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/MCObjectFileInfo.h"
18 #include "llvm/MC/MCObjectWriter.h"
19 #include "llvm/MC/MCSymbol.h"
20 #include "llvm/Support/ErrorHandling.h"
21 #include "llvm/Support/LEB128.h"
22 #include "llvm/Support/raw_ostream.h"
26 // Pin the vtables to this file.
27 MCTargetStreamer::~MCTargetStreamer() {}
28 void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
30 MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
31 : Context(Ctx), TargetStreamer(TargetStreamer), EmitEHFrame(true),
32 EmitDebugFrame(false), CurrentW64UnwindInfo(0), LastSymbol(0) {
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::InitSections(bool Force) {
204 SwitchSection(getContext().getObjectFileInfo()->getTextSection());
207 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
209 Symbol->setSection(*Section);
211 Symbol->setUndefined();
213 // As we emit symbols into a section, track the order so that they can
214 // be sorted upon later. Zero is reserved to mean 'unemitted'.
215 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
218 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
219 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
220 assert(getCurrentSection().first && "Cannot emit before setting section!");
221 AssignSection(Symbol, getCurrentSection().first);
224 MCTargetStreamer *TS = getTargetStreamer();
226 TS->emitLabel(Symbol);
229 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
230 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
231 assert(getCurrentSection().first && "Cannot emit before setting section!");
232 AssignSection(Symbol, getCurrentSection().first);
236 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
238 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
239 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
242 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
245 EmitDebugFrame = Debug;
248 void MCStreamer::EmitCFIStartProc() {
249 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
250 if (CurFrame && !CurFrame->End)
251 report_fatal_error("Starting a frame before finishing the previous one!");
253 MCDwarfFrameInfo Frame;
254 EmitCFIStartProcImpl(Frame);
256 FrameInfos.push_back(Frame);
259 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
262 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
263 Frame.Function = LastSymbol;
264 // If the function is externally visible, we need to create a local
265 // symbol to avoid relocations.
266 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
267 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
268 Frame.Begin = LastSymbol;
270 Frame.Begin = getContext().CreateTempSymbol();
271 EmitLabel(Frame.Begin);
275 void MCStreamer::EmitCFIEndProc() {
277 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
278 EmitCFIEndProcImpl(*CurFrame);
281 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
284 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
285 Frame.End = getContext().CreateTempSymbol();
286 EmitLabel(Frame.End);
289 MCSymbol *MCStreamer::EmitCFICommon() {
291 MCSymbol *Label = getContext().CreateTempSymbol();
296 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
297 MCSymbol *Label = EmitCFICommon();
298 MCCFIInstruction Instruction =
299 MCCFIInstruction::createDefCfa(Label, Register, Offset);
300 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
301 CurFrame->Instructions.push_back(Instruction);
304 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
305 MCSymbol *Label = EmitCFICommon();
306 MCCFIInstruction Instruction =
307 MCCFIInstruction::createDefCfaOffset(Label, Offset);
308 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
309 CurFrame->Instructions.push_back(Instruction);
312 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
313 MCSymbol *Label = EmitCFICommon();
314 MCCFIInstruction Instruction =
315 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
316 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
317 CurFrame->Instructions.push_back(Instruction);
320 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
321 MCSymbol *Label = EmitCFICommon();
322 MCCFIInstruction Instruction =
323 MCCFIInstruction::createDefCfaRegister(Label, Register);
324 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
325 CurFrame->Instructions.push_back(Instruction);
328 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
329 MCSymbol *Label = EmitCFICommon();
330 MCCFIInstruction Instruction =
331 MCCFIInstruction::createOffset(Label, Register, Offset);
332 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
333 CurFrame->Instructions.push_back(Instruction);
336 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
337 MCSymbol *Label = EmitCFICommon();
338 MCCFIInstruction Instruction =
339 MCCFIInstruction::createRelOffset(Label, Register, Offset);
340 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
341 CurFrame->Instructions.push_back(Instruction);
344 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
347 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
348 CurFrame->Personality = Sym;
349 CurFrame->PersonalityEncoding = Encoding;
352 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
354 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
355 CurFrame->Lsda = Sym;
356 CurFrame->LsdaEncoding = Encoding;
359 void MCStreamer::EmitCFIRememberState() {
360 MCSymbol *Label = EmitCFICommon();
361 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
362 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
363 CurFrame->Instructions.push_back(Instruction);
366 void MCStreamer::EmitCFIRestoreState() {
367 // FIXME: Error if there is no matching cfi_remember_state.
