1 /*
2 * Copyright (c) 2002, 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.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 public Address getCompOopAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
76 return debugger.readCompOopAddress(addr + offset);
77 }
78
79 public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
80 return debugger.readCompKlassAddress(addr + offset);
81 }
82
83 //
84 // Java-related routines
85 //
86
87 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
88 return debugger.readJBoolean(addr + offset);
89 }
90
91 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
92 return debugger.readJByte(addr + offset);
93 }
94
95 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
96 return debugger.readJChar(addr + offset);
97 }
98
99 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
100 return debugger.readJDouble(addr + offset);
101 }
102
103 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
104 return debugger.readJFloat(addr + offset);
105 }
106
107 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
108 return debugger.readJInt(addr + offset);
109 }
110
111 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
112 return debugger.readJLong(addr + offset);
113 }
114
115 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
116 return debugger.readJShort(addr + offset);
117 }
118
119 public OopHandle getOopHandleAt(long offset)
120 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
121 return debugger.readOopHandle(addr + offset);
122 }
123
124 public OopHandle getCompOopHandleAt(long offset)
125 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
126 return debugger.readCompOopHandle(addr + offset);
127 }
128 //
129 // C/C++-related mutators
130 //
131
132 public void setCIntegerAt(long offset, long numBytes, long value) {
133 throw new DebuggerException("Unimplemented");
134 }
135 public void setAddressAt(long offset, Address value) {
136 throw new DebuggerException("Unimplemented");
137 }
138
139 //
140 // Java-related mutators
141 //
142
143 // Mutators -- not implemented for now (FIXME)
144 public void setJBooleanAt (long offset, boolean value)
145 throws UnmappedAddressException, UnalignedAddressException {
146 throw new DebuggerException("Unimplemented");
147 }
148 public void setJByteAt (long offset, byte value)
149 throws UnmappedAddressException, UnalignedAddressException {
150 throw new DebuggerException("Unimplemented");
151 }
152 public void setJCharAt (long offset, char value)
153 throws UnmappedAddressException, UnalignedAddressException {
154 throw new DebuggerException("Unimplemented");
155 }
156 public void setJDoubleAt (long offset, double value)
157 throws UnmappedAddressException, UnalignedAddressException {
158 throw new DebuggerException("Unimplemented");
159 }
160 public void setJFloatAt (long offset, float value)
161 throws UnmappedAddressException, UnalignedAddressException {
162 throw new DebuggerException("Unimplemented");
163 }
164 public void setJIntAt (long offset, int value)
165 throws UnmappedAddressException, UnalignedAddressException {
166 throw new DebuggerException("Unimplemented");
167 }
168 public void setJLongAt (long offset, long value)
169 throws UnmappedAddressException, UnalignedAddressException {
170 throw new DebuggerException("Unimplemented");
171 }
172 public void setJShortAt (long offset, short value)
173 throws UnmappedAddressException, UnalignedAddressException {
174 throw new DebuggerException("Unimplemented");
175 }
176 public void setOopHandleAt (long offset, OopHandle value)
177 throws UnmappedAddressException, UnalignedAddressException {
178 throw new DebuggerException("Unimplemented");
179 }
180
181 //
182 // Arithmetic operations -- necessary evil.
183 //
184
185 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
186 long value = addr + offset;
187 if (value == 0) {
188 return null;
189 }
190 return new WindbgAddress(debugger, value);
191 }
192
193 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
194 long value = addr + offset;
195 if (value == 0) {
196 return null;
197 }
198 return new WindbgOopHandle(debugger, value);
199 }
200
201 /** (FIXME: any signed/unsigned issues? Should this work for
202 OopHandles?) */
203 public long minus(Address arg) {
204 if (arg == null) {
205 return addr;
206 }
207 return addr - ((WindbgAddress) arg).addr;
208 }
209
210 // Two's complement representation.
211 // All negative numbers are larger than positive numbers.
212 // Numbers with the same sign can be compared normally.
213 // Test harness is below in main().
