Mercurial > hg > truffle
annotate agent/src/os/bsd/MacosxDebuggerLocal.m @ 17788:f2294a37e723
8034034: [parfait] JNI exc. pending in hotspot/agent/src/os/bsd/MacosxDebuggerLocal.m
Summary: added JNI exception check in the appropriate places
Reviewed-by: sla, zgu
| author | ccheung |
|---|---|
| date | Thu, 20 Mar 2014 14:25:22 -0700 |
| parents | e4614b063fe1 |
| children |
| rev | line source |
|---|---|
| 4006 | 1 /* |
| 8750 | 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| 4006 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include <objc/objc-runtime.h> | |
| 26 #import <Foundation/Foundation.h> | |
| 27 #import <JavaNativeFoundation/JavaNativeFoundation.h> | |
| 28 | |
| 29 #include <JavaVM/jni.h> | |
| 30 | |
| 31 #import <mach/mach.h> | |
| 32 #import <mach/mach_types.h> | |
| 33 #import <sys/sysctl.h> | |
| 6782 | 34 #import <stdio.h> |
| 35 #import <stdarg.h> | |
| 4006 | 36 #import <stdlib.h> |
| 6782 | 37 #import <strings.h> |
| 38 #import <dlfcn.h> | |
| 39 #import <limits.h> | |
| 40 #import <errno.h> | |
|
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41 #import <sys/types.h> |
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42 #import <sys/ptrace.h> |
| 8750 | 43 #include "libproc_impl.h" |
| 4006 | 44 |
| 8750 | 45 #define UNSUPPORTED_ARCH "Unsupported architecture!" |
| 46 | |
| 47 #if defined(x86_64) && !defined(amd64) | |
| 48 #define amd64 1 | |
| 49 #endif | |
| 50 | |
| 51 #if amd64 | |
| 52 #include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h" | |
| 53 #else | |
| 54 #error UNSUPPORTED_ARCH | |
| 55 #endif | |
| 4006 | 56 |
| 57 static jfieldID symbolicatorID = 0; // set in _init0 | |
| 58 static jfieldID taskID = 0; // set in _init0 | |
| 59 | |
| 8750 | 60 static jfieldID p_ps_prochandle_ID = 0; |
| 61 static jfieldID loadObjectList_ID = 0; | |
| 62 static jmethodID listAdd_ID = 0; | |
| 63 | |
| 64 static jmethodID createClosestSymbol_ID = 0; | |
| 65 static jmethodID createLoadObject_ID = 0; | |
| 66 static jmethodID getJavaThreadsInfo_ID = 0; | |
| 67 | |
| 68 // indicator if thread id (lwpid_t) was set | |
| 69 static bool _threads_filled = false; | |
| 70 | |
| 4006 | 71 static void putSymbolicator(JNIEnv *env, jobject this_obj, id symbolicator) { |
| 72 (*env)->SetLongField(env, this_obj, symbolicatorID, (jlong)(intptr_t)symbolicator); | |
| 73 } | |
| 74 | |
| 75 static id getSymbolicator(JNIEnv *env, jobject this_obj) { | |
| 76 jlong ptr = (*env)->GetLongField(env, this_obj, symbolicatorID); | |
| 77 return (id)(intptr_t)ptr; | |
| 78 } | |
| 79 | |
| 80 static void putTask(JNIEnv *env, jobject this_obj, task_t task) { | |
| 81 (*env)->SetLongField(env, this_obj, taskID, (jlong)task); | |
| 82 } | |
| 83 | |
| 84 static task_t getTask(JNIEnv *env, jobject this_obj) { | |
| 85 jlong ptr = (*env)->GetLongField(env, this_obj, taskID); | |
| 86 return (task_t)ptr; | |
| 87 } | |
| 88 | |
| 89 #define CHECK_EXCEPTION_(value) if ((*env)->ExceptionOccurred(env)) { return value; } | |
| 90 #define CHECK_EXCEPTION if ((*env)->ExceptionOccurred(env)) { return;} | |
| 91 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throw_new_debugger_exception(env, str); return value; } | |
| 92 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throw_new_debugger_exception(env, str); return;} | |
| 6782 | 93 #define CHECK_EXCEPTION_CLEAR if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); } |
| 94 #define CHECK_EXCEPTION_CLEAR_VOID if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); return; } | |
| 95 #define CHECK_EXCEPTION_CLEAR_(value) if ((*env)->ExceptionOccurred(env)) { (*env)->ExceptionClear(env); return value; } | |
| 4006 | 96 |
| 97 static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) { | |
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98 jclass exceptionClass = (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"); |
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99 CHECK_EXCEPTION; |
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100 (*env)->ThrowNew(env, exceptionClass, errMsg); |
| 4006 | 101 } |
| 102 | |
| 8750 | 103 static struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj) { |
| 104 jlong ptr = (*env)->GetLongField(env, this_obj, p_ps_prochandle_ID); | |
| 105 return (struct ps_prochandle*)(intptr_t)ptr; | |
| 106 } | |
| 107 | |
| 4006 | 108 #if defined(__i386__) |
| 109 #define hsdb_thread_state_t x86_thread_state32_t | |
| 110 #define hsdb_float_state_t x86_float_state32_t | |
| 111 #define HSDB_THREAD_STATE x86_THREAD_STATE32 | |
| 112 #define HSDB_FLOAT_STATE x86_FLOAT_STATE32 | |
| 113 #define HSDB_THREAD_STATE_COUNT x86_THREAD_STATE32_COUNT | |
| 114 #define HSDB_FLOAT_STATE_COUNT x86_FLOAT_STATE32_COUNT | |
| 115 #elif defined(__x86_64__) | |
| 116 #define hsdb_thread_state_t x86_thread_state64_t | |
| 117 #define hsdb_float_state_t x86_float_state64_t | |
| 118 #define HSDB_THREAD_STATE x86_THREAD_STATE64 | |
| 119 #define HSDB_FLOAT_STATE x86_FLOAT_STATE64 | |
| 120 #define HSDB_THREAD_STATE_COUNT x86_THREAD_STATE64_COUNT | |
| 121 #define HSDB_FLOAT_STATE_COUNT x86_FLOAT_STATE64_COUNT | |
| 122 #else | |
| 8750 | 123 #error UNSUPPORTED_ARCH |
| 4006 | 124 #endif |
| 125 | |
| 126 /* | |
| 127 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 128 * Method: init0 | |
| 129 * Signature: ()V | |
| 130 */ | |
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131 JNIEXPORT void JNICALL |
