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-rw-r--r--contrib/llvm/lib/MC/MCAsmStreamer.cpp1411
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diff --git a/contrib/llvm/lib/MC/MCAsmStreamer.cpp b/contrib/llvm/lib/MC/MCAsmStreamer.cpp
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+++ b/contrib/llvm/lib/MC/MCAsmStreamer.cpp
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+//===- lib/MC/MCAsmStreamer.cpp - Text Assembly Output ----------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/MC/MCAsmBackend.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFixupKindInfo.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSectionCOFF.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCSymbolELF.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Path.h"
+#include <cctype>
+
+using namespace llvm;
+
+namespace {
+
+class MCAsmStreamer final : public MCStreamer {
+ std::unique_ptr<formatted_raw_ostream> OSOwner;
+ formatted_raw_ostream &OS;
+ const MCAsmInfo *MAI;
+ std::unique_ptr<MCInstPrinter> InstPrinter;
+ std::unique_ptr<MCCodeEmitter> Emitter;
+ std::unique_ptr<MCAsmBackend> AsmBackend;
+
+ SmallString<128> CommentToEmit;
+ raw_svector_ostream CommentStream;
+
+ unsigned IsVerboseAsm : 1;
+ unsigned ShowInst : 1;
+ unsigned UseDwarfDirectory : 1;
+
+ void EmitRegisterName(int64_t Register);
+ void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) override;
+ void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override;
+
+public:
+ MCAsmStreamer(MCContext &Context, std::unique_ptr<formatted_raw_ostream> os,
+ bool isVerboseAsm, bool useDwarfDirectory,
+ MCInstPrinter *printer, MCCodeEmitter *emitter,
+ MCAsmBackend *asmbackend, bool showInst)
+ : MCStreamer(Context), OSOwner(std::move(os)), OS(*OSOwner),
+ MAI(Context.getAsmInfo()), InstPrinter(printer), Emitter(emitter),
+ AsmBackend(asmbackend), CommentStream(CommentToEmit),
+ IsVerboseAsm(isVerboseAsm), ShowInst(showInst),
+ UseDwarfDirectory(useDwarfDirectory) {
+ assert(InstPrinter);
+ if (IsVerboseAsm)
+ InstPrinter->setCommentStream(CommentStream);
+ }
+
+ inline void EmitEOL() {
+ // If we don't have any comments, just emit a \n.
+ if (!IsVerboseAsm) {
+ OS << '\n';
+ return;
+ }
+ EmitCommentsAndEOL();
+ }
+
+ void EmitSyntaxDirective() override;
+
+ void EmitCommentsAndEOL();
+
+ /// isVerboseAsm - Return true if this streamer supports verbose assembly at
+ /// all.
+ bool isVerboseAsm() const override { return IsVerboseAsm; }
+
+ /// hasRawTextSupport - We support EmitRawText.
+ bool hasRawTextSupport() const override { return true; }
+
+ /// AddComment - Add a comment that can be emitted to the generated .s
+ /// file if applicable as a QoI issue to make the output of the compiler
+ /// more readable. This only affects the MCAsmStreamer, and only when
+ /// verbose assembly output is enabled.
+ void AddComment(const Twine &T) override;
+
+ /// AddEncodingComment - Add a comment showing the encoding of an instruction.
+ void AddEncodingComment(const MCInst &Inst, const MCSubtargetInfo &);
+
+ /// GetCommentOS - Return a raw_ostream that comments can be written to.
+ /// Unlike AddComment, you are required to terminate comments with \n if you
+ /// use this method.
+ raw_ostream &GetCommentOS() override {
+ if (!IsVerboseAsm)
+ return nulls(); // Discard comments unless in verbose asm mode.
+ return CommentStream;
+ }
+
+ void emitRawComment(const Twine &T, bool TabPrefix = true) override;
+
+ /// AddBlankLine - Emit a blank line to a .s file to pretty it up.
+ void AddBlankLine() override {
+ EmitEOL();
+ }
+
+ /// @name MCStreamer Interface
+ /// @{
+
+ void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
+
+ void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) override;
+ void EmitLabel(MCSymbol *Symbol) override;
+
+ void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
+ void EmitLinkerOptions(ArrayRef<std::string> Options) override;
+ void EmitDataRegion(MCDataRegionType Kind) override;
+ void EmitVersionMin(MCVersionMinType Kind, unsigned Major, unsigned Minor,
+ unsigned Update) override;
+ void EmitThumbFunc(MCSymbol *Func) override;
+
+ void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
+ void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
+ bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
+
+ void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
+ void BeginCOFFSymbolDef(const MCSymbol *Symbol) override;
+ void EmitCOFFSymbolStorageClass(int StorageClass) override;
+ void EmitCOFFSymbolType(int Type) override;
+ void EndCOFFSymbolDef() override;
+ void EmitCOFFSafeSEH(MCSymbol const *Symbol) override;
+ void EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
+ void EmitCOFFSecRel32(MCSymbol const *Symbol) override;
+ void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) override;
+ void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override;
+
+ /// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
+ ///
+ /// @param Symbol - The common symbol to emit.
+ /// @param Size - The size of the common symbol.
+ /// @param ByteAlignment - The alignment of the common symbol in bytes.
