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/Support/LEB128.h" 19 #include "llvm/ADT/SmallString.h" 20 #include "llvm/ADT/Twine.h" 21 #include <cstdlib> 22 using namespace llvm; 23 24 MCStreamer::MCStreamer(MCContext &Ctx) 25 : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false), 26 CurrentW64UnwindInfo(0), LastSymbol(0) { 27 const MCSection *section = NULL; 28 SectionStack.push_back(std::make_pair(section, section)); 29 } 30 31 MCStreamer::~MCStreamer() { 32 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i) 33 delete W64UnwindInfos[i]; 34 } 35 36 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, 37 const MCSymbol *A, 38 const MCSymbol *B) { 39 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None; 40 const MCExpr *ARef = 41 MCSymbolRefExpr::Create(A, Variant, Context); 42 const MCExpr *BRef = 43 MCSymbolRefExpr::Create(B, Variant, Context); 44 const MCExpr *AddrDelta = 45 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context); 46 return AddrDelta; 47 } 48 49 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) { 50 if (Context.getAsmInfo().hasAggressiveSymbolFolding() || 51 isa<MCSymbolRefExpr>(Expr)) 52 return Expr; 53 54 MCSymbol *ABS = Context.CreateTempSymbol(); 55 EmitAssignment(ABS, Expr); 56 return MCSymbolRefExpr::Create(ABS, Context); 57 } 58 59 raw_ostream &MCStreamer::GetCommentOS() { 60 // By default, discard comments. 61 return nulls(); 62 } 63 64 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, 65 const MCSymbol *Label, int PointerSize) { 66 // emit the sequence to set the address 67 EmitIntValue(dwarf::DW_LNS_extended_op, 1); 68 EmitULEB128IntValue(PointerSize + 1); 69 EmitIntValue(dwarf::DW_LNE_set_address, 1); 70 EmitSymbolValue(Label, PointerSize); 71 72 // emit the sequence for the LineDelta (from 1) and a zero address delta. 73 MCDwarfLineAddr::Emit(this, LineDelta, 0); 74 } 75 76 /// EmitIntValue - Special case of EmitValue that avoids the client having to 77 /// pass in a MCExpr for constant integers. 78 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 79 unsigned AddrSpace) { 80 assert(Size <= 8 && "Invalid size"); 81 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && 82 "Invalid size"); 83 char buf[8]; 84 const bool isLittleEndian = Context.getAsmInfo().isLittleEndian(); 85 for (unsigned i = 0; i != Size; ++i) { 86 unsigned index = isLittleEndian ? i : (Size - i - 1); 87 buf[i] = uint8_t(Value >> (index * 8)); 88 } 89 EmitBytes(StringRef(buf, Size), AddrSpace); 90 } 91 92 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the 93 /// client having to pass in a MCExpr for constant integers. 94 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace, 95 unsigned Padding) { 96 SmallString<128> Tmp; 97 raw_svector_ostream OSE(Tmp); 98 encodeULEB128(Value, OSE, Padding); 99 EmitBytes(OSE.str(), AddrSpace); 100 } 101 102 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the 103 /// client having to pass in a MCExpr for constant integers. 104 void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { 105 SmallString<128> Tmp; 106 raw_svector_ostream OSE(Tmp); 107 encodeSLEB128(Value, OSE); 108 EmitBytes(OSE.str(), AddrSpace); 109 } 110 111 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, 112 unsigned AddrSpace) { 113 const MCExpr *ABS = ForceExpAbs(Value); 114 EmitValue(ABS, Size, AddrSpace); 115 } 116 117 118 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, 119 unsigned AddrSpace) { 120 EmitValueImpl(Value, Size, AddrSpace); 121 } 122 123 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 124 unsigned AddrSpace) { 125 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, 126 AddrSpace); 127 } 128 129 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) { 130 report_fatal_error("unsupported directive in streamer"); 131 } 132 133 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) { 134 report_fatal_error("unsupported directive in streamer"); 135 } 136 137 /// EmitFill - Emit NumBytes bytes worth of the value specified by 138 /// FillValue. This implements directives such as '.space'. 139 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, 140 unsigned AddrSpace) { 141 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); 142 for (uint64_t i = 0, e = NumBytes; i != e; ++i) 143 EmitValue(E, 1, AddrSpace); 144 } 145 146 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, 147 StringRef Directory, 148 StringRef Filename) { 149 return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0; 150 } 151 152 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, 153 unsigned Column, unsigned Flags, 154 unsigned Isa, 155 unsigned Discriminator, 156 StringRef FileName) { 157 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa, 158 Discriminator); 159 } 160 161 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { 162 if (FrameInfos.empty()) 163 return NULL; 164 return &FrameInfos.back(); 165 } 166 167 void MCStreamer::EnsureValidFrame() { 168 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 