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) {}
28 void ARMTargetStreamer::anchor() {}
30 MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
31 : Context(Ctx), TargetStreamer(TargetStreamer), EmitEHFrame(true),
32 EmitDebugFrame(false), CurrentW64UnwindInfo(0), LastSymbol(0),
33 AutoInitSections(false) {
34 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
36 TargetStreamer->setStreamer(this);
39 MCStreamer::~MCStreamer() {
40 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
41 delete W64UnwindInfos[i];
44 void MCStreamer::reset() {
45 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
46 delete W64UnwindInfos[i];
47 W64UnwindInfos.clear();
49 EmitDebugFrame = false;
50 CurrentW64UnwindInfo = 0;
53 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
56 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
59 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
61 MCSymbolRefExpr::Create(A, Variant, Context);
63 MCSymbolRefExpr::Create(B, Variant, Context);
64 const MCExpr *AddrDelta =
65 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
69 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
70 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
71 isa<MCSymbolRefExpr>(Expr))
74 MCSymbol *ABS = Context.CreateTempSymbol();
75 EmitAssignment(ABS, Expr);
76 return MCSymbolRefExpr::Create(ABS, Context);
79 raw_ostream &MCStreamer::GetCommentOS() {
80 // By default, discard comments.
84 void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
86 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
87 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
88 E = FrameInfos.end(); I != E; ++I)
89 I->CompactUnwindEncoding =
90 (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
93 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
94 const MCSymbol *Label, int PointerSize) {
95 // emit the sequence to set the address
96 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
97 EmitULEB128IntValue(PointerSize + 1);
98 EmitIntValue(dwarf::DW_LNE_set_address, 1);
99 EmitSymbolValue(Label, PointerSize);
101 // emit the sequence for the LineDelta (from 1) and a zero address delta.
102 MCDwarfLineAddr::Emit(this, LineDelta, 0);
105 /// EmitIntValue - Special case of EmitValue that avoids the client having to
106 /// pass in a MCExpr for constant integers.
107 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
108 assert(Size <= 8 && "Invalid size");
109 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
112 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
113 for (unsigned i = 0; i != Size; ++i) {
114 unsigned index = isLittleEndian ? i : (Size - i - 1);
115 buf[i] = uint8_t(Value >> (index * 8));
117 EmitBytes(StringRef(buf, Size));
120 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
121 /// client having to pass in a MCExpr for constant integers.
122 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
123 SmallString<128> Tmp;
124 raw_svector_ostream OSE(Tmp);
125 encodeULEB128(Value, OSE, Padding);
126 EmitBytes(OSE.str());
129 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
130 /// client having to pass in a MCExpr for constant integers.
131 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
132 SmallString<128> Tmp;
133 raw_svector_ostream OSE(Tmp);
134 encodeSLEB128(Value, OSE);
135 EmitBytes(OSE.str());
138 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
139 const MCExpr *ABS = ForceExpAbs(Value);
140 EmitValue(ABS, Size);
144 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
145 EmitValueImpl(Value, Size);
148 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
149 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
152 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
153 report_fatal_error("unsupported directive in streamer");
156 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
157 report_fatal_error("unsupported directive in streamer");
160 /// EmitFill - Emit NumBytes bytes worth of the value specified by
161 /// FillValue. This implements directives such as '.space'.
162 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
163 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
164 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
168 /// The implementation in this class just redirects to EmitFill.
169 void MCStreamer::EmitZeros(uint64_t NumBytes) {
170 EmitFill(NumBytes, 0);
173 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
175 StringRef Filename, unsigned CUID) {
176 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
179 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
180 unsigned Column, unsigned Flags,
182 unsigned Discriminator,
183 StringRef FileName) {
184 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
188 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
189 if (FrameInfos.empty())
191 return &FrameInfos.back();
194 void MCStreamer::EnsureValidFrame() {
195 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
196 if (!CurFrame || CurFrame->End)
197 report_fatal_error("No open frame");
200 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
201 MCSymbol *EHSymbol) {
204 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
206 Symbol->setSection(*Section);
208 Symbol->setUndefined();
210 // As we emit symbols into a section, track the order so that they can
211 // be sorted upon later. Zero is reserved to mean 'unemitted'.
212 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
215 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
216 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
217 assert(getCurrentSection().first && "Cannot emit before setting section!");
218 AssignSection(Symbol, getCurrentSection().first);
221 MCTargetStreamer *TS = getTargetStreamer();
223 TS->emitLabel(Symbol);
226 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
227 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
228 assert(getCurrentSection().first && "Cannot emit before setting section!");
229 AssignSection(Symbol, getCurrentSection().first);
233 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
235 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
236 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
239 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
242 EmitDebugFrame = Debug;
245 void MCStreamer::EmitCFIStartProc() {
246 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
247 if (CurFrame && !CurFrame->End)
248 report_fatal_error("Starting a frame before finishing the previous one!");
250 MCDwarfFrameInfo Frame;
251 EmitCFIStartProcImpl(Frame);
253 FrameInfos.push_back(Frame);
256 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
259 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
260 Frame.Function = LastSymbol;
261 // If the function is externally visible, we need to create a local
262 // symbol to avoid relocations.
