1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 4 * 5 * Parts came from builtin-annotate.c, see those files for further 6 * copyright notes. 7 */ 8 9 #include <errno.h> 10 #include <inttypes.h> 11 #include <libgen.h> 12 #include <stdlib.h> 13 #include <bpf/bpf.h> 14 #include <bpf/btf.h> 15 #include <bpf/libbpf.h> 16 #include <linux/btf.h> 17 #include "util.h" // hex_width() 18 #include "ui/ui.h" 19 #include "sort.h" 20 #include "build-id.h" 21 #include "color.h" 22 #include "config.h" 23 #include "dso.h" 24 #include "env.h" 25 #include "map.h" 26 #include "map_groups.h" 27 #include "symbol.h" 28 #include "srcline.h" 29 #include "units.h" 30 #include "debug.h" 31 #include "annotate.h" 32 #include "evsel.h" 33 #include "evlist.h" 34 #include "bpf-event.h" 35 #include "block-range.h" 36 #include "string2.h" 37 #include "util/event.h" 38 #include "arch/common.h" 39 #include <regex.h> 40 #include <pthread.h> 41 #include <linux/bitops.h> 42 #include <linux/kernel.h> 43 #include <linux/string.h> 44 #include <bpf/libbpf.h> 45 #include <subcmd/parse-options.h> 46 #include <subcmd/run-command.h> 47 48 /* FIXME: For the HE_COLORSET */ 49 #include "ui/browser.h" 50 51 /* 52 * FIXME: Using the same values as slang.h, 53 * but that header may not be available everywhere 54 */ 55 #define LARROW_CHAR ((unsigned char)',') 56 #define RARROW_CHAR ((unsigned char)'+') 57 #define DARROW_CHAR ((unsigned char)'.') 58 #define UARROW_CHAR ((unsigned char)'-') 59 60 #include <linux/ctype.h> 61 62 struct annotation_options annotation__default_options = { 63 .use_offset = true, 64 .jump_arrows = true, 65 .annotate_src = true, 66 .offset_level = ANNOTATION__OFFSET_JUMP_TARGETS, 67 .percent_type = PERCENT_PERIOD_LOCAL, 68 }; 69 70 static regex_t file_lineno; 71 72 static struct ins_ops *ins__find(struct arch *arch, const char *name); 73 static void ins__sort(struct arch *arch); 74 static int disasm_line__parse(char *line, const char **namep, char **rawp); 75 76 struct arch { 77 const char *name; 78 struct ins *instructions; 79 size_t nr_instructions; 80 size_t nr_instructions_allocated; 81 struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name); 82 bool sorted_instructions; 83 bool initialized; 84 void *priv; 85 unsigned int model; 86 unsigned int family; 87 int (*init)(struct arch *arch, char *cpuid); 88 bool (*ins_is_fused)(struct arch *arch, const char *ins1, 89 const char *ins2); 90 struct { 91 char comment_char; 92 char skip_functions_char; 93 } objdump; 94 }; 95 96 static struct ins_ops call_ops; 97 static struct ins_ops dec_ops; 98 static struct ins_ops jump_ops; 99 static struct ins_ops mov_ops; 100 static struct ins_ops nop_ops; 101 static struct ins_ops lock_ops; 102 static struct ins_ops ret_ops; 103 104 static int arch__grow_instructions(struct arch *arch) 105 { 106 struct ins *new_instructions; 107 size_t new_nr_allocated; 108 109 if (arch->nr_instructions_allocated == 0 && arch->instructions) 110 goto grow_from_non_allocated_table; 111 112 new_nr_allocated = arch->nr_instructions_allocated + 128; 113 new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins)); 114 if (new_instructions == NULL) 115 return -1; 116 117 out_update_instructions: 118 arch->instructions = new_instructions; 119 arch->nr_instructions_allocated = new_nr_allocated; 120 return 0; 121 122 grow_from_non_allocated_table: 123 new_nr_allocated = arch->nr_instructions + 128; 124 new_instructions = calloc(new_nr_allocated, sizeof(struct ins)); 125 if (new_instructions == NULL) 126 return -1; 127 128 memcpy(new_instructions, arch->instructions, arch->nr_instructions); 129 goto out_update_instructions; 130 } 131 132 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops) 133 { 134 struct ins *ins; 135 136 if (arch->nr_instructions == arch->nr_instructions_allocated && 137 arch__grow_instructions(arch)) 138 return -1; 139 140 ins = &arch->instructions[arch->nr_instructions]; 141 ins->name = strdup(name); 142 if (!ins->name) 143 return -1; 144 145 ins->ops = ops; 146 arch->nr_instructions++; 147 148 ins__sort(arch); 149 return 0; 150 } 151 152 #include "arch/arc/annotate/instructions.c" 153 #include "arch/arm/annotate/instructions.c" 154 #include "arch/arm64/annotate/instructions.c" 155 #include "arch/csky/annotate/instructions.c" 156 #include "arch/x86/annotate/instructions.c" 157 #include "arch/powerpc/annotate/instructions.c" 158 #include "arch/s390/annotate/instructions.c" 159 #include "arch/sparc/annotate/instructions.c" 160 161 static struct arch architectures[] = { 162 { 163 .name = "arc", 164 .init = arc__annotate_init, 165 }, 166 { 167 .name = "arm", 168 .init = arm__annotate_init, 169 }, 170 { 171 .name = "arm64", 172 .init = arm64__annotate_init, 173 }, 174 { 175 .name = "csky", 176 .init = csky__annotate_init, 177 }, 178 { 179 .name = "x86", 180 .init = x86__annotate_init, 181 .instructions = x86__instructions, 182 .nr_instructions = ARRAY_SIZE(x86__instructions), 183 .ins_is_fused = x86__ins_is_fused, 184 .objdump = { 185 .comment_char = '#', 186 }, 187 }, 188 { 189 .name = "powerpc", 190 .init = powerpc__annotate_init, 191 }, 192 { 193 .name = "s390", 194 .init = s390__annotate_init, 195 .objdump = { 196 .comment_char = '#', 197 }, 198 }, 199 { 200 .name = "sparc", 201 .init = sparc__annotate_init, 202 .objdump = { 203 .comment_char = '#', 204 }, 205 }, 206 }; 207 208 static void ins__delete(struct ins_operands *ops) 209 { 210 if (ops == NULL) 211 return; 212 zfree(&ops->source.raw); 213 zfree(&ops->source.name); 214 zfree(&ops->target.raw); 215 zfree(&ops->target.name); 216 } 217 218 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 219 struct ins_operands *ops, int max_ins_name) 220 { 221 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw); 222 } 223 224 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 225 struct ins_operands *ops, int max_ins_name) 226 { 227 if (ins->ops->scnprintf) 228 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name); 229 230 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 231 } 232 233 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2) 234 { 235 if (!arch || !arch->ins_is_fused) 236 return false; 237 238 return arch->ins_is_fused(arch, ins1, ins2); 239 } 240 241 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 242 { 243 char *endptr, *tok, *name; 244 struct map *map = ms->map; 245 struct addr_map_symbol target = { 246 .map = map, 247 }; 248 249 ops->target.addr = strtoull(ops->raw, &endptr, 16); 250 251 name = strchr(endptr, '<'); 252 if (name == NULL) 253 goto indirect_call; 254 255 name++; 256 257 if (arch->objdump.skip_functions_char && 258 strchr(name, arch->objdump.skip_functions_char)) 259 return -1; 260 261 tok = strchr(name, '>'); 262 if (tok == NULL) 263 return -1; 264 265 *tok = '\0'; 266 ops->target.name = strdup(name); 267 *tok = '>'; 268 269 if (ops->target.name == NULL) 270 return -1; 271 find_target: 272 target.addr = map__objdump_2mem(map, ops->target.addr); 273 274 if (map_groups__find_ams(map->groups, &target) == 0 && 275 map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr) 276 ops->target.sym = target.sym; 277 278 return 0; 279 280 indirect_call: 281 tok = strchr(endptr, '*'); 282 if (tok != NULL) { 283 endptr++; 284 285 /* Indirect call can use a non-rip register and offset: callq *0x8(%rbx). 286 * Do not parse such instruction. */ 287 if (strstr(endptr, "(%r") == NULL) 288 ops->target.addr = strtoull(endptr, NULL, 16); 289 } 290 goto find_target; 291 } 292 293 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 294 struct ins_operands *ops, int max_ins_name) 295 { 296 if (ops->target.sym) 297 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 298 299 if (ops->target.addr == 0) 300 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 301 302 if (ops->target.name) 303 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name); 304 305 return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr); 306 } 307 308 static struct ins_ops call_ops = { 309 .parse = call__parse, 310 .scnprintf = call__scnprintf, 311 }; 312 313 bool ins__is_call(const struct ins *ins) 314 { 315 return ins->ops == &call_ops || ins->ops == &s390_call_ops; 316 } 317 318 /* 319 * Prevents from matching commas in the comment section, e.g.: 320 * ffff200008446e70: b.cs ffff2000084470f4 <generic_exec_single+0x314> // b.hs, b.nlast 321 */ 322 static inline const char *validate_comma(const char *c, struct ins_operands *ops) 323 { 324 if (ops->raw_comment && c > ops->raw_comment) 325 return NULL; 326 327 return c; 328 } 329 330 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 331 { 332 struct map *map = ms->map; 333 struct symbol *sym = ms->sym; 334 struct addr_map_symbol target = { 335 .map = map, 336 }; 337 const char *c = strchr(ops->raw, ','); 338 u64 start, end; 339 340 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char); 341 c = validate_comma(c, ops); 342 343 /* 344 * Examples of lines to parse for the _cpp_lex_token@@Base 345 * function: 346 * 347 * 1159e6c: jne 115aa32 <_cpp_lex_token@@Base+0xf92> 348 * 1159e8b: jne c469be <cpp_named_operator2name@@Base+0xa72> 349 * 350 * The first is a jump to an offset inside the same function, 351 * the second is to another function, i.e. that 0xa72 is an 352 * offset in the cpp_named_operator2name@@base function. 353 */ 354 /* 355 * skip over possible up to 2 operands to get to address, e.g.: 356 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> 357 */ 358 if (c++ != NULL) { 359 ops->target.addr = strtoull(c, NULL, 16); 360 if (!ops->target.addr) { 361 c = strchr(c, ','); 362 c = validate_comma(c, ops); 363 if (c++ != NULL) 364 ops->target.addr = strtoull(c, NULL, 16); 365 } 366 } else { 367 ops->target.addr = strtoull(ops->raw, NULL, 16); 368 } 369 370 target.addr = map__objdump_2mem(map, ops->target.addr); 371 start = map->unmap_ip(map, sym->start), 372 end = map->unmap_ip(map, sym->end); 373 374 ops->target.outside = target.addr < start || target.addr > end; 375 376 /* 377 * FIXME: things like this in _cpp_lex_token (gcc's cc1 program): 378 379 cpp_named_operator2name@@Base+0xa72 380 381 * Point to a place that is after the cpp_named_operator2name 382 * boundaries, i.e. in the ELF symbol table for cc1 383 * cpp_named_operator2name is marked as being 32-bytes long, but it in 384 * fact is much larger than that, so we seem to need a symbols__find() 385 * routine that looks for >= current->start and < next_symbol->start, 386 * possibly just for C++ objects? 