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0
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1 /*
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2 * Copyright 2002 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.windbg;
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26
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27 import sun.jvm.hotspot.debugger.*;
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28
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29 class WindbgAddress implements Address {
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30 protected WindbgDebugger debugger;
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31 protected long addr;
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32
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33 WindbgAddress(WindbgDebugger debugger, long addr) {
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34 this.debugger = debugger;
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35 this.addr = addr;
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36 }
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37
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38 //
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39 // Basic Java routines
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40 //
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41
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42 public boolean equals(Object arg) {
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43 if (arg == null) {
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44 return false;
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45 }
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46
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47 if (!(arg instanceof WindbgAddress)) {
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48 return false;
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49 }
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50
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51 return (addr == ((WindbgAddress) arg).addr);
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52 }
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53
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54 public int hashCode() {
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55 // FIXME: suggestions on a better hash code?
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56 return (int) addr;
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57 }
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58
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59 public String toString() {
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60 return debugger.addressValueToString(addr);
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61 }
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62
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63 //
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64 // C/C++-related routines
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65 //
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66
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67 public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) throws UnalignedAddressException, UnmappedAddressException {
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68 return debugger.readCInteger(addr + offset, numBytes, isUnsigned);
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69 }
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70
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71 public Address getAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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72 return debugger.readAddress(addr + offset);
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73 }
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74
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75 //
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76 // Java-related routines
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77 //
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78
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79 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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80 return debugger.readJBoolean(addr + offset);
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81 }
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82
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83 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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84 return debugger.readJByte(addr + offset);
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85 }
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86
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87 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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88 return debugger.readJChar(addr + offset);
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89 }
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90
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91 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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92 return debugger.readJDouble(addr + offset);
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93 }
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94
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95 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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96 return debugger.readJFloat(addr + offset);
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97 }
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98
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99 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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100 return debugger.readJInt(addr + offset);
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101 }
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102
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103 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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104 return debugger.readJLong(addr + offset);
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105 }
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106
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107 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
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108 return debugger.readJShort(addr + offset);
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109 }
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110
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111 public OopHandle getOopHandleAt(long offset)
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112 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
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113 return debugger.readOopHandle(addr + offset);
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114 }
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115
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116 //
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117 // C/C++-related mutators
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118 //
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119
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120 public void setCIntegerAt(long offset, long numBytes, long value) {
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121 throw new DebuggerException("Unimplemented");
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122 }
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123 public void setAddressAt(long offset, Address value) {
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124 throw new DebuggerException("Unimplemented");
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125 }
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126
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127 //
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128 // Java-related mutators
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129 //
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130
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131 // Mutators -- not implemented for now (FIXME)
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132 public void setJBooleanAt (long offset, boolean value)
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133 throws UnmappedAddressException, UnalignedAddressException {
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134 throw new DebuggerException("Unimplemented");
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135 }
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136 public void setJByteAt (long offset, byte value)
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137 throws UnmappedAddressException, UnalignedAddressException {
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138 throw new DebuggerException("Unimplemented");
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139 }
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140 public void setJCharAt (long offset, char value)
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141 throws UnmappedAddressException, UnalignedAddressException {
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142 throw new DebuggerException("Unimplemented");
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143 }
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144 public void setJDoubleAt (long offset, double value)
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145 throws UnmappedAddressException, UnalignedAddressException {
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146 throw new DebuggerException("Unimplemented");
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147 }
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148 public void setJFloatAt (long offset, float value)
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149 throws UnmappedAddressException, UnalignedAddressException {
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150 throw new DebuggerException("Unimplemented");
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151 }
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152 public void setJIntAt (long offset, int value)
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153 throws UnmappedAddressException, UnalignedAddressException {
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154 throw new DebuggerException("Unimplemented");
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155 }
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156 public void setJLongAt (long offset, long value)
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157 throws UnmappedAddressException, UnalignedAddressException {
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158 throw new DebuggerException("Unimplemented");
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159 }
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160 public void setJShortAt (long offset, short value)
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161 throws UnmappedAddressException, UnalignedAddressException {
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162 throw new DebuggerException("Unimplemented");
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163 }
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164 public void setOopHandleAt (long offset, OopHandle value)
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165 throws UnmappedAddressException, UnalignedAddressException {
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166 throw new DebuggerException("Unimplemented");
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167 }
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168
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169 //
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170 // Arithmetic operations -- necessary evil.
