Mercurial > hg > truffle
comparison agent/src/os/solaris/proc/saproc.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 8db2b3e46c38 |
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1 /* | |
2 * Copyright 2002-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "salibproc.h" | |
26 #include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h" | |
27 #include <thread_db.h> | |
28 #include <strings.h> | |
29 #include <limits.h> | |
30 #include <demangle.h> | |
31 #include <stdarg.h> | |
32 #include <stdlib.h> | |
33 #include <errno.h> | |
34 | |
35 #define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; } | |
36 #define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;} | |
37 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; } | |
38 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;} | |
39 | |
40 #define SYMBOL_BUF_SIZE 256 | |
41 #define ERR_MSG_SIZE (PATH_MAX + 256) | |
42 | |
43 // debug mode | |
44 static int _libsaproc_debug = 0; | |
45 | |
46 static void print_debug(const char* format,...) { | |
47 if (_libsaproc_debug) { | |
48 va_list alist; | |
49 | |
50 va_start(alist, format); | |
51 fputs("libsaproc DEBUG: ", stderr); | |
52 vfprintf(stderr, format, alist); | |
53 va_end(alist); | |
54 } | |
55 } | |
56 | |
57 struct Debugger { | |
58 JNIEnv* env; | |
59 jobject this_obj; | |
60 }; | |
61 | |
62 struct DebuggerWithObject : Debugger { | |
63 jobject obj; | |
64 }; | |
65 | |
66 struct DebuggerWith2Objects : DebuggerWithObject { | |
67 jobject obj2; | |
68 }; | |
69 | |
70 /* | |
71 * Portions of user thread level detail gathering code is from pstack source | |
72 * code. See pstack.c in Solaris 2.8 user commands source code. | |
73 */ | |
74 | |
75 static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) { | |
76 env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg); | |
77 } | |
78 | |
79 // JNI ids for some fields, methods | |
80 | |
81 // libproc handler pointer | |
82 static jfieldID p_ps_prochandle_ID = 0; | |
83 | |
84 // libthread.so dlopen handle, thread agent ptr and function pointers | |
85 static jfieldID libthread_db_handle_ID = 0; | |
86 static jfieldID p_td_thragent_t_ID = 0; | |
87 static jfieldID p_td_init_ID = 0; | |
88 static jfieldID p_td_ta_new_ID = 0; | |
89 static jfieldID p_td_ta_delete_ID = 0; | |
90 static jfieldID p_td_ta_thr_iter_ID = 0; | |
91 static jfieldID p_td_thr_get_info_ID = 0; | |
92 static jfieldID p_td_ta_map_id2thr_ID = 0; | |
93 static jfieldID p_td_thr_getgregs_ID = 0; | |
94 | |
95 // reg index fields | |
96 static jfieldID pcRegIndex_ID = 0; | |
97 static jfieldID fpRegIndex_ID = 0; | |
98 | |
99 // part of the class sharing workaround | |
100 static jfieldID classes_jsa_fd_ID = 0; | |
101 static jfieldID p_file_map_header_ID = 0; | |
102 | |
103 // method ids | |
104 | |
105 static jmethodID getThreadForThreadId_ID = 0; | |
106 static jmethodID createSenderFrame_ID = 0; | |
107 static jmethodID createLoadObject_ID = 0; | |
108 static jmethodID createClosestSymbol_ID = 0; | |
109 static jmethodID listAdd_ID = 0; | |
110 | |
111 /* | |
112 * Functions we need from libthread_db | |
113 */ | |
114 typedef td_err_e | |
115 (*p_td_init_t)(void); | |
116 typedef td_err_e | |
117 (*p_td_ta_new_t)(void *, td_thragent_t **); | |
118 typedef td_err_e | |
119 (*p_td_ta_delete_t)(td_thragent_t *); | |
120 typedef td_err_e | |
121 (*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *, | |
122 td_thr_state_e, int, sigset_t *, unsigned); | |
123 typedef td_err_e | |
124 (*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *); | |
125 typedef td_err_e | |
126 (*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *); | |
127 typedef td_err_e | |
128 (*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t); | |
129 | |
130 static void | |
131 clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) { | |
132 // release libthread_db agent, if we had created | |
133 p_td_ta_delete_t p_td_ta_delete = 0; | |
134 p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID); | |
135 | |
136 td_thragent_t *p_td_thragent_t = 0; | |
137 p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
138 if (p_td_thragent_t != 0 && p_td_ta_delete != 0) { | |
139 p_td_ta_delete(p_td_thragent_t); | |
140 } | |
141 | |
142 // dlclose libthread_db.so | |
143 void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID); | |
144 if (libthread_db_handle != 0) { | |
145 dlclose(libthread_db_handle); | |
146 } | |
147 | |
148 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0); | |
149 env->SetLongField(this_obj, p_td_init_ID, (jlong)0); | |
150 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0); | |
151 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0); | |
152 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0); | |
153 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0); | |
154 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0); | |
155 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0); | |
156 } | |
157 | |
158 | |
159 static void detach_internal(JNIEnv* env, jobject this_obj) { | |
160 // clear libthread_db stuff | |
161 clear_libthread_db_ptrs(env, this_obj); | |
162 | |
163 // release ptr to ps_prochandle | |
164 jlong p_ps_prochandle; | |
165 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
166 if (p_ps_prochandle != 0L) { | |
167 Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR); | |
168 } | |
169 | |
170 // part of the class sharing workaround | |
171 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
172 if (classes_jsa_fd != -1) { | |
173 close(classes_jsa_fd); | |
174 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
175 if (pheader != NULL) { | |
176 free(pheader); | |
177 } | |
178 } | |
179 } | |
180 | |
181 // Is it okay to ignore libthread_db failure? Set env var to ignore | |
