lib/MC/MCNullStreamer.cpp

   1 //===- lib/MC/MCNullStreamer.cpp - Dummy Streamer Implementation ----------===//
   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 #include "llvm/ADT/StringRef.h"
  10 #include "llvm/MC/MCInst.h"
  11 #include "llvm/MC/MCStreamer.h"
  12 #include "llvm/MC/MCSymbol.h"
  13
  14 using namespace llvm;
  15
  16 namespace {
  17
  18   class MCNullStreamer : public MCStreamer {
  19   public:
  20     MCNullStreamer(MCContext &Context) : MCStreamer(Context) {}
  21
  22     /// @name MCStreamer Interface
  23     /// @{
  24
  25     bool hasRawTextSupport() const override { return true; }
  26     void EmitRawTextImpl(StringRef String) override {}
  27
  28     bool EmitSymbolAttribute(MCSymbol *Symbol,
  29                              MCSymbolAttr Attribute) override {
  30       return true;
  31     }
  32
  33     void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
  34                           unsigned ByteAlignment) override {}
  35     void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
  36                       uint64_t Size = 0, unsigned ByteAlignment = 0,
  37                       SMLoc Loc = SMLoc()) override {}
  38     void EmitGPRel32Value(const MCExpr *Value) override {}
  39     void BeginCOFFSymbolDef(const MCSymbol *Symbol) override {}
  40     void EmitCOFFSymbolStorageClass(int StorageClass) override {}
  41     void EmitCOFFSymbolType(int Type) override {}
  42     void EndCOFFSymbolDef() override {}
  43   };
  44
  45 }
  46
  47 MCStreamer *llvm::createNullStreamer(MCContext &Context) {
  48   return new MCNullStreamer(Context);
  49 }