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/MCAsmInfo.h"
11 #include "llvm/MC/MCContext.h"
12 #include "llvm/MC/MCStreamer.h"
13 #include "llvm/MC/MCExpr.h"
14 #include "llvm/MC/MCObjectWriter.h"
15 #include "llvm/MC/MCSymbol.h"
16 #include "llvm/Support/ErrorHandling.h"
17 #include "llvm/Support/raw_ostream.h"
18 #include "llvm/ADT/SmallString.h"
19 #include "llvm/ADT/Twine.h"
23 MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), EmitEHFrame(true),
24 EmitDebugFrame(false),
25 CurrentW64UnwindInfo(0),
27 UniqueCodeBeginSuffix(0),
28 UniqueDataBeginSuffix(0) {
29 const MCSection *section = NULL;
30 SectionStack.push_back(std::make_pair(section, section));
33 MCStreamer::~MCStreamer() {
34 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
35 delete W64UnwindInfos[i];
38 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
41 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
43 MCSymbolRefExpr::Create(A, Variant, Context);
45 MCSymbolRefExpr::Create(B, Variant, Context);
46 const MCExpr *AddrDelta =
47 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
51 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
52 if (Context.getAsmInfo().hasAggressiveSymbolFolding() ||
53 isa<MCSymbolRefExpr>(Expr))
56 MCSymbol *ABS = Context.CreateTempSymbol();
57 EmitAssignment(ABS, Expr);
58 return MCSymbolRefExpr::Create(ABS, Context);
61 raw_ostream &MCStreamer::GetCommentOS() {
62 // By default, discard comments.
66 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
67 const MCSymbol *Label, int PointerSize) {
68 // emit the sequence to set the address
69 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
70 EmitULEB128IntValue(PointerSize + 1);
71 EmitIntValue(dwarf::DW_LNE_set_address, 1);
72 EmitSymbolValue(Label, PointerSize);
74 // emit the sequence for the LineDelta (from 1) and a zero address delta.
75 MCDwarfLineAddr::Emit(this, LineDelta, 0);
78 /// EmitIntValue - Special case of EmitValue that avoids the client having to
79 /// pass in a MCExpr for constant integers.
80 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size,
82 assert(Size <= 8 && "Invalid size");
83 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
86 const bool isLittleEndian = Context.getAsmInfo().isLittleEndian();
87 for (unsigned i = 0; i != Size; ++i) {
88 unsigned index = isLittleEndian ? i : (Size - i - 1);
89 buf[i] = uint8_t(Value >> (index * 8));
91 EmitBytes(StringRef(buf, Size), AddrSpace);
94 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
95 /// client having to pass in a MCExpr for constant integers.
96 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace,
99 raw_svector_ostream OSE(Tmp);
100 MCObjectWriter::EncodeULEB128(Value, OSE, Padding);
101 EmitBytes(OSE.str(), AddrSpace);
104 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
105 /// client having to pass in a MCExpr for constant integers.
106 void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) {
108 raw_svector_ostream OSE(Tmp);
109 MCObjectWriter::EncodeSLEB128(Value, OSE);
110 EmitBytes(OSE.str(), AddrSpace);
113 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
114 unsigned AddrSpace) {
115 const MCExpr *ABS = ForceExpAbs(Value);
116 EmitValue(ABS, Size, AddrSpace);
120 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
121 unsigned AddrSpace) {
122 EmitValueImpl(Value, Size, AddrSpace);
125 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
126 unsigned AddrSpace) {
127 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size,
131 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
132 report_fatal_error("unsupported directive in streamer");
135 /// EmitFill - Emit NumBytes bytes worth of the value specified by
136 /// FillValue. This implements directives such as '.space'.
137 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
138 unsigned AddrSpace) {
139 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
140 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
141 EmitValue(E, 1, AddrSpace);
144 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
146 StringRef Filename) {
147 return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0;
150 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
151 unsigned Column, unsigned Flags,
153 unsigned Discriminator,
154 StringRef FileName) {
155 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
159 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
160 if (FrameInfos.empty())
162 return &FrameInfos.back();
165 void MCStreamer::EnsureValidFrame() {
166 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
167 if (!CurFrame || CurFrame->End)
168 report_fatal_error("No open frame");
171 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
172 MCSymbol *EHSymbol) {
175 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
176 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
177 assert(getCurrentSection() && "Cannot emit before setting section!");
178 Symbol->setSection(*getCurrentSection());
182 void MCStreamer::EmitDataRegion() {
183 if (RegionIndicator == Data) return;
185 MCContext &Context = getContext();
186 const MCAsmInfo &MAI = Context.getAsmInfo();
187 if (!MAI.getSupportsDataRegions()) return;
189 // Generate a unique symbol name.
