Commit | Line | Data |
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c40a57e5 AB |
1 | /* |
2 | * Babeltrace - Debug Information State Tracker | |
3 | * | |
4 | * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation | |
5 | * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com> | |
6 | * Copyright (c) 2015 Antoine Busque <abusque@efficios.com> | |
ff9ce920 | 7 | * Copyright (c) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
c40a57e5 AB |
8 | * |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
28 | #include <assert.h> | |
29 | #include <glib.h> | |
30 | #include <babeltrace/types.h> | |
31 | #include <babeltrace/ctf-ir/metadata.h> | |
32 | #include <babeltrace/debuginfo.h> | |
33 | #include <babeltrace/so-info.h> | |
ff9ce920 | 34 | #include <babeltrace/babeltrace-internal.h> |
c40a57e5 AB |
35 | |
36 | struct proc_debug_info_sources { | |
37 | /* | |
47857613 | 38 | * Hash table: base address (pointer to uint64_t) to so info; owned by |
c40a57e5 AB |
39 | * proc_debug_info_sources. |
40 | */ | |
41 | GHashTable *baddr_to_so_info; | |
42 | ||
43 | /* | |
47857613 JG |
44 | * Hash table: IP (pointer to uint64_t) to (struct debug_info_source *); |
45 | * owned by proc_debug_info_sources. | |
c40a57e5 AB |
46 | */ |
47 | GHashTable *ip_to_debug_info_src; | |
48 | }; | |
49 | ||
50 | struct debug_info { | |
51 | /* | |
47857613 JG |
52 | * Hash table of VPIDs (pointer to int64_t) to |
53 | * (struct ctf_proc_debug_infos*); owned by debug_info. | |
c40a57e5 AB |
54 | */ |
55 | GHashTable *vpid_to_proc_dbg_info_src; | |
56 | GQuark q_statedump_soinfo; | |
57 | GQuark q_statedump_debug_link; | |
58 | GQuark q_statedump_build_id; | |
59 | GQuark q_statedump_start; | |
60 | GQuark q_dl_open; | |
61 | }; | |
62 | ||
63 | static | |
64 | int debug_info_init(struct debug_info *info) | |
65 | { | |
66 | info->q_statedump_soinfo = g_quark_from_string( | |
67 | "lttng_ust_statedump:soinfo"); | |
68 | info->q_statedump_debug_link = g_quark_from_string( | |
69 | "lttng_ust_statedump:debug_link)"); | |
70 | info->q_statedump_build_id = g_quark_from_string( | |
71 | "lttng_ust_statedump:build_id"); | |
72 | info->q_statedump_start = g_quark_from_string( | |
73 | "lttng_ust_statedump:start"); | |
74 | info->q_dl_open = g_quark_from_string("lttng_ust_dl:dlopen"); | |
75 | ||
76 | return so_info_init(); | |
77 | } | |
78 | ||
79 | static | |
80 | void debug_info_source_destroy(struct debug_info_source *debug_info_src) | |
81 | { | |
82 | if (!debug_info_src) { | |
83 | return; | |
84 | } | |
85 | ||
86 | free(debug_info_src->func); | |
a7a607cf JG |
87 | free(debug_info_src->src_path); |
88 | free(debug_info_src->bin_path); | |
c40a57e5 AB |
89 | g_free(debug_info_src); |
90 | } | |
91 | ||
ff9ce920 JG |
92 | /* |
93 | * Returns the location of a path's file (the last element of the path). | |
94 | * Returns the original path on error. | |
95 | */ | |
96 | static | |
97 | const char *get_filename_from_path(const char *path) | |
98 | { | |
99 | size_t i = strlen(path); | |
100 | ||
101 | if (i == 0) { | |
102 | goto end; | |
103 | } | |
104 | ||
105 | if (path[i - 1] == '/') { | |
106 | /* | |
107 | * Path ends with a trailing slash, no filename to return. | |
108 | * Return the original path. | |
109 | */ | |
110 | goto end; | |
111 | } | |
112 | ||
113 | while (i-- > 0) { | |
114 | if (path[i] == '/') { | |
115 | path = &path[i + 1]; | |
116 | goto end; | |
117 | } | |
118 | } | |
119 | end: | |
120 | return path; | |
121 | } | |
122 | ||
c40a57e5 AB |
123 | static |
