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 <regex.h>
  21 #include <pthread.h>
  22 #include <linux/bitops.h>
  23
  24 const char      *disassembler_style;
  25 const char      *objdump_path;
  26 static regex_t   file_lineno;
  27
  28 static struct ins *ins__find(const char *name);
  29 static int disasm_line__parse(char *line, char **namep, char **rawp);
  30
  31 static void ins__delete(struct ins_operands *ops)
  32 {
  33         if (ops == NULL)
  34                 return;
  35         zfree(&ops->source.raw);
  36         zfree(&ops->source.name);
  37         zfree(&ops->target.raw);
  38         zfree(&ops->target.name);
  39 }
  40
  41 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
  42                               struct ins_operands *ops)
  43 {
  44         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
  45 }
  46
  47 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
  48                   struct ins_operands *ops)
  49 {
  50         if (ins->ops->scnprintf)
  51                 return ins->ops->scnprintf(ins, bf, size, ops);
  52
  53         return ins__raw_scnprintf(ins, bf, size, ops);
  54 }
  55
  56 static int call__parse(struct ins_operands *ops)
  57 {
  58         char *endptr, *tok, *name;
  59
  60         ops->target.addr = strtoull(ops->raw, &endptr, 16);
  61
  62         name = strchr(endptr, '<');
  63         if (name == NULL)
  64                 goto indirect_call;
  65
  66         name++;
  67
  68         tok = strchr(name, '>');
  69         if (tok == NULL)
  70                 return -1;
  71
  72         *tok = '\0';
  73         ops->target.name = strdup(name);
  74         *tok = '>';
  75
  76         return ops->target.name == NULL ? -1 : 0;
  77
  78 indirect_call:
  79         tok = strchr(endptr, '(');
  80         if (tok != NULL) {
  81                 ops->target.addr = 0;
  82                 return 0;
  83         }
  84
  85         tok = strchr(endptr, '*');
  86         if (tok == NULL)
  87                 return -1;
  88
  89         ops->target.addr = strtoull(tok + 1, NULL, 16);
  90         return 0;
  91 }
  92
  93 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
  94                            struct ins_operands *ops)
  95 {
  96         if (ops->target.name)
  97                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
  98
  99         if (ops->target.addr == 0)
 100                 return ins__raw_scnprintf(ins, bf, size, ops);
 101
 102         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
 103 }
 104
 105 static struct ins_ops call_ops = {
 106         .parse     = call__parse,
 107         .scnprintf = call__scnprintf,
 108 };
 109
 110 bool ins__is_call(const struct ins *ins)
 111 {
 112         return ins->ops == &call_ops;
 113 }
 114
 115 static int jump__parse(struct ins_operands *ops)
 116 {
 117         const char *s = strchr(ops->raw, '+');
 118
 119         ops->target.addr = strtoull(ops->raw, NULL, 16);
 120
 121         if (s++ != NULL)
 122                 ops->target.offset = strtoull(s, NULL, 16);
 123         else
 124                 ops->target.offset = UINT64_MAX;
 125
 126         return 0;
 127 }
 128
 129 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 130                            struct ins_operands *ops)
 131 {
 132         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 133 }
 134
 135 static struct ins_ops jump_ops = {
 136         .parse     = jump__parse,
 137         .scnprintf = jump__scnprintf,
 138 };
 139
 140 bool ins__is_jump(const struct ins *ins)
 141 {
 142         return ins->ops == &jump_ops;
 143 }
 144
 145 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 146 {
 147         char *endptr, *name, *t;
 148
 149         if (strstr(raw, "(%rip)") == NULL)
 150                 return 0;
 151
 152         *addrp = strtoull(comment, &endptr, 16);
 153         name = strchr(endptr, '<');
 154         if (name == NULL)
 155                 return -1;
 156
 157         name++;
 158
 159         t = strchr(name, '>');
 160         if (t == NULL)
 161                 return 0;
 162
 163         *t = '\0';
 164         *namep = strdup(name);
 165         *t = '>';
 166
 167         return 0;
 168 }
 169
 170 static int lock__parse(struct ins_operands *ops)
 171 {
 172         char *name;
 173
 174         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 175         if (ops->locked.ops == NULL)
 176                 return 0;
 177
 178         if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
 179                 goto out_free_ops;
 180
 181         ops->locked.ins = ins__find(name);
 182         free(name);
 183
 184         if (ops->locked.ins == NULL)
 185                 goto out_free_ops;
 186
 187         if (!ops->locked.ins->ops)
 188                 return 0;
 189
 190         if (ops->locked.ins->ops->parse &&
 191             ops->locked.ins->ops->parse(ops->locked.ops) < 0)
 192                 goto out_free_ops;
 193
 194         return 0;
 195
 196 out_free_ops:
 197         zfree(&ops->locked.ops);
 198         return 0;
 199 }
 200
 201 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 202                            struct ins_operands *ops)
 203 {
 204         int printed;
 205
 206         if (ops->locked.ins == NULL)
 207                 return ins__raw_scnprintf(ins, bf, size, ops);
 208
 209         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 210         return printed + ins__scnprintf(ops->locked.ins, bf + printed,
 211                                         size - printed, ops->locked.ops);
 212 }
 213
 214 static void lock__delete(struct ins_operands *ops)
 215 {
 216         struct ins *ins = ops->locked.ins;
 217
 218         if (ins && ins->ops->free)
 219                 ins->ops->free(ops->locked.ops);
 220         else
 221                 ins__delete(ops->locked.ops);
 222
 223         zfree(&ops->locked.ops);
 224         zfree(&ops->target.raw);
 225         zfree(&ops->target.name);
 226 }
 227
 228 static struct ins_ops lock_ops = {
 229         .free      = lock__delete,
 230         .parse     = lock__parse,
 231         .scnprintf = lock__scnprintf,
 232 };
 233
 234 static int mov__parse(struct ins_operands *ops)
 235 {
 236         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 237
 238         if (s == NULL)
 239                 return -1;
 240
 241         *s = '\0';
 242         ops->source.raw = strdup(ops->raw);
 243         *s = ',';
 244
 245         if (ops->source.raw == NULL)
 246                 return -1;
 247
 248         target = ++s;
 249         comment = strchr(s, '#');
 250
 251         if (comment != NULL)
 252                 s = comment - 1;
 253         else
 254                 s = strchr(s, '\0') - 1;
 255
 256         while (s > target && isspace(s[0]))
 257                 --s;
 258         s++;
 259         prev = *s;
 260         *s = '\0';
 261
 262         ops->target.raw = strdup(target);
 263         *s = prev;
 264
 265         if (ops->target.raw == NULL)
