Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
3 | # This file is now misnamed, because it supports both 32 bit and 64 bit | |
4 | # ELF emulations. | |
5 | test -z "${ELFSIZE}" && ELFSIZE=32 | |
86af25fe L |
6 | if [ -z "$MACHINE" ]; then |
7 | OUTPUT_ARCH=${ARCH} | |
8 | else | |
9 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
10 | fi | |
92b93329 | 11 | fragment <<EOF |
252b5132 RH |
12 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
13 | ||
14 | /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME} | |
e3dc8847 | 15 | Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
ff7a0acf | 16 | 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
252b5132 RH |
17 | Written by Steve Chamberlain <sac@cygnus.com> |
18 | ELF support by Ian Lance Taylor <ian@cygnus.com> | |
19 | ||
f96b4a7b NC |
20 | This file is part of the GNU Binutils. |
21 | ||
22 | This program is free software; you can redistribute it and/or modify | |
23 | it under the terms of the GNU General Public License as published by | |
24 | the Free Software Foundation; either version 3 of the License, or | |
25 | (at your option) any later version. | |
26 | ||
27 | This program is distributed in the hope that it will be useful, | |
28 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
29 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
30 | GNU General Public License for more details. | |
31 | ||
32 | You should have received a copy of the GNU General Public License | |
33 | along with this program; if not, write to the Free Software | |
34 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
35 | MA 02110-1301, USA. */ | |
252b5132 RH |
36 | |
37 | #define TARGET_IS_${EMULATION_NAME} | |
38 | ||
252b5132 | 39 | #include "sysdep.h" |
3db64b00 | 40 | #include "bfd.h" |
1c9acd94 | 41 | #include "libiberty.h" |
3882b010 | 42 | #include "safe-ctype.h" |
fcf65871 | 43 | #include "getopt.h" |
24382dca RM |
44 | #include "md5.h" |
45 | #include "sha1.h" | |
46 | #include <fcntl.h> | |
252b5132 RH |
47 | |
48 | #include "bfdlink.h" | |
49 | ||
50 | #include "ld.h" | |
51 | #include "ldmain.h" | |
252b5132 RH |
52 | #include "ldmisc.h" |
53 | #include "ldexp.h" | |
54 | #include "ldlang.h" | |
b71e2778 AM |
55 | #include "ldfile.h" |
56 | #include "ldemul.h" | |
df2a7313 | 57 | #include <ldgram.h> |
e0ee487b | 58 | #include "elf/common.h" |
ecca9871 | 59 | #include "elf-bfd.h" |
252b5132 | 60 | |
0c7a8e5a AM |
61 | /* Declare functions used by various EXTRA_EM_FILEs. */ |
62 | static void gld${EMULATION_NAME}_before_parse (void); | |
63 | static void gld${EMULATION_NAME}_after_open (void); | |
64 | static void gld${EMULATION_NAME}_before_allocation (void); | |
c2edb4b8 | 65 | static lang_output_section_statement_type *gld${EMULATION_NAME}_place_orphan |
8a99a385 | 66 | (asection *, const char *, int); |
8ded5a0f | 67 | static void gld${EMULATION_NAME}_finish (void); |
252b5132 | 68 | |
41392f03 AM |
69 | EOF |
70 | ||
d3989512 JJ |
71 | if [ "x${USE_LIBPATH}" = xyes ] ; then |
72 | case ${target} in | |
711c0baa | 73 | *-*-linux-* | *-*-k*bsd*-*) |
92b93329 | 74 | fragment <<EOF |
0b48acfe | 75 | #ifdef HAVE_GLOB |
d3989512 | 76 | #include <glob.h> |
0b48acfe | 77 | #endif |
d3989512 JJ |
78 | EOF |
79 | ;; | |
80 | esac | |
81 | fi | |
82 | ||
41392f03 AM |
83 | # Import any needed special functions and/or overrides. |
84 | # | |
92b93329 | 85 | source_em ${srcdir}/emultempl/elf-generic.em |
41392f03 | 86 | if test -n "$EXTRA_EM_FILE" ; then |
92b93329 | 87 | source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em |
41392f03 AM |
88 | fi |
89 | ||
f813923c | 90 | # Functions in this file can be overridden by setting the LDEMUL_* shell |
41392f03 AM |
91 | # variables. If the name of the overriding function is the same as is |
92 | # defined in this file, then don't output this file's version. | |
93 | # If a different overriding name is given then output the standard function | |
94 | # as presumably it is called from the overriding function. | |
95 | # | |
96 | if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then | |
92b93329 | 97 | fragment <<EOF |
41392f03 | 98 | |
252b5132 | 99 | static void |
0c7a8e5a | 100 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 | 101 | { |
5e2f1575 | 102 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
b34976b6 AM |
103 | config.dynamic_link = ${DYNAMIC_LINK-TRUE}; |
104 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; | |
252b5132 RH |
105 | } |
106 | ||
41392f03 AM |
107 | EOF |
108 | fi | |
109 | ||
4a43e768 | 110 | if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then |
92b93329 | 111 | fragment <<EOF |
4a43e768 AM |
112 | /* Handle as_needed DT_NEEDED. */ |
113 | ||
114 | static bfd_boolean | |
115 | gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry) | |
116 | { | |
e56f61be | 117 | int class = 0; |
4a43e768 AM |
118 | |
119 | /* Tell the ELF linker that we don't want the output file to have a | |
120 | DT_NEEDED entry for this file, unless it is used to resolve | |
121 | references in a regular object. */ | |
e56f61be L |
122 | if (entry->as_needed) |
123 | class = DYN_AS_NEEDED; | |
124 | ||
125 | /* Tell the ELF linker that we don't want the output file to have a | |
126 | DT_NEEDED entry for any dynamic library in DT_NEEDED tags from | |
127 | this file at all. */ | |
128 | if (!entry->add_needed) | |
129 | class |= DYN_NO_ADD_NEEDED; | |
130 | ||
12b9ff6c L |
131 | if (entry->just_syms_flag |
132 | && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0) | |
133 | einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"), | |
134 | entry->the_bfd); | |
135 | ||
e56f61be L |
136 | if (!class |
137 | || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0) | |
138 | return FALSE; | |
139 | ||
140 | bfd_elf_set_dyn_lib_class (entry->the_bfd, class); | |
4a43e768 AM |
141 | |
142 | /* Continue on with normal load_symbols processing. */ | |
143 | return FALSE; | |
144 | } | |
145 | EOF | |
146 | fi | |
147 | ||
92b93329 | 148 | fragment <<EOF |
252b5132 RH |
149 | |
150 | /* These variables are required to pass information back and forth | |
151 | between after_open and check_needed and stat_needed and vercheck. */ | |
152 | ||
153 | static struct bfd_link_needed_list *global_needed; | |
154 | static struct stat global_stat; | |
e13629bc | 155 | static lang_input_statement_type *global_found; |
252b5132 | 156 | static struct bfd_link_needed_list *global_vercheck_needed; |
b34976b6 | 157 | static bfd_boolean global_vercheck_failed; |
252b5132 | 158 | |
252b5132 | 159 | |
04925e1e AM |
160 | /* On Linux, it's possible to have different versions of the same |
161 | shared library linked against different versions of libc. The | |
162 | dynamic linker somehow tags which libc version to use in | |
163 | /etc/ld.so.cache, and, based on the libc that it sees in the | |
164 | executable, chooses which version of the shared library to use. | |
252b5132 | 165 | |
04925e1e AM |
166 | We try to do a similar check here by checking whether this shared |
167 | library needs any other shared libraries which may conflict with | |
168 | libraries we have already included in the link. If it does, we | |
169 | skip it, and try to find another shared library farther on down the | |
170 | link path. | |
252b5132 | 171 | |
04925e1e AM |
172 | This is called via lang_for_each_input_file. |
173 | GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object | |
f813923c | 174 | which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find |
04925e1e | 175 | a conflicting version. */ |
252b5132 | 176 | |
04925e1e | 177 | static void |
0c7a8e5a | 178 | gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s) |
04925e1e | 179 | { |
1c9acd94 | 180 | const char *soname; |
04925e1e | 181 | struct bfd_link_needed_list *l; |
252b5132 | 182 | |
04925e1e AM |
183 | if (global_vercheck_failed) |
184 | return; | |
185 | if (s->the_bfd == NULL | |
186 | || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0) | |
187 | return; | |
252b5132 | 188 | |
04925e1e AM |
189 | soname = bfd_elf_get_dt_soname (s->the_bfd); |
190 | if (soname == NULL) | |
fed2999d | 191 | soname = lbasename (bfd_get_filename (s->the_bfd)); |
04925e1e AM |
192 | |
193 | for (l = global_vercheck_needed; l != NULL; l = l->next) | |
194 | { | |
195 | const char *suffix; | |
196 | ||
1c9acd94 | 197 | if (strcmp (soname, l->name) == 0) |
04925e1e AM |
198 | { |
199 | /* Probably can't happen, but it's an easy check. */ | |
200 | continue; | |
252b5132 RH |
201 | } |
202 | ||
04925e1e | 203 | if (strchr (l->name, '/') != NULL) |
252b5132 RH |
204 | continue; |
205 | ||
04925e1e AM |
206 | suffix = strstr (l->name, ".so."); |
207 | if (suffix == NULL) | |
208 | continue; | |
209 | ||
210 | suffix += sizeof ".so." - 1; | |
211 | ||
1c9acd94 | 212 | if (strncmp (soname, l->name, suffix - l->name) == 0) |
04925e1e AM |
213 | { |
214 | /* Here we know that S is a dynamic object FOO.SO.VER1, and | |
0c7a8e5a AM |
215 | the object we are considering needs a dynamic object |
216 | FOO.SO.VER2, and VER1 and VER2 are different. This | |
217 | appears to be a version mismatch, so we tell the caller | |
218 | to try a different version of this library. */ | |
b34976b6 | 219 | global_vercheck_failed = TRUE; |
04925e1e AM |
220 | return; |
221 | } | |
252b5132 RH |
222 | } |
223 | } | |
224 | ||
252b5132 | 225 | |
04925e1e AM |
226 | /* See if an input file matches a DT_NEEDED entry by running stat on |
227 | the file. */ | |
228 | ||
229 | static void | |
0c7a8e5a | 230 | gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s) |
252b5132 | 231 | { |
04925e1e AM |
232 | struct stat st; |
233 | const char *suffix; | |
234 | const char *soname; | |
252b5132 | 235 | |
e13629bc | 236 | if (global_found != NULL) |
04925e1e AM |
237 | return; |
238 | if (s->the_bfd == NULL) | |
239 | return; | |
e13629bc AM |
240 | |
241 | /* If this input file was an as-needed entry, and wasn't found to be | |
242 | needed at the stage it was linked, then don't say we have loaded it. */ | |
243 | if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0) | |
7cedef86 | 244 | return; |
04925e1e AM |
245 | |
246 | if (bfd_stat (s->the_bfd, &st) != 0) | |
252b5132 | 247 | { |
04925e1e AM |
248 | einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd); |
249 | return; | |
250 | } | |
252b5132 | 251 | |
9eabd475 ZW |
252 | /* Some operating systems, e.g. Windows, do not provide a meaningful |
