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