/usr/include/llvm-3.5/llvm/MC/MCSectionCOFF.h is in llvm-3.5-dev 1:3.5~svn201651-1ubuntu1.
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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 | //===- MCSectionCOFF.h - COFF 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 MCSectionCOFF class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCSECTIONCOFF_H
#define LLVM_MC_MCSECTIONCOFF_H
#include "llvm/ADT/StringRef.h"
#include "llvm/MC/MCSection.h"
#include "llvm/Support/COFF.h"
namespace llvm {
class MCSymbol;
/// MCSectionCOFF - This represents a section on Windows
class MCSectionCOFF : public MCSection {
// The memory for this string is stored in the same MCContext as *this.
StringRef SectionName;
// FIXME: The following fields should not be mutable, but are for now so
// the asm parser can honor the .linkonce directive.
/// Characteristics - This is the Characteristics field of a section,
/// drawn from the enums below.
mutable unsigned Characteristics;
/// The COMDAT symbol of this section. Only valid if this is a COMDAT
/// section. Two COMDAT sections are merged if they have the same
/// COMDAT symbol.
const MCSymbol *COMDATSymbol;
/// Selection - This is the Selection field for the section symbol, if
/// it is a COMDAT section (Characteristics & IMAGE_SCN_LNK_COMDAT) != 0
mutable int Selection;
/// Assoc - This is name of the associated section, if it is a COMDAT
/// section (Characteristics & IMAGE_SCN_LNK_COMDAT) != 0 with an
/// associative Selection (IMAGE_COMDAT_SELECT_ASSOCIATIVE).
mutable const MCSectionCOFF *Assoc;
private:
friend class MCContext;
MCSectionCOFF(StringRef Section, unsigned Characteristics,
const MCSymbol *COMDATSymbol, int Selection,
const MCSectionCOFF *Assoc, SectionKind K)
: MCSection(SV_COFF, K), SectionName(Section),
Characteristics(Characteristics), COMDATSymbol(COMDATSymbol),
Selection(Selection), Assoc(Assoc) {
assert ((Characteristics & 0x00F00000) == 0 &&
"alignment must not be set upon section creation");
assert ((Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) ==
(Assoc != 0) &&
"associative COMDAT section must have an associated section");
}
~MCSectionCOFF();
public:
/// ShouldOmitSectionDirective - 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; }
virtual std::string getLabelBeginName() const {
return SectionName.str() + "_begin";
}
virtual std::string getLabelEndName() const {
return SectionName.str() + "_end";
}
unsigned getCharacteristics() const { return Characteristics; }
int getSelection() const { return Selection; }
const MCSectionCOFF *getAssocSection() const { return Assoc; }
void setSelection(int Selection, const MCSectionCOFF *Assoc = 0) const;
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS,
const MCExpr *Subsection) const;
virtual bool UseCodeAlign() const;
virtual bool isVirtualSection() const;
static bool classof(const MCSection *S) {
return S->getVariant() == SV_COFF;
}
};
} // end namespace llvm
#endif
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