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132 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_init0(JNIEnv *env, jclass cls) { |
| 4006 | 133 symbolicatorID = (*env)->GetFieldID(env, cls, "symbolicator", "J"); |
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134 CHECK_EXCEPTION; |
| 4006 | 135 taskID = (*env)->GetFieldID(env, cls, "task", "J"); |
| 136 CHECK_EXCEPTION; | |
| 8750 | 137 |
| 138 // for core file | |
| 139 p_ps_prochandle_ID = (*env)->GetFieldID(env, cls, "p_ps_prochandle", "J"); | |
| 140 CHECK_EXCEPTION; | |
| 141 loadObjectList_ID = (*env)->GetFieldID(env, cls, "loadObjectList", "Ljava/util/List;"); | |
| 142 CHECK_EXCEPTION; | |
| 143 | |
| 144 // methods we use | |
| 145 createClosestSymbol_ID = (*env)->GetMethodID(env, cls, "createClosestSymbol", | |
| 146 "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;"); | |
| 147 CHECK_EXCEPTION; | |
| 148 createLoadObject_ID = (*env)->GetMethodID(env, cls, "createLoadObject", | |
| 149 "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;"); | |
| 150 CHECK_EXCEPTION; | |
| 151 | |
| 152 // java.util.List method we call | |
| 153 jclass listClass = (*env)->FindClass(env, "java/util/List"); | |
| 154 CHECK_EXCEPTION; | |
| 155 listAdd_ID = (*env)->GetMethodID(env, listClass, "add", "(Ljava/lang/Object;)Z"); | |
| 156 CHECK_EXCEPTION; | |
| 157 getJavaThreadsInfo_ID = (*env)->GetMethodID(env, cls, "getJavaThreadsInfo", | |
| 158 "()[J"); | |
| 159 CHECK_EXCEPTION; | |
| 160 | |
| 161 init_libproc(getenv("LIBSAPROC_DEBUG") != NULL); | |
| 162 } | |
| 163 | |
| 164 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getAddressSize | |
| 165 (JNIEnv *env, jclass cls) | |
| 166 { | |
| 167 #ifdef _LP64 | |
| 168 return 8; | |
| 169 #else | |
| 170 #error UNSUPPORTED_ARCH | |
| 171 #endif | |
| 172 } | |
| 173 | |
| 174 /** called by Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0 */ | |
| 175 jlong lookupByNameIncore( | |
| 176 JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jstring objectName, jstring symbolName) | |
| 177 { | |
| 178 const char *objectName_cstr, *symbolName_cstr; | |
| 179 jlong addr; | |
| 180 jboolean isCopy; | |
| 181 objectName_cstr = NULL; | |
| 182 if (objectName != NULL) { | |
| 183 objectName_cstr = (*env)->GetStringUTFChars(env, objectName, &isCopy); | |
| 184 CHECK_EXCEPTION_(0); | |
| 185 } | |
| 186 symbolName_cstr = (*env)->GetStringUTFChars(env, symbolName, &isCopy); | |
| 187 CHECK_EXCEPTION_(0); | |
| 188 | |
| 189 print_debug("look for %s \n", symbolName_cstr); | |
| 190 addr = (jlong) lookup_symbol(ph, objectName_cstr, symbolName_cstr); | |
| 191 | |
| 192 if (objectName_cstr != NULL) { | |
| 193 (*env)->ReleaseStringUTFChars(env, objectName, objectName_cstr); | |
| 194 } | |
| 195 (*env)->ReleaseStringUTFChars(env, symbolName, symbolName_cstr); | |
| 196 return addr; | |
| 4006 | 197 } |
| 198 | |
| 199 /* | |
| 200 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 201 * Method: lookupByName0 | |
| 202 * Signature: (Ljava/lang/String;Ljava/lang/String;)J | |
| 203 */ | |
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204 JNIEXPORT jlong JNICALL |
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205 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0( |
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206 JNIEnv *env, jobject this_obj, |
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207 jstring objectName, jstring symbolName) |
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208 { |
| 8750 | 209 struct ps_prochandle* ph = get_proc_handle(env, this_obj); |
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210 if (ph != NULL && ph->core != NULL) { |
| 8750 | 211 return lookupByNameIncore(env, ph, this_obj, objectName, symbolName); |
| 212 } | |
| 213 | |
| 4006 | 214 jlong address = 0; |
| 215 | |
| 216 JNF_COCOA_ENTER(env); | |
| 217 NSString *symbolNameString = JNFJavaToNSString(env, symbolName); | |
| 218 | |
| 8750 | 219 print_debug("lookupInProcess called for %s\n", [symbolNameString UTF8String]); |
| 4006 | 220 |
| 221 id symbolicator = getSymbolicator(env, this_obj); | |
| 222 if (symbolicator != nil) { | |
| 223 uint64_t (*dynamicCall)(id, SEL, NSString *) = (uint64_t (*)(id, SEL, NSString *))&objc_msgSend; | |
| 224 address = (jlong) dynamicCall(symbolicator, @selector(addressForSymbol:), symbolNameString); | |
| 225 } | |
| 226 | |
| 8750 | 227 print_debug("address of symbol %s = %llx\n", [symbolNameString UTF8String], address); |
| 4006 | 228 JNF_COCOA_EXIT(env); |
| 229 | |
| 230 return address; | |
| 231 } | |
| 232 | |
| 233 /* | |
| 234 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 8750 | 235 * Method: lookupByAddress0 |
| 236 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; | |
| 237 */ | |
| 238 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByAddress0 | |
| 239 (JNIEnv *env, jobject this_obj, jlong addr) { | |
| 240 uintptr_t offset; | |
| 241 const char* sym = NULL; | |
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242 jstring sym_string; |
| 8750 | 243 |
| 244 struct ps_prochandle* ph = get_proc_handle(env, this_obj); | |
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245 if (ph != NULL && ph->core != NULL) { |
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246 sym = symbol_for_pc(ph, (uintptr_t) addr, &offset); |
