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 "build-id.h"
  12 #include "color.h"
  13 #include "cache.h"
  14 #include "symbol.h"
  15 #include "debug.h"
  16 #include "annotate.h"
  17 #include <pthread.h>
  18
  19 const char      *disassembler_style;
  20
  21 static struct ins *ins__find(const char *name);
  22 static int disasm_line__parse(char *line, char **namep, char **rawp);
  23
  24 static void ins__delete(struct ins_operands *ops)
  25 {
  26         free(ops->source.raw);
  27         free(ops->source.name);
  28         free(ops->target.raw);
  29         free(ops->target.name);
  30 }
  31
  32 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
  33                               struct ins_operands *ops)
  34 {
  35         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
  36 }
  37
  38 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
  39                   struct ins_operands *ops)
  40 {
  41         if (ins->ops->scnprintf)
  42                 return ins->ops->scnprintf(ins, bf, size, ops);
  43
  44         return ins__raw_scnprintf(ins, bf, size, ops);
  45 }
  46
  47 static int call__parse(struct ins_operands *ops)
  48 {
  49         char *endptr, *tok, *name;
  50
  51         ops->target.addr = strtoull(ops->raw, &endptr, 16);
  52
  53         name = strchr(endptr, '<');
  54         if (name == NULL)
  55                 goto indirect_call;
  56
  57         name++;
  58
  59         tok = strchr(name, '>');
  60         if (tok == NULL)
  61                 return -1;
  62
  63         *tok = '\0';
  64         ops->target.name = strdup(name);
  65         *tok = '>';
  66
  67         return ops->target.name == NULL ? -1 : 0;
  68
  69 indirect_call:
  70         tok = strchr(endptr, '(');
  71         if (tok != NULL) {
  72                 ops->target.addr = 0;
  73                 return 0;
  74         }
  75
  76         tok = strchr(endptr, '*');
  77         if (tok == NULL)
  78                 return -1;
  79
  80         ops->target.addr = strtoull(tok + 1, NULL, 16);
  81         return 0;
  82 }
  83
  84 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
  85                            struct ins_operands *ops)
  86 {
  87         if (ops->target.name)
  88                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
  89
  90         if (ops->target.addr == 0)
  91                 return ins__raw_scnprintf(ins, bf, size, ops);
  92
  93         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
  94 }
  95
  96 static struct ins_ops call_ops = {
  97         .parse     = call__parse,
  98         .scnprintf = call__scnprintf,
  99 };
 100
 101 bool ins__is_call(const struct ins *ins)
 102 {
 103         return ins->ops == &call_ops;
 104 }
 105
 106 static int jump__parse(struct ins_operands *ops)
 107 {
 108         const char *s = strchr(ops->raw, '+');
 109
 110         ops->target.addr = strtoll(ops->raw, NULL, 16);
 111
 112         if (s++ != NULL)
 113                 ops->target.offset = strtoll(s, NULL, 16);
 114         else
 115                 ops->target.offset = UINT64_MAX;
 116
 117         return 0;
 118 }
 119
 120 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 121                            struct ins_operands *ops)
 122 {
 123         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 124 }
 125
 126 static struct ins_ops jump_ops = {
 127         .parse     = jump__parse,
 128         .scnprintf = jump__scnprintf,
 129 };
 130
 131 bool ins__is_jump(const struct ins *ins)
 132 {
 133         return ins->ops == &jump_ops;
 134 }
 135
 136 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 137 {
 138         char *endptr, *name, *t;
 139
 140         if (strstr(raw, "(%rip)") == NULL)
 141                 return 0;
 142
 143         *addrp = strtoull(comment, &endptr, 16);
 144         name = strchr(endptr, '<');
 145         if (name == NULL)
 146                 return -1;
 147
 148         name++;
 149
 150         t = strchr(name, '>');
 151         if (t == NULL)
 152                 return 0;
 153
 154         *t = '\0';
 155         *namep = strdup(name);
 156         *t = '>';
 157
 158         return 0;
 159 }
 160
 161 static int lock__parse(struct ins_operands *ops)
 162 {
 163         char *name;
 164
 165         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 166         if (ops->locked.ops == NULL)
 167                 return 0;
 168
 169         if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
 170                 goto out_free_ops;