368 MCSymbol *Label = EmitCFICommon();
369 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
370 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
371 CurFrame->Instructions.push_back(Instruction);
374 void MCStreamer::EmitCFISameValue(int64_t Register) {
375 MCSymbol *Label = EmitCFICommon();
376 MCCFIInstruction Instruction =
377 MCCFIInstruction::createSameValue(Label, Register);
378 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
379 CurFrame->Instructions.push_back(Instruction);
382 void MCStreamer::EmitCFIRestore(int64_t Register) {
383 MCSymbol *Label = EmitCFICommon();
384 MCCFIInstruction Instruction =
385 MCCFIInstruction::createRestore(Label, Register);
386 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
387 CurFrame->Instructions.push_back(Instruction);
390 void MCStreamer::EmitCFIEscape(StringRef Values) {
391 MCSymbol *Label = EmitCFICommon();
392 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
393 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
394 CurFrame->Instructions.push_back(Instruction);
397 void MCStreamer::EmitCFISignalFrame() {
399 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
400 CurFrame->IsSignalFrame = true;
403 void MCStreamer::EmitCFIUndefined(int64_t Register) {
404 MCSymbol *Label = EmitCFICommon();
405 MCCFIInstruction Instruction =
406 MCCFIInstruction::createUndefined(Label, Register);
407 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
408 CurFrame->Instructions.push_back(Instruction);
411 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
412 MCSymbol *Label = EmitCFICommon();
413 MCCFIInstruction Instruction =
414 MCCFIInstruction::createRegister(Label, Register1, Register2);
415 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
416 CurFrame->Instructions.push_back(Instruction);
419 void MCStreamer::EmitCFIWindowSave() {
420 MCSymbol *Label = EmitCFICommon();
421 MCCFIInstruction Instruction =
422 MCCFIInstruction::createWindowSave(Label);
423 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
424 CurFrame->Instructions.push_back(Instruction);
427 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
428 W64UnwindInfos.push_back(Frame);
429 CurrentW64UnwindInfo = W64UnwindInfos.back();
432 void MCStreamer::EnsureValidW64UnwindInfo() {
433 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
434 if (!CurFrame || CurFrame->End)
435 report_fatal_error("No open Win64 EH frame function!");
438 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
439 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
440 if (CurFrame && !CurFrame->End)
441 report_fatal_error("Starting a function before ending the previous one!");
442 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
443 Frame->Begin = getContext().CreateTempSymbol();
444 Frame->Function = Symbol;
445 EmitLabel(Frame->Begin);
446 setCurrentW64UnwindInfo(Frame);
449 void MCStreamer::EmitWin64EHEndProc() {
450 EnsureValidW64UnwindInfo();
451 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
452 if (CurFrame->ChainedParent)
453 report_fatal_error("Not all chained regions terminated!");
454 CurFrame->End = getContext().CreateTempSymbol();
455 EmitLabel(CurFrame->End);
458 void MCStreamer::EmitWin64EHStartChained() {
459 EnsureValidW64UnwindInfo();
460 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
461 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
462 Frame->Begin = getContext().CreateTempSymbol();
463 Frame->Function = CurFrame->Function;
464 Frame->ChainedParent = CurFrame;
465 EmitLabel(Frame->Begin);
466 setCurrentW64UnwindInfo(Frame);
469 void MCStreamer::EmitWin64EHEndChained() {
470 EnsureValidW64UnwindInfo();
471 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
472 if (!CurFrame->ChainedParent)
473 report_fatal_error("End of a chained region outside a chained region!");
474 CurFrame->End = getContext().CreateTempSymbol();
475 EmitLabel(CurFrame->End);
476 CurrentW64UnwindInfo = CurFrame->ChainedParent;
479 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
481 EnsureValidW64UnwindInfo();
482 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
483 if (CurFrame->ChainedParent)
484 report_fatal_error("Chained unwind areas can't have handlers!");
485 CurFrame->ExceptionHandler = Sym;
486 if (!Except && !Unwind)
487 report_fatal_error("Don't know what kind of handler this is!");
