1 /* ldemul.c -- clearing house for ld emulation states 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2005 4 Free Software Foundation, Inc. 5 6 This file is part of GLD, the Gnu Linker. 7 8 GLD is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GLD is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GLD; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #include "config.h" 24 #include "bfd.h" 25 #include "sysdep.h" 26 #include "getopt.h" 27 #include "bfdlink.h" 28 29 #include "ld.h" 30 #include "ldmisc.h" 31 #include "ldexp.h" 32 #include "ldlang.h" 33 #include "ldfile.h" 34 #include "ldemul.h" 35 #include "ldmain.h" 36 #include "ldemul-list.h" 37 38 static ld_emulation_xfer_type *ld_emulation; 39 40 void 41 ldemul_hll (char *name) 42 { 43 ld_emulation->hll (name); 44 } 45 46 void 47 ldemul_syslib (char *name) 48 { 49 ld_emulation->syslib (name); 50 } 51 52 void 53 ldemul_after_parse (void) 54 { 55 ld_emulation->after_parse (); 56 } 57 58 void 59 ldemul_before_parse (void) 60 { 61 ld_emulation->before_parse (); 62 } 63 64 void 65 ldemul_after_open (void) 66 { 67 ld_emulation->after_open (); 68 } 69 70 void 71 ldemul_after_allocation (void) 72 { 73 ld_emulation->after_allocation (); 74 } 75 76 void 77 ldemul_before_allocation (void) 78 { 79 ld_emulation->before_allocation (); 80 } 81 82 void 83 ldemul_set_output_arch (void) 84 { 85 ld_emulation->set_output_arch (); 86 } 87 88 void 89 ldemul_finish (void) 90 { 91 ld_emulation->finish (); 92 } 93 94 void 95 ldemul_set_symbols (void) 96 { 97 if (ld_emulation->set_symbols) 98 ld_emulation->set_symbols (); 99 } 100 101 void 102 ldemul_create_output_section_statements (void) 103 { 104 if (ld_emulation->create_output_section_statements) 105 ld_emulation->create_output_section_statements (); 106 } 107 108 char * 109 ldemul_get_script (int *isfile) 110 { 111 return ld_emulation->get_script (isfile); 112 } 113 114 bfd_boolean 115 ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search, 116 lang_input_statement_type *entry) 117 { 118 if (ld_emulation->open_dynamic_archive) 119 return (*ld_emulation->open_dynamic_archive) (arch, search, entry); 120 return FALSE; 121 } 122 123 bfd_boolean 124 ldemul_place_orphan (asection *s) 125 { 126 if (ld_emulation->place_orphan) 127 return (*ld_emulation->place_orphan) (s); 128 return FALSE; 129 } 130 131 void 132 ldemul_add_options (int ns, char **shortopts, int nl, 133 struct option **longopts, int nrl, 134 struct option **really_longopts) 135 { 136 if (ld_emulation->add_options) 137 (*ld_emulation->add_options) (ns, shortopts, nl, longopts, 138 nrl, really_longopts); 139 } 140 141 bfd_boolean 142 ldemul_handle_option (int optc) 143 { 144 if (ld_emulation->handle_option) 145 return (*ld_emulation->handle_option) (optc); 146 return FALSE; 147 } 148 149 bfd_boolean 150 ldemul_parse_args (int argc, char **argv) 151 { 152 /* Try and use the emulation parser if there is one. */ 153 if (ld_emulation->parse_args) 154 return (*ld_emulation->parse_args) (argc, argv); 155 return FALSE; 156 } 157 158 /* Let the emulation code handle an unrecognized file. */ 159 160 bfd_boolean 161 ldemul_unrecognized_file (lang_input_statement_type *entry) 162 { 163 if (ld_emulation->unrecognized_file) 164 return (*ld_emulation->unrecognized_file) (entry); 165 return FALSE; 166 } 167 168 /* Let the emulation code