169 if (!CurFrame || CurFrame->End) 170 report_fatal_error("No open frame"); 171 } 172 173 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, 174 MCSymbol *EHSymbol) { 175 } 176 177 void MCStreamer::EmitLabel(MCSymbol *Symbol) { 178 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); 179 assert(getCurrentSection() && "Cannot emit before setting section!"); 180 Symbol->setSection(*getCurrentSection()); 181 LastSymbol = Symbol; 182 } 183 184 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) { 185 EnsureValidFrame(); 186 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 187 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding; 188 } 189 190 void MCStreamer::EmitCFISections(bool EH, bool Debug) { 191 assert(EH || Debug); 192 EmitEHFrame = EH; 193 EmitDebugFrame = Debug; 194 } 195 196 void MCStreamer::EmitCFIStartProc() { 197 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 198 if (CurFrame && !CurFrame->End) 199 report_fatal_error("Starting a frame before finishing the previous one!"); 200 201 MCDwarfFrameInfo Frame; 202 EmitCFIStartProcImpl(Frame); 203 204 FrameInfos.push_back(Frame); 205 } 206 207 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) { 208 } 209 210 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) { 211 Frame.Function = LastSymbol; 212 // If the function is externally visible, we need to create a local 213 // symbol to avoid relocations. 214 StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix(); 215 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) { 216 Frame.Begin = LastSymbol; 217 } else { 218 Frame.Begin = getContext().CreateTempSymbol(); 219 EmitLabel(Frame.Begin); 220 } 221 } 222 223 void MCStreamer::EmitCFIEndProc() { 224 EnsureValidFrame(); 225 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 226 EmitCFIEndProcImpl(*CurFrame); 227 } 228 229 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) { 230 } 231 232 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) { 233 Frame.End = getContext().CreateTempSymbol(); 234 EmitLabel(Frame.End); 235 } 236 237 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { 238 EnsureValidFrame(); 239 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 240 MCSymbol *Label = getContext().CreateTempSymbol(); 241 EmitLabel(Label); 242 MachineLocation Dest(MachineLocation::VirtualFP); 243 MachineLocation Source(Register, -Offset); 244 MCCFIInstruction Instruction(Label, Dest, Source); 245 CurFrame->Instructions.push_back(Instruction); 246 } 247 248 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { 249 EnsureValidFrame(); 250 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 251 MCSymbol *Label = getContext().CreateTempSymbol(); 252 EmitLabel(Label); 253 MachineLocation Dest(MachineLocation::VirtualFP); 254 MachineLocation Source(MachineLocation::VirtualFP, -Offset); 255 MCCFIInstruction Instruction(Label, Dest, Source); 256 CurFrame->Instructions.push_back(Instruction); 257 } 258 259 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { 260 EnsureValidFrame(); 261 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 262 MCSymbol *Label = getContext().CreateTempSymbol(); 263 EmitLabel(Label); 264 MachineLocation Dest(MachineLocation::VirtualFP); 265 MachineLocation Source(MachineLocation::VirtualFP, Adjustment); 266 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 267 CurFrame->Instructions.push_back(Instruction); 268 } 269 270 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { 271 EnsureValidFrame(); 272 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 273 MCSymbol *Label = getContext().CreateTempSymbol(); 274 EmitLabel(Label); 275 MachineLocation Dest(Register); 276 MachineLocation Source(MachineLocation::VirtualFP); 277 MCCFIInstruction Instruction(Label, Dest, Source); 278 CurFrame->Instructions.push_back(Instruction); 279 } 280 281 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { 282 EnsureValidFrame(); 283 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 284 MCSymbol *Label = getContext().CreateTempSymbol(); 285 EmitLabel(Label); 286 MachineLocation Dest(Register, Offset); 287 MachineLocation Source(Register, Offset); 288 MCCFIInstruction Instruction(Label, Dest, Source); 289 CurFrame->Instructions.push_back(Instruction); 290 } 291 292 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { 293 EnsureValidFrame(); 294 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 295 MCSymbol *Label = getContext().CreateTempSymbol(); 296 EmitLabel(Label); 297 MachineLocation Dest(Register, Offset); 298 MachineLocation Source(Register, Offset); 299 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 300 CurFrame->Instructions.push_back(Instruction); 301 } 302 303 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, 304 unsigned Encoding) { 305 EnsureValidFrame(); 306 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 307 CurFrame->Personality = Sym; 308 CurFrame->PersonalityEncoding = Encoding; 309 } 310 311 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { 312 EnsureValidFrame(); 313 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 314 CurFrame->Lsda = Sym; 315 CurFrame->LsdaEncoding = Encoding; 316 } 317 318 void MCStreamer::EmitCFIRememberState() { 319 EnsureValidFrame(); 320 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 321 MCSymbol *Label = getContext().CreateTempSymbol(); 322 EmitLabel(Label); 323 MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label); 324 CurFrame->Instructions.push_back(Instruction); 325 } 326 327 void MCStreamer::EmitCFIRestoreState() { 328 // FIXME: Error if there is no matching cfi_remember_state. 