LLVM: llvm::dwarf_linker::parallel::SectionDescriptor Struct Reference (original) (raw)

This structure is used to keep data of the concrete section. More...

#include "[DWARFLinker/Parallel/OutputSections.h](OutputSections%5F8h%5Fsource.html)"

Public Member Functions
	SectionDescriptor (DebugSectionKind SectionKind, LinkingGlobalData &GlobalData, dwarf::FormParams Format, llvm::endianness Endianess)
void	clearAllSectionData ()
	Erase whole section content(data bits, list of patches).
void	clearSectionContent ()
	Erase only section output data bits.
template<typename T>
void	notePatchWithOffsetUpdate (const T &Patch, OffsetsPtrVector &PatchesOffsetsList)
	While creating patches, offsets to attributes may be partially unknown(because size of abbreviation number is unknown).
void	setSizesForSectionCreatedByAsmPrinter ()
	Some sections are emitted using AsmPrinter.
StringRef	getContents () override
	Returns section content.
void	emitUnitLength (uint64_t Length)
	Emit unit length into the current section contents.
void	maybeEmitDwarf64Mark ()
	Emit DWARF64 mark into the current section contents.
void	emitOffset (uint64_t Val)
	Emit specified offset value into the current section contents.
void	emitIntVal (uint64_t Val, unsigned Size)
	Emit specified integer value into the current section contents.
void	emitString (dwarf::Form StringForm, const char *StringVal)
void	emitBinaryData (llvm::StringRef Data)
void	emitInplaceString (StringRef String)
	Emit specified inplace string value into the current section contents.
void	emitStringPlaceholder ()
	Emit string placeholder into the current section contents.
void	apply (uint64_t PatchOffset, dwarf::Form AttrForm, uint64_t Val)
	Write specified Value of AttrForm to the PatchOffset.
uint64_t	getIntVal (uint64_t PatchOffset, unsigned Size)
	Returns integer value of Size located by specified PatchOffset.
Public Member Functions inherited from llvm::dwarf_linker::parallel::SectionDescriptorBase
	SectionDescriptorBase (DebugSectionKind SectionKind, dwarf::FormParams Format, llvm::endianness Endianess)
virtual	~SectionDescriptorBase ()=default
DebugSectionKind	getKind ()
	Returns section kind.
const StringLiteral &	getName () const
	Returns section name.
llvm::endianness	getEndianess () const
	Returns endianess used by section.
dwarf::FormParams	getFormParams () const
	Returns FormParams used by section.

Public Attributes
friend	OutputSections
uint64_t	StartOffset = 0
	When objects(f.e.
raw_svector_ostream	OS
	Stream which stores data to the Contents.

Protected Member Functions
void	applyIntVal (uint64_t PatchOffset, uint64_t Val, unsigned Size)
	Writes integer value Val of Size by specified PatchOffset.
void	applyULEB128 (uint64_t PatchOffset, uint64_t Val)
	Writes integer value Val of ULEB128 format by specified PatchOffset.
void	applySLEB128 (uint64_t PatchOffset, uint64_t Val)
	Writes integer value Val of SLEB128 format by specified PatchOffset.
void	setOutputFormat (dwarf::FormParams Format, llvm::endianness Endianess)
	Sets output format.

Protected Attributes
OutSectionDataTy	Contents
	Section data bits.
LinkingGlobalData &	GlobalData
size_t	SectionOffsetInsideAsmPrinterOutputStart = 0
	Some sections are generated using AsmPrinter.
size_t	SectionOffsetInsideAsmPrinterOutputEnd = 0
Protected Attributes inherited from llvm::dwarf_linker::parallel::SectionDescriptorBase
DebugSectionKind	SectionKind = DebugSectionKind::NumberOfEnumEntries
	The section kind.
dwarf::FormParams	Format = {4, 4, dwarf::DWARF32}
	Output format.
llvm::endianness	Endianess = llvm::endianness::little

This structure is used to keep data of the concrete section.

Like data bits, list of patches, format.

Definition at line 152 of file OutputSections.h.

◆ apply()

◆ applyIntVal()

◆ applySLEB128()

◆ applyULEB128()

◆ clearAllSectionData()

void SectionDescriptor::clearAllSectionData	(	)

◆ clearSectionContent()

void SectionDescriptor::clearSectionContent	(	)

◆ emitBinaryData()

◆ emitInplaceString()

void llvm::dwarf_linker::parallel::SectionDescriptor::emitInplaceString ( StringRef String)	inline

◆ emitIntVal()

Emit specified integer value into the current section contents.

