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 .ins_is_fused = x86__ins_is_fused, 187 .objdump = { 188 .comment_char = '#', 189 }, 190 }, 191 { 192 .name = "powerpc", 193 .init = powerpc__annotate_init, 194 }, 195 { 196 .name = "s390", 197 .init = s390__annotate_init, 198 .objdump = { 199 .comment_char = '#', 200 }, 201 }, 202 { 203 .name = "sparc", 204 .init = sparc__annotate_init, 205 .objdump = { 206 .comment_char = '#', 207 }, 208 }, 209 }; 210 211 static void ins__delete(struct ins_operands *ops) 212 { 213 if (ops == NULL) 214 return; 215 zfree(&ops->source.raw); 216 zfree(&ops->source.name); 217 zfree(&ops->target.raw); 218 zfree(&ops->target.name); 219 } 220 221 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 222 struct ins_operands *ops, int max_ins_name) 223 { 224 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw); 225 } 226 227 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 228 struct ins_operands *ops, int max_ins_name) 229 { 230 if (ins->ops->scnprintf) 231 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name); 232 233 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 234 } 235 236 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2) 237 { 238 if (!arch || !arch->ins_is_fused) 239 return false; 240 241 return arch->ins_is_fused(arch, ins1, ins2); 242 } 243 244 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 245 { 246 char *endptr, *tok, *name; 247 struct map *map = ms->map; 248 struct addr_map_symbol target = { 249 .ms = { .map = map, }, 250 }; 251 252 ops->target.addr = strtoull(ops->raw, &endptr, 16); 253 254 name = strchr(endptr, '<'); 255 if (name == NULL) 256 goto indirect_call; 257 258 name++; 259 260 if (arch->objdump.skip_functions_char && 261 strchr(name, arch->objdump.skip_functions_char)) 262 return -1; 263 264 tok = strchr(name, '>'); 265 if (tok == NULL) 266 return -1; 267 268 *tok = '\0'; 269 ops->target.name = strdup(name); 270 *tok = '>'; 271 272 if (ops->target.name == NULL) 273 return -1; 274 find_target: 275 target.addr = map__objdump_2mem(map, ops->target.addr); 276 277 if (maps__find_ams(ms->maps, &target) == 0 && 278 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 279 ops->target.sym = target.ms.sym; 280 281 return 0; 282 283 indirect_call: 284 tok = strchr(endptr, '*'); 285 if (tok != NULL) { 286 endptr++; 287 288 /* Indirect call can use a non-rip register and offset: callq *0x8(%rbx). 289 * Do not parse such instruction. */ 290 if (strstr(endptr, "(%r") == NULL) 291 ops->target.addr = strtoull(endptr, NULL, 16); 292 } 293 goto find_target; 294 } 295 296 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 297 struct ins_operands *ops, int max_ins_name) 298 { 299 if (ops->target.sym) 300 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 301 302 if (ops->target.addr == 0) 303 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 304 305 if (ops->target.name) 306 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name); 307 308 return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr); 309 } 310 311 static struct ins_ops call_ops = { 312 .parse = call__parse, 313 .scnprintf = call__scnprintf, 314 }; 315 316 bool ins__is_call(const struct ins *ins) 317 { 318 return ins->ops == &call_ops || ins->ops == &s390_call_ops; 319 } 320 321 /* 322 * Prevents from matching commas in the comment section, e.g.: 323 * ffff200008446e70: b.cs ffff2000084470f4 <generic_exec_single+0x314> // b.hs, b.nlast 324 * 325 * and skip comma as part of function arguments, e.g.: 326 * 1d8b4ac <linemap_lookup(line_maps const*, unsigned int)+0xcc> 327 */ 328 static inline const char *validate_comma(const char *c, struct ins_operands *ops) 329 { 330 if (ops->raw_comment && c > ops->raw_comment) 331 return NULL; 332 333 if (ops->raw_func_start && c > ops->raw_func_start) 334 return NULL; 335 336 return c; 337 } 338 339 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 340 { 341 struct map *map = ms->map; 342 struct symbol *sym = ms->sym; 343 struct addr_map_symbol target = { 344 .ms = { .map = map, }, 345 }; 346 const char *c = strchr(ops->raw, ','); 347 u64 start, end; 348 349 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char); 350 ops->raw_func_start = strchr(ops->raw, '<'); 351 352 c = validate_comma(c, ops); 353 354 /* 355 * Examples of lines to parse for the _cpp_lex_token@@Base 356 * function: 357 * 358 * 1159e6c: jne 115aa32 <_cpp_lex_token@@Base+0xf92> 359 * 1159e8b: jne c469be <cpp_named_operator2name@@Base+0xa72> 360 * 361 * The first is a jump to an offset inside the same function, 362 * the second is to another function, i.e. that 0xa72 is an 363 * offset in the cpp_named_operator2name@@base function. 364 */ 365 /* 366 * skip over possible up to 2 operands to get to address, e.g.: 367 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> 368 */ 369 if (c++ != NULL) { 370 ops->target.addr = strtoull(c, NULL, 16); 371 if (!ops->target.addr) { 372 c = strchr(c, ','); 373 c = validate_comma(c, ops); 374 if (c++ != NULL) 375 ops->target.addr = strtoull(c, NULL, 16); 376 } 377 } else { 378 ops->target.addr = strtoull(ops->raw, NULL, 16); 379 } 380 381 target.addr = map__objdump_2mem(map, ops->target.addr); 382 start = map->unmap_ip(map, sym->start), 383 end = map->unmap_ip(map, sym->end); 384 385 ops->target.outside = target.addr < start || target.addr > end; 386 387 /* 388 * FIXME: things like this in _cpp_lex_token (gcc's cc1 program): 389 390 cpp_named_operator2name@@Base+0xa72 391 392 * Point to a place that is after the cpp_named_operator2name 393 * boundaries, i.e. in the ELF symbol table for cc1 394 * cpp_named_operator2name is marked as being 32-bytes long, but it in 395 * fact is much larger than that, so we seem to need a symbols__find() 396 * routine that looks for >= current->start and < next_symbol->start, 397 * possibly just for C++ objects? 398 * 399 * For now lets just make some progress by marking jumps to outside the 400 * current function as call like. 401 * 402 * Actual navigation will come next, with further understanding of how 403 * the symbol searching and disassembly should be done. 404 */ 405 if (maps__find_ams(ms->maps, &target) == 0 && 406 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 407 ops->target.sym = target.ms.sym; 408 409 if (!ops->target.outside) { 410 ops->target.offset = target.addr - start; 411 ops->target.offset_avail = true; 412 } else { 413 ops->target.offset_avail = false; 414 } 415 416 return 0; 417 } 418 419 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 420 struct ins_operands *ops, int max_ins_name) 421 { 422 const char *c; 423 424 if (!ops->target.addr || ops->target.offset < 0) 425 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 426 427 if (ops->target.outside && ops->target.sym != NULL) 428 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 429 430 c = strchr(ops->raw, ','); 431 c = validate_comma(c, ops); 432 433 if (c != NULL) { 434 const char *c2 = strchr(c + 1, ','); 435 436 c2 = validate_comma(c2, ops); 437 /* check for 3-op insn */ 438 if (c2 != NULL) 439 c = c2; 440 c++; 441 442 /* mirror arch objdump's space-after-comma style */ 443 if (*c == ' ') 444 c++; 445 } 446 447 return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name, 448 ins->name, c ? c - ops->raw : 0, ops->raw, 449 ops->target.offset); 450 } 451 452 static struct ins_ops jump_ops = { 453 .parse = jump__parse, 454 .scnprintf = jump__scnprintf, 455 }; 456 457 bool ins__is_jump(const struct ins *ins) 458 { 459 return ins->ops == &jump_ops; 460 } 461 462 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 463 { 464 char *endptr, *name, *t; 465 466 if (strstr(raw, "(%rip)") == NULL) 467 return 0; 468 469 *addrp = strtoull(comment, &endptr, 16); 470 if (endptr == comment) 471 return 0; 472 name = strchr(endptr, '<'); 473 if (name == NULL) 474 return -1; 475 476 name++; 477 478 t = strchr(name, '>'); 479 if (t == NULL) 480 return 0; 481 482 *t = '\0'; 483 *namep = strdup(name); 484 *t = '>'; 485 486 return 0; 487 } 488 489 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 490 { 491 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 492 if (ops->locked.ops == NULL) 493 return 0; 494 495 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0) 496 goto out_free_ops; 497 498 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name); 499 500 if (ops->locked.ins.ops == NULL) 501 goto out_free_ops; 502 503 if (ops->locked.ins.ops->parse && 504 ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0) 505 goto out_free_ops; 506 507 return 0; 508 509 out_free_ops: 510 zfree(&ops->locked.ops); 511 return 0; 512 } 513 514 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 515 struct ins_operands *ops, int max_ins_name) 516 { 517 int printed; 518 519 if (ops->locked.ins.ops == NULL) 520 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 521 522 printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name); 523 return printed + ins__scnprintf(&ops->locked.ins, bf + printed, 524 size - printed, ops->locked.ops, max_ins_name); 525 } 526 527 static void lock__delete(struct ins_operands *ops) 528 { 529 struct ins *ins = &ops->locked.ins; 530 531 if (ins->ops && ins->ops->free) 532 ins->ops->free(ops->locked.ops); 533 else 534 ins__delete(ops->locked.ops); 535 536 zfree(&ops->locked.ops); 537 zfree(&ops->target.raw); 538 zfree(&ops->target.name); 539 } 540 541 static struct ins_ops lock_ops = { 542 .free = lock__delete, 543 .parse = lock__parse, 544 .scnprintf = lock__scnprintf, 545 }; 546 547 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 548 { 549 char *s = strchr(ops->raw, ','), *target, *comment, prev; 550 551 if (s == NULL) 552 return -1; 553 554 *s = '\0'; 555 ops->source.raw = strdup(ops->raw); 556 *s = ','; 557 558 if (ops->source.raw == NULL) 559 return -1; 560 561 target = ++s; 562 comment = strchr(s, arch->objdump.comment_char); 563 564 if (comment != NULL) 565 s = comment - 1; 566 else 567 s = strchr(s, '\0') - 1; 568 569 while (s > target && isspace(s[0])) 570 --s; 571 s++; 572 prev = *s; 573 *s = '\0'; 574 575 ops->target.raw = strdup(target); 576 *s = prev; 577 578 if (ops->target.raw == NULL) 579 goto out_free_source; 580 581 if (comment == NULL) 582 return 0; 583 584 comment = skip_spaces(comment); 585 comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name); 586 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 587 588 return 0; 589 590 out_free_source: 