 171
 172         ops->locked.ins = ins__find(name);
 173         if (ops->locked.ins == NULL)
 174                 goto out_free_ops;
 175
 176         if (!ops->locked.ins->ops)
 177                 return 0;
 178
 179         if (ops->locked.ins->ops->parse)
 180                 ops->locked.ins->ops->parse(ops->locked.ops);
 181
 182         return 0;
 183
 184 out_free_ops:
 185         free(ops->locked.ops);
 186         ops->locked.ops = NULL;
 187         return 0;
 188 }
 189
 190 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 191                            struct ins_operands *ops)
 192 {
 193         int printed;
 194
 195         if (ops->locked.ins == NULL)
 196                 return ins__raw_scnprintf(ins, bf, size, ops);
 197
 198         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 199         return printed + ins__scnprintf(ops->locked.ins, bf + printed,
 200                                         size - printed, ops->locked.ops);
 201 }
 202
 203 static void lock__delete(struct ins_operands *ops)
 204 {
 205         free(ops->locked.ops);
 206         free(ops->target.raw);
 207         free(ops->target.name);
 208 }
 209
 210 static struct ins_ops lock_ops = {
 211         .free      = lock__delete,
 212         .parse     = lock__parse,
 213         .scnprintf = lock__scnprintf,
 214 };
 215
 216 static int mov__parse(struct ins_operands *ops)
 217 {
 218         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 219
 220         if (s == NULL)
 221                 return -1;
 222
 223         *s = '\0';
 224         ops->source.raw = strdup(ops->raw);
 225         *s = ',';
 226
 227         if (ops->source.raw == NULL)
 228                 return -1;
 229
 230         target = ++s;
 231
 232         while (s[0] != '\0' && !isspace(s[0]))
 233                 ++s;
 234         prev = *s;
 235         *s = '\0';
 236
 237         ops->target.raw = strdup(target);
 238         *s = prev;
 239
 240         if (ops->target.raw == NULL)
 241                 goto out_free_source;
 242
 243         comment = strchr(s, '#');
 244         if (comment == NULL)
 245                 return 0;
 246
 247         while (comment[0] != '\0' && isspace(comment[0]))
 248                 ++comment;
 249
 250         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 251         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 252
 253         return 0;
 254
 255 out_free_source:
 256         free(ops->source.raw);
 257         ops->source.raw = NULL;
 258         return -1;
 259 }
 260
 261 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 262                            struct ins_operands *ops)
 263 {
 264         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 265                          ops->source.name ?: ops->source.raw,
 266                          ops->target.name ?: ops->target.raw);
 267 }
 268
 269 static struct ins_ops mov_ops = {
 270         .parse     = mov__parse,
 271         .scnprintf = mov__scnprintf,
 272 };
 273
 274 static int dec__parse(struct ins_operands *ops)
 275 {
 276         char *target, *comment, *s, prev;
 277
 278         target = s = ops->raw;
 279
 280         while (s[0] != '\0' && !isspace(s[0]))
 281                 ++s;
 282         prev = *s;
 283         *s = '\0';
 284
 285         ops->target.raw = strdup(target);
 286         *s = prev;
 287
 288         if (ops->target.raw == NULL)
 289                 return -1;
 290
 291         comment = strchr(s, '#');
 292         if (comment == NULL)
 293                 return 0;
 294
 295         while (comment[0] != '\0' && isspace(comment[0]))
 296                 ++comment;
 297
 298         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 299
 300         return 0;
 301 }
 302
 303 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 304                            struct ins_operands *ops)
 305 {
 306         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 307                          ops->target.name ?: ops->target.raw);
 308 }
 309
 310 static struct ins_ops dec_ops = {
 311         .parse     = dec__parse,
 312         .scnprintf = dec__scnprintf,
 313 };
 314
 315 static int nop__scnprintf(struct ins *ins __used, char *bf, size_t size,
 316                           struct ins_operands *ops __used)
 317 {
 318         return scnprintf(bf, size, "%-6.6s", "nop");
 319 }
 320
 321 static struct ins_ops nop_ops = {
 322         .scnprintf = nop__scnprintf,
 323 };
 324
 325 /*
 326  * Must be sorted by name!
