Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/dummy/DummyAddress.java @ 6848:8e47bac5643a
7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by: kvn, twisti
author | roland |
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date | Tue, 09 Oct 2012 10:11:38 +0200 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.debugger.dummy; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 | |
29 /** For testing purposes */ | |
30 | |
31 class DummyAddress implements Address { | |
32 protected DummyDebugger debugger; | |
33 protected long addr; | |
34 private static final long badLong = 0xBAADBABEL; | |
35 private static final double badDouble = 1.23456; | |
36 | |
37 DummyAddress(DummyDebugger debugger, long addr) { | |
38 this.debugger = debugger; | |
39 this.addr = addr; | |
40 } | |
41 | |
42 // | |
43 // Basic Java routines | |
44 // | |
45 | |
46 public boolean equals(Object arg) { | |
47 if (arg == null) { | |
48 return false; | |
49 } | |
50 | |
51 if (!(arg instanceof DummyAddress)) { | |
52 return false; | |
53 } | |
54 | |
55 return (addr == ((DummyAddress) arg).addr); | |
56 } | |
57 | |
58 public int hashCode() { | |
59 // FIXME: suggestions on a better hash code? | |
60 return (int) addr; | |
61 } | |
62 | |
63 public String toString() { | |
64 return debugger.addressToString(this); | |
65 } | |
66 | |
67 // | |
68 // C/C++-related routines | |
69 // | |
70 | |
71 public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) throws UnalignedAddressException, UnmappedAddressException { | |
72 return badLong; | |
73 } | |
74 | |
75 public Address getAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
76 return new DummyAddress(debugger, badLong); | |
77 } | |
78 | |
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79 public Address getCompOopAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
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80 return new DummyAddress(debugger, badLong); |
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81 } |
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82 |
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83 public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException { |
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84 return new DummyAddress(debugger, badLong); |
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85 } |
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86 |
0 | 87 // |
88 // Java-related routines | |
89 // | |
90 | |
91 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
92 return false; | |
93 } | |
94 | |
95 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
96 return (byte) badLong; | |
97 } | |
98 | |
99 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
100 return (char) badLong; | |
101 } | |
102 | |
103 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
104 return badDouble; | |
105 } | |
106 | |
107 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
108 return (float) badDouble; | |
109 } | |
110 | |
111 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
112 return (int) badLong; | |
113 } | |
114 | |
115 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
116 return badLong; | |
117 } | |
118 | |
119 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
120 return (short) badLong; | |
121 } | |
122 | |
123 public OopHandle getOopHandleAt(long offset) | |
124 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { | |
125 return new DummyOopHandle(debugger, badLong); | |
126 } | |
113
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127 public OopHandle getCompOopHandleAt(long offset) |
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128 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { |
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129 return new DummyOopHandle(debugger, badLong); |
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130 } |
0 | 131 |
132 // Mutators -- not implemented | |
133 public void setCIntegerAt(long offset, long numBytes, long value) { | |
134 throw new DebuggerException("Unimplemented"); | |
135 } | |
136 public void setAddressAt(long offset, Address value) { | |
137 throw new DebuggerException("Unimplemented"); | |
138 } | |
139 public void setJBooleanAt (long offset, boolean value) | |
140 throws UnmappedAddressException, UnalignedAddressException { | |
141 throw new DebuggerException("Unimplemented"); | |
142 } | |
143 public void setJByteAt (long offset, byte value) | |
144 throws UnmappedAddressException, UnalignedAddressException { | |
145 throw new DebuggerException("Unimplemented"); | |
146 } | |
147 public void setJCharAt (long offset, char value) | |
148 throws UnmappedAddressException, UnalignedAddressException { | |
149 throw new DebuggerException("Unimplemented"); | |
150 } | |
151 public void setJDoubleAt (long offset, double value) | |
