//===----------------------------------------------------------------------===//
#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/MCSectionCOFF.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
formatted_raw_ostream &OS;
const MCAsmInfo *MAI;
private:
- OwningPtr<MCInstPrinter> InstPrinter;
- OwningPtr<MCCodeEmitter> Emitter;
- OwningPtr<MCAsmBackend> AsmBackend;
+ 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 UseLoc : 1;
unsigned UseCFI : 1;
unsigned UseDwarfDirectory : 1;
EHPrivateExtern = 1 << 2 };
DenseMap<const MCSymbol*, unsigned> FlagMap;
- bool needsSet(const MCExpr *Value);
+ DenseMap<const MCSymbol*, MCSymbolData*> SymbolMap;
void EmitRegisterName(int64_t Register);
- virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
- virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
+ void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) override;
+ void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override;
public:
MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
- bool isVerboseAsm, bool useLoc, bool useCFI,
- bool useDwarfDirectory,
+ bool isVerboseAsm, 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) {
+ MCAsmBackend *asmbackend, bool showInst)
+ : MCStreamer(Context), OS(os), MAI(Context.getAsmInfo()),
+ InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
+ CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
+ ShowInst(showInst), UseCFI(useCFI),
+ UseDwarfDirectory(useDwarfDirectory) {
if (InstPrinter && IsVerboseAsm)
InstPrinter->setCommentStream(CommentStream);
}
/// isVerboseAsm - Return true if this streamer supports verbose assembly at
/// all.
- virtual bool isVerboseAsm() const { return IsVerboseAsm; }
+ bool isVerboseAsm() const override { return IsVerboseAsm; }
/// hasRawTextSupport - We support EmitRawText.
- virtual bool hasRawTextSupport() const { return true; }
+ 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.
- virtual void AddComment(const Twine &T);
+ void AddComment(const Twine &T) override;
/// AddEncodingComment - Add a comment showing the encoding of an instruction.
- virtual void AddEncodingComment(const MCInst &Inst);
+ 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.
- virtual raw_ostream &GetCommentOS() {
+ 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.
- virtual void AddBlankLine() {
+ void AddBlankLine() override {
EmitEOL();
}
/// @name MCStreamer Interface
/// @{
- virtual void ChangeSection(const MCSection *Section,
- const MCExpr *Subsection);
-
- virtual void InitSections() {
- InitToTextSection();
- }
-
- virtual void InitToTextSection() {
- SwitchSection(getContext().getObjectFileInfo()->getTextSection());
- }
-
- 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);
+ void ChangeSection(const MCSection *Section,
+ const MCExpr *Subsection) override;
+
+ void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) override;
+ void EmitLabel(MCSymbol *Symbol) override;
+ void EmitDebugLabel(MCSymbol *Symbol) override;
+
+ void EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol) 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;
+ void EmitDwarfAdvanceLineAddr(int64_t LineDelta, const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize) override;
+ void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
+ const MCSymbol *Label) 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 EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
+ void EmitCOFFSecRel32(MCSymbol const *Symbol) override;
+ void EmitELFSize(MCSymbol *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.
- 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);
-
- virtual void EmitValueImpl(const MCExpr *Value, unsigned Size);
- virtual void EmitIntValue(uint64_t Value, unsigned Size);
-
- 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);
-
- 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();
+ void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override;
+
+ void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = nullptr,
+ uint64_t Size = 0, unsigned ByteAlignment = 0) override;
+
+ void EmitTBSSSymbol (const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment = 0) override;
+
+ void EmitBytes(StringRef Data) override;
+
+ void EmitValueImpl(const MCExpr *Value, unsigned Size) 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;
+
+ bool 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 EmitCFISignalFrame() override;
+ void EmitCFIUndefined(int64_t Register) override;
+ void EmitCFIRegister(int64_t Register1, int64_t Register2) override;
+ void EmitCFIWindowSave() override;
+
+ void EmitWin64EHStartProc(const MCSymbol *Symbol) override;
+ void EmitWin64EHEndProc() override;
+ void EmitWin64EHStartChained() override;
+ void EmitWin64EHEndChained() override;
+ void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
+ bool Except) override;
+ void EmitWin64EHHandlerData() override;
+ void EmitWin64EHPushReg(unsigned Register) override;
+ void EmitWin64EHSetFrame(unsigned Register, unsigned Offset) override;
+ void EmitWin64EHAllocStack(unsigned Size) override;
+ void EmitWin64EHSaveReg(unsigned Register, unsigned Offset) override;
+ void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) override;
+ void EmitWin64EHPushFrame(bool Code) override;
+ void EmitWin64EHEndProlog() override;
+
+ void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
+
+ void EmitBundleAlignMode(unsigned AlignPow2) override;
+ void EmitBundleLock(bool AlignToEnd) override;
+ void EmitBundleUnlock() 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.
