LLVM  3.7.0
Public Member Functions | Protected Types | Protected Member Functions | Protected Attributes | Friends | List of all members
llvm::RuntimeDyldImpl Class Referenceabstract

#include <RuntimeDyldImpl.h>

Inheritance diagram for llvm::RuntimeDyldImpl:
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Collaboration diagram for llvm::RuntimeDyldImpl:
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Public Member Functions

 RuntimeDyldImpl (RuntimeDyld::MemoryManager &MemMgr, RuntimeDyld::SymbolResolver &Resolver)
 
virtual ~RuntimeDyldImpl ()
 
void setProcessAllSections (bool ProcessAllSections)
 
void setRuntimeDyldChecker (RuntimeDyldCheckerImpl *Checker)
 
virtual std::unique_ptr
< RuntimeDyld::LoadedObjectInfo
loadObject (const object::ObjectFile &Obj)=0
 
uint8_t * getSymbolLocalAddress (StringRef Name) const
 
RuntimeDyld::SymbolInfo getSymbol (StringRef Name) const
 
void resolveRelocations ()
 
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
 
virtual void registerEHFrames ()
 
virtual void deregisterEHFrames ()
 
virtual void finalizeLoad (const ObjectFile &ObjImg, ObjSectionToIDMap &SectionMap)
 

Protected Types

typedef SmallVector
< SectionEntry, 64 > 
SectionList
 
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
 

Protected Member Functions

virtual unsigned getMaxStubSize ()=0
 
virtual unsigned getStubAlignment ()=0
 
bool Error (const Twine &Msg)
 
uint64_t getSectionLoadAddress (unsigned SectionID) const
 
uint8_t * getSectionAddress (unsigned SectionID) const
 
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. More...
 
void writeBytesUnaligned (uint64_t Value, uint8_t *Dst, unsigned Size) const
 Endian-aware write. More...
 
void emitCommonSymbols (const ObjectFile &Obj, CommonSymbolList &CommonSymbols)
 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...
 
unsigned emitSection (const ObjectFile &Obj, const SectionRef &Section, bool IsCode)
 Emits section data from the object file to the MemoryManager. More...
 
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...
 
virtual void resolveRelocation (const RelocationEntry &RE, uint64_t Value)=0
 A object file specific relocation resolver. More...
 
virtual 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). More...
 
void resolveExternalSymbols ()
 Resolve relocations to external symbols. More...
 
void computeTotalAllocSize (const ObjectFile &Obj, uint64_t &CodeSize, uint64_t &DataSizeRO, uint64_t &DataSizeRW)
 
unsigned computeSectionStubBufSize (const ObjectFile &Obj, const SectionRef &Section)
 
std::pair< unsigned, unsignedloadObjectImpl (const object::ObjectFile &Obj)
 

Protected Attributes

RuntimeDyld::MemoryManagerMemMgr
 
RuntimeDyld::SymbolResolverResolver
 
RuntimeDyldCheckerImplChecker
 
SectionList Sections
 
RTDyldSymbolTable GlobalSymbolTable
 
DenseMap< unsigned,
RelocationList
Relocations
 
StringMap< RelocationListExternalSymbolRelocations
 
Triple::ArchType Arch
 
bool IsTargetLittleEndian
 
bool IsMipsO32ABI
 
bool IsMipsN64ABI
 
bool ProcessAllSections
 
sys::Mutex lock
 
bool HasError
 
std::string ErrorStr
 

Friends

class RuntimeDyld::LoadedObjectInfo
 
class RuntimeDyldCheckerImpl
 

Detailed Description

Definition at line 187 of file RuntimeDyldImpl.h.

Member Typedef Documentation

typedef std::vector<SymbolRef> llvm::RuntimeDyldImpl::CommonSymbolList
protected

Definition at line 216 of file RuntimeDyldImpl.h.

Definition at line 210 of file RuntimeDyldImpl.h.

Definition at line 223 of file RuntimeDyldImpl.h.

Definition at line 202 of file RuntimeDyldImpl.h.

Definition at line 205 of file RuntimeDyldImpl.h.

typedef std::map<RelocationValueRef, uintptr_t> llvm::RuntimeDyldImpl::StubMap
protected

Definition at line 235 of file RuntimeDyldImpl.h.

Constructor & Destructor Documentation

llvm::RuntimeDyldImpl::RuntimeDyldImpl ( RuntimeDyld::MemoryManager MemMgr,
RuntimeDyld::SymbolResolver Resolver 
)
inline

Definition at line 384 of file RuntimeDyldImpl.h.