handle a recognized file. */ 169 170 bfd_boolean 171 ldemul_recognized_file (lang_input_statement_type *entry) 172 { 173 if (ld_emulation->recognized_file) 174 return (*ld_emulation->recognized_file) (entry); 175 return FALSE; 176 } 177 178 char * 179 ldemul_choose_target (int argc, char **argv) 180 { 181 return ld_emulation->choose_target (argc, argv); 182 } 183 184 185 /* The default choose_target function. */ 186 187 char * 188 ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) 189 { 190 char *from_outside = getenv (TARGET_ENVIRON); 191 if (from_outside != (char *) NULL) 192 return from_outside; 193 return ld_emulation->target_name; 194 } 195 196 void 197 after_parse_default (void) 198 { 199 } 200 201 void 202 after_open_default (void) 203 { 204 } 205 206 void 207 after_allocation_default (void) 208 { 209 } 210 211 void 212 before_allocation_default (void) 213 { 214 if (!link_info.relocatable) 215 strip_excluded_output_sections (); 216 } 217 218 void 219 finish_default (void) 220 { 221 if (!link_info.relocatable) 222 _bfd_fix_excluded_sec_syms (output_bfd, &link_info); 223 } 224 225 void 226 set_output_arch_default (void) 227 { 228 /* Set the output architecture and machine if possible. */ 229 bfd_set_arch_mach (output_bfd, 230 ldfile_output_architecture, ldfile_output_machine); 231 } 232 233 void 234 syslib_default (char *ignore ATTRIBUTE_UNUSED) 235 { 236 info_msg (_("%S SYSLIB ignored\n")); 237 } 238 239 void 240 hll_default (char *ignore ATTRIBUTE_UNUSED) 241 { 242 info_msg (_("%S HLL ignored\n")); 243 } 244 245 ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; 246 247 void 248 ldemul_choose_mode (char *target) 249 { 250 ld_emulation_xfer_type **eptr = ld_emulations; 251 /* Ignore "gld" prefix. */ 252 if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') 253 target += 3; 254 for (; *eptr; eptr++) 255 { 256 if (strcmp (target, (*eptr)->emulation_name) == 0) 257 { 258 ld_emulation = *eptr; 259 return; 260 } 261 } 262 einfo (_("%P: unrecognised emulation mode: %s\n"), target); 263 einfo (_("Supported emulations: ")); 264 ldemul_list_emulations (stderr); 265 einfo ("%F\n"); 266 } 267 268 void 269 ldemul_list_emulations (FILE *f) 270 { 271 ld_emulation_xfer_type **eptr = ld_emulations; 272 bfd_boolean first = TRUE; 273 274 for (; *eptr; eptr++) 275 { 276 if (first) 277 first = FALSE; 278 else 279 fprintf (f, " "); 280 fprintf (f, "%s", (*eptr)->emulation_name); 281 } 282 } 283 284 void 285 ldemul_list_emulation_options (FILE *f) 286 { 287 ld_emulation_xfer_type **eptr; 288 int options_found = 0; 289 290 for (eptr = ld_emulations; *eptr; eptr++) 291 { 292 ld_emulation_xfer_type *emul = *eptr; 293 294 if (emul->list_options) 295 { 296 fprintf (f, "%s: \n", emul->emulation_name); 297 298 emul->list_options (f); 299 300 options_found = 1; 301 } 302 } 303 304 if (! options_found) 305 fprintf (f, _(" no emulation specific options.\n")); 306 } 307 308 int 309 ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) 310 { 311 if (ld_emulation->find_potential_libraries) 312 return ld_emulation->find_potential_libraries (name, entry); 313 314 return 0; 315 } 316 317 struct bfd_elf_version_expr * 318 ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) 319 { 320 if (ld_emulation->new_vers_pattern) 321 entry = (*ld_emulation->new_vers_pattern) (entry); 322 return entry; 323 } 324