182 // libthread_db failure. You can still debug, but will miss threads | |
183 // related functionality. | |
184 static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0); | |
185 | |
186 #define HANDLE_THREADDB_FAILURE(msg) \ | |
187 if (sa_ignore_threaddb) { \ | |
188 printf("libsaproc WARNING: %s\n", msg); \ | |
189 return; \ | |
190 } else { \ | |
191 THROW_NEW_DEBUGGER_EXCEPTION(msg); \ | |
192 } | |
193 | |
194 #define HANDLE_THREADDB_FAILURE_(msg, ret) \ | |
195 if (sa_ignore_threaddb) { \ | |
196 printf("libsaproc WARNING: %s\n", msg); \ | |
197 return ret; \ | |
198 } else { \ | |
199 THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \ | |
200 } | |
201 | |
202 static const char * alt_root = NULL; | |
203 static int alt_root_len = -1; | |
204 | |
205 #define SA_ALTROOT "SA_ALTROOT" | |
206 | |
207 static void init_alt_root() { | |
208 if (alt_root_len == -1) { | |
209 alt_root = getenv(SA_ALTROOT); | |
210 if (alt_root) | |
211 alt_root_len = strlen(alt_root); | |
212 else | |
213 alt_root_len = 0; | |
214 } | |
215 } | |
216 | |
217 static int find_file_hook(const char * name, int elf_checksum) { | |
218 init_alt_root(); | |
219 | |
220 if (_libsaproc_debug) { | |
221 printf("libsaproc DEBUG: find_file_hook %s 0x%x\n", name, elf_checksum); | |
222 } | |
223 | |
224 if (alt_root_len > 0) { | |
225 int fd = -1; | |
226 char alt_path[PATH_MAX+1]; | |
227 | |
228 strcpy(alt_path, alt_root); | |
229 strcat(alt_path, name); | |
230 fd = open(alt_path, O_RDONLY); | |
231 if (fd >= 0) { | |
232 if (_libsaproc_debug) { | |
233 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path); | |
234 } | |
235 return fd; | |
236 } | |
237 | |
238 if (strrchr(name, '/')) { | |
239 strcpy(alt_path, alt_root); | |
240 strcat(alt_path, strrchr(name, '/')); | |
241 fd = open(alt_path, O_RDONLY); | |
242 if (fd >= 0) { | |
243 if (_libsaproc_debug) { | |
244 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path); | |
245 } | |
246 return fd; | |
247 } | |
248 } | |
249 } | |
250 return -1; | |
251 } | |
252 | |
253 static int pathmap_open(const char* name) { | |
254 int fd = open(name, O_RDONLY); | |
255 if (fd < 0) { | |
256 fd = find_file_hook(name, 0); | |
257 } | |
258 return fd; | |
259 } | |
260 | |
261 static void * pathmap_dlopen(const char * name, int mode) { | |
262 init_alt_root(); | |
263 | |
264 if (_libsaproc_debug) { | |
265 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name); | |
266 } | |
267 | |
268 void * handle = NULL; | |
269 if (alt_root_len > 0) { | |
270 char alt_path[PATH_MAX+1]; | |
271 strcpy(alt_path, alt_root); | |
272 strcat(alt_path, name); | |
273 handle = dlopen(alt_path, mode); | |
274 if (_libsaproc_debug && handle) { | |
275 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
276 } | |
277 | |
278 if (handle == NULL && strrchr(name, '/')) { | |
279 strcpy(alt_path, alt_root); | |
280 strcat(alt_path, strrchr(name, '/')); | |
281 handle = dlopen(alt_path, mode); | |
282 if (_libsaproc_debug && handle) { | |
283 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
284 } | |
285 } | |
286 } | |
287 if (handle == NULL) { | |
288 handle = dlopen(name, mode); | |
289 } | |
290 if (_libsaproc_debug) { | |
291 printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle); | |
292 } | |
293 return handle; | |
294 } | |
295 | |
296 // libproc and libthread_db callback functions | |
297 | |
298 extern "C" { | |
299 | |
300 static int | |
301 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) { | |
302 Debugger* dbg = (Debugger*) cd; | |
303 JNIEnv* env = dbg->env; | |
304 jobject this_obj = dbg->this_obj; | |
305 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
306 | |
307 char *s1 = 0, *s2 = 0; | |
308 char libthread_db[PATH_MAX]; | |
309 | |
310 if (strstr(object_name, "/libthread.so.") == NULL) | |
311 return (0); | |
312 | |
313 /* | |
314 * We found a libthread. | |
315 * dlopen() the matching libthread_db and get the thread agent handle. | |
316 */ | |
317 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) { | |
318 (void) strcpy(libthread_db, object_name); | |
319 s1 = (char*) strstr(object_name, ".so."); | |
320 s2 = (char*) strstr(libthread_db, ".so."); | |
321 (void) strcpy(s2, "_db"); | |
322 s2 += 3; | |
323 (void) strcpy(s2, s1); | |
324 } else { | |
325 #ifdef _LP64 | |
326 /* | |
327 * The victim process is 32-bit, we are 64-bit. | |
328 * We have to find the 64-bit version of libthread_db | |
329 * that matches the victim's 32-bit version of libthread. | |
330 */ | |
331 (void) strcpy(libthread_db, object_name); | |
332 s1 = (char*) strstr(object_name, "/libthread.so."); | |
333 s2 = (char*) strstr(libthread_db, "/libthread.so."); | |
334 (void) strcpy(s2, "/64"); | |
335 s2 += 3; | |
336 (void) strcpy(s2, s1); | |
337 s1 = (char*) strstr(s1, ".so."); | |
338 s2 = (char*) strstr(s2, ".so."); | |
339 (void) strcpy(s2, "_db"); | |
340 s2 += 3; | |
341 (void) strcpy(s2, s1); | |
342 #else | |
343 return (0); | |
344 #endif /* _LP64 */ | |
345 } | |
346 | |
347 void* libthread_db_handle = 0; | |
348 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) { | |
349 char errMsg[PATH_MAX + 256]; | |
350 sprintf(errMsg, "Can't load %s!", libthread_db); | |
351 HANDLE_THREADDB_FAILURE_(errMsg, 0); | |
352 } | |
353 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle); | |
354 | |
355 void* tmpPtr = 0; | |
356 tmpPtr = dlsym(libthread_db_handle, "td_init"); | |
357 if (tmpPtr == 0) { | |
358 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0); | |
359 } | |
360 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr); | |
361 | |
362 tmpPtr =dlsym(libthread_db_handle, "td_ta_new"); | |
363 if (tmpPtr == 0) { | |
364 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0); | |
