1 /*
2 * Copyright 2000-2002 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.dbx;
26
27 import sun.jvm.hotspot.debugger.*;
28
29 class DbxAddress implements Address {
30 protected DbxDebugger debugger;
31 protected long addr;
32
33 DbxAddress(DbxDebugger 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 DbxAddress)) {
48 return false;
49 }
50
51 return (addr == ((DbxAddress) 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 // Mutators -- not implemented for now (FIXME)
117 public void setCIntegerAt(long offset, long numBytes, long value) {
118 throw new DebuggerException("Unimplemented");
119 }
120 public void setAddressAt(long offset, Address value) {
121 throw new DebuggerException("Unimplemented");
122 }
123 public void setJBooleanAt (long offset, boolean value)
124 throws UnmappedAddressException, UnalignedAddressException {
125 throw new DebuggerException("Unimplemented");
126 }
127 public void setJByteAt (long offset, byte value)
128 throws UnmappedAddressException, UnalignedAddressException {
129 throw new DebuggerException("Unimplemented");
130 }
131 public void setJCharAt (long offset, char value)
132 throws UnmappedAddressException, UnalignedAddressException {
133 throw new DebuggerException("Unimplemented");
134 }
135 public void setJDoubleAt (long offset, double value)
136 throws UnmappedAddressException, UnalignedAddressException {
137 throw new DebuggerException("Unimplemented");
138 }
139 public void setJFloatAt (long offset, float value)
140 throws UnmappedAddressException, UnalignedAddressException {
141 throw new DebuggerException("Unimplemented");
142 }
143 public void setJIntAt (long offset, int value)
144 throws UnmappedAddressException, UnalignedAddressException {
145 throw new DebuggerException("Unimplemented");
146 }
147 public void setJLongAt (long offset, long value)
148 throws UnmappedAddressException, UnalignedAddressException {
149 throw new DebuggerException("Unimplemented");
150 }
151 public void setJShortAt (long offset, short value)
152 throws UnmappedAddressException, UnalignedAddressException {
153 throw new DebuggerException("Unimplemented");
154 }
155 public void setOopHandleAt (long offset, OopHandle value)
156 throws UnmappedAddressException, UnalignedAddressException {
157 throw new DebuggerException("Unimplemented");
158 }
159
160 //
161 // Arithmetic operations -- necessary evil.
162 //
163
164 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
165 long value = addr + offset;
166 if (value == 0) {
167 return null;
168 }
169 return new DbxAddress(debugger, value);
170 }
171
172 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
173 long value = addr + offset;
174 if (value == 0) {
175 return null;
176 }
177 return new DbxOopHandle(debugger, value);
178 }
179
180 /** (FIXME: any signed/unsigned issues? Should this work for
181 OopHandles?) */
182 public long minus(Address arg) {
183 if (arg == null) {
184 return addr;
185 }
186 return addr - ((DbxAddress) arg).addr;
187 }
188
189 // Two's complement representation.
190 // All negative numbers are larger than positive numbers.
191 // Numbers with the same sign can be compared normally.
192 // Test harness is below in main().
193
194 public boolean lessThan (Address arg) {
195 if (arg == null) {
196 return false;
197 }
198 DbxAddress dbxArg = (DbxAddress) arg;
199 if ((addr >= 0) && (dbxArg.addr < 0)) {
200 return true;
201 }
202 if ((addr < 0) && (dbxArg.addr >= 0)) {
203 return false;
204 }
205 return (addr < dbxArg.addr);
206 }
207
208 public boolean lessThanOrEqual (Address arg) {
209 if (arg == null) {
210 return false;
211 }
212 DbxAddress dbxArg = (DbxAddress) arg;
213 if ((addr >= 0) && (dbxArg.addr < 0)) {
214 return true;
215 }
216 if ((addr < 0) && (dbxArg.addr >= 0)) {
217 return false;
218 }
219 return (addr <= dbxArg.addr);
220 }
221
222 public boolean greaterThan (Address arg) {
223 if (arg == null) {
224 return true;
225 }
226 DbxAddress dbxArg = (DbxAddress) arg;
227 if ((addr >= 0) && (dbxArg.addr < 0)) {
228 return false;
229 }
230 if ((addr < 0) && (dbxArg.addr >= 0)) {
231 return true;
232 }
233 return (addr > dbxArg.addr);
234 }
235
236 public boolean greaterThanOrEqual(Address arg) {
237 if (arg == null) {
238 return true;
239 }
240 DbxAddress dbxArg = (DbxAddress) arg;
241 if ((addr >= 0) && (dbxArg.addr < 0)) {
242 return false;
243 }
244 if ((addr < 0) && (dbxArg.addr >= 0)) {
245 return true;
246 }
247 return (addr >= dbxArg.addr);
248 }
249
250 public Address andWithMask(long mask) throws UnsupportedOperationException {
251 long value = addr & mask;
252 if (value == 0) {
253 return null;
254 }
255 return new DbxAddress(debugger, value);
256 }
257
258 public Address orWithMask(long mask) throws UnsupportedOperationException {
259 long value = addr | mask;
260 if (value == 0) {
