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() {}
29 MCTargetStreamer::MCTargetStreamer(MCStreamer &S) : Streamer(S) {
30 S.setTargetStreamer(this);
33 void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
35 void MCTargetStreamer::finish() {}
37 MCStreamer::MCStreamer(MCContext &Ctx)
38 : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
39 CurrentW64UnwindInfo(0), LastSymbol(0) {
40 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
43 MCStreamer::~MCStreamer() {
44 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
45 delete W64UnwindInfos[i];
48 void MCStreamer::reset() {
49 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
50 delete W64UnwindInfos[i];
51 W64UnwindInfos.clear();
53 EmitDebugFrame = false;
54 CurrentW64UnwindInfo = 0;
57 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
60 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
63 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
65 MCSymbolRefExpr::Create(A, Variant, Context);
67 MCSymbolRefExpr::Create(B, Variant, Context);
68 const MCExpr *AddrDelta =
69 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
73 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
74 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
75 isa<MCSymbolRefExpr>(Expr))
78 MCSymbol *ABS = Context.CreateTempSymbol();
79 EmitAssignment(ABS, Expr);
80 return MCSymbolRefExpr::Create(ABS, Context);
83 raw_ostream &MCStreamer::GetCommentOS() {
84 // By default, discard comments.
88 void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
90 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
91 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
92 E = FrameInfos.end(); I != E; ++I)
93 I->CompactUnwindEncoding =
94 (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
97 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
98 const MCSymbol *Label, int PointerSize) {
99 // emit the sequence to set the address
100 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
101 EmitULEB128IntValue(PointerSize + 1);
102 EmitIntValue(dwarf::DW_LNE_set_address, 1);
103 EmitSymbolValue(Label, PointerSize);
105 // emit the sequence for the LineDelta (from 1) and a zero address delta.
106 MCDwarfLineAddr::Emit(this, LineDelta, 0);
109 /// EmitIntValue - Special case of EmitValue that avoids the client having to
110 /// pass in a MCExpr for constant integers.
111 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
112 assert(Size <= 8 && "Invalid size");
113 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
116 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
117 for (unsigned i = 0; i != Size; ++i) {
118 unsigned index = isLittleEndian ? i : (Size - i - 1);
119 buf[i] = uint8_t(Value >> (index * 8));
121 EmitBytes(StringRef(buf, Size));
124 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
125 /// client having to pass in a MCExpr for constant integers.
126 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
127 SmallString<128> Tmp;
128 raw_svector_ostream OSE(Tmp);
129 encodeULEB128(Value, OSE, Padding);
130 EmitBytes(OSE.str());
133 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
134 /// client having to pass in a MCExpr for constant integers.
135 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
136 SmallString<128> Tmp;
137 raw_svector_ostream OSE(Tmp);
138 encodeSLEB128(Value, OSE);
139 EmitBytes(OSE.str());
142 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
143 const MCExpr *ABS = ForceExpAbs(Value);
144 EmitValue(ABS, Size);
148 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
149 EmitValueImpl(Value, Size);
152 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
153 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
156 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
157 report_fatal_error("unsupported directive in streamer");
160 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
161 report_fatal_error("unsupported directive in streamer");
164 /// EmitFill - Emit NumBytes bytes worth of the value specified by
165 /// FillValue. This implements directives such as '.space'.
166 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
167 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
168 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
172 /// The implementation in this class just redirects to EmitFill.
173 void MCStreamer::EmitZeros(uint64_t NumBytes) {
174 EmitFill(NumBytes, 0);
177 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
179 StringRef Filename, unsigned CUID) {
180 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
183 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
184 unsigned Column, unsigned Flags,
186 unsigned Discriminator,
187 StringRef FileName) {
188 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
192 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
193 if (FrameInfos.empty())
195 return &FrameInfos.back();
198 void MCStreamer::EnsureValidFrame() {
199 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
200 if (!CurFrame || CurFrame->End)
201 report_fatal_error("No open frame");
204 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
205 MCSymbol *EHSymbol) {
208 void MCStreamer::InitSections(bool Force) {
209 SwitchSection(getContext().getObjectFileInfo()->getTextSection());
212 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
214 Symbol->setSection(*Section);
216 Symbol->setUndefined();
218 // As we emit symbols into a section, track the order so that they can
219 // be sorted upon later. Zero is reserved to mean 'unemitted'.
