LLVM: llvm::jitlink::ELFLinkGraphBuilder< ELFT > Class Template Reference (original) (raw)

LinkGraph building code that's specific to the given ELFT, but common across all architectures. More...

#include "[ExecutionEngine/JITLink/ELFLinkGraphBuilder.h](ELFLinkGraphBuilder%5F8h%5Fsource.html)"

Public Member Functions
ELFLinkGraphBuilder (const object::ELFFile< ELFT > &Obj, std::shared_ptr< orc::SymbolStringPool > SSP, Triple TT, SubtargetFeatures Features, StringRef FileName, LinkGraph::GetEdgeKindNameFunction GetEdgeKindName)
ELFLinkGraphBuilder & setProcessDebugSections (bool ProcessDebugSections)
Debug sections are included in the graph by default.
Expected< std::unique_ptr< LinkGraph > > buildGraph ()
Attempt to construct and return the LinkGraph.
virtual Error addRelocations ()=0
Call to derived class to handle relocations.
template
Error forEachRelaRelocation (const typename ELFT::Shdr &RelSect, RelocHandlerFunction &&Func)
template
Error forEachRelRelocation (const typename ELFT::Shdr &RelSect, RelocHandlerFunction &&Func)
Public Member Functions inherited from llvm::jitlink::ELFLinkGraphBuilderBase
ELFLinkGraphBuilderBase (std::unique_ptr< LinkGraph > G)
virtual ~ELFLinkGraphBuilderBase ()
Protected Member Functions
bool isRelocatable () const
void setGraphBlock (ELFSectionIndex SecIndex, Block *B)
Block * getGraphBlock (ELFSectionIndex SecIndex)
void setGraphSymbol (ELFSymbolIndex SymIndex, Symbol &Sym)
Symbol * getGraphSymbol (ELFSymbolIndex SymIndex)
Expected< std::pair< Linkage, Scope > > getSymbolLinkageAndScope (const typename ELFT::Sym &Sym, StringRef Name)
virtual TargetFlagsType makeTargetFlags (const typename ELFT::Sym &Sym)
Set the target flags on the given Symbol.
virtual orc::ExecutorAddrDiff getRawOffset (const typename ELFT::Sym &Sym, TargetFlagsType Flags)
Get the physical offset of the symbol on the target platform.
Error prepare ()
Error graphifySections ()
Error graphifySymbols ()
virtual bool excludeSection (const typename ELFT::Shdr &Sect) const
Override in derived classes to suppress certain sections in the link graph.
template
Error forEachRelaRelocation (const typename ELFT::Shdr &RelSect, RelocHandlerMethod &&Func)
Traverse all matching ELFT::Rela relocation records in the given section.
template
Error forEachRelRelocation (const typename ELFT::Shdr &RelSect, RelocHandlerMethod &&Func)
Traverse all matching ELFT::Rel relocation records in the given section.
template<typename ClassT, typename RelocHandlerMethod>
Error forEachRelaRelocation (const typename ELFT::Shdr &RelSect, ClassT *Instance, RelocHandlerMethod &&Method)
Traverse all matching rela relocation records in the given section.
template<typename ClassT, typename RelocHandlerMethod>
Error forEachRelRelocation (const typename ELFT::Shdr &RelSect, ClassT *Instance, RelocHandlerMethod &&Method)
Traverse all matching rel relocation records in the given section.
Protected Member Functions inherited from llvm::jitlink::ELFLinkGraphBuilderBase
Section & getCommonSection ()
Protected Attributes
const ELFFile & Obj
ELFFile::Elf_Shdr_Range Sections
const ELFFile::Elf_Shdr * SymTabSec = nullptr
StringRef SectionStringTab
bool ProcessDebugSections = true
DenseMap< ELFSectionIndex, Block * > GraphBlocks
DenseMap< ELFSymbolIndex, Symbol * > GraphSymbols
DenseMap< const typename ELFFile::Elf_Shdr *, ArrayRef< typename ELFFile::Elf_Word > > ShndxTables
Protected Attributes inherited from llvm::jitlink::ELFLinkGraphBuilderBase
std::unique_ptr< LinkGraph > G

template
class llvm::jitlink::ELFLinkGraphBuilder< ELFT >

LinkGraph building code that's specific to the given ELFT, but common across all architectures.

Definition at line 57 of file ELFLinkGraphBuilder.h.

◆ ELFSectionIndex

◆ ELFSymbolIndex

◆ addRelocations()

Call to derived class to handle relocations.

These require architecture specific knowledge to map to JITLink edge kinds.

Referenced by buildGraph().

◆ buildGraph()

Attempt to construct and return the LinkGraph.

Definition at line 205 of file ELFLinkGraphBuilder.h.

References addRelocations(), llvm::jitlink::ELFLinkGraphBuilderBase::G, graphifySections(), graphifySymbols(), isRelocatable(), llvm::make_error(), and prepare.

