Commit | Line | Data |
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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 | ||
22 | /* | |
23 | ldfile.c | |
24 | ||
25 | look after all the file stuff | |
26 | ||
27 | */ | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | #include "ld.h" | |
33 | #include "ldmisc.h" | |
34 | #include "ldexp.h" | |
35 | #include "ldlang.h" | |
36 | #include "ldfile.h" | |
37 | #include "ldmain.h" | |
38 | #include "ldgram.h" | |
39 | #include "ldlex.h" | |
40 | #include "ldemul.h" | |
41 | ||
42 | #include <ctype.h> | |
43 | ||
44 | const char *ldfile_input_filename; | |
45 | boolean ldfile_assumed_script = false; | |
46 | const char *ldfile_output_machine_name = ""; | |
47 | unsigned long ldfile_output_machine; | |
48 | enum bfd_architecture ldfile_output_architecture; | |
49 | search_dirs_type *search_head; | |
50 | ||
51 | #ifndef MPW | |
52 | #ifdef VMS | |
53 | char *slash = ""; | |
54 | #else | |
55 | #if defined (_WIN32) && ! defined (__CYGWIN32__) | |
56 | char *slash = "\\"; | |
57 | #else | |
58 | char *slash = "/"; | |
59 | #endif | |
60 | #endif | |
61 | #else /* MPW */ | |
62 | /* The MPW path char is a colon. */ | |
63 | char *slash = ":"; | |
64 | #endif /* MPW */ | |
65 | ||
66 | /* LOCAL */ | |
67 | ||
68 | static search_dirs_type **search_tail_ptr = &search_head; | |
69 | ||
70 | typedef struct search_arch | |
71 | { | |
72 | char *name; | |
73 | struct search_arch *next; | |
74 | } search_arch_type; | |
75 | ||
76 | static search_arch_type *search_arch_head; | |
77 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; | |
78 | ||
252b5132 RH |
79 | static FILE *try_open PARAMS ((const char *name, const char *exten)); |
80 | ||
81 | void | |
82 | ldfile_add_library_path (name, cmdline) | |
83 | const char *name; | |
84 | boolean cmdline; | |
85 | { | |
86 | search_dirs_type *new; | |
87 | ||
88 | new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type)); | |
89 | new->next = NULL; | |
90 | new->name = name; | |
91 | new->cmdline = cmdline; | |
92 | *search_tail_ptr = new; | |
93 | search_tail_ptr = &new->next; | |
94 | } | |
95 | ||
96 | /* Try to open a BFD for a lang_input_statement. */ | |
97 | ||
98 | boolean | |
99 | ldfile_try_open_bfd (attempt, entry) | |
100 | const char *attempt; | |
101 | lang_input_statement_type *entry; | |
102 | { | |
103 | entry->the_bfd = bfd_openr (attempt, entry->target); | |
104 | ||
105 | if (trace_file_tries) | |
106 | { | |
107 | if (entry->the_bfd == NULL) | |
108 | info_msg (_("attempt to open %s failed\n"), attempt); | |
109 | else | |
110 | info_msg (_("attempt to open %s succeeded\n"), attempt); | |
111 | } | |
112 | ||
b90d1146 | 113 | if (entry->the_bfd == NULL) |
252b5132 RH |
114 | { |
115 | if (bfd_get_error () == bfd_error_invalid_target) | |
116 | einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target); | |
117 | return false; | |
118 | } | |
b90d1146 ILT |
119 | |
120 | /* If we are searching for this file, see if the architecture is | |
121 | compatible with the output file. If it isn't, keep searching. | |
122 | If we can't open the file as an object file, stop the search | |
123 | here. */ | |
124 | ||
125 | if (entry->search_dirs_flag) | |
126 | { | |
127 | bfd *check; | |
128 | ||
129 | if (bfd_check_format (entry->the_bfd, bfd_archive)) | |
130 | check = bfd_openr_next_archived_file (entry->the_bfd, NULL); | |
131 | else | |
132 | check = entry->the_bfd; | |
133 | ||
a9998805 | 134 | if (check != NULL) |
b90d1146 | 135 | { |
a9998805 ILT |
136 | if (! bfd_check_format (check, bfd_object)) |
137 | return true; | |
138 | if (bfd_arch_get_compatible (check, output_bfd) == NULL) | |
139 | { | |
140 | einfo (_("%P: skipping incompatible %s when searching for %s"), | |
141 | attempt, entry->local_sym_name); | |
142 | bfd_close (entry->the_bfd); | |
143 | entry->the_bfd = NULL; | |
144 | return false; | |
145 | } | |
b90d1146 ILT |
146 | } |
147 | } | |
148 | ||
149 | return true; | |
252b5132 RH |
150 | } |
151 | ||
152 | /* Search for and open the file specified by ENTRY. If it is an | |
153 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ | |
154 | ||
344a211f | 155 | boolean |
252b5132 RH |
156 | ldfile_open_file_search (arch, entry, lib, suffix) |
157 | const char *arch; | |
158 | lang_input_statement_type *entry; | |
159 | const char *lib; | |
160 | const char *suffix; | |
161 | { | |
162 | search_dirs_type *search; | |
163 | ||
164 | /* If this is not an archive, try to open it in the current | |
165 | directory first. */ | |
166 | if (! entry->is_archive) | |
167 | { | |
168 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
169 | return true; | |
170 | } | |
171 | ||
172 | for (search = search_head; | |
173 | search != (search_dirs_type *)NULL; | |
174 | search = search->next) | |
175 | { | |
176 | char *string; | |
177 | ||
178 | if (entry->dynamic && ! link_info.relocateable) | |
179 | { | |
180 | if (ldemul_open_dynamic_archive (arch, search, entry)) | |
181 | return true; | |
182 | } | |
183 | ||
184 | string = (char *) xmalloc (strlen (search->name) | |
185 | + strlen (slash) | |
186 | + strlen (lib) | |
187 | + strlen (entry->filename) | |
188 | + strlen (arch) | |
189 | + strlen (suffix) | |
190 | + 1); | |
191 | ||
192 | if (entry->is_archive) | |
193 | sprintf (string, "%s%s%s%s%s%s", search->name, slash, | |
194 | lib, entry->filename, arch, suffix); | |
195 | else if (entry->filename[0] == '/' || entry->filename[0] == '.' | |
196 | #if defined (__MSDOS__) || defined (_WIN32) | |
197 | || entry->filename[0] == '\\' | |
198 | || (isalpha (entry->filename[0]) | |
199 | && entry->filename[1] == ':') | |
200 | #endif | |
201 | ) | |
202 | strcpy (string, entry->filename); | |
203 | else | |
204 | sprintf (string, "%s%s%s", search->name, slash, entry->filename); | |
205 | ||
206 | if (ldfile_try_open_bfd (string, entry)) | |
207 | { | |
b90d1146 ILT |
208 | entry->filename = string; |
209 | return true; | |
252b5132 RH |
210 | } |
211 | ||
212 | free (string); | |
213 | } | |
214 | ||
215 | return false; | |
216 | } | |
217 | ||
218 | /* Open the input file specified by ENTRY. */ | |
219 | ||
220 | void | |
221 | ldfile_open_file (entry) | |
222 | lang_input_statement_type *entry; | |
223 | { | |
224 | if (entry->the_bfd != NULL) | |
225 | return; | |
226 | ||
227 | if (! entry->search_dirs_flag) | |
228 | { | |
229 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
230 | return; | |
231 | if (strcmp (entry->filename, entry->local_sym_name) != 0) | |
232 | einfo (_("%F%P: cannot open %s for %s: %E\n"), | |
233 | entry->filename, entry->local_sym_name); | |
234 | else | |
235 | einfo(_("%F%P: cannot open %s: %E\n"), entry->local_sym_name); | |
236 | } | |
237 | else | |
238 | { | |
239 | search_arch_type *arch; | |
240 | ||
241 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ | |
242 | for (arch = search_arch_head; | |
243 | arch != (search_arch_type *) NULL; | |
244 | arch = arch->next) | |
245 | { | |
246 | if (ldfile_open_file_search (arch->name, entry, "lib", ".a")) | |
247 | return; | |
248 | #ifdef VMS | |
249 | if (ldfile_open_file_search (arch->name, entry, ":lib", ".a")) | |
250 | return; | |
251 | #endif | |
344a211f NC |
252 | if (ldemul_find_potential_libraries (arch->name, entry)) |
253 | return; | |
252b5132 RH |
254 | } |
255 | einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name); | |
256 | } | |
257 | } | |
258 | ||
259 | /* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */ | |
260 | ||
261 | static FILE * | |
262 | try_open (name, exten) | |
263 | const char *name; | |
264 | const char *exten; | |
265 | { | |
266 | FILE *result; | |
267 | char buff[1000]; | |
268 | ||
269 | result = fopen (name, "r"); | |
270 | if (trace_file_tries) | |
271 | { | |
272 | if (result == NULL) | |
273 | info_msg (_("cannot find script file %s\n"), name); | |
274 | else | |
275 | info_msg (_("opened script file %s\n"), name); | |
276 | } | |
277 | ||
278 | if (result != NULL) | |
279 | return result; | |
280 | ||
281 | if (*exten) | |
282 | { | |
283 | sprintf (buff, "%s%s", name, exten); | |
284 | result = fopen (buff, "r"); | |
285 | if (trace_file_tries) | |
286 | { | |
287 | if (result == NULL) | |
288 | info_msg (_("cannot find script file %s\n"), buff); | |
289 | else | |
290 | info_msg (_("opened script file %s\n"), buff); | |
291 | } | |
292 | } | |
293 | ||
294 | return result; | |
295 | } | |
296 | ||
297 | /* Try to open NAME; if that fails, look for it in any directories | |