387 * 388 * For now lets just make some progress by marking jumps to outside the 389 * current function as call like. 390 * 391 * Actual navigation will come next, with further understanding of how 392 * the symbol searching and disassembly should be done. 393 */ 394 if (map_groups__find_ams(map->groups, &target) == 0 && 395 map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr) 396 ops->target.sym = target.sym; 397 398 if (!ops->target.outside) { 399 ops->target.offset = target.addr - start; 400 ops->target.offset_avail = true; 401 } else { 402 ops->target.offset_avail = false; 403 } 404 405 return 0; 406 } 407 408 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 409 struct ins_operands *ops, int max_ins_name) 410 { 411 const char *c; 412 413 if (!ops->target.addr || ops->target.offset < 0) 414 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 415 416 if (ops->target.outside && ops->target.sym != NULL) 417 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 418 419 c = strchr(ops->raw, ','); 420 c = validate_comma(c, ops); 421 422 if (c != NULL) { 423 const char *c2 = strchr(c + 1, ','); 424 425 c2 = validate_comma(c2, ops); 426 /* check for 3-op insn */ 427 if (c2 != NULL) 428 c = c2; 429 c++; 430 431 /* mirror arch objdump's space-after-comma style */ 432 if (*c == ' ') 433 c++; 434 } 435 436 return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name, 437 ins->name, c ? c - ops->raw : 0, ops->raw, 438 ops->target.offset); 439 } 440 441 static struct ins_ops jump_ops = { 442 .parse = jump__parse, 443 .scnprintf = jump__scnprintf, 444 }; 445 446 bool ins__is_jump(const struct ins *ins) 447 { 448 return ins->ops == &jump_ops; 449 } 450 451 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 452 { 453 char *endptr, *name, *t; 454 455 if (strstr(raw, "(%rip)") == NULL) 456 return 0; 457 458 *addrp = strtoull(comment, &endptr, 16); 459 if (endptr == comment) 460 return 0; 461 name = strchr(endptr, '<'); 462 if (name == NULL) 463 return -1; 464 465 name++; 466 467 t = strchr(name, '>'); 468 if (t == NULL) 469 return 0; 470 471 *t = '\0'; 472 *namep = strdup(name); 473 *t = '>'; 474 475 return 0; 476 } 477 478 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 479 { 480 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 481 if (ops->locked.ops == NULL) 482 return 0; 483 484 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0) 485 goto out_free_ops; 486 487 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name); 488 489 if (ops->locked.ins.ops == NULL) 490 goto out_free_ops; 491 492 if (ops->locked.ins.ops->parse && 493 ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0) 494 goto out_free_ops; 495 496 return 0; 497 498 out_free_ops: 499 zfree(&ops->locked.ops); 500 return 0; 501 } 502 503 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 504 struct ins_operands *ops, int max_ins_name) 505 { 506 int printed; 507 508 if (ops->locked.ins.ops == NULL) 509 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 510 511 printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name); 512 return printed + ins__scnprintf(&ops->locked.ins, bf + printed, 513 size - printed, ops->locked.ops, max_ins_name); 514 } 515 516 static void lock__delete(struct ins_operands *ops) 517 { 518 struct ins *ins = &ops->locked.ins; 519 520 if (ins->ops && ins->ops->free) 521 ins->ops->free(ops->locked.ops); 522 else 523 ins__delete(ops->locked.ops); 524 525 zfree(&ops->locked.ops); 526 zfree(&ops->target.raw); 527 zfree(&ops->target.name); 528 } 529 530 static struct ins_ops lock_ops = { 531 .free = lock__delete, 532 .parse = lock__parse, 533 .scnprintf = lock__scnprintf, 534 }; 535 536 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 537 { 538 char *s = strchr(ops->raw, ','), *target, *comment, prev; 539 540 if (s == NULL) 541 return -1; 542 543 *s = '\0'; 544 ops->source.raw = strdup(ops->raw); 545 *s = ','; 546 547 if (ops->source.raw == NULL) 548 return -1; 549 550 target = ++s; 551 comment = strchr(s, arch->objdump.comment_char); 552 553 if (comment != NULL) 554 s = comment - 1; 555 else 556 s = strchr(s, '\0') - 1; 557 558 while (s > target && isspace(s[0])) 559 --s; 560 s++; 561 prev = *s; 562 *s = '\0'; 563 564 ops->target.raw = strdup(target); 565 *s = prev; 566 567 if (ops->target.raw == NULL) 568 goto out_free_source; 569 570 if (comment == NULL) 571 return 0; 572 573 comment = skip_spaces(comment); 574 comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name); 575 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 576 577 return 0; 578 579 out_free_source: 580 zfree(&ops->source.raw); 581 return -1; 582 } 583 584 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 585 struct ins_operands *ops, int max_ins_name) 586 { 587 return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name, 588 ops->source.name ?: ops->source.raw, 589 ops->target.name ?: ops->target.raw); 590 } 591 592 static struct ins_ops mov_ops = { 593 .parse = mov__parse, 594 .scnprintf = mov__scnprintf, 595 }; 596 597 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 598 { 599 char *target, *comment, *s, prev; 600 601 target = s = ops->raw; 602 603 while (s[0] != '\0' && !isspace(s[0])) 604 ++s; 605 prev = *s; 606 *s = '\0'; 607 608 ops->target.raw = strdup(target); 609 *s = prev; 610 611 if (ops->target.raw == NULL) 612 return -1; 613 614 comment = strchr(s, arch->objdump.comment_char); 615 if (comment == NULL) 616 return 0; 617 618 comment = skip_spaces(comment); 619 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 620 621 return 0; 622 } 623 624 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 625 struct ins_operands *ops, int max_ins_name) 626 { 627 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, 628 ops->target.name ?: ops->target.raw); 629 } 630 631 static struct ins_ops dec_ops = { 632 .parse = dec__parse, 633 .scnprintf = dec__scnprintf, 634 }; 635 636 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 637 struct ins_operands *ops __maybe_unused, int max_ins_name) 638 { 639 return scnprintf(bf, size, "%-*s", max_ins_name, "nop"); 640 } 641 642 static struct ins_ops nop_ops = { 643 .scnprintf = nop__scnprintf, 644 }; 645 646 static struct ins_ops ret_ops = { 647 .scnprintf = ins__raw_scnprintf, 648 }; 649 650 bool ins__is_ret(const struct ins *ins) 651 { 652 return ins->ops == &ret_ops; 653 } 654 655 bool ins__is_lock(const struct ins *ins) 656 { 657 return ins->ops == &lock_ops; 658 } 659 660 static int ins__key_cmp(const void *name, const void *insp) 661 { 662 const struct ins *ins = insp; 663 664 return strcmp(name, ins->name); 665 } 666 667 static int ins__cmp(const void *a, const void *b) 668 { 669 const struct ins *ia = a; 670 const struct ins *ib = b; 671 672 return strcmp(ia->name, ib->name); 673 } 674 675 static void ins__sort(struct arch *arch) 676 { 677 const int nmemb = arch->nr_instructions; 678 679 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp); 680 } 681 682 static struct ins_ops *__ins__find(struct arch *arch, const char *name) 683 { 684 struct ins *ins; 685 const int nmemb = arch->nr_instructions; 686 687 if (!arch->sorted_instructions) { 688 ins__sort(arch); 689 arch->sorted_instructions = true; 690 } 691 692 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp); 693 return ins ? ins->ops : NULL; 694 } 695 696 static struct ins_ops *ins__find(struct arch *arch, const char *name) 697 { 698 struct ins_ops *ops = __ins__find(arch, name); 699 700 if (!ops && arch->associate_instruction_ops) 701 ops = arch->associate_instruction_ops(arch, name); 702 703 return ops; 704 } 705 706 static int arch__key_cmp(const void *name, const void *archp) 707 { 708 const struct arch *arch = archp; 709 710 return strcmp(name, arch->name); 711 } 712 713 static int arch__cmp(const void *a, const void *b) 714 { 715 const struct arch *aa = a; 716 const struct arch *ab = b; 717 718 return strcmp(aa->name, ab->name); 719 } 720 721 static void arch__sort(void) 722 { 723 const int nmemb = ARRAY_SIZE(architectures); 724 725 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); 726 } 727 728 static struct arch *arch__find(const char *name) 729 { 730 const int nmemb = ARRAY_SIZE(architectures); 731 static bool sorted; 732 733 if (!sorted) { 734 arch__sort(); 735 sorted = true; 736 } 737 738 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); 739 } 740 741 static struct annotated_source *annotated_source__new(void) 742 { 743 struct annotated_source *src = zalloc(sizeof(*src)); 744 745 if (src != NULL) 746 INIT_LIST_HEAD(&src->source); 747 748 return src; 749 } 750 751 static __maybe_unused void annotated_source__delete(struct annotated_source *src) 752 { 753 if (src == NULL) 754 return; 755 zfree(&src->histograms); 756 zfree(&src->cycles_hist); 757 free(src); 758 } 759 760 static int annotated_source__alloc_histograms(struct annotated_source *src, 761 size_t size, int nr_hists) 762 { 763 size_t sizeof_sym_hist; 764 765 /* 766 * Add buffer of one element for zero length symbol. 767 * When sample is taken from first instruction of 768 * zero length symbol, perf still resolves it and 769 * shows symbol name in perf report and allows to 770 * annotate it. 771 */ 772 if (size == 0) 773 size = 1; 774 775 /* Check for overflow when calculating sizeof_sym_hist */ 776 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) 777 return -1; 778 779 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); 780 781 /* Check for overflow in zalloc argument */ 782 if (sizeof_sym_hist > SIZE_MAX / nr_hists) 783 return -1; 784 785 src->sizeof_sym_hist = sizeof_sym_hist; 786 src->nr_histograms = nr_hists; 787 src->histograms = calloc(nr_hists, sizeof_sym_hist) ; 788 return src->histograms ? 0 : -1; 789 } 790 791 /* The cycles histogram is lazily allocated. */ 792 static int symbol__alloc_hist_cycles(struct symbol *sym) 793 { 794 struct annotation *notes = symbol__annotation(sym); 795 const size_t size = symbol__size(sym); 796 797 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 798 if (notes->src->cycles_hist == NULL) 799 return -1; 800 return 0; 801 } 802 803 void symbol__annotate_zero_histograms(struct symbol *sym) 804 { 805 struct annotation *notes = symbol__annotation(sym); 806 807 pthread_mutex_lock(¬es->lock); 808 if (notes->src != NULL) { 809 memset(notes->src->histograms, 0, 810 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 811 if (notes->src->cycles_hist) 812 memset(notes->src->cycles_hist, 0, 813 symbol__size(sym) * sizeof(struct cyc_hist)); 814 } 815 pthread_mutex_unlock(¬es->lock); 816 } 817 818 static int __symbol__account_cycles(struct cyc_hist *ch, 819 u64 start, 820 unsigned offset, unsigned cycles, 821 unsigned have_start) 822 { 823 /* 824 * For now we can only account one basic block per 825 * final jump. But multiple could be overlapping. 826 * Always account the longest one. So when 827 * a shorter one has been already seen throw it away. 828 * 829 * We separately always account the full cycles. 830 */ 831 ch[offset].num_aggr++; 832 ch[offset].cycles_aggr += cycles; 833 834 if (cycles > ch[offset].cycles_max) 835 ch[offset].cycles_max = cycles; 836 837 if (ch[offset].cycles_min) { 838 if (cycles && cycles < ch[offset].cycles_min) 839 ch[offset].cycles_min = cycles; 840 } else 841 ch[offset].cycles_min = cycles; 842 843 if (!have_start && ch[offset].have_start) 844 return 0; 845 if (ch[offset].num) { 846 if (have_start && (!ch[offset].have_start || 847 ch[offset].start > start)) { 848 ch[offset].have_start = 0; 849 ch[offset].cycles = 0; 850 ch[offset].num = 0; 851 if (ch[offset].reset < 0xffff) 852 ch[offset].reset++; 853 } else if (have_start && 854 ch[offset].start < start) 855 return 0; 856 } 857 858 if (ch[offset].num < NUM_SPARKS) 859 ch[offset].cycles_spark[ch[offset].num] = cycles; 860 861 ch[offset].have_start = have_start; 862 ch[offset].start = start; 863 ch[offset].cycles += cycles; 864 ch[offset].num++; 865 return 0; 866 } 867 868 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map, 869 struct annotated_source *src, int evidx, u64 addr, 870 struct perf_sample *sample) 871 { 872 unsigned offset; 873 struct sym_hist *h; 874 875 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 876 877 if ((addr < sym->start || addr >= sym->end) && 878 (addr != sym->end || sym->start != sym->end)) { 879 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 880 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 881 return -ERANGE; 882 } 883 884 offset = addr - sym->start; 885 h = annotated_source__histogram(src, evidx); 886 if (h == NULL) { 887 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n", 888 __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC); 889 return -ENOMEM; 890 } 891 h->nr_samples++; 892 h->addr[offset].nr_samples++; 893 h->period += sample->period; 894 h->addr[offset].period += sample->period; 895 896 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 897 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", 898 sym->start, sym->name, addr, addr - sym->start, evidx, 899 h->addr[offset].nr_samples, h->addr[offset].period); 900 return 0; 901 } 902 903 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym) 904 { 905 struct annotation *notes = symbol__annotation(sym); 906 907 if (notes->src == NULL) { 908 notes->src = annotated_source__new(); 909 if (notes->src == NULL) 910 return NULL; 911 goto alloc_cycles_hist; 912 } 913 914 if (!notes->src->cycles_hist) { 915 alloc_cycles_hist: 916 symbol__alloc_hist_cycles(sym); 917 } 918 919 return notes->src->cycles_hist; 920 } 921 922 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists) 923 { 924 struct annotation *notes = symbol__annotation(sym); 925 926 if (notes->src == NULL) { 927 notes->src = annotated_source__new(); 928 if (notes->src == NULL) 929 return NULL; 930 goto alloc_histograms; 931 } 932 933 if (notes->src->histograms == NULL) { 934 alloc_histograms: 935 annotated_source__alloc_histograms(notes->src, symbol__size(sym), 936 nr_hists); 937 } 938 939 return notes->src; 940 } 941 942 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map, 943 struct evsel *evsel, u64 addr, 944 struct perf_sample *sample) 945 { 946 struct annotated_source *src; 947 948 if (sym == NULL) 949 return 0; 950 src = symbol__hists(sym, evsel->evlist->core.nr_entries); 951 return (src) ? __symbol__inc_addr_samples(sym, map, src, evsel->idx, 952 addr, sample) : 0; 953 } 954 955 static int symbol__account_cycles(u64 addr, u64 start, 956 struct symbol *sym, unsigned cycles) 957 { 958 struct cyc_hist *cycles_hist; 959 unsigned offset; 960 961 if (sym == NULL) 962 return 0; 963 cycles_hist = symbol__cycles_hist(sym); 964 if (cycles_hist == NULL) 965 return -ENOMEM; 966 if (addr < sym->start || addr >= sym->end) 967 return -ERANGE; 968 969 if (start) { 970 if (start < sym->start || start >= sym->end) 971 return -ERANGE; 972 if (start >= addr) 973 start = 0; 974 } 975 offset = addr - sym->start; 976 return __symbol__account_cycles(cycles_hist, 977 start ? start - sym->start : 0, 978 offset, cycles, 979 !!start); 980 } 981 982 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 983 struct addr_map_symbol *start, 984 unsigned cycles) 985 { 986 u64 saddr = 0; 987 int err; 988 989 if (!cycles) 990 return 0; 991 992 /* 993 * Only set start when IPC can be computed. We can only 994 * compute it when the basic block is completely in a single 995 * function. 996 * Special case the case when the jump is elsewhere, but 997 * it starts on the function start. 998 */ 999 if (start && 1000 (start->sym == ams->sym || 1001 (ams->sym && 1002 start->addr == ams->sym->start + ams->map->start))) 1003 saddr = start->al_addr; 1004 if (saddr == 0) 1005 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 1006 ams->addr, 1007 start ? start->addr : 0, 1008 ams->sym ? ams->sym->start + ams->map->start : 0, 1009 saddr); 1010 err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles); 1011 if (err) 1012 pr_debug2("account_cycles failed %d\n", err); 1013 return err; 1014 } 1015 1016 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end) 1017 { 1018 unsigned n_insn = 0; 1019 u64 offset; 1020 1021 for (offset = start; offset <= end; offset++) { 1022 if (notes->offsets[offset]) 1023 n_insn++; 1024 } 1025 return n_insn; 1026 } 1027 1028 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch) 1029 { 1030 unsigned n_insn; 1031 unsigned int cover_insn = 0; 1032 u64 offset; 1033 1034 n_insn = annotation__count_insn(notes, start, end); 1035 if (n_insn && ch->num && ch->cycles) { 1036 float ipc = n_insn / ((double)ch->cycles / (double)ch->num); 1037 1038 /* Hide data when there are too many overlaps. */ 1039 if (ch->reset >= 0x7fff) 1040 return; 1041 1042 for (offset = start; offset <= end; offset++) { 1043 struct annotation_line *al = notes->offsets[offset]; 1044 1045 if (al && al->ipc == 0.0) { 1046 al->ipc = ipc; 1047 cover_insn++; 1048 } 1049 } 1050 1051 if (cover_insn) { 1052 notes->hit_cycles += ch->cycles; 1053 notes->hit_insn += n_insn * ch->num; 1054 notes->cover_insn += cover_insn; 1055 } 1056 } 1057 } 1058 1059 void annotation__compute_ipc(struct annotation *notes, size_t size) 1060 { 1061 s64 offset; 1062 1063 if (!notes->src || !notes->src->cycles_hist) 1064 return; 1065 1066 notes->total_insn = annotation__count_insn(notes, 0, size - 1); 1067 notes->hit_cycles = 0; 1068 notes->hit_insn = 0; 1069 notes->cover_insn = 0; 1070 1071 pthread_mutex_lock(¬es->lock); 1072 for (offset = size - 1; offset >= 0; --offset) { 1073 struct cyc_hist *ch; 1074 1075 ch = ¬es->src->cycles_hist[offset]; 1076 if (ch && ch->cycles) { 1077 struct annotation_line *al; 1078 1079 if (ch->have_start) 1080 annotation__count_and_fill(notes, ch->start, offset, ch); 1081 al = notes->offsets[offset]; 1082 if (al && ch->num_aggr) { 1083 al->cycles = ch->cycles_aggr / ch->num_aggr; 1084 al->cycles_max = ch->cycles_max; 1085 al->cycles_min = ch->cycles_min; 1086 } 1087 notes->have_cycles = true; 1088 } 1089 } 1090 pthread_mutex_unlock(¬es->lock); 1091 } 1092 1093 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 1094 struct evsel *evsel) 1095 { 1096 return symbol__inc_addr_samples(ams->sym, ams->map, evsel, ams->al_addr, sample); 1097 } 1098 1099 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 1100 struct evsel *evsel, u64 ip) 1101 { 1102 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evsel, ip, sample); 1103 } 1104 1105 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms) 1106 { 1107 dl->ins.ops = ins__find(arch, dl->ins.name); 1108 1109 if (!dl->ins.ops) 1110 return; 1111 1112 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0) 1113 dl->ins.ops = NULL; 1114 } 1115 1116 static int disasm_line__parse(char *line, const char **namep, char **rawp) 1117 { 1118 char tmp, *name = skip_spaces(line); 1119 1120 if (name[0] == '\0') 1121 return -1; 1122 1123 *rawp = name + 1; 1124 1125 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 1126 ++*rawp; 1127 1128 tmp = (*rawp)[0]; 1129 (*rawp)[0] = '\0'; 1130 *namep = strdup(name); 1131 1132 if (*namep == NULL) 1133 goto out; 1134 1135 (*rawp)[0] = tmp; 1136 *rawp = strim(*rawp); 1137 1138 return 0; 1139 1140 out: 1141 return -1; 1142 } 1143 1144 struct annotate_args { 1145 size_t privsize; 1146 struct arch *arch; 1147 struct map_symbol ms; 1148 struct evsel *evsel; 1149 struct annotation_options *options; 1150 s64 offset; 1151 char *line; 1152 int line_nr; 1153 }; 1154 1155 static void annotation_line__delete(struct annotation_line *al) 1156 { 1157 void *ptr = (void *) al - al->privsize; 1158 1159 free_srcline(al->path); 1160 zfree(&al->line); 1161 free(ptr); 1162 } 1163 1164 /* 1165 * Allocating the annotation line data with following 1166 * structure: 1167 * 1168 * -------------------------------------- 1169 * private space | struct annotation_line 1170 * -------------------------------------- 1171 * 1172 * Size of the private space is stored in 'struct annotation_line'. 1173 * 1174 */ 1175 static struct annotation_line * 1176 annotation_line__new(struct annotate_args *args, size_t privsize) 1177 { 1178 struct annotation_line *al; 1179 struct evsel *evsel = args->evsel; 1180 size_t size = privsize + sizeof(*al); 1181 int nr = 1; 1182 1183 if (perf_evsel__is_group_event(evsel)) 1184 nr = evsel->core.nr_members; 1185 1186 size += sizeof(al->data[0]) * nr; 1187 1188 al = zalloc(size); 1189 if (al) { 1190 al = (void *) al + privsize; 1191 al->privsize = privsize; 1192 al->offset = args->offset; 1193 al->line = strdup(args->line); 1194 al->line_nr = args->line_nr; 1195 al->data_nr = nr; 1196 } 1197 1198 return al; 1199 } 1200 1201 /* 1202 * Allocating the disasm annotation line data with 1203 * following structure: 1204 * 1205 * ------------------------------------------------------------ 1206 * privsize space | struct disasm_line | struct annotation_line 1207 * ------------------------------------------------------------ 1208 * 1209 * We have 'struct annotation_line' member as last member 1210 * of 'struct disasm_line' to have an easy access. 