llvm::MCSection Class Reference

Instances of this class represent a uniqued identifier for a section in the current translation unit. More...

#include "llvm/MC/MCSection.h"

Inheritance diagram for llvm::MCSection:

Collaboration diagram for llvm::MCSection:

Public Types
enum	SectionVariant { SV_COFF = 0, SV_ELF, SV_MachO, SV_Wasm }
enum	BundleLockStateType { NotBundleLocked, BundleLocked, BundleLockedAlignToEnd }
	Express the state of bundle locked groups while emitting code. More...
using	FragmentListType = iplist< MCFragment >
using	const_iterator = FragmentListType::const_iterator
using	iterator = FragmentListType::iterator
using	const_reverse_iterator = FragmentListType::const_reverse_iterator
using	reverse_iterator = FragmentListType::reverse_iterator

Public Member Functions
	MCSection (const MCSection &)=delete
MCSection &	operator= (const MCSection &)=delete
SectionKind	getKind () const
SectionVariant	getVariant () const
MCSymbol *	getBeginSymbol ()
const MCSymbol *	getBeginSymbol () const
void	setBeginSymbol (MCSymbol *Sym)
MCSymbol *	getEndSymbol (MCContext &Ctx)
bool	hasEnded () const
unsigned	getAlignment () const
void	setAlignment (unsigned Value)
unsigned	getOrdinal () const
void	setOrdinal (unsigned Value)
unsigned	getLayoutOrder () const
void	setLayoutOrder (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	hasData () const
void	setHasData (bool Value)
bool	isRegistered () const
void	setIsRegistered (bool Value)
MCSection::FragmentListType &	getFragmentList ()
const MCSection::FragmentListType &	getFragmentList () const
const MCDummyFragment &	getDummyFragment () const
MCDummyFragment &	getDummyFragment ()
iterator	begin ()
const_iterator	begin () const
iterator	end ()
const_iterator	end () const
reverse_iterator	rbegin ()
const_reverse_iterator	rbegin () const
reverse_iterator	rend ()
const_reverse_iterator	rend () const
MCSection::iterator	getSubsectionInsertionPoint (unsigned Subsection)
void	dump () const
virtual void	PrintSwitchToSection (const MCAsmInfo &MAI, const Triple &T, raw_ostream &OS, const MCExpr *Subsection) const =0
virtual bool	UseCodeAlign () const =0
	Return true if a .align directive should use "optimized nops" to fill instead of 0s. More...
virtual bool	isVirtualSection () const =0
	Check whether this section is "virtual", that is has no actual object file contents. More...

Static Public Member Functions
static FragmentListType MCSection::*	getSublistAccess (MCFragment *)
	Support for MCFragment::getNextNode(). More...

Protected Member Functions
	MCSection (SectionVariant V, SectionKind K, MCSymbol *Begin)
	~MCSection ()

Protected Attributes
SectionVariant	Variant
SectionKind	Kind

Detailed Description

Instances of this class represent a uniqued identifier for a section in the current translation unit.

The MCContext class uniques and creates these.

Definition at line 39 of file MCSection.h.

Member Typedef Documentation

const_iterator

using llvm::MCSection::const_iterator = FragmentListType::const_iterator

Definition at line 52 of file MCSection.h.

const_reverse_iterator

using llvm::MCSection::const_reverse_iterator = FragmentListType::const_reverse_iterator

Definition at line 55 of file MCSection.h.

FragmentListType

using llvm::MCSection::FragmentListType = iplist<MCFragment>

Definition at line 50 of file MCSection.h.

iterator

using llvm::MCSection::iterator = FragmentListType::iterator

Definition at line 53 of file MCSection.h.

reverse_iterator

using llvm::MCSection::reverse_iterator = FragmentListType::reverse_iterator

Definition at line 56 of file MCSection.h.

Member Enumeration Documentation

BundleLockStateType

enum llvm::MCSection::BundleLockStateType

Express the state of bundle locked groups while emitting code.

Enumerator
NotBundleLocked
BundleLocked
BundleLockedAlignToEnd

Definition at line 44 of file MCSection.h.

SectionVariant

enum llvm::MCSection::SectionVariant

Enumerator
SV_COFF
SV_ELF
SV_MachO
SV_Wasm

Definition at line 41 of file MCSection.h.

