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1 /*
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2 * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.debugger.linux;
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26
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27 import java.io.*;
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28 import java.util.*;
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29 import sun.jvm.hotspot.debugger.*;
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30 import sun.jvm.hotspot.debugger.cdbg.*;
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31 import sun.jvm.hotspot.debugger.x86.*;
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32 import sun.jvm.hotspot.debugger.amd64.*;
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33 import sun.jvm.hotspot.debugger.sparc.*;
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34 import sun.jvm.hotspot.debugger.linux.x86.*;
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35 import sun.jvm.hotspot.debugger.linux.amd64.*;
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36 import sun.jvm.hotspot.debugger.linux.sparc.*;
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37 import sun.jvm.hotspot.utilities.*;
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38
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39 class LinuxCDebugger implements CDebugger {
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40 private LinuxDebugger dbg;
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41
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42 LinuxCDebugger(LinuxDebugger dbg) {
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43 this.dbg = dbg;
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44 }
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45
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46 public List getThreadList() throws DebuggerException {
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47 return dbg.getThreadList();
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48 }
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49
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50 public List/*<LoadObject>*/ getLoadObjectList() throws DebuggerException {
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51 return dbg.getLoadObjectList();
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52 }
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53
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54 public LoadObject loadObjectContainingPC(Address pc) throws DebuggerException {
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55 if (pc == null) {
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56 return null;
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57 }
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58 List objs = getLoadObjectList();
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59 Object[] arr = objs.toArray();
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60 // load objects are sorted by base address, do binary search
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61 int mid = -1;
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62 int low = 0;
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63 int high = arr.length - 1;
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64
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65 while (low <= high) {
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66 mid = (low + high) >> 1;
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67 LoadObject midVal = (LoadObject) arr[mid];
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68 long cmp = pc.minus(midVal.getBase());
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69 if (cmp < 0) {
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70 high = mid - 1;
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71 } else if (cmp > 0) {
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72 long size = midVal.getSize();
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73 if (cmp >= size) {
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74 low = mid + 1;
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75 } else {
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76 return (LoadObject) arr[mid];
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77 }
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78 } else { // match found
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79 return (LoadObject) arr[mid];
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80 }
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81 }
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82 // no match found.
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83 return null;
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84 }
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85
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86 public CFrame topFrameForThread(ThreadProxy thread) throws DebuggerException {
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87 String cpu = dbg.getCPU();
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88 if (cpu.equals("x86")) {
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89 X86ThreadContext context = (X86ThreadContext) thread.getContext();
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90 Address ebp = context.getRegisterAsAddress(X86ThreadContext.EBP);
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91 if (ebp == null) return null;
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92 Address pc = context.getRegisterAsAddress(X86ThreadContext.EIP);
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93 if (pc == null) return null;
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94 return new LinuxX86CFrame(dbg, ebp, pc);
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95 } else if (cpu.equals("amd64")) {
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96 AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext();
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97 Address rbp = context.getRegisterAsAddress(AMD64ThreadContext.RBP);
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98 if (rbp == null) return null;
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99 Address pc = context.getRegisterAsAddress(AMD64ThreadContext.RIP);
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100 if (pc == null) return null;
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101 return new LinuxAMD64CFrame(dbg, rbp, pc);
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102 } else if (cpu.equals("sparc")) {
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103 SPARCThreadContext context = (SPARCThreadContext) thread.getContext();
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104 Address sp = context.getRegisterAsAddress(SPARCThreadContext.R_SP);
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105 if (sp == null) return null;
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106 Address pc = context.getRegisterAsAddress(SPARCThreadContext.R_O7);
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107 if (pc == null) return null;
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108 return new LinuxSPARCCFrame(dbg, sp, pc, LinuxDebuggerLocal.getAddressSize());
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109 } else {
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110 throw new DebuggerException(cpu + " is not yet supported");
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111 }
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112 }
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113
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114 public String getNameOfFile(String fileName) {
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115 return new File(fileName).getName();
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116 }
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117
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118 public ProcessControl getProcessControl() throws DebuggerException {
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119 // FIXME: after stabs parser
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120 return null;
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121 }
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122
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123 public boolean canDemangle() {
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124 return false;
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125 }
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126
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127 public String demangle(String sym) {
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128 throw new UnsupportedOperationException();
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129 }
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130 }
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