Pileus Git - ~andy/linux/blob - 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 const char      *objdump_path;
  21
  22 static struct ins *ins__find(const char *name);
  23 static int disasm_line__parse(char *line, char **namep, char **rawp);
  24
  25 static void ins__delete(struct ins_operands *ops)
  26 {
  27         free(ops->source.raw);
  28         free(ops->source.name);
  29         free(ops->target.raw);
  30         free(ops->target.name);
  31 }
  32
  33 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
  34                               struct ins_operands *ops)
  35 {
  36         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
  37 }
  38
  39 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
  40                   struct ins_operands *ops)
  41 {
  42         if (ins->ops->scnprintf)
  43                 return ins->ops->scnprintf(ins, bf, size, ops);
  44
  45         return ins__raw_scnprintf(ins, bf, size, ops);
  46 }
  47
  48 static int call__parse(struct ins_operands *ops)
  49 {
  50         char *endptr, *tok, *name;
  51
  52         ops->target.addr = strtoull(ops->raw, &endptr, 16);
  53
  54         name = strchr(endptr, '<');
  55         if (name == NULL)
  56                 goto indirect_call;
  57
  58         name++;
  59
  60         tok = strchr(name, '>');
  61         if (tok == NULL)
  62                 return -1;
  63
  64         *tok = '\0';
  65         ops->target.name = strdup(name);
  66         *tok = '>';
  67
  68         return ops->target.name == NULL ? -1 : 0;
  69
  70 indirect_call:
  71         tok = strchr(endptr, '(');
  72         if (tok != NULL) {
  73                 ops->target.addr = 0;
  74                 return 0;
  75         }
  76
  77         tok = strchr(endptr, '*');
  78         if (tok == NULL)
  79                 return -1;
  80
  81         ops->target.addr = strtoull(tok + 1, NULL, 16);
  82         return 0;
  83 }
  84
  85 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
  86                            struct ins_operands *ops)
  87 {
  88         if (ops->target.name)
  89                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
  90
  91         if (ops->target.addr == 0)
  92                 return ins__raw_scnprintf(ins, bf, size, ops);
  93
  94         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
  95 }
  96
  97 static struct ins_ops call_ops = {
  98         .parse     = call__parse,
  99         .scnprintf = call__scnprintf,
 100 };
 101
 102 bool ins__is_call(const struct ins *ins)
 103 {
 104         return ins->ops == &call_ops;
 105 }
 106
 107 static int jump__parse(struct ins_operands *ops)
 108 {
 109         const char *s = strchr(ops->raw, '+');
 110
 111         ops->target.addr = strtoll(ops->raw, NULL, 16);
 112
 113         if (s++ != NULL)
 114                 ops->target.offset = strtoll(s, NULL, 16);
 115         else
 116                 ops->target.offset = UINT64_MAX;
 117
 118         return 0;
 119 }
 120
 121 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 122                            struct ins_operands *ops)
 123 {
 124         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 125 }
 126
 127 static struct ins_ops jump_ops = {
 128         .parse     = jump__parse,
 129         .scnprintf = jump__scnprintf,
 130 };
 131
 132 bool ins__is_jump(const struct ins *ins)
 133 {
 134         return ins->ops == &jump_ops;
 135 }
 136
 137 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 138 {
 139         char *endptr, *name, *t;
 140
 141         if (strstr(raw, "(%rip)") == NULL)
 142                 return 0;
 143
 144         *addrp = strtoull(comment, &endptr, 16);
 145         name = strchr(endptr, '<');
 146         if (name == NULL)
 147                 return -1;
 148
 149         name++;
 150
 151         t = strchr(name, '>');
 152         if (t == NULL)
 153                 return 0;
 154
 155         *t = '\0';
 156         *namep = strdup(name);
 157         *t = '>';
 158
 159         return 0;
 160 }
 161
 162 static int lock__parse(struct ins_operands *ops)
 163 {
 164         char *name;
 165
 166         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 167         if (ops->locked.ops == NULL)
 168                 return 0;
 169
 170         if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
 171                 goto out_free_ops;
 172
 173         ops->locked.ins = ins__find(name);
 174         if (ops->locked.ins == NULL)
 175                 goto out_free_ops;
 176
 177         if (!ops->locked.ins->ops)
 178                 return 0;
 179
 180         if (ops->locked.ins->ops->parse)
 181                 ops->locked.ins->ops->parse(ops->locked.ops);
 182
 183         return 0;
 184
 185 out_free_ops:
 186         free(ops->locked.ops);
 187         ops->locked.ops = NULL;
 188         return 0;
 189 }
 190
 191 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 192                            struct ins_operands *ops)
 193 {
 194         int printed;
 195
 196         if (ops->locked.ins == NULL)
 197                 return ins__raw_scnprintf(ins, bf, size, ops);
 198
 199         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 200         return printed + ins__scnprintf(ops->locked.ins, bf + printed,
 201                                         size - printed, ops->locked.ops);
 202 }
 203
 204 static void lock__delete(struct ins_operands *ops)
 205 {
 206         free(ops->locked.ops);
 207         free(ops->target.raw);
 208         free(ops->target.name);
 209 }
 210
 211 static struct ins_ops lock_ops = {
 212         .free      = lock__delete,
 213         .parse     = lock__parse,
 214         .scnprintf = lock__scnprintf,
 215 };
 216
 217 static int mov__parse(struct ins_operands *ops)
 218 {
 219         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 220
 221         if (s == NULL)
 222                 return -1;
 223
 224         *s = '\0';
 225         ops->source.raw = strdup(ops->raw);
 226         *s = ',';
 227
 228         if (ops->source.raw == NULL)
 229                 return -1;
 230
 231         target = ++s;
 232
 233         while (s[0] != '\0' && !isspace(s[0]))
 234                 ++s;
 235         prev = *s;
 236         *s = '\0';
 237
 238         ops->target.raw = strdup(target);
 239         *s = prev;
 240
 241         if (ops->target.raw == NULL)
 242                 goto out_free_source;
 243
 244         comment = strchr(s, '#');
 245         if (comment == NULL)
 246                 return 0;
 247
 248         while (comment[0] != '\0' && isspace(comment[0]))
 249                 ++comment;
 250
 251         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 252         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 253
 254         return 0;
 255
 256 out_free_source:
 257         free(ops->source.raw);
 258         ops->source.raw = NULL;
 259         return -1;
 260 }
 261
 262 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 263                            struct ins_operands *ops)
 264 {
 265         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 266                          ops->source.name ?: ops->source.raw,
 267                          ops->target.name ?: ops->target.raw);
 268 }
 269
 270 static struct ins_ops mov_ops = {
 271         .parse     = mov__parse,
 272         .scnprintf = mov__scnprintf,
 273 };
 274
 275 static int dec__parse(struct ins_operands *ops)
 276 {
 277         char *target, *comment, *s, prev;
 278
 279         target = s = ops->raw;
 280
 281         while (s[0] != '\0' && !isspace(s[0]))
 282                 ++s;
 283         prev = *s;
 284         *s = '\0';
 285
 286         ops->target.raw = strdup(target);
 287         *s = prev;
 288
 289         if (ops->target.raw == NULL)
 290                 return -1;
 291
 292         comment = strchr(s, '#');
 293         if (comment == NULL)
 294                 return 0;
 295
 296         while (comment[0] != '\0' && isspace(comment[0]))
 297                 ++comment;
 298
 299         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 300
 301         return 0;
 302 }
 303
 304 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 305                            struct ins_operands *ops)
 306 {
 307         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 308                          ops->target.name ?: ops->target.raw);
 309 }
 310
 311 static struct ins_ops dec_ops = {
 312         .parse     = dec__parse,
 313         .scnprintf = dec__scnprintf,
 314 };
 315
 316 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 317                           struct ins_operands *ops __maybe_unused)
 318 {
 319         return scnprintf(bf, size, "%-6.6s", "nop");
 320 }
 321
 322 static struct ins_ops nop_ops = {
 323         .scnprintf = nop__scnprintf,
 324 };
 325
 326 /*
 327  * Must be sorted by name!
 328  */
 329 static struct ins instructions[] = {
 330         { .name = "add",   .ops  = &mov_ops, },
 331         { .name = "addl",  .ops  = &mov_ops, },
 332         { .name = "addq",  .ops  = &mov_ops, },
 333         { .name = "addw",  .ops  = &mov_ops, },
 334         { .name = "and",   .ops  = &mov_ops, },
 335         { .name = "bts",   .ops  = &mov_ops, },
 336         { .name = "call",  .ops  = &call_ops, },
 337         { .name = "callq", .ops  = &call_ops, },
 338         { .name = "cmp",   .ops  = &mov_ops, },
 339         { .name = "cmpb",  .ops  = &mov_ops, },
 340         { .name = "cmpl",  .ops  = &mov_ops, },
 341         { .name = "cmpq",  .ops  = &mov_ops, },
 342         { .name = "cmpw",  .ops  = &mov_ops, },
 343         { .name = "cmpxch", .ops  = &mov_ops, },
 344         { .name = "dec",   .ops  = &dec_ops, },
 345         { .name = "decl",  .ops  = &dec_ops, },
 346         { .name = "imul",  .ops  = &mov_ops, },
 347         { .name = "inc",   .ops  = &dec_ops, },
 348         { .name = "incl",  .ops  = &dec_ops, },
 349         { .name = "ja",    .ops  = &jump_ops, },
 350         { .name = "jae",   .ops  = &jump_ops, },
 351         { .name = "jb",    .ops  = &jump_ops, },
 352         { .name = "jbe",   .ops  = &jump_ops, },
 353         { .name = "jc",    .ops  = &jump_ops, },
 354         { .name = "jcxz",  .ops  = &jump_ops, },
 355         { .name = "je",    .ops  = &jump_ops, },
 356         { .name = "jecxz", .ops  = &jump_ops, },
 357         { .name = "jg",    .ops  = &jump_ops, },
 358         { .name = "jge",   .ops  = &jump_ops, },
 359         { .name = "jl",    .ops  = &jump_ops, },
 360         { .name = "jle",   .ops  = &jump_ops, },
 361         { .name = "jmp",   .ops  = &jump_ops, },
 362         { .name = "jmpq",  .ops  = &jump_ops, },
 363         { .name = "jna",   .ops  = &jump_ops, },
 364         { .name = "jnae",  .ops  = &jump_ops, },
 365         { .name = "jnb",   .ops  = &jump_ops, },
 366         { .name = "jnbe",  .ops  = &jump_ops, },
 367         { .name = "jnc",   .ops  = &jump_ops, },
 368         { .name = "jne",   .ops  = &jump_ops, },
 369         { .name = "jng",   .ops  = &jump_ops, },
 370         { .name = "jnge",  .ops  = &jump_ops, },
 371         { .name = "jnl",   .ops  = &jump_ops, },
 372         { .name = "jnle",  .ops  = &jump_ops, },
 373         { .name = "jno",   .ops  = &jump_ops, },
 374         { .name = "jnp",   .ops  = &jump_ops, },
 375         { .name = "jns",   .ops  = &jump_ops, },
 376         { .name = "jnz",   .ops  = &jump_ops, },
 377         { .name = "jo",    .ops  = &jump_ops, },
 378         { .name = "jp",    .ops  = &jump_ops, },
 379         { .name = "jpe",   .ops  = &jump_ops, },
 380         { .name = "jpo",   .ops  = &jump_ops, },
 381         { .name = "jrcxz", .ops  = &jump_ops, },
 382         { .name = "js",    .ops  = &jump_ops, },
 383         { .name = "jz",    .ops  = &jump_ops, },
 384         { .name = "lea",   .ops  = &mov_ops, },
 385         { .name = "lock",  .ops  = &lock_ops, },
 386         { .name = "mov",   .ops  = &mov_ops, },
 387         { .name = "movb",  .ops  = &mov_ops, },
 388         { .name = "movdqa",.ops  = &mov_ops, },
 389         { .name = "movl",  .ops  = &mov_ops, },
 390         { .name = "movq",  .ops  = &mov_ops, },
 391         { .name = "movslq", .ops  = &mov_ops, },
 392         { .name = "movzbl", .ops  = &mov_ops, },
 393         { .name = "movzwl", .ops  = &mov_ops, },
 394         { .name = "nop",   .ops  = &nop_ops, },
 395         { .name = "nopl",  .ops  = &nop_ops, },
 396         { .name = "nopw",  .ops  = &nop_ops, },
 397         { .name = "or",    .ops  = &mov_ops, },
 398         { .name = "orl",   .ops  = &mov_ops, },
 399         { .name = "test",  .ops  = &mov_ops, },
 400         { .name = "testb", .ops  = &mov_ops, },
 401         { .name = "testl", .ops  = &mov_ops, },
 402         { .name = "xadd",  .ops  = &mov_ops, },
 403 };
 404
 405 static int ins__cmp(const void *name, const void *insp)
 406 {
 407         const struct ins *ins = insp;
 408
 409         return strcmp(name, ins->name);
 410 }
 411
 412 static struct ins *ins__find(const char *name)
 413 {
 414         const int nmemb = ARRAY_SIZE(instructions);
 415
 416         return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
 417 }
 418
 419 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
 420 {
 421         struct annotation *notes = symbol__annotation(sym);
 422         pthread_mutex_init(&notes->lock, NULL);
 423         return 0;
 424 }
 425
 426 int symbol__alloc_hist(struct symbol *sym)
 427 {
 428         struct annotation *notes = symbol__annotation(sym);
 429         const size_t size = symbol__size(sym);
 430         size_t sizeof_sym_hist;
 431
 432         /* Check for overflow when calculating sizeof_sym_hist */
 433         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 434                 return -1;
 435
 436         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 437
 438         /* Check for overflow in zalloc argument */
 439         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 440                                 / symbol_conf.nr_events)
 441                 return -1;
 442
 443         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 444         if (notes->src == NULL)
 445                 return -1;
 446         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 447         notes->src->nr_histograms   = symbol_conf.nr_events;
 448         INIT_LIST_HEAD(&notes->src->source);
 449         return 0;
 450 }
 451
 452 void symbol__annotate_zero_histograms(struct symbol *sym)
 453 {
 454         struct annotation *notes = symbol__annotation(sym);
 455
 456         pthread_mutex_lock(&notes->lock);
 457         if (notes->src != NULL)
 458                 memset(notes->src->histograms, 0,
 459                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 460         pthread_mutex_unlock(&notes->lock);
 461 }
 462
 463 int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 464                              int evidx, u64 addr)
 465 {
 466         unsigned offset;
 467         struct annotation *notes;
 468         struct sym_hist *h;
 469
 470         notes = symbol__annotation(sym);
 471         if (notes->src == NULL)
 472                 return -ENOMEM;
 473
 474         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 475
 476         if (addr < sym->start || addr > sym->end)
 477                 return -ERANGE;
 478
 479         offset = addr - sym->start;
 480         h = annotation__histogram(notes, evidx);
 481         h->sum++;
 482         h->addr[offset]++;
 483
 484         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 485                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 486                   addr, addr - sym->start, evidx, h->addr[offset]);
 487         return 0;
 488 }
 489
 490 static void disasm_line__init_ins(struct disasm_line *dl)
 491 {
 492         dl->ins = ins__find(dl->name);
 493
 494         if (dl->ins == NULL)
 495                 return;
 496
 497         if (!dl->ins->ops)
 498                 return;
 499
 500         if (dl->ins->ops->parse)
 501                 dl->ins->ops->parse(&dl->ops);
 502 }
 503
 504 static int disasm_line__parse(char *line, char **namep, char **rawp)
 505 {
 506         char *name = line, tmp;
 507
 508         while (isspace(name[0]))
 509                 ++name;
 510
 511         if (name[0] == '\0')
 512                 return -1;
 513
 514         *rawp = name + 1;
 515
 516         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 517                 ++*rawp;
 518
 519         tmp = (*rawp)[0];
 520         (*rawp)[0] = '\0';
 521         *namep = strdup(name);
 522
 523         if (*namep == NULL)
 524                 goto out_free_name;
 525
 526         (*rawp)[0] = tmp;
 527
 528         if ((*rawp)[0] != '\0') {
 529                 (*rawp)++;
 530                 while (isspace((*rawp)[0]))
 531                         ++(*rawp);
 532         }
 533
 534         return 0;
 535
 536 out_free_name:
 537         free(*namep);
 538         *namep = NULL;
 539         return -1;
 540 }
 541
 542 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
 543 {
 544         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 545
 546         if (dl != NULL) {
 547                 dl->offset = offset;
 548                 dl->line = strdup(line);
 549                 if (dl->line == NULL)
 550                         goto out_delete;
 551
 552                 if (offset != -1) {
 553                         if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 554                                 goto out_free_line;
 555
 556                         disasm_line__init_ins(dl);
 557                 }
 558         }
 559
 560         return dl;
 561
 562 out_free_line:
 563         free(dl->line);
 564 out_delete:
 565         free(dl);
 566         return NULL;
 567 }
 568
 569 void disasm_line__free(struct disasm_line *dl)
 570 {
 571         free(dl->line);
 572         free(dl->name);
 573         if (dl->ins && dl->ins->ops->free)
 574                 dl->ins->ops->free(&dl->ops);
 575         else
 576                 ins__delete(&dl->ops);
 577         free(dl);
 578 }
 579
 580 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 581 {
 582         if (raw || !dl->ins)
 583                 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
 584
 585         return ins__scnprintf(dl->ins, bf, size, &dl->ops);
 586 }
 587
 588 static void disasm__add(struct list_head *head, struct disasm_line *line)
 589 {
 590         list_add_tail(&line->node, head);
 591 }
 592
 593 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 594 {
 595         list_for_each_entry_continue(pos, head, node)
 596                 if (pos->offset >= 0)
 597                         return pos;
 598
 599         return NULL;
 600 }
 601
 602 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
 603                       int evidx, u64 len, int min_pcnt, int printed,
 604                       int max_lines, struct disasm_line *queue)
 605 {
 606         static const char *prev_line;
 607         static const char *prev_color;
 608
 609         if (dl->offset != -1) {
 610                 const char *path = NULL;
 611                 unsigned int hits = 0;
 612                 double percent = 0.0;
 613                 const char *color;
 614                 struct annotation *notes = symbol__annotation(sym);
 615                 struct source_line *src_line = notes->src->lines;
 616                 struct sym_hist *h = annotation__histogram(notes, evidx);
 617                 s64 offset = dl->offset;
 618                 const u64 addr = start + offset;
 619                 struct disasm_line *next;
 620
 621                 next = disasm__get_next_ip_line(&notes->src->source, dl);
 622
 623                 while (offset < (s64)len &&
 624                        (next == NULL || offset < next->offset)) {
 625                         if (src_line) {
 626                                 if (path == NULL)
 627                                         path = src_line[offset].path;
 628                                 percent += src_line[offset].percent;
 629                         } else
 630                                 hits += h->addr[offset];
 631
 632                         ++offset;
 633                 }
 634
 635                 if (src_line == NULL && h->sum)
 636                         percent = 100.0 * hits / h->sum;
 637
 638                 if (percent < min_pcnt)
 639                         return -1;
 640
 641                 if (max_lines && printed >= max_lines)
 642                         return 1;
 643
 644                 if (queue != NULL) {
 645                         list_for_each_entry_from(queue, &notes->src->source, node) {
 646                                 if (queue == dl)
 647                                         break;
 648                                 disasm_line__print(queue, sym, start, evidx, len,
 649                                                     0, 0, 1, NULL);
 650                         }
 651                 }
 652
 653                 color = get_percent_color(percent);
 654
 655                 /*
 656                  * Also color the filename and line if needed, with
 657                  * the same color than the percentage. Don't print it
 658                  * twice for close colored addr with the same filename:line
 659                  */
 660                 if (path) {
 661                         if (!prev_line || strcmp(prev_line, path)
 662                                        || color != prev_color) {
 663                                 color_fprintf(stdout, color, " %s", path);
 664                                 prev_line = path;
 665                                 prev_color = color;
 666                         }
 667                 }
 668
 669                 color_fprintf(stdout, color, " %7.2f", percent);
 670                 printf(" :      ");
 671                 color_fprintf(stdout, PERF_COLOR_MAGENTA, "  %" PRIx64 ":", addr);
 672                 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
 673         } else if (max_lines && printed >= max_lines)
 674                 return 1;
 675         else {
 676                 if (queue)
 677                         return -1;
 678
 679                 if (!*dl->line)
 680                         printf("         :\n");
 681                 else
 682                         printf("         :      %s\n", dl->line);
 683         }
 684
 685         return 0;
 686 }
 687
 688 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 689                                       FILE *file, size_t privsize)
 690 {
 691         struct annotation *notes = symbol__annotation(sym);
 692         struct disasm_line *dl;
 693         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
 694         size_t line_len;
 695         s64 line_ip, offset = -1;
 696
 697         if (getline(&line, &line_len, file) < 0)
 698                 return -1;
 699
 700         if (!line)
 701                 return -1;
 702
 703         while (line_len != 0 && isspace(line[line_len - 1]))
 704                 line[--line_len] = '\0';
 705
 706         c = strchr(line, '\n');
 707         if (c)
 708                 *c = 0;
 709
 710         line_ip = -1;
 711         parsed_line = line;
 712
 713         /*
 714          * Strip leading spaces:
 715          */
 716         tmp = line;
 717         while (*tmp) {
 718                 if (*tmp != ' ')
 719                         break;
 720                 tmp++;
 721         }
 722
 723         if (*tmp) {
 724                 /*
 725                  * Parse hexa addresses followed by ':'
 726                  */
 727                 line_ip = strtoull(tmp, &tmp2, 16);
 728                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
 729                         line_ip = -1;
 730         }
 731
 732         if (line_ip != -1) {
 733                 u64 start = map__rip_2objdump(map, sym->start),
 734                     end = map__rip_2objdump(map, sym->end);
 735
 736                 offset = line_ip - start;
 737                 if (offset < 0 || (u64)line_ip > end)
 738                         offset = -1;
 739                 else
 740                         parsed_line = tmp2 + 1;
 741         }
 742
 743         dl = disasm_line__new(offset, parsed_line, privsize);
 744         free(line);
 745
 746         if (dl == NULL)
 747                 return -1;
 748
 749         disasm__add(&notes->src->source, dl);
 750
 751         return 0;
 752 }
 753
 754 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
 755 {
 756         struct dso *dso = map->dso;
 757         char *filename = dso__build_id_filename(dso, NULL, 0);
 758         bool free_filename = true;
 759         char command[PATH_MAX * 2];
 760         FILE *file;
 761         int err = 0;
 762         char symfs_filename[PATH_MAX];
 763
 764         if (filename) {
 765                 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
 766                          symbol_conf.symfs, filename);
 767         }
 768
 769         if (filename == NULL) {
 770                 if (dso->has_build_id) {
 771                         pr_err("Can't annotate %s: not enough memory\n",
 772                                sym->name);
 773                         return -ENOMEM;
 774                 }
 775                 goto fallback;
 776         } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
 777                    strstr(command, "[kernel.kallsyms]") ||
 778                    access(symfs_filename, R_OK)) {
 779                 free(filename);
 780 fallback:
 781                 /*
 782                  * If we don't have build-ids or the build-id file isn't in the
 783                  * cache, or is just a kallsyms file, well, lets hope that this
 784                  * DSO is the same as when 'perf record' ran.
 785                  */
 786                 filename = dso->long_name;
 787                 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
 788                          symbol_conf.symfs, filename);
 789                 free_filename = false;
 790         }
 791
 792         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) {
 793                 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
 794                 char *build_id_msg = NULL;
 795
 796                 if (dso->annotate_warned)
 797                         goto out_free_filename;
 798
 799                 if (dso->has_build_id) {
 800                         build_id__sprintf(dso->build_id,
 801                                           sizeof(dso->build_id), bf + 15);
 802                         build_id_msg = bf;
 803                 }
 804                 err = -ENOENT;
 805                 dso->annotate_warned = 1;
 806                 pr_err("Can't annotate %s:\n\n"
 807                        "No vmlinux file%s\nwas found in the path.\n\n"
 808                        "Please use:\n\n"
 809                        "  perf buildid-cache -av vmlinux\n\n"
 810                        "or:\n\n"
 811                        "  --vmlinux vmlinux\n",
 812                        sym->name, build_id_msg ?: "");
 813                 goto out_free_filename;
 814         }
 815
 816         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
 817                  filename, sym->name, map->unmap_ip(map, sym->start),
 818                  map->unmap_ip(map, sym->end));
 819
 820         pr_debug("annotating [%p] %30s : [%p] %30s\n",
 821                  dso, dso->long_name, sym, sym->name);
 822
 823         snprintf(command, sizeof(command),
 824                  "%s %s%s --start-address=0x%016" PRIx64
 825                  " --stop-address=0x%016" PRIx64
 826                  " -d %s %s -C %s|grep -v %s|expand",
 827                  objdump_path ? objdump_path : "objdump",
 828                  disassembler_style ? "-M " : "",
 829                  disassembler_style ? disassembler_style : "",
 830                  map__rip_2objdump(map, sym->start),
 831                  map__rip_2objdump(map, sym->end+1),
 832                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
 833                  symbol_conf.annotate_src ? "-S" : "",
 834                  symfs_filename, filename);
 835
 836         pr_debug("Executing: %s\n", command);
 837
 838         file = popen(command, "r");
 839         if (!file)
 840                 goto out_free_filename;
 841
 842         while (!feof(file))
 843                 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)
 844                         break;
 845
 846         pclose(file);
 847 out_free_filename:
 848         if (free_filename)
 849                 free(filename);
 850         return err;
 851 }
 852
 853 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
 854 {
 855         struct source_line *iter;
 856         struct rb_node **p = &root->rb_node;
 857         struct rb_node *parent = NULL;