591 zfree(&ops->source.raw); 592 return -1; 593 } 594 595 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 596 struct ins_operands *ops, int max_ins_name) 597 { 598 return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name, 599 ops->source.name ?: ops->source.raw, 600 ops->target.name ?: ops->target.raw); 601 } 602 603 static struct ins_ops mov_ops = { 604 .parse = mov__parse, 605 .scnprintf = mov__scnprintf, 606 }; 607 608 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 609 { 610 char *target, *comment, *s, prev; 611 612 target = s = ops->raw; 613 614 while (s[0] != '\0' && !isspace(s[0])) 615 ++s; 616 prev = *s; 617 *s = '\0'; 618 619 ops->target.raw = strdup(target); 620 *s = prev; 621 622 if (ops->target.raw == NULL) 623 return -1; 624 625 comment = strchr(s, arch->objdump.comment_char); 626 if (comment == NULL) 627 return 0; 628 629 comment = skip_spaces(comment); 630 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 631 632 return 0; 633 } 634 635 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 636 struct ins_operands *ops, int max_ins_name) 637 { 638 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, 639 ops->target.name ?: ops->target.raw); 640 } 641 642 static struct ins_ops dec_ops = { 643 .parse = dec__parse, 644 .scnprintf = dec__scnprintf, 645 }; 646 647 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 648 struct ins_operands *ops __maybe_unused, int max_ins_name) 649 { 650 return scnprintf(bf, size, "%-*s", max_ins_name, "nop"); 651 } 652 653 static struct ins_ops nop_ops = { 654 .scnprintf = nop__scnprintf, 655 }; 656 657 static struct ins_ops ret_ops = { 658 .scnprintf = ins__raw_scnprintf, 659 }; 660 661 bool ins__is_ret(const struct ins *ins) 662 { 663 return ins->ops == &ret_ops; 664 } 665 666 bool ins__is_lock(const struct ins *ins) 667 { 668 return ins->ops == &lock_ops; 669 } 670 671 static int ins__key_cmp(const void *name, const void *insp) 672 { 673 const struct ins *ins = insp; 674 675 return strcmp(name, ins->name); 676 } 677 678 static int ins__cmp(const void *a, const void *b) 679 { 680 const struct ins *ia = a; 681 const struct ins *ib = b; 682 683 return strcmp(ia->name, ib->name); 684 } 685 686 static void ins__sort(struct arch *arch) 687 { 688 const int nmemb = arch->nr_instructions; 689 690 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp); 691 } 692 693 static struct ins_ops *__ins__find(struct arch *arch, const char *name) 694 { 695 struct ins *ins; 696 const int nmemb = arch->nr_instructions; 697 698 if (!arch->sorted_instructions) { 699 ins__sort(arch); 700 arch->sorted_instructions = true; 701 } 702 703 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp); 704 return ins ? ins->ops : NULL; 705 } 706 707 static struct ins_ops *ins__find(struct arch *arch, const char *name) 708 { 709 struct ins_ops *ops = __ins__find(arch, name); 710 711 if (!ops && arch->associate_instruction_ops) 712 ops = arch->associate_instruction_ops(arch, name); 713 714 return ops; 715 } 716 717 static int arch__key_cmp(const void *name, const void *archp) 718 { 719 const struct arch *arch = archp; 720 721 return strcmp(name, arch->name); 722 } 723 724 static int arch__cmp(const void *a, const void *b) 725 { 726 const struct arch *aa = a; 727 const struct arch *ab = b; 728 729 return strcmp(aa->name, ab->name); 730 } 731 732 static void arch__sort(void) 733 { 734 const int nmemb = ARRAY_SIZE(architectures); 735 736 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); 737 } 738 739 static struct arch *arch__find(const char *name) 740 { 741 const int nmemb = ARRAY_SIZE(architectures); 742 static bool sorted; 743 744 if (!sorted) { 745 arch__sort(); 746 sorted = true; 747 } 748 749 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); 750 } 751 752 static struct annotated_source *annotated_source__new(void) 753 { 754 struct annotated_source *src = zalloc(sizeof(*src)); 755 756 if (src != NULL) 757 INIT_LIST_HEAD(&src->source); 758 759 return src; 760 } 761 762 static __maybe_unused void annotated_source__delete(struct annotated_source *src) 763 { 764 if (src == NULL) 765 return; 766 zfree(&src->histograms); 767 zfree(&src->cycles_hist); 768 free(src); 769 } 770 771 static int annotated_source__alloc_histograms(struct annotated_source *src, 772 size_t size, int nr_hists) 773 { 774 size_t sizeof_sym_hist; 775 776 /* 777 * Add buffer of one element for zero length symbol. 778 * When sample is taken from first instruction of 779 * zero length symbol, perf still resolves it and 780 * shows symbol name in perf report and allows to 781 * annotate it. 782 */ 783 if (size == 0) 784 size = 1; 785 786 /* Check for overflow when calculating sizeof_sym_hist */ 787 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) 788 return -1; 789 790 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); 791 792 /* Check for overflow in zalloc argument */ 793 if (sizeof_sym_hist > SIZE_MAX / nr_hists) 794 return -1; 795 796 src->sizeof_sym_hist = sizeof_sym_hist; 797 src->nr_histograms = nr_hists; 798 src->histograms = calloc(nr_hists, sizeof_sym_hist) ; 799 return src->histograms ? 0 : -1; 800 } 801 802 /* The cycles histogram is lazily allocated. */ 803 static int symbol__alloc_hist_cycles(struct symbol *sym) 804 { 805 struct annotation *notes = symbol__annotation(sym); 806 const size_t size = symbol__size(sym); 807 808 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 809 if (notes->src->cycles_hist == NULL) 810 return -1; 811 return 0; 812 } 813 814 void symbol__annotate_zero_histograms(struct symbol *sym) 815 { 816 struct annotation *notes = symbol__annotation(sym); 817 818 pthread_mutex_lock(¬es->lock); 819 if (notes->src != NULL) { 820 memset(notes->src->histograms, 0, 821 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 822 if (notes->src->cycles_hist) 823 memset(notes->src->cycles_hist, 0, 824 symbol__size(sym) * sizeof(struct cyc_hist)); 825 } 826 pthread_mutex_unlock(¬es->lock); 827 } 828 829 static int __symbol__account_cycles(struct cyc_hist *ch, 830 u64 start, 831 unsigned offset, unsigned cycles, 832 unsigned have_start) 833 { 834 /* 835 * For now we can only account one basic block per 836 * final jump. But multiple could be overlapping. 837 * Always account the longest one. So when 838 * a shorter one has been already seen throw it away. 839 * 840 * We separately always account the full cycles. 841 */ 842 ch[offset].num_aggr++; 843 ch[offset].cycles_aggr += cycles; 844 845 if (cycles > ch[offset].cycles_max) 846 ch[offset].cycles_max = cycles; 847 848 if (ch[offset].cycles_min) { 849 if (cycles && cycles < ch[offset].cycles_min) 850 ch[offset].cycles_min = cycles; 851 } else 852 ch[offset].cycles_min = cycles; 853 854 if (!have_start && ch[offset].have_start) 855 return 0; 856 if (ch[offset].num) { 857 if (have_start && (!ch[offset].have_start || 858 ch[offset].start > start)) { 859 ch[offset].have_start = 0; 860 ch[offset].cycles = 0; 861 ch[offset].num = 0; 862 if (ch[offset].reset < 0xffff) 863 ch[offset].reset++; 864 } else if (have_start && 865 ch[offset].start < start) 866 return 0; 867 } 868 869 if (ch[offset].num < NUM_SPARKS) 870 ch[offset].cycles_spark[ch[offset].num] = cycles; 871 872 ch[offset].have_start = have_start; 873 ch[offset].start = start; 874 ch[offset].cycles += cycles; 875 ch[offset].num++; 876 return 0; 877 } 878 879 static int __symbol__inc_addr_samples(struct map_symbol *ms, 880 struct annotated_source *src, int evidx, u64 addr, 881 struct perf_sample *sample) 882 { 883 struct symbol *sym = ms->sym; 884 unsigned offset; 885 struct sym_hist *h; 886 887 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr)); 888 889 if ((addr < sym->start || addr >= sym->end) && 890 (addr != sym->end || sym->start != sym->end)) { 891 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 892 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 893 return -ERANGE; 894 } 895 896 offset = addr - sym->start; 897 h = annotated_source__histogram(src, evidx); 898 if (h == NULL) { 899 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n", 900 __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC); 901 return -ENOMEM; 902 } 903 h->nr_samples++; 904 h->addr[offset].nr_samples++; 905 h->period += sample->period; 906 h->addr[offset].period += sample->period; 907 908 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 909 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", 910 sym->start, sym->name, addr, addr - sym->start, evidx, 911 h->addr[offset].nr_samples, h->addr[offset].period); 912 return 0; 913 } 914 915 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym) 916 { 917 struct annotation *notes = symbol__annotation(sym); 918 919 if (notes->src == NULL) { 920 notes->src = annotated_source__new(); 921 if (notes->src == NULL) 922 return NULL; 923 goto alloc_cycles_hist; 924 } 925 926 if (!notes->src->cycles_hist) { 927 alloc_cycles_hist: 928 symbol__alloc_hist_cycles(sym); 929 } 930 931 return notes->src->cycles_hist; 932 } 933 934 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists) 935 { 936 struct annotation *notes = symbol__annotation(sym); 937 938 if (notes->src == NULL) { 939 notes->src = annotated_source__new(); 940 if (notes->src == NULL) 941 return NULL; 942 goto alloc_histograms; 943 } 944 945 if (notes->src->histograms == NULL) { 946 alloc_histograms: 947 annotated_source__alloc_histograms(notes->src, symbol__size(sym), 948 nr_hists); 949 } 950 951 return notes->src; 952 } 953 954 static int symbol__inc_addr_samples(struct map_symbol *ms, 955 struct evsel *evsel, u64 addr, 956 struct perf_sample *sample) 957 { 958 struct symbol *sym = ms->sym; 959 struct annotated_source *src; 960 961 if (sym == NULL) 962 return 0; 963 src = symbol__hists(sym, evsel->evlist->core.nr_entries); 964 return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0; 965 } 966 967 static int symbol__account_cycles(u64 addr, u64 start, 968 struct symbol *sym, unsigned cycles) 969 { 970 struct cyc_hist *cycles_hist; 971 unsigned offset; 972 973 if (sym == NULL) 974 return 0; 975 cycles_hist = symbol__cycles_hist(sym); 976 if (cycles_hist == NULL) 977 return -ENOMEM; 978 if (addr < sym->start || addr >= sym->end) 979 return -ERANGE; 980 981 if (start) { 982 if (start < sym->start || start >= sym->end) 983 return -ERANGE; 984 if (start >= addr) 985 start = 0; 986 } 987 offset = addr - sym->start; 988 return __symbol__account_cycles(cycles_hist, 989 start ? start - sym->start : 0, 990 offset, cycles, 991 !!start); 992 } 993 994 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 995 struct addr_map_symbol *start, 996 unsigned cycles) 997 { 998 u64 saddr = 0; 999 int err; 1000 1001 if (!cycles) 1002 return 0; 1003 1004 /* 1005 * Only set start when IPC can be computed. We can only 1006 * compute it when the basic block is completely in a single 1007 * function. 1008 * Special case the case when the jump is elsewhere, but 1009 * it starts on the function start. 1010 */ 1011 if (start && 1012 (start->ms.sym == ams->ms.sym || 1013 (ams->ms.sym && 1014 start->addr == ams->ms.sym->start + ams->ms.map->start))) 1015 saddr = start->al_addr; 1016 if (saddr == 0) 1017 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 1018 ams->addr, 1019 start ? start->addr : 0, 1020 ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0, 1021 saddr); 1022 err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles); 1023 if (err) 1024 pr_debug2("account_cycles failed %d\n", err); 1025 return err; 1026 } 1027 1028 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end) 1029 { 1030 unsigned n_insn = 0; 1031 u64 offset; 1032 1033 for (offset = start; offset <= end; offset++) { 1034 if (notes->offsets[offset]) 1035 n_insn++; 1036 } 1037 return n_insn; 1038 } 1039 1040 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch) 1041 { 1042 unsigned n_insn; 1043 unsigned int cover_insn = 0; 1044 u64 offset; 1045 1046 n_insn = annotation__count_insn(notes, start, end); 1047 if (n_insn && ch->num && ch->cycles) { 1048 float ipc = n_insn / ((double)ch->cycles / (double)ch->num); 1049 1050 /* Hide data when there are too many overlaps. */ 1051 if (ch->reset >= 0x7fff) 1052 return; 1053 1054 for (offset = start; offset <= end; offset++) { 1055 struct annotation_line *al = notes->offsets[offset]; 1056 1057 if (al && al->ipc == 0.0) { 1058 al->ipc = ipc; 1059 cover_insn++; 1060 } 1061 } 1062 1063 if (cover_insn) { 1064 notes->hit_cycles += ch->cycles; 1065 notes->hit_insn += n_insn * ch->num; 1066 notes->cover_insn += cover_insn; 1067 } 1068 } 1069 } 1070 1071 void annotation__compute_ipc(struct annotation *notes, size_t size) 1072 { 1073 s64 offset; 1074 1075 if (!notes->src || !notes->src->cycles_hist) 1076 return; 1077 1078 notes->total_insn = annotation__count_insn(notes, 0, size - 1); 1079 notes->hit_cycles = 0; 1080 notes->hit_insn = 0; 1081 notes->cover_insn = 0; 1082 1083 pthread_mutex_lock(¬es->lock); 1084 for (offset = size - 1; offset >= 0; --offset) { 1085 struct cyc_hist *ch; 1086 1087 ch = ¬es->src->cycles_hist[offset]; 1088 if (ch && ch->cycles) { 1089 struct annotation_line *al; 1090 1091 if (ch->have_start) 1092 annotation__count_and_fill(notes, ch->start, offset, ch); 1093 al = notes->offsets[offset]; 1094 if (al && ch->num_aggr) { 1095 al->cycles = ch->cycles_aggr / ch->num_aggr; 1096 al->cycles_max = ch->cycles_max; 1097 al->cycles_min = ch->cycles_min; 1098 } 1099 notes->have_cycles = true; 1100 } 1101 } 1102 pthread_mutex_unlock(¬es->lock); 1103 } 1104 1105 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 1106 struct evsel *evsel) 1107 { 1108 return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample); 1109 } 1110 1111 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 1112 struct evsel *evsel, u64 ip) 1113 { 1114 return symbol__inc_addr_samples(&he->ms, evsel, ip, sample); 1115 } 1116 1117 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms) 1118 { 1119 dl->ins.ops = ins__find(arch, dl->ins.name); 1120 1121 if (!dl->ins.ops) 1122 return; 1123 1124 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0) 1125 dl->ins.ops = NULL; 1126 } 1127 1128 static int disasm_line__parse(char *line, const char **namep, char **rawp) 1129 { 1130 char tmp, *name = skip_spaces(line); 1131 1132 if (name[0] == '\0') 1133 return -1; 1134 1135 *rawp = name + 1; 1136 1137 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 1138 ++*rawp; 1139 1140 tmp = (*rawp)[0]; 1141 (*rawp)[0] = '\0'; 1142 *namep = strdup(name); 1143 1144 if (*namep == NULL) 1145 goto out; 1146 1147 (*rawp)[0] = tmp; 1148 *rawp = strim(*rawp); 1149 1150 return 0; 1151 1152 out: 1153 return -1; 1154 } 1155 1156 struct annotate_args { 1157 struct arch *arch; 1158 struct map_symbol ms; 1159 struct evsel *evsel; 1160 struct annotation_options *options; 1161 s64 offset; 1162 char *line; 1163 int line_nr; 1164 char *fileloc; 1165 }; 1166 1167 static void annotation_line__init(struct annotation_line *al, 1168 struct annotate_args *args, 1169 int nr) 1170 { 1171 al->offset = args->offset; 1172 al->line = strdup(args->line); 1173 al->line_nr = args->line_nr; 1174 al->fileloc = args->fileloc; 1175 al->data_nr = nr; 1176 } 1177 1178 static void annotation_line__exit(struct annotation_line *al) 1179 { 1180 free_srcline(al->path); 1181 zfree(&al->line); 1182 } 1183 1184 static size_t disasm_line_size(int nr) 1185 { 1186 struct annotation_line *al; 1187 1188 return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr)); 1189 } 1190 1191 /* 1192 * Allocating the disasm annotation line data with 1193 * following structure: 1194 * 1195 * ------------------------------------------- 1196 * struct disasm_line | struct annotation_line 1197 * ------------------------------------------- 1198 * 1199 * We have 'struct annotation_line' member as last member 1200 * of 'struct disasm_line' to have an easy access. 1201 */ 1202 static struct disasm_line *disasm_line__new(struct annotate_args *args) 1203 { 1204 struct disasm_line *dl = NULL; 1205 int nr = 1; 1206 1207 if (evsel__is_group_event(args->evsel)) 1208 nr = args->evsel->core.nr_members; 1209 1210 dl = zalloc(disasm_line_size(nr)); 1211 if (!dl) 1212 return NULL; 1213 1214 annotation_line__init(&dl->al, args, nr); 1215 if (dl->al.line == NULL) 1216 goto out_delete; 1217 1218 if (args->offset != -1) { 1219 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0) 1220 goto out_free_line; 1221 1222 disasm_line__init_ins(dl, args->arch, &args->ms); 1223 } 1224 1225 return dl; 1226 1227 out_free_line: 1228 zfree(&dl->al.line); 1229 out_delete: 1230 free(dl); 1231 return NULL; 1232 } 1233 1234 void disasm_line__free(struct disasm_line *dl) 1235 { 1236 if (dl->ins.ops && dl->ins.ops->free) 1237 dl->ins.ops->free(&dl->ops); 1238 else 1239 ins__delete(&dl->ops); 1240 zfree(&dl->ins.name); 1241 annotation_line__exit(&dl->al); 1242 free(dl); 1243 } 1244 1245 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name) 1246 { 1247 if (raw || !dl->ins.ops) 1248 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw); 1249 1250 return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name); 1251 } 1252 1253 static void annotation_line__add(struct annotation_line *al, struct list_head *head) 1254 { 1255 list_add_tail(&al->node, head); 1256 } 1257 1258 struct annotation_line * 1259 annotation_line__next(struct annotation_line *pos, struct list_head *head) 1260 { 1261 list_for_each_entry_continue(pos, head, node) 1262 if (pos->offset >= 0) 1263 return pos; 1264 1265 return NULL; 1266 } 1267 1268 static const char *annotate__address_color(struct block_range *br) 1269 { 1270 double cov = block_range__coverage(br); 1271 1272 if (cov >= 0) { 1273 /* mark red for >75% coverage */ 1274 if (cov > 0.75) 1275 return PERF_COLOR_RED; 1276 1277 /* mark dull for <1% coverage */ 1278 if (cov < 0.01) 1279 return PERF_COLOR_NORMAL; 1280 } 1281 1282 return PERF_COLOR_MAGENTA; 1283 } 1284 1285 static const char *annotate__asm_color(struct block_range *br) 1286 { 1287 double cov = block_range__coverage(br); 1288 1289 if (cov >= 0) { 1290 /* mark dull for <1% coverage */ 1291 if (cov < 0.01) 1292 return PERF_COLOR_NORMAL; 1293 } 1294 1295 return PERF_COLOR_BLUE; 1296 } 1297 1298 static void annotate__branch_printf(struct block_range *br, u64 addr) 1299 { 1300 bool emit_comment = true; 1301 1302 if (!br) 1303 return; 1304 1305 #if 1 1306 if (br->is_target && br->start == addr) { 1307 struct block_range *branch = br; 1308 double p; 1309 1310 /* 1311 * Find matching branch to our target. 1312 */ 1313 while (!branch->is_branch) 1314 branch = block_range__next(branch); 1315 1316 p = 100 *(double)br->entry / branch->coverage; 1317 1318 if (p > 0.1) { 1319 if (emit_comment) { 1320 emit_comment = false; 1321 printf("\t#"); 1322 } 1323 1324 /* 1325 * The percentage of coverage joined at this target in relation 1326 * to the next branch. 1327 */ 1328 printf(" +%.2f%%", p); 1329 } 1330 } 1331 #endif 1332 if (br->is_branch && br->end == addr) { 1333 double p = 100*(double)br->taken / br->coverage; 1334 1335 if (p > 0.1) { 1336 if (emit_comment) { 1337 emit_comment = false; 1338 printf("\t#"); 1339 } 1340 1341 /* 1342 * The percentage of coverage leaving at this branch, and 1343 * its prediction ratio. 1344 */ 1345 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 1346 } 1347 } 1348 } 1349 1350 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width) 1351 { 1352 s64 offset = dl->al.offset; 1353 const u64 addr = start + offset; 1354 struct block_range *br; 1355 1356 br = block_range__find(addr); 1357 color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr); 1358 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line); 1359 annotate__branch_printf(br, addr); 1360 return 0; 1361 } 1362 1363 static int 1364 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, 1365 struct evsel *evsel, u64 len, int min_pcnt, int printed, 1366 int max_lines, struct annotation_line *queue, int addr_fmt_width, 1367 int percent_type) 1368 { 1369 struct disasm_line *dl = container_of(al, struct disasm_line, al); 1370 static const char *prev_line; 1371 1372 if (al->offset != -1) { 1373 double max_percent = 0.0; 1374 int i, nr_percent = 1; 1375 const char *color; 1376 struct annotation *notes = symbol__annotation(sym); 1377 1378 for (i = 0; i < al->data_nr; i++) { 1379 double percent; 1380 1381 percent = annotation_data__percent(&al->data[i], 1382 percent_type); 1383 1384 if (percent > max_percent) 1385 max_percent = percent; 1386 } 1387 1388 if (al->data_nr > nr_percent) 1389 nr_percent = al->data_nr; 1390 1391 if (max_percent < min_pcnt) 1392 return -1; 1393 1394 if (max_lines && printed >= max_lines) 1395 return 1; 1396 1397 if (queue != NULL) { 1398 list_for_each_entry_from(queue, ¬es->src->source, node) { 1399 if (queue == al) 1400 break; 1401 annotation_line__print(queue, sym, start, evsel, len, 1402 0, 0, 1, NULL, addr_fmt_width, 1403 percent_type); 1404 } 1405 } 1406 1407 color = get_percent_color(max_percent); 1408 1409 for (i = 0; i < nr_percent; i++) { 1410 struct annotation_data *data = &al->data[i]; 1411 double percent; 1412 1413 percent = annotation_data__percent(data, percent_type); 1414 color = get_percent_color(percent); 1415 1416 if (symbol_conf.show_total_period) 1417 color_fprintf(stdout, color, " %11" PRIu64, 1418 data->he.period); 1419 else if (symbol_conf.show_nr_samples) 1420 color_fprintf(stdout, color, " %7" PRIu64, 1421 data->he.nr_samples); 1422 else 1423 color_fprintf(stdout, color, " %7.2f", percent); 1424 } 1425 1426 printf(" : "); 1427 1428 disasm_line__print(dl, start, addr_fmt_width); 1429 1430 /* 1431 * Also color the filename and line if needed, with 1432 * the same color than the percentage. Don't print it 1433 * twice for close colored addr with the same filename:line 1434 */ 1435 if (al->path) { 1436 if (!prev_line || strcmp(prev_line, al->path)) { 1437 color_fprintf(stdout, color, " // %s", al->path); 1438 prev_line = al->path; 1439 } 1440 } 1441 1442 printf("\n"); 1443 } else if (max_lines && printed >= max_lines) 1444 return 1; 1445 else { 1446 int width = symbol_conf.show_total_period ? 12 : 8; 1447 1448 if (queue) 1449 return -1; 1450 1451 if (evsel__is_group_event(evsel)) 1452 width *= evsel->core.nr_members; 1453 1454 if (!*al->line) 1455 printf(" %*s:\n", width, " "); 1456 else 1457 printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line); 1458 } 1459 1460 return 0; 1461 } 1462 1463 /* 1464 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1465 * which looks like following 1466 * 1467 * 0000000000415500 <_init>: 1468 * 415500: sub $0x8,%rsp 1469 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1470 * 41550b: test %rax,%rax 1471 * 41550e: je 415515 <_init+0x15> 1472 * 415510: callq 416e70 <__gmon_start__@plt> 1473 * 415515: add $0x8,%rsp 1474 * 415519: retq 1475 * 1476 * it will be parsed and saved into struct disasm_line as 1477 * <offset> <name> <ops.raw> 1478 * 1479 * The offset will be a relative offset from the start of the symbol and -1 1480 * means that it's not a disassembly line so should be treated differently. 1481 * The ops.raw part will be parsed further according to type of the instruction. 1482 */ 1483 static int symbol__parse_objdump_line(struct symbol *sym, 1484 struct annotate_args *args, 1485 char *parsed_line, int *line_nr, char **fileloc) 1486 { 1487 struct map *map = args->ms.map; 1488 struct annotation *notes = symbol__annotation(sym); 1489 struct disasm_line *dl; 1490 char *tmp; 1491 s64 line_ip, offset = -1; 1492 regmatch_t match[2]; 1493 1494 /* /filename:linenr ? Save line number and ignore. */ 1495 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { 1496 *line_nr = atoi(parsed_line + match[1].rm_so); 1497 *fileloc = strdup(parsed_line); 1498 return 0; 1499 } 1500 1501 /* Process hex address followed by ':'. */ 1502 line_ip = strtoull(parsed_line, &tmp, 16); 1503 if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') { 1504 u64 start = map__rip_2objdump(map, sym->start), 1505 end = map__rip_2objdump(map, sym->end); 1506 1507 offset = line_ip - start; 1508 if ((u64)line_ip < start || (u64)line_ip >= end) 1509 offset = -1; 1510 else 1511 parsed_line = tmp + 1; 1512 } 1513 1514 args->offset = offset; 1515 args->line = parsed_line; 1516 args->line_nr = *line_nr; 1517 args->fileloc = *fileloc; 1518 args->ms.sym = sym; 1519 1520 dl = disasm_line__new(args); 1521 (*line_nr)++; 1522 1523 if (dl == NULL) 1524 return -1; 1525 1526 if (!disasm_line__has_local_offset(dl)) { 1527 dl->ops.target.offset = dl->ops.target.addr - 1528 map__rip_2objdump(map, sym->start); 1529 dl->ops.target.offset_avail = true; 1530 } 1531 1532 /* kcore has no symbols, so add the call target symbol */ 1533 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) { 1534 struct addr_map_symbol target = { 1535 .addr = dl->ops.target.addr, 1536 .ms = { .map = map, }, 1537 }; 1538 1539 if (!maps__find_ams(args->ms.maps, &target) && 1540 target.ms.sym->start == target.al_addr) 1541 dl->ops.target.sym = target.ms.sym; 1542 } 1543 1544 annotation_line__add(&dl->al, ¬es->src->source); 1545 1546 return 0; 1547 } 1548 1549 static __attribute__((constructor)) void symbol__init_regexpr(void) 1550 { 1551 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1552 } 1553 1554 static void delete_last_nop(struct symbol *sym) 1555 { 1556 struct annotation *notes = symbol__annotation(sym); 1557 struct list_head *list = ¬es->src->source; 1558 struct disasm_line *dl; 1559 1560 while (!list_empty(list)) { 1561 dl = list_entry(list->prev, struct disasm_line, al.node); 1562 1563 if (dl->ins.ops) { 1564 if (dl->ins.ops != &nop_ops) 1565 return; 1566 } else { 1567 if (!strstr(dl->al.line, " nop ") && 1568 !strstr(dl->al.line, " nopl ") && 1569 !strstr(dl->al.line, " nopw ")) 1570 return; 1571 } 1572 1573 list_del_init(&dl->al.node); 1574 disasm_line__free(dl); 1575 } 1576 } 1577 1578 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen) 1579 { 1580 struct dso *dso = ms->map->dso; 1581 1582 BUG_ON(buflen == 0); 1583 1584 if (errnum >= 0) { 1585 str_error_r(errnum, buf, buflen); 1586 return 0; 1587 } 1588 1589 switch (errnum) { 1590 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1591 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1592 char *build_id_msg = NULL; 1593 1594 if (dso->has_build_id) { 1595 build_id__sprintf(&dso->bid, bf + 15); 1596 build_id_msg = bf; 1597 } 1598 scnprintf(buf, buflen, 1599 "No vmlinux file%s\nwas found in the path.\n\n" 1600 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1601 "Please use:\n\n" 1602 " perf buildid-cache -vu vmlinux\n\n" 1603 "or:\n\n" 1604 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1605 } 1606 break; 1607 case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF: 1608 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation"); 1609 break; 1610 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP: 1611 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions."); 1612 break; 1613 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING: 1614 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization."); 1615 break; 1616 case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE: 1617 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name); 1618 break; 1619 case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF: 1620 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.", 1621 dso->long_name); 1622 break; 1623 default: 1624 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1625 break; 1626 } 1627 1628 return 0; 1629 } 1630 1631 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1632 { 1633 char linkname[PATH_MAX]; 1634 char *build_id_filename; 1635 char *build_id_path = NULL; 1636 char *pos; 1637 int len; 1638 1639 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1640 !dso__is_kcore(dso)) 1641 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1642 1643 build_id_filename = dso__build_id_filename(dso, NULL, 0, false); 1644 if (build_id_filename) { 1645 __symbol__join_symfs(filename, filename_size, build_id_filename); 1646 free(build_id_filename); 1647 } else { 1648 if (dso->has_build_id) 1649 return ENOMEM; 1650 goto fallback; 1651 } 1652 1653 build_id_path = strdup(filename); 1654 if (!build_id_path) 1655 return ENOMEM; 1656 1657 /* 1658 * old style build-id cache has name of XX/XXXXXXX.. while 1659 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}. 1660 * extract the build-id part of dirname in the new style only. 1661 */ 1662 pos = strrchr(build_id_path, '/'); 1663 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2) 1664 dirname(build_id_path); 1665 1666 if (dso__is_kcore(dso)) 1667 goto fallback; 1668 1669 len = readlink(build_id_path, linkname, sizeof(linkname) - 1); 1670 if (len < 0) 1671 goto fallback; 1672 1673 linkname[len] = '\0'; 1674 if (strstr(linkname, DSO__NAME_KALLSYMS) || 1675 access(filename, R_OK)) { 1676 fallback: 1677 /* 1678 * If we don't have build-ids or the build-id file isn't in the 1679 * cache, or is just a kallsyms file, well, lets hope that this 1680 * DSO is the same as when 'perf record' ran. 1681 */ 1682 __symbol__join_symfs(filename, filename_size, dso->long_name); 1683 } 1684 1685 free(build_id_path); 1686 return 0; 1687 } 1688 1689 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1690 #define PACKAGE "perf" 1691 #include <bfd.h> 1692 #include <dis-asm.h> 1693 #include <bpf/bpf.h> 1694 #include <bpf/btf.h> 1695 #include <bpf/libbpf.h> 1696 #include <linux/btf.h> 1697 1698 static int symbol__disassemble_bpf(struct symbol *sym, 1699 struct annotate_args *args) 1700 { 1701 struct annotation *notes = symbol__annotation(sym); 1702 struct annotation_options *opts = args->options; 1703 struct bpf_prog_info_linear *info_linear; 1704 struct bpf_prog_linfo *prog_linfo = NULL; 1705 struct bpf_prog_info_node *info_node; 1706 int len = sym->end - sym->start; 1707 disassembler_ftype disassemble; 1708 struct map *map = args->ms.map; 1709 struct disassemble_info info; 1710 struct dso *dso = map->dso; 1711 int pc = 0, count, sub_id; 1712 struct btf *btf = NULL; 1713 char tpath[PATH_MAX]; 1714 size_t buf_size; 1715 int nr_skip = 0; 1716 char *buf; 1717 bfd *bfdf; 1718 int ret; 1719 FILE *s; 1720 1721 if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO) 1722 return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE; 1723 1724 pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__, 1725 sym->name, sym->start, sym->end - sym->start); 1726 1727 memset(tpath, 0, sizeof(tpath)); 1728 perf_exe(tpath, sizeof(tpath)); 1729 1730 bfdf = bfd_openr(tpath, NULL); 1731 assert(bfdf); 1732 assert(bfd_check_format(bfdf, bfd_object)); 1733 1734 s = open_memstream(&buf, &buf_size); 1735 if (!s) { 1736 ret = errno; 1737 goto out; 1738 } 1739 init_disassemble_info(&info, s, 1740 (fprintf_ftype) fprintf); 1741 1742 info.arch = bfd_get_arch(bfdf); 1743 info.mach = bfd_get_mach(bfdf); 1744 1745 info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env, 1746 dso->bpf_prog.id); 1747 if (!info_node) { 1748 ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF; 1749 goto out; 1750 } 1751 info_linear = info_node->info_linear; 1752 sub_id = dso->bpf_prog.sub_id; 1753 1754 info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns); 1755 info.buffer_length = info_linear->info.jited_prog_len; 