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comparison agent/src/share/classes/sun/jvm/hotspot/code/Stub.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.code;
26
27 import java.io.*;
28 import sun.jvm.hotspot.code.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.utilities.*;
32
33 /** A port of the VM's Stub mechanism. Note that the separation of
34 Stub and StubInterface (done in the VM to save space) is not
35 currently necessary in these APIs and has been flattened so that
36 class Stub has virtual functions overridden by concrete
37 subclasses. */
38
39 public class Stub extends VMObject {
40
41 public Stub(Address addr) {
42 super(addr);
43 }
44
45 // NOTE (FIXME): initialize(int) / finalize() elided for now
46
47 //
48 // General info/converters
49 //
50
51 /** Must return the size provided by initialize */
52 public long getSize() { Assert.that(false, "should not call this"); return 0; }
53 // NOTE (FIXME): code_size_to_size elided for now (would be a good reason for inserting the StubInterface abstraction)
54 /** Needed to add this for iteration */
55 public Address getAddress() { return addr; }
56
57 //
58 // Code info
59 //
60
61 /** Points to the first byte of the code */
62 public Address codeBegin() { Assert.that(false, "should not call this"); return null; }
63 /** Points to the first byte after the code */
64 public Address codeEnd() { Assert.that(false, "should not call this"); return null; }
65
66 //
67 // Debugging
68 //
69
70 /** Verifies the Stub */
71 public void verify() { Assert.that(false, "should not call this"); }
72 /** Prints some information about the stub */
73 public void printOn(PrintStream tty) { Assert.that(false, "should not call this"); }
74 }