Mercurial > hg > graal-compiler
annotate agent/src/os/solaris/proc/saproc.cpp @ 1853:b98784e85f71
Merge
author | kvn |
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date | Thu, 14 Oct 2010 10:46:38 -0700 |
parents | c18cbe5936b8 |
children | 405c634f4aaa |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #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 | |
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217 // This function is a complete substitute for the open system call |
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218 // since it's also used to override open calls from libproc to |
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219 // implement as a pathmap style facility for the SA. If libproc |
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220 // starts using other interfaces then this might have to extended to |
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221 // cover other calls. |
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222 extern "C" int libsaproc_open(const char * name, int oflag, ...) { |
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223 if (oflag == O_RDONLY) { |
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224 init_alt_root(); |
0 | 225 |
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226 if (_libsaproc_debug) { |
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227 printf("libsaproc DEBUG: libsaproc_open %s\n", name); |
0 | 228 } |
229 | |
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230 if (alt_root_len > 0) { |
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231 int fd = -1; |
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232 char alt_path[PATH_MAX+1]; |
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233 |
0 | 234 strcpy(alt_path, alt_root); |
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235 strcat(alt_path, name); |
0 | 236 fd = open(alt_path, O_RDONLY); |
237 if (fd >= 0) { | |
238 if (_libsaproc_debug) { | |
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239 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path); |
0 | 240 } |
241 return fd; | |
242 } | |
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243 |
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244 if (strrchr(name, '/')) { |
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245 strcpy(alt_path, alt_root); |
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246 strcat(alt_path, strrchr(name, '/')); |
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247 fd = open(alt_path, O_RDONLY); |
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248 if (fd >= 0) { |
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249 if (_libsaproc_debug) { |
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250 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path); |
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251 } |
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252 return fd; |
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253 } |
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254 } |
0 | 255 } |
256 } | |
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257 |
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258 { |
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259 mode_t mode; |
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260 va_list ap; |
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261 va_start(ap, oflag); |
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262 mode = va_arg(ap, mode_t); |
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263 va_end(ap); |
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264 |
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265 return open(name, oflag, mode); |
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266 } |
0 | 267 } |
268 | |
269 | |
270 static void * pathmap_dlopen(const char * name, int mode) { | |
271 init_alt_root(); | |
272 | |
273 if (_libsaproc_debug) { | |
274 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name); | |
275 } | |
276 | |
277 void * handle = NULL; | |
278 if (alt_root_len > 0) { | |
279 char alt_path[PATH_MAX+1]; | |
280 strcpy(alt_path, alt_root); | |
281 strcat(alt_path, name); | |
282 handle = dlopen(alt_path, mode); | |
283 if (_libsaproc_debug && handle) { | |
284 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
285 } | |
286 | |
287 if (handle == NULL && strrchr(name, '/')) { | |
288 strcpy(alt_path, alt_root); | |
289 strcat(alt_path, strrchr(name, '/')); | |
290 handle = dlopen(alt_path, mode); | |
291 if (_libsaproc_debug && handle) { | |
292 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
293 } | |
294 } | |
295 } | |
296 if (handle == NULL) { | |
297 handle = dlopen(name, mode); | |
298 } | |
299 if (_libsaproc_debug) { | |
300 printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle); | |
301 } | |
302 return handle; | |
303 } | |
304 | |