124 | struct debug_info_source *debug_info_source_create_from_so(struct so_info *so, | |
125 | uint64_t ip) | |
126 | { | |
127 | int ret; | |
128 | struct debug_info_source *debug_info_src = NULL; | |
129 | struct source_location *src_loc = NULL; | |
130 | ||
131 | debug_info_src = g_new0(struct debug_info_source, 1); | |
132 | ||
133 | if (!debug_info_src) { | |
134 | goto end; | |
135 | } | |
136 | ||
137 | /* Lookup function name */ | |
138 | ret = so_info_lookup_function_name(so, ip, &debug_info_src->func); | |
139 | if (ret) { | |
140 | goto error; | |
141 | } | |
142 | ||
143 | /* Can't retrieve src_loc from ELF only, skip it */ | |
144 | if (so->is_elf_only) { | |
145 | goto end; | |
146 | } | |
147 | ||
148 | /* Lookup source location */ | |
149 | ret = so_info_lookup_source_location(so, ip, &src_loc); | |
150 | if (ret) { | |
151 | goto error; | |
152 | } | |
153 | ||
154 | if (src_loc) { | |
155 | debug_info_src->line_no = src_loc->line_no; | |
156 | ||
157 | if (src_loc->filename) { | |
a7a607cf JG |
158 | debug_info_src->src_path = strdup(src_loc->filename); |
159 | if (!debug_info_src->src_path) { | |
c40a57e5 AB |
160 | goto error; |
161 | } | |
ff9ce920 | 162 | |
a7a607cf | 163 | debug_info_src->short_src_path = get_filename_from_path( |
ff9ce920 JG |
164 | src_loc->filename); |
165 | ||
c40a57e5 AB |
166 | } |
167 | ||
168 | source_location_destroy(src_loc); | |
169 | } | |
170 | ||
a7a607cf JG |
171 | if (so->elf_path) { |
172 | debug_info_src->bin_path = strdup(so->elf_path); | |
173 | if (!debug_info_src->bin_path) { | |
174 | goto error; | |
175 | } | |
176 | ||
177 | debug_info_src->short_bin_path = get_filename_from_path( | |
178 | debug_info_src->bin_path); | |
179 | } | |
180 | ||
c40a57e5 AB |
181 | end: |
182 | return debug_info_src; | |
183 | ||
184 | error: | |
185 | debug_info_source_destroy(debug_info_src); | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | static | |
190 | void proc_debug_info_sources_destroy( | |
191 | struct proc_debug_info_sources *proc_dbg_info_src) | |
192 | { | |
193 | if (!proc_dbg_info_src) { | |
194 | return; | |
195 | } | |
196 | ||
197 | if (proc_dbg_info_src->baddr_to_so_info) { | |
198 | g_hash_table_destroy(proc_dbg_info_src->baddr_to_so_info); | |
199 | } | |
200 | ||
201 | if (proc_dbg_info_src->ip_to_debug_info_src) { | |
202 | g_hash_table_destroy(proc_dbg_info_src->ip_to_debug_info_src); | |
203 | } | |
204 | ||
205 | g_free(proc_dbg_info_src); | |
206 | } | |
207 | ||
208 | static | |
209 | struct proc_debug_info_sources *proc_debug_info_sources_create(void) | |
210 | { | |
211 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
212 | ||
213 | proc_dbg_info_src = g_new0(struct proc_debug_info_sources, 1); | |
214 | if (!proc_dbg_info_src) { | |
215 | goto end; | |
216 | } | |
217 | ||
218 | proc_dbg_info_src->baddr_to_so_info = g_hash_table_new_full( | |
47857613 JG |
219 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, |
220 | (GDestroyNotify) so_info_destroy); | |
c40a57e5 AB |
221 | if (!proc_dbg_info_src->baddr_to_so_info) { |
222 | goto error; | |
223 | } | |
224 | ||
225 | proc_dbg_info_src->ip_to_debug_info_src = g_hash_table_new_full( | |
47857613 | 226 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, |
c40a57e5 AB |
227 | (GDestroyNotify) debug_info_source_destroy); |
228 | if (!proc_dbg_info_src->ip_to_debug_info_src) { | |
229 | goto error; | |
230 | } | |
231 | ||
232 | end: | |
233 | return proc_dbg_info_src; | |
234 | ||
235 | error: | |
