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