+ void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override;
+
+ void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
+ uint64_t Size = 0, unsigned ByteAlignment = 0) override;
+
+ void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment = 0) override;
+
+ void EmitBytes(StringRef Data) override;
+
+ void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ SMLoc Loc = SMLoc()) override;
+ void EmitIntValue(uint64_t Value, unsigned Size) override;
+
+ void EmitULEB128Value(const MCExpr *Value) override;
+
+ void EmitSLEB128Value(const MCExpr *Value) override;
+
+ void EmitGPRel64Value(const MCExpr *Value) override;
+
+ void EmitGPRel32Value(const MCExpr *Value) override;
+
+
+ void EmitFill(uint64_t NumBytes, uint8_t FillValue) override;
+
+ void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
+ unsigned ValueSize = 1,
+ unsigned MaxBytesToEmit = 0) override;
+
+ void EmitCodeAlignment(unsigned ByteAlignment,
+ unsigned MaxBytesToEmit = 0) override;
+
+ void emitValueToOffset(const MCExpr *Offset,
+ unsigned char Value = 0) override;
+
+ void EmitFileDirective(StringRef Filename) override;
+ unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename,
+ unsigned CUID = 0) override;
+ void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa, unsigned Discriminator,
+ StringRef FileName) override;
+ MCSymbol *getDwarfLineTableSymbol(unsigned CUID) override;
+
+ void EmitIdent(StringRef IdentString) override;
+ void EmitCFISections(bool EH, bool Debug) override;
+ void EmitCFIDefCfa(int64_t Register, int64_t Offset) override;
+ void EmitCFIDefCfaOffset(int64_t Offset) override;
+ void EmitCFIDefCfaRegister(int64_t Register) override;
+ void EmitCFIOffset(int64_t Register, int64_t Offset) override;
+ void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding) override;
+ void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) override;
+ void EmitCFIRememberState() override;
+ void EmitCFIRestoreState() override;
+ void EmitCFISameValue(int64_t Register) override;
+ void EmitCFIRelOffset(int64_t Register, int64_t Offset) override;
+ void EmitCFIAdjustCfaOffset(int64_t Adjustment) override;
+ void EmitCFIEscape(StringRef Values) override;
+ void EmitCFIGnuArgsSize(int64_t Size) override;
+ void EmitCFISignalFrame() override;
+ void EmitCFIUndefined(int64_t Register) override;
+ void EmitCFIRegister(int64_t Register1, int64_t Register2) override;
+ void EmitCFIWindowSave() override;
+
+ void EmitWinCFIStartProc(const MCSymbol *Symbol) override;
+ void EmitWinCFIEndProc() override;
+ void EmitWinCFIStartChained() override;
+ void EmitWinCFIEndChained() override;
+ void EmitWinCFIPushReg(unsigned Register) override;
+ void EmitWinCFISetFrame(unsigned Register, unsigned Offset) override;
+ void EmitWinCFIAllocStack(unsigned Size) override;
+ void EmitWinCFISaveReg(unsigned Register, unsigned Offset) override;
+ void EmitWinCFISaveXMM(unsigned Register, unsigned Offset) override;
+ void EmitWinCFIPushFrame(bool Code) override;
+ void EmitWinCFIEndProlog() override;
+
+ void EmitWinEHHandler(const MCSymbol *Sym, bool Unwind, bool Except) override;
+ void EmitWinEHHandlerData() override;
+
+ void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
+
+ void EmitBundleAlignMode(unsigned AlignPow2) override;
+ void EmitBundleLock(bool AlignToEnd) override;
+ void EmitBundleUnlock() override;
+
+ bool EmitRelocDirective(const MCExpr &Offset, StringRef Name,
+ const MCExpr *Expr, SMLoc Loc) override;
+
+ /// 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 EmitRawTextImpl(StringRef String) override;
+
+ void FinishImpl() override;
+};
+
+} // end anonymous namespace.
+
+/// AddComment - Add a comment that can be emitted to the generated .s
+/// file if applicable as a QoI issue to make the output of the compiler
+/// more readable. This only affects the MCAsmStreamer, and only when
+/// verbose assembly output is enabled.
+void MCAsmStreamer::AddComment(const Twine &T) {
+ if (!IsVerboseAsm) return;
+
+ T.toVector(CommentToEmit);
+ // Each comment goes on its own line.
+ CommentToEmit.push_back('\n');
+}
+
+void MCAsmStreamer::EmitCommentsAndEOL() {
+ if (CommentToEmit.empty() && CommentStream.GetNumBytesInBuffer() == 0) {
+ OS << '\n';
+ return;
+ }
+
+ StringRef Comments = CommentToEmit;
+
+ assert(Comments.back() == '\n' &&
+ "Comment array not newline terminated");
+ do {
+ // Emit a line of comments.
