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 <errno.h>
  11 #include <inttypes.h>
  12 #include "util.h"
  13 #include "ui/ui.h"
  14 #include "sort.h"
  15 #include "build-id.h"
  16 #include "color.h"
  17 #include "cache.h"
  18 #include "symbol.h"
  19 #include "debug.h"
  20 #include "annotate.h"
  21 #include "evsel.h"
  22 #include "block-range.h"
  23 #include "string2.h"
  24 #include "arch/common.h"
  25 #include <regex.h>
  26 #include <pthread.h>
  27 #include <linux/bitops.h>
  28 #include <linux/kernel.h>
  29 #include <sys/utsname.h>
  30
  31 #include "sane_ctype.h"
  32
  33 const char      *disassembler_style;
  34 const char      *objdump_path;
  35 static regex_t   file_lineno;
  36
  37 static struct ins_ops *ins__find(struct arch *arch, const char *name);
  38 static void ins__sort(struct arch *arch);
  39 static int disasm_line__parse(char *line, const char **namep, char **rawp);
  40
  41 struct arch {
  42         const char      *name;
  43         struct ins      *instructions;
  44         size_t          nr_instructions;
  45         size_t          nr_instructions_allocated;
  46         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
  47         bool            sorted_instructions;
  48         bool            initialized;
  49         void            *priv;
  50         int             (*init)(struct arch *arch);
  51         struct          {
  52                 char comment_char;
  53                 char skip_functions_char;
  54         } objdump;
  55 };
  56
  57 static struct ins_ops call_ops;
  58 static struct ins_ops dec_ops;
  59 static struct ins_ops jump_ops;
  60 static struct ins_ops mov_ops;
  61 static struct ins_ops nop_ops;
  62 static struct ins_ops lock_ops;
  63 static struct ins_ops ret_ops;
  64
  65 static int arch__grow_instructions(struct arch *arch)
  66 {
  67         struct ins *new_instructions;
  68         size_t new_nr_allocated;
  69
  70         if (arch->nr_instructions_allocated == 0 && arch->instructions)
  71                 goto grow_from_non_allocated_table;
  72
  73         new_nr_allocated = arch->nr_instructions_allocated + 128;
  74         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
  75         if (new_instructions == NULL)
  76                 return -1;
  77
  78 out_update_instructions:
  79         arch->instructions = new_instructions;
  80         arch->nr_instructions_allocated = new_nr_allocated;
  81         return 0;
  82
  83 grow_from_non_allocated_table:
  84         new_nr_allocated = arch->nr_instructions + 128;
  85         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
  86         if (new_instructions == NULL)
  87                 return -1;
  88
  89         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
  90         goto out_update_instructions;
  91 }
  92
  93 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
  94 {
  95         struct ins *ins;
  96
  97         if (arch->nr_instructions == arch->nr_instructions_allocated &&
  98             arch__grow_instructions(arch))
  99                 return -1;
 100
 101         ins = &arch->instructions[arch->nr_instructions];
 102         ins->name = strdup(name);
 103         if (!ins->name)
 104                 return -1;
 105
 106         ins->ops  = ops;
 107         arch->nr_instructions++;
 108
 109         ins__sort(arch);
 110         return 0;
 111 }
 112
 113 #include "arch/arm/annotate/instructions.c"
 114 #include "arch/arm64/annotate/instructions.c"
 115 #include "arch/x86/annotate/instructions.c"
 116 #include "arch/powerpc/annotate/instructions.c"
 117 #include "arch/s390/annotate/instructions.c"
 118
 119 static struct arch architectures[] = {
 120         {
 121                 .name = "arm",
 122                 .init = arm__annotate_init,
 123         },
 124         {
 125                 .name = "arm64",
 126                 .init = arm64__annotate_init,
 127         },
 128         {
 129                 .name = "x86",
 130                 .instructions = x86__instructions,
 131                 .nr_instructions = ARRAY_SIZE(x86__instructions),
 132                 .objdump =  {
 133                         .comment_char = '#',
 134                 },
 135         },
 136         {
 137                 .name = "powerpc",
 138                 .init = powerpc__annotate_init,
 139         },
 140         {
 141                 .name = "s390",
 142                 .init = s390__annotate_init,
 143                 .objdump =  {
 144                         .comment_char = '#',
 145                 },
 146         },
 147 };
 148
 149 static void ins__delete(struct ins_operands *ops)
 150 {
 151         if (ops == NULL)
 152                 return;
 153         zfree(&ops->source.raw);
 154         zfree(&ops->source.name);
 155         zfree(&ops->target.raw);
 156         zfree(&ops->target.name);
 157 }
 158
 159 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
 160                               struct ins_operands *ops)
 161 {
 162         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
 163 }
 164
 165 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
 166                   struct ins_operands *ops)
 167 {
 168         if (ins->ops->scnprintf)
 169                 return ins->ops->scnprintf(ins, bf, size, ops);
 170
 171         return ins__raw_scnprintf(ins, bf, size, ops);
 172 }
 173
 174 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 175 {
 176         char *endptr, *tok, *name;
 177
 178         ops->target.addr = strtoull(ops->raw, &endptr, 16);
 179
 180         name = strchr(endptr, '<');
 181         if (name == NULL)
 182                 goto indirect_call;
 183
 184         name++;
 185
 186         if (arch->objdump.skip_functions_char &&
 187             strchr(name, arch->objdump.skip_functions_char))
 188                 return -1;
 189
 190         tok = strchr(name, '>');
 191         if (tok == NULL)
 192                 return -1;
 193
 194         *tok = '\0';
 195         ops->target.name = strdup(name);
 196         *tok = '>';
 197
 198         return ops->target.name == NULL ? -1 : 0;
 199
 200 indirect_call:
 201         tok = strchr(endptr, '*');
 202         if (tok == NULL) {
 203                 struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
 204                 if (sym != NULL)
 205                         ops->target.name = strdup(sym->name);
 206                 else
 207                         ops->target.addr = 0;
 208                 return 0;
 209         }
 210
 211         ops->target.addr = strtoull(tok + 1, NULL, 16);
 212         return 0;
 213 }
 214
 215 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
 216                            struct ins_operands *ops)
 217 {
 218         if (ops->target.name)
 219                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
 220
 221         if (ops->target.addr == 0)
 222                 return ins__raw_scnprintf(ins, bf, size, ops);
 223
 224         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
 225 }
 226
 227 static struct ins_ops call_ops = {
 228         .parse     = call__parse,
 229         .scnprintf = call__scnprintf,
 230 };
 231
 232 bool ins__is_call(const struct ins *ins)
 233 {
 234         return ins->ops == &call_ops;
 235 }
 236
 237 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 238 {
 239         const char *s = strchr(ops->raw, '+');
 240         const char *c = strchr(ops->raw, ',');
 241
 242         /*
 243          * skip over possible up to 2 operands to get to address, e.g.:
 244          * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
 245          */
 246         if (c++ != NULL) {
 247                 ops->target.addr = strtoull(c, NULL, 16);
 248                 if (!ops->target.addr) {
 249                         c = strchr(c, ',');
 250                         if (c++ != NULL)
 251                                 ops->target.addr = strtoull(c, NULL, 16);
 252                 }
 253         } else {
 254                 ops->target.addr = strtoull(ops->raw, NULL, 16);
 255         }
 256
 257         if (s++ != NULL) {
 258                 ops->target.offset = strtoull(s, NULL, 16);
 259                 ops->target.offset_avail = true;
 260         } else {
