MCStreamer.cpp revision 61558aaf4f924fd44fd2f275fcb7ab7199ede304
10a248bf714f18b1cdcda5d7b811303c232d6e885Daniel Dunbar//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===// 20a248bf714f18b1cdcda5d7b811303c232d6e885Daniel Dunbar// 30a248bf714f18b1cdcda5d7b811303c232d6e885Daniel Dunbar// The LLVM Compiler Infrastructure 40a248bf714f18b1cdcda5d7b811303c232d6e885Daniel Dunbar// 52a7d731828ab87bba42f7ecac8db509646cd2cddBob Wilson// This file is distributed under the University of Illinois Open Source 6b4f6095bae5edfe9d6cabfe4802e6f6187e073f2Nick Lewycky// License. See LICENSE.TXT for details. 7874f021bc16aaf4619fd818da150f1b63e408c80Daniel Dunbar// 8bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen//===----------------------------------------------------------------------===// 9bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen 10bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/MC/MCAsmInfo.h" 11bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/MC/MCContext.h" 12bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/MC/MCStreamer.h" 135371aa2a1c9a4eeecffdb9ab7b2175732e49475bErick Tryzelaar#include "llvm/MC/MCExpr.h" 145371aa2a1c9a4eeecffdb9ab7b2175732e49475bErick Tryzelaar#include "llvm/MC/MCObjectWriter.h" 15bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/MC/MCSymbol.h" 16bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/Support/ErrorHandling.h" 17bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/Support/raw_ostream.h" 18bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include "llvm/ADT/SmallString.h" 195371aa2a1c9a4eeecffdb9ab7b2175732e49475bErick Tryzelaar#include "llvm/ADT/Twine.h" 20bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen#include <cstdlib> 21bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksenusing namespace llvm; 22bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen 23bbc6597f02d108f32b5bdc7711cc67386196017bGordon HenriksenMCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), EmitEHFrame(true), 24bbc6597f02d108f32b5bdc7711cc67386196017bGordon Henriksen EmitDebugFrame(false) { 25da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCSection *section = NULL; 26da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen SectionStack.push_back(std::make_pair(section, section)); 27da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen} 28da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 295371aa2a1c9a4eeecffdb9ab7b2175732e49475bErick TryzelaarMCStreamer::~MCStreamer() { 30da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen} 31da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 327a653cb24d4dda283d34c984e81514ac1547796eGordon Henriksenconst MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, 33da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCSymbol *A, 34da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCSymbol *B) { 35da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None; 36da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCExpr *ARef = 37da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen MCSymbolRefExpr::Create(A, Variant, Context); 38da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCExpr *BRef = 39da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen MCSymbolRefExpr::Create(B, Variant, Context); 40da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCExpr *AddrDelta = 41da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context); 42da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen return AddrDelta; 43da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen} 44da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 45da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksenconst MCExpr *MCStreamer::ForceExpAbs(MCStreamer *Streamer, 4616609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar MCContext &Context, const MCExpr* Expr) { 47da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen if (Context.getAsmInfo().hasAggressiveSymbolFolding()) 48da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen return Expr; 4916609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar 5016609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar MCSymbol *ABS = Context.CreateTempSymbol(); 51da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen Streamer->EmitAssignment(ABS, Expr); 52da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen return MCSymbolRefExpr::Create(ABS, Context); 53da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen} 54da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 5516609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaarraw_ostream &MCStreamer::GetCommentOS() { 56da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen // By default, discard comments. 