| 1 | |
| 2 | /* Copyright (C) 1991 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GLD, the Gnu Linker. |
| 5 | |
| 6 | GLD is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 1, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GLD is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GLD; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* |
| 21 | ldfile.c |
| 22 | |
| 23 | look after all the file stuff |
| 24 | |
| 25 | */ |
| 26 | |
| 27 | #include "bfd.h" |
| 28 | #include "sysdep.h" |
| 29 | |
| 30 | #include "ldmisc.h" |
| 31 | #include "ldlang.h" |
| 32 | #include "ldfile.h" |
| 33 | #include <ctype.h> |
| 34 | /* EXPORT */ |
| 35 | char *ldfile_input_filename; |
| 36 | CONST char * ldfile_output_machine_name =""; |
| 37 | unsigned long ldfile_output_machine; |
| 38 | enum bfd_architecture ldfile_output_architecture; |
| 39 | |
| 40 | /* IMPORT */ |
| 41 | |
| 42 | extern boolean had_script; |
| 43 | extern boolean trace_file_tries; |
| 44 | |
| 45 | |
| 46 | #ifdef VMS |
| 47 | char *slash = ""; |
| 48 | #else |
| 49 | char *slash = "/"; |
| 50 | #endif |
| 51 | |
| 52 | |
| 53 | |
| 54 | |
| 55 | /* LOCAL */ |
| 56 | typedef struct search_dirs |
| 57 | { |
| 58 | char *name; |
| 59 | struct search_dirs *next; |
| 60 | } search_dirs_type; |
| 61 | |
| 62 | static search_dirs_type *search_head; |
| 63 | static search_dirs_type **search_tail_ptr = &search_head; |
| 64 | |
| 65 | typedef struct search_arch |
| 66 | { |
| 67 | char *name; |
| 68 | struct search_arch *next; |
| 69 | } search_arch_type; |
| 70 | |
| 71 | static search_arch_type *search_arch_head; |
| 72 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; |
| 73 | |
| 74 | |
| 75 | |
| 76 | void |
| 77 | ldfile_add_library_path(name) |
| 78 | char *name; |
| 79 | { |
| 80 | search_dirs_type *new = |
| 81 | (search_dirs_type *)ldmalloc((bfd_size_type)(sizeof(search_dirs_type))); |
| 82 | new->name = name; |
| 83 | new->next = (search_dirs_type*)NULL; |
| 84 | *search_tail_ptr = new; |
| 85 | search_tail_ptr = &new->next; |
| 86 | } |
| 87 | |
| 88 | |
| 89 | static bfd* |
| 90 | cached_bfd_openr(attempt,entry) |
| 91 | char *attempt; |
| 92 | lang_input_statement_type *entry; |
| 93 | { |
| 94 | entry->the_bfd = bfd_openr(attempt, entry->target); |
| 95 | if (trace_file_tries == true ) { |
| 96 | info("attempt to open %s %s\n", attempt, |
| 97 | (entry->the_bfd == (bfd *)NULL) ? "failed" : "succeeded" ); |
| 98 | } |
| 99 | return entry->the_bfd; |
| 100 | } |
| 101 | |
| 102 | static bfd * |
| 103 | open_a(arch, entry, lib, suffix) |
| 104 | char *arch; |
| 105 | lang_input_statement_type *entry; |
| 106 | char *lib; |
| 107 | char *suffix; |
| 108 | { |
| 109 | bfd*desc; |
| 110 | search_dirs_type *search ; |
| 111 | for (search = search_head; |
| 112 | search != (search_dirs_type *)NULL; |
| 113 | search = search->next) |
| 114 | { |
| 115 | char buffer[1000]; |
| 116 | char *string; |
| 117 | if (entry->is_archive == true) { |
| 118 | sprintf(buffer, |
| 119 | "%s%s%s%s%s%s", |
| 120 | search->name, |
| 121 | slash, |
| 122 | lib, |
| 123 | entry->filename, arch, suffix); |
| 124 | } |
| 125 | else { |
| 126 | if (entry->filename[0] == '/' || entry->filename[0] == '.') { |
| 127 | strcpy(buffer, entry->filename); |
| 128 | } else { |
| 129 | sprintf(buffer,"%s%s%s",search->name, slash, entry->filename); |
| 130 | } |
| 131 | } |
| 132 | string = buystring(buffer); |
| 133 | desc = cached_bfd_openr (string, entry); |
| 134 | if (desc) |
| 135 | { |
| 136 | entry->filename = string; |
| 137 | entry->search_dirs_flag = false; |
| 138 | entry->the_bfd = desc; |
| 139 | return desc; |
| 140 | } |
| 141 | free(string); |
| 142 | } |
| 143 | return (bfd *)NULL; |
| 144 | } |
| 145 | |
| 146 | /* Open the input file specified by 'entry', and return a descriptor. |
| 147 | The open file is remembered; if the same file is opened twice in a row, |
| 148 | a new open is not actually done. */ |
| 149 | |
| 150 | void |
| 151 | ldfile_open_file (entry) |
| 152 | lang_input_statement_type *entry; |
| 153 | { |
| 154 | |
| 155 | if (entry->superfile) |
| 156 | ldfile_open_file (entry->superfile); |
| 157 | |
| 158 | if (entry->search_dirs_flag) |
| 159 | { |
| 160 | search_arch_type *arch; |
| 161 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ |
| 162 | |
| 163 | for (arch = search_arch_head; |
| 164 | arch != (search_arch_type *)NULL; |
| 165 | arch = arch->next) { |
| 166 | if (open_a(arch->name,entry,"lib",".a") != (bfd *)NULL) { |
| 167 | return; |
| 168 | } |
| 169 | #ifdef VMS |
| 170 | if (open_a(arch->name,entry,":lib",".a") != (bfd *)NULL) { |
| 171 | return; |
| 172 | } |
| 173 | #endif |
| 174 | |
| 175 | } |
| 176 | |
| 177 | } |
| 178 | else { |
| 179 | entry->the_bfd = cached_bfd_openr (entry->filename, entry); |
| 180 | } |
| 181 | |
| 182 | if (!entry->the_bfd) |
| 183 | einfo("%F%P: cannot open %s: %E\n", entry->local_sym_name); |
| 184 | } |
| 185 | |
| 186 | |
| 187 | /* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */ |
| 188 | |
| 189 | static FILE * |
| 190 | try_open(name, exten) |
| 191 | char *name; |
| 192 | char *exten; |
| 193 | { |
| 194 | FILE *result; |
| 195 | char buff[1000]; |
| 196 | |
| 197 | result = fopen(name, "r"); |
| 198 | if (trace_file_tries == true) { |
| 199 | if (result == (FILE *)NULL) { |
| 200 | info("can't find "); |
| 201 | } |
| 202 | info("%s\n",name); |
| 203 | } |
| 204 | if (result != (FILE *)NULL) { |
| 205 | return result; |
| 206 | } |
| 207 | |
| 208 | if (*exten) { |
| 209 | sprintf(buff, "%s%s", name, exten); |
| 210 | result = fopen(buff, "r"); |
| 211 | if (trace_file_tries == true) { |
| 212 | if (result == (FILE *)NULL) { |
| 213 | info("can't find "); |
| 214 | } |
| 215 | info("%s\n", buff); |
| 216 | } |
| 217 | } |
| 218 | return result; |
| 219 | } |
| 220 | |
| 221 | /* Try to open NAME; if that fails, look for it in any directories |
| 222 | specified with -L, without and with EXTEND apppended. */ |
| 223 | |
| 224 | static FILE * |
| 225 | find_a_name(name, extend) |
| 226 | char *name; |
| 227 | char *extend; |
| 228 | { |
| 229 | search_dirs_type *search; |
| 230 | FILE *result; |
| 231 | char buffer[1000]; |
| 232 | |
| 233 | /* First try raw name */ |
| 234 | result = try_open(name,""); |
| 235 | if (result == (FILE *)NULL) { |
| 236 | /* Try now prefixes */ |
| 237 | for (search = search_head; |
| 238 | search != (search_dirs_type *)NULL; |
| 239 | search = search->next) { |
| 240 | sprintf(buffer,"%s/%s", search->name, name); |
| 241 | result = try_open(buffer, extend); |
| 242 | if (result)break; |
| 243 | } |
| 244 | } |
| 245 | return result; |
| 246 | } |
| 247 | |