Definition at line 139 of file OutputSections.cpp.

References llvm::dwarf_linker::parallel::SectionDescriptorBase::Endianess, llvm_unreachable, llvm::native, OS, Size, and llvm::sys::swapByteOrder().

Referenced by llvm::dwarf_linker::parallel::DwarfUnit::emitDebugStringOffsetSection(), emitInplaceString(), emitOffset(), llvm::dwarf_linker::parallel::DwarfUnit::emitPubAcceleratorEntry(), llvm::dwarf_linker::parallel::DwarfUnit::emitPubAccelerators(), emitUnitLength(), and maybeEmitDwarf64Mark().

◆ emitOffset()

void llvm::dwarf_linker::parallel::SectionDescriptor::emitOffset ( uint64_t Val)	inline

◆ emitString()

◆ emitStringPlaceholder()

void llvm::dwarf_linker::parallel::SectionDescriptor::emitStringPlaceholder ( )	inline

◆ emitUnitLength()

void llvm::dwarf_linker::parallel::SectionDescriptor::emitUnitLength ( uint64_t Length)	inline

◆ getContents()

StringRef llvm::dwarf_linker::parallel::SectionDescriptor::getContents ( )	inlineoverridevirtual

◆ getIntVal()

Returns integer value of Size located by specified PatchOffset.

Definition at line 225 of file OutputSections.cpp.

References assert(), data, llvm::StringRef::data(), llvm::dwarf_linker::parallel::SectionDescriptorBase::Endianess, getContents(), llvm_unreachable, llvm::support::endian::read16(), llvm::support::endian::read32(), llvm::support::endian::read64(), Size, and llvm::size().

◆ maybeEmitDwarf64Mark()

void llvm::dwarf_linker::parallel::SectionDescriptor::maybeEmitDwarf64Mark ( )	inline

◆ notePatchWithOffsetUpdate()

template<typename T>

void llvm::dwarf_linker::parallel::SectionDescriptor::notePatchWithOffsetUpdate ( const T & Patch, OffsetsPtrVector & PatchesOffsetsList )	inline

◆ setOutputFormat()

◆ setSizesForSectionCreatedByAsmPrinter()

void SectionDescriptor::setSizesForSectionCreatedByAsmPrinter	(	)

Some sections are emitted using AsmPrinter.

In that case "Contents" member of SectionDescriptor contains elf file. This method searches for section data inside elf file and remember offset to it.

Definition at line 77 of file OutputSections.cpp.

References llvm::consumeError(), Contents, llvm::object::ObjectFile::createObjectFile(), llvm::Data, llvm::dwarf_linker::parseDebugTableName(), llvm::dwarf_linker::parallel::SectionDescriptorBase::SectionKind, SectionOffsetInsideAsmPrinterOutputEnd, SectionOffsetInsideAsmPrinterOutputStart, and llvm::Expected< T >::takeError().

Referenced by llvm::dwarf_linker::parallel::DWARFLinkerImpl::emitAppleAcceleratorSections(), llvm::dwarf_linker::parallel::DwarfUnit::emitDebugInfo(), and llvm::dwarf_linker::parallel::DWARFLinkerImpl::emitDWARFv5DebugNamesSection().

◆ Contents

◆ GlobalData

◆ OS

Stream which stores data to the Contents.

Definition at line 190 of file OutputSections.h.

◆ OutputSections

friend llvm::dwarf_linker::parallel::SectionDescriptor::OutputSections

◆ SectionOffsetInsideAsmPrinterOutputEnd

size_t llvm::dwarf_linker::parallel::SectionDescriptor::SectionOffsetInsideAsmPrinterOutputEnd = 0	protected

◆ SectionOffsetInsideAsmPrinterOutputStart

size_t llvm::dwarf_linker::parallel::SectionDescriptor::SectionOffsetInsideAsmPrinterOutputStart = 0	protected

◆ StartOffset

uint64_t llvm::dwarf_linker::parallel::SectionDescriptor::StartOffset = 0

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

lib/DWARFLinker/Parallel/OutputSections.h
lib/DWARFLinker/Parallel/OutputSections.cpp