236 | proc_debug_info_sources_destroy(proc_dbg_info_src); | |
237 | return NULL; | |
238 | } | |
239 | ||
240 | static | |
241 | struct proc_debug_info_sources *proc_debug_info_sources_ht_get_entry( | |
242 | GHashTable *ht, int64_t vpid) | |
243 | { | |
47857613 | 244 | gpointer key = g_new0(int64_t, 1); |
c40a57e5 AB |
245 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; |
246 | ||
47857613 JG |
247 | if (!key) { |
248 | goto end; | |
249 | } | |
250 | ||
251 | *((int64_t *) key) = vpid; | |
252 | ||
c40a57e5 AB |
253 | /* Exists? Return it */ |
254 | proc_dbg_info_src = g_hash_table_lookup(ht, key); | |
255 | if (proc_dbg_info_src) { | |
256 | goto end; | |
257 | } | |
258 | ||
259 | /* Otherwise, create and return it */ | |
260 | proc_dbg_info_src = proc_debug_info_sources_create(); | |
261 | if (!proc_dbg_info_src) { | |
262 | goto end; | |
263 | } | |
264 | ||
265 | g_hash_table_insert(ht, key, proc_dbg_info_src); | |
47857613 JG |
266 | /* Ownership passed to ht */ |
267 | key = NULL; | |
c40a57e5 | 268 | end: |
47857613 | 269 | g_free(key); |
c40a57e5 AB |
270 | return proc_dbg_info_src; |
271 | } | |
272 | ||
273 | static | |
274 | struct debug_info_source *proc_debug_info_sources_get_entry( | |
275 | struct proc_debug_info_sources *proc_dbg_info_src, uint64_t ip) | |
276 | { | |
277 | struct debug_info_source *debug_info_src = NULL; | |
47857613 | 278 | gpointer key = g_new0(uint64_t, 1); |
c40a57e5 AB |
279 | GHashTableIter iter; |
280 | gpointer baddr, value; | |
281 | ||
47857613 JG |
282 | if (!key) { |
283 | goto end; | |
284 | } | |
285 | ||
286 | *((uint64_t *) key) = ip; | |
287 | ||
c40a57e5 AB |
288 | /* Look in IP to debug infos hash table first. */ |
289 | debug_info_src = g_hash_table_lookup( | |
290 | proc_dbg_info_src->ip_to_debug_info_src, | |
47857613 | 291 | key); |
c40a57e5 AB |
292 | if (debug_info_src) { |
293 | goto end; | |
294 | } | |
295 | ||
296 | /* Check in all so_infos. */ | |
297 | g_hash_table_iter_init(&iter, proc_dbg_info_src->baddr_to_so_info); | |
298 | ||
299 | while (g_hash_table_iter_next(&iter, &baddr, &value)) | |
300 | { | |
301 | struct so_info *so = value; | |
302 | ||
303 | if (!so_info_has_address(value, ip)) { | |
304 | continue; | |
305 | } | |
306 | ||
47857613 JG |
307 | /* |
308 | * Found; add it to cache. | |
309 | * | |
310 | * FIXME: this should be bounded in size (and implement | |
311 | * a caching policy), and entries should be prunned when | |
312 | * libraries are unmapped. | |
313 | */ | |
c40a57e5 AB |
314 | debug_info_src = debug_info_source_create_from_so(so, ip); |
315 | if (debug_info_src) { | |
316 | g_hash_table_insert( | |
317 | proc_dbg_info_src->ip_to_debug_info_src, | |
47857613 JG |
318 | key, debug_info_src); |
319 | /* Ownership passed to ht. */ | |
320 | key = NULL; | |
c40a57e5 AB |
321 | } |
322 | break; | |
323 | } | |
324 | ||
325 | end: | |
47857613 | 326 | free(key); |
c40a57e5 AB |
327 | return debug_info_src; |
328 | } | |
329 | ||
330 | BT_HIDDEN | |
331 | struct debug_info_source *debug_info_query(struct debug_info *debug_info, | |
332 | int64_t vpid, uint64_t ip) | |
333 | { | |
334 | struct debug_info_source *dbg_info_src = NULL; | |
335 | struct proc_debug_info_sources *proc_dbg_info_src; | |
336 | ||
337 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
338 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
339 | if (!proc_dbg_info_src) { | |
340 | goto end; | |
341 | } | |
342 | ||
343 | dbg_info_src = proc_debug_info_sources_get_entry( | |
344 | proc_dbg_info_src, ip); | |
