forked from OSchip/llvm-project
1937 lines
62 KiB
C++
1937 lines
62 KiB
C++
//===- lib/MC/MCAsmStreamer.cpp - Text Assembly Output ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCAsmBackend.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCCodeEmitter.h"
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#include "llvm/MC/MCCodeView.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCFixupKindInfo.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSectionMachO.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Support/LEB128.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/TargetRegistry.h"
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#include <cctype>
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using namespace llvm;
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namespace {
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class MCAsmStreamer final : public MCStreamer {
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std::unique_ptr<formatted_raw_ostream> OSOwner;
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formatted_raw_ostream &OS;
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const MCAsmInfo *MAI;
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std::unique_ptr<MCInstPrinter> InstPrinter;
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std::unique_ptr<MCAssembler> Assembler;
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SmallString<128> ExplicitCommentToEmit;
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SmallString<128> CommentToEmit;
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raw_svector_ostream CommentStream;
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raw_null_ostream NullStream;
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unsigned IsVerboseAsm : 1;
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unsigned ShowInst : 1;
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unsigned UseDwarfDirectory : 1;
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void EmitRegisterName(int64_t Register);
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void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) override;
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void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override;
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public:
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MCAsmStreamer(MCContext &Context, std::unique_ptr<formatted_raw_ostream> os,
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bool isVerboseAsm, bool useDwarfDirectory,
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MCInstPrinter *printer, std::unique_ptr<MCCodeEmitter> emitter,
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std::unique_ptr<MCAsmBackend> asmbackend, bool showInst)
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: MCStreamer(Context), OSOwner(std::move(os)), OS(*OSOwner),
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MAI(Context.getAsmInfo()), InstPrinter(printer),
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Assembler(llvm::make_unique<MCAssembler>(
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Context, std::move(asmbackend), std::move(emitter),
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(asmbackend) ? asmbackend->createObjectWriter(NullStream)
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: nullptr)),
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CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
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ShowInst(showInst), UseDwarfDirectory(useDwarfDirectory) {
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assert(InstPrinter);
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if (IsVerboseAsm)
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InstPrinter->setCommentStream(CommentStream);
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}
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MCAssembler &getAssembler() { return *Assembler; }
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MCAssembler *getAssemblerPtr() override { return nullptr; }
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inline void EmitEOL() {
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// Dump Explicit Comments here.
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emitExplicitComments();
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// If we don't have any comments, just emit a \n.
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if (!IsVerboseAsm) {
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OS << '\n';
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return;
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}
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EmitCommentsAndEOL();
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}
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void EmitSyntaxDirective() override;
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void EmitCommentsAndEOL();
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/// Return true if this streamer supports verbose assembly at all.
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bool isVerboseAsm() const override { return IsVerboseAsm; }
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/// Do we support EmitRawText?
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bool hasRawTextSupport() const override { return true; }
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/// Add a comment that can be emitted to the generated .s file to make the
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/// output of the compiler more readable. This only affects the MCAsmStreamer
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/// and only when verbose assembly output is enabled.
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void AddComment(const Twine &T, bool EOL = true) override;
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/// Add a comment showing the encoding of an instruction.
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void AddEncodingComment(const MCInst &Inst, const MCSubtargetInfo &);
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/// Return a raw_ostream that comments can be written to.
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/// Unlike AddComment, you are required to terminate comments with \n if you
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/// use this method.
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raw_ostream &GetCommentOS() override {
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if (!IsVerboseAsm)
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return nulls(); // Discard comments unless in verbose asm mode.
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return CommentStream;
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}
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void emitRawComment(const Twine &T, bool TabPrefix = true) override;
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void addExplicitComment(const Twine &T) override;
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void emitExplicitComments() override;
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/// Emit a blank line to a .s file to pretty it up.
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void AddBlankLine() override {
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EmitEOL();
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}
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/// @name MCStreamer Interface
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/// @{
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void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
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void emitELFSymverDirective(StringRef AliasName,
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const MCSymbol *Aliasee) override;
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void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) override;
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void EmitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
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void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
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void EmitLinkerOptions(ArrayRef<std::string> Options) override;
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void EmitDataRegion(MCDataRegionType Kind) override;
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void EmitVersionMin(MCVersionMinType Kind, unsigned Major, unsigned Minor,
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unsigned Update, VersionTuple SDKVersion) override;
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void EmitBuildVersion(unsigned Platform, unsigned Major, unsigned Minor,
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unsigned Update, VersionTuple SDKVersion) override;
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void EmitThumbFunc(MCSymbol *Func) override;
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void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
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void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
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bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
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void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
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void BeginCOFFSymbolDef(const MCSymbol *Symbol) override;
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void EmitCOFFSymbolStorageClass(int StorageClass) override;
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void EmitCOFFSymbolType(int Type) override;
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void EndCOFFSymbolDef() override;
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void EmitCOFFSafeSEH(MCSymbol const *Symbol) override;
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void EmitCOFFSymbolIndex(MCSymbol const *Symbol) override;
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void EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
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void EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) override;
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void EmitCOFFImgRel32(MCSymbol const *Symbol, int64_t Offset) override;
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void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
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void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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/// Emit a local common (.lcomm) symbol.
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///
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/// @param Symbol - The common symbol to emit.
