Commit | Line | Data |
---|---|---|
5aab621b ACM |
1 | #define _GNU_SOURCE |
2 | #include <ctype.h> | |
3 | #include <dirent.h> | |
4 | #include <errno.h> | |
5 | #include <libgen.h> | |
6 | #include <stdlib.h> | |
7 | #include <stdio.h> | |
8 | #include <string.h> | |
9 | #include <sys/types.h> | |
10 | #include <sys/stat.h> | |
11 | #include <sys/param.h> | |
12 | #include <fcntl.h> | |
13 | #include <unistd.h> | |
b36f19d5 | 14 | #include "build-id.h" |
8a6c5b26 | 15 | #include "debug.h" |
a2928c42 | 16 | #include "symbol.h" |
5aab621b | 17 | #include "strlist.h" |
a2928c42 ACM |
18 | |
19 | #include <libelf.h> | |
20 | #include <gelf.h> | |
21 | #include <elf.h> | |
f1617b40 | 22 | #include <limits.h> |
439d473b | 23 | #include <sys/utsname.h> |
2cdbc46d | 24 | |
c12e15e7 ACM |
25 | #ifndef NT_GNU_BUILD_ID |
26 | #define NT_GNU_BUILD_ID 3 | |
27 | #endif | |
28 | ||
21916c38 DM |
29 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id); |
30 | static int elf_read_build_id(Elf *elf, void *bf, size_t size); | |
b0da954a | 31 | static void dsos__add(struct list_head *head, struct dso *dso); |
3610583c | 32 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
c338aee8 | 33 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
9de89fe7 | 34 | symbol_filter_t filter); |
a1645ce1 ZY |
35 | static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, |
36 | symbol_filter_t filter); | |
cc612d81 ACM |
37 | static int vmlinux_path__nr_entries; |
38 | static char **vmlinux_path; | |
439d473b | 39 | |
75be6cf4 | 40 | struct symbol_conf symbol_conf = { |
d599db3f | 41 | .exclude_other = true, |
b32d133a ACM |
42 | .use_modules = true, |
43 | .try_vmlinux_path = true, | |
ec5761ea | 44 | .symfs = "", |
b32d133a ACM |
45 | }; |
46 | ||
8a6c5b26 ACM |
47 | int dso__name_len(const struct dso *self) |
48 | { | |
49 | if (verbose) | |
50 | return self->long_name_len; | |
51 | ||
52 | return self->short_name_len; | |
53 | } | |
54 | ||
3610583c ACM |
55 | bool dso__loaded(const struct dso *self, enum map_type type) |
56 | { | |
57 | return self->loaded & (1 << type); | |
58 | } | |
59 | ||
79406cd7 ACM |
60 | bool dso__sorted_by_name(const struct dso *self, enum map_type type) |
61 | { | |
62 | return self->sorted_by_name & (1 << type); | |
63 | } | |
64 | ||
79406cd7 ACM |
65 | static void dso__set_sorted_by_name(struct dso *self, enum map_type type) |
66 | { | |
67 | self->sorted_by_name |= (1 << type); | |
68 | } | |
69 | ||
36a3e646 | 70 | bool symbol_type__is_a(char symbol_type, enum map_type map_type) |
6893d4ee ACM |
71 | { |
72 | switch (map_type) { | |
73 | case MAP__FUNCTION: | |
74 | return symbol_type == 'T' || symbol_type == 'W'; | |
f1dfa0b1 ACM |
75 | case MAP__VARIABLE: |
76 | return symbol_type == 'D' || symbol_type == 'd'; | |
6893d4ee ACM |
77 | default: |
78 | return false; | |
79 | } | |
80 | } | |
81 | ||
fcf1203a | 82 | static void symbols__fixup_end(struct rb_root *self) |
af427bf5 | 83 | { |
fcf1203a | 84 | struct rb_node *nd, *prevnd = rb_first(self); |
2e538c4a | 85 | struct symbol *curr, *prev; |
af427bf5 ACM |
86 | |
87 | if (prevnd == NULL) | |
88 | return; | |
89 | ||
2e538c4a ACM |
90 | curr = rb_entry(prevnd, struct symbol, rb_node); |
91 | ||
af427bf5 | 92 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
2e538c4a ACM |
93 | prev = curr; |
94 | curr = rb_entry(nd, struct symbol, rb_node); | |
af427bf5 ACM |
95 | |
96 | if (prev->end == prev->start) | |
97 | prev->end = curr->start - 1; | |
af427bf5 | 98 | } |
2e538c4a ACM |
99 | |
100 | /* Last entry */ | |
101 | if (curr->end == curr->start) | |
102 | curr->end = roundup(curr->start, 4096); | |
af427bf5 ACM |
103 | } |
104 | ||
9958e1f0 | 105 | static void __map_groups__fixup_end(struct map_groups *self, enum map_type type) |
af427bf5 ACM |
106 | { |
107 | struct map *prev, *curr; | |
95011c60 | 108 | struct rb_node *nd, *prevnd = rb_first(&self->maps[type]); |
af427bf5 ACM |
109 | |
110 | if (prevnd == NULL) | |
111 | return; | |
112 | ||
113 | curr = rb_entry(prevnd, struct map, rb_node); | |
af427bf5 ACM |
114 | |
115 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { | |
116 | prev = curr; | |
117 | curr = rb_entry(nd, struct map, rb_node); | |
118 | prev->end = curr->start - 1; | |
2e538c4a | 119 | } |
90c83218 ACM |
120 | |
121 | /* | |
122 | * We still haven't the actual symbols, so guess the | |
123 | * last map final address. | |
124 | */ | |
9d1faba5 | 125 | curr->end = ~0ULL; |
af427bf5 ACM |
126 | } |
127 | ||
9958e1f0 | 128 | static void map_groups__fixup_end(struct map_groups *self) |
23ea4a3f ACM |
129 | { |
130 | int i; | |
131 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
9958e1f0 | 132 | __map_groups__fixup_end(self, i); |
23ea4a3f ACM |
133 | } |
134 | ||
c408fedf ACM |
135 | static struct symbol *symbol__new(u64 start, u64 len, u8 binding, |
136 | const char *name) | |
a2928c42 | 137 | { |
0085c954 | 138 | size_t namelen = strlen(name) + 1; |
5aab621b ACM |
139 | struct symbol *self = calloc(1, (symbol_conf.priv_size + |
140 | sizeof(*self) + namelen)); | |
36479484 | 141 | if (self == NULL) |
0b73da3f IM |
142 | return NULL; |
143 | ||
75be6cf4 ACM |
144 | if (symbol_conf.priv_size) |
145 | self = ((void *)self) + symbol_conf.priv_size; | |
36479484 | 146 | |
fefb0b94 ACM |
147 | self->start = start; |
148 | self->end = len ? start + len - 1 : start; | |
c408fedf | 149 | self->binding = binding; |
fefb0b94 | 150 | self->namelen = namelen - 1; |
e4204992 | 151 | |
29a9f66d | 152 | pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
e4204992 | 153 | |
0b73da3f | 154 | memcpy(self->name, name, namelen); |
a2928c42 ACM |
155 | |
156 | return self; | |
157 | } | |
158 | ||
628ada0c | 159 | void symbol__delete(struct symbol *self) |
a2928c42 | 160 | { |
75be6cf4 | 161 | free(((void *)self) - symbol_conf.priv_size); |
a2928c42 ACM |
162 | } |
163 | ||
164 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) | |
165 | { | |
c408fedf ACM |
166 | return fprintf(fp, " %llx-%llx %c %s\n", |
167 | self->start, self->end, | |
168 | self->binding == STB_GLOBAL ? 'g' : | |
169 | self->binding == STB_LOCAL ? 'l' : 'w', | |
170 | self->name); | |
a2928c42 ACM |
171 | } |
172 | ||
b7cece76 | 173 | void dso__set_long_name(struct dso *self, char *name) |
cfc10d3b | 174 | { |
ef6ae724 ACM |
175 | if (name == NULL) |
176 | return; | |
cfc10d3b ACM |
177 | self->long_name = name; |
178 | self->long_name_len = strlen(name); | |
179 | } | |
180 | ||
b63be8d7 ACM |
181 | static void dso__set_short_name(struct dso *self, const char *name) |
182 | { | |
183 | if (name == NULL) | |
184 | return; | |
185 | self->short_name = name; | |
186 | self->short_name_len = strlen(name); | |
187 | } | |
188 | ||
cfc10d3b ACM |
189 | static void dso__set_basename(struct dso *self) |
190 | { | |
b63be8d7 | 191 | dso__set_short_name(self, basename(self->long_name)); |
cfc10d3b ACM |
192 | } |
193 | ||
00a192b3 | 194 | struct dso *dso__new(const char *name) |
a2928c42 | 195 | { |
5aab621b | 196 | struct dso *self = calloc(1, sizeof(*self) + strlen(name) + 1); |
a2928c42 ACM |
197 | |
198 | if (self != NULL) { | |
6a4694a4 | 199 | int i; |
a2928c42 | 200 | strcpy(self->name, name); |
cfc10d3b | 201 | dso__set_long_name(self, self->name); |
b63be8d7 | 202 | dso__set_short_name(self, self->name); |
6a4694a4 | 203 | for (i = 0; i < MAP__NR_TYPES; ++i) |
79406cd7 | 204 | self->symbols[i] = self->symbol_names[i] = RB_ROOT; |
52d422de | 205 | self->slen_calculated = 0; |
94cb9e38 | 206 | self->origin = DSO__ORIG_NOT_FOUND; |
8d06367f | 207 | self->loaded = 0; |
79406cd7 | 208 | self->sorted_by_name = 0; |
8d06367f | 209 | self->has_build_id = 0; |
a1645ce1 | 210 | self->kernel = DSO_TYPE_USER; |
0ab061cd | 211 | INIT_LIST_HEAD(&self->node); |
a2928c42 ACM |
212 | } |
213 | ||
214 | return self; | |
215 | } | |
216 | ||
fcf1203a | 217 | static void symbols__delete(struct rb_root *self) |
a2928c42 ACM |
218 | { |
219 | struct symbol *pos; | |
fcf1203a | 220 | struct rb_node *next = rb_first(self); |
a2928c42 ACM |
221 | |
222 | while (next) { | |
223 | pos = rb_entry(next, struct symbol, rb_node); | |
224 | next = rb_next(&pos->rb_node); | |
fcf1203a | 225 | rb_erase(&pos->rb_node, self); |
00a192b3 | 226 | symbol__delete(pos); |
a2928c42 ACM |
227 | } |
228 | } | |
229 | ||
230 | void dso__delete(struct dso *self) | |
231 | { | |
6a4694a4 ACM |
232 | int i; |
233 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
234 | symbols__delete(&self->symbols[i]); | |
6e406257 ACM |
235 | if (self->sname_alloc) |
236 | free((char *)self->short_name); | |
237 | if (self->lname_alloc) | |
439d473b | 238 | free(self->long_name); |
a2928c42 ACM |
239 | free(self); |
240 | } | |
241 | ||
8d06367f ACM |
242 | void dso__set_build_id(struct dso *self, void *build_id) |
243 | { | |
244 | memcpy(self->build_id, build_id, sizeof(self->build_id)); | |
245 | self->has_build_id = 1; | |
246 | } | |
247 | ||
fcf1203a | 248 | static void symbols__insert(struct rb_root *self, struct symbol *sym) |
a2928c42 | 249 | { |
fcf1203a | 250 | struct rb_node **p = &self->rb_node; |
a2928c42 | 251 | struct rb_node *parent = NULL; |
9cffa8d5 | 252 | const u64 ip = sym->start; |
a2928c42 ACM |
253 | struct symbol *s; |
254 | ||
255 | while (*p != NULL) { | |
256 | parent = *p; | |
257 | s = rb_entry(parent, struct symbol, rb_node); | |
258 | if (ip < s->start) | |
259 | p = &(*p)->rb_left; | |
260 | else | |
261 | p = &(*p)->rb_right; | |
262 | } | |
263 | rb_link_node(&sym->rb_node, parent, p); | |
fcf1203a | 264 | rb_insert_color(&sym->rb_node, self); |
a2928c42 ACM |
265 | } |
266 | ||
fcf1203a | 267 | static struct symbol *symbols__find(struct rb_root *self, u64 ip) |
a2928c42 ACM |
268 | { |
269 | struct rb_node *n; | |
270 | ||
271 | if (self == NULL) | |
272 | return NULL; | |
273 | ||
fcf1203a | 274 | n = self->rb_node; |
a2928c42 ACM |
275 | |
276 | while (n) { | |
277 | struct symbol *s = rb_entry(n, struct symbol, rb_node); | |
278 | ||
279 | if (ip < s->start) | |
280 | n = n->rb_left; | |
281 | else if (ip > s->end) | |
282 | n = n->rb_right; | |
283 | else | |
284 | return s; | |
285 | } | |
286 | ||
287 | return NULL; | |
288 | } | |
289 | ||
79406cd7 ACM |
290 | struct symbol_name_rb_node { |
291 | struct rb_node rb_node; | |
292 | struct symbol sym; | |
293 | }; | |
294 | ||
295 | static void symbols__insert_by_name(struct rb_root *self, struct symbol *sym) | |
296 | { | |
297 | struct rb_node **p = &self->rb_node; | |
298 | struct rb_node *parent = NULL; | |
02a9d037 RV |
299 | struct symbol_name_rb_node *symn, *s; |
300 | ||
301 | symn = container_of(sym, struct symbol_name_rb_node, sym); | |
79406cd7 ACM |
302 | |
303 | while (*p != NULL) { | |
304 | parent = *p; | |
305 | s = rb_entry(parent, struct symbol_name_rb_node, rb_node); | |
306 | if (strcmp(sym->name, s->sym.name) < 0) | |
307 | p = &(*p)->rb_left; | |
308 | else | |
309 | p = &(*p)->rb_right; | |
310 | } | |
311 | rb_link_node(&symn->rb_node, parent, p); | |
312 | rb_insert_color(&symn->rb_node, self); | |
313 | } | |
314 | ||
315 | static void symbols__sort_by_name(struct rb_root *self, struct rb_root *source) | |
316 | { | |
317 | struct rb_node *nd; | |
318 | ||
319 | for (nd = rb_first(source); nd; nd = rb_next(nd)) { | |
320 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
321 | symbols__insert_by_name(self, pos); | |
322 | } | |
323 | } | |
324 | ||
