSymbol >	getSymbolTable () const
void	resolveRelocations ()
void	resolveLocalRelocations ()
void	reassignSectionAddress (unsigned SectionID, uint64_t Addr)
void	mapSectionAddress (const void *LocalAddress, uint64_t TargetAddress)
bool	hasError ()
void	clearError ()
StringRef	getErrorString ()
virtual bool	isCompatibleFile (const ObjectFile &Obj) const =0
void	setNotifyStubEmitted (NotifyStubEmittedFunction NotifyStubEmitted)
virtual void	registerEHFrames ()
void	deregisterEHFrames ()
virtual Error	finalizeLoad (const ObjectFile &ObjImg, ObjSectionToIDMap &SectionMap)

Static Public Member Functions
static std::unique_ptr< RuntimeDyldELF >	create (Triple::ArchType Arch, RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
Static Public Member Functions inherited from llvm::RuntimeDyldImpl
static void	finalizeAsync (std::unique_ptr< RuntimeDyldImpl > This, unique_function< void(object::OwningBinary< object::ObjectFile >, std::unique_ptr< RuntimeDyld::LoadedObjectInfo >, Error)> OnEmitted, object::OwningBinary< object::ObjectFile > O, std::unique_ptr< RuntimeDyld::LoadedObjectInfo > Info)

Protected Member Functions
size_t	getGOTEntrySize () override
Protected Member Functions inherited from llvm::RuntimeDyldImpl
virtual unsigned	getMaxStubSize () const =0
virtual Align	getStubAlignment ()=0
void	writeInt16BE (uint8_t *Addr, uint16_t Value)
void	writeInt32BE (uint8_t *Addr, uint32_t Value)
void	writeInt64BE (uint8_t *Addr, uint64_t Value)
virtual void	setMipsABI (const ObjectFile &Obj)
uint64_t	readBytesUnaligned (uint8_t *Src, unsigned Size) const
	Endian-aware read Read the least significant Size bytes from Src.
void	writeBytesUnaligned (uint64_t Value, uint8_t *Dst, unsigned Size) const
	Endian-aware write.
virtual Expected< JITSymbolFlags >	getJITSymbolFlags (const SymbolRef &Sym)
	Generate JITSymbolFlags from a libObject symbol.
virtual uint64_t	modifyAddressBasedOnFlags (uint64_t Addr, JITSymbolFlags Flags) const
	Modify the given target address based on the given symbol flags.
Error	emitCommonSymbols (const ObjectFile &Obj, CommonSymbolList &CommonSymbols, uint64_t CommonSize, uint32_t CommonAlign)
	Given the common symbols discovered in the object file, emit a new section for them and update the symbol mappings in the object and symbol table.
Expected< unsigned >	emitSection (const ObjectFile &Obj, const SectionRef &Section, bool IsCode)
	Emits section data from the object file to the MemoryManager.
Expected< unsigned >	findOrEmitSection (const ObjectFile &Obj, const SectionRef &Section, bool IsCode, ObjSectionToIDMap &LocalSections)
	Find Section in LocalSections.
void	addRelocationForSection (const RelocationEntry &RE, unsigned SectionID)
void	addRelocationForSymbol (const RelocationEntry &RE, StringRef SymbolName)
uint8_t *	createStubFunction (uint8_t *Addr, unsigned AbiVariant=0)
	Emits long jump instruction to Addr.
void	resolveRelocationList (const RelocationList &Relocs, uint64_t Value)
	Resolves relocations from Relocs list with address from Value.
virtual void	resolveRelocation (const RelocationEntry &RE, uint64_t Value)=0
	A object file specific relocation resolver.
virtual Expected< relocation_iterator >	processRelocationRef (unsigned SectionID, relocation_iterator RelI, const ObjectFile &Obj, ObjSectionToIDMap &ObjSectionToID, StubMap &Stubs)=0
	Parses one or more object file relocations (some object files use relocation pairs) and stores it to Relocations or SymbolRelocations (this depends on the object file type).
void	applyExternalSymbolRelocations (const StringMap< JITEvaluatedSymbol > ExternalSymbolMap)
Error	resolveExternalSymbols ()
	Resolve relocations to external symbols.
Error	computeTotalAllocSize (const ObjectFile &Obj, uint64_t &CodeSize, Align &CodeAlign, uint64_t &RODataSize, Align &RODataAlign, uint64_t &RWDataSize, Align &RWDataAlign)
unsigned	computeGOTSize (const ObjectFile &Obj)
unsigned	computeSectionStubBufSize (const ObjectFile &Obj, const SectionRef &Section)
Expected< ObjSectionToIDMap >	loadObjectImpl (const object::ObjectFile &Obj)
virtual size_t	getGOTEntrySize ()
virtual void	processNewSymbol (const SymbolRef &ObjSymbol, SymbolTableEntry &Entry)
virtual bool	relocationNeedsGot (const RelocationRef &R) const
virtual bool	relocationNeedsStub (const RelocationRef &R) const

