MCSection.h revision 38cff389af1d78bd80df0479ef258493e0c5897e 
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 TargetAsmInfo;
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 TargetAsmInfo &TAI,
41                                      raw_ostream &OS) const = 0;
42  };
43
44
45  class MCSectionELF : public MCSection {
46    std::string 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    MCSectionELF(const StringRef &name, bool isDirective, SectionKind K)
56      : MCSection(K), Name(name), IsDirective(isDirective) {
57    }
58  public:
59
60    static MCSectionELF *Create(const StringRef &Name, bool IsDirective,
61                                SectionKind K, MCContext &Ctx);
62
63    const std::string &getName() const { return Name; }
64    bool isDirective() const { return IsDirective; }
65
66
67    virtual void PrintSwitchToSection(const TargetAsmInfo &TAI,
68                                      raw_ostream &OS) const;
69  };
70
71  class MCSectionCOFF : public MCSection {
72    std::string Name;
73
74    /// IsDirective - This is true if the section name is a directive, not
75    /// something that should be printed with ".section".
76    ///
77    /// FIXME: This is a hack.  Switch to a semantic view of the section instead
78    /// of a syntactic one.
79    bool IsDirective;
80
81    MCSectionCOFF(const StringRef &name, bool isDirective, SectionKind K)
82      : MCSection(K), Name(name), IsDirective(isDirective) {
83    }
84  public:
85
86    static MCSectionCOFF *Create(const StringRef &Name, bool IsDirective,
87                                   SectionKind K, MCContext &Ctx);
88
89    const std::string &getName() const { return Name; }
90    bool isDirective() const { return IsDirective; }
91
92    virtual void PrintSwitchToSection(const TargetAsmInfo &TAI,
93                                      raw_ostream &OS) const;
94  };
95
96} // end namespace llvm
97
98#endif
99