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 "util.h" // hex_width() 14 #include "ui/ui.h" 15 #include "sort.h" 16 #include "build-id.h" 17 #include "color.h" 18 #include "config.h" 19 #include "dso.h" 20 #include "env.h" 21 #include "map.h" 22 #include "maps.h" 23 #include "symbol.h" 24 #include "srcline.h" 25 #include "units.h" 26 #include "debug.h" 27 #include "annotate.h" 28 #include "evsel.h" 29 #include "evlist.h" 30 #include "bpf-event.h" 31 #include "block-range.h" 32 #include "string2.h" 33 #include "util/event.h" 34 #include "arch/common.h" 35 #include <regex.h> 36 #include <pthread.h> 37 #include <linux/bitops.h> 38 #include <linux/kernel.h> 39 #include <linux/string.h> 40 #include <subcmd/parse-options.h> 41 #include <subcmd/run-command.h> 42 43 /* FIXME: For the HE_COLORSET */ 44 #include "ui/browser.h" 45 46 /* 47 * FIXME: Using the same values as slang.h, 48 * but that header may not be available everywhere 49 */ 50 #define LARROW_CHAR ((unsigned char)',') 51 #define RARROW_CHAR ((unsigned char)'+') 52 #define DARROW_CHAR ((unsigned char)'.') 53 #define UARROW_CHAR ((unsigned char)'-') 54 55 #include <linux/ctype.h> 56 57 struct annotation_options annotation__default_options = { 58 .use_offset = true, 59 .jump_arrows = true, 60 .annotate_src = true, 61 .offset_level = ANNOTATION__OFFSET_JUMP_TARGETS, 62 .percent_type = PERCENT_PERIOD_LOCAL, 63 }; 64 65 static regex_t file_lineno; 66 67 static struct ins_ops *ins__find(struct arch *arch, const char *name); 68 static void ins__sort(struct arch *arch); 69 static int disasm_line__parse(char *line, const char **namep, char **rawp); 70 71 struct arch { 72 const char *name; 73 struct ins *instructions; 74 size_t nr_instructions; 75 size_t nr_instructions_allocated; 76 struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name); 77 bool sorted_instructions; 78 bool initialized; 79 void *priv; 80 unsigned int model; 81 unsigned int family; 82 int (*init)(struct arch *arch, char *cpuid); 83 bool (*ins_is_fused)(struct arch *arch, const char *ins1, 84 const char *ins2); 85 struct { 86 char comment_char; 87 char skip_functions_char; 88 } objdump; 89 }; 90 91 static struct ins_ops call_ops; 92 static struct ins_ops dec_ops; 93 static struct ins_ops jump_ops; 94 static struct ins_ops mov_ops; 95 static struct ins_ops nop_ops; 96 static struct ins_ops lock_ops; 97 static struct ins_ops ret_ops; 98 99 static int arch__grow_instructions(struct arch *arch) 100 { 101 struct ins *new_instructions; 102 size_t new_nr_allocated; 103 104 if (arch->nr_instructions_allocated == 0 && arch->instructions) 105 goto grow_from_non_allocated_table; 106 107 new_nr_allocated = arch->nr_instructions_allocated + 128; 108 new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins)); 109 if (new_instructions == NULL) 110 return -1; 111 112 out_update_instructions: 113 arch->instructions = new_instructions; 114 arch->nr_instructions_allocated = new_nr_allocated; 115 return 0; 116 117 grow_from_non_allocated_table: 118 new_nr_allocated = arch->nr_instructions + 128; 119 new_instructions = calloc(new_nr_allocated, sizeof(struct ins)); 120 if (new_instructions == NULL) 121 return -1; 122 123 memcpy(new_instructions, arch->instructions, arch->nr_instructions); 124 goto out_update_instructions; 125 } 126 127 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops) 128 { 129 struct ins *ins; 130 131 if (arch->nr_instructions == arch->nr_instructions_allocated && 132 arch__grow_instructions(arch)) 133 return -1; 134 135 ins = &arch->instructions[arch->nr_instructions]; 136 ins->name = strdup(name); 137 if (!ins->name) 138 return -1; 139 140 ins->ops = ops; 141 arch->nr_instructions++; 142 143 ins__sort(arch); 144 return 0; 145 } 146 147 #include "arch/arc/annotate/instructions.c" 148 #include "arch/arm/annotate/instructions.c" 149 #include "arch/arm64/annotate/instructions.c" 150 #include "arch/csky/annotate/instructions.c" 151 #include "arch/mips/annotate/instructions.c" 152 #include "arch/x86/annotate/instructions.c" 153 #include "arch/powerpc/annotate/instructions.c" 154 #include "arch/s390/annotate/instructions.c" 155 #include "arch/sparc/annotate/instructions.c" 156 157 static struct arch architectures[] = { 158 { 159 .name = "arc", 160 .init = arc__annotate_init, 161 }, 162 { 163 .name = "arm", 164 .init = arm__annotate_init, 165 }, 166 { 167 .name = "arm64", 168 .init = arm64__annotate_init, 169 }, 170 { 171 .name = "csky", 172 .init = csky__annotate_init, 173 }, 174 { 175 .name = "mips", 176 .init = mips__annotate_init, 177 .objdump = { 178 .comment_char = '#', 179 }, 180 }, 181 { 182 .name = "x86", 183 .init = x86__annotate_init, 184 .instructions = x86__instructions, 185 .nr_instructions = ARRAY_SIZE(x86__instructions), 186 .objdump = { 187 .comment_char = '#', 188 }, 189 }, 190 { 191 .name = "powerpc", 192 .init = powerpc__annotate_init, 193 }, 194 { 195 .name = "s390", 196 .init = s390__annotate_init, 197 .objdump = { 198 .comment_char = '#', 199 }, 200 }, 201 { 202 .name = "sparc", 203 .init = sparc__annotate_init, 204 .objdump = { 205 .comment_char = '#', 206 }, 207 }, 208 }; 209 210 static void ins__delete(struct ins_operands *ops) 211 { 212 if (ops == NULL) 213 return; 214 zfree(&ops->source.raw); 215 zfree(&ops->source.name); 216 zfree(&ops->target.raw); 217 zfree(&ops->target.name); 218 } 219 220 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 221 struct ins_operands *ops, int max_ins_name) 222 { 223 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw); 224 } 225 226 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 227 struct ins_operands *ops, int max_ins_name) 228 { 229 if (ins->ops->scnprintf) 230 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name); 231 232 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 233 } 234 235 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2) 236 { 237 if (!arch || !arch->ins_is_fused) 238 return false; 239 240 return arch->ins_is_fused(arch, ins1, ins2); 241 } 242 243 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 244 { 245 char *endptr, *tok, *name; 246 struct map *map = ms->map; 247 struct addr_map_symbol target = { 248 .ms = { .map = map, }, 249 }; 250 251 ops->target.addr = strtoull(ops->raw, &endptr, 16); 252 253 name = strchr(endptr, '<'); 254 if (name == NULL) 255 goto indirect_call; 256 257 name++; 258 259 if (arch->objdump.skip_functions_char && 260 strchr(name, arch->objdump.skip_functions_char)) 261 return -1; 262 263 tok = strchr(name, '>'); 264 if (tok == NULL) 265 return -1; 266 267 *tok = '\0'; 268 ops->target.name = strdup(name); 269 *tok = '>'; 270 271 if (ops->target.name == NULL) 272 return -1; 273 find_target: 274 target.addr = map__objdump_2mem(map, ops->target.addr); 275 276 if (maps__find_ams(ms->maps, &target) == 0 && 277 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 278 ops->target.sym = target.ms.sym; 279 280 return 0; 281 282 indirect_call: 283 tok = strchr(endptr, '*'); 284 if (tok != NULL) { 285 endptr++; 286 287 /* Indirect call can use a non-rip register and offset: callq *0x8(%rbx). 288 * Do not parse such instruction. */ 289 if (strstr(endptr, "(%r") == NULL) 290 ops->target.addr = strtoull(endptr, NULL, 16); 291 } 292 goto find_target; 293 } 294 295 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 296 struct ins_operands *ops, int max_ins_name) 297 { 298 if (ops->target.sym) 299 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 300 301 if (ops->target.addr == 0) 302 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 303 304 if (ops->target.name) 305 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name); 306 307 return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr); 308 } 309 310 static struct ins_ops call_ops = { 311 .parse = call__parse, 312 .scnprintf = call__scnprintf, 313 }; 314 315 bool ins__is_call(const struct ins *ins) 316 { 317 return ins->ops == &call_ops || ins->ops == &s390_call_ops; 318 } 319 320 /* 321 * Prevents from matching commas in the comment section, e.g.: 322 * ffff200008446e70: b.cs ffff2000084470f4 <generic_exec_single+0x314> // b.hs, b.nlast 323 * 324 * and skip comma as part of function arguments, e.g.: 325 * 1d8b4ac <linemap_lookup(line_maps const*, unsigned int)+0xcc> 326 */ 327 static inline const char *validate_comma(const char *c, struct ins_operands *ops) 328 { 329 if (ops->raw_comment && c > ops->raw_comment) 330 return NULL; 331 332 if (ops->raw_func_start && c > ops->raw_func_start) 333 return NULL; 334 335 return c; 336 } 337 338 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 339 { 340 struct map *map = ms->map; 341 struct symbol *sym = ms->sym; 342 struct addr_map_symbol target = { 343 .ms = { .map = map, }, 344 }; 345 const char *c = strchr(ops->raw, ','); 346 u64 start, end; 347 348 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char); 349 ops->raw_func_start = strchr(ops->raw, '<'); 350 351 c = validate_comma(c, ops); 352 353 /* 354 * Examples of lines to parse for the _cpp_lex_token@@Base 355 * function: 356 * 357 * 1159e6c: jne 115aa32 <_cpp_lex_token@@Base+0xf92> 358 * 1159e8b: jne c469be <cpp_named_operator2name@@Base+0xa72> 359 * 360 * The first is a jump to an offset inside the same function, 361 * the second is to another function, i.e. that 0xa72 is an 362 * offset in the cpp_named_operator2name@@base function. 363 */ 364 /* 365 * skip over possible up to 2 operands to get to address, e.g.: 366 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> 367 */ 368 if (c++ != NULL) { 369 ops->target.addr = strtoull(c, NULL, 16); 370 if (!ops->target.addr) { 371 c = strchr(c, ','); 372 c = validate_comma(c, ops); 373 if (c++ != NULL) 374 ops->target.addr = strtoull(c, NULL, 16); 375 } 376 } else { 377 ops->target.addr = strtoull(ops->raw, NULL, 16); 378 } 379 380 target.addr = map__objdump_2mem(map, ops->target.addr); 381 start = map->unmap_ip(map, sym->start), 382 end = map->unmap_ip(map, sym->end); 383 384 ops->target.outside = target.addr < start || target.addr > end; 385 386 /* 387 * FIXME: things like this in _cpp_lex_token (gcc's cc1 program): 388 389 cpp_named_operator2name@@Base+0xa72 390 391 * Point to a place that is after the cpp_named_operator2name 392 * boundaries, i.e. in the ELF symbol table for cc1 393 * cpp_named_operator2name is marked as being 32-bytes long, but it in 394 * fact is much larger than that, so we seem to need a symbols__find() 395 * routine that looks for >= current->start and < next_symbol->start, 396 * possibly just for C++ objects? 