llvm::RuntimeDyldMachOARM Class Reference

#include "ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOARM.h"

Inheritance diagram for llvm::RuntimeDyldMachOARM:

Public Types
typedef uint32_t	TargetPtrT

Public Member Functions
	RuntimeDyldMachOARM (RuntimeDyld::MemoryManager &MM, JITSymbolResolver &Resolver)
unsigned	getMaxStubSize () const override
Align	getStubAlignment () override
Expected< JITSymbolFlags >	getJITSymbolFlags (const SymbolRef &SR) override
	Generate JITSymbolFlags from a libObject symbol.
uint64_t	modifyAddressBasedOnFlags (uint64_t Addr, JITSymbolFlags Flags) const override
	Modify the given target address based on the given symbol flags.
bool	isAddrTargetThumb (unsigned SectionID, uint64_t Offset)
Expected< int64_t >	decodeAddend (const RelocationEntry &RE) const
Expected< relocation_iterator >	processRelocationRef (unsigned SectionID, relocation_iterator RelI, const ObjectFile &BaseObjT, 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).
void	resolveRelocation (const RelocationEntry &RE, uint64_t Value) override
	A object file specific relocation resolver.
Error	finalizeSection (const ObjectFile &Obj, unsigned SectionID, const SectionRef &Section)
Public Member Functions inherited from llvm::RuntimeDyldMachOCRTPBase< RuntimeDyldMachOARM >
	RuntimeDyldMachOCRTPBase (RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
Error	finalizeLoad (const ObjectFile &Obj, ObjSectionToIDMap &SectionMap) override
void	registerEHFrames () override
Public Member Functions inherited from llvm::RuntimeDyldMachO
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)

Additional Inherited Members
Static Public Member Functions inherited from llvm::RuntimeDyldMachO
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 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
Protected Member Functions inherited from llvm::RuntimeDyldMachO
	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 inherited from llvm::RuntimeDyldMachO
static section_iterator	getSectionByAddress (const MachOObjectFile &Obj, uint64_t Addr)
Protected Attributes inherited from llvm::RuntimeDyldMachO
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
Static Protected Attributes inherited from llvm::RuntimeDyldImpl
static const unsigned	AbsoluteSymbolSection = ~0U

Detailed Description

Definition at line 18 of file RuntimeDyldMachOARM.h.

Member Typedef Documentation

TargetPtrT

typedef uint32_t llvm::RuntimeDyldMachOARM::TargetPtrT

Definition at line 25 of file RuntimeDyldMachOARM.h.

Constructor & Destructor Documentation

RuntimeDyldMachOARM()

llvm::RuntimeDyldMachOARM::RuntimeDyldMachOARM ( RuntimeDyld::MemoryManager &  MM, JITSymbolResolver &  Resolver  )

inline

Definition at line 27 of file RuntimeDyldMachOARM.h.

Member Function Documentation

decodeAddend()

Expected< int64_t > llvm::RuntimeDyldMachOARM::decodeAddend ( const RelocationEntry &  RE ) const

inline

Definition at line 62 of file RuntimeDyldMachOARM.h.

References llvm::MachO::ARM_RELOC_BR24, llvm::MachO::ARM_THUMB_RELOC_BR22, llvm::inconvertibleErrorCode(), llvm::RuntimeDyldMachO::memcpyAddend(), llvm::RelocationEntry::Offset, llvm::RuntimeDyldImpl::readBytesUnaligned(), llvm::RelocationEntry::RelType, llvm::RelocationEntry::SectionID, and llvm::RuntimeDyldImpl::Sections.

Referenced by processRelocationRef().

finalizeSection()

Error llvm::RuntimeDyldMachOARM::finalizeSection ( const ObjectFile &  Obj, unsigned  SectionID, const SectionRef &  Section  )

inline

Definition at line 288 of file RuntimeDyldMachOARM.h.

References llvm::consumeError(), Name, llvm::RuntimeDyldMachO::populateIndirectSymbolPointersSection(), and llvm::Error::success().

getJITSymbolFlags()

Expected< JITSymbolFlags > llvm::RuntimeDyldMachOARM::getJITSymbolFlags ( const SymbolRef &  Sym )

inlineoverridevirtual

Generate JITSymbolFlags from a libObject symbol.

Reimplemented from llvm::RuntimeDyldImpl.

Definition at line 35 of file RuntimeDyldMachOARM.h.

