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 <errno.h> 11 #include <inttypes.h> 12 #include "util.h" 13 #include "ui/ui.h" 14 #include "sort.h" 15 #include "build-id.h" 16 #include "color.h" 17 #include "cache.h" 18 #include "symbol.h" 19 #include "debug.h" 20 #include "annotate.h" 21 #include "evsel.h" 22 #include "block-range.h" 23 #include "string2.h" 24 #include "arch/common.h" 25 #include <regex.h> 26 #include <pthread.h> 27 #include <linux/bitops.h> 28 #include <linux/kernel.h> 29 #include <sys/utsname.h> 30 31 #include "sane_ctype.h" 32 33 const char *disassembler_style; 34 const char *objdump_path; 35 static regex_t file_lineno; 36 37 static struct ins_ops *ins__find(struct arch *arch, const char *name); 38 static void ins__sort(struct arch *arch); 39 static int disasm_line__parse(char *line, const char **namep, char **rawp); 40 41 struct arch { 42 const char *name; 43 struct ins *instructions; 44 size_t nr_instructions; 45 size_t nr_instructions_allocated; 46 struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name); 47 bool sorted_instructions; 48 bool initialized; 49 void *priv; 50 unsigned int model; 51 unsigned int family; 52 int (*init)(struct arch *arch, char *cpuid); 53 bool (*ins_is_fused)(struct arch *arch, const char *ins1, 54 const char *ins2); 55 struct { 56 char comment_char; 57 char skip_functions_char; 58 } objdump; 59 }; 60 61 static struct ins_ops call_ops; 62 static struct ins_ops dec_ops; 63 static struct ins_ops jump_ops; 64 static struct ins_ops mov_ops; 65 static struct ins_ops nop_ops; 66 static struct ins_ops lock_ops; 67 static struct ins_ops ret_ops; 68 69 static int arch__grow_instructions(struct arch *arch) 70 { 71 struct ins *new_instructions; 72 size_t new_nr_allocated; 73 74 if (arch->nr_instructions_allocated == 0 && arch->instructions) 75 goto grow_from_non_allocated_table; 76 77 new_nr_allocated = arch->nr_instructions_allocated + 128; 78 new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins)); 79 if (new_instructions == NULL) 80 return -1; 81 82 out_update_instructions: 83 arch->instructions = new_instructions; 84 arch->nr_instructions_allocated = new_nr_allocated; 85 return 0; 86 87 grow_from_non_allocated_table: 88 new_nr_allocated = arch->nr_instructions + 128; 89 new_instructions = calloc(new_nr_allocated, sizeof(struct ins)); 90 if (new_instructions == NULL) 91 return -1; 92 93 memcpy(new_instructions, arch->instructions, arch->nr_instructions); 94 goto out_update_instructions; 95 } 96 97 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops) 98 { 99 struct ins *ins; 100 101 if (arch->nr_instructions == arch->nr_instructions_allocated && 102 arch__grow_instructions(arch)) 103 return -1; 104 105 ins = &arch->instructions[arch->nr_instructions]; 106 ins->name = strdup(name); 107 if (!ins->name) 108 return -1; 109 110 ins->ops = ops; 111 arch->nr_instructions++; 112 113 ins__sort(arch); 114 return 0; 115 } 116 117 #include "arch/arm/annotate/instructions.c" 118 #include "arch/arm64/annotate/instructions.c" 119 #include "arch/x86/annotate/instructions.c" 120 #include "arch/powerpc/annotate/instructions.c" 121 #include "arch/s390/annotate/instructions.c" 122 123 static struct arch architectures[] = { 124 { 125 .name = "arm", 126 .init = arm__annotate_init, 127 }, 128 { 129 .name = "arm64", 130 .init = arm64__annotate_init, 131 }, 132 { 133 .name = "x86", 134 .init = x86__annotate_init, 135 .instructions = x86__instructions, 136 .nr_instructions = ARRAY_SIZE(x86__instructions), 137 .ins_is_fused = x86__ins_is_fused, 138 .objdump = { 139 .comment_char = '#', 140 }, 141 }, 142 { 143 .name = "powerpc", 144 .init = powerpc__annotate_init, 145 }, 146 { 147 .name = "s390", 148 .init = s390__annotate_init, 149 .objdump = { 150 .comment_char = '#', 151 }, 152 }, 153 }; 154 155 static void ins__delete(struct ins_operands *ops) 156 { 157 if (ops == NULL) 158 return; 159 zfree(&ops->source.raw); 160 zfree(&ops->source.name); 161 zfree(&ops->target.raw); 162 zfree(&ops->target.name); 163 } 164 165 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 166 struct ins_operands *ops) 167 { 168 return scnprintf(bf, size, "%-6s %s", ins->name, ops->raw); 169 } 170 171 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 172 struct ins_operands *ops) 173 { 174 if (ins->ops->scnprintf) 175 return ins->ops->scnprintf(ins, bf, size, ops); 176 177 return ins__raw_scnprintf(ins, bf, size, ops); 178 } 179 180 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2) 181 { 182 if (!arch || !arch->ins_is_fused) 183 return false; 184 185 return arch->ins_is_fused(arch, ins1, ins2); 186 } 187 188 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map) 189 { 190 char *endptr, *tok, *name; 191 192 ops->target.addr = strtoull(ops->raw, &endptr, 16); 193 194 name = strchr(endptr, '<'); 195 if (name == NULL) 196 goto indirect_call; 197 198 name++; 199 200 if (arch->objdump.skip_functions_char && 201 strchr(name, arch->objdump.skip_functions_char)) 202 return -1; 203 204 tok = strchr(name, '>'); 205 if (tok == NULL) 206 return -1; 207 208 *tok = '\0'; 209 ops->target.name = strdup(name); 210 *tok = '>'; 211 212 return ops->target.name == NULL ? -1 : 0; 213 214 indirect_call: 215 tok = strchr(endptr, '*'); 216 if (tok == NULL) { 217 struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr)); 218 if (sym != NULL) 219 ops->target.name = strdup(sym->name); 220 else 221 ops->target.addr = 0; 222 return 0; 223 } 224 225 ops->target.addr = strtoull(tok + 1, NULL, 16); 226 return 0; 227 } 228 229 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 230 struct ins_operands *ops) 231 { 232 if (ops->target.name) 233 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.name); 234 235 if (ops->target.addr == 0) 236 return ins__raw_scnprintf(ins, bf, size, ops); 237 238 return scnprintf(bf, size, "%-6s *%" PRIx64, ins->name, ops->target.addr); 239 } 240 241 static struct ins_ops call_ops = { 242 .parse = call__parse, 243 .scnprintf = call__scnprintf, 244 }; 245 246 bool ins__is_call(const struct ins *ins) 247 { 248 return ins->ops == &call_ops; 249 } 250 251 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused) 252 { 253 const char *s = strchr(ops->raw, '+'); 254 const char *c = strchr(ops->raw, ','); 255 256 /* 257 * skip over possible up to 2 operands to get to address, e.g.: 258 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> 