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 MCStreamer::MCStreamer(MCContext &Ctx)
26 : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
27 CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
28 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
31 MCStreamer::~MCStreamer() {
32 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
33 delete W64UnwindInfos[i];
36 void MCStreamer::reset() {
37 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
38 delete W64UnwindInfos[i];
39 W64UnwindInfos.clear();
41 EmitDebugFrame = false;
42 CurrentW64UnwindInfo = 0;
45 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
48 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
51 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
53 MCSymbolRefExpr::Create(A, Variant, Context);
55 MCSymbolRefExpr::Create(B, Variant, Context);
56 const MCExpr *AddrDelta =
57 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
61 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
62 if (Context.getAsmInfo()->hasAggressiveSymbolFolding() ||
63 isa<MCSymbolRefExpr>(Expr))
66 MCSymbol *ABS = Context.CreateTempSymbol();
67 EmitAssignment(ABS, Expr);
68 return MCSymbolRefExpr::Create(ABS, Context);
71 raw_ostream &MCStreamer::GetCommentOS() {
72 // By default, discard comments.
76 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
77 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
78 E = FrameInfos.end(); I != E; ++I)
79 I->CompactUnwindEncoding =
80 (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
83 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
84 const MCSymbol *Label, int PointerSize) {
85 // emit the sequence to set the address
86 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
87 EmitULEB128IntValue(PointerSize + 1);
88 EmitIntValue(dwarf::DW_LNE_set_address, 1);
89 EmitSymbolValue(Label, PointerSize);
91 // emit the sequence for the LineDelta (from 1) and a zero address delta.
92 MCDwarfLineAddr::Emit(this, LineDelta, 0);
95 /// EmitIntValue - Special case of EmitValue that avoids the client having to
96 /// pass in a MCExpr for constant integers.
97 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
98 assert(Size <= 8 && "Invalid size");
99 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
102 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
103 for (unsigned i = 0; i != Size; ++i) {
104 unsigned index = isLittleEndian ? i : (Size - i - 1);
105 buf[i] = uint8_t(Value >> (index * 8));
107 EmitBytes(StringRef(buf, Size));
110 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
111 /// client having to pass in a MCExpr for constant integers.
112 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
113 SmallString<128> Tmp;
114 raw_svector_ostream OSE(Tmp);
115 encodeULEB128(Value, OSE, Padding);
116 EmitBytes(OSE.str());
119 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
120 /// client having to pass in a MCExpr for constant integers.
121 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
122 SmallString<128> Tmp;
123 raw_svector_ostream OSE(Tmp);
124 encodeSLEB128(Value, OSE);
125 EmitBytes(OSE.str());
128 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
129 const MCExpr *ABS = ForceExpAbs(Value);
130 EmitValue(ABS, Size);
134 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size) {
135 EmitValueImpl(Value, Size);
138 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
139 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
142 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
143 report_fatal_error("unsupported directive in streamer");
146 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
147 report_fatal_error("unsupported directive in streamer");
150 /// EmitFill - Emit NumBytes bytes worth of the value specified by
151 /// FillValue. This implements directives such as '.space'.
152 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
153 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
154 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
158 /// The implementation in this class just redirects to EmitFill.
159 void MCStreamer::EmitZeros(uint64_t NumBytes) {
160 EmitFill(NumBytes, 0);
163 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
165 StringRef Filename, unsigned CUID) {
166 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
169 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
170 unsigned Column, unsigned Flags,
172 unsigned Discriminator,
173 StringRef FileName) {
174 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
178 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
179 if (FrameInfos.empty())
181 return &FrameInfos.back();
184 void MCStreamer::EnsureValidFrame() {
185 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
186 if (!CurFrame || CurFrame->End)
187 report_fatal_error("No open frame");
190 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
191 MCSymbol *EHSymbol) {
194 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
196 Symbol->setSection(*Section);
198 Symbol->setUndefined();
200 // As we emit symbols into a section, track the order so that they can
201 // be sorted upon later. Zero is reserved to mean 'unemitted'.
