1 /* 2 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 3 * 4 * Parts came from builtin-annotate.c, see those files for further 5 * copyright notes. 6 * 7 * Released under the GPL v2. (and only v2, not any later version) 8 */ 9 10 #include "util.h" 11 #include "ui/ui.h" 12 #include "sort.h" 13 #include "build-id.h" 14 #include "color.h" 15 #include "cache.h" 16 #include "symbol.h" 17 #include "debug.h" 18 #include "annotate.h" 19 #include "evsel.h" 20 #include <pthread.h> 21 #include <linux/bitops.h> 22 23 const char *disassembler_style; 24 const char *objdump_path; 25 26 static struct ins *ins__find(const char *name); 27 static int disasm_line__parse(char *line, char **namep, char **rawp); 28 29 static void ins__delete(struct ins_operands *ops) 30 { 31 zfree(&ops->source.raw); 32 zfree(&ops->source.name); 33 zfree(&ops->target.raw); 34 zfree(&ops->target.name); 35 } 36 37 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 38 struct ins_operands *ops) 39 { 40 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw); 41 } 42 43 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 44 struct ins_operands *ops) 45 { 46 if (ins->ops->scnprintf) 47 return ins->ops->scnprintf(ins, bf, size, ops); 48 49 return ins__raw_scnprintf(ins, bf, size, ops); 50 } 51 52 static int call__parse(struct ins_operands *ops) 53 { 54 char *endptr, *tok, *name; 55 56 ops->target.addr = strtoull(ops->raw, &endptr, 16); 57 58 name = strchr(endptr, '<'); 59 if (name == NULL) 60 goto indirect_call; 61 62 name++; 63 64 tok = strchr(name, '>'); 65 if (tok == NULL) 66 return -1; 67 68 *tok = '\0'; 69 ops->target.name = strdup(name); 70 *tok = '>'; 71 72 return ops->target.name == NULL ? -1 : 0; 73 74 indirect_call: 75 tok = strchr(endptr, '('); 76 if (tok != NULL) { 77 ops->target.addr = 0; 78 return 0; 79 } 80 81 tok = strchr(endptr, '*'); 82 if (tok == NULL) 83 return -1; 84 85 ops->target.addr = strtoull(tok + 1, NULL, 16); 86 return 0; 87 } 88 89 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 90 struct ins_operands *ops) 91 { 92 if (ops->target.name) 93 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name); 94 95 if (ops->target.addr == 0) 96 return ins__raw_scnprintf(ins, bf, size, ops); 97 98 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr); 99 } 100 101 static struct ins_ops call_ops = { 102 .parse = call__parse, 103 .scnprintf = call__scnprintf, 104 }; 105 106 bool ins__is_call(const struct ins *ins) 107 { 108 return ins->ops == &call_ops; 109 } 110 111 static int jump__parse(struct ins_operands *ops) 112 { 113 const char *s = strchr(ops->raw, '+'); 114 115 ops->target.addr = strtoull(ops->raw, NULL, 16); 116 117 if (s++ != NULL) 118 ops->target.offset = strtoull(s, NULL, 16); 119 else 120 ops->target.offset = UINT64_MAX; 121 122 return 0; 123 } 124 125 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 126 struct ins_operands *ops) 127 { 128 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset); 129 } 130 131 static struct ins_ops jump_ops = { 132 .parse = jump__parse, 133 .scnprintf = jump__scnprintf, 134 }; 135 136 bool ins__is_jump(const struct ins *ins) 137 { 138 return ins->ops == &jump_ops; 139 } 140 141 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 142 { 143 char *endptr, *name, *t; 144 145 if (strstr(raw, "(%rip)") == NULL) 146 return 0; 147 148 *addrp = strtoull(comment, &endptr, 16); 149 name = strchr(endptr, '<'); 150 if (name == NULL) 151 return -1; 152 153 name++; 154 155 t = strchr(name, '>'); 156 if (t == NULL) 157 return 0; 158 159 *t = '\0'; 160 *namep = strdup(name); 161 *t = '>'; 162 163 return 0; 164 } 165 166 static int lock__parse(struct ins_operands *ops) 167 { 168 char *name; 169 170 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 171 if (ops->locked.ops == NULL) 172 return 0; 173 174 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0) 175 goto out_free_ops; 176 177 ops->locked.ins = ins__find(name); 178 if (ops->locked.ins == NULL) 179 goto out_free_ops; 180 181 if (!ops->locked.ins->ops) 182 return 0; 183 184 if (ops->locked.ins->ops->parse) 185 ops->locked.ins->ops->parse(ops->locked.ops); 186 187 return 0; 188 189 out_free_ops: 190 zfree(&ops->locked.ops); 191 return 0; 192 } 193 194 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 195 struct ins_operands *ops) 196 { 197 int printed; 198 199 if (ops->locked.ins == NULL) 200 return ins__raw_scnprintf(ins, bf, size, ops); 201 202 printed = scnprintf(bf, size, "%-6.6s ", ins->name); 203 return printed + ins__scnprintf(ops->locked.ins, bf + printed, 204 size - printed, ops->locked.ops); 