Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/posix/DSO.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 | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2001, 2003, 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 | |
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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). | |
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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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 package sun.jvm.hotspot.debugger.posix; | |
25 | |
26 import sun.jvm.hotspot.debugger.*; | |
27 import sun.jvm.hotspot.debugger.cdbg.*; | |
28 import sun.jvm.hotspot.debugger.posix.elf.*; | |
29 import sun.jvm.hotspot.utilities.memo.*; | |
30 | |
31 /** Provides a simple wrapper around the ELF library which handles | |
32 relocation. */ | |
33 public abstract class DSO implements LoadObject { | |
34 | |
35 private MemoizedObject file; // contains ELFFile | |
36 private String filename; | |
37 private Address addr; | |
38 private long size; | |
39 private IsDSO dso = new IsDSO(); | |
40 | |
41 class IsDSO extends MemoizedBoolean { | |
42 protected boolean computeValue() { | |
43 return getFile().getHeader().getFileType() == ELFHeader.FT_DYN; | |
44 } | |
45 }; | |
46 | |
47 class ELFFileByName extends MemoizedObject { | |
48 protected Object computeValue() { | |
49 return ELFFileParser.getParser().parse(DSO.this.filename); | |
50 } | |
51 }; | |
52 | |
53 class ELFFileByAddress extends MemoizedObject { | |
54 protected Object computeValue() { | |
55 return ELFFileParser.getParser().parse(new AddressDataSource(DSO.this.addr)); | |
56 } | |
57 }; | |
58 | |
59 public DSO(String filename, long size, Address relocation) throws ELFException { | |
60 this.filename = filename; | |
61 this.size = size; | |
62 this.addr = relocation; | |
63 this.file = new ELFFileByName(); | |
64 } | |
65 | |
66 public DSO(long size, Address relocation) throws ELFException { | |
67 this.addr = relocation; | |
68 this.size = size; | |
69 this.file = new ELFFileByAddress(); | |
70 } | |
71 | |
72 public String getName() { | |
73 return filename; | |
74 } | |
75 | |
76 public Address getBase() { | |
77 return addr; | |
78 } | |
79 | |
80 /** if this .so is unloaded and re-loaded in the same process at a different | |
81 base, change the base by calling this to avoid re-parsing the ELF. */ | |
82 public void setBase(Address newBase) { | |
83 addr = newBase; | |
84 if (filename == null) { | |
85 // ELFFile was created by address. we have to re-parse it. | |
86 file = new ELFFileByAddress(); | |
87 dso = new IsDSO(); | |
88 } | |
89 } | |
90 | |
91 public long getSize() { | |
92 return size; | |
93 } | |
94 | |
95 public CDebugInfoDataBase getDebugInfoDataBase() throws DebuggerException { | |
96 // FIXME: after stabs parser | |
97 return null; | |
98 } | |
99 | |
100 public BlockSym debugInfoForPC(Address pc) throws DebuggerException { | |
101 // FIXME: after stabs parser | |
102 return null; | |
103 } | |
104 | |
105 public ClosestSymbol closestSymbolToPC(Address pcAsAddr) throws DebuggerException { | |
106 boolean dso = isDSO(); | |
107 long offset = dso? pcAsAddr.minus(addr) : getAddressValue(pcAsAddr); | |
108 ELFSymbol sym = getFile().getHeader().getELFSymbol(offset); | |
109 return (sym != null)? createClosestSymbol(sym.getName(), offset - sym.getValue()) : null; | |
110 } | |
111 | |
112 public LineNumberInfo lineNumberForPC(Address pc) throws DebuggerException { | |
113 // FIXME: after stabs parser | |
114 return null; | |
115 } | |
116 | |
117 /** return true if file is a .so */ | |
118 public boolean isDSO() { | |
119 return dso.getValue(); | |
120 } | |
121 | |
122 /** Look up a symbol; returns absolute address or null if symbol was | |
123 not found. */ | |
124 public Address lookupSymbol(String symbol) throws ELFException { | |
125 ELFSymbol sym = getFile().getHeader().getELFSymbol(symbol); | |
126 if (sym == null) { | |
127 return null; | |
128 } | |
129 | |
130 long value = sym.getValue(); | |
131 if (isDSO()) { | |
132 return addr.addOffsetTo(value); | |
133 } else { | |
134 return newAddress(value); | |
135 } | |
136 } | |
137 | |
138 public boolean equals(Object o) { | |
139 if (o == null || !(o instanceof DSO)) { | |
140 return false; | |
141 } | |
142 DSO other = (DSO)o; | |
143 return getBase().equals(other.getBase()); | |
144 } | |
145 | |
146 public int hashCode() { | |
147 return getBase().hashCode(); | |
148 } | |
149 | |
150 protected ELFFile getFile() { | |
151 return (ELFFile) file.getValue(); | |
152 } | |
153 | |
154 protected abstract Address newAddress(long addr); | |
155 protected abstract long getAddressValue(Address addr); | |
156 | |
157 protected ClosestSymbol createClosestSymbol(String name, long diff) { | |
158 return new ClosestSymbol(name, diff); | |
159 } | |
160 } |