57da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen return nulls(); 58da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen} 59da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 60da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksenvoid MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, 61da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen const MCSymbol *Label, int PointerSize) { 62da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen // emit the sequence to set the address 63da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen EmitIntValue(dwarf::DW_LNS_extended_op, 1); 64da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen EmitULEB128IntValue(PointerSize + 1); 6516609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar EmitIntValue(dwarf::DW_LNE_set_address, 1); 66da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen EmitSymbolValue(Label, PointerSize); 67da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 68da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen // emit the sequence for the LineDelta (from 1) and a zero address delta. 6916609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar MCDwarfLineAddr::Emit(this, LineDelta, 0); 7016609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar} 71da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen 72da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen/// EmitIntValue - Special case of EmitValue that avoids the client having to 73da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen/// pass in a MCExpr for constant integers. 74da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksenvoid MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 7516609f3c5c26ba34603ae0d7ebab86fb11a72722Erick Tryzelaar unsigned AddrSpace) { 76da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen assert(Size <= 8 && "Invalid size"); 77da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && 78da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen "Invalid size"); 79da1435f86ebc9886dd7704294e01d192d79e069cGordon Henriksen char buf[8]; 80 // FIXME: Endianness assumption. 81 for (unsigned i = 0; i != Size; ++i) 82 buf[i] = uint8_t(Value >> (i * 8)); 83 EmitBytes(StringRef(buf, Size), AddrSpace); 84} 85 86/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the 87/// client having to pass in a MCExpr for constant integers. 88void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace) { 89 SmallString<32> Tmp; 90 raw_svector_ostream OSE(Tmp); 91 MCObjectWriter::EncodeULEB128(Value, OSE); 92 EmitBytes(OSE.str(), AddrSpace); 93} 94 95/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the 96/// client having to pass in a MCExpr for constant integers. 97void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { 98 SmallString<32> Tmp; 99 raw_svector_ostream OSE(Tmp); 100 MCObjectWriter::EncodeSLEB128(Value, OSE); 101 EmitBytes(OSE.str(), AddrSpace); 102} 103 104void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, 105 unsigned AddrSpace) { 106 if (getContext().getAsmInfo().hasAggressiveSymbolFolding()) { 107 EmitValue(Value, Size, AddrSpace); 108 return; 109 } 110 MCSymbol *ABS = getContext().CreateTempSymbol(); 111 EmitAssignment(ABS, Value); 112 EmitSymbolValue(ABS, Size, AddrSpace); 113} 114 115 116void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, 117 unsigned AddrSpace) { 118 EmitValueImpl(Value, Size, AddrSpace); 119} 120 121void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 122 unsigned AddrSpace) { 123 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, 124 AddrSpace); 125} 126 127void 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'. 133void 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 140bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, 141 StringRef Filename) { 142 return getContext().GetDwarfFile(Filename, FileNo) == 0; 143} 144 145void 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 154MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { 155 if (FrameInfos.empty()) 156 return NULL; 157 return &FrameInfos.back(); 158} 159 160void MCStreamer::EnsureValidFrame() { 161 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 162 if (!CurFrame || CurFrame->End) 163 report_fatal_error("No open frame"); 164} 165 166void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, 167 MCSymbol *EHSymbol) { 168} 169 170void 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 180void MCStreamer::EmitCFISections(bool EH, bool Debug) { 181 assert(EH || Debug); 182 EmitEHFrame = EH; 183 EmitDebugFrame = Debug; 184} 185 186void MCStreamer::EmitCFIStartProc() { 187 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 188 if (CurFrame && !CurFrame->End) 189 report_fatal_error("Starting a frame before finishing the previous one!"); 190 MCDwarfFrameInfo Frame; 191 Frame.Begin = getContext().CreateTempSymbol(); 192 Frame.Function = LastNonPrivate; 193 EmitLabel(Frame.Begin); 194 FrameInfos.push_back(Frame); 195} 196 197void MCStreamer::EmitCFIEndProc() { 198 EnsureValidFrame(); 199 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 200 CurFrame->End = getContext().CreateTempSymbol(); 201 EmitLabel(CurFrame->End); 202} 203 204void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { 205 EnsureValidFrame(); 206 