263 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
264 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
265 Frame.Begin = LastSymbol;
267 Frame.Begin = getContext().CreateTempSymbol();
268 EmitLabel(Frame.Begin);
272 void MCStreamer::EmitCFIEndProc() {
274 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
275 EmitCFIEndProcImpl(*CurFrame);
278 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
281 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
282 Frame.End = getContext().CreateTempSymbol();
283 EmitLabel(Frame.End);
286 MCSymbol *MCStreamer::EmitCFICommon() {
288 MCSymbol *Label = getContext().CreateTempSymbol();
293 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
294 MCSymbol *Label = EmitCFICommon();
295 MCCFIInstruction Instruction =
296 MCCFIInstruction::createDefCfa(Label, Register, Offset);
297 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
298 CurFrame->Instructions.push_back(Instruction);
301 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
302 MCSymbol *Label = EmitCFICommon();
303 MCCFIInstruction Instruction =
304 MCCFIInstruction::createDefCfaOffset(Label, Offset);
305 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
306 CurFrame->Instructions.push_back(Instruction);
309 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
310 MCSymbol *Label = EmitCFICommon();
311 MCCFIInstruction Instruction =
312 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
313 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
314 CurFrame->Instructions.push_back(Instruction);
317 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
318 MCSymbol *Label = EmitCFICommon();
319 MCCFIInstruction Instruction =
320 MCCFIInstruction::createDefCfaRegister(Label, Register);
321 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
322 CurFrame->Instructions.push_back(Instruction);
325 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
326 MCSymbol *Label = EmitCFICommon();
327 MCCFIInstruction Instruction =
328 MCCFIInstruction::createOffset(Label, Register, Offset);
329 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
330 CurFrame->Instructions.push_back(Instruction);
333 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
334 MCSymbol *Label = EmitCFICommon();
335 MCCFIInstruction Instruction =
336 MCCFIInstruction::createRelOffset(Label, Register, Offset);
337 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
338 CurFrame->Instructions.push_back(Instruction);
341 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
344 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
345 CurFrame->Personality = Sym;
346 CurFrame->PersonalityEncoding = Encoding;
349 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
351 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
352 CurFrame->Lsda = Sym;
353 CurFrame->LsdaEncoding = Encoding;
356 void MCStreamer::EmitCFIRememberState() {
357 MCSymbol *Label = EmitCFICommon();
358 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
359 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
360 CurFrame->Instructions.push_back(Instruction);
363 void MCStreamer::EmitCFIRestoreState() {
364 // FIXME: Error if there is no matching cfi_remember_state.
365 MCSymbol *Label = EmitCFICommon();
366 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
367 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
368 CurFrame->Instructions.push_back(Instruction);
371 void MCStreamer::EmitCFISameValue(int64_t Register) {
372 MCSymbol *Label = EmitCFICommon();
373 MCCFIInstruction Instruction =
374 MCCFIInstruction::createSameValue(Label, Register);
375 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
376 CurFrame->Instructions.push_back(Instruction);
379 void MCStreamer::EmitCFIRestore(int64_t Register) {
380 MCSymbol *Label = EmitCFICommon();
381 MCCFIInstruction Instruction =
382 MCCFIInstruction::createRestore(Label, Register);
383 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
384 CurFrame->Instructions.push_back(Instruction);
387 void MCStreamer::EmitCFIEscape(StringRef Values) {
388 MCSymbol *Label = EmitCFICommon();
389 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
390 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
391 CurFrame->Instructions.push_back(Instruction);
394 void MCStreamer::EmitCFISignalFrame() {
396 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
397 CurFrame->IsSignalFrame = true;
400 void MCStreamer::EmitCFIUndefined(int64_t Register) {
401 MCSymbol *Label = EmitCFICommon();
402 MCCFIInstruction Instruction =
403 MCCFIInstruction::createUndefined(Label, Register);
404 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
405 CurFrame->Instructions.push_back(Instruction);
408 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
409 MCSymbol *Label = EmitCFICommon();
410 MCCFIInstruction Instruction =
411 MCCFIInstruction::createRegister(Label, Register1, Register2);
412 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
413 CurFrame->Instructions.push_back(Instruction);
416 void MCStreamer::EmitCFIWindowSave() {
417 MCSymbol *Label = EmitCFICommon();
418 MCCFIInstruction Instruction =
419 MCCFIInstruction::createWindowSave(Label);
420 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
421 CurFrame->Instructions.push_back(Instruction);
424 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
425 W64UnwindInfos.push_back(Frame);
426 CurrentW64UnwindInfo = W64UnwindInfos.back();
429 void MCStreamer::EnsureValidW64UnwindInfo() {
430 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
431 if (!CurFrame || CurFrame->End)
432 report_fatal_error("No open Win64 EH frame function!");
435 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
436 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
437 if (CurFrame && !CurFrame->End)
