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, 2007, 2008 4 Free Software Foundation, Inc. 5 6 This file is part of the GNU Binutils. 7 8 This program 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 3 of the License, or 11 (at your option) any later version. 12 13 This program 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 this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "getopt.h" 26 #include "bfdlink.h" 27 28 #include "ld.h" 29 #include "ldmisc.h" 30 #include "ldexp.h" 31 #include "ldlang.h" 32 #include "ldfile.h" 33 #include "ldemul.h" 34 #include "ldmain.h" 35 #include "ldemul-list.h" 36 37 static ld_emulation_xfer_type *ld_emulation; 38 39 void 40 ldemul_hll (char *name) 41 { 42 ld_emulation->hll (name); 43 } 44 45 void 46 ldemul_syslib (char *name) 47 { 48 ld_emulation->syslib (name); 49 } 50 51 void 52 ldemul_after_parse (void) 53 { 54 ld_emulation->after_parse (); 55 } 56 57 void 58 ldemul_before_parse (void) 59 { 60 ld_emulation->before_parse (); 61 } 62 63 void 64 ldemul_after_open (void) 65 { 66 ld_emulation->after_open (); 67 } 68 69 void 70 ldemul_after_allocation (void) 71 { 72 ld_emulation->after_allocation (); 73 } 74 75 void 76 ldemul_before_allocation (void) 77 { 78 ld_emulation->before_allocation (); 79 } 80 81 void 82 ldemul_set_output_arch (void) 83 { 84 ld_emulation->set_output_arch (); 85 } 86 87 void 88 ldemul_finish (void) 89 { 90 ld_emulation->finish (); 91 } 92 93 void 94 ldemul_set_symbols (void) 95 { 96 if (ld_emulation->set_symbols) 97 ld_emulation->set_symbols (); 98 } 99 100 void 101 ldemul_create_output_section_statements (void) 102 { 103 if (ld_emulation->create_output_section_statements) 104 ld_emulation->create_output_section_statements (); 105 } 106 107 char * 108 ldemul_get_script (int *isfile) 109 { 110 return ld_emulation->get_script (isfile); 111 } 112 113 bfd_boolean 114 ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search, 115 lang_input_statement_type *entry) 116 { 117 if (ld_emulation->open_dynamic_archive) 118 return (*ld_emulation->open_dynamic_archive) (arch, search, entry); 119 return FALSE; 120 } 121 122 bfd_boolean 123 ldemul_place_orphan (asection *s, const char *name, int constraint) 124 { 125 if (ld_emulation->place_orphan) 126 return (*ld_emulation->place_orphan) (s, name, constraint); 127 return FALSE; 128 } 129 130 void 131 ldemul_add_options (int ns, char **shortopts, int nl, 132 struct option **longopts, int nrl, 133 struct option **really_longopts) 134 { 135 if (ld_emulation->add_options) 136 (*ld_emulation->add_options) (ns, shortopts, nl, longopts, 137 nrl, really_longopts); 138 } 139 140 bfd_boolean 141 ldemul_handle_option (int optc) 142 { 143 if (ld_emulation->handle_option) 144 return (*ld_emulation->handle_option) (optc); 145 return FALSE; 146 } 147 148 bfd_boolean 149 ldemul_parse_args (int argc, char **argv) 150 { 151 /* Try and use the emulation parser if there is one. */ 152 if (ld_emulation->parse_args) 153 return (*ld_emulation->parse_args) (argc, argv); 154 return FALSE; 155 } 156 157 /* Let the emulation code handle an unrecognized file. */ 158 159 bfd_boolean 160 ldemul_unrecognized_file (lang_input_statement_type *entry) 161 { 162 if (ld_emulation->unrecognized_file) 163 return (*ld_emulation->unrecognized_file) (entry); 164 return FALSE; 165 } 166 167 /* Let the emulation code handle a recognized file. */ 168 169 bfd_boolean 170 ldemul_recognized_file (lang_input_statement_type *entry) 171 { 172 if (ld_emulation->recognized_file) 173 return (*ld_emulation->recognized_file) (entry); 174 return FALSE; 175 } 176 177 char * 178 ldemul_choose_target (int argc, char **argv) 179 { 180 return ld_emulation->choose_target (argc, argv); 181 } 182 183 184 /* The default choose_target function. */ 185 186 char * 187 ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) 188 { 189 char *from_outside = getenv (TARGET_ENVIRON); 190 if (from_outside != (char *) NULL) 191 return from_outside; 192 return ld_emulation->target_name; 193 } 194 195 void 196 after_parse_default (void) 197 { 198 } 199 200 void 201 after_open_default (void) 202 { 203 } 204 205 void 206 after_allocation_default (void) 207 { 208 } 209 210 void 211 before_allocation_default (void) 212 { 213 if (!link_info.relocatable) 214 strip_excluded_output_sections (); 215 } 216 217 void 218 finish_default (void) 219 { 220 if (!link_info.relocatable) 221 _bfd_fix_excluded_sec_syms (link_info.output_bfd, &link_info); 222 } 223 224 void 225 set_output_arch_default (void) 226 { 227 /* Set the output architecture and machine if possible. */ 228 bfd_set_arch_mach (link_info.output_bfd, 229 ldfile_output_architecture, ldfile_output_machine); 230 } 231 232 void 233 syslib_default (char *ignore ATTRIBUTE_UNUSED) 234 { 235 info_msg (_("%S SYSLIB ignored\n")); 236 } 237 238 void 239 hll_default (char *ignore ATTRIBUTE_UNUSED) 240 { 241 info_msg (_("%S HLL ignored\n")); 242 } 243 244 ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; 245 246 void 247 ldemul_choose_mode (char *target) 248 { 249 ld_emulation_xfer_type **eptr = ld_emulations; 250 /* Ignore "gld" prefix. */ 251 if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') 252 target += 3; 253 for (; *eptr; eptr++) 254 { 255 if (strcmp (target, (*eptr)->emulation_name) == 0) 256 { 257 ld_emulation = *eptr; 258 return; 259 } 260 } 261 einfo (_("%P: unrecognised emulation mode: %s\n"), target); 262 einfo (_("Supported emulations: ")); 263 ldemul_list_emulations (stderr); 264 einfo ("%F\n"); 265 } 266 267 void 268 ldemul_list_emulations (FILE *f) 269 { 270 ld_emulation_xfer_type **eptr = ld_emulations; 271 bfd_boolean first = TRUE; 272 273 for (; *eptr; eptr++) 274 { 275 if (first) 276 first = FALSE; 277 else 278 fprintf (f, " "); 279 fprintf (f, "%s", (*eptr)->emulation_name); 280 } 281 } 282 283 void 284 ldemul_list_emulation_options (FILE *f) 285 { 286 ld_emulation_xfer_type **eptr; 287 int options_found = 0; 288 289 for (eptr = ld_emulations; *eptr; eptr++) 290 { 291 ld_emulation_xfer_type *emul = *eptr; 292 293 if (emul->list_options) 294 { 295 fprintf (f, "%s: \n", emul->emulation_name); 296 297 emul->list_options (f); 298 299 options_found = 1; 300 } 301 } 302 303 if (! options_found) 304 fprintf (f, _(" no emulation specific options.\n")); 305 } 306 307 int 308 ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) 309 { 310 if (ld_emulation->find_potential_libraries) 311 return ld_emulation->find_potential_libraries (name, entry); 312 313 return 0; 314 } 315 316 struct bfd_elf_version_expr * 317 ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) 318 { 319 if (ld_emulation->new_vers_pattern) 320 entry = (*ld_emulation->new_vers_pattern) (entry); 321 return entry; 322 } 323