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 <sys/utsname.h>
  26
  27 const char      *disassembler_style;
  28 const char      *objdump_path;
  29 static regex_t   file_lineno;
  30
  31 static struct ins_ops *ins__find(struct arch *arch, const char *name);
  32 static void ins__sort(struct arch *arch);
  33 static int disasm_line__parse(char *line, const char **namep, char **rawp);
  34
  35 struct arch {
  36         const char      *name;
  37         struct ins      *instructions;
  38         size_t          nr_instructions;
  39         size_t          nr_instructions_allocated;
  40         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
  41         bool            sorted_instructions;
  42         bool            initialized;
  43         void            *priv;
  44         int             (*init)(struct arch *arch);
  45         struct          {
  46                 char comment_char;
  47                 char skip_functions_char;
  48         } objdump;
  49 };
  50
  51 static struct ins_ops call_ops;
  52 static struct ins_ops dec_ops;
  53 static struct ins_ops jump_ops;
  54 static struct ins_ops mov_ops;
  55 static struct ins_ops nop_ops;
  56 static struct ins_ops lock_ops;
  57 static struct ins_ops ret_ops;
  58
  59 static int arch__grow_instructions(struct arch *arch)
  60 {
  61         struct ins *new_instructions;
  62         size_t new_nr_allocated;
  63
  64         if (arch->nr_instructions_allocated == 0 && arch->instructions)
  65                 goto grow_from_non_allocated_table;
  66
  67         new_nr_allocated = arch->nr_instructions_allocated + 128;
  68         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
  69         if (new_instructions == NULL)
  70                 return -1;
  71
  72 out_update_instructions:
  73         arch->instructions = new_instructions;
  74         arch->nr_instructions_allocated = new_nr_allocated;
  75         return 0;
  76
  77 grow_from_non_allocated_table:
  78         new_nr_allocated = arch->nr_instructions + 128;
  79         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
  80         if (new_instructions == NULL)
  81                 return -1;
  82
  83         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
  84         goto out_update_instructions;
  85 }
  86
  87 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
  88 {
  89         struct ins *ins;
  90
  91         if (arch->nr_instructions == arch->nr_instructions_allocated &&
  92             arch__grow_instructions(arch))
  93                 return -1;
  94
  95         ins = &arch->instructions[arch->nr_instructions];
  96         ins->name = strdup(name);
  97         if (!ins->name)
  98                 return -1;
  99
 100         ins->ops  = ops;
 101         arch->nr_instructions++;
 102
 103         ins__sort(arch);
 104         return 0;
 105 }
 106
 107 #include "arch/arm/annotate/instructions.c"
 108 #include "arch/arm64/annotate/instructions.c"
 109 #include "arch/x86/annotate/instructions.c"
 110 #include "arch/powerpc/annotate/instructions.c"
 111
 112 static struct arch architectures[] = {
 113         {
 114                 .name = "arm",
 115                 .init = arm__annotate_init,
 116         },
 117         {
 118                 .name = "arm64",
 119                 .init = arm64__annotate_init,
 120         },
 121         {
 122                 .name = "x86",
 123                 .instructions = x86__instructions,
 124                 .nr_instructions = ARRAY_SIZE(x86__instructions),
 125                 .objdump =  {
 126                         .comment_char = '#',
 127                 },
 128         },
 129         {
 130                 .name = "powerpc",
 131                 .init = powerpc__annotate_init,
 132         },
 133         {
 134                 .name = "s390",
 135                 .objdump =  {
 136                         .comment_char = '#',
 137                 },
 138         },
 139 };
 140
 141 static void ins__delete(struct ins_operands *ops)
 142 {
 143         if (ops == NULL)
 144                 return;
 145         zfree(&ops->source.raw);
 146         zfree(&ops->source.name);
 147         zfree(&ops->target.raw);
 148         zfree(&ops->target.name);
 149 }
 150
 151 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
 152                               struct ins_operands *ops)
 153 {
 154         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
 155 }
 156
 157 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
 158                   struct ins_operands *ops)
 159 {
 160         if (ins->ops->scnprintf)
 161                 return ins->ops->scnprintf(ins, bf, size, ops);
 162
 163         return ins__raw_scnprintf(ins, bf, size, ops);
 164 }
 165
 166 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 167 {
 168         char *endptr, *tok, *name;
 169
 170         ops->target.addr = strtoull(ops->raw, &endptr, 16);
 171
 172         name = strchr(endptr, '<');
 173         if (name == NULL)
 174                 goto indirect_call;
 175
 176         name++;
 177
 178         if (arch->objdump.skip_functions_char &&
 179             strchr(name, arch->objdump.skip_functions_char))
 180                 return -1;
 181
 182         tok = strchr(name, '>');
 183         if (tok == NULL)
 184                 return -1;
 185
 186         *tok = '\0';
 187         ops->target.name = strdup(name);
 188         *tok = '>';
 189
 190         return ops->target.name == NULL ? -1 : 0;
 191
 192 indirect_call:
 193         tok = strchr(endptr, '*');
 194         if (tok == NULL) {
 195                 struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
 196                 if (sym != NULL)
 197                         ops->target.name = strdup(sym->name);
 198                 else
 199                         ops->target.addr = 0;
 200                 return 0;
 201         }
 202
 203         ops->target.addr = strtoull(tok + 1, NULL, 16);
 204         return 0;
 205 }
 206
 207 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
 208                            struct ins_operands *ops)
 209 {
 210         if (ops->target.name)
 211                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
 212
 213         if (ops->target.addr == 0)
 214                 return ins__raw_scnprintf(ins, bf, size, ops);
 215
 216         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
 217 }
 218
 219 static struct ins_ops call_ops = {
 220         .parse     = call__parse,
 221         .scnprintf = call__scnprintf,
 222 };
 223
 224 bool ins__is_call(const struct ins *ins)
 225 {
 226         return ins->ops == &call_ops;
 227 }
 228
 229 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 230 {
 231         const char *s = strchr(ops->raw, '+');
 232         const char *c = strchr(ops->raw, ',');
 233
 234         if (c++ != NULL)
 235                 ops->target.addr = strtoull(c, NULL, 16);
 236         else
 237                 ops->target.addr = strtoull(ops->raw, NULL, 16);
 238
 239         if (s++ != NULL) {
 240                 ops->target.offset = strtoull(s, NULL, 16);
 241                 ops->target.offset_avail = true;
 242         } else {
 243                 ops->target.offset_avail = false;
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 250                            struct ins_operands *ops)
 251 {
 252         if (!ops->target.addr || ops->target.offset < 0)
 253                 return ins__raw_scnprintf(ins, bf, size, ops);
 254
 255         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 256 }
 257
 258 static struct ins_ops jump_ops = {
 259         .parse     = jump__parse,
 260         .scnprintf = jump__scnprintf,
 261 };
 262
 263 bool ins__is_jump(const struct ins *ins)
 264 {