345 | if (!dbg_info_src) { | |
346 | goto end; | |
347 | } | |
348 | ||
349 | end: | |
350 | return dbg_info_src; | |
351 | } | |
352 | ||
353 | BT_HIDDEN | |
354 | struct debug_info *debug_info_create(void) | |
355 | { | |
356 | int ret; | |
357 | struct debug_info *debug_info; | |
358 | ||
359 | debug_info = g_new0(struct debug_info, 1); | |
360 | if (!debug_info) { | |
361 | goto end; | |
362 | } | |
363 | ||
47857613 JG |
364 | debug_info->vpid_to_proc_dbg_info_src = g_hash_table_new_full( |
365 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
c40a57e5 AB |
366 | (GDestroyNotify) proc_debug_info_sources_destroy); |
367 | if (!debug_info->vpid_to_proc_dbg_info_src) { | |
368 | goto error; | |
369 | } | |
370 | ||
371 | ret = debug_info_init(debug_info); | |
372 | if (ret) { | |
373 | goto error; | |
374 | } | |
375 | ||
376 | end: | |
377 | return debug_info; | |
378 | error: | |
379 | g_free(debug_info); | |
380 | return NULL; | |
381 | } | |
382 | ||
383 | BT_HIDDEN | |
384 | void debug_info_destroy(struct debug_info *debug_info) | |
385 | { | |
386 | if (!debug_info) { | |
387 | goto end; | |
388 | } | |
389 | ||
390 | if (debug_info->vpid_to_proc_dbg_info_src) { | |
391 | g_hash_table_destroy(debug_info->vpid_to_proc_dbg_info_src); | |
392 | } | |
393 | ||
394 | g_free(debug_info); | |
395 | end: | |
396 | return; | |
397 | } | |
398 | ||
399 | static | |
400 | void handle_statedump_build_id_event(struct debug_info *debug_info, | |
401 | struct ctf_event_definition *event_def) | |
402 | { | |
403 | struct proc_debug_info_sources *proc_dbg_info_src; | |
404 | struct bt_definition *event_fields_def = NULL; | |
405 | struct bt_definition *sec_def = NULL; | |
406 | struct bt_definition *baddr_def = NULL; | |
407 | struct bt_definition *vpid_def = NULL; | |
408 | struct bt_definition *build_id_def = NULL; | |
409 | struct definition_sequence *build_id_seq; | |
410 | struct so_info *so = NULL; | |
411 | int i; | |
412 | int64_t vpid; | |
413 | uint64_t baddr; | |
414 | uint8_t *build_id = NULL; | |
415 | uint64_t build_id_len; | |
416 | ||
417 | event_fields_def = (struct bt_definition *) event_def->event_fields; | |
418 | sec_def = (struct bt_definition *) | |
419 | event_def->stream->stream_event_context; | |
420 | ||
421 | if (!event_fields_def || !sec_def) { | |
422 | goto end; | |
423 | } | |
424 | ||
425 | baddr_def = bt_lookup_definition(event_fields_def, "_baddr"); | |
426 | if (!baddr_def) { | |
427 | goto end; | |
428 | } | |
429 | ||
430 | vpid_def = bt_lookup_definition(sec_def, "_vpid"); | |
431 | if (!vpid_def) { | |
432 | goto end; | |
433 | } | |
434 | ||
435 | build_id_def = bt_lookup_definition(event_fields_def, "_build_id"); | |
436 | if (!build_id_def) { | |
437 | goto end; | |
438 | } | |
439 | ||
440 | if (baddr_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
441 | goto end; | |
442 | } | |
443 | ||
444 | if (vpid_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
445 | goto end; | |
446 | } | |
447 | ||
448 | if (build_id_def->declaration->id != BT_CTF_TYPE_ID_SEQUENCE) { | |
449 | goto end; | |
450 | } | |
451 | ||
452 | baddr = bt_get_unsigned_int(baddr_def); | |
453 | vpid = bt_get_signed_int(vpid_def); | |
454 | build_id_seq = container_of(build_id_def, | |
455 | struct definition_sequence, p); | |
456 | build_id_len = build_id_seq->length->value._unsigned; | |
457 | ||
458 | build_id = g_malloc(build_id_len); | |
459 | if (!build_id) { | |
460 | goto end; | |
461 | } | |
462 | ||
463 | for (i = 0; i < build_id_len; ++i) { | |