259 */ 260 if (c++ != NULL) { 261 ops->target.addr = strtoull(c, NULL, 16); 262 if (!ops->target.addr) { 263 c = strchr(c, ','); 264 if (c++ != NULL) 265 ops->target.addr = strtoull(c, NULL, 16); 266 } 267 } else { 268 ops->target.addr = strtoull(ops->raw, NULL, 16); 269 } 270 271 if (s++ != NULL) { 272 ops->target.offset = strtoull(s, NULL, 16); 273 ops->target.offset_avail = true; 274 } else { 275 ops->target.offset_avail = false; 276 } 277 278 return 0; 279 } 280 281 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 282 struct ins_operands *ops) 283 { 284 const char *c = strchr(ops->raw, ','); 285 286 if (!ops->target.addr || ops->target.offset < 0) 287 return ins__raw_scnprintf(ins, bf, size, ops); 288 289 if (c != NULL) { 290 const char *c2 = strchr(c + 1, ','); 291 292 /* check for 3-op insn */ 293 if (c2 != NULL) 294 c = c2; 295 c++; 296 297 /* mirror arch objdump's space-after-comma style */ 298 if (*c == ' ') 299 c++; 300 } 301 302 return scnprintf(bf, size, "%-6s %.*s%" PRIx64, 303 ins->name, c ? c - ops->raw : 0, ops->raw, 304 ops->target.offset); 305 } 306 307 static struct ins_ops jump_ops = { 308 .parse = jump__parse, 309 .scnprintf = jump__scnprintf, 310 }; 311 312 bool ins__is_jump(const struct ins *ins) 313 { 314 return ins->ops == &jump_ops; 315 } 316 317 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 318 { 319 char *endptr, *name, *t; 320 321 if (strstr(raw, "(%rip)") == NULL) 322 return 0; 323 324 *addrp = strtoull(comment, &endptr, 16); 325 name = strchr(endptr, '<'); 326 if (name == NULL) 327 return -1; 328 329 name++; 330 331 t = strchr(name, '>'); 332 if (t == NULL) 333 return 0; 334 335 *t = '\0'; 336 *namep = strdup(name); 337 *t = '>'; 338 339 return 0; 340 } 341 342 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map) 343 { 344 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 345 if (ops->locked.ops == NULL) 346 return 0; 347 348 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0) 349 goto out_free_ops; 350 351 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name); 352 353 if (ops->locked.ins.ops == NULL) 354 goto out_free_ops; 355 356 if (ops->locked.ins.ops->parse && 357 ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 0) 358 goto out_free_ops; 359 360 return 0; 361 362 out_free_ops: 363 zfree(&ops->locked.ops); 364 return 0; 365 } 366 367 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 368 struct ins_operands *ops) 369 { 370 int printed; 371 372 if (ops->locked.ins.ops == NULL) 373 return ins__raw_scnprintf(ins, bf, size, ops); 374 375 printed = scnprintf(bf, size, "%-6s ", ins->name); 376 return printed + ins__scnprintf(&ops->locked.ins, bf + printed, 377 size - printed, ops->locked.ops); 378 } 379 380 static void lock__delete(struct ins_operands *ops) 381 { 382 struct ins *ins = &ops->locked.ins; 383 384 if (ins->ops && ins->ops->free) 385 ins->ops->free(ops->locked.ops); 386 else 387 ins__delete(ops->locked.ops); 388 389 zfree(&ops->locked.ops); 390 zfree(&ops->target.raw); 391 zfree(&ops->target.name); 392 } 393 394 static struct ins_ops lock_ops = { 395 .free = lock__delete, 396 .parse = lock__parse, 397 .scnprintf = lock__scnprintf, 398 }; 399 400 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused) 401 { 402 char *s = strchr(ops->raw, ','), *target, *comment, prev; 403 404 if (s == NULL) 405 return -1; 406 407 *s = '\0'; 408 ops->source.raw = strdup(ops->raw); 409 *s = ','; 410 411 if (ops->source.raw == NULL) 412 return -1; 413 414 target = ++s; 415 comment = strchr(s, arch->objdump.comment_char); 416 417 if (comment != NULL) 418 s = comment - 1; 419 else 420 s = strchr(s, '\0') - 1; 421 422 while (s > target && isspace(s[0])) 423 --s; 424 s++; 425 prev = *s; 426 *s = '\0'; 427 428 ops->target.raw = strdup(target); 429 *s = prev; 430 431 if (ops->target.raw == NULL) 432 goto out_free_source; 433 434 if (comment == NULL) 435 return 0; 436 437 comment = ltrim(comment); 438 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name); 439 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 440 441 return 0; 442 443 out_free_source: 444 zfree(&ops->source.raw); 445 return -1; 446 } 447 448 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 449 struct ins_operands *ops) 450 { 451 return scnprintf(bf, size, "%-6s %s,%s", ins->name, 452 ops->source.name ?: ops->source.raw, 453 ops->target.name ?: ops->target.raw); 454 } 455 456 static struct ins_ops mov_ops = { 457 .parse = mov__parse, 458 .scnprintf = mov__scnprintf, 459 }; 460 461 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused) 462 { 463 char *target, *comment, *s, prev; 464 465 target = s = ops->raw; 466 467 while (s[0] != '\0' && !isspace(s[0])) 468 ++s; 469 prev = *s; 470 *s = '\0'; 471 472 ops->target.raw = strdup(target); 473 *s = prev; 474 475 if (ops->target.raw == NULL) 476 return -1; 477 478 comment = strchr(s, arch->objdump.comment_char); 479 if (comment == NULL) 480 return 0; 481 482 comment = ltrim(comment); 483 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 484 485 return 0; 486 } 487 488 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 489 struct ins_operands *ops) 490 { 491 return scnprintf(bf, size, "%-6s %s", ins->name, 492 ops->target.name ?: ops->target.raw); 493 } 494 495 static struct ins_ops dec_ops = { 496 .parse = dec__parse, 497 .scnprintf = dec__scnprintf, 498 }; 499 500 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 501 struct ins_operands *ops __maybe_unused) 502 { 503 return scnprintf(bf, size, "%-6s", "nop"); 504 } 505 506 static struct ins_ops nop_ops = { 507 .scnprintf = nop__scnprintf, 508 }; 509 510 static struct ins_ops ret_ops = { 511 .scnprintf = ins__raw_scnprintf, 512 }; 513 514 bool ins__is_ret(const struct ins *ins) 515 { 516 return ins->ops == &ret_ops; 517 } 518 519 bool ins__is_lock(const struct ins *ins) 520 { 521 return ins->ops == &lock_ops; 522 } 523 524 static int ins__key_cmp(const void *name, const void *insp) 525 { 526 const struct ins *ins = insp; 527 528 return strcmp(name, ins->name); 529 } 530 531 static int ins__cmp(const void *a, const void *b) 532 { 533 const struct ins *ia = a; 534 const struct ins *ib = b; 535 536 return strcmp(ia->name, ib->name); 537 } 538 539 static void ins__sort(struct arch *arch) 540 { 541 const int nmemb = arch->nr_instructions; 542 543 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp); 