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252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
b34976b6 | 3 | if [ -z "$MACHINE" ]; then |
86af25fe L |
4 | OUTPUT_ARCH=${ARCH} |
5 | else | |
6 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
7 | fi | |
92b93329 | 8 | fragment <<EOF |
252b5132 RH |
9 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
10 | ||
11 | /* SunOS emulation code for ${EMULATION_NAME} | |
aef6203b | 12 | Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
66be1055 AM |
13 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2012 |
14 | Free Software Foundation, Inc. | |
252b5132 RH |
15 | Written by Steve Chamberlain <sac@cygnus.com> |
16 | SunOS shared library support by Ian Lance Taylor <ian@cygnus.com> | |
17 | ||
f96b4a7b NC |
18 | This file is part of the GNU Binutils. |
19 | ||
20 | This program is free software; you can redistribute it and/or modify | |
21 | it under the terms of the GNU General Public License as published by | |
22 | the Free Software Foundation; either version 3 of the License, or | |
23 | (at your option) any later version. | |
24 | ||
25 | This program is distributed in the hope that it will be useful, | |
26 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | GNU General Public License for more details. | |
29 | ||
30 | You should have received a copy of the GNU General Public License | |
31 | along with this program; if not, write to the Free Software | |
32 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
33 | MA 02110-1301, USA. */ | |
252b5132 RH |
34 | |
35 | #define TARGET_IS_${EMULATION_NAME} | |
36 | ||
252b5132 | 37 | #include "sysdep.h" |
3db64b00 | 38 | #include "bfd.h" |
252b5132 RH |
39 | #include "bfdlink.h" |
40 | #include "libiberty.h" | |
3882b010 | 41 | #include "safe-ctype.h" |
252b5132 RH |
42 | |
43 | #include "ld.h" | |
44 | #include "ldmain.h" | |
252b5132 RH |
45 | #include "ldmisc.h" |
46 | #include "ldexp.h" | |
47 | #include "ldlang.h" | |
b71e2778 AM |
48 | #include "ldfile.h" |
49 | #include "ldemul.h" | |
252b5132 RH |
50 | |
51 | #ifdef HAVE_DIRENT_H | |
52 | # include <dirent.h> | |
53 | #else | |
54 | # define dirent direct | |
55 | # ifdef HAVE_SYS_NDIR_H | |
56 | # include <sys/ndir.h> | |
57 | # endif | |
58 | # ifdef HAVE_SYS_DIR_H | |
59 | # include <sys/dir.h> | |
60 | # endif | |
61 | # ifdef HAVE_NDIR_H | |
62 | # include <ndir.h> | |
63 | # endif | |
64 | #endif | |
65 | ||
252b5132 | 66 | static void gld${EMULATION_NAME}_find_so |
0c7a8e5a | 67 | (lang_input_statement_type *); |
252b5132 | 68 | static char *gld${EMULATION_NAME}_search_dir |
0c7a8e5a | 69 | (const char *, const char *, bfd_boolean *); |
252b5132 | 70 | static void gld${EMULATION_NAME}_check_needed |
0c7a8e5a | 71 | (lang_input_statement_type *); |
b34976b6 | 72 | static bfd_boolean gld${EMULATION_NAME}_search_needed |
0c7a8e5a | 73 | (const char *, const char *); |
b34976b6 | 74 | static bfd_boolean gld${EMULATION_NAME}_try_needed |
0c7a8e5a | 75 | (const char *, const char *); |
252b5132 | 76 | static void gld${EMULATION_NAME}_find_assignment |
0c7a8e5a AM |
77 | (lang_statement_union_type *); |
78 | static void gld${EMULATION_NAME}_find_exp_assignment | |
79 | (etree_type *); | |
252b5132 | 80 | static void gld${EMULATION_NAME}_count_need |
0c7a8e5a | 81 | (lang_input_statement_type *); |
252b5132 | 82 | static void gld${EMULATION_NAME}_set_need |
0c7a8e5a | 83 | (lang_input_statement_type *); |
252b5132 RH |
84 | |
85 | static void | |
0c7a8e5a | 86 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 | 87 | { |
5e2f1575 | 88 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
66be1055 | 89 | input_flags.dynamic = TRUE; |
b34976b6 | 90 | config.has_shared = TRUE; |
252b5132 RH |
91 | } |
92 | ||
93 | /* This is called after the command line arguments have been parsed, | |
94 | but before the linker script has been read. If this is a native | |
95 | linker, we add the directories in LD_LIBRARY_PATH to the search | |
96 | list. */ | |
97 | ||
98 | static void | |
0c7a8e5a | 99 | gld${EMULATION_NAME}_set_symbols (void) |
252b5132 RH |
100 | { |
101 | EOF | |
102 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
103 | case " ${EMULATION_LIBPATH} " in |
104 | *" ${EMULATION_NAME} "*) | |
92b93329 | 105 | fragment <<EOF |
252b5132 RH |
106 | const char *env; |
107 | ||
108 | env = (const char *) getenv ("LD_LIBRARY_PATH"); | |
109 | if (env != NULL) | |
110 | { | |
111 | char *l; | |
112 | ||
113 | l = xstrdup (env); | |
114 | while (1) | |
115 | { | |
116 | char *c; | |
117 | ||
118 | c = strchr (l, ':'); | |
119 | if (c != NULL) | |
120 | *c++ = '\0'; | |
121 | if (*l != '\0') | |
b34976b6 | 122 | ldfile_add_library_path (l, FALSE); |
