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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxAddress.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | ba764ed4b6f2 |
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1 /* | |
2 * Copyright 2002 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 sun.jvm.hotspot.debugger.*; | |
28 | |
29 class LinuxAddress implements Address { | |
30 protected LinuxDebugger debugger; | |
31 protected long addr; | |
32 | |
33 LinuxAddress(LinuxDebugger debugger, long addr) { | |
34 this.debugger = debugger; | |
35 this.addr = addr; | |
36 } | |
37 | |
38 // | |
39 // Basic Java routines | |
40 // | |
41 | |
42 public boolean equals(Object arg) { | |
43 if (arg == null) { | |
44 return false; | |
45 } | |
46 | |
47 if (!(arg instanceof LinuxAddress)) { | |
48 return false; | |
49 } | |
50 | |
51 return (addr == ((LinuxAddress) arg).addr); | |
52 } | |
53 | |
54 public int hashCode() { | |
55 // FIXME: suggestions on a better hash code? | |
56 return (int) addr; | |
57 } | |
58 | |
59 public String toString() { | |
60 return debugger.addressValueToString(addr); | |
61 } | |
62 | |
63 // | |
64 // C/C++-related routines | |
65 // | |
66 | |
67 public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) | |
68 throws UnalignedAddressException, UnmappedAddressException { | |
69 return debugger.readCInteger(addr + offset, numBytes, isUnsigned); | |
70 } | |
71 | |
72 public Address getAddressAt(long offset) | |
73 throws UnalignedAddressException, UnmappedAddressException { | |
74 return debugger.readAddress(addr + offset); | |
75 } | |
76 | |
77 // | |
78 // Java-related routines | |
79 // | |
80 | |
81 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
82 return debugger.readJBoolean(addr + offset); | |
83 } | |
84 | |
85 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
86 return debugger.readJByte(addr + offset); | |
87 } | |
88 | |
89 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
90 return debugger.readJChar(addr + offset); | |
91 } | |
92 | |
93 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
94 return debugger.readJDouble(addr + offset); | |
95 } | |
96 | |
97 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
98 return debugger.readJFloat(addr + offset); | |
99 } | |
100 | |
101 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
102 return debugger.readJInt(addr + offset); | |
103 } | |
104 | |
105 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
106 return debugger.readJLong(addr + offset); | |
107 } | |
108 | |
109 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
110 return debugger.readJShort(addr + offset); | |
111 } | |
112 | |
113 public OopHandle getOopHandleAt(long offset) | |
114 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { | |
115 return debugger.readOopHandle(addr + offset); | |
116 } | |
117 | |
118 // Mutators -- not implemented for now (FIXME) | |
119 public void setCIntegerAt(long offset, long numBytes, long value) { | |
120 throw new DebuggerException("Unimplemented"); | |
121 } | |
122 public void setAddressAt(long offset, Address value) { | |
123 throw new DebuggerException("Unimplemented"); | |
124 } | |
125 public void setJBooleanAt (long offset, boolean value) | |
126 throws UnmappedAddressException, UnalignedAddressException { | |
127 throw new DebuggerException("Unimplemented"); | |
128 } | |
129 public void setJByteAt (long offset, byte value) | |
130 throws UnmappedAddressException, UnalignedAddressException { | |
131 throw new DebuggerException("Unimplemented"); | |
132 } | |
133 public void setJCharAt (long offset, char value) | |
134 throws UnmappedAddressException, UnalignedAddressException { | |
135 throw new DebuggerException("Unimplemented"); | |
136 } | |
137 public void setJDoubleAt (long offset, double value) | |
138 throws UnmappedAddressException, UnalignedAddressException { | |
139 throw new DebuggerException("Unimplemented"); | |
140 } | |
141 public void setJFloatAt (long offset, float value) | |
142 throws UnmappedAddressException, UnalignedAddressException { | |
143 throw new DebuggerException("Unimplemented"); | |
144 } | |
145 public void setJIntAt (long offset, int value) | |
146 throws UnmappedAddressException, UnalignedAddressException { | |
147 throw new DebuggerException("Unimplemented"); | |
148 } | |
149 public void setJLongAt (long offset, long value) | |
150 throws UnmappedAddressException, UnalignedAddressException { | |
