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                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 553                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 554                 return -ERANGE;
 555         }
 556
 557         offset = addr - sym->start;
 558         h = annotation__histogram(notes, evidx);
 559         h->sum++;
 560         h->addr[offset]++;
 561
 562         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 563                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 564                   addr, addr - sym->start, evidx, h->addr[offset]);
 565         return 0;
 566 }
 567
 568 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
 569 {
 570         struct annotation *notes = symbol__annotation(sym);
 571
 572         if (notes->src == NULL) {
 573                 if (symbol__alloc_hist(sym) < 0)
 574                         return NULL;
 575         }
 576         if (!notes->src->cycles_hist && cycles) {
 577                 if (symbol__alloc_hist_cycles(sym) < 0)
 578                         return NULL;
 579         }
 580         return notes;
 581 }
 582
 583 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 584                                     int evidx, u64 addr)
 585 {
 586         struct annotation *notes;
 587
 588         if (sym == NULL)
 589                 return 0;
 590         notes = symbol__get_annotation(sym, false);
 591         if (notes == NULL)
 592                 return -ENOMEM;
 593         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 594 }
 595
 596 static int symbol__account_cycles(u64 addr, u64 start,
 597                                   struct symbol *sym, unsigned cycles)
 598 {
 599         struct annotation *notes;
 600         unsigned offset;
 601
 602         if (sym == NULL)
 603                 return 0;
 604         notes = symbol__get_annotation(sym, true);
 605         if (notes == NULL)
 606                 return -ENOMEM;
 607         if (addr < sym->start || addr >= sym->end)
 608                 return -ERANGE;
 609
 610         if (start) {
 611                 if (start < sym->start || start >= sym->end)
 612                         return -ERANGE;
 613                 if (start >= addr)
 614                         start = 0;
 615         }
 616         offset = addr - sym->start;
 617         return __symbol__account_cycles(notes,
 618                                         start ? start - sym->start : 0,
 619                                         offset, cycles,
 620                                         !!start);
 621 }
 622
 623 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
 624                                     struct addr_map_symbol *start,
 625                                     unsigned cycles)
 626 {
 627         u64 saddr = 0;
 628         int err;
 629
 630         if (!cycles)
 631                 return 0;
 632
 633         /*
 634          * Only set start when IPC can be computed. We can only
 635          * compute it when the basic block is completely in a single
 636          * function.
 637          * Special case the case when the jump is elsewhere, but
 638          * it starts on the function start.
 639          */
 640         if (start &&
 641                 (start->sym == ams->sym ||
 642                  (ams->sym &&
 643                    start->addr == ams->sym->start + ams->map->start)))
 644                 saddr = start->al_addr;
 645         if (saddr == 0)
 646                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
 647                         ams->addr,
 648                         start ? start->addr : 0,
 649                         ams->sym ? ams->sym->start + ams->map->start : 0,
 650                         saddr);
 651         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
 652         if (err)
 653                 pr_debug2("account_cycles failed %d\n", err);
 654         return err;
 655 }
 656
 657 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 658 {
 659         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 660 }
 661
 662 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 663 {
 664         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 665 }
 666
 667 static void disasm_line__init_ins(struct disasm_line *dl)
 668 {
 669         dl->ins = ins__find(dl->name);
 670
 671         if (dl->ins == NULL)
 672                 return;
 673
 674         if (!dl->ins->ops)
 675                 return;
 676
 677         if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
 678                 dl->ins = NULL;
 679 }
 680
 681 static int disasm_line__parse(char *line, char **namep, char **rawp)
 682 {
 683         char *name = line, tmp;
 684
 685         while (isspace(name[0]))
 686                 ++name;
 687
 688         if (name[0] == '\0')
 689                 return -1;
 690
 691         *rawp = name + 1;
 692
