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.remote;
26
27 import sun.jvm.hotspot.debugger.*;
28
29 class RemoteAddress implements Address {
30 protected RemoteDebuggerClient debugger;
31 protected long addr;
32
33 RemoteAddress(RemoteDebuggerClient 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 RemoteAddress)) {
48 return false;
49 }
50
51 return (addr == ((RemoteAddress) 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 public Address getCompOopAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
75 return debugger.readCompOopAddress(addr + offset);
76 }
77 public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
78 return debugger.readCompKlassAddress(addr + offset);
79 }
80
81 //
82 // Java-related routines
83 //
84
85 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
86 return debugger.readJBoolean(addr + offset);
87 }
88
89 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
90 return debugger.readJByte(addr + offset);
91 }
92
93 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
94 return debugger.readJChar(addr + offset);
95 }
96
97 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
98 return debugger.readJDouble(addr + offset);
99 }
100
101 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
102 return debugger.readJFloat(addr + offset);
103 }
104
105 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
106 return debugger.readJInt(addr + offset);
107 }
108
109 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
110 return debugger.readJLong(addr + offset);
111 }
112
113 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
114 return debugger.readJShort(addr + offset);
115 }
116
117 public OopHandle getOopHandleAt(long offset)
118 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
119 return debugger.readOopHandle(addr + offset);
120 }
121 public OopHandle getCompOopHandleAt(long offset)
122 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
123 return debugger.readCompOopHandle(addr + offset);
124 }
125
126 // Mutators -- not implemented for now (FIXME)
127 public void setCIntegerAt(long offset, long numBytes, long value) {
128 throw new DebuggerException("Unimplemented");
129 }
130 public void setAddressAt(long offset, Address value) {
131 throw new DebuggerException("Unimplemented");
132 }
133 public void setJBooleanAt (long offset, boolean value)
134 throws UnmappedAddressException, UnalignedAddressException {
135 throw new DebuggerException("Unimplemented");
136 }
137 public void setJByteAt (long offset, byte value)
138 throws UnmappedAddressException, UnalignedAddressException {
139 throw new DebuggerException("Unimplemented");
140 }
141 public void setJCharAt (long offset, char value)
142 throws UnmappedAddressException, UnalignedAddressException {
143 throw new DebuggerException("Unimplemented");
144 }
145 public void setJDoubleAt (long offset, double value)
146 throws UnmappedAddressException, UnalignedAddressException {
147 throw new DebuggerException("Unimplemented");
148 }
149 public void setJFloatAt (long offset, float value)
150 throws UnmappedAddressException, UnalignedAddressException {
151 throw new DebuggerException("Unimplemented");
152 }
153 public void setJIntAt (long offset, int value)
154 throws UnmappedAddressException, UnalignedAddressException {
155 throw new DebuggerException("Unimplemented");
156 }
157 public void setJLongAt (long offset, long value)
158 throws UnmappedAddressException, UnalignedAddressException {
159 throw new DebuggerException("Unimplemented");
160 }
161 public void setJShortAt (long offset, short value)
162 throws UnmappedAddressException, UnalignedAddressException {
163 throw new DebuggerException("Unimplemented");
164 }
165 public void setOopHandleAt (long offset, OopHandle value)
166 throws UnmappedAddressException, UnalignedAddressException {
167 throw new DebuggerException("Unimplemented");
168 }
169
170 //
171 // Arithmetic operations -- necessary evil.
172 //
173
174 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
175 long value = addr + offset;
176 if (value == 0) {
177 return null;
178 }
179 return new RemoteAddress(debugger, value);
180 }
181
182 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
183 long value = addr + offset;
184 if (value == 0) {
185 return null;
186 }
187 return new RemoteOopHandle(debugger, value);
188 }
189
190 /** (FIXME: any signed/unsigned issues? Should this work for
191 OopHandles?) */
192 public long minus(Address arg) {
193 if (arg == null) {
194 return addr;
195 }
196 return addr - ((RemoteAddress) arg).addr;
197 }
198
199 // Two's complement representation.
200 // All negative numbers are larger than positive numbers.
201 // Numbers with the same sign can be compared normally.
202 // Test harness is below in main().
