1 /*
   2  * Copyright (c) 2001, 2002, 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  *

 113   public boolean isWide()             { return _is_wide; }
 114   public boolean isActiveBreakpoint() { return Bytecodes.isActiveBreakpointAt(_method, _bci); }
 115   public boolean isLastBytecode()     { return _next_bci >= _end_bci; }
 116 
 117   // State changes
 118   public void    setNextBCI(int bci)  {
 119     if (Assert.ASSERTS_ENABLED) {
 120       Assert.that(0 <= bci && bci <= _method.getCodeSize(), "illegal bci");
 121     }
 122     _next_bci = bci;
 123   }
 124 
 125   // Bytecode-specific attributes
 126   public int     dest()               { return bci() + _method.getBytecodeShortArg(bci() + 1); }
 127   public int     dest_w()             { return bci() + _method.getBytecodeIntArg(bci()   + 1); }
 128 
 129   // Unsigned indices, widening
 130   public int     getIndex()           { return (isWide())
 131                                           ? (_method.getBytecodeShortArg(bci() + 2) & 0xFFFF)
 132                                           : (_method.getBytecodeOrBPAt(bci() + 1) & 0xFF); }
 133   public int     getIndexBig()        { return _method.getBytecodeShortArg(bci() + 1); }



 134 



 135   // Fetch at absolute BCI (for manual parsing of certain bytecodes)
 136   public int     codeAt(int bci) {
 137     return _method.getBytecodeOrBPAt(bci);
 138   }
 139 }

   1 /*
   2  * Copyright (c) 2001, 2011, 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  *

 113   public boolean isWide()             { return _is_wide; }
 114   public boolean isActiveBreakpoint() { return Bytecodes.isActiveBreakpointAt(_method, _bci); }
 115   public boolean isLastBytecode()     { return _next_bci >= _end_bci; }
 116 
 117   // State changes
 118   public void    setNextBCI(int bci)  {
 119     if (Assert.ASSERTS_ENABLED) {
 120       Assert.that(0 <= bci && bci <= _method.getCodeSize(), "illegal bci");
 121     }
 122     _next_bci = bci;
 123   }
 124 
 125   // Bytecode-specific attributes
 126   public int     dest()               { return bci() + _method.getBytecodeShortArg(bci() + 1); }
 127   public int     dest_w()             { return bci() + _method.getBytecodeIntArg(bci()   + 1); }
 128 
 129   // Unsigned indices, widening
 130   public int     getIndex()           { return (isWide())
 131                                           ? (_method.getBytecodeShortArg(bci() + 2) & 0xFFFF)
 132                                           : (_method.getBytecodeOrBPAt(bci() + 1) & 0xFF); }
 133   public int     getIndexU1()         { return _method.getBytecodeOrBPAt(bci() + 1) & 0xFF; }
 134   public int     getIndexU2()         { return _method.getBytecodeShortArg(bci() + 1) & 0xFFFF; }
 135   public int     getIndexU4()         { return _method.getNativeIntArg(bci() + 1); }
 136   public boolean hasIndexU4()         { return code() == Bytecodes._invokedynamic; }
 137 
 138   public int     getIndexU1Cpcache()         { return _method.getBytecodeOrBPAt(bci() + 1) & 0xFF; }
 139   public int     getIndexU2Cpcache()         { return _method.getNativeShortArg(bci() + 1) & 0xFFFF; }
 140 
 141   // Fetch at absolute BCI (for manual parsing of certain bytecodes)
 142   public int     codeAt(int bci) {
 143     return _method.getBytecodeOrBPAt(bci);
 144   }
 145 }