1211 * 1212 */ 1213 static struct disasm_line *disasm_line__new(struct annotate_args *args) 1214 { 1215 struct disasm_line *dl = NULL; 1216 struct annotation_line *al; 1217 size_t privsize = args->privsize + offsetof(struct disasm_line, al); 1218 1219 al = annotation_line__new(args, privsize); 1220 if (al != NULL) { 1221 dl = disasm_line(al); 1222 1223 if (dl->al.line == NULL) 1224 goto out_delete; 1225 1226 if (args->offset != -1) { 1227 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0) 1228 goto out_free_line; 1229 1230 disasm_line__init_ins(dl, args->arch, &args->ms); 1231 } 1232 } 1233 1234 return dl; 1235 1236 out_free_line: 1237 zfree(&dl->al.line); 1238 out_delete: 1239 free(dl); 1240 return NULL; 1241 } 1242 1243 void disasm_line__free(struct disasm_line *dl) 1244 { 1245 if (dl->ins.ops && dl->ins.ops->free) 1246 dl->ins.ops->free(&dl->ops); 1247 else 1248 ins__delete(&dl->ops); 1249 zfree(&dl->ins.name); 1250 annotation_line__delete(&dl->al); 1251 } 1252 1253 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name) 1254 { 1255 if (raw || !dl->ins.ops) 1256 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw); 1257 1258 return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name); 1259 } 1260 1261 static void annotation_line__add(struct annotation_line *al, struct list_head *head) 1262 { 1263 list_add_tail(&al->node, head); 1264 } 1265 1266 struct annotation_line * 1267 annotation_line__next(struct annotation_line *pos, struct list_head *head) 1268 { 1269 list_for_each_entry_continue(pos, head, node) 1270 if (pos->offset >= 0) 1271 return pos; 1272 1273 return NULL; 1274 } 1275 1276 static const char *annotate__address_color(struct block_range *br) 1277 { 1278 double cov = block_range__coverage(br); 1279 1280 if (cov >= 0) { 1281 /* mark red for >75% coverage */ 1282 if (cov > 0.75) 1283 return PERF_COLOR_RED; 1284 1285 /* mark dull for <1% coverage */ 1286 if (cov < 0.01) 1287 return PERF_COLOR_NORMAL; 1288 } 1289 1290 return PERF_COLOR_MAGENTA; 1291 } 1292 1293 static const char *annotate__asm_color(struct block_range *br) 1294 { 1295 double cov = block_range__coverage(br); 1296 1297 if (cov >= 0) { 1298 /* mark dull for <1% coverage */ 1299 if (cov < 0.01) 1300 return PERF_COLOR_NORMAL; 1301 } 1302 1303 return PERF_COLOR_BLUE; 1304 } 1305 1306 static void annotate__branch_printf(struct block_range *br, u64 addr) 1307 { 1308 bool emit_comment = true; 1309 1310 if (!br) 1311 return; 1312 1313 #if 1 1314 if (br->is_target && br->start == addr) { 1315 struct block_range *branch = br; 1316 double p; 1317 1318 /* 1319 * Find matching branch to our target. 1320 */ 1321 while (!branch->is_branch) 1322 branch = block_range__next(branch); 1323 1324 p = 100 *(double)br->entry / branch->coverage; 1325 1326 if (p > 0.1) { 1327 if (emit_comment) { 1328 emit_comment = false; 1329 printf("\t#"); 1330 } 1331 1332 /* 1333 * The percentage of coverage joined at this target in relation 1334 * to the next branch. 1335 */ 1336 printf(" +%.2f%%", p); 1337 } 1338 } 1339 #endif 1340 if (br->is_branch && br->end == addr) { 1341 double p = 100*(double)br->taken / br->coverage; 1342 1343 if (p > 0.1) { 1344 if (emit_comment) { 1345 emit_comment = false; 1346 printf("\t#"); 1347 } 1348 1349 /* 1350 * The percentage of coverage leaving at this branch, and 1351 * its prediction ratio. 1352 */ 1353 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 1354 } 1355 } 1356 } 1357 1358 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width) 1359 { 1360 s64 offset = dl->al.offset; 1361 const u64 addr = start + offset; 1362 struct block_range *br; 1363 1364 br = block_range__find(addr); 1365 color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr); 1366 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line); 1367 annotate__branch_printf(br, addr); 1368 return 0; 1369 } 1370 1371 static int 1372 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, 1373 struct evsel *evsel, u64 len, int min_pcnt, int printed, 1374 int max_lines, struct annotation_line *queue, int addr_fmt_width, 1375 int percent_type) 1376 { 1377 struct disasm_line *dl = container_of(al, struct disasm_line, al); 1378 static const char *prev_line; 1379 static const char *prev_color; 1380 1381 if (al->offset != -1) { 1382 double max_percent = 0.0; 1383 int i, nr_percent = 1; 1384 const char *color; 1385 struct annotation *notes = symbol__annotation(sym); 1386 1387 for (i = 0; i < al->data_nr; i++) { 1388 double percent; 1389 1390 percent = annotation_data__percent(&al->data[i], 1391 percent_type); 1392 1393 if (percent > max_percent) 1394 max_percent = percent; 1395 } 1396 1397 if (al->data_nr > nr_percent) 1398 nr_percent = al->data_nr; 1399 1400 if (max_percent < min_pcnt) 1401 return -1; 1402 1403 if (max_lines && printed >= max_lines) 1404 return 1; 1405 1406 if (queue != NULL) { 1407 list_for_each_entry_from(queue, ¬es->src->source, node) { 1408 if (queue == al) 1409 break; 1410 annotation_line__print(queue, sym, start, evsel, len, 1411 0, 0, 1, NULL, addr_fmt_width, 1412 percent_type); 1413 } 1414 } 1415 1416 color = get_percent_color(max_percent); 1417 1418 /* 1419 * Also color the filename and line if needed, with 1420 * the same color than the percentage. Don't print it 1421 * twice for close colored addr with the same filename:line 1422 */ 1423 if (al->path) { 1424 if (!prev_line || strcmp(prev_line, al->path) 1425 || color != prev_color) { 1426 color_fprintf(stdout, color, " %s", al->path); 1427 prev_line = al->path; 1428 prev_color = color; 1429 } 1430 } 1431 1432 for (i = 0; i < nr_percent; i++) { 1433 struct annotation_data *data = &al->data[i]; 1434 double percent; 1435 1436 percent = annotation_data__percent(data, percent_type); 1437 color = get_percent_color(percent); 1438 1439 if (symbol_conf.show_total_period) 1440 color_fprintf(stdout, color, " %11" PRIu64, 1441 data->he.period); 1442 else if (symbol_conf.show_nr_samples) 1443 color_fprintf(stdout, color, " %7" PRIu64, 1444 data->he.nr_samples); 1445 else 1446 color_fprintf(stdout, color, " %7.2f", percent); 1447 } 1448 1449 printf(" : "); 1450 1451 disasm_line__print(dl, start, addr_fmt_width); 1452 printf("\n"); 1453 } else if (max_lines && printed >= max_lines) 1454 return 1; 1455 else { 1456 int width = symbol_conf.show_total_period ? 12 : 8; 1457 1458 if (queue) 1459 return -1; 1460 1461 if (perf_evsel__is_group_event(evsel)) 1462 width *= evsel->core.nr_members; 1463 1464 if (!*al->line) 1465 printf(" %*s:\n", width, " "); 1466 else 1467 printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->line); 1468 } 1469 1470 return 0; 1471 } 1472 1473 /* 1474 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1475 * which looks like following 1476 * 1477 * 0000000000415500 <_init>: 1478 * 415500: sub $0x8,%rsp 1479 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1480 * 41550b: test %rax,%rax 1481 * 41550e: je 415515 <_init+0x15> 1482 * 415510: callq 416e70 <__gmon_start__@plt> 1483 * 415515: add $0x8,%rsp 1484 * 415519: retq 1485 * 1486 * it will be parsed and saved into struct disasm_line as 1487 * <offset> <name> <ops.raw> 1488 * 1489 * The offset will be a relative offset from the start of the symbol and -1 1490 * means that it's not a disassembly line so should be treated differently. 1491 * The ops.raw part will be parsed further according to type of the instruction. 1492 */ 1493 static int symbol__parse_objdump_line(struct symbol *sym, 1494 struct annotate_args *args, 1495 char *parsed_line, int *line_nr) 1496 { 1497 struct map *map = args->ms.map; 1498 struct annotation *notes = symbol__annotation(sym); 1499 struct disasm_line *dl; 1500 char *tmp; 1501 s64 line_ip, offset = -1; 1502 regmatch_t match[2]; 1503 1504 /* /filename:linenr ? Save line number and ignore. */ 1505 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { 1506 *line_nr = atoi(parsed_line + match[1].rm_so); 1507 return 0; 1508 } 1509 1510 /* Process hex address followed by ':'. */ 1511 line_ip = strtoull(parsed_line, &tmp, 16); 1512 if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') { 1513 u64 start = map__rip_2objdump(map, sym->start), 1514 end = map__rip_2objdump(map, sym->end); 1515 1516 offset = line_ip - start; 1517 if ((u64)line_ip < start || (u64)line_ip >= end) 1518 offset = -1; 1519 else 1520 parsed_line = tmp + 1; 1521 } 1522 1523 args->offset = offset; 1524 args->line = parsed_line; 1525 args->line_nr = *line_nr; 1526 args->ms.sym = sym; 1527 1528 dl = disasm_line__new(args); 1529 (*line_nr)++; 1530 1531 if (dl == NULL) 1532 return -1; 1533 1534 if (!disasm_line__has_local_offset(dl)) { 1535 dl->ops.target.offset = dl->ops.target.addr - 1536 map__rip_2objdump(map, sym->start); 1537 dl->ops.target.offset_avail = true; 1538 } 1539 1540 /* kcore has no symbols, so add the call target symbol */ 1541 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) { 1542 struct addr_map_symbol target = { 1543 .map = map, 1544 .addr = dl->ops.target.addr, 1545 }; 1546 1547 if (!map_groups__find_ams(map->groups, &target) && 1548 target.sym->start == target.al_addr) 1549 dl->ops.target.sym = target.sym; 1550 } 1551 1552 annotation_line__add(&dl->al, ¬es->src->source); 1553 1554 return 0; 1555 } 1556 1557 static __attribute__((constructor)) void symbol__init_regexpr(void) 1558 { 1559 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1560 } 1561 1562 static void delete_last_nop(struct symbol *sym) 1563 { 1564 struct annotation *notes = symbol__annotation(sym); 1565 struct list_head *list = ¬es->src->source; 1566 struct disasm_line *dl; 1567 1568 while (!list_empty(list)) { 1569 dl = list_entry(list->prev, struct disasm_line, al.node); 1570 1571 if (dl->ins.ops) { 1572 if (dl->ins.ops != &nop_ops) 1573 return; 1574 } else { 1575 if (!strstr(dl->al.line, " nop ") && 1576 !strstr(dl->al.line, " nopl ") && 1577 !strstr(dl->al.line, " nopw ")) 1578 return; 1579 } 1580 1581 list_del_init(&dl->al.node); 1582 disasm_line__free(dl); 1583 } 1584 } 1585 1586 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map, 1587 int errnum, char *buf, size_t buflen) 1588 { 1589 struct dso *dso = map->dso; 1590 1591 BUG_ON(buflen == 0); 1592 1593 if (errnum >= 0) { 1594 str_error_r(errnum, buf, buflen); 1595 return 0; 1596 } 1597 1598 switch (errnum) { 1599 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1600 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1601 char *build_id_msg = NULL; 1602 1603 if (dso->has_build_id) { 1604 build_id__sprintf(dso->build_id, 1605 sizeof(dso->build_id), bf + 15); 1606 build_id_msg = bf; 1607 } 1608 scnprintf(buf, buflen, 1609 "No vmlinux file%s\nwas found in the path.\n\n" 1610 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1611 "Please use:\n\n" 1612 " perf buildid-cache -vu vmlinux\n\n" 1613 "or:\n\n" 1614 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1615 } 1616 break; 1617 case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF: 1618 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation"); 1619 break; 1620 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP: 1621 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions."); 1622 break; 1623 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING: 1624 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization."); 1625 break; 1626 case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE: 1627 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name); 1628 break; 1629 case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF: 1630 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.", 1631 dso->long_name); 1632 break; 1633 default: 1634 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1635 break; 1636 } 1637 1638 return 0; 1639 } 1640 1641 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1642 { 1643 char linkname[PATH_MAX]; 1644 char *build_id_filename; 1645 char *build_id_path = NULL; 1646 char *pos; 1647 1648 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1649 !dso__is_kcore(dso)) 1650 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1651 1652 build_id_filename = dso__build_id_filename(dso, NULL, 0, false); 1653 if (build_id_filename) { 1654 __symbol__join_symfs(filename, filename_size, build_id_filename); 1655 free(build_id_filename); 1656 } else { 1657 if (dso->has_build_id) 1658 return ENOMEM; 1659 goto fallback; 1660 } 1661 1662 build_id_path = strdup(filename); 1663 if (!build_id_path) 1664 return ENOMEM; 1665 1666 /* 1667 * old style build-id cache has name of XX/XXXXXXX.. while 1668 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}. 