1 /* ldemul.c -- clearing house for ld emulation states 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2002, 2003 3 Free Software Foundation, Inc. 4 5 This file is part of GLD, the Gnu Linker. 6 7 GLD 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 2, or (at your option) 10 any later version. 11 12 GLD 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 GLD; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 #include "bfd.h" 23 #include "sysdep.h" 24 #include "getopt.h" 25 26 #include "ld.h" 27 #include "ldmisc.h" 28 #include "ldexp.h" 29 #include "ldlang.h" 30 #include "ldfile.h" 31 #include "ldemul.h" 32 #include "ldmain.h" 33 #include "ldemul-list.h" 34 35 ld_emulation_xfer_type *ld_emulation; 36 37 void 38 ldemul_hll (char *name) 39 { 40 ld_emulation->hll (name); 41 } 42 43 void 44 ldemul_syslib (char *name) 45 { 46 ld_emulation->syslib (name); 47 } 48 49 void 50 ldemul_after_parse (void) 51 { 52 ld_emulation->after_parse (); 53 } 54 55 void 56 ldemul_before_parse (void) 57 { 58 ld_emulation->before_parse (); 59 } 60 61 void 62 ldemul_after_open (void) 63 { 64 ld_emulation->after_open (); 65 } 66 67 void 68 ldemul_after_allocation (void) 69 { 70 ld_emulation->after_allocation (); 71 } 72 73 void 74 ldemul_before_allocation (void) 75 { 76 if (ld_emulation->before_allocation) 77 ld_emulation->before_allocation (); 78 } 79 80 void 81 ldemul_set_output_arch (void) 82 { 83 ld_emulation->set_output_arch (); 84 } 85 86 void 87 ldemul_finish (void) 88 { 89 if (ld_emulation->finish) 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 (lang_input_statement_type *file, asection *s) 124 { 125 if (ld_emulation->place_orphan) 126 return (*ld_emulation->place_orphan) (file, s); 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 } 214 215 void 216 set_output_arch_default (void) 217 { 218 /* Set the output architecture and machine if possible. */ 219 bfd_set_arch_mach (output_bfd, 220 ldfile_output_architecture, ldfile_output_machine); 221 } 222 223 void 224 syslib_default (char *ignore ATTRIBUTE_UNUSED) 225 { 226 info_msg (_("%S SYSLIB ignored\n")); 227 } 228 229 void 230 hll_default (char *ignore ATTRIBUTE_UNUSED) 231 { 232 info_msg (_("%S HLL ignored\n")); 233 } 234 235 ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; 236 237 void 238 ldemul_choose_mode (char *target) 239 { 240 ld_emulation_xfer_type **eptr = ld_emulations; 241 /* Ignore "gld" prefix. */ 242 if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') 243 target += 3; 244 for (; *eptr; eptr++) 245 { 246 if (strcmp (target, (*eptr)->emulation_name) == 0) 247 { 248 ld_emulation = *eptr; 249 return; 250 } 251 } 252 einfo (_("%P: unrecognised emulation mode: %s\n"), target); 253 einfo (_("Supported emulations: ")); 254 ldemul_list_emulations (stderr); 255 einfo ("%F\n"); 256 } 257 258 void 259 ldemul_list_emulations (FILE *f) 260 { 261 ld_emulation_xfer_type **eptr = ld_emulations; 262 bfd_boolean first = TRUE; 263 264 for (; *eptr; eptr++) 265 { 266 if (first) 267 first = FALSE; 268 else 269 fprintf (f, " "); 270 fprintf (f, "%s", (*eptr)->emulation_name); 271 } 272 } 273 274 void 275 ldemul_list_emulation_options (FILE *f) 276 { 277 ld_emulation_xfer_type **eptr; 278 int options_found = 0; 279 280 for (eptr = ld_emulations; *eptr; eptr++) 281 { 282 ld_emulation_xfer_type *emul = *eptr; 283 284 if (emul->list_options) 285 { 286 fprintf (f, "%s: \n", emul->emulation_name); 287 288 emul->list_options (f); 289 290 options_found = 1; 291 } 292 } 293 294 if (! options_found) 295 fprintf (f, _(" no emulation specific options.\n")); 296 } 297 298 int 299 ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) 300 { 301 if (ld_emulation->find_potential_libraries) 302 return ld_emulation->find_potential_libraries (name, entry); 303 304 return 0; 305 } 306 307 struct bfd_elf_version_expr * 308 ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) 309 { 310 if (ld_emulation->new_vers_pattern) 311 entry = (*ld_emulation->new_vers_pattern) (entry); 312 return entry; 313 } 314