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Commit | Line | Data |
---|---|---|
a2928c42 ACM |
1 | #include "util.h" |
2 | #include "../perf.h" | |
a0055ae2 | 3 | #include "string.h" |
a2928c42 | 4 | #include "symbol.h" |
439d473b | 5 | #include "thread.h" |
a2928c42 | 6 | |
8f28827a FW |
7 | #include "debug.h" |
8 | ||
b32d133a | 9 | #include <asm/bug.h> |
a2928c42 ACM |
10 | #include <libelf.h> |
11 | #include <gelf.h> | |
12 | #include <elf.h> | |
f1617b40 | 13 | #include <limits.h> |
439d473b | 14 | #include <sys/utsname.h> |
2cdbc46d | 15 | |
c12e15e7 ACM |
16 | #ifndef NT_GNU_BUILD_ID |
17 | #define NT_GNU_BUILD_ID 3 | |
18 | #endif | |
19 | ||
94cb9e38 ACM |
20 | enum dso_origin { |
21 | DSO__ORIG_KERNEL = 0, | |
22 | DSO__ORIG_JAVA_JIT, | |
23 | DSO__ORIG_FEDORA, | |
24 | DSO__ORIG_UBUNTU, | |
25 | DSO__ORIG_BUILDID, | |
26 | DSO__ORIG_DSO, | |
439d473b | 27 | DSO__ORIG_KMODULE, |
94cb9e38 ACM |
28 | DSO__ORIG_NOT_FOUND, |
29 | }; | |
30 | ||
439d473b ACM |
31 | static void dsos__add(struct dso *dso); |
32 | static struct dso *dsos__find(const char *name); | |
2e538c4a ACM |
33 | static struct map *map__new2(u64 start, struct dso *dso); |
34 | static void kernel_maps__insert(struct map *map); | |
c338aee8 ACM |
35 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
36 | symbol_filter_t filter); | |
00a192b3 | 37 | unsigned int symbol__priv_size; |
cc612d81 ACM |
38 | static int vmlinux_path__nr_entries; |
39 | static char **vmlinux_path; | |
439d473b | 40 | |
b32d133a ACM |
41 | static struct symbol_conf symbol_conf__defaults = { |
42 | .use_modules = true, | |
43 | .try_vmlinux_path = true, | |
44 | }; | |
45 | ||
61f37a82 | 46 | static struct rb_root kernel_maps__functions; |
af427bf5 | 47 | |
fcf1203a | 48 | static void symbols__fixup_end(struct rb_root *self) |
af427bf5 | 49 | { |
fcf1203a | 50 | struct rb_node *nd, *prevnd = rb_first(self); |
2e538c4a | 51 | struct symbol *curr, *prev; |
af427bf5 ACM |
52 | |
53 | if (prevnd == NULL) | |
54 | return; | |
55 | ||
2e538c4a ACM |
56 | curr = rb_entry(prevnd, struct symbol, rb_node); |
57 | ||
af427bf5 | 58 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
2e538c4a ACM |
59 | prev = curr; |
60 | curr = rb_entry(nd, struct symbol, rb_node); | |
af427bf5 ACM |
61 | |
62 | if (prev->end == prev->start) | |
63 | prev->end = curr->start - 1; | |
af427bf5 | 64 | } |
2e538c4a ACM |
65 | |
66 | /* Last entry */ | |
67 | if (curr->end == curr->start) | |
68 | curr->end = roundup(curr->start, 4096); | |
af427bf5 ACM |
69 | } |
70 | ||
2e538c4a | 71 | static void kernel_maps__fixup_end(void) |
af427bf5 ACM |
72 | { |
73 | struct map *prev, *curr; | |
61f37a82 | 74 | struct rb_node *nd, *prevnd = rb_first(&kernel_maps__functions); |
af427bf5 ACM |
75 | |
76 | if (prevnd == NULL) | |
77 | return; | |
78 | ||
79 | curr = rb_entry(prevnd, struct map, rb_node); | |
af427bf5 ACM |
80 | |
81 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { | |
82 | prev = curr; | |
83 | curr = rb_entry(nd, struct map, rb_node); | |
84 | prev->end = curr->start - 1; | |
2e538c4a | 85 | } |
90c83218 ACM |
86 | |
87 | /* | |
88 | * We still haven't the actual symbols, so guess the | |
89 | * last map final address. | |
90 | */ | |
91 | curr->end = ~0UL; | |
af427bf5 ACM |
92 | } |
93 | ||
00a192b3 | 94 | static struct symbol *symbol__new(u64 start, u64 len, const char *name) |
a2928c42 | 95 | { |
0085c954 | 96 | size_t namelen = strlen(name) + 1; |
36479484 ACM |
97 | struct symbol *self = zalloc(symbol__priv_size + |
98 | sizeof(*self) + namelen); | |
99 | if (self == NULL) | |
0b73da3f IM |
100 | return NULL; |
101 | ||
36479484 | 102 | if (symbol__priv_size) |
00a192b3 | 103 | self = ((void *)self) + symbol__priv_size; |
36479484 | 104 | |
0b73da3f | 105 | self->start = start; |
6cfcc53e | 106 | self->end = len ? start + len - 1 : start; |
e4204992 | 107 | |
6beba7ad | 108 | pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
e4204992 | 109 | |
0b73da3f | 110 | memcpy(self->name, name, namelen); |
a2928c42 ACM |
111 | |
112 | return self; | |
113 | } | |
114 | ||
00a192b3 | 115 | static void symbol__delete(struct symbol *self) |
a2928c42 | 116 | { |
00a192b3 | 117 | free(((void *)self) - symbol__priv_size); |
a2928c42 ACM |
118 | } |
119 | ||
120 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) | |
121 | { | |
439d473b | 122 | return fprintf(fp, " %llx-%llx %s\n", |
a2928c42 ACM |
123 | self->start, self->end, self->name); |
124 | } | |
125 | ||
cfc10d3b ACM |
126 | static void dso__set_long_name(struct dso *self, char *name) |
127 | { | |
ef6ae724 ACM |
128 | if (name == NULL) |
129 | return; | |
cfc10d3b ACM |
130 | self->long_name = name; |
131 | self->long_name_len = strlen(name); | |
132 | } | |
133 | ||
134 | static void dso__set_basename(struct dso *self) | |
135 | { | |
136 | self->short_name = basename(self->long_name); | |
137 | } | |
138 | ||
00a192b3 | 139 | struct dso *dso__new(const char *name) |
a2928c42 ACM |
140 | { |
141 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); | |
142 | ||
143 | if (self != NULL) { | |
144 | strcpy(self->name, name); | |
cfc10d3b | 145 | dso__set_long_name(self, self->name); |
439d473b | 146 | self->short_name = self->name; |
fcf1203a ACM |
147 | self->functions = RB_ROOT; |
148 | self->find_function = dso__find_function; | |
52d422de | 149 | self->slen_calculated = 0; |
94cb9e38 | 150 | self->origin = DSO__ORIG_NOT_FOUND; |
8d06367f ACM |
151 | self->loaded = 0; |
152 | self->has_build_id = 0; | |
a2928c42 ACM |
153 | } |
154 | ||
155 | return self; | |
156 | } | |
157 | ||
fcf1203a | 158 | static void symbols__delete(struct rb_root *self) |
a2928c42 ACM |
159 | { |
160 | struct symbol *pos; | |
fcf1203a | 161 | struct rb_node *next = rb_first(self); |
a2928c42 ACM |
162 | |
163 | while (next) { | |
164 | pos = rb_entry(next, struct symbol, rb_node); | |
165 | next = rb_next(&pos->rb_node); | |
fcf1203a | 166 | rb_erase(&pos->rb_node, self); |
00a192b3 | 167 | symbol__delete(pos); |
a2928c42 ACM |
168 | } |
169 | } | |
170 | ||
171 | void dso__delete(struct dso *self) | |
172 | { | |
fcf1203a | 173 | symbols__delete(&self->functions); |
439d473b ACM |
174 | if (self->long_name != self->name) |
175 | free(self->long_name); | |
a2928c42 ACM |
176 | free(self); |
177 | } | |
178 | ||
8d06367f ACM |
179 | void dso__set_build_id(struct dso *self, void *build_id) |
180 | { | |
181 | memcpy(self->build_id, build_id, sizeof(self->build_id)); | |
182 | self->has_build_id = 1; | |
183 | } | |
184 | ||
fcf1203a | 185 | static void symbols__insert(struct rb_root *self, struct symbol *sym) |
a2928c42 | 186 | { |
fcf1203a | 187 | struct rb_node **p = &self->rb_node; |
a2928c42 | 188 | struct rb_node *parent = NULL; |
9cffa8d5 | 189 | const u64 ip = sym->start; |
a2928c42 ACM |
190 | struct symbol *s; |
191 | ||
192 | while (*p != NULL) { | |
193 | parent = *p; | |
194 | s = rb_entry(parent, struct symbol, rb_node); | |
195 | if (ip < s->start) | |
196 | p = &(*p)->rb_left; | |
197 | else | |
198 | p = &(*p)->rb_right; | |
199 | } | |
200 | rb_link_node(&sym->rb_node, parent, p); | |
fcf1203a | 201 | rb_insert_color(&sym->rb_node, self); |
a2928c42 ACM |
202 | } |
203 | ||
fcf1203a | 204 | static struct symbol *symbols__find(struct rb_root *self, u64 ip) |
a2928c42 ACM |
205 | { |
206 | struct rb_node *n; | |
207 | ||
208 | if (self == NULL) | |
209 | return NULL; | |
210 | ||
fcf1203a | 211 | n = self->rb_node; |
a2928c42 ACM |
212 | |
213 | while (n) { | |
214 | struct symbol *s = rb_entry(n, struct symbol, rb_node); | |
215 | ||
216 | if (ip < s->start) | |
217 | n = n->rb_left; | |
218 | else if (ip > s->end) | |
219 | n = n->rb_right; | |
220 | else | |
221 | return s; | |
222 | } | |
223 | ||
224 | return NULL; | |
225 | } | |
226 | ||
fcf1203a ACM |
227 | struct symbol *dso__find_function(struct dso *self, u64 ip) |
228 | { | |
229 | return symbols__find(&self->functions, ip); | |
230 | } | |
231 | ||
8d06367f | 232 | int build_id__sprintf(u8 *self, int len, char *bf) |
a2928c42 | 233 | { |
8d06367f ACM |
234 | char *bid = bf; |
235 | u8 *raw = self; | |
236 | int i; | |
a2928c42 | 237 | |
8d06367f ACM |
238 | for (i = 0; i < len; ++i) { |
239 | sprintf(bid, "%02x", *raw); | |
240 | ++raw; | |
241 | bid += 2; | |
242 | } | |
243 | ||
244 | return raw - self; | |
245 | } | |
246 | ||
9e03eb2d | 247 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
8d06367f ACM |
248 | { |
249 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
8d06367f ACM |
250 | |
251 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
9e03eb2d ACM |
252 | return fprintf(fp, "%s", sbuild_id); |
253 | } | |
254 | ||
255 | size_t dso__fprintf(struct dso *self, FILE *fp) | |
256 | { | |
257 | struct rb_node *nd; | |
258 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); | |
259 | ||
260 | ret += dso__fprintf_buildid(self, fp); | |
fcf1203a | 261 | ret += fprintf(fp, ")\nFunctions:\n"); |
8d06367f | 262 | |
fcf1203a | 263 | for (nd = rb_first(&self->functions); nd; nd = rb_next(nd)) { |
a2928c42 ACM |
264 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
265 | ret += symbol__fprintf(pos, fp); | |
266 | } | |
267 | ||
268 | return ret; | |
269 | } | |
270 | ||
2e538c4a ACM |
271 | /* |
272 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, | |
273 | * so that we can in the next step set the symbol ->end address and then | |
274 | * call kernel_maps__split_kallsyms. | |
275 | */ | |
6beba7ad | 276 | static int kernel_maps__load_all_kallsyms(void) |
a2928c42 | 277 | { |
a2928c42 ACM |
278 | char *line = NULL; |
279 | size_t n; | |
280 | FILE *file = fopen("/proc/kallsyms", "r"); | |
281 | ||
282 | if (file == NULL) | |
283 | goto out_failure; | |
284 | ||
285 | while (!feof(file)) { | |
9cffa8d5 | 286 | u64 start; |
a2928c42 ACM |
287 | struct symbol *sym; |
288 | int line_len, len; | |
289 | char symbol_type; | |
2e538c4a | 290 | char *symbol_name; |
a2928c42 ACM |
291 | |
292 | line_len = getline(&line, &n, file); | |
293 | if (line_len < 0) | |
294 | break; | |
295 | ||
296 | if (!line) | |
297 | goto out_failure; | |
298 | ||
299 | line[--line_len] = '\0'; /* \n */ | |
300 | ||
a0055ae2 | 301 | len = hex2u64(line, &start); |
a2928c42 ACM |
302 | |
303 | len++; | |
304 | if (len + 2 >= line_len) | |
305 | continue; | |
306 | ||
307 | symbol_type = toupper(line[len]); | |
308 | /* | |
309 | * We're interested only in code ('T'ext) | |
310 | */ | |
311 | if (symbol_type != 'T' && symbol_type != 'W') | |
312 | continue; | |
af427bf5 ACM |
313 | |
314 | symbol_name = line + len + 2; | |
2e538c4a ACM |
315 | /* |
316 | * Will fix up the end later, when we have all symbols sorted. | |
317 | */ | |
00a192b3 | 318 | sym = symbol__new(start, 0, symbol_name); |
af427bf5 | 319 | |
2e538c4a ACM |
320 | if (sym == NULL) |
321 | goto out_delete_line; | |
322 | ||
82164161 ACM |
323 | /* |
324 | * We will pass the symbols to the filter later, in | |
325 | * kernel_maps__split_kallsyms, when we have split the | |
326 | * maps per module | |
327 | */ | |
61f37a82 | 328 | symbols__insert(&kernel_map__functions->dso->functions, sym); |
2e538c4a ACM |
329 | } |
330 | ||
331 | free(line); | |
332 | fclose(file); | |
333 | ||
334 | return 0; | |
335 | ||
336 | out_delete_line: | |
337 | free(line); | |
338 | out_failure: | |
339 | return -1; | |
340 | } | |
341 | ||
342 | /* | |
343 | * Split the symbols into maps, making sure there are no overlaps, i.e. the | |
344 | * kernel range is broken in several maps, named [kernel].N, as we don't have | |
345 | * the original ELF section names vmlinux have. | |
346 | */ | |
c338aee8 | 347 | static int kernel_maps__split_kallsyms(symbol_filter_t filter) |
2e538c4a | 348 | { |
61f37a82 | 349 | struct map *map = kernel_map__functions; |
2e538c4a ACM |
350 | struct symbol *pos; |
351 | int count = 0; | |
61f37a82 | 352 | struct rb_node *next = rb_first(&kernel_map__functions->dso->functions); |
2e538c4a ACM |
353 | int kernel_range = 0; |
354 | ||
355 | while (next) { | |
356 | char *module; | |
357 | ||
358 | pos = rb_entry(next, struct symbol, rb_node); | |
359 | next = rb_next(&pos->rb_node); | |
360 | ||
361 | module = strchr(pos->name, '\t'); | |
362 | if (module) { | |
2e538c4a ACM |
363 | *module++ = '\0'; |
364 | ||
af427bf5 ACM |
365 | if (strcmp(map->dso->name, module)) { |
366 | map = kernel_maps__find_by_dso_name(module); | |
367 | if (!map) { | |
6beba7ad ACM |
368 | pr_err("/proc/{kallsyms,modules} " |
369 | "inconsistency!\n"); | |
af427bf5 ACM |
370 | return -1; |
371 | } | |
372 | } | |
2e538c4a ACM |
373 | /* |
374 | * So that we look just like we get from .ko files, | |
375 | * i.e. not prelinked, relative to map->start. | |
376 | */ | |
377 | pos->start = map->map_ip(map, pos->start); | |
378 | pos->end = map->map_ip(map, pos->end); | |
61f37a82 | 379 | } else if (map != kernel_map__functions) { |
2e538c4a ACM |
380 | char dso_name[PATH_MAX]; |
381 | struct dso *dso; | |
382 | ||
383 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", | |
384 | kernel_range++); | |
385 | ||
00a192b3 | 386 | dso = dso__new(dso_name); |
2e538c4a ACM |
387 | if (dso == NULL) |
388 | return -1; | |
389 | ||
390 | map = map__new2(pos->start, dso); | |
391 | if (map == NULL) { | |
392 | dso__delete(dso); | |
393 | return -1; | |
394 | } | |
a2928c42 | 395 | |
ed52ce2e | 396 | map->map_ip = map->unmap_ip = identity__map_ip; |
2e538c4a ACM |
397 | kernel_maps__insert(map); |
398 | ++kernel_range; | |
399 | } | |
a2928c42 | 400 | |
2e538c4a | 401 | if (filter && filter(map, pos)) { |
61f37a82 | 402 | rb_erase(&pos->rb_node, &kernel_map__functions->dso->functions); |
00a192b3 | 403 | symbol__delete(pos); |
2e538c4a | 404 | } else { |
61f37a82 | 405 | if (map != kernel_map__functions) { |
fcf1203a | 406 | rb_erase(&pos->rb_node, |
61f37a82 | 407 | &kernel_map__functions->dso->functions); |
fcf1203a | 408 | symbols__insert(&map->dso->functions, pos); |
2e538c4a | 409 | } |
9974f496 MG |
410 | count++; |
411 | } | |
a2928c42 ACM |
412 | } |
413 | ||
9974f496 | 414 | return count; |
2e538c4a | 415 | } |
a2928c42 | 416 | |
2e538c4a | 417 | |
c338aee8 | 418 | static int kernel_maps__load_kallsyms(symbol_filter_t filter) |
2e538c4a | 419 | { |
6beba7ad | 420 | if (kernel_maps__load_all_kallsyms()) |
2e538c4a ACM |
421 | return -1; |
422 | ||
61f37a82 ACM |
423 | symbols__fixup_end(&kernel_map__functions->dso->functions); |
424 | kernel_map__functions->dso->origin = DSO__ORIG_KERNEL; | |
2e538c4a | 425 | |
c338aee8 | 426 | return kernel_maps__split_kallsyms(filter); |
a2928c42 ACM |
427 | } |
428 | ||
c338aee8 | 429 | size_t kernel_maps__fprintf(FILE *fp) |
af427bf5 | 430 | { |
6beba7ad | 431 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
af427bf5 ACM |
432 | struct rb_node *nd; |
433 | ||
61f37a82 | 434 | for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) { |
af427bf5 ACM |
435 | struct map *pos = rb_entry(nd, struct map, rb_node); |
436 | ||
2e538c4a | 437 | printed += fprintf(fp, "Map:"); |
af427bf5 | 438 | printed += map__fprintf(pos, fp); |
6beba7ad | 439 | if (verbose > 1) { |
2e538c4a ACM |
440 | printed += dso__fprintf(pos->dso, fp); |
441 | printed += fprintf(fp, "--\n"); | |
442 | } | |
af427bf5 ACM |
443 | } |
444 | ||
6beba7ad | 445 | return printed + fprintf(fp, "END kernel maps\n"); |
af427bf5 ACM |
446 | } |
447 | ||
439d473b | 448 | static int dso__load_perf_map(struct dso *self, struct map *map, |
6beba7ad | 449 | symbol_filter_t filter) |
80d496be PE |
450 | { |
451 | char *line = NULL; | |
452 | size_t n; | |
453 | FILE *file; | |
454 | int nr_syms = 0; | |
455 | ||
439d473b | 456 | file = fopen(self->long_name, "r"); |
80d496be PE |
457 | if (file == NULL) |
458 | goto out_failure; | |
459 | ||
460 | while (!feof(file)) { | |
9cffa8d5 | 461 | u64 start, size; |
80d496be PE |
462 | struct symbol *sym; |
463 | int line_len, len; | |
464 | ||
465 | line_len = getline(&line, &n, file); | |
466 | if (line_len < 0) | |
467 | break; | |
468 | ||
469 | if (!line) | |
470 | goto out_failure; | |
471 | ||
472 | line[--line_len] = '\0'; /* \n */ | |
473 | ||
474 | len = hex2u64(line, &start); | |
475 | ||
476 | len++; | |
477 | if (len + 2 >= line_len) | |
478 | continue; | |
479 | ||
480 | len += hex2u64(line + len, &size); | |
481 | ||
482 | len++; | |
483 | if (len + 2 >= line_len) | |
484 | continue; | |
485 | ||
00a192b3 | 486 | sym = symbol__new(start, size, line + len); |
80d496be PE |
487 | |
488 | if (sym == NULL) | |
489 | goto out_delete_line; | |
490 | ||
439d473b | 491 | if (filter && filter(map, sym)) |
00a192b3 | 492 | symbol__delete(sym); |
80d496be | 493 | else { |
fcf1203a | 494 | symbols__insert(&self->functions, sym); |
80d496be PE |
495 | nr_syms++; |
496 | } | |
497 | } | |
498 | ||
499 | free(line); | |
500 | fclose(file); | |
501 | ||
502 | return nr_syms; | |
503 | ||
504 | out_delete_line: | |
505 | free(line); | |
506 | out_failure: | |
507 | return -1; | |
508 | } | |
509 | ||
a2928c42 ACM |
510 | /** |
511 | * elf_symtab__for_each_symbol - iterate thru all the symbols | |
512 | * | |
513 | * @self: struct elf_symtab instance to iterate | |
83a0944f | 514 | * @idx: uint32_t idx |
a2928c42 ACM |
515 | * @sym: GElf_Sym iterator |
516 | */ | |
83a0944f IM |
517 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
518 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ | |
519 | idx < nr_syms; \ | |
520 | idx++, gelf_getsym(syms, idx, &sym)) | |
a2928c42 ACM |
521 | |
522 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) | |
523 | { | |
524 | return GELF_ST_TYPE(sym->st_info); | |
525 | } | |
526 | ||
527 | static inline int elf_sym__is_function(const GElf_Sym *sym) | |
528 | { | |
529 | return elf_sym__type(sym) == STT_FUNC && | |
530 | sym->st_name != 0 && | |
81833130 | 531 | sym->st_shndx != SHN_UNDEF; |
a2928c42 ACM |
532 | } |
533 | ||
6cfcc53e MG |
534 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
535 | { | |
536 | return elf_sym__type(sym) == STT_NOTYPE && | |
537 | sym->st_name != 0 && | |
538 | sym->st_shndx != SHN_UNDEF && | |
539 | sym->st_shndx != SHN_ABS; | |
540 | } | |
541 | ||
542 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, | |
543 | const Elf_Data *secstrs) | |
544 | { | |
545 | return secstrs->d_buf + shdr->sh_name; | |
546 | } | |
547 | ||
548 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, | |
549 | const Elf_Data *secstrs) | |
550 | { | |
551 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; | |
552 | } | |
553 | ||
a2928c42 ACM |
554 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
555 | const Elf_Data *symstrs) | |
556 | { | |
557 | return symstrs->d_buf + sym->st_name; | |
558 | } | |
559 | ||
560 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, | |
561 | GElf_Shdr *shp, const char *name, | |
83a0944f | 562 | size_t *idx) |
a2928c42 ACM |
563 | { |
564 | Elf_Scn *sec = NULL; | |
565 | size_t cnt = 1; | |
566 | ||
567 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
568 | char *str; | |
569 | ||
570 | gelf_getshdr(sec, shp); | |
571 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); | |
572 | if (!strcmp(name, str)) { | |
83a0944f IM |
573 | if (idx) |
574 | *idx = cnt; | |
a2928c42 ACM |
575 | break; |
576 | } | |
577 | ++cnt; | |
578 | } | |
579 | ||
580 | return sec; | |
581 | } | |
582 | ||
8ce998d6 ACM |
583 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
584 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ | |
585 | idx < nr_entries; \ | |
586 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) | |
587 | ||
588 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ | |
589 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ | |
590 | idx < nr_entries; \ | |
591 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) | |
592 | ||
a25e46c4 ACM |
593 | /* |
594 | * We need to check if we have a .dynsym, so that we can handle the | |
595 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it | |
596 | * .dynsym or .symtab). | |
597 | * And always look at the original dso, not at debuginfo packages, that | |
598 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). | |
599 | */ | |
82164161 ACM |
600 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
601 | symbol_filter_t filter) | |
8ce998d6 ACM |
602 | { |
603 | uint32_t nr_rel_entries, idx; | |
604 | GElf_Sym sym; | |
9cffa8d5 | 605 | u64 plt_offset; |
8ce998d6 ACM |
606 | GElf_Shdr shdr_plt; |
607 | struct symbol *f; | |
a25e46c4 | 608 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
8ce998d6 | 609 | Elf_Data *reldata, *syms, *symstrs; |
a25e46c4 ACM |
610 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
611 | size_t dynsym_idx; | |
612 | GElf_Ehdr ehdr; | |
8ce998d6 | 613 | char sympltname[1024]; |
a25e46c4 ACM |
614 | Elf *elf; |
615 | int nr = 0, symidx, fd, err = 0; | |
616 | ||
439d473b | 617 | fd = open(self->long_name, O_RDONLY); |
a25e46c4 ACM |
618 | if (fd < 0) |
619 | goto out; | |
620 | ||
84087126 | 621 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a25e46c4 ACM |
622 | if (elf == NULL) |
623 | goto out_close; | |
624 | ||
625 | if (gelf_getehdr(elf, &ehdr) == NULL) | |
626 | goto out_elf_end; | |
627 | ||
628 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, | |
629 | ".dynsym", &dynsym_idx); | |
630 | if (scn_dynsym == NULL) | |
631 | goto out_elf_end; | |
8ce998d6 | 632 | |
a25e46c4 | 633 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
634 | ".rela.plt", NULL); |
635 | if (scn_plt_rel == NULL) { | |
a25e46c4 | 636 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
637 | ".rel.plt", NULL); |
638 | if (scn_plt_rel == NULL) | |
a25e46c4 | 639 | goto out_elf_end; |
8ce998d6 ACM |
640 | } |
641 | ||
a25e46c4 ACM |
642 | err = -1; |
643 | ||
8ce998d6 | 644 | if (shdr_rel_plt.sh_link != dynsym_idx) |
a25e46c4 | 645 | goto out_elf_end; |
8ce998d6 | 646 | |
a25e46c4 ACM |
647 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
648 | goto out_elf_end; | |
8ce998d6 ACM |
649 | |
650 | /* | |
83a0944f | 651 | * Fetch the relocation section to find the idxes to the GOT |
8ce998d6 ACM |
652 | * and the symbols in the .dynsym they refer to. |
653 | */ | |
654 | reldata = elf_getdata(scn_plt_rel, NULL); | |
655 | if (reldata == NULL) | |
a25e46c4 | 656 | goto out_elf_end; |
8ce998d6 ACM |
657 | |
658 | syms = elf_getdata(scn_dynsym, NULL); | |
659 | if (syms == NULL) | |
a25e46c4 | 660 | goto out_elf_end; |
8ce998d6 | 661 | |
a25e46c4 | 662 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
8ce998d6 | 663 | if (scn_symstrs == NULL) |
a25e46c4 | 664 | goto out_elf_end; |
8ce998d6 ACM |
665 | |
666 | symstrs = elf_getdata(scn_symstrs, NULL); | |
667 | if (symstrs == NULL) | |
a25e46c4 | 668 | goto out_elf_end; |
8ce998d6 ACM |
669 | |
670 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; | |
671 | plt_offset = shdr_plt.sh_offset; | |
672 | ||
673 | if (shdr_rel_plt.sh_type == SHT_RELA) { | |
674 | GElf_Rela pos_mem, *pos; | |
675 | ||
676 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, | |
677 | nr_rel_entries) { | |
678 | symidx = GELF_R_SYM(pos->r_info); | |
679 | plt_offset += shdr_plt.sh_entsize; | |
680 | gelf_getsym(syms, symidx, &sym); | |
681 | snprintf(sympltname, sizeof(sympltname), | |
682 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
683 | ||
684 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 685 | sympltname); |
8ce998d6 | 686 | if (!f) |
a25e46c4 | 687 | goto out_elf_end; |
8ce998d6 | 688 | |
82164161 ACM |
689 | if (filter && filter(map, f)) |
690 | symbol__delete(f); | |
691 | else { | |
fcf1203a | 692 | symbols__insert(&self->functions, f); |
82164161 ACM |
693 | ++nr; |
694 | } | |
8ce998d6 ACM |
695 | } |
696 | } else if (shdr_rel_plt.sh_type == SHT_REL) { | |
697 | GElf_Rel pos_mem, *pos; | |
698 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, | |
699 | nr_rel_entries) { | |
700 | symidx = GELF_R_SYM(pos->r_info); | |
701 | plt_offset += shdr_plt.sh_entsize; | |
702 | gelf_getsym(syms, symidx, &sym); | |
703 | snprintf(sympltname, sizeof(sympltname), | |
704 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
705 | ||
706 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 707 | sympltname); |
8ce998d6 | 708 | if (!f) |
a25e46c4 | 709 | goto out_elf_end; |
8ce998d6 | 710 | |
82164161 ACM |
711 | if (filter && filter(map, f)) |
712 | symbol__delete(f); | |
713 | else { | |
fcf1203a | 714 | symbols__insert(&self->functions, f); |
82164161 ACM |
715 | ++nr; |
716 | } | |
8ce998d6 | 717 | } |
8ce998d6 ACM |
718 | } |
719 | ||
a25e46c4 ACM |
720 | err = 0; |
721 | out_elf_end: | |
722 | elf_end(elf); | |
723 | out_close: | |
724 | close(fd); | |
725 | ||
726 | if (err == 0) | |
727 | return nr; | |
728 | out: | |
6beba7ad ACM |
729 | pr_warning("%s: problems reading %s PLT info.\n", |
730 | __func__, self->long_name); | |
a25e46c4 | 731 | return 0; |
8ce998d6 ACM |
732 | } |
733 | ||
439d473b ACM |
734 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
735 | int fd, symbol_filter_t filter, int kernel, | |
6beba7ad | 736 | int kmodule) |
a2928c42 | 737 | { |
2e538c4a ACM |
738 | struct map *curr_map = map; |
739 | struct dso *curr_dso = self; | |
740 | size_t dso_name_len = strlen(self->short_name); | |
6cfcc53e | 741 | Elf_Data *symstrs, *secstrs; |
a2928c42 ACM |
742 | uint32_t nr_syms; |
743 | int err = -1; | |
83a0944f | 744 | uint32_t idx; |
a2928c42 ACM |
745 | GElf_Ehdr ehdr; |
746 | GElf_Shdr shdr; | |
747 | Elf_Data *syms; | |
748 | GElf_Sym sym; | |
a25e46c4 | 749 | Elf_Scn *sec, *sec_strndx; |
a2928c42 | 750 | Elf *elf; |
439d473b | 751 | int nr = 0; |
a2928c42 | 752 | |
84087126 | 753 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a2928c42 | 754 | if (elf == NULL) { |
6beba7ad | 755 | pr_err("%s: cannot read %s ELF file.\n", __func__, name); |
a2928c42 ACM |
756 | goto out_close; |
757 | } | |
758 | ||
759 | if (gelf_getehdr(elf, &ehdr) == NULL) { | |
6beba7ad | 760 | pr_err("%s: cannot get elf header.\n", __func__); |
a2928c42 ACM |
761 | goto out_elf_end; |
762 | } | |
763 | ||
764 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); | |
8ce998d6 | 765 | if (sec == NULL) { |
a25e46c4 ACM |
766 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
767 | if (sec == NULL) | |
8ce998d6 | 768 | goto out_elf_end; |
8ce998d6 | 769 | } |
a2928c42 ACM |
770 | |
771 | syms = elf_getdata(sec, NULL); | |
772 | if (syms == NULL) | |
773 | goto out_elf_end; | |
774 | ||
775 | sec = elf_getscn(elf, shdr.sh_link); | |
776 | if (sec == NULL) | |
777 | goto out_elf_end; | |
778 | ||
779 | symstrs = elf_getdata(sec, NULL); | |
780 | if (symstrs == NULL) | |
781 | goto out_elf_end; | |
782 | ||
6cfcc53e MG |
783 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
784 | if (sec_strndx == NULL) | |
785 | goto out_elf_end; | |
786 | ||
787 | secstrs = elf_getdata(sec_strndx, NULL); | |
9b30a26b | 788 | if (secstrs == NULL) |
6cfcc53e MG |
789 | goto out_elf_end; |
790 | ||
a2928c42 ACM |
791 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
792 | ||
e9fbc9dc | 793 | memset(&sym, 0, sizeof(sym)); |
d20ff6bd MG |
794 | if (!kernel) { |
795 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || | |
30d7a77d ACM |
796 | elf_section_by_name(elf, &ehdr, &shdr, |
797 | ".gnu.prelink_undo", | |
798 | NULL) != NULL); | |
d20ff6bd MG |
799 | } else self->adjust_symbols = 0; |
800 | ||
83a0944f | 801 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
a2928c42 | 802 | struct symbol *f; |
83a0944f | 803 | const char *elf_name; |
2e538c4a | 804 | char *demangled = NULL; |
6cfcc53e MG |
805 | int is_label = elf_sym__is_label(&sym); |
806 | const char *section_name; | |
a2928c42 | 807 | |
6cfcc53e | 808 | if (!is_label && !elf_sym__is_function(&sym)) |
a2928c42 ACM |
809 | continue; |
