Commit | Line | Data |
---|---|---|
a9998805 ILT |
1 | /* Linker file opening and searching. |
2 | Copyright (C) 1991, 92, 93, 94, 95, 98, 99, 2000 | |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 | ||
1c64c4ed | 22 | /* ldfile.c: look after all the file stuff. */ |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "bfdlink.h" | |
27 | #include "ld.h" | |
28 | #include "ldmisc.h" | |
29 | #include "ldexp.h" | |
30 | #include "ldlang.h" | |
31 | #include "ldfile.h" | |
32 | #include "ldmain.h" | |
33 | #include "ldgram.h" | |
34 | #include "ldlex.h" | |
35 | #include "ldemul.h" | |
36 | ||
37 | #include <ctype.h> | |
38 | ||
39 | const char *ldfile_input_filename; | |
40 | boolean ldfile_assumed_script = false; | |
41 | const char *ldfile_output_machine_name = ""; | |
42 | unsigned long ldfile_output_machine; | |
43 | enum bfd_architecture ldfile_output_architecture; | |
44 | search_dirs_type *search_head; | |
45 | ||
46 | #ifndef MPW | |
47 | #ifdef VMS | |
48 | char *slash = ""; | |
49 | #else | |
50 | #if defined (_WIN32) && ! defined (__CYGWIN32__) | |
51 | char *slash = "\\"; | |
52 | #else | |
53 | char *slash = "/"; | |
54 | #endif | |
55 | #endif | |
56 | #else /* MPW */ | |
1c64c4ed | 57 | /* The MPW path char is a colon. */ |
252b5132 RH |
58 | char *slash = ":"; |
59 | #endif /* MPW */ | |
60 | ||
61 | /* LOCAL */ | |
62 | ||
63 | static search_dirs_type **search_tail_ptr = &search_head; | |
64 | ||
4de2d33d | 65 | typedef struct search_arch |
252b5132 | 66 | { |
4de2d33d | 67 | char *name; |
252b5132 RH |
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; | |
4de2d33d | 73 | |
252b5132 RH |
74 | static FILE *try_open PARAMS ((const char *name, const char *exten)); |
75 | ||
76 | void | |
77 | ldfile_add_library_path (name, cmdline) | |
78 | const char *name; | |
79 | boolean cmdline; | |
80 | { | |
81 | search_dirs_type *new; | |
82 | ||
83 | new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type)); | |
84 | new->next = NULL; | |
85 | new->name = name; | |
86 | new->cmdline = cmdline; | |
87 | *search_tail_ptr = new; | |
88 | search_tail_ptr = &new->next; | |
89 | } | |
90 | ||
91 | /* Try to open a BFD for a lang_input_statement. */ | |
92 | ||
93 | boolean | |
94 | ldfile_try_open_bfd (attempt, entry) | |
95 | const char *attempt; | |
96 | lang_input_statement_type *entry; | |
97 | { | |
98 | entry->the_bfd = bfd_openr (attempt, entry->target); | |
99 | ||
100 | if (trace_file_tries) | |
101 | { | |
102 | if (entry->the_bfd == NULL) | |
103 | info_msg (_("attempt to open %s failed\n"), attempt); | |
104 | else | |
105 | info_msg (_("attempt to open %s succeeded\n"), attempt); | |
106 | } | |
107 | ||
b90d1146 | 108 | if (entry->the_bfd == NULL) |
252b5132 RH |
109 | { |
110 | if (bfd_get_error () == bfd_error_invalid_target) | |
111 | einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target); | |
112 | return false; | |
113 | } | |
b90d1146 ILT |
114 | |
115 | /* If we are searching for this file, see if the architecture is | |
116 | compatible with the output file. If it isn't, keep searching. | |
117 | If we can't open the file as an object file, stop the search | |
118 | here. */ | |
119 | ||
120 | if (entry->search_dirs_flag) | |
121 | { | |
122 | bfd *check; | |
123 | ||
124 | if (bfd_check_format (entry->the_bfd, bfd_archive)) | |
