1 //===- MCSection.h - Machine Code Sections ----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the MCSection class.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_MC_MCSECTION_H
15 #define LLVM_MC_MCSECTION_H
18 #include "llvm/ADT/StringRef.h"
19 #include "llvm/MC/SectionKind.h"
26 /// MCSection - Instances of this class represent a uniqued identifier for a
27 /// section in the current translation unit. The MCContext class uniques and
30 MCSection(const MCSection&); // DO NOT IMPLEMENT
31 void operator=(const MCSection&); // DO NOT IMPLEMENT
33 MCSection(SectionKind K) : Kind(K) {}
38 SectionKind getKind() const { return Kind; }
40 virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
41 raw_ostream &OS) const = 0;
43 /// isBaseAddressKnownZero - Return true if we know that this section will
44 /// get a base address of zero. In cases where we know that this is true we
45 /// can emit section offsets as direct references to avoid a subtraction
46 /// from the base of the section, saving a relocation.
47 virtual bool isBaseAddressKnownZero() const {
52 class MCSectionCOFF : public MCSection {
53 // The memory for this string is stored in the same MCContext as *this.
56 /// IsDirective - This is true if the section name is a directive, not
57 /// something that should be printed with ".section".
59 /// FIXME: This is a hack. Switch to a semantic view of the section instead
60 /// of a syntactic one.
63 MCSectionCOFF(StringRef name, bool isDirective, SectionKind K)
64 : MCSection(K), Name(name), IsDirective(isDirective) {
68 static MCSectionCOFF *Create(StringRef Name, bool IsDirective,
69 SectionKind K, MCContext &Ctx);
71 StringRef getName() const { return Name; }
72 bool isDirective() const { return IsDirective; }
74 virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
75 raw_ostream &OS) const;
78 } // end namespace llvm