 266                 goto out_free_source;
 267
 268         if (comment == NULL)
 269                 return 0;
 270
 271         while (comment[0] != '\0' && isspace(comment[0]))
 272                 ++comment;
 273
 274         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 275         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 276
 277         return 0;
 278
 279 out_free_source:
 280         zfree(&ops->source.raw);
 281         return -1;
 282 }
 283
 284 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 285                            struct ins_operands *ops)
 286 {
 287         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 288                          ops->source.name ?: ops->source.raw,
 289                          ops->target.name ?: ops->target.raw);
 290 }
 291
 292 static struct ins_ops mov_ops = {
 293         .parse     = mov__parse,
 294         .scnprintf = mov__scnprintf,
 295 };
 296
 297 static int dec__parse(struct ins_operands *ops)
 298 {
 299         char *target, *comment, *s, prev;
 300
 301         target = s = ops->raw;
 302
 303         while (s[0] != '\0' && !isspace(s[0]))
 304                 ++s;
 305         prev = *s;
 306         *s = '\0';
 307
 308         ops->target.raw = strdup(target);
 309         *s = prev;
 310
 311         if (ops->target.raw == NULL)
 312                 return -1;
 313
 314         comment = strchr(s, '#');
 315         if (comment == NULL)
 316                 return 0;
 317
 318         while (comment[0] != '\0' && isspace(comment[0]))
 319                 ++comment;
 320
 321         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 322
 323         return 0;
 324 }
 325
 326 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 327                            struct ins_operands *ops)
 328 {
 329         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 330                          ops->target.name ?: ops->target.raw);
 331 }
 332
 333 static struct ins_ops dec_ops = {
 334         .parse     = dec__parse,
 335         .scnprintf = dec__scnprintf,
 336 };
 337
 338 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 339                           struct ins_operands *ops __maybe_unused)
 340 {
 341         return scnprintf(bf, size, "%-6.6s", "nop");
 342 }
 343
 344 static struct ins_ops nop_ops = {
 345         .scnprintf = nop__scnprintf,
 346 };
 347
 348 /*
 349  * Must be sorted by name!
 350  */
 351 static struct ins instructions[] = {
 352         { .name = "add",   .ops  = &mov_ops, },
 353         { .name = "addl",  .ops  = &mov_ops, },
 354         { .name = "addq",  .ops  = &mov_ops, },
 355         { .name = "addw",  .ops  = &mov_ops, },
 356         { .name = "and",   .ops  = &mov_ops, },
 357         { .name = "bts",   .ops  = &mov_ops, },
 358         { .name = "call",  .ops  = &call_ops, },
 359         { .name = "callq", .ops  = &call_ops, },
 360         { .name = "cmp",   .ops  = &mov_ops, },
 361         { .name = "cmpb",  .ops  = &mov_ops, },
 362         { .name = "cmpl",  .ops  = &mov_ops, },
 363         { .name = "cmpq",  .ops  = &mov_ops, },
 364         { .name = "cmpw",  .ops  = &mov_ops, },
 365         { .name = "cmpxch", .ops  = &mov_ops, },
 366         { .name = "dec",   .ops  = &dec_ops, },
 367         { .name = "decl",  .ops  = &dec_ops, },
 368         { .name = "imul",  .ops  = &mov_ops, },
 369         { .name = "inc",   .ops  = &dec_ops, },
 370         { .name = "incl",  .ops  = &dec_ops, },
 371         { .name = "ja",    .ops  = &jump_ops, },
 372         { .name = "jae",   .ops  = &jump_ops, },
 373         { .name = "jb",    .ops  = &jump_ops, },
 374         { .name = "jbe",   .ops  = &jump_ops, },
 375         { .name = "jc",    .ops  = &jump_ops, },
 376         { .name = "jcxz",  .ops  = &jump_ops, },
 377         { .name = "je",    .ops  = &jump_ops, },
 378         { .name = "jecxz", .ops  = &jump_ops, },
 379         { .name = "jg",    .ops  = &jump_ops, },
 380         { .name = "jge",   .ops  = &jump_ops, },
 381         { .name = "jl",    .ops  = &jump_ops, },
 382         { .name = "jle",   .ops  = &jump_ops, },
 383         { .name = "jmp",   .ops  = &jump_ops, },
 384         { .name = "jmpq",  .ops  = &jump_ops, },
 385         { .name = "jna",   .ops  = &jump_ops, },
 386         { .name = "jnae",  .ops  = &jump_ops, },
 387         { .name = "jnb",   .ops  = &jump_ops, },
 388         { .name = "jnbe",  .ops  = &jump_ops, },
 389         { .name = "jnc",   .ops  = &jump_ops, },
 390         { .name = "jne",   .ops  = &jump_ops, },
 391         { .name = "jng",   .ops  = &jump_ops, },
 392         { .name = "jnge",  .ops  = &jump_ops, },
 393         { .name = "jnl",   .ops  = &jump_ops, },
 394         { .name = "jnle",  .ops  = &jump_ops, },
 395         { .name = "jno",   .ops  = &jump_ops, },
 396         { .name = "jnp",   .ops  = &jump_ops, },
 397         { .name = "jns",   .ops  = &jump_ops, },
 398         { .name = "jnz",   .ops  = &jump_ops, },
 399         { .name = "jo",    .ops  = &jump_ops, },
 400         { .name = "jp",    .ops  = &jump_ops, },
 401         { .name = "jpe",   .ops  = &jump_ops, },
 402         { .name = "jpo",   .ops  = &jump_ops, },
 403         { .name = "jrcxz", .ops  = &jump_ops, },
 404         { .name = "js",    .ops  = &jump_ops, },
 405         { .name = "jz",    .ops  = &jump_ops, },
 406         { .name = "lea",   .ops  = &mov_ops, },
 407         { .name = "lock",  .ops  = &lock_ops, },
 408         { .name = "mov",   .ops  = &mov_ops, },
 409         { .name = "movb",  .ops  = &mov_ops, },
 410         { .name = "movdqa",.ops  = &mov_ops, },
 411         { .name = "movl",  .ops  = &mov_ops, },
 412         { .name = "movq",  .ops  = &mov_ops, },
 413         { .name = "movslq", .ops  = &mov_ops, },
 414         { .name = "movzbl", .ops  = &mov_ops, },
 415         { .name = "movzwl", .ops  = &mov_ops, },
 416         { .name = "nop",   .ops  = &nop_ops, },
 417         { .name = "nopl",  .ops  = &nop_ops, },
 418         { .name = "nopw",  .ops  = &nop_ops, },
 419         { .name = "or",    .ops  = &mov_ops, },
 420         { .name = "orl",   .ops  = &mov_ops, },
 421         { .name = "test",  .ops  = &mov_ops, },
 422         { .name = "testb", .ops  = &mov_ops, },
 423         { .name = "testl", .ops  = &mov_ops, },
 424         { .name = "xadd",  .ops  = &mov_ops, },
 425         { .name = "xbeginl", .ops  = &jump_ops, },
 426         { .name = "xbeginq", .ops  = &jump_ops, },
 427 };
 428
 429 static int ins__cmp(const void *name, const void *insp)
 430 {
 431         const struct ins *ins = insp;
 432
 433         return strcmp(name, ins->name);
 434 }
 435
 436 static struct ins *ins__find(const char *name)
 437 {
 438         const int nmemb = ARRAY_SIZE(instructions);
 439
 440         return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
 441 }
 442
 443 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
 444 {
 445         struct annotation *notes = symbol__annotation(sym);
 446         pthread_mutex_init(&notes->lock, NULL);
