MCSymbol.h Source File (original) (raw)

13#ifndef LLVM_MC_MCSYMBOL_H

14#define LLVM_MC_MCSYMBOL_H

24#include

25#include

26#include

28namespace llvm {

43protected:

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122 union {

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153 if (Name)

154 getNameEntryPtr() = Name;

155 }

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165private:

166 void operator delete(void *);

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168 void operator delete(void*, unsigned) {

170 }

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172 void operator delete(void*, unsigned, bool) {

174 }

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180 return (*(Name - 1)).NameEntry;

181 }

183 return const_cast<MCSymbol*>(this)->getNameEntryPtr();

184 }

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186public:

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192 return getNameEntryPtr()->first();

193 }

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291 "Cannot get offset for a common/variable symbol");

293 }

296 "Cannot set offset for a common/variable symbol");

298 }

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316 unsigned Log2Align = encode(Alignment);

318 "Out of range alignment");

320 }

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337 return true;

338 } else

340 return false;

341 }

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364protected:

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379};

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382 Sym.print(OS, nullptr);

383 return OS;

384}

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386bool isRangeRelaxable(const MCSymbol *Begin, const MCSymbol *End);

387

388}

389

390#endif

assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")

This file defines the StringMapEntry class - it is intended to be a low dependency implementation det...

This class is intended to be used as a base class for asm properties and features specific to the tar...

Context object for machine code objects.

Base class for the full range of assembler expressions which are needed for parsing.

LLVM_ABI MCFragment * findAssociatedFragment() const

Find the "associated section" for this expression, which is currently defined as the absolute section...

MCSection * getParent() const

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

MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...

Definition MCSymbol.h:42

bool isAbsolute() const

isAbsolute - Check if this is an absolute symbol.

Definition MCSymbol.h:246

unsigned IsWeakExternal

This symbol is weak external.

Definition MCSymbol.h:93

MCSymbol(const MCSymbolTableEntry *Name, bool isTemporary)

Definition MCSymbol.h:146

void setCommon(uint64_t Size, Align Alignment)

Mark this symbol as being 'common'.

Definition MCSymbol.h:311

LLVM_ABI void print(raw_ostream &OS, const MCAsmInfo *MAI) const

print - Print the value to the stream OS.

bool isDefined() const

isDefined - Check if this symbol is defined (i.e., it has an address).

Definition MCSymbol.h:233

void setIsResolving(bool V)

Definition MCSymbol.h:224

Kind

Definition MCSymbol.h:45

@ Equated

Definition MCSymbol.h:47

@ Regular

Definition MCSymbol.h:46

@ Common

Definition MCSymbol.h:48

bool isInSection() const

isInSection - Check if this symbol is defined in some section (i.e., it is defined but not absolute).

Definition MCSymbol.h:237

bool isUndefined() const

isUndefined - Check if this symbol undefined (i.e., implicitly defined).

Definition MCSymbol.h:243

friend class MCExpr

Definition MCSymbol.h:134

@ NumCommonAlignmentBits

Definition MCSymbol.h:111

bool isResolving() const

Definition MCSymbol.h:223

bool isCommon() const

Is this a 'common' symbol.

Definition MCSymbol.h:344

void modifyFlags(uint32_t Value, uint32_t Mask) const

Modify the flags via a mask.

Definition MCSymbol.h:375

unsigned IsPrivateExtern

Mach-O specific: This symbol is private extern.

Definition MCSymbol.h:90

StringRef getName() const

getName - Get the symbol name.

Definition MCSymbol.h:188

void setFragment(MCFragment *F) const

Mark the symbol as defined in the fragment F.

Definition MCSymbol.h:257

unsigned IsRegistered

Definition MCSymbol.h:83

unsigned IsUsedInReloc

True if we have created a relocation that uses this symbol.

Definition MCSymbol.h:96

bool isWeakExternal() const

Definition MCSymbol.h:356

bool isVariable() const

isVariable - Check if this is a variable symbol.

Definition MCSymbol.h:267

uint32_t Flags

Definition MCSymbol.h:117

unsigned IsRedefinable

True if this symbol can be redefined.

Definition MCSymbol.h:81

void setFlags(uint32_t Value) const

Set the (implementation defined) symbol flags.

Definition MCSymbol.h:369

uint32_t getFlags() const

Get the (implementation defined) symbol flags.

Definition MCSymbol.h:366

unsigned IsExternal

True if this symbol is visible outside this translation unit.

