Move ELFCodeEmiter stuff to new files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72785 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ELFCodeEmitter.h b/lib/CodeGen/ELFCodeEmitter.h
new file mode 100644
index 0000000..11ebcc8
--- /dev/null
+++ b/lib/CodeGen/ELFCodeEmitter.h
@@ -0,0 +1,87 @@
+//===-- lib/CodeGen/ELFCodeEmitter.h ----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ELFCODEEMITTER_H
+#define ELFCODEEMITTER_H
+
+#include "ELFWriter.h"
+#include "llvm/CodeGen/MachineCodeEmitter.h"
+#include <vector>
+
+namespace llvm {
+
+  /// ELFCodeEmitter - This class is used by the ELFWriter to 
+  /// emit the code for functions to the ELF file.
+  class ELFCodeEmitter : public MachineCodeEmitter {
+    ELFWriter &EW;
+    TargetMachine &TM;
+    ELFWriter::ELFSection *ES;  // Section to write to.
+    std::vector<unsigned char> *OutBuffer;
+    size_t FnStart;
+  public:
+    explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM), OutBuffer(0) {}
+
+    void startFunction(MachineFunction &F);
+    bool finishFunction(MachineFunction &F);
+
+    void addRelocation(const MachineRelocation &MR) {
+      assert(0 && "relo not handled yet!");
+    }
+
+    virtual void StartMachineBasicBlock(MachineBasicBlock *MBB) {
+    }
+
+    virtual uintptr_t getConstantPoolEntryAddress(unsigned Index) const {
+      assert(0 && "CP not implementated yet!");
+      return 0;
+    }
+    virtual uintptr_t getJumpTableEntryAddress(unsigned Index) const {
+      assert(0 && "JT not implementated yet!");
+      return 0;
+    }
+
+    virtual uintptr_t getMachineBasicBlockAddress(MachineBasicBlock *MBB) const {
+      assert(0 && "JT not implementated yet!");
+      return 0;
+    }
+
+    virtual uintptr_t getLabelAddress(uint64_t Label) const {
+      assert(0 && "Label address not implementated yet!");
+      abort();
+      return 0;
+    }
+
+    virtual void emitLabel(uint64_t LabelID) {
+      assert(0 && "emit Label not implementated yet!");
+      abort();
+    }
+
+    virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { }
+
+    /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
+    void startGVStub(const GlobalValue* F, unsigned StubSize,
+                     unsigned Alignment = 1) {
+      assert(0 && "JIT specific function called!");
+      abort();
+    }
+    void startGVStub(const GlobalValue* F,  void *Buffer, unsigned StubSize) {
+      assert(0 && "JIT specific function called!");
+      abort();
+    }
+    void *finishGVStub(const GlobalValue *F) {
+      assert(0 && "JIT specific function called!");
+      abort();
+      return 0;
+    }
+};  // end class ELFCodeEmitter
+
+} // end namespace llvm
+
+#endif
+