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Commit | Line | Data |
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66e274f3 | 1 | #include "symbol.h" |
c6e718ff | 2 | #include <errno.h> |
9486aa38 | 3 | #include <inttypes.h> |
4b8cf846 | 4 | #include <limits.h> |
66e274f3 FW |
5 | #include <stdlib.h> |
6 | #include <string.h> | |
7 | #include <stdio.h> | |
a1645ce1 | 8 | #include <unistd.h> |
4b8cf846 | 9 | #include "map.h" |
5cd95c2d | 10 | #include "thread.h" |
c80c3c26 | 11 | #include "strlist.h" |
7dbf4dcf | 12 | #include "vdso.h" |
ebb296c2 | 13 | #include "build-id.h" |
cc8fae1d | 14 | #include "util.h" |
8e16017d | 15 | #include <linux/string.h> |
66e274f3 | 16 | |
3846df2e ACM |
17 | const char *map_type__name[MAP__NR_TYPES] = { |
18 | [MAP__FUNCTION] = "Functions", | |
19 | [MAP__VARIABLE] = "Variables", | |
20 | }; | |
21 | ||
66e274f3 FW |
22 | static inline int is_anon_memory(const char *filename) |
23 | { | |
d0528b5d | 24 | return !strcmp(filename, "//anon") || |
89365e6c | 25 | !strcmp(filename, "/dev/zero (deleted)") || |
d0528b5d | 26 | !strcmp(filename, "/anon_hugepage (deleted)"); |
66e274f3 FW |
27 | } |
28 | ||
87ffef79 JO |
29 | static inline int is_no_dso_memory(const char *filename) |
30 | { | |
1e82574d | 31 | return !strncmp(filename, "[stack", 6) || |
87ffef79 JO |
32 | !strcmp(filename, "[heap]"); |
33 | } | |
34 | ||
237a7e04 | 35 | void map__init(struct map *map, enum map_type type, |
3610583c | 36 | u64 start, u64 end, u64 pgoff, struct dso *dso) |
afb7b4f0 | 37 | { |
237a7e04 ACM |
38 | map->type = type; |
39 | map->start = start; | |
40 | map->end = end; | |
41 | map->pgoff = pgoff; | |
42 | map->dso = dso; | |
43 | map->map_ip = map__map_ip; | |
44 | map->unmap_ip = map__unmap_ip; | |
45 | RB_CLEAR_NODE(&map->rb_node); | |
46 | map->groups = NULL; | |
47 | map->referenced = false; | |
48 | map->erange_warned = false; | |
afb7b4f0 ACM |
49 | } |
50 | ||
a1645ce1 | 51 | struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, |
5c5e854b SE |
52 | u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, |
53 | u64 ino_gen, char *filename, | |
361d1346 | 54 | enum map_type type) |
66e274f3 | 55 | { |
237a7e04 | 56 | struct map *map = malloc(sizeof(*map)); |
66e274f3 | 57 | |
237a7e04 | 58 | if (map != NULL) { |
66e274f3 | 59 | char newfilename[PATH_MAX]; |
afb7b4f0 | 60 | struct dso *dso; |
7dbf4dcf | 61 | int anon, no_dso, vdso; |
66e274f3 | 62 | |
66e274f3 | 63 | anon = is_anon_memory(filename); |
7dbf4dcf | 64 | vdso = is_vdso_map(filename); |
87ffef79 | 65 | no_dso = is_no_dso_memory(filename); |
66e274f3 | 66 | |
5c5e854b SE |
67 | map->maj = d_maj; |
68 | map->min = d_min; | |
69 | map->ino = ino; | |
70 | map->ino_generation = ino_gen; | |
71 | ||
578c03c8 | 72 | if ((anon || no_dso) && type == MAP__FUNCTION) { |
b177f63f | 73 | snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid); |
66e274f3 FW |
74 | filename = newfilename; |
75 | } | |
76 | ||
7dbf4dcf JO |
77 | if (vdso) { |
78 | pgoff = 0; | |
79 | dso = vdso__dso_findnew(dsos__list); | |
80 | } else | |
81 | dso = __dsos__findnew(dsos__list, filename); | |
82 | ||
afb7b4f0 | 83 | if (dso == NULL) |
66e274f3 FW |
84 | goto out_delete; |
85 | ||