305 // libproc and libthread_db callback functions | |
306 | |
307 extern "C" { | |
308 | |
309 static int | |
310 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) { | |
311 Debugger* dbg = (Debugger*) cd; | |
312 JNIEnv* env = dbg->env; | |
313 jobject this_obj = dbg->this_obj; | |
314 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
315 | |
316 char *s1 = 0, *s2 = 0; | |
317 char libthread_db[PATH_MAX]; | |
318 | |
319 if (strstr(object_name, "/libthread.so.") == NULL) | |
320 return (0); | |
321 | |
322 /* | |
323 * We found a libthread. | |
324 * dlopen() the matching libthread_db and get the thread agent handle. | |
325 */ | |
326 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) { | |
327 (void) strcpy(libthread_db, object_name); | |
328 s1 = (char*) strstr(object_name, ".so."); | |
329 s2 = (char*) strstr(libthread_db, ".so."); | |
330 (void) strcpy(s2, "_db"); | |
331 s2 += 3; | |
332 (void) strcpy(s2, s1); | |
333 } else { | |
334 #ifdef _LP64 | |
335 /* | |
336 * The victim process is 32-bit, we are 64-bit. | |
337 * We have to find the 64-bit version of libthread_db | |
338 * that matches the victim's 32-bit version of libthread. | |
339 */ | |
340 (void) strcpy(libthread_db, object_name); | |
341 s1 = (char*) strstr(object_name, "/libthread.so."); | |
342 s2 = (char*) strstr(libthread_db, "/libthread.so."); | |
343 (void) strcpy(s2, "/64"); | |
344 s2 += 3; | |
345 (void) strcpy(s2, s1); | |
346 s1 = (char*) strstr(s1, ".so."); | |
347 s2 = (char*) strstr(s2, ".so."); | |
348 (void) strcpy(s2, "_db"); | |
349 s2 += 3; | |
350 (void) strcpy(s2, s1); | |
351 #else | |
352 return (0); | |
353 #endif /* _LP64 */ | |
354 } | |
355 | |
356 void* libthread_db_handle = 0; | |
357 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) { | |
358 char errMsg[PATH_MAX + 256]; | |
359 sprintf(errMsg, "Can't load %s!", libthread_db); | |
360 HANDLE_THREADDB_FAILURE_(errMsg, 0); | |
361 } | |
362 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle); | |
363 | |
364 void* tmpPtr = 0; | |
365 tmpPtr = dlsym(libthread_db_handle, "td_init"); | |
366 if (tmpPtr == 0) { | |
367 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0); | |
368 } | |
369 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr); | |
370 | |
371 tmpPtr =dlsym(libthread_db_handle, "td_ta_new"); | |
372 if (tmpPtr == 0) { | |
373 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0); | |
374 } | |
375 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr); | |
376 | |
377 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete"); | |
378 if (tmpPtr == 0) { | |
379 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0); | |
380 } | |
381 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr); | |
382 | |
383 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter"); | |
384 if (tmpPtr == 0) { | |
385 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0); | |
386 } | |
387 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr); | |
388 | |
389 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info"); | |
390 if (tmpPtr == 0) { | |
391 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0); | |
392 } | |
393 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr); | |
394 | |
395 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr"); | |
396 if (tmpPtr == 0) { | |
397 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0); | |
398 } | |
399 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr); | |
400 | |
401 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs"); | |
402 if (tmpPtr == 0) { | |
403 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0); | |
404 } | |
405 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr); | |
406 | |
407 return 1; | |
408 } | |
409 | |
410 static int | |
411 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) { | |
412 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
413 JNIEnv* env = dbgo->env; | |
414 jobject this_obj = dbgo->this_obj; | |
415 jobject list = dbgo->obj; | |
416 | |
417 td_thrinfo_t thrinfo; | |
418 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); | |
419 | |
420 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK) | |
421 return (0); | |
422 | |
423 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid); | |
424 CHECK_EXCEPTION_(1); | |
425 env->CallBooleanMethod(list, listAdd_ID, threadProxy); | |
426 CHECK_EXCEPTION_(1); | |
427 return 0; | |
428 } | |
429 | |
430 static int | |
431 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) { | |
432 | |
433 if (obj_name) { | |
434 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
435 JNIEnv* env = dbgo->env; | |
436 jobject this_obj = dbgo->this_obj; | |
437 jobject list = dbgo->obj; | |
438 | |
439 jstring objectName = env->NewStringUTF(obj_name); | |
440 CHECK_EXCEPTION_(1); | |
441 | |
442 jlong mapSize = (jlong) pmp->pr_size; | |
443 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID, | |
444 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr); | |
