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/MCAsmBackend.h"
14 #include "llvm/MC/MCAsmInfo.h"
15 #include "llvm/MC/MCContext.h"
16 #include "llvm/MC/MCExpr.h"
17 #include "llvm/MC/MCObjectWriter.h"
18 #include "llvm/MC/MCSymbol.h"
19 #include "llvm/Support/ErrorHandling.h"
20 #include "llvm/Support/LEB128.h"
21 #include "llvm/Support/raw_ostream.h"
25 MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx)
26 : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
27 CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
28 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
31 MCStreamer::~MCStreamer() {
32 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
33 delete W64UnwindInfos[i];
36 void MCStreamer::reset() {
37 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
38 delete W64UnwindInfos[i];
39 W64UnwindInfos.clear();
41 EmitDebugFrame = false;
42 CurrentW64UnwindInfo = 0;
45 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
48 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
51 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
53 MCSymbolRefExpr::Create(A, Variant, Context);
55 MCSymbolRefExpr::Create(B, Variant, Context);
56 const MCExpr *AddrDelta =
57 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
61 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
62 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
63 isa<MCSymbolRefExpr>(Expr))
66 MCSymbol *ABS = Context.CreateTempSymbol();
67 EmitAssignment(ABS, Expr);
68 return MCSymbolRefExpr::Create(ABS, Context);
71 raw_ostream &MCStreamer::GetCommentOS() {
72 // By default, discard comments.
76 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend &MAB) {
77 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
78 E = FrameInfos.end(); I != E; ++I)
79 if (!I->CompactUnwindEncoding)
80 I->CompactUnwindEncoding =
81 MAB.generateCompactUnwindEncoding(I->Instructions);
84 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
85 const MCSymbol *Label, int PointerSize) {
86 // emit the sequence to set the address
87 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
88 EmitULEB128IntValue(PointerSize + 1);
89 EmitIntValue(dwarf::DW_LNE_set_address, 1);
90 EmitSymbolValue(Label, PointerSize);
92 // emit the sequence for the LineDelta (from 1) and a zero address delta.
93 MCDwarfLineAddr::Emit(this, LineDelta, 0);
96 /// EmitIntValue - Special case of EmitValue that avoids the client having to
97 /// pass in a MCExpr for constant integers.
98 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
99 assert(Size <= 8 && "Invalid size");
100 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
103 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
104 for (unsigned i = 0; i != Size; ++i) {
105 unsigned index = isLittleEndian ? i : (Size - i - 1);
106 buf[i] = uint8_t(Value >> (index * 8));
108 EmitBytes(StringRef(buf, Size));
111 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
112 /// client having to pass in a MCExpr for constant integers.
113 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
114 SmallString<128> Tmp;
115 raw_svector_ostream OSE(Tmp);
116 encodeULEB128(Value, OSE, Padding);
117 EmitBytes(OSE.str());
120 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
121 /// client having to pass in a MCExpr for constant integers.
122 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
123 SmallString<128> Tmp;
124 raw_svector_ostream OSE(Tmp);
125 encodeSLEB128(Value, OSE);
126 EmitBytes(OSE.str());
129 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
130 const MCExpr *ABS = ForceExpAbs(Value);
131 EmitValue(ABS, Size);
135 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
136 EmitValueImpl(Value, Size);
139 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
140 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
143 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
144 report_fatal_error("unsupported directive in streamer");
147 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
148 report_fatal_error("unsupported directive in streamer");
151 /// EmitFill - Emit NumBytes bytes worth of the value specified by
152 /// FillValue. This implements directives such as '.space'.
153 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
154 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
155 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
159 /// The implementation in this class just redirects to EmitFill.