810 | ||
811 | sec = elf_getscn(elf, sym.st_shndx); | |
812 | if (!sec) | |
813 | goto out_elf_end; | |
814 | ||
815 | gelf_getshdr(sec, &shdr); | |
6cfcc53e MG |
816 | |
817 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) | |
818 | continue; | |
819 | ||
2e538c4a | 820 | elf_name = elf_sym__name(&sym, symstrs); |
6cfcc53e | 821 | section_name = elf_sec__name(&shdr, secstrs); |
0b73da3f | 822 | |
2e538c4a ACM |
823 | if (kernel || kmodule) { |
824 | char dso_name[PATH_MAX]; | |
825 | ||
826 | if (strcmp(section_name, | |
827 | curr_dso->short_name + dso_name_len) == 0) | |
828 | goto new_symbol; | |
829 | ||
830 | if (strcmp(section_name, ".text") == 0) { | |
831 | curr_map = map; | |
832 | curr_dso = self; | |
833 | goto new_symbol; | |
834 | } | |
835 | ||
836 | snprintf(dso_name, sizeof(dso_name), | |
837 | "%s%s", self->short_name, section_name); | |
838 | ||
839 | curr_map = kernel_maps__find_by_dso_name(dso_name); | |
840 | if (curr_map == NULL) { | |
841 | u64 start = sym.st_value; | |
842 | ||
843 | if (kmodule) | |
844 | start += map->start + shdr.sh_offset; | |
845 | ||
00a192b3 | 846 | curr_dso = dso__new(dso_name); |
2e538c4a ACM |
847 | if (curr_dso == NULL) |
848 | goto out_elf_end; | |
849 | curr_map = map__new2(start, curr_dso); | |
850 | if (curr_map == NULL) { | |
851 | dso__delete(curr_dso); | |
852 | goto out_elf_end; | |
853 | } | |
ed52ce2e ACM |
854 | curr_map->map_ip = identity__map_ip; |
855 | curr_map->unmap_ip = identity__map_ip; | |
2e538c4a ACM |
856 | curr_dso->origin = DSO__ORIG_KERNEL; |
857 | kernel_maps__insert(curr_map); | |
858 | dsos__add(curr_dso); | |
859 | } else | |
860 | curr_dso = curr_map->dso; | |
861 | ||
862 | goto new_symbol; | |
af427bf5 ACM |
863 | } |
864 | ||
2e538c4a | 865 | if (curr_dso->adjust_symbols) { |
6beba7ad ACM |
866 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
867 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, | |
868 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); | |
f5812a7a | 869 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
af427bf5 | 870 | } |
28ac909b ACM |
871 | /* |
872 | * We need to figure out if the object was created from C++ sources | |
873 | * DWARF DW_compile_unit has this, but we don't always have access | |
874 | * to it... | |
875 | */ | |
83a0944f | 876 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
28ac909b | 877 | if (demangled != NULL) |
83a0944f | 878 | elf_name = demangled; |
2e538c4a | 879 | new_symbol: |
00a192b3 | 880 | f = symbol__new(sym.st_value, sym.st_size, elf_name); |
28ac909b | 881 | free(demangled); |
a2928c42 ACM |
882 | if (!f) |
883 | goto out_elf_end; | |
884 | ||
2e538c4a | 885 | if (filter && filter(curr_map, f)) |
00a192b3 | 886 | symbol__delete(f); |
69ee69f6 | 887 | else { |
fcf1203a | 888 | symbols__insert(&curr_dso->functions, f); |
69ee69f6 ACM |
889 | nr++; |
890 | } | |
a2928c42 ACM |
891 | } |
892 | ||
2e538c4a ACM |
893 | /* |
894 | * For misannotated, zeroed, ASM function sizes. | |
895 | */ | |
896 | if (nr > 0) | |
fcf1203a | 897 | symbols__fixup_end(&self->functions); |
a2928c42 ACM |
898 | err = nr; |
899 | out_elf_end: | |
900 | elf_end(elf); | |
901 | out_close: | |
902 | return err; | |
903 | } | |
904 | ||
78075caa ACM |
905 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
906 | { | |
907 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; | |
908 | } | |
909 | ||
e30a3d12 | 910 | bool dsos__read_build_ids(void) |
57f395a7 | 911 | { |
e30a3d12 | 912 | bool have_build_id = false; |
57f395a7 FW |
913 | struct dso *pos; |
914 | ||
e30a3d12 ACM |
915 | list_for_each_entry(pos, &dsos, node) |
916 | if (filename__read_build_id(pos->long_name, pos->build_id, | |
917 | sizeof(pos->build_id)) > 0) { | |
918 | have_build_id = true; | |
919 | pos->has_build_id = true; | |
920 | } | |
57f395a7 | 921 | |
e30a3d12 | 922 | return have_build_id; |
57f395a7 FW |
923 | } |
924 | ||
fd7a346e ACM |
925 | /* |
926 | * Align offset to 4 bytes as needed for note name and descriptor data. | |
927 | */ | |
928 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) | |
929 | ||
2643ce11 | 930 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
4d1e00a8 | 931 | { |
2643ce11 | 932 | int fd, err = -1; |
4d1e00a8 ACM |
933 | GElf_Ehdr ehdr; |
934 | GElf_Shdr shdr; | |
fd7a346e | 935 | Elf_Data *data; |
4d1e00a8 | 936 | Elf_Scn *sec; |
e57cfcda | 937 | Elf_Kind ek; |
fd7a346e | 938 | void *ptr; |
4d1e00a8 | 939 | Elf *elf; |
4d1e00a8 | 940 | |
2643ce11 ACM |
941 | if (size < BUILD_ID_SIZE) |
942 | goto out; | |
943 | ||
944 | fd = open(filename, O_RDONLY); | |
4d1e00a8 ACM |
945 | if (fd < 0) |
946 | goto out; | |
947 | ||
84087126 | 948 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
4d1e00a8 | 949 | if (elf == NULL) { |
8d06367f | 950 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
4d1e00a8 ACM |
951 | goto out_close; |
952 | } | |
953 | ||
e57cfcda PE |
954 | ek = elf_kind(elf); |
955 | if (ek != ELF_K_ELF) | |
956 | goto out_elf_end; | |
957 | ||
4d1e00a8 | 958 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
6beba7ad | 959 | pr_err("%s: cannot get elf header.\n", __func__); |
4d1e00a8 ACM |
960 | goto out_elf_end; |
961 | } | |
962 | ||
2643ce11 ACM |
963 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
964 | ".note.gnu.build-id", NULL); | |
fd7a346e ACM |
965 | if (sec == NULL) { |
966 | sec = elf_section_by_name(elf, &ehdr, &shdr, | |
967 | ".notes", NULL); | |
968 | if (sec == NULL) | |
969 | goto out_elf_end; | |
970 | } | |
4d1e00a8 | 971 | |
fd7a346e ACM |
972 | data = elf_getdata(sec, NULL); |
973 | if (data == NULL) | |
4d1e00a8 | 974 | goto out_elf_end; |
fd7a346e ACM |
975 | |
976 | ptr = data->d_buf; | |
977 | while (ptr < (data->d_buf + data->d_size)) { | |
978 | GElf_Nhdr *nhdr = ptr; | |
979 | int namesz = NOTE_ALIGN(nhdr->n_namesz), | |
980 | descsz = NOTE_ALIGN(nhdr->n_descsz); | |
981 | const char *name; | |
982 | ||
983 | ptr += sizeof(*nhdr); | |
984 | name = ptr; | |
985 | ptr += namesz; | |
986 | if (nhdr->n_type == NT_GNU_BUILD_ID && | |
987 | nhdr->n_namesz == sizeof("GNU")) { | |
988 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { | |
989 | memcpy(bf, ptr, BUILD_ID_SIZE); | |
990 | err = BUILD_ID_SIZE; | |
991 | break; | |
992 | } | |
993 | } | |
994 | ptr += descsz; | |
995 | } | |
2643ce11 ACM |
996 | out_elf_end: |
997 | elf_end(elf); | |
998 | out_close: | |
999 | close(fd); | |
1000 | out: | |
1001 | return err; | |
1002 | } | |
1003 | ||
f1617b40 ACM |
1004 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
1005 | { | |
1006 | int fd, err = -1; | |
1007 | ||
1008 | if (size < BUILD_ID_SIZE) | |
1009 | goto out; | |
1010 | ||
1011 | fd = open(filename, O_RDONLY); | |
1012 | if (fd < 0) | |
1013 | goto out; | |
1014 | ||
1015 | while (1) { | |
1016 | char bf[BUFSIZ]; | |
1017 | GElf_Nhdr nhdr; | |
1018 | int namesz, descsz; | |
1019 | ||
1020 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) | |