+ OS.PadToColumn(MAI->getCommentColumn());
+ size_t Position = Comments.find('\n');
+ OS << MAI->getCommentString() << ' ' << Comments.substr(0, Position) <<'\n';
+
+ Comments = Comments.substr(Position+1);
+ } while (!Comments.empty());
+
+ CommentToEmit.clear();
+}
+
+static inline int64_t truncateToSize(int64_t Value, unsigned Bytes) {
+ assert(Bytes && "Invalid size!");
+ return Value & ((uint64_t) (int64_t) -1 >> (64 - Bytes * 8));
+}
+
+void MCAsmStreamer::emitRawComment(const Twine &T, bool TabPrefix) {
+ if (TabPrefix)
+ OS << '\t';
+ OS << MAI->getCommentString() << T;
+ EmitEOL();
+}
+
+void MCAsmStreamer::ChangeSection(MCSection *Section,
+ const MCExpr *Subsection) {
+ assert(Section && "Cannot switch to a null section!");
+ Section->PrintSwitchToSection(*MAI, OS, Subsection);
+}
+
+void MCAsmStreamer::EmitLabel(MCSymbol *Symbol) {
+ assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
+ MCStreamer::EmitLabel(Symbol);
+
+ Symbol->print(OS, MAI);
+ OS << MAI->getLabelSuffix();
+
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) {
+ StringRef str = MCLOHIdToName(Kind);
+
+#ifndef NDEBUG
+ int NbArgs = MCLOHIdToNbArgs(Kind);
+ assert(NbArgs != -1 && ((size_t)NbArgs) == Args.size() && "Malformed LOH!");
+ assert(str != "" && "Invalid LOH name");
+#endif
+
+ OS << "\t" << MCLOHDirectiveName() << " " << str << "\t";
+ bool IsFirst = true;
+ for (MCLOHArgs::const_iterator It = Args.begin(), EndIt = Args.end();
+ It != EndIt; ++It) {
+ if (!IsFirst)
+ OS << ", ";
+ IsFirst = false;
+ (*It)->print(OS, MAI);
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
+ switch (Flag) {
+ case MCAF_SyntaxUnified: OS << "\t.syntax unified"; break;
+ case MCAF_SubsectionsViaSymbols: OS << ".subsections_via_symbols"; break;
+ case MCAF_Code16: OS << '\t'<< MAI->getCode16Directive();break;
+ case MCAF_Code32: OS << '\t'<< MAI->getCode32Directive();break;
+ case MCAF_Code64: OS << '\t'<< MAI->getCode64Directive();break;
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitLinkerOptions(ArrayRef<std::string> Options) {
+ assert(!Options.empty() && "At least one option is required!");
+ OS << "\t.linker_option \"" << Options[0] << '"';
+ for (ArrayRef<std::string>::iterator it = Options.begin() + 1,
+ ie = Options.end(); it != ie; ++it) {
+ OS << ", " << '"' << *it << '"';
+ }
+ OS << "\n";
+}
+
+void MCAsmStreamer::EmitDataRegion(MCDataRegionType Kind) {
+ if (!MAI->doesSupportDataRegionDirectives())
+ return;
+ switch (Kind) {
+ case MCDR_DataRegion: OS << "\t.data_region"; break;
+ case MCDR_DataRegionJT8: OS << "\t.data_region jt8"; break;
+ case MCDR_DataRegionJT16: OS << "\t.data_region jt16"; break;
+ case MCDR_DataRegionJT32: OS << "\t.data_region jt32"; break;
+ case MCDR_DataRegionEnd: OS << "\t.end_data_region"; break;
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitVersionMin(MCVersionMinType Kind, unsigned Major,
+ unsigned Minor, unsigned Update) {
+ switch (Kind) {
+ case MCVM_WatchOSVersionMin: OS << "\t.watchos_version_min"; break;
+ case MCVM_TvOSVersionMin: OS << "\t.tvos_version_min"; break;
+ case MCVM_IOSVersionMin: OS << "\t.ios_version_min"; break;
+ case MCVM_OSXVersionMin: OS << "\t.macosx_version_min"; break;
+ }
+ OS << " " << Major << ", " << Minor;
+ if (Update)
+ OS << ", " << Update;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitThumbFunc(MCSymbol *Func) {
+ // This needs to emit to a temporary string to get properly quoted
+ // MCSymbols when they have spaces in them.
+ OS << "\t.thumb_func";
+ // Only Mach-O hasSubsectionsViaSymbols()
+ if (MAI->hasSubsectionsViaSymbols()) {
+ OS << '\t';
+ Func->print(OS, MAI);
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
+ Symbol->print(OS, MAI);
+ OS << " = ";
+ Value->print(OS, MAI);
+
+ EmitEOL();
+
+ MCStreamer::EmitAssignment(Symbol, Value);
+}
+
+void MCAsmStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {
+ OS << ".weakref ";
+ Alias->print(OS, MAI);
+ OS << ", ";
+ Symbol->print(OS, MAI);
+ EmitEOL();
+}
+
+bool MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+ MCSymbolAttr Attribute) {
+ switch (Attribute) {
+ case MCSA_Invalid: llvm_unreachable("Invalid symbol attribute");
+ case MCSA_ELF_TypeFunction: /// .type _foo, STT_FUNC # aka @function
+ case MCSA_ELF_TypeIndFunction: /// .type _foo, STT_GNU_IFUNC
+ case MCSA_ELF_TypeObject: /// .type _foo, STT_OBJECT # aka @object
+ case MCSA_ELF_TypeTLS: /// .type _foo, STT_TLS # aka @tls_object
+ case MCSA_ELF_TypeCommon: /// .type _foo, STT_COMMON # aka @common
+ case MCSA_ELF_TypeNoType: /// .type _foo, STT_NOTYPE # aka @notype
+ case MCSA_ELF_TypeGnuUniqueObject: /// .type _foo, @gnu_unique_object
+ if (!MAI->hasDotTypeDotSizeDirective())
+ return false; // Symbol attribute not supported
+ OS << "\t.type\t";
+ Symbol->print(OS, MAI);
+ OS << ',' << ((MAI->getCommentString()[0] != '@') ? '@' : '%');
+ switch (Attribute) {
+ default: return false;
+ case MCSA_ELF_TypeFunction: OS << "function"; break;
+ case MCSA_ELF_TypeIndFunction: OS << "gnu_indirect_function"; break;
+ case MCSA_ELF_TypeObject: OS << "object"; break;
+ case MCSA_ELF_TypeTLS: OS << "tls_object"; break;
+ case MCSA_ELF_TypeCommon: OS << "common"; break;
+ case MCSA_ELF_TypeNoType: OS << "no_type"; break;
+ case MCSA_ELF_TypeGnuUniqueObject: OS << "gnu_unique_object"; break;
+ }
+ EmitEOL();
+ return true;
+ case MCSA_Global: // .globl/.global
+ OS << MAI->getGlobalDirective();
+ break;
+ case MCSA_Hidden: OS << "\t.hidden\t"; break;
+ case MCSA_IndirectSymbol: OS << "\t.indirect_symbol\t"; break;
+ case MCSA_Internal: OS << "\t.internal\t"; break;
+ case MCSA_LazyReference: OS << "\t.lazy_reference\t"; break;
+ case MCSA_Local: OS << "\t.local\t"; break;
+ case MCSA_NoDeadStrip:
+ if (!MAI->hasNoDeadStrip())
+ return false;
+ OS << "\t.no_dead_strip\t";
+ break;
+ case MCSA_SymbolResolver: OS << "\t.symbol_resolver\t"; break;
+ case MCSA_PrivateExtern:
+ OS << "\t.private_extern\t";
+ break;
+ case MCSA_Protected: OS << "\t.protected\t"; break;
+ case MCSA_Reference: OS << "\t.reference\t"; break;
+ case MCSA_Weak: OS << MAI->getWeakDirective(); break;
+ case MCSA_WeakDefinition:
+ OS << "\t.weak_definition\t";
+ break;
+ // .weak_reference
+ case MCSA_WeakReference: OS << MAI->getWeakRefDirective(); break;
+ case MCSA_WeakDefAutoPrivate: OS << "\t.weak_def_can_be_hidden\t"; break;
+ }
+
+ Symbol->print(OS, MAI);
+ EmitEOL();
+
+ return true;
+}
+
+void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
+ OS << ".desc" << ' ';
+ Symbol->print(OS, MAI);
+ OS << ',' << DescValue;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSyntaxDirective() {
+ if (MAI->getAssemblerDialect() == 1)
+ OS << "\t.intel_syntax noprefix\n";
+ // FIXME: Currently emit unprefix'ed registers.
