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Commit | Line | Data |
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a2928c42 ACM |
1 | #include "util.h" |
2 | #include "../perf.h" | |
4aa65636 | 3 | #include "session.h" |
a0055ae2 | 4 | #include "string.h" |
a2928c42 | 5 | #include "symbol.h" |
439d473b | 6 | #include "thread.h" |
a2928c42 | 7 | |
8f28827a FW |
8 | #include "debug.h" |
9 | ||
b32d133a | 10 | #include <asm/bug.h> |
a2928c42 ACM |
11 | #include <libelf.h> |
12 | #include <gelf.h> | |
13 | #include <elf.h> | |
f1617b40 | 14 | #include <limits.h> |
439d473b | 15 | #include <sys/utsname.h> |
2cdbc46d | 16 | |
c12e15e7 ACM |
17 | #ifndef NT_GNU_BUILD_ID |
18 | #define NT_GNU_BUILD_ID 3 | |
19 | #endif | |
20 | ||
94cb9e38 ACM |
21 | enum dso_origin { |
22 | DSO__ORIG_KERNEL = 0, | |
23 | DSO__ORIG_JAVA_JIT, | |
24 | DSO__ORIG_FEDORA, | |
25 | DSO__ORIG_UBUNTU, | |
26 | DSO__ORIG_BUILDID, | |
27 | DSO__ORIG_DSO, | |
439d473b | 28 | DSO__ORIG_KMODULE, |
94cb9e38 ACM |
29 | DSO__ORIG_NOT_FOUND, |
30 | }; | |
31 | ||
b0da954a | 32 | static void dsos__add(struct list_head *head, struct dso *dso); |
3610583c | 33 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
c338aee8 | 34 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
4aa65636 | 35 | struct perf_session *session, symbol_filter_t filter); |
cc612d81 ACM |
36 | static int vmlinux_path__nr_entries; |
37 | static char **vmlinux_path; | |
439d473b | 38 | |
75be6cf4 | 39 | struct symbol_conf symbol_conf = { |
b32d133a ACM |
40 | .use_modules = true, |
41 | .try_vmlinux_path = true, | |
42 | }; | |
43 | ||
3610583c ACM |
44 | bool dso__loaded(const struct dso *self, enum map_type type) |
45 | { | |
46 | return self->loaded & (1 << type); | |
47 | } | |
48 | ||
79406cd7 ACM |
49 | bool dso__sorted_by_name(const struct dso *self, enum map_type type) |
50 | { | |
51 | return self->sorted_by_name & (1 << type); | |
52 | } | |
53 | ||
3610583c ACM |
54 | static void dso__set_loaded(struct dso *self, enum map_type type) |
55 | { | |
56 | self->loaded |= (1 << type); | |
57 | } | |
58 | ||
79406cd7 ACM |
59 | static void dso__set_sorted_by_name(struct dso *self, enum map_type type) |
60 | { | |
61 | self->sorted_by_name |= (1 << type); | |
62 | } | |
63 | ||
6893d4ee ACM |
64 | static bool symbol_type__is_a(char symbol_type, enum map_type map_type) |
65 | { | |
66 | switch (map_type) { | |
67 | case MAP__FUNCTION: | |
68 | return symbol_type == 'T' || symbol_type == 'W'; | |
f1dfa0b1 ACM |
69 | case MAP__VARIABLE: |
70 | return symbol_type == 'D' || symbol_type == 'd'; | |
6893d4ee ACM |
71 | default: |
72 | return false; | |
73 | } | |
74 | } | |
75 | ||
fcf1203a | 76 | static void symbols__fixup_end(struct rb_root *self) |
af427bf5 | 77 | { |
fcf1203a | 78 | struct rb_node *nd, *prevnd = rb_first(self); |
2e538c4a | 79 | struct symbol *curr, *prev; |
af427bf5 ACM |
80 | |
81 | if (prevnd == NULL) | |
82 | return; | |
83 | ||
2e538c4a ACM |
84 | curr = rb_entry(prevnd, struct symbol, rb_node); |
85 | ||
af427bf5 | 86 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
2e538c4a ACM |
87 | prev = curr; |
88 | curr = rb_entry(nd, struct symbol, rb_node); | |
af427bf5 ACM |
89 | |
90 | if (prev->end == prev->start) | |
91 | prev->end = curr->start - 1; | |
af427bf5 | 92 | } |
2e538c4a ACM |
93 | |
94 | /* Last entry */ | |
95 | if (curr->end == curr->start) | |
96 | curr->end = roundup(curr->start, 4096); | |
af427bf5 ACM |
97 | } |
98 | ||
9958e1f0 | 99 | static void __map_groups__fixup_end(struct map_groups *self, enum map_type type) |
af427bf5 ACM |
100 | { |
101 | struct map *prev, *curr; | |
95011c60 | 102 | struct rb_node *nd, *prevnd = rb_first(&self->maps[type]); |
af427bf5 ACM |
103 | |
104 | if (prevnd == NULL) | |
105 | return; | |
106 | ||
107 | curr = rb_entry(prevnd, struct map, rb_node); | |
af427bf5 ACM |
108 | |
109 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { | |
110 | prev = curr; | |
111 | curr = rb_entry(nd, struct map, rb_node); | |
112 | prev->end = curr->start - 1; | |
2e538c4a | 113 | } |
90c83218 ACM |
114 | |
115 | /* | |
116 | * We still haven't the actual symbols, so guess the | |
117 | * last map final address. | |
118 | */ | |
119 | curr->end = ~0UL; | |
af427bf5 ACM |
120 | } |
121 | ||
9958e1f0 | 122 | static void map_groups__fixup_end(struct map_groups *self) |
23ea4a3f ACM |
123 | { |
124 | int i; | |
125 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
9958e1f0 | 126 | __map_groups__fixup_end(self, i); |
23ea4a3f ACM |
127 | } |
128 | ||
00a192b3 | 129 | static struct symbol *symbol__new(u64 start, u64 len, const char *name) |
a2928c42 | 130 | { |
0085c954 | 131 | size_t namelen = strlen(name) + 1; |
75be6cf4 | 132 | struct symbol *self = zalloc(symbol_conf.priv_size + |
36479484 ACM |
133 | sizeof(*self) + namelen); |
134 | if (self == NULL) | |
0b73da3f IM |
135 | return NULL; |
136 | ||
75be6cf4 ACM |
137 | if (symbol_conf.priv_size) |
138 | self = ((void *)self) + symbol_conf.priv_size; | |
36479484 | 139 | |
0b73da3f | 140 | self->start = start; |
6cfcc53e | 141 | self->end = len ? start + len - 1 : start; |
e4204992 | 142 | |
6beba7ad | 143 | pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
e4204992 | 144 | |
0b73da3f | 145 | memcpy(self->name, name, namelen); |
a2928c42 ACM |
146 | |
147 | return self; | |
148 | } | |
149 | ||
00a192b3 | 150 | static void symbol__delete(struct symbol *self) |
a2928c42 | 151 | { |
75be6cf4 | 152 | free(((void *)self) - symbol_conf.priv_size); |
a2928c42 ACM |
153 | } |
154 | ||
155 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) | |
156 | { | |
439d473b | 157 | return fprintf(fp, " %llx-%llx %s\n", |
a2928c42 ACM |
158 | self->start, self->end, self->name); |
159 | } | |
160 | ||
cfc10d3b ACM |
161 | static void dso__set_long_name(struct dso *self, char *name) |
162 | { | |
ef6ae724 ACM |
163 | if (name == NULL) |
164 | return; | |
cfc10d3b ACM |
165 | self->long_name = name; |
166 | self->long_name_len = strlen(name); | |
167 | } | |
168 | ||
169 | static void dso__set_basename(struct dso *self) | |
170 | { | |
171 | self->short_name = basename(self->long_name); | |
172 | } | |
173 | ||
00a192b3 | 174 | struct dso *dso__new(const char *name) |
a2928c42 ACM |
175 | { |
176 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); | |
177 | ||
178 | if (self != NULL) { | |
6a4694a4 | 179 | int i; |
a2928c42 | 180 | strcpy(self->name, name); |
cfc10d3b | 181 | dso__set_long_name(self, self->name); |
439d473b | 182 | self->short_name = self->name; |
6a4694a4 | 183 | for (i = 0; i < MAP__NR_TYPES; ++i) |
79406cd7 | 184 | self->symbols[i] = self->symbol_names[i] = RB_ROOT; |
52d422de | 185 | self->slen_calculated = 0; |
94cb9e38 | 186 | self->origin = DSO__ORIG_NOT_FOUND; |
8d06367f | 187 | self->loaded = 0; |
79406cd7 | 188 | self->sorted_by_name = 0; |
8d06367f | 189 | self->has_build_id = 0; |
a2928c42 ACM |
190 | } |
191 | ||
192 | return self; | |
193 | } | |
194 | ||
fcf1203a | 195 | static void symbols__delete(struct rb_root *self) |
a2928c42 ACM |
196 | { |
197 | struct symbol *pos; | |
fcf1203a | 198 | struct rb_node *next = rb_first(self); |
a2928c42 ACM |
199 | |
200 | while (next) { | |
201 | pos = rb_entry(next, struct symbol, rb_node); | |
202 | next = rb_next(&pos->rb_node); | |
fcf1203a | 203 | rb_erase(&pos->rb_node, self); |
00a192b3 | 204 | symbol__delete(pos); |
a2928c42 ACM |
205 | } |
206 | } | |
207 | ||
208 | void dso__delete(struct dso *self) | |
209 | { | |
6a4694a4 ACM |
210 | int i; |
211 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
212 | symbols__delete(&self->symbols[i]); | |
439d473b ACM |
213 | if (self->long_name != self->name) |