 693         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 694                 ++*rawp;
 695
 696         tmp = (*rawp)[0];
 697         (*rawp)[0] = '\0';
 698         *namep = strdup(name);
 699
 700         if (*namep == NULL)
 701                 goto out_free_name;
 702
 703         (*rawp)[0] = tmp;
 704
 705         if ((*rawp)[0] != '\0') {
 706                 (*rawp)++;
 707                 while (isspace((*rawp)[0]))
 708                         ++(*rawp);
 709         }
 710
 711         return 0;
 712
 713 out_free_name:
 714         zfree(namep);
 715         return -1;
 716 }
 717
 718 static struct disasm_line *disasm_line__new(s64 offset, char *line,
 719                                         size_t privsize, int line_nr)
 720 {
 721         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 722
 723         if (dl != NULL) {
 724                 dl->offset = offset;
 725                 dl->line = strdup(line);
 726                 dl->line_nr = line_nr;
 727                 if (dl->line == NULL)
 728                         goto out_delete;
 729
 730                 if (offset != -1) {
 731                         if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 732                                 goto out_free_line;
 733
 734                         disasm_line__init_ins(dl);
 735                 }
 736         }
 737
 738         return dl;
 739
 740 out_free_line:
 741         zfree(&dl->line);
 742 out_delete:
 743         free(dl);
 744         return NULL;
 745 }
 746
 747 void disasm_line__free(struct disasm_line *dl)
 748 {
 749         zfree(&dl->line);
 750         zfree(&dl->name);
 751         if (dl->ins && dl->ins->ops->free)
 752                 dl->ins->ops->free(&dl->ops);
 753         else
 754                 ins__delete(&dl->ops);
 755         free(dl);
 756 }
 757
 758 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 759 {
 760         if (raw || !dl->ins)
 761                 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
 762
 763         return ins__scnprintf(dl->ins, bf, size, &dl->ops);
 764 }
 765
 766 static void disasm__add(struct list_head *head, struct disasm_line *line)
 767 {
 768         list_add_tail(&line->node, head);
 769 }
 770
 771 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 772 {
 773         list_for_each_entry_continue(pos, head, node)
 774                 if (pos->offset >= 0)
 775                         return pos;
 776
 777         return NULL;
 778 }
 779
 780 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 781                             s64 end, const char **path, u64 *nr_samples)
 782 {
 783         struct source_line *src_line = notes->src->lines;
 784         double percent = 0.0;
 785         *nr_samples = 0;
 786
 787         if (src_line) {
 788                 size_t sizeof_src_line = sizeof(*src_line) +
 789                                 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
 790
 791                 while (offset < end) {
 792                         src_line = (void *)notes->src->lines +
 793                                         (sizeof_src_line * offset);
 794
 795                         if (*path == NULL)
 796                                 *path = src_line->path;
 797
 798                         percent += src_line->samples[evidx].percent;
 799                         *nr_samples += src_line->samples[evidx].nr;
 800                         offset++;
 801                 }
 802         } else {
 803                 struct sym_hist *h = annotation__histogram(notes, evidx);
 804                 unsigned int hits = 0;
 805
 806                 while (offset < end)
 807                         hits += h->addr[offset++];
 808
 809                 if (h->sum) {
 810                         *nr_samples = hits;
 811                         percent = 100.0 * hits / h->sum;
 812                 }
 813         }
 814
 815         return percent;
 816 }
 817
 818 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
 819                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
 820                       int max_lines, struct disasm_line *queue)
 821 {
 822         static const char *prev_line;
 823         static const char *prev_color;
 824
 825         if (dl->offset != -1) {
 826                 const char *path = NULL;
 827                 u64 nr_samples;
 828                 double percent, max_percent = 0.0;
 829                 double *ppercents = &percent;
 830                 u64 *psamples = &nr_samples;
 831                 int i, nr_percent = 1;
 832                 const char *color;
 833                 struct annotation *notes = symbol__annotation(sym);
 834                 s64 offset = dl->offset;
 835                 const u64 addr = start + offset;
 836                 struct disasm_line *next;
 837
 838                 next = disasm__get_next_ip_line(&notes->src->source, dl);
 839