 327  */
 328 static struct ins instructions[] = {
 329         { .name = "add",   .ops  = &mov_ops, },
 330         { .name = "addl",  .ops  = &mov_ops, },
 331         { .name = "addq",  .ops  = &mov_ops, },
 332         { .name = "addw",  .ops  = &mov_ops, },
 333         { .name = "and",   .ops  = &mov_ops, },
 334         { .name = "bts",   .ops  = &mov_ops, },
 335         { .name = "call",  .ops  = &call_ops, },
 336         { .name = "callq", .ops  = &call_ops, },
 337         { .name = "cmp",   .ops  = &mov_ops, },
 338         { .name = "cmpb",  .ops  = &mov_ops, },
 339         { .name = "cmpl",  .ops  = &mov_ops, },
 340         { .name = "cmpq",  .ops  = &mov_ops, },
 341         { .name = "cmpw",  .ops  = &mov_ops, },
 342         { .name = "cmpxch", .ops  = &mov_ops, },
 343         { .name = "dec",   .ops  = &dec_ops, },
 344         { .name = "decl",  .ops  = &dec_ops, },
 345         { .name = "imul",  .ops  = &mov_ops, },
 346         { .name = "inc",   .ops  = &dec_ops, },
 347         { .name = "incl",  .ops  = &dec_ops, },
 348         { .name = "ja",    .ops  = &jump_ops, },
 349         { .name = "jae",   .ops  = &jump_ops, },
 350         { .name = "jb",    .ops  = &jump_ops, },
 351         { .name = "jbe",   .ops  = &jump_ops, },
 352         { .name = "jc",    .ops  = &jump_ops, },
 353         { .name = "jcxz",  .ops  = &jump_ops, },
 354         { .name = "je",    .ops  = &jump_ops, },
 355         { .name = "jecxz", .ops  = &jump_ops, },
 356         { .name = "jg",    .ops  = &jump_ops, },
 357         { .name = "jge",   .ops  = &jump_ops, },
 358         { .name = "jl",    .ops  = &jump_ops, },
 359         { .name = "jle",   .ops  = &jump_ops, },
 360         { .name = "jmp",   .ops  = &jump_ops, },
 361         { .name = "jmpq",  .ops  = &jump_ops, },
 362         { .name = "jna",   .ops  = &jump_ops, },
 363         { .name = "jnae",  .ops  = &jump_ops, },
 364         { .name = "jnb",   .ops  = &jump_ops, },
 365         { .name = "jnbe",  .ops  = &jump_ops, },
 366         { .name = "jnc",   .ops  = &jump_ops, },
 367         { .name = "jne",   .ops  = &jump_ops, },
 368         { .name = "jng",   .ops  = &jump_ops, },
 369         { .name = "jnge",  .ops  = &jump_ops, },
 370         { .name = "jnl",   .ops  = &jump_ops, },
 371         { .name = "jnle",  .ops  = &jump_ops, },
 372         { .name = "jno",   .ops  = &jump_ops, },
 373         { .name = "jnp",   .ops  = &jump_ops, },
 374         { .name = "jns",   .ops  = &jump_ops, },
 375         { .name = "jnz",   .ops  = &jump_ops, },
 376         { .name = "jo",    .ops  = &jump_ops, },
 377         { .name = "jp",    .ops  = &jump_ops, },
 378         { .name = "jpe",   .ops  = &jump_ops, },
 379         { .name = "jpo",   .ops  = &jump_ops, },
 380         { .name = "jrcxz", .ops  = &jump_ops, },
 381         { .name = "js",    .ops  = &jump_ops, },
 382         { .name = "jz",    .ops  = &jump_ops, },
 383         { .name = "lea",   .ops  = &mov_ops, },
 384         { .name = "lock",  .ops  = &lock_ops, },
 385         { .name = "mov",   .ops  = &mov_ops, },
 386         { .name = "movb",  .ops  = &mov_ops, },
 387         { .name = "movdqa",.ops  = &mov_ops, },
 388         { .name = "movl",  .ops  = &mov_ops, },
 389         { .name = "movq",  .ops  = &mov_ops, },
 390         { .name = "movslq", .ops  = &mov_ops, },
 391         { .name = "movzbl", .ops  = &mov_ops, },
 392         { .name = "movzwl", .ops  = &mov_ops, },
 393         { .name = "nop",   .ops  = &nop_ops, },
 394         { .name = "nopl",  .ops  = &nop_ops, },
 395         { .name = "nopw",  .ops  = &nop_ops, },
 396         { .name = "or",    .ops  = &mov_ops, },
 397         { .name = "orl",   .ops  = &mov_ops, },
 398         { .name = "test",  .ops  = &mov_ops, },
 399         { .name = "testb", .ops  = &mov_ops, },
 400         { .name = "testl", .ops  = &mov_ops, },
 401         { .name = "xadd",  .ops  = &mov_ops, },
 402 };
 403
 404 static int ins__cmp(const void *name, const void *insp)
 405 {
 406         const struct ins *ins = insp;
 407
 408         return strcmp(name, ins->name);
 409 }
 410
 411 static struct ins *ins__find(const char *name)
 412 {
 413         const int nmemb = ARRAY_SIZE(instructions);
 414
 415         return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
 416 }
 417
 418 int symbol__annotate_init(struct map *map __used, struct symbol *sym)
 419 {
 420         struct annotation *notes = symbol__annotation(sym);
 421         pthread_mutex_init(&notes->lock, NULL);
 422         return 0;
 423 }
 424
 425 int symbol__alloc_hist(struct symbol *sym)
 426 {
 427         struct annotation *notes = symbol__annotation(sym);
 428         const size_t size = symbol__size(sym);
 429         size_t sizeof_sym_hist;
 430
 431         /* Check for overflow when calculating sizeof_sym_hist */
 432         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 433                 return -1;
 434
 435         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 436
