gdb/symmisc.c

   1 /* Do various things to symbol tables (other than lookup), for GDB.
   2
   3    Copyright (C) 1986-2019 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "symtab.h"
  22 #include "gdbtypes.h"
  23 #include "bfd.h"
  24 #include "filenames.h"
  25 #include "symfile.h"
  26 #include "objfiles.h"
  27 #include "breakpoint.h"
  28 #include "command.h"
  29 #include "gdb_obstack.h"
  30 #include "language.h"
  31 #include "bcache.h"
  32 #include "block.h"
  33 #include "gdb_regex.h"
  34 #include <sys/stat.h>
  35 #include "dictionary.h"
  36 #include "typeprint.h"
  37 #include "gdbcmd.h"
  38 #include "source.h"
  39 #include "readline/readline.h"
  40
  41 #include "psymtab.h"
  42
  43 /* Unfortunately for debugging, stderr is usually a macro.  This is painful
  44    when calling functions that take FILE *'s from the debugger.
  45    So we make a variable which has the same value and which is accessible when
  46    debugging GDB with itself.  Because stdin et al need not be constants,
  47    we initialize them in the _initialize_symmisc function at the bottom
  48    of the file.  */
  49 FILE *std_in;
  50 FILE *std_out;
  51 FILE *std_err;
  52
  53 /* Prototypes for local functions */
  54
  55 static int block_depth (struct block *);
  56
  57 static void print_symbol (struct gdbarch *gdbarch, struct symbol *symbol,
  58                           int depth, ui_file *outfile);
  59 \f
  60
  61 void
  62 print_symbol_bcache_statistics (void)
  63 {
  64   struct program_space *pspace;
  65
  66   ALL_PSPACES (pspace)
  67     for (objfile *objfile : pspace->objfiles ())
  68       {
  69         QUIT;
  70         printf_filtered (_("Byte cache statistics for '%s':\n"),
  71                          objfile_name (objfile));
  72         print_bcache_statistics
  73           (psymbol_bcache_get_bcache (objfile->partial_symtabs->psymbol_cache),
  74            "partial symbol cache");
  75         print_bcache_statistics (objfile->per_bfd->macro_cache,
  76                                  "preprocessor macro cache");
  77         print_bcache_statistics (objfile->per_bfd->filename_cache,
  78                                  "file name cache");
  79       }
  80 }
  81
  82 void
  83 print_objfile_statistics (void)
  84 {
  85   struct program_space *pspace;
  86   int i, linetables, blockvectors;
  87
  88   ALL_PSPACES (pspace)
  89   for (objfile *objfile : pspace->objfiles ())
  90     {
  91       QUIT;
  92       printf_filtered (_("Statistics for '%s':\n"), objfile_name (objfile));
  93       if (OBJSTAT (objfile, n_stabs) > 0)
  94         printf_filtered (_("  Number of \"stab\" symbols read: %d\n"),
  95                          OBJSTAT (objfile, n_stabs));
  96       if (objfile->per_bfd->n_minsyms > 0)
  97         printf_filtered (_("  Number of \"minimal\" symbols read: %d\n"),
  98                          objfile->per_bfd->n_minsyms);
  99       if (OBJSTAT (objfile, n_psyms) > 0)
 100         printf_filtered (_("  Number of \"partial\" symbols read: %d\n"),
 101                          OBJSTAT (objfile, n_psyms));
 102       if (OBJSTAT (objfile, n_syms) > 0)
 103         printf_filtered (_("  Number of \"full\" symbols read: %d\n"),
 104                          OBJSTAT (objfile, n_syms));
 105       if (OBJSTAT (objfile, n_types) > 0)
 106         printf_filtered (_("  Number of \"types\" defined: %d\n"),
 107                          OBJSTAT (objfile, n_types));
 108       if (objfile->sf)
 109         objfile->sf->qf->print_stats (objfile);
 110       i = linetables = 0;
 111       for (compunit_symtab *cu : objfile->compunits ())
 112         {
 113           for (symtab *s : compunit_filetabs (cu))
 114             {
 115               i++;
 116               if (SYMTAB_LINETABLE (s) != NULL)
 117                 linetables++;
 118             }
 119         }
 120       blockvectors = std::distance (objfile->compunits ().begin (),
 121                                     objfile->compunits ().end ());
 122       printf_filtered (_("  Number of symbol tables: %d\n"), i);
 123       printf_filtered (_("  Number of symbol tables with line tables: %d\n"),
 124                        linetables);
 125       printf_filtered (_("  Number of symbol tables with blockvectors: %d\n"),
 126                        blockvectors);
 127
 128       if (OBJSTAT (objfile, sz_strtab) > 0)
 129         printf_filtered (_("  Space used by string tables: %d\n"),
 130                          OBJSTAT (objfile, sz_strtab));
 131       printf_filtered (_("  Total memory used for objfile obstack: %s\n"),
 132                        pulongest (obstack_memory_used (&objfile
 133                                                        ->objfile_obstack)));
 134       printf_filtered (_("  Total memory used for BFD obstack: %s\n"),
 135                        pulongest (obstack_memory_used (&objfile->per_bfd
 136                                                        ->storage_obstack)));