298 | specified with -L, without and with EXTEND apppended. */ | |
299 | ||
300 | FILE * | |
301 | ldfile_find_command_file (name, extend) | |
302 | const char *name; | |
303 | const char *extend; | |
304 | { | |
305 | search_dirs_type *search; | |
306 | FILE *result; | |
307 | char buffer[1000]; | |
308 | ||
309 | /* First try raw name */ | |
310 | result = try_open(name,""); | |
311 | if (result == (FILE *)NULL) { | |
312 | /* Try now prefixes */ | |
313 | for (search = search_head; | |
314 | search != (search_dirs_type *)NULL; | |
315 | search = search->next) { | |
316 | sprintf(buffer,"%s%s%s", search->name, slash, name); | |
317 | result = try_open(buffer, extend); | |
318 | if (result)break; | |
319 | } | |
320 | } | |
321 | return result; | |
322 | } | |
323 | ||
324 | void | |
325 | ldfile_open_command_file (name) | |
326 | const char *name; | |
327 | { | |
328 | FILE *ldlex_input_stack; | |
329 | ldlex_input_stack = ldfile_find_command_file(name, ""); | |
330 | ||
331 | if (ldlex_input_stack == (FILE *)NULL) { | |
332 | bfd_set_error (bfd_error_system_call); | |
333 | einfo(_("%P%F: cannot open linker script file %s: %E\n"),name); | |
334 | } | |
335 | lex_push_file(ldlex_input_stack, name); | |
336 | ||
337 | ldfile_input_filename = name; | |
338 | lineno = 1; | |
339 | had_script = true; | |
340 | } | |
341 | ||
342 | ||
343 | ||
344 | ||
345 | ||
346 | #ifdef GNU960 | |
347 | static | |
348 | char * | |
349 | gnu960_map_archname( name ) | |
350 | char *name; | |
351 | { | |
352 | struct tabentry { char *cmd_switch; char *arch; }; | |
353 | static struct tabentry arch_tab[] = { | |
354 | "", "", | |
355 | "KA", "ka", | |
356 | "KB", "kb", | |
357 | "KC", "mc", /* Synonym for MC */ | |
358 | "MC", "mc", | |
359 | "CA", "ca", | |
360 | "SA", "ka", /* Functionally equivalent to KA */ | |
361 | "SB", "kb", /* Functionally equivalent to KB */ | |
362 | NULL, "" | |
363 | }; | |
364 | struct tabentry *tp; | |
365 | ||
366 | ||
367 | for ( tp = arch_tab; tp->cmd_switch != NULL; tp++ ){ | |
368 | if ( !strcmp(name,tp->cmd_switch) ){ | |
369 | break; | |
370 | } | |
371 | } | |
372 | ||
373 | if ( tp->cmd_switch == NULL ){ | |
374 | einfo(_("%P%F: unknown architecture: %s\n"),name); | |
375 | } | |
376 | return tp->arch; | |
377 | } | |
378 | ||
379 | ||
380 | ||
381 | void | |
382 | ldfile_add_arch(name) | |
383 | char *name; | |
384 | { | |
385 | search_arch_type *new = | |
386 | (search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type))); | |
387 | ||
388 | ||
389 | if (*name != '\0') { | |
390 | if (ldfile_output_machine_name[0] != '\0') { | |
391 | einfo(_("%P%F: target architecture respecified\n")); | |
392 | return; | |
393 | } | |
394 | ldfile_output_machine_name = name; | |
395 | } | |
396 | ||
397 | new->next = (search_arch_type*)NULL; | |
398 | new->name = gnu960_map_archname( name ); | |
399 | *search_arch_tail_ptr = new; | |
400 | search_arch_tail_ptr = &new->next; | |
401 | ||
402 | } | |
403 | ||
404 | #else /* not GNU960 */ | |
405 | ||
406 | ||
407 | void | |
408 | ldfile_add_arch (in_name) | |
409 | CONST char * in_name; | |
410 | { | |
411 | char *name = buystring(in_name); | |
412 | search_arch_type *new = | |
413 | (search_arch_type *) xmalloc (sizeof (search_arch_type)); | |
414 | ||
415 | ldfile_output_machine_name = in_name; | |
416 | ||
417 | new->name = name; | |
418 | new->next = (search_arch_type*)NULL; | |
419 | while (*name) | |
420 | { | |
421 | if (isupper ((unsigned char) *name)) | |
422 | *name = tolower ((unsigned char) *name); | |
423 | name++; | |
424 | } | |
425 | *search_arch_tail_ptr = new; | |
426 | search_arch_tail_ptr = &new->next; | |
427 | ||
428 | } | |
429 | #endif | |
430 | ||
431 | /* Set the output architecture */ | |
432 | void | |
433 | ldfile_set_output_arch (string) | |
434 | CONST char *string; | |
435 | { | |
436 | const bfd_arch_info_type *arch = bfd_scan_arch(string); | |
437 | ||
438 | if (arch) { | |
439 | ldfile_output_architecture = arch->arch; | |
440 | ldfile_output_machine = arch->mach; | |
441 | ldfile_output_machine_name = arch->printable_name; | |
442 | } | |
443 | else { | |
444 | einfo(_("%P%F: cannot represent machine `%s'\n"), string); | |
445 | } | |
446 | } |