StringRef StringValue;
static bool LessTag(const AttributeItem &LHS, const AttributeItem &RHS) {
- return (LHS.Tag < RHS.Tag);
+ // The conformance tag must be emitted first when serialised
+ // into an object file. Specifically, the addenda to the ARM ABI
+ // states that (2.3.7.4):
+ //
+ // "To simplify recognition by consumers in the common case of
+ // claiming conformity for the whole file, this tag should be
+ // emitted first in a file-scope sub-subsection of the first
+ // public subsection of the attributes section."
+ //
+ // So it is special-cased in this comparison predicate when the
+ // attributes are sorted in finishAttributeSection().
+ return (RHS.Tag != ARMBuildAttrs::conformance) &&
+ ((LHS.Tag == ARMBuildAttrs::conformance) || (LHS.Tag < RHS.Tag));
}
};
/// necessary.
void EmitValueImpl(const MCExpr *Value, unsigned Size,
const SMLoc &Loc) override {
+ if (const MCSymbolRefExpr *SRE = dyn_cast_or_null<MCSymbolRefExpr>(Value))
+ if (SRE->getKind() == MCSymbolRefExpr::VK_ARM_SBREL && !(Size == 4))
+ getContext().FatalError(Loc, "relocated expression must be 32-bit");
+
EmitDataMappingSymbol();
MCELFStreamer::EmitValueImpl(Value, Size);
}
if (AttributeSection) {
Streamer.SwitchSection(AttributeSection);
} else {
- AttributeSection =
- Streamer.getContext().getELFSection(".ARM.attributes",
- ELF::SHT_ARM_ATTRIBUTES,
- 0,
- SectionKind::getMetadata());
+ AttributeSection = Streamer.getContext().getELFSection(
+ ".ARM.attributes", ELF::SHT_ARM_ATTRIBUTES, 0);
Streamer.SwitchSection(AttributeSection);
// Format version
// Get .ARM.extab or .ARM.exidx section
const MCSectionELF *EHSection = nullptr;
if (const MCSymbol *Group = FnSection.getGroup()) {
- EHSection = getContext().getELFSection(
- EHSecName, Type, Flags | ELF::SHF_GROUP, Kind,
- FnSection.getEntrySize(), Group->getName());
+ EHSection =
+ getContext().getELFSection(EHSecName, Type, Flags | ELF::SHF_GROUP,
+ FnSection.getEntrySize(), Group->getName());
} else {
- EHSection = getContext().getELFSection(EHSecName, Type, Flags, Kind);
+ EHSection = getContext().getELFSection(EHSecName, Type, Flags);
}
assert(EHSection && "Failed to get the required EH section");
return S;
}
-MCStreamer *createARMNullStreamer(MCContext &Ctx) {
- MCStreamer *S = llvm::createNullStreamer(Ctx);
- new ARMTargetStreamer(*S);
- return S;
+MCTargetStreamer *createARMNullTargetStreamer(MCStreamer &S) {
+ return new ARMTargetStreamer(S);
}
MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,