1 /*

     2  * Copyright (c) 2016, 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 jdk.vm.ci.code.site;

    24 

    25 public final class DataSectionReference extends Reference {

    26 

    27     private boolean initialized;

    28     private int offset;

    29 

    30     public DataSectionReference() {

    31         // will be set after the data section layout is fixed

    32         offset = 0xDEADDEAD;

    33     }

    34 

    35     public int getOffset() {

    36         assert initialized;

    37 

    38         return offset;

    39     }

    40 

    41     public void setOffset(int offset) {

    42         assert !initialized;

    43         initialized = true;

    44 

    45         this.offset = offset;

    46     }

    47 

    48     @Override

    49     public int hashCode() {

    50         return offset;

    51     }

    52 

    53     @Override

    54     public boolean equals(Object obj) {

    55         if (this == obj) {

    56             return true;

    57         }

    58         if (obj instanceof DataSectionReference) {

    59             DataSectionReference that = (DataSectionReference) obj;

    60             return this.offset == that.offset;

    61         }

    62         return false;

    63     }

    64 

    65     @Override

    66     public String toString() {

    67         if (initialized) {

    68             return String.format("DataSection[0x%x]", offset);

    69         } else {

    70             return "DataSection[?]";

    71         }

    72     }

    73 }