202 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
205 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
206 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
207 assert(getCurrentSection().first && "Cannot emit before setting section!");
208 AssignSection(Symbol, getCurrentSection().first);
212 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
213 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
214 assert(getCurrentSection().first && "Cannot emit before setting section!");
215 AssignSection(Symbol, getCurrentSection().first);
219 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
221 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
222 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
225 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
228 EmitDebugFrame = Debug;
231 void MCStreamer::EmitCFIStartProc() {
232 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
233 if (CurFrame && !CurFrame->End)
234 report_fatal_error("Starting a frame before finishing the previous one!");
236 MCDwarfFrameInfo Frame;
237 EmitCFIStartProcImpl(Frame);
239 FrameInfos.push_back(Frame);
242 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
245 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
246 Frame.Function = LastSymbol;
247 // If the function is externally visible, we need to create a local
248 // symbol to avoid relocations.
249 StringRef Prefix = getContext().getAsmInfo()->getPrivateGlobalPrefix();
250 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
251 Frame.Begin = LastSymbol;
253 Frame.Begin = getContext().CreateTempSymbol();
254 EmitLabel(Frame.Begin);
258 void MCStreamer::EmitCFIEndProc() {
260 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
261 EmitCFIEndProcImpl(*CurFrame);
264 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
267 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
268 Frame.End = getContext().CreateTempSymbol();
269 EmitLabel(Frame.End);
272 MCSymbol *MCStreamer::EmitCFICommon() {
274 MCSymbol *Label = getContext().CreateTempSymbol();
279 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
280 MCSymbol *Label = EmitCFICommon();
281 MCCFIInstruction Instruction =
282 MCCFIInstruction::createDefCfa(Label, Register, Offset);
283 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
284 CurFrame->Instructions.push_back(Instruction);
287 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
288 MCSymbol *Label = EmitCFICommon();
289 MCCFIInstruction Instruction =
290 MCCFIInstruction::createDefCfaOffset(Label, Offset);
291 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
292 CurFrame->Instructions.push_back(Instruction);
295 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
296 MCSymbol *Label = EmitCFICommon();
297 MCCFIInstruction Instruction =
298 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
299 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
300 CurFrame->Instructions.push_back(Instruction);
303 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
304 MCSymbol *Label = EmitCFICommon();
305 MCCFIInstruction Instruction =
306 MCCFIInstruction::createDefCfaRegister(Label, Register);
307 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
308 CurFrame->Instructions.push_back(Instruction);
311 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
312 MCSymbol *Label = EmitCFICommon();
313 MCCFIInstruction Instruction =
314 MCCFIInstruction::createOffset(Label, Register, Offset);
315 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
316 CurFrame->Instructions.push_back(Instruction);
319 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
320 MCSymbol *Label = EmitCFICommon();
321 MCCFIInstruction Instruction =
322 MCCFIInstruction::createRelOffset(Label, Register, Offset);
323 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
324 CurFrame->Instructions.push_back(Instruction);
327 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
330 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
331 CurFrame->Personality = Sym;
332 CurFrame->PersonalityEncoding = Encoding;
335 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
337 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
338 CurFrame->Lsda = Sym;
339 CurFrame->LsdaEncoding = Encoding;
342 void MCStreamer::EmitCFIRememberState() {
343 MCSymbol *Label = EmitCFICommon();
344 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
345 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
346 CurFrame->Instructions.push_back(Instruction);
349 void MCStreamer::EmitCFIRestoreState() {
350 // FIXME: Error if there is no matching cfi_remember_state.