544 } 545 546 static struct ins_ops *__ins__find(struct arch *arch, const char *name) 547 { 548 struct ins *ins; 549 const int nmemb = arch->nr_instructions; 550 551 if (!arch->sorted_instructions) { 552 ins__sort(arch); 553 arch->sorted_instructions = true; 554 } 555 556 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp); 557 return ins ? ins->ops : NULL; 558 } 559 560 static struct ins_ops *ins__find(struct arch *arch, const char *name) 561 { 562 struct ins_ops *ops = __ins__find(arch, name); 563 564 if (!ops && arch->associate_instruction_ops) 565 ops = arch->associate_instruction_ops(arch, name); 566 567 return ops; 568 } 569 570 static int arch__key_cmp(const void *name, const void *archp) 571 { 572 const struct arch *arch = archp; 573 574 return strcmp(name, arch->name); 575 } 576 577 static int arch__cmp(const void *a, const void *b) 578 { 579 const struct arch *aa = a; 580 const struct arch *ab = b; 581 582 return strcmp(aa->name, ab->name); 583 } 584 585 static void arch__sort(void) 586 { 587 const int nmemb = ARRAY_SIZE(architectures); 588 589 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); 590 } 591 592 static struct arch *arch__find(const char *name) 593 { 594 const int nmemb = ARRAY_SIZE(architectures); 595 static bool sorted; 596 597 if (!sorted) { 598 arch__sort(); 599 sorted = true; 600 } 601 602 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); 603 } 604 605 int symbol__alloc_hist(struct symbol *sym) 606 { 607 struct annotation *notes = symbol__annotation(sym); 608 size_t size = symbol__size(sym); 609 size_t sizeof_sym_hist; 610 611 /* 612 * Add buffer of one element for zero length symbol. 613 * When sample is taken from first instruction of 614 * zero length symbol, perf still resolves it and 615 * shows symbol name in perf report and allows to 616 * annotate it. 617 */ 618 if (size == 0) 619 size = 1; 620 621 /* Check for overflow when calculating sizeof_sym_hist */ 622 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) 623 return -1; 624 625 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); 626 627 /* Check for overflow in zalloc argument */ 628 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src)) 629 / symbol_conf.nr_events) 630 return -1; 631 632 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist); 633 if (notes->src == NULL) 634 return -1; 635 notes->src->sizeof_sym_hist = sizeof_sym_hist; 636 notes->src->nr_histograms = symbol_conf.nr_events; 637 INIT_LIST_HEAD(¬es->src->source); 638 return 0; 639 } 640 641 /* The cycles histogram is lazily allocated. */ 642 static int symbol__alloc_hist_cycles(struct symbol *sym) 643 { 644 struct annotation *notes = symbol__annotation(sym); 645 const size_t size = symbol__size(sym); 646 647 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 648 if (notes->src->cycles_hist == NULL) 649 return -1; 650 return 0; 651 } 652 653 void symbol__annotate_zero_histograms(struct symbol *sym) 654 { 655 struct annotation *notes = symbol__annotation(sym); 656 657 pthread_mutex_lock(¬es->lock); 658 if (notes->src != NULL) { 659 memset(notes->src->histograms, 0, 660 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 661 if (notes->src->cycles_hist) 662 memset(notes->src->cycles_hist, 0, 663 symbol__size(sym) * sizeof(struct cyc_hist)); 664 } 665 pthread_mutex_unlock(¬es->lock); 666 } 667 668 static int __symbol__account_cycles(struct annotation *notes, 669 u64 start, 670 unsigned offset, unsigned cycles, 671 unsigned have_start) 672 { 673 struct cyc_hist *ch; 674 675 ch = notes->src->cycles_hist; 676 /* 677 * For now we can only account one basic block per 678 * final jump. But multiple could be overlapping. 679 * Always account the longest one. So when 680 * a shorter one has been already seen throw it away. 681 * 682 * We separately always account the full cycles. 683 */ 684 ch[offset].num_aggr++; 685 ch[offset].cycles_aggr += cycles; 686 687 if (!have_start && ch[offset].have_start) 688 return 0; 689 if (ch[offset].num) { 690 if (have_start && (!ch[offset].have_start || 691 ch[offset].start > start)) { 692 ch[offset].have_start = 0; 693 ch[offset].cycles = 0; 694 ch[offset].num = 0; 695 if (ch[offset].reset < 0xffff) 696 ch[offset].reset++; 697 } else if (have_start && 698 ch[offset].start < start) 699 return 0; 700 } 701 ch[offset].have_start = have_start; 702 ch[offset].start = start; 703 ch[offset].cycles += cycles; 704 ch[offset].num++; 705 return 0; 706 } 707 708 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map, 709 struct annotation *notes, int evidx, u64 addr, 710 struct perf_sample *sample) 711 { 712 unsigned offset; 713 struct sym_hist *h; 714 715 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 716 717 if ((addr < sym->start || addr >= sym->end) && 718 (addr != sym->end || sym->start != sym->end)) { 719 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 720 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 721 return -ERANGE; 722 } 723 724 offset = addr - sym->start; 725 h = annotation__histogram(notes, evidx); 726 h->nr_samples++; 727 h->addr[offset].nr_samples++; 728 h->period += sample->period; 729 h->addr[offset].period += sample->period; 730 731 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 732 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", 733 sym->start, sym->name, addr, addr - sym->start, evidx, 734 h->addr[offset].nr_samples, h->addr[offset].period); 735 return 0; 736 } 737 738 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles) 739 { 740 struct annotation *notes = symbol__annotation(sym); 741 742 if (notes->src == NULL) { 743 if (symbol__alloc_hist(sym) < 0) 744 return NULL; 745 } 746 if (!notes->src->cycles_hist && cycles) { 747 if (symbol__alloc_hist_cycles(sym) < 0) 748 return NULL; 749 } 750 return notes; 751 } 752 753 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map, 754 int evidx, u64 addr, 755 struct perf_sample *sample) 756 { 757 struct annotation *notes; 758 759 if (sym == NULL) 760 return 0; 761 notes = symbol__get_annotation(sym, false); 762 if (notes == NULL) 763 return -ENOMEM; 764 return __symbol__inc_addr_samples(sym, map, notes, evidx, addr, sample); 765 } 766 767 static int symbol__account_cycles(u64 addr, u64 start, 768 struct symbol *sym, unsigned cycles) 769 { 770 struct annotation *notes; 771 unsigned offset; 772 773 if (sym == NULL) 774 return 0; 775 notes = symbol__get_annotation(sym, true); 776 if (notes == NULL) 777 return -ENOMEM; 778 if (addr < sym->start || addr >= sym->end) 779 return -ERANGE; 780 781 if (start) { 782 if (start < sym->start || start >= sym->end) 783 return -ERANGE; 784 if (start >= addr) 785 start = 0; 786 } 787 offset = addr - sym->start; 788 return __symbol__account_cycles(notes, 789 start ? start - sym->start : 0, 790 offset, cycles, 791 !!start); 792 } 793 794 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 795 struct addr_map_symbol *start, 796 unsigned cycles) 797 { 798 u64 saddr = 0; 799 int err; 800 801 if (!cycles) 802 return 0; 803 804 /* 805 * Only set start when IPC can be computed. We can only 806 * compute it when the basic block is completely in a single 807 * function. 