}
}
+static void
+emitNonLazySymbolPointer(MCStreamer &OutStreamer, MCSymbol *StubLabel,
+ MachineModuleInfoImpl::StubValueTy &MCSym) {
+ // L_foo$stub:
+ OutStreamer.EmitLabel(StubLabel);
+ // .indirect_symbol _foo
+ OutStreamer.EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol);
+
+ if (MCSym.getInt())
+ // External to current translation unit.
+ OutStreamer.EmitIntValue(0, 4/*size*/);
+ else
+ // Internal to current translation unit.
+ //
+ // When we place the LSDA into the TEXT section, the type info
+ // pointers need to be indirect and pc-rel. We accomplish this by
+ // using NLPs; however, sometimes the types are local to the file.
+ // We need to fill in the value for the NLP in those cases.
+ OutStreamer.EmitValue(
+ MCSymbolRefExpr::Create(MCSym.getPointer(), OutStreamer.getContext()),
+ 4 /*size*/);
+}
+
+
void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
if (Subtarget->isTargetMacho()) {
SectionKind::getMetadata());
OutStreamer.SwitchSection(TheSection);
- for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
- // L_foo$non_lazy_ptr:
- OutStreamer.EmitLabel(Stubs[i].first);
- // .indirect_symbol _foo
- MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second;
- OutStreamer.EmitSymbolAttribute(MCSym.getPointer(),
- MCSA_IndirectSymbol);
- // .long 0
- if (MCSym.getInt())
- // External to current translation unit.
- OutStreamer.EmitIntValue(0, 4/*size*/);
- else
- // Internal to current translation unit.
- //
- // When we place the LSDA into the TEXT section, the type info
- // pointers need to be indirect and pc-rel. We accomplish this by
- // using NLPs. However, sometimes the types are local to the file. So
- // we need to fill in the value for the NLP in those cases.
- OutStreamer.EmitValue(MCSymbolRefExpr::Create(MCSym.getPointer(),
- OutContext), 4/*size*/);
- }
+ for (auto &Stub : Stubs)
+ emitNonLazySymbolPointer(OutStreamer, Stub.first, Stub.second);
+
Stubs.clear();
OutStreamer.AddBlankLine();
}
Stubs = MMIMacho.GetHiddenGVStubList();
if (!Stubs.empty()) {
- OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
- EmitAlignment(2);
+ const MCSection *TheSection =
+ OutContext.getMachOSection("__IMPORT", "__pointers",
+ MachO::S_NON_LAZY_SYMBOL_POINTERS,
+ SectionKind::getMetadata());
+ OutStreamer.SwitchSection(TheSection);
+
+ for (auto &Stub : Stubs)
+ emitNonLazySymbolPointer(OutStreamer, Stub.first, Stub.second);
- for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
- // L_foo$non_lazy_ptr:
- OutStreamer.EmitLabel(Stubs[i].first);
- // .long _foo
- OutStreamer.EmitValue(MCSymbolRefExpr::
- Create(Stubs[i].second.getPointer(),
- OutContext), 4/*size*/);
- }
Stubs.clear();
OutStreamer.AddBlankLine();
}
--- /dev/null
+; RUN: llc -mtriple=i686-apple-macosx -o - %s | FileCheck %s
+
+; x86 doesn't normally use indirect symbols, particularly hidden ones, but it
+; can be tricked into it for exception-handling typeids.
+
+@hidden_typeid = external hidden constant i8*
+@normal_typeid = external constant i8*
+
+declare void @throws()
+
+define void @get_indirect_hidden() {
+ invoke void @throws() to label %end unwind label %lpad
+lpad:
+ %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+ catch i8* bitcast (i8** @hidden_typeid to i8*)
+ br label %end
+
+end:
+ ret void
+}
+
+define void @get_indirect() {
+ invoke void @throws() to label %end unwind label %lpad
+lpad:
+ %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+ catch i8* bitcast (i8** @normal_typeid to i8*)
+ br label %end
+
+end:
+ ret void
+}
+
+declare i32 @__gxx_personality_v0(...)
+
+; CHECK: .section __IMPORT,__pointers,non_lazy_symbol_pointers
+
+; CHECK-NOT: __DATA,__data
+; CHECK: .indirect_symbol _normal_typeid
+; CHECK-NEXT: .long 0
+
+; CHECK-NOT: __DATA,__data
+; CHECK: .indirect_symbol _hidden_typeid
+; CHECK-NEXT: .long 0