Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 17524 | 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.debugger.linux; | |
| 26 | |
| 10229 | 27 import java.io.File; |
| 28 import java.util.ArrayList; | |
| 29 import java.util.List; | |
| 30 | |
| 31 import sun.jvm.hotspot.debugger.Address; | |
| 32 import sun.jvm.hotspot.debugger.DebuggerBase; | |
| 33 import sun.jvm.hotspot.debugger.DebuggerException; | |
| 34 import sun.jvm.hotspot.debugger.DebuggerUtilities; | |
| 35 import sun.jvm.hotspot.debugger.MachineDescription; | |
| 36 import sun.jvm.hotspot.debugger.NotInHeapException; | |
| 37 import sun.jvm.hotspot.debugger.OopHandle; | |
| 38 import sun.jvm.hotspot.debugger.ReadResult; | |
| 39 import sun.jvm.hotspot.debugger.ThreadProxy; | |
| 40 import sun.jvm.hotspot.debugger.UnalignedAddressException; | |
| 41 import sun.jvm.hotspot.debugger.UnmappedAddressException; | |
| 42 import sun.jvm.hotspot.debugger.cdbg.CDebugger; | |
| 43 import sun.jvm.hotspot.debugger.cdbg.ClosestSymbol; | |
| 44 import sun.jvm.hotspot.debugger.cdbg.LoadObject; | |
| 45 import sun.jvm.hotspot.utilities.PlatformInfo; | |
| 0 | 46 |
| 47 /** <P> An implementation of the JVMDebugger interface. The basic debug | |
| 48 facilities are implemented through ptrace interface in the JNI code | |
| 49 (libsaproc.so). Library maps and symbol table management are done in | |
| 50 JNI. </P> | |
| 51 | |
| 52 <P> <B>NOTE</B> that since we have the notion of fetching "Java | |
| 53 primitive types" from the remote process (which might have | |
| 54 different sizes than we expect) we have a bootstrapping | |
| 55 problem. We need to know the sizes of these types before we can | |
| 56 fetch them. The current implementation solves this problem by | |
| 57 requiring that it be configured with these type sizes before they | |
| 58 can be fetched. The readJ(Type) routines here will throw a | |
| 59 RuntimeException if they are called before the debugger is | |
| 60 configured with the Java primitive type sizes. </P> */ | |
| 61 | |
| 62 public class LinuxDebuggerLocal extends DebuggerBase implements LinuxDebugger { | |
| 63 private boolean useGCC32ABI; | |
| 64 private boolean attached; | |
| 65 private long p_ps_prochandle; // native debugger handle | |
| 66 private boolean isCore; | |
| 67 | |
| 68 // CDebugger support | |
| 69 private LinuxCDebugger cdbg; | |
| 70 | |
| 71 // threadList and loadObjectList are filled by attach0 method | |
| 72 private List threadList; | |
| 73 private List loadObjectList; | |
| 74 | |
| 75 // called by native method lookupByAddress0 | |
| 76 private ClosestSymbol createClosestSymbol(String name, long offset) { | |
| 77 return new ClosestSymbol(name, offset); | |
| 78 } | |
| 79 | |
| 80 // called by native method attach0 | |
| 81 private LoadObject createLoadObject(String fileName, long textsize, | |
| 82 long base) { | |
| 83 File f = new File(fileName); | |
| 84 Address baseAddr = newAddress(base); | |
| 85 return new SharedObject(this, fileName, f.length(), baseAddr); | |
| 86 } | |
| 87 | |
| 88 // native methods | |
| 89 | |
| 90 private native static void init0() | |
| 91 throws DebuggerException; | |
| 92 private native void attach0(int pid) | |
| 93 throws DebuggerException; | |
| 94 private native void attach0(String execName, String coreName) | |
| 95 throws DebuggerException; | |
| 96 private native void detach0() | |
| 97 throws DebuggerException; | |
| 98 private native long lookupByName0(String objectName, String symbol) | |
| 99 throws DebuggerException; | |
| 100 private native ClosestSymbol lookupByAddress0(long address) | |
| 101 throws DebuggerException; | |
| 102 private native long[] getThreadIntegerRegisterSet0(int lwp_id) | |
| 103 throws DebuggerException; | |
| 104 private native byte[] readBytesFromProcess0(long address, long numBytes) | |
| 105 throws DebuggerException; | |
| 106 public native static int getAddressSize() ; | |