 447         return 0;
 448 }
 449
 450 int symbol__alloc_hist(struct symbol *sym)
 451 {
 452         struct annotation *notes = symbol__annotation(sym);
 453         const size_t size = symbol__size(sym);
 454         size_t sizeof_sym_hist;
 455
 456         /* Check for overflow when calculating sizeof_sym_hist */
 457         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 458                 return -1;
 459
 460         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 461
 462         /* Check for overflow in zalloc argument */
 463         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 464                                 / symbol_conf.nr_events)
 465                 return -1;
 466
 467         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 468         if (notes->src == NULL)
 469                 return -1;
 470         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 471         notes->src->nr_histograms   = symbol_conf.nr_events;
 472         INIT_LIST_HEAD(&notes->src->source);
 473         return 0;
 474 }
 475
 476 /* The cycles histogram is lazily allocated. */
 477 static int symbol__alloc_hist_cycles(struct symbol *sym)
 478 {
 479         struct annotation *notes = symbol__annotation(sym);
 480         const size_t size = symbol__size(sym);
 481
 482         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
 483         if (notes->src->cycles_hist == NULL)
 484                 return -1;
 485         return 0;
 486 }
 487
 488 void symbol__annotate_zero_histograms(struct symbol *sym)
 489 {
 490         struct annotation *notes = symbol__annotation(sym);
 491
 492         pthread_mutex_lock(&notes->lock);
 493         if (notes->src != NULL) {
 494                 memset(notes->src->histograms, 0,
 495                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 496                 if (notes->src->cycles_hist)
 497                         memset(notes->src->cycles_hist, 0,
 498                                 symbol__size(sym) * sizeof(struct cyc_hist));
 499         }
 500         pthread_mutex_unlock(&notes->lock);
 501 }
 502
 503 static int __symbol__account_cycles(struct annotation *notes,
 504                                     u64 start,
 505                                     unsigned offset, unsigned cycles,
 506                                     unsigned have_start)
 507 {
 508         struct cyc_hist *ch;
 509
 510         ch = notes->src->cycles_hist;
 511         /*
 512          * For now we can only account one basic block per
 513          * final jump. But multiple could be overlapping.
 514          * Always account the longest one. So when
 515          * a shorter one has been already seen throw it away.
 516          *
 517          * We separately always account the full cycles.
 518          */
 519         ch[offset].num_aggr++;
 520         ch[offset].cycles_aggr += cycles;
 521
 522         if (!have_start && ch[offset].have_start)
 523                 return 0;
 524         if (ch[offset].num) {
 525                 if (have_start && (!ch[offset].have_start ||
 526                                    ch[offset].start > start)) {
 527                         ch[offset].have_start = 0;
 528                         ch[offset].cycles = 0;
 529                         ch[offset].num = 0;
 530                         if (ch[offset].reset < 0xffff)
 531                                 ch[offset].reset++;
 532                 } else if (have_start &&
 533                            ch[offset].start < start)
 534                         return 0;
 535         }
 536         ch[offset].have_start = have_start;
 537         ch[offset].start = start;
 538         ch[offset].cycles += cycles;
 539         ch[offset].num++;
 540         return 0;
 541 }
 542
 543 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 544                                       struct annotation *notes, int evidx, u64 addr)
 545 {
 546         unsigned offset;
 547         struct sym_hist *h;
 548
 549         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 550
 551         if (addr < sym->start || addr >= sym->end)
 552                 return -ERANGE;
 553
 554         offset = addr - sym->start;
 555         h = annotation__histogram(notes, evidx);
 556         h->sum++;
 557         h->addr[offset]++;
 558
 559         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 560                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 561                   addr, addr - sym->start, evidx, h->addr[offset]);
 562         return 0;
 563 }
 564
 565 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
 566 {
 567         struct annotation *notes = symbol__annotation(sym);
 568
 569         if (notes->src == NULL) {
 570                 if (symbol__alloc_hist(sym) < 0)
 571                         return NULL;
 572         }
 573         if (!notes->src->cycles_hist && cycles) {
 574                 if (symbol__alloc_hist_cycles(sym) < 0)
 575                         return NULL;
 576         }
 577         return notes;
 578 }
 579
 580 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 581                                     int evidx, u64 addr)
 582 {
 583         struct annotation *notes;
 584
 585         if (sym == NULL)
 586                 return 0;
 587         notes = symbol__get_annotation(sym, false);
 588         if (notes == NULL)
 589                 return -ENOMEM;
 590         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 591 }
 592
 593 static int symbol__account_cycles(u64 addr, u64 start,
 594                                   struct symbol *sym, unsigned cycles)
 595 {
 596         struct annotation *notes;
 597         unsigned offset;
 598
 599         if (sym == NULL)
 600                 return 0;
 601         notes = symbol__get_annotation(sym, true);
 602         if (notes == NULL)
 603                 return -ENOMEM;
 604         if (addr < sym->start || addr >= sym->end)
 605                 return -ERANGE;
 606
 607         if (start) {
 608                 if (start < sym->start || start >= sym->end)
 609                         return -ERANGE;
 610                 if (start >= addr)
 611                         start = 0;
 612         }
 613         offset = addr - sym->start;
 614         return __symbol__account_cycles(notes,
 615                                         start ? start - sym->start : 0,
 616                                         offset, cycles,
 617                                         !!start);
 618 }
 619
 620 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 621                                     struct addr_map_symbol *start,
 622                                     unsigned cycles)
 623 {
 624         u64 saddr = 0;
 625         int err;
 626
 627         if (!cycles)
 628                 return 0;
 629
 630         /*
 631          * Only set start when IPC can be computed. We can only
 632          * compute it when the basic block is completely in a single
 633          * function.