 840                 if (perf_evsel__is_group_event(evsel)) {
 841                         nr_percent = evsel->nr_members;
 842                         ppercents = calloc(nr_percent, sizeof(double));
 843                         psamples = calloc(nr_percent, sizeof(u64));
 844                         if (ppercents == NULL || psamples == NULL) {
 845                                 return -1;
 846                         }
 847                 }
 848
 849                 for (i = 0; i < nr_percent; i++) {
 850                         percent = disasm__calc_percent(notes,
 851                                         notes->src->lines ? i : evsel->idx + i,
 852                                         offset,
 853                                         next ? next->offset : (s64) len,
 854                                         &path, &nr_samples);
 855
 856                         ppercents[i] = percent;
 857                         psamples[i] = nr_samples;
 858                         if (percent > max_percent)
 859                                 max_percent = percent;
 860                 }
 861
 862                 if (max_percent < min_pcnt)
 863                         return -1;
 864
 865                 if (max_lines && printed >= max_lines)
 866                         return 1;
 867
 868                 if (queue != NULL) {
 869                         list_for_each_entry_from(queue, &notes->src->source, node) {
 870                                 if (queue == dl)
 871                                         break;
 872                                 disasm_line__print(queue, sym, start, evsel, len,
 873                                                     0, 0, 1, NULL);
 874                         }
 875                 }
 876
 877                 color = get_percent_color(max_percent);
 878
 879                 /*
 880                  * Also color the filename and line if needed, with
 881                  * the same color than the percentage. Don't print it
 882                  * twice for close colored addr with the same filename:line
 883                  */
 884                 if (path) {
 885                         if (!prev_line || strcmp(prev_line, path)
 886                                        || color != prev_color) {
 887                                 color_fprintf(stdout, color, " %s", path);
 888                                 prev_line = path;
 889                                 prev_color = color;
 890                         }
 891                 }
 892
 893                 for (i = 0; i < nr_percent; i++) {
 894                         percent = ppercents[i];
 895                         nr_samples = psamples[i];
 896                         color = get_percent_color(percent);
 897
 898                         if (symbol_conf.show_total_period)
 899                                 color_fprintf(stdout, color, " %7" PRIu64,
 900                                               nr_samples);
 901                         else
 902                                 color_fprintf(stdout, color, " %7.2f", percent);
 903                 }
 904
 905                 printf(" :      ");
 906                 color_fprintf(stdout, PERF_COLOR_MAGENTA, "  %" PRIx64 ":", addr);
 907                 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
 908
 909                 if (ppercents != &percent)
 910                         free(ppercents);
 911
 912                 if (psamples != &nr_samples)
 913                         free(psamples);
 914
 915         } else if (max_lines && printed >= max_lines)
 916                 return 1;
 917         else {
 918                 int width = 8;
 919
 920                 if (queue)
 921                         return -1;
 922
 923                 if (perf_evsel__is_group_event(evsel))
 924                         width *= evsel->nr_members;
 925
 926                 if (!*dl->line)
 927                         printf(" %*s:\n", width, " ");
 928                 else
 929                         printf(" %*s:   %s\n", width, " ", dl->line);
 930         }
 931
 932         return 0;
 933 }
 934
 935 /*
 936  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
 937  * which looks like following
 938  *
 939  *  0000000000415500 <_init>:
 940  *    415500:       sub    $0x8,%rsp
 941  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
 942  *    41550b:       test   %rax,%rax
 943  *    41550e:       je     415515 <_init+0x15>
 944  *    415510:       callq  416e70 <__gmon_start__@plt>
 945  *    415515:       add    $0x8,%rsp
 946  *    415519:       retq
 947  *
 948  * it will be parsed and saved into struct disasm_line as
 949  *  <offset>       <name>  <ops.raw>
 950  *
 951  * The offset will be a relative offset from the start of the symbol and -1
 952  * means that it's not a disassembly line so should be treated differently.
 953  * The ops.raw part will be parsed further according to type of the instruction.
