1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 4 * 5 * Parts came from builtin-annotate.c, see those files for further 6 * copyright notes. 7 */ 8 9 #include <errno.h> 10 #include <inttypes.h> 11 #include <libgen.h> 12 #include <stdlib.h> 13 #include <bpf/bpf.h> 14 #include <bpf/btf.h> 15 #include <bpf/libbpf.h> 16 #include <linux/btf.h> 17 #include "util.h" // hex_width() 18 #include "ui/ui.h" 19 #include "sort.h" 20 #include "build-id.h" 21 #include "color.h" 22 #include "config.h" 23 #include "dso.h" 24 #include "env.h" 25 #include "map.h" 26 #include "maps.h" 27 #include "symbol.h" 28 #include "srcline.h" 29 #include "units.h" 30 #include "debug.h" 31 #include "annotate.h" 32 #include "evsel.h" 33 #include "evlist.h" 34 #include "bpf-event.h" 35 #include "block-range.h" 36 #include "string2.h" 37 #include "util/event.h" 38 #include "arch/common.h" 39 #include <regex.h> 40 #include <pthread.h> 41 #include <linux/bitops.h> 42 #include <linux/kernel.h> 43 #include <linux/string.h> 44 #include <bpf/libbpf.h> 45 #include <subcmd/parse-options.h> 46 #include <subcmd/run-command.h> 47 48 /* FIXME: For the HE_COLORSET */ 49 #include "ui/browser.h" 50 51 /* 52 * FIXME: Using the same values as slang.h, 53 * but that header may not be available everywhere 54 */ 55 #define LARROW_CHAR ((unsigned char)',') 56 #define RARROW_CHAR ((unsigned char)'+') 57 #define DARROW_CHAR ((unsigned char)'.') 58 #define UARROW_CHAR ((unsigned char)'-') 59 60 #include <linux/ctype.h> 61 62 struct annotation_options annotation__default_options = { 63 .use_offset = true, 64 .jump_arrows = true, 65 .annotate_src = true, 66 .offset_level = ANNOTATION__OFFSET_JUMP_TARGETS, 67 .percent_type = PERCENT_PERIOD_LOCAL, 68 }; 69 70 static regex_t file_lineno; 71 72 static struct ins_ops *ins__find(struct arch *arch, const char *name); 73 static void ins__sort(struct arch *arch); 74 static int disasm_line__parse(char *line, const char **namep, char **rawp); 75 76 struct arch { 77 const char *name; 78 struct ins *instructions; 79 size_t nr_instructions; 80 size_t nr_instructions_allocated; 81 struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name); 82 bool sorted_instructions; 83 bool initialized; 84 void *priv; 85 unsigned int model; 86 unsigned int family; 87 int (*init)(struct arch *arch, char *cpuid); 88 bool (*ins_is_fused)(struct arch *arch, const char *ins1, 89 const char *ins2); 90 struct { 91 char comment_char; 92 char skip_functions_char; 93 } objdump; 94 }; 95 96 static struct ins_ops call_ops; 97 static struct ins_ops dec_ops; 98 static struct ins_ops jump_ops; 99 static struct ins_ops mov_ops; 100 static struct ins_ops nop_ops; 101 static struct ins_ops lock_ops; 102 static struct ins_ops ret_ops; 103 104 static int arch__grow_instructions(struct arch *arch) 105 { 106 struct ins *new_instructions; 107 size_t new_nr_allocated; 108 109 if (arch->nr_instructions_allocated == 0 && arch->instructions) 110 goto grow_from_non_allocated_table; 111 112 new_nr_allocated = arch->nr_instructions_allocated + 128; 113 new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins)); 114 if (new_instructions == NULL) 115 return -1; 116 117 out_update_instructions: 118 arch->instructions = new_instructions; 119 arch->nr_instructions_allocated = new_nr_allocated; 120 return 0; 121 122 grow_from_non_allocated_table: 123 new_nr_allocated = arch->nr_instructions + 128; 124 new_instructions = calloc(new_nr_allocated, sizeof(struct ins)); 125 if (new_instructions == NULL) 126 return -1; 127 128 memcpy(new_instructions, arch->instructions, arch->nr_instructions); 129 goto out_update_instructions; 130 } 131 132 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops) 133 { 134 struct ins *ins; 135 136 if (arch->nr_instructions == arch->nr_instructions_allocated && 137 arch__grow_instructions(arch)) 138 return -1; 139 140 ins = &arch->instructions[arch->nr_instructions]; 141 ins->name = strdup(name); 142 if (!ins->name) 143 return -1; 144 145 ins->ops = ops; 146 arch->nr_instructions++; 147 148 ins__sort(arch); 149 return 0; 150 } 151 152 #include "arch/arc/annotate/instructions.c" 153 #include "arch/arm/annotate/instructions.c" 154 #include "arch/arm64/annotate/instructions.c" 155 #include "arch/csky/annotate/instructions.c" 156 #include "arch/x86/annotate/instructions.c" 157 #include "arch/powerpc/annotate/instructions.c" 158 #include "arch/s390/annotate/instructions.c" 159 #include "arch/sparc/annotate/instructions.c" 160 161 static struct arch architectures[] = { 162 { 163 .name = "arc", 164 .init = arc__annotate_init, 165 }, 166 { 167 .name = "arm", 168 .init = arm__annotate_init, 169 }, 170 { 171 .name = "arm64", 172 .init = arm64__annotate_init, 173 }, 174 { 175 .name = "csky", 176 .init = csky__annotate_init, 177 }, 178 { 179 .name = "x86", 180 .init = x86__annotate_init, 181 .instructions = x86__instructions, 182 .nr_instructions = ARRAY_SIZE(x86__instructions), 183 .ins_is_fused = x86__ins_is_fused, 184 .objdump = { 185 .comment_char = '#', 186 }, 187 }, 188 { 189 .name = "powerpc", 190 .init = powerpc__annotate_init, 191 }, 192 { 193 .name = "s390", 194 .init = s390__annotate_init, 195 .objdump = { 196 .comment_char = '#', 197 }, 198 }, 199 { 200 .name = "sparc", 201 .init = sparc__annotate_init, 202 .objdump = { 203 .comment_char = '#', 204 }, 205 }, 206 }; 207 208 static void ins__delete(struct ins_operands *ops) 209 { 210 if (ops == NULL) 211 return; 212 zfree(&ops->source.raw); 213 zfree(&ops->source.name); 214 zfree(&ops->target.raw); 215 zfree(&ops->target.name); 216 } 217 218 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 219 struct ins_operands *ops, int max_ins_name) 220 { 221 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw); 222 } 223 224 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 225 struct ins_operands *ops, int max_ins_name) 226 { 227 if (ins->ops->scnprintf) 228 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name); 229 230 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 231 } 232 233 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2) 234 { 235 if (!arch || !arch->ins_is_fused) 236 return false; 237 238 return arch->ins_is_fused(arch, ins1, ins2); 239 } 240 241 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 242 { 243 char *endptr, *tok, *name; 244 struct map *map = ms->map; 245 struct addr_map_symbol target = { 246 .ms = { .map = map, }, 247 }; 248 249 ops->target.addr = strtoull(ops->raw, &endptr, 16); 250 251 name = strchr(endptr, '<'); 252 if (name == NULL) 253 goto indirect_call; 254 255 name++; 256 257 if (arch->objdump.skip_functions_char && 258 strchr(name, arch->objdump.skip_functions_char)) 259 return -1; 260 261 tok = strchr(name, '>'); 262 if (tok == NULL) 263 return -1; 264 265 *tok = '\0'; 266 ops->target.name = strdup(name); 267 *tok = '>'; 268 269 if (ops->target.name == NULL) 270 return -1; 271 find_target: 272 target.addr = map__objdump_2mem(map, ops->target.addr); 273 274 if (maps__find_ams(ms->maps, &target) == 0 && 275 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 276 ops->target.sym = target.ms.sym; 277 278 return 0; 279 280 indirect_call: 281 tok = strchr(endptr, '*'); 282 if (tok != NULL) { 283 endptr++; 284 285 /* Indirect call can use a non-rip register and offset: callq *0x8(%rbx). 286 * Do not parse such instruction. */ 287 if (strstr(endptr, "(%r") == NULL) 288 ops->target.addr = strtoull(endptr, NULL, 16); 289 } 290 goto find_target; 291 } 292 293 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 294 struct ins_operands *ops, int max_ins_name) 295 { 296 if (ops->target.sym) 297 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 298 299 if (ops->target.addr == 0) 300 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 301 302 if (ops->target.name) 303 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name); 304 305 return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr); 306 } 307 308 static struct ins_ops call_ops = { 309 .parse = call__parse, 310 .scnprintf = call__scnprintf, 311 }; 312 313 bool ins__is_call(const struct ins *ins) 314 { 315 return ins->ops == &call_ops || ins->ops == &s390_call_ops; 316 } 317 318 /* 319 * Prevents from matching commas in the comment section, e.g.: 320 * ffff200008446e70: b.cs ffff2000084470f4 <generic_exec_single+0x314> // b.hs, b.nlast 321 */ 322 static inline const char *validate_comma(const char *c, struct ins_operands *ops) 323 { 324 if (ops->raw_comment && c > ops->raw_comment) 325 return NULL; 326 327 return c; 328 } 329 330 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 331 { 332 struct map *map = ms->map; 333 struct symbol *sym = ms->sym; 334 struct addr_map_symbol target = { 335 .ms = { .map = map, }, 336 }; 337 const char *c = strchr(ops->raw, ','); 338 u64 start, end; 339 340 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char); 341 c = validate_comma(c, ops); 342 343 /* 344 * Examples of lines to parse for the _cpp_lex_token@@Base 345 * function: 346 * 347 * 1159e6c: jne 115aa32 <_cpp_lex_token@@Base+0xf92> 348 * 1159e8b: jne c469be <cpp_named_operator2name@@Base+0xa72> 349 * 350 * The first is a jump to an offset inside the same function, 351 * the second is to another function, i.e. that 0xa72 is an 352 * offset in the cpp_named_operator2name@@base function. 353 */ 354 /* 355 * skip over possible up to 2 operands to get to address, e.g.: 356 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> 357 */ 358 if (c++ != NULL) { 359 ops->target.addr = strtoull(c, NULL, 16); 360 if (!ops->target.addr) { 361 c = strchr(c, ','); 362 c = validate_comma(c, ops); 363 if (c++ != NULL) 364 ops->target.addr = strtoull(c, NULL, 16); 365 } 366 } else { 367 ops->target.addr = strtoull(ops->raw, NULL, 16); 368 } 369 370 target.addr = map__objdump_2mem(map, ops->target.addr); 371 start = map->unmap_ip(map, sym->start), 372 end = map->unmap_ip(map, sym->end); 373 374 ops->target.outside = target.addr < start || target.addr > end; 375 376 /* 377 * FIXME: things like this in _cpp_lex_token (gcc's cc1 program): 378 379 cpp_named_operator2name@@Base+0xa72 380 381 * Point to a place that is after the cpp_named_operator2name 382 * boundaries, i.e. in the ELF symbol table for cc1 383 * cpp_named_operator2name is marked as being 32-bytes long, but it in 384 * fact is much larger than that, so we seem to need a symbols__find() 385 * routine that looks for >= current->start and < next_symbol->start, 386 * possibly just for C++ objects? 387 * 388 * For now lets just make some progress by marking jumps to outside the 389 * current function as call like. 390 * 391 * Actual navigation will come next, with further understanding of how 392 * the symbol searching and disassembly should be done. 393 */ 394 if (maps__find_ams(ms->maps, &target) == 0 && 395 map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) 396 ops->target.sym = target.ms.sym; 397 398 if (!ops->target.outside) { 399 ops->target.offset = target.addr - start; 400 ops->target.offset_avail = true; 401 } else { 402 ops->target.offset_avail = false; 403 } 404 405 return 0; 406 } 407 408 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 409 struct ins_operands *ops, int max_ins_name) 410 { 411 const char *c; 412 413 if (!ops->target.addr || ops->target.offset < 0) 414 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 415 416 if (ops->target.outside && ops->target.sym != NULL) 417 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name); 418 419 c = strchr(ops->raw, ','); 420 c = validate_comma(c, ops); 421 422 if (c != NULL) { 423 const char *c2 = strchr(c + 1, ','); 424 425 c2 = validate_comma(c2, ops); 426 /* check for 3-op insn */ 427 if (c2 != NULL) 428 c = c2; 429 c++; 430 431 /* mirror arch objdump's space-after-comma style */ 432 if (*c == ' ') 433 c++; 434 } 435 436 return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name, 437 ins->name, c ? c - ops->raw : 0, ops->raw, 438 ops->target.offset); 439 } 440 441 static struct ins_ops jump_ops = { 442 .parse = jump__parse, 443 .scnprintf = jump__scnprintf, 444 }; 445 446 bool ins__is_jump(const struct ins *ins) 447 { 448 return ins->ops == &jump_ops; 449 } 450 451 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 452 { 453 char *endptr, *name, *t; 454 455 if (strstr(raw, "(%rip)") == NULL) 456 return 0; 457 458 *addrp = strtoull(comment, &endptr, 16); 459 if (endptr == comment) 460 return 0; 461 name = strchr(endptr, '<'); 462 if (name == NULL) 463 return -1; 464 465 name++; 466 467 t = strchr(name, '>'); 468 if (t == NULL) 469 return 0; 470 471 *t = '\0'; 472 *namep = strdup(name); 473 *t = '>'; 474 475 return 0; 476 } 477 478 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms) 479 { 480 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 481 if (ops->locked.ops == NULL) 482 return 0; 483 484 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0) 485 goto out_free_ops; 486 487 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name); 488 489 if (ops->locked.ins.ops == NULL) 490 goto out_free_ops; 491 492 if (ops->locked.ins.ops->parse && 493 ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0) 494 goto out_free_ops; 495 496 return 0; 497 498 out_free_ops: 499 zfree(&ops->locked.ops); 500 return 0; 501 } 502 503 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 504 struct ins_operands *ops, int max_ins_name) 505 { 506 int printed; 507 508 if (ops->locked.ins.ops == NULL) 509 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name); 510 511 printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name); 512 return printed + ins__scnprintf(&ops->locked.ins, bf + printed, 513 size - printed, ops->locked.ops, max_ins_name); 514 } 515 516 static void lock__delete(struct ins_operands *ops) 517 { 518 struct ins *ins = &ops->locked.ins; 519 520 if (ins->ops && ins->ops->free) 521 ins->ops->free(ops->locked.ops); 522 else 523 ins__delete(ops->locked.ops); 524 525 zfree(&ops->locked.ops); 526 zfree(&ops->target.raw); 527 zfree(&ops->target.name); 528 } 529 530 static struct ins_ops lock_ops = { 531 .free = lock__delete, 532 .parse = lock__parse, 533 .scnprintf = lock__scnprintf, 534 }; 535 536 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 537 { 538 char *s = strchr(ops->raw, ','), *target, *comment, prev; 539 540 if (s == NULL) 541 return -1; 542 543 *s = '\0'; 544 ops->source.raw = strdup(ops->raw); 545 *s = ','; 546 547 if (ops->source.raw == NULL) 548 return -1; 549 550 target = ++s; 551 comment = strchr(s, arch->objdump.comment_char); 552 553 if (comment != NULL) 554 s = comment - 1; 555 else 556 s = strchr(s, '\0') - 1; 557 558 while (s > target && isspace(s[0])) 559 --s; 560 s++; 561 prev = *s; 562 *s = '\0'; 563 564 ops->target.raw = strdup(target); 565 *s = prev; 566 567 if (ops->target.raw == NULL) 568 goto out_free_source; 569 570 if (comment == NULL) 571 return 0; 572 573 comment = skip_spaces(comment); 574 comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name); 575 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 576 577 return 0; 578 579 out_free_source: 580 zfree(&ops->source.raw); 581 return -1; 582 } 583 584 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 585 struct ins_operands *ops, int max_ins_name) 586 { 587 return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name, 588 ops->source.name ?: ops->source.raw, 589 ops->target.name ?: ops->target.raw); 590 } 591 592 static struct ins_ops mov_ops = { 593 .parse = mov__parse, 594 .scnprintf = mov__scnprintf, 595 }; 596 597 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused) 598 { 599 char *target, *comment, *s, prev; 600 601 target = s = ops->raw; 602 603 while (s[0] != '\0' && !isspace(s[0])) 604 ++s; 605 prev = *s; 606 *s = '\0'; 607 608 ops->target.raw = strdup(target); 609 *s = prev; 610 611 if (ops->target.raw == NULL) 612 return -1; 613 614 comment = strchr(s, arch->objdump.comment_char); 615 if (comment == NULL) 616 return 0; 617 618 comment = skip_spaces(comment); 619 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name); 620 621 return 0; 622 } 623 624 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 625 struct ins_operands *ops, int max_ins_name) 626 { 627 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, 628 ops->target.name ?: ops->target.raw); 629 } 630 631 static struct ins_ops dec_ops = { 632 .parse = dec__parse, 633 .scnprintf = dec__scnprintf, 634 }; 635 636 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, 637 struct ins_operands *ops __maybe_unused, int max_ins_name) 638 { 639 return scnprintf(bf, size, "%-*s", max_ins_name, "nop"); 640 } 641 642 static struct ins_ops nop_ops = { 643 .scnprintf = nop__scnprintf, 644 }; 645 646 static struct ins_ops ret_ops = { 647 .scnprintf = ins__raw_scnprintf, 648 }; 649 650 bool ins__is_ret(const struct ins *ins) 651 { 652 return ins->ops == &ret_ops; 653 } 654 655 bool ins__is_lock(const struct ins *ins) 656 { 657 return ins->ops == &lock_ops; 658 } 659 660 static int ins__key_cmp(const void *name, const void *insp) 661 { 662 const struct ins *ins = insp; 663 664 return strcmp(name, ins->name); 665 } 666 667 static int ins__cmp(const void *a, const void *b) 668 { 669 const struct ins *ia = a; 670 const struct ins *ib = b; 671 672 return strcmp(ia->name, ib->name); 673 } 674 675 static void ins__sort(struct arch *arch) 676 { 677 const int nmemb = arch->nr_instructions; 678 679 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp); 680 } 681 682 static struct ins_ops *__ins__find(struct arch *arch, const char *name) 683 { 684 struct ins *ins; 685 const int nmemb = arch->nr_instructions; 686 687 if (!arch->sorted_instructions) { 688 ins__sort(arch); 689 arch->sorted_instructions = true; 690 } 691 692 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp); 693 return ins ? ins->ops : NULL; 694 } 695 696 static struct ins_ops *ins__find(struct arch *arch, const char *name) 697 { 698 struct ins_ops *ops = __ins__find(arch, name); 699 700 if (!ops && arch->associate_instruction_ops) 701 ops = arch->associate_instruction_ops(arch, name); 702 703 return ops; 704 } 705 706 static int arch__key_cmp(const void *name, const void *archp) 707 { 708 const struct arch *arch = archp; 709 710 return strcmp(name, arch->name); 711 } 712 713 static int arch__cmp(const void *a, const void *b) 714 { 715 const struct arch *aa = a; 716 const struct arch *ab = b; 717 718 return strcmp(aa->name, ab->name); 719 } 720 721 static void arch__sort(void) 722 { 723 const int nmemb = ARRAY_SIZE(architectures); 724 725 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); 726 } 727 728 static struct arch *arch__find(const char *name) 729 { 730 const int nmemb = ARRAY_SIZE(architectures); 731 static bool sorted; 732 733 if (!sorted) { 734 arch__sort(); 735 sorted = true; 736 } 737 738 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); 739 } 740 741 static struct annotated_source *annotated_source__new(void) 742 { 743 struct annotated_source *src = zalloc(sizeof(*src)); 744 745 if (src != NULL) 746 INIT_LIST_HEAD(&src->source); 747 748 return src; 749 } 750 751 static __maybe_unused void annotated_source__delete(struct annotated_source *src) 752 { 753 if (src == NULL) 754 return; 755 zfree(&src->histograms); 756 zfree(&src->cycles_hist); 757 free(src); 758 } 759 760 static int annotated_source__alloc_histograms(struct annotated_source *src, 761 size_t size, int nr_hists) 762 { 763 size_t sizeof_sym_hist; 764 765 /* 766 * Add buffer of one element for zero length symbol. 767 * When sample is taken from first instruction of 768 * zero length symbol, perf still resolves it and 769 * shows symbol name in perf report and allows to 770 * annotate it. 771 */ 772 if (size == 0) 773 size = 1; 774 775 /* Check for overflow when calculating sizeof_sym_hist */ 776 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) 777 return -1; 778 779 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); 780 781 /* Check for overflow in zalloc argument */ 782 if (sizeof_sym_hist > SIZE_MAX / nr_hists) 783 return -1; 784 785 src->sizeof_sym_hist = sizeof_sym_hist; 786 src->nr_histograms = nr_hists; 787 src->histograms = calloc(nr_hists, sizeof_sym_hist) ; 788 return src->histograms ? 0 : -1; 789 } 790 791 /* The cycles histogram is lazily allocated. */ 792 static int symbol__alloc_hist_cycles(struct symbol *sym) 793 { 794 struct annotation *notes = symbol__annotation(sym); 795 const size_t size = symbol__size(sym); 796 797 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist)); 798 if (notes->src->cycles_hist == NULL) 799 return -1; 800 return 0; 801 } 802 803 void symbol__annotate_zero_histograms(struct symbol *sym) 804 { 805 struct annotation *notes = symbol__annotation(sym); 806 807 pthread_mutex_lock(¬es->lock); 808 if (notes->src != NULL) { 809 memset(notes->src->histograms, 0, 810 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 811 if (notes->src->cycles_hist) 812 memset(notes->src->cycles_hist, 0, 813 symbol__size(sym) * sizeof(struct cyc_hist)); 814 } 815 pthread_mutex_unlock(¬es->lock); 816 } 817 818 static int __symbol__account_cycles(struct cyc_hist *ch, 819 u64 start, 820 unsigned offset, unsigned cycles, 821 unsigned have_start) 822 { 823 /* 824 * For now we can only account one basic block per 825 * final jump. But multiple could be overlapping. 826 * Always account the longest one. So when 827 * a shorter one has been already seen throw it away. 828 * 829 * We separately always account the full cycles. 830 */ 831 ch[offset].num_aggr++; 832 ch[offset].cycles_aggr += cycles; 833 834 if (cycles > ch[offset].cycles_max) 835 ch[offset].cycles_max = cycles; 836 837 if (ch[offset].cycles_min) { 838 if (cycles && cycles < ch[offset].cycles_min) 839 ch[offset].cycles_min = cycles; 840 } else 841 ch[offset].cycles_min = cycles; 842 843 if (!have_start && ch[offset].have_start) 844 return 0; 845 if (ch[offset].num) { 846 if (have_start && (!ch[offset].have_start || 847 ch[offset].start > start)) { 848 ch[offset].have_start = 0; 849 ch[offset].cycles = 0; 850 ch[offset].num = 0; 851 if (ch[offset].reset < 0xffff) 852 ch[offset].reset++; 853 } else if (have_start && 854 ch[offset].start < start) 855 return 0; 856 } 857 858 if (ch[offset].num < NUM_SPARKS) 859 ch[offset].cycles_spark[ch[offset].num] = cycles; 860 861 ch[offset].have_start = have_start; 862 ch[offset].start = start; 863 ch[offset].cycles += cycles; 864 ch[offset].num++; 865 return 0; 866 } 867 868 static int __symbol__inc_addr_samples(struct map_symbol *ms, 869 struct annotated_source *src, int evidx, u64 addr, 870 struct perf_sample *sample) 871 { 872 struct symbol *sym = ms->sym; 873 unsigned offset; 874 struct sym_hist *h; 875 876 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr)); 877 878 if ((addr < sym->start || addr >= sym->end) && 879 (addr != sym->end || sym->start != sym->end)) { 880 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", 881 __func__, __LINE__, sym->name, sym->start, addr, sym->end); 882 return -ERANGE; 883 } 884 885 offset = addr - sym->start; 886 h = annotated_source__histogram(src, evidx); 887 if (h == NULL) { 888 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n", 889 __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC); 890 return -ENOMEM; 891 } 892 h->nr_samples++; 893 h->addr[offset].nr_samples++; 894 h->period += sample->period; 895 h->addr[offset].period += sample->period; 896 897 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 898 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", 899 sym->start, sym->name, addr, addr - sym->start, evidx, 900 h->addr[offset].nr_samples, h->addr[offset].period); 901 return 0; 902 } 903 904 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym) 905 { 906 struct annotation *notes = symbol__annotation(sym); 907 908 if (notes->src == NULL) { 909 notes->src = annotated_source__new(); 910 if (notes->src == NULL) 911 return NULL; 912 goto alloc_cycles_hist; 913 } 914 915 if (!notes->src->cycles_hist) { 916 alloc_cycles_hist: 917 symbol__alloc_hist_cycles(sym); 918 } 919 920 return notes->src->cycles_hist; 921 } 922 923 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists) 924 { 925 struct annotation *notes = symbol__annotation(sym); 926 927 if (notes->src == NULL) { 928 notes->src = annotated_source__new(); 929 if (notes->src == NULL) 930 return NULL; 931 goto alloc_histograms; 932 } 933 934 if (notes->src->histograms == NULL) { 935 alloc_histograms: 936 annotated_source__alloc_histograms(notes->src, symbol__size(sym), 937 nr_hists); 938 } 939 940 return notes->src; 941 } 942 943 static int symbol__inc_addr_samples(struct map_symbol *ms, 944 struct evsel *evsel, u64 addr, 945 struct perf_sample *sample) 946 { 947 struct symbol *sym = ms->sym; 948 struct annotated_source *src; 949 950 if (sym == NULL) 951 return 0; 952 src = symbol__hists(sym, evsel->evlist->core.nr_entries); 953 return src ? __symbol__inc_addr_samples(ms, src, evsel->idx, addr, sample) : 0; 954 } 955 956 static int symbol__account_cycles(u64 addr, u64 start, 957 struct symbol *sym, unsigned cycles) 958 { 959 struct cyc_hist *cycles_hist; 960 unsigned offset; 961 962 if (sym == NULL) 963 return 0; 964 cycles_hist = symbol__cycles_hist(sym); 965 if (cycles_hist == NULL) 966 return -ENOMEM; 967 if (addr < sym->start || addr >= sym->end) 968 return -ERANGE; 969 970 if (start) { 971 if (start < sym->start || start >= sym->end) 972 return -ERANGE; 973 if (start >= addr) 974 start = 0; 975 } 976 offset = addr - sym->start; 977 return __symbol__account_cycles(cycles_hist, 978 start ? start - sym->start : 0, 979 offset, cycles, 980 !!start); 981 } 982 983 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 984 struct addr_map_symbol *start, 985 unsigned cycles) 986 { 987 u64 saddr = 0; 988 int err; 989 990 if (!cycles) 991 return 0; 992 993 /* 994 * Only set start when IPC can be computed. We can only 995 * compute it when the basic block is completely in a single 996 * function. 997 * Special case the case when the jump is elsewhere, but 998 * it starts on the function start. 999 */ 1000 if (start && 1001 (start->ms.sym == ams->ms.sym || 1002 (ams->ms.sym && 1003 start->addr == ams->ms.sym->start + ams->ms.map->start))) 1004 saddr = start->al_addr; 1005 if (saddr == 0) 1006 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", 1007 ams->addr, 1008 start ? start->addr : 0, 1009 ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0, 1010 saddr); 1011 err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles); 1012 if (err) 1013 pr_debug2("account_cycles failed %d\n", err); 1014 return err; 1015 } 1016 1017 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end) 1018 { 1019 unsigned n_insn = 0; 1020 u64 offset; 1021 1022 for (offset = start; offset <= end; offset++) { 1023 if (notes->offsets[offset]) 1024 n_insn++; 1025 } 1026 return n_insn; 1027 } 1028 1029 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch) 1030 { 1031 unsigned n_insn; 1032 unsigned int cover_insn = 0; 1033 u64 offset; 1034 1035 n_insn = annotation__count_insn(notes, start, end); 1036 if (n_insn && ch->num && ch->cycles) { 1037 float ipc = n_insn / ((double)ch->cycles / (double)ch->num); 1038 1039 /* Hide data when there are too many overlaps. */ 1040 if (ch->reset >= 0x7fff) 1041 return; 1042 1043 for (offset = start; offset <= end; offset++) { 1044 struct annotation_line *al = notes->offsets[offset]; 1045 1046 if (al && al->ipc == 0.0) { 1047 al->ipc = ipc; 1048 cover_insn++; 1049 } 1050 } 1051 1052 if (cover_insn) { 1053 notes->hit_cycles += ch->cycles; 1054 notes->hit_insn += n_insn * ch->num; 1055 notes->cover_insn += cover_insn; 1056 } 1057 } 1058 } 1059 1060 void annotation__compute_ipc(struct annotation *notes, size_t size) 1061 { 1062 s64 offset; 1063 1064 if (!notes->src || !notes->src->cycles_hist) 1065 return; 1066 1067 notes->total_insn = annotation__count_insn(notes, 0, size - 1); 1068 notes->hit_cycles = 0; 1069 notes->hit_insn = 0; 1070 notes->cover_insn = 0; 1071 1072 pthread_mutex_lock(¬es->lock); 1073 for (offset = size - 1; offset >= 0; --offset) { 1074 struct cyc_hist *ch; 1075 1076 ch = ¬es->src->cycles_hist[offset]; 1077 if (ch && ch->cycles) { 1078 struct annotation_line *al; 1079 1080 if (ch->have_start) 1081 annotation__count_and_fill(notes, ch->start, offset, ch); 1082 al = notes->offsets[offset]; 1083 if (al && ch->num_aggr) { 1084 al->cycles = ch->cycles_aggr / ch->num_aggr; 1085 al->cycles_max = ch->cycles_max; 1086 al->cycles_min = ch->cycles_min; 1087 } 1088 notes->have_cycles = true; 1089 } 1090 } 1091 pthread_mutex_unlock(¬es->lock); 1092 } 1093 1094 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 1095 struct evsel *evsel) 1096 { 1097 return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample); 1098 } 1099 1100 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 1101 struct evsel *evsel, u64 ip) 1102 { 1103 return symbol__inc_addr_samples(&he->ms, evsel, ip, sample); 1104 } 1105 1106 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms) 1107 { 1108 dl->ins.ops = ins__find(arch, dl->ins.name); 1109 1110 if (!dl->ins.ops) 1111 return; 1112 1113 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0) 1114 dl->ins.ops = NULL; 1115 } 1116 1117 static int disasm_line__parse(char *line, const char **namep, char **rawp) 1118 { 1119 char tmp, *name = skip_spaces(line); 1120 1121 if (name[0] == '\0') 1122 return -1; 1123 1124 *rawp = name + 1; 1125 1126 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 1127 ++*rawp; 1128 1129 tmp = (*rawp)[0]; 1130 (*rawp)[0] = '\0'; 1131 *namep = strdup(name); 1132 1133 if (*namep == NULL) 1134 goto out; 1135 1136 (*rawp)[0] = tmp; 1137 *rawp = strim(*rawp); 1138 1139 return 0; 1140 1141 out: 1142 return -1; 1143 } 1144 1145 struct annotate_args { 1146 size_t privsize; 1147 struct arch *arch; 1148 struct map_symbol ms; 1149 struct evsel *evsel; 1150 struct annotation_options *options; 1151 s64 offset; 1152 char *line; 1153 int line_nr; 1154 }; 1155 1156 static void annotation_line__delete(struct annotation_line *al) 1157 { 1158 void *ptr = (void *) al - al->privsize; 1159 1160 free_srcline(al->path); 1161 zfree(&al->line); 1162 free(ptr); 1163 } 1164 1165 /* 1166 * Allocating the annotation line data with following 1167 * structure: 1168 * 1169 * -------------------------------------- 1170 * private space | struct annotation_line 1171 * -------------------------------------- 1172 * 1173 * Size of the private space is stored in 'struct annotation_line'. 1174 * 1175 */ 1176 static struct annotation_line * 1177 annotation_line__new(struct annotate_args *args, size_t privsize) 1178 { 1179 struct annotation_line *al; 1180 struct evsel *evsel = args->evsel; 1181 size_t size = privsize + sizeof(*al); 1182 int nr = 1; 1183 1184 if (perf_evsel__is_group_event(evsel)) 1185 nr = evsel->core.nr_members; 1186 1187 size += sizeof(al->data[0]) * nr; 1188 1189 al = zalloc(size); 1190 if (al) { 1191 al = (void *) al + privsize; 1192 al->privsize = privsize; 1193 al->offset = args->offset; 1194 al->line = strdup(args->line); 1195 al->line_nr = args->line_nr; 1196 al->data_nr = nr; 1197 } 1198 1199 return al; 1200 } 1201 1202 /* 1203 * Allocating the disasm annotation line data with 1204 * following structure: 1205 * 1206 * ------------------------------------------------------------ 1207 * privsize space | struct disasm_line | struct annotation_line 1208 * ------------------------------------------------------------ 1209 * 1210 * We have 'struct annotation_line' member as last member 1211 * of 'struct disasm_line' to have an easy access. 1212 * 1213 */ 1214 static struct disasm_line *disasm_line__new(struct annotate_args *args) 1215 { 1216 struct disasm_line *dl = NULL; 1217 struct annotation_line *al; 1218 size_t privsize = args->privsize + offsetof(struct disasm_line, al); 1219 1220 al = annotation_line__new(args, privsize); 1221 if (al != NULL) { 1222 dl = disasm_line(al); 1223 1224 if (dl->al.line == NULL) 1225 goto out_delete; 1226 1227 if (args->offset != -1) { 1228 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0) 1229 goto out_free_line; 1230 1231 disasm_line__init_ins(dl, args->arch, &args->ms); 1232 } 1233 } 1234 1235 return dl; 1236 1237 out_free_line: 1238 zfree(&dl->al.line); 1239 out_delete: 1240 free(dl); 1241 return NULL; 1242 } 1243 1244 void disasm_line__free(struct disasm_line *dl) 1245 { 1246 if (dl->ins.ops && dl->ins.ops->free) 1247 dl->ins.ops->free(&dl->ops); 1248 else 1249 ins__delete(&dl->ops); 1250 zfree(&dl->ins.name); 1251 annotation_line__delete(&dl->al); 1252 } 1253 1254 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name) 1255 { 1256 if (raw || !dl->ins.ops) 1257 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw); 1258 1259 return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name); 1260 } 1261 1262 static void annotation_line__add(struct annotation_line *al, struct list_head *head) 1263 { 1264 list_add_tail(&al->node, head); 1265 } 1266 1267 struct annotation_line * 1268 annotation_line__next(struct annotation_line *pos, struct list_head *head) 1269 { 1270 list_for_each_entry_continue(pos, head, node) 1271 if (pos->offset >= 0) 1272 return pos; 1273 1274 return NULL; 1275 } 1276 1277 static const char *annotate__address_color(struct block_range *br) 1278 { 1279 double cov = block_range__coverage(br); 1280 1281 if (cov >= 0) { 1282 /* mark red for >75% coverage */ 1283 if (cov > 0.75) 1284 return PERF_COLOR_RED; 1285 1286 /* mark dull for <1% coverage */ 1287 if (cov < 0.01) 1288 return PERF_COLOR_NORMAL; 1289 } 1290 1291 return PERF_COLOR_MAGENTA; 1292 } 1293 1294 static const char *annotate__asm_color(struct block_range *br) 1295 { 1296 double cov = block_range__coverage(br); 1297 1298 if (cov >= 0) { 1299 /* mark dull for <1% coverage */ 1300 if (cov < 0.01) 1301 return PERF_COLOR_NORMAL; 1302 } 1303 1304 return PERF_COLOR_BLUE; 1305 } 1306 1307 static void annotate__branch_printf(struct block_range *br, u64 addr) 1308 { 1309 bool emit_comment = true; 1310 1311 if (!br) 1312 return; 1313 1314 #if 1 1315 if (br->is_target && br->start == addr) { 1316 struct block_range *branch = br; 1317 double p; 1318 1319 /* 1320 * Find matching branch to our target. 1321 */ 1322 while (!branch->is_branch) 1323 branch = block_range__next(branch); 1324 1325 p = 100 *(double)br->entry / branch->coverage; 1326 1327 if (p > 0.1) { 1328 if (emit_comment) { 1329 emit_comment = false; 1330 printf("\t#"); 1331 } 1332 1333 /* 1334 * The percentage of coverage joined at this target in relation 1335 * to the next branch. 1336 */ 1337 printf(" +%.2f%%", p); 1338 } 1339 } 1340 #endif 1341 if (br->is_branch && br->end == addr) { 1342 double p = 100*(double)br->taken / br->coverage; 1343 1344 if (p > 0.1) { 1345 if (emit_comment) { 1346 emit_comment = false; 1347 printf("\t#"); 1348 } 1349 1350 /* 1351 * The percentage of coverage leaving at this branch, and 1352 * its prediction ratio. 1353 */ 1354 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); 1355 } 1356 } 1357 } 1358 1359 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width) 1360 { 1361 s64 offset = dl->al.offset; 1362 const u64 addr = start + offset; 1363 struct block_range *br; 1364 1365 br = block_range__find(addr); 1366 color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr); 1367 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line); 1368 annotate__branch_printf(br, addr); 1369 return 0; 1370 } 1371 1372 static int 1373 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, 1374 struct evsel *evsel, u64 len, int min_pcnt, int printed, 1375 int max_lines, struct annotation_line *queue, int addr_fmt_width, 1376 int percent_type) 1377 { 1378 struct disasm_line *dl = container_of(al, struct disasm_line, al); 1379 static const char *prev_line; 1380 static const char *prev_color; 1381 1382 if (al->offset != -1) { 1383 double max_percent = 0.0; 1384 int i, nr_percent = 1; 1385 const char *color; 1386 struct annotation *notes = symbol__annotation(sym); 1387 1388 for (i = 0; i < al->data_nr; i++) { 1389 double percent; 1390 1391 percent = annotation_data__percent(&al->data[i], 1392 percent_type); 1393 1394 if (percent > max_percent) 1395 max_percent = percent; 1396 } 1397 1398 if (al->data_nr > nr_percent) 1399 nr_percent = al->data_nr; 1400 1401 if (max_percent < min_pcnt) 1402 return -1; 1403 1404 if (max_lines && printed >= max_lines) 1405 return 1; 1406 1407 if (queue != NULL) { 1408 list_for_each_entry_from(queue, ¬es->src->source, node) { 1409 if (queue == al) 1410 break; 1411 annotation_line__print(queue, sym, start, evsel, len, 1412 0, 0, 1, NULL, addr_fmt_width, 1413 percent_type); 1414 } 1415 } 1416 1417 color = get_percent_color(max_percent); 1418 1419 /* 1420 * Also color the filename and line if needed, with 1421 * the same color than the percentage. Don't print it 1422 * twice for close colored addr with the same filename:line 1423 */ 1424 if (al->path) { 1425 if (!prev_line || strcmp(prev_line, al->path) 1426 || color != prev_color) { 1427 color_fprintf(stdout, color, " %s", al->path); 1428 prev_line = al->path; 1429 prev_color = color; 1430 } 1431 } 1432 1433 for (i = 0; i < nr_percent; i++) { 1434 struct annotation_data *data = &al->data[i]; 1435 double percent; 1436 1437 percent = annotation_data__percent(data, percent_type); 1438 color = get_percent_color(percent); 1439 1440 if (symbol_conf.show_total_period) 1441 color_fprintf(stdout, color, " %11" PRIu64, 1442 data->he.period); 1443 else if (symbol_conf.show_nr_samples) 1444 color_fprintf(stdout, color, " %7" PRIu64, 1445 data->he.nr_samples); 1446 else 1447 color_fprintf(stdout, color, " %7.2f", percent); 1448 } 1449 1450 printf(" : "); 1451 1452 disasm_line__print(dl, start, addr_fmt_width); 1453 printf("\n"); 1454 } else if (max_lines && printed >= max_lines) 1455 return 1; 1456 else { 1457 int width = symbol_conf.show_total_period ? 12 : 8; 1458 1459 if (queue) 1460 return -1; 1461 1462 if (perf_evsel__is_group_event(evsel)) 1463 width *= evsel->core.nr_members; 1464 1465 if (!*al->line) 1466 printf(" %*s:\n", width, " "); 1467 else 1468 printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->line); 1469 } 1470 1471 return 0; 1472 } 1473 1474 /* 1475 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) 1476 * which looks like following 1477 * 1478 * 0000000000415500 <_init>: 1479 * 415500: sub $0x8,%rsp 1480 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> 1481 * 41550b: test %rax,%rax 1482 * 41550e: je 415515 <_init+0x15> 1483 * 415510: callq 416e70 <__gmon_start__@plt> 1484 * 415515: add $0x8,%rsp 1485 * 415519: retq 1486 * 1487 * it will be parsed and saved into struct disasm_line as 1488 * <offset> <name> <ops.raw> 1489 * 1490 * The offset will be a relative offset from the start of the symbol and -1 1491 * means that it's not a disassembly line so should be treated differently. 1492 * The ops.raw part will be parsed further according to type of the instruction. 1493 */ 1494 static int symbol__parse_objdump_line(struct symbol *sym, 1495 struct annotate_args *args, 1496 char *parsed_line, int *line_nr) 1497 { 1498 struct map *map = args->ms.map; 1499 struct annotation *notes = symbol__annotation(sym); 1500 struct disasm_line *dl; 1501 char *tmp; 1502 s64 line_ip, offset = -1; 1503 regmatch_t match[2]; 1504 1505 /* /filename:linenr ? Save line number and ignore. */ 1506 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { 1507 *line_nr = atoi(parsed_line + match[1].rm_so); 1508 return 0; 1509 } 1510 1511 /* Process hex address followed by ':'. */ 1512 line_ip = strtoull(parsed_line, &tmp, 16); 1513 if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') { 1514 u64 start = map__rip_2objdump(map, sym->start), 1515 end = map__rip_2objdump(map, sym->end); 1516 1517 offset = line_ip - start; 1518 if ((u64)line_ip < start || (u64)line_ip >= end) 1519 offset = -1; 1520 else 1521 parsed_line = tmp + 1; 1522 } 1523 1524 args->offset = offset; 1525 args->line = parsed_line; 1526 args->line_nr = *line_nr; 1527 args->ms.sym = sym; 1528 1529 dl = disasm_line__new(args); 1530 (*line_nr)++; 1531 1532 if (dl == NULL) 1533 return -1; 1534 1535 if (!disasm_line__has_local_offset(dl)) { 1536 dl->ops.target.offset = dl->ops.target.addr - 1537 map__rip_2objdump(map, sym->start); 1538 dl->ops.target.offset_avail = true; 1539 } 1540 1541 /* kcore has no symbols, so add the call target symbol */ 1542 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) { 1543 struct addr_map_symbol target = { 1544 .addr = dl->ops.target.addr, 1545 .ms = { .map = map, }, 1546 }; 1547 1548 if (!maps__find_ams(args->ms.maps, &target) && 1549 target.ms.sym->start == target.al_addr) 1550 dl->ops.target.sym = target.ms.sym; 1551 } 1552 1553 annotation_line__add(&dl->al, ¬es->src->source); 1554 1555 return 0; 1556 } 1557 1558 static __attribute__((constructor)) void symbol__init_regexpr(void) 1559 { 1560 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); 1561 } 1562 1563 static void delete_last_nop(struct symbol *sym) 1564 { 1565 struct annotation *notes = symbol__annotation(sym); 1566 struct list_head *list = ¬es->src->source; 1567 struct disasm_line *dl; 1568 1569 while (!list_empty(list)) { 1570 dl = list_entry(list->prev, struct disasm_line, al.node); 1571 1572 if (dl->ins.ops) { 1573 if (dl->ins.ops != &nop_ops) 1574 return; 1575 } else { 1576 if (!strstr(dl->al.line, " nop ") && 1577 !strstr(dl->al.line, " nopl ") && 1578 !strstr(dl->al.line, " nopw ")) 1579 return; 1580 } 1581 1582 list_del_init(&dl->al.node); 1583 disasm_line__free(dl); 1584 } 1585 } 1586 1587 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen) 1588 { 1589 struct dso *dso = ms->map->dso; 1590 1591 BUG_ON(buflen == 0); 1592 1593 if (errnum >= 0) { 1594 str_error_r(errnum, buf, buflen); 1595 return 0; 1596 } 1597 1598 switch (errnum) { 1599 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: { 1600 char bf[SBUILD_ID_SIZE + 15] = " with build id "; 1601 char *build_id_msg = NULL; 1602 1603 if (dso->has_build_id) { 1604 build_id__sprintf(dso->build_id, 1605 sizeof(dso->build_id), bf + 15); 1606 build_id_msg = bf; 1607 } 1608 scnprintf(buf, buflen, 1609 "No vmlinux file%s\nwas found in the path.\n\n" 1610 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n" 1611 "Please use:\n\n" 1612 " perf buildid-cache -vu vmlinux\n\n" 1613 "or:\n\n" 1614 " --vmlinux vmlinux\n", build_id_msg ?: ""); 1615 } 1616 break; 1617 case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF: 1618 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation"); 1619 break; 1620 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP: 1621 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions."); 1622 break; 1623 case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING: 1624 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization."); 1625 break; 1626 case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE: 1627 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name); 1628 break; 1629 case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF: 1630 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.", 1631 dso->long_name); 1632 break; 1633 default: 1634 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum); 1635 break; 1636 } 1637 1638 return 0; 1639 } 1640 1641 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size) 1642 { 1643 char linkname[PATH_MAX]; 1644 char *build_id_filename; 1645 char *build_id_path = NULL; 1646 char *pos; 1647 1648 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && 1649 !dso__is_kcore(dso)) 1650 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX; 1651 1652 build_id_filename = dso__build_id_filename(dso, NULL, 0, false); 1653 if (build_id_filename) { 1654 __symbol__join_symfs(filename, filename_size, build_id_filename); 1655 free(build_id_filename); 1656 } else { 1657 if (dso->has_build_id) 1658 return ENOMEM; 1659 goto fallback; 1660 } 1661 1662 build_id_path = strdup(filename); 1663 if (!build_id_path) 1664 return ENOMEM; 1665 1666 /* 1667 * old style build-id cache has name of XX/XXXXXXX.. while 1668 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}. 1669 * extract the build-id part of dirname in the new style only. 1670 */ 1671 pos = strrchr(build_id_path, '/'); 1672 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2) 1673 dirname(build_id_path); 1674 1675 if (dso__is_kcore(dso) || 1676 readlink(build_id_path, linkname, sizeof(linkname)) < 0 || 1677 strstr(linkname, DSO__NAME_KALLSYMS) || 1678 access(filename, R_OK)) { 1679 fallback: 1680 /* 1681 * If we don't have build-ids or the build-id file isn't in the 1682 * cache, or is just a kallsyms file, well, lets hope that this 1683 * DSO is the same as when 'perf record' ran. 1684 */ 1685 __symbol__join_symfs(filename, filename_size, dso->long_name); 1686 } 1687 1688 free(build_id_path); 1689 return 0; 1690 } 1691 1692 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1693 #define PACKAGE "perf" 1694 #include <bfd.h> 1695 #include <dis-asm.h> 1696 1697 static int symbol__disassemble_bpf(struct symbol *sym, 1698 struct annotate_args *args) 1699 { 1700 struct annotation *notes = symbol__annotation(sym); 1701 struct annotation_options *opts = args->options; 1702 struct bpf_prog_info_linear *info_linear; 1703 struct bpf_prog_linfo *prog_linfo = NULL; 1704 struct bpf_prog_info_node *info_node; 1705 int len = sym->end - sym->start; 1706 disassembler_ftype disassemble; 1707 struct map *map = args->ms.map; 1708 struct disassemble_info info; 1709 struct dso *dso = map->dso; 1710 int pc = 0, count, sub_id; 1711 struct btf *btf = NULL; 1712 char tpath[PATH_MAX]; 1713 size_t buf_size; 1714 int nr_skip = 0; 1715 char *buf; 1716 bfd *bfdf; 1717 int ret; 1718 FILE *s; 1719 1720 if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO) 1721 return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE; 1722 1723 pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__, 1724 sym->name, sym->start, sym->end - sym->start); 1725 1726 memset(tpath, 0, sizeof(tpath)); 1727 perf_exe(tpath, sizeof(tpath)); 1728 1729 bfdf = bfd_openr(tpath, NULL); 1730 assert(bfdf); 1731 assert(bfd_check_format(bfdf, bfd_object)); 1732 1733 s = open_memstream(&buf, &buf_size); 1734 if (!s) { 1735 ret = errno; 1736 goto out; 1737 } 1738 init_disassemble_info(&info, s, 1739 (fprintf_ftype) fprintf); 1740 1741 info.arch = bfd_get_arch(bfdf); 1742 info.mach = bfd_get_mach(bfdf); 1743 1744 info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env, 1745 dso->bpf_prog.id); 1746 if (!info_node) { 1747 ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF; 1748 goto out; 1749 } 1750 info_linear = info_node->info_linear; 1751 sub_id = dso->bpf_prog.sub_id; 1752 1753 info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns); 1754 info.buffer_length = info_linear->info.jited_prog_len; 1755 1756 if (info_linear->info.nr_line_info) 1757 prog_linfo = bpf_prog_linfo__new(&info_linear->info); 1758 1759 if (info_linear->info.btf_id) { 1760 struct btf_node *node; 1761 1762 node = perf_env__find_btf(dso->bpf_prog.env, 1763 info_linear->info.btf_id); 1764 if (node) 1765 btf = btf__new((__u8 *)(node->data), 1766 node->data_size); 1767 } 1768 1769 disassemble_init_for_target(&info); 1770 1771 #ifdef DISASM_FOUR_ARGS_SIGNATURE 1772 disassemble = disassembler(info.arch, 1773 bfd_big_endian(bfdf), 1774 info.mach, 1775 bfdf); 1776 #else 1777 disassemble = disassembler(bfdf); 1778 #endif 1779 assert(disassemble); 1780 1781 fflush(s); 1782 do { 1783 const struct bpf_line_info *linfo = NULL; 1784 struct disasm_line *dl; 1785 size_t prev_buf_size; 1786 const char *srcline; 1787 u64 addr; 1788 1789 addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id]; 1790 count = disassemble(pc, &info); 1791 1792 if (prog_linfo) 1793 linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo, 1794 addr, sub_id, 1795 nr_skip); 1796 1797 if (linfo && btf) { 1798 srcline = btf__name_by_offset(btf, linfo->line_off); 1799 nr_skip++; 1800 } else 1801 srcline = NULL; 1802 1803 fprintf(s, "\n"); 1804 prev_buf_size = buf_size; 1805 fflush(s); 1806 1807 if (!opts->hide_src_code && srcline) { 1808 args->offset = -1; 1809 args->line = strdup(srcline); 1810 args->line_nr = 0; 1811 args->ms.sym = sym; 1812 dl = disasm_line__new(args); 1813 if (dl) { 1814 annotation_line__add(&dl->al, 1815 ¬es->src->source); 1816 } 1817 } 1818 1819 args->offset = pc; 1820 args->line = buf + prev_buf_size; 1821 args->line_nr = 0; 1822 args->ms.sym = sym; 1823 dl = disasm_line__new(args); 1824 if (dl) 1825 annotation_line__add(&dl->al, ¬es->src->source); 1826 1827 pc += count; 1828 } while (count > 0 && pc < len); 1829 1830 ret = 0; 1831 out: 1832 free(prog_linfo); 1833 free(btf); 1834 fclose(s); 1835 bfd_close(bfdf); 1836 return ret; 1837 } 1838 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1839 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused, 1840 struct annotate_args *args __maybe_unused) 1841 { 1842 return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF; 1843 } 1844 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT) 1845 1846 /* 1847 * Possibly create a new version of line with tabs expanded. Returns the 1848 * existing or new line, storage is updated if a new line is allocated. If 1849 * allocation fails then NULL is returned. 1850 */ 1851 static char *expand_tabs(char *line, char **storage, size_t *storage_len) 1852 { 1853 size_t i, src, dst, len, new_storage_len, num_tabs; 1854 char *new_line; 1855 size_t line_len = strlen(line); 1856 1857 for (num_tabs = 0, i = 0; i < line_len; i++) 1858 if (line[i] == '\t') 1859 num_tabs++; 1860 1861 if (num_tabs == 0) 1862 return line; 1863 1864 /* 1865 * Space for the line and '\0', less the leading and trailing 1866 * spaces. Each tab may introduce 7 additional spaces. 1867 */ 1868 new_storage_len = line_len + 1 + (num_tabs * 7); 1869 1870 new_line = malloc(new_storage_len); 1871 if (new_line == NULL) { 1872 pr_err("Failure allocating memory for tab expansion\n"); 1873 return NULL; 1874 } 1875 1876 /* 1877 * Copy regions starting at src and expand tabs. If there are two 1878 * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces 1879 * are inserted. 1880 */ 1881 for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) { 1882 if (line[i] == '\t') { 1883 len = i - src; 1884 memcpy(&new_line[dst], &line[src], len); 1885 dst += len; 1886 new_line[dst++] = ' '; 1887 while (dst % 8 != 0) 1888 new_line[dst++] = ' '; 1889 src = i + 1; 1890 num_tabs--; 1891 } 1892 } 1893 1894 /* Expand the last region. */ 1895 len = line_len - src; 1896 memcpy(&new_line[dst], &line[src], len); 1897 dst += len; 1898 new_line[dst] = '\0'; 1899 1900 free(*storage); 1901 *storage = new_line; 1902 *storage_len = new_storage_len; 1903 return new_line; 1904 1905 } 1906 1907 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args) 1908 { 1909 struct annotation_options *opts = args->options; 1910 struct map *map = args->ms.map; 1911 struct dso *dso = map->dso; 1912 char *command; 1913 FILE *file; 1914 char symfs_filename[PATH_MAX]; 1915 struct kcore_extract kce; 1916 bool delete_extract = false; 1917 bool decomp = false; 1918 int lineno = 0; 1919 int nline; 1920 char *line; 1921 size_t line_len; 1922 const char *objdump_argv[] = { 1923 "/bin/sh", 1924 "-c", 1925 NULL, /* Will be the objdump command to run. */ 1926 "--", 1927 NULL, /* Will be the symfs path. */ 1928 NULL, 1929 }; 1930 struct child_process objdump_process; 1931 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename)); 1932 1933 if (err) 1934 return err; 1935 1936 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 1937 symfs_filename, sym->name, map->unmap_ip(map, sym->start), 1938 map->unmap_ip(map, sym->end)); 1939 1940 pr_debug("annotating [%p] %30s : [%p] %30s\n", 1941 dso, dso->long_name, sym, sym->name); 1942 1943 if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) { 1944 return symbol__disassemble_bpf(sym, args); 1945 } else if (dso__is_kcore(dso)) { 1946 kce.kcore_filename = symfs_filename; 1947 kce.addr = map__rip_2objdump(map, sym->start); 1948 kce.offs = sym->start; 1949 kce.len = sym->end - sym->start; 1950 if (!kcore_extract__create(&kce)) { 1951 delete_extract = true; 1952 strlcpy(symfs_filename, kce.extract_filename, 1953 sizeof(symfs_filename)); 1954 } 1955 } else if (dso__needs_decompress(dso)) { 1956 char tmp[KMOD_DECOMP_LEN]; 1957 1958 if (dso__decompress_kmodule_path(dso, symfs_filename, 1959 tmp, sizeof(tmp)) < 0) 1960 return -1; 1961 1962 decomp = true; 1963 strcpy(symfs_filename, tmp); 1964 } 1965 1966 err = asprintf(&command, 1967 "%s %s%s --start-address=0x%016" PRIx64 1968 " --stop-address=0x%016" PRIx64 1969 " -l -d %s %s %s %c%s%c %s%s -C \"$1\"", 1970 opts->objdump_path ?: "objdump", 1971 opts->disassembler_style ? "-M " : "", 1972 opts->disassembler_style ?: "", 1973 map__rip_2objdump(map, sym->start), 1974 map__rip_2objdump(map, sym->end), 1975 opts->show_asm_raw ? "" : "--no-show-raw-insn", 1976 opts->annotate_src ? "-S" : "", 1977 opts->prefix ? "--prefix " : "", 1978 opts->prefix ? '"' : ' ', 1979 opts->prefix ?: "", 1980 opts->prefix ? '"' : ' ', 1981 opts->prefix_strip ? "--prefix-strip=" : "", 1982 opts->prefix_strip ?: ""); 1983 1984 if (err < 0) { 1985 pr_err("Failure allocating memory for the command to run\n"); 1986 goto out_remove_tmp; 1987 } 1988 1989 pr_debug("Executing: %s\n", command); 1990 1991 objdump_argv[2] = command; 1992 objdump_argv[4] = symfs_filename; 1993 1994 /* Create a pipe to read from for stdout */ 1995 memset(&objdump_process, 0, sizeof(objdump_process)); 1996 objdump_process.argv = objdump_argv; 1997 objdump_process.out = -1; 1998 if (start_command(&objdump_process)) { 1999 pr_err("Failure starting to run %s\n", command); 2000 err = -1; 2001 goto out_free_command; 2002 } 2003 2004 file = fdopen(objdump_process.out, "r"); 2005 if (!file) { 2006 pr_err("Failure creating FILE stream for %s\n", command); 2007 /* 2008 * If we were using debug info should retry with 2009 * original binary. 