 261                 ops->target.offset_avail = false;
 262         }
 263
 264         return 0;
 265 }
 266
 267 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 268                            struct ins_operands *ops)
 269 {
 270         const char *c = strchr(ops->raw, ',');
 271
 272         if (!ops->target.addr || ops->target.offset < 0)
 273                 return ins__raw_scnprintf(ins, bf, size, ops);
 274
 275         if (c != NULL) {
 276                 const char *c2 = strchr(c + 1, ',');
 277
 278                 /* check for 3-op insn */
 279                 if (c2 != NULL)
 280                         c = c2;
 281                 c++;
 282
 283                 /* mirror arch objdump's space-after-comma style */
 284                 if (*c == ' ')
 285                         c++;
 286         }
 287
 288         return scnprintf(bf, size, "%-6.6s %.*s%" PRIx64,
 289                          ins->name, c ? c - ops->raw : 0, ops->raw,
 290                          ops->target.offset);
 291 }
 292
 293 static struct ins_ops jump_ops = {
 294         .parse     = jump__parse,
 295         .scnprintf = jump__scnprintf,
 296 };
 297
 298 bool ins__is_jump(const struct ins *ins)
 299 {
 300         return ins->ops == &jump_ops;
 301 }
 302
 303 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 304 {
 305         char *endptr, *name, *t;
 306
 307         if (strstr(raw, "(%rip)") == NULL)
 308                 return 0;
 309
 310         *addrp = strtoull(comment, &endptr, 16);
 311         name = strchr(endptr, '<');
 312         if (name == NULL)
 313                 return -1;
 314
 315         name++;
 316
 317         t = strchr(name, '>');
 318         if (t == NULL)
 319                 return 0;
 320
 321         *t = '\0';
 322         *namep = strdup(name);
 323         *t = '>';
 324
 325         return 0;
 326 }
 327
 328 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
 329 {
 330         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 331         if (ops->locked.ops == NULL)
 332                 return 0;
 333
 334         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
 335                 goto out_free_ops;
 336
 337         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
 338
 339         if (ops->locked.ins.ops == NULL)
 340                 goto out_free_ops;
 341
 342         if (ops->locked.ins.ops->parse &&
 343             ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 0)
 344                 goto out_free_ops;
 345
 346         return 0;
 347
 348 out_free_ops:
 349         zfree(&ops->locked.ops);
 350         return 0;
 351 }
 352
 353 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 354                            struct ins_operands *ops)
 355 {
 356         int printed;
 357
 358         if (ops->locked.ins.ops == NULL)
 359                 return ins__raw_scnprintf(ins, bf, size, ops);
 360
 361         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 362         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
 363                                         size - printed, ops->locked.ops);
 364 }
 365
 366 static void lock__delete(struct ins_operands *ops)
 367 {
 368         struct ins *ins = &ops->locked.ins;
 369
 370         if (ins->ops && ins->ops->free)
 371                 ins->ops->free(ops->locked.ops);
 372         else
 373                 ins__delete(ops->locked.ops);
 374
 375         zfree(&ops->locked.ops);
 376         zfree(&ops->target.raw);
 377         zfree(&ops->target.name);
 378 }
 379
 380 static struct ins_ops lock_ops = {
 381         .free      = lock__delete,
 382         .parse     = lock__parse,
 383         .scnprintf = lock__scnprintf,
 384 };
 385
 386 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused)
 387 {
 388         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 389
 390         if (s == NULL)
 391                 return -1;
 392
 393         *s = '\0';
 394         ops->source.raw = strdup(ops->raw);
 395         *s = ',';
 396
 397         if (ops->source.raw == NULL)
 398                 return -1;
 399
 400         target = ++s;
 401         comment = strchr(s, arch->objdump.comment_char);
 402
 403         if (comment != NULL)
 404                 s = comment - 1;
 405         else
 406                 s = strchr(s, '\0') - 1;
 407
 408         while (s > target && isspace(s[0]))
 409                 --s;
 410         s++;
 411         prev = *s;
 412         *s = '\0';
 413
 414         ops->target.raw = strdup(target);
 415         *s = prev;
 416
 417         if (ops->target.raw == NULL)
 418                 goto out_free_source;
 419
 420         if (comment == NULL)
 421                 return 0;
 422
 423         comment = ltrim(comment);
 424         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 425         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 426
 427         return 0;
 428
 429 out_free_source:
 430         zfree(&ops->source.raw);
 431         return -1;
 432 }
 433
 434 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 435                            struct ins_operands *ops)
 436 {
 437         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 438                          ops->source.name ?: ops->source.raw,
 439                          ops->target.name ?: ops->target.raw);
 440 }
 441
 442 static struct ins_ops mov_ops = {
 443         .parse     = mov__parse,
 444         .scnprintf = mov__scnprintf,
 445 };
 446
 447 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 448 {
 449         char *target, *comment, *s, prev;
 450
 451         target = s = ops->raw;
 452
 453         while (s[0] != '\0' && !isspace(s[0]))
 454                 ++s;
 455         prev = *s;
 456         *s = '\0';
 457
 458         ops->target.raw = strdup(target);
 459         *s = prev;
 460
 461         if (ops->target.raw == NULL)
 462                 return -1;
 463
 464         comment = strchr(s, arch->objdump.comment_char);
 465         if (comment == NULL)
 466                 return 0;
 467
 468         comment = ltrim(comment);
 469         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 470
 471         return 0;
 472 }
 473
 474 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 475                            struct ins_operands *ops)
 476 {
 477         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 478                          ops->target.name ?: ops->target.raw);
 479 }
 480
 481 static struct ins_ops dec_ops = {
 482         .parse     = dec__parse,
 483         .scnprintf = dec__scnprintf,
 484 };
 485
 486 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 487                           struct ins_operands *ops __maybe_unused)
 488 {
 489         return scnprintf(bf, size, "%-6.6s", "nop");
 490 }
 491
 492 static struct ins_ops nop_ops = {
 493         .scnprintf = nop__scnprintf,
 494 };
 495
 496 static struct ins_ops ret_ops = {
 497         .scnprintf = ins__raw_scnprintf,
 498 };
 499
 500 bool ins__is_ret(const struct ins *ins)
 501 {
 502         return ins->ops == &ret_ops;
 503 }
 504
 505 static int ins__key_cmp(const void *name, const void *insp)
 506 {
 507         const struct ins *ins = insp;
 508
 509         return strcmp(name, ins->name);
 510 }
 511
 512 static int ins__cmp(const void *a, const void *b)
 513 {
 514         const struct ins *ia = a;
 515         const struct ins *ib = b;
 516
 517         return strcmp(ia->name, ib->name);
 518 }
 519
 520 static void ins__sort(struct arch *arch)
 521 {
 522         const int nmemb = arch->nr_instructions;
 523
 524         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
 525 }
 526
 527 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
 528 {
 529         struct ins *ins;
 530         const int nmemb = arch->nr_instructions;
 531
 532         if (!arch->sorted_instructions) {
 533                 ins__sort(arch);
 534                 arch->sorted_instructions = true;
 535         }
 536
 537         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
 538         return ins ? ins->ops : NULL;
 539 }
 540
 541 static struct ins_ops *ins__find(struct arch *arch, const char *name)
 542 {
 543         struct ins_ops *ops = __ins__find(arch, name);
 544
 545         if (!ops && arch->associate_instruction_ops)