489 CurFrame->HandlesUnwind = true;
491 CurFrame->HandlesExceptions = true;
494 void MCStreamer::EmitWin64EHHandlerData() {
495 EnsureValidW64UnwindInfo();
496 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
497 if (CurFrame->ChainedParent)
498 report_fatal_error("Chained unwind areas can't have handlers!");
501 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
502 EnsureValidW64UnwindInfo();
503 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
504 MCSymbol *Label = getContext().CreateTempSymbol();
505 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
507 CurFrame->Instructions.push_back(Inst);
510 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
511 EnsureValidW64UnwindInfo();
512 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
513 if (CurFrame->LastFrameInst >= 0)
514 report_fatal_error("Frame register and offset already specified!");
516 report_fatal_error("Misaligned frame pointer offset!");
517 MCSymbol *Label = getContext().CreateTempSymbol();
518 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
520 CurFrame->LastFrameInst = CurFrame->Instructions.size();
521 CurFrame->Instructions.push_back(Inst);
524 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
525 EnsureValidW64UnwindInfo();
527 report_fatal_error("Misaligned stack allocation!");
528 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
529 MCSymbol *Label = getContext().CreateTempSymbol();
530 MCWin64EHInstruction Inst(Label, Size);
532 CurFrame->Instructions.push_back(Inst);
535 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
536 EnsureValidW64UnwindInfo();
538 report_fatal_error("Misaligned saved register offset!");
539 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
540 MCSymbol *Label = getContext().CreateTempSymbol();
541 MCWin64EHInstruction Inst(
542 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
543 Label, Register, Offset);
545 CurFrame->Instructions.push_back(Inst);
548 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
549 EnsureValidW64UnwindInfo();
551 report_fatal_error("Misaligned saved vector register offset!");
552 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
553 MCSymbol *Label = getContext().CreateTempSymbol();
554 MCWin64EHInstruction Inst(
555 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
556 Label, Register, Offset);
558 CurFrame->Instructions.push_back(Inst);
561 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
562 EnsureValidW64UnwindInfo();
563 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
564 if (CurFrame->Instructions.size() > 0)
565 report_fatal_error("If present, PushMachFrame must be the first UOP");
566 MCSymbol *Label = getContext().CreateTempSymbol();
567 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
569 CurFrame->Instructions.push_back(Inst);
572 void MCStreamer::EmitWin64EHEndProlog() {
573 EnsureValidW64UnwindInfo();
574 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
575 CurFrame->PrologEnd = getContext().CreateTempSymbol();
576 EmitLabel(CurFrame->PrologEnd);
579 void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
580 llvm_unreachable("This file format doesn't support this directive");
583 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
584 llvm_unreachable("This file format doesn't support this directive");
587 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
588 /// the specified string in the output .s file. This capability is
589 /// indicated by the hasRawTextSupport() predicate.
590 void MCStreamer::EmitRawTextImpl(StringRef String) {
591 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
592 " something must not be fully mc'ized\n";
596 void MCStreamer::EmitRawText(const Twine &T) {
597 SmallString<128> Str;
598 EmitRawTextImpl(T.toStringRef(Str));
601 void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
602 if (!getNumFrameInfos())
606 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
609 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false);
612 void MCStreamer::EmitW64Tables() {
613 if (!getNumW64UnwindInfos())
616 MCWin64EHUnwindEmitter::Emit(*this);
619 void MCStreamer::Finish() {
620 if (!FrameInfos.empty() && !FrameInfos.back().End)
621 report_fatal_error("Unfinished frame!");
626 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
627 report_fatal_error("Not supported!");
628 return *(static_cast<MCSymbolData*>(0));