Constructor & Destructor Documentation

MCSection() [1/2]

MCSection::MCSection ( SectionVariant  V, SectionKind  K, MCSymbol *  Begin  )

protected

Definition at line 24 of file MCSection.cpp.

~MCSection()

MCSection::~MCSection ( )

protecteddefault

Referenced by hasEnded().

MCSection() [2/2]

llvm::MCSection::MCSection ( const MCSection &  )

delete

Member Function Documentation

begin() [1/2]

iterator llvm::MCSection::begin ( )

inline

Definition at line 163 of file MCSection.h.

Referenced by dump(), llvm::MCAssembler::Finish(), and llvm::MCContext::getWasmSection().

begin() [2/2]

const_iterator llvm::MCSection::begin ( ) const

inline

Definition at line 164 of file MCSection.h.

dump()

LLVM_DUMP_METHOD void MCSection::dump

(

)

const

Definition at line 91 of file MCSection.cpp.

References begin(), end(), and llvm::errs().

end() [1/2]

iterator llvm::MCSection::end ( )

inline

Definition at line 166 of file MCSection.h.

Referenced by dump(), llvm::MCAssembler::Finish(), and getSubsectionInsertionPoint().

end() [2/2]

const_iterator llvm::MCSection::end ( ) const

inline

Definition at line 167 of file MCSection.h.

getAlignment()

unsigned llvm::MCSection::getAlignment ( ) const

inline

Definition at line 121 of file MCSection.h.

Referenced by addData(), llvm::MCWinCOFFStreamer::EmitCOFFSafeSEH(), llvm::MCWinCOFFStreamer::EmitCOFFSymbolIndex(), llvm::MCELFStreamer::EmitCommonSymbol(), llvm::MCObjectStreamer::EmitValueToAlignment(), llvm::MipsTargetELFStreamer::finish(), getAlignment(), llvm::MachObjectWriter::getPaddingSize(), isWeak(), llvm::MCCodePadder::relaxFragment(), and setSectionAlignmentForBundling().

getBeginSymbol() [1/2]

MCSymbol* llvm::MCSection::getBeginSymbol ( )

inline

Definition at line 110 of file MCSection.h.

Referenced by llvm::DwarfCompileUnit::addAddrTableBase(), llvm::DwarfTypeUnit::addGlobalType(), llvm::DwarfCompileUnit::addScopeRangeList(), llvm::DwarfUnit::addStringOffsetsStart(), llvm::DwarfDebug::beginModule(), canGoAfterDWARF(), llvm::MCELFStreamer::ChangeSection(), llvm::MCWasmStreamer::ChangeSection(), computeIndexValue(), llvm::MCContext::createELFRelSection(), llvm::DwarfUnit::emitCommonHeader(), llvm::AsmPrinter::emitDwarfSymbolReference(), llvm::MCELFStreamer::EmitIdent(), llvm::DwarfDebug::endFunctionImpl(), llvm::MCObjectFileInfo::getStackSizesSection(), hasPrefix(), llvm::DwarfCompileUnit::initStmtList(), isWeak(), llvm::MCDwarfLineStr::MCDwarfLineStr(), llvm::MCContext::renameELFSection(), and llvm::MCStreamer::SwitchSection().

getBeginSymbol() [2/2]

const MCSymbol* llvm::MCSection::getBeginSymbol ( ) const

inline

Definition at line 111 of file MCSection.h.

getBundleLockState()

BundleLockStateType llvm::MCSection::getBundleLockState ( ) const

inline

Definition at line 130 of file MCSection.h.

Referenced by CheckBundleSubtargets(), and llvm::MCELFStreamer::EmitBundleUnlock().

getDummyFragment() [1/2]

const MCDummyFragment& llvm::MCSection::getDummyFragment ( ) const

inline

Definition at line 160 of file MCSection.h.

Referenced by getPlatformName().

getDummyFragment() [2/2]

MCDummyFragment& llvm::MCSection::getDummyFragment ( )

inline

Definition at line 161 of file MCSection.h.

getEndSymbol()

MCSymbol * MCSection::getEndSymbol

(

MCContext &

Ctx

)

Definition at line 29 of file MCSection.cpp.

References llvm::MCContext::createTempSymbol().

Referenced by llvm::MCStreamer::endSection().

getFragmentList() [1/2]

MCSection::FragmentListType& llvm::MCSection::getFragmentList ( )

inline

Definition at line 150 of file MCSection.h.

