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-rw-r--r--contrib/llvm/lib/MC/MCAsmStreamer.cpp1440
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diff --git a/contrib/llvm/lib/MC/MCAsmStreamer.cpp b/contrib/llvm/lib/MC/MCAsmStreamer.cpp
new file mode 100644
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+++ b/contrib/llvm/lib/MC/MCAsmStreamer.cpp
@@ -0,0 +1,1440 @@
+//===- lib/MC/MCAsmStreamer.cpp - Text Assembly 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/MCStreamer.h"
+#include "llvm/ADT/OwningPtr.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/MCSymbol.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/PathV2.h"
+#include <cctype>
+using namespace llvm;
+
+namespace {
+
+class MCAsmStreamer : public MCStreamer {
+protected:
+ formatted_raw_ostream &OS;
+ const MCAsmInfo &MAI;
+private:
+ OwningPtr<MCInstPrinter> InstPrinter;
+ OwningPtr<MCCodeEmitter> Emitter;
+ OwningPtr<MCAsmBackend> AsmBackend;
+
+ SmallString<128> CommentToEmit;
+ raw_svector_ostream CommentStream;
+
+ unsigned IsVerboseAsm : 1;
+ unsigned ShowInst : 1;
+ unsigned UseLoc : 1;
+ unsigned UseCFI : 1;
+ unsigned UseDwarfDirectory : 1;
+
+ enum EHSymbolFlags { EHGlobal = 1,
+ EHWeakDefinition = 1 << 1,
+ EHPrivateExtern = 1 << 2 };
+ DenseMap<const MCSymbol*, unsigned> FlagMap;
+
+ bool needsSet(const MCExpr *Value);
+
+ void EmitRegisterName(int64_t Register);
+ virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
+ virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
+
+public:
+ MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
+ bool isVerboseAsm, bool useLoc, bool useCFI,
+ bool useDwarfDirectory,
+ MCInstPrinter *printer, MCCodeEmitter *emitter,
+ MCAsmBackend *asmbackend,
+ bool showInst)
+ : MCStreamer(SK_AsmStreamer, Context), OS(os), MAI(Context.getAsmInfo()),
+ InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
+ CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
+ ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI),
+ UseDwarfDirectory(useDwarfDirectory) {
+ if (InstPrinter && IsVerboseAsm)
+ InstPrinter->setCommentStream(CommentStream);
+ }
+ ~MCAsmStreamer() {}
+
+ inline void EmitEOL() {
+ // If we don't have any comments, just emit a \n.
+ if (!IsVerboseAsm) {
+ OS << '\n';
+ return;
+ }
+ EmitCommentsAndEOL();
+ }
+ void EmitCommentsAndEOL();
+
+ /// isVerboseAsm - Return true if this streamer supports verbose assembly at
+ /// all.
+ virtual bool isVerboseAsm() const { return IsVerboseAsm; }
+
+ /// hasRawTextSupport - We support EmitRawText.
+ virtual bool hasRawTextSupport() const { 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.
+ virtual void AddComment(const Twine &T);
+
+ /// AddEncodingComment - Add a comment showing the encoding of an instruction.
+ virtual void AddEncodingComment(const MCInst &Inst);
+
+ /// 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.
+ virtual raw_ostream &GetCommentOS() {
+ if (!IsVerboseAsm)
+ return nulls(); // Discard comments unless in verbose asm mode.
+ return CommentStream;
+ }
+
+ /// AddBlankLine - Emit a blank line to a .s file to pretty it up.
+ virtual void AddBlankLine() {
+ EmitEOL();
+ }
+
+ /// @name MCStreamer Interface
+ /// @{
+
+ virtual void ChangeSection(const MCSection *Section);
+
+ virtual void InitSections() {
+ InitToTextSection();
+ }
+
+ virtual void InitToTextSection() {
+ // FIXME, this is MachO specific, but the testsuite
+ // expects this.
