diff options
Diffstat (limited to 'include/llvm/MC/MCStreamer.h')
| -rw-r--r-- | include/llvm/MC/MCStreamer.h | 114 |
1 files changed, 69 insertions, 45 deletions
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h index 2a8367a..216de75 100644 --- a/include/llvm/MC/MCStreamer.h +++ b/include/llvm/MC/MCStreamer.h @@ -86,6 +86,27 @@ public: virtual void finish(); }; +class AArch64TargetStreamer : public MCTargetStreamer { +public: + AArch64TargetStreamer(MCStreamer &S); + ~AArch64TargetStreamer(); + + + 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; +}; + // FIXME: declared here because it is used from // lib/CodeGen/AsmPrinter/ARMException.cpp. class ARMTargetStreamer : public MCTargetStreamer { @@ -164,8 +185,6 @@ class MCStreamer { void setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame); void EnsureValidW64UnwindInfo(); - MCSymbol *LastSymbol; - // SymbolOrdering - Tracks an index to represent the order // a symbol was emitted in. Zero means we did not emit that symbol. DenseMap<const MCSymbol *, unsigned> SymbolOrdering; @@ -182,9 +201,7 @@ protected: const MCExpr *ForceExpAbs(const MCExpr *Expr); - void RecordProcStart(MCDwarfFrameInfo &Frame); virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame); - void RecordProcEnd(MCDwarfFrameInfo &Frame); virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &CurFrame); MCWin64EHUnwindInfo *getCurrentW64UnwindInfo() { @@ -197,6 +214,9 @@ protected: public: virtual ~MCStreamer(); + void visitUsedExpr(const MCExpr &Expr); + virtual void visitUsedSymbol(const MCSymbol &Sym); + void setTargetStreamer(MCTargetStreamer *TS) { TargetStreamer.reset(TS); } @@ -223,6 +243,10 @@ public: return *W64UnwindInfos[i]; } + ArrayRef<MCWin64EHUnwindInfo *> getW64UnwindInfos() const { + return W64UnwindInfos; + } + void generateCompactUnwindEncodings(MCAsmBackend *MAB); /// @name Assembly File Formatting. @@ -294,7 +318,7 @@ public: /// /// This is called by PopSection and SwitchSection, if the current /// section changes. - virtual void ChangeSection(const MCSection *, const MCExpr *) = 0; + virtual void ChangeSection(const MCSection *, const MCExpr *); /// pushSection - Save the current and previous section on the /// section stack. @@ -374,12 +398,10 @@ public: // add the section we're emitting it to later. virtual void EmitLabel(MCSymbol *Symbol); - virtual void EmitDebugLabel(MCSymbol *Symbol); - virtual void EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol); /// EmitAssemblerFlag - Note in the output the specified @p Flag. - virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) = 0; + virtual void EmitAssemblerFlag(MCAssemblerFlag Flag); /// EmitLinkerOptions - Emit the given list @p Options of strings as linker /// options into the output. @@ -394,7 +416,7 @@ public: /// EmitThumbFunc - Note in the output that the specified @p Func is /// a Thumb mode function (ARM target only). - virtual void EmitThumbFunc(MCSymbol *Func) = 0; + virtual void EmitThumbFunc(MCSymbol *Func); /// EmitAssignment - Emit an assignment of @p Value to @p Symbol. /// @@ -416,7 +438,7 @@ public: /// /// @param Alias - The alias that is being created. /// @param Symbol - The symbol being aliased. - virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) = 0; + virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol); /// EmitSymbolAttribute - Add the given @p Attribute to @p Symbol. virtual bool EmitSymbolAttribute(MCSymbol *Symbol, @@ -426,25 +448,25 @@ public: /// /// @param Symbol - The symbol to have its n_desc field set. /// @param DescValue - The value to set into the n_desc field. - virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) = 0; + virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue); /// BeginCOFFSymbolDef - Start emitting COFF symbol definition /// /// @param Symbol - The symbol to have its External & Type fields set. - virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) = 0; + virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol); /// EmitCOFFSymbolStorageClass - Emit the storage class of the symbol. /// /// @param StorageClass - The storage class the symbol should have. - virtual void EmitCOFFSymbolStorageClass(int StorageClass) = 0; + virtual void EmitCOFFSymbolStorageClass(int StorageClass); /// EmitCOFFSymbolType - Emit the type of the symbol. /// /// @param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h) - virtual void EmitCOFFSymbolType(int Type) = 0; + virtual void EmitCOFFSymbolType(int Type); /// EndCOFFSymbolDef - Marks the end of the symbol definition. - virtual void EndCOFFSymbolDef() = 0; + virtual void EndCOFFSymbolDef(); /// EmitCOFFSectionIndex - Emits a COFF section index. /// @@ -461,7 +483,7 @@ public: /// This corresponds to an assembler statement such as: /// .size symbol, expression /// - virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0; + virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value); /// \brief Emit a Linker Optimization Hint (LOH) directive. /// \param Args - Arguments of the LOH. @@ -482,7 +504,7 @@ public: /// @param Size - The size of the common symbol. /// @param ByteAlignment - The alignment of the common symbol in bytes. virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, - unsigned ByteAlignment) = 0; + unsigned ByteAlignment); /// EmitZerofill - Emit the zerofill section and an optional symbol. /// @@ -503,7 +525,7 @@ public: /// @param ByteAlignment - The alignment of the thread