| 1 | /* Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc. |
| 2 | |
| 3 | This file is part of GLD, the Gnu Linker. |
| 4 | |
| 5 | GLD is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 1, or (at your option) |
| 8 | any later version. |
| 9 | |
| 10 | GLD is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with GLD; see the file COPYING. If not, write to |
| 17 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 18 | |
| 19 | /* |
| 20 | ldfile.c |
| 21 | |
| 22 | look after all the file stuff |
| 23 | |
| 24 | */ |
| 25 | |
| 26 | #include "bfd.h" |
| 27 | #include "sysdep.h" |
| 28 | #include "bfdlink.h" |
| 29 | #include "ld.h" |
| 30 | #include "ldmisc.h" |
| 31 | #include "ldexp.h" |
| 32 | #include "ldlang.h" |
| 33 | #include "ldfile.h" |
| 34 | #include "ldmain.h" |
| 35 | #include "ldgram.h" |
| 36 | #include "ldlex.h" |
| 37 | #include "ldemul.h" |
| 38 | |
| 39 | #include <ctype.h> |
| 40 | |
| 41 | const char *ldfile_input_filename; |
| 42 | boolean ldfile_assumed_script = false; |
| 43 | const char *ldfile_output_machine_name = ""; |
| 44 | unsigned long ldfile_output_machine; |
| 45 | enum bfd_architecture ldfile_output_architecture; |
| 46 | search_dirs_type *search_head; |
| 47 | |
| 48 | #ifndef MPW |
| 49 | #ifdef VMS |
| 50 | char *slash = ""; |
| 51 | #else |
| 52 | char *slash = "/"; |
| 53 | #endif |
| 54 | #else /* MPW */ |
| 55 | /* The MPW path char is a colon. */ |
| 56 | char *slash = ":"; |
| 57 | #endif /* MPW */ |
| 58 | |
| 59 | /* LOCAL */ |
| 60 | |
| 61 | static search_dirs_type **search_tail_ptr = &search_head; |
| 62 | |
| 63 | typedef struct search_arch |
| 64 | { |
| 65 | char *name; |
| 66 | struct search_arch *next; |
| 67 | } search_arch_type; |
| 68 | |
| 69 | static search_arch_type *search_arch_head; |
| 70 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; |
| 71 | |
| 72 | static boolean ldfile_open_file_search |
| 73 | PARAMS ((const char *arch, lang_input_statement_type *, |
| 74 | const char *lib, const char *suffix)); |
| 75 | static FILE *try_open PARAMS ((const char *name, const char *exten)); |
| 76 | |
| 77 | void |
| 78 | ldfile_add_library_path (name, cmdline) |
| 79 | const char *name; |
| 80 | boolean cmdline; |
| 81 | { |
| 82 | search_dirs_type *new; |
| 83 | |
| 84 | new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type)); |
| 85 | new->next = NULL; |
| 86 | new->name = name; |
| 87 | new->cmdline = cmdline; |
| 88 | *search_tail_ptr = new; |
| 89 | search_tail_ptr = &new->next; |
| 90 | } |
| 91 | |
| 92 | /* Try to open a BFD for a lang_input_statement. */ |
| 93 | |
| 94 | boolean |
| 95 | ldfile_try_open_bfd (attempt, entry) |
| 96 | const char *attempt; |
| 97 | lang_input_statement_type *entry; |
| 98 | { |
| 99 | entry->the_bfd = bfd_openr (attempt, entry->target); |
| 100 | |
| 101 | if (trace_file_tries) |
| 102 | info_msg ("attempt to open %s %s\n", attempt, |
| 103 | entry->the_bfd == NULL ? "failed" : "succeeded"); |
| 104 | |
| 105 | if (entry->the_bfd != NULL) |
| 106 | return true; |
| 107 | else |
| 108 | return false; |
| 109 | } |
| 110 | |
| 111 | /* Search for and open the file specified by ENTRY. If it is an |
| 112 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ |
| 113 | |
| 114 | static boolean |
| 115 | ldfile_open_file_search (arch, entry, lib, suffix) |
| 116 | const char *arch; |
| 117 | lang_input_statement_type *entry; |
| 118 | const char *lib; |
| 119 | const char *suffix; |
| 120 | { |
| 121 | search_dirs_type *search; |
| 122 | |
| 123 | /* If this is not an archive, try to open it in the current |
| 124 | directory first. */ |
| 125 | if (! entry->is_archive) |
| 126 | { |
| 127 | if (ldfile_try_open_bfd (entry->filename, entry)) |
| 128 | return true; |
| 129 | } |
| 130 | |
| 131 | for (search = search_head; |
| 132 | search != (search_dirs_type *)NULL; |
| 133 | search = search->next) |
| 134 | { |
| 135 | char *string; |
| 136 | |
| 137 | if (entry->dynamic && ! link_info.relocateable) |
| 138 | { |
| 139 | if (ldemul_open_dynamic_archive (arch, search, entry)) |
| 140 | return true; |
| 141 | } |
| 142 | |
| 143 | string = (char *) xmalloc (strlen (search->name) |
| 144 | + strlen (slash) |
| 145 | + strlen (lib) |
| 146 | + strlen (entry->filename) |
| 147 | + strlen (arch) |
| 148 | + strlen (suffix) |
| 149 | + 1); |
| 150 | |
| 151 | if (entry->is_archive) |
| 152 | sprintf (string, "%s%s%s%s%s%s", search->name, slash, |
| 153 | lib, entry->filename, arch, suffix); |
| 154 | else if (entry->filename[0] == '/' || entry->filename[0] == '.') |
| 155 | strcpy (string, entry->filename); |
| 156 | else |
| 157 | sprintf (string, "%s%s%s", search->name, slash, entry->filename); |
| 158 | |
| 159 | if (ldfile_try_open_bfd (string, entry)) |
| 160 | { |
| 161 | entry->filename = string; |
| 162 | return true; |
| 163 | } |
| 164 | |
| 165 | free (string); |
| 166 | } |
| 167 | |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | /* Open the input file specified by ENTRY. */ |
| 172 | |
| 173 | void |
| 174 | ldfile_open_file (entry) |
| 175 | lang_input_statement_type *entry; |
| 176 | { |
| 177 | if (entry->the_bfd != NULL) |
| 178 | return; |
| 179 | |
| 180 | if (! entry->search_dirs_flag) |
| 181 | { |
| 182 | if (ldfile_try_open_bfd (entry->filename, entry)) |
| 183 | return; |
| 184 | } |
| 185 | else |
| 186 | { |
| 187 | search_arch_type *arch; |
| 188 | |
| 189 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ |
| 190 | for (arch = search_arch_head; |
| 191 | arch != (search_arch_type *) NULL; |
| 192 | arch = arch->next) |
| 193 | { |
| 194 | if (ldfile_open_file_search (arch->name, entry, "lib", ".a")) |
| 195 | return; |
| 196 | #ifdef VMS |
| 197 | if (ldfile_open_file_search (arch->name, entry, ":lib", ".a")) |
| 198 | return; |
| 199 | #endif |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | einfo("%F%P: cannot open %s: %E\n", entry->local_sym_name); |
| 204 | } |
| 205 | |
| 206 | /* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */ |
| 207 | |
| 208 | static FILE * |
| 209 | try_open (name, exten) |
| 210 | const char *name; |
| 211 | const char *exten; |
| 212 | { |
| 213 | FILE *result; |
| 214 | char buff[1000]; |
| 215 | |
| 216 | result = fopen (name, "r"); |
| 217 | if (trace_file_tries) |
| 218 | { |
| 219 | if (result == NULL) |
| 220 | info_msg ("cannot find script file "); |
| 221 | else |
| 222 | info_msg ("opened script file "); |
| 223 | info_msg ("%s\n",name); |
| 224 | } |
| 225 | |
| 226 | if (result != NULL) |
| 227 | return result; |
| 228 | |
| 229 | if (*exten) |
| 230 | { |
| 231 | sprintf (buff, "%s%s", name, exten); |
| 232 | result = fopen (buff, "r"); |
| 233 | if (trace_file_tries) |
| 234 | { |
| 235 | if (result == NULL) |
| 236 | info_msg ("cannot find script file "); |
| 237 | else |
| 238 | info_msg ("opened script file "); |
| 239 | info_msg ("%s\n", buff); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | return result; |
| 244 | } |
| 245 | |
| 246 | /* Try to open NAME; if that fails, look for it in any directories |
| 247 | specified with -L, without and with EXTEND apppended. */ |
| 248 | |
| 249 | FILE * |
| 250 | ldfile_find_command_file (name, extend) |
| 251 | const char *name; |
| 252 | const char *extend; |
| 253 | { |
| 254 | search_dirs_type *search; |
| 255 | FILE *result; |
| 256 | char buffer[1000]; |
| 257 | |
| 258 | /* First try raw name */ |
| 259 | result = try_open(name,""); |
| 260 | if (result == (FILE *)NULL) { |
| 261 | /* Try now prefixes */ |