+ SwitchSection(getContext().getMachOSection(
+ "__TEXT", "__text",
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 0, SectionKind::getText()));
+ }
+
+ virtual void EmitLabel(MCSymbol *Symbol);
+ virtual void EmitDebugLabel(MCSymbol *Symbol);
+
+ virtual void EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol);
+ virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+ virtual void EmitLinkerOptions(ArrayRef<std::string> Options);
+ virtual void EmitDataRegion(MCDataRegionType Kind);
+ virtual void EmitThumbFunc(MCSymbol *Func);
+
+ virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
+ virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
+ virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize);
+ virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
+ const MCSymbol *Label);
+
+ virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
+
+ virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
+ virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
+ virtual void EmitCOFFSymbolStorageClass(int StorageClass);
+ virtual void EmitCOFFSymbolType(int Type);
+ virtual void EndCOFFSymbolDef();
+ virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
+ virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
+ virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment);
+
+ /// 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.
+ virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment);
+
+ virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
+ uint64_t Size = 0, unsigned ByteAlignment = 0);
+
+ virtual void EmitTBSSSymbol (const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment = 0);
+
+ virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
+
+ virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace);
+ virtual void EmitIntValue(uint64_t Value, unsigned Size,
+ unsigned AddrSpace = 0);
+
+ virtual void EmitULEB128Value(const MCExpr *Value);
+
+ virtual void EmitSLEB128Value(const MCExpr *Value);
+
+ virtual void EmitGPRel64Value(const MCExpr *Value);
+
+ virtual void EmitGPRel32Value(const MCExpr *Value);
+
+
+ virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue,
+ unsigned AddrSpace);
+
+ virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
+ unsigned ValueSize = 1,
+ unsigned MaxBytesToEmit = 0);
+
+ virtual void EmitCodeAlignment(unsigned ByteAlignment,
+ unsigned MaxBytesToEmit = 0);
+
+ virtual bool EmitValueToOffset(const MCExpr *Offset,
+ unsigned char Value = 0);
+
+ virtual void EmitFileDirective(StringRef Filename);
+ virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename, unsigned CUID = 0);
+ virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa, unsigned Discriminator,
+ StringRef FileName);
+
+ virtual void EmitCFISections(bool EH, bool Debug);
+ virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
+ virtual void EmitCFIDefCfaOffset(int64_t Offset);
+ virtual void EmitCFIDefCfaRegister(int64_t Register);
+ virtual void EmitCFIOffset(int64_t Register, int64_t Offset);
+ virtual void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding);
+ virtual void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding);
+ virtual void EmitCFIRememberState();
+ virtual void EmitCFIRestoreState();
+ virtual void EmitCFISameValue(int64_t Register);
+ virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
+ virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
+ virtual void EmitCFISignalFrame();
+ virtual void EmitCFIUndefined(int64_t Register);
+ virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
+
+ virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
+ virtual void EmitWin64EHEndProc();
+ virtual void EmitWin64EHStartChained();
+ virtual void EmitWin64EHEndChained();
+ virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except);
+ virtual void EmitWin64EHHandlerData();
+ virtual void EmitWin64EHPushReg(unsigned Register);
+ virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHAllocStack(unsigned Size);
+ virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset);
+ virtual void EmitWin64EHPushFrame(bool Code);
+ virtual void EmitWin64EHEndProlog();
+
+ virtual void EmitFnStart();
+ virtual void EmitFnEnd();
+ virtual void EmitCantUnwind();
+ virtual void EmitPersonality(const MCSymbol *Personality);
+ virtual void EmitHandlerData();
+ virtual void EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0);
+ virtual void EmitPad(int64_t Offset);
+ virtual void EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool);
+
+ virtual void EmitTCEntry(const MCSymbol &S);
+
+ virtual void EmitInstruction(const MCInst &Inst);
+
+ virtual void EmitBundleAlignMode(unsigned AlignPow2);
+ virtual void EmitBundleLock(bool AlignToEnd);
+ virtual void EmitBundleUnlock();
+
+ /// 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.
+ virtual void EmitRawText(StringRef String);
+
+ virtual void FinishImpl();
+
+ /// @}
+
+ static bool classof(const MCStreamer *S) {
+ return S->getKind() == SK_AsmStreamer;
+ }
+};
+
+} // 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;
+
+ // Make sure that CommentStream is flushed.
+ CommentStream.flush();
+
+ T.toVector(CommentToEmit);
+ // Each comment goes on its own line.
+ CommentToEmit.push_back('\n');
+
+ // Tell the comment stream that the vector changed underneath it.