 265         return ins->ops == &jump_ops;
 266 }
 267
 268 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 269 {
 270         char *endptr, *name, *t;
 271
 272         if (strstr(raw, "(%rip)") == NULL)
 273                 return 0;
 274
 275         *addrp = strtoull(comment, &endptr, 16);
 276         name = strchr(endptr, '<');
 277         if (name == NULL)
 278                 return -1;
 279
 280         name++;
 281
 282         t = strchr(name, '>');
 283         if (t == NULL)
 284                 return 0;
 285
 286         *t = '\0';
 287         *namep = strdup(name);
 288         *t = '>';
 289
 290         return 0;
 291 }
 292
 293 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 294 {
 295         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 296         if (ops->locked.ops == NULL)
 297                 return 0;
 298
 299         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
 300                 goto out_free_ops;
 301
 302         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
 303
 304         if (ops->locked.ins.ops == NULL)
 305                 goto out_free_ops;
 306
 307         if (ops->locked.ins.ops->parse &&
 308             ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 0)
 309                 goto out_free_ops;
 310
 311         return 0;
 312
 313 out_free_ops:
 314         zfree(&ops->locked.ops);
 315         return 0;
 316 }
 317
 318 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 319                            struct ins_operands *ops)
 320 {
 321         int printed;
 322
 323         if (ops->locked.ins.ops == NULL)
 324                 return ins__raw_scnprintf(ins, bf, size, ops);
 325
 326         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 327         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
 328                                         size - printed, ops->locked.ops);
 329 }
 330
 331 static void lock__delete(struct ins_operands *ops)
 332 {
 333         struct ins *ins = &ops->locked.ins;
 334
 335         if (ins->ops && ins->ops->free)
 336                 ins->ops->free(ops->locked.ops);
 337         else
 338                 ins__delete(ops->locked.ops);
 339
 340         zfree(&ops->locked.ops);
 341         zfree(&ops->target.raw);
 342         zfree(&ops->target.name);
 343 }
 344
 345 static struct ins_ops lock_ops = {
 346         .free      = lock__delete,
 347         .parse     = lock__parse,
 348         .scnprintf = lock__scnprintf,
 349 };
 350
 351 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused)
 352 {
 353         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 354
 355         if (s == NULL)
 356                 return -1;
 357
 358         *s = '\0';
 359         ops->source.raw = strdup(ops->raw);
 360         *s = ',';
 361
 362         if (ops->source.raw == NULL)
 363                 return -1;
 364
 365         target = ++s;
 366         comment = strchr(s, arch->objdump.comment_char);
 367
 368         if (comment != NULL)
 369                 s = comment - 1;
 370         else
 371                 s = strchr(s, '\0') - 1;
 372
 373         while (s > target && isspace(s[0]))
 374                 --s;
 375         s++;
 376         prev = *s;
 377         *s = '\0';
 378
 379         ops->target.raw = strdup(target);
 380         *s = prev;
 381
 382         if (ops->target.raw == NULL)
 383                 goto out_free_source;
 384
 385         if (comment == NULL)
 386                 return 0;
 387
 388         while (comment[0] != '\0' && isspace(comment[0]))
 389                 ++comment;
 390
 391         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 392         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 393
 394         return 0;
 395
 396 out_free_source:
 397         zfree(&ops->source.raw);
 398         return -1;
 399 }
 400
 401 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 402                            struct ins_operands *ops)
 403 {
 404         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 405                          ops->source.name ?: ops->source.raw,
 406                          ops->target.name ?: ops->target.raw);
 407 }
 408
 409 static struct ins_ops mov_ops = {
 410         .parse     = mov__parse,
 411         .scnprintf = mov__scnprintf,
 412 };
 413
 414 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 415 {
 416         char *target, *comment, *s, prev;
 417
 418         target = s = ops->raw;
 419
 420         while (s[0] != '\0' && !isspace(s[0]))
 421                 ++s;
 422         prev = *s;
 423         *s = '\0';
 424
 425         ops->target.raw = strdup(target);
 426         *s = prev;
 427
 428         if (ops->target.raw == NULL)
 429                 return -1;
 430
 431         comment = strchr(s, arch->objdump.comment_char);
 432         if (comment == NULL)
 433                 return 0;
 434
 435         while (comment[0] != '\0' && isspace(comment[0]))
 436                 ++comment;
 437
 438         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 439
 440         return 0;
 441 }
 442
 443 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 444                            struct ins_operands *ops)
 445 {
 446         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 447                          ops->target.name ?: ops->target.raw);
 448 }
 449
 450 static struct ins_ops dec_ops = {
 451         .parse     = dec__parse,
 452         .scnprintf = dec__scnprintf,
 453 };
 454
 455 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 456                           struct ins_operands *ops __maybe_unused)
 457 {
 458         return scnprintf(bf, size, "%-6.6s", "nop");
 459 }
 460
 461 static struct ins_ops nop_ops = {
 462         .scnprintf = nop__scnprintf,
 463 };
 464
 465 static struct ins_ops ret_ops = {
 466         .scnprintf = ins__raw_scnprintf,
 467 };
 468
 469 bool ins__is_ret(const struct ins *ins)
 470 {
 471         return ins->ops == &ret_ops;
 472 }
 473
 474 static int ins__key_cmp(const void *name, const void *insp)
 475 {
 476         const struct ins *ins = insp;
 477
 478         return strcmp(name, ins->name);
 479 }
 480
 481 static int ins__cmp(const void *a, const void *b)
 482 {
 483         const struct ins *ia = a;
 484         const struct ins *ib = b;
 485
 486         return strcmp(ia->name, ib->name);
 487 }
 488
 489 static void ins__sort(struct arch *arch)
 490 {
 491         const int nmemb = arch->nr_instructions;
 492
 493         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
 494 }
 495
 496 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
 497 {
 498         struct ins *ins;
 499         const int nmemb = arch->nr_instructions;
 500
 501         if (!arch->sorted_instructions) {
 502                 ins__sort(arch);
 503                 arch->sorted_instructions = true;
 504         }
 505
 506         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
 507         return ins ? ins->ops : NULL;
 508 }
 509
 510 static struct ins_ops *ins__find(struct arch *arch, const char *name)
 511 {
 512         struct ins_ops *ops = __ins__find(arch, name);
 513
 514         if (!ops && arch->associate_instruction_ops)
 515                 ops = arch->associate_instruction_ops(arch, name);
 516
 517         return ops;
 518 }
 519
 520 static int arch__key_cmp(const void *name, const void *archp)
 521 {
 522         const struct arch *arch = archp;
 523
 524         return strcmp(name, arch->name);
 525 }
 526
 527 static int arch__cmp(const void *a, const void *b)
 528 {
 529         const struct arch *aa = a;
 530         const struct arch *ab = b;
 531
 532         return strcmp(aa->name, ab->name);
 533 }
 534
 535 static void arch__sort(void)
 536 {
 537         const int nmemb = ARRAY_SIZE(architectures);