RuntimeDyldImpl::~RuntimeDyldImpl ( )
virtual

Definition at line 31 of file RuntimeDyld.cpp.

Member Function Documentation

void llvm::RuntimeDyldImpl::addRelocationForSection ( const RelocationEntry RE,
unsigned  SectionID 
)
protected
void llvm::RuntimeDyldImpl::addRelocationForSymbol ( const RelocationEntry RE,
StringRef  SymbolName 
)
protected
void llvm::RuntimeDyldImpl::clearError ( )
inline

Definition at line 435 of file RuntimeDyldImpl.h.

unsigned llvm::RuntimeDyldImpl::computeSectionStubBufSize ( const ObjectFile Obj,
const SectionRef Section 
)
protected
void llvm::RuntimeDyldImpl::computeTotalAllocSize ( const ObjectFile Obj,
uint64_t &  CodeSize,
uint64_t &  DataSizeRO,
uint64_t &  DataSizeRW 
)
protected
uint8_t * llvm::RuntimeDyldImpl::createStubFunction ( uint8_t *  Addr,
unsigned  AbiVariant = 0 
)
protected

Emits long jump instruction to Addr.

Returns
Pointer to the memory area for emitting target address.

Definition at line 655 of file RuntimeDyld.cpp.

References llvm::Triple::aarch64, llvm::Triple::aarch64_be, llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::ppc64, llvm::Triple::ppc64le, llvm::Triple::systemz, llvm::Triple::x86, and llvm::Triple::x86_64.

Referenced by llvm::RuntimeDyldELF::processRelocationRef().

void llvm::RuntimeDyldImpl::deregisterEHFrames ( )
virtual

Reimplemented in llvm::RuntimeDyldCOFFX86_64, and llvm::RuntimeDyldELF.

Definition at line 40 of file RuntimeDyld.cpp.

void llvm::RuntimeDyldImpl::emitCommonSymbols ( const ObjectFile Obj,
CommonSymbolList CommonSymbols 
)
protected

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.

Definition at line 458 of file RuntimeDyld.cpp.

References Align(), llvm::Check(), llvm::dbgs(), DEBUG, llvm::Exported, llvm::format(), llvm::ErrorOr< T >::getError(), llvm::None, llvm::OffsetToAlignment(), llvm::report_fatal_error(), llvm::object::BasicSymbolRef::SF_Exported, llvm::object::BasicSymbolRef::SF_Weak, and llvm::Weak.

unsigned llvm::RuntimeDyldImpl::emitSection ( const ObjectFile Obj,
const SectionRef Section,
bool  IsCode 
)
protected

Emits section data from the object file to the MemoryManager.

Parameters
IsCodeif it's true then allocateCodeSection() will be used for emits, else allocateDataSection() will be used.
Returns
SectionID.

Definition at line 529 of file RuntimeDyld.cpp.

References llvm::Check(), llvm::StringRef::data(), llvm::dbgs(), DEBUG, llvm::format(), llvm::object::SectionRef::getAlignment(), llvm::object::SectionRef::getContents(), llvm::object::Binary::getFileName(), llvm::object::SectionRef::getName(), llvm::object::SectionRef::getSize(), llvm::isReadOnlyData(), llvm::isRequiredForExecution(), llvm::object::SectionRef::isVirtual(), llvm::isZeroInit(), and llvm::report_fatal_error().

bool llvm::RuntimeDyldImpl::Error ( const Twine Msg)
inlineprotected
virtual void llvm::RuntimeDyldImpl::finalizeLoad ( const ObjectFile ObjImg,
ObjSectionToIDMap SectionMap 
)
inlinevirtual
unsigned llvm::RuntimeDyldImpl::findOrEmitSection ( const ObjectFile Obj,
const SectionRef Section,
bool  IsCode,
ObjSectionToIDMap LocalSections 
)
protected

Find Section in LocalSections.

If the secton is not found - emit it and store in LocalSections.

Parameters
IsCodeif it's true then allocateCodeSection() will be used for emmits, else allocateDataSection() will be used.
Returns
SectionID.

Definition at line 617 of file RuntimeDyld.cpp.

References llvm::ARMBuildAttrs::Section.

Referenced by llvm::RuntimeDyldCOFFX86_64::processRelocationRef(), and llvm::RuntimeDyldELF::processRelocationRef().