253 | st_ino; they always set it to zero. (Windows does provide a | |
254 | meaningful st_dev.) Do not indicate a duplicate library in that | |
255 | case. While there is no guarantee that a system that provides | |
256 | meaningful inode numbers will never set st_ino to zero, this is | |
257 | merely an optimization, so we do not need to worry about false | |
258 | negatives. */ | |
04925e1e | 259 | if (st.st_dev == global_stat.st_dev |
9eabd475 ZW |
260 | && st.st_ino == global_stat.st_ino |
261 | && st.st_ino != 0) | |
04925e1e | 262 | { |
e13629bc | 263 | global_found = s; |
04925e1e AM |
264 | return; |
265 | } | |
252b5132 | 266 | |
04925e1e AM |
267 | /* We issue a warning if it looks like we are including two |
268 | different versions of the same shared library. For example, | |
269 | there may be a problem if -lc picks up libc.so.6 but some other | |
270 | shared library has a DT_NEEDED entry of libc.so.5. This is a | |
f813923c | 271 | heuristic test, and it will only work if the name looks like |
04925e1e AM |
272 | NAME.so.VERSION. FIXME: Depending on file names is error-prone. |
273 | If we really want to issue warnings about mixing version numbers | |
274 | of shared libraries, we need to find a better way. */ | |
252b5132 | 275 | |
04925e1e AM |
276 | if (strchr (global_needed->name, '/') != NULL) |
277 | return; | |
278 | suffix = strstr (global_needed->name, ".so."); | |
279 | if (suffix == NULL) | |
280 | return; | |
281 | suffix += sizeof ".so." - 1; | |
252b5132 | 282 | |
04925e1e AM |
283 | soname = bfd_elf_get_dt_soname (s->the_bfd); |
284 | if (soname == NULL) | |
fed2999d | 285 | soname = lbasename (s->filename); |
252b5132 | 286 | |
cde43e70 | 287 | if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0) |
04925e1e | 288 | einfo ("%P: warning: %s, needed by %B, may conflict with %s\n", |
1c9acd94 | 289 | global_needed->name, global_needed->by, soname); |
252b5132 RH |
290 | } |
291 | ||
e56f61be L |
292 | struct dt_needed |
293 | { | |
294 | bfd *by; | |
295 | const char *name; | |
296 | }; | |
04925e1e | 297 | |
252b5132 RH |
298 | /* This function is called for each possible name for a dynamic object |
299 | named by a DT_NEEDED entry. The FORCE parameter indicates whether | |
300 | to skip the check for a conflicting version. */ | |
301 | ||
b34976b6 | 302 | static bfd_boolean |
e56f61be L |
303 | gld${EMULATION_NAME}_try_needed (struct dt_needed *needed, |
304 | int force) | |
252b5132 RH |
305 | { |
306 | bfd *abfd; | |
e56f61be | 307 | const char *name = needed->name; |
ec4eb78a | 308 | const char *soname; |
e56f61be | 309 | int class; |
252b5132 | 310 | |
f13a99db | 311 | abfd = bfd_openr (name, bfd_get_target (link_info.output_bfd)); |
252b5132 | 312 | if (abfd == NULL) |
b34976b6 | 313 | return FALSE; |
252b5132 RH |
314 | if (! bfd_check_format (abfd, bfd_object)) |
315 | { | |
cde43e70 | 316 | bfd_close (abfd); |
b34976b6 | 317 | return FALSE; |
252b5132 RH |
318 | } |
319 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
320 | { | |
cde43e70 | 321 | bfd_close (abfd); |
b34976b6 | 322 | return FALSE; |
252b5132 RH |
323 | } |
324 | ||
c4bb8067 | 325 | /* For DT_NEEDED, they have to match. */ |
f13a99db | 326 | if (abfd->xvec != link_info.output_bfd->xvec) |
c4bb8067 L |
327 | { |
328 | bfd_close (abfd); | |
b34976b6 | 329 | return FALSE; |
c4bb8067 L |
330 | } |
331 | ||
252b5132 RH |
332 | /* Check whether this object would include any conflicting library |
333 | versions. If FORCE is set, then we skip this check; we use this | |
334 | the second time around, if we couldn't find any compatible | |
335 | instance of the shared library. */ | |
336 | ||
337 | if (! force) | |
338 | { | |
339 | struct bfd_link_needed_list *needed; | |
340 | ||
341 | if (! bfd_elf_get_bfd_needed_list (abfd, &needed)) | |
342 | einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd); | |
343 | ||
344 | if (needed != NULL) | |
345 | { | |
346 | global_vercheck_needed = needed; | |
b34976b6 | 347 | global_vercheck_failed = FALSE; |
252b5132 RH |
348 | lang_for_each_input_file (gld${EMULATION_NAME}_vercheck); |
349 | if (global_vercheck_failed) | |
350 | { | |
cde43e70 | 351 | bfd_close (abfd); |
b34976b6 | 352 | /* Return FALSE to force the caller to move on to try |
0c7a8e5a | 353 | another file on the search path. */ |
b34976b6 | 354 | return FALSE; |
252b5132 RH |
355 | } |
356 | ||
357 | /* But wait! It gets much worse. On Linux, if a shared | |
0c7a8e5a AM |
358 | library does not use libc at all, we are supposed to skip |
359 | it the first time around in case we encounter a shared | |
360 | library later on with the same name which does use the | |
361 | version of libc that we want. This is much too horrible | |
362 | to use on any system other than Linux. */ | |
252b5132 RH |
363 | |
364 | EOF | |
365 | case ${target} in | |
711c0baa | 366 | *-*-linux-* | *-*-k*bsd*-*) |
92b93329 | 367 | fragment <<EOF |
252b5132 RH |
368 | { |
369 | struct bfd_link_needed_list *l; | |
370 | ||
371 | for (l = needed; l != NULL; l = l->next) | |
0112cd26 | 372 | if (CONST_STRNEQ (l->name, "libc.so")) |
252b5132 RH |
373 | break; |
374 | if (l == NULL) | |
375 | { | |
cde43e70 | 376 | bfd_close (abfd); |
b34976b6 | 377 | return FALSE; |
252b5132 RH |
378 | } |
379 | } | |
380 | ||
381 | EOF | |
382 | ;; | |
383 | esac | |
92b93329 | 384 | fragment <<EOF |
252b5132 RH |
385 | } |
386 | } | |
387 | ||
388 | /* We've found a dynamic object matching the DT_NEEDED entry. */ | |
389 | ||
04925e1e AM |
390 | /* We have already checked that there is no other input file of the |
391 | same name. We must now check again that we are not including the | |
392 | same file twice. We need to do this because on many systems | |
393 | libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will | |
394 | reference libc.so.1. If we have already included libc.so, we | |
395 | don't want to include libc.so.1 if they are the same file, and we | |
396 | can only check that using stat. */ | |
397 | ||
398 | if (bfd_stat (abfd, &global_stat) != 0) | |
399 | einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd); | |
ec4eb78a L |
400 | |
401 | /* First strip off everything before the last '/'. */ | |
fed2999d | 402 | soname = lbasename (abfd->filename); |
ec4eb78a L |
403 | |
404 | if (trace_file_tries) | |
405 | info_msg (_("found %s at %s\n"), soname, name); | |
406 | ||
e13629bc | 407 | global_found = NULL; |
04925e1e | 408 | lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed); |
e13629bc | 409 | if (global_found != NULL) |
04925e1e | 410 | { |
b34976b6 | 411 | /* Return TRUE to indicate that we found the file, even though |
0c7a8e5a | 412 | we aren't going to do anything with it. */ |
b34976b6 | 413 | return TRUE; |
04925e1e AM |
414 | } |
415 | ||
4a43e768 AM |
416 | /* Specify the soname to use. */ |
417 | bfd_elf_set_dt_needed_name (abfd, soname); | |
04925e1e | 418 | |
4a43e768 AM |
419 | /* Tell the ELF linker that we don't want the output file to have a |
420 | DT_NEEDED entry for this file, unless it is used to resolve | |
421 | references in a regular object. */ | |
e56f61be L |
422 | class = DYN_DT_NEEDED; |
423 | ||
424 | /* Tell the ELF linker that we don't want the output file to have a | |
425 | DT_NEEDED entry for this file at all if the entry is from a file | |
426 | with DYN_NO_ADD_NEEDED. */ | |
7e9f0867 AM |
427 | if (needed->by != NULL |
428 | && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0) | |
e56f61be L |
429 | class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED; |
430 | ||
431 | bfd_elf_set_dyn_lib_class (abfd, class); | |
04925e1e AM |
432 | |
433 | /* Add this file into the symbol table. */ | |
434 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
435 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
436 | ||
b34976b6 | 437 | return TRUE; |
04925e1e AM |
438 | } |
439 | ||
440 | ||
441 | /* Search for a needed file in a path. */ | |
442 | ||
b34976b6 | 443 | static bfd_boolean |
e56f61be L |
444 | gld${EMULATION_NAME}_search_needed (const char *path, |
445 | struct dt_needed *n, int force) | |
04925e1e AM |
446 | { |
447 | const char *s; | |
e56f61be | 448 | const char *name = n->name; |
04925e1e | 449 | size_t len; |
e56f61be | 450 | struct dt_needed needed; |
04925e1e | 451 | |
cc5ce052 | 452 | if (name[0] == '/') |
e56f61be | 453 | return gld${EMULATION_NAME}_try_needed (n, force); |
cc5ce052 | 454 | |
04925e1e | 455 | if (path == NULL || *path == '\0') |
b34976b6 | 456 | return FALSE; |
e56f61be L |
457 | |
458 | needed.by = n->by; | |
459 | needed.name = n->name; | |
460 | ||
04925e1e AM |
461 | len = strlen (name); |
462 | while (1) | |
463 | { | |
464 | char *filename, *sset; | |
465 | ||
c76308d2 | 466 | s = strchr (path, config.rpath_separator); |
04925e1e AM |
467 | if (s == NULL) |
468 | s = path + strlen (path); | |
469 | ||
470 | filename = (char *) xmalloc (s - path + len + 2); | |
471 | if (s == path) | |
472 | sset = filename; | |
473 | else | |
474 | { | |
475 | memcpy (filename, path, s - path); | |
476 | filename[s - path] = '/'; | |
477 | sset = filename + (s - path) + 1; | |
478 | } | |
479 | strcpy (sset, name); | |
480 | ||
e56f61be L |
481 | needed.name = filename; |
482 | if (gld${EMULATION_NAME}_try_needed (&needed, force)) | |
b34976b6 | 483 | return TRUE; |
04925e1e AM |
484 | |
485 | free (filename); | |
486 | ||
487 | if (*s == '\0') | |
488 | break; | |
489 | path = s + 1; | |
490 | } | |
491 | ||
b34976b6 | 492 | return FALSE; |
04925e1e AM |
493 | } |
494 | ||
495 | EOF | |
9c8ebd6a | 496 | if [ "x${USE_LIBPATH}" = xyes ] ; then |
92b93329 | 497 | fragment <<EOF |
9c8ebd6a | 498 | |
c76308d2 RS |
499 | /* Add the sysroot to every entry in a path separated by |
500 | config.rpath_separator. */ | |
9c8ebd6a DJ |
501 | |
502 | static char * | |
0c7a8e5a | 503 | gld${EMULATION_NAME}_add_sysroot (const char *path) |
9c8ebd6a DJ |
504 | { |
505 | int len, colons, i; | |
506 | char *ret, *p; | |
507 | ||
508 | len = strlen (path); | |
509 | colons = 0; | |
510 | i = 0; | |
511 | while (path[i]) | |
c76308d2 | 512 | if (path[i++] == config.rpath_separator) |
9c8ebd6a DJ |
513 | colons++; |
514 | ||
515 | if (path[i]) | |
516 | colons++; | |
517 | ||
42644a89 | 518 | len = len + (colons + 1) * strlen (ld_sysroot); |
9c8ebd6a DJ |
519 | ret = xmalloc (len + 1); |
520 | strcpy (ret, ld_sysroot); | |
521 | p = ret + strlen (ret); | |
