1 //===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCStreamer.h"
11 #include "llvm/ADT/SmallString.h"
12 #include "llvm/ADT/Twine.h"
13 #include "llvm/MC/MCAsmInfo.h"
14 #include "llvm/MC/MCContext.h"
15 #include "llvm/MC/MCExpr.h"
16 #include "llvm/MC/MCObjectWriter.h"
17 #include "llvm/MC/MCSymbol.h"
18 #include "llvm/Support/ErrorHandling.h"
19 #include "llvm/Support/LEB128.h"
20 #include "llvm/Support/raw_ostream.h"
24 MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx)
25 : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
26 CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
27 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
30 MCStreamer::~MCStreamer() {
31 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
32 delete W64UnwindInfos[i];
35 void MCStreamer::reset() {
36 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
37 delete W64UnwindInfos[i];
38 W64UnwindInfos.clear();
40 EmitDebugFrame = false;
41 CurrentW64UnwindInfo = 0;
44 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
47 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
50 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
52 MCSymbolRefExpr::Create(A, Variant, Context);
54 MCSymbolRefExpr::Create(B, Variant, Context);
55 const MCExpr *AddrDelta =
56 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
60 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
61 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
62 isa<MCSymbolRefExpr>(Expr))
65 MCSymbol *ABS = Context.CreateTempSymbol();
66 EmitAssignment(ABS, Expr);
67 return MCSymbolRefExpr::Create(ABS, Context);
70 raw_ostream &MCStreamer::GetCommentOS() {
71 // By default, discard comments.
75 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
76 const MCSymbol *Label, int PointerSize) {
77 // emit the sequence to set the address
78 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
79 EmitULEB128IntValue(PointerSize + 1);
80 EmitIntValue(dwarf::DW_LNE_set_address, 1);
81 EmitSymbolValue(Label, PointerSize);
83 // emit the sequence for the LineDelta (from 1) and a zero address delta.
84 MCDwarfLineAddr::Emit(this, LineDelta, 0);
87 /// EmitIntValue - Special case of EmitValue that avoids the client having to
88 /// pass in a MCExpr for constant integers.
89 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
90 assert(Size <= 8 && "Invalid size");
91 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
94 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
95 for (unsigned i = 0; i != Size; ++i) {
96 unsigned index = isLittleEndian ? i : (Size - i - 1);
97 buf[i] = uint8_t(Value >> (index * 8));
99 EmitBytes(StringRef(buf, Size));
102 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
103 /// client having to pass in a MCExpr for constant integers.
104 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
105 SmallString<128> Tmp;
106 raw_svector_ostream OSE(Tmp);
107 encodeULEB128(Value, OSE, Padding);
108 EmitBytes(OSE.str());
111 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
112 /// client having to pass in a MCExpr for constant integers.
113 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
114 SmallString<128> Tmp;
115 raw_svector_ostream OSE(Tmp);
116 encodeSLEB128(Value, OSE);
117 EmitBytes(OSE.str());
120 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
121 const MCExpr *ABS = ForceExpAbs(Value);
122 EmitValue(ABS, Size);
126 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
127 EmitValueImpl(Value, Size);
130 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
131 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
134 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
135 report_fatal_error("unsupported directive in streamer");
138 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
139 report_fatal_error("unsupported directive in streamer");
142 /// EmitFill - Emit NumBytes bytes worth of the value specified by
143 /// FillValue. This implements directives such as '.space'.
144 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
145 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
146 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
150 /// The implementation in this class just redirects to EmitFill.
