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 // Pin the vtables to this file.
26 MCTargetStreamer::~MCTargetStreamer() {}
27 void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
29 MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
30 : Context(Ctx), TargetStreamer(TargetStreamer), EmitEHFrame(true),
31 EmitDebugFrame(false), CurrentW64UnwindInfo(0), LastSymbol(0),
32 AutoInitSections(false) {
33 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
35 TargetStreamer->setStreamer(this);
38 MCStreamer::~MCStreamer() {
39 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
40 delete W64UnwindInfos[i];
43 void MCStreamer::reset() {
44 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
45 delete W64UnwindInfos[i];
46 W64UnwindInfos.clear();
48 EmitDebugFrame = false;
49 CurrentW64UnwindInfo = 0;
52 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
55 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
58 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
60 MCSymbolRefExpr::Create(A, Variant, Context);
62 MCSymbolRefExpr::Create(B, Variant, Context);
63 const MCExpr *AddrDelta =
64 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
68 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
69 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
70 isa<MCSymbolRefExpr>(Expr))
73 MCSymbol *ABS = Context.CreateTempSymbol();
74 EmitAssignment(ABS, Expr);
75 return MCSymbolRefExpr::Create(ABS, Context);
78 raw_ostream &MCStreamer::GetCommentOS() {
79 // By default, discard comments.
83 void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
85 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
86 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
87 E = FrameInfos.end(); I != E; ++I)
88 I->CompactUnwindEncoding =
89 (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
92 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
93 const MCSymbol *Label, int PointerSize) {
94 // emit the sequence to set the address
95 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
96 EmitULEB128IntValue(PointerSize + 1);
97 EmitIntValue(dwarf::DW_LNE_set_address, 1);
98 EmitSymbolValue(Label, PointerSize);
100 // emit the sequence for the LineDelta (from 1) and a zero address delta.
101 MCDwarfLineAddr::Emit(this, LineDelta, 0);
104 /// EmitIntValue - Special case of EmitValue that avoids the client having to
105 /// pass in a MCExpr for constant integers.
106 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
107 assert(Size <= 8 && "Invalid size");
108 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
111 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
112 for (unsigned i = 0; i != Size; ++i) {
113 unsigned index = isLittleEndian ? i : (Size - i - 1);
114 buf[i] = uint8_t(Value >> (index * 8));
116 EmitBytes(StringRef(buf, Size));
119 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
120 /// client having to pass in a MCExpr for constant integers.
121 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
122 SmallString<128> Tmp;
123 raw_svector_ostream OSE(Tmp);
124 encodeULEB128(Value, OSE, Padding);
125 EmitBytes(OSE.str());
128 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
129 /// client having to pass in a MCExpr for constant integers.
130 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
131 SmallString<128> Tmp;
132 raw_svector_ostream OSE(Tmp);
133 encodeSLEB128(Value, OSE);
134 EmitBytes(OSE.str());
137 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
138 const MCExpr *ABS = ForceExpAbs(Value);
139 EmitValue(ABS, Size);
143 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
144 EmitValueImpl(Value, Size);
147 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
148 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
151 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
152 report_fatal_error("unsupported directive in streamer");
155 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
156 report_fatal_error("unsupported directive in streamer");
159 /// EmitFill - Emit NumBytes bytes worth of the value specified by
160 /// FillValue. This implements directives such as '.space'.
161 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
162 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
163 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
167 /// The implementation in this class just redirects to EmitFill.
168 void MCStreamer::EmitZeros(uint64_t NumBytes) {
169 EmitFill(NumBytes, 0);
172 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
174 StringRef Filename, unsigned CUID) {
175 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
178 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
179 unsigned Column, unsigned Flags,
181 unsigned Discriminator,
182 StringRef FileName) {
183 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
187 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
188 if (FrameInfos.empty())
190 return &FrameInfos.back();
193 void MCStreamer::EnsureValidFrame() {
194 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
195 if (!CurFrame || CurFrame->End)
196 report_fatal_error("No open frame");
199 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
200 MCSymbol *EHSymbol) {
203 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
205 Symbol->setSection(*Section);
207 Symbol->setUndefined();
209 // As we emit symbols into a section, track the order so that they can
210 // be sorted upon later. Zero is reserved to mean 'unemitted'.
211 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
214 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
215 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
216 assert(getCurrentSection().first && "Cannot emit before setting section!");
217 AssignSection(Symbol, getCurrentSection().first);
220 MCTargetStreamer *TS = getTargetStreamer();
222 TS->emitLabel(Symbol);
225 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
226 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
227 assert(getCurrentSection().first && "Cannot emit before setting section!");
228 AssignSection(Symbol, getCurrentSection().first);
232 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
234 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
235 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
238 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
241 EmitDebugFrame = Debug;
244 void MCStreamer::EmitCFIStartProc() {
245 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
246 if (CurFrame && !CurFrame->End)
247 report_fatal_error("Starting a frame before finishing the previous one!");
249 MCDwarfFrameInfo Frame;
250 EmitCFIStartProcImpl(Frame);
252 FrameInfos.push_back(Frame);
255 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
258 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
259 Frame.Function = LastSymbol;
260 // If the function is externally visible, we need to create a local
261 // symbol to avoid relocations.
