The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * Link between JDWP and the VM. The code here only runs as a result of |
| 19 | * requests from the debugger, so speed is not essential. Maintaining |
| 20 | * isolation of the JDWP code should make it easier to maintain and reuse. |
| 21 | * |
| 22 | * Collecting all debugger-related pieces here will also allow us to #ifdef |
| 23 | * the JDWP code out of release builds. |
| 24 | */ |
| 25 | #include "Dalvik.h" |
| 26 | |
| 27 | /* |
| 28 | Notes on garbage collection and object registration |
| 29 | |
| 30 | JDWP does not allow the debugger to assume that objects passed to it |
| 31 | will not be garbage collected. It specifies explicit commands (e.g. |
| 32 | ObjectReference.DisableCollection) to allow the debugger to manage |
| 33 | object lifetime. It does, however, require that the VM not re-use an |
| 34 | object ID unless an explicit "dispose" call has been made, and if the |
| 35 | VM asks for a now-collected object we must return INVALID_OBJECT. |
| 36 | |
| 37 | JDWP also requires that, while the VM is suspended, no garbage collection |
| 38 | occur. The JDWP docs suggest that this is obvious, because no threads |
| 39 | can be running. Unfortunately it's not entirely clear how to deal |
| 40 | with situations where the debugger itself allocates strings or executes |
| 41 | code as part of displaying variables. The easiest way to enforce this, |
| 42 | short of disabling GC whenever the debugger is connected, is to ensure |
| 43 | that the debugger thread can't cause a GC: it has to expand the heap or |
| 44 | fail to allocate. (Might want to make that "is debugger thread AND all |
| 45 | other threads are suspended" to avoid unnecessary heap expansion by a |
| 46 | poorly-timed JDWP request.) |
| 47 | |
| 48 | We use an "object registry" so that we can separate our internal |
| 49 | representation from what we show the debugger. This allows us to |
| 50 | return a registry table index instead of a pointer or handle. |
| 51 | |
| 52 | There are various approaches we can take to achieve correct behavior: |
| 53 | |
| 54 | (1) Disable garbage collection entirely while the debugger is attached. |
| 55 | This is very easy, but doesn't allow extended debugging sessions on |
| 56 | small devices. |
| 57 | |
| 58 | (2) Keep a list of all object references requested by or sent to the |
| 59 | debugger, and include the list in the GC root set. This ensures that |
| 60 | objects the debugger might care about don't go away. This is straightforward, |
| 61 | but it can cause us to hold on to large objects and prevent finalizers from |
| 62 | being executed. |
| 63 | |
| 64 | (3) Keep a list of what amount to weak object references. This way we |
| 65 | don't interfere with the GC, and can support JDWP requests like |
| 66 | "ObjectReference.IsCollected". |
| 67 | |
| 68 | The current implementation is #2. The set should be reasonably small and |
| 69 | performance isn't critical, so a simple expanding array can be used. |
| 70 | |
| 71 | |
| 72 | Notes on threads: |
| 73 | |
| 74 | The VM has a Thread struct associated with every active thread. The |
| 75 | ThreadId we pass to the debugger is the ObjectId for the java/lang/Thread |
| 76 | object, so to retrieve the VM's Thread struct we have to scan through the |
| 77 | list looking for a match. |
| 78 | |
| 79 | When a thread goes away, we lock the list and free the struct. To |
| 80 | avoid having the thread list updated or Thread structs freed out from |
| 81 | under us, we want to acquire and hold the thread list lock while we're |
| 82 | performing operations on Threads. Exceptions to this rule are noted in |
| 83 | a couple of places. |
| 84 | |
| 85 | We can speed this up a bit by adding a Thread struct pointer to the |
| 86 | java/lang/Thread object, and ensuring that both are discarded at the |
| 87 | same time. |
| 88 | */ |
| 89 | |
| 90 | #define THREAD_GROUP_ALL ((ObjectId) 0x12345) // magic, internal-only value |
| 91 | |
| 92 | #define kSlot0Sub 1000 // Eclipse workaround |
| 93 | |
| 94 | /* |
| 95 | * System init. We don't allocate the registry until first use. |
| 96 | * Make sure we do this before initializing JDWP. |
| 97 | */ |
| 98 | bool dvmDebuggerStartup(void) |
| 99 | { |
| 100 | gDvm.dbgRegistry = dvmHashTableCreate(1000, NULL); |
| 101 | return (gDvm.dbgRegistry != NULL); |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * Free registry storage. |
| 106 | */ |
| 107 | void dvmDebuggerShutdown(void) |
| 108 | { |
| 109 | dvmHashTableFree(gDvm.dbgRegistry); |
| 110 | gDvm.dbgRegistry = NULL; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | /* |
| 115 | * Pass these through to the VM functions. Allows extended checking |
| 116 | * (e.g. "errorcheck" mutexes). If nothing else we can assert() success. |
| 117 | */ |
| 118 | void dvmDbgInitMutex(pthread_mutex_t* pMutex) |
| 119 | { |
| 120 | dvmInitMutex(pMutex); |
| 121 | } |
| 122 | void dvmDbgLockMutex(pthread_mutex_t* pMutex) |
| 123 | { |
| 124 | dvmLockMutex(pMutex); |
| 125 | } |
| 126 | void dvmDbgUnlockMutex(pthread_mutex_t* pMutex) |
| 127 | { |
| 128 | dvmUnlockMutex(pMutex); |
| 129 | } |
| 130 | void dvmDbgInitCond(pthread_cond_t* pCond) |
| 131 | { |
| 132 | pthread_cond_init(pCond, NULL); |
| 133 | } |
| 134 | void dvmDbgCondWait(pthread_cond_t* pCond, pthread_mutex_t* pMutex) |
| 135 | { |
| 136 | int cc = pthread_cond_wait(pCond, pMutex); |
| 137 | assert(cc == 0); |
| 138 | } |
| 139 | void dvmDbgCondSignal(pthread_cond_t* pCond) |
| 140 | { |
| 141 | int cc = pthread_cond_signal(pCond); |
| 142 | assert(cc == 0); |
| 143 | } |
| 144 | void dvmDbgCondBroadcast(pthread_cond_t* pCond) |
| 145 | { |
| 146 | int cc = pthread_cond_broadcast(pCond); |
| 147 | assert(cc == 0); |
| 148 | } |
| 149 | |
| 150 | |
| 151 | /* keep track of type, in case we need to distinguish them someday */ |
| 152 | typedef enum RegistryType { |
| 153 | kObjectId = 0xc1, kRefTypeId |
| 154 | } RegistryType; |
| 155 | |
| 156 | /* |
| 157 | * Hash function for object IDs. Since objects are at least 8 bytes, and |
| 158 | * could someday be allocated on 16-byte boundaries, we don't want to use |
| 159 | * the low 4 bits in our hash. |
| 160 | */ |
| 161 | static inline u4 registryHash(u4 val) |
| 162 | { |
| 163 | return val >> 4; |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * (This is a dvmHashTableLookup() callback.) |
| 168 | */ |
| 169 | static int registryCompare(const void* obj1, const void* obj2) |
| 170 | { |
| 171 | return (int) obj1 - (int) obj2; |
| 172 | } |
| 173 | |
| 174 | |
| 175 | /* |
| 176 | * Determine if an id is already in the list. |
| 177 | * |
| 178 | * If the list doesn't yet exist, this creates it. |
| 179 | * |
| 180 | * Lock the registry before calling here. |
| 181 | */ |
| 182 | static bool lookupId(ObjectId id) |
| 183 | { |
| 184 | void* found; |
| 185 | |
| 186 | found = dvmHashTableLookup(gDvm.dbgRegistry, registryHash((u4) id), |
| 187 | (void*)(u4) id, registryCompare, false); |
| 188 | if (found == NULL) |
| 189 | return false; |
| 190 | assert(found == (void*)(u4) id); |
| 191 | return true; |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * Register an object, if it hasn't already been. |
| 196 | * |
| 197 | * This is used for both ObjectId and RefTypeId. In theory we don't have |
| 198 | * to register RefTypeIds unless we're worried about classes unloading. |
| 199 | * |
| 200 | * Null references must be represented as zero, or the debugger will get |
| 201 | * very confused. |
| 202 | */ |
| 203 | static ObjectId registerObject(const Object* obj, RegistryType type, bool reg) |
| 204 | { |
| 205 | ObjectId id; |
| 206 | |
| 207 | if (obj == NULL) |
| 208 | return 0; |
| 209 | |
| 210 | assert((u4) obj != 0xcccccccc); |
| 211 | assert((u4) obj > 0x100); |
| 212 | |
| 213 | id = (ObjectId)(u4)obj | ((u8) type) << 32; |
| 214 | if (!reg) |
| 215 | return id; |
| 216 | |
| 217 | dvmHashTableLock(gDvm.dbgRegistry); |
| 218 | if (!gDvm.debuggerConnected) { |
| 219 | /* debugger has detached while we were doing stuff? */ |
| 220 | LOGI("ignoring registerObject request in thread=%d\n", |
| 221 | dvmThreadSelf()->threadId); |
| 222 | //dvmAbort(); |
| 223 | goto bail; |
| 224 | } |
| 225 | |
| 226 | (void) dvmHashTableLookup(gDvm.dbgRegistry, registryHash((u4) id), |
| 227 | (void*)(u4) id, registryCompare, true); |
| 228 | |
| 229 | bail: |
| 230 | dvmHashTableUnlock(gDvm.dbgRegistry); |
| 231 | return id; |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * (This is a HashForeachFunc callback.) |
| 236 | */ |
| 237 | static int markRef(void* data, void* arg) |
| 238 | { |
| 239 | UNUSED_PARAMETER(arg); |
| 240 | |
| 241 | //LOGI("dbg mark %p\n", data); |
| 242 | dvmMarkObjectNonNull(data); |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | /* Mark all of the registered debugger references so the |
| 247 | * GC doesn't collect them. |
| 248 | */ |
| 249 | void dvmGcMarkDebuggerRefs() |
| 250 | { |
| 251 | /* dvmDebuggerStartup() may not have been called before the first GC. |
| 252 | */ |
| 253 | if (gDvm.dbgRegistry != NULL) { |
| 254 | dvmHashTableLock(gDvm.dbgRegistry); |
| 255 | dvmHashForeach(gDvm.dbgRegistry, markRef, NULL); |
| 256 | dvmHashTableUnlock(gDvm.dbgRegistry); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * Verify that an object has been registered. If it hasn't, the debugger |
| 262 | * is asking for something we didn't send it, which means something |
| 263 | * somewhere is broken. |
| 264 | * |
| 265 | * If speed is an issue we can encode the registry index in the high |
| 266 | * four bytes. We could also just hard-wire this to "true". |
| 267 | * |
| 268 | * Note this actually takes both ObjectId and RefTypeId. |
| 269 | */ |
| 270 | static bool objectIsRegistered(ObjectId id, RegistryType type) |
| 271 | { |
| 272 | UNUSED_PARAMETER(type); |
| 273 | |
| 274 | if (id == 0) // null reference? |
| 275 | return true; |
| 276 | |
| 277 | dvmHashTableLock(gDvm.dbgRegistry); |
| 278 | bool result = lookupId(id); |
| 279 | dvmHashTableUnlock(gDvm.dbgRegistry); |
| 280 | return result; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * Convert to/from a RefTypeId. |
| 285 | * |
| 286 | * These are rarely NULL, but can be (e.g. java/lang/Object's superclass). |
| 287 | */ |
| 288 | static RefTypeId classObjectToRefTypeId(ClassObject* clazz) |
| 289 | { |
| 290 | return (RefTypeId) registerObject((Object*) clazz, kRefTypeId, true); |
| 291 | } |
| 292 | static RefTypeId classObjectToRefTypeIdNoReg(ClassObject* clazz) |
| 293 | { |
| 294 | return (RefTypeId) registerObject((Object*) clazz, kRefTypeId, false); |
| 295 | } |
| 296 | static ClassObject* refTypeIdToClassObject(RefTypeId id) |
| 297 | { |
| 298 | assert(objectIsRegistered(id, kRefTypeId) || !gDvm.debuggerConnected); |
| 299 | return (ClassObject*)(u4) id; |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * Convert to/from an ObjectId. |
| 304 | */ |
| 305 | static ObjectId objectToObjectId(const Object* obj) |
| 306 | { |
| 307 | return registerObject(obj, kObjectId, true); |
| 308 | } |
| 309 | static ObjectId objectToObjectIdNoReg(const Object* obj) |
| 310 | { |
| 311 | return registerObject(obj, kObjectId, false); |
| 312 | } |
| 313 | static Object* objectIdToObject(ObjectId id) |
| 314 | { |
| 315 | assert(objectIsRegistered(id, kObjectId) || !gDvm.debuggerConnected); |
| 316 | return (Object*)(u4) id; |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * Convert to/from a MethodId. |
| 321 | * |
| 322 | * These IDs are only guaranteed unique within a class, so they could be |
| 323 | * an enumeration index. For now we just use the Method*. |
| 324 | */ |
| 325 | static MethodId methodToMethodId(const Method* meth) |
| 326 | { |
| 327 | return (MethodId)(u4) meth; |
| 328 | } |
| 329 | static Method* methodIdToMethod(RefTypeId refTypeId, MethodId id) |
| 330 | { |
| 331 | // TODO? verify "id" is actually a method in "refTypeId" |
| 332 | return (Method*)(u4) id; |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * Convert to/from a FieldId. |
| 337 | * |
| 338 | * These IDs are only guaranteed unique within a class, so they could be |
| 339 | * an enumeration index. For now we just use the Field*. |
| 340 | */ |
| 341 | static FieldId fieldToFieldId(const Field* field) |
| 342 | { |
| 343 | return (FieldId)(u4) field; |
| 344 | } |
| 345 | static Field* fieldIdToField(RefTypeId refTypeId, FieldId id) |
| 346 | { |
| 347 | // TODO? verify "id" is actually a field in "refTypeId" |
| 348 | return (Field*)(u4) id; |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * Convert to/from a FrameId. |
| 353 | * |