261 return null;
262 }
263 return new DbxAddress(debugger, value);
264 }
265
266 public Address xorWithMask(long mask) throws UnsupportedOperationException {
267 long value = addr ^ mask;
268 if (value == 0) {
269 return null;
270 }
271 return new DbxAddress(debugger, value);
272 }
273
274
275 //--------------------------------------------------------------------------------
276 // Internals only below this point
277 //
278
279 long getValue() {
280 return addr;
281 }
282
283
284 private static void check(boolean arg, String failMessage) {
285 if (!arg) {
286 System.err.println(failMessage + ": FAILED");
287 System.exit(1);
288 }
289 }
290
291 // Test harness
292 public static void main(String[] args) {
293 // p/n indicates whether the interior address is really positive
294 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
295
296 DbxAddress p1 = new DbxAddress(null, 0x7FFFFFFFFFFFFFF0L);
297 DbxAddress p2 = (DbxAddress) p1.addOffsetTo(10);
298 DbxAddress n1 = (DbxAddress) p2.addOffsetTo(10);
299 DbxAddress n2 = (DbxAddress) n1.addOffsetTo(10);
300
301 // lessThan positive tests
302 check(p1.lessThan(p2), "lessThan 1");
303 check(p1.lessThan(n1), "lessThan 2");
304 check(p1.lessThan(n2), "lessThan 3");
305 check(p2.lessThan(n1), "lessThan 4");
306 check(p2.lessThan(n2), "lessThan 5");
307 check(n1.lessThan(n2), "lessThan 6");
308
309 // lessThan negative tests
310 check(!p1.lessThan(p1), "lessThan 7");
311 check(!p2.lessThan(p2), "lessThan 8");
312 check(!n1.lessThan(n1), "lessThan 9");
313 check(!n2.lessThan(n2), "lessThan 10");
314
315 check(!p2.lessThan(p1), "lessThan 11");
316 check(!n1.lessThan(p1), "lessThan 12");
317 check(!n2.lessThan(p1), "lessThan 13");
318 check(!n1.lessThan(p2), "lessThan 14");
319 check(!n2.lessThan(p2), "lessThan 15");
320 check(!n2.lessThan(n1), "lessThan 16");
321
322 // lessThanOrEqual positive tests
323 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
324 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
325 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
326 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
327
328 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
329 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
330 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
331 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
332 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
333 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
334
335 // lessThanOrEqual negative tests
336 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
337 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
338 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
339 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
340 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
341 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
342
343 // greaterThan positive tests
344 check(n2.greaterThan(p1), "greaterThan 1");
345 check(n2.greaterThan(p2), "greaterThan 2");
346 check(n2.greaterThan(n1), "greaterThan 3");
347 check(n1.greaterThan(p1), "greaterThan 4");
348 check(n1.greaterThan(p2), "greaterThan 5");
349 check(p2.greaterThan(p1), "greaterThan 6");
350
351 // greaterThan negative tests
352 check(!p1.greaterThan(p1), "greaterThan 7");
353 check(!p2.greaterThan(p2), "greaterThan 8");
354 check(!n1.greaterThan(n1), "greaterThan 9");
355 check(!n2.greaterThan(n2), "greaterThan 10");
356
357 check(!p1.greaterThan(n2), "greaterThan 11");
358 check(!p2.greaterThan(n2), "greaterThan 12");
359 check(!n1.greaterThan(n2), "greaterThan 13");
360 check(!p1.greaterThan(n1), "greaterThan 14");
361 check(!p2.greaterThan(n1), "greaterThan 15");
362 check(!p1.greaterThan(p2), "greaterThan 16");
363
364 // greaterThanOrEqual positive tests
365 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
366 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
367 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
368 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
369
370 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
371 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
372 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
373 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
374 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
375 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
376
377 // greaterThanOrEqual negative tests
378 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
379 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
380 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
381 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
382 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
383 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
384
385 System.err.println("DbxAddress: all tests passed successfully.");
386 }
387 }