445 CHECK_EXCEPTION_(1); | |
446 env->CallBooleanMethod(list, listAdd_ID, sharedObject); | |
447 CHECK_EXCEPTION_(1); | |
448 } | |
449 | |
450 return 0; | |
451 } | |
452 | |
453 static int | |
454 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) { | |
455 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd; | |
456 JNIEnv* env = dbgo2->env; | |
457 jobject this_obj = dbgo2->this_obj; | |
458 jobject curFrame = dbgo2->obj2; | |
459 | |
460 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID); | |
461 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID); | |
462 | |
463 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex]; | |
464 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex]; | |
465 | |
466 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID, | |
467 curFrame, pc, fp); | |
468 CHECK_EXCEPTION_(1); | |
469 if (dbgo2->obj == 0) { | |
470 dbgo2->obj = dbgo2->obj2; | |
471 } | |
472 return 0; | |
473 } | |
474 | |
475 // part of the class sharing workaround | |
476 | |
477 // FIXME: !!HACK ALERT!! | |
478 | |
479 // The format of sharing achive file header is needed to read shared heap | |
480 // file mappings. For now, I am hard coding portion of FileMapHeader here. | |
481 // Refer to filemap.hpp. | |
482 | |
483 // FileMapHeader describes the shared space data in the file to be | |
484 // mapped. This structure gets written to a file. It is not a class, so | |
485 // that the compilers don't add any compiler-private data to it. | |
486 | |
487 // Refer to CompactingPermGenGen::n_regions in compactingPermGenGen.hpp | |
488 const int NUM_SHARED_MAPS = 4; | |
489 | |
490 // Refer to FileMapInfo::_current_version in filemap.hpp | |
491 const int CURRENT_ARCHIVE_VERSION = 1; | |
492 | |
493 struct FileMapHeader { | |
494 int _magic; // identify file type. | |
495 int _version; // (from enum, above.) | |
496 size_t _alignment; // how shared archive should be aligned | |
497 | |
498 | |
499 struct space_info { | |
500 int _file_offset; // sizeof(this) rounded to vm page size | |
501 char* _base; // copy-on-write base address | |
502 size_t _capacity; // for validity checking | |
503 size_t _used; // for setting space top on read | |
504 | |
505 bool _read_only; // read only space? | |
506 bool _allow_exec; // executable code in space? | |
507 | |
508 } _space[NUM_SHARED_MAPS]; // was _space[CompactingPermGenGen::n_regions]; | |
509 | |
510 // Ignore the rest of the FileMapHeader. We don't need those fields here. | |
511 }; | |
512 | |
513 static bool | |
529
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514 read_jboolean(struct ps_prochandle* ph, psaddr_t addr, jboolean* pvalue) { |
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515 jboolean i; |
0 | 516 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) { |
517 *pvalue = i; | |
518 return true; | |
519 } else { | |
520 return false; | |
521 } | |
522 } | |
523 | |
524 static bool | |
525 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) { | |
526 uintptr_t uip; | |
527 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) { | |
528 *pvalue = uip; | |
529 return true; | |
530 } else { | |
531 return false; | |
532 } | |
533 } | |
534 | |
535 static bool | |
536 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) { | |
537 char ch = ' '; | |
538 size_t i = 0; | |
539 | |
540 while (ch != '\0') { | |
541 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK) | |
542 return false; | |
543 | |
544 if (i < size - 1) { | |
545 buf[i] = ch; | |
546 } else { // smaller buffer | |
547 return false; | |
548 } | |
549 | |
550 i++; addr++; | |
551 } | |
552 | |
553 buf[i] = '\0'; | |
554 return true; | |
555 } | |
556 | |
557 #define USE_SHARED_SPACES_SYM "UseSharedSpaces" | |
558 // mangled symbol name for Arguments::SharedArchivePath | |
559 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_" | |
560 | |
561 static int | |
562 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) { | |
563 Debugger* dbg = (Debugger*) cd; | |
564 JNIEnv* env = dbg->env; | |
565 jobject this_obj = dbg->this_obj; | |
566 const char* jvm_name = 0; | |
567 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL || | |
568 (jvm_name = strstr(obj_name, "libjvm_g.so")) != NULL) { | |
569 jvm_name = obj_name; | |
570 } else { | |
571 return 0; | |
572 } | |
573 | |
574 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
575 | |
576 // initialize classes[_g].jsa file descriptor field. | |
577 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1); | |
578 | |
579 // check whether class sharing is on by reading variable "UseSharedSpaces" | |
580 psaddr_t useSharedSpacesAddr = 0; | |
581 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr); | |
582 if (useSharedSpacesAddr == 0) { | |
583 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1); | |
584 } | |
585 | |
586 // read the value of the flag "UseSharedSpaces" | |
529
