1 /*
2 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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
79 public Address getCompOopAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
80 return new DummyAddress(debugger, badLong);
81 }
82
83 public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
84 return new DummyAddress(debugger, badLong);
85 }
86
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 }
127 public OopHandle getCompOopHandleAt(long offset)
128 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
129 return new DummyOopHandle(debugger, badLong);
130 }
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 }