237a7e04 | 86 | map__init(map, type, start, start + len, pgoff, dso); |
afb7b4f0 | 87 | |
87ffef79 | 88 | if (anon || no_dso) { |
237a7e04 | 89 | map->map_ip = map->unmap_ip = identity__map_ip; |
87ffef79 JO |
90 | |
91 | /* | |
92 | * Set memory without DSO as loaded. All map__find_* | |
93 | * functions still return NULL, and we avoid the | |
94 | * unnecessary map__load warning. | |
95 | */ | |
578c03c8 | 96 | if (type != MAP__FUNCTION) |
237a7e04 | 97 | dso__set_loaded(dso, map->type); |
8d92c02a | 98 | } |
66e274f3 | 99 | } |
237a7e04 | 100 | return map; |
66e274f3 | 101 | out_delete: |
237a7e04 | 102 | free(map); |
66e274f3 FW |
103 | return NULL; |
104 | } | |
105 | ||
e5a1845f NK |
106 | /* |
107 | * Constructor variant for modules (where we know from /proc/modules where | |
108 | * they are loaded) and for vmlinux, where only after we load all the | |
109 | * symbols we'll know where it starts and ends. | |
110 | */ | |
111 | struct map *map__new2(u64 start, struct dso *dso, enum map_type type) | |
112 | { | |
113 | struct map *map = calloc(1, (sizeof(*map) + | |
114 | (dso->kernel ? sizeof(struct kmap) : 0))); | |
115 | if (map != NULL) { | |
116 | /* | |
117 | * ->end will be filled after we load all the symbols | |
118 | */ | |
119 | map__init(map, type, start, 0, 0, dso); | |
120 | } | |
121 | ||
122 | return map; | |
123 | } | |
124 | ||
237a7e04 | 125 | void map__delete(struct map *map) |
c338aee8 | 126 | { |
237a7e04 | 127 | free(map); |
c338aee8 ACM |
128 | } |
129 | ||
237a7e04 | 130 | void map__fixup_start(struct map *map) |
c338aee8 | 131 | { |
237a7e04 | 132 | struct rb_root *symbols = &map->dso->symbols[map->type]; |
fcf1203a | 133 | struct rb_node *nd = rb_first(symbols); |
c338aee8 ACM |
134 | if (nd != NULL) { |
135 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
237a7e04 | 136 | map->start = sym->start; |
c338aee8 ACM |
137 | } |
138 | } | |
139 | ||
237a7e04 | 140 | void map__fixup_end(struct map *map) |
c338aee8 | 141 | { |
237a7e04 | 142 | struct rb_root *symbols = &map->dso->symbols[map->type]; |
fcf1203a | 143 | struct rb_node *nd = rb_last(symbols); |
c338aee8 ACM |
144 | if (nd != NULL) { |
145 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
237a7e04 | 146 | map->end = sym->end; |
c338aee8 ACM |
147 | } |
148 | } | |
149 | ||
d70a5402 ACM |
150 | #define DSO__DELETED "(deleted)" |
151 | ||
237a7e04 | 152 | int map__load(struct map *map, symbol_filter_t filter) |
66bd8424 | 153 | { |
237a7e04 | 154 | const char *name = map->dso->long_name; |
a128168d | 155 | int nr; |
79406cd7 | 156 | |
237a7e04 | 157 | if (dso__loaded(map->dso, map->type)) |
a128168d MH |
158 | return 0; |
159 | ||
237a7e04 | 160 | nr = dso__load(map->dso, map, filter); |
79406cd7 | 161 | if (nr < 0) { |
237a7e04 | 162 | if (map->dso->has_build_id) { |
79406cd7 ACM |
163 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
164 | ||
237a7e04 ACM |
165 | build_id__sprintf(map->dso->build_id, |
166 | sizeof(map->dso->build_id), | |
79406cd7 ACM |
167 | sbuild_id); |
168 | pr_warning("%s with build id %s not found", | |
169 | name, sbuild_id); | |
170 | } else | |
171 | pr_warning("Failed to open %s", name); | |
172 | ||
173 | pr_warning(", continuing without symbols\n"); | |