252b5132 RH |
123 | if (c == NULL) |
124 | break; | |
125 | l = c; | |
126 | } | |
127 | } | |
128 | EOF | |
f97f7300 RH |
129 | ;; |
130 | esac | |
252b5132 | 131 | fi |
92b93329 | 132 | fragment <<EOF |
252b5132 RH |
133 | } |
134 | ||
135 | /* Despite the name, we use this routine to search for dynamic | |
136 | libraries. On SunOS this requires a directory search. We need to | |
137 | find the .so file with the highest version number. The user may | |
138 | restrict the major version by saying, e.g., -lc.1. Also, if we | |
139 | find a .so file, we need to look for a the same file after | |
140 | replacing .so with .sa; if it exists, it will be an archive which | |
141 | provide some initializations for data symbols, and we need to | |
142 | search it after including the .so file. */ | |
143 | ||
144 | static void | |
0c7a8e5a | 145 | gld${EMULATION_NAME}_create_output_section_statements (void) |
252b5132 RH |
146 | { |
147 | lang_for_each_input_file (gld${EMULATION_NAME}_find_so); | |
148 | } | |
149 | ||
150 | /* Search the directory for a .so file for each library search. */ | |
151 | ||
152 | static void | |
0c7a8e5a | 153 | gld${EMULATION_NAME}_find_so (lang_input_statement_type *inp) |
252b5132 RH |
154 | { |
155 | search_dirs_type *search; | |
156 | char *found = NULL; | |
157 | char *alc; | |
158 | struct stat st; | |
159 | ||
66be1055 AM |
160 | if (! inp->flags.search_dirs |
161 | || ! inp->flags.maybe_archive | |
162 | || ! inp->flags.dynamic) | |
252b5132 RH |
163 | return; |
164 | ||
0112cd26 | 165 | ASSERT (CONST_STRNEQ (inp->local_sym_name, "-l")); |
252b5132 RH |
166 | |
167 | for (search = search_head; search != NULL; search = search->next) | |
168 | { | |
b34976b6 | 169 | bfd_boolean found_static; |
252b5132 RH |
170 | |
171 | found = gld${EMULATION_NAME}_search_dir (search->name, inp->filename, | |
172 | &found_static); | |
173 | if (found != NULL || found_static) | |
174 | break; | |
175 | } | |
176 | ||
177 | if (found == NULL) | |
178 | { | |
179 | /* We did not find a matching .so file. This isn't an error, | |
180 | since there might still be a matching .a file, which will be | |
181 | found by the usual search. */ | |
182 | return; | |
183 | } | |
184 | ||
185 | /* Replace the filename with the one we have found. */ | |
186 | alc = (char *) xmalloc (strlen (search->name) + strlen (found) + 2); | |
187 | sprintf (alc, "%s/%s", search->name, found); | |
188 | inp->filename = alc; | |
189 | ||
190 | /* Turn off the search_dirs_flag to prevent ldfile_open_file from | |
191 | searching for this file again. */ | |
66be1055 | 192 | inp->flags.search_dirs = FALSE; |
252b5132 RH |
193 | |
194 | free (found); | |
195 | ||
196 | /* Now look for the same file name, but with .sa instead of .so. If | |
197 | found, add it to the list of input files. */ | |
198 | alc = (char *) xmalloc (strlen (inp->filename) + 1); | |
199 | strcpy (alc, inp->filename); | |
200 | strstr (alc + strlen (search->name), ".so")[2] = 'a'; | |
201 | if (stat (alc, &st) != 0) | |
202 | free (alc); | |
203 | else | |
204 | { | |
205 | lang_input_statement_type *sa; | |
206 | ||
207 | /* Add the .sa file to the statement list just before the .so | |
208 | file. This is really a hack. */ | |
209 | sa = ((lang_input_statement_type *) | |
210 | xmalloc (sizeof (lang_input_statement_type))); | |
211 | *sa = *inp; | |
212 | ||
213 | inp->filename = alc; | |
214 | inp->local_sym_name = alc; | |
215 | ||
216 | inp->header.next = (lang_statement_union_type *) sa; | |
217 | inp->next_real_file = (lang_statement_union_type *) sa; | |
218 | } | |
219 | } | |
220 | ||
221 | /* Search a directory for a .so file. */ | |
222 | ||
223 | static char * | |
0c7a8e5a AM |
224 | gld${EMULATION_NAME}_search_dir |
225 | (const char *dirname, const char *filename, bfd_boolean *found_static) | |
252b5132 RH |
226 | { |
227 | int force_maj, force_min; | |
228 | const char *dot; | |
229 | unsigned int len; | |
230 | char *alc; | |
231 | char *found; | |
232 | int max_maj, max_min; | |
233 | DIR *dir; | |
234 | struct dirent *entry; | |
235 | unsigned int dirnamelen; | |
236 | char *full_path; | |
237 | int statval; | |
238 | struct stat st; | |
239 | ||
b34976b6 | 240 | *found_static = FALSE; |
252b5132 RH |
241 | |
242 | force_maj = -1; | |
243 | force_min = -1; | |
244 | dot = strchr (filename, '.'); | |
245 | if (dot == NULL) | |
246 | { | |
247 | len = strlen (filename); | |
248 | alc = NULL; | |
249 | } | |
250 | else | |
251 | { | |
252 | force_maj = atoi (dot + 1); | |
253 | ||
254 | len = dot - filename; | |
255 | alc = (char *) xmalloc (len + 1); | |
256 | strncpy (alc, filename, len); | |
257 | alc[len] = '\0'; | |
258 | filename = alc; | |