464 | struct bt_definition **field; | |
465 | ||
466 | field = (struct bt_definition **) &g_ptr_array_index( | |
467 | build_id_seq->elems, i); | |
468 | build_id[i] = bt_get_unsigned_int(*field); | |
469 | } | |
470 | ||
471 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
472 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
473 | if (!proc_dbg_info_src) { | |
474 | goto end; | |
475 | } | |
476 | ||
477 | so = g_hash_table_lookup(proc_dbg_info_src->baddr_to_so_info, | |
478 | (gpointer) &baddr); | |
479 | if (!so) { | |
480 | /* | |
481 | * The build_id event comes after the so has been | |
482 | * created. If it isn't found, just ignore this event. | |
483 | */ | |
484 | goto end; | |
485 | } | |
486 | ||
487 | so_info_set_build_id(so, build_id, build_id_len); | |
488 | ||
489 | end: | |
490 | free(build_id); | |
491 | return; | |
492 | } | |
493 | ||
494 | static | |
495 | void handle_statedump_debug_link_event(struct debug_info *debug_info, | |
496 | struct ctf_event_definition *event_def) | |
497 | { | |
498 | struct proc_debug_info_sources *proc_dbg_info_src; | |
499 | struct bt_definition *event_fields_def = NULL; | |
500 | struct bt_definition *sec_def = NULL; | |
501 | struct bt_definition *baddr_def = NULL; | |
502 | struct bt_definition *vpid_def = NULL; | |
503 | struct bt_definition *filename_def = NULL; | |
504 | struct bt_definition *crc32_def = NULL; | |
505 | struct so_info *so = NULL; | |
506 | int64_t vpid; | |
507 | uint64_t baddr; | |
508 | char *filename = NULL; | |
509 | uint32_t crc32; | |
510 | ||
511 | event_fields_def = (struct bt_definition *) event_def->event_fields; | |
512 | sec_def = (struct bt_definition *) | |
513 | event_def->stream->stream_event_context; | |
514 | ||
515 | if (!event_fields_def || !sec_def) { | |
516 | goto end; | |
517 | } | |
518 | ||
519 | baddr_def = bt_lookup_definition(event_fields_def, "_baddr"); | |
520 | if (!baddr_def) { | |
521 | goto end; | |
522 | } | |
523 | ||
524 | vpid_def = bt_lookup_definition(sec_def, "_vpid"); | |
525 | if (!vpid_def) { | |
526 | goto end; | |
527 | } | |
528 | ||
529 | filename_def = bt_lookup_definition(event_fields_def, "_filename"); | |
530 | if (!filename_def) { | |
531 | goto end; | |
532 | } | |
533 | ||
534 | crc32_def = bt_lookup_definition(event_fields_def, "_crc32"); | |
535 | if (!crc32_def) { | |
536 | goto end; | |
537 | } | |
538 | ||
539 | if (baddr_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
540 | goto end; | |
541 | } | |
542 | ||
543 | if (vpid_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
544 | goto end; | |
545 | } | |
546 | ||
547 | if (filename_def->declaration->id != BT_CTF_TYPE_ID_STRING) { | |
548 | goto end; | |
549 | } | |
550 | ||
551 | if (crc32_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
552 | goto end; | |
553 | } | |
554 | ||
555 | baddr = bt_get_unsigned_int(baddr_def); | |
556 | vpid = bt_get_signed_int(vpid_def); | |
557 | ||
558 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
559 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
560 | if (!proc_dbg_info_src) { | |
561 | goto end; | |
562 | } | |
563 | ||
564 | so = g_hash_table_lookup(proc_dbg_info_src->baddr_to_so_info, | |
565 | (gpointer) &baddr); | |
566 | if (!so) { | |
567 | /* | |
568 | * The debug_link event comes after the so has been | |
569 | * created. If it isn't found, just ignore this event. | |
570 | */ | |
571 | goto end; | |
572 | } | |
573 | ||
574 | filename = bt_get_string(filename_def); | |
575 | crc32 = bt_get_unsigned_int(crc32_def); | |