262 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
263 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
264 Frame.Begin = LastSymbol;
266 Frame.Begin = getContext().CreateTempSymbol();
267 EmitLabel(Frame.Begin);
271 void MCStreamer::EmitCFIEndProc() {
273 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
274 EmitCFIEndProcImpl(*CurFrame);
277 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
280 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
281 Frame.End = getContext().CreateTempSymbol();
282 EmitLabel(Frame.End);
285 MCSymbol *MCStreamer::EmitCFICommon() {
287 MCSymbol *Label = getContext().CreateTempSymbol();
292 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
293 MCSymbol *Label = EmitCFICommon();
294 MCCFIInstruction Instruction =
295 MCCFIInstruction::createDefCfa(Label, Register, Offset);
296 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
297 CurFrame->Instructions.push_back(Instruction);
300 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
301 MCSymbol *Label = EmitCFICommon();
302 MCCFIInstruction Instruction =
303 MCCFIInstruction::createDefCfaOffset(Label, Offset);
304 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
305 CurFrame->Instructions.push_back(Instruction);
308 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
309 MCSymbol *Label = EmitCFICommon();
310 MCCFIInstruction Instruction =
311 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
312 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
313 CurFrame->Instructions.push_back(Instruction);
316 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
317 MCSymbol *Label = EmitCFICommon();
318 MCCFIInstruction Instruction =
319 MCCFIInstruction::createDefCfaRegister(Label, Register);
320 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
321 CurFrame->Instructions.push_back(Instruction);
324 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
325 MCSymbol *Label = EmitCFICommon();
326 MCCFIInstruction Instruction =
327 MCCFIInstruction::createOffset(Label, Register, Offset);
328 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
329 CurFrame->Instructions.push_back(Instruction);
332 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
333 MCSymbol *Label = EmitCFICommon();
334 MCCFIInstruction Instruction =
335 MCCFIInstruction::createRelOffset(Label, Register, Offset);
336 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
337 CurFrame->Instructions.push_back(Instruction);
340 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
343 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
344 CurFrame->Personality = Sym;
345 CurFrame->PersonalityEncoding = Encoding;
348 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
350 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
351 CurFrame->Lsda = Sym;
352 CurFrame->LsdaEncoding = Encoding;
355 void MCStreamer::EmitCFIRememberState() {
356 MCSymbol *Label = EmitCFICommon();
357 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
358 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
359 CurFrame->Instructions.push_back(Instruction);
362 void MCStreamer::EmitCFIRestoreState() {
363 // FIXME: Error if there is no matching cfi_remember_state.
364 MCSymbol *Label = EmitCFICommon();
365 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
366 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
367 CurFrame->Instructions.push_back(Instruction);
370 void MCStreamer::EmitCFISameValue(int64_t Register) {
371 MCSymbol *Label = EmitCFICommon();
372 MCCFIInstruction Instruction =
373 MCCFIInstruction::createSameValue(Label, Register);
374 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
375 CurFrame->Instructions.push_back(Instruction);
378 void MCStreamer::EmitCFIRestore(int64_t Register) {
379 MCSymbol *Label = EmitCFICommon();
380 MCCFIInstruction Instruction =
381 MCCFIInstruction::createRestore(Label, Register);
382 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
383 CurFrame->Instructions.push_back(Instruction);
386 void MCStreamer::EmitCFIEscape(StringRef Values) {
387 MCSymbol *Label = EmitCFICommon();
388 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
389 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
390 CurFrame->Instructions.push_back(Instruction);
393 void MCStreamer::EmitCFISignalFrame() {
395 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
396 CurFrame->IsSignalFrame = true;
399 void MCStreamer::EmitCFIUndefined(int64_t Register) {
400 MCSymbol *Label = EmitCFICommon();
401 MCCFIInstruction Instruction =
402 MCCFIInstruction::createUndefined(Label, Register);
403 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
404 CurFrame->Instructions.push_back(Instruction);
407 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
408 MCSymbol *Label = EmitCFICommon();
409 MCCFIInstruction Instruction =
410 MCCFIInstruction::createRegister(Label, Register1, Register2);
411 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
412 CurFrame->Instructions.push_back(Instruction);
415 void MCStreamer::EmitCFIWindowSave() {
416 MCSymbol *Label = EmitCFICommon();
417 MCCFIInstruction Instruction =
418 MCCFIInstruction::createWindowSave(Label);
419 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
420 CurFrame->Instructions.push_back(Instruction);
423 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
424 W64UnwindInfos.push_back(Frame);
425 CurrentW64UnwindInfo = W64UnwindInfos.back();
428 void MCStreamer::EnsureValidW64UnwindInfo() {
429 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
430 if (!CurFrame || CurFrame->End)
431 report_fatal_error("No open Win64 EH frame function!");
434 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
435 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
436 if (CurFrame && !CurFrame->End)