 546                 ops = arch->associate_instruction_ops(arch, name);
 547
 548         return ops;
 549 }
 550
 551 static int arch__key_cmp(const void *name, const void *archp)
 552 {
 553         const struct arch *arch = archp;
 554
 555         return strcmp(name, arch->name);
 556 }
 557
 558 static int arch__cmp(const void *a, const void *b)
 559 {
 560         const struct arch *aa = a;
 561         const struct arch *ab = b;
 562
 563         return strcmp(aa->name, ab->name);
 564 }
 565
 566 static void arch__sort(void)
 567 {
 568         const int nmemb = ARRAY_SIZE(architectures);
 569
 570         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
 571 }
 572
 573 static struct arch *arch__find(const char *name)
 574 {
 575         const int nmemb = ARRAY_SIZE(architectures);
 576         static bool sorted;
 577
 578         if (!sorted) {
 579                 arch__sort();
 580                 sorted = true;
 581         }
 582
 583         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
 584 }
 585
 586 int symbol__alloc_hist(struct symbol *sym)
 587 {
 588         struct annotation *notes = symbol__annotation(sym);
 589         const size_t size = symbol__size(sym);
 590         size_t sizeof_sym_hist;
 591
 592         /* Check for overflow when calculating sizeof_sym_hist */
 593         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 594                 return -1;
 595
 596         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 597
 598         /* Check for overflow in zalloc argument */
 599         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 600                                 / symbol_conf.nr_events)
 601                 return -1;
 602
 603         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 604         if (notes->src == NULL)
 605                 return -1;
 606         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 607         notes->src->nr_histograms   = symbol_conf.nr_events;
 608         INIT_LIST_HEAD(&notes->src->source);
 609         return 0;
 610 }
 611
 612 /* The cycles histogram is lazily allocated. */
 613 static int symbol__alloc_hist_cycles(struct symbol *sym)
 614 {
 615         struct annotation *notes = symbol__annotation(sym);
 616         const size_t size = symbol__size(sym);
 617
 618         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
 619         if (notes->src->cycles_hist == NULL)
 620                 return -1;
 621         return 0;
 622 }
 623
 624 void symbol__annotate_zero_histograms(struct symbol *sym)
 625 {
 626         struct annotation *notes = symbol__annotation(sym);
 627
 628         pthread_mutex_lock(&notes->lock);
 629         if (notes->src != NULL) {
 630                 memset(notes->src->histograms, 0,
 631                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 632                 if (notes->src->cycles_hist)
 633                         memset(notes->src->cycles_hist, 0,
 634                                 symbol__size(sym) * sizeof(struct cyc_hist));
 635         }
 636         pthread_mutex_unlock(&notes->lock);
 637 }
 638
 639 static int __symbol__account_cycles(struct annotation *notes,
 640                                     u64 start,
 641                                     unsigned offset, unsigned cycles,
 642                                     unsigned have_start)
 643 {
 644         struct cyc_hist *ch;
 645
 646         ch = notes->src->cycles_hist;
 647         /*
 648          * For now we can only account one basic block per
 649          * final jump. But multiple could be overlapping.
 650          * Always account the longest one. So when
 651          * a shorter one has been already seen throw it away.
 652          *
 653          * We separately always account the full cycles.
 654          */
 655         ch[offset].num_aggr++;
 656         ch[offset].cycles_aggr += cycles;
 657
 658         if (!have_start && ch[offset].have_start)
 659                 return 0;
 660         if (ch[offset].num) {
 661                 if (have_start && (!ch[offset].have_start ||
 662                                    ch[offset].start > start)) {
 663                         ch[offset].have_start = 0;
 664                         ch[offset].cycles = 0;
 665                         ch[offset].num = 0;
 666                         if (ch[offset].reset < 0xffff)
 667                                 ch[offset].reset++;
 668                 } else if (have_start &&
 669                            ch[offset].start < start)
 670                         return 0;
 671         }
 672         ch[offset].have_start = have_start;
 673         ch[offset].start = start;
 674         ch[offset].cycles += cycles;
 675         ch[offset].num++;
 676         return 0;
 677 }
 678
 679 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 680                                       struct annotation *notes, int evidx, u64 addr)
 681 {
 682         unsigned offset;
 683         struct sym_hist *h;
 684
 685         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 686
 687         if ((addr < sym->start || addr >= sym->end) &&
 688             (addr != sym->end || sym->start != sym->end)) {
 689                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 690                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 691                 return -ERANGE;
 692         }
 693
 694         offset = addr - sym->start;
 695         h = annotation__histogram(notes, evidx);
 696         h->sum++;
 697         h->addr[offset]++;
 698
 699         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 700                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 701                   addr, addr - sym->start, evidx, h->addr[offset]);
 702         return 0;
 703 }
 704
 705 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
 706 {
 707         struct annotation *notes = symbol__annotation(sym);
 708
 709         if (notes->src == NULL) {
 710                 if (symbol__alloc_hist(sym) < 0)
 711                         return NULL;
 712         }
 713         if (!notes->src->cycles_hist && cycles) {
 714                 if (symbol__alloc_hist_cycles(sym) < 0)
 715                         return NULL;
 716         }
 717         return notes;
 718 }
 719
 720 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 721                                     int evidx, u64 addr)
 722 {
 723         struct annotation *notes;
 724
 725         if (sym == NULL)
 726                 return 0;
 727         notes = symbol__get_annotation(sym, false);
 728         if (notes == NULL)
 729                 return -ENOMEM;
 730         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 731 }
 732
 733 static int symbol__account_cycles(u64 addr, u64 start,
 734                                   struct symbol *sym, unsigned cycles)
 735 {
 736         struct annotation *notes;
 737         unsigned offset;
 738
 739         if (sym == NULL)
 740                 return 0;
 741         notes = symbol__get_annotation(sym, true);
 742         if (notes == NULL)
 743                 return -ENOMEM;
 744         if (addr < sym->start || addr >= sym->end)
 745                 return -ERANGE;
 746
 747         if (start) {
 748                 if (start < sym->start || start >= sym->end)
 749                         return -ERANGE;
 750                 if (start >= addr)
 751                         start = 0;
 752         }
 753         offset = addr - sym->start;
 754         return __symbol__account_cycles(notes,
 755                                         start ? start - sym->start : 0,
 756                                         offset, cycles,
 757                                         !!start);
 758 }
 759
 760 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 761                                     struct addr_map_symbol *start,
 762                                     unsigned cycles)
 763 {
 764         u64 saddr = 0;
 765         int err;
 766
 767         if (!cycles)
 768                 return 0;
 769
 770         /*
 771          * Only set start when IPC can be computed. We can only
 772          * compute it when the basic block is completely in a single
 773          * function.