2010 */ 2011 err = -1; 2012 goto out_close_stdout; 2013 } 2014 2015 /* Storage for getline. */ 2016 line = NULL; 2017 line_len = 0; 2018 2019 nline = 0; 2020 while (!feof(file)) { 2021 const char *match; 2022 char *expanded_line; 2023 2024 if (getline(&line, &line_len, file) < 0 || !line) 2025 break; 2026 2027 /* Skip lines containing "filename:" */ 2028 match = strstr(line, symfs_filename); 2029 if (match && match[strlen(symfs_filename)] == ':') 2030 continue; 2031 2032 expanded_line = strim(line); 2033 expanded_line = expand_tabs(expanded_line, &line, &line_len); 2034 if (!expanded_line) 2035 break; 2036 2037 /* 2038 * The source code line number (lineno) needs to be kept in 2039 * across calls to symbol__parse_objdump_line(), so that it 2040 * can associate it with the instructions till the next one. 2041 * See disasm_line__new() and struct disasm_line::line_nr. 2042 */ 2043 if (symbol__parse_objdump_line(sym, args, expanded_line, 2044 &lineno) < 0) 2045 break; 2046 nline++; 2047 } 2048 free(line); 2049 2050 err = finish_command(&objdump_process); 2051 if (err) 2052 pr_err("Error running %s\n", command); 2053 2054 if (nline == 0) { 2055 err = -1; 2056 pr_err("No output from %s\n", command); 2057 } 2058 2059 /* 2060 * kallsyms does not have symbol sizes so there may a nop at the end. 2061 * Remove it. 2062 */ 2063 if (dso__is_kcore(dso)) 2064 delete_last_nop(sym); 2065 2066 fclose(file); 2067 2068 out_close_stdout: 2069 close(objdump_process.out); 2070 2071 out_free_command: 2072 free(command); 2073 2074 out_remove_tmp: 2075 if (decomp) 2076 unlink(symfs_filename); 2077 2078 if (delete_extract) 2079 kcore_extract__delete(&kce); 2080 2081 return err; 2082 } 2083 2084 static void calc_percent(struct sym_hist *sym_hist, 2085 struct hists *hists, 2086 struct annotation_data *data, 2087 s64 offset, s64 end) 2088 { 2089 unsigned int hits = 0; 2090 u64 period = 0; 2091 2092 while (offset < end) { 2093 hits += sym_hist->addr[offset].nr_samples; 2094 period += sym_hist->addr[offset].period; 2095 ++offset; 2096 } 2097 2098 if (sym_hist->nr_samples) { 2099 data->he.period = period; 2100 data->he.nr_samples = hits; 2101 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples; 2102 } 2103 2104 if (hists->stats.nr_non_filtered_samples) 2105 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples; 2106 2107 if (sym_hist->period) 2108 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period; 2109 2110 if (hists->stats.total_period) 2111 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period; 2112 } 2113 2114 static void annotation__calc_percent(struct annotation *notes, 2115 struct evsel *leader, s64 len) 2116 { 2117 struct annotation_line *al, *next; 2118 struct evsel *evsel; 2119 2120 list_for_each_entry(al, ¬es->src->source, node) { 2121 s64 end; 2122 int i = 0; 2123 2124 if (al->offset == -1) 2125 continue; 2126 2127 next = annotation_line__next(al, ¬es->src->source); 2128 end = next ? next->offset : len; 2129 2130 for_each_group_evsel(evsel, leader) { 2131 struct hists *hists = evsel__hists(evsel); 2132 struct annotation_data *data; 2133 struct sym_hist *sym_hist; 2134 2135 BUG_ON(i >= al->data_nr); 2136 2137 sym_hist = annotation__histogram(notes, evsel->idx); 2138 data = &al->data[i++]; 2139 2140 calc_percent(sym_hist, hists, data, al->offset, end); 2141 } 2142 } 2143 } 2144 2145 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel) 2146 { 2147 struct annotation *notes = symbol__annotation(sym); 2148 2149 annotation__calc_percent(notes, evsel, symbol__size(sym)); 2150 } 2151 2152 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel, 2153 struct annotation_options *options, struct arch **parch) 2154 { 2155 size_t privsize = 0; 2156 struct symbol *sym = ms->sym; 2157 struct annotation *notes = symbol__annotation(sym); 2158 struct annotate_args args = { 2159 .privsize = privsize, 2160 .evsel = evsel, 2161 .options = options, 2162 }; 2163 struct perf_env *env = perf_evsel__env(evsel); 2164 const char *arch_name = perf_env__arch(env); 2165 struct arch *arch; 2166 int err; 2167 2168 if (!arch_name) 2169 return errno; 2170 2171 args.arch = arch = arch__find(arch_name); 2172 if (arch == NULL) 2173 return ENOTSUP; 2174 2175 if (parch) 2176 *parch = arch; 2177 2178 if (arch->init) { 2179 err = arch->init(arch, env ? env->cpuid : NULL); 2180 if (err) { 2181 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); 2182 return err; 2183 } 2184 } 2185 2186 args.ms = *ms; 2187 notes->start = map__rip_2objdump(ms->map, sym->start); 2188 2189 return symbol__disassemble(sym, &args); 2190 } 2191 2192 static void insert_source_line(struct rb_root *root, struct annotation_line *al, 2193 struct annotation_options *opts) 2194 { 2195 struct annotation_line *iter; 2196 struct rb_node **p = &root->rb_node; 2197 struct rb_node *parent = NULL; 2198 int i, ret; 2199 2200 while (*p != NULL) { 2201 parent = *p; 2202 iter = rb_entry(parent, struct annotation_line, rb_node); 2203 2204 ret = strcmp(iter->path, al->path); 2205 if (ret == 0) { 2206 for (i = 0; i < al->data_nr; i++) { 2207 iter->data[i].percent_sum += annotation_data__percent(&al->data[i], 2208 opts->percent_type); 2209 } 2210 return; 2211 } 2212 2213 if (ret < 0) 2214 p = &(*p)->rb_left; 2215 else 2216 p = &(*p)->rb_right; 2217 } 2218 2219 for (i = 0; i < al->data_nr; i++) { 2220 al->data[i].percent_sum = annotation_data__percent(&al->data[i], 2221 opts->percent_type); 2222 } 2223 2224 rb_link_node(&al->rb_node, parent, p); 2225 rb_insert_color(&al->rb_node, root); 2226 } 2227 2228 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b) 2229 { 2230 int i; 2231 2232 for (i = 0; i < a->data_nr; i++) { 2233 if (a->data[i].percent_sum == b->data[i].percent_sum) 2234 continue; 2235 return a->data[i].percent_sum > b->data[i].percent_sum; 2236 } 2237 2238 return 0; 2239 } 2240 2241 static void __resort_source_line(struct rb_root *root, struct annotation_line *al) 2242 { 2243 struct annotation_line *iter; 2244 struct rb_node **p = &root->rb_node; 2245 struct rb_node *parent = NULL; 2246 2247 while (*p != NULL) { 2248 parent = *p; 2249 iter = rb_entry(parent, struct annotation_line, rb_node); 2250 2251 if (cmp_source_line(al, iter)) 2252 p = &(*p)->rb_left; 2253 else 2254 p = &(*p)->rb_right; 2255 } 2256 2257 rb_link_node(&al->rb_node, parent, p); 2258 rb_insert_color(&al->rb_node, root); 2259 } 2260 2261 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) 2262 { 2263 struct annotation_line *al; 2264 struct rb_node *node; 2265 2266 node = rb_first(src_root); 2267 while (node) { 2268 struct rb_node *next; 2269 2270 al = rb_entry(node, struct annotation_line, rb_node); 2271 next = rb_next(node); 2272 rb_erase(node, src_root); 2273 2274 __resort_source_line(dest_root, al); 2275 node = next; 2276 } 2277 } 2278 2279 static void print_summary(struct rb_root *root, const char *filename) 2280 { 2281 struct annotation_line *al; 2282 struct rb_node *node; 2283 2284 printf("\nSorted summary for file %s\n", filename); 2285 printf("----------------------------------------------\n\n"); 2286 2287 if (RB_EMPTY_ROOT(root)) { 2288 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 2289 return; 2290 } 2291 2292 node = rb_first(root); 2293 while (node) { 2294 double percent, percent_max = 0.0; 2295 const char *color; 2296 char *path; 2297 int i; 2298 2299 al = rb_entry(node, struct annotation_line, rb_node); 2300 for (i = 0; i < al->data_nr; i++) { 2301 percent = al->data[i].percent_sum; 2302 color = get_percent_color(percent); 2303 color_fprintf(stdout, color, " %7.2f", percent); 2304 2305 if (percent > percent_max) 2306 percent_max = percent; 2307 } 2308 2309 path = al->path; 2310 color = get_percent_color(percent_max); 2311 color_fprintf(stdout, color, " %s\n", path); 2312 2313 node = rb_next(node); 2314 } 2315 } 2316 2317 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel) 2318 { 2319 struct annotation *notes = symbol__annotation(sym); 2320 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 2321 u64 len = symbol__size(sym), offset; 2322 2323 for (offset = 0; offset < len; ++offset) 2324 if (h->addr[offset].nr_samples != 0) 2325 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 2326 sym->start + offset, h->addr[offset].nr_samples); 2327 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); 2328 } 2329 2330 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start) 2331 { 2332 char bf[32]; 2333 struct annotation_line *line; 2334 2335 list_for_each_entry_reverse(line, lines, node) { 2336 if (line->offset != -1) 2337 return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset); 2338 } 2339 2340 return 0; 2341 } 2342 2343 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel, 2344 struct annotation_options *opts) 2345 { 2346 struct map *map = ms->map; 2347 struct symbol *sym = ms->sym; 2348 struct dso *dso = map->dso; 2349 char *filename; 2350 const char *d_filename; 2351 const char *evsel_name = perf_evsel__name(evsel); 2352 struct annotation *notes = symbol__annotation(sym); 2353 struct sym_hist *h = annotation__histogram(notes, evsel->idx); 2354 struct annotation_line *pos, *queue = NULL; 2355 u64 start = map__rip_2objdump(map, sym->start); 2356 int printed = 2, queue_len = 0, addr_fmt_width; 2357 int more = 0; 2358 bool context = opts->context; 2359 u64 len; 2360 int width = symbol_conf.show_total_period ? 12 : 8; 2361 int graph_dotted_len; 2362 char buf[512]; 2363 2364 filename = strdup(dso->long_name); 2365 if (!filename) 2366 return -ENOMEM; 2367 2368 if (opts->full_path) 2369 d_filename = filename; 2370 else 2371 d_filename = basename(filename); 2372 2373 len = symbol__size(sym); 2374 2375 if (perf_evsel__is_group_event(evsel)) { 2376 width *= evsel->core.nr_members; 2377 perf_evsel__group_desc(evsel, buf, sizeof(buf)); 2378 evsel_name = buf; 2379 } 2380 2381 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, " 2382 "percent: %s)\n", 2383 width, width, symbol_conf.show_total_period ? "Period" : 2384 symbol_conf.show_nr_samples ? "Samples" : "Percent", 2385 d_filename, evsel_name, h->nr_samples, 2386 percent_type_str(opts->percent_type)); 2387 2388 printf("%-*.*s----\n", 2389 graph_dotted_len, graph_dotted_len, graph_dotted_line); 2390 2391 if (verbose > 0) 2392 symbol__annotate_hits(sym, evsel); 2393 2394 addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); 2395 2396 list_for_each_entry(pos, ¬es->src->source, node) { 2397 int err; 2398 2399 if (context && queue == NULL) { 2400 queue = pos; 2401 queue_len = 0; 2402 } 2403 2404 err = annotation_line__print(pos, sym, start, evsel, len, 2405 opts->min_pcnt, printed, opts->max_lines, 2406 queue, addr_fmt_width, opts->percent_type); 2407 2408 switch (err) { 2409 case 0: 2410 ++printed; 2411 if (context) { 2412 printed += queue_len; 2413 queue = NULL; 2414 queue_len = 0; 2415 } 2416 break; 2417 case 1: 2418 /* filtered by max_lines */ 2419 ++more; 2420 break; 2421 case -1: 2422 default: 2423 /* 2424 * Filtered by min_pcnt or non IP lines when 2425 * context != 0 2426 */ 2427 if (!context) 2428 break; 2429 if (queue_len == context) 2430 queue = list_entry(queue->node.next, typeof(*queue), node); 2431 else 2432 ++queue_len; 2433 break; 2434 } 2435 } 2436 2437 free(filename); 2438 2439 return more; 2440 } 2441 2442 static void FILE__set_percent_color(void *fp __maybe_unused, 2443 double percent __maybe_unused, 2444 bool current __maybe_unused) 2445 { 2446 } 2447 2448 static int FILE__set_jumps_percent_color(void *fp __maybe_unused, 2449 int nr __maybe_unused, bool current __maybe_unused) 2450 { 2451 return 0; 2452 } 2453 2454 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused) 2455 { 2456 return 0; 2457 } 2458 2459 static void FILE__printf(void *fp, const char *fmt, ...) 