 858
 859         while (*p != NULL) {
 860                 parent = *p;
 861                 iter = rb_entry(parent, struct source_line, node);
 862
 863                 if (src_line->percent > iter->percent)
 864                         p = &(*p)->rb_left;
 865                 else
 866                         p = &(*p)->rb_right;
 867         }
 868
 869         rb_link_node(&src_line->node, parent, p);
 870         rb_insert_color(&src_line->node, root);
 871 }
 872
 873 static void symbol__free_source_line(struct symbol *sym, int len)
 874 {
 875         struct annotation *notes = symbol__annotation(sym);
 876         struct source_line *src_line = notes->src->lines;
 877         int i;
 878
 879         for (i = 0; i < len; i++)
 880                 free(src_line[i].path);
 881
 882         free(src_line);
 883         notes->src->lines = NULL;
 884 }
 885
 886 /* Get the filename:line for the colored entries */
 887 static int symbol__get_source_line(struct symbol *sym, struct map *map,
 888                                    int evidx, struct rb_root *root, int len,
 889                                    const char *filename)
 890 {
 891         u64 start;
 892         int i;
 893         char cmd[PATH_MAX * 2];
 894         struct source_line *src_line;
 895         struct annotation *notes = symbol__annotation(sym);
 896         struct sym_hist *h = annotation__histogram(notes, evidx);
 897
 898         if (!h->sum)
 899                 return 0;
 900
 901         src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
 902         if (!notes->src->lines)
 903                 return -1;
 904
 905         start = map__rip_2objdump(map, sym->start);
 906
 907         for (i = 0; i < len; i++) {
 908                 char *path = NULL;
 909                 size_t line_len;
 910                 u64 offset;
 911                 FILE *fp;
 912
 913                 src_line[i].percent = 100.0 * h->addr[i] / h->sum;
 914                 if (src_line[i].percent <= 0.5)
 915                         continue;
 916
 917                 offset = start + i;
 918                 sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
 919                 fp = popen(cmd, "r");
 920                 if (!fp)
 921                         continue;
 922
 923                 if (getline(&path, &line_len, fp) < 0 || !line_len)
 924                         goto next;
 925
 926                 src_line[i].path = malloc(sizeof(char) * line_len + 1);
 927                 if (!src_line[i].path)
 928                         goto next;
 929
 930                 strcpy(src_line[i].path, path);
 931                 insert_source_line(root, &src_line[i]);
 932
 933         next:
 934                 pclose(fp);
 935         }
 936
 937         return 0;
 938 }
 939
 940 static void print_summary(struct rb_root *root, const char *filename)
 941 {
 942         struct source_line *src_line;
 943         struct rb_node *node;
 944
 945         printf("\nSorted summary for file %s\n", filename);
 946         printf("----------------------------------------------\n\n");
 947
 948         if (RB_EMPTY_ROOT(root)) {
 949                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
 950                 return;
 951         }
 952
 953         node = rb_first(root);
 954         while (node) {
 955                 double percent;
 956                 const char *color;
 957                 char *path;
 958
 959                 src_line = rb_entry(node, struct source_line, node);
 960                 percent = src_line->percent;
 961                 color = get_percent_color(percent);
 962                 path = src_line->path;
 963
 964                 color_fprintf(stdout, color, " %7.2f %s", percent, path);
 965                 node = rb_next(node);
 966         }
 967 }
 968
 969 static void symbol__annotate_hits(struct symbol *sym, int evidx)
 970 {
 971         struct annotation *notes = symbol__annotation(sym);
 972         struct sym_hist *h = annotation__histogram(notes, evidx);
 973         u64 len = symbol__size(sym), offset;
 974
 975         for (offset = 0; offset < len; ++offset)
 976                 if (h->addr[offset] != 0)
 977                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
 978                                sym->start + offset, h->addr[offset]);
 979         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
 980 }
 981
 982 int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,
 983                             bool full_paths, int min_pcnt, int max_lines,
 984                             int context)
 985 {
 986         struct dso *dso = map->dso;
 987         char *filename;
 988         const char *d_filename;
 989         struct annotation *notes = symbol__annotation(sym);
 990         struct disasm_line *pos, *queue = NULL;
 991         u64 start = map__rip_2objdump(map, sym->start);
 992         int printed = 2, queue_len = 0;
 993         int more = 0;
 994         u64 len;
 995
 996         filename = strdup(dso->long_name);
