1 //===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
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"
20 #include <cstdlib>
21 using namespace llvm;
22
MCStreamer(MCContext & Ctx)23 MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), EmitEHFrame(true),
24 EmitDebugFrame(false),
25 CurrentW64UnwindInfo(0) {
26 const MCSection *section = NULL;
27 SectionStack.push_back(std::make_pair(section, section));
28 }
29
~MCStreamer()30 MCStreamer::~MCStreamer() {
31 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
32 delete W64UnwindInfos[i];
33 }
34
BuildSymbolDiff(MCContext & Context,const MCSymbol * A,const MCSymbol * B)35 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
36 const MCSymbol *A,
37 const MCSymbol *B) {
38 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
39 const MCExpr *ARef =
40 MCSymbolRefExpr::Create(A, Variant, Context);
41 const MCExpr *BRef =
42 MCSymbolRefExpr::Create(B, Variant, Context);
43 const MCExpr *AddrDelta =
44 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
45 return AddrDelta;
46 }
47
ForceExpAbs(const MCExpr * Expr)48 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
49 if (Context.getAsmInfo().hasAggressiveSymbolFolding() ||
50 isa<MCSymbolRefExpr>(Expr))
51 return Expr;
52
53 MCSymbol *ABS = Context.CreateTempSymbol();
54 EmitAssignment(ABS, Expr);
55 return MCSymbolRefExpr::Create(ABS, Context);
56 }
57
GetCommentOS()58 raw_ostream &MCStreamer::GetCommentOS() {
59 // By default, discard comments.
60 return nulls();
61 }
62
EmitDwarfSetLineAddr(int64_t LineDelta,const MCSymbol * Label,int PointerSize)63 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
64 const MCSymbol *Label, int PointerSize) {
65 // emit the sequence to set the address
66 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
67 EmitULEB128IntValue(PointerSize + 1);
68 EmitIntValue(dwarf::DW_LNE_set_address, 1);
69 EmitSymbolValue(Label, PointerSize);
70
71 // emit the sequence for the LineDelta (from 1) and a zero address delta.
72 MCDwarfLineAddr::Emit(this, LineDelta, 0);
73 }
74
75 /// EmitIntValue - Special case of EmitValue that avoids the client having to
76 /// pass in a MCExpr for constant integers.
EmitIntValue(uint64_t Value,unsigned Size,unsigned AddrSpace)77 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size,
78 unsigned AddrSpace) {
79 assert(Size <= 8 && "Invalid size");
80 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
81 "Invalid size");
82 char buf[8];
83 const bool isLittleEndian = Context.getAsmInfo().isLittleEndian();
84 for (unsigned i = 0; i != Size; ++i) {
85 unsigned index = isLittleEndian ? i : (Size - i - 1);
86 buf[i] = uint8_t(Value >> (index * 8));
87 }
88 EmitBytes(StringRef(buf, Size), AddrSpace);
89 }
90
91 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
92 /// client having to pass in a MCExpr for constant integers.
EmitULEB128IntValue(uint64_t Value,unsigned AddrSpace)93 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace) {
94 SmallString<32> Tmp;
95 raw_svector_ostream OSE(Tmp);
96 MCObjectWriter::EncodeULEB128(Value, OSE);
97 EmitBytes(OSE.str(), AddrSpace);
98 }
99
100 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
101 /// client having to pass in a MCExpr for constant integers.
EmitSLEB128IntValue(int64_t Value,unsigned AddrSpace)102 void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) {
103 SmallString<32> Tmp;
104 raw_svector_ostream OSE(Tmp);
105 MCObjectWriter::EncodeSLEB128(Value, OSE);
106 EmitBytes(OSE.str(), AddrSpace);
107 }
108
EmitAbsValue(const MCExpr * Value,unsigned Size,unsigned AddrSpace)109 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
110 unsigned AddrSpace) {
111 const MCExpr *ABS = ForceExpAbs(Value);
112 EmitValue(ABS, Size, AddrSpace);
113 }
114
115
EmitValue(const MCExpr * Value,unsigned Size,unsigned AddrSpace)116 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
117 unsigned AddrSpace) {
118 EmitValueImpl(Value, Size, AddrSpace);
119 }
120
EmitSymbolValue(const MCSymbol * Sym,unsigned Size,unsigned AddrSpace)121 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
122 unsigned AddrSpace) {
123 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size,
124 AddrSpace);
125 }
126
EmitGPRel32Value(const MCExpr * Value)127 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
128 report_fatal_error("unsupported directive in streamer");
129 }
130
131 /// EmitFill - Emit NumBytes bytes worth of the value specified by
132 /// FillValue. This implements directives such as '.space'.
EmitFill(uint64_t NumBytes,uint8_t FillValue,unsigned AddrSpace)133 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
134 unsigned AddrSpace) {
135 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
136 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
137 EmitValue(E, 1, AddrSpace);
138 }
139
EmitDwarfFileDirective(unsigned FileNo,StringRef Filename)140 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
141 StringRef Filename) {
142 return getContext().GetDwarfFile(Filename, FileNo) == 0;
143 }
144
EmitDwarfLocDirective(unsigned FileNo,unsigned Line,unsigned Column,unsigned Flags,unsigned Isa,unsigned Discriminator,StringRef FileName)145 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
146 unsigned Column, unsigned Flags,
147 unsigned Isa,
148 unsigned Discriminator,
149 StringRef FileName) {
150 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
151 Discriminator);
152 }
153
getCurrentFrameInfo()154 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
155 if (FrameInfos.empty())
156 return NULL;
157 return &FrameInfos.back();
158 }
159
EnsureValidFrame()160 void MCStreamer::EnsureValidFrame() {
161 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
162 if (!CurFrame || CurFrame->End)
163 report_fatal_error("No open frame");
164 }
165
EmitEHSymAttributes(const MCSymbol * Symbol,MCSymbol * EHSymbol)166 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
167 MCSymbol *EHSymbol) {
168 }
169
EmitLabel(MCSymbol * Symbol)170 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
171 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
172 assert(getCurrentSection() && "Cannot emit before setting section!");
173 Symbol->setSection(*getCurrentSection());
174
175 StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
176 if (!Symbol->getName().startswith(Prefix))
177 LastNonPrivate = Symbol;
178 }
179
EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding)180 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
181 EnsureValidFrame();
182 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
183 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
184 }
185
EmitCFISections(bool EH,bool Debug)186 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
187 assert(EH || Debug);
188 EmitEHFrame = EH;
189 EmitDebugFrame = Debug;
190 }
191
EmitCFIStartProc()192 void MCStreamer::EmitCFIStartProc() {
193 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
194 if (CurFrame && !CurFrame->End)
195 report_fatal_error("Starting a frame before finishing the previous one!");
196 MCDwarfFrameInfo Frame;
197 Frame.Begin = getContext().CreateTempSymbol();
198 Frame.Function = LastNonPrivate;
199 EmitLabel(Frame.Begin);
200 FrameInfos.push_back(Frame);
201 }
202
EmitCFIEndProc()203 void MCStreamer::EmitCFIEndProc() {
204 EnsureValidFrame();
205 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
206 CurFrame->End = getContext().CreateTempSymbol();
207 EmitLabel(CurFrame->End);
208 }
209
EmitCFIDefCfa(int64_t Register,int64_t Offset)210 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
211 EnsureValidFrame();
212 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
213 MCSymbol *Label = getContext().CreateTempSymbol();
214 EmitLabel(Label);
215 MachineLocation Dest(MachineLocation::VirtualFP);
216 MachineLocation Source(Register, -Offset);
217 MCCFIInstruction Instruction(Label, Dest, Source);
218 CurFrame->Instructions.push_back(Instruction);
219 }
220
EmitCFIDefCfaOffset(int64_t Offset)221 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
222 EnsureValidFrame();
223 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
224 MCSymbol *Label = getContext().CreateTempSymbol();
225 EmitLabel(Label);
226 MachineLocation Dest(MachineLocation::VirtualFP);
227 MachineLocation Source(MachineLocation::VirtualFP, -Offset);
228 MCCFIInstruction Instruction(Label, Dest, Source);
229 CurFrame->Instructions.push_back(Instruction);
230 }
231
EmitCFIAdjustCfaOffset(int64_t Adjustment)232 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
233 EnsureValidFrame();
234 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
235 MCSymbol *Label = getContext().CreateTempSymbol();
236 EmitLabel(Label);
237 MachineLocation Dest(MachineLocation::VirtualFP);
238 MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
239 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
240 CurFrame->Instructions.push_back(Instruction);
241 }
242
EmitCFIDefCfaRegister(int64_t Register)243 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
244 EnsureValidFrame();
245 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
246 MCSymbol *Label = getContext().CreateTempSymbol();
247 EmitLabel(Label);
248 MachineLocation Dest(Register);
249 MachineLocation Source(MachineLocation::VirtualFP);
250 MCCFIInstruction Instruction(Label, Dest, Source);
251 CurFrame->Instructions.push_back(Instruction);
252 }
253
EmitCFIOffset(int64_t Register,int64_t Offset)254 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
255 EnsureValidFrame();
256 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
257 MCSymbol *Label = getContext().CreateTempSymbol();
258 EmitLabel(Label);
259 MachineLocation Dest(Register, Offset);
260 MachineLocation Source(Register, Offset);
261 MCCFIInstruction Instruction(Label, Dest, Source);
262 CurFrame->Instructions.push_back(Instruction);
263 }
264
EmitCFIRelOffset(int64_t Register,int64_t Offset)265 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
266 EnsureValidFrame();
267 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
268 MCSymbol *Label = getContext().CreateTempSymbol();
269 EmitLabel(Label);
270 MachineLocation Dest(Register, Offset);
271 MachineLocation Source(Register, Offset);
272 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
273 CurFrame->Instructions.push_back(Instruction);
274 }
275
EmitCFIPersonality(const MCSymbol * Sym,unsigned Encoding)276 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
277 unsigned Encoding) {
278 EnsureValidFrame();
279 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
280 CurFrame->Personality = Sym;
281 CurFrame->PersonalityEncoding = Encoding;
282 }
283
EmitCFILsda(const MCSymbol * Sym,unsigned Encoding)284 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
285 EnsureValidFrame();
286 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
287 CurFrame->Lsda = Sym;
288 CurFrame->LsdaEncoding = Encoding;
289 }
290
EmitCFIRememberState()291 void MCStreamer::EmitCFIRememberState() {
292 EnsureValidFrame();
293 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
294 MCSymbol *Label = getContext().CreateTempSymbol();
295 EmitLabel(Label);
296 MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label);
297 CurFrame->Instructions.push_back(Instruction);
298 }
299
EmitCFIRestoreState()300 void MCStreamer::EmitCFIRestoreState() {
301 // FIXME: Error if there is no matching cfi_remember_state.
302 EnsureValidFrame();
303 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
304 MCSymbol *Label = getContext().CreateTempSymbol();
305 EmitLabel(Label);
306 MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label);
307 CurFrame->Instructions.push_back(Instruction);
308 }
309
EmitCFISameValue(int64_t Register)310 void MCStreamer::EmitCFISameValue(int64_t Register) {
311 EnsureValidFrame();
312 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
313 MCSymbol *Label = getContext().CreateTempSymbol();
314 EmitLabel(Label);
315 MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register);
316 CurFrame->Instructions.push_back(Instruction);
317 }
318
setCurrentW64UnwindInfo(MCWin64EHUnwindInfo * Frame)319 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
320 W64UnwindInfos.push_back(Frame);
321 CurrentW64UnwindInfo = W64UnwindInfos.back();
322 }
323
EnsureValidW64UnwindInfo()324 void MCStreamer::EnsureValidW64UnwindInfo() {
325 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
326 if (!CurFrame || CurFrame->End)
327 report_fatal_error("No open Win64 EH frame function!");
328 }
329
EmitWin64EHStartProc(const MCSymbol * Symbol)330 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
331 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
332 if (CurFrame && !CurFrame->End)
333 report_fatal_error("Starting a function before ending the previous one!");
334 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
335 Frame->Begin = getContext().CreateTempSymbol();
336 Frame->Function = Symbol;
337 EmitLabel(Frame->Begin);
338 setCurrentW64UnwindInfo(Frame);
339 }
340
EmitWin64EHEndProc()341 void MCStreamer::EmitWin64EHEndProc() {
342 EnsureValidW64UnwindInfo();
343 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
344 if (CurFrame->ChainedParent)
345 report_fatal_error("Not all chained regions terminated!");
346 CurFrame->End = getContext().CreateTempSymbol();
347 EmitLabel(CurFrame->End);
348 }
349
EmitWin64EHStartChained()350 void MCStreamer::EmitWin64EHStartChained() {
351 EnsureValidW64UnwindInfo();
352 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
353 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
354 Frame->Begin = getContext().CreateTempSymbol();
355 Frame->Function = CurFrame->Function;
356 Frame->ChainedParent = CurFrame;
357 EmitLabel(Frame->Begin);
358 setCurrentW64UnwindInfo(Frame);
359 }
360
EmitWin64EHEndChained()361 void MCStreamer::EmitWin64EHEndChained() {
362 EnsureValidW64UnwindInfo();
363 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
364 if (!CurFrame->ChainedParent)
365 report_fatal_error("End of a chained region outside a chained region!");
366 CurFrame->End = getContext().CreateTempSymbol();
367 EmitLabel(CurFrame->End);
368 CurrentW64UnwindInfo = CurFrame->ChainedParent;
369 }
370
EmitWin64EHHandler(const MCSymbol * Sym,bool Unwind,bool Except)371 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
372 bool Except) {
373 EnsureValidW64UnwindInfo();
374 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
375 if (CurFrame->ChainedParent)
376 report_fatal_error("Chained unwind areas can't have handlers!");
377 CurFrame->ExceptionHandler = Sym;
378 if (!Except && !Unwind)
379 report_fatal_error("Don't know what kind of handler this is!");
380 if (Unwind)
381 CurFrame->HandlesUnwind = true;
382 if (Except)
383 CurFrame->HandlesExceptions = true;
384 }
385
EmitWin64EHHandlerData()386 void MCStreamer::EmitWin64EHHandlerData() {
387 EnsureValidW64UnwindInfo();
388 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
389 if (CurFrame->ChainedParent)
390 report_fatal_error("Chained unwind areas can't have handlers!");
391 }
392
EmitWin64EHPushReg(unsigned Register)393 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
394 EnsureValidW64UnwindInfo();
395 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
396 MCSymbol *Label = getContext().CreateTempSymbol();
397 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
398 EmitLabel(Label);
399 CurFrame->Instructions.push_back(Inst);
400 }
401
EmitWin64EHSetFrame(unsigned Register,unsigned Offset)402 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
403 EnsureValidW64UnwindInfo();
404 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
405 if (CurFrame->LastFrameInst >= 0)
406 report_fatal_error("Frame register and offset already specified!");
407 if (Offset & 0x0F)
408 report_fatal_error("Misaligned frame pointer offset!");
409 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, NULL, Register, Offset);
410 CurFrame->LastFrameInst = CurFrame->Instructions.size();
411 CurFrame->Instructions.push_back(Inst);
412 }
413
EmitWin64EHAllocStack(unsigned Size)414 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
415 EnsureValidW64UnwindInfo();
416 if (Size & 7)
417 report_fatal_error("Misaligned stack allocation!");
418 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
419 MCSymbol *Label = getContext().CreateTempSymbol();
420 MCWin64EHInstruction Inst(Label, Size);
421 EmitLabel(Label);
422 CurFrame->Instructions.push_back(Inst);
423 }
424
EmitWin64EHSaveReg(unsigned Register,unsigned Offset)425 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
426 EnsureValidW64UnwindInfo();
427 if (Offset & 7)
428 report_fatal_error("Misaligned saved register offset!");
429 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
430 MCSymbol *Label = getContext().CreateTempSymbol();
431 MCWin64EHInstruction Inst(
432 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
433 Label, Register, Offset);
434 EmitLabel(Label);
435 CurFrame->Instructions.push_back(Inst);
436 }
437
EmitWin64EHSaveXMM(unsigned Register,unsigned Offset)438 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
439 EnsureValidW64UnwindInfo();
440 if (Offset & 0x0F)
441 report_fatal_error("Misaligned saved vector register offset!");
442 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
443 MCSymbol *Label = getContext().CreateTempSymbol();
444 MCWin64EHInstruction Inst(
445 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
446 Label, Register, Offset);
447 EmitLabel(Label);
448 CurFrame->Instructions.push_back(Inst);
449 }
450
EmitWin64EHPushFrame(bool Code)451 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
452 EnsureValidW64UnwindInfo();
453 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
454 if (CurFrame->Instructions.size() > 0)
455 report_fatal_error("If present, PushMachFrame must be the first UOP");
456 MCSymbol *Label = getContext().CreateTempSymbol();
457 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
458 EmitLabel(Label);
459 CurFrame->Instructions.push_back(Inst);
460 }
461
EmitWin64EHEndProlog()462 void MCStreamer::EmitWin64EHEndProlog() {
463 EnsureValidW64UnwindInfo();
464 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
465 CurFrame->PrologEnd = getContext().CreateTempSymbol();
466 EmitLabel(CurFrame->PrologEnd);
467 }
468
EmitFnStart()469 void MCStreamer::EmitFnStart() {
470 errs() << "Not implemented yet\n";
471 abort();
472 }
473
EmitFnEnd()474 void MCStreamer::EmitFnEnd() {
475 errs() << "Not implemented yet\n";
476 abort();
477 }
478
EmitCantUnwind()479 void MCStreamer::EmitCantUnwind() {
480 errs() << "Not implemented yet\n";
481 abort();
482 }
483
EmitHandlerData()484 void MCStreamer::EmitHandlerData() {
485 errs() << "Not implemented yet\n";
486 abort();
487 }
488
EmitPersonality(const MCSymbol * Personality)489 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
490 errs() << "Not implemented yet\n";
491 abort();
492 }
493
EmitSetFP(unsigned FpReg,unsigned SpReg,int64_t Offset)494 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
495 errs() << "Not implemented yet\n";
496 abort();
497 }
498
EmitPad(int64_t Offset)499 void MCStreamer::EmitPad(int64_t Offset) {
500 errs() << "Not implemented yet\n";
501 abort();
502 }
503
EmitRegSave(const SmallVectorImpl<unsigned> & RegList,bool)504 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
505 errs() << "Not implemented yet\n";
506 abort();
507 }
508
509 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
510 /// the specified string in the output .s file. This capability is
511 /// indicated by the hasRawTextSupport() predicate.
EmitRawText(StringRef String)512 void MCStreamer::EmitRawText(StringRef String) {
513 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
514 " something must not be fully mc'ized\n";
515 abort();
516 }
517
EmitRawText(const Twine & T)518 void MCStreamer::EmitRawText(const Twine &T) {
519 SmallString<128> Str;
520 T.toVector(Str);
521 EmitRawText(Str.str());
522 }
523
EmitFrames(bool usingCFI)524 void MCStreamer::EmitFrames(bool usingCFI) {
525 if (!getNumFrameInfos())
526 return;
527
528 if (EmitEHFrame)
529 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
530
531 if (EmitDebugFrame)
532 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
533 }
534
EmitW64Tables()535 void MCStreamer::EmitW64Tables() {
536 if (!getNumW64UnwindInfos())
537 return;
538
539 MCWin64EHUnwindEmitter::Emit(*this);
540 }
541