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  1. //===- MCWinCOFFStreamer.h - COFF Object File Interface ---------*- C++ -*-===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8.  
  9. #ifndef LLVM_MC_MCWINCOFFSTREAMER_H
  10. #define LLVM_MC_MCWINCOFFSTREAMER_H
  11.  
  12. #include "llvm/MC/MCDirectives.h"
  13. #include "llvm/MC/MCObjectStreamer.h"
  14.  
  15. namespace llvm {
  16.  
  17. class MCAsmBackend;
  18. class MCContext;
  19. class MCCodeEmitter;
  20. class MCInst;
  21. class MCSection;
  22. class MCSubtargetInfo;
  23. class MCSymbol;
  24. class StringRef;
  25. class raw_pwrite_stream;
  26.  
  27. class MCWinCOFFStreamer : public MCObjectStreamer {
  28. public:
  29.   MCWinCOFFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> MAB,
  30.                     std::unique_ptr<MCCodeEmitter> CE,
  31.                     std::unique_ptr<MCObjectWriter> OW);
  32.  
  33.   /// state management
  34.   void reset() override {
  35.     CurSymbol = nullptr;
  36.     MCObjectStreamer::reset();
  37.   }
  38.  
  39.   /// \name MCStreamer interface
  40.   /// \{
  41.  
  42.   void initSections(bool NoExecStack, const MCSubtargetInfo &STI) override;
  43.   void emitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
  44.   void emitAssemblerFlag(MCAssemblerFlag Flag) override;
  45.   void emitThumbFunc(MCSymbol *Func) override;
  46.   bool emitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
  47.   void emitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
  48.   void beginCOFFSymbolDef(MCSymbol const *Symbol) override;
  49.   void emitCOFFSymbolStorageClass(int StorageClass) override;
  50.   void emitCOFFSymbolType(int Type) override;
  51.   void endCOFFSymbolDef() override;
  52.   void emitCOFFSafeSEH(MCSymbol const *Symbol) override;
  53.   void emitCOFFSymbolIndex(MCSymbol const *Symbol) override;
  54.   void emitCOFFSectionIndex(MCSymbol const *Symbol) override;
  55.   void emitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) override;
  56.   void emitCOFFImgRel32(MCSymbol const *Symbol, int64_t Offset) override;
  57.   void emitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
  58.                         Align ByteAlignment) override;
  59.   void emitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
  60.                              Align ByteAlignment) override;
  61.   void emitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
  62.   void emitZerofill(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
  63.                     Align ByteAlignment, SMLoc Loc = SMLoc()) override;
  64.   void emitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
  65.                       Align ByteAlignment) override;
  66.   void emitIdent(StringRef IdentString) override;
  67.   void emitWinEHHandlerData(SMLoc Loc) override;
  68.   void emitCGProfileEntry(const MCSymbolRefExpr *From,
  69.                           const MCSymbolRefExpr *To, uint64_t Count) override;
  70.   void finishImpl() override;
  71.  
  72.   /// \}
  73.  
  74. protected:
  75.   const MCSymbol *CurSymbol;
  76.  
  77.   void emitInstToData(const MCInst &Inst, const MCSubtargetInfo &STI) override;
  78.  
  79.   void finalizeCGProfileEntry(const MCSymbolRefExpr *&S);
  80.   void finalizeCGProfile();
  81.  
  82. private:
  83.   void Error(const Twine &Msg) const;
  84. };
  85.  
  86. } // end namespace llvm
  87.  
  88. #endif // LLVM_MC_MCWINCOFFSTREAMER_H
  89.