ld/lexsup.c

   1 /* Parse options for the GNU linker.
   2    Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc.
   3
   4 This file is part of GLD, the Gnu Linker.
   5
   6 GLD 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 2, or (at your option)
   9 any later version.
  10
  11 GLD 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 GLD; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include "bfd.h"
  21 #include "sysdep.h"
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include "getopt.h"
  25 #include "bfdlink.h"
  26 #include "config.h"
  27 #include "ld.h"
  28 #include "ldmain.h"
  29 #include "ldmisc.h"
  30 #include "ldexp.h"
  31 #include "ldlang.h"
  32 #include "ldgram.h"
  33 #include "ldlex.h"
  34 #include "ldfile.h"
  35
  36 /* Omit args to avoid the possibility of clashing with a system header
  37    that might disagree about consts.  */
  38 unsigned long strtoul ();
  39
  40 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
  41 static void set_section_start PARAMS ((char *sect, char *valstr));
  42
  43 void
  44 parse_args (argc, argv)
  45      int argc;
  46      char **argv;
  47 {
  48   /* Starting the short option string with '-' is for programs that
  49      expect options and other ARGV-elements in any order and that care about
  50      the ordering of the two.  We describe each non-option ARGV-element
  51      as if it were the argument of an option with character code 1.  */
  52
  53   const char *shortopts = "-A:B::b:cde:F::G:giL:l:Mm:NnO:o:R:rSsT:tu:VvXxy:";
  54
  55   static struct option longopts[] =
  56   {
  57     {"call_shared", no_argument, NULL, 158},
  58     {"dc", no_argument, NULL, 'd'},
  59     {"defsym", required_argument, NULL, 160},
  60     {"dn", no_argument, NULL, 158},
  61     {"dp", no_argument, NULL, 'd'},
  62     {"EB", no_argument, NULL, 150},
  63     {"EL", no_argument, NULL, 151},
  64     {"format", required_argument, NULL, 'b'},
  65     {"help", no_argument, NULL, 164},
  66     {"Map", required_argument, NULL, 152},
  67     {"no-keep-memory", no_argument, NULL, 168},
  68     {"noinhibit-exec", no_argument, NULL, 169},
  69     {"noinhibit_exec", no_argument, NULL, 169},
  70     {"non_shared", no_argument, NULL, 158},
  71     {"oformat", required_argument, NULL, 172},
  72     {"Qy", no_argument, NULL, 158},
  73     {"relax", no_argument, NULL, 173},
  74     {"retain-symbols-file", no_argument, NULL, 174},
  75     {"sort-common", no_argument, NULL, 175},
  76     {"sort_common", no_argument, NULL, 175},
  77     {"stats", no_argument, NULL, 176},
  78     {"Tbss", required_argument, NULL, 154},
  79     {"Tdata", required_argument, NULL, 155},
  80     {"Ttext", required_argument, NULL, 156},
  81     {"Ur", no_argument, NULL, 157},
  82     {"version", no_argument, NULL, 178},
  83     {"warn-common", no_argument, NULL, 177},
  84     {"YP,", required_argument, NULL, 158},
  85     {NULL, no_argument, NULL, 0}
  86   };
  87
  88   while (1)
  89     {
  90       /* getopt_long_only is like getopt_long, but '-' as well as '--' can
  91          indicate a long option.  */
  92       int optc = getopt_long_only (argc, argv, shortopts, longopts,
  93                                    (int *) NULL);
  94       if (optc == -1)
  95         break;
  96
  97       switch (optc)
  98         {
  99         default:
 100           xexit (1);
 101         case 1:                 /* File name.  */
 102           lang_add_input_file (optarg, lang_input_file_is_file_enum,
 103                                (char *) NULL);
 104           break;
 105
 106         case 'A':
 107           ldfile_add_arch (optarg);
 108           break;
 109         case 'B':
 110           /* Ignore.  */
 111           break;
 112         case 'b':
 113           lang_add_target (optarg);
 114           break;
 115         case 'c':
 116           ldfile_open_command_file (optarg);
 117           parser_input = input_mri_script;
 118           yyparse ();
 119           break;
 120         case 158:               /* call_shared, dn, non_shared, Qy, YP */
 121           set_default_dirlist (optarg);
 122           break;
 123         case 'd':
 124           command_line.force_common_definition = true;
 125           break;
 126         case 160:               /* defsym */
 127           lex_redirect (optarg);
 128           parser_input = input_defsym;
 129           yyparse ();
 130           break;
 131         case 150:               /* EB */
 132           /* FIXME: This is currently ignored.  It means
 133              ``produce a big-endian object file''.  It could
 134              be used to select an output format.  */
 135           break;
 136         case 151:               /* EL */
 137           /* FIXME: This is currently ignored.  It means
 138              ``produce a little-endian object file''.  It could
 139              be used to select an output format.  */
 140           break;
 141         case 'e':
 142           lang_add_entry (optarg);
 143           break;
 144         case 'F':
 145           /* Ignore.  */
 146           break;
 147         case 'G':
 148           {
 149             char *end;
 150             g_switch_value = strtoul (optarg, &end, 0);
 151             if (*end)
 152               einfo ("%P%F: invalid number `%s'", optarg);
 153           }
 154           break;
 155         case 'g':
 156           /* Ignore.  */
 157           break;
 158         case 164:               /* help */
 159           help ();
 160           xexit (0);
 161           break;
 162         case 'L':
 163           ldfile_add_library_path (optarg);
 164           break;
 165         case 'l':
 166           lang_add_input_file (optarg, lang_input_file_is_l_enum,
 167                                (char *) NULL);
 168           break;
 169         case 'M':
 170           config.map_filename = "-";
 171           break;
 172         case 'm':
 173           /* Ignore.  Was handled in a pre-parse.   */
 174           break;
 175         case 152:               /* Map */
 176           write_map = true;
 177           config.map_filename = optarg;
 178           break;
 179         case 'N':
 180           config.text_read_only = false;
 181           config.magic_demand_paged = false;
 182           break;
 183         case 'n':
 184           config.magic_demand_paged = false;
 185           break;
 186         case 168:               /* no-keep-memory */
 187           link_info.keep_memory = false;
 188           break;
 189         case 169:               /* noinhibit-exec */
 190           force_make_executable = true;
 191           break;
 192         case 'O':
 193           /* FIXME "-O<non-digits> <value>" used to set the address of
 194              section <non-digits>.  Was this for compatibility with
 195              something, or can we create a new option to do that
 196              (with a syntax similar to -defsym)?