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/// @param Size - The size of the common symbol.
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/// @param ByteAlignment - The alignment of the common symbol in bytes.
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void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
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uint64_t Size = 0, unsigned ByteAlignment = 0,
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SMLoc Loc = SMLoc()) override;
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void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment = 0) override;
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void EmitBinaryData(StringRef Data) override;
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void EmitBytes(StringRef Data) override;
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void EmitValueImpl(const MCExpr *Value, unsigned Size,
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SMLoc Loc = SMLoc()) override;
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void EmitIntValue(uint64_t Value, unsigned Size) override;
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void EmitULEB128Value(const MCExpr *Value) override;
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void EmitSLEB128Value(const MCExpr *Value) override;
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void EmitDTPRel32Value(const MCExpr *Value) override;
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void EmitDTPRel64Value(const MCExpr *Value) override;
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void EmitTPRel32Value(const MCExpr *Value) override;
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void EmitTPRel64Value(const MCExpr *Value) override;
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void EmitGPRel64Value(const MCExpr *Value) override;
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void EmitGPRel32Value(const MCExpr *Value) override;
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void emitFill(const MCExpr &NumBytes, uint64_t FillValue,
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SMLoc Loc = SMLoc()) override;
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void emitFill(const MCExpr &NumValues, int64_t Size, int64_t Expr,
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SMLoc Loc = SMLoc()) override;
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void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
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unsigned ValueSize = 1,
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unsigned MaxBytesToEmit = 0) override;
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void EmitCodeAlignment(unsigned ByteAlignment,
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unsigned MaxBytesToEmit = 0) override;
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void emitValueToOffset(const MCExpr *Offset,
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unsigned char Value,
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SMLoc Loc) override;
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void EmitFileDirective(StringRef Filename) override;
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Expected<unsigned> tryEmitDwarfFileDirective(unsigned FileNo,
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StringRef Directory,
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StringRef Filename,
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Optional<MD5::MD5Result> Checksum = None,
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Optional<StringRef> Source = None,
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unsigned CUID = 0) override;
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void emitDwarfFile0Directive(StringRef Directory, StringRef Filename,
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Optional<MD5::MD5Result> Checksum,
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Optional<StringRef> Source,
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unsigned CUID = 0) override;
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void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
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unsigned Column, unsigned Flags,
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unsigned Isa, unsigned Discriminator,
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StringRef FileName) override;
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MCSymbol *getDwarfLineTableSymbol(unsigned CUID) override;
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bool EmitCVFileDirective(unsigned FileNo, StringRef Filename,
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ArrayRef<uint8_t> Checksum,
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unsigned ChecksumKind) override;
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bool EmitCVFuncIdDirective(unsigned FuncId) override;
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bool EmitCVInlineSiteIdDirective(unsigned FunctionId, unsigned IAFunc,
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unsigned IAFile, unsigned IALine,
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unsigned IACol, SMLoc Loc) override;
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void EmitCVLocDirective(unsigned FunctionId, unsigned FileNo, unsigned Line,
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unsigned Column, bool PrologueEnd, bool IsStmt,
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StringRef FileName, SMLoc Loc) override;
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void EmitCVLinetableDirective(unsigned FunctionId, const MCSymbol *FnStart,
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const MCSymbol *FnEnd) override;
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void EmitCVInlineLinetableDirective(unsigned PrimaryFunctionId,
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unsigned SourceFileId,
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unsigned SourceLineNum,
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const MCSymbol *FnStartSym,
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const MCSymbol *FnEndSym) override;
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void EmitCVDefRangeDirective(
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ArrayRef<std::pair<const MCSymbol *, const MCSymbol *>> Ranges,
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StringRef FixedSizePortion) override;
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void EmitCVStringTableDirective() override;
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void EmitCVFileChecksumsDirective() override;
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void EmitCVFileChecksumOffsetDirective(unsigned FileNo) override;
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void EmitCVFPOData(const MCSymbol *ProcSym, SMLoc L) override;
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void EmitIdent(StringRef IdentString) override;
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void EmitCFIBKeyFrame() override;
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void EmitCFISections(bool EH, bool Debug) override;
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void EmitCFIDefCfa(int64_t Register, int64_t Offset) override;
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void EmitCFIDefCfaOffset(int64_t Offset) override;
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void EmitCFIDefCfaRegister(int64_t Register) override;
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void EmitCFIOffset(int64_t Register, int64_t Offset) override;
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void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding) override;
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void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) override;
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void EmitCFIRememberState() override;
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void EmitCFIRestoreState() override;
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void EmitCFIRestore(int64_t Register) override;
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void EmitCFISameValue(int64_t Register) override;
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void EmitCFIRelOffset(int64_t Register, int64_t Offset) override;
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void EmitCFIAdjustCfaOffset(int64_t Adjustment) override;
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void EmitCFIEscape(StringRef Values) override;
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void EmitCFIGnuArgsSize(int64_t Size) override;
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void EmitCFISignalFrame() override;
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void EmitCFIUndefined(int64_t Register) override;
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void EmitCFIRegister(int64_t Register1, int64_t Register2) override;
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void EmitCFIWindowSave() override;
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void EmitCFINegateRAState() override;
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void EmitCFIReturnColumn(int64_t Register) override;
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void EmitWinCFIStartProc(const MCSymbol *Symbol, SMLoc Loc) override;
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void EmitWinCFIEndProc(SMLoc Loc) override;
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void EmitWinCFIFuncletOrFuncEnd(SMLoc Loc) override;
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void EmitWinCFIStartChained(SMLoc Loc) override;
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void EmitWinCFIEndChained(SMLoc Loc) override;
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void EmitWinCFIPushReg(unsigned Register, SMLoc Loc) override;
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void EmitWinCFISetFrame(unsigned Register, unsigned Offset,
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SMLoc Loc) override;
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void EmitWinCFIAllocStack(unsigned Size, SMLoc Loc) override;
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void EmitWinCFISaveReg(unsigned Register, unsigned Offset,
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SMLoc Loc) override;
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void EmitWinCFISaveXMM(unsigned Register, unsigned Offset,
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SMLoc Loc) override;
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void EmitWinCFIPushFrame(bool Code, SMLoc Loc) override;
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void EmitWinCFIEndProlog(SMLoc Loc) override;
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void EmitWinEHHandler(const MCSymbol *Sym, bool Unwind, bool Except,
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SMLoc Loc) override;
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void EmitWinEHHandlerData(SMLoc Loc) override;
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void emitCGProfileEntry(const MCSymbolRefExpr *From,
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const MCSymbolRefExpr *To, uint64_t Count) override;
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void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
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void EmitBundleAlignMode(unsigned AlignPow2) override;
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void EmitBundleLock(bool AlignToEnd) override;
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void EmitBundleUnlock() override;
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bool EmitRelocDirective(const MCExpr &Offset, StringRef Name,
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const MCExpr *Expr, SMLoc Loc,
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const MCSubtargetInfo &STI) override;
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void EmitAddrsig() override;
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void EmitAddrsigSym(const MCSymbol *Sym) override;
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/// If this file is backed by an assembly streamer, this dumps the specified
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/// string in the output .s file. This capability is indicated by the
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/// hasRawTextSupport() predicate.
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void EmitRawTextImpl(StringRef String) override;
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void FinishImpl() override;
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};
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} // end anonymous namespace.
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void MCAsmStreamer::AddComment(const Twine &T, bool EOL) {
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if (!IsVerboseAsm) return;
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T.toVector(CommentToEmit);
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if (EOL)
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CommentToEmit.push_back('\n'); // Place comment in a new line.
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}
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void MCAsmStreamer::EmitCommentsAndEOL() {
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if (CommentToEmit.empty() && CommentStream.GetNumBytesInBuffer() == 0) {
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OS << '\n';
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return;
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}
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StringRef Comments = CommentToEmit;
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assert(Comments.back() == '\n' &&
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"Comment array not newline terminated");
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do {
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// Emit a line of comments.
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OS.PadToColumn(MAI->getCommentColumn());
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size_t Position = Comments.find('\n');
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OS << MAI->getCommentString() << ' ' << Comments.substr(0, Position) <<'\n';
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Comments = Comments.substr(Position+1);
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} while (!Comments.empty());
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CommentToEmit.clear();
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}
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static inline int64_t truncateToSize(int64_t Value, unsigned Bytes) {
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assert(Bytes > 0 && Bytes <= 8 && "Invalid size!");
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return Value & ((uint64_t) (int64_t) -1 >> (64 - Bytes * 8));
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}
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void MCAsmStreamer::emitRawComment(const Twine &T, bool TabPrefix) {
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if (TabPrefix)
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OS << '\t';
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OS << MAI->getCommentString() << T;
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EmitEOL();
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}
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void MCAsmStreamer::addExplicitComment(const Twine &T) {
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StringRef c = T.getSingleStringRef();
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if (c.equals(StringRef(MAI->getSeparatorString())))
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return;
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if (c.startswith(StringRef("//"))) {
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ExplicitCommentToEmit.append("\t");
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ExplicitCommentToEmit.append(MAI->getCommentString());
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// drop //
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ExplicitCommentToEmit.append(c.slice(2, c.size()).str());
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} else if (c.startswith(StringRef("/*"))) {
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size_t p = 2, len = c.size() - 2;
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// emit each line in comment as separate newline.
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do {
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size_t newp = std::min(len, c.find_first_of("\r\n", p));
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ExplicitCommentToEmit.append("\t");
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ExplicitCommentToEmit.append(MAI->getCommentString());
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ExplicitCommentToEmit.append(c.slice(p, newp).str());
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// If we have another line in this comment add line
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if (newp < len)
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ExplicitCommentToEmit.append("\n");
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p = newp + 1;
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} while (p < len);
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} else if (c.startswith(StringRef(MAI->getCommentString()))) {
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ExplicitCommentToEmit.append("\t");
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ExplicitCommentToEmit.append(c.str());
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} else if (c.front() == '#') {
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ExplicitCommentToEmit.append("\t");
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ExplicitCommentToEmit.append(MAI->getCommentString());
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ExplicitCommentToEmit.append(c.slice(1, c.size()).str());
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} else
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assert(false && "Unexpected Assembly Comment");
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// full line comments immediately output
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if (c.back() == '\n')
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emitExplicitComments();
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}
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void MCAsmStreamer::emitExplicitComments() {
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StringRef Comments = ExplicitCommentToEmit;
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if (!Comments.empty())
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OS << Comments;
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ExplicitCommentToEmit.clear();
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}
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void MCAsmStreamer::ChangeSection(MCSection *Section,
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const MCExpr *Subsection) {
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assert(Section && "Cannot switch to a null section!");
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if (MCTargetStreamer *TS = getTargetStreamer()) {
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TS->changeSection(getCurrentSectionOnly(), Section, Subsection, OS);
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} else {
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Section->PrintSwitchToSection(
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*MAI, getContext().getObjectFileInfo()->getTargetTriple(), OS,
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Subsection);
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}
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}
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void MCAsmStreamer::emitELFSymverDirective(StringRef AliasName,
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const MCSymbol *Aliasee) {
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OS << ".symver ";
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Aliasee->print(OS, MAI);
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OS << ", " << AliasName;
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EmitEOL();
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}
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void MCAsmStreamer::EmitLabel(MCSymbol *Symbol, SMLoc Loc) {
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MCStreamer::EmitLabel(Symbol, Loc);
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Symbol->print(OS, MAI);
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OS << MAI->getLabelSuffix();
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EmitEOL();
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}
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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 (const MCSymbol *Arg : Args) {
|
|
if (!IsFirst)
|
|
OS << ", ";
|
|
IsFirst = false;
|
|
Arg->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 << '"';
|
|
}
|
|
EmitEOL();
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
static const char *getVersionMinDirective(MCVersionMinType Type) {
|
|
switch (Type) {
|
|
case MCVM_WatchOSVersionMin: return ".watchos_version_min";
|
|
case MCVM_TvOSVersionMin: return ".tvos_version_min";
|
|
case MCVM_IOSVersionMin: return ".ios_version_min";
|
|
case MCVM_OSXVersionMin: return ".macosx_version_min";
|
|
}
|
|
llvm_unreachable("Invalid MC version min type");
|
|
}
|
|
|
|
static void EmitSDKVersionSuffix(raw_ostream &OS,
|
|
const VersionTuple &SDKVersion) {
|
|
if (SDKVersion.empty())
|
|
return;
|
|
OS << '\t' << "sdk_version " << SDKVersion.getMajor();
|
|
if (auto Minor = SDKVersion.getMinor()) {
|
|
OS << ", " << *Minor;
|
|
if (auto Subminor = SDKVersion.getSubminor()) {
|
|
OS << ", " << *Subminor;
|
|
}
|
|
}
|
|
}
|
|
|
|
void MCAsmStreamer::EmitVersionMin(MCVersionMinType Type, unsigned Major,
|
|
unsigned Minor, unsigned Update,
|
|
VersionTuple SDKVersion) {
|
|
OS << '\t' << getVersionMinDirective(Type) << ' ' << Major << ", " << Minor;
|
|
if (Update)
|
|
OS << ", " << Update;
|
|
EmitSDKVersionSuffix(OS, SDKVersion);
|
|
EmitEOL();
|
|
}
|
|
|
|
static const char *getPlatformName(MachO::PlatformType Type) {
|
|
switch (Type) {
|
|
case MachO::PLATFORM_MACOS: return "macos";
|
|
case MachO::PLATFORM_IOS: return "ios";
|
|
case MachO::PLATFORM_TVOS: return "tvos";
|
|
case MachO::PLATFORM_WATCHOS: return "watchos";
|
|
case MachO::PLATFORM_BRIDGEOS: return "bridgeos";
|
|
case MachO::PLATFORM_MACCATALYST: return "maccatalyst";
|
|
case MachO::PLATFORM_IOSSIMULATOR: return "iossimulator";
|
|
case MachO::PLATFORM_TVOSSIMULATOR: return "tvossimulator";
|
|
case MachO::PLATFORM_WATCHOSSIMULATOR: return "watchossimulator";
|
|
}
|
|
llvm_unreachable("Invalid Mach-O platform type");
|
|
}
|
|
|
|
void MCAsmStreamer::EmitBuildVersion(unsigned Platform, unsigned Major,
|
|
unsigned Minor, unsigned Update,
|
|
VersionTuple SDKVersion) {
|
|
const char *PlatformName = getPlatformName((MachO::PlatformType)Platform);
|
|
OS << "\t.build_version " << PlatformName << ", " << Major << ", " << Minor;
|
|
if (Update)
|
|
OS << ", " << Update;
|
|
EmitSDKVersionSuffix(OS, SDKVersion);
|
|
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) {
|
|
// Do not emit a .set on inlined target assignments.
|
|
bool EmitSet = true;
|
|
if (auto *E = dyn_cast<MCTargetExpr>(Value))
|
|
if (E->inlineAssignedExpr())
|
|
EmitSet = false;
|
|
if (EmitSet) {
|
|
OS << ".set ";
|
|
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 << "notype"; 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_AltEntry: OS << "\t.alt_entry\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;
|
|
case MCSA_Cold:
|
|
// Assemblers currently do not support a .cold directive.
|
|
return false;
|
|
}
|
|
|
|
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";
|
|
EmitEOL();
|
|
}
|
|
// 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::EmitCOFFSymbolIndex(MCSymbol const *Symbol) {
|
|
OS << "\t.symidx\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, uint64_t Offset) {
|
|
OS << "\t.secrel32\t";
|
|
Symbol->print(OS, MAI);
|
|
if (Offset != 0)
|
|
OS << '+' << Offset;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCOFFImgRel32(MCSymbol const *Symbol, int64_t Offset) {
|
|
OS << "\t.rva\t";
|
|
Symbol->print(OS, MAI);
|
|
if (Offset > 0)
|
|
OS << '+' << Offset;
|
|
else if (Offset < 0)
|
|
OS << '-' << -Offset;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::emitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
|
|
assert(MAI->hasDotTypeDotSizeDirective());
|
|
OS << "\t.size\t";
|
|
Symbol->print(OS, MAI);
|
|
OS << ", ";
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
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,
|
|
SMLoc Loc) {
|
|
if (Symbol)
|
|
AssignFragment(Symbol, &Section->getDummyFragment());
|
|
|
|
// Note: a .zerofill directive does not switch sections.
|
|
OS << ".zerofill ";
|
|
|
|
assert(Section->getVariant() == MCSection::SV_MachO &&
|
|
".zerofill is a Mach-O specific directive");
|
|
// 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.
|
|
|
|
assert(Section->getVariant() == MCSection::SV_MachO &&
|
|
".zerofill is a Mach-O specific directive");
|
|
// 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(getCurrentSectionOnly() &&
|
|
"Cannot emit contents before setting section!");
|
|
if (Data.empty()) return;
|
|
|
|
// If only single byte is provided or no ascii or asciz directives is
|
|
// supported, emit as vector of 8bits data.
|
|
if (Data.size() == 1 ||
|
|
!(MAI->getAscizDirective() || MAI->getAsciiDirective())) {
|
|
if (MCTargetStreamer *TS = getTargetStreamer()) {
|
|
TS->emitRawBytes(Data);
|
|
} else {
|
|
const char *Directive = MAI->getData8bitsDirective();
|
|
for (const unsigned char C : Data.bytes()) {
|
|
OS << Directive << (unsigned)C;
|
|
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::EmitBinaryData(StringRef Data) {
|
|
// This is binary data. Print it in a grid of hex bytes for readability.
|
|
const size_t Cols = 4;
|
|
for (size_t I = 0, EI = alignTo(Data.size(), Cols); I < EI; I += Cols) {
|
|
size_t J = I, EJ = std::min(I + Cols, Data.size());
|
|
assert(EJ > 0);
|
|
OS << MAI->getData8bitsDirective();
|
|
for (; J < EJ - 1; ++J)
|
|
OS << format("0x%02x", uint8_t(Data[J])) << ", ";
|
|
OS << format("0x%02x", uint8_t(Data[J]));
|
|
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(getCurrentSectionOnly() &&
|
|
"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 or equal to "Size" are invalid, we use the greatest
|
|
// power of 2 that is less than "Size" 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
|
|
// Size.
|
|
unsigned EmissionSize = PowerOf2Floor(std::min(Remaining, Size - 1));
|
|
// 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;
|
|
if (MCTargetStreamer *TS = getTargetStreamer()) {
|
|
TS->emitValue(Value);
|
|
} else {
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
}
|
|
|
|
void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value) {
|
|
int64_t IntValue;
|
|
if (Value->evaluateAsAbsolute(IntValue)) {
|
|
EmitULEB128IntValue(IntValue);
|
|
return;
|
|
}
|
|
OS << "\t.uleb128 ";
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value) {
|
|
int64_t IntValue;
|
|
if (Value->evaluateAsAbsolute(IntValue)) {
|
|
EmitSLEB128IntValue(IntValue);
|
|
return;
|
|
}
|
|
OS << "\t.sleb128 ";
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitDTPRel64Value(const MCExpr *Value) {
|
|
assert(MAI->getDTPRel64Directive() != nullptr);
|
|
OS << MAI->getDTPRel64Directive();
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitDTPRel32Value(const MCExpr *Value) {
|
|
assert(MAI->getDTPRel32Directive() != nullptr);
|
|
OS << MAI->getDTPRel32Directive();
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitTPRel64Value(const MCExpr *Value) {
|
|
assert(MAI->getTPRel64Directive() != nullptr);
|
|
OS << MAI->getTPRel64Directive();
|
|
Value->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitTPRel32Value(const MCExpr *Value) {
|
|
assert(MAI->getTPRel32Directive() != nullptr);
|
|
OS << MAI->getTPRel32Directive();
|
|
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();
|
|
}
|
|
|
|
void MCAsmStreamer::emitFill(const MCExpr &NumBytes, uint64_t FillValue,
|
|
SMLoc Loc) {
|
|
int64_t IntNumBytes;
|
|
if (NumBytes.evaluateAsAbsolute(IntNumBytes) && IntNumBytes == 0)
|
|
return;
|
|
|
|
if (const char *ZeroDirective = MAI->getZeroDirective()) {
|
|
// FIXME: Emit location directives
|
|
OS << ZeroDirective;
|
|
NumBytes.print(OS, MAI);
|
|
if (FillValue != 0)
|
|
OS << ',' << (int)FillValue;
|
|
EmitEOL();
|
|
return;
|
|
}
|
|
|
|
MCStreamer::emitFill(NumBytes, FillValue);
|
|
}
|
|
|
|
void MCAsmStreamer::emitFill(const MCExpr &NumValues, int64_t Size,
|
|
int64_t Expr, SMLoc Loc) {
|
|
// FIXME: Emit location directives
|
|
OS << "\t.fill\t";
|
|
NumValues.print(OS, MAI);
|
|
OS << ", " << Size << ", 0x";
|
|
OS.write_hex(truncateToSize(Expr, 4));
|
|
EmitEOL();
|
|
}
|
|
|
|
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.p2align\t";
|
|
break;
|
|
case 2:
|
|
OS << ".p2alignw ";
|
|
break;
|
|
case 4:
|
|
OS << ".p2alignl ";
|
|
break;
|
|
case 8:
|
|
llvm_unreachable("Unsupported alignment size!");
|
|
}
|
|
|
|
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,
|
|
SMLoc Loc) {
|
|
// 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();
|
|
}
|
|
|
|
static void printDwarfFileDirective(unsigned FileNo, StringRef Directory,
|
|
StringRef Filename,
|
|
Optional<MD5::MD5Result> Checksum,
|
|
Optional<StringRef> Source,
|
|
bool UseDwarfDirectory,
|
|
raw_svector_ostream &OS) {
|
|
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);
|
|
if (Checksum)
|
|
OS << " md5 0x" << Checksum->digest();
|
|
if (Source) {
|
|
OS << " source ";
|
|
PrintQuotedString(*Source, OS);
|
|
}
|
|
}
|
|
|
|
Expected<unsigned> MCAsmStreamer::tryEmitDwarfFileDirective(
|
|
unsigned FileNo, StringRef Directory, StringRef Filename,
|
|
Optional<MD5::MD5Result> Checksum, Optional<StringRef> Source, unsigned CUID) {
|
|
assert(CUID == 0 && "multiple CUs not supported by MCAsmStreamer");
|
|
|
|
MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
|
|
unsigned NumFiles = Table.getMCDwarfFiles().size();
|
|
Expected<unsigned> FileNoOrErr =
|
|
Table.tryGetFile(Directory, Filename, Checksum, Source,
|
|
getContext().getDwarfVersion(), FileNo);
|
|
if (!FileNoOrErr)
|
|
return FileNoOrErr.takeError();
|
|
FileNo = FileNoOrErr.get();
|
|
if (NumFiles == Table.getMCDwarfFiles().size())
|
|
return FileNo;
|
|
|
|
SmallString<128> Str;
|
|
raw_svector_ostream OS1(Str);
|
|
printDwarfFileDirective(FileNo, Directory, Filename, Checksum, Source,
|
|
UseDwarfDirectory, OS1);
|
|
|
|
if (MCTargetStreamer *TS = getTargetStreamer())
|
|
TS->emitDwarfFileDirective(OS1.str());
|
|
else
|
|
EmitRawText(OS1.str());
|
|
|
|
return FileNo;
|
|
}
|
|
|
|
void MCAsmStreamer::emitDwarfFile0Directive(StringRef Directory,
|
|
StringRef Filename,
|
|
Optional<MD5::MD5Result> Checksum,
|
|
Optional<StringRef> Source,
|
|
unsigned CUID) {
|
|
assert(CUID == 0);
|
|
// .file 0 is new for DWARF v5.
|
|
if (getContext().getDwarfVersion() < 5)
|
|
return;
|
|
// Inform MCDwarf about the root file.
|
|
getContext().setMCLineTableRootFile(CUID, Directory, Filename, Checksum,
|
|
Source);
|
|
|
|
SmallString<128> Str;
|
|
raw_svector_ostream OS1(Str);
|
|
printDwarfFileDirective(0, Directory, Filename, Checksum, Source,
|
|
UseDwarfDirectory, OS1);
|
|
|
|
if (MCTargetStreamer *TS = getTargetStreamer())
|
|
TS->emitDwarfFileDirective(OS1.str());
|
|
else
|
|
EmitRawText(OS1.str());
|
|
}
|
|
|
|
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 (MAI->supportsExtendedDwarfLocDirective()) {
|
|
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);
|
|
}
|
|
|
|
bool MCAsmStreamer::EmitCVFileDirective(unsigned FileNo, StringRef Filename,
|
|
ArrayRef<uint8_t> Checksum,
|
|
unsigned ChecksumKind) {
|
|
if (!getContext().getCVContext().addFile(*this, FileNo, Filename, Checksum,
|
|
ChecksumKind))
|
|
return false;
|
|
|
|
OS << "\t.cv_file\t" << FileNo << ' ';
|
|
PrintQuotedString(Filename, OS);
|
|
|
|
if (!ChecksumKind) {
|
|
EmitEOL();
|
|
return true;
|
|
}
|
|
|
|
OS << ' ';
|
|
PrintQuotedString(toHex(Checksum), OS);
|
|
OS << ' ' << ChecksumKind;
|
|
|
|
EmitEOL();
|
|
return true;
|
|
}
|
|
|
|
bool MCAsmStreamer::EmitCVFuncIdDirective(unsigned FuncId) {
|
|
OS << "\t.cv_func_id " << FuncId << '\n';
|
|
return MCStreamer::EmitCVFuncIdDirective(FuncId);
|
|
}
|
|
|
|
bool MCAsmStreamer::EmitCVInlineSiteIdDirective(unsigned FunctionId,
|
|
unsigned IAFunc,
|
|
unsigned IAFile,
|
|
unsigned IALine, unsigned IACol,
|
|
SMLoc Loc) {
|
|
OS << "\t.cv_inline_site_id " << FunctionId << " within " << IAFunc
|
|
<< " inlined_at " << IAFile << ' ' << IALine << ' ' << IACol << '\n';
|
|
return MCStreamer::EmitCVInlineSiteIdDirective(FunctionId, IAFunc, IAFile,
|
|
IALine, IACol, Loc);
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVLocDirective(unsigned FunctionId, unsigned FileNo,
|
|
unsigned Line, unsigned Column,
|
|
bool PrologueEnd, bool IsStmt,
|
|
StringRef FileName, SMLoc Loc) {
|
|
// Validate the directive.