| 107 | |
| 108 // Note on Linux threads are really processes. When target process is | |
| 109 // attached by a serviceability agent thread, only that thread can do | |
| 110 // ptrace operations on the target. This is because from kernel's point | |
| 111 // view, other threads are just separate processes and they are not | |
| 112 // attached to the target. When they attempt to make ptrace calls, | |
| 113 // an ESRCH error will be returned as kernel believes target is not | |
| 114 // being traced by the caller. | |
| 115 // To work around the problem, we use a worker thread here to handle | |
| 116 // all JNI functions that are making ptrace calls. | |
| 117 | |
| 118 interface WorkerThreadTask { | |
| 119 public void doit(LinuxDebuggerLocal debugger) throws DebuggerException; | |
| 120 } | |
| 121 | |
| 122 class LinuxDebuggerLocalWorkerThread extends Thread { | |
| 123 LinuxDebuggerLocal debugger; | |
| 124 WorkerThreadTask task; | |
| 125 DebuggerException lastException; | |
| 126 | |
| 127 public LinuxDebuggerLocalWorkerThread(LinuxDebuggerLocal debugger) { | |
| 128 this.debugger = debugger; | |
| 129 setDaemon(true); | |
| 130 } | |
| 131 | |
| 132 public void run() { | |
| 133 synchronized (workerThread) { | |
| 134 for (;;) { | |
| 135 if (task != null) { | |
| 136 lastException = null; | |
| 137 try { | |
| 138 task.doit(debugger); | |
| 139 } catch (DebuggerException exp) { | |
| 140 lastException = exp; | |
| 141 } | |
| 142 task = null; | |
| 143 workerThread.notifyAll(); | |
| 144 } | |
| 145 | |
| 146 try { | |
| 147 workerThread.wait(); | |
| 148 } catch (InterruptedException x) {} | |
| 149 } | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 public WorkerThreadTask execute(WorkerThreadTask task) throws DebuggerException { | |
| 154 synchronized (workerThread) { | |
| 155 this.task = task; | |
| 156 workerThread.notifyAll(); | |
| 157 while (this.task != null) { | |
| 158 try { | |
| 159 workerThread.wait(); | |
| 160 } catch (InterruptedException x) {} | |
| 161 } | |
| 162 if (lastException != null) { | |
| 163 throw new DebuggerException(lastException); | |
| 164 } else { | |
| 165 return task; | |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 private LinuxDebuggerLocalWorkerThread workerThread = null; | |
| 172 | |
| 173 //---------------------------------------------------------------------- | |
| 174 // Implementation of Debugger interface | |
| 175 // | |
| 176 | |
| 177 /** <P> machDesc may not be null. </P> | |
| 178 | |
| 179 <P> useCache should be set to true if debugging is being done | |
| 180 locally, and to false if the debugger is being created for the | |
| 181 purpose of supporting remote debugging. </P> */ | |
| 182 public LinuxDebuggerLocal(MachineDescription machDesc, | |
| 183 boolean useCache) throws DebuggerException { | |
| 184 this.machDesc = machDesc; | |
| 185 utils = new DebuggerUtilities(machDesc.getAddressSize(), | |
| 186 machDesc.isBigEndian()) { | |
| 187 public void checkAlignment(long address, long alignment) { | |
| 188 // Need to override default checkAlignment because we need to | |
| 189 // relax alignment constraints on Linux/x86 | |
| 190 if ( (address % alignment != 0) | |
| 191 &&(alignment != 8 || address % 4 != 0)) { | |
| 192 throw new UnalignedAddressException( | |
| 193 "Trying to read at address: " | |
| 194 + addressValueToString(address) | |
| 195 + " with alignment: " + alignment, | |
| 196 address); | |
| 197 } | |
| 198 } | |
| 199 }; | |
| 200 | |
| 201 if (useCache) { | |
| 202 // FIXME: re-test necessity of cache on Linux, where data | |
| 203 // fetching is faster | |
| 204 // Cache portion of the remote process's address space. | |
| 205 // Fetching data over the socket connection to dbx is slow. | |
| 206 // Might be faster if we were using a binary protocol to talk to | |
| 207 // dbx, but would have to test. For now, this cache works best | |
