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//===- lib/MC/MCSection.cpp - Machine Code Section Representation ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCContext.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// MCSection
//===----------------------------------------------------------------------===//
MCSection::~MCSection() {
}
MCSection::MCSection(const StringRef &N, bool isDirective, SectionKind K,
MCContext &Ctx)
: Name(N), IsDirective(isDirective), Kind(K) {
MCSection *&Entry = Ctx.Sections[Name];
assert(Entry == 0 && "Multiple sections with the same name created");
Entry = this;
}
//===----------------------------------------------------------------------===//
// MCSectionELF
//===----------------------------------------------------------------------===//
MCSectionELF *MCSectionELF::
Create(const StringRef &Name, bool IsDirective, SectionKind K, MCContext &Ctx) {
return new (Ctx) MCSectionELF(Name, IsDirective, K, Ctx);
}
void MCSectionELF::PrintSwitchToSection(const TargetAsmInfo &TAI,
raw_ostream &OS) const {
if (isDirective()) {
OS << getName() << '\n';
return;
}
OS << "\t.section\t" << getName();
// Handle the weird solaris syntax if desired.
if (TAI.usesSunStyleELFSectionSwitchSyntax() &&
!getKind().isMergeableConst() && !getKind().isMergeableCString()) {
if (!getKind().isMetadata())
OS << ",#alloc";
if (getKind().isText())
OS << ",#execinstr";
if (getKind().isWriteable())
OS << ",#write";
if (getKind().isThreadLocal())
OS << ",#tls";
} else {
OS << ",\"";
if (!getKind().isMetadata())
OS << 'a';
if (getKind().isText())
OS << 'x';
if (getKind().isWriteable())
OS << 'w';
if (getKind().isMergeable1ByteCString() ||
getKind().isMergeable2ByteCString() ||
getKind().isMergeable4ByteCString() ||
getKind().isMergeableConst4() ||
getKind().isMergeableConst8() ||
getKind().isMergeableConst16())
OS << 'M';
if (getKind().isMergeable1ByteCString() ||
getKind().isMergeable2ByteCString() ||
getKind().isMergeable4ByteCString())
OS << 'S';
if (getKind().isThreadLocal())
OS << 'T';
OS << "\",";
// If comment string is '@', e.g. as on ARM - use '%' instead
if (TAI.getCommentString()[0] == '@')
OS << '%';
else
OS << '@';
if (getKind().isBSS() || getKind().isThreadBSS())
OS << "nobits";
else
OS << "progbits";
if (getKind().isMergeable1ByteCString()) {
OS << ",1";
} else if (getKind().isMergeable2ByteCString()) {
OS << ",2";
} else if (getKind().isMergeable4ByteCString()) {
OS << ",4";
} else if (getKind().isMergeableConst4()) {
OS << ",4";
} else if (getKind().isMergeableConst8()) {
OS << ",8";
} else if (getKind().isMergeableConst16()) {
OS << ",16";
}
}
}
//===----------------------------------------------------------------------===//
// MCSectionMachO
//===----------------------------------------------------------------------===//
MCSectionMachO *MCSectionMachO::
Create(const StringRef &Name, bool IsDirective, SectionKind K, MCContext &Ctx) {
return new (Ctx) MCSectionMachO(Name, IsDirective, K, Ctx);
}
void MCSectionMachO::PrintSwitchToSection(const TargetAsmInfo &TAI,
raw_ostream &OS) const {
if (!isDirective())
OS << "\t.section\t" << getName() << '\n';
else
OS << getName() << '\n';
}
//===----------------------------------------------------------------------===//
// MCSectionCOFF
//===----------------------------------------------------------------------===//
MCSectionCOFF *MCSectionCOFF::
Create(const StringRef &Name, bool IsDirective, SectionKind K, MCContext &Ctx) {
return new (Ctx) MCSectionCOFF(Name, IsDirective, K, Ctx);
}
void MCSectionCOFF::PrintSwitchToSection(const TargetAsmInfo &TAI,
raw_ostream &OS) const {
if (isDirective()) {
OS << getName() << '\n';
return;
}
OS << "\t.section\t" << getName() << ",\"";
if (getKind().isText())
OS << 'x';
if (getKind().isWriteable())
OS << 'w';
OS << "\"\n";
}
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