808 * Special case the case when the jump is elsewhere, but 809 * it starts on the function start. 810 */ 811 if (start && 812 (start->sym == ams->sym || 813 (ams->sym && 814 start->addr == ams->sym->start + ams->map->start))) 815 saddr = start->al_addr; 816 if (saddr == 0) 817 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 818 ams->addr, 819 start ? start->addr : 0, 820 ams->sym ? ams->sym->start + ams->map->start : 0, 821 saddr); 822 err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles); 823 if (err) 824 pr_debug2("account_cycles failed %d\n", err); 825 return err; 826 } 827 828 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 829 int evidx) 830 { 831 return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr, sample); 832 } 833 834 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 835 int evidx, u64 ip) 836 { 837 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip, sample); 838 } 839 840 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map) 841 { 842 dl->ins.ops = ins__find(arch, dl->ins.name); 843 844 if (!dl->ins.ops) 845 return; 846 847 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0) 848 dl->ins.ops = NULL; 849 } 850 851 static int disasm_line__parse(char *line, const char **namep, char **rawp) 852 { 853 char tmp, *name = ltrim(line); 854 855 if (name[0] == '\0') 856 return -1; 857 858 *rawp = name + 1; 859 860 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 861 ++*rawp; 862 863 tmp = (*rawp)[0]; 864 (*rawp)[0] = '\0'; 865 *namep = strdup(name); 866 867 if (*namep == NULL) 868 goto out_free_name; 869 870 (*rawp)[0] = tmp; 871 *rawp = ltrim(*rawp); 872 873 return 0; 874 875 out_free_name: 876 free((void *)namep); 877 *namep = NULL; 878 return -1; 879 } 880 881 static struct disasm_line *disasm_line__new(s64 offset, char *line, 882 size_t privsize, int line_nr, 883 struct arch *arch, 884 struct map *map) 885 { 886 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); 887 888 if (dl != NULL) { 889 dl->offset = offset; 890 dl->line = strdup(line); 891 dl->line_nr = line_nr; 892 if (dl->line == NULL) 893 goto out_delete; 894 895 if (offset != -1) { 896 if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0) 897 goto out_free_line; 898 899 disasm_line__init_ins(dl, arch, map); 900 } 901 } 902 903 return dl; 904 905 out_free_line: 906 zfree(&dl->line); 907 out_delete: 908 free(dl); 909 return NULL; 910 } 911 912 void disasm_line__free(struct disasm_line *dl) 913 { 914 zfree(&dl->line); 915 if (dl->ins.ops && dl->ins.ops->free) 916 dl->ins.ops->free(&dl->ops); 917 else 918 ins__delete(&dl->ops); 919 free((void *)dl->ins.name); 920 dl->ins.name = NULL; 921 free(dl); 922 } 923 924 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw) 925 { 926 if (raw || !dl->ins.ops) 927 return scnprintf(bf, size, "%-6s %s", dl->ins.name, dl->ops.raw); 928 929 return ins__scnprintf(&dl->ins, bf, size, &dl->ops); 930 } 931 932 static void disasm__add(struct list_head *head, struct disasm_line *line) 933 { 934 list_add_tail(&line->node, head); 935 } 936 937 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos) 938 { 939 list_for_each_entry_continue(pos, head, node) 940 if (pos->offset >= 0) 941 return pos; 942 943 return NULL; 944 } 945 946 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, 947 s64 end, const char **path, struct sym_hist_entry *sample) 948 { 949 struct source_line *src_line = notes->src->lines; 950 double percent = 0.0; 951 952 sample->nr_samples = sample->period = 0; 953 954 if (src_line) { 955 size_t sizeof_src_line = sizeof(*src_line) + 956 sizeof(src_line->samples) * (src_line->nr_pcnt - 1); 957 958 while (offset < end) { 959 src_line = (void *)notes->src->lines + 960 (sizeof_src_line * offset); 961 962 if (*path == NULL) 963 *path = src_line->path; 964 965 percent += src_line->samples[evidx].percent; 966 sample->nr_samples += src_line->samples[evidx].nr; 967 offset++; 968 } 969 } else { 970 struct sym_hist *h = annotation__histogram(notes, evidx); 971 unsigned int hits = 0; 972 u64 period = 0; 973 974 while (offset < end) { 975 hits += h->addr[offset].nr_samples; 976 period += h->addr[offset].period; 977 ++offset; 978 } 979 980 if (h->nr_samples) { 981 sample->period = period; 982 sample->nr_samples = hits; 983 percent = 100.0 * hits / h->nr_samples; 984 } 985 } 986 987 return percent; 988 } 989 990 static const char *annotate__address_color(struct block_range *br) 991 { 992 double cov = block_range__coverage(br); 993 994 if (cov >= 0) { 995 /* mark red for >75% coverage */ 996 if (cov > 0.75) 997 return PERF_COLOR_RED; 998 999 /* mark dull for <1% coverage */ 1000 if (cov < 0.01) 1001 return PERF_COLOR_NORMAL; 1002 } 1003 1004 return PERF_COLOR_MAGENTA; 1005 } 1006 1007 static const char *annotate__asm_color(struct block_range *br) 1008 { 1009 double cov = block_range__coverage(br); 1010 1011 if (cov >= 0) { 1012 /* mark dull for <1% coverage */ 1013 if (cov < 0.01) 1014 return PERF_COLOR_NORMAL; 1015 } 1016 1017 return PERF_COLOR_BLUE; 1018 } 1019 1020 static void annotate__branch_printf(struct block_range *br, u64 addr) 1021 { 1022 bool emit_comment = true; 1023 1024 if (!br) 1025 return; 1026 1027 #if 1 1028 if (br->is_target && br->start == addr) { 1029 struct block_range *branch = br; 1030 double p; 1031 1032 /* 1033 * Find matching branch to our target. 1034 */ 1035 while (!branch->is_branch) 1036 branch = block_range__next(branch); 1037 1038 p = 100 *(double)br->entry / branch->coverage; 1039 1040 if (p > 0.1) { 1041 if (emit_comment) { 1042 emit_comment = false; 1043 printf("\t#"); 1044 } 1045 1046 /* 1047 * The percentage of coverage joined at this target in relation 1048 * to the next branch. 