151 void MCStreamer::EmitZeros(uint64_t NumBytes) {
152 EmitFill(NumBytes, 0);
155 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
157 StringRef Filename, unsigned CUID) {
158 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
161 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
162 unsigned Column, unsigned Flags,
164 unsigned Discriminator,
165 StringRef FileName) {
166 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
170 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
171 if (FrameInfos.empty())
173 return &FrameInfos.back();
176 void MCStreamer::EnsureValidFrame() {
177 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
178 if (!CurFrame || CurFrame->End)
179 report_fatal_error("No open frame");
182 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
183 MCSymbol *EHSymbol) {
186 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
187 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
188 assert(getCurrentSection().first && "Cannot emit before setting section!");
189 Symbol->setSection(*getCurrentSection().first);
193 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
194 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
195 assert(getCurrentSection().first && "Cannot emit before setting section!");
196 Symbol->setSection(*getCurrentSection().first);
200 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
202 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
203 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
206 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
209 EmitDebugFrame = Debug;
212 void MCStreamer::EmitCFIStartProc() {
213 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
214 if (CurFrame && !CurFrame->End)
215 report_fatal_error("Starting a frame before finishing the previous one!");
217 MCDwarfFrameInfo Frame;
218 EmitCFIStartProcImpl(Frame);
220 FrameInfos.push_back(Frame);
223 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
226 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
227 Frame.Function = LastSymbol;
228 // If the function is externally visible, we need to create a local
229 // symbol to avoid relocations.
230 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
231 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
232 Frame.Begin = LastSymbol;
234 Frame.Begin = getContext().CreateTempSymbol();
235 EmitLabel(Frame.Begin);
239 void MCStreamer::EmitCFIEndProc() {
241 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
242 EmitCFIEndProcImpl(*CurFrame);
245 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
248 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
249 Frame.End = getContext().CreateTempSymbol();
250 EmitLabel(Frame.End);
253 MCSymbol *MCStreamer::EmitCFICommon() {
255 MCSymbol *Label = getContext().CreateTempSymbol();
260 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
261 MCSymbol *Label = EmitCFICommon();
262 MCCFIInstruction Instruction =
263 MCCFIInstruction::createDefCfa(Label, Register, Offset);
264 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
265 CurFrame->Instructions.push_back(Instruction);
268 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
269 MCSymbol *Label = EmitCFICommon();
270 MCCFIInstruction Instruction =
271 MCCFIInstruction::createDefCfaOffset(Label, Offset);
272 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
273 CurFrame->Instructions.push_back(Instruction);
276 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
277 MCSymbol *Label = EmitCFICommon();
278 MCCFIInstruction Instruction =
279 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
280 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
281 CurFrame->Instructions.push_back(Instruction);
284 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
285 MCSymbol *Label = EmitCFICommon();
286 MCCFIInstruction Instruction =
287 MCCFIInstruction::createDefCfaRegister(Label, Register);
288 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
289 CurFrame->Instructions.push_back(Instruction);
292 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
293 MCSymbol *Label = EmitCFICommon();
294 MCCFIInstruction Instruction =
295 MCCFIInstruction::createOffset(Label, Register, Offset);
296 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
297 CurFrame->Instructions.push_back(Instruction);
300 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
301 MCSymbol *Label = EmitCFICommon();
302 MCCFIInstruction Instruction =
303 MCCFIInstruction::createRelOffset(Label, Register, Offset);
304 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
305 CurFrame->Instructions.push_back(Instruction);
308 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
311 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
312 CurFrame->Personality = Sym;
313 CurFrame->PersonalityEncoding = Encoding;
316 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
318 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
319 CurFrame->Lsda = Sym;
320 CurFrame->LsdaEncoding = Encoding;
323 void MCStreamer::EmitCFIRememberState() {
324 MCSymbol *Label = EmitCFICommon();
325 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
326 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
327 CurFrame->Instructions.push_back(Instruction);
330 void MCStreamer::EmitCFIRestoreState() {
331 // FIXME: Error if there is no matching cfi_remember_state.