+ CommentStream.resync();
+}
+
+void MCAsmStreamer::EmitCommentsAndEOL() {
+ if (CommentToEmit.empty() && CommentStream.GetNumBytesInBuffer() == 0) {
+ OS << '\n';
+ return;
+ }
+
+ CommentStream.flush();
+ StringRef Comments = CommentToEmit.str();
+
+ 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();
+ // Tell the comment stream that the vector changed underneath it.
+ CommentStream.resync();
+}
+
+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::ChangeSection(const MCSection *Section) {
+ assert(Section && "Cannot switch to a null section!");
+ Section->PrintSwitchToSection(MAI, OS);
+}
+
+void MCAsmStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol) {
+ if (UseCFI)
+ return;
+
+ unsigned Flags = FlagMap.lookup(Symbol);
+
+ if (Flags & EHGlobal)
+ EmitSymbolAttribute(EHSymbol, MCSA_Global);
+ if (Flags & EHWeakDefinition)
+ EmitSymbolAttribute(EHSymbol, MCSA_WeakDefinition);
+ if (Flags & EHPrivateExtern)
+ EmitSymbolAttribute(EHSymbol, MCSA_PrivateExtern);
+}
+
+void MCAsmStreamer::EmitLabel(MCSymbol *Symbol) {
+ assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
+ MCStreamer::EmitLabel(Symbol);
+
+ OS << *Symbol << MAI.getLabelSuffix();
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitDebugLabel(MCSymbol *Symbol) {
+ assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
+ MCStreamer::EmitDebugLabel(Symbol);
+
+ OS << *Symbol << MAI.getDebugLabelSuffix();
+ 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) {
+ MCContext &Ctx = getContext();
+ const MCAsmInfo &MAI = Ctx.getAsmInfo();
+ 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::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;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
+ OS << *Symbol << " = " << *Value;
+ EmitEOL();
+
+ // FIXME: Lift context changes into super class.
+ Symbol->setVariableValue(Value);
+}
+
+void MCAsmStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {
+ OS << ".weakref " << *Alias << ", " << *Symbol;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize) {
+ EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
+}
+
+void MCAsmStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
+ const MCSymbol *Label) {
+ EmitIntValue(dwarf::DW_CFA_advance_loc4, 1);
+ const MCExpr *AddrDelta = BuildSymbolDiff(getContext(), Label, LastLabel);
+ AddrDelta = ForceExpAbs(AddrDelta);
+ EmitValue(AddrDelta, 4);
+}
+
+
+void 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
+ assert(MAI.hasDotTypeDotSizeDirective() && "Symbol Attr not supported");
+ OS << "\t.type\t" << *Symbol << ','
+ << ((MAI.getCommentString()[0] != '@') ? '@' : '%');
+ switch (Attribute) {
+ default: llvm_unreachable("Unknown ELF .type");
+ 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;
+ case MCSA_Global: // .globl/.global
+ OS << MAI.getGlobalDirective();
+ FlagMap[Symbol] |= EHGlobal;
+ 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: OS << "\t.no_dead_strip\t"; break;
+ case MCSA_SymbolResolver: OS << "\t.symbol_resolver\t"; break;
+ case MCSA_PrivateExtern:
+ OS << "\t.private_extern\t";
+ FlagMap[Symbol] |= EHPrivateExtern;
+ break;
+ case MCSA_Protected: OS << "\t.protected\t"; break;
+ case MCSA_Reference: OS << "\t.reference\t"; break;
+ case MCSA_Weak: OS << "\t.weak\t"; break;
+ case MCSA_WeakDefinition:
+ OS << "\t.weak_definition\t";
+ FlagMap[Symbol] |= EHWeakDefinition;
+ break;
+ // .weak_reference
+ case MCSA_WeakReference: OS << MAI.getWeakRefDirective(); break;
+ case MCSA_WeakDefAutoPrivate: OS << "\t.weak_def_can_be_hidden\t"; break;
+ }
+
+ OS << *Symbol;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
+ OS << ".desc" << ' ' << *Symbol << ',' << DescValue;
+ EmitEOL();
+}
+
+void MCAsmStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {
+ OS << "\t.def\t " << *Symbol << ';';
+ 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::EmitCOFFSecRel32(MCSymbol const *Symbol) {
+ OS << "\t.secrel32\t" << *Symbol << '\n';
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
+ assert(MAI.hasDotTypeDotSizeDirective());
+ OS << "\t.size\t" << *Symbol << ", " << *Value << '\n';
+}
+
+void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) {
+ OS << "\t.comm\t" << *Symbol << ',' << 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 << ',' << 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(const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
+ // 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 != NULL) {
+ OS << ',' << *Symbol << ',' << 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(const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) {
+ assert(Symbol != NULL && "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 << ", " << 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, unsigned AddrSpace) {
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
+ if (Data.empty()) return;
+
+ if (Data.size() == 1) {
+ OS << MAI.getData8bitsDirective(AddrSpace);
+ 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();
+ }
+
+ OS << ' ';
+ PrintQuotedString(Data, OS);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size,
+ unsigned AddrSpace) {
+ EmitValue(MCConstantExpr::Create(Value, getContext()), Size, AddrSpace);
+}
+
+void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ unsigned AddrSpace) {
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
+ const char *Directive = 0;
+ switch (Size) {
+ default: break;
+ case 1: Directive = MAI.getData8bitsDirective(AddrSpace); break;
+ case 2: Directive = MAI.getData16bitsDirective(AddrSpace); break;
+ case 4: Directive = MAI.getData32bitsDirective(AddrSpace); break;
+ case 8:
+ Directive = MAI.getData64bitsDirective(AddrSpace);
+ // If the target doesn't support 64-bit data, emit as two 32-bit halves.