190 MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getDataBeginLabelName() +
191 Twine(UniqueDataBeginSuffix++));
194 RegionIndicator = Data;
197 void MCStreamer::EmitCodeRegion() {
198 if (RegionIndicator == Code) return;
200 MCContext &Context = getContext();
201 const MCAsmInfo &MAI = Context.getAsmInfo();
202 if (!MAI.getSupportsDataRegions()) return;
204 // Generate a unique symbol name.
205 MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getCodeBeginLabelName() +
206 Twine(UniqueCodeBeginSuffix++));
209 RegionIndicator = Code;
212 void MCStreamer::EmitJumpTable8Region() {
213 if (RegionIndicator == JumpTable8) return;
215 MCContext &Context = getContext();
216 const MCAsmInfo &MAI = Context.getAsmInfo();
217 if (!MAI.getSupportsDataRegions()) return;
219 // Generate a unique symbol name.
221 Context.GetOrCreateSymbol(MAI.getJumpTable8BeginLabelName() +
222 Twine(UniqueDataBeginSuffix++));
225 RegionIndicator = JumpTable8;
228 void MCStreamer::EmitJumpTable16Region() {
229 if (RegionIndicator == JumpTable16) return;
231 MCContext &Context = getContext();
232 const MCAsmInfo &MAI = Context.getAsmInfo();
233 if (!MAI.getSupportsDataRegions()) return;
235 // Generate a unique symbol name.
237 Context.GetOrCreateSymbol(MAI.getJumpTable16BeginLabelName() +
238 Twine(UniqueDataBeginSuffix++));
241 RegionIndicator = JumpTable16;
245 void MCStreamer::EmitJumpTable32Region() {
246 if (RegionIndicator == JumpTable32) return;
248 MCContext &Context = getContext();
249 const MCAsmInfo &MAI = Context.getAsmInfo();
250 if (!MAI.getSupportsDataRegions()) return;
252 // Generate a unique symbol name.
254 Context.GetOrCreateSymbol(MAI.getJumpTable32BeginLabelName() +
255 Twine(UniqueDataBeginSuffix++));
258 RegionIndicator = JumpTable32;
261 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
263 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
264 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
267 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
270 EmitDebugFrame = Debug;
273 void MCStreamer::EmitCFIStartProc() {
274 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
275 if (CurFrame && !CurFrame->End)
276 report_fatal_error("Starting a frame before finishing the previous one!");
278 MCDwarfFrameInfo Frame;
279 EmitCFIStartProcImpl(Frame);
281 FrameInfos.push_back(Frame);
282 RegionIndicator = Code;
285 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
288 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
289 Frame.Function = LastSymbol;
290 // If the function is externally visible, we need to create a local
291 // symbol to avoid relocations.
