Commit | Line | Data |
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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 | |
252b5132 RH |
8 | cat >e${EMULATION_NAME}.c <<EOF |
9 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
10 | ||
11 | /* SunOS emulation code for ${EMULATION_NAME} | |
3bcf5557 | 12 | Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003 |
252b5132 RH |
13 | Free Software Foundation, Inc. |
14 | Written by Steve Chamberlain <sac@cygnus.com> | |
15 | SunOS shared library support by Ian Lance Taylor <ian@cygnus.com> | |
16 | ||
17 | This file is part of GLD, the Gnu Linker. | |
18 | ||
19 | This program is free software; you can redistribute it and/or modify | |
20 | it under the terms of the GNU General Public License as published by | |
21 | the Free Software Foundation; either version 2 of the License, or | |
22 | (at your option) any later version. | |
23 | ||
24 | This program is distributed in the hope that it will be useful, | |
25 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | GNU General Public License for more details. | |
28 | ||
29 | You should have received a copy of the GNU General Public License | |
30 | along with this program; if not, write to the Free Software | |
31 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
32 | ||
33 | #define TARGET_IS_${EMULATION_NAME} | |
34 | ||
252b5132 RH |
35 | #include "bfd.h" |
36 | #include "sysdep.h" | |
37 | #include "bfdlink.h" | |
38 | #include "libiberty.h" | |
3882b010 | 39 | #include "safe-ctype.h" |
252b5132 RH |
40 | |
41 | #include "ld.h" | |
42 | #include "ldmain.h" | |
252b5132 RH |
43 | #include "ldmisc.h" |
44 | #include "ldexp.h" | |
45 | #include "ldlang.h" | |
b71e2778 AM |
46 | #include "ldfile.h" |
47 | #include "ldemul.h" | |
252b5132 RH |
48 | |
49 | #ifdef HAVE_DIRENT_H | |
50 | # include <dirent.h> | |
51 | #else | |
52 | # define dirent direct | |
53 | # ifdef HAVE_SYS_NDIR_H | |
54 | # include <sys/ndir.h> | |
55 | # endif | |
56 | # ifdef HAVE_SYS_DIR_H | |
57 | # include <sys/dir.h> | |
58 | # endif | |
59 | # ifdef HAVE_NDIR_H | |
60 | # include <ndir.h> | |
61 | # endif | |
62 | #endif | |
63 | ||
64 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
65 | static void gld${EMULATION_NAME}_set_symbols PARAMS ((void)); | |
66 | static void gld${EMULATION_NAME}_create_output_section_statements | |
67 | PARAMS ((void)); | |
68 | static void gld${EMULATION_NAME}_find_so | |
69 | PARAMS ((lang_input_statement_type *)); | |
70 | static char *gld${EMULATION_NAME}_search_dir | |
b34976b6 | 71 | PARAMS ((const char *, const char *, bfd_boolean *)); |
252b5132 RH |
72 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); |
73 | static void gld${EMULATION_NAME}_check_needed | |
74 | PARAMS ((lang_input_statement_type *)); | |
b34976b6 | 75 | static bfd_boolean gld${EMULATION_NAME}_search_needed |
252b5132 | 76 | PARAMS ((const char *, const char *)); |
b34976b6 | 77 | static bfd_boolean gld${EMULATION_NAME}_try_needed |
252b5132 RH |
78 | PARAMS ((const char *, const char *)); |
79 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
80 | static void gld${EMULATION_NAME}_find_assignment | |
81 | PARAMS ((lang_statement_union_type *)); | |
82 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
83 | static void gld${EMULATION_NAME}_count_need | |
84 | PARAMS ((lang_input_statement_type *)); | |
85 | static void gld${EMULATION_NAME}_set_need | |
86 | PARAMS ((lang_input_statement_type *)); | |
87 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
88 | ||
89 | static void | |
90 | gld${EMULATION_NAME}_before_parse() | |
91 | { | |
86af25fe L |
92 | const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}"); |
93 | if (arch) | |
94 | { | |
95 | ldfile_output_architecture = arch->arch; | |
96 | ldfile_output_machine = arch->mach; | |
97 | ldfile_output_machine_name = arch->printable_name; | |
98 | } | |
99 | else | |
100 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
b34976b6 AM |
101 | config.dynamic_link = TRUE; |
102 | config.has_shared = TRUE; | |
252b5132 RH |
103 | } |
104 | ||
105 | /* This is called after the command line arguments have been parsed, | |
106 | but before the linker script has been read. If this is a native | |
107 | linker, we add the directories in LD_LIBRARY_PATH to the search | |
108 | list. */ | |
109 | ||
110 | static void | |
111 | gld${EMULATION_NAME}_set_symbols () | |
112 | { | |
113 | EOF | |
114 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
115 | case " ${EMULATION_LIBPATH} " in |
116 | *" ${EMULATION_NAME} "*) | |
252b5132 RH |
117 | cat >>e${EMULATION_NAME}.c <<EOF |
