This implements the Apple accelerator table format, a precursor of the DWARF 5 accelerator table format. More...

#include "llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h"

Inheritance diagram for llvm::AppleAcceleratorTable:

Classes
class	Entry
	Apple-specific implementation of an Accelerator Entry. More...

class	ValueIterator

Public Member Functions
	AppleAcceleratorTable (const DWARFDataExtractor &AccelSection, DataExtractor StringSection)

Error	extract () override

uint32_t	getNumBuckets ()

uint32_t	getNumHashes ()

uint32_t	getSizeHdr ()

uint32_t	getHeaderDataLength ()

ArrayRef< std::pair< HeaderData::AtomType, HeaderData::Form > >	getAtomsDesc ()
	Return the Atom description, which can be used to interpret the raw values of the Accelerator Entries in this table.

bool	validateForms ()

std::pair< uint64_t, dwarf::Tag >	readAtoms (uint64_t *HashDataOffset)
	Return information related to the DWARF DIE we're looking for when performing a lookup by name.

void	dump (raw_ostream &OS) const override

iterator_range< ValueIterator >	equal_range (StringRef Key) const
	Look up all entries in the accelerator table matching `Key`.

Public Member Functions inherited from llvm::DWARFAcceleratorTable
	DWARFAcceleratorTable (const DWARFDataExtractor &AccelSection, DataExtractor StringSection)

virtual	~DWARFAcceleratorTable ()

virtual Error	extract ()=0

virtual void	dump (raw_ostream &OS) const =0

	DWARFAcceleratorTable (const DWARFAcceleratorTable &)=delete

void	operator= (const DWARFAcceleratorTable &)=delete

Additional Inherited Members
Protected Attributes inherited from llvm::DWARFAcceleratorTable
DWARFDataExtractor	AccelSection

DataExtractor	StringSection

Detailed Description

This implements the Apple accelerator table format, a precursor of the DWARF 5 accelerator table format.

Definition at line 83 of file DWARFAcceleratorTable.h.

Constructor & Destructor Documentation

◆ AppleAcceleratorTable()

llvm::AppleAcceleratorTable::AppleAcceleratorTable	(	const DWARFDataExtractor &	AccelSection,
		DataExtractor	StringSection
	)

inline

Definition at line 181 of file DWARFAcceleratorTable.h.

Member Function Documentation

◆ dump()

LLVM_DUMP_METHOD void AppleAcceleratorTable::dump ( raw_ostream & OS ) const

overridevirtual

Implements llvm::DWARFAcceleratorTable.

Definition at line 202 of file DWARFAcceleratorTable.cpp.

References llvm::DWARFAcceleratorTable::AccelSection, for(), formatAtom(), llvm::formatv(), llvm::DataExtractor::getU32(), llvm::DataExtractor::isValidOffset(), llvm::Offset, OS, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::Twine::utohexstr().

Referenced by llvm::DWARFContext::dump().

◆ equal_range()

iterator_range< AppleAcceleratorTable::ValueIterator > AppleAcceleratorTable::equal_range ( StringRef Key ) const

Look up all entries in the accelerator table matching Key.

Definition at line 329 of file DWARFAcceleratorTable.cpp.

References llvm::DWARFAcceleratorTable::AccelSection, llvm::djbHash(), llvm::DataExtractor::getCStr(), llvm::DWARFDataExtractor::getRelocatedValue(), llvm::DataExtractor::getU32(), llvm::make_range(), and llvm::DWARFAcceleratorTable::StringSection.

◆ extract()

Error AppleAcceleratorTable::extract ( )

overridevirtual

Implements llvm::DWARFAcceleratorTable.

Definition at line 43 of file DWARFAcceleratorTable.cpp.

References llvm::DWARFAcceleratorTable::AccelSection, llvm::createStringError(), llvm::DataExtractor::getU16(), llvm::DataExtractor::getU32(), llvm::illegal_byte_sequence, llvm::DataExtractor::isValidOffset(), llvm::Offset, offsetof, and llvm::Error::success().

◆ getAtomsDesc()

ArrayRef< std::pair< AppleAcceleratorTable::HeaderData::AtomType, AppleAcceleratorTable::HeaderData::Form > > AppleAcceleratorTable::getAtomsDesc ( )

Return the Atom description, which can be used to interpret the raw values of the Accelerator Entries in this table.

Definition at line 90 of file DWARFAcceleratorTable.cpp.

Referenced by readAtoms(), and validateForms().

◆ getHeaderDataLength()

uint32_t AppleAcceleratorTable::getHeaderDataLength ( )

Definition at line 84 of file DWARFAcceleratorTable.cpp.

◆ getNumBuckets()

uint32_t AppleAcceleratorTable::getNumBuckets ( )

Definition at line 81 of file DWARFAcceleratorTable.cpp.

◆ getNumHashes()

uint32_t AppleAcceleratorTable::getNumHashes ( )

Definition at line 82 of file DWARFAcceleratorTable.cpp.

◆ getSizeHdr()

uint32_t AppleAcceleratorTable::getSizeHdr ( )

Definition at line 83 of file DWARFAcceleratorTable.cpp.

◆ readAtoms()

std::pair< uint64_t, dwarf::Tag > AppleAcceleratorTable::readAtoms ( uint64_t * HashDataOffset )

Return information related to the DWARF DIE we're looking for when performing a lookup by name.

Parameters

HashDataOffset an offset into the hash data table

Returns: <DieOffset, DieTag> DieOffset is the offset into the .debug_info section for the DIE related to the input hash data offset. DieTag is the tag of the DIE

Definition at line 114 of file DWARFAcceleratorTable.cpp.

References llvm::DWARFAcceleratorTable::AccelSection, llvm::dwarf::DW_ATOM_die_offset, llvm::dwarf::DW_ATOM_die_tag, llvm::dwarf::DW_INVALID_OFFSET, llvm::dwarf::DWARF32, llvm::DWARFFormValue::extractValue(), llvm::DWARFFormValue::getAsUnsignedConstant(), and getAtomsDesc().

◆ validateForms()

bool AppleAcceleratorTable::validateForms ( )

Definition at line 94 of file DWARFAcceleratorTable.cpp.

References llvm::dwarf::DW_ATOM_die_offset, llvm::dwarf::DW_ATOM_die_tag, llvm::dwarf::DW_ATOM_type_flags, llvm::DWARFFormValue::FC_Constant, llvm::DWARFFormValue::FC_Flag, getAtomsDesc(), llvm::DWARFFormValue::getForm(), and llvm::DWARFFormValue::isFormClass().

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

include/llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h
lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp

Classes

Public Member Functions

Additional Inherited Members