 437         /* Check for overflow in zalloc argument */
 438         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 439                                 / symbol_conf.nr_events)
 440                 return -1;
 441
 442         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 443         if (notes->src == NULL)
 444                 return -1;
 445         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 446         notes->src->nr_histograms   = symbol_conf.nr_events;
 447         INIT_LIST_HEAD(&notes->src->source);
 448         return 0;
 449 }
 450
 451 void symbol__annotate_zero_histograms(struct symbol *sym)
 452 {
 453         struct annotation *notes = symbol__annotation(sym);
 454
 455         pthread_mutex_lock(&notes->lock);
 456         if (notes->src != NULL)
 457                 memset(notes->src->histograms, 0,
 458                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 459         pthread_mutex_unlock(&notes->lock);
 460 }
 461
 462 int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 463                              int evidx, u64 addr)
 464 {
 465         unsigned offset;
 466         struct annotation *notes;
 467         struct sym_hist *h;
 468
 469         notes = symbol__annotation(sym);
 470         if (notes->src == NULL)
 471                 return -ENOMEM;
 472
 473         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 474
 475         if (addr < sym->start || addr > sym->end)
 476                 return -ERANGE;
 477
 478         offset = addr - sym->start;
 479         h = annotation__histogram(notes, evidx);
 480         h->sum++;
 481         h->addr[offset]++;
 482
 483         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 484                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 485                   addr, addr - sym->start, evidx, h->addr[offset]);
 486         return 0;
 487 }
 488
 489 static void disasm_line__init_ins(struct disasm_line *dl)
 490 {
 491         dl->ins = ins__find(dl->name);
 492
 493         if (dl->ins == NULL)
 494                 return;
 495
 496         if (!dl->ins->ops)
 497                 return;
 498
 499         if (dl->ins->ops->parse)
 500                 dl->ins->ops->parse(&dl->ops);
 501 }
 502
 503 static int disasm_line__parse(char *line, char **namep, char **rawp)
 504 {
 505         char *name = line, tmp;
 506
 507         while (isspace(name[0]))
 508                 ++name;
 509
 510         if (name[0] == '\0')
 511                 return -1;
 512
 513         *rawp = name + 1;
 514
 515         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 516                 ++*rawp;
 517
 518         tmp = (*rawp)[0];
 519         (*rawp)[0] = '\0';
 520         *namep = strdup(name);
 521
 522         if (*namep == NULL)
 523                 goto out_free_name;
 524
 525         (*rawp)[0] = tmp;
 526
 527         if ((*rawp)[0] != '\0') {
 528                 (*rawp)++;
 529                 while (isspace((*rawp)[0]))
 530                         ++(*rawp);
 531         }
 532
 533         return 0;
 534
 535 out_free_name:
 536         free(*namep);
 537         *namep = NULL;
 538         return -1;
 539 }
 540
 541 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
 542 {
 543         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 544
 545         if (dl != NULL) {
 546                 dl->offset = offset;
 547                 dl->line = strdup(line);
 548                 if (dl->line == NULL)
 549                         goto out_delete;
 550
 551                 if (offset != -1) {
 552                         if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 553                                 goto out_free_line;
 554
 555                         disasm_line__init_ins(dl);
 556                 }
 557         }
 558
 559         return dl;
 560
 561 out_free_line:
 562         free(dl->line);
 563 out_delete:
 564         free(dl);
 565         return NULL;
 566 }
 567
 568 void disasm_line__free(struct disasm_line *dl)
 569 {
 570         free(dl->line);
 571         free(dl->name);
 572         if (dl->ins && dl->ins->ops->free)
 573                 dl->ins->ops->free(&dl->ops);
 574         else
 575                 ins__delete(&dl->ops);
 576         free(dl);
 577 }
 578
 579 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 580 {
 581         if (raw || !dl->ins)
 582                 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
 583
 584         return ins__scnprintf(dl->ins, bf, size, &dl->ops);
 585 }
 586
 587 static void disasm__add(struct list_head *head, struct disasm_line *line)
 588 {
 589         list_add_tail(&line->node, head);
 590 }
 591
 592 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 593 {
 594         list_for_each_entry_continue(pos, head, node)
 595                 if (pos->offset >= 0)
 596                         return pos;
 597
 598         return NULL;
 599 }
 600
 601 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