- virtual void EmitRawText(StringRef String);
-
- virtual void FinishImpl();
+ void EmitRawTextImpl(StringRef String) override;
- /// @}
+ void FinishImpl() override;
- static bool classof(const MCStreamer *S) {
- return S->getKind() == SK_AsmStreamer;
- }
+ virtual MCSymbolData &getOrCreateSymbolData(const MCSymbol *Symbol) override;
};
} // end anonymous namespace.
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(const MCSection *Section,
const MCExpr *Subsection) {
assert(Section && "Cannot switch to a null section!");
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;
+ OS << **It;
+ }
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitDebugLabel(MCSymbol *Symbol) {
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
MCStreamer::EmitDebugLabel(Symbol);
EmitEOL();
}
+void MCAsmStreamer::EmitVersionMin(MCVersionMinType Kind, unsigned Major,
+ unsigned Minor, unsigned Update) {
+ switch (Kind) {
+ 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 << *Symbol << " = " << *Value;
EmitEOL();
- // FIXME: Lift context changes into super class.
- Symbol->setVariableValue(Value);
+ MCStreamer::EmitAssignment(Symbol, Value);
}
void MCAsmStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {
}
-void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+bool MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
switch (Attribute) {
case MCSA_Invalid: llvm_unreachable("Invalid symbol attribute");
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");
+ if (!MAI->hasDotTypeDotSizeDirective())
+ return false; // Symbol attribute not supported
OS << "\t.type\t" << *Symbol << ','
<< ((MAI->getCommentString()[0] != '@') ? '@' : '%');
switch (Attribute) {
- default: llvm_unreachable("Unknown ELF .type");
+ 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_TypeGnuUniqueObject: OS << "gnu_unique_object"; break;
}
EmitEOL();
- return;
+ return true;
case MCSA_Global: // .globl/.global
OS << MAI->getGlobalDirective();
FlagMap[Symbol] |= EHGlobal;
OS << *Symbol;
EmitEOL();
+
+ return true;
}
void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
EmitEOL();
}
+void MCAsmStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
+ OS << "\t.secidx\t" << *Symbol;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
- OS << "\t.secrel32\t" << *Symbol << '\n';
+ OS << "\t.secrel32\t" << *Symbol;
EmitEOL();
}
void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
+ // Common symbols do not belong to any actual section.
+ AssignSection(Symbol, nullptr);
+
OS << "\t.comm\t" << *Symbol << ',' << Size;
if (ByteAlignment != 0) {
if (MAI->getCOMMDirectiveAlignmentIsInBytes())
/// @param Size - The size of the common symbol.
void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlign) {
+ // Common symbols do not belong to any actual section.
+ AssignSection(Symbol, nullptr);
+
OS << "\t.lcomm\t" << *Symbol << ',' << Size;
if (ByteAlign > 1) {
switch (MAI->getLCOMMDirectiveAlignmentType()) {
void MCAsmStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
+ if (Symbol)
+ AssignSection(Symbol, Section);
+
// Note: a .zerofill directive does not switch sections.
OS << ".zerofill ";
const MCSectionMachO *MOSection = ((const MCSectionMachO*)Section);
OS << MOSection->getSegmentName() << "," << MOSection->getSectionName();
- if (Symbol != NULL) {
+ if (Symbol) {
OS << ',' << *Symbol << ',' << Size;
if (ByteAlignment != 0)
OS << ',' << Log2_32(ByteAlignment);
// e.g. _a.
void MCAsmStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
- assert(Symbol != NULL && "Symbol shouldn't be NULL!");
+ AssignSection(Symbol, Section);
+
+ 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 << ", " << Size;
OS << MAI->getAsciiDirective();
}
- OS << ' ';
PrintQuotedString(Data, OS);
EmitEOL();
}
}
void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size) {
+ assert(Size <= 8 && "Invalid size");
assert(getCurrentSection().first &&
"Cannot emit contents before setting section!");
- const char *Directive = 0;
+ 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();
- // If the target doesn't support 64-bit data, emit as two 32-bit halves.