365 } | |
366 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr); | |
367 | |
368 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete"); | |
369 if (tmpPtr == 0) { | |
370 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0); | |
371 } | |
372 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr); | |
373 | |
374 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter"); | |
375 if (tmpPtr == 0) { | |
376 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0); | |
377 } | |
378 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr); | |
379 | |
380 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info"); | |
381 if (tmpPtr == 0) { | |
382 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0); | |
383 } | |
384 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr); | |
385 | |
386 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr"); | |
387 if (tmpPtr == 0) { | |
388 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0); | |
389 } | |
390 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr); | |
391 | |
392 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs"); | |
393 if (tmpPtr == 0) { | |
394 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0); | |
395 } | |
396 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr); | |
397 | |
398 return 1; | |
399 } | |
400 | |
401 static int | |
402 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) { | |
403 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
404 JNIEnv* env = dbgo->env; | |
405 jobject this_obj = dbgo->this_obj; | |
406 jobject list = dbgo->obj; | |
407 | |
408 td_thrinfo_t thrinfo; | |
409 p_td_thr_get_info_t p_td_thr_get_info = (p_td_thr_get_info_t) env->GetLongField(this_obj, p_td_thr_get_info_ID); | |
410 | |
411 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK) | |
412 return (0); | |
413 | |
414 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid); | |
415 CHECK_EXCEPTION_(1); | |
416 env->CallBooleanMethod(list, listAdd_ID, threadProxy); | |
417 CHECK_EXCEPTION_(1); | |
418 return 0; | |
419 } | |
420 | |
421 static int | |
422 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) { | |
423 | |
424 if (obj_name) { | |
425 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
426 JNIEnv* env = dbgo->env; | |
427 jobject this_obj = dbgo->this_obj; | |
428 jobject list = dbgo->obj; | |
429 | |
430 jstring objectName = env->NewStringUTF(obj_name); | |
431 CHECK_EXCEPTION_(1); | |
432 | |
433 jlong mapSize = (jlong) pmp->pr_size; | |
434 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID, | |
435 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr); | |
436 CHECK_EXCEPTION_(1); | |
437 env->CallBooleanMethod(list, listAdd_ID, sharedObject); | |
438 CHECK_EXCEPTION_(1); | |
439 } | |
440 | |
441 return 0; | |
442 } | |
443 | |
444 static int | |
445 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) { | |
446 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd; | |
447 JNIEnv* env = dbgo2->env; | |
448 jobject this_obj = dbgo2->this_obj; | |
449 jobject curFrame = dbgo2->obj2; | |
450 | |
451 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID); | |
452 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID); | |
453 | |
454 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex]; | |
455 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex]; | |
456 | |
457 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID, | |
458 curFrame, pc, fp); | |
459 CHECK_EXCEPTION_(1); | |
460 if (dbgo2->obj == 0) { | |
461 dbgo2->obj = dbgo2->obj2; | |
462 } | |
463 return 0; | |
464 } | |
465 | |
466 // part of the class sharing workaround | |
467 | |
468 // FIXME: !!HACK ALERT!! | |
469 | |
470 // The format of sharing achive file header is needed to read shared heap | |
471 // file mappings. For now, I am hard coding portion of FileMapHeader here. | |
472 // Refer to filemap.hpp. | |
473 | |
474 // FileMapHeader describes the shared space data in the file to be | |
475 // mapped. This structure gets written to a file. It is not a class, so | |
476 // that the compilers don't add any compiler-private data to it. | |
477 | |
478 // Refer to CompactingPermGenGen::n_regions in compactingPermGenGen.hpp | |
479 const int NUM_SHARED_MAPS = 4; | |
480 | |
481 // Refer to FileMapInfo::_current_version in filemap.hpp | |
482 const int CURRENT_ARCHIVE_VERSION = 1; | |
483 | |
484 struct FileMapHeader { | |
485 int _magic; // identify file type. | |
486 int _version; // (from enum, above.) | |
487 size_t _alignment; // how shared archive should be aligned | |
488 | |
489 | |
490 struct space_info { | |
491 int _file_offset; // sizeof(this) rounded to vm page size | |
492 char* _base; // copy-on-write base address | |
493 size_t _capacity; // for validity checking | |
494 size_t _used; // for setting space top on read | |
495 | |
496 bool _read_only; // read only space? | |
497 bool _allow_exec; // executable code in space? | |
498 | |
499 } _space[NUM_SHARED_MAPS]; // was _space[CompactingPermGenGen::n_regions]; | |
500 | |
501 // Ignore the rest of the FileMapHeader. We don't need those fields here. | |
502 }; | |
503 | |
504 static bool | |
505 read_int(struct ps_prochandle* ph, psaddr_t addr, int* pvalue) { | |
506 int i; | |
507 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) { | |
508 *pvalue = i; | |
509 return true; | |
510 } else { | |
511 return false; | |
512 } | |
513 } | |
514 | |
515 static bool | |
516 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) { | |
517 uintptr_t uip; | |
518 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) { | |
519 *pvalue = uip; | |
520 return true; | |
521 } else { | |
522 return false; | |
523 } | |
524 } | |
525 | |
526 static bool | |
527 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) { | |