1756 1757 if (info_linear->info.nr_line_info) 1758 prog_linfo = bpf_prog_linfo__new(&info_linear->info); 1759 1760 if (info_linear->info.btf_id) { 1761 struct btf_node *node; 1762 1763 node = perf_env__find_btf(dso->bpf_prog.env, 1764 info_linear->info.btf_id); 1765 if (node) 1766 btf = btf__new((__u8 *)(node->data), 1767 node->data_size); 1768 } 1769 1770 disassemble_init_for_target(&info); 1771 1772 #ifdef DISASM_FOUR_ARGS_SIGNATURE 1773 disassemble = disassembler(info.arch, 1774 bfd_big_endian(bfdf), 1775 info.mach, 1776 bfdf); 1777 #else 1778 disassemble = disassembler(bfdf); 1779 #endif 1780 assert(disassemble); 1781 1782 fflush(s); 1783 do { 1784 const struct bpf_line_info *linfo = NULL; 1785 struct disasm_line *dl; 1786 size_t prev_buf_size; 1787 const char *srcline; 1788 u64 addr; 1789 1790 addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id]; 1791 count = disassemble(pc, &info); 1792 1793 if (prog_linfo) 1794 linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo, 1795 addr, sub_id, 1796 nr_skip); 1797 1798 if (linfo && btf) { 1799 srcline = btf__name_by_offset(btf, linfo->line_off); 1800 nr_skip++; 1801 } else 1802 srcline = NULL; 1803 1804 fprintf(s, "\n"); 1805 prev_buf_size = buf_size; 1806 fflush(s); 1807 1808 if (!opts->hide_src_code && srcline) { 1809 args->offset = -1; 1810 args->line = strdup(srcline); 1811 args->line_nr = 0; 1812 args->fileloc = NULL; 1813 args->ms.sym = sym; 1814 dl = disasm_line__new(args); 1815 if (dl) { 1816 annotation_line__add(&dl->al, 1817 ¬es->src->source); 1818 } 1819 } 1820 1821 args->offset = pc; 1822 args->line = buf + prev_buf_size; 1823 args->line_nr = 0; 1824 args->fileloc = NULL; 1825 args->ms.sym = sym; 1826 dl = disasm_line__new(args); 1827 if (dl) 1828 annotation_line__add(&dl->al, ¬es->src->source); 1829 1830 pc += count; 1831 } while (count > 0 && pc < len); 1832 1833 ret = 0; 1834 out: 1835 free(prog_linfo); 1836 btf__free(btf); 1837 fclose(s); 1838 bfd_close(bfdf); 1839 return ret; 1840 } 1841 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1842 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused, 1843 struct annotate_args *args __maybe_unused) 1844 { 1845 return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF; 1846 } 1847 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1848 1849 static int 1850 symbol__disassemble_bpf_image(struct symbol *sym, 1851 struct annotate_args *args) 1852 { 1853 struct annotation *notes = symbol__annotation(sym); 1854 struct disasm_line *dl; 1855 1856 args->offset = -1; 1857 args->line = strdup("to be implemented"); 1858 args->line_nr = 0; 1859 args->fileloc = NULL; 1860 dl = disasm_line__new(args); 1861 if (dl) 1862 annotation_line__add(&dl->al, ¬es->src->source); 1863 1864 free(args->line); 1865 return 0; 1866 } 1867 1868 /* 1869 * Possibly create a new version of line with tabs expanded. Returns the 1870 * existing or new line, storage is updated if a new line is allocated. If 1871 * allocation fails then NULL is returned. 1872 */ 1873 static char *expand_tabs(char *line, char **storage, size_t *storage_len) 1874 { 1875 size_t i, src, dst, len, new_storage_len, num_tabs; 1876 char *new_line; 1877 size_t line_len = strlen(line); 1878 1879 for (num_tabs = 0, i = 0; i < line_len; i++) 1880 if (line[i] == '\t') 1881 num_tabs++; 1882 1883 if (num_tabs == 0) 1884 return line; 1885 1886 /* 1887 * Space for the line and '\0', less the leading and trailing 1888 * spaces. Each tab may introduce 7 additional spaces. 1889 */ 1890 new_storage_len = line_len + 1 + (num_tabs * 7); 1891 1892 new_line = malloc(new_storage_len); 1893 if (new_line == NULL) { 1894 pr_err("Failure allocating memory for tab expansion\n"); 1895 return NULL; 1896 } 1897 1898 /* 1899 * Copy regions starting at src and expand tabs. If there are two 1900 * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces 1901 * are inserted. 1902 */ 1903 for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) { 1904 if (line[i] == '\t') { 1905 len = i - src; 1906 memcpy(&new_line[dst], &line[src], len); 1907 dst += len; 1908 new_line[dst++] = ' '; 1909 while (dst % 8 != 0) 1910 new_line[dst++] = ' '; 1911 src = i + 1; 1912 num_tabs--; 1913 } 1914 } 1915 1916 /* Expand the last region. */ 1917 len = line_len - src; 1918 memcpy(&new_line[dst], &line[src], len); 1919 dst += len; 1920 new_line[dst] = '\0'; 1921 1922 free(*storage); 1923 *storage = new_line; 1924 *storage_len = new_storage_len; 1925 return new_line; 1926 1927 } 1928 1929 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args) 1930 { 1931 struct annotation_options *opts = args->options; 1932 struct map *map = args->ms.map; 1933 struct dso *dso = map->dso; 1934 char *command; 1935 FILE *file; 1936 char symfs_filename[PATH_MAX]; 1937 struct kcore_extract kce; 1938 bool delete_extract = false; 1939 bool decomp = false; 1940 int lineno = 0; 1941 char *fileloc = NULL; 1942 int nline; 1943 char *line; 1944 size_t line_len; 1945 const char *objdump_argv[] = { 1946 "/bin/sh", 1947 "-c", 1948 NULL, /* Will be the objdump command to run. */ 1949 "--", 1950 NULL, /* Will be the symfs path. */ 1951 NULL, 1952 }; 1953 struct child_process objdump_process; 1954 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1955 1956 if (err) 1957 return err; 1958 1959 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1960 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1961 map->unmap_ip(map, sym->end)); 1962 1963 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1964 dso, dso->long_name, sym, sym->name); 1965 1966 if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) { 1967 return symbol__disassemble_bpf(sym, args); 1968 } else if (dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE) { 1969 return symbol__disassemble_bpf_image(sym, args); 1970 } else if (dso__is_kcore(dso)) { 1971 kce.kcore_filename = symfs_filename; 1972 kce.addr = map__rip_2objdump(map, sym->start); 1973 kce.offs = sym->start; 1974 kce.len = sym->end - sym->start; 1975 if (!kcore_extract__create(&kce)) { 1976 delete_extract = true; 1977 strlcpy(symfs_filename, kce.extract_filename, 1978 sizeof(symfs_filename)); 1979 } 1980 } else if (dso__needs_decompress(dso)) { 1981 char tmp[KMOD_DECOMP_LEN]; 1982 1983 if (dso__decompress_kmodule_path(dso, symfs_filename, 1984 tmp, sizeof(tmp)) < 0) 1985 return -1; 1986 1987 decomp = true; 1988 strcpy(symfs_filename, tmp); 1989 } 1990 1991 err = asprintf(&command, 1992 "%s %s%s --start-address=0x%016" PRIx64 1993 " --stop-address=0x%016" PRIx64 1994 " -l -d %s %s %s %c%s%c %s%s -C \"$1\"", 1995 opts->objdump_path ?: "objdump", 1996 opts->disassembler_style ? "-M " : "", 1997 opts->disassembler_style ?: "", 1998 map__rip_2objdump(map, sym->start), 1999 map__rip_2objdump(map, sym->end), 2000 opts->show_asm_raw ? "" : "--no-show-raw-insn", 2001 opts->annotate_src ? "-S" : "", 2002 opts->prefix ? "--prefix " : "", 2003 opts->prefix ? '"' : ' ', 2004 opts->prefix ?: "", 2005 opts->prefix ? '"' : ' ', 2006 opts->prefix_strip ? "--prefix-strip=" : "", 2007 opts->prefix_strip ?: ""); 2008 2009 if (err < 0) { 2010 pr_err("Failure allocating memory for the command to run\n"); 2011 goto out_remove_tmp; 2012 } 2013 2014 pr_debug("Executing: %s\n", command); 2015 2016 objdump_argv[2] = command; 2017 objdump_argv[4] = symfs_filename; 2018 2019 /* Create a pipe to read from for stdout */ 2020 memset(&objdump_process, 0, sizeof(objdump_process)); 2021 objdump_process.argv = objdump_argv; 2022 objdump_process.out = -1; 2023 if (start_command(&objdump_process)) { 2024 pr_err("Failure starting to run %s\n", command); 2025 err = -1; 2026 goto out_free_command; 2027 } 2028 2029 file = fdopen(objdump_process.out, "r"); 2030 if (!file) { 2031 pr_err("Failure creating FILE stream for %s\n", command); 2032 /* 2033 * If we were using debug info should retry with 2034 * original binary. 2035 */ 2036 err = -1; 2037 goto out_close_stdout; 2038 } 2039 2040 /* Storage for getline. */ 2041 line = NULL; 2042 line_len = 0; 2043 2044 nline = 0; 2045 while (!feof(file)) { 2046 const char *match; 2047 char *expanded_line; 2048 2049 if (getline(&line, &line_len, file) < 0 || !line) 2050 break; 2051 2052 /* Skip lines containing "filename:" */ 2053 match = strstr(line, symfs_filename); 2054 if (match && match[strlen(symfs_filename)] == ':') 2055 continue; 2056 2057 expanded_line = strim(line); 2058 expanded_line = expand_tabs(expanded_line, &line, &line_len); 2059 if (!expanded_line) 2060 break; 2061 2062 /* 2063 * The source code line number (lineno) needs to be kept in 2064 * across calls to symbol__parse_objdump_line(), so that it 2065 * can associate it with the instructions till the next one. 2066 * See disasm_line__new() and struct disasm_line::line_nr. 2067 */ 2068 if (symbol__parse_objdump_line(sym, args, expanded_line, 2069 &lineno, &fileloc) < 0) 2070 break; 2071 nline++; 2072 } 2073 free(line); 2074 2075 err = finish_command(&objdump_process); 2076 if (err) 2077 pr_err("Error running %s\n", command); 2078 2079 if (nline == 0) { 2080 err = -1; 2081 pr_err("No output from %s\n", command); 2082 } 2083 2084 /* 2085 * kallsyms does not have symbol sizes so there may a nop at the end. 2086 * Remove it. 2087 */ 2088 if (dso__is_kcore(dso)) 2089 delete_last_nop(sym); 2090 2091 fclose(file); 2092 2093 out_close_stdout: 2094 close(objdump_process.out); 2095 2096 out_free_command: 2097 free(command); 2098 2099 out_remove_tmp: 2100 if (decomp) 2101 unlink(symfs_filename); 2102 2103 if (delete_extract) 2104 kcore_extract__delete(&kce); 2105 2106 return err; 2107 } 2108 2109 static void calc_percent(struct sym_hist *sym_hist, 2110 struct hists *hists, 2111 struct annotation_data *data, 2112 s64 offset, s64 end) 2113 { 2114 unsigned int hits = 0; 2115 u64 period = 0; 2116 2117 while (offset < end) { 2118 hits += sym_hist->addr[offset].nr_samples; 2119 period += sym_hist->addr[offset].period; 2120 ++offset; 2121 } 2122 2123 if (sym_hist->nr_samples) { 2124 data->he.period = period; 2125 data->he.nr_samples = hits; 2126 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples; 2127 } 2128 2129 if (hists->stats.nr_non_filtered_samples) 2130 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples; 2131 2132 if (sym_hist->period) 2133 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period; 2134 2135 if (hists->stats.total_period) 2136 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period; 2137 } 2138 2139 static void annotation__calc_percent(struct annotation *notes, 2140 struct evsel *leader, s64 len) 2141 { 2142 struct annotation_line *al, *next; 2143 struct evsel *evsel; 2144 2145 list_for_each_entry(al, ¬es->src->source, node) { 2146 s64 end; 2147 int i = 0; 2148 2149 if (al->offset == -1) 2150 continue; 2151 2152 next = annotation_line__next(al, ¬es->src->source); 2153 end = next ? next->offset : len; 2154 2155 for_each_group_evsel(evsel, leader) { 2156 struct hists *hists = evsel__hists(evsel); 2157 struct annotation_data *data; 2158 struct sym_hist *sym_hist; 2159 2160 BUG_ON(i >= al->data_nr); 2161 2162 sym_hist = annotation__histogram(notes, evsel->core.idx); 2163 data = &al->data[i++]; 2164 2165 calc_percent(sym_hist, hists, data, al->offset, end); 2166 } 2167 } 2168 } 2169 2170 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel) 2171 { 2172 struct annotation *notes = symbol__annotation(sym); 2173 2174 annotation__calc_percent(notes, evsel, symbol__size(sym)); 2175 } 2176 2177 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel, 2178 struct annotation_options *options, struct arch **parch) 2179 { 2180 struct symbol *sym = ms->sym; 2181 struct annotation *notes = symbol__annotation(sym); 2182 struct annotate_args args = { 2183 .evsel = evsel, 2184 .options = options, 2185 }; 2186 struct perf_env *env = evsel__env(evsel); 2187 const char *arch_name = perf_env__arch(env); 2188 struct arch *arch; 2189 int err; 2190 2191 if (!arch_name) 2192 return errno; 2193 2194 args.arch = arch = arch__find(arch_name); 2195 if (arch == NULL) { 2196 pr_err("%s: unsupported arch %s\n", __func__, arch_name); 2197 return ENOTSUP; 2198 } 2199 2200 if (parch) 2201 *parch = arch; 2202 2203 if (arch->init) { 2204 err = arch->init(arch, env ? env->cpuid : NULL); 2205 if (err) { 2206 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); 2207 return err; 2208 } 2209 } 2210 2211 args.ms = *ms; 2212 notes->start = map__rip_2objdump(ms->map, sym->start); 2213 2214 return symbol__disassemble(sym, &args); 2215 } 2216 2217 static void insert_source_line(struct rb_root *root, struct annotation_line *al, 2218 struct annotation_options *opts) 2219 { 2220 struct annotation_line *iter; 2221 struct rb_node **p = &root->rb_node; 2222 struct rb_node *parent = NULL; 2223 int i, ret; 2224 2225 while (*p != NULL) { 2226 parent = *p; 2227 iter = rb_entry(parent, struct annotation_line, rb_node); 2228 2229 ret = strcmp(iter->path, al->path); 2230 if (ret == 0) { 2231 for (i = 0; i < al->data_nr; i++) { 2232 iter->data[i].percent_sum += annotation_data__percent(&al->data[i], 2233 opts->percent_type); 2234 } 2235 return; 2236 } 2237 2238 if (ret < 0) 2239 p = &(*p)->rb_left; 2240 else 2241 p = &(*p)->rb_right; 2242 } 2243 2244 for (i = 0; i < al->data_nr; i++) { 2245 al->data[i].percent_sum = annotation_data__percent(&al->data[i], 2246 opts->percent_type); 2247 } 2248 2249 rb_link_node(&al->rb_node, parent, p); 2250 rb_insert_color(&al->rb_node, root); 2251 } 2252 2253 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b) 2254 { 2255 int i; 2256 2257 for (i = 0; i < a->data_nr; i++) { 2258 if (a->data[i].percent_sum == b->data[i].percent_sum) 2259 continue; 2260 return a->data[i].percent_sum > b->data[i].percent_sum; 2261 } 2262 2263 return 0; 2264 } 2265 2266 static void __resort_source_line(struct rb_root *root, struct annotation_line *al) 2267 { 2268 struct annotation_line *iter; 2269 struct rb_node **p = &root->rb_node; 2270 struct rb_node *parent = NULL; 2271 2272 while (*p != NULL) { 2273 parent = *p; 2274 iter = rb_entry(parent, struct annotation_line, rb_node); 2275 2276 if (cmp_source_line(al, iter)) 2277 p = &(*p)->rb_left; 2278 else 2279 p = &(*p)->rb_right; 2280 } 2281 2282 rb_link_node(&al->rb_node, parent, p); 2283 rb_insert_color(&al->rb_node, root); 2284 } 2285 2286 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 2287 { 2288 struct annotation_line *al; 2289 struct rb_node *node; 2290 2291 node = rb_first(src_root); 2292 while (node) { 2293 struct rb_node *next; 2294 2295 al = rb_entry(node, struct annotation_line, rb_node); 2296 next = rb_next(node); 2297 rb_erase(node, src_root); 2298 2299 __resort_source_line(dest_root, al); 2300 node = next; 2301 } 2302 } 2303 2304 static void print_summary(struct rb_root *root, const char *filename) 2305 { 2306 struct annotation_line *al; 2307 struct rb_node *node; 2308 2309 printf("\nSorted summary for file %s\n", filename); 2310 printf("----------------------------------------------\n\n"); 2311 2312 if (RB_EMPTY_ROOT(root)) { 2313 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 2314 return; 2315 } 2316 2317 node = rb_first(root); 2318 while (node) { 2319 double percent, percent_max = 0.0; 2320 const char *color; 2321 char *path; 2322 int i; 2323 2324 al = rb_entry(node, struct annotation_line, rb_node); 2325 for (i = 0; i < al->data_nr; i++) { 2326 percent = al->data[i].percent_sum; 2327 color = get_percent_color(percent); 2328 color_fprintf(stdout, color, " %7.2f", percent); 2329 2330 if (percent > percent_max) 2331 percent_max = percent; 2332 } 2333 2334 path = al->path; 2335 color = get_percent_color(percent_max); 2336 color_fprintf(stdout, color, " %s\n", path); 2337 2338 node = rb_next(node); 2339 } 2340 } 2341 2342 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel) 2343 { 2344 struct annotation *notes = symbol__annotation(sym); 2345 struct sym_hist *h = annotation__histogram(notes, evsel->core.idx); 2346 u64 len = symbol__size(sym), offset; 2347 2348 for (offset = 0; offset < len; ++offset) 2349 if (h->addr[offset].nr_samples != 0) 2350 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 2351 sym->start + offset, h->addr[offset].nr_samples); 2352 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); 2353 } 2354 2355 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start) 2356 { 2357 char bf[32]; 2358 struct annotation_line *line; 2359 2360 list_for_each_entry_reverse(line, lines, node) { 2361 if (line->offset != -1) 2362 return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset); 2363 } 2364 2365 return 0; 2366 } 2367 2368 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel, 2369 struct annotation_options *opts) 2370 { 2371 struct map *map = ms->map; 2372 struct symbol *sym = ms->sym; 2373 struct dso *dso = map->dso; 2374 char *filename; 2375 const char *d_filename; 2376 const char *evsel_name = evsel__name(evsel); 2377 struct annotation *notes = symbol__annotation(sym); 2378 struct sym_hist *h = annotation__histogram(notes, evsel->core.idx); 2379 struct annotation_line *pos, *queue = NULL; 2380 u64 start = map__rip_2objdump(map, sym->start); 2381 int printed = 2, queue_len = 0, addr_fmt_width; 2382 int more = 0; 2383 bool context = opts->context; 2384 u64 len; 2385 int width = symbol_conf.show_total_period ? 12 : 8; 2386 int graph_dotted_len; 2387 char buf[512]; 2388 2389 filename = strdup(dso->long_name); 2390 if (!filename) 2391 return -ENOMEM; 2392 2393 if (opts->full_path) 2394 d_filename = filename; 2395 else 2396 d_filename = basename(filename); 2397 2398 len = symbol__size(sym); 2399 2400 if (evsel__is_group_event(evsel)) { 2401 width *= evsel->core.nr_members; 2402 evsel__group_desc(evsel, buf, sizeof(buf)); 2403 evsel_name = buf; 2404 } 2405 2406 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, " 2407 "percent: %s)\n", 2408 width, width, symbol_conf.show_total_period ? "Period" : 2409 symbol_conf.show_nr_samples ? "Samples" : "Percent", 2410 d_filename, evsel_name, h->nr_samples, 2411 percent_type_str(opts->percent_type)); 2412 2413 printf("%-*.*s----\n", 2414 graph_dotted_len, graph_dotted_len, graph_dotted_line); 2415 2416 if (verbose > 0) 2417 symbol__annotate_hits(sym, evsel); 2418 2419 addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); 2420 2421 list_for_each_entry(pos, ¬es->src->source, node) { 2422 int err; 2423 2424 if (context && queue == NULL) { 2425 queue = pos; 2426 queue_len = 0; 2427 } 2428 2429 err = annotation_line__print(pos, sym, start, evsel, len, 2430 opts->min_pcnt, printed, opts->max_lines, 2431 queue, addr_fmt_width, opts->percent_type); 2432 2433 switch (err) { 2434 case 0: 2435 ++printed; 2436 if (context) { 2437 printed += queue_len; 2438 queue = NULL; 2439 queue_len = 0; 2440 } 2441 break; 2442 case 1: 2443 /* filtered by max_lines */ 2444 ++more; 2445 break; 2446 case -1: 2447 default: 2448 /* 2449 * Filtered by min_pcnt or non IP lines when 2450 * context != 0 2451 */ 2452 if (!context) 2453 break; 2454 if (queue_len == context) 2455 queue = list_entry(queue->node.next, typeof(*queue), node); 2456 else 2457 ++queue_len; 2458 break; 2459 } 2460 } 2461 2462 free(filename); 2463 2464 return more; 2465 } 2466 2467 static void FILE__set_percent_color(void *fp __maybe_unused, 2468 double percent __maybe_unused, 2469 bool current __maybe_unused) 2470 { 2471 } 2472 2473 static int FILE__set_jumps_percent_color(void *fp __maybe_unused, 2474 int nr __maybe_unused, bool current __maybe_unused) 2475 { 2476 return 0; 2477 } 2478 2479 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused) 2480 { 2481 return 0; 2482 } 2483 2484 static void FILE__printf(void *fp, const char *fmt, ...) 