StringRef llvm::RuntimeDyldImpl::getErrorString ( )
inline

Definition at line 438 of file RuntimeDyldImpl.h.

virtual unsigned llvm::RuntimeDyldImpl::getMaxStubSize ( )
protectedpure virtual
uint8_t* llvm::RuntimeDyldImpl::getSectionAddress ( unsigned  SectionID) const
inlineprotected

Definition at line 275 of file RuntimeDyldImpl.h.

uint64_t llvm::RuntimeDyldImpl::getSectionLoadAddress ( unsigned  SectionID) const
inlineprotected

Definition at line 271 of file RuntimeDyldImpl.h.

virtual unsigned llvm::RuntimeDyldImpl::getStubAlignment ( )
protectedpure virtual
RuntimeDyld::SymbolInfo llvm::RuntimeDyldImpl::getSymbol ( StringRef  Name) const
inline

Definition at line 413 of file RuntimeDyldImpl.h.

References llvm::StringMapEntry< ValueTy >::second.

uint8_t* llvm::RuntimeDyldImpl::getSymbolLocalAddress ( StringRef  Name) const
inline

Definition at line 403 of file RuntimeDyldImpl.h.

References llvm::StringMapEntry< ValueTy >::second.

bool llvm::RuntimeDyldImpl::hasError ( )
inline

Definition at line 432 of file RuntimeDyldImpl.h.

virtual bool llvm::RuntimeDyldImpl::isCompatibleFile ( const ObjectFile Obj) const
pure virtual
virtual std::unique_ptr<RuntimeDyld::LoadedObjectInfo> llvm::RuntimeDyldImpl::loadObject ( const object::ObjectFile Obj)
pure virtual
std::pair< unsigned, unsigned > llvm::RuntimeDyldImpl::loadObjectImpl ( const object::ObjectFile Obj)
protected
void llvm::RuntimeDyldImpl::mapSectionAddress ( const void *  LocalAddress,
uint64_t  TargetAddress 
)

Definition at line 104 of file RuntimeDyld.cpp.

References llvm::dwarf::syntax::Address, and llvm_unreachable.

virtual relocation_iterator llvm::RuntimeDyldImpl::processRelocationRef ( unsigned  SectionID,
relocation_iterator  RelI,
const ObjectFile Obj,
ObjSectionToIDMap ObjSectionToID,
StubMap Stubs 
)
protectedpure virtual

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.

Implemented in llvm::RuntimeDyldMachOAArch64, llvm::RuntimeDyldELF, llvm::RuntimeDyldCOFFX86_64, llvm::RuntimeDyldMachOARM, llvm::RuntimeDyldMachOI386, and llvm::RuntimeDyldMachOX86_64.

uint64_t llvm::RuntimeDyldImpl::readBytesUnaligned ( uint8_t *  Src,
unsigned  Size 
) const
protected

Endian-aware read Read the least significant Size bytes from Src.

Definition at line 428 of file RuntimeDyld.cpp.

Referenced by llvm::RuntimeDyldMachOARM::decodeAddend(), llvm::RuntimeDyldELF::processRelocationRef(), and llvm::RuntimeDyldMachOARM::resolveRelocation().

void llvm::RuntimeDyldImpl::reassignSectionAddress ( unsigned  SectionID,
uint64_t  Addr 
)

Definition at line 733 of file RuntimeDyld.cpp.

References llvm::dbgs(), DEBUG, and llvm::format().

void llvm::RuntimeDyldImpl::registerEHFrames ( )
virtual
void llvm::RuntimeDyldImpl::resolveExternalSymbols ( )
protected
virtual void llvm::RuntimeDyldImpl::resolveRelocation ( const RelocationEntry RE,
uint64_t  Value 
)
protectedpure virtual

A object file specific relocation resolver.

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

Implemented in llvm::RuntimeDyldMachOAArch64, llvm::RuntimeDyldELF, llvm::RuntimeDyldMachOARM, llvm::RuntimeDyldMachOI386, llvm::RuntimeDyldMachOX86_64, and llvm::RuntimeDyldCOFFX86_64.

void llvm::RuntimeDyldImpl::resolveRelocationList ( const RelocationList Relocs,
uint64_t  Value 
)
protected

Resolves relocations from Relocs list with address from Value.

Definition at line 752 of file RuntimeDyld.cpp.

References llvm::RelocationEntry::SectionID, and llvm::SmallVectorTemplateCommon< T, typename >::size().

void llvm::RuntimeDyldImpl::resolveRelocations ( )

Definition at line 82 of file RuntimeDyld.cpp.