397 * 398 * For now lets just make some progress by marking jumps to outside the 399 * current function as call like. 400 * 401 * Actual navigation will come next, with further understanding of how 402 * the symbol searching and disassembly should be done. 403 */ 404 if (maps__find_ams(ms->maps, &target) == 0 && 405 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 406 ops->target.sym = target.ms.sym; 407 408 if (!ops->target.outside) { 409 ops->target.offset = target.addr - start; 410 ops->target.offset_avail = true; 411 } else { 412 ops->target.offset_avail = false; 413 } 414 415 return 0; 416 } 417 418 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 419 struct ins_operands *ops, int max_ins_name) 420 { 421 const char *c; 422 423 if (!ops->target.addr || ops->target.offset < 0) 424 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 425 426 if (ops->target.outside && ops->target.sym != NULL) 427 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 428 429 c = strchr(ops->raw, ','); 430 c = validate_comma(c, ops); 431 432 if (c != NULL) { 433 const char *c2 = strchr(c + 1, ','); 434 435 c2 = validate_comma(c2, ops); 436 /* check for 3-op insn */ 437 if (c2 != NULL) 438 c = c2; 439 c++; 440 441 /* mirror arch objdump's space-after-comma style */ 442 if (*c == ' ') 443 c++; 444 } 445 446 return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name, 447 ins->name, c ? c - ops->raw : 0, ops->raw, 448 ops->target.offset); 449 } 450 451 static struct ins_ops jump_ops = { 452 .parse = jump__parse, 453 .scnprintf = jump__scnprintf, 454 }; 455 456 bool ins__is_jump(const struct ins *ins) 457 { 458 return ins->ops == &jump_ops; 459 } 460 461 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 462 { 463 char *endptr, *name, *t; 464 465 if (strstr(raw, "(%rip)") == NULL) 466 return 0; 467 468 *addrp = strtoull(comment, &endptr, 16); 469 if (endptr == comment) 470 return 0; 471 name = strchr(endptr, '<'); 472 if (name == NULL) 473 return -1; 474 475 name++; 476 477 t = strchr(name, '>'); 478 if (t == NULL) 479 return 0; 480 481 *t = '\0'; 482 *namep = strdup(name); 483 *t = '>'; 484 485 return 0; 486 } 487 488 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 489 { 490 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 491 if (ops->locked.ops == NULL) 492 return 0; 493 494 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0) 495 goto out_free_ops; 496 497 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name); 498 499 if (ops->locked.ins.ops == NULL) 500 goto out_free_ops; 501 502 if (ops->locked.ins.ops->parse && 503 ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0) 504 goto out_free_ops; 505 506 return 0; 507 508 out_free_ops: 509 zfree(&ops->locked.ops); 510 return 0; 511 } 512 513 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 514 struct ins_operands *ops, int max_ins_name) 515 { 516 int printed; 517 518 if (ops->locked.ins.ops == NULL) 519 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 520 521 printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name); 522 return printed + ins__scnprintf(&ops->locked.ins, bf + printed, 523 size - printed, ops->locked.ops, max_ins_name); 524 } 525 526 static void lock__delete(struct ins_operands *ops) 527 { 528 struct ins *ins = &ops->locked.ins; 529 530 if (ins->ops && ins->ops->free) 531 ins->ops->free(ops->locked.ops); 532 else 533 ins__delete(ops->locked.ops); 534 535 zfree(&ops->locked.ops); 536 zfree(&ops->target.raw); 537 zfree(&ops->target.name); 538 } 539 540 static struct ins_ops lock_ops = { 541 .free = lock__delete, 542 .parse = lock__parse, 543 .scnprintf = lock__scnprintf, 544 }; 545 546 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 547 { 548 char *s = strchr(ops->raw, ','), *target, *comment, prev; 549 550 if (s == NULL) 551 return -1; 552 553 *s = '\0'; 554 ops->source.raw = strdup(ops->raw); 555 *s = ','; 556 557 if (ops->source.raw == NULL) 558 return -1; 559 560 target = ++s; 561 comment = strchr(s, arch->objdump.comment_char); 562 563 if (comment != NULL) 564 s = comment - 1; 565 else 566 s = strchr(s, '\0') - 1; 567 568 while (s > target && isspace(s[0])) 569 --s; 570 s++; 571 prev = *s; 572 *s = '\0'; 573 574 ops->target.raw = strdup(target); 575 *s = prev; 576 577 if (ops->target.raw == NULL) 578 goto out_free_source; 579 580 if (comment == NULL) 581 return 0; 582 583 comment = skip_spaces(comment); 584 comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name); 585 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 586 587 return 0; 588 589 out_free_source: 590 zfree(&ops->source.raw); 591 return -1; 592 } 593 594 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 595 struct ins_operands *ops, int max_ins_name) 596 { 597 return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name, 598 ops->source.name ?: ops->source.raw, 599 ops->target.name ?: ops->target.raw); 600 } 601 602 static struct ins_ops mov_ops = { 603 .parse = mov__parse, 604 .scnprintf = mov__scnprintf, 605 }; 606 607 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 608 { 609 char *target, *comment, *s, prev; 610 611 target = s = ops->raw; 612 613 while (s[0] != '\0' && !isspace(s[0])) 614 ++s; 615 prev = *s; 616 *s = '\0'; 617 618 ops->target.raw = strdup(target); 619 *s = prev; 620 621 if (ops->target.raw == NULL) 622 return -1; 623 624 comment = strchr(s, arch->objdump.comment_char); 625 if (comment == NULL) 626 return 0; 627 628 comment = skip_spaces(comment); 629 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 630 631 return 0; 632 } 633 634 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 635 struct ins_operands *ops, int max_ins_name) 636 { 637 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, 638 ops->target.name ?: ops->target.raw); 639 } 640 641 static struct ins_ops dec_ops = { 642 .parse = dec__parse, 643 .scnprintf = dec__scnprintf, 644 }; 645 646 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 647 struct ins_operands *ops __maybe_unused, int max_ins_name) 648 { 649 return scnprintf(bf, size, "%-*s", max_ins_name, "nop"); 650 } 651 652 static struct ins_ops nop_ops = { 653 .scnprintf = nop__scnprintf, 654 }; 655 656 static struct ins_ops ret_ops = { 657 .scnprintf = ins__raw_scnprintf, 658 }; 659 660 bool ins__is_ret(const struct ins *ins) 661 { 662 return ins->ops == &ret_ops; 663 } 664 665 bool ins__is_lock(const struct ins *ins) 666 { 667 return ins->ops == &lock_ops; 668 } 669 670 static int ins__key_cmp(const void *name, const void *insp) 671 { 672 const struct ins *ins = insp; 673 674 return strcmp(name, ins->name); 675 } 676 677 static int ins__cmp(const void *a, const void *b) 678 { 679 const struct ins *ia = a; 680 const struct ins *ib = b; 681 682 return strcmp(ia->name, ib->name); 683 } 684 685 static void ins__sort(struct arch *arch) 686 { 687 const int nmemb = arch->nr_instructions; 688 689 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp); 690 } 691 692 static struct ins_ops *__ins__find(struct arch *arch, const char *name) 693 { 694 struct ins *ins; 695 const int nmemb = arch->nr_instructions; 696 697 if (!arch->sorted_instructions) { 698 ins__sort(arch); 699 arch->sorted_instructions = true; 700 } 701 702 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp); 703 return ins ? ins->ops : NULL; 704 } 705 706 static struct ins_ops *ins__find(struct arch *arch, const char *name) 707 { 708 struct ins_ops *ops = __ins__find(arch, name); 709 710 if (!ops && arch->associate_instruction_ops) 711 ops = arch->associate_instruction_ops(arch, name); 712 713 return ops; 714 } 715 716 static int arch__key_cmp(const void *name, const void *archp) 717 { 718 const struct arch *arch = archp; 719 720 return strcmp(name, arch->name); 721 } 722 723 static int arch__cmp(const void *a, const void *b) 724 { 725 const struct arch *aa = a; 726 const struct arch *ab = b; 727 728 return strcmp(aa->name, ab->name); 729 } 730 731 static void arch__sort(void) 732 { 733 const int nmemb = ARRAY_SIZE(architectures); 734 735 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); 736 } 737 738 static struct arch *arch__find(const char *name) 739 { 740 const int nmemb = ARRAY_SIZE(architectures); 741 static bool sorted; 742 743 if (!sorted) { 744 arch__sort(); 745 sorted = true; 746 } 747 748 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); 749 } 750 751 static struct annotated_source *annotated_source__new(void) 752 { 753 struct annotated_source *src = zalloc(sizeof(*src)); 754 755 if (src != NULL) 756 INIT_LIST_HEAD(&src->source); 757 758 return src; 759 } 760 761 static __maybe_unused void annotated_source__delete(struct annotated_source *src) 762 { 763 if (src == NULL) 764 return; 765 zfree(&src->histograms); 766 zfree(&src->cycles_hist); 767 free(src); 768 } 769 770 static int annotated_source__alloc_histograms(struct annotated_source *src, 771 size_t size, int nr_hists) 772 { 773 size_t sizeof_sym_hist; 774 775 /* 776 * Add buffer of one element for zero length symbol. 777 * When sample is taken from first instruction of 778 * zero length symbol, perf still resolves it and 779 * shows symbol name in perf report and allows to 780 * annotate it. 781 */ 782 if (size == 0) 783 size = 1; 784 785 /* Check for overflow when calculating sizeof_sym_hist */ 786 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) 787 return -1; 788 789 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); 790 791 /* Check for overflow in zalloc argument */ 792 if (sizeof_sym_hist > SIZE_MAX / nr_hists) 793 return -1; 794 795 src->sizeof_sym_hist = sizeof_sym_hist; 796 src->nr_histograms = nr_hists; 797 src->histograms = calloc(nr_hists, sizeof_sym_hist) ; 798 return src->histograms ? 0 : -1; 799 } 800 801 /* The cycles histogram is lazily allocated. */ 802 static int symbol__alloc_hist_cycles(struct symbol *sym) 803 { 804 struct annotation *notes = symbol__annotation(sym); 805 const size_t size = symbol__size(sym); 806 807 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 808 if (notes->src->cycles_hist == NULL) 809 return -1; 810 return 0; 811 } 812 813 void symbol__annotate_zero_histograms(struct symbol *sym) 814 { 815 struct annotation *notes = symbol__annotation(sym); 816 817 pthread_mutex_lock(¬es->lock); 818 if (notes->src != NULL) { 819 memset(notes->src->histograms, 0, 820 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 821 if (notes->src->cycles_hist) 822 memset(notes->src->cycles_hist, 0, 823 symbol__size(sym) * sizeof(struct cyc_hist)); 824 } 825 pthread_mutex_unlock(¬es->lock); 826 } 827 828 static int __symbol__account_cycles(struct cyc_hist *ch, 829 u64 start, 830 unsigned offset, unsigned cycles, 831 unsigned have_start) 832 { 833 /* 834 * For now we can only account one basic block per 835 * final jump. But multiple could be overlapping. 