 634          * Special case the case when the jump is elsewhere, but
 635          * it starts on the function start.
 636          */
 637         if (start &&
 638                 (start->sym == ams->sym ||
 639                  (ams->sym &&
 640                    start->addr == ams->sym->start + ams->map->start)))
 641                 saddr = start->al_addr;
 642         if (saddr == 0)
 643                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
 644                         ams->addr,
 645                         start ? start->addr : 0,
 646                         ams->sym ? ams->sym->start + ams->map->start : 0,
 647                         saddr);
 648         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
 649         if (err)
 650                 pr_debug2("account_cycles failed %d\n", err);
 651         return err;
 652 }
 653
 654 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 655 {
 656         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 657 }
 658
 659 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 660 {
 661         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 662 }
 663
 664 static void disasm_line__init_ins(struct disasm_line *dl)
 665 {
 666         dl->ins = ins__find(dl->name);
 667
 668         if (dl->ins == NULL)
 669                 return;
 670
 671         if (!dl->ins->ops)
 672                 return;
 673
 674         if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
 675                 dl->ins = NULL;
 676 }
 677
 678 static int disasm_line__parse(char *line, char **namep, char **rawp)
 679 {
 680         char *name = line, tmp;
 681
 682         while (isspace(name[0]))
 683                 ++name;
 684
 685         if (name[0] == '\0')
 686                 return -1;
 687
 688         *rawp = name + 1;
 689
 690         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 691                 ++*rawp;
 692
 693         tmp = (*rawp)[0];
 694         (*rawp)[0] = '\0';
 695         *namep = strdup(name);
 696
 697         if (*namep == NULL)
 698                 goto out_free_name;
 699
 700         (*rawp)[0] = tmp;
 701
 702         if ((*rawp)[0] != '\0') {
 703                 (*rawp)++;
 704                 while (isspace((*rawp)[0]))
 705                         ++(*rawp);
 706         }
 707
 708         return 0;
 709
 710 out_free_name:
 711         zfree(namep);
 712         return -1;
 713 }
 714
 715 static struct disasm_line *disasm_line__new(s64 offset, char *line,
 716                                         size_t privsize, int line_nr)
 717 {
 718         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 719
 720         if (dl != NULL) {
 721                 dl->offset = offset;
 722                 dl->line = strdup(line);
 723                 dl->line_nr = line_nr;
 724                 if (dl->line == NULL)
 725                         goto out_delete;
 726
 727                 if (offset != -1) {
 728                         if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 729                                 goto out_free_line;
 730
 731                         disasm_line__init_ins(dl);
 732                 }
 733         }
 734
 735         return dl;
 736
 737 out_free_line:
 738         zfree(&dl->line);
 739 out_delete:
 740         free(dl);
 741         return NULL;
 742 }
 743
 744 void disasm_line__free(struct disasm_line *dl)
 745 {
 746         zfree(&dl->line);
 747         zfree(&dl->name);
 748         if (dl->ins && dl->ins->ops->free)
 749                 dl->ins->ops->free(&dl->ops);
 750         else
 751                 ins__delete(&dl->ops);
 752         free(dl);
 753 }
 754
 755 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 756 {
 757         if (raw || !dl->ins)
 758                 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
 759
 760         return ins__scnprintf(dl->ins, bf, size, &dl->ops);
 761 }
 762
 763 static void disasm__add(struct list_head *head, struct disasm_line *line)
 764 {
 765         list_add_tail(&line->node, head);
 766 }
 767
 768 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 769 {
 770         list_for_each_entry_continue(pos, head, node)
 771                 if (pos->offset >= 0)
 772                         return pos;
 773
 774         return NULL;
 775 }
 776
 777 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 778                             s64 end, const char **path, u64 *nr_samples)
 779 {
 780         struct source_line *src_line = notes->src->lines;
 781         double percent = 0.0;
 782         *nr_samples = 0;
 783
 784         if (src_line) {
 785                 size_t sizeof_src_line = sizeof(*src_line) +
 786                                 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
 787
 788                 while (offset < end) {
 789                         src_line = (void *)notes->src->lines +
 790                                         (sizeof_src_line * offset);
 791
 792                         if (*path == NULL)
 793                                 *path = src_line->path;
 794
 795                         percent += src_line->samples[evidx].percent;
 796                         *nr_samples += src_line->samples[evidx].nr;
 797                         offset++;
 798                 }
 799         } else {
 800                 struct sym_hist *h = annotation__histogram(notes, evidx);
 801                 unsigned int hits = 0;
 802
 803                 while (offset < end)
 804                         hits += h->addr[offset++];
 805
 806                 if (h->sum) {
 807                         *nr_samples = hits;
 808                         percent = 100.0 * hits / h->sum;
 809                 }
 810         }
 811
 812         return percent;
 813 }
 814
 815 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
 816                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
 817                       int max_lines, struct disasm_line *queue)
 818 {
 819         static const char *prev_line;
 820         static const char *prev_color;
 821
 822         if (dl->offset != -1) {
 823                 const char *path = NULL;
 824                 u64 nr_samples;
 825                 double percent, max_percent = 0.0;
 826                 double *ppercents = &percent;
 827                 u64 *psamples = &nr_samples;
 828                 int i, nr_percent = 1;
 829                 const char *color;
 830                 struct annotation *notes = symbol__annotation(sym);
 831                 s64 offset = dl->offset;
 832                 const u64 addr = start + offset;
 833                 struct disasm_line *next;
 834
 835                 next = disasm__get_next_ip_line(&notes->src->source, dl);
 836
 837                 if (perf_evsel__is_group_event(evsel)) {
 838                         nr_percent = evsel->nr_members;
 839                         ppercents = calloc(nr_percent, sizeof(double));
 840                         psamples = calloc(nr_percent, sizeof(u64));
 841                         if (ppercents == NULL || psamples == NULL) {
 842                                 return -1;
 843                         }
 844                 }
 845
 846                 for (i = 0; i < nr_percent; i++) {
 847                         percent = disasm__calc_percent(notes,