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587 // Since hotspot types are not available to build this library. So |
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588 // equivalent type "jboolean" is used to read the value of "UseSharedSpaces" |
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589 // which is same as hotspot type "bool". |
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590 jboolean value = 0; |
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591 if (read_jboolean(ph, useSharedSpacesAddr, &value) != true) { |
0 | 592 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1); |
529
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593 } else if ((int)value == 0) { |
0 | 594 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n"); |
595 return 1; | |
596 } | |
597 | |
598 char classes_jsa[PATH_MAX]; | |
599 psaddr_t sharedArchivePathAddrAddr = 0; | |
600 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr); | |
601 if (sharedArchivePathAddrAddr == 0) { | |
602 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n"); | |
603 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
604 } | |
605 | |
606 uintptr_t sharedArchivePathAddr = 0; | |
607 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) { | |
608 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n"); | |
609 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
610 } | |
611 | |
612 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) { | |
613 print_debug("can't find read 'Arguments::SharedArchivePath' value\n"); | |
614 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
615 } | |
616 | |
617 print_debug("looking for %s\n", classes_jsa); | |
618 | |
619 // open the classes[_g].jsa | |
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620 int fd = libsaproc_open(classes_jsa, O_RDONLY); |
0 | 621 if (fd < 0) { |
622 char errMsg[ERR_MSG_SIZE]; | |
623 sprintf(errMsg, "can't open shared archive file %s", classes_jsa); | |
624 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
625 } else { | |
626 print_debug("opened shared archive file %s\n", classes_jsa); | |
627 } | |
628 | |
629 // parse classes[_g].jsa | |
630 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader)); | |
631 if (pheader == NULL) { | |
632 close(fd); | |
633 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1); | |
634 } | |
635 | |
636 memset(pheader, 0, sizeof(struct FileMapHeader)); | |
637 // read FileMapHeader | |
638 size_t n = read(fd, pheader, sizeof(struct FileMapHeader)); | |
639 if (n != sizeof(struct FileMapHeader)) { | |
640 free(pheader); | |
641 close(fd); | |
642 char errMsg[ERR_MSG_SIZE]; | |
643 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa); | |
644 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
645 } | |
646 | |
647 // check file magic | |
648 if (pheader->_magic != 0xf00baba2) { | |
649 free(pheader); | |
650 close(fd); | |
651 char errMsg[ERR_MSG_SIZE]; | |
652 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2", | |
653 classes_jsa, pheader->_magic); | |
654 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
655 } | |
656 | |
657 // check version | |
658 if (pheader->_version != CURRENT_ARCHIVE_VERSION) { | |
659 free(pheader); | |
660 close(fd); | |
661 char errMsg[ERR_MSG_SIZE]; | |
662 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d", | |
663 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION); | |
664 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
665 } | |
666 | |
667 if (_libsaproc_debug) { | |
668 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
669 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n", | |
670 pheader->_space[m]._file_offset, pheader->_space[m]._base, | |
671 pheader->_space[m]._used, pheader->_space[m]._read_only); | |
672 } | |
673 } | |
674 | |
675 // FIXME: For now, omitting other checks such as VM version etc. | |
676 | |
677 // store class archive file fd and map header in debugger object fields | |
678 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd); | |
679 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader); | |
680 return 1; | |
681 } | |
682 | |
683 } // extern "C" | |
684 | |
685 // error messages for proc_arg_grab failure codes. The messages are | |
686 // modified versions of comments against corresponding #defines in | |
687 // libproc.h. | |
688 static const char* proc_arg_grab_errmsgs[] = { | |
689 "", | |
690 /* G_NOPROC */ "No such process", | |
691 /* G_NOCORE */ "No such core file", | |
692 /* G_NOPROCORCORE */ "No such process or core", | |
693 /* G_NOEXEC */ "Cannot locate executable file", | |
694 /* G_ZOMB */ "Zombie processs", | |
695 /* G_PERM */ "No permission to attach", | |
696 /* G_BUSY */ "Another process has already attached", | |
697 /* G_SYS */ "System process - can not attach", | |
698 /* G_SELF */ "Process is self - can't debug myself!", | |
699 /* G_INTR */ "Interrupt received while grabbing", | |
700 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger", | |
