#include <MCMachObjectWriter.h>

Inheritance diagram for llvm::MachObjectWriter:

Collaboration diagram for llvm::MachObjectWriter:

Classes
struct	MachSymbolData
Public Member Functions
	MachObjectWriter (MCMachObjectTargetWriter *MOTW, raw_ostream &_OS, bool _IsLittleEndian)
void	WriteHeader (unsigned NumLoadCommands, unsigned LoadCommandsSize, bool SubsectionsViaSymbols)
void	WriteSegmentLoadCommand (unsigned NumSections, uint64_t VMSize, uint64_t SectionDataStartOffset, uint64_t SectionDataSize)
void	WriteSection (const MCAssembler &Asm, const MCAsmLayout &Layout, const MCSectionData &SD, uint64_t FileOffset, uint64_t RelocationsStart, unsigned NumRelocations)
void	WriteSymtabLoadCommand (uint32_t SymbolOffset, uint32_t NumSymbols, uint32_t StringTableOffset, uint32_t StringTableSize)
void	WriteDysymtabLoadCommand (uint32_t FirstLocalSymbol, uint32_t NumLocalSymbols, uint32_t FirstExternalSymbol, uint32_t NumExternalSymbols, uint32_t FirstUndefinedSymbol, uint32_t NumUndefinedSymbols, uint32_t IndirectSymbolOffset, uint32_t NumIndirectSymbols)
void	WriteNlist (MachSymbolData &MSD, const MCAsmLayout &Layout)
void	WriteLinkeditLoadCommand (uint32_t Type, uint32_t DataOffset, uint32_t DataSize)
void	WriteLinkerOptionsLoadCommand (const std::vector< std::string > &Options)
void	addRelocation (const MCSectionData *SD, MachO::any_relocation_info &MRE)
void	RecordScatteredRelocation (const MCAssembler &Asm, const MCAsmLayout &Layout, const MCFragment *Fragment, const MCFixup &Fixup, MCValue Target, unsigned Log2Size, uint64_t &FixedValue)
void	RecordTLVPRelocation (const MCAssembler &Asm, const MCAsmLayout &Layout, const MCFragment *Fragment, const MCFixup &Fixup, MCValue Target, uint64_t &FixedValue)
void	RecordRelocation (const MCAssembler &Asm, const MCAsmLayout &Layout, const MCFragment *Fragment, const MCFixup &Fixup, MCValue Target, bool &IsPCRel, uint64_t &FixedValue) override
	Record a relocation entry.
void	BindIndirectSymbols (MCAssembler &Asm)
void	ComputeSymbolTable (MCAssembler &Asm, SmallString< 256 > &StringTable, std::vector< MachSymbolData > &LocalSymbolData, std::vector< MachSymbolData > &ExternalSymbolData, std::vector< MachSymbolData > &UndefinedSymbolData)
void	computeSectionAddresses (const MCAssembler &Asm, const MCAsmLayout &Layout)
void	markAbsoluteVariableSymbols (MCAssembler &Asm, const MCAsmLayout &Layout)
void	ExecutePostLayoutBinding (MCAssembler &Asm, const MCAsmLayout &Layout) override
	Perform any late binding of symbols (for example, to assign symbol indices for use when generating relocations).
bool	IsSymbolRefDifferenceFullyResolvedImpl (const MCAssembler &Asm, const MCSymbolData &DataA, const MCFragment &FB, bool InSet, bool IsPCRel) const override
void	WriteObject (MCAssembler &Asm, const MCAsmLayout &Layout) override
	Write the object file.
Lifetime management Methods
void	reset () override
	lifetime management
Target Writer Proxy Accessors
bool	is64Bit () const
bool	isX86_64 () const
Utility Methods
SectionAddrMap	SectionAddress
bool	isFixupKindPCRel (const MCAssembler &Asm, unsigned Kind)
SectionAddrMap &	getSectionAddressMap ()
uint64_t	getSectionAddress (const MCSectionData *SD) const
uint64_t	getSymbolAddress (const MCSymbolData *SD, const MCAsmLayout &Layout) const
uint64_t	getFragmentAddress (const MCFragment *Fragment, const MCAsmLayout &Layout) const
uint64_t	getPaddingSize (const MCSectionData *SD, const MCAsmLayout &Layout) const
bool	doesSymbolRequireExternRelocation (const MCSymbolData *SD)

Detailed Description

Definition at line 81 of file MCMachObjectWriter.h.