| 208 // if it covers the entire heap of the remote process. FIXME: at | |
| 209 // least should make this tunable from the outside, i.e., via | |
| 210 // the UI. This is a cache of 4096 4K pages, or 16 MB. The page | |
| 211 // size must be adjusted to be the hardware's page size. | |
| 212 // (FIXME: should pick this up from the debugger.) | |
| 213 if (getCPU().equals("ia64")) { | |
| 214 initCache(16384, parseCacheNumPagesProperty(1024)); | |
| 215 } else { | |
| 216 initCache(4096, parseCacheNumPagesProperty(4096)); | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 workerThread = new LinuxDebuggerLocalWorkerThread(this); | |
| 221 workerThread.start(); | |
| 222 } | |
| 223 | |
| 224 /** From the Debugger interface via JVMDebugger */ | |
| 225 public boolean hasProcessList() throws DebuggerException { | |
| 226 return false; | |
| 227 } | |
| 228 | |
| 229 /** From the Debugger interface via JVMDebugger */ | |
| 230 public List getProcessList() throws DebuggerException { | |
| 231 throw new DebuggerException("getProcessList not implemented yet"); | |
| 232 } | |
| 233 | |
| 234 private void checkAttached() throws DebuggerException { | |
| 235 if (attached) { | |
| 236 if (isCore) { | |
| 237 throw new DebuggerException("attached to a core dump already"); | |
| 238 } else { | |
| 239 throw new DebuggerException("attached to a process already"); | |
| 240 } | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 private void requireAttach() { | |
| 245 if (! attached) { | |
| 246 throw new RuntimeException("not attached to a process or a core!"); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 /* called from attach methods */ | |
| 251 private void findABIVersion() throws DebuggerException { | |
| 10229 | 252 if (lookupByName0("libjvm.so", "__vt_10JavaThread") != 0) { |
| 0 | 253 // old C++ ABI |
| 254 useGCC32ABI = false; | |
| 255 } else { | |
| 256 // new C++ ABI | |
| 257 useGCC32ABI = true; | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 /** From the Debugger interface via JVMDebugger */ | |
| 262 public synchronized void attach(int processID) throws DebuggerException { | |
| 263 checkAttached(); | |
| 264 threadList = new ArrayList(); | |
| 265 loadObjectList = new ArrayList(); | |
| 266 class AttachTask implements WorkerThreadTask { | |
| 267 int pid; | |
| 268 public void doit(LinuxDebuggerLocal debugger) { | |
| 269 debugger.attach0(pid); | |
| 270 debugger.attached = true; | |
| 271 debugger.isCore = false; | |
| 272 findABIVersion(); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 AttachTask task = new AttachTask(); | |
| 277 task.pid = processID; | |
| 278 workerThread.execute(task); | |
| 279 } | |
| 280 | |
| 281 /** From the Debugger interface via JVMDebugger */ | |
| 282 public synchronized void attach(String execName, String coreName) { | |
| 283 checkAttached(); | |
| 284 threadList = new ArrayList(); | |
| 285 loadObjectList = new ArrayList(); | |
| 286 attach0(execName, coreName); | |
| 287 attached = true; | |
| 288 isCore = true; | |
| 289 findABIVersion(); | |
| 290 } | |
| 291 | |
| 292 /** From the Debugger interface via JVMDebugger */ | |
| 293 public synchronized boolean detach() { | |
| 294 if (!attached) { | |
| 295 return false; | |
| 296 } | |
| 297 | |
| 298 threadList = null; | |
| 299 loadObjectList = null; | |
| 300 | |
| 301 if (isCore) { | |
| 302 detach0(); | |
| 303 attached = false; | |
| 304 return true; | |
| 305 } else { | |
| 306 class DetachTask implements WorkerThreadTask { | |
| 307 boolean result = false; | |
| 308 | |
| 309 public void doit(LinuxDebuggerLocal debugger) { | |
| 310 debugger.detach0(); | |
| 311 debugger.attached = false; | |
| 312 result = true; | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 DetachTask task = new DetachTask(); | |
| 317 workerThread.execute(task); | |
| 318 return task.result; | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 /** From the Debugger interface via JVMDebugger */ | |
