llvm::RuntimeDyldMachO Class Reference

#include "ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.h"

Inheritance diagram for llvm::RuntimeDyldMachO:

Classes
struct	EHFrameRelatedSections
struct	SectionOffsetPair

Public Member Functions
std::unique_ptr< RuntimeDyld::LoadedObjectInfo >	loadObject (const object::ObjectFile &O) override
SectionEntry &	getSection (unsigned SectionID)
bool	isCompatibleFile (const object::ObjectFile &Obj) const 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< RuntimeDyldMachO >	create (Triple::ArchType Arch, RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
	Create a RuntimeDyldMachO instance for the given target architecture.
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
	RuntimeDyldMachO (RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
int64_t	memcpyAddend (const RelocationEntry &RE) const
	This convenience method uses memcpy to extract a contiguous addend (the addend size and offset are taken from the corresponding fields of the RE).
RelocationEntry	getRelocationEntry (unsigned SectionID, const ObjectFile &BaseTObj, const relocation_iterator &RI) const
	Given a relocation_iterator for a non-scattered relocation, construct a RelocationEntry and fill in the common fields.
Expected< relocation_iterator >	processScatteredVANILLA (unsigned SectionID, relocation_iterator RelI, const ObjectFile &BaseObjT, RuntimeDyldMachO::ObjSectionToIDMap &ObjSectionToID, bool TargetIsLocalThumbFunc=false)
	Process a scattered vanilla relocation.
Expected< RelocationValueRef >	getRelocationValueRef (const ObjectFile &BaseTObj, const relocation_iterator &RI, const RelocationEntry &RE, ObjSectionToIDMap &ObjSectionToID)
	Construct a RelocationValueRef representing the relocation target.
void	makeValueAddendPCRel (RelocationValueRef &Value, const relocation_iterator &RI, unsigned OffsetToNextPC)
	Make the RelocationValueRef addend PC-relative.
void	dumpRelocationToResolve (const RelocationEntry &RE, uint64_t Value) const
	Dump information about the relocation entry (RE) and resolved value.
Error	populateIndirectSymbolPointersSection (const MachOObjectFile &Obj, const SectionRef &PTSection, unsigned PTSectionID)
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

Static Protected Member Functions
static section_iterator	getSectionByAddress (const MachOObjectFile &Obj, uint64_t Addr)

Protected Attributes
SmallVector< EHFrameRelatedSections, 2 >	UnregisteredEHFrameSections
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 26 of file RuntimeDyldMachO.h.

Constructor & Destructor Documentation

RuntimeDyldMachO()

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

inlineprotected

Definition at line 51 of file RuntimeDyldMachO.h.

Member Function Documentation

create()

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

static

Create a RuntimeDyldMachO instance for the given target architecture.

Definition at line 349 of file RuntimeDyldMachO.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_32, llvm::RuntimeDyldImpl::Arch, llvm::Triple::arm, llvm_unreachable, llvm::RuntimeDyldImpl::MemMgr, llvm::Triple::x86, and llvm::Triple::x86_64.

Referenced by llvm::createRuntimeDyldMachO().

dumpRelocationToResolve()

void llvm::RuntimeDyldMachO::dumpRelocationToResolve ( const RelocationEntry &  RE, uint64_t  Value  ) const

protected

Dump information about the relocation entry (RE) and resolved value.

Definition at line 148 of file RuntimeDyldMachO.cpp.

References llvm::RelocationEntry::Addend, llvm::dbgs(), llvm::format(), llvm::RelocationEntry::Offset, llvm::RelocationEntry::SectionID, and llvm::RuntimeDyldImpl::Sections.

Referenced by llvm::RuntimeDyldMachOAArch64::resolveRelocation(), llvm::RuntimeDyldMachOARM::resolveRelocation(), llvm::RuntimeDyldMachOI386::resolveRelocation(), and llvm::RuntimeDyldMachOX86_64::resolveRelocation().

getRelocationEntry()

RelocationEntry llvm::RuntimeDyldMachO::getRelocationEntry ( unsigned  SectionID, const ObjectFile &  BaseTObj, const relocation_iterator &  RI  ) const

inlineprotected

Given a relocation_iterator for a non-scattered relocation, construct a RelocationEntry and fill in the common fields.