118 | const char *env; | |
119 | ||
120 | env = (const char *) getenv ("LD_LIBRARY_PATH"); | |
121 | if (env != NULL) | |
122 | { | |
123 | char *l; | |
124 | ||
125 | l = xstrdup (env); | |
126 | while (1) | |
127 | { | |
128 | char *c; | |
129 | ||
130 | c = strchr (l, ':'); | |
131 | if (c != NULL) | |
132 | *c++ = '\0'; | |
133 | if (*l != '\0') | |
b34976b6 | 134 | ldfile_add_library_path (l, FALSE); |
252b5132 RH |
135 | if (c == NULL) |
136 | break; | |
137 | l = c; | |
138 | } | |
139 | } | |
140 | EOF | |
f97f7300 RH |
141 | ;; |
142 | esac | |
252b5132 RH |
143 | fi |
144 | cat >>e${EMULATION_NAME}.c <<EOF | |
145 | } | |
146 | ||
147 | /* Despite the name, we use this routine to search for dynamic | |
148 | libraries. On SunOS this requires a directory search. We need to | |
149 | find the .so file with the highest version number. The user may | |
150 | restrict the major version by saying, e.g., -lc.1. Also, if we | |
151 | find a .so file, we need to look for a the same file after | |
152 | replacing .so with .sa; if it exists, it will be an archive which | |
153 | provide some initializations for data symbols, and we need to | |
154 | search it after including the .so file. */ | |
155 | ||
156 | static void | |
157 | gld${EMULATION_NAME}_create_output_section_statements () | |
158 | { | |
159 | lang_for_each_input_file (gld${EMULATION_NAME}_find_so); | |
160 | } | |
161 | ||
162 | /* Search the directory for a .so file for each library search. */ | |
163 | ||
164 | static void | |
165 | gld${EMULATION_NAME}_find_so (inp) | |
166 | lang_input_statement_type *inp; | |
167 | { | |
168 | search_dirs_type *search; | |
169 | char *found = NULL; | |
170 | char *alc; | |
171 | struct stat st; | |
172 | ||
173 | if (! inp->search_dirs_flag | |
174 | || ! inp->is_archive | |
175 | || ! inp->dynamic) | |
176 | return; | |
177 | ||
178 | ASSERT (strncmp (inp->local_sym_name, "-l", 2) == 0); | |
179 | ||
180 | for (search = search_head; search != NULL; search = search->next) | |
181 | { | |
b34976b6 | 182 | bfd_boolean found_static; |
252b5132 RH |
183 | |
184 | found = gld${EMULATION_NAME}_search_dir (search->name, inp->filename, | |
185 | &found_static); | |
186 | if (found != NULL || found_static) | |
187 | break; | |
188 | } | |
189 | ||
190 | if (found == NULL) | |
191 | { | |
192 | /* We did not find a matching .so file. This isn't an error, | |
193 | since there might still be a matching .a file, which will be | |
194 | found by the usual search. */ | |
195 | return; | |
196 | } | |
197 | ||
198 | /* Replace the filename with the one we have found. */ | |
199 | alc = (char *) xmalloc (strlen (search->name) + strlen (found) + 2); | |
200 | sprintf (alc, "%s/%s", search->name, found); | |
201 | inp->filename = alc; | |
202 | ||
203 | /* Turn off the search_dirs_flag to prevent ldfile_open_file from | |
204 | searching for this file again. */ | |
b34976b6 | 205 | inp->search_dirs_flag = FALSE; |
252b5132 RH |
206 | |
207 | free (found); | |
208 | ||
209 | /* Now look for the same file name, but with .sa instead of .so. If | |
210 | found, add it to the list of input files. */ | |
211 | alc = (char *) xmalloc (strlen (inp->filename) + 1); | |
212 | strcpy (alc, inp->filename); | |
213 | strstr (alc + strlen (search->name), ".so")[2] = 'a'; | |
214 | if (stat (alc, &st) != 0) | |
215 | free (alc); | |
216 | else | |
217 | { | |
218 | lang_input_statement_type *sa; | |
219 | ||
220 | /* Add the .sa file to the statement list just before the .so | |
221 | file. This is really a hack. */ | |
222 | sa = ((lang_input_statement_type *) | |
223 | xmalloc (sizeof (lang_input_statement_type))); | |
224 | *sa = *inp; | |
225 | ||
226 | inp->filename = alc; | |
227 | inp->local_sym_name = alc; | |
228 | ||
229 | inp->header.next = (lang_statement_union_type *) sa; | |
230 | inp->next_real_file = (lang_statement_union_type *) sa; | |
231 | } | |
232 | } | |
233 | ||
234 | /* Search a directory for a .so file. */ | |
235 | ||
236 | static char * | |
237 | gld${EMULATION_NAME}_search_dir (dirname, filename, found_static) | |
238 | const char *dirname; | |
239 | const char *filename; | |
b34976b6 | 240 | bfd_boolean *found_static; |
252b5132 RH |
241 | { |
242 | int force_maj, force_min; | |
243 | const char *dot; | |
244 | unsigned int len; | |
245 | char *alc; | |
246 | char *found; | |
247 | int max_maj, max_min; | |
248 | DIR *dir; | |
249 | struct dirent *entry; | |
250 | unsigned int dirnamelen; | |
251 | char *full_path; | |
252 | int statval; | |
253 | struct stat st; | |
254 | ||
b34976b6 | 255 | *found_static = FALSE; |
252b5132 RH |
