: MCStreamer(Context),
Assembler(new MCAssembler(Context, TAB, *Emitter_,
*TAB.createObjectWriter(OS), OS)),
- CurSectionData(0) {}
+ CurSectionData(nullptr), EmitEHFrame(true), EmitDebugFrame(false) {}
MCObjectStreamer::MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB,
raw_ostream &OS, MCCodeEmitter *Emitter_,
MCAssembler *_Assembler)
- : MCStreamer(Context), Assembler(_Assembler), CurSectionData(0) {}
+ : MCStreamer(Context), Assembler(_Assembler), CurSectionData(nullptr),
+ EmitEHFrame(true), EmitDebugFrame(false) {}
MCObjectStreamer::~MCObjectStreamer() {
delete &Assembler->getBackend();
void MCObjectStreamer::reset() {
if (Assembler)
Assembler->reset();
- CurSectionData = 0;
+ CurSectionData = nullptr;
CurInsertionPoint = MCSectionData::iterator();
+ EmitEHFrame = true;
+ EmitDebugFrame = false;
MCStreamer::reset();
}
+void MCObjectStreamer::EmitFrames(MCAsmBackend *MAB) {
+ if (!getNumFrameInfos())
+ return;
+
+ if (EmitEHFrame)
+ MCDwarfFrameEmitter::Emit(*this, MAB, true);
+
+ if (EmitDebugFrame)
+ MCDwarfFrameEmitter::Emit(*this, MAB, false);
+}
+
MCFragment *MCObjectStreamer::getCurrentFragment() const {
assert(getCurrentSectionData() && "No current section!");
if (CurInsertionPoint != getCurrentSectionData()->getFragmentList().begin())
return std::prev(CurInsertionPoint);
- return 0;
+ return nullptr;
}
MCDataFragment *MCObjectStreamer::getOrCreateDataFragment() const {
return F;
}
-const MCExpr *MCObjectStreamer::AddValueSymbols(const MCExpr *Value) {
- switch (Value->getKind()) {
- case MCExpr::Target:
- cast<MCTargetExpr>(Value)->AddValueSymbols(Assembler);
- break;
-
- case MCExpr::Constant:
- break;
-
- case MCExpr::Binary: {
- const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
- AddValueSymbols(BE->getLHS());
- AddValueSymbols(BE->getRHS());
- break;
- }
-
- case MCExpr::SymbolRef:
- Assembler->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
- break;
-
- case MCExpr::Unary:
- AddValueSymbols(cast<MCUnaryExpr>(Value)->getSubExpr());
- break;
- }
+void MCObjectStreamer::visitUsedSymbol(const MCSymbol &Sym) {
+ Assembler->getOrCreateSymbolData(Sym);
+}
- return Value;
+void MCObjectStreamer::EmitCFISections(bool EH, bool Debug) {
+ MCStreamer::EmitCFISections(EH, Debug);
+ EmitEHFrame = EH;
+ EmitDebugFrame = Debug;
}
-void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size) {
+void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc) {
+ MCStreamer::EmitValueImpl(Value, Size, Loc);
MCDataFragment *DF = getOrCreateDataFragment();
MCLineEntry::Make(this, getCurrentSection().first);
// Avoid fixups when possible.
int64_t AbsValue;
- if (AddValueSymbols(Value)->EvaluateAsAbsolute(AbsValue, getAssembler())) {
+ if (Value->EvaluateAsAbsolute(AbsValue, getAssembler())) {
EmitIntValue(AbsValue, Size);
return;
}
DF->getFixups().push_back(
MCFixup::Create(DF->getContents().size(), Value,
- MCFixup::getKindForSize(Size, false)));
+ MCFixup::getKindForSize(Size, false), Loc));
DF->getContents().resize(DF->getContents().size() + Size, 0);
}
void MCObjectStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
- RecordProcStart(Frame);
+ // We need to create a local symbol to avoid relocations.
+ Frame.Begin = getContext().CreateTempSymbol();
+ EmitLabel(Frame.Begin);
}
void MCObjectStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
- RecordProcEnd(Frame);
+ Frame.End = getContext().CreateTempSymbol();
+ EmitLabel(Frame.End);
}
void MCObjectStreamer::EmitLabel(MCSymbol *Symbol) {
SD.setOffset(F->getContents().size());
}
-void MCObjectStreamer::EmitDebugLabel(MCSymbol *Symbol) {
- EmitLabel(Symbol);
-}
-
void MCObjectStreamer::EmitULEB128Value(const MCExpr *Value) {
int64_t IntValue;
if (Value->EvaluateAsAbsolute(IntValue, getAssembler())) {
void MCObjectStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
getAssembler().getOrCreateSymbolData(*Symbol);
- AddValueSymbols(Value);
MCStreamer::EmitAssignment(Symbol, Value);
}
-void MCObjectStreamer::EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) {
- // Scan for values.
- for (unsigned i = Inst.getNumOperands(); i--; )
- if (Inst.getOperand(i).isExpr())
- AddValueSymbols(Inst.getOperand(i).getExpr());
+void MCObjectStreamer::EmitInstruction(const MCInst &Inst,
+ const MCSubtargetInfo &STI) {
+ MCStreamer::EmitInstruction(Inst, STI);
MCSectionData *SD = getCurrentSectionData();
SD->setHasInstructions(true);