 538
 539         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
 540 }
 541
 542 static struct arch *arch__find(const char *name)
 543 {
 544         const int nmemb = ARRAY_SIZE(architectures);
 545         static bool sorted;
 546
 547         if (!sorted) {
 548                 arch__sort();
 549                 sorted = true;
 550         }
 551
 552         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
 553 }
 554
 555 int symbol__alloc_hist(struct symbol *sym)
 556 {
 557         struct annotation *notes = symbol__annotation(sym);
 558         const size_t size = symbol__size(sym);
 559         size_t sizeof_sym_hist;
 560
 561         /* Check for overflow when calculating sizeof_sym_hist */
 562         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 563                 return -1;
 564
 565         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 566
 567         /* Check for overflow in zalloc argument */
 568         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 569                                 / symbol_conf.nr_events)
 570                 return -1;
 571
 572         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 573         if (notes->src == NULL)
 574                 return -1;
 575         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 576         notes->src->nr_histograms   = symbol_conf.nr_events;
 577         INIT_LIST_HEAD(&notes->src->source);
 578         return 0;
 579 }
 580
 581 /* The cycles histogram is lazily allocated. */
 582 static int symbol__alloc_hist_cycles(struct symbol *sym)
 583 {
 584         struct annotation *notes = symbol__annotation(sym);
 585         const size_t size = symbol__size(sym);
 586
 587         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
 588         if (notes->src->cycles_hist == NULL)
 589                 return -1;
 590         return 0;
 591 }
 592
 593 void symbol__annotate_zero_histograms(struct symbol *sym)
 594 {
 595         struct annotation *notes = symbol__annotation(sym);
 596
 597         pthread_mutex_lock(&notes->lock);
 598         if (notes->src != NULL) {
 599                 memset(notes->src->histograms, 0,
 600                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 601                 if (notes->src->cycles_hist)
 602                         memset(notes->src->cycles_hist, 0,
 603                                 symbol__size(sym) * sizeof(struct cyc_hist));
 604         }
 605         pthread_mutex_unlock(&notes->lock);
 606 }
 607
 608 static int __symbol__account_cycles(struct annotation *notes,
 609                                     u64 start,
 610                                     unsigned offset, unsigned cycles,
 611                                     unsigned have_start)
 612 {
 613         struct cyc_hist *ch;
 614
 615         ch = notes->src->cycles_hist;
 616         /*
 617          * For now we can only account one basic block per
 618          * final jump. But multiple could be overlapping.
 619          * Always account the longest one. So when
 620          * a shorter one has been already seen throw it away.
 621          *
 622          * We separately always account the full cycles.
 623          */
 624         ch[offset].num_aggr++;
 625         ch[offset].cycles_aggr += cycles;
 626
 627         if (!have_start && ch[offset].have_start)
 628                 return 0;
 629         if (ch[offset].num) {
 630                 if (have_start && (!ch[offset].have_start ||
 631                                    ch[offset].start > start)) {
 632                         ch[offset].have_start = 0;
 633                         ch[offset].cycles = 0;
 634                         ch[offset].num = 0;
 635                         if (ch[offset].reset < 0xffff)
 636                                 ch[offset].reset++;
 637                 } else if (have_start &&
 638                            ch[offset].start < start)
 639                         return 0;
 640         }
 641         ch[offset].have_start = have_start;
 642         ch[offset].start = start;
 643         ch[offset].cycles += cycles;
 644         ch[offset].num++;
 645         return 0;
 646 }
 647
 648 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 649                                       struct annotation *notes, int evidx, u64 addr)
 650 {
 651         unsigned offset;
 652         struct sym_hist *h;
 653
 654         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 655
 656         if ((addr < sym->start || addr >= sym->end) &&
 657             (addr != sym->end || sym->start != sym->end)) {
 658                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 659                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 660                 return -ERANGE;
 661         }
 662
 663         offset = addr - sym->start;
 664         h = annotation__histogram(notes, evidx);
 665         h->sum++;
 666         h->addr[offset]++;
 667
 668         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 669                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 670                   addr, addr - sym->start, evidx, h->addr[offset]);
 671         return 0;
 672 }
 673
 674 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
 675 {
 676         struct annotation *notes = symbol__annotation(sym);
 677
 678         if (notes->src == NULL) {
 679                 if (symbol__alloc_hist(sym) < 0)
 680                         return NULL;
 681         }
 682         if (!notes->src->cycles_hist && cycles) {
 683                 if (symbol__alloc_hist_cycles(sym) < 0)
 684                         return NULL;
 685         }
 686         return notes;
 687 }
 688
 689 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 690                                     int evidx, u64 addr)
 691 {
 692         struct annotation *notes;
 693
 694         if (sym == NULL)
 695                 return 0;
 696         notes = symbol__get_annotation(sym, false);
 697         if (notes == NULL)
 698                 return -ENOMEM;
 699         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 700 }
 701
 702 static int symbol__account_cycles(u64 addr, u64 start,
 703                                   struct symbol *sym, unsigned cycles)
 704 {
 705         struct annotation *notes;
 706         unsigned offset;
 707
 708         if (sym == NULL)
 709                 return 0;
 710         notes = symbol__get_annotation(sym, true);
 711         if (notes == NULL)
 712                 return -ENOMEM;
 713         if (addr < sym->start || addr >= sym->end)
 714                 return -ERANGE;
 715
 716         if (start) {
 717                 if (start < sym->start || start >= sym->end)
 718                         return -ERANGE;
 719                 if (start >= addr)
 720                         start = 0;
 721         }
 722         offset = addr - sym->start;
 723         return __symbol__account_cycles(notes,
 724                                         start ? start - sym->start : 0,
 725                                         offset, cycles,
 726                                         !!start);
 727 }
 728
 729 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 730                                     struct addr_map_symbol *start,
 731                                     unsigned cycles)
 732 {
 733         u64 saddr = 0;
 734         int err;
 735
 736         if (!cycles)
 737                 return 0;
 738
 739         /*
 740          * Only set start when IPC can be computed. We can only
 741          * compute it when the basic block is completely in a single
 742          * function.
 743          * Special case the case when the jump is elsewhere, but
 744          * it starts on the function start.
 745          */
 746         if (start &&
 747                 (start->sym == ams->sym ||
 748                  (ams->sym &&
 749                    start->addr == ams->sym->start + ams->map->start)))
 750                 saddr = start->al_addr;
 751         if (saddr == 0)
 752                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
 753                         ams->addr,
 754                         start ? start->addr : 0,
 755                         ams->sym ? ams->sym->start + ams->map->start : 0,
 756                         saddr);
 757         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
 758         if (err)
 759                 pr_debug2("account_cycles failed %d\n", err);
 760         return err;
 761 }
 762
 763 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 764 {
 765         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 766 }
 767
 768 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 769 {
 770         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 771 }
 772
 773 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
 774 {
 775         dl->ins.ops = ins__find(arch, dl->ins.name);
 776
 777         if (!dl->ins.ops)
 778                 return;
 779
 780         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0)
 781                 dl->ins.ops = NULL;
 782 }
 783
 784 static int disasm_line__parse(char *line, const char **namep, char **rawp)
 785 {
 786         char *name = line, tmp;
 787
 788         while (isspace(name[0]))
 789                 ++name;
 790
 791         if (name[0] == '\0')
 792                 return -1;
 793
 794         *rawp = name + 1;
 795
 796         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 797                 ++*rawp;
 798
 799         tmp = (*rawp)[0];
 800         (*rawp)[0] = '\0';
 801         *namep = strdup(name);
 802
 803         if (*namep == NULL)
 804                 goto out_free_name;
 805
 806         (*rawp)[0] = tmp;
 807
 808         if ((*rawp)[0] != '\0') {
 809                 (*rawp)++;
 810                 while (isspace((*rawp)[0]))
 811                         ++(*rawp);
 812         }
 813
 814         return 0;
 815
 816 out_free_name:
 817         free((void *)namep);
 818         *namep = NULL;
 819         return -1;
 820 }
 821
 822 static struct disasm_line *disasm_line__new(s64 offset, char *line,
 823                                             size_t privsize, int line_nr,
 824                                             struct arch *arch,
 825                                             struct map *map)
 826 {
 827         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 828
 829         if (dl != NULL) {
 830                 dl->offset = offset;
 831                 dl->line = strdup(line);
 832                 dl->line_nr = line_nr;
 833                 if (dl->line == NULL)
 834                         goto out_delete;
 835
 836                 if (offset != -1) {
 837                         if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0)
 838                                 goto out_free_line;
 839
 840                         disasm_line__init_ins(dl, arch, map);
 841                 }
 842         }
 843
 844         return dl;
 845
 846 out_free_line:
 847         zfree(&dl->line);
 848 out_delete:
 849         free(dl);
 850         return NULL;
 851 }
 852
 853 void disasm_line__free(struct disasm_line *dl)
 854 {
 855         zfree(&dl->line);
 856         if (dl->ins.ops && dl->ins.ops->free)
 857                 dl->ins.ops->free(&dl->ops);
 858         else
 859                 ins__delete(&dl->ops);
 860         free((void *)dl->ins.name);
 861         dl->ins.name = NULL;
 862         free(dl);
 863 }
 864
 865 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 866 {
 867         if (raw || !dl->ins.ops)
 868                 return scnprintf(bf, size, "%-6.6s %s", dl->ins.name, dl->ops.raw);
 869
 870         return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
 871 }
 872
 873 static void disasm__add(struct list_head *head, struct disasm_line *line)
 874 {
 875         list_add_tail(&line->node, head);
 876 }
 877
 878 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 879 {
 880         list_for_each_entry_continue(pos, head, node)
 881                 if (pos->offset >= 0)
 882                         return pos;
 883
 884         return NULL;
 885 }
 886
 887 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 888                             s64 end, const char **path, u64 *nr_samples)
 889 {
 890         struct source_line *src_line = notes->src->lines;
 891         double percent = 0.0;
 892         *nr_samples = 0;
 893
 894         if (src_line) {
 895                 size_t sizeof_src_line = sizeof(*src_line) +
 896                                 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
 897
 898                 while (offset < end) {
 899                         src_line = (void *)notes->src->lines +
 900                                         (sizeof_src_line * offset);
 901
 902                         if (*path == NULL)
 903                                 *path = src_line->path;
 904
 905                         percent += src_line->samples[evidx].percent;
 906                         *nr_samples += src_line->samples[evidx].nr;
 907                         offset++;
 908                 }
 909         } else {
 910                 struct sym_hist *h = annotation__histogram(notes, evidx);
 911                 unsigned int hits = 0;
 912
 913                 while (offset < end)
 914                         hits += h->addr[offset++];
 915
 916                 if (h->sum) {
 917                         *nr_samples = hits;
 918                         percent = 100.0 * hits / h->sum;
 919                 }
 920         }
 921
 922         return percent;
 923 }
 924
 925 static const char *annotate__address_color(struct block_range *br)
 926 {
 927         double cov = block_range__coverage(br);
 928
 929         if (cov >= 0) {
 930                 /* mark red for >75% coverage */
 931                 if (cov > 0.75)
 932                         return PERF_COLOR_RED;
 933
 934                 /* mark dull for <1% coverage */
 935                 if (cov < 0.01)
 936                         return PERF_COLOR_NORMAL;
 937         }
 938
 939         return PERF_COLOR_MAGENTA;
 940 }
 941
 942 static const char *annotate__asm_color(struct block_range *br)
 943 {
 944         double cov = block_range__coverage(br);
 945
 946         if (cov >= 0) {
 947                 /* mark dull for <1% coverage */
 948                 if (cov < 0.01)
 949                         return PERF_COLOR_NORMAL;
 950         }
 951
 952         return PERF_COLOR_BLUE;
 953 }
 954
 955 static void annotate__branch_printf(struct block_range *br, u64 addr)
 956 {
 957         bool emit_comment = true;
 958
 959         if (!br)
 960                 return;
 961
 962 #if 1
 963         if (br->is_target && br->start == addr) {
 964                 struct block_range *branch = br;
 965                 double p;
 966
 967                 /*
 968                  * Find matching branch to our target.
 969                  */
 970                 while (!branch->is_branch)
 971                         branch = block_range__next(branch);
 972
 973                 p = 100 *(double)br->entry / branch->coverage;
 974
 975                 if (p > 0.1) {
 976                         if (emit_comment) {
 977                                 emit_comment = false;
 978                                 printf("\t#");
 979                         }
 980
 981                         /*
 982                          * The percentage of coverage joined at this target in relation
 983                          * to the next branch.
 984                          */
 985                         printf(" +%.2f%%", p);
 986                 }
 987         }
 988 #endif
 989         if (br->is_branch && br->end == addr) {
 990                 double p = 100*(double)br->taken / br->coverage;
 991
 992                 if (p > 0.1) {
 993                         if (emit_comment) {
 994                                 emit_comment = false;
 995                                 printf("\t#");
 996                         }
 997
 998                         /*
 999                          * The percentage of coverage leaving at this branch, and
1000                          * its prediction ratio.
1001                          */
1002                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
1003                 }
1004         }
1005 }
1006
1007
1008 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
1009                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
1010                       int max_lines, struct disasm_line *queue)
1011 {
1012         static const char *prev_line;
1013         static const char *prev_color;
1014
1015         if (dl->offset != -1) {
1016                 const char *path = NULL;
1017                 u64 nr_samples;
1018                 double percent, max_percent = 0.0;
1019                 double *ppercents = &percent;
1020                 u64 *psamples = &nr_samples;
1021                 int i, nr_percent = 1;
1022                 const char *color;
1023                 struct annotation *notes = symbol__annotation(sym);
1024                 s64 offset = dl->offset;
1025                 const u64 addr = start + offset;
1026                 struct disasm_line *next;
1027                 struct block_range *br;
1028
1029                 next = disasm__get_next_ip_line(&notes->src->source, dl);
1030
1031                 if (perf_evsel__is_group_event(evsel)) {
1032                         nr_percent = evsel->nr_members;
1033                         ppercents = calloc(nr_percent, sizeof(double));
1034                         psamples = calloc(nr_percent, sizeof(u64));
1035                         if (ppercents == NULL || psamples == NULL) {
1036                                 return -1;
1037                         }
1038                 }
1039
1040                 for (i = 0; i < nr_percent; i++) {
1041                         percent = disasm__calc_percent(notes,
1042                                         notes->src->lines ? i : evsel->idx + i,
1043                                         offset,
1044                                         next ? next->offset : (s64) len,
1045                                         &path, &nr_samples);
1046
1047                         ppercents[i] = percent;
1048                         psamples[i] = nr_samples;
1049                         if (percent > max_percent)
1050                                 max_percent = percent;
1051                 }
1052
1053                 if (max_percent < min_pcnt)
1054                         return -1;
1055
1056                 if (max_lines && printed >= max_lines)
1057                         return 1;
1058
1059                 if (queue != NULL) {
1060                         list_for_each_entry_from(queue, &notes->src->source, node) {
1061                                 if (queue == dl)
1062                                         break;
1063                                 disasm_line__print(queue, sym, start, evsel, len,
1064                                                     0, 0, 1, NULL);
1065                         }
1066                 }
1067
1068                 color = get_percent_color(max_percent);
1069
1070                 /*
1071                  * Also color the filename and line if needed, with
1072                  * the same color than the percentage. Don't print it
1073                  * twice for close colored addr with the same filename:line
1074                  */
1075                 if (path) {
1076                         if (!prev_line || strcmp(prev_line, path)
1077                                        || color != prev_color) {
1078                                 color_fprintf(stdout, color, " %s", path);
1079                                 prev_line = path;
1080                                 prev_color = color;
1081                         }
1082                 }
1083
1084                 for (i = 0; i < nr_percent; i++) {
1085                         percent = ppercents[i];
1086                         nr_samples = psamples[i];
1087                         color = get_percent_color(percent);
1088
1089                         if (symbol_conf.show_total_period)
1090                                 color_fprintf(stdout, color, " %7" PRIu64,
1091                                               nr_samples);
1092                         else
1093                                 color_fprintf(stdout, color, " %7.2f", percent);
1094                 }
1095
1096                 printf(" :      ");
1097
1098                 br = block_range__find(addr);
1099                 color_fprintf(stdout, annotate__address_color(br), "  %" PRIx64 ":", addr);
1100                 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line);
1101                 annotate__branch_printf(br, addr);
1102                 printf("\n");
1103
1104                 if (ppercents != &percent)
1105                         free(ppercents);
1106
1107                 if (psamples != &nr_samples)
1108                         free(psamples);
1109
1110         } else if (max_lines && printed >= max_lines)
1111                 return 1;
1112         else {
1113                 int width = 8;
1114
1115                 if (queue)
1116                         return -1;
1117
1118                 if (perf_evsel__is_group_event(evsel))
1119                         width *= evsel->nr_members;
1120
1121                 if (!*dl->line)
1122                         printf(" %*s:\n", width, " ");
1123                 else
1124                         printf(" %*s:   %s\n", width, " ", dl->line);
1125         }
1126
1127         return 0;
1128 }
1129
1130 /*
1131  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1132  * which looks like following
1133  *
1134  *  0000000000415500 <_init>:
1135  *    415500:       sub    $0x8,%rsp
1136  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1137  *    41550b:       test   %rax,%rax
1138  *    41550e:       je     415515 <_init+0x15>
1139  *    415510:       callq  416e70 <__gmon_start__@plt>
1140  *    415515:       add    $0x8,%rsp
1141  *    415519:       retq
1142  *
1143  * it will be parsed and saved into struct disasm_line as
1144  *  <offset>       <name>  <ops.raw>
1145  *
1146  * The offset will be a relative offset from the start of the symbol and -1
1147  * means that it's not a disassembly line so should be treated differently.
1148  * The ops.raw part will be parsed further according to type of the instruction.
1149  */
1150 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
1151                                       struct arch *arch,
1152                                       FILE *file, size_t privsize,
1153                                       int *line_nr)
1154 {
1155         struct annotation *notes = symbol__annotation(sym);
1156         struct disasm_line *dl;
1157         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
1158         size_t line_len;
1159         s64 line_ip, offset = -1;
1160         regmatch_t match[2];
1161
1162         if (getline(&line, &line_len, file) < 0)
1163                 return -1;
1164
1165         if (!line)
1166                 return -1;
1167
1168         while (line_len != 0 && isspace(line[line_len - 1]))
1169                 line[--line_len] = '\0';
1170
1171         c = strchr(line, '\n');
1172         if (c)
1173                 *c = 0;
1174
1175         line_ip = -1;
1176         parsed_line = line;
1177
1178         /* /filename:linenr ? Save line number and ignore. */
1179         if (regexec(&file_lineno, line, 2, match, 0) == 0) {
1180                 *line_nr = atoi(line + match[1].rm_so);
1181                 return 0;
1182         }
1183
1184         /*
1185          * Strip leading spaces:
1186          */
1187         tmp = line;
1188         while (*tmp) {
1189                 if (*tmp != ' ')
1190                         break;
1191                 tmp++;
1192         }
1193
1194         if (*tmp) {
1195                 /*
1196                  * Parse hexa addresses followed by ':'
1197                  */
1198                 line_ip = strtoull(tmp, &tmp2, 16);
1199                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1200                         line_ip = -1;
1201         }
1202
1203         if (line_ip != -1) {
1204                 u64 start = map__rip_2objdump(map, sym->start),
1205                     end = map__rip_2objdump(map, sym->end);
1206
1207                 offset = line_ip - start;
1208                 if ((u64)line_ip < start || (u64)line_ip >= end)
1209                         offset = -1;
1210                 else
1211                         parsed_line = tmp2 + 1;
1212         }
1213
1214         dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map);
1215         free(line);
1216         (*line_nr)++;
1217
1218         if (dl == NULL)
1219                 return -1;
1220
1221         if (!disasm_line__has_offset(dl)) {
1222                 dl->ops.target.offset = dl->ops.target.addr -
1223                                         map__rip_2objdump(map, sym->start);
1224                 dl->ops.target.offset_avail = true;
1225         }
1226
1227         /* kcore has no symbols, so add the call target name */
1228         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.name) {
1229                 struct addr_map_symbol target = {
1230                         .map = map,
1231                         .addr = dl->ops.target.addr,
1232                 };
1233
1234                 if (!map_groups__find_ams(&target) &&
1235                     target.sym->start == target.al_addr)
