gdb/symmisc.c

   1 /* Do various things to symbol tables (other than lookup), for GDB.
   2
   3    Copyright (C) 1986-2013 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 "exceptions.h"
  31 #include "language.h"
  32 #include "bcache.h"
  33 #include "block.h"
  34 #include "gdb_regex.h"
  35 #include "gdb_stat.h"
  36 #include "dictionary.h"
  37 #include "typeprint.h"
  38 #include "gdbcmd.h"
  39 #include "source.h"
  40
  41 #include "gdb_string.h"
  42 #include "readline/readline.h"
  43
  44 #include "psymtab.h"
  45
  46 #ifndef DEV_TTY
  47 #define DEV_TTY "/dev/tty"
  48 #endif
  49
  50 /* Unfortunately for debugging, stderr is usually a macro.  This is painful
  51    when calling functions that take FILE *'s from the debugger.
  52    So we make a variable which has the same value and which is accessible when
  53    debugging GDB with itself.  Because stdin et al need not be constants,
  54    we initialize them in the _initialize_symmisc function at the bottom
  55    of the file.  */
  56 FILE *std_in;
  57 FILE *std_out;
  58 FILE *std_err;
  59
  60 /* Prototypes for local functions */
  61
  62 static void dump_symtab (struct objfile *, struct symtab *,
  63                          struct ui_file *);
  64
  65 static void dump_msymbols (struct objfile *, struct ui_file *);
  66
  67 static void dump_objfile (struct objfile *);
  68
  69 static int block_depth (struct block *);
  70
  71 void _initialize_symmisc (void);
  72
  73 struct print_symbol_args
  74   {
  75     struct gdbarch *gdbarch;
  76     struct symbol *symbol;
  77     int depth;
  78     struct ui_file *outfile;
  79   };
  80
  81 static int print_symbol (void *);
  82 \f
  83
  84 void
  85 print_symbol_bcache_statistics (void)
  86 {
  87   struct program_space *pspace;
  88   struct objfile *objfile;
  89
  90   ALL_PSPACES (pspace)
  91     ALL_PSPACE_OBJFILES (pspace, objfile)
  92   {
  93     QUIT;
  94     printf_filtered (_("Byte cache statistics for '%s':\n"), objfile->name);
  95     print_bcache_statistics (psymbol_bcache_get_bcache (objfile->psymbol_cache),
  96                              "partial symbol cache");
  97     print_bcache_statistics (objfile->per_bfd->macro_cache,
  98                              "preprocessor macro cache");
  99     print_bcache_statistics (objfile->per_bfd->filename_cache,
 100                              "file name cache");
 101   }
 102 }
 103
 104 void
 105 print_objfile_statistics (void)
 106 {
 107   struct program_space *pspace;
 108   struct objfile *objfile;
 109   struct symtab *s;
 110   int i, linetables, blockvectors;
 111
 112   ALL_PSPACES (pspace)
 113     ALL_PSPACE_OBJFILES (pspace, objfile)
 114   {
 115     QUIT;
 116     printf_filtered (_("Statistics for '%s':\n"), objfile->name);
 117     if (OBJSTAT (objfile, n_stabs) > 0)
 118       printf_filtered (_("  Number of \"stab\" symbols read: %d\n"),
 119                        OBJSTAT (objfile, n_stabs));
 120     if (OBJSTAT (objfile, n_minsyms) > 0)
 121       printf_filtered (_("  Number of \"minimal\" symbols read: %d\n"),
 122                        OBJSTAT (objfile, n_minsyms));
 123     if (OBJSTAT (objfile, n_psyms) > 0)
 124       printf_filtered (_("  Number of \"partial\" symbols read: %d\n"),
 125                        OBJSTAT (objfile, n_psyms));
 126     if (OBJSTAT (objfile, n_syms) > 0)
 127       printf_filtered (_("  Number of \"full\" symbols read: %d\n"),
 128                        OBJSTAT (objfile, n_syms));
 129     if (OBJSTAT (objfile, n_types) > 0)
 130       printf_filtered (_("  Number of \"types\" defined: %d\n"),
 131                        OBJSTAT (objfile, n_types));
 132     if (objfile->sf)
 133       objfile->sf->qf->print_stats (objfile);
 134     i = linetables = blockvectors = 0;
 135     ALL_OBJFILE_SYMTABS (objfile, s)
 136       {
 137         i++;
 138         if (s->linetable != NULL)
 139           linetables++;
 140         if (s->primary == 1)
 141           blockvectors++;
 142       }
 143     printf_filtered (_("  Number of symbol tables: %d\n"), i);
 144     printf_filtered (_("  Number of symbol tables with line tables: %d\n"),
 145                      linetables);
 146     printf_filtered (_("  Number of symbol tables with blockvectors: %d\n"),
 147                      blockvectors);
