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annotate 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 |
rev | line source |
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0 | 1 /* |
6163 | 2 * Copyright (c) 2001, 2012, 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 * | |
1552
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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 | |
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25 package sun.jvm.hotspot.debugger.windows.x86; |
0 | 26 |
27 import sun.jvm.hotspot.debugger.*; | |
6163 | 28 import sun.jvm.hotspot.debugger.x86.*; |
0 | 29 import sun.jvm.hotspot.debugger.cdbg.*; |
30 import sun.jvm.hotspot.debugger.cdbg.basic.*; | |
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31 import sun.jvm.hotspot.debugger.windbg.*; |
0 | 32 |
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33 public class WindowsX86CFrame extends BasicCFrame { |
0 | 34 private Address ebp; |
35 private Address pc; | |
36 | |
37 private static final int ADDRESS_SIZE = 4; | |
38 | |
39 /** Constructor for topmost frame */ | |
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40 public WindowsX86CFrame(WindbgDebugger dbg, Address ebp, Address pc) { |
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41 super(dbg.getCDebugger()); |
0 | 42 this.ebp = ebp; |
43 this.pc = pc; | |
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44 this.dbg = dbg; |
0 | 45 } |
46 | |
6163 | 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) ) { | |
0 | 52 return null; |
53 } | |
54 | |
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55 // Check alignment of ebp |
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56 if ( dbg.getAddressValue(ebp) % ADDRESS_SIZE != 0) { |
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57 return null; |
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58 } |
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59 |
0 | 60 Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); |
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61 if (nextEBP == null || nextEBP.lessThanOrEqual(ebp)) { |
0 | 62 return null; |
63 } | |
64 Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); | |
65 if (nextPC == null) { | |
66 return null; | |
67 } | |
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68 return new WindowsX86CFrame(dbg, nextEBP, nextPC); |
0 | 69 } |
70 | |
71 public Address pc() { | |
72 return pc; | |
73 } | |
74 | |
75 public Address localVariableBase() { | |
76 return ebp; | |
77 } | |
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78 |
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79 private WindbgDebugger dbg; |
0 | 80 } |