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 207 MCSymbol *Label = getContext().CreateTempSymbol(); 208 EmitLabel(Label); 209 MachineLocation Dest(MachineLocation::VirtualFP); 210 MachineLocation Source(Register, -Offset); 211 MCCFIInstruction Instruction(Label, Dest, Source); 212 CurFrame->Instructions.push_back(Instruction); 213} 214 215void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { 216 EnsureValidFrame(); 217 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 218 MCSymbol *Label = getContext().CreateTempSymbol(); 219 EmitLabel(Label); 220 MachineLocation Dest(MachineLocation::VirtualFP); 221 MachineLocation Source(MachineLocation::VirtualFP, -Offset); 222 MCCFIInstruction Instruction(Label, Dest, Source); 223 CurFrame->Instructions.push_back(Instruction); 224} 225 226void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { 227 EnsureValidFrame(); 228 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 229 MCSymbol *Label = getContext().CreateTempSymbol(); 230 EmitLabel(Label); 231 MachineLocation Dest(MachineLocation::VirtualFP); 232 MachineLocation Source(MachineLocation::VirtualFP, Adjustment); 233 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 234 CurFrame->Instructions.push_back(Instruction); 235} 236 237void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { 238 EnsureValidFrame(); 239 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 240 MCSymbol *Label = getContext().CreateTempSymbol(); 241 EmitLabel(Label); 242 MachineLocation Dest(Register); 243 MachineLocation Source(MachineLocation::VirtualFP); 244 MCCFIInstruction Instruction(Label, Dest, Source); 245 CurFrame->Instructions.push_back(Instruction); 246} 247 248void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { 249 EnsureValidFrame(); 250 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 251 MCSymbol *Label = getContext().CreateTempSymbol(); 252 EmitLabel(Label); 253 MachineLocation Dest(Register, Offset); 254 MachineLocation Source(Register, Offset); 255 MCCFIInstruction Instruction(Label, Dest, Source); 256 CurFrame->Instructions.push_back(Instruction); 257} 258 259void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { 260 EnsureValidFrame(); 261 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 262 MCSymbol *Label = getContext().CreateTempSymbol(); 263 EmitLabel(Label); 264 MachineLocation Dest(Register, Offset); 265 MachineLocation Source(Register, Offset); 266 MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 267 CurFrame->Instructions.push_back(Instruction); 268} 269 270void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, 271 unsigned Encoding) { 272 EnsureValidFrame(); 273 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 274 CurFrame->Personality = Sym; 275 CurFrame->PersonalityEncoding = Encoding; 276} 277 278void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { 279 EnsureValidFrame(); 280 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 281 CurFrame->Lsda = Sym; 282 CurFrame->LsdaEncoding = Encoding; 283} 284 285void MCStreamer::EmitCFIRememberState() { 286 EnsureValidFrame(); 287 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 288 MCSymbol *Label = getContext().CreateTempSymbol(); 289 EmitLabel(Label); 290 MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label); 291 CurFrame->Instructions.push_back(Instruction); 292} 293 294void MCStreamer::EmitCFIRestoreState() { 295 // FIXME: Error if there is no matching cfi_remember_state. 296 EnsureValidFrame(); 297 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 298 MCSymbol *Label = getContext().CreateTempSymbol(); 299 EmitLabel(Label); 300 MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label); 301 CurFrame->Instructions.push_back(Instruction); 302} 303 304void MCStreamer::EmitCFISameValue(int64_t Register) { 305 EnsureValidFrame(); 306 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 307 MCSymbol *Label = getContext().CreateTempSymbol(); 308 EmitLabel(Label); 309 MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); 310 CurFrame->Instructions.push_back(Instruction); 311} 312 313void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { 314 W64UnwindInfos.push_back(*Frame); 315 CurrentW64UnwindInfo = &W64UnwindInfos.back(); 316} 317 318void MCStreamer::EnsureValidW64UnwindInfo() { 319 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 320 if (!CurFrame || CurFrame->End) 321 report_fatal_error("No open Win64 EH frame function!"); 322} 323 324void MCStreamer::EmitWin64EHStartProc(MCSymbol *Symbol) { 325 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 326 if (CurFrame && !CurFrame->End) 327 report_fatal_error("Starting a function before ending the previous one!"); 328 MCWin64EHUnwindInfo Frame; 329 Frame.Begin = getContext().CreateTempSymbol(); 330 Frame.Function = Symbol; 331 EmitLabel(Frame.Begin); 332 setCurrentW64UnwindInfo(&Frame); 333} 334 335void MCStreamer::EmitWin64EHEndProc() { 336 EnsureValidW64UnwindInfo(); 337 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 338 if (CurFrame->ChainedParent) 339 