351 MCSymbol *Label = EmitCFICommon();
352 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
353 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
354 CurFrame->Instructions.push_back(Instruction);
357 void MCStreamer::EmitCFISameValue(int64_t Register) {
358 MCSymbol *Label = EmitCFICommon();
359 MCCFIInstruction Instruction =
360 MCCFIInstruction::createSameValue(Label, Register);
361 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
362 CurFrame->Instructions.push_back(Instruction);
365 void MCStreamer::EmitCFIRestore(int64_t Register) {
366 MCSymbol *Label = EmitCFICommon();
367 MCCFIInstruction Instruction =
368 MCCFIInstruction::createRestore(Label, Register);
369 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
370 CurFrame->Instructions.push_back(Instruction);
373 void MCStreamer::EmitCFIEscape(StringRef Values) {
374 MCSymbol *Label = EmitCFICommon();
375 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
376 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
377 CurFrame->Instructions.push_back(Instruction);
380 void MCStreamer::EmitCFISignalFrame() {
382 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
383 CurFrame->IsSignalFrame = true;
386 void MCStreamer::EmitCFIUndefined(int64_t Register) {
387 MCSymbol *Label = EmitCFICommon();
388 MCCFIInstruction Instruction =
389 MCCFIInstruction::createUndefined(Label, Register);
390 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
391 CurFrame->Instructions.push_back(Instruction);
394 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
395 MCSymbol *Label = EmitCFICommon();
396 MCCFIInstruction Instruction =
397 MCCFIInstruction::createRegister(Label, Register1, Register2);
398 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
399 CurFrame->Instructions.push_back(Instruction);
402 void MCStreamer::EmitCFIWindowSave() {
403 MCSymbol *Label = EmitCFICommon();
404 MCCFIInstruction Instruction =
405 MCCFIInstruction::createWindowSave(Label);
406 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
407 CurFrame->Instructions.push_back(Instruction);
410 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
411 W64UnwindInfos.push_back(Frame);
412 CurrentW64UnwindInfo = W64UnwindInfos.back();
415 void MCStreamer::EnsureValidW64UnwindInfo() {
416 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
417 if (!CurFrame || CurFrame->End)
418 report_fatal_error("No open Win64 EH frame function!");
421 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
422 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
423 if (CurFrame && !CurFrame->End)
424 report_fatal_error("Starting a function before ending the previous one!");
425 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
426 Frame->Begin = getContext().CreateTempSymbol();
427 Frame->Function = Symbol;
428 EmitLabel(Frame->Begin);
429 setCurrentW64UnwindInfo(Frame);
432 void MCStreamer::EmitWin64EHEndProc() {
433 EnsureValidW64UnwindInfo();
434 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
435 if (CurFrame->ChainedParent)
436 report_fatal_error("Not all chained regions terminated!");
437 CurFrame->End = getContext().CreateTempSymbol();
438 EmitLabel(CurFrame->End);
441 void MCStreamer::EmitWin64EHStartChained() {
442 EnsureValidW64UnwindInfo();
443 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
444 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
445 Frame->Begin = getContext().CreateTempSymbol();
446 Frame->Function = CurFrame->Function;
447 Frame->ChainedParent = CurFrame;
448 EmitLabel(Frame->Begin);
449 setCurrentW64UnwindInfo(Frame);
452 void MCStreamer::EmitWin64EHEndChained() {
453 EnsureValidW64UnwindInfo();
454 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
455 if (!CurFrame->ChainedParent)
456 report_fatal_error("End of a chained region outside a chained region!");
457 CurFrame->End = getContext().CreateTempSymbol();
458 EmitLabel(CurFrame->End);
459 CurrentW64UnwindInfo = CurFrame->ChainedParent;
462 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
464 EnsureValidW64UnwindInfo();
465 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
466 if (CurFrame->ChainedParent)
467 report_fatal_error("Chained unwind areas can't have handlers!");
468 CurFrame->ExceptionHandler = Sym;
469 if (!Except && !Unwind)
470 report_fatal_error("Don't know what kind of handler this is!");
472 CurFrame->HandlesUnwind = true;
474 CurFrame->HandlesExceptions = true;
477 void MCStreamer::EmitWin64EHHandlerData() {
478 EnsureValidW64UnwindInfo();
479 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
480 if (CurFrame->ChainedParent)
481 report_fatal_error("Chained unwind areas can't have handlers!");
484 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
485 EnsureValidW64UnwindInfo();
