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252b5132 RH |
1 | /* Copyright (C) 1991, 92, 93, 94, 95, 98, 1999 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 2, 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 the Free | |
17 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
18 | 02111-1307, 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 | #include "bfdlink.h" | |
30 | #include "ld.h" | |
31 | #include "ldmisc.h" | |
32 | #include "ldexp.h" | |
33 | #include "ldlang.h" | |
34 | #include "ldfile.h" | |
35 | #include "ldmain.h" | |
36 | #include "ldgram.h" | |
37 | #include "ldlex.h" | |
38 | #include "ldemul.h" | |
39 | ||
40 | #include <ctype.h> | |
41 | ||
42 | const char *ldfile_input_filename; | |
43 | boolean ldfile_assumed_script = false; | |
44 | const char *ldfile_output_machine_name = ""; | |
45 | unsigned long ldfile_output_machine; | |
46 | enum bfd_architecture ldfile_output_architecture; | |
47 | search_dirs_type *search_head; | |
48 | ||
49 | #ifndef MPW | |
50 | #ifdef VMS | |
51 | char *slash = ""; | |
52 | #else | |
53 | #if defined (_WIN32) && ! defined (__CYGWIN32__) | |
54 | char *slash = "\\"; | |
55 | #else | |
56 | char *slash = "/"; | |
57 | #endif | |
58 | #endif | |
59 | #else /* MPW */ | |
60 | /* The MPW path char is a colon. */ | |
61 | char *slash = ":"; | |
62 | #endif /* MPW */ | |
63 | ||
64 | /* LOCAL */ | |
65 | ||
66 | static search_dirs_type **search_tail_ptr = &search_head; | |
67 | ||
68 | typedef struct search_arch | |
69 | { | |
70 | char *name; | |
71 | struct search_arch *next; | |
72 | } search_arch_type; | |
73 | ||
74 | static search_arch_type *search_arch_head; | |
75 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; | |
76 | ||
77 | static boolean ldfile_open_file_search | |
78 | PARAMS ((const char *arch, lang_input_statement_type *, | |
79 | const char *lib, const char *suffix)); | |
80 | static FILE *try_open PARAMS ((const char *name, const char *exten)); | |
81 | ||
82 | void | |
83 | ldfile_add_library_path (name, cmdline) | |
84 | const char *name; | |
85 | boolean cmdline; | |
86 | { | |
87 | search_dirs_type *new; | |
88 | ||
89 | new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type)); | |
90 | new->next = NULL; | |
91 | new->name = name; | |
92 | new->cmdline = cmdline; | |
93 | *search_tail_ptr = new; | |
94 | search_tail_ptr = &new->next; | |
95 | } | |
96 | ||
97 | /* Try to open a BFD for a lang_input_statement. */ | |
98 | ||
99 | boolean | |
100 | ldfile_try_open_bfd (attempt, entry) | |
101 | const char *attempt; | |
102 | lang_input_statement_type *entry; | |
103 | { | |
104 | entry->the_bfd = bfd_openr (attempt, entry->target); | |
105 | ||
106 | if (trace_file_tries) | |
107 | { | |
108 | if (entry->the_bfd == NULL) | |
109 | info_msg (_("attempt to open %s failed\n"), attempt); | |
110 | else | |
111 | info_msg (_("attempt to open %s succeeded\n"), attempt); | |
112 | } | |
113 | ||
b90d1146 | 114 | if (entry->the_bfd == NULL) |
252b5132 RH |
115 | { |
116 | if (bfd_get_error () == bfd_error_invalid_target) | |
117 | einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target); | |
118 | return false; | |
119 | } | |
b90d1146 ILT |
120 | |
121 | /* If we are searching for this file, see if the architecture is | |
122 | compatible with the output file. If it isn't, keep searching. | |
123 | If we can't open the file as an object file, stop the search | |
124 | here. */ | |
125 | ||
126 | if (entry->search_dirs_flag) | |
127 | { | |
128 | bfd *check; | |
129 | ||
130 | if (bfd_check_format (entry->the_bfd, bfd_archive)) | |
131 | check = bfd_openr_next_archived_file (entry->the_bfd, NULL); | |
132 | else | |
133 | check = entry->the_bfd; | |
134 | ||
135 | if (! bfd_check_format (check, bfd_object)) | |
136 | return true; | |
137 | if (bfd_arch_get_compatible (check, output_bfd) == NULL) | |
138 | { | |
139 | einfo (_("%P: skipping incompatible %s when searching for %s"), | |
140 | attempt, entry->local_sym_name); | |
141 | bfd_close (entry->the_bfd); | |
142 | entry->the_bfd = NULL; | |
143 | return false; | |
144 | } | |
145 | } | |
146 | ||
147 | return true; | |