325 | static struct symbol *symbols__find_by_name(struct rb_root *self, const char *name) | |
326 | { | |
327 | struct rb_node *n; | |
328 | ||
329 | if (self == NULL) | |
330 | return NULL; | |
331 | ||
332 | n = self->rb_node; | |
333 | ||
334 | while (n) { | |
335 | struct symbol_name_rb_node *s; | |
336 | int cmp; | |
337 | ||
338 | s = rb_entry(n, struct symbol_name_rb_node, rb_node); | |
339 | cmp = strcmp(name, s->sym.name); | |
340 | ||
341 | if (cmp < 0) | |
342 | n = n->rb_left; | |
343 | else if (cmp > 0) | |
344 | n = n->rb_right; | |
345 | else | |
346 | return &s->sym; | |
347 | } | |
348 | ||
349 | return NULL; | |
350 | } | |
351 | ||
352 | struct symbol *dso__find_symbol(struct dso *self, | |
353 | enum map_type type, u64 addr) | |
fcf1203a | 354 | { |
6a4694a4 | 355 | return symbols__find(&self->symbols[type], addr); |
fcf1203a ACM |
356 | } |
357 | ||
79406cd7 ACM |
358 | struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type, |
359 | const char *name) | |
360 | { | |
361 | return symbols__find_by_name(&self->symbol_names[type], name); | |
362 | } | |
363 | ||
364 | void dso__sort_by_name(struct dso *self, enum map_type type) | |
365 | { | |
366 | dso__set_sorted_by_name(self, type); | |
367 | return symbols__sort_by_name(&self->symbol_names[type], | |
368 | &self->symbols[type]); | |
369 | } | |
370 | ||
ef12a141 | 371 | int build_id__sprintf(const u8 *self, int len, char *bf) |
a2928c42 | 372 | { |
8d06367f | 373 | char *bid = bf; |
ef12a141 | 374 | const u8 *raw = self; |
8d06367f | 375 | int i; |
a2928c42 | 376 | |
8d06367f ACM |
377 | for (i = 0; i < len; ++i) { |
378 | sprintf(bid, "%02x", *raw); | |
379 | ++raw; | |
380 | bid += 2; | |
381 | } | |
382 | ||
383 | return raw - self; | |
384 | } | |
385 | ||
9e03eb2d | 386 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
8d06367f ACM |
387 | { |
388 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
8d06367f ACM |
389 | |
390 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
9e03eb2d ACM |
391 | return fprintf(fp, "%s", sbuild_id); |
392 | } | |
393 | ||
90f18e63 SD |
394 | size_t dso__fprintf_symbols_by_name(struct dso *self, enum map_type type, FILE *fp) |
395 | { | |
396 | size_t ret = 0; | |
397 | struct rb_node *nd; | |
398 | struct symbol_name_rb_node *pos; | |
399 | ||
400 | for (nd = rb_first(&self->symbol_names[type]); nd; nd = rb_next(nd)) { | |
401 | pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); | |
402 | fprintf(fp, "%s\n", pos->sym.name); | |
403 | } | |
404 | ||
405 | return ret; | |
406 | } | |
407 | ||
95011c60 | 408 | size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) |
9e03eb2d ACM |
409 | { |
410 | struct rb_node *nd; | |
411 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); | |
412 | ||
3846df2e ACM |
413 | if (self->short_name != self->long_name) |
414 | ret += fprintf(fp, "%s, ", self->long_name); | |
415 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], | |
416 | self->loaded ? "" : "NOT "); | |
9e03eb2d | 417 | ret += dso__fprintf_buildid(self, fp); |
6a4694a4 | 418 | ret += fprintf(fp, ")\n"); |
95011c60 ACM |
419 | for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { |
420 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
421 | ret += symbol__fprintf(pos, fp); | |
a2928c42 ACM |
422 | } |
423 | ||
424 | return ret; | |
425 | } | |
426 | ||
9e201442 ACM |
427 | int kallsyms__parse(const char *filename, void *arg, |
428 | int (*process_symbol)(void *arg, const char *name, | |
682b335a | 429 | char type, u64 start)) |
a2928c42 | 430 | { |
a2928c42 ACM |
431 | char *line = NULL; |
432 | size_t n; | |
682b335a | 433 | int err = 0; |
9e201442 | 434 | FILE *file = fopen(filename, "r"); |
a2928c42 ACM |
435 | |
436 | if (file == NULL) | |
437 | goto out_failure; | |
438 | ||
439 | while (!feof(file)) { | |
9cffa8d5 | 440 | u64 start; |
a2928c42 ACM |
441 | int line_len, len; |
442 | char symbol_type; | |
2e538c4a | 443 | char *symbol_name; |
a2928c42 ACM |
444 | |
445 | line_len = getline(&line, &n, file); | |
a1645ce1 | 446 | if (line_len < 0 || !line) |
a2928c42 ACM |
447 | break; |
448 | ||
a2928c42 ACM |
449 | line[--line_len] = '\0'; /* \n */ |
450 | ||
a0055ae2 | 451 | len = hex2u64(line, &start); |
a2928c42 ACM |
452 | |
453 | len++; | |
454 | if (len + 2 >= line_len) | |
455 | continue; | |
456 | ||
457 | symbol_type = toupper(line[len]); | |
af427bf5 | 458 | symbol_name = line + len + 2; |
682b335a ACM |
459 | |
460 | err = process_symbol(arg, symbol_name, symbol_type, start); | |
461 | if (err) | |
462 | break; | |
2e538c4a ACM |
463 | } |
464 | ||
465 | free(line); | |
466 | fclose(file); | |
682b335a | 467 | return err; |
2e538c4a | 468 | |
2e538c4a ACM |
469 | out_failure: |
470 | return -1; | |
471 | } | |
472 | ||
682b335a ACM |
473 | struct process_kallsyms_args { |
474 | struct map *map; | |
475 | struct dso *dso; | |
476 | }; | |
477 | ||
c408fedf ACM |
478 | static u8 kallsyms2elf_type(char type) |
479 | { | |
480 | if (type == 'W') | |
481 | return STB_WEAK; | |
482 | ||
483 | return isupper(type) ? STB_GLOBAL : STB_LOCAL; | |
484 | } | |
485 | ||
682b335a ACM |
486 | static int map__process_kallsym_symbol(void *arg, const char *name, |
487 | char type, u64 start) | |
488 | { | |
489 | struct symbol *sym; | |
490 | struct process_kallsyms_args *a = arg; | |
491 | struct rb_root *root = &a->dso->symbols[a->map->type]; | |
492 | ||
493 | if (!symbol_type__is_a(type, a->map->type)) | |
494 | return 0; | |
495 | ||
496 | /* | |
497 | * Will fix up the end later, when we have all symbols sorted. | |
498 | */ | |
c408fedf | 499 | sym = symbol__new(start, 0, kallsyms2elf_type(type), name); |
682b335a ACM |
500 | |
501 | if (sym == NULL) | |
502 | return -ENOMEM; | |
503 | /* | |
504 | * We will pass the symbols to the filter later, in | |
505 | * map__split_kallsyms, when we have split the maps per module | |
506 | */ | |
507 | symbols__insert(root, sym); | |
a1645ce1 | 508 | |
682b335a ACM |
509 | return 0; |
510 | } | |
511 | ||
512 | /* | |
513 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, | |
514 | * so that we can in the next step set the symbol ->end address and then | |
515 | * call kernel_maps__split_kallsyms. | |
516 | */ | |
9e201442 ACM |
517 | static int dso__load_all_kallsyms(struct dso *self, const char *filename, |
518 | struct map *map) | |
682b335a ACM |
519 | { |
520 | struct process_kallsyms_args args = { .map = map, .dso = self, }; | |
9e201442 | 521 | return kallsyms__parse(filename, &args, map__process_kallsym_symbol); |
682b335a ACM |
522 | } |
523 | ||
2e538c4a ACM |
524 | /* |
525 | * Split the symbols into maps, making sure there are no overlaps, i.e. the | |
526 | * kernel range is broken in several maps, named [kernel].N, as we don't have | |
527 | * the original ELF section names vmlinux have. | |
528 | */ | |
9958e1f0 | 529 | static int dso__split_kallsyms(struct dso *self, struct map *map, |
9de89fe7 | 530 | symbol_filter_t filter) |
2e538c4a | 531 | { |
9de89fe7 | 532 | struct map_groups *kmaps = map__kmap(map)->kmaps; |
23346f21 | 533 | struct machine *machine = kmaps->machine; |
4e06255f | 534 | struct map *curr_map = map; |
2e538c4a | 535 | struct symbol *pos; |
8a953312 | 536 | int count = 0, moved = 0; |
4e06255f ACM |
537 | struct rb_root *root = &self->symbols[map->type]; |
538 | struct rb_node *next = rb_first(root); | |
2e538c4a ACM |
539 | int kernel_range = 0; |
540 | ||
541 | while (next) { | |
542 | char *module; | |
543 | ||
544 | pos = rb_entry(next, struct symbol, rb_node); | |
545 | next = rb_next(&pos->rb_node); | |
546 | ||
547 | module = strchr(pos->name, '\t'); | |
548 | if (module) { | |
75be6cf4 | 549 | if (!symbol_conf.use_modules) |
1de8e245 ACM |
550 | goto discard_symbol; |
551 | ||
2e538c4a ACM |
552 | *module++ = '\0'; |
553 | ||
b7cece76 | 554 | if (strcmp(curr_map->dso->short_name, module)) { |
a1645ce1 | 555 | if (curr_map != map && |
23346f21 ACM |
556 | self->kernel == DSO_TYPE_GUEST_KERNEL && |
557 | machine__is_default_guest(machine)) { | |
a1645ce1 ZY |
558 | /* |
559 | * We assume all symbols of a module are | |
560 | * continuous in * kallsyms, so curr_map | |
561 | * points to a module and all its | |
562 | * symbols are in its kmap. Mark it as | |
563 | * loaded. | |
564 | */ | |
565 | dso__set_loaded(curr_map->dso, | |
566 | curr_map->type); | |
567 | } | |
568 | ||
569 | curr_map = map_groups__find_by_name(kmaps, | |
570 | map->type, module); | |
4e06255f | 571 | if (curr_map == NULL) { |
2f51903b | 572 | pr_debug("%s/proc/{kallsyms,modules} " |
b7cece76 | 573 | "inconsistency while looking " |
a1645ce1 | 574 | "for \"%s\" module!\n", |
23346f21 | 575 | machine->root_dir, module); |
a1645ce1 ZY |
576 | curr_map = map; |
577 | goto discard_symbol; | |
af427bf5 | 578 | } |
b7cece76 | 579 | |
a1645ce1 | 580 | if (curr_map->dso->loaded && |
23346f21 | 581 | !machine__is_default_guest(machine)) |
b7cece76 | 582 | goto discard_symbol; |
af427bf5 | 583 | } |
2e538c4a ACM |
584 | /* |
585 | * So that we look just like we get from .ko files, | |
586 | * i.e. not prelinked, relative to map->start. | |
587 | */ | |
4e06255f ACM |
588 | pos->start = curr_map->map_ip(curr_map, pos->start); |
589 | pos->end = curr_map->map_ip(curr_map, pos->end); | |
590 | } else if (curr_map != map) { | |
2e538c4a ACM |
591 | char dso_name[PATH_MAX]; |
592 | struct dso *dso; | |
593 | ||
8a953312 ACM |
594 | if (count == 0) { |
595 | curr_map = map; | |
596 | goto filter_symbol; | |
597 | } | |
598 | ||
a1645ce1 ZY |
599 | if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
600 | snprintf(dso_name, sizeof(dso_name), | |
601 | "[guest.kernel].%d", | |
602 | kernel_range++); | |
603 | else | |
604 | snprintf(dso_name, sizeof(dso_name), | |
605 | "[kernel].%d", | |
606 | kernel_range++); | |
2e538c4a | 607 | |
00a192b3 | 608 | dso = dso__new(dso_name); |
2e538c4a ACM |
609 | if (dso == NULL) |
610 | return -1; | |
611 | ||
a1645ce1 ZY |
612 | dso->kernel = self->kernel; |
613 | ||
4e06255f | 614 | curr_map = map__new2(pos->start, dso, map->type); |
37fe5fcb | 615 | if (curr_map == NULL) { |
2e538c4a ACM |
616 | dso__delete(dso); |
617 | return -1; | |
618 | } | |
a2928c42 | 619 | |
4e06255f | 620 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
9de89fe7 | 621 | map_groups__insert(kmaps, curr_map); |
2e538c4a ACM |
622 | ++kernel_range; |
623 | } | |
8a953312 | 624 | filter_symbol: |
4e06255f | 625 | if (filter && filter(curr_map, pos)) { |
1de8e245 | 626 | discard_symbol: rb_erase(&pos->rb_node, root); |
00a192b3 | 627 | symbol__delete(pos); |
2e538c4a | 628 | } else { |
4e06255f ACM |
629 | if (curr_map != map) { |
630 | rb_erase(&pos->rb_node, root); | |
631 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); | |
8a953312 ACM |
632 | ++moved; |
633 | } else | |
634 | ++count; | |
9974f496 | 635 | } |
a2928c42 ACM |
636 | } |
637 | ||
a1645ce1 ZY |
638 | if (curr_map != map && |
639 | self->kernel == DSO_TYPE_GUEST_KERNEL && | |
23346f21 | 640 | machine__is_default_guest(kmaps->machine)) { |
a1645ce1 ZY |
641 | dso__set_loaded(curr_map->dso, curr_map->type); |
642 | } | |
643 | ||
8a953312 | 644 | return count + moved; |
2e538c4a | 645 | } |
a2928c42 | 646 | |
9de89fe7 ACM |
647 | int dso__load_kallsyms(struct dso *self, const char *filename, |
648 | struct map *map, symbol_filter_t filter) | |
2e538c4a | 649 | { |
9e201442 | 650 | if (dso__load_all_kallsyms(self, filename, map) < 0) |