 774          * Special case the case when the jump is elsewhere, but
 775          * it starts on the function start.
 776          */
 777         if (start &&
 778                 (start->sym == ams->sym ||
 779                  (ams->sym &&
 780                    start->addr == ams->sym->start + ams->map->start)))
 781                 saddr = start->al_addr;
 782         if (saddr == 0)
 783                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
 784                         ams->addr,
 785                         start ? start->addr : 0,
 786                         ams->sym ? ams->sym->start + ams->map->start : 0,
 787                         saddr);
 788         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
 789         if (err)
 790                 pr_debug2("account_cycles failed %d\n", err);
 791         return err;
 792 }
 793
 794 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 795 {
 796         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 797 }
 798
 799 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 800 {
 801         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 802 }
 803
 804 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
 805 {
 806         dl->ins.ops = ins__find(arch, dl->ins.name);
 807
 808         if (!dl->ins.ops)
 809                 return;
 810
 811         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0)
 812                 dl->ins.ops = NULL;
 813 }
 814
 815 static int disasm_line__parse(char *line, const char **namep, char **rawp)
 816 {
 817         char tmp, *name = ltrim(line);
 818
 819         if (name[0] == '\0')
 820                 return -1;
 821
 822         *rawp = name + 1;
 823
 824         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 825                 ++*rawp;
 826
 827         tmp = (*rawp)[0];
 828         (*rawp)[0] = '\0';
 829         *namep = strdup(name);
 830
 831         if (*namep == NULL)
 832                 goto out_free_name;
 833
 834         (*rawp)[0] = tmp;
 835         *rawp = ltrim(*rawp);
 836
 837         return 0;
 838
 839 out_free_name:
 840         free((void *)namep);
 841         *namep = NULL;
 842         return -1;
 843 }
 844
 845 static struct disasm_line *disasm_line__new(s64 offset, char *line,
 846                                             size_t privsize, int line_nr,
 847                                             struct arch *arch,
 848                                             struct map *map)
 849 {
 850         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 851
 852         if (dl != NULL) {
 853                 dl->offset = offset;
 854                 dl->line = strdup(line);
 855                 dl->line_nr = line_nr;
 856                 if (dl->line == NULL)
 857                         goto out_delete;
 858
 859                 if (offset != -1) {
 860                         if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0)
 861                                 goto out_free_line;
 862
 863                         disasm_line__init_ins(dl, arch, map);
 864                 }
 865         }
 866
 867         return dl;
 868
 869 out_free_line:
 870         zfree(&dl->line);
 871 out_delete:
 872         free(dl);
 873         return NULL;
 874 }
 875
 876 void disasm_line__free(struct disasm_line *dl)
 877 {
 878         zfree(&dl->line);
 879         if (dl->ins.ops && dl->ins.ops->free)
 880                 dl->ins.ops->free(&dl->ops);
 881         else
 882                 ins__delete(&dl->ops);
 883         free((void *)dl->ins.name);
 884         dl->ins.name = NULL;
 885         free(dl);
 886 }
 887
 888 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 889 {
 890         if (raw || !dl->ins.ops)
 891                 return scnprintf(bf, size, "%-6.6s %s", dl->ins.name, dl->ops.raw);
 892
 893         return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
 894 }
 895
 896 static void disasm__add(struct list_head *head, struct disasm_line *line)
 897 {
 898         list_add_tail(&line->node, head);
 899 }
 900
 901 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 902 {
 903         list_for_each_entry_continue(pos, head, node)
 904                 if (pos->offset >= 0)
 905                         return pos;
 906
 907         return NULL;
 908 }
 909
 910 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 911                             s64 end, const char **path, u64 *nr_samples)
 912 {
 913         struct source_line *src_line = notes->src->lines;
 914         double percent = 0.0;
 915         *nr_samples = 0;
 916
 917         if (src_line) {
 918                 size_t sizeof_src_line = sizeof(*src_line) +
 919                                 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
 920
 921                 while (offset < end) {
 922                         src_line = (void *)notes->src->lines +
 923                                         (sizeof_src_line * offset);
 924
 925                         if (*path == NULL)
 926                                 *path = src_line->path;
 927
 928                         percent += src_line->samples[evidx].percent;
 929                         *nr_samples += src_line->samples[evidx].nr;
 930                         offset++;
 931                 }
 932         } else {
 933                 struct sym_hist *h = annotation__histogram(notes, evidx);
 934                 unsigned int hits = 0;
 935
 936                 while (offset < end)
 937                         hits += h->addr[offset++];
 938
 939                 if (h->sum) {
 940                         *nr_samples = hits;
 941                         percent = 100.0 * hits / h->sum;
 942                 }
 943         }
 944
 945         return percent;
 946 }
 947
 948 static const char *annotate__address_color(struct block_range *br)
 949 {
 950         double cov = block_range__coverage(br);
 951
 952         if (cov >= 0) {
 953                 /* mark red for >75% coverage */
 954                 if (cov > 0.75)
 955                         return PERF_COLOR_RED;
 956
 957                 /* mark dull for <1% coverage */
 958                 if (cov < 0.01)
 959                         return PERF_COLOR_NORMAL;
 960         }
 961
 962         return PERF_COLOR_MAGENTA;
 963 }
 964
 965 static const char *annotate__asm_color(struct block_range *br)
 966 {
 967         double cov = block_range__coverage(br);
 968
 969         if (cov >= 0) {
 970                 /* mark dull for <1% coverage */
 971                 if (cov < 0.01)
 972                         return PERF_COLOR_NORMAL;
 973         }
 974
 975         return PERF_COLOR_BLUE;
 976 }
 977
 978 static void annotate__branch_printf(struct block_range *br, u64 addr)
 979 {
 980         bool emit_comment = true;
 981
 982         if (!br)
 983                 return;
 984
 985 #if 1
 986         if (br->is_target && br->start == addr) {
 987                 struct block_range *branch = br;
 988                 double p;
 989
 990                 /*
 991                  * Find matching branch to our target.
 992                  */
 993                 while (!branch->is_branch)
 994                         branch = block_range__next(branch);
 995
 996                 p = 100 *(double)br->entry / branch->coverage;
 997
 998                 if (p > 0.1) {
 999                         if (emit_comment) {
1000                                 emit_comment = false;
1001                                 printf("\t#");
1002                         }
1003
1004                         /*
1005                          * The percentage of coverage joined at this target in relation
1006                          * to the next branch.
1007                          */
1008                         printf(" +%.2f%%", p);
1009                 }
1010         }
1011 #endif
1012         if (br->is_branch && br->end == addr) {
1013                 double p = 100*(double)br->taken / br->coverage;
1014
1015                 if (p > 0.1) {
1016                         if (emit_comment) {
1017                                 emit_comment = false;
1018                                 printf("\t#");
1019                         }
1020
1021                         /*
1022                          * The percentage of coverage leaving at this branch, and
1023                          * its prediction ratio.