 148
 149     if (OBJSTAT (objfile, sz_strtab) > 0)
 150       printf_filtered (_("  Space used by a.out string tables: %d\n"),
 151                        OBJSTAT (objfile, sz_strtab));
 152     printf_filtered (_("  Total memory used for objfile obstack: %d\n"),
 153                      obstack_memory_used (&objfile->objfile_obstack));
 154     printf_filtered (_("  Total memory used for BFD obstack: %d\n"),
 155                      obstack_memory_used (&objfile->per_bfd->storage_obstack));
 156     printf_filtered (_("  Total memory used for psymbol cache: %d\n"),
 157                      bcache_memory_used (psymbol_bcache_get_bcache
 158                                           (objfile->psymbol_cache)));
 159     printf_filtered (_("  Total memory used for macro cache: %d\n"),
 160                      bcache_memory_used (objfile->per_bfd->macro_cache));
 161     printf_filtered (_("  Total memory used for file name cache: %d\n"),
 162                      bcache_memory_used (objfile->per_bfd->filename_cache));
 163   }
 164 }
 165
 166 static void
 167 dump_objfile (struct objfile *objfile)
 168 {
 169   struct symtab *symtab;
 170
 171   printf_filtered ("\nObject file %s:  ", objfile->name);
 172   printf_filtered ("Objfile at ");
 173   gdb_print_host_address (objfile, gdb_stdout);
 174   printf_filtered (", bfd at ");
 175   gdb_print_host_address (objfile->obfd, gdb_stdout);
 176   printf_filtered (", %d minsyms\n\n",
 177                    objfile->minimal_symbol_count);
 178
 179   if (objfile->sf)
 180     objfile->sf->qf->dump (objfile);
 181
 182   if (objfile->symtabs)
 183     {
 184       printf_filtered ("Symtabs:\n");
 185       for (symtab = objfile->symtabs;
 186            symtab != NULL;
 187            symtab = symtab->next)
 188         {
 189           printf_filtered ("%s at ", symtab_to_filename_for_display (symtab));
 190           gdb_print_host_address (symtab, gdb_stdout);
 191           printf_filtered (", ");
 192           if (symtab->objfile != objfile)
 193             {
 194               printf_filtered ("NOT ON CHAIN!  ");
 195             }
 196           wrap_here ("  ");
 197         }
 198       printf_filtered ("\n\n");
 199     }
 200 }
 201
 202 /* Print minimal symbols from this objfile.  */
 203
 204 static void
 205 dump_msymbols (struct objfile *objfile, struct ui_file *outfile)
 206 {
 207   struct gdbarch *gdbarch = get_objfile_arch (objfile);
 208   struct minimal_symbol *msymbol;
 209   int index;
 210   char ms_type;
 211
 212   fprintf_filtered (outfile, "\nObject file %s:\n\n", objfile->name);
 213   if (objfile->minimal_symbol_count == 0)
 214     {
 215       fprintf_filtered (outfile, "No minimal symbols found.\n");
 216       return;
 217     }
 218   index = 0;
 219   ALL_OBJFILE_MSYMBOLS (objfile, msymbol)
 220     {
 221       struct obj_section *section = SYMBOL_OBJ_SECTION (objfile, msymbol);
 222
 223       switch (MSYMBOL_TYPE (msymbol))
 224         {
 225         case mst_unknown:
 226           ms_type = 'u';
 227           break;
 228         case mst_text:
 229           ms_type = 'T';
 230           break;
 231         case mst_text_gnu_ifunc:
 232           ms_type = 'i';
 233           break;
 234         case mst_solib_trampoline:
 235           ms_type = 'S';
 236           break;
 237         case mst_data:
 238           ms_type = 'D';
 239           break;
 240         case mst_bss:
 241           ms_type = 'B';
 242           break;
 243         case mst_abs:
 244           ms_type = 'A';
 245           break;
 246         case mst_file_text:
 247           ms_type = 't';
 248           break;
 249         case mst_file_data:
 250           ms_type = 'd';
 251           break;
 252         case mst_file_bss:
 253           ms_type = 'b';
 254           break;
 255         default:
 256           ms_type = '?';
 257           break;
 258         }
 259       fprintf_filtered (outfile, "[%2d] %c ", index, ms_type);
 260       fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msymbol)),
 261                       outfile);
 262       fprintf_filtered (outfile, " %s", SYMBOL_LINKAGE_NAME (msymbol));
 263       if (section)
 264         {
 265           if (section->the_bfd_section != NULL)
 266             fprintf_filtered (outfile, " section %s",