174 | return -1; | |
175 | } else if (nr == 0) { | |
89fe808a | 176 | #ifdef HAVE_LIBELF_SUPPORT |
79406cd7 ACM |
177 | const size_t len = strlen(name); |
178 | const size_t real_len = len - sizeof(DSO__DELETED); | |
179 | ||
180 | if (len > sizeof(DSO__DELETED) && | |
181 | strcmp(name + real_len + 1, DSO__DELETED) == 0) { | |
e77b15bd DA |
182 | pr_warning("%.*s was updated (is prelink enabled?). " |
183 | "Restart the long running apps that use it!\n", | |
79406cd7 ACM |
184 | (int)real_len, name); |
185 | } else { | |
186 | pr_warning("no symbols found in %s, maybe install " | |
187 | "a debug package?\n", name); | |
66bd8424 | 188 | } |
393be2e3 | 189 | #endif |
79406cd7 | 190 | return -1; |
66bd8424 ACM |
191 | } |
192 | ||
79406cd7 ACM |
193 | return 0; |
194 | } | |
195 | ||
237a7e04 | 196 | struct symbol *map__find_symbol(struct map *map, u64 addr, |
9de89fe7 | 197 | symbol_filter_t filter) |
79406cd7 | 198 | { |
237a7e04 | 199 | if (map__load(map, filter) < 0) |
79406cd7 ACM |
200 | return NULL; |
201 | ||
237a7e04 | 202 | return dso__find_symbol(map->dso, map->type, addr); |
66bd8424 ACM |
203 | } |
204 | ||
237a7e04 | 205 | struct symbol *map__find_symbol_by_name(struct map *map, const char *name, |
79406cd7 ACM |
206 | symbol_filter_t filter) |
207 | { | |
237a7e04 | 208 | if (map__load(map, filter) < 0) |
79406cd7 ACM |
209 | return NULL; |
210 | ||
237a7e04 ACM |
211 | if (!dso__sorted_by_name(map->dso, map->type)) |
212 | dso__sort_by_name(map->dso, map->type); | |
79406cd7 | 213 | |
237a7e04 | 214 | return dso__find_symbol_by_name(map->dso, map->type, name); |
79406cd7 ACM |
215 | } |
216 | ||
237a7e04 | 217 | struct map *map__clone(struct map *map) |
66e274f3 | 218 | { |
8e16017d | 219 | return memdup(map, sizeof(*map)); |
66e274f3 FW |
220 | } |
221 | ||
222 | int map__overlap(struct map *l, struct map *r) | |
223 | { | |
224 | if (l->start > r->start) { | |
225 | struct map *t = l; | |
226 | l = r; | |
227 | r = t; | |
228 | } | |
229 | ||
230 | if (l->end > r->start) | |
231 | return 1; | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
237a7e04 | 236 | size_t map__fprintf(struct map *map, FILE *fp) |
66e274f3 | 237 | { |
9486aa38 | 238 | return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s\n", |
237a7e04 | 239 | map->start, map->end, map->pgoff, map->dso->name); |
66e274f3 | 240 | } |
7a2b6209 | 241 | |
547a92e0 AN |
242 | size_t map__fprintf_dsoname(struct map *map, FILE *fp) |
243 | { | |
8f28f19a | 244 | const char *dsoname = "[unknown]"; |
547a92e0 | 245 | |
0bc8d205 AN |
246 | if (map && map->dso && (map->dso->name || map->dso->long_name)) { |
247 | if (symbol_conf.show_kernel_path && map->dso->long_name) | |
248 | dsoname = map->dso->long_name; | |
249 | else if (map->dso->name) | |
250 | dsoname = map->dso->name; | |
8f28f19a | 251 | } |
547a92e0 AN |
252 | |
253 | return fprintf(fp, "%s", dsoname); | |
254 | } | |
255 | ||
cc8fae1d AH |
256 | int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, |
257 | FILE *fp) | |
258 | { | |
259 | char *srcline; | |
260 | int ret = 0; | |
261 | ||
262 | if (map && map->dso) { | |
263 | srcline = get_srcline(map->dso, | |
264 | map__rip_2objdump(map, addr)); | |