259 | ||
260 | dot = strchr (dot + 1, '.'); | |
261 | if (dot != NULL) | |
262 | force_min = atoi (dot + 1); | |
263 | } | |
264 | ||
265 | found = NULL; | |
266 | max_maj = max_min = 0; | |
267 | ||
268 | dir = opendir (dirname); | |
269 | if (dir == NULL) | |
270 | return NULL; | |
271 | dirnamelen = strlen (dirname); | |
b34976b6 | 272 | |
252b5132 RH |
273 | while ((entry = readdir (dir)) != NULL) |
274 | { | |
275 | const char *s; | |
276 | int found_maj, found_min; | |
277 | ||
0112cd26 | 278 | if (! CONST_STRNEQ (entry->d_name, "lib") |
252b5132 RH |
279 | || strncmp (entry->d_name + 3, filename, len) != 0) |
280 | continue; | |
281 | ||
282 | if (dot == NULL | |
283 | && strcmp (entry->d_name + 3 + len, ".a") == 0) | |
284 | { | |
b34976b6 | 285 | *found_static = TRUE; |
252b5132 RH |
286 | continue; |
287 | } | |
288 | ||
289 | /* We accept libfoo.so without a version number, even though the | |
0c7a8e5a AM |
290 | native linker does not. This is more convenient for packages |
291 | which just generate .so files for shared libraries, as on ELF | |
292 | systems. */ | |
0112cd26 | 293 | if (! CONST_STRNEQ (entry->d_name + 3 + len, ".so")) |
252b5132 RH |
294 | continue; |
295 | if (entry->d_name[6 + len] == '\0') | |
296 | ; | |
297 | else if (entry->d_name[6 + len] == '.' | |
3882b010 | 298 | && ISDIGIT (entry->d_name[7 + len])) |
252b5132 RH |
299 | ; |
300 | else | |
301 | continue; | |
302 | ||
303 | for (s = entry->d_name + 6 + len; *s != '\0'; s++) | |
3882b010 | 304 | if (*s != '.' && ! ISDIGIT (*s)) |
252b5132 RH |
305 | break; |
306 | if (*s != '\0') | |
307 | continue; | |
308 | ||
309 | /* We've found a .so file. Work out the major and minor | |
310 | version numbers. */ | |
311 | found_maj = 0; | |
312 | found_min = 0; | |
313 | sscanf (entry->d_name + 3 + len, ".so.%d.%d", | |
314 | &found_maj, &found_min); | |
315 | ||
316 | if ((force_maj != -1 && force_maj != found_maj) | |
317 | || (force_min != -1 && force_min != found_min)) | |
318 | continue; | |
319 | ||
320 | /* Make sure the file really exists (ignore broken symlinks). */ | |
321 | full_path = xmalloc (dirnamelen + 1 + strlen (entry->d_name) + 1); | |
322 | sprintf (full_path, "%s/%s", dirname, entry->d_name); | |
323 | statval = stat (full_path, &st); | |
324 | free (full_path); | |
325 | if (statval != 0) | |
326 | continue; | |
327 | ||
328 | /* We've found a match for the name we are searching for. See | |
329 | if this is the version we should use. If the major and minor | |
330 | versions match, we use the last entry in alphabetical order; | |
331 | I don't know if this is how SunOS distinguishes libc.so.1.8 | |
332 | from libc.so.1.8.1, but it ought to suffice. */ | |
333 | if (found == NULL | |
334 | || (found_maj > max_maj) | |
335 | || (found_maj == max_maj | |
336 | && (found_min > max_min | |
337 | || (found_min == max_min | |
338 | && strcmp (entry->d_name, found) > 0)))) | |
339 | { | |
340 | if (found != NULL) | |
341 | free (found); | |
342 | found = (char *) xmalloc (strlen (entry->d_name) + 1); | |
343 | strcpy (found, entry->d_name); | |
344 | max_maj = found_maj; | |
345 | max_min = found_min; | |
346 | } | |
347 | } | |
348 | ||
349 | closedir (dir); | |
350 | ||
351 | if (alc != NULL) | |
352 | free (alc); | |
353 | ||
354 | return found; | |
355 | } | |
356 | ||
357 | /* These variables are required to pass information back and forth | |
358 | between after_open and check_needed. */ | |
359 | ||
360 | static struct bfd_link_needed_list *global_needed; | |
b34976b6 | 361 | static bfd_boolean global_found; |
252b5132 RH |
362 | |
363 | /* This is called after all the input files have been opened. */ | |
364 | ||
365 | static void | |
0c7a8e5a | 366 | gld${EMULATION_NAME}_after_open (void) |
252b5132 RH |
367 | { |
368 | struct bfd_link_needed_list *needed, *l; | |
369 | ||
5c3049d2 AM |
370 | after_open_default (); |
371 | ||
252b5132 | 372 | /* We only need to worry about this when doing a final link. */ |
1049f94e | 373 | if (link_info.relocatable || link_info.shared) |
252b5132 RH |
374 | return; |
375 | ||
376 | /* Get the list of files which appear in ld_need entries in dynamic | |
377 | objects included in the link. For each such file, we want to | |
378 | track down the corresponding library, and include the symbol | |
379 | table in the link. This is what the runtime dynamic linker will | |
380 | do. Tracking the files down here permits one dynamic object to | |
381 | include another without requiring special action by the person | |
382 | doing the link. Note that the needed list can actually grow | |
383 | while we are stepping through this loop. */ | |