214 | free(self->long_name); | |
a2928c42 ACM |
215 | free(self); |
216 | } | |
217 | ||
8d06367f ACM |
218 | void dso__set_build_id(struct dso *self, void *build_id) |
219 | { | |
220 | memcpy(self->build_id, build_id, sizeof(self->build_id)); | |
221 | self->has_build_id = 1; | |
222 | } | |
223 | ||
fcf1203a | 224 | static void symbols__insert(struct rb_root *self, struct symbol *sym) |
a2928c42 | 225 | { |
fcf1203a | 226 | struct rb_node **p = &self->rb_node; |
a2928c42 | 227 | struct rb_node *parent = NULL; |
9cffa8d5 | 228 | const u64 ip = sym->start; |
a2928c42 ACM |
229 | struct symbol *s; |
230 | ||
231 | while (*p != NULL) { | |
232 | parent = *p; | |
233 | s = rb_entry(parent, struct symbol, rb_node); | |
234 | if (ip < s->start) | |
235 | p = &(*p)->rb_left; | |
236 | else | |
237 | p = &(*p)->rb_right; | |
238 | } | |
239 | rb_link_node(&sym->rb_node, parent, p); | |
fcf1203a | 240 | rb_insert_color(&sym->rb_node, self); |
a2928c42 ACM |
241 | } |
242 | ||
fcf1203a | 243 | static struct symbol *symbols__find(struct rb_root *self, u64 ip) |
a2928c42 ACM |
244 | { |
245 | struct rb_node *n; | |
246 | ||
247 | if (self == NULL) | |
248 | return NULL; | |
249 | ||
fcf1203a | 250 | n = self->rb_node; |
a2928c42 ACM |
251 | |
252 | while (n) { | |
253 | struct symbol *s = rb_entry(n, struct symbol, rb_node); | |
254 | ||
255 | if (ip < s->start) | |
256 | n = n->rb_left; | |
257 | else if (ip > s->end) | |
258 | n = n->rb_right; | |
259 | else | |
260 | return s; | |
261 | } | |
262 | ||
263 | return NULL; | |
264 | } | |
265 | ||
79406cd7 ACM |
266 | struct symbol_name_rb_node { |
267 | struct rb_node rb_node; | |
268 | struct symbol sym; | |
269 | }; | |
270 | ||
271 | static void symbols__insert_by_name(struct rb_root *self, struct symbol *sym) | |
272 | { | |
273 | struct rb_node **p = &self->rb_node; | |
274 | struct rb_node *parent = NULL; | |
275 | struct symbol_name_rb_node *symn = ((void *)sym) - sizeof(*parent), *s; | |
276 | ||
277 | while (*p != NULL) { | |
278 | parent = *p; | |
279 | s = rb_entry(parent, struct symbol_name_rb_node, rb_node); | |
280 | if (strcmp(sym->name, s->sym.name) < 0) | |
281 | p = &(*p)->rb_left; | |
282 | else | |
283 | p = &(*p)->rb_right; | |
284 | } | |
285 | rb_link_node(&symn->rb_node, parent, p); | |
286 | rb_insert_color(&symn->rb_node, self); | |
287 | } | |
288 | ||
289 | static void symbols__sort_by_name(struct rb_root *self, struct rb_root *source) | |
290 | { | |
291 | struct rb_node *nd; | |
292 | ||
293 | for (nd = rb_first(source); nd; nd = rb_next(nd)) { | |
294 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
295 | symbols__insert_by_name(self, pos); | |
296 | } | |
297 | } | |
298 | ||
299 | static struct symbol *symbols__find_by_name(struct rb_root *self, const char *name) | |
300 | { | |
301 | struct rb_node *n; | |
302 | ||
303 | if (self == NULL) | |
304 | return NULL; | |
305 | ||
306 | n = self->rb_node; | |
307 | ||
308 | while (n) { | |
309 | struct symbol_name_rb_node *s; | |
310 | int cmp; | |
311 | ||
312 | s = rb_entry(n, struct symbol_name_rb_node, rb_node); | |
313 | cmp = strcmp(name, s->sym.name); | |
314 | ||
315 | if (cmp < 0) | |
316 | n = n->rb_left; | |
317 | else if (cmp > 0) | |
318 | n = n->rb_right; | |
319 | else | |
320 | return &s->sym; | |
321 | } | |
322 | ||
323 | return NULL; | |
324 | } | |
325 | ||
326 | struct symbol *dso__find_symbol(struct dso *self, | |
327 | enum map_type type, u64 addr) | |
fcf1203a | 328 | { |
6a4694a4 | 329 | return symbols__find(&self->symbols[type], addr); |
fcf1203a ACM |
330 | } |
331 | ||
79406cd7 ACM |
332 | struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type, |
333 | const char *name) | |
334 | { | |
335 | return symbols__find_by_name(&self->symbol_names[type], name); | |
336 | } | |
337 | ||
338 | void dso__sort_by_name(struct dso *self, enum map_type type) | |
339 | { | |
340 | dso__set_sorted_by_name(self, type); | |
341 | return symbols__sort_by_name(&self->symbol_names[type], | |
342 | &self->symbols[type]); | |
343 | } | |
344 | ||
8d06367f | 345 | int build_id__sprintf(u8 *self, int len, char *bf) |
a2928c42 | 346 | { |
8d06367f ACM |
347 | char *bid = bf; |
348 | u8 *raw = self; | |
349 | int i; | |
a2928c42 | 350 | |
8d06367f ACM |
351 | for (i = 0; i < len; ++i) { |
352 | sprintf(bid, "%02x", *raw); | |
353 | ++raw; | |
354 | bid += 2; | |
355 | } | |
356 | ||
357 | return raw - self; | |
358 | } | |
359 | ||
9e03eb2d | 360 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
8d06367f ACM |
361 | { |
362 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
8d06367f ACM |
363 | |
364 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
9e03eb2d ACM |
365 | return fprintf(fp, "%s", sbuild_id); |
366 | } | |
367 | ||
95011c60 | 368 | size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) |
9e03eb2d ACM |
369 | { |
370 | struct rb_node *nd; | |
371 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); | |
372 | ||
373 | ret += dso__fprintf_buildid(self, fp); | |
6a4694a4 | 374 | ret += fprintf(fp, ")\n"); |
95011c60 ACM |
375 | for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { |
376 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
377 | ret += symbol__fprintf(pos, fp); | |
a2928c42 ACM |
378 | } |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
2e538c4a ACM |
383 | /* |
384 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, | |
385 | * so that we can in the next step set the symbol ->end address and then | |
386 | * call kernel_maps__split_kallsyms. | |
387 | */ | |
4e06255f | 388 | static int dso__load_all_kallsyms(struct dso *self, struct map *map) |
a2928c42 | 389 | { |
a2928c42 ACM |
390 | char *line = NULL; |
391 | size_t n; | |
4e06255f | 392 | struct rb_root *root = &self->symbols[map->type]; |
a2928c42 ACM |
393 | FILE *file = fopen("/proc/kallsyms", "r"); |
394 | ||
395 | if (file == NULL) | |
396 | goto out_failure; | |
397 | ||
398 | while (!feof(file)) { | |
9cffa8d5 | 399 | u64 start; |
a2928c42 ACM |
400 | struct symbol *sym; |
401 | int line_len, len; | |
402 | char symbol_type; | |
2e538c4a | 403 | char *symbol_name; |
a2928c42 ACM |
404 | |
405 | line_len = getline(&line, &n, file); | |
406 | if (line_len < 0) | |
407 | break; | |
408 | ||
409 | if (!line) | |
410 | goto out_failure; | |
411 | ||
412 | line[--line_len] = '\0'; /* \n */ | |
413 | ||
a0055ae2 | 414 | len = hex2u64(line, &start); |
a2928c42 ACM |
415 | |
416 | len++; | |
417 | if (len + 2 >= line_len) | |
418 | continue; | |
419 | ||
420 | symbol_type = toupper(line[len]); | |
6893d4ee | 421 | if (!symbol_type__is_a(symbol_type, map->type)) |
a2928c42 | 422 | continue; |
af427bf5 ACM |
423 | |
424 | symbol_name = line + len + 2; | |
2e538c4a ACM |
425 | /* |
426 | * Will fix up the end later, when we have all symbols sorted. | |
427 | */ | |
00a192b3 | 428 | sym = symbol__new(start, 0, symbol_name); |
af427bf5 | 429 | |
2e538c4a ACM |
430 | if (sym == NULL) |
431 | goto out_delete_line; | |
82164161 ACM |
432 | /* |
433 | * We will pass the symbols to the filter later, in | |
4e06255f | 434 | * map__split_kallsyms, when we have split the maps per module |
82164161 | 435 | */ |
4e06255f | 436 | symbols__insert(root, sym); |
2e538c4a ACM |
437 | } |
438 | ||
439 | free(line); | |
440 | fclose(file); | |
441 | ||
442 | return 0; | |
443 | ||
444 | out_delete_line: | |
445 | free(line); | |
446 | out_failure: | |
447 | return -1; | |
448 | } | |
449 | ||
450 | /* | |
451 | * Split the symbols into maps, making sure there are no overlaps, i.e. the | |
452 | * kernel range is broken in several maps, named [kernel].N, as we don't have | |
453 | * the original ELF section names vmlinux have. | |
454 | */ | |