1236                         dl->ops.target.name = strdup(target.sym->name);
1237         }
1238
1239         disasm__add(&notes->src->source, dl);
1240
1241         return 0;
1242 }
1243
1244 static __attribute__((constructor)) void symbol__init_regexpr(void)
1245 {
1246         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1247 }
1248
1249 static void delete_last_nop(struct symbol *sym)
1250 {
1251         struct annotation *notes = symbol__annotation(sym);
1252         struct list_head *list = &notes->src->source;
1253         struct disasm_line *dl;
1254
1255         while (!list_empty(list)) {
1256                 dl = list_entry(list->prev, struct disasm_line, node);
1257
1258                 if (dl->ins.ops) {
1259                         if (dl->ins.ops != &nop_ops)
1260                                 return;
1261                 } else {
1262                         if (!strstr(dl->line, " nop ") &&
1263                             !strstr(dl->line, " nopl ") &&
1264                             !strstr(dl->line, " nopw "))
1265                                 return;
1266                 }
1267
1268                 list_del(&dl->node);
1269                 disasm_line__free(dl);
1270         }
1271 }
1272
1273 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
1274                               int errnum, char *buf, size_t buflen)
1275 {
1276         struct dso *dso = map->dso;
1277
1278         BUG_ON(buflen == 0);
1279
1280         if (errnum >= 0) {
1281                 str_error_r(errnum, buf, buflen);
1282                 return 0;
1283         }
1284
1285         switch (errnum) {
1286         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1287                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1288                 char *build_id_msg = NULL;
1289
1290                 if (dso->has_build_id) {
1291                         build_id__sprintf(dso->build_id,
1292                                           sizeof(dso->build_id), bf + 15);
1293                         build_id_msg = bf;
1294                 }
1295                 scnprintf(buf, buflen,
1296                           "No vmlinux file%s\nwas found in the path.\n\n"
1297                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1298                           "Please use:\n\n"
1299                           "  perf buildid-cache -vu vmlinux\n\n"
1300                           "or:\n\n"
1301                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1302         }
1303                 break;
1304         default:
1305                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1306                 break;
1307         }
1308
1309         return 0;
1310 }
1311
1312 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1313 {
1314         char linkname[PATH_MAX];
1315         char *build_id_filename;
1316         char *build_id_path = NULL;
1317
1318         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1319             !dso__is_kcore(dso))
1320                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1321
1322         build_id_filename = dso__build_id_filename(dso, NULL, 0);
1323         if (build_id_filename) {
1324                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1325                 free(build_id_filename);
1326         } else {
1327                 if (dso->has_build_id)
1328                         return ENOMEM;
1329                 goto fallback;
1330         }
1331
1332         build_id_path = strdup(filename);
1333         if (!build_id_path)
1334                 return -1;
1335
1336         dirname(build_id_path);
1337
1338         if (dso__is_kcore(dso) ||
1339             readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
1340             strstr(linkname, DSO__NAME_KALLSYMS) ||
1341             access(filename, R_OK)) {
1342 fallback:
1343                 /*
1344                  * If we don't have build-ids or the build-id file isn't in the
1345                  * cache, or is just a kallsyms file, well, lets hope that this
1346                  * DSO is the same as when 'perf record' ran.
1347                  */
1348                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1349         }
1350
1351         free(build_id_path);
1352         return 0;
1353 }
1354
1355 static const char *annotate__norm_arch(const char *arch_name)
1356 {
1357         struct utsname uts;
1358
1359         if (!arch_name) { /* Assume we are annotating locally. */
1360                 if (uname(&uts) < 0)
1361                         return NULL;
1362                 arch_name = uts.machine;
1363         }
1364         return normalize_arch((char *)arch_name);
1365 }
1366
1367 int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize)
1368 {
1369         struct dso *dso = map->dso;
1370         char command[PATH_MAX * 2];
1371         struct arch *arch = NULL;
1372         FILE *file;
1373         char symfs_filename[PATH_MAX];
1374         struct kcore_extract kce;
1375         bool delete_extract = false;
1376         int stdout_fd[2];
1377         int lineno = 0;
1378         int nline;
1379         pid_t pid;
1380         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1381
1382         if (err)
1383                 return err;
1384
1385         arch_name = annotate__norm_arch(arch_name);
1386         if (!arch_name)
1387                 return -1;
1388
1389         arch = arch__find(arch_name);
1390         if (arch == NULL)
1391                 return -ENOTSUP;
1392
1393         if (arch->init) {
1394                 err = arch->init(arch);
1395                 if (err) {
1396                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
1397                         return err;
1398                 }
1399         }
1400
1401         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1402                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1403                  map->unmap_ip(map, sym->end));
1404
1405         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1406                  dso, dso->long_name, sym, sym->name);
1407
1408         if (dso__is_kcore(dso)) {
1409                 kce.kcore_filename = symfs_filename;
1410                 kce.addr = map__rip_2objdump(map, sym->start);
1411                 kce.offs = sym->start;
1412                 kce.len = sym->end - sym->start;
1413                 if (!kcore_extract__create(&kce)) {
1414                         delete_extract = true;
1415                         strlcpy(symfs_filename, kce.extract_filename,
1416                                 sizeof(symfs_filename));
1417                 }
1418         } else if (dso__needs_decompress(dso)) {
1419                 char tmp[PATH_MAX];
1420                 struct kmod_path m;
1421                 int fd;
1422                 bool ret;
1423
1424                 if (kmod_path__parse_ext(&m, symfs_filename))
1425                         goto out;
1426
1427                 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1428
1429                 fd = mkstemp(tmp);
1430                 if (fd < 0) {
1431                         free(m.ext);
1432                         goto out;
1433                 }
1434
1435                 ret = decompress_to_file(m.ext, symfs_filename, fd);
1436
1437                 if (ret)
1438                         pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename);
1439
1440                 free(m.ext);
1441                 close(fd);
1442
1443                 if (!ret)
1444                         goto out;
1445
1446                 strcpy(symfs_filename, tmp);
1447         }
1448
1449         snprintf(command, sizeof(command),
1450                  "%s %s%s --start-address=0x%016" PRIx64
1451                  " --stop-address=0x%016" PRIx64
1452                  " -l -d %s %s -C %s 2>/dev/null|grep -v %s:|expand",
1453                  objdump_path ? objdump_path : "objdump",
1454                  disassembler_style ? "-M " : "",
1455                  disassembler_style ? disassembler_style : "",
1456                  map__rip_2objdump(map, sym->start),
1457                  map__rip_2objdump(map, sym->end),
1458                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1459                  symbol_conf.annotate_src ? "-S" : "",
1460                  symfs_filename, symfs_filename);
1461
1462         pr_debug("Executing: %s\n", command);
1463
1464         err = -1;
1465         if (pipe(stdout_fd) < 0) {
1466                 pr_err("Failure creating the pipe to run %s\n", command);
1467                 goto out_remove_tmp;
1468         }
1469
1470         pid = fork();
1471         if (pid < 0) {
1472                 pr_err("Failure forking to run %s\n", command);
1473                 goto out_close_stdout;
1474         }
1475
1476         if (pid == 0) {
1477                 close(stdout_fd[0]);
1478                 dup2(stdout_fd[1], 1);
1479                 close(stdout_fd[1]);
1480                 execl("/bin/sh", "sh", "-c", command, NULL);
1481                 perror(command);
1482                 exit(-1);
1483         }
1484
1485         close(stdout_fd[1]);
1486
1487         file = fdopen(stdout_fd[0], "r");
1488         if (!file) {
1489                 pr_err("Failure creating FILE stream for %s\n", command);
1490                 /*
1491                  * If we were using debug info should retry with
1492                  * original binary.