152 throws UnmappedAddressException, UnalignedAddressException { | |
153 throw new DebuggerException("Unimplemented"); | |
154 } | |
155 public void setJFloatAt (long offset, float value) | |
156 throws UnmappedAddressException, UnalignedAddressException { | |
157 throw new DebuggerException("Unimplemented"); | |
158 } | |
159 public void setJIntAt (long offset, int value) | |
160 throws UnmappedAddressException, UnalignedAddressException { | |
161 throw new DebuggerException("Unimplemented"); | |
162 } | |
163 public void setJLongAt (long offset, long value) | |
164 throws UnmappedAddressException, UnalignedAddressException { | |
165 throw new DebuggerException("Unimplemented"); | |
166 } | |
167 public void setJShortAt (long offset, short value) | |
168 throws UnmappedAddressException, UnalignedAddressException { | |
169 throw new DebuggerException("Unimplemented"); | |
170 } | |
171 public void setOopHandleAt (long offset, OopHandle value) | |
172 throws UnmappedAddressException, UnalignedAddressException { | |
173 throw new DebuggerException("Unimplemented"); | |
174 } | |
175 | |
176 // | |
177 // Arithmetic operations -- necessary evil. | |
178 // | |
179 | |
180 public Address addOffsetTo (long offset) throws UnsupportedOperationException { | |
181 long value = addr + offset; | |
182 if (value == 0) { | |
183 return null; | |
184 } | |
185 return new DummyAddress(debugger, value); | |
186 } | |
187 | |
188 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException { | |
189 long value = addr + offset; | |
190 if (value == 0) { | |
191 return null; | |
192 } | |
193 return new DummyOopHandle(debugger, value); | |
194 } | |
195 | |
196 /** (FIXME: any signed/unsigned issues? Should this work for | |
197 OopHandles?) */ | |
198 public long minus(Address arg) { | |
199 if (arg == null) { | |
200 return addr; | |
201 } | |
202 return addr - ((DummyAddress) arg).addr; | |
203 } | |
204 | |
205 // Two's complement representation. | |
206 // All negative numbers are larger than positive numbers. | |
207 // Numbers with the same sign can be compared normally. | |
208 // Test harness is below in main(). | |
209 | |
210 public boolean lessThan (Address arg) { | |
211 DummyAddress DummyArg = (DummyAddress) arg; | |
212 if ((addr >= 0) && (DummyArg.addr < 0)) { | |
213 return true; | |
214 } | |
215 if ((addr < 0) && (DummyArg.addr >= 0)) { | |
216 return false; | |
217 } | |
218 return (addr < DummyArg.addr); | |
219 } | |
220 | |
221 public boolean lessThanOrEqual (Address arg) { | |
222 DummyAddress DummyArg = (DummyAddress) arg; | |
223 if ((addr >= 0) && (DummyArg.addr < 0)) { | |
224 return true; | |
225 } | |
226 if ((addr < 0) && (DummyArg.addr >= 0)) { | |
227 return false; | |
228 } | |
229 return (addr <= DummyArg.addr); | |
230 } | |
231 | |
232 public boolean greaterThan (Address arg) { | |
233 DummyAddress DummyArg = (DummyAddress) arg; | |
234 if ((addr >= 0) && (DummyArg.addr < 0)) { | |
235 return false; | |
236 } | |
237 if ((addr < 0) && (DummyArg.addr >= 0)) { | |
238 return true; | |
239 } | |
240 return (addr > DummyArg.addr); | |
241 } | |
242 | |
243 public boolean greaterThanOrEqual(Address arg) { | |
244 DummyAddress DummyArg = (DummyAddress) arg; | |
245 if ((addr >= 0) && (DummyArg.addr < 0)) { | |
246 return false; | |
247 } | |
248 if ((addr < 0) && (DummyArg.addr >= 0)) { | |
249 return true; | |
250 } | |
251 return (addr >= DummyArg.addr); | |
252 } | |
253 | |
254 public Address andWithMask(long mask) throws UnsupportedOperationException { | |
255 long value = addr & mask; | |
256 if (value == 0) { | |
257 return null; | |
258 } | |
259 return new DummyAddress(debugger, value); | |
260 } | |
261 | |
262 public Address orWithMask(long mask) throws UnsupportedOperationException { | |
263 long value = addr | mask; | |
264 if (value == 0) { | |
265 return null; | |
266 } | |
267 return new DummyAddress(debugger, value); | |
268 } | |
269 | |
270 public Address xorWithMask(long mask) throws UnsupportedOperationException { | |
271 long value = addr ^ mask; | |
272 if (value == 0) { | |
273 return null; | |
274 } | |
275 return new DummyAddress(debugger, value); | |
276 } | |
277 | |
278 //-------------------------------------------------------------------------------- | |
279 // Internals only below this point | |
280 // | |
281 | |
282 long getValue() { | |
283 return addr; | |
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 DummyAddress p1 = new DummyAddress(null, 0x7FFFFFFFFFFFFFF0L); | |
299 DummyAddress p2 = (DummyAddress) p1.addOffsetTo(10); | |
300 DummyAddress n1 = (DummyAddress) p2.addOffsetTo(10); | |
301 DummyAddress n2 = (DummyAddress) 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("DummyAddress: all tests passed successfully."); | |
388 } | |
389 } |