9958e1f0 | 455 | static int dso__split_kallsyms(struct dso *self, struct map *map, |
4aa65636 | 456 | struct perf_session *session, symbol_filter_t filter) |
2e538c4a | 457 | { |
4e06255f | 458 | struct map *curr_map = map; |
2e538c4a ACM |
459 | struct symbol *pos; |
460 | int count = 0; | |
4e06255f ACM |
461 | struct rb_root *root = &self->symbols[map->type]; |
462 | struct rb_node *next = rb_first(root); | |
2e538c4a ACM |
463 | int kernel_range = 0; |
464 | ||
465 | while (next) { | |
466 | char *module; | |
467 | ||
468 | pos = rb_entry(next, struct symbol, rb_node); | |
469 | next = rb_next(&pos->rb_node); | |
470 | ||
471 | module = strchr(pos->name, '\t'); | |
472 | if (module) { | |
75be6cf4 | 473 | if (!symbol_conf.use_modules) |
1de8e245 ACM |
474 | goto discard_symbol; |
475 | ||
2e538c4a ACM |
476 | *module++ = '\0'; |
477 | ||
4e06255f | 478 | if (strcmp(self->name, module)) { |
4aa65636 | 479 | curr_map = map_groups__find_by_name(&session->kmaps, map->type, module); |
4e06255f | 480 | if (curr_map == NULL) { |
95011c60 ACM |
481 | pr_debug("/proc/{kallsyms,modules} " |
482 | "inconsistency!\n"); | |
af427bf5 ACM |
483 | return -1; |
484 | } | |
485 | } | |
2e538c4a ACM |
486 | /* |
487 | * So that we look just like we get from .ko files, | |
488 | * i.e. not prelinked, relative to map->start. | |
489 | */ | |
4e06255f ACM |
490 | pos->start = curr_map->map_ip(curr_map, pos->start); |
491 | pos->end = curr_map->map_ip(curr_map, pos->end); | |
492 | } else if (curr_map != map) { | |
2e538c4a ACM |
493 | char dso_name[PATH_MAX]; |
494 | struct dso *dso; | |
495 | ||
496 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", | |
497 | kernel_range++); | |
498 | ||
00a192b3 | 499 | dso = dso__new(dso_name); |
2e538c4a ACM |
500 | if (dso == NULL) |
501 | return -1; | |
502 | ||
4e06255f | 503 | curr_map = map__new2(pos->start, dso, map->type); |
2e538c4a ACM |
504 | if (map == NULL) { |
505 | dso__delete(dso); | |
506 | return -1; | |
507 | } | |
a2928c42 | 508 | |
4e06255f | 509 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
4aa65636 | 510 | map_groups__insert(&session->kmaps, curr_map); |
2e538c4a ACM |
511 | ++kernel_range; |
512 | } | |
a2928c42 | 513 | |
4e06255f | 514 | if (filter && filter(curr_map, pos)) { |
1de8e245 | 515 | discard_symbol: rb_erase(&pos->rb_node, root); |
00a192b3 | 516 | symbol__delete(pos); |
2e538c4a | 517 | } else { |
4e06255f ACM |
518 | if (curr_map != map) { |
519 | rb_erase(&pos->rb_node, root); | |
520 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); | |
2e538c4a | 521 | } |
9974f496 MG |
522 | count++; |
523 | } | |
a2928c42 ACM |
524 | } |
525 | ||
9974f496 | 526 | return count; |
2e538c4a | 527 | } |
a2928c42 | 528 | |
2e538c4a | 529 | |
4e06255f | 530 | static int dso__load_kallsyms(struct dso *self, struct map *map, |
4aa65636 | 531 | struct perf_session *session, symbol_filter_t filter) |
2e538c4a | 532 | { |
4e06255f | 533 | if (dso__load_all_kallsyms(self, map) < 0) |
2e538c4a ACM |
534 | return -1; |
535 | ||
4e06255f ACM |
536 | symbols__fixup_end(&self->symbols[map->type]); |
537 | self->origin = DSO__ORIG_KERNEL; | |
2e538c4a | 538 | |
4aa65636 | 539 | return dso__split_kallsyms(self, map, session, filter); |
af427bf5 ACM |
540 | } |
541 | ||
439d473b | 542 | static int dso__load_perf_map(struct dso *self, struct map *map, |
6beba7ad | 543 | symbol_filter_t filter) |
80d496be PE |
544 | { |
545 | char *line = NULL; | |
546 | size_t n; | |
547 | FILE *file; | |
548 | int nr_syms = 0; | |
549 | ||
439d473b | 550 | file = fopen(self->long_name, "r"); |
80d496be PE |
551 | if (file == NULL) |
552 | goto out_failure; | |
553 | ||
554 | while (!feof(file)) { | |
9cffa8d5 | 555 | u64 start, size; |
80d496be PE |
556 | struct symbol *sym; |
557 | int line_len, len; | |
558 | ||
559 | line_len = getline(&line, &n, file); | |
560 | if (line_len < 0) | |
561 | break; | |
562 | ||
563 | if (!line) | |
564 | goto out_failure; | |
565 | ||
566 | line[--line_len] = '\0'; /* \n */ | |
567 | ||
568 | len = hex2u64(line, &start); | |
569 | ||
570 | len++; | |
571 | if (len + 2 >= line_len) | |
572 | continue; | |
573 | ||
574 | len += hex2u64(line + len, &size); | |
575 | ||
576 | len++; | |
577 | if (len + 2 >= line_len) | |
578 | continue; | |
579 | ||
00a192b3 | 580 | sym = symbol__new(start, size, line + len); |
80d496be PE |
581 | |
582 | if (sym == NULL) | |
583 | goto out_delete_line; | |
584 | ||
439d473b | 585 | if (filter && filter(map, sym)) |
00a192b3 | 586 | symbol__delete(sym); |
80d496be | 587 | else { |
6a4694a4 | 588 | symbols__insert(&self->symbols[map->type], sym); |
80d496be PE |
589 | nr_syms++; |
590 | } | |
591 | } | |
592 | ||
593 | free(line); | |
594 | fclose(file); | |
595 | ||
596 | return nr_syms; | |
597 | ||
598 | out_delete_line: | |
599 | free(line); | |
600 | out_failure: | |
601 | return -1; | |
602 | } | |
603 | ||
a2928c42 ACM |
604 | /** |
605 | * elf_symtab__for_each_symbol - iterate thru all the symbols | |
606 | * | |
607 | * @self: struct elf_symtab instance to iterate | |
83a0944f | 608 | * @idx: uint32_t idx |
a2928c42 ACM |
609 | * @sym: GElf_Sym iterator |
610 | */ | |
83a0944f IM |
611 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
612 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ | |
613 | idx < nr_syms; \ | |
614 | idx++, gelf_getsym(syms, idx, &sym)) | |
a2928c42 ACM |
615 | |
616 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) | |
617 | { | |
618 | return GELF_ST_TYPE(sym->st_info); | |
619 | } | |
620 | ||
621 | static inline int elf_sym__is_function(const GElf_Sym *sym) | |
622 | { | |
623 | return elf_sym__type(sym) == STT_FUNC && | |
624 | sym->st_name != 0 && | |
81833130 | 625 | sym->st_shndx != SHN_UNDEF; |
a2928c42 ACM |
626 | } |
627 | ||
f1dfa0b1 ACM |
628 | static inline bool elf_sym__is_object(const GElf_Sym *sym) |
629 | { | |
630 | return elf_sym__type(sym) == STT_OBJECT && | |
631 | sym->st_name != 0 && | |
632 | sym->st_shndx != SHN_UNDEF; | |
633 | } | |
634 | ||
6cfcc53e MG |
635 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
636 | { | |
637 | return elf_sym__type(sym) == STT_NOTYPE && | |
638 | sym->st_name != 0 && | |
639 | sym->st_shndx != SHN_UNDEF && | |
640 | sym->st_shndx != SHN_ABS; | |
641 | } | |
642 | ||
643 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, | |
644 | const Elf_Data *secstrs) | |
645 | { | |
646 | return secstrs->d_buf + shdr->sh_name; | |
647 | } | |
648 | ||
649 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, | |
650 | const Elf_Data *secstrs) | |
651 | { | |
652 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; | |
653 | } | |
654 | ||
f1dfa0b1 ACM |
655 | static inline bool elf_sec__is_data(const GElf_Shdr *shdr, |
656 | const Elf_Data *secstrs) | |
657 | { | |
658 | return strstr(elf_sec__name(shdr, secstrs), "data") != NULL; | |
659 | } | |
660 | ||
a2928c42 ACM |
661 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
662 | const Elf_Data *symstrs) | |
663 | { | |
664 | return symstrs->d_buf + sym->st_name; | |
665 | } | |
666 | ||
667 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, | |
668 | GElf_Shdr *shp, const char *name, | |
83a0944f | 669 | size_t *idx) |
a2928c42 ACM |
670 | { |
671 | Elf_Scn *sec = NULL; | |
672 | size_t cnt = 1; | |
673 | ||
674 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
675 | char *str; | |
676 | ||
677 | gelf_getshdr(sec, shp); | |
678 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); | |
679 | if (!strcmp(name, str)) { | |
83a0944f IM |
680 | if (idx) |
681 | *idx = cnt; | |
a2928c42 ACM |
682 | break; |
683 | } | |
684 | ++cnt; | |
685 | } | |
686 | ||
687 | return sec; | |
688 | } | |
689 | ||