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247 if (sym == NULL) return 0; |
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248 sym_string = (*env)->NewStringUTF(env, sym); |
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249 CHECK_EXCEPTION_(0); |
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250 return (*env)->CallObjectMethod(env, this_obj, createClosestSymbol_ID, |
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251 sym_string, (jlong)offset); |
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252 } |
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253 return 0; |
| 8750 | 254 } |
| 255 | |
| 256 /** called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0 */ | |
| 257 jbyteArray readBytesFromCore( | |
| 258 JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jlong addr, jlong numBytes) | |
| 259 { | |
| 260 jboolean isCopy; | |
| 261 jbyteArray array; | |
| 262 jbyte *bufPtr; | |
| 263 ps_err_e err; | |
| 264 | |
| 265 array = (*env)->NewByteArray(env, numBytes); | |
| 266 CHECK_EXCEPTION_(0); | |
| 267 bufPtr = (*env)->GetByteArrayElements(env, array, &isCopy); | |
| 268 CHECK_EXCEPTION_(0); | |
| 269 | |
| 270 err = ps_pread(ph, (psaddr_t) (uintptr_t)addr, bufPtr, numBytes); | |
| 271 (*env)->ReleaseByteArrayElements(env, array, bufPtr, 0); | |
| 272 return (err == PS_OK)? array : 0; | |
| 273 } | |
| 274 | |
| 275 /* | |
| 276 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 4006 | 277 * Method: readBytesFromProcess0 |
| 278 * Signature: (JJ)Lsun/jvm/hotspot/debugger/ReadResult; | |
| 279 */ | |
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280 JNIEXPORT jbyteArray JNICALL |
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281 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0( |
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282 JNIEnv *env, jobject this_obj, |
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283 jlong addr, jlong numBytes) |
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284 { |
| 8750 | 285 print_debug("readBytesFromProcess called. addr = %llx numBytes = %lld\n", addr, numBytes); |
| 4006 | 286 |
| 287 // must allocate storage instead of using former parameter buf | |
| 288 jbyteArray array; | |
| 8750 | 289 |
| 290 struct ps_prochandle* ph = get_proc_handle(env, this_obj); | |
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291 if (ph != NULL && ph->core != NULL) { |
| 8750 | 292 return readBytesFromCore(env, ph, this_obj, addr, numBytes); |
| 293 } | |
| 4006 | 294 |
| 295 array = (*env)->NewByteArray(env, numBytes); | |
| 296 CHECK_EXCEPTION_(0); | |
| 297 | |
| 298 unsigned long alignedAddress; | |
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299 unsigned long alignedLength = 0; |
| 4006 | 300 kern_return_t result; |
| 301 vm_offset_t *pages; | |
| 302 int *mapped; | |
| 303 long pageCount; | |
| 304 uint byteCount; | |
| 305 int i; | |
| 306 unsigned long remaining; | |
| 307 | |
| 308 alignedAddress = trunc_page(addr); | |
| 309 if (addr != alignedAddress) { | |
| 310 alignedLength += addr - alignedAddress; | |
| 311 } | |
| 312 alignedLength = round_page(numBytes); | |
| 313 pageCount = alignedLength/vm_page_size; | |
| 314 | |
| 315 // Allocate storage for pages and flags. | |
| 316 pages = malloc(pageCount * sizeof(vm_offset_t)); | |
| 317 mapped = calloc(pageCount, sizeof(int)); | |
| 318 | |
| 319 task_t gTask = getTask(env, this_obj); | |
| 320 // Try to read each of the pages. | |
| 321 for (i = 0; i < pageCount; i++) { | |
| 322 result = vm_read(gTask, alignedAddress + i*vm_page_size, vm_page_size, | |
| 323 &pages[i], &byteCount); | |
| 324 mapped[i] = (result == KERN_SUCCESS); | |
| 325 // assume all failures are unmapped pages | |
| 326 } | |
| 327 | |
| 8750 | 328 print_debug("%ld pages\n", pageCount); |
| 4006 | 329 |
| 330 remaining = numBytes; | |
| 331 | |
| 332 for (i = 0; i < pageCount; i++) { | |
| 333 unsigned long len = vm_page_size; | |
| 334 unsigned long start = 0; | |
| 335 | |
| 336 if (i == 0) { | |
| 337 start = addr - alignedAddress; | |
| 338 len = vm_page_size - start; | |
| 339 } | |
| 340 | |
| 341 if (i == (pageCount - 1)) { | |
| 342 len = remaining; | |
| 343 } | |
| 344 | |
| 345 if (mapped[i]) { | |
| 8750 | 346 print_debug("page %d mapped (len %ld start %ld)\n", i, len, start); |
| 4006 | 347 (*env)->SetByteArrayRegion(env, array, 0, len, ((jbyte *) pages[i] + start)); |
| 348 vm_deallocate(mach_task_self(), pages[i], vm_page_size); | |
| 349 } | |
| 350 | |
| 351 remaining -= len; | |
| 352 } | |
| 353 | |
| 354 free (pages); | |
| 355 free (mapped); | |
| 356 return array; | |
| 357 } | |
| 358 | |
| 8750 | 359 /** Only used for core file reading, set thread_id for threads which is got after core file parsed. |
| 360 * Thread context is available in Mach-O core file but thread id is not. We can get thread id | |
| 361 * from Threads which store all java threads information when they are created. Here we can identify | |
| 362 * them as java threads by checking if a thread's rsp or rbp within a java thread's stack. | |
| 363 * Note Macosx uses unique_thread_id which is different from other platforms though printed ids | |
| 364 * are still pthread id. Function BsdDebuggerLocal.getJavaThreadsInfo returns an array of long | |
| 365 * integers to host all java threads' id, stack_start, stack_end as: | |
| 366 * [uid0, stack_start0, stack_end0, uid1, stack_start1, stack_end1, ...] | |