1024                          */
1025                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
1026                 }
1027         }
1028 }
1029
1030
1031 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
1032                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
1033                       int max_lines, struct disasm_line *queue)
1034 {
1035         static const char *prev_line;
1036         static const char *prev_color;
1037
1038         if (dl->offset != -1) {
1039                 const char *path = NULL;
1040                 u64 nr_samples;
1041                 double percent, max_percent = 0.0;
1042                 double *ppercents = &percent;
1043                 u64 *psamples = &nr_samples;
1044                 int i, nr_percent = 1;
1045                 const char *color;
1046                 struct annotation *notes = symbol__annotation(sym);
1047                 s64 offset = dl->offset;
1048                 const u64 addr = start + offset;
1049                 struct disasm_line *next;
1050                 struct block_range *br;
1051
1052                 next = disasm__get_next_ip_line(&notes->src->source, dl);
1053
1054                 if (perf_evsel__is_group_event(evsel)) {
1055                         nr_percent = evsel->nr_members;
1056                         ppercents = calloc(nr_percent, sizeof(double));
1057                         psamples = calloc(nr_percent, sizeof(u64));
1058                         if (ppercents == NULL || psamples == NULL) {
1059                                 return -1;
1060                         }
1061                 }
1062
1063                 for (i = 0; i < nr_percent; i++) {
1064                         percent = disasm__calc_percent(notes,
1065                                         notes->src->lines ? i : evsel->idx + i,
1066                                         offset,
1067                                         next ? next->offset : (s64) len,
1068                                         &path, &nr_samples);
1069
1070                         ppercents[i] = percent;
1071                         psamples[i] = nr_samples;
1072                         if (percent > max_percent)
1073                                 max_percent = percent;
1074                 }
1075
1076                 if (max_percent < min_pcnt)
1077                         return -1;
1078
1079                 if (max_lines && printed >= max_lines)
1080                         return 1;
1081
1082                 if (queue != NULL) {
1083                         list_for_each_entry_from(queue, &notes->src->source, node) {
1084                                 if (queue == dl)
1085                                         break;
1086                                 disasm_line__print(queue, sym, start, evsel, len,
1087                                                     0, 0, 1, NULL);
1088                         }
1089                 }
1090
1091                 color = get_percent_color(max_percent);
1092
1093                 /*
1094                  * Also color the filename and line if needed, with
1095                  * the same color than the percentage. Don't print it
1096                  * twice for close colored addr with the same filename:line
1097                  */
1098                 if (path) {
1099                         if (!prev_line || strcmp(prev_line, path)
1100                                        || color != prev_color) {
1101                                 color_fprintf(stdout, color, " %s", path);
1102                                 prev_line = path;
1103                                 prev_color = color;
1104                         }
1105                 }
1106
1107                 for (i = 0; i < nr_percent; i++) {
1108                         percent = ppercents[i];
1109                         nr_samples = psamples[i];
1110                         color = get_percent_color(percent);
1111
1112                         if (symbol_conf.show_total_period)
1113                                 color_fprintf(stdout, color, " %7" PRIu64,
1114                                               nr_samples);
1115                         else
1116                                 color_fprintf(stdout, color, " %7.2f", percent);
1117                 }
1118
1119                 printf(" :      ");
1120
1121                 br = block_range__find(addr);
1122                 color_fprintf(stdout, annotate__address_color(br), "  %" PRIx64 ":", addr);
1123                 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line);
1124                 annotate__branch_printf(br, addr);
1125                 printf("\n");
1126
1127                 if (ppercents != &percent)
1128                         free(ppercents);
1129
1130                 if (psamples != &nr_samples)
1131                         free(psamples);
1132
1133         } else if (max_lines && printed >= max_lines)
1134                 return 1;
1135         else {
1136                 int width = 8;
1137
1138                 if (queue)
1139                         return -1;
1140
1141                 if (perf_evsel__is_group_event(evsel))
1142                         width *= evsel->nr_members;
1143
1144                 if (!*dl->line)
1145                         printf(" %*s:\n", width, " ");
1146                 else
1147                         printf(" %*s:   %s\n", width, " ", dl->line);
1148         }
1149
1150         return 0;
1151 }
1152
1153 /*
1154  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1155  * which looks like following
1156  *
1157  *  0000000000415500 <_init>:
1158  *    415500:       sub    $0x8,%rsp
1159  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1160  *    41550b:       test   %rax,%rax
1161  *    41550e:       je     415515 <_init+0x15>
1162  *    415510:       callq  416e70 <__gmon_start__@plt>
1163  *    415515:       add    $0x8,%rsp
1164  *    415519:       retq
1165  *
1166  * it will be parsed and saved into struct disasm_line as
1167  *  <offset>       <name>  <ops.raw>
1168  *
1169  * The offset will be a relative offset from the start of the symbol and -1
1170  * means that it's not a disassembly line so should be treated differently.
1171  * The ops.raw part will be parsed further according to type of the instruction.