 848                                         notes->src->lines ? i : evsel->idx + i,
 849                                         offset,
 850                                         next ? next->offset : (s64) len,
 851                                         &path, &nr_samples);
 852
 853                         ppercents[i] = percent;
 854                         psamples[i] = nr_samples;
 855                         if (percent > max_percent)
 856                                 max_percent = percent;
 857                 }
 858
 859                 if (max_percent < min_pcnt)
 860                         return -1;
 861
 862                 if (max_lines && printed >= max_lines)
 863                         return 1;
 864
 865                 if (queue != NULL) {
 866                         list_for_each_entry_from(queue, &notes->src->source, node) {
 867                                 if (queue == dl)
 868                                         break;
 869                                 disasm_line__print(queue, sym, start, evsel, len,
 870                                                     0, 0, 1, NULL);
 871                         }
 872                 }
 873
 874                 color = get_percent_color(max_percent);
 875
 876                 /*
 877                  * Also color the filename and line if needed, with
 878                  * the same color than the percentage. Don't print it
 879                  * twice for close colored addr with the same filename:line
 880                  */
 881                 if (path) {
 882                         if (!prev_line || strcmp(prev_line, path)
 883                                        || color != prev_color) {
 884                                 color_fprintf(stdout, color, " %s", path);
 885                                 prev_line = path;
 886                                 prev_color = color;
 887                         }
 888                 }
 889
 890                 for (i = 0; i < nr_percent; i++) {
 891                         percent = ppercents[i];
 892                         nr_samples = psamples[i];
 893                         color = get_percent_color(percent);
 894
 895                         if (symbol_conf.show_total_period)
 896                                 color_fprintf(stdout, color, " %7" PRIu64,
 897                                               nr_samples);
 898                         else
 899                                 color_fprintf(stdout, color, " %7.2f", percent);
 900                 }
 901
 902                 printf(" :      ");
 903                 color_fprintf(stdout, PERF_COLOR_MAGENTA, "  %" PRIx64 ":", addr);
 904                 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
 905
 906                 if (ppercents != &percent)
 907                         free(ppercents);
 908
 909                 if (psamples != &nr_samples)
 910                         free(psamples);
 911
 912         } else if (max_lines && printed >= max_lines)
 913                 return 1;
 914         else {
 915                 int width = 8;
 916
 917                 if (queue)
 918                         return -1;
 919
 920                 if (perf_evsel__is_group_event(evsel))
 921                         width *= evsel->nr_members;
 922
 923                 if (!*dl->line)
 924                         printf(" %*s:\n", width, " ");
 925                 else
 926                         printf(" %*s:   %s\n", width, " ", dl->line);
 927         }
 928
 929         return 0;
 930 }
 931
 932 /*
 933  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
 934  * which looks like following
 935  *
 936  *  0000000000415500 <_init>:
 937  *    415500:       sub    $0x8,%rsp
 938  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
 939  *    41550b:       test   %rax,%rax
 940  *    41550e:       je     415515 <_init+0x15>
 941  *    415510:       callq  416e70 <__gmon_start__@plt>
 942  *    415515:       add    $0x8,%rsp
 943  *    415519:       retq
 944  *
 945  * it will be parsed and saved into struct disasm_line as
 946  *  <offset>       <name>  <ops.raw>
 947  *
 948  * The offset will be a relative offset from the start of the symbol and -1
 949  * means that it's not a disassembly line so should be treated differently.
 950  * The ops.raw part will be parsed further according to type of the instruction.
 951  */
 952 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 953                                       FILE *file, size_t privsize,
 954                                       int *line_nr)
 955 {
 956         struct annotation *notes = symbol__annotation(sym);
 957         struct disasm_line *dl;
 958         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
 959         size_t line_len;
 960         s64 line_ip, offset = -1;
 961         regmatch_t match[2];
 962
 963         if (getline(&line, &line_len, file) < 0)
 964                 return -1;
 965
 966         if (!line)
 967                 return -1;
 968
 969         while (line_len != 0 && isspace(line[line_len - 1]))
 970                 line[--line_len] = '\0';
 971
 972         c = strchr(line, '\n');
 973         if (c)
 974                 *c = 0;
 975
 976         line_ip = -1;
 977         parsed_line = line;
 978
 979         /* /filename:linenr ? Save line number and ignore. */
 980         if (regexec(&file_lineno, line, 2, match, 0) == 0) {
 981                 *line_nr = atoi(line + match[1].rm_so);
 982                 return 0;
 983         }
 984
 985         /*
 986          * Strip leading spaces:
 987          */
 988         tmp = line;
 989         while (*tmp) {
 990                 if (*tmp != ' ')
 991                         break;
 992                 tmp++;
 993         }
 994
 995         if (*tmp) {
 996                 /*
 997                  * Parse hexa addresses followed by ':'
 998                  */
 999                 line_ip = strtoull(tmp, &tmp2, 16);
1000                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1001                         line_ip = -1;
1002         }
1003
1004         if (line_ip != -1) {
1005                 u64 start = map__rip_2objdump(map, sym->start),
1006                     end = map__rip_2objdump(map, sym->end);
1007
1008                 offset = line_ip - start;
1009                 if ((u64)line_ip < start || (u64)line_ip >= end)
1010                         offset = -1;
1011                 else
1012                         parsed_line = tmp2 + 1;
1013         }
1014
1015         dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
1016         free(line);
1017         (*line_nr)++;
1018
1019         if (dl == NULL)
1020                 return -1;
1021
1022         if (dl->ops.target.offset == UINT64_MAX)
1023                 dl->ops.target.offset = dl->ops.target.addr -
1024                                         map__rip_2objdump(map, sym->start);
1025
1026         /* kcore has no symbols, so add the call target name */
1027         if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
1028                 struct addr_map_symbol target = {
1029                         .map = map,
1030                         .addr = dl->ops.target.addr,
1031                 };
1032
1033                 if (!map_groups__find_ams(&target, NULL) &&
1034                     target.sym->start == target.al_addr)