160 void MCStreamer::EmitZeros(uint64_t NumBytes) {
161 EmitFill(NumBytes, 0);
164 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
166 StringRef Filename, unsigned CUID) {
167 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
170 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
171 unsigned Column, unsigned Flags,
173 unsigned Discriminator,
174 StringRef FileName) {
175 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
179 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
180 if (FrameInfos.empty())
182 return &FrameInfos.back();
185 void MCStreamer::EnsureValidFrame() {
186 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
187 if (!CurFrame || CurFrame->End)
188 report_fatal_error("No open frame");
191 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
192 MCSymbol *EHSymbol) {
195 void MCStreamer::EmitLabel(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::EmitDebugLabel(MCSymbol *Symbol) {
203 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
204 assert(getCurrentSection().first && "Cannot emit before setting section!");
205 Symbol->setSection(*getCurrentSection().first);
209 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
211 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
212 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
215 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
218 EmitDebugFrame = Debug;
221 void MCStreamer::EmitCFIStartProc() {
222 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
223 if (CurFrame && !CurFrame->End)
224 report_fatal_error("Starting a frame before finishing the previous one!");
226 MCDwarfFrameInfo Frame;
227 EmitCFIStartProcImpl(Frame);
229 FrameInfos.push_back(Frame);
232 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
235 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
236 Frame.Function = LastSymbol;
237 // If the function is externally visible, we need to create a local
238 // symbol to avoid relocations.
239 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
240 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
241 Frame.Begin = LastSymbol;
243 Frame.Begin = getContext().CreateTempSymbol();
244 EmitLabel(Frame.Begin);
248 void MCStreamer::EmitCFIEndProc() {
250 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
251 EmitCFIEndProcImpl(*CurFrame);
254 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
257 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
258 Frame.End = getContext().CreateTempSymbol();
259 EmitLabel(Frame.End);
262 MCSymbol *MCStreamer::EmitCFICommon() {
264 MCSymbol *Label = getContext().CreateTempSymbol();
269 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
270 MCSymbol *Label = EmitCFICommon();
271 MCCFIInstruction Instruction =
272 MCCFIInstruction::createDefCfa(Label, Register, Offset);
273 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
274 CurFrame->Instructions.push_back(Instruction);
277 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
278 MCSymbol *Label = EmitCFICommon();
279 MCCFIInstruction Instruction =
280 MCCFIInstruction::createDefCfaOffset(Label, Offset);
281 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
282 CurFrame->Instructions.push_back(Instruction);
285 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
286 MCSymbol *Label = EmitCFICommon();
287 MCCFIInstruction Instruction =
288 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
289 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
290 CurFrame->Instructions.push_back(Instruction);
293 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
294 MCSymbol *Label = EmitCFICommon();
295 MCCFIInstruction Instruction =
296 MCCFIInstruction::createDefCfaRegister(Label, Register);
297 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
298 CurFrame->Instructions.push_back(Instruction);
301 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
302 MCSymbol *Label = EmitCFICommon();
303 MCCFIInstruction Instruction =
304 MCCFIInstruction::createOffset(Label, Register, Offset);
305 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
306 CurFrame->Instructions.push_back(Instruction);
309 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
310 MCSymbol *Label = EmitCFICommon();
311 MCCFIInstruction Instruction =
312 MCCFIInstruction::createRelOffset(Label, Register, Offset);
313 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
314 CurFrame->Instructions.push_back(Instruction);
317 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
320 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
321 CurFrame->Personality = Sym;
322 CurFrame->PersonalityEncoding = Encoding;
325 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
327 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
328 CurFrame->Lsda = Sym;
329 CurFrame->LsdaEncoding = Encoding;
332 void MCStreamer::EmitCFIRememberState() {
333 MCSymbol *Label = EmitCFICommon();
334 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
335 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
336 CurFrame->Instructions.push_back(Instruction);
339 void MCStreamer::EmitCFIRestoreState() {
340 // FIXME: Error if there is no matching cfi_remember_state.