836 * Always account the longest one. So when 837 * a shorter one has been already seen throw it away. 838 * 839 * We separately always account the full cycles. 840 */ 841 ch[offset].num_aggr++; 842 ch[offset].cycles_aggr += cycles; 843 844 if (cycles > ch[offset].cycles_max) 845 ch[offset].cycles_max = cycles; 846 847 if (ch[offset].cycles_min) { 848 if (cycles && cycles < ch[offset].cycles_min) 849 ch[offset].cycles_min = cycles; 850 } else 851 ch[offset].cycles_min = cycles; 852 853 if (!have_start && ch[offset].have_start) 854 return 0; 855 if (ch[offset].num) { 856 if (have_start && (!ch[offset].have_start || 857 ch[offset].start > start)) { 858 ch[offset].have_start = 0; 859 ch[offset].cycles = 0; 860 ch[offset].num = 0; 861 if (ch[offset].reset < 0xffff) 862 ch[offset].reset++; 863 } else if (have_start && 864 ch[offset].start < start) 865 return 0; 866 } 867 868 if (ch[offset].num < NUM_SPARKS) 869 ch[offset].cycles_spark[ch[offset].num] = cycles; 870 871 ch[offset].have_start = have_start; 872 ch[offset].start = start; 873 ch[offset].cycles += cycles; 874 ch[offset].num++; 875 return 0; 876 } 877 878 static int __symbol__inc_addr_samples(struct map_symbol *ms, 879 struct annotated_source *src, int evidx, u64 addr, 880 struct perf_sample *sample) 881 { 882 struct symbol *sym = ms->sym; 883 unsigned offset; 884 struct sym_hist *h; 885 886 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr)); 887 888 if ((addr < sym->start || addr >= sym->end) && 889 (addr != sym->end || sym->start != sym->end)) { 890 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 891 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 892 return -ERANGE; 893 } 894 895 offset = addr - sym->start; 896 h = annotated_source__histogram(src, evidx); 897 if (h == NULL) { 898 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n", 899 __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC); 900 return -ENOMEM; 901 } 902 h->nr_samples++; 903 h->addr[offset].nr_samples++; 904 h->period += sample->period; 905 h->addr[offset].period += sample->period; 906 907 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 908 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", 909 sym->start, sym->name, addr, addr - sym->start, evidx, 910 h->addr[offset].nr_samples, h->addr[offset].period); 911 return 0; 912 } 913 914 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym) 915 { 916 struct annotation *notes = symbol__annotation(sym); 917 918 if (notes->src == NULL) { 919 notes->src = annotated_source__new(); 920 if (notes->src == NULL) 921 return NULL; 922 goto alloc_cycles_hist; 923 } 924 925 if (!notes->src->cycles_hist) { 926 alloc_cycles_hist: 927 symbol__alloc_hist_cycles(sym); 928 } 929 930 return notes->src->cycles_hist; 931 } 932 933 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists) 934 { 935 struct annotation *notes = symbol__annotation(sym); 936 937 if (notes->src == NULL) { 938 notes->src = annotated_source__new(); 939 if (notes->src == NULL) 940 return NULL; 941 goto alloc_histograms; 942 } 943 944 if (notes->src->histograms == NULL) { 945 alloc_histograms: 946 annotated_source__alloc_histograms(notes->src, symbol__size(sym), 947 nr_hists); 948 } 949 950 return notes->src; 951 } 952 953 static int symbol__inc_addr_samples(struct map_symbol *ms, 954 struct evsel *evsel, u64 addr, 955 struct perf_sample *sample) 956 { 957 struct symbol *sym = ms->sym; 958 struct annotated_source *src; 959 960 if (sym == NULL) 961 return 0; 962 src = symbol__hists(sym, evsel->evlist->core.nr_entries); 963 return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0; 964 } 965 966 static int symbol__account_cycles(u64 addr, u64 start, 967 struct symbol *sym, unsigned cycles) 968 { 969 struct cyc_hist *cycles_hist; 970 unsigned offset; 971 972 if (sym == NULL) 973 return 0; 974 cycles_hist = symbol__cycles_hist(sym); 975 if (cycles_hist == NULL) 976 return -ENOMEM; 977 if (addr < sym->start || addr >= sym->end) 978 return -ERANGE; 979 980 if (start) { 981 if (start < sym->start || start >= sym->end) 982 return -ERANGE; 983 if (start >= addr) 984 start = 0; 985 } 986 offset = addr - sym->start; 987 return __symbol__account_cycles(cycles_hist, 988 start ? start - sym->start : 0, 989 offset, cycles, 990 !!start); 991 } 992 993 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 994 struct addr_map_symbol *start, 995 unsigned cycles) 996 { 997 u64 saddr = 0; 998 int err; 999 1000 if (!cycles) 1001 return 0; 1002 1003 /* 1004 * Only set start when IPC can be computed. We can only 1005 * compute it when the basic block is completely in a single 1006 * function. 1007 * Special case the case when the jump is elsewhere, but 1008 * it starts on the function start. 1009 */ 1010 if (start && 1011 (start->ms.sym == ams->ms.sym || 1012 (ams->ms.sym && 1013 start->addr == ams->ms.sym->start + ams->ms.map->start))) 1014 saddr = start->al_addr; 1015 if (saddr == 0) 1016 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 1017 ams->addr, 1018 start ? start->addr : 0, 1019 ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0, 1020 saddr); 1021 err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles); 1022 if (err) 1023 pr_debug2("account_cycles failed %d\n", err); 1024 return err; 1025 } 1026 1027 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end) 1028 { 1029 unsigned n_insn = 0; 1030 u64 offset; 1031 1032 for (offset = start; offset <= end; offset++) { 1033 if (notes->offsets[offset]) 1034 n_insn++; 1035 } 1036 return n_insn; 1037 } 1038 1039 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch) 1040 { 1041 unsigned n_insn; 1042 unsigned int cover_insn = 0; 1043 u64 offset; 1044 1045 n_insn = annotation__count_insn(notes, start, end); 1046 if (n_insn && ch->num && ch->cycles) { 1047 float ipc = n_insn / ((double)ch->cycles / (double)ch->num); 1048 1049 /* Hide data when there are too many overlaps. */ 1050 if (ch->reset >= 0x7fff) 1051 return; 1052 1053 for (offset = start; offset <= end; offset++) { 1054 struct annotation_line *al = notes->offsets[offset]; 1055 1056 if (al && al->ipc == 0.0) { 1057 al->ipc = ipc; 1058 cover_insn++; 1059 } 1060 } 1061 1062 if (cover_insn) { 1063 notes->hit_cycles += ch->cycles; 1064 notes->hit_insn += n_insn * ch->num; 1065 notes->cover_insn += cover_insn; 1066 } 1067 } 1068 } 1069 1070 void annotation__compute_ipc(struct annotation *notes, size_t size) 1071 { 1072 s64 offset; 1073 1074 if (!notes->src || !notes->src->cycles_hist) 1075 return; 1076 1077 notes->total_insn = annotation__count_insn(notes, 0, size - 1); 1078 notes->hit_cycles = 0; 1079 notes->hit_insn = 0; 1080 notes->cover_insn = 0; 1081 1082 pthread_mutex_lock(¬es->lock); 1083 for (offset = size - 1; offset >= 0; --offset) { 1084 struct cyc_hist *ch; 1085 1086 ch = ¬es->src->cycles_hist[offset]; 1087 if (ch && ch->cycles) { 1088 struct annotation_line *al; 1089 1090 if (ch->have_start) 1091 annotation__count_and_fill(notes, ch->start, offset, ch); 1092 al = notes->offsets[offset]; 1093 if (al && ch->num_aggr) { 1094 al->cycles = ch->cycles_aggr / ch->num_aggr; 1095 al->cycles_max = ch->cycles_max; 1096 al->cycles_min = ch->cycles_min; 1097 } 1098 notes->have_cycles = true; 1099 } 1100 } 1101 pthread_mutex_unlock(¬es->lock); 1102 } 1103 1104 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 1105 struct evsel *evsel) 1106 { 1107 return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample); 1108 } 1109 1110 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 1111 struct evsel *evsel, u64 ip) 1112 { 1113 return symbol__inc_addr_samples(&he->ms, evsel, ip, sample); 1114 } 1115 1116 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms) 1117 { 1118 dl->ins.ops = ins__find(arch, dl->ins.name); 1119 1120 if (!dl->ins.ops) 1121 return; 1122 1123 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0) 1124 dl->ins.ops = NULL; 1125 } 1126 1127 static int disasm_line__parse(char *line, const char **namep, char **rawp) 1128 { 1129 char tmp, *name = skip_spaces(line); 1130 1131 if (name[0] == '\0') 1132 return -1; 1133 1134 *rawp = name + 1; 1135 1136 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 1137 ++*rawp; 1138 1139 tmp = (*rawp)[0]; 1140 (*rawp)[0] = '\0'; 1141 *namep = strdup(name); 1142 1143 if (*namep == NULL) 1144 goto out; 1145 1146 (*rawp)[0] = tmp; 1147 *rawp = strim(*rawp); 1148 1149 return 0; 1150 1151 out: 1152 return -1; 1153 } 1154 1155 struct annotate_args { 1156 struct arch *arch; 1157 struct map_symbol ms; 1158 struct evsel *evsel; 1159 struct annotation_options *options; 1160 s64 offset; 1161 char *line; 1162 int line_nr; 1163 char *fileloc; 1164 }; 1165 1166 static void annotation_line__init(struct annotation_line *al, 1167 struct annotate_args *args, 1168 int nr) 1169 { 1170 al->offset = args->offset; 1171 al->line = strdup(args->line); 1172 al->line_nr = args->line_nr; 1173 al->fileloc = args->fileloc; 1174 al->data_nr = nr; 1175 } 1176 1177 static void annotation_line__exit(struct annotation_line *al) 1178 { 1179 free_srcline(al->path); 1180 zfree(&al->line); 1181 } 1182 1183 static size_t disasm_line_size(int nr) 1184 { 1185 struct annotation_line *al; 1186 1187 return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr)); 1188 } 1189 1190 /* 1191 * Allocating the disasm annotation line data with 1192 * following structure: 1193 * 1194 * ------------------------------------------- 1195 * struct disasm_line | struct annotation_line 1196 * ------------------------------------------- 1197 * 1198 * We have 'struct annotation_line' member as last member 1199 * of 'struct disasm_line' to have an easy access. 1200 */ 1201 static struct disasm_line *disasm_line__new(struct annotate_args *args) 1202 { 1203 struct disasm_line *dl = NULL; 1204 int nr = 1; 1205 1206 if (evsel__is_group_event(args->evsel)) 1207 nr = args->evsel->core.nr_members; 1208 1209 dl = zalloc(disasm_line_size(nr)); 1210 if (!dl) 1211 return NULL; 1212 1213 annotation_line__init(&dl->al, args, nr); 1214 if (dl->al.line == NULL) 1215 goto out_delete; 1216 1217 if (args->offset != -1) { 1218 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0) 1219 goto out_free_line; 1220 1221 disasm_line__init_ins(dl, args->arch, &args->ms); 1222 } 1223 1224 return dl; 1225 1226 out_free_line: 1227 zfree(&dl->al.line); 1228 out_delete: 1229 free(dl); 1230 return NULL; 1231 } 1232 1233 void disasm_line__free(struct disasm_line *dl) 1234 { 1235 if (dl->ins.ops && dl->ins.ops->free) 1236 dl->ins.ops->free(&dl->ops); 1237 else 1238 ins__delete(&dl->ops); 1239 zfree(&dl->ins.name); 1240 annotation_line__exit(&dl->al); 1241 free(dl); 1242 } 1243 1244 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name) 1245 { 1246 if (raw || !dl->ins.ops) 1247 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw); 1248 1249 return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name); 1250 } 1251 1252 static void annotation_line__add(struct annotation_line *al, struct list_head *head) 1253 { 1254 list_add_tail(&al->node, head); 1255 } 1256 1257 struct annotation_line * 1258 annotation_line__next(struct annotation_line *pos, struct list_head *head) 1259 { 1260 list_for_each_entry_continue(pos, head, node) 1261 if (pos->offset >= 0) 1262 return pos; 1263 1264 return NULL; 1265 } 1266 1267 static const char *annotate__address_color(struct block_range *br) 1268 { 1269 double cov = block_range__coverage(br); 1270 1271 if (cov >= 0) { 1272 /* mark red for >75% coverage */ 1273 if (cov > 0.75) 1274 return PERF_COLOR_RED; 1275 1276 /* mark dull for <1% coverage */ 1277 if (cov < 0.01) 1278 return PERF_COLOR_NORMAL; 1279 } 1280 1281 return PERF_COLOR_MAGENTA; 1282 } 1283 1284 static const char *annotate__asm_color(struct block_range *br) 1285 { 1286 double cov = block_range__coverage(br); 1287 1288 if (cov >= 0) { 1289 /* mark dull for <1% coverage */ 1290 if (cov < 0.01) 1291 return PERF_COLOR_NORMAL; 1292 } 1293 1294 return PERF_COLOR_BLUE; 1295 } 1296 1297 static void annotate__branch_printf(struct block_range *br, u64 addr) 1298 { 1299 bool emit_comment = true; 1300 1301 if (!br) 1302 return; 1303 1304 #if 1 1305 if (br->is_target && br->start == addr) { 1306 struct block_range *branch = br; 1307 double p; 1308 1309 /* 1310 * Find matching branch to our target. 1311 */ 1312 while (!branch->is_branch) 1313 branch = block_range__next(branch); 1314 1315 p = 100 *(double)br->entry / branch->coverage; 1316 1317 if (p > 0.1) { 1318 if (emit_comment) { 1319 emit_comment = false; 1320 printf("\t#"); 1321 } 1322 1323 /* 1324 * The percentage of coverage joined at this target in relation 1325 * to the next branch. 1326 */ 1327 printf(" +%.2f%%", p); 1328 } 1329 } 1330 #endif 1331 if (br->is_branch && br->end == addr) { 1332 double p = 100*(double)br->taken / br->coverage; 1333 1334 if (p > 0.1) { 1335 if (emit_comment) { 1336 emit_comment = false; 1337 printf("\t#"); 1338 } 1339 1340 /* 1341 * The percentage of coverage leaving at this branch, and 1342 * its prediction ratio. 1343 */ 1344 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 1345 } 1346 } 1347 } 1348 1349 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width) 1350 { 1351 s64 offset = dl->al.offset; 1352 const u64 addr = start + offset; 1353 struct block_range *br; 1354 1355 br = block_range__find(addr); 1356 color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr); 1357 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line); 1358 annotate__branch_printf(br, addr); 1359 return 0; 1360 } 1361 1362 static int 1363 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, 1364 struct evsel *evsel, u64 len, int min_pcnt, int printed, 1365 int max_lines, struct annotation_line *queue, int addr_fmt_width, 1366 int percent_type) 1367 { 1368 struct disasm_line *dl = container_of(al, struct disasm_line, al); 1369 static const char *prev_line; 1370 1371 if (al->offset != -1) { 1372 double max_percent = 0.0; 1373 int i, nr_percent = 1; 1374 const char *color; 1375 struct annotation *notes = symbol__annotation(sym); 1376 1377 for (i = 0; i < al->data_nr; i++) { 1378 double percent; 1379 1380 percent = annotation_data__percent(&al->data[i], 1381 percent_type); 1382 1383 if (percent > max_percent) 1384 max_percent = percent; 1385 } 1386 1387 if (al->data_nr > nr_percent) 1388 nr_percent = al->data_nr; 1389 1390 if (max_percent < min_pcnt) 1391 return -1; 1392 1393 if (max_lines && printed >= max_lines) 1394 return 1; 1395 1396 if (queue != NULL) { 1397 list_for_each_entry_from(queue, ¬es->src->source, node) { 1398 if (queue == al) 1399 break; 1400 annotation_line__print(queue, sym, start, evsel, len, 1401 0, 0, 1, NULL, addr_fmt_width, 1402 percent_type); 1403 } 1404 } 1405 1406 color = get_percent_color(max_percent); 1407 1408 for (i = 0; i < nr_percent; i++) { 1409 struct annotation_data *data = &al->data[i]; 1410 double percent; 1411 1412 percent = annotation_data__percent(data, percent_type); 1413 color = get_percent_color(percent); 1414 1415 if (symbol_conf.show_total_period) 1416 color_fprintf(stdout, color, " %11" PRIu64, 1417 data->he.period); 1418 else if (symbol_conf.show_nr_samples) 1419 color_fprintf(stdout, color, " %7" PRIu64, 1420 data->he.nr_samples); 1421 else 1422 color_fprintf(stdout, color, " %7.2f", percent); 1423 } 1424 1425 printf(" : "); 1426 1427 disasm_line__print(dl, start, addr_fmt_width); 1428 1429 /* 1430 * Also color the filename and line if needed, with 1431 * the same color than the percentage. Don't print it 1432 * twice for close colored addr with the same filename:line 1433 */ 1434 if (al->path) { 1435 if (!prev_line || strcmp(prev_line, al->path)) { 1436 color_fprintf(stdout, color, " // %s", al->path); 1437 prev_line = al->path; 1438 } 1439 } 1440 1441 printf("\n"); 1442 } else if (max_lines && printed >= max_lines) 1443 return 1; 1444 else { 1445 int width = symbol_conf.show_total_period ? 12 : 8; 1446 1447 if (queue) 1448 return -1; 1449 1450 if (evsel__is_group_event(evsel)) 1451 width *= evsel->core.nr_members; 1452 1453 if (!*al->line) 1454 printf(" %*s:\n", width, " "); 1455 else 1456 printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line); 1457 } 1458 1459 return 0; 1460 } 1461 1462 /* 1463 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1464 * which looks like following 1465 * 1466 * 0000000000415500 <_init>: 1467 * 415500: sub $0x8,%rsp 1468 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1469 * 41550b: test %rax,%rax 1470 * 41550e: je 415515 <_init+0x15> 1471 * 415510: callq 416e70 <__gmon_start__@plt> 1472 * 415515: add $0x8,%rsp 1473 * 415519: retq 1474 * 1475 * it will be parsed and saved into struct disasm_line as 1476 * <offset> <name> <ops.raw> 1477 * 1478 * The offset will be a relative offset from the start of the symbol and -1 1479 * means that it's not a disassembly line so should be treated differently. 1480 * The ops.raw part will be parsed further according to type of the instruction. 1481 */ 1482 static int symbol__parse_objdump_line(struct symbol *sym, 1483 struct annotate_args *args, 1484 char *parsed_line, int *line_nr, char **fileloc) 1485 { 1486 struct map *map = args->ms.map; 1487 struct annotation *notes = symbol__annotation(sym); 1488 struct disasm_line *dl; 1489 char *tmp; 1490 s64 line_ip, offset = -1; 1491 regmatch_t match[2]; 1492 1493 /* /filename:linenr ? Save line number and ignore. */ 1494 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { 1495 *line_nr = atoi(parsed_line + match[1].rm_so); 1496 *fileloc = strdup(parsed_line); 1497 return 0; 1498 } 1499 1500 /* Process hex address followed by ':'. */ 1501 line_ip = strtoull(parsed_line, &tmp, 16); 1502 if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') { 1503 u64 start = map__rip_2objdump(map, sym->start), 1504 end = map__rip_2objdump(map, sym->end); 1505 1506 offset = line_ip - start; 1507 if ((u64)line_ip < start || (u64)line_ip >= end) 1508 offset = -1; 1509 else 1510 parsed_line = tmp + 1; 1511 } 1512 1513 args->offset = offset; 1514 args->line = parsed_line; 1515 args->line_nr = *line_nr; 1516 args->fileloc = *fileloc; 1517 args->ms.sym = sym; 1518 1519 dl = disasm_line__new(args); 1520 (*line_nr)++; 1521 1522 if (dl == NULL) 1523 return -1; 1524 1525 if (!disasm_line__has_local_offset(dl)) { 1526 dl->ops.target.offset = dl->ops.target.addr - 1527 map__rip_2objdump(map, sym->start); 1528 dl->ops.target.offset_avail = true; 1529 } 1530 1531 /* kcore has no symbols, so add the call target symbol */ 1532 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) { 1533 struct addr_map_symbol target = { 1534 .addr = dl->ops.target.addr, 1535 .ms = { .map = map, }, 1536 }; 1537 1538 if (!maps__find_ams(args->ms.maps, &target) && 1539 target.ms.sym->start == target.al_addr) 1540 dl->ops.target.sym = target.ms.sym; 1541 } 1542 1543 annotation_line__add(&dl->al, ¬es->src->source); 1544 1545 return 0; 1546 } 1547 1548 static __attribute__((constructor)) void symbol__init_regexpr(void) 1549 { 1550 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1551 } 1552 1553 static void delete_last_nop(struct symbol *sym) 1554 { 1555 struct annotation *notes = symbol__annotation(sym); 1556 struct list_head *list = ¬es->src->source; 1557 struct disasm_line *dl; 1558 1559 while (!list_empty(list)) { 1560 dl = list_entry(list->prev, struct disasm_line, al.node); 1561 1562 if (dl->ins.ops) { 1563 if (dl->ins.ops != &nop_ops) 1564 return; 1565 } else { 1566 if (!strstr(dl->al.line, " nop ") && 1567 !strstr(dl->al.line, " nopl ") && 1568 !strstr(dl->al.line, " nopw ")) 1569 return; 1570 } 1571 1572 list_del_init(&dl->al.node); 1573 disasm_line__free(dl); 1574 } 1575 } 1576 1577 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen) 1578 { 1579 struct dso *dso = ms->map->dso; 1580 1581 BUG_ON(buflen == 0); 1582 1583 if (errnum >= 0) { 1584 str_error_r(errnum, buf, buflen); 1585 return 0; 1586 } 1587 1588 switch (errnum) { 1589 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1590 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1591 char *build_id_msg = NULL; 1592 1593 if (dso->has_build_id) { 1594 build_id__sprintf(&dso->bid, bf + 15); 1595 build_id_msg = bf; 1596 } 1597 scnprintf(buf, buflen, 1598 "No vmlinux file%s\nwas found in the path.\n\n" 1599 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1600 "Please use:\n\n" 1601 " perf buildid-cache -vu vmlinux\n\n" 1602 "or:\n\n" 1603 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1604 } 1605 break; 1606 case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF: 1607 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation"); 1608 break; 1609 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP: 1610 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions."); 1611 break; 1612 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING: 1613 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization."); 1614 break; 1615 case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE: 1616 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name); 1617 break; 1618 case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF: 1619 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.", 1620 dso->long_name); 1621 break; 1622 default: 1623 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1624 break; 1625 } 1626 1627 return 0; 1628 } 1629 1630 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1631 { 1632 char linkname[PATH_MAX]; 1633 char *build_id_filename; 1634 char *build_id_path = NULL; 1635 char *pos; 1636 int len; 1637 1638 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1639 !dso__is_kcore(dso)) 1640 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1641 1642 build_id_filename = dso__build_id_filename(dso, NULL, 0, false); 1643 if (build_id_filename) { 1644 __symbol__join_symfs(filename, filename_size, build_id_filename); 1645 free(build_id_filename); 1646 } else { 1647 if (dso->has_build_id) 1648 return ENOMEM; 1649 goto fallback; 1650 } 1651 1652 build_id_path = strdup(filename); 1653 if (!build_id_path) 1654 return ENOMEM; 1655 1656 /* 1657 * old style build-id cache has name of XX/XXXXXXX.. while 1658 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}. 1659 * extract the build-id part of dirname in the new style only. 1660 */ 1661 pos = strrchr(build_id_path, '/'); 1662 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2) 1663 dirname(build_id_path); 1664 1665 if (dso__is_kcore(dso)) 1666 goto fallback; 1667 1668 len = readlink(build_id_path, linkname, sizeof(linkname) - 1); 1669 if (len < 0) 1670 goto fallback; 1671 1672 linkname[len] = '\0'; 1673 if (strstr(linkname, DSO__NAME_KALLSYMS) || 1674 access(filename, R_OK)) { 1675 fallback: 1676 /* 1677 * If we don't have build-ids or the build-id file isn't in the 1678 * cache, or is just a kallsyms file, well, lets hope that this 1679 * DSO is the same as when 'perf record' ran. 1680 */ 1681 __symbol__join_symfs(filename, filename_size, dso->long_name); 1682 } 1683 1684 free(build_id_path); 1685 return 0; 1686 } 1687 1688 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1689 #define PACKAGE "perf" 1690 #include <bfd.h> 1691 #include <dis-asm.h> 1692 #include <bpf/bpf.h> 1693 #include <bpf/btf.h> 1694 #include <bpf/libbpf.h> 1695 #include <linux/btf.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->fileloc = NULL; 1812 args->ms.sym = sym; 1813 dl = disasm_line__new(args); 1814 if (dl) { 1815 annotation_line__add(&dl->al, 1816 ¬es->src->source); 1817 } 1818 } 1819 1820 args->offset = pc; 1821 args->line = buf + prev_buf_size; 1822 args->line_nr = 0; 1823 args->fileloc = NULL; 1824 args->ms.sym = sym; 1825 dl = disasm_line__new(args); 1826 if (dl) 1827 annotation_line__add(&dl->al, ¬es->src->source); 1828 1829 pc += count; 1830 } while (count > 0 && pc < len); 1831 1832 ret = 0; 1833 out: 1834 free(prog_linfo); 1835 btf__free(btf); 1836 fclose(s); 1837 bfd_close(bfdf); 1838 return ret; 1839 } 1840 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1841 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused, 1842 struct annotate_args *args __maybe_unused) 1843 { 1844 return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF; 1845 } 1846 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1847 1848 static int 1849 symbol__disassemble_bpf_image(struct symbol *sym, 1850 struct annotate_args *args) 1851 { 1852 struct annotation *notes = symbol__annotation(sym); 1853 struct disasm_line *dl; 1854 1855 args->offset = -1; 1856 args->line = strdup("to be implemented"); 1857 args->line_nr = 0; 1858 args->fileloc = NULL; 1859 dl = disasm_line__new(args); 1860 if (dl) 1861 annotation_line__add(&dl->al, ¬es->src->source); 1862 1863 free(args->line); 1864 return 0; 1865 } 1866 1867 /* 1868 * Possibly create a new version of line with tabs expanded. Returns the 1869 * existing or new line, storage is updated if a new line is allocated. If 1870 * allocation fails then NULL is returned. 1871 */ 1872 static char *expand_tabs(char *line, char **storage, size_t *storage_len) 1873 { 1874 size_t i, src, dst, len, new_storage_len, num_tabs; 1875 char *new_line; 1876 size_t line_len = strlen(line); 1877 1878 for (num_tabs = 0, i = 0; i < line_len; i++) 1879 if (line[i] == '\t') 1880 num_tabs++; 1881 1882 if (num_tabs == 0) 1883 return line; 1884 1885 /* 1886 * Space for the line and '\0', less the leading and trailing 1887 * spaces. Each tab may introduce 7 additional spaces. 1888 */ 1889 new_storage_len = line_len + 1 + (num_tabs * 7); 1890 1891 new_line = malloc(new_storage_len); 1892 if (new_line == NULL) { 1893 pr_err("Failure allocating memory for tab expansion\n"); 1894 return NULL; 1895 } 1896 1897 /* 1898 * Copy regions starting at src and expand tabs. If there are two 1899 * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces 1900 * are inserted. 1901 */ 1902 for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) { 1903 if (line[i] == '\t') { 1904 len = i - src; 1905 memcpy(&new_line[dst], &line[src], len); 1906 dst += len; 1907 new_line[dst++] = ' '; 1908 while (dst % 8 != 0) 1909 new_line[dst++] = ' '; 1910 src = i + 1; 1911 num_tabs--; 1912 } 1913 } 1914 1915 /* Expand the last region. */ 1916 len = line_len - src; 1917 memcpy(&new_line[dst], &line[src], len); 1918 dst += len; 1919 new_line[dst] = '\0'; 1920 1921 free(*storage); 1922 *storage = new_line; 1923 *storage_len = new_storage_len; 1924 return new_line; 1925 1926 } 1927 1928 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args) 1929 { 1930 struct annotation_options *opts = args->options; 1931 struct map *map = args->ms.map; 1932 struct dso *dso = map->dso; 1933 char *command; 1934 FILE *file; 1935 char symfs_filename[PATH_MAX]; 1936 struct kcore_extract kce; 1937 bool delete_extract = false; 1938 bool decomp = false; 1939 int lineno = 0; 1940 char *fileloc = NULL; 1941 int nline; 1942 char *line; 1943 size_t line_len; 1944 const char *objdump_argv[] = { 1945 "/bin/sh", 1946 "-c", 1947 NULL, /* Will be the objdump command to run. */ 1948 "--", 1949 NULL, /* Will be the symfs path. */ 1950 NULL, 1951 }; 1952 struct child_process objdump_process; 1953 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1954 1955 if (err) 1956 return err; 1957 1958 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1959 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1960 map->unmap_ip(map, sym->end)); 1961 1962 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1963 dso, dso->long_name, sym, sym->name); 1964 1965 if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) { 1966 return symbol__disassemble_bpf(sym, args); 1967 } else if (dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE) { 1968 return symbol__disassemble_bpf_image(sym, args); 1969 } else if (dso__is_kcore(dso)) { 1970 kce.kcore_filename = symfs_filename; 1971 kce.addr = map__rip_2objdump(map, sym->start); 1972 kce.offs = sym->start; 1973 kce.len = sym->end - sym->start; 1974 if (!kcore_extract__create(&kce)) { 1975 delete_extract = true; 1976 strlcpy(symfs_filename, kce.extract_filename, 1977 sizeof(symfs_filename)); 1978 } 1979 } else if (dso__needs_decompress(dso)) { 1980 char tmp[KMOD_DECOMP_LEN]; 1981 1982 if (dso__decompress_kmodule_path(dso, symfs_filename, 1983 tmp, sizeof(tmp)) < 0) 1984 return -1; 1985 1986 decomp = true; 1987 strcpy(symfs_filename, tmp); 1988 } 1989 1990 err = asprintf(&command, 1991 "%s %s%s --start-address=0x%016" PRIx64 1992 " --stop-address=0x%016" PRIx64 1993 " -l -d %s %s %s %c%s%c %s%s -C \"$1\"", 1994 opts->objdump_path ?: "objdump", 1995 opts->disassembler_style ? "-M " : "", 1996 opts->disassembler_style ?: "", 1997 map__rip_2objdump(map, sym->start), 1998 map__rip_2objdump(map, sym->end), 1999 opts->show_asm_raw ? "" : "--no-show-raw-insn", 2000 opts->annotate_src ? "-S" : "", 2001 opts->prefix ? "--prefix " : "", 2002 opts->prefix ? '"' : ' ', 2003 opts->prefix ?: "", 2004 opts->prefix ? '"' : ' ', 2005 opts->prefix_strip ? "--prefix-strip=" : "", 2006 opts->prefix_strip ?: ""); 2007 2008 if (err < 0) { 2009 pr_err("Failure allocating memory for the command to run\n"); 2010 goto out_remove_tmp; 2011 } 2012 2013 pr_debug("Executing: %s\n", command); 2014 2015 objdump_argv[2] = command; 2016 objdump_argv[4] = symfs_filename; 2017 2018 /* Create a pipe to read from for stdout */ 2019 memset(&objdump_process, 0, sizeof(objdump_process)); 2020 objdump_process.argv = objdump_argv; 2021 objdump_process.out = -1; 2022 if (start_command(&objdump_process)) { 2023 pr_err("Failure starting to run %s\n", command); 2024 err = -1; 2025 goto out_free_command; 2026 } 2027 2028 file = fdopen(objdump_process.out, "r"); 2029 if (!file) { 2030 pr_err("Failure creating FILE stream for %s\n", command); 2031 /* 2032 * If we were using debug info should retry with 2033 * original binary. 2034 */ 2035 err = -1; 2036 goto out_close_stdout; 2037 } 2038 2039 /* Storage for getline. */ 2040 line = NULL; 2041 line_len = 0; 2042 2043 nline = 0; 2044 while (!feof(file)) { 2045 const char *match; 2046 char *expanded_line; 2047 2048 if (getline(&line, &line_len, file) < 0 || !line) 2049 break; 2050 2051 /* Skip lines containing "filename:" */ 2052 match = strstr(line, symfs_filename); 2053 if (match && match[strlen(symfs_filename)] == ':') 2054 continue; 2055 2056 expanded_line = strim(line); 2057 expanded_line = expand_tabs(expanded_line, &line, &line_len); 2058 if (!expanded_line) 2059 break; 2060 2061 /* 2062 * The source code line number (lineno) needs to be kept in 2063 * across calls to symbol__parse_objdump_line(), so that it 2064 * can associate it with the instructions till the next one. 2065 * See disasm_line__new() and struct disasm_line::line_nr. 2066 */ 2067 if (symbol__parse_objdump_line(sym, args, expanded_line, 2068 &lineno, &fileloc) < 0) 2069 break; 2070 nline++; 2071 } 2072 free(line); 2073 2074 err = finish_command(&objdump_process); 2075 if (err) 2076 pr_err("Error running %s\n", command); 2077 2078 if (nline == 0) { 2079 err = -1; 2080 pr_err("No output from %s\n", command); 2081 } 2082 2083 /* 2084 * kallsyms does not have symbol sizes so there may a nop at the end. 2085 * Remove it. 2086 */ 2087 if (dso__is_kcore(dso)) 2088 delete_last_nop(sym); 2089 2090 fclose(file); 2091 2092 out_close_stdout: 2093 close(objdump_process.out); 2094 2095 out_free_command: 2096 free(command); 2097 2098 out_remove_tmp: 2099 if (decomp) 2100 unlink(symfs_filename); 2101 2102 if (delete_extract) 2103 kcore_extract__delete(&kce); 2104 2105 return err; 2106 } 2107 2108 static void calc_percent(struct sym_hist *sym_hist, 2109 struct hists *hists, 2110 struct annotation_data *data, 2111 s64 offset, s64 end) 2112 { 2113 unsigned int hits = 0; 2114 u64 period = 0; 2115 2116 while (offset < end) { 2117 hits += sym_hist->addr[offset].nr_samples; 2118 