 137       printf_filtered
 138         (_("  Total memory used for psymbol cache: %d\n"),
 139          bcache_memory_used (psymbol_bcache_get_bcache
 140                              (objfile->partial_symtabs->psymbol_cache)));
 141       printf_filtered (_("  Total memory used for macro cache: %d\n"),
 142                        bcache_memory_used (objfile->per_bfd->macro_cache));
 143       printf_filtered (_("  Total memory used for file name cache: %d\n"),
 144                        bcache_memory_used (objfile->per_bfd->filename_cache));
 145     }
 146 }
 147
 148 static void
 149 dump_objfile (struct objfile *objfile)
 150 {
 151   printf_filtered ("\nObject file %s:  ", objfile_name (objfile));
 152   printf_filtered ("Objfile at ");
 153   gdb_print_host_address (objfile, gdb_stdout);
 154   printf_filtered (", bfd at ");
 155   gdb_print_host_address (objfile->obfd, gdb_stdout);
 156   printf_filtered (", %d minsyms\n\n",
 157                    objfile->per_bfd->minimal_symbol_count);
 158
 159   if (objfile->sf)
 160     objfile->sf->qf->dump (objfile);
 161
 162   if (objfile->compunit_symtabs != NULL)
 163     {
 164       printf_filtered ("Symtabs:\n");
 165       for (compunit_symtab *cu : objfile->compunits ())
 166         {
 167           for (symtab *symtab : compunit_filetabs (cu))
 168             {
 169               printf_filtered ("%s at ",
 170                                symtab_to_filename_for_display (symtab));
 171               gdb_print_host_address (symtab, gdb_stdout);
 172               printf_filtered (", ");
 173               if (SYMTAB_OBJFILE (symtab) != objfile)
 174                 {
 175                   printf_filtered ("NOT ON CHAIN!  ");
 176                 }
 177               wrap_here ("  ");
 178             }
 179         }
 180       printf_filtered ("\n\n");
 181     }
 182 }
 183
 184 /* Print minimal symbols from this objfile.  */
 185
 186 static void
 187 dump_msymbols (struct objfile *objfile, struct ui_file *outfile)
 188 {
 189   struct gdbarch *gdbarch = get_objfile_arch (objfile);
 190   int index;
 191   char ms_type;
 192
 193   fprintf_filtered (outfile, "\nObject file %s:\n\n", objfile_name (objfile));
 194   if (objfile->per_bfd->minimal_symbol_count == 0)
 195     {
 196       fprintf_filtered (outfile, "No minimal symbols found.\n");
 197       return;
 198     }
 199   index = 0;
 200   for (minimal_symbol *msymbol : objfile_msymbols (objfile))
 201     {
 202       struct obj_section *section = MSYMBOL_OBJ_SECTION (objfile, msymbol);
 203
 204       switch (MSYMBOL_TYPE (msymbol))
 205         {
 206         case mst_unknown:
 207           ms_type = 'u';
 208           break;
 209         case mst_text:
 210           ms_type = 'T';
 211           break;
 212         case mst_text_gnu_ifunc:
 213         case mst_data_gnu_ifunc:
 214           ms_type = 'i';
 215           break;
 216         case mst_solib_trampoline:
 217           ms_type = 'S';
 218           break;
 219         case mst_data:
 220           ms_type = 'D';
 221           break;
 222         case mst_bss:
 223           ms_type = 'B';
 224           break;
 225         case mst_abs:
 226           ms_type = 'A';
 227           break;
 228         case mst_file_text:
 229           ms_type = 't';
 230           break;
 231         case mst_file_data:
 232           ms_type = 'd';
 233           break;
 234         case mst_file_bss:
 235           ms_type = 'b';
 236           break;
 237         default:
 238           ms_type = '?';
 239           break;
 240         }
 241       fprintf_filtered (outfile, "[%2d] %c ", index, ms_type);
 242       fputs_filtered (paddress (gdbarch, MSYMBOL_VALUE_ADDRESS (objfile,
 243                                                                 msymbol)),
 244                       outfile);
 245       fprintf_filtered (outfile, " %s", MSYMBOL_LINKAGE_NAME (msymbol));
 246       if (section)
 247         {
 248           if (section->the_bfd_section != NULL)
 249             fprintf_filtered (outfile, " section %s",
 250                               bfd_section_name (objfile->obfd,
 251                                                 section->the_bfd_section));
 252           else
 253             fprintf_filtered (outfile, " spurious section %ld",
 254                               (long) (section - objfile->sections));
 255         }
 256       if (MSYMBOL_DEMANGLED_NAME (msymbol) != NULL)
 257         {
 258           fprintf_filtered (outfile, "  %s", MSYMBOL_DEMANGLED_NAME (msymbol));
 259         }
 260       if (msymbol->filename)
 261         fprintf_filtered (outfile, "  %s", msymbol->filename);
 262       fputs_filtered ("\n", outfile);
 263       index++;
 264     }
 265   if (objfile->per_bfd->minimal_symbol_count != index)
 266     {
 267       warning (_("internal error:  minimal symbol count %d != %d"),
 268                objfile->per_bfd->minimal_symbol_count, index);
 269     }
