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b5261ebabb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77251 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
//===- MCSymbol.h - Machine Code Symbols ------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the MCSymbol class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSYMBOL_H
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#define LLVM_MC_MCSYMBOL_H
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#include <string>
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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class MCSection;
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class MCContext;
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/// MCSymbol - Instances of this class represent a symbol name in the MC file,
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/// and MCSymbols are created and unique'd by the MCContext class.
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///
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/// If the symbol is defined/emitted into the current translation unit, the
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/// Section member is set to indicate what section it lives in. Otherwise, if
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/// it is a reference to an external entity, it has a null section.
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///
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class MCSymbol {
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/// Name - The name of the symbol.
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std::string Name;
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/// Section - The section the symbol is defined in, or null if the symbol
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/// has not been defined in the associated translation unit.
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MCSection *Section;
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/// IsTemporary - True if this is an assembler temporary label, which
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/// typically does not survive in the .o file's symbol table. Usually
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/// "Lfoo" or ".foo".
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unsigned IsTemporary : 1;
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/// IsExternal - True if this symbol has been implicitly defined as an
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/// external, for example by using it in an expression without ever emitting
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/// it as a label. The @var Section for an external symbol is always null.
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unsigned IsExternal : 1;
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private: // MCContext creates and uniques these.
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friend class MCContext;
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MCSymbol(const StringRef &_Name, bool _IsTemporary)
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: Name(_Name), Section(0), IsTemporary(_IsTemporary), IsExternal(false) {}
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MCSymbol(const MCSymbol&); // DO NOT IMPLEMENT
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void operator=(const MCSymbol&); // DO NOT IMPLEMENT
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public:
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MCSection *getSection() const { return Section; }
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void setSection(MCSection *Value) { Section = Value; }
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bool isExternal() const { return IsExternal; }
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void setExternal(bool Value) { IsExternal = Value; }
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const std::string &getName() const { return Name; }
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};
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} // end namespace llvm
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#endif
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