| 354 | * We just return a pointer to the stack frame. |
| 355 | */ |
| 356 | static FrameId frameToFrameId(const void* frame) |
| 357 | { |
| 358 | return (FrameId)(u4) frame; |
| 359 | } |
| 360 | static void* frameIdToFrame(FrameId id) |
| 361 | { |
| 362 | return (void*)(u4) id; |
| 363 | } |
| 364 | |
| 365 | |
| 366 | /* |
| 367 | * Get the invocation request state. |
| 368 | */ |
| 369 | DebugInvokeReq* dvmDbgGetInvokeReq(void) |
| 370 | { |
| 371 | return &dvmThreadSelf()->invokeReq; |
| 372 | } |
| 373 | |
| 374 | /* |
| 375 | * Enable the object registry, but don't enable debugging features yet. |
| 376 | * |
| 377 | * Only called from the JDWP handler thread. |
| 378 | */ |
| 379 | void dvmDbgConnected(void) |
| 380 | { |
| 381 | assert(!gDvm.debuggerConnected); |
| 382 | |
| 383 | LOGV("JDWP has attached\n"); |
| 384 | assert(dvmHashTableNumEntries(gDvm.dbgRegistry) == 0); |
| 385 | gDvm.debuggerConnected = true; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * Enable all debugging features, including scans for breakpoints. |
| 390 | * |
| 391 | * This is a no-op if we're already active. |
| 392 | * |
| 393 | * Only called from the JDWP handler thread. |
| 394 | */ |
| 395 | void dvmDbgActive(void) |
| 396 | { |
| 397 | if (gDvm.debuggerActive) |
| 398 | return; |
| 399 | |
| 400 | LOGI("Debugger is active\n"); |
| 401 | dvmInitBreakpoints(); |
| 402 | gDvm.debuggerActive = true; |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Disable debugging features. |
| 407 | * |
| 408 | * Set "debuggerConnected" to false, which disables use of the object |
| 409 | * registry. |
| 410 | * |
| 411 | * Only called from the JDWP handler thread. |
| 412 | */ |
| 413 | void dvmDbgDisconnected(void) |
| 414 | { |
| 415 | assert(gDvm.debuggerConnected); |
| 416 | |
| 417 | gDvm.debuggerActive = false; |
| 418 | |
| 419 | dvmHashTableLock(gDvm.dbgRegistry); |
| 420 | gDvm.debuggerConnected = false; |
| 421 | |
| 422 | LOGI("Debugger has detached; object registry had %d entries\n", |
| 423 | dvmHashTableNumEntries(gDvm.dbgRegistry)); |
| 424 | //int i; |
| 425 | //for (i = 0; i < gDvm.dbgRegistryNext; i++) |
| 426 | // LOGVV("%4d: 0x%llx\n", i, gDvm.dbgRegistryTable[i]); |
| 427 | |
| 428 | dvmHashTableClear(gDvm.dbgRegistry); |
| 429 | dvmHashTableUnlock(gDvm.dbgRegistry); |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Returns "true" if a debugger is connected. |
| 434 | * |
| 435 | * Does not return "true" if it's just a DDM server. |
| 436 | */ |
| 437 | bool dvmDbgIsDebuggerConnected(void) |
| 438 | { |
| 439 | return gDvm.debuggerActive; |
| 440 | } |
| 441 | |
| 442 | /* |
| 443 | * Get time since last debugger activity. Used when figuring out if the |
| 444 | * debugger has finished configuring us. |
| 445 | */ |
| 446 | s8 dvmDbgLastDebuggerActivity(void) |
| 447 | { |
| 448 | return dvmJdwpLastDebuggerActivity(gDvm.jdwpState); |
| 449 | } |
| 450 | |
| 451 | /* |
| 452 | * JDWP thread is running, don't allow GC. |
| 453 | */ |
| 454 | int dvmDbgThreadRunning(void) |
| 455 | { |
| 456 | return dvmChangeStatus(NULL, THREAD_RUNNING); |
| 457 | } |
| 458 | |
| 459 | /* |
| 460 | * JDWP thread is idle, allow GC. |
| 461 | */ |
| 462 | int dvmDbgThreadWaiting(void) |
| 463 | { |
| 464 | return dvmChangeStatus(NULL, THREAD_VMWAIT); |
| 465 | } |
| 466 | |
| 467 | /* |
| 468 | * Restore state returned by Running/Waiting calls. |
| 469 | */ |
| 470 | int dvmDbgThreadContinuing(int status) |
| 471 | { |
| 472 | return dvmChangeStatus(NULL, status); |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * The debugger wants us to exit. |
| 477 | */ |
| 478 | void dvmDbgExit(int status) |
| 479 | { |
| 480 | // TODO? invoke System.exit() to perform exit processing; ends up |
| 481 | // in System.exitInternal(), which can call JNI exit hook |
| 482 | #ifdef WITH_PROFILER |
| 483 | LOGI("GC lifetime allocation: %d bytes\n", gDvm.allocProf.allocCount); |
| 484 | if (CALC_CACHE_STATS) { |
| 485 | dvmDumpAtomicCacheStats(gDvm.instanceofCache); |
| 486 | dvmDumpBootClassPath(); |
| 487 | } |
| 488 | #endif |
| 489 | #ifdef PROFILE_FIELD_ACCESS |
| 490 | dvmDumpFieldAccessCounts(); |
| 491 | #endif |
| 492 | |
| 493 | exit(status); |
| 494 | } |
| 495 | |
| 496 | |
| 497 | /* |
| 498 | * =========================================================================== |
| 499 | * Class, Object, Array |
| 500 | * =========================================================================== |
| 501 | */ |
| 502 | |
| 503 | /* |
| 504 | * Get the class's type descriptor from a reference type ID. |
| 505 | */ |
| 506 | const char* dvmDbgGetClassDescriptor(RefTypeId id) |
| 507 | { |
| 508 | ClassObject* clazz; |
| 509 | |
| 510 | clazz = refTypeIdToClassObject(id); |
| 511 | return clazz->descriptor; |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | * Return the superclass of a class (will be NULL for java/lang/Object). |
| 516 | */ |
| 517 | RefTypeId dvmDbgGetSuperclass(RefTypeId id) |
| 518 | { |
| 519 | ClassObject* clazz = refTypeIdToClassObject(id); |
| 520 | return classObjectToRefTypeId(clazz->super); |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * Return a class's defining class loader. |
| 525 | */ |
| 526 | RefTypeId dvmDbgGetClassLoader(RefTypeId id) |
| 527 | { |
| 528 | ClassObject* clazz = refTypeIdToClassObject(id); |
| 529 | return objectToObjectId(clazz->classLoader); |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Return a class's access flags. |
| 534 | */ |
| 535 | u4 dvmDbgGetAccessFlags(RefTypeId id) |
| 536 | { |
| 537 | ClassObject* clazz = refTypeIdToClassObject(id); |
| 538 | return clazz->accessFlags & JAVA_FLAGS_MASK; |
| 539 | } |
| 540 | |
| 541 | /* |
| 542 | * Is this class an interface? |
| 543 | */ |
| 544 | bool dvmDbgIsInterface(RefTypeId id) |
| 545 | { |
| 546 | ClassObject* clazz = refTypeIdToClassObject(id); |
| 547 | return dvmIsInterfaceClass(clazz); |
| 548 | } |
| 549 | |
| 550 | /* |
| 551 | * dvmHashForeach callback |
| 552 | */ |
| 553 | static int copyRefType(void* vclazz, void* varg) |
| 554 | { |
| 555 | RefTypeId** pRefType = (RefTypeId**)varg; |
| 556 | **pRefType = classObjectToRefTypeId((ClassObject*) vclazz); |
| 557 | (*pRefType)++; |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | /* |
| 562 | * Get the complete list of reference classes (i.e. all classes except |
| 563 | * the primitive types). |
| 564 | * |
| 565 | * Returns a newly-allocated buffer full of RefTypeId values. |
| 566 | */ |
| 567 | void dvmDbgGetClassList(u4* pNumClasses, RefTypeId** pClassRefBuf) |
| 568 | { |
| 569 | RefTypeId* pRefType; |
| 570 | |
| 571 | dvmHashTableLock(gDvm.loadedClasses); |
| 572 | *pNumClasses = dvmHashTableNumEntries(gDvm.loadedClasses); |
| 573 | pRefType = *pClassRefBuf = malloc(sizeof(RefTypeId) * *pNumClasses); |
| 574 | |
| 575 | if (dvmHashForeach(gDvm.loadedClasses, copyRefType, &pRefType) != 0) { |
| 576 | LOGW("Warning: problem getting class list\n"); |
| 577 | /* not really expecting this to happen */ |
| 578 | } else { |
| 579 | assert(pRefType - *pClassRefBuf == (int) *pNumClasses); |
| 580 | } |
| 581 | |
| 582 | dvmHashTableUnlock(gDvm.loadedClasses); |
| 583 | } |
| 584 | |
| 585 | /* |
| 586 | * Get the list of reference classes "visible" to the specified class |
| 587 | * loader. A class is visible to a class loader if the ClassLoader object |
| 588 | * is the defining loader or is listed as an initiating loader. |
| 589 | * |
| 590 | * Returns a newly-allocated buffer full of RefTypeId values. |
| 591 | */ |
| 592 | void dvmDbgGetVisibleClassList(ObjectId classLoaderId, u4* pNumClasses, |
| 593 | RefTypeId** pClassRefBuf) |
| 594 | { |
| 595 | Object* classLoader; |
| 596 | int numClasses = 0, maxClasses; |
| 597 | |
| 598 | classLoader = objectIdToObject(classLoaderId); |
| 599 | // I don't think classLoader can be NULL, but the spec doesn't say |
| 600 | |
| 601 | LOGVV("GetVisibleList: comparing to %p\n", classLoader); |
| 602 | |
| 603 | dvmHashTableLock(gDvm.loadedClasses); |
| 604 | |
| 605 | /* over-allocate the return buffer */ |
| 606 | maxClasses = dvmHashTableNumEntries(gDvm.loadedClasses); |
| 607 | *pClassRefBuf = malloc(sizeof(RefTypeId) * maxClasses); |
| 608 | |
| 609 | /* |
| 610 | * Run through the list, looking for matches. |
| 611 | */ |
| 612 | HashIter iter; |
| 613 | for (dvmHashIterBegin(gDvm.loadedClasses, &iter); !dvmHashIterDone(&iter); |
| 614 | dvmHashIterNext(&iter)) |
| 615 | { |
| 616 | ClassObject* clazz = (ClassObject*) dvmHashIterData(&iter); |
| 617 | |
| 618 | if (clazz->classLoader == classLoader || |
| 619 | dvmLoaderInInitiatingList(clazz, classLoader)) |
| 620 | { |
| 621 | LOGVV(" match '%s'\n", clazz->descriptor); |
| 622 | (*pClassRefBuf)[numClasses++] = classObjectToRefTypeId(clazz); |
| 623 | } |
| 624 | } |
| 625 | *pNumClasses = numClasses; |
| 626 | |
| 627 | dvmHashTableUnlock(gDvm.loadedClasses); |
| 628 | } |
| 629 | |
| 630 | /* |
| 631 | * Generate the "JNI signature" for a class, e.g. "Ljava/lang/String;". |
| 632 | * |
| 633 | * Our class descriptors are in the correct format, so we just copy that. |
| 634 | * TODO: figure out if we can avoid the copy now that we're using |
| 635 | * descriptors instead of unadorned class names. |
| 636 | * |
| 637 | * Returns a newly-allocated string. |
| 638 | */ |
| 639 | static char* generateJNISignature(ClassObject* clazz) |
| 640 | { |
| 641 | return strdup(clazz->descriptor); |
| 642 | } |
| 643 | |
| 644 | /* |
| 645 | * Get information about a class. |
| 646 | * |
| 647 | * If "pSignature" is not NULL, *pSignature gets the "JNI signature" of |
| 648 | * the class. |
| 649 | */ |
| 650 | void dvmDbgGetClassInfo(RefTypeId classId, u1* pTypeTag, u4* pStatus, |
| 651 | char** pSignature) |
| 652 | { |
| 653 | ClassObject* clazz = refTypeIdToClassObject(classId); |
| 654 | |
| 655 | if (clazz->descriptor[0] == '[') { |
| 656 | /* generated array class */ |
| 657 | *pStatus = CS_VERIFIED | CS_PREPARED; |
| 658 | *pTypeTag = TT_ARRAY; |
| 659 | } else { |
| 660 | if (clazz->status == CLASS_ERROR) |
| 661 | *pStatus = CS_ERROR; |
| 662 | else |
| 663 | *pStatus = CS_VERIFIED | CS_PREPARED | CS_INITIALIZED; |
| 664 | if (dvmIsInterfaceClass(clazz)) |
| 665 | *pTypeTag = TT_INTERFACE; |
| 666 | else |
| 667 | *pTypeTag = TT_CLASS; |
| 668 | } |
| 669 | if (pSignature != NULL) |
| 670 | *pSignature = generateJNISignature(clazz); |
| 671 | } |
| 672 | |
| 673 | /* |
| 674 | * Search the list of loaded classes for a match. |
| 675 | */ |
| 676 | bool dvmDbgFindLoadedClassBySignature(const char* classDescriptor, |
| 677 | RefTypeId* pRefTypeId) |
| 678 | { |
| 679 | ClassObject* clazz; |
| 680 | |
| 681 | clazz = dvmFindLoadedClass(classDescriptor); |
| 682 | if (clazz != NULL) { |
| 683 | *pRefTypeId = classObjectToRefTypeId(clazz); |
| 684 | return true; |
| 685 | } else |
| 686 | return false; |
| 687 | } |
| 688 | |
| 689 | |
| 690 | /* |
| 691 | * Get an object's class and "type tag". |
| 692 | */ |
| 693 | void dvmDbgGetObjectType(ObjectId objectId, u1* pRefTypeTag, |
| 694 | RefTypeId* pRefTypeId) |
| 695 | { |
| 696 | Object* obj = objectIdToObject(objectId); |
| 697 | |
| 698 | if (dvmIsArrayClass(obj->clazz)) |
| 699 | *pRefTypeTag = TT_ARRAY; |
| 700 | else if (dvmIsInterfaceClass(obj->clazz)) |
| 701 | *pRefTypeTag = TT_INTERFACE; |
| 702 | else |
| 703 | *pRefTypeTag = TT_CLASS; |
| 704 | *pRefTypeId = classObjectToRefTypeId(obj->clazz); |
| 705 | } |
| 706 | |
| 707 | /* |
| 708 | * Get a class object's "type tag". |
| 709 | */ |
| 710 | u1 dvmDbgGetClassObjectType(RefTypeId refTypeId) |
| 711 | { |
| 712 | ClassObject* clazz = refTypeIdToClassObject(refTypeId); |
| 713 | |
| 714 | if (dvmIsArrayClass(clazz)) |
| 715 | return TT_ARRAY; |
| 716 | else if (dvmIsInterfaceClass(clazz)) |
| 717 | return TT_INTERFACE; |
| 718 | else |
| 719 | return TT_CLASS; |
| 720 | } |
| 721 | |
| 722 | /* |
| 723 | * Get a class' signature. |
| 724 | * |
| 725 | * Returns a newly-allocated string. |
| 726 | */ |
| 727 | char* dvmDbgGetSignature(RefTypeId refTypeId) |
| 728 | { |
| 729 | ClassObject* clazz; |
| 730 | |
| 731 | clazz = refTypeIdToClassObject(refTypeId); |
| 732 | assert(clazz != NULL); |
| 733 | |
| 734 | return generateJNISignature(clazz); |
| 735 | } |
| 736 | |
| 737 | /* |
| 738 | * Get class' source file. |
| 739 | * |
| 740 | * Returns a newly-allocated string. |
| 741 | */ |
| 742 | const char* dvmDbgGetSourceFile(RefTypeId refTypeId) |
| 743 | { |
| 744 | ClassObject* clazz; |
| 745 | |
| 746 | clazz = refTypeIdToClassObject(refTypeId); |
| 747 | assert(clazz != NULL); |
| 748 | |
| 749 | return clazz->sourceFile; |
| 750 | } |
| 751 | |