+ if (Directive) break;
+ int64_t IntValue;
+ if (!Value->EvaluateAsAbsolute(IntValue))
+ report_fatal_error("Don't know how to emit this value.");
+ if (getContext().getAsmInfo().isLittleEndian()) {
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
+ } else {
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
+ }
+ return;
+ }
+
+ assert(Directive && "Invalid size for machine code value!");
+ OS << Directive << *Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitULEB128IntValue(IntValue);
+ return;
+ }
+ assert(MAI.hasLEB128() && "Cannot print a .uleb");
+ OS << ".uleb128 " << *Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitSLEB128IntValue(IntValue);
+ return;
+ }
+ assert(MAI.hasLEB128() && "Cannot print a .sleb");
+ OS << ".sleb128 " << *Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitGPRel64Value(const MCExpr *Value) {
+ assert(MAI.getGPRel64Directive() != 0);
+ OS << MAI.getGPRel64Directive() << *Value;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
+ assert(MAI.getGPRel32Directive() != 0);
+ OS << MAI.getGPRel32Directive() << *Value;
+ 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,
+ unsigned AddrSpace) {
+ if (NumBytes == 0) return;
+
+ if (AddrSpace == 0)
+ 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, AddrSpace);
+}
+
+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 << MAI.getAlignDirective(); break;
+ // FIXME: use MAI for this!
+ 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);
+}
+
+bool MCAsmStreamer::EmitValueToOffset(const MCExpr *Offset,
+ unsigned char Value) {
+ // FIXME: Verify that Offset is associated with the current section.
+ OS << ".org " << *Offset << ", " << (unsigned) Value;
+ EmitEOL();
+ return false;
+}
+
+
+void MCAsmStreamer::EmitFileDirective(StringRef Filename) {
+ assert(MAI.hasSingleParameterDotFile());
+ OS << "\t.file\t";
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+}
+
+bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename, unsigned CUID) {
+ if (!UseDwarfDirectory && !Directory.empty()) {
+ if (sys::path::is_absolute(Filename))
+ return EmitDwarfFileDirective(FileNo, "", Filename, CUID);
+
+ SmallString<128> FullPathName = Directory;
+ sys::path::append(FullPathName, Filename);
+ return EmitDwarfFileDirective(FileNo, "", FullPathName, CUID);
+ }
+
+ if (UseLoc) {
+ OS << "\t.file\t" << FileNo << ' ';
+ if (!Directory.empty()) {
+ PrintQuotedString(Directory, OS);
+ OS << ' ';
+ }
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+ // All .file will belong to a single CUID.
