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