214
215 public boolean lessThan (Address a) {
216 if (a == null) {
217 return false;
218 }
219 WindbgAddress arg = (WindbgAddress) a;
220 if ((addr >= 0) && (arg.addr < 0)) {
221 return true;
222 }
223 if ((addr < 0) && (arg.addr >= 0)) {
224 return false;
225 }
226 return (addr < arg.addr);
227 }
228
229 public boolean lessThanOrEqual (Address a) {
230 if (a == null) {
231 return false;
232 }
233 WindbgAddress arg = (WindbgAddress) a;
234 if ((addr >= 0) && (arg.addr < 0)) {
235 return true;
236 }
237 if ((addr < 0) && (arg.addr >= 0)) {
238 return false;
239 }
240 return (addr <= arg.addr);
241 }
242
243 public boolean greaterThan (Address a) {
244 if (a == null) {
245 return true;
246 }
247 WindbgAddress arg = (WindbgAddress) a;
248 if ((addr >= 0) && (arg.addr < 0)) {
249 return false;
250 }
251 if ((addr < 0) && (arg.addr >= 0)) {
252 return true;
253 }
254 return (addr > arg.addr);
255 }
256
257 public boolean greaterThanOrEqual(Address a) {
258 if (a == null) {
259 return true;
260 }
261 WindbgAddress arg = (WindbgAddress) a;
262 if ((addr >= 0) && (arg.addr < 0)) {
263 return false;
264 }
265 if ((addr < 0) && (arg.addr >= 0)) {
266 return true;
267 }
268 return (addr >= arg.addr);
269 }
270
271 public Address andWithMask(long mask) throws UnsupportedOperationException {
272 long value = addr & mask;
273 if (value == 0) {
274 return null;
275 }
276 return new WindbgAddress(debugger, value);
277 }
278
279 public Address orWithMask(long mask) throws UnsupportedOperationException {
280 long value = addr | mask;
281 if (value == 0) {
282 return null;
283 }
284 return new WindbgAddress(debugger, value);
285 }
286
287 public Address xorWithMask(long mask) throws UnsupportedOperationException {
288 long value = addr ^ mask;
289 if (value == 0) {
290 return null;
291 }
292 return new WindbgAddress(debugger, value);
293 }
294
295
296 //--------------------------------------------------------------------------------
297 // Internals only below this point
298 //
299
300 long getValue() {
301 return addr;
302 }
303
304
305 private static void check(boolean arg, String failMessage) {
306 if (!arg) {
307 System.err.println(failMessage + ": FAILED");
308 System.exit(1);
309 }
310 }
311
312 // Test harness
313 public static void main(String[] args) {
314 // p/n indicates whether the interior address is really positive
315 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
316
317 WindbgAddress p1 = new WindbgAddress(null, 0x7FFFFFFFFFFFFFF0L);
318 WindbgAddress p2 = (WindbgAddress) p1.addOffsetTo(10);
319 WindbgAddress n1 = (WindbgAddress) p2.addOffsetTo(10);
320 WindbgAddress n2 = (WindbgAddress) n1.addOffsetTo(10);
321
322 // lessThan positive tests
323 check(p1.lessThan(p2), "lessThan 1");
324 check(p1.lessThan(n1), "lessThan 2");
325 check(p1.lessThan(n2), "lessThan 3");
326 check(p2.lessThan(n1), "lessThan 4");
327 check(p2.lessThan(n2), "lessThan 5");
328 check(n1.lessThan(n2), "lessThan 6");
329
330 // lessThan negative tests
331 check(!p1.lessThan(p1), "lessThan 7");
332 check(!p2.lessThan(p2), "lessThan 8");
333 check(!n1.lessThan(n1), "lessThan 9");
334 check(!n2.lessThan(n2), "lessThan 10");
335
336 check(!p2.lessThan(p1), "lessThan 11");
337 check(!n1.lessThan(p1), "lessThan 12");
338 check(!n2.lessThan(p1), "lessThan 13");
339 check(!n1.lessThan(p2), "lessThan 14");
340 check(!n2.lessThan(p2), "lessThan 15");
341 check(!n2.lessThan(n1), "lessThan 16");
342
343 // lessThanOrEqual positive tests
344 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
345 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
346 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
347 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
348
349 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
350 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
351 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
352 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
353 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
354 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
355
356 // lessThanOrEqual negative tests
357 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
358 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
359 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
360 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
361 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
362 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
363
364 // greaterThan positive tests
365 check(n2.greaterThan(p1), "greaterThan 1");
366 check(n2.greaterThan(p2), "greaterThan 2");
367 check(n2.greaterThan(n1), "greaterThan 3");
368 check(n1.greaterThan(p1), "greaterThan 4");
369 check(n1.greaterThan(p2), "greaterThan 5");
370 check(p2.greaterThan(p1), "greaterThan 6");
371
372 // greaterThan negative tests
373 check(!p1.greaterThan(p1), "greaterThan 7");
374 check(!p2.greaterThan(p2), "greaterThan 8");
375 check(!n1.greaterThan(n1), "greaterThan 9");
376 check(!n2.greaterThan(n2), "greaterThan 10");
377
378 check(!p1.greaterThan(n2), "greaterThan 11");
379 check(!p2.greaterThan(n2), "greaterThan 12");
380 check(!n1.greaterThan(n2), "greaterThan 13");
381 check(!p1.greaterThan(n1), "greaterThan 14");
382 check(!p2.greaterThan(n1), "greaterThan 15");
383 check(!p1.greaterThan(p2), "greaterThan 16");
384
385 // greaterThanOrEqual positive tests
386 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
387 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
388 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
389 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
390
391 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
392 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
393 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
394 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
395 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
396 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
397
398 // greaterThanOrEqual negative tests
399 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
400 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
401 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
402 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
403 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
404 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
405
406 System.err.println("WindbgAddress: all tests passed successfully.");
407 }
408 }