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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxCDebugger.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2003-2006 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;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.debugger.cdbg.*;
31 import sun.jvm.hotspot.debugger.x86.*;
32 import sun.jvm.hotspot.debugger.amd64.*;
33 import sun.jvm.hotspot.debugger.sparc.*;
34 import sun.jvm.hotspot.debugger.linux.x86.*;
35 import sun.jvm.hotspot.debugger.linux.amd64.*;
36 import sun.jvm.hotspot.debugger.linux.sparc.*;
37 import sun.jvm.hotspot.utilities.*;
38
39 class LinuxCDebugger implements CDebugger {
40 private LinuxDebugger dbg;
41
42 LinuxCDebugger(LinuxDebugger dbg) {
43 this.dbg = dbg;
44 }
45
46 public List getThreadList() throws DebuggerException {
47 return dbg.getThreadList();
48 }
49
50 public List/*<LoadObject>*/ getLoadObjectList() throws DebuggerException {
51 return dbg.getLoadObjectList();
52 }
53
54 public LoadObject loadObjectContainingPC(Address pc) throws DebuggerException {
55 if (pc == null) {
56 return null;
57 }
58 List objs = getLoadObjectList();
59 Object[] arr = objs.toArray();
60 // load objects are sorted by base address, do binary search
61 int mid = -1;
62 int low = 0;
63 int high = arr.length - 1;
64
65 while (low <= high) {
66 mid = (low + high) >> 1;
67 LoadObject midVal = (LoadObject) arr[mid];
68 long cmp = pc.minus(midVal.getBase());
69 if (cmp < 0) {
70 high = mid - 1;
71 } else if (cmp > 0) {
72 long size = midVal.getSize();
73 if (cmp >= size) {
74 low = mid + 1;
75 } else {
76 return (LoadObject) arr[mid];
77 }
78 } else { // match found
79 return (LoadObject) arr[mid];
80 }
81 }
82 // no match found.
83 return null;
84 }
85
86 public CFrame topFrameForThread(ThreadProxy thread) throws DebuggerException {
87 String cpu = dbg.getCPU();
88 if (cpu.equals("x86")) {
89 X86ThreadContext context = (X86ThreadContext) thread.getContext();
90 Address ebp = context.getRegisterAsAddress(X86ThreadContext.EBP);
91 if (ebp == null) return null;
92 Address pc = context.getRegisterAsAddress(X86ThreadContext.EIP);
93 if (pc == null) return null;
94 return new LinuxX86CFrame(dbg, ebp, pc);
95 } else if (cpu.equals("amd64")) {
96 AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext();
97 Address rbp = context.getRegisterAsAddress(AMD64ThreadContext.RBP);
98 if (rbp == null) return null;
99 Address pc = context.getRegisterAsAddress(AMD64ThreadContext.RIP);
100 if (pc == null) return null;
101 return new LinuxAMD64CFrame(dbg, rbp, pc);
102 } else if (cpu.equals("sparc")) {
103 SPARCThreadContext context = (SPARCThreadContext) thread.getContext();
104 Address sp = context.getRegisterAsAddress(SPARCThreadContext.R_SP);
105 if (sp == null) return null;
106 Address pc = context.getRegisterAsAddress(SPARCThreadContext.R_O7);
107 if (pc == null) return null;
108 return new LinuxSPARCCFrame(dbg, sp, pc, LinuxDebuggerLocal.getAddressSize());
109 } else {
110 throw new DebuggerException(cpu + " is not yet supported");
111 }
112 }
113
114 public String getNameOfFile(String fileName) {
115 return new File(fileName).getName();
116 }
117
118 public ProcessControl getProcessControl() throws DebuggerException {
119 // FIXME: after stabs parser
120 return null;
121 }
122
123 public boolean canDemangle() {
124 return false;
125 }
126
127 public String demangle(String sym) {
128 throw new UnsupportedOperationException();
129 }
130 }