1049 */ 1050 printf(" +%.2f%%", p); 1051 } 1052 } 1053 #endif 1054 if (br->is_branch && br->end == addr) { 1055 double p = 100*(double)br->taken / br->coverage; 1056 1057 if (p > 0.1) { 1058 if (emit_comment) { 1059 emit_comment = false; 1060 printf("\t#"); 1061 } 1062 1063 /* 1064 * The percentage of coverage leaving at this branch, and 1065 * its prediction ratio. 1066 */ 1067 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 1068 } 1069 } 1070 } 1071 1072 1073 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start, 1074 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed, 1075 int max_lines, struct disasm_line *queue) 1076 { 1077 static const char *prev_line; 1078 static const char *prev_color; 1079 1080 if (dl->offset != -1) { 1081 const char *path = NULL; 1082 double percent, max_percent = 0.0; 1083 double *ppercents = &percent; 1084 struct sym_hist_entry sample; 1085 struct sym_hist_entry *psamples = &sample; 1086 int i, nr_percent = 1; 1087 const char *color; 1088 struct annotation *notes = symbol__annotation(sym); 1089 s64 offset = dl->offset; 1090 const u64 addr = start + offset; 1091 struct disasm_line *next; 1092 struct block_range *br; 1093 1094 next = disasm__get_next_ip_line(¬es->src->source, dl); 1095 1096 if (perf_evsel__is_group_event(evsel)) { 1097 nr_percent = evsel->nr_members; 1098 ppercents = calloc(nr_percent, sizeof(double)); 1099 psamples = calloc(nr_percent, sizeof(struct sym_hist_entry)); 1100 if (ppercents == NULL || psamples == NULL) { 1101 return -1; 1102 } 1103 } 1104 1105 for (i = 0; i < nr_percent; i++) { 1106 percent = disasm__calc_percent(notes, 1107 notes->src->lines ? i : evsel->idx + i, 1108 offset, 1109 next ? next->offset : (s64) len, 1110 &path, &sample); 1111 1112 ppercents[i] = percent; 1113 psamples[i] = sample; 1114 if (percent > max_percent) 1115 max_percent = percent; 1116 } 1117 1118 if (max_percent < min_pcnt) 1119 return -1; 1120 1121 if (max_lines && printed >= max_lines) 1122 return 1; 1123 1124 if (queue != NULL) { 1125 list_for_each_entry_from(queue, ¬es->src->source, node) { 1126 if (queue == dl) 1127 break; 1128 disasm_line__print(queue, sym, start, evsel, len, 1129 0, 0, 1, NULL); 1130 } 1131 } 1132 1133 color = get_percent_color(max_percent); 1134 1135 /* 1136 * Also color the filename and line if needed, with 1137 * the same color than the percentage. Don't print it 1138 * twice for close colored addr with the same filename:line 1139 */ 1140 if (path) { 1141 if (!prev_line || strcmp(prev_line, path) 1142 || color != prev_color) { 1143 color_fprintf(stdout, color, " %s", path); 1144 prev_line = path; 1145 prev_color = color; 1146 } 1147 } 1148 1149 for (i = 0; i < nr_percent; i++) { 1150 percent = ppercents[i]; 1151 sample = psamples[i]; 1152 color = get_percent_color(percent); 1153 1154 if (symbol_conf.show_total_period) 1155 color_fprintf(stdout, color, " %11" PRIu64, 1156 sample.period); 1157 else if (symbol_conf.show_nr_samples) 1158 color_fprintf(stdout, color, " %7" PRIu64, 1159 sample.nr_samples); 1160 else 1161 color_fprintf(stdout, color, " %7.2f", percent); 1162 } 1163 1164 printf(" : "); 1165 1166 br = block_range__find(addr); 1167 color_fprintf(stdout, annotate__address_color(br), " %" PRIx64 ":", addr); 1168 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line); 1169 annotate__branch_printf(br, addr); 1170 printf("\n"); 1171 1172 if (ppercents != &percent) 1173 free(ppercents); 1174 1175 if (psamples != &sample) 1176 free(psamples); 1177 1178 } else if (max_lines && printed >= max_lines) 1179 return 1; 1180 else { 1181 int width = symbol_conf.show_total_period ? 12 : 8; 1182 1183 if (queue) 1184 return -1; 1185 1186 if (perf_evsel__is_group_event(evsel)) 1187 width *= evsel->nr_members; 1188 1189 if (!*dl->line) 1190 printf(" %*s:\n", width, " "); 1191 else 1192 printf(" %*s: %s\n", width, " ", dl->line); 1193 } 1194 1195 return 0; 1196 } 1197 1198 /* 1199 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1200 * which looks like following 1201 * 1202 * 0000000000415500 <_init>: 1203 * 415500: sub $0x8,%rsp 1204 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1205 * 41550b: test %rax,%rax 1206 * 41550e: je 415515 <_init+0x15> 1207 * 415510: callq 416e70 <__gmon_start__@plt> 1208 * 415515: add $0x8,%rsp 1209 * 415519: retq 1210 * 1211 * it will be parsed and saved into struct disasm_line as 1212 * <offset> <name> <ops.raw> 1213 * 1214 * The offset will be a relative offset from the start of the symbol and -1 1215 * means that it's not a disassembly line so should be treated differently. 1216 * The ops.raw part will be parsed further according to type of the instruction. 1217 */ 1218 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, 1219 struct arch *arch, 1220 FILE *file, size_t privsize, 1221 int *line_nr) 1222 { 1223 struct annotation *notes = symbol__annotation(sym); 1224 struct disasm_line *dl; 1225 char *line = NULL, *parsed_line, *tmp, *tmp2; 1226 size_t line_len; 1227 s64 line_ip, offset = -1; 1228 regmatch_t match[2]; 1229 1230 if (getline(&line, &line_len, file) < 0) 1231 return -1; 1232 1233 if (!line) 1234 return -1; 1235 1236 line_ip = -1; 1237 parsed_line = rtrim(line); 1238 1239 /* /filename:linenr ? Save line number and ignore. */ 1240 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { 1241 *line_nr = atoi(parsed_line + match[1].rm_so); 1242 return 0; 1243 } 1244 1245 tmp = ltrim(parsed_line); 1246 if (*tmp) { 1247 /* 1248 * Parse hexa addresses followed by ':' 1249 */ 1250 line_ip = strtoull(tmp, &tmp2, 16); 1251 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0') 1252 line_ip = -1; 1253 } 1254 1255 if (line_ip != -1) { 1256 u64 start = map__rip_2objdump(map, sym->start), 1257 end = map__rip_2objdump(map, sym->end); 1258 1259 offset = line_ip - start; 1260 if ((u64)line_ip < start || (u64)line_ip >= end) 1261 offset = -1; 1262 else 1263 parsed_line = tmp2 + 1; 1264 } 1265 1266 dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map); 1267 free(line); 1268 (*line_nr)++; 1269 1270 if (dl == NULL) 1271 return -1; 1272 1273 if (!disasm_line__has_offset(dl)) { 1274 dl->ops.target.offset = dl->ops.target.addr - 1275 map__rip_2objdump(map, sym->start); 1276 dl->ops.target.offset_avail = true; 1277 } 1278 1279 /* kcore has no symbols, so add