437 report_fatal_error("Starting a function before ending the previous one!");
438 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
439 Frame->Begin = getContext().CreateTempSymbol();
440 Frame->Function = Symbol;
441 EmitLabel(Frame->Begin);
442 setCurrentW64UnwindInfo(Frame);
445 void MCStreamer::EmitWin64EHEndProc() {
446 EnsureValidW64UnwindInfo();
447 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
448 if (CurFrame->ChainedParent)
449 report_fatal_error("Not all chained regions terminated!");
450 CurFrame->End = getContext().CreateTempSymbol();
451 EmitLabel(CurFrame->End);
454 void MCStreamer::EmitWin64EHStartChained() {
455 EnsureValidW64UnwindInfo();
456 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
457 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
458 Frame->Begin = getContext().CreateTempSymbol();
459 Frame->Function = CurFrame->Function;
460 Frame->ChainedParent = CurFrame;
461 EmitLabel(Frame->Begin);
462 setCurrentW64UnwindInfo(Frame);
465 void MCStreamer::EmitWin64EHEndChained() {
466 EnsureValidW64UnwindInfo();
467 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
468 if (!CurFrame->ChainedParent)
469 report_fatal_error("End of a chained region outside a chained region!");
470 CurFrame->End = getContext().CreateTempSymbol();
471 EmitLabel(CurFrame->End);
472 CurrentW64UnwindInfo = CurFrame->ChainedParent;
475 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
477 EnsureValidW64UnwindInfo();
478 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
479 if (CurFrame->ChainedParent)
480 report_fatal_error("Chained unwind areas can't have handlers!");
481 CurFrame->ExceptionHandler = Sym;
482 if (!Except && !Unwind)
483 report_fatal_error("Don't know what kind of handler this is!");
485 CurFrame->HandlesUnwind = true;
487 CurFrame->HandlesExceptions = true;
490 void MCStreamer::EmitWin64EHHandlerData() {
491 EnsureValidW64UnwindInfo();
492 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
493 if (CurFrame->ChainedParent)
494 report_fatal_error("Chained unwind areas can't have handlers!");
497 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
498 EnsureValidW64UnwindInfo();
499 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
500 MCSymbol *Label = getContext().CreateTempSymbol();
501 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
503 CurFrame->Instructions.push_back(Inst);
506 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
507 EnsureValidW64UnwindInfo();
508 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
509 if (CurFrame->LastFrameInst >= 0)
510 report_fatal_error("Frame register and offset already specified!");
512 report_fatal_error("Misaligned frame pointer offset!");
513 MCSymbol *Label = getContext().CreateTempSymbol();
514 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
516 CurFrame->LastFrameInst = CurFrame->Instructions.size();
517 CurFrame->Instructions.push_back(Inst);
520 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
521 EnsureValidW64UnwindInfo();
523 report_fatal_error("Misaligned stack allocation!");
524 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
525 MCSymbol *Label = getContext().CreateTempSymbol();
526 MCWin64EHInstruction Inst(Label, Size);
528 CurFrame->Instructions.push_back(Inst);
531 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
532 EnsureValidW64UnwindInfo();
534 report_fatal_error("Misaligned saved register offset!");
535 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
536 MCSymbol *Label = getContext().CreateTempSymbol();
537 MCWin64EHInstruction Inst(
538 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
539 Label, Register, Offset);
541 CurFrame->Instructions.push_back(Inst);
544 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
545 EnsureValidW64UnwindInfo();
547 report_fatal_error("Misaligned saved vector register offset!");
548 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
549 MCSymbol *Label = getContext().CreateTempSymbol();
550 MCWin64EHInstruction Inst(
551 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
552 Label, Register, Offset);
554 CurFrame->Instructions.push_back(Inst);
557 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
558 EnsureValidW64UnwindInfo();
559 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
560 if (CurFrame->Instructions.size() > 0)
561 report_fatal_error("If present, PushMachFrame must be the first UOP");
562 MCSymbol *Label = getContext().CreateTempSymbol();
563 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
565 CurFrame->Instructions.push_back(Inst);
568 void MCStreamer::EmitWin64EHEndProlog() {
569 EnsureValidW64UnwindInfo();
570 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
571 CurFrame->PrologEnd = getContext().CreateTempSymbol();
572 EmitLabel(CurFrame->PrologEnd);
575 void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
576 llvm_unreachable("This file format doesn't support this directive");
579 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
580 llvm_unreachable("This file format doesn't support this directive");
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::EmitRawTextImpl(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;
594 EmitRawTextImpl(T.toStringRef(Str));
597 void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
598 if (!getNumFrameInfos())
602 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
605 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false);
608 void MCStreamer::EmitW64Tables() {
609 if (!getNumW64UnwindInfos())
612 MCWin64EHUnwindEmitter::Emit(*this);
615 void MCStreamer::Finish() {
616 if (!FrameInfos.empty() && !FrameInfos.back().End)
617 report_fatal_error("Unfinished frame!");
622 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
623 report_fatal_error("Not supported!");
624 return *(static_cast<MCSymbolData*>(0));