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171 //
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172
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173 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
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174 long value = addr + offset;
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175 if (value == 0) {
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176 return null;
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177 }
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178 return new WindbgAddress(debugger, value);
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179 }
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180
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181 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
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182 long value = addr + offset;
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183 if (value == 0) {
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184 return null;
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185 }
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186 return new WindbgOopHandle(debugger, value);
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187 }
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188
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189 /** (FIXME: any signed/unsigned issues? Should this work for
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190 OopHandles?) */
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191 public long minus(Address arg) {
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192 if (arg == null) {
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193 return addr;
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194 }
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195 return addr - ((WindbgAddress) arg).addr;
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196 }
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197
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198 // Two's complement representation.
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199 // All negative numbers are larger than positive numbers.
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200 // Numbers with the same sign can be compared normally.
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201 // Test harness is below in main().
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202
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203 public boolean lessThan (Address a) {
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204 if (a == null) {
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205 return false;
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206 }
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207 WindbgAddress arg = (WindbgAddress) a;
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208 if ((addr >= 0) && (arg.addr < 0)) {
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209 return true;
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210 }
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211 if ((addr < 0) && (arg.addr >= 0)) {
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212 return false;
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213 }
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214 return (addr < arg.addr);
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215 }
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216
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217 public boolean lessThanOrEqual (Address a) {
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218 if (a == null) {
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219 return false;
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220 }
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221 WindbgAddress arg = (WindbgAddress) a;
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222 if ((addr >= 0) && (arg.addr < 0)) {
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223 return true;
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224 }
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225 if ((addr < 0) && (arg.addr >= 0)) {
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226 return false;
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227 }
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228 return (addr <= arg.addr);
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229 }
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230
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231 public boolean greaterThan (Address a) {
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232 if (a == null) {
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233 return true;
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234 }
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235 WindbgAddress arg = (WindbgAddress) a;
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236 if ((addr >= 0) && (arg.addr < 0)) {
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237 return false;
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238 }
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239 if ((addr < 0) && (arg.addr >= 0)) {
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240 return true;
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241 }
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242 return (addr > arg.addr);
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243 }
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244
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245 public boolean greaterThanOrEqual(Address a) {
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246 if (a == null) {
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247 return true;
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248 }
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249 WindbgAddress arg = (WindbgAddress) a;
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250 if ((addr >= 0) && (arg.addr < 0)) {
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251 return false;
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252 }
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253 if ((addr < 0) && (arg.addr >= 0)) {
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254 return true;
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255 }
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256 return (addr >= arg.addr);
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257 }
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258
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259 public Address andWithMask(long mask) throws UnsupportedOperationException {
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260 long value = addr & mask;
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261 if (value == 0) {
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262 return null;
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263 }
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264 return new WindbgAddress(debugger, value);
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265 }
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266
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267 public Address orWithMask(long mask) throws UnsupportedOperationException {
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268 long value = addr | mask;
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269 if (value == 0) {
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270 return null;
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271 }
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272 return new WindbgAddress(debugger, value);
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273 }
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274
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275 public Address xorWithMask(long mask) throws UnsupportedOperationException {
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276 long value = addr ^ mask;
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277 if (value == 0) {
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278 return null;
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279 }
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280 return new WindbgAddress(debugger, value);
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281 }
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282
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283
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284 //--------------------------------------------------------------------------------
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285 // Internals only below this point
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286 //
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287
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288 long getValue() {
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289 return addr;
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290 }
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291
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292
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293 private static void check(boolean arg, String failMessage) {
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294 if (!arg) {
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295 System.err.println(failMessage + ": FAILED");
