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,
91 assert(Size <= 8 && "Invalid size");
92 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
95 const bool isLittleEndian = Context.getAsmInfo().isLittleEndian();
96 for (unsigned i = 0; i != Size; ++i) {
97 unsigned index = isLittleEndian ? i : (Size - i - 1);
98 buf[i] = uint8_t(Value >> (index * 8));
100 EmitBytes(StringRef(buf, Size), AddrSpace);
103 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
104 /// client having to pass in a MCExpr for constant integers.
105 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding,
106 unsigned AddrSpace) {
107 SmallString<128> Tmp;
108 raw_svector_ostream OSE(Tmp);
109 encodeULEB128(Value, OSE, Padding);
110 EmitBytes(OSE.str(), AddrSpace);
113 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
114 /// client having to pass in a MCExpr for constant integers.
115 void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) {
116 SmallString<128> Tmp;
117 raw_svector_ostream OSE(Tmp);
118 encodeSLEB128(Value, OSE);
119 EmitBytes(OSE.str(), AddrSpace);
122 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
123 unsigned AddrSpace) {
124 const MCExpr *ABS = ForceExpAbs(Value);
125 EmitValue(ABS, Size, AddrSpace);
129 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
130 unsigned AddrSpace) {
131 EmitValueImpl(Value, Size, AddrSpace);
134 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
135 unsigned AddrSpace) {
136 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size,
140 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
141 report_fatal_error("unsupported directive in streamer");
144 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
145 report_fatal_error("unsupported directive in streamer");
148 /// EmitFill - Emit NumBytes bytes worth of the value specified by
149 /// FillValue. This implements directives such as '.space'.
150 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
151 unsigned AddrSpace) {
152 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
153 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
154 EmitValue(E, 1, AddrSpace);
157 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
159 StringRef Filename, unsigned CUID) {
160 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
163 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
164 unsigned Column, unsigned Flags,
166 unsigned Discriminator,
167 StringRef FileName) {
168 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
172 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
173 if (FrameInfos.empty())
175 return &FrameInfos.back();
178 void MCStreamer::EnsureValidFrame() {
179 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
180 if (!CurFrame || CurFrame->End)
181 report_fatal_error("No open frame");
184 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
185 MCSymbol *EHSymbol) {
188 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
189 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
190 assert(getCurrentSection().first && "Cannot emit before setting section!");
191 Symbol->setSection(*getCurrentSection().first);
195 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
196 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
197 assert(getCurrentSection().first && "Cannot emit before setting section!");
198 Symbol->setSection(*getCurrentSection().first);
202 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
204 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
205 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
208 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
211 EmitDebugFrame = Debug;
214 void MCStreamer::EmitCFIStartProc() {
215 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
216 if (CurFrame && !CurFrame->End)
217 report_fatal_error("Starting a frame before finishing the previous one!");
219 MCDwarfFrameInfo Frame;
220 EmitCFIStartProcImpl(Frame);
222 FrameInfos.push_back(Frame);
225 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
228 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
229 Frame.Function = LastSymbol;
230 // If the function is externally visible, we need to create a local
231 // symbol to avoid relocations.
232 StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
233 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
234 Frame.Begin = LastSymbol;
236 Frame.Begin = getContext().CreateTempSymbol();
237 EmitLabel(Frame.Begin);
241 void MCStreamer::EmitCFIEndProc() {
243 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
244 EmitCFIEndProcImpl(*CurFrame);
247 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
250 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
251 Frame.End = getContext().CreateTempSymbol();
252 EmitLabel(Frame.End);
255 MCSymbol *MCStreamer::EmitCFICommon() {
257 MCSymbol *Label = getContext().CreateTempSymbol();
262 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
263 MCSymbol *Label = EmitCFICommon();
264 MCCFIInstruction Instruction =
265 MCCFIInstruction::createDefCfa(Label, Register, Offset);
266 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
267 CurFrame->Instructions.push_back(Instruction);
270 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
271 MCSymbol *Label = EmitCFICommon();
272 MCCFIInstruction Instruction =
273 MCCFIInstruction::createDefCfaOffset(Label, Offset);
274 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
275 CurFrame->Instructions.push_back(Instruction);
278 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
279 MCSymbol *Label = EmitCFICommon();
280 MCCFIInstruction Instruction =
281 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
282 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
283 CurFrame->Instructions.push_back(Instruction);
286 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
287 MCSymbol *Label = EmitCFICommon();
288 MCCFIInstruction Instruction =
289 MCCFIInstruction::createDefCfaRegister(Label, Register);
290 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
291 CurFrame->Instructions.push_back(Instruction);
294 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
295 MCSymbol *Label = EmitCFICommon();
296 MCCFIInstruction Instruction =
297 MCCFIInstruction::createOffset(Label, Register, Offset);
298 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
299 CurFrame->Instructions.push_back(Instruction);
302 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
303 MCSymbol *Label = EmitCFICommon();
304 MCCFIInstruction Instruction =
305 MCCFIInstruction::createRelOffset(Label, Register, Offset);
306 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
307 CurFrame->Instructions.push_back(Instruction);
310 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
313 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
314 CurFrame->Personality = Sym;
315 CurFrame->PersonalityEncoding = Encoding;
318 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
320 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
321 CurFrame->Lsda = Sym;
322 CurFrame->LsdaEncoding = Encoding;
325 void MCStreamer::EmitCFIRememberState() {
326 MCSymbol *Label = EmitCFICommon();
327 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
328 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
329 CurFrame->Instructions.push_back(Instruction);
332 void MCStreamer::EmitCFIRestoreState() {
333 // FIXME: Error if there is no matching cfi_remember_state.