252b5132 RH |
148 | } |
149 | ||
150 | /* Search for and open the file specified by ENTRY. If it is an | |
151 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ | |
152 | ||
153 | static boolean | |
154 | ldfile_open_file_search (arch, entry, lib, suffix) | |
155 | const char *arch; | |
156 | lang_input_statement_type *entry; | |
157 | const char *lib; | |
158 | const char *suffix; | |
159 | { | |
160 | search_dirs_type *search; | |
161 | ||
162 | /* If this is not an archive, try to open it in the current | |
163 | directory first. */ | |
164 | if (! entry->is_archive) | |
165 | { | |
166 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
167 | return true; | |
168 | } | |
169 | ||
170 | for (search = search_head; | |
171 | search != (search_dirs_type *)NULL; | |
172 | search = search->next) | |
173 | { | |
174 | char *string; | |
175 | ||
176 | if (entry->dynamic && ! link_info.relocateable) | |
177 | { | |
178 | if (ldemul_open_dynamic_archive (arch, search, entry)) | |
179 | return true; | |
180 | } | |
181 | ||
182 | string = (char *) xmalloc (strlen (search->name) | |
183 | + strlen (slash) | |
184 | + strlen (lib) | |
185 | + strlen (entry->filename) | |
186 | + strlen (arch) | |
187 | + strlen (suffix) | |
188 | + 1); | |
189 | ||
190 | if (entry->is_archive) | |
191 | sprintf (string, "%s%s%s%s%s%s", search->name, slash, | |
192 | lib, entry->filename, arch, suffix); | |
193 | else if (entry->filename[0] == '/' || entry->filename[0] == '.' | |
194 | #if defined (__MSDOS__) || defined (_WIN32) | |
195 | || entry->filename[0] == '\\' | |
196 | || (isalpha (entry->filename[0]) | |
197 | && entry->filename[1] == ':') | |
198 | #endif | |
199 | ) | |
200 | strcpy (string, entry->filename); | |
201 | else | |
202 | sprintf (string, "%s%s%s", search->name, slash, entry->filename); | |
203 | ||
204 | if (ldfile_try_open_bfd (string, entry)) | |
205 | { | |
b90d1146 ILT |
206 | entry->filename = string; |
207 | return true; | |
252b5132 RH |
208 | } |
209 | ||
210 | free (string); | |
211 | } | |
212 | ||
213 | return false; | |
214 | } | |
215 | ||
216 | /* Open the input file specified by ENTRY. */ | |
217 | ||
218 | void | |
219 | ldfile_open_file (entry) | |
220 | lang_input_statement_type *entry; | |
221 | { | |
222 | if (entry->the_bfd != NULL) | |
223 | return; | |
224 | ||
225 | if (! entry->search_dirs_flag) | |
226 | { | |
227 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
228 | return; | |
229 | if (strcmp (entry->filename, entry->local_sym_name) != 0) | |
230 | einfo (_("%F%P: cannot open %s for %s: %E\n"), | |
231 | entry->filename, entry->local_sym_name); | |
232 | else | |
233 | einfo(_("%F%P: cannot open %s: %E\n"), entry->local_sym_name); | |
234 | } | |
235 | else | |
236 | { | |
237 | search_arch_type *arch; | |
238 | ||
239 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ | |
240 | for (arch = search_arch_head; | |
241 | arch != (search_arch_type *) NULL; | |
242 | arch = arch->next) | |
243 | { | |
244 | if (ldfile_open_file_search (arch->name, entry, "lib", ".a")) | |
245 | return; | |
246 | #ifdef VMS | |
247 | if (ldfile_open_file_search (arch->name, entry, ":lib", ".a")) | |
248 | return; | |
249 | #endif | |
250 | } | |
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"); | |
266 | if (trace_file_tries) | |
267 | { | |
268 | if (result == NULL) | |
269 | info_msg (_("cannot find script file %s\n"), name); | |
270 | else | |
271 | info_msg (_("opened script file %s\n"), name); | |
272 | } | |
273 | ||
274 | if (result != NULL) | |
275 | return result; | |
276 | ||
277 | if (*exten) | |
278 | { | |
279 | sprintf (buff, "%s%s", name, exten); | |
280 | result = fopen (buff, "r"); | |
281 | if (trace_file_tries) | |
282 | { | |
283 | if (result == NULL) | |
284 | info_msg (_("cannot find script file %s\n"), buff); | |
285 | else | |
286 | info_msg (_("opened script file %s\n"), buff); | |
287 | } | |
288 | } | |
289 | ||
290 | return result; | |
291 | } | |
292 | ||
293 | /* Try to open NAME; if that fails, look for it in any directories | |
294 | specified with -L, without and with EXTEND apppended. */ | |
295 | ||
