1 //===- lib/MC/MCNullStreamer.cpp - Dummy Streamer Implementation ----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
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 EmitSymbolAttribute(MCSymbol *Symbol,
26                              MCSymbolAttr Attribute) override {
27       return true;
28     }
29 
30     void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
31                           unsigned ByteAlignment) override {}
32     void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
33                       uint64_t Size = 0, unsigned ByteAlignment = 0) override {}
34     void EmitGPRel32Value(const MCExpr *Value) override {}
35     void BeginCOFFSymbolDef(const MCSymbol *Symbol) override {}
36     void EmitCOFFSymbolStorageClass(int StorageClass) override {}
37     void EmitCOFFSymbolType(int Type) override {}
38     void EndCOFFSymbolDef() override {}
39   };
40 
41 }
42 
43 MCStreamer *llvm::createNullStreamer(MCContext &Context) {
44   return new MCNullStreamer(Context);
45 }
46