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