- if (Directive) 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.");
- if (MAI->isLittleEndian()) {
- EmitIntValue((uint32_t)(IntValue >> 0 ), 4);
- EmitIntValue((uint32_t)(IntValue >> 32), 4);
- } else {
- EmitIntValue((uint32_t)(IntValue >> 32), 4);
- EmitIntValue((uint32_t)(IntValue >> 0 ), 4);
+
+ // 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.
+ ValueToEmit &= ~0ULL >> (64 - EmissionSize * 8);
+ EmitIntValue(ValueToEmit, EmissionSize);
+ Emitted += EmissionSize;
}
return;
}
}
void MCAsmStreamer::EmitGPRel64Value(const MCExpr *Value) {
- assert(MAI->getGPRel64Directive() != 0);
+ assert(MAI->getGPRel64Directive() != nullptr);
OS << MAI->getGPRel64Directive() << *Value;
EmitEOL();
}
void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
- assert(MAI->getGPRel32Directive() != 0);
+ assert(MAI->getGPRel32Directive() != nullptr);
OS << MAI->getGPRel32Directive() << *Value;
EmitEOL();
}
// 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!");
+ 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())
EmitEOL();
}
-bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
- StringRef Filename, unsigned CUID) {
+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))
- return EmitDwarfFileDirective(FileNo, "", Filename, CUID);
-
- SmallString<128> FullPathName = Directory;
- sys::path::append(FullPathName, Filename);
- return EmitDwarfFileDirective(FileNo, "", FullPathName, CUID);
+ Directory = "";
+ else {
+ FullPathName = Directory;
+ sys::path::append(FullPathName, Filename);
+ Directory = "";
+ Filename = FullPathName;
+ }
}
- 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;
+ OS << "\t.file\t" << FileNo << ' ';
+ if (!Directory.empty()) {
+ PrintQuotedString(Directory, OS);
+ OS << ' ';
}
- return this->MCStreamer::EmitDwarfFileDirective(FileNo, Directory, Filename,
- CUID);
+ PrintQuotedString(Filename, OS);
+ EmitEOL();
+
+ return FileNo;
}
void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
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 (Isa)
- OS << "isa " << Isa;
+ OS << " isa " << Isa;
if (Discriminator)
- OS << "discriminator " << Discriminator;
+ OS << " discriminator " << Discriminator;
if (IsVerboseAsm) {
OS.PadToColumn(MAI->getCommentColumn());
EmitEOL();
}
+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_startproc";
+ if (Frame.IsSimple)
+ OS << " simple";
EmitEOL();
}
EmitEOL();
}
+void MCAsmStreamer::EmitCFIWindowSave() {
+ MCStreamer::EmitCFIWindowSave();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_window_save";
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
MCStreamer::EmitWin64EHStartProc(Symbol);
EmitEOL();
}
-void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
+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);
+ Emitter->EncodeInstruction(Inst, VecOS, Fixups, STI);
VecOS.flush();
// If we are showing fixups, create symbolic markers in the encoded
}
}
-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) {
+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);
+ AddEncodingComment(Inst, STI);
// Show the MCInst if enabled.
if (ShowInst) {
/// 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) {
+void MCAsmStreamer::EmitRawTextImpl(StringRef String) {
if (!String.empty() && String.back() == '\n')
String = String.substr(0, String.size()-1);
OS << String;
}
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);
+ 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);
+ }
+ }
if (!UseCFI)
- EmitFrames(false);
+ EmitFrames(AsmBackend.get(), false);
+}
+
+MCSymbolData &MCAsmStreamer::getOrCreateSymbolData(const MCSymbol *Symbol) {
+ MCSymbolData *&Entry = SymbolMap[Symbol];
+
+ if (!Entry)
+ Entry = new MCSymbolData(*Symbol, nullptr, 0, nullptr);
+
+ return *Entry;
}
+
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);
+ bool isVerboseAsm, bool useCFI,
+ bool useDwarfDirectory, MCInstPrinter *IP,
+ MCCodeEmitter *CE, MCAsmBackend *MAB,
+ bool ShowInst) {
+ return new MCAsmStreamer(Context, OS, isVerboseAsm, useCFI, useDwarfDirectory,
+ IP, CE, MAB, ShowInst);
}
projects / oota-llvm.git / blobdiff