0
|
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 }
|