341 MCSymbol *Label = EmitCFICommon();
342 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
343 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
344 CurFrame->Instructions.push_back(Instruction);
347 void MCStreamer::EmitCFISameValue(int64_t Register) {
348 MCSymbol *Label = EmitCFICommon();
349 MCCFIInstruction Instruction =
350 MCCFIInstruction::createSameValue(Label, Register);
351 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
352 CurFrame->Instructions.push_back(Instruction);
355 void MCStreamer::EmitCFIRestore(int64_t Register) {
356 MCSymbol *Label = EmitCFICommon();
357 MCCFIInstruction Instruction =
358 MCCFIInstruction::createRestore(Label, Register);
359 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
360 CurFrame->Instructions.push_back(Instruction);
363 void MCStreamer::EmitCFIEscape(StringRef Values) {
364 MCSymbol *Label = EmitCFICommon();
365 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
366 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
367 CurFrame->Instructions.push_back(Instruction);
370 void MCStreamer::EmitCFISignalFrame() {
372 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
373 CurFrame->IsSignalFrame = true;
376 void MCStreamer::EmitCFIUndefined(int64_t Register) {
377 MCSymbol *Label = EmitCFICommon();
378 MCCFIInstruction Instruction =
379 MCCFIInstruction::createUndefined(Label, Register);
380 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
381 CurFrame->Instructions.push_back(Instruction);
384 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
385 MCSymbol *Label = EmitCFICommon();
386 MCCFIInstruction Instruction =
387 MCCFIInstruction::createRegister(Label, Register1, Register2);
388 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
389 CurFrame->Instructions.push_back(Instruction);
392 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
393 W64UnwindInfos.push_back(Frame);
394 CurrentW64UnwindInfo = W64UnwindInfos.back();
397 void MCStreamer::EnsureValidW64UnwindInfo() {
398 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
399 if (!CurFrame || CurFrame->End)
400 report_fatal_error("No open Win64 EH frame function!");
403 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
404 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
405 if (CurFrame && !CurFrame->End)
406 report_fatal_error("Starting a function before ending the previous one!");
407 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
408 Frame->Begin = getContext().CreateTempSymbol();
409 Frame->Function = Symbol;
410 EmitLabel(Frame->Begin);
411 setCurrentW64UnwindInfo(Frame);
414 void MCStreamer::EmitWin64EHEndProc() {
415 EnsureValidW64UnwindInfo();
416 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
417 if (CurFrame->ChainedParent)
418 report_fatal_error("Not all chained regions terminated!");
419 CurFrame->End = getContext().CreateTempSymbol();
420 EmitLabel(CurFrame->End);
423 void MCStreamer::EmitWin64EHStartChained() {
424 EnsureValidW64UnwindInfo();
425 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
426 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
427 Frame->Begin = getContext().CreateTempSymbol();
428 Frame->Function = CurFrame->Function;
429 Frame->ChainedParent = CurFrame;
430 EmitLabel(Frame->Begin);
431 setCurrentW64UnwindInfo(Frame);
434 void MCStreamer::EmitWin64EHEndChained() {
435 EnsureValidW64UnwindInfo();
436 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
437 if (!CurFrame->ChainedParent)
438 report_fatal_error("End of a chained region outside a chained region!");
439 CurFrame->End = getContext().CreateTempSymbol();
440 EmitLabel(CurFrame->End);
441 CurrentW64UnwindInfo = CurFrame->ChainedParent;
444 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
446 EnsureValidW64UnwindInfo();
447 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
448 if (CurFrame->ChainedParent)
449 report_fatal_error("Chained unwind areas can't have handlers!");
450 CurFrame->ExceptionHandler = Sym;
451 if (!Except && !Unwind)
452 report_fatal_error("Don't know what kind of handler this is!");
454 CurFrame->HandlesUnwind = true;
456 CurFrame->HandlesExceptions = true;
459 void MCStreamer::EmitWin64EHHandlerData() {
460 EnsureValidW64UnwindInfo();
461 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
462 if (CurFrame->ChainedParent)
463 report_fatal_error("Chained unwind areas can't have handlers!");
466 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
467 EnsureValidW64UnwindInfo();
468 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
