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
reset()34   void reset() override {
35     CurSymbol = nullptr;
36     MCObjectStreamer::reset();
37   }
38 
39   /// \name MCStreamer interface
40   /// \{
41 
42   void InitSections(bool NoExecStack) 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                         unsigned ByteAlignment) override;
59   void emitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
60                              unsigned ByteAlignment) override;
61   void emitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
62   void emitZerofill(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
63                     unsigned ByteAlignment, SMLoc Loc = SMLoc()) override;
64   void emitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
65                       unsigned 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