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 "block-range.h" 21 #include <regex.h> 22 #include <pthread.h> 23 #include <linux/bitops.h> 24 25 const char *disassembler_style; 26 const char *objdump_path; 27 static regex_t file_lineno; 28 29 static struct ins *ins__find(const char *name); 30 static int disasm_line__parse(char *line, char **namep, char **rawp); 31 32 static void ins__delete(struct ins_operands *ops) 33 { 34 if (ops == NULL) 35 return; 36 zfree(&ops->source.raw); 37 zfree(&ops->source.name); 38 zfree(&ops->target.raw); 39 zfree(&ops->target.name); 40 } 41 42 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 43 struct ins_operands *ops) 44 { 45 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw); 46 } 47 48 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 49 struct ins_operands *ops) 50 { 51 if (ins->ops->scnprintf) 52 return ins->ops->scnprintf(ins, bf, size, ops); 53 54 return ins__raw_scnprintf(ins, bf, size, ops); 55 } 56 57 static int call__parse(struct ins_operands *ops, struct map *map) 58 { 59 char *endptr, *tok, *name; 60 61 ops->target.addr = strtoull(ops->raw, &endptr, 16); 62 63 name = strchr(endptr, '<'); 64 if (name == NULL) 65 goto indirect_call; 66 67 name++; 68 69 #ifdef __arm__ 70 if (strchr(name, '+')) 71 return -1; 72 #endif 73 74 tok = strchr(name, '>'); 75 if (tok == NULL) 76 return -1; 77 78 *tok = '\0'; 79 ops->target.name = strdup(name); 80 *tok = '>'; 81 82 return ops->target.name == NULL ? -1 : 0; 83 84 indirect_call: 85 tok = strchr(endptr, '*'); 86 if (tok == NULL) { 87 struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr)); 88 if (sym != NULL) 89 ops->target.name = strdup(sym->name); 90 else 91 ops->target.addr = 0; 92 return 0; 93 } 94 95 ops->target.addr = strtoull(tok + 1, NULL, 16); 96 return 0; 97 } 98 99 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 100 struct ins_operands *ops) 101 { 102 if (ops->target.name) 103 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name); 104 105 if (ops->target.addr == 0) 106 return ins__raw_scnprintf(ins, bf, size, ops); 107 108 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr); 109 } 110 111 static struct ins_ops call_ops = { 112 .parse = call__parse, 113 .scnprintf = call__scnprintf, 114 }; 115 116 bool ins__is_call(const struct ins *ins) 117 { 118 return ins->ops == &call_ops; 119 } 120 121 static int jump__parse(struct ins_operands *ops, struct map *map __maybe_unused) 122 { 123 const char *s = strchr(ops->raw, '+'); 124 125 ops->target.addr = strtoull(ops->raw, NULL, 16); 126 127 if (s++ != NULL) 128 ops->target.offset = strtoull(s, NULL, 16); 129 else 130 ops->target.offset = UINT64_MAX; 131 132 return 0; 133 } 134 135 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 136 struct ins_operands *ops) 137 { 138 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset); 139 } 140 141 static struct ins_ops jump_ops = { 142 .parse = jump__parse, 143 .scnprintf = jump__scnprintf, 144 }; 145 146 bool ins__is_jump(const struct ins *ins) 147 { 148 return ins->ops == &jump_ops; 149 } 150 151 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 152 { 153 char *endptr, *name, *t; 154 155 if (strstr(raw, "(%rip)") == NULL) 156 return 0; 157 158 *addrp = strtoull(comment, &endptr, 16); 159 name = strchr(endptr, '<'); 160 if (name == NULL) 161 return -1; 162 163 name++; 164 165 t = strchr(name, '>'); 166 if (t == NULL) 167 return 0; 168 169 *t = '\0'; 170 *namep = strdup(name); 171 *t = '>'; 172 173 return 0; 174 } 175 176 static int lock__parse(struct ins_operands *ops, struct map *map) 177 { 178 char *name; 179 180 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 181 if (ops->locked.ops == NULL) 182 return 0; 183 184 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0) 185 goto out_free_ops; 186 187 ops->locked.ins = ins__find(name); 188 free(name); 189 190 if (ops->locked.ins == NULL) 191 goto out_free_ops; 192 193 if (!ops->locked.ins->ops) 194 return 0; 195 196 if (ops->locked.ins->ops->parse && 197 ops->locked.ins->ops->parse(ops->locked.ops, map) < 0) 198 goto out_free_ops; 199 200 return 0; 201 202 out_free_ops: 203 zfree(&ops->locked.ops); 204 return 0; 205 } 206 207 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 208 struct ins_operands *ops) 209 { 210 int printed; 211 212 if (ops->locked.ins == NULL) 213 return ins__raw_scnprintf(ins, bf, size, ops); 214 215 printed = scnprintf(bf, size, "%-6.6s ", ins->name); 216 return printed + ins__scnprintf(ops->locked.ins, bf + printed, 217 size - printed, ops->locked.ops); 218 } 219 220 static void lock__delete(struct ins_operands *ops) 221 { 222 struct ins *ins = ops->locked.ins; 223 224 if (ins && ins->ops->free) 225 ins->ops->free(ops->locked.ops); 226 else 227 ins__delete(ops->locked.ops); 228 229 zfree(&ops->locked.ops); 230 zfree(&ops->target.raw); 231 zfree(&ops->target.name); 232 } 233 234 static struct ins_ops lock_ops = { 235 .free = lock__delete, 236 .parse = lock__parse, 237 .scnprintf = lock__scnprintf, 238 }; 239 240 static int mov__parse(struct ins_operands *ops, struct map *map __maybe_unused) 241 { 242 char *s = strchr(ops->raw, ','), *target, *comment, prev; 243 244 if (s == NULL) 245 return -1; 246 247 *s = '\0'; 248 ops->source.raw = strdup(ops->raw); 249 *s = ','; 250 251 if (ops->source.raw == NULL) 252 return -1; 253 254 target = ++s; 255 #ifdef __arm__ 256 comment = strchr(s, ';'); 257 #else 258 comment = strchr(s, '#'); 259 #endif 260 261 if (comment != NULL) 262 s = comment - 1; 263 else 264 s = strchr(s, '\0') - 1; 265 266 while (s > target && isspace(s[0])) 267 --s; 268 s++; 269 prev = *s; 270 *s = '\0'; 271 272 ops->target.raw = strdup(target); 273 *s = prev; 274 275 if (ops->target.raw == NULL) 276 goto out_free_source; 277 278 if (comment == NULL) 279 return 0; 280 281 while (comment[0] != '\0' && isspace(comment[0])) 