The 'Addend' field is not filled in, since immediate encodings are highly target/opcode specific. For targets/opcodes with simple, contiguous immediates (e.g. X86) the memcpyAddend method can be used to read the immediate.

Definition at line 64 of file RuntimeDyldMachO.h.

References llvm::object::MachOObjectFile::getAnyRelocationLength(), llvm::object::MachOObjectFile::getAnyRelocationPCRel(), llvm::object::MachOObjectFile::getAnyRelocationType(), llvm::object::MachOObjectFile::getRelocation(), llvm::Offset, and Size.

Referenced by llvm::RuntimeDyldMachOAArch64::processRelocationRef(), llvm::RuntimeDyldMachOARM::processRelocationRef(), llvm::RuntimeDyldMachOI386::processRelocationRef(), and llvm::RuntimeDyldMachOX86_64::processRelocationRef().

getRelocationValueRef()

Expected< RelocationValueRef > llvm::RuntimeDyldMachO::getRelocationValueRef ( const ObjectFile &  BaseTObj, const relocation_iterator &  RI, const RelocationEntry &  RE, ObjSectionToIDMap &  ObjSectionToID  )

protected

Construct a RelocationValueRef representing the relocation target.

For Symbols in known sections, this will return a RelocationValueRef representing a (SectionID, Offset) pair. For Symbols whose section is not known, this will return a (SymbolName, Offset) pair, where the Offset is taken from the instruction immediate (held in RE.Addend). In both cases the Addend field is NOT fixed up to be PC-relative. That should be done by the caller where appropriate by calling makePCRel on the RelocationValueRef.

Definition at line 97 of file RuntimeDyldMachO.cpp.

References llvm::RelocationEntry::Addend, Addr, llvm::StringRef::data(), llvm::StringMap< ValueTy, AllocatorTy >::end(), llvm::StringMap< ValueTy, AllocatorTy >::find(), llvm::RuntimeDyldImpl::findOrEmitSection(), llvm::object::SectionRef::getAddress(), llvm::object::MachOObjectFile::getAnyRelocationSection(), llvm::object::MachOObjectFile::getPlainRelocationExternal(), llvm::object::MachOObjectFile::getRelocation(), llvm::RuntimeDyldImpl::GlobalSymbolTable, and llvm::object::SectionRef::isText().

Referenced by llvm::RuntimeDyldMachOAArch64::processRelocationRef(), llvm::RuntimeDyldMachOARM::processRelocationRef(), llvm::RuntimeDyldMachOI386::processRelocationRef(), and llvm::RuntimeDyldMachOX86_64::processRelocationRef().

getSection()

SectionEntry & llvm::RuntimeDyldMachO::getSection ( unsigned  SectionID )

inline

Definition at line 132 of file RuntimeDyldMachO.h.

References llvm::RuntimeDyldImpl::Sections.

getSectionByAddress()

section_iterator llvm::RuntimeDyldMachO::getSectionByAddress ( const MachOObjectFile &  Obj, uint64_t  Addr  )

staticprotected

Definition at line 163 of file RuntimeDyldMachO.cpp.

References Addr, llvm::object::MachOObjectFile::section_begin(), and llvm::object::MachOObjectFile::section_end().

Referenced by processScatteredVANILLA().

isCompatibleFile()

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

overridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 222 of file RuntimeDyldMachO.cpp.

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

loadObject()

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

overridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 370 of file RuntimeDyldMachO.cpp.

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

makeValueAddendPCRel()

void llvm::RuntimeDyldMachO::makeValueAddendPCRel ( RelocationValueRef &  Value, const relocation_iterator &  RI, unsigned  OffsetToNextPC  )

protected

Make the RelocationValueRef addend PC-relative.

Definition at line 140 of file RuntimeDyldMachO.cpp.