 602                       int evidx, u64 len, int min_pcnt, int printed,
 603                       int max_lines, struct disasm_line *queue)
 604 {
 605         static const char *prev_line;
 606         static const char *prev_color;
 607
 608         if (dl->offset != -1) {
 609                 const char *path = NULL;
 610                 unsigned int hits = 0;
 611                 double percent = 0.0;
 612                 const char *color;
 613                 struct annotation *notes = symbol__annotation(sym);
 614                 struct source_line *src_line = notes->src->lines;
 615                 struct sym_hist *h = annotation__histogram(notes, evidx);
 616                 s64 offset = dl->offset;
 617                 const u64 addr = start + offset;
 618                 struct disasm_line *next;
 619
 620                 next = disasm__get_next_ip_line(&notes->src->source, dl);
 621
 622                 while (offset < (s64)len &&
 623                        (next == NULL || offset < next->offset)) {
 624                         if (src_line) {
 625                                 if (path == NULL)
 626                                         path = src_line[offset].path;
 627                                 percent += src_line[offset].percent;
 628                         } else
 629                                 hits += h->addr[offset];
 630
 631                         ++offset;
 632                 }
 633
 634                 if (src_line == NULL && h->sum)
 635                         percent = 100.0 * hits / h->sum;
 636
 637                 if (percent < min_pcnt)
 638                         return -1;
 639
 640                 if (max_lines && printed >= max_lines)
 641                         return 1;
 642
 643                 if (queue != NULL) {
 644                         list_for_each_entry_from(queue, &notes->src->source, node) {
 645                                 if (queue == dl)
 646                                         break;
 647                                 disasm_line__print(queue, sym, start, evidx, len,
 648                                                     0, 0, 1, NULL);
 649                         }
 650                 }
 651
 652                 color = get_percent_color(percent);
 653
 654                 /*
 655                  * Also color the filename and line if needed, with
 656                  * the same color than the percentage. Don't print it
 657                  * twice for close colored addr with the same filename:line
 658                  */
 659                 if (path) {
 660                         if (!prev_line || strcmp(prev_line, path)
 661                                        || color != prev_color) {
 662                                 color_fprintf(stdout, color, " %s", path);
 663                                 prev_line = path;
 664                                 prev_color = color;
 665                         }
 666                 }
 667
 668                 color_fprintf(stdout, color, " %7.2f", percent);
 669                 printf(" :      ");
 670                 color_fprintf(stdout, PERF_COLOR_MAGENTA, "  %" PRIx64 ":", addr);
 671                 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
 672         } else if (max_lines && printed >= max_lines)
 673                 return 1;
 674         else {
 675                 if (queue)
 676                         return -1;
 677
 678                 if (!*dl->line)
 679                         printf("         :\n");
 680                 else
 681                         printf("         :      %s\n", dl->line);
 682         }
 683
 684         return 0;
 685 }
 686
 687 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 688                                       FILE *file, size_t privsize)
 689 {
 690         struct annotation *notes = symbol__annotation(sym);
 691         struct disasm_line *dl;
 692         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
 693         size_t line_len;
 694         s64 line_ip, offset = -1;
 695
 696         if (getline(&line, &line_len, file) < 0)
 697                 return -1;
 698
 699         if (!line)
 700                 return -1;
 701
 702         while (line_len != 0 && isspace(line[line_len - 1]))
 703                 line[--line_len] = '\0';
 704
 705         c = strchr(line, '\n');
 706         if (c)
 707                 *c = 0;
 708
 709         line_ip = -1;
 710         parsed_line = line;
 711
 712         /*
 713          * Strip leading spaces:
 714          */
 715         tmp = line;
 716         while (*tmp) {
 717                 if (*tmp != ' ')
 718                         break;
 719                 tmp++;
 720         }
 721
 722         if (*tmp) {
 723                 /*
 724                  * Parse hexa addresses followed by ':'
 725                  */
 726                 line_ip = strtoull(tmp, &tmp2, 16);
 727                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