| 248 | void |
| 249 | ldfile_open_command_file(name) |
| 250 | char *name; |
| 251 | { |
| 252 | FILE *ldlex_input_stack; |
| 253 | ldlex_input_stack = find_a_name(name, ""); |
| 254 | |
| 255 | if (ldlex_input_stack == (FILE *)NULL) { |
| 256 | einfo("%P%F: cannot open load script file %s: %E\n",name); |
| 257 | } |
| 258 | lex_push_file(ldlex_input_stack, name); |
| 259 | |
| 260 | ldfile_input_filename = name; |
| 261 | had_script = true; |
| 262 | } |
| 263 | |
| 264 | |
| 265 | |
| 266 | |
| 267 | |
| 268 | #ifdef GNU960 |
| 269 | static |
| 270 | char * |
| 271 | gnu960_map_archname( name ) |
| 272 | char *name; |
| 273 | { |
| 274 | struct tabentry { char *cmd_switch; char *arch; }; |
| 275 | static struct tabentry arch_tab[] = { |
| 276 | "", "", |
| 277 | "KA", "ka", |
| 278 | "KB", "kb", |
| 279 | "KC", "mc", /* Synonym for MC */ |
| 280 | "MC", "mc", |
| 281 | "CA", "ca", |
| 282 | "SA", "ka", /* Functionally equivalent to KA */ |
| 283 | "SB", "kb", /* Functionally equivalent to KB */ |
| 284 | NULL, "" |
| 285 | }; |
| 286 | struct tabentry *tp; |
| 287 | |
| 288 | |
| 289 | for ( tp = arch_tab; tp->cmd_switch != NULL; tp++ ){ |
| 290 | if ( !strcmp(name,tp->cmd_switch) ){ |
| 291 | break; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | if ( tp->cmd_switch == NULL ){ |
| 296 | einfo("%P%F: unknown architecture: %s\n",name); |
| 297 | } |
| 298 | return tp->arch; |
| 299 | } |
| 300 | |
| 301 | |
| 302 | |
| 303 | void |
| 304 | ldfile_add_arch(name) |
| 305 | char *name; |
| 306 | { |
| 307 | search_arch_type *new = |
| 308 | (search_arch_type *)ldmalloc((bfd_size_type)(sizeof(search_arch_type))); |
| 309 | |
| 310 | |
| 311 | if (*name != '\0') { |
| 312 | if (ldfile_output_machine_name[0] != '\0') { |
| 313 | einfo("%P%F: target architecture respecified\n"); |
| 314 | return; |
| 315 | } |
| 316 | ldfile_output_machine_name = name; |
| 317 | } |
| 318 | |
| 319 | new->next = (search_arch_type*)NULL; |
| 320 | new->name = gnu960_map_archname( name ); |
| 321 | *search_arch_tail_ptr = new; |
| 322 | search_arch_tail_ptr = &new->next; |
| 323 | |
| 324 | } |
| 325 | |
| 326 | #else /* not GNU960 */ |
| 327 | |
| 328 | |
| 329 | void |
| 330 | ldfile_add_arch (in_name) |
| 331 | CONST char * in_name; |
| 332 | { |
| 333 | char *name = buystring(in_name); |
| 334 | search_arch_type *new = |
| 335 | (search_arch_type *)ldmalloc((bfd_size_type)(sizeof(search_arch_type))); |
| 336 | |
| 337 | ldfile_output_machine_name = in_name; |
| 338 | |
| 339 | new->name = name; |
| 340 | new->next = (search_arch_type*)NULL; |
| 341 | while (*name) { |
| 342 | if (isupper(*name)) *name = tolower(*name); |
| 343 | name++; |
| 344 | } |
| 345 | *search_arch_tail_ptr = new; |
| 346 | search_arch_tail_ptr = &new->next; |
| 347 | |
| 348 | } |
| 349 | #endif |
| 350 | |
| 351 | /* Set the output architecture */ |
| 352 | void |
| 353 | ldfile_set_output_arch (string) |
| 354 | CONST char *string; |
| 355 | { |
| 356 | bfd_arch_info_type *arch = bfd_scan_arch(string); |
| 357 | |
| 358 | if (arch) { |
| 359 | ldfile_output_architecture = arch->arch; |
| 360 | ldfile_output_machine = arch->mach; |
| 361 | ldfile_output_machine_name = arch->printable_name; |
| 362 | } |
| 363 | else { |
| 364 | einfo("%P%F: Can't represent machine `%s'\n", string); |
| 365 | } |
| 366 | } |