282 ++comment; 283 284 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name); 285 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 286 287 return 0; 288 289 out_free_source: 290 zfree(&ops->source.raw); 291 return -1; 292 } 293 294 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 295 struct ins_operands *ops) 296 { 297 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name, 298 ops->source.name ?: ops->source.raw, 299 ops->target.name ?: ops->target.raw); 300 } 301 302 static struct ins_ops mov_ops = { 303 .parse = mov__parse, 304 .scnprintf = mov__scnprintf, 305 }; 306 307 static int dec__parse(struct ins_operands *ops, struct map *map __maybe_unused) 308 { 309 char *target, *comment, *s, prev; 310 311 target = s = ops->raw; 312 313 while (s[0] != '\0' && !isspace(s[0])) 314 ++s; 315 prev = *s; 316 *s = '\0'; 317 318 ops->target.raw = strdup(target); 319 *s = prev; 320 321 if (ops->target.raw == NULL) 322 return -1; 323 324 comment = strchr(s, '#'); 325 if (comment == NULL) 326 return 0; 327 328 while (comment[0] != '\0' && isspace(comment[0])) 329 ++comment; 330 331 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 332 333 return 0; 334 } 335 336 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 337 struct ins_operands *ops) 338 { 339 return scnprintf(bf, size, "%-6.6s %s", ins->name, 340 ops->target.name ?: ops->target.raw); 341 } 342 343 static struct ins_ops dec_ops = { 344 .parse = dec__parse, 345 .scnprintf = dec__scnprintf, 346 }; 347 348 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 349 struct ins_operands *ops __maybe_unused) 350 { 351 return scnprintf(bf, size, "%-6.6s", "nop"); 352 } 353 354 static struct ins_ops nop_ops = { 355 .scnprintf = nop__scnprintf, 356 }; 357 358 static struct ins_ops ret_ops = { 359 .scnprintf = ins__raw_scnprintf, 360 }; 361 362 bool ins__is_ret(const struct ins *ins) 363 { 364 return ins->ops == &ret_ops; 365 } 366 367 static struct ins instructions[] = { 368 { .name = "add", .ops = &mov_ops, }, 369 { .name = "addl", .ops = &mov_ops, }, 370 { .name = "addq", .ops = &mov_ops, }, 371 { .name = "addw", .ops = &mov_ops, }, 372 { .name = "and", .ops = &mov_ops, }, 373 #ifdef __arm__ 374 { .name = "b", .ops = &jump_ops, }, // might also be a call 375 { .name = "bcc", .ops = &jump_ops, }, 376 { .name = "bcs", .ops = &jump_ops, }, 377 { .name = "beq", .ops = &jump_ops, }, 378 { .name = "bge", .ops = &jump_ops, }, 379 { .name = "bgt", .ops = &jump_ops, }, 380 { .name = "bhi", .ops = &jump_ops, }, 381 { .name = "bl", .ops = &call_ops, }, 382 { .name = "bls", .ops = &jump_ops, }, 383 { .name = "blt", .ops = &jump_ops, }, 384 { .name = "blx", .ops = &call_ops, }, 385 { .name = "bne", .ops = &jump_ops, }, 386 #endif 387 { .name = "bts", .ops = &mov_ops, }, 388 { .name = "call", .ops = &call_ops, }, 389 { .name = "callq", .ops = &call_ops, }, 390 { .name = "cmp", .ops = &mov_ops, }, 391 { .name = "cmpb", .ops = &mov_ops, }, 392 { .name = "cmpl", .ops = &mov_ops, }, 393 { .name = "cmpq", .ops = &mov_ops, }, 394 { .name = "cmpw", .ops = &mov_ops, }, 395 { .name = "cmpxch", .ops = &mov_ops, }, 396 { .name = "dec", .ops = &dec_ops, }, 397 { .name = "decl", .ops = &dec_ops, }, 398 { .name = "imul", .ops = &mov_ops, }, 399 { .name = "inc", .ops = &dec_ops, }, 400 { .name = "incl", .ops = &dec_ops, }, 401 { .name = "ja", .ops = &jump_ops, }, 402 { .name = "jae", .ops = &jump_ops, }, 403 { .name = "jb", .ops = &jump_ops, }, 404 { .name = "jbe", .ops = &jump_ops, }, 405 { .name = "jc", .ops = &jump_ops, }, 406 { .name = "jcxz", .ops = &jump_ops, }, 407 { .name = "je", .ops = &jump_ops, }, 408 { .name = "jecxz", .ops = &jump_ops, }, 409 { .name = "jg", .ops = &jump_ops, }, 410 { .name = "jge", .ops = &jump_ops, }, 411 { .name = "jl", .ops = &jump_ops, }, 412 { .name = "jle", .ops = &jump_ops, }, 413 { .name = "jmp", .ops = &jump_ops, }, 414 { .name = "jmpq", .ops = &jump_ops, }, 415 { .name = "jna", .ops = &jump_ops, }, 416 { .name = "jnae", .ops = &jump_ops, }, 417 { .name = "jnb", .ops = &jump_ops, }, 418 { .name = "jnbe", .ops = &jump_ops, }, 419 { .name = "jnc", .ops = &jump_ops, }, 420 { .name = "jne", .ops = &jump_ops, }, 421 { .name = "jng", .ops = &jump_ops, }, 422 { .name = "jnge", .ops = &jump_ops, }, 423 { .name = "jnl", .ops = &jump_ops, }, 424 { .name = "jnle", .ops = &jump_ops, }, 425 { .name = "jno", .ops = &jump_ops, }, 426 { .name = "jnp", .ops = &jump_ops, }, 427 { .name = "jns", .ops = &jump_ops, }, 428 { .name = "jnz", .ops = &jump_ops, }, 429 { .name = "jo", .ops = &jump_ops, }, 430 { .name = "jp", .ops = &jump_ops, }, 431 { .name = "jpe", .ops = &jump_ops, }, 432 { .name = "jpo", .ops = &jump_ops, }, 433 { .name = "jrcxz", .ops = &jump_ops, }, 434 { .name = "js", .ops = &jump_ops, }, 435 { .name = "jz", .ops = &jump_ops, }, 436 { .name = "lea", .ops = &mov_ops, }, 437 { .name = "lock", .ops = &lock_ops, }, 438 { .name = "mov", .ops = &mov_ops, }, 439 { .name = "movb", .ops = &mov_ops, }, 440 { .name = "movdqa",.ops = &mov_ops, }, 441 { .name = "movl", .ops = &mov_ops, }, 442 { .name = "movq", .ops = &mov_ops, }, 443 { .name = "movslq", .ops = &mov_ops, }, 444 { .name = "movzbl", .ops = &mov_ops, }, 445 { .name = "movzwl", .ops = &mov_ops, }, 446 { .name = "nop", .ops = &nop_ops, }, 447 { .name = "nopl", .ops = &nop_ops, }, 448 { .name = "nopw", .ops = &nop_ops, }, 449 { .name = "or", .ops = &mov_ops, }, 450 { .name = "orl", .ops = &mov_ops, }, 451 { .name = "test", .ops = &mov_ops, }, 452 { .name = "testb", .ops = &mov_ops, }, 453 { .name = "testl", .ops = &mov_ops, }, 454 { .name = "xadd", .ops = &mov_ops, }, 455 { .name = "xbeginl", .ops = &jump_ops, }, 456 { .name = "xbeginq", .ops = &jump_ops, }, 457 { .name = "retq", .ops = &ret_ops, }, 458 }; 459 460 static int ins__key_cmp(const void *name, const void *insp) 461 { 462 