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//===- lib/MC/MCNullStreamer.cpp - Dummy Streamer Implementation ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbol.h"
using namespace llvm;
namespace {
class MCNullStreamer : public MCStreamer {
public:
MCNullStreamer(MCContext &Context) : MCStreamer(Context) {}
/// @name MCStreamer Interface
/// @{
void ChangeSection(const MCSection *Section,
const MCExpr *Subsection) override {
}
void EmitLabel(MCSymbol *Symbol) override {
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
assert(getCurrentSection().first &&"Cannot emit before setting section!");
AssignSection(Symbol, getCurrentSection().first);
}
void EmitDebugLabel(MCSymbol *Symbol) override {
EmitLabel(Symbol);
}
void EmitAssemblerFlag(MCAssemblerFlag Flag) override {}
void EmitThumbFunc(MCSymbol *Func) override {}
void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override {}
void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override {}
void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
const MCSymbol *LastLabel,
const MCSymbol *Label,
unsigned PointerSize) override {}
bool EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) override {
return true;
}
void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override {}
void BeginCOFFSymbolDef(const MCSymbol *Symbol) override {}
void EmitCOFFSymbolStorageClass(int StorageClass) override {}
void EmitCOFFSymbolType(int Type) override {}
void EndCOFFSymbolDef() override {}
void EmitCOFFSecRel32(MCSymbol const *Symbol) override {}
void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) override {}
void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) override {}
void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) override {}
void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
uint64_t Size = 0, unsigned ByteAlignment = 0) override {}
void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) override {}
void EmitBytes(StringRef Data) override {}
void EmitValueImpl(const MCExpr *Value, unsigned Size) override {}
void EmitULEB128Value(const MCExpr *Value) override {}
void EmitSLEB128Value(const MCExpr *Value) override {}
void EmitGPRel32Value(const MCExpr *Value) override {}
void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
unsigned ValueSize = 1,
unsigned MaxBytesToEmit = 0) override {}
void EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit = 0) override {}
bool EmitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0) override { return false; }
void EmitFileDirective(StringRef Filename) override {}
unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
StringRef Filename,
unsigned CUID = 0) override {
return 0;
}
void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa, unsigned Discriminator,
StringRef FileName) override {}
void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo&) override {}
void EmitBundleAlignMode(unsigned AlignPow2) override {}
void EmitBundleLock(bool AlignToEnd) override {}
void EmitBundleUnlock() override {}
void FinishImpl() override {}
void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override {
RecordProcEnd(Frame);
}
};
}
MCStreamer *llvm::createNullStreamer(MCContext &Context) {
return new MCNullStreamer(Context);
}
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