period += sym_hist->addr[offset].period; 2119 ++offset; 2120 } 2121 2122 if (sym_hist->nr_samples) { 2123 data->he.period = period; 2124 data->he.nr_samples = hits; 2125 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples; 2126 } 2127 2128 if (hists->stats.nr_non_filtered_samples) 2129 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples; 2130 2131 if (sym_hist->period) 2132 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period; 2133 2134 if (hists->stats.total_period) 2135 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period; 2136 } 2137 2138 static void annotation__calc_percent(struct annotation *notes, 2139 struct evsel *leader, s64 len) 2140 { 2141 struct annotation_line *al, *next; 2142 struct evsel *evsel; 2143 2144 list_for_each_entry(al, ¬es->src->source, node) { 2145 s64 end; 2146 int i = 0; 2147 2148 if (al->offset == -1) 2149 continue; 2150 2151 next = annotation_line__next(al, ¬es->src->source); 2152 end = next ? next->offset : len; 2153 2154 for_each_group_evsel(evsel, leader) { 2155 struct hists *hists = evsel__hists(evsel); 2156 struct annotation_data *data; 2157 struct sym_hist *sym_hist; 2158 2159 BUG_ON(i >= al->data_nr); 2160 2161 sym_hist = annotation__histogram(notes, evsel->core.idx); 2162 data = &al->data[i++]; 2163 2164 calc_percent(sym_hist, hists, data, al->offset, end); 2165 } 2166 } 2167 } 2168 2169 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel) 2170 { 2171 struct annotation *notes = symbol__annotation(sym); 2172 2173 annotation__calc_percent(notes, evsel, symbol__size(sym)); 2174 } 2175 2176 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel, 2177 struct annotation_options *options, struct arch **parch) 2178 { 2179 struct symbol *sym = ms->sym; 2180 struct annotation *notes = symbol__annotation(sym); 2181 struct annotate_args args = { 2182 .evsel = evsel, 2183 .options = options, 2184 }; 2185 struct perf_env *env = evsel__env(evsel); 2186 const char *arch_name = perf_env__arch(env); 2187 struct arch *arch; 2188 int err; 2189 2190 if (!arch_name) 2191 return errno; 2192 2193 args.arch = arch = arch__find(arch_name); 2194 if (arch == NULL) { 2195 pr_err("%s: unsupported arch %s\n", __func__, arch_name); 2196 return ENOTSUP; 2197 } 2198 2199 if (parch) 2200 *parch = arch; 2201 2202 if (arch->init) { 2203 err = arch->init(arch, env ? env->cpuid : NULL); 2204 if (err) { 2205 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); 2206 return err; 2207 } 2208 } 2209 2210 args.ms = *ms; 2211 notes->start = map__rip_2objdump(ms->map, sym->start); 2212 2213 return symbol__disassemble(sym, &args); 2214 } 2215 2216 static void insert_source_line(struct rb_root *root, struct annotation_line *al, 2217 struct annotation_options *opts) 2218 { 2219 struct annotation_line *iter; 2220 struct rb_node **p = &root->rb_node; 2221 struct rb_node *parent = NULL; 2222 int i, ret; 2223 2224 while (*p != NULL) { 2225 parent = *p; 2226 iter = rb_entry(parent, struct annotation_line, rb_node); 2227 2228 ret = strcmp(iter->path, al->path); 2229 if (ret == 0) { 2230 for (i = 0; i < al->data_nr; i++) { 2231 iter->data[i].percent_sum += annotation_data__percent(&al->data[i], 2232 opts->percent_type); 2233 } 2234 return; 2235 } 2236 2237 if (ret < 0) 2238 p = &(*p)->rb_left; 2239 else 2240 p = &(*p)->rb_right; 2241 } 2242 2243 for (i = 0; i < al->data_nr; i++) { 2244 al->data[i].percent_sum = annotation_data__percent(&al->data[i], 2245 opts->percent_type); 2246 } 2247 2248 rb_link_node(&al->rb_node, parent, p); 2249 rb_insert_color(&al->rb_node, root); 2250 } 2251 2252 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b) 2253 { 2254 int i; 2255 2256 for (i = 0; i < a->data_nr; i++) { 2257 if (a->data[i].percent_sum == b->data[i].percent_sum) 2258 continue; 2259 return a->data[i].percent_sum > b->data[i].percent_sum; 2260 } 2261 2262 return 0; 2263 } 2264 2265 static void __resort_source_line(struct rb_root *root, struct annotation_line *al) 2266 { 2267 struct annotation_line *iter; 2268 struct rb_node **p = &root->rb_node; 2269 struct rb_node *parent = NULL; 2270 2271 while (*p != NULL) { 2272 parent = *p; 2273 iter = rb_entry(parent, struct annotation_line, rb_node); 2274 2275 if (cmp_source_line(al, iter)) 2276 p = &(*p)->rb_left; 2277 else 2278 p = &(*p)->rb_right; 2279 } 2280 2281 rb_link_node(&al->rb_node, parent, p); 2282 rb_insert_color(&al->rb_node, root); 2283 } 2284 2285 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 2286 { 2287 struct annotation_line *al; 2288 struct rb_node *node; 2289 2290 node = rb_first(src_root); 2291 while (node) { 2292 struct rb_node *next; 2293 2294 al = rb_entry(node, struct annotation_line, rb_node); 2295 next = rb_next(node); 2296 rb_erase(node, src_root); 2297 2298 __resort_source_line(dest_root, al); 2299 node = next; 2300 } 2301 } 2302 2303 static void print_summary(struct rb_root *root, const char *filename) 2304 { 2305 struct annotation_line *al; 2306 struct rb_node *node; 2307 2308 printf("\nSorted summary for file %s\n", filename); 2309 printf("----------------------------------------------\n\n"); 2310 2311 if (RB_EMPTY_ROOT(root)) { 2312 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 2313 return; 2314 } 2315 2316 node = rb_first(root); 2317 while (node) { 2318 double percent, percent_max = 0.0; 2319 const char *color; 2320 char *path; 2321 int i; 2322 2323 al = rb_entry(node, struct annotation_line, rb_node); 2324 for (i = 0; i < al->data_nr; i++) { 2325 percent = al->data[i].percent_sum; 2326 color = get_percent_color(percent); 2327 color_fprintf(stdout, color, " %7.2f", percent); 2328 2329 if (percent > percent_max) 2330 percent_max = percent; 2331 } 2332 2333 path = al->path; 2334 color = get_percent_color(percent_max); 2335 color_fprintf(stdout, color, " %s\n", path); 2336 2337 node = rb_next(node); 2338 } 2339 } 2340 2341 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel) 2342 { 2343 struct annotation *notes = symbol__annotation(sym); 2344 struct sym_hist *h = annotation__histogram(notes, evsel->core.idx); 2345 u64 len = symbol__size(sym), offset; 2346 2347 for (offset = 0; offset < len; ++offset) 2348 if (h->addr[offset].nr_samples != 0) 2349 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 2350 sym->start + offset, h->addr[offset].nr_samples); 2351 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); 2352 } 2353 2354 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start) 2355 { 2356 char bf[32]; 2357 struct annotation_line *line; 2358 2359 list_for_each_entry_reverse(line, lines, node) { 2360 if (line->offset != -1) 2361 return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset); 2362 } 2363 2364 return 0; 2365 } 2366 2367 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel, 2368 struct annotation_options *opts) 2369 { 2370 struct map *map = ms->map; 2371 struct symbol *sym = ms->sym; 2372 struct dso *dso = map->dso; 2373 char *filename; 2374 const char *d_filename; 2375 const char *evsel_name = evsel__name(evsel); 2376 struct annotation *notes = symbol__annotation(sym); 2377 struct sym_hist *h = annotation__histogram(notes, evsel->core.idx); 2378 struct annotation_line *pos, *queue = NULL; 2379 u64 start = map__rip_2objdump(map, sym->start); 2380 int printed = 2, queue_len = 0, addr_fmt_width; 2381 int more = 0; 2382 bool context = opts->context; 2383 u64 len; 2384 int width = symbol_conf.show_total_period ? 12 : 8; 2385 int graph_dotted_len; 2386 char buf[512]; 2387 2388 filename = strdup(dso->long_name); 2389 if (!filename) 2390 return -ENOMEM; 2391 2392 if (opts->full_path) 2393 d_filename = filename; 2394 else 2395 d_filename = basename(filename); 2396 2397 len = symbol__size(sym); 2398 2399 if (evsel__is_group_event(evsel)) { 2400 width *= evsel->core.nr_members; 2401 evsel__group_desc(evsel, buf, sizeof(buf)); 2402 evsel_name = buf; 2403 } 2404 2405 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, " 2406 "percent: %s)\n", 2407 width, width, symbol_conf.show_total_period ? "Period" : 2408 symbol_conf.show_nr_samples ? "Samples" : "Percent", 2409 d_filename, evsel_name, h->nr_samples, 2410 percent_type_str(opts->percent_type)); 2411 2412 printf("%-*.*s----\n", 2413 graph_dotted_len, graph_dotted_len, graph_dotted_line); 2414 2415 if (verbose > 0) 2416 symbol__annotate_hits(sym, evsel); 2417 2418 addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); 2419 2420 list_for_each_entry(pos, ¬es->src->source, node) { 2421 int err; 2422 2423 if (context && queue == NULL) { 2424 queue = pos; 2425 queue_len = 0; 2426 } 2427 2428 err = annotation_line__print(pos, sym, start, evsel, len, 2429 opts->min_pcnt, printed, opts->max_lines, 2430 queue, addr_fmt_width, opts->percent_type); 2431 2432 switch (err) { 2433 case 0: 2434 ++printed; 2435 if (context) { 2436 printed += queue_len; 2437 queue = NULL; 2438 queue_len = 0; 2439 } 2440 break; 2441 case 1: 2442 /* filtered by max_lines */ 2443 ++more; 2444 break; 2445 case -1: 2446 default: 2447 /* 2448 * Filtered by min_pcnt or non IP lines when 2449 * context != 0 2450 */ 2451 if (!context) 2452 break; 2453 if (queue_len == context) 2454 queue = list_entry(queue->node.next, typeof(*queue), node); 2455 else 2456 ++queue_len; 2457 break; 2458 } 2459 } 2460 2461 free(filename); 2462 2463 return more; 2464 } 2465 2466 static void FILE__set_percent_color(void *fp __maybe_unused, 2467 double percent __maybe_unused, 2468 bool current __maybe_unused) 2469 { 2470 } 2471 2472 static int FILE__set_jumps_percent_color(void *fp __maybe_unused, 2473 int nr __maybe_unused, bool current __maybe_unused) 2474 { 2475 return 0; 2476 } 2477 2478 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused) 2479 { 2480 return 0; 2481 } 2482 2483 static void FILE__printf(void *fp, const char *fmt, ...) 2484 { 2485 va_list args; 2486 2487 va_start(args, fmt); 2488 vfprintf(fp, fmt, args); 2489 va_end(args); 2490 } 2491 2492 static void FILE__write_graph(void *fp, int graph) 2493 { 2494 const char *s; 2495 switch (graph) { 2496 2497 case DARROW_CHAR: s = "↓"; break; 2498 case UARROW_CHAR: s = "↑"; break; 2499 case LARROW_CHAR: s = "←"; break; 2500 case RARROW_CHAR: s = "→"; break; 2501 default: s = "?"; break; 2502 } 2503 2504 fputs(s, fp); 2505 } 2506 2507 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp, 2508 struct annotation_options *opts) 2509 { 2510 struct annotation *notes = symbol__annotation(sym); 2511 struct annotation_write_ops wops = { 2512 .first_line = true, 2513 .obj = fp, 2514 .set_color = FILE__set_color, 2515 .set_percent_color = FILE__set_percent_color, 2516 .set_jumps_percent_color = FILE__set_jumps_percent_color, 2517 .printf = FILE__printf, 2518 .write_graph = FILE__write_graph, 2519 }; 2520 struct annotation_line *al; 2521 2522 list_for_each_entry(al, ¬es->src->source, node) { 2523 if (annotation_line__filter(al, notes)) 2524 continue; 2525 annotation_line__write(al, notes, &wops, opts); 2526 fputc('\n', fp); 2527 wops.first_line = false; 2528 } 2529 2530 return 0; 2531 } 2532 2533 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel, 2534 struct annotation_options *opts) 2535 { 2536 const char *ev_name = evsel__name(evsel); 2537 char buf[1024]; 2538 char *filename; 2539 int err = -1; 2540 FILE *fp; 2541 2542 if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0) 2543 return -1; 2544 2545 fp = fopen(filename, "w"); 2546 if (fp == NULL) 2547 goto out_free_filename; 2548 2549 if (evsel__is_group_event(evsel)) { 2550 evsel__group_desc(evsel, buf, sizeof(buf)); 2551 ev_name = buf; 2552 } 2553 2554 fprintf(fp, "%s() %s\nEvent: %s\n\n", 2555 ms->sym->name, ms->map->dso->long_name, ev_name); 2556 symbol__annotate_fprintf2(ms->sym, fp, opts); 2557 2558 fclose(fp); 2559 err = 0; 2560 out_free_filename: 2561 free(filename); 2562 return err; 2563 } 2564 2565 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 2566 { 2567 struct annotation *notes = symbol__annotation(sym); 2568 struct sym_hist *h = annotation__histogram(notes, evidx); 2569 2570 memset(h, 0, notes->src->sizeof_sym_hist); 2571 } 2572 2573 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 2574 { 2575 struct annotation *notes = symbol__annotation(sym); 2576 struct sym_hist *h = annotation__histogram(notes, evidx); 2577 int len = symbol__size(sym), offset; 2578 2579 h->nr_samples = 0; 2580 for (offset = 0; offset < len; ++offset) { 2581 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; 2582 h->nr_samples += h->addr[offset].nr_samples; 2583 } 2584 } 2585 2586 void annotated_source__purge(struct annotated_source *as) 2587 { 2588 struct annotation_line *al, *n; 2589 2590 list_for_each_entry_safe(al, n, &as->source, node) { 2591 list_del_init(&al->node); 2592 disasm_line__free(disasm_line(al)); 2593 } 2594 } 2595 2596 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 2597 { 2598 size_t printed; 2599 2600 if (dl->al.offset == -1) 2601 return fprintf(fp, "%s\n", dl->al.line); 2602 2603 printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name); 2604 2605 if (dl->ops.raw[0] != '\0') { 2606 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 2607 dl->ops.raw); 2608 } 2609 2610 return printed + fprintf(fp, "\n"); 2611 } 2612 2613 size_t disasm__fprintf(struct list_head *head, FILE *fp) 2614 { 2615 struct disasm_line *pos; 2616 size_t printed = 0; 2617 2618 list_for_each_entry(pos, head, al.node) 2619 printed += disasm_line__fprintf(pos, fp); 2620 2621 return printed; 2622 } 2623 2624 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym) 2625 { 2626 if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) || 2627 !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 || 2628 dl->ops.target.offset >= (s64)symbol__size(sym)) 2629 return false; 2630 2631 return true; 2632 } 2633 2634 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym) 2635 { 2636 u64 offset, size = symbol__size(sym); 2637 2638 /* PLT symbols contain external offsets */ 2639 if (strstr(sym->name, "@plt")) 2640 return; 2641 2642 for (offset = 0; offset < size; ++offset) { 2643 struct annotation_line *al = notes->offsets[offset]; 2644 struct disasm_line *dl; 2645 2646 dl = disasm_line(al); 2647 2648 if (!disasm_line__is_valid_local_jump(dl, sym)) 2649 continue; 2650 2651 al = notes->offsets[dl->ops.target.offset]; 2652 2653 /* 2654 * FIXME: Oops, no jump target? Buggy disassembler? Or do we 2655 * have to adjust to the previous offset? 2656 */ 2657 if (al == NULL) 2658 continue; 2659 2660 if (++al->jump_sources > notes->max_jump_sources) 2661 notes->max_jump_sources = al->jump_sources; 2662 } 2663 } 2664 2665 void annotation__set_offsets(struct annotation *notes, s64 size) 2666 { 2667 struct annotation_line *al; 2668 2669 notes->max_line_len = 0; 2670 notes->nr_entries = 0; 2671 notes->nr_asm_entries = 0; 2672 2673 list_for_each_entry(al, ¬es->src->source, node) { 2674 size_t line_len = strlen(al->line); 2675 2676 if (notes->max_line_len < line_len) 2677 notes->max_line_len = line_len; 2678 al->idx = notes->nr_entries++; 2679 if (al->offset != -1) { 2680 al->idx_asm = notes->nr_asm_entries++; 2681 /* 2682 * FIXME: short term bandaid to cope with assembly 2683 * routines that comes with labels in the same column 2684 * as the address in objdump, sigh. 2685 * 2686 * E.g. copy_user_generic_unrolled 2687 */ 2688 if (al->offset < size) 2689 notes->offsets[al->offset] = al; 2690 } else 2691 al->idx_asm = -1; 2692 } 2693 } 2694 2695 static inline int width_jumps(int n) 2696 { 2697 if (n >= 100) 2698 return 5; 2699 if (n / 10) 2700 return 2; 2701 return 1; 2702 } 2703 2704 static int annotation__max_ins_name(struct annotation *notes) 2705 { 2706 int max_name = 0, len; 2707 struct annotation_line *al; 2708 2709 list_for_each_entry(al, ¬es->src->source, node) { 2710 if (al->offset == -1) 2711 continue; 2712 2713 len = strlen(disasm_line(al)->ins.name); 2714 if (max_name < len) 2715 max_name = len; 2716 } 2717 2718 return max_name; 2719 } 2720 2721 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym) 2722 { 2723 notes->widths.addr = notes->widths.target = 2724 notes->widths.min_addr = hex_width(symbol__size(sym)); 2725 notes->widths.max_addr = hex_width(sym->end); 2726 notes->widths.jumps = width_jumps(notes->max_jump_sources); 2727 notes->widths.max_ins_name = annotation__max_ins_name(notes); 2728 } 2729 2730 void annotation__update_column_widths(struct annotation *notes) 2731 { 2732 if (notes->options->use_offset) 2733 notes->widths.target = notes->widths.min_addr; 2734 else 2735 notes->widths.target = notes->widths.max_addr; 2736 2737 notes->widths.addr = notes->widths.target; 2738 2739 if (notes->options->show_nr_jumps) 2740 notes->widths.addr += notes->widths.jumps + 1; 2741 } 2742 2743 static void annotation__calc_lines(struct annotation *notes, struct map *map, 2744 struct rb_root *root, 2745 struct annotation_options *opts) 2746 { 2747 struct annotation_line *al; 2748 struct rb_root tmp_root = RB_ROOT; 2749 2750 list_for_each_entry(al, ¬es->src->source, node) { 2751 double percent_max = 0.0; 2752 int i; 2753 2754 for (i = 0; i < al->data_nr; i++) { 2755 double percent; 2756 2757 percent = annotation_data__percent(&al->data[i], 2758 opts->percent_type); 2759 2760 if (percent > percent_max) 2761 percent_max = percent; 2762 } 2763 2764 if (percent_max <= 0.5) 2765 continue; 2766 2767 al->path = get_srcline(map->dso, notes->start + al->offset, NULL, 2768 false, true, notes->start + al->offset); 2769 insert_source_line(&tmp_root, al, opts); 2770 } 2771 2772 resort_source_line(root, &tmp_root); 2773 } 2774 2775 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root, 2776 struct annotation_options *opts) 2777 { 2778 struct annotation *notes = symbol__annotation(ms->sym); 2779 2780 annotation__calc_lines(notes, ms->map, root, opts); 2781 } 2782 2783 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, 2784 struct annotation_options *opts) 2785 { 2786 struct dso *dso = ms->map->dso; 2787 struct symbol *sym = ms->sym; 2788 struct rb_root source_line = RB_ROOT; 2789 struct hists *hists = evsel__hists(evsel); 2790 char buf[1024]; 2791 int err; 2792 2793 err = symbol__annotate2(ms, evsel, opts, NULL); 2794 if (err) { 2795 char msg[BUFSIZ]; 2796 2797 dso->annotate_warned = true; 2798 symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); 2799 ui__error("Couldn't annotate %s:\n%s", sym->name, msg); 2800 return -1; 2801 } 2802 2803 if (opts->print_lines) { 2804 srcline_full_filename = opts->full_path; 2805 symbol__calc_lines(ms, &source_line, opts); 2806 print_summary(&source_line, dso->long_name); 2807 } 2808 2809 hists__scnprintf_title(hists, buf, sizeof(buf)); 2810 fprintf(stdout, "%s, [percent: %s]\n%s() %s\n", 2811 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name); 2812 symbol__annotate_fprintf2(sym, stdout, opts); 2813 2814 annotated_source__purge(symbol__annotation(sym)->src); 2815 2816 return 0; 2817 } 2818 2819 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, 2820 struct annotation_options *opts) 2821 { 2822 struct dso *dso = ms->map->dso; 2823 struct symbol *sym = ms->sym; 2824 struct rb_root source_line = RB_ROOT; 2825 int err; 2826 2827 err = symbol__annotate(ms, evsel, opts, NULL); 2828 if (err) { 2829 char msg[BUFSIZ]; 2830 2831 dso->annotate_warned = true; 2832 symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); 2833 ui__error("Couldn't annotate %s:\n%s", sym->name, msg); 2834 return -1; 2835 } 2836 2837 symbol__calc_percent(sym, evsel); 2838 2839 if (opts->print_lines) { 2840 srcline_full_filename = opts->full_path; 2841 symbol__calc_lines(ms, &source_line, opts); 2842 print_summary(&source_line, dso->long_name); 2843 } 2844 2845 symbol__annotate_printf(ms, evsel, opts); 2846 2847 annotated_source__purge(symbol__annotation(sym)->src); 2848 2849 return 0; 2850 } 2851 2852 bool ui__has_annotation(void) 2853 { 2854 return use_browser == 1 && perf_hpp_list.sym; 2855 } 2856 2857 2858 static double annotation_line__max_percent(struct annotation_line *al, 2859 struct annotation *notes, 2860 unsigned int percent_type) 2861 { 2862 double percent_max = 0.0; 2863 int i; 2864 2865 for (i = 0; i < notes->nr_events; i++) { 2866 double percent; 2867 2868 percent = annotation_data__percent(&al->data[i], 2869 percent_type); 2870 2871 if (percent > percent_max) 2872 percent_max = percent; 2873 } 2874 2875 return percent_max; 2876 } 2877 2878 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes, 2879 void *obj, char *bf, size_t size, 2880 void (*obj__printf)(void *obj, const char *fmt, ...), 2881 void (*obj__write_graph)(void *obj, int graph)) 2882 { 2883 if (dl->ins.ops && dl->ins.ops->scnprintf) { 2884 if (ins__is_jump(&dl->ins)) { 2885 bool fwd; 2886 2887 if (dl->ops.target.outside) 2888 goto call_like; 2889 fwd = dl->ops.target.offset > dl->al.offset; 2890 obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR); 2891 obj__printf(obj, " "); 2892 } else if (ins__is_call(&dl->ins)) { 2893 call_like: 2894 obj__write_graph(obj, RARROW_CHAR); 2895 obj__printf(obj, " "); 2896 } else if (ins__is_ret(&dl->ins)) { 2897 obj__write_graph(obj, LARROW_CHAR); 2898 obj__printf(obj, " "); 2899 } else { 2900 obj__printf(obj, " "); 2901 } 2902 } else { 2903 obj__printf(obj, " "); 2904 } 2905 2906 disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name); 