438 report_fatal_error("Starting a function before ending the previous one!");
439 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
440 Frame->Begin = getContext().CreateTempSymbol();
441 Frame->Function = Symbol;
442 EmitLabel(Frame->Begin);
443 setCurrentW64UnwindInfo(Frame);
446 void MCStreamer::EmitWin64EHEndProc() {
447 EnsureValidW64UnwindInfo();
448 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
449 if (CurFrame->ChainedParent)
450 report_fatal_error("Not all chained regions terminated!");
451 CurFrame->End = getContext().CreateTempSymbol();
452 EmitLabel(CurFrame->End);
455 void MCStreamer::EmitWin64EHStartChained() {
456 EnsureValidW64UnwindInfo();
457 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
458 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
459 Frame->Begin = getContext().CreateTempSymbol();
460 Frame->Function = CurFrame->Function;
461 Frame->ChainedParent = CurFrame;
462 EmitLabel(Frame->Begin);
463 setCurrentW64UnwindInfo(Frame);
466 void MCStreamer::EmitWin64EHEndChained() {
467 EnsureValidW64UnwindInfo();
468 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
469 if (!CurFrame->ChainedParent)
470 report_fatal_error("End of a chained region outside a chained region!");
471 CurFrame->End = getContext().CreateTempSymbol();
472 EmitLabel(CurFrame->End);
473 CurrentW64UnwindInfo = CurFrame->ChainedParent;
476 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
478 EnsureValidW64UnwindInfo();
479 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
480 if (CurFrame->ChainedParent)
481 report_fatal_error("Chained unwind areas can't have handlers!");
482 CurFrame->ExceptionHandler = Sym;
483 if (!Except && !Unwind)
484 report_fatal_error("Don't know what kind of handler this is!");
486 CurFrame->HandlesUnwind = true;
488 CurFrame->HandlesExceptions = true;
491 void MCStreamer::EmitWin64EHHandlerData() {
492 EnsureValidW64UnwindInfo();
493 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
494 if (CurFrame->ChainedParent)
495 report_fatal_error("Chained unwind areas can't have handlers!");
498 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
499 EnsureValidW64UnwindInfo();
500 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
501 MCSymbol *Label = getContext().CreateTempSymbol();
502 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
504 CurFrame->Instructions.push_back(Inst);
507 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
508 EnsureValidW64UnwindInfo();
509 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
510 if (CurFrame->LastFrameInst >= 0)
511 report_fatal_error("Frame register and offset already specified!");
513 report_fatal_error("Misaligned frame pointer offset!");
514 MCSymbol *Label = getContext().CreateTempSymbol();
515 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
517 CurFrame->LastFrameInst = CurFrame->Instructions.size();
518 CurFrame->Instructions.push_back(Inst);
521 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
522 EnsureValidW64UnwindInfo();
524 report_fatal_error("Misaligned stack allocation!");
525 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
526 MCSymbol *Label = getContext().CreateTempSymbol();
527 MCWin64EHInstruction Inst(Label, Size);
529 CurFrame->Instructions.push_back(Inst);
532 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
533 EnsureValidW64UnwindInfo();
535 report_fatal_error("Misaligned saved register offset!");
536 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
537 MCSymbol *Label = getContext().CreateTempSymbol();
538 MCWin64EHInstruction Inst(
539 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
540 Label, Register, Offset);
542 CurFrame->Instructions.push_back(Inst);
545 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
546 EnsureValidW64UnwindInfo();
548 report_fatal_error("Misaligned saved vector register offset!");
549 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
550 MCSymbol *Label = getContext().CreateTempSymbol();
551 MCWin64EHInstruction Inst(
552 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
553 Label, Register, Offset);
555 CurFrame->Instructions.push_back(Inst);
558 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
559 EnsureValidW64UnwindInfo();
560 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
561 if (CurFrame->Instructions.size() > 0)
562 report_fatal_error("If present, PushMachFrame must be the first UOP");
563 MCSymbol *Label = getContext().CreateTempSymbol();
564 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
566 CurFrame->Instructions.push_back(Inst);
569 void MCStreamer::EmitWin64EHEndProlog() {
570 EnsureValidW64UnwindInfo();
571 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
572 CurFrame->PrologEnd = getContext().CreateTempSymbol();
573 EmitLabel(CurFrame->PrologEnd);
576 void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
577 llvm_unreachable("This file format doesn't support this directive");
580 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
581 llvm_unreachable("This file format doesn't support this directive");
584 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
585 /// the specified string in the output .s file. This capability is
586 /// indicated by the hasRawTextSupport() predicate.
587 void MCStreamer::EmitRawTextImpl(StringRef String) {
588 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
589 " something must not be fully mc'ized\n";
593 void MCStreamer::EmitRawText(const Twine &T) {
594 SmallString<128> Str;
595 EmitRawTextImpl(T.toStringRef(Str));
598 void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
599 if (!getNumFrameInfos())
603 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
606 MCDwarfFrameEmitter::Emit(*this, MAB, 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));