528 char ch = ' '; | |
529 size_t i = 0; | |
530 | |
531 while (ch != '\0') { | |
532 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK) | |
533 return false; | |
534 | |
535 if (i < size - 1) { | |
536 buf[i] = ch; | |
537 } else { // smaller buffer | |
538 return false; | |
539 } | |
540 | |
541 i++; addr++; | |
542 } | |
543 | |
544 buf[i] = '\0'; | |
545 return true; | |
546 } | |
547 | |
548 #define USE_SHARED_SPACES_SYM "UseSharedSpaces" | |
549 // mangled symbol name for Arguments::SharedArchivePath | |
550 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_" | |
551 | |
552 static int | |
553 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) { | |
554 Debugger* dbg = (Debugger*) cd; | |
555 JNIEnv* env = dbg->env; | |
556 jobject this_obj = dbg->this_obj; | |
557 const char* jvm_name = 0; | |
558 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL || | |
559 (jvm_name = strstr(obj_name, "libjvm_g.so")) != NULL) { | |
560 jvm_name = obj_name; | |
561 } else { | |
562 return 0; | |
563 } | |
564 | |
565 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
566 | |
567 // initialize classes[_g].jsa file descriptor field. | |
568 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1); | |
569 | |
570 // check whether class sharing is on by reading variable "UseSharedSpaces" | |
571 psaddr_t useSharedSpacesAddr = 0; | |
572 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr); | |
573 if (useSharedSpacesAddr == 0) { | |
574 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1); | |
575 } | |
576 | |
577 // read the value of the flag "UseSharedSpaces" | |
578 int value = 0; | |
579 if (read_int(ph, useSharedSpacesAddr, &value) != true) { | |
580 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1); | |
581 } else if (value == 0) { | |
582 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n"); | |
583 return 1; | |
584 } | |
585 | |
586 char classes_jsa[PATH_MAX]; | |
587 psaddr_t sharedArchivePathAddrAddr = 0; | |
588 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr); | |
589 if (sharedArchivePathAddrAddr == 0) { | |
590 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n"); | |
591 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
592 } | |
593 | |
594 uintptr_t sharedArchivePathAddr = 0; | |
595 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) { | |
596 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n"); | |
597 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
598 } | |
599 | |
600 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) { | |
601 print_debug("can't find read 'Arguments::SharedArchivePath' value\n"); | |
602 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
603 } | |
604 | |
605 print_debug("looking for %s\n", classes_jsa); | |
606 | |
607 // open the classes[_g].jsa | |
608 int fd = pathmap_open(classes_jsa); | |
609 if (fd < 0) { | |
610 char errMsg[ERR_MSG_SIZE]; | |
611 sprintf(errMsg, "can't open shared archive file %s", classes_jsa); | |
612 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
613 } else { | |
614 print_debug("opened shared archive file %s\n", classes_jsa); | |
615 } | |
616 | |
617 // parse classes[_g].jsa | |
618 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader)); | |
619 if (pheader == NULL) { | |
620 close(fd); | |
621 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1); | |
622 } | |
623 | |
624 memset(pheader, 0, sizeof(struct FileMapHeader)); | |
625 // read FileMapHeader | |
626 size_t n = read(fd, pheader, sizeof(struct FileMapHeader)); | |
627 if (n != sizeof(struct FileMapHeader)) { | |
628 free(pheader); | |
629 close(fd); | |
630 char errMsg[ERR_MSG_SIZE]; | |
631 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa); | |
632 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
633 } | |
634 | |
635 // check file magic | |
636 if (pheader->_magic != 0xf00baba2) { | |
637 free(pheader); | |
638 close(fd); | |
639 char errMsg[ERR_MSG_SIZE]; | |
640 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2", | |
641 classes_jsa, pheader->_magic); | |
642 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
643 } | |
644 | |
645 // check version | |
646 if (pheader->_version != CURRENT_ARCHIVE_VERSION) { | |
647 free(pheader); | |
648 close(fd); | |
649 char errMsg[ERR_MSG_SIZE]; | |
650 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d", | |
651 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION); | |
652 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
653 } | |
654 | |
655 if (_libsaproc_debug) { | |
656 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
657 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n", | |
658 pheader->_space[m]._file_offset, pheader->_space[m]._base, | |
659 pheader->_space[m]._used, pheader->_space[m]._read_only); | |
660 } | |
661 } | |
662 | |
663 // FIXME: For now, omitting other checks such as VM version etc. | |
664 | |
665 // store class archive file fd and map header in debugger object fields | |
666 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd); | |
667 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader); | |
668 return 1; | |
669 } | |
670 | |
671 } // extern "C" | |
672 | |
673 // error messages for proc_arg_grab failure codes. The messages are | |
674 // modified versions of comments against corresponding #defines in | |
675 // libproc.h. | |
676 static const char* proc_arg_grab_errmsgs[] = { | |
677 "", | |
678 /* G_NOPROC */ "No such process", | |
679 /* G_NOCORE */ "No such core file", | |
680 /* G_NOPROCORCORE */ "No such process or core", | |
681 /* G_NOEXEC */ "Cannot locate executable file", | |
682 /* G_ZOMB */ "Zombie processs", | |
683 /* G_PERM */ "No permission to attach", | |
684 /* G_BUSY */ "Another process has already attached", | |
