1 //===- MCWasmStreamer.h - MCStreamer Wasm Object File Interface -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_MC_MCWASMSTREAMER_H
11 #define LLVM_MC_MCWASMSTREAMER_H
13 #include "llvm/ADT/SmallPtrSet.h"
14 #include "llvm/MC/MCDirectives.h"
15 #include "llvm/MC/MCObjectStreamer.h"
16 #include "llvm/MC/SectionKind.h"
17 #include "llvm/Support/DataTypes.h"
27 class MCWasmStreamer : public MCObjectStreamer {
29 MCWasmStreamer(MCContext &Context, MCAsmBackend &TAB, raw_pwrite_stream &OS,
30 MCCodeEmitter *Emitter)
31 : MCObjectStreamer(Context, TAB, OS, Emitter), SeenIdent(false) {}
33 ~MCWasmStreamer() override;
36 void reset() override {
38 MCObjectStreamer::reset();
41 /// \name MCStreamer Interface
44 void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
45 void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
46 void EmitThumbFunc(MCSymbol *Func) override;
47 void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
48 bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
49 void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
50 void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
51 unsigned ByteAlignment) override;
53 void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
55 void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
56 unsigned ByteAlignment) override;
58 void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
59 uint64_t Size = 0, unsigned ByteAlignment = 0) override;
60 void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
61 unsigned ByteAlignment = 0) override;
62 void EmitValueImpl(const MCExpr *Value, unsigned Size,
63 SMLoc Loc = SMLoc()) override;
65 void EmitIdent(StringRef IdentString) override;
67 void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
69 void FinishImpl() override;
72 void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
73 void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
75 /// \brief Merge the content of the fragment \p EF into the fragment \p DF.
76 void mergeFragment(MCDataFragment *, MCDataFragment *);
81 } // end namespace llvm