MCSection.h revision 1ccd91a5b156ff8b415806b0d60fd7c302d62693 
1//===- MCSection.h - Machine Code Sections ----------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares the MCSection class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_MC_MCSECTION_H
15#define LLVM_MC_MCSECTION_H
16
17#include <string>
18#include "llvm/ADT/StringRef.h"
19#include "llvm/MC/SectionKind.h"
20
21namespace llvm {
22  class MCContext;
23  class MCAsmInfo;
24  class raw_ostream;
25
26  /// MCSection - Instances of this class represent a uniqued identifier for a
27  /// section in the current translation unit.  The MCContext class uniques and
28  /// creates these.
29  class MCSection {
30    MCSection(const MCSection&);      // DO NOT IMPLEMENT
31    void operator=(const MCSection&); // DO NOT IMPLEMENT
32  protected:
33    MCSection(SectionKind K) : Kind(K) {}
34    SectionKind Kind;
35  public:
36    virtual ~MCSection();
37
38    SectionKind getKind() const { return Kind; }
39
40    virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
41                                      raw_ostream &OS) const = 0;
42  };
43
44  class MCSectionCOFF : public MCSection {
45    // The memory for this string is stored in the same MCContext as *this.
46    StringRef Name;
47
48    /// IsDirective - This is true if the section name is a directive, not
49    /// something that should be printed with ".section".
50    ///
51    /// FIXME: This is a hack.  Switch to a semantic view of the section instead
52    /// of a syntactic one.
53    bool IsDirective;
54
55    MCSectionCOFF(StringRef name, bool isDirective, SectionKind K)
56      : MCSection(K), Name(name), IsDirective(isDirective) {
57    }
58  public:
59
60    static MCSectionCOFF *Create(StringRef Name, bool IsDirective,
61                                 SectionKind K, MCContext &Ctx);
62
63    StringRef getName() const { return Name; }
64    bool isDirective() const { return IsDirective; }
65
66    virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
67                                      raw_ostream &OS) const;
68  };
69
70} // end namespace llvm
71
72#endif
73