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 void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
39 MCStreamer::MCStreamer(MCContext &Ctx)
40 : Context(Ctx), CurrentW64UnwindInfo(nullptr) {
41 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
44 MCStreamer::~MCStreamer() {
45 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
46 delete W64UnwindInfos[i];
49 void MCStreamer::reset() {
50 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
51 delete W64UnwindInfos[i];
52 W64UnwindInfos.clear();
53 CurrentW64UnwindInfo = nullptr;
55 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
58 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
61 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
63 MCSymbolRefExpr::Create(A, Variant, Context);
65 MCSymbolRefExpr::Create(B, Variant, Context);
66 const MCExpr *AddrDelta =
67 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
71 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
72 assert(!isa<MCSymbolRefExpr>(Expr));
73 if (Context.getAsmInfo()->hasAggressiveSymbolFolding())
76 MCSymbol *ABS = Context.CreateTempSymbol();
77 EmitAssignment(ABS, Expr);
78 return MCSymbolRefExpr::Create(ABS, Context);
81 raw_ostream &MCStreamer::GetCommentOS() {
82 // By default, discard comments.
86 void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
88 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
89 for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
90 E = FrameInfos.end(); I != E; ++I)
91 I->CompactUnwindEncoding =
92 (MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
95 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
96 const MCSymbol *Label, int PointerSize) {
97 // emit the sequence to set the address
98 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
99 EmitULEB128IntValue(PointerSize + 1);
100 EmitIntValue(dwarf::DW_LNE_set_address, 1);
101 EmitSymbolValue(Label, PointerSize);
103 // emit the sequence for the LineDelta (from 1) and a zero address delta.
104 MCDwarfLineAddr::Emit(this, LineDelta, 0);
107 /// EmitIntValue - Special case of EmitValue that avoids the client having to
108 /// pass in a MCExpr for constant integers.
109 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
110 assert(Size <= 8 && "Invalid size");
111 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
114 const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
115 for (unsigned i = 0; i != Size; ++i) {
116 unsigned index = isLittleEndian ? i : (Size - i - 1);
117 buf[i] = uint8_t(Value >> (index * 8));
119 EmitBytes(StringRef(buf, Size));
122 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
123 /// client having to pass in a MCExpr for constant integers.
124 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
125 SmallString<128> Tmp;
126 raw_svector_ostream OSE(Tmp);
127 encodeULEB128(Value, OSE, Padding);
128 EmitBytes(OSE.str());
131 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
132 /// client having to pass in a MCExpr for constant integers.
133 void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
134 SmallString<128> Tmp;
135 raw_svector_ostream OSE(Tmp);
136 encodeSLEB128(Value, OSE);
137 EmitBytes(OSE.str());
140 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
141 const MCExpr *ABS = ForceExpAbs(Value);
142 EmitValue(ABS, Size);
146 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
148 EmitValueImpl(Value, Size, Loc);
151 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
152 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
155 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
156 report_fatal_error("unsupported directive in streamer");
159 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
160 report_fatal_error("unsupported directive in streamer");
163 /// EmitFill - Emit NumBytes bytes worth of the value specified by
164 /// FillValue. This implements directives such as '.space'.
165 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
166 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
167 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
171 /// The implementation in this class just redirects to EmitFill.
172 void MCStreamer::EmitZeros(uint64_t NumBytes) {
173 EmitFill(NumBytes, 0);
176 unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
178 StringRef Filename, unsigned CUID) {
179 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
182 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
183 unsigned Column, unsigned Flags,
185 unsigned Discriminator,
186 StringRef FileName) {
187 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
191 MCSymbol *MCStreamer::getDwarfLineTableSymbol(unsigned CUID) {
192 MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
193 if (!Table.getLabel()) {
194 StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
196 Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
198 return Table.getLabel();
201 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
202 if (FrameInfos.empty())
204 return &FrameInfos.back();
207 void MCStreamer::EnsureValidFrame() {
208 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
209 if (!CurFrame || CurFrame->End)
210 report_fatal_error("No open frame");
213 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
214 MCSymbol *EHSymbol) {
217 void MCStreamer::InitSections() {
218 SwitchSection(getContext().getObjectFileInfo()->getTextSection());
221 void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
223 Symbol->setSection(*Section);
225 Symbol->setUndefined();
227 // As we emit symbols into a section, track the order so that they can
228 // be sorted upon later. Zero is reserved to mean 'unemitted'.
229 SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
232 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
233 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
234 assert(getCurrentSection().first && "Cannot emit before setting section!");
235 AssignSection(Symbol, getCurrentSection().first);
237 MCTargetStreamer *TS = getTargetStreamer();
239 TS->emitLabel(Symbol);
242 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
244 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
245 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
248 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
252 void MCStreamer::EmitCFIStartProc(bool IsSimple) {
253 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
254 if (CurFrame && !CurFrame->End)
255 report_fatal_error("Starting a frame before finishing the previous one!");
257 MCDwarfFrameInfo Frame;
258 Frame.IsSimple = IsSimple;
259 EmitCFIStartProcImpl(Frame);
261 FrameInfos.push_back(Frame);
264 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
267 void MCStreamer::EmitCFIEndProc() {
269 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
270 EmitCFIEndProcImpl(*CurFrame);
273 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
274 // Put a dummy non-null value in Frame.End to mark that this frame has been
276 Frame.End = (MCSymbol *) 1;
279 MCSymbol *MCStreamer::EmitCFICommon() {
281 MCSymbol *Label = getContext().CreateTempSymbol();
286 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
287 MCSymbol *Label = EmitCFICommon();
288 MCCFIInstruction Instruction =
289 MCCFIInstruction::createDefCfa(Label, Register, Offset);
290 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
291 CurFrame->Instructions.push_back(Instruction);
294 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
295 MCSymbol *Label = EmitCFICommon();
296 MCCFIInstruction Instruction =
297 MCCFIInstruction::createDefCfaOffset(Label, Offset);
298 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
299 CurFrame->Instructions.push_back(Instruction);
302 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
303 MCSymbol *Label = EmitCFICommon();
304 MCCFIInstruction Instruction =
305 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
306 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
307 CurFrame->Instructions.push_back(Instruction);
310 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
311 MCSymbol *Label = EmitCFICommon();
312 MCCFIInstruction Instruction =
313 MCCFIInstruction::createDefCfaRegister(Label, Register);
314 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
315 CurFrame->Instructions.push_back(Instruction);
318 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
319 MCSymbol *Label = EmitCFICommon();
320 MCCFIInstruction Instruction =
321 MCCFIInstruction::createOffset(Label, Register, Offset);
322 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
323 CurFrame->Instructions.push_back(Instruction);
326 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
327 MCSymbol *Label = EmitCFICommon();
328 MCCFIInstruction Instruction =
329 MCCFIInstruction::createRelOffset(Label, Register, Offset);
330 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
331 CurFrame->Instructions.push_back(Instruction);
334 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
337 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
338 CurFrame->Personality = Sym;
339 CurFrame->PersonalityEncoding = Encoding;
342 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
344 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
345 CurFrame->Lsda = Sym;
346 CurFrame->LsdaEncoding = Encoding;
349 void MCStreamer::EmitCFIRememberState() {
350 MCSymbol *Label = EmitCFICommon();
351 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
352 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
353 CurFrame->Instructions.push_back(Instruction);
356 void MCStreamer::EmitCFIRestoreState() {
357 // FIXME: Error if there is no matching cfi_remember_state.
358 MCSymbol *Label = EmitCFICommon();
359 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
360 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
361 CurFrame->Instructions.push_back(Instruction);
364 void MCStreamer::EmitCFISameValue(int64_t Register) {
365 MCSymbol *Label = EmitCFICommon();
366 MCCFIInstruction Instruction =
367 MCCFIInstruction::createSameValue(Label, Register);
368 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
369 CurFrame->Instructions.push_back(Instruction);
372 void MCStreamer::EmitCFIRestore(int64_t Register) {
373 MCSymbol *Label = EmitCFICommon();
374 MCCFIInstruction Instruction =
375 MCCFIInstruction::createRestore(Label, Register);
376 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
377 CurFrame->Instructions.push_back(Instruction);
380 void MCStreamer::EmitCFIEscape(StringRef Values) {
381 MCSymbol *Label = EmitCFICommon();
382 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
383 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
384 CurFrame->Instructions.push_back(Instruction);
387 void MCStreamer::EmitCFISignalFrame() {
389 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
390 CurFrame->IsSignalFrame = true;
393 void MCStreamer::EmitCFIUndefined(int64_t Register) {
394 MCSymbol *Label = EmitCFICommon();
395 MCCFIInstruction Instruction =
396 MCCFIInstruction::createUndefined(Label, Register);
397 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
398 CurFrame->Instructions.push_back(Instruction);
401 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
402 MCSymbol *Label = EmitCFICommon();
403 MCCFIInstruction Instruction =
404 MCCFIInstruction::createRegister(Label, Register1, Register2);
405 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
406 CurFrame->Instructions.push_back(Instruction);
409 void MCStreamer::EmitCFIWindowSave() {
410 MCSymbol *Label = EmitCFICommon();
411 MCCFIInstruction Instruction =
412 MCCFIInstruction::createWindowSave(Label);
413 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
414 CurFrame->Instructions.push_back(Instruction);
417 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
418 W64UnwindInfos.push_back(Frame);
419 CurrentW64UnwindInfo = W64UnwindInfos.back();
422 void MCStreamer::EnsureValidW64UnwindInfo() {
423 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
424 if (!CurFrame || CurFrame->End)
425 report_fatal_error("No open Win64 EH frame function!");
428 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
429 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
430 if (CurFrame && !CurFrame->End)
431 report_fatal_error("Starting a function before ending the previous one!");
432 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
433 Frame->Begin = getContext().CreateTempSymbol();
434 Frame->Function = Symbol;
435 EmitLabel(Frame->Begin);
436 setCurrentW64UnwindInfo(Frame);
439 void MCStreamer::EmitWin64EHEndProc() {
440 EnsureValidW64UnwindInfo();
441 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
442 if (CurFrame->ChainedParent)
443 report_fatal_error("Not all chained regions terminated!");
444 CurFrame->End = getContext().CreateTempSymbol();
445 EmitLabel(CurFrame->End);
448 void MCStreamer::EmitWin64EHStartChained() {
449 EnsureValidW64UnwindInfo();
450 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
451 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
452 Frame->Begin = getContext().CreateTempSymbol();
453 Frame->Function = CurFrame->Function;
454 Frame->ChainedParent = CurFrame;
455 EmitLabel(Frame->Begin);
456 setCurrentW64UnwindInfo(Frame);
459 void MCStreamer::EmitWin64EHEndChained() {
460 EnsureValidW64UnwindInfo();
461 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
462 if (!CurFrame->ChainedParent)
463 report_fatal_error("End of a chained region outside a chained region!");
464 CurFrame->End = getContext().CreateTempSymbol();
465 EmitLabel(CurFrame->End);
466 CurrentW64UnwindInfo = CurFrame->ChainedParent;
469 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
471 EnsureValidW64UnwindInfo();
472 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
473 if (CurFrame->ChainedParent)
474 report_fatal_error("Chained unwind areas can't have handlers!");
475 CurFrame->ExceptionHandler = Sym;
476 if (!Except && !Unwind)
477 report_fatal_error("Don't know what kind of handler this is!");
479 CurFrame->HandlesUnwind = true;
481 CurFrame->HandlesExceptions = true;
484 void MCStreamer::EmitWin64EHHandlerData() {
485 EnsureValidW64UnwindInfo();
486 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
487 if (CurFrame->ChainedParent)
488 report_fatal_error("Chained unwind areas can't have handlers!");
491 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
492 EnsureValidW64UnwindInfo();
493 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
494 MCSymbol *Label = getContext().CreateTempSymbol();
495 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
497 CurFrame->Instructions.push_back(Inst);
500 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
501 EnsureValidW64UnwindInfo();
502 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
503 if (CurFrame->LastFrameInst >= 0)
504 report_fatal_error("Frame register and offset already specified!");
506 report_fatal_error("Misaligned frame pointer offset!");
507 MCSymbol *Label = getContext().CreateTempSymbol();
508 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
510 CurFrame->LastFrameInst = CurFrame->Instructions.size();
511 CurFrame->Instructions.push_back(Inst);
514 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
515 EnsureValidW64UnwindInfo();
517 report_fatal_error("Misaligned stack allocation!");
518 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
519 MCSymbol *Label = getContext().CreateTempSymbol();
520 MCWin64EHInstruction Inst(Label, Size);
522 CurFrame->Instructions.push_back(Inst);
525 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
526 EnsureValidW64UnwindInfo();
528 report_fatal_error("Misaligned saved register offset!");
529 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
530 MCSymbol *Label = getContext().CreateTempSymbol();
531 MCWin64EHInstruction Inst(
532 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
533 Label, Register, Offset);
535 CurFrame->Instructions.push_back(Inst);
538 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
539 EnsureValidW64UnwindInfo();
541 report_fatal_error("Misaligned saved vector register offset!");
542 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
543 MCSymbol *Label = getContext().CreateTempSymbol();
544 MCWin64EHInstruction Inst(
545 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
546 Label, Register, Offset);
548 CurFrame->Instructions.push_back(Inst);
551 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
552 EnsureValidW64UnwindInfo();
553 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
554 if (CurFrame->Instructions.size() > 0)
555 report_fatal_error("If present, PushMachFrame must be the first UOP");
556 MCSymbol *Label = getContext().CreateTempSymbol();
557 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
559 CurFrame->Instructions.push_back(Inst);
562 void MCStreamer::EmitWin64EHEndProlog() {
563 EnsureValidW64UnwindInfo();
564 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
565 CurFrame->PrologEnd = getContext().CreateTempSymbol();
566 EmitLabel(CurFrame->PrologEnd);
569 void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
572 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
575 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
576 /// the specified string in the output .s file. This capability is
577 /// indicated by the hasRawTextSupport() predicate.
578 void MCStreamer::EmitRawTextImpl(StringRef String) {
579 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
580 " something must not be fully mc'ized\n";
584 void MCStreamer::EmitRawText(const Twine &T) {
585 SmallString<128> Str;
586 EmitRawTextImpl(T.toStringRef(Str));
589 void MCStreamer::EmitW64Tables() {
590 if (!getNumW64UnwindInfos())
593 MCWin64EHUnwindEmitter::Emit(*this);
596 void MCStreamer::Finish() {
597 if (!FrameInfos.empty() && !FrameInfos.back().End)
598 report_fatal_error("Unfinished frame!");
600 MCTargetStreamer *TS = getTargetStreamer();
607 void MCStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
608 Symbol->setVariableValue(Value);
610 MCTargetStreamer *TS = getTargetStreamer();
612 TS->emitAssignment(Symbol, Value);
615 void MCStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {}
616 void MCStreamer::EmitThumbFunc(MCSymbol *Func) {}
617 void MCStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
618 void MCStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {}
619 void MCStreamer::EndCOFFSymbolDef() {}
620 void MCStreamer::EmitFileDirective(StringRef Filename) {}
621 void MCStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {}
622 void MCStreamer::EmitCOFFSymbolType(int Type) {}
623 void MCStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
624 void MCStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
625 unsigned ByteAlignment) {}
626 void MCStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
627 uint64_t Size, unsigned ByteAlignment) {}
628 void MCStreamer::ChangeSection(const MCSection *, const MCExpr *) {}
629 void MCStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {}
630 void MCStreamer::EmitBytes(StringRef Data) {}
631 void MCStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
633 void MCStreamer::EmitULEB128Value(const MCExpr *Value) {}
634 void MCStreamer::EmitSLEB128Value(const MCExpr *Value) {}
635 void MCStreamer::EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
637 unsigned MaxBytesToEmit) {}
638 void MCStreamer::EmitCodeAlignment(unsigned ByteAlignment,
639 unsigned MaxBytesToEmit) {}
640 bool MCStreamer::EmitValueToOffset(const MCExpr *Offset, unsigned char Value) {
643 void MCStreamer::EmitBundleAlignMode(unsigned AlignPow2) {}
644 void MCStreamer::EmitBundleLock(bool AlignToEnd) {}
645 void MCStreamer::FinishImpl() {}
646 void MCStreamer::EmitBundleUnlock() {}