001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    package gnu.classpath;
014    
015    import org.vmmagic.unboxed.Address;
016    
017    import org.jikesrvm.VM;
018    
019    /**
020     * Library support interface of Jikes RVM
021     */
022    public class JikesRVMSupport {
023      public static Address getAddressFromPointer(Pointer pointer) {
024        if (VM.BuildFor32Addr)
025          return Address.fromIntSignExtend(((Pointer32)pointer).data);
026        else
027          return Address.fromLong(((Pointer64)pointer).data);
028      }
029    
030      public static Pointer getPointerFromAddress(Address address) {
031        if (VM.BuildFor32Addr)
032          return new Pointer32(address.toInt());
033        else
034          return new Pointer64(address.toLong());
035      }
036    }