the call target name */ 1280 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.name) { 1281 struct addr_map_symbol target = { 1282 .map = map, 1283 .addr = dl->ops.target.addr, 1284 }; 1285 1286 if (!map_groups__find_ams(&target) && 1287 target.sym->start == target.al_addr) 1288 dl->ops.target.name = strdup(target.sym->name); 1289 } 1290 1291 disasm__add(¬es->src->source, dl); 1292 1293 return 0; 1294 } 1295 1296 static __attribute__((constructor)) void symbol__init_regexpr(void) 1297 { 1298 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1299 } 1300 1301 static void delete_last_nop(struct symbol *sym) 1302 { 1303 struct annotation *notes = symbol__annotation(sym); 1304 struct list_head *list = ¬es->src->source; 1305 struct disasm_line *dl; 1306 1307 while (!list_empty(list)) { 1308 dl = list_entry(list->prev, struct disasm_line, node); 1309 1310 if (dl->ins.ops) { 1311 if (dl->ins.ops != &nop_ops) 1312 return; 1313 } else { 1314 if (!strstr(dl->line, " nop ") && 1315 !strstr(dl->line, " nopl ") && 1316 !strstr(dl->line, " nopw ")) 1317 return; 1318 } 1319 1320 list_del(&dl->node); 1321 disasm_line__free(dl); 1322 } 1323 } 1324 1325 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map, 1326 int errnum, char *buf, size_t buflen) 1327 { 1328 struct dso *dso = map->dso; 1329 1330 BUG_ON(buflen == 0); 1331 1332 if (errnum >= 0) { 1333 str_error_r(errnum, buf, buflen); 1334 return 0; 1335 } 1336 1337 switch (errnum) { 1338 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1339 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1340 char *build_id_msg = NULL; 1341 1342 if (dso->has_build_id) { 1343 build_id__sprintf(dso->build_id, 1344 sizeof(dso->build_id), bf + 15); 1345 build_id_msg = bf; 1346 } 1347 scnprintf(buf, buflen, 1348 "No vmlinux file%s\nwas found in the path.\n\n" 1349 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1350 "Please use:\n\n" 1351 " perf buildid-cache -vu vmlinux\n\n" 1352 "or:\n\n" 1353 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1354 } 1355 break; 1356 default: 1357 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1358 break; 1359 } 1360 1361 return 0; 1362 } 1363 1364 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1365 { 1366 char linkname[PATH_MAX]; 1367 char *build_id_filename; 1368 char *build_id_path = NULL; 1369 char *pos; 1370 1371 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1372 !dso__is_kcore(dso)) 1373 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1374 1375 build_id_filename = dso__build_id_filename(dso, NULL, 0, false); 1376 if (build_id_filename) { 1377 __symbol__join_symfs(filename, filename_size, build_id_filename); 1378 free(build_id_filename); 1379 } else { 1380 if (dso->has_build_id) 1381 return ENOMEM; 1382 goto fallback; 1383 } 1384 1385 build_id_path = strdup(filename); 1386 if (!build_id_path) 1387 return -1; 1388 1389 /* 1390 * old style build-id cache has name of XX/XXXXXXX.. while 1391 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}. 1392 * extract the build-id part of dirname in the new style only. 1393 */ 1394 pos = strrchr(build_id_path, '/'); 1395 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2) 1396 dirname(build_id_path); 1397 1398 if (dso__is_kcore(dso) || 1399 readlink(build_id_path, linkname, sizeof(linkname)) < 0 || 1400 strstr(linkname, DSO__NAME_KALLSYMS) || 1401 access(filename, R_OK)) { 1402 fallback: 1403 /* 1404 * If we don't have build-ids or the build-id file isn't in the 1405 * cache, or is just a kallsyms file, well, lets hope that this 1406 * DSO is the same as when 'perf record' ran. 1407 */ 1408 __symbol__join_symfs(filename, filename_size, dso->long_name); 1409 } 1410 1411 free(build_id_path); 1412 return 0; 1413 } 1414 1415 static const char *annotate__norm_arch(const char *arch_name) 1416 { 1417 struct utsname uts; 1418 1419 if (!arch_name) { /* Assume we are annotating locally. */ 1420 if (uname(&uts) < 0) 1421 return NULL; 1422 arch_name = uts.machine; 1423 } 1424 return normalize_arch((char *)arch_name); 1425 } 1426 1427 int symbol__disassemble(struct symbol *sym, struct map *map, 1428 const char *arch_name, size_t privsize, 1429 struct arch **parch, char *cpuid) 1430 { 1431 struct dso *dso = map->dso; 1432 char command[PATH_MAX * 2]; 1433 struct arch *arch = NULL; 1434 FILE *file; 1435 char symfs_filename[PATH_MAX]; 1436 struct kcore_extract kce; 1437 bool delete_extract = false; 1438 int stdout_fd[2]; 1439 int lineno = 0; 1440 int nline; 1441 pid_t pid; 1442 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1443 1444 if (err) 1445 return err; 1446 1447 arch_name = annotate__norm_arch(arch_name); 1448 if (!arch_name) 1449 return -1; 1450 1451 arch = arch__find(arch_name); 1452 if (arch == NULL) 1453 return -ENOTSUP; 1454 1455 if (parch) 1456 *parch = arch; 1457 1458 if (arch->init) { 1459 err = arch->init(arch, cpuid); 1460 if (err) { 1461 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); 1462 return err; 1463 } 1464 } 1465 1466 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1467 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1468 map->unmap_ip(map, sym->end)); 1469 1470 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1471 dso, dso->long_name, sym, sym->name); 1472 1473 if (dso__is_kcore(dso)) { 1474 kce.kcore_filename = symfs_filename; 1475 kce.addr = map__rip_2objdump(map, sym->start); 1476 kce.offs = sym->start; 1477 kce.len = sym->end - sym->start; 1478 if (!kcore_extract__create(&kce)) { 1479 delete_extract = true; 1480 strlcpy(symfs_filename, kce.extract_filename, 1481 sizeof(symfs_filename)); 1482 } 1483 } else if (dso__needs_decompress(dso)) { 1484 char tmp[KMOD_DECOMP_LEN]; 1485 1486 if (dso__decompress_kmodule_path(dso, symfs_filename, 1487 tmp, sizeof(tmp)) < 0) 1488 goto out; 1489 1490 strcpy(symfs_filename, tmp); 1491 } 1492 1493 snprintf(command, sizeof(command), 1494 "%s %s%s --start-address=0x%016" PRIx64 1495 " --stop-address=0x%016" PRIx64 1496 " -l -d %s %s -C \"%s\" 2>/dev/null|grep -v \"%s:\"|expand", 1497 objdump_path ? objdump_path : "objdump", 1498 disassembler_style ? "-M " : "", 1499 disassembler_style ? disassembler_style : "", 1500 map__rip_2objdump(map, sym->start), 1501 map__rip_2objdump(map, sym->end), 1502 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw", 1503 symbol_conf.annotate_src ? "-S" : "", 1504 symfs_filename, symfs_filename); 1505 1506 pr_debug("Executing: %s\n", command); 1507 1508 err = -1; 1509 if (pipe(stdout_fd) < 0) { 1510 pr_err("Failure creating the pipe to run %s\n", command); 1511 goto out_remove_tmp; 1512 } 1513 1514 pid = fork(); 1515 if (pid < 0) { 1516 pr_err("Failure forking to run %s\n", command); 1517 goto out_close_stdout; 1518 } 1519 1520 if (pid == 0) { 1521 close(stdout_fd[0]); 1522 dup2(stdout_fd[1], 1); 1523 close(stdout_fd[1]); 1524 execl("/bin/sh", "sh", "-c", command, NULL); 1525 perror(command); 1526 exit(-1); 1527 } 1528 1529 close(stdout_fd[1]); 1530 1531 file = fdopen(stdout_fd[0], "r"); 1532 if (!file) { 1533 pr_err("Failure creating FILE stream for %s\n", command); 1534 /* 1535 * If we were using debug info should retry with 1536 * original binary. 