tools/perf/util/srcline.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <inttypes.h>
   3 #include <signal.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <sys/types.h>
   8
   9 #include <linux/kernel.h>
  10 #include <linux/string.h>
  11 #include <linux/zalloc.h>
  12
  13 #include <api/io.h>
  14
  15 #include "util/dso.h"
  16 #include "util/debug.h"
  17 #include "util/callchain.h"
  18 #include "util/symbol_conf.h"
  19 #include "srcline.h"
  20 #include "string2.h"
  21 #include "symbol.h"
  22 #include "subcmd/run-command.h"
  23
  24 bool srcline_full_filename;
  25
  26 static const char *dso__name(struct dso *dso)
  27 {
  28         const char *dso_name;
  29
  30         if (dso->symsrc_filename)
  31                 dso_name = dso->symsrc_filename;
  32         else
  33                 dso_name = dso->long_name;
  34
  35         if (dso_name[0] == '[')
  36                 return NULL;
  37
  38         if (!strncmp(dso_name, "/tmp/perf-", 10))
  39                 return NULL;
  40
  41         return dso_name;
  42 }
  43
  44 static int inline_list__append(struct symbol *symbol, char *srcline,
  45                                struct inline_node *node)
  46 {
  47         struct inline_list *ilist;
  48
  49         ilist = zalloc(sizeof(*ilist));
  50         if (ilist == NULL)
  51                 return -1;
  52
  53         ilist->symbol = symbol;
  54         ilist->srcline = srcline;
  55
  56         if (callchain_param.order == ORDER_CALLEE)
  57                 list_add_tail(&ilist->list, &node->val);
  58         else
  59                 list_add(&ilist->list, &node->val);
  60
  61         return 0;
  62 }
  63
  64 /* basename version that takes a const input string */
  65 static const char *gnu_basename(const char *path)
  66 {
  67         const char *base = strrchr(path, '/');
  68
  69         return base ? base + 1 : path;
  70 }
  71
  72 static char *srcline_from_fileline(const char *file, unsigned int line)
  73 {
  74         char *srcline;
  75
  76         if (!file)
  77                 return NULL;
  78
  79         if (!srcline_full_filename)
  80                 file = gnu_basename(file);
  81
  82         if (asprintf(&srcline, "%s:%u", file, line) < 0)
  83                 return NULL;
  84
  85         return srcline;
  86 }
  87
  88 static struct symbol *new_inline_sym(struct dso *dso,
  89                                      struct symbol *base_sym,
  90                                      const char *funcname)
  91 {
  92         struct symbol *inline_sym;
  93         char *demangled = NULL;
  94
  95         if (!funcname)
  96                 funcname = "??";
  97
  98         if (dso) {
  99                 demangled = dso__demangle_sym(dso, 0, funcname);
 100                 if (demangled)
 101                         funcname = demangled;
 102         }
 103
 104         if (base_sym && strcmp(funcname, base_sym->name) == 0) {
 105                 /* reuse the real, existing symbol */
 106                 inline_sym = base_sym;
 107                 /* ensure that we don't alias an inlined symbol, which could
 108                  * lead to double frees in inline_node__delete
 109                  */
 110                 assert(!base_sym->inlined);
 111         } else {
 112                 /* create a fake symbol for the inline frame */
 113                 inline_sym = symbol__new(base_sym ? base_sym->start : 0,
 114                                          base_sym ? (base_sym->end - base_sym->start) : 0,
 115                                          base_sym ? base_sym->binding : 0,
 116                                          base_sym ? base_sym->type : 0,
 117                                          funcname);
 118                 if (inline_sym)
 119                         inline_sym->inlined = 1;
 120         }
 121
 122         free(demangled);
 123
 124         return inline_sym;
 125 }
 126
 127 #define MAX_INLINE_NEST 1024
 128
 129 #ifdef HAVE_LIBBFD_SUPPORT
 130
 131 /*
 132  * Implement addr2line using libbfd.
