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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.proc;
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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 ProcAddress implements Address {
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30 protected ProcDebugger debugger;
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31 protected long addr;
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32
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33 ProcAddress(ProcDebugger 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 ProcAddress)) {
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48 return false;
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49 }
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50
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51 return (addr == ((ProcAddress) 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 // Mutators -- not implemented for now (FIXME)
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117 public void setCIntegerAt(long offset, long numBytes, long value) {
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118 throw new DebuggerException("Unimplemented");
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119 }
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120 public void setAddressAt(long offset, Address value) {
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121 throw new DebuggerException("Unimplemented");
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122 }
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123 public void setJBooleanAt (long offset, boolean value)
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124 throws UnmappedAddressException, UnalignedAddressException {
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125 throw new DebuggerException("Unimplemented");
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126 }
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127 public void setJByteAt (long offset, byte value)
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128 throws UnmappedAddressException, UnalignedAddressException {
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129 throw new DebuggerException("Unimplemented");
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130 }
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131 public void setJCharAt (long offset, char value)
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132 throws UnmappedAddressException, UnalignedAddressException {
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133 throw new DebuggerException("Unimplemented");
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134 }
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135 public void setJDoubleAt (long offset, double value)
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136 throws UnmappedAddressException, UnalignedAddressException {
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137 throw new DebuggerException("Unimplemented");
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138 }
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139 public void setJFloatAt (long offset, float value)
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140 throws UnmappedAddressException, UnalignedAddressException {
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141 throw new DebuggerException("Unimplemented");
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142 }
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143 public void setJIntAt (long offset, int value)
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144 throws UnmappedAddressException, UnalignedAddressException {
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145 throw new DebuggerException("Unimplemented");
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146 }
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147 public void setJLongAt (long offset, long value)
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148 throws UnmappedAddressException, UnalignedAddressException {
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149 throw new DebuggerException("Unimplemented");
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150 }
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151 public void setJShortAt (long offset, short value)
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152 throws UnmappedAddressException, UnalignedAddressException {
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153 throw new DebuggerException("Unimplemented");
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154 }
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155 public void setOopHandleAt (long offset, OopHandle value)
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156 throws UnmappedAddressException, UnalignedAddressException {
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157 throw new DebuggerException("Unimplemented");
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158 }
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159
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160 //
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161 // Arithmetic operations -- necessary evil.
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162 //
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163
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164 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
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165 long value = addr + offset;
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166 if (value == 0) {
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167 return null;
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168 }
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169 return new ProcAddress(debugger, value);
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170 }
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171
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172 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
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173 long value = addr + offset;
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174 if (value == 0) {
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175 return null;
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176 }
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177 return new ProcOopHandle(debugger, value);
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178 }
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179
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180 /** (FIXME: any signed/unsigned issues? Should this work for
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181 OopHandles?) */
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182 public long minus(Address arg) {
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183 if (arg == null) {
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184 return addr;
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185 }
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186 return addr - ((ProcAddress) arg).addr;
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187 }
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188
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189 // Two's complement representation.
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190 // All negative numbers are larger than positive numbers.
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191 // Numbers with the same sign can be compared normally.
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192 // Test harness is below in main().
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193
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194 public boolean lessThan (Address arg) {
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195 if (arg == null) {
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196 return false;
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197 }
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198 ProcAddress dbxArg = (ProcAddress) arg;
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199 if ((addr >= 0) && (dbxArg.addr < 0)) {
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200 return true;
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201 }
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202 if ((addr < 0) && (dbxArg.addr >= 0)) {
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203 return false;
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204 }
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205 return (addr < dbxArg.addr);
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206 }
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207
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208 public boolean lessThanOrEqual (Address arg) {
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209 if (arg == null) {
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210 return false;
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211 }
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212 ProcAddress dbxArg = (ProcAddress) arg;
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213 if ((addr >= 0) && (dbxArg.addr < 0)) {
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214 return true;
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215 }
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216 if ((addr < 0) && (dbxArg.addr >= 0)) {
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217 return false;
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218 }
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219 return (addr <= dbxArg.addr);
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220 }
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221
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222 public boolean greaterThan (Address arg) {
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223 if (arg == null) {
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224 return true;
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225 }
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226 ProcAddress dbxArg = (ProcAddress) arg;
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227 if ((addr >= 0) && (dbxArg.addr < 0)) {
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228 return false;
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229 }
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230 if ((addr < 0) && (dbxArg.addr >= 0)) {
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231 return true;
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232 }
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233 return (addr > dbxArg.addr);
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234 }
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235
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236 public boolean greaterThanOrEqual(Address arg) {
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237 if (arg == null) {
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238 return true;
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239 }
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240 ProcAddress dbxArg = (ProcAddress) arg;
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241 if ((addr >= 0) && (dbxArg.addr < 0)) {
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242 return false;
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243 }
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244 if ((addr < 0) && (dbxArg.addr >= 0)) {
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245 return true;
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246 }
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247 return (addr >= dbxArg.addr);
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248 }
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249
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250 public Address andWithMask(long mask) throws UnsupportedOperationException {
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251 long value = addr & mask;
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252 if (value == 0) {