References llvm::ARMJITSymbolFlags::fromObjectSymbol(), and llvm::RuntimeDyldImpl::getJITSymbolFlags().

getMaxStubSize()

unsigned llvm::RuntimeDyldMachOARM::getMaxStubSize ( ) const

inlineoverridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 31 of file RuntimeDyldMachOARM.h.

getStubAlignment()

Align llvm::RuntimeDyldMachOARM::getStubAlignment ( )

inlineoverridevirtual

Implements llvm::RuntimeDyldImpl.

Definition at line 33 of file RuntimeDyldMachOARM.h.

isAddrTargetThumb()

bool llvm::RuntimeDyldMachOARM::isAddrTargetThumb ( unsigned  SectionID, uint64_t  Offset  )

inline

Definition at line 50 of file RuntimeDyldMachOARM.h.

References llvm::RuntimeDyldImpl::GlobalSymbolTable, llvm::Offset, llvm::RuntimeDyldImpl::Sections, and llvm::ARMJITSymbolFlags::Thumb.

Referenced by processRelocationRef().

modifyAddressBasedOnFlags()

uint64_t llvm::RuntimeDyldMachOARM::modifyAddressBasedOnFlags ( uint64_t  Addr, JITSymbolFlags  Flags  ) const

inlineoverridevirtual

Modify the given target address based on the given symbol flags.

This can be used by subclasses to tweak addresses based on symbol flags, For example: the MachO/ARM target uses it to set the low bit if the target is a thumb symbol.

Reimplemented from llvm::RuntimeDyldImpl.

Definition at line 43 of file RuntimeDyldMachOARM.h.

References Addr, and llvm::ARMJITSymbolFlags::Thumb.

processRelocationRef()

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

inlineoverridevirtual

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 100 of file RuntimeDyldMachOARM.h.

References llvm::RelocationEntry::Addend, llvm::RuntimeDyldImpl::addRelocationForSection(), llvm::RuntimeDyldImpl::addRelocationForSymbol(), llvm::MachO::ARM_RELOC_BR24, llvm::MachO::ARM_RELOC_HALF, llvm::MachO::ARM_RELOC_HALF_SECTDIFF, llvm::MachO::ARM_RELOC_LOCAL_SECTDIFF, llvm::MachO::ARM_RELOC_PAIR, llvm::MachO::ARM_RELOC_PB_LA_PTR, llvm::MachO::ARM_RELOC_SECTDIFF, llvm::MachO::ARM_THUMB_32BIT_BRANCH, llvm::MachO::ARM_THUMB_RELOC_BR22, decodeAddend(), llvm::StringMap< ValueTy, AllocatorTy >::end(), llvm::StringMap< ValueTy, AllocatorTy >::find(), llvm::MachO::GENERIC_RELOC_VANILLA, llvm::object::MachOObjectFile::getAnyRelocationType(), llvm::object::MachOObjectFile::getPlainRelocationExternal(), llvm::object::MachOObjectFile::getRelocation(), llvm::RuntimeDyldMachO::getRelocationEntry(), llvm::RuntimeDyldMachO::getRelocationValueRef(), llvm::RuntimeDyldImpl::GlobalSymbolTable, isAddrTargetThumb(), llvm::RelocationEntry::IsPCRel, llvm::object::MachOObjectFile::isRelocationScattered(), llvm::RelocationEntry::IsTargetThumbFunc, llvm::RuntimeDyldMachO::makeValueAddendPCRel(), llvm::RuntimeDyldMachO::processScatteredVANILLA(), llvm::RelocationEntry::RelType, llvm::ARMJITSymbolFlags::Thumb, and UNIMPLEMENTED_RELOC.

resolveRelocation()

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

inlineoverridevirtual

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.

Definition at line 202 of file RuntimeDyldMachOARM.h.

References llvm::RelocationEntry::Addend, llvm::MachO::ARM_RELOC_BR24, llvm::MachO::ARM_RELOC_HALF_SECTDIFF, llvm::MachO::ARM_RELOC_VANILLA, llvm::MachO::ARM_THUMB_RELOC_BR22, assert(), llvm::RuntimeDyldMachO::dumpRelocationToResolve(), Insn, llvm::RelocationEntry::IsPCRel, llvm::RelocationEntry::IsTargetThumbFunc, LLVM_DEBUG, llvm_unreachable, llvm::RelocationEntry::Offset, llvm::RuntimeDyldImpl::readBytesUnaligned(), llvm::RelocationEntry::RelType, llvm::RelocationEntry::SectionPair::SectionA, llvm::RelocationEntry::SectionPair::SectionB, llvm::RelocationEntry::SectionID, llvm::RelocationEntry::Sections, llvm::RuntimeDyldImpl::Sections, llvm::RelocationEntry::Size, and llvm::RuntimeDyldImpl::writeBytesUnaligned().

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

• lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOARM.h