 197              getopt can't handle two args to an option without kludges.  */
 198           set_default_dirlist (optarg);
 199           break;
 200         case 'o':
 201           lang_add_output (optarg, 0);
 202           break;
 203         case 172:               /* oformat */
 204           lang_add_output_format (optarg, 0);
 205           break;
 206         case 'r':
 207           link_info.relocateable = true;
 208           config.build_constructors = false;
 209           config.magic_demand_paged = false;
 210           config.text_read_only = false;
 211           break;
 212         case 'R':
 213           lang_add_input_file (optarg,
 214                                lang_input_file_is_symbols_only_enum,
 215                                (char *) NULL);
 216           break;
 217         case 173:               /* relax */
 218           command_line.relax = true;
 219           break;
 220         case 174:               /* retain-symbols-file */
 221           add_keepsyms_file (optarg);
 222           break;
 223         case 'S':
 224           link_info.strip = strip_debugger;
 225           break;
 226         case 's':
 227           link_info.strip = strip_all;
 228           break;
 229         case 175:               /* sort-common */
 230           config.sort_common = true;
 231           break;
 232         case 176:               /* stats */
 233           config.stats = true;
 234           break;
 235         case 't':
 236           trace_files = true;
 237           break;
 238         case 'T':
 239           ldfile_open_command_file (optarg);
 240           parser_input = input_script;
 241           yyparse ();
 242           break;
 243         case 154:               /* Tbss */
 244           set_section_start (".bss", optarg);
 245           break;
 246         case 155:               /* Tdata */
 247           set_section_start (".data", optarg);
 248           break;
 249         case 156:               /* Ttext */
 250           set_section_start (".text", optarg);
 251           break;
 252         case 157:               /* Ur */
 253           link_info.relocateable = true;
 254           config.build_constructors = true;
 255           config.magic_demand_paged = false;
 256           config.text_read_only = false;
 257           break;
 258         case 'u':
 259           ldlang_add_undef (optarg);
 260           break;
 261         case 'V':
 262           ldversion (1);
 263           version_printed = true;
 264           trace_file_tries = true;
 265           break;
 266         case 'v':
 267           ldversion (0);
 268           version_printed = true;
 269           break;
 270         case 178:               /* version */
 271           ldversion (0);
 272           version_printed = true;
 273           break;
 274         case 177:               /* warn-common */
 275           config.warn_common = true;
 276           break;
 277         case 'X':
 278           link_info.discard = discard_l;
 279           break;
 280         case 'x':
 281           link_info.discard = discard_all;
 282           break;
 283         case 'y':
 284           add_ysym (optarg);
 285           break;
 286         }
 287     }
 288 }
 289
 290 /* Add the (colon-separated) elements of DIRLIST_PTR to the
 291    library search path.  */
 292
 293 static void
 294 set_default_dirlist (dirlist_ptr)
 295      char *dirlist_ptr;
 296 {
 297   char *p;
 298
 299   while (1)
 300     {
 301       p = strchr (dirlist_ptr, ':');
 302       if (p != NULL)
 303         *p = 0;
 304       if (*dirlist_ptr)
 305         ldfile_add_library_path (dirlist_ptr);
 306       if (p == NULL)
 307         break;
 308       *p = ':';
 309       dirlist_ptr = p + 1;
 310     }
 311 }
 312
 313 static void
 314 set_section_start (sect, valstr)
 315      char *sect, *valstr;
 316 {
 317   char *end;
 318   unsigned long val = strtoul (valstr, &end, 16);
 319   if (*end)
 320     einfo ("%P%F: invalid hex number `%s'", valstr);
 321   lang_section_start (sect, exp_intop (val));
 322 }