return DataRelROSection;
}
-const MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
- unsigned Priority, const MCSymbol *KeySym) const {
- // The default scheme is .ctor / .dtor, so we have to invert the priority
- // numbering.
- if (Priority == 65535)
- return StaticCtorSection;
+static const MCSectionELF *getStaticStructorSection(MCContext &Ctx,
+ bool UseInitArray,
+ bool IsCtor,
+ unsigned Priority,
+ const MCSymbol *KeySym) {
+ std::string Name;
+ unsigned Type;
+ unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE;
+ SectionKind Kind = SectionKind::getDataRel();
+ StringRef COMDAT = KeySym ? KeySym->getName() : "";
+
+ if (KeySym)
+ Flags |= ELF::SHF_GROUP;
if (UseInitArray) {
- std::string Name = std::string(".init_array.") + utostr(Priority);
- return getContext().getELFSection(Name, ELF::SHT_INIT_ARRAY,
- ELF::SHF_ALLOC | ELF::SHF_WRITE,
- SectionKind::getDataRel());
+ if (IsCtor) {
+ Type = ELF::SHT_INIT_ARRAY;
+ Name = ".init_array";
+ } else {
+ Type = ELF::SHT_FINI_ARRAY;
+ Name = ".fini_array";
+ }
+ if (Priority != 65535) {
+ Name += '.';
+ Name += utostr(Priority);
+ }
} else {
- std::string Name = std::string(".ctors.") + utostr(65535 - Priority);
- return getContext().getELFSection(Name, ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRel());
+ // The default scheme is .ctor / .dtor, so we have to invert the priority
+ // numbering.
+ if (IsCtor)
+ Name = ".ctors";
+ else
+ Name = ".dtors";
+ if (Priority != 65535) {
+ Name += '.';
+ Name += utostr(65535 - Priority);
+ }
+ Type = ELF::SHT_PROGBITS;
}
+
+ return Ctx.getELFSection(Name, Type, Flags, Kind, 0, COMDAT);
}
-const MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
+const MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
unsigned Priority, const MCSymbol *KeySym) const {
- // The default scheme is .ctor / .dtor, so we have to invert the priority
- // numbering.
- if (Priority == 65535)
- return StaticDtorSection;
+ return getStaticStructorSection(getContext(), UseInitArray, true, Priority,
+ KeySym);
+}
- if (UseInitArray) {
- std::string Name = std::string(".fini_array.") + utostr(Priority);
- return getContext().getELFSection(Name, ELF::SHT_FINI_ARRAY,
- ELF::SHF_ALLOC | ELF::SHF_WRITE,
- SectionKind::getDataRel());
- } else {
- std::string Name = std::string(".dtors.") + utostr(65535 - Priority);
- return getContext().getELFSection(Name, ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRel());
- }
+const MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
+ unsigned Priority, const MCSymbol *KeySym) const {
+ return getStaticStructorSection(getContext(), UseInitArray, false, Priority,
+ KeySym);
}
void
cast<GlobalVariable>(GV)) < 32)
return UStringSection;
- if (Kind.isMergeableConst()) {
+ // With MachO only variables whose corresponding symbol starts with 'l' or
+ // 'L' can be merged, so we only try merging GVs with private linkage.
+ if (GV->hasPrivateLinkage() && Kind.isMergeableConst()) {
if (Kind.isMergeableConst4())
return FourByteConstantSection;
if (Kind.isMergeableConst8())
COFF::IMAGE_SCN_MEM_EXECUTE |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_CNT_CODE;
- else if (K.isBSS ())
+ else if (K.isBSS())
Flags |=
COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE;
- else if (K.isReadOnly())
+ else if (K.isReadOnly() || K.isReadOnlyWithRel())
Flags |=
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ;
if (ComdatGV->getComdat() != C)
report_fatal_error("Associative COMDAT symbol '" + ComdatGVName +
- "' is not a key for it's COMDAT.");
+ "' is not a key for its COMDAT.");
return ComdatGV;
}
return ".bss";
if (Kind.isThreadLocal())
return ".tls$";
- if (Kind.isWriteable())
- return ".data";
- return ".rdata";
+ if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
+ return ".rdata";
+ return ".data";
}
if (Kind.isThreadLocal())
return TLSDataSection;
- if (Kind.isReadOnly())
+ if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
return ReadOnlySection;
// Note: we claim that common symbols are put in BSSSection, but they are
}
}
-static const MCSection *getAssociativeCOFFSection(MCContext &Ctx,
- const MCSection *Sec,
- const MCSymbol *KeySym) {
- // Return the normal section if we don't have to be associative.
- if (!KeySym)
- return Sec;
-
- // Make an associative section with the same name and kind as the normal
- // section.
- const MCSectionCOFF *SecCOFF = cast<MCSectionCOFF>(Sec);
- unsigned Characteristics =
- SecCOFF->getCharacteristics() | COFF::IMAGE_SCN_LNK_COMDAT;
- return Ctx.getCOFFSection(SecCOFF->getSectionName(), Characteristics,
- SecCOFF->getKind(), KeySym->getName(),
- COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE);
-}
-
const MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
unsigned Priority, const MCSymbol *KeySym) const {
- return getAssociativeCOFFSection(getContext(), StaticCtorSection, KeySym);
+ return getContext().getAssociativeCOFFSection(
+ cast<MCSectionCOFF>(StaticCtorSection), KeySym);
}
const MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
unsigned Priority, const MCSymbol *KeySym) const {
- return getAssociativeCOFFSection(getContext(), StaticDtorSection, KeySym);
+ return getContext().getAssociativeCOFFSection(
+ cast<MCSectionCOFF>(StaticDtorSection), KeySym);
}