2e538c4a ACM |
651 | return -1; |
652 | ||
4e06255f | 653 | symbols__fixup_end(&self->symbols[map->type]); |
a1645ce1 ZY |
654 | if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
655 | self->origin = DSO__ORIG_GUEST_KERNEL; | |
656 | else | |
657 | self->origin = DSO__ORIG_KERNEL; | |
2e538c4a | 658 | |
9de89fe7 | 659 | return dso__split_kallsyms(self, map, filter); |
af427bf5 ACM |
660 | } |
661 | ||
439d473b | 662 | static int dso__load_perf_map(struct dso *self, struct map *map, |
6beba7ad | 663 | symbol_filter_t filter) |
80d496be PE |
664 | { |
665 | char *line = NULL; | |
666 | size_t n; | |
667 | FILE *file; | |
668 | int nr_syms = 0; | |
669 | ||
439d473b | 670 | file = fopen(self->long_name, "r"); |
80d496be PE |
671 | if (file == NULL) |
672 | goto out_failure; | |
673 | ||
674 | while (!feof(file)) { | |
9cffa8d5 | 675 | u64 start, size; |
80d496be PE |
676 | struct symbol *sym; |
677 | int line_len, len; | |
678 | ||
679 | line_len = getline(&line, &n, file); | |
680 | if (line_len < 0) | |
681 | break; | |
682 | ||
683 | if (!line) | |
684 | goto out_failure; | |
685 | ||
686 | line[--line_len] = '\0'; /* \n */ | |
687 | ||
688 | len = hex2u64(line, &start); | |
689 | ||
690 | len++; | |
691 | if (len + 2 >= line_len) | |
692 | continue; | |
693 | ||
694 | len += hex2u64(line + len, &size); | |
695 | ||
696 | len++; | |
697 | if (len + 2 >= line_len) | |
698 | continue; | |
699 | ||
c408fedf | 700 | sym = symbol__new(start, size, STB_GLOBAL, line + len); |
80d496be PE |
701 | |
702 | if (sym == NULL) | |
703 | goto out_delete_line; | |
704 | ||
439d473b | 705 | if (filter && filter(map, sym)) |
00a192b3 | 706 | symbol__delete(sym); |
80d496be | 707 | else { |
6a4694a4 | 708 | symbols__insert(&self->symbols[map->type], sym); |
80d496be PE |
709 | nr_syms++; |
710 | } | |
711 | } | |
712 | ||
713 | free(line); | |
714 | fclose(file); | |
715 | ||
716 | return nr_syms; | |
717 | ||
718 | out_delete_line: | |
719 | free(line); | |
720 | out_failure: | |
721 | return -1; | |
722 | } | |
723 | ||
a2928c42 ACM |
724 | /** |
725 | * elf_symtab__for_each_symbol - iterate thru all the symbols | |
726 | * | |
727 | * @self: struct elf_symtab instance to iterate | |
83a0944f | 728 | * @idx: uint32_t idx |
a2928c42 ACM |
729 | * @sym: GElf_Sym iterator |
730 | */ | |
83a0944f IM |
731 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
732 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ | |
733 | idx < nr_syms; \ | |
734 | idx++, gelf_getsym(syms, idx, &sym)) | |
a2928c42 ACM |
735 | |
736 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) | |
737 | { | |
738 | return GELF_ST_TYPE(sym->st_info); | |
739 | } | |
740 | ||
741 | static inline int elf_sym__is_function(const GElf_Sym *sym) | |
742 | { | |
743 | return elf_sym__type(sym) == STT_FUNC && | |
744 | sym->st_name != 0 && | |
81833130 | 745 | sym->st_shndx != SHN_UNDEF; |
a2928c42 ACM |
746 | } |
747 | ||
f1dfa0b1 ACM |
748 | static inline bool elf_sym__is_object(const GElf_Sym *sym) |
749 | { | |
750 | return elf_sym__type(sym) == STT_OBJECT && | |
751 | sym->st_name != 0 && | |
752 | sym->st_shndx != SHN_UNDEF; | |
753 | } | |
754 | ||
6cfcc53e MG |
755 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
756 | { | |
757 | return elf_sym__type(sym) == STT_NOTYPE && | |
758 | sym->st_name != 0 && | |
759 | sym->st_shndx != SHN_UNDEF && | |
760 | sym->st_shndx != SHN_ABS; | |
761 | } | |
762 | ||
763 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, | |
764 | const Elf_Data *secstrs) | |
765 | { | |
766 | return secstrs->d_buf + shdr->sh_name; | |
767 | } | |
768 | ||
769 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, | |
770 | const Elf_Data *secstrs) | |
771 | { | |
772 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; | |
773 | } | |
774 | ||
f1dfa0b1 ACM |
775 | static inline bool elf_sec__is_data(const GElf_Shdr *shdr, |
776 | const Elf_Data *secstrs) | |
777 | { | |
778 | return strstr(elf_sec__name(shdr, secstrs), "data") != NULL; | |
779 | } | |
780 | ||
a2928c42 ACM |
781 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
782 | const Elf_Data *symstrs) | |
783 | { | |
784 | return symstrs->d_buf + sym->st_name; | |
785 | } | |
786 | ||
787 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, | |
788 | GElf_Shdr *shp, const char *name, | |
83a0944f | 789 | size_t *idx) |
a2928c42 ACM |
790 | { |
791 | Elf_Scn *sec = NULL; | |
792 | size_t cnt = 1; | |
793 | ||
794 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
795 | char *str; | |
796 | ||
797 | gelf_getshdr(sec, shp); | |
798 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); | |
799 | if (!strcmp(name, str)) { | |
83a0944f IM |
800 | if (idx) |
801 | *idx = cnt; | |
a2928c42 ACM |
802 | break; |
803 | } | |
804 | ++cnt; | |
805 | } | |
806 | ||
807 | return sec; | |
808 | } | |
809 | ||
8ce998d6 ACM |
810 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
811 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ | |
812 | idx < nr_entries; \ | |
813 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) | |
814 | ||
815 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ | |
816 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ | |
817 | idx < nr_entries; \ | |
818 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) | |
819 | ||
a25e46c4 ACM |
820 | /* |
821 | * We need to check if we have a .dynsym, so that we can handle the | |
822 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it | |
823 | * .dynsym or .symtab). | |
824 | * And always look at the original dso, not at debuginfo packages, that | |
825 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). | |
826 | */ | |
82164161 ACM |
827 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
828 | symbol_filter_t filter) | |
8ce998d6 ACM |
829 | { |
830 | uint32_t nr_rel_entries, idx; | |
831 | GElf_Sym sym; | |
9cffa8d5 | 832 | u64 plt_offset; |
8ce998d6 ACM |
833 | GElf_Shdr shdr_plt; |
834 | struct symbol *f; | |
a25e46c4 | 835 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
8ce998d6 | 836 | Elf_Data *reldata, *syms, *symstrs; |
a25e46c4 ACM |
837 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
838 | size_t dynsym_idx; | |
839 | GElf_Ehdr ehdr; | |
8ce998d6 | 840 | char sympltname[1024]; |
a25e46c4 ACM |
841 | Elf *elf; |
842 | int nr = 0, symidx, fd, err = 0; | |
ec5761ea | 843 | char name[PATH_MAX]; |
a25e46c4 | 844 | |
ec5761ea DA |
845 | snprintf(name, sizeof(name), "%s%s", |
846 | symbol_conf.symfs, self->long_name); | |
847 | fd = open(name, O_RDONLY); | |
a25e46c4 ACM |
848 | if (fd < 0) |
849 | goto out; | |
850 | ||
84087126 | 851 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a25e46c4 ACM |
852 | if (elf == NULL) |
853 | goto out_close; | |
854 | ||
855 | if (gelf_getehdr(elf, &ehdr) == NULL) | |
856 | goto out_elf_end; | |
857 | ||
858 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, | |
859 | ".dynsym", &dynsym_idx); | |
860 | if (scn_dynsym == NULL) | |
861 | goto out_elf_end; | |
8ce998d6 | 862 | |
a25e46c4 | 863 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
864 | ".rela.plt", NULL); |
865 | if (scn_plt_rel == NULL) { | |
a25e46c4 | 866 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
867 | ".rel.plt", NULL); |
868 | if (scn_plt_rel == NULL) | |
a25e46c4 | 869 | goto out_elf_end; |
8ce998d6 ACM |
870 | } |
871 | ||
a25e46c4 ACM |
872 | err = -1; |
873 | ||
8ce998d6 | 874 | if (shdr_rel_plt.sh_link != dynsym_idx) |
a25e46c4 | 875 | goto out_elf_end; |
8ce998d6 | 876 | |
a25e46c4 ACM |
877 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
878 | goto out_elf_end; | |
8ce998d6 ACM |
879 | |
880 | /* | |
83a0944f | 881 | * Fetch the relocation section to find the idxes to the GOT |
8ce998d6 ACM |
882 | * and the symbols in the .dynsym they refer to. |
883 | */ | |
884 | reldata = elf_getdata(scn_plt_rel, NULL); | |
885 | if (reldata == NULL) | |
a25e46c4 | 886 | goto out_elf_end; |
8ce998d6 ACM |
887 | |
888 | syms = elf_getdata(scn_dynsym, NULL); | |
889 | if (syms == NULL) | |
a25e46c4 | 890 | goto out_elf_end; |
8ce998d6 | 891 | |
a25e46c4 | 892 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
8ce998d6 | 893 | if (scn_symstrs == NULL) |
a25e46c4 | 894 | goto out_elf_end; |
8ce998d6 ACM |
895 | |
896 | symstrs = elf_getdata(scn_symstrs, NULL); | |
897 | if (symstrs == NULL) | |
a25e46c4 | 898 | goto out_elf_end; |
8ce998d6 ACM |
899 | |
900 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; | |
901 | plt_offset = shdr_plt.sh_offset; | |
902 | ||
903 | if (shdr_rel_plt.sh_type == SHT_RELA) { | |
904 | GElf_Rela pos_mem, *pos; | |
905 | ||
906 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, | |
907 | nr_rel_entries) { | |
908 | symidx = GELF_R_SYM(pos->r_info); | |
909 | plt_offset += shdr_plt.sh_entsize; | |
910 | gelf_getsym(syms, symidx, &sym); | |
911 | snprintf(sympltname, sizeof(sympltname), | |
912 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
913 | ||
914 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
c408fedf | 915 | STB_GLOBAL, sympltname); |
8ce998d6 | 916 | if (!f) |
a25e46c4 | 917 | goto out_elf_end; |
8ce998d6 | 918 | |
82164161 ACM |
919 | if (filter && filter(map, f)) |
920 | symbol__delete(f); | |
921 | else { | |
6a4694a4 | 922 | symbols__insert(&self->symbols[map->type], f); |
82164161 ACM |
923 | ++nr; |
924 | } | |
8ce998d6 ACM |
925 | } |
926 | } else if (shdr_rel_plt.sh_type == SHT_REL) { | |
927 | GElf_Rel pos_mem, *pos; | |
928 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, | |
929 | nr_rel_entries) { | |
930 | symidx = GELF_R_SYM(pos->r_info); | |
931 | plt_offset += shdr_plt.sh_entsize; | |
932 | gelf_getsym(syms, symidx, &sym); | |
933 | snprintf(sympltname, sizeof(sympltname), | |
934 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
935 | ||
936 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
c408fedf | 937 | STB_GLOBAL, sympltname); |
8ce998d6 | 938 | if (!f) |
a25e46c4 | 939 | goto out_elf_end; |
8ce998d6 | 940 | |
82164161 ACM |
941 | if (filter && filter(map, f)) |
942 | symbol__delete(f); | |
943 | else { | |
6a4694a4 | 944 | symbols__insert(&self->symbols[map->type], f); |
82164161 ACM |
945 | ++nr; |
946 | } | |
8ce998d6 | 947 | } |
8ce998d6 ACM |
948 | } |
949 | ||
a25e46c4 ACM |
950 | err = 0; |
951 | out_elf_end: | |
952 | elf_end(elf); | |
953 | out_close: | |
954 | close(fd); | |
955 | ||
956 | if (err == 0) | |
957 | return nr; | |
958 | out: | |
fe2197b8 ACM |
959 | pr_debug("%s: problems reading %s PLT info.\n", |
960 | __func__, self->long_name); | |
a25e46c4 | 961 | return 0; |
8ce998d6 ACM |
962 | } |
963 | ||
d45868d3 ACM |
964 | static bool elf_sym__is_a(GElf_Sym *self, enum map_type type) |
965 | { | |
966 | switch (type) { | |
967 | case MAP__FUNCTION: | |
968 | return elf_sym__is_function(self); | |
f1dfa0b1 ACM |
969 | case MAP__VARIABLE: |
970 | return elf_sym__is_object(self); | |
d45868d3 ACM |
971 | default: |
972 | return false; | |
973 | } | |
974 | } | |
975 | ||
976 | static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type) | |
977 | { | |
978 | switch (type) { | |
979 | case MAP__FUNCTION: | |
980 | return elf_sec__is_text(self, secstrs); | |
f1dfa0b1 ACM |
981 | case MAP__VARIABLE: |
982 | return elf_sec__is_data(self, secstrs); | |
d45868d3 ACM |
983 | default: |
984 | return false; | |
985 | } | |
986 | } | |
987 | ||
70c3856b EM |
