| //===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCStreamer.h" |
| #include "llvm/MC/MCExpr.h" |
| #include "llvm/MC/MCObjectWriter.h" |
| #include "llvm/MC/MCSymbol.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/Twine.h" |
| #include <cstdlib> |
| using namespace llvm; |
| |
| MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx), EmitEHFrame(true), |
| EmitDebugFrame(false), |
| CurrentW64UnwindInfo(0), |
| LastSymbol(0), |
| UniqueCodeBeginSuffix(0), |
| UniqueDataBeginSuffix(0) { |
| const MCSection *section = NULL; |
| SectionStack.push_back(std::make_pair(section, section)); |
| } |
| |
| MCStreamer::~MCStreamer() { |
| for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i) |
| delete W64UnwindInfos[i]; |
| } |
| |
| const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, |
| const MCSymbol *A, |
| const MCSymbol *B) { |
| MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None; |
| const MCExpr *ARef = |
| MCSymbolRefExpr::Create(A, Variant, Context); |
| const MCExpr *BRef = |
| MCSymbolRefExpr::Create(B, Variant, Context); |
| const MCExpr *AddrDelta = |
| MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context); |
| return AddrDelta; |
| } |
| |
| const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) { |
| if (Context.getAsmInfo().hasAggressiveSymbolFolding() || |
| isa<MCSymbolRefExpr>(Expr)) |
| return Expr; |
| |
| MCSymbol *ABS = Context.CreateTempSymbol(); |
| EmitAssignment(ABS, Expr); |
| return MCSymbolRefExpr::Create(ABS, Context); |
| } |
| |
| raw_ostream &MCStreamer::GetCommentOS() { |
| // By default, discard comments. |
| return nulls(); |
| } |
| |
| void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, |
| const MCSymbol *Label, int PointerSize) { |
| // emit the sequence to set the address |
| EmitIntValue(dwarf::DW_LNS_extended_op, 1); |
| EmitULEB128IntValue(PointerSize + 1); |
| EmitIntValue(dwarf::DW_LNE_set_address, 1); |
| EmitSymbolValue(Label, PointerSize); |
| |
| // emit the sequence for the LineDelta (from 1) and a zero address delta. |
| MCDwarfLineAddr::Emit(this, LineDelta, 0); |
| } |
| |
| /// EmitIntValue - Special case of EmitValue that avoids the client having to |
| /// pass in a MCExpr for constant integers. |
| void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, |
| unsigned AddrSpace) { |
| assert(Size <= 8 && "Invalid size"); |
| assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && |
| "Invalid size"); |
| char buf[8]; |
| const bool isLittleEndian = Context.getAsmInfo().isLittleEndian(); |
| for (unsigned i = 0; i != Size; ++i) { |
| unsigned index = isLittleEndian ? i : (Size - i - 1); |
| buf[i] = uint8_t(Value >> (index * 8)); |
| } |
| EmitBytes(StringRef(buf, Size), AddrSpace); |
| } |
| |
| /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the |
| /// client having to pass in a MCExpr for constant integers. |
| void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace, |
| unsigned Padding) { |
| SmallString<32> Tmp; |
| raw_svector_ostream OSE(Tmp); |
| MCObjectWriter::EncodeULEB128(Value, OSE, Padding); |
| EmitBytes(OSE.str(), AddrSpace); |
| } |
| |
| /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the |
| /// client having to pass in a MCExpr for constant integers. |
| void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { |
| SmallString<32> Tmp; |
| raw_svector_ostream OSE(Tmp); |
| MCObjectWriter::EncodeSLEB128(Value, OSE); |
| EmitBytes(OSE.str(), AddrSpace); |
| } |
| |
| void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, |
| unsigned AddrSpace) { |
| const MCExpr *ABS = ForceExpAbs(Value); |
| EmitValue(ABS, Size, AddrSpace); |
| } |
| |
| |
| void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, |
| unsigned AddrSpace) { |
| EmitValueImpl(Value, Size, AddrSpace); |
| } |
| |
| void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, |
| unsigned AddrSpace) { |
| EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, |
| AddrSpace); |
| } |
| |
| void MCStreamer::EmitGPRel32Value(const MCExpr *Value) { |
| report_fatal_error("unsupported directive in streamer"); |
| } |
| |
| /// EmitFill - Emit NumBytes bytes worth of the value specified by |
| /// FillValue. This implements directives such as '.space'. |
| void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, |
| unsigned AddrSpace) { |