| 367 * | |
| 368 * The work cannot be done at init0 since Threads is not available yet(VM not initialized yet). | |
| 369 * This function should be called only once if succeeded | |
| 370 */ | |
| 371 bool fill_java_threads(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) { | |
| 372 int n = 0, i = 0, j; | |
| 373 struct reg regs; | |
| 374 | |
| 375 jlongArray thrinfos = (*env)->CallObjectMethod(env, this_obj, getJavaThreadsInfo_ID); | |
| 376 CHECK_EXCEPTION_(false); | |
| 377 int len = (int)(*env)->GetArrayLength(env, thrinfos); | |
| 378 uint64_t* cinfos = (uint64_t *)(*env)->GetLongArrayElements(env, thrinfos, NULL); | |
| 379 CHECK_EXCEPTION_(false); | |
| 380 n = get_num_threads(ph); | |
| 381 print_debug("fill_java_threads called, num_of_thread = %d\n", n); | |
| 382 for (i = 0; i < n; i++) { | |
| 383 if (!get_nth_lwp_regs(ph, i, ®s)) { | |
| 384 print_debug("Could not get regs of thread %d, already set!\n", i); | |
| 385 return false; | |
| 386 } | |
| 387 for (j = 0; j < len; j += 3) { | |
| 388 lwpid_t uid = cinfos[j]; | |
| 389 uint64_t beg = cinfos[j + 1]; | |
| 390 uint64_t end = cinfos[j + 2]; | |
| 391 if ((regs.r_rsp < end && regs.r_rsp >= beg) || | |
| 392 (regs.r_rbp < end && regs.r_rbp >= beg)) { | |
| 393 set_lwp_id(ph, i, uid); | |
| 394 break; | |
| 395 } | |
| 396 } | |
| 397 } | |
| 398 (*env)->ReleaseLongArrayElements(env, thrinfos, (jlong*)cinfos, 0); | |
| 399 CHECK_EXCEPTION_(false); | |
| 400 return true; | |
| 401 } | |
| 402 | |
| 403 /* For core file only, called from | |
| 404 * Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0 | |
| 405 */ | |
|
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406 jlongArray getThreadIntegerRegisterSetFromCore(JNIEnv *env, jobject this_obj, long lwp_id, struct ps_prochandle* ph) { |
| 8750 | 407 if (!_threads_filled) { |
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408 if (!fill_java_threads(env, this_obj, ph)) { |
| 8750 | 409 throw_new_debugger_exception(env, "Failed to fill in threads"); |
| 410 return 0; | |
| 411 } else { | |
| 412 _threads_filled = true; | |
| 413 } | |
| 414 } | |
| 415 | |
| 416 struct reg gregs; | |
| 417 jboolean isCopy; | |
| 418 jlongArray array; | |
| 419 jlong *regs; | |
| 420 | |
| 421 if (get_lwp_regs(ph, lwp_id, &gregs) != true) { | |
| 422 THROW_NEW_DEBUGGER_EXCEPTION_("get_thread_regs failed for a lwp", 0); | |
| 423 } | |
| 424 | |
| 425 #undef NPRGREG | |
| 426 #undef REG_INDEX | |
| 427 #if amd64 | |
| 428 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG | |
| 429 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg | |
| 430 | |
| 431 array = (*env)->NewLongArray(env, NPRGREG); | |
| 432 CHECK_EXCEPTION_(0); | |
| 433 regs = (*env)->GetLongArrayElements(env, array, &isCopy); | |
| 434 | |
| 435 regs[REG_INDEX(R15)] = gregs.r_r15; | |
| 436 regs[REG_INDEX(R14)] = gregs.r_r14; | |
| 437 regs[REG_INDEX(R13)] = gregs.r_r13; | |
| 438 regs[REG_INDEX(R12)] = gregs.r_r12; | |
| 439 regs[REG_INDEX(RBP)] = gregs.r_rbp; | |
| 440 regs[REG_INDEX(RBX)] = gregs.r_rbx; | |
| 441 regs[REG_INDEX(R11)] = gregs.r_r11; | |
| 442 regs[REG_INDEX(R10)] = gregs.r_r10; | |
| 443 regs[REG_INDEX(R9)] = gregs.r_r9; | |
| 444 regs[REG_INDEX(R8)] = gregs.r_r8; | |
| 445 regs[REG_INDEX(RAX)] = gregs.r_rax; | |
| 446 regs[REG_INDEX(RCX)] = gregs.r_rcx; | |
| 447 regs[REG_INDEX(RDX)] = gregs.r_rdx; | |
| 448 regs[REG_INDEX(RSI)] = gregs.r_rsi; | |
| 449 regs[REG_INDEX(RDI)] = gregs.r_rdi; | |
| 450 regs[REG_INDEX(RIP)] = gregs.r_rip; | |
| 451 regs[REG_INDEX(CS)] = gregs.r_cs; | |
| 452 regs[REG_INDEX(RSP)] = gregs.r_rsp; | |
| 453 regs[REG_INDEX(SS)] = gregs.r_ss; | |
| 454 regs[REG_INDEX(FSBASE)] = 0; | |
| 455 regs[REG_INDEX(GSBASE)] = 0; | |
| 456 regs[REG_INDEX(DS)] = gregs.r_ds; | |
| 457 regs[REG_INDEX(ES)] = gregs.r_es; | |
| 458 regs[REG_INDEX(FS)] = gregs.r_fs; | |
| 459 regs[REG_INDEX(GS)] = gregs.r_gs; | |
| 460 regs[REG_INDEX(TRAPNO)] = gregs.r_trapno; | |
| 461 regs[REG_INDEX(RFL)] = gregs.r_rflags; | |
| 462 | |
| 463 #endif /* amd64 */ | |
| 464 (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT); | |
| 465 return array; | |
| 466 } | |
|
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467 |
| 4006 | 468 /* |
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469 * Lookup the thread_t that corresponds to the given thread_id. |
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470 * The thread_id should be the result from calling thread_info() with THREAD_IDENTIFIER_INFO |
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471 * and reading the m_ident_info.thread_id returned. |
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472 * The returned thread_t is the mach send right to the kernel port for the corresponding thread. |
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473 * |
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474 * We cannot simply use the OSThread._thread_id field in the JVM. This is set to ::mach_thread_self() |
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475 * in the VM, but that thread port is not valid for a remote debugger to access the thread. |
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476 */ |
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477 thread_t |
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478 lookupThreadFromThreadId(task_t task, jlong thread_id) { |