Protected Attributes
DenseMap< SID, SID >	SectionToGOTMap
Protected Attributes inherited from llvm::RuntimeDyldImpl
RuntimeDyld::MemoryManager &	MemMgr
JITSymbolResolver &	Resolver
SectionList	Sections
RTDyldSymbolTable	GlobalSymbolTable
std::unordered_map< unsigned, RelocationList >	Relocations
StringMap< RelocationList >	ExternalSymbolRelocations
Triple::ArchType	Arch
bool	IsTargetLittleEndian
bool	IsMipsO32ABI
bool	IsMipsN32ABI
bool	IsMipsN64ABI
bool	ProcessAllSections
sys::Mutex	lock
NotifyStubEmittedFunction	NotifyStubEmitted
bool	HasError
std::string	ErrorStr

Additional Inherited Members
Protected Types inherited from llvm::RuntimeDyldImpl
typedef std::deque< SectionEntry >	SectionList
typedef unsigned	SID
typedef std::map< SectionRef, unsigned >	ObjSectionToIDMap
typedef std::vector< SymbolRef >	CommonSymbolList
typedef SmallVector< RelocationEntry, 64 >	RelocationList
typedef std::map< RelocationValueRef, uintptr_t >	StubMap
using	NotifyStubEmittedFunction = RuntimeDyld::NotifyStubEmittedFunction
Static Protected Attributes inherited from llvm::RuntimeDyldImpl
static const unsigned	AbsoluteSymbolSection = ~0U

Detailed Description

Definition at line 24 of file RuntimeDyldELF.h.

Constructor & Destructor Documentation

RuntimeDyldELF()

llvm::RuntimeDyldELF::RuntimeDyldELF	(	RuntimeDyld::MemoryManager &	MemMgr,
		JITSymbolResolver &	Resolver
	)

Definition at line 217 of file RuntimeDyldELF.cpp.

~RuntimeDyldELF()

llvm::RuntimeDyldELF::~RuntimeDyldELF ( )

overridedefault

References llvm::object::resolveRelocation().

Member Function Documentation

create()

std::unique_ptr< RuntimeDyldELF > llvm::RuntimeDyldELF::create ( Triple::ArchType  Arch, RuntimeDyld::MemoryManager &  MemMgr, JITSymbolResolver &  Resolver  )

static

Definition at line 233 of file RuntimeDyldELF.cpp.

References llvm::RuntimeDyldImpl::Arch, llvm::RuntimeDyldImpl::MemMgr, llvm::Triple::mips, llvm::Triple::mips64, llvm::Triple::mips64el, and llvm::Triple::mipsel.

Referenced by llvm::createRuntimeDyldELF().

finalizeLoad()

Error llvm::RuntimeDyldELF::finalizeLoad ( const ObjectFile &  Obj, ObjSectionToIDMap &  SectionMap  )

overridevirtual

Reimplemented from llvm::RuntimeDyldImpl.

Definition at line 2327 of file RuntimeDyldELF.cpp.

References Addr, llvm::RuntimeDyld::MemoryManager::allocateCodeSection(), llvm::RuntimeDyld::MemoryManager::allocateDataSection(), assert(), llvm::StringMap< ValueTy, AllocatorTy >::clear(), llvm::consumeError(), llvm::dbgs(), llvm::format(), getAddress(), getGOTEntrySize(), llvm::RuntimeDyldImpl::IsMipsN32ABI, llvm::RuntimeDyldImpl::IsMipsN64ABI, llvm::RuntimeDyldImpl::IsMipsO32ABI, LLVM_DEBUG, llvm::RuntimeDyldImpl::MemMgr, Name, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::object::ObjectFile::section_begin(), llvm::object::ObjectFile::section_end(), llvm::RuntimeDyldImpl::Sections, SectionToGOTMap, llvm::Error::success(), llvm::Expected< T >::takeError(), and llvm::dwarf::toString().

getGOTEntrySize()

size_t llvm::RuntimeDyldELF::getGOTEntrySize ( )

overrideprotectedvirtual

Reimplemented from llvm::RuntimeDyldImpl.

Definition at line 2220 of file RuntimeDyldELF.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_be, llvm::RuntimeDyldImpl::Arch, llvm::Triple::arm, llvm::RuntimeDyldImpl::IsMipsN32ABI, llvm::RuntimeDyldImpl::IsMipsN64ABI, llvm::RuntimeDyldImpl::IsMipsO32ABI, llvm_unreachable, llvm::Triple::mips, llvm::Triple::mips64, llvm::Triple::mips64el, llvm::Triple::mipsel, llvm::Triple::ppc64, llvm::Triple::ppc64le, llvm::Triple::systemz, llvm::Triple::thumb, llvm::Triple::x86, and llvm::Triple::x86_64.

Referenced by finalizeLoad().

isCompatibleFile()

bool llvm::RuntimeDyldELF::isCompatibleFile ( const object::ObjectFile &  Obj ) const

overridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 2426 of file RuntimeDyldELF.cpp.