const struct ins *ins = insp; 463 464 return strcmp(name, ins->name); 465 } 466 467 static int ins__cmp(const void *a, const void *b) 468 { 469 const struct ins *ia = a; 470 const struct ins *ib = b; 471 472 return strcmp(ia->name, ib->name); 473 } 474 475 static void ins__sort(void) 476 { 477 const int nmemb = ARRAY_SIZE(instructions); 478 479 qsort(instructions, nmemb, sizeof(struct ins), ins__cmp); 480 } 481 482 static struct ins *ins__find(const char *name) 483 { 484 const int nmemb = ARRAY_SIZE(instructions); 485 static bool sorted; 486 487 if (!sorted) { 488 ins__sort(); 489 sorted = true; 490 } 491 492 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp); 493 } 494 495 int symbol__alloc_hist(struct symbol *sym) 496 { 497 struct annotation *notes = symbol__annotation(sym); 498 const size_t size = symbol__size(sym); 499 size_t sizeof_sym_hist; 500 501 /* Check for overflow when calculating sizeof_sym_hist */ 502 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64)) 503 return -1; 504 505 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64)); 506 507 /* Check for overflow in zalloc argument */ 508 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src)) 509 / symbol_conf.nr_events) 510 return -1; 511 512 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist); 513 if (notes->src == NULL) 514 return -1; 515 notes->src->sizeof_sym_hist = sizeof_sym_hist; 516 notes->src->nr_histograms = symbol_conf.nr_events; 517 INIT_LIST_HEAD(¬es->src->source); 518 return 0; 519 } 520 521 /* The cycles histogram is lazily allocated. */ 522 static int symbol__alloc_hist_cycles(struct symbol *sym) 523 { 524 struct annotation *notes = symbol__annotation(sym); 525 const size_t size = symbol__size(sym); 526 527 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 528 if (notes->src->cycles_hist == NULL) 529 return -1; 530 return 0; 531 } 532 533 void symbol__annotate_zero_histograms(struct symbol *sym) 534 { 535 struct annotation *notes = symbol__annotation(sym); 536 537 pthread_mutex_lock(¬es->lock); 538 if (notes->src != NULL) { 539 memset(notes->src->histograms, 0, 540 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 541 if (notes->src->cycles_hist) 542 memset(notes->src->cycles_hist, 0, 543 symbol__size(sym) * sizeof(struct cyc_hist)); 544 } 545 pthread_mutex_unlock(¬es->lock); 546 } 547 548 static int __symbol__account_cycles(struct annotation *notes, 549 u64 start, 550 unsigned offset, unsigned cycles, 551 unsigned have_start) 552 { 553 struct cyc_hist *ch; 554 555 ch = notes->src->cycles_hist; 556 /* 557 * For now we can only account one basic block per 558 * final jump. But multiple could be overlapping. 559 * Always account the longest one. So when 560 * a shorter one has been already seen throw it away. 561 * 562 * We separately always account the full cycles. 563 */ 564 ch[offset].num_aggr++; 565 ch[offset].cycles_aggr += cycles; 566 567 if (!have_start && ch[offset].have_start) 568 return 0; 569 if (ch[offset].num) { 570 if (have_start && (!ch[offset].have_start || 571 ch[offset].start > start)) { 572 ch[offset].have_start = 0; 573 ch[offset].cycles = 0; 574 ch[offset].num = 0; 575 if (ch[offset].reset < 0xffff) 576 ch[offset].reset++; 577 } else if (have_start && 578 ch[offset].start < start) 579 return 0; 580 } 581 ch[offset].have_start = have_start; 582 ch[offset].start = start; 583 ch[offset].cycles += cycles; 584 ch[offset].num++; 585 return 0; 586 } 587 588 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map, 589 struct annotation *notes, int evidx, u64 addr) 590 { 591 unsigned offset; 592 struct sym_hist *h; 593 594 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 595 596 if (addr < sym->start || addr >= sym->end) { 597 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 598 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 599 return -ERANGE; 600 } 601 602 offset = addr - sym->start; 603 h = annotation__histogram(notes, evidx); 604 h->sum++; 605 h->addr[offset]++; 606 607 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 608 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name, 609 addr, addr - sym->start, evidx, h->addr[offset]); 610 return 0; 611 } 612 613 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles) 614 { 615 struct annotation *notes = symbol__annotation(sym); 616 617 if (notes->src == NULL) { 618 if (symbol__alloc_hist(sym) < 0) 619 return NULL; 620 } 621 if (!notes->src->cycles_hist && cycles) { 622 if (symbol__alloc_hist_cycles(sym) < 0) 623 return NULL; 624 } 625 return notes; 626 } 627 628 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map, 629 int evidx, u64 addr) 630 { 631 struct annotation *notes; 632 633 if (sym == NULL) 634 return 0; 635 notes = symbol__get_annotation(sym, false); 636 if (notes == NULL) 637 return -ENOMEM; 638 return __symbol__inc_addr_samples(sym, map, notes, evidx, addr); 639 } 640 641 static int symbol__account_cycles(u64 addr, u64 start, 642 struct symbol *sym, unsigned cycles) 643 { 644 struct annotation *notes; 645 unsigned offset; 646 647 if (sym == NULL) 648 return 0; 649 notes = symbol__get_annotation(sym, true); 650 if (notes == NULL) 651 return -ENOMEM; 652 if (addr < sym->start || addr >= sym->end) 653 return -ERANGE; 654 655 if (start) { 656 if (start < sym->start || start >= sym->end) 657 return -ERANGE; 658 if (start >= addr) 659 start = 0; 660 } 661 offset = addr - sym->start; 662 return __symbol__account_cycles(notes, 663 start ? start - sym->start : 0, 664 offset, cycles, 665 !!start); 666 } 667 668 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 669 struct addr_map_symbol *start, 670 unsigned cycles) 671 { 672 u64 saddr = 0; 673 int err; 674 675 if (!cycles) 676 return 0; 677 678 /* 679 * Only set start when IPC can be computed. We can only 680 * compute it when the basic block is completely in a single 681 * function. 