 728                         line_ip = -1;
 729         }
 730
 731         if (line_ip != -1) {
 732                 u64 start = map__rip_2objdump(map, sym->start),
 733                     end = map__rip_2objdump(map, sym->end);
 734
 735                 offset = line_ip - start;
 736                 if (offset < 0 || (u64)line_ip > end)
 737                         offset = -1;
 738                 else
 739                         parsed_line = tmp2 + 1;
 740         }
 741
 742         dl = disasm_line__new(offset, parsed_line, privsize);
 743         free(line);
 744
 745         if (dl == NULL)
 746                 return -1;
 747
 748         disasm__add(&notes->src->source, dl);
 749
 750         return 0;
 751 }
 752
 753 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
 754 {
 755         struct dso *dso = map->dso;
 756         char *filename = dso__build_id_filename(dso, NULL, 0);
 757         bool free_filename = true;
 758         char command[PATH_MAX * 2];
 759         FILE *file;
 760         int err = 0;
 761         char symfs_filename[PATH_MAX];
 762
 763         if (filename) {
 764                 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
 765                          symbol_conf.symfs, filename);
 766         }
 767
 768         if (filename == NULL) {
 769                 if (dso->has_build_id) {
 770                         pr_err("Can't annotate %s: not enough memory\n",
 771                                sym->name);
 772                         return -ENOMEM;
 773                 }
 774                 goto fallback;
 775         } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
 776                    strstr(command, "[kernel.kallsyms]") ||
 777                    access(symfs_filename, R_OK)) {
 778                 free(filename);
 779 fallback:
 780                 /*
 781                  * If we don't have build-ids or the build-id file isn't in the
 782                  * cache, or is just a kallsyms file, well, lets hope that this
 783                  * DSO is the same as when 'perf record' ran.
 784                  */
 785                 filename = dso->long_name;
 786                 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
 787                          symbol_conf.symfs, filename);
 788                 free_filename = false;
 789         }
 790
 791         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) {
 792                 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
 793                 char *build_id_msg = NULL;
 794
 795                 if (dso->annotate_warned)
 796                         goto out_free_filename;
 797
 798                 if (dso->has_build_id) {
 799                         build_id__sprintf(dso->build_id,
 800                                           sizeof(dso->build_id), bf + 15);
 801                         build_id_msg = bf;
 802                 }
 803                 err = -ENOENT;
 804                 dso->annotate_warned = 1;
 805                 pr_err("Can't annotate %s:\n\n"
 806                        "No vmlinux file%s\nwas found in the path.\n\n"
 807                        "Please use:\n\n"
 808                        "  perf buildid-cache -av vmlinux\n\n"
 809                        "or:\n\n"
 810                        "  --vmlinux vmlinux\n",
 811                        sym->name, build_id_msg ?: "");
 812                 goto out_free_filename;
 813         }
 814
 815         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
 816                  filename, sym->name, map->unmap_ip(map, sym->start),
 817                  map->unmap_ip(map, sym->end));
 818
 819         pr_debug("annotating [%p] %30s : [%p] %30s\n",
 820                  dso, dso->long_name, sym, sym->name);
 821
 822         snprintf(command, sizeof(command),
 823                  "objdump %s%s --start-address=0x%016" PRIx64
 824                  " --stop-address=0x%016" PRIx64
 825                  " -d %s %s -C %s|grep -v %s|expand",
 826                  disassembler_style ? "-M " : "",
 827                  disassembler_style ? disassembler_style : "",
 828                  map__rip_2objdump(map, sym->start),
 829                  map__rip_2objdump(map, sym->end+1),
 830                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
 831                  symbol_conf.annotate_src ? "-S" : "",
 832                  symfs_filename, filename);
 833
 834         pr_debug("Executing: %s\n", command);
 835
 836         file = popen(command, "r");
 837         if (!file)
 838                 goto out_free_filename;
 839
 840         while (!feof(file))
 841                 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)
 842                         break;
 843
 844         pclose(file);
 845 out_free_filename:
 846         if (free_filename)
 847                 free(filename);
 848         return err;
 849 }
 850
 851 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
 852 {
 853         struct source_line *iter;