Constructor & Destructor Documentation

llvm::MachObjectWriter::MachObjectWriter	(	MCMachObjectTargetWriter *	MOTW,
		raw_ostream &	_OS,
		bool	_IsLittleEndian
	)		`[inline]`

Definition at line 115 of file MCMachObjectWriter.h.

Member Function Documentation

void llvm::MachObjectWriter::addRelocation	(	const MCSectionData *	SD,
		MachO::any_relocation_info &	MRE
	)		`[inline]`

Definition at line 213 of file MCMachObjectWriter.h.

void MachObjectWriter::BindIndirectSymbols ( MCAssembler & Asm )

Definition at line 463 of file MachObjectWriter.cpp.

References llvm::MCSymbolData::getFlags(), llvm::MCSymbol::getName(), llvm::MCAssembler::getOrCreateSymbolData(), llvm::MCSectionMachO::getType(), llvm::MCAssembler::indirect_symbol_begin(), llvm::MCAssembler::indirect_symbol_end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::insert(), llvm::report_fatal_error(), llvm::MachO::S_LAZY_SYMBOL_POINTERS, llvm::MachO::S_NON_LAZY_SYMBOL_POINTERS, llvm::MachO::S_SYMBOL_STUBS, llvm::ARMBuildAttrs::Section, llvm::MCSymbolData::setFlags(), and llvm::ARMBuildAttrs::Symbol.

Referenced by ExecutePostLayoutBinding().

void MachObjectWriter::computeSectionAddresses	(	const MCAssembler &	Asm,
		const MCAsmLayout &	Layout
	)

strictly be necessary.

Definition at line 640 of file MachObjectWriter.cpp.

References llvm::MCSectionData::getAlignment(), getPaddingSize(), llvm::MCAsmLayout::getSectionAddressSize(), llvm::MCAsmLayout::getSectionOrder(), llvm::RoundUpToAlignment(), SectionAddress, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by ExecutePostLayoutBinding().

void MachObjectWriter::ComputeSymbolTable	(	MCAssembler &	Asm,
		SmallString< 256 > &	StringTable,
		std::vector< MachSymbolData > &	LocalSymbolData,
		std::vector< MachSymbolData > &	ExternalSymbolData,
		std::vector< MachSymbolData > &	UndefinedSymbolData
	)

ComputeSymbolTable - Compute the symbol table data

Parameters:

StringTable [out] - The string table data.

ComputeSymbolTable - Compute the symbol table data

Parameters:

StringTable	[out] - The string table data.
StringIndexMap	[out] - Map from symbol names to offsets in the string table.

Definition at line 533 of file MachObjectWriter.cpp.

References llvm::MCAssembler::begin(), llvm::MCAssembler::end(), llvm::MCSymbol::getName(), llvm::MCSymbol::getSection(), llvm::MCSymbol::isAbsolute(), llvm::MCAssembler::isSymbolLinkerVisible(), llvm::MCSymbol::isUndefined(), llvm::DenseMapBase< DenseMap< KeyT, ValueT, KeyInfoT >, KeyT, ValueT, KeyInfoT >::lookup(), llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::ARMBuildAttrs::Symbol, and llvm::MCAssembler::symbols().

Referenced by ExecutePostLayoutBinding().

bool MachObjectWriter::doesSymbolRequireExternRelocation ( const MCSymbolData * SD )

Definition at line 42 of file MachObjectWriter.cpp.

References llvm::MCSymbolData::getFlags(), llvm::MCSymbol::isUndefined(), llvm::SF_WeakDefinition, and llvm::MCSymbolData::Symbol.

void MachObjectWriter::ExecutePostLayoutBinding	(	MCAssembler &	Asm,
		const MCAsmLayout &	Layout
	)		`[override, virtual]`

Perform any late binding of symbols (for example, to assign symbol indices for use when generating relocations).

This routine is called by the assembler after layout and relaxation is complete.

Implements llvm::MCObjectWriter.

Definition at line 674 of file MachObjectWriter.cpp.

References BindIndirectSymbols(), computeSectionAddresses(), ComputeSymbolTable(), and markAbsoluteVariableSymbols().

uint64_t MachObjectWriter::getFragmentAddress	(	const MCFragment *	Fragment,
		const MCAsmLayout &	Layout
	)		const

Definition at line 69 of file MachObjectWriter.cpp.

References llvm::MCAsmLayout::getFragmentOffset(), llvm::MCFragment::getParent(), and getSectionAddress().

uint64_t MachObjectWriter::getPaddingSize	(	const MCSectionData *	SD,
		const MCAsmLayout &	Layout
	)		const

Definition at line 113 of file MachObjectWriter.cpp.