| 8750 | 479 print_debug("lookupThreadFromThreadId thread_id=0x%llx\n", thread_id); |
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480 |
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481 thread_array_t thread_list = NULL; |
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482 mach_msg_type_number_t thread_list_count = 0; |
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483 thread_t result_thread = 0; |
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484 int i; |
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485 |
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486 // get the list of all the send rights |
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487 kern_return_t result = task_threads(task, &thread_list, &thread_list_count); |
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488 if (result != KERN_SUCCESS) { |
| 8750 | 489 print_debug("task_threads returned 0x%x\n", result); |
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490 return 0; |
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491 } |
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492 |
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493 for(i = 0 ; i < thread_list_count; i++) { |
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494 thread_identifier_info_data_t m_ident_info; |
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495 mach_msg_type_number_t count = THREAD_IDENTIFIER_INFO_COUNT; |
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496 |
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497 // get the THREAD_IDENTIFIER_INFO for the send right |
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498 result = thread_info(thread_list[i], THREAD_IDENTIFIER_INFO, (thread_info_t) &m_ident_info, &count); |
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499 if (result != KERN_SUCCESS) { |
| 8750 | 500 print_debug("thread_info returned 0x%x\n", result); |
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501 break; |
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502 } |
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503 |
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504 // if this is the one we're looking for, return the send right |
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505 if (thread_id == m_ident_info.thread_id) |
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506 { |
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507 result_thread = thread_list[i]; |
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508 break; |
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509 } |
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510 } |
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511 |
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512 vm_size_t thread_list_size = (vm_size_t) (thread_list_count * sizeof (thread_t)); |
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513 vm_deallocate(mach_task_self(), (vm_address_t) thread_list, thread_list_count); |
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514 |
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515 return result_thread; |
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516 } |
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517 |
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518 |
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519 /* |
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520 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal |
| 4006 | 521 * Method: getThreadIntegerRegisterSet0 |
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522 * Signature: (J)[J |
| 4006 | 523 */ |
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524 JNIEXPORT jlongArray JNICALL |
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525 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0( |
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526 JNIEnv *env, jobject this_obj, |
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527 jlong thread_id) |
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528 { |
| 8750 | 529 print_debug("getThreadRegisterSet0 called\n"); |
| 530 | |
| 531 struct ps_prochandle* ph = get_proc_handle(env, this_obj); | |
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532 if (ph != NULL && ph->core != NULL) { |
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533 return getThreadIntegerRegisterSetFromCore(env, this_obj, thread_id, ph); |
| 8750 | 534 } |
| 4006 | 535 |
| 536 kern_return_t result; | |
| 537 thread_t tid; | |
| 538 mach_msg_type_number_t count = HSDB_THREAD_STATE_COUNT; | |
| 539 hsdb_thread_state_t state; | |
| 540 jlongArray registerArray; | |
| 541 jlong *primitiveArray; | |
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542 task_t gTask = getTask(env, this_obj); |
| 4006 | 543 |
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544 tid = lookupThreadFromThreadId(gTask, thread_id); |
| 4006 | 545 |
| 546 result = thread_get_state(tid, HSDB_THREAD_STATE, (thread_state_t)&state, &count); | |
| 547 | |
| 548 if (result != KERN_SUCCESS) { | |
| 8750 | 549 print_error("getregs: thread_get_state(%d) failed (%d)\n", tid, result); |
| 4006 | 550 return NULL; |
| 551 } | |
| 552 | |
| 8750 | 553 #if amd64 |
| 554 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG | |
| 555 #undef REG_INDEX | |
