llvm::MCSectionELF Class Reference

This represents a section on linux, lots of unix variants and some bare metal systems. More...

#include "llvm/MC/MCSectionELF.h"

Inheritance diagram for llvm::MCSectionELF:

Public Member Functions
bool	shouldOmitSectionDirective (StringRef Name, const MCAsmInfo &MAI) const
	Decides whether a '.section' directive should be printed before the section name.
unsigned	getType () const
unsigned	getFlags () const
unsigned	getEntrySize () const
void	setFlags (unsigned F)
const MCSymbolELF *	getGroup () const
bool	isComdat () const
void	printSwitchToSection (const MCAsmInfo &MAI, const Triple &T, raw_ostream &OS, uint32_t Subsection) const override
bool	useCodeAlign () const override
	Return true if a .align directive should use "optimized nops" to fill instead of 0s.
StringRef	getVirtualSectionKind () const override
bool	isUnique () const
unsigned	getUniqueID () const
const MCSection *	getLinkedToSection () const
const MCSymbol *	getLinkedToSymbol () const
void	setOffsets (uint64_t Start, uint64_t End)
std::pair< uint64_t, uint64_t >	getOffsets () const
Public Member Functions inherited from llvm::MCSection
	MCSection (const MCSection &)=delete
MCSection &	operator= (const MCSection &)=delete
StringRef	getName () const
bool	isText () const
SectionVariant	getVariant () const
MCSymbol *	getBeginSymbol ()
const MCSymbol *	getBeginSymbol () const
void	setBeginSymbol (MCSymbol *Sym)
MCSymbol *	getEndSymbol (MCContext &Ctx)
bool	hasEnded () const
Align	getAlign () const
void	setAlignment (Align Value)
void	ensureMinAlignment (Align MinAlignment)
	Makes sure that Alignment is at least MinAlignment.
unsigned	getOrdinal () const
void	setOrdinal (unsigned Value)
BundleLockStateType	getBundleLockState () const
void	setBundleLockState (BundleLockStateType NewState)
bool	isBundleLocked () const
bool	isBundleGroupBeforeFirstInst () const
void	setBundleGroupBeforeFirstInst (bool IsFirst)
bool	hasInstructions () const
void	setHasInstructions (bool Value)
bool	hasLayout () const
void	setHasLayout (bool Value)
bool	isRegistered () const
void	setIsRegistered (bool Value)
const MCDummyFragment &	getDummyFragment () const
MCDummyFragment &	getDummyFragment ()
FragList *	curFragList () const
iterator	begin () const
iterator	end () const
bool	empty () const
void	dump () const
virtual void	printSwitchToSection (const MCAsmInfo &MAI, const Triple &T, raw_ostream &OS, uint32_t Subsection) const =0
virtual bool	useCodeAlign () const =0
	Return true if a .align directive should use "optimized nops" to fill instead of 0s.
bool	isVirtualSection () const
	Check whether this section is "virtual", that is has no actual object file contents.
virtual StringRef	getVirtualSectionKind () const

Static Public Member Functions
static bool	classof (const MCSection *S)

Friends
class	MCContext

Additional Inherited Members
Public Types inherited from llvm::MCSection
enum	SectionVariant {   SV_COFF = 0 , SV_ELF , SV_GOFF , SV_MachO ,   SV_Wasm , SV_XCOFF , SV_SPIRV , SV_DXContainer }
enum	BundleLockStateType { NotBundleLocked , BundleLocked , BundleLockedAlignToEnd }
	Express the state of bundle locked groups while emitting code. More...
Public Attributes inherited from llvm::MCSection
friend	MCAssembler
friend	MCObjectStreamer
Static Public Attributes inherited from llvm::MCSection
static constexpr unsigned	NonUniqueID = ~0U
Protected Member Functions inherited from llvm::MCSection
	MCSection (SectionVariant V, StringRef Name, bool IsText, bool IsVirtual, MCSymbol *Begin)
	~MCSection ()
Protected Attributes inherited from llvm::MCSection
StringRef	Name
SectionVariant	Variant

Detailed Description

This represents a section on linux, lots of unix variants and some bare metal systems.

Definition at line 27 of file MCSectionELF.h.

Member Function Documentation

classof()

static bool llvm::MCSectionELF::classof ( const MCSection *  S )

inlinestatic

Definition at line 107 of file MCSectionELF.h.

References llvm::MCSection::getVariant(), and llvm::MCSection::SV_ELF.

getEntrySize()

unsigned llvm::MCSectionELF::getEntrySize ( ) const

inline

Definition at line 80 of file MCSectionELF.h.

getFlags()

unsigned llvm::MCSectionELF::getFlags ( ) const

inline

Definition at line 79 of file MCSectionELF.h.

Referenced by llvm::ELFObjectWriter::shouldRelocateWithSymbol(), and useCodeAlign().

getGroup()

const MCSymbolELF * llvm::MCSectionELF::getGroup ( ) const

inline

Definition at line 82 of file MCSectionELF.h.

References llvm::PointerIntPair< PointerTy, IntBits, IntType, PtrTraits, Info >::getPointer().

Referenced by llvm::MCObjectFileInfo::getBBAddrMapSection(), llvm::MCObjectFileInfo::getKCFITrapSection(), and llvm::MCObjectFileInfo::getStackSizesSection().

getLinkedToSection()

const MCSection * llvm::MCSectionELF::getLinkedToSection ( ) const

inline

Definition at line 94 of file MCSectionELF.h.