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296 System.exit(1);
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297 }
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298 }
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299
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300 // Test harness
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301 public static void main(String[] args) {
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302 // p/n indicates whether the interior address is really positive
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303 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
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304
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305 WindbgAddress p1 = new WindbgAddress(null, 0x7FFFFFFFFFFFFFF0L);
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306 WindbgAddress p2 = (WindbgAddress) p1.addOffsetTo(10);
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307 WindbgAddress n1 = (WindbgAddress) p2.addOffsetTo(10);
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308 WindbgAddress n2 = (WindbgAddress) n1.addOffsetTo(10);
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309
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310 // lessThan positive tests
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311 check(p1.lessThan(p2), "lessThan 1");
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312 check(p1.lessThan(n1), "lessThan 2");
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313 check(p1.lessThan(n2), "lessThan 3");
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314 check(p2.lessThan(n1), "lessThan 4");
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315 check(p2.lessThan(n2), "lessThan 5");
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316 check(n1.lessThan(n2), "lessThan 6");
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317
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318 // lessThan negative tests
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319 check(!p1.lessThan(p1), "lessThan 7");
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320 check(!p2.lessThan(p2), "lessThan 8");
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321 check(!n1.lessThan(n1), "lessThan 9");
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322 check(!n2.lessThan(n2), "lessThan 10");
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323
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324 check(!p2.lessThan(p1), "lessThan 11");
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325 check(!n1.lessThan(p1), "lessThan 12");
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326 check(!n2.lessThan(p1), "lessThan 13");
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327 check(!n1.lessThan(p2), "lessThan 14");
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328 check(!n2.lessThan(p2), "lessThan 15");
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329 check(!n2.lessThan(n1), "lessThan 16");
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330
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331 // lessThanOrEqual positive tests
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332 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
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333 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
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334 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
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335 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
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336
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337 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
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338 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
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339 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
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340 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
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341 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
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342 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
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343
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344 // lessThanOrEqual negative tests
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345 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
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346 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
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347 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
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348 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
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349 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
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350 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
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351
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352 // greaterThan positive tests
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353 check(n2.greaterThan(p1), "greaterThan 1");
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354 check(n2.greaterThan(p2), "greaterThan 2");
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355 check(n2.greaterThan(n1), "greaterThan 3");
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356 check(n1.greaterThan(p1), "greaterThan 4");
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357 check(n1.greaterThan(p2), "greaterThan 5");
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358 check(p2.greaterThan(p1), "greaterThan 6");
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359
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360 // greaterThan negative tests
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361 check(!p1.greaterThan(p1), "greaterThan 7");
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362 check(!p2.greaterThan(p2), "greaterThan 8");
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363 check(!n1.greaterThan(n1), "greaterThan 9");
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364 check(!n2.greaterThan(n2), "greaterThan 10");
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365
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366 check(!p1.greaterThan(n2), "greaterThan 11");
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367 check(!p2.greaterThan(n2), "greaterThan 12");
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368 check(!n1.greaterThan(n2), "greaterThan 13");
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369 check(!p1.greaterThan(n1), "greaterThan 14");
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370 check(!p2.greaterThan(n1), "greaterThan 15");
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371 check(!p1.greaterThan(p2), "greaterThan 16");
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372
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373 // greaterThanOrEqual positive tests
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374 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
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375 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
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376 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
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377 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
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378
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379 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
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380 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
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381 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
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382 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
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383 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
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384 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
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385
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386 // greaterThanOrEqual negative tests
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387 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
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388 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
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389 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
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390 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
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391 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
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392 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
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393
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394 System.err.println("WindbgAddress: all tests passed successfully.");
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395 }
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396 }
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