 854         struct rb_node **p = &root->rb_node;
 855         struct rb_node *parent = NULL;
 856
 857         while (*p != NULL) {
 858                 parent = *p;
 859                 iter = rb_entry(parent, struct source_line, node);
 860
 861                 if (src_line->percent > iter->percent)
 862                         p = &(*p)->rb_left;
 863                 else
 864                         p = &(*p)->rb_right;
 865         }
 866
 867         rb_link_node(&src_line->node, parent, p);
 868         rb_insert_color(&src_line->node, root);
 869 }
 870
 871 static void symbol__free_source_line(struct symbol *sym, int len)
 872 {
 873         struct annotation *notes = symbol__annotation(sym);
 874         struct source_line *src_line = notes->src->lines;
 875         int i;
 876
 877         for (i = 0; i < len; i++)
 878                 free(src_line[i].path);
 879
 880         free(src_line);
 881         notes->src->lines = NULL;
 882 }
 883
 884 /* Get the filename:line for the colored entries */
 885 static int symbol__get_source_line(struct symbol *sym, struct map *map,
 886                                    int evidx, struct rb_root *root, int len,
 887                                    const char *filename)
 888 {
 889         u64 start;
 890         int i;
 891         char cmd[PATH_MAX * 2];
 892         struct source_line *src_line;
 893         struct annotation *notes = symbol__annotation(sym);
 894         struct sym_hist *h = annotation__histogram(notes, evidx);
 895
 896         if (!h->sum)
 897                 return 0;
 898
 899         src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
 900         if (!notes->src->lines)
 901                 return -1;
 902
 903         start = map__rip_2objdump(map, sym->start);
 904
 905         for (i = 0; i < len; i++) {
 906                 char *path = NULL;
 907                 size_t line_len;
 908                 u64 offset;
 909                 FILE *fp;
 910
 911                 src_line[i].percent = 100.0 * h->addr[i] / h->sum;
 912                 if (src_line[i].percent <= 0.5)
 913                         continue;
 914
 915                 offset = start + i;
 916                 sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
 917                 fp = popen(cmd, "r");
 918                 if (!fp)
 919                         continue;
 920
 921                 if (getline(&path, &line_len, fp) < 0 || !line_len)
 922                         goto next;
 923
 924                 src_line[i].path = malloc(sizeof(char) * line_len + 1);
 925                 if (!src_line[i].path)
 926                         goto next;
 927
 928                 strcpy(src_line[i].path, path);
 929                 insert_source_line(root, &src_line[i]);
 930
 931         next:
 932                 pclose(fp);
 933         }
 934
 935         return 0;
 936 }
 937
 938 static void print_summary(struct rb_root *root, const char *filename)
 939 {
 940         struct source_line *src_line;
 941         struct rb_node *node;
 942
 943         printf("\nSorted summary for file %s\n", filename);
 944         printf("----------------------------------------------\n\n");
 945
 946         if (RB_EMPTY_ROOT(root)) {
 947                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
 948                 return;
 949         }
 950
 951         node = rb_first(root);
 952         while (node) {
 953                 double percent;
 954                 const char *color;
 955                 char *path;
 956
 957                 src_line = rb_entry(node, struct source_line, node);
 958                 percent = src_line->percent;
 959                 color = get_percent_color(percent);
 960                 path = src_line->path;
 961
 962                 color_fprintf(stdout, color, " %7.2f %s", percent, path);
 963                 node = rb_next(node);
 964         }
 965 }
 966
 967 static void symbol__annotate_hits(struct symbol *sym, int evidx)
 968 {
 969         struct annotation *notes = symbol__annotation(sym);
 970         struct sym_hist *h = annotation__histogram(notes, evidx);
 971         u64 len = symbol__size(sym), offset;
 972
 973         for (offset = 0; offset < len; ++offset)
 974                 if (h->addr[offset] != 0)
 975                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
 976                                sym->start + offset, h->addr[offset]);
 977         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
 978 }
 979
 980 int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,
 981                             bool full_paths, int min_pcnt, int max_lines,
 982                             int context)
 983 {
 984         struct dso *dso = map->dso;
 985         const char *filename = dso->long_name, *d_filename;
 986         struct annotation *notes = symbol__annotation(sym);
 987         struct disasm_line *pos, *queue = NULL;
 988         u64 start = map__rip_2objdump(map, sym->start);
 989         int printed = 2, queue_len = 0;