References llvm::object::Binary::isELF().

loadObject()

std::unique_ptr< RuntimeDyld::LoadedObjectInfo > llvm::RuntimeDyldELF::loadObject ( const object::ObjectFile &  O )

overridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 248 of file RuntimeDyldELF.cpp.

References llvm::RuntimeDyldImpl::ErrorStr, llvm::RuntimeDyldImpl::HasError, llvm::RuntimeDyldImpl::loadObjectImpl(), and llvm::logAllUnhandledErrors().

processRelocationRef()

Expected< relocation_iterator > llvm::RuntimeDyldELF::processRelocationRef ( unsigned  SectionID, relocation_iterator  RelI, const ObjectFile &  Obj, ObjSectionToIDMap &  ObjSectionToID, StubMap &  Stubs  )

overridevirtual

Parses one or more object file relocations (some object files use relocation pairs) and stores it to Relocations or SymbolRelocations (this depends on the object file type).

Returns

Iterator to the next relocation that needs to be parsed.

Implements llvm::RuntimeDyldImpl.

Definition at line 1225 of file RuntimeDyldELF.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_be, llvm::RelocationEntry::Addend, llvm::RelocationValueRef::Addend, llvm::RuntimeDyldImpl::addRelocationForSection(), llvm::RuntimeDyldImpl::addRelocationForSymbol(), llvm::alignTo(), llvm::RuntimeDyld::MemoryManager::allowStubAllocation(), llvm::RuntimeDyldImpl::Arch, llvm::Triple::arm, llvm::consumeError(), llvm::RuntimeDyldImpl::createStubFunction(), llvm::StringRef::data(), llvm::dbgs(), llvm::ELF::decodePPC64LocalEntryOffset(), llvm::ELF::EF_PPC64_ABI, llvm::StringMap< ValueTy, AllocatorTy >::end(), llvm::StringMap< ValueTy, AllocatorTy >::find(), llvm::RuntimeDyldImpl::findOrEmitSection(), llvm::object::ELFRelocationRef::getAddend(), llvm::object::ELFObjectFileBase::getPlatformFlags(), llvm::RuntimeDyldImpl::GlobalSymbolTable, I, llvm::RuntimeDyldImpl::IsMipsN32ABI, llvm::RuntimeDyldImpl::IsMipsN64ABI, llvm::RuntimeDyldImpl::IsMipsO32ABI, llvm::RuntimeDyldImpl::IsTargetLittleEndian, llvm::object::SectionRef::isText(), LLVM_DEBUG, llvm_unreachable, llvm::logAllUnhandledErrors(), llvm::RuntimeDyldImpl::MemMgr, llvm::Offset, OS, llvm::Triple::ppc64, llvm::Triple::ppc64le, llvm::RuntimeDyldImpl::readBytesUnaligned(), llvm::RelocationEntry::RelType, llvm::report_fatal_error(), llvm::object::ObjectFile::section_end(), llvm::RelocationEntry::SectionID, llvm::RelocationValueRef::SectionID, llvm::RuntimeDyldImpl::Sections, llvm::object::SymbolRef::ST_Data, llvm::object::SymbolRef::ST_Debug, llvm::object::SymbolRef::ST_Function, llvm::object::SymbolRef::ST_Other, llvm::object::SymbolRef::ST_Unknown, llvm::object::SymbolicFile::symbol_end(), llvm::RelocationEntry::SymOffset, llvm::Triple::systemz, llvm::Expected< T >::takeError(), llvm::RuntimeDyldImpl::writeInt32BE(), llvm::Triple::x86, and llvm::Triple::x86_64.

registerEHFrames()

void llvm::RuntimeDyldELF::registerEHFrames ( )

overridevirtual

Reimplemented from llvm::RuntimeDyldImpl.

Definition at line 222 of file RuntimeDyldELF.cpp.

References llvm::RuntimeDyldImpl::MemMgr, llvm::RuntimeDyld::MemoryManager::registerEHFrames(), and llvm::RuntimeDyldImpl::Sections.

resolveRelocation()

void llvm::RuntimeDyldELF::resolveRelocation ( const RelocationEntry &  RE, uint64_t  Value  )

overridevirtual

A object file specific relocation resolver.

Parameters

RE	The relocation to be resolved
Value	Target symbol address to apply the relocation action

Implements llvm::RuntimeDyldImpl.

Reimplemented in llvm::RuntimeDyldELFMips.

Definition at line 1034 of file RuntimeDyldELF.cpp.

References llvm::RelocationEntry::Addend, llvm::RelocationEntry::Offset, llvm::RelocationEntry::RelType, llvm::RelocationEntry::SectionID, llvm::RuntimeDyldImpl::Sections, and llvm::RelocationEntry::SymOffset.

Member Data Documentation

SectionToGOTMap

DenseMap<SID, SID> llvm::RuntimeDyldELF::SectionToGOTMap

protected

Definition at line 141 of file RuntimeDyldELF.h.

Referenced by finalizeLoad().

---

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

• lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
• lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp