diff options
Diffstat (limited to 'include/llvm/MC/MCStreamer.h')
| -rw-r--r-- | include/llvm/MC/MCStreamer.h | 175 |
1 files changed, 111 insertions, 64 deletions
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h index 0b1fe6e..8ee60c1 100644 --- a/include/llvm/MC/MCStreamer.h +++ b/include/llvm/MC/MCStreamer.h @@ -19,6 +19,7 @@ #include "llvm/MC/MCAssembler.h" #include "llvm/MC/MCDirectives.h" #include "llvm/MC/MCDwarf.h" +#include "llvm/MC/MCLinkerOptimizationHint.h" #include "llvm/MC/MCWin64EH.h" #include "llvm/Support/DataTypes.h" #include <string> @@ -33,10 +34,13 @@ class MCInstPrinter; class MCSection; class MCStreamer; class MCSymbol; +class MCSymbolRefExpr; +class MCSubtargetInfo; class StringRef; class Twine; class raw_ostream; class formatted_raw_ostream; +class AssemblerConstantPools; typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair; @@ -66,34 +70,70 @@ typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair; /// be treated differently. Callers should always talk to a FooTargetStreamer. class MCTargetStreamer { protected: - MCStreamer *Streamer; + MCStreamer &Streamer; public: + MCTargetStreamer(MCStreamer &S); virtual ~MCTargetStreamer(); - void setStreamer(MCStreamer *S) { Streamer = S; } + + const MCStreamer &getStreamer() { return Streamer; } + + // Allow a target to add behavior to the EmitLabel of MCStreamer. + virtual void emitLabel(MCSymbol *Symbol); + // Allow a target to add behavior to the emitAssignment of MCStreamer. + virtual void emitAssignment(MCSymbol *Symbol, const MCExpr *Value); + + virtual void finish(); }; // FIXME: declared here because it is used from // lib/CodeGen/AsmPrinter/ARMException.cpp. class ARMTargetStreamer : public MCTargetStreamer { - virtual void anchor(); public: - virtual void emitFnStart() = 0; - virtual void emitFnEnd() = 0; - virtual void emitCantUnwind() = 0; - virtual void emitPersonality(const MCSymbol *Personality) = 0; - virtual void emitHandlerData() = 0; + ARMTargetStreamer(MCStreamer &S); + ~ARMTargetStreamer(); + + virtual void emitFnStart(); + virtual void emitFnEnd(); + virtual void emitCantUnwind(); + virtual void emitPersonality(const MCSymbol *Personality); + virtual void emitPersonalityIndex(unsigned Index); + virtual void emitHandlerData(); virtual void emitSetFP(unsigned FpReg, unsigned SpReg, - int64_t Offset = 0) = 0; - virtual void emitPad(int64_t Offset) = 0; + int64_t Offset = 0); + virtual void emitMovSP(unsigned Reg, int64_t Offset = 0); + virtual void emitPad(int64_t Offset); virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList, - bool isVector) = 0; - - virtual void switchVendor(StringRef Vendor) = 0; - virtual void emitAttribute(unsigned Attribute, unsigned Value) = 0; - virtual void emitTextAttribute(unsigned Attribute, StringRef String) = 0; - virtual void emitFPU(unsigned FPU) = 0; - virtual void finishAttributeSection() = 0; + bool isVector); + virtual void emitUnwindRaw(int64_t StackOffset, + const SmallVectorImpl<uint8_t> &Opcodes); + + virtual void switchVendor(StringRef Vendor); + virtual void emitAttribute(unsigned Attribute, unsigned Value); + virtual void emitTextAttribute(unsigned Attribute, StringRef String); + virtual void emitIntTextAttribute(unsigned Attribute, unsigned IntValue, + StringRef StringValue = ""); + virtual void emitFPU(unsigned FPU); + virtual void emitArch(unsigned Arch); + virtual void emitObjectArch(unsigned Arch); + virtual void finishAttributeSection(); + virtual void emitInst(uint32_t Inst, char Suffix = '\0'); + + virtual void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE); + + void finish() override; + + /// Callback used to implement the ldr= pseudo. + /// Add a new entry to the constant pool for the current section and return an + /// MCExpr that can be used to refer to the constant pool location. + const MCExpr *addConstantPoolEntry(const MCExpr *); + + /// Callback used to implemnt the .ltorg directive. + /// Emit contents of constant pool for the current section. + void emitCurrentConstantPool(); + +private: + std::unique_ptr<AssemblerConstantPools> ConstantPools; }; /// MCStreamer - Streaming machine code generation interface. This interface @@ -107,7 +147,7 @@ public: /// class MCStreamer { MCContext &Context; - OwningPtr<MCTargetStreamer> TargetStreamer; + std::unique_ptr<MCTargetStreamer> TargetStreamer; MCStreamer(const MCStreamer &) LLVM_DELETED_FUNCTION; MCStreamer &operator=(const MCStreamer &) LLVM_DELETED_FUNCTION; @@ -135,10 +175,8 @@ class MCStreamer { /// values saved by PushSection. SmallVector<std::pair<MCSectionSubPair, MCSectionSubPair>, 4> SectionStack; - bool AutoInitSections; - protected: - MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer); + MCStreamer(MCContext &Ctx); const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A, const MCSymbol *B); @@ -161,15 +199,18 @@ protected: public: virtual ~MCStreamer(); + void setTargetStreamer(MCTargetStreamer *TS) { + TargetStreamer.reset(TS); + } + /// State management /// virtual void reset(); MCContext &getContext() const { return Context; } - MCTargetStreamer &getTargetStreamer() { - assert(TargetStreamer); - return *TargetStreamer; + MCTargetStreamer *getTargetStreamer() { + return TargetStreamer.get(); } unsigned getNumFrameInfos() { return FrameInfos.size(); } @@ -197,6 +238,10 @@ public: /// unformatted text to the .s file with EmitRawText. virtual bool hasRawTextSupport() const { return false; } + /// Is the integrated assembler required for this streamer to function + /// correctly? + virtual bool isIntegratedAssemblerRequired() const { return false; } + /// 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 @@ -211,6 +256,12 @@ public: /// use this method. virtual raw_ostream &GetCommentOS(); + /// Print T and prefix it with the comment string (normally #) and optionally + /// a tab. This prints the comment immediately, not at the end of the + /// current line. It is basically a safe version of EmitRawText: since it + /// only prints comments, the object streamer ignores it instead of asserting. + virtual void emitRawComment(const Twine &T, bool TabPrefix = true); + /// AddBlankLine - Emit a blank line to a .s file to pretty it up. virtual void AddBlankLine() {} @@ -303,22 +354,8 @@ public: SectionStack.back().first = MCSectionSubPair(Section, Subsection); } - /// Initialize the streamer. - void InitStreamer() { - if (AutoInitSections) - InitSections(); - } - - /// Tell this MCStreamer to call InitSections upon initialization. - void setAutoInitSections(bool AutoInitSections) { - this->AutoInitSections = AutoInitSections; - } - - /// InitSections - Create the default sections and set the initial one. - virtual void InitSections() = 0; - - /// InitToTextSection - Create a text section and switch the streamer to it. - virtual void InitToTextSection() = 0; + /// Create the default sections and set the initial one. + virtual void InitSections(); /// AssignSection - Sets the symbol's section. /// @@ -334,6 +371,8 @@ public: /// @param Symbol - The symbol to emit. A given symbol should only be /// emitted as a label once, and symbols emitted as a label should never be /// used in an assignment. + // FIXME: These emission are non-const because we mutate the symbol to + // add the section we're emitting it to later. virtual void EmitLabel(MCSymbol *Symbol); virtual void EmitDebugLabel(MCSymbol *Symbol); @@ -350,12 +389,16 @@ public: /// EmitDataRegion - Note in the output the specified region @p Kind. virtual void EmitDataRegion(MCDataRegionType Kind) {} + /// EmitVersionMin - Specify the MachO minimum deployment target version. + virtual void EmitVersionMin(MCVersionMinType, unsigned Major, unsigned Minor, + unsigned Update) {} + /// EmitThumbFunc - Note in the output that the specified @p Func is /// a Thumb mode function (ARM target only). virtual void EmitThumbFunc(MCSymbol *Func) = 0; /// getOrCreateSymbolData - Get symbol data for given symbol. - virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol); + virtual MCSymbolData &getOrCreateSymbolData(const MCSymbol *Symbol); /// EmitAssignment - Emit an assignment of @p Value to @p Symbol. /// @@ -368,7 +411,7 @@ public: /// /// @param Symbol - The symbol being assigned to. /// @param Value - The value for the symbol. - virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) = 0; + virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value); /// EmitWeakReference - Emit an weak reference from @p Alias to @p Symbol. /// @@ -407,9 +450,14 @@ public: /// EndCOFFSymbolDef - Marks the end of the symbol definition. virtual void EndCOFFSymbolDef() = 0; + /// EmitCOFFSectionIndex - Emits a COFF section index. + /// + /// @param Symbol - Symbol the section number relocation should point to. + virtual void EmitCOFFSectionIndex(MCSymbol const *Symbol); + /// EmitCOFFSecRel32 - Emits a COFF section relative relocation. /// - /// @param Symbol - Symbol the section relative realocation should point to. + /// @param Symbol - Symbol the section relative relocation should point to. virtual void EmitCOFFSecRel32(MCSymbol const *Symbol); /// EmitELFSize - Emit an ELF .size directive. @@ -419,6 +467,10 @@ public: /// virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0; + /// \brief Emit a Linker Optimization Hint (LOH) directive. + /// \param Args - Arguments of the LOH. + virtual void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) {} + /// EmitCommonSymbol - Emit a common symbol. /// /// @param Symbol - The common symbol to emit. @@ -587,8 +639,9 @@ public: /// EmitDwarfFileDirective - Associate a filename with a specified logical /// file number. This implements the DWARF2 '.file 4 "foo.c"' assembler /// directive. - virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory, - StringRef Filename, unsigned CUID = 0); + virtual unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory, + StringRef Filename, + unsigned CUID = 0); /// EmitDwarfLocDirective - This implements the DWARF2 // '.loc fileno lineno ...' assembler directive. @@ -605,12 +658,14 @@ public: virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel, const MCSymbol *Label) {} + virtual MCSymbol *getDwarfLineTableSymbol(unsigned CUID); + void EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label, int PointerSize); virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding); virtual void EmitCFISections(bool EH, bool Debug); - void EmitCFIStartProc(); + void EmitCFIStartProc(bool IsSimple); void EmitCFIEndProc(); virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset); virtual void EmitCFIDefCfaOffset(int64_t Offset); @@ -647,7 +702,7 @@ public: /// EmitInstruction - Emit the given @p Instruction into the current /// section. - virtual void EmitInstruction(const MCInst &Inst) = 0; + virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) = 0; /// \brief Set the bundle alignment mode from now on in the section. /// The argument is the power of 2 to which the alignment is set. The @@ -698,12 +753,11 @@ MCStreamer *createNullStreamer(MCContext &Ctx); /// /// \param ShowInst - Whether to show the MCInst representation inline with /// the assembly. -MCStreamer *createAsmStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer, - formatted_raw_ostream &OS, bool isVerboseAsm, - bool useLoc, bool useCFI, bool useDwarfDirectory, - MCInstPrinter *InstPrint = 0, - MCCodeEmitter *CE = 0, MCAsmBackend *TAB = 0, - bool ShowInst = false); +MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS, + bool isVerboseAsm, bool useCFI, + bool useDwarfDirectory, MCInstPrinter *InstPrint, + MCCodeEmitter *CE, MCAsmBackend *TAB, + bool ShowInst); /// createMachOStreamer - Create a machine code streamer which will generate /// Mach-O format object files. @@ -711,7 +765,8 @@ MCStreamer *createAsmStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer, /// Takes ownership of \p TAB and \p CE. MCStreamer *createMachOStreamer(MCContext &Ctx, MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter *CE, - bool RelaxAll = false); + bool RelaxAll = false, + bool LabelSections = false); /// createWinCOFFStreamer - Create a machine code streamer which will /// generate Microsoft COFF format object files. @@ -723,18 +778,10 @@ MCStreamer *createWinCOFFStreamer(MCContext &Ctx, MCAsmBackend &TAB, /// createELFStreamer - Create a machine code streamer which will generate /// ELF format object files. -MCStreamer *createELFStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer, - MCAsmBackend &TAB, raw_ostream &OS, - MCCodeEmitter *CE, bool RelaxAll, +MCStreamer *createELFStreamer(MCContext &Ctx, MCAsmBackend &TAB, + raw_ostream &OS, MCCodeEmitter *CE, bool RelaxAll, bool NoExecStack); -/// createPureStreamer - Create a machine code streamer which will generate -/// "pure" MC object files, for use with MC-JIT and testing tools. -/// -/// Takes ownership of \p TAB and \p CE. -MCStreamer *createPureStreamer(MCContext &Ctx, MCAsmBackend &TAB, - raw_ostream &OS, MCCodeEmitter *CE); - } // end namespace llvm #endif |