332 MCSymbol *Label = EmitCFICommon();
333 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
334 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
335 CurFrame->Instructions.push_back(Instruction);
338 void MCStreamer::EmitCFISameValue(int64_t Register) {
339 MCSymbol *Label = EmitCFICommon();
340 MCCFIInstruction Instruction =
341 MCCFIInstruction::createSameValue(Label, Register);
342 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
343 CurFrame->Instructions.push_back(Instruction);
346 void MCStreamer::EmitCFIRestore(int64_t Register) {
347 MCSymbol *Label = EmitCFICommon();
348 MCCFIInstruction Instruction =
349 MCCFIInstruction::createRestore(Label, Register);
350 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
351 CurFrame->Instructions.push_back(Instruction);
354 void MCStreamer::EmitCFIEscape(StringRef Values) {
355 MCSymbol *Label = EmitCFICommon();
356 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
357 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
358 CurFrame->Instructions.push_back(Instruction);
361 void MCStreamer::EmitCFISignalFrame() {
363 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
364 CurFrame->IsSignalFrame = true;
367 void MCStreamer::EmitCFIUndefined(int64_t Register) {
368 MCSymbol *Label = EmitCFICommon();
369 MCCFIInstruction Instruction =
370 MCCFIInstruction::createUndefined(Label, Register);
371 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
372 CurFrame->Instructions.push_back(Instruction);
375 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
376 MCSymbol *Label = EmitCFICommon();
377 MCCFIInstruction Instruction =
378 MCCFIInstruction::createRegister(Label, Register1, Register2);
379 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
380 CurFrame->Instructions.push_back(Instruction);
383 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
384 W64UnwindInfos.push_back(Frame);
385 CurrentW64UnwindInfo = W64UnwindInfos.back();
388 void MCStreamer::EnsureValidW64UnwindInfo() {
389 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
390 if (!CurFrame || CurFrame->End)
391 report_fatal_error("No open Win64 EH frame function!");
394 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
395 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
396 if (CurFrame && !CurFrame->End)
397 report_fatal_error("Starting a function before ending the previous one!");
398 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
399 Frame->Begin = getContext().CreateTempSymbol();
400 Frame->Function = Symbol;
401 EmitLabel(Frame->Begin);
402 setCurrentW64UnwindInfo(Frame);
405 void MCStreamer::EmitWin64EHEndProc() {
406 EnsureValidW64UnwindInfo();
407 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
408 if (CurFrame->ChainedParent)
409 report_fatal_error("Not all chained regions terminated!");
410 CurFrame->End = getContext().CreateTempSymbol();
411 EmitLabel(CurFrame->End);
414 void MCStreamer::EmitWin64EHStartChained() {
415 EnsureValidW64UnwindInfo();
416 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
417 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
418 Frame->Begin = getContext().CreateTempSymbol();
419 Frame->Function = CurFrame->Function;
420 Frame->ChainedParent = CurFrame;
421 EmitLabel(Frame->Begin);
422 setCurrentW64UnwindInfo(Frame);
425 void MCStreamer::EmitWin64EHEndChained() {
426 EnsureValidW64UnwindInfo();
427 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
428 if (!CurFrame->ChainedParent)
429 report_fatal_error("End of a chained region outside a chained region!");
430 CurFrame->End = getContext().CreateTempSymbol();
431 EmitLabel(CurFrame->End);
432 CurrentW64UnwindInfo = CurFrame->ChainedParent;
435 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
437 EnsureValidW64UnwindInfo();
438 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
439 if (CurFrame->ChainedParent)
440 report_fatal_error("Chained unwind areas can't have handlers!");
441 CurFrame->ExceptionHandler = Sym;
442 if (!Except && !Unwind)
443 report_fatal_error("Don't know what kind of handler this is!");
445 CurFrame->HandlesUnwind = true;
447 CurFrame->HandlesExceptions = true;
450 void MCStreamer::EmitWin64EHHandlerData() {
451 EnsureValidW64UnwindInfo();
452 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
453 if (CurFrame->ChainedParent)
454 report_fatal_error("Chained unwind areas can't have handlers!");
457 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
458 EnsureValidW64UnwindInfo();
459 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