1035                         dl->ops.target.name = strdup(target.sym->name);
1036         }
1037
1038         disasm__add(&notes->src->source, dl);
1039
1040         return 0;
1041 }
1042
1043 static __attribute__((constructor)) void symbol__init_regexpr(void)
1044 {
1045         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1046 }
1047
1048 static void delete_last_nop(struct symbol *sym)
1049 {
1050         struct annotation *notes = symbol__annotation(sym);
1051         struct list_head *list = &notes->src->source;
1052         struct disasm_line *dl;
1053
1054         while (!list_empty(list)) {
1055                 dl = list_entry(list->prev, struct disasm_line, node);
1056
1057                 if (dl->ins && dl->ins->ops) {
1058                         if (dl->ins->ops != &nop_ops)
1059                                 return;
1060                 } else {
1061                         if (!strstr(dl->line, " nop ") &&
1062                             !strstr(dl->line, " nopl ") &&
1063                             !strstr(dl->line, " nopw "))
1064                                 return;
1065                 }
1066
1067                 list_del(&dl->node);
1068                 disasm_line__free(dl);
1069         }
1070 }
1071
1072 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
1073 {
1074         struct dso *dso = map->dso;
1075         char *filename = dso__build_id_filename(dso, NULL, 0);
1076         bool free_filename = true;
1077         char command[PATH_MAX * 2];
1078         FILE *file;
1079         int err = 0;
1080         char symfs_filename[PATH_MAX];
1081         struct kcore_extract kce;
1082         bool delete_extract = false;
1083         int lineno = 0;
1084
1085         if (filename)
1086                 symbol__join_symfs(symfs_filename, filename);
1087
1088         if (filename == NULL) {
1089                 if (dso->has_build_id) {
1090                         pr_err("Can't annotate %s: not enough memory\n",
1091                                sym->name);
1092                         return -ENOMEM;
1093                 }
1094                 goto fallback;
1095         } else if (dso__is_kcore(dso)) {
1096                 goto fallback;
1097         } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
1098                    strstr(command, "[kernel.kallsyms]") ||
1099                    access(symfs_filename, R_OK)) {
1100                 free(filename);
1101 fallback:
1102                 /*
1103                  * If we don't have build-ids or the build-id file isn't in the
1104                  * cache, or is just a kallsyms file, well, lets hope that this
1105                  * DSO is the same as when 'perf record' ran.
1106                  */
1107                 filename = (char *)dso->long_name;
1108                 symbol__join_symfs(symfs_filename, filename);
1109                 free_filename = false;
1110         }
1111
1112         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1113             !dso__is_kcore(dso)) {
1114                 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
1115                 char *build_id_msg = NULL;
1116
1117                 if (dso->annotate_warned)
1118                         goto out_free_filename;
1119
1120                 if (dso->has_build_id) {
1121                         build_id__sprintf(dso->build_id,
1122                                           sizeof(dso->build_id), bf + 15);
1123                         build_id_msg = bf;
1124                 }
1125                 err = -ENOENT;
1126                 dso->annotate_warned = 1;
1127                 pr_err("Can't annotate %s:\n\n"
1128                        "No vmlinux file%s\nwas found in the path.\n\n"
1129                        "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1130                        "Please use:\n\n"
1131                        "  perf buildid-cache -vu vmlinux\n\n"
1132                        "or:\n\n"
1133                        "  --vmlinux vmlinux\n",
1134                        sym->name, build_id_msg ?: "");
1135                 goto out_free_filename;
1136         }
1137
1138         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1139                  filename, sym->name, map->unmap_ip(map, sym->start),
1140                  map->unmap_ip(map, sym->end));
1141
1142         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1143                  dso, dso->long_name, sym, sym->name);
1144
1145         if (dso__is_kcore(dso)) {
1146                 kce.kcore_filename = symfs_filename;
1147                 kce.addr = map__rip_2objdump(map, sym->start);
1148                 kce.offs = sym->start;
1149                 kce.len = sym->end - sym->start;
1150                 if (!kcore_extract__create(&kce)) {
1151                         delete_extract = true;
1152                         strlcpy(symfs_filename, kce.extract_filename,
1153                                 sizeof(symfs_filename));
1154                         if (free_filename) {
1155                                 free(filename);
1156                                 free_filename = false;
1157                         }
1158                         filename = symfs_filename;
1159                 }
1160         } else if (dso__needs_decompress(dso)) {
1161                 char tmp[PATH_MAX];
1162                 struct kmod_path m;
1163                 int fd;
1164                 bool ret;
1165
1166                 if (kmod_path__parse_ext(&m, symfs_filename))
1167                         goto out_free_filename;
1168
1169                 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1170
1171                 fd = mkstemp(tmp);
1172                 if (fd < 0) {
1173                         free(m.ext);
1174                         goto out_free_filename;
1175                 }
1176
1177                 ret = decompress_to_file(m.ext, symfs_filename, fd);
1178
1179                 free(m.ext);
1180                 close(fd);
1181
1182                 if (!ret)
1183                         goto out_free_filename;
1184
1185                 strcpy(symfs_filename, tmp);
1186         }
1187
1188         snprintf(command, sizeof(command),
1189                  "%s %s%s --start-address=0x%016" PRIx64
1190                  " --stop-address=0x%016" PRIx64
1191                  " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
1192                  objdump_path ? objdump_path : "objdump",
1193                  disassembler_style ? "-M " : "",
1194                  disassembler_style ? disassembler_style : "",
1195                  map__rip_2objdump(map, sym->start),
1196                  map__rip_2objdump(map, sym->end),
1197                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1198                  symbol_conf.annotate_src ? "-S" : "",
1199                  symfs_filename, filename);
1200
1201         pr_debug("Executing: %s\n", command);
1202
1203         file = popen(command, "r");
1204         if (!file)
1205                 goto out_remove_tmp;
1206
1207         while (!feof(file))
1208                 if (symbol__parse_objdump_line(sym, map, file, privsize,
1209                             &lineno) < 0)
1210                         break;
1211
1212         /*
1213          * kallsyms does not have symbol sizes so there may a nop at the end.