988 | static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr) |
989 | { | |
990 | Elf_Scn *sec = NULL; | |
991 | GElf_Shdr shdr; | |
992 | size_t cnt = 1; | |
993 | ||
994 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
995 | gelf_getshdr(sec, &shdr); | |
996 | ||
997 | if ((addr >= shdr.sh_addr) && | |
998 | (addr < (shdr.sh_addr + shdr.sh_size))) | |
999 | return cnt; | |
1000 | ||
1001 | ++cnt; | |
1002 | } | |
1003 | ||
1004 | return -1; | |
1005 | } | |
1006 | ||
9de89fe7 | 1007 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
6da80ce8 DM |
1008 | int fd, symbol_filter_t filter, int kmodule, |
1009 | int want_symtab) | |
a2928c42 | 1010 | { |
9de89fe7 | 1011 | struct kmap *kmap = self->kernel ? map__kmap(map) : NULL; |
2e538c4a ACM |
1012 | struct map *curr_map = map; |
1013 | struct dso *curr_dso = self; | |
6cfcc53e | 1014 | Elf_Data *symstrs, *secstrs; |
a2928c42 ACM |
1015 | uint32_t nr_syms; |
1016 | int err = -1; | |
83a0944f | 1017 | uint32_t idx; |
a2928c42 | 1018 | GElf_Ehdr ehdr; |
70c3856b EM |
1019 | GElf_Shdr shdr, opdshdr; |
1020 | Elf_Data *syms, *opddata = NULL; | |
a2928c42 | 1021 | GElf_Sym sym; |
70c3856b | 1022 | Elf_Scn *sec, *sec_strndx, *opdsec; |
a2928c42 | 1023 | Elf *elf; |
439d473b | 1024 | int nr = 0; |
70c3856b | 1025 | size_t opdidx = 0; |
a2928c42 | 1026 | |
84087126 | 1027 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a2928c42 | 1028 | if (elf == NULL) { |
8b1389ef | 1029 | pr_debug("%s: cannot read %s ELF file.\n", __func__, name); |
a2928c42 ACM |
1030 | goto out_close; |
1031 | } | |
1032 | ||
1033 | if (gelf_getehdr(elf, &ehdr) == NULL) { | |
8b1389ef | 1034 | pr_debug("%s: cannot get elf header.\n", __func__); |
a2928c42 ACM |
1035 | goto out_elf_end; |
1036 | } | |
1037 | ||
6da80ce8 | 1038 | /* Always reject images with a mismatched build-id: */ |
21916c38 DM |
1039 | if (self->has_build_id) { |
1040 | u8 build_id[BUILD_ID_SIZE]; | |
1041 | ||
1042 | if (elf_read_build_id(elf, build_id, | |
1043 | BUILD_ID_SIZE) != BUILD_ID_SIZE) | |
1044 | goto out_elf_end; | |
1045 | ||
1046 | if (!dso__build_id_equal(self, build_id)) | |
1047 | goto out_elf_end; | |
1048 | } | |
1049 | ||
a2928c42 | 1050 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
8ce998d6 | 1051 | if (sec == NULL) { |
6da80ce8 DM |
1052 | if (want_symtab) |
1053 | goto out_elf_end; | |
1054 | ||
a25e46c4 ACM |
1055 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
1056 | if (sec == NULL) | |
8ce998d6 | 1057 | goto out_elf_end; |
8ce998d6 | 1058 | } |
a2928c42 | 1059 | |
70c3856b EM |
1060 | opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx); |
1061 | if (opdsec) | |
1062 | opddata = elf_rawdata(opdsec, NULL); | |
1063 | ||
a2928c42 ACM |
1064 | syms = elf_getdata(sec, NULL); |
1065 | if (syms == NULL) | |
1066 | goto out_elf_end; | |
1067 | ||
1068 | sec = elf_getscn(elf, shdr.sh_link); | |
1069 | if (sec == NULL) | |
1070 | goto out_elf_end; | |
1071 | ||
1072 | symstrs = elf_getdata(sec, NULL); | |
1073 | if (symstrs == NULL) | |
1074 | goto out_elf_end; | |
1075 | ||
6cfcc53e MG |
1076 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
1077 | if (sec_strndx == NULL) | |
1078 | goto out_elf_end; | |
1079 | ||
1080 | secstrs = elf_getdata(sec_strndx, NULL); | |
9b30a26b | 1081 | if (secstrs == NULL) |
6cfcc53e MG |
1082 | goto out_elf_end; |
1083 | ||
a2928c42 ACM |
1084 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
1085 | ||
e9fbc9dc | 1086 | memset(&sym, 0, sizeof(sym)); |
a1645ce1 | 1087 | if (self->kernel == DSO_TYPE_USER) { |
d20ff6bd | 1088 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
30d7a77d ACM |
1089 | elf_section_by_name(elf, &ehdr, &shdr, |
1090 | ".gnu.prelink_undo", | |
1091 | NULL) != NULL); | |
d20ff6bd MG |
1092 | } else self->adjust_symbols = 0; |
1093 | ||
83a0944f | 1094 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
a2928c42 | 1095 | struct symbol *f; |
56b03f3c | 1096 | const char *elf_name = elf_sym__name(&sym, symstrs); |
2e538c4a | 1097 | char *demangled = NULL; |
6cfcc53e MG |
1098 | int is_label = elf_sym__is_label(&sym); |
1099 | const char *section_name; | |
a2928c42 | 1100 | |
9de89fe7 ACM |
1101 | if (kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name && |
1102 | strcmp(elf_name, kmap->ref_reloc_sym->name) == 0) | |
1103 | kmap->ref_reloc_sym->unrelocated_addr = sym.st_value; | |
56b03f3c | 1104 | |
d45868d3 | 1105 | if (!is_label && !elf_sym__is_a(&sym, map->type)) |
a2928c42 ACM |
1106 | continue; |
1107 | ||
696b97a5 DM |
1108 | /* Reject ARM ELF "mapping symbols": these aren't unique and |
1109 | * don't identify functions, so will confuse the profile | |
1110 | * output: */ | |
1111 | if (ehdr.e_machine == EM_ARM) { | |
1112 | if (!strcmp(elf_name, "$a") || | |
1113 | !strcmp(elf_name, "$d") || | |
1114 | !strcmp(elf_name, "$t")) | |
1115 | continue; | |
1116 | } | |
1117 | ||
70c3856b EM |
1118 | if (opdsec && sym.st_shndx == opdidx) { |
1119 | u32 offset = sym.st_value - opdshdr.sh_addr; | |
1120 | u64 *opd = opddata->d_buf + offset; | |
1121 | sym.st_value = *opd; | |
1122 | sym.st_shndx = elf_addr_to_index(elf, sym.st_value); | |
1123 | } | |
1124 | ||
a2928c42 ACM |
1125 | sec = elf_getscn(elf, sym.st_shndx); |
1126 | if (!sec) | |
1127 | goto out_elf_end; | |
1128 | ||
1129 | gelf_getshdr(sec, &shdr); | |
6cfcc53e | 1130 | |
d45868d3 | 1131 | if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type)) |
6cfcc53e MG |
1132 | continue; |
1133 | ||
1134 | section_name = elf_sec__name(&shdr, secstrs); | |
0b73da3f | 1135 | |
a1645ce1 | 1136 | if (self->kernel != DSO_TYPE_USER || kmodule) { |
2e538c4a ACM |
1137 | char dso_name[PATH_MAX]; |
1138 | ||
1139 | if (strcmp(section_name, | |
b63be8d7 ACM |
1140 | (curr_dso->short_name + |
1141 | self->short_name_len)) == 0) | |
2e538c4a ACM |
1142 | goto new_symbol; |
1143 | ||
1144 | if (strcmp(section_name, ".text") == 0) { | |
1145 | curr_map = map; | |
1146 | curr_dso = self; | |
1147 | goto new_symbol; | |
1148 | } | |
1149 | ||
1150 | snprintf(dso_name, sizeof(dso_name), | |
1151 | "%s%s", self->short_name, section_name); | |
1152 | ||
9de89fe7 | 1153 | curr_map = map_groups__find_by_name(kmap->kmaps, map->type, dso_name); |
2e538c4a ACM |
1154 | if (curr_map == NULL) { |
1155 | u64 start = sym.st_value; | |
1156 | ||
1157 | if (kmodule) | |
1158 | start += map->start + shdr.sh_offset; | |
1159 | ||
00a192b3 | 1160 | curr_dso = dso__new(dso_name); |
2e538c4a ACM |
1161 | if (curr_dso == NULL) |
1162 | goto out_elf_end; | |
a1645ce1 | 1163 | curr_dso->kernel = self->kernel; |
3610583c | 1164 | curr_map = map__new2(start, curr_dso, |
6275ce2d | 1165 | map->type); |
2e538c4a ACM |
1166 | if (curr_map == NULL) { |
1167 | dso__delete(curr_dso); | |
1168 | goto out_elf_end; | |
1169 | } | |
ed52ce2e ACM |
1170 | curr_map->map_ip = identity__map_ip; |
1171 | curr_map->unmap_ip = identity__map_ip; | |
b0a9ab62 | 1172 | curr_dso->origin = self->origin; |
9de89fe7 | 1173 | map_groups__insert(kmap->kmaps, curr_map); |
a1645ce1 | 1174 | dsos__add(&self->node, curr_dso); |
6275ce2d | 1175 | dso__set_loaded(curr_dso, map->type); |
2e538c4a ACM |
1176 | } else |
1177 | curr_dso = curr_map->dso; | |
1178 | ||
1179 | goto new_symbol; | |
af427bf5 ACM |
1180 | } |
1181 | ||
2e538c4a | 1182 | if (curr_dso->adjust_symbols) { |
29a9f66d ACM |
1183 | pr_debug4("%s: adjusting symbol: st_value: %#Lx " |
1184 | "sh_addr: %#Lx sh_offset: %#Lx\n", __func__, | |
1185 | (u64)sym.st_value, (u64)shdr.sh_addr, | |
1186 | (u64)shdr.sh_offset); | |
f5812a7a | 1187 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
af427bf5 | 1188 | } |
28ac909b ACM |
1189 | /* |
1190 | * We need to figure out if the object was created from C++ sources | |
1191 | * DWARF DW_compile_unit has this, but we don't always have access | |
1192 | * to it... | |
1193 | */ | |
83a0944f | 1194 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
28ac909b | 1195 | if (demangled != NULL) |
83a0944f | 1196 | elf_name = demangled; |
2e538c4a | 1197 | new_symbol: |
c408fedf ACM |
1198 | f = symbol__new(sym.st_value, sym.st_size, |
1199 | GELF_ST_BIND(sym.st_info), elf_name); | |
28ac909b | 1200 | free(demangled); |
a2928c42 ACM |
1201 | if (!f) |
1202 | goto out_elf_end; | |
1203 | ||
2e538c4a | 1204 | if (filter && filter(curr_map, f)) |
00a192b3 | 1205 | symbol__delete(f); |
69ee69f6 | 1206 | else { |
6a4694a4 | 1207 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
69ee69f6 ACM |
1208 | nr++; |
1209 | } | |
a2928c42 ACM |
1210 | } |
1211 | ||
2e538c4a ACM |
1212 | /* |
1213 | * For misannotated, zeroed, ASM function sizes. | |
1214 | */ | |
6275ce2d | 1215 | if (nr > 0) { |
6a4694a4 | 1216 | symbols__fixup_end(&self->symbols[map->type]); |
6275ce2d ACM |
1217 | if (kmap) { |
1218 | /* | |
1219 | * We need to fixup this here too because we create new | |
1220 | * maps here, for things like vsyscall sections. | |
1221 | */ | |
1222 | __map_groups__fixup_end(kmap->kmaps, map->type); | |
1223 | } | |
1224 | } | |
a2928c42 ACM |
1225 | err = nr; |
1226 | out_elf_end: | |
1227 | elf_end(elf); | |
1228 | out_close: | |
1229 | return err; | |
1230 | } | |
1231 | ||
78075caa ACM |
1232 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
1233 | { | |
1234 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; | |
1235 | } | |
1236 | ||
a1645ce1 | 1237 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) |
57f395a7 | 1238 | { |
e30a3d12 | 1239 | bool have_build_id = false; |
57f395a7 FW |
1240 | struct dso *pos; |
1241 | ||
6122e4e4 ACM |
1242 | list_for_each_entry(pos, head, node) { |
1243 | if (with_hits && !pos->hit) | |
1244 | continue; | |
f6e1467d ACM |
1245 | if (pos->has_build_id) { |
1246 | have_build_id = true; | |
1247 | continue; | |
1248 | } | |
e30a3d12 ACM |
1249 | if (filename__read_build_id(pos->long_name, pos->build_id, |
1250 | sizeof(pos->build_id)) > 0) { | |
1251 | have_build_id = true; | |
1252 | pos->has_build_id = true; | |
1253 | } | |
6122e4e4 | 1254 | } |
57f395a7 | 1255 | |
e30a3d12 | 1256 | return have_build_id; |
57f395a7 FW |
1257 | } |
1258 | ||
fd7a346e ACM |
1259 | /* |
1260 | * Align offset to 4 bytes as needed for note name and descriptor data. | |
1261 | */ | |
1262 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) | |
1263 | ||
21916c38 | 1264 | static int elf_read_build_id(Elf *elf, void *bf, size_t size) |
4d1e00a8 | 1265 | { |
21916c38 | 1266 | int err = -1; |
4d1e00a8 ACM |
1267 | GElf_Ehdr ehdr; |
1268 | GElf_Shdr shdr; | |
fd7a346e | 1269 | Elf_Data *data; |
4d1e00a8 | 1270 | Elf_Scn *sec; |
e57cfcda | 1271 | Elf_Kind ek; |
fd7a346e | 1272 | void *ptr; |
4d1e00a8 | 1273 | |
2643ce11 ACM |
1274 | if (size < BUILD_ID_SIZE) |
1275 | goto out; | |
1276 | ||
e57cfcda PE |
1277 | ek = elf_kind(elf); |
1278 | if (ek != ELF_K_ELF) | |
21916c38 | 1279 | goto out; |
e57cfcda | 1280 | |
4d1e00a8 | 1281 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
6beba7ad | 1282 | pr_err("%s: cannot get elf header.\n", __func__); |
21916c38 | 1283 | goto out; |
4d1e00a8 ACM |
1284 | } |
1285 | ||
2643ce11 ACM |
1286 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
1287 | ".note.gnu.build-id", NULL); | |
fd7a346e ACM |
1288 | if (sec == NULL) { |
1289 | sec = elf_section_by_name(elf, &ehdr, &shdr, | |
1290 | ".notes", NULL); | |
1291 | if (sec == NULL) | |
21916c38 | 1292 | goto out; |
fd7a346e | 1293 | } |
4d1e00a8 | 1294 | |
fd7a346e ACM |
1295 | data = elf_getdata(sec, NULL); |
1296 | if (data == NULL) | |
21916c38 | 1297 | goto out; |
fd7a346e ACM |
1298 | |
1299 | ptr = data->d_buf; | |
1300 | while (ptr < (data->d_buf + data->d_size)) { | |
1301 | GElf_Nhdr *nhdr = ptr; | |
1302 | int namesz = NOTE_ALIGN(nhdr->n_namesz), | |
1303 | descsz = NOTE_ALIGN(nhdr->n_descsz); | |
1304 | const char *name; | |
1305 | ||
1306 | ptr += sizeof(*nhdr); | |
1307 | name = ptr; | |
1308 | ptr += namesz; | |
1309 | if (nhdr->n_type == NT_GNU_BUILD_ID && | |
1310 | nhdr->n_namesz == sizeof("GNU")) { | |
1311 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { | |
1312 | memcpy(bf, ptr, BUILD_ID_SIZE); | |
1313 | err = BUILD_ID_SIZE; | |
1314 | break; | |
1315 | } | |
1316 | } | |
1317 | ptr += descsz; | |
1318 | } | |
21916c38 DM |
1319 | |
1320 | out: | |
1321 | return err; | |
1322 | } | |
1323 | ||
1324 | int filename__read_build_id(const char *filename, void *bf, size_t size) | |
1325 | { | |
1326 | int fd, err = -1; | |
1327 | Elf *elf; | |
1328 | ||
1329 | if (size < BUILD_ID_SIZE) | |
1330 | goto out; | |
1331 | ||
1332 | fd = open(filename, O_RDONLY); | |
1333 | if (fd < 0) | |
1334 | goto out; | |
1335 | ||
1336 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); | |
1337 | if (elf == NULL) { | |
1338 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); | |
1339 | goto out_close; | |
1340 | } | |
1341 | ||
1342 | err = elf_read_build_id(elf, bf, size); | |
1343 | ||
2643ce11 ACM |
1344 | elf_end(elf); |
1345 | out_close: | |
1346 | close(fd); | |
1347 | out: | |
1348 | return err; | |
1349 | } | |
1350 | ||
f1617b40 ACM |
1351 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
1352 | { | |
1353 | int fd, err = -1; | |
1354 | ||
1355 | if (size < BUILD_ID_SIZE) | |
1356 | goto out; | |
1357 | ||
1358 | fd = open(filename, O_RDONLY); | |
1359 | if (fd < 0) | |
1360 | goto out; | |
1361 | ||
1362 | while (1) { | |
1363 | char bf[BUFSIZ]; | |
1364 | GElf_Nhdr nhdr; | |
1365 | int namesz, descsz; | |
1366 | ||
1367 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) | |
1368 | break; | |
1369 | ||
fd7a346e ACM |
1370 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
1371 | descsz = NOTE_ALIGN(nhdr.n_descsz); | |
f1617b40 ACM |
1372 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
1373 | nhdr.n_namesz == sizeof("GNU")) { | |
1374 | if (read(fd, bf, namesz) != namesz) | |
1375 | break; | |
1376 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { | |
1377 | if (read(fd, build_id, | |
1378 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { | |
1379 | err = 0; | |
1380 | break; | |
1381 | } | |
1382 | } else if (read(fd, bf, descsz) != descsz) | |
1383 | break; | |
1384 | } else { | |
1385 | int n = namesz + descsz; | |
1386 | if (read(fd, bf, n) != n) | |
1387 | break; | |
1388 | } | |
1389 | } | |
1390 | close(fd); | |
1391 | out: | |
1392 | return err; | |
1393 | } | |
1394 | ||
94cb9e38 ACM |
1395 | char dso__symtab_origin(const struct dso *self) |
1396 | { | |
1397 | static const char origin[] = { | |
1398 | [DSO__ORIG_KERNEL] = 'k', | |
1399 | [DSO__ORIG_JAVA_JIT] = 'j', | |
4cf40131 | 1400 | [DSO__ORIG_BUILD_ID_CACHE] = 'B', |
94cb9e38 ACM |
1401 | [DSO__ORIG_FEDORA] = 'f', |
1402 | [DSO__ORIG_UBUNTU] = 'u', | |
1403 | [DSO__ORIG_BUILDID] = 'b', | |
1404 | [DSO__ORIG_DSO] = 'd', | |
439d473b | 1405 | [DSO__ORIG_KMODULE] = 'K', |
a1645ce1 ZY |
1406 | [DSO__ORIG_GUEST_KERNEL] = 'g', |
1407 | [DSO__ORIG_GUEST_KMODULE] = 'G', | |
94cb9e38 ACM |
1408 | }; |
1409 | ||
1410 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) | |
1411 | return '!'; | |
1412 | return origin[self->origin]; | |
1413 | } | |
1414 | ||
9de89fe7 | 1415 | int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) |
a2928c42 | 1416 | { |
4d1e00a8 | 1417 | int size = PATH_MAX; |
c338aee8 | 1418 | char *name; |
a2928c42 ACM |
1419 | int ret = -1; |
1420 | int fd; | |
23346f21 | 1421 | struct machine *machine; |
a1645ce1 | 1422 | const char *root_dir; |
6da80ce8 | 1423 | int want_symtab; |
a2928c42 | 1424 | |
3610583c | 1425 | dso__set_loaded(self, map->type); |
66bd8424 | 1426 | |
a1645ce1 | 1427 | if (self->kernel == DSO_TYPE_KERNEL) |
9de89fe7 | 1428 | return dso__load_kernel_sym(self, map, filter); |
a1645ce1 ZY |
1429 | else if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
1430 | return dso__load_guest_kernel_sym(self, map, filter); | |
1431 | ||
23346f21 ACM |
1432 | if (map->groups && map->groups->machine) |
1433 | machine = map->groups->machine; | |
a1645ce1 | 1434 | else |
23346f21 | 1435 | machine = NULL; |
c338aee8 ACM |
1436 | |
1437 | name = malloc(size); | |
a2928c42 ACM |
1438 | if (!name) |
1439 | return -1; | |
1440 | ||
30d7a77d | 1441 | self->adjust_symbols = 0; |
f5812a7a | 1442 | |
94cb9e38 | 1443 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
6beba7ad | 1444 | ret = dso__load_perf_map(self, map, filter); |
94cb9e38 ACM |
1445 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
1446 | DSO__ORIG_NOT_FOUND; | |
1447 | return ret; | |
1448 | } | |
1449 | ||
6da80ce8 DM |
1450 | /* Iterate over candidate debug images. |
1451 | * On the first pass, only load images if they have a full symtab. | |
1452 | * Failing that, do a second pass where we accept .dynsym also | |
1453 | */ | |
1454 | for (self->origin = DSO__ORIG_BUILD_ID_CACHE, want_symtab = 1; | |
1455 | self->origin != DSO__ORIG_NOT_FOUND; | |
1456 | self->origin++) { | |
94cb9e38 | 1457 | switch (self->origin) { |
6da80ce8 | 1458 | case DSO__ORIG_BUILD_ID_CACHE: |
ec5761ea DA |
1459 | /* skip the locally configured cache if a symfs is given */ |
1460 | if (symbol_conf.symfs[0] || | |
1461 | (dso__build_id_filename(self, name, size) == NULL)) { | |
6da80ce8 | 1462 | continue; |
ec5761ea | 1463 | } |
6da80ce8 | 1464 | break; |
94cb9e38 | 1465 | case DSO__ORIG_FEDORA: |
ec5761ea DA |
1466 | snprintf(name, size, "%s/usr/lib/debug%s.debug", |
1467 | symbol_conf.symfs, self->long_name); | |
a2928c42 | 1468 | break; |
94cb9e38 | 1469 | case DSO__ORIG_UBUNTU: |
ec5761ea DA |
1470 | snprintf(name, size, "%s/usr/lib/debug%s", |
1471 | symbol_conf.symfs, self->long_name); | |
a2928c42 | 1472 | break; |
6da80ce8 DM |
1473 | case DSO__ORIG_BUILDID: { |
1474 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; | |
1475 | ||
1476 | if (!self->has_build_id) | |
1477 | continue; | |
1478 | ||
1479 | build_id__sprintf(self->build_id, | |
1480 | sizeof(self->build_id), | |
1481 | build_id_hex); | |
1482 | snprintf(name, size, | |
ec5761ea DA |
1483 | "%s/usr/lib/debug/.build-id/%.2s/%s.debug", |
1484 | symbol_conf.symfs, build_id_hex, build_id_hex + 2); | |
4d1e00a8 | 1485 | } |
6da80ce8 | 1486 | break; |
94cb9e38 | 1487 | case DSO__ORIG_DSO: |
ec5761ea DA |
1488 | snprintf(name, size, "%s%s", |
1489 | symbol_conf.symfs, self->long_name); | |
a2928c42 | 1490 | break; |
a1645ce1 | 1491 | case DSO__ORIG_GUEST_KMODULE: |
23346f21 ACM |
1492 | if (map->groups && map->groups->machine) |
1493 | root_dir = map->groups->machine->root_dir; | |
a1645ce1 ZY |
1494 | else |
1495 | root_dir = ""; | |
ec5761ea DA |
1496 | snprintf(name, size, "%s%s%s", symbol_conf.symfs, |
1497 | root_dir, self->long_name); | |
1498 | break; | |
1499 | ||
1500 | case DSO__ORIG_KMODULE: | |
1501 | snprintf(name, size, "%s%s", symbol_conf.symfs, | |
1502 | self->long_name); | |
a1645ce1 | 1503 | break; |
a2928c42 ACM |
1504 | |
1505 | default: | |
6da80ce8 DM |
1506 | /* |
1507 | * If we wanted a full symtab but no image had one, | |
1508 | * relax our requirements and repeat the search. | |
1509 | */ | |
1510 | if (want_symtab) { | |
1511 | want_symtab = 0; | |
1512 | self->origin = DSO__ORIG_BUILD_ID_CACHE; | |
1513 | } else | |
1514 | continue; | |
a2928c42 | 1515 | } |
6da80ce8 DM |
1516 | |
1517 | /* Name is now the name of the next image to try */ | |
a2928c42 | 1518 | fd = open(name, O_RDONLY); |
6da80ce8 DM |
1519 | if (fd < 0) |
1520 | continue; | |
a2928c42 | 1521 | |
6da80ce8 DM |
1522 | ret = dso__load_sym(self, map, name, fd, filter, 0, |
1523 | want_symtab); | |
1524 | close(fd); | |
a2928c42 | 1525 | |
6da80ce8 DM |
1526 | /* |
1527 | * Some people seem to have debuginfo files _WITHOUT_ debug | |
1528 | * info!?!? | |
1529 | */ | |
1530 | if (!ret) | |
1531 | continue; | |
a2928c42 | 1532 | |
6da80ce8 DM |
1533 | if (ret > 0) { |
1534 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); | |
1535 | if (nr_plt > 0) | |
1536 | ret += nr_plt; | |
1537 | break; | |
1538 | } | |
a25e46c4 | 1539 | } |
6da80ce8 | 1540 | |
a2928c42 | 1541 | free(name); |
1340e6bb ACM |
1542 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
1543 | return 0; | |
a2928c42 ACM |
1544 | return ret; |
1545 | } | |
1546 | ||
79406cd7 ACM |
1547 | struct map *map_groups__find_by_name(struct map_groups *self, |
1548 | enum map_type type, const char *name) | |
439d473b ACM |
1549 | { |
1550 | struct rb_node *nd; | |
1551 | ||
79406cd7 | 1552 | for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { |
439d473b ACM |
1553 | struct map *map = rb_entry(nd, struct map, rb_node); |
1554 | ||
b7cece76 | 1555 | if (map->dso && strcmp(map->dso->short_name, name) == 0) |
439d473b ACM |
1556 | return map; |
1557 | } | |
1558 | ||
1559 | return NULL; | |
1560 | } | |
1561 | ||
a1645ce1 ZY |
1562 | static int dso__kernel_module_get_build_id(struct dso *self, |
1563 | const char *root_dir) | |
b7cece76 ACM |
1564 | { |
1565 | char filename[PATH_MAX]; | |
1566 | /* | |
1567 | * kernel module short names are of the form "[module]" and | |
1568 | * we need just "module" here. | |
1569 | */ | |
1570 | const char *name = self->short_name + 1; | |
1571 | ||
1572 | snprintf(filename, sizeof(filename), | |
a1645ce1 ZY |
1573 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", |
1574 | root_dir, (int)strlen(name) - 1, name); | |
b7cece76 ACM |
1575 | |
1576 | if (sysfs__read_build_id(filename, self->build_id, | |
1577 | sizeof(self->build_id)) == 0) | |
1578 | self->has_build_id = true; | |
1579 | ||
1580 | return 0; | |
1581 | } | |
1582 | ||
a1645ce1 ZY |
1583 | static int map_groups__set_modules_path_dir(struct map_groups *self, |
1584 | const char *dir_name) | |
6cfcc53e | 1585 | { |
439d473b | 1586 | struct dirent *dent; |
5aab621b | 1587 | DIR *dir = opendir(dir_name); |
74534341 | 1588 | int ret = 0; |
6cfcc53e | 1589 | |
439d473b | 1590 | if (!dir) { |
5aab621b | 1591 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); |
439d473b ACM |
1592 | return -1; |
1593 | } | |
6cfcc53e | 1594 | |
439d473b ACM |
1595 | while ((dent = readdir(dir)) != NULL) { |
1596 | char path[PATH_MAX]; | |
a1645ce1 ZY |
1597 | struct stat st; |
1598 | ||
1599 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
1600 | sprintf(path, "%s/%s", dir_name, dent->d_name); | |
1601 | if (stat(path, &st)) | |
1602 | continue; | |
439d473b | 1603 | |
a1645ce1 | 1604 | if (S_ISDIR(st.st_mode)) { |
439d473b ACM |
1605 | if (!strcmp(dent->d_name, ".") || |
1606 | !strcmp(dent->d_name, "..")) | |
1607 | continue; | |
1608 | ||
1609 | snprintf(path, sizeof(path), "%s/%s", | |
5aab621b | 1610 | dir_name, dent->d_name); |
74534341 GJ |
1611 | ret = map_groups__set_modules_path_dir(self, path); |
1612 | if (ret < 0) | |
1613 | goto out; | |
439d473b ACM |
1614 | } else { |
1615 | char *dot = strrchr(dent->d_name, '.'), | |
1616 | dso_name[PATH_MAX]; | |
1617 | struct map *map; | |
cfc10d3b | 1618 | char *long_name; |
439d473b ACM |