 270   fprintf_filtered (outfile, "\n");
 271 }
 272
 273 static void
 274 dump_symtab_1 (struct symtab *symtab, struct ui_file *outfile)
 275 {
 276   struct objfile *objfile = SYMTAB_OBJFILE (symtab);
 277   struct gdbarch *gdbarch = get_objfile_arch (objfile);
 278   int i;
 279   struct mdict_iterator miter;
 280   int len;
 281   struct linetable *l;
 282   const struct blockvector *bv;
 283   struct symbol *sym;
 284   struct block *b;
 285   int depth;
 286
 287   fprintf_filtered (outfile, "\nSymtab for file %s\n",
 288                     symtab_to_filename_for_display (symtab));
 289   if (SYMTAB_DIRNAME (symtab) != NULL)
 290     fprintf_filtered (outfile, "Compilation directory is %s\n",
 291                       SYMTAB_DIRNAME (symtab));
 292   fprintf_filtered (outfile, "Read from object file %s (",
 293                     objfile_name (objfile));
 294   gdb_print_host_address (objfile, outfile);
 295   fprintf_filtered (outfile, ")\n");
 296   fprintf_filtered (outfile, "Language: %s\n",
 297                     language_str (symtab->language));
 298
 299   /* First print the line table.  */
 300   l = SYMTAB_LINETABLE (symtab);
 301   if (l)
 302     {
 303       fprintf_filtered (outfile, "\nLine table:\n\n");
 304       len = l->nitems;
 305       for (i = 0; i < len; i++)
 306         {
 307           fprintf_filtered (outfile, " line %d at ", l->item[i].line);
 308           fputs_filtered (paddress (gdbarch, l->item[i].pc), outfile);
 309           fprintf_filtered (outfile, "\n");
 310         }
 311     }
 312   /* Now print the block info, but only for compunit symtabs since we will
 313      print lots of duplicate info otherwise.  */
 314   if (symtab == COMPUNIT_FILETABS (SYMTAB_COMPUNIT (symtab)))
 315     {
 316       fprintf_filtered (outfile, "\nBlockvector:\n\n");
 317       bv = SYMTAB_BLOCKVECTOR (symtab);
 318       len = BLOCKVECTOR_NBLOCKS (bv);
 319       for (i = 0; i < len; i++)
 320         {
 321           b = BLOCKVECTOR_BLOCK (bv, i);
 322           depth = block_depth (b) * 2;
 323           print_spaces (depth, outfile);
 324           fprintf_filtered (outfile, "block #%03d, object at ", i);
 325           gdb_print_host_address (b, outfile);
 326           if (BLOCK_SUPERBLOCK (b))
 327             {
 328               fprintf_filtered (outfile, " under ");
 329               gdb_print_host_address (BLOCK_SUPERBLOCK (b), outfile);
 330             }
 331           /* drow/2002-07-10: We could save the total symbols count
 332              even if we're using a hashtable, but nothing else but this message
 333              wants it.  */
 334           fprintf_filtered (outfile, ", %d syms/buckets in ",
 335                             mdict_size (BLOCK_MULTIDICT (b)));
 336           fputs_filtered (paddress (gdbarch, BLOCK_START (b)), outfile);
 337           fprintf_filtered (outfile, "..");
 338           fputs_filtered (paddress (gdbarch, BLOCK_END (b)), outfile);
 339           if (BLOCK_FUNCTION (b))
 340             {
 341               fprintf_filtered (outfile, ", function %s",
 342                                 SYMBOL_LINKAGE_NAME (BLOCK_FUNCTION (b)));
 343               if (SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b)) != NULL)
 344                 {
 345                   fprintf_filtered (outfile, ", %s",
 346                                 SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b)));
 347                 }
 348             }
 349           fprintf_filtered (outfile, "\n");
 350           /* Now print each symbol in this block (in no particular order, if
 351              we're using a hashtable).  Note that we only want this
 352              block, not any blocks from included symtabs.  */
 353           ALL_DICT_SYMBOLS (BLOCK_MULTIDICT (b), miter, sym)
 354             {
 355               TRY
 356                 {
 357                   print_symbol (gdbarch, sym, depth + 1, outfile);
 358                 }
 359               CATCH (ex, RETURN_MASK_ERROR)
 360                 {
 361                   exception_fprintf (gdb_stderr, ex,
 362                                      "Error printing symbol:\n");
 363                 }
 364               END_CATCH
 365             }
 366         }
 367       fprintf_filtered (outfile, "\n");
 368     }
 369   else
 370     {
 371       const char *compunit_filename
 372         = symtab_to_filename_for_display (COMPUNIT_FILETABS (SYMTAB_COMPUNIT (symtab)));
 373
 374       fprintf_filtered (outfile,
 375                         "\nBlockvector same as owning compunit: %s\n\n",
 376                         compunit_filename);
 377     }
 378 }
 379
 380 static void
 381 dump_symtab (struct symtab *symtab, struct ui_file *outfile)
 382 {
 383   /* Set the current language to the language of the symtab we're dumping
 384      because certain routines used during dump_symtab() use the current
 385      language to print an image of the symbol.  We'll restore it later.
 386      But use only real languages, not placeholders.  */
 387   if (symtab->language != language_unknown
 388       && symtab->language != language_auto)
 389     {
 390       enum language saved_lang;
 391
 392       saved_lang = set_language (symtab->language);
 393
 394       dump_symtab_1 (symtab, outfile);
 395
 396       set_language (saved_lang);
 397     }
 398   else
 399     dump_symtab_1 (symtab, outfile);
 400 }
 401
 402 static void
 403 maintenance_print_symbols (const char *args, int from_tty)
 404 {
 405   struct ui_file *outfile = gdb_stdout;
 406   char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
 407   int i, outfile_idx;
 408
 409   dont_repeat ();
 410
 411   gdb_argv argv (args);
 412
 413   for (i = 0; argv != NULL && argv[i] != NULL; ++i)
 414     {
 415       if (strcmp (argv[i], "-pc") == 0)
 416         {
 417           if (argv[i + 1] == NULL)
 418             error (_("Missing pc value"));
 419           address_arg = argv[++i];
 420         }
 421       else if (strcmp (argv[i], "-source") == 0)
 422         {
 423           if (argv[i + 1] == NULL)
 424             error (_("Missing source file"));
 425           source_arg = argv[++i];
 426         }
 427       else if (strcmp (argv[i], "-objfile") == 0)
 428         {
 429           if (argv[i + 1] == NULL)
 430             error (_("Missing objfile name"));
 431           objfile_arg = argv[++i];
 432         }
 433       else if (strcmp (argv[i], "--") == 0)
 434         {
 435           /* End of options.  */
 436           ++i;
 437           break;
 438         }
 439       else if (argv[i][0] == '-')
 440         {
 441           /* Future proofing: Don't allow OUTFILE to begin with "-".  */
 442           error (_("Unknown option: %s"), argv[i]);
 443         }
 444       else
 445         break;
 446     }
 447   outfile_idx = i;
 448
 449   if (address_arg != NULL && source_arg != NULL)
 450     error (_("Must specify at most one of -pc and -source"));
 451
 452   stdio_file arg_outfile;
 453
 454   if (argv != NULL && argv[outfile_idx] != NULL)
 455     {
 456       if (argv[outfile_idx + 1] != NULL)
 457         error (_("Junk at end of command"));
 458       gdb::unique_xmalloc_ptr<char> outfile_name
 459         (tilde_expand (argv[outfile_idx]));
 460       if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
 461         perror_with_name (outfile_name.get ());
 462       outfile = &arg_outfile;
 463     }
 464
 465   if (address_arg != NULL)
 466     {
 467       CORE_ADDR pc = parse_and_eval_address (address_arg);
 468       struct symtab *s = find_pc_line_symtab (pc);
 469
 470       if (s == NULL)
 471         error (_("No symtab for address: %s"), address_arg);
 472       dump_symtab (s, outfile);
 473     }
 474   else
 475     {
 476       int found = 0;
 477
 478       for (objfile *objfile : current_program_space->objfiles ())
 479         {
 480           int print_for_objfile = 1;
 481
 482           if (objfile_arg != NULL)
 483             print_for_objfile
 484               = compare_filenames_for_search (objfile_name (objfile),
 485                                               objfile_arg);
 486           if (!print_for_objfile)
 487             continue;
 488
 489           for (compunit_symtab *cu : objfile->compunits ())
 490             {
 491               for (symtab *s : compunit_filetabs (cu))
 492                 {
 493                   int print_for_source = 0;
 494
 495                   QUIT;
 496                   if (source_arg != NULL)
 497                     {
 498                       print_for_source
 499                         = compare_filenames_for_search
 500                         (symtab_to_filename_for_display (s), source_arg);
 501                       found = 1;
 502                     }
 503                   if (source_arg == NULL
 504                       || print_for_source)
 505                     dump_symtab (s, outfile);
 506                 }
 507             }
 508         }
 509
 510       if (source_arg != NULL && !found)
 511         error (_("No symtab for source file: %s"), source_arg);
 512     }
 513 }
 514
 515 /* Print symbol SYMBOL on OUTFILE.  DEPTH says how far to indent.  */
 516
 517 static void
 518 print_symbol (struct gdbarch *gdbarch, struct symbol *symbol,
 519               int depth, ui_file *outfile)
 520 {
 521   struct obj_section *section;
 522
 523   if (SYMBOL_OBJFILE_OWNED (symbol))
 524     section = SYMBOL_OBJ_SECTION (symbol_objfile (symbol), symbol);
 525   else
 526     section = NULL;
 527
 528   print_spaces (depth, outfile);
 529   if (SYMBOL_DOMAIN (symbol) == LABEL_DOMAIN)
 530     {
 531       fprintf_filtered (outfile, "label %s at ", SYMBOL_PRINT_NAME (symbol));
 532       fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 533                       outfile);
 534       if (section)
 535         fprintf_filtered (outfile, " section %s\n",
 536                           bfd_section_name (section->the_bfd_section->owner,
 537                                             section->the_bfd_section));
 538       else
 539         fprintf_filtered (outfile, "\n");
 540       return;
 541     }
 542
 543   if (SYMBOL_DOMAIN (symbol) == STRUCT_DOMAIN)
 544     {
 545       if (TYPE_NAME (SYMBOL_TYPE (symbol)))
 546         {
 547           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth,
 548                          &type_print_raw_options);
 549         }
 550       else
 551         {
 552           fprintf_filtered (outfile, "%s %s = ",
 553                          (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_ENUM
 554                           ? "enum"
 555                      : (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_STRUCT
 556                         ? "struct" : "union")),