Referenced by llvm::MCObjectStreamer::flushPendingLabels(), llvm::MCAsmLayout::getSectionAddressSize(), getSubsectionInsertionPoint(), llvm::MCContext::getWasmSection(), llvm::MCObjectStreamer::insert(), llvm::MCAssembler::layout(), and llvm::MCFragment::MCFragment().

getFragmentList() [2/2]

const MCSection::FragmentListType& llvm::MCSection::getFragmentList ( ) const

inline

Definition at line 151 of file MCSection.h.

getKind()

SectionKind llvm::MCSection::getKind ( ) const

inline

Definition at line 106 of file MCSection.h.

References Kind.

Referenced by llvm::MCContext::getAssociativeCOFFSection(), isDwarfSection(), and llvm::MCSectionCOFF::UseCodeAlign().

getLayoutOrder()

unsigned llvm::MCSection::getLayoutOrder ( ) const

inline

Definition at line 127 of file MCSection.h.

Referenced by llvm::MachObjectWriter::getPaddingSize().

getOrdinal()

unsigned llvm::MCSection::getOrdinal ( ) const

inline

Definition at line 124 of file MCSection.h.

Referenced by canUseLocalRelocation(), getARMFixupKindMachOInfo(), getFixupKindLog2Size(), and getFixupOffset().

getSublistAccess()

static FragmentListType MCSection::* llvm::MCSection::getSublistAccess ( MCFragment *  )

inlinestatic

Support for MCFragment::getNextNode().

Definition at line 156 of file MCSection.h.

getSubsectionInsertionPoint()

MCSection::iterator MCSection::getSubsectionInsertionPoint

(

unsigned

Subsection

)

Definition at line 59 of file MCSection.cpp.

References end(), F(), getFragmentList(), llvm::iplist_impl< IntrusiveListT, TraitsT >::insert(), llvm::lower_bound(), MI, and llvm::MCFragment::setParent().

Referenced by llvm::MCObjectStreamer::changeSectionImpl().

getVariant()

SectionVariant llvm::MCSection::getVariant ( ) const

inline

Definition at line 108 of file MCSection.h.

Referenced by llvm::MCSectionWasm::classof(), llvm::MCSectionMachO::classof(), llvm::MCSectionELF::classof(), llvm::MCSectionCOFF::classof(), and getPlatformName().

hasData()

bool llvm::MCSection::hasData ( ) const

inline

Definition at line 144 of file MCSection.h.

hasEnded()

bool MCSection::hasEnded

(

)

const

Definition at line 35 of file MCSection.cpp.

References llvm::MCSymbol::isInSection(), and ~MCSection().

Referenced by llvm::MCStreamer::SwitchSection().

hasInstructions()

bool llvm::MCSection::hasInstructions ( ) const

inline

Definition at line 141 of file MCSection.h.

Referenced by llvm::MCObjectStreamer::mayHaveInstructions(), and setSectionAlignmentForBundling().

isBundleGroupBeforeFirstInst()

bool llvm::MCSection::isBundleGroupBeforeFirstInst ( ) const

inline

Definition at line 134 of file MCSection.h.

Referenced by CheckBundleSubtargets(), and llvm::MCELFStreamer::EmitBundleUnlock().

isBundleLocked()

bool llvm::MCSection::isBundleLocked ( ) const

inline

Definition at line 132 of file MCSection.h.

Referenced by llvm::MCObjectStreamer::EmitInstruction(), and llvm::MCELFStreamer::MCELFStreamer().

isRegistered()

bool llvm::MCSection::isRegistered ( ) const

inline

Definition at line 147 of file MCSection.h.

Referenced by isWeak(), and llvm::MCAssembler::registerSection().

isVirtualSection()

virtual bool llvm::MCSection::isVirtualSection ( ) const

pure virtual

Check whether this section is "virtual", that is has no actual object file contents.

Implemented in llvm::MCSectionELF, llvm::MCSectionCOFF, llvm::MCSectionMachO, and llvm::MCSectionWasm.

Referenced by llvm::AsmPrinter::EmitGlobalVariable(), llvm::MachObjectWriter::getPaddingSize(), llvm::MCAsmLayout::getSectionFileSize(), and llvm::MCAssembler::writeSectionData().

operator=()

MCSection& llvm::MCSection::operator= ( const MCSection &  )

delete

PrintSwitchToSection()

virtual void llvm::MCSection::PrintSwitchToSection ( const MCAsmInfo &  MAI, const Triple &  T, raw_ostream &  OS, const MCExpr *  Subsection  ) const

pure virtual

Implemented in llvm::MCSectionELF, llvm::MCSectionCOFF, llvm::MCSectionMachO, and llvm::MCSectionWasm.