329 EnsureValidFrame(); 330 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 331 MCSymbol *Label = getContext().CreateTempSymbol(); 332 EmitLabel(Label); 333 MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label); 334 CurFrame->Instructions.push_back(Instruction); 335 } 336 337 void MCStreamer::EmitCFISameValue(int64_t Register) { 338 EnsureValidFrame(); 339 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 340 MCSymbol *Label = getContext().CreateTempSymbol(); 341 EmitLabel(Label); 342 MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); 343 CurFrame->Instructions.push_back(Instruction); 344 } 345 346 void MCStreamer::EmitCFIRestore(int64_t Register) { 347 EnsureValidFrame(); 348 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 349 MCSymbol *Label = getContext().CreateTempSymbol(); 350 EmitLabel(Label); 351 MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register); 352 CurFrame->Instructions.push_back(Instruction); 353 } 354 355 void MCStreamer::EmitCFIEscape(StringRef Values) { 356 EnsureValidFrame(); 357 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 358 MCSymbol *Label = getContext().CreateTempSymbol(); 359 EmitLabel(Label); 360 MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values); 361 CurFrame->Instructions.push_back(Instruction); 362 } 363 364 void MCStreamer::EmitCFISignalFrame() { 365 EnsureValidFrame(); 366 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 367 CurFrame->IsSignalFrame = true; 368 } 369 370 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { 371 W64UnwindInfos.push_back(Frame); 372 CurrentW64UnwindInfo = W64UnwindInfos.back(); 373 } 374 375 void MCStreamer::EnsureValidW64UnwindInfo() { 376 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 377 if (!CurFrame || CurFrame->End) 378 report_fatal_error("No open Win64 EH frame function!"); 379 } 380 381 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) { 382 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 383 if (CurFrame && !CurFrame->End) 384 report_fatal_error("Starting a function before ending the previous one!"); 385 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; 386 Frame->Begin = getContext().CreateTempSymbol(); 387 Frame->Function = Symbol; 388 EmitLabel(Frame->Begin); 389 setCurrentW64UnwindInfo(Frame); 390 } 391 392 void MCStreamer::EmitWin64EHEndProc() { 393 EnsureValidW64UnwindInfo(); 394 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 395 if (CurFrame->ChainedParent) 396 report_fatal_error("Not all chained regions terminated!"); 397 CurFrame->End = getContext().CreateTempSymbol(); 398 EmitLabel(CurFrame->End); 399 } 400 401 void MCStreamer::EmitWin64EHStartChained() { 402 EnsureValidW64UnwindInfo(); 403 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; 404 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 405 Frame->Begin = getContext().CreateTempSymbol(); 406 Frame->Function = CurFrame->Function; 407 Frame->ChainedParent = CurFrame; 408 EmitLabel(Frame->Begin); 409 setCurrentW64UnwindInfo(Frame); 410 } 411 412 void MCStreamer::EmitWin64EHEndChained() { 413 EnsureValidW64UnwindInfo(); 414 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 415 if (!CurFrame->ChainedParent) 416 report_fatal_error("End of a chained region outside a chained region!"); 417 CurFrame->End = getContext().CreateTempSymbol(); 418 EmitLabel(CurFrame->End); 419 CurrentW64UnwindInfo = CurFrame->ChainedParent; 420 } 421 422 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind, 423 bool Except) { 424 EnsureValidW64UnwindInfo(); 425 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 426 if (CurFrame->ChainedParent) 427 report_fatal_error("Chained unwind areas can't have handlers!"); 428 CurFrame->ExceptionHandler = Sym; 429 if (!Except && !Unwind) 430 report_fatal_error("Don't know what kind of handler this is!"); 431 if (Unwind) 432 CurFrame->HandlesUnwind = true; 433 if (Except) 434 CurFrame->HandlesExceptions = true; 435 } 436 437 void MCStreamer::EmitWin64EHHandlerData() { 438 EnsureValidW64UnwindInfo(); 439 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 440 if (CurFrame->ChainedParent) 441 report_fatal_error("Chained unwind areas can't have handlers!"); 442 } 443 444 void MCStreamer::EmitWin64EHPushReg(unsigned Register) { 445 EnsureValidW64UnwindInfo(); 446 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 