685 /* G_SYS */ "System process - can not attach", | |
686 /* G_SELF */ "Process is self - can't debug myself!", | |
687 /* G_INTR */ "Interrupt received while grabbing", | |
688 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger", | |
689 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?", | |
690 /* G_ELF */ "Libelf error while parsing an ELF file", | |
691 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?", | |
692 }; | |
693 | |
694 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) { | |
695 jboolean isCopy; | |
696 int gcode; | |
697 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy); | |
698 CHECK_EXCEPTION; | |
699 | |
700 // some older versions of libproc.so crash when trying to attach 32 bit | |
701 // debugger to 64 bit core file. check and throw error. | |
702 #ifndef _LP64 | |
703 atoi(cmdLine_cstr); | |
704 if (errno) { | |
705 // core file | |
706 int core_fd; | |
707 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) { | |
708 Elf32_Ehdr e32; | |
709 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) && | |
710 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 && | |
711 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) { | |
712 close(core_fd); | |
713 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger"); | |
714 } | |
715 close(core_fd); | |
716 } | |
717 // all other conditions are handled by libproc.so. | |
718 } | |
719 #endif | |
720 | |
721 // connect to process/core | |
722 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode); | |
723 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr); | |
724 if (! ph) { | |
725 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) { | |
726 char errMsg[ERR_MSG_SIZE]; | |
727 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]); | |
728 THROW_NEW_DEBUGGER_EXCEPTION(errMsg); | |
729 } else { | |
730 if (_libsaproc_debug && gcode == G_STRANGE) { | |
731 perror("libsaproc DEBUG: "); | |
732 } | |
733 if (isProcess) { | |
734 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!"); | |
735 } else { | |
736 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!"); | |
737 } | |
738 } | |
739 } | |
740 | |
741 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't | |
742 // support such cross-bit-debugging. check for that combination and throw error. | |
743 #ifdef _LP64 | |
744 int data_model; | |
745 if (ps_pdmodel(ph, &data_model) != PS_OK) { | |
746 Prelease(ph, PRELEASE_CLEAR); | |
747 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)"); | |
748 } | |
749 if (data_model == PR_MODEL_ILP32) { | |
750 Prelease(ph, PRELEASE_CLEAR); | |
751 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger"); | |
752 } | |
753 #endif | |
754 | |
755 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph); | |
756 | |
757 Debugger dbg; | |
758 dbg.env = env; | |
759 dbg.this_obj = this_obj; | |
760 jthrowable exception = 0; | |
761 if (! isProcess) { | |
762 /* | |
763 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ. | |
764 * These pages are mapped from the file "classes[_g].jsa". MAP_SHARED pages are not dumped | |
765 * in Solaris core.To read shared heap pages, we have to read classes[_g].jsa file. | |
766 */ | |
767 Pobject_iter(ph, init_classsharing_workaround, &dbg); | |
768 exception = env->ExceptionOccurred(); | |
769 if (exception) { | |
770 env->ExceptionClear(); | |
771 detach_internal(env, this_obj); | |
772 env->Throw(exception); | |
773 return; | |
774 } | |
775 } | |
776 | |
777 /* | |
778 * Iterate over the process mappings looking | |
779 * for libthread and then dlopen the appropriate | |
780 * libthread_db and get function pointers. | |
781 */ | |
782 Pobject_iter(ph, init_libthread_db_ptrs, &dbg); | |
783 exception = env->ExceptionOccurred(); | |
784 if (exception) { | |
785 env->ExceptionClear(); | |
786 if (!sa_ignore_threaddb) { | |
787 detach_internal(env, this_obj); | |
788 env->Throw(exception); | |
789 } | |
790 return; | |
791 } | |
792 | |
793 // init libthread_db and create thread_db agent | |
794 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID); | |
795 if (p_td_init == 0) { | |
796 if (!sa_ignore_threaddb) { | |
797 detach_internal(env, this_obj); | |
798 } | |
799 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!"); | |
800 } | |
801 | |
802 if (p_td_init() != TD_OK) { | |
803 if (!sa_ignore_threaddb) { | |
804 detach_internal(env, this_obj); | |
805 } | |
806 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!"); | |
807 } | |
808 | |
809 p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID); | |
810 | |
811 td_thragent_t *p_td_thragent_t = 0; | |
812 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) { | |
813 if (!sa_ignore_threaddb) { | |
814 detach_internal(env, this_obj); | |
815 } | |
816 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!"); | |
817 } | |
818 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t); | |
819 | |
820 } | |
821 | |
822 /* | |
823 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
824 * Method: attach0 | |
825 * Signature: (Ljava/lang/String;)V | |
826 * Description: process detach | |
827 */ | |
828 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2 | |
829 (JNIEnv *env, jobject this_obj, jstring pid) { | |
830 attach_internal(env, this_obj, pid, JNI_TRUE); | |
831 } | |
832 | |
833 /* | |
834 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
835 * Method: attach0 | |
836 * Signature: (Ljava/lang/String;Ljava/lang/String;)V | |
837 * Description: core file detach | |
838 */ | |
839 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 | |
840 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) { | |
841 // ignore executable file name, libproc.so can detect a.out name anyway. | |
842 attach_internal(env, this_obj, corefile, JNI_FALSE); | |