+ // The intel_syntax directive has one optional argument
+ // with may have a value of prefix or noprefix.
+}
+
+void MCAsmStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {
+ OS << "\t.def\t ";
+ Symbol->print(OS, MAI);
+ OS << ';';
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCOFFSymbolStorageClass (int StorageClass) {
+ OS << "\t.scl\t" << StorageClass << ';';
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCOFFSymbolType (int Type) {
+ OS << "\t.type\t" << Type << ';';
+ EmitEOL();
+}
+
+void MCAsmStreamer::EndCOFFSymbolDef() {
+ OS << "\t.endef";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {
+ OS << "\t.safeseh\t";
+ Symbol->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
+ OS << "\t.secidx\t";
+ Symbol->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
+ OS << "\t.secrel32\t";
+ Symbol->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) {
+ assert(MAI->hasDotTypeDotSizeDirective());
+ OS << "\t.size\t";
+ Symbol->print(OS, MAI);
+ OS << ", ";
+ Value->print(OS, MAI);
+ OS << '\n';
+}
+
+void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) {
+ OS << "\t.comm\t";
+ Symbol->print(OS, MAI);
+ OS << ',' << Size;
+
+ if (ByteAlignment != 0) {
+ if (MAI->getCOMMDirectiveAlignmentIsInBytes())
+ OS << ',' << ByteAlignment;
+ else
+ OS << ',' << Log2_32(ByteAlignment);
+ }
+ EmitEOL();
+}
+
+/// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
+///
+/// @param Symbol - The common symbol to emit.
+/// @param Size - The size of the common symbol.
+void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlign) {
+ OS << "\t.lcomm\t";
+ Symbol->print(OS, MAI);
+ OS << ',' << Size;
+
+ if (ByteAlign > 1) {
+ switch (MAI->getLCOMMDirectiveAlignmentType()) {
+ case LCOMM::NoAlignment:
+ llvm_unreachable("alignment not supported on .lcomm!");
+ case LCOMM::ByteAlignment:
+ OS << ',' << ByteAlign;
+ break;
+ case LCOMM::Log2Alignment:
+ assert(isPowerOf2_32(ByteAlign) && "alignment must be a power of 2");
+ OS << ',' << Log2_32(ByteAlign);
+ break;
+ }
+ }
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
+ if (Symbol)
+ AssignFragment(Symbol, &Section->getDummyFragment());
+
+ // Note: a .zerofill directive does not switch sections.
+ OS << ".zerofill ";
+
+ // This is a mach-o specific directive.
+ const MCSectionMachO *MOSection = ((const MCSectionMachO*)Section);
+ OS << MOSection->getSegmentName() << "," << MOSection->getSectionName();
+
+ if (Symbol) {
+ OS << ',';
+ Symbol->print(OS, MAI);
+ OS << ',' << Size;
+ if (ByteAlignment != 0)
+ OS << ',' << Log2_32(ByteAlignment);
+ }
+ EmitEOL();
+}
+
+// .tbss sym, size, align
+// This depends that the symbol has already been mangled from the original,
+// e.g. _a.
+void MCAsmStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
+ AssignFragment(Symbol, &Section->getDummyFragment());
+
+ assert(Symbol && "Symbol shouldn't be NULL!");
+ // Instead of using the Section we'll just use the shortcut.
+ // This is a mach-o specific directive and section.
+ OS << ".tbss ";
+ Symbol->print(OS, MAI);
+ OS << ", " << Size;
+
+ // Output align if we have it. We default to 1 so don't bother printing
+ // that.