334 MCSymbol *Label = EmitCFICommon();
335 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
336 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
337 CurFrame->Instructions.push_back(Instruction);
340 void MCStreamer::EmitCFISameValue(int64_t Register) {
341 MCSymbol *Label = EmitCFICommon();
342 MCCFIInstruction Instruction =
343 MCCFIInstruction::createSameValue(Label, Register);
344 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
345 CurFrame->Instructions.push_back(Instruction);
348 void MCStreamer::EmitCFIRestore(int64_t Register) {
349 MCSymbol *Label = EmitCFICommon();
350 MCCFIInstruction Instruction =
351 MCCFIInstruction::createRestore(Label, Register);
352 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
353 CurFrame->Instructions.push_back(Instruction);
356 void MCStreamer::EmitCFIEscape(StringRef Values) {
357 MCSymbol *Label = EmitCFICommon();
358 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
359 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
360 CurFrame->Instructions.push_back(Instruction);
363 void MCStreamer::EmitCFISignalFrame() {
365 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
366 CurFrame->IsSignalFrame = true;
369 void MCStreamer::EmitCFIUndefined(int64_t Register) {
370 MCSymbol *Label = EmitCFICommon();
371 MCCFIInstruction Instruction =
372 MCCFIInstruction::createUndefined(Label, Register);
373 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
374 CurFrame->Instructions.push_back(Instruction);
377 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
378 MCSymbol *Label = EmitCFICommon();
379 MCCFIInstruction Instruction =
380 MCCFIInstruction::createRegister(Label, Register1, Register2);
381 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
382 CurFrame->Instructions.push_back(Instruction);
385 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
386 W64UnwindInfos.push_back(Frame);
387 CurrentW64UnwindInfo = W64UnwindInfos.back();
390 void MCStreamer::EnsureValidW64UnwindInfo() {
391 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
392 if (!CurFrame || CurFrame->End)
393 report_fatal_error("No open Win64 EH frame function!");
396 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
397 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
398 if (CurFrame && !CurFrame->End)
399 report_fatal_error("Starting a function before ending the previous one!");
400 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
401 Frame->Begin = getContext().CreateTempSymbol();
402 Frame->Function = Symbol;
403 EmitLabel(Frame->Begin);
404 setCurrentW64UnwindInfo(Frame);
407 void MCStreamer::EmitWin64EHEndProc() {
408 EnsureValidW64UnwindInfo();
409 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
410 if (CurFrame->ChainedParent)
411 report_fatal_error("Not all chained regions terminated!");
412 CurFrame->End = getContext().CreateTempSymbol();
413 EmitLabel(CurFrame->End);
416 void MCStreamer::EmitWin64EHStartChained() {
417 EnsureValidW64UnwindInfo();
418 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
419 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
420 Frame->Begin = getContext().CreateTempSymbol();
421 Frame->Function = CurFrame->Function;
422 Frame->ChainedParent = CurFrame;
423 EmitLabel(Frame->Begin);
424 setCurrentW64UnwindInfo(Frame);
427 void MCStreamer::EmitWin64EHEndChained() {
428 EnsureValidW64UnwindInfo();
429 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
430 if (!CurFrame->ChainedParent)
431 report_fatal_error("End of a chained region outside a chained region!");
432 CurFrame->End = getContext().CreateTempSymbol();
433 EmitLabel(CurFrame->End);
434 CurrentW64UnwindInfo = CurFrame->ChainedParent;
437 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
439 EnsureValidW64UnwindInfo();
440 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
441 if (CurFrame->ChainedParent)
442 report_fatal_error("Chained unwind areas can't have handlers!");
443 CurFrame->ExceptionHandler = Sym;
444 if (!Except && !Unwind)
445 report_fatal_error("Don't know what kind of handler this is!");
447 CurFrame->HandlesUnwind = true;
449 CurFrame->HandlesExceptions = true;
452 void MCStreamer::EmitWin64EHHandlerData() {
453 EnsureValidW64UnwindInfo();
454 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
455 if (CurFrame->ChainedParent)
456 report_fatal_error("Chained unwind areas can't have handlers!");
459 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
460 EnsureValidW64UnwindInfo();
461 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
