return AddrDelta;
}
-const MCExpr *MCStreamer::ForceExpAbs(MCStreamer *Streamer,
- MCContext &Context, const MCExpr* Expr) {
- if (Context.getAsmInfo().hasAggressiveSymbolFolding())
- return Expr;
+const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
+ if (Context.getAsmInfo().hasAggressiveSymbolFolding() ||
+ isa<MCSymbolRefExpr>(Expr))
+ return Expr;
- MCSymbol *ABS = Context.CreateTempSymbol();
- Streamer->EmitAssignment(ABS, Expr);
- return MCSymbolRefExpr::Create(ABS, Context);
+ MCSymbol *ABS = Context.CreateTempSymbol();
+ EmitAssignment(ABS, Expr);
+ return MCSymbolRefExpr::Create(ABS, Context);
}
raw_ostream &MCStreamer::GetCommentOS() {
void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
- if (getContext().getAsmInfo().hasAggressiveSymbolFolding()) {
- EmitValue(Value, Size, AddrSpace);
- return;
- }
- MCSymbol *ABS = getContext().CreateTempSymbol();
- EmitAssignment(ABS, Value);
- EmitSymbolValue(ABS, Size, AddrSpace);
+ const MCExpr *ABS = ForceExpAbs(Value);
+ EmitValue(ABS, Size, AddrSpace);
}
CurFrame->Instructions.push_back(Instruction);
}
-void MCStreamer::EmitWin64EHFrame(MCSymbol *Symbol, MCSymbol *EHandler)
-{
- errs() << "Not implemented yet\n";
- abort();
-}
-
-void MCStreamer::EmitWin64EHPushReg(int64_t Register)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
+ W64UnwindInfos.push_back(*Frame);
+ CurrentW64UnwindInfo = &W64UnwindInfos.back();
}
-void MCStreamer::EmitWin64EHSetFrame(int64_t Register, int64_t Offset)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::EnsureValidW64UnwindInfo() {
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (!CurFrame || CurFrame->End)
+ report_fatal_error("No open Win64 EH frame function!");
}
-void MCStreamer::EmitWin64EHAllocStack(int64_t Size)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (CurFrame && !CurFrame->End)
+ report_fatal_error("Starting a function before ending the previous one!");
+ MCWin64EHUnwindInfo Frame;
+ Frame.Begin = getContext().CreateTempSymbol();
+ Frame.Function = Symbol;
+ EmitLabel(Frame.Begin);
+ setCurrentW64UnwindInfo(&Frame);
}
-void MCStreamer::EmitWin64EHSaveReg(int64_t Register, int64_t Offset)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::EmitWin64EHEndProc() {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (CurFrame->ChainedParent)
+ report_fatal_error("Not all chained regions terminated!");
+ CurFrame->End = getContext().CreateTempSymbol();
+ EmitLabel(CurFrame->End);
}
-void MCStreamer::EmitWin64EHPushFrame(bool Code)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::EmitWin64EHStartChained() {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo Frame;
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ Frame.Begin = getContext().CreateTempSymbol();
+ Frame.Function = CurFrame->Function;
+ Frame.ChainedParent = CurFrame;
+ EmitLabel(Frame.Begin);
+ setCurrentW64UnwindInfo(&Frame);
}
-void MCStreamer::EmitWin64EHEndProlog(void)
-{
- errs() << "Not implemented yet\n";
- abort();
+void MCStreamer::EmitWin64EHEndChained() {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (!CurFrame->ChainedParent)
+ report_fatal_error("End of a chained region outside a chained region!");
+ CurFrame->End = getContext().CreateTempSymbol();
+ EmitLabel(CurFrame->End);
+ CurrentW64UnwindInfo = CurFrame->ChainedParent;
+}
+
+void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except) {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (CurFrame->ChainedParent)
+ report_fatal_error("Chained unwind areas can't have handlers!");
+ CurFrame->ExceptionHandler = Sym;
+ if (!Except && !Unwind)
+ report_fatal_error("Don't know what kind of handler this is!");
+ if (Unwind)
+ CurFrame->HandlesUnwind = true;
+ if (Except)
+ CurFrame->HandlesExceptions = true;
+}
+
+void MCStreamer::EmitWin64EHHandlerData() {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ if (CurFrame->ChainedParent)
+ report_fatal_error("Chained unwind areas can't have handlers!");
+}
+
+void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Register);
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
+ EnsureValidW64UnwindInfo();
+ if (Offset & 0x0F)
+ report_fatal_error("Misaligned frame pointer offset!");
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Register, Offset);
+ CurFrame->LastFrameInst = CurFrame->Instructions.size();
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
+ EnsureValidW64UnwindInfo();
+ if (Size & 7)
+ report_fatal_error("Misaligned stack allocation!");
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(Size);
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
+ EnsureValidW64UnwindInfo();
+ if (Offset & 7)
+ report_fatal_error("Misaligned saved register offset!");
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(
+ Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVol : Win64EH::UOP_SaveNonVolBig,
+ Register, Offset);
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
+ EnsureValidW64UnwindInfo();
+ if (Offset & 0x0F)
+ report_fatal_error("Misaligned saved vector register offset!");
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(
+ Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128 : Win64EH::UOP_SaveXMM128Big,
+ Register, Offset);
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHPushFrame(bool Code) {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Code);
+ CurFrame->Instructions.push_back(Inst);
+}
+
+void MCStreamer::EmitWin64EHEndProlog() {
+ EnsureValidW64UnwindInfo();
+ MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
+ CurFrame->PrologEnd = getContext().CreateTempSymbol();
+ EmitLabel(CurFrame->PrologEnd);
}
void MCStreamer::EmitFnStart() {
if (EmitDebugFrame)
MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
}
+
+void MCStreamer::EmitW64Tables() {
+ if (!getNumW64UnwindInfos())
+ return;
+
+ MCWin64EHUnwindEmitter::Emit(*this);
+}