Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoad.java @ 17524:89152779163c
Merge with jdk8-b132
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 15 Oct 2014 11:59:32 +0200 |
parents | c18cbe5936b8 |
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0 | 1 /* |
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2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.interpreter; | |
26 | |
27 import sun.jvm.hotspot.oops.*; | |
28 import sun.jvm.hotspot.utilities.*; | |
29 | |
30 public class BytecodeLoad extends BytecodeLoadStore { | |
31 BytecodeLoad(Method method, int bci) { | |
32 super(method, bci); | |
33 } | |
34 | |
35 public void verify() { | |
36 if (Assert.ASSERTS_ENABLED) { | |
37 Assert.that(isValid(), "check load"); | |
38 } | |
39 } | |
40 | |
41 public boolean isValid() { | |
42 int jcode = javaCode(); | |
43 switch (jcode) { | |
44 case Bytecodes._iload: | |
45 case Bytecodes._lload: | |
46 case Bytecodes._fload: | |
47 case Bytecodes._dload: | |
48 case Bytecodes._aload: | |
49 return true; | |
50 default: | |
51 return false; | |
52 } | |
53 } | |
54 | |
55 public static BytecodeLoad at(Method method, int bci) { | |
56 BytecodeLoad b = new BytecodeLoad(method, bci); | |
57 if (Assert.ASSERTS_ENABLED) { | |
58 b.verify(); | |
59 } | |
60 return b; | |
61 } | |
62 | |
63 /** Like at, but returns null if the BCI is not at load */ | |
64 public static BytecodeLoad atCheck(Method method, int bci) { | |
65 BytecodeLoad b = new BytecodeLoad(method, bci); | |
66 return (b.isValid() ? b : null); | |
67 } | |
68 | |
69 public static BytecodeLoad at(BytecodeStream bcs) { | |
70 return new BytecodeLoad(bcs.method(), bcs.bci()); | |
71 } | |
72 } |