1 files changed, 170 insertions, 0 deletions
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
new file mode 100644
index 0000000000..f34fcd9a61
--- /dev/null
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -0,0 +1,170 @@
+//===- lib/MC/MCMachOStreamer.cpp - Mach-O Object Output ------------===//
+//
+//                     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/ADT/DenseMap.h"
+#include "llvm/MC/MCAssembler.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCValue.h"
+#include "llvm/Support/ErrorHandling.h"
+using namespace llvm;
+
+namespace {
+
+class MCMachOStreamer : public MCStreamer {
+  MCAssembler Assembler;
+
+  MCSectionData *CurSectionData;
+
+  DenseMap<const MCSection*, MCSectionData*> SectionMap;
+
+public:
+  MCMachOStreamer(MCContext &Context, raw_ostream &_OS)
+    : MCStreamer(Context), Assembler(_OS), CurSectionData(0) {}
+  ~MCMachOStreamer() {}
+
+  /// @name MCStreamer Interface
+  /// @{
+
+  virtual void SwitchSection(const MCSection *Section);
+
+  virtual void EmitLabel(MCSymbol *Symbol);
+
+  virtual void EmitAssemblerFlag(AssemblerFlag Flag);
+
+  virtual void EmitAssignment(MCSymbol *Symbol, const MCValue &Value,
+                              bool MakeAbsolute = false);
+
+  virtual void EmitSymbolAttribute(MCSymbol *Symbol, SymbolAttr Attribute);
+
+  virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
+
+  virtual void EmitLocalSymbol(MCSymbol *Symbol, const MCValue &Value);
+
+  virtual void EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+                                unsigned Pow2Alignment, bool IsLocal);
+
+  virtual void EmitZerofill(MCSection *Section, MCSymbol *Symbol = NULL,
+                            unsigned Size = 0, unsigned Pow2Alignment = 0);
+
+  virtual void EmitBytes(const StringRef &Data);
+
+  virtual void EmitValue(const MCValue &Value, unsigned Size);
+
+  virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
+                                    unsigned ValueSize = 1,
+                                    unsigned MaxBytesToEmit = 0);
+
+  virtual void EmitValueToOffset(const MCValue &Offset,
+                                 unsigned char Value = 0);
+
+  virtual void EmitInstruction(const MCInst &Inst);
+
+  virtual void Finish();
+
+  /// @}
+};
+
+} // end anonymous namespace.
+
+void MCMachOStreamer::SwitchSection(const MCSection *Section) {
+  assert(Section && "Cannot switch to a null section!");
+
+  if (Section != CurSection) {
+    CurSection = Section;
+    MCSectionData *&Entry = SectionMap[Section];
+
+    if (!Entry)
+      Entry = new MCSectionData(*Section, &Assembler);
+
+    CurSectionData = Entry;
+  }
+}
+
+void MCMachOStreamer::EmitLabel(MCSymbol *Symbol) {
+  assert(Symbol->getSection() == 0 && "Cannot emit a symbol twice!");
+  assert(CurSection && "Cannot emit before setting section!");
+  assert(!getContext().GetSymbolValue(Symbol) &&
+         "Cannot emit symbol which was directly assigned to!");
+
+  llvm_unreachable("FIXME: Not yet implemented!");
+
+  Symbol->setSection(CurSection);
+  Symbol->setExternal(false);
+}
+
+void MCMachOStreamer::EmitAssemblerFlag(AssemblerFlag Flag) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitAssignment(MCSymbol *Symbol,
+                                     const MCValue &Value,
+                                     bool MakeAbsolute) {
+  assert(!Symbol->getSection() && "Cannot assign to a label!");
+
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+                                          SymbolAttr Attribute) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitLocalSymbol(MCSymbol *Symbol, const MCValue &Value) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+                                       unsigned Pow2Alignment,
+                                       bool IsLocal) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
+                                   unsigned Size, unsigned Pow2Alignment) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitBytes(const StringRef &Data) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitValue(const MCValue &Value, unsigned Size) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitValueToAlignment(unsigned ByteAlignment,
+                                           int64_t Value, unsigned ValueSize,
+                                           unsigned MaxBytesToEmit) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitValueToOffset(const MCValue &Offset,
+                                        unsigned char Value) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::EmitInstruction(const MCInst &Inst) {
+  llvm_unreachable("FIXME: Not yet implemented!");
+}
+
+void MCMachOStreamer::Finish() {
+  Assembler.Finish();
+}
+
+MCStreamer *llvm::createMachOStreamer(MCContext &Context, raw_ostream &OS) {
+  return new MCMachOStreamer(Context, OS);
+}