| 556 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg | |
| 557 | |
| 558 // 64 bit | |
| 559 print_debug("Getting threads for a 64-bit process\n"); | |
| 560 registerArray = (*env)->NewLongArray(env, NPRGREG); | |
| 561 CHECK_EXCEPTION_(0); | |
| 562 primitiveArray = (*env)->GetLongArrayElements(env, registerArray, NULL); | |
| 4006 | 563 |
| 8750 | 564 primitiveArray[REG_INDEX(R15)] = state.__r15; |
| 565 primitiveArray[REG_INDEX(R14)] = state.__r14; | |
| 566 primitiveArray[REG_INDEX(R13)] = state.__r13; | |
| 567 primitiveArray[REG_INDEX(R12)] = state.__r12; | |
| 568 primitiveArray[REG_INDEX(R11)] = state.__r11; | |
| 569 primitiveArray[REG_INDEX(R10)] = state.__r10; | |
| 570 primitiveArray[REG_INDEX(R9)] = state.__r9; | |
| 571 primitiveArray[REG_INDEX(R8)] = state.__r8; | |
| 572 primitiveArray[REG_INDEX(RDI)] = state.__rdi; | |
| 573 primitiveArray[REG_INDEX(RSI)] = state.__rsi; | |
| 574 primitiveArray[REG_INDEX(RBP)] = state.__rbp; | |
| 575 primitiveArray[REG_INDEX(RBX)] = state.__rbx; | |
| 576 primitiveArray[REG_INDEX(RDX)] = state.__rdx; | |
| 577 primitiveArray[REG_INDEX(RCX)] = state.__rcx; | |
| 578 primitiveArray[REG_INDEX(RAX)] = state.__rax; | |
| 579 primitiveArray[REG_INDEX(TRAPNO)] = 0; // trapno, not used | |
| 580 primitiveArray[REG_INDEX(ERR)] = 0; // err, not used | |
| 581 primitiveArray[REG_INDEX(RIP)] = state.__rip; | |
| 582 primitiveArray[REG_INDEX(CS)] = state.__cs; | |
| 583 primitiveArray[REG_INDEX(RFL)] = state.__rflags; | |
| 584 primitiveArray[REG_INDEX(RSP)] = state.__rsp; | |
| 585 primitiveArray[REG_INDEX(SS)] = 0; // We don't have SS | |
| 586 primitiveArray[REG_INDEX(FS)] = state.__fs; | |
| 587 primitiveArray[REG_INDEX(GS)] = state.__gs; | |
| 588 primitiveArray[REG_INDEX(ES)] = 0; | |
| 589 primitiveArray[REG_INDEX(DS)] = 0; | |
| 590 primitiveArray[REG_INDEX(FSBASE)] = 0; | |
| 591 primitiveArray[REG_INDEX(GSBASE)] = 0; | |
| 592 print_debug("set registers\n"); | |
| 4006 | 593 |
| 8750 | 594 (*env)->ReleaseLongArrayElements(env, registerArray, primitiveArray, 0); |
| 4006 | 595 |
| 596 #else | |
| 8750 | 597 #error UNSUPPORTED_ARCH |
| 598 #endif /* amd64 */ | |
| 4006 | 599 |
| 600 return registerArray; | |
| 601 } | |
| 602 | |
| 603 /* | |
|
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604 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal |
| 4006 | 605 * Method: translateTID0 |
| 606 * Signature: (I)I | |
| 607 */ | |
| 608 JNIEXPORT jint JNICALL | |
|
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609 Java_sun_jvm_hotspot_debugger_macosx_MacOSXDebuggerLocal_translateTID0( |
|
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610 JNIEnv *env, jobject this_obj, jint tid) |
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611 { |
| 8750 | 612 print_debug("translateTID0 called on tid = 0x%x\n", (int)tid); |
| 4006 | 613 |
| 614 kern_return_t result; | |
| 615 thread_t foreign_tid, usable_tid; | |
| 616 mach_msg_type_name_t type; | |
|
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617 |
| 4006 | 618 foreign_tid = tid; |
| 619 | |
| 620 task_t gTask = getTask(env, this_obj); | |
| 621 result = mach_port_extract_right(gTask, foreign_tid, | |
| 622 MACH_MSG_TYPE_COPY_SEND, | |
| 623 &usable_tid, &type); | |
| 624 if (result != KERN_SUCCESS) | |
| 625 return -1; | |
| 626 | |
| 8750 | 627 print_debug("translateTID0: 0x%x -> 0x%x\n", foreign_tid, usable_tid); |
| 4006 | 628 |
| 629 return (jint) usable_tid; | |
| 630 } | |
| 631 | |
|
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632 |
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633 static bool ptrace_continue(pid_t pid, int signal) { |
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634 // pass the signal to the process so we don't swallow it |
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635 int res; |
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636 if ((res = ptrace(PT_CONTINUE, pid, (caddr_t)1, signal)) < 0) { |
| 8750 | 637 print_error("attach: ptrace(PT_CONTINUE, %d) failed with %d\n", pid, res); |
|
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638 return false; |
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639 } |
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640 return true; |
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641 } |
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642 |
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643 // waits until the ATTACH has stopped the process |
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644 // by signal SIGSTOP |
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645 static bool ptrace_waitpid(pid_t pid) { |
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646 int ret; |
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647 int status; |
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648 while (true) { |
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649 // Wait for debuggee to stop. |
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650 ret = waitpid(pid, &status, 0); |
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651 if (ret >= 0) { |
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652 if (WIFSTOPPED(status)) { |
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653 // Any signal will stop the thread, make sure it is SIGSTOP. Otherwise SIGSTOP |
