| //===- MCSymbol.h - Machine Code Symbols ------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the declaration of the MCSymbol class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_MC_MCSYMBOL_H |
| #define LLVM_MC_MCSYMBOL_H |
| |
| #include <string> |
| #include "llvm/ADT/StringRef.h" |
| |
| namespace llvm { |
| class MCSection; |
| class MCContext; |
| class raw_ostream; |
| |
| /// MCSymbol - Instances of this class represent a symbol name in the MC file, |
| /// and MCSymbols are created and unique'd by the MCContext class. |
| /// |
| /// If the symbol is defined/emitted into the current translation unit, the |
| /// Section member is set to indicate what section it lives in. Otherwise, if |
| /// it is a reference to an external entity, it has a null section. |
| /// |
| class MCSymbol { |
| /// Name - The name of the symbol. |
| std::string Name; |
| /// Section - The section the symbol is defined in, or null if the symbol |
| /// has not been defined in the associated translation unit. |
| const MCSection *Section; |
| |
| /// IsTemporary - True if this is an assembler temporary label, which |
| /// typically does not survive in the .o file's symbol table. Usually |
| /// "Lfoo" or ".foo". |
| unsigned IsTemporary : 1; |
| |
| /// IsExternal - True if this symbol has been implicitly defined as an |
| /// external, for example by using it in an expression without ever emitting |
| /// it as a label. The @var Section for an external symbol is always null. |
| unsigned IsExternal : 1; |
| |
| private: // MCContext creates and uniques these. |
| friend class MCContext; |
| MCSymbol(const StringRef &_Name, bool _IsTemporary) |
| : Name(_Name), Section(0), IsTemporary(_IsTemporary), IsExternal(false) {} |
| |
| MCSymbol(const MCSymbol&); // DO NOT IMPLEMENT |
| void operator=(const MCSymbol&); // DO NOT IMPLEMENT |
| public: |
| |
| const MCSection *getSection() const { return Section; } |
| void setSection(const MCSection *S) { Section = S; } |
| |
| bool isExternal() const { return IsExternal; } |
| void setExternal(bool Value) { IsExternal = Value; } |
| |
| const std::string &getName() const { return Name; } |
| |
| /// print - Print the value to the stream \arg OS. |
| void print(raw_ostream &OS) const; |
| |
| /// dump - Print the value to stderr. |
| void dump() const; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |