Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/CFrame.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c18cbe5936b8 |
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1 /* | |
2 * Copyright 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.debugger.cdbg; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 | |
29 /** Models a "C" programming language frame on the stack -- really | |
30 just an arbitrary frame with hooks to access C and C++ debug | |
31 information if available. It is recommended that implementors of | |
32 this interface derive from BasicCFrame, which provides some of the | |
33 functionality. */ | |
34 | |
35 public interface CFrame { | |
36 /** Returns null when no more frames on stack */ | |
37 public CFrame sender(); | |
38 | |
39 /** Get the program counter of this frame */ | |
40 public Address pc(); | |
41 | |
42 /** Get the loadobject in which the PC lies. Returns null if the PC | |
43 is not contained in any of the loadobjects in the target | |
44 process. */ | |
45 public LoadObject loadObjectForPC(); | |
46 | |
47 /** If debug information is available, retrieves the block in which | |
48 the program counter lies. Returns null if there is no debug | |
49 information for the current program counter or if the PC could | |
50 not be located for other reasons. */ | |
51 public BlockSym blockForPC(); | |
52 | |
53 /** For the loadobject in which the PC lies, fetch the name of the | |
54 closest exported symbol and the distance of the PC to that | |
55 symbol. Returns null if the PC was not within any of the | |
56 loadobjects of the target process. FIXME: specify whether this | |
57 is mangled/demangled. */ | |
58 public ClosestSymbol closestSymbolToPC(); | |
59 | |
60 /** Gets the base pointer in this frame from which local variable | |
61 offsets in the debug info are based. Typically this is the | |
62 base-of-frame pointer (EBP on x86, FP/I6 on SPARC). */ | |
63 public Address localVariableBase(); | |
64 | |
65 /** Visit all local variables in this frame if debug information is | |
66 available. Automatically descends into compound types and arrays. */ | |
67 public void iterateLocals(ObjectVisitor v); | |
68 } |