1 /*
   2  * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_relocator.cpp.incl"






  27 
  28 #define MAX_METHOD_LENGTH  65535
  29 
  30 #define MAX_SHORT ((1 << 15) - 1)
  31 #define MIN_SHORT (- (1 << 15))
  32 
  33 // Encapsulates a code change request. There are 3 types.
  34 // General instruction, jump instruction, and table/lookup switches
  35 //
  36 class ChangeItem : public ResourceObj {
  37   int _bci;
  38  public:
  39    ChangeItem(int bci) { _bci = bci; }
  40    virtual bool handle_code_change(Relocator *r) = 0;
  41 
  42    // type info
  43    virtual bool is_widen()      { return false; }
  44    virtual bool is_jump_widen() { return false; }
  45    virtual bool is_switch_pad() { return false; }
  46 

   1 /*
   2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/stackMapTableFormat.hpp"
  27 #include "interpreter/bytecodes.hpp"
  28 #include "memory/oopFactory.hpp"
  29 #include "memory/universe.inline.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "runtime/handles.inline.hpp"
  32 #include "runtime/relocator.hpp"
  33 
  34 #define MAX_METHOD_LENGTH  65535
  35 
  36 #define MAX_SHORT ((1 << 15) - 1)
  37 #define MIN_SHORT (- (1 << 15))
  38 
  39 // Encapsulates a code change request. There are 3 types.
  40 // General instruction, jump instruction, and table/lookup switches
  41 //
  42 class ChangeItem : public ResourceObj {
  43   int _bci;
  44  public:
  45    ChangeItem(int bci) { _bci = bci; }
  46    virtual bool handle_code_change(Relocator *r) = 0;
  47 
  48    // type info
  49    virtual bool is_widen()      { return false; }
  50    virtual bool is_jump_widen() { return false; }
  51    virtual bool is_switch_pad() { return false; }
  52