843 } | |
844 | |
845 | |
846 /* | |
847 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
848 * Method: detach0 | |
849 * Signature: ()V | |
850 * Description: process/core file detach | |
851 */ | |
852 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0 | |
853 (JNIEnv *env, jobject this_obj) { | |
854 detach_internal(env, this_obj); | |
855 } | |
856 | |
857 /* | |
858 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
859 * Method: getRemoteProcessAddressSize0 | |
860 * Signature: ()I | |
861 * Description: get process/core address size | |
862 */ | |
863 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0 | |
864 (JNIEnv *env, jobject this_obj) { | |
865 jlong p_ps_prochandle; | |
866 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
867 int data_model = PR_MODEL_ILP32; | |
868 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model); | |
869 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64); | |
870 return (jint) data_model == PR_MODEL_ILP32? 32 : 64; | |
871 } | |
872 | |
873 /* | |
874 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
875 * Method: getPageSize0 | |
876 * Signature: ()I | |
877 * Description: get process/core page size | |
878 */ | |
879 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0 | |
880 (JNIEnv *env, jobject this_obj) { | |
881 | |
882 /* | |
883 We are not yet attached to a java process or core file. getPageSize is called from | |
884 the constructor of ProcDebuggerLocal. The following won't work! | |
885 | |
886 jlong p_ps_prochandle; | |
887 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
888 CHECK_EXCEPTION_(-1); | |
889 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle; | |
890 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ) | |
891 : getpagesize(); | |
892 | |
893 So even though core may have been generated with a different page size settings, for now | |
894 call getpagesize. | |
895 */ | |
896 | |
897 return getpagesize(); | |
898 } | |
899 | |
900 /* | |
901 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
902 * Method: getThreadIntegerRegisterSet0 | |
903 * Signature: (J)[J | |
904 * Description: get gregset for a given thread specified by thread id | |
905 */ | |
906 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0 | |
907 (JNIEnv *env, jobject this_obj, jlong tid) { | |
908 // map the thread id to thread handle | |
909 p_td_ta_map_id2thr_t p_td_ta_map_id2thr = (p_td_ta_map_id2thr_t) env->GetLongField(this_obj, p_td_ta_map_id2thr_ID); | |
910 | |
911 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
912 if (p_td_thragent_t == 0) { | |
913 return 0; | |
914 } | |
915 | |
916 td_thrhandle_t thr_handle; | |
917 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) { | |
918 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0); | |
919 } | |
920 | |
921 p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID); | |
922 prgregset_t gregs; | |
923 p_td_thr_getgregs(&thr_handle, gregs); | |
924 | |
925 jlongArray res = env->NewLongArray(NPRGREG); | |
926 CHECK_EXCEPTION_(0); | |
927 jboolean isCopy; | |
928 jlong* ptr = env->GetLongArrayElements(res, &isCopy); | |
929 for (int i = 0; i < NPRGREG; i++) { | |
930 ptr[i] = (jlong) (uintptr_t) gregs[i]; | |
931 } | |
932 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT); | |
933 return res; | |
934 } | |
935 | |
936 /* | |
937 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
938 * Method: fillThreadList0 | |
939 * Signature: (Ljava/util/List;)V | |
940 * Description: fills thread list of the debuggee process/core | |
941 */ | |
942 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0 | |
943 (JNIEnv *env, jobject this_obj, jobject list) { | |
944 | |
945 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
946 if (p_td_thragent_t == 0) { | |
947 return; | |
948 } | |
949 | |
950 p_td_ta_thr_iter_t p_td_ta_thr_iter = (p_td_ta_thr_iter_t) env->GetLongField(this_obj, p_td_ta_thr_iter_ID); | |
951 | |
952 DebuggerWithObject dbgo; | |
953 dbgo.env = env; | |
954 dbgo.this_obj = this_obj; | |
955 dbgo.obj = list; | |
956 | |
957 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo, | |
958 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
959 } | |
960 | |
961 /* | |
962 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
963 * Method: fillCFrameList0 | |
964 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame; | |
965 * Description: fills CFrame list for a given thread | |
966 */ | |
967 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0 | |
968 (JNIEnv *env, jobject this_obj, jlongArray regsArray) { | |
969 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
970 | |
971 DebuggerWith2Objects dbgo2; | |
972 dbgo2.env = env; | |
973 dbgo2.this_obj = this_obj; | |
974 dbgo2.obj = NULL; | |
975 dbgo2.obj2 = NULL; | |
976 | |
977 jboolean isCopy; | |
978 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy); | |
979 CHECK_EXCEPTION_(0); | |
980 | |
981 prgregset_t gregs; | |
982 for (int i = 0; i < NPRGREG; i++) { | |
983 gregs[i] = (uintptr_t) ptr[i]; | |
984 } | |
985 | |
986 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT); | |
987 CHECK_EXCEPTION_(0); | |
988 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, fill_cframe_list, &dbgo2); | |
989 return dbgo2.obj; | |
990 } | |
991 | |
992 /* | |
993 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
994 * Method: fillLoadObjectList0 | |
995 * Signature: (Ljava/util/List;)V | |
996 * Description: fills shared objects of the debuggee process/core | |
997 */ | |
998 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0 | |
999 (JNIEnv *env, jobject this_obj, jobject list) { | |
1000 DebuggerWithObject dbgo; | |
1001 dbgo.env = env; | |
1002 dbgo.this_obj = this_obj; | |
1003 dbgo.obj = list; | |
1004 | |