References llvm::MCSymbol::getSection().

getLinkedToSymbol()

const MCSymbol * llvm::MCSectionELF::getLinkedToSymbol ( ) const

inline

Definition at line 97 of file MCSectionELF.h.

getOffsets()

std::pair< uint64_t, uint64_t > llvm::MCSectionELF::getOffsets ( ) const

inline

Definition at line 103 of file MCSectionELF.h.

getType()

unsigned llvm::MCSectionELF::getType ( ) const

inline

Definition at line 78 of file MCSectionELF.h.

References Type.

Referenced by llvm::ELFObjectWriter::usesRela().

getUniqueID()

unsigned llvm::MCSectionELF::getUniqueID ( ) const

inline

Definition at line 92 of file MCSectionELF.h.

Referenced by llvm::MCObjectFileInfo::getBBAddrMapSection(), llvm::MCObjectFileInfo::getKCFITrapSection(), and llvm::MCObjectFileInfo::getStackSizesSection().

getVirtualSectionKind()

StringRef MCSectionELF::getVirtualSectionKind ( ) const

overridevirtual

Reimplemented from llvm::MCSection.

Definition at line 213 of file MCSectionELF.cpp.

isComdat()

bool llvm::MCSectionELF::isComdat ( ) const

inline

Definition at line 83 of file MCSectionELF.h.

References llvm::PointerIntPair< PointerTy, IntBits, IntType, PtrTraits, Info >::getInt().

Referenced by printSwitchToSection().

isUnique()

bool llvm::MCSectionELF::isUnique ( ) const

inline

Definition at line 91 of file MCSectionELF.h.

References llvm::MCSection::NonUniqueID.

Referenced by printSwitchToSection(), and shouldOmitSectionDirective().

printSwitchToSection()

void MCSectionELF::printSwitchToSection ( const MCAsmInfo &  MAI, const Triple &  T, raw_ostream &  OS, uint32_t  Subsection  ) const

overridevirtual

Implements llvm::MCSection.

Definition at line 53 of file MCSectionELF.cpp.

References assert(), llvm::MCAsmInfo::getCommentString(), llvm::MCSection::getName(), llvm::MCSymbol::getName(), llvm::Triple::hexagon, isComdat(), isUnique(), OS, printName(), llvm::ELF::SHF_ALLOC, llvm::ELF::SHF_ARM_PURECODE, llvm::ELF::SHF_EXCLUDE, llvm::ELF::SHF_EXECINSTR, llvm::ELF::SHF_GNU_RETAIN, llvm::ELF::SHF_GROUP, llvm::ELF::SHF_HEX_GPREL, llvm::ELF::SHF_LINK_ORDER, llvm::ELF::SHF_MERGE, llvm::ELF::SHF_STRINGS, llvm::ELF::SHF_SUNW_NODISCARD, llvm::ELF::SHF_TLS, llvm::ELF::SHF_WRITE, llvm::ELF::SHF_X86_64_LARGE, shouldOmitSectionDirective(), llvm::ELF::SHT_FINI_ARRAY, llvm::ELF::SHT_INIT_ARRAY, llvm::ELF::SHT_LLVM_BB_ADDR_MAP, llvm::ELF::SHT_LLVM_BB_ADDR_MAP_V0, llvm::ELF::SHT_LLVM_CALL_GRAPH_PROFILE, llvm::ELF::SHT_LLVM_DEPENDENT_LIBRARIES, llvm::ELF::SHT_LLVM_LINKER_OPTIONS, llvm::ELF::SHT_LLVM_LTO, llvm::ELF::SHT_LLVM_ODRTAB, llvm::ELF::SHT_LLVM_OFFLOADING, llvm::ELF::SHT_LLVM_SYMPART, llvm::ELF::SHT_MIPS_DWARF, llvm::ELF::SHT_NOBITS, llvm::ELF::SHT_NOTE, llvm::ELF::SHT_PREINIT_ARRAY, llvm::ELF::SHT_PROGBITS, llvm::ELF::SHT_X86_64_UNWIND, llvm::MCAsmInfo::usesSunStyleELFSectionSwitchSyntax(), llvm::Twine::utohexstr(), llvm::Triple::x86_64, llvm::Triple::xcore, llvm::ELF::XCORE_SHF_CP_SECTION, and llvm::ELF::XCORE_SHF_DP_SECTION.

setFlags()

void llvm::MCSectionELF::setFlags ( unsigned  F )

inline

Definition at line 81 of file MCSectionELF.h.

References F.

setOffsets()

void llvm::MCSectionELF::setOffsets ( uint64_t  Start, uint64_t  End  )

inline

Definition at line 99 of file MCSectionELF.h.

References End.

shouldOmitSectionDirective()

bool MCSectionELF::shouldOmitSectionDirective	(	StringRef	Name,
		const MCAsmInfo &	MAI
	)		const

Decides whether a '.section' directive should be printed before the section name.

Definition at line 22 of file MCSectionELF.cpp.

References isUnique(), llvm::MCSection::Name, and llvm::MCAsmInfo::shouldOmitSectionDirective().

Referenced by printSwitchToSection().

useCodeAlign()

bool MCSectionELF::useCodeAlign ( ) const

overridevirtual

Return true if a .align directive should use "optimized nops" to fill instead of 0s.

Implements llvm::MCSection.

Definition at line 209 of file MCSectionELF.cpp.

References getFlags(), and llvm::ELF::SHF_EXECINSTR.

Friends And Related Function Documentation

MCContext

friend class MCContext

friend

Definition at line 54 of file MCSectionELF.h.

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

• include/llvm/MC/MCSectionELF.h
• lib/MC/MCSectionELF.cpp