8ce998d6 ACM |
690 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
691 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ | |
692 | idx < nr_entries; \ | |
693 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) | |
694 | ||
695 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ | |
696 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ | |
697 | idx < nr_entries; \ | |
698 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) | |
699 | ||
a25e46c4 ACM |
700 | /* |
701 | * We need to check if we have a .dynsym, so that we can handle the | |
702 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it | |
703 | * .dynsym or .symtab). | |
704 | * And always look at the original dso, not at debuginfo packages, that | |
705 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). | |
706 | */ | |
82164161 ACM |
707 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
708 | symbol_filter_t filter) | |
8ce998d6 ACM |
709 | { |
710 | uint32_t nr_rel_entries, idx; | |
711 | GElf_Sym sym; | |
9cffa8d5 | 712 | u64 plt_offset; |
8ce998d6 ACM |
713 | GElf_Shdr shdr_plt; |
714 | struct symbol *f; | |
a25e46c4 | 715 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
8ce998d6 | 716 | Elf_Data *reldata, *syms, *symstrs; |
a25e46c4 ACM |
717 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
718 | size_t dynsym_idx; | |
719 | GElf_Ehdr ehdr; | |
8ce998d6 | 720 | char sympltname[1024]; |
a25e46c4 ACM |
721 | Elf *elf; |
722 | int nr = 0, symidx, fd, err = 0; | |
723 | ||
439d473b | 724 | fd = open(self->long_name, O_RDONLY); |
a25e46c4 ACM |
725 | if (fd < 0) |
726 | goto out; | |
727 | ||
84087126 | 728 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a25e46c4 ACM |
729 | if (elf == NULL) |
730 | goto out_close; | |
731 | ||
732 | if (gelf_getehdr(elf, &ehdr) == NULL) | |
733 | goto out_elf_end; | |
734 | ||
735 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, | |
736 | ".dynsym", &dynsym_idx); | |
737 | if (scn_dynsym == NULL) | |
738 | goto out_elf_end; | |
8ce998d6 | 739 | |
a25e46c4 | 740 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
741 | ".rela.plt", NULL); |
742 | if (scn_plt_rel == NULL) { | |
a25e46c4 | 743 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
744 | ".rel.plt", NULL); |
745 | if (scn_plt_rel == NULL) | |
a25e46c4 | 746 | goto out_elf_end; |
8ce998d6 ACM |
747 | } |
748 | ||
a25e46c4 ACM |
749 | err = -1; |
750 | ||
8ce998d6 | 751 | if (shdr_rel_plt.sh_link != dynsym_idx) |
a25e46c4 | 752 | goto out_elf_end; |
8ce998d6 | 753 | |
a25e46c4 ACM |
754 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
755 | goto out_elf_end; | |
8ce998d6 ACM |
756 | |
757 | /* | |
83a0944f | 758 | * Fetch the relocation section to find the idxes to the GOT |
8ce998d6 ACM |
759 | * and the symbols in the .dynsym they refer to. |
760 | */ | |
761 | reldata = elf_getdata(scn_plt_rel, NULL); | |
762 | if (reldata == NULL) | |
a25e46c4 | 763 | goto out_elf_end; |
8ce998d6 ACM |
764 | |
765 | syms = elf_getdata(scn_dynsym, NULL); | |
766 | if (syms == NULL) | |
a25e46c4 | 767 | goto out_elf_end; |
8ce998d6 | 768 | |
a25e46c4 | 769 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
8ce998d6 | 770 | if (scn_symstrs == NULL) |
a25e46c4 | 771 | goto out_elf_end; |
8ce998d6 ACM |
772 | |
773 | symstrs = elf_getdata(scn_symstrs, NULL); | |
774 | if (symstrs == NULL) | |
a25e46c4 | 775 | goto out_elf_end; |
8ce998d6 ACM |
776 | |
777 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; | |
778 | plt_offset = shdr_plt.sh_offset; | |
779 | ||
780 | if (shdr_rel_plt.sh_type == SHT_RELA) { | |
781 | GElf_Rela pos_mem, *pos; | |
782 | ||
783 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, | |
784 | nr_rel_entries) { | |
785 | symidx = GELF_R_SYM(pos->r_info); | |
786 | plt_offset += shdr_plt.sh_entsize; | |
787 | gelf_getsym(syms, symidx, &sym); | |
788 | snprintf(sympltname, sizeof(sympltname), | |
789 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
790 | ||
791 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 792 | sympltname); |
8ce998d6 | 793 | if (!f) |
a25e46c4 | 794 | goto out_elf_end; |
8ce998d6 | 795 | |
82164161 ACM |
796 | if (filter && filter(map, f)) |
797 | symbol__delete(f); | |
798 | else { | |
6a4694a4 | 799 | symbols__insert(&self->symbols[map->type], f); |
82164161 ACM |
800 | ++nr; |
801 | } | |
8ce998d6 ACM |
802 | } |
803 | } else if (shdr_rel_plt.sh_type == SHT_REL) { | |
804 | GElf_Rel pos_mem, *pos; | |
805 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, | |
806 | nr_rel_entries) { | |
807 | symidx = GELF_R_SYM(pos->r_info); | |
808 | plt_offset += shdr_plt.sh_entsize; | |
809 | gelf_getsym(syms, symidx, &sym); | |
810 | snprintf(sympltname, sizeof(sympltname), | |
811 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
812 | ||
813 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 814 | sympltname); |
8ce998d6 | 815 | if (!f) |
a25e46c4 | 816 | goto out_elf_end; |
8ce998d6 | 817 | |
82164161 ACM |
818 | if (filter && filter(map, f)) |
819 | symbol__delete(f); | |
820 | else { | |
6a4694a4 | 821 | symbols__insert(&self->symbols[map->type], f); |
82164161 ACM |
822 | ++nr; |
823 | } | |
8ce998d6 | 824 | } |
8ce998d6 ACM |
825 | } |
826 | ||
a25e46c4 ACM |
827 | err = 0; |
828 | out_elf_end: | |
829 | elf_end(elf); | |
830 | out_close: | |
831 | close(fd); | |
832 | ||
833 | if (err == 0) | |
834 | return nr; | |
835 | out: | |
6beba7ad ACM |
836 | pr_warning("%s: problems reading %s PLT info.\n", |
837 | __func__, self->long_name); | |
a25e46c4 | 838 | return 0; |
8ce998d6 ACM |
839 | } |
840 | ||
d45868d3 ACM |
841 | static bool elf_sym__is_a(GElf_Sym *self, enum map_type type) |
842 | { | |
843 | switch (type) { | |
844 | case MAP__FUNCTION: | |
845 | return elf_sym__is_function(self); | |
f1dfa0b1 ACM |
846 | case MAP__VARIABLE: |
847 | return elf_sym__is_object(self); | |
d45868d3 ACM |
848 | default: |
849 | return false; | |
850 | } | |
851 | } | |
852 | ||
853 | static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type) | |
854 | { | |
855 | switch (type) { | |
856 | case MAP__FUNCTION: | |
857 | return elf_sec__is_text(self, secstrs); | |
f1dfa0b1 ACM |
858 | case MAP__VARIABLE: |
859 | return elf_sec__is_data(self, secstrs); | |
d45868d3 ACM |
860 | default: |
861 | return false; | |
862 | } | |
863 | } | |
864 | ||
95011c60 | 865 | static int dso__load_sym(struct dso *self, struct map *map, |
4aa65636 | 866 | struct perf_session *session, const char *name, int fd, |
95011c60 | 867 | symbol_filter_t filter, int kernel, int kmodule) |
a2928c42 | 868 | { |
2e538c4a ACM |
869 | struct map *curr_map = map; |
870 | struct dso *curr_dso = self; | |
871 | size_t dso_name_len = strlen(self->short_name); | |
6cfcc53e | 872 | Elf_Data *symstrs, *secstrs; |
a2928c42 ACM |
873 | uint32_t nr_syms; |
874 | int err = -1; | |
83a0944f | 875 | uint32_t idx; |
a2928c42 ACM |
876 | GElf_Ehdr ehdr; |
877 | GElf_Shdr shdr; | |
878 | Elf_Data *syms; | |
879 | GElf_Sym sym; | |
a25e46c4 | 880 | Elf_Scn *sec, *sec_strndx; |
a2928c42 | 881 | Elf *elf; |
439d473b | 882 | int nr = 0; |
a2928c42 | 883 | |
84087126 | 884 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a2928c42 | 885 | if (elf == NULL) { |
6beba7ad | 886 | pr_err("%s: cannot read %s ELF file.\n", __func__, name); |
a2928c42 ACM |
887 | goto out_close; |
888 | } | |
889 | ||
890 | if (gelf_getehdr(elf, &ehdr) == NULL) { | |
6beba7ad | 891 | pr_err("%s: cannot get elf header.\n", __func__); |
a2928c42 ACM |
892 | goto out_elf_end; |
893 | } | |
894 | ||
895 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); | |
8ce998d6 | 896 | if (sec == NULL) { |
a25e46c4 ACM |
897 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