| 323 public Address parseAddress(String addressString) | |
| 324 throws NumberFormatException { | |
| 325 long addr = utils.scanAddress(addressString); | |
| 326 if (addr == 0) { | |
| 327 return null; | |
| 328 } | |
| 329 return new LinuxAddress(this, addr); | |
| 330 } | |
| 331 | |
| 332 /** From the Debugger interface via JVMDebugger */ | |
| 333 public String getOS() { | |
| 334 return PlatformInfo.getOS(); | |
| 335 } | |
| 336 | |
| 337 /** From the Debugger interface via JVMDebugger */ | |
| 338 public String getCPU() { | |
| 339 return PlatformInfo.getCPU(); | |
| 340 } | |
| 341 | |
| 342 public boolean hasConsole() throws DebuggerException { | |
| 343 return false; | |
| 344 } | |
| 345 | |
| 346 public String consoleExecuteCommand(String cmd) throws DebuggerException { | |
| 347 throw new DebuggerException("No debugger console available on Linux"); | |
| 348 } | |
| 349 | |
| 350 public String getConsolePrompt() throws DebuggerException { | |
| 351 return null; | |
| 352 } | |
| 353 | |
| 354 /* called from lookup */ | |
| 355 private long handleGCC32ABI(long addr, String symbol) throws DebuggerException { | |
| 356 if (useGCC32ABI && symbol.startsWith("_ZTV")) { | |
| 357 return addr + (2 * machDesc.getAddressSize()); | |
| 358 } else { | |
| 359 return addr; | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 364 public synchronized Address lookup(String objectName, String symbol) { | |
| 365 requireAttach(); | |
| 366 if (!attached) { | |
| 367 return null; | |
| 368 } | |
| 369 | |
| 370 if (isCore) { | |
| 371 long addr = lookupByName0(objectName, symbol); | |
| 372 return (addr == 0)? null : new LinuxAddress(this, handleGCC32ABI(addr, symbol)); | |
| 373 } else { | |
| 374 class LookupByNameTask implements WorkerThreadTask { | |
| 375 String objectName, symbol; | |
| 376 Address result; | |
| 377 | |
| 378 public void doit(LinuxDebuggerLocal debugger) { | |
| 379 long addr = debugger.lookupByName0(objectName, symbol); | |
| 380 result = (addr == 0 ? null : new LinuxAddress(debugger, handleGCC32ABI(addr, symbol))); | |
| 381 } | |
| 382 } | |
| 383 | |
| 384 LookupByNameTask task = new LookupByNameTask(); | |
| 385 task.objectName = objectName; | |
| 386 task.symbol = symbol; | |
| 387 workerThread.execute(task); | |
| 388 return task.result; | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 /** From the SymbolLookup interface via Debugger and JVMDebugger */ | |
| 393 public synchronized OopHandle lookupOop(String objectName, String symbol) { | |
| 394 Address addr = lookup(objectName, symbol); | |
| 395 if (addr == null) { | |
| 396 return null; | |
| 397 } | |
| 398 return addr.addOffsetToAsOopHandle(0); | |
| 399 } | |
| 400 | |
| 401 /** From the Debugger interface */ | |
| 402 public MachineDescription getMachineDescription() { | |
| 403 return machDesc; | |
| 404 } | |
| 405 | |
| 406 //---------------------------------------------------------------------- | |
| 407 // Implementation of ThreadAccess interface | |
| 408 // | |
| 409 | |
| 410 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 411 public ThreadProxy getThreadForIdentifierAddress(Address addr) { | |
| 412 return new LinuxThread(this, addr); | |
| 413 } | |
| 414 | |
| 415 /** From the ThreadAccess interface via Debugger and JVMDebugger */ | |
| 416 public ThreadProxy getThreadForThreadId(long id) { | |
| 417 return new LinuxThread(this, id); | |
| 418 } | |
| 419 | |
| 420 //---------------------------------------------------------------------- | |
| 421 // Internal routines (for implementation of LinuxAddress). | |
| 422 // These must not be called until the MachineDescription has been set up. | |
| 423 // | |
| 424 | |
| 425 /** From the LinuxDebugger interface */ | |
| 426 public String addressValueToString(long address) { | |
| 427 return utils.addressValueToString(address); | |
| 428 } | |
| 429 | |
| 430 /** From the LinuxDebugger interface */ | |