2485 { 2486 va_list args; 2487 2488 va_start(args, fmt); 2489 vfprintf(fp, fmt, args); 2490 va_end(args); 2491 } 2492 2493 static void FILE__write_graph(void *fp, int graph) 2494 { 2495 const char *s; 2496 switch (graph) { 2497 2498 case DARROW_CHAR: s = "↓"; break; 2499 case UARROW_CHAR: s = "↑"; break; 2500 case LARROW_CHAR: s = "←"; break; 2501 case RARROW_CHAR: s = "→"; break; 2502 default: s = "?"; break; 2503 } 2504 2505 fputs(s, fp); 2506 } 2507 2508 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp, 2509 struct annotation_options *opts) 2510 { 2511 struct annotation *notes = symbol__annotation(sym); 2512 struct annotation_write_ops wops = { 2513 .first_line = true, 2514 .obj = fp, 2515 .set_color = FILE__set_color, 2516 .set_percent_color = FILE__set_percent_color, 2517 .set_jumps_percent_color = FILE__set_jumps_percent_color, 2518 .printf = FILE__printf, 2519 .write_graph = FILE__write_graph, 2520 }; 2521 struct annotation_line *al; 2522 2523 list_for_each_entry(al, ¬es->src->source, node) { 2524 if (annotation_line__filter(al, notes)) 2525 continue; 2526 annotation_line__write(al, notes, &wops, opts); 2527 fputc('\n', fp); 2528 wops.first_line = false; 2529 } 2530 2531 return 0; 2532 } 2533 2534 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel, 2535 struct annotation_options *opts) 2536 { 2537 const char *ev_name = evsel__name(evsel); 2538 char buf[1024]; 2539 char *filename; 2540 int err = -1; 2541 FILE *fp; 2542 2543 if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0) 2544 return -1; 2545 2546 fp = fopen(filename, "w"); 2547 if (fp == NULL) 2548 goto out_free_filename; 2549 2550 if (evsel__is_group_event(evsel)) { 2551 evsel__group_desc(evsel, buf, sizeof(buf)); 2552 ev_name = buf; 2553 } 2554 2555 fprintf(fp, "%s() %s\nEvent: %s\n\n", 2556 ms->sym->name, ms->map->dso->long_name, ev_name); 2557 symbol__annotate_fprintf2(ms->sym, fp, opts); 2558 2559 fclose(fp); 2560 err = 0; 2561 out_free_filename: 2562 free(filename); 2563 return err; 2564 } 2565 2566 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 2567 { 2568 struct annotation *notes = symbol__annotation(sym); 2569 struct sym_hist *h = annotation__histogram(notes, evidx); 2570 2571 memset(h, 0, notes->src->sizeof_sym_hist); 2572 } 2573 2574 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 2575 { 2576 struct annotation *notes = symbol__annotation(sym); 2577 struct sym_hist *h = annotation__histogram(notes, evidx); 2578 int len = symbol__size(sym), offset; 2579 2580 h->nr_samples = 0; 2581 for (offset = 0; offset < len; ++offset) { 2582 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; 2583 h->nr_samples += h->addr[offset].nr_samples; 2584 } 2585 } 2586 2587 void annotated_source__purge(struct annotated_source *as) 2588 { 2589 struct annotation_line *al, *n; 2590 2591 list_for_each_entry_safe(al, n, &as->source, node) { 2592 list_del_init(&al->node); 2593 disasm_line__free(disasm_line(al)); 2594 } 2595 } 2596 2597 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 2598 { 2599 size_t printed; 2600 2601 if (dl->al.offset == -1) 2602 return fprintf(fp, "%s\n", dl->al.line); 2603 2604 printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name); 2605 2606 if (dl->ops.raw[0] != '\0') { 2607 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 2608 dl->ops.raw); 2609 } 2610 2611 return printed + fprintf(fp, "\n"); 2612 } 2613 2614 size_t disasm__fprintf(struct list_head *head, FILE *fp) 2615 { 2616 struct disasm_line *pos; 2617 size_t printed = 0; 2618 2619 list_for_each_entry(pos, head, al.node) 2620 printed += disasm_line__fprintf(pos, fp); 2621 2622 return printed; 2623 } 2624 2625 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym) 2626 { 2627 if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) || 2628 !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 || 2629 dl->ops.target.offset >= (s64)symbol__size(sym)) 2630 return false; 2631 2632 return true; 2633 } 2634 2635 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym) 2636 { 2637 u64 offset, size = symbol__size(sym); 2638 2639 /* PLT symbols contain external offsets */ 2640 if (strstr(sym->name, "@plt")) 2641 return; 2642 2643 for (offset = 0; offset < size; ++offset) { 2644 struct annotation_line *al = notes->offsets[offset]; 2645 struct disasm_line *dl; 2646 2647 dl = disasm_line(al); 2648 2649 if (!disasm_line__is_valid_local_jump(dl, sym)) 2650 continue; 2651 2652 al = notes->offsets[dl->ops.target.offset]; 2653 2654 /* 2655 * FIXME: Oops, no jump target? Buggy disassembler? Or do we 2656 * have to adjust to the previous offset? 2657 */ 2658 if (al == NULL) 2659 continue; 2660 2661 if (++al->jump_sources > notes->max_jump_sources) 2662 notes->max_jump_sources = al->jump_sources; 2663 } 2664 } 2665 2666 void annotation__set_offsets(struct annotation *notes, s64 size) 2667 { 2668 struct annotation_line *al; 2669 2670 notes->max_line_len = 0; 2671 notes->nr_entries = 0; 2672 notes->nr_asm_entries = 0; 2673 2674 list_for_each_entry(al, ¬es->src->source, node) { 2675 size_t line_len = strlen(al->line); 2676 2677 if (notes->max_line_len < line_len) 2678 notes->max_line_len = line_len; 2679 al->idx = notes->nr_entries++; 2680 if (al->offset != -1) { 2681 al->idx_asm = notes->nr_asm_entries++; 2682 /* 2683 * FIXME: short term bandaid to cope with assembly 2684 * routines that comes with labels in the same column 2685 * as the address in objdump, sigh. 2686 * 2687 * E.g. copy_user_generic_unrolled 2688 */ 2689 if (al->offset < size) 2690 notes->offsets[al->offset] = al; 2691 } else 2692 al->idx_asm = -1; 2693 } 2694 } 2695 2696 static inline int width_jumps(int n) 2697 { 2698 if (n >= 100) 2699 return 5; 2700 if (n / 10) 2701 return 2; 2702 return 1; 2703 } 2704 2705 static int annotation__max_ins_name(struct annotation *notes) 2706 { 2707 int max_name = 0, len; 2708 struct annotation_line *al; 2709 2710 list_for_each_entry(al, ¬es->src->source, node) { 2711 if (al->offset == -1) 2712 continue; 2713 2714 len = strlen(disasm_line(al)->ins.name); 2715 if (max_name < len) 2716 max_name = len; 2717 } 2718 2719 return max_name; 2720 } 2721 2722 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym) 2723 { 2724 notes->widths.addr = notes->widths.target = 2725 notes->widths.min_addr = hex_width(symbol__size(sym)); 2726 notes->widths.max_addr = hex_width(sym->end); 2727 notes->widths.jumps = width_jumps(notes->max_jump_sources); 2728 notes->widths.max_ins_name = annotation__max_ins_name(notes); 2729 } 2730 2731 void annotation__update_column_widths(struct annotation *notes) 2732 { 2733 if (notes->options->use_offset) 2734 notes->widths.target = notes->widths.min_addr; 2735 else 2736 notes->widths.target = notes->widths.max_addr; 2737 2738 notes->widths.addr = notes->widths.target; 2739 2740 if (notes->options->show_nr_jumps) 2741 notes->widths.addr += notes->widths.jumps + 1; 2742 } 2743 2744 static void annotation__calc_lines(struct annotation *notes, struct map *map, 2745 struct rb_root *root, 2746 struct annotation_options *opts) 2747 { 2748 struct annotation_line *al; 2749 struct rb_root tmp_root = RB_ROOT; 2750 2751 list_for_each_entry(al, ¬es->src->source, node) { 2752 double percent_max = 0.0; 2753 int i; 2754 2755 for (i = 0; i < al->data_nr; i++) { 2756 double percent; 2757 2758 percent = annotation_data__percent(&al->data[i], 2759 opts->percent_type); 2760 2761 if (percent > percent_max) 2762 percent_max = percent; 2763 } 2764 2765 if (percent_max <= 0.5) 2766 continue; 2767 2768 al->path = get_srcline(map->dso, notes->start + al->offset, NULL, 2769 false, true, notes->start + al->offset); 2770 insert_source_line(&tmp_root, al, opts); 2771 } 2772 2773 resort_source_line(root, &tmp_root); 2774 } 2775 2776 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root, 2777 struct annotation_options *opts) 2778 { 2779 struct annotation *notes = symbol__annotation(ms->sym); 2780 2781 annotation__calc_lines(notes, ms->map, root, opts); 2782 } 2783 2784 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, 2785 struct annotation_options *opts) 2786 { 2787 struct dso *dso = ms->map->dso; 2788 struct symbol *sym = ms->sym; 2789 struct rb_root source_line = RB_ROOT; 2790 struct hists *hists = evsel__hists(evsel); 2791 char buf[1024]; 2792 int err; 2793 2794 err = symbol__annotate2(ms, evsel, opts, NULL); 2795 if (err) { 2796 char msg[BUFSIZ]; 2797 2798 dso->annotate_warned = true; 2799 symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); 2800 ui__error("Couldn't annotate %s:\n%s", sym->name, msg); 2801 return -1; 2802 } 2803 2804 if (opts->print_lines) { 2805 srcline_full_filename = opts->full_path; 2806 symbol__calc_lines(ms, &source_line, opts); 2807 print_summary(&source_line, dso->long_name); 2808 } 2809 2810 hists__scnprintf_title(hists, buf, sizeof(buf)); 2811 fprintf(stdout, "%s, [percent: %s]\n%s() %s\n", 2812 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name); 2813 symbol__annotate_fprintf2(sym, stdout, opts); 2814 2815 annotated_source__purge(symbol__annotation(sym)->src); 2816 2817 return 0; 2818 } 2819 2820 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, 2821 struct annotation_options *opts) 2822 { 2823 struct dso *dso = ms->map->dso; 2824 struct symbol *sym = ms->sym; 2825 struct rb_root source_line = RB_ROOT; 2826 int err; 2827 2828 err = symbol__annotate(ms, evsel, opts, NULL); 2829 if (err) { 2830 char msg[BUFSIZ]; 2831 2832 dso->annotate_warned = true; 2833 symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); 2834 ui__error("Couldn't annotate %s:\n%s", sym->name, msg); 2835 return -1; 2836 } 2837 2838 symbol__calc_percent(sym, evsel); 2839 2840 if (opts->print_lines) { 2841 srcline_full_filename = opts->full_path; 2842 symbol__calc_lines(ms, &source_line, opts); 2843 print_summary(&source_line, dso->long_name); 2844 } 2845 2846 symbol__annotate_printf(ms, evsel, opts); 2847 2848 annotated_source__purge(symbol__annotation(sym)->src); 2849 2850 return 0; 2851 } 2852 2853 bool ui__has_annotation(void) 2854 { 2855 return use_browser == 1 && perf_hpp_list.sym; 2856 } 2857 2858 2859 static double annotation_line__max_percent(struct annotation_line *al, 2860 struct annotation *notes, 2861 unsigned int percent_type) 2862 { 2863 double percent_max = 0.0; 2864 int i; 2865 2866 for (i = 0; i < notes->nr_events; i++) { 2867 double percent; 2868 2869 percent = annotation_data__percent(&al->data[i], 2870 percent_type); 2871 2872 if (percent > percent_max) 2873 percent_max = percent; 2874 } 2875 2876 return percent_max; 2877 } 2878 2879 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes, 2880 void *obj, char *bf, size_t size, 2881 void (*obj__printf)(void *obj, const char *fmt, ...), 2882 void (*obj__write_graph)(void *obj, int graph)) 2883 { 2884 if (dl->ins.ops && dl->ins.ops->scnprintf) { 2885 if (ins__is_jump(&dl->ins)) { 2886 bool fwd; 2887 2888 if (dl->ops.target.outside) 2889 goto call_like; 2890 fwd = dl->ops.target.offset > dl->al.offset; 2891 obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR); 2892 obj__printf(obj, " "); 2893 } else if (ins__is_call(&dl->ins)) { 2894 call_like: 2895 obj__write_graph(obj, RARROW_CHAR); 2896 obj__printf(obj, " "); 2897 } else if (ins__is_ret(&dl->ins)) { 2898 obj__write_graph(obj, LARROW_CHAR); 2899 obj__printf(obj, " "); 2900 } else { 2901 obj__printf(obj, " "); 2902 } 2903 } else { 2904 obj__printf(obj, " "); 2905 } 2906 2907 disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name); 2908 } 2909 2910 static void ipc_coverage_string(char *bf, int size, struct annotation *notes) 2911 { 2912 double ipc = 0.0, coverage = 0.0; 2913 2914 if (notes->hit_cycles) 2915 