 133  */
 134 #define PACKAGE "perf"
 135 #include <bfd.h>
 136
 137 struct a2l_data {
 138         const char      *input;
 139         u64             addr;
 140
 141         bool            found;
 142         const char      *filename;
 143         const char      *funcname;
 144         unsigned        line;
 145
 146         bfd             *abfd;
 147         asymbol         **syms;
 148 };
 149
 150 static int bfd_error(const char *string)
 151 {
 152         const char *errmsg;
 153
 154         errmsg = bfd_errmsg(bfd_get_error());
 155         fflush(stdout);
 156
 157         if (string)
 158                 pr_debug("%s: %s\n", string, errmsg);
 159         else
 160                 pr_debug("%s\n", errmsg);
 161
 162         return -1;
 163 }
 164
 165 static int slurp_symtab(bfd *abfd, struct a2l_data *a2l)
 166 {
 167         long storage;
 168         long symcount;
 169         asymbol **syms;
 170         bfd_boolean dynamic = FALSE;
 171
 172         if ((bfd_get_file_flags(abfd) & HAS_SYMS) == 0)
 173                 return bfd_error(bfd_get_filename(abfd));
 174
 175         storage = bfd_get_symtab_upper_bound(abfd);
 176         if (storage == 0L) {
 177                 storage = bfd_get_dynamic_symtab_upper_bound(abfd);
 178                 dynamic = TRUE;
 179         }
 180         if (storage < 0L)
 181                 return bfd_error(bfd_get_filename(abfd));
 182
 183         syms = malloc(storage);
 184         if (dynamic)
 185                 symcount = bfd_canonicalize_dynamic_symtab(abfd, syms);
 186         else
 187                 symcount = bfd_canonicalize_symtab(abfd, syms);
 188
 189         if (symcount < 0) {
 190                 free(syms);
 191                 return bfd_error(bfd_get_filename(abfd));
 192         }
 193
 194         a2l->syms = syms;
 195         return 0;
 196 }
 197
 198 static void find_address_in_section(bfd *abfd, asection *section, void *data)
 199 {
 200         bfd_vma pc, vma;
 201         bfd_size_type size;
 202         struct a2l_data *a2l = data;
 203         flagword flags;
 204
 205         if (a2l->found)
 206                 return;
 207
 208 #ifdef bfd_get_section_flags
 209         flags = bfd_get_section_flags(abfd, section);
 210 #else
 211         flags = bfd_section_flags(section);
 212 #endif
 213         if ((flags & SEC_ALLOC) == 0)
 214                 return;
 215
 216         pc = a2l->addr;
 217 #ifdef bfd_get_section_vma
 218         vma = bfd_get_section_vma(abfd, section);
 219 #else
 220         vma = bfd_section_vma(section);
 221 #endif
 222 #ifdef bfd_get_section_size
 223         size = bfd_get_section_size(section);
 224 #else
 225         size = bfd_section_size(section);
 226 #endif
 227
 228         if (pc < vma || pc >= vma + size)
 229                 return;
 230
 231         a2l->found = bfd_find_nearest_line(abfd, section, a2l->syms, pc - vma,
 232                                            &a2l->filename, &a2l->funcname,
 233                                            &a2l->line);
 234
 235         if (a2l->filename && !strlen(a2l->filename))
 236                 a2l->filename = NULL;
 237 }
 238
 239 static struct a2l_data *addr2line_init(const char *path)
 240 {
 241         bfd *abfd;
 242         struct a2l_data *a2l = NULL;
 243
 244         abfd = bfd_openr(path, NULL);
 245         if (abfd == NULL)
 246                 return NULL;
 247
 248         if (!bfd_check_format(abfd, bfd_object))
 249                 goto out;
 250
 251         a2l = zalloc(sizeof(*a2l));
 252         if (a2l == NULL)
 253                 goto out;
 254
 255         a2l->abfd = abfd;
 256         a2l->input = strdup(path);
 257         if (a2l->input == NULL)
 258                 goto out;
 259
 260         if (slurp_symtab(abfd, a2l))
 261                 goto out;
 262
 263         return a2l;
 264
 265 out:
 266         if (a2l) {
 267                 zfree((char **)&a2l->input);
 268                 free(a2l);
 269         }
 270         bfd_close(abfd);
 271         return NULL;
 272 }
 273
 274 static void addr2line_cleanup(struct a2l_data *a2l)
 275 {
 276         if (a2l->abfd)
 277                 bfd_close(a2l->abfd);
 278         zfree((char **)&a2l->input);
 279         zfree(&a2l->syms);
 280         free(a2l);
 281 }
 282
 283 static int inline_list__append_dso_a2l(struct dso *dso,
 284                                        struct inline_node *node,
 285                                        struct symbol *sym)
 286 {
 287         struct a2l_data *a2l = dso->a2l;
 288         struct symbol *inline_sym = new_inline_sym(dso, sym, a2l->funcname);
 289         char *srcline = NULL;
 290
 291         if (a2l->filename)
 292                 srcline = srcline_from_fileline(a2l->filename, a2l->line);
 293
 294         return inline_list__append(inline_sym, srcline, node);
 295 }
 296
 297 static int addr2line(const char *dso_name, u64 addr,
 298                      char **file, unsigned int *line, struct dso *dso,
 299                      bool unwind_inlines, struct inline_node *node,
 300                      struct symbol *sym)
 301 {
 302         int ret = 0;
 303         struct a2l_data *a2l = dso->a2l;
 304
 305         if (!a2l) {
 306                 dso->a2l = addr2line_init(dso_name);
 307                 a2l = dso->a2l;
 308         }
 309
 310         if (a2l == NULL) {
 311                 if (!symbol_conf.disable_add2line_warn)
 312                         pr_warning("addr2line_init failed for %s\n", dso_name);
 313                 return 0;
 314         }
 315
 316         a2l->addr = addr;
 317         a2l->found = false;
 318
 319         bfd_map_over_sections(a2l->abfd, find_address_in_section, a2l);
 320
 321         if (!a2l->found)
 322                 return 0;
 323
 324         if (unwind_inlines) {
 325                 int cnt = 0;
 326
 327                 if (node && inline_list__append_dso_a2l(dso, node, sym))
 328                         return 0;
 329
 330                 while (bfd_find_inliner_info(a2l->abfd, &a2l->filename,
 331                                              &a2l->funcname, &a2l->line) &&
 332                        cnt++ < MAX_INLINE_NEST) {
 333
 334                         if (a2l->filename && !strlen(a2l->filename))
 335                                 a2l->filename = NULL;
 336
 337                         if (node != NULL) {
 338                                 if (inline_list__append_dso_a2l(dso, node, sym))
 339                                         return 0;
 340                                 // found at least one inline frame
 341                                 ret = 1;
 342                         }
 343                 }
 344         }
 345
 346         if (file) {
 347                 *file = a2l->filename ? strdup(a2l->filename) : NULL;
 348                 ret = *file ? 1 : 0;
 349         }
 350
 351         if (line)
 352                 *line = a2l->line;
 353
 354         return ret;
 355 }
 356
 357 void dso__free_a2l(struct dso *dso)
 358 {
 359         struct a2l_data *a2l = dso->a2l;
 360
 361         if (!a2l)
 362                 return;
 363
 364         addr2line_cleanup(a2l);
 365
 366         dso->a2l = NULL;
 367 }
 368
 369 #else /* HAVE_LIBBFD_SUPPORT */
 370
 371 static int filename_split(char *filename, unsigned int *line_nr)
 372 {
 373         char *sep;
 374
 375         sep = strchr(filename, '\n');
 376         if (sep)
 377                 *sep = '\0';
 378
 379         if (!strcmp(filename, "??:0"))
 380                 return 0;
 381
 382         sep = strchr(filename, ':');
 383         if (sep) {
 384                 *sep++ = '\0';
 385                 *line_nr = strtoul(sep, NULL, 0);
 386                 return 1;
 387         }
 388
 389         return 0;
 390 }
 391
 392 static void addr2line_subprocess_cleanup(struct child_process *a2l)
 393 {
 394         if (a2l->pid != -1) {
 395                 kill(a2l->pid, SIGKILL);
 396                 finish_command(a2l); /* ignore result, we don't care */
 397                 a2l->pid = -1;
 398         }
 399
 400         free(a2l);
 401 }
 402
 403 static struct child_process *addr2line_subprocess_init(const char *addr2line_path,
 404                                                         const char *binary_path)
 405 {
 406         const char *argv[] = {
 407                 addr2line_path ?: "addr2line",
 408                 "-e", binary_path,
 409                 "-i", "-f", NULL
 410         };
 411         struct child_process *a2l = zalloc(sizeof(*a2l));
 412         int start_command_status = 0;
 413
 414         if (a2l == NULL) {
 415                 pr_err("Failed to allocate memory for addr2line");
 416                 return NULL;
 417         }
 418
 419         a2l->pid = -1;
 420         a2l->in = -1;
 421         a2l->out = -1;
 422         a2l->no_stderr = 1;
 423
 424         a2l->argv = argv;
 425         start_command_status = start_command(a2l);
 426         a2l->argv = NULL; /* it's not used after start_command; avoid dangling pointers */
 427
 428         if (start_command_status != 0) {
 429                 pr_warning("could not start addr2line (%s) for %s: start_command return code %d\n",
 430                         addr2line_path, binary_path, start_command_status);
 431                 addr2line_subprocess_cleanup(a2l);
 432                 return NULL;
 433         }
 434
 435         return a2l;
 436 }
 437
 438 enum a2l_style {
 439         BROKEN,
 440         GNU_BINUTILS,
 441         LLVM,
 442 };
 443
 444 static enum a2l_style addr2line_configure(struct child_process *a2l)
 445 {
 446         static bool cached;
 447         static enum a2l_style style;
 448
 449         if (!cached) {
 450                 char buf[128];
 451                 struct io io;
 452                 int ch;
 453
 454                 if (write(a2l->in, ",\n", 2) != 2)
 455                         return BROKEN;
 456
 457                 io__init(&io, a2l->out, buf, sizeof(buf));
 458                 ch = io__get_char(&io);
 459                 if (ch == ',') {
 460                         style = LLVM;
 461                         cached = true;
 462                 } else if (ch == '?') {
 463                         style = GNU_BINUTILS;
 464                         cached = true;
 465                 } else {
 466                         style = BROKEN;
 467                 }
 468                 do {
 469                         ch = io__get_char(&io);
 470                 } while (ch > 0 && ch != '\n');
 471                 if (style == GNU_BINUTILS) {
 472                         do {
 473                                 ch = io__get_char(&io);
 474                         } while (ch > 0 && ch != '\n');
 475                 }
 476                 /* Ignore SIGPIPE in the event addr2line exits. */
 477                 signal(SIGPIPE, SIG_IGN);
 478         }
 479         return style;
 480 }
 481
 482 static int read_addr2line_record(struct io *io,
 483                                  enum a2l_style style,
 484                                  char **function,
 485                                  char **filename,
 486                                  unsigned int *line_nr)
 487 {
 488         /*
 489          * Returns:
 490          * -1 ==> error
 491          * 0 ==> sentinel (or other ill-formed) record read
 492          * 1 ==> a genuine record read
 493          */
 494         char *line = NULL;
 495         size_t line_len = 0;
 496         unsigned int dummy_line_nr = 0;
 497         int ret = -1;
 498
 499         if (function != NULL)
 500                 zfree(function);
 501
 502         if (filename != NULL)
 503                 zfree(filename);
 504
 505         if (line_nr != NULL)
 506                 *line_nr = 0;
 507
 508         if (io__getline(io, &line, &line_len) < 0 || !line_len)
 509                 goto error;
 510
 511         if (style == LLVM && line_len == 2 && line[0] == ',') {
 512                 zfree(&line);
 513                 return 0;
 514         }
 515
 516         if (function != NULL)
 517                 *function = strdup(strim(line));
 518
 519         zfree(&line);
 520         line_len = 0;
 521
 522         if (io__getline(io, &line, &line_len) < 0 || !line_len)
 523                 goto error;
 524
 525         if (filename_split(line, line_nr == NULL ? &dummy_line_nr : line_nr) == 0 &&
 526             style == GNU_BINUTILS) {
 527                 ret = 0;
 528                 goto error;
 529         }
 530
 531         if (filename != NULL)
 532                 *filename = strdup(line);
 533
 534         zfree(&line);
 535         line_len = 0;
 536
 537         return 1;
 538
 539 error:
 540         free(line);
 541         if (function != NULL)
 542                 zfree(function);
 543         if (filename != NULL)
 544                 zfree(filename);
 545         return ret;
 546 }
 547
 548 static int inline_list__append_record(struct dso *dso,
 549                                       struct inline_node *node,
 550                                       struct symbol *sym,
 551                                       const char *function,
 552                                       const char *filename,
 553                                       unsigned int line_nr)
 554 {
 555         struct symbol *inline_sym = new_inline_sym(dso, sym, function);
 556
 557         return inline_list__append(inline_sym, srcline_from_fileline(filename, line_nr), node);
 558 }
 559
 560 static int addr2line(const char *dso_name, u64 addr,
 561                      char **file, unsigned int *line_nr,
 562                      struct dso *dso,
 563                      bool unwind_inlines,
 564                      struct inline_node *node,
 565                      struct symbol *sym __maybe_unused)
 566 {
 567         struct child_process *a2l = dso->a2l;
 568         char *record_function = NULL;
 569         char *record_filename = NULL;
 570         unsigned int record_line_nr = 0;
 571         int record_status = -1;
 572         int ret = 0;
 573         size_t inline_count = 0;
 574         int len;
 575         char buf[128];
 576         ssize_t written;
 577         struct io io;
 578         enum a2l_style a2l_style;
 579
 580         if (!a2l) {
 581                 if (!filename__has_section(dso_name, ".debug_line"))
 582                         goto out;
 583
 584                 dso->a2l = addr2line_subprocess_init(symbol_conf.addr2line_path,
 585                                                      dso_name);
 586                 a2l = dso->a2l;
 587         }
 588
 589         if (a2l == NULL) {
 590                 if (!symbol_conf.disable_add2line_warn)
 591                         pr_warning("%s %s: addr2line_subprocess_init failed\n", __func__, dso_name);
 592                 goto out;
 593         }
 594         a2l_style = addr2line_configure(a2l);
 595         if (a2l_style == BROKEN) {
 596                 if (!symbol_conf.disable_add2line_warn)
 597                         pr_warning("%s: addr2line configuration failed\n", __func__);
 598                 goto out;
 599         }
 600
 601         /*
 602          * Send our request and then *deliberately* send something that can't be interpreted as
 603          * a valid address to ask addr2line about (namely, ","). This causes addr2line to first
 604          * write out the answer to our request, in an unbounded/unknown number of records, and
 605          * then to write out the lines "??" and "??:0", for GNU binutils, or "," for
 606          * llvm-addr2line, so that we can detect when it has finished giving us anything
 607          * useful. With GNU binutils, we have to be careful about the first record, though,
 608          * because it may be genuinely unknown, in which case we'll get two sets of "??"/"??:0"
 609          * lines.
 610          */
 611         len = snprintf(buf, sizeof(buf), "%016"PRIx64"\n,\n", addr);
 612         written = len > 0 ? write(a2l->in, buf, len) : -1;
 613         if (written != len) {
 614                 if (!symbol_conf.disable_add2line_warn)
 615                         pr_warning("%s %s: could not send request\n", __func__, dso_name);
 616                 goto out;
 617         }
 618         io__init(&io, a2l->out, buf, sizeof(buf));
 619
 620         switch (read_addr2line_record(&io, a2l_style,
 621                                       &record_function, &record_filename, &record_line_nr)) {
 622         case -1:
 623                 if (!symbol_conf.disable_add2line_warn)
 624                         pr_warning("%s %s: could not read first record\n", __func__, dso_name);
 625                 goto out;
 626         case 0:
 627                 /*
 628                  * The first record was invalid, so return failure, but first read another
 629                  * record, since we asked a junk question and have to clear the answer out.
 630                  */
 631                 switch (read_addr2line_record(&io, a2l_style, NULL, NULL, NULL)) {
 632                 case -1:
 633                         if (!symbol_conf.disable_add2line_warn)
 634                                 pr_warning("%s %s: could not read delimiter record\n",
 635                                            __func__, dso_name);
 636                         break;
 637                 case 0:
 638                         /* As expected. */
 639                         break;
 640                 default:
 641                         if (!symbol_conf.disable_add2line_warn)
 642                                 pr_warning("%s %s: unexpected record instead of sentinel",
 643                                            __func__, dso_name);
 644                         break;
 645                 }
 646                 goto out;
 647         default:
 648                 break;
 649         }
 650
 651         if (file) {
 652                 *file = strdup(record_filename);
 653                 ret = 1;
 654         }
 655         if (line_nr)
 656                 *line_nr = record_line_nr;
 657
 658         if (unwind_inlines) {
 659                 if (node && inline_list__append_record(dso, node, sym,
 660                                                        record_function,
 661                                                        record_filename,
 662                                                        record_line_nr)) {
 663                         ret = 0;
 664                         goto out;
 665                 }
 666         }
 667
 668         /* We have to read the records even if we don't care about the inline info. */
 669         while ((record_status = read_addr2line_record(&io,
 670                                                       a2l_style,
 671                                                       &record_function,
 672                                                       &record_filename,
 673                                                       &record_line_nr)) == 1) {
 674                 if (unwind_inlines && node && inline_count++ < MAX_INLINE_NEST) {
 675                         if (inline_list__append_record(dso, node, sym,
 676                                                        record_function,
 677                                                        record_filename,
 678                                                        record_line_nr)) {
 679                                 ret = 0;
 680                                 goto out;
 681                         }
 682                         ret = 1; /* found at least one inline frame */
 683                 }
 684         }
 685
 686 out:
 687         free(record_function);
 688         free(record_filename);
 689         return ret;
 690 }
 691
 692 void dso__free_a2l(struct dso *dso)
 693 {
 694         struct child_process *a2l = dso->a2l;
 695
 696         if (!a2l)
 697                 return;
 698
 699         addr2line_subprocess_cleanup(a2l);
 700
 701         dso->a2l = NULL;
 702 }
 703
 704 #endif /* HAVE_LIBBFD_SUPPORT */
 705
 706 static struct inline_node *addr2inlines(const char *dso_name, u64 addr,
 707                                         struct dso *dso, struct symbol *sym)
 708 {
 709         struct inline_node *node;
 710
 711         node = zalloc(sizeof(*node));
 712         if (node == NULL) {
 713                 perror("not enough memory for the inline node");
 714                 return NULL;
 715         }
 716
 717         INIT_LIST_HEAD(&node->val);
 718         node->addr = addr;
 719
 720         addr2line(dso_name, addr, NULL, NULL, dso, true, node, sym);
 721         return node;
 722 }
 723
 724 /*
 725  * Number of addr2line failures (without success) before disabling it for that
 726  * dso.
 727  */
 728 #define A2L_FAIL_LIMIT 123
 729
 730 char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 731                   bool show_sym, bool show_addr, bool unwind_inlines,
 732                   u64 ip)
 733 {
 734         char *file = NULL;
 735         unsigned line = 0;
 736         char *srcline;
 737         const char *dso_name;
 738
 739         if (!dso->has_srcline)
 740                 goto out;
 741
 742         dso_name = dso__name(dso);
 743         if (dso_name == NULL)
 744                 goto out;
 745
 746         if (!addr2line(dso_name, addr, &file, &line, dso,
 747                        unwind_inlines, NULL, sym))
 748                 goto out;
 749
 750         srcline = srcline_from_fileline(file, line);
 751         free(file);
 752
 753         if (!srcline)
 754                 goto out;
 755
 756         dso->a2l_fails = 0;
 757
 758         return srcline;
 759
 760 out:
 761         if (dso->a2l_fails && ++dso->a2l_fails > A2L_FAIL_LIMIT) {
 762                 dso->has_srcline = 0;
 763                 dso__free_a2l(dso);
 764         }
 765
 766         if (!show_addr)
 767                 return (show_sym && sym) ?
 768                             strndup(sym->name, sym->namelen) : SRCLINE_UNKNOWN;
 769
 770         if (sym) {
 771                 if (asprintf(&srcline, "%s+%" PRIu64, show_sym ? sym->name : "",
 772                                         ip - sym->start) < 0)
 773                         return SRCLINE_UNKNOWN;
 774         } else if (asprintf(&srcline, "%s[%" PRIx64 "]", dso->short_name, addr) < 0)
 775                 return SRCLINE_UNKNOWN;
 776         return srcline;
 777 }
 778
 779 /* Returns filename and fills in line number in line */
 780 char *get_srcline_split(struct dso *dso, u64 addr, unsigned *line)
 781 {
 782         char *file = NULL;
 783         const char *dso_name;
 784
 785         if (!dso->has_srcline)
 786                 goto out;
 787
 788         dso_name = dso__name(dso);
 789         if (dso_name == NULL)
 790                 goto out;
 791
 792         if (!addr2line(dso_name, addr, &file, line, dso, true, NULL, NULL))
 793                 goto out;
 794
 795         dso->a2l_fails = 0;
 796         return file;
 797
 798 out:
 799         if (dso->a2l_fails && ++dso->a2l_fails > A2L_FAIL_LIMIT) {
 800                 dso->has_srcline = 0;
 801                 dso__free_a2l(dso);
 802         }
 803
 804         return NULL;
 805 }
 806
 807 void free_srcline(char *srcline)
 808 {
 809         if (srcline && strcmp(srcline, SRCLINE_UNKNOWN) != 0)
 810                 free(srcline);
 811 }
 812
 813 char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
 814                   bool show_sym, bool show_addr, u64 ip)
 815 {
 816         return __get_srcline(dso, addr, sym, show_sym, show_addr, false, ip);
 817 }
 818
 819 struct srcline_node {
 820         u64                     addr;
 821         char                    *srcline;
 822         struct rb_node          rb_node;
 823 };
 824
 825 void srcline__tree_insert(struct rb_root_cached *tree, u64 addr, char *srcline)
 826 {
 827         struct rb_node **p = &tree->rb_root.rb_node;
 828         struct rb_node *parent = NULL;
 829         struct srcline_node *i, *node;
 830         bool leftmost = true;
 831
 832         node = zalloc(sizeof(struct srcline_node));
 833         if (!node) {
 834                 perror("not enough memory for the srcline node");
 835                 return;
 836         }
 837
 838         node->addr = addr;
 839         node->srcline = srcline;
 840
 841         while (*p != NULL) {
 842                 parent = *p;
 843                 i = rb_entry(parent, struct srcline_node, rb_node);
 844                 if (addr < i->addr)
 845                         p = &(*p)->rb_left;
 846                 else {
 847                         p = &(*p)->rb_right;
 848                         leftmost = false;
 849                 }
 850         }
 851         rb_link_node(&node->rb_node, parent, p);