| 431 public LinuxAddress readAddress(long address) | |
| 432 throws UnmappedAddressException, UnalignedAddressException { | |
| 433 long value = readAddressValue(address); | |
| 434 return (value == 0 ? null : new LinuxAddress(this, value)); | |
| 435 } | |
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436 public LinuxAddress readCompOopAddress(long address) |
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437 throws UnmappedAddressException, UnalignedAddressException { |
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438 long value = readCompOopAddressValue(address); |
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439 return (value == 0 ? null : new LinuxAddress(this, value)); |
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440 } |
| 0 | 441 |
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442 public LinuxAddress readCompKlassAddress(long address) |
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443 throws UnmappedAddressException, UnalignedAddressException { |
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444 long value = readCompKlassAddressValue(address); |
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445 return (value == 0 ? null : new LinuxAddress(this, value)); |
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446 } |
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447 |
| 0 | 448 /** From the LinuxDebugger interface */ |
| 449 public LinuxOopHandle readOopHandle(long address) | |
| 450 throws UnmappedAddressException, UnalignedAddressException, | |
| 451 NotInHeapException { | |
| 452 long value = readAddressValue(address); | |
| 453 return (value == 0 ? null : new LinuxOopHandle(this, value)); | |
| 454 } | |
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455 public LinuxOopHandle readCompOopHandle(long address) |
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456 throws UnmappedAddressException, UnalignedAddressException, |
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457 NotInHeapException { |
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458 long value = readCompOopAddressValue(address); |
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459 return (value == 0 ? null : new LinuxOopHandle(this, value)); |
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460 } |
| 0 | 461 |
| 462 //---------------------------------------------------------------------- | |
| 463 // Thread context access | |
| 464 // | |
| 465 | |
| 466 public synchronized long[] getThreadIntegerRegisterSet(int lwp_id) | |
| 467 throws DebuggerException { | |
| 468 requireAttach(); | |
| 469 if (isCore) { | |
| 470 return getThreadIntegerRegisterSet0(lwp_id); | |
| 471 } else { | |
| 472 class GetThreadIntegerRegisterSetTask implements WorkerThreadTask { | |
| 473 int lwp_id; | |
| 474 long[] result; | |
| 475 public void doit(LinuxDebuggerLocal debugger) { | |
| 476 result = debugger.getThreadIntegerRegisterSet0(lwp_id); | |
| 477 } | |
| 478 } | |
| 479 | |
| 480 GetThreadIntegerRegisterSetTask task = new GetThreadIntegerRegisterSetTask(); | |
| 481 task.lwp_id = lwp_id; | |
| 482 workerThread.execute(task); | |
| 483 return task.result; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 /** Need to override this to relax alignment checks on x86. */ | |
| 488 public long readCInteger(long address, long numBytes, boolean isUnsigned) | |
| 489 throws UnmappedAddressException, UnalignedAddressException { | |
| 490 // Only slightly relaxed semantics -- this is a hack, but is | |
| 491 // necessary on x86 where it seems the compiler is | |
| 492 // putting some global 64-bit data on 32-bit boundaries | |
| 493 if (numBytes == 8) { | |
| 494 utils.checkAlignment(address, 4); | |
| 495 } else { | |
| 496 utils.checkAlignment(address, numBytes); | |
| 497 } | |
| 498 byte[] data = readBytes(address, numBytes); | |
| 499 return utils.dataToCInteger(data, isUnsigned); | |
| 500 } | |
| 501 | |