220 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
223 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
224 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
225 assert(getCurrentSection().first && "Cannot emit before setting section!");
226 AssignSection(Symbol, getCurrentSection().first);
229 MCTargetStreamer *TS = getTargetStreamer();
231 TS->emitLabel(Symbol);
234 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
235 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
236 assert(getCurrentSection().first && "Cannot emit before setting section!");
237 AssignSection(Symbol, getCurrentSection().first);
241 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
243 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
244 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
247 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
250 EmitDebugFrame = Debug;
253 void MCStreamer::EmitCFIStartProc(bool IsSimple) {
254 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
255 if (CurFrame && !CurFrame->End)
256 report_fatal_error("Starting a frame before finishing the previous one!");
258 MCDwarfFrameInfo Frame;
259 Frame.IsSimple = IsSimple;
260 EmitCFIStartProcImpl(Frame);
262 FrameInfos.push_back(Frame);
265 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
268 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
269 Frame.Function = LastSymbol;
270 // If the function is externally visible, we need to create a local
271 // symbol to avoid relocations.
272 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
273 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
274 Frame.Begin = LastSymbol;
276 Frame.Begin = getContext().CreateTempSymbol();
277 EmitLabel(Frame.Begin);
281 void MCStreamer::EmitCFIEndProc() {
283 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
284 EmitCFIEndProcImpl(*CurFrame);
287 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
290 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
291 Frame.End = getContext().CreateTempSymbol();
292 EmitLabel(Frame.End);
295 MCSymbol *MCStreamer::EmitCFICommon() {
297 MCSymbol *Label = getContext().CreateTempSymbol();
302 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
303 MCSymbol *Label = EmitCFICommon();
304 MCCFIInstruction Instruction =
305 MCCFIInstruction::createDefCfa(Label, Register, Offset);
306 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
307 CurFrame->Instructions.push_back(Instruction);
310 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
311 MCSymbol *Label = EmitCFICommon();
312 MCCFIInstruction Instruction =
313 MCCFIInstruction::createDefCfaOffset(Label, Offset);
314 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
315 CurFrame->Instructions.push_back(Instruction);
318 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
319 MCSymbol *Label = EmitCFICommon();
320 MCCFIInstruction Instruction =
321 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
322 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
323 CurFrame->Instructions.push_back(Instruction);
326 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
327 MCSymbol *Label = EmitCFICommon();
328 MCCFIInstruction Instruction =
329 MCCFIInstruction::createDefCfaRegister(Label, Register);
330 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
331 CurFrame->Instructions.push_back(Instruction);
334 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
335 MCSymbol *Label = EmitCFICommon();
336 MCCFIInstruction Instruction =
337 MCCFIInstruction::createOffset(Label, Register, Offset);
338 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
339 CurFrame->Instructions.push_back(Instruction);
342 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
343 MCSymbol *Label = EmitCFICommon();
344 MCCFIInstruction Instruction =
345 MCCFIInstruction::createRelOffset(Label, Register, Offset);
346 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
347 CurFrame->Instructions.push_back(Instruction);
350 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
353 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
354 CurFrame->Personality = Sym;
355 CurFrame->PersonalityEncoding = Encoding;
358 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
360 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
361 CurFrame->Lsda = Sym;
362 CurFrame->LsdaEncoding = Encoding;
365 void MCStreamer::EmitCFIRememberState() {
366 MCSymbol *Label = EmitCFICommon();
367 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
368 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
369 CurFrame->Instructions.push_back(Instruction);
372 void MCStreamer::EmitCFIRestoreState() {
373 // FIXME: Error if there is no matching cfi_remember_state.