f13a99db | 384 | needed = bfd_sunos_get_needed_list (link_info.output_bfd, &link_info); |
252b5132 RH |
385 | for (l = needed; l != NULL; l = l->next) |
386 | { | |
387 | struct bfd_link_needed_list *ll; | |
388 | const char *lname; | |
389 | search_dirs_type *search; | |
390 | ||
391 | lname = l->name; | |
392 | ||
393 | /* If we've already seen this file, skip it. */ | |
394 | for (ll = needed; ll != l; ll = ll->next) | |
395 | if (strcmp (ll->name, lname) == 0) | |
396 | break; | |
397 | if (ll != l) | |
398 | continue; | |
399 | ||
400 | /* See if this file was included in the link explicitly. */ | |
401 | global_needed = l; | |
b34976b6 | 402 | global_found = FALSE; |
252b5132 RH |
403 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); |
404 | if (global_found) | |
405 | continue; | |
406 | ||
0112cd26 | 407 | if (! CONST_STRNEQ (lname, "-l")) |
252b5132 RH |
408 | { |
409 | bfd *abfd; | |
410 | ||
f13a99db | 411 | abfd = bfd_openr (lname, bfd_get_target (link_info.output_bfd)); |
252b5132 RH |
412 | if (abfd != NULL) |
413 | { | |
414 | if (! bfd_check_format (abfd, bfd_object)) | |
415 | { | |
416 | (void) bfd_close (abfd); | |
417 | abfd = NULL; | |
418 | } | |
419 | } | |
420 | if (abfd != NULL) | |
421 | { | |
422 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
423 | { | |
424 | (void) bfd_close (abfd); | |
425 | abfd = NULL; | |
426 | } | |
427 | } | |
428 | if (abfd != NULL) | |
429 | { | |
430 | /* We've found the needed dynamic object. */ | |
431 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
432 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
433 | } | |
434 | else | |
435 | { | |
436 | einfo ("%P: warning: %s, needed by %B, not found\n", | |
437 | lname, l->by); | |
438 | } | |
439 | ||
440 | continue; | |
441 | } | |
442 | ||
443 | lname += 2; | |
444 | ||
445 | /* We want to search for the file in the same way that the | |
446 | dynamic linker will search. That means that we want to use | |
447 | rpath_link, rpath or -L, then the environment variable | |
448 | LD_LIBRARY_PATH (native only), then (if rpath was used) the | |
449 | linker script LIB_SEARCH_DIRS. */ | |
450 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, | |
451 | lname)) | |
452 | continue; | |
453 | if (command_line.rpath != NULL) | |
454 | { | |
455 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, lname)) | |
456 | continue; | |
457 | } | |
458 | else | |
459 | { | |
460 | for (search = search_head; search != NULL; search = search->next) | |
461 | if (gld${EMULATION_NAME}_try_needed (search->name, lname)) | |
462 | break; | |
463 | if (search != NULL) | |
464 | continue; | |
465 | } | |
466 | EOF | |
467 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
468 | case " ${EMULATION_LIBPATH} " in |
469 | *" ${EMULATION_NAME} "*) | |
92b93329 | 470 | fragment <<EOF |
252b5132 RH |
471 | { |
472 | const char *lib_path; | |
473 | ||
474 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); | |
475 | if (gld${EMULATION_NAME}_search_needed (lib_path, lname)) | |
476 | continue; | |
477 | } | |
478 | EOF | |
f97f7300 RH |
479 | ;; |
480 | esac | |
252b5132 | 481 | fi |
92b93329 | 482 | fragment <<EOF |
252b5132 RH |
483 | if (command_line.rpath != NULL) |
484 | { | |
485 | for (search = search_head; search != NULL; search = search->next) | |
486 | { | |
487 | if (search->cmdline) | |
488 | continue; | |
489 | if (gld${EMULATION_NAME}_try_needed (search->name, lname)) | |
490 | break; | |
491 | } | |
492 | if (search != NULL) | |
493 | continue; | |
494 | } | |
495 | ||
496 | einfo ("%P: warning: %s, needed by %B, not found\n", | |
497 | l->name, l->by); | |
498 | } | |
499 | } | |
500 | ||
501 | /* Search for a needed file in a path. */ | |
502 | ||
b34976b6 | 503 | static bfd_boolean |
0c7a8e5a | 504 | gld${EMULATION_NAME}_search_needed (const char *path, const char *name) |
252b5132 RH |
505 | { |
506 | const char *s; | |
507 | ||
508 | if (path == NULL || *path == '\0') | |
b34976b6 | 509 | return FALSE; |
252b5132 RH |
510 | while (1) |
511 | { | |
512 | const char *dir; | |
513 | char *dircopy; | |
514 | ||
515 | s = strchr (path, ':'); | |
516 | if (s == NULL) | |
517 | { | |
518 | dircopy = NULL; | |
519 | dir = path; | |
520 | } | |
521 | else | |
522 | { | |
523 | dircopy = (char *) xmalloc (s - path + 1); | |
524 | memcpy (dircopy, path, s - path); | |
525 | dircopy[s - path] = '\0'; | |
526 | dir = dircopy; | |
527 | } | |
528 | ||
529 | if (gld${EMULATION_NAME}_try_needed (dir, name)) | |
b34976b6 | 530 | return TRUE; |
252b5132 RH |
531 | |
532 | if (dircopy != NULL) | |
533 | free (dircopy); | |
534 | ||
535 | if (s == NULL) | |
536 | break; | |
537 | path = s + 1; | |
538 | } | |
539 | ||
b34976b6 | 540 | return FALSE; |