256 | |
257 | force_maj = -1; | |
258 | force_min = -1; | |
259 | dot = strchr (filename, '.'); | |
260 | if (dot == NULL) | |
261 | { | |
262 | len = strlen (filename); | |
263 | alc = NULL; | |
264 | } | |
265 | else | |
266 | { | |
267 | force_maj = atoi (dot + 1); | |
268 | ||
269 | len = dot - filename; | |
270 | alc = (char *) xmalloc (len + 1); | |
271 | strncpy (alc, filename, len); | |
272 | alc[len] = '\0'; | |
273 | filename = alc; | |
274 | ||
275 | dot = strchr (dot + 1, '.'); | |
276 | if (dot != NULL) | |
277 | force_min = atoi (dot + 1); | |
278 | } | |
279 | ||
280 | found = NULL; | |
281 | max_maj = max_min = 0; | |
282 | ||
283 | dir = opendir (dirname); | |
284 | if (dir == NULL) | |
285 | return NULL; | |
286 | dirnamelen = strlen (dirname); | |
b34976b6 | 287 | |
252b5132 RH |
288 | while ((entry = readdir (dir)) != NULL) |
289 | { | |
290 | const char *s; | |
291 | int found_maj, found_min; | |
292 | ||
293 | if (strncmp (entry->d_name, "lib", 3) != 0 | |
294 | || strncmp (entry->d_name + 3, filename, len) != 0) | |
295 | continue; | |
296 | ||
297 | if (dot == NULL | |
298 | && strcmp (entry->d_name + 3 + len, ".a") == 0) | |
299 | { | |
b34976b6 | 300 | *found_static = TRUE; |
252b5132 RH |
301 | continue; |
302 | } | |
303 | ||
304 | /* We accept libfoo.so without a version number, even though the | |
305 | native linker does not. This is more convenient for packages | |
306 | which just generate .so files for shared libraries, as on ELF | |
307 | systems. */ | |
308 | if (strncmp (entry->d_name + 3 + len, ".so", 3) != 0) | |
309 | continue; | |
310 | if (entry->d_name[6 + len] == '\0') | |
311 | ; | |
312 | else if (entry->d_name[6 + len] == '.' | |
3882b010 | 313 | && ISDIGIT (entry->d_name[7 + len])) |
252b5132 RH |
314 | ; |
315 | else | |
316 | continue; | |
317 | ||
318 | for (s = entry->d_name + 6 + len; *s != '\0'; s++) | |
3882b010 | 319 | if (*s != '.' && ! ISDIGIT (*s)) |
252b5132 RH |
320 | break; |
321 | if (*s != '\0') | |
322 | continue; | |
323 | ||
324 | /* We've found a .so file. Work out the major and minor | |
325 | version numbers. */ | |
326 | found_maj = 0; | |
327 | found_min = 0; | |
328 | sscanf (entry->d_name + 3 + len, ".so.%d.%d", | |
329 | &found_maj, &found_min); | |
330 | ||
331 | if ((force_maj != -1 && force_maj != found_maj) | |
332 | || (force_min != -1 && force_min != found_min)) | |
333 | continue; | |
334 | ||
335 | /* Make sure the file really exists (ignore broken symlinks). */ | |
336 | full_path = xmalloc (dirnamelen + 1 + strlen (entry->d_name) + 1); | |
337 | sprintf (full_path, "%s/%s", dirname, entry->d_name); | |
338 | statval = stat (full_path, &st); | |
339 | free (full_path); | |
340 | if (statval != 0) | |
341 | continue; | |
342 | ||
343 | /* We've found a match for the name we are searching for. See | |
344 | if this is the version we should use. If the major and minor | |
345 | versions match, we use the last entry in alphabetical order; | |
346 | I don't know if this is how SunOS distinguishes libc.so.1.8 | |
347 | from libc.so.1.8.1, but it ought to suffice. */ | |
348 | if (found == NULL | |
349 | || (found_maj > max_maj) | |
350 | || (found_maj == max_maj | |
351 | && (found_min > max_min | |
352 | || (found_min == max_min | |
353 | && strcmp (entry->d_name, found) > 0)))) | |
354 | { | |
355 | if (found != NULL) | |
356 | free (found); | |
357 | found = (char *) xmalloc (strlen (entry->d_name) + 1); | |
358 | strcpy (found, entry->d_name); | |
359 | max_maj = found_maj; | |
360 | max_min = found_min; | |
361 | } | |
362 | } | |
363 | ||
364 | closedir (dir); | |
365 | ||
366 | if (alc != NULL) | |
367 | free (alc); | |
368 | ||
369 | return found; | |
370 | } | |
371 | ||
372 | /* These variables are required to pass information back and forth | |
373 | between after_open and check_needed. */ | |
374 | ||
375 | static struct bfd_link_needed_list *global_needed; | |
b34976b6 | 376 | static bfd_boolean global_found; |
252b5132 RH |
377 | |
378 | /* This is called after all the input files have been opened. */ | |
379 | ||
380 | static void | |
381 | gld${EMULATION_NAME}_after_open () | |
382 | { | |
383 | struct bfd_link_needed_list *needed, *l; | |
384 | ||
385 | /* We only need to worry about this when doing a final link. */ | |
386 | if (link_info.relocateable || link_info.shared) | |
387 | return; | |
388 | ||
389 | /* Get the list of files which appear in ld_need entries in dynamic | |
390 | objects included in the link. For each such file, we want to | |
391 | track down the corresponding library, and include the symbol | |
392 | table in the link. This is what the runtime dynamic linker will | |
393 | do. Tracking the files down here permits one dynamic object to | |
394 | include another without requiring special action by the person | |
395 | doing the link. Note that the needed list can actually grow | |
396 | while we are stepping through this loop. */ | |
397 | needed = bfd_sunos_get_needed_list (output_bfd, &link_info); | |
398 | for (l = needed; l != NULL; l = l->next) | |
399 | { | |
400 | struct bfd_link_needed_list *ll; | |
401 | const char *lname; | |
402 | search_dirs_type *search; | |
403 | ||
404 | lname = l->name; | |
405 | ||
406 | /* If we've already seen this file, skip it. */ | |
407 | for (ll = needed; ll != l; ll = ll->next) | |
408 | if (strcmp (ll->name, lname) == 0) | |
409 | break; | |
410 | if (ll != l) | |
411 | continue; | |
412 | ||
413 | /* See if this file was included in the link explicitly. */ | |
414 | global_needed = l; | |
b34976b6 | 415 | global_found = FALSE; |
252b5132 RH |
416 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); |
417 | if (global_found) | |
418 | continue; | |
419 | ||
420 | if (strncmp (lname, "-l", 2) != 0) | |
421 | { | |
422 | bfd *abfd; | |
423 | ||
424 | abfd = bfd_openr (lname, bfd_get_target (output_bfd)); | |
425 | if (abfd != NULL) | |
426 | { | |
427 | if (! bfd_check_format (abfd, bfd_object)) | |
428 | { | |
429 | (void) bfd_close (abfd); | |
430 | abfd = NULL; | |
431 | } | |
432 | } | |
433 | if (abfd != NULL) | |
434 | { | |
435 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
436 | { | |
437 | (void) bfd_close (abfd); | |
438 | abfd = NULL; | |
439 | } | |
440 | } | |
441 | if (abfd != NULL) | |
442 | { | |
443 | /* We've found the needed dynamic object. */ | |
444 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
445 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
446 | } | |
447 | else | |
448 | { | |
449 | einfo ("%P: warning: %s, needed by %B, not found\n", | |
450 | lname, l->by); | |
451 | } | |
452 | ||
453 | continue; | |
454 | } | |
455 | ||
456 | lname += 2; | |
457 | ||
458 | /* We want to search for the file in the same way that the | |
459 | dynamic linker will search. That means that we want to use | |
460 | rpath_link, rpath or -L, then the environment variable | |
461 | LD_LIBRARY_PATH (native only), then (if rpath was used) the | |
462 | linker script LIB_SEARCH_DIRS. */ | |
463 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, | |
464 | lname)) | |
465 | continue; | |
466 | if (command_line.rpath != NULL) | |
467 | { | |
468 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, lname)) | |
469 | continue; | |
470 | } | |
471 | else | |
472 | { | |
473 | for (search = search_head; search != NULL; search = search->next) | |
474 | if (gld${EMULATION_NAME}_try_needed (search->name, lname)) | |
475 | break; | |
476 | if (search != NULL) | |
477 | continue; | |
478 | } | |
479 | EOF | |
480 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
481 | case " ${EMULATION_LIBPATH} " in |
482 | *" ${EMULATION_NAME} "*) | |
252b5132 RH |
483 | cat >>e${EMULATION_NAME}.c <<EOF |
484 | { | |
485 | const char *lib_path; | |
486 | ||
487 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); | |
488 | if (gld${EMULATION_NAME}_search_needed (lib_path, lname)) | |
489 | continue; | |
490 | } | |
491 | EOF | |
f97f7300 RH |
492 | ;; |
493 | esac | |
252b5132 RH |
494 | fi |
495 | cat >>e${EMULATION_NAME}.c <<EOF | |
496 | if (command_line.rpath != NULL) | |
497 | { | |
498 | for (search = search_head; search != NULL; search = search->next) | |
499 | { | |
500 | if (search->cmdline) | |
501 | continue; | |
502 | if (gld${EMULATION_NAME}_try_needed (search->name, lname)) | |
503 | break; | |
504 | } | |
505 | if (search != NULL) | |
506 | continue; | |
507 | } | |
508 | ||
509 | einfo ("%P: warning: %s, needed by %B, not found\n", | |
510 | l->name, l->by); | |
511 | } | |
512 | } | |
513 | ||
514 | /* Search for a needed file in a path. */ | |
515 | ||
b34976b6 | 516 | static bfd_boolean |
252b5132 RH |
517 | gld${EMULATION_NAME}_search_needed (path, name) |
518 | const char *path; | |
519 | const char *name; | |
520 | { | |
521 | const char *s; | |
522 | ||
523 | if (path == NULL || *path == '\0') | |
b34976b6 | 524 | return FALSE; |
252b5132 RH |
525 | while (1) |
526 | { | |
527 | const char *dir; | |
528 | char *dircopy; | |
529 | ||
530 | s = strchr (path, ':'); | |
531 | if (s == NULL) | |
532 | { | |
533 | dircopy = NULL; | |
534 | dir = path; | |
535 | } | |
536 | else | |
537 | { | |
538 | dircopy = (char *) xmalloc (s - path + 1); | |
539 | memcpy (dircopy, path, s - path); | |