205 } 206 207 static void lock__delete(struct ins_operands *ops) 208 { 209 zfree(&ops->locked.ops); 210 zfree(&ops->target.raw); 211 zfree(&ops->target.name); 212 } 213 214 static struct ins_ops lock_ops = { 215 .free = lock__delete, 216 .parse = lock__parse, 217 .scnprintf = lock__scnprintf, 218 }; 219 220 static int mov__parse(struct ins_operands *ops) 221 { 222 char *s = strchr(ops->raw, ','), *target, *comment, prev; 223 224 if (s == NULL) 225 return -1; 226 227 *s = '\0'; 228 ops->source.raw = strdup(ops->raw); 229 *s = ','; 230 231 if (ops->source.raw == NULL) 232 return -1; 233 234 target = ++s; 235 comment = strchr(s, '#'); 236 237 if (comment != NULL) 238 s = comment - 1; 239 else 240 s = strchr(s, '\0') - 1; 241 242 while (s > target && isspace(s[0])) 243 --s; 244 s++; 245 prev = *s; 246 *s = '\0'; 247 248 ops->target.raw = strdup(target); 249 *s = prev; 250 251 if (ops->target.raw == NULL) 252 goto out_free_source; 253 254 if (comment == NULL) 255 return 0; 256 257 while (comment[0] != '\0' && isspace(comment[0])) 258 ++comment; 259 260 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name); 261 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 262 263 return 0; 264 265 out_free_source: 266 zfree(&ops->source.raw); 267 return -1; 268 } 269 270 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 271 struct ins_operands *ops) 272 { 273 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name, 274 ops->source.name ?: ops->source.raw, 275 ops->target.name ?: ops->target.raw); 276 } 277 278 static struct ins_ops mov_ops = { 279 .parse = mov__parse, 280 .scnprintf = mov__scnprintf, 281 }; 282 283 static int dec__parse(struct ins_operands *ops) 284 { 285 char *target, *comment, *s, prev; 286 287 target = s = ops->raw; 288 289 while (s[0] != '\0' && !isspace(s[0])) 290 ++s; 291 prev = *s; 292 *s = '\0'; 293 294 ops->target.raw = strdup(target); 295 *s = prev; 296 297 if (ops->target.raw == NULL) 298 return -1; 299 300 comment = strchr(s, '#'); 301 if (comment == NULL) 302 return 0; 303 304 while (comment[0] != '\0' && isspace(comment[0])) 305 ++comment; 306 307 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 308 309 return 0; 310 } 311 312 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 313 struct ins_operands *ops) 314 { 315 return scnprintf(bf, size, "%-6.6s %s", ins->name, 316 ops->target.name ?: ops->target.raw); 317 } 318 319 static struct ins_ops dec_ops = { 320 .parse = dec__parse, 321 .scnprintf = dec__scnprintf, 322 }; 323 324 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 325 struct ins_operands *ops __maybe_unused) 326 { 327 return scnprintf(bf, size, "%-6.6s", "nop"); 328 } 329 330 static struct ins_ops nop_ops = { 331 .scnprintf = nop__scnprintf, 332 }; 333 334 /* 335 * Must be sorted by name! 336 */ 337 static struct ins instructions[] = { 338 { .name = "add", .ops = &mov_ops, }, 339 { .name = "addl", .ops = &mov_ops, }, 340 { .name = "addq", .ops = &mov_ops, }, 341 { .name = "addw", .ops = &mov_ops, }, 342 { .name = "and", .ops = &mov_ops, }, 343 { .name = "bts", .ops = &mov_ops, }, 344 { .name = "call", .ops = &call_ops, }, 345 { .name = "callq", .ops = &call_ops, }, 346 { .name = "cmp", .ops = &mov_ops, }, 347 { .name = "cmpb", .ops = &mov_ops, }, 348 { .name = "cmpl", .ops = &mov_ops, }, 349 { .name = "cmpq", .ops = &mov_ops, }, 350 { .name = "cmpw", .ops = &mov_ops, }, 351 { .name = "cmpxch", .ops = &mov_ops, }, 352 { .name = "dec", .ops = &dec_ops, }, 353 { .name = "decl", .ops = &dec_ops, }, 354 { .name = "imul", .ops = &mov_ops, }, 355 { .name = "inc", .ops = &dec_ops, }, 356 { .name = "incl", .ops = &dec_ops, }, 357 { .name = "ja", .ops = &jump_ops, }, 358 { .name = "jae", .ops = &jump_ops, }, 359 { .name = "jb", .ops = &jump_ops, }, 360 { .name = "jbe", .ops = &jump_ops, }, 361 { .name = "jc", .ops = &jump_ops, }, 362 { .name = "jcxz", .ops = &jump_ops, }, 363 { .name = "je", .ops = &jump_ops, }, 364 { .name = "jecxz", .ops = &jump_ops, }, 365 { .name = "jg", .ops = &jump_ops, }, 366 { .name = "jge", .ops = &jump_ops, }, 367 { .name = "jl", .ops = &jump_ops, }, 368 { .name = "jle", .ops = &jump_ops, }, 369 { .name = "jmp", .ops = &jump_ops, }, 370 { .name = "jmpq", .ops = &jump_ops, }, 371 { .name = "jna", .ops = &jump_ops, }, 372 { .name = "jnae", .ops = &jump_ops, }, 373 { .name = "jnb", .ops = &jump_ops, }, 374 { .name = "jnbe", .ops = &jump_ops, }, 375 { .name = "jnc", .ops = &jump_ops, }, 376 { .name = "jne", .ops = &jump_ops, }, 377 { .name = "jng", .ops = &jump_ops, }, 378 { .name = "jnge", .ops = &jump_ops, }, 379 { .name = "jnl", .ops = &jump_ops, }, 380 { .name = "jnle", .ops = &jump_ops, }, 381 { .name = "jno", .ops = &jump_ops, }, 382 { .name = "jnp", .ops = &jump_ops, }, 383 { .name = "jns", .ops = &jump_ops, }, 384 { .name = "jnz", .ops = &jump_ops, }, 385 { .name = "jo", .ops = &jump_ops, }, 386 { .name = "jp", .ops = &jump_ops, }, 387 { .name = "jpe", .ops = &jump_ops, }, 388 { .name = "jpo", .ops = &jump_ops, }, 389 { .name = "jrcxz", .ops = &jump_ops, }, 390 { .name = "js", .ops = &jump_ops, }, 391 { .name = "jz", .ops = &jump_ops, }, 392 { .name = "lea", .ops = &mov_ops, }, 393 { .name = "lock", .ops = &lock_ops, }, 394 { .name = "mov", .ops = &mov_ops, }, 395 { .name = "movb", .ops = &mov_ops, }, 396 { .name = "movdqa",.ops = &mov_ops, }, 397 { .name = "movl", .ops = &mov_ops, }, 398 { .name = "movq", .ops = &mov_ops, }, 399 { .name = "movslq", .ops = &mov_ops, }, 400 { .name = "movzbl", .ops = &mov_ops, }, 401 { .name = "movzwl", .ops = &mov_ops, }, 402 { .name = "nop", .ops = &nop_ops, }, 403 { .name = "nopl", .ops = &nop_ops, }, 404 { .name = "nopw", .ops = &nop_ops, }, 405 { .name = "or", .ops = &mov_ops, }, 406 { .name = "orl", .ops = &mov_ops, }, 407 { .name = "test", .ops = &mov_ops, }, 408 { .name = "testb", .ops = &mov_ops, }, 409 { .name = "testl", .ops = &mov_ops, }, 410 { .name = "xadd", .ops = &mov_ops, }, 411 { .name = "xbeginl", .ops = &jump_ops, }, 412 { .name = "xbeginq", .ops = &jump_ops, }, 413 }; 414 415 static int ins__cmp(const void *name, const void *insp) 416 { 417 const struct ins *ins = insp; 418 419 return strcmp(name, ins->name); 420 } 421 422 static struct ins *ins__find(const char *name) 423 { 424 const int nmemb = ARRAY_SIZE(instructions); 425 426 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp); 427 } 428 429 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym) 430 { 431 struct annotation *notes = symbol__annotation(sym); 432 pthread_mutex_init(¬es->lock, NULL); 433 return 0; 434 } 435 436 int symbol__alloc_hist(struct symbol *sym) 437 { 438 struct annotation *notes = symbol__annotation(sym); 439 const size_t size = symbol__size(sym); 440 size_t sizeof_sym_hist; 441 442 /* Check for overflow when calculating sizeof_sym_hist */ 443 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64)) 444 return -1; 445 446 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64)); 447 448 /* Check for overflow in zalloc argument */ 449 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src)) 450 / symbol_conf.nr_events) 451 return -1; 452 453 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist); 454 if (notes->src == NULL) 455 return -1; 456 notes->src->sizeof_sym_hist = sizeof_sym_hist; 457 notes->src->nr_histograms = symbol_conf.nr_events; 458 INIT_LIST_HEAD(¬es->src->source); 459 return 0; 460 } 461 462 void symbol__annotate_zero_histograms(struct symbol *sym) 463 { 464 struct annotation *notes = symbol__annotation(sym); 465 466 pthread_mutex_lock(¬es->lock); 467 if (notes->src != NULL) 468 memset(notes->src->histograms, 0, 469 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 470 pthread_mutex_unlock(¬es->lock); 471 } 472 473 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map, 474 struct annotation *notes, int evidx, u64 addr) 475 { 476 unsigned offset; 477 struct sym_hist *h; 478 479 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 480 481 if (addr < sym->start || addr >= sym->end) 482 return -ERANGE; 483 484 offset = addr - sym->start; 485 h = annotation__histogram(notes, evidx); 486 h->sum++; 487 h->addr[offset]++; 488 489 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 490 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name, 491 addr, addr - sym->start, evidx, h->addr[offset]); 492 return 0; 493 } 494 495 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map, 496 int evidx, u64 addr) 497 { 498 struct annotation *notes; 499 500 if (sym == NULL) 501 return 0; 502 503 notes = symbol__annotation(sym); 504 if (notes->src == NULL) { 505 if (symbol__alloc_hist(sym) < 0) 506 return -ENOMEM; 507 } 508 509 return __symbol__inc_addr_samples(sym, map, notes, evidx, addr); 510 } 511 512 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx) 513 { 514 return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr); 515 } 516 517 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip) 518 { 519 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip); 520 } 521 522 static void disasm_line__init_ins(struct disasm_line *dl) 523 { 524 dl->ins = ins__find(dl->name); 525 526 if (dl->ins == NULL) 527 return; 528 529 if (!dl->ins->ops) 