265 | if (srcline != SRCLINE_UNKNOWN) | |
266 | ret = fprintf(fp, "%s%s", prefix, srcline); | |
267 | free_srcline(srcline); | |
268 | } | |
269 | return ret; | |
270 | } | |
271 | ||
1d5077bd AH |
272 | /** |
273 | * map__rip_2objdump - convert symbol start address to objdump address. | |
274 | * @map: memory map | |
275 | * @rip: symbol start address | |
276 | * | |
7a2b6209 | 277 | * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN. |
0131c4ec AH |
278 | * map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is |
279 | * relative to section start. | |
1d5077bd AH |
280 | * |
281 | * Return: Address suitable for passing to "objdump --start-address=" | |
7a2b6209 KS |
282 | */ |
283 | u64 map__rip_2objdump(struct map *map, u64 rip) | |
284 | { | |
0131c4ec AH |
285 | if (!map->dso->adjust_symbols) |
286 | return rip; | |
287 | ||
288 | if (map->dso->rel) | |
289 | return rip - map->pgoff; | |
290 | ||
291 | return map->unmap_ip(map, rip); | |
7a2b6209 | 292 | } |
ee11b90b | 293 | |
1d5077bd AH |
294 | /** |
295 | * map__objdump_2mem - convert objdump address to a memory address. | |
296 | * @map: memory map | |
297 | * @ip: objdump address | |
298 | * | |
299 | * Closely related to map__rip_2objdump(), this function takes an address from | |
300 | * objdump and converts it to a memory address. Note this assumes that @map | |
301 | * contains the address. To be sure the result is valid, check it forwards | |
302 | * e.g. map__rip_2objdump(map->map_ip(map, map__objdump_2mem(map, ip))) == ip | |
303 | * | |
304 | * Return: Memory address. | |
305 | */ | |
306 | u64 map__objdump_2mem(struct map *map, u64 ip) | |
307 | { | |
308 | if (!map->dso->adjust_symbols) | |
309 | return map->unmap_ip(map, ip); | |
310 | ||
311 | if (map->dso->rel) | |
312 | return map->unmap_ip(map, ip + map->pgoff); | |
313 | ||
314 | return ip; | |
315 | } | |
316 | ||
98dfd55d | 317 | void map_groups__init(struct map_groups *mg) |
c6e718ff ACM |
318 | { |
319 | int i; | |
320 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
98dfd55d ACM |
321 | mg->maps[i] = RB_ROOT; |
322 | INIT_LIST_HEAD(&mg->removed_maps[i]); | |
c6e718ff | 323 | } |
98dfd55d | 324 | mg->machine = NULL; |
c6e718ff ACM |
325 | } |
326 | ||
98dfd55d | 327 | static void maps__delete(struct rb_root *maps) |
591765fd | 328 | { |
98dfd55d | 329 | struct rb_node *next = rb_first(maps); |
591765fd ACM |
330 | |
331 | while (next) { | |
332 | struct map *pos = rb_entry(next, struct map, rb_node); | |
333 | ||
334 | next = rb_next(&pos->rb_node); | |
98dfd55d | 335 | rb_erase(&pos->rb_node, maps); |
591765fd ACM |
336 | map__delete(pos); |
337 | } | |
338 | } | |
339 | ||
98dfd55d | 340 | static void maps__delete_removed(struct list_head *maps) |
591765fd ACM |
341 | { |
342 | struct map *pos, *n; | |
343 | ||
98dfd55d | 344 | list_for_each_entry_safe(pos, n, maps, node) { |
591765fd ACM |
345 | list_del(&pos->node); |
346 | map__delete(pos); | |
347 | } | |
348 | } | |
349 | ||
98dfd55d | 350 | void map_groups__exit(struct map_groups *mg) |
591765fd ACM |
351 | { |
352 | int i; | |
353 | ||
354 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
98dfd55d ACM |
355 | maps__delete(&mg->maps[i]); |