1214          * Remove it.
1215          */
1216         if (dso__is_kcore(dso))
1217                 delete_last_nop(sym);
1218
1219         pclose(file);
1220
1221 out_remove_tmp:
1222         if (dso__needs_decompress(dso))
1223                 unlink(symfs_filename);
1224 out_free_filename:
1225         if (delete_extract)
1226                 kcore_extract__delete(&kce);
1227         if (free_filename)
1228                 free(filename);
1229         return err;
1230 }
1231
1232 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1233 {
1234         struct source_line *iter;
1235         struct rb_node **p = &root->rb_node;
1236         struct rb_node *parent = NULL;
1237         int i, ret;
1238
1239         while (*p != NULL) {
1240                 parent = *p;
1241                 iter = rb_entry(parent, struct source_line, node);
1242
1243                 ret = strcmp(iter->path, src_line->path);
1244                 if (ret == 0) {
1245                         for (i = 0; i < src_line->nr_pcnt; i++)
1246                                 iter->samples[i].percent_sum += src_line->samples[i].percent;
1247                         return;
1248                 }
1249
1250                 if (ret < 0)
1251                         p = &(*p)->rb_left;
1252                 else
1253                         p = &(*p)->rb_right;
1254         }
1255
1256         for (i = 0; i < src_line->nr_pcnt; i++)
1257                 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1258
1259         rb_link_node(&src_line->node, parent, p);
1260         rb_insert_color(&src_line->node, root);
1261 }
1262
1263 static int cmp_source_line(struct source_line *a, struct source_line *b)
1264 {
1265         int i;
1266
1267         for (i = 0; i < a->nr_pcnt; i++) {
1268                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1269                         continue;
1270                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1271         }
1272
1273         return 0;
1274 }
1275
1276 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1277 {
1278         struct source_line *iter;
1279         struct rb_node **p = &root->rb_node;
1280         struct rb_node *parent = NULL;
1281
1282         while (*p != NULL) {
1283                 parent = *p;
1284                 iter = rb_entry(parent, struct source_line, node);
1285
1286                 if (cmp_source_line(src_line, iter))
1287                         p = &(*p)->rb_left;
1288                 else
1289                         p = &(*p)->rb_right;
1290         }
1291
1292         rb_link_node(&src_line->node, parent, p);
1293         rb_insert_color(&src_line->node, root);
1294 }
1295
1296 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1297 {
1298         struct source_line *src_line;
1299         struct rb_node *node;
1300
1301         node = rb_first(src_root);
1302         while (node) {
1303                 struct rb_node *next;
1304
1305                 src_line = rb_entry(node, struct source_line, node);
1306                 next = rb_next(node);
1307                 rb_erase(node, src_root);
1308
1309                 __resort_source_line(dest_root, src_line);
1310                 node = next;
1311         }
1312 }
1313
1314 static void symbol__free_source_line(struct symbol *sym, int len)
1315 {
1316         struct annotation *notes = symbol__annotation(sym);
1317         struct source_line *src_line = notes->src->lines;
1318         size_t sizeof_src_line;
1319         int i;
1320
1321         sizeof_src_line = sizeof(*src_line) +
1322                           (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1323
1324         for (i = 0; i < len; i++) {
1325                 free_srcline(src_line->path);
1326                 src_line = (void *)src_line + sizeof_src_line;
1327         }
1328
1329         zfree(&notes->src->lines);
1330 }
1331
1332 /* Get the filename:line for the colored entries */
1333 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1334                                    struct perf_evsel *evsel,
1335                                    struct rb_root *root, int len)
1336 {
1337         u64 start;
1338         int i, k;
1339         int evidx = evsel->idx;
1340         struct source_line *src_line;
1341         struct annotation *notes = symbol__annotation(sym);
1342         struct sym_hist *h = annotation__histogram(notes, evidx);
1343         struct rb_root tmp_root = RB_ROOT;
1344         int nr_pcnt = 1;
1345         u64 h_sum = h->sum;
1346         size_t sizeof_src_line = sizeof(struct source_line);
1347
1348         if (perf_evsel__is_group_event(evsel)) {
1349                 for (i = 1; i < evsel->nr_members; i++) {
1350                         h = annotation__histogram(notes, evidx + i);
1351                         h_sum += h->sum;
1352                 }
1353                 nr_pcnt = evsel->nr_members;
1354                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1355         }
1356
1357         if (!h_sum)
1358                 return 0;
1359
1360         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1361         if (!notes->src->lines)
1362                 return -1;
1363
1364         start = map__rip_2objdump(map, sym->start);
1365
1366         for (i = 0; i < len; i++) {
1367                 u64 offset;
1368                 double percent_max = 0.0;
1369
1370                 src_line->nr_pcnt = nr_pcnt;
1371
1372                 for (k = 0; k < nr_pcnt; k++) {
1373                         h = annotation__histogram(notes, evidx + k);
1374                         src_line->samples[k].percent = 100.0 * h->addr[i] / h->sum;
1375
1376                         if (src_line->samples[k].percent > percent_max)
1377                                 percent_max = src_line->samples[k].percent;
1378                 }
1379
1380                 if (percent_max <= 0.5)
1381                         goto next;
1382
1383                 offset = start + i;
1384                 src_line->path = get_srcline(map->dso, offset, NULL, false);
1385                 insert_source_line(&tmp_root, src_line);
1386
1387         next:
1388                 src_line = (void *)src_line + sizeof_src_line;
1389         }
1390
1391         resort_source_line(root, &tmp_root);
1392         return 0;
1393 }
1394
1395 static void print_summary(struct rb_root *root, const char *filename)
1396 {
1397         struct source_line *src_line;
1398         struct rb_node *node;
1399
1400         printf("\nSorted summary for file %s\n", filename);
1401         printf("----------------------------------------------\n\n");
1402
1403         if (RB_EMPTY_ROOT(root)) {
1404                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1405                 return;
1406         }
1407
1408         node = rb_first(root);
1409         while (node) {
1410                 double percent, percent_max = 0.0;
1411                 const char *color;
1412                 char *path;
1413                 int i;
1414
1415                 src_line = rb_entry(node, struct source_line, node);
1416                 for (i = 0; i < src_line->nr_pcnt; i++) {
1417                         percent = src_line->samples[i].percent_sum;
1418                         color = get_percent_color(percent);
1419                         color_fprintf(stdout, color, " %7.2f", percent);
1420