530 return; 531 532 if (dl->ins->ops->parse) 533 dl->ins->ops->parse(&dl->ops); 534 } 535 536 static int disasm_line__parse(char *line, char **namep, char **rawp) 537 { 538 char *name = line, tmp; 539 540 while (isspace(name[0])) 541 ++name; 542 543 if (name[0] == '\0') 544 return -1; 545 546 *rawp = name + 1; 547 548 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 549 ++*rawp; 550 551 tmp = (*rawp)[0]; 552 (*rawp)[0] = '\0'; 553 *namep = strdup(name); 554 555 if (*namep == NULL) 556 goto out_free_name; 557 558 (*rawp)[0] = tmp; 559 560 if ((*rawp)[0] != '\0') { 561 (*rawp)++; 562 while (isspace((*rawp)[0])) 563 ++(*rawp); 564 } 565 566 return 0; 567 568 out_free_name: 569 zfree(namep); 570 return -1; 571 } 572 573 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize) 574 { 575 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); 576 577 if (dl != NULL) { 578 dl->offset = offset; 579 dl->line = strdup(line); 580 if (dl->line == NULL) 581 goto out_delete; 582 583 if (offset != -1) { 584 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0) 585 goto out_free_line; 586 587 disasm_line__init_ins(dl); 588 } 589 } 590 591 return dl; 592 593 out_free_line: 594 zfree(&dl->line); 595 out_delete: 596 free(dl); 597 return NULL; 598 } 599 600 void disasm_line__free(struct disasm_line *dl) 601 { 602 zfree(&dl->line); 603 zfree(&dl->name); 604 if (dl->ins && dl->ins->ops->free) 605 dl->ins->ops->free(&dl->ops); 606 else 607 ins__delete(&dl->ops); 608 free(dl); 609 } 610 611 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw) 612 { 613 if (raw || !dl->ins) 614 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw); 615 616 return ins__scnprintf(dl->ins, bf, size, &dl->ops); 617 } 618 619 static void disasm__add(struct list_head *head, struct disasm_line *line) 620 { 621 list_add_tail(&line->node, head); 622 } 623 624 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos) 625 { 626 list_for_each_entry_continue(pos, head, node) 627 if (pos->offset >= 0) 628 return pos; 629 630 return NULL; 631 } 632 633 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, 634 s64 end, const char **path) 635 { 636 struct source_line *src_line = notes->src->lines; 637 double percent = 0.0; 638 639 if (src_line) { 640 size_t sizeof_src_line = sizeof(*src_line) + 641 sizeof(src_line->p) * (src_line->nr_pcnt - 1); 642 643 while (offset < end) { 644 src_line = (void *)notes->src->lines + 645 (sizeof_src_line * offset); 646 647 if (*path == NULL) 648 *path = src_line->path; 649 650 percent += src_line->p[evidx].percent; 651 offset++; 652 } 653 } else { 654 struct sym_hist *h = annotation__histogram(notes, evidx); 655 unsigned int hits = 0; 656 657 while (offset < end) 658 hits += h->addr[offset++]; 659 660 if (h->sum) 661 percent = 100.0 * hits / h->sum; 662 } 663 664 return percent; 665 } 666 667 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start, 668 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed, 669 int max_lines, struct disasm_line *queue) 670 { 671 static const char *prev_line; 672 static const char *prev_color; 673 674 if (dl->offset != -1) { 675 const char *path = NULL; 676 double percent, max_percent = 0.0; 677 double *ppercents = &percent; 678 int i, nr_percent = 1; 679 const char *color; 680 struct annotation *notes = symbol__annotation(sym); 681 s64 offset = dl->offset; 682 const u64 addr = start + offset; 683 struct disasm_line *next; 684 685 next = disasm__get_next_ip_line(¬es->src->source, dl); 686 687 if (perf_evsel__is_group_event(evsel)) { 688 nr_percent = evsel->nr_members; 689 ppercents = calloc(nr_percent, sizeof(double)); 690 if (ppercents == NULL) 691 return -1; 692 } 693 694 for (i = 0; i < nr_percent; i++) { 695 percent = disasm__calc_percent(notes, 696 notes->src->lines ? i : evsel->idx + i, 697 offset, 698 next ? next->offset : (s64) len, 699 &path); 700 701 ppercents[i] = percent; 702 if (percent > max_percent) 703 max_percent = percent; 704 } 705 706 if (max_percent < min_pcnt) 707 return -1; 708 709 if (max_lines && printed >= max_lines) 710 return 1; 711 712 if (queue != NULL) { 713 list_for_each_entry_from(queue, ¬es->src->source, node) { 714 if (queue == dl) 715 break; 716 disasm_line__print(queue, sym, start, evsel, len, 717 0, 0, 1, NULL); 718 } 719 } 720 721 color = get_percent_color(max_percent); 722 723 /* 724 * Also color the filename and line if needed, with 725 * the same color than the percentage. Don't print it 726 * twice for close colored addr with the same filename:line 727 */ 728 if (path) { 729 if (!prev_line || strcmp(prev_line, path) 