540 | dircopy[s - path] = '\0'; | |
541 | dir = dircopy; | |
542 | } | |
543 | ||
544 | if (gld${EMULATION_NAME}_try_needed (dir, name)) | |
b34976b6 | 545 | return TRUE; |
252b5132 RH |
546 | |
547 | if (dircopy != NULL) | |
548 | free (dircopy); | |
549 | ||
550 | if (s == NULL) | |
551 | break; | |
552 | path = s + 1; | |
553 | } | |
554 | ||
b34976b6 | 555 | return FALSE; |
252b5132 RH |
556 | } |
557 | ||
558 | /* This function is called for each possible directory for a needed | |
559 | dynamic object. */ | |
560 | ||
b34976b6 | 561 | static bfd_boolean |
252b5132 RH |
562 | gld${EMULATION_NAME}_try_needed (dir, name) |
563 | const char *dir; | |
564 | const char *name; | |
565 | { | |
566 | char *file; | |
567 | char *alc; | |
b34976b6 | 568 | bfd_boolean ignore; |
252b5132 RH |
569 | bfd *abfd; |
570 | ||
571 | file = gld${EMULATION_NAME}_search_dir (dir, name, &ignore); | |
572 | if (file == NULL) | |
b34976b6 | 573 | return FALSE; |
252b5132 RH |
574 | |
575 | alc = (char *) xmalloc (strlen (dir) + strlen (file) + 2); | |
576 | sprintf (alc, "%s/%s", dir, file); | |
577 | free (file); | |
578 | abfd = bfd_openr (alc, bfd_get_target (output_bfd)); | |
579 | if (abfd == NULL) | |
b34976b6 | 580 | return FALSE; |
252b5132 RH |
581 | if (! bfd_check_format (abfd, bfd_object)) |
582 | { | |
583 | (void) bfd_close (abfd); | |
b34976b6 | 584 | return FALSE; |
252b5132 RH |
585 | } |
586 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
587 | { | |
588 | (void) bfd_close (abfd); | |
b34976b6 | 589 | return FALSE; |
252b5132 RH |
590 | } |
591 | ||
592 | /* We've found the needed dynamic object. */ | |
593 | ||
594 | /* Add this file into the symbol table. */ | |
595 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
596 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
597 | ||
b34976b6 | 598 | return TRUE; |
252b5132 RH |
599 | } |
600 | ||
601 | /* See if we have already included a needed object in the link. This | |
602 | does not have to be precise, as it does no harm to include a | |
603 | dynamic object more than once. */ | |
604 | ||
605 | static void | |
606 | gld${EMULATION_NAME}_check_needed (s) | |
607 | lang_input_statement_type *s; | |
608 | { | |
609 | if (s->filename == NULL) | |
610 | return; | |
611 | if (strncmp (global_needed->name, "-l", 2) != 0) | |
612 | { | |
613 | if (strcmp (s->filename, global_needed->name) == 0) | |
b34976b6 | 614 | global_found = TRUE; |
252b5132 RH |
615 | } |
616 | else | |
617 | { | |
618 | const char *sname, *lname; | |
619 | const char *sdot, *ldot; | |
620 | int lmaj, lmin, smaj, smin; | |
621 | ||
622 | lname = global_needed->name + 2; | |
623 | ||
624 | sname = strrchr (s->filename, '/'); | |
625 | if (sname == NULL) | |
626 | sname = s->filename; | |
627 | else | |
628 | ++sname; | |
629 | ||
630 | if (strncmp (sname, "lib", 3) != 0) | |
631 | return; | |
632 | sname += 3; | |
633 | ||
634 | ldot = strchr (lname, '.'); | |
635 | if (ldot == NULL) | |
636 | ldot = lname + strlen (lname); | |
637 | ||
638 | sdot = strstr (sname, ".so."); | |
639 | if (sdot == NULL) | |
640 | return; | |
641 | ||
642 | if (sdot - sname != ldot - lname | |
643 | || strncmp (lname, sname, sdot - sname) != 0) | |
644 | return; | |
645 | ||
646 | lmaj = lmin = -1; | |
647 | sscanf (ldot, ".%d.%d", &lmaj, &lmin); | |
648 | smaj = smin = -1; | |
649 | sscanf (sdot, ".so.%d.%d", &smaj, &smin); | |
650 | if ((smaj != lmaj && smaj != -1 && lmaj != -1) | |
651 | || (smin != lmin && smin != -1 && lmin != -1)) | |
652 | return; | |
653 | ||
b34976b6 | 654 | global_found = TRUE; |
252b5132 RH |
655 | } |
656 | } | |
657 | ||
658 | /* We need to use static variables to pass information around the call | |
659 | to lang_for_each_statement. Ick. */ | |
660 | ||
661 | static const char *find_assign; | |
b34976b6 | 662 | static bfd_boolean found_assign; |
252b5132 RH |
663 | |
664 | /* We need to use static variables to pass information around the call | |
665 | to lang_for_each_input_file. Ick. */ | |
666 | ||
667 | static bfd_size_type need_size; | |
668 | static bfd_size_type need_entries; | |
669 | static bfd_byte *need_contents; | |
670 | static bfd_byte *need_pinfo; | |
671 | static bfd_byte *need_pnames; | |
672 | ||
673 | /* The size of one entry in the .need section, not including the file | |
674 | name. */ | |
675 | ||
676 | #define NEED_ENTRY_SIZE (16) | |
677 | ||
678 | /* This is called after the sections have been attached to output | |
679 | sections, but before any sizes or addresses have been set. */ | |
680 | ||
681 | static void | |
682 | gld${EMULATION_NAME}_before_allocation () | |