682 * Special case the case when the jump is elsewhere, but 683 * it starts on the function start. 684 */ 685 if (start && 686 (start->sym == ams->sym || 687 (ams->sym && 688 start->addr == ams->sym->start + ams->map->start))) 689 saddr = start->al_addr; 690 if (saddr == 0) 691 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 692 ams->addr, 693 start ? start->addr : 0, 694 ams->sym ? ams->sym->start + ams->map->start : 0, 695 saddr); 696 err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles); 697 if (err) 698 pr_debug2("account_cycles failed %d\n", err); 699 return err; 700 } 701 702 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx) 703 { 704 return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr); 705 } 706 707 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip) 708 { 709 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip); 710 } 711 712 static void disasm_line__init_ins(struct disasm_line *dl, struct map *map) 713 { 714 dl->ins = ins__find(dl->name); 715 716 if (dl->ins == NULL) 717 return; 718 719 if (!dl->ins->ops) 720 return; 721 722 if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops, map) < 0) 723 dl->ins = NULL; 724 } 725 726 static int disasm_line__parse(char *line, char **namep, char **rawp) 727 { 728 char *name = line, tmp; 729 730 while (isspace(name[0])) 731 ++name; 732 733 if (name[0] == '\0') 734 return -1; 735 736 *rawp = name + 1; 737 738 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 739 ++*rawp; 740 741 tmp = (*rawp)[0]; 742 (*rawp)[0] = '\0'; 743 *namep = strdup(name); 744 745 if (*namep == NULL) 746 goto out_free_name; 747 748 (*rawp)[0] = tmp; 749 750 if ((*rawp)[0] != '\0') { 751 (*rawp)++; 752 while (isspace((*rawp)[0])) 753 ++(*rawp); 754 } 755 756 return 0; 757 758 out_free_name: 759 zfree(namep); 760 return -1; 761 } 762 763 static struct disasm_line *disasm_line__new(s64 offset, char *line, 764 size_t privsize, int line_nr, 765 struct map *map) 766 { 767 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); 768 769 if (dl != NULL) { 770 dl->offset = offset; 771 dl->line = strdup(line); 772 dl->line_nr = line_nr; 773 if (dl->line == NULL) 774 goto out_delete; 775 776 if (offset != -1) { 777 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0) 778 goto out_free_line; 779 780 disasm_line__init_ins(dl, map); 781 } 782 } 783 784 return dl; 785 786 out_free_line: 787 zfree(&dl->line); 788 out_delete: 789 free(dl); 790 return NULL; 791 } 792 793 void disasm_line__free(struct disasm_line *dl) 794 { 795 zfree(&dl->line); 796 zfree(&dl->name); 797 if (dl->ins && dl->ins->ops->free) 798 dl->ins->ops->free(&dl->ops); 799 else 800 ins__delete(&dl->ops); 801 free(dl); 802 } 803 804 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw) 805 { 806 if (raw || !dl->ins) 807 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw); 808 809 return ins__scnprintf(dl->ins, bf, size, &dl->ops); 810 } 811 812 static void disasm__add(struct list_head *head, struct disasm_line *line) 813 { 814 list_add_tail(&line->node, head); 815 } 816 817 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos) 818 { 819 list_for_each_entry_continue(pos, head, node) 820 if (pos->offset >= 0) 821 return pos; 822 823 return NULL; 824 } 825 826 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, 827 s64 end, const char **path, u64 *nr_samples) 828 { 829 struct source_line *src_line = notes->src->lines; 830 double percent = 0.0; 831 *nr_samples = 0; 832 833 if (src_line) { 834 size_t sizeof_src_line = sizeof(*src_line) + 835 sizeof(src_line->samples) * (src_line->nr_pcnt - 1); 836 837 while (offset < end) { 838 src_line = (void *)notes->src->lines + 839 (sizeof_src_line * offset); 840 841 if (*path == NULL) 842 *path = src_line->path; 843 844 percent += src_line->samples[evidx].percent; 845 *nr_samples += src_line->samples[evidx].nr; 846 offset++; 847 } 848 } else { 849 struct sym_hist *h = annotation__histogram(notes, evidx); 850 unsigned int hits = 0; 851 852 while (offset < end) 853 hits += h->addr[offset++]; 854 855 if (h->sum) { 856 *nr_samples = hits; 857 percent = 100.0 * hits / h->sum; 858 } 859 } 860 861 return percent; 862 } 863 864 static const char *annotate__address_color(struct block_range *br) 865 { 866 double cov = block_range__coverage(br); 867 868 if (cov >= 0) { 869 /* mark red for >75% coverage */ 870 if (cov > 0.75) 871 return PERF_COLOR_RED; 872 873 /* mark dull for <1% coverage */ 874 if (cov < 0.01) 875 return PERF_COLOR_NORMAL; 876 } 877 878 return PERF_COLOR_MAGENTA; 879 } 880 881 static const char *annotate__asm_color(struct block_range *br) 882 { 883 double cov = block_range__coverage(br); 884 885 if (cov >= 0) { 886 /* mark dull for <1% coverage */ 887 if (cov < 0.01) 888 return PERF_COLOR_NORMAL; 889 } 890 891 return PERF_COLOR_BLUE; 892 } 893 894 static void annotate__branch_printf(struct block_range *br, u64 addr) 895 { 896 bool emit_comment = true; 897 898 if (!br) 899 return; 900 901 #if 1 902 if (br->is_target && br->start == addr) { 903 struct block_range *branch = br; 904 double p; 905 906 /* 907 * Find matching branch to our target. 908 */ 909 while (!branch->is_branch) 910 branch = block_range__next(branch); 911 912 p = 100 *(double)br->entry / branch->coverage; 913 914 if (p > 0.1) { 915 if (emit_comment) { 916 emit_comment = false; 917 printf("\t#"); 918 } 919 920 /* 921 * The percentage of coverage joined at this target in relation 922 * to the next branch. 923 */ 924 printf(" +%.2f%%", p); 925 } 926 } 927 #endif 928 if (br->is_branch && br->end == addr) { 929 double p = 100*(double)br->taken / br->coverage; 930 931 if (p > 0.1) { 932 if (emit_comment) { 933 emit_comment = false; 934 printf("\t#"); 935 } 936 937 /* 938 * The percentage of coverage leaving at this branch, and 939 * its prediction ratio. 