730 || color != prev_color) { 731 color_fprintf(stdout, color, " %s", path); 732 prev_line = path; 733 prev_color = color; 734 } 735 } 736 737 for (i = 0; i < nr_percent; i++) { 738 percent = ppercents[i]; 739 color = get_percent_color(percent); 740 color_fprintf(stdout, color, " %7.2f", percent); 741 } 742 743 printf(" : "); 744 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr); 745 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line); 746 747 if (ppercents != &percent) 748 free(ppercents); 749 750 } else if (max_lines && printed >= max_lines) 751 return 1; 752 else { 753 int width = 8; 754 755 if (queue) 756 return -1; 757 758 if (perf_evsel__is_group_event(evsel)) 759 width *= evsel->nr_members; 760 761 if (!*dl->line) 762 printf(" %*s:\n", width, " "); 763 else 764 printf(" %*s: %s\n", width, " ", dl->line); 765 } 766 767 return 0; 768 } 769 770 /* 771 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 772 * which looks like following 773 * 774 * 0000000000415500 <_init>: 775 * 415500: sub $0x8,%rsp 776 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 777 * 41550b: test %rax,%rax 778 * 41550e: je 415515 <_init+0x15> 779 * 415510: callq 416e70 <__gmon_start__@plt> 780 * 415515: add $0x8,%rsp 781 * 415519: retq 782 * 783 * it will be parsed and saved into struct disasm_line as 784 * <offset> <name> <ops.raw> 785 * 786 * The offset will be a relative offset from the start of the symbol and -1 787 * means that it's not a disassembly line so should be treated differently. 788 * The ops.raw part will be parsed further according to type of the instruction. 789 */ 790 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, 791 FILE *file, size_t privsize) 792 { 793 struct annotation *notes = symbol__annotation(sym); 794 struct disasm_line *dl; 795 char *line = NULL, *parsed_line, *tmp, *tmp2, *c; 796 size_t line_len; 797 s64 line_ip, offset = -1; 798 799 if (getline(&line, &line_len, file) < 0) 800 return -1; 801 802 if (!line) 803 return -1; 804 805 while (line_len != 0 && isspace(line[line_len - 1])) 806 line[--line_len] = '\0'; 807 808 c = strchr(line, '\n'); 809 if (c) 810 *c = 0; 811 812 line_ip = -1; 813 parsed_line = line; 814 815 /* 816 * Strip leading spaces: 817 */ 818 tmp = line; 819 while (*tmp) { 820 if (*tmp != ' ') 821 break; 822 tmp++; 823 } 824 825 if (*tmp) { 826 /* 827 * Parse hexa addresses followed by ':' 828 */ 829 line_ip = strtoull(tmp, &tmp2, 16); 830 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0') 831 line_ip = -1; 832 } 833 834 if (line_ip != -1) { 835 u64 start = map__rip_2objdump(map, sym->start), 836 end = map__rip_2objdump(map, sym->end); 837 838 offset = line_ip - start; 839 if ((u64)line_ip < start || (u64)line_ip >= end) 840 offset = -1; 841 else 842 parsed_line = tmp2 + 1; 843 } 844 845 dl = disasm_line__new(offset, parsed_line, privsize); 846 free(line); 847 848 if (dl == NULL) 849 return -1; 850 851 if (dl->ops.target.offset == UINT64_MAX) 852 dl->ops.target.offset = dl->ops.target.addr - 853 map__rip_2objdump(map, sym->start); 854 855 /* kcore has no symbols, so add the call target name */ 856 if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) { 857 struct addr_map_symbol target = { 858 .map = map, 859 .addr = dl->ops.target.addr, 860 }; 861 862 if (!map_groups__find_ams(&target, NULL) && 863 target.sym->start == target.al_addr) 864 dl->ops.target.name = strdup(target.sym->name); 865 } 866 867 disasm__add(¬es->src->source, dl); 868 869 return 0; 870 } 871 872 static void delete_last_nop(struct symbol *sym) 873 { 874 struct annotation *notes = symbol__annotation(sym); 875 struct list_head *list = ¬es->src->source; 876 struct disasm_line *dl; 877 878 while (!list_empty(list)) { 879 dl = list_entry(list->prev, struct disasm_line, node); 880 881 if (dl->ins && dl->ins->ops) { 882 if (dl->ins->ops != &nop_ops) 883 return; 884 } else { 885 if (!strstr(dl->line, " nop ") && 886 !strstr(dl->line, " nopl ") && 887 !strstr(dl->line, " nopw ")) 888 return; 889 } 890 891 list_del(&dl->node); 892 disasm_line__free(dl); 893 } 894 } 895 896 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize) 897 { 898 struct dso *dso = map->dso; 899 char *filename = dso__build_id_filename(dso, NULL, 0); 900 bool free_filename = true; 901 char command[PATH_MAX * 2]; 902 FILE *file; 903 int err = 0; 904 char symfs_filename[PATH_MAX]; 905 struct kcore_extract kce; 906 bool delete_extract = false; 907 908 if (filename) 909 symbol__join_symfs(symfs_filename, filename); 910 911 if (filename == NULL) { 912 if (dso->has_build_id) { 913 pr_err("Can't