252b5132 RH |
541 | } |
542 | ||
543 | /* This function is called for each possible directory for a needed | |
544 | dynamic object. */ | |
545 | ||
b34976b6 | 546 | static bfd_boolean |
0c7a8e5a | 547 | gld${EMULATION_NAME}_try_needed (const char *dir, const char *name) |
252b5132 RH |
548 | { |
549 | char *file; | |
550 | char *alc; | |
b34976b6 | 551 | bfd_boolean ignore; |
252b5132 RH |
552 | bfd *abfd; |
553 | ||
554 | file = gld${EMULATION_NAME}_search_dir (dir, name, &ignore); | |
555 | if (file == NULL) | |
b34976b6 | 556 | return FALSE; |
252b5132 RH |
557 | |
558 | alc = (char *) xmalloc (strlen (dir) + strlen (file) + 2); | |
559 | sprintf (alc, "%s/%s", dir, file); | |
560 | free (file); | |
f13a99db | 561 | abfd = bfd_openr (alc, bfd_get_target (link_info.output_bfd)); |
252b5132 | 562 | if (abfd == NULL) |
b34976b6 | 563 | return FALSE; |
252b5132 RH |
564 | if (! bfd_check_format (abfd, bfd_object)) |
565 | { | |
566 | (void) bfd_close (abfd); | |
b34976b6 | 567 | return FALSE; |
252b5132 RH |
568 | } |
569 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
570 | { | |
571 | (void) bfd_close (abfd); | |
b34976b6 | 572 | return FALSE; |
252b5132 RH |
573 | } |
574 | ||
575 | /* We've found the needed dynamic object. */ | |
576 | ||
577 | /* Add this file into the symbol table. */ | |
578 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
579 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
580 | ||
b34976b6 | 581 | return TRUE; |
252b5132 RH |
582 | } |
583 | ||
584 | /* See if we have already included a needed object in the link. This | |
585 | does not have to be precise, as it does no harm to include a | |
586 | dynamic object more than once. */ | |
587 | ||
588 | static void | |
0c7a8e5a | 589 | gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s) |
252b5132 RH |
590 | { |
591 | if (s->filename == NULL) | |
592 | return; | |
0112cd26 | 593 | if (! CONST_STRNEQ (global_needed->name, "-l")) |
252b5132 RH |
594 | { |
595 | if (strcmp (s->filename, global_needed->name) == 0) | |
b34976b6 | 596 | global_found = TRUE; |
252b5132 RH |
597 | } |
598 | else | |
599 | { | |
600 | const char *sname, *lname; | |
601 | const char *sdot, *ldot; | |
602 | int lmaj, lmin, smaj, smin; | |
603 | ||
604 | lname = global_needed->name + 2; | |
605 | ||
606 | sname = strrchr (s->filename, '/'); | |
607 | if (sname == NULL) | |
608 | sname = s->filename; | |
609 | else | |
610 | ++sname; | |
611 | ||
0112cd26 | 612 | if (! CONST_STRNEQ (sname, "lib")) |
252b5132 RH |
613 | return; |
614 | sname += 3; | |
615 | ||
616 | ldot = strchr (lname, '.'); | |
617 | if (ldot == NULL) | |
618 | ldot = lname + strlen (lname); | |
619 | ||
620 | sdot = strstr (sname, ".so."); | |
621 | if (sdot == NULL) | |
622 | return; | |
623 | ||
624 | if (sdot - sname != ldot - lname | |
625 | || strncmp (lname, sname, sdot - sname) != 0) | |
626 | return; | |
627 | ||
628 | lmaj = lmin = -1; | |
629 | sscanf (ldot, ".%d.%d", &lmaj, &lmin); | |
630 | smaj = smin = -1; | |
631 | sscanf (sdot, ".so.%d.%d", &smaj, &smin); | |
632 | if ((smaj != lmaj && smaj != -1 && lmaj != -1) | |
633 | || (smin != lmin && smin != -1 && lmin != -1)) | |
634 | return; | |
635 | ||
b34976b6 | 636 | global_found = TRUE; |
252b5132 RH |
637 | } |
638 | } | |
639 | ||
640 | /* We need to use static variables to pass information around the call | |
641 | to lang_for_each_statement. Ick. */ | |
642 | ||
643 | static const char *find_assign; | |
b34976b6 | 644 | static bfd_boolean found_assign; |
252b5132 RH |
645 | |
646 | /* We need to use static variables to pass information around the call | |
647 | to lang_for_each_input_file. Ick. */ | |
648 | ||
649 | static bfd_size_type need_size; | |
650 | static bfd_size_type need_entries; | |
651 | static bfd_byte *need_contents; | |
652 | static bfd_byte *need_pinfo; | |
653 | static bfd_byte *need_pnames; | |
654 | ||
655 | /* The size of one entry in the .need section, not including the file | |
656 | name. */ | |
657 | ||
658 | #define NEED_ENTRY_SIZE (16) | |
659 | ||
660 | /* This is called after the sections have been attached to output | |
661 | sections, but before any sizes or addresses have been set. */ | |
662 | ||
663 | static void | |
0c7a8e5a | 664 | gld${EMULATION_NAME}_before_allocation (void) |
252b5132 RH |
665 | { |
666 | struct bfd_link_hash_entry *hdyn = NULL; | |
667 | asection *sneed; | |
668 | asection *srules; | |
669 | asection *sdyn; | |
670 | ||
671 | /* The SunOS native linker creates a shared library whenever there | |
672 | are any undefined symbols in a link, unless -e is used. This is | |
673 | pretty weird, but we are compatible. */ | |
1049f94e | 674 | if (! link_info.shared && ! link_info.relocatable && ! entry_from_cmdline) |