1493                  */
1494                 goto out_remove_tmp;
1495         }
1496
1497         nline = 0;
1498         while (!feof(file)) {
1499                 /*
1500                  * The source code line number (lineno) needs to be kept in
1501                  * accross calls to symbol__parse_objdump_line(), so that it
1502                  * can associate it with the instructions till the next one.
1503                  * See disasm_line__new() and struct disasm_line::line_nr.
1504                  */
1505                 if (symbol__parse_objdump_line(sym, map, arch, file, privsize,
1506                             &lineno) < 0)
1507                         break;
1508                 nline++;
1509         }
1510
1511         if (nline == 0)
1512                 pr_err("No output from %s\n", command);
1513
1514         /*
1515          * kallsyms does not have symbol sizes so there may a nop at the end.
1516          * Remove it.
1517          */
1518         if (dso__is_kcore(dso))
1519                 delete_last_nop(sym);
1520
1521         fclose(file);
1522         err = 0;
1523 out_remove_tmp:
1524         close(stdout_fd[0]);
1525
1526         if (dso__needs_decompress(dso))
1527                 unlink(symfs_filename);
1528
1529         if (delete_extract)
1530                 kcore_extract__delete(&kce);
1531 out:
1532         return err;
1533
1534 out_close_stdout:
1535         close(stdout_fd[1]);
1536         goto out_remove_tmp;
1537 }
1538
1539 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1540 {
1541         struct source_line *iter;
1542         struct rb_node **p = &root->rb_node;
1543         struct rb_node *parent = NULL;
1544         int i, ret;
1545
1546         while (*p != NULL) {
1547                 parent = *p;
1548                 iter = rb_entry(parent, struct source_line, node);
1549
1550                 ret = strcmp(iter->path, src_line->path);
1551                 if (ret == 0) {
1552                         for (i = 0; i < src_line->nr_pcnt; i++)
1553                                 iter->samples[i].percent_sum += src_line->samples[i].percent;
1554                         return;
1555                 }
1556
1557                 if (ret < 0)
1558                         p = &(*p)->rb_left;
1559                 else
1560                         p = &(*p)->rb_right;
1561         }
1562
1563         for (i = 0; i < src_line->nr_pcnt; i++)
1564                 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1565
1566         rb_link_node(&src_line->node, parent, p);
1567         rb_insert_color(&src_line->node, root);
1568 }
1569
1570 static int cmp_source_line(struct source_line *a, struct source_line *b)
1571 {
1572         int i;
1573
1574         for (i = 0; i < a->nr_pcnt; i++) {
1575                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1576                         continue;
1577                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1578         }
1579
1580         return 0;
1581 }
1582
1583 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1584 {
1585         struct source_line *iter;
1586         struct rb_node **p = &root->rb_node;
1587         struct rb_node *parent = NULL;
1588
1589         while (*p != NULL) {
1590                 parent = *p;
1591                 iter = rb_entry(parent, struct source_line, node);
1592
1593                 if (cmp_source_line(src_line, iter))
1594                         p = &(*p)->rb_left;
1595                 else
1596                         p = &(*p)->rb_right;
1597         }
1598
1599         rb_link_node(&src_line->node, parent, p);
1600         rb_insert_color(&src_line->node, root);
1601 }
1602
1603 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1604 {
1605         struct source_line *src_line;
1606         struct rb_node *node;
1607
1608         node = rb_first(src_root);
1609         while (node) {
1610                 struct rb_node *next;
1611
1612                 src_line = rb_entry(node, struct source_line, node);
1613                 next = rb_next(node);
1614                 rb_erase(node, src_root);
1615
1616                 __resort_source_line(dest_root, src_line);
1617                 node = next;
1618         }
1619 }
1620
1621 static void symbol__free_source_line(struct symbol *sym, int len)
1622 {
1623         struct annotation *notes = symbol__annotation(sym);
1624         struct source_line *src_line = notes->src->lines;
1625         size_t sizeof_src_line;
1626         int i;
1627
1628         sizeof_src_line = sizeof(*src_line) +
1629                           (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1630
1631         for (i = 0; i < len; i++) {
1632                 free_srcline(src_line->path);
1633                 src_line = (void *)src_line + sizeof_src_line;
1634         }
1635
1636         zfree(&notes->src->lines);
1637 }
1638
1639 /* Get the filename:line for the colored entries */
1640 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1641                                    struct perf_evsel *evsel,
1642                                    struct rb_root *root, int len)
1643 {
1644         u64 start;
1645         int i, k;
1646         int evidx = evsel->idx;
1647         struct source_line *src_line;
1648         struct annotation *notes = symbol__annotation(sym);
1649         struct sym_hist *h = annotation__histogram(notes, evidx);
1650         struct rb_root tmp_root = RB_ROOT;
1651         int nr_pcnt = 1;
1652         u64 h_sum = h->sum;
1653         size_t sizeof_src_line = sizeof(struct source_line);
1654
1655         if (perf_evsel__is_group_event(evsel)) {
1656                 for (i = 1; i < evsel->nr_members; i++) {
1657                         h = annotation__histogram(notes, evidx + i);
1658                         h_sum += h->sum;
1659                 }
1660                 nr_pcnt = evsel->nr_members;
1661                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1662         }
1663
1664         if (!h_sum)
1665                 return 0;
1666
1667         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1668         if (!notes->src->lines)
1669                 return -1;
1670
1671         start = map__rip_2objdump(map, sym->start);
1672
1673         for (i = 0; i < len; i++) {
1674                 u64 offset, nr_samples;
1675                 double percent_max = 0.0;
1676
1677                 src_line->nr_pcnt = nr_pcnt;
1678
1679                 for (k = 0; k < nr_pcnt; k++) {
1680                         double percent = 0.0;
1681
1682                         h = annotation__histogram(notes, evidx + k);
1683                         nr_samples = h->addr[i];
1684                         if (h->sum)
1685                                 percent = 100.0 * nr_samples / h->sum;
1686
1687                         if (percent > percent_max)
1688                                 percent_max = percent;
1689                         src_line->samples[k].percent = percent;
1690                         src_line->samples[k].nr = nr_samples;
1691                 }
1692
1693                 if (percent_max <= 0.5)
1694                         goto next;
1695
1696                 offset = start + i;
1697                 src_line->path = get_srcline(map->dso, offset, NULL,
1698                                              false, true);
1699                 insert_source_line(&tmp_root, src_line);
1700
1701         next:
1702                 src_line = (void *)src_line + sizeof_src_line;
1703         }
1704
1705         resort_source_line(root, &tmp_root);
1706         return 0;
1707 }
1708
1709 static void print_summary(struct rb_root *root, const char *filename)
1710 {
1711         struct source_line *src_line;
1712         struct rb_node *node;
1713
1714         printf("\nSorted summary for file %s\n", filename);
1715         printf("----------------------------------------------\n\n");
1716