1005 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1006 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo); | |
1007 } | |
1008 | |
1009 /* | |
1010 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1011 * Method: readBytesFromProcess0 | |
1012 * Signature: (JJ)[B | |
1013 * Description: read bytes from debuggee process/core | |
1014 */ | |
1015 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0 | |
1016 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) { | |
1017 | |
1018 jbyteArray array = env->NewByteArray(numBytes); | |
1019 CHECK_EXCEPTION_(0); | |
1020 jboolean isCopy; | |
1021 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy); | |
1022 CHECK_EXCEPTION_(0); | |
1023 | |
1024 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1025 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle, | |
1026 (psaddr_t)address, bufPtr, (size_t)numBytes); | |
1027 | |
1028 if (ret != PS_OK) { | |
1029 // part of the class sharing workaround. try shared heap area | |
1030 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
1031 if (classes_jsa_fd != -1 && address != (jlong)0) { | |
1032 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address); | |
1033 | |
1034 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
1035 // walk through the shared mappings -- we just have 4 of them. | |
1036 // so, linear walking is okay. | |
1037 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
1038 | |
1039 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE | |
1040 // and hence will be read by libproc. Besides, the file copy may be | |
1041 // stale because the process might have modified those pages. | |
1042 if (pheader->_space[m]._read_only) { | |
1043 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base; | |
1044 size_t usedSize = pheader->_space[m]._used; | |
1045 if (address >= baseAddress && address < (baseAddress + usedSize)) { | |
1046 // the given address falls in this shared heap area | |
1047 print_debug("found shared map at 0x%lx\n", (long) baseAddress); | |
1048 | |
1049 | |
1050 // If more data is asked than actually mapped from file, we need to zero fill | |
1051 // till the end-of-page boundary. But, java array new does that for us. we just | |
1052 // need to read as much as data available. | |
1053 | |
1054 #define MIN2(x, y) (((x) < (y))? (x) : (y)) | |
1055 | |
1056 jlong diff = address - baseAddress; | |
1057 jlong bytesToRead = MIN2(numBytes, usedSize - diff); | |
1058 off_t offset = pheader->_space[m]._file_offset + off_t(diff); | |
1059 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset); | |
1060 if (bytesRead != bytesToRead) { | |
1061 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1062 print_debug("shared map read failed\n"); | |
1063 return jbyteArray(0); | |
1064 } else { | |
1065 print_debug("shared map read succeeded\n"); | |
1066 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1067 return array; | |
1068 } | |
1069 } // is in current map | |
1070 } // is read only map | |
1071 } // for shared maps | |
1072 } // classes_jsa_fd != -1 | |
1073 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1074 return jbyteArray(0); | |
1075 } else { | |
1076 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1077 return array; | |
1078 } | |
1079 } | |
1080 | |
1081 /* | |
1082 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1083 * Method: writeBytesToProcess0 | |
1084 * Signature: (JJ[B)V | |
1085 * Description: write bytes into debugger process | |
1086 */ | |
1087 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0 | |
1088 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) { | |
1089 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1090 jboolean isCopy; | |
1091 jbyte* ptr = env->GetByteArrayElements(data, &isCopy); | |
1092 CHECK_EXCEPTION; | |
1093 | |
1094 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) { | |
1095 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1096 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!"); | |
1097 } | |
1098 | |
1099 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1100 } | |
1101 | |
1102 /* | |
1103 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1104 * Method: suspend0 | |
1105 * Signature: ()V | |
1106 */ | |
1107 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0 | |
1108 (JNIEnv *env, jobject this_obj) { | |
1109 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1110 // for now don't check return value. revisit this again. | |
1111 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000); | |
1112 } | |
1113 | |
1114 /* | |
1115 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1116 * Method: resume0 | |
1117 * Signature: ()V | |
1118 */ | |
1119 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0 | |
1120 (JNIEnv *env, jobject this_obj) { | |
1121 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1122 // for now don't check return value. revisit this again. | |
1123 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP); | |
1124 } | |
1125 | |
1126 /* | |
1127 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1128 * Method: lookupByName0 | |
1129 * Signature: (Ljava/lang/String;Ljava/lang/String;)J | |
1130 * Description: symbol lookup by name | |
1131 */ | |
1132 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0 | |
1133 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) { | |
1134 jlong p_ps_prochandle; | |
1135 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1136 | |
1137 jboolean isCopy; | |
1138 const char* objectName_cstr = NULL; | |
1139 if (objectName != NULL) { | |
1140 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy); | |
1141 CHECK_EXCEPTION_(0); | |
1142 } else { | |
1143 objectName_cstr = PR_OBJ_EVERY; | |
1144 } | |
1145 | |
1146 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy); | |