local common symbol /// if non-zero. This must be a power of 2 on some targets. virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol, - uint64_t Size, unsigned ByteAlignment = 0) = 0; + uint64_t Size, unsigned ByteAlignment = 0); /// @} /// @name Generating Data @@ -513,7 +535,7 @@ public: /// /// This is used to implement assembler directives such as .byte, .ascii, /// etc. - virtual void EmitBytes(StringRef Data) = 0; + virtual void EmitBytes(StringRef Data); /// EmitValue - Emit the expression @p Value into the output as a native /// integer of the given @p Size bytes. @@ -526,7 +548,7 @@ public: /// match a native machine width. /// @param Loc - The location of the expression for error reporting. virtual void EmitValueImpl(const MCExpr *Value, unsigned Size, - const SMLoc &Loc = SMLoc()) = 0; + const SMLoc &Loc = SMLoc()); void EmitValue(const MCExpr *Value, unsigned Size, const SMLoc &Loc = SMLoc()); @@ -541,9 +563,9 @@ public: /// .long foo void EmitAbsValue(const MCExpr *Value, unsigned Size); - virtual void EmitULEB128Value(const MCExpr *Value) = 0; + virtual void EmitULEB128Value(const MCExpr *Value); - virtual void EmitSLEB128Value(const MCExpr *Value) = 0; + virtual void EmitSLEB128Value(const MCExpr *Value); /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the /// client having to pass in a MCExpr for constant integers. @@ -598,7 +620,7 @@ public: /// emitted. virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0, unsigned ValueSize = 1, - unsigned MaxBytesToEmit = 0) = 0; + unsigned MaxBytesToEmit = 0); /// EmitCodeAlignment - Emit nops until the byte alignment @p ByteAlignment /// is reached. @@ -612,7 +634,7 @@ public: /// the alignment cannot be reached in this many bytes, no bytes are /// emitted. virtual void EmitCodeAlignment(unsigned ByteAlignment, - unsigned MaxBytesToEmit = 0) = 0; + unsigned MaxBytesToEmit = 0); /// EmitValueToOffset - Emit some number of copies of @p Value until the /// byte offset @p Offset is reached. @@ -624,13 +646,13 @@ public: /// @param Value - The value to use when filling bytes. /// @return false on success, true if the offset was invalid. virtual bool EmitValueToOffset(const MCExpr *Offset, - unsigned char Value = 0) = 0; + unsigned char Value = 0); /// @} /// EmitFileDirective - Switch to a new logical file. This is used to /// implement the '.file "foo.c"' assembler directive. - virtual void EmitFileDirective(StringRef Filename) = 0; + virtual void EmitFileDirective(StringRef Filename); /// Emit the "identifiers" directive. This implements the /// '.ident "version foo"' assembler directive. @@ -677,38 +699,38 @@ public: virtual void EmitCFIRegister(int64_t Register1, int64_t Register2); virtual void EmitCFIWindowSave(); - virtual void EmitWin64EHStartProc(const MCSymbol *Symbol); - virtual void EmitWin64EHEndProc(); - virtual void EmitWin64EHStartChained(); - virtual void EmitWin64EHEndChained(); - virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind, - bool Except); - virtual void EmitWin64EHHandlerData(); - virtual void EmitWin64EHPushReg(unsigned Register); - virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset); - virtual void EmitWin64EHAllocStack(unsigned Size); - virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset); - virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset); - virtual void EmitWin64EHPushFrame(bool Code); - virtual void EmitWin64EHEndProlog(); + virtual void EmitWinCFIStartProc(const MCSymbol *Symbol); + virtual void EmitWinCFIEndProc(); + virtual void EmitWinCFIStartChained(); + virtual void EmitWinCFIEndChained(); + virtual void EmitWinCFIPushReg(unsigned Register); + virtual void EmitWinCFISetFrame(unsigned Register, unsigned Offset); + virtual void EmitWinCFIAllocStack(unsigned Size); + virtual void EmitWinCFISaveReg(unsigned Register, unsigned Offset); + virtual void EmitWinCFISaveXMM(unsigned Register, unsigned Offset); + virtual void EmitWinCFIPushFrame(bool Code); + virtual void EmitWinCFIEndProlog(); + + virtual void EmitWinEHHandler(const MCSymbol *Sym, bool Unwind, bool Except); + virtual void EmitWinEHHandlerData(); /// EmitInstruction - Emit the given @p Instruction into the current /// section. - virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) = 0; + virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI); /// \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 /// value 0 means turn the bundle alignment off. - virtual void EmitBundleAlignMode(unsigned AlignPow2) = 0; + virtual void EmitBundleAlignMode(unsigned AlignPow2); /// \brief The following instructions are a bundle-locked group. /// /// \param AlignToEnd - If true, the bundle-locked group will be aligned to /// the end of a bundle. - virtual void EmitBundleLock(bool AlignToEnd) = 0; + virtual void EmitBundleLock(bool AlignToEnd); /// \brief Ends a bundle-locked group. - virtual void EmitBundleUnlock() = 0; + virtual void EmitBundleUnlock(); /// EmitRawText - If this file is backed by a assembly streamer, this dumps /// the specified string in the output .s file. This capability is @@ -719,9 +741,11 @@ public: virtual void Flush() {} /// FinishImpl - Streamer specific finalization. - virtual void FinishImpl() = 0; + virtual void FinishImpl(); /// Finish - Finish emission of machine code. void Finish(); + + virtual bool mayHaveInstructions() const { return true; } }; /// createNullStreamer - Create a dummy machine code streamer, which does |