 954  */
 955 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 956                                       FILE *file, size_t privsize,
 957                                       int *line_nr)
 958 {
 959         struct annotation *notes = symbol__annotation(sym);
 960         struct disasm_line *dl;
 961         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
 962         size_t line_len;
 963         s64 line_ip, offset = -1;
 964         regmatch_t match[2];
 965
 966         if (getline(&line, &line_len, file) < 0)
 967                 return -1;
 968
 969         if (!line)
 970                 return -1;
 971
 972         while (line_len != 0 && isspace(line[line_len - 1]))
 973                 line[--line_len] = '\0';
 974
 975         c = strchr(line, '\n');
 976         if (c)
 977                 *c = 0;
 978
 979         line_ip = -1;
 980         parsed_line = line;
 981
 982         /* /filename:linenr ? Save line number and ignore. */
 983         if (regexec(&file_lineno, line, 2, match, 0) == 0) {
 984                 *line_nr = atoi(line + match[1].rm_so);
 985                 return 0;
 986         }
 987
 988         /*
 989          * Strip leading spaces:
 990          */
 991         tmp = line;
 992         while (*tmp) {
 993                 if (*tmp != ' ')
 994                         break;
 995                 tmp++;
 996         }
 997
 998         if (*tmp) {
 999                 /*
1000                  * Parse hexa addresses followed by ':'
1001                  */
1002                 line_ip = strtoull(tmp, &tmp2, 16);
1003                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1004                         line_ip = -1;
1005         }
1006
1007         if (line_ip != -1) {
1008                 u64 start = map__rip_2objdump(map, sym->start),
1009                     end = map__rip_2objdump(map, sym->end);
1010
1011                 offset = line_ip - start;
1012                 if ((u64)line_ip < start || (u64)line_ip >= end)
1013                         offset = -1;
1014                 else
1015                         parsed_line = tmp2 + 1;
1016         }
1017
1018         dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
1019         free(line);
1020         (*line_nr)++;
1021
1022         if (dl == NULL)
1023                 return -1;
1024
1025         if (dl->ops.target.offset == UINT64_MAX)
1026                 dl->ops.target.offset = dl->ops.target.addr -
1027                                         map__rip_2objdump(map, sym->start);
1028
1029         /* kcore has no symbols, so add the call target name */
1030         if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
1031                 struct addr_map_symbol target = {
1032                         .map = map,
1033                         .addr = dl->ops.target.addr,
1034                 };
1035
1036                 if (!map_groups__find_ams(&target, NULL) &&
1037                     target.sym->start == target.al_addr)
1038                         dl->ops.target.name = strdup(target.sym->name);
1039         }
1040
1041         disasm__add(&notes->src->source, dl);
1042
1043         return 0;
1044 }
1045
1046 static __attribute__((constructor)) void symbol__init_regexpr(void)
1047 {
1048         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1049 }
1050
1051 static void delete_last_nop(struct symbol *sym)
1052 {
1053         struct annotation *notes = symbol__annotation(sym);
1054         struct list_head *list = &notes->src->source;
1055         struct disasm_line *dl;
1056
1057         while (!list_empty(list)) {
1058                 dl = list_entry(list->prev, struct disasm_line, node);
1059
1060                 if (dl->ins && dl->ins->ops) {
1061                         if (dl->ins->ops != &nop_ops)
1062                                 return;
1063                 } else {
1064                         if (!strstr(dl->line, " nop ") &&
1065                             !strstr(dl->line, " nopl ") &&
1066                             !strstr(dl->line, " nopw "))
1067                                 return;
1068                 }
1069
1070                 list_del(&dl->node);
1071                 disasm_line__free(dl);
1072         }
1073 }
1074
1075 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
1076 {
1077         struct dso *dso = map->dso;
1078         char *filename = dso__build_id_filename(dso, NULL, 0);
1079         bool free_filename = true;
1080         char command[PATH_MAX * 2];
1081         FILE *file;
1082         int err = 0;
1083         char symfs_filename[PATH_MAX];
1084         struct kcore_extract kce;
1085         bool delete_extract = false;
1086         int lineno = 0;
1087
1088         if (filename)
1089                 symbol__join_symfs(symfs_filename, filename);
1090
1091         if (filename == NULL) {
1092                 if (dso->has_build_id) {
1093                         pr_err("Can't annotate %s: not enough memory\n",
1094                                sym->name);
1095                         return -ENOMEM;
1096                 }
1097                 goto fallback;
1098         } else if (dso__is_kcore(dso)) {
1099                 goto fallback;
1100         } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
1101                    strstr(command, "[kernel.kallsyms]") ||
1102                    access(symfs_filename, R_OK)) {
1103                 free(filename);
1104 fallback:
1105                 /*
1106                  * If we don't have build-ids or the build-id file isn't in the
1107                  * cache, or is just a kallsyms file, well, lets hope that this
1108                  * DSO is the same as when 'perf record' ran.