447 MCSymbol *Label = getContext().CreateTempSymbol(); 448 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register); 449 EmitLabel(Label); 450 CurFrame->Instructions.push_back(Inst); 451 } 452 453 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) { 454 EnsureValidW64UnwindInfo(); 455 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 456 if (CurFrame->LastFrameInst >= 0) 457 report_fatal_error("Frame register and offset already specified!"); 458 if (Offset & 0x0F) 459 report_fatal_error("Misaligned frame pointer offset!"); 460 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, NULL, Register, Offset); 461 CurFrame->LastFrameInst = CurFrame->Instructions.size(); 462 CurFrame->Instructions.push_back(Inst); 463 } 464 465 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) { 466 EnsureValidW64UnwindInfo(); 467 if (Size & 7) 468 report_fatal_error("Misaligned stack allocation!"); 469 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 470 MCSymbol *Label = getContext().CreateTempSymbol(); 471 MCWin64EHInstruction Inst(Label, Size); 472 EmitLabel(Label); 473 CurFrame->Instructions.push_back(Inst); 474 } 475 476 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) { 477 EnsureValidW64UnwindInfo(); 478 if (Offset & 7) 479 report_fatal_error("Misaligned saved register offset!"); 480 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 481 MCSymbol *Label = getContext().CreateTempSymbol(); 482 MCWin64EHInstruction Inst( 483 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol, 484 Label, Register, Offset); 485 EmitLabel(Label); 486 CurFrame->Instructions.push_back(Inst); 487 } 488 489 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) { 490 EnsureValidW64UnwindInfo(); 491 if (Offset & 0x0F) 492 report_fatal_error("Misaligned saved vector register offset!"); 493 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 494 MCSymbol *Label = getContext().CreateTempSymbol(); 495 MCWin64EHInstruction Inst( 496 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128, 497 Label, Register, Offset); 498 EmitLabel(Label); 499 CurFrame->Instructions.push_back(Inst); 500 } 501 502 void MCStreamer::EmitWin64EHPushFrame(bool Code) { 503 EnsureValidW64UnwindInfo(); 504 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 505 if (CurFrame->Instructions.size() > 0) 506 report_fatal_error("If present, PushMachFrame must be the first UOP"); 507 MCSymbol *Label = getContext().CreateTempSymbol(); 508 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code); 509 EmitLabel(Label); 510 CurFrame->Instructions.push_back(Inst); 511 } 512 513 void MCStreamer::EmitWin64EHEndProlog() { 514 EnsureValidW64UnwindInfo(); 515 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 516 CurFrame->PrologEnd = getContext().CreateTempSymbol(); 517 EmitLabel(CurFrame->PrologEnd); 518 } 519 520 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { 521 llvm_unreachable("This file format doesn't support this directive"); 522 } 523 524 void MCStreamer::EmitFnStart() { 525 errs() << "Not implemented yet\n"; 526 abort(); 527 } 528 529 void MCStreamer::EmitFnEnd() { 530 errs() << "Not implemented yet\n"; 531 abort(); 532 } 533 534 void MCStreamer::EmitCantUnwind() { 535 errs() << "Not implemented yet\n"; 536 abort(); 537 } 538 539 void MCStreamer::EmitHandlerData() { 540 errs() << "Not implemented yet\n"; 541 abort(); 542 } 543 544 void MCStreamer::EmitPersonality(const MCSymbol *Personality) { 545 errs() << "Not implemented yet\n"; 546 abort(); 547 } 548 549 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { 550 errs() << "Not implemented yet\n"; 551 abort(); 552 } 553 554 void MCStreamer::EmitPad(int64_t Offset) { 555 errs() << "Not implemented yet\n"; 556 abort(); 557 } 558 559 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { 560 errs() << "Not implemented yet\n"; 561 abort(); 562 } 563 564 /// EmitRawText - If this file is backed by an assembly streamer, this dumps 565 /// the specified string in the output .s file. This capability is 566 /// indicated by the hasRawTextSupport() predicate. 567 void MCStreamer::EmitRawText(StringRef String) { 568 errs() << "EmitRawText called on an MCStreamer that doesn't support it, " 569 " something must not be fully mc'ized\n"; 570 abort(); 571 } 572 573 void MCStreamer::EmitRawText(const Twine &T) { 574 SmallString<128> Str; 575 T.toVector(Str); 576 EmitRawText(Str.str()); 577 } 578 579 void MCStreamer::EmitFrames(bool usingCFI) { 580 if (!getNumFrameInfos()) 581 return; 582 583 if (EmitEHFrame) 584 MCDwarfFrameEmitter::Emit(*this, usingCFI, true); 585 586 if (EmitDebugFrame) 587 MCDwarfFrameEmitter::Emit(*this, usingCFI, false); 588 } 589 590 void MCStreamer::EmitW64Tables() { 591 if (!getNumW64UnwindInfos()) 592 return; 593 594 MCWin64EHUnwindEmitter::Emit(*this); 595 } 596 597 void MCStreamer::Finish() { 598 if (!FrameInfos.empty() && !FrameInfos.back().End) 599 report_fatal_error("Unfinished frame!"); 600 601 FinishImpl(); 602 } 603