| const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); |
| for (uint64_t i = 0, e = NumBytes; i != e; ++i) |
| EmitValue(E, 1, AddrSpace); |
| } |
| |
| bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, |
| StringRef Directory, |
| StringRef Filename) { |
| return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0; |
| } |
| |
| void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, |
| unsigned Column, unsigned Flags, |
| unsigned Isa, |
| unsigned Discriminator, |
| StringRef FileName) { |
| getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa, |
| Discriminator); |
| } |
| |
| MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { |
| if (FrameInfos.empty()) |
| return NULL; |
| return &FrameInfos.back(); |
| } |
| |
| void MCStreamer::EnsureValidFrame() { |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| if (!CurFrame || CurFrame->End) |
| report_fatal_error("No open frame"); |
| } |
| |
| void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, |
| MCSymbol *EHSymbol) { |
| } |
| |
| void MCStreamer::EmitLabel(MCSymbol *Symbol) { |
| assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); |
| assert(getCurrentSection() && "Cannot emit before setting section!"); |
| Symbol->setSection(*getCurrentSection()); |
| LastSymbol = Symbol; |
| } |
| |
| void MCStreamer::EmitDataRegion() { |
| if (RegionIndicator == Data) return; |
| |
| MCContext &Context = getContext(); |
| const MCAsmInfo &MAI = Context.getAsmInfo(); |
| if (!MAI.getSupportsDataRegions()) return; |
| |
| // Generate a unique symbol name. |
| MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getDataBeginLabelName() + |
| Twine(UniqueDataBeginSuffix++)); |
| EmitLabel(NewSym); |
| |
| RegionIndicator = Data; |
| } |
| |
| void MCStreamer::EmitCodeRegion() { |
| if (RegionIndicator == Code) return; |
| |
| MCContext &Context = getContext(); |
| const MCAsmInfo &MAI = Context.getAsmInfo(); |
| if (!MAI.getSupportsDataRegions()) return; |
| |
| // Generate a unique symbol name. |
| MCSymbol *NewSym = Context.GetOrCreateSymbol(MAI.getCodeBeginLabelName() + |
| Twine(UniqueCodeBeginSuffix++)); |
| EmitLabel(NewSym); |
| |
| RegionIndicator = Code; |
| } |
| |
| void MCStreamer::EmitJumpTable8Region() { |
| if (RegionIndicator == JumpTable8) return; |
| |
| MCContext &Context = getContext(); |
| const MCAsmInfo &MAI = Context.getAsmInfo(); |
| if (!MAI.getSupportsDataRegions()) return; |
| |
| // Generate a unique symbol name. |
| MCSymbol *NewSym = |
| Context.GetOrCreateSymbol(MAI.getJumpTable8BeginLabelName() + |
| Twine(UniqueDataBeginSuffix++)); |
| EmitLabel(NewSym); |
| |
| RegionIndicator = JumpTable8; |
| } |
| |
| void MCStreamer::EmitJumpTable16Region() { |
| if (RegionIndicator == JumpTable16) return; |
| |
| MCContext &Context = getContext(); |
| const MCAsmInfo &MAI = Context.getAsmInfo(); |
| if (!MAI.getSupportsDataRegions()) return; |
| |
| // Generate a unique symbol name. |
| MCSymbol *NewSym = |
| Context.GetOrCreateSymbol(MAI.getJumpTable16BeginLabelName() + |
| Twine(UniqueDataBeginSuffix++)); |
| EmitLabel(NewSym); |
| |
| RegionIndicator = JumpTable16; |
| } |
| |
| |
| void MCStreamer::EmitJumpTable32Region() { |
| if (RegionIndicator == JumpTable32) return; |
| |
| MCContext &Context = getContext(); |
| const MCAsmInfo &MAI = Context.getAsmInfo(); |
| if (!MAI.getSupportsDataRegions()) return; |
| |
| // Generate a unique symbol name. |
| MCSymbol *NewSym = |
| Context.GetOrCreateSymbol(MAI.getJumpTable32BeginLabelName() + |
| Twine(UniqueDataBeginSuffix++)); |
| EmitLabel(NewSym); |
| |
| RegionIndicator = JumpTable32; |
| } |
| |
| void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| CurFrame->CompactUnwindEncoding = CompactUnwindEncoding; |
| } |
| |
| void MCStreamer::EmitCFISections(bool EH, bool Debug) { |
| assert(EH || Debug); |
| EmitEHFrame = EH; |
| EmitDebugFrame = Debug; |
| } |
| |
| void MCStreamer::EmitCFIStartProc() { |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| if (CurFrame && !CurFrame->End) |
| report_fatal_error("Starting a frame before finishing the previous one!"); |
| |
| MCDwarfFrameInfo Frame; |
| Frame.Function = LastSymbol; |
| |
| // If the function is externally visible, we need to create a local |
| // symbol to avoid relocations. |
| StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix(); |