1172  */
1173 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
1174                                       struct arch *arch,
1175                                       FILE *file, size_t privsize,
1176                                       int *line_nr)
1177 {
1178         struct annotation *notes = symbol__annotation(sym);
1179         struct disasm_line *dl;
1180         char *line = NULL, *parsed_line, *tmp, *tmp2;
1181         size_t line_len;
1182         s64 line_ip, offset = -1;
1183         regmatch_t match[2];
1184
1185         if (getline(&line, &line_len, file) < 0)
1186                 return -1;
1187
1188         if (!line)
1189                 return -1;
1190
1191         line_ip = -1;
1192         parsed_line = rtrim(line);
1193
1194         /* /filename:linenr ? Save line number and ignore. */
1195         if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1196                 *line_nr = atoi(parsed_line + match[1].rm_so);
1197                 return 0;
1198         }
1199
1200         tmp = ltrim(parsed_line);
1201         if (*tmp) {
1202                 /*
1203                  * Parse hexa addresses followed by ':'
1204                  */
1205                 line_ip = strtoull(tmp, &tmp2, 16);
1206                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1207                         line_ip = -1;
1208         }
1209
1210         if (line_ip != -1) {
1211                 u64 start = map__rip_2objdump(map, sym->start),
1212                     end = map__rip_2objdump(map, sym->end);
1213
1214                 offset = line_ip - start;
1215                 if ((u64)line_ip < start || (u64)line_ip >= end)
1216                         offset = -1;
1217                 else
1218                         parsed_line = tmp2 + 1;
1219         }
1220
1221         dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map);
1222         free(line);
1223         (*line_nr)++;
1224
1225         if (dl == NULL)
1226                 return -1;
1227
1228         if (!disasm_line__has_offset(dl)) {
1229                 dl->ops.target.offset = dl->ops.target.addr -
1230                                         map__rip_2objdump(map, sym->start);
1231                 dl->ops.target.offset_avail = true;
1232         }
1233
1234         /* kcore has no symbols, so add the call target name */
1235         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.name) {
1236                 struct addr_map_symbol target = {
1237                         .map = map,
1238                         .addr = dl->ops.target.addr,
1239                 };
1240
1241                 if (!map_groups__find_ams(&target) &&
1242                     target.sym->start == target.al_addr)
1243                         dl->ops.target.name = strdup(target.sym->name);
1244         }
1245
1246         disasm__add(&notes->src->source, dl);
1247
1248         return 0;
1249 }
1250
1251 static __attribute__((constructor)) void symbol__init_regexpr(void)
1252 {
1253         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1254 }
1255
1256 static void delete_last_nop(struct symbol *sym)
1257 {
1258         struct annotation *notes = symbol__annotation(sym);
1259         struct list_head *list = &notes->src->source;
1260         struct disasm_line *dl;
1261
1262         while (!list_empty(list)) {
1263                 dl = list_entry(list->prev, struct disasm_line, node);
1264
1265                 if (dl->ins.ops) {
1266                         if (dl->ins.ops != &nop_ops)
1267                                 return;
1268                 } else {
1269                         if (!strstr(dl->line, " nop ") &&
1270                             !strstr(dl->line, " nopl ") &&
1271                             !strstr(dl->line, " nopw "))
1272                                 return;
1273                 }
1274
1275                 list_del(&dl->node);
1276                 disasm_line__free(dl);
1277         }
1278 }
1279
1280 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
1281                               int errnum, char *buf, size_t buflen)
1282 {
1283         struct dso *dso = map->dso;
1284
1285         BUG_ON(buflen == 0);
1286
1287         if (errnum >= 0) {
1288                 str_error_r(errnum, buf, buflen);
1289                 return 0;
1290         }
1291
1292         switch (errnum) {
1293         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1294                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1295                 char *build_id_msg = NULL;
1296
1297                 if (dso->has_build_id) {
1298                         build_id__sprintf(dso->build_id,
1299                                           sizeof(dso->build_id), bf + 15);
1300                         build_id_msg = bf;
1301                 }
1302                 scnprintf(buf, buflen,
1303                           "No vmlinux file%s\nwas found in the path.\n\n"
1304                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1305                           "Please use:\n\n"
1306                           "  perf buildid-cache -vu vmlinux\n\n"
1307                           "or:\n\n"
1308                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1309         }
1310                 break;
1311         default:
1312                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1313                 break;
1314         }
1315
1316         return 0;
1317 }
1318
1319 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1320 {
1321         char linkname[PATH_MAX];
1322         char *build_id_filename;
1323         char *build_id_path = NULL;
1324         char *pos;
1325
1326         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1327             !dso__is_kcore(dso))
1328                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1329
1330         build_id_filename = dso__build_id_filename(dso, NULL, 0);
1331         if (build_id_filename) {
1332                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1333                 free(build_id_filename);
1334         } else {
1335                 if (dso->has_build_id)
1336                         return ENOMEM;
1337                 goto fallback;
1338         }
1339
1340         build_id_path = strdup(filename);
1341         if (!build_id_path)
1342                 return -1;
1343
1344         /*
1345          * old style build-id cache has name of XX/XXXXXXX.. while
1346          * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
1347          * extract the build-id part of dirname in the new style only.
1348          */
1349         pos = strrchr(build_id_path, '/');
1350         if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
1351                 dirname(build_id_path);
1352
1353         if (dso__is_kcore(dso) ||
1354             readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
1355             strstr(linkname, DSO__NAME_KALLSYMS) ||
1356             access(filename, R_OK)) {
1357 fallback:
1358                 /*
1359                  * If we don't have build-ids or the build-id file isn't in the
1360                  * cache, or is just a kallsyms file, well, lets hope that this
1361                  * DSO is the same as when 'perf record' ran.
1362                  */
1363                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1364         }
1365
1366         free(build_id_path);
1367         return 0;
1368 }
1369
1370 static const char *annotate__norm_arch(const char *arch_name)
1371 {
1372         struct utsname uts;
1373
1374         if (!arch_name) { /* Assume we are annotating locally. */
1375                 if (uname(&uts) < 0)
1376                         return NULL;
1377                 arch_name = uts.machine;
1378         }
1379         return normalize_arch((char *)arch_name);
1380 }
1381
1382 int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize)
1383 {
1384         struct dso *dso = map->dso;
1385         char command[PATH_MAX * 2];
1386         struct arch *arch = NULL;
1387         FILE *file;
1388         char symfs_filename[PATH_MAX];
1389         struct kcore_extract kce;
1390         bool delete_extract = false;
1391         int stdout_fd[2];
1392         int lineno = 0;
1393         int nline;
1394         pid_t pid;
1395         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1396
1397         if (err)
1398                 return err;
1399
1400         arch_name = annotate__norm_arch(arch_name);
1401         if (!arch_name)
1402                 return -1;
1403
1404         arch = arch__find(arch_name);
1405         if (arch == NULL)
1406                 return -ENOTSUP;
1407
1408         if (arch->init) {
1409                 err = arch->init(arch);
1410                 if (err) {
1411                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
1412                         return err;
1413                 }
1414         }
1415
1416         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1417                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1418                  map->unmap_ip(map, sym->end));
1419
1420         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1421                  dso, dso->long_name, sym, sym->name);
1422
1423         if (dso__is_kcore(dso)) {
1424                 kce.kcore_filename = symfs_filename;
1425                 kce.addr = map__rip_2objdump(map, sym->start);
1426                 kce.offs = sym->start;
1427                 kce.len = sym->end - sym->start;
1428                 if (!kcore_extract__create(&kce)) {
1429                         delete_extract = true;
1430                         strlcpy(symfs_filename, kce.extract_filename,
1431                                 sizeof(symfs_filename));
1432                 }
1433         } else if (dso__needs_decompress(dso)) {
1434                 char tmp[PATH_MAX];
1435                 struct kmod_path m;
1436                 int fd;
1437                 bool ret;
1438
1439                 if (kmod_path__parse_ext(&m, symfs_filename))
1440                         goto out;
1441
1442                 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1443
1444                 fd = mkstemp(tmp);
1445                 if (fd < 0) {
1446                         free(m.ext);
1447                         goto out;
1448                 }
1449
1450                 ret = decompress_to_file(m.ext, symfs_filename, fd);
1451
1452                 if (ret)
1453                         pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename);
1454
1455                 free(m.ext);
1456                 close(fd);
1457
1458                 if (!ret)
1459                         goto out;
1460
1461                 strcpy(symfs_filename, tmp);
1462         }
1463
1464         snprintf(command, sizeof(command),
1465                  "%s %s%s --start-address=0x%016" PRIx64
1466                  " --stop-address=0x%016" PRIx64
1467                  " -l -d %s %s -C \"%s\" 2>/dev/null|grep -v \"%s:\"|expand",
1468                  objdump_path ? objdump_path : "objdump",
1469                  disassembler_style ? "-M " : "",
1470                  disassembler_style ? disassembler_style : "",
1471                  map__rip_2objdump(map, sym->start),
1472                  map__rip_2objdump(map, sym->end),
1473                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1474                  symbol_conf.annotate_src ? "-S" : "",
1475                  symfs_filename, symfs_filename);
1476
1477         pr_debug("Executing: %s\n", command);
1478
1479         err = -1;
1480         if (pipe(stdout_fd) < 0) {
1481                 pr_err("Failure creating the pipe to run %s\n", command);
1482                 goto out_remove_tmp;
1483         }
1484
1485         pid = fork();
1486         if (pid < 0) {
1487                 pr_err("Failure forking to run %s\n", command);
1488                 goto out_close_stdout;
1489         }
1490
1491         if (pid == 0) {
1492                 close(stdout_fd[0]);
1493                 dup2(stdout_fd[1], 1);
1494                 close(stdout_fd[1]);
1495                 execl("/bin/sh", "sh", "-c", command, NULL);
1496                 perror(command);
1497                 exit(-1);
1498         }
1499
1500         close(stdout_fd[1]);
1501
1502         file = fdopen(stdout_fd[0], "r");
1503         if (!file) {
1504                 pr_err("Failure creating FILE stream for %s\n", command);
1505                 /*
1506                  * If we were using debug info should retry with
1507                  * original binary.
