LLVM  13.0.0git
Public Member Functions | Static Public Member Functions | Friends | List of all members
llvm::MCSectionMachO Class Referencefinal

This represents a section on a Mach-O system (used by Mac OS X). More...

#include "llvm/MC/MCSectionMachO.h"

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Public Member Functions

StringRef getSegmentName () const
 
unsigned getTypeAndAttributes () const
 
unsigned getStubSize () const
 
MachO::SectionType getType () const
 
bool hasAttribute (unsigned Value) const
 
void PrintSwitchToSection (const MCAsmInfo &MAI, const Triple &T, raw_ostream &OS, const MCExpr *Subsection) const override
 
bool UseCodeAlign () const override
 Return true if a .align directive should use "optimized nops" to fill instead of 0s. More...
 
bool isVirtualSection () const override
 Check whether this section is "virtual", that is has no actual object file contents. More...
 
- Public Member Functions inherited from llvm::MCSection
 MCSection (const MCSection &)=delete
 
MCSectionoperator= (const MCSection &)=delete
 
StringRef getName () const
 
SectionKind getKind () const
 
SectionVariant getVariant () const
 
MCSymbolgetBeginSymbol ()
 
const MCSymbolgetBeginSymbol () const
 
void setBeginSymbol (MCSymbol *Sym)
 
MCSymbolgetEndSymbol (MCContext &Ctx)
 
bool hasEnded () const
 
unsigned getAlignment () const
 
void setAlignment (Align 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 isRegistered () const
 
void setIsRegistered (bool Value)
 
MCSection::FragmentListTypegetFragmentList ()
 
const MCSection::FragmentListTypegetFragmentList () const
 
const MCDummyFragmentgetDummyFragment () const
 
MCDummyFragmentgetDummyFragment ()
 
iterator begin ()
 
const_iterator begin () const
 
iterator end ()
 
const_iterator end () const
 
MCSection::iterator getSubsectionInsertionPoint (unsigned Subsection)
 
void dump () const
 
virtual StringRef getVirtualSectionKind () const
 
void addPendingLabel (MCSymbol *label, unsigned Subsection=0)
 Add a pending label for the requested subsection. More...
 
void flushPendingLabels (MCFragment *F, uint64_t FOffset=0, unsigned Subsection=0)
 Associate all pending labels in a subsection with a fragment. More...
 
void flushPendingLabels ()
 Associate all pending labels with empty data fragments. More...
 

Static Public Member Functions

static Error ParseSectionSpecifier (StringRef Spec, StringRef &Segment, StringRef &Section, unsigned &TAA, bool &TAAParsed, unsigned &StubSize)
 Parse the section specifier indicated by "Spec". More...
 
static bool classof (const MCSection *S)
 
- Static Public Member Functions inherited from llvm::MCSection
static FragmentListType MCSection::* getSublistAccess (MCFragment *)
 Support for MCFragment::getNextNode(). More...
 

Friends

class MCContext
 

Additional Inherited Members

- Public Types inherited from llvm::MCSection
enum  SectionVariant {
  SV_COFF = 0, SV_ELF, SV_MachO, SV_Wasm,
  SV_XCOFF
}
 
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
 
- Static Public Attributes inherited from llvm::MCSection
static constexpr unsigned NonUniqueID = ~0U
 
- Protected Member Functions inherited from llvm::MCSection
 MCSection (SectionVariant V, StringRef Name, SectionKind K, MCSymbol *Begin)
 
 ~MCSection ()
 
- Protected Attributes inherited from llvm::MCSection
StringRef Name
 
SectionVariant Variant
 
SectionKind Kind
 

Detailed Description

This represents a section on a Mach-O system (used by Mac OS X).

On a Mac system, these are also described in /usr/include/mach-o/loader.h.

Definition at line 24 of file MCSectionMachO.h.

Member Function Documentation

◆ classof()

static bool llvm::MCSectionMachO::classof ( const MCSection S)
inlinestatic

Definition at line 77 of file MCSectionMachO.h.

References S, and llvm::MCSection::SV_MachO.

◆ getSegmentName()

StringRef llvm::MCSectionMachO::getSegmentName ( ) const
inline

◆ getStubSize()

unsigned llvm::MCSectionMachO::getStubSize ( ) const
inline

Definition at line 48 of file MCSectionMachO.h.

◆ getType()

MachO::SectionType llvm::MCSectionMachO::getType ( ) const
inline

◆ getTypeAndAttributes()

unsigned llvm::MCSectionMachO::getTypeAndAttributes ( ) const
inline

Definition at line 47 of file MCSectionMachO.h.

Referenced by PrintSwitchToSection().

◆ hasAttribute()

bool llvm::MCSectionMachO::hasAttribute ( unsigned  Value) const
inline

Definition at line 54 of file MCSectionMachO.h.

Referenced by canUsePrivateLabel(), and UseCodeAlign().

◆ isVirtualSection()

bool MCSectionMachO::isVirtualSection ( ) const
overridevirtual

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

Implements llvm::MCSection.

Definition at line 166 of file MCSectionMachO.cpp.

References getType(), llvm::MachO::S_GB_ZEROFILL, llvm::MachO::S_THREAD_LOCAL_ZEROFILL, and llvm::MachO::S_ZEROFILL.

◆ ParseSectionSpecifier()

Error MCSectionMachO::ParseSectionSpecifier ( StringRef  Spec,
StringRef Segment,
StringRef Section,
unsigned &  TAA,
bool &  TAAParsed,
unsigned &  StubSize 
)
static

Parse the section specifier indicated by "Spec".

ParseSectionSpecifier - Parse the section specifier indicated by "Spec".

This is a string that can appear after a .section directive in a mach-o flavored .s file. If successful, this fills in the specified Out parameters and returns an empty string. When an invalid section specifier is present, this returns an Error indicating the problem. If no TAA was parsed, TAA is not altered, and TAAWasSet becomes false.

This is a string that can appear after a .section directive in a mach-o flavored .s file. If successful, this fills in the specified Out parameters and returns an empty string. When an invalid section specifier is present, this returns a string indicating the problem.

Definition at line 177 of file MCSectionMachO.cpp.

References Attrs, llvm::sys::path::begin(), llvm::createStringError(), llvm::StringRef::empty(), llvm::Function::empty(), llvm::sys::path::end(), llvm::find_if(), llvm::StringRef::getAsInteger(), llvm::inconvertibleErrorCode(), llvm::MachO::S_SYMBOL_STUBS, llvm::ARMBuildAttrs::Section, llvm::MachO::SECTION_TYPE, SectionAttrDescriptors, SectionTypeDescriptors, llvm::StringRef::split(), and llvm::Error::success().

Referenced by llvm::TargetLoweringObjectFileMachO::emitModuleMetadata(), and llvm::TargetLoweringObjectFileMachO::getExplicitSectionGlobal().

◆ PrintSwitchToSection()

void MCSectionMachO::PrintSwitchToSection ( const MCAsmInfo MAI,
const Triple T,
raw_ostream OS,
const MCExpr Subsection 
) const
overridevirtual

◆ UseCodeAlign()

bool MCSectionMachO::UseCodeAlign ( ) const
overridevirtual

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

Implements llvm::MCSection.

Definition at line 162 of file MCSectionMachO.cpp.

References hasAttribute(), and llvm::MachO::S_ATTR_PURE_INSTRUCTIONS.

Friends And Related Function Documentation

◆ MCContext

friend class MCContext
friend

Definition at line 37 of file MCSectionMachO.h.


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