annotate %s: not enough memory\n", 914 sym->name); 915 return -ENOMEM; 916 } 917 goto fallback; 918 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 || 919 strstr(command, "[kernel.kallsyms]") || 920 access(symfs_filename, R_OK)) { 921 free(filename); 922 fallback: 923 /* 924 * If we don't have build-ids or the build-id file isn't in the 925 * cache, or is just a kallsyms file, well, lets hope that this 926 * DSO is the same as when 'perf record' ran. 927 */ 928 filename = (char *)dso->long_name; 929 symbol__join_symfs(symfs_filename, filename); 930 free_filename = false; 931 } 932 933 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 934 !dso__is_kcore(dso)) { 935 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id "; 936 char *build_id_msg = NULL; 937 938 if (dso->annotate_warned) 939 goto out_free_filename; 940 941 if (dso->has_build_id) { 942 build_id__sprintf(dso->build_id, 943 sizeof(dso->build_id), bf + 15); 944 build_id_msg = bf; 945 } 946 err = -ENOENT; 947 dso->annotate_warned = 1; 948 pr_err("Can't annotate %s:\n\n" 949 "No vmlinux file%s\nwas found in the path.\n\n" 950 "Please use:\n\n" 951 " perf buildid-cache -vu vmlinux\n\n" 952 "or:\n\n" 953 " --vmlinux vmlinux\n", 954 sym->name, build_id_msg ?: ""); 955 goto out_free_filename; 956 } 957 958 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 959 filename, sym->name, map->unmap_ip(map, sym->start), 960 map->unmap_ip(map, sym->end)); 961 962 pr_debug("annotating [%p] %30s : [%p] %30s\n", 963 dso, dso->long_name, sym, sym->name); 964 965 if (dso__is_kcore(dso)) { 966 kce.kcore_filename = symfs_filename; 967 kce.addr = map__rip_2objdump(map, sym->start); 968 kce.offs = sym->start; 969 kce.len = sym->end - sym->start; 970 if (!kcore_extract__create(&kce)) { 971 delete_extract = true; 972 strlcpy(symfs_filename, kce.extract_filename, 973 sizeof(symfs_filename)); 974 if (free_filename) { 975 free(filename); 976 free_filename = false; 977 } 978 filename = symfs_filename; 979 } 980 } 981 982 snprintf(command, sizeof(command), 983 "%s %s%s --start-address=0x%016" PRIx64 984 " --stop-address=0x%016" PRIx64 985 " -d %s %s -C %s 2>/dev/null|grep -v %s|expand", 986 objdump_path ? objdump_path : "objdump", 987 disassembler_style ? "-M " : "", 988 disassembler_style ? disassembler_style : "", 989 map__rip_2objdump(map, sym->start), 990 map__rip_2objdump(map, sym->end), 991 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw", 992 symbol_conf.annotate_src ? "-S" : "", 993 symfs_filename, filename); 994 995 pr_debug("Executing: %s\n", command); 996 997 file = popen(command, "r"); 998 if (!file) 999 goto out_free_filename; 1000 1001 while (!feof(file)) 1002 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0) 1003 break; 1004 1005 /* 1006 * kallsyms does not have symbol sizes so there may a nop at the end. 1007 * Remove it. 1008 */ 1009 if (dso__is_kcore(dso)) 1010 delete_last_nop(sym); 1011 1012 pclose(file); 1013 out_free_filename: 1014 if (delete_extract) 1015 kcore_extract__delete(&kce); 1016 if (free_filename) 1017 free(filename); 1018 return err; 1019 } 1020 1021 static void insert_source_line(struct rb_root *root, struct source_line *src_line) 1022 { 1023 struct source_line *iter; 1024 struct rb_node **p = &root->rb_node; 1025 struct rb_node *parent = NULL; 1026 int i, ret; 1027 1028 while (*p != NULL) { 1029 parent = *p; 1030 iter = rb_entry(parent, struct source_line, node); 1031 1032 ret = strcmp(iter->path, src_line->path); 1033 if (ret == 0) { 1034 for (i = 0; i < src_line->nr_pcnt; i++) 1035 iter->p[i].percent_sum += src_line->p[i].percent; 1036 return; 1037 } 1038 1039 if (ret < 0) 1040 p = &(*p)->rb_left; 1041 else 1042 p = &(*p)->rb_right; 1043 } 1044 1045 for (i = 0; i < src_line->nr_pcnt; i++) 1046 src_line->p[i].percent_sum = src_line->p[i].percent; 1047 1048 rb_link_node(&src_line->node, parent, p); 1049 rb_insert_color(&src_line->node, root); 1050 } 1051 1052 static int cmp_source_line(struct source_line *a, struct source_line *b) 1053 { 1054 int i; 1055 1056 for (i = 0; i < a->nr_pcnt; i++) { 1057 if (a->p[i].percent_sum == b->p[i].percent_sum) 1058 continue; 1059 return a->p[i].percent_sum > b->p[i].percent_sum; 1060 } 1061 1062 return 0; 1063 } 1064 1065 static void __resort_source_line(struct rb_root *root, struct source_line *src_line) 1066 { 1067 struct source_line *iter; 1068 struct rb_node **p = &root->rb_node; 1069 struct rb_node *parent = NULL; 1070 1071 while (*p != NULL) { 1072 parent = *p; 1073 iter = rb_entry(parent, struct source_line, node); 1074 1075 if (cmp_source_line(src_line, iter)) 