LLVM  16.0.0git
Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
llvm::RuntimeDyldELF Class Reference

#include "ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h"

Inheritance diagram for llvm::RuntimeDyldELF:
Inheritance graph
Collaboration diagram for llvm::RuntimeDyldELF:
Collaboration graph

Public Member Functions

 RuntimeDyldELF (RuntimeDyld::MemoryManager &MemMgr, JITSymbolResolver &Resolver)
 ~RuntimeDyldELF () override
std::unique_ptr< RuntimeDyld::LoadedObjectInfoloadObject (const object::ObjectFile &O) override
void resolveRelocation (const RelocationEntry &RE, uint64_t Value) override
 A object file specific relocation resolver. More...
Expected< relocation_iteratorprocessRelocationRef (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). More...
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)
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, JITEvaluatedSymbolgetSymbolTable () 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 ()
void setNotifyStubEmitted (NotifyStubEmittedFunction NotifyStubEmitted)
void deregisterEHFrames ()

Static Public Member Functions

static std::unique_ptr< RuntimeDyldELFcreate (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
void writeInt16BE (uint8_t *Addr, uint16_t Value)
void writeInt32BE (uint8_t *Addr, uint32_t Value)
void writeInt64BE (uint8_t *Addr, uint64_t Value)
uint64_t readBytesUnaligned (uint8_t *Src, unsigned Size) const
 Endian-aware read Read the least significant Size bytes from Src. More...
void writeBytesUnaligned (uint64_t Value, uint8_t *Dst, unsigned Size) const
 Endian-aware write. More...
virtual Expected< JITSymbolFlagsgetJITSymbolFlags (const SymbolRef &Sym)
 Generate JITSymbolFlags from a libObject symbol. More...
virtual uint64_t modifyAddressBasedOnFlags (uint64_t Addr, JITSymbolFlags Flags) const
 Modify the given target address based on the given symbol flags. More...
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. More...
Expected< unsigned > emitSection (const ObjectFile &Obj, const SectionRef &Section, bool IsCode)
 Emits section data from the object file to the MemoryManager. More...
Expected< unsigned > findOrEmitSection (const ObjectFile &Obj, const SectionRef &Section, bool IsCode, ObjSectionToIDMap &LocalSections)
 Find Section in LocalSections. More...
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. More...
void resolveRelocationList (const RelocationList &Relocs, uint64_t Value)
 Resolves relocations from Relocs list with address from Value. More...
void applyExternalSymbolRelocations (const StringMap< JITEvaluatedSymbol > ExternalSymbolMap)
Error resolveExternalSymbols ()
 Resolve relocations to external symbols. More...
Error computeTotalAllocSize (const ObjectFile &Obj, uint64_t &CodeSize, uint32_t &CodeAlign, uint64_t &RODataSize, uint32_t &RODataAlign, uint64_t &RWDataSize, uint32_t &RWDataAlign)
unsigned computeGOTSize (const ObjectFile &Obj)
unsigned computeSectionStubBufSize (const ObjectFile &Obj, const SectionRef &Section)
Expected< ObjSectionToIDMaploadObjectImpl (const object::ObjectFile &Obj)

Protected Attributes

DenseMap< SID, SIDSectionToGOTMap
- Protected Attributes inherited from llvm::RuntimeDyldImpl
SectionList Sections
RTDyldSymbolTable GlobalSymbolTable
std::unordered_map< unsigned, RelocationListRelocations
StringMap< RelocationListExternalSymbolRelocations
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< SectionEntrySectionList
typedef unsigned SID
typedef std::map< SectionRef, unsigned > ObjSectionToIDMap
typedef std::vector< SymbolRefCommonSymbolList
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 RuntimeDyldELF.h.

Constructor & Destructor Documentation

◆ RuntimeDyldELF()

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

Definition at line 216 of file RuntimeDyldELF.cpp.

◆ ~RuntimeDyldELF()

llvm::RuntimeDyldELF::~RuntimeDyldELF ( )

Member Function Documentation

◆ create()

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

◆ finalizeLoad()

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

◆ getGOTEntrySize()

size_t llvm::RuntimeDyldELF::getGOTEntrySize ( )

◆ isCompatibleFile()

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

Implements llvm::RuntimeDyldImpl.

Definition at line 2361 of file RuntimeDyldELF.cpp.

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

◆ loadObject()

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

◆ processRelocationRef()

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

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).

Iterator to the next relocation that needs to be parsed.

Implements llvm::RuntimeDyldImpl.

Definition at line 1213 of file RuntimeDyldELF.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_be, llvm::RelocationEntry::Addend, llvm::RuntimeDyldImpl::addRelocationForSection(), llvm::RuntimeDyldImpl::addRelocationForSymbol(), llvm::RuntimeDyld::MemoryManager::allowStubAllocation(), llvm::RuntimeDyldImpl::Arch, llvm::Triple::arm, llvm::consumeError(), llvm::RuntimeDyldImpl::createStubFunction(), llvm::StringRef::data(), llvm::dbgs(), 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, I, llvm::RuntimeDyldImpl::IsMipsN32ABI, llvm::RuntimeDyldImpl::IsMipsN64ABI, llvm::RuntimeDyldImpl::IsMipsO32ABI, LLVM_DEBUG, llvm_unreachable, llvm::logAllUnhandledErrors(), llvm::RuntimeDyldImpl::MemMgr, llvm::RISCVFenceField::O, 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::RuntimeDyldImpl::Sections, llvm::raw_string_ostream::str(), llvm::ARMBuildAttrs::Symbol, llvm::object::SymbolicFile::symbol_end(), llvm::RelocationEntry::SymOffset, and llvm::Expected< T >::takeError().

◆ registerEHFrames()

void llvm::RuntimeDyldELF::registerEHFrames ( )

◆ resolveRelocation()

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

A object file specific relocation resolver.

REThe relocation to be resolved
ValueTarget symbol address to apply the relocation action

Implements llvm::RuntimeDyldImpl.

Reimplemented in llvm::RuntimeDyldELFMips.

Definition at line 1030 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

Definition at line 143 of file RuntimeDyldELF.h.

Referenced by finalizeLoad().

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