 997         if (!filename)
 998                 return -ENOMEM;
 999
1000         if (full_paths)
1001                 d_filename = filename;
1002         else
1003                 d_filename = basename(filename);
1004
1005         len = symbol__size(sym);
1006
1007         printf(" Percent |      Source code & Disassembly of %s\n", d_filename);
1008         printf("------------------------------------------------\n");
1009
1010         if (verbose)
1011                 symbol__annotate_hits(sym, evidx);
1012
1013         list_for_each_entry(pos, &notes->src->source, node) {
1014                 if (context && queue == NULL) {
1015                         queue = pos;
1016                         queue_len = 0;
1017                 }
1018
1019                 switch (disasm_line__print(pos, sym, start, evidx, len,
1020                                             min_pcnt, printed, max_lines,
1021                                             queue)) {
1022                 case 0:
1023                         ++printed;
1024                         if (context) {
1025                                 printed += queue_len;
1026                                 queue = NULL;
1027                                 queue_len = 0;
1028                         }
1029                         break;
1030                 case 1:
1031                         /* filtered by max_lines */
1032                         ++more;
1033                         break;
1034                 case -1:
1035                 default:
1036                         /*
1037                          * Filtered by min_pcnt or non IP lines when
1038                          * context != 0
1039                          */
1040                         if (!context)
1041                                 break;
1042                         if (queue_len == context)
1043                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1044                         else
1045                                 ++queue_len;
1046                         break;
1047                 }
1048         }
1049
1050         free(filename);
1051
1052         return more;
1053 }
1054
1055 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1056 {
1057         struct annotation *notes = symbol__annotation(sym);
1058         struct sym_hist *h = annotation__histogram(notes, evidx);
1059
1060         memset(h, 0, notes->src->sizeof_sym_hist);
1061 }
1062
1063 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1064 {
1065         struct annotation *notes = symbol__annotation(sym);
1066         struct sym_hist *h = annotation__histogram(notes, evidx);
1067         int len = symbol__size(sym), offset;
1068
1069         h->sum = 0;
1070         for (offset = 0; offset < len; ++offset) {
1071                 h->addr[offset] = h->addr[offset] * 7 / 8;
1072                 h->sum += h->addr[offset];
1073         }
1074 }
1075
1076 void disasm__purge(struct list_head *head)
1077 {
1078         struct disasm_line *pos, *n;
1079
1080         list_for_each_entry_safe(pos, n, head, node) {
1081                 list_del(&pos->node);
1082                 disasm_line__free(pos);
1083         }
1084 }
1085
1086 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1087 {
1088         size_t printed;
1089
1090         if (dl->offset == -1)
1091                 return fprintf(fp, "%s\n", dl->line);
1092
1093         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1094
1095         if (dl->ops.raw[0] != '\0') {
1096                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1097                                    dl->ops.raw);
1098         }
1099
1100         return printed + fprintf(fp, "\n");
1101 }
1102
1103 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1104 {
1105         struct disasm_line *pos;
1106         size_t printed = 0;
1107
1108         list_for_each_entry(pos, head, node)
1109                 printed += disasm_line__fprintf(pos, fp);
1110
1111         return printed;
1112 }
1113
1114 int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
1115                          bool print_lines, bool full_paths, int min_pcnt,
1116                          int max_lines)
1117 {
1118         struct dso *dso = map->dso;
1119         const char *filename = dso->long_name;
1120         struct rb_root source_line = RB_ROOT;
1121         u64 len;
1122
1123         if (symbol__annotate(sym, map, 0) < 0)
1124                 return -1;
1125
1126         len = symbol__size(sym);
1127
1128         if (print_lines) {
1129                 symbol__get_source_line(sym, map, evidx, &source_line,
1130                                         len, filename);
1131                 print_summary(&source_line, filename);
1132         }
1133
1134         symbol__annotate_printf(sym, map, evidx, full_paths,
1135                                 min_pcnt, max_lines, 0);
1136         if (print_lines)
1137                 symbol__free_source_line(sym, len);
1138
1139         disasm__purge(&symbol__annotation(sym)->src->source);
1140
1141         return 0;
1142 }