| 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 | if (ld_emulation->finish) |
| 92 | ld_emulation->finish (); |
| 93 | } |
| 94 | |
| 95 | void |
| 96 | ldemul_set_symbols (void) |
| 97 | { |
| 98 | if (ld_emulation->set_symbols) |
| 99 | ld_emulation->set_symbols (); |
| 100 | } |
| 101 | |
| 102 | void |
| 103 | ldemul_create_output_section_statements (void) |
| 104 | { |
| 105 | if (ld_emulation->create_output_section_statements) |
| 106 | ld_emulation->create_output_section_statements (); |
| 107 | } |
| 108 | |
| 109 | char * |
| 110 | ldemul_get_script (int *isfile) |
| 111 | { |
| 112 | return ld_emulation->get_script (isfile); |
| 113 | } |
| 114 | |
| 115 | bfd_boolean |
| 116 | ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search, |
| 117 | lang_input_statement_type *entry) |
| 118 | { |
| 119 | if (ld_emulation->open_dynamic_archive) |
| 120 | return (*ld_emulation->open_dynamic_archive) (arch, search, entry); |
| 121 | return FALSE; |
| 122 | } |
| 123 | |
| 124 | bfd_boolean |
| 125 | ldemul_place_orphan (lang_input_statement_type *file, asection *s) |
| 126 | { |
| 127 | if (ld_emulation->place_orphan) |
| 128 | return (*ld_emulation->place_orphan) (file, s); |
| 129 | return FALSE; |
| 130 | } |
| 131 | |
| 132 | void |
| 133 | ldemul_add_options (int ns, char **shortopts, int nl, |
| 134 | struct option **longopts, int nrl, |
| 135 | struct option **really_longopts) |
| 136 | { |
| 137 | if (ld_emulation->add_options) |
| 138 | (*ld_emulation->add_options) (ns, shortopts, nl, longopts, |
| 139 | nrl, really_longopts); |
| 140 | } |
| 141 | |
| 142 | bfd_boolean |
| 143 | ldemul_handle_option (int optc) |
| 144 | { |
| 145 | if (ld_emulation->handle_option) |
| 146 | return (*ld_emulation->handle_option) (optc); |
| 147 | return FALSE; |
| 148 | } |
| 149 | |
| 150 | bfd_boolean |
| 151 | ldemul_parse_args (int argc, char **argv) |
| 152 | { |
| 153 | /* Try and use the emulation parser if there is one. */ |
| 154 | if (ld_emulation->parse_args) |
| 155 | return (*ld_emulation->parse_args) (argc, argv); |
| 156 | return FALSE; |
| 157 | } |
| 158 | |
| 159 | /* Let the emulation code handle an unrecognized file. */ |
| 160 | |
| 161 | bfd_boolean |
| 162 | ldemul_unrecognized_file (lang_input_statement_type *entry) |
| 163 | { |
| 164 | if (ld_emulation->unrecognized_file) |
| 165 | return (*ld_emulation->unrecognized_file) (entry); |
| 166 | return FALSE; |
| 167 | } |
| 168 | |
| 169 | /* Let the emulation code handle a recognized file. */ |
| 170 | |
| 171 | bfd_boolean |
| 172 | ldemul_recognized_file (lang_input_statement_type *entry) |
| 173 | { |
| 174 | if (ld_emulation->recognized_file) |
| 175 | return (*ld_emulation->recognized_file) (entry); |
| 176 | return FALSE; |
| 177 | } |
| 178 | |
| 179 | char * |
| 180 | ldemul_choose_target (int argc, char **argv) |
| 181 | { |
| 182 | return ld_emulation->choose_target (argc, argv); |
| 183 | } |
| 184 | |
| 185 | |
| 186 | /* The default choose_target function. */ |
| 187 | |
| 188 | char * |
| 189 | ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) |
| 190 | { |
| 191 | char *from_outside = getenv (TARGET_ENVIRON); |
| 192 | if (from_outside != (char *) NULL) |
| 193 | return from_outside; |
| 194 | return ld_emulation->target_name; |
| 195 | } |