1669 * extract the build-id part of dirname in the new style only. 1670 */ 1671 pos = strrchr(build_id_path, '/'); 1672 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2) 1673 dirname(build_id_path); 1674 1675 if (dso__is_kcore(dso) || 1676 readlink(build_id_path, linkname, sizeof(linkname)) < 0 || 1677 strstr(linkname, DSO__NAME_KALLSYMS) || 1678 access(filename, R_OK)) { 1679 fallback: 1680 /* 1681 * If we don't have build-ids or the build-id file isn't in the 1682 * cache, or is just a kallsyms file, well, lets hope that this 1683 * DSO is the same as when 'perf record' ran. 1684 */ 1685 __symbol__join_symfs(filename, filename_size, dso->long_name); 1686 } 1687 1688 free(build_id_path); 1689 return 0; 1690 } 1691 1692 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1693 #define PACKAGE "perf" 1694 #include <bfd.h> 1695 #include <dis-asm.h> 1696 1697 static int symbol__disassemble_bpf(struct symbol *sym, 1698 struct annotate_args *args) 1699 { 1700 struct annotation *notes = symbol__annotation(sym); 1701 struct annotation_options *opts = args->options; 1702 struct bpf_prog_info_linear *info_linear; 1703 struct bpf_prog_linfo *prog_linfo = NULL; 1704 struct bpf_prog_info_node *info_node; 1705 int len = sym->end - sym->start; 1706 disassembler_ftype disassemble; 1707 struct map *map = args->ms.map; 1708 struct disassemble_info info; 1709 struct dso *dso = map->dso; 1710 int pc = 0, count, sub_id; 1711 struct btf *btf = NULL; 1712 char tpath[PATH_MAX]; 1713 size_t buf_size; 1714 int nr_skip = 0; 1715 char *buf; 1716 bfd *bfdf; 1717 int ret; 1718 FILE *s; 1719 1720 if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO) 1721 return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE; 1722 1723 pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__, 1724 sym->name, sym->start, sym->end - sym->start); 1725 1726 memset(tpath, 0, sizeof(tpath)); 1727 perf_exe(tpath, sizeof(tpath)); 1728 1729 bfdf = bfd_openr(tpath, NULL); 1730 assert(bfdf); 1731 assert(bfd_check_format(bfdf, bfd_object)); 1732 1733 s = open_memstream(&buf, &buf_size); 1734 if (!s) { 1735 ret = errno; 1736 goto out; 1737 } 1738 init_disassemble_info(&info, s, 1739 (fprintf_ftype) fprintf); 1740 1741 info.arch = bfd_get_arch(bfdf); 1742 info.mach = bfd_get_mach(bfdf); 1743 1744 info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env, 1745 dso->bpf_prog.id); 1746 if (!info_node) { 1747 ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF; 1748 goto out; 1749 } 1750 info_linear = info_node->info_linear; 1751 sub_id = dso->bpf_prog.sub_id; 1752 1753 info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns); 1754 info.buffer_length = info_linear->info.jited_prog_len; 1755 1756 if (info_linear->info.nr_line_info) 1757 prog_linfo = bpf_prog_linfo__new(&info_linear->info); 1758 1759 if (info_linear->info.btf_id) { 1760 struct btf_node *node; 1761 1762 node = perf_env__find_btf(dso->bpf_prog.env, 1763 info_linear->info.btf_id); 1764 if (node) 1765 btf = btf__new((__u8 *)(node->data), 1766 node->data_size); 1767 } 1768 1769 disassemble_init_for_target(&info); 1770 1771 #ifdef DISASM_FOUR_ARGS_SIGNATURE 1772 disassemble = disassembler(info.arch, 1773 bfd_big_endian(bfdf), 1774 info.mach, 1775 bfdf); 1776 #else 1777 disassemble = disassembler(bfdf); 1778 #endif 1779 assert(disassemble); 1780 1781 fflush(s); 1782 do { 1783 const struct bpf_line_info *linfo = NULL; 1784 struct disasm_line *dl; 1785 size_t prev_buf_size; 1786 const char *srcline; 1787 u64 addr; 1788 1789 addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id]; 1790 count = disassemble(pc, &info); 1791 1792 if (prog_linfo) 1793 linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo, 1794 addr, sub_id, 1795 nr_skip); 1796 1797 if (linfo && btf) { 1798 srcline = btf__name_by_offset(btf, linfo->line_off); 1799 nr_skip++; 1800 } else 1801 srcline = NULL; 1802 1803 fprintf(s, "\n"); 1804 prev_buf_size = buf_size; 1805 fflush(s); 1806 1807 if (!opts->hide_src_code && srcline) { 1808 args->offset = -1; 1809 args->line = strdup(srcline); 1810 args->line_nr = 0; 1811 args->ms.sym = sym; 1812 dl = disasm_line__new(args); 1813 if (dl) { 1814 annotation_line__add(&dl->al, 1815 ¬es->src->source); 1816 } 1817 } 1818 1819 args->offset = pc; 1820 args->line = buf + prev_buf_size; 1821 args->line_nr = 0; 1822 args->ms.sym = sym; 1823 dl = disasm_line__new(args); 1824 if (dl) 1825 annotation_line__add(&dl->al, ¬es->src->source); 1826 1827 pc += count; 1828 } while (count > 0 && pc < len); 1829 1830 ret = 0; 1831 out: 1832 free(prog_linfo); 1833 free(btf); 1834 fclose(s); 1835 bfd_close(bfdf); 1836 return ret; 1837 } 1838 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1839 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused, 1840 struct annotate_args *args __maybe_unused) 1841 { 1842 return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF; 1843 } 1844 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1845 1846 /* 1847 * Possibly create a new version of line with tabs expanded. Returns the 1848 * existing or new line, storage is updated if a new line is allocated. If 1849 * allocation fails then NULL is returned. 1850 */ 1851 static char *expand_tabs(char *line, char **storage, size_t *storage_len) 1852 { 1853 size_t i, src, dst, len, new_storage_len, num_tabs; 1854 char *new_line; 1855 size_t line_len = strlen(line); 1856 1857 for (num_tabs = 0, i = 0; i < line_len; i++) 1858 if (line[i] == '\t') 1859 num_tabs++; 1860 1861 if (num_tabs == 0) 1862 return line; 1863 1864 /* 1865 * Space for the line and '\0', less the leading and trailing 1866 * spaces. Each tab may introduce 7 additional spaces. 1867 */ 1868 new_storage_len = line_len + 1 + (num_tabs * 7); 1869 1870 new_line = malloc(new_storage_len); 1871 if (new_line == NULL) { 1872 pr_err("Failure allocating memory for tab expansion\n"); 1873 return NULL; 1874 } 1875 1876 /* 1877 * Copy regions starting at src and expand tabs. If there are two 1878 * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces 1879 * are inserted. 1880 */ 1881 for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) { 1882 if (line[i] == '\t') { 1883 len = i - src; 1884 memcpy(&new_line[dst], &line[src], len); 1885 dst += len; 1886 new_line[dst++] = ' '; 1887 while (dst % 8 != 0) 1888 new_line[dst++] = ' '; 1889 src = i + 1; 1890 num_tabs--; 1891 } 1892 } 1893 1894 /* Expand the last region. */ 1895 len = line_len - src; 1896 memcpy(&new_line[dst], &line[src], len); 1897 dst += len; 1898 new_line[dst] = '\0'; 1899 1900 free(*storage); 1901 *storage = new_line; 1902 *storage_len = new_storage_len; 1903 return new_line; 1904 1905 } 1906 1907 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args) 1908 { 1909 struct annotation_options *opts = args->options; 1910 struct map *map = args->ms.map; 1911 struct dso *dso = map->dso; 1912 char *command; 1913 FILE *file; 1914 char symfs_filename[PATH_MAX]; 1915 struct kcore_extract kce; 1916 bool delete_extract = false; 1917 bool decomp = false; 1918 int lineno = 0; 1919 int nline; 1920 char *line; 1921 size_t line_len; 1922 const char *objdump_argv[] = { 1923 "/bin/sh", 1924 "-c", 1925 NULL, /* Will be the objdump command to run. */ 1926 "--", 1927 NULL, /* Will be the symfs path. */ 1928 NULL, 1929 }; 1930 struct child_process objdump_process; 1931 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1932 1933 if (err) 1934 return err; 1935 1936 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1937 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1938 map->unmap_ip(map, sym->end)); 1939 1940 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1941 dso, dso->long_name, sym, sym->name); 1942 1943 if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) { 1944 return symbol__disassemble_bpf(sym, args); 1945 } else if (dso__is_kcore(dso)) { 1946 kce.kcore_filename = symfs_filename; 1947 kce.addr = map__rip_2objdump(map, sym->start); 1948 kce.offs = sym->start; 1949 kce.len = sym->end - sym->start; 1950 if (!kcore_extract__create(&kce)) { 1951 delete_extract = true; 1952 strlcpy(symfs_filename, kce.extract_filename, 1953 sizeof(symfs_filename)); 1954 } 1955 } else if (dso__needs_decompress(dso)) { 1956 char tmp[KMOD_DECOMP_LEN]; 1957 1958 if (dso__decompress_kmodule_path(dso, symfs_filename, 1959 tmp, sizeof(tmp)) < 0) 1960 return -1; 1961 1962 decomp = true; 1963 strcpy(symfs_filename, tmp); 1964 } 1965 1966 err = asprintf(&command, 1967 "%s %s%s --start-address=0x%016" PRIx64 1968 " --stop-address=0x%016" PRIx64 1969 " -l -d %s %s -C \"$1\"", 1970 opts->objdump_path ?: "objdump", 1971 opts->disassembler_style ? "-M " : "", 1972 opts->disassembler_style ?: "", 1973 map__rip_2objdump(map, sym->start), 1974 map__rip_2objdump(map, sym->end), 1975 opts->show_asm_raw ? "" : "--no-show-raw-insn", 1976 opts->annotate_src ? "-S" : ""); 1977 1978 if (err < 0) { 1979 pr_err("Failure allocating memory for the command to run\n"); 1980 goto out_remove_tmp; 1981 } 1982 1983 pr_debug("Executing: %s\n", command); 1984 1985 objdump_argv[2] = command; 1986 objdump_argv[4] = symfs_filename; 1987 1988 /* Create a pipe to read from for stdout */ 1989 memset(&objdump_process, 0, sizeof(objdump_process)); 1990 objdump_process.argv = objdump_argv; 1991 objdump_process.out = -1; 1992 if (start_command(&objdump_process)) { 1993 pr_err("Failure starting to run %s\n", command); 1994 err = -1; 1995 goto out_free_command; 1996 } 1997 1998 file = fdopen(objdump_process.out, "r"); 1999 if (!file) { 2000 pr_err("Failure creating FILE stream for %s\n", command); 2001 /* 2002 * If we were using debug info should retry with 2003 * original binary. 