Referenced by llvm::NVPTXTargetStreamer::changeSection(), llvm::MCTargetStreamer::changeSection(), and truncateToSize().

rbegin() [1/2]

reverse_iterator llvm::MCSection::rbegin ( )

inline

Definition at line 169 of file MCSection.h.

Referenced by llvm::MCAssembler::Finish().

rbegin() [2/2]

const_reverse_iterator llvm::MCSection::rbegin ( ) const

inline

Definition at line 170 of file MCSection.h.

rend() [1/2]

reverse_iterator llvm::MCSection::rend ( )

inline

Definition at line 172 of file MCSection.h.

rend() [2/2]

const_reverse_iterator llvm::MCSection::rend ( ) const

inline

Definition at line 173 of file MCSection.h.

References llvm::dump().

setAlignment()

void llvm::MCSection::setAlignment ( unsigned  Value )

inline

Definition at line 122 of file MCSection.h.

Referenced by llvm::MCWinCOFFStreamer::EmitCOFFSafeSEH(), llvm::MCWinCOFFStreamer::EmitCOFFSymbolIndex(), llvm::MCELFStreamer::EmitCommonSymbol(), llvm::MipsTargetELFStreamer::emitDirectiveEnd(), llvm::MipsTargetELFStreamer::emitMipsAbiFlags(), llvm::MipsRegInfoRecord::EmitMipsOptionRecord(), llvm::MCObjectStreamer::EmitValueToAlignment(), llvm::MipsTargetELFStreamer::finish(), isWeak(), and setSectionAlignmentForBundling().

setBeginSymbol()

void llvm::MCSection::setBeginSymbol ( MCSymbol *  Sym )

inline

Definition at line 114 of file MCSection.h.

References assert().

Referenced by canGoAfterDWARF(), and hasPrefix().

setBundleGroupBeforeFirstInst()

void llvm::MCSection::setBundleGroupBeforeFirstInst ( bool  IsFirst )

inline

Definition at line 137 of file MCSection.h.

Referenced by CheckBundleSubtargets(), and llvm::MCELFStreamer::EmitBundleLock().

setBundleLockState()

void MCSection::setBundleLockState

(

BundleLockStateType

NewState

)

Definition at line 39 of file MCSection.cpp.

References BundleLockedAlignToEnd, NotBundleLocked, and llvm::report_fatal_error().

Referenced by llvm::MCELFStreamer::EmitBundleLock(), and llvm::MCELFStreamer::EmitBundleUnlock().

setHasData()

void llvm::MCSection::setHasData ( bool  Value )

inline

Definition at line 145 of file MCSection.h.

Referenced by llvm::MCObjectStreamer::EmitBytes().

setHasInstructions()

void llvm::MCSection::setHasInstructions ( bool  Value )

inline

Definition at line 142 of file MCSection.h.

Referenced by llvm::MCObjectStreamer::EmitInstruction().

setIsRegistered()

void llvm::MCSection::setIsRegistered ( bool  Value )

inline

Definition at line 148 of file MCSection.h.

Referenced by llvm::MCAssembler::registerSection().

setLayoutOrder()

void llvm::MCSection::setLayoutOrder ( unsigned  Value )

inline

Definition at line 128 of file MCSection.h.

Referenced by llvm::MCAssembler::layout().

setOrdinal()

void llvm::MCSection::setOrdinal ( unsigned  Value )

inline

Definition at line 125 of file MCSection.h.

Referenced by llvm::MCAssembler::layout().

UseCodeAlign()

virtual bool llvm::MCSection::UseCodeAlign ( ) const

pure virtual

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

Implemented in llvm::MCSectionELF, llvm::MCSectionCOFF, llvm::MCSectionMachO, and llvm::MCSectionWasm.

Referenced by getPrefixes(), llvm::IsCPSRDead< MCInst >(), and parseHexOcta().

Member Data Documentation

Kind

SectionKind llvm::MCSection::Kind

protected

Definition at line 97 of file MCSection.h.

Referenced by llvm::MCSectionWasm::isWasmData().

Variant

SectionVariant llvm::MCSection::Variant

protected

Definition at line 96 of file MCSection.h.

---

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

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