References llvm::object::SectionRef::getAddress().

Referenced by llvm::RuntimeDyldMachOAArch64::processRelocationRef(), llvm::RuntimeDyldMachOARM::processRelocationRef(), llvm::RuntimeDyldMachOI386::processRelocationRef(), and llvm::RuntimeDyldMachOX86_64::processRelocationRef().

memcpyAddend()

int64_t llvm::RuntimeDyldMachO::memcpyAddend ( const RelocationEntry &  RE ) const

protected

This convenience method uses memcpy to extract a contiguous addend (the addend size and offset are taken from the corresponding fields of the RE).

Definition at line 46 of file RuntimeDyldMachO.cpp.

References llvm::RelocationEntry::Offset, llvm::RuntimeDyldImpl::readBytesUnaligned(), llvm::RelocationEntry::SectionID, llvm::RuntimeDyldImpl::Sections, and llvm::RelocationEntry::Size.

Referenced by llvm::RuntimeDyldMachOARM::decodeAddend(), llvm::RuntimeDyldMachOI386::processRelocationRef(), and llvm::RuntimeDyldMachOX86_64::processRelocationRef().

populateIndirectSymbolPointersSection()

Error llvm::RuntimeDyldMachO::populateIndirectSymbolPointersSection ( const MachOObjectFile &  Obj, const SectionRef &  PTSection, unsigned  PTSectionID  )

protected

Definition at line 180 of file RuntimeDyldMachO.cpp.

References llvm::RuntimeDyldImpl::addRelocationForSymbol(), assert(), llvm::dbgs(), llvm::MachO::GENERIC_RELOC_VANILLA, llvm::object::MachOObjectFile::getDysymtabLoadCommand(), llvm::object::MachOObjectFile::getIndirectSymbolTableEntry(), getName(), llvm::object::SectionRef::getRawDataRefImpl(), llvm::object::MachOObjectFile::getSection(), llvm::object::MachOObjectFile::getSymbolByIndex(), llvm::object::MachOObjectFile::is64Bit(), LLVM_DEBUG, llvm::MachO::section::reserved1, llvm::RuntimeDyldImpl::Sections, llvm::MachO::section::size, and llvm::Error::success().

Referenced by llvm::RuntimeDyldMachOARM::finalizeSection(), and llvm::RuntimeDyldMachOI386::finalizeSection().

processScatteredVANILLA()

Expected< relocation_iterator > llvm::RuntimeDyldMachO::processScatteredVANILLA ( unsigned  SectionID, relocation_iterator  RelI, const ObjectFile &  BaseObjT, RuntimeDyldMachO::ObjSectionToIDMap &  ObjSectionToID, bool  TargetIsLocalThumbFunc = false  )

protected

Process a scattered vanilla relocation.

Definition at line 54 of file RuntimeDyldMachO.cpp.

References llvm::RuntimeDyldImpl::addRelocationForSection(), assert(), llvm::RuntimeDyldImpl::findOrEmitSection(), llvm::object::SectionRef::getAddress(), llvm::object::MachOObjectFile::getAnyRelocationLength(), llvm::object::MachOObjectFile::getAnyRelocationPCRel(), llvm::object::MachOObjectFile::getAnyRelocationType(), llvm::object::MachOObjectFile::getRelocation(), llvm::object::MachOObjectFile::getScatteredRelocationValue(), getSectionByAddress(), llvm::object::SectionRef::isText(), llvm::Offset, llvm::RuntimeDyldImpl::readBytesUnaligned(), llvm::object::MachOObjectFile::section_end(), llvm::RuntimeDyldImpl::Sections, and Size.

Referenced by llvm::RuntimeDyldMachOARM::processRelocationRef(), and llvm::RuntimeDyldMachOI386::processRelocationRef().

Member Data Documentation

UnregisteredEHFrameSections

SmallVector<EHFrameRelatedSections, 2> llvm::RuntimeDyldMachO::UnregisteredEHFrameSections

protected

Definition at line 49 of file RuntimeDyldMachO.h.

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

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