356 | maps__delete_removed(&mg->removed_maps[i]); | |
591765fd ACM |
357 | } |
358 | } | |
359 | ||
98dfd55d | 360 | void map_groups__flush(struct map_groups *mg) |
c6e718ff ACM |
361 | { |
362 | int type; | |
363 | ||
364 | for (type = 0; type < MAP__NR_TYPES; type++) { | |
98dfd55d | 365 | struct rb_root *root = &mg->maps[type]; |
c6e718ff ACM |
366 | struct rb_node *next = rb_first(root); |
367 | ||
368 | while (next) { | |
369 | struct map *pos = rb_entry(next, struct map, rb_node); | |
370 | next = rb_next(&pos->rb_node); | |
371 | rb_erase(&pos->rb_node, root); | |
372 | /* | |
373 | * We may have references to this map, for | |
374 | * instance in some hist_entry instances, so | |
375 | * just move them to a separate list. | |
376 | */ | |
98dfd55d | 377 | list_add_tail(&pos->node, &mg->removed_maps[pos->type]); |
c6e718ff ACM |
378 | } |
379 | } | |
380 | } | |
381 | ||
98dfd55d | 382 | struct symbol *map_groups__find_symbol(struct map_groups *mg, |
4b8cf846 | 383 | enum map_type type, u64 addr, |
7e5e1b14 | 384 | struct map **mapp, |
4b8cf846 ACM |
385 | symbol_filter_t filter) |
386 | { | |
98dfd55d | 387 | struct map *map = map_groups__find(mg, type, addr); |
4b8cf846 | 388 | |
7e5e1b14 ACM |
389 | if (map != NULL) { |
390 | if (mapp != NULL) | |
391 | *mapp = map; | |
4b8cf846 | 392 | return map__find_symbol(map, map->map_ip(map, addr), filter); |
7e5e1b14 ACM |
393 | } |
394 | ||
395 | return NULL; | |
396 | } | |
397 | ||
98dfd55d | 398 | struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, |
7e5e1b14 ACM |
399 | enum map_type type, |
400 | const char *name, | |
401 | struct map **mapp, | |
402 | symbol_filter_t filter) | |
403 | { | |
404 | struct rb_node *nd; | |
405 | ||
98dfd55d | 406 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
7e5e1b14 ACM |
407 | struct map *pos = rb_entry(nd, struct map, rb_node); |
408 | struct symbol *sym = map__find_symbol_by_name(pos, name, filter); | |
409 | ||
410 | if (sym == NULL) | |
411 | continue; | |
412 | if (mapp != NULL) | |
413 | *mapp = pos; | |
414 | return sym; | |
415 | } | |
4b8cf846 ACM |
416 | |
417 | return NULL; | |
418 | } | |
419 | ||
4e987712 ACM |
420 | int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter) |
421 | { | |
422 | if (ams->addr < ams->map->start || ams->addr > ams->map->end) { | |
423 | if (ams->map->groups == NULL) | |
424 | return -1; | |
425 | ams->map = map_groups__find(ams->map->groups, ams->map->type, | |
426 | ams->addr); | |
427 | if (ams->map == NULL) | |
428 | return -1; | |
429 | } | |
430 | ||
431 | ams->al_addr = ams->map->map_ip(ams->map, ams->addr); | |
432 | ams->sym = map__find_symbol(ams->map, ams->al_addr, filter); | |
433 | ||
434 | return ams->sym ? 0 : -1; | |
435 | } | |
436 | ||
98dfd55d | 437 | size_t __map_groups__fprintf_maps(struct map_groups *mg, |
c6e718ff ACM |
438 | enum map_type type, int verbose, FILE *fp) |
439 | { | |
440 | size_t printed = fprintf(fp, "%s:\n", map_type__name[type]); | |
441 | struct rb_node *nd; | |
442 | ||
98dfd55d | 443 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
c6e718ff ACM |
444 | struct map *pos = rb_entry(nd, struct map, rb_node); |
445 | printed += fprintf(fp, "Map:"); | |
446 | printed += map__fprintf(pos, fp); | |