486 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
487 MCSymbol *Label = getContext().CreateTempSymbol();
488 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
490 CurFrame->Instructions.push_back(Inst);
493 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
494 EnsureValidW64UnwindInfo();
495 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
496 if (CurFrame->LastFrameInst >= 0)
497 report_fatal_error("Frame register and offset already specified!");
499 report_fatal_error("Misaligned frame pointer offset!");
500 MCSymbol *Label = getContext().CreateTempSymbol();
501 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
503 CurFrame->LastFrameInst = CurFrame->Instructions.size();
504 CurFrame->Instructions.push_back(Inst);
507 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
508 EnsureValidW64UnwindInfo();
510 report_fatal_error("Misaligned stack allocation!");
511 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
512 MCSymbol *Label = getContext().CreateTempSymbol();
513 MCWin64EHInstruction Inst(Label, Size);
515 CurFrame->Instructions.push_back(Inst);
518 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
519 EnsureValidW64UnwindInfo();
521 report_fatal_error("Misaligned saved register offset!");
522 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
523 MCSymbol *Label = getContext().CreateTempSymbol();
524 MCWin64EHInstruction Inst(
525 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
526 Label, Register, Offset);
528 CurFrame->Instructions.push_back(Inst);
531 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
532 EnsureValidW64UnwindInfo();
534 report_fatal_error("Misaligned saved vector register offset!");
535 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
536 MCSymbol *Label = getContext().CreateTempSymbol();
537 MCWin64EHInstruction Inst(
538 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
539 Label, Register, Offset);
541 CurFrame->Instructions.push_back(Inst);
544 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
545 EnsureValidW64UnwindInfo();
546 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
547 if (CurFrame->Instructions.size() > 0)
548 report_fatal_error("If present, PushMachFrame must be the first UOP");
549 MCSymbol *Label = getContext().CreateTempSymbol();
550 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
552 CurFrame->Instructions.push_back(Inst);
555 void MCStreamer::EmitWin64EHEndProlog() {
556 EnsureValidW64UnwindInfo();
557 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
558 CurFrame->PrologEnd = getContext().CreateTempSymbol();
559 EmitLabel(CurFrame->PrologEnd);
562 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
563 llvm_unreachable("This file format doesn't support this directive");
566 void MCStreamer::EmitFnStart() {
567 errs() << "Not implemented yet\n";
571 void MCStreamer::EmitFnEnd() {
572 errs() << "Not implemented yet\n";
576 void MCStreamer::EmitCantUnwind() {
577 errs() << "Not implemented yet\n";
581 void MCStreamer::EmitHandlerData() {
582 errs() << "Not implemented yet\n";
586 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
587 errs() << "Not implemented yet\n";
591 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
592 errs() << "Not implemented yet\n";
596 void MCStreamer::EmitPad(int64_t Offset) {
597 errs() << "Not implemented yet\n";
601 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
602 errs() << "Not implemented yet\n";
606 void MCStreamer::emitMipsHackELFFlags(unsigned Flags) {
609 void MCStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
612 void MCStreamer::EmitTCEntry(const MCSymbol &S) {
613 llvm_unreachable("Unsupported method");
616 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
617 /// the specified string in the output .s file. This capability is
618 /// indicated by the hasRawTextSupport() predicate.
619 void MCStreamer::EmitRawText(StringRef String) {
620 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
621 " something must not be fully mc'ized\n";
625 void MCStreamer::EmitRawText(const Twine &T) {
626 SmallString<128> Str;
628 EmitRawText(Str.str());
631 void MCStreamer::EmitFrames(MCAsmBackend *MAB, bool usingCFI) {
632 if (!getNumFrameInfos())
636 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, true);
639 MCDwarfFrameEmitter::Emit(*this, MAB, usingCFI, false);
642 void MCStreamer::EmitW64Tables() {
643 if (!getNumW64UnwindInfos())
646 MCWin64EHUnwindEmitter::Emit(*this);
649 void MCStreamer::Finish() {
650 if (!FrameInfos.empty() && !FrameInfos.back().End)
651 report_fatal_error("Unfinished frame!");
656 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
657 report_fatal_error("Not supported!");
658 return *(static_cast<MCSymbolData*>(0));