+ if (ByteAlignment > 1) OS << ", " << Log2_32(ByteAlignment);
+
+ EmitEOL();
+}
+
+static inline char toOctal(int X) { return (X&7)+'0'; }
+
+static void PrintQuotedString(StringRef Data, raw_ostream &OS) {
+ OS << '"';
+
+ for (unsigned i = 0, e = Data.size(); i != e; ++i) {
+ unsigned char C = Data[i];
+ if (C == '"' || C == '\\') {
+ OS << '\\' << (char)C;
+ continue;
+ }
+
+ if (isprint((unsigned char)C)) {
+ OS << (char)C;
+ continue;
+ }
+
+ switch (C) {
+ case '\b': OS << "\\b"; break;
+ case '\f': OS << "\\f"; break;
+ case '\n': OS << "\\n"; break;
+ case '\r': OS << "\\r"; break;
+ case '\t': OS << "\\t"; break;
+ default:
+ OS << '\\';
+ OS << toOctal(C >> 6);
+ OS << toOctal(C >> 3);
+ OS << toOctal(C >> 0);
+ break;
+ }
+ }
+
+ OS << '"';
+}
+
+void MCAsmStreamer::EmitBytes(StringRef Data) {
+ assert(getCurrentSection().first &&
+ "Cannot emit contents before setting section!");
+ if (Data.empty()) return;
+
+ if (Data.size() == 1) {
+ OS << MAI->getData8bitsDirective();
+ OS << (unsigned)(unsigned char)Data[0];
+ EmitEOL();
+ return;
+ }
+
+ // If the data ends with 0 and the target supports .asciz, use it, otherwise
+ // use .ascii
+ if (MAI->getAscizDirective() && Data.back() == 0) {
+ OS << MAI->getAscizDirective();
+ Data = Data.substr(0, Data.size()-1);
+ } else {
+ OS << MAI->getAsciiDirective();
+ }
+
+ PrintQuotedString(Data, OS);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
+ EmitValue(MCConstantExpr::create(Value, getContext()), Size);
+}
+
+void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ SMLoc Loc) {
+ assert(Size <= 8 && "Invalid size");
+ assert(getCurrentSection().first &&
+ "Cannot emit contents before setting section!");
+ const char *Directive = nullptr;
+ switch (Size) {
+ default: break;
+ case 1: Directive = MAI->getData8bitsDirective(); break;
+ case 2: Directive = MAI->getData16bitsDirective(); break;
+ case 4: Directive = MAI->getData32bitsDirective(); break;
+ case 8: Directive = MAI->getData64bitsDirective(); break;
+ }
+
+ if (!Directive) {
+ int64_t IntValue;
+ if (!Value->evaluateAsAbsolute(IntValue))
+ report_fatal_error("Don't know how to emit this value.");
+
+ // We couldn't handle the requested integer size so we fallback by breaking
+ // the request down into several, smaller, integers. Since sizes greater
+ // than eight are invalid and size equivalent to eight should have been
+ // handled earlier, we use four bytes as our largest piece of granularity.
+ bool IsLittleEndian = MAI->isLittleEndian();
+ for (unsigned Emitted = 0; Emitted != Size;) {
+ unsigned Remaining = Size - Emitted;
+ // The size of our partial emission must be a power of two less than
+ // eight.
+ unsigned EmissionSize = PowerOf2Floor(Remaining);
+ if (EmissionSize > 4)
+ EmissionSize = 4;
+ // Calculate the byte offset of our partial emission taking into account
+ // the endianness of the target.
+ unsigned ByteOffset =
+ IsLittleEndian ? Emitted : (Remaining - EmissionSize);
+ uint64_t ValueToEmit = IntValue >> (ByteOffset * 8);
+ // We truncate our partial emission to fit within the bounds of the
+ // emission domain. This produces nicer output and silences potential
+ // truncation warnings when round tripping through another assembler.
+ uint64_t Shift = 64 - EmissionSize * 8;
+ assert(Shift < static_cast<uint64_t>(
+ std::numeric_limits<unsigned long long>::digits) &&
+ "undefined behavior");
+ ValueToEmit &= ~0ULL >> Shift;
+ EmitIntValue(ValueToEmit, EmissionSize);
+ Emitted += EmissionSize;
+ }
+ return;
+ }
+
+ assert(Directive && "Invalid size for machine code value!");
+ OS << Directive;
+ Value->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->evaluateAsAbsolute(IntValue)) {
+ EmitULEB128IntValue(IntValue);
+ return;
+ }
+ OS << ".uleb128 ";
+ Value->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->evaluateAsAbsolute(IntValue)) {
+ EmitSLEB128IntValue(IntValue);
+ return;
+ }
+ OS << ".sleb128 ";
+ Value->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitGPRel64Value(const MCExpr *Value) {
+ assert(MAI->getGPRel64Directive() != nullptr);
+ OS << MAI->getGPRel64Directive();
+ Value->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
+ assert(MAI->getGPRel32Directive() != nullptr);
+ OS << MAI->getGPRel32Directive();
+ Value->print(OS, MAI);
+ EmitEOL();
+}
+
+/// EmitFill - Emit NumBytes bytes worth of the value specified by
+/// FillValue. This implements directives such as '.space'.
+void MCAsmStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
+ if (NumBytes == 0) return;
+
+ if (const char *ZeroDirective = MAI->getZeroDirective()) {
+ OS << ZeroDirective << NumBytes;
+ if (FillValue != 0)
+ OS << ',' << (int)FillValue;
+ EmitEOL();
+ return;
+ }
+
+ // Emit a byte at a time.
+ MCStreamer::EmitFill(NumBytes, FillValue);
+}
+
+void MCAsmStreamer::EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
+ unsigned ValueSize,
+ unsigned MaxBytesToEmit) {
+ // Some assemblers don't support non-power of two alignments, so we always
+ // emit alignments as a power of two if possible.
+ if (isPowerOf2_32(ByteAlignment)) {
+ switch (ValueSize) {
+ default:
+ llvm_unreachable("Invalid size for machine code value!");
+ case 1:
+ OS << "\t.align\t";
+ break;
+ case 2:
+ OS << ".p2alignw ";
+ break;
+ case 4:
+ OS << ".p2alignl ";
+ break;
+ case 8:
+ llvm_unreachable("Unsupported alignment size!");
+ }
+
+ if (MAI->getAlignmentIsInBytes())
+ OS << ByteAlignment;
+ else
+ OS << Log2_32(ByteAlignment);
+
+ if (Value || MaxBytesToEmit) {
+ OS << ", 0x";
+ OS.write_hex(truncateToSize(Value, ValueSize));
+
+ if (MaxBytesToEmit)
+ OS << ", " << MaxBytesToEmit;
+ }
+ EmitEOL();
+ return;
+ }
+
+ // Non-power of two alignment. This is not widely supported by assemblers.