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654 // will still be pending and delivered when the process is DETACHED and the process |
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655 // will go to sleep. |
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656 if (WSTOPSIG(status) == SIGSTOP) { |
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657 // Debuggee stopped by SIGSTOP. |
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658 return true; |
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659 } |
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660 if (!ptrace_continue(pid, WSTOPSIG(status))) { |
| 8750 | 661 print_error("attach: Failed to correctly attach to VM. VM might HANG! [PTRACE_CONT failed, stopped by %d]\n", WSTOPSIG(status)); |
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662 return false; |
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663 } |
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664 } else { |
| 8750 | 665 print_error("attach: waitpid(): Child process exited/terminated (status = 0x%x)\n", status); |
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666 return false; |
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667 } |
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668 } else { |
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669 switch (errno) { |
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670 case EINTR: |
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671 continue; |
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672 break; |
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673 case ECHILD: |
| 8750 | 674 print_error("attach: waitpid() failed. Child process pid (%d) does not exist \n", pid); |
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675 break; |
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676 case EINVAL: |
| 8750 | 677 print_error("attach: waitpid() failed. Invalid options argument.\n"); |
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678 break; |
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679 default: |
| 8750 | 680 print_error("attach: waitpid() failed. Unexpected error %d\n",errno); |
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681 break; |
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682 } |
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683 return false; |
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684 } |
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685 } |
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686 } |
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687 |
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688 // attach to a process/thread specified by "pid" |
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689 static bool ptrace_attach(pid_t pid) { |
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690 int res; |
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691 if ((res = ptrace(PT_ATTACH, pid, 0, 0)) < 0) { |
| 8750 | 692 print_error("ptrace(PT_ATTACH, %d) failed with %d\n", pid, res); |
|
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693 return false; |
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694 } else { |
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695 return ptrace_waitpid(pid); |
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696 } |
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697 } |
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698 |
| 4006 | 699 /* |
| 700 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 701 * Method: attach0 | |
| 702 * Signature: (I)V | |
| 703 */ | |
| 8750 | 704 JNIEXPORT void JNICALL |
|
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705 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__I( |
| 8750 | 706 JNIEnv *env, jobject this_obj, jint jpid) |
|
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707 { |
| 8750 | 708 print_debug("attach0 called for jpid=%d\n", (int)jpid); |
| 709 | |
| 4006 | 710 JNF_COCOA_ENTER(env); |
| 8750 | 711 |
| 4006 | 712 kern_return_t result; |
| 713 task_t gTask = 0; | |
| 714 result = task_for_pid(mach_task_self(), jpid, &gTask); | |
| 715 if (result != KERN_SUCCESS) { | |
|
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716 print_error("attach: task_for_pid(%d) failed: '%s' (%d)\n", (int)jpid, mach_error_string(result), result); |
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717 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process. Could be caused by an incorrect pid or lack of privileges."); |
| 4006 | 718 } |
| 719 putTask(env, this_obj, gTask); | |
| 720 | |
|
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721 // use ptrace to stop the process |
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722 // on os x, ptrace only needs to be called on the process, not the individual threads |
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723 if (ptrace_attach(jpid) != true) { |
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724 mach_port_deallocate(mach_task_self(), gTask); |
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725 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process"); |
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726 } |
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727 |
| 4006 | 728 id symbolicator = nil; |
| 729 id jrsSymbolicator = objc_lookUpClass("JRSSymbolicator"); | |