522 | i = 0; | |
523 | while (path[i]) | |
c76308d2 | 524 | if (path[i] == config.rpath_separator) |
9c8ebd6a | 525 | { |
0c7a8e5a | 526 | *p++ = path[i++]; |
9c8ebd6a DJ |
527 | strcpy (p, ld_sysroot); |
528 | p = p + strlen (p); | |
9c8ebd6a DJ |
529 | } |
530 | else | |
531 | *p++ = path[i++]; | |
532 | ||
533 | *p = 0; | |
534 | return ret; | |
535 | } | |
04925e1e | 536 | |
3dc16cab DJ |
537 | EOF |
538 | case ${target} in | |
ebe1fac1 | 539 | *-*-freebsd* | *-*-dragonfly*) |
92b93329 | 540 | fragment <<EOF |
ebe1fac1 NC |
541 | /* Read the system search path the FreeBSD way rather than the Linux way. */ |
542 | #ifdef HAVE_ELF_HINTS_H | |
543 | #include <elf-hints.h> | |
544 | #else | |
545 | #include "elf-hints-local.h" | |
546 | #endif | |
547 | ||
548 | static bfd_boolean | |
549 | gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force) | |
550 | { | |
551 | static bfd_boolean initialized; | |
552 | static char *ld_elf_hints; | |
553 | struct dt_needed needed; | |
554 | ||
555 | if (!initialized) | |
556 | { | |
557 | FILE *f; | |
558 | char *tmppath; | |
559 | ||
ff7a0acf | 560 | tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, (const char *) NULL); |
ebe1fac1 NC |
561 | f = fopen (tmppath, FOPEN_RB); |
562 | free (tmppath); | |
563 | if (f != NULL) | |
564 | { | |
565 | struct elfhints_hdr hdr; | |
566 | ||
567 | if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr) | |
568 | && hdr.magic == ELFHINTS_MAGIC | |
569 | && hdr.version == 1) | |
570 | { | |
571 | if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1) | |
572 | { | |
573 | char *b; | |
574 | ||
575 | b = xmalloc (hdr.dirlistlen + 1); | |
576 | if (fread (b, 1, hdr.dirlistlen + 1, f) == | |
577 | hdr.dirlistlen + 1) | |
578 | ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b); | |
e13629bc | 579 | |
ebe1fac1 NC |
580 | free (b); |
581 | } | |
582 | } | |
583 | fclose (f); | |
584 | } | |
585 | ||
586 | initialized = TRUE; | |
587 | } | |
588 | ||
589 | if (ld_elf_hints == NULL) | |
590 | return FALSE; | |
591 | ||
592 | needed.by = NULL; | |
593 | needed.name = name; | |
594 | return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed, | |
e13629bc | 595 | force); |
ebe1fac1 NC |
596 | } |
597 | EOF | |
598 | # FreeBSD | |
599 | ;; | |
600 | ||
711c0baa | 601 | *-*-linux-* | *-*-k*bsd*-*) |
92b93329 | 602 | fragment <<EOF |
04925e1e AM |
603 | /* For a native linker, check the file /etc/ld.so.conf for directories |
604 | in which we may find shared libraries. /etc/ld.so.conf is really | |
482e8b32 | 605 | only meaningful on Linux. */ |
04925e1e | 606 | |
d3989512 | 607 | struct gld${EMULATION_NAME}_ld_so_conf |
04925e1e | 608 | { |
d3989512 JJ |
609 | char *path; |
610 | size_t len, alloc; | |
611 | }; | |
04925e1e | 612 | |
dfcffada | 613 | static bfd_boolean |
d3989512 JJ |
614 | gld${EMULATION_NAME}_parse_ld_so_conf |
615 | (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename); | |
616 | ||
617 | static void | |
618 | gld${EMULATION_NAME}_parse_ld_so_conf_include | |
619 | (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename, | |
620 | const char *pattern) | |
621 | { | |
622 | char *newp = NULL; | |
0b48acfe | 623 | #ifdef HAVE_GLOB |
d3989512 | 624 | glob_t gl; |
0b48acfe | 625 | #endif |
d3989512 JJ |
626 | |
627 | if (pattern[0] != '/') | |
04925e1e | 628 | { |
d3989512 JJ |
629 | char *p = strrchr (filename, '/'); |
630 | size_t patlen = strlen (pattern) + 1; | |
04925e1e | 631 | |
d3989512 JJ |
632 | newp = xmalloc (p - filename + 1 + patlen); |
633 | memcpy (newp, filename, p - filename + 1); | |
634 | memcpy (newp + (p - filename + 1), pattern, patlen); | |
635 | pattern = newp; | |
636 | } | |
04925e1e | 637 | |
0b48acfe | 638 | #ifdef HAVE_GLOB |
d3989512 JJ |
639 | if (glob (pattern, 0, NULL, &gl) == 0) |
640 | { | |
641 | size_t i; | |
642 | ||
643 | for (i = 0; i < gl.gl_pathc; ++i) | |
644 | gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]); | |
645 | globfree (&gl); | |
646 | } | |
0b48acfe MM |
647 | #else |
648 | /* If we do not have glob, treat the pattern as a literal filename. */ | |
649 | gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern); | |
650 | #endif | |
d3989512 JJ |
651 | |
652 | if (newp) | |
653 | free (newp); | |
654 | } | |
655 | ||
dfcffada | 656 | static bfd_boolean |
d3989512 JJ |
657 | gld${EMULATION_NAME}_parse_ld_so_conf |
658 | (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename) | |
659 | { | |
660 | FILE *f = fopen (filename, FOPEN_RT); | |
563f4125 JJ |
661 | char *line; |
662 | size_t linelen; | |
d3989512 JJ |
663 | |
664 | if (f == NULL) | |
dfcffada | 665 | return FALSE; |
d3989512 | 666 | |
563f4125 JJ |
667 | linelen = 256; |
668 | line = xmalloc (linelen); | |
669 | do | |
d3989512 | 670 | { |
563f4125 JJ |
671 | char *p = line, *q; |
672 | ||
673 | /* Normally this would use getline(3), but we need to be portable. */ | |
674 | while ((q = fgets (p, linelen - (p - line), f)) != NULL | |
675 | && strlen (q) == linelen - (p - line) - 1 | |
676 | && line[linelen - 2] != '\n') | |
677 | { | |
678 | line = xrealloc (line, 2 * linelen); | |
679 | p = line + linelen - 1; | |
680 | linelen += linelen; | |
681 | } | |
682 | ||
683 | if (q == NULL && p == line) | |
684 | break; | |
d3989512 JJ |
685 | |
686 | p = strchr (line, '\n'); | |
687 | if (p) | |
688 | *p = '\0'; | |
689 | ||
690 | /* Because the file format does not know any form of quoting we | |
691 | can search forward for the next '#' character and if found | |
692 | make it terminating the line. */ | |
693 | p = strchr (line, '#'); | |
694 | if (p) | |
695 | *p = '\0'; | |
696 | ||
697 | /* Remove leading whitespace. NUL is no whitespace character. */ | |
698 | p = line; | |
699 | while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v') | |
700 | ++p; | |
701 | ||
702 | /* If the line is blank it is ignored. */ | |
703 | if (p[0] == '\0') | |
704 | continue; | |
04925e1e | 705 | |
0112cd26 | 706 | if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t')) |
d3989512 JJ |
707 | { |
708 | char *dir, c; | |
709 | p += 8; | |
710 | do | |
04925e1e | 711 | { |
d3989512 JJ |
712 | while (*p == ' ' || *p == '\t') |
713 | ++p; | |
04925e1e | 714 | |
d3989512 JJ |
715 | if (*p == '\0') |
716 | break; | |
252b5132 | 717 | |
d3989512 JJ |
718 | dir = p; |
719 | ||
720 | while (*p != ' ' && *p != '\t' && *p) | |
721 | ++p; | |
722 | ||
723 | c = *p; | |
724 | *p++ = '\0'; | |
725 | if (dir[0] != '\0') | |
726 | gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename, | |
727 | dir); | |
728 | } | |
729 | while (c != '\0'); | |
730 | } | |
731 | else | |
732 | { | |
733 | char *dir = p; | |
734 | while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f' | |
735 | && *p != '\r' && *p != '\v') | |
736 | ++p; | |
737 | ||
738 | while (p != dir && p[-1] == '/') | |
739 | --p; | |
740 | if (info->path == NULL) | |
741 | { | |
742 | info->alloc = p - dir + 1 + 256; | |
743 | info->path = xmalloc (info->alloc); | |
744 | info->len = 0; | |
745 | } | |
04925e1e AM |
746 | else |
747 | { | |
d3989512 JJ |
748 | if (info->len + 1 + (p - dir) >= info->alloc) |
749 | { | |
750 | info->alloc += p - dir + 256; | |
751 | info->path = xrealloc (info->path, info->alloc); | |
752 | } | |
c76308d2 | 753 | info->path[info->len++] = config.rpath_separator; |
04925e1e | 754 | } |
d3989512 JJ |
755 | memcpy (info->path + info->len, dir, p - dir); |
756 | info->len += p - dir; | |
757 | info->path[info->len] = '\0'; | |
758 | } | |
759 | } | |
563f4125 | 760 | while (! feof (f)); |
d3989512 JJ |
761 | free (line); |
762 | fclose (f); | |
dfcffada | 763 | return TRUE; |
d3989512 | 764 | } |
252b5132 | 765 | |
d3989512 JJ |
766 | static bfd_boolean |
767 | gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force) | |
768 | { | |
769 | static bfd_boolean initialized; | |
770 | static char *ld_so_conf; | |
771 | struct dt_needed needed; | |
252b5132 | 772 | |
d3989512 JJ |
773 | if (! initialized) |
774 | { | |
775 | char *tmppath; | |
776 | struct gld${EMULATION_NAME}_ld_so_conf info; | |
9c8ebd6a | 777 | |
d3989512 JJ |
778 | info.path = NULL; |
779 | info.len = info.alloc = 0; | |
ff7a0acf AM |
780 | tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf", |
781 | (const char *) NULL); | |
dfcffada AM |
782 | if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath)) |
783 | { | |
784 | free (tmppath); | |
ff7a0acf AM |
785 | tmppath = concat (ld_sysroot, "/etc/ld.so.conf", |
786 | (const char *) NULL); | |
dfcffada AM |
787 | gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath); |
788 | } | |
d3989512 | 789 | free (tmppath); |
dfcffada | 790 | |
d3989512 JJ |
791 | if (info.path) |
792 | { | |
793 | char *d = gld${EMULATION_NAME}_add_sysroot (info.path); | |
794 | free (info.path); | |
795 | ld_so_conf = d; | |
04925e1e | 796 | } |
b34976b6 | 797 | initialized = TRUE; |
04925e1e | 798 | } |
49e56c49 | 799 | |
04925e1e | 800 | if (ld_so_conf == NULL) |
b34976b6 | 801 | return FALSE; |
252b5132 | 802 | |
e56f61be L |
803 | |
804 | needed.by = NULL; | |
805 | needed.name = name; | |
806 | return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force); | |
252b5132 RH |
807 | } |
808 | ||
04925e1e | 809 | EOF |
9c8ebd6a DJ |
810 | # Linux |
811 | ;; | |
04925e1e AM |
812 | esac |
813 | fi | |
92b93329 | 814 | fragment <<EOF |
04925e1e | 815 | |
252b5132 RH |
816 | /* See if an input file matches a DT_NEEDED entry by name. */ |
817 | ||
818 | static void | |
0c7a8e5a | 819 | gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s) |
252b5132 | 820 | { |
e13629bc AM |
821 | const char *soname; |
822 | ||
823 | /* Stop looking if we've found a loaded lib. */ | |
824 | if (global_found != NULL | |
825 | && (bfd_elf_get_dyn_lib_class (global_found->the_bfd) | |
826 | & DYN_AS_NEEDED) == 0) | |
252b5132 RH |
827 | return; |
828 | ||
e13629bc AM |
829 | if (s->filename == NULL || s->the_bfd == NULL) |
830 | return; | |
831 | ||
832 | /* Don't look for a second non-loaded as-needed lib. */ | |
833 | if (global_found != NULL | |
834 | && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0) | |
7cedef86 AM |
835 | return; |
836 | ||
e13629bc | 837 | if (strcmp (s->filename, global_needed->name) == 0) |
252b5132 | 838 | { |
e13629bc AM |
839 | global_found = s; |
840 | return; | |
841 | } | |
577a0623 | 842 | |
e13629bc AM |
843 | if (s->search_dirs_flag) |
844 | { | |
845 | const char *f = strrchr (s->filename, '/'); | |
