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