 557                             SYMBOL_LINKAGE_NAME (symbol));
 558           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth,
 559                          &type_print_raw_options);
 560         }
 561       fprintf_filtered (outfile, ";\n");
 562     }
 563   else
 564     {
 565       if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF)
 566         fprintf_filtered (outfile, "typedef ");
 567       if (SYMBOL_TYPE (symbol))
 568         {
 569           /* Print details of types, except for enums where it's clutter.  */
 570           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), SYMBOL_PRINT_NAME (symbol),
 571                          outfile,
 572                          TYPE_CODE (SYMBOL_TYPE (symbol)) != TYPE_CODE_ENUM,
 573                          depth,
 574                          &type_print_raw_options);
 575           fprintf_filtered (outfile, "; ");
 576         }
 577       else
 578         fprintf_filtered (outfile, "%s ", SYMBOL_PRINT_NAME (symbol));
 579
 580       switch (SYMBOL_CLASS (symbol))
 581         {
 582         case LOC_CONST:
 583           fprintf_filtered (outfile, "const %s (%s)",
 584                             plongest (SYMBOL_VALUE (symbol)),
 585                             hex_string (SYMBOL_VALUE (symbol)));
 586           break;
 587
 588         case LOC_CONST_BYTES:
 589           {
 590             unsigned i;
 591             struct type *type = check_typedef (SYMBOL_TYPE (symbol));
 592
 593             fprintf_filtered (outfile, "const %u hex bytes:",
 594                               TYPE_LENGTH (type));
 595             for (i = 0; i < TYPE_LENGTH (type); i++)
 596               fprintf_filtered (outfile, " %02x",
 597                                 (unsigned) SYMBOL_VALUE_BYTES (symbol)[i]);
 598           }
 599           break;
 600
 601         case LOC_STATIC:
 602           fprintf_filtered (outfile, "static at ");
 603           fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 604                           outfile);
 605           if (section)
 606             fprintf_filtered (outfile, " section %s",
 607                               bfd_section_name (section->the_bfd_section->owner,
 608                                                 section->the_bfd_section));
 609           break;
 610
 611         case LOC_REGISTER:
 612           if (SYMBOL_IS_ARGUMENT (symbol))
 613             fprintf_filtered (outfile, "parameter register %s",
 614                               plongest (SYMBOL_VALUE (symbol)));
 615           else
 616             fprintf_filtered (outfile, "register %s",
 617                               plongest (SYMBOL_VALUE (symbol)));
 618           break;
 619
 620         case LOC_ARG:
 621           fprintf_filtered (outfile, "arg at offset %s",
 622                             hex_string (SYMBOL_VALUE (symbol)));
 623           break;
 624
 625         case LOC_REF_ARG:
 626           fprintf_filtered (outfile, "reference arg at %s",
 627                             hex_string (SYMBOL_VALUE (symbol)));
 628           break;
 629
 630         case LOC_REGPARM_ADDR:
 631           fprintf_filtered (outfile, "address parameter register %s",
 632                             plongest (SYMBOL_VALUE (symbol)));
 633           break;
 634
 635         case LOC_LOCAL:
 636           fprintf_filtered (outfile, "local at offset %s",
 637                             hex_string (SYMBOL_VALUE (symbol)));
 638           break;
 639
 640         case LOC_TYPEDEF:
 641           break;
 642
 643         case LOC_LABEL:
 644           fprintf_filtered (outfile, "label at ");
 645           fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 646                           outfile);
 647           if (section)
 648             fprintf_filtered (outfile, " section %s",
 649                               bfd_section_name (section->the_bfd_section->owner,
 650                                                 section->the_bfd_section));
 651           break;
 652
 653         case LOC_BLOCK:
 654           fprintf_filtered (outfile, "block object ");
 655           gdb_print_host_address (SYMBOL_BLOCK_VALUE (symbol), outfile);
 656           fprintf_filtered (outfile, ", ");
 657           fputs_filtered (paddress (gdbarch,
 658                                     BLOCK_START (SYMBOL_BLOCK_VALUE (symbol))),
 659                           outfile);
 660           fprintf_filtered (outfile, "..");
 661           fputs_filtered (paddress (gdbarch,
 662                                     BLOCK_END (SYMBOL_BLOCK_VALUE (symbol))),
 663                           outfile);
 664           if (section)
 665             fprintf_filtered (outfile, " section %s",
 666                               bfd_section_name (section->the_bfd_section->owner,
 667                                                 section->the_bfd_section));
 668           break;
 669
 670         case LOC_COMPUTED:
 671           fprintf_filtered (outfile, "computed at runtime");
 672           break;
 673
 674         case LOC_UNRESOLVED:
 675           fprintf_filtered (outfile, "unresolved");
 676           break;
 677
 678         case LOC_OPTIMIZED_OUT:
 679           fprintf_filtered (outfile, "optimized out");
 680           break;
 681
 682         default:
 683           fprintf_filtered (outfile, "botched symbol class %x",
 684                             SYMBOL_CLASS (symbol));
 685           break;
 686         }
 687     }
 688   fprintf_filtered (outfile, "\n");
 689 }
 690
 691 static void
 692 maintenance_print_msymbols (const char *args, int from_tty)
 693 {
 694   struct ui_file *outfile = gdb_stdout;
 695   char *objfile_arg = NULL;
 696   int i, outfile_idx;
 697
 698   dont_repeat ();
 699
 700   gdb_argv argv (args);
 701
 702   for (i = 0; argv != NULL && argv[i] != NULL; ++i)