125 | check = bfd_openr_next_archived_file (entry->the_bfd, NULL); | |
126 | else | |
127 | check = entry->the_bfd; | |
128 | ||
a9998805 | 129 | if (check != NULL) |
b90d1146 | 130 | { |
a9998805 ILT |
131 | if (! bfd_check_format (check, bfd_object)) |
132 | return true; | |
133 | if (bfd_arch_get_compatible (check, output_bfd) == NULL) | |
134 | { | |
1c64c4ed | 135 | einfo (_("%P: skipping incompatible %s when searching for %s\n"), |
a9998805 ILT |
136 | attempt, entry->local_sym_name); |
137 | bfd_close (entry->the_bfd); | |
138 | entry->the_bfd = NULL; | |
139 | return false; | |
140 | } | |
b90d1146 ILT |
141 | } |
142 | } | |
143 | ||
144 | return true; | |
252b5132 RH |
145 | } |
146 | ||
147 | /* Search for and open the file specified by ENTRY. If it is an | |
148 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ | |
149 | ||
344a211f | 150 | boolean |
252b5132 RH |
151 | ldfile_open_file_search (arch, entry, lib, suffix) |
152 | const char *arch; | |
153 | lang_input_statement_type *entry; | |
154 | const char *lib; | |
155 | const char *suffix; | |
156 | { | |
157 | search_dirs_type *search; | |
158 | ||
159 | /* If this is not an archive, try to open it in the current | |
160 | directory first. */ | |
161 | if (! entry->is_archive) | |
162 | { | |
163 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
164 | return true; | |
165 | } | |
166 | ||
167 | for (search = search_head; | |
168 | search != (search_dirs_type *)NULL; | |
4de2d33d | 169 | search = search->next) |
252b5132 RH |
170 | { |
171 | char *string; | |
172 | ||
173 | if (entry->dynamic && ! link_info.relocateable) | |
174 | { | |
175 | if (ldemul_open_dynamic_archive (arch, search, entry)) | |
176 | return true; | |
177 | } | |
178 | ||
179 | string = (char *) xmalloc (strlen (search->name) | |
180 | + strlen (slash) | |
181 | + strlen (lib) | |
182 | + strlen (entry->filename) | |
183 | + strlen (arch) | |
184 | + strlen (suffix) | |
185 | + 1); | |
186 | ||
187 | if (entry->is_archive) | |
188 | sprintf (string, "%s%s%s%s%s%s", search->name, slash, | |
189 | lib, entry->filename, arch, suffix); | |
190 | else if (entry->filename[0] == '/' || entry->filename[0] == '.' | |
191 | #if defined (__MSDOS__) || defined (_WIN32) | |
4de2d33d KH |
192 | || entry->filename[0] == '\\' |
193 | || (isalpha (entry->filename[0]) | |
252b5132 RH |
194 | && entry->filename[1] == ':') |
195 | #endif | |
196 | ) | |
197 | strcpy (string, entry->filename); | |
198 | else | |
199 | sprintf (string, "%s%s%s", search->name, slash, entry->filename); | |
200 | ||
201 | if (ldfile_try_open_bfd (string, entry)) | |
202 | { | |
b90d1146 ILT |
203 | entry->filename = string; |
204 | return true; | |
252b5132 RH |
205 | } |
206 | ||
207 | free (string); | |
208 | } | |
209 | ||
210 | return false; | |
211 | } | |
212 | ||
213 | /* Open the input file specified by ENTRY. */ | |
214 | ||
215 | void | |
216 | ldfile_open_file (entry) | |
217 | lang_input_statement_type *entry; | |
218 | { | |
219 | if (entry->the_bfd != NULL) | |
220 | return; | |
221 | ||
222 | if (! entry->search_dirs_flag) | |
223 | { | |
224 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
225 | return; | |
226 | if (strcmp (entry->filename, entry->local_sym_name) != 0) | |
227 | einfo (_("%F%P: cannot open %s for %s: %E\n"), | |
228 | entry->filename, entry->local_sym_name); | |