374 MCSymbol *Label = EmitCFICommon();
375 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
376 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
377 CurFrame->Instructions.push_back(Instruction);
380 void MCStreamer::EmitCFISameValue(int64_t Register) {
381 MCSymbol *Label = EmitCFICommon();
382 MCCFIInstruction Instruction =
383 MCCFIInstruction::createSameValue(Label, Register);
384 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
385 CurFrame->Instructions.push_back(Instruction);
388 void MCStreamer::EmitCFIRestore(int64_t Register) {
389 MCSymbol *Label = EmitCFICommon();
390 MCCFIInstruction Instruction =
391 MCCFIInstruction::createRestore(Label, Register);
392 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
393 CurFrame->Instructions.push_back(Instruction);
396 void MCStreamer::EmitCFIEscape(StringRef Values) {
397 MCSymbol *Label = EmitCFICommon();
398 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
399 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
400 CurFrame->Instructions.push_back(Instruction);
403 void MCStreamer::EmitCFISignalFrame() {
405 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
406 CurFrame->IsSignalFrame = true;
409 void MCStreamer::EmitCFIUndefined(int64_t Register) {
410 MCSymbol *Label = EmitCFICommon();
411 MCCFIInstruction Instruction =
412 MCCFIInstruction::createUndefined(Label, Register);
413 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
414 CurFrame->Instructions.push_back(Instruction);
417 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
418 MCSymbol *Label = EmitCFICommon();
419 MCCFIInstruction Instruction =
420 MCCFIInstruction::createRegister(Label, Register1, Register2);
421 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
422 CurFrame->Instructions.push_back(Instruction);
425 void MCStreamer::EmitCFIWindowSave() {
426 MCSymbol *Label = EmitCFICommon();
427 MCCFIInstruction Instruction =
428 MCCFIInstruction::createWindowSave(Label);
429 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
430 CurFrame->Instructions.push_back(Instruction);
433 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
434 W64UnwindInfos.push_back(Frame);
435 CurrentW64UnwindInfo = W64UnwindInfos.back();
438 void MCStreamer::EnsureValidW64UnwindInfo() {
439 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
440 if (!CurFrame || CurFrame->End)
441 report_fatal_error("No open Win64 EH frame function!");
444 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
445 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
446 if (CurFrame && !CurFrame->End)
447 report_fatal_error("Starting a function before ending the previous one!");
448 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
449 Frame->Begin = getContext().CreateTempSymbol();
450 Frame->Function = Symbol;
451 EmitLabel(Frame->Begin);
452 setCurrentW64UnwindInfo(Frame);
455 void MCStreamer::EmitWin64EHEndProc() {
456 EnsureValidW64UnwindInfo();
457 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
458 if (CurFrame->ChainedParent)
459 report_fatal_error("Not all chained regions terminated!");
460 CurFrame->End = getContext().CreateTempSymbol();
461 EmitLabel(CurFrame->End);
464 void MCStreamer::EmitWin64EHStartChained() {
465 EnsureValidW64UnwindInfo();
466 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
467 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
468 Frame->Begin = getContext().CreateTempSymbol();
469 Frame->Function = CurFrame->Function;
470 Frame->ChainedParent = CurFrame;
471 EmitLabel(Frame->Begin);
472 setCurrentW64UnwindInfo(Frame);
475 void MCStreamer::EmitWin64EHEndChained() {
476 EnsureValidW64UnwindInfo();
477 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
478 if (!CurFrame->ChainedParent)
479 report_fatal_error("End of a chained region outside a chained region!");
480 CurFrame->End = getContext().CreateTempSymbol();
481 EmitLabel(CurFrame->End);
482 CurrentW64UnwindInfo = CurFrame->ChainedParent;
485 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
487 EnsureValidW64UnwindInfo();
488 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
489 if (CurFrame->ChainedParent)
490 report_fatal_error("Chained unwind areas can't have handlers!");
491 CurFrame->ExceptionHandler = Sym;
492 if (!Except && !Unwind)
493 report_fatal_error("Don't know what kind of handler this is!");
495 CurFrame->HandlesUnwind = true;
497 CurFrame->HandlesExceptions = true;
500 void MCStreamer::EmitWin64EHHandlerData() {
501 EnsureValidW64UnwindInfo();
502 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
503 if (CurFrame->ChainedParent)
504 report_fatal_error("Chained unwind areas can't have handlers!");
507 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
508 EnsureValidW64UnwindInfo();
509 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
510 MCSymbol *Label = getContext().CreateTempSymbol();
511 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
513 CurFrame->Instructions.push_back(Inst);
516 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
517 EnsureValidW64UnwindInfo();
518 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
519 if (CurFrame->LastFrameInst >= 0)
520 report_fatal_error("Frame register and offset already specified!");
522 report_fatal_error("Misaligned frame pointer offset!");
523 MCSymbol *Label = getContext().CreateTempSymbol();
524 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, 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::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
586 llvm_unreachable("This file format doesn't support this directive");
589 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
590 llvm_unreachable("This file format doesn't support this directive");
593 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
594 /// the specified string in the output .s file. This capability is
595 /// indicated by the hasRawTextSupport() predicate.
596 void MCStreamer::EmitRawTextImpl(StringRef String) {
597 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
598 " something must not be fully mc'ized\n";
602 void MCStreamer::EmitRawText(const Twine &T) {
603 SmallString<128> Str;
604 EmitRawTextImpl(T.toStringRef(Str));
607 void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
608 if (!getNumFrameInfos())
612 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
615 MCDwarfFrameEmitter::Emit(*this, MAB, 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!");
629 MCTargetStreamer *TS = getTargetStreamer();
636 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
637 report_fatal_error("Not supported!");
638 return *(static_cast<MCSymbolData*>(0));