151 throw new DebuggerException("Unimplemented"); | |
152 } | |
153 public void setJShortAt (long offset, short value) | |
154 throws UnmappedAddressException, UnalignedAddressException { | |
155 throw new DebuggerException("Unimplemented"); | |
156 } | |
157 public void setOopHandleAt (long offset, OopHandle value) | |
158 throws UnmappedAddressException, UnalignedAddressException { | |
159 throw new DebuggerException("Unimplemented"); | |
160 } | |
161 | |
162 // | |
163 // Arithmetic operations -- necessary evil. | |
164 // | |
165 | |
166 public Address addOffsetTo (long offset) throws UnsupportedOperationException { | |
167 long value = addr + offset; | |
168 if (value == 0) { | |
169 return null; | |
170 } | |
171 return new LinuxAddress(debugger, value); | |
172 } | |
173 | |
174 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException { | |
175 long value = addr + offset; | |
176 if (value == 0) { | |
177 return null; | |
178 } | |
179 return new LinuxOopHandle(debugger, value); | |
180 } | |
181 | |
182 /** (FIXME: any signed/unsigned issues? Should this work for | |
183 OopHandles?) */ | |
184 public long minus(Address arg) { | |
185 if (arg == null) { | |
186 return addr; | |
187 } | |
188 return addr - ((LinuxAddress) arg).addr; | |
189 } | |
190 | |
191 // Two's complement representation. | |
192 // All negative numbers are larger than positive numbers. | |
193 // Numbers with the same sign can be compared normally. | |
194 // Test harness is below in main(). | |
195 | |
196 public boolean lessThan (Address a) { | |
197 if (a == null) { | |
198 return false; | |
199 } | |
200 LinuxAddress arg = (LinuxAddress) a; | |
201 if ((addr >= 0) && (arg.addr < 0)) { | |
202 return true; | |
203 } | |
204 if ((addr < 0) && (arg.addr >= 0)) { | |
205 return false; | |
206 } | |
207 return (addr < arg.addr); | |
208 } | |
209 | |
210 public boolean lessThanOrEqual (Address a) { | |
211 if (a == null) { | |
212 return false; | |
213 } | |
214 LinuxAddress arg = (LinuxAddress) a; | |
215 if ((addr >= 0) && (arg.addr < 0)) { | |
216 return true; | |
217 } | |
218 if ((addr < 0) && (arg.addr >= 0)) { | |
219 return false; | |
220 } | |
221 return (addr <= arg.addr); | |
222 } | |
223 | |
224 public boolean greaterThan (Address a) { | |
225 if (a == null) { | |
226 return true; | |
227 } | |
228 LinuxAddress arg = (LinuxAddress) a; | |
229 if ((addr >= 0) && (arg.addr < 0)) { | |
230 return false; | |
231 } | |
232 if ((addr < 0) && (arg.addr >= 0)) { | |
233 return true; | |
234 } | |
235 return (addr > arg.addr); | |
236 } | |
237 | |
238 public boolean greaterThanOrEqual(Address a) { | |
239 if (a == null) { | |
240 return true; | |
241 } | |
242 LinuxAddress arg = (LinuxAddress) a; | |
243 if ((addr >= 0) && (arg.addr < 0)) { | |
244 return false; | |
245 } | |
246 if ((addr < 0) && (arg.addr >= 0)) { | |
247 return true; | |
248 } | |
249 return (addr >= arg.addr); | |
250 } | |
251 | |
252 public Address andWithMask(long mask) throws UnsupportedOperationException { | |
253 long value = addr & mask; | |
254 if (value == 0) { | |
255 return null; | |
256 } | |
257 return new LinuxAddress(debugger, value); | |
258 } | |
259 | |
260 public Address orWithMask(long mask) throws UnsupportedOperationException { | |
261 long value = addr | mask; | |
262 if (value == 0) { | |
263 return null; | |
264 } | |
265 return new LinuxAddress(debugger, value); | |
266 } | |
267 | |
268 public Address xorWithMask(long mask) throws UnsupportedOperationException { | |
269 long value = addr ^ mask; | |
270 if (value == 0) { | |
271 return null; | |
272 } | |
273 return new LinuxAddress(debugger, value); | |
274 } | |
275 | |
276 | |
277 //-------------------------------------------------------------------------------- | |
278 // Internals only below this point | |
279 // | |
280 | |
281 long getValue() { | |
282 return addr; | |
283 } | |
284 | |
285 | |
286 private static void check(boolean arg, String failMessage) { | |
287 if (!arg) { | |
288 System.err.println(failMessage + ": FAILED"); | |
289 System.exit(1); | |
290 } | |
291 } | |
292 | |
293 // Test harness | |
294 public static void main(String[] args) { | |
295 // p/n indicates whether the interior address is really positive | |
296 // or negative. In unsigned terms, p1 < p2 < n1 < n2. | |
297 | |
298 LinuxAddress p1 = new LinuxAddress(null, 0x7FFFFFFFFFFFFFF0L); | |