2004 */ 2005 err = -1; 2006 goto out_close_stdout; 2007 } 2008 2009 /* Storage for getline. */ 2010 line = NULL; 2011 line_len = 0; 2012 2013 nline = 0; 2014 while (!feof(file)) { 2015 const char *match; 2016 char *expanded_line; 2017 2018 if (getline(&line, &line_len, file) < 0 || !line) 2019 break; 2020 2021 /* Skip lines containing "filename:" */ 2022 match = strstr(line, symfs_filename); 2023 if (match && match[strlen(symfs_filename)] == ':') 2024 continue; 2025 2026 expanded_line = strim(line); 2027 expanded_line = expand_tabs(expanded_line, &line, &line_len); 2028 if (!expanded_line) 2029 break; 2030 2031 /* 2032 * The source code line number (lineno) needs to be kept in 2033 * across calls to symbol__parse_objdump_line(), so that it 2034 * can associate it with the instructions till the next one. 2035 * See disasm_line__new() and struct disasm_line::line_nr. 2036 */ 2037 if (symbol__parse_objdump_line(sym, args, expanded_line, 2038 &lineno) < 0) 2039 break; 2040 nline++; 2041 } 2042 free(line); 2043 2044 err = finish_command(&objdump_process); 2045 if (err) 2046 pr_err("Error running %s\n", command); 2047 2048 if (nline == 0) { 2049 err = -1; 2050 pr_err("No output from %s\n", command); 2051 } 2052 2053 /* 2054 * kallsyms does not have symbol sizes so there may a nop at the end. 2055 * Remove it. 2056 */ 2057 if (dso__is_kcore(dso)) 2058 delete_last_nop(sym); 2059 2060 fclose(file); 2061 2062 out_close_stdout: 2063 close(objdump_process.out); 2064 2065 out_free_command: 2066 free(command); 2067 2068 out_remove_tmp: 2069 if (decomp) 2070 unlink(symfs_filename); 2071 2072 if (delete_extract) 2073 kcore_extract__delete(&kce); 2074 2075 return err; 2076 } 2077 2078 static void calc_percent(struct sym_hist *sym_hist, 2079 struct hists *hists, 2080 struct annotation_data *data, 2081 s64 offset, s64 end) 2082 { 2083 unsigned int hits = 0; 2084 u64 period = 0; 2085 2086 while (offset < end) { 2087 hits += sym_hist->addr[offset].nr_samples; 2088 period += sym_hist->addr[offset].period; 2089 ++offset; 2090 } 2091 2092 if (sym_hist->nr_samples) { 2093 data->he.period = period; 2094 data->he.nr_samples = hits; 2095 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples; 2096 } 2097 2098 if (hists->stats.nr_non_filtered_samples) 2099 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples; 2100 2101 if (sym_hist->period) 2102 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period; 2103 2104 if (hists->stats.total_period) 2105 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period; 2106 } 2107 2108 static void annotation__calc_percent(struct annotation *notes, 2109 struct evsel *leader, s64 len) 2110 { 2111 struct annotation_line *al, *next; 2112 struct evsel *evsel; 2113 2114 list_for_each_entry(al, ¬es->src->source, node) { 2115 s64 end; 2116 int i = 0; 2117 2118 if (al->offset == -1) 2119 continue; 2120 2121 next = annotation_line__next(al, ¬es->src->source); 2122 end = next ? next->offset : len; 2123 2124 for_each_group_evsel(evsel, leader) { 2125 struct hists *hists = evsel__hists(evsel); 2126 struct annotation_data *data; 2127 struct sym_hist *sym_hist; 2128 2129 BUG_ON(i >= al->data_nr); 2130 2131 sym_hist = annotation__histogram(notes, evsel->idx); 2132 data = &al->data[i++]; 2133 2134 calc_percent(sym_hist, hists, data, al->offset, end); 2135 } 2136 } 2137 } 2138 2139 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel) 2140 { 2141 struct annotation *notes = symbol__annotation(sym); 2142 2143 annotation__calc_percent(notes, evsel, symbol__size(sym)); 2144 } 2145 2146 int symbol__annotate(struct symbol *sym, struct map *map, 2147 struct evsel *evsel, size_t privsize, 2148 struct annotation_options *options, 2149 struct arch **parch) 2150 { 2151 struct annotation *notes = symbol__annotation(sym); 2152 struct annotate_args args = { 2153 .privsize = privsize, 2154 .evsel = evsel, 2155 .options = options, 2156 }; 2157 struct perf_env *env = perf_evsel__env(evsel); 2158 const char *arch_name = perf_env__arch(env); 2159 struct arch *arch; 2160 int err; 2161 2162 if (!arch_name) 2163 return errno; 2164 2165 args.arch = arch = arch__find(arch_name); 2166 if (arch == NULL) 2167 return ENOTSUP; 2168 2169 if (parch) 2170 *parch = arch; 2171 2172 if (arch->init) { 2173 err = arch->init(arch, env ? env->cpuid : NULL); 2174 if (err) { 2175 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); 2176 return err; 2177 } 2178 } 2179 2180 args.ms.map = map; 2181 args.ms.sym = sym; 2182 notes->start = map__rip_2objdump(map, sym->start); 2183 2184 return symbol__disassemble(sym, &args); 2185 } 2186 2187 static void insert_source_line(struct rb_root *root, struct annotation_line *al, 2188 struct annotation_options *opts) 2189 { 2190 struct annotation_line *iter; 2191 struct rb_node **p = &root->rb_node; 2192 struct rb_node *parent = NULL; 2193 int i, ret; 2194 2195 while (*p != NULL) { 2196 parent = *p; 2197 iter = rb_entry(parent, struct annotation_line, rb_node); 2198 2199 ret = strcmp(iter->path, al->path); 2200 if (ret == 0) { 2201 for (i = 0; i < al->data_nr; i++) { 2202 iter->data[i].percent_sum += annotation_data__percent(&al->data[i], 2203 opts->percent_type); 2204 } 2205 return; 2206 } 2207 2208 if (ret < 0) 2209 p = &(*p)->rb_left; 2210 else 2211 p = &(*p)->rb_right; 2212 } 2213 2214 for (i = 0; i < al->data_nr; i++) { 2215 al->data[i].percent_sum = annotation_data__percent(&al->data[i], 2216 opts->percent_type); 2217 } 2218 2219 rb_link_node(&al->rb_node, parent, p); 2220 rb_insert_color(&al->rb_node, root); 2221 } 2222 2223 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b) 2224 { 2225 int i; 2226 2227 for (i = 0; i < a->data_nr; i++) { 2228 if (a->data[i].percent_sum == b->data[i].percent_sum) 2229 continue; 2230 return a->data[i].percent_sum > b->data[i].percent_sum; 2231 } 2232 2233 return 0; 2234 } 2235 2236 static void __resort_source_line(struct rb_root *root, struct annotation_line *al) 2237 { 2238 struct annotation_line *iter; 2239 struct rb_node **p = &root->rb_node; 2240 struct rb_node *parent = NULL; 2241 2242 while (*p != NULL) { 2243 parent = *p; 2244 iter = rb_entry(parent, struct annotation_line, rb_node); 2245 2246 if (cmp_source_line(al, iter)) 2247 p = &(*p)->rb_left; 2248 else 2249 p = &(*p)->rb_right; 2250 } 2251 2252 rb_link_node(&al->rb_node, parent, p); 2253 rb_insert_color(&al->rb_node, root); 2254 } 2255 2256 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 2257 { 2258 struct annotation_line *al; 2259 struct rb_node *node; 2260 2261 node = rb_first(src_root); 2262 while (node) { 2263 struct rb_node *next; 2264 2265 al = rb_entry(node, struct annotation_line, rb_node); 2266 next = rb_next(node); 2267 rb_erase(node, src_root); 2268 2269 __resort_source_line(dest_root, al); 2270 node = next; 2271 } 2272 } 2273 2274 static void print_summary(struct rb_root *root, const char *filename) 2275 { 2276 struct annotation_line *al; 2277 struct rb_node *node; 2278 2279 printf("\nSorted summary for file %s\n", filename); 2280 printf("----------------------------------------------\n\n"); 2281 2282 if (RB_EMPTY_ROOT(root)) { 2283 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 2284 return; 2285 } 2286 2287 node = rb_first(root); 2288 while (node) { 2289 double percent, percent_max = 0.0; 2290 const char *color; 2291 char *path; 2292 int i; 2293 2294 al = rb_entry(node, struct annotation_line, rb_node); 2295 for (i = 0; i < al->data_nr; i++) { 2296 percent = al->data[i].percent_sum; 2297 color = get_percent_color(percent); 2298 color_fprintf(stdout, color, " %7.2f", percent); 2299 2300 if (percent > percent_max) 2301 percent_max = percent; 2302 } 2303 2304 path = al->path; 2305 color = get_percent_color(percent_max); 2306 color_fprintf(stdout, color, " %s\n", path); 2307 2308 node = rb_next(node); 2309 } 2310 } 2311 2312 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel) 2313 { 2314 struct annotation *notes = symbol__annotation(sym); 2315 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 2316 u64 len = symbol__size(sym), offset; 2317 2318 for (offset = 0; offset < len; ++offset) 2319 if (h->addr[offset].nr_samples != 0) 2320 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 2321 sym->start + offset, h->addr[offset].nr_samples); 2322 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); 2323 } 2324 2325 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start) 2326 { 2327 char bf[32]; 2328 struct annotation_line *line; 2329 2330 list_for_each_entry_reverse(line, lines, node) { 2331 if (line->offset != -1) 2332 return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset); 2333 } 2334 2335 return 0; 2336 } 2337 2338 int symbol__annotate_printf(struct symbol *sym, struct map *map, 2339 struct evsel *evsel, 2340 struct annotation_options *opts) 2341 { 2342 struct dso *dso = map->dso; 2343 char *filename; 2344 const char *d_filename; 2345 const char *evsel_name = perf_evsel__name(evsel); 2346 struct annotation *notes = symbol__annotation(sym); 2347 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 2348 struct annotation_line *pos, *queue = NULL; 2349 u64 start = map__rip_2objdump(map, sym->start); 2350 int printed = 2, queue_len = 0, addr_fmt_width; 2351 int more = 0; 2352 bool context = opts->context; 2353 u64 len; 2354 int width = symbol_conf.show_total_period ? 12 : 8; 2355 int graph_dotted_len; 2356 char buf[512]; 2357 2358 filename = strdup(dso->long_name); 2359 if (!filename) 2360 return -ENOMEM; 2361 2362 if (opts->full_path) 2363 d_filename = filename; 2364 else 2365 d_filename = basename(filename); 2366 2367 len = symbol__size(sym); 2368 2369 if (perf_evsel__is_group_event(evsel)) { 2370 width *= evsel->core.nr_members; 2371 perf_evsel__group_desc(evsel, buf, sizeof(buf)); 2372 evsel_name = buf; 2373 } 2374 2375 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, " 2376 "percent: %s)\n", 2377 width, width, symbol_conf.show_total_period ? "Period" : 2378 symbol_conf.show_nr_samples ? "Samples" : "Percent", 2379 d_filename, evsel_name, h->nr_samples, 2380 percent_type_str(opts->percent_type)); 2381 2382 printf("%-*.*s----\n", 2383 graph_dotted_len, graph_dotted_len, graph_dotted_line); 2384 2385 if (verbose > 0) 2386 symbol__annotate_hits(sym, evsel); 2387 2388 addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); 2389 2390 list_for_each_entry(pos, ¬es->src->source, node) { 2391 int err; 2392 2393 if (context && queue == NULL) { 2394 queue = pos; 2395 queue_len = 0; 2396 } 2397 2398 err = annotation_line__print(pos, sym, start, evsel, len, 2399 opts->min_pcnt, printed, opts->max_lines, 2400 queue, addr_fmt_width, opts->percent_type); 2401 2402 switch (err) { 2403 case 0: 2404 ++printed; 2405 if (context) { 2406 printed += queue_len; 2407 queue = NULL; 2408 queue_len = 0; 2409 } 2410 break; 2411 case 1: 2412 /* filtered by max_lines */ 2413 ++more; 2414 break; 2415 case -1: 2416 default: 2417 /* 2418 * Filtered by min_pcnt or non IP lines when 2419 * context != 0 2420 */ 2421 if (!context) 2422 break; 2423 if (queue_len == context) 2424 queue = list_entry(queue->node.next, typeof(*queue), node); 2425 else 2426 ++queue_len; 2427 break; 2428 } 2429 } 2430 2431 free(filename); 2432 2433 return more; 2434 } 2435 2436 static void FILE__set_percent_color(void *fp __maybe_unused, 2437 double percent __maybe_unused, 2438 bool current __maybe_unused) 2439 { 2440 } 2441 2442 static int FILE__set_jumps_percent_color(void *fp __maybe_unused, 2443 int nr __maybe_unused, bool current __maybe_unused) 2444 { 2445 return 0; 2446 } 2447 2448 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused) 2449 { 2450 return 0; 2451 } 2452 2453 static void FILE__printf(void *fp, const char *fmt, ...) 