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253 return null;
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254 }
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255 return new ProcAddress(debugger, value);
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256 }
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257
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258 public Address orWithMask(long mask) throws UnsupportedOperationException {
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259 long value = addr | mask;
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260 if (value == 0) {
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261 return null;
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262 }
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263 return new ProcAddress(debugger, value);
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264 }
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265
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266 public Address xorWithMask(long mask) throws UnsupportedOperationException {
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267 long value = addr ^ mask;
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268 if (value == 0) {
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269 return null;
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270 }
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271 return new ProcAddress(debugger, value);
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272 }
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273
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274
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275 //--------------------------------------------------------------------------------
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276 // Internals only below this point
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277 //
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278
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279 long getValue() {
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280 return addr;
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281 }
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282
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283
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284 private static void check(boolean arg, String failMessage) {
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285 if (!arg) {
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286 System.err.println(failMessage + ": FAILED");
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287 System.exit(1);
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288 }
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289 }
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290
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291 // Test harness
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292 public static void main(String[] args) {
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293 // p/n indicates whether the interior address is really positive
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294 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
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295
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296 ProcAddress p1 = new ProcAddress(null, 0x7FFFFFFFFFFFFFF0L);
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297 ProcAddress p2 = (ProcAddress) p1.addOffsetTo(10);
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298 ProcAddress n1 = (ProcAddress) p2.addOffsetTo(10);
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299 ProcAddress n2 = (ProcAddress) n1.addOffsetTo(10);
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300
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301 // lessThan positive tests
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302 check(p1.lessThan(p2), "lessThan 1");
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303 check(p1.lessThan(n1), "lessThan 2");
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304 check(p1.lessThan(n2), "lessThan 3");
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305 check(p2.lessThan(n1), "lessThan 4");
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306 check(p2.lessThan(n2), "lessThan 5");
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307 check(n1.lessThan(n2), "lessThan 6");
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308
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309 // lessThan negative tests
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310 check(!p1.lessThan(p1), "lessThan 7");
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311 check(!p2.lessThan(p2), "lessThan 8");
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312 check(!n1.lessThan(n1), "lessThan 9");
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313 check(!n2.lessThan(n2), "lessThan 10");
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314
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315 check(!p2.lessThan(p1), "lessThan 11");
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316 check(!n1.lessThan(p1), "lessThan 12");
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317 check(!n2.lessThan(p1), "lessThan 13");
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318 check(!n1.lessThan(p2), "lessThan 14");
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319 check(!n2.lessThan(p2), "lessThan 15");
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320 check(!n2.lessThan(n1), "lessThan 16");
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321
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322 // lessThanOrEqual positive tests
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323 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
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324 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
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325 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
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326 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
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327
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328 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
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329 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
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330 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
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331 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
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332 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
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333 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
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334
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335 // lessThanOrEqual negative tests
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336 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
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337 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
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338 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
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339 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
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340 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
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341 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
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342
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343 // greaterThan positive tests
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344 check(n2.greaterThan(p1), "greaterThan 1");
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345 check(n2.greaterThan(p2), "greaterThan 2");
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346 check(n2.greaterThan(n1), "greaterThan 3");
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347 check(n1.greaterThan(p1), "greaterThan 4");
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348 check(n1.greaterThan(p2), "greaterThan 5");
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349 check(p2.greaterThan(p1), "greaterThan 6");
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350
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351 // greaterThan negative tests
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352 check(!p1.greaterThan(p1), "greaterThan 7");
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353 check(!p2.greaterThan(p2), "greaterThan 8");
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354 check(!n1.greaterThan(n1), "greaterThan 9");
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355 check(!n2.greaterThan(n2), "greaterThan 10");
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356
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357 check(!p1.greaterThan(n2), "greaterThan 11");
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358 check(!p2.greaterThan(n2), "greaterThan 12");
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359 check(!n1.greaterThan(n2), "greaterThan 13");
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360 check(!p1.greaterThan(n1), "greaterThan 14");
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361 check(!p2.greaterThan(n1), "greaterThan 15");
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362 check(!p1.greaterThan(p2), "greaterThan 16");
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363
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364 // greaterThanOrEqual positive tests
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365 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
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366 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
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367 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
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368 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
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369
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370 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
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371 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
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372 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
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373 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
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374 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
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375 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
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376
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377 // greaterThanOrEqual negative tests
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378 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
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379 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
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380 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
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381 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
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382 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
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383 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
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384
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385 System.err.println("ProcAddress: all tests passed successfully.");
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386 }
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387 }
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