1421                         if (percent > percent_max)
1422                                 percent_max = percent;
1423                 }
1424
1425                 path = src_line->path;
1426                 color = get_percent_color(percent_max);
1427                 color_fprintf(stdout, color, " %s\n", path);
1428
1429                 node = rb_next(node);
1430         }
1431 }
1432
1433 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1434 {
1435         struct annotation *notes = symbol__annotation(sym);
1436         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1437         u64 len = symbol__size(sym), offset;
1438
1439         for (offset = 0; offset < len; ++offset)
1440                 if (h->addr[offset] != 0)
1441                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1442                                sym->start + offset, h->addr[offset]);
1443         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1444 }
1445
1446 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1447                             struct perf_evsel *evsel, bool full_paths,
1448                             int min_pcnt, int max_lines, int context)
1449 {
1450         struct dso *dso = map->dso;
1451         char *filename;
1452         const char *d_filename;
1453         const char *evsel_name = perf_evsel__name(evsel);
1454         struct annotation *notes = symbol__annotation(sym);
1455         struct disasm_line *pos, *queue = NULL;
1456         u64 start = map__rip_2objdump(map, sym->start);
1457         int printed = 2, queue_len = 0;
1458         int more = 0;
1459         u64 len;
1460         int width = 8;
1461         int namelen, evsel_name_len, graph_dotted_len;
1462
1463         filename = strdup(dso->long_name);
1464         if (!filename)
1465                 return -ENOMEM;
1466
1467         if (full_paths)
1468                 d_filename = filename;
1469         else
1470                 d_filename = basename(filename);
1471
1472         len = symbol__size(sym);
1473         namelen = strlen(d_filename);
1474         evsel_name_len = strlen(evsel_name);
1475
1476         if (perf_evsel__is_group_event(evsel))
1477                 width *= evsel->nr_members;
1478
1479         printf(" %-*.*s|        Source code & Disassembly of %s for %s\n",
1480                width, width, "Percent", d_filename, evsel_name);
1481
1482         graph_dotted_len = width + namelen + evsel_name_len;
1483         printf("-%-*.*s-----------------------------------------\n",
1484                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1485
1486         if (verbose)
1487                 symbol__annotate_hits(sym, evsel);
1488
1489         list_for_each_entry(pos, &notes->src->source, node) {
1490                 if (context && queue == NULL) {
1491                         queue = pos;
1492                         queue_len = 0;
1493                 }
1494
1495                 switch (disasm_line__print(pos, sym, start, evsel, len,
1496                                             min_pcnt, printed, max_lines,
1497                                             queue)) {
1498                 case 0:
1499                         ++printed;
1500                         if (context) {
1501                                 printed += queue_len;
1502                                 queue = NULL;
1503                                 queue_len = 0;
1504                         }
1505                         break;
1506                 case 1:
1507                         /* filtered by max_lines */
1508                         ++more;
1509                         break;
1510                 case -1:
1511                 default:
1512                         /*
1513                          * Filtered by min_pcnt or non IP lines when
1514                          * context != 0
1515                          */
1516                         if (!context)
1517                                 break;
1518                         if (queue_len == context)
1519                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1520                         else
1521                                 ++queue_len;
1522                         break;
1523                 }
1524         }
1525
1526         free(filename);
1527
1528         return more;
1529 }
1530
1531 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1532 {
1533         struct annotation *notes = symbol__annotation(sym);
1534         struct sym_hist *h = annotation__histogram(notes, evidx);
1535
1536         memset(h, 0, notes->src->sizeof_sym_hist);
1537 }
1538
1539 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1540 {
1541         struct annotation *notes = symbol__annotation(sym);
1542         struct sym_hist *h = annotation__histogram(notes, evidx);
1543         int len = symbol__size(sym), offset;
1544
1545         h->sum = 0;
1546         for (offset = 0; offset < len; ++offset) {
1547                 h->addr[offset] = h->addr[offset] * 7 / 8;
1548                 h->sum += h->addr[offset];
1549         }
1550 }
1551
1552 void disasm__purge(struct list_head *head)
1553 {
1554         struct disasm_line *pos, *n;
1555
1556         list_for_each_entry_safe(pos, n, head, node) {
1557                 list_del(&pos->node);
1558                 disasm_line__free(pos);
1559         }
1560 }
1561
1562 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1563 {
1564         size_t printed;
1565
1566         if (dl->offset == -1)
1567                 return fprintf(fp, "%s\n", dl->line);
1568
1569         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1570
1571         if (dl->ops.raw[0] != '\0') {
1572                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1573                                    dl->ops.raw);
1574         }
1575
1576         return printed + fprintf(fp, "\n");
1577 }
1578
1579 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1580 {
1581         struct disasm_line *pos;
1582         size_t printed = 0;
1583
1584         list_for_each_entry(pos, head, node)
1585                 printed += disasm_line__fprintf(pos, fp);
1586
1587         return printed;
1588 }
1589
1590 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1591                          struct perf_evsel *evsel, bool print_lines,
1592                          bool full_paths, int min_pcnt, int max_lines)
1593 {
1594         struct dso *dso = map->dso;
1595         struct rb_root source_line = RB_ROOT;
1596         u64 len;
1597
1598         if (symbol__annotate(sym, map, 0) < 0)
1599                 return -1;
1600
1601         len = symbol__size(sym);
1602
1603         if (print_lines) {
1604                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1605                 print_summary(&source_line, dso->long_name);
1606         }
1607
1608         symbol__annotate_printf(sym, map, evsel, full_paths,
1609                                 min_pcnt, max_lines, 0);
1610         if (print_lines)
1611                 symbol__free_source_line(sym, len);
1612
1613         disasm__purge(&symbol__annotation(sym)->src->source);
1614
1615         return 0;
1616 }
1617
1618 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
1619 {
1620         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
1621 }
1622
1623 bool ui__has_annotation(void)
1624 {
1625         return use_browser == 1 && sort__has_sym;
1626 }