2907 } 2908 2909 static void ipc_coverage_string(char *bf, int size, struct annotation *notes) 2910 { 2911 double ipc = 0.0, coverage = 0.0; 2912 2913 if (notes->hit_cycles) 2914 ipc = notes->hit_insn / ((double)notes->hit_cycles); 2915 2916 if (notes->total_insn) { 2917 coverage = notes->cover_insn * 100.0 / 2918 ((double)notes->total_insn); 2919 } 2920 2921 scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)", 2922 ipc, coverage); 2923 } 2924 2925 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes, 2926 bool first_line, bool current_entry, bool change_color, int width, 2927 void *obj, unsigned int percent_type, 2928 int (*obj__set_color)(void *obj, int color), 2929 void (*obj__set_percent_color)(void *obj, double percent, bool current), 2930 int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current), 2931 void (*obj__printf)(void *obj, const char *fmt, ...), 2932 void (*obj__write_graph)(void *obj, int graph)) 2933 2934 { 2935 double percent_max = annotation_line__max_percent(al, notes, percent_type); 2936 int pcnt_width = annotation__pcnt_width(notes), 2937 cycles_width = annotation__cycles_width(notes); 2938 bool show_title = false; 2939 char bf[256]; 2940 int printed; 2941 2942 if (first_line && (al->offset == -1 || percent_max == 0.0)) { 2943 if (notes->have_cycles) { 2944 if (al->ipc == 0.0 && al->cycles == 0) 2945 show_title = true; 2946 } else 2947 show_title = true; 2948 } 2949 2950 if (al->offset != -1 && percent_max != 0.0) { 2951 int i; 2952 2953 for (i = 0; i < notes->nr_events; i++) { 2954 double percent; 2955 2956 percent = annotation_data__percent(&al->data[i], percent_type); 2957 2958 obj__set_percent_color(obj, percent, current_entry); 2959 if (symbol_conf.show_total_period) { 2960 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period); 2961 } else if (symbol_conf.show_nr_samples) { 2962 obj__printf(obj, "%6" PRIu64 " ", 2963 al->data[i].he.nr_samples); 2964 } else { 2965 obj__printf(obj, "%6.2f ", percent); 2966 } 2967 } 2968 } else { 2969 obj__set_percent_color(obj, 0, current_entry); 2970 2971 if (!show_title) 2972 obj__printf(obj, "%-*s", pcnt_width, " "); 2973 else { 2974 obj__printf(obj, "%-*s", pcnt_width, 2975 symbol_conf.show_total_period ? "Period" : 2976 symbol_conf.show_nr_samples ? "Samples" : "Percent"); 2977 } 2978 } 2979 2980 if (notes->have_cycles) { 2981 if (al->ipc) 2982 obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc); 2983 else if (!show_title) 2984 obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " "); 2985 else 2986 obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC"); 2987 2988 if (!notes->options->show_minmax_cycle) { 2989 if (al->cycles) 2990 obj__printf(obj, "%*" PRIu64 " ", 2991 ANNOTATION__CYCLES_WIDTH - 1, al->cycles); 2992 else if (!show_title) 2993 obj__printf(obj, "%*s", 2994 ANNOTATION__CYCLES_WIDTH, " "); 2995 else 2996 obj__printf(obj, "%*s ", 2997 ANNOTATION__CYCLES_WIDTH - 1, 2998 "Cycle"); 2999 } else { 3000 if (al->cycles) { 3001 char str[32]; 3002 3003 scnprintf(str, sizeof(str), 3004 "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")", 3005 al->cycles, al->cycles_min, 3006 al->cycles_max); 3007 3008 obj__printf(obj, "%*s ", 3009 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 3010 str); 3011 } else if (!show_title) 3012 obj__printf(obj, "%*s", 3013 ANNOTATION__MINMAX_CYCLES_WIDTH, 3014 " "); 3015 else 3016 obj__printf(obj, "%*s ", 3017 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 3018 "Cycle(min/max)"); 3019 } 3020 3021 if (show_title && !*al->line) { 3022 ipc_coverage_string(bf, sizeof(bf), notes); 3023 obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf); 3024 } 3025 } 3026 3027 obj__printf(obj, " "); 3028 3029 if (!*al->line) 3030 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " "); 3031 else if (al->offset == -1) { 3032 if (al->line_nr && notes->options->show_linenr) 3033 printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr); 3034 else 3035 printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->widths.addr, " "); 3036 obj__printf(obj, bf); 3037 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line); 3038 } else { 3039 u64 addr = al->offset; 3040 int color = -1; 3041 3042 if (!notes->options->use_offset) 3043 addr += notes->start; 3044 3045 if (!notes->options->use_offset) { 3046 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr); 3047 } else { 3048 if (al->jump_sources && 3049 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) { 3050 if (notes->options->show_nr_jumps) { 3051 int prev; 3052 printed = scnprintf(bf, sizeof(bf), "%*d ", 3053 notes->widths.jumps, 3054 al->jump_sources); 3055 prev = obj__set_jumps_percent_color(obj, al->jump_sources, 3056 current_entry); 3057 obj__printf(obj, bf); 3058 obj__set_color(obj, prev); 3059 } 3060 print_addr: 3061 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ", 3062 notes->widths.target, addr); 3063 } else if (ins__is_call(&disasm_line(al)->ins) && 3064 notes->options->offset_level >= ANNOTATION__OFFSET_CALL) { 3065 goto print_addr; 3066 } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) { 3067 goto print_addr; 3068 } else { 3069 printed = scnprintf(bf, sizeof(bf), "%-*s ", 3070 notes->widths.addr, " "); 3071 } 3072 } 3073 3074 if (change_color) 3075 color = obj__set_color(obj, HE_COLORSET_ADDR); 3076 obj__printf(obj, bf); 3077 if (change_color) 3078 obj__set_color(obj, color); 3079 3080 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph); 3081 3082 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf); 3083 } 3084 3085 } 3086 3087 void annotation_line__write(struct annotation_line *al, struct annotation *notes, 3088 struct annotation_write_ops *wops, 3089 struct annotation_options *opts) 3090 { 3091 __annotation_line__write(al, notes, wops->first_line, wops->current_entry, 3092 wops->change_color, wops->width, wops->obj, 3093 opts->percent_type, 3094 wops->set_color, wops->set_percent_color, 3095 wops->set_jumps_percent_color, wops->printf, 3096 wops->write_graph); 3097 } 3098 3099 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel, 3100 struct annotation_options *options, struct arch **parch) 3101 { 3102 struct symbol *sym = ms->sym; 3103 struct annotation *notes = symbol__annotation(sym); 3104 size_t size = symbol__size(sym); 3105 int nr_pcnt = 1, err; 3106 3107 notes->offsets = zalloc(size * sizeof(struct annotation_line *)); 3108 if (notes->offsets == NULL) 3109 return ENOMEM; 3110 3111 if (evsel__is_group_event(evsel)) 3112 nr_pcnt = evsel->core.nr_members; 3113 3114 err = symbol__annotate(ms, evsel, options, parch); 3115 if (err) 3116 goto out_free_offsets; 3117 3118 notes->options = options; 3119 3120 symbol__calc_percent(sym, evsel); 3121 3122 annotation__set_offsets(notes, size); 3123 annotation__mark_jump_targets(notes, sym); 3124 annotation__compute_ipc(notes, size); 3125 annotation__init_column_widths(notes, sym); 3126 notes->nr_events = nr_pcnt; 3127 3128 annotation__update_column_widths(notes); 3129 sym->annotate2 = true; 3130 3131 return 0; 3132 3133 out_free_offsets: 3134 zfree(¬es->offsets); 3135 return err; 3136 } 3137 3138 static int annotation__config(const char *var, const char *value, void *data) 3139 { 3140 struct annotation_options *opt = data; 3141 3142 if (!strstarts(var, "annotate.")) 3143 return 0; 3144 3145 if (!strcmp(var, "annotate.offset_level")) { 3146 perf_config_u8(&opt->offset_level, "offset_level", value); 3147 3148 if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL) 3149 opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL; 3150 else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL) 3151 opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL; 3152 } else if (!strcmp(var, "annotate.hide_src_code")) { 3153 opt->hide_src_code = perf_config_bool("hide_src_code", value); 3154 } else if (!strcmp(var, "annotate.jump_arrows")) { 3155 opt->jump_arrows = perf_config_bool("jump_arrows", value); 3156 } else if (!strcmp(var, "annotate.show_linenr")) { 3157 opt->show_linenr = perf_config_bool("show_linenr", value); 3158 } else if (!strcmp(var, "annotate.show_nr_jumps")) { 3159 opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value); 3160 } else if (!strcmp(var, "annotate.show_nr_samples")) { 3161 symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples", 3162 value); 3163 } else if (!strcmp(var, "annotate.show_total_period")) { 3164 symbol_conf.show_total_period = perf_config_bool("show_total_period", 3165 value); 3166 } else if (!strcmp(var, "annotate.use_offset")) { 3167 opt->use_offset = perf_config_bool("use_offset", value); 3168 } else if (!strcmp(var, "annotate.disassembler_style")) { 3169 opt->disassembler_style = value; 3170 } else if (!strcmp(var, "annotate.demangle")) { 3171 symbol_conf.demangle = perf_config_bool("demangle", value); 3172 } else if (!strcmp(var, "annotate.demangle_kernel")) { 3173 symbol_conf.demangle_kernel = perf_config_bool("demangle_kernel", value); 3174 } else { 3175 pr_debug("%s variable unknown, ignoring...", var); 3176 } 3177 3178 return 0; 3179 } 3180 3181 void annotation_config__init(struct annotation_options *opt) 3182 { 3183 perf_config(annotation__config, opt); 3184 } 3185 3186 static unsigned int parse_percent_type(char *str1, char *str2) 3187 { 3188 unsigned int type = (unsigned int) -1; 3189 3190 if (!strcmp("period", str1)) { 3191 if (!strcmp("local", str2)) 3192 type = PERCENT_PERIOD_LOCAL; 3193 else if (!strcmp("global", str2)) 3194 type = PERCENT_PERIOD_GLOBAL; 3195 } 3196 3197 if (!strcmp("hits", str1)) { 3198 if (!strcmp("local", str2)) 3199 type = PERCENT_HITS_LOCAL; 3200 else if (!strcmp("global", str2)) 3201 type = PERCENT_HITS_GLOBAL; 3202 } 3203 3204 return type; 3205 } 3206 3207 int annotate_parse_percent_type(const struct option *opt, const char *_str, 3208 int unset __maybe_unused) 3209 { 3210 struct annotation_options *opts = opt->value; 3211 unsigned int type; 3212 char *str1, *str2; 3213 int err = -1; 3214 3215 str1 = strdup(_str); 3216 if (!str1) 3217 return -ENOMEM; 3218 3219 str2 = strchr(str1, '-'); 3220 if (!str2) 3221 goto out; 3222 3223 *str2++ = 0; 3224 3225 type = parse_percent_type(str1, str2); 3226 if (type == (unsigned int) -1) 3227 type = parse_percent_type(str2, str1); 3228 if (type != (unsigned int) -1) { 3229 opts->percent_type = type; 3230 err = 0; 3231 } 3232 3233 out: 3234 free(str1); 3235 return err; 3236 } 3237 3238 int annotate_check_args(struct annotation_options *args) 3239 { 3240 if (args->prefix_strip && !args->prefix) { 3241 pr_err("--prefix-strip requires --prefix\n"); 3242 return -1; 3243 } 3244 return 0; 3245 } 3246