References llvm::MCSectionData::getAlignment(), llvm::MCSectionData::getLayoutOrder(), llvm::MCSectionData::getSection(), getSectionAddress(), llvm::MCAsmLayout::getSectionAddressSize(), llvm::MCAsmLayout::getSectionOrder(), llvm::MCSection::isVirtualSection(), llvm::OffsetToAlignment(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by computeSectionAddresses(), and WriteObject().

uint64_t llvm::MachObjectWriter::getSectionAddress ( const MCSectionData * SD ) const [inline]

Definition at line 136 of file MCMachObjectWriter.h.

References SectionAddress.

Referenced by getFragmentAddress(), getPaddingSize(), getSymbolAddress(), WriteObject(), and WriteSection().

SectionAddrMap& llvm::MachObjectWriter::getSectionAddressMap ( ) [inline]

Definition at line 134 of file MCMachObjectWriter.h.

uint64_t MachObjectWriter::getSymbolAddress	(	const MCSymbolData *	SD,
		const MCAsmLayout &	Layout
	)		const

bool llvm::MachObjectWriter::is64Bit ( ) const [inline]

Definition at line 155 of file MCMachObjectWriter.h.

Referenced by WriteHeader(), WriteLinkerOptionsLoadCommand(), WriteNlist(), WriteObject(), WriteSection(), and WriteSegmentLoadCommand().

bool MachObjectWriter::isFixupKindPCRel	(	const MCAssembler &	Asm,
		unsigned	Kind
	)

Definition at line 62 of file MachObjectWriter.cpp.

References llvm::MCFixupKindInfo::FKF_IsPCRel, llvm::MCFixupKindInfo::Flags, llvm::MCAssembler::getBackend(), and llvm::MCAsmBackend::getFixupKindInfo().

bool MachObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl	(	const MCAssembler &	Asm,
		const MCSymbolData &	DataA,
		const MCFragment &	FB,
		bool	InSet,
		bool	IsPCRel
	)		const `[override, virtual]`

Reimplemented from llvm::MCObjectWriter.

Definition at line 691 of file MachObjectWriter.cpp.

References llvm::MCSymbol::AliasedSymbol(), llvm::MCFragment::getAtom(), llvm::MCSymbolData::getFragment(), llvm::MCFragment::getParent(), llvm::MCSymbol::getSection(), llvm::MCSectionData::getSection(), llvm::MCAssembler::getSubsectionsViaSymbols(), llvm::MCSymbolData::getSymbol(), llvm::MCAssembler::getSymbolData(), llvm::MCSymbol::isInSection(), llvm::MCSymbol::isTemporary(), and isX86_64().

bool llvm::MachObjectWriter::isX86_64 ( ) const [inline]

Definition at line 156 of file MCMachObjectWriter.h.

Referenced by IsSymbolRefDifferenceFullyResolvedImpl().

void MachObjectWriter::markAbsoluteVariableSymbols	(	MCAssembler &	Asm,
		const MCAsmLayout &	Layout
	)

Definition at line 657 of file MachObjectWriter.cpp.

References llvm::MCExpr::EvaluateAsRelocatable(), llvm::MCValue::getSymA(), llvm::MCValue::getSymB(), and llvm::MCAssembler::symbols().

Referenced by ExecutePostLayoutBinding().

void MachObjectWriter::RecordRelocation	(	const MCAssembler &	Asm,
		const MCAsmLayout &	Layout,
		const MCFragment *	Fragment,
		const MCFixup &	Fixup,
		MCValue	Target,
		bool &	IsPCRel,
		uint64_t &	FixedValue
	)		`[override, virtual]`

Record a relocation entry.

This routine is called by the assembler after layout and relaxation, and post layout binding. The implementation is responsible for storing information about the relocation so that it can be emitted during WriteObject().

Implements llvm::MCObjectWriter.

Definition at line 452 of file MachObjectWriter.cpp.

void llvm::MachObjectWriter::RecordScatteredRelocation	(	const MCAssembler &	Asm,
		const MCAsmLayout &	Layout,
		const MCFragment *	Fragment,
		const MCFixup &	Fixup,
		MCValue	Target,
		unsigned	Log2Size,
		uint64_t &	FixedValue
	)

void llvm::MachObjectWriter::RecordTLVPRelocation	(	const MCAssembler &	Asm,
		const MCAsmLayout &	Layout,
		const MCFragment *	Fragment,
		const MCFixup &	Fixup,
		MCValue	Target,
		uint64_t &	FixedValue
	)

void MachObjectWriter::reset ( ) [override, virtual]

lifetime management

Reimplemented from llvm::MCObjectWriter.