| if (LastSymbol && LastSymbol->getName().startswith(Prefix)) { |
| Frame.Begin = LastSymbol; |
| } else { |
| Frame.Begin = getContext().CreateTempSymbol(); |
| EmitLabel(Frame.Begin); |
| } |
| |
| FrameInfos.push_back(Frame); |
| RegionIndicator = Code; |
| } |
| |
| void MCStreamer::EmitCFIEndProc() { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| CurFrame->End = getContext().CreateTempSymbol(); |
| EmitLabel(CurFrame->End); |
| } |
| |
| void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(MachineLocation::VirtualFP); |
| MachineLocation Source(Register, -Offset); |
| MCCFIInstruction Instruction(Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(MachineLocation::VirtualFP); |
| MachineLocation Source(MachineLocation::VirtualFP, -Offset); |
| MCCFIInstruction Instruction(Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(MachineLocation::VirtualFP); |
| MachineLocation Source(MachineLocation::VirtualFP, Adjustment); |
| MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(Register); |
| MachineLocation Source(MachineLocation::VirtualFP); |
| MCCFIInstruction Instruction(Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(Register, Offset); |
| MachineLocation Source(Register, Offset); |
| MCCFIInstruction Instruction(Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MachineLocation Dest(Register, Offset); |
| MachineLocation Source(Register, Offset); |
| MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, |
| unsigned Encoding) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| CurFrame->Personality = Sym; |
| CurFrame->PersonalityEncoding = Encoding; |
| } |
| |
| void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| CurFrame->Lsda = Sym; |
| CurFrame->LsdaEncoding = Encoding; |
| } |
| |
| void MCStreamer::EmitCFIRememberState() { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIRestoreState() { |
| // FIXME: Error if there is no matching cfi_remember_state. |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFISameValue(int64_t Register) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIRestore(int64_t Register) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::EmitCFIEscape(StringRef Values) { |
| EnsureValidFrame(); |
| MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| EmitLabel(Label); |
| MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values); |
| CurFrame->Instructions.push_back(Instruction); |
| } |
| |
| void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { |
| W64UnwindInfos.push_back(Frame); |
| CurrentW64UnwindInfo = W64UnwindInfos.back(); |
| } |
| |
| void MCStreamer::EnsureValidW64UnwindInfo() { |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (!CurFrame || CurFrame->End) |
| report_fatal_error("No open Win64 EH frame function!"); |
| } |
| |
| void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) { |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame && !CurFrame->End) |
| report_fatal_error("Starting a function before ending the previous one!"); |
| MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; |
| Frame->Begin = getContext().CreateTempSymbol(); |
| Frame->Function = Symbol; |
| EmitLabel(Frame->Begin); |
| setCurrentW64UnwindInfo(Frame); |
| } |
| |
| void MCStreamer::EmitWin64EHEndProc() { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame->ChainedParent) |
| report_fatal_error("Not all chained regions terminated!"); |
| CurFrame->End = getContext().CreateTempSymbol(); |
| EmitLabel(CurFrame->End); |
| } |
| |
| void MCStreamer::EmitWin64EHStartChained() { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| Frame->Begin = getContext().CreateTempSymbol(); |
| Frame->Function = CurFrame->Function; |
| Frame->ChainedParent = CurFrame; |
| EmitLabel(Frame->Begin); |
| setCurrentW64UnwindInfo(Frame); |
| } |
| |
| void MCStreamer::EmitWin64EHEndChained() { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (!CurFrame->ChainedParent) |
| report_fatal_error("End of a chained region outside a chained region!"); |
| CurFrame->End = getContext().CreateTempSymbol(); |
| EmitLabel(CurFrame->End); |
| CurrentW64UnwindInfo = CurFrame->ChainedParent; |
| } |
| |
| void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind, |
| bool Except) { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame->ChainedParent) |