| 262 | for (search = search_head; |
| 263 | search != (search_dirs_type *)NULL; |
| 264 | search = search->next) { |
| 265 | sprintf(buffer,"%s/%s", search->name, name); |
| 266 | result = try_open(buffer, extend); |
| 267 | if (result)break; |
| 268 | } |
| 269 | } |
| 270 | return result; |
| 271 | } |
| 272 | |
| 273 | void |
| 274 | ldfile_open_command_file (name) |
| 275 | const char *name; |
| 276 | { |
| 277 | FILE *ldlex_input_stack; |
| 278 | ldlex_input_stack = ldfile_find_command_file(name, ""); |
| 279 | |
| 280 | if (ldlex_input_stack == (FILE *)NULL) { |
| 281 | bfd_set_error (bfd_error_system_call); |
| 282 | einfo("%P%F: cannot open linker script file %s: %E\n",name); |
| 283 | } |
| 284 | lex_push_file(ldlex_input_stack, name); |
| 285 | |
| 286 | ldfile_input_filename = name; |
| 287 | lineno = 1; |
| 288 | had_script = true; |
| 289 | } |
| 290 | |
| 291 | |
| 292 | |
| 293 | |
| 294 | |
| 295 | #ifdef GNU960 |
| 296 | static |
| 297 | char * |
| 298 | gnu960_map_archname( name ) |
| 299 | char *name; |
| 300 | { |
| 301 | struct tabentry { char *cmd_switch; char *arch; }; |
| 302 | static struct tabentry arch_tab[] = { |
| 303 | "", "", |
| 304 | "KA", "ka", |
| 305 | "KB", "kb", |
| 306 | "KC", "mc", /* Synonym for MC */ |
| 307 | "MC", "mc", |
| 308 | "CA", "ca", |
| 309 | "SA", "ka", /* Functionally equivalent to KA */ |
| 310 | "SB", "kb", /* Functionally equivalent to KB */ |
| 311 | NULL, "" |
| 312 | }; |
| 313 | struct tabentry *tp; |
| 314 | |
| 315 | |
| 316 | for ( tp = arch_tab; tp->cmd_switch != NULL; tp++ ){ |
| 317 | if ( !strcmp(name,tp->cmd_switch) ){ |
| 318 | break; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | if ( tp->cmd_switch == NULL ){ |
| 323 | einfo("%P%F: unknown architecture: %s\n",name); |
| 324 | } |
| 325 | return tp->arch; |
| 326 | } |
| 327 | |
| 328 | |
| 329 | |
| 330 | void |
| 331 | ldfile_add_arch(name) |
| 332 | char *name; |
| 333 | { |
| 334 | search_arch_type *new = |
| 335 | (search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type))); |
| 336 | |
| 337 | |
| 338 | if (*name != '\0') { |
| 339 | if (ldfile_output_machine_name[0] != '\0') { |
| 340 | einfo("%P%F: target architecture respecified\n"); |
| 341 | return; |
| 342 | } |
| 343 | ldfile_output_machine_name = name; |
| 344 | } |
| 345 | |
| 346 | new->next = (search_arch_type*)NULL; |
| 347 | new->name = gnu960_map_archname( name ); |
| 348 | *search_arch_tail_ptr = new; |
| 349 | search_arch_tail_ptr = &new->next; |
| 350 | |
| 351 | } |
| 352 | |
| 353 | #else /* not GNU960 */ |
| 354 | |
| 355 | |
| 356 | void |
| 357 | ldfile_add_arch (in_name) |
| 358 | CONST char * in_name; |
| 359 | { |
| 360 | char *name = buystring(in_name); |
| 361 | search_arch_type *new = |
| 362 | (search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type))); |
| 363 | |
| 364 | ldfile_output_machine_name = in_name; |
| 365 | |
| 366 | new->name = name; |
| 367 | new->next = (search_arch_type*)NULL; |
| 368 | while (*name) { |
| 369 | if (isupper(*name)) *name = tolower(*name); |
| 370 | name++; |
| 371 | } |
| 372 | *search_arch_tail_ptr = new; |
| 373 | search_arch_tail_ptr = &new->next; |
| 374 | |
| 375 | } |
| 376 | #endif |
| 377 | |
| 378 | /* Set the output architecture */ |
| 379 | void |
| 380 | ldfile_set_output_arch (string) |
| 381 | CONST char *string; |
| 382 | { |
| 383 | bfd_arch_info_type *arch = bfd_scan_arch(string); |
| 384 | |
| 385 | if (arch) { |
| 386 | ldfile_output_architecture = arch->arch; |
| 387 | ldfile_output_machine = arch->mach; |
| 388 | ldfile_output_machine_name = arch->printable_name; |
| 389 | } |
| 390 | else { |
| 391 | einfo("%P%F: cannot represent machine `%s'\n", string); |
| 392 | } |
| 393 | } |