 267                               bfd_section_name (objfile->obfd,
 268                                                 section->the_bfd_section));
 269           else
 270             fprintf_filtered (outfile, " spurious section %ld",
 271                               (long) (section - objfile->sections));
 272         }
 273       if (SYMBOL_DEMANGLED_NAME (msymbol) != NULL)
 274         {
 275           fprintf_filtered (outfile, "  %s", SYMBOL_DEMANGLED_NAME (msymbol));
 276         }
 277       if (msymbol->filename)
 278         fprintf_filtered (outfile, "  %s", msymbol->filename);
 279       fputs_filtered ("\n", outfile);
 280       index++;
 281     }
 282   if (objfile->minimal_symbol_count != index)
 283     {
 284       warning (_("internal error:  minimal symbol count %d != %d"),
 285                objfile->minimal_symbol_count, index);
 286     }
 287   fprintf_filtered (outfile, "\n");
 288 }
 289
 290 static void
 291 dump_symtab_1 (struct objfile *objfile, struct symtab *symtab,
 292                struct ui_file *outfile)
 293 {
 294   struct gdbarch *gdbarch = get_objfile_arch (objfile);
 295   int i;
 296   struct dict_iterator iter;
 297   int len;
 298   struct linetable *l;
 299   struct blockvector *bv;
 300   struct symbol *sym;
 301   struct block *b;
 302   int depth;
 303
 304   fprintf_filtered (outfile, "\nSymtab for file %s\n",
 305                     symtab_to_filename_for_display (symtab));
 306   if (symtab->dirname)
 307     fprintf_filtered (outfile, "Compilation directory is %s\n",
 308                       symtab->dirname);
 309   fprintf_filtered (outfile, "Read from object file %s (", objfile->name);
 310   gdb_print_host_address (objfile, outfile);
 311   fprintf_filtered (outfile, ")\n");
 312   fprintf_filtered (outfile, "Language: %s\n",
 313                     language_str (symtab->language));
 314
 315   /* First print the line table.  */
 316   l = LINETABLE (symtab);
 317   if (l)
 318     {
 319       fprintf_filtered (outfile, "\nLine table:\n\n");
 320       len = l->nitems;
 321       for (i = 0; i < len; i++)
 322         {
 323           fprintf_filtered (outfile, " line %d at ", l->item[i].line);
 324           fputs_filtered (paddress (gdbarch, l->item[i].pc), outfile);
 325           fprintf_filtered (outfile, "\n");
 326         }
 327     }
 328   /* Now print the block info, but only for primary symtabs since we will
 329      print lots of duplicate info otherwise.  */
 330   if (symtab->primary)
 331     {
 332       fprintf_filtered (outfile, "\nBlockvector:\n\n");
 333       bv = BLOCKVECTOR (symtab);
 334       len = BLOCKVECTOR_NBLOCKS (bv);
 335       for (i = 0; i < len; i++)
 336         {
 337           b = BLOCKVECTOR_BLOCK (bv, i);
 338           depth = block_depth (b) * 2;
 339           print_spaces (depth, outfile);
 340           fprintf_filtered (outfile, "block #%03d, object at ", i);
 341           gdb_print_host_address (b, outfile);
 342           if (BLOCK_SUPERBLOCK (b))
 343             {
 344               fprintf_filtered (outfile, " under ");
 345               gdb_print_host_address (BLOCK_SUPERBLOCK (b), outfile);
 346             }
 347           /* drow/2002-07-10: We could save the total symbols count
 348              even if we're using a hashtable, but nothing else but this message
 349              wants it.  */
 350           fprintf_filtered (outfile, ", %d syms/buckets in ",
 351                             dict_size (BLOCK_DICT (b)));
 352           fputs_filtered (paddress (gdbarch, BLOCK_START (b)), outfile);
 353           fprintf_filtered (outfile, "..");
 354           fputs_filtered (paddress (gdbarch, BLOCK_END (b)), outfile);
 355           if (BLOCK_FUNCTION (b))
 356             {
 357               fprintf_filtered (outfile, ", function %s",
 358                                 SYMBOL_LINKAGE_NAME (BLOCK_FUNCTION (b)));
 359               if (SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b)) != NULL)
 360                 {
 361                   fprintf_filtered (outfile, ", %s",
 362                                 SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b)));
 363                 }
 364             }
 365           fprintf_filtered (outfile, "\n");
 366           /* Now print each symbol in this block (in no particular order, if