1021 | break; | |
1022 | ||
fd7a346e ACM |
1023 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
1024 | descsz = NOTE_ALIGN(nhdr.n_descsz); | |
f1617b40 ACM |
1025 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
1026 | nhdr.n_namesz == sizeof("GNU")) { | |
1027 | if (read(fd, bf, namesz) != namesz) | |
1028 | break; | |
1029 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { | |
1030 | if (read(fd, build_id, | |
1031 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { | |
1032 | err = 0; | |
1033 | break; | |
1034 | } | |
1035 | } else if (read(fd, bf, descsz) != descsz) | |
1036 | break; | |
1037 | } else { | |
1038 | int n = namesz + descsz; | |
1039 | if (read(fd, bf, n) != n) | |
1040 | break; | |
1041 | } | |
1042 | } | |
1043 | close(fd); | |
1044 | out: | |
1045 | return err; | |
1046 | } | |
1047 | ||
94cb9e38 ACM |
1048 | char dso__symtab_origin(const struct dso *self) |
1049 | { | |
1050 | static const char origin[] = { | |
1051 | [DSO__ORIG_KERNEL] = 'k', | |
1052 | [DSO__ORIG_JAVA_JIT] = 'j', | |
1053 | [DSO__ORIG_FEDORA] = 'f', | |
1054 | [DSO__ORIG_UBUNTU] = 'u', | |
1055 | [DSO__ORIG_BUILDID] = 'b', | |
1056 | [DSO__ORIG_DSO] = 'd', | |
439d473b | 1057 | [DSO__ORIG_KMODULE] = 'K', |
94cb9e38 ACM |
1058 | }; |
1059 | ||
1060 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) | |
1061 | return '!'; | |
1062 | return origin[self->origin]; | |
1063 | } | |
1064 | ||
6beba7ad | 1065 | int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) |
a2928c42 | 1066 | { |
4d1e00a8 | 1067 | int size = PATH_MAX; |
c338aee8 | 1068 | char *name; |
d3379ab9 | 1069 | u8 build_id[BUILD_ID_SIZE]; |
a2928c42 ACM |
1070 | int ret = -1; |
1071 | int fd; | |
1072 | ||
8d06367f | 1073 | self->loaded = 1; |
66bd8424 | 1074 | |
c338aee8 ACM |
1075 | if (self->kernel) |
1076 | return dso__load_kernel_sym(self, map, filter); | |
1077 | ||
1078 | name = malloc(size); | |
a2928c42 ACM |
1079 | if (!name) |
1080 | return -1; | |
1081 | ||
30d7a77d | 1082 | self->adjust_symbols = 0; |
f5812a7a | 1083 | |
94cb9e38 | 1084 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
6beba7ad | 1085 | ret = dso__load_perf_map(self, map, filter); |
94cb9e38 ACM |
1086 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
1087 | DSO__ORIG_NOT_FOUND; | |
1088 | return ret; | |
1089 | } | |
1090 | ||
1091 | self->origin = DSO__ORIG_FEDORA - 1; | |
80d496be | 1092 | |
a2928c42 ACM |
1093 | more: |
1094 | do { | |
94cb9e38 ACM |
1095 | self->origin++; |
1096 | switch (self->origin) { | |
1097 | case DSO__ORIG_FEDORA: | |
439d473b ACM |
1098 | snprintf(name, size, "/usr/lib/debug%s.debug", |
1099 | self->long_name); | |
a2928c42 | 1100 | break; |
94cb9e38 | 1101 | case DSO__ORIG_UBUNTU: |
439d473b ACM |
1102 | snprintf(name, size, "/usr/lib/debug%s", |
1103 | self->long_name); | |
a2928c42 | 1104 | break; |
94cb9e38 | 1105 | case DSO__ORIG_BUILDID: |
d3379ab9 ACM |
1106 | if (filename__read_build_id(self->long_name, build_id, |
1107 | sizeof(build_id))) { | |
1108 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; | |
1109 | ||
1110 | build_id__sprintf(build_id, sizeof(build_id), | |
1111 | build_id_hex); | |
4d1e00a8 ACM |
1112 | snprintf(name, size, |
1113 | "/usr/lib/debug/.build-id/%.2s/%s.debug", | |
d3379ab9 ACM |
1114 | build_id_hex, build_id_hex + 2); |
1115 | if (self->has_build_id) | |
1116 | goto compare_build_id; | |
1117 | break; | |
4d1e00a8 | 1118 | } |
94cb9e38 | 1119 | self->origin++; |
4d1e00a8 | 1120 | /* Fall thru */ |
94cb9e38 | 1121 | case DSO__ORIG_DSO: |
439d473b | 1122 | snprintf(name, size, "%s", self->long_name); |
a2928c42 ACM |
1123 | break; |
1124 | ||
1125 | default: | |
1126 | goto out; | |
1127 | } | |
a2928c42 | 1128 | |
8d06367f | 1129 | if (self->has_build_id) { |
d3379ab9 ACM |
1130 | if (filename__read_build_id(name, build_id, |
1131 | sizeof(build_id)) < 0) | |
8d06367f | 1132 | goto more; |
8d06367f | 1133 | compare_build_id: |
78075caa | 1134 | if (!dso__build_id_equal(self, build_id)) |
8d06367f ACM |
1135 | goto more; |
1136 | } | |
1137 | ||
a2928c42 ACM |
1138 | fd = open(name, O_RDONLY); |
1139 | } while (fd < 0); | |
1140 | ||
6beba7ad | 1141 | ret = dso__load_sym(self, map, name, fd, filter, 0, 0); |
a2928c42 ACM |
1142 | close(fd); |
1143 | ||
1144 | /* | |
1145 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? | |
1146 | */ | |
1147 | if (!ret) | |
1148 | goto more; | |
1149 | ||
a25e46c4 | 1150 | if (ret > 0) { |
82164161 | 1151 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
a25e46c4 ACM |
1152 | if (nr_plt > 0) |
1153 | ret += nr_plt; | |
1154 | } | |
a2928c42 ACM |
1155 | out: |
1156 | free(name); | |
1340e6bb ACM |
1157 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
1158 | return 0; | |
a2928c42 ACM |
1159 | return ret; |
1160 | } | |
1161 | ||
61f37a82 | 1162 | struct map *kernel_map__functions; |
439d473b ACM |
1163 | |
1164 | static void kernel_maps__insert(struct map *map) | |
6cfcc53e | 1165 | { |
61f37a82 | 1166 | maps__insert(&kernel_maps__functions, map); |
439d473b | 1167 | } |
6cfcc53e | 1168 | |
fcf1203a ACM |
1169 | struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp, |
1170 | symbol_filter_t filter) | |
439d473b | 1171 | { |
61f37a82 | 1172 | struct map *map = maps__find(&kernel_maps__functions, ip); |
2e538c4a ACM |
1173 | |
1174 | if (mapp) | |
1175 | *mapp = map; | |
439d473b ACM |
1176 | |
1177 | if (map) { | |
1178 | ip = map->map_ip(map, ip); | |
fcf1203a | 1179 | return map__find_function(map, ip, filter); |
b32d133a | 1180 | } else |
61f37a82 | 1181 | WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps__functions), |
b32d133a | 1182 | "Empty kernel_maps, was symbol__init() called?\n"); |
6cfcc53e | 1183 | |
2e538c4a | 1184 | return NULL; |
439d473b ACM |
1185 | } |
1186 | ||
1187 | struct map *kernel_maps__find_by_dso_name(const char *name) | |
1188 | { | |
1189 | struct rb_node *nd; | |
1190 | ||
61f37a82 | 1191 | for (nd = rb_first(&kernel_maps__functions); nd; nd = rb_next(nd)) { |
439d473b ACM |
1192 | struct map *map = rb_entry(nd, struct map, rb_node); |
1193 | ||
1194 | if (map->dso && strcmp(map->dso->name, name) == 0) | |
1195 | return map; | |
1196 | } | |
1197 | ||
1198 | return NULL; | |
1199 | } | |
1200 | ||
c338aee8 | 1201 | static int dsos__set_modules_path_dir(char *dirname) |
6cfcc53e | 1202 | { |
439d473b | 1203 | struct dirent *dent; |
439d473b | 1204 | DIR *dir = opendir(dirname); |
6cfcc53e | 1205 | |
439d473b | 1206 | if (!dir) { |
87f8ea4c | 1207 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
439d473b ACM |
1208 | return -1; |
1209 | } | |
6cfcc53e | 1210 | |
439d473b ACM |
1211 | while ((dent = readdir(dir)) != NULL) { |
1212 | char path[PATH_MAX]; | |
1213 | ||
1214 | if (dent->d_type == DT_DIR) { | |
1215 | if (!strcmp(dent->d_name, ".") || | |
1216 | !strcmp(dent->d_name, "..")) | |
1217 | continue; | |
1218 | ||
1219 | snprintf(path, sizeof(path), "%s/%s", | |
