Put each personality function in a section. This fixes the gnu ld warning:
error in foo.o; no .eh_frame_hdr table will be created.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129635 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index f332d12..3e45cd8 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -23,6 +23,7 @@
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionCOFF.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
@@ -176,6 +177,38 @@
SectionKind::getDataRel());
}
+MCSymbol *
+TargetLoweringObjectFileELF::getPersonalityPICSymbol(StringRef Name) const {
+ Twine FullName = StringRef("DW.ref.") + Name;
+ return getContext().GetOrCreateSymbol(FullName);
+}
+
+void TargetLoweringObjectFileELF::emitPersonalityValue(MCStreamer &Streamer,
+ const TargetMachine &TM,
+ const MCSymbol *Sym) const {
+ MCSymbol *Label = getPersonalityPICSymbol(Sym->getName());
+ Streamer.EmitSymbolAttribute(Label, MCSA_Hidden);
+ Streamer.EmitSymbolAttribute(Label, MCSA_Weak);
+ Twine SectionName = StringRef(".data.") + Label->getName();
+ SmallString<64> NameData;
+ SectionName.toVector(NameData);
+ unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
+ const MCSection *Sec = getContext().getELFSection(NameData,
+ ELF::SHT_PROGBITS,
+ Flags,
+ SectionKind::getDataRel(),
+ 0, Label->getName());
+ Streamer.SwitchSection(Sec);
+ Streamer.EmitValueToAlignment(8);
+ Streamer.EmitSymbolAttribute(Label, MCSA_ELF_TypeObject);
+ const MCExpr *E = MCConstantExpr::Create(8, getContext());
+ Streamer.EmitELFSize(Label, E);
+ Streamer.EmitLabel(Label);
+
+ unsigned Size = TM.getTargetData()->getPointerSize();
+ Streamer.EmitSymbolValue(Sym, Size);
+}
+
static SectionKind
getELFKindForNamedSection(StringRef Name, SectionKind K) {
// FIXME: Why is this here? Codegen is should not be in the business