 367              we're using a hashtable).  Note that we only want this
 368              block, not any blocks from included symtabs.  */
 369           ALL_DICT_SYMBOLS (BLOCK_DICT (b), iter, sym)
 370             {
 371               struct print_symbol_args s;
 372
 373               s.gdbarch = gdbarch;
 374               s.symbol = sym;
 375               s.depth = depth + 1;
 376               s.outfile = outfile;
 377               catch_errors (print_symbol, &s, "Error printing symbol:\n",
 378                             RETURN_MASK_ERROR);
 379             }
 380         }
 381       fprintf_filtered (outfile, "\n");
 382     }
 383   else
 384     {
 385       fprintf_filtered (outfile, "\nBlockvector same as previous symtab\n\n");
 386     }
 387 }
 388
 389 static void
 390 dump_symtab (struct objfile *objfile, struct symtab *symtab,
 391              struct ui_file *outfile)
 392 {
 393   /* Set the current language to the language of the symtab we're dumping
 394      because certain routines used during dump_symtab() use the current
 395      language to print an image of the symbol.  We'll restore it later.
 396      But use only real languages, not placeholders.  */
 397   if (symtab->language != language_unknown
 398       && symtab->language != language_auto)
 399     {
 400       enum language saved_lang;
 401
 402       saved_lang = set_language (symtab->language);
 403
 404       dump_symtab_1 (objfile, symtab, outfile);
 405
 406       set_language (saved_lang);
 407     }
 408   else
 409     dump_symtab_1 (objfile, symtab, outfile);
 410 }
 411
 412 static void
 413 maintenance_print_symbols (char *args, int from_tty)
 414 {
 415   char **argv;
 416   struct ui_file *outfile;
 417   struct cleanup *cleanups;
 418   char *symname = NULL;
 419   char *filename = DEV_TTY;
 420   struct objfile *objfile;
 421   struct symtab *s;
 422
 423   dont_repeat ();
 424
 425   if (args == NULL)
 426     {
 427       error (_("Arguments missing: an output file name "
 428                "and an optional symbol file name"));
 429     }
 430   argv = gdb_buildargv (args);
 431   cleanups = make_cleanup_freeargv (argv);
 432
 433   if (argv[0] != NULL)
 434     {
 435       filename = argv[0];
 436       /* If a second arg is supplied, it is a source file name to match on.  */
 437       if (argv[1] != NULL)
 438         {
 439           symname = argv[1];
 440         }
 441     }
 442
 443   filename = tilde_expand (filename);
 444   make_cleanup (xfree, filename);
 445
 446   outfile = gdb_fopen (filename, FOPEN_WT);
 447   if (outfile == 0)
 448     perror_with_name (filename);
 449   make_cleanup_ui_file_delete (outfile);
 450
 451   ALL_SYMTABS (objfile, s)
 452     {
 453       QUIT;
 454       if (symname == NULL
 455           || filename_cmp (symname, symtab_to_filename_for_display (s)) == 0)
 456         dump_symtab (objfile, s, outfile);
 457     }
 458   do_cleanups (cleanups);
 459 }
 460
 461 /* Print symbol ARGS->SYMBOL on ARGS->OUTFILE.  ARGS->DEPTH says how
 462    far to indent.  ARGS is really a struct print_symbol_args *, but is
 463    declared as char * to get it past catch_errors.  Returns 0 for error,
 464    1 for success.  */
 465
 466 static int
 467 print_symbol (void *args)
 468 {
 469   struct gdbarch *gdbarch = ((struct print_symbol_args *) args)->gdbarch;
 470   struct symbol *symbol = ((struct print_symbol_args *) args)->symbol;
 471   int depth = ((struct print_symbol_args *) args)->depth;
 472   struct ui_file *outfile = ((struct print_symbol_args *) args)->outfile;
 473   struct obj_section *section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (symbol),
 474                                                     symbol);
 475
 476   print_spaces (depth, outfile);
 477   if (SYMBOL_DOMAIN (symbol) == LABEL_DOMAIN)
 478     {
 479       fprintf_filtered (outfile, "label %s at ", SYMBOL_PRINT_NAME (symbol));
 480       fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 481                       outfile);
 482       if (section)
 483         fprintf_filtered (outfile, " section %s\n",
 484                           bfd_section_name (section->the_bfd_section->owner,
 485                                             section->the_bfd_section));
 486       else
 487         fprintf_filtered (outfile, "\n");