447 | if (verbose > 2) { | |
448 | printed += dso__fprintf(pos->dso, type, fp); | |
449 | printed += fprintf(fp, "--\n"); | |
450 | } | |
451 | } | |
452 | ||
453 | return printed; | |
454 | } | |
455 | ||
98dfd55d | 456 | size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp) |
c6e718ff ACM |
457 | { |
458 | size_t printed = 0, i; | |
459 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
98dfd55d | 460 | printed += __map_groups__fprintf_maps(mg, i, verbose, fp); |
c6e718ff ACM |
461 | return printed; |
462 | } | |
463 | ||
98dfd55d | 464 | static size_t __map_groups__fprintf_removed_maps(struct map_groups *mg, |
c6e718ff ACM |
465 | enum map_type type, |
466 | int verbose, FILE *fp) | |
467 | { | |
468 | struct map *pos; | |
469 | size_t printed = 0; | |
470 | ||
98dfd55d | 471 | list_for_each_entry(pos, &mg->removed_maps[type], node) { |
c6e718ff ACM |
472 | printed += fprintf(fp, "Map:"); |
473 | printed += map__fprintf(pos, fp); | |
474 | if (verbose > 1) { | |
475 | printed += dso__fprintf(pos->dso, type, fp); | |
476 | printed += fprintf(fp, "--\n"); | |
477 | } | |
478 | } | |
479 | return printed; | |
480 | } | |
481 | ||
98dfd55d | 482 | static size_t map_groups__fprintf_removed_maps(struct map_groups *mg, |
c6e718ff ACM |
483 | int verbose, FILE *fp) |
484 | { | |
485 | size_t printed = 0, i; | |
486 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
98dfd55d | 487 | printed += __map_groups__fprintf_removed_maps(mg, i, verbose, fp); |
c6e718ff ACM |
488 | return printed; |
489 | } | |
490 | ||
98dfd55d | 491 | size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp) |
c6e718ff | 492 | { |
98dfd55d | 493 | size_t printed = map_groups__fprintf_maps(mg, verbose, fp); |
c6e718ff | 494 | printed += fprintf(fp, "Removed maps:\n"); |
98dfd55d | 495 | return printed + map_groups__fprintf_removed_maps(mg, verbose, fp); |
c6e718ff ACM |
496 | } |
497 | ||
98dfd55d | 498 | int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, |
c6e718ff ACM |
499 | int verbose, FILE *fp) |
500 | { | |
98dfd55d | 501 | struct rb_root *root = &mg->maps[map->type]; |
c6e718ff | 502 | struct rb_node *next = rb_first(root); |
0a1eae39 | 503 | int err = 0; |
c6e718ff ACM |
504 | |
505 | while (next) { | |
506 | struct map *pos = rb_entry(next, struct map, rb_node); | |
507 | next = rb_next(&pos->rb_node); | |
508 | ||
509 | if (!map__overlap(pos, map)) | |
510 | continue; | |
511 | ||
512 | if (verbose >= 2) { | |
513 | fputs("overlapping maps:\n", fp); | |
514 | map__fprintf(map, fp); | |
515 | map__fprintf(pos, fp); | |
516 | } | |
517 | ||
518 | rb_erase(&pos->rb_node, root); | |
c6e718ff ACM |
519 | /* |
520 | * Now check if we need to create new maps for areas not | |
521 | * overlapped by the new map: | |
522 | */ | |
523 | if (map->start > pos->start) { | |
524 | struct map *before = map__clone(pos); | |
525 | ||
0a1eae39 ACM |
526 | if (before == NULL) { |
527 | err = -ENOMEM; | |
528 | goto move_map; | |
529 | } | |
c6e718ff ACM |
530 | |
531 | before->end = map->start - 1; | |
98dfd55d | 532 | map_groups__insert(mg, before); |
c6e718ff ACM |
533 | if (verbose >= 2) |
534 | map__fprintf(before, fp); | |
535 | } | |
536 | ||
537 | if (map->end < pos->end) { | |
