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