846 | if (f != NULL | |
847 | && strcmp (f + 1, global_needed->name) == 0) | |
577a0623 | 848 | { |
e13629bc | 849 | global_found = s; |
577a0623 AM |
850 | return; |
851 | } | |
252b5132 RH |
852 | } |
853 | ||
e13629bc AM |
854 | soname = bfd_elf_get_dt_soname (s->the_bfd); |
855 | if (soname != NULL | |
856 | && strcmp (soname, global_needed->name) == 0) | |
252b5132 | 857 | { |
e13629bc AM |
858 | global_found = s; |
859 | return; | |
252b5132 | 860 | } |
252b5132 RH |
861 | } |
862 | ||
41392f03 AM |
863 | EOF |
864 | ||
865 | if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then | |
92b93329 | 866 | fragment <<EOF |
04925e1e | 867 | |
24382dca RM |
868 | static bfd_size_type |
869 | gld${EMULATION_NAME}_id_note_section_size (bfd *abfd, | |
870 | struct bfd_link_info *link_info) | |
871 | { | |
872 | const char *style = link_info->emit_note_gnu_build_id; | |
873 | bfd_size_type size; | |
874 | ||
875 | abfd = abfd; | |
876 | ||
877 | size = offsetof (Elf_External_Note, name[sizeof "GNU"]); | |
878 | size = (size + 3) & -(bfd_size_type) 4; | |
879 | ||
880 | if (!strcmp (style, "md5") || !strcmp (style, "uuid")) | |
881 | size += 128 / 8; | |
882 | else if (!strcmp (style, "sha1")) | |
883 | size += 160 / 8; | |
884 | else if (!strncmp (style, "0x", 2)) | |
885 | { | |
886 | /* ID is in string form (hex). Convert to bits. */ | |
887 | const char *id = style + 2; | |
888 | do | |
889 | { | |
890 | if (ISXDIGIT (id[0]) && ISXDIGIT (id[1])) | |
891 | { | |
892 | ++size; | |
893 | id += 2; | |
894 | } | |
895 | else if (*id == '-' || *id == ':') | |
896 | ++id; | |
897 | else | |
898 | { | |
899 | size = 0; | |
900 | break; | |
901 | } | |
902 | } while (*id != '\0'); | |
903 | } | |
904 | else | |
905 | size = 0; | |
906 | ||
907 | return size; | |
908 | } | |
909 | ||
910 | static unsigned char | |
911 | read_hex (const char xdigit) | |
912 | { | |
913 | if (ISDIGIT (xdigit)) | |
914 | return xdigit - '0'; | |
915 | if (ISUPPER (xdigit)) | |
916 | return xdigit - 'A' + 0xa; | |
917 | if (ISLOWER (xdigit)) | |
918 | return xdigit - 'a' + 0xa; | |
919 | abort (); | |
920 | return 0; | |
921 | } | |
922 | ||
923 | struct build_id_info | |
924 | { | |
925 | const char *style; | |
926 | asection *sec; | |
927 | }; | |
928 | ||
929 | static bfd_boolean | |
930 | gld${EMULATION_NAME}_write_build_id_section (bfd *abfd) | |
931 | { | |
932 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
933 | struct build_id_info *info = | |
934 | elf_tdata (abfd)->after_write_object_contents_info; | |
935 | asection *asec; | |
936 | Elf_Internal_Shdr *i_shdr; | |
937 | unsigned char *contents, *id_bits; | |
938 | bfd_size_type size; | |
939 | Elf_External_Note *e_note; | |
940 | ||
941 | asec = info->sec; | |
83e4970b | 942 | if (bfd_is_abs_section (asec->output_section)) |
24382dca | 943 | { |
83e4970b AM |
944 | einfo (_("%P: warning: .note.gnu.build-id section discarded," |
945 | " --build-id ignored.\n")); | |
946 | return TRUE; | |
24382dca RM |
947 | } |
948 | i_shdr = &elf_section_data (asec->output_section)->this_hdr; | |
949 | ||
950 | if (i_shdr->contents == NULL) | |
951 | { | |
b2ff8454 RM |
952 | if (asec->contents == NULL) |
953 | asec->contents = xmalloc (asec->size); | |
954 | contents = asec->contents; | |
24382dca | 955 | } |
b2ff8454 RM |
956 | else |
957 | contents = i_shdr->contents + asec->output_offset; | |
24382dca RM |
958 | |
959 | e_note = (void *) contents; | |
960 | size = offsetof (Elf_External_Note, name[sizeof "GNU"]); | |
961 | size = (size + 3) & -(bfd_size_type) 4; | |
962 | id_bits = contents + size; | |
963 | size = asec->size - size; | |
964 | ||
965 | bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz); | |
966 | bfd_h_put_32 (abfd, size, &e_note->descsz); | |
967 | bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type); | |
968 | memcpy (e_note->name, "GNU", sizeof "GNU"); | |
969 | ||
970 | if (!strcmp (info->style, "md5")) | |
971 | { | |
972 | struct md5_ctx ctx; | |
973 | md5_init_ctx (&ctx); | |
974 | if (bed->s->checksum_contents (abfd, | |
975 | (void (*) (const void *, size_t, void *)) | |
976 | &md5_process_bytes, | |
977 | &ctx)) | |
978 | md5_finish_ctx (&ctx, id_bits); | |
979 | else | |
980 | return FALSE; | |
981 | } | |
982 | else if (!strcmp (info->style, "sha1")) | |
983 | { | |
984 | struct sha1_ctx ctx; | |
985 | sha1_init_ctx (&ctx); | |
986 | if (bed->s->checksum_contents (abfd, | |
987 | (void (*) (const void *, size_t, void *)) | |
988 | &sha1_process_bytes, | |
989 | &ctx)) | |
990 | sha1_finish_ctx (&ctx, id_bits); | |
991 | else | |
992 | return FALSE; | |
993 | } | |
994 | else if (!strcmp (info->style, "uuid")) | |
995 | { | |
996 | int n; | |
997 | int fd = open ("/dev/urandom", O_RDONLY); | |
998 | if (fd < 0) | |
999 | return FALSE; | |
1000 | n = read (fd, id_bits, size); | |
1001 | close (fd); | |
1002 | if (n < (int) size) | |
1003 | return FALSE; | |
1004 | } | |
1005 | else if (!strncmp (info->style, "0x", 2)) | |
1006 | { | |
1007 | /* ID is in string form (hex). Convert to bits. */ | |
1008 | const char *id = info->style + 2; | |
1009 | size_t n = 0; | |
1010 | do | |
1011 | { | |
1012 | if (ISXDIGIT (id[0]) && ISXDIGIT (id[1])) | |
1013 | { | |
1014 | id_bits[n] = read_hex (*id++) << 4; | |
1015 | id_bits[n++] |= read_hex (*id++); | |
1016 | } | |
1017 | else if (*id == '-' || *id == ':') | |
1018 | ++id; | |
1019 | else | |
1020 | abort (); /* Should have been validated earlier. */ | |
1021 | } while (*id != '\0'); | |
1022 | } | |
1023 | else | |
1024 | abort (); /* Should have been validated earlier. */ | |
1025 | ||
b2ff8454 RM |
1026 | size = asec->size; |
1027 | return (bfd_seek (abfd, | |
1028 | i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0 | |
1029 | && bfd_bwrite (contents, size, abfd) == size); | |
24382dca RM |
1030 | } |
1031 | ||
1032 | ||
04925e1e | 1033 | /* This is called after all the input files have been opened. */ |
252b5132 RH |
1034 | |
1035 | static void | |
0c7a8e5a | 1036 | gld${EMULATION_NAME}_after_open (void) |
252b5132 | 1037 | { |
04925e1e | 1038 | struct bfd_link_needed_list *needed, *l; |
d10e7fcc AM |
1039 | struct elf_link_hash_table *htab; |
1040 | ||
1041 | htab = elf_hash_table (&link_info); | |
1042 | if (!is_elf_hash_table (htab)) | |
1043 | return; | |
252b5132 | 1044 | |
c0065db7 RM |
1045 | if (link_info.emit_note_gnu_build_id) |
1046 | { | |
1047 | bfd *abfd; | |
1048 | asection *s; | |
1049 | bfd_size_type size; | |
1050 | ||
1051 | abfd = link_info.input_bfds; | |
1052 | ||
24382dca | 1053 | size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info); |
c0065db7 RM |
1054 | if (size == 0) |
1055 | { | |
1056 | einfo ("%P: warning: unrecognized --build-id style ignored.\n"); | |
1057 | free (link_info.emit_note_gnu_build_id); | |
1058 | link_info.emit_note_gnu_build_id = NULL; | |
1059 | } | |
1060 | else | |
1061 | { | |
1062 | s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id", | |
1063 | SEC_ALLOC | SEC_LOAD | |
1064 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
1065 | | SEC_READONLY | SEC_DATA); | |
1066 | if (s != NULL && bfd_set_section_alignment (abfd, s, 2)) | |
1067 | { | |
f13a99db | 1068 | struct elf_obj_tdata *t = elf_tdata (link_info.output_bfd); |
24382dca RM |
1069 | struct build_id_info *b = xmalloc (sizeof *b); |
1070 | b->style = link_info.emit_note_gnu_build_id; | |
1071 | b->sec = s; | |
c0065db7 RM |
1072 | elf_section_type (s) = SHT_NOTE; |
1073 | s->size = size; | |
24382dca RM |
1074 | t->after_write_object_contents |
1075 | = &gld${EMULATION_NAME}_write_build_id_section; | |
1076 | t->after_write_object_contents_info = b; | |
c0065db7 RM |
1077 | } |
1078 | else | |
1079 | { | |
1080 | einfo ("%P: warning: Cannot create .note.gnu.build-id section," | |
1081 | " --build-id ignored.\n"); | |
1082 | free (link_info.emit_note_gnu_build_id); | |
1083 | link_info.emit_note_gnu_build_id = NULL; | |
1084 | } | |
1085 | } | |
1086 | } | |
1087 | ||
d10e7fcc AM |
1088 | if (link_info.relocatable) |
1089 | return; | |
1090 | ||
eb3d5f3b | 1091 | if (link_info.eh_frame_hdr |
d10e7fcc | 1092 | && !link_info.traditional_format) |
eb3d5f3b | 1093 | { |
d10e7fcc AM |
1094 | bfd *abfd; |
1095 | asection *s; | |
eb3d5f3b | 1096 | |
d10e7fcc | 1097 | for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next) |
eb3d5f3b | 1098 | { |
d10e7fcc AM |
1099 | s = bfd_get_section_by_name (abfd, ".eh_frame"); |
1100 | if (s && s->size > 8 && !bfd_is_abs_section (s->output_section)) | |
1101 | break; | |
1102 | } | |
1103 | if (abfd) | |
1104 | { | |
1105 | const struct elf_backend_data *bed; | |
1106 | ||
1107 | bed = get_elf_backend_data (abfd); | |
1108 | s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr", | |
1109 | bed->dynamic_sec_flags | |
1110 | | SEC_READONLY); | |
1111 | if (s != NULL | |
1112 | && bfd_set_section_alignment (abfd, s, 2)) | |
1113 | htab->eh_info.hdr_sec = s; | |
1114 | else | |
1115 | einfo ("%P: warning: Cannot create .eh_frame_hdr section," | |
1116 | " --eh-frame-hdr ignored.\n"); | |
eb3d5f3b JB |
1117 | } |
1118 | } | |
1119 | ||
04925e1e AM |
1120 | /* Get the list of files which appear in DT_NEEDED entries in |
1121 | dynamic objects included in the link (often there will be none). | |
1122 | For each such file, we want to track down the corresponding | |
1123 | library, and include the symbol table in the link. This is what | |
1124 | the runtime dynamic linker will do. Tracking the files down here | |
1125 | permits one dynamic object to include another without requiring | |
1126 | special action by the person doing the link. Note that the | |
1127 | needed list can actually grow while we are stepping through this | |
1128 | loop. */ | |
d10e7fcc AM |
1129 | if (!link_info.executable) |
1130 | return; | |
f13a99db | 1131 | needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info); |
04925e1e | 1132 | for (l = needed; l != NULL; l = l->next) |
252b5132 | 1133 | { |
04925e1e | 1134 | struct bfd_link_needed_list *ll; |
e56f61be | 1135 | struct dt_needed n, nn; |
04925e1e | 1136 | int force; |
252b5132 | 1137 | |
7e9f0867 AM |
1138 | /* If the lib that needs this one was --as-needed and wasn't |
1139 | found to be needed, then this lib isn't needed either. */ | |
1140 | if (l->by != NULL | |
1141 | && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0) | |
1142 | continue; | |
1143 | ||
04925e1e AM |
1144 | /* If we've already seen this file, skip it. */ |