292 StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
293 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
294 Frame.Begin = LastSymbol;
296 Frame.Begin = getContext().CreateTempSymbol();
297 EmitLabel(Frame.Begin);
301 void MCStreamer::EmitCFIEndProc() {
303 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
304 CurFrame->End = getContext().CreateTempSymbol();
305 EmitLabel(CurFrame->End);
308 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
310 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
311 MCSymbol *Label = getContext().CreateTempSymbol();
313 MachineLocation Dest(MachineLocation::VirtualFP);
314 MachineLocation Source(Register, -Offset);
315 MCCFIInstruction Instruction(Label, Dest, Source);
316 CurFrame->Instructions.push_back(Instruction);
319 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
321 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
322 MCSymbol *Label = getContext().CreateTempSymbol();
324 MachineLocation Dest(MachineLocation::VirtualFP);
325 MachineLocation Source(MachineLocation::VirtualFP, -Offset);
326 MCCFIInstruction Instruction(Label, Dest, Source);
327 CurFrame->Instructions.push_back(Instruction);
330 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
332 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
333 MCSymbol *Label = getContext().CreateTempSymbol();
335 MachineLocation Dest(MachineLocation::VirtualFP);
336 MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
337 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
338 CurFrame->Instructions.push_back(Instruction);
341 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
343 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
344 MCSymbol *Label = getContext().CreateTempSymbol();
346 MachineLocation Dest(Register);
347 MachineLocation Source(MachineLocation::VirtualFP);
348 MCCFIInstruction Instruction(Label, Dest, Source);
349 CurFrame->Instructions.push_back(Instruction);
352 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
354 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
355 MCSymbol *Label = getContext().CreateTempSymbol();
357 MachineLocation Dest(Register, Offset);
358 MachineLocation Source(Register, Offset);
359 MCCFIInstruction Instruction(Label, Dest, Source);
360 CurFrame->Instructions.push_back(Instruction);
363 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
365 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
366 MCSymbol *Label = getContext().CreateTempSymbol();
368 MachineLocation Dest(Register, Offset);
369 MachineLocation Source(Register, Offset);
370 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
371 CurFrame->Instructions.push_back(Instruction);
374 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
377 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
378 CurFrame->Personality = Sym;
379 CurFrame->PersonalityEncoding = Encoding;
382 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
384 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
385 CurFrame->Lsda = Sym;
386 CurFrame->LsdaEncoding = Encoding;
389 void MCStreamer::EmitCFIRememberState() {
391 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
392 MCSymbol *Label = getContext().CreateTempSymbol();
394 MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label);
395 CurFrame->Instructions.push_back(Instruction);
398 void MCStreamer::EmitCFIRestoreState() {
399 // FIXME: Error if there is no matching cfi_remember_state.
401 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
402 MCSymbol *Label = getContext().CreateTempSymbol();
404 MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label);
405 CurFrame->Instructions.push_back(Instruction);
408 void MCStreamer::EmitCFISameValue(int64_t Register) {
410 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
411 MCSymbol *Label = getContext().CreateTempSymbol();
413 MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register);
414 CurFrame->Instructions.push_back(Instruction);
417 void MCStreamer::EmitCFIRestore(int64_t Register) {
419 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
420 MCSymbol *Label = getContext().CreateTempSymbol();
422 MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register);
423 CurFrame->Instructions.push_back(Instruction);
426 void MCStreamer::EmitCFIEscape(StringRef Values) {
428 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
429 MCSymbol *Label = getContext().CreateTempSymbol();
431 MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values);
432 CurFrame->Instructions.push_back(Instruction);
435 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
436 W64UnwindInfos.push_back(Frame);
437 CurrentW64UnwindInfo = W64UnwindInfos.back();
440 void MCStreamer::EnsureValidW64UnwindInfo() {
441 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
442 if (!CurFrame || CurFrame->End)
443 report_fatal_error("No open Win64 EH frame function!");
446 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
447 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
448 if (CurFrame && !CurFrame->End)
449 report_fatal_error("Starting a function before ending the previous one!");
450 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
451 Frame->Begin = getContext().CreateTempSymbol();
452 Frame->Function = Symbol;
453 EmitLabel(Frame->Begin);
454 setCurrentW64UnwindInfo(Frame);
457 void MCStreamer::EmitWin64EHEndProc() {
458 EnsureValidW64UnwindInfo();
459 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
460 if (CurFrame->ChainedParent)
461 report_fatal_error("Not all chained regions terminated!");
462 CurFrame->End = getContext().CreateTempSymbol();
463 EmitLabel(CurFrame->End);
466 void MCStreamer::EmitWin64EHStartChained() {
467 EnsureValidW64UnwindInfo();