+ // FIXME: Parameterize this based on MAI.
+ switch (ValueSize) {
+ default: llvm_unreachable("Invalid size for machine code value!");
+ case 1: OS << ".balign"; break;
+ case 2: OS << ".balignw"; break;
+ case 4: OS << ".balignl"; break;
+ case 8: llvm_unreachable("Unsupported alignment size!");
+ }
+
+ OS << ' ' << ByteAlignment;
+ OS << ", " << truncateToSize(Value, ValueSize);
+ if (MaxBytesToEmit)
+ OS << ", " << MaxBytesToEmit;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCodeAlignment(unsigned ByteAlignment,
+ unsigned MaxBytesToEmit) {
+ // Emit with a text fill value.
+ EmitValueToAlignment(ByteAlignment, MAI->getTextAlignFillValue(),
+ 1, MaxBytesToEmit);
+}
+
+void MCAsmStreamer::emitValueToOffset(const MCExpr *Offset,
+ unsigned char Value) {
+ // FIXME: Verify that Offset is associated with the current section.
+ OS << ".org ";
+ Offset->print(OS, MAI);
+ OS << ", " << (unsigned)Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitFileDirective(StringRef Filename) {
+ assert(MAI->hasSingleParameterDotFile());
+ OS << "\t.file\t";
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+}
+
+unsigned MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo,
+ StringRef Directory,
+ StringRef Filename,
+ unsigned CUID) {
+ assert(CUID == 0);
+
+ MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
+ unsigned NumFiles = Table.getMCDwarfFiles().size();
+ FileNo = Table.getFile(Directory, Filename, FileNo);
+ if (FileNo == 0)
+ return 0;
+ if (NumFiles == Table.getMCDwarfFiles().size())
+ return FileNo;
+
+ SmallString<128> FullPathName;
+
+ if (!UseDwarfDirectory && !Directory.empty()) {
+ if (sys::path::is_absolute(Filename))
+ Directory = "";
+ else {
+ FullPathName = Directory;
+ sys::path::append(FullPathName, Filename);
+ Directory = "";
+ Filename = FullPathName;
+ }
+ }
+
+ OS << "\t.file\t" << FileNo << ' ';
+ if (!Directory.empty()) {
+ PrintQuotedString(Directory, OS);
+ OS << ' ';
+ }
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+
+ return FileNo;
+}
+
+void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa,
+ unsigned Discriminator,
+ StringRef FileName) {
+ OS << "\t.loc\t" << FileNo << " " << Line << " " << Column;
+ if (Flags & DWARF2_FLAG_BASIC_BLOCK)
+ OS << " basic_block";
+ if (Flags & DWARF2_FLAG_PROLOGUE_END)
+ OS << " prologue_end";
+ if (Flags & DWARF2_FLAG_EPILOGUE_BEGIN)
+ OS << " epilogue_begin";
+
+ unsigned OldFlags = getContext().getCurrentDwarfLoc().getFlags();
+ if ((Flags & DWARF2_FLAG_IS_STMT) != (OldFlags & DWARF2_FLAG_IS_STMT)) {
+ OS << " is_stmt ";
+
+ if (Flags & DWARF2_FLAG_IS_STMT)
+ OS << "1";
+ else
+ OS << "0";
+ }
+
+ if (Isa)
+ OS << " isa " << Isa;
+ if (Discriminator)
+ OS << " discriminator " << Discriminator;
+
+ if (IsVerboseAsm) {
+ OS.PadToColumn(MAI->getCommentColumn());
+ OS << MAI->getCommentString() << ' ' << FileName << ':'
+ << Line << ':' << Column;
+ }
+ EmitEOL();
+ this->MCStreamer::EmitDwarfLocDirective(FileNo, Line, Column, Flags,
+ Isa, Discriminator, FileName);
+}
+
+MCSymbol *MCAsmStreamer::getDwarfLineTableSymbol(unsigned CUID) {
+ // Always use the zeroth line table, since asm syntax only supports one line
+ // table for now.