|
|
if (!checkCVLocSection(FunctionId, FileNo, Loc))
|
|
return;
|
|
|
|
OS << "\t.cv_loc\t" << FunctionId << " " << FileNo << " " << Line << " "
|
|
<< Column;
|
|
if (PrologueEnd)
|
|
OS << " prologue_end";
|
|
|
|
if (IsStmt)
|
|
OS << " is_stmt 1";
|
|
|
|
if (IsVerboseAsm) {
|
|
OS.PadToColumn(MAI->getCommentColumn());
|
|
OS << MAI->getCommentString() << ' ' << FileName << ':' << Line << ':'
|
|
<< Column;
|
|
}
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVLinetableDirective(unsigned FunctionId,
|
|
const MCSymbol *FnStart,
|
|
const MCSymbol *FnEnd) {
|
|
OS << "\t.cv_linetable\t" << FunctionId << ", ";
|
|
FnStart->print(OS, MAI);
|
|
OS << ", ";
|
|
FnEnd->print(OS, MAI);
|
|
EmitEOL();
|
|
this->MCStreamer::EmitCVLinetableDirective(FunctionId, FnStart, FnEnd);
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVInlineLinetableDirective(unsigned PrimaryFunctionId,
|
|
unsigned SourceFileId,
|
|
unsigned SourceLineNum,
|
|
const MCSymbol *FnStartSym,
|
|
const MCSymbol *FnEndSym) {
|
|
OS << "\t.cv_inline_linetable\t" << PrimaryFunctionId << ' ' << SourceFileId
|
|
<< ' ' << SourceLineNum << ' ';
|
|
FnStartSym->print(OS, MAI);
|
|
OS << ' ';
|
|
FnEndSym->print(OS, MAI);
|
|
EmitEOL();
|
|
this->MCStreamer::EmitCVInlineLinetableDirective(
|
|
PrimaryFunctionId, SourceFileId, SourceLineNum, FnStartSym, FnEndSym);
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVDefRangeDirective(
|
|
ArrayRef<std::pair<const MCSymbol *, const MCSymbol *>> Ranges,
|
|
StringRef FixedSizePortion) {
|
|
OS << "\t.cv_def_range\t";
|
|
for (std::pair<const MCSymbol *, const MCSymbol *> Range : Ranges) {
|
|
OS << ' ';
|
|
Range.first->print(OS, MAI);
|
|
OS << ' ';
|
|
Range.second->print(OS, MAI);
|
|
}
|
|
OS << ", ";
|
|
PrintQuotedString(FixedSizePortion, OS);
|
|
EmitEOL();
|
|
this->MCStreamer::EmitCVDefRangeDirective(Ranges, FixedSizePortion);
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVStringTableDirective() {
|
|
OS << "\t.cv_stringtable";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVFileChecksumsDirective() {
|
|
OS << "\t.cv_filechecksums";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVFileChecksumOffsetDirective(unsigned FileNo) {
|
|
OS << "\t.cv_filechecksumoffset\t" << FileNo;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCVFPOData(const MCSymbol *ProcSym, SMLoc L) {
|
|
OS << "\t.cv_fpo_data\t";
|
|
ProcSym->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
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()) {
|
|
// User .cfi_* directives can use arbitrary DWARF register numbers, not
|
|
// just ones that map to LLVM register numbers and have known names.
|
|
// Fall back to using the original number directly if no name is known.
