binutils/size.c

   1 /* size.c -- report size of various sections of an executable file.
   2    Copyright (C) 1991-2017 Free Software Foundation, Inc.
   3
   4    This file is part of GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20 \f
  21 /* Extensions/incompatibilities:
  22    o - BSD output has filenames at the end.
  23    o - BSD output can appear in different radicies.
  24    o - SysV output has less redundant whitespace.  Filename comes at end.
  25    o - SysV output doesn't show VMA which is always the same as the PMA.
  26    o - We also handle core files.
  27    o - We also handle archives.
  28    If you write shell scripts which manipulate this info then you may be
  29    out of luck; there's no --compatibility or --pedantic option.  */
  30
  31 #include "sysdep.h"
  32 #include "bfd.h"
  33 #include "libiberty.h"
  34 #include "getopt.h"
  35 #include "bucomm.h"
  36
  37 #ifndef BSD_DEFAULT
  38 #define BSD_DEFAULT 1
  39 #endif
  40
  41 /* Program options.  */
  42
  43 static enum
  44   {
  45     decimal, octal, hex
  46   }
  47 radix = decimal;
  48
  49 /* 0 means use AT&T-style output.  */
  50 static int berkeley_format = BSD_DEFAULT;
  51
  52 static int show_version = 0;
  53 static int show_help = 0;
  54 static int show_totals = 0;
  55 static int show_common = 0;
  56
  57 static bfd_size_type common_size;
  58 static bfd_size_type total_bsssize;
  59 static bfd_size_type total_datasize;
  60 static bfd_size_type total_textsize;
  61
  62 /* Program exit status.  */
  63 static int return_code = 0;
  64
  65 static char *target = NULL;
  66
  67 /* Forward declarations.  */
  68
  69 static void display_file (char *);
  70 static void rprint_number (int, bfd_size_type);
  71 static void print_sizes (bfd * file);
  72 \f
  73 static void
  74 usage (FILE *stream, int status)
  75 {
  76   fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
  77   fprintf (stream, _(" Displays the sizes of sections inside binary files\n"));
  78   fprintf (stream, _(" If no input file(s) are specified, a.out is assumed\n"));
  79   fprintf (stream, _(" The options are:\n\
  80   -A|-B     --format={sysv|berkeley}  Select output style (default is %s)\n\
  81   -o|-d|-x  --radix={8|10|16}         Display numbers in octal, decimal or hex\n\
  82   -t        --totals                  Display the total sizes (Berkeley only)\n\
  83             --common                  Display total size for *COM* syms\n\
  84             --target=<bfdname>        Set the binary file format\n\
  85             @<file>                   Read options from <file>\n\
  86   -h        --help                    Display this information\n\
  87   -v        --version                 Display the program's version\n\
  88 \n"),
  89 #if BSD_DEFAULT
  90   "berkeley"
  91 #else
  92   "sysv"
  93 #endif
  94 );
  95   list_supported_targets (program_name, stream);
  96   if (REPORT_BUGS_TO[0] && status == 0)
  97     fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
  98   exit (status);
  99 }
 100
 101 #define OPTION_FORMAT (200)
 102 #define OPTION_RADIX (OPTION_FORMAT + 1)
 103 #define OPTION_TARGET (OPTION_RADIX + 1)
 104
 105 static struct option long_options[] =
 106 {