+ return MCStreamer::getDwarfLineTableSymbol(0);
+}
+
+void MCAsmStreamer::EmitIdent(StringRef IdentString) {
+ assert(MAI->hasIdentDirective() && ".ident directive not supported");
+ OS << "\t.ident\t";
+ PrintQuotedString(IdentString, OS);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISections(bool EH, bool Debug) {
+ MCStreamer::EmitCFISections(EH, Debug);
+ OS << "\t.cfi_sections ";
+ if (EH) {
+ OS << ".eh_frame";
+ if (Debug)
+ OS << ", .debug_frame";
+ } else if (Debug) {
+ OS << ".debug_frame";
+ }
+
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
+ OS << "\t.cfi_startproc";
+ if (Frame.IsSimple)
+ OS << " simple";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
+ MCStreamer::EmitCFIEndProcImpl(Frame);
+ OS << "\t.cfi_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitRegisterName(int64_t Register) {
+ if (!MAI->useDwarfRegNumForCFI()) {
+ const MCRegisterInfo *MRI = getContext().getRegisterInfo();
+ unsigned LLVMRegister = MRI->getLLVMRegNum(Register, true);
+ InstPrinter->printRegName(OS, LLVMRegister);
+ } else {
+ OS << Register;
+ }
+}
+
+void MCAsmStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+ MCStreamer::EmitCFIDefCfa(Register, Offset);
+ OS << "\t.cfi_def_cfa ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+ MCStreamer::EmitCFIDefCfaOffset(Offset);
+ OS << "\t.cfi_def_cfa_offset " << Offset;
+ EmitEOL();
+}
+
+static void PrintCFIEscape(llvm::formatted_raw_ostream &OS, StringRef Values) {
+ OS << "\t.cfi_escape ";
+ if (!Values.empty()) {
+ size_t e = Values.size() - 1;
+ for (size_t i = 0; i < e; ++i)
+ OS << format("0x%02x", uint8_t(Values[i])) << ", ";
+ OS << format("0x%02x", uint8_t(Values[e]));
+ }
+}
+
+void MCAsmStreamer::EmitCFIEscape(StringRef Values) {
+ MCStreamer::EmitCFIEscape(Values);
+ PrintCFIEscape(OS, Values);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIGnuArgsSize(int64_t Size) {
+ MCStreamer::EmitCFIGnuArgsSize(Size);
+
+ uint8_t Buffer[16] = { dwarf::DW_CFA_GNU_args_size };
+ unsigned Len = encodeULEB128(Size, Buffer + 1) + 1;
+
+ PrintCFIEscape(OS, StringRef((const char *)&Buffer[0], Len));
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+ MCStreamer::EmitCFIDefCfaRegister(Register);
+ OS << "\t.cfi_def_cfa_register ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+ this->MCStreamer::EmitCFIOffset(Register, Offset);
+ OS << "\t.cfi_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIPersonality(const MCSymbol *Sym,
+ unsigned Encoding) {
+ MCStreamer::EmitCFIPersonality(Sym, Encoding);
+ OS << "\t.cfi_personality " << Encoding << ", ";
+ Sym->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
+ MCStreamer::EmitCFILsda(Sym, Encoding);
+ OS << "\t.cfi_lsda " << Encoding << ", ";
+ Sym->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRememberState() {
+ MCStreamer::EmitCFIRememberState();
+ OS << "\t.cfi_remember_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRestoreState() {
+ MCStreamer::EmitCFIRestoreState();
+ OS << "\t.cfi_restore_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISameValue(int64_t Register) {
+ MCStreamer::EmitCFISameValue(Register);
+ OS << "\t.cfi_same_value ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
+ MCStreamer::EmitCFIRelOffset(Register, Offset);
+ OS << "\t.cfi_rel_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
+ MCStreamer::EmitCFIAdjustCfaOffset(Adjustment);
+ OS << "\t.cfi_adjust_cfa_offset " << Adjustment;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISignalFrame() {
+ MCStreamer::EmitCFISignalFrame();
+ OS << "\t.cfi_signal_frame";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIUndefined(int64_t Register) {
+ MCStreamer::EmitCFIUndefined(Register);
+ OS << "\t.cfi_undefined " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
+ MCStreamer::EmitCFIRegister(Register1, Register2);
+ OS << "\t.cfi_register " << Register1 << ", " << Register2;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIWindowSave() {
+ MCStreamer::EmitCFIWindowSave();
+ OS << "\t.cfi_window_save";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIStartProc(const MCSymbol *Symbol) {
+ MCStreamer::EmitWinCFIStartProc(Symbol);
+
+ OS << ".seh_proc ";
+ Symbol->print(OS, MAI);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIEndProc() {
+ MCStreamer::EmitWinCFIEndProc();
+
+ OS << "\t.seh_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIStartChained() {
+ MCStreamer::EmitWinCFIStartChained();
+
+ OS << "\t.seh_startchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIEndChained() {
+ MCStreamer::EmitWinCFIEndChained();
+
+ OS << "\t.seh_endchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinEHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except) {
+ MCStreamer::EmitWinEHHandler(Sym, Unwind, Except);
+
+ OS << "\t.seh_handler ";
+ Sym->print(OS, MAI);
+ if (Unwind)
+ OS << ", @unwind";
+ if (Except)
+ OS << ", @except";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinEHHandlerData() {
+ MCStreamer::EmitWinEHHandlerData();
+
+ // Switch sections. Don't call SwitchSection directly, because that will
+ // cause the section switch to be visible in the emitted assembly.
+ // We only do this so the section switch that terminates the handler
+ // data block is visible.
+ WinEH::FrameInfo *CurFrame = getCurrentWinFrameInfo();
+ MCSection *XData =
+ WinEH::UnwindEmitter::getXDataSection(CurFrame->Function, getContext());
+ SwitchSectionNoChange(XData);
+
+ OS << "\t.seh_handlerdata";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIPushReg(unsigned Register) {
+ MCStreamer::EmitWinCFIPushReg(Register);
+
+ OS << "\t.seh_pushreg " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFISetFrame(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWinCFISetFrame(Register, Offset);
+
+ OS << "\t.seh_setframe " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIAllocStack(unsigned Size) {
+ MCStreamer::EmitWinCFIAllocStack(Size);
+
+ OS << "\t.seh_stackalloc " << Size;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFISaveReg(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWinCFISaveReg(Register, Offset);
+
+ OS << "\t.seh_savereg " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFISaveXMM(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWinCFISaveXMM(Register, Offset);
+
+ OS << "\t.seh_savexmm " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIPushFrame(bool Code) {
+ MCStreamer::EmitWinCFIPushFrame(Code);
+
+ OS << "\t.seh_pushframe";
+ if (Code)
+ OS << " @code";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWinCFIEndProlog() {
+ MCStreamer::EmitWinCFIEndProlog();
+
+ OS << "\t.seh_endprologue";
+ EmitEOL();
+}
+
+void MCAsmStreamer::AddEncodingComment(const MCInst &Inst,
+ const MCSubtargetInfo &STI) {
+ raw_ostream &OS = GetCommentOS();
+ SmallString<256> Code;
+ SmallVector<MCFixup, 4> Fixups;
+ raw_svector_ostream VecOS(Code);
+ Emitter->encodeInstruction(Inst, VecOS, Fixups, STI);
+
+ // If we are showing fixups, create symbolic markers in the encoded
+ // representation. We do this by making a per-bit map to the fixup item index,
+ // then trying to display it as nicely as possible.