|
|
const MCRegisterInfo *MRI = getContext().getRegisterInfo();
|
|
int LLVMRegister = MRI->getLLVMRegNumFromEH(Register);
|
|
if (LLVMRegister != -1) {
|
|
InstPrinter->printRegName(OS, LLVMRegister);
|
|
return;
|
|
}
|
|
}
|
|
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::EmitCFIRestore(int64_t Register) {
|
|
MCStreamer::EmitCFIRestore(Register);
|
|
OS << "\t.cfi_restore ";
|
|
EmitRegisterName(Register);
|
|
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::EmitCFINegateRAState() {
|
|
MCStreamer::EmitCFINegateRAState();
|
|
OS << "\t.cfi_negate_ra_state";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCFIReturnColumn(int64_t Register) {
|
|
MCStreamer::EmitCFIReturnColumn(Register);
|
|
OS << "\t.cfi_return_column " << Register;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitCFIBKeyFrame() {
|
|
MCStreamer::EmitCFIBKeyFrame();
|
|
OS << "\t.cfi_b_key_frame";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIStartProc(const MCSymbol *Symbol, SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIStartProc(Symbol, Loc);
|
|
|
|
OS << ".seh_proc ";
|
|
Symbol->print(OS, MAI);
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIEndProc(SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIEndProc(Loc);
|
|
|
|
OS << "\t.seh_endproc";
|
|
EmitEOL();
|
|
}
|
|
|
|
// TODO: Implement
|
|
void MCAsmStreamer::EmitWinCFIFuncletOrFuncEnd(SMLoc Loc) {
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIStartChained(SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIStartChained(Loc);
|
|
|
|
OS << "\t.seh_startchained";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIEndChained(SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIEndChained(Loc);
|
|
|
|
OS << "\t.seh_endchained";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinEHHandler(const MCSymbol *Sym, bool Unwind,
|
|
bool Except, SMLoc Loc) {
|
|
MCStreamer::EmitWinEHHandler(Sym, Unwind, Except, Loc);
|
|
|
|
OS << "\t.seh_handler ";
|
|
Sym->print(OS, MAI);
|
|
if (Unwind)
|
|
OS << ", @unwind";
|
|
if (Except)
|
|
OS << ", @except";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinEHHandlerData(SMLoc Loc) {
|
|
MCStreamer::EmitWinEHHandlerData(Loc);
|
|
|
|
// 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 *TextSec = &CurFrame->Function->getSection();
|
|
MCSection *XData = getAssociatedXDataSection(TextSec);
|
|
SwitchSectionNoChange(XData);
|
|
|
|
OS << "\t.seh_handlerdata";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIPushReg(unsigned Register, SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIPushReg(Register, Loc);
|
|
|
|
OS << "\t.seh_pushreg " << Register;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFISetFrame(unsigned Register, unsigned Offset,
|
|
SMLoc Loc) {
|
|
MCStreamer::EmitWinCFISetFrame(Register, Offset, Loc);
|
|
|
|
OS << "\t.seh_setframe " << Register << ", " << Offset;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIAllocStack(unsigned Size, SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIAllocStack(Size, Loc);
|
|
|
|
OS << "\t.seh_stackalloc " << Size;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFISaveReg(unsigned Register, unsigned Offset,
|
|
SMLoc Loc) {
|
|
MCStreamer::EmitWinCFISaveReg(Register, Offset, Loc);
|
|
|
|
OS << "\t.seh_savereg " << Register << ", " << Offset;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFISaveXMM(unsigned Register, unsigned Offset,
|
|
SMLoc Loc) {
|
|
MCStreamer::EmitWinCFISaveXMM(Register, Offset, Loc);
|
|
|
|
OS << "\t.seh_savexmm " << Register << ", " << Offset;
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIPushFrame(bool Code, SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIPushFrame(Code, Loc);
|
|
|
|
OS << "\t.seh_pushframe";
|
|
if (Code)
|
|
OS << " @code";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitWinCFIEndProlog(SMLoc Loc) {
|
|
MCStreamer::EmitWinCFIEndProlog(Loc);
|
|
|
|
OS << "\t.seh_endprologue";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::emitCGProfileEntry(const MCSymbolRefExpr *From,
|
|
const MCSymbolRefExpr *To,
|
|
uint64_t Count) {
|
|
OS << "\t.cg_profile ";
|
|
From->getSymbol().print(OS, MAI);
|
|
OS << ", ";
|
|
To->getSymbol().print(OS, MAI);
|
|
OS << ", " << Count;
|
|
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);
|
|
|
|
// If we have no code emitter, don't emit code.
|
|
if (!getAssembler().getEmitterPtr())
|
|
return;
|
|
|
|
getAssembler().getEmitter().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 =
|
|
getAssembler().getBackend().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 =
|
|
getAssembler().getBackend().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(getCurrentSectionOnly() &&
|
|
"Cannot emit contents before setting section!");
|
|
|
|
// Show the encoding in a comment if we have a code 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);
|
|
|
|
StringRef Comments = CommentToEmit;
|
|
if (Comments.size() && Comments.back() != '\n')
|
|
GetCommentOS() << "\n";
|
|
|
|
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,
|
|
const MCSubtargetInfo &STI) {
|
|
OS << "\t.reloc ";
|
|
Offset.print(OS, MAI);
|
|
OS << ", " << Name;
|
|
if (Expr) {
|
|
OS << ", ";
|
|
Expr->print(OS, MAI);
|
|
}
|
|
EmitEOL();
|
|
return false;
|
|
}
|
|
|
|
void MCAsmStreamer::EmitAddrsig() {
|
|
OS << "\t.addrsig";
|
|
EmitEOL();
|
|
}
|
|
|
|
void MCAsmStreamer::EmitAddrsigSym(const MCSymbol *Sym) {
|
|
OS << "\t.addrsig_sym ";
|
|
Sym->print(OS, MAI);
|
|
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::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.
|
|
const 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,
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bool isVerboseAsm, bool useDwarfDirectory,
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MCInstPrinter *IP,
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std::unique_ptr<MCCodeEmitter> &&CE,
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std::unique_ptr<MCAsmBackend> &&MAB,
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bool ShowInst) {
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return new MCAsmStreamer(Context, std::move(OS), isVerboseAsm,
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useDwarfDirectory, IP, std::move(CE), std::move(MAB),
|
|
ShowInst);
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}
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