report_fatal_error("Not all chained regions terminated!"); 340 CurFrame->End = getContext().CreateTempSymbol(); 341 EmitLabel(CurFrame->End); 342} 343 344void MCStreamer::EmitWin64EHStartChained() { 345 EnsureValidW64UnwindInfo(); 346 MCWin64EHUnwindInfo Frame; 347 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 348 Frame.Begin = getContext().CreateTempSymbol(); 349 Frame.Function = CurFrame->Function; 350 Frame.ChainedParent = CurFrame; 351 EmitLabel(Frame.Begin); 352 setCurrentW64UnwindInfo(&Frame); 353} 354 355void MCStreamer::EmitWin64EHEndChained() { 356 EnsureValidW64UnwindInfo(); 357 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 358 if (!CurFrame->ChainedParent) 359 report_fatal_error("End of a chained region outside a chained region!"); 360 CurFrame->End = getContext().CreateTempSymbol(); 361 EmitLabel(CurFrame->End); 362 CurrentW64UnwindInfo = CurFrame->ChainedParent; 363} 364 365void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind, 366 bool Except) { 367 EnsureValidW64UnwindInfo(); 368 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 369 CurFrame->ExceptionHandler = Sym; 370 if (Unwind) 371 CurFrame->UnwindOnly = true; 372 else if (!Except) 373 report_fatal_error("Don't know what kind of handler this is!"); 374} 375 376void MCStreamer::EmitWin64EHHandlerData() { 377 errs() << "Not implemented yet\n"; 378 abort(); 379} 380 381void MCStreamer::EmitWin64EHPushReg(unsigned Register) { 382 EnsureValidW64UnwindInfo(); 383 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 384 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Register); 385 CurFrame->Instructions.push_back(Inst); 386} 387 388void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) { 389 EnsureValidW64UnwindInfo(); 390 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 391 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Register, Offset); 392 CurFrame->Instructions.push_back(Inst); 393} 394 395void MCStreamer::EmitWin64EHAllocStack(unsigned Size) { 396 EnsureValidW64UnwindInfo(); 397 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 398 MCWin64EHInstruction Inst(Size); 399 CurFrame->Instructions.push_back(Inst); 400} 401 402void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) { 403 EnsureValidW64UnwindInfo(); 404 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 405 MCWin64EHInstruction Inst( 406 Offset > 0xFFFF ? Win64EH::UOP_SaveNonVol : Win64EH::UOP_SaveNonVolBig, 407 Register, Offset); 408 CurFrame->Instructions.push_back(Inst); 409} 410 411void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) { 412 EnsureValidW64UnwindInfo(); 413 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 414 MCWin64EHInstruction Inst( 415 Offset > 0xFFFF ? Win64EH::UOP_SaveXMM128 : Win64EH::UOP_SaveXMM128Big, 416 Register, Offset); 417 CurFrame->Instructions.push_back(Inst); 418} 419 420void MCStreamer::EmitWin64EHPushFrame(bool Code) { 421 EnsureValidW64UnwindInfo(); 422 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 423 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Code); 424 CurFrame->Instructions.push_back(Inst); 425} 426 427void MCStreamer::EmitWin64EHEndProlog() { 428 EnsureValidW64UnwindInfo(); 429 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 430 CurFrame->PrologEnd = getContext().CreateTempSymbol(); 431 EmitLabel(CurFrame->PrologEnd); 432} 433 434void MCStreamer::EmitFnStart() { 435 errs() << "Not implemented yet\n"; 436 abort(); 437} 438 439void MCStreamer::EmitFnEnd() { 440 errs() << "Not implemented yet\n"; 441 abort(); 442} 443 444void MCStreamer::EmitCantUnwind() { 445 errs() << "Not implemented yet\n"; 446 abort(); 447} 448 449void MCStreamer::EmitHandlerData() { 450 errs() << "Not implemented yet\n"; 451 abort(); 452} 453 454void MCStreamer::EmitPersonality(const MCSymbol *Personality) { 455 errs() << "Not implemented yet\n"; 456 abort(); 457} 458 459void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { 460 errs() << "Not implemented yet\n"; 461 abort(); 462} 463 464void MCStreamer::EmitPad(int64_t Offset) { 465 errs() << "Not implemented yet\n"; 466 abort(); 467} 468 469void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { 470 errs() << "Not implemented yet\n"; 471 abort(); 472} 473 474/// EmitRawText - If this file is backed by an assembly streamer, this dumps 475/// the specified string in the output .s file. This capability is 476/// indicated by the hasRawTextSupport() predicate. 477void MCStreamer::EmitRawText(StringRef String) { 478 errs() << "EmitRawText called on an MCStreamer that doesn't support it, " 479 " something must not be fully mc'ized\n"; 480 abort(); 481} 482 483void MCStreamer::EmitRawText(const Twine &T) { 484 SmallString<128> Str; 485 T.toVector(Str); 486 EmitRawText(Str.str()); 487} 488 489void MCStreamer::EmitFrames(bool usingCFI) { 490 if (!getNumFrameInfos()) 491 return; 492 493 if (EmitEHFrame) 494 MCDwarfFrameEmitter::Emit(*this, usingCFI, true); 495 496 if (EmitDebugFrame) 497 MCDwarfFrameEmitter::Emit(*this, usingCFI, false); 498} 499