 107   {"common", no_argument, &show_common, 1},
 108   {"format", required_argument, 0, OPTION_FORMAT},
 109   {"radix", required_argument, 0, OPTION_RADIX},
 110   {"target", required_argument, 0, OPTION_TARGET},
 111   {"totals", no_argument, &show_totals, 1},
 112   {"version", no_argument, &show_version, 1},
 113   {"help", no_argument, &show_help, 1},
 114   {0, no_argument, 0, 0}
 115 };
 116
 117 int main (int, char **);
 118
 119 int
 120 main (int argc, char **argv)
 121 {
 122   int temp;
 123   int c;
 124
 125 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
 126   setlocale (LC_MESSAGES, "");
 127 #endif
 128 #if defined (HAVE_SETLOCALE)
 129   setlocale (LC_CTYPE, "");
 130 #endif
 131   bindtextdomain (PACKAGE, LOCALEDIR);
 132   textdomain (PACKAGE);
 133
 134   program_name = *argv;
 135   xmalloc_set_program_name (program_name);
 136   bfd_set_error_program_name (program_name);
 137
 138   expandargv (&argc, &argv);
 139
 140   bfd_init ();
 141   set_default_bfd_target ();
 142
 143   while ((c = getopt_long (argc, argv, "ABHhVvdfotx", long_options,
 144                            (int *) 0)) != EOF)
 145     switch (c)
 146       {
 147       case OPTION_FORMAT:
 148         switch (*optarg)
 149           {
 150           case 'B':
 151           case 'b':
 152             berkeley_format = 1;
 153             break;
 154           case 'S':
 155           case 's':
 156             berkeley_format = 0;
 157             break;
 158           default:
 159             non_fatal (_("invalid argument to --format: %s"), optarg);
 160             usage (stderr, 1);
 161           }
 162         break;
 163
 164       case OPTION_TARGET:
 165         target = optarg;
 166         break;
 167
 168       case OPTION_RADIX:
 169 #ifdef ANSI_LIBRARIES
 170         temp = strtol (optarg, NULL, 10);
 171 #else
 172         temp = atol (optarg);
 173 #endif
 174         switch (temp)
 175           {
 176           case 10:
 177             radix = decimal;
 178             break;
 179           case 8:
 180             radix = octal;
 181             break;
 182           case 16:
 183             radix = hex;
 184             break;
 185           default:
 186             non_fatal (_("Invalid radix: %s\n"), optarg);
 187             usage (stderr, 1);
 188           }
 189         break;
 190
 191       case 'A':
 192         berkeley_format = 0;
 193         break;
 194       case 'B':
 195         berkeley_format = 1;
 196         break;
 197       case 'v':
 198       case 'V':
 199         show_version = 1;
 200         break;
 201       case 'd':
 202         radix = decimal;
 203         break;
 204       case 'x':
 205         radix = hex;
 206         break;
 207       case 'o':
 208         radix = octal;
 209         break;
 210       case 't':
 211         show_totals = 1;
 212         break;
 213       case 'f': /* FIXME : For sysv68, `-f' means `full format', i.e.
 214                    `[fname:] M(.text) + N(.data) + O(.bss) + P(.comment) = Q'
 215                    where `fname: ' appears only if there are >= 2 input files,
 216                    and M, N, O, P, Q are expressed in decimal by default,
 217                    hexa or octal if requested by `-x' or `-o'.