252b5132 RH |
675 | { |
676 | struct bfd_link_hash_entry *h; | |
b34976b6 | 677 | |
f6e332e6 | 678 | for (h = link_info.hash->undefs; h != NULL; h = h->u.undef.next) |
252b5132 RH |
679 | { |
680 | if (h->type == bfd_link_hash_undefined | |
681 | && h->u.undef.abfd != NULL | |
682 | && (h->u.undef.abfd->flags & DYNAMIC) == 0 | |
683 | && strcmp (h->root.string, "__DYNAMIC") != 0 | |
684 | && strcmp (h->root.string, "__GLOBAL_OFFSET_TABLE_") != 0) | |
685 | { | |
686 | find_assign = h->root.string; | |
b34976b6 | 687 | found_assign = FALSE; |
252b5132 RH |
688 | lang_for_each_statement (gld${EMULATION_NAME}_find_assignment); |
689 | if (! found_assign) | |
690 | { | |
b34976b6 | 691 | link_info.shared = TRUE; |
252b5132 RH |
692 | break; |
693 | } | |
694 | } | |
695 | } | |
696 | } | |
697 | ||
698 | if (link_info.shared) | |
699 | { | |
700 | lang_output_section_statement_type *os; | |
701 | ||
702 | /* Set the .text section to start at 0x20, not 0x2020. FIXME: | |
0c7a8e5a | 703 | This is too magical. */ |
25d65034 | 704 | os = lang_output_section_statement_lookup (".text", 0, TRUE); |
252b5132 RH |
705 | if (os->addr_tree == NULL) |
706 | os->addr_tree = exp_intop (0x20); | |
707 | } | |
708 | ||
709 | /* We need to create a __DYNAMIC symbol. We don't do this in the | |
710 | linker script because we want to set the value to the start of | |
711 | the dynamic section if there is one, or to zero if there isn't | |
712 | one. We need to create the symbol before calling | |
713 | size_dynamic_sections, although we can't set the value until | |
714 | afterward. */ | |
1049f94e | 715 | if (! link_info.relocatable) |
252b5132 | 716 | { |
b34976b6 AM |
717 | hdyn = bfd_link_hash_lookup (link_info.hash, "__DYNAMIC", TRUE, FALSE, |
718 | FALSE); | |
252b5132 RH |
719 | if (hdyn == NULL) |
720 | einfo ("%P%F: bfd_link_hash_lookup: %E\n"); | |
f13a99db | 721 | if (! bfd_sunos_record_link_assignment (link_info.output_bfd, &link_info, |
252b5132 RH |
722 | "__DYNAMIC")) |
723 | einfo ("%P%F: failed to record assignment to __DYNAMIC: %E\n"); | |
724 | } | |
725 | ||
726 | /* If we are going to make any variable assignments, we need to let | |
727 | the backend linker know about them in case the variables are | |
728 | referred to by dynamic objects. */ | |
729 | lang_for_each_statement (gld${EMULATION_NAME}_find_assignment); | |
730 | ||
731 | /* Let the backend linker work out the sizes of any sections | |
732 | required by dynamic linking. */ | |
f13a99db AM |
733 | if (! bfd_sunos_size_dynamic_sections (link_info.output_bfd, &link_info, |
734 | &sdyn, &sneed, &srules)) | |
252b5132 RH |
735 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); |
736 | ||
737 | if (sneed != NULL) | |
738 | { | |
739 | /* Set up the .need section. See the description of the ld_need | |
740 | field in include/aout/sun4.h. */ | |
741 | ||
742 | need_entries = 0; | |
743 | need_size = 0; | |
744 | ||
745 | lang_for_each_input_file (gld${EMULATION_NAME}_count_need); | |
746 | ||
747 | /* We should only have a .need section if we have at least one | |
748 | dynamic object. */ | |
749 | ASSERT (need_entries != 0); | |
750 | ||
eea6121a | 751 | sneed->size = need_size; |
252b5132 RH |
752 | sneed->contents = (bfd_byte *) xmalloc (need_size); |
753 | ||
754 | need_contents = sneed->contents; | |
755 | need_pinfo = sneed->contents; | |
756 | need_pnames = sneed->contents + need_entries * 16; | |
757 | ||
758 | lang_for_each_input_file (gld${EMULATION_NAME}_set_need); | |
759 | ||
760 | ASSERT ((bfd_size_type) (need_pnames - sneed->contents) == need_size); | |
761 | } | |
762 | ||
763 | if (srules != NULL) | |
764 | { | |
765 | /* Set up the .rules section. This is just a PATH like string | |
766 | of the -L arguments given on the command line. We permit the | |
767 | user to specify the directories using the -rpath command line | |
768 | option. */ | |
769 | if (command_line.rpath) | |
770 | { | |
eea6121a | 771 | srules->size = strlen (command_line.rpath); |
252b5132 RH |
772 | srules->contents = (bfd_byte *) command_line.rpath; |
773 | } | |
774 | else | |
775 | { | |
776 | unsigned int size; | |
777 | search_dirs_type *search; | |
778 | ||
779 | size = 0; | |
780 | for (search = search_head; search != NULL; search = search->next) | |
781 | if (search->cmdline) | |
782 | size += strlen (search->name) + 1; | |
eea6121a | 783 | srules->size = size; |
252b5132 RH |
784 | if (size > 0) |
785 | { | |
786 | char *p; | |
787 | ||
788 | srules->contents = (bfd_byte *) xmalloc (size); | |
789 | p = (char *) srules->contents; | |
790 | *p = '\0'; | |
791 | for (search = search_head; search != NULL; search = search->next) | |
