#include "ELFObject.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCELFExtras.h"
#include "llvm/MC/MCTargetOptions.h"
#include "llvm/Object/ELF.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Support/Compression.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/Support/Path.h"
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <iterator>
#include <unordered_set>
#include <utility>
#include <vector>

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

namespace	llvm::objcopy

namespace	llvm::objcopy::elf

Functions
template<bool Is64>
static SmallVector< char, 0 >	encodeCrel (ArrayRef< Relocation > Relocations)

static bool	addressOverflows32bit (uint64_t Addr)

template<class T >
static T	checkedGetHex (StringRef S)

template<class T , class Iterator >
static Iterator	toHexStr (T X, Iterator It, size_t Len)

static Error	checkRecord (const IHexRecord &R)

static Error	checkChars (StringRef Line)

static uint64_t	sectionPhysicalAddr (const SectionBase *Sec)

static bool	isValidReservedSectionIndex (uint16_t Index, uint16_t Machine)

template<class ELFT >
static void	setAddend (Elf_Rel_Impl< ELFT, false > &, uint64_t)

template<class ELFT >
static void	setAddend (Elf_Rel_Impl< ELFT, true > &Rela, uint64_t Addend)

template<class RelRange , class T >
static void	writeRel (const RelRange &Relocations, T *Buf, bool IsMips64EL)

static bool	sectionWithinSegment (const SectionBase &Sec, const Segment &Seg)

static bool	segmentOverlapsSegment (const Segment &Child, const Segment &Parent)

static bool	compareSegmentsByOffset (const Segment A, const Segment B)

template<class ELFT >
static void	getAddend (uint64_t &, const Elf_Rel_Impl< ELFT, false > &)

template<class ELFT >
static void	getAddend (uint64_t &ToSet, const Elf_Rel_Impl< ELFT, true > &Rela)

template<class T >
static Error	initRelocations (RelocationSection *Relocs, T RelRange)

static void	orderSegments (std::vector< Segment * > &Segments)

static uint64_t	layoutSegments (std::vector< Segment * > &Segments, uint64_t Offset)

template<class Range >
static uint64_t	layoutSections (Range Sections, uint64_t Offset)

static uint64_t	layoutSectionsForOnlyKeepDebug (Object &Obj, uint64_t Off)

static uint64_t	layoutSegmentsForOnlyKeepDebug (std::vector< Segment * > &Segments, uint64_t HdrEnd)

static Error	removeUnneededSections (Object &Obj)

Function Documentation

◆ addressOverflows32bit()

static bool addressOverflows32bit ( uint64_t Addr )

static

Definition at line 196 of file ELFObject.cpp.

References Addr.

Referenced by llvm::objcopy::elf::ASCIIHexWriter::checkSection(), and llvm::objcopy::elf::ASCIIHexWriter::finalize().

◆ checkChars()

static Error checkChars ( StringRef Line )

static

Definition at line 304 of file ELFObject.cpp.

References assert(), llvm::createStringError(), llvm::invalid_argument, and llvm::Error::success().

Referenced by llvm::objcopy::elf::IHexRecord::parse().

◆ checkedGetHex()

template<class T >

static T checkedGetHex ( StringRef S )

static

Definition at line 201 of file ELFObject.cpp.

References assert(), Fail, and llvm::StringRef::getAsInteger().

◆ checkRecord()

static Error checkRecord ( const IHexRecord & R )

static

Definition at line 254 of file ELFObject.cpp.

References llvm::createStringError(), llvm::objcopy::elf::IHexRecord::Data, llvm::objcopy::elf::IHexRecord::EndOfFile, llvm::objcopy::elf::IHexRecord::ExtendedAddr, llvm::invalid_argument, llvm::objcopy::elf::IHexRecord::SegmentAddr, llvm::objcopy::elf::IHexRecord::StartAddr, llvm::objcopy::elf::IHexRecord::StartAddr80x86, and llvm::Error::success().

Referenced by llvm::objcopy::elf::IHexRecord::parse().

◆ compareSegmentsByOffset()

static bool compareSegmentsByOffset	(	const Segment *	A,
		const Segment *	B
	)

static

Definition at line 1256 of file ELFObject.cpp.

References A, and B.

Referenced by layoutSegments(), and orderSegments().

◆ encodeCrel()

template<bool Is64>

static SmallVector< char, 0 > encodeCrel ( ArrayRef< Relocation > Relocations )

static

Definition at line 112 of file ELFObject.cpp.

References Content, and OS.