468 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
469 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
470 Frame->Begin = getContext().CreateTempSymbol();
471 Frame->Function = CurFrame->Function;
472 Frame->ChainedParent = CurFrame;
473 EmitLabel(Frame->Begin);
474 setCurrentW64UnwindInfo(Frame);
477 void MCStreamer::EmitWin64EHEndChained() {
478 EnsureValidW64UnwindInfo();
479 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
480 if (!CurFrame->ChainedParent)
481 report_fatal_error("End of a chained region outside a chained region!");
482 CurFrame->End = getContext().CreateTempSymbol();
483 EmitLabel(CurFrame->End);
484 CurrentW64UnwindInfo = CurFrame->ChainedParent;
487 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
489 EnsureValidW64UnwindInfo();
490 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
491 if (CurFrame->ChainedParent)
492 report_fatal_error("Chained unwind areas can't have handlers!");
493 CurFrame->ExceptionHandler = Sym;
494 if (!Except && !Unwind)
495 report_fatal_error("Don't know what kind of handler this is!");
497 CurFrame->HandlesUnwind = true;
499 CurFrame->HandlesExceptions = true;
502 void MCStreamer::EmitWin64EHHandlerData() {
503 EnsureValidW64UnwindInfo();
504 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
505 if (CurFrame->ChainedParent)
506 report_fatal_error("Chained unwind areas can't have handlers!");
509 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
510 EnsureValidW64UnwindInfo();
511 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
512 MCSymbol *Label = getContext().CreateTempSymbol();
513 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
515 CurFrame->Instructions.push_back(Inst);
518 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
519 EnsureValidW64UnwindInfo();
520 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
521 if (CurFrame->LastFrameInst >= 0)
522 report_fatal_error("Frame register and offset already specified!");
524 report_fatal_error("Misaligned frame pointer offset!");
525 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, NULL, Register, Offset);
526 CurFrame->LastFrameInst = CurFrame->Instructions.size();
527 CurFrame->Instructions.push_back(Inst);
530 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
531 EnsureValidW64UnwindInfo();
533 report_fatal_error("Misaligned stack allocation!");
534 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
535 MCSymbol *Label = getContext().CreateTempSymbol();
536 MCWin64EHInstruction Inst(Label, Size);
538 CurFrame->Instructions.push_back(Inst);
541 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
542 EnsureValidW64UnwindInfo();
544 report_fatal_error("Misaligned saved register offset!");
545 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
546 MCSymbol *Label = getContext().CreateTempSymbol();
547 MCWin64EHInstruction Inst(
548 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
549 Label, Register, Offset);
551 CurFrame->Instructions.push_back(Inst);
554 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
555 EnsureValidW64UnwindInfo();
557 report_fatal_error("Misaligned saved vector register offset!");
558 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
559 MCSymbol *Label = getContext().CreateTempSymbol();
560 MCWin64EHInstruction Inst(
561 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
562 Label, Register, Offset);
564 CurFrame->Instructions.push_back(Inst);
567 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
568 EnsureValidW64UnwindInfo();
569 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
570 if (CurFrame->Instructions.size() > 0)
571 report_fatal_error("If present, PushMachFrame must be the first UOP");
572 MCSymbol *Label = getContext().CreateTempSymbol();
573 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
575 CurFrame->Instructions.push_back(Inst);
578 void MCStreamer::EmitWin64EHEndProlog() {
579 EnsureValidW64UnwindInfo();
580 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
581 CurFrame->PrologEnd = getContext().CreateTempSymbol();
582 EmitLabel(CurFrame->PrologEnd);
585 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
586 assert(0 && "This file format doesn't support this directive");
589 void MCStreamer::EmitFnStart() {
590 errs() << "Not implemented yet\n";
594 void MCStreamer::EmitFnEnd() {
595 errs() << "Not implemented yet\n";
599 void MCStreamer::EmitCantUnwind() {
600 errs() << "Not implemented yet\n";
604 void MCStreamer::EmitHandlerData() {
605 errs() << "Not implemented yet\n";
609 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
610 errs() << "Not implemented yet\n";
614 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
615 errs() << "Not implemented yet\n";
619 void MCStreamer::EmitPad(int64_t Offset) {
620 errs() << "Not implemented yet\n";
624 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
625 errs() << "Not implemented yet\n";
629 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
630 /// the specified string in the output .s file. This capability is
631 /// indicated by the hasRawTextSupport() predicate.
632 void MCStreamer::EmitRawText(StringRef String) {
633 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
634 " something must not be fully mc'ized\n";
638 void MCStreamer::EmitRawText(const Twine &T) {
639 SmallString<128> Str;
641 EmitRawText(Str.str());
644 void MCStreamer::EmitFrames(bool usingCFI) {
645 if (!getNumFrameInfos())
649 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
652 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
655 void MCStreamer::EmitW64Tables() {
656 if (!getNumW64UnwindInfos())
659 MCWin64EHUnwindEmitter::Emit(*this);
662 void MCStreamer::Finish() {
663 if (!FrameInfos.empty() && !FrameInfos.back().End)
664 report_fatal_error("Unfinished frame!");