 703     {
 704       if (strcmp (argv[i], "-objfile") == 0)
 705         {
 706           if (argv[i + 1] == NULL)
 707             error (_("Missing objfile name"));
 708           objfile_arg = argv[++i];
 709         }
 710       else if (strcmp (argv[i], "--") == 0)
 711         {
 712           /* End of options.  */
 713           ++i;
 714           break;
 715         }
 716       else if (argv[i][0] == '-')
 717         {
 718           /* Future proofing: Don't allow OUTFILE to begin with "-".  */
 719           error (_("Unknown option: %s"), argv[i]);
 720         }
 721       else
 722         break;
 723     }
 724   outfile_idx = i;
 725
 726   stdio_file arg_outfile;
 727
 728   if (argv != NULL && argv[outfile_idx] != NULL)
 729     {
 730       if (argv[outfile_idx + 1] != NULL)
 731         error (_("Junk at end of command"));
 732       gdb::unique_xmalloc_ptr<char> outfile_name
 733         (tilde_expand (argv[outfile_idx]));
 734       if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
 735         perror_with_name (outfile_name.get ());
 736       outfile = &arg_outfile;
 737     }
 738
 739   for (objfile *objfile : current_program_space->objfiles ())
 740     {
 741       QUIT;
 742       if (objfile_arg == NULL
 743           || compare_filenames_for_search (objfile_name (objfile), objfile_arg))
 744         dump_msymbols (objfile, outfile);
 745     }
 746 }
 747
 748 static void
 749 maintenance_print_objfiles (const char *regexp, int from_tty)
 750 {
 751   struct program_space *pspace;
 752
 753   dont_repeat ();
 754
 755   if (regexp)
 756     re_comp (regexp);
 757
 758   ALL_PSPACES (pspace)
 759     for (objfile *objfile : pspace->objfiles ())
 760       {
 761         QUIT;
 762         if (! regexp
 763             || re_exec (objfile_name (objfile)))
 764           dump_objfile (objfile);
 765       }
 766 }
 767
 768 /* List all the symbol tables whose names match REGEXP (optional).  */
 769
 770 static void
 771 maintenance_info_symtabs (const char *regexp, int from_tty)
 772 {
 773   struct program_space *pspace;
 774
 775   dont_repeat ();
 776
 777   if (regexp)
 778     re_comp (regexp);
 779
 780   ALL_PSPACES (pspace)
 781     for (objfile *objfile : pspace->objfiles ())
 782       {
 783         /* We don't want to print anything for this objfile until we
 784            actually find a symtab whose name matches.  */
 785         int printed_objfile_start = 0;
 786
 787         for (compunit_symtab *cust : objfile->compunits ())
 788           {
 789             int printed_compunit_symtab_start = 0;
 790
 791             for (symtab *symtab : compunit_filetabs (cust))
 792               {
 793                 QUIT;
 794
 795                 if (! regexp
 796                     || re_exec (symtab_to_filename_for_display (symtab)))
 797                   {
 798                     if (! printed_objfile_start)
 799                       {
 800                         printf_filtered ("{ objfile %s ", objfile_name (objfile));
 801                         wrap_here ("  ");
 802                         printf_filtered ("((struct objfile *) %s)\n",
 803                                          host_address_to_string (objfile));
 804                         printed_objfile_start = 1;
 805                       }
 806                     if (! printed_compunit_symtab_start)
 807                       {
 808                         printf_filtered ("  { ((struct compunit_symtab *) %s)\n",
 809                                          host_address_to_string (cust));
 810                         printf_filtered ("    debugformat %s\n",
 811                                          COMPUNIT_DEBUGFORMAT (cust));
 812                         printf_filtered ("    producer %s\n",
 813                                          COMPUNIT_PRODUCER (cust) != NULL
 814                                          ? COMPUNIT_PRODUCER (cust)
 815                                          : "(null)");
 816                         printf_filtered ("    dirname %s\n",
 817                                          COMPUNIT_DIRNAME (cust) != NULL
 818                                          ? COMPUNIT_DIRNAME (cust)
 819                                          : "(null)");
 820                         printf_filtered ("    blockvector"
 821                                          " ((struct blockvector *) %s)\n",
 822                                          host_address_to_string
 823                                          (COMPUNIT_BLOCKVECTOR (cust)));
 824                         printed_compunit_symtab_start = 1;
 825                       }
 826
 827                     printf_filtered ("\t{ symtab %s ",
 828                                      symtab_to_filename_for_display (symtab));
 829                     wrap_here ("    ");
 830                     printf_filtered ("((struct symtab *) %s)\n",
 831                                      host_address_to_string (symtab));
 832                     printf_filtered ("\t  fullname %s\n",
 833                                      symtab->fullname != NULL
 834                                      ? symtab->fullname
 835                                      : "(null)");
 836                     printf_filtered ("\t  "
 837                                      "linetable ((struct linetable *) %s)\n",
 838                                      host_address_to_string (symtab->linetable));
 839                     printf_filtered ("\t}\n");
 840                   }
 841               }
 842
 843             if (printed_compunit_symtab_start)
 844               printf_filtered ("  }\n");
 845           }
 846
 847         if (printed_objfile_start)
 848           printf_filtered ("}\n");
 849       }
 850 }
 851
 852 /* Check consistency of symtabs.
