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 package sun.jvm.hotspot.interpreter;
  26 
  27 import sun.jvm.hotspot.oops.*;
  28 import sun.jvm.hotspot.runtime.*;
  29 
  30 // any bytecode with constant pool index
  31 
  32 public abstract class BytecodeWithCPIndex extends Bytecode {
  33   BytecodeWithCPIndex(Method method, int bci) {
  34     super(method, bci);
  35   }
  36 
  37   // the constant pool index for this bytecode
  38   public int index() { return 0xFFFF & javaShortAt(1); }
  39 
  40   public int getSecondaryIndex() {
  41      throw new IllegalArgumentException("must be invokedynamic");
  42   }
  43 
  44   protected int indexForFieldOrMethod() {
  45      ConstantPoolCache cpCache = method().getConstants().getCache();
  46      // get ConstantPool index from ConstantPoolCacheIndex at given bci
  47      int cpCacheIndex = index();
  48      if (cpCache == null) {
  49         return cpCacheIndex;
  50      } else if (code() == Bytecodes._invokedynamic) {
  51         int secondaryIndex = getSecondaryIndex();
  52         return cpCache.getMainEntryAt(secondaryIndex).getConstantPoolIndex();
  53      } else {
  54         // change byte-ordering and go via cache
  55         return cpCache.getEntryAt((int) (0xFFFF & VM.getVM().getBytes().swapShort((short) cpCacheIndex))).getConstantPoolIndex();
  56      }
  57   }
  58 }

  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 package sun.jvm.hotspot.interpreter;
  26 
  27 import sun.jvm.hotspot.oops.*;
  28 import sun.jvm.hotspot.runtime.*;
  29 
  30 // any bytecode with constant pool index
  31 
  32 public abstract class BytecodeWithCPIndex extends Bytecode {
  33   BytecodeWithCPIndex(Method method, int bci) {
  34     super(method, bci);
  35   }
  36 
  37   // the constant pool index for this bytecode
  38   public int index() { return getIndexU2(code(), false); }
  39 
  40   public int getSecondaryIndex() {
  41      throw new IllegalArgumentException("must be invokedynamic");
  42   }
  43 
  44   protected int indexForFieldOrMethod() {
  45      ConstantPoolCache cpCache = method().getConstants().getCache();
  46      // get ConstantPool index from ConstantPoolCacheIndex at given bci
  47      int cpCacheIndex = index();
  48      if (cpCache == null) {
  49         return cpCacheIndex;
  50      } else if (code() == Bytecodes._invokedynamic) {
  51         int secondaryIndex = getSecondaryIndex();
  52         return cpCache.getMainEntryAt(secondaryIndex).getConstantPoolIndex();
  53      } else {
  54         // change byte-ordering and go via cache
  55         return cpCache.getEntryAt((int) (0xFFFF & VM.getVM().getBytes().swapShort((short) cpCacheIndex))).getConstantPoolIndex();
  56      }
  57   }
  58 }