Referenced by llvm::jitlink::createLinkGraphFromELFObject_aarch32(), llvm::jitlink::createLinkGraphFromELFObject_ppc64(), llvm::jitlink::createLinkGraphFromELFObject_riscv(), llvm::jitlink::createLinkGraphFromELFObject_systemz(), llvm::jitlink::createLinkGraphFromELFObject_x86(), and llvm::jitlink::createLinkGraphFromELFObject_x86_64().

◆ excludeSection()

◆ forEachRelaRelocation() [1/3]

template

template<typename ClassT, typename RelocHandlerMethod>

Traverse all matching rela relocation records in the given section.

Convenience wrapper to allow passing a member function for the handler.

Definition at line 153 of file ELFLinkGraphBuilder.h.

References forEachRelaRelocation().

◆ forEachRelaRelocation() [2/3]

template

template

◆ forEachRelaRelocation() [3/3]

template

template

◆ forEachRelRelocation() [1/3]

template

template<typename ClassT, typename RelocHandlerMethod>

Traverse all matching rel relocation records in the given section.

Convenience wrapper to allow passing a member function for the handler.

Definition at line 166 of file ELFLinkGraphBuilder.h.

References forEachRelRelocation().

◆ forEachRelRelocation() [2/3]

template

template

◆ forEachRelRelocation() [3/3]

template

template

◆ getGraphBlock()

◆ getGraphSymbol()

◆ getRawOffset()

◆ getSymbolLinkageAndScope()

Definition at line 226 of file ELFLinkGraphBuilder.h.

References llvm::jitlink::Default, llvm::jitlink::Hidden, llvm::inconvertibleErrorCode(), llvm::jitlink::Local, llvm::make_error(), llvm::ELF::STB_GLOBAL, llvm::ELF::STB_GNU_UNIQUE, llvm::ELF::STB_LOCAL, llvm::ELF::STB_WEAK, llvm::jitlink::Strong, llvm::ELF::STV_DEFAULT, llvm::ELF::STV_HIDDEN, llvm::ELF::STV_INTERNAL, llvm::ELF::STV_PROTECTED, and llvm::jitlink::Weak.

Referenced by graphifySymbols().

◆ graphifySections()

Definition at line 313 of file ELFLinkGraphBuilder.h.

References B(), llvm::Data, llvm::dbgs(), excludeSection(), llvm::orc::Exec, llvm::jitlink::ELFLinkGraphBuilderBase::G, isDwarfSection(), LLVM_DEBUG, llvm::make_error(), llvm::orc::NoAlloc, Obj, ProcessDebugSections, llvm::orc::Read, Sections, SectionStringTab, setGraphBlock(), llvm::ELF::SHF_ALLOC, llvm::ELF::SHF_EXECINSTR, llvm::ELF::SHF_WRITE, llvm::ELF::SHT_ARM_EXIDX, llvm::ELF::SHT_NOBITS, llvm::ELF::SHT_NULL, llvm::Error::success(), and llvm::orc::Write.

Referenced by buildGraph().

◆ graphifySymbols()

Definition at line 413 of file ELFLinkGraphBuilder.h.

References B(), llvm::dbgs(), llvm::jitlink::Default, llvm::formatv(), llvm::jitlink::ELFLinkGraphBuilderBase::G, llvm::jitlink::ELFLinkGraphBuilderBase::getCommonSection(), llvm::object::getExtendedSymbolTableIndex(), getGraphBlock(), getRawOffset(), getSymbolLinkageAndScope(), llvm::orc::ExecutorAddr::getValue(), llvm::inconvertibleErrorCode(), LLVM_DEBUG, llvm::jitlink::Local, llvm::make_error(), makeTargetFlags(), Obj, llvm::Offset, Sections, SectionStringTab, setGraphSymbol(), llvm::ELF::SHN_XINDEX, ShndxTables, llvm::ELF::STB_GLOBAL, llvm::ELF::STB_LOCAL, llvm::ELF::STB_WEAK, llvm::jitlink::Strong, llvm::ELF::STT_FILE, llvm::ELF::STT_FUNC, llvm::ELF::STT_NOTYPE, llvm::ELF::STT_OBJECT, llvm::ELF::STT_SECTION, llvm::ELF::STT_TLS, llvm::Error::success(), SymTabSec, llvm::toString(), and llvm::jitlink::Weak.

Referenced by buildGraph().

◆ isRelocatable()

◆ makeTargetFlags()

◆ prepare()

Definition at line 271 of file ELFLinkGraphBuilder.h.

References llvm::dbgs(), llvm::jitlink::ELFLinkGraphBuilderBase::G, LLVM_DEBUG, llvm::make_error(), Obj, Sections, SectionStringTab, ShndxTables, llvm::ELF::SHT_SYMTAB, llvm::ELF::SHT_SYMTAB_SHNDX, llvm::Error::success(), and SymTabSec.

◆ setGraphBlock()

◆ setGraphSymbol()

◆ setProcessDebugSections()

◆ GraphBlocks

◆ GraphSymbols

◆ Obj

◆ ProcessDebugSections

◆ Sections

◆ SectionStringTab

◆ ShndxTables

◆ SymTabSec

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