701 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?", | |
702 /* G_ELF */ "Libelf error while parsing an ELF file", | |
703 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?", | |
704 }; | |
705 | |
706 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) { | |
707 jboolean isCopy; | |
708 int gcode; | |
709 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy); | |
710 CHECK_EXCEPTION; | |
711 | |
712 // some older versions of libproc.so crash when trying to attach 32 bit | |
713 // debugger to 64 bit core file. check and throw error. | |
714 #ifndef _LP64 | |
715 atoi(cmdLine_cstr); | |
716 if (errno) { | |
717 // core file | |
718 int core_fd; | |
719 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) { | |
720 Elf32_Ehdr e32; | |
721 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) && | |
722 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 && | |
723 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) { | |
724 close(core_fd); | |
725 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger"); | |
726 } | |
727 close(core_fd); | |
728 } | |
729 // all other conditions are handled by libproc.so. | |
730 } | |
731 #endif | |
732 | |
733 // connect to process/core | |
734 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode); | |
735 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr); | |
736 if (! ph) { | |
737 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) { | |
738 char errMsg[ERR_MSG_SIZE]; | |
739 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]); | |
740 THROW_NEW_DEBUGGER_EXCEPTION(errMsg); | |
741 } else { | |
742 if (_libsaproc_debug && gcode == G_STRANGE) { | |
743 perror("libsaproc DEBUG: "); | |
744 } | |
745 if (isProcess) { | |
746 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!"); | |
747 } else { | |
748 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!"); | |
749 } | |
750 } | |
751 } | |
752 | |
753 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't | |
754 // support such cross-bit-debugging. check for that combination and throw error. | |
755 #ifdef _LP64 | |
756 int data_model; | |
757 if (ps_pdmodel(ph, &data_model) != PS_OK) { | |
758 Prelease(ph, PRELEASE_CLEAR); | |
759 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)"); | |
760 } | |
761 if (data_model == PR_MODEL_ILP32) { | |
762 Prelease(ph, PRELEASE_CLEAR); | |
763 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger"); | |
764 } | |
765 #endif | |
766 | |
767 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph); | |
768 | |
769 Debugger dbg; | |
770 dbg.env = env; | |
771 dbg.this_obj = this_obj; | |
772 jthrowable exception = 0; | |
773 if (! isProcess) { | |
774 /* | |
775 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ. | |
776 * These pages are mapped from the file "classes[_g].jsa". MAP_SHARED pages are not dumped | |
777 * in Solaris core.To read shared heap pages, we have to read classes[_g].jsa file. | |
778 */ | |
779 Pobject_iter(ph, init_classsharing_workaround, &dbg); | |
780 exception = env->ExceptionOccurred(); | |
781 if (exception) { | |
782 env->ExceptionClear(); | |
783 detach_internal(env, this_obj); | |
784 env->Throw(exception); | |
785 return; | |
786 } | |
787 } | |
788 | |
789 /* | |
790 * Iterate over the process mappings looking | |
791 * for libthread and then dlopen the appropriate | |
792 * libthread_db and get function pointers. | |
793 */ | |
794 Pobject_iter(ph, init_libthread_db_ptrs, &dbg); | |
795 exception = env->ExceptionOccurred(); | |
796 if (exception) { | |
797 env->ExceptionClear(); | |
798 if (!sa_ignore_threaddb) { | |
799 detach_internal(env, this_obj); | |
800 env->Throw(exception); | |
801 } | |
802 return; | |
803 } | |
804 | |
805 // init libthread_db and create thread_db agent | |
806 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID); | |
807 if (p_td_init == 0) { | |
808 if (!sa_ignore_threaddb) { | |
809 detach_internal(env, this_obj); | |
810 } | |
811 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!"); | |
812 } | |
813 | |
814 if (p_td_init() != TD_OK) { | |
815 if (!sa_ignore_threaddb) { | |
816 detach_internal(env, this_obj); | |
817 } | |
818 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!"); | |
819 } | |
820 | |
821 p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID); | |
822 | |
823 td_thragent_t *p_td_thragent_t = 0; | |
824 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) { | |
825 if (!sa_ignore_threaddb) { | |
826 detach_internal(env, this_obj); | |
827 } | |
828 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!"); | |
829 } | |
830 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t); | |
831 | |
832 } | |
833 | |
834 /* | |
835 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
836 * Method: attach0 | |
837 * Signature: (Ljava/lang/String;)V | |
838 * Description: process detach | |
839 */ | |
840 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2 | |
841 (JNIEnv *env, jobject this_obj, jstring pid) { | |