940 */ 941 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 942 } 943 } 944 } 945 946 947 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start, 948 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed, 949 int max_lines, struct disasm_line *queue) 950 { 951 static const char *prev_line; 952 static const char *prev_color; 953 954 if (dl->offset != -1) { 955 const char *path = NULL; 956 u64 nr_samples; 957 double percent, max_percent = 0.0; 958 double *ppercents = &percent; 959 u64 *psamples = &nr_samples; 960 int i, nr_percent = 1; 961 const char *color; 962 struct annotation *notes = symbol__annotation(sym); 963 s64 offset = dl->offset; 964 const u64 addr = start + offset; 965 struct disasm_line *next; 966 struct block_range *br; 967 968 next = disasm__get_next_ip_line(¬es->src->source, dl); 969 970 if (perf_evsel__is_group_event(evsel)) { 971 nr_percent = evsel->nr_members; 972 ppercents = calloc(nr_percent, sizeof(double)); 973 psamples = calloc(nr_percent, sizeof(u64)); 974 if (ppercents == NULL || psamples == NULL) { 975 return -1; 976 } 977 } 978 979 for (i = 0; i < nr_percent; i++) { 980 percent = disasm__calc_percent(notes, 981 notes->src->lines ? i : evsel->idx + i, 982 offset, 983 next ? next->offset : (s64) len, 984 &path, &nr_samples); 985 986 ppercents[i] = percent; 987 psamples[i] = nr_samples; 988 if (percent > max_percent) 989 max_percent = percent; 990 } 991 992 if (max_percent < min_pcnt) 993 return -1; 994 995 if (max_lines && printed >= max_lines) 996 return 1; 997 998 if (queue != NULL) { 999 list_for_each_entry_from(queue, ¬es->src->source, node) { 1000 if (queue == dl) 1001 break; 1002 disasm_line__print(queue, sym, start, evsel, len, 1003 0, 0, 1, NULL); 1004 } 1005 } 1006 1007 color = get_percent_color(max_percent); 1008 1009 /* 1010 * Also color the filename and line if needed, with 1011 * the same color than the percentage. Don't print it 1012 * twice for close colored addr with the same filename:line 1013 */ 1014 if (path) { 1015 if (!prev_line || strcmp(prev_line, path) 1016 || color != prev_color) { 1017 color_fprintf(stdout, color, " %s", path); 1018 prev_line = path; 1019 prev_color = color; 1020 } 1021 } 1022 1023 for (i = 0; i < nr_percent; i++) { 1024 percent = ppercents[i]; 1025 nr_samples = psamples[i]; 1026 color = get_percent_color(percent); 1027 1028 if (symbol_conf.show_total_period) 1029 color_fprintf(stdout, color, " %7" PRIu64, 1030 nr_samples); 1031 else 1032 color_fprintf(stdout, color, " %7.2f", percent); 1033 } 1034 1035 printf(" : "); 1036 1037 br = block_range__find(addr); 1038 color_fprintf(stdout, annotate__address_color(br), " %" PRIx64 ":", addr); 1039 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line); 1040 annotate__branch_printf(br, addr); 1041 printf("\n"); 1042 1043 if (ppercents != &percent) 1044 free(ppercents); 1045 1046 if (psamples != &nr_samples) 1047 free(psamples); 1048 1049 } else if (max_lines && printed >= max_lines) 1050 return 1; 1051 else { 1052 int width = 8; 1053 1054 if (queue) 1055 return -1; 1056 1057 if (perf_evsel__is_group_event(evsel)) 1058 width *= evsel->nr_members; 1059 1060 if (!*dl->line) 1061 printf(" %*s:\n", width, " "); 1062 else 1063 printf(" %*s: %s\n", width, " ", dl->line); 1064 } 1065 1066 return 0; 1067 } 1068 1069 /* 1070 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1071 * which looks like following 1072 * 1073 * 0000000000415500 <_init>: 1074 * 415500: sub $0x8,%rsp 1075 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1076 * 41550b: test %rax,%rax 1077 * 41550e: je 415515 <_init+0x15> 1078 * 415510: callq 416e70 <__gmon_start__@plt> 1079 * 415515: add $0x8,%rsp 1080 * 415519: retq 1081 * 1082 * it will be parsed and saved into struct disasm_line as 1083 * <offset> <name> <ops.raw> 1084 * 1085 * The offset will be a relative offset from the start of the symbol and -1 1086 * means that it's not a disassembly line so should be treated differently. 1087 * The ops.raw part will be parsed further according to type of the instruction. 1088 */ 1089 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, 1090 FILE *file, size_t privsize, 1091 int *line_nr) 1092 { 1093 struct annotation *notes = symbol__annotation(sym); 1094 struct disasm_line *dl; 1095 char *line = NULL, *parsed_line, *tmp, *tmp2, *c; 1096 size_t line_len; 1097 s64 line_ip, offset = -1; 1098 regmatch_t match[2]; 1099 1100 if (getline(&line, &line_len, file) < 0) 1101 return -1; 1102 1103 if (!line) 1104 return -1; 1105 1106 while (line_len != 0 && isspace(line[line_len - 1])) 1107 line[--line_len] = '\0'; 1108 1109 c = strchr(line, '\n'); 1110 if (c) 1111 *c = 0; 1112 1113 line_ip = -1; 1114 parsed_line = line; 1115 1116 /* /filename:linenr ? Save line number and ignore. */ 1117 if (regexec(&file_lineno, line, 2, match, 0) == 0) { 1118 *line_nr = atoi(line + match[1].rm_so); 1119 return 0; 1120 } 1121 1122 /* 1123 * Strip leading spaces: 1124 */ 1125 tmp = line; 1126 while (*tmp) { 1127 if (*tmp != ' ') 1128 break; 1129 tmp++; 1130 } 1131 1132 if (*tmp) { 1133 /* 1134 * Parse hexa addresses followed by ':' 1135 */ 1136 line_ip = strtoull(tmp, &tmp2, 16); 1137 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0') 1138 line_ip = -1; 1139 } 1140 1141 if (line_ip != -1) { 1142 u64 start = map__rip_2objdump(map, sym->start), 1143 end = map__rip_2objdump(map, sym->end); 1144 1145 offset = line_ip - start; 1146 if ((u64)line_ip < start || (u64)line_ip >= end) 1147 offset = -1; 1148 else 1149 parsed_line = tmp2 + 1; 1150 } 1151 1152 dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, map); 1153 free(line); 1154 (*line_nr)++; 1155 1156 if (dl == NULL) 1157 return -1; 1158 1159 if (dl->ops.target.offset == UINT64_MAX) 1160 dl->ops.target.offset = dl->ops.target.addr - 1161 map__rip_2objdump(map, sym->start); 1162 1163 /* kcore has no symbols, so