229 | else | |
1c64c4ed | 230 | einfo (_("%F%P: cannot open %s: %E\n"), entry->local_sym_name); |
252b5132 RH |
231 | } |
232 | else | |
233 | { | |
234 | search_arch_type *arch; | |
235 | ||
236 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ | |
237 | for (arch = search_arch_head; | |
238 | arch != (search_arch_type *) NULL; | |
239 | arch = arch->next) | |
240 | { | |
241 | if (ldfile_open_file_search (arch->name, entry, "lib", ".a")) | |
242 | return; | |
243 | #ifdef VMS | |
244 | if (ldfile_open_file_search (arch->name, entry, ":lib", ".a")) | |
245 | return; | |
246 | #endif | |
344a211f NC |
247 | if (ldemul_find_potential_libraries (arch->name, entry)) |
248 | return; | |
252b5132 | 249 | } |
4de2d33d | 250 | |
252b5132 RH |
251 | einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name); |
252 | } | |
253 | } | |
254 | ||
255 | /* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */ | |
256 | ||
257 | static FILE * | |
258 | try_open (name, exten) | |
259 | const char *name; | |
260 | const char *exten; | |
261 | { | |
262 | FILE *result; | |
263 | char buff[1000]; | |
264 | ||
265 | result = fopen (name, "r"); | |
4de2d33d | 266 | |
252b5132 RH |
267 | if (trace_file_tries) |
268 | { | |
269 | if (result == NULL) | |
270 | info_msg (_("cannot find script file %s\n"), name); | |
271 | else | |
272 | info_msg (_("opened script file %s\n"), name); | |
273 | } | |
274 | ||
275 | if (result != NULL) | |
276 | return result; | |
277 | ||
278 | if (*exten) | |
279 | { | |
280 | sprintf (buff, "%s%s", name, exten); | |
281 | result = fopen (buff, "r"); | |
4de2d33d | 282 | |
252b5132 RH |
283 | if (trace_file_tries) |
284 | { | |
285 | if (result == NULL) | |
286 | info_msg (_("cannot find script file %s\n"), buff); | |
287 | else | |
288 | info_msg (_("opened script file %s\n"), buff); | |
289 | } | |
290 | } | |
291 | ||
292 | return result; | |
293 | } | |
294 | ||
295 | /* Try to open NAME; if that fails, look for it in any directories | |
296 | specified with -L, without and with EXTEND apppended. */ | |
297 | ||
298 | FILE * | |
299 | ldfile_find_command_file (name, extend) | |
300 | const char *name; | |
301 | const char *extend; | |
302 | { | |
303 | search_dirs_type *search; | |
304 | FILE *result; | |
305 | char buffer[1000]; | |
306 | ||
307 | /* First try raw name */ | |
1c64c4ed NC |
308 | result = try_open (name, ""); |
309 | if (result == (FILE *)NULL) | |
310 | { | |
311 | /* Try now prefixes */ | |
312 | for (search = search_head; | |
313 | search != (search_dirs_type *)NULL; | |
314 | search = search->next) | |
315 | { | |
316 | sprintf (buffer,"%s%s%s", search->name, slash, name); | |
4de2d33d | 317 | |
1c64c4ed NC |
318 | result = try_open (buffer, extend); |
319 | if (result) | |
320 | break; | |
321 | } | |
252b5132 | 322 | } |
4de2d33d | 323 | |
252b5132 RH |
324 | return result; |
325 | } | |
326 | ||
327 | void | |
328 | ldfile_open_command_file (name) | |
329 | const char *name; | |
330 | { | |
331 | FILE *ldlex_input_stack; | |
1c64c4ed | 332 | ldlex_input_stack = ldfile_find_command_file (name, ""); |
252b5132 | 333 | |
1c64c4ed NC |
334 | if (ldlex_input_stack == (FILE *)NULL) |
335 | { | |
336 | bfd_set_error (bfd_error_system_call); | |
337 | einfo (_("%P%F: cannot open linker script file %s: %E\n"), name); | |
338 | } | |
4de2d33d | 339 | |