| 752 | /* |
| 753 | * Get an object's type name. Converted to a "JNI signature". |
| 754 | * |
| 755 | * Returns a newly-allocated string. |
| 756 | */ |
| 757 | char* dvmDbgGetObjectTypeName(ObjectId objectId) |
| 758 | { |
| 759 | Object* obj = objectIdToObject(objectId); |
| 760 | |
| 761 | assert(obj != NULL); |
| 762 | |
| 763 | return generateJNISignature(obj->clazz); |
| 764 | } |
| 765 | |
| 766 | /* |
| 767 | * Given a type signature (e.g. "Ljava/lang/String;"), return the JDWP |
| 768 | * "type tag". |
| 769 | * |
| 770 | * In many cases this is necessary but not sufficient. For example, if |
| 771 | * we have a NULL String object, we want to return JT_STRING. If we have |
| 772 | * a java/lang/Object that holds a String reference, we also want to |
| 773 | * return JT_STRING. See dvmDbgGetObjectTag(). |
| 774 | */ |
| 775 | int dvmDbgGetSignatureTag(const char* type) |
| 776 | { |
| 777 | /* |
| 778 | * We're not checking the class loader here (to guarantee that JT_STRING |
| 779 | * is truly the one and only String), but it probably doesn't matter |
| 780 | * for our purposes. |
| 781 | */ |
| 782 | if (strcmp(type, "Ljava/lang/String;") == 0) |
| 783 | return JT_STRING; |
| 784 | else if (strcmp(type, "Ljava/lang/Class;") == 0) |
| 785 | return JT_CLASS_OBJECT; |
| 786 | else if (strcmp(type, "Ljava/lang/Thread;") == 0) |
| 787 | return JT_THREAD; |
| 788 | else if (strcmp(type, "Ljava/lang/ThreadGroup;") == 0) |
| 789 | return JT_THREAD_GROUP; |
| 790 | else if (strcmp(type, "Ljava/lang/ClassLoader;") == 0) |
| 791 | return JT_CLASS_LOADER; |
| 792 | |
| 793 | switch (type[0]) { |
| 794 | case '[': return JT_ARRAY; |
| 795 | case 'B': return JT_BYTE; |
| 796 | case 'C': return JT_CHAR; |
| 797 | case 'L': return JT_OBJECT; |
| 798 | case 'F': return JT_FLOAT; |
| 799 | case 'D': return JT_DOUBLE; |
| 800 | case 'I': return JT_INT; |
| 801 | case 'J': return JT_LONG; |
| 802 | case 'S': return JT_SHORT; |
| 803 | case 'V': return JT_VOID; |
| 804 | case 'Z': return JT_BOOLEAN; |
| 805 | default: |
| 806 | LOGE("ERROR: unhandled type '%s'\n", type); |
| 807 | assert(false); |
| 808 | return -1; |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | /* |
| 813 | * Methods declared to return Object might actually be returning one |
| 814 | * of the "refined types". We need to check the object explicitly. |
| 815 | */ |
| 816 | static u1 resultTagFromObject(Object* obj) |
| 817 | { |
| 818 | ClassObject* clazz; |
| 819 | |
| 820 | if (obj == NULL) |
| 821 | return JT_OBJECT; |
| 822 | |
| 823 | clazz = obj->clazz; |
| 824 | |
| 825 | /* |
| 826 | * Comparing against the known classes is faster than string |
| 827 | * comparisons. It ensures that we only find the classes in the |
| 828 | * bootstrap class loader, which may or may not be what we want. |
| 829 | */ |
| 830 | if (clazz == gDvm.classJavaLangString) |
| 831 | return JT_STRING; |
| 832 | else if (clazz == gDvm.classJavaLangClass) |
| 833 | return JT_CLASS_OBJECT; |
| 834 | else if (clazz == gDvm.classJavaLangThread) |
| 835 | return JT_THREAD; |
| 836 | else if (clazz == gDvm.classJavaLangThreadGroup) |
| 837 | return JT_THREAD_GROUP; |
| 838 | else if (strcmp(clazz->descriptor, "Ljava/lang/ClassLoader;") == 0) |
| 839 | return JT_CLASS_LOADER; |
| 840 | else if (clazz->descriptor[0] == '[') |
| 841 | return JT_ARRAY; |
| 842 | else |
| 843 | return JT_OBJECT; |
| 844 | } |
| 845 | |
| 846 | /* |
| 847 | * Determine the tag for an object with a known type. |
| 848 | */ |
| 849 | int dvmDbgGetObjectTag(ObjectId objectId, const char* type) |
| 850 | { |
| 851 | u1 tag; |
| 852 | |
| 853 | tag = dvmDbgGetSignatureTag(type); |
| 854 | if (tag == JT_OBJECT && objectId != 0) |
| 855 | tag = resultTagFromObject(objectIdToObject(objectId)); |
| 856 | |
| 857 | return tag; |
| 858 | } |
| 859 | |
| 860 | /* |
| 861 | * Get the widths of the specified JDWP.Tag value. |
| 862 | */ |
| 863 | int dvmDbgGetTagWidth(int tag) |
| 864 | { |
| 865 | switch (tag) { |
| 866 | case JT_VOID: |
| 867 | return 0; |
| 868 | case JT_BYTE: |
| 869 | case JT_BOOLEAN: |
| 870 | return 1; |
| 871 | case JT_CHAR: |
| 872 | case JT_SHORT: |
| 873 | return 2; |
| 874 | case JT_FLOAT: |
| 875 | case JT_INT: |
| 876 | return 4; |
| 877 | case JT_ARRAY: |
| 878 | case JT_OBJECT: |
| 879 | case JT_STRING: |
| 880 | case JT_THREAD: |
| 881 | case JT_THREAD_GROUP: |
| 882 | case JT_CLASS_LOADER: |
| 883 | case JT_CLASS_OBJECT: |
| 884 | return sizeof(ObjectId); |
| 885 | case JT_DOUBLE: |
| 886 | case JT_LONG: |
| 887 | return 8; |
| 888 | default: |
| 889 | LOGE("ERROR: unhandled tag '%c'\n", tag); |
| 890 | assert(false); |
| 891 | return -1; |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | /* |
| 896 | * Determine whether or not a tag represents a primitive type. |
| 897 | */ |
| 898 | static bool isTagPrimitive(u1 tag) |
| 899 | { |
| 900 | switch (tag) { |
| 901 | case JT_BYTE: |
| 902 | case JT_CHAR: |
| 903 | case JT_FLOAT: |
| 904 | case JT_DOUBLE: |
| 905 | case JT_INT: |
| 906 | case JT_LONG: |
| 907 | case JT_SHORT: |
| 908 | case JT_VOID: |
| 909 | case JT_BOOLEAN: |
| 910 | return true; |
| 911 | case JT_ARRAY: |
| 912 | case JT_OBJECT: |
| 913 | case JT_STRING: |
| 914 | case JT_CLASS_OBJECT: |
| 915 | case JT_THREAD: |
| 916 | case JT_THREAD_GROUP: |
| 917 | case JT_CLASS_LOADER: |
| 918 | return false; |
| 919 | default: |
| 920 | LOGE("ERROR: unhandled tag '%c'\n", tag); |
| 921 | assert(false); |
| 922 | return false; |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | |
| 927 | /* |
| 928 | * Return the length of the specified array. |
| 929 | */ |
| 930 | int dvmDbgGetArrayLength(ObjectId arrayId) |
| 931 | { |
| 932 | ArrayObject* arrayObj = (ArrayObject*) objectIdToObject(arrayId); |
| 933 | assert(dvmIsArray(arrayObj)); |
| 934 | return arrayObj->length; |
| 935 | } |
| 936 | |
| 937 | /* |
| 938 | * Return a tag indicating the general type of elements in the array. |
| 939 | */ |
| 940 | int dvmDbgGetArrayElementTag(ObjectId arrayId) |
| 941 | { |
| 942 | ArrayObject* arrayObj = (ArrayObject*) objectIdToObject(arrayId); |
| 943 | |
| 944 | assert(dvmIsArray(arrayObj)); |
| 945 | |
| 946 | return dvmDbgGetSignatureTag(arrayObj->obj.clazz->descriptor + 1); |
| 947 | } |
| 948 | |
| 949 | /* |
| 950 | * Copy a series of values with the specified width, changing the byte |
| 951 | * ordering to big-endian. |
| 952 | */ |
| 953 | static void copyValuesToBE(u1* out, const u1* in, int count, int width) |
| 954 | { |
| 955 | int i; |
| 956 | |
| 957 | switch (width) { |
| 958 | case 1: |
| 959 | memcpy(out, in, count); |
| 960 | break; |
| 961 | case 2: |
| 962 | for (i = 0; i < count; i++) |
| 963 | *(((u2*) out)+i) = get2BE(in + i*2); |
| 964 | break; |
| 965 | case 4: |
| 966 | for (i = 0; i < count; i++) |
| 967 | *(((u4*) out)+i) = get4BE(in + i*4); |
| 968 | break; |
| 969 | case 8: |
| 970 | for (i = 0; i < count; i++) |
| 971 | *(((u8*) out)+i) = get8BE(in + i*8); |
| 972 | break; |
| 973 | default: |
| 974 | assert(false); |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | /* |
| 979 | * Copy a series of values with the specified with, changing the |
| 980 | * byte order from big-endian. |
| 981 | */ |
| 982 | static void copyValuesFromBE(u1* out, const u1* in, int count, int width) |
| 983 | { |
| 984 | int i; |
| 985 | |
| 986 | switch (width) { |
| 987 | case 1: |
| 988 | memcpy(out, in, count); |
| 989 | break; |
| 990 | case 2: |
| 991 | for (i = 0; i < count; i++) |
| 992 | set2BE(out + i*2, *((u2*)in + i)); |
| 993 | break; |
| 994 | case 4: |
| 995 | for (i = 0; i < count; i++) |
| 996 | set4BE(out + i*4, *((u4*)in + i)); |
| 997 | break; |
| 998 | case 8: |
| 999 | for (i = 0; i < count; i++) |
| 1000 | set8BE(out + i*8, *((u8*)in + i)); |
| 1001 | break; |
| 1002 | default: |
| 1003 | assert(false); |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | /* |
| 1008 | * Output a piece of an array to the reply buffer. |
| 1009 | * |
| 1010 | * Returns "false" if something looks fishy. |
| 1011 | */ |
| 1012 | bool dvmDbgOutputArray(ObjectId arrayId, int firstIndex, int count, |
| 1013 | ExpandBuf* pReply) |
| 1014 | { |
| 1015 | ArrayObject* arrayObj = (ArrayObject*) objectIdToObject(arrayId); |
| 1016 | const u1* data = (const u1*)arrayObj->contents; |
| 1017 | u1 tag; |
| 1018 | |
| 1019 | assert(dvmIsArray(arrayObj)); |
| 1020 | |
| 1021 | if (firstIndex + count > (int)arrayObj->length) { |
| 1022 | LOGW("Request for index=%d + count=%d excceds length=%d\n", |
| 1023 | firstIndex, count, arrayObj->length); |
| 1024 | return false; |
| 1025 | } |
| 1026 | |
| 1027 | tag = dvmDbgGetSignatureTag(arrayObj->obj.clazz->descriptor + 1); |
| 1028 | |
| 1029 | if (isTagPrimitive(tag)) { |
| 1030 | int width = dvmDbgGetTagWidth(tag); |
| 1031 | u1* outBuf; |
| 1032 | |
| 1033 | outBuf = expandBufAddSpace(pReply, count * width); |
| 1034 | |
| 1035 | copyValuesToBE(outBuf, data + firstIndex*width, count, width); |
| 1036 | } else { |
| 1037 | Object** pObjects; |
| 1038 | int i; |
| 1039 | |
| 1040 | pObjects = (Object**) data; |
| 1041 | pObjects += firstIndex; |
| 1042 | |
| 1043 | LOGV(" --> copying %d object IDs\n", count); |
| 1044 | //assert(tag == JT_OBJECT); // could be object or "refined" type |
| 1045 | |
| 1046 | for (i = 0; i < count; i++, pObjects++) { |
| 1047 | u1 thisTag; |
| 1048 | if (*pObjects != NULL) |
| 1049 | thisTag = resultTagFromObject(*pObjects); |
| 1050 | else |
| 1051 | thisTag = tag; |
| 1052 | expandBufAdd1(pReply, thisTag); |
| 1053 | expandBufAddObjectId(pReply, objectToObjectId(*pObjects)); |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | return true; |
| 1058 | } |
| 1059 | |
| 1060 | /* |
| 1061 | * Set a range of elements in an array from the data in "buf". |
| 1062 | */ |
| 1063 | bool dvmDbgSetArrayElements(ObjectId arrayId, int firstIndex, int count, |
| 1064 | const u1* buf) |
| 1065 | { |
| 1066 | ArrayObject* arrayObj = (ArrayObject*) objectIdToObject(arrayId); |
| 1067 | u1* data = (u1*)arrayObj->contents; |
| 1068 | u1 tag; |
| 1069 | |
| 1070 | assert(dvmIsArray(arrayObj)); |
| 1071 | |
| 1072 | if (firstIndex + count > (int)arrayObj->length) { |
| 1073 | LOGW("Attempt to set index=%d + count=%d excceds length=%d\n", |
| 1074 | firstIndex, count, arrayObj->length); |
| 1075 | return false; |
| 1076 | } |
| 1077 | |
| 1078 | tag = dvmDbgGetSignatureTag(arrayObj->obj.clazz->descriptor + 1); |
| 1079 | |
| 1080 | if (isTagPrimitive(tag)) { |
| 1081 | int width = dvmDbgGetTagWidth(tag); |
| 1082 | |
| 1083 | LOGV(" --> setting %d '%c' width=%d\n", count, tag, width); |
| 1084 | |
| 1085 | copyValuesFromBE(data + firstIndex*width, buf, count, width); |
| 1086 | } else { |
| 1087 | Object** pObjects; |
| 1088 | int i; |
| 1089 | |
| 1090 | pObjects = (Object**) data; |
| 1091 | pObjects += firstIndex; |
| 1092 | |
| 1093 | LOGV(" --> setting %d objects", count); |
| 1094 | |
| 1095 | /* should do array type check here */ |
| 1096 | for (i = 0; i < count; i++) { |
| 1097 | ObjectId id = dvmReadObjectId(&buf); |
| 1098 | *pObjects++ = objectIdToObject(id); |
| 1099 | } |
| 1100 | } |
| 1101 | |
| 1102 | return true; |
| 1103 | } |
| 1104 | |
| 1105 | /* |
| 1106 | * Create a new string. |
| 1107 | * |
| 1108 | * The only place the reference will be held in the VM is in our registry. |
| 1109 | */ |
| 1110 | ObjectId dvmDbgCreateString(const char* str) |
| 1111 | { |
| 1112 | StringObject* strObj; |
| 1113 | |
| 1114 | strObj = dvmCreateStringFromCstr(str, ALLOC_DEFAULT); |
| 1115 | dvmReleaseTrackedAlloc((Object*) strObj, NULL); |
| 1116 | return objectToObjectId((Object*) strObj); |
| 1117 | } |
| 1118 | |
| 1119 | /* |
| 1120 | * Determine if "instClassId" is an instance of "classId". |
| 1121 | */ |
| 1122 | bool dvmDbgMatchType(RefTypeId instClassId, RefTypeId classId) |
| 1123 | { |
| 1124 | ClassObject* instClazz = refTypeIdToClassObject(instClassId); |
| 1125 | ClassObject* clazz = refTypeIdToClassObject(classId); |
| 1126 | |
| 1127 | return dvmInstanceof(instClazz, clazz); |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | /* |
| 1132 | * =========================================================================== |
| 1133 | * Method and Field |
| 1134 | * =========================================================================== |
| 1135 | */ |
| 1136 | |
| 1137 | /* |
| 1138 | * Get the method name from a MethodId. |
| 1139 | */ |
| 1140 | const char* dvmDbgGetMethodName(RefTypeId refTypeId, MethodId id) |
| 1141 | { |
| 1142 | Method* meth; |
| 1143 | |
| 1144 | meth = methodIdToMethod(refTypeId, id); |
| 1145 | return meth->name; |
| 1146 | } |
| 1147 | |
| 1148 | /* |