 218                    Just to make things interesting, Solaris also accepts -f,
 219                    which prints out the size of each allocatable section, the
 220                    name of the section, and the total of the section sizes.  */
 221                 /* For the moment, accept `-f' silently, and ignore it.  */
 222         break;
 223       case 0:
 224         break;
 225       case 'h':
 226       case 'H':
 227       case '?':
 228         usage (stderr, 1);
 229       }
 230
 231   if (show_version)
 232     print_version ("size");
 233   if (show_help)
 234     usage (stdout, 0);
 235
 236   if (optind == argc)
 237     display_file ("a.out");
 238   else
 239     for (; optind < argc;)
 240       display_file (argv[optind++]);
 241
 242   if (show_totals && berkeley_format)
 243     {
 244       bfd_size_type total = total_textsize + total_datasize + total_bsssize;
 245
 246       rprint_number (7, total_textsize);
 247       putchar('\t');
 248       rprint_number (7, total_datasize);
 249       putchar('\t');
 250       rprint_number (7, total_bsssize);
 251       printf (((radix == octal) ? "\t%7lo\t%7lx\t" : "\t%7lu\t%7lx\t"),
 252               (unsigned long) total, (unsigned long) total);
 253       fputs ("(TOTALS)\n", stdout);
 254     }
 255
 256   return return_code;
 257 }
 258 \f
 259 /* Total size required for common symbols in ABFD.  */
 260
 261 static void
 262 calculate_common_size (bfd *abfd)
 263 {
 264   asymbol **syms = NULL;
 265   long storage, symcount;
 266
 267   common_size = 0;
 268   if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC | HAS_SYMS)) != HAS_SYMS)
 269     return;
 270
 271   storage = bfd_get_symtab_upper_bound (abfd);
 272   if (storage < 0)
 273     bfd_fatal (bfd_get_filename (abfd));
 274   if (storage)
 275     syms = (asymbol **) xmalloc (storage);
 276
 277   symcount = bfd_canonicalize_symtab (abfd, syms);
 278   if (symcount < 0)
 279     bfd_fatal (bfd_get_filename (abfd));
 280
 281   while (--symcount >= 0)
 282     {
 283       asymbol *sym = syms[symcount];
 284
 285       if (bfd_is_com_section (sym->section)
 286           && (sym->flags & BSF_SECTION_SYM) == 0)
 287         common_size += sym->value;
 288     }
 289   free (syms);
 290 }
 291
 292 /* Display stats on file or archive member ABFD.  */
 293
 294 static void
 295 display_bfd (bfd *abfd)
 296 {
 297   char **matching;
 298
 299   if (bfd_check_format (abfd, bfd_archive))
 300     /* An archive within an archive.  */
 301     return;
 302
 303   if (bfd_check_format_matches (abfd, bfd_object, &matching))
 304     {
 305       print_sizes (abfd);
 306       printf ("\n");
 307       return;
 308     }
 309
 310   if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
 311     {
 312       bfd_nonfatal (bfd_get_filename (abfd));
 313       list_matching_formats (matching);
 314       free (matching);
 315       return_code = 3;
 316       return;
 317     }
 318
 319   if (bfd_check_format_matches (abfd, bfd_core, &matching))
 320     {
 321       const char *core_cmd;
 322
 323       print_sizes (abfd);
 324       fputs (" (core file", stdout);
 325
 326       core_cmd = bfd_core_file_failing_command (abfd);
 327       if (core_cmd)
 328         printf (" invoked as %s", core_cmd);
 329
 330       puts (")\n");
 331       return;
 332     }
 333
 334   bfd_nonfatal (bfd_get_filename (abfd));
 335
 336   if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
 337     {
 338       list_matching_formats (matching);
 339       free (matching);
 340     }
 341
 342   return_code = 3;
 343 }
 344
 345 static void
 346 display_archive (bfd *file)
 347 {