Definition at line 31 of file MachObjectWriter.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::clear(), and llvm::SmallVectorImpl< T >::clear().

void MachObjectWriter::WriteDysymtabLoadCommand	(	uint32_t	FirstLocalSymbol,
		uint32_t	NumLocalSymbols,
		uint32_t	FirstExternalSymbol,
		uint32_t	NumExternalSymbols,
		uint32_t	FirstUndefinedSymbol,
		uint32_t	NumUndefinedSymbols,
		uint32_t	IndirectSymbolOffset,
		uint32_t	NumIndirectSymbols
	)

Definition at line 269 of file MachObjectWriter.cpp.

References llvm::MachO::LC_DYSYMTAB, llvm::MCObjectWriter::OS, llvm::raw_ostream::tell(), and llvm::MCObjectWriter::Write32().

Referenced by WriteObject().

void MachObjectWriter::WriteHeader	(	unsigned	NumLoadCommands,
		unsigned	LoadCommandsSize,
		bool	SubsectionsViaSymbols
	)

Definition at line 126 of file MachObjectWriter.cpp.

References is64Bit(), llvm::MachO::MH_MAGIC, llvm::MachO::MH_MAGIC_64, llvm::MachO::MH_OBJECT, llvm::MachO::MH_SUBSECTIONS_VIA_SYMBOLS, llvm::MCObjectWriter::OS, llvm::raw_ostream::tell(), and llvm::MCObjectWriter::Write32().

Referenced by WriteObject().

void MachObjectWriter::WriteLinkeditLoadCommand	(	uint32_t	Type,
		uint32_t	DataOffset,
		uint32_t	DataSize
	)

Definition at line 404 of file MachObjectWriter.cpp.

References llvm::MCObjectWriter::OS, llvm::raw_ostream::tell(), and llvm::MCObjectWriter::Write32().

Referenced by WriteObject().

void MachObjectWriter::WriteLinkerOptionsLoadCommand ( const std::vector< std::string > & Options )

Definition at line 427 of file MachObjectWriter.cpp.

References ComputeLinkerOptionsLoadCommandSize(), is64Bit(), llvm::MachO::LC_LINKER_OPTIONS, llvm::OffsetToAlignment(), llvm::MCObjectWriter::OS, llvm::raw_ostream::tell(), llvm::MCObjectWriter::Write32(), and llvm::MCObjectWriter::WriteBytes().

Referenced by WriteObject().

void MachObjectWriter::WriteNlist	(	MachSymbolData &	MSD,
		const MCAsmLayout &	Layout
	)

Definition at line 323 of file MachObjectWriter.cpp.

References llvm::MCSymbol::AliasedSymbol(), Align(), llvm::MCAsmLayout::getAssembler(), llvm::MCSymbolData::getCommonAlignment(), llvm::MCSymbolData::getCommonSize(), llvm::MCSymbolData::getFlags(), llvm::MCSymbol::getName(), llvm::MCSymbolData::getSymbol(), getSymbolAddress(), if(), is64Bit(), llvm::MCSymbol::isAbsolute(), llvm::MCSymbolData::isCommon(), llvm::MCSymbol::isDefined(), llvm::MCSymbolData::isExternal(), llvm::MCSymbolData::isPrivateExtern(), llvm::MCAssembler::isThumbFunc(), llvm::MCSymbol::isUndefined(), llvm::Log2_32(), llvm::MachO::N_ABS, llvm::MachO::N_EXT, llvm::MachO::N_INDR, llvm::MachO::N_PEXT, llvm::MachO::N_SECT, llvm::MachO::N_UNDF, llvm::report_fatal_error(), llvm::SF_ThumbFunc, llvm::ARMBuildAttrs::Symbol, llvm::MCObjectWriter::Write16(), llvm::MCObjectWriter::Write32(), llvm::MCObjectWriter::Write64(), and llvm::MCObjectWriter::Write8().

Referenced by WriteObject().

void MachObjectWriter::WriteObject	(	MCAssembler &	Asm,
		const MCAsmLayout &	Layout
	)		`[override, virtual]`

Write the object file.

This routine is called by the assembler after layout and relaxation is complete, fixups have been evaluated and applied, and relocations generated.

Implements llvm::MCObjectWriter.

Definition at line 770 of file MachObjectWriter.cpp.

void MachObjectWriter::WriteSection	(	const MCAssembler &	Asm,
		const MCAsmLayout &	Layout,
		const MCSectionData &	SD,
		uint64_t	FileOffset,
		uint64_t	RelocationsStart,
		unsigned	NumRelocations
	)