| 1149 | * For ReferenceType.Fields and ReferenceType.FieldsWithGeneric: |
| 1150 | * output all fields declared by the class. Inerhited fields are |
| 1151 | * not included. |
| 1152 | */ |
| 1153 | void dvmDbgOutputAllFields(RefTypeId refTypeId, bool withGeneric, |
| 1154 | ExpandBuf* pReply) |
| 1155 | { |
| 1156 | static const u1 genericSignature[1] = ""; |
| 1157 | ClassObject* clazz; |
| 1158 | Field* field; |
| 1159 | u4 declared; |
| 1160 | int i; |
| 1161 | |
| 1162 | clazz = refTypeIdToClassObject(refTypeId); |
| 1163 | assert(clazz != NULL); |
| 1164 | |
| 1165 | declared = clazz->sfieldCount + clazz->ifieldCount; |
| 1166 | expandBufAdd4BE(pReply, declared); |
| 1167 | |
| 1168 | for (i = 0; i < clazz->sfieldCount; i++) { |
| 1169 | field = (Field*) &clazz->sfields[i]; |
| 1170 | |
| 1171 | expandBufAddFieldId(pReply, fieldToFieldId(field)); |
| 1172 | expandBufAddUtf8String(pReply, (const u1*) field->name); |
| 1173 | expandBufAddUtf8String(pReply, (const u1*) field->signature); |
| 1174 | if (withGeneric) |
| 1175 | expandBufAddUtf8String(pReply, genericSignature); |
| 1176 | expandBufAdd4BE(pReply, field->accessFlags); |
| 1177 | } |
| 1178 | for (i = 0; i < clazz->ifieldCount; i++) { |
| 1179 | field = (Field*) &clazz->ifields[i]; |
| 1180 | |
| 1181 | expandBufAddFieldId(pReply, fieldToFieldId(field)); |
| 1182 | expandBufAddUtf8String(pReply, (const u1*) field->name); |
| 1183 | expandBufAddUtf8String(pReply, (const u1*) field->signature); |
| 1184 | if (withGeneric) |
| 1185 | expandBufAddUtf8String(pReply, genericSignature); |
| 1186 | expandBufAdd4BE(pReply, field->accessFlags); |
| 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | /* |
| 1191 | * For ReferenceType.Methods and ReferenceType.MethodsWithGeneric: |
| 1192 | * output all methods declared by the class. Inherited methods are |
| 1193 | * not included. |
| 1194 | */ |
| 1195 | void dvmDbgOutputAllMethods(RefTypeId refTypeId, bool withGeneric, |
| 1196 | ExpandBuf* pReply) |
| 1197 | { |
| 1198 | DexStringCache stringCache; |
| 1199 | static const u1 genericSignature[1] = ""; |
| 1200 | ClassObject* clazz; |
| 1201 | Method* meth; |
| 1202 | u4 declared; |
| 1203 | int i; |
| 1204 | |
| 1205 | dexStringCacheInit(&stringCache); |
| 1206 | |
| 1207 | clazz = refTypeIdToClassObject(refTypeId); |
| 1208 | assert(clazz != NULL); |
| 1209 | |
| 1210 | declared = clazz->directMethodCount + clazz->virtualMethodCount; |
| 1211 | expandBufAdd4BE(pReply, declared); |
| 1212 | |
| 1213 | for (i = 0; i < clazz->directMethodCount; i++) { |
| 1214 | meth = &clazz->directMethods[i]; |
| 1215 | |
| 1216 | expandBufAddMethodId(pReply, methodToMethodId(meth)); |
| 1217 | expandBufAddUtf8String(pReply, (const u1*) meth->name); |
| 1218 | |
| 1219 | expandBufAddUtf8String(pReply, |
| 1220 | (const u1*) dexProtoGetMethodDescriptor(&meth->prototype, |
| 1221 | &stringCache)); |
| 1222 | |
| 1223 | if (withGeneric) |
| 1224 | expandBufAddUtf8String(pReply, genericSignature); |
| 1225 | expandBufAdd4BE(pReply, meth->accessFlags); |
| 1226 | } |
| 1227 | for (i = 0; i < clazz->virtualMethodCount; i++) { |
| 1228 | meth = &clazz->virtualMethods[i]; |
| 1229 | |
| 1230 | expandBufAddMethodId(pReply, methodToMethodId(meth)); |
| 1231 | expandBufAddUtf8String(pReply, (const u1*) meth->name); |
| 1232 | |
| 1233 | expandBufAddUtf8String(pReply, |
| 1234 | (const u1*) dexProtoGetMethodDescriptor(&meth->prototype, |
| 1235 | &stringCache)); |
| 1236 | |
| 1237 | if (withGeneric) |
| 1238 | expandBufAddUtf8String(pReply, genericSignature); |
| 1239 | expandBufAdd4BE(pReply, meth->accessFlags); |
| 1240 | } |
| 1241 | |
| 1242 | dexStringCacheRelease(&stringCache); |
| 1243 | } |
| 1244 | |
| 1245 | /* |
| 1246 | * Output all interfaces directly implemented by the class. |
| 1247 | */ |
| 1248 | void dvmDbgOutputAllInterfaces(RefTypeId refTypeId, ExpandBuf* pReply) |
| 1249 | { |
| 1250 | ClassObject* clazz; |
| 1251 | int i, start, count; |
| 1252 | |
| 1253 | clazz = refTypeIdToClassObject(refTypeId); |
| 1254 | assert(clazz != NULL); |
| 1255 | |
| 1256 | if (clazz->super == NULL) |
| 1257 | start = 0; |
| 1258 | else |
| 1259 | start = clazz->super->iftableCount; |
| 1260 | |
| 1261 | count = clazz->iftableCount - start; |
| 1262 | expandBufAdd4BE(pReply, count); |
| 1263 | for (i = start; i < clazz->iftableCount; i++) { |
| 1264 | ClassObject* iface = clazz->iftable[i].clazz; |
| 1265 | expandBufAddRefTypeId(pReply, classObjectToRefTypeId(iface)); |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | typedef struct DebugCallbackContext { |
| 1270 | int numItems; |
| 1271 | ExpandBuf* pReply; |
| 1272 | // used by locals table |
| 1273 | bool withGeneric; |
| 1274 | } DebugCallbackContext; |
| 1275 | |
| 1276 | static int lineTablePositionsCb(void *cnxt, u4 address, u4 lineNum) |
| 1277 | { |
| 1278 | DebugCallbackContext *pContext = (DebugCallbackContext *)cnxt; |
| 1279 | |
| 1280 | expandBufAdd8BE(pContext->pReply, address); |
| 1281 | expandBufAdd4BE(pContext->pReply, lineNum); |
| 1282 | pContext->numItems++; |
| 1283 | |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | /* |
| 1288 | * For Method.LineTable: output the line table. |
| 1289 | * |
| 1290 | * Note we operate in Dalvik's 16-bit units rather than bytes. |
| 1291 | */ |
| 1292 | void dvmDbgOutputLineTable(RefTypeId refTypeId, MethodId methodId, |
| 1293 | ExpandBuf* pReply) |
| 1294 | { |
| 1295 | Method* method; |
| 1296 | u8 start, end; |
| 1297 | int i; |
| 1298 | DebugCallbackContext context; |
| 1299 | |
| 1300 | memset (&context, 0, sizeof(DebugCallbackContext)); |
| 1301 | |
| 1302 | method = methodIdToMethod(refTypeId, methodId); |
| 1303 | if (dvmIsNativeMethod(method)) { |
| 1304 | start = (u8) -1; |
| 1305 | end = (u8) -1; |
| 1306 | } else { |
| 1307 | start = 0; |
| 1308 | end = dvmGetMethodInsnsSize(method); |
| 1309 | } |
| 1310 | |
| 1311 | expandBufAdd8BE(pReply, start); |
| 1312 | expandBufAdd8BE(pReply, end); |
| 1313 | |
| 1314 | // Add numLines later |
| 1315 | size_t numLinesOffset = expandBufGetLength(pReply); |
| 1316 | expandBufAdd4BE(pReply, 0); |
| 1317 | |
| 1318 | context.pReply = pReply; |
| 1319 | |
| 1320 | dexDecodeDebugInfo(method->clazz->pDvmDex->pDexFile, |
| 1321 | dvmGetMethodCode(method), |
| 1322 | method->clazz->descriptor, |
| 1323 | method->prototype.protoIdx, |
| 1324 | method->accessFlags, |
| 1325 | lineTablePositionsCb, NULL, &context); |
| 1326 | |
| 1327 | set4BE(expandBufGetBuffer(pReply) + numLinesOffset, context.numItems); |
| 1328 | } |
| 1329 | |
| 1330 | /* |
| 1331 | * Eclipse appears to expect that the "this" reference is in slot zero. |
| 1332 | * If it's not, the "variables" display will show two copies of "this", |
| 1333 | * possibly because it gets "this" from SF.ThisObject and then displays |
| 1334 | * all locals with nonzero slot numbers. |
| 1335 | * |
| 1336 | * So, we remap the item in slot 0 to 1000, and remap "this" to zero. On |
| 1337 | * SF.GetValues / SF.SetValues we map them back. |
| 1338 | */ |
| 1339 | static int tweakSlot(int slot, const char* name) |
| 1340 | { |
| 1341 | int newSlot = slot; |
| 1342 | |
| 1343 | if (strcmp(name, "this") == 0) // only remap "this" ptr |
| 1344 | newSlot = 0; |
| 1345 | else if (slot == 0) // always remap slot 0 |
| 1346 | newSlot = kSlot0Sub; |
| 1347 | |
| 1348 | LOGV("untweak: %d to %d\n", slot, newSlot); |
| 1349 | return newSlot; |
| 1350 | } |
| 1351 | |
| 1352 | /* |
| 1353 | * Reverse Eclipse hack. |
| 1354 | */ |
| 1355 | static int untweakSlot(int slot, const void* framePtr) |
| 1356 | { |
| 1357 | int newSlot = slot; |
| 1358 | |
| 1359 | if (slot == kSlot0Sub) { |
| 1360 | newSlot = 0; |
| 1361 | } else if (slot == 0) { |
| 1362 | const StackSaveArea* saveArea = SAVEAREA_FROM_FP(framePtr); |
| 1363 | const Method* method = saveArea->method; |
| 1364 | newSlot = method->registersSize - method->insSize; |
| 1365 | } |
| 1366 | |
| 1367 | LOGV("untweak: %d to %d\n", slot, newSlot); |
| 1368 | return newSlot; |
| 1369 | } |
| 1370 | |
| 1371 | static void variableTableCb (void *cnxt, u2 reg, u4 startAddress, |
| 1372 | u4 endAddress, const char *name, const char *descriptor, |
| 1373 | const char *signature) |
| 1374 | { |
| 1375 | DebugCallbackContext *pContext = (DebugCallbackContext *)cnxt; |
| 1376 | |
| 1377 | reg = (u2) tweakSlot(reg, name); |
| 1378 | |
| 1379 | LOGV(" %2d: %d(%d) '%s' '%s' slot=%d\n", |
| 1380 | pContext->numItems, startAddress, endAddress - startAddress, |
| 1381 | name, descriptor, reg); |
| 1382 | |
| 1383 | expandBufAdd8BE(pContext->pReply, startAddress); |
| 1384 | expandBufAddUtf8String(pContext->pReply, (const u1*)name); |
| 1385 | expandBufAddUtf8String(pContext->pReply, (const u1*)descriptor); |
| 1386 | if (pContext->withGeneric) { |
| 1387 | expandBufAddUtf8String(pContext->pReply, (const u1*) signature); |
| 1388 | } |
| 1389 | expandBufAdd4BE(pContext->pReply, endAddress - startAddress); |
| 1390 | expandBufAdd4BE(pContext->pReply, reg); |
| 1391 | |
| 1392 | pContext->numItems++; |
| 1393 | } |
| 1394 | |
| 1395 | /* |
| 1396 | * For Method.VariableTable[WithGeneric]: output information about local |
| 1397 | * variables for the specified method. |
| 1398 | */ |
| 1399 | void dvmDbgOutputVariableTable(RefTypeId refTypeId, MethodId methodId, |
| 1400 | bool withGeneric, ExpandBuf* pReply) |
| 1401 | { |
| 1402 | Method* method; |
| 1403 | DebugCallbackContext context; |
| 1404 | |
| 1405 | memset (&context, 0, sizeof(DebugCallbackContext)); |
| 1406 | |
| 1407 | method = methodIdToMethod(refTypeId, methodId); |
| 1408 | |
| 1409 | expandBufAdd4BE(pReply, method->insSize); |
| 1410 | |
| 1411 | // Add numLocals later |
| 1412 | size_t numLocalsOffset = expandBufGetLength(pReply); |
| 1413 | expandBufAdd4BE(pReply, 0); |
| 1414 | |
| 1415 | context.pReply = pReply; |
| 1416 | context.withGeneric = withGeneric; |
| 1417 | dexDecodeDebugInfo(method->clazz->pDvmDex->pDexFile, |
| 1418 | dvmGetMethodCode(method), |
| 1419 | method->clazz->descriptor, |
| 1420 | method->prototype.protoIdx, |
| 1421 | method->accessFlags, |
| 1422 | NULL, variableTableCb, &context); |
| 1423 | |
| 1424 | set4BE(expandBufGetBuffer(pReply) + numLocalsOffset, context.numItems); |
| 1425 | } |
| 1426 | |
| 1427 | /* |
| 1428 | * Get the type tag for the field's type. |
| 1429 | */ |
| 1430 | int dvmDbgGetFieldTag(ObjectId objId, FieldId fieldId) |
| 1431 | { |
| 1432 | Object* obj = objectIdToObject(objId); |
| 1433 | RefTypeId classId = classObjectToRefTypeId(obj->clazz); |
| 1434 | Field* field = fieldIdToField(classId, fieldId); |
| 1435 | |
| 1436 | return dvmDbgGetSignatureTag(field->signature); |
| 1437 | } |
| 1438 | |
| 1439 | /* |
| 1440 | * Get the type tag for the static field's type. |
| 1441 | */ |
| 1442 | int dvmDbgGetStaticFieldTag(RefTypeId refTypeId, FieldId fieldId) |
| 1443 | { |
| 1444 | Field* field = fieldIdToField(refTypeId, fieldId); |
| 1445 | return dvmDbgGetSignatureTag(field->signature); |
| 1446 | } |
| 1447 | |
| 1448 | /* |
| 1449 | * Copy the value of a field into the specified buffer. |
| 1450 | */ |
| 1451 | void dvmDbgGetFieldValue(ObjectId objectId, FieldId fieldId, u1* buf, |
| 1452 | int expectedLen) |
| 1453 | { |
| 1454 | Object* obj = objectIdToObject(objectId); |
| 1455 | RefTypeId classId = classObjectToRefTypeId(obj->clazz); |
| 1456 | InstField* field = (InstField*) fieldIdToField(classId, fieldId); |
| 1457 | Object* objVal; |
| 1458 | u4 intVal; |
| 1459 | u8 longVal; |
| 1460 | |
| 1461 | switch (field->field.signature[0]) { |
| 1462 | case JT_BOOLEAN: |
| 1463 | assert(expectedLen == 1); |
| 1464 | intVal = dvmGetFieldBoolean(obj, field->byteOffset); |
| 1465 | set1(buf, intVal != 0); |
| 1466 | break; |
| 1467 | case JT_BYTE: |
| 1468 | assert(expectedLen == 1); |
| 1469 | intVal = dvmGetFieldInt(obj, field->byteOffset); |
| 1470 | set1(buf, intVal); |
| 1471 | break; |
| 1472 | case JT_SHORT: |
| 1473 | case JT_CHAR: |
| 1474 | assert(expectedLen == 2); |
| 1475 | intVal = dvmGetFieldInt(obj, field->byteOffset); |
| 1476 | set2BE(buf, intVal); |
| 1477 | break; |
| 1478 | case JT_INT: |
| 1479 | case JT_FLOAT: |
| 1480 | assert(expectedLen == 4); |
| 1481 | intVal = dvmGetFieldInt(obj, field->byteOffset); |
| 1482 | set4BE(buf, intVal); |
| 1483 | break; |
| 1484 | case JT_ARRAY: |
| 1485 | case JT_OBJECT: |
| 1486 | assert(expectedLen == sizeof(ObjectId)); |
| 1487 | objVal = dvmGetFieldObject(obj, field->byteOffset); |
| 1488 | dvmSetObjectId(buf, objectToObjectId(objVal)); |
| 1489 | break; |
| 1490 | case JT_DOUBLE: |
| 1491 | case JT_LONG: |
| 1492 | assert(expectedLen == 8); |
| 1493 | longVal = dvmGetFieldLong(obj, field->byteOffset); |