462 MCSymbol *Label = getContext().CreateTempSymbol();
463 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
465 CurFrame->Instructions.push_back(Inst);
468 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
469 EnsureValidW64UnwindInfo();
470 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
471 if (CurFrame->LastFrameInst >= 0)
472 report_fatal_error("Frame register and offset already specified!");
474 report_fatal_error("Misaligned frame pointer offset!");
475 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, 0, Register, Offset);
476 CurFrame->LastFrameInst = CurFrame->Instructions.size();
477 CurFrame->Instructions.push_back(Inst);
480 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
481 EnsureValidW64UnwindInfo();
483 report_fatal_error("Misaligned stack allocation!");
484 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
485 MCSymbol *Label = getContext().CreateTempSymbol();
486 MCWin64EHInstruction Inst(Label, Size);
488 CurFrame->Instructions.push_back(Inst);
491 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
492 EnsureValidW64UnwindInfo();
494 report_fatal_error("Misaligned saved register offset!");
495 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
496 MCSymbol *Label = getContext().CreateTempSymbol();
497 MCWin64EHInstruction Inst(
498 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
499 Label, Register, Offset);
501 CurFrame->Instructions.push_back(Inst);
504 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
505 EnsureValidW64UnwindInfo();
507 report_fatal_error("Misaligned saved vector register offset!");
508 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
509 MCSymbol *Label = getContext().CreateTempSymbol();
510 MCWin64EHInstruction Inst(
511 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
512 Label, Register, Offset);
514 CurFrame->Instructions.push_back(Inst);
517 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
518 EnsureValidW64UnwindInfo();
519 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
520 if (CurFrame->Instructions.size() > 0)
521 report_fatal_error("If present, PushMachFrame must be the first UOP");
522 MCSymbol *Label = getContext().CreateTempSymbol();
523 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
525 CurFrame->Instructions.push_back(Inst);
528 void MCStreamer::EmitWin64EHEndProlog() {
529 EnsureValidW64UnwindInfo();
530 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
531 CurFrame->PrologEnd = getContext().CreateTempSymbol();
532 EmitLabel(CurFrame->PrologEnd);
535 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
536 llvm_unreachable("This file format doesn't support this directive");
539 void MCStreamer::EmitFnStart() {
540 errs() << "Not implemented yet\n";
544 void MCStreamer::EmitFnEnd() {
545 errs() << "Not implemented yet\n";
549 void MCStreamer::EmitCantUnwind() {
550 errs() << "Not implemented yet\n";
554 void MCStreamer::EmitHandlerData() {
555 errs() << "Not implemented yet\n";
559 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
560 errs() << "Not implemented yet\n";
564 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
565 errs() << "Not implemented yet\n";
569 void MCStreamer::EmitPad(int64_t Offset) {
570 errs() << "Not implemented yet\n";
574 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
575 errs() << "Not implemented yet\n";
579 void MCStreamer::EmitTCEntry(const MCSymbol &S) {
580 llvm_unreachable("Unsupported method");
583 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
584 /// the specified string in the output .s file. This capability is
585 /// indicated by the hasRawTextSupport() predicate.
586 void MCStreamer::EmitRawText(StringRef String) {
587 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
588 " something must not be fully mc'ized\n";
592 void MCStreamer::EmitRawText(const Twine &T) {
593 SmallString<128> Str;
595 EmitRawText(Str.str());
598 void MCStreamer::EmitFrames(bool usingCFI) {
599 if (!getNumFrameInfos())
603 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
606 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
609 void MCStreamer::EmitW64Tables() {
610 if (!getNumW64UnwindInfos())
613 MCWin64EHUnwindEmitter::Emit(*this);
616 void MCStreamer::Finish() {
617 if (!FrameInfos.empty() && !FrameInfos.back().End)
618 report_fatal_error("Unfinished frame!");
623 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
624 report_fatal_error("Not supported!");
625 return *(static_cast<MCSymbolData*>(0));