◆ getAddend() [1/2]

template<class ELFT >

static void getAddend	(	uint64_t &	,
		const Elf_Rel_Impl< ELFT, false > &
	)

static

Definition at line 1650 of file ELFObject.cpp.

Referenced by initRelocations(), and loadObj().

◆ getAddend() [2/2]

template<class ELFT >

static void getAddend	(	uint64_t &	ToSet,
		const Elf_Rel_Impl< ELFT, true > &	Rela
	)

static

Definition at line 1653 of file ELFObject.cpp.

◆ initRelocations()

template<class T >

static Error initRelocations	(	RelocationSection *	Relocs,
		T	RelRange
	)

static

Definition at line 1658 of file ELFObject.cpp.

◆ isValidReservedSectionIndex()

static bool isValidReservedSectionIndex	(	uint16_t	Index,
		uint16_t	Machine
	)

static

Definition at line 651 of file ELFObject.cpp.

References llvm::ELF::EM_AMDGPU, llvm::ELF::EM_HEXAGON, llvm::ELF::EM_MIPS, Machine, llvm::ELF::SHN_ABS, llvm::ELF::SHN_AMDGPU_LDS, llvm::ELF::SHN_COMMON, llvm::ELF::SHN_HEXAGON_SCOMMON, llvm::ELF::SHN_HEXAGON_SCOMMON_1, llvm::ELF::SHN_HEXAGON_SCOMMON_2, llvm::ELF::SHN_HEXAGON_SCOMMON_4, llvm::ELF::SHN_HEXAGON_SCOMMON_8, llvm::ELF::SHN_MIPS_ACOMMON, llvm::ELF::SHN_MIPS_SCOMMON, and llvm::ELF::SHN_MIPS_SUNDEFINED.

◆ layoutSections()

template<class Range >

static uint64_t layoutSections	(	Range	Sections,
		uint64_t	Offset
	)

static

Definition at line 2355 of file ELFObject.cpp.

References llvm::alignTo(), llvm::Offset, llvm::objcopy::elf::Segment::Offset, llvm::objcopy::elf::SectionBase::OriginalOffset, llvm::objcopy::elf::Segment::OriginalOffset, llvm::ELF::SHT_NOBITS, and llvm::stable_sort().

◆ layoutSectionsForOnlyKeepDebug()

static uint64_t layoutSectionsForOnlyKeepDebug	(	Object &	Obj,
		uint64_t	Off
	)

static

Definition at line 2391 of file ELFObject.cpp.

References llvm::alignTo(), llvm::objcopy::elf::SectionBase::OriginalOffset, llvm::ELF::PT_LOAD, llvm::objcopy::elf::Object::sections(), llvm::ELF::SHT_NOBITS, llvm::objcopy::elf::SectionTableRef::size(), and llvm::stable_sort().

◆ layoutSegments()

static uint64_t layoutSegments	(	std::vector< Segment * > &	Segments,
		uint64_t	Offset
	)

static

Definition at line 2322 of file ELFObject.cpp.

References llvm::objcopy::elf::Segment::Align, llvm::alignTo(), assert(), compareSegmentsByOffset(), llvm::objcopy::elf::Segment::FileSize, llvm::is_sorted(), llvm::Offset, llvm::objcopy::elf::Segment::Offset, llvm::objcopy::elf::Segment::OriginalOffset, llvm::objcopy::elf::Segment::ParentSegment, and llvm::objcopy::elf::Segment::VAddr.

◆ layoutSegmentsForOnlyKeepDebug()

static uint64_t layoutSegmentsForOnlyKeepDebug	(	std::vector< Segment * > &	Segments,
		uint64_t	HdrEnd
	)

static

Definition at line 2441 of file ELFObject.cpp.

References llvm::objcopy::elf::Segment::FileSize, llvm::objcopy::elf::Segment::firstSection(), llvm::Offset, llvm::objcopy::elf::SectionBase::Offset, llvm::objcopy::elf::Segment::Offset, llvm::objcopy::elf::Segment::ParentSegment, llvm::ELF::PT_PHDR, llvm::objcopy::elf::Segment::Sections, llvm::ELF::SHT_NOBITS, Size, llvm::objcopy::elf::SectionBase::Size, llvm::objcopy::elf::SectionBase::Type, and llvm::objcopy::elf::Segment::Type.

◆ orderSegments()

static void orderSegments ( std::vector< Segment * > & Segments )

static

Definition at line 2315 of file ELFObject.cpp.

References compareSegmentsByOffset(), and llvm::stable_sort().

◆ removeUnneededSections()

static Error removeUnneededSections ( Object & Obj )

static

Definition at line 2551 of file ELFObject.cpp.