 348   bfd *arfile = (bfd *) NULL;
 349   bfd *last_arfile = (bfd *) NULL;
 350
 351   for (;;)
 352     {
 353       bfd_set_error (bfd_error_no_error);
 354
 355       arfile = bfd_openr_next_archived_file (file, arfile);
 356       if (arfile == NULL)
 357         {
 358           if (bfd_get_error () != bfd_error_no_more_archived_files)
 359             {
 360               bfd_nonfatal (bfd_get_filename (file));
 361               return_code = 2;
 362             }
 363           break;
 364         }
 365
 366       display_bfd (arfile);
 367
 368       if (last_arfile != NULL)
 369         {
 370           bfd_close (last_arfile);
 371
 372           /* PR 17512: file: a244edbc.  */
 373           if (last_arfile == arfile)
 374             return;
 375         }
 376
 377       last_arfile = arfile;
 378     }
 379
 380   if (last_arfile != NULL)
 381     bfd_close (last_arfile);
 382 }
 383
 384 static void
 385 display_file (char *filename)
 386 {
 387   bfd *file;
 388
 389   if (get_file_size (filename) < 1)
 390     {
 391       return_code = 1;
 392       return;
 393     }
 394
 395   file = bfd_openr (filename, target);
 396   if (file == NULL)
 397     {
 398       bfd_nonfatal (filename);
 399       return_code = 1;
 400       return;
 401     }
 402
 403   if (bfd_check_format (file, bfd_archive))
 404     display_archive (file);
 405   else
 406     display_bfd (file);
 407
 408   if (!bfd_close (file))
 409     {
 410       bfd_nonfatal (filename);
 411       return_code = 1;
 412       return;
 413     }
 414 }
 415 \f
 416 static int
 417 size_number (bfd_size_type num)
 418 {
 419   char buffer[40];
 420
 421   sprintf (buffer,
 422            (radix == decimal ? "%" BFD_VMA_FMT "u" :
 423            ((radix == octal) ? "0%" BFD_VMA_FMT "o" : "0x%" BFD_VMA_FMT "x")),
 424            num);
 425
 426   return strlen (buffer);
 427 }
 428
 429 static void
 430 rprint_number (int width, bfd_size_type num)
 431 {
 432   char buffer[40];
 433
 434   sprintf (buffer,
 435            (radix == decimal ? "%" BFD_VMA_FMT "u" :
 436            ((radix == octal) ? "0%" BFD_VMA_FMT "o" : "0x%" BFD_VMA_FMT "x")),
 437            num);
 438
 439   printf ("%*s", width, buffer);
 440 }
 441
 442 static bfd_size_type bsssize;
 443 static bfd_size_type datasize;
 444 static bfd_size_type textsize;
 445
 446 static void
 447 berkeley_sum (bfd *abfd ATTRIBUTE_UNUSED, sec_ptr sec,
 448               void *ignore ATTRIBUTE_UNUSED)
 449 {
 450   flagword flags;
 451   bfd_size_type size;
 452
 453   flags = bfd_get_section_flags (abfd, sec);
 454   if ((flags & SEC_ALLOC) == 0)
 455     return;
 456
 457   size = bfd_get_section_size (sec);
 458   if ((flags & SEC_CODE) != 0 || (flags & SEC_READONLY) != 0)
 459     textsize += size;
 460   else if ((flags & SEC_HAS_CONTENTS) != 0)
 461     datasize += size;
 462   else
 463     bsssize += size;
 464 }
 465
 466 static void
 467 print_berkeley_format (bfd *abfd)
 468 {
 469   static int files_seen = 0;
 470   bfd_size_type total;
 471
 472   bsssize = 0;
 473   datasize = 0;
 474   textsize = 0;
 475
 476   bfd_map_over_sections (abfd, berkeley_sum, NULL);
 477
 478   bsssize += common_size;
 479   if (files_seen++ == 0)
 480     puts ((radix == octal) ? "   text\t   data\t    bss\t    oct\t    hex\tfilename" :
 481           "   text\t   data\t    bss\t    dec\t    hex\tfilename");
 482
 483   total = textsize + datasize + bsssize;
 484
 485   if (show_totals)
 486     {
 487       total_textsize += textsize;
 488       total_datasize += datasize;
 489       total_bsssize  += bsssize;
 490     }
 491
 492   rprint_number (7, textsize);
 493   putchar ('\t');