898 | if (sec == NULL) | |
8ce998d6 | 899 | goto out_elf_end; |
8ce998d6 | 900 | } |
a2928c42 ACM |
901 | |
902 | syms = elf_getdata(sec, NULL); | |
903 | if (syms == NULL) | |
904 | goto out_elf_end; | |
905 | ||
906 | sec = elf_getscn(elf, shdr.sh_link); | |
907 | if (sec == NULL) | |
908 | goto out_elf_end; | |
909 | ||
910 | symstrs = elf_getdata(sec, NULL); | |
911 | if (symstrs == NULL) | |
912 | goto out_elf_end; | |
913 | ||
6cfcc53e MG |
914 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
915 | if (sec_strndx == NULL) | |
916 | goto out_elf_end; | |
917 | ||
918 | secstrs = elf_getdata(sec_strndx, NULL); | |
9b30a26b | 919 | if (secstrs == NULL) |
6cfcc53e MG |
920 | goto out_elf_end; |
921 | ||
a2928c42 ACM |
922 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
923 | ||
e9fbc9dc | 924 | memset(&sym, 0, sizeof(sym)); |
d20ff6bd MG |
925 | if (!kernel) { |
926 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || | |
30d7a77d ACM |
927 | elf_section_by_name(elf, &ehdr, &shdr, |
928 | ".gnu.prelink_undo", | |
929 | NULL) != NULL); | |
d20ff6bd MG |
930 | } else self->adjust_symbols = 0; |
931 | ||
83a0944f | 932 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
a2928c42 | 933 | struct symbol *f; |
83a0944f | 934 | const char *elf_name; |
2e538c4a | 935 | char *demangled = NULL; |
6cfcc53e MG |
936 | int is_label = elf_sym__is_label(&sym); |
937 | const char *section_name; | |
a2928c42 | 938 | |
d45868d3 | 939 | if (!is_label && !elf_sym__is_a(&sym, map->type)) |
a2928c42 ACM |
940 | continue; |
941 | ||
942 | sec = elf_getscn(elf, sym.st_shndx); | |
943 | if (!sec) | |
944 | goto out_elf_end; | |
945 | ||
946 | gelf_getshdr(sec, &shdr); | |
6cfcc53e | 947 | |
d45868d3 | 948 | if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type)) |
6cfcc53e MG |
949 | continue; |
950 | ||
2e538c4a | 951 | elf_name = elf_sym__name(&sym, symstrs); |
6cfcc53e | 952 | section_name = elf_sec__name(&shdr, secstrs); |
0b73da3f | 953 | |
2e538c4a ACM |
954 | if (kernel || kmodule) { |
955 | char dso_name[PATH_MAX]; | |
956 | ||
957 | if (strcmp(section_name, | |
958 | curr_dso->short_name + dso_name_len) == 0) | |
959 | goto new_symbol; | |
960 | ||
961 | if (strcmp(section_name, ".text") == 0) { | |
962 | curr_map = map; | |
963 | curr_dso = self; | |
964 | goto new_symbol; | |
965 | } | |
966 | ||
967 | snprintf(dso_name, sizeof(dso_name), | |
968 | "%s%s", self->short_name, section_name); | |
969 | ||
4aa65636 | 970 | curr_map = map_groups__find_by_name(&session->kmaps, map->type, dso_name); |
2e538c4a ACM |
971 | if (curr_map == NULL) { |
972 | u64 start = sym.st_value; | |
973 | ||
974 | if (kmodule) | |
975 | start += map->start + shdr.sh_offset; | |
976 | ||
00a192b3 | 977 | curr_dso = dso__new(dso_name); |
2e538c4a ACM |
978 | if (curr_dso == NULL) |
979 | goto out_elf_end; | |
3610583c ACM |
980 | curr_map = map__new2(start, curr_dso, |
981 | MAP__FUNCTION); | |
2e538c4a ACM |
982 | if (curr_map == NULL) { |
983 | dso__delete(curr_dso); | |
984 | goto out_elf_end; | |
985 | } | |
ed52ce2e ACM |
986 | curr_map->map_ip = identity__map_ip; |
987 | curr_map->unmap_ip = identity__map_ip; | |
2e538c4a | 988 | curr_dso->origin = DSO__ORIG_KERNEL; |
4aa65636 | 989 | map_groups__insert(&session->kmaps, curr_map); |
b0da954a | 990 | dsos__add(&dsos__kernel, curr_dso); |
2e538c4a ACM |
991 | } else |
992 | curr_dso = curr_map->dso; | |
993 | ||
994 | goto new_symbol; | |
af427bf5 ACM |
995 | } |
996 | ||
2e538c4a | 997 | if (curr_dso->adjust_symbols) { |
6beba7ad ACM |
998 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
999 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, | |
1000 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); | |
f5812a7a | 1001 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
af427bf5 | 1002 | } |
28ac909b ACM |
1003 | /* |
1004 | * We need to figure out if the object was created from C++ sources | |
1005 | * DWARF DW_compile_unit has this, but we don't always have access | |
1006 | * to it... | |
1007 | */ | |
83a0944f | 1008 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
28ac909b | 1009 | if (demangled != NULL) |
83a0944f | 1010 | elf_name = demangled; |
2e538c4a | 1011 | new_symbol: |
00a192b3 | 1012 | f = symbol__new(sym.st_value, sym.st_size, elf_name); |
28ac909b | 1013 | free(demangled); |
a2928c42 ACM |
1014 | if (!f) |
1015 | goto out_elf_end; | |
1016 | ||
2e538c4a | 1017 | if (filter && filter(curr_map, f)) |
00a192b3 | 1018 | symbol__delete(f); |
69ee69f6 | 1019 | else { |
6a4694a4 | 1020 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
69ee69f6 ACM |
1021 | nr++; |
1022 | } | |
a2928c42 ACM |
1023 | } |
1024 | ||
2e538c4a ACM |
1025 | /* |
1026 | * For misannotated, zeroed, ASM function sizes. | |
1027 | */ | |
1028 | if (nr > 0) | |
6a4694a4 | 1029 | symbols__fixup_end(&self->symbols[map->type]); |
a2928c42 ACM |
1030 | err = nr; |
1031 | out_elf_end: | |
1032 | elf_end(elf); | |
1033 | out_close: | |
1034 | return err; | |
1035 | } | |
1036 | ||
78075caa ACM |
1037 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
1038 | { | |
1039 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; | |
1040 | } | |
1041 | ||
b0da954a | 1042 | static bool __dsos__read_build_ids(struct list_head *head) |
57f395a7 | 1043 | { |
e30a3d12 | 1044 | bool have_build_id = false; |
57f395a7 FW |
1045 | struct dso *pos; |
1046 | ||
b0da954a | 1047 | list_for_each_entry(pos, head, node) |
e30a3d12 ACM |
1048 | if (filename__read_build_id(pos->long_name, pos->build_id, |
1049 | sizeof(pos->build_id)) > 0) { | |
1050 | have_build_id = true; | |
1051 | pos->has_build_id = true; | |
1052 | } | |
57f395a7 | 1053 | |
e30a3d12 | 1054 | return have_build_id; |
57f395a7 FW |
1055 | } |
1056 | ||
b0da954a ACM |
1057 | bool dsos__read_build_ids(void) |
1058 | { | |
8b4825bf ACM |
1059 | bool kbuildids = __dsos__read_build_ids(&dsos__kernel), |
1060 | ubuildids = __dsos__read_build_ids(&dsos__user); | |
1061 | return kbuildids || ubuildids; | |
b0da954a ACM |
1062 | } |
1063 | ||
fd7a346e ACM |
1064 | /* |
1065 | * Align offset to 4 bytes as needed for note name and descriptor data. | |
1066 | */ | |
1067 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) | |
1068 | ||
2643ce11 | 1069 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
4d1e00a8 | 1070 | { |
2643ce11 | 1071 | int fd, err = -1; |
4d1e00a8 ACM |
1072 | GElf_Ehdr ehdr; |
1073 | GElf_Shdr shdr; | |
fd7a346e | 1074 | Elf_Data *data; |
4d1e00a8 | 1075 | Elf_Scn *sec; |
e57cfcda | 1076 | Elf_Kind ek; |
fd7a346e | 1077 | void *ptr; |
4d1e00a8 | 1078 | Elf *elf; |
4d1e00a8 | 1079 | |
2643ce11 ACM |
1080 | if (size < BUILD_ID_SIZE) |
1081 | goto out; | |
1082 | ||
1083 | fd = open(filename, O_RDONLY); | |
4d1e00a8 ACM |
1084 | if (fd < 0) |
1085 | goto out; | |
1086 | ||
84087126 | 1087 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
4d1e00a8 | 1088 | if (elf == NULL) { |
8d06367f | 1089 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
4d1e00a8 ACM |
1090 | goto out_close; |
1091 | } | |
1092 | ||
e57cfcda PE |
1093 | ek = elf_kind(elf); |
1094 | if (ek != ELF_K_ELF) | |
1095 | goto out_elf_end; | |
1096 | ||
4d1e00a8 | 1097 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
6beba7ad | 1098 | pr_err("%s: cannot get elf header.\n", __func__); |
4d1e00a8 ACM |
1099 | goto out_elf_end; |
1100 | } | |
1101 | ||
2643ce11 ACM |
1102 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
1103 | ".note.gnu.build-id", NULL); | |
fd7a346e ACM |
1104 | if (sec == NULL) { |
1105 | sec = elf_section_by_name(elf, &ehdr, &shdr, | |
1106 | ".notes", NULL); | |
1107 | if (sec == NULL) | |
1108 | goto out_elf_end; | |
1109 | } | |
4d1e00a8 | 1110 | |