1145 | for (ll = needed; ll != l; ll = ll->next) | |
7e9f0867 AM |
1146 | if ((ll->by == NULL |
1147 | || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0) | |
1148 | && strcmp (ll->name, l->name) == 0) | |
04925e1e AM |
1149 | break; |
1150 | if (ll != l) | |
1151 | continue; | |
252b5132 | 1152 | |
04925e1e AM |
1153 | /* See if this file was included in the link explicitly. */ |
1154 | global_needed = l; | |
e13629bc | 1155 | global_found = NULL; |
04925e1e | 1156 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); |
e13629bc AM |
1157 | if (global_found != NULL |
1158 | && (bfd_elf_get_dyn_lib_class (global_found->the_bfd) | |
1159 | & DYN_AS_NEEDED) == 0) | |
04925e1e | 1160 | continue; |
252b5132 | 1161 | |
e56f61be L |
1162 | n.by = l->by; |
1163 | n.name = l->name; | |
1164 | nn.by = l->by; | |
ec4eb78a L |
1165 | if (trace_file_tries) |
1166 | info_msg (_("%s needed by %B\n"), l->name, l->by); | |
1167 | ||
e13629bc AM |
1168 | /* As-needed libs specified on the command line (or linker script) |
1169 | take priority over libs found in search dirs. */ | |
1170 | if (global_found != NULL) | |
1171 | { | |
1172 | nn.name = global_found->filename; | |
1173 | if (gld${EMULATION_NAME}_try_needed (&nn, TRUE)) | |
1174 | continue; | |
1175 | } | |
1176 | ||
04925e1e AM |
1177 | /* We need to find this file and include the symbol table. We |
1178 | want to search for the file in the same way that the dynamic | |
1179 | linker will search. That means that we want to use | |
1180 | rpath_link, rpath, then the environment variable | |
ec4eb78a L |
1181 | LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH |
1182 | entries (native only), then the linker script LIB_SEARCH_DIRS. | |
1183 | We do not search using the -L arguments. | |
252b5132 | 1184 | |
04925e1e AM |
1185 | We search twice. The first time, we skip objects which may |
1186 | introduce version mismatches. The second time, we force | |
1187 | their use. See gld${EMULATION_NAME}_vercheck comment. */ | |
1188 | for (force = 0; force < 2; force++) | |
1189 | { | |
04925e1e AM |
1190 | size_t len; |
1191 | search_dirs_type *search; | |
6dd8c765 | 1192 | EOF |
ff925e69 | 1193 | if [ "x${NATIVE}" = xyes ] ; then |
92b93329 | 1194 | fragment <<EOF |
dcb0bd0e | 1195 | const char *lib_path; |
ff925e69 KK |
1196 | EOF |
1197 | fi | |
1198 | if [ "x${USE_LIBPATH}" = xyes ] ; then | |
92b93329 | 1199 | fragment <<EOF |
6dd8c765 L |
1200 | struct bfd_link_needed_list *rp; |
1201 | int found; | |
1202 | EOF | |
6dd8c765 | 1203 | fi |
92b93329 | 1204 | fragment <<EOF |
252b5132 | 1205 | |
04925e1e | 1206 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, |
e56f61be | 1207 | &n, force)) |
04925e1e | 1208 | break; |
dcb0bd0e | 1209 | EOF |
9c8ebd6a | 1210 | if [ "x${USE_LIBPATH}" = xyes ] ; then |
92b93329 | 1211 | fragment <<EOF |
04925e1e | 1212 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, |
e56f61be | 1213 | &n, force)) |
04925e1e | 1214 | break; |
9c8ebd6a DJ |
1215 | EOF |
1216 | fi | |
1217 | if [ "x${NATIVE}" = xyes ] ; then | |
92b93329 | 1218 | fragment <<EOF |
04925e1e AM |
1219 | if (command_line.rpath_link == NULL |
1220 | && command_line.rpath == NULL) | |
1221 | { | |
1222 | lib_path = (const char *) getenv ("LD_RUN_PATH"); | |
e56f61be | 1223 | if (gld${EMULATION_NAME}_search_needed (lib_path, &n, |
04925e1e AM |
1224 | force)) |
1225 | break; | |
1226 | } | |
04925e1e | 1227 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); |
e56f61be | 1228 | if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force)) |
04925e1e | 1229 | break; |
9c8ebd6a DJ |
1230 | EOF |
1231 | fi | |
1232 | if [ "x${USE_LIBPATH}" = xyes ] ; then | |
92b93329 | 1233 | fragment <<EOF |
ec4eb78a | 1234 | found = 0; |
f13a99db | 1235 | rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info); |
6dd8c765 | 1236 | for (; !found && rp != NULL; rp = rp->next) |
ec4eb78a | 1237 | { |
9c8ebd6a | 1238 | char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name); |
ec4eb78a | 1239 | found = (rp->by == l->by |
9c8ebd6a | 1240 | && gld${EMULATION_NAME}_search_needed (tmpname, |
e56f61be | 1241 | &n, |
ec4eb78a | 1242 | force)); |
9c8ebd6a | 1243 | free (tmpname); |
ec4eb78a L |
1244 | } |
1245 | if (found) | |
1246 | break; | |
1247 | ||
04925e1e | 1248 | EOF |
04925e1e | 1249 | fi |
c1446dba L |
1250 | if [ "x${USE_LIBPATH}" = xyes ] ; then |
1251 | case ${target} in | |
ebe1fac1 | 1252 | *-*-freebsd* | *-*-dragonfly*) |
92b93329 | 1253 | fragment <<EOF |
ebe1fac1 NC |
1254 | if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force)) |
1255 | break; | |
1256 | EOF | |
1257 | # FreeBSD | |
1258 | ;; | |
1259 | ||
c1446dba L |
1260 | *-*-linux-* | *-*-k*bsd*-*) |
1261 | # Linux | |
92b93329 | 1262 | fragment <<EOF |
c1446dba L |
1263 | if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force)) |
1264 | break; | |
1265 | ||
1266 | EOF | |
1267 | ;; | |
1268 | esac | |
1269 | fi | |
92b93329 | 1270 | fragment <<EOF |
04925e1e AM |
1271 | len = strlen (l->name); |
1272 | for (search = search_head; search != NULL; search = search->next) | |
1273 | { | |
1274 | char *filename; | |
252b5132 | 1275 | |
04925e1e AM |
1276 | if (search->cmdline) |
1277 | continue; | |
1278 | filename = (char *) xmalloc (strlen (search->name) + len + 2); | |
1279 | sprintf (filename, "%s/%s", search->name, l->name); | |
e56f61be L |
1280 | nn.name = filename; |
1281 | if (gld${EMULATION_NAME}_try_needed (&nn, force)) | |
04925e1e AM |
1282 | break; |
1283 | free (filename); | |
1284 | } | |
1285 | if (search != NULL) | |
1286 | break; | |
1287 | EOF | |
92b93329 | 1288 | fragment <<EOF |
04925e1e | 1289 | } |
252b5132 | 1290 | |
04925e1e AM |
1291 | if (force < 2) |
1292 | continue; | |
252b5132 | 1293 | |
e374f1d9 | 1294 | einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n", |
04925e1e AM |
1295 | l->name, l->by); |
1296 | } | |
1297 | } | |
252b5132 | 1298 | |
41392f03 AM |
1299 | EOF |
1300 | fi | |
1301 | ||
92b93329 | 1302 | fragment <<EOF |
252b5132 | 1303 | |
04925e1e | 1304 | /* Look through an expression for an assignment statement. */ |
252b5132 | 1305 | |
04925e1e | 1306 | static void |
0c7a8e5a | 1307 | gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp) |
04925e1e | 1308 | { |
4ea42fb7 | 1309 | bfd_boolean provide = FALSE; |
04925e1e AM |
1310 | |
1311 | switch (exp->type.node_class) | |
252b5132 | 1312 | { |
04925e1e | 1313 | case etree_provide: |
4ea42fb7 AM |
1314 | provide = TRUE; |
1315 | /* Fall thru */ | |
1316 | case etree_assign: | |
04925e1e AM |
1317 | /* We call record_link_assignment even if the symbol is defined. |
1318 | This is because if it is defined by a dynamic object, we | |
1319 | actually want to use the value defined by the linker script, | |
1320 | not the value from the dynamic object (because we are setting | |
1321 | symbols like etext). If the symbol is defined by a regular | |
1322 | object, then, as it happens, calling record_link_assignment | |
1323 | will do no harm. */ | |
04925e1e | 1324 | if (strcmp (exp->assign.dst, ".") != 0) |
252b5132 | 1325 | { |
f13a99db AM |
1326 | if (!bfd_elf_record_link_assignment (link_info.output_bfd, |
1327 | &link_info, | |
fe21a8fc L |
1328 | exp->assign.dst, provide, |
1329 | exp->assign.hidden)) | |
04925e1e AM |
1330 | einfo ("%P%F: failed to record assignment to %s: %E\n", |
1331 | exp->assign.dst); | |
252b5132 | 1332 | } |
04925e1e AM |
1333 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); |
1334 | break; | |
252b5132 | 1335 | |
04925e1e AM |
1336 | case etree_binary: |
1337 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
1338 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
1339 | break; | |
252b5132 | 1340 | |
04925e1e AM |
1341 | case etree_trinary: |
1342 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
1343 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
1344 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
1345 | break; | |
252b5132 | 1346 | |
04925e1e AM |
1347 | case etree_unary: |
1348 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
1349 | break; | |
252b5132 | 1350 | |
04925e1e AM |
1351 | default: |
1352 | break; | |
252b5132 RH |
1353 | } |
1354 | } | |
1355 | ||
04925e1e AM |
1356 | |
1357 | /* This is called by the before_allocation routine via | |
1358 | lang_for_each_statement. It locates any assignment statements, and | |
1359 | tells the ELF backend about them, in case they are assignments to | |
1360 | symbols which are referred to by dynamic objects. */ | |
1361 | ||
1362 | static void | |
0c7a8e5a | 1363 | gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s) |
04925e1e AM |
1364 | { |
1365 | if (s->header.type == lang_assignment_statement_enum) | |
1366 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
1367 | } | |
1368 | ||
41392f03 AM |
1369 | EOF |
1370 | ||
1371 | if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then | |
57e6abd2 AO |
1372 | if test x"${ELF_INTERPRETER_NAME+set}" = xset; then |
1373 | ELF_INTERPRETER_SET_DEFAULT=" | |
1374 | if (sinterp != NULL) | |
1375 | { | |
5718918d AM |
1376 | sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME}; |
1377 | sinterp->size = strlen ((char *) sinterp->contents) + 1; | |
57e6abd2 AO |
1378 | } |
1379 | ||
1380 | " | |
1381 | else | |
1382 | ELF_INTERPRETER_SET_DEFAULT= | |
1383 | fi | |
92b93329 | 1384 | fragment <<EOF |
04925e1e | 1385 | |
252b5132 RH |
1386 | /* This is called after the sections have been attached to output |
1387 | sections, but before any sizes or addresses have been set. */ | |
1388 | ||
1389 | static void | |
0c7a8e5a | 1390 | gld${EMULATION_NAME}_before_allocation (void) |
252b5132 RH |
1391 | { |
1392 | const char *rpath; | |
1393 | asection *sinterp; | |
1394 | ||
fd574c46 | 1395 | if (link_info.hash->type == bfd_link_elf_hash_table) |
f13a99db | 1396 | _bfd_elf_tls_setup (link_info.output_bfd, &link_info); |
e1918d23 | 1397 | |
252b5132 RH |
1398 | /* If we are going to make any variable assignments, we need to let |
1399 | the ELF backend know about them in case the variables are | |
1400 | referred to by dynamic objects. */ | |
1401 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
1402 | ||
1403 | /* Let the ELF backend work out the sizes of any sections required | |
1404 | by dynamic linking. */ | |
1405 | rpath = command_line.rpath; | |
1406 | if (rpath == NULL) | |
1407 | rpath = (const char *) getenv ("LD_RUN_PATH"); | |