1109                  */
1110                 filename = (char *)dso->long_name;
1111                 symbol__join_symfs(symfs_filename, filename);
1112                 free_filename = false;
1113         }
1114
1115         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1116             !dso__is_kcore(dso)) {
1117                 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
1118                 char *build_id_msg = NULL;
1119
1120                 if (dso->annotate_warned)
1121                         goto out_free_filename;
1122
1123                 if (dso->has_build_id) {
1124                         build_id__sprintf(dso->build_id,
1125                                           sizeof(dso->build_id), bf + 15);
1126                         build_id_msg = bf;
1127                 }
1128                 err = -ENOENT;
1129                 dso->annotate_warned = 1;
1130                 pr_err("Can't annotate %s:\n\n"
1131                        "No vmlinux file%s\nwas found in the path.\n\n"
1132                        "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1133                        "Please use:\n\n"
1134                        "  perf buildid-cache -vu vmlinux\n\n"
1135                        "or:\n\n"
1136                        "  --vmlinux vmlinux\n",
1137                        sym->name, build_id_msg ?: "");
1138                 goto out_free_filename;
1139         }
1140
1141         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1142                  filename, sym->name, map->unmap_ip(map, sym->start),
1143                  map->unmap_ip(map, sym->end));
1144
1145         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1146                  dso, dso->long_name, sym, sym->name);
1147
1148         if (dso__is_kcore(dso)) {
1149                 kce.kcore_filename = symfs_filename;
1150                 kce.addr = map__rip_2objdump(map, sym->start);
1151                 kce.offs = sym->start;
1152                 kce.len = sym->end - sym->start;
1153                 if (!kcore_extract__create(&kce)) {
1154                         delete_extract = true;
1155                         strlcpy(symfs_filename, kce.extract_filename,
1156                                 sizeof(symfs_filename));
1157                         if (free_filename) {
1158                                 free(filename);
1159                                 free_filename = false;
1160                         }
1161                         filename = symfs_filename;
1162                 }
1163         } else if (dso__needs_decompress(dso)) {
1164                 char tmp[PATH_MAX];
1165                 struct kmod_path m;
1166                 int fd;
1167                 bool ret;
1168
1169                 if (kmod_path__parse_ext(&m, symfs_filename))
1170                         goto out_free_filename;
1171
1172                 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1173
1174                 fd = mkstemp(tmp);
1175                 if (fd < 0) {
1176                         free(m.ext);
1177                         goto out_free_filename;
1178                 }
1179
1180                 ret = decompress_to_file(m.ext, symfs_filename, fd);
1181
1182                 free(m.ext);
1183                 close(fd);
1184
1185                 if (!ret)
1186                         goto out_free_filename;
1187
1188                 strcpy(symfs_filename, tmp);
1189         }
1190
1191         snprintf(command, sizeof(command),
1192                  "%s %s%s --start-address=0x%016" PRIx64
1193                  " --stop-address=0x%016" PRIx64
1194                  " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
1195                  objdump_path ? objdump_path : "objdump",
1196                  disassembler_style ? "-M " : "",
1197                  disassembler_style ? disassembler_style : "",
1198                  map__rip_2objdump(map, sym->start),
1199                  map__rip_2objdump(map, sym->end),
1200                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1201                  symbol_conf.annotate_src ? "-S" : "",
1202                  symfs_filename, filename);
1203
1204         pr_debug("Executing: %s\n", command);
1205
1206         file = popen(command, "r");
1207         if (!file)
1208                 goto out_remove_tmp;
1209
1210         while (!feof(file))
1211                 if (symbol__parse_objdump_line(sym, map, file, privsize,
1212                             &lineno) < 0)
1213                         break;
1214
1215         /*
1216          * kallsyms does not have symbol sizes so there may a nop at the end.
1217          * Remove it.