| 502 // Overridden from DebuggerBase because we need to relax alignment | |
| 503 // constraints on x86 | |
| 504 public long readJLong(long address) | |
| 505 throws UnmappedAddressException, UnalignedAddressException { | |
| 506 utils.checkAlignment(address, jintSize); | |
| 507 byte[] data = readBytes(address, jlongSize); | |
| 508 return utils.dataToJLong(data, jlongSize); | |
| 509 } | |
| 510 | |
| 511 //---------------------------------------------------------------------- | |
| 512 // Address access. Can not be package private, but should only be | |
| 513 // accessed by the architecture-specific subpackages. | |
| 514 | |
| 515 /** From the LinuxDebugger interface */ | |
| 516 public long getAddressValue(Address addr) { | |
| 517 if (addr == null) return 0; | |
| 518 return ((LinuxAddress) addr).getValue(); | |
| 519 } | |
| 520 | |
| 521 /** From the LinuxDebugger interface */ | |
| 522 public Address newAddress(long value) { | |
| 523 if (value == 0) return null; | |
| 524 return new LinuxAddress(this, value); | |
| 525 } | |
| 526 | |
| 527 /** From the LinuxCDebugger interface */ | |
| 528 public List/*<ThreadProxy>*/ getThreadList() { | |
| 529 requireAttach(); | |
| 530 return threadList; | |
| 531 } | |
| 532 | |
| 533 /** From the LinuxCDebugger interface */ | |
| 534 public List/*<LoadObject>*/ getLoadObjectList() { | |
| 535 requireAttach(); | |
| 536 return loadObjectList; | |
| 537 } | |
| 538 | |
| 539 /** From the LinuxCDebugger interface */ | |
| 540 public synchronized ClosestSymbol lookup(long addr) { | |
| 541 requireAttach(); | |
| 542 if (isCore) { | |
| 543 return lookupByAddress0(addr); | |
| 544 } else { | |
| 545 class LookupByAddressTask implements WorkerThreadTask { | |
| 546 long addr; | |
| 547 ClosestSymbol result; | |
| 548 | |
| 549 public void doit(LinuxDebuggerLocal debugger) { | |
| 550 result = debugger.lookupByAddress0(addr); | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 LookupByAddressTask task = new LookupByAddressTask(); | |
| 555 task.addr = addr; | |
| 556 workerThread.execute(task); | |
| 557 return task.result; | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 public CDebugger getCDebugger() { | |
| 562 if (cdbg == null) { | |
| 563 String cpu = getCPU(); | |
| 564 if (cpu.equals("ia64") ) { | |
| 565 // IA-64 is not supported because of stack-walking issues | |
| 566 return null; | |
| 567 } | |
| 568 cdbg = new LinuxCDebugger(this); | |
| 569 } | |
| 570 return cdbg; | |
| 571 } | |
| 572 | |
| 573 /** This reads bytes from the remote process. */ | |
| 574 public synchronized ReadResult readBytesFromProcess(long address, | |
| 575 long numBytes) throws UnmappedAddressException, DebuggerException { | |
| 576 requireAttach(); | |
| 577 if (isCore) { | |
| 578 byte[] res = readBytesFromProcess0(address, numBytes); | |
| 579 return (res != null)? new ReadResult(res) : new ReadResult(address); | |
| 580 } else { | |
| 581 class ReadBytesFromProcessTask implements WorkerThreadTask { | |
| 582 long address, numBytes; | |
| 583 ReadResult result; | |
| 584 public void doit(LinuxDebuggerLocal debugger) { | |
| 585 byte[] res = debugger.readBytesFromProcess0(address, numBytes); | |
| 586 if (res != null) | |
| 587 result = new ReadResult(res); | |
| 588 else | |
| 589 result = new ReadResult(address); | |
| 590 } | |
| 591 } | |
| 592 | |
| 593 ReadBytesFromProcessTask task = new ReadBytesFromProcessTask(); | |
| 594 task.address = address; | |
| 595 task.numBytes = numBytes; | |
| 596 workerThread.execute(task); | |
| 597 return task.result; | |
| 598 } | |
| 599 } | |
| 600 | |
| 601 public void writeBytesToProcess(long address, long numBytes, byte[] data) | |
| 602 throws UnmappedAddressException, DebuggerException { | |
| 603 // FIXME | |
| 604 throw new DebuggerException("Unimplemented"); | |
| 605 } | |
| 606 | |
| 607 static { | |
| 608 System.loadLibrary("saproc"); | |
| 609 init0(); | |
| 610 } | |
| 611 } |