| 196 | |
| 197 | void |
| 198 | after_parse_default (void) |
| 199 | { |
| 200 | } |
| 201 | |
| 202 | void |
| 203 | after_open_default (void) |
| 204 | { |
| 205 | } |
| 206 | |
| 207 | void |
| 208 | after_allocation_default (void) |
| 209 | { |
| 210 | } |
| 211 | |
| 212 | void |
| 213 | before_allocation_default (void) |
| 214 | { |
| 215 | if (!link_info.relocatable) |
| 216 | strip_excluded_output_sections (); |
| 217 | } |
| 218 | |
| 219 | void |
| 220 | set_output_arch_default (void) |
| 221 | { |
| 222 | /* Set the output architecture and machine if possible. */ |
| 223 | bfd_set_arch_mach (output_bfd, |
| 224 | ldfile_output_architecture, ldfile_output_machine); |
| 225 | } |
| 226 | |
| 227 | void |
| 228 | syslib_default (char *ignore ATTRIBUTE_UNUSED) |
| 229 | { |
| 230 | info_msg (_("%S SYSLIB ignored\n")); |
| 231 | } |
| 232 | |
| 233 | void |
| 234 | hll_default (char *ignore ATTRIBUTE_UNUSED) |
| 235 | { |
| 236 | info_msg (_("%S HLL ignored\n")); |
| 237 | } |
| 238 | |
| 239 | ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; |
| 240 | |
| 241 | void |
| 242 | ldemul_choose_mode (char *target) |
| 243 | { |
| 244 | ld_emulation_xfer_type **eptr = ld_emulations; |
| 245 | /* Ignore "gld" prefix. */ |
| 246 | if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') |
| 247 | target += 3; |
| 248 | for (; *eptr; eptr++) |
| 249 | { |
| 250 | if (strcmp (target, (*eptr)->emulation_name) == 0) |
| 251 | { |
| 252 | ld_emulation = *eptr; |
| 253 | return; |
| 254 | } |
| 255 | } |
| 256 | einfo (_("%P: unrecognised emulation mode: %s\n"), target); |
| 257 | einfo (_("Supported emulations: ")); |
| 258 | ldemul_list_emulations (stderr); |
| 259 | einfo ("%F\n"); |
| 260 | } |
| 261 | |
| 262 | void |
| 263 | ldemul_list_emulations (FILE *f) |
| 264 | { |
| 265 | ld_emulation_xfer_type **eptr = ld_emulations; |
| 266 | bfd_boolean first = TRUE; |
| 267 | |
| 268 | for (; *eptr; eptr++) |
| 269 | { |
| 270 | if (first) |
| 271 | first = FALSE; |
| 272 | else |
| 273 | fprintf (f, " "); |
| 274 | fprintf (f, "%s", (*eptr)->emulation_name); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | void |
| 279 | ldemul_list_emulation_options (FILE *f) |
| 280 | { |
| 281 | ld_emulation_xfer_type **eptr; |
| 282 | int options_found = 0; |
| 283 | |
| 284 | for (eptr = ld_emulations; *eptr; eptr++) |
| 285 | { |
| 286 | ld_emulation_xfer_type *emul = *eptr; |
| 287 | |
| 288 | if (emul->list_options) |
| 289 | { |
| 290 | fprintf (f, "%s: \n", emul->emulation_name); |
| 291 | |
| 292 | emul->list_options (f); |
| 293 | |
| 294 | options_found = 1; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | if (! options_found) |
| 299 | fprintf (f, _(" no emulation specific options.\n")); |
| 300 | } |
| 301 | |
| 302 | int |
| 303 | ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) |
| 304 | { |
| 305 | if (ld_emulation->find_potential_libraries) |
| 306 | return ld_emulation->find_potential_libraries (name, entry); |
| 307 | |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | struct bfd_elf_version_expr * |
| 312 | ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) |
| 313 | { |
| 314 | if (ld_emulation->new_vers_pattern) |
| 315 | entry = (*ld_emulation->new_vers_pattern) (entry); |
| 316 | return entry; |
| 317 | } |