fd7a346e ACM |
1111 | data = elf_getdata(sec, NULL); |
1112 | if (data == NULL) | |
4d1e00a8 | 1113 | goto out_elf_end; |
fd7a346e ACM |
1114 | |
1115 | ptr = data->d_buf; | |
1116 | while (ptr < (data->d_buf + data->d_size)) { | |
1117 | GElf_Nhdr *nhdr = ptr; | |
1118 | int namesz = NOTE_ALIGN(nhdr->n_namesz), | |
1119 | descsz = NOTE_ALIGN(nhdr->n_descsz); | |
1120 | const char *name; | |
1121 | ||
1122 | ptr += sizeof(*nhdr); | |
1123 | name = ptr; | |
1124 | ptr += namesz; | |
1125 | if (nhdr->n_type == NT_GNU_BUILD_ID && | |
1126 | nhdr->n_namesz == sizeof("GNU")) { | |
1127 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { | |
1128 | memcpy(bf, ptr, BUILD_ID_SIZE); | |
1129 | err = BUILD_ID_SIZE; | |
1130 | break; | |
1131 | } | |
1132 | } | |
1133 | ptr += descsz; | |
1134 | } | |
2643ce11 ACM |
1135 | out_elf_end: |
1136 | elf_end(elf); | |
1137 | out_close: | |
1138 | close(fd); | |
1139 | out: | |
1140 | return err; | |
1141 | } | |
1142 | ||
f1617b40 ACM |
1143 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
1144 | { | |
1145 | int fd, err = -1; | |
1146 | ||
1147 | if (size < BUILD_ID_SIZE) | |
1148 | goto out; | |
1149 | ||
1150 | fd = open(filename, O_RDONLY); | |
1151 | if (fd < 0) | |
1152 | goto out; | |
1153 | ||
1154 | while (1) { | |
1155 | char bf[BUFSIZ]; | |
1156 | GElf_Nhdr nhdr; | |
1157 | int namesz, descsz; | |
1158 | ||
1159 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) | |
1160 | break; | |
1161 | ||
fd7a346e ACM |
1162 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
1163 | descsz = NOTE_ALIGN(nhdr.n_descsz); | |
f1617b40 ACM |
1164 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
1165 | nhdr.n_namesz == sizeof("GNU")) { | |
1166 | if (read(fd, bf, namesz) != namesz) | |
1167 | break; | |
1168 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { | |
1169 | if (read(fd, build_id, | |
1170 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { | |
1171 | err = 0; | |
1172 | break; | |
1173 | } | |
1174 | } else if (read(fd, bf, descsz) != descsz) | |
1175 | break; | |
1176 | } else { | |
1177 | int n = namesz + descsz; | |
1178 | if (read(fd, bf, n) != n) | |
1179 | break; | |
1180 | } | |
1181 | } | |
1182 | close(fd); | |
1183 | out: | |
1184 | return err; | |
1185 | } | |
1186 | ||
94cb9e38 ACM |
1187 | char dso__symtab_origin(const struct dso *self) |
1188 | { | |
1189 | static const char origin[] = { | |
1190 | [DSO__ORIG_KERNEL] = 'k', | |
1191 | [DSO__ORIG_JAVA_JIT] = 'j', | |
1192 | [DSO__ORIG_FEDORA] = 'f', | |
1193 | [DSO__ORIG_UBUNTU] = 'u', | |
1194 | [DSO__ORIG_BUILDID] = 'b', | |
1195 | [DSO__ORIG_DSO] = 'd', | |
439d473b | 1196 | [DSO__ORIG_KMODULE] = 'K', |
94cb9e38 ACM |
1197 | }; |
1198 | ||
1199 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) | |
1200 | return '!'; | |
1201 | return origin[self->origin]; | |
1202 | } | |
1203 | ||
4aa65636 ACM |
1204 | int dso__load(struct dso *self, struct map *map, struct perf_session *session, |
1205 | symbol_filter_t filter) | |
a2928c42 | 1206 | { |
4d1e00a8 | 1207 | int size = PATH_MAX; |
c338aee8 | 1208 | char *name; |
d3379ab9 | 1209 | u8 build_id[BUILD_ID_SIZE]; |
a2928c42 ACM |
1210 | int ret = -1; |
1211 | int fd; | |
1212 | ||
3610583c | 1213 | dso__set_loaded(self, map->type); |
66bd8424 | 1214 | |
c338aee8 | 1215 | if (self->kernel) |
4aa65636 | 1216 | return dso__load_kernel_sym(self, map, session, filter); |
c338aee8 ACM |
1217 | |
1218 | name = malloc(size); | |
a2928c42 ACM |
1219 | if (!name) |
1220 | return -1; | |
1221 | ||
30d7a77d | 1222 | self->adjust_symbols = 0; |
f5812a7a | 1223 | |
94cb9e38 | 1224 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
6beba7ad | 1225 | ret = dso__load_perf_map(self, map, filter); |
94cb9e38 ACM |
1226 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
1227 | DSO__ORIG_NOT_FOUND; | |
1228 | return ret; | |
1229 | } | |
1230 | ||
1231 | self->origin = DSO__ORIG_FEDORA - 1; | |
80d496be | 1232 | |
a2928c42 ACM |
1233 | more: |
1234 | do { | |
94cb9e38 ACM |
1235 | self->origin++; |
1236 | switch (self->origin) { | |
1237 | case DSO__ORIG_FEDORA: | |
439d473b ACM |
1238 | snprintf(name, size, "/usr/lib/debug%s.debug", |
1239 | self->long_name); | |
a2928c42 | 1240 | break; |
94cb9e38 | 1241 | case DSO__ORIG_UBUNTU: |
439d473b ACM |
1242 | snprintf(name, size, "/usr/lib/debug%s", |
1243 | self->long_name); | |
a2928c42 | 1244 | break; |
94cb9e38 | 1245 | case DSO__ORIG_BUILDID: |
d3379ab9 ACM |
1246 | if (filename__read_build_id(self->long_name, build_id, |
1247 | sizeof(build_id))) { | |
1248 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; | |
1249 | ||
1250 | build_id__sprintf(build_id, sizeof(build_id), | |
1251 | build_id_hex); | |
4d1e00a8 ACM |
1252 | snprintf(name, size, |
1253 | "/usr/lib/debug/.build-id/%.2s/%s.debug", | |
d3379ab9 ACM |
1254 | build_id_hex, build_id_hex + 2); |
1255 | if (self->has_build_id) | |
1256 | goto compare_build_id; | |
1257 | break; | |
4d1e00a8 | 1258 | } |
94cb9e38 | 1259 | self->origin++; |
4d1e00a8 | 1260 | /* Fall thru */ |
94cb9e38 | 1261 | case DSO__ORIG_DSO: |
439d473b | 1262 | snprintf(name, size, "%s", self->long_name); |
a2928c42 ACM |
1263 | break; |
1264 | ||
1265 | default: | |
1266 | goto out; | |
1267 | } | |
a2928c42 | 1268 | |
8d06367f | 1269 | if (self->has_build_id) { |
d3379ab9 ACM |
1270 | if (filename__read_build_id(name, build_id, |
1271 | sizeof(build_id)) < 0) | |
8d06367f | 1272 | goto more; |
8d06367f | 1273 | compare_build_id: |
78075caa | 1274 | if (!dso__build_id_equal(self, build_id)) |
8d06367f ACM |
1275 | goto more; |
1276 | } | |
1277 | ||
a2928c42 ACM |
1278 | fd = open(name, O_RDONLY); |
1279 | } while (fd < 0); | |
1280 | ||
95011c60 | 1281 | ret = dso__load_sym(self, map, NULL, name, fd, filter, 0, 0); |
a2928c42 ACM |
1282 | close(fd); |
1283 | ||
1284 | /* | |
1285 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? | |
1286 | */ | |
1287 | if (!ret) | |
1288 | goto more; | |
1289 | ||
a25e46c4 | 1290 | if (ret > 0) { |
82164161 | 1291 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
a25e46c4 ACM |
1292 | if (nr_plt > 0) |
1293 | ret += nr_plt; | |
1294 | } | |
a2928c42 ACM |
1295 | out: |
1296 | free(name); | |
1340e6bb ACM |
1297 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
1298 | return 0; | |
a2928c42 ACM |
1299 | return ret; |
1300 | } | |
1301 | ||
79406cd7 ACM |
1302 | struct map *map_groups__find_by_name(struct map_groups *self, |
1303 | enum map_type type, const char *name) | |
439d473b ACM |
1304 | { |
1305 | struct rb_node *nd; | |
1306 | ||
79406cd7 | 1307 | for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { |
439d473b ACM |
1308 | struct map *map = rb_entry(nd, struct map, rb_node); |
1309 | ||
1310 | if (map->dso && strcmp(map->dso->name, name) == 0) | |
1311 | return map; | |
1312 | } | |
1313 | ||
1314 | return NULL; | |
1315 | } | |
1316 | ||
4aa65636 | 1317 | static int perf_session__set_modules_path_dir(struct perf_session *self, char *dirname) |
6cfcc53e | 1318 | { |
439d473b | 1319 | struct dirent *dent; |
439d473b | 1320 | DIR *dir = opendir(dirname); |
6cfcc53e | 1321 | |
439d473b | 1322 | if (!dir) { |
87f8ea4c | 1323 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
439d473b ACM |
1324 | return -1; |
1325 | } | |
6cfcc53e | 1326 | |
439d473b ACM |
1327 | while ((dent = readdir(dir)) != NULL) { |
1328 | char path[PATH_MAX]; | |
1329 | ||
1330 | if (dent->d_type == DT_DIR) { | |
1331 | if (!strcmp(dent->d_name, ".") || | |
1332 | !strcmp(dent->d_name, "..")) | |
1333 | continue; | |
1334 | ||
1335 | snprintf(path, sizeof(path), "%s/%s", | |
1336 | dirname, dent->d_name); | |
4aa65636 | 1337 | if (perf_session__set_modules_path_dir(self, path) < 0) |
