Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java @ 17736:58fc1b1523dc
8034079: G1: Refactor the HeapRegionSet hierarchy
Reviewed-by: tschatzl, pliden
author | brutisso |
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date | Fri, 14 Mar 2014 10:15:46 +0100 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
mikael
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2 * Copyright (c) 2003, 2013, 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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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.debugger.linux.x86; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 import sun.jvm.hotspot.debugger.linux.*; | |
29 import sun.jvm.hotspot.debugger.cdbg.*; | |
30 import sun.jvm.hotspot.debugger.cdbg.basic.*; | |
6163 | 31 import sun.jvm.hotspot.debugger.x86.*; |
0 | 32 |
33 final public class LinuxX86CFrame extends BasicCFrame { | |
34 // package/class internals only | |
35 public LinuxX86CFrame(LinuxDebugger dbg, Address ebp, Address pc) { | |
36 super(dbg.getCDebugger()); | |
37 this.ebp = ebp; | |
38 this.pc = pc; | |
39 this.dbg = dbg; | |
40 } | |
41 | |
42 // override base class impl to avoid ELF parsing | |
43 public ClosestSymbol closestSymbolToPC() { | |
44 // try native lookup in debugger. | |
45 return dbg.lookup(dbg.getAddressValue(pc())); | |
46 } | |
47 | |
48 public Address pc() { | |
49 return pc; | |
50 } | |
51 | |
52 public Address localVariableBase() { | |
53 return ebp; | |
54 } | |
55 | |
6163 | 56 public CFrame sender(ThreadProxy thread) { |
57 X86ThreadContext context = (X86ThreadContext) thread.getContext(); | |
58 Address esp = context.getRegisterAsAddress(X86ThreadContext.ESP); | |
59 | |
60 if ( (ebp == null) || ebp.lessThan(esp) ) { | |
0 | 61 return null; |
62 } | |
63 | |
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7178741: SA: jstack -m produce UnalignedAddressException in output (Linux)
kevinw
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64 // Check alignment of ebp |
651919d134f7
7178741: SA: jstack -m produce UnalignedAddressException in output (Linux)
kevinw
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65 if ( dbg.getAddressValue(ebp) % ADDRESS_SIZE != 0) { |
651919d134f7
7178741: SA: jstack -m produce UnalignedAddressException in output (Linux)
kevinw
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66 return null; |
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7178741: SA: jstack -m produce UnalignedAddressException in output (Linux)
kevinw
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67 } |
651919d134f7
7178741: SA: jstack -m produce UnalignedAddressException in output (Linux)
kevinw
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6163
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68 |
0 | 69 Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); |
8672
651919d134f7
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kevinw
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70 if (nextEBP == null || nextEBP.lessThanOrEqual(ebp)) { |
0 | 71 return null; |
72 } | |
73 Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); | |
74 if (nextPC == null) { | |
75 return null; | |
76 } | |
77 return new LinuxX86CFrame(dbg, nextEBP, nextPC); | |
78 } | |
79 | |
80 private static final int ADDRESS_SIZE = 4; | |
81 private Address pc; | |
82 private Address ebp; | |
83 private LinuxDebugger dbg; | |
84 } |