1c64c4ed | 340 | lex_push_file (ldlex_input_stack, name); |
4de2d33d | 341 | |
252b5132 RH |
342 | ldfile_input_filename = name; |
343 | lineno = 1; | |
344 | had_script = true; | |
345 | } | |
346 | ||
252b5132 | 347 | #ifdef GNU960 |
1c64c4ed NC |
348 | static char * |
349 | gnu960_map_archname (name) | |
350 | char *name; | |
252b5132 RH |
351 | { |
352 | struct tabentry { char *cmd_switch; char *arch; }; | |
1c64c4ed NC |
353 | static struct tabentry arch_tab[] = |
354 | { | |
252b5132 RH |
355 | "", "", |
356 | "KA", "ka", | |
357 | "KB", "kb", | |
358 | "KC", "mc", /* Synonym for MC */ | |
359 | "MC", "mc", | |
360 | "CA", "ca", | |
361 | "SA", "ka", /* Functionally equivalent to KA */ | |
362 | "SB", "kb", /* Functionally equivalent to KB */ | |
363 | NULL, "" | |
364 | }; | |
365 | struct tabentry *tp; | |
252b5132 | 366 | |
1c64c4ed NC |
367 | for (tp = arch_tab; tp->cmd_switch != NULL; tp++) |
368 | { | |
369 | if (! strcmp (name,tp->cmd_switch)) | |
370 | break; | |
252b5132 | 371 | } |
252b5132 | 372 | |
1c64c4ed NC |
373 | if (tp->cmd_switch == NULL) |
374 | einfo (_("%P%F: unknown architecture: %s\n"),name); | |
4de2d33d | 375 | |
252b5132 RH |
376 | return tp->arch; |
377 | } | |
378 | ||
252b5132 | 379 | void |
1c64c4ed NC |
380 | ldfile_add_arch (name) |
381 | char *name; | |
252b5132 RH |
382 | { |
383 | search_arch_type *new = | |
1c64c4ed | 384 | (search_arch_type *)xmalloc ((bfd_size_type)(sizeof (search_arch_type))); |
252b5132 | 385 | |
1c64c4ed NC |
386 | if (*name != '\0') |
387 | { | |
388 | if (ldfile_output_machine_name[0] != '\0') | |
389 | { | |
390 | einfo (_("%P%F: target architecture respecified\n")); | |
391 | return; | |
392 | } | |
4de2d33d | 393 | |
1c64c4ed | 394 | ldfile_output_machine_name = name; |
252b5132 | 395 | } |
252b5132 RH |
396 | |
397 | new->next = (search_arch_type*)NULL; | |
1c64c4ed | 398 | new->name = gnu960_map_archname (name); |
252b5132 RH |
399 | *search_arch_tail_ptr = new; |
400 | search_arch_tail_ptr = &new->next; | |
252b5132 RH |
401 | } |
402 | ||
403 | #else /* not GNU960 */ | |
404 | ||
252b5132 RH |
405 | void |
406 | ldfile_add_arch (in_name) | |
407 | CONST char * in_name; | |
408 | { | |
1c64c4ed | 409 | char *name = buystring (in_name); |
252b5132 RH |
410 | search_arch_type *new = |
411 | (search_arch_type *) xmalloc (sizeof (search_arch_type)); | |
412 | ||
413 | ldfile_output_machine_name = in_name; | |
414 | ||
415 | new->name = name; | |
416 | new->next = (search_arch_type*)NULL; | |
417 | while (*name) | |
418 | { | |
419 | if (isupper ((unsigned char) *name)) | |
420 | *name = tolower ((unsigned char) *name); | |
421 | name++; | |
422 | } | |
423 | *search_arch_tail_ptr = new; | |
424 | search_arch_tail_ptr = &new->next; | |
425 | ||
426 | } | |
427 | #endif | |
428 | ||
429 | /* Set the output architecture */ | |
430 | void | |
431 | ldfile_set_output_arch (string) | |
432 | CONST char *string; | |
433 | { | |
1c64c4ed NC |
434 | const bfd_arch_info_type *arch = bfd_scan_arch (string); |
435 | ||
436 | if (arch) | |
437 | { | |
438 | ldfile_output_architecture = arch->arch; | |
439 | ldfile_output_machine = arch->mach; | |
440 | ldfile_output_machine_name = arch->printable_name; | |
441 | } | |
442 | else | |
443 | { | |
444 | einfo (_("%P%F: cannot represent machine `%s'\n"), string); | |
445 | } | |
252b5132 | 446 | } |