296 | FILE * | |
297 | ldfile_find_command_file (name, extend) | |
298 | const char *name; | |
299 | const char *extend; | |
300 | { | |
301 | search_dirs_type *search; | |
302 | FILE *result; | |
303 | char buffer[1000]; | |
304 | ||
305 | /* First try raw name */ | |
306 | result = try_open(name,""); | |
307 | if (result == (FILE *)NULL) { | |
308 | /* Try now prefixes */ | |
309 | for (search = search_head; | |
310 | search != (search_dirs_type *)NULL; | |
311 | search = search->next) { | |
312 | sprintf(buffer,"%s%s%s", search->name, slash, name); | |
313 | result = try_open(buffer, extend); | |
314 | if (result)break; | |
315 | } | |
316 | } | |
317 | return result; | |
318 | } | |
319 | ||
320 | void | |
321 | ldfile_open_command_file (name) | |
322 | const char *name; | |
323 | { | |
324 | FILE *ldlex_input_stack; | |
325 | ldlex_input_stack = ldfile_find_command_file(name, ""); | |
326 | ||
327 | if (ldlex_input_stack == (FILE *)NULL) { | |
328 | bfd_set_error (bfd_error_system_call); | |
329 | einfo(_("%P%F: cannot open linker script file %s: %E\n"),name); | |
330 | } | |
331 | lex_push_file(ldlex_input_stack, name); | |
332 | ||
333 | ldfile_input_filename = name; | |
334 | lineno = 1; | |
335 | had_script = true; | |
336 | } | |
337 | ||
338 | ||
339 | ||
340 | ||
341 | ||
342 | #ifdef GNU960 | |
343 | static | |
344 | char * | |
345 | gnu960_map_archname( name ) | |
346 | char *name; | |
347 | { | |
348 | struct tabentry { char *cmd_switch; char *arch; }; | |
349 | static struct tabentry arch_tab[] = { | |
350 | "", "", | |
351 | "KA", "ka", | |
352 | "KB", "kb", | |
353 | "KC", "mc", /* Synonym for MC */ | |
354 | "MC", "mc", | |
355 | "CA", "ca", | |
356 | "SA", "ka", /* Functionally equivalent to KA */ | |
357 | "SB", "kb", /* Functionally equivalent to KB */ | |
358 | NULL, "" | |
359 | }; | |
360 | struct tabentry *tp; | |
361 | ||
362 | ||
363 | for ( tp = arch_tab; tp->cmd_switch != NULL; tp++ ){ | |
364 | if ( !strcmp(name,tp->cmd_switch) ){ | |
365 | break; | |
366 | } | |
367 | } | |
368 | ||
369 | if ( tp->cmd_switch == NULL ){ | |
370 | einfo(_("%P%F: unknown architecture: %s\n"),name); | |
371 | } | |
372 | return tp->arch; | |
373 | } | |
374 | ||
375 | ||
376 | ||
377 | void | |
378 | ldfile_add_arch(name) | |
379 | char *name; | |
380 | { | |
381 | search_arch_type *new = | |
382 | (search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type))); | |
383 | ||
384 | ||
385 | if (*name != '\0') { | |
386 | if (ldfile_output_machine_name[0] != '\0') { | |
387 | einfo(_("%P%F: target architecture respecified\n")); | |
388 | return; | |
389 | } | |
390 | ldfile_output_machine_name = name; | |
391 | } | |
392 | ||
393 | new->next = (search_arch_type*)NULL; | |
394 | new->name = gnu960_map_archname( name ); | |
395 | *search_arch_tail_ptr = new; | |
396 | search_arch_tail_ptr = &new->next; | |
397 | ||
398 | } | |
399 | ||
400 | #else /* not GNU960 */ | |
401 | ||
402 | ||
403 | void | |
404 | ldfile_add_arch (in_name) | |
405 | CONST char * in_name; | |
406 | { | |
407 | char *name = buystring(in_name); | |
408 | search_arch_type *new = | |
409 | (search_arch_type *) xmalloc (sizeof (search_arch_type)); | |
410 | ||
411 | ldfile_output_machine_name = in_name; | |
412 | ||
413 | new->name = name; | |
414 | new->next = (search_arch_type*)NULL; | |
415 | while (*name) | |
416 | { | |
417 | if (isupper ((unsigned char) *name)) | |
418 | *name = tolower ((unsigned char) *name); | |
419 | name++; | |
420 | } | |
421 | *search_arch_tail_ptr = new; | |
422 | search_arch_tail_ptr = &new->next; | |
423 | ||
424 | } | |
425 | #endif | |
426 | ||
427 | /* Set the output architecture */ | |
428 | void | |
429 | ldfile_set_output_arch (string) | |
430 | CONST char *string; | |
431 | { | |
432 | const bfd_arch_info_type *arch = bfd_scan_arch(string); | |
433 | ||
434 | if (arch) { | |
435 | ldfile_output_architecture = arch->arch; | |
436 | ldfile_output_machine = arch->mach; | |
437 | ldfile_output_machine_name = arch->printable_name; | |
438 | } | |
439 | else { | |
440 | einfo(_("%P%F: cannot represent machine `%s'\n"), string); | |
441 | } | |
442 | } |