5a580b3a | 1408 | if (! (bfd_elf_size_dynamic_sections |
f13a99db | 1409 | (link_info.output_bfd, command_line.soname, rpath, |
605d9b3a | 1410 | command_line.filter_shlib, |
252b5132 RH |
1411 | (const char * const *) command_line.auxiliary_filters, |
1412 | &link_info, &sinterp, lang_elf_version_info))) | |
1413 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
8423293d | 1414 | |
57e6abd2 | 1415 | ${ELF_INTERPRETER_SET_DEFAULT} |
252b5132 RH |
1416 | /* Let the user override the dynamic linker we are using. */ |
1417 | if (command_line.interpreter != NULL | |
1418 | && sinterp != NULL) | |
1419 | { | |
1420 | sinterp->contents = (bfd_byte *) command_line.interpreter; | |
eea6121a | 1421 | sinterp->size = strlen (command_line.interpreter) + 1; |
252b5132 RH |
1422 | } |
1423 | ||
1424 | /* Look for any sections named .gnu.warning. As a GNU extensions, | |
1425 | we treat such sections as containing warning messages. We print | |
1426 | out the warning message, and then zero out the section size so | |
1427 | that it does not get copied into the output file. */ | |
1428 | ||
1429 | { | |
1430 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
1431 | { | |
1432 | asection *s; | |
1433 | bfd_size_type sz; | |
1434 | char *msg; | |
b34976b6 | 1435 | bfd_boolean ret; |
252b5132 RH |
1436 | |
1437 | if (is->just_syms_flag) | |
1438 | continue; | |
1439 | ||
1440 | s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning"); | |
1441 | if (s == NULL) | |
1442 | continue; | |
1443 | ||
eea6121a | 1444 | sz = s->size; |
bc251d50 VP |
1445 | msg = xmalloc ((size_t) (sz + 1)); |
1446 | if (! bfd_get_section_contents (is->the_bfd, s, msg, | |
8c675694 | 1447 | (file_ptr) 0, sz)) |
252b5132 RH |
1448 | einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n", |
1449 | is->the_bfd); | |
bc251d50 | 1450 | msg[sz] = '\0'; |
252b5132 RH |
1451 | ret = link_info.callbacks->warning (&link_info, msg, |
1452 | (const char *) NULL, | |
1453 | is->the_bfd, (asection *) NULL, | |
1454 | (bfd_vma) 0); | |
1455 | ASSERT (ret); | |
1456 | free (msg); | |
1457 | ||
9e3be61d AM |
1458 | /* Clobber the section size, so that we don't waste space |
1459 | copying the warning into the output file. If we've already | |
1460 | sized the output section, adjust its size. The adjustment | |
1461 | is on rawsize because targets that size sections early will | |
1462 | have called lang_reset_memory_regions after sizing. */ | |
1463 | if (s->output_section != NULL | |
1464 | && s->output_section->rawsize >= s->size) | |
1465 | s->output_section->rawsize -= s->size; | |
1466 | ||
eea6121a | 1467 | s->size = 0; |
11d2f718 | 1468 | |
9e3be61d AM |
1469 | /* Also set SEC_EXCLUDE, so that local symbols defined in the |
1470 | warning section don't get copied to the output. */ | |
a14a5de3 | 1471 | s->flags |= SEC_EXCLUDE | SEC_KEEP; |
252b5132 RH |
1472 | } |
1473 | } | |
8423293d | 1474 | |
1e035701 | 1475 | before_allocation_default (); |
8423293d | 1476 | |
f13a99db | 1477 | if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info)) |
8423293d | 1478 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); |
252b5132 RH |
1479 | } |
1480 | ||
41392f03 AM |
1481 | EOF |
1482 | fi | |
1483 | ||
1484 | if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then | |
92b93329 | 1485 | fragment <<EOF |
252b5132 | 1486 | |
04925e1e AM |
1487 | /* Try to open a dynamic archive. This is where we know that ELF |
1488 | dynamic libraries have an extension of .so (or .sl on oddball systems | |
1489 | like hpux). */ | |
1490 | ||
b34976b6 | 1491 | static bfd_boolean |
0c7a8e5a AM |
1492 | gld${EMULATION_NAME}_open_dynamic_archive |
1493 | (const char *arch, search_dirs_type *search, lang_input_statement_type *entry) | |
252b5132 | 1494 | { |
04925e1e AM |
1495 | const char *filename; |
1496 | char *string; | |
252b5132 | 1497 | |
04925e1e | 1498 | if (! entry->is_archive) |
b34976b6 | 1499 | return FALSE; |
252b5132 | 1500 | |
04925e1e | 1501 | filename = entry->filename; |
252b5132 | 1502 | |
04925e1e AM |
1503 | /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION |
1504 | is defined, but it does not seem worth the headache to optimize | |
1505 | away those two bytes of space. */ | |
1506 | string = (char *) xmalloc (strlen (search->name) | |
1507 | + strlen (filename) | |
1508 | + strlen (arch) | |
1509 | #ifdef EXTRA_SHLIB_EXTENSION | |
1510 | + strlen (EXTRA_SHLIB_EXTENSION) | |
1511 | #endif | |
1512 | + sizeof "/lib.so"); | |
1513 | ||
1514 | sprintf (string, "%s/lib%s%s.so", search->name, filename, arch); | |
1515 | ||
1516 | #ifdef EXTRA_SHLIB_EXTENSION | |
1517 | /* Try the .so extension first. If that fails build a new filename | |
1518 | using EXTRA_SHLIB_EXTENSION. */ | |
1519 | if (! ldfile_try_open_bfd (string, entry)) | |
a26cc967 AM |
1520 | { |
1521 | sprintf (string, "%s/lib%s%s%s", search->name, | |
1522 | filename, arch, EXTRA_SHLIB_EXTENSION); | |
04925e1e AM |
1523 | #endif |
1524 | ||
1525 | if (! ldfile_try_open_bfd (string, entry)) | |
252b5132 | 1526 | { |
04925e1e | 1527 | free (string); |
b34976b6 | 1528 | return FALSE; |
04925e1e | 1529 | } |
a26cc967 AM |
1530 | #ifdef EXTRA_SHLIB_EXTENSION |
1531 | } | |
1532 | #endif | |
252b5132 | 1533 | |
04925e1e | 1534 | entry->filename = string; |
252b5132 | 1535 | |
04925e1e AM |
1536 | /* We have found a dynamic object to include in the link. The ELF |
1537 | backend linker will create a DT_NEEDED entry in the .dynamic | |
1538 | section naming this file. If this file includes a DT_SONAME | |
1539 | entry, it will be used. Otherwise, the ELF linker will just use | |
1540 | the name of the file. For an archive found by searching, like | |
1541 | this one, the DT_NEEDED entry should consist of just the name of | |
1542 | the file, without the path information used to find it. Note | |
1543 | that we only need to do this if we have a dynamic object; an | |
1544 | archive will never be referenced by a DT_NEEDED entry. | |
252b5132 | 1545 | |
04925e1e AM |
1546 | FIXME: This approach--using bfd_elf_set_dt_needed_name--is not |
1547 | very pretty. I haven't been able to think of anything that is | |
1548 | pretty, though. */ | |
1549 | if (bfd_check_format (entry->the_bfd, bfd_object) | |
1550 | && (entry->the_bfd->flags & DYNAMIC) != 0) | |
1551 | { | |
04925e1e | 1552 | ASSERT (entry->is_archive && entry->search_dirs_flag); |
252b5132 | 1553 | |
04925e1e | 1554 | /* Rather than duplicating the logic above. Just use the |
1c9acd94 | 1555 | filename we recorded earlier. */ |
04925e1e | 1556 | |
fed2999d | 1557 | filename = lbasename (entry->filename); |
1c9acd94 | 1558 | bfd_elf_set_dt_needed_name (entry->the_bfd, filename); |
04925e1e AM |
1559 | } |
1560 | ||
b34976b6 | 1561 | return TRUE; |
04925e1e AM |
1562 | } |
1563 | ||
41392f03 AM |
1564 | EOF |
1565 | fi | |
cde43e70 AM |
1566 | |
1567 | if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then | |
92b93329 | 1568 | fragment <<EOF |
41392f03 | 1569 | |
afd7a018 | 1570 | /* A variant of lang_output_section_find used by place_orphan. */ |
04925e1e | 1571 | |
04925e1e | 1572 | static lang_output_section_statement_type * |
2a36a117 | 1573 | output_rel_find (asection *sec, int isdyn) |
04925e1e | 1574 | { |
04925e1e | 1575 | lang_output_section_statement_type *lookup; |
ba493122 | 1576 | lang_output_section_statement_type *last = NULL; |
2a36a117 | 1577 | lang_output_section_statement_type *last_alloc = NULL; |
48f2ff54 | 1578 | lang_output_section_statement_type *last_ro_alloc = NULL; |
ba493122 AM |
1579 | lang_output_section_statement_type *last_rel = NULL; |
1580 | lang_output_section_statement_type *last_rel_alloc = NULL; | |
24cdb50a | 1581 | int rela = sec->name[4] == 'a'; |
04925e1e | 1582 | |
afd7a018 AM |
1583 | for (lookup = &lang_output_section_statement.head->output_section_statement; |
1584 | lookup != NULL; | |
1585 | lookup = lookup->next) | |
04925e1e | 1586 | { |
66c103b7 | 1587 | if (lookup->constraint >= 0 |
0112cd26 | 1588 | && CONST_STRNEQ (lookup->name, ".rel")) |
04925e1e | 1589 | { |
24cdb50a | 1590 | int lookrela = lookup->name[4] == 'a'; |
ba493122 | 1591 | |
2a36a117 AM |
1592 | /* .rel.dyn must come before all other reloc sections, to suit |
1593 | GNU ld.so. */ | |
1594 | if (isdyn) | |
1595 | break; | |
1596 | ||
1597 | /* Don't place after .rel.plt as doing so results in wrong | |
1598 | dynamic tags. */ | |
1599 | if (strcmp (".plt", lookup->name + 4 + lookrela) == 0) | |
ba493122 | 1600 | break; |
2a36a117 AM |
1601 | |
1602 | if (rela == lookrela || last_rel == NULL) | |
24cdb50a | 1603 | last_rel = lookup; |
2a36a117 AM |
1604 | if ((rela == lookrela || last_rel_alloc == NULL) |
1605 | && lookup->bfd_section != NULL | |
ba493122 AM |
1606 | && (lookup->bfd_section->flags & SEC_ALLOC) != 0) |
1607 | last_rel_alloc = lookup; | |
04925e1e | 1608 | } |
2a36a117 AM |
1609 | |
1610 | last = lookup; | |
1611 | if (lookup->bfd_section != NULL | |
1612 | && (lookup->bfd_section->flags & SEC_ALLOC) != 0) | |
48f2ff54 AM |
1613 | { |
1614 | last_alloc = lookup; | |
1615 | if ((lookup->bfd_section->flags & SEC_READONLY) != 0) | |
1616 | last_ro_alloc = lookup; | |
1617 | } | |
252b5132 | 1618 | } |
ba493122 AM |
1619 | |
1620 | if (last_rel_alloc) | |
1621 | return last_rel_alloc; | |
1622 | ||
1623 | if (last_rel) | |
1624 | return last_rel; | |
1625 | ||
48f2ff54 AM |
1626 | if (last_ro_alloc) |
1627 | return last_ro_alloc; | |
1628 | ||
2a36a117 AM |
1629 | if (last_alloc) |
1630 | return last_alloc; | |
1631 | ||
ba493122 | 1632 | return last; |
252b5132 RH |
1633 | } |
1634 | ||
1635 | /* Place an orphan section. We use this to put random SHF_ALLOC | |
1636 | sections in the right segment. */ | |
1637 | ||
c2edb4b8 | 1638 | static lang_output_section_statement_type * |
8a99a385 AM |
1639 | gld${EMULATION_NAME}_place_orphan (asection *s, |
1640 | const char *secname, | |
1641 | int constraint) | |
252b5132 | 1642 | { |
afd7a018 AM |
1643 | static struct orphan_save hold[] = |
1644 | { | |
1645 | { ".text", | |
1646 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, | |
1647 | 0, 0, 0, 0 }, | |
1648 | { ".rodata", | |
1649 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, | |
1650 | 0, 0, 0, 0 }, | |
1651 | { ".data", | |
1652 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, | |
1653 | 0, 0, 0, 0 }, | |
1654 | { ".bss", | |
1655 | SEC_ALLOC, | |
1656 | 0, 0, 0, 0 }, | |
1657 | { 0, | |