2454 { 2455 va_list args; 2456 2457 va_start(args, fmt); 2458 vfprintf(fp, fmt, args); 2459 va_end(args); 2460 } 2461 2462 static void FILE__write_graph(void *fp, int graph) 2463 { 2464 const char *s; 2465 switch (graph) { 2466 2467 case DARROW_CHAR: s = "↓"; break; 2468 case UARROW_CHAR: s = "↑"; break; 2469 case LARROW_CHAR: s = "←"; break; 2470 case RARROW_CHAR: s = "→"; break; 2471 default: s = "?"; break; 2472 } 2473 2474 fputs(s, fp); 2475 } 2476 2477 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp, 2478 struct annotation_options *opts) 2479 { 2480 struct annotation *notes = symbol__annotation(sym); 2481 struct annotation_write_ops wops = { 2482 .first_line = true, 2483 .obj = fp, 2484 .set_color = FILE__set_color, 2485 .set_percent_color = FILE__set_percent_color, 2486 .set_jumps_percent_color = FILE__set_jumps_percent_color, 2487 .printf = FILE__printf, 2488 .write_graph = FILE__write_graph, 2489 }; 2490 struct annotation_line *al; 2491 2492 list_for_each_entry(al, ¬es->src->source, node) { 2493 if (annotation_line__filter(al, notes)) 2494 continue; 2495 annotation_line__write(al, notes, &wops, opts); 2496 fputc('\n', fp); 2497 wops.first_line = false; 2498 } 2499 2500 return 0; 2501 } 2502 2503 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel, 2504 struct annotation_options *opts) 2505 { 2506 const char *ev_name = perf_evsel__name(evsel); 2507 char buf[1024]; 2508 char *filename; 2509 int err = -1; 2510 FILE *fp; 2511 2512 if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0) 2513 return -1; 2514 2515 fp = fopen(filename, "w"); 2516 if (fp == NULL) 2517 goto out_free_filename; 2518 2519 if (perf_evsel__is_group_event(evsel)) { 2520 perf_evsel__group_desc(evsel, buf, sizeof(buf)); 2521 ev_name = buf; 2522 } 2523 2524 fprintf(fp, "%s() %s\nEvent: %s\n\n", 2525 ms->sym->name, ms->map->dso->long_name, ev_name); 2526 symbol__annotate_fprintf2(ms->sym, fp, opts); 2527 2528 fclose(fp); 2529 err = 0; 2530 out_free_filename: 2531 free(filename); 2532 return err; 2533 } 2534 2535 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 2536 { 2537 struct annotation *notes = symbol__annotation(sym); 2538 struct sym_hist *h = annotation__histogram(notes, evidx); 2539 2540 memset(h, 0, notes->src->sizeof_sym_hist); 2541 } 2542 2543 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 2544 { 2545 struct annotation *notes = symbol__annotation(sym); 2546 struct sym_hist *h = annotation__histogram(notes, evidx); 2547 int len = symbol__size(sym), offset; 2548 2549 h->nr_samples = 0; 2550 for (offset = 0; offset < len; ++offset) { 2551 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; 2552 h->nr_samples += h->addr[offset].nr_samples; 2553 } 2554 } 2555 2556 void annotated_source__purge(struct annotated_source *as) 2557 { 2558 struct annotation_line *al, *n; 2559 2560 list_for_each_entry_safe(al, n, &as->source, node) { 2561 list_del_init(&al->node); 2562 disasm_line__free(disasm_line(al)); 2563 } 2564 } 2565 2566 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 2567 { 2568 size_t printed; 2569 2570 if (dl->al.offset == -1) 2571 return fprintf(fp, "%s\n", dl->al.line); 2572 2573 printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name); 2574 2575 if (dl->ops.raw[0] != '\0') { 2576 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 2577 dl->ops.raw); 2578 } 2579 2580 return printed + fprintf(fp, "\n"); 2581 } 2582 2583 size_t disasm__fprintf(struct list_head *head, FILE *fp) 2584 { 2585 struct disasm_line *pos; 2586 size_t printed = 0; 2587 2588 list_for_each_entry(pos, head, al.node) 2589 printed += disasm_line__fprintf(pos, fp); 2590 2591 return printed; 2592 } 2593 2594 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym) 2595 { 2596 if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) || 2597 !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 || 2598 dl->ops.target.offset >= (s64)symbol__size(sym)) 2599 return false; 2600 2601 return true; 2602 } 2603 2604 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym) 2605 { 2606 u64 offset, size = symbol__size(sym); 2607 2608 /* PLT symbols contain external offsets */ 2609 if (strstr(sym->name, "@plt")) 2610 return; 2611 2612 for (offset = 0; offset < size; ++offset) { 2613 struct annotation_line *al = notes->offsets[offset]; 2614 struct disasm_line *dl; 2615 2616 dl = disasm_line(al); 2617 2618 if (!disasm_line__is_valid_local_jump(dl, sym)) 2619 continue; 2620 2621 al = notes->offsets[dl->ops.target.offset]; 2622 2623 /* 2624 * FIXME: Oops, no jump target? Buggy disassembler? Or do we 2625 * have to adjust to the previous offset? 2626 */ 2627 if (al == NULL) 2628 continue; 2629 2630 if (++al->jump_sources > notes->max_jump_sources) 2631 notes->max_jump_sources = al->jump_sources; 2632 2633 ++notes->nr_jumps; 2634 } 2635 } 2636 2637 void annotation__set_offsets(struct annotation *notes, s64 size) 2638 { 2639 struct annotation_line *al; 2640 2641 notes->max_line_len = 0; 2642 2643 list_for_each_entry(al, ¬es->src->source, node) { 2644 size_t line_len = strlen(al->line); 2645 2646 if (notes->max_line_len < line_len) 2647 notes->max_line_len = line_len; 2648 al->idx = notes->nr_entries++; 2649 if (al->offset != -1) { 2650 al->idx_asm = notes->nr_asm_entries++; 2651 /* 2652 * FIXME: short term bandaid to cope with assembly 2653 * routines that comes with labels in the same column 2654 * as the address in objdump, sigh. 2655 * 2656 * E.g. copy_user_generic_unrolled 2657 */ 2658 if (al->offset < size) 2659 notes->offsets[al->offset] = al; 2660 } else 2661 al->idx_asm = -1; 2662 } 2663 } 2664 2665 static inline int width_jumps(int n) 2666 { 2667 if (n >= 100) 2668 return 5; 2669 if (n / 10) 2670 return 2; 2671 return 1; 2672 } 2673 2674 static int annotation__max_ins_name(struct annotation *notes) 2675 { 2676 int max_name = 0, len; 2677 struct annotation_line *al; 2678 2679 list_for_each_entry(al, ¬es->src->source, node) { 2680 if (al->offset == -1) 2681 continue; 2682 2683 len = strlen(disasm_line(al)->ins.name); 2684 if (max_name < len) 2685 max_name = len; 2686 } 2687 2688 return max_name; 2689 } 2690 2691 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym) 2692 { 2693 notes->widths.addr = notes->widths.target = 2694 notes->widths.min_addr = hex_width(symbol__size(sym)); 2695 notes->widths.max_addr = hex_width(sym->end); 2696 notes->widths.jumps = width_jumps(notes->max_jump_sources); 2697 notes->widths.max_ins_name = annotation__max_ins_name(notes); 2698 } 2699 2700 void annotation__update_column_widths(struct annotation *notes) 2701 { 2702 if (notes->options->use_offset) 2703 notes->widths.target = notes->widths.min_addr; 2704 else 2705 notes->widths.target = notes->widths.max_addr; 2706 2707 notes->widths.addr = notes->widths.target; 2708 2709 if (notes->options->show_nr_jumps) 2710 notes->widths.addr += notes->widths.jumps + 1; 2711 } 2712 2713 static void annotation__calc_lines(struct annotation *notes, struct map *map, 2714 struct rb_root *root, 2715 struct annotation_options *opts) 2716 { 2717 struct annotation_line *al; 2718 struct rb_root tmp_root = RB_ROOT; 2719 2720 list_for_each_entry(al, ¬es->src->source, node) { 2721 double percent_max = 0.0; 2722 int i; 2723 2724 for (i = 0; i < al->data_nr; i++) { 2725 double percent; 2726 2727 percent = annotation_data__percent(&al->data[i], 2728 opts->percent_type); 2729 2730 if (percent > percent_max) 2731 percent_max = percent; 2732 } 2733 2734 if (percent_max <= 0.5) 2735 continue; 2736 2737 al->path = get_srcline(map->dso, notes->start + al->offset, NULL, 2738 false, true, notes->start + al->offset); 2739 insert_source_line(&tmp_root, al, opts); 2740 } 2741 2742 resort_source_line(root, &tmp_root); 2743 } 2744 2745 static void symbol__calc_lines(struct symbol *sym, struct map *map, 2746 struct rb_root *root, 2747 struct annotation_options *opts) 2748 { 2749 struct annotation *notes = symbol__annotation(sym); 2750 2751 annotation__calc_lines(notes, map, root, opts); 2752 } 2753 2754 int symbol__tty_annotate2(struct symbol *sym, struct map *map, 2755 struct evsel *evsel, 2756 struct annotation_options *opts) 2757 { 2758 struct dso *dso = map->dso; 2759 struct rb_root source_line = RB_ROOT; 2760 struct hists *hists = evsel__hists(evsel); 2761 char buf[1024]; 2762 2763 if (symbol__annotate2(sym, map, evsel, opts, NULL) < 0) 2764 return -1; 2765 2766 if (opts->print_lines) { 2767 srcline_full_filename = opts->full_path; 2768 symbol__calc_lines(sym, map, &source_line, opts); 2769 print_summary(&source_line, dso->long_name); 2770 } 2771 2772 hists__scnprintf_title(hists, buf, sizeof(buf)); 2773 fprintf(stdout, "%s, [percent: %s]\n%s() %s\n", 2774 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name); 2775 symbol__annotate_fprintf2(sym, stdout, opts); 2776 2777 annotated_source__purge(symbol__annotation(sym)->src); 2778 2779 return 0; 2780 } 2781 2782 int symbol__tty_annotate(struct symbol *sym, struct map *map, 2783 struct evsel *evsel, 2784 struct annotation_options *opts) 2785 { 2786 struct dso *dso = map->dso; 2787 struct rb_root source_line = RB_ROOT; 2788 2789 if (symbol__annotate(sym, map, evsel, 0, opts, NULL) < 0) 2790 return -1; 2791 2792 symbol__calc_percent(sym, evsel); 2793 2794 if (opts->print_lines) { 2795 srcline_full_filename = opts->full_path; 2796 symbol__calc_lines(sym, map, &source_line, opts); 2797 print_summary(&source_line, dso->long_name); 2798 } 2799 2800 symbol__annotate_printf(sym, map, evsel, opts); 2801 2802 annotated_source__purge(symbol__annotation(sym)->src); 2803 2804 return 0; 2805 } 2806 2807 bool ui__has_annotation(void) 2808 { 2809 return use_browser == 1 && perf_hpp_list.sym; 2810 } 2811 2812 2813 static double annotation_line__max_percent(struct annotation_line *al, 2814 struct annotation *notes, 2815 unsigned int percent_type) 2816 { 2817 double percent_max = 0.0; 2818 int i; 2819 2820 for (i = 0; i < notes->nr_events; i++) { 2821 double percent; 2822 2823 percent = annotation_data__percent(&al->data[i], 2824 percent_type); 2825 2826 if (percent > percent_max) 2827 percent_max = percent; 2828 } 2829 2830 return percent_max; 2831 } 2832 2833 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes, 2834 void *obj, char *bf, size_t size, 2835 void (*obj__printf)(void *obj, const char *fmt, ...), 2836 void (*obj__write_graph)(void *obj, int graph)) 2837 { 2838 if (dl->ins.ops && dl->ins.ops->scnprintf) { 2839 if (ins__is_jump(&dl->ins)) { 2840 bool fwd; 2841 2842 if (dl->ops.target.outside) 2843 goto call_like; 2844 fwd = dl->ops.target.offset > dl->al.offset; 2845 obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR); 2846 obj__printf(obj, " "); 2847 } else if (ins__is_call(&dl->ins)) { 2848 call_like: 2849 obj__write_graph(obj, RARROW_CHAR); 2850 obj__printf(obj, " "); 2851 } else if (ins__is_ret(&dl->ins)) { 2852 obj__write_graph(obj, LARROW_CHAR); 2853 obj__printf(obj, " "); 2854 } else { 2855 obj__printf(obj, " "); 2856 } 2857 } else { 2858 obj__printf(obj, " "); 2859 } 2860 2861 disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name); 2862 } 2863 2864 static void ipc_coverage_string(char *bf, int size, struct annotation *notes) 2865 { 2866 double ipc = 0.0, coverage = 0.0; 2867 2868 if (notes->hit_cycles) 2869 ipc = notes->hit_insn / ((double)notes->hit_cycles); 2870 2871 if (notes->total_insn) { 2872 coverage = notes->cover_insn * 100.0 / 2873 ((double)notes->total_insn); 2874 } 2875 2876 scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)", 2877 ipc, coverage); 2878 } 2879 2880 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes, 2881 bool first_line, bool current_entry, bool change_color, int width, 2882 void *obj, unsigned int percent_type, 2883 int (*obj__set_color)(void *obj, int color), 2884 void (*obj__set_percent_color)(void *obj, double percent, bool current), 2885 int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current), 2886 void (*obj__printf)(void *obj, const char *fmt, ...), 2887 void (*obj__write_graph)(void *obj, int graph)) 2888 2889 { 2890 double percent_max = annotation_line__max_percent(al, notes, percent_type); 2891 int pcnt_width = annotation__pcnt_width(notes), 2892 cycles_width = annotation__cycles_width(notes); 2893 bool show_title = false; 2894 char bf[256]; 2895 int printed; 2896 2897 if (first_line && (al->offset == -1 || percent_max == 0.0)) { 2898 if (notes->have_cycles) { 2899 if (al->ipc == 0.0 && al->cycles == 0) 2900 show_title = true; 2901 } else 2902 show_title = true; 2903 } 2904 2905 if (al->offset != -1 && percent_max != 0.0) { 2906 int i; 2907 2908 for (i = 0; i < notes->nr_events; i++) { 2909 double percent; 2910 2911 percent = annotation_data__percent(&al->data[i], percent_type); 2912 2913 obj__set_percent_color(obj, percent, current_entry); 2914 if (notes->options->show_total_period) { 2915 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period); 2916 } else if (notes->options->show_nr_samples) { 2917 obj__printf(obj, "%6" PRIu64 " ", 2918 al->data[i].he.nr_samples); 2919 } else { 2920 obj__printf(obj, "%6.2f ", percent); 2921 } 2922 } 2923 } else { 2924 obj__set_percent_color(obj, 0, current_entry); 2925 2926 if (!show_title) 2927 obj__printf(obj, "%-*s", pcnt_width, " "); 2928 else { 2929 obj__printf(obj, "%-*s", pcnt_width, 2930 notes->options->show_total_period ? "Period" : 2931 notes->options->show_nr_samples ? "Samples" : "Percent"); 2932 } 2933 } 2934 2935 if (notes->have_cycles) { 2936 if (al->ipc) 2937 obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc); 2938 else if (!show_title) 2939 obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " "); 2940 else 2941 obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC"); 2942 2943 if (!notes->options->show_minmax_cycle) { 2944 if (al->cycles) 2945 obj__printf(obj, "%*" PRIu64 " ", 2946 ANNOTATION__CYCLES_WIDTH - 1, al->cycles); 2947 else if (!show_title) 2948 obj__printf(obj, "%*s", 2949 ANNOTATION__CYCLES_WIDTH, " "); 2950 else 2951 obj__printf(obj, "%*s ", 2952 ANNOTATION__CYCLES_WIDTH - 1, 2953 "Cycle"); 2954 } else { 2955 if (al->cycles) { 2956 char str[32]; 2957 2958 scnprintf(str, sizeof(str), 2959 "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")", 2960 al->cycles, al->cycles_min, 2961 al->cycles_max); 2962 2963 obj__printf(obj, "%*s ", 2964 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 2965 str); 2966 } else if (!show_title) 2967 obj__printf(obj, "%*s", 2968 ANNOTATION__MINMAX_CYCLES_WIDTH, 2969 " "); 2970 else 2971 obj__printf(obj, "%*s ", 2972 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 2973 "Cycle(min/max)"); 2974 } 2975 2976 if (show_title && !*al->line) { 2977 ipc_coverage_string(bf, sizeof(bf), notes); 2978 obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf); 2979 } 2980 } 2981 2982 obj__printf(obj, " "); 2983 2984 if (!*al->line) 2985 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " "); 2986 else if (al->offset == -1) { 2987 if (al->line_nr && notes->options->show_linenr) 2988 printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr); 2989 else 2990 printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->widths.addr, " "); 2991 obj__printf(obj, bf); 2992 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line); 2993 } else { 2994 u64 addr = al->offset; 2995 int color = -1; 2996 2997 if (!notes->options->use_offset) 2998 addr += notes->start; 2999 3000 if (!notes->options->use_offset) { 3001 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr); 3002 } else { 3003 if (al->jump_sources && 3004 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) { 3005 if (notes->options->show_nr_jumps) { 3006 int prev; 3007 printed = scnprintf(bf, sizeof(bf), "%*d ", 3008 notes->widths.jumps, 3009 al->jump_sources); 3010 prev = obj__set_jumps_percent_color(obj, al->jump_sources, 3011 current_entry); 3012 obj__printf(obj, bf); 3013 obj__set_color(obj, prev); 3014 } 3015 print_addr: 3016 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ", 3017 notes->widths.target, addr); 3018 } else if (ins__is_call(&disasm_line(al)->ins) && 3019 notes->options->offset_level >= ANNOTATION__OFFSET_CALL) { 3020 goto print_addr; 3021 } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) { 3022 goto print_addr; 3023 } else { 3024 printed = scnprintf(bf, sizeof(bf), "%-*s ", 3025 notes->widths.addr, " "); 3026 } 3027 } 3028 3029 if (change_color) 3030 color = obj__set_color(obj, HE_COLORSET_ADDR); 3031 obj__printf(obj, bf); 3032 if (change_color) 3033 obj__set_color(obj, color); 3034 3035 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph); 3036 3037 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf); 3038 } 3039 3040 } 3041 3042 void annotation_line__write(struct annotation_line *al, struct annotation *notes, 3043 struct annotation_write_ops *wops, 3044 struct annotation_options *opts) 3045 { 3046 __annotation_line__write(al, notes, wops->first_line, wops->current_entry, 3047 wops->change_color, wops->width, wops->obj, 3048 opts->percent_type, 3049 wops->set_color, wops->set_percent_color, 3050 wops->set_jumps_percent_color, wops->printf, 3051 wops->write_graph); 3052 } 3053 3054 int symbol__annotate2(struct symbol *sym, struct map *map, struct evsel *evsel, 3055 struct annotation_options *options, struct arch **parch) 3056 { 3057 struct annotation *notes = symbol__annotation(sym); 3058 size_t size = symbol__size(sym); 3059 int nr_pcnt = 1, err; 3060 3061 notes->offsets = zalloc(size * sizeof(struct annotation_line *)); 3062 if (notes->offsets == NULL) 3063 return ENOMEM; 3064 3065 if (perf_evsel__is_group_event(evsel)) 3066 nr_pcnt = evsel->core.nr_members; 3067 3068 err = symbol__annotate(sym, map, evsel, 0, options, parch); 3069 if (err) 3070 goto out_free_offsets; 3071 3072 notes->options = options; 3073 3074 symbol__calc_percent(sym, evsel); 3075 3076 annotation__set_offsets(notes, size); 3077 annotation__mark_jump_targets(notes, sym); 3078 annotation__compute_ipc(notes, size); 3079 annotation__init_column_widths(notes, sym); 3080 notes->nr_events = nr_pcnt; 3081 3082 annotation__update_column_widths(notes); 3083 sym->annotate2 = true; 3084 3085 return 0; 3086 3087 out_free_offsets: 3088 zfree(¬es->offsets); 3089 return err; 3090 } 3091 3092 #define ANNOTATION__CFG(n) \ 3093 { .name = #n, .value = &annotation__default_options.n, } 3094 3095 /* 3096 * Keep the entries sorted, they are bsearch'ed 3097 */ 3098 static struct annotation_config { 3099 const char *name; 3100 void *value; 3101 } annotation__configs[] = { 3102 ANNOTATION__CFG(hide_src_code), 3103 ANNOTATION__CFG(jump_arrows), 3104 ANNOTATION__CFG(offset_level), 3105 ANNOTATION__CFG(show_linenr), 3106 ANNOTATION__CFG(show_nr_jumps), 3107 ANNOTATION__CFG(show_nr_samples), 3108 ANNOTATION__CFG(show_total_period), 3109 ANNOTATION__CFG(use_offset), 3110 }; 3111 3112 #undef ANNOTATION__CFG 3113 3114 static int annotation_config__cmp(const void *name, const void *cfgp) 3115 { 3116 const struct annotation_config *cfg = cfgp; 3117 3118 return strcmp(name, cfg->name); 3119 } 3120 3121 static int annotation__config(const char *var, const char *value, 3122 void *data __maybe_unused) 3123 { 3124 struct annotation_config *cfg; 3125 const char *name; 3126 3127 if (!strstarts(var, "annotate.")) 3128 return 0; 3129 3130 name = var + 9; 3131 cfg = bsearch(name, annotation__configs, ARRAY_SIZE(annotation__configs), 3132 sizeof(struct annotation_config), annotation_config__cmp); 3133 3134 if (cfg == NULL) 3135 pr_debug("%s variable unknown, ignoring...", var); 3136 else if (strcmp(var, "annotate.offset_level") == 0) { 3137 perf_config_int(cfg->value, name, value); 3138 3139 if (*(int *)cfg->value > ANNOTATION__MAX_OFFSET_LEVEL) 3140 *(int *)cfg->value = ANNOTATION__MAX_OFFSET_LEVEL; 3141 else if (*(int *)cfg->value < ANNOTATION__MIN_OFFSET_LEVEL) 3142 *(int *)cfg->value = ANNOTATION__MIN_OFFSET_LEVEL; 3143 } else { 3144 *(bool *)cfg->value = perf_config_bool(name, value); 3145 } 3146 return 0; 3147 } 3148 3149 void annotation_config__init(void) 3150 { 3151 perf_config(annotation__config, NULL); 3152 3153 annotation__default_options.show_total_period = symbol_conf.show_total_period; 3154 annotation__default_options.show_nr_samples = symbol_conf.show_nr_samples; 3155 } 3156 3157 static unsigned int parse_percent_type(char *str1, char *str2) 3158 { 3159 unsigned int type = (unsigned int) -1; 3160 3161 if (!strcmp("period", str1)) { 3162 if (!strcmp("local", str2)) 3163 type = PERCENT_PERIOD_LOCAL; 3164 else if (!strcmp("global", str2)) 3165 type = PERCENT_PERIOD_GLOBAL; 3166 } 3167 3168 if (!strcmp("hits", str1)) { 3169 if (!strcmp("local", str2)) 3170 type = PERCENT_HITS_LOCAL; 3171 else if (!strcmp("global", str2)) 3172 type = PERCENT_HITS_GLOBAL; 3173 } 3174 3175 return type; 3176 } 3177 3178 int annotate_parse_percent_type(const struct option *opt, const char *_str, 3179 int unset __maybe_unused) 3180 { 3181 struct annotation_options *opts = opt->value; 3182 unsigned int type; 3183 char *str1, *str2; 3184 int err = -1; 3185 3186 str1 = strdup(_str); 3187 if (!str1) 3188 return -ENOMEM; 3189 3190 str2 = strchr(str1, '-'); 3191 if (!str2) 3192 goto out; 3193 3194 *str2++ = 0; 3195 3196 type = parse_percent_type(str1, str2); 3197 if (type == (unsigned int) -1) 3198 type = parse_percent_type(str2, str1); 3199 if (type != (unsigned int) -1) { 3200 opts->percent_type = type; 3201 err = 0; 3202 } 3203 3204 out: 3205 free(str1); 3206 return err; 3207 } 3208