/usr/include/llvm-3.9/llvm/MC/MCSectionELF.h is in llvm-3.9-dev 1:3.9.1-19ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | //===- MCSectionELF.h - ELF Machine Code Sections ---------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the MCSectionELF class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCSECTIONELF_H
#define LLVM_MC_MCSECTIONELF_H
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
class MCSymbol;
/// This represents a section on linux, lots of unix variants and some bare
/// metal systems.
class MCSectionELF final : public MCSection {
/// This is the name of the section. The referenced memory is owned by
/// TargetLoweringObjectFileELF's ELFUniqueMap.
StringRef SectionName;
/// This is the sh_type field of a section, drawn from the enums below.
unsigned Type;
/// This is the sh_flags field of a section, drawn from the enums below.
unsigned Flags;
unsigned UniqueID;
/// The size of each entry in this section. This size only makes sense for
/// sections that contain fixed-sized entries. If a section does not contain
/// fixed-sized entries 'EntrySize' will be 0.
unsigned EntrySize;
const MCSymbolELF *Group;
/// Depending on the type of the section this is sh_link or sh_info.
const MCSectionELF *Associated;
private:
friend class MCContext;
MCSectionELF(StringRef Section, unsigned type, unsigned flags, SectionKind K,
unsigned entrySize, const MCSymbolELF *group, unsigned UniqueID,
MCSymbol *Begin, const MCSectionELF *Associated)
: MCSection(SV_ELF, K, Begin), SectionName(Section), Type(type),
Flags(flags), UniqueID(UniqueID), EntrySize(entrySize), Group(group),
Associated(Associated) {
if (Group)
Group->setIsSignature();
}
void setSectionName(StringRef Name) { SectionName = Name; }
public:
~MCSectionELF();
/// Decides whether a '.section' directive should be printed before the
/// section name
bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
StringRef getSectionName() const { return SectionName; }
unsigned getType() const { return Type; }
unsigned getFlags() const { return Flags; }
unsigned getEntrySize() const { return EntrySize; }
void setFlags(unsigned F) { Flags = F; }
const MCSymbolELF *getGroup() const { return Group; }
void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS,
const MCExpr *Subsection) const override;
bool UseCodeAlign() const override;
bool isVirtualSection() const override;
bool isUnique() const { return UniqueID != ~0U; }
unsigned getUniqueID() const { return UniqueID; }
const MCSectionELF *getAssociatedSection() const { return Associated; }
static bool classof(const MCSection *S) {
return S->getVariant() == SV_ELF;
}
};
} // end namespace llvm
#endif
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