ipc = notes->hit_insn / ((double)notes->hit_cycles); 2916 2917 if (notes->total_insn) { 2918 coverage = notes->cover_insn * 100.0 / 2919 ((double)notes->total_insn); 2920 } 2921 2922 scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)", 2923 ipc, coverage); 2924 } 2925 2926 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes, 2927 bool first_line, bool current_entry, bool change_color, int width, 2928 void *obj, unsigned int percent_type, 2929 int (*obj__set_color)(void *obj, int color), 2930 void (*obj__set_percent_color)(void *obj, double percent, bool current), 2931 int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current), 2932 void (*obj__printf)(void *obj, const char *fmt, ...), 2933 void (*obj__write_graph)(void *obj, int graph)) 2934 2935 { 2936 double percent_max = annotation_line__max_percent(al, notes, percent_type); 2937 int pcnt_width = annotation__pcnt_width(notes), 2938 cycles_width = annotation__cycles_width(notes); 2939 bool show_title = false; 2940 char bf[256]; 2941 int printed; 2942 2943 if (first_line && (al->offset == -1 || percent_max == 0.0)) { 2944 if (notes->have_cycles) { 2945 if (al->ipc == 0.0 && al->cycles == 0) 2946 show_title = true; 2947 } else 2948 show_title = true; 2949 } 2950 2951 if (al->offset != -1 && percent_max != 0.0) { 2952 int i; 2953 2954 for (i = 0; i < notes->nr_events; i++) { 2955 double percent; 2956 2957 percent = annotation_data__percent(&al->data[i], percent_type); 2958 2959 obj__set_percent_color(obj, percent, current_entry); 2960 if (symbol_conf.show_total_period) { 2961 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period); 2962 } else if (symbol_conf.show_nr_samples) { 2963 obj__printf(obj, "%6" PRIu64 " ", 2964 al->data[i].he.nr_samples); 2965 } else { 2966 obj__printf(obj, "%6.2f ", percent); 2967 } 2968 } 2969 } else { 2970 obj__set_percent_color(obj, 0, current_entry); 2971 2972 if (!show_title) 2973 obj__printf(obj, "%-*s", pcnt_width, " "); 2974 else { 2975 obj__printf(obj, "%-*s", pcnt_width, 2976 symbol_conf.show_total_period ? "Period" : 2977 symbol_conf.show_nr_samples ? "Samples" : "Percent"); 2978 } 2979 } 2980 2981 if (notes->have_cycles) { 2982 if (al->ipc) 2983 obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc); 2984 else if (!show_title) 2985 obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " "); 2986 else 2987 obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC"); 2988 2989 if (!notes->options->show_minmax_cycle) { 2990 if (al->cycles) 2991 obj__printf(obj, "%*" PRIu64 " ", 2992 ANNOTATION__CYCLES_WIDTH - 1, al->cycles); 2993 else if (!show_title) 2994 obj__printf(obj, "%*s", 2995 ANNOTATION__CYCLES_WIDTH, " "); 2996 else 2997 obj__printf(obj, "%*s ", 2998 ANNOTATION__CYCLES_WIDTH - 1, 2999 "Cycle"); 3000 } else { 3001 if (al->cycles) { 3002 char str[32]; 3003 3004 scnprintf(str, sizeof(str), 3005 "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")", 3006 al->cycles, al->cycles_min, 3007 al->cycles_max); 3008 3009 obj__printf(obj, "%*s ", 3010 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 3011 str); 3012 } else if (!show_title) 3013 obj__printf(obj, "%*s", 3014 ANNOTATION__MINMAX_CYCLES_WIDTH, 3015 " "); 3016 else 3017 obj__printf(obj, "%*s ", 3018 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 3019 "Cycle(min/max)"); 3020 } 3021 3022 if (show_title && !*al->line) { 3023 ipc_coverage_string(bf, sizeof(bf), notes); 3024 obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf); 3025 } 3026 } 3027 3028 obj__printf(obj, " "); 3029 3030 if (!*al->line) 3031 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " "); 3032 else if (al->offset == -1) { 3033 if (al->line_nr && notes->options->show_linenr) 3034 printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr); 3035 else 3036 printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->widths.addr, " "); 3037 obj__printf(obj, bf); 3038 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line); 3039 } else { 3040 u64 addr = al->offset; 3041 int color = -1; 3042 3043 if (!notes->options->use_offset) 3044 addr += notes->start; 3045 3046 if (!notes->options->use_offset) { 3047 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr); 3048 } else { 3049 if (al->jump_sources && 3050 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) { 3051 if (notes->options->show_nr_jumps) { 3052 int prev; 3053 printed = scnprintf(bf, sizeof(bf), "%*d ", 3054 notes->widths.jumps, 3055 al->jump_sources); 3056 prev = obj__set_jumps_percent_color(obj, al->jump_sources, 3057 current_entry); 3058 obj__printf(obj, bf); 3059 obj__set_color(obj, prev); 3060 } 3061 print_addr: 3062 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ", 3063 notes->widths.target, addr); 3064 } else if (ins__is_call(&disasm_line(al)->ins) && 3065 notes->options->offset_level >= ANNOTATION__OFFSET_CALL) { 3066 goto print_addr; 3067 } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) { 3068 goto print_addr; 3069 } else { 3070 printed = scnprintf(bf, sizeof(bf), "%-*s ", 3071 notes->widths.addr, " "); 3072 } 3073 } 3074 3075 if (change_color) 3076 color = obj__set_color(obj, HE_COLORSET_ADDR); 3077 obj__printf(obj, bf); 3078 if (change_color) 3079 obj__set_color(obj, color); 3080 3081 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph); 3082 3083 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf); 3084 } 3085 3086 } 3087 3088 void annotation_line__write(struct annotation_line *al, struct annotation *notes, 3089 struct annotation_write_ops *wops, 3090 struct annotation_options *opts) 3091 { 3092 __annotation_line__write(al, notes, wops->first_line, wops->current_entry, 3093 wops->change_color, wops->width, wops->obj, 3094 opts->percent_type, 3095 wops->set_color, wops->set_percent_color, 3096 wops->set_jumps_percent_color, wops->printf, 3097 wops->write_graph); 3098 } 3099 3100 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel, 3101 struct annotation_options *options, struct arch **parch) 3102 { 3103 struct symbol *sym = ms->sym; 3104 struct annotation *notes = symbol__annotation(sym); 3105 size_t size = symbol__size(sym); 3106 int nr_pcnt = 1, err; 3107 3108 notes->offsets = zalloc(size * sizeof(struct annotation_line *)); 3109 if (notes->offsets == NULL) 3110 return ENOMEM; 3111 3112 if (evsel__is_group_event(evsel)) 3113 nr_pcnt = evsel->core.nr_members; 3114 3115 err = symbol__annotate(ms, evsel, options, parch); 3116 if (err) 3117 goto out_free_offsets; 3118 3119 notes->options = options; 3120 3121 symbol__calc_percent(sym, evsel); 3122 3123 annotation__set_offsets(notes, size); 3124 annotation__mark_jump_targets(notes, sym); 3125 annotation__compute_ipc(notes, size); 3126 annotation__init_column_widths(notes, sym); 3127 notes->nr_events = nr_pcnt; 3128 3129 annotation__update_column_widths(notes); 3130 sym->annotate2 = true; 3131 3132 return 0; 3133 3134 out_free_offsets: 3135 zfree(¬es->offsets); 3136 return err; 3137 } 3138 3139 static int annotation__config(const char *var, const char *value, void *data) 3140 { 3141 struct annotation_options *opt = data; 3142 3143 if (!strstarts(var, "annotate.")) 3144 return 0; 3145 3146 if (!strcmp(var, "annotate.offset_level")) { 3147 perf_config_u8(&opt->offset_level, "offset_level", value); 3148 3149 if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL) 3150 opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL; 3151 else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL) 3152 opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL; 3153 } else if (!strcmp(var, "annotate.hide_src_code")) { 3154 opt->hide_src_code = perf_config_bool("hide_src_code", value); 3155 } else if (!strcmp(var, "annotate.jump_arrows")) { 3156 opt->jump_arrows = perf_config_bool("jump_arrows", value); 3157 } else if (!strcmp(var, "annotate.show_linenr")) { 3158 opt->show_linenr = perf_config_bool("show_linenr", value); 3159 } else if (!strcmp(var, "annotate.show_nr_jumps")) { 3160 opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value); 3161 } else if (!strcmp(var, "annotate.show_nr_samples")) { 3162 symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples", 3163 value); 3164 } else if (!strcmp(var, "annotate.show_total_period")) { 3165 symbol_conf.show_total_period = perf_config_bool("show_total_period", 3166 value); 3167 } else if (!strcmp(var, "annotate.use_offset")) { 3168 opt->use_offset = perf_config_bool("use_offset", value); 3169 } else if (!strcmp(var, "annotate.disassembler_style")) { 3170 opt->disassembler_style = value; 3171 } else if (!strcmp(var, "annotate.demangle")) { 3172 symbol_conf.demangle = perf_config_bool("demangle", value); 3173 } else if (!strcmp(var, "annotate.demangle_kernel")) { 3174 symbol_conf.demangle_kernel = perf_config_bool("demangle_kernel", value); 3175 } else { 3176 pr_debug("%s variable unknown, ignoring...", var); 3177 } 3178 3179 return 0; 3180 } 3181 3182 void annotation_config__init(struct annotation_options *opt) 3183 { 3184 perf_config(annotation__config, opt); 3185 } 3186 3187 static unsigned int parse_percent_type(char *str1, char *str2) 3188 { 3189 unsigned int type = (unsigned int) -1; 3190 3191 if (!strcmp("period", str1)) { 3192 if (!strcmp("local", str2)) 3193 type = PERCENT_PERIOD_LOCAL; 3194 else if (!strcmp("global", str2)) 3195 type = PERCENT_PERIOD_GLOBAL; 3196 } 3197 3198 if (!strcmp("hits", str1)) { 3199 if (!strcmp("local", str2)) 3200 type = PERCENT_HITS_LOCAL; 3201 else if (!strcmp("global", str2)) 3202 type = PERCENT_HITS_GLOBAL; 3203 } 3204 3205 return type; 3206 } 3207 3208 int annotate_parse_percent_type(const struct option *opt, const char *_str, 3209 int unset __maybe_unused) 3210 { 3211 struct annotation_options *opts = opt->value; 3212 unsigned int type; 3213 char *str1, *str2; 3214 int err = -1; 3215 3216 str1 = strdup(_str); 3217 if (!str1) 3218 return -ENOMEM; 3219 3220 str2 = strchr(str1, '-'); 3221 if (!str2) 3222 goto out; 3223 3224 *str2++ = 0; 3225 3226 type = parse_percent_type(str1, str2); 3227 if (type == (unsigned int) -1) 3228 type = parse_percent_type(str2, str1); 3229 if (type != (unsigned int) -1) { 3230 opts->percent_type = type; 3231 err = 0; 3232 } 3233 3234 out: 3235 free(str1); 3236 return err; 3237 } 3238 3239 int annotate_check_args(struct annotation_options *args) 3240 { 3241 if (args->prefix_strip && !args->prefix) { 3242 pr_err("--prefix-strip requires --prefix\n"); 3243 return -1; 3244 } 3245 return 0; 3246 } 3247