842 attach_internal(env, this_obj, pid, JNI_TRUE); | |
843 } | |
844 | |
845 /* | |
846 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
847 * Method: attach0 | |
848 * Signature: (Ljava/lang/String;Ljava/lang/String;)V | |
849 * Description: core file detach | |
850 */ | |
851 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 | |
852 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) { | |
853 // ignore executable file name, libproc.so can detect a.out name anyway. | |
854 attach_internal(env, this_obj, corefile, JNI_FALSE); | |
855 } | |
856 | |
857 | |
858 /* | |
859 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
860 * Method: detach0 | |
861 * Signature: ()V | |
862 * Description: process/core file detach | |
863 */ | |
864 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0 | |
865 (JNIEnv *env, jobject this_obj) { | |
866 detach_internal(env, this_obj); | |
867 } | |
868 | |
869 /* | |
870 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
871 * Method: getRemoteProcessAddressSize0 | |
872 * Signature: ()I | |
873 * Description: get process/core address size | |
874 */ | |
875 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0 | |
876 (JNIEnv *env, jobject this_obj) { | |
877 jlong p_ps_prochandle; | |
878 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
879 int data_model = PR_MODEL_ILP32; | |
880 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model); | |
881 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64); | |
882 return (jint) data_model == PR_MODEL_ILP32? 32 : 64; | |
883 } | |
884 | |
885 /* | |
886 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
887 * Method: getPageSize0 | |
888 * Signature: ()I | |
889 * Description: get process/core page size | |
890 */ | |
891 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0 | |
892 (JNIEnv *env, jobject this_obj) { | |
893 | |
894 /* | |
895 We are not yet attached to a java process or core file. getPageSize is called from | |
896 the constructor of ProcDebuggerLocal. The following won't work! | |
897 | |
898 jlong p_ps_prochandle; | |
899 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
900 CHECK_EXCEPTION_(-1); | |
901 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle; | |
902 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ) | |
903 : getpagesize(); | |
904 | |
905 So even though core may have been generated with a different page size settings, for now | |
906 call getpagesize. | |
907 */ | |
908 | |
909 return getpagesize(); | |
910 } | |
911 | |
912 /* | |
913 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
914 * Method: getThreadIntegerRegisterSet0 | |
915 * Signature: (J)[J | |
916 * Description: get gregset for a given thread specified by thread id | |
917 */ | |
918 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0 | |
919 (JNIEnv *env, jobject this_obj, jlong tid) { | |
920 // map the thread id to thread handle | |
921 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); | |
922 | |
923 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
924 if (p_td_thragent_t == 0) { | |
925 return 0; | |
926 } | |
927 | |
928 td_thrhandle_t thr_handle; | |
929 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) { | |
930 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0); | |
931 } | |
932 | |
933 p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID); | |
934 prgregset_t gregs; | |
935 p_td_thr_getgregs(&thr_handle, gregs); | |
936 | |
937 jlongArray res = env->NewLongArray(NPRGREG); | |
938 CHECK_EXCEPTION_(0); | |
939 jboolean isCopy; | |
940 jlong* ptr = env->GetLongArrayElements(res, &isCopy); | |
941 for (int i = 0; i < NPRGREG; i++) { | |
942 ptr[i] = (jlong) (uintptr_t) gregs[i]; | |
943 } | |
944 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT); | |
945 return res; | |
946 } | |
947 | |
948 /* | |
949 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
950 * Method: fillThreadList0 | |
951 * Signature: (Ljava/util/List;)V | |
952 * Description: fills thread list of the debuggee process/core | |
953 */ | |
954 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0 | |
955 (JNIEnv *env, jobject this_obj, jobject list) { | |
956 | |
957 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
958 if (p_td_thragent_t == 0) { | |
959 return; | |
960 } | |
961 | |
962 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); | |
963 | |
964 DebuggerWithObject dbgo; | |
965 dbgo.env = env; | |
966 dbgo.this_obj = this_obj; | |
967 dbgo.obj = list; | |
968 | |
969 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo, | |
970 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
971 } | |
972 | |
973 /* | |
974 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
975 * Method: fillCFrameList0 | |
976 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame; | |
977 * Description: fills CFrame list for a given thread | |
978 */ | |
979 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0 | |
