8032247: SA: Constantpool lookup for invokedynamic is not implemented

Summary: implement constant pool lookup for invokedynamic
Reviewed-by: sla, sspitsyn

agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java

@@ -152,7 +152,7 @@ public class ConstantPool extends Metadata implements ClassConstants {
 
   private long indexOffset(long index) {
     if (Assert.ASSERTS_ENABLED) {
-      Assert.that(index > 0 && index < getLength(),  "invalid cp index " + index + " " + getLength());
+      Assert.that(index >= 0 && index < getLength(),  "invalid cp index " + index + " " + getLength());
     }
     return (index * getElementSize()) + headerSize;
   }

agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ByteCodeRewriter.java

@@ -98,11 +98,14 @@ public class ByteCodeRewriter
            break;
        default: throw new IllegalArgumentException();
        }
+
        if (cpCache == null) {
           return (short) cpCacheIndex;
        } else if (fmt.indexOf("JJJJ") >= 0) {
-          // change byte-ordering and go via secondary cache entry
-           throw new InternalError("unimplemented");
+          // Invokedynamic require special handling
+          cpCacheIndex = ~cpCacheIndex;
+          cpCacheIndex = bytes.swapInt(cpCacheIndex);
+          return (short) cpCache.getEntryAt(cpCacheIndex).getConstantPoolIndex();
        } else if (fmt.indexOf("JJ") >= 0) {
           // change byte-ordering and go via cache
           return (short) cpCache.getEntryAt((int) (0xFFFF & bytes.swapShort((short)cpCacheIndex))).getConstantPoolIndex();