1537 */ 1538 goto out_remove_tmp; 1539 } 1540 1541 nline = 0; 1542 while (!feof(file)) { 1543 /* 1544 * The source code line number (lineno) needs to be kept in 1545 * accross calls to symbol__parse_objdump_line(), so that it 1546 * can associate it with the instructions till the next one. 1547 * See disasm_line__new() and struct disasm_line::line_nr. 1548 */ 1549 if (symbol__parse_objdump_line(sym, map, arch, file, privsize, 1550 &lineno) < 0) 1551 break; 1552 nline++; 1553 } 1554 1555 if (nline == 0) 1556 pr_err("No output from %s\n", command); 1557 1558 /* 1559 * kallsyms does not have symbol sizes so there may a nop at the end. 1560 * Remove it. 1561 */ 1562 if (dso__is_kcore(dso)) 1563 delete_last_nop(sym); 1564 1565 fclose(file); 1566 err = 0; 1567 out_remove_tmp: 1568 close(stdout_fd[0]); 1569 1570 if (dso__needs_decompress(dso)) 1571 unlink(symfs_filename); 1572 1573 if (delete_extract) 1574 kcore_extract__delete(&kce); 1575 out: 1576 return err; 1577 1578 out_close_stdout: 1579 close(stdout_fd[1]); 1580 goto out_remove_tmp; 1581 } 1582 1583 static void insert_source_line(struct rb_root *root, struct source_line *src_line) 1584 { 1585 struct source_line *iter; 1586 struct rb_node **p = &root->rb_node; 1587 struct rb_node *parent = NULL; 1588 int i, ret; 1589 1590 while (*p != NULL) { 1591 parent = *p; 1592 iter = rb_entry(parent, struct source_line, node); 1593 1594 ret = strcmp(iter->path, src_line->path); 1595 if (ret == 0) { 1596 for (i = 0; i < src_line->nr_pcnt; i++) 1597 iter->samples[i].percent_sum += src_line->samples[i].percent; 1598 return; 1599 } 1600 1601 if (ret < 0) 1602 p = &(*p)->rb_left; 1603 else 1604 p = &(*p)->rb_right; 1605 } 1606 1607 for (i = 0; i < src_line->nr_pcnt; i++) 1608 src_line->samples[i].percent_sum = src_line->samples[i].percent; 1609 1610 rb_link_node(&src_line->node, parent, p); 1611 rb_insert_color(&src_line->node, root); 1612 } 1613 1614 static int cmp_source_line(struct source_line *a, struct source_line *b) 1615 { 1616 int i; 1617 1618 for (i = 0; i < a->nr_pcnt; i++) { 1619 if (a->samples[i].percent_sum == b->samples[i].percent_sum) 1620 continue; 1621 return a->samples[i].percent_sum > b->samples[i].percent_sum; 1622 } 1623 1624 return 0; 1625 } 1626 1627 static void __resort_source_line(struct rb_root *root, struct source_line *src_line) 1628 { 1629 struct source_line *iter; 1630 struct rb_node **p = &root->rb_node; 1631 struct rb_node *parent = NULL; 1632 1633 while (*p != NULL) { 1634 parent = *p; 1635 iter = rb_entry(parent, struct source_line, node); 1636 1637 if (cmp_source_line(src_line, iter)) 1638 p = &(*p)->rb_left; 1639 else 1640 p = &(*p)->rb_right; 1641 } 1642 1643 rb_link_node(&src_line->node, parent, p); 1644 rb_insert_color(&src_line->node, root); 1645 } 1646 1647 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 1648 { 1649 struct source_line *src_line; 1650 struct rb_node *node; 1651 1652 node = rb_first(src_root); 1653 while (node) { 1654 struct rb_node *next; 1655 1656 src_line = rb_entry(node, struct source_line, node); 1657 next = rb_next(node); 1658 rb_erase(node, src_root); 1659 1660 __resort_source_line(dest_root, src_line); 1661 node = next; 1662 } 1663 } 1664 1665 static void symbol__free_source_line(struct symbol *sym, int len) 1666 { 1667 struct annotation *notes = symbol__annotation(sym); 1668 struct source_line *src_line = notes->src->lines; 1669 size_t sizeof_src_line; 1670 int i; 1671 1672 sizeof_src_line = sizeof(*src_line) + 1673 (sizeof(src_line->samples) * (src_line->nr_pcnt - 1)); 1674 1675 for (i = 0; i < len; i++) { 1676 free_srcline(src_line->path); 1677 src_line = (void *)src_line + sizeof_src_line; 1678 } 1679 1680 zfree(¬es->src->lines); 1681 } 1682 1683 /* Get the filename:line for the colored entries */ 1684 static int symbol__get_source_line(struct symbol *sym, struct map *map, 1685 struct perf_evsel *evsel, 1686 struct rb_root *root, int len) 1687 { 1688 u64 start; 1689 int i, k; 1690 int evidx = evsel->idx; 1691 struct source_line *src_line; 1692 struct annotation *notes = symbol__annotation(sym); 1693 struct sym_hist *h = annotation__histogram(notes, evidx); 1694 struct rb_root tmp_root = RB_ROOT; 1695 int nr_pcnt = 1; 1696 u64 nr_samples = h->nr_samples; 1697 size_t sizeof_src_line = sizeof(struct source_line); 1698 1699 if (perf_evsel__is_group_event(evsel)) { 1700 for (i = 1; i < evsel->nr_members; i++) { 1701 h = annotation__histogram(notes, evidx + i); 1702 nr_samples += h->nr_samples; 1703 } 1704 nr_pcnt = evsel->nr_members; 1705 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples); 1706 } 1707 1708 if (!nr_samples) 1709 return 0; 1710 1711 src_line = notes->src->lines = calloc(len, sizeof_src_line); 1712 if (!notes->src->lines) 1713 return -1; 1714 1715 start = map__rip_2objdump(map, sym->start); 1716 1717 for (i = 0; i < len; i++) { 1718 u64 offset; 1719 double percent_max = 0.0; 1720 1721 src_line->nr_pcnt = nr_pcnt; 1722 1723 for (k = 0; k < nr_pcnt; k++) { 1724 double percent = 0.0; 1725 1726 h = annotation__histogram(notes, evidx + k); 1727 nr_samples = h->addr[i].nr_samples; 1728 if (h->nr_samples) 1729 percent = 100.0 * nr_samples / h->nr_samples; 1730 1731 if (percent > percent_max) 1732 percent_max = percent; 1733 src_line->samples[k].percent = percent; 1734 src_line->samples[k].nr = nr_samples; 1735 } 1736 1737 if (percent_max <= 0.5) 1738 goto next; 1739 1740 offset = start + i; 1741 src_line->path = get_srcline(map->dso, offset, NULL, 1742 false, true); 1743 insert_source_line(&tmp_root, src_line); 1744 1745 next: 1746 src_line = (void *)src_line + sizeof_src_line; 