469 MCSymbol *Label = getContext().CreateTempSymbol();
470 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
472 CurFrame->Instructions.push_back(Inst);
475 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
476 EnsureValidW64UnwindInfo();
477 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
478 if (CurFrame->LastFrameInst >= 0)
479 report_fatal_error("Frame register and offset already specified!");
481 report_fatal_error("Misaligned frame pointer offset!");
482 MCSymbol *Label = getContext().CreateTempSymbol();
483 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
485 CurFrame->LastFrameInst = CurFrame->Instructions.size();
486 CurFrame->Instructions.push_back(Inst);
489 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
490 EnsureValidW64UnwindInfo();
492 report_fatal_error("Misaligned stack allocation!");
493 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
494 MCSymbol *Label = getContext().CreateTempSymbol();
495 MCWin64EHInstruction Inst(Label, Size);
497 CurFrame->Instructions.push_back(Inst);
500 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
501 EnsureValidW64UnwindInfo();
503 report_fatal_error("Misaligned saved register offset!");
504 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
505 MCSymbol *Label = getContext().CreateTempSymbol();
506 MCWin64EHInstruction Inst(
507 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
508 Label, Register, Offset);
510 CurFrame->Instructions.push_back(Inst);
513 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
514 EnsureValidW64UnwindInfo();
516 report_fatal_error("Misaligned saved vector register offset!");
517 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
518 MCSymbol *Label = getContext().CreateTempSymbol();
519 MCWin64EHInstruction Inst(
520 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
521 Label, Register, Offset);
523 CurFrame->Instructions.push_back(Inst);
526 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
527 EnsureValidW64UnwindInfo();
528 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
529 if (CurFrame->Instructions.size() > 0)
530 report_fatal_error("If present, PushMachFrame must be the first UOP");
531 MCSymbol *Label = getContext().CreateTempSymbol();
532 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
534 CurFrame->Instructions.push_back(Inst);
537 void MCStreamer::EmitWin64EHEndProlog() {
538 EnsureValidW64UnwindInfo();
539 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
540 CurFrame->PrologEnd = getContext().CreateTempSymbol();
541 EmitLabel(CurFrame->PrologEnd);
544 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
545 llvm_unreachable("This file format doesn't support this directive");
548 void MCStreamer::EmitFnStart() {
549 errs() << "Not implemented yet\n";
553 void MCStreamer::EmitFnEnd() {
554 errs() << "Not implemented yet\n";
558 void MCStreamer::EmitCantUnwind() {
559 errs() << "Not implemented yet\n";
563 void MCStreamer::EmitHandlerData() {
564 errs() << "Not implemented yet\n";
568 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
569 errs() << "Not implemented yet\n";
573 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
574 errs() << "Not implemented yet\n";
578 void MCStreamer::EmitPad(int64_t Offset) {
579 errs() << "Not implemented yet\n";
583 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
584 errs() << "Not implemented yet\n";
588 void MCStreamer::EmitTCEntry(const MCSymbol &S) {
589 llvm_unreachable("Unsupported method");
592 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
593 /// the specified string in the output .s file. This capability is
594 /// indicated by the hasRawTextSupport() predicate.
595 void MCStreamer::EmitRawText(StringRef String) {
596 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
597 " something must not be fully mc'ized\n";
601 void MCStreamer::EmitRawText(const Twine &T) {
602 SmallString<128> Str;
604 EmitRawText(Str.str());
607 void MCStreamer::EmitFrames(bool usingCFI) {
608 if (!getNumFrameInfos())
612 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
615 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
618 void MCStreamer::EmitW64Tables() {
619 if (!getNumW64UnwindInfos())
622 MCWin64EHUnwindEmitter::Emit(*this);
625 void MCStreamer::Finish() {
626 if (!FrameInfos.empty() && !FrameInfos.back().End)
627 report_fatal_error("Unfinished frame!");
632 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
633 report_fatal_error("Not supported!");
634 return *(static_cast<MCSymbolData*>(0));