1147 CHECK_EXCEPTION_(0); | |
1148 | |
1149 psaddr_t symbol_addr = (psaddr_t) 0; | |
1150 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr, | |
1151 symbolName_cstr, &symbol_addr); | |
1152 | |
1153 if (symbol_addr == 0) { | |
1154 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr); | |
1155 } | |
1156 | |
1157 if (objectName_cstr != PR_OBJ_EVERY) { | |
1158 env->ReleaseStringUTFChars(objectName, objectName_cstr); | |
1159 } | |
1160 env->ReleaseStringUTFChars(symbolName, symbolName_cstr); | |
1161 return (jlong) (uintptr_t) symbol_addr; | |
1162 } | |
1163 | |
1164 /* | |
1165 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1166 * Method: lookupByAddress0 | |
1167 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; | |
1168 * Description: lookup symbol name for a given address | |
1169 */ | |
1170 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0 | |
1171 (JNIEnv *env, jobject this_obj, jlong address) { | |
1172 jlong p_ps_prochandle; | |
1173 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1174 | |
1175 char nameBuf[SYMBOL_BUF_SIZE + 1]; | |
1176 GElf_Sym sym; | |
1177 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address, | |
1178 nameBuf, sizeof(nameBuf), &sym); | |
1179 if (res != 0) { // failed | |
1180 return 0; | |
1181 } | |
1182 | |
1183 jstring resSym = env->NewStringUTF(nameBuf); | |
1184 CHECK_EXCEPTION_(0); | |
1185 | |
1186 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value)); | |
1187 } | |
1188 | |
1189 /* | |
1190 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1191 * Method: demangle0 | |
1192 * Signature: (Ljava/lang/String;)Ljava/lang/String; | |
1193 */ | |
1194 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0 | |
1195 (JNIEnv *env, jobject this_object, jstring name) { | |
1196 jboolean isCopy; | |
1197 const char* ptr = env->GetStringUTFChars(name, &isCopy); | |
1198 char buf[2*SYMBOL_BUF_SIZE + 1]; | |
1199 jstring res = 0; | |
1200 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) { | |
1201 res = env->NewStringUTF(buf); | |
1202 } else { | |
1203 res = name; | |
1204 } | |
1205 env->ReleaseStringUTFChars(name, ptr); | |
1206 return res; | |
1207 } | |
1208 | |
1209 typedef int (*find_file_hook_t)(const char *, int elf_checksum); | |
1210 | |
1211 /* | |
1212 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1213 * Method: initIDs | |
1214 * Signature: ()V | |
1215 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class | |
1216 */ | |
1217 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs | |
1218 (JNIEnv *env, jclass clazz) { | |
1219 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL; | |
1220 if (_libsaproc_debug) { | |
1221 // propagate debug mode to libproc.so | |
1222 static const char* var = "LIBPROC_DEBUG=1"; | |
1223 putenv((char*)var); | |
1224 } | |
1225 | |
1226 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL); | |
1227 if (libproc_handle == 0) | |
1228 THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!"); | |
1229 | |
1230 // If possible, set shared object find file hook. | |
1231 void (*set_hook)(find_file_hook_t) = (void(*)(find_file_hook_t))dlsym(libproc_handle, "Pset_find_file_hook"); | |
1232 if (set_hook) { | |
1233 // we found find file hook symbol, set up our hook function. | |
1234 set_hook(find_file_hook); | |
1235 } else if (getenv(SA_ALTROOT)) { | |
1236 printf("libsaproc WARNING: %s set, but can't set file hook. " \ | |
1237 "Did you use right version of libproc.so?\n", SA_ALTROOT); | |
1238 } | |
1239 | |
1240 p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J"); | |
1241 CHECK_EXCEPTION; | |
1242 | |
1243 libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J"); | |
1244 CHECK_EXCEPTION; | |
1245 | |
1246 p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J"); | |
1247 CHECK_EXCEPTION; | |
1248 | |
1249 p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J"); | |
1250 CHECK_EXCEPTION; | |
1251 | |
1252 p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J"); | |
1253 CHECK_EXCEPTION; | |
1254 | |
1255 p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J"); | |
1256 CHECK_EXCEPTION; | |
1257 | |
1258 p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J"); | |
1259 CHECK_EXCEPTION; | |
1260 | |
1261 p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J"); | |
1262 CHECK_EXCEPTION; | |
1263 | |
1264 p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J"); | |
1265 CHECK_EXCEPTION; | |
1266 | |
1267 p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J"); | |
1268 CHECK_EXCEPTION; | |
1269 | |
1270 getThreadForThreadId_ID = env->GetMethodID(clazz, | |
1271 "getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;"); | |
1272 CHECK_EXCEPTION; | |
1273 | |
1274 pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I"); | |
1275 CHECK_EXCEPTION; | |
1276 | |
1277 fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I"); | |
1278 CHECK_EXCEPTION; | |
1279 | |
1280 createSenderFrame_ID = env->GetMethodID(clazz, | |
1281 "createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;"); | |
1282 CHECK_EXCEPTION; | |
1283 | |
1284 createLoadObject_ID = env->GetMethodID(clazz, | |
1285 "createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;"); | |
1286 CHECK_EXCEPTION; | |
1287 | |
1288 createClosestSymbol_ID = env->GetMethodID(clazz, | |
1289 "createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;"); | |
1290 CHECK_EXCEPTION; | |
1291 | |
1292 listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z"); | |
1293 CHECK_EXCEPTION; | |
1294 | |
1295 // part of the class sharing workaround | |
1296 classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I"); | |
1297 CHECK_EXCEPTION; | |
1298 p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J"); | |
1299 CHECK_EXCEPTION; | |
1300 } |