add the call target name */ 1164 if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) { 1165 struct addr_map_symbol target = { 1166 .map = map, 1167 .addr = dl->ops.target.addr, 1168 }; 1169 1170 if (!map_groups__find_ams(&target) && 1171 target.sym->start == target.al_addr) 1172 dl->ops.target.name = strdup(target.sym->name); 1173 } 1174 1175 disasm__add(¬es->src->source, dl); 1176 1177 return 0; 1178 } 1179 1180 static __attribute__((constructor)) void symbol__init_regexpr(void) 1181 { 1182 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1183 } 1184 1185 static void delete_last_nop(struct symbol *sym) 1186 { 1187 struct annotation *notes = symbol__annotation(sym); 1188 struct list_head *list = ¬es->src->source; 1189 struct disasm_line *dl; 1190 1191 while (!list_empty(list)) { 1192 dl = list_entry(list->prev, struct disasm_line, node); 1193 1194 if (dl->ins && dl->ins->ops) { 1195 if (dl->ins->ops != &nop_ops) 1196 return; 1197 } else { 1198 if (!strstr(dl->line, " nop ") && 1199 !strstr(dl->line, " nopl ") && 1200 !strstr(dl->line, " nopw ")) 1201 return; 1202 } 1203 1204 list_del(&dl->node); 1205 disasm_line__free(dl); 1206 } 1207 } 1208 1209 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map, 1210 int errnum, char *buf, size_t buflen) 1211 { 1212 struct dso *dso = map->dso; 1213 1214 BUG_ON(buflen == 0); 1215 1216 if (errnum >= 0) { 1217 str_error_r(errnum, buf, buflen); 1218 return 0; 1219 } 1220 1221 switch (errnum) { 1222 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1223 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1224 char *build_id_msg = NULL; 1225 1226 if (dso->has_build_id) { 1227 build_id__sprintf(dso->build_id, 1228 sizeof(dso->build_id), bf + 15); 1229 build_id_msg = bf; 1230 } 1231 scnprintf(buf, buflen, 1232 "No vmlinux file%s\nwas found in the path.\n\n" 1233 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1234 "Please use:\n\n" 1235 " perf buildid-cache -vu vmlinux\n\n" 1236 "or:\n\n" 1237 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1238 } 1239 break; 1240 default: 1241 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1242 break; 1243 } 1244 1245 return 0; 1246 } 1247 1248 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1249 { 1250 char linkname[PATH_MAX]; 1251 char *build_id_filename; 1252 1253 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1254 !dso__is_kcore(dso)) 1255 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1256 1257 build_id_filename = dso__build_id_filename(dso, NULL, 0); 1258 if (build_id_filename) { 1259 __symbol__join_symfs(filename, filename_size, build_id_filename); 1260 free(build_id_filename); 1261 } else { 1262 if (dso->has_build_id) 1263 return ENOMEM; 1264 goto fallback; 1265 } 1266 1267 if (dso__is_kcore(dso) || 1268 readlink(filename, linkname, sizeof(linkname)) < 0 || 1269 strstr(linkname, DSO__NAME_KALLSYMS) || 1270 access(filename, R_OK)) { 1271 fallback: 1272 /* 1273 * If we don't have build-ids or the build-id file isn't in the 1274 * cache, or is just a kallsyms file, well, lets hope that this 1275 * DSO is the same as when 'perf record' ran. 1276 */ 1277 __symbol__join_symfs(filename, filename_size, dso->long_name); 1278 } 1279 1280 return 0; 1281 } 1282 1283 int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize) 1284 { 1285 struct dso *dso = map->dso; 1286 char command[PATH_MAX * 2]; 1287 FILE *file; 1288 char symfs_filename[PATH_MAX]; 1289 struct kcore_extract kce; 1290 bool delete_extract = false; 1291 int stdout_fd[2]; 1292 int lineno = 0; 1293 int nline; 1294 pid_t pid; 1295 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1296 1297 if (err) 1298 return err; 1299 1300 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1301 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1302 map->unmap_ip(map, sym->end)); 1303 1304 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1305 dso, dso->long_name, sym, sym->name); 1306 1307 if (dso__is_kcore(dso)) { 1308 kce.kcore_filename = symfs_filename; 1309 kce.addr = map__rip_2objdump(map, sym->start); 1310 kce.offs = sym->start; 1311 kce.len = sym->end - sym->start; 1312 if (!kcore_extract__create(&kce)) { 1313 delete_extract = true; 1314 strlcpy(symfs_filename, kce.extract_filename, 1315 sizeof(symfs_filename)); 1316 } 1317 } else if (dso__needs_decompress(dso)) { 1318 char tmp[PATH_MAX]; 1319 struct kmod_path m; 1320 int fd; 1321 bool ret; 1322 1323 if (kmod_path__parse_ext(&m, symfs_filename)) 1324 goto out; 1325 1326 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX"); 1327 1328 fd = mkstemp(tmp); 1329 if (fd < 0) { 1330 free(m.ext); 1331 goto out; 1332 } 1333 1334 ret = decompress_to_file(m.ext, symfs_filename, fd); 1335 1336 if (ret) 1337 pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename); 1338 1339 free(m.ext); 1340 close(fd); 1341 1342 if (!ret) 1343 goto out; 1344 1345 strcpy(symfs_filename, tmp); 1346 } 1347 1348 snprintf(command, sizeof(command), 1349 "%s %s%s --start-address=0x%016" PRIx64 1350 " --stop-address=0x%016" PRIx64 1351 " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand", 1352 objdump_path ? objdump_path : "objdump", 1353 disassembler_style ? "-M " : "", 1354 disassembler_style ? disassembler_style : "", 1355 map__rip_2objdump(map, sym->start), 1356 map__rip_2objdump(map, sym->end), 1357 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw", 1358 symbol_conf.annotate_src ? "-S" : "", 1359 symfs_filename, symfs_filename); 1360 1361 pr_debug("Executing: %s\n", command); 1362 1363 err = -1; 1364 if (pipe(stdout_fd) < 0) { 1365 pr_err("Failure creating the pipe to run %s\n", command); 1366 goto out_remove_tmp; 1367 } 1368 1369 pid = fork(); 1370 if (pid < 0) { 1371 pr_err("Failure forking to run %s\n", command); 1372 goto out_close_stdout; 1373 } 1374 1375 if (pid == 0) { 1376 close(stdout_fd[0]); 1377 dup2(stdout_fd[1], 1); 1378 close(stdout_fd[1]); 1379 execl("/bin/sh", "sh", "-c", command, NULL); 1380 perror(command); 1381 exit(-1); 1382 } 1383 1384 close(stdout_fd[1]); 1385 1386 file = fdopen(stdout_fd[0], "r"); 1387 if (!file) { 1388 pr_err("Failure creating FILE stream for %s\n", command); 1389 /* 1390 * If we were using debug info should retry with 1391 * original binary. 