203
204 public boolean lessThan (Address arg) {
205 if (arg == null) {
206 return false;
207 }
208 RemoteAddress remoteArg = (RemoteAddress) arg;
209 if ((addr >= 0) && (remoteArg.addr < 0)) {
210 return true;
211 }
212 if ((addr < 0) && (remoteArg.addr >= 0)) {
213 return false;
214 }
215 return (addr < remoteArg.addr);
216 }
217
218 public boolean lessThanOrEqual (Address arg) {
219 if (arg == null) {
220 return false;
221 }
222 RemoteAddress remoteArg = (RemoteAddress) arg;
223 if ((addr >= 0) && (remoteArg.addr < 0)) {
224 return true;
225 }
226 if ((addr < 0) && (remoteArg.addr >= 0)) {
227 return false;
228 }
229 return (addr <= remoteArg.addr);
230 }
231
232 public boolean greaterThan (Address arg) {
233 if (arg == null) {
234 return true;
235 }
236 RemoteAddress remoteArg = (RemoteAddress) arg;
237 if ((addr >= 0) && (remoteArg.addr < 0)) {
238 return false;
239 }
240 if ((addr < 0) && (remoteArg.addr >= 0)) {
241 return true;
242 }
243 return (addr > remoteArg.addr);
244 }
245
246 public boolean greaterThanOrEqual(Address arg) {
247 if (arg == null) {
248 return true;
249 }
250 RemoteAddress remoteArg = (RemoteAddress) arg;
251 if ((addr >= 0) && (remoteArg.addr < 0)) {
252 return false;
253 }
254 if ((addr < 0) && (remoteArg.addr >= 0)) {
255 return true;
256 }
257 return (addr >= remoteArg.addr);
258 }
259
260 public Address andWithMask(long mask) throws UnsupportedOperationException {
261 long value = addr & mask;
262 if (value == 0) {
263 return null;
264 }
265 return new RemoteAddress(debugger, value);
266 }
267
268 public Address orWithMask(long mask) throws UnsupportedOperationException {
269 long value = addr | mask;
270 if (value == 0) {
271 return null;
272 }
273 return new RemoteAddress(debugger, value);
274 }
275
276 public Address xorWithMask(long mask) throws UnsupportedOperationException {
277 long value = addr ^ mask;
278 if (value == 0) {
279 return null;
280 }
281 return new RemoteAddress(debugger, value);
282 }
283
284 public long asLongValue() { return addr; }
285 //--------------------------------------------------------------------------------
286 // Internals only below this point
287 //
288
289 long getValue() {
290 return addr;
291 }
292
293
294 private static void check(boolean arg, String failMessage) {
295 if (!arg) {
296 System.err.println(failMessage + ": FAILED");
297 System.exit(1);
298 }
299 }
300
301 // Test harness
302 public static void main(String[] args) {
303 // p/n indicates whether the interior address is really positive
304 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
305
306 RemoteAddress p1 = new RemoteAddress(null, 0x7FFFFFFFFFFFFFF0L);
307 RemoteAddress p2 = (RemoteAddress) p1.addOffsetTo(10);
308 RemoteAddress n1 = (RemoteAddress) p2.addOffsetTo(10);
309 RemoteAddress n2 = (RemoteAddress) n1.addOffsetTo(10);
310
311 // lessThan positive tests
312 check(p1.lessThan(p2), "lessThan 1");
313 check(p1.lessThan(n1), "lessThan 2");
314 check(p1.lessThan(n2), "lessThan 3");
315 check(p2.lessThan(n1), "lessThan 4");
316 check(p2.lessThan(n2), "lessThan 5");
317 check(n1.lessThan(n2), "lessThan 6");
318
319 // lessThan negative tests
320 check(!p1.lessThan(p1), "lessThan 7");
321 check(!p2.lessThan(p2), "lessThan 8");
322 check(!n1.lessThan(n1), "lessThan 9");
323 check(!n2.lessThan(n2), "lessThan 10");
324
325 check(!p2.lessThan(p1), "lessThan 11");
326 check(!n1.lessThan(p1), "lessThan 12");
327 check(!n2.lessThan(p1), "lessThan 13");
328 check(!n1.lessThan(p2), "lessThan 14");
329 check(!n2.lessThan(p2), "lessThan 15");
330 check(!n2.lessThan(n1), "lessThan 16");
331
332 // lessThanOrEqual positive tests
333 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
334 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
335 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
336 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
337
338 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
339 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
340 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
341 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
342 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
343 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
344
345 // lessThanOrEqual negative tests
346 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
347 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
348 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
349 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
350 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
351 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
352
353 // greaterThan positive tests
354 check(n2.greaterThan(p1), "greaterThan 1");
355 check(n2.greaterThan(p2), "greaterThan 2");
356 check(n2.greaterThan(n1), "greaterThan 3");
357 check(n1.greaterThan(p1), "greaterThan 4");
358 check(n1.greaterThan(p2), "greaterThan 5");
359 check(p2.greaterThan(p1), "greaterThan 6");
360
361 // greaterThan negative tests
362 check(!p1.greaterThan(p1), "greaterThan 7");
363 check(!p2.greaterThan(p2), "greaterThan 8");
364 check(!n1.greaterThan(n1), "greaterThan 9");
365 check(!n2.greaterThan(n2), "greaterThan 10");
366
367 check(!p1.greaterThan(n2), "greaterThan 11");
368 check(!p2.greaterThan(n2), "greaterThan 12");
369 check(!n1.greaterThan(n2), "greaterThan 13");
370 check(!p1.greaterThan(n1), "greaterThan 14");
371 check(!p2.greaterThan(n1), "greaterThan 15");
372 check(!p1.greaterThan(p2), "greaterThan 16");
373
374 // greaterThanOrEqual positive tests
375 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
376 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
377 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
378 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
379
380 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
381 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
382 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
383 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
384 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
385 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
386
387 // greaterThanOrEqual negative tests
388 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
389 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
390 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
391 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
392 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
393 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
394
395 System.err.println("RemoteAddress: all tests passed successfully.");
396 }
397 }