1218          */
1219         if (dso__is_kcore(dso))
1220                 delete_last_nop(sym);
1221
1222         pclose(file);
1223
1224 out_remove_tmp:
1225         if (dso__needs_decompress(dso))
1226                 unlink(symfs_filename);
1227 out_free_filename:
1228         if (delete_extract)
1229                 kcore_extract__delete(&kce);
1230         if (free_filename)
1231                 free(filename);
1232         return err;
1233 }
1234
1235 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1236 {
1237         struct source_line *iter;
1238         struct rb_node **p = &root->rb_node;
1239         struct rb_node *parent = NULL;
1240         int i, ret;
1241
1242         while (*p != NULL) {
1243                 parent = *p;
1244                 iter = rb_entry(parent, struct source_line, node);
1245
1246                 ret = strcmp(iter->path, src_line->path);
1247                 if (ret == 0) {
1248                         for (i = 0; i < src_line->nr_pcnt; i++)
1249                                 iter->samples[i].percent_sum += src_line->samples[i].percent;
1250                         return;
1251                 }
1252
1253                 if (ret < 0)
1254                         p = &(*p)->rb_left;
1255                 else
1256                         p = &(*p)->rb_right;
1257         }
1258
1259         for (i = 0; i < src_line->nr_pcnt; i++)
1260                 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1261
1262         rb_link_node(&src_line->node, parent, p);
1263         rb_insert_color(&src_line->node, root);
1264 }
1265
1266 static int cmp_source_line(struct source_line *a, struct source_line *b)
1267 {
1268         int i;
1269
1270         for (i = 0; i < a->nr_pcnt; i++) {
1271                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1272                         continue;
1273                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1274         }
1275
1276         return 0;
1277 }
1278
1279 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1280 {
1281         struct source_line *iter;
1282         struct rb_node **p = &root->rb_node;
1283         struct rb_node *parent = NULL;
1284
1285         while (*p != NULL) {
1286                 parent = *p;
1287                 iter = rb_entry(parent, struct source_line, node);
1288
1289                 if (cmp_source_line(src_line, iter))
1290                         p = &(*p)->rb_left;
1291                 else
1292                         p = &(*p)->rb_right;
1293         }
1294
1295         rb_link_node(&src_line->node, parent, p);
1296         rb_insert_color(&src_line->node, root);
1297 }
1298
1299 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1300 {
1301         struct source_line *src_line;
1302         struct rb_node *node;
1303
1304         node = rb_first(src_root);
1305         while (node) {
1306                 struct rb_node *next;
1307
1308                 src_line = rb_entry(node, struct source_line, node);
1309                 next = rb_next(node);
1310                 rb_erase(node, src_root);
1311
1312                 __resort_source_line(dest_root, src_line);
1313                 node = next;
1314         }
1315 }
1316
1317 static void symbol__free_source_line(struct symbol *sym, int len)
1318 {
1319         struct annotation *notes = symbol__annotation(sym);
1320         struct source_line *src_line = notes->src->lines;
1321         size_t sizeof_src_line;
1322         int i;
1323
1324         sizeof_src_line = sizeof(*src_line) +
1325                           (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1326
1327         for (i = 0; i < len; i++) {
1328                 free_srcline(src_line->path);
1329                 src_line = (void *)src_line + sizeof_src_line;
1330         }
1331
1332         zfree(&notes->src->lines);
1333 }
1334
1335 /* Get the filename:line for the colored entries */
1336 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1337                                    struct perf_evsel *evsel,
1338                                    struct rb_root *root, int len)
1339 {
1340         u64 start;
1341         int i, k;
1342         int evidx = evsel->idx;
1343         struct source_line *src_line;
1344         struct annotation *notes = symbol__annotation(sym);
1345         struct sym_hist *h = annotation__histogram(notes, evidx);
1346         struct rb_root tmp_root = RB_ROOT;
1347         int nr_pcnt = 1;
1348         u64 h_sum = h->sum;
1349         size_t sizeof_src_line = sizeof(struct source_line);
1350
1351         if (perf_evsel__is_group_event(evsel)) {
1352                 for (i = 1; i < evsel->nr_members; i++) {
1353                         h = annotation__histogram(notes, evidx + i);
1354                         h_sum += h->sum;
1355                 }
1356                 nr_pcnt = evsel->nr_members;
