Mercurial > hg > graal-compiler
comparison agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2003 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.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.*; | |
31 | |
32 final public class LinuxX86CFrame extends BasicCFrame { | |
33 // package/class internals only | |
34 public LinuxX86CFrame(LinuxDebugger dbg, Address ebp, Address pc) { | |
35 super(dbg.getCDebugger()); | |
36 this.ebp = ebp; | |
37 this.pc = pc; | |
38 this.dbg = dbg; | |
39 } | |
40 | |
41 // override base class impl to avoid ELF parsing | |
42 public ClosestSymbol closestSymbolToPC() { | |
43 // try native lookup in debugger. | |
44 return dbg.lookup(dbg.getAddressValue(pc())); | |
45 } | |
46 | |
47 public Address pc() { | |
48 return pc; | |
49 } | |
50 | |
51 public Address localVariableBase() { | |
52 return ebp; | |
53 } | |
54 | |
55 public CFrame sender() { | |
56 if (ebp == null) { | |
57 return null; | |
58 } | |
59 | |
60 Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); | |
61 if (nextEBP == null) { | |
62 return null; | |
63 } | |
64 Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); | |
65 if (nextPC == null) { | |
66 return null; | |
67 } | |
68 return new LinuxX86CFrame(dbg, nextEBP, nextPC); | |
69 } | |
70 | |
71 private static final int ADDRESS_SIZE = 4; | |
72 private Address pc; | |
73 private Address ebp; | |
74 private LinuxDebugger dbg; | |
75 } |