+ SmallVector<uint8_t, 64> FixupMap;
+ FixupMap.resize(Code.size() * 8);
+ for (unsigned i = 0, e = Code.size() * 8; i != e; ++i)
+ FixupMap[i] = 0;
+
+ for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
+ MCFixup &F = Fixups[i];
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
+ for (unsigned j = 0; j != Info.TargetSize; ++j) {
+ unsigned Index = F.getOffset() * 8 + Info.TargetOffset + j;
+ assert(Index < Code.size() * 8 && "Invalid offset in fixup!");
+ FixupMap[Index] = 1 + i;
+ }
+ }
+
+ // FIXME: Note the fixup comments for Thumb2 are completely bogus since the
+ // high order halfword of a 32-bit Thumb2 instruction is emitted first.
+ OS << "encoding: [";
+ for (unsigned i = 0, e = Code.size(); i != e; ++i) {
+ if (i)
+ OS << ',';
+
+ // See if all bits are the same map entry.
+ uint8_t MapEntry = FixupMap[i * 8 + 0];
+ for (unsigned j = 1; j != 8; ++j) {
+ if (FixupMap[i * 8 + j] == MapEntry)
+ continue;
+
+ MapEntry = uint8_t(~0U);
+ break;
+ }
+
+ if (MapEntry != uint8_t(~0U)) {
+ if (MapEntry == 0) {
+ OS << format("0x%02x", uint8_t(Code[i]));
+ } else {
+ if (Code[i]) {
+ // FIXME: Some of the 8 bits require fix up.
+ OS << format("0x%02x", uint8_t(Code[i])) << '\''
+ << char('A' + MapEntry - 1) << '\'';
+ } else
+ OS << char('A' + MapEntry - 1);
+ }
+ } else {
+ // Otherwise, write out in binary.
+ OS << "0b";
+ for (unsigned j = 8; j--;) {
+ unsigned Bit = (Code[i] >> j) & 1;
+
+ unsigned FixupBit;
+ if (MAI->isLittleEndian())
+ FixupBit = i * 8 + j;
+ else
+ FixupBit = i * 8 + (7-j);
+
+ if (uint8_t MapEntry = FixupMap[FixupBit]) {
+ assert(Bit == 0 && "Encoder wrote into fixed up bit!");
+ OS << char('A' + MapEntry - 1);
+ } else
+ OS << Bit;
+ }
+ }
+ }
+ OS << "]\n";
+
+ for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
+ MCFixup &F = Fixups[i];
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
+ OS << " fixup " << char('A' + i) << " - " << "offset: " << F.getOffset()
+ << ", value: " << *F.getValue() << ", kind: " << Info.Name << "\n";
+ }
+}
+
+void MCAsmStreamer::EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) {
+ assert(getCurrentSection().first &&
+ "Cannot emit contents before setting section!");
+
+ // Show the encoding in a comment if we have a code emitter.
+ if (Emitter)
+ AddEncodingComment(Inst, STI);
+
+ // Show the MCInst if enabled.
+ if (ShowInst) {
+ Inst.dump_pretty(GetCommentOS(), InstPrinter.get(), "\n ");
+ GetCommentOS() << "\n";
+ }
+
+ if(getTargetStreamer())
+ getTargetStreamer()->prettyPrintAsm(*InstPrinter, OS, Inst, STI);
+ else
+ InstPrinter->printInst(&Inst, OS, "", STI);
+
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitBundleAlignMode(unsigned AlignPow2) {
+ OS << "\t.bundle_align_mode " << AlignPow2;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitBundleLock(bool AlignToEnd) {
+ OS << "\t.bundle_lock";
+ if (AlignToEnd)
+ OS << " align_to_end";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitBundleUnlock() {
+ OS << "\t.bundle_unlock";
+ EmitEOL();
+}
+
+bool MCAsmStreamer::EmitRelocDirective(const MCExpr &Offset, StringRef Name,
+ const MCExpr *Expr, SMLoc) {
+ OS << "\t.reloc ";
+ Offset.print(OS, MAI);
+ OS << ", " << Name;
+ if (Expr) {
+ OS << ", ";
+ Expr->print(OS, MAI);
+ }
+ EmitEOL();
+ return false;
+}
+
+/// 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 MCAsmStreamer::EmitRawTextImpl(StringRef String) {
+ if (!String.empty() && String.back() == '\n')
+ String = String.substr(0, String.size()-1);
+ OS << String;
+ EmitEOL();
+}
+
+void MCAsmStreamer::FinishImpl() {
+ // If we are generating dwarf for assembly source files dump out the sections.
+ if (getContext().getGenDwarfForAssembly())
+ MCGenDwarfInfo::Emit(this);
+
+ // Emit the label for the line table, if requested - since the rest of the
+ // line table will be defined by .loc/.file directives, and not emitted
+ // directly, the label is the only work required here.
+ auto &Tables = getContext().getMCDwarfLineTables();
+ if (!Tables.empty()) {
+ assert(Tables.size() == 1 && "asm output only supports one line table");
+ if (auto *Label = Tables.begin()->second.getLabel()) {
+ SwitchSection(getContext().getObjectFileInfo()->getDwarfLineSection());
+ EmitLabel(Label);
+ }
+ }
+}
+
+MCStreamer *llvm::createAsmStreamer(MCContext &Context,
+ std::unique_ptr<formatted_raw_ostream> OS,
+ bool isVerboseAsm, bool useDwarfDirectory,
+ MCInstPrinter *IP, MCCodeEmitter *CE,
+ MCAsmBackend *MAB, bool ShowInst) {
+ return new MCAsmStreamer(Context, std::move(OS), isVerboseAsm,
+ useDwarfDirectory, IP, CE, MAB, ShowInst);
+}
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