1717         if (RB_EMPTY_ROOT(root)) {
1718                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1719                 return;
1720         }
1721
1722         node = rb_first(root);
1723         while (node) {
1724                 double percent, percent_max = 0.0;
1725                 const char *color;
1726                 char *path;
1727                 int i;
1728
1729                 src_line = rb_entry(node, struct source_line, node);
1730                 for (i = 0; i < src_line->nr_pcnt; i++) {
1731                         percent = src_line->samples[i].percent_sum;
1732                         color = get_percent_color(percent);
1733                         color_fprintf(stdout, color, " %7.2f", percent);
1734
1735                         if (percent > percent_max)
1736                                 percent_max = percent;
1737                 }
1738
1739                 path = src_line->path;
1740                 color = get_percent_color(percent_max);
1741                 color_fprintf(stdout, color, " %s\n", path);
1742
1743                 node = rb_next(node);
1744         }
1745 }
1746
1747 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1748 {
1749         struct annotation *notes = symbol__annotation(sym);
1750         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1751         u64 len = symbol__size(sym), offset;
1752
1753         for (offset = 0; offset < len; ++offset)
1754                 if (h->addr[offset] != 0)
1755                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1756                                sym->start + offset, h->addr[offset]);
1757         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1758 }
1759
1760 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1761                             struct perf_evsel *evsel, bool full_paths,
1762                             int min_pcnt, int max_lines, int context)
1763 {
1764         struct dso *dso = map->dso;
1765         char *filename;
1766         const char *d_filename;
1767         const char *evsel_name = perf_evsel__name(evsel);
1768         struct annotation *notes = symbol__annotation(sym);
1769         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1770         struct disasm_line *pos, *queue = NULL;
1771         u64 start = map__rip_2objdump(map, sym->start);
1772         int printed = 2, queue_len = 0;
1773         int more = 0;
1774         u64 len;
1775         int width = 8;
1776         int graph_dotted_len;
1777
1778         filename = strdup(dso->long_name);
1779         if (!filename)
1780                 return -ENOMEM;
1781
1782         if (full_paths)
1783                 d_filename = filename;
1784         else
1785                 d_filename = basename(filename);
1786
1787         len = symbol__size(sym);
1788
1789         if (perf_evsel__is_group_event(evsel))
1790                 width *= evsel->nr_members;
1791
1792         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
1793                width, width, "Percent", d_filename, evsel_name, h->sum);
1794
1795         printf("%-*.*s----\n",
1796                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1797
1798         if (verbose > 0)
1799                 symbol__annotate_hits(sym, evsel);
1800
1801         list_for_each_entry(pos, &notes->src->source, node) {
1802                 if (context && queue == NULL) {
1803                         queue = pos;
1804                         queue_len = 0;
1805                 }
1806
1807                 switch (disasm_line__print(pos, sym, start, evsel, len,
1808                                             min_pcnt, printed, max_lines,
1809                                             queue)) {
1810                 case 0:
1811                         ++printed;
1812                         if (context) {
1813                                 printed += queue_len;
1814                                 queue = NULL;
1815                                 queue_len = 0;
1816                         }
1817                         break;
1818                 case 1:
1819                         /* filtered by max_lines */
1820                         ++more;
1821                         break;
1822                 case -1:
1823                 default:
1824                         /*
1825                          * Filtered by min_pcnt or non IP lines when
1826                          * context != 0
1827                          */
1828                         if (!context)
1829                                 break;
1830                         if (queue_len == context)
1831                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1832                         else
1833                                 ++queue_len;
1834                         break;
1835                 }
1836         }
1837
1838         free(filename);
1839
1840         return more;
1841 }
1842
1843 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1844 {
1845         struct annotation *notes = symbol__annotation(sym);
1846         struct sym_hist *h = annotation__histogram(notes, evidx);
1847
1848         memset(h, 0, notes->src->sizeof_sym_hist);
1849 }
1850
1851 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1852 {
1853         struct annotation *notes = symbol__annotation(sym);
1854         struct sym_hist *h = annotation__histogram(notes, evidx);
1855         int len = symbol__size(sym), offset;
1856
1857         h->sum = 0;
1858         for (offset = 0; offset < len; ++offset) {
1859                 h->addr[offset] = h->addr[offset] * 7 / 8;
1860                 h->sum += h->addr[offset];
1861         }
1862 }
1863
1864 void disasm__purge(struct list_head *head)
1865 {
1866         struct disasm_line *pos, *n;
1867
1868         list_for_each_entry_safe(pos, n, head, node) {
1869                 list_del(&pos->node);
1870                 disasm_line__free(pos);
1871         }
1872 }
1873
1874 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1875 {
1876         size_t printed;
1877
1878         if (dl->offset == -1)
1879                 return fprintf(fp, "%s\n", dl->line);
1880
1881         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->ins.name);
1882
1883         if (dl->ops.raw[0] != '\0') {
1884                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1885                                    dl->ops.raw);
1886         }
1887
1888         return printed + fprintf(fp, "\n");
1889 }
1890
1891 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1892 {
1893         struct disasm_line *pos;
1894         size_t printed = 0;
1895
1896         list_for_each_entry(pos, head, node)
1897                 printed += disasm_line__fprintf(pos, fp);
1898
1899         return printed;
1900 }
1901
1902 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1903                          struct perf_evsel *evsel, bool print_lines,
1904                          bool full_paths, int min_pcnt, int max_lines)
1905 {
1906         struct dso *dso = map->dso;
1907         struct rb_root source_line = RB_ROOT;
1908         u64 len;
1909
1910         if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0)
1911                 return -1;
1912
1913         len = symbol__size(sym);
1914
1915         if (print_lines) {
1916                 srcline_full_filename = full_paths;
1917                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1918                 print_summary(&source_line, dso->long_name);
1919         }
1920
1921         symbol__annotate_printf(sym, map, evsel, full_paths,
1922                                 min_pcnt, max_lines, 0);
1923         if (print_lines)
1924                 symbol__free_source_line(sym, len);
1925
1926         disasm__purge(&symbol__annotation(sym)->src->source);
1927
1928         return 0;
1929 }
1930
1931 bool ui__has_annotation(void)
1932 {
1933         return use_browser == 1 && perf_hpp_list.sym;
1934 }