1 files changed, 123 insertions, 0 deletions
diff --git a/contrib/llvm/lib/MC/MCNullStreamer.cpp b/contrib/llvm/lib/MC/MCNullStreamer.cpp
new file mode 100644
index 0000000..c872b22
--- /dev/null
+++ b/contrib/llvm/lib/MC/MCNullStreamer.cpp
@@ -0,0 +1,123 @@
+//===- 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(SK_NullStreamer, Context) {}
+
+    /// @name MCStreamer Interface
+    /// @{
+
+    virtual void InitToTextSection() {
+    }
+
+    virtual void InitSections() {
+    }
+
+    virtual void ChangeSection(const MCSection *Section) {
+    }
+
+    virtual void EmitLabel(MCSymbol *Symbol) {
+      assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
+      assert(getCurrentSection() && "Cannot emit before setting section!");
+      Symbol->setSection(*getCurrentSection());
+    }
+    virtual void EmitDebugLabel(MCSymbol *Symbol) {
+      EmitLabel(Symbol);
+    }
+    virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) {}
+    virtual void EmitThumbFunc(MCSymbol *Func) {}
+
+    virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
+    virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol){}
+    virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+                                          const MCSymbol *LastLabel,
+                                          const MCSymbol *Label,
+                                          unsigned PointerSize) {}
+
+    virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute){}
+
+    virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
+
+    virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) {}
+    virtual void EmitCOFFSymbolStorageClass(int StorageClass) {}
+    virtual void EmitCOFFSymbolType(int Type) {}
+    virtual void EndCOFFSymbolDef() {}
+    virtual void EmitCOFFSecRel32(MCSymbol const *Symbol) {}
+
+    virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
+    virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+                                  unsigned ByteAlignment) {}
+    virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+                                       unsigned ByteAlignment) {}
+    virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
+                              uint64_t Size = 0, unsigned ByteAlignment = 0) {}
+    virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
+                                uint64_t Size, unsigned ByteAlignment) {}
+    virtual void EmitBytes(StringRef Data, unsigned AddrSpace) {}
+
+    virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
+                               unsigned AddrSpace) {}
+    virtual void EmitULEB128Value(const MCExpr *Value) {}
+    virtual void EmitSLEB128Value(const MCExpr *Value) {}
+    virtual void EmitGPRel32Value(const MCExpr *Value) {}
+    virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
+                                      unsigned ValueSize = 1,
+                                      unsigned MaxBytesToEmit = 0) {}
+
+    virtual void EmitCodeAlignment(unsigned ByteAlignment,
+                                   unsigned MaxBytesToEmit = 0) {}
+
+    virtual bool EmitValueToOffset(const MCExpr *Offset,
+                                   unsigned char Value = 0) { return false; }
+
+    virtual void EmitFileDirective(StringRef Filename) {}
+    virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+                                        StringRef Filename, unsigned CUID = 0) {
+      return false;
+    }
+    virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
+                                       unsigned Column, unsigned Flags,
+                                       unsigned Isa, unsigned Discriminator,
+                                       StringRef FileName) {}
+    virtual void EmitInstruction(const MCInst &Inst) {}
+
+    virtual void EmitBundleAlignMode(unsigned AlignPow2) {}
+    virtual void EmitBundleLock(bool AlignToEnd) {}
+    virtual void EmitBundleUnlock() {}
+
+    virtual void FinishImpl() {}
+
+    virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
+      RecordProcEnd(Frame);
+    }
+
+    /// @}
+
+    static bool classof(const MCStreamer *S) {
+      return S->getKind() == SK_NullStreamer;
+    }
+
+  };
+
+}
+
+MCStreamer *llvm::createNullStreamer(MCContext &Context) {
+  return new MCNullStreamer(Context);
+}