 488       return 1;
 489     }
 490   if (SYMBOL_DOMAIN (symbol) == STRUCT_DOMAIN)
 491     {
 492       if (TYPE_TAG_NAME (SYMBOL_TYPE (symbol)))
 493         {
 494           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth,
 495                          &type_print_raw_options);
 496         }
 497       else
 498         {
 499           fprintf_filtered (outfile, "%s %s = ",
 500                          (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_ENUM
 501                           ? "enum"
 502                      : (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_STRUCT
 503                         ? "struct" : "union")),
 504                             SYMBOL_LINKAGE_NAME (symbol));
 505           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth,
 506                          &type_print_raw_options);
 507         }
 508       fprintf_filtered (outfile, ";\n");
 509     }
 510   else
 511     {
 512       if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF)
 513         fprintf_filtered (outfile, "typedef ");
 514       if (SYMBOL_TYPE (symbol))
 515         {
 516           /* Print details of types, except for enums where it's clutter.  */
 517           LA_PRINT_TYPE (SYMBOL_TYPE (symbol), SYMBOL_PRINT_NAME (symbol),
 518                          outfile,
 519                          TYPE_CODE (SYMBOL_TYPE (symbol)) != TYPE_CODE_ENUM,
 520                          depth,
 521                          &type_print_raw_options);
 522           fprintf_filtered (outfile, "; ");
 523         }
 524       else
 525         fprintf_filtered (outfile, "%s ", SYMBOL_PRINT_NAME (symbol));
 526
 527       switch (SYMBOL_CLASS (symbol))
 528         {
 529         case LOC_CONST:
 530           fprintf_filtered (outfile, "const %s (%s)",
 531                             plongest (SYMBOL_VALUE (symbol)),
 532                             hex_string (SYMBOL_VALUE (symbol)));
 533           break;
 534
 535         case LOC_CONST_BYTES:
 536           {
 537             unsigned i;
 538             struct type *type = check_typedef (SYMBOL_TYPE (symbol));
 539
 540             fprintf_filtered (outfile, "const %u hex bytes:",
 541                               TYPE_LENGTH (type));
 542             for (i = 0; i < TYPE_LENGTH (type); i++)
 543               fprintf_filtered (outfile, " %02x",
 544                                 (unsigned) SYMBOL_VALUE_BYTES (symbol)[i]);
 545           }
 546           break;
 547
 548         case LOC_STATIC:
 549           fprintf_filtered (outfile, "static at ");
 550           fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 551                           outfile);
 552           if (section)
 553             fprintf_filtered (outfile, " section %s",
 554                               bfd_section_name (section->the_bfd_section->owner,
 555                                                 section->the_bfd_section));
 556           break;
 557
 558         case LOC_REGISTER:
 559           if (SYMBOL_IS_ARGUMENT (symbol))
 560             fprintf_filtered (outfile, "parameter register %s",
 561                               plongest (SYMBOL_VALUE (symbol)));
 562           else
 563             fprintf_filtered (outfile, "register %s",
 564                               plongest (SYMBOL_VALUE (symbol)));
 565           break;
 566
 567         case LOC_ARG:
 568           fprintf_filtered (outfile, "arg at offset %s",
 569                             hex_string (SYMBOL_VALUE (symbol)));
 570           break;
 571
 572         case LOC_REF_ARG:
 573           fprintf_filtered (outfile, "reference arg at %s",
 574                             hex_string (SYMBOL_VALUE (symbol)));
 575           break;
 576
 577         case LOC_REGPARM_ADDR:
 578           fprintf_filtered (outfile, "address parameter register %s",
 579                             plongest (SYMBOL_VALUE (symbol)));
 580           break;
 581
 582         case LOC_LOCAL:
 583           fprintf_filtered (outfile, "local at offset %s",
 584                             hex_string (SYMBOL_VALUE (symbol)));
 585           break;
 586
 587         case LOC_TYPEDEF:
 588           break;
 589
 590         case LOC_LABEL:
 591           fprintf_filtered (outfile, "label at ");
 592           fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)),