1392 */ 1393 goto out_remove_tmp; 1394 } 1395 1396 nline = 0; 1397 while (!feof(file)) { 1398 if (symbol__parse_objdump_line(sym, map, file, privsize, 1399 &lineno) < 0) 1400 break; 1401 nline++; 1402 } 1403 1404 if (nline == 0) 1405 pr_err("No output from %s\n", command); 1406 1407 /* 1408 * kallsyms does not have symbol sizes so there may a nop at the end. 1409 * Remove it. 1410 */ 1411 if (dso__is_kcore(dso)) 1412 delete_last_nop(sym); 1413 1414 fclose(file); 1415 err = 0; 1416 out_remove_tmp: 1417 close(stdout_fd[0]); 1418 1419 if (dso__needs_decompress(dso)) 1420 unlink(symfs_filename); 1421 1422 if (delete_extract) 1423 kcore_extract__delete(&kce); 1424 out: 1425 return err; 1426 1427 out_close_stdout: 1428 close(stdout_fd[1]); 1429 goto out_remove_tmp; 1430 } 1431 1432 static void insert_source_line(struct rb_root *root, struct source_line *src_line) 1433 { 1434 struct source_line *iter; 1435 struct rb_node **p = &root->rb_node; 1436 struct rb_node *parent = NULL; 1437 int i, ret; 1438 1439 while (*p != NULL) { 1440 parent = *p; 1441 iter = rb_entry(parent, struct source_line, node); 1442 1443 ret = strcmp(iter->path, src_line->path); 1444 if (ret == 0) { 1445 for (i = 0; i < src_line->nr_pcnt; i++) 1446 iter->samples[i].percent_sum += src_line->samples[i].percent; 1447 return; 1448 } 1449 1450 if (ret < 0) 1451 p = &(*p)->rb_left; 1452 else 1453 p = &(*p)->rb_right; 1454 } 1455 1456 for (i = 0; i < src_line->nr_pcnt; i++) 1457 src_line->samples[i].percent_sum = src_line->samples[i].percent; 1458 1459 rb_link_node(&src_line->node, parent, p); 1460 rb_insert_color(&src_line->node, root); 1461 } 1462 1463 static int cmp_source_line(struct source_line *a, struct source_line *b) 1464 { 1465 int i; 1466 1467 for (i = 0; i < a->nr_pcnt; i++) { 1468 if (a->samples[i].percent_sum == b->samples[i].percent_sum) 1469 continue; 1470 return a->samples[i].percent_sum > b->samples[i].percent_sum; 1471 } 1472 1473 return 0; 1474 } 1475 1476 static void __resort_source_line(struct rb_root *root, struct source_line *src_line) 1477 { 1478 struct source_line *iter; 1479 struct rb_node **p = &root->rb_node; 1480 struct rb_node *parent = NULL; 1481 1482 while (*p != NULL) { 1483 parent = *p; 1484 iter = rb_entry(parent, struct source_line, node); 1485 1486 if (cmp_source_line(src_line, iter)) 1487 p = &(*p)->rb_left; 1488 else 1489 p = &(*p)->rb_right; 1490 } 1491 1492 rb_link_node(&src_line->node, parent, p); 1493 rb_insert_color(&src_line->node, root); 1494 } 1495 1496 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 1497 { 1498 struct source_line *src_line; 1499 struct rb_node *node; 1500 1501 node = rb_first(src_root); 1502 while (node) { 1503 struct rb_node *next; 1504 1505 src_line = rb_entry(node, struct source_line, node); 1506 next = rb_next(node); 1507 rb_erase(node, src_root); 1508 1509 __resort_source_line(dest_root, src_line); 1510 node = next; 1511 } 1512 } 1513 1514 static void symbol__free_source_line(struct symbol *sym, int len) 1515 { 1516 struct annotation *notes = symbol__annotation(sym); 1517 struct source_line *src_line = notes->src->lines; 1518 size_t sizeof_src_line; 1519 int i; 1520 1521 sizeof_src_line = sizeof(*src_line) + 1522 (sizeof(src_line->samples) * (src_line->nr_pcnt - 1)); 1523 1524 for (i = 0; i < len; i++) { 1525 free_srcline(src_line->path); 1526 src_line = (void *)src_line + sizeof_src_line; 1527 } 1528 1529 zfree(¬es->src->lines); 1530 } 1531 1532 /* Get the filename:line for the colored entries */ 1533 static int symbol__get_source_line(struct symbol *sym, struct map *map, 1534 struct perf_evsel *evsel, 1535 struct rb_root *root, int len) 1536 { 1537 u64 start; 1538 int i, k; 1539 int evidx = evsel->idx; 1540 struct source_line *src_line; 1541 struct annotation *notes = symbol__annotation(sym); 1542 struct sym_hist *h = annotation__histogram(notes, evidx); 1543 struct rb_root tmp_root = RB_ROOT; 1544 int nr_pcnt = 1; 1545 u64 h_sum = h->sum; 1546 size_t sizeof_src_line = sizeof(struct source_line); 1547 1548 if (perf_evsel__is_group_event(evsel)) { 1549 for (i = 1; i < evsel->nr_members; i++) { 1550 h = annotation__histogram(notes, evidx + i); 1551 h_sum += h->sum; 1552 } 1553 nr_pcnt = evsel->nr_members; 1554 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples); 1555 } 1556 1557 if (!h_sum) 1558 return 0; 1559 1560 src_line = notes->src->lines = calloc(len, sizeof_src_line); 1561 if (!notes->src->lines) 1562 return -1; 1563 1564 start = map__rip_2objdump(map, sym->start); 1565 1566 for (i = 0; i < len; i++) { 1567 u64 offset; 1568 double percent_max = 0.0; 1569 1570 src_line->nr_pcnt = nr_pcnt; 1571 1572 for (k = 0; k < nr_pcnt; k++) { 1573 h = annotation__histogram(notes, evidx + k); 1574 src_line->samples[k].percent = 100.0 * h->addr[i] / h->sum; 1575 1576 if (src_line->samples[k].percent > percent_max) 1577 percent_max = src_line->samples[k].percent; 1578 } 1579 1580 if (percent_max <= 0.5) 1581 goto next; 1582 1583 offset = start + i; 1584 src_line->path = get_srcline(map->dso, offset, NULL, false); 1585 insert_source_line(&tmp_root, src_line); 1586 1587 next: 1588 src_line = (void *)src_line + sizeof_src_line; 1589 } 1590 1591 resort_source_line(root, &tmp_root); 1592 return 0; 1593 } 1594 1595 static void print_summary(struct rb_root *root, const char *filename) 1596 { 1597 struct source_line *src_line; 1598 struct rb_node *node; 1599 1600 printf("\nSorted summary for file %s\n", filename); 