1220 | dirname, dent->d_name); | |
c338aee8 | 1221 | if (dsos__set_modules_path_dir(path) < 0) |
439d473b ACM |
1222 | goto failure; |
1223 | } else { | |
1224 | char *dot = strrchr(dent->d_name, '.'), | |
1225 | dso_name[PATH_MAX]; | |
1226 | struct map *map; | |
cfc10d3b | 1227 | char *long_name; |
439d473b ACM |
1228 | |
1229 | if (dot == NULL || strcmp(dot, ".ko")) | |
1230 | continue; | |
1231 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
1232 | (int)(dot - dent->d_name), dent->d_name); | |
1233 | ||
a2a99e8e | 1234 | strxfrchar(dso_name, '-', '_'); |
439d473b ACM |
1235 | map = kernel_maps__find_by_dso_name(dso_name); |
1236 | if (map == NULL) | |
1237 | continue; | |
1238 | ||
1239 | snprintf(path, sizeof(path), "%s/%s", | |
1240 | dirname, dent->d_name); | |
1241 | ||
cfc10d3b ACM |
1242 | long_name = strdup(path); |
1243 | if (long_name == NULL) | |
439d473b | 1244 | goto failure; |
cfc10d3b | 1245 | dso__set_long_name(map->dso, long_name); |
439d473b | 1246 | } |
439d473b | 1247 | } |
6cfcc53e | 1248 | |
c338aee8 | 1249 | return 0; |
439d473b ACM |
1250 | failure: |
1251 | closedir(dir); | |
1252 | return -1; | |
1253 | } | |
6cfcc53e | 1254 | |
c338aee8 | 1255 | static int dsos__set_modules_path(void) |
439d473b ACM |
1256 | { |
1257 | struct utsname uts; | |
1258 | char modules_path[PATH_MAX]; | |
6cfcc53e | 1259 | |
439d473b ACM |
1260 | if (uname(&uts) < 0) |
1261 | return -1; | |
6cfcc53e | 1262 | |
439d473b ACM |
1263 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
1264 | uts.release); | |
6cfcc53e | 1265 | |
c338aee8 | 1266 | return dsos__set_modules_path_dir(modules_path); |
6cfcc53e MG |
1267 | } |
1268 | ||
439d473b ACM |
1269 | /* |
1270 | * Constructor variant for modules (where we know from /proc/modules where | |
1271 | * they are loaded) and for vmlinux, where only after we load all the | |
1272 | * symbols we'll know where it starts and ends. | |
1273 | */ | |
1274 | static struct map *map__new2(u64 start, struct dso *dso) | |
6cfcc53e | 1275 | { |
439d473b | 1276 | struct map *self = malloc(sizeof(*self)); |
6cfcc53e | 1277 | |
439d473b | 1278 | if (self != NULL) { |
439d473b | 1279 | /* |
afb7b4f0 | 1280 | * ->end will be filled after we load all the symbols |
439d473b | 1281 | */ |
afb7b4f0 | 1282 | map__init(self, start, 0, 0, dso); |
439d473b | 1283 | } |
afb7b4f0 | 1284 | |
439d473b ACM |
1285 | return self; |
1286 | } | |
1287 | ||
c338aee8 | 1288 | static int kernel_maps__create_module_maps(void) |
439d473b ACM |
1289 | { |
1290 | char *line = NULL; | |
1291 | size_t n; | |
1292 | FILE *file = fopen("/proc/modules", "r"); | |
1293 | struct map *map; | |
6cfcc53e | 1294 | |
439d473b ACM |
1295 | if (file == NULL) |
1296 | return -1; | |
6cfcc53e | 1297 | |
439d473b ACM |
1298 | while (!feof(file)) { |
1299 | char name[PATH_MAX]; | |
1300 | u64 start; | |
1301 | struct dso *dso; | |
1302 | char *sep; | |
1303 | int line_len; | |
6cfcc53e | 1304 | |
439d473b ACM |
1305 | line_len = getline(&line, &n, file); |
1306 | if (line_len < 0) | |
1307 | break; | |
1308 | ||
1309 | if (!line) | |
1310 | goto out_failure; | |
1311 | ||
1312 | line[--line_len] = '\0'; /* \n */ | |
1313 | ||
1314 | sep = strrchr(line, 'x'); | |
1315 | if (sep == NULL) | |
1316 | continue; | |
1317 | ||
1318 | hex2u64(sep + 1, &start); | |
1319 | ||
1320 | sep = strchr(line, ' '); | |
1321 | if (sep == NULL) | |
1322 | continue; | |
1323 | ||
1324 | *sep = '\0'; | |
1325 | ||
1326 | snprintf(name, sizeof(name), "[%s]", line); | |
00a192b3 | 1327 | dso = dso__new(name); |
439d473b ACM |
1328 | |
1329 | if (dso == NULL) | |
1330 | goto out_delete_line; | |
1331 | ||
1332 | map = map__new2(start, dso); | |
1333 | if (map == NULL) { | |
1334 | dso__delete(dso); | |
1335 | goto out_delete_line; | |
6cfcc53e | 1336 | } |
439d473b | 1337 | |
f1617b40 ACM |
1338 | snprintf(name, sizeof(name), |
1339 | "/sys/module/%s/notes/.note.gnu.build-id", line); | |
1340 | if (sysfs__read_build_id(name, dso->build_id, | |
1341 | sizeof(dso->build_id)) == 0) | |
1342 | dso->has_build_id = true; | |
1343 | ||
439d473b ACM |
1344 | dso->origin = DSO__ORIG_KMODULE; |
1345 | kernel_maps__insert(map); | |
1346 | dsos__add(dso); | |
6cfcc53e | 1347 | } |
439d473b ACM |
1348 | |
1349 | free(line); | |
1350 | fclose(file); | |
1351 | ||
c338aee8 | 1352 | return dsos__set_modules_path(); |
439d473b ACM |
1353 | |
1354 | out_delete_line: | |
1355 | free(line); | |
1356 | out_failure: | |
1357 | return -1; | |
6cfcc53e MG |
1358 | } |
1359 | ||
439d473b | 1360 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
6beba7ad | 1361 | const char *vmlinux, symbol_filter_t filter) |
a2928c42 | 1362 | { |
fbd733b8 | 1363 | int err = -1, fd; |
a2928c42 | 1364 | |
fbd733b8 ACM |
1365 | if (self->has_build_id) { |
1366 | u8 build_id[BUILD_ID_SIZE]; | |
1367 | ||
1368 | if (filename__read_build_id(vmlinux, build_id, | |
1369 | sizeof(build_id)) < 0) { | |
1370 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); | |
1371 | return -1; | |
1372 | } | |
1373 | if (!dso__build_id_equal(self, build_id)) { | |
1374 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], | |
1375 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; | |
1376 | ||
1377 | build_id__sprintf(self->build_id, | |
1378 | sizeof(self->build_id), | |
1379 | expected_build_id); | |
1380 | build_id__sprintf(build_id, sizeof(build_id), | |
1381 | vmlinux_build_id); | |
1382 | pr_debug("build_id in %s is %s while expected is %s, " | |
1383 | "ignoring it\n", vmlinux, vmlinux_build_id, | |
1384 | expected_build_id); | |
1385 | return -1; | |
1386 | } | |
1387 | } | |
66bd8424 | 1388 | |
fbd733b8 | 1389 | fd = open(vmlinux, O_RDONLY); |
a2928c42 ACM |
1390 | if (fd < 0) |
1391 | return -1; | |
1392 | ||
fbd733b8 | 1393 | self->loaded = 1; |
6beba7ad | 1394 | err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0); |
6cfcc53e | 1395 | |
a2928c42 ACM |
1396 | close(fd); |
1397 | ||
1398 | return err; | |
1399 | } | |
1400 | ||
c338aee8 ACM |
1401 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
1402 | symbol_filter_t filter) | |
a827c875 | 1403 | { |
cc612d81 ACM |
1404 | int err; |
1405 | bool is_kallsyms; | |
1406 | ||
1407 | if (vmlinux_path != NULL) { | |
1408 | int i; | |
1409 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", | |
1410 | vmlinux_path__nr_entries); | |
1411 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { | |
1412 | err = dso__load_vmlinux(self, map, vmlinux_path[i], | |
1413 | filter); | |
1414 | if (err > 0) { | |
1415 | pr_debug("Using %s for symbols\n", | |
1416 | vmlinux_path[i]); | |
1417 | dso__set_long_name(self, | |
1418 | strdup(vmlinux_path[i])); | |
1419 | goto out_fixup; | |
1420 | } | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | is_kallsyms = self->long_name[0] == '['; | |
1425 | if (is_kallsyms) | |
1426 | goto do_kallsyms; | |
439d473b | 1427 | |