792 | { | |
793 | if (search->cmdline) | |
794 | { | |
795 | if (p != (char *) srules->contents) | |
796 | *p++ = ':'; | |
797 | strcpy (p, search->name); | |
798 | p += strlen (p); | |
799 | } | |
800 | } | |
801 | } | |
802 | } | |
803 | } | |
804 | ||
805 | /* We must assign a value to __DYNAMIC. It should be zero if we are | |
806 | not doing a dynamic link, or the start of the .dynamic section if | |
807 | we are doing one. */ | |
1049f94e | 808 | if (! link_info.relocatable) |
252b5132 RH |
809 | { |
810 | hdyn->type = bfd_link_hash_defined; | |
811 | hdyn->u.def.value = 0; | |
812 | if (sdyn != NULL) | |
813 | hdyn->u.def.section = sdyn; | |
814 | else | |
815 | hdyn->u.def.section = bfd_abs_section_ptr; | |
816 | } | |
1e035701 AM |
817 | |
818 | before_allocation_default (); | |
252b5132 RH |
819 | } |
820 | ||
821 | /* This is called by the before_allocation routine via | |
822 | lang_for_each_statement. It does one of two things: if the | |
823 | variable find_assign is set, it sets found_assign if it finds an | |
824 | assignment to that variable; otherwise it tells the backend linker | |
825 | about all assignment statements, in case they are assignments to | |
826 | symbols which are referred to by dynamic objects. */ | |
827 | ||
828 | static void | |
0c7a8e5a | 829 | gld${EMULATION_NAME}_find_assignment (lang_statement_union_type *s) |
252b5132 RH |
830 | { |
831 | if (s->header.type == lang_assignment_statement_enum | |
832 | && (find_assign == NULL || ! found_assign)) | |
833 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
834 | } | |
835 | ||
836 | /* Look through an expression for an assignment statement. */ | |
837 | ||
838 | static void | |
0c7a8e5a | 839 | gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp) |
252b5132 RH |
840 | { |
841 | switch (exp->type.node_class) | |
842 | { | |
843 | case etree_assign: | |
844 | if (find_assign != NULL) | |
845 | { | |
846 | if (strcmp (find_assign, exp->assign.dst) == 0) | |
b34976b6 | 847 | found_assign = TRUE; |
252b5132 RH |
848 | return; |
849 | } | |
850 | ||
851 | if (strcmp (exp->assign.dst, ".") != 0) | |
852 | { | |
f13a99db AM |
853 | if (! bfd_sunos_record_link_assignment (link_info.output_bfd, |
854 | &link_info, | |
252b5132 RH |
855 | exp->assign.dst)) |
856 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
857 | exp->assign.dst); | |
858 | } | |
859 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
860 | break; | |
861 | ||
862 | case etree_binary: | |
863 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
864 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
865 | break; | |
866 | ||
867 | case etree_trinary: | |
868 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
869 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
870 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
871 | break; | |
872 | ||
873 | case etree_unary: | |
874 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
875 | break; | |
876 | ||
877 | default: | |
878 | break; | |
879 | } | |
880 | } | |
881 | ||
882 | /* Work out the size of the .need section, and the number of entries. | |
883 | The backend will set the ld_need field of the dynamic linking | |
884 | information to point to the .need section. See include/aout/sun4.h | |
885 | for more information. */ | |
886 | ||
887 | static void | |
0c7a8e5a | 888 | gld${EMULATION_NAME}_count_need (lang_input_statement_type *inp) |
252b5132 RH |
889 | { |
890 | if (inp->the_bfd != NULL | |
891 | && (inp->the_bfd->flags & DYNAMIC) != 0) | |
892 | { | |
893 | ++need_entries; | |
894 | need_size += NEED_ENTRY_SIZE; | |
66be1055 | 895 | if (! inp->flags.maybe_archive) |
252b5132 RH |
896 | need_size += strlen (inp->filename) + 1; |
897 | else | |
898 | { | |
899 | ASSERT (inp->local_sym_name[0] == '-' | |
900 | && inp->local_sym_name[1] == 'l'); | |
901 | need_size += strlen (inp->local_sym_name + 2) + 1; | |
902 | } | |
903 | } | |
904 | } | |
905 | ||
906 | /* Fill in the contents of the .need section. */ | |
907 | ||
908 | static void | |
0c7a8e5a | 909 | gld${EMULATION_NAME}_set_need (lang_input_statement_type *inp) |
252b5132 RH |
910 | { |
911 | if (inp->the_bfd != NULL | |
912 | && (inp->the_bfd->flags & DYNAMIC) != 0) | |
913 | { | |
914 | bfd_size_type c; | |
915 | ||
916 | /* To really fill in the .need section contents, we need to know | |
917 | the final file position of the section, but we don't. | |
918 | Instead, we use offsets, and rely on the BFD backend to | |
919 | finish the section up correctly. FIXME: Talk about lack of | |
920 | referential locality. */ | |
f13a99db AM |
921 | bfd_put_32 (link_info.output_bfd, need_pnames - need_contents, |
922 | need_pinfo); | |