980 (JNIEnv *env, jobject this_obj, jlongArray regsArray) { | |
981 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
982 | |
983 DebuggerWith2Objects dbgo2; | |
984 dbgo2.env = env; | |
985 dbgo2.this_obj = this_obj; | |
986 dbgo2.obj = NULL; | |
987 dbgo2.obj2 = NULL; | |
988 | |
989 jboolean isCopy; | |
990 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy); | |
991 CHECK_EXCEPTION_(0); | |
992 | |
993 prgregset_t gregs; | |
994 for (int i = 0; i < NPRGREG; i++) { | |
995 gregs[i] = (uintptr_t) ptr[i]; | |
996 } | |
997 | |
998 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT); | |
999 CHECK_EXCEPTION_(0); | |
1000 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, fill_cframe_list, &dbgo2); | |
1001 return dbgo2.obj; | |
1002 } | |
1003 | |
1004 /* | |
1005 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1006 * Method: fillLoadObjectList0 | |
1007 * Signature: (Ljava/util/List;)V | |
1008 * Description: fills shared objects of the debuggee process/core | |
1009 */ | |
1010 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0 | |
1011 (JNIEnv *env, jobject this_obj, jobject list) { | |
1012 DebuggerWithObject dbgo; | |
1013 dbgo.env = env; | |
1014 dbgo.this_obj = this_obj; | |
1015 dbgo.obj = list; | |
1016 | |
1017 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1018 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo); | |
1019 } | |
1020 | |
1021 /* | |
1022 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1023 * Method: readBytesFromProcess0 | |
1024 * Signature: (JJ)[B | |
1025 * Description: read bytes from debuggee process/core | |
1026 */ | |
1027 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0 | |
1028 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) { | |
1029 | |
1030 jbyteArray array = env->NewByteArray(numBytes); | |
1031 CHECK_EXCEPTION_(0); | |
1032 jboolean isCopy; | |
1033 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy); | |
1034 CHECK_EXCEPTION_(0); | |
1035 | |
1036 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1037 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle, | |
1038 (psaddr_t)address, bufPtr, (size_t)numBytes); | |
1039 | |
1040 if (ret != PS_OK) { | |
1041 // part of the class sharing workaround. try shared heap area | |
1042 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
1043 if (classes_jsa_fd != -1 && address != (jlong)0) { | |
1044 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address); | |
1045 | |
1046 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
1047 // walk through the shared mappings -- we just have 4 of them. | |
1048 // so, linear walking is okay. | |
1049 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
1050 | |
1051 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE | |
1052 // and hence will be read by libproc. Besides, the file copy may be | |
1053 // stale because the process might have modified those pages. | |
1054 if (pheader->_space[m]._read_only) { | |
1055 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base; | |
1056 size_t usedSize = pheader->_space[m]._used; | |
1057 if (address >= baseAddress && address < (baseAddress + usedSize)) { | |
1058 // the given address falls in this shared heap area | |
1059 print_debug("found shared map at 0x%lx\n", (long) baseAddress); | |
1060 | |
1061 | |
1062 // If more data is asked than actually mapped from file, we need to zero fill | |
1063 // till the end-of-page boundary. But, java array new does that for us. we just | |
1064 // need to read as much as data available. | |
1065 | |
1066 #define MIN2(x, y) (((x) < (y))? (x) : (y)) | |
1067 | |
1068 jlong diff = address - baseAddress; | |
1069 jlong bytesToRead = MIN2(numBytes, usedSize - diff); | |
1070 off_t offset = pheader->_space[m]._file_offset + off_t(diff); | |
1071 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset); | |
1072 if (bytesRead != bytesToRead) { | |
1073 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1074 print_debug("shared map read failed\n"); | |
1075 return jbyteArray(0); | |
1076 } else { | |
1077 print_debug("shared map read succeeded\n"); | |
1078 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1079 return array; | |
1080 } | |
1081 } // is in current map | |
1082 } // is read only map | |
1083 } // for shared maps | |
1084 } // classes_jsa_fd != -1 | |
1085 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1086 return jbyteArray(0); | |
1087 } else { | |
1088 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1089 return array; | |
1090 } | |
1091 } | |
1092 | |
1093 /* | |
1094 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1095 * Method: writeBytesToProcess0 | |
1096 * Signature: (JJ[B)V | |
1097 * Description: write bytes into debugger process | |
1098 */ | |
1099 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0 | |
1100 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) { | |
1101 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1102 jboolean isCopy; | |