| 1494 | set8BE(buf, longVal); |
| 1495 | break; |
| 1496 | default: |
| 1497 | LOGE("ERROR: unhandled class type '%s'\n", field->field.signature); |
| 1498 | assert(false); |
| 1499 | break; |
| 1500 | } |
| 1501 | } |
| 1502 | |
| 1503 | /* |
| 1504 | * Set the value of the specified field. |
| 1505 | */ |
| 1506 | void dvmDbgSetFieldValue(ObjectId objectId, FieldId fieldId, u8 value, |
| 1507 | int width) |
| 1508 | { |
| 1509 | Object* obj = objectIdToObject(objectId); |
| 1510 | RefTypeId classId = classObjectToRefTypeId(obj->clazz); |
| 1511 | InstField* field = (InstField*) fieldIdToField(classId, fieldId); |
| 1512 | |
| 1513 | switch (field->field.signature[0]) { |
| 1514 | case JT_BOOLEAN: |
| 1515 | assert(width == 1); |
| 1516 | dvmSetFieldBoolean(obj, field->byteOffset, value != 0); |
| 1517 | break; |
| 1518 | case JT_BYTE: |
| 1519 | assert(width == 1); |
| 1520 | dvmSetFieldInt(obj, field->byteOffset, value); |
| 1521 | break; |
| 1522 | case JT_SHORT: |
| 1523 | case JT_CHAR: |
| 1524 | assert(width == 2); |
| 1525 | dvmSetFieldInt(obj, field->byteOffset, value); |
| 1526 | break; |
| 1527 | case JT_INT: |
| 1528 | case JT_FLOAT: |
| 1529 | assert(width == 4); |
| 1530 | dvmSetFieldInt(obj, field->byteOffset, value); |
| 1531 | break; |
| 1532 | case JT_ARRAY: |
| 1533 | case JT_OBJECT: |
| 1534 | assert(width == sizeof(ObjectId)); |
| 1535 | dvmSetFieldObject(obj, field->byteOffset, objectIdToObject(value)); |
| 1536 | break; |
| 1537 | case JT_DOUBLE: |
| 1538 | case JT_LONG: |
| 1539 | assert(width == 8); |
| 1540 | dvmSetFieldLong(obj, field->byteOffset, value); |
| 1541 | break; |
| 1542 | default: |
| 1543 | LOGE("ERROR: unhandled class type '%s'\n", field->field.signature); |
| 1544 | assert(false); |
| 1545 | break; |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | /* |
| 1550 | * Copy the value of a static field into the specified buffer. |
| 1551 | */ |
| 1552 | void dvmDbgGetStaticFieldValue(RefTypeId refTypeId, FieldId fieldId, u1* buf, |
| 1553 | int expectedLen) |
| 1554 | { |
| 1555 | StaticField* sfield = (StaticField*) fieldIdToField(refTypeId, fieldId); |
| 1556 | Object* objVal; |
| 1557 | JValue value; |
| 1558 | |
| 1559 | switch (sfield->field.signature[0]) { |
| 1560 | case JT_BOOLEAN: |
| 1561 | assert(expectedLen == 1); |
| 1562 | set1(buf, dvmGetStaticFieldBoolean(sfield)); |
| 1563 | break; |
| 1564 | case JT_BYTE: |
| 1565 | assert(expectedLen == 1); |
| 1566 | set1(buf, dvmGetStaticFieldByte(sfield)); |
| 1567 | break; |
| 1568 | case JT_SHORT: |
| 1569 | assert(expectedLen == 2); |
| 1570 | set2BE(buf, dvmGetStaticFieldShort(sfield)); |
| 1571 | break; |
| 1572 | case JT_CHAR: |
| 1573 | assert(expectedLen == 2); |
| 1574 | set2BE(buf, dvmGetStaticFieldChar(sfield)); |
| 1575 | break; |
| 1576 | case JT_INT: |
| 1577 | assert(expectedLen == 4); |
| 1578 | set4BE(buf, dvmGetStaticFieldInt(sfield)); |
| 1579 | break; |
| 1580 | case JT_FLOAT: |
| 1581 | assert(expectedLen == 4); |
| 1582 | value.f = dvmGetStaticFieldFloat(sfield); |
| 1583 | set4BE(buf, value.i); |
| 1584 | break; |
| 1585 | case JT_ARRAY: |
| 1586 | case JT_OBJECT: |
| 1587 | assert(expectedLen == sizeof(ObjectId)); |
| 1588 | objVal = dvmGetStaticFieldObject(sfield); |
| 1589 | dvmSetObjectId(buf, objectToObjectId(objVal)); |
| 1590 | break; |
| 1591 | case JT_LONG: |
| 1592 | assert(expectedLen == 8); |
| 1593 | set8BE(buf, dvmGetStaticFieldLong(sfield)); |
| 1594 | break; |
| 1595 | case JT_DOUBLE: |
| 1596 | assert(expectedLen == 8); |
| 1597 | value.d = dvmGetStaticFieldDouble(sfield); |
| 1598 | set8BE(buf, value.j); |
| 1599 | break; |
| 1600 | default: |
| 1601 | LOGE("ERROR: unhandled class type '%s'\n", sfield->field.signature); |
| 1602 | assert(false); |
| 1603 | break; |
| 1604 | } |
| 1605 | } |
| 1606 | |
| 1607 | /* |
| 1608 | * Set the value of a static field. |
| 1609 | */ |
| 1610 | void dvmDbgSetStaticFieldValue(RefTypeId refTypeId, FieldId fieldId, |
| 1611 | u8 rawValue, int width) |
| 1612 | { |
| 1613 | StaticField* sfield = (StaticField*) fieldIdToField(refTypeId, fieldId); |
| 1614 | Object* objVal; |
| 1615 | JValue value; |
| 1616 | |
| 1617 | value.j = rawValue; |
| 1618 | |
| 1619 | switch (sfield->field.signature[0]) { |
| 1620 | case JT_BOOLEAN: |
| 1621 | assert(width == 1); |
| 1622 | dvmSetStaticFieldBoolean(sfield, value.z); |
| 1623 | break; |
| 1624 | case JT_BYTE: |
| 1625 | assert(width == 1); |
| 1626 | dvmSetStaticFieldByte(sfield, value.b); |
| 1627 | break; |
| 1628 | case JT_SHORT: |
| 1629 | assert(width == 2); |
| 1630 | dvmSetStaticFieldShort(sfield, value.s); |
| 1631 | break; |
| 1632 | case JT_CHAR: |
| 1633 | assert(width == 2); |
| 1634 | dvmSetStaticFieldChar(sfield, value.c); |
| 1635 | break; |
| 1636 | case JT_INT: |
| 1637 | assert(width == 4); |
| 1638 | dvmSetStaticFieldInt(sfield, value.i); |
| 1639 | break; |
| 1640 | case JT_FLOAT: |
| 1641 | assert(width == 4); |
| 1642 | dvmSetStaticFieldFloat(sfield, value.f); |
| 1643 | break; |
| 1644 | case JT_ARRAY: |
| 1645 | case JT_OBJECT: |
| 1646 | assert(width == sizeof(ObjectId)); |
| 1647 | objVal = objectIdToObject(rawValue); |
| 1648 | dvmSetStaticFieldObject(sfield, objVal); |
| 1649 | break; |
| 1650 | case JT_LONG: |
| 1651 | assert(width == 8); |
| 1652 | dvmSetStaticFieldLong(sfield, value.j); |
| 1653 | break; |
| 1654 | case JT_DOUBLE: |
| 1655 | assert(width == 8); |
| 1656 | dvmSetStaticFieldDouble(sfield, value.d); |
| 1657 | break; |
| 1658 | default: |
| 1659 | LOGE("ERROR: unhandled class type '%s'\n", sfield->field.signature); |
| 1660 | assert(false); |
| 1661 | break; |
| 1662 | } |
| 1663 | } |
| 1664 | |
| 1665 | /* |
| 1666 | * Convert a string object to a UTF-8 string. |
| 1667 | * |
| 1668 | * Returns a newly-allocated string. |
| 1669 | */ |
| 1670 | char* dvmDbgStringToUtf8(ObjectId strId) |
| 1671 | { |
| 1672 | StringObject* strObj = (StringObject*) objectIdToObject(strId); |
| 1673 | |
| 1674 | return dvmCreateCstrFromString(strObj); |
| 1675 | } |
| 1676 | |
| 1677 | |
| 1678 | /* |
| 1679 | * =========================================================================== |
| 1680 | * Thread and ThreadGroup |
| 1681 | * =========================================================================== |
| 1682 | */ |
| 1683 | |
| 1684 | /* |
| 1685 | * Convert a thread object to a Thread ptr. |
| 1686 | * |
| 1687 | * This currently requires running through the list of threads and finding |
| 1688 | * a match. |
| 1689 | * |
| 1690 | * IMPORTANT: grab gDvm.threadListLock before calling here. |
| 1691 | */ |
| 1692 | static Thread* threadObjToThread(Object* threadObj) |
| 1693 | { |
| 1694 | Thread* thread; |
| 1695 | |
| 1696 | for (thread = gDvm.threadList; thread != NULL; thread = thread->next) { |
| 1697 | if (thread->threadObj == threadObj) |
| 1698 | break; |
| 1699 | } |
| 1700 | |
| 1701 | return thread; |
| 1702 | } |
| 1703 | |
| 1704 | /* |
| 1705 | * Get the status and suspend state of a thread. |
| 1706 | */ |
| 1707 | bool dvmDbgGetThreadStatus(ObjectId threadId, u4* pThreadStatus, |
| 1708 | u4* pSuspendStatus) |
| 1709 | { |
| 1710 | Object* threadObj; |
| 1711 | Thread* thread; |
| 1712 | bool result = false; |
| 1713 | |
| 1714 | threadObj = objectIdToObject(threadId); |
| 1715 | assert(threadObj != NULL); |
| 1716 | |
| 1717 | /* lock the thread list, so the thread doesn't vanish while we work */ |
| 1718 | dvmLockThreadList(NULL); |
| 1719 | |
| 1720 | thread = threadObjToThread(threadObj); |
| 1721 | if (thread == NULL) |
| 1722 | goto bail; |
| 1723 | |
| 1724 | switch (thread->status) { |
| 1725 | case THREAD_ZOMBIE: *pThreadStatus = TS_ZOMBIE; break; |
| 1726 | case THREAD_RUNNING: *pThreadStatus = TS_RUNNING; break; |
| 1727 | case THREAD_TIMED_WAIT: *pThreadStatus = TS_SLEEPING; break; |
| 1728 | case THREAD_MONITOR: *pThreadStatus = TS_MONITOR; break; |
| 1729 | case THREAD_WAIT: *pThreadStatus = TS_WAIT; break; |
| 1730 | case THREAD_INITIALIZING: *pThreadStatus = TS_ZOMBIE; break; |
| 1731 | case THREAD_STARTING: *pThreadStatus = TS_ZOMBIE; break; |
| 1732 | case THREAD_NATIVE: *pThreadStatus = TS_RUNNING; break; |
| 1733 | case THREAD_VMWAIT: *pThreadStatus = TS_WAIT; break; |
| 1734 | default: |
| 1735 | assert(false); |
| 1736 | *pThreadStatus = THREAD_ZOMBIE; |
| 1737 | break; |
| 1738 | } |
| 1739 | |
| 1740 | if (dvmIsSuspended(thread)) |
| 1741 | *pSuspendStatus = SUSPEND_STATUS_SUSPENDED; |
| 1742 | else |
| 1743 | *pSuspendStatus = 0; |
| 1744 | |
| 1745 | result = true; |
| 1746 | |
| 1747 | bail: |
| 1748 | dvmUnlockThreadList(); |
| 1749 | return result; |
| 1750 | } |
| 1751 | |
| 1752 | /* |
| 1753 | * Get the thread's suspend count. |
| 1754 | */ |
| 1755 | u4 dvmDbgGetThreadSuspendCount(ObjectId threadId) |
| 1756 | { |
| 1757 | Object* threadObj; |
| 1758 | Thread* thread; |
| 1759 | u4 result = 0; |
| 1760 | |
| 1761 | threadObj = objectIdToObject(threadId); |
| 1762 | assert(threadObj != NULL); |
| 1763 | |
| 1764 | /* lock the thread list, so the thread doesn't vanish while we work */ |
| 1765 | dvmLockThreadList(NULL); |
| 1766 | |
| 1767 | thread = threadObjToThread(threadObj); |
| 1768 | if (thread == NULL) |
| 1769 | goto bail; |
| 1770 | |
| 1771 | result = thread->suspendCount; |
| 1772 | |
| 1773 | bail: |
| 1774 | dvmUnlockThreadList(); |
| 1775 | return result; |
| 1776 | } |
| 1777 | |
| 1778 | /* |
| 1779 | * Determine whether or not a thread exists in the VM's thread list. |
| 1780 | * |
| 1781 | * Returns "true" if the thread exists. |
| 1782 | */ |
| 1783 | bool dvmDbgThreadExists(ObjectId threadId) |
| 1784 | { |
| 1785 | Object* threadObj; |
| 1786 | Thread* thread; |
| 1787 | bool result; |
| 1788 | |
| 1789 | threadObj = objectIdToObject(threadId); |
| 1790 | assert(threadObj != NULL); |
| 1791 | |
| 1792 | /* lock the thread list, so the thread doesn't vanish while we work */ |
| 1793 | dvmLockThreadList(NULL); |
| 1794 | |
| 1795 | thread = threadObjToThread(threadObj); |
| 1796 | if (thread == NULL) |
| 1797 | result = false; |
| 1798 | else |
| 1799 | result = true; |
| 1800 | |
| 1801 | dvmUnlockThreadList(); |
| 1802 | return result; |
| 1803 | } |
| 1804 | |
| 1805 | /* |
| 1806 | * Determine whether or not a thread is suspended. |
| 1807 | * |
| 1808 | * Returns "false" if the thread is running or doesn't exist. |
| 1809 | */ |
| 1810 | bool dvmDbgIsSuspended(ObjectId threadId) |
| 1811 | { |
| 1812 | Object* threadObj; |
| 1813 | Thread* thread; |
| 1814 | bool result = false; |
| 1815 | |
| 1816 | threadObj = objectIdToObject(threadId); |
| 1817 | assert(threadObj != NULL); |
| 1818 | |
| 1819 | /* lock the thread list, so the thread doesn't vanish while we work */ |
| 1820 | dvmLockThreadList(NULL); |
| 1821 | |
| 1822 | thread = threadObjToThread(threadObj); |
| 1823 | if (thread == NULL) |
| 1824 | goto bail; |
| 1825 | |
| 1826 | result = dvmIsSuspended(thread); |
| 1827 | |
| 1828 | bail: |
| 1829 | dvmUnlockThreadList(); |
| 1830 | return result; |
| 1831 | } |
| 1832 | |
| 1833 | #if 0 |
| 1834 | /* |
| 1835 | * Wait until a thread suspends. |
| 1836 | * |
| 1837 | * We stray from the usual pattern here, and release the thread list lock |
| 1838 | * before we use the Thread. This is necessary and should be safe in this |
| 1839 | * circumstance; see comments in dvmWaitForSuspend(). |
| 1840 | */ |
| 1841 | void dvmDbgWaitForSuspend(ObjectId threadId) |
| 1842 | { |
| 1843 | Object* threadObj; |
| 1844 | Thread* thread; |
| 1845 | |
| 1846 | threadObj = objectIdToObject(threadId); |
| 1847 | assert(threadObj != NULL); |
| 1848 | |
| 1849 | dvmLockThreadList(NULL); |
| 1850 | thread = threadObjToThread(threadObj); |
| 1851 | dvmUnlockThreadList(); |
| 1852 | |
| 1853 | if (thread != NULL) |
| 1854 | dvmWaitForSuspend(thread); |
| 1855 | } |
| 1856 | #endif |
| 1857 | |
| 1858 | |
| 1859 | /* |
| 1860 | * Return the ObjectId for the "system" thread group. |
| 1861 | */ |
| 1862 | ObjectId dvmDbgGetSystemThreadGroupId(void) |
| 1863 | { |
| 1864 | Object* groupObj = dvmGetSystemThreadGroup(); |
| 1865 | return objectToObjectId(groupObj); |
| 1866 | } |
| 1867 | |
| 1868 | /* |
| 1869 | * Return the ObjectId for the "system" thread group. |
| 1870 | */ |
| 1871 | ObjectId dvmDbgGetMainThreadGroupId(void) |
| 1872 | { |
| 1873 | Object* groupObj = dvmGetMainThreadGroup(); |
| 1874 | return objectToObjectId(groupObj); |
| 1875 | } |
| 1876 | |
| 1877 | /* |
| 1878 | * Get the name of a thread. |
| 1879 | * |
| 1880 | * Returns a newly-allocated string. |
| 1881 | */ |
| 1882 | char* dvmDbgGetThreadName(ObjectId threadId) |
| 1883 | { |
| 1884 | Object* threadObj; |
| 1885 | StringObject* nameStr; |
| 1886 | char* str; |
