#include <MCSectionMachO.h>

Inheritance diagram for llvm::MCSectionMachO:

Collaboration diagram for llvm::MCSectionMachO:

Public Types
enum	{ SECTION_TYPE = 0x000000FFU, SECTION_ATTRIBUTES = 0xFFFFFF00U, S_REGULAR = 0x00U, S_ZEROFILL = 0x01U, S_CSTRING_LITERALS = 0x02U, S_4BYTE_LITERALS = 0x03U, S_8BYTE_LITERALS = 0x04U, S_LITERAL_POINTERS = 0x05U, S_NON_LAZY_SYMBOL_POINTERS = 0x06U, S_LAZY_SYMBOL_POINTERS = 0x07U, S_SYMBOL_STUBS = 0x08U, S_MOD_INIT_FUNC_POINTERS = 0x09U, S_MOD_TERM_FUNC_POINTERS = 0x0AU, S_COALESCED = 0x0BU, S_GB_ZEROFILL = 0x0CU, S_INTERPOSING = 0x0DU, S_16BYTE_LITERALS = 0x0EU, S_DTRACE_DOF = 0x0FU, S_LAZY_DYLIB_SYMBOL_POINTERS = 0x10U, S_THREAD_LOCAL_REGULAR = 0x11U, S_THREAD_LOCAL_ZEROFILL = 0x12U, S_THREAD_LOCAL_VARIABLES = 0x13U, S_THREAD_LOCAL_VARIABLE_POINTERS = 0x14U, S_THREAD_LOCAL_INIT_FUNCTION_POINTERS = 0x15U, LAST_KNOWN_SECTION_TYPE = S_THREAD_LOCAL_INIT_FUNCTION_POINTERS, S_ATTR_PURE_INSTRUCTIONS = 1U << 31, S_ATTR_NO_TOC = 1U << 30, S_ATTR_STRIP_STATIC_SYMS = 1U << 29, S_ATTR_NO_DEAD_STRIP = 1U << 28, S_ATTR_LIVE_SUPPORT = 1U << 27, S_ATTR_SELF_MODIFYING_CODE = 1U << 26, S_ATTR_DEBUG = 1U << 25, S_ATTR_SOME_INSTRUCTIONS = 1U << 10, S_ATTR_EXT_RELOC = 1U << 9, S_ATTR_LOC_RELOC = 1U << 8 }
Public Member Functions
StringRef	getSegmentName () const
StringRef	getSectionName () const
virtual std::string	getLabelBeginName () const
virtual std::string	getLabelEndName () const
unsigned	getTypeAndAttributes () const
unsigned	getStubSize () const
unsigned	getType () const
bool	hasAttribute (unsigned Value) const
virtual void	PrintSwitchToSection (const MCAsmInfo &MAI, raw_ostream &OS, const MCExpr *Subsection) const
virtual bool	UseCodeAlign () const
virtual bool	isVirtualSection () const
Static Public Member Functions
static std::string	ParseSectionSpecifier (StringRef Spec, StringRef &Segment, StringRef &Section, unsigned &TAA, bool &TAAParsed, unsigned &StubSize)
static bool	classof (const MCSection *S)
Friends
class	MCContext

Detailed Description

MCSectionMachO - 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 25 of file MCSectionMachO.h.

Member Enumeration Documentation

anonymous enum

These are the section type and attributes fields. A MachO section can have only one Type, but can have any of the attributes specified.

Enumerator:

SECTION_TYPE
SECTION_ATTRIBUTES
S_REGULAR	S_REGULAR - Regular section.
S_ZEROFILL	S_ZEROFILL - Zero fill on demand section.
S_CSTRING_LITERALS	S_CSTRING_LITERALS - Section with literal C strings.
S_4BYTE_LITERALS	S_4BYTE_LITERALS - Section with 4 byte literals.
S_8BYTE_LITERALS	S_8BYTE_LITERALS - Section with 8 byte literals.
S_LITERAL_POINTERS	S_LITERAL_POINTERS - Section with pointers to literals.
S_NON_LAZY_SYMBOL_POINTERS	S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
S_LAZY_SYMBOL_POINTERS	S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
S_SYMBOL_STUBS	S_SYMBOL_STUBS - Section with symbol stubs, byte size of stub in the Reserved2 field.
S_MOD_INIT_FUNC_POINTERS	S_MOD_INIT_FUNC_POINTERS - Section with only function pointers for initialization.
S_MOD_TERM_FUNC_POINTERS	S_MOD_TERM_FUNC_POINTERS - Section with only function pointers for termination.
S_COALESCED	S_COALESCED - Section contains symbols that are to be coalesced.
S_GB_ZEROFILL	S_GB_ZEROFILL - Zero fill on demand section (that can be larger than 4 gigabytes).
S_INTERPOSING	S_INTERPOSING - Section with only pairs of function pointers for interposing.
S_16BYTE_LITERALS	S_16BYTE_LITERALS - Section with only 16 byte literals.
S_DTRACE_DOF	S_DTRACE_DOF - Section contains DTrace Object Format.
S_LAZY_DYLIB_SYMBOL_POINTERS	S_LAZY_DYLIB_SYMBOL_POINTERS - Section with lazy symbol pointers to lazy loaded dylibs.
S_THREAD_LOCAL_REGULAR	S_THREAD_LOCAL_REGULAR - Section with ....
S_THREAD_LOCAL_ZEROFILL	S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
S_THREAD_LOCAL_VARIABLES	S_THREAD_LOCAL_VARIABLES - Section with thread local variable structure data.
S_THREAD_LOCAL_VARIABLE_POINTERS	S_THREAD_LOCAL_VARIABLE_POINTERS - Section with ....
S_THREAD_LOCAL_INIT_FUNCTION_POINTERS	S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local variable initialization pointers to functions.
LAST_KNOWN_SECTION_TYPE
S_ATTR_PURE_INSTRUCTIONS	S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine instructions.
S_ATTR_NO_TOC	S_ATTR_NO_TOC - Section contains coalesced symbols that are not to be in a ranlib table of contents.
S_ATTR_STRIP_STATIC_SYMS	S_ATTR_STRIP_STATIC_SYMS - Ok to strip static symbols in this section in files with the MY_DYLDLINK flag.
S_ATTR_NO_DEAD_STRIP	S_ATTR_NO_DEAD_STRIP - No dead stripping.
S_ATTR_LIVE_SUPPORT	S_ATTR_LIVE_SUPPORT - Blocks are live if they reference live blocks.
S_ATTR_SELF_MODIFYING_CODE	S_ATTR_SELF_MODIFYING_CODE - Used with i386 code stubs written on by dyld.
S_ATTR_DEBUG	S_ATTR_DEBUG - A debug section.
S_ATTR_SOME_INSTRUCTIONS	S_ATTR_SOME_INSTRUCTIONS - Section contains some machine instructions.
S_ATTR_EXT_RELOC	S_ATTR_EXT_RELOC - Section has external relocation entries.
S_ATTR_LOC_RELOC	S_ATTR_LOC_RELOC - Section has local relocation entries.

Definition at line 44 of file MCSectionMachO.h.

Member Function Documentation

static bool llvm::MCSectionMachO::classof ( const MCSection * S ) [inline, static]

Definition at line 183 of file MCSectionMachO.h.

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

virtual std::string llvm::MCSectionMachO::getLabelBeginName ( ) const [inline, virtual]

Implements llvm::MCSection.

Definition at line 148 of file MCSectionMachO.h.

References getSectionName(), and getSegmentName().

virtual std::string llvm::MCSectionMachO::getLabelEndName ( ) const [inline, virtual]

Implements llvm::MCSection.

Definition at line 152 of file MCSectionMachO.h.

References getSectionName(), and getSegmentName().

StringRef llvm::MCSectionMachO::getSectionName ( ) const [inline]

Definition at line 141 of file MCSectionMachO.h.

Referenced by getLabelBeginName(), getLabelEndName(), PrintSwitchToSection(), and llvm::MachObjectWriter::WriteSection().

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

Definition at line 135 of file MCSectionMachO.h.

Referenced by getLabelBeginName(), getLabelEndName(), PrintSwitchToSection(), and llvm::MachObjectWriter::WriteSection().

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

Definition at line 157 of file MCSectionMachO.h.

Referenced by llvm::TargetLoweringObjectFileMachO::getExplicitSectionGlobal(), and llvm::MachObjectWriter::WriteSection().

unsigned llvm::MCSectionMachO::getType ( ) const [inline]

Definition at line 159 of file MCSectionMachO.h.

References SECTION_TYPE.

Referenced by llvm::MachObjectWriter::BindIndirectSymbols(), isVirtualSection(), and llvm::MachObjectWriter::WriteObject().

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

Definition at line 156 of file MCSectionMachO.h.

Referenced by llvm::TargetLoweringObjectFileMachO::getExplicitSectionGlobal(), PrintSwitchToSection(), and llvm::MachObjectWriter::WriteSection().

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

Definition at line 160 of file MCSectionMachO.h.

Referenced by UseCodeAlign().

bool MCSectionMachO::isVirtualSection ( ) const [virtual]

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

Implements llvm::MCSection.

Definition at line 161 of file MCSectionMachO.cpp.

References getType(), S_GB_ZEROFILL, S_THREAD_LOCAL_ZEROFILL, and S_ZEROFILL.

std::string MCSectionMachO::ParseSectionSpecifier	(	StringRef	Spec,
		StringRef &	Segment,
		StringRef &	Section,
		unsigned &	TAA,
		bool &	TAAParsed,
		unsigned &	StubSize
	)		`[static]`

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 a string indicating the problem. If no TAA was parsed, TAA is not altered, and TAAWasSet becomes false.

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 a string indicating the problem.

Definition at line 180 of file MCSectionMachO.cpp.

References AssemblerName, AttrFlag, AttrFlagEnd, llvm::StringRef::empty(), llvm::StringRef::getAsInteger(), LAST_KNOWN_SECTION_TYPE, S_SYMBOL_STUBS, SECTION_TYPE, SectionAttrDescriptors, SectionTypeDescriptors, llvm::StringRef::size(), llvm::StringRef::split(), and StripSpaces().