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