 853    An example of what this checks for is NULL blockvectors.
 854    They can happen if there's a bug during debug info reading.
 855    GDB assumes they are always non-NULL.
 856
 857    Note: This does not check for psymtab vs symtab consistency.
 858    Use "maint check-psymtabs" for that.  */
 859
 860 static void
 861 maintenance_check_symtabs (const char *ignore, int from_tty)
 862 {
 863   struct program_space *pspace;
 864
 865   ALL_PSPACES (pspace)
 866     for (objfile *objfile : pspace->objfiles ())
 867       {
 868         /* We don't want to print anything for this objfile until we
 869            actually find something worth printing.  */
 870         int printed_objfile_start = 0;
 871
 872         for (compunit_symtab *cust : objfile->compunits ())
 873           {
 874             int found_something = 0;
 875             struct symtab *symtab = compunit_primary_filetab (cust);
 876
 877             QUIT;
 878
 879             if (COMPUNIT_BLOCKVECTOR (cust) == NULL)
 880               found_something = 1;
 881             /* Add more checks here.  */
 882
 883             if (found_something)
 884               {
 885                 if (! printed_objfile_start)
 886                   {
 887                     printf_filtered ("{ objfile %s ", objfile_name (objfile));
 888                     wrap_here ("  ");
 889                     printf_filtered ("((struct objfile *) %s)\n",
 890                                      host_address_to_string (objfile));
 891                     printed_objfile_start = 1;
 892                   }
 893                 printf_filtered ("  { symtab %s\n",
 894                                  symtab_to_filename_for_display (symtab));
 895                 if (COMPUNIT_BLOCKVECTOR (cust) == NULL)
 896                   printf_filtered ("    NULL blockvector\n");
 897                 printf_filtered ("  }\n");
 898               }
 899           }
 900
 901         if (printed_objfile_start)
 902           printf_filtered ("}\n");
 903       }
 904 }
 905
 906 /* Expand all symbol tables whose name matches an optional regexp.  */
 907
 908 static void
 909 maintenance_expand_symtabs (const char *args, int from_tty)
 910 {
 911   struct program_space *pspace;
 912   char *regexp = NULL;
 913
 914   /* We use buildargv here so that we handle spaces in the regexp
 915      in a way that allows adding more arguments later.  */
 916   gdb_argv argv (args);
 917
 918   if (argv != NULL)
 919     {
 920       if (argv[0] != NULL)
 921         {
 922           regexp = argv[0];
 923           if (argv[1] != NULL)
 924             error (_("Extra arguments after regexp."));
 925         }
 926     }
 927
 928   if (regexp)
 929     re_comp (regexp);
 930
 931   ALL_PSPACES (pspace)
 932     for (objfile *objfile : pspace->objfiles ())
 933       {
 934         if (objfile->sf)
 935           {
 936             objfile->sf->qf->expand_symtabs_matching
 937               (objfile,
 938                [&] (const char *filename, bool basenames)
 939                {
 940                  /* KISS: Only apply the regexp to the complete file name.  */
 941                  return (!basenames
 942                          && (regexp == NULL || re_exec (filename)));
 943                },
 944                lookup_name_info::match_any (),
 945                [] (const char *symname)
 946                {
 947                  /* Since we're not searching on symbols, just return true.  */
 948                  return true;
 949                },
 950                NULL,
 951                ALL_DOMAIN);
 952           }
 953       }
 954 }
 955 \f
 956
 957 /* Return the nexting depth of a block within other blocks in its symtab.  */
 958
 959 static int
 960 block_depth (struct block *block)
 961 {
 962   int i = 0;
 963
 964   while ((block = BLOCK_SUPERBLOCK (block)) != NULL)
 965     {
 966       i++;
 967     }
 968   return i;
 969 }
 970 \f
 971
 972 /* Used by MAINTENANCE_INFO_LINE_TABLES to print the information about a
 973    single line table.  */
 974
 975 static int
 976 maintenance_print_one_line_table (struct symtab *symtab, void *data)
 977 {
 978   struct linetable *linetable;
 979   struct objfile *objfile;
 980
 981   objfile = symtab->compunit_symtab->objfile;
 982   printf_filtered (_("objfile: %s ((struct objfile *) %s)\n"),
 983                    objfile_name (objfile),
 984                    host_address_to_string (objfile));
 985   printf_filtered (_("compunit_symtab: ((struct compunit_symtab *) %s)\n"),
 986                    host_address_to_string (symtab->compunit_symtab));