299 LinuxAddress p2 = (LinuxAddress) p1.addOffsetTo(10); | |
300 LinuxAddress n1 = (LinuxAddress) p2.addOffsetTo(10); | |
301 LinuxAddress n2 = (LinuxAddress) n1.addOffsetTo(10); | |
302 | |
303 // lessThan positive tests | |
304 check(p1.lessThan(p2), "lessThan 1"); | |
305 check(p1.lessThan(n1), "lessThan 2"); | |
306 check(p1.lessThan(n2), "lessThan 3"); | |
307 check(p2.lessThan(n1), "lessThan 4"); | |
308 check(p2.lessThan(n2), "lessThan 5"); | |
309 check(n1.lessThan(n2), "lessThan 6"); | |
310 | |
311 // lessThan negative tests | |
312 check(!p1.lessThan(p1), "lessThan 7"); | |
313 check(!p2.lessThan(p2), "lessThan 8"); | |
314 check(!n1.lessThan(n1), "lessThan 9"); | |
315 check(!n2.lessThan(n2), "lessThan 10"); | |
316 | |
317 check(!p2.lessThan(p1), "lessThan 11"); | |
318 check(!n1.lessThan(p1), "lessThan 12"); | |
319 check(!n2.lessThan(p1), "lessThan 13"); | |
320 check(!n1.lessThan(p2), "lessThan 14"); | |
321 check(!n2.lessThan(p2), "lessThan 15"); | |
322 check(!n2.lessThan(n1), "lessThan 16"); | |
323 | |
324 // lessThanOrEqual positive tests | |
325 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1"); | |
326 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2"); | |
327 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3"); | |
328 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4"); | |
329 | |
330 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5"); | |
331 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6"); | |
332 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7"); | |
333 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8"); | |
334 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9"); | |
335 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10"); | |
336 | |
337 // lessThanOrEqual negative tests | |
338 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11"); | |
339 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12"); | |
340 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13"); | |
341 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14"); | |
342 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15"); | |
343 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16"); | |
344 | |
345 // greaterThan positive tests | |
346 check(n2.greaterThan(p1), "greaterThan 1"); | |
347 check(n2.greaterThan(p2), "greaterThan 2"); | |
348 check(n2.greaterThan(n1), "greaterThan 3"); | |
349 check(n1.greaterThan(p1), "greaterThan 4"); | |
350 check(n1.greaterThan(p2), "greaterThan 5"); | |
351 check(p2.greaterThan(p1), "greaterThan 6"); | |
352 | |
353 // greaterThan negative tests | |
354 check(!p1.greaterThan(p1), "greaterThan 7"); | |
355 check(!p2.greaterThan(p2), "greaterThan 8"); | |
356 check(!n1.greaterThan(n1), "greaterThan 9"); | |
357 check(!n2.greaterThan(n2), "greaterThan 10"); | |
358 | |
359 check(!p1.greaterThan(n2), "greaterThan 11"); | |
360 check(!p2.greaterThan(n2), "greaterThan 12"); | |
361 check(!n1.greaterThan(n2), "greaterThan 13"); | |
362 check(!p1.greaterThan(n1), "greaterThan 14"); | |
363 check(!p2.greaterThan(n1), "greaterThan 15"); | |
364 check(!p1.greaterThan(p2), "greaterThan 16"); | |
365 | |
366 // greaterThanOrEqual positive tests | |
367 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1"); | |
368 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2"); | |
369 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3"); | |
370 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4"); | |
371 | |
372 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5"); | |
373 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6"); | |
374 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7"); | |
375 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8"); | |
376 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9"); | |
377 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10"); | |
378 | |
379 // greaterThanOrEqual negative tests | |
380 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11"); | |
381 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12"); | |
382 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13"); | |
383 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14"); | |
384 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15"); | |
385 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16"); | |
386 | |
387 System.err.println("LinuxAddress: all tests passed successfully."); | |
388 } | |
389 } |