class MCSectionMachO

Declaration

class MCSectionMachO : public MCSection { /* full declaration omitted */ };

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.

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:24

Inherits from: MCSection

Member Variables

private char[16] SegmentName

private unsigned int TypeAndAttributes

This is the SECTION_TYPE and SECTION_ATTRIBUTES field of a section, drawn from the enums below.

private unsigned int Reserved2

The 'reserved2' field of a section, used to represent the size of stubs, for example.

Inherited from MCSection:

protected Name

protected Variant

protected Kind

public static NonUniqueID = ~0U

Method Overview

• private MCSectionMachO(llvm::StringRef Segment, llvm::StringRef Section, unsigned int TAA, unsigned int reserved2, llvm::SectionKind K, llvm::MCSymbol * Begin)
• public static llvm::Error ParseSectionSpecifier(llvm::StringRef Spec, llvm::StringRef & Segment, llvm::StringRef & Section, unsigned int & TAA, bool & TAAParsed, unsigned int & StubSize)
• public static bool classof(const llvm::MCSection * S)
• public llvm::StringRef getSegmentName() const
• public unsigned int getStubSize() const
• public MachO::SectionType getType() const
• public unsigned int getTypeAndAttributes() const
• public bool hasAttribute(unsigned int Value) const
• public bool isVirtualSection() const
• public void printSwitchToSection(const llvm::MCAsmInfo & MAI, const llvm::Triple & T, llvm::raw_ostream & OS, const llvm::MCExpr * Subsection) const
• public bool useCodeAlign() const

Inherited from MCSection:

• public addPendingLabel
• public begin
• public begin
• public dump
• public end
• public end
• public flushPendingLabels
• public flushPendingLabels
• public getAlignment
• public getBeginSymbol
• public getBeginSymbol
• public getBundleLockState
• public getDummyFragment
• public getDummyFragment
• public getEndSymbol
• public getFragmentList
• public getFragmentList
• public getKind
• public getLayoutOrder
• public getName
• public getOrdinal
• public getSublistAccess
• public getSubsectionInsertionPoint
• public getVariant
• public getVirtualSectionKind
• public hasEnded
• public hasInstructions
• public isBundleGroupBeforeFirstInst
• public isBundleLocked
• public isRegistered
• public isVirtualSection
• public printSwitchToSection
• public setAlignment
• public setBeginSymbol
• public setBundleGroupBeforeFirstInst
• public setBundleLockState
• public setHasInstructions
• public setIsRegistered
• public setLayoutOrder
• public setOrdinal
• public useCodeAlign

Methods

¶MCSectionMachO(llvm::StringRef Segment,
               llvm::StringRef Section,
               unsigned int TAA,
               unsigned int reserved2,
               llvm::SectionKind K,
               llvm::MCSymbol* Begin)

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:35

Parameters

llvm::StringRef Segment

llvm::StringRef Section

unsigned int TAA

unsigned int reserved2

llvm::SectionKind K

llvm::MCSymbol* Begin

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

Description

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.

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:64

Parameters

llvm::StringRef Spec

llvm::StringRef& Segment

llvm::StringRef& Section

unsigned int& TAA

bool& TAAParsed

unsigned int& StubSize

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

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:77

Parameters

const llvm::MCSection* S

¶llvm::StringRef getSegmentName() const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:40

¶unsigned int getStubSize() const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:48

¶MachO::SectionType getType() const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:50

¶unsigned int getTypeAndAttributes() const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:47

¶bool hasAttribute(unsigned int Value) const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:54

Parameters

unsigned int Value

¶bool isVirtualSection() const

Description

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

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:75

¶void printSwitchToSection(
    const llvm::MCAsmInfo& MAI,
    const llvm::Triple& T,
    llvm::raw_ostream& OS,
    const llvm::MCExpr* Subsection) const

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:71

Parameters

const llvm::MCAsmInfo& MAI

const llvm::Triple& T

llvm::raw_ostream& OS

const llvm::MCExpr* Subsection

¶bool useCodeAlign() const

Description

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

Declared at: llvm/include/llvm/MC/MCSectionMachO.h:74