| 730 if (jrsSymbolicator != nil) { | |
| 731 id (*dynamicCall)(id, SEL, pid_t) = (id (*)(id, SEL, pid_t))&objc_msgSend; | |
| 732 symbolicator = dynamicCall(jrsSymbolicator, @selector(symbolicatorForPid:), (pid_t)jpid); | |
| 733 } | |
| 734 if (symbolicator != nil) { | |
| 735 CFRetain(symbolicator); // pin symbolicator while in java heap | |
| 736 } | |
| 737 | |
| 738 putSymbolicator(env, this_obj, symbolicator); | |
| 739 if (symbolicator == nil) { | |
| 740 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach symbolicator to the process"); | |
| 741 } | |
| 742 | |
| 743 JNF_COCOA_EXIT(env); | |
| 744 } | |
| 745 | |
| 8750 | 746 /** For core file, |
| 747 called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 */ | |
| 748 static void fillLoadObjects(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) { | |
| 749 int n = 0, i = 0; | |
| 750 | |
| 751 // add load objects | |
| 752 n = get_num_libs(ph); | |
| 753 for (i = 0; i < n; i++) { | |
| 754 uintptr_t base; | |
| 755 const char* name; | |
| 756 jobject loadObject; | |
| 757 jobject loadObjectList; | |
|
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758 jstring nameString; |
| 8750 | 759 |
| 760 base = get_lib_base(ph, i); | |
| 761 name = get_lib_name(ph, i); | |
|
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762 nameString = (*env)->NewStringUTF(env, name); |
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763 CHECK_EXCEPTION; |
| 8750 | 764 loadObject = (*env)->CallObjectMethod(env, this_obj, createLoadObject_ID, |
|
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765 nameString, (jlong)0, (jlong)base); |
| 8750 | 766 CHECK_EXCEPTION; |
| 767 loadObjectList = (*env)->GetObjectField(env, this_obj, loadObjectList_ID); | |
| 768 CHECK_EXCEPTION; | |
| 769 (*env)->CallBooleanMethod(env, loadObjectList, listAdd_ID, loadObject); | |
| 770 CHECK_EXCEPTION; | |
| 771 } | |
| 772 } | |
| 773 | |
| 774 /* | |
| 775 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 776 * Method: attach0 | |
| 777 * Signature: (Ljava/lang/String;Ljava/lang/String;)V | |
| 778 */ | |
| 779 JNIEXPORT void JNICALL | |
| 780 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2( | |
| 781 JNIEnv *env, jobject this_obj, jstring execName, jstring coreName) | |
| 782 { | |
| 783 const char *execName_cstr; | |
| 784 const char *coreName_cstr; | |
| 785 jboolean isCopy; | |
| 786 struct ps_prochandle* ph; | |
| 787 | |
| 788 execName_cstr = (*env)->GetStringUTFChars(env, execName, &isCopy); | |
| 789 CHECK_EXCEPTION; | |
| 790 coreName_cstr = (*env)->GetStringUTFChars(env, coreName, &isCopy); | |
| 791 CHECK_EXCEPTION; | |
| 792 | |
| 793 print_debug("attach: %s %s\n", execName_cstr, coreName_cstr); | |
| 794 | |
| 795 if ( (ph = Pgrab_core(execName_cstr, coreName_cstr)) == NULL) { | |
| 796 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr); | |
| 797 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr); | |
| 798 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the core file"); | |
| 799 } | |
| 800 (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph); | |
| 801 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr); | |
| 802 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr); | |
| 803 fillLoadObjects(env, this_obj, ph); | |
| 804 } | |
| 805 | |
| 4006 | 806 /* |
| 807 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal | |
| 808 * Method: detach0 | |
| 809 * Signature: ()V | |
| 810 */ | |
| 8750 | 811 JNIEXPORT void JNICALL |
|
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812 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_detach0( |
| 8750 | 813 JNIEnv *env, jobject this_obj) |
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814 { |
| 8750 | 815 print_debug("detach0 called\n"); |
| 816 struct ps_prochandle* ph = get_proc_handle(env, this_obj); | |
| 817 if (ph != NULL && ph->core != NULL) { | |
| 818 Prelease(ph); | |
| 819 return; | |
| 820 } | |
| 4006 | 821 JNF_COCOA_ENTER(env); |
| 822 task_t gTask = getTask(env, this_obj); | |
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823 |
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824 // detach from the ptraced process causing it to resume execution |
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825 int pid; |
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826 kern_return_t k_res; |
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827 k_res = pid_for_task(gTask, &pid); |
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828 if (k_res != KERN_SUCCESS) { |
| 8750 | 829 print_error("detach: pid_for_task(%d) failed (%d)\n", pid, k_res); |
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830 } |
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831 else { |
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832 int res = ptrace(PT_DETACH, pid, 0, 0); |
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833 if (res < 0) { |
| 8750 | 834 print_error("detach: ptrace(PT_DETACH, %d) failed (%d)\n", pid, res); |
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835 } |
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836 } |
| 8750 | 837 |
| 4006 | 838 mach_port_deallocate(mach_task_self(), gTask); |
| 839 id symbolicator = getSymbolicator(env, this_obj); | |
| 840 if (symbolicator != nil) { | |
| 841 CFRelease(symbolicator); | |
| 842 } | |
| 843 JNF_COCOA_EXIT(env); | |
| 844 } |