1508                  */
1509                 goto out_remove_tmp;
1510         }
1511
1512         nline = 0;
1513         while (!feof(file)) {
1514                 /*
1515                  * The source code line number (lineno) needs to be kept in
1516                  * accross calls to symbol__parse_objdump_line(), so that it
1517                  * can associate it with the instructions till the next one.
1518                  * See disasm_line__new() and struct disasm_line::line_nr.
1519                  */
1520                 if (symbol__parse_objdump_line(sym, map, arch, file, privsize,
1521                             &lineno) < 0)
1522                         break;
1523                 nline++;
1524         }
1525
1526         if (nline == 0)
1527                 pr_err("No output from %s\n", command);
1528
1529         /*
1530          * kallsyms does not have symbol sizes so there may a nop at the end.
1531          * Remove it.
1532          */
1533         if (dso__is_kcore(dso))
1534                 delete_last_nop(sym);
1535
1536         fclose(file);
1537         err = 0;
1538 out_remove_tmp:
1539         close(stdout_fd[0]);
1540
1541         if (dso__needs_decompress(dso))
1542                 unlink(symfs_filename);
1543
1544         if (delete_extract)
1545                 kcore_extract__delete(&kce);
1546 out:
1547         return err;
1548
1549 out_close_stdout:
1550         close(stdout_fd[1]);
1551         goto out_remove_tmp;
1552 }
1553
1554 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1555 {
1556         struct source_line *iter;
1557         struct rb_node **p = &root->rb_node;
1558         struct rb_node *parent = NULL;
1559         int i, ret;
1560
1561         while (*p != NULL) {
1562                 parent = *p;
1563                 iter = rb_entry(parent, struct source_line, node);
1564
1565                 ret = strcmp(iter->path, src_line->path);
1566                 if (ret == 0) {
1567                         for (i = 0; i < src_line->nr_pcnt; i++)
1568                                 iter->samples[i].percent_sum += src_line->samples[i].percent;
1569                         return;
1570                 }
1571
1572                 if (ret < 0)
1573                         p = &(*p)->rb_left;
1574                 else
1575                         p = &(*p)->rb_right;
1576         }
1577
1578         for (i = 0; i < src_line->nr_pcnt; i++)
1579                 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1580
1581         rb_link_node(&src_line->node, parent, p);
1582         rb_insert_color(&src_line->node, root);
1583 }
1584
1585 static int cmp_source_line(struct source_line *a, struct source_line *b)
1586 {
1587         int i;
1588
1589         for (i = 0; i < a->nr_pcnt; i++) {
1590                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1591                         continue;
1592                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1593         }
1594
1595         return 0;
1596 }
1597
1598 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1599 {
1600         struct source_line *iter;
1601         struct rb_node **p = &root->rb_node;
1602         struct rb_node *parent = NULL;
1603
1604         while (*p != NULL) {
1605                 parent = *p;
1606                 iter = rb_entry(parent, struct source_line, node);
1607
1608                 if (cmp_source_line(src_line, iter))
1609                         p = &(*p)->rb_left;
1610                 else
1611                         p = &(*p)->rb_right;
1612         }
1613
1614         rb_link_node(&src_line->node, parent, p);
1615         rb_insert_color(&src_line->node, root);
1616 }
1617
1618 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1619 {
1620         struct source_line *src_line;
1621         struct rb_node *node;
1622
1623         node = rb_first(src_root);
1624         while (node) {
1625                 struct rb_node *next;
1626
1627                 src_line = rb_entry(node, struct source_line, node);
1628                 next = rb_next(node);
1629                 rb_erase(node, src_root);
1630
1631                 __resort_source_line(dest_root, src_line);
1632                 node = next;
1633         }
1634 }
1635
1636 static void symbol__free_source_line(struct symbol *sym, int len)
1637 {
1638         struct annotation *notes = symbol__annotation(sym);
1639         struct source_line *src_line = notes->src->lines;
1640         size_t sizeof_src_line;
1641         int i;
1642
1643         sizeof_src_line = sizeof(*src_line) +
1644                           (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1645
1646         for (i = 0; i < len; i++) {
1647                 free_srcline(src_line->path);
1648                 src_line = (void *)src_line + sizeof_src_line;
1649         }
1650
1651         zfree(&notes->src->lines);
1652 }
1653
1654 /* Get the filename:line for the colored entries */
1655 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1656                                    struct perf_evsel *evsel,
1657                                    struct rb_root *root, int len)
1658 {
1659         u64 start;
1660         int i, k;
1661         int evidx = evsel->idx;
1662         struct source_line *src_line;
1663         struct annotation *notes = symbol__annotation(sym);
1664         struct sym_hist *h = annotation__histogram(notes, evidx);
1665         struct rb_root tmp_root = RB_ROOT;
1666         int nr_pcnt = 1;
1667         u64 h_sum = h->sum;
1668         size_t sizeof_src_line = sizeof(struct source_line);
1669
1670         if (perf_evsel__is_group_event(evsel)) {
1671                 for (i = 1; i < evsel->nr_members; i++) {
1672                         h = annotation__histogram(notes, evidx + i);
1673                         h_sum += h->sum;
1674                 }
1675                 nr_pcnt = evsel->nr_members;
1676                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1677         }
1678
1679         if (!h_sum)
1680                 return 0;
1681
1682         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1683         if (!notes->src->lines)
1684                 return -1;
1685
1686         start = map__rip_2objdump(map, sym->start);
1687
1688         for (i = 0; i < len; i++) {
1689                 u64 offset, nr_samples;
1690                 double percent_max = 0.0;
1691
1692                 src_line->nr_pcnt = nr_pcnt;
1693
1694                 for (k = 0; k < nr_pcnt; k++) {
1695                         double percent = 0.0;
1696
1697                         h = annotation__histogram(notes, evidx + k);
1698                         nr_samples = h->addr[i];
1699                         if (h->sum)
1700                                 percent = 100.0 * nr_samples / h->sum;
1701
1702                         if (percent > percent_max)
1703                                 percent_max = percent;
1704                         src_line->samples[k].percent = percent;
1705                         src_line->samples[k].nr = nr_samples;
1706                 }
1707
1708                 if (percent_max <= 0.5)
1709                         goto next;
1710
1711                 offset = start + i;
1712                 src_line->path = get_srcline(map->dso, offset, NULL,
1713                                              false, true);
1714                 insert_source_line(&tmp_root, src_line);
1715
1716         next:
1717                 src_line = (void *)src_line + sizeof_src_line;
1718         }
1719
1720         resort_source_line(root, &tmp_root);
1721         return 0;
1722 }
1723
1724 static void print_summary(struct rb_root *root, const char *filename)
1725 {
1726         struct source_line *src_line;
1727         struct rb_node *node;
1728
1729         printf("\nSorted summary for file %s\n", filename);
1730         printf("----------------------------------------------\n\n");
1731