| report_fatal_error("Chained unwind areas can't have handlers!"); |
| CurFrame->ExceptionHandler = Sym; |
| if (!Except && !Unwind) |
| report_fatal_error("Don't know what kind of handler this is!"); |
| if (Unwind) |
| CurFrame->HandlesUnwind = true; |
| if (Except) |
| CurFrame->HandlesExceptions = true; |
| } |
| |
| void MCStreamer::EmitWin64EHHandlerData() { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame->ChainedParent) |
| report_fatal_error("Chained unwind areas can't have handlers!"); |
| } |
| |
| void MCStreamer::EmitWin64EHPushReg(unsigned Register) { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register); |
| EmitLabel(Label); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame->LastFrameInst >= 0) |
| report_fatal_error("Frame register and offset already specified!"); |
| if (Offset & 0x0F) |
| report_fatal_error("Misaligned frame pointer offset!"); |
| MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, NULL, Register, Offset); |
| CurFrame->LastFrameInst = CurFrame->Instructions.size(); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHAllocStack(unsigned Size) { |
| EnsureValidW64UnwindInfo(); |
| if (Size & 7) |
| report_fatal_error("Misaligned stack allocation!"); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| MCWin64EHInstruction Inst(Label, Size); |
| EmitLabel(Label); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) { |
| EnsureValidW64UnwindInfo(); |
| if (Offset & 7) |
| report_fatal_error("Misaligned saved register offset!"); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| MCWin64EHInstruction Inst( |
| Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol, |
| Label, Register, Offset); |
| EmitLabel(Label); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) { |
| EnsureValidW64UnwindInfo(); |
| if (Offset & 0x0F) |
| report_fatal_error("Misaligned saved vector register offset!"); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| MCWin64EHInstruction Inst( |
| Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128, |
| Label, Register, Offset); |
| EmitLabel(Label); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHPushFrame(bool Code) { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| if (CurFrame->Instructions.size() > 0) |
| report_fatal_error("If present, PushMachFrame must be the first UOP"); |
| MCSymbol *Label = getContext().CreateTempSymbol(); |
| MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code); |
| EmitLabel(Label); |
| CurFrame->Instructions.push_back(Inst); |
| } |
| |
| void MCStreamer::EmitWin64EHEndProlog() { |
| EnsureValidW64UnwindInfo(); |
| MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; |
| CurFrame->PrologEnd = getContext().CreateTempSymbol(); |
| EmitLabel(CurFrame->PrologEnd); |
| } |
| |
| void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { |
| assert(0 && "This file format doesn't support this directive"); |
| } |
| |
| void MCStreamer::EmitFnStart() { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitFnEnd() { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitCantUnwind() { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitHandlerData() { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitPersonality(const MCSymbol *Personality) { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitPad(int64_t Offset) { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { |
| errs() << "Not implemented yet\n"; |
| abort(); |
| } |
| |
| /// EmitRawText - If this file is backed by an assembly streamer, this dumps |
| /// the specified string in the output .s file. This capability is |
| /// indicated by the hasRawTextSupport() predicate. |
| void MCStreamer::EmitRawText(StringRef String) { |
| errs() << "EmitRawText called on an MCStreamer that doesn't support it, " |
| " something must not be fully mc'ized\n"; |
| abort(); |
| } |
| |
| void MCStreamer::EmitRawText(const Twine &T) { |
| SmallString<128> Str; |
| T.toVector(Str); |
| EmitRawText(Str.str()); |
| } |
| |
| void MCStreamer::EmitFrames(bool usingCFI) { |
| if (!getNumFrameInfos()) |
| return; |
| |
| if (EmitEHFrame) |
| MCDwarfFrameEmitter::Emit(*this, usingCFI, true); |
| |
| if (EmitDebugFrame) |
| MCDwarfFrameEmitter::Emit(*this, usingCFI, false); |
| } |
| |
| void MCStreamer::EmitW64Tables() { |
| if (!getNumW64UnwindInfos()) |
| return; |
| |
| MCWin64EHUnwindEmitter::Emit(*this); |
| } |