1747 } 1748 1749 resort_source_line(root, &tmp_root); 1750 return 0; 1751 } 1752 1753 static void print_summary(struct rb_root *root, const char *filename) 1754 { 1755 struct source_line *src_line; 1756 struct rb_node *node; 1757 1758 printf("\nSorted summary for file %s\n", filename); 1759 printf("----------------------------------------------\n\n"); 1760 1761 if (RB_EMPTY_ROOT(root)) { 1762 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 1763 return; 1764 } 1765 1766 node = rb_first(root); 1767 while (node) { 1768 double percent, percent_max = 0.0; 1769 const char *color; 1770 char *path; 1771 int i; 1772 1773 src_line = rb_entry(node, struct source_line, node); 1774 for (i = 0; i < src_line->nr_pcnt; i++) { 1775 percent = src_line->samples[i].percent_sum; 1776 color = get_percent_color(percent); 1777 color_fprintf(stdout, color, " %7.2f", percent); 1778 1779 if (percent > percent_max) 1780 percent_max = percent; 1781 } 1782 1783 path = src_line->path; 1784 color = get_percent_color(percent_max); 1785 color_fprintf(stdout, color, " %s\n", path); 1786 1787 node = rb_next(node); 1788 } 1789 } 1790 1791 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) 1792 { 1793 struct annotation *notes = symbol__annotation(sym); 1794 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 1795 u64 len = symbol__size(sym), offset; 1796 1797 for (offset = 0; offset < len; ++offset) 1798 if (h->addr[offset].nr_samples != 0) 1799 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 1800 sym->start + offset, h->addr[offset].nr_samples); 1801 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); 1802 } 1803 1804 int symbol__annotate_printf(struct symbol *sym, struct map *map, 1805 struct perf_evsel *evsel, bool full_paths, 1806 int min_pcnt, int max_lines, int context) 1807 { 1808 struct dso *dso = map->dso; 1809 char *filename; 1810 const char *d_filename; 1811 const char *evsel_name = perf_evsel__name(evsel); 1812 struct annotation *notes = symbol__annotation(sym); 1813 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 1814 struct disasm_line *pos, *queue = NULL; 1815 u64 start = map__rip_2objdump(map, sym->start); 1816 int printed = 2, queue_len = 0; 1817 int more = 0; 1818 u64 len; 1819 int width = symbol_conf.show_total_period ? 12 : 8; 1820 int graph_dotted_len; 1821 1822 filename = strdup(dso->long_name); 1823 if (!filename) 1824 return -ENOMEM; 1825 1826 if (full_paths) 1827 d_filename = filename; 1828 else 1829 d_filename = basename(filename); 1830 1831 len = symbol__size(sym); 1832 1833 if (perf_evsel__is_group_event(evsel)) 1834 width *= evsel->nr_members; 1835 1836 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n", 1837 width, width, symbol_conf.show_total_period ? "Period" : 1838 symbol_conf.show_nr_samples ? "Samples" : "Percent", 1839 d_filename, evsel_name, h->nr_samples); 1840 1841 printf("%-*.*s----\n", 1842 graph_dotted_len, graph_dotted_len, graph_dotted_line); 1843 1844 if (verbose > 0) 1845 symbol__annotate_hits(sym, evsel); 1846 1847 list_for_each_entry(pos, ¬es->src->source, node) { 1848 if (context && queue == NULL) { 1849 queue = pos; 1850 queue_len = 0; 1851 } 1852 1853 switch (disasm_line__print(pos, sym, start, evsel, len, 1854 min_pcnt, printed, max_lines, 1855 queue)) { 1856 case 0: 1857 ++printed; 1858 if (context) { 1859 printed += queue_len; 1860 queue = NULL; 1861 queue_len = 0; 1862 } 1863 break; 1864 case 1: 1865 /* filtered by max_lines */ 1866 ++more; 1867 break; 1868 case -1: 1869 default: 1870 /* 1871 * Filtered by min_pcnt or non IP lines when 1872 * context != 0 1873 */ 1874 if (!context) 1875 break; 1876 if (queue_len == context) 1877 queue = list_entry(queue->node.next, typeof(*queue), node); 1878 else 1879 ++queue_len; 1880 break; 1881 } 1882 } 1883 1884 free(filename); 1885 1886 return more; 1887 } 1888 1889 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 1890 { 1891 struct annotation *notes = symbol__annotation(sym); 1892 struct sym_hist *h = annotation__histogram(notes, evidx); 1893 1894 memset(h, 0, notes->src->sizeof_sym_hist); 1895 } 1896 1897 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 1898 { 1899 struct annotation *notes = symbol__annotation(sym); 1900 struct sym_hist *h = annotation__histogram(notes, evidx); 1901 int len = symbol__size(sym), offset; 1902 1903 h->nr_samples = 0; 1904 for (offset = 0; offset < len; ++offset) { 1905 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; 1906 h->nr_samples += h->addr[offset].nr_samples; 1907 } 1908 } 1909 1910 void disasm__purge(struct list_head *head) 1911 { 1912 struct disasm_line *pos, *n; 1913 1914 list_for_each_entry_safe(pos, n, head, node) { 1915 list_del(&pos->node); 1916 disasm_line__free(pos); 1917 } 1918 } 1919 1920 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 1921 { 1922 size_t printed; 1923 1924 if (dl->offset == -1) 1925 return fprintf(fp, "%s\n", dl->line); 1926 1927 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->ins.name); 1928 1929 if (dl->ops.raw[0] != '\0') { 1930 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 1931 dl->ops.raw); 1932 } 1933 1934 return printed + fprintf(fp, "\n"); 1935 } 1936 1937 size_t disasm__fprintf(struct list_head *head, FILE *fp) 1938 { 1939 struct disasm_line *pos; 1940 size_t printed = 0; 1941 1942 list_for_each_entry(pos, head, node) 1943 printed += disasm_line__fprintf(pos, fp); 1944 1945 return printed; 1946 } 1947 1948 int symbol__tty_annotate(struct symbol *sym, struct map *map, 1949 struct perf_evsel *evsel, bool print_lines, 1950 bool full_paths, int min_pcnt, int max_lines) 1951 { 1952 struct dso *dso = map->dso; 1953 struct rb_root source_line = RB_ROOT; 1954 u64 len; 1955 1956 if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 1957 0, NULL, NULL) < 0) 1958 return -1; 1959 1960 len = symbol__size(sym); 1961 1962 if (print_lines) { 1963 srcline_full_filename = full_paths; 1964 symbol__get_source_line(sym, map, evsel, &source_line, len); 1965 print_summary(&source_line, dso->long_name); 1966 } 1967 1968 symbol__annotate_printf(sym, map, evsel, full_paths, 1969 min_pcnt, max_lines, 0); 1970 if (print_lines) 1971 symbol__free_source_line(sym, len); 1972 1973 disasm__purge(&symbol__annotation(sym)->src->source); 1974 1975 return 0; 1976 } 1977 1978 bool ui__has_annotation(void) 1979 { 1980 return use_browser == 1 && perf_hpp_list.sym; 1981 } 1982