576 | ||
577 | so_info_set_debug_link(so, filename, crc32); | |
578 | ||
579 | end: | |
580 | return; | |
581 | } | |
582 | ||
583 | static | |
584 | void handle_statedump_soinfo_event(struct debug_info *debug_info, | |
585 | struct ctf_event_definition *event_def) | |
586 | { | |
587 | struct bt_definition *baddr_def = NULL; | |
588 | struct bt_definition *memsz_def = NULL; | |
589 | struct bt_definition *sopath_def = NULL; | |
590 | struct bt_definition *vpid_def = NULL; | |
591 | struct bt_definition *event_fields_def = NULL; | |
592 | struct bt_definition *sec_def = NULL; | |
593 | struct proc_debug_info_sources *proc_dbg_info_src; | |
594 | struct so_info *so; | |
595 | uint64_t baddr, memsz; | |
596 | int64_t vpid; | |
597 | const char *sopath; | |
47857613 | 598 | gpointer key = NULL; |
c40a57e5 AB |
599 | |
600 | event_fields_def = (struct bt_definition *) event_def->event_fields; | |
601 | sec_def = (struct bt_definition *) | |
602 | event_def->stream->stream_event_context; | |
603 | ||
604 | if (!event_fields_def || !sec_def) { | |
605 | goto end; | |
606 | } | |
607 | ||
608 | baddr_def = bt_lookup_definition(event_fields_def, "_baddr"); | |
609 | if (!baddr_def) { | |
610 | goto end; | |
611 | } | |
612 | ||
613 | memsz_def = bt_lookup_definition(event_fields_def, "_memsz"); | |
614 | if (!memsz_def) { | |
615 | goto end; | |
616 | } | |
617 | ||
618 | sopath_def = bt_lookup_definition(event_fields_def, "_sopath"); | |
619 | if (!sopath_def) { | |
620 | goto end; | |
621 | } | |
622 | ||
623 | vpid_def = bt_lookup_definition(sec_def, "_vpid"); | |
624 | if (!vpid_def) { | |
625 | goto end; | |
626 | } | |
627 | ||
628 | if (baddr_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
629 | goto end; | |
630 | } | |
631 | ||
632 | if (memsz_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
633 | goto end; | |
634 | } | |
635 | ||
636 | if (sopath_def->declaration->id != BT_CTF_TYPE_ID_STRING) { | |
637 | goto end; | |
638 | } | |
639 | ||
640 | if (vpid_def->declaration->id != BT_CTF_TYPE_ID_INTEGER) { | |
641 | goto end; | |
642 | } | |
643 | ||
644 | baddr = bt_get_unsigned_int(baddr_def); | |
645 | memsz = bt_get_unsigned_int(memsz_def); | |
646 | sopath = bt_get_string(sopath_def); | |
647 | vpid = bt_get_signed_int(vpid_def); | |
648 | ||
649 | if (!sopath) { | |
650 | goto end; | |
651 | } | |
652 | ||
653 | if (memsz == 0) { | |
654 | /* Ignore VDSO. */ | |
655 | goto end; | |
656 | } | |
657 | ||
658 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
659 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
660 | if (!proc_dbg_info_src) { | |
661 | goto end; | |
662 | } | |
663 | ||
47857613 JG |
664 | key = g_new0(uint64_t, 1); |
665 | if (!key) { | |
666 | goto end; | |
667 | } | |
668 | ||
669 | *((uint64_t *) key) = baddr; | |
670 | ||
c40a57e5 | 671 | so = g_hash_table_lookup(proc_dbg_info_src->baddr_to_so_info, |
47857613 | 672 | key); |
c40a57e5 AB |
673 | if (so) { |
674 | goto end; | |
675 | } | |
676 | ||
677 | so = so_info_create(sopath, baddr, memsz); | |
678 | if (!so) { | |
679 | goto end; | |
680 | } | |
681 | ||
682 | g_hash_table_insert(proc_dbg_info_src->baddr_to_so_info, | |
47857613 JG |
683 | key, so); |
684 | /* Ownership passed to ht. */ | |
685 | key = NULL; | |
c40a57e5 AB |
686 | |
687 | end: | |
47857613 | 688 | g_free(key); |
c40a57e5 AB |
689 | return; |
690 | } | |
691 | ||
692 | static | |
693 | void handle_statedump_start(struct debug_info *debug_info, | |
694 | struct ctf_event_definition *event_def) | |