1619 | |
1620 | if (dot == NULL || strcmp(dot, ".ko")) | |
1621 | continue; | |
1622 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
1623 | (int)(dot - dent->d_name), dent->d_name); | |
1624 | ||
a2a99e8e | 1625 | strxfrchar(dso_name, '-', '_'); |
9de89fe7 | 1626 | map = map_groups__find_by_name(self, MAP__FUNCTION, dso_name); |
439d473b ACM |
1627 | if (map == NULL) |
1628 | continue; | |
1629 | ||
1630 | snprintf(path, sizeof(path), "%s/%s", | |
5aab621b | 1631 | dir_name, dent->d_name); |
439d473b | 1632 | |
cfc10d3b | 1633 | long_name = strdup(path); |
74534341 GJ |
1634 | if (long_name == NULL) { |
1635 | ret = -1; | |
1636 | goto out; | |
1637 | } | |
cfc10d3b | 1638 | dso__set_long_name(map->dso, long_name); |
6e406257 | 1639 | map->dso->lname_alloc = 1; |
a1645ce1 | 1640 | dso__kernel_module_get_build_id(map->dso, ""); |
439d473b | 1641 | } |
439d473b | 1642 | } |
6cfcc53e | 1643 | |
74534341 | 1644 | out: |
439d473b | 1645 | closedir(dir); |
74534341 | 1646 | return ret; |
439d473b | 1647 | } |
6cfcc53e | 1648 | |
a1645ce1 | 1649 | static char *get_kernel_version(const char *root_dir) |
439d473b | 1650 | { |
a1645ce1 ZY |
1651 | char version[PATH_MAX]; |
1652 | FILE *file; | |
1653 | char *name, *tmp; | |
1654 | const char *prefix = "Linux version "; | |
1655 | ||
1656 | sprintf(version, "%s/proc/version", root_dir); | |
1657 | file = fopen(version, "r"); | |
1658 | if (!file) | |
1659 | return NULL; | |
1660 | ||
1661 | version[0] = '\0'; | |
1662 | tmp = fgets(version, sizeof(version), file); | |
1663 | fclose(file); | |
1664 | ||
1665 | name = strstr(version, prefix); | |
1666 | if (!name) | |
1667 | return NULL; | |
1668 | name += strlen(prefix); | |
1669 | tmp = strchr(name, ' '); | |
1670 | if (tmp) | |
1671 | *tmp = '\0'; | |
1672 | ||
1673 | return strdup(name); | |
1674 | } | |
1675 | ||
d28c6223 | 1676 | static int machine__set_modules_path(struct machine *self) |
a1645ce1 ZY |
1677 | { |
1678 | char *version; | |
439d473b | 1679 | char modules_path[PATH_MAX]; |
6cfcc53e | 1680 | |
d28c6223 | 1681 | version = get_kernel_version(self->root_dir); |
a1645ce1 | 1682 | if (!version) |
439d473b | 1683 | return -1; |
6cfcc53e | 1684 | |
a1645ce1 | 1685 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", |
d28c6223 | 1686 | self->root_dir, version); |
a1645ce1 | 1687 | free(version); |
6cfcc53e | 1688 | |
d28c6223 | 1689 | return map_groups__set_modules_path_dir(&self->kmaps, modules_path); |
6cfcc53e MG |
1690 | } |
1691 | ||
439d473b ACM |
1692 | /* |
1693 | * Constructor variant for modules (where we know from /proc/modules where | |
1694 | * they are loaded) and for vmlinux, where only after we load all the | |
1695 | * symbols we'll know where it starts and ends. | |
1696 | */ | |
3610583c | 1697 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type) |
6cfcc53e | 1698 | { |
5aab621b ACM |
1699 | struct map *self = calloc(1, (sizeof(*self) + |
1700 | (dso->kernel ? sizeof(struct kmap) : 0))); | |
439d473b | 1701 | if (self != NULL) { |
439d473b | 1702 | /* |
afb7b4f0 | 1703 | * ->end will be filled after we load all the symbols |
439d473b | 1704 | */ |
3610583c | 1705 | map__init(self, type, start, 0, 0, dso); |
439d473b | 1706 | } |
afb7b4f0 | 1707 | |
439d473b ACM |
1708 | return self; |
1709 | } | |
1710 | ||
d28c6223 ACM |
1711 | struct map *machine__new_module(struct machine *self, u64 start, |
1712 | const char *filename) | |
b7cece76 ACM |
1713 | { |
1714 | struct map *map; | |
d28c6223 | 1715 | struct dso *dso = __dsos__findnew(&self->kernel_dsos, filename); |
b7cece76 ACM |
1716 | |
1717 | if (dso == NULL) | |
1718 | return NULL; | |
1719 | ||
1720 | map = map__new2(start, dso, MAP__FUNCTION); | |
1721 | if (map == NULL) | |
1722 | return NULL; | |
1723 | ||
d28c6223 | 1724 | if (machine__is_host(self)) |
a1645ce1 ZY |
1725 | dso->origin = DSO__ORIG_KMODULE; |
1726 | else | |
1727 | dso->origin = DSO__ORIG_GUEST_KMODULE; | |
d28c6223 | 1728 | map_groups__insert(&self->kmaps, map); |
b7cece76 ACM |
1729 | return map; |
1730 | } | |
1731 | ||
d28c6223 | 1732 | static int machine__create_modules(struct machine *self) |
439d473b ACM |
1733 | { |
1734 | char *line = NULL; | |
1735 | size_t n; | |
a1645ce1 | 1736 | FILE *file; |
439d473b | 1737 | struct map *map; |
a1645ce1 ZY |
1738 | const char *modules; |
1739 | char path[PATH_MAX]; | |
1740 | ||
d28c6223 | 1741 | if (machine__is_default_guest(self)) |
a1645ce1 ZY |
1742 | modules = symbol_conf.default_guest_modules; |
1743 | else { | |
d28c6223 | 1744 | sprintf(path, "%s/proc/modules", self->root_dir); |
a1645ce1 ZY |
1745 | modules = path; |
1746 | } | |
6cfcc53e | 1747 | |
a1645ce1 | 1748 | file = fopen(modules, "r"); |
439d473b ACM |
1749 | if (file == NULL) |
1750 | return -1; | |
6cfcc53e | 1751 | |
439d473b ACM |
1752 | while (!feof(file)) { |
1753 | char name[PATH_MAX]; | |
1754 | u64 start; | |
439d473b ACM |
1755 | char *sep; |
1756 | int line_len; | |
6cfcc53e | 1757 | |
439d473b ACM |
1758 | line_len = getline(&line, &n, file); |
1759 | if (line_len < 0) | |
1760 | break; | |
1761 | ||
1762 | if (!line) | |
1763 | goto out_failure; | |
1764 | ||
1765 | line[--line_len] = '\0'; /* \n */ | |
1766 | ||
1767 | sep = strrchr(line, 'x'); | |
1768 | if (sep == NULL) | |
1769 | continue; | |
1770 | ||
1771 | hex2u64(sep + 1, &start); | |
1772 | ||
1773 | sep = strchr(line, ' '); | |
1774 | if (sep == NULL) | |
1775 | continue; | |
1776 | ||
1777 | *sep = '\0'; | |
1778 | ||
1779 | snprintf(name, sizeof(name), "[%s]", line); | |
d28c6223 | 1780 | map = machine__new_module(self, start, name); |
b7cece76 | 1781 | if (map == NULL) |
439d473b | 1782 | goto out_delete_line; |
d28c6223 | 1783 | dso__kernel_module_get_build_id(map->dso, self->root_dir); |
6cfcc53e | 1784 | } |
439d473b ACM |
1785 | |
1786 | free(line); | |
1787 | fclose(file); | |
1788 | ||
d28c6223 | 1789 | return machine__set_modules_path(self); |
439d473b ACM |
1790 | |
1791 | out_delete_line: | |
1792 | free(line); | |
1793 | out_failure: | |
1794 | return -1; | |
6cfcc53e MG |
1795 | } |
1796 | ||
9958e1f0 | 1797 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
6beba7ad | 1798 | const char *vmlinux, symbol_filter_t filter) |
a2928c42 | 1799 | { |
fbd733b8 | 1800 | int err = -1, fd; |
ec5761ea | 1801 | char symfs_vmlinux[PATH_MAX]; |
a2928c42 | 1802 | |
ec5761ea DA |
1803 | snprintf(symfs_vmlinux, sizeof(symfs_vmlinux), "%s/%s", |
1804 | symbol_conf.symfs, vmlinux); | |
1805 | fd = open(symfs_vmlinux, O_RDONLY); | |
a2928c42 ACM |
1806 | if (fd < 0) |
1807 | return -1; | |
1808 | ||
3610583c | 1809 | dso__set_loaded(self, map->type); |
ec5761ea | 1810 | err = dso__load_sym(self, map, symfs_vmlinux, fd, filter, 0, 0); |
a2928c42 ACM |
1811 | close(fd); |
1812 | ||
3846df2e | 1813 | if (err > 0) |
ec5761ea | 1814 | pr_debug("Using %s for symbols\n", symfs_vmlinux); |
3846df2e | 1815 | |
a2928c42 ACM |
1816 | return err; |
1817 | } | |
1818 | ||
a19afe46 | 1819 | int dso__load_vmlinux_path(struct dso *self, struct map *map, |
9de89fe7 | 1820 | symbol_filter_t filter) |
a19afe46 ACM |
1821 | { |
1822 | int i, err = 0; | |
5ad90e4e | 1823 | char *filename; |
a19afe46 ACM |
1824 | |
1825 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", | |
5ad90e4e ACM |
1826 | vmlinux_path__nr_entries + 1); |
1827 | ||
1828 | filename = dso__build_id_filename(self, NULL, 0); | |
1829 | if (filename != NULL) { | |
1830 | err = dso__load_vmlinux(self, map, filename, filter); | |
1831 | if (err > 0) { | |
1832 | dso__set_long_name(self, filename); | |
1833 | goto out; | |
1834 | } | |
1835 | free(filename); | |
1836 | } | |
a19afe46 ACM |
1837 | |
1838 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { | |
9de89fe7 | 1839 | err = dso__load_vmlinux(self, map, vmlinux_path[i], filter); |
a19afe46 | 1840 | if (err > 0) { |
a19afe46 ACM |
1841 | dso__set_long_name(self, strdup(vmlinux_path[i])); |
1842 | break; | |
1843 | } | |
1844 | } | |
5ad90e4e | 1845 | out: |
a19afe46 ACM |
1846 | return err; |
1847 | } | |
1848 | ||
c338aee8 | 1849 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
9de89fe7 | 1850 | symbol_filter_t filter) |
a827c875 | 1851 | { |
cc612d81 | 1852 | int err; |
9e201442 ACM |
1853 | const char *kallsyms_filename = NULL; |
1854 | char *kallsyms_allocated_filename = NULL; | |
dc8d6ab2 | 1855 | /* |
b226a5a7 DA |
1856 | * Step 1: if the user specified a kallsyms or vmlinux filename, use |
1857 | * it and only it, reporting errors to the user if it cannot be used. | |
dc8d6ab2 ACM |
1858 | * |
1859 | * For instance, try to analyse an ARM perf.data file _without_ a | |
1860 | * build-id, or if the user specifies the wrong path to the right | |
1861 | * vmlinux file, obviously we can't fallback to another vmlinux (a | |
1862 | * x86_86 one, on the machine where analysis is being performed, say), | |
1863 | * or worse, /proc/kallsyms. | |
1864 | * | |
1865 | * If the specified file _has_ a build-id and there is a build-id | |
1866 | * section in the perf.data file, we will still do the expected | |
1867 | * validation in dso__load_vmlinux and will bail out if they don't | |
1868 | * match. | |
1869 | */ | |
b226a5a7 DA |
1870 | if (symbol_conf.kallsyms_name != NULL) { |
1871 | kallsyms_filename = symbol_conf.kallsyms_name; | |
1872 | goto do_kallsyms; | |
1873 | } | |
1874 | ||
dc8d6ab2 | 1875 | if (symbol_conf.vmlinux_name != NULL) { |
9de89fe7 | 1876 | err = dso__load_vmlinux(self, map, |
dc8d6ab2 | 1877 | symbol_conf.vmlinux_name, filter); |
e7dadc00 ACM |
1878 | if (err > 0) { |
1879 | dso__set_long_name(self, | |
1880 | strdup(symbol_conf.vmlinux_name)); | |
1881 | goto out_fixup; | |
1882 | } | |
1883 | return err; | |
dc8d6ab2 | 1884 | } |
cc612d81 ACM |
1885 | |
1886 | if (vmlinux_path != NULL) { | |
9de89fe7 | 1887 | err = dso__load_vmlinux_path(self, map, filter); |
a19afe46 ACM |
1888 | if (err > 0) |
1889 | goto out_fixup; | |
cc612d81 ACM |
1890 | } |
1891 | ||
ec5761ea DA |
1892 | /* do not try local files if a symfs was given */ |
1893 | if (symbol_conf.symfs[0] != 0) | |
1894 | return -1; | |
1895 | ||
b7cece76 ACM |
1896 | /* |
1897 | * Say the kernel DSO was created when processing the build-id header table, | |
1898 | * we have a build-id, so check if it is the same as the running kernel, | |
1899 | * using it if it is. | |
1900 | */ | |
1901 | if (self->has_build_id) { | |
1902 | u8 kallsyms_build_id[BUILD_ID_SIZE]; | |
9e201442 | 1903 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
b7cece76 ACM |
1904 | |
1905 | if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id, | |
8d0591f6 | 1906 | sizeof(kallsyms_build_id)) == 0) { |
9e201442 ACM |
1907 | if (dso__build_id_equal(self, kallsyms_build_id)) { |
1908 | kallsyms_filename = "/proc/kallsyms"; | |
8d0591f6 | 1909 | goto do_kallsyms; |
9e201442 | 1910 | } |
8d0591f6 | 1911 | } |
dc8d6ab2 ACM |
1912 | /* |
1913 | * Now look if we have it on the build-id cache in | |
1914 | * $HOME/.debug/[kernel.kallsyms]. | |
1915 | */ | |
9e201442 ACM |
1916 | build_id__sprintf(self->build_id, sizeof(self->build_id), |
1917 | sbuild_id); | |
1918 | ||
1919 | if (asprintf(&kallsyms_allocated_filename, | |
1920 | "%s/.debug/[kernel.kallsyms]/%s", | |
3846df2e ACM |
1921 | getenv("HOME"), sbuild_id) == -1) { |
1922 | pr_err("Not enough memory for kallsyms file lookup\n"); | |
dc8d6ab2 | 1923 | return -1; |
3846df2e | 1924 | } |
dc8d6ab2 | 1925 | |
19fc2ded ACM |
