tools/perf/util/annotate.c

   1 /*
   2  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
   3  *
   4  * Parts came from builtin-annotate.c, see those files for further
   5  * copyright notes.
   6  *
   7  * Released under the GPL v2. (and only v2, not any later version)
   8  */
   9
  10 #include "util.h"
  11 #include "ui/ui.h"
  12 #include "sort.h"
  13 #include "build-id.h"
  14 #include "color.h"
  15 #include "cache.h"
  16 #include "symbol.h"
  17 #include "debug.h"
  18 #include "annotate.h"
  19 #include "evsel.h"
  20 #include "block-range.h"
  21 #include "arch/common.h"
  22 #include <regex.h>
  23 #include <pthread.h>
  24 #include <linux/bitops.h>
  25 #include <linux/kernel.h>
  26 #include <sys/utsname.h>
  27
  28 const char      *disassembler_style;
  29 const char      *objdump_path;
  30 static regex_t   file_lineno;
  31
  32 static struct ins_ops *ins__find(struct arch *arch, const char *name);
  33 static void ins__sort(struct arch *arch);
  34 static int disasm_line__parse(char *line, const char **namep, char **rawp);
  35
  36 struct arch {
  37         const char      *name;
  38         struct ins      *instructions;
  39         size_t          nr_instructions;
  40         size_t          nr_instructions_allocated;
  41         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
  42         bool            sorted_instructions;
  43         bool            initialized;
  44         void            *priv;
  45         int             (*init)(struct arch *arch);
  46         struct          {
  47                 char comment_char;
  48                 char skip_functions_char;
  49         } objdump;
  50 };
  51
  52 static struct ins_ops call_ops;
  53 static struct ins_ops dec_ops;
  54 static struct ins_ops jump_ops;
  55 static struct ins_ops mov_ops;
  56 static struct ins_ops nop_ops;
  57 static struct ins_ops lock_ops;
  58 static struct ins_ops ret_ops;
  59
  60 static int arch__grow_instructions(struct arch *arch)
  61 {
  62         struct ins *new_instructions;
  63         size_t new_nr_allocated;
  64
  65         if (arch->nr_instructions_allocated == 0 && arch->instructions)
  66                 goto grow_from_non_allocated_table;
  67
  68         new_nr_allocated = arch->nr_instructions_allocated + 128;
  69         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
  70         if (new_instructions == NULL)
  71                 return -1;
  72
  73 out_update_instructions:
  74         arch->instructions = new_instructions;
  75         arch->nr_instructions_allocated = new_nr_allocated;
  76         return 0;
  77
  78 grow_from_non_allocated_table:
  79         new_nr_allocated = arch->nr_instructions + 128;
  80         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
  81         if (new_instructions == NULL)
  82                 return -1;
  83
  84         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
  85         goto out_update_instructions;
  86 }
  87
  88 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
  89 {
  90         struct ins *ins;
  91
  92         if (arch->nr_instructions == arch->nr_instructions_allocated &&
  93             arch__grow_instructions(arch))
  94                 return -1;
  95
  96         ins = &arch->instructions[arch->nr_instructions];
  97         ins->name = strdup(name);
  98         if (!ins->name)
  99                 return -1;
 100
 101         ins->ops  = ops;
 102         arch->nr_instructions++;
 103
 104         ins__sort(arch);
 105         return 0;
 106 }
 107
 108 #include "arch/arm/annotate/instructions.c"
 109 #include "arch/arm64/annotate/instructions.c"
 110 #include "arch/x86/annotate/instructions.c"
 111 #include "arch/powerpc/annotate/instructions.c"
 112 #include "arch/s390/annotate/instructions.c"
 113
 114 static struct arch architectures[] = {
 115         {
 116                 .name = "arm",
 117                 .init = arm__annotate_init,
 118         },
 119         {
 120                 .name = "arm64",
 121                 .init = arm64__annotate_init,
 122         },
 123         {
 124                 .name = "x86",
 125                 .instructions = x86__instructions,
 126                 .nr_instructions = ARRAY_SIZE(x86__instructions),
 127                 .objdump =  {
 128                         .comment_char = '#',
 129                 },
 130         },
 131         {
 132                 .name = "powerpc",
 133                 .init = powerpc__annotate_init,
 134         },
 135         {
 136                 .name = "s390",
 137                 .init = s390__annotate_init,
 138                 .objdump =  {
 139                         .comment_char = '#',
 140                 },
 141         },
 142 };
 143
 144 static void ins__delete(struct ins_operands *ops)
 145 {
 146         if (ops == NULL)
 147                 return;
 148         zfree(&ops->source.raw);
 149         zfree(&ops->source.name);
 150         zfree(&ops->target.raw);
 151         zfree(&ops->target.name);
 152 }
 153
 154 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
 155                               struct ins_operands *ops)
 156 {
 157         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
 158 }
 159
 160 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
 161                   struct ins_operands *ops)
 162 {
 163         if (ins->ops->scnprintf)
 164                 return ins->ops->scnprintf(ins, bf, size, ops);
 165
 166         return ins__raw_scnprintf(ins, bf, size, ops);
 167 }
 168
 169 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 170 {
 171         char *endptr, *tok, *name;
 172
 173         ops->target.addr = strtoull(ops->raw, &endptr, 16);
 174
 175         name = strchr(endptr, '<');
 176         if (name == NULL)
 177                 goto indirect_call;
 178
 179         name++;
 180
 181         if (arch->objdump.skip_functions_char &&
 182             strchr(name, arch->objdump.skip_functions_char))
 183                 return -1;
 184
 185         tok = strchr(name, '>');
 186         if (tok == NULL)
 187                 return -1;
 188
 189         *tok = '\0';
 190         ops->target.name = strdup(name);
 191         *tok = '>';
 192
 193         return ops->target.name == NULL ? -1 : 0;
 194
 195 indirect_call:
 196         tok = strchr(endptr, '*');
 197         if (tok == NULL) {
 198                 struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
 199                 if (sym != NULL)
 200                         ops->target.name = strdup(sym->name);
 201                 else
 202                         ops->target.addr = 0;
 203                 return 0;
 204         }
 205
 206         ops->target.addr = strtoull(tok + 1, NULL, 16);
 207         return 0;
 208 }
 209
 210 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
 211                            struct ins_operands *ops)
 212 {
 213         if (ops->target.name)
 214                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
 215
 216         if (ops->target.addr == 0)
 217                 return ins__raw_scnprintf(ins, bf, size, ops);
 218
 219         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
 220 }
 221
 222 static struct ins_ops call_ops = {
 223         .parse     = call__parse,
 224         .scnprintf = call__scnprintf,
 225 };
 226
 227 bool ins__is_call(const struct ins *ins)
 228 {
 229         return ins->ops == &call_ops;
 230 }
 231
 232 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 233 {
 234         const char *s = strchr(ops->raw, '+');
 235         const char *c = strchr(ops->raw, ',');
 236
 237         if (c++ != NULL)
 238                 ops->target.addr = strtoull(c, NULL, 16);
 239         else
 240                 ops->target.addr = strtoull(ops->raw, NULL, 16);
 241
 242         if (s++ != NULL) {
 243                 ops->target.offset = strtoull(s, NULL, 16);
 244                 ops->target.offset_avail = true;
 245         } else {
 246                 ops->target.offset_avail = false;
 247         }
 248
 249         return 0;
 250 }
 251
 252 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 253                            struct ins_operands *ops)
 254 {
 255         if (!ops->target.addr || ops->target.offset < 0)
 256                 return ins__raw_scnprintf(ins, bf, size, ops);
 257
 258         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 259 }
 260
 261 static struct ins_ops jump_ops = {
 262         .parse     = jump__parse,
 263         .scnprintf = jump__scnprintf,
 264 };
 265
 266 bool ins__is_jump(const struct ins *ins)
 267 {
 268         return ins->ops == &jump_ops;
 269 }
 270
 271 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 272 {
 273         char *endptr, *name, *t;
 274
 275         if (strstr(raw, "(%rip)") == NULL)
 276                 return 0;
 277
 278         *addrp = strtoull(comment, &endptr, 16);
 279         name = strchr(endptr, '<');
 280         if (name == NULL)
 281                 return -1;
 282
 283         name++;
 284
 285         t = strchr(name, '>');
 286         if (t == NULL)
 287                 return 0;
 288
 289         *t = '\0';
 290         *namep = strdup(name);
 291         *t = '>';
 292
 293         return 0;
 294 }
 295
 296 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 297 {
 298         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 299         if (ops->locked.ops == NULL)
 300                 return 0;
 301
 302         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
 303                 goto out_free_ops;
 304
 305         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
 306
 307         if (ops->locked.ins.ops == NULL)
 308                 goto out_free_ops;
 309
 310         if (ops->locked.ins.ops->parse &&
 311             ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 0)
 312                 goto out_free_ops;
 313
 314         return 0;
 315
 316 out_free_ops:
 317         zfree(&ops->locked.ops);
 318         return 0;
 319 }
 320
 321 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 322                            struct ins_operands *ops)
 323 {
 324         int printed;
 325
 326         if (ops->locked.ins.ops == NULL)
 327                 return ins__raw_scnprintf(ins, bf, size, ops);
 328
 329         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 330         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
 331                                         size - printed, ops->locked.ops);
 332 }
 333
 334 static void lock__delete(struct ins_operands *ops)
 335 {
 336         struct ins *ins = &ops->locked.ins;
 337
 338         if (ins->ops && ins->ops->free)
 339                 ins->ops->free(ops->locked.ops);
 340         else
 341                 ins__delete(ops->locked.ops);
 342
 343         zfree(&ops->locked.ops);
 344         zfree(&ops->target.raw);
 345         zfree(&ops->target.name);
 346 }
 347
 348 static struct ins_ops lock_ops = {
 349         .free      = lock__delete,
 350         .parse     = lock__parse,
 351         .scnprintf = lock__scnprintf,
 352 };
 353
 354 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused)
 355 {
 356         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 357
 358         if (s == NULL)
 359                 return -1;
 360
 361         *s = '\0';
 362         ops->source.raw = strdup(ops->raw);
 363         *s = ',';
 364
 365         if (ops->source.raw == NULL)
 366                 return -1;
 367
 368         target = ++s;
 369         comment = strchr(s, arch->objdump.comment_char);
 370
 371         if (comment != NULL)
 372                 s = comment - 1;
 373         else
 374                 s = strchr(s, '\0') - 1;
 375
 376         while (s > target && isspace(s[0]))
 377                 --s;
 378         s++;
 379         prev = *s;
 380         *s = '\0';
 381
 382         ops->target.raw = strdup(target);
 383         *s = prev;
 384
 385         if (ops->target.raw == NULL)
 386                 goto out_free_source;
 387
 388         if (comment == NULL)
 389                 return 0;
 390
 391         comment = ltrim(comment);
 392         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 393         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 394
 395         return 0;
 396
 397 out_free_source:
 398         zfree(&ops->source.raw);
 399         return -1;
 400 }
 401
 402 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 403                            struct ins_operands *ops)
 404 {
 405         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 406                          ops->source.name ?: ops->source.raw,
 407                          ops->target.name ?: ops->target.raw);
 408 }
 409
 410 static struct ins_ops mov_ops = {
 411         .parse     = mov__parse,
 412         .scnprintf = mov__scnprintf,
 413 };
 414
 415 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 416 {
 417         char *target, *comment, *s, prev;
 418
 419         target = s = ops->raw;
 420
 421         while (s[0] != '\0' && !isspace(s[0]))
 422                 ++s;
 423         prev = *s;
 424         *s = '\0';
 425
 426         ops->target.raw = strdup(target);
 427         *s = prev;
 428
 429         if (ops->target.raw == NULL)
 430                 return -1;
 431
 432         comment = strchr(s, arch->objdump.comment_char);
 433         if (comment == NULL)
 434                 return 0;
 435
 436         comment = ltrim(comment);
 437         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 438
 439         return 0;
 440 }
 441
 442 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 443                            struct ins_operands *ops)
 444 {
 445         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 446                          ops->target.name ?: ops->target.raw);
 447 }
 448
 449 static struct ins_ops dec_ops = {
 450         .parse     = dec__parse,
 451         .scnprintf = dec__scnprintf,
 452 };
 453
 454 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 455                           struct ins_operands *ops __maybe_unused)
 456 {
 457         return scnprintf(bf, size, "%-6.6s", "nop");
 458 }
 459
 460 static struct ins_ops nop_ops = {
 461         .scnprintf = nop__scnprintf,
 462 };
 463
 464 static struct ins_ops ret_ops = {
 465         .scnprintf = ins__raw_scnprintf,
 466 };
 467
 468 bool ins__is_ret(const struct ins *ins)
 469 {
 470         return ins->ops == &ret_ops;
 471 }
 472
 473 static int ins__key_cmp(const void *name, const void *insp)
 474 {
 475         const struct ins *ins = insp;
 476
 477         return strcmp(name, ins->name);
 478 }
 479
 480 static int ins__cmp(const void *a, const void *b)
 481 {
 482         const struct ins *ia = a;
 483         const struct ins *ib = b;
 484
 485         return strcmp(ia->name, ib->name);
 486 }
 487
 488 static void ins__sort(struct arch *arch)
 489 {
 490         const int nmemb = arch->nr_instructions;
 491
 492         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
 493 }
 494
 495 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
 496 {
 497         struct ins *ins;
 498         const int nmemb = arch->nr_instructions;
 499
 500         if (!arch->sorted_instructions) {
 501                 ins__sort(arch);
 502                 arch->sorted_instructions = true;
 503         }
 504
 505         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
 506         return ins ? ins->ops : NULL;
 507 }
 508
 509 static struct ins_ops *ins__find(struct arch *arch, const char *name)
 510 {
 511         struct ins_ops *ops = __ins__find(arch, name);
 512
 513         if (!ops && arch->associate_instruction_ops)
 514                 ops = arch->associate_instruction_ops(arch, name);
 515
 516         return ops;
 517 }
 518
 519 static int arch__key_cmp(const void *name, const void *archp)
 520 {
 521         const struct arch *arch = archp;
 522
 523         return strcmp(name, arch->name);
 524 }
 525
 526 static int arch__cmp(const void *a, const void *b)
 527 {
 528         const struct arch *aa = a;
 529         const struct arch *ab = b;
 530
 531         return strcmp(aa->name, ab->name);
 532 }
 533
 534 static void arch__sort(void)
 535 {
 536         const int nmemb = ARRAY_SIZE(architectures);
 537
 538         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
 539 }
 540
 541 static struct arch *arch__find(const char *name)
 542 {
 543         const int nmemb = ARRAY_SIZE(architectures);
 544         static bool sorted;
 545
 546         if (!sorted) {
 547                 arch__sort();
 548                 sorted = true;
 549         }
 550
 551         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
 552 }
 553
 554 int symbol__alloc_hist(struct symbol *sym)
 555 {
 556         struct annotation *notes = symbol__annotation(sym);
 557         const size_t size = symbol__size(sym);
 558         size_t sizeof_sym_hist;
 559
 560         /* Check for overflow when calculating sizeof_sym_hist */
 561         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 562                 return -1;
 563
 564         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 565
 566         /* Check for overflow in zalloc argument */
 567         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 568                                 / symbol_conf.nr_events)
 569                 return -1;
 570
 571         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 572         if (notes->src == NULL)
 573                 return -1;
 574         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 575         notes->src->nr_histograms   = symbol_conf.nr_events;
 576         INIT_LIST_HEAD(&notes->src->source);
 577         return 0;
 578 }
 579
 580 /* The cycles histogram is lazily allocated. */
 581 static int symbol__alloc_hist_cycles(struct symbol *sym)
 582 {
 583         struct annotation *notes = symbol__annotation(sym);
 584         const size_t size = symbol__size(sym);
 585
 586         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
 587         if (notes->src->cycles_hist == NULL)
 588                 return -1;
 589         return 0;
 590 }
 591
 592 void symbol__annotate_zero_histograms(struct symbol *sym)
 593 {
 594         struct annotation *notes = symbol__annotation(sym);
 595
 596         pthread_mutex_lock(&notes->lock);
 597         if (notes->src != NULL) {
 598                 memset(notes->src->histograms, 0,
 599                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 600                 if (notes->src->cycles_hist)
 601                         memset(notes->src->cycles_hist, 0,
 602                                 symbol__size(sym) * sizeof(struct cyc_hist));
 603         }
 604         pthread_mutex_unlock(&notes->lock);
 605 }
 606
 607 static int __symbol__account_cycles(struct annotation *notes,
 608                                     u64 start,
 609                                     unsigned offset, unsigned cycles,
 610                                     unsigned have_start)
 611 {
 612         struct cyc_hist *ch;
 613
 614         ch = notes->src->cycles_hist;
 615         /*
 616          * For now we can only account one basic block per
 617          * final jump. But multiple could be overlapping.
 618          * Always account the longest one. So when
 619          * a shorter one has been already seen throw it away.
 620          *
 621          * We separately always account the full cycles.
 622          */
 623         ch[offset].num_aggr++;
 624         ch[offset].cycles_aggr += cycles;
 625
 626         if (!have_start && ch[offset].have_start)
 627                 return 0;
 628         if (ch[offset].num) {
 629                 if (have_start && (!ch[offset].have_start ||
 630                                    ch[offset].start > start)) {
 631                         ch[offset].have_start = 0;
 632                         ch[offset].cycles = 0;
 633                         ch[offset].num = 0;
 634                         if (ch[offset].reset < 0xffff)
 635                                 ch[offset].reset++;
 636                 } else if (have_start &&
 637                            ch[offset].start < start)
 638                         return 0;
 639         }
 640         ch[offset].have_start = have_start;
 641         ch[offset].start = start;
 642         ch[offset].cycles += cycles;
 643         ch[offset].num++;
 644         return 0;
 645 }
 646
 647 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 648                                       struct annotation *notes, int evidx, u64 addr)
 649 {
 650         unsigned offset;
 651         struct sym_hist *h;
 652
 653         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 654
 655         if ((addr < sym->start || addr >= sym->end) &&
 656             (addr != sym->end || sym->start != sym->end)) {
 657                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 658                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 659                 return -ERANGE;
 660         }
 661
 662         offset = addr - sym->start;
 663         h = annotation__histogram(notes, evidx);
 664         h->sum++;
 665         h->addr[offset]++;
 666
 667         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 668                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 669                   addr, addr - sym->start, evidx, h->addr[offset]);
 670         return 0;
 671 }
 672
 673 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
 674 {
 675         struct annotation *notes = symbol__annotation(sym);
 676
 677         if (notes->src == NULL) {
 678                 if (symbol__alloc_hist(sym) < 0)
 679                         return NULL;
 680         }
 681         if (!notes->src->cycles_hist && cycles) {
 682                 if (symbol__alloc_hist_cycles(sym) < 0)
 683                         return NULL;
 684         }
 685         return notes;
 686 }
 687
 688 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 689                                     int evidx, u64 addr)
 690 {
 691         struct annotation *notes;
 692
 693         if (sym == NULL)
 694                 return 0;
 695         notes = symbol__get_annotation(sym, false);
 696         if (notes == NULL)
 697                 return -ENOMEM;
 698         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 699 }
 700
 701 static int symbol__account_cycles(u64 addr, u64 start,
 702                                   struct symbol *sym, unsigned cycles)
 703 {
 704         struct annotation *notes;
 705         unsigned offset;
 706
 707         if (sym == NULL)
 708                 return 0;
 709         notes = symbol__get_annotation(sym, true);
 710         if (notes == NULL)
 711                 return -ENOMEM;
 712         if (addr < sym->start || addr >= sym->end)
 713                 return -ERANGE;
 714
 715         if (start) {
 716                 if (start < sym->start || start >= sym->end)
 717                         return -ERANGE;
 718                 if (start >= addr)
 719                         start = 0;
 720         }
 721         offset = addr - sym->start;
 722         return __symbol__account_cycles(notes,
 723                                         start ? start - sym->start : 0,
 724                                         offset, cycles,
 725                                         !!start);
 726 }
 727
 728 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 729                                     struct addr_map_symbol *start,
 730                                     unsigned cycles)
 731 {
 732         u64 saddr = 0;
 733         int err;
 734
 735         if (!cycles)
 736                 return 0;
 737
 738         /*
 739          * Only set start when IPC can be computed. We can only
 740          * compute it when the basic block is completely in a single
 741          * function.
 742          * Special case the case when the jump is elsewhere, but
 743          * it starts on the function start.
 744          */
 745         if (start &&
 746                 (start->sym == ams->sym ||
 747                  (ams->sym &&
 748                    start->addr == ams->sym->start + ams->map->start)))
 749                 saddr = start->al_addr;
 750         if (saddr == 0)
 751                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
 752                         ams->addr,
 753                         start ? start->addr : 0,
 754                         ams->sym ? ams->sym->start + ams->map->start : 0,
 755                         saddr);
 756         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
 757         if (err)
 758                 pr_debug2("account_cycles failed %d\n", err);
 759         return err;
 760 }
 761
 762 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 763 {
 764         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 765 }
 766
 767 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 768 {
 769         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 770 }
 771
 772 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
 773 {
 774         dl->ins.ops = ins__find(arch, dl->ins.name);
 775
 776         if (!dl->ins.ops)
 777                 return;
 778
 779         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0)
 780                 dl->ins.ops = NULL;
 781 }
 782
 783 static int disasm_line__parse(char *line, const char **namep, char **rawp)
 784 {
 785         char tmp, *name = ltrim(line);
 786
 787         if (name[0] == '\0')
 788                 return -1;
 789
 790         *rawp = name + 1;
 791
 792         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 793                 ++*rawp;
 794
 795         tmp = (*rawp)[0];
 796         (*rawp)[0] = '\0';
 797         *namep = strdup(name);
 798
 799         if (*namep == NULL)
 800                 goto out_free_name;
 801
 802         (*rawp)[0] = tmp;
 803         *rawp = ltrim(*rawp);
 804
 805         return 0;
 806
 807 out_free_name:
 808         free((void *)namep);
 809         *namep = NULL;
 810         return -1;
 811 }
 812
 813 static struct disasm_line *disasm_line__new(s64 offset, char *line,
 814                                             size_t privsize, int line_nr,
 815                                             struct arch *arch,
 816                                             struct map *map)
 817 {
 818         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 819
 820         if (dl != NULL) {
 821                 dl->offset = offset;
 822                 dl->line = strdup(line);
 823                 dl->line_nr = line_nr;
 824                 if (dl->line == NULL)
 825                         goto out_delete;
 826
 827                 if (offset != -1) {
 828                         if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0)
 829                                 goto out_free_line;
 830
 831                         disasm_line__init_ins(dl, arch, map);
 832                 }
 833         }
 834
 835         return dl;
 836
 837 out_free_line:
 838         zfree(&dl->line);
 839 out_delete:
 840         free(dl);
 841         return NULL;
 842 }
 843
 844 void disasm_line__free(struct disasm_line *dl)
 845 {
 846         zfree(&dl->line);
 847         if (dl->ins.ops && dl->ins.ops->free)
 848                 dl->ins.ops->free(&dl->ops);
 849         else
 850                 ins__delete(&dl->ops);
 851         free((void *)dl->ins.name);
 852         dl->ins.name = NULL;
 853         free(dl);
 854 }
 855
 856 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 857 {
 858         if (raw || !dl->ins.ops)
 859                 return scnprintf(bf, size, "%-6.6s %s", dl->ins.name, dl->ops.raw);
 860
 861         return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
 862 }
 863
 864 static void disasm__add(struct list_head *head, struct disasm_line *line)
 865 {
 866         list_add_tail(&line->node, head);
 867 }
 868
 869 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 870 {
 871         list_for_each_entry_continue(pos, head, node)
 872                 if (pos->offset >= 0)
 873                         return pos;
 874
 875         return NULL;
 876 }
 877
 878 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 879                             s64 end, const char **path, u64 *nr_samples)
 880 {
 881         struct source_line *src_line = notes->src->lines;
 882         double percent = 0.0;
 883         *nr_samples = 0;
 884
 885         if (src_line) {
 886                 size_t sizeof_src_line = sizeof(*src_line) +
 887                                 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
 888
 889                 while (offset < end) {
 890                         src_line = (void *)notes->src->lines +
 891                                         (sizeof_src_line * offset);
 892
 893                         if (*path == NULL)
 894                                 *path = src_line->path;
 895
 896                         percent += src_line->samples[evidx].percent;
 897                         *nr_samples += src_line->samples[evidx].nr;
 898                         offset++;
 899                 }
 900         } else {
 901                 struct sym_hist *h = annotation__histogram(notes, evidx);
 902                 unsigned int hits = 0;
 903
 904                 while (offset < end)
 905                         hits += h->addr[offset++];
 906
 907                 if (h->sum) {
 908                         *nr_samples = hits;
 909                         percent = 100.0 * hits / h->sum;
 910                 }
 911         }
 912
 913         return percent;
 914 }
 915
 916 static const char *annotate__address_color(struct block_range *br)
 917 {
 918         double cov = block_range__coverage(br);
 919
 920         if (cov >= 0) {
 921                 /* mark red for >75% coverage */
 922                 if (cov > 0.75)
 923                         return PERF_COLOR_RED;
 924
 925                 /* mark dull for <1% coverage */
 926                 if (cov < 0.01)
 927                         return PERF_COLOR_NORMAL;
 928         }
 929
 930         return PERF_COLOR_MAGENTA;
 931 }
 932
 933 static const char *annotate__asm_color(struct block_range *br)
 934 {
 935         double cov = block_range__coverage(br);
 936
 937         if (cov >= 0) {
 938                 /* mark dull for <1% coverage */
 939                 if (cov < 0.01)
 940                         return PERF_COLOR_NORMAL;
 941         }
 942
 943         return PERF_COLOR_BLUE;
 944 }
 945
 946 static void annotate__branch_printf(struct block_range *br, u64 addr)
 947 {
 948         bool emit_comment = true;
 949
 950         if (!br)
 951                 return;
 952
 953 #if 1
 954         if (br->is_target && br->start == addr) {
 955                 struct block_range *branch = br;
 956                 double p;
 957
 958                 /*
 959                  * Find matching branch to our target.
 960                  */
 961                 while (!branch->is_branch)
 962                         branch = block_range__next(branch);
 963
 964                 p = 100 *(double)br->entry / branch->coverage;
 965
 966                 if (p > 0.1) {
 967                         if (emit_comment) {
 968                                 emit_comment = false;
 969                                 printf("\t#");
 970                         }
 971
 972                         /*
 973                          * The percentage of coverage joined at this target in relation
 974                          * to the next branch.
 975                          */
 976                         printf(" +%.2f%%", p);
 977                 }
 978         }
 979 #endif
 980         if (br->is_branch && br->end == addr) {
 981                 double p = 100*(double)br->taken / br->coverage;
 982
 983                 if (p > 0.1) {
 984                         if (emit_comment) {
 985                                 emit_comment = false;
 986                                 printf("\t#");
 987                         }
 988
 989                         /*
 990                          * The percentage of coverage leaving at this branch, and
 991                          * its prediction ratio.
 992                          */
 993                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
 994                 }
 995         }
 996 }
 997
 998
 999 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
1000                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
1001                       int max_lines, struct disasm_line *queue)
1002 {
1003         static const char *prev_line;
1004         static const char *prev_color;
1005
1006         if (dl->offset != -1) {
1007                 const char *path = NULL;
1008                 u64 nr_samples;
1009                 double percent, max_percent = 0.0;
1010                 double *ppercents = &percent;
1011                 u64 *psamples = &nr_samples;
1012                 int i, nr_percent = 1;
1013                 const char *color;
1014                 struct annotation *notes = symbol__annotation(sym);
1015                 s64 offset = dl->offset;
1016                 const u64 addr = start + offset;
1017                 struct disasm_line *next;
1018                 struct block_range *br;
1019
1020                 next = disasm__get_next_ip_line(&notes->src->source, dl);
1021
1022                 if (perf_evsel__is_group_event(evsel)) {
1023                         nr_percent = evsel->nr_members;
1024                         ppercents = calloc(nr_percent, sizeof(double));
1025                         psamples = calloc(nr_percent, sizeof(u64));
1026                         if (ppercents == NULL || psamples == NULL) {
1027                                 return -1;
1028                         }
1029                 }
1030
1031                 for (i = 0; i < nr_percent; i++) {
1032                         percent = disasm__calc_percent(notes,
1033                                         notes->src->lines ? i : evsel->idx + i,
1034                                         offset,
1035                                         next ? next->offset : (s64) len,
1036                                         &path, &nr_samples);
1037
1038                         ppercents[i] = percent;
1039                         psamples[i] = nr_samples;
1040                         if (percent > max_percent)
1041                                 max_percent = percent;
1042                 }
1043
1044                 if (max_percent < min_pcnt)
1045                         return -1;
1046
1047                 if (max_lines && printed >= max_lines)
1048                         return 1;
1049
1050                 if (queue != NULL) {
1051                         list_for_each_entry_from(queue, &notes->src->source, node) {
1052                                 if (queue == dl)
1053                                         break;
1054                                 disasm_line__print(queue, sym, start, evsel, len,
1055                                                     0, 0, 1, NULL);
1056                         }
1057                 }
1058
1059                 color = get_percent_color(max_percent);
1060
1061                 /*
1062                  * Also color the filename and line if needed, with
1063                  * the same color than the percentage. Don't print it
1064                  * twice for close colored addr with the same filename:line
1065                  */
1066                 if (path) {
1067                         if (!prev_line || strcmp(prev_line, path)
1068                                        || color != prev_color) {
1069                                 color_fprintf(stdout, color, " %s", path);
1070                                 prev_line = path;
1071                                 prev_color = color;
1072                         }
1073                 }
1074
1075                 for (i = 0; i < nr_percent; i++) {
1076                         percent = ppercents[i];
1077                         nr_samples = psamples[i];
1078                         color = get_percent_color(percent);
1079
1080                         if (symbol_conf.show_total_period)
1081                                 color_fprintf(stdout, color, " %7" PRIu64,
1082                                               nr_samples);
1083                         else
1084                                 color_fprintf(stdout, color, " %7.2f", percent);
1085                 }
1086
1087                 printf(" :      ");
1088
1089                 br = block_range__find(addr);
1090                 color_fprintf(stdout, annotate__address_color(br), "  %" PRIx64 ":", addr);
1091                 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line);
1092                 annotate__branch_printf(br, addr);
1093                 printf("\n");
1094
1095                 if (ppercents != &percent)
1096                         free(ppercents);
1097
1098                 if (psamples != &nr_samples)
1099                         free(psamples);
1100
1101         } else if (max_lines && printed >= max_lines)
1102                 return 1;
1103         else {
1104                 int width = 8;
1105
1106                 if (queue)
1107                         return -1;
1108
1109                 if (perf_evsel__is_group_event(evsel))
1110                         width *= evsel->nr_members;
1111
1112                 if (!*dl->line)
1113                         printf(" %*s:\n", width, " ");
1114                 else
1115                         printf(" %*s:   %s\n", width, " ", dl->line);
1116         }
1117
1118         return 0;
1119 }
1120
1121 /*
1122  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1123  * which looks like following
1124  *
1125  *  0000000000415500 <_init>:
1126  *    415500:       sub    $0x8,%rsp
1127  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1128  *    41550b:       test   %rax,%rax
1129  *    41550e:       je     415515 <_init+0x15>
1130  *    415510:       callq  416e70 <__gmon_start__@plt>
1131  *    415515:       add    $0x8,%rsp
1132  *    415519:       retq
1133  *
1134  * it will be parsed and saved into struct disasm_line as
1135  *  <offset>       <name>  <ops.raw>
1136  *
1137  * The offset will be a relative offset from the start of the symbol and -1
1138  * means that it's not a disassembly line so should be treated differently.
1139  * The ops.raw part will be parsed further according to type of the instruction.
1140  */
1141 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
1142                                       struct arch *arch,
1143                                       FILE *file, size_t privsize,
1144                                       int *line_nr)
1145 {
1146         struct annotation *notes = symbol__annotation(sym);
1147         struct disasm_line *dl;
1148         char *line = NULL, *parsed_line, *tmp, *tmp2;
1149         size_t line_len;
1150         s64 line_ip, offset = -1;
1151         regmatch_t match[2];
1152
1153         if (getline(&line, &line_len, file) < 0)
1154                 return -1;
1155
1156         if (!line)
1157                 return -1;
1158
1159         line_ip = -1;
1160         parsed_line = rtrim(line);
1161
1162         /* /filename:linenr ? Save line number and ignore. */
1163         if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1164                 *line_nr = atoi(parsed_line + match[1].rm_so);
1165                 return 0;
1166         }
1167
1168         tmp = ltrim(parsed_line);
1169         if (*tmp) {
1170                 /*
1171                  * Parse hexa addresses followed by ':'
1172                  */
1173                 line_ip = strtoull(tmp, &tmp2, 16);
1174                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1175                         line_ip = -1;
1176         }
1177
1178         if (line_ip != -1) {
1179                 u64 start = map__rip_2objdump(map, sym->start),
1180                     end = map__rip_2objdump(map, sym->end);
1181
1182                 offset = line_ip - start;
1183                 if ((u64)line_ip < start || (u64)line_ip >= end)
1184                         offset = -1;
1185                 else
1186                         parsed_line = tmp2 + 1;
1187         }
1188
1189         dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map);
1190         free(line);
1191         (*line_nr)++;
1192
1193         if (dl == NULL)
1194                 return -1;
1195
1196         if (!disasm_line__has_offset(dl)) {
1197                 dl->ops.target.offset = dl->ops.target.addr -
1198                                         map__rip_2objdump(map, sym->start);
1199                 dl->ops.target.offset_avail = true;
1200         }
1201
1202         /* kcore has no symbols, so add the call target name */
1203         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.name) {
1204                 struct addr_map_symbol target = {
1205                         .map = map,
1206                         .addr = dl->ops.target.addr,
1207                 };
1208
1209                 if (!map_groups__find_ams(&target) &&
1210                     target.sym->start == target.al_addr)
1211                         dl->ops.target.name = strdup(target.sym->name);
1212         }
1213
1214         disasm__add(&notes->src->source, dl);
1215
1216         return 0;
1217 }
1218
1219 static __attribute__((constructor)) void symbol__init_regexpr(void)
1220 {
1221         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1222 }
1223
1224 static void delete_last_nop(struct symbol *sym)
1225 {
1226         struct annotation *notes = symbol__annotation(sym);
1227         struct list_head *list = &notes->src->source;
1228         struct disasm_line *dl;
1229
1230         while (!list_empty(list)) {
1231                 dl = list_entry(list->prev, struct disasm_line, node);
1232
1233                 if (dl->ins.ops) {
1234                         if (dl->ins.ops != &nop_ops)
1235                                 return;
1236                 } else {
1237                         if (!strstr(dl->line, " nop ") &&
1238                             !strstr(dl->line, " nopl ") &&
1239                             !strstr(dl->line, " nopw "))
1240                                 return;
1241                 }
1242
1243                 list_del(&dl->node);
1244                 disasm_line__free(dl);
1245         }
1246 }
1247
1248 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
1249                               int errnum, char *buf, size_t buflen)
1250 {
1251         struct dso *dso = map->dso;
1252
1253         BUG_ON(buflen == 0);
1254
1255         if (errnum >= 0) {
1256                 str_error_r(errnum, buf, buflen);
1257                 return 0;
1258         }
1259
1260         switch (errnum) {
1261         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1262                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1263                 char *build_id_msg = NULL;
1264
1265                 if (dso->has_build_id) {
1266                         build_id__sprintf(dso->build_id,
1267                                           sizeof(dso->build_id), bf + 15);
1268                         build_id_msg = bf;
1269                 }
1270                 scnprintf(buf, buflen,
1271                           "No vmlinux file%s\nwas found in the path.\n\n"
1272                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1273                           "Please use:\n\n"
1274                           "  perf buildid-cache -vu vmlinux\n\n"
1275                           "or:\n\n"
1276                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1277         }
1278                 break;
1279         default:
1280                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1281                 break;
1282         }
1283
1284         return 0;
1285 }
1286
1287 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1288 {
1289         char linkname[PATH_MAX];
1290         char *build_id_filename;
1291         char *build_id_path = NULL;
1292
1293         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1294             !dso__is_kcore(dso))
1295                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1296
1297         build_id_filename = dso__build_id_filename(dso, NULL, 0);
1298         if (build_id_filename) {
1299                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1300                 free(build_id_filename);
1301         } else {
1302                 if (dso->has_build_id)
1303                         return ENOMEM;
1304                 goto fallback;
1305         }
1306
1307         build_id_path = strdup(filename);
1308         if (!build_id_path)
1309                 return -1;
1310
1311         dirname(build_id_path);
1312
1313         if (dso__is_kcore(dso) ||
1314             readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
1315             strstr(linkname, DSO__NAME_KALLSYMS) ||
1316             access(filename, R_OK)) {
1317 fallback:
1318                 /*
1319                  * If we don't have build-ids or the build-id file isn't in the
1320                  * cache, or is just a kallsyms file, well, lets hope that this
1321                  * DSO is the same as when 'perf record' ran.
1322                  */
1323                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1324         }
1325
1326         free(build_id_path);
1327         return 0;
1328 }
1329
1330 static const char *annotate__norm_arch(const char *arch_name)
1331 {
1332         struct utsname uts;
1333
1334         if (!arch_name) { /* Assume we are annotating locally. */
1335                 if (uname(&uts) < 0)
1336                         return NULL;
1337                 arch_name = uts.machine;
1338         }
1339         return normalize_arch((char *)arch_name);
1340 }
1341
1342 int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize)
1343 {
1344         struct dso *dso = map->dso;
1345         char command[PATH_MAX * 2];
1346         struct arch *arch = NULL;
1347         FILE *file;
1348         char symfs_filename[PATH_MAX];
1349         struct kcore_extract kce;
1350         bool delete_extract = false;
1351         int stdout_fd[2];
1352         int lineno = 0;
1353         int nline;
1354         pid_t pid;
1355         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1356
1357         if (err)
1358                 return err;
1359
1360         arch_name = annotate__norm_arch(arch_name);
1361         if (!arch_name)
1362                 return -1;
1363
1364         arch = arch__find(arch_name);
1365         if (arch == NULL)
1366                 return -ENOTSUP;
1367
1368         if (arch->init) {
1369                 err = arch->init(arch);
1370                 if (err) {
1371                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
1372                         return err;
1373                 }
1374         }
1375
1376         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1377                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1378                  map->unmap_ip(map, sym->end));
1379
1380         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1381                  dso, dso->long_name, sym, sym->name);
1382
1383         if (dso__is_kcore(dso)) {
1384                 kce.kcore_filename = symfs_filename;
1385                 kce.addr = map__rip_2objdump(map, sym->start);
1386                 kce.offs = sym->start;
1387                 kce.len = sym->end - sym->start;
1388                 if (!kcore_extract__create(&kce)) {
1389                         delete_extract = true;
1390                         strlcpy(symfs_filename, kce.extract_filename,
1391                                 sizeof(symfs_filename));
1392                 }
1393         } else if (dso__needs_decompress(dso)) {
1394                 char tmp[PATH_MAX];
1395                 struct kmod_path m;
1396                 int fd;
1397                 bool ret;
1398
1399                 if (kmod_path__parse_ext(&m, symfs_filename))
1400                         goto out;
1401
1402                 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1403
1404                 fd = mkstemp(tmp);
1405                 if (fd < 0) {
1406                         free(m.ext);
1407                         goto out;
1408                 }
1409
1410                 ret = decompress_to_file(m.ext, symfs_filename, fd);
1411
1412                 if (ret)
1413                         pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename);
1414
1415                 free(m.ext);
1416                 close(fd);
1417
1418                 if (!ret)
1419                         goto out;
1420
1421                 strcpy(symfs_filename, tmp);
1422         }
1423
1424         snprintf(command, sizeof(command),
1425                  "%s %s%s --start-address=0x%016" PRIx64
1426                  " --stop-address=0x%016" PRIx64
1427                  " -l -d %s %s -C %s 2>/dev/null|grep -v %s:|expand",
1428                  objdump_path ? objdump_path : "objdump",
1429                  disassembler_style ? "-M " : "",
1430                  disassembler_style ? disassembler_style : "",
1431                  map__rip_2objdump(map, sym->start),
1432                  map__rip_2objdump(map, sym->end),
1433                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1434                  symbol_conf.annotate_src ? "-S" : "",
1435                  symfs_filename, symfs_filename);
1436
1437         pr_debug("Executing: %s\n", command);
1438
1439         err = -1;
1440         if (pipe(stdout_fd) < 0) {
1441                 pr_err("Failure creating the pipe to run %s\n", command);
1442                 goto out_remove_tmp;
1443         }
1444
1445         pid = fork();
1446         if (pid < 0) {
1447                 pr_err("Failure forking to run %s\n", command);
1448                 goto out_close_stdout;
1449         }
1450
1451         if (pid == 0) {
1452                 close(stdout_fd[0]);
1453                 dup2(stdout_fd[1], 1);
1454                 close(stdout_fd[1]);
1455                 execl("/bin/sh", "sh", "-c", command, NULL);
1456                 perror(command);
1457                 exit(-1);
1458         }
1459
1460         close(stdout_fd[1]);
1461
1462         file = fdopen(stdout_fd[0], "r");
1463         if (!file) {
1464                 pr_err("Failure creating FILE stream for %s\n", command);
1465                 /*
1466                  * If we were using debug info should retry with
1467                  * original binary.
1468                  */
1469                 goto out_remove_tmp;
1470         }
1471
1472         nline = 0;
1473         while (!feof(file)) {
1474                 /*
1475                  * The source code line number (lineno) needs to be kept in
1476                  * accross calls to symbol__parse_objdump_line(), so that it
1477                  * can associate it with the instructions till the next one.
1478                  * See disasm_line__new() and struct disasm_line::line_nr.
1479                  */
1480                 if (symbol__parse_objdump_line(sym, map, arch, file, privsize,
1481                             &lineno) < 0)
1482                         break;
1483                 nline++;
1484         }
1485
1486         if (nline == 0)
1487                 pr_err("No output from %s\n", command);
1488
1489         /*
1490          * kallsyms does not have symbol sizes so there may a nop at the end.
1491          * Remove it.
1492          */
1493         if (dso__is_kcore(dso))
1494                 delete_last_nop(sym);
1495
1496         fclose(file);
1497         err = 0;
1498 out_remove_tmp:
1499         close(stdout_fd[0]);
1500
1501         if (dso__needs_decompress(dso))
1502                 unlink(symfs_filename);
1503
1504         if (delete_extract)
1505                 kcore_extract__delete(&kce);
1506 out:
1507         return err;
1508
1509 out_close_stdout:
1510         close(stdout_fd[1]);
1511         goto out_remove_tmp;
1512 }
1513
1514 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1515 {
1516         struct source_line *iter;
1517         struct rb_node **p = &root->rb_node;
1518         struct rb_node *parent = NULL;
1519         int i, ret;
1520
1521         while (*p != NULL) {
1522                 parent = *p;
1523                 iter = rb_entry(parent, struct source_line, node);
1524
1525                 ret = strcmp(iter->path, src_line->path);
1526                 if (ret == 0) {
1527                         for (i = 0; i < src_line->nr_pcnt; i++)
1528                                 iter->samples[i].percent_sum += src_line->samples[i].percent;
1529                         return;
1530                 }
1531
1532                 if (ret < 0)
1533                         p = &(*p)->rb_left;
1534                 else
1535                         p = &(*p)->rb_right;
1536         }
1537
1538         for (i = 0; i < src_line->nr_pcnt; i++)
1539                 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1540
1541         rb_link_node(&src_line->node, parent, p);
1542         rb_insert_color(&src_line->node, root);
1543 }
1544
1545 static int cmp_source_line(struct source_line *a, struct source_line *b)
1546 {
1547         int i;
1548
1549         for (i = 0; i < a->nr_pcnt; i++) {
1550                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1551                         continue;
1552                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1553         }
1554
1555         return 0;
1556 }
1557
1558 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1559 {
1560         struct source_line *iter;
1561         struct rb_node **p = &root->rb_node;
1562         struct rb_node *parent = NULL;
1563
1564         while (*p != NULL) {
1565                 parent = *p;
1566                 iter = rb_entry(parent, struct source_line, node);
1567
1568                 if (cmp_source_line(src_line, iter))
1569                         p = &(*p)->rb_left;
1570                 else
1571                         p = &(*p)->rb_right;
1572         }
1573
1574         rb_link_node(&src_line->node, parent, p);
1575         rb_insert_color(&src_line->node, root);
1576 }
1577
1578 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1579 {
1580         struct source_line *src_line;
1581         struct rb_node *node;
1582
1583         node = rb_first(src_root);
1584         while (node) {
1585                 struct rb_node *next;
1586
1587                 src_line = rb_entry(node, struct source_line, node);
1588                 next = rb_next(node);
1589                 rb_erase(node, src_root);
1590
1591                 __resort_source_line(dest_root, src_line);
1592                 node = next;
1593         }
1594 }
1595
1596 static void symbol__free_source_line(struct symbol *sym, int len)
1597 {
1598         struct annotation *notes = symbol__annotation(sym);
1599         struct source_line *src_line = notes->src->lines;
1600         size_t sizeof_src_line;
1601         int i;
1602
1603         sizeof_src_line = sizeof(*src_line) +
1604                           (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1605
1606         for (i = 0; i < len; i++) {
1607                 free_srcline(src_line->path);
1608                 src_line = (void *)src_line + sizeof_src_line;
1609         }
1610
1611         zfree(&notes->src->lines);
1612 }
1613
1614 /* Get the filename:line for the colored entries */
1615 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1616                                    struct perf_evsel *evsel,
1617                                    struct rb_root *root, int len)
1618 {
1619         u64 start;
1620         int i, k;
1621         int evidx = evsel->idx;
1622         struct source_line *src_line;
1623         struct annotation *notes = symbol__annotation(sym);
1624         struct sym_hist *h = annotation__histogram(notes, evidx);
1625         struct rb_root tmp_root = RB_ROOT;
1626         int nr_pcnt = 1;
1627         u64 h_sum = h->sum;
1628         size_t sizeof_src_line = sizeof(struct source_line);
1629
1630         if (perf_evsel__is_group_event(evsel)) {
1631                 for (i = 1; i < evsel->nr_members; i++) {
1632                         h = annotation__histogram(notes, evidx + i);
1633                         h_sum += h->sum;
1634                 }
1635                 nr_pcnt = evsel->nr_members;
1636                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1637         }
1638
1639         if (!h_sum)
1640                 return 0;
1641
1642         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1643         if (!notes->src->lines)
1644                 return -1;
1645
1646         start = map__rip_2objdump(map, sym->start);
1647
1648         for (i = 0; i < len; i++) {
1649                 u64 offset, nr_samples;
1650                 double percent_max = 0.0;
1651
1652                 src_line->nr_pcnt = nr_pcnt;
1653
1654                 for (k = 0; k < nr_pcnt; k++) {
1655                         double percent = 0.0;
1656
1657                         h = annotation__histogram(notes, evidx + k);
1658                         nr_samples = h->addr[i];
1659                         if (h->sum)
1660                                 percent = 100.0 * nr_samples / h->sum;
1661
1662                         if (percent > percent_max)
1663                                 percent_max = percent;
1664                         src_line->samples[k].percent = percent;
1665                         src_line->samples[k].nr = nr_samples;
1666                 }
1667
1668                 if (percent_max <= 0.5)
1669                         goto next;
1670
1671                 offset = start + i;
1672                 src_line->path = get_srcline(map->dso, offset, NULL,
1673                                              false, true);
1674                 insert_source_line(&tmp_root, src_line);
1675
1676         next:
1677                 src_line = (void *)src_line + sizeof_src_line;
1678         }
1679
1680         resort_source_line(root, &tmp_root);
1681         return 0;
1682 }
1683
1684 static void print_summary(struct rb_root *root, const char *filename)
1685 {
1686         struct source_line *src_line;
1687         struct rb_node *node;
1688
1689         printf("\nSorted summary for file %s\n", filename);
1690         printf("----------------------------------------------\n\n");
1691