439d473b ACM |
1338 | goto failure; |
1339 | } else { | |
1340 | char *dot = strrchr(dent->d_name, '.'), | |
1341 | dso_name[PATH_MAX]; | |
1342 | struct map *map; | |
cfc10d3b | 1343 | char *long_name; |
439d473b ACM |
1344 | |
1345 | if (dot == NULL || strcmp(dot, ".ko")) | |
1346 | continue; | |
1347 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
1348 | (int)(dot - dent->d_name), dent->d_name); | |
1349 | ||
a2a99e8e | 1350 | strxfrchar(dso_name, '-', '_'); |
4aa65636 | 1351 | map = map_groups__find_by_name(&self->kmaps, MAP__FUNCTION, dso_name); |
439d473b ACM |
1352 | if (map == NULL) |
1353 | continue; | |
1354 | ||
1355 | snprintf(path, sizeof(path), "%s/%s", | |
1356 | dirname, dent->d_name); | |
1357 | ||
cfc10d3b ACM |
1358 | long_name = strdup(path); |
1359 | if (long_name == NULL) | |
439d473b | 1360 | goto failure; |
cfc10d3b | 1361 | dso__set_long_name(map->dso, long_name); |
439d473b | 1362 | } |
439d473b | 1363 | } |
6cfcc53e | 1364 | |
c338aee8 | 1365 | return 0; |
439d473b ACM |
1366 | failure: |
1367 | closedir(dir); | |
1368 | return -1; | |
1369 | } | |
6cfcc53e | 1370 | |
4aa65636 | 1371 | static int perf_session__set_modules_path(struct perf_session *self) |
439d473b ACM |
1372 | { |
1373 | struct utsname uts; | |
1374 | char modules_path[PATH_MAX]; | |
6cfcc53e | 1375 | |
439d473b ACM |
1376 | if (uname(&uts) < 0) |
1377 | return -1; | |
6cfcc53e | 1378 | |
439d473b ACM |
1379 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
1380 | uts.release); | |
6cfcc53e | 1381 | |
4aa65636 | 1382 | return perf_session__set_modules_path_dir(self, modules_path); |
6cfcc53e MG |
1383 | } |
1384 | ||
439d473b ACM |
1385 | /* |
1386 | * Constructor variant for modules (where we know from /proc/modules where | |
1387 | * they are loaded) and for vmlinux, where only after we load all the | |
1388 | * symbols we'll know where it starts and ends. | |
1389 | */ | |
3610583c | 1390 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type) |
6cfcc53e | 1391 | { |
439d473b | 1392 | struct map *self = malloc(sizeof(*self)); |
6cfcc53e | 1393 | |
439d473b | 1394 | if (self != NULL) { |
439d473b | 1395 | /* |
afb7b4f0 | 1396 | * ->end will be filled after we load all the symbols |
439d473b | 1397 | */ |
3610583c | 1398 | map__init(self, type, start, 0, 0, dso); |
439d473b | 1399 | } |
afb7b4f0 | 1400 | |
439d473b ACM |
1401 | return self; |
1402 | } | |
1403 | ||
4aa65636 | 1404 | static int perf_session__create_module_maps(struct perf_session *self) |
439d473b ACM |
1405 | { |
1406 | char *line = NULL; | |
1407 | size_t n; | |
1408 | FILE *file = fopen("/proc/modules", "r"); | |
1409 | struct map *map; | |
6cfcc53e | 1410 | |
439d473b ACM |
1411 | if (file == NULL) |
1412 | return -1; | |
6cfcc53e | 1413 | |
439d473b ACM |
1414 | while (!feof(file)) { |
1415 | char name[PATH_MAX]; | |
1416 | u64 start; | |
1417 | struct dso *dso; | |
1418 | char *sep; | |
1419 | int line_len; | |
6cfcc53e | 1420 | |
439d473b ACM |
1421 | line_len = getline(&line, &n, file); |
1422 | if (line_len < 0) | |
1423 | break; | |
1424 | ||
1425 | if (!line) | |
1426 | goto out_failure; | |
1427 | ||
1428 | line[--line_len] = '\0'; /* \n */ | |
1429 | ||
1430 | sep = strrchr(line, 'x'); | |
1431 | if (sep == NULL) | |
1432 | continue; | |
1433 | ||
1434 | hex2u64(sep + 1, &start); | |
1435 | ||
1436 | sep = strchr(line, ' '); | |
1437 | if (sep == NULL) | |
1438 | continue; | |
1439 | ||
1440 | *sep = '\0'; | |
1441 | ||
1442 | snprintf(name, sizeof(name), "[%s]", line); | |
00a192b3 | 1443 | dso = dso__new(name); |
439d473b ACM |
1444 | |
1445 | if (dso == NULL) | |
1446 | goto out_delete_line; | |
1447 | ||
3610583c | 1448 | map = map__new2(start, dso, MAP__FUNCTION); |
439d473b ACM |
1449 | if (map == NULL) { |
1450 | dso__delete(dso); | |
1451 | goto out_delete_line; | |
6cfcc53e | 1452 | } |
439d473b | 1453 | |
f1617b40 ACM |
1454 | snprintf(name, sizeof(name), |
1455 | "/sys/module/%s/notes/.note.gnu.build-id", line); | |
1456 | if (sysfs__read_build_id(name, dso->build_id, | |
1457 | sizeof(dso->build_id)) == 0) | |
1458 | dso->has_build_id = true; | |
1459 | ||
439d473b | 1460 | dso->origin = DSO__ORIG_KMODULE; |
4aa65636 | 1461 | map_groups__insert(&self->kmaps, map); |
b0da954a | 1462 | dsos__add(&dsos__kernel, dso); |
6cfcc53e | 1463 | } |
439d473b ACM |
1464 | |
1465 | free(line); | |
1466 | fclose(file); | |
1467 | ||
4aa65636 | 1468 | return perf_session__set_modules_path(self); |
439d473b ACM |
1469 | |
1470 | out_delete_line: | |
1471 | free(line); | |
1472 | out_failure: | |
1473 | return -1; | |
6cfcc53e MG |
1474 | } |
1475 | ||
9958e1f0 | 1476 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
4aa65636 | 1477 | struct perf_session *session, |
6beba7ad | 1478 | const char *vmlinux, symbol_filter_t filter) |
a2928c42 | 1479 | { |
fbd733b8 | 1480 | int err = -1, fd; |
a2928c42 | 1481 | |
fbd733b8 ACM |
1482 | if (self->has_build_id) { |
1483 | u8 build_id[BUILD_ID_SIZE]; | |
1484 | ||
1485 | if (filename__read_build_id(vmlinux, build_id, | |
1486 | sizeof(build_id)) < 0) { | |
1487 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); | |
1488 | return -1; | |
1489 | } | |
1490 | if (!dso__build_id_equal(self, build_id)) { | |
1491 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], | |
1492 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; | |
1493 | ||
1494 | build_id__sprintf(self->build_id, | |
1495 | sizeof(self->build_id), | |
1496 | expected_build_id); | |
1497 | build_id__sprintf(build_id, sizeof(build_id), | |
1498 | vmlinux_build_id); | |
1499 | pr_debug("build_id in %s is %s while expected is %s, " | |
1500 | "ignoring it\n", vmlinux, vmlinux_build_id, | |
1501 | expected_build_id); | |
1502 | return -1; | |
1503 | } | |
1504 | } | |
66bd8424 | 1505 | |
fbd733b8 | 1506 | fd = open(vmlinux, O_RDONLY); |
a2928c42 ACM |
1507 | if (fd < 0) |
1508 | return -1; | |
1509 | ||
3610583c | 1510 | dso__set_loaded(self, map->type); |
4aa65636 | 1511 | err = dso__load_sym(self, map, session, self->long_name, fd, filter, 1, 0); |
a2928c42 ACM |
1512 | close(fd); |
1513 | ||
1514 | return err; | |
1515 | } | |
1516 | ||
c338aee8 | 1517 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
4aa65636 | 1518 | struct perf_session *session, symbol_filter_t filter) |
a827c875 | 1519 | { |
cc612d81 ACM |
1520 | int err; |
1521 | bool is_kallsyms; | |
1522 | ||
1523 | if (vmlinux_path != NULL) { | |
1524 | int i; | |
1525 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", | |
1526 | vmlinux_path__nr_entries); | |
1527 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { | |
4aa65636 | 1528 | err = dso__load_vmlinux(self, map, session, |
95011c60 | 1529 | vmlinux_path[i], filter); |
cc612d81 ACM |
1530 | if (err > 0) { |
1531 | pr_debug("Using %s for symbols\n", | |
1532 | vmlinux_path[i]); | |
1533 | dso__set_long_name(self, | |
1534 | strdup(vmlinux_path[i])); | |
1535 | goto out_fixup; | |
1536 | } | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | is_kallsyms = self->long_name[0] == '['; | |
1541 | if (is_kallsyms) | |
1542 | goto do_kallsyms; | |
439d473b | 1543 | |
4aa65636 | 1544 | err = dso__load_vmlinux(self, map, session, self->long_name, filter); |
ef6ae724 | 1545 | if (err <= 0) { |
cc612d81 ACM |
1546 | pr_info("The file %s cannot be used, " |
1547 | "trying to use /proc/kallsyms...", self->long_name); | |
cc612d81 | 1548 | do_kallsyms: |
4aa65636 | 1549 | err = dso__load_kallsyms(self, map, session, filter); |
cc612d81 | 1550 | if (err > 0 && !is_kallsyms) |
ef6ae724 ACM |
1551 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
1552 | } | |
439d473b ACM |
1553 | |
1554 | if (err > 0) { | |