+ CUID = 0;
+ }
+ return this->MCStreamer::EmitDwarfFileDirective(FileNo, Directory, Filename,
+ CUID);
+}
+
+void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+ unsigned Column, unsigned Flags,
+ unsigned Isa,
+ unsigned Discriminator,
+ StringRef FileName) {
+ this->MCStreamer::EmitDwarfLocDirective(FileNo, Line, Column, Flags,
+ Isa, Discriminator, FileName);
+ if (!UseLoc)
+ return;
+
+ 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();
+}
+
+void MCAsmStreamer::EmitCFISections(bool EH, bool Debug) {
+ MCStreamer::EmitCFISections(EH, Debug);
+
+ if (!UseCFI)
+ return;
+
+ 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) {
+ if (!UseCFI) {
+ RecordProcStart(Frame);
+ return;
+ }
+
+ OS << "\t.cfi_startproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
+ if (!UseCFI) {
+ RecordProcEnd(Frame);
+ return;
+ }
+
+ // Put a dummy non-null value in Frame.End to mark that this frame has been
+ // closed.
+ Frame.End = (MCSymbol *) 1;
+
+ OS << "\t.cfi_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitRegisterName(int64_t Register) {
+ if (InstPrinter && !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);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+ MCStreamer::EmitCFIDefCfaOffset(Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa_offset " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+ MCStreamer::EmitCFIDefCfaRegister(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_def_cfa_register ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+ this->MCStreamer::EmitCFIOffset(Register, Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIPersonality(const MCSymbol *Sym,
+ unsigned Encoding) {
+ MCStreamer::EmitCFIPersonality(Sym, Encoding);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_personality " << Encoding << ", " << *Sym;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
+ MCStreamer::EmitCFILsda(Sym, Encoding);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_lsda " << Encoding << ", " << *Sym;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRememberState() {
+ MCStreamer::EmitCFIRememberState();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_remember_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRestoreState() {
+ MCStreamer::EmitCFIRestoreState();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_restore_state";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISameValue(int64_t Register) {
+ MCStreamer::EmitCFISameValue(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_same_value ";
+ EmitRegisterName(Register);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
+ MCStreamer::EmitCFIRelOffset(Register, Offset);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_rel_offset ";
+ EmitRegisterName(Register);
+ OS << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
+ MCStreamer::EmitCFIAdjustCfaOffset(Adjustment);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_adjust_cfa_offset " << Adjustment;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFISignalFrame() {
+ MCStreamer::EmitCFISignalFrame();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_signal_frame";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIUndefined(int64_t Register) {
+ MCStreamer::EmitCFIUndefined(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_undefined " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
+ MCStreamer::EmitCFIRegister(Register1, Register2);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_register " << Register1 << ", " << Register2;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
+ MCStreamer::EmitWin64EHStartProc(Symbol);
+
+ OS << ".seh_proc " << *Symbol;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndProc() {
+ MCStreamer::EmitWin64EHEndProc();
+
+ OS << "\t.seh_endproc";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHStartChained() {
+ MCStreamer::EmitWin64EHStartChained();
+
+ OS << "\t.seh_startchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndChained() {
+ MCStreamer::EmitWin64EHEndChained();
+
+ OS << "\t.seh_endchained";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except) {
+ MCStreamer::EmitWin64EHHandler(Sym, Unwind, Except);
+
+ OS << "\t.seh_handler " << *Sym;
+ if (Unwind)
+ OS << ", @unwind";
+ if (Except)
+ OS << ", @except";
+ EmitEOL();
+}
+
+static const MCSection *getWin64EHTableSection(StringRef suffix,
+ MCContext &context) {
+ // FIXME: This doesn't belong in MCObjectFileInfo. However,
+ /// this duplicate code in MCWin64EH.cpp.
+ if (suffix == "")
+ return context.getObjectFileInfo()->getXDataSection();
+ return context.getCOFFSection((".xdata"+suffix).str(),
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
+}
+
+void MCAsmStreamer::EmitWin64EHHandlerData() {
+ MCStreamer::EmitWin64EHHandlerData();
+
+ // 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.
+ MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
+ StringRef suffix=MCWin64EHUnwindEmitter::GetSectionSuffix(CurFrame->Function);
+ const MCSection *xdataSect = getWin64EHTableSection(suffix, getContext());
+ if (xdataSect)
+ SwitchSectionNoChange(xdataSect);
+
+ OS << "\t.seh_handlerdata";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHPushReg(unsigned Register) {
+ MCStreamer::EmitWin64EHPushReg(Register);
+
+ OS << "\t.seh_pushreg " << Register;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSetFrame(Register, Offset);
+
+ OS << "\t.seh_setframe " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHAllocStack(unsigned Size) {
+ MCStreamer::EmitWin64EHAllocStack(Size);
+
+ OS << "\t.seh_stackalloc " << Size;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSaveReg(Register, Offset);
+
+ OS << "\t.seh_savereg " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
+ MCStreamer::EmitWin64EHSaveXMM(Register, Offset);
+
+ OS << "\t.seh_savexmm " << Register << ", " << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHPushFrame(bool Code) {
+ MCStreamer::EmitWin64EHPushFrame(Code);
+
+ OS << "\t.seh_pushframe";
+ if (Code)
+ OS << " @code";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitWin64EHEndProlog(void) {
+ MCStreamer::EmitWin64EHEndProlog();
+
+ OS << "\t.seh_endprologue";
+ EmitEOL();
+}
+
+void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
+ raw_ostream &OS = GetCommentOS();
+ SmallString<256> Code;
+ SmallVector<MCFixup, 4> Fixups;
+ raw_svector_ostream VecOS(Code);
+ Emitter->EncodeInstruction(Inst, VecOS, Fixups);
+ VecOS.flush();
+
+ // 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 (getContext().getAsmInfo().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::EmitFnStart() {
+ OS << "\t.fnstart";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitFnEnd() {
+ OS << "\t.fnend";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCantUnwind() {
+ OS << "\t.cantunwind";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitHandlerData() {
+ OS << "\t.handlerdata";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitPersonality(const MCSymbol *Personality) {
+ OS << "\t.personality " << Personality->getName();
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
+ OS << "\t.setfp\t";
+ InstPrinter->printRegName(OS, FpReg);
+ OS << ", ";
+ InstPrinter->printRegName(OS, SpReg);
+ if (Offset)
+ OS << ", #" << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitPad(int64_t Offset) {
+ OS << "\t.pad\t#" << Offset;
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList,
+ bool isVector) {
+ assert(RegList.size() && "RegList should not be empty");
+ if (isVector)
+ OS << "\t.vsave\t{";
+ else
+ OS << "\t.save\t{";
+
+ InstPrinter->printRegName(OS, RegList[0]);
+
+ for (unsigned i = 1, e = RegList.size(); i != e; ++i) {
+ OS << ", ";
+ InstPrinter->printRegName(OS, RegList[i]);
+ }
+
+ OS << "}";
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitTCEntry(const MCSymbol &S) {
+ OS << "\t.tc ";
+ OS << S.getName();
+ OS << "[TC],";
+ OS << S.getName();
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
+ assert(getCurrentSection() && "Cannot emit contents before setting section!");
+
+ // Show the encoding in a comment if we have a code emitter.
+ if (Emitter)
+ AddEncodingComment(Inst);
+
+ // Show the MCInst if enabled.
+ if (ShowInst) {
+ Inst.dump_pretty(GetCommentOS(), &MAI, InstPrinter.get(), "\n ");
+ GetCommentOS() << "\n";
+ }
+
+ // If we have an AsmPrinter, use that to print, otherwise print the MCInst.
+ if (InstPrinter)
+ InstPrinter->printInst(&Inst, OS, "");
+ else
+ Inst.print(OS, &MAI);
+ 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();
+}
+
+/// 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::EmitRawText(StringRef String) {
+ if (!String.empty() && String.back() == '\n')
+ String = String.substr(0, String.size()-1);
+ OS << String;
+ EmitEOL();
+}
+
+void MCAsmStreamer::FinishImpl() {
+ // FIXME: This header is duplicated with MCObjectStreamer
+ // Dump out the dwarf file & directory tables and line tables.
+ const MCSymbol *LineSectionSymbol = NULL;
+ if (getContext().hasDwarfFiles() && !UseLoc)
+ LineSectionSymbol = MCDwarfFileTable::Emit(this);
+
+ // If we are generating dwarf for assembly source files dump out the sections.
+ if (getContext().getGenDwarfForAssembly())
+ MCGenDwarfInfo::Emit(this, LineSectionSymbol);
+
+ if (!UseCFI)
+ EmitFrames(false);
+}
+MCStreamer *llvm::createAsmStreamer(MCContext &Context,
+ formatted_raw_ostream &OS,
+ bool isVerboseAsm, bool useLoc,
+ bool useCFI, bool useDwarfDirectory,
+ MCInstPrinter *IP, MCCodeEmitter *CE,
+ MCAsmBackend *MAB, bool ShowInst) {
+ return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc, useCFI,
+ useDwarfDirectory, IP, CE, MAB, ShowInst);
+}
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