1076 p = &(*p)->rb_left; 1077 else 1078 p = &(*p)->rb_right; 1079 } 1080 1081 rb_link_node(&src_line->node, parent, p); 1082 rb_insert_color(&src_line->node, root); 1083 } 1084 1085 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 1086 { 1087 struct source_line *src_line; 1088 struct rb_node *node; 1089 1090 node = rb_first(src_root); 1091 while (node) { 1092 struct rb_node *next; 1093 1094 src_line = rb_entry(node, struct source_line, node); 1095 next = rb_next(node); 1096 rb_erase(node, src_root); 1097 1098 __resort_source_line(dest_root, src_line); 1099 node = next; 1100 } 1101 } 1102 1103 static void symbol__free_source_line(struct symbol *sym, int len) 1104 { 1105 struct annotation *notes = symbol__annotation(sym); 1106 struct source_line *src_line = notes->src->lines; 1107 size_t sizeof_src_line; 1108 int i; 1109 1110 sizeof_src_line = sizeof(*src_line) + 1111 (sizeof(src_line->p) * (src_line->nr_pcnt - 1)); 1112 1113 for (i = 0; i < len; i++) { 1114 free_srcline(src_line->path); 1115 src_line = (void *)src_line + sizeof_src_line; 1116 } 1117 1118 zfree(¬es->src->lines); 1119 } 1120 1121 /* Get the filename:line for the colored entries */ 1122 static int symbol__get_source_line(struct symbol *sym, struct map *map, 1123 struct perf_evsel *evsel, 1124 struct rb_root *root, int len) 1125 { 1126 u64 start; 1127 int i, k; 1128 int evidx = evsel->idx; 1129 struct source_line *src_line; 1130 struct annotation *notes = symbol__annotation(sym); 1131 struct sym_hist *h = annotation__histogram(notes, evidx); 1132 struct rb_root tmp_root = RB_ROOT; 1133 int nr_pcnt = 1; 1134 u64 h_sum = h->sum; 1135 size_t sizeof_src_line = sizeof(struct source_line); 1136 1137 if (perf_evsel__is_group_event(evsel)) { 1138 for (i = 1; i < evsel->nr_members; i++) { 1139 h = annotation__histogram(notes, evidx + i); 1140 h_sum += h->sum; 1141 } 1142 nr_pcnt = evsel->nr_members; 1143 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p); 1144 } 1145 1146 if (!h_sum) 1147 return 0; 1148 1149 src_line = notes->src->lines = calloc(len, sizeof_src_line); 1150 if (!notes->src->lines) 1151 return -1; 1152 1153 start = map__rip_2objdump(map, sym->start); 1154 1155 for (i = 0; i < len; i++) { 1156 u64 offset; 1157 double percent_max = 0.0; 1158 1159 src_line->nr_pcnt = nr_pcnt; 1160 1161 for (k = 0; k < nr_pcnt; k++) { 1162 h = annotation__histogram(notes, evidx + k); 1163 src_line->p[k].percent = 100.0 * h->addr[i] / h->sum; 1164 1165 if (src_line->p[k].percent > percent_max) 1166 percent_max = src_line->p[k].percent; 1167 } 1168 1169 if (percent_max <= 0.5) 1170 goto next; 1171 1172 offset = start + i; 1173 src_line->path = get_srcline(map->dso, offset); 1174 insert_source_line(&tmp_root, src_line); 1175 1176 next: 1177 src_line = (void *)src_line + sizeof_src_line; 1178 } 1179 1180 resort_source_line(root, &tmp_root); 1181 return 0; 1182 } 1183 1184 static void print_summary(struct rb_root *root, const char *filename) 1185 { 1186 struct source_line *src_line; 1187 struct rb_node *node; 1188 1189 printf("\nSorted summary for file %s\n", filename); 1190 printf("----------------------------------------------\n\n"); 1191 1192 if (RB_EMPTY_ROOT(root)) { 1193 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 1194 return; 1195 } 1196 1197 node = rb_first(root); 1198 while (node) { 1199 double percent, percent_max = 0.0; 1200 const char *color; 1201 char *path; 1202 int i; 1203 1204 src_line = rb_entry(node, struct source_line, node); 1205 for (i = 0; i < src_line->nr_pcnt; i++) { 1206 percent = src_line->p[i].percent_sum; 1207 color = get_percent_color(percent); 1208 color_fprintf(stdout, color, " %7.2f", percent); 1209 1210 if (percent > percent_max) 1211 percent_max = percent; 1212 } 1213 1214 path = src_line->path; 1215 color = get_percent_color(percent_max); 1216 color_fprintf(stdout, color, " %s\n", path); 1217 1218 node = rb_next(node); 1219 } 1220 } 1221 1222 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) 1223 { 1224 struct annotation *notes = symbol__annotation(sym); 1225 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 1226 u64 len = symbol__size(sym), offset; 1227 1228 for (offset = 0; offset < len; ++offset) 1229 if (h->addr[offset] != 0) 1230 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 1231 sym->start + offset, h->addr[offset]); 1232 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum); 1233 } 1234 1235 int symbol__annotate_printf(struct symbol *sym, struct map *map, 1236 struct perf_evsel *evsel, bool full_paths, 1237 int min_pcnt, int max_lines, int context) 1238 { 1239 