683 | { | |
684 | struct bfd_link_hash_entry *hdyn = NULL; | |
685 | asection *sneed; | |
686 | asection *srules; | |
687 | asection *sdyn; | |
688 | ||
689 | /* The SunOS native linker creates a shared library whenever there | |
690 | are any undefined symbols in a link, unless -e is used. This is | |
691 | pretty weird, but we are compatible. */ | |
692 | if (! link_info.shared && ! link_info.relocateable && ! entry_from_cmdline) | |
693 | { | |
694 | struct bfd_link_hash_entry *h; | |
b34976b6 | 695 | |
252b5132 RH |
696 | for (h = link_info.hash->undefs; h != NULL; h = h->next) |
697 | { | |
698 | if (h->type == bfd_link_hash_undefined | |
699 | && h->u.undef.abfd != NULL | |
700 | && (h->u.undef.abfd->flags & DYNAMIC) == 0 | |
701 | && strcmp (h->root.string, "__DYNAMIC") != 0 | |
702 | && strcmp (h->root.string, "__GLOBAL_OFFSET_TABLE_") != 0) | |
703 | { | |
704 | find_assign = h->root.string; | |
b34976b6 | 705 | found_assign = FALSE; |
252b5132 RH |
706 | lang_for_each_statement (gld${EMULATION_NAME}_find_assignment); |
707 | if (! found_assign) | |
708 | { | |
b34976b6 | 709 | link_info.shared = TRUE; |
252b5132 RH |
710 | break; |
711 | } | |
712 | } | |
713 | } | |
714 | } | |
715 | ||
716 | if (link_info.shared) | |
717 | { | |
718 | lang_output_section_statement_type *os; | |
719 | ||
720 | /* Set the .text section to start at 0x20, not 0x2020. FIXME: | |
721 | This is too magical. */ | |
722 | os = lang_output_section_statement_lookup (".text"); | |
723 | if (os->addr_tree == NULL) | |
724 | os->addr_tree = exp_intop (0x20); | |
725 | } | |
726 | ||
727 | /* We need to create a __DYNAMIC symbol. We don't do this in the | |
728 | linker script because we want to set the value to the start of | |
729 | the dynamic section if there is one, or to zero if there isn't | |
730 | one. We need to create the symbol before calling | |
731 | size_dynamic_sections, although we can't set the value until | |
732 | afterward. */ | |
733 | if (! link_info.relocateable) | |
734 | { | |
b34976b6 AM |
735 | hdyn = bfd_link_hash_lookup (link_info.hash, "__DYNAMIC", TRUE, FALSE, |
736 | FALSE); | |
252b5132 RH |
737 | if (hdyn == NULL) |
738 | einfo ("%P%F: bfd_link_hash_lookup: %E\n"); | |
739 | if (! bfd_sunos_record_link_assignment (output_bfd, &link_info, | |
740 | "__DYNAMIC")) | |
741 | einfo ("%P%F: failed to record assignment to __DYNAMIC: %E\n"); | |
742 | } | |
743 | ||
744 | /* If we are going to make any variable assignments, we need to let | |
745 | the backend linker know about them in case the variables are | |
746 | referred to by dynamic objects. */ | |
747 | lang_for_each_statement (gld${EMULATION_NAME}_find_assignment); | |
748 | ||
749 | /* Let the backend linker work out the sizes of any sections | |
750 | required by dynamic linking. */ | |
751 | if (! bfd_sunos_size_dynamic_sections (output_bfd, &link_info, &sdyn, | |
752 | &sneed, &srules)) | |
753 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
754 | ||
755 | if (sneed != NULL) | |
756 | { | |
757 | /* Set up the .need section. See the description of the ld_need | |
758 | field in include/aout/sun4.h. */ | |
759 | ||
760 | need_entries = 0; | |
761 | need_size = 0; | |
762 | ||
763 | lang_for_each_input_file (gld${EMULATION_NAME}_count_need); | |
764 | ||
765 | /* We should only have a .need section if we have at least one | |
766 | dynamic object. */ | |
767 | ASSERT (need_entries != 0); | |
768 | ||
769 | sneed->_raw_size = need_size; | |
770 | sneed->contents = (bfd_byte *) xmalloc (need_size); | |
771 | ||
772 | need_contents = sneed->contents; | |
773 | need_pinfo = sneed->contents; | |
774 | need_pnames = sneed->contents + need_entries * 16; | |
775 | ||
776 | lang_for_each_input_file (gld${EMULATION_NAME}_set_need); | |
777 | ||
778 | ASSERT ((bfd_size_type) (need_pnames - sneed->contents) == need_size); | |
779 | } | |
780 | ||
781 | if (srules != NULL) | |
782 | { | |
783 | /* Set up the .rules section. This is just a PATH like string | |
784 | of the -L arguments given on the command line. We permit the | |
785 | user to specify the directories using the -rpath command line | |
786 | option. */ | |
787 | if (command_line.rpath) | |
788 | { | |
789 | srules->_raw_size = strlen (command_line.rpath); | |
790 | srules->contents = (bfd_byte *) command_line.rpath; | |
791 | } | |
792 | else | |
793 | { | |
794 | unsigned int size; | |
795 | search_dirs_type *search; | |
796 | ||
797 | size = 0; | |
798 | for (search = search_head; search != NULL; search = search->next) | |
799 | if (search->cmdline) | |
800 | size += strlen (search->name) + 1; | |