1732         if (RB_EMPTY_ROOT(root)) {
1733                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1734                 return;
1735         }
1736
1737         node = rb_first(root);
1738         while (node) {
1739                 double percent, percent_max = 0.0;
1740                 const char *color;
1741                 char *path;
1742                 int i;
1743
1744                 src_line = rb_entry(node, struct source_line, node);
1745                 for (i = 0; i < src_line->nr_pcnt; i++) {
1746                         percent = src_line->samples[i].percent_sum;
1747                         color = get_percent_color(percent);
1748                         color_fprintf(stdout, color, " %7.2f", percent);
1749
1750                         if (percent > percent_max)
1751                                 percent_max = percent;
1752                 }
1753
1754                 path = src_line->path;
1755                 color = get_percent_color(percent_max);
1756                 color_fprintf(stdout, color, " %s\n", path);
1757
1758                 node = rb_next(node);
1759         }
1760 }
1761
1762 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1763 {
1764         struct annotation *notes = symbol__annotation(sym);
1765         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1766         u64 len = symbol__size(sym), offset;
1767
1768         for (offset = 0; offset < len; ++offset)
1769                 if (h->addr[offset] != 0)
1770                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1771                                sym->start + offset, h->addr[offset]);
1772         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1773 }
1774
1775 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1776                             struct perf_evsel *evsel, bool full_paths,
1777                             int min_pcnt, int max_lines, int context)
1778 {
1779         struct dso *dso = map->dso;
1780         char *filename;
1781         const char *d_filename;
1782         const char *evsel_name = perf_evsel__name(evsel);
1783         struct annotation *notes = symbol__annotation(sym);
1784         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1785         struct disasm_line *pos, *queue = NULL;
1786         u64 start = map__rip_2objdump(map, sym->start);
1787         int printed = 2, queue_len = 0;
1788         int more = 0;
1789         u64 len;
1790         int width = 8;
1791         int graph_dotted_len;
1792
1793         filename = strdup(dso->long_name);
1794         if (!filename)
1795                 return -ENOMEM;
1796
1797         if (full_paths)
1798                 d_filename = filename;
1799         else
1800                 d_filename = basename(filename);
1801
1802         len = symbol__size(sym);
1803
1804         if (perf_evsel__is_group_event(evsel))
1805                 width *= evsel->nr_members;
1806
1807         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
1808                width, width, "Percent", d_filename, evsel_name, h->sum);
1809
1810         printf("%-*.*s----\n",
1811                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1812
1813         if (verbose > 0)
1814                 symbol__annotate_hits(sym, evsel);
1815
1816         list_for_each_entry(pos, &notes->src->source, node) {
1817                 if (context && queue == NULL) {
1818                         queue = pos;
1819                         queue_len = 0;
1820                 }
1821
1822                 switch (disasm_line__print(pos, sym, start, evsel, len,
1823                                             min_pcnt, printed, max_lines,
1824                                             queue)) {
1825                 case 0:
1826                         ++printed;
1827                         if (context) {
1828                                 printed += queue_len;
1829                                 queue = NULL;
1830                                 queue_len = 0;
1831                         }
1832                         break;
1833                 case 1:
1834                         /* filtered by max_lines */
1835                         ++more;
1836                         break;
1837                 case -1:
1838                 default:
1839                         /*
1840                          * Filtered by min_pcnt or non IP lines when
1841                          * context != 0
1842                          */
1843                         if (!context)
1844                                 break;
1845                         if (queue_len == context)
1846                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1847                         else
1848                                 ++queue_len;
1849                         break;
1850                 }
1851         }
1852
1853         free(filename);
1854
1855         return more;
1856 }
1857
1858 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1859 {
1860         struct annotation *notes = symbol__annotation(sym);
1861         struct sym_hist *h = annotation__histogram(notes, evidx);
1862
1863         memset(h, 0, notes->src->sizeof_sym_hist);
1864 }
1865
1866 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1867 {
1868         struct annotation *notes = symbol__annotation(sym);
1869         struct sym_hist *h = annotation__histogram(notes, evidx);
1870         int len = symbol__size(sym), offset;
1871
1872         h->sum = 0;
1873         for (offset = 0; offset < len; ++offset) {
1874                 h->addr[offset] = h->addr[offset] * 7 / 8;
1875                 h->sum += h->addr[offset];
1876         }
1877 }
1878
1879 void disasm__purge(struct list_head *head)
1880 {
1881         struct disasm_line *pos, *n;
1882
1883         list_for_each_entry_safe(pos, n, head, node) {
1884                 list_del(&pos->node);
1885                 disasm_line__free(pos);
1886         }
1887 }
1888
1889 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1890 {
1891         size_t printed;
1892
1893         if (dl->offset == -1)
1894                 return fprintf(fp, "%s\n", dl->line);
1895
1896         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->ins.name);
1897
1898         if (dl->ops.raw[0] != '\0') {
1899                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1900                                    dl->ops.raw);
1901         }
1902
1903         return printed + fprintf(fp, "\n");
1904 }
1905
1906 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1907 {
1908         struct disasm_line *pos;
1909         size_t printed = 0;
1910
1911         list_for_each_entry(pos, head, node)
1912                 printed += disasm_line__fprintf(pos, fp);
1913
1914         return printed;
1915 }
1916
1917 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1918                          struct perf_evsel *evsel, bool print_lines,
1919                          bool full_paths, int min_pcnt, int max_lines)
1920 {
1921         struct dso *dso = map->dso;
1922         struct rb_root source_line = RB_ROOT;
1923         u64 len;
1924
1925         if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0)
1926                 return -1;
1927
1928         len = symbol__size(sym);
1929
1930         if (print_lines) {
1931                 srcline_full_filename = full_paths;
1932                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1933                 print_summary(&source_line, dso->long_name);
1934         }
1935
1936         symbol__annotate_printf(sym, map, evsel, full_paths,
1937                                 min_pcnt, max_lines, 0);
1938         if (print_lines)
1939                 symbol__free_source_line(sym, len);
1940
1941         disasm__purge(&symbol__annotation(sym)->src->source);
1942
1943         return 0;
1944 }
1945
1946 bool ui__has_annotation(void)
1947 {
1948         return use_browser == 1 && perf_hpp_list.sym;
1949 }