 987   printf_filtered (_("symtab: %s ((struct symtab *) %s)\n"),
 988                    symtab_to_fullname (symtab),
 989                    host_address_to_string (symtab));
 990   linetable = SYMTAB_LINETABLE (symtab);
 991   printf_filtered (_("linetable: ((struct linetable *) %s):\n"),
 992                    host_address_to_string (linetable));
 993
 994   if (linetable == NULL)
 995     printf_filtered (_("No line table.\n"));
 996   else if (linetable->nitems <= 0)
 997     printf_filtered (_("Line table has no lines.\n"));
 998   else
 999     {
1000       int i;
1001
1002       /* Leave space for 6 digits of index and line number.  After that the
1003          tables will just not format as well.  */
1004       printf_filtered (_("%-6s %6s %s\n"),
1005                        _("INDEX"), _("LINE"), _("ADDRESS"));
1006
1007       for (i = 0; i < linetable->nitems; ++i)
1008         {
1009           struct linetable_entry *item;
1010
1011           item = &linetable->item [i];
1012           printf_filtered (_("%-6d %6d %s\n"), i, item->line,
1013                            core_addr_to_string (item->pc));
1014         }
1015     }
1016
1017   return 0;
1018 }
1019
1020 /* Implement the 'maint info line-table' command.  */
1021
1022 static void
1023 maintenance_info_line_tables (const char *regexp, int from_tty)
1024 {
1025   struct program_space *pspace;
1026
1027   dont_repeat ();
1028
1029   if (regexp != NULL)
1030     re_comp (regexp);
1031
1032   ALL_PSPACES (pspace)
1033     for (objfile *objfile : pspace->objfiles ())
1034       {
1035         for (compunit_symtab *cust : objfile->compunits ())
1036           {
1037             for (symtab *symtab : compunit_filetabs (cust))
1038               {
1039                 QUIT;
1040
1041                 if (regexp == NULL
1042                     || re_exec (symtab_to_filename_for_display (symtab)))
1043                   maintenance_print_one_line_table (symtab, NULL);
1044               }
1045           }
1046       }
1047 }
1048
1049 \f
1050
1051 /* Do early runtime initializations.  */
1052
1053 void
1054 _initialize_symmisc (void)
1055 {
1056   std_in = stdin;
1057   std_out = stdout;
1058   std_err = stderr;
1059
1060   add_cmd ("symbols", class_maintenance, maintenance_print_symbols, _("\
1061 Print dump of current symbol definitions.\n\
1062 Usage: mt print symbols [-pc ADDRESS] [--] [OUTFILE]\n\
1063        mt print symbols [-objfile OBJFILE] [-source SOURCE] [--] [OUTFILE]\n\
1064 Entries in the full symbol table are dumped to file OUTFILE,\n\
1065 or the terminal if OUTFILE is unspecified.\n\
1066 If ADDRESS is provided, dump only the file for that address.\n\
1067 If SOURCE is provided, dump only that file's symbols.\n\
1068 If OBJFILE is provided, dump only that file's minimal symbols."),
1069            &maintenanceprintlist);
1070
1071   add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols, _("\
1072 Print dump of current minimal symbol definitions.\n\
1073 Usage: mt print msymbols [-objfile OBJFILE] [--] [OUTFILE]\n\
1074 Entries in the minimal symbol table are dumped to file OUTFILE,\n\
1075 or the terminal if OUTFILE is unspecified.\n\
1076 If OBJFILE is provided, dump only that file's minimal symbols."),
1077            &maintenanceprintlist);
1078
1079   add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
1080            _("Print dump of current object file definitions.\n\
1081 With an argument REGEXP, list the object files with matching names."),
1082            &maintenanceprintlist);
1083
1084   add_cmd ("symtabs", class_maintenance, maintenance_info_symtabs, _("\
1085 List the full symbol tables for all object files.\n\
1086 This does not include information about individual symbols, blocks, or\n\
1087 linetables --- just the symbol table structures themselves.\n\
1088 With an argument REGEXP, list the symbol tables with matching names."),
1089            &maintenanceinfolist);
1090
1091   add_cmd ("line-table", class_maintenance, maintenance_info_line_tables, _("\
1092 List the contents of all line tables, from all symbol tables.\n\
1093 With an argument REGEXP, list just the line tables for the symbol\n\
1094 tables with matching names."),
1095            &maintenanceinfolist);
1096
1097   add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
1098            _("\
1099 Check consistency of currently expanded symtabs."),
1100            &maintenancelist);
1101
1102   add_cmd ("expand-symtabs", class_maintenance, maintenance_expand_symtabs,
1103            _("Expand symbol tables.\n\
1104 With an argument REGEXP, only expand the symbol tables with matching names."),
1105            &maintenancelist);
1106 }