References llvm::objcopy::elf::SymbolTableSection::empty(), llvm::objcopy::elf::SymbolTableSection::getStrTab(), llvm::objcopy::elf::Object::isRelocatable(), llvm::objcopy::elf::Object::removeSections(), llvm::objcopy::elf::Object::SectionNames, llvm::Error::success(), and llvm::objcopy::elf::Object::SymbolTable.

Referenced by llvm::objcopy::elf::ELFWriter< ELFT >::finalize().

◆ sectionPhysicalAddr()

static uint64_t sectionPhysicalAddr ( const SectionBase * Sec )

static

Definition at line 346 of file ELFObject.cpp.

References llvm::objcopy::elf::SectionBase::Addr, llvm::objcopy::elf::SectionBase::OriginalOffset, llvm::objcopy::elf::Segment::OriginalOffset, llvm::objcopy::elf::Segment::PAddr, llvm::objcopy::elf::SectionBase::ParentSegment, llvm::ELF::PT_LOAD, and llvm::objcopy::elf::Segment::Type.

Referenced by llvm::objcopy::elf::ASCIIHexWriter::finalize(), llvm::objcopy::elf::SRECSectionWriterBase::writeSection(), and llvm::objcopy::elf::IHexSectionWriterBase::writeSection().

◆ sectionWithinSegment()

static bool sectionWithinSegment	(	const SectionBase &	Sec,
		const Segment &	Seg
	)

static

Definition at line 1219 of file ELFObject.cpp.

References llvm::objcopy::elf::SectionBase::Addr, llvm::objcopy::elf::Segment::FileSize, llvm::objcopy::elf::SectionBase::Flags, llvm::objcopy::elf::Segment::MemSize, llvm::objcopy::elf::Segment::Offset, llvm::objcopy::elf::SectionBase::OriginalOffset, llvm::ELF::PT_TLS, llvm::ELF::SHF_ALLOC, llvm::ELF::SHF_TLS, llvm::ELF::SHT_NOBITS, llvm::objcopy::elf::SectionBase::Size, llvm::objcopy::elf::SectionBase::Type, llvm::objcopy::elf::Segment::Type, and llvm::objcopy::elf::Segment::VAddr.

◆ segmentOverlapsSegment()

static bool segmentOverlapsSegment	(	const Segment &	Child,
		const Segment &	Parent
	)

static

Definition at line 1249 of file ELFObject.cpp.

References llvm::objcopy::elf::Segment::FileSize, and llvm::objcopy::elf::Segment::OriginalOffset.

◆ setAddend() [1/2]

template<class ELFT >

static void setAddend	(	Elf_Rel_Impl< ELFT, false > &	,
		uint64_t
	)

static

Definition at line 968 of file ELFObject.cpp.

Referenced by writeRel().

◆ setAddend() [2/2]

template<class ELFT >

static void setAddend	(	Elf_Rel_Impl< ELFT, true > &	Rela,
		uint64_t	Addend
	)

static

Definition at line 971 of file ELFObject.cpp.

◆ toHexStr()

template<class T , class Iterator >

static Iterator toHexStr	(	T	X,
		Iterator	It,
		size_t	Len
	)

static

Definition at line 212 of file ELFObject.cpp.

References assert(), I, llvm::Mod, and X.

Referenced by llvm::objcopy::elf::IHexRecord::getLine(), and llvm::objcopy::elf::SRecord::toString().

◆ writeRel()

template<class RelRange , class T >

static void writeRel	(	const RelRange &	Relocations,
		T *	Buf,
		bool	IsMips64EL
	)

static

Definition at line 976 of file ELFObject.cpp.

References setAddend().

Referenced by llvm::objcopy::elf::ELFSectionWriter< ELFT >::visit().

Namespaces

Functions

Function Documentation

◆ addressOverflows32bit()

◆ checkChars()

◆ checkedGetHex()

◆ checkRecord()

◆ compareSegmentsByOffset()

◆ encodeCrel()

◆ getAddend() [1/2]

◆ getAddend() [2/2]

◆ initRelocations()

◆ isValidReservedSectionIndex()

◆ layoutSections()

◆ layoutSectionsForOnlyKeepDebug()

◆ layoutSegments()

◆ layoutSegmentsForOnlyKeepDebug()

◆ orderSegments()

◆ removeUnneededSections()

◆ sectionPhysicalAddr()

◆ sectionWithinSegment()

◆ segmentOverlapsSegment()

◆ setAddend() [1/2]

◆ setAddend() [2/2]

◆ toHexStr()

◆ writeRel()