 593                           outfile);
 594           if (section)
 595             fprintf_filtered (outfile, " section %s",
 596                               bfd_section_name (section->the_bfd_section->owner,
 597                                                 section->the_bfd_section));
 598           break;
 599
 600         case LOC_BLOCK:
 601           fprintf_filtered (outfile, "block object ");
 602           gdb_print_host_address (SYMBOL_BLOCK_VALUE (symbol), outfile);
 603           fprintf_filtered (outfile, ", ");
 604           fputs_filtered (paddress (gdbarch,
 605                                     BLOCK_START (SYMBOL_BLOCK_VALUE (symbol))),
 606                           outfile);
 607           fprintf_filtered (outfile, "..");
 608           fputs_filtered (paddress (gdbarch,
 609                                     BLOCK_END (SYMBOL_BLOCK_VALUE (symbol))),
 610                           outfile);
 611           if (section)
 612             fprintf_filtered (outfile, " section %s",
 613                               bfd_section_name (section->the_bfd_section->owner,
 614                                                 section->the_bfd_section));
 615           break;
 616
 617         case LOC_COMPUTED:
 618           fprintf_filtered (outfile, "computed at runtime");
 619           break;
 620
 621         case LOC_UNRESOLVED:
 622           fprintf_filtered (outfile, "unresolved");
 623           break;
 624
 625         case LOC_OPTIMIZED_OUT:
 626           fprintf_filtered (outfile, "optimized out");
 627           break;
 628
 629         default:
 630           fprintf_filtered (outfile, "botched symbol class %x",
 631                             SYMBOL_CLASS (symbol));
 632           break;
 633         }
 634     }
 635   fprintf_filtered (outfile, "\n");
 636   return 1;
 637 }
 638
 639 static void
 640 maintenance_print_msymbols (char *args, int from_tty)
 641 {
 642   char **argv;
 643   struct ui_file *outfile;
 644   struct cleanup *cleanups;
 645   char *filename = DEV_TTY;
 646   char *symname = NULL;
 647   struct program_space *pspace;
 648   struct objfile *objfile;
 649
 650   struct stat sym_st, obj_st;
 651
 652   dont_repeat ();
 653
 654   if (args == NULL)
 655     {
 656       error (_("print-msymbols takes an output file "
 657                "name and optional symbol file name"));
 658     }
 659   argv = gdb_buildargv (args);
 660   cleanups = make_cleanup_freeargv (argv);
 661
 662   if (argv[0] != NULL)
 663     {
 664       filename = argv[0];
 665       /* If a second arg is supplied, it is a source file name to match on.  */
 666       if (argv[1] != NULL)
 667         {
 668           symname = gdb_realpath (argv[1]);
 669           make_cleanup (xfree, symname);
 670           if (symname && stat (symname, &sym_st))
 671             perror_with_name (symname);
 672         }
 673     }
 674
 675   filename = tilde_expand (filename);
 676   make_cleanup (xfree, filename);
 677
 678   outfile = gdb_fopen (filename, FOPEN_WT);
 679   if (outfile == 0)
 680     perror_with_name (filename);
 681   make_cleanup_ui_file_delete (outfile);
 682
 683   ALL_PSPACES (pspace)
 684     ALL_PSPACE_OBJFILES (pspace, objfile)
 685       {
 686         QUIT;
 687         if (symname == NULL || (!stat (objfile->name, &obj_st)
 688                                 && sym_st.st_dev == obj_st.st_dev
 689                                 && sym_st.st_ino == obj_st.st_ino))
 690           dump_msymbols (objfile, outfile);
 691       }
 692   fprintf_filtered (outfile, "\n\n");
 693   do_cleanups (cleanups);
 694 }
 695
 696 static void
 697 maintenance_print_objfiles (char *ignore, int from_tty)
 698 {
 699   struct program_space *pspace;
 700   struct objfile *objfile;
 701
 702   dont_repeat ();
 703
 704   ALL_PSPACES (pspace)
 705     ALL_PSPACE_OBJFILES (pspace, objfile)
 706       {
 707         QUIT;
 708         dump_objfile (objfile);
 709       }
 710 }
 711
 712 /* List all the symbol tables whose names match REGEXP (optional).  */
 713
 714 static void
 715 maintenance_info_symtabs (char *regexp, int from_tty)
 716 {
 717   struct program_space *pspace;
 718   struct objfile *objfile;
 719
 720   if (regexp)
 721     re_comp (regexp);
 722
 723   ALL_PSPACES (pspace)