cc612d81 | 1428 | err = dso__load_vmlinux(self, map, self->long_name, filter); |
ef6ae724 | 1429 | if (err <= 0) { |
cc612d81 ACM |
1430 | pr_info("The file %s cannot be used, " |
1431 | "trying to use /proc/kallsyms...", self->long_name); | |
1432 | sleep(2); | |
1433 | do_kallsyms: | |
c338aee8 | 1434 | err = kernel_maps__load_kallsyms(filter); |
cc612d81 | 1435 | if (err > 0 && !is_kallsyms) |
ef6ae724 ACM |
1436 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
1437 | } | |
439d473b ACM |
1438 | |
1439 | if (err > 0) { | |
cc612d81 | 1440 | out_fixup: |
fcf1203a ACM |
1441 | map__fixup_start(map, &map->dso->functions); |
1442 | map__fixup_end(map, &map->dso->functions); | |
439d473b | 1443 | } |
94cb9e38 | 1444 | |
a827c875 ACM |
1445 | return err; |
1446 | } | |
1447 | ||
cd84c2ac | 1448 | LIST_HEAD(dsos); |
cc612d81 | 1449 | struct dso *vdso; |
cd84c2ac FW |
1450 | |
1451 | static void dsos__add(struct dso *dso) | |
1452 | { | |
1453 | list_add_tail(&dso->node, &dsos); | |
1454 | } | |
1455 | ||
1456 | static struct dso *dsos__find(const char *name) | |
1457 | { | |
1458 | struct dso *pos; | |
1459 | ||
1460 | list_for_each_entry(pos, &dsos, node) | |
1461 | if (strcmp(pos->name, name) == 0) | |
1462 | return pos; | |
1463 | return NULL; | |
1464 | } | |
1465 | ||
00a192b3 | 1466 | struct dso *dsos__findnew(const char *name) |
cd84c2ac FW |
1467 | { |
1468 | struct dso *dso = dsos__find(name); | |
cd84c2ac | 1469 | |
e4204992 | 1470 | if (!dso) { |
00a192b3 | 1471 | dso = dso__new(name); |
cfc10d3b | 1472 | if (dso != NULL) { |
e4204992 | 1473 | dsos__add(dso); |
cfc10d3b ACM |
1474 | dso__set_basename(dso); |
1475 | } | |
66bd8424 | 1476 | } |
cd84c2ac FW |
1477 | |
1478 | return dso; | |
cd84c2ac FW |
1479 | } |
1480 | ||
1481 | void dsos__fprintf(FILE *fp) | |
1482 | { | |
1483 | struct dso *pos; | |
1484 | ||
1485 | list_for_each_entry(pos, &dsos, node) | |
1486 | dso__fprintf(pos, fp); | |
1487 | } | |
1488 | ||
9e03eb2d ACM |
1489 | size_t dsos__fprintf_buildid(FILE *fp) |
1490 | { | |
1491 | struct dso *pos; | |
1492 | size_t ret = 0; | |
1493 | ||
1494 | list_for_each_entry(pos, &dsos, node) { | |
1495 | ret += dso__fprintf_buildid(pos, fp); | |
1124ba73 | 1496 | ret += fprintf(fp, " %s\n", pos->long_name); |
9e03eb2d ACM |
1497 | } |
1498 | return ret; | |
1499 | } | |
1500 | ||
b32d133a | 1501 | static int kernel_maps__create_kernel_map(const struct symbol_conf *conf) |
cd84c2ac | 1502 | { |
b32d133a | 1503 | struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]"); |
cd84c2ac | 1504 | |
2446042c | 1505 | if (kernel == NULL) |
c338aee8 ACM |
1506 | return -1; |
1507 | ||
61f37a82 ACM |
1508 | kernel_map__functions = map__new2(0, kernel); |
1509 | if (kernel_map__functions == NULL) | |
c338aee8 ACM |
1510 | goto out_delete_kernel_dso; |
1511 | ||
61f37a82 | 1512 | kernel_map__functions->map_ip = kernel_map__functions->unmap_ip = identity__map_ip; |
cc612d81 ACM |
1513 | kernel->short_name = "[kernel]"; |
1514 | kernel->kernel = 1; | |
2446042c | 1515 | |
00a192b3 | 1516 | vdso = dso__new("[vdso]"); |
c338aee8 ACM |
1517 | if (vdso == NULL) |
1518 | goto out_delete_kernel_map; | |
3f5ee186 | 1519 | vdso->loaded = 1; |
2446042c ACM |
1520 | |
1521 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, | |
1522 | sizeof(kernel->build_id)) == 0) | |
1523 | kernel->has_build_id = true; | |
cd84c2ac | 1524 | |
61f37a82 | 1525 | kernel_maps__insert(kernel_map__functions); |
2446042c | 1526 | dsos__add(kernel); |
cd84c2ac FW |
1527 | dsos__add(vdso); |
1528 | ||
c338aee8 ACM |
1529 | return 0; |
1530 | ||
1531 | out_delete_kernel_map: | |
61f37a82 ACM |
1532 | map__delete(kernel_map__functions); |
1533 | kernel_map__functions = NULL; | |
c338aee8 ACM |
1534 | out_delete_kernel_dso: |
1535 | dso__delete(kernel); | |
1536 | return -1; | |
2446042c ACM |
1537 | } |
1538 | ||
cc612d81 ACM |
1539 | static void vmlinux_path__exit(void) |
1540 | { | |
1541 | while (--vmlinux_path__nr_entries >= 0) { | |
1542 | free(vmlinux_path[vmlinux_path__nr_entries]); | |
1543 | vmlinux_path[vmlinux_path__nr_entries] = NULL; | |
1544 | } | |
1545 | ||
1546 | free(vmlinux_path); | |
1547 | vmlinux_path = NULL; | |
1548 | } | |
1549 | ||
1550 | static int vmlinux_path__init(void) | |
1551 | { | |
1552 | struct utsname uts; | |
1553 | char bf[PATH_MAX]; | |
1554 | ||
1555 | if (uname(&uts) < 0) | |
1556 | return -1; | |
1557 | ||
1558 | vmlinux_path = malloc(sizeof(char *) * 5); | |
1559 | if (vmlinux_path == NULL) | |
1560 | return -1; | |
1561 | ||
1562 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); | |
1563 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1564 | goto out_fail; | |
1565 | ++vmlinux_path__nr_entries; | |
1566 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); | |
1567 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1568 | goto out_fail; | |
1569 | ++vmlinux_path__nr_entries; | |
1570 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); | |
1571 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1572 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1573 | goto out_fail; | |
1574 | ++vmlinux_path__nr_entries; | |
1575 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); | |
1576 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1577 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1578 | goto out_fail; | |
1579 | ++vmlinux_path__nr_entries; | |
1580 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", | |
1581 | uts.release); | |
1582 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1583 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1584 | goto out_fail; | |
1585 | ++vmlinux_path__nr_entries; | |
1586 | ||
1587 | return 0; | |
1588 | ||
1589 | out_fail: | |
1590 | vmlinux_path__exit(); | |
1591 | return -1; | |
1592 | } | |
1593 | ||
b32d133a | 1594 | static int kernel_maps__init(const struct symbol_conf *conf) |
2446042c | 1595 | { |
b32d133a ACM |
1596 | const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults; |
1597 | ||
1598 | symbol__priv_size = pconf->priv_size; | |
1599 | ||
1600 | if (pconf->try_vmlinux_path && vmlinux_path__init() < 0) | |
2446042c ACM |
1601 | return -1; |
1602 | ||
b32d133a | 1603 | if (kernel_maps__create_kernel_map(pconf) < 0) { |
cc612d81 ACM |
1604 | vmlinux_path__exit(); |
1605 | return -1; | |
1606 | } | |
1607 | ||
b32d133a | 1608 | if (pconf->use_modules && kernel_maps__create_module_maps() < 0) |
87f8ea4c ACM |
1609 | pr_debug("Failed to load list of modules in use, " |
1610 | "continuing...\n"); | |
90c83218 ACM |
1611 | /* |
1612 | * Now that we have all the maps created, just set the ->end of them: | |
1613 | */ | |
1614 | kernel_maps__fixup_end(); | |
6671cb16 | 1615 | return 0; |
cd84c2ac FW |
1616 | } |
1617 | ||
b32d133a | 1618 | int symbol__init(struct symbol_conf *conf) |
a2928c42 ACM |
1619 | { |
1620 | elf_version(EV_CURRENT); | |
b32d133a | 1621 | return kernel_maps__init(conf); |
a2928c42 | 1622 | } |