 494   rprint_number (7, datasize);
 495   putchar ('\t');
 496   rprint_number (7, bsssize);
 497   printf (((radix == octal) ? "\t%7lo\t%7lx\t" : "\t%7lu\t%7lx\t"),
 498           (unsigned long) total, (unsigned long) total);
 499
 500   fputs (bfd_get_filename (abfd), stdout);
 501
 502   if (abfd->my_archive)
 503     printf (" (ex %s)", bfd_get_filename (abfd->my_archive));
 504 }
 505
 506 /* I REALLY miss lexical functions! */
 507 bfd_size_type svi_total = 0;
 508 bfd_vma svi_maxvma = 0;
 509 int svi_namelen = 0;
 510 int svi_vmalen = 0;
 511 int svi_sizelen = 0;
 512
 513 static void
 514 sysv_internal_sizer (bfd *file ATTRIBUTE_UNUSED, sec_ptr sec,
 515                      void *ignore ATTRIBUTE_UNUSED)
 516 {
 517   bfd_size_type size = bfd_section_size (file, sec);
 518
 519   if (   ! bfd_is_abs_section (sec)
 520       && ! bfd_is_com_section (sec)
 521       && ! bfd_is_und_section (sec))
 522     {
 523       int namelen = strlen (bfd_section_name (file, sec));
 524
 525       if (namelen > svi_namelen)
 526         svi_namelen = namelen;
 527
 528       svi_total += size;
 529
 530       if (bfd_section_vma (file, sec) > svi_maxvma)
 531         svi_maxvma = bfd_section_vma (file, sec);
 532     }
 533 }
 534
 535 static void
 536 sysv_one_line (const char *name, bfd_size_type size, bfd_vma vma)
 537 {
 538   printf ("%-*s   ", svi_namelen, name);
 539   rprint_number (svi_sizelen, size);
 540   printf ("   ");
 541   rprint_number (svi_vmalen, vma);
 542   printf ("\n");
 543 }
 544
 545 static void
 546 sysv_internal_printer (bfd *file ATTRIBUTE_UNUSED, sec_ptr sec,
 547                        void *ignore ATTRIBUTE_UNUSED)
 548 {
 549   bfd_size_type size = bfd_section_size (file, sec);
 550
 551   if (   ! bfd_is_abs_section (sec)
 552       && ! bfd_is_com_section (sec)
 553       && ! bfd_is_und_section (sec))
 554     {
 555       svi_total += size;
 556
 557       sysv_one_line (bfd_section_name (file, sec),
 558                      size,
 559                      bfd_section_vma (file, sec));
 560     }
 561 }
 562
 563 static void
 564 print_sysv_format (bfd *file)
 565 {
 566   /* Size all of the columns.  */
 567   svi_total = 0;
 568   svi_maxvma = 0;
 569   svi_namelen = 0;
 570   bfd_map_over_sections (file, sysv_internal_sizer, NULL);
 571   if (show_common)
 572     {
 573       if (svi_namelen < (int) sizeof ("*COM*") - 1)
 574         svi_namelen = sizeof ("*COM*") - 1;
 575       svi_total += common_size;
 576     }
 577
 578   svi_vmalen = size_number ((bfd_size_type)svi_maxvma);
 579
 580   if ((size_t) svi_vmalen < sizeof ("addr") - 1)
 581     svi_vmalen = sizeof ("addr")-1;
 582
 583   svi_sizelen = size_number (svi_total);
 584   if ((size_t) svi_sizelen < sizeof ("size") - 1)
 585     svi_sizelen = sizeof ("size")-1;
 586
 587   svi_total = 0;
 588   printf ("%s  ", bfd_get_filename (file));
 589
 590   if (file->my_archive)
 591     printf (" (ex %s)", bfd_get_filename (file->my_archive));
 592
 593   printf (":\n%-*s   %*s   %*s\n", svi_namelen, "section",
 594           svi_sizelen, "size", svi_vmalen, "addr");
 595
 596   bfd_map_over_sections (file, sysv_internal_printer, NULL);
 597   if (show_common)
 598     {
 599       svi_total += common_size;
 600       sysv_one_line ("*COM*", common_size, 0);
 601     }
 602
 603   printf ("%-*s   ", svi_namelen, "Total");
 604   rprint_number (svi_sizelen, svi_total);
 605   printf ("\n\n");
 606 }
 607
 608 static void
 609 print_sizes (bfd *file)
 610 {
 611   if (show_common)
 612     calculate_common_size (file);
 613   if (berkeley_format)
 614     print_berkeley_format (file);
 615   else
 616     print_sysv_format (file);
 617 }