460 MCSymbol *Label = getContext().CreateTempSymbol();
461 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
463 CurFrame->Instructions.push_back(Inst);
466 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
467 EnsureValidW64UnwindInfo();
468 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
469 if (CurFrame->LastFrameInst >= 0)
470 report_fatal_error("Frame register and offset already specified!");
472 report_fatal_error("Misaligned frame pointer offset!");
473 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, 0, Register, Offset);
474 CurFrame->LastFrameInst = CurFrame->Instructions.size();
475 CurFrame->Instructions.push_back(Inst);
478 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
479 EnsureValidW64UnwindInfo();
481 report_fatal_error("Misaligned stack allocation!");
482 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
483 MCSymbol *Label = getContext().CreateTempSymbol();
484 MCWin64EHInstruction Inst(Label, Size);
486 CurFrame->Instructions.push_back(Inst);
489 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
490 EnsureValidW64UnwindInfo();
492 report_fatal_error("Misaligned saved register offset!");
493 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
494 MCSymbol *Label = getContext().CreateTempSymbol();
495 MCWin64EHInstruction Inst(
496 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
497 Label, Register, Offset);
499 CurFrame->Instructions.push_back(Inst);
502 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
503 EnsureValidW64UnwindInfo();
505 report_fatal_error("Misaligned saved vector register offset!");
506 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
507 MCSymbol *Label = getContext().CreateTempSymbol();
508 MCWin64EHInstruction Inst(
509 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
510 Label, Register, Offset);
512 CurFrame->Instructions.push_back(Inst);
515 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
516 EnsureValidW64UnwindInfo();
517 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
518 if (CurFrame->Instructions.size() > 0)
519 report_fatal_error("If present, PushMachFrame must be the first UOP");
520 MCSymbol *Label = getContext().CreateTempSymbol();
521 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
523 CurFrame->Instructions.push_back(Inst);
526 void MCStreamer::EmitWin64EHEndProlog() {
527 EnsureValidW64UnwindInfo();
528 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
529 CurFrame->PrologEnd = getContext().CreateTempSymbol();
530 EmitLabel(CurFrame->PrologEnd);
533 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
534 llvm_unreachable("This file format doesn't support this directive");
537 void MCStreamer::EmitFnStart() {
538 errs() << "Not implemented yet\n";
542 void MCStreamer::EmitFnEnd() {
543 errs() << "Not implemented yet\n";
547 void MCStreamer::EmitCantUnwind() {
548 errs() << "Not implemented yet\n";
552 void MCStreamer::EmitHandlerData() {
553 errs() << "Not implemented yet\n";
557 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
558 errs() << "Not implemented yet\n";
562 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
563 errs() << "Not implemented yet\n";
567 void MCStreamer::EmitPad(int64_t Offset) {
568 errs() << "Not implemented yet\n";
572 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
573 errs() << "Not implemented yet\n";
577 void MCStreamer::EmitTCEntry(const MCSymbol &S) {
578 llvm_unreachable("Unsupported method");
581 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
582 /// the specified string in the output .s file. This capability is
583 /// indicated by the hasRawTextSupport() predicate.
584 void MCStreamer::EmitRawText(StringRef String) {
585 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
586 " something must not be fully mc'ized\n";
590 void MCStreamer::EmitRawText(const Twine &T) {
591 SmallString<128> Str;
593 EmitRawText(Str.str());
596 void MCStreamer::EmitFrames(bool usingCFI) {
597 if (!getNumFrameInfos())
601 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
604 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
607 void MCStreamer::EmitW64Tables() {
608 if (!getNumW64UnwindInfos())
611 MCWin64EHUnwindEmitter::Emit(*this);
614 void MCStreamer::Finish() {
615 if (!FrameInfos.empty() && !FrameInfos.back().End)
616 report_fatal_error("Unfinished frame!");
621 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
622 report_fatal_error("Not supported!");
623 return *(static_cast<MCSymbolData*>(0));