 724     ALL_PSPACE_OBJFILES (pspace, objfile)
 725     {
 726       struct symtab *symtab;
 727
 728       /* We don't want to print anything for this objfile until we
 729          actually find a symtab whose name matches.  */
 730       int printed_objfile_start = 0;
 731
 732       ALL_OBJFILE_SYMTABS (objfile, symtab)
 733         {
 734           QUIT;
 735
 736           if (! regexp
 737               || re_exec (symtab_to_filename_for_display (symtab)))
 738             {
 739               if (! printed_objfile_start)
 740                 {
 741                   printf_filtered ("{ objfile %s ", objfile->name);
 742                   wrap_here ("  ");
 743                   printf_filtered ("((struct objfile *) %s)\n",
 744                                    host_address_to_string (objfile));
 745                   printed_objfile_start = 1;
 746                 }
 747
 748               printf_filtered ("        { symtab %s ",
 749                                symtab_to_filename_for_display (symtab));
 750               wrap_here ("    ");
 751               printf_filtered ("((struct symtab *) %s)\n",
 752                                host_address_to_string (symtab));
 753               printf_filtered ("          dirname %s\n",
 754                                symtab->dirname ? symtab->dirname : "(null)");
 755               printf_filtered ("          fullname %s\n",
 756                                symtab->fullname ? symtab->fullname : "(null)");
 757               printf_filtered ("          "
 758                                "blockvector ((struct blockvector *) %s)%s\n",
 759                                host_address_to_string (symtab->blockvector),
 760                                symtab->primary ? " (primary)" : "");
 761               printf_filtered ("          "
 762                                "linetable ((struct linetable *) %s)\n",
 763                                host_address_to_string (symtab->linetable));
 764               printf_filtered ("          debugformat %s\n",
 765                                symtab->debugformat);
 766               printf_filtered ("        }\n");
 767             }
 768         }
 769
 770       if (printed_objfile_start)
 771         printf_filtered ("}\n");
 772     }
 773 }
 774
 775 /* Check consistency of symtabs.
 776    An example of what this checks for is NULL blockvectors.
 777    They can happen if there's a bug during debug info reading.
 778    GDB assumes they are always non-NULL.
 779
 780    Note: This does not check for psymtab vs symtab consistency.
 781    Use "maint check-psymtabs" for that.  */
 782
 783 static void
 784 maintenance_check_symtabs (char *ignore, int from_tty)
 785 {
 786   struct program_space *pspace;
 787   struct objfile *objfile;
 788
 789   ALL_PSPACES (pspace)
 790     ALL_PSPACE_OBJFILES (pspace, objfile)
 791     {
 792       struct symtab *symtab;
 793
 794       /* We don't want to print anything for this objfile until we
 795          actually find something worth printing.  */
 796       int printed_objfile_start = 0;
 797
 798       ALL_OBJFILE_SYMTABS (objfile, symtab)
 799         {
 800           int found_something = 0;
 801
 802           QUIT;
 803
 804           if (symtab->blockvector == NULL)
 805             found_something = 1;
 806           /* Add more checks here.  */
 807
 808           if (found_something)
 809             {
 810               if (! printed_objfile_start)
 811                 {
 812                   printf_filtered ("{ objfile %s ", objfile->name);
 813                   wrap_here ("  ");
 814                   printf_filtered ("((struct objfile *) %s)\n",
 815                                    host_address_to_string (objfile));
 816                   printed_objfile_start = 1;
 817                 }
 818               printf_filtered ("  { symtab %s\n",
 819                                symtab_to_filename_for_display (symtab));
 820               if (symtab->blockvector == NULL)
 821                 printf_filtered ("    NULL blockvector\n");
 822               printf_filtered ("  }\n");
 823             }
 824         }
 825
 826       if (printed_objfile_start)
 827         printf_filtered ("}\n");
 828     }
 829 }
 830
 831 /* Helper function for maintenance_expand_symtabs.