 990         int more = 0;
 991         u64 len;
 992
 993         if (full_paths)
 994                 d_filename = filename;
 995         else
 996                 d_filename = basename(filename);
 997
 998         len = symbol__size(sym);
 999
1000         printf(" Percent |      Source code & Disassembly of %s\n", d_filename);
1001         printf("------------------------------------------------\n");
1002
1003         if (verbose)
1004                 symbol__annotate_hits(sym, evidx);
1005
1006         list_for_each_entry(pos, &notes->src->source, node) {
1007                 if (context && queue == NULL) {
1008                         queue = pos;
1009                         queue_len = 0;
1010                 }
1011
1012                 switch (disasm_line__print(pos, sym, start, evidx, len,
1013                                             min_pcnt, printed, max_lines,
1014                                             queue)) {
1015                 case 0:
1016                         ++printed;
1017                         if (context) {
1018                                 printed += queue_len;
1019                                 queue = NULL;
1020                                 queue_len = 0;
1021                         }
1022                         break;
1023                 case 1:
1024                         /* filtered by max_lines */
1025                         ++more;
1026                         break;
1027                 case -1:
1028                 default:
1029                         /*
1030                          * Filtered by min_pcnt or non IP lines when
1031                          * context != 0
1032                          */
1033                         if (!context)
1034                                 break;
1035                         if (queue_len == context)
1036                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1037                         else
1038                                 ++queue_len;
1039                         break;
1040                 }
1041         }
1042
1043         return more;
1044 }
1045
1046 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1047 {
1048         struct annotation *notes = symbol__annotation(sym);
1049         struct sym_hist *h = annotation__histogram(notes, evidx);
1050
1051         memset(h, 0, notes->src->sizeof_sym_hist);
1052 }
1053
1054 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1055 {
1056         struct annotation *notes = symbol__annotation(sym);
1057         struct sym_hist *h = annotation__histogram(notes, evidx);
1058         int len = symbol__size(sym), offset;
1059
1060         h->sum = 0;
1061         for (offset = 0; offset < len; ++offset) {
1062                 h->addr[offset] = h->addr[offset] * 7 / 8;
1063                 h->sum += h->addr[offset];
1064         }
1065 }
1066
1067 void disasm__purge(struct list_head *head)
1068 {
1069         struct disasm_line *pos, *n;
1070
1071         list_for_each_entry_safe(pos, n, head, node) {
1072                 list_del(&pos->node);
1073                 disasm_line__free(pos);
1074         }
1075 }
1076
1077 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1078 {
1079         size_t printed;
1080
1081         if (dl->offset == -1)
1082                 return fprintf(fp, "%s\n", dl->line);
1083
1084         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1085
1086         if (dl->ops.raw[0] != '\0') {
1087                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1088                                    dl->ops.raw);
1089         }
1090
1091         return printed + fprintf(fp, "\n");
1092 }
1093
1094 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1095 {
1096         struct disasm_line *pos;
1097         size_t printed = 0;
1098
1099         list_for_each_entry(pos, head, node)
1100                 printed += disasm_line__fprintf(pos, fp);
1101
1102         return printed;
1103 }
1104
1105 int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
1106                          bool print_lines, bool full_paths, int min_pcnt,
1107                          int max_lines)
1108 {
1109         struct dso *dso = map->dso;
1110         const char *filename = dso->long_name;
1111         struct rb_root source_line = RB_ROOT;
1112         u64 len;
1113
1114         if (symbol__annotate(sym, map, 0) < 0)
1115                 return -1;
1116
1117         len = symbol__size(sym);
1118
1119         if (print_lines) {
1120                 symbol__get_source_line(sym, map, evidx, &source_line,
1121                                         len, filename);
1122                 print_summary(&source_line, filename);
1123         }
1124
1125         symbol__annotate_printf(sym, map, evidx, full_paths,
1126                                 min_pcnt, max_lines, 0);
1127         if (print_lines)
1128                 symbol__free_source_line(sym, len);
1129
1130         disasm__purge(&symbol__annotation(sym)->src->source);
1131
1132         return 0;
1133 }