1692         if (RB_EMPTY_ROOT(root)) {
1693                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1694                 return;
1695         }
1696
1697         node = rb_first(root);
1698         while (node) {
1699                 double percent, percent_max = 0.0;
1700                 const char *color;
1701                 char *path;
1702                 int i;
1703
1704                 src_line = rb_entry(node, struct source_line, node);
1705                 for (i = 0; i < src_line->nr_pcnt; i++) {
1706                         percent = src_line->samples[i].percent_sum;
1707                         color = get_percent_color(percent);
1708                         color_fprintf(stdout, color, " %7.2f", percent);
1709
1710                         if (percent > percent_max)
1711                                 percent_max = percent;
1712                 }
1713
1714                 path = src_line->path;
1715                 color = get_percent_color(percent_max);
1716                 color_fprintf(stdout, color, " %s\n", path);
1717
1718                 node = rb_next(node);
1719         }
1720 }
1721
1722 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1723 {
1724         struct annotation *notes = symbol__annotation(sym);
1725         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1726         u64 len = symbol__size(sym), offset;
1727
1728         for (offset = 0; offset < len; ++offset)
1729                 if (h->addr[offset] != 0)
1730                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1731                                sym->start + offset, h->addr[offset]);
1732         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1733 }
1734
1735 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1736                             struct perf_evsel *evsel, bool full_paths,
1737                             int min_pcnt, int max_lines, int context)
1738 {
1739         struct dso *dso = map->dso;
1740         char *filename;
1741         const char *d_filename;
1742         const char *evsel_name = perf_evsel__name(evsel);
1743         struct annotation *notes = symbol__annotation(sym);
1744         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1745         struct disasm_line *pos, *queue = NULL;
1746         u64 start = map__rip_2objdump(map, sym->start);
1747         int printed = 2, queue_len = 0;
1748         int more = 0;
1749         u64 len;
1750         int width = 8;
1751         int graph_dotted_len;
1752
1753         filename = strdup(dso->long_name);
1754         if (!filename)
1755                 return -ENOMEM;
1756
1757         if (full_paths)
1758                 d_filename = filename;
1759         else
1760                 d_filename = basename(filename);
1761
1762         len = symbol__size(sym);
1763
1764         if (perf_evsel__is_group_event(evsel))
1765                 width *= evsel->nr_members;
1766
1767         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
1768                width, width, "Percent", d_filename, evsel_name, h->sum);
1769
1770         printf("%-*.*s----\n",
1771                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1772
1773         if (verbose > 0)
1774                 symbol__annotate_hits(sym, evsel);
1775
1776         list_for_each_entry(pos, &notes->src->source, node) {
1777                 if (context && queue == NULL) {
1778                         queue = pos;
1779                         queue_len = 0;
1780                 }
1781
1782                 switch (disasm_line__print(pos, sym, start, evsel, len,
1783                                             min_pcnt, printed, max_lines,
1784                                             queue)) {
1785                 case 0:
1786                         ++printed;
1787                         if (context) {
1788                                 printed += queue_len;
1789                                 queue = NULL;
1790                                 queue_len = 0;
1791                         }
1792                         break;
1793                 case 1:
1794                         /* filtered by max_lines */
1795                         ++more;
1796                         break;
1797                 case -1:
1798                 default:
1799                         /*
1800                          * Filtered by min_pcnt or non IP lines when
1801                          * context != 0
1802                          */
1803                         if (!context)
1804                                 break;
1805                         if (queue_len == context)
1806                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1807                         else
1808                                 ++queue_len;
1809                         break;
1810                 }
1811         }
1812
1813         free(filename);
1814
1815         return more;
1816 }
1817
1818 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1819 {
1820         struct annotation *notes = symbol__annotation(sym);
1821         struct sym_hist *h = annotation__histogram(notes, evidx);
1822
1823         memset(h, 0, notes->src->sizeof_sym_hist);
1824 }
1825
1826 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1827 {
1828         struct annotation *notes = symbol__annotation(sym);
1829         struct sym_hist *h = annotation__histogram(notes, evidx);
1830         int len = symbol__size(sym), offset;
1831
1832         h->sum = 0;
1833         for (offset = 0; offset < len; ++offset) {
1834                 h->addr[offset] = h->addr[offset] * 7 / 8;
1835                 h->sum += h->addr[offset];
1836         }
1837 }
1838
1839 void disasm__purge(struct list_head *head)
1840 {
1841         struct disasm_line *pos, *n;
1842
1843         list_for_each_entry_safe(pos, n, head, node) {
1844                 list_del(&pos->node);
1845                 disasm_line__free(pos);
1846         }
1847 }
1848
1849 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1850 {
1851         size_t printed;
1852
1853         if (dl->offset == -1)
1854                 return fprintf(fp, "%s\n", dl->line);
1855
1856         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->ins.name);
1857
1858         if (dl->ops.raw[0] != '\0') {
1859                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1860                                    dl->ops.raw);
1861         }
1862
1863         return printed + fprintf(fp, "\n");
1864 }
1865
1866 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1867 {
1868         struct disasm_line *pos;
1869         size_t printed = 0;
1870
1871         list_for_each_entry(pos, head, node)
1872                 printed += disasm_line__fprintf(pos, fp);
1873
1874         return printed;
1875 }
1876
1877 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1878                          struct perf_evsel *evsel, bool print_lines,
1879                          bool full_paths, int min_pcnt, int max_lines)
1880 {
1881         struct dso *dso = map->dso;
1882         struct rb_root source_line = RB_ROOT;
1883         u64 len;
1884
1885         if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0)
1886                 return -1;
1887
1888         len = symbol__size(sym);
1889
1890         if (print_lines) {
1891                 srcline_full_filename = full_paths;
1892                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1893                 print_summary(&source_line, dso->long_name);
1894         }
1895
1896         symbol__annotate_printf(sym, map, evsel, full_paths,
1897                                 min_pcnt, max_lines, 0);
1898         if (print_lines)
1899                 symbol__free_source_line(sym, len);
1900
1901         disasm__purge(&symbol__annotation(sym)->src->source);
1902
1903         return 0;
1904 }
1905
1906 bool ui__has_annotation(void)
1907 {
1908         return use_browser == 1 && perf_hpp_list.sym;
1909 }