 852         rb_insert_color_cached(&node->rb_node, tree, leftmost);
 853 }
 854
 855 char *srcline__tree_find(struct rb_root_cached *tree, u64 addr)
 856 {
 857         struct rb_node *n = tree->rb_root.rb_node;
 858
 859         while (n) {
 860                 struct srcline_node *i = rb_entry(n, struct srcline_node,
 861                                                   rb_node);
 862
 863                 if (addr < i->addr)
 864                         n = n->rb_left;
 865                 else if (addr > i->addr)
 866                         n = n->rb_right;
 867                 else
 868                         return i->srcline;
 869         }
 870
 871         return NULL;
 872 }
 873
 874 void srcline__tree_delete(struct rb_root_cached *tree)
 875 {
 876         struct srcline_node *pos;
 877         struct rb_node *next = rb_first_cached(tree);
 878
 879         while (next) {
 880                 pos = rb_entry(next, struct srcline_node, rb_node);
 881                 next = rb_next(&pos->rb_node);
 882                 rb_erase_cached(&pos->rb_node, tree);
 883                 free_srcline(pos->srcline);
 884                 zfree(&pos);
 885         }
 886 }
 887
 888 struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr,
 889                                             struct symbol *sym)
 890 {
 891         const char *dso_name;
 892
 893         dso_name = dso__name(dso);
 894         if (dso_name == NULL)
 895                 return NULL;
 896
 897         return addr2inlines(dso_name, addr, dso, sym);
 898 }
 899
 900 void inline_node__delete(struct inline_node *node)
 901 {
 902         struct inline_list *ilist, *tmp;
 903
 904         list_for_each_entry_safe(ilist, tmp, &node->val, list) {
 905                 list_del_init(&ilist->list);
 906                 free_srcline(ilist->srcline);
 907                 /* only the inlined symbols are owned by the list */
 908                 if (ilist->symbol && ilist->symbol->inlined)
 909                         symbol__delete(ilist->symbol);
 910                 free(ilist);
 911         }
 912
 913         free(node);
 914 }
 915
 916 void inlines__tree_insert(struct rb_root_cached *tree,
 917                           struct inline_node *inlines)
 918 {
 919         struct rb_node **p = &tree->rb_root.rb_node;
 920         struct rb_node *parent = NULL;
 921         const u64 addr = inlines->addr;
 922         struct inline_node *i;
 923         bool leftmost = true;
 924
 925         while (*p != NULL) {
 926                 parent = *p;
 927                 i = rb_entry(parent, struct inline_node, rb_node);
 928                 if (addr < i->addr)
 929                         p = &(*p)->rb_left;
 930                 else {
 931                         p = &(*p)->rb_right;
 932                         leftmost = false;
 933                 }
 934         }
 935         rb_link_node(&inlines->rb_node, parent, p);
 936         rb_insert_color_cached(&inlines->rb_node, tree, leftmost);
 937 }
 938
 939 struct inline_node *inlines__tree_find(struct rb_root_cached *tree, u64 addr)
 940 {
 941         struct rb_node *n = tree->rb_root.rb_node;
 942
 943         while (n) {
 944                 struct inline_node *i = rb_entry(n, struct inline_node,
 945                                                  rb_node);
 946
 947                 if (addr < i->addr)
 948                         n = n->rb_left;
 949                 else if (addr > i->addr)
 950                         n = n->rb_right;
 951                 else
 952                         return i;
 953         }
 954
 955         return NULL;
 956 }
 957
 958 void inlines__tree_delete(struct rb_root_cached *tree)
 959 {
 960         struct inline_node *pos;
 961         struct rb_node *next = rb_first_cached(tree);
 962
 963         while (next) {
 964                 pos = rb_entry(next, struct inline_node, rb_node);
 965                 next = rb_next(&pos->rb_node);
 966                 rb_erase_cached(&pos->rb_node, tree);
 967                 inline_node__delete(pos);
 968         }
 969 }