1926 | kallsyms_filename = kallsyms_allocated_filename; |
1927 | ||
dc8d6ab2 | 1928 | if (access(kallsyms_filename, F_OK)) { |
3846df2e ACM |
1929 | pr_err("No kallsyms or vmlinux with build-id %s " |
1930 | "was found\n", sbuild_id); | |
9e201442 | 1931 | free(kallsyms_allocated_filename); |
dc8d6ab2 | 1932 | return -1; |
9e201442 | 1933 | } |
dc8d6ab2 ACM |
1934 | } else { |
1935 | /* | |
1936 | * Last resort, if we don't have a build-id and couldn't find | |
1937 | * any vmlinux file, try the running kernel kallsyms table. | |
1938 | */ | |
9e201442 | 1939 | kallsyms_filename = "/proc/kallsyms"; |
9e201442 | 1940 | } |
439d473b | 1941 | |
cc612d81 | 1942 | do_kallsyms: |
9de89fe7 | 1943 | err = dso__load_kallsyms(self, kallsyms_filename, map, filter); |
3846df2e ACM |
1944 | if (err > 0) |
1945 | pr_debug("Using %s for symbols\n", kallsyms_filename); | |
dc8d6ab2 | 1946 | free(kallsyms_allocated_filename); |
439d473b ACM |
1947 | |
1948 | if (err > 0) { | |
cc612d81 | 1949 | out_fixup: |
e1c7c6a4 | 1950 | if (kallsyms_filename != NULL) |
dc8d6ab2 | 1951 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
6a4694a4 ACM |
1952 | map__fixup_start(map); |
1953 | map__fixup_end(map); | |
439d473b | 1954 | } |
94cb9e38 | 1955 | |
a827c875 ACM |
1956 | return err; |
1957 | } | |
1958 | ||
a1645ce1 ZY |
1959 | static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, |
1960 | symbol_filter_t filter) | |
1961 | { | |
1962 | int err; | |
1963 | const char *kallsyms_filename = NULL; | |
23346f21 | 1964 | struct machine *machine; |
a1645ce1 ZY |
1965 | char path[PATH_MAX]; |
1966 | ||
1967 | if (!map->groups) { | |
1968 | pr_debug("Guest kernel map hasn't the point to groups\n"); | |
1969 | return -1; | |
1970 | } | |
23346f21 | 1971 | machine = map->groups->machine; |
a1645ce1 | 1972 | |
23346f21 | 1973 | if (machine__is_default_guest(machine)) { |
a1645ce1 ZY |
1974 | /* |
1975 | * if the user specified a vmlinux filename, use it and only | |
1976 | * it, reporting errors to the user if it cannot be used. | |
1977 | * Or use file guest_kallsyms inputted by user on commandline | |
1978 | */ | |
1979 | if (symbol_conf.default_guest_vmlinux_name != NULL) { | |
1980 | err = dso__load_vmlinux(self, map, | |
1981 | symbol_conf.default_guest_vmlinux_name, filter); | |
1982 | goto out_try_fixup; | |
1983 | } | |
1984 | ||
1985 | kallsyms_filename = symbol_conf.default_guest_kallsyms; | |
1986 | if (!kallsyms_filename) | |
1987 | return -1; | |
1988 | } else { | |
23346f21 | 1989 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
1990 | kallsyms_filename = path; |
1991 | } | |
1992 | ||
1993 | err = dso__load_kallsyms(self, kallsyms_filename, map, filter); | |
1994 | if (err > 0) | |
1995 | pr_debug("Using %s for symbols\n", kallsyms_filename); | |
1996 | ||
1997 | out_try_fixup: | |
1998 | if (err > 0) { | |
1999 | if (kallsyms_filename != NULL) { | |
48ea8f54 | 2000 | machine__mmap_name(machine, path, sizeof(path)); |
23346f21 | 2001 | dso__set_long_name(self, strdup(path)); |
a1645ce1 ZY |
2002 | } |
2003 | map__fixup_start(map); | |
2004 | map__fixup_end(map); | |
2005 | } | |
2006 | ||
2007 | return err; | |
2008 | } | |
cd84c2ac | 2009 | |
b0da954a | 2010 | static void dsos__add(struct list_head *head, struct dso *dso) |
cd84c2ac | 2011 | { |
b0da954a | 2012 | list_add_tail(&dso->node, head); |
cd84c2ac FW |
2013 | } |
2014 | ||
b0da954a | 2015 | static struct dso *dsos__find(struct list_head *head, const char *name) |
cd84c2ac FW |
2016 | { |
2017 | struct dso *pos; | |
2018 | ||
b0da954a | 2019 | list_for_each_entry(pos, head, node) |
cf4e5b08 | 2020 | if (strcmp(pos->long_name, name) == 0) |
cd84c2ac FW |
2021 | return pos; |
2022 | return NULL; | |
2023 | } | |
2024 | ||
a89e5abe | 2025 | struct dso *__dsos__findnew(struct list_head *head, const char *name) |
cd84c2ac | 2026 | { |
a89e5abe | 2027 | struct dso *dso = dsos__find(head, name); |
cd84c2ac | 2028 | |
e4204992 | 2029 | if (!dso) { |
00a192b3 | 2030 | dso = dso__new(name); |
cfc10d3b | 2031 | if (dso != NULL) { |
a89e5abe | 2032 | dsos__add(head, dso); |
cfc10d3b ACM |
2033 | dso__set_basename(dso); |
2034 | } | |
66bd8424 | 2035 | } |
cd84c2ac FW |
2036 | |
2037 | return dso; | |
cd84c2ac FW |
2038 | } |
2039 | ||
1f626bc3 | 2040 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) |
cd84c2ac FW |
2041 | { |
2042 | struct dso *pos; | |
cbf69680 | 2043 | size_t ret = 0; |
cd84c2ac | 2044 | |
95011c60 ACM |
2045 | list_for_each_entry(pos, head, node) { |
2046 | int i; | |
2047 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
cbf69680 | 2048 | ret += dso__fprintf(pos, i, fp); |
95011c60 | 2049 | } |
cbf69680 ACM |
2050 | |
2051 | return ret; | |
cd84c2ac FW |
2052 | } |
2053 | ||
cbf69680 | 2054 | size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp) |
b0da954a | 2055 | { |
a1645ce1 | 2056 | struct rb_node *nd; |
cbf69680 | 2057 | size_t ret = 0; |
a1645ce1 | 2058 | |
cbf69680 | 2059 | for (nd = rb_first(self); nd; nd = rb_next(nd)) { |
23346f21 | 2060 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
cbf69680 ACM |
2061 | ret += __dsos__fprintf(&pos->kernel_dsos, fp); |
2062 | ret += __dsos__fprintf(&pos->user_dsos, fp); | |
a1645ce1 | 2063 | } |
cbf69680 ACM |
2064 | |
2065 | return ret; | |
b0da954a ACM |
2066 | } |
2067 | ||
88d3d9b7 ACM |
2068 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, |
2069 | bool with_hits) | |
9e03eb2d ACM |
2070 | { |
2071 | struct dso *pos; | |
2072 | size_t ret = 0; | |
2073 | ||
b0da954a | 2074 | list_for_each_entry(pos, head, node) { |
88d3d9b7 ACM |
2075 | if (with_hits && !pos->hit) |
2076 | continue; | |
9e03eb2d | 2077 | ret += dso__fprintf_buildid(pos, fp); |
1124ba73 | 2078 | ret += fprintf(fp, " %s\n", pos->long_name); |
9e03eb2d ACM |
2079 | } |
2080 | return ret; | |
2081 | } | |
2082 | ||
f869097e ACM |
2083 | size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits) |
2084 | { | |
2085 | return __dsos__fprintf_buildid(&self->kernel_dsos, fp, with_hits) + | |
2086 | __dsos__fprintf_buildid(&self->user_dsos, fp, with_hits); | |
2087 | } | |
2088 | ||
cbf69680 | 2089 | size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits) |
b0da954a | 2090 | { |
a1645ce1 ZY |
2091 | struct rb_node *nd; |
2092 | size_t ret = 0; | |
2093 | ||
cbf69680 | 2094 | for (nd = rb_first(self); nd; nd = rb_next(nd)) { |
23346f21 | 2095 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
f869097e | 2096 | ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); |
a1645ce1 ZY |
2097 | } |
2098 | return ret; | |
b0da954a ACM |
2099 | } |
2100 | ||
fd1d908c ACM |
2101 | struct dso *dso__new_kernel(const char *name) |
2102 | { | |
2103 | struct dso *self = dso__new(name ?: "[kernel.kallsyms]"); | |
2104 | ||
2105 | if (self != NULL) { | |
b63be8d7 | 2106 | dso__set_short_name(self, "[kernel]"); |
a1645ce1 ZY |
2107 | self->kernel = DSO_TYPE_KERNEL; |
2108 | } | |
2109 | ||
2110 | return self; | |
2111 | } | |
2112 | ||
23346f21 | 2113 | static struct dso *dso__new_guest_kernel(struct machine *machine, |
a1645ce1 ZY |
2114 | const char *name) |
2115 | { | |
48ea8f54 ACM |
2116 | char bf[PATH_MAX]; |
2117 | struct dso *self = dso__new(name ?: machine__mmap_name(machine, bf, sizeof(bf))); | |
a1645ce1 | 2118 | |
a1645ce1 ZY |
2119 | if (self != NULL) { |
2120 | dso__set_short_name(self, "[guest.kernel]"); | |
2121 | self->kernel = DSO_TYPE_GUEST_KERNEL; | |
fd1d908c ACM |
2122 | } |
2123 | ||
2124 | return self; | |
2125 | } | |
2126 | ||
23346f21 | 2127 | void dso__read_running_kernel_build_id(struct dso *self, struct machine *machine) |
fd1d908c | 2128 | { |
a1645ce1 ZY |
2129 | char path[PATH_MAX]; |
2130 | ||
23346f21 | 2131 | if (machine__is_default_guest(machine)) |
a1645ce1 | 2132 | return; |
23346f21 | 2133 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); |
a1645ce1 | 2134 | if (sysfs__read_build_id(path, self->build_id, |
fd1d908c ACM |
2135 | sizeof(self->build_id)) == 0) |
2136 | self->has_build_id = true; | |
2137 | } | |
2138 | ||
5c0541d5 | 2139 | static struct dso *machine__create_kernel(struct machine *self) |
cd84c2ac | 2140 | { |
a1645ce1 ZY |
2141 | const char *vmlinux_name = NULL; |
2142 | struct dso *kernel; | |
cd84c2ac | 2143 | |
5c0541d5 | 2144 | if (machine__is_host(self)) { |
a1645ce1 ZY |
2145 | vmlinux_name = symbol_conf.vmlinux_name; |
2146 | kernel = dso__new_kernel(vmlinux_name); | |
2147 | } else { | |
5c0541d5 | 2148 | if (machine__is_default_guest(self)) |
a1645ce1 | 2149 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; |
5c0541d5 | 2150 | kernel = dso__new_guest_kernel(self, vmlinux_name); |
8d92c02a | 2151 | } |
cd84c2ac | 2152 | |
a1645ce1 | 2153 | if (kernel != NULL) { |
5c0541d5 ACM |
2154 | dso__read_running_kernel_build_id(kernel, self); |
2155 | dsos__add(&self->kernel_dsos, kernel); | |
a1645ce1 | 2156 | } |
f1dfa0b1 | 2157 | return kernel; |
f1dfa0b1 ACM |
2158 | } |
2159 | ||
d214afbd ML |
2160 | struct process_args { |
2161 | u64 start; | |
2162 | }; | |
2163 | ||
2164 | static int symbol__in_kernel(void *arg, const char *name, | |
2165 | char type __used, u64 start) | |
2166 | { | |
2167 | struct process_args *args = arg; | |
2168 | ||
2169 | if (strchr(name, '[')) | |
2170 | return 0; | |
2171 | ||
2172 | args->start = start; | |
2173 | return 1; | |
2174 | } | |
2175 | ||
2176 | /* Figure out the start address of kernel map from /proc/kallsyms */ | |
2177 | static u64 machine__get_kernel_start_addr(struct machine *machine) | |
2178 | { | |
2179 | const char *filename; | |
2180 | char path[PATH_MAX]; | |
2181 | struct process_args args; | |
2182 | ||
2183 | if (machine__is_host(machine)) { | |
2184 | filename = "/proc/kallsyms"; | |
2185 | } else { | |
2186 | if (machine__is_default_guest(machine)) | |
2187 | filename = (char *)symbol_conf.default_guest_kallsyms; | |
2188 | else { | |
2189 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); | |
2190 | filename = path; | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) | |
2195 | return 0; | |
2196 | ||
2197 | return args.start; | |
2198 | } | |
2199 | ||
d28c6223 | 2200 | int __machine__create_kernel_maps(struct machine *self, struct dso *kernel) |
f1dfa0b1 | 2201 | { |
de176489 | 2202 | enum map_type type; |
d214afbd | 2203 | u64 start = machine__get_kernel_start_addr(self); |
f1dfa0b1 | 2204 | |
de176489 | 2205 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
9de89fe7 ACM |
2206 | struct kmap *kmap; |
2207 | ||
d214afbd | 2208 | self->vmlinux_maps[type] = map__new2(start, kernel, type); |
d28c6223 | 2209 | if (self->vmlinux_maps[type] == NULL) |
de176489 | 2210 | return -1; |
f1dfa0b1 | 2211 | |
d28c6223 ACM |
2212 | self->vmlinux_maps[type]->map_ip = |
2213 | self->vmlinux_maps[type]->unmap_ip = identity__map_ip; | |
9de89fe7 | 2214 | |
d28c6223 ACM |
2215 | kmap = map__kmap(self->vmlinux_maps[type]); |
2216 | kmap->kmaps = &self->kmaps; | |
2217 | map_groups__insert(&self->kmaps, self->vmlinux_maps[type]); | |
f1dfa0b1 ACM |
2218 | } |
2219 | ||
f1dfa0b1 | 2220 | return 0; |
2446042c ACM |
2221 | } |
2222 | ||
076c6e45 ACM |
2223 | void machine__destroy_kernel_maps(struct machine *self) |
2224 | { | |
2225 | enum map_type type; | |
2226 | ||
2227 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
2228 | struct kmap *kmap; | |
2229 | ||
2230 | if (self->vmlinux_maps[type] == NULL) | |
2231 | continue; | |
2232 | ||