2460 { 2461 va_list args; 2462 2463 va_start(args, fmt); 2464 vfprintf(fp, fmt, args); 2465 va_end(args); 2466 } 2467 2468 static void FILE__write_graph(void *fp, int graph) 2469 { 2470 const char *s; 2471 switch (graph) { 2472 2473 case DARROW_CHAR: s = "↓"; break; 2474 case UARROW_CHAR: s = "↑"; break; 2475 case LARROW_CHAR: s = "←"; break; 2476 case RARROW_CHAR: s = "→"; break; 2477 default: s = "?"; break; 2478 } 2479 2480 fputs(s, fp); 2481 } 2482 2483 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp, 2484 struct annotation_options *opts) 2485 { 2486 struct annotation *notes = symbol__annotation(sym); 2487 struct annotation_write_ops wops = { 2488 .first_line = true, 2489 .obj = fp, 2490 .set_color = FILE__set_color, 2491 .set_percent_color = FILE__set_percent_color, 2492 .set_jumps_percent_color = FILE__set_jumps_percent_color, 2493 .printf = FILE__printf, 2494 .write_graph = FILE__write_graph, 2495 }; 2496 struct annotation_line *al; 2497 2498 list_for_each_entry(al, ¬es->src->source, node) { 2499 if (annotation_line__filter(al, notes)) 2500 continue; 2501 annotation_line__write(al, notes, &wops, opts); 2502 fputc('\n', fp); 2503 wops.first_line = false; 2504 } 2505 2506 return 0; 2507 } 2508 2509 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel, 2510 struct annotation_options *opts) 2511 { 2512 const char *ev_name = perf_evsel__name(evsel); 2513 char buf[1024]; 2514 char *filename; 2515 int err = -1; 2516 FILE *fp; 2517 2518 if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0) 2519 return -1; 2520 2521 fp = fopen(filename, "w"); 2522 if (fp == NULL) 2523 goto out_free_filename; 2524 2525 if (perf_evsel__is_group_event(evsel)) { 2526 perf_evsel__group_desc(evsel, buf, sizeof(buf)); 2527 ev_name = buf; 2528 } 2529 2530 fprintf(fp, "%s() %s\nEvent: %s\n\n", 2531 ms->sym->name, ms->map->dso->long_name, ev_name); 2532 symbol__annotate_fprintf2(ms->sym, fp, opts); 2533 2534 fclose(fp); 2535 err = 0; 2536 out_free_filename: 2537 free(filename); 2538 return err; 2539 } 2540 2541 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 2542 { 2543 struct annotation *notes = symbol__annotation(sym); 2544 struct sym_hist *h = annotation__histogram(notes, evidx); 2545 2546 memset(h, 0, notes->src->sizeof_sym_hist); 2547 } 2548 2549 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 2550 { 2551 struct annotation *notes = symbol__annotation(sym); 2552 struct sym_hist *h = annotation__histogram(notes, evidx); 2553 int len = symbol__size(sym), offset; 2554 2555 h->nr_samples = 0; 2556 for (offset = 0; offset < len; ++offset) { 2557 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; 2558 h->nr_samples += h->addr[offset].nr_samples; 2559 } 2560 } 2561 2562 void annotated_source__purge(struct annotated_source *as) 2563 { 2564 struct annotation_line *al, *n; 2565 2566 list_for_each_entry_safe(al, n, &as->source, node) { 2567 list_del_init(&al->node); 2568 disasm_line__free(disasm_line(al)); 2569 } 2570 } 2571 2572 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 2573 { 2574 size_t printed; 2575 2576 if (dl->al.offset == -1) 2577 return fprintf(fp, "%s\n", dl->al.line); 2578 2579 printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name); 2580 2581 if (dl->ops.raw[0] != '\0') { 2582 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 2583 dl->ops.raw); 2584 } 2585 2586 return printed + fprintf(fp, "\n"); 2587 } 2588 2589 size_t disasm__fprintf(struct list_head *head, FILE *fp) 2590 { 2591 struct disasm_line *pos; 2592 size_t printed = 0; 2593 2594 list_for_each_entry(pos, head, al.node) 2595 printed += disasm_line__fprintf(pos, fp); 2596 2597 return printed; 2598 } 2599 2600 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym) 2601 { 2602 if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) || 2603 !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 || 2604 dl->ops.target.offset >= (s64)symbol__size(sym)) 2605 return false; 2606 2607 return true; 2608 } 2609 2610 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym) 2611 { 2612 u64 offset, size = symbol__size(sym); 2613 2614 /* PLT symbols contain external offsets */ 2615 if (strstr(sym->name, "@plt")) 2616 return; 2617 2618 for (offset = 0; offset < size; ++offset) { 2619 struct annotation_line *al = notes->offsets[offset]; 2620 struct disasm_line *dl; 2621 2622 dl = disasm_line(al); 2623 2624 if (!disasm_line__is_valid_local_jump(dl, sym)) 2625 continue; 2626 2627 al = notes->offsets[dl->ops.target.offset]; 2628 2629 /* 2630 * FIXME: Oops, no jump target? Buggy disassembler? Or do we 2631 * have to adjust to the previous offset? 2632 */ 2633 if (al == NULL) 2634 continue; 2635 2636 if (++al->jump_sources > notes->max_jump_sources) 2637 notes->max_jump_sources = al->jump_sources; 2638 2639 ++notes->nr_jumps; 2640 } 2641 } 2642 2643 void annotation__set_offsets(struct annotation *notes, s64 size) 2644 { 2645 struct annotation_line *al; 2646 2647 notes->max_line_len = 0; 2648 2649 list_for_each_entry(al, ¬es->src->source, node) { 2650 size_t line_len = strlen(al->line); 2651 2652 if (notes->max_line_len < line_len) 2653 notes->max_line_len = line_len; 2654 al->idx = notes->nr_entries++; 2655 if (al->offset != -1) { 2656 al->idx_asm = notes->nr_asm_entries++; 2657 /* 2658 * FIXME: short term bandaid to cope with assembly 2659 * routines that comes with labels in the same column 2660 * as the address in objdump, sigh. 2661 * 2662 * E.g. copy_user_generic_unrolled 2663 */ 2664 if (al->offset < size) 2665 notes->offsets[al->offset] = al; 2666 } else 2667 al->idx_asm = -1; 2668 } 2669 } 2670 2671 static inline int width_jumps(int n) 2672 { 2673 if (n >= 100) 2674 return 5; 2675 if (n / 10) 2676 return 2; 2677 return 1; 2678 } 2679 2680 static int annotation__max_ins_name(struct annotation *notes) 2681 { 2682 int max_name = 0, len; 2683 struct annotation_line *al; 2684 2685 list_for_each_entry(al, ¬es->src->source, node) { 2686 if (al->offset == -1) 2687 continue; 2688 2689 len = strlen(disasm_line(al)->ins.name); 2690 if (max_name < len) 2691 max_name = len; 2692 } 2693 2694 return max_name; 2695 } 2696 2697 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym) 2698 { 2699 notes->widths.addr = notes->widths.target = 2700 notes->widths.min_addr = hex_width(symbol__size(sym)); 2701 notes->widths.max_addr = hex_width(sym->end); 2702 notes->widths.jumps = width_jumps(notes->max_jump_sources); 2703 notes->widths.max_ins_name = annotation__max_ins_name(notes); 2704 } 2705 2706 void annotation__update_column_widths(struct annotation *notes) 2707 { 2708 if (notes->options->use_offset) 2709 notes->widths.target = notes->widths.min_addr; 2710 else 2711 notes->widths.target = notes->widths.max_addr; 2712 2713 notes->widths.addr = notes->widths.target; 2714 2715 if (notes->options->show_nr_jumps) 2716 notes->widths.addr += notes->widths.jumps + 1; 2717 } 2718 2719 static void annotation__calc_lines(struct annotation *notes, struct map *map, 2720 struct rb_root *root, 2721 struct annotation_options *opts) 2722 { 2723 struct annotation_line *al; 2724 struct rb_root tmp_root = RB_ROOT; 2725 2726 list_for_each_entry(al, ¬es->src->source, node) { 2727 double percent_max = 0.0; 2728 int i; 2729 2730 for (i = 0; i < al->data_nr; i++) { 2731 double percent; 2732 2733 percent = annotation_data__percent(&al->data[i], 2734 opts->percent_type); 2735 2736 if (percent > percent_max) 2737 percent_max = percent; 2738 } 2739 2740 if (percent_max <= 0.5) 2741 continue; 2742 2743 al->path = get_srcline(map->dso, notes->start + al->offset, NULL, 2744 false, true, notes->start + al->offset); 2745 insert_source_line(&tmp_root, al, opts); 2746 } 2747 2748 resort_source_line(root, &tmp_root); 2749 } 2750 2751 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root, 2752 struct annotation_options *opts) 2753 { 2754 struct annotation *notes = symbol__annotation(ms->sym); 2755 2756 annotation__calc_lines(notes, ms->map, root, opts); 2757 } 2758 2759 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, 2760 struct annotation_options *opts) 2761 { 2762 struct dso *dso = ms->map->dso; 2763 struct symbol *sym = ms->sym; 2764 struct rb_root source_line = RB_ROOT; 2765 struct hists *hists = evsel__hists(evsel); 2766 char buf[1024]; 2767 2768 if (symbol__annotate2(ms, evsel, opts, NULL) < 0) 2769 return -1; 2770 2771 if (opts->print_lines) { 2772 srcline_full_filename = opts->full_path; 2773 symbol__calc_lines(ms, &source_line, opts); 2774 print_summary(&source_line, dso->long_name); 2775 } 2776 2777 hists__scnprintf_title(hists, buf, sizeof(buf)); 2778 fprintf(stdout, "%s, [percent: %s]\n%s() %s\n", 2779 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name); 2780 symbol__annotate_fprintf2(sym, stdout, opts); 2781 2782 annotated_source__purge(symbol__annotation(sym)->src); 2783 2784 return 0; 2785 } 2786 2787 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, 2788 struct annotation_options *opts) 2789 { 2790 struct dso *dso = ms->map->dso; 2791 struct symbol *sym = ms->sym; 2792 struct rb_root source_line = RB_ROOT; 2793 2794 if (symbol__annotate(ms, evsel, opts, NULL) < 0) 2795 return -1; 2796 2797 symbol__calc_percent(sym, evsel); 2798 2799 if (opts->print_lines) { 2800 srcline_full_filename = opts->full_path; 2801 symbol__calc_lines(ms, &source_line, opts); 2802 print_summary(&source_line, dso->long_name); 2803 } 2804 2805 symbol__annotate_printf(ms, evsel, opts); 2806 2807 annotated_source__purge(symbol__annotation(sym)->src); 2808 2809 return 0; 2810 } 2811 2812 bool ui__has_annotation(void) 2813 { 2814 return use_browser == 1 && perf_hpp_list.sym; 2815 } 2816 2817 2818 static double annotation_line__max_percent(struct annotation_line *al, 2819 struct annotation *notes, 2820 unsigned int percent_type) 2821 { 2822 double percent_max = 0.0; 2823 int i; 2824 2825 for (i = 0; i < notes->nr_events; i++) { 2826 double percent; 2827 2828 percent = annotation_data__percent(&al->data[i], 2829 percent_type); 2830 2831 if (percent > percent_max) 2832 percent_max = percent; 2833 } 2834 2835 return percent_max; 2836 } 2837 2838 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes, 2839 void *obj, char *bf, size_t size, 2840 void (*obj__printf)(void *obj, const char *fmt, ...), 2841 void (*obj__write_graph)(void *obj, int graph)) 2842 { 2843 if (dl->ins.ops && dl->ins.ops->scnprintf) { 2844 if (ins__is_jump(&dl->ins)) { 2845 bool fwd; 2846 2847 if (dl->ops.target.outside) 2848 goto call_like; 2849 fwd = dl->ops.target.offset > dl->al.offset; 2850 obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR); 2851 obj__printf(obj, " "); 2852 } else if (ins__is_call(&dl->ins)) { 2853 call_like: 2854 obj__write_graph(obj, RARROW_CHAR); 2855 obj__printf(obj, " "); 2856 } else if (ins__is_ret(&dl->ins)) { 2857 obj__write_graph(obj, LARROW_CHAR); 2858 obj__printf(obj, " "); 2859 } else { 2860 obj__printf(obj, " "); 2861 } 2862 } else { 2863 obj__printf(obj, " "); 2864 } 2865 2866 disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name); 2867 } 2868 2869 static void ipc_coverage_string(char *bf, int size, struct annotation *notes) 2870 { 2871 double ipc = 0.0, coverage = 0.0; 2872 2873 if (notes->hit_cycles) 2874 ipc = notes->hit_insn / ((double)notes->hit_cycles); 2875 2876 if (notes->total_insn) { 2877 coverage = notes->cover_insn * 100.0 / 2878 ((double)notes->total_insn); 2879 } 2880 2881 scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)", 2882 ipc, coverage); 2883 } 2884 2885 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes, 2886 bool first_line, bool current_entry, bool change_color, int width, 2887 void *obj, unsigned int percent_type, 2888 int (*obj__set_color)(void *obj, int color), 2889 void (*obj__set_percent_color)(void *obj, double percent, bool current), 2890 int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current), 2891 void (*obj__printf)(void *obj, const char *fmt, ...), 2892 void (*obj__write_graph)(void *obj, int graph)) 2893 2894 { 2895 double percent_max = annotation_line__max_percent(al, notes, percent_type); 2896 int pcnt_width = annotation__pcnt_width(notes), 2897 cycles_width = annotation__cycles_width(notes); 2898 bool show_title = false; 2899 char bf[256]; 2900 int printed; 2901 2902 if (first_line && (al->offset == -1 || percent_max == 0.0)) { 2903 if (notes->have_cycles) { 2904 if (al->ipc == 0.0 && al->cycles == 0) 2905 show_title = true; 2906 } else 2907 show_title = true; 2908 } 2909 2910 if (al->offset != -1 && percent_max != 0.0) { 2911 int i; 2912 2913 for (i = 0; i < notes->nr_events; i++) { 2914 double percent; 2915 2916 percent = annotation_data__percent(&al->data[i], percent_type); 2917 2918 obj__set_percent_color(obj, percent, current_entry); 2919 if (symbol_conf.show_total_period) { 2920 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period); 2921 } else if (symbol_conf.show_nr_samples) { 2922 obj__printf(obj, "%6" PRIu64 " ", 2923 al->data[i].he.nr_samples); 2924 } else { 2925 obj__printf(obj, "%6.2f ", percent); 2926 } 2927 } 2928 } else { 2929 obj__set_percent_color(obj, 0, current_entry); 2930 2931 if (!show_title) 2932 obj__printf(obj, "%-*s", pcnt_width, " "); 2933 else { 2934 obj__printf(obj, "%-*s", pcnt_width, 2935 symbol_conf.show_total_period ? "Period" : 2936 symbol_conf.show_nr_samples ? "Samples" : "Percent"); 2937 } 2938 } 2939 2940 if (notes->have_cycles) { 2941 if (al->ipc) 2942 obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc); 2943 else if (!show_title) 2944 obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " "); 2945 else 2946 obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC"); 2947 2948 if (!notes->options->show_minmax_cycle) { 2949 if (al->cycles) 2950 obj__printf(obj, "%*" PRIu64 " ", 2951 ANNOTATION__CYCLES_WIDTH - 1, al->cycles); 2952 else if (!show_title) 2953 obj__printf(obj, "%*s", 2954 ANNOTATION__CYCLES_WIDTH, " "); 2955 else 2956 obj__printf(obj, "%*s ", 2957 ANNOTATION__CYCLES_WIDTH - 1, 2958 "Cycle"); 2959 } else { 2960 if (al->cycles) { 2961 char str[32]; 2962 2963 scnprintf(str, sizeof(str), 2964 "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")", 2965 al->cycles, al->cycles_min, 2966 al->cycles_max); 2967 2968 obj__printf(obj, "%*s ", 2969 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 2970 str); 2971 } else if (!show_title) 2972 obj__printf(obj, "%*s", 2973 ANNOTATION__MINMAX_CYCLES_WIDTH, 2974 " "); 2975 else 2976 obj__printf(obj, "%*s ", 2977 ANNOTATION__MINMAX_CYCLES_WIDTH - 1, 2978 "Cycle(min/max)"); 2979 } 2980 2981 if (show_title && !*al->line) { 2982 ipc_coverage_string(bf, sizeof(bf), notes); 2983 obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf); 2984 } 2985 } 2986 2987 obj__printf(obj, " "); 2988 2989 if (!*al->line) 2990 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " "); 2991 else if (al->offset == -1) { 2992 if (al->line_nr && notes->options->show_linenr) 2993 printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr); 2994 else 2995 printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->widths.addr, " "); 2996 obj__printf(obj, bf); 2997 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line); 2998 } else { 2999 u64 addr = al->offset; 3000 int color = -1; 3001 3002 if (!notes->options->use_offset) 3003 addr += notes->start; 3004 3005 if (!notes->options->use_offset) { 3006 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr); 3007 } else { 3008 if (al->jump_sources && 3009 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) { 3010 if (notes->options->show_nr_jumps) { 3011 int prev; 3012 printed = scnprintf(bf, sizeof(bf), "%*d ", 3013 notes->widths.jumps, 3014 al->jump_sources); 3015 prev = obj__set_jumps_percent_color(obj, al->jump_sources, 3016 current_entry); 3017 obj__printf(obj, bf); 3018 obj__set_color(obj, prev); 3019 } 3020 print_addr: 3021 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ", 3022 notes->widths.target, addr); 3023 } else if (ins__is_call(&disasm_line(al)->ins) && 3024 notes->options->offset_level >= ANNOTATION__OFFSET_CALL) { 3025 goto print_addr; 3026 } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) { 3027 goto print_addr; 3028 } else { 3029 printed = scnprintf(bf, sizeof(bf), "%-*s ", 3030 notes->widths.addr, " "); 3031 } 3032 } 3033 3034 if (change_color) 3035 color = obj__set_color(obj, HE_COLORSET_ADDR); 3036 obj__printf(obj, bf); 3037 if (change_color) 3038 obj__set_color(obj, color); 3039 3040 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph); 3041 3042 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf); 3043 } 3044 3045 } 3046 3047 void annotation_line__write(struct annotation_line *al, struct annotation *notes, 3048 struct annotation_write_ops *wops, 3049 struct annotation_options *opts) 3050 { 3051 __annotation_line__write(al, notes, wops->first_line, wops->current_entry, 3052 wops->change_color, wops->width, wops->obj, 3053 opts->percent_type, 3054 wops->set_color, wops->set_percent_color, 3055 wops->set_jumps_percent_color, wops->printf, 3056 wops->write_graph); 3057 } 3058 3059 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel, 3060 struct annotation_options *options, struct arch **parch) 3061 { 3062 struct symbol *sym = ms->sym; 3063 struct annotation *notes = symbol__annotation(sym); 3064 size_t size = symbol__size(sym); 3065 int nr_pcnt = 1, err; 3066 3067 notes->offsets = zalloc(size * sizeof(struct annotation_line *)); 3068 if (notes->offsets == NULL) 3069 return ENOMEM; 3070 3071 if (perf_evsel__is_group_event(evsel)) 3072 nr_pcnt = evsel->core.nr_members; 3073 3074 err = symbol__annotate(ms, evsel, options, parch); 3075 if (err) 3076 goto out_free_offsets; 3077 3078 notes->options = options; 3079 3080 symbol__calc_percent(sym, evsel); 3081 3082 annotation__set_offsets(notes, size); 3083 annotation__mark_jump_targets(notes, sym); 3084 annotation__compute_ipc(notes, size); 3085 annotation__init_column_widths(notes, sym); 3086 notes->nr_events = nr_pcnt; 3087 3088 annotation__update_column_widths(notes); 3089 sym->annotate2 = true; 3090 3091 return 0; 3092 3093 out_free_offsets: 3094 zfree(¬es->offsets); 3095 return err; 3096 } 3097 3098 static int annotation__config(const char *var, const char *value, void *data) 3099 { 3100 struct annotation_options *opt = data; 3101 3102 if (!strstarts(var, "annotate.")) 3103 return 0; 3104 3105 if (!strcmp(var, "annotate.offset_level")) { 3106 perf_config_u8(&opt->offset_level, "offset_level", value); 3107 3108 if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL) 3109 opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL; 3110 else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL) 3111 opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL; 3112 } else if (!strcmp(var, "annotate.hide_src_code")) { 3113 opt->hide_src_code = perf_config_bool("hide_src_code", value); 3114 } else if (!strcmp(var, "annotate.jump_arrows")) { 3115 opt->jump_arrows = perf_config_bool("jump_arrows", value); 3116 } else if (!strcmp(var, "annotate.show_linenr")) { 3117 opt->show_linenr = perf_config_bool("show_linenr", value); 3118 } else if (!strcmp(var, "annotate.show_nr_jumps")) { 3119 opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value); 3120 } else if (!strcmp(var, "annotate.show_nr_samples")) { 3121 symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples", 3122 value); 3123 } else if (!strcmp(var, "annotate.show_total_period")) { 3124 symbol_conf.show_total_period = perf_config_bool("show_total_period", 3125 value); 3126 } else if (!strcmp(var, "annotate.use_offset")) { 3127 opt->use_offset = perf_config_bool("use_offset", value); 3128 } else { 3129 pr_debug("%s variable unknown, ignoring...", var); 3130 } 3131 3132 return 0; 3133 } 3134 3135 void annotation_config__init(struct annotation_options *opt) 3136 { 3137 perf_config(annotation__config, opt); 3138 } 3139 3140 static unsigned int parse_percent_type(char *str1, char *str2) 3141 { 3142 unsigned int type = (unsigned int) -1; 3143 3144 if (!strcmp("period", str1)) { 3145 if (!strcmp("local", str2)) 3146 type = PERCENT_PERIOD_LOCAL; 3147 else if (!strcmp("global", str2)) 3148 type = PERCENT_PERIOD_GLOBAL; 3149 } 3150 3151 if (!strcmp("hits", str1)) { 3152 if (!strcmp("local", str2)) 3153 type = PERCENT_HITS_LOCAL; 3154 else if (!strcmp("global", str2)) 3155 type = PERCENT_HITS_GLOBAL; 3156 } 3157 3158 return type; 3159 } 3160 3161 int annotate_parse_percent_type(const struct option *opt, const char *_str, 3162 int unset __maybe_unused) 3163 { 3164 struct annotation_options *opts = opt->value; 3165 unsigned int type; 3166 char *str1, *str2; 3167 int err = -1; 3168 3169 str1 = strdup(_str); 3170 if (!str1) 3171 return -ENOMEM; 3172 3173 str2 = strchr(str1, '-'); 3174 if (!str2) 3175 goto out; 3176 3177 *str2++ = 0; 3178 3179 type = parse_percent_type(str1, str2); 3180 if (type == (unsigned int) -1) 3181 type = parse_percent_type(str2, str1); 3182 if (type != (unsigned int) -1) { 3183 opts->percent_type = type; 3184 err = 0; 3185 } 3186 3187 out: 3188 free(str1); 3189 return err; 3190 } 3191 3192 int annotate_check_args(struct annotation_options *args) 3193 { 3194 if (args->prefix_strip && !args->prefix) { 3195 pr_err("--prefix-strip requires --prefix\n"); 3196 return -1; 3197 } 3198 return 0; 3199 } 3200