538 | struct map *after = map__clone(pos); | |
539 | ||
0a1eae39 ACM |
540 | if (after == NULL) { |
541 | err = -ENOMEM; | |
542 | goto move_map; | |
543 | } | |
c6e718ff ACM |
544 | |
545 | after->start = map->end + 1; | |
98dfd55d | 546 | map_groups__insert(mg, after); |
c6e718ff ACM |
547 | if (verbose >= 2) |
548 | map__fprintf(after, fp); | |
549 | } | |
0a1eae39 ACM |
550 | move_map: |
551 | /* | |
552 | * If we have references, just move them to a separate list. | |
553 | */ | |
554 | if (pos->referenced) | |
98dfd55d | 555 | list_add_tail(&pos->node, &mg->removed_maps[map->type]); |
0a1eae39 ACM |
556 | else |
557 | map__delete(pos); | |
558 | ||
559 | if (err) | |
560 | return err; | |
c6e718ff ACM |
561 | } |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | /* | |
567 | * XXX This should not really _copy_ te maps, but refcount them. | |
568 | */ | |
98dfd55d | 569 | int map_groups__clone(struct map_groups *mg, |
c6e718ff ACM |
570 | struct map_groups *parent, enum map_type type) |
571 | { | |
572 | struct rb_node *nd; | |
573 | for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) { | |
574 | struct map *map = rb_entry(nd, struct map, rb_node); | |
575 | struct map *new = map__clone(map); | |
576 | if (new == NULL) | |
577 | return -ENOMEM; | |
98dfd55d | 578 | map_groups__insert(mg, new); |
c6e718ff ACM |
579 | } |
580 | return 0; | |
581 | } | |
582 | ||
4b8cf846 ACM |
583 | void maps__insert(struct rb_root *maps, struct map *map) |
584 | { | |
585 | struct rb_node **p = &maps->rb_node; | |
586 | struct rb_node *parent = NULL; | |
587 | const u64 ip = map->start; | |
588 | struct map *m; | |
589 | ||
590 | while (*p != NULL) { | |
591 | parent = *p; | |
592 | m = rb_entry(parent, struct map, rb_node); | |
593 | if (ip < m->start) | |
594 | p = &(*p)->rb_left; | |
595 | else | |
596 | p = &(*p)->rb_right; | |
597 | } | |
598 | ||
599 | rb_link_node(&map->rb_node, parent, p); | |
600 | rb_insert_color(&map->rb_node, maps); | |
601 | } | |
602 | ||
237a7e04 | 603 | void maps__remove(struct rb_root *maps, struct map *map) |
076c6e45 | 604 | { |
237a7e04 | 605 | rb_erase(&map->rb_node, maps); |
076c6e45 ACM |
606 | } |
607 | ||
4b8cf846 ACM |
608 | struct map *maps__find(struct rb_root *maps, u64 ip) |
609 | { | |
610 | struct rb_node **p = &maps->rb_node; | |
611 | struct rb_node *parent = NULL; | |
612 | struct map *m; | |
613 | ||
614 | while (*p != NULL) { | |
615 | parent = *p; | |
616 | m = rb_entry(parent, struct map, rb_node); | |
617 | if (ip < m->start) | |
618 | p = &(*p)->rb_left; | |
619 | else if (ip > m->end) | |
620 | p = &(*p)->rb_right; | |
621 | else | |
622 | return m; | |
623 | } | |
624 | ||
625 | return NULL; | |
626 | } | |
8e0cf965 AH |
627 | |
628 | struct map *maps__first(struct rb_root *maps) | |
629 | { | |
630 | struct rb_node *first = rb_first(maps); | |
631 | ||
632 | if (first) | |
633 | return rb_entry(first, struct map, rb_node); | |
634 | return NULL; | |
635 | } | |
636 | ||
637 | struct map *maps__next(struct map *map) | |
638 | { | |
639 | struct rb_node *next = rb_next(&map->rb_node); | |
640 | ||
641 | if (next) | |
642 | return rb_entry(next, struct map, rb_node); | |
643 | return NULL; | |
644 | } |