2233 | kmap = map__kmap(self->vmlinux_maps[type]); | |
2234 | map_groups__remove(&self->kmaps, self->vmlinux_maps[type]); | |
2235 | if (kmap->ref_reloc_sym) { | |
2236 | /* | |
2237 | * ref_reloc_sym is shared among all maps, so free just | |
2238 | * on one of them. | |
2239 | */ | |
2240 | if (type == MAP__FUNCTION) { | |
2241 | free((char *)kmap->ref_reloc_sym->name); | |
2242 | kmap->ref_reloc_sym->name = NULL; | |
2243 | free(kmap->ref_reloc_sym); | |
2244 | } | |
2245 | kmap->ref_reloc_sym = NULL; | |
2246 | } | |
2247 | ||
2248 | map__delete(self->vmlinux_maps[type]); | |
2249 | self->vmlinux_maps[type] = NULL; | |
2250 | } | |
2251 | } | |
2252 | ||
5c0541d5 ACM |
2253 | int machine__create_kernel_maps(struct machine *self) |
2254 | { | |
2255 | struct dso *kernel = machine__create_kernel(self); | |
2256 | ||
2257 | if (kernel == NULL || | |
2258 | __machine__create_kernel_maps(self, kernel) < 0) | |
2259 | return -1; | |
2260 | ||
2261 | if (symbol_conf.use_modules && machine__create_modules(self) < 0) | |
2262 | pr_debug("Problems creating module maps, continuing anyway...\n"); | |
2263 | /* | |
2264 | * Now that we have all the maps created, just set the ->end of them: | |
2265 | */ | |
2266 | map_groups__fixup_end(&self->kmaps); | |
2267 | return 0; | |
2268 | } | |
2269 | ||
cc612d81 ACM |
2270 | static void vmlinux_path__exit(void) |
2271 | { | |
2272 | while (--vmlinux_path__nr_entries >= 0) { | |
2273 | free(vmlinux_path[vmlinux_path__nr_entries]); | |
2274 | vmlinux_path[vmlinux_path__nr_entries] = NULL; | |
2275 | } | |
2276 | ||
2277 | free(vmlinux_path); | |
2278 | vmlinux_path = NULL; | |
2279 | } | |
2280 | ||
2281 | static int vmlinux_path__init(void) | |
2282 | { | |
2283 | struct utsname uts; | |
2284 | char bf[PATH_MAX]; | |
2285 | ||
cc612d81 ACM |
2286 | vmlinux_path = malloc(sizeof(char *) * 5); |
2287 | if (vmlinux_path == NULL) | |
2288 | return -1; | |
2289 | ||
2290 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); | |
2291 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
2292 | goto out_fail; | |
2293 | ++vmlinux_path__nr_entries; | |
2294 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); | |
2295 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
2296 | goto out_fail; | |
2297 | ++vmlinux_path__nr_entries; | |
ec5761ea DA |
2298 | |
2299 | /* only try running kernel version if no symfs was given */ | |
2300 | if (symbol_conf.symfs[0] != 0) | |
2301 | return 0; | |
2302 | ||
2303 | if (uname(&uts) < 0) | |
2304 | return -1; | |
2305 | ||
cc612d81 ACM |
2306 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
2307 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
2308 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
2309 | goto out_fail; | |
2310 | ++vmlinux_path__nr_entries; | |
2311 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); | |
2312 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
2313 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
2314 | goto out_fail; | |
2315 | ++vmlinux_path__nr_entries; | |
2316 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", | |
2317 | uts.release); | |
2318 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
2319 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
2320 | goto out_fail; | |
2321 | ++vmlinux_path__nr_entries; | |
2322 | ||
2323 | return 0; | |
2324 | ||
2325 | out_fail: | |
2326 | vmlinux_path__exit(); | |
2327 | return -1; | |
2328 | } | |
2329 | ||
5ad90e4e | 2330 | size_t machine__fprintf_vmlinux_path(struct machine *self, FILE *fp) |
b0a9ab62 ACM |
2331 | { |
2332 | int i; | |
2333 | size_t printed = 0; | |
5ad90e4e ACM |
2334 | struct dso *kdso = self->vmlinux_maps[MAP__FUNCTION]->dso; |
2335 | ||
2336 | if (kdso->has_build_id) { | |
2337 | char filename[PATH_MAX]; | |
2338 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) | |
2339 | printed += fprintf(fp, "[0] %s\n", filename); | |
2340 | } | |
b0a9ab62 ACM |
2341 | |
2342 | for (i = 0; i < vmlinux_path__nr_entries; ++i) | |
5ad90e4e ACM |
2343 | printed += fprintf(fp, "[%d] %s\n", |
2344 | i + kdso->has_build_id, vmlinux_path[i]); | |
b0a9ab62 ACM |
2345 | |
2346 | return printed; | |
2347 | } | |
2348 | ||
655000e7 ACM |
2349 | static int setup_list(struct strlist **list, const char *list_str, |
2350 | const char *list_name) | |
2351 | { | |
2352 | if (list_str == NULL) | |
2353 | return 0; | |
2354 | ||
2355 | *list = strlist__new(true, list_str); | |
2356 | if (!*list) { | |
2357 | pr_err("problems parsing %s list\n", list_name); | |
2358 | return -1; | |
2359 | } | |
2360 | return 0; | |
2361 | } | |
2362 | ||
75be6cf4 | 2363 | int symbol__init(void) |
2446042c | 2364 | { |
ec5761ea DA |
2365 | const char *symfs; |
2366 | ||
85e00b55 JZ |
2367 | if (symbol_conf.initialized) |
2368 | return 0; | |
2369 | ||
95011c60 | 2370 | elf_version(EV_CURRENT); |
75be6cf4 ACM |
2371 | if (symbol_conf.sort_by_name) |
2372 | symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - | |
2373 | sizeof(struct symbol)); | |
b32d133a | 2374 | |
75be6cf4 | 2375 | if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) |
2446042c ACM |
2376 | return -1; |
2377 | ||
c410a338 ACM |
2378 | if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') { |
2379 | pr_err("'.' is the only non valid --field-separator argument\n"); | |
2380 | return -1; | |
2381 | } | |
2382 | ||
655000e7 ACM |
2383 | if (setup_list(&symbol_conf.dso_list, |
2384 | symbol_conf.dso_list_str, "dso") < 0) | |
2385 | return -1; | |
2386 | ||
2387 | if (setup_list(&symbol_conf.comm_list, | |
2388 | symbol_conf.comm_list_str, "comm") < 0) | |
2389 | goto out_free_dso_list; | |
2390 | ||
2391 | if (setup_list(&symbol_conf.sym_list, | |
2392 | symbol_conf.sym_list_str, "symbol") < 0) | |
2393 | goto out_free_comm_list; | |
2394 | ||
ec5761ea DA |
2395 | /* |
2396 | * A path to symbols of "/" is identical to "" | |
2397 | * reset here for simplicity. | |
2398 | */ | |
2399 | symfs = realpath(symbol_conf.symfs, NULL); | |
2400 | if (symfs == NULL) | |
2401 | symfs = symbol_conf.symfs; | |
2402 | if (strcmp(symfs, "/") == 0) | |
2403 | symbol_conf.symfs = ""; | |
2404 | if (symfs != symbol_conf.symfs) | |
2405 | free((void *)symfs); | |
2406 | ||
85e00b55 | 2407 | symbol_conf.initialized = true; |
4aa65636 | 2408 | return 0; |
655000e7 ACM |
2409 | |
2410 | out_free_dso_list: | |
2411 | strlist__delete(symbol_conf.dso_list); | |
2412 | out_free_comm_list: | |
2413 | strlist__delete(symbol_conf.comm_list); | |
2414 | return -1; | |
4aa65636 ACM |
2415 | } |
2416 | ||
d65a458b ACM |
2417 | void symbol__exit(void) |
2418 | { | |
85e00b55 JZ |
2419 | if (!symbol_conf.initialized) |
2420 | return; | |
d65a458b ACM |
2421 | strlist__delete(symbol_conf.sym_list); |
2422 | strlist__delete(symbol_conf.dso_list); | |
2423 | strlist__delete(symbol_conf.comm_list); | |
2424 | vmlinux_path__exit(); | |
2425 | symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; | |
85e00b55 | 2426 | symbol_conf.initialized = false; |
d65a458b ACM |
2427 | } |
2428 | ||
d28c6223 | 2429 | int machines__create_kernel_maps(struct rb_root *self, pid_t pid) |
4aa65636 | 2430 | { |
d28c6223 | 2431 | struct machine *machine = machines__findnew(self, pid); |
9de89fe7 | 2432 | |
23346f21 | 2433 | if (machine == NULL) |
a1645ce1 | 2434 | return -1; |
cc612d81 | 2435 | |
5c0541d5 | 2436 | return machine__create_kernel_maps(machine); |
cd84c2ac | 2437 | } |
5aab621b ACM |
2438 | |
2439 | static int hex(char ch) | |
2440 | { | |
2441 | if ((ch >= '0') && (ch <= '9')) | |
2442 | return ch - '0'; | |
2443 | if ((ch >= 'a') && (ch <= 'f')) | |
2444 | return ch - 'a' + 10; | |
2445 | if ((ch >= 'A') && (ch <= 'F')) | |
2446 | return ch - 'A' + 10; | |
2447 | return -1; | |
2448 | } | |
2449 | ||
2450 | /* | |
2451 | * While we find nice hex chars, build a long_val. | |
2452 | * Return number of chars processed. | |
2453 | */ | |
2454 | int hex2u64(const char *ptr, u64 *long_val) | |
2455 | { | |
2456 | const char *p = ptr; | |
2457 | *long_val = 0; | |
2458 | ||
2459 | while (*p) { | |
2460 | const int hex_val = hex(*p); | |
2461 | ||
2462 | if (hex_val < 0) | |
2463 | break; | |
2464 | ||
2465 | *long_val = (*long_val << 4) | hex_val; | |
2466 | p++; | |
2467 | } | |
2468 | ||
2469 | return p - ptr; | |
2470 | } | |
2471 | ||
2472 | char *strxfrchar(char *s, char from, char to) | |
2473 | { | |
2474 | char *p = s; | |
2475 | ||
2476 | while ((p = strchr(p, from)) != NULL) | |
2477 | *p++ = to; | |
2478 | ||
2479 | return s; | |
2480 | } | |
a1645ce1 | 2481 | |
d28c6223 | 2482 | int machines__create_guest_kernel_maps(struct rb_root *self) |
a1645ce1 ZY |
2483 | { |
2484 | int ret = 0; | |
2485 | struct dirent **namelist = NULL; | |
2486 | int i, items = 0; | |
2487 | char path[PATH_MAX]; | |
2488 | pid_t pid; | |
2489 | ||
2490 | if (symbol_conf.default_guest_vmlinux_name || | |
2491 | symbol_conf.default_guest_modules || | |
2492 | symbol_conf.default_guest_kallsyms) { | |
d28c6223 | 2493 | machines__create_kernel_maps(self, DEFAULT_GUEST_KERNEL_ID); |
a1645ce1 ZY |
2494 | } |
2495 | ||
2496 | if (symbol_conf.guestmount) { | |
2497 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
2498 | if (items <= 0) | |
2499 | return -ENOENT; | |
2500 | for (i = 0; i < items; i++) { | |
2501 | if (!isdigit(namelist[i]->d_name[0])) { | |
2502 | /* Filter out . and .. */ | |
2503 | continue; | |
2504 | } | |
2505 | pid = atoi(namelist[i]->d_name); | |
2506 | sprintf(path, "%s/%s/proc/kallsyms", | |
2507 | symbol_conf.guestmount, | |
2508 | namelist[i]->d_name); | |
2509 | ret = access(path, R_OK); | |
2510 | if (ret) { | |
2511 | pr_debug("Can't access file %s\n", path); | |
2512 | goto failure; | |
2513 | } | |
d28c6223 | 2514 | machines__create_kernel_maps(self, pid); |
a1645ce1 ZY |
2515 | } |
2516 | failure: | |
2517 | free(namelist); | |
2518 | } | |
2519 | ||
2520 | return ret; | |
2521 | } | |
5c0541d5 | 2522 | |
076c6e45 ACM |
2523 | void machines__destroy_guest_kernel_maps(struct rb_root *self) |
2524 | { | |
2525 | struct rb_node *next = rb_first(self); | |
2526 | ||
2527 | while (next) { | |
2528 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
2529 | ||
2530 | next = rb_next(&pos->rb_node); | |
2531 | rb_erase(&pos->rb_node, self); | |
2532 | machine__delete(pos); | |
2533 | } | |
2534 | } | |
2535 | ||
5c0541d5 ACM |
2536 | int machine__load_kallsyms(struct machine *self, const char *filename, |
2537 | enum map_type type, symbol_filter_t filter) | |
2538 | { | |
2539 | struct map *map = self->vmlinux_maps[type]; | |
2540 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); | |
2541 | ||
2542 | if (ret > 0) { | |
2543 | dso__set_loaded(map->dso, type); | |
2544 | /* | |
2545 | * Since /proc/kallsyms will have multiple sessions for the | |
2546 | * kernel, with modules between them, fixup the end of all | |
2547 | * sections. | |
2548 | */ | |
2549 | __map_groups__fixup_end(&self->kmaps, type); | |
2550 | } | |
2551 | ||
2552 | return ret; | |
2553 | } | |
2554 | ||
2555 | int machine__load_vmlinux_path(struct machine *self, enum map_type type, | |
2556 | symbol_filter_t filter) | |
2557 | { | |
2558 | struct map *map = self->vmlinux_maps[type]; | |
2559 | int ret = dso__load_vmlinux_path(map->dso, map, filter); | |
2560 | ||
2561 | if (ret > 0) { | |
2562 | dso__set_loaded(map->dso, type); | |
2563 | map__reloc_vmlinux(map); | |
2564 | } | |
2565 | ||
2566 | return ret; | |
2567 | } |