Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/debugger/windows/x86/WindowsX86CFrame.java @ 10302:78332b46e604
6313816: SA: jstack -m fails on Win32 : UnalignedAddressException
Reviewed-by: sla, poonam
author | kevinw |
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date | Thu, 16 May 2013 12:40:27 +0100 |
parents | agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/x86/X86CFrame.java@b87e5a681416 |
children | de6a9e811145 |
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10301:17db82f22f1e | 10302:78332b46e604 |
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1 /* | |
2 * Copyright (c) 2001, 2012, 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 */ | |
24 | |
25 package sun.jvm.hotspot.debugger.windows.x86; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 import sun.jvm.hotspot.debugger.x86.*; | |
29 import sun.jvm.hotspot.debugger.cdbg.*; | |
30 import sun.jvm.hotspot.debugger.cdbg.basic.*; | |
31 import sun.jvm.hotspot.debugger.windbg.*; | |
32 | |
33 public class WindowsX86CFrame extends BasicCFrame { | |
34 private Address ebp; | |
35 private Address pc; | |
36 | |
37 private static final int ADDRESS_SIZE = 4; | |
38 | |
39 /** Constructor for topmost frame */ | |
40 public WindowsX86CFrame(WindbgDebugger dbg, Address ebp, Address pc) { | |
41 super(dbg.getCDebugger()); | |
42 this.ebp = ebp; | |
43 this.pc = pc; | |
44 this.dbg = dbg; | |
45 } | |
46 | |
47 public CFrame sender(ThreadProxy thread) { | |
48 X86ThreadContext context = (X86ThreadContext) thread.getContext(); | |
49 Address esp = context.getRegisterAsAddress(X86ThreadContext.ESP); | |
50 | |
51 if ( (ebp == null) || ebp.lessThan(esp) ) { | |
52 return null; | |
53 } | |
54 | |
55 // Check alignment of ebp | |
56 if ( dbg.getAddressValue(ebp) % ADDRESS_SIZE != 0) { | |
57 return null; | |
58 } | |
59 | |
60 Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); | |
61 if (nextEBP == null || nextEBP.lessThanOrEqual(ebp)) { | |
62 return null; | |
63 } | |
64 Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); | |
65 if (nextPC == null) { | |
66 return null; | |
67 } | |
68 return new WindowsX86CFrame(dbg, nextEBP, nextPC); | |
69 } | |
70 | |
71 public Address pc() { | |
72 return pc; | |
73 } | |
74 | |
75 public Address localVariableBase() { | |
76 return ebp; | |
77 } | |
78 | |
79 private WindbgDebugger dbg; | |
80 } |