struct dso *dso = map->dso; 1240 char *filename; 1241 const char *d_filename; 1242 const char *evsel_name = perf_evsel__name(evsel); 1243 struct annotation *notes = symbol__annotation(sym); 1244 struct disasm_line *pos, *queue = NULL; 1245 u64 start = map__rip_2objdump(map, sym->start); 1246 int printed = 2, queue_len = 0; 1247 int more = 0; 1248 u64 len; 1249 int width = 8; 1250 int namelen, evsel_name_len, graph_dotted_len; 1251 1252 filename = strdup(dso->long_name); 1253 if (!filename) 1254 return -ENOMEM; 1255 1256 if (full_paths) 1257 d_filename = filename; 1258 else 1259 d_filename = basename(filename); 1260 1261 len = symbol__size(sym); 1262 namelen = strlen(d_filename); 1263 evsel_name_len = strlen(evsel_name); 1264 1265 if (perf_evsel__is_group_event(evsel)) 1266 width *= evsel->nr_members; 1267 1268 printf(" %-*.*s| Source code & Disassembly of %s for %s\n", 1269 width, width, "Percent", d_filename, evsel_name); 1270 1271 graph_dotted_len = width + namelen + evsel_name_len; 1272 printf("-%-*.*s-----------------------------------------\n", 1273 graph_dotted_len, graph_dotted_len, graph_dotted_line); 1274 1275 if (verbose) 1276 symbol__annotate_hits(sym, evsel); 1277 1278 list_for_each_entry(pos, ¬es->src->source, node) { 1279 if (context && queue == NULL) { 1280 queue = pos; 1281 queue_len = 0; 1282 } 1283 1284 switch (disasm_line__print(pos, sym, start, evsel, len, 1285 min_pcnt, printed, max_lines, 1286 queue)) { 1287 case 0: 1288 ++printed; 1289 if (context) { 1290 printed += queue_len; 1291 queue = NULL; 1292 queue_len = 0; 1293 } 1294 break; 1295 case 1: 1296 /* filtered by max_lines */ 1297 ++more; 1298 break; 1299 case -1: 1300 default: 1301 /* 1302 * Filtered by min_pcnt or non IP lines when 1303 * context != 0 1304 */ 1305 if (!context) 1306 break; 1307 if (queue_len == context) 1308 queue = list_entry(queue->node.next, typeof(*queue), node); 1309 else 1310 ++queue_len; 1311 break; 1312 } 1313 } 1314 1315 free(filename); 1316 1317 return more; 1318 } 1319 1320 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 1321 { 1322 struct annotation *notes = symbol__annotation(sym); 1323 struct sym_hist *h = annotation__histogram(notes, evidx); 1324 1325 memset(h, 0, notes->src->sizeof_sym_hist); 1326 } 1327 1328 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 1329 { 1330 struct annotation *notes = symbol__annotation(sym); 1331 struct sym_hist *h = annotation__histogram(notes, evidx); 1332 int len = symbol__size(sym), offset; 1333 1334 h->sum = 0; 1335 for (offset = 0; offset < len; ++offset) { 1336 h->addr[offset] = h->addr[offset] * 7 / 8; 1337 h->sum += h->addr[offset]; 1338 } 1339 } 1340 1341 void disasm__purge(struct list_head *head) 1342 { 1343 struct disasm_line *pos, *n; 1344 1345 list_for_each_entry_safe(pos, n, head, node) { 1346 list_del(&pos->node); 1347 disasm_line__free(pos); 1348 } 1349 } 1350 1351 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 1352 { 1353 size_t printed; 1354 1355 if (dl->offset == -1) 1356 return fprintf(fp, "%s\n", dl->line); 1357 1358 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name); 1359 1360 if (dl->ops.raw[0] != '\0') { 1361 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 1362 dl->ops.raw); 1363 } 1364 1365 return printed + fprintf(fp, "\n"); 1366 } 1367 1368 size_t disasm__fprintf(struct list_head *head, FILE *fp) 1369 { 1370 struct disasm_line *pos; 1371 size_t printed = 0; 1372 1373 list_for_each_entry(pos, head, node) 1374 printed += disasm_line__fprintf(pos, fp); 1375 1376 return printed; 1377 } 1378 1379 int symbol__tty_annotate(struct symbol *sym, struct map *map, 1380 struct perf_evsel *evsel, bool print_lines, 1381 bool full_paths, int min_pcnt, int max_lines) 1382 { 1383 struct dso *dso = map->dso; 1384 struct rb_root source_line = RB_ROOT; 1385 u64 len; 1386 1387 if (symbol__annotate(sym, map, 0) < 0) 1388 return -1; 1389 1390 len = symbol__size(sym); 1391 1392 if (print_lines) { 1393 symbol__get_source_line(sym, map, evsel, &source_line, len); 1394 print_summary(&source_line, dso->long_name); 1395 } 1396 1397 symbol__annotate_printf(sym, map, evsel, full_paths, 1398 min_pcnt, max_lines, 0); 1399 if (print_lines) 1400 symbol__free_source_line(sym, len); 1401 1402 disasm__purge(&symbol__annotation(sym)->src->source); 1403 1404 return 0; 1405 } 1406 1407 int hist_entry__annotate(struct hist_entry *he, size_t privsize) 1408 { 1409 return symbol__annotate(he->ms.sym, he->ms.map, privsize); 1410 } 1411 1412 bool ui__has_annotation(void) 1413 { 1414 return use_browser == 1 && sort__has_sym; 1415 } 1416