1658 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, | |
1659 | 0, 0, 0, 0 }, | |
1660 | { ".interp", | |
1661 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, | |
1662 | 0, 0, 0, 0 }, | |
1663 | { ".sdata", | |
1664 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA, | |
07890c07 AM |
1665 | 0, 0, 0, 0 }, |
1666 | { 0, | |
1667 | SEC_HAS_CONTENTS, | |
1668 | 0, 0, 0, 0 }, | |
afd7a018 AM |
1669 | }; |
1670 | enum orphan_save_index | |
1671 | { | |
1672 | orphan_text = 0, | |
1673 | orphan_rodata, | |
1674 | orphan_data, | |
1675 | orphan_bss, | |
1676 | orphan_rel, | |
1677 | orphan_interp, | |
07890c07 AM |
1678 | orphan_sdata, |
1679 | orphan_nonalloc | |
afd7a018 AM |
1680 | }; |
1681 | static int orphan_init_done = 0; | |
6a345e87 | 1682 | struct orphan_save *place; |
afd7a018 | 1683 | lang_output_section_statement_type *after; |
252b5132 | 1684 | lang_output_section_statement_type *os; |
24cdb50a | 1685 | int isdyn = 0; |
ecca9871 L |
1686 | int iself = s->owner->xvec->flavour == bfd_target_elf_flavour; |
1687 | unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL; | |
252b5132 | 1688 | |
1049f94e | 1689 | if (! link_info.relocatable |
24cdb50a | 1690 | && link_info.combreloc |
ecca9871 | 1691 | && (s->flags & SEC_ALLOC)) |
24cdb50a | 1692 | { |
ecca9871 L |
1693 | if (iself) |
1694 | switch (sh_type) | |
1695 | { | |
1696 | case SHT_RELA: | |
1697 | secname = ".rela.dyn"; | |
1698 | isdyn = 1; | |
1699 | break; | |
1700 | case SHT_REL: | |
1701 | secname = ".rel.dyn"; | |
1702 | isdyn = 1; | |
1703 | break; | |
1704 | default: | |
1705 | break; | |
1706 | } | |
0112cd26 | 1707 | else if (CONST_STRNEQ (secname, ".rel")) |
ecca9871 L |
1708 | { |
1709 | secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn"; | |
1710 | isdyn = 1; | |
1711 | } | |
24cdb50a | 1712 | } |
aea4bd9d | 1713 | |
bcacc0f5 | 1714 | /* Look through the script to see where to place this section. */ |
8a99a385 AM |
1715 | if (constraint == 0 |
1716 | && (os = lang_output_section_find (secname)) != NULL | |
bcacc0f5 AM |
1717 | && os->bfd_section != NULL |
1718 | && (os->bfd_section->flags == 0 | |
1719 | || (_bfd_elf_match_sections_by_type (link_info.output_bfd, | |
1720 | os->bfd_section, s->owner, s) | |
1721 | && ((s->flags ^ os->bfd_section->flags) | |
1722 | & (SEC_LOAD | SEC_ALLOC)) == 0))) | |
252b5132 | 1723 | { |
bcacc0f5 AM |
1724 | /* We already have an output section statement with this |
1725 | name, and its bfd section has compatible flags. | |
1726 | If the section already exists but does not have any flags | |
1727 | set, then it has been created by the linker, probably as a | |
1728 | result of a --section-start command line switch. */ | |
1729 | lang_add_section (&os->children, s, os); | |
c2edb4b8 | 1730 | return os; |
252b5132 RH |
1731 | } |
1732 | ||
afd7a018 AM |
1733 | if (!orphan_init_done) |
1734 | { | |
07890c07 | 1735 | lang_output_section_statement_type *lookup; |
afd7a018 | 1736 | struct orphan_save *ho; |
07890c07 | 1737 | |
afd7a018 AM |
1738 | for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) |
1739 | if (ho->name != NULL) | |
1740 | { | |
1741 | ho->os = lang_output_section_find (ho->name); | |
1742 | if (ho->os != NULL && ho->os->flags == 0) | |
1743 | ho->os->flags = ho->flags; | |
1744 | } | |
07890c07 AM |
1745 | lookup = hold[orphan_bss].os; |
1746 | if (lookup == NULL) | |
1747 | lookup = &lang_output_section_statement.head->output_section_statement; | |
1748 | for (; lookup != NULL; lookup = lookup->next) | |
1749 | if ((lookup->bfd_section != NULL | |
1750 | && (lookup->bfd_section->flags & SEC_DEBUGGING) != 0) | |
1751 | || strcmp (lookup->name, ".comment") == 0) | |
1752 | break; | |
1753 | hold[orphan_nonalloc].os = lookup ? lookup->prev : NULL; | |
1754 | hold[orphan_nonalloc].name = ".comment"; | |
afd7a018 AM |
1755 | orphan_init_done = 1; |
1756 | } | |
252b5132 RH |
1757 | |
1758 | /* If this is a final link, then always put .gnu.warning.SYMBOL | |
1759 | sections into the .text section to get them out of the way. */ | |
36af4a4e | 1760 | if (link_info.executable |
1049f94e | 1761 | && ! link_info.relocatable |
bcacc0f5 | 1762 | && CONST_STRNEQ (s->name, ".gnu.warning.") |
afd7a018 | 1763 | && hold[orphan_text].os != NULL) |
252b5132 | 1764 | { |
c2edb4b8 AM |
1765 | os = hold[orphan_text].os; |
1766 | lang_add_section (&os->children, s, os); | |
1767 | return os; | |
252b5132 RH |
1768 | } |
1769 | ||
1770 | /* Decide which segment the section should go in based on the | |
1771 | section name and section flags. We put loadable .note sections | |
1772 | right after the .interp section, so that the PT_NOTE segment is | |
1773 | stored right after the program headers where the OS can read it | |
1774 | in the first page. */ | |
aea4bd9d | 1775 | |
71bfc0ae | 1776 | place = NULL; |
07890c07 AM |
1777 | if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0) |
1778 | place = &hold[orphan_nonalloc]; | |
1779 | else if ((s->flags & SEC_ALLOC) == 0) | |
71bfc0ae | 1780 | ; |
252b5132 | 1781 | else if ((s->flags & SEC_LOAD) != 0 |
ecca9871 | 1782 | && ((iself && sh_type == SHT_NOTE) |
0112cd26 | 1783 | || (!iself && CONST_STRNEQ (secname, ".note")))) |
afd7a018 AM |
1784 | place = &hold[orphan_interp]; |
1785 | else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
1786 | place = &hold[orphan_bss]; | |
1787 | else if ((s->flags & SEC_SMALL_DATA) != 0) | |
1788 | place = &hold[orphan_sdata]; | |
1789 | else if ((s->flags & SEC_READONLY) == 0) | |
1790 | place = &hold[orphan_data]; | |
ecca9871 | 1791 | else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL)) |
0112cd26 | 1792 | || (!iself && CONST_STRNEQ (secname, ".rel"))) |
afd7a018 AM |
1793 | && (s->flags & SEC_LOAD) != 0) |
1794 | place = &hold[orphan_rel]; | |
1795 | else if ((s->flags & SEC_CODE) == 0) | |
1796 | place = &hold[orphan_rodata]; | |
1797 | else | |
1798 | place = &hold[orphan_text]; | |
71bfc0ae | 1799 | |
afd7a018 | 1800 | after = NULL; |
5ba47421 | 1801 | if (place != NULL) |
252b5132 | 1802 | { |
afd7a018 | 1803 | if (place->os == NULL) |
5ba47421 | 1804 | { |
afd7a018 AM |
1805 | if (place->name != NULL) |
1806 | place->os = lang_output_section_find (place->name); | |
1807 | else | |
1808 | place->os = output_rel_find (s, isdyn); | |
5ba47421 | 1809 | } |
afd7a018 AM |
1810 | after = place->os; |
1811 | if (after == NULL) | |
390fbbf1 AM |
1812 | after = lang_output_section_find_by_flags |
1813 | (s, &place->os, _bfd_elf_match_sections_by_type); | |
afd7a018 AM |
1814 | if (after == NULL) |
1815 | /* *ABS* is always the first output section statement. */ | |
1816 | after = &lang_output_section_statement.head->output_section_statement; | |
252b5132 RH |
1817 | } |
1818 | ||
c2edb4b8 | 1819 | return lang_insert_orphan (s, secname, constraint, after, place, NULL, NULL); |
252b5132 | 1820 | } |
c56feb2b AM |
1821 | EOF |
1822 | fi | |
1823 | ||
1824 | if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then | |
92b93329 | 1825 | fragment <<EOF |
252b5132 | 1826 | |
deb04cdb AM |
1827 | static void |
1828 | gld${EMULATION_NAME}_finish (void) | |
1829 | { | |
f13a99db AM |
1830 | bfd_boolean need_layout = bfd_elf_discard_info (link_info.output_bfd, |
1831 | &link_info); | |
81e1b023 | 1832 | |
8ded5a0f | 1833 | gld${EMULATION_NAME}_map_segments (need_layout); |
1e035701 | 1834 | finish_default (); |
73d074b4 | 1835 | } |
41392f03 AM |
1836 | EOF |
1837 | fi | |
1838 | ||
1839 | if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then | |
92b93329 | 1840 | fragment <<EOF |
252b5132 RH |
1841 | |
1842 | static char * | |
0c7a8e5a | 1843 | gld${EMULATION_NAME}_get_script (int *isfile) |
252b5132 RH |
1844 | EOF |
1845 | ||
1846 | if test -n "$COMPILE_IN" | |
1847 | then | |
1848 | # Scripts compiled in. | |
1849 | ||
1850 | # sed commands to quote an ld script as a C string. | |
597e2591 | 1851 | sc="-f stringify.sed" |
252b5132 | 1852 | |
92b93329 | 1853 | fragment <<EOF |
60bcf0fa | 1854 | { |
252b5132 RH |
1855 | *isfile = 0; |
1856 | ||
1049f94e | 1857 | if (link_info.relocatable && config.build_constructors) |
597e2591 | 1858 | return |
252b5132 | 1859 | EOF |
afd7a018 AM |
1860 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
1861 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c | |
1862 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
1863 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
1864 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
61585df2 | 1865 | if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else |
afd7a018 AM |
1866 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c |
1867 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
db6751f2 | 1868 | fi |
36af4a4e JJ |
1869 | if test -n "$GENERATE_PIE_SCRIPT" ; then |
1870 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then | |
8c37241b JJ |
1871 | echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c |
1872 | echo ' && link_info.relro' >> e${EMULATION_NAME}.c | |
fbfca19e | 1873 | echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c |
afd7a018 | 1874 | sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c |
36af4a4e | 1875 | echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c |
afd7a018 | 1876 | sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c |
36af4a4e | 1877 | fi |
afd7a018 AM |
1878 | echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c |
1879 | sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c | |
36af4a4e | 1880 | fi |
252b5132 | 1881 | if test -n "$GENERATE_SHLIB_SCRIPT" ; then |
82434356 | 1882 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then |
8c37241b JJ |
1883 | echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c |
1884 | echo ' && link_info.relro' >> e${EMULATION_NAME}.c | |
fbfca19e | 1885 | echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c |
afd7a018 | 1886 | sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c |
db6751f2 | 1887 | echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c |
afd7a018 | 1888 | sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c |
82434356 | 1889 | fi |
afd7a018 AM |
1890 | echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c |
1891 | sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c | |
252b5132 | 1892 | fi |
82434356 | 1893 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then |
8c37241b | 1894 | echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c |