1103 jbyte* ptr = env->GetByteArrayElements(data, &isCopy); | |
1104 CHECK_EXCEPTION; | |
1105 | |
1106 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) { | |
1107 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1108 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!"); | |
1109 } | |
1110 | |
1111 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1112 } | |
1113 | |
1114 /* | |
1115 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1116 * Method: suspend0 | |
1117 * Signature: ()V | |
1118 */ | |
1119 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0 | |
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 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000); | |
1124 } | |
1125 | |
1126 /* | |
1127 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1128 * Method: resume0 | |
1129 * Signature: ()V | |
1130 */ | |
1131 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0 | |
1132 (JNIEnv *env, jobject this_obj) { | |
1133 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1134 // for now don't check return value. revisit this again. | |
1135 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP); | |
1136 } | |
1137 | |
1138 /* | |
1139 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1140 * Method: lookupByName0 | |
1141 * Signature: (Ljava/lang/String;Ljava/lang/String;)J | |
1142 * Description: symbol lookup by name | |
1143 */ | |
1144 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0 | |
1145 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) { | |
1146 jlong p_ps_prochandle; | |
1147 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1148 | |
1149 jboolean isCopy; | |
1150 const char* objectName_cstr = NULL; | |
1151 if (objectName != NULL) { | |
1152 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy); | |
1153 CHECK_EXCEPTION_(0); | |
1154 } else { | |
1155 objectName_cstr = PR_OBJ_EVERY; | |
1156 } | |
1157 | |
1158 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy); | |
1159 CHECK_EXCEPTION_(0); | |
1160 | |
1161 psaddr_t symbol_addr = (psaddr_t) 0; | |
1162 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr, | |
1163 symbolName_cstr, &symbol_addr); | |
1164 | |
1165 if (symbol_addr == 0) { | |
1166 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr); | |
1167 } | |
1168 | |
1169 if (objectName_cstr != PR_OBJ_EVERY) { | |
1170 env->ReleaseStringUTFChars(objectName, objectName_cstr); | |
1171 } | |
1172 env->ReleaseStringUTFChars(symbolName, symbolName_cstr); | |
1173 return (jlong) (uintptr_t) symbol_addr; | |
1174 } | |
1175 | |
1176 /* | |
1177 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1178 * Method: lookupByAddress0 | |
1179 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; | |
1180 * Description: lookup symbol name for a given address | |
1181 */ | |
1182 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0 | |
1183 (JNIEnv *env, jobject this_obj, jlong address) { | |
1184 jlong p_ps_prochandle; | |
1185 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1186 | |
1187 char nameBuf[SYMBOL_BUF_SIZE + 1]; | |
1188 GElf_Sym sym; | |
1189 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address, | |
1190 nameBuf, sizeof(nameBuf), &sym); | |
1191 if (res != 0) { // failed | |
1192 return 0; | |
1193 } | |
1194 | |
1195 jstring resSym = env->NewStringUTF(nameBuf); | |
1196 CHECK_EXCEPTION_(0); | |
1197 | |
1198 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value)); | |
1199 } | |
1200 | |
1201 /* | |
1202 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1203 * Method: demangle0 | |
1204 * Signature: (Ljava/lang/String;)Ljava/lang/String; | |
1205 */ | |
1206 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0 | |
1207 (JNIEnv *env, jobject this_object, jstring name) { | |
1208 jboolean isCopy; | |
1209 const char* ptr = env->GetStringUTFChars(name, &isCopy); | |
1210 char buf[2*SYMBOL_BUF_SIZE + 1]; | |
1211 jstring res = 0; | |
1212 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) { | |
1213 res = env->NewStringUTF(buf); | |
1214 } else { | |
1215 res = name; | |
1216 } | |
1217 env->ReleaseStringUTFChars(name, ptr); | |
1218 return res; | |
1219 } | |
1220 | |
1221 /* | |
1222 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1223 * Method: initIDs | |
1224 * Signature: ()V | |
1225 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class | |
1226 */ | |
1227 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs | |
1228 (JNIEnv *env, jclass clazz) { | |
1229 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL; | |
1230 if (_libsaproc_debug) { | |
1231 // propagate debug mode to libproc.so | |
1232 static const char* var = "LIBPROC_DEBUG=1"; | |
1233 putenv((char*)var); | |
1234 } | |
1235 | |
1236 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL); | |
1237 if (libproc_handle == 0) | |
1238 THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!"); | |
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 } |