66be1055 | 923 | if (! inp->flags.maybe_archive) |
252b5132 | 924 | { |
f13a99db AM |
925 | bfd_put_32 (link_info.output_bfd, (bfd_vma) 0, need_pinfo + 4); |
926 | bfd_put_16 (link_info.output_bfd, (bfd_vma) 0, need_pinfo + 8); | |
927 | bfd_put_16 (link_info.output_bfd, (bfd_vma) 0, need_pinfo + 10); | |
47639182 | 928 | strcpy ((char *) need_pnames, inp->filename); |
252b5132 RH |
929 | } |
930 | else | |
931 | { | |
932 | char *verstr; | |
933 | int maj, min; | |
934 | ||
f13a99db AM |
935 | bfd_put_32 (link_info.output_bfd, (bfd_vma) 0x80000000, |
936 | need_pinfo + 4); | |
252b5132 RH |
937 | maj = 0; |
938 | min = 0; | |
939 | verstr = strstr (inp->filename, ".so."); | |
940 | if (verstr != NULL) | |
941 | sscanf (verstr, ".so.%d.%d", &maj, &min); | |
f13a99db AM |
942 | bfd_put_16 (link_info.output_bfd, (bfd_vma) maj, need_pinfo + 8); |
943 | bfd_put_16 (link_info.output_bfd, (bfd_vma) min, need_pinfo + 10); | |
47639182 | 944 | strcpy ((char *) need_pnames, inp->local_sym_name + 2); |
252b5132 RH |
945 | } |
946 | ||
947 | c = (need_pinfo - need_contents) / NEED_ENTRY_SIZE; | |
948 | if (c + 1 >= need_entries) | |
f13a99db | 949 | bfd_put_32 (link_info.output_bfd, (bfd_vma) 0, need_pinfo + 12); |
252b5132 | 950 | else |
f13a99db | 951 | bfd_put_32 (link_info.output_bfd, (bfd_vma) (c + 1) * NEED_ENTRY_SIZE, |
252b5132 RH |
952 | need_pinfo + 12); |
953 | ||
954 | need_pinfo += NEED_ENTRY_SIZE; | |
47639182 | 955 | need_pnames += strlen ((char *) need_pnames) + 1; |
252b5132 RH |
956 | } |
957 | } | |
958 | ||
959 | static char * | |
0c7a8e5a | 960 | gld${EMULATION_NAME}_get_script (int *isfile) |
252b5132 RH |
961 | EOF |
962 | ||
963 | if test -n "$COMPILE_IN" | |
964 | then | |
965 | # Scripts compiled in. | |
966 | ||
967 | # sed commands to quote an ld script as a C string. | |
597e2591 | 968 | sc="-f stringify.sed" |
252b5132 | 969 | |
92b93329 | 970 | fragment <<EOF |
b34976b6 | 971 | { |
252b5132 RH |
972 | *isfile = 0; |
973 | ||
1049f94e | 974 | if (link_info.relocatable && config.build_constructors) |
597e2591 | 975 | return |
252b5132 | 976 | EOF |
597e2591 | 977 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
1049f94e | 978 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
597e2591 ILT |
979 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
980 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
981 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
982 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
983 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
984 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
985 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
986 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
987 | |
988 | else | |
989 | # Scripts read from the filesystem. | |
990 | ||
92b93329 | 991 | fragment <<EOF |
b34976b6 | 992 | { |
252b5132 RH |
993 | *isfile = 1; |
994 | ||
1049f94e | 995 | if (link_info.relocatable && config.build_constructors) |
252b5132 | 996 | return "ldscripts/${EMULATION_NAME}.xu"; |
1049f94e | 997 | else if (link_info.relocatable) |
252b5132 RH |
998 | return "ldscripts/${EMULATION_NAME}.xr"; |
999 | else if (!config.text_read_only) | |
1000 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1001 | else if (!config.magic_demand_paged) | |
1002 | return "ldscripts/${EMULATION_NAME}.xn"; | |
1003 | else | |
1004 | return "ldscripts/${EMULATION_NAME}.x"; | |
1005 | } | |
1006 | EOF | |
1007 | ||
1008 | fi | |
1009 | ||
92b93329 | 1010 | fragment <<EOF |
252b5132 | 1011 | |
b34976b6 | 1012 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 RH |
1013 | { |
1014 | gld${EMULATION_NAME}_before_parse, | |
1015 | syslib_default, | |
1016 | hll_default, | |
1017 | after_parse_default, | |
1018 | gld${EMULATION_NAME}_after_open, | |
1019 | after_allocation_default, | |
1020 | set_output_arch_default, | |
1021 | ldemul_default_target, | |
1022 | gld${EMULATION_NAME}_before_allocation, | |
1023 | gld${EMULATION_NAME}_get_script, | |
1024 | "${EMULATION_NAME}", | |
1025 | "${OUTPUT_FORMAT}", | |
1e035701 | 1026 | finish_default, |
252b5132 | 1027 | gld${EMULATION_NAME}_create_output_section_statements, |
e1c47aa4 AM |
1028 | NULL, /* open dynamic archive */ |
1029 | NULL, /* place orphan */ | |
1030 | gld${EMULATION_NAME}_set_symbols, | |
1031 | NULL, /* parse args */ | |
3bcf5557 AM |
1032 | NULL, /* add_options */ |
1033 | NULL, /* handle_option */ | |
e1c47aa4 AM |
1034 | NULL, /* unrecognized file */ |
1035 | NULL, /* list options */ | |
40d109bf | 1036 | NULL, /* recognized file */ |
fac1652d AM |
1037 | NULL, /* find_potential_libraries */ |
1038 | NULL /* new_vers_pattern */ | |
252b5132 RH |
1039 | }; |
1040 | EOF |