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/MCDirectives.h"
11 #include "llvm/MC/MCStreamer.h"
12 #include "llvm/Support/SMLoc.h"
13 namespace llvm {
14 class MCContext;
15 class MCExpr;
16 class MCSection;
17 class MCSymbol;
18 } // namespace llvm
19
20 using namespace llvm;
21
22 namespace {
23
24 class MCNullStreamer : public MCStreamer {
25 public:
MCNullStreamer(MCContext & Context)26 MCNullStreamer(MCContext &Context) : MCStreamer(Context) {}
27
28 /// @name MCStreamer Interface
29 /// @{
30
hasRawTextSupport() const31 bool hasRawTextSupport() const override { return true; }
emitRawTextImpl(StringRef String)32 void emitRawTextImpl(StringRef String) override {}
33
emitSymbolAttribute(MCSymbol * Symbol,MCSymbolAttr Attribute)34 bool emitSymbolAttribute(MCSymbol *Symbol,
35 MCSymbolAttr Attribute) override {
36 return true;
37 }
38
emitCommonSymbol(MCSymbol * Symbol,uint64_t Size,Align ByteAlignment)39 void emitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
40 Align ByteAlignment) override {}
emitZerofill(MCSection * Section,MCSymbol * Symbol=nullptr,uint64_t Size=0,Align ByteAlignment=Align (1),SMLoc Loc=SMLoc ())41 void emitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
42 uint64_t Size = 0, Align ByteAlignment = Align(1),
43 SMLoc Loc = SMLoc()) override {}
emitGPRel32Value(const MCExpr * Value)44 void emitGPRel32Value(const MCExpr *Value) override {}
beginCOFFSymbolDef(const MCSymbol * Symbol)45 void beginCOFFSymbolDef(const MCSymbol *Symbol) override {}
emitCOFFSymbolStorageClass(int StorageClass)46 void emitCOFFSymbolStorageClass(int StorageClass) override {}
emitCOFFSymbolType(int Type)47 void emitCOFFSymbolType(int Type) override {}
endCOFFSymbolDef()48 void endCOFFSymbolDef() override {}
49 void
emitXCOFFSymbolLinkageWithVisibility(MCSymbol * Symbol,MCSymbolAttr Linkage,MCSymbolAttr Visibility)50 emitXCOFFSymbolLinkageWithVisibility(MCSymbol *Symbol, MCSymbolAttr Linkage,
51 MCSymbolAttr Visibility) override {}
52 };
53
54 }
55
createNullStreamer(MCContext & Context)56 MCStreamer *llvm::createNullStreamer(MCContext &Context) {
57 return new MCNullStreamer(Context);
58 }
59