1357                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1358         }
1359
1360         if (!h_sum)
1361                 return 0;
1362
1363         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1364         if (!notes->src->lines)
1365                 return -1;
1366
1367         start = map__rip_2objdump(map, sym->start);
1368
1369         for (i = 0; i < len; i++) {
1370                 u64 offset;
1371                 double percent_max = 0.0;
1372
1373                 src_line->nr_pcnt = nr_pcnt;
1374
1375                 for (k = 0; k < nr_pcnt; k++) {
1376                         h = annotation__histogram(notes, evidx + k);
1377                         src_line->samples[k].percent = 100.0 * h->addr[i] / h->sum;
1378
1379                         if (src_line->samples[k].percent > percent_max)
1380                                 percent_max = src_line->samples[k].percent;
1381                 }
1382
1383                 if (percent_max <= 0.5)
1384                         goto next;
1385
1386                 offset = start + i;
1387                 src_line->path = get_srcline(map->dso, offset, NULL, false);
1388                 insert_source_line(&tmp_root, src_line);
1389
1390         next:
1391                 src_line = (void *)src_line + sizeof_src_line;
1392         }
1393
1394         resort_source_line(root, &tmp_root);
1395         return 0;
1396 }
1397
1398 static void print_summary(struct rb_root *root, const char *filename)
1399 {
1400         struct source_line *src_line;
1401         struct rb_node *node;
1402
1403         printf("\nSorted summary for file %s\n", filename);
1404         printf("----------------------------------------------\n\n");
1405
1406         if (RB_EMPTY_ROOT(root)) {
1407                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1408                 return;
1409         }
1410
1411         node = rb_first(root);
1412         while (node) {
1413                 double percent, percent_max = 0.0;
1414                 const char *color;
1415                 char *path;
1416                 int i;
1417
1418                 src_line = rb_entry(node, struct source_line, node);
1419                 for (i = 0; i < src_line->nr_pcnt; i++) {
1420                         percent = src_line->samples[i].percent_sum;
1421                         color = get_percent_color(percent);
1422                         color_fprintf(stdout, color, " %7.2f", percent);
1423
1424                         if (percent > percent_max)
1425                                 percent_max = percent;
1426                 }
1427
1428                 path = src_line->path;
1429                 color = get_percent_color(percent_max);
1430                 color_fprintf(stdout, color, " %s\n", path);
1431
1432                 node = rb_next(node);
1433         }
1434 }
1435
1436 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1437 {
1438         struct annotation *notes = symbol__annotation(sym);
1439         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1440         u64 len = symbol__size(sym), offset;
1441
1442         for (offset = 0; offset < len; ++offset)
1443                 if (h->addr[offset] != 0)
1444                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1445                                sym->start + offset, h->addr[offset]);
1446         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1447 }
1448
1449 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1450                             struct perf_evsel *evsel, bool full_paths,
1451                             int min_pcnt, int max_lines, int context)
1452 {
1453         struct dso *dso = map->dso;
1454         char *filename;
1455         const char *d_filename;
1456         const char *evsel_name = perf_evsel__name(evsel);
1457         struct annotation *notes = symbol__annotation(sym);
1458         struct disasm_line *pos, *queue = NULL;
1459         u64 start = map__rip_2objdump(map, sym->start);
1460         int printed = 2, queue_len = 0;
1461         int more = 0;
1462         u64 len;
1463         int width = 8;
1464         int namelen, evsel_name_len, graph_dotted_len;
1465
1466         filename = strdup(dso->long_name);
1467         if (!filename)
1468                 return -ENOMEM;
1469
1470         if (full_paths)
1471                 d_filename = filename;
1472         else
1473                 d_filename = basename(filename);
1474
1475         len = symbol__size(sym);
1476         namelen = strlen(d_filename);
1477         evsel_name_len = strlen(evsel_name);
1478
1479         if (perf_evsel__is_group_event(evsel))
1480                 width *= evsel->nr_members;
1481
1482         printf(" %-*.*s|        Source code & Disassembly of %s for %s\n",
1483                width, width, "Percent", d_filename, evsel_name);
1484
1485         graph_dotted_len = width + namelen + evsel_name_len;
1486         printf("-%-*.*s-----------------------------------------\n",
