1 /*
   2  * Copyright (c) 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  */
  23 package com.oracle.graal.hotspot.meta;
  24 
  25 import com.oracle.graal.api.meta.*;
  26 import com.oracle.graal.bytecode.*;
  27 import com.oracle.graal.hotspot.*;
  28 
  29 /**
  30  * Implementation of {@link ConstantPool} for HotSpot.
  31  */
  32 public class HotSpotConstantPool extends CompilerObject implements ConstantPool {
  33 
  34     private static final long serialVersionUID = -5443206401485234850L;
  35 
  36     private final HotSpotResolvedObjectType type;
  37 
  38     public HotSpotConstantPool(HotSpotResolvedObjectType type) {
  39         this.type = type;
  40     }
  41 
  42     @Override
  43     public int length() {
  44         return HotSpotGraalRuntime.getInstance().getCompilerToVM().constantPoolLength(type);
  45     }
  46 
  47     @Override
  48     public Object lookupConstant(int cpi) {
  49         assert cpi != 0;
  50         Object constant = HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupConstantInPool(type, cpi);
  51         return constant;
  52     }
  53 
  54     @Override
  55     public Signature lookupSignature(int cpi) {
  56         throw new UnsupportedOperationException();
  57     }
  58 
  59     @Override
  60     public Object lookupAppendix(int cpi, int opcode) {
  61         assert Bytecodes.isInvoke(opcode);
  62         return HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupAppendixInPool(type, cpi, (byte) opcode);
  63     }
  64 
  65     @Override
  66     public JavaMethod lookupMethod(int cpi, int opcode) {
  67         return HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupMethodInPool(type, cpi, (byte) opcode);
  68     }
  69 
  70     @Override
  71     public JavaType lookupType(int cpi, int opcode) {
  72         return HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupTypeInPool(type, cpi);
  73     }
  74 
  75     @Override
  76     public JavaField lookupField(int cpi, int opcode) {
  77         return HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupFieldInPool(type, cpi, (byte) opcode);
  78     }
  79 
  80     @Override
  81     public void loadReferencedType(int cpi, int opcode) {
  82         HotSpotGraalRuntime.getInstance().getCompilerToVM().lookupReferencedTypeInPool(type, cpi, (byte) opcode);
  83     }
  84 }