695 | { | |
696 | struct bt_definition *vpid_def = NULL; | |
697 | struct bt_definition *sec_def = NULL; | |
698 | struct proc_debug_info_sources *proc_dbg_info_src; | |
699 | int64_t vpid; | |
700 | ||
701 | sec_def = (struct bt_definition *) | |
702 | event_def->stream->stream_event_context; | |
703 | if (!sec_def) { | |
704 | goto end; | |
705 | } | |
706 | ||
707 | vpid_def = bt_lookup_definition(sec_def, "_vpid"); | |
708 | if (!vpid_def) { | |
709 | goto end; | |
710 | } | |
711 | ||
712 | vpid = bt_get_signed_int(vpid_def); | |
713 | ||
714 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
715 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
716 | if (!proc_dbg_info_src) { | |
717 | goto end; | |
718 | } | |
719 | ||
720 | g_hash_table_remove_all(proc_dbg_info_src->baddr_to_so_info); | |
721 | g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src); | |
722 | ||
723 | end: | |
724 | return; | |
725 | } | |
726 | ||
727 | static | |
728 | void register_event_debug_infos(struct debug_info *debug_info, | |
729 | struct ctf_event_definition *event) | |
730 | { | |
731 | struct bt_definition *ip_def, *vpid_def; | |
732 | int64_t vpid; | |
733 | uint64_t ip; | |
734 | struct bt_definition *sec_def; | |
735 | ||
736 | /* Get stream event context definition. */ | |
737 | sec_def = (struct bt_definition *) event->stream->stream_event_context; | |
738 | if (!sec_def) { | |
739 | goto end; | |
740 | } | |
741 | ||
742 | /* Get "ip" and "vpid" definitions. */ | |
743 | vpid_def = bt_lookup_definition((struct bt_definition *) sec_def, | |
744 | "_vpid"); | |
745 | ip_def = bt_lookup_definition((struct bt_definition *) sec_def, "_ip"); | |
746 | ||
747 | if (!vpid_def || !ip_def) { | |
748 | goto end; | |
749 | } | |
750 | ||
751 | vpid = bt_get_signed_int(vpid_def); | |
752 | ip = bt_get_unsigned_int(ip_def); | |
753 | ||
754 | /* Get debug info for this context. */ | |
755 | ((struct definition_integer *) ip_def)->debug_info_src = | |
756 | debug_info_query(debug_info, vpid, ip); | |
757 | ||
758 | end: | |
759 | return; | |
760 | } | |
761 | ||
762 | BT_HIDDEN | |
763 | void debug_info_handle_event(struct debug_info *debug_info, | |
764 | struct ctf_event_definition *event) | |
765 | { | |
766 | struct ctf_event_declaration *event_class; | |
767 | struct ctf_stream_declaration *stream_class; | |
768 | ||
769 | if (!debug_info || !event) { | |
770 | goto end; | |
771 | } | |
772 | ||
773 | stream_class = event->stream->stream_class; | |
774 | event_class = g_ptr_array_index(stream_class->events_by_id, | |
775 | event->stream->event_id); | |
776 | ||
777 | if (event_class->name == debug_info->q_statedump_soinfo || | |
778 | event_class->name == debug_info->q_dl_open) { | |
779 | /* State dump/dlopen() */ | |
780 | handle_statedump_soinfo_event(debug_info, event); | |
781 | } else if (event_class->name == debug_info->q_statedump_start) { | |
782 | /* Start state dump */ | |
783 | handle_statedump_start(debug_info, event); | |
784 | } else if (event_class->name == debug_info->q_statedump_debug_link) { | |
785 | /* Debug link info */ | |
786 | handle_statedump_debug_link_event(debug_info, event); | |
787 | } else if (event_class->name == debug_info->q_statedump_build_id) { | |
788 | /* Build ID info */ | |
789 | handle_statedump_build_id_event(debug_info, event); | |
790 | } else { | |
791 | /* Other events: register debug infos */ | |
792 | register_event_debug_infos(debug_info, event); | |
793 | } | |
794 | ||
795 | end: | |
796 | return; | |
797 | } |