1487                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1488
1489         if (verbose)
1490                 symbol__annotate_hits(sym, evsel);
1491
1492         list_for_each_entry(pos, &notes->src->source, node) {
1493                 if (context && queue == NULL) {
1494                         queue = pos;
1495                         queue_len = 0;
1496                 }
1497
1498                 switch (disasm_line__print(pos, sym, start, evsel, len,
1499                                             min_pcnt, printed, max_lines,
1500                                             queue)) {
1501                 case 0:
1502                         ++printed;
1503                         if (context) {
1504                                 printed += queue_len;
1505                                 queue = NULL;
1506                                 queue_len = 0;
1507                         }
1508                         break;
1509                 case 1:
1510                         /* filtered by max_lines */
1511                         ++more;
1512                         break;
1513                 case -1:
1514                 default:
1515                         /*
1516                          * Filtered by min_pcnt or non IP lines when
1517                          * context != 0
1518                          */
1519                         if (!context)
1520                                 break;
1521                         if (queue_len == context)
1522                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1523                         else
1524                                 ++queue_len;
1525                         break;
1526                 }
1527         }
1528
1529         free(filename);
1530
1531         return more;
1532 }
1533
1534 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1535 {
1536         struct annotation *notes = symbol__annotation(sym);
1537         struct sym_hist *h = annotation__histogram(notes, evidx);
1538
1539         memset(h, 0, notes->src->sizeof_sym_hist);
1540 }
1541
1542 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1543 {
1544         struct annotation *notes = symbol__annotation(sym);
1545         struct sym_hist *h = annotation__histogram(notes, evidx);
1546         int len = symbol__size(sym), offset;
1547
1548         h->sum = 0;
1549         for (offset = 0; offset < len; ++offset) {
1550                 h->addr[offset] = h->addr[offset] * 7 / 8;
1551                 h->sum += h->addr[offset];
1552         }
1553 }
1554
1555 void disasm__purge(struct list_head *head)
1556 {
1557         struct disasm_line *pos, *n;
1558
1559         list_for_each_entry_safe(pos, n, head, node) {
1560                 list_del(&pos->node);
1561                 disasm_line__free(pos);
1562         }
1563 }
1564
1565 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1566 {
1567         size_t printed;
1568
1569         if (dl->offset == -1)
1570                 return fprintf(fp, "%s\n", dl->line);
1571
1572         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1573
1574         if (dl->ops.raw[0] != '\0') {
1575                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1576                                    dl->ops.raw);
1577         }
1578
1579         return printed + fprintf(fp, "\n");
1580 }
1581
1582 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1583 {
1584         struct disasm_line *pos;
1585         size_t printed = 0;
1586
1587         list_for_each_entry(pos, head, node)
1588                 printed += disasm_line__fprintf(pos, fp);
1589
1590         return printed;
1591 }
1592
1593 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1594                          struct perf_evsel *evsel, bool print_lines,
1595                          bool full_paths, int min_pcnt, int max_lines)
1596 {
1597         struct dso *dso = map->dso;
1598         struct rb_root source_line = RB_ROOT;
1599         u64 len;
1600
1601         if (symbol__annotate(sym, map, 0) < 0)
1602                 return -1;
1603
1604         len = symbol__size(sym);
1605
1606         if (print_lines) {
1607                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1608                 print_summary(&source_line, dso->long_name);
1609         }
1610
1611         symbol__annotate_printf(sym, map, evsel, full_paths,
1612                                 min_pcnt, max_lines, 0);
1613         if (print_lines)
1614                 symbol__free_source_line(sym, len);
1615
1616         disasm__purge(&symbol__annotation(sym)->src->source);
1617
1618         return 0;
1619 }
1620
1621 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
1622 {
1623         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
1624 }
1625
1626 bool ui__has_annotation(void)
1627 {
1628         return use_browser == 1 && sort__has_sym;
1629 }