801 | srules->_raw_size = size; | |
802 | if (size > 0) | |
803 | { | |
804 | char *p; | |
805 | ||
806 | srules->contents = (bfd_byte *) xmalloc (size); | |
807 | p = (char *) srules->contents; | |
808 | *p = '\0'; | |
809 | for (search = search_head; search != NULL; search = search->next) | |
810 | { | |
811 | if (search->cmdline) | |
812 | { | |
813 | if (p != (char *) srules->contents) | |
814 | *p++ = ':'; | |
815 | strcpy (p, search->name); | |
816 | p += strlen (p); | |
817 | } | |
818 | } | |
819 | } | |
820 | } | |
821 | } | |
822 | ||
823 | /* We must assign a value to __DYNAMIC. It should be zero if we are | |
824 | not doing a dynamic link, or the start of the .dynamic section if | |
825 | we are doing one. */ | |
826 | if (! link_info.relocateable) | |
827 | { | |
828 | hdyn->type = bfd_link_hash_defined; | |
829 | hdyn->u.def.value = 0; | |
830 | if (sdyn != NULL) | |
831 | hdyn->u.def.section = sdyn; | |
832 | else | |
833 | hdyn->u.def.section = bfd_abs_section_ptr; | |
834 | } | |
835 | } | |
836 | ||
837 | /* This is called by the before_allocation routine via | |
838 | lang_for_each_statement. It does one of two things: if the | |
839 | variable find_assign is set, it sets found_assign if it finds an | |
840 | assignment to that variable; otherwise it tells the backend linker | |
841 | about all assignment statements, in case they are assignments to | |
842 | symbols which are referred to by dynamic objects. */ | |
843 | ||
844 | static void | |
845 | gld${EMULATION_NAME}_find_assignment (s) | |
846 | lang_statement_union_type *s; | |
847 | { | |
848 | if (s->header.type == lang_assignment_statement_enum | |
849 | && (find_assign == NULL || ! found_assign)) | |
850 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
851 | } | |
852 | ||
853 | /* Look through an expression for an assignment statement. */ | |
854 | ||
855 | static void | |
856 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
857 | etree_type *exp; | |
858 | { | |
859 | switch (exp->type.node_class) | |
860 | { | |
861 | case etree_assign: | |
862 | if (find_assign != NULL) | |
863 | { | |
864 | if (strcmp (find_assign, exp->assign.dst) == 0) | |
b34976b6 | 865 | found_assign = TRUE; |
252b5132 RH |
866 | return; |
867 | } | |
868 | ||
869 | if (strcmp (exp->assign.dst, ".") != 0) | |
870 | { | |
871 | if (! bfd_sunos_record_link_assignment (output_bfd, &link_info, | |
872 | exp->assign.dst)) | |
873 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
874 | exp->assign.dst); | |
875 | } | |
876 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
877 | break; | |
878 | ||
879 | case etree_binary: | |
880 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
881 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
882 | break; | |
883 | ||
884 | case etree_trinary: | |
885 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
886 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
887 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
888 | break; | |
889 | ||
890 | case etree_unary: | |
891 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
892 | break; | |
893 | ||
894 | default: | |
895 | break; | |
896 | } | |
897 | } | |
898 | ||
899 | /* Work out the size of the .need section, and the number of entries. | |
900 | The backend will set the ld_need field of the dynamic linking | |
901 | information to point to the .need section. See include/aout/sun4.h | |
902 | for more information. */ | |
903 | ||
904 | static void | |
905 | gld${EMULATION_NAME}_count_need (inp) | |
906 | lang_input_statement_type *inp; | |
907 | { | |
908 | if (inp->the_bfd != NULL | |
909 | && (inp->the_bfd->flags & DYNAMIC) != 0) | |
910 | { | |
911 | ++need_entries; | |
912 | need_size += NEED_ENTRY_SIZE; | |
913 | if (! inp->is_archive) | |
914 | need_size += strlen (inp->filename) + 1; | |
915 | else | |
916 | { | |
917 | ASSERT (inp->local_sym_name[0] == '-' | |
918 | && inp->local_sym_name[1] == 'l'); | |
919 | need_size += strlen (inp->local_sym_name + 2) + 1; | |
920 | } | |
921 | } | |
922 | } | |
923 | ||
924 | /* Fill in the contents of the .need section. */ | |
925 | ||
926 | static void | |
927 | gld${EMULATION_NAME}_set_need (inp) | |
928 | lang_input_statement_type *inp; | |
929 | { | |
930 | if (inp->the_bfd != NULL | |
931 | && (inp->the_bfd->flags & DYNAMIC) != 0) | |
932 | { | |
933 | bfd_size_type c; | |
934 | ||
935 | /* To really fill in the .need section contents, we need to know | |
936 | the final file position of the section, but we don't. | |
937 | Instead, we use offsets, and rely on the BFD backend to | |
