Add file left out of last commit.

src/ia32/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 955 matching lines @@
   // an instruction or relocation information.
   inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; }
 
   // Get the number of bytes available in the buffer.
   inline int available_space() const { return reloc_info_writer.pos() - pc_; }
 
   static bool IsNop(Address addr) { return *addr == 0x90; }
 
   PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
+  int relocation_writer_size() {
+    return (buffer_ + buffer_size_) - reloc_info_writer.pos();
+  }
+
   // Avoid overflows for displacements etc.
   static const int kMaximalBufferSize = 512*MB;
   static const int kMinimalBufferSize = 4*KB;
 
  protected:
   void movsd(XMMRegister dst, const Operand& src);
   void movsd(const Operand& dst, XMMRegister src);
 
   void emit_sse_operand(XMMRegister reg, const Operand& adr);
   void emit_sse_operand(XMMRegister dst, XMMRegister src);
@@ skipping 94 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_