 832    This is the name_matcher function for expand_symtabs_matching.  */
 833
 834 static int
 835 maintenance_expand_name_matcher (const char *symname, void *data)
 836 {
 837   /* Since we're not searching on symbols, just return TRUE.  */
 838   return 1;
 839 }
 840
 841 /* Helper function for maintenance_expand_symtabs.
 842    This is the file_matcher function for expand_symtabs_matching.  */
 843
 844 static int
 845 maintenance_expand_file_matcher (const char *filename, void *data,
 846                                  int basenames)
 847 {
 848   const char *regexp = data;
 849
 850   QUIT;
 851
 852   /* KISS: Only apply the regexp to the complete file name.  */
 853   if (basenames)
 854     return 0;
 855
 856   if (regexp == NULL || re_exec (filename))
 857     return 1;
 858
 859   return 0;
 860 }
 861
 862 /* Expand all symbol tables whose name matches an optional regexp.  */
 863
 864 static void
 865 maintenance_expand_symtabs (char *args, int from_tty)
 866 {
 867   struct program_space *pspace;
 868   struct objfile *objfile;
 869   struct cleanup *cleanups;
 870   char **argv;
 871   char *regexp = NULL;
 872
 873   /* We use buildargv here so that we handle spaces in the regexp
 874      in a way that allows adding more arguments later.  */
 875   argv = gdb_buildargv (args);
 876   cleanups = make_cleanup_freeargv (argv);
 877
 878   if (argv != NULL)
 879     {
 880       if (argv[0] != NULL)
 881         {
 882           regexp = argv[0];
 883           if (argv[1] != NULL)
 884             error (_("Extra arguments after regexp."));
 885         }
 886     }
 887
 888   if (regexp)
 889     re_comp (regexp);
 890
 891   ALL_PSPACES (pspace)
 892     ALL_PSPACE_OBJFILES (pspace, objfile)
 893     {
 894       if (objfile->sf)
 895         {
 896           objfile->sf->qf->expand_symtabs_matching
 897             (objfile, maintenance_expand_file_matcher,
 898              maintenance_expand_name_matcher, ALL_DOMAIN, regexp);
 899         }
 900     }
 901
 902   do_cleanups (cleanups);
 903 }
 904 \f
 905
 906 /* Return the nexting depth of a block within other blocks in its symtab.  */
 907
 908 static int
 909 block_depth (struct block *block)
 910 {
 911   int i = 0;
 912
 913   while ((block = BLOCK_SUPERBLOCK (block)) != NULL)
 914     {
 915       i++;
 916     }
 917   return i;
 918 }
 919 \f
 920
 921 /* Do early runtime initializations.  */
 922
 923 void
 924 _initialize_symmisc (void)
 925 {
 926   std_in = stdin;
 927   std_out = stdout;
 928   std_err = stderr;
 929
 930   add_cmd ("symbols", class_maintenance, maintenance_print_symbols, _("\
 931 Print dump of current symbol definitions.\n\
 932 Entries in the full symbol table are dumped to file OUTFILE.\n\
 933 If a SOURCE file is specified, dump only that file's symbols."),
 934            &maintenanceprintlist);
 935
 936   add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols, _("\
 937 Print dump of current minimal symbol definitions.\n\
 938 Entries in the minimal symbol table are dumped to file OUTFILE.\n\
 939 If a SOURCE file is specified, dump only that file's minimal symbols."),
 940            &maintenanceprintlist);
 941
 942   add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
 943            _("Print dump of current object file definitions."),
 944            &maintenanceprintlist);
 945
 946   add_cmd ("symtabs", class_maintenance, maintenance_info_symtabs, _("\
 947 List the full symbol tables for all object files.\n\
 948 This does not include information about individual symbols, blocks, or\n\
 949 linetables --- just the symbol table structures themselves.\n\
 950 With an argument REGEXP, list the symbol tables whose names that match that."),
 951            &maintenanceinfolist);
 952
 953   add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
 954            _("\
 955 Check consistency of currently expanded symtabs."),
 956            &maintenancelist);
 957
 958   add_cmd ("expand-symtabs", class_maintenance, maintenance_expand_symtabs,
 959            _("Expand symbol tables.\n\
 960 With an argument REGEXP, only expand the symbol tables with matching names."),
 961            &maintenancelist);
 962 }