938 | finish the section up correctly. FIXME: Talk about lack of | |
939 | referential locality. */ | |
940 | bfd_put_32 (output_bfd, need_pnames - need_contents, need_pinfo); | |
941 | if (! inp->is_archive) | |
942 | { | |
943 | bfd_put_32 (output_bfd, (bfd_vma) 0, need_pinfo + 4); | |
944 | bfd_put_16 (output_bfd, (bfd_vma) 0, need_pinfo + 8); | |
945 | bfd_put_16 (output_bfd, (bfd_vma) 0, need_pinfo + 10); | |
946 | strcpy (need_pnames, inp->filename); | |
947 | } | |
948 | else | |
949 | { | |
950 | char *verstr; | |
951 | int maj, min; | |
952 | ||
953 | bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, need_pinfo + 4); | |
954 | maj = 0; | |
955 | min = 0; | |
956 | verstr = strstr (inp->filename, ".so."); | |
957 | if (verstr != NULL) | |
958 | sscanf (verstr, ".so.%d.%d", &maj, &min); | |
959 | bfd_put_16 (output_bfd, (bfd_vma) maj, need_pinfo + 8); | |
960 | bfd_put_16 (output_bfd, (bfd_vma) min, need_pinfo + 10); | |
961 | strcpy (need_pnames, inp->local_sym_name + 2); | |
962 | } | |
963 | ||
964 | c = (need_pinfo - need_contents) / NEED_ENTRY_SIZE; | |
965 | if (c + 1 >= need_entries) | |
966 | bfd_put_32 (output_bfd, (bfd_vma) 0, need_pinfo + 12); | |
967 | else | |
968 | bfd_put_32 (output_bfd, (bfd_vma) (c + 1) * NEED_ENTRY_SIZE, | |
969 | need_pinfo + 12); | |
970 | ||
971 | need_pinfo += NEED_ENTRY_SIZE; | |
972 | need_pnames += strlen (need_pnames) + 1; | |
973 | } | |
974 | } | |
975 | ||
976 | static char * | |
977 | gld${EMULATION_NAME}_get_script(isfile) | |
978 | int *isfile; | |
979 | EOF | |
980 | ||
981 | if test -n "$COMPILE_IN" | |
982 | then | |
983 | # Scripts compiled in. | |
984 | ||
985 | # sed commands to quote an ld script as a C string. | |
597e2591 | 986 | sc="-f stringify.sed" |
252b5132 RH |
987 | |
988 | cat >>e${EMULATION_NAME}.c <<EOF | |
b34976b6 | 989 | { |
252b5132 RH |
990 | *isfile = 0; |
991 | ||
b34976b6 | 992 | if (link_info.relocateable && config.build_constructors) |
597e2591 | 993 | return |
252b5132 | 994 | EOF |
597e2591 | 995 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
b34976b6 | 996 | echo ' ; else if (link_info.relocateable) return' >> e${EMULATION_NAME}.c |
597e2591 ILT |
997 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
998 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
999 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
1000 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
1001 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
1002 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
1003 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1004 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
1005 | |
1006 | else | |
1007 | # Scripts read from the filesystem. | |
1008 | ||
1009 | cat >>e${EMULATION_NAME}.c <<EOF | |
b34976b6 | 1010 | { |
252b5132 RH |
1011 | *isfile = 1; |
1012 | ||
b34976b6 | 1013 | if (link_info.relocateable && config.build_constructors) |
252b5132 | 1014 | return "ldscripts/${EMULATION_NAME}.xu"; |
b34976b6 | 1015 | else if (link_info.relocateable) |
252b5132 RH |
1016 | return "ldscripts/${EMULATION_NAME}.xr"; |
1017 | else if (!config.text_read_only) | |
1018 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1019 | else if (!config.magic_demand_paged) | |
1020 | return "ldscripts/${EMULATION_NAME}.xn"; | |
1021 | else | |
1022 | return "ldscripts/${EMULATION_NAME}.x"; | |
1023 | } | |
1024 | EOF | |
1025 | ||
1026 | fi | |
1027 | ||
1028 | cat >>e${EMULATION_NAME}.c <<EOF | |
1029 | ||
b34976b6 | 1030 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 RH |
1031 | { |
1032 | gld${EMULATION_NAME}_before_parse, | |
1033 | syslib_default, | |
1034 | hll_default, | |
1035 | after_parse_default, | |
1036 | gld${EMULATION_NAME}_after_open, | |
1037 | after_allocation_default, | |
1038 | set_output_arch_default, | |
1039 | ldemul_default_target, | |
1040 | gld${EMULATION_NAME}_before_allocation, | |
1041 | gld${EMULATION_NAME}_get_script, | |
1042 | "${EMULATION_NAME}", | |
1043 | "${OUTPUT_FORMAT}", | |
e1c47aa4 | 1044 | NULL, /* finish */ |
252b5132 | 1045 | gld${EMULATION_NAME}_create_output_section_statements, |
e1c47aa4 AM |
1046 | NULL, /* open dynamic archive */ |
1047 | NULL, /* place orphan */ | |
1048 | gld${EMULATION_NAME}_set_symbols, | |
1049 | NULL, /* parse args */ | |
3bcf5557 AM |
1050 | NULL, /* add_options */ |
1051 | NULL, /* handle_option */ | |
e1c47aa4 AM |
1052 | NULL, /* unrecognized file */ |
1053 | NULL, /* list options */ | |
40d109bf | 1054 | NULL, /* recognized file */ |
fac1652d AM |
1055 | NULL, /* find_potential_libraries */ |
1056 | NULL /* new_vers_pattern */ | |
252b5132 RH |
1057 | }; |
1058 | EOF |