Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/site/DataSectionReference.java @ 23398:3e8ce13f4e12
minimize diff to jvmci-9
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 17 May 2016 21:10:34 +0200 |
parents | 1d4ce2d19e52 |
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22054 | 1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
22054 | 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 */ | |
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23 package jdk.vm.ci.code.site; |
22054 | 24 |
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25 /** |
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26 * Represents a pointer to some location in the data section that should be {@link DataPatch |
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27 * patched} into the code. |
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28 */ |
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29 public final class DataSectionReference extends Reference { |
22054 | 30 |
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31 private boolean initialized; |
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32 private int offset; |
22054 | 33 |
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34 public DataSectionReference() { |
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35 // will be set after the data section layout is fixed |
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36 offset = 0xDEADDEAD; |
22054 | 37 } |
38 | |
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39 public int getOffset() { |
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40 assert initialized; |
22054 | 41 |
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42 return offset; |
22054 | 43 } |
44 | |
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45 public void setOffset(int offset) { |
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46 assert !initialized; |
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47 initialized = true; |
22054 | 48 |
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49 this.offset = offset; |
22054 | 50 } |
51 | |
52 @Override | |
53 public int hashCode() { | |
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54 return offset; |
22054 | 55 } |
56 | |
57 @Override | |
58 public boolean equals(Object obj) { | |
59 if (this == obj) { | |
60 return true; | |
61 } | |
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62 if (obj instanceof DataSectionReference) { |
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63 DataSectionReference that = (DataSectionReference) obj; |
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64 return this.offset == that.offset; |
22054 | 65 } |
66 return false; | |
67 } | |
68 | |
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69 @Override |
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70 public String toString() { |
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71 if (initialized) { |
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72 return String.format("DataSection[0x%x]", offset); |
22054 | 73 } else { |
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74 return "DataSection[?]"; |
22054 | 75 } |
76 } | |
77 } |