1601 printf("----------------------------------------------\n\n"); 1602 1603 if (RB_EMPTY_ROOT(root)) { 1604 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 1605 return; 1606 } 1607 1608 node = rb_first(root); 1609 while (node) { 1610 double percent, percent_max = 0.0; 1611 const char *color; 1612 char *path; 1613 int i; 1614 1615 src_line = rb_entry(node, struct source_line, node); 1616 for (i = 0; i < src_line->nr_pcnt; i++) { 1617 percent = src_line->samples[i].percent_sum; 1618 color = get_percent_color(percent); 1619 color_fprintf(stdout, color, " %7.2f", percent); 1620 1621 if (percent > percent_max) 1622 percent_max = percent; 1623 } 1624 1625 path = src_line->path; 1626 color = get_percent_color(percent_max); 1627 color_fprintf(stdout, color, " %s\n", path); 1628 1629 node = rb_next(node); 1630 } 1631 } 1632 1633 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) 1634 { 1635 struct annotation *notes = symbol__annotation(sym); 1636 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 1637 u64 len = symbol__size(sym), offset; 1638 1639 for (offset = 0; offset < len; ++offset) 1640 if (h->addr[offset] != 0) 1641 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 1642 sym->start + offset, h->addr[offset]); 1643 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum); 1644 } 1645 1646 int symbol__annotate_printf(struct symbol *sym, struct map *map, 1647 struct perf_evsel *evsel, bool full_paths, 1648 int min_pcnt, int max_lines, int context) 1649 { 1650 struct dso *dso = map->dso; 1651 char *filename; 1652 const char *d_filename; 1653 const char *evsel_name = perf_evsel__name(evsel); 1654 struct annotation *notes = symbol__annotation(sym); 1655 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 1656 struct disasm_line *pos, *queue = NULL; 1657 u64 start = map__rip_2objdump(map, sym->start); 1658 int printed = 2, queue_len = 0; 1659 int more = 0; 1660 u64 len; 1661 int width = 8; 1662 int graph_dotted_len; 1663 1664 filename = strdup(dso->long_name); 1665 if (!filename) 1666 return -ENOMEM; 1667 1668 if (full_paths) 1669 d_filename = filename; 1670 else 1671 d_filename = basename(filename); 1672 1673 len = symbol__size(sym); 1674 1675 if (perf_evsel__is_group_event(evsel)) 1676 width *= evsel->nr_members; 1677 1678 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n", 1679 width, width, "Percent", d_filename, evsel_name, h->sum); 1680 1681 printf("%-*.*s----\n", 1682 graph_dotted_len, graph_dotted_len, graph_dotted_line); 1683 1684 if (verbose) 1685 symbol__annotate_hits(sym, evsel); 1686 1687 list_for_each_entry(pos, ¬es->src->source, node) { 1688 if (context && queue == NULL) { 1689 queue = pos; 1690 queue_len = 0; 1691 } 1692 1693 switch (disasm_line__print(pos, sym, start, evsel, len, 1694 min_pcnt, printed, max_lines, 1695 queue)) { 1696 case 0: 1697 ++printed; 1698 if (context) { 1699 printed += queue_len; 1700 queue = NULL; 1701 queue_len = 0; 1702 } 1703 break; 1704 case 1: 1705 /* filtered by max_lines */ 1706 ++more; 1707 break; 1708 case -1: 1709 default: 1710 /* 1711 * Filtered by min_pcnt or non IP lines when 1712 * context != 0 1713 */ 1714 if (!context) 1715 break; 1716 if (queue_len == context) 1717 queue = list_entry(queue->node.next, typeof(*queue), node); 1718 else 1719 ++queue_len; 1720 break; 1721 } 1722 } 1723 1724 free(filename); 1725 1726 return more; 1727 } 1728 1729 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 1730 { 1731 struct annotation *notes = symbol__annotation(sym); 1732 struct sym_hist *h = annotation__histogram(notes, evidx); 1733 1734 memset(h, 0, notes->src->sizeof_sym_hist); 1735 } 1736 1737 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 1738 { 1739 struct annotation *notes = symbol__annotation(sym); 1740 struct sym_hist *h = annotation__histogram(notes, evidx); 1741 int len = symbol__size(sym), offset; 1742 1743 h->sum = 0; 1744 for (offset = 0; offset < len; ++offset) { 1745 h->addr[offset] = h->addr[offset] * 7 / 8; 1746 h->sum += h->addr[offset]; 1747 } 1748 } 1749 1750 void disasm__purge(struct list_head *head) 1751 { 1752 struct disasm_line *pos, *n; 1753 1754 list_for_each_entry_safe(pos, n, head, node) { 1755 list_del(&pos->node); 1756 disasm_line__free(pos); 1757 } 1758 } 1759 1760 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 1761 { 1762 size_t printed; 1763 1764 if (dl->offset == -1) 1765 return fprintf(fp, "%s\n", dl->line); 1766 1767 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name); 1768 1769 if (dl->ops.raw[0] != '\0') { 1770 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 1771 dl->ops.raw); 1772 } 1773 1774 return printed + fprintf(fp, "\n"); 1775 } 1776 1777 size_t disasm__fprintf(struct list_head *head, FILE *fp) 1778 { 1779 struct disasm_line *pos; 1780 size_t printed = 0; 1781 1782 list_for_each_entry(pos, head, node) 1783 printed += disasm_line__fprintf(pos, fp); 1784 1785 return printed; 1786 } 1787 1788 int symbol__tty_annotate(struct symbol *sym, struct map *map, 1789 struct perf_evsel *evsel, bool print_lines, 1790 bool full_paths, int min_pcnt, int max_lines) 1791 { 1792 struct dso *dso = map->dso; 1793 struct rb_root source_line = RB_ROOT; 1794 u64 len; 1795 1796 if (symbol__disassemble(sym, map, 0) < 0) 1797 return -1; 1798 1799 len = symbol__size(sym); 1800 1801 if (print_lines) { 1802 srcline_full_filename = full_paths; 1803 symbol__get_source_line(sym, map, evsel, &source_line, len); 1804 print_summary(&source_line, dso->long_name); 1805 } 1806 1807 symbol__annotate_printf(sym, map, evsel, full_paths, 1808 min_pcnt, max_lines, 0); 1809 if (print_lines) 1810 symbol__free_source_line(sym, len); 1811 1812 disasm__purge(&symbol__annotation(sym)->src->source); 1813 1814 return 0; 1815 } 1816 1817 bool ui__has_annotation(void) 1818 { 1819 return use_browser == 1 && perf_hpp_list.sym; 1820 } 1821