References llvm::dbgs(), DEBUG, llvm::dumpSectionMemory(), and llvm::format().

virtual void llvm::RuntimeDyldImpl::setMipsABI ( const ObjectFile Obj)
inlineprotectedvirtual

Definition at line 308 of file RuntimeDyldImpl.h.

void llvm::RuntimeDyldImpl::setProcessAllSections ( bool  ProcessAllSections)
inline

Definition at line 392 of file RuntimeDyldImpl.h.

void llvm::RuntimeDyldImpl::setRuntimeDyldChecker ( RuntimeDyldCheckerImpl Checker)
inline

Definition at line 396 of file RuntimeDyldImpl.h.

void llvm::RuntimeDyldImpl::writeBytesUnaligned ( uint64_t  Value,
uint8_t *  Dst,
unsigned  Size 
) const
protected

Endian-aware write.

Write the least significant Size bytes from Value to Dst.

Definition at line 442 of file RuntimeDyld.cpp.

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

void llvm::RuntimeDyldImpl::writeInt16BE ( uint8_t *  Addr,
uint16_t  Value 
)
inlineprotected

Definition at line 279 of file RuntimeDyldImpl.h.

References llvm::sys::swapByteOrder().

void llvm::RuntimeDyldImpl::writeInt32BE ( uint8_t *  Addr,
uint32_t  Value 
)
inlineprotected

Definition at line 286 of file RuntimeDyldImpl.h.

References llvm::sys::swapByteOrder().

void llvm::RuntimeDyldImpl::writeInt64BE ( uint8_t *  Addr,
uint64_t  Value 
)
inlineprotected

Definition at line 295 of file RuntimeDyldImpl.h.

References llvm::sys::swapByteOrder().

Friends And Related Function Documentation

friend class RuntimeDyld::LoadedObjectInfo
friend

Definition at line 188 of file RuntimeDyldImpl.h.

friend class RuntimeDyldCheckerImpl
friend

Definition at line 189 of file RuntimeDyldImpl.h.

Member Data Documentation

Triple::ArchType llvm::RuntimeDyldImpl::Arch
protected

Definition at line 237 of file RuntimeDyldImpl.h.

Referenced by llvm::RuntimeDyldELF::processRelocationRef().

RuntimeDyldCheckerImpl* llvm::RuntimeDyldImpl::Checker
protected

Definition at line 198 of file RuntimeDyldImpl.h.

Referenced by llvm::RuntimeDyldELF::finalizeLoad().

std::string llvm::RuntimeDyldImpl::ErrorStr
protected

Definition at line 262 of file RuntimeDyldImpl.h.

StringMap<RelocationList> llvm::RuntimeDyldImpl::ExternalSymbolRelocations
protected

Definition at line 232 of file RuntimeDyldImpl.h.

RTDyldSymbolTable llvm::RuntimeDyldImpl::GlobalSymbolTable
protected

Definition at line 213 of file RuntimeDyldImpl.h.

Referenced by llvm::RuntimeDyldELF::processRelocationRef().

bool llvm::RuntimeDyldImpl::HasError
protected

Definition at line 261 of file RuntimeDyldImpl.h.

bool llvm::RuntimeDyldImpl::IsMipsN64ABI
protected
bool llvm::RuntimeDyldImpl::IsMipsO32ABI
protected

Definition at line 239 of file RuntimeDyldImpl.h.

Referenced by llvm::RuntimeDyldELF::processRelocationRef().

bool llvm::RuntimeDyldImpl::IsTargetLittleEndian
protected

Definition at line 238 of file RuntimeDyldImpl.h.

sys::Mutex llvm::RuntimeDyldImpl::lock
protected

Definition at line 256 of file RuntimeDyldImpl.h.

RuntimeDyld::MemoryManager& llvm::RuntimeDyldImpl::MemMgr
protected
bool llvm::RuntimeDyldImpl::ProcessAllSections
protected

Definition at line 244 of file RuntimeDyldImpl.h.

DenseMap<unsigned, RelocationList> llvm::RuntimeDyldImpl::Relocations
protected

Definition at line 227 of file RuntimeDyldImpl.h.

RuntimeDyld::SymbolResolver& llvm::RuntimeDyldImpl::Resolver
protected

Definition at line 195 of file RuntimeDyldImpl.h.

SectionList llvm::RuntimeDyldImpl::Sections
protected

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