codeBuffer.hpp

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/* Copyright 1994 - 1996, LongView Technologies L.L.C. $Revision: 1.1 $ */
/* Copyright (c) 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.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
          disclaimer in the documentation and/or other materials provided with the distribution.
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          from this software without specific prior written permission.

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#ifdef DELTA_COMPILER

class  MacroAssembler;
extern MacroAssembler* theMacroAssm;


class CodeBuffer: public PrintableResourceObj {
 private:
  char*         instsStart;
  char*         instsEnd;
  char*         instsOverflow;
  
  relocInfo*    locsStart;
  relocInfo*    locsEnd;
  relocInfo*    locsOverflow;
  int           last_reloc_offset;

  char*         _decode_begin;

  char*         decode_begin();

 public:
  CodeBuffer(char* code_start, int code_size);
  CodeBuffer(int instsSize, int locsSize);
  
  char* code_begin() const              { return instsStart; };
  char* code_end()   const              { return instsEnd; }
  char* code_limit() const              { return instsOverflow; };

  int   code_size()  const              { return instsEnd - instsStart; }
  int   reloc_size() const              { return (locsEnd - locsStart) * sizeof(relocInfo); }

  void  set_code_end(char* end);
  void  relocate(char* at, relocInfo::relocType rtype);

  void  decode();
  void  decode_all();

  void  copyTo(nmethod* nm);

  void  print();
};

#endif

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