cc612d81 | 1555 | out_fixup: |
6a4694a4 ACM |
1556 | map__fixup_start(map); |
1557 | map__fixup_end(map); | |
439d473b | 1558 | } |
94cb9e38 | 1559 | |
a827c875 ACM |
1560 | return err; |
1561 | } | |
1562 | ||
b0da954a ACM |
1563 | LIST_HEAD(dsos__user); |
1564 | LIST_HEAD(dsos__kernel); | |
cc612d81 | 1565 | struct dso *vdso; |
cd84c2ac | 1566 | |
b0da954a | 1567 | static void dsos__add(struct list_head *head, struct dso *dso) |
cd84c2ac | 1568 | { |
b0da954a | 1569 | list_add_tail(&dso->node, head); |
cd84c2ac FW |
1570 | } |
1571 | ||
b0da954a | 1572 | static struct dso *dsos__find(struct list_head *head, const char *name) |
cd84c2ac FW |
1573 | { |
1574 | struct dso *pos; | |
1575 | ||
b0da954a | 1576 | list_for_each_entry(pos, head, node) |
cd84c2ac FW |
1577 | if (strcmp(pos->name, name) == 0) |
1578 | return pos; | |
1579 | return NULL; | |
1580 | } | |
1581 | ||
00a192b3 | 1582 | struct dso *dsos__findnew(const char *name) |
cd84c2ac | 1583 | { |
b0da954a | 1584 | struct dso *dso = dsos__find(&dsos__user, name); |
cd84c2ac | 1585 | |
e4204992 | 1586 | if (!dso) { |
00a192b3 | 1587 | dso = dso__new(name); |
cfc10d3b | 1588 | if (dso != NULL) { |
b0da954a | 1589 | dsos__add(&dsos__user, dso); |
cfc10d3b ACM |
1590 | dso__set_basename(dso); |
1591 | } | |
66bd8424 | 1592 | } |
cd84c2ac FW |
1593 | |
1594 | return dso; | |
cd84c2ac FW |
1595 | } |
1596 | ||
b0da954a | 1597 | static void __dsos__fprintf(struct list_head *head, FILE *fp) |
cd84c2ac FW |
1598 | { |
1599 | struct dso *pos; | |
1600 | ||
95011c60 ACM |
1601 | list_for_each_entry(pos, head, node) { |
1602 | int i; | |
1603 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
1604 | dso__fprintf(pos, i, fp); | |
1605 | } | |
cd84c2ac FW |
1606 | } |
1607 | ||
b0da954a ACM |
1608 | void dsos__fprintf(FILE *fp) |
1609 | { | |
1610 | __dsos__fprintf(&dsos__kernel, fp); | |
1611 | __dsos__fprintf(&dsos__user, fp); | |
1612 | } | |
1613 | ||
1614 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp) | |
9e03eb2d ACM |
1615 | { |
1616 | struct dso *pos; | |
1617 | size_t ret = 0; | |
1618 | ||
b0da954a | 1619 | list_for_each_entry(pos, head, node) { |
9e03eb2d | 1620 | ret += dso__fprintf_buildid(pos, fp); |
1124ba73 | 1621 | ret += fprintf(fp, " %s\n", pos->long_name); |
9e03eb2d ACM |
1622 | } |
1623 | return ret; | |
1624 | } | |
1625 | ||
b0da954a ACM |
1626 | size_t dsos__fprintf_buildid(FILE *fp) |
1627 | { | |
1628 | return (__dsos__fprintf_buildid(&dsos__kernel, fp) + | |
1629 | __dsos__fprintf_buildid(&dsos__user, fp)); | |
1630 | } | |
1631 | ||
f1dfa0b1 | 1632 | static struct dso *dsos__create_kernel( const char *vmlinux) |
cd84c2ac | 1633 | { |
95011c60 | 1634 | struct dso *kernel = dso__new(vmlinux ?: "[kernel.kallsyms]"); |
cd84c2ac | 1635 | |
2446042c | 1636 | if (kernel == NULL) |
f1dfa0b1 | 1637 | return NULL; |
c338aee8 | 1638 | |
4e06255f ACM |
1639 | kernel->short_name = "[kernel]"; |
1640 | kernel->kernel = 1; | |
2446042c | 1641 | |
00a192b3 | 1642 | vdso = dso__new("[vdso]"); |
c338aee8 | 1643 | if (vdso == NULL) |
f1dfa0b1 | 1644 | goto out_delete_kernel_dso; |
3610583c | 1645 | dso__set_loaded(vdso, MAP__FUNCTION); |
2446042c ACM |
1646 | |
1647 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, | |
1648 | sizeof(kernel->build_id)) == 0) | |
1649 | kernel->has_build_id = true; | |
cd84c2ac | 1650 | |
b0da954a ACM |
1651 | dsos__add(&dsos__kernel, kernel); |
1652 | dsos__add(&dsos__user, vdso); | |
cd84c2ac | 1653 | |
f1dfa0b1 | 1654 | return kernel; |
c338aee8 | 1655 | |
c338aee8 ACM |
1656 | out_delete_kernel_dso: |
1657 | dso__delete(kernel); | |
f1dfa0b1 ACM |
1658 | return NULL; |
1659 | } | |
1660 | ||
1661 | static int map_groups__create_kernel_maps(struct map_groups *self, const char *vmlinux) | |
1662 | { | |
1663 | struct map *functions, *variables; | |
1664 | struct dso *kernel = dsos__create_kernel(vmlinux); | |
1665 | ||
1666 | if (kernel == NULL) | |
1667 | return -1; | |
1668 | ||
1669 | functions = map__new2(0, kernel, MAP__FUNCTION); | |
1670 | if (functions == NULL) | |
1671 | return -1; | |
1672 | ||
1673 | variables = map__new2(0, kernel, MAP__VARIABLE); | |
1674 | if (variables == NULL) { | |
1675 | map__delete(functions); | |
1676 | return -1; | |
1677 | } | |
1678 | ||
1679 | functions->map_ip = functions->unmap_ip = | |
1680 | variables->map_ip = variables->unmap_ip = identity__map_ip; | |
1681 | map_groups__insert(self, functions); | |
1682 | map_groups__insert(self, variables); | |
1683 | ||
1684 | return 0; | |
2446042c ACM |
1685 | } |
1686 | ||
cc612d81 ACM |
1687 | static void vmlinux_path__exit(void) |
1688 | { | |
1689 | while (--vmlinux_path__nr_entries >= 0) { | |
1690 | free(vmlinux_path[vmlinux_path__nr_entries]); | |
1691 | vmlinux_path[vmlinux_path__nr_entries] = NULL; | |
1692 | } | |
1693 | ||
1694 | free(vmlinux_path); | |
1695 | vmlinux_path = NULL; | |
1696 | } | |
1697 | ||
1698 | static int vmlinux_path__init(void) | |
1699 | { | |
1700 | struct utsname uts; | |
1701 | char bf[PATH_MAX]; | |
1702 | ||
1703 | if (uname(&uts) < 0) | |
1704 | return -1; | |
1705 | ||
1706 | vmlinux_path = malloc(sizeof(char *) * 5); | |
1707 | if (vmlinux_path == NULL) | |
1708 | return -1; | |
1709 | ||
1710 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); | |
1711 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1712 | goto out_fail; | |
1713 | ++vmlinux_path__nr_entries; | |
1714 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); | |
1715 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1716 | goto out_fail; | |
1717 | ++vmlinux_path__nr_entries; | |
1718 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); | |
1719 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1720 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1721 | goto out_fail; | |
1722 | ++vmlinux_path__nr_entries; | |
1723 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); | |
1724 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1725 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1726 | goto out_fail; | |
1727 | ++vmlinux_path__nr_entries; | |
1728 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", | |
1729 | uts.release); | |
1730 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1731 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1732 | goto out_fail; | |
1733 | ++vmlinux_path__nr_entries; | |
1734 | ||
1735 | return 0; | |
1736 | ||
1737 | out_fail: | |
1738 | vmlinux_path__exit(); | |
1739 | return -1; | |
1740 | } | |
1741 | ||
75be6cf4 | 1742 | int symbol__init(void) |
2446042c | 1743 | { |
95011c60 | 1744 | elf_version(EV_CURRENT); |
75be6cf4 ACM |
1745 | if (symbol_conf.sort_by_name) |
1746 | symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - | |
1747 | sizeof(struct symbol)); | |
b32d133a | 1748 | |
75be6cf4 | 1749 | if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) |
2446042c ACM |
1750 | return -1; |
1751 | ||
4aa65636 ACM |
1752 | return 0; |
1753 | } | |
1754 | ||
75be6cf4 | 1755 | int perf_session__create_kernel_maps(struct perf_session *self) |
4aa65636 | 1756 | { |
4aa65636 | 1757 | if (map_groups__create_kernel_maps(&self->kmaps, |
75be6cf4 | 1758 | symbol_conf.vmlinux_name) < 0) |
cc612d81 | 1759 | return -1; |
cc612d81 | 1760 | |
75be6cf4 ACM |
1761 | if (symbol_conf.use_modules && |
1762 | perf_session__create_module_maps(self) < 0) | |
4aa65636 ACM |
1763 | pr_debug("Failed to load list of modules for session %s, " |
1764 | "continuing...\n", self->filename); | |
90c83218 ACM |
1765 | /* |
1766 | * Now that we have all the maps created, just set the ->end of them: | |
1767 | */ | |
4aa65636 | 1768 | map_groups__fixup_end(&self->kmaps); |
6671cb16 | 1769 | return 0; |
cd84c2ac | 1770 | } |