unsigned lsdaEncoding);
MCSymbol *EmitFDE(MCStreamer &streamer,
const MCSymbol &cieStart,
- const MCDwarfFrameInfo &frame);
+ const MCDwarfFrameInfo &frame,
+ bool forceLsda);
void EmitCFIInstructions(MCStreamer &streamer,
const std::vector<MCCFIInstruction> &Instrs,
MCSymbol *BaseLabel);
MCSymbol *FrameEmitterImpl::EmitFDE(MCStreamer &streamer,
const MCSymbol &cieStart,
- const MCDwarfFrameInfo &frame) {
+ const MCDwarfFrameInfo &frame,
+ bool forceLsda) {
MCContext &context = streamer.getContext();
MCSymbol *fdeStart = context.CreateTempSymbol();
MCSymbol *fdeEnd = context.CreateTempSymbol();
// Augmentation Data
streamer.EmitLabel(augmentationStart);
+
+ // When running in "CodeGen compatibility mode" a FDE with no LSDA can be
+ // assigned to a CIE that requires one. In that case we output a 0 (as does
+ // CodeGen).
if (frame.Lsda)
EmitSymbol(streamer, *frame.Lsda, frame.LsdaEncoding);
+ else if (forceLsda)
+ streamer.EmitIntValue(0, size);
+
streamer.EmitLabel(augmentationEnd);
// Call Frame Instructions
for (unsigned i = 0, n = streamer.getNumFrameInfos(); i < n; ++i) {
const MCDwarfFrameInfo &frame = streamer.getFrameInfo(i);
const MCSymbol *cieStart = Personalities[frame.Personality];
- if (!cieStart)
+ bool hasLSDA;
+ if (!cieStart) {
cieStart = aCIE;
+ hasLSDA = aFrame->Lsda;
+ } else {
+ hasLSDA = true;
+ }
- fdeEnd = Emitter.EmitFDE(streamer, *cieStart, frame);
+ fdeEnd = Emitter.EmitFDE(streamer, *cieStart, frame,
+ hasLSDA);
if (i != n - 1)
streamer.EmitLabel(fdeEnd);
}
cieStart = &Emitter.EmitCIE(streamer, frame.Personality,
frame.PersonalityEncoding, frame.Lsda,
frame.LsdaEncoding);
- fdeEnd = Emitter.EmitFDE(streamer, *cieStart, frame);
+ fdeEnd = Emitter.EmitFDE(streamer, *cieStart, frame, false);
if (i != n - 1)
streamer.EmitLabel(fdeEnd);
}