| 1887 | char* result; |
| 1888 | |
| 1889 | threadObj = objectIdToObject(threadId); |
| 1890 | assert(threadObj != NULL); |
| 1891 | |
| 1892 | nameStr = (StringObject*) dvmGetFieldObject(threadObj, |
| 1893 | gDvm.offJavaLangThread_name); |
| 1894 | str = dvmCreateCstrFromString(nameStr); |
| 1895 | result = (char*) malloc(strlen(str) + 20); |
| 1896 | |
| 1897 | /* lock the thread list, so the thread doesn't vanish while we work */ |
| 1898 | dvmLockThreadList(NULL); |
| 1899 | Thread* thread = threadObjToThread(threadObj); |
| 1900 | if (thread != NULL) |
| 1901 | sprintf(result, "<%d> %s", thread->threadId, str); |
| 1902 | else |
| 1903 | sprintf(result, "%s", str); |
| 1904 | dvmUnlockThreadList(); |
| 1905 | |
| 1906 | free(str); |
| 1907 | return result; |
| 1908 | } |
| 1909 | |
| 1910 | /* |
| 1911 | * Get a thread's group. |
| 1912 | */ |
| 1913 | ObjectId dvmDbgGetThreadGroup(ObjectId threadId) |
| 1914 | { |
| 1915 | Object* threadObj; |
| 1916 | Object* group; |
| 1917 | |
| 1918 | threadObj = objectIdToObject(threadId); |
| 1919 | assert(threadObj != NULL); |
| 1920 | |
| 1921 | group = dvmGetFieldObject(threadObj, gDvm.offJavaLangThread_group); |
| 1922 | return objectToObjectId(group); |
| 1923 | } |
| 1924 | |
| 1925 | |
| 1926 | /* |
| 1927 | * Get the name of a thread group. |
| 1928 | * |
| 1929 | * Returns a newly-allocated string. |
| 1930 | */ |
| 1931 | char* dvmDbgGetThreadGroupName(ObjectId threadGroupId) |
| 1932 | { |
| 1933 | Object* threadGroup; |
| 1934 | InstField* nameField; |
| 1935 | StringObject* nameStr; |
| 1936 | |
| 1937 | threadGroup = objectIdToObject(threadGroupId); |
| 1938 | assert(threadGroup != NULL); |
| 1939 | |
| 1940 | nameField = dvmFindInstanceField(gDvm.classJavaLangThreadGroup, |
| 1941 | "name", "Ljava/lang/String;"); |
| 1942 | if (nameField == NULL) { |
| 1943 | LOGE("unable to find name field in ThreadGroup\n"); |
| 1944 | return NULL; |
| 1945 | } |
| 1946 | |
| 1947 | nameStr = (StringObject*) dvmGetFieldObject(threadGroup, |
| 1948 | nameField->byteOffset); |
| 1949 | return dvmCreateCstrFromString(nameStr); |
| 1950 | } |
| 1951 | |
| 1952 | /* |
| 1953 | * Get the parent of a thread group. |
| 1954 | * |
| 1955 | * Returns a newly-allocated string. |
| 1956 | */ |
| 1957 | ObjectId dvmDbgGetThreadGroupParent(ObjectId threadGroupId) |
| 1958 | { |
| 1959 | Object* threadGroup; |
| 1960 | InstField* parentField; |
| 1961 | Object* parent; |
| 1962 | |
| 1963 | threadGroup = objectIdToObject(threadGroupId); |
| 1964 | assert(threadGroup != NULL); |
| 1965 | |
| 1966 | parentField = dvmFindInstanceField(gDvm.classJavaLangThreadGroup, |
| 1967 | "parent", "Ljava/lang/ThreadGroup;"); |
| 1968 | if (parentField == NULL) { |
| 1969 | LOGE("unable to find parent field in ThreadGroup\n"); |
| 1970 | parent = NULL; |
| 1971 | } else { |
| 1972 | parent = dvmGetFieldObject(threadGroup, parentField->byteOffset); |
| 1973 | } |
| 1974 | return objectToObjectId(parent); |
| 1975 | } |
| 1976 | |
| 1977 | /* |
| 1978 | * Get the list of threads in the thread group. |
| 1979 | * |
| 1980 | * We do this by running through the full list of threads and returning |
| 1981 | * the ones that have the ThreadGroup object as their owner. |
| 1982 | * |
| 1983 | * If threadGroupId is set to "kAllThreads", we ignore the group field and |
| 1984 | * return all threads. |
| 1985 | * |
| 1986 | * The caller must free "*ppThreadIds". |
| 1987 | */ |
| 1988 | void dvmDbgGetThreadGroupThreads(ObjectId threadGroupId, |
| 1989 | ObjectId** ppThreadIds, u4* pThreadCount) |
| 1990 | { |
| 1991 | Object* targetThreadGroup = NULL; |
| 1992 | InstField* groupField = NULL; |
| 1993 | Thread* thread; |
| 1994 | int count; |
| 1995 | |
| 1996 | if (threadGroupId != THREAD_GROUP_ALL) { |
| 1997 | targetThreadGroup = objectIdToObject(threadGroupId); |
| 1998 | assert(targetThreadGroup != NULL); |
| 1999 | } |
| 2000 | |
| 2001 | groupField = dvmFindInstanceField(gDvm.classJavaLangThread, |
| 2002 | "group", "Ljava/lang/ThreadGroup;"); |
| 2003 | |
| 2004 | dvmLockThreadList(NULL); |
| 2005 | |
| 2006 | thread = gDvm.threadList; |
| 2007 | count = 0; |
| 2008 | for (thread = gDvm.threadList; thread != NULL; thread = thread->next) { |
| 2009 | Object* group; |
| 2010 | |
| 2011 | /* Skip over the JDWP support thread. Some debuggers |
| 2012 | * get bent out of shape when they can't suspend and |
| 2013 | * query all threads, so it's easier if we just don't |
| 2014 | * tell them about us. |
| 2015 | */ |
| 2016 | if (thread->handle == dvmJdwpGetDebugThread(gDvm.jdwpState)) |
| 2017 | continue; |
| 2018 | |
| 2019 | /* This thread is currently being created, and isn't ready |
| 2020 | * to be seen by the debugger yet. |
| 2021 | */ |
| 2022 | if (thread->threadObj == NULL) |
| 2023 | continue; |
| 2024 | |
| 2025 | group = dvmGetFieldObject(thread->threadObj, groupField->byteOffset); |
| 2026 | if (threadGroupId == THREAD_GROUP_ALL || group == targetThreadGroup) |
| 2027 | count++; |
| 2028 | } |
| 2029 | |
| 2030 | *pThreadCount = count; |
| 2031 | |
| 2032 | if (count == 0) { |
| 2033 | *ppThreadIds = NULL; |
| 2034 | } else { |
| 2035 | ObjectId* ptr; |
| 2036 | ptr = *ppThreadIds = (ObjectId*) malloc(sizeof(ObjectId) * count); |
| 2037 | |
| 2038 | for (thread = gDvm.threadList; thread != NULL; thread = thread->next) { |
| 2039 | Object* group; |
| 2040 | |
| 2041 | /* Skip over the JDWP support thread. Some debuggers |
| 2042 | * get bent out of shape when they can't suspend and |
| 2043 | * query all threads, so it's easier if we just don't |
| 2044 | * tell them about us. |
| 2045 | */ |
| 2046 | if (thread->handle == dvmJdwpGetDebugThread(gDvm.jdwpState)) |
| 2047 | continue; |
| 2048 | |
| 2049 | /* This thread is currently being created, and isn't ready |
| 2050 | * to be seen by the debugger yet. |
| 2051 | */ |
| 2052 | if (thread->threadObj == NULL) |
| 2053 | continue; |
| 2054 | |
| 2055 | group = dvmGetFieldObject(thread->threadObj,groupField->byteOffset); |
| 2056 | if (threadGroupId == THREAD_GROUP_ALL || group == targetThreadGroup) |
| 2057 | { |
| 2058 | *ptr++ = objectToObjectId(thread->threadObj); |
| 2059 | count--; |
| 2060 | } |
| 2061 | } |
| 2062 | |
| 2063 | assert(count == 0); |
| 2064 | } |
| 2065 | |
| 2066 | dvmUnlockThreadList(); |
| 2067 | } |
| 2068 | |
| 2069 | /* |
| 2070 | * Get all threads. |
| 2071 | * |
| 2072 | * The caller must free "*ppThreadIds". |
| 2073 | */ |
| 2074 | void dvmDbgGetAllThreads(ObjectId** ppThreadIds, u4* pThreadCount) |
| 2075 | { |
| 2076 | dvmDbgGetThreadGroupThreads(THREAD_GROUP_ALL, ppThreadIds, pThreadCount); |
| 2077 | } |
| 2078 | |
| 2079 | |
| 2080 | /* |
| 2081 | * Count up the #of frames on the thread's stack. |
| 2082 | * |
| 2083 | * Returns -1 on failure; |
| 2084 | */ |
| 2085 | int dvmDbgGetThreadFrameCount(ObjectId threadId) |
| 2086 | { |
| 2087 | Object* threadObj; |
| 2088 | Thread* thread; |
| 2089 | void* framePtr; |
| 2090 | u4 count = 0; |
| 2091 | |
| 2092 | threadObj = objectIdToObject(threadId); |
| 2093 | |
| 2094 | dvmLockThreadList(NULL); |
| 2095 | |
| 2096 | thread = threadObjToThread(threadObj); |
| 2097 | if (thread == NULL) |
| 2098 | goto bail; |
| 2099 | |
| 2100 | framePtr = thread->curFrame; |
| 2101 | while (framePtr != NULL) { |
| 2102 | if (!dvmIsBreakFrame(framePtr)) |
| 2103 | count++; |
| 2104 | |
| 2105 | framePtr = SAVEAREA_FROM_FP(framePtr)->prevFrame; |
| 2106 | } |
| 2107 | |
| 2108 | bail: |
| 2109 | dvmUnlockThreadList(); |
| 2110 | return count; |
| 2111 | } |
| 2112 | |
| 2113 | /* |
| 2114 | * Get info for frame N from the specified thread's stack. |
| 2115 | */ |
| 2116 | bool dvmDbgGetThreadFrame(ObjectId threadId, int num, FrameId* pFrameId, |
| 2117 | JdwpLocation* pLoc) |
| 2118 | { |
| 2119 | Object* threadObj; |
| 2120 | Thread* thread; |
| 2121 | void* framePtr; |
| 2122 | int count; |
| 2123 | |
| 2124 | threadObj = objectIdToObject(threadId); |
| 2125 | |
| 2126 | dvmLockThreadList(NULL); |
| 2127 | |
| 2128 | thread = threadObjToThread(threadObj); |
| 2129 | if (thread == NULL) |
| 2130 | goto bail; |
| 2131 | |
| 2132 | framePtr = thread->curFrame; |
| 2133 | count = 0; |
| 2134 | while (framePtr != NULL) { |
| 2135 | const StackSaveArea* saveArea = SAVEAREA_FROM_FP(framePtr); |
| 2136 | const Method* method = saveArea->method; |
| 2137 | |
| 2138 | if (!dvmIsBreakFrame(framePtr)) { |
| 2139 | if (count == num) { |
| 2140 | *pFrameId = frameToFrameId(framePtr); |
| 2141 | if (dvmIsInterfaceClass(method->clazz)) |
| 2142 | pLoc->typeTag = TT_INTERFACE; |
| 2143 | else |
| 2144 | pLoc->typeTag = TT_CLASS; |
| 2145 | pLoc->classId = classObjectToRefTypeId(method->clazz); |
| 2146 | pLoc->methodId = methodToMethodId(method); |
| 2147 | if (dvmIsNativeMethod(method)) |
| 2148 | pLoc->idx = (u8)-1; |
| 2149 | else |
| 2150 | pLoc->idx = saveArea->xtra.currentPc - method->insns; |
| 2151 | dvmUnlockThreadList(); |
| 2152 | return true; |
| 2153 | } |
| 2154 | |
| 2155 | count++; |
| 2156 | } |
| 2157 | |
| 2158 | framePtr = saveArea->prevFrame; |
| 2159 | } |
| 2160 | |
| 2161 | bail: |
| 2162 | dvmUnlockThreadList(); |
| 2163 | return false; |
| 2164 | } |
| 2165 | |
| 2166 | /* |
| 2167 | * Get the ThreadId for the current thread. |
| 2168 | */ |
| 2169 | ObjectId dvmDbgGetThreadSelfId(void) |
| 2170 | { |
| 2171 | Thread* self = dvmThreadSelf(); |
| 2172 | return objectToObjectId(self->threadObj); |
| 2173 | } |
| 2174 | |
| 2175 | /* |
| 2176 | * Suspend the VM. |
| 2177 | */ |
| 2178 | void dvmDbgSuspendVM(bool isEvent) |
| 2179 | { |
| 2180 | dvmSuspendAllThreads(isEvent ? SUSPEND_FOR_DEBUG_EVENT : SUSPEND_FOR_DEBUG); |
| 2181 | } |
| 2182 | |
| 2183 | /* |
| 2184 | * Resume the VM. |
| 2185 | */ |
| 2186 | void dvmDbgResumeVM() |
| 2187 | { |
| 2188 | dvmResumeAllThreads(SUSPEND_FOR_DEBUG); |
| 2189 | } |
| 2190 | |
| 2191 | /* |
| 2192 | * Suspend one thread (not ourselves). |
| 2193 | */ |
| 2194 | void dvmDbgSuspendThread(ObjectId threadId) |
| 2195 | { |
| 2196 | Object* threadObj = objectIdToObject(threadId); |
| 2197 | Thread* thread; |
| 2198 | |
| 2199 | dvmLockThreadList(NULL); |
| 2200 | |
| 2201 | thread = threadObjToThread(threadObj); |
| 2202 | if (thread == NULL) { |
| 2203 | /* can happen if our ThreadDeath notify crosses in the mail */ |
| 2204 | LOGW("WARNING: threadid=%llx obj=%p no match\n", threadId, threadObj); |
| 2205 | } else { |
| 2206 | dvmSuspendThread(thread); |
| 2207 | } |
| 2208 | |
| 2209 | dvmUnlockThreadList(); |
| 2210 | } |
| 2211 | |
| 2212 | /* |
| 2213 | * Resume one thread (not ourselves). |
| 2214 | */ |
| 2215 | void dvmDbgResumeThread(ObjectId threadId) |
| 2216 | { |
| 2217 | Object* threadObj = objectIdToObject(threadId); |
| 2218 | Thread* thread; |
| 2219 | |
| 2220 | dvmLockThreadList(NULL); |
| 2221 | |
| 2222 | thread = threadObjToThread(threadObj); |
| 2223 | if (thread == NULL) { |
| 2224 | LOGW("WARNING: threadid=%llx obj=%p no match\n", threadId, threadObj); |
| 2225 | } else { |
| 2226 | dvmResumeThread(thread); |
| 2227 | } |
| 2228 | |
| 2229 | dvmUnlockThreadList(); |
| 2230 | } |
| 2231 | |
| 2232 | /* |
| 2233 | * Suspend ourselves after sending an event to the debugger. |
| 2234 | */ |
| 2235 | void dvmDbgSuspendSelf(void) |
| 2236 | { |
| 2237 | dvmSuspendSelf(true); |
| 2238 | } |
| 2239 | |
| 2240 | /* |
| 2241 | * Get the "this" object for the specified frame. |
| 2242 | */ |
| 2243 | static Object* getThisObject(const u4* framePtr) |
| 2244 | { |
| 2245 | const StackSaveArea* saveArea = SAVEAREA_FROM_FP(framePtr); |
| 2246 | const Method* method = saveArea->method; |
| 2247 | int argOffset = method->registersSize - method->insSize; |
| 2248 | Object* thisObj; |
| 2249 | |
| 2250 | if (method == NULL) { |
| 2251 | /* this is a "break" frame? */ |
| 2252 | assert(false); |
| 2253 | return NULL; |
| 2254 | } |
| 2255 | |
| 2256 | LOGVV(" Pulling this object for frame at %p\n", framePtr); |
| 2257 | LOGVV(" Method='%s' native=%d static=%d this=%p\n", |
| 2258 | method->name, dvmIsNativeMethod(method), |
| 2259 | dvmIsStaticMethod(method), (Object*) framePtr[argOffset]); |
| 2260 | |
| 2261 | /* |
| 2262 | * No "this" pointer for statics. No args on the interp stack for |
| 2263 | * native methods invoked directly from the VM. |
| 2264 | */ |
| 2265 | if (dvmIsNativeMethod(method) || dvmIsStaticMethod(method)) |
| 2266 | thisObj = NULL; |
| 2267 | else |
| 2268 | thisObj = (Object*) framePtr[argOffset]; |
| 2269 | |
| 2270 | if (thisObj != NULL && !dvmIsValidObject(thisObj)) { |
| 2271 | LOGW("Debugger: invalid 'this' pointer %p in %s.%s; returning NULL\n", |
| 2272 | framePtr, method->clazz->descriptor, method->name); |