fbfca19e | 1895 | echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c |
afd7a018 AM |
1896 | sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c |
1897 | echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c | |
1898 | sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c | |
82434356 | 1899 | fi |
afd7a018 AM |
1900 | echo ' ; else return' >> e${EMULATION_NAME}.c |
1901 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1902 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
1903 | |
1904 | else | |
1905 | # Scripts read from the filesystem. | |
1906 | ||
92b93329 | 1907 | fragment <<EOF |
60bcf0fa | 1908 | { |
252b5132 RH |
1909 | *isfile = 1; |
1910 | ||
1049f94e | 1911 | if (link_info.relocatable && config.build_constructors) |
252b5132 | 1912 | return "ldscripts/${EMULATION_NAME}.xu"; |
1049f94e | 1913 | else if (link_info.relocatable) |
252b5132 RH |
1914 | return "ldscripts/${EMULATION_NAME}.xr"; |
1915 | else if (!config.text_read_only) | |
1916 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
a060b769 AM |
1917 | EOF |
1918 | if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : | |
1919 | else | |
92b93329 | 1920 | fragment <<EOF |
252b5132 RH |
1921 | else if (!config.magic_demand_paged) |
1922 | return "ldscripts/${EMULATION_NAME}.xn"; | |
a060b769 AM |
1923 | EOF |
1924 | fi | |
36af4a4e JJ |
1925 | if test -n "$GENERATE_PIE_SCRIPT" ; then |
1926 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then | |
92b93329 | 1927 | fragment <<EOF |
8c37241b | 1928 | else if (link_info.pie && link_info.combreloc |
fbfca19e | 1929 | && link_info.relro && (link_info.flags & DF_BIND_NOW)) |
8c37241b | 1930 | return "ldscripts/${EMULATION_NAME}.xdw"; |
36af4a4e JJ |
1931 | else if (link_info.pie && link_info.combreloc) |
1932 | return "ldscripts/${EMULATION_NAME}.xdc"; | |
1933 | EOF | |
1934 | fi | |
92b93329 | 1935 | fragment <<EOF |
36af4a4e JJ |
1936 | else if (link_info.pie) |
1937 | return "ldscripts/${EMULATION_NAME}.xd"; | |
1938 | EOF | |
1939 | fi | |
a060b769 AM |
1940 | if test -n "$GENERATE_SHLIB_SCRIPT" ; then |
1941 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then | |
92b93329 | 1942 | fragment <<EOF |
8c37241b | 1943 | else if (link_info.shared && link_info.combreloc |
fbfca19e | 1944 | && link_info.relro && (link_info.flags & DF_BIND_NOW)) |
8c37241b | 1945 | return "ldscripts/${EMULATION_NAME}.xsw"; |
a060b769 AM |
1946 | else if (link_info.shared && link_info.combreloc) |
1947 | return "ldscripts/${EMULATION_NAME}.xsc"; | |
1948 | EOF | |
1949 | fi | |
92b93329 | 1950 | fragment <<EOF |
252b5132 RH |
1951 | else if (link_info.shared) |
1952 | return "ldscripts/${EMULATION_NAME}.xs"; | |
a060b769 AM |
1953 | EOF |
1954 | fi | |
1955 | if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then | |
92b93329 | 1956 | fragment <<EOF |
8c37241b | 1957 | else if (link_info.combreloc && link_info.relro |
fbfca19e | 1958 | && (link_info.flags & DF_BIND_NOW)) |
8c37241b | 1959 | return "ldscripts/${EMULATION_NAME}.xw"; |
a060b769 AM |
1960 | else if (link_info.combreloc) |
1961 | return "ldscripts/${EMULATION_NAME}.xc"; | |
1962 | EOF | |
1963 | fi | |
92b93329 | 1964 | fragment <<EOF |
252b5132 RH |
1965 | else |
1966 | return "ldscripts/${EMULATION_NAME}.x"; | |
1967 | } | |
252b5132 | 1968 | |
3b108066 | 1969 | EOF |
41392f03 AM |
1970 | fi |
1971 | fi | |
3b108066 | 1972 | |
41392f03 | 1973 | if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then |
3b108066 | 1974 | |
e0ee487b | 1975 | if test -n "$PARSE_AND_LIST_PROLOGUE" ; then |
92b93329 | 1976 | fragment <<EOF |
e0ee487b L |
1977 | $PARSE_AND_LIST_PROLOGUE |
1978 | EOF | |
1979 | fi | |
1980 | ||
92b93329 | 1981 | fragment <<EOF |
e0ee487b | 1982 | |
6c1439be L |
1983 | #define OPTION_DISABLE_NEW_DTAGS (400) |
1984 | #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1) | |
a1ab1d2a | 1985 | #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1) |
65765700 | 1986 | #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1) |
b58f81ae | 1987 | #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1) |
fdc90cb4 | 1988 | #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1) |
c0065db7 | 1989 | #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1) |
e13629bc | 1990 | |
3bcf5557 | 1991 | static void |
0c7a8e5a AM |
1992 | gld${EMULATION_NAME}_add_options |
1993 | (int ns, char **shortopts, int nl, struct option **longopts, | |
1994 | int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED) | |
e0ee487b | 1995 | { |
3bcf5557 AM |
1996 | static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:"; |
1997 | static const struct option xtra_long[] = { | |
c0065db7 | 1998 | {"build-id", optional_argument, NULL, OPTION_BUILD_ID}, |
e0ee487b | 1999 | EOF |
e0ee487b L |
2000 | |
2001 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
92b93329 | 2002 | fragment <<EOF |
3bcf5557 AM |
2003 | {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS}, |
2004 | {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS}, | |
2005 | {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR}, | |
b58f81ae | 2006 | {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, |
fdc90cb4 | 2007 | {"hash-style", required_argument, NULL, OPTION_HASH_STYLE}, |
3bcf5557 | 2008 | {"Bgroup", no_argument, NULL, OPTION_GROUP}, |
e0ee487b L |
2009 | EOF |
2010 | fi | |
2011 | ||
2012 | if test -n "$PARSE_AND_LIST_LONGOPTS" ; then | |
92b93329 | 2013 | fragment <<EOF |
3bcf5557 | 2014 | $PARSE_AND_LIST_LONGOPTS |
e0ee487b L |
2015 | EOF |
2016 | fi | |
2017 | ||
92b93329 | 2018 | fragment <<EOF |
3bcf5557 AM |
2019 | {NULL, no_argument, NULL, 0} |
2020 | }; | |
2021 | ||
2022 | *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short)); | |
2023 | memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short)); | |
2024 | *longopts = (struct option *) | |
2025 | xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); | |
2026 | memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); | |
2027 | } | |
04925e1e | 2028 | |
24382dca | 2029 | #define DEFAULT_BUILD_ID_STYLE "sha1" |
c0065db7 | 2030 | |
3bcf5557 | 2031 | static bfd_boolean |
0c7a8e5a | 2032 | gld${EMULATION_NAME}_handle_option (int optc) |
e0ee487b | 2033 | { |
e0ee487b L |
2034 | switch (optc) |
2035 | { | |
2036 | default: | |
3bcf5557 | 2037 | return FALSE; |
6c1439be | 2038 | |
c0065db7 RM |
2039 | case OPTION_BUILD_ID: |
2040 | if (link_info.emit_note_gnu_build_id != NULL) | |
2041 | { | |
2042 | free (link_info.emit_note_gnu_build_id); | |
2043 | link_info.emit_note_gnu_build_id = NULL; | |
2044 | } | |
2045 | if (optarg == NULL) | |
2046 | optarg = DEFAULT_BUILD_ID_STYLE; | |
2047 | if (strcmp (optarg, "none")) | |
2048 | link_info.emit_note_gnu_build_id = xstrdup (optarg); | |
2049 | break; | |
2050 | ||
e0ee487b | 2051 | EOF |
e0ee487b L |
2052 | |
2053 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
92b93329 | 2054 | fragment <<EOF |
6c1439be | 2055 | case OPTION_DISABLE_NEW_DTAGS: |
b34976b6 | 2056 | link_info.new_dtags = FALSE; |
6c1439be L |
2057 | break; |
2058 | ||
2059 | case OPTION_ENABLE_NEW_DTAGS: | |
b34976b6 | 2060 | link_info.new_dtags = TRUE; |
6c1439be L |
2061 | break; |
2062 | ||
65765700 | 2063 | case OPTION_EH_FRAME_HDR: |
b34976b6 | 2064 | link_info.eh_frame_hdr = TRUE; |
65765700 JJ |
2065 | break; |
2066 | ||
a1ab1d2a UD |
2067 | case OPTION_GROUP: |
2068 | link_info.flags_1 |= (bfd_vma) DF_1_GROUP; | |
2069 | /* Groups must be self-contained. */ | |
560e09e9 NC |
2070 | link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; |
2071 | link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR; | |
a1ab1d2a UD |
2072 | break; |
2073 | ||
b58f81ae DJ |
2074 | case OPTION_EXCLUDE_LIBS: |
2075 | add_excluded_libs (optarg); | |
2076 | break; | |
2077 | ||
fdc90cb4 JJ |
2078 | case OPTION_HASH_STYLE: |
2079 | link_info.emit_hash = FALSE; | |
2080 | link_info.emit_gnu_hash = FALSE; | |
2081 | if (strcmp (optarg, "sysv") == 0) | |
2082 | link_info.emit_hash = TRUE; | |
2083 | else if (strcmp (optarg, "gnu") == 0) | |
2084 | link_info.emit_gnu_hash = TRUE; | |
2085 | else if (strcmp (optarg, "both") == 0) | |
2086 | { | |
2087 | link_info.emit_hash = TRUE; | |
2088 | link_info.emit_gnu_hash = TRUE; | |
2089 | } | |
2090 | else | |
2091 | einfo (_("%P%F: invalid hash style \`%s'\n"), optarg); | |
2092 | break; | |
2093 | ||
e0ee487b L |
2094 | case 'z': |
2095 | if (strcmp (optarg, "initfirst") == 0) | |
2096 | link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST; | |
2097 | else if (strcmp (optarg, "interpose") == 0) | |
2098 | link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE; | |
2099 | else if (strcmp (optarg, "loadfltr") == 0) | |
2100 | link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR; | |
2101 | else if (strcmp (optarg, "nodefaultlib") == 0) | |
2102 | link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB; | |
2103 | else if (strcmp (optarg, "nodelete") == 0) | |
2104 | link_info.flags_1 |= (bfd_vma) DF_1_NODELETE; | |
2105 | else if (strcmp (optarg, "nodlopen") == 0) | |
2106 | link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN; | |
2107 | else if (strcmp (optarg, "nodump") == 0) | |
2108 | link_info.flags_1 |= (bfd_vma) DF_1_NODUMP; | |
2109 | else if (strcmp (optarg, "now") == 0) | |
2110 | { | |
2111 | link_info.flags |= (bfd_vma) DF_BIND_NOW; | |
2112 | link_info.flags_1 |= (bfd_vma) DF_1_NOW; | |
2113 | } | |
5fa222e4 AM |
2114 | else if (strcmp (optarg, "lazy") == 0) |
2115 | { | |
2116 | link_info.flags &= ~(bfd_vma) DF_BIND_NOW; | |
2117 | link_info.flags_1 &= ~(bfd_vma) DF_1_NOW; | |
2118 | } | |
e0ee487b L |
2119 | else if (strcmp (optarg, "origin") == 0) |
2120 | { | |
2121 | link_info.flags |= (bfd_vma) DF_ORIGIN; | |
2122 | link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN; | |
2123 | } | |
a1ab1d2a | 2124 | else if (strcmp (optarg, "defs") == 0) |
560e09e9 | 2125 | link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; |
aa713662 | 2126 | else if (strcmp (optarg, "muldefs") == 0) |
b34976b6 | 2127 | link_info.allow_multiple_definition = TRUE; |
db6751f2 | 2128 | else if (strcmp (optarg, "combreloc") == 0) |
b34976b6 | 2129 | link_info.combreloc = TRUE; |
db6751f2 | 2130 | else if (strcmp (optarg, "nocombreloc") == 0) |
b34976b6 | 2131 | link_info.combreloc = FALSE; |
8bd621d8 | 2132 | else if (strcmp (optarg, "nocopyreloc") == 0) |
0c7a8e5a | 2133 | link_info.nocopyreloc = TRUE; |
9ee5e499 JJ |
2134