Definition MCSymbol.h:87

friend class MCContext

Definition MCSymbol.h:135

bool isRedefinable() const

Check if this symbol is redefinable.

Definition MCSymbol.h:208

LLVM_ABI void setVariableValue(const MCExpr *Value)

MaybeAlign getCommonAlignment() const

Return the alignment of a 'common' symbol.

Definition MCSymbol.h:323

unsigned CommonAlignLog2

Definition MCSymbol.h:112

uint32_t Index

Index field, for use by the object file implementation.

Definition MCSymbol.h:120

unsigned HasName

True if this symbol is named.

Definition MCSymbol.h:73

bool isRegistered() const

Definition MCSymbol.h:195

void setIndex(uint32_t Value) const

Set the (implementation defined) index.

Definition MCSymbol.h:285

void setRedefinable(bool Value)

Mark this symbol as redefinable.

Definition MCSymbol.h:210

bool declareCommon(uint64_t Size, Align Alignment)

Declare this symbol as being 'common'.

Definition MCSymbol.h:333

void setUsedInReloc() const

Definition MCSymbol.h:198

uint32_t getIndex() const

Get the (implementation defined) index.

Definition MCSymbol.h:280

MCFragment * Fragment

If a symbol has a Fragment, the section is implied, so we only need one pointer.

Definition MCSymbol.h:65

unsigned IsResolving

Used to detect cyclic dependency like a = a + 1 and a = b; b = a.

Definition MCSymbol.h:99

MCSymbol(const MCSymbol &)=default

unsigned kind

The symbol kind.

Definition MCSymbol.h:69

MCSection & getSection() const

Get the section associated with a defined, non-absolute symbol.

Definition MCSymbol.h:251

static LLVM_ABI MCFragment * AbsolutePseudoFragment

Definition MCSymbol.h:52

void setOffset(uint64_t Value)

Definition MCSymbol.h:294

void redefineIfPossible()

Prepare this symbol to be redefined.

Definition MCSymbol.h:212

uint64_t getCommonSize() const

Return the size of a 'common' symbol.

Definition MCSymbol.h:301

const MCExpr * getVariableValue() const

Get the expression of the variable symbol.

Definition MCSymbol.h:270

unsigned IsTemporary

IsTemporary - True if this is an assembler temporary label, which typically does not survive in the ....

Definition MCSymbol.h:78

LLVM_ABI void dump() const

dump - Print the value to stderr.

bool isTemporary() const

isTemporary - Check if this is an assembler temporary symbol.

Definition MCSymbol.h:205

@ NumFlagsBits

Definition MCSymbol.h:116

union { const MCSymbolTableEntry *NameEntry; uint64_t AlignmentPadding; } NameEntryStorageTy

The name for a symbol.

Definition MCSymbol.h:141

const MCExpr * Value

If non-null, the value for a variable symbol.

Definition MCSymbol.h:130

void setIsRegistered(bool Value) const

Definition MCSymbol.h:196

uint64_t CommonSize

The size of the symbol, if it is 'common'.

Definition MCSymbol.h:127

uint64_t Offset

The offset to apply to the fragment address to form this symbol's value.

Definition MCSymbol.h:124

MCFragment * getFragment() const

Definition MCSymbol.h:346

uint64_t getOffset() const

Definition MCSymbol.h:289

bool isUsedInReloc() const

Definition MCSymbol.h:199

MCSymbol & operator=(const MCSymbol &)=delete

StringRef - Represent a constant reference to a string, i.e.

LLVM Value Representation.

This class implements an extremely fast bulk output stream that can only output to a stream.

#define llvm_unreachable(msg)

Marks that the current location is not supposed to be reachable.

This is an optimization pass for GlobalISel generic memory operations.

unsigned encode(MaybeAlign A)

Returns a representation of the alignment that encodes undefined as 0.

bool isRangeRelaxable(const MCSymbol *Begin, const MCSymbol *End)

StringMapEntry< MCSymbolTableValue > MCSymbolTableEntry

MCContext stores MCSymbolTableValue in a string map (see MCSymbol::operator new).

MaybeAlign decodeMaybeAlign(unsigned Value)

Dual operation of the encode function above.

raw_ostream & operator<<(raw_ostream &OS, const APFixedPoint &FX)

This struct is a compact representation of a valid (non-zero power of two) alignment.

This struct is a compact representation of a valid (power of two) or undefined (0) alignment.