| 2273 | thisObj = NULL; |
| 2274 | } |
| 2275 | |
| 2276 | return thisObj; |
| 2277 | } |
| 2278 | |
| 2279 | /* |
| 2280 | * Return the "this" object for the specified frame. The thread must be |
| 2281 | * suspended. |
| 2282 | */ |
| 2283 | bool dvmDbgGetThisObject(ObjectId threadId, FrameId frameId, ObjectId* pThisId) |
| 2284 | { |
| 2285 | const u4* framePtr = frameIdToFrame(frameId); |
| 2286 | Object* thisObj; |
| 2287 | |
| 2288 | UNUSED_PARAMETER(threadId); |
| 2289 | |
| 2290 | thisObj = getThisObject(framePtr); |
| 2291 | |
| 2292 | *pThisId = objectToObjectId(thisObj); |
| 2293 | return true; |
| 2294 | } |
| 2295 | |
| 2296 | /* |
| 2297 | * Copy the value of a method argument or local variable into the |
| 2298 | * specified buffer. The value will be preceeded with the tag. |
| 2299 | */ |
| 2300 | void dvmDbgGetLocalValue(ObjectId threadId, FrameId frameId, int slot, |
| 2301 | u1 tag, u1* buf, int expectedLen) |
| 2302 | { |
| 2303 | const u4* framePtr = frameIdToFrame(frameId); |
| 2304 | Object* objVal; |
| 2305 | u4 intVal; |
| 2306 | u8 longVal; |
| 2307 | |
| 2308 | UNUSED_PARAMETER(threadId); |
| 2309 | |
| 2310 | slot = untweakSlot(slot, framePtr); // Eclipse workaround |
| 2311 | |
| 2312 | switch (tag) { |
| 2313 | case JT_BOOLEAN: |
| 2314 | assert(expectedLen == 1); |
| 2315 | intVal = framePtr[slot]; |
| 2316 | set1(buf+1, intVal != 0); |
| 2317 | break; |
| 2318 | case JT_BYTE: |
| 2319 | assert(expectedLen == 1); |
| 2320 | intVal = framePtr[slot]; |
| 2321 | set1(buf+1, intVal); |
| 2322 | break; |
| 2323 | case JT_SHORT: |
| 2324 | case JT_CHAR: |
| 2325 | assert(expectedLen == 2); |
| 2326 | intVal = framePtr[slot]; |
| 2327 | set2BE(buf+1, intVal); |
| 2328 | break; |
| 2329 | case JT_INT: |
| 2330 | case JT_FLOAT: |
| 2331 | assert(expectedLen == 4); |
| 2332 | intVal = framePtr[slot]; |
| 2333 | set4BE(buf+1, intVal); |
| 2334 | break; |
| 2335 | case JT_ARRAY: |
| 2336 | assert(expectedLen == 8); |
| 2337 | { |
| 2338 | /* convert to "ObjectId" */ |
| 2339 | objVal = (Object*)framePtr[slot]; |
| 2340 | if (objVal != NULL && !dvmIsValidObject(objVal)) { |
| 2341 | LOGW("JDWP: slot %d expected to hold array, %p invalid\n", |
| 2342 | slot, objVal); |
| 2343 | dvmAbort(); // DEBUG: make it obvious |
| 2344 | objVal = NULL; |
| 2345 | tag = JT_OBJECT; // JT_ARRAY not expected for NULL ref |
| 2346 | } |
| 2347 | dvmSetObjectId(buf+1, objectToObjectId(objVal)); |
| 2348 | } |
| 2349 | break; |
| 2350 | case JT_OBJECT: |
| 2351 | assert(expectedLen == 8); |
| 2352 | { |
| 2353 | /* convert to "ObjectId" */ |
| 2354 | objVal = (Object*)framePtr[slot]; |
| 2355 | //char* name; |
| 2356 | |
| 2357 | if (objVal != NULL) { |
| 2358 | if (!dvmIsValidObject(objVal)) { |
| 2359 | LOGW("JDWP: slot %d expected to hold object, %p invalid\n", |
| 2360 | slot, objVal); |
| 2361 | dvmAbort(); // DEBUG: make it obvious |
| 2362 | objVal = NULL; |
| 2363 | } |
| 2364 | //name = generateJNISignature(objVal->clazz); |
| 2365 | tag = resultTagFromObject(objVal); |
| 2366 | //free(name); |
| 2367 | } else { |
| 2368 | tag = JT_OBJECT; |
| 2369 | } |
| 2370 | dvmSetObjectId(buf+1, objectToObjectId(objVal)); |
| 2371 | } |
| 2372 | break; |
| 2373 | case JT_DOUBLE: |
| 2374 | case JT_LONG: |
| 2375 | assert(expectedLen == 8); |
| 2376 | longVal = *(u8*)(&framePtr[slot]); |
| 2377 | set8BE(buf+1, longVal); |
| 2378 | break; |
| 2379 | default: |
| 2380 | LOGE("ERROR: unhandled tag '%c'\n", tag); |
| 2381 | assert(false); |
| 2382 | break; |
| 2383 | } |
| 2384 | |
| 2385 | set1(buf, tag); |
| 2386 | } |
| 2387 | |
| 2388 | /* |
| 2389 | * Copy a new value into an argument or local variable. |
| 2390 | */ |
| 2391 | void dvmDbgSetLocalValue(ObjectId threadId, FrameId frameId, int slot, u1 tag, |
| 2392 | u8 value, int width) |
| 2393 | { |
| 2394 | u4* framePtr = frameIdToFrame(frameId); |
| 2395 | |
| 2396 | UNUSED_PARAMETER(threadId); |
| 2397 | |
| 2398 | slot = untweakSlot(slot, framePtr); // Eclipse workaround |
| 2399 | |
| 2400 | switch (tag) { |
| 2401 | case JT_BOOLEAN: |
| 2402 | assert(width == 1); |
| 2403 | framePtr[slot] = (u4)value; |
| 2404 | break; |
| 2405 | case JT_BYTE: |
| 2406 | assert(width == 1); |
| 2407 | framePtr[slot] = (u4)value; |
| 2408 | break; |
| 2409 | case JT_SHORT: |
| 2410 | case JT_CHAR: |
| 2411 | assert(width == 2); |
| 2412 | framePtr[slot] = (u4)value; |
| 2413 | break; |
| 2414 | case JT_INT: |
| 2415 | case JT_FLOAT: |
| 2416 | assert(width == 4); |
| 2417 | framePtr[slot] = (u4)value; |
| 2418 | break; |
| 2419 | case JT_STRING: |
| 2420 | /* The debugger calls VirtualMachine.CreateString to create a new |
| 2421 | * string, then uses this to set the object reference, when you |
| 2422 | * edit a String object */ |
| 2423 | case JT_ARRAY: |
| 2424 | case JT_OBJECT: |
| 2425 | assert(width == sizeof(ObjectId)); |
| 2426 | framePtr[slot] = (u4) objectIdToObject(value); |
| 2427 | break; |
| 2428 | case JT_DOUBLE: |
| 2429 | case JT_LONG: |
| 2430 | assert(width == 8); |
| 2431 | *(u8*)(&framePtr[slot]) = value; |
| 2432 | break; |
| 2433 | case JT_VOID: |
| 2434 | case JT_CLASS_OBJECT: |
| 2435 | case JT_THREAD: |
| 2436 | case JT_THREAD_GROUP: |
| 2437 | case JT_CLASS_LOADER: |
| 2438 | default: |
| 2439 | LOGE("ERROR: unhandled tag '%c'\n", tag); |
| 2440 | assert(false); |
| 2441 | break; |
| 2442 | } |
| 2443 | } |
| 2444 | |
| 2445 | |
| 2446 | /* |
| 2447 | * =========================================================================== |
| 2448 | * Debugger notification |
| 2449 | * =========================================================================== |
| 2450 | */ |
| 2451 | |
| 2452 | /* |
| 2453 | * Tell JDWP that a breakpoint address has been reached. |
| 2454 | * |
| 2455 | * "pcOffset" will be -1 for native methods. |
| 2456 | * "thisPtr" will be NULL for static methods. |
| 2457 | */ |
| 2458 | void dvmDbgPostLocationEvent(const Method* method, int pcOffset, |
| 2459 | Object* thisPtr, int eventFlags) |
| 2460 | { |
| 2461 | JdwpLocation loc; |
| 2462 | |
| 2463 | if (dvmIsInterfaceClass(method->clazz)) |
| 2464 | loc.typeTag = TT_INTERFACE; |
| 2465 | else |
| 2466 | loc.typeTag = TT_CLASS; |
| 2467 | loc.classId = classObjectToRefTypeId(method->clazz); |
| 2468 | loc.methodId = methodToMethodId(method); |
| 2469 | loc.idx = pcOffset; |
| 2470 | |
| 2471 | /* |
| 2472 | * Note we use "NoReg" so we don't keep track of references that are |
| 2473 | * never actually sent to the debugger. The "thisPtr" is used to |
| 2474 | * compare against registered events. |
| 2475 | */ |
| 2476 | |
| 2477 | if (dvmJdwpPostLocationEvent(gDvm.jdwpState, &loc, |
| 2478 | objectToObjectIdNoReg(thisPtr), eventFlags)) |
| 2479 | { |
| 2480 | classObjectToRefTypeId(method->clazz); |
| 2481 | objectToObjectId(thisPtr); |
| 2482 | } |
| 2483 | } |
| 2484 | |
| 2485 | /* |
| 2486 | * Tell JDWP that an exception has occurred. |
| 2487 | */ |
| 2488 | void dvmDbgPostException(void* throwFp, int throwRelPc, void* catchFp, |
| 2489 | int catchRelPc, Object* exception) |
| 2490 | { |
| 2491 | JdwpLocation throwLoc, catchLoc; |
| 2492 | const Method* throwMeth; |
| 2493 | const Method* catchMeth; |
| 2494 | |
| 2495 | throwMeth = SAVEAREA_FROM_FP(throwFp)->method; |
| 2496 | if (dvmIsInterfaceClass(throwMeth->clazz)) |
| 2497 | throwLoc.typeTag = TT_INTERFACE; |
| 2498 | else |
| 2499 | throwLoc.typeTag = TT_CLASS; |
| 2500 | throwLoc.classId = classObjectToRefTypeId(throwMeth->clazz); |
| 2501 | throwLoc.methodId = methodToMethodId(throwMeth); |
| 2502 | throwLoc.idx = throwRelPc; |
| 2503 | |
| 2504 | if (catchRelPc < 0) { |
| 2505 | memset(&catchLoc, 0, sizeof(catchLoc)); |
| 2506 | } else { |
| 2507 | catchMeth = SAVEAREA_FROM_FP(catchFp)->method; |
| 2508 | if (dvmIsInterfaceClass(catchMeth->clazz)) |
| 2509 | catchLoc.typeTag = TT_INTERFACE; |
| 2510 | else |
| 2511 | catchLoc.typeTag = TT_CLASS; |
| 2512 | catchLoc.classId = classObjectToRefTypeId(catchMeth->clazz); |
| 2513 | catchLoc.methodId = methodToMethodId(catchMeth); |
| 2514 | catchLoc.idx = catchRelPc; |
| 2515 | } |
| 2516 | |
| 2517 | /* need this for InstanceOnly filters */ |
| 2518 | Object* thisObj = getThisObject(throwFp); |
| 2519 | |
| 2520 | dvmJdwpPostException(gDvm.jdwpState, &throwLoc, objectToObjectId(exception), |
| 2521 | classObjectToRefTypeId(exception->clazz), &catchLoc, |
| 2522 | objectToObjectId(thisObj)); |
| 2523 | } |
| 2524 | |
| 2525 | /* |
| 2526 | * Tell JDWP and/or DDMS that a thread has started. |
| 2527 | */ |
| 2528 | void dvmDbgPostThreadStart(Thread* thread) |
| 2529 | { |
| 2530 | if (gDvm.debuggerActive) { |
| 2531 | dvmJdwpPostThreadChange(gDvm.jdwpState, |
| 2532 | objectToObjectId(thread->threadObj), true); |
| 2533 | } |
| 2534 | if (gDvm.ddmThreadNotification) |
| 2535 | dvmDdmSendThreadNotification(thread, true); |
| 2536 | } |
| 2537 | |
| 2538 | /* |
| 2539 | * Tell JDWP and/or DDMS that a thread has gone away. |
| 2540 | */ |
| 2541 | void dvmDbgPostThreadDeath(Thread* thread) |
| 2542 | { |
| 2543 | if (gDvm.debuggerActive) { |
| 2544 | dvmJdwpPostThreadChange(gDvm.jdwpState, |
| 2545 | objectToObjectId(thread->threadObj), false); |
| 2546 | } |
| 2547 | if (gDvm.ddmThreadNotification) |
| 2548 | dvmDdmSendThreadNotification(thread, false); |
| 2549 | } |
| 2550 | |
| 2551 | /* |
| 2552 | * Tell JDWP that a new class has been prepared. |
| 2553 | */ |
| 2554 | void dvmDbgPostClassPrepare(ClassObject* clazz) |
| 2555 | { |
| 2556 | int tag; |
| 2557 | char* signature; |
| 2558 | |
| 2559 | if (dvmIsInterfaceClass(clazz)) |
| 2560 | tag = TT_INTERFACE; |
| 2561 | else |
| 2562 | tag = TT_CLASS; |
| 2563 | |
| 2564 | // TODO - we currently always send both "verified" and "prepared" since |
| 2565 | // debuggers seem to like that. There might be some advantage to honesty, |
| 2566 | // since the class may not yet be verified. |
| 2567 | signature = generateJNISignature(clazz); |
| 2568 | dvmJdwpPostClassPrepare(gDvm.jdwpState, tag, classObjectToRefTypeId(clazz), |
| 2569 | signature, CS_VERIFIED | CS_PREPARED); |
| 2570 | free(signature); |
| 2571 | } |
| 2572 | |
| 2573 | /* |
| 2574 | * The JDWP event mechanism has registered an event with a LocationOnly |
| 2575 | * mod. Tell the interpreter to call us if we hit the specified |
| 2576 | * address. |
| 2577 | */ |
| 2578 | bool dvmDbgWatchLocation(const JdwpLocation* pLoc) |
| 2579 | { |
| 2580 | Method* method = methodIdToMethod(pLoc->classId, pLoc->methodId); |
| 2581 | assert(!dvmIsNativeMethod(method)); |
| 2582 | dvmAddBreakAddr(method, pLoc->idx); |
| 2583 | return true; /* assume success */ |
| 2584 | } |
| 2585 | |
| 2586 | /* |
| 2587 | * An event with a LocationOnly mod has been removed. |
| 2588 | */ |
| 2589 | void dvmDbgUnwatchLocation(const JdwpLocation* pLoc) |
| 2590 | { |
| 2591 | Method* method = methodIdToMethod(pLoc->classId, pLoc->methodId); |
| 2592 | assert(!dvmIsNativeMethod(method)); |
| 2593 | dvmClearBreakAddr(method, pLoc->idx); |
| 2594 | } |
| 2595 | |
| 2596 | /* |
| 2597 | * The JDWP event mechanism has registered a single-step event. Tell |
| 2598 | * the interpreter about it. |
| 2599 | */ |
| 2600 | bool dvmDbgConfigureStep(ObjectId threadId, enum JdwpStepSize size, |
| 2601 | enum JdwpStepDepth depth) |
| 2602 | { |
| 2603 | Object* threadObj; |
| 2604 | Thread* thread; |
| 2605 | bool result = false; |
| 2606 | |
| 2607 | threadObj = objectIdToObject(threadId); |
| 2608 | assert(threadObj != NULL); |
| 2609 | |
| 2610 | /* |
| 2611 | * Get a pointer to the Thread struct for this ID. The pointer will |
| 2612 | * be used strictly for comparisons against the current thread pointer |
| 2613 | * after the setup is complete, so we can safely release the lock. |
| 2614 | */ |
| 2615 | dvmLockThreadList(NULL); |
| 2616 | thread = threadObjToThread(threadObj); |
| 2617 | |
| 2618 | if (thread == NULL) { |
| 2619 | LOGE("Thread for single-step not found\n"); |
| 2620 | goto bail; |
| 2621 | } |
| 2622 | if (!dvmIsSuspended(thread)) { |
| 2623 | LOGE("Thread for single-step not suspended\n"); |
| 2624 | assert(!"non-susp step"); // I want to know if this can happen |
| 2625 | goto bail; |
| 2626 | } |
| 2627 | |
| 2628 | assert(dvmIsSuspended(thread)); |
| 2629 | if (!dvmAddSingleStep(thread, size, depth)) |
| 2630 | goto bail; |
| 2631 | |
| 2632 | result = true; |
| 2633 | |
| 2634 | bail: |
| 2635 | dvmUnlockThreadList(); |
| 2636 | return result; |
| 2637 | } |
| 2638 | |
| 2639 | /* |
| 2640 | * A single-step event has been removed. |
| 2641 | */ |
| 2642 | void dvmDbgUnconfigureStep(ObjectId threadId) |
| 2643 | { |
| 2644 | UNUSED_PARAMETER(threadId); |
| 2645 | |
| 2646 | /* right now it's global, so don't need to find Thread */ |
| 2647 | dvmClearSingleStep(NULL); |
| 2648 | } |
| 2649 | |
| 2650 | /* |
| 2651 | * Invoke a method in a thread that has been stopped on a breakpoint or |
| 2652 | * other debugger event. (This function is called from the JDWP thread.) |
| 2653 | * |
| 2654 | * Note that access control is not enforced, per spec. |
| 2655 | */ |
| 2656 | JdwpError dvmDbgInvokeMethod(ObjectId threadId, ObjectId objectId, |
| 2657 | RefTypeId classId, MethodId methodId, u4 numArgs, ObjectId* argArray, |
| 2658 | u4 options, u1* pResultTag, u8* pResultValue, ObjectId* pExceptObj) |
| 2659 | { |
| 2660 | Object* threadObj = objectIdToObject(threadId); |
| 2661 | Thread* targetThread; |
| 2662 | JdwpError err = ERR_NONE; |
| 2663 | |
| 2664 | dvmLockThreadList(NULL); |
| 2665 | |
| 2666 | targetThread = threadObjToThread(threadObj); |
| 2667 | if (targetThread == NULL) { |
| 2668 | err = ERR_INVALID_THREAD; /* thread does not exist */ |
| 2669 | dvmUnlockThreadList(); |
| 2670 | goto bail; |
| 2671 | } |
| 2672 | if (!targetThread->invokeReq.ready) { |
| 2673 | err = ERR_INVALID_THREAD; /* thread not stopped by event */ |
| 2674 | dvmUnlockThreadList(); |
| 2675 | goto bail; |
| 2676 | } |
| 2677 | |
| 2678 | /* |
| 2679 | * TODO: ought to screen the various IDs, and verify that the argument |
| 2680 | * list is valid. |
| 2681 | */ |
| 2682 | |
| 2683 | targetThread->invokeReq.obj = objectIdToObject(objectId); |
| 2684 | targetThread->invokeReq.thread = threadObj; |
| 2685 | targetThread->invokeReq.clazz = refTypeIdToClassObject(classId); |
| 2686 | targetThread->invokeReq.method = methodIdToMethod(classId, methodId); |
| 2687 | targetThread->invokeReq.numArgs = numArgs; |
| 2688 | targetThread->invokeReq.argArray = argArray; |
| 2689 | targetThread->invokeReq.options = options; |
| 2690 | targetThread->invokeReq.invokeNeeded = true; |
| 2691 | |
| 2692 | /* |
| 2693 | * This is a bit risky -- if the thread goes away we're sitting high |
| 2694 | * and dry -- but we must release this before the dvmResumeAllThreads |
| 2695 | * call, and it's unwise to hold it during dvmWaitForSuspend. |
| 2696 | */ |
| 2697 | dvmUnlockThreadList(); |
| 2698 | |
| 2699 | /* |
The Android Open Source Project | 9940988 | 2009-03-18 22:20:24 -0700 | [diff] [blame] | 2700 | * We change our (JDWP thread) status, which should be THREAD_RUNNING, |
| 2701 | * so the VM can suspend for a GC if the invoke request causes us to |
| 2702 | * run out of memory. It's also a good idea to change it before locking |
| 2703 | * the invokeReq mutex, although that should never be held for long. |
The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 2704 | */ |
| 2705 | Thread* self = dvmThreadSelf(); |
| 2706 | int oldStatus = dvmChangeStatus(self, THREAD_VMWAIT); |
| 2707 | |
| 2708 | LOGV(" Transferring control to event thread\n"); |
| 2709 | dvmLockMutex(&targetThread->invokeReq.lock); |
| 2710 | |
| 2711 | if ((options & INVOKE_SINGLE_THREADED) == 0) { |
| 2712 | LOGV(" Resuming all threads\n"); |
| 2713 | dvmResumeAllThreads(SUSPEND_FOR_DEBUG_EVENT); |
| 2714 | } else { |
| 2715 | LOGV(" Resuming event thread only\n"); |
| 2716 | dvmResumeThread(targetThread); |
| 2717 | } |
| 2718 | |
| 2719 | /* |
| 2720 | * Wait for the request to finish executing. |
| 2721 | */ |
| 2722 | while (targetThread->invokeReq.invokeNeeded) { |
| 2723 | pthread_cond_wait(&targetThread->invokeReq.cv, |
| 2724 | &targetThread->invokeReq.lock); |
| 2725 | } |
| 2726 | dvmUnlockMutex(&targetThread->invokeReq.lock); |
| 2727 | LOGV(" Control has returned from event thread\n"); |
| 2728 | |
| 2729 | /* wait for thread to re-suspend itself */ |
| 2730 | dvmWaitForSuspend(targetThread); |
| 2731 | |
| 2732 | /* |
| 2733 | * Done waiting, switch back to RUNNING. |
| 2734 | */ |
| 2735 | dvmChangeStatus(self, oldStatus); |
| 2736 | |
| 2737 | /* |
| 2738 | * Suspend the threads. We waited for the target thread to suspend |
| 2739 | * itself, so all we need to do is suspend the others. |
| 2740 | * |
| 2741 | * The suspendAllThreads() call will double-suspend the event thread, |
| 2742 | * so we want to resume the target thread once to keep the books straight. |
| 2743 | */ |
| 2744 | if ((options & INVOKE_SINGLE_THREADED) == 0) { |
| 2745 | LOGV(" Suspending all threads\n"); |
| 2746 | dvmSuspendAllThreads(SUSPEND_FOR_DEBUG_EVENT); |
| 2747 | LOGV(" Resuming event thread to balance the count\n"); |
| 2748 | dvmResumeThread(targetThread); |
| 2749 | } |
| 2750 | |
| 2751 | /* |
| 2752 | * Set up the result. |
| 2753 | */ |
| 2754 | *pResultTag = targetThread->invokeReq.resultTag; |
| 2755 | if (isTagPrimitive(targetThread->invokeReq.resultTag)) |
| 2756 | *pResultValue = targetThread->invokeReq.resultValue.j; |
| 2757 | else |
| 2758 | *pResultValue = objectToObjectId(targetThread->invokeReq.resultValue.l); |
| 2759 | *pExceptObj = targetThread->invokeReq.exceptObj; |
| 2760 | err = targetThread->invokeReq.err; |
| 2761 | |
| 2762 | bail: |
| 2763 | return err; |
| 2764 | } |
| 2765 | |
| 2766 | /* |
| 2767 | * Determine the tag type for the return value for this method. |
| 2768 | */ |
| 2769 | static u1 resultTagFromSignature(const Method* method) |
| 2770 | { |
| 2771 | const char* descriptor = dexProtoGetReturnType(&method->prototype); |
| 2772 | return dvmDbgGetSignatureTag(descriptor); |
| 2773 | } |
| 2774 | |
| 2775 | /* |
| 2776 | * Execute the method described by "*pReq". |
The Android Open Source Project | 9940988 | 2009-03-18 22:20:24 -0700 | [diff] [blame] | 2777 | * |
| 2778 | * We're currently in VMWAIT, because we're stopped on a breakpoint. We |
| 2779 | * want to switch to RUNNING while we execute. |
The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 2780 | */ |
| 2781 | void dvmDbgExecuteMethod(DebugInvokeReq* pReq) |
| 2782 | { |
| 2783 | Thread* self = dvmThreadSelf(); |
| 2784 | const Method* meth; |
| 2785 | Object* oldExcept; |
The Android Open Source Project | 9940988 | 2009-03-18 22:20:24 -0700 | [diff] [blame] | 2786 | int oldStatus; |
The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 2787 | |
| 2788 | /* |
| 2789 | * We can be called while an exception is pending in the VM. We need |
| 2790 | * to preserve that across the method invocation. |
| 2791 | */ |
| 2792 | oldExcept = dvmGetException(self); |
The Android Open Source Project | 9940988 | 2009-03-18 22:20:24 -0700 | [diff] [blame] | 2793 | dvmClearException(self); |
| 2794 | |
| 2795 | oldStatus = dvmChangeStatus(self, THREAD_RUNNING); |
The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 2796 | |
| 2797 | /* |
| 2798 | * Translate the method through the vtable, unless we're calling a |
| 2799 | * static method or the debugger wants to suppress it. |
| 2800 | */ |
| 2801 | if ((pReq->options & INVOKE_NONVIRTUAL) != 0 || pReq->obj == NULL) { |
| 2802 | meth = pReq->method; |
| 2803 | } else { |
| 2804 | meth = dvmGetVirtualizedMethod(pReq->clazz, pReq->method); |
| 2805 | } |
| 2806 | assert(meth != NULL); |
| 2807 | |
| 2808 | assert(sizeof(jvalue) == sizeof(u8)); |
| 2809 | |
| 2810 | IF_LOGV() { |
| 2811 | char* desc = dexProtoCopyMethodDescriptor(&meth->prototype); |
| 2812 | LOGV("JDWP invoking method %s.%s %s\n", |
| 2813 | meth->clazz->descriptor, meth->name, desc); |
| 2814 | free(desc); |
| 2815 | } |
| 2816 | |
| 2817 | dvmCallMethodA(self, meth, pReq->obj, &pReq->resultValue, |
| 2818 | (jvalue*)pReq->argArray); |
| 2819 | pReq->exceptObj = objectToObjectId(dvmGetException(self)); |
| 2820 | pReq->resultTag = resultTagFromSignature(meth); |
| 2821 | if (pReq->exceptObj != 0) { |
| 2822 | LOGD(" JDWP invocation returning with exceptObj=%p\n", |
| 2823 | dvmGetException(self)); |
| 2824 | dvmClearException(self); |
| 2825 | /* |
| 2826 | * Nothing should try to use this, but it looks like something is. |
| 2827 | * Make it null to be safe. |
| 2828 | */ |
| 2829 | pReq->resultValue.j = 0; /*0xadadadad;*/ |
| 2830 | } else if (pReq->resultTag == JT_OBJECT) { |
| 2831 | /* if no exception thrown, examine object result more closely */ |
| 2832 | u1 newTag = resultTagFromObject(pReq->resultValue.l); |
| 2833 | if (newTag != pReq->resultTag) { |
| 2834 | LOGVV(" JDWP promoted result from %d to %d\n", |
| 2835 | pReq->resultTag, newTag); |
| 2836 | pReq->resultTag = newTag; |
| 2837 | } |
| 2838 | } |
| 2839 | |
| 2840 | if (oldExcept != NULL) |
| 2841 | dvmSetException(self, oldExcept); |
The Android Open Source Project | 9940988 | 2009-03-18 22:20:24 -0700 | [diff] [blame] | 2842 | dvmChangeStatus(self, oldStatus); |
The Android Open Source Project | f6c3871 | 2009-03-03 19:28:47 -0800 | [diff] [blame] | 2843 | } |
| 2844 | |
| 2845 | // for dvmAddressSetForLine |
| 2846 | typedef struct AddressSetContext { |
| 2847 | bool lastAddressValid; |
| 2848 | u4 lastAddress; |
| 2849 | u4 lineNum; |
| 2850 | AddressSet *pSet; |
| 2851 | } AddressSetContext; |
| 2852 | |
| 2853 | // for dvmAddressSetForLine |
| 2854 | static int addressSetCb (void *cnxt, u4 address, u4 lineNum) |
| 2855 | { |
| 2856 | AddressSetContext *pContext = (AddressSetContext *)cnxt; |
| 2857 | |
| 2858 | if (lineNum == pContext->lineNum) { |
| 2859 | if (!pContext->lastAddressValid) { |
| 2860 | // Everything from this address until the next line change is ours |
| 2861 | pContext->lastAddress = address; |
| 2862 | pContext->lastAddressValid = true; |
| 2863 | } |
| 2864 | // else, If we're already in a valid range for this lineNum, |
| 2865 | // just keep going (shouldn't really happen) |
| 2866 | } else if (pContext->lastAddressValid) { // and the line number is new |
| 2867 | u4 i; |
| 2868 | // Add everything from the last entry up until here to the set |
| 2869 | for (i = pContext->lastAddress; i < address; i++) { |
| 2870 | dvmAddressSetSet(pContext->pSet, i); |
| 2871 | } |
| 2872 | |
| 2873 | pContext->lastAddressValid = false; |
| 2874 | } |
| 2875 | |
| 2876 | // there may be multiple entries for a line |
| 2877 | return 0; |
| 2878 | } |
| 2879 | /* |
| 2880 | * Build up a set of bytecode addresses associated with a line number |
| 2881 | */ |
| 2882 | const AddressSet *dvmAddressSetForLine(const Method* method, int line) |
| 2883 | { |
| 2884 | AddressSet *result; |
| 2885 | const DexFile *pDexFile = method->clazz->pDvmDex->pDexFile; |
| 2886 | u4 insnsSize = dvmGetMethodInsnsSize(method); |
| 2887 | AddressSetContext context; |
| 2888 | |
| 2889 | result = calloc(1, sizeof(AddressSet) + (insnsSize/8) + 1); |
| 2890 | result->setSize = insnsSize; |
| 2891 | |
| 2892 | memset(&context, 0, sizeof(context)); |
| 2893 | context.pSet = result; |
| 2894 | context.lineNum = line; |
| 2895 | context.lastAddressValid = false; |
| 2896 | |
| 2897 | dexDecodeDebugInfo(pDexFile, dvmGetMethodCode(method), |
| 2898 | method->clazz->descriptor, |
| 2899 | method->prototype.protoIdx, |
| 2900 | method->accessFlags, |
| 2901 | addressSetCb, NULL, &context); |
| 2902 | |
| 2903 | // If the line number was the last in the position table... |
| 2904 | if (context.lastAddressValid) { |
| 2905 | u4 i; |
| 2906 | for (i = context.lastAddress; i < insnsSize; i++) { |
| 2907 | dvmAddressSetSet(result, i); |
| 2908 | } |
| 2909 | } |
| 2910 | |
| 2911 | return result; |
| 2912 | } |
| 2913 | |
| 2914 | |
| 2915 | /* |
| 2916 | * =========================================================================== |
| 2917 | * Dalvik Debug Monitor support |
| 2918 | * =========================================================================== |
| 2919 | */ |
| 2920 | |
| 2921 | /* |
| 2922 | * We have received a DDM packet over JDWP. Hand it off to the VM. |
| 2923 | */ |
| 2924 | bool dvmDbgDdmHandlePacket(const u1* buf, int dataLen, u1** pReplyBuf, |
| 2925 | int* pReplyLen) |
| 2926 | { |
| 2927 | return dvmDdmHandlePacket(buf, dataLen, pReplyBuf, pReplyLen); |
| 2928 | } |
| 2929 | |
| 2930 | /* |
| 2931 | * First DDM packet has arrived over JDWP. Notify the press. |
| 2932 | */ |
| 2933 | void dvmDbgDdmConnected(void) |
| 2934 | { |
| 2935 | dvmDdmConnected(); |
| 2936 | } |
| 2937 | |
| 2938 | /* |
| 2939 | * JDWP connection has dropped. |
| 2940 | */ |
| 2941 | void dvmDbgDdmDisconnected(void) |
| 2942 | { |
| 2943 | dvmDdmDisconnected(); |
| 2944 | } |
| 2945 | |
| 2946 | /* |
| 2947 | * Send up a JDWP event packet with a DDM chunk in it. |
| 2948 | */ |
| 2949 | void dvmDbgDdmSendChunk(int type, int len, const u1* buf) |
| 2950 | { |
| 2951 | if (gDvm.jdwpState == NULL) { |
| 2952 | LOGI("Debugger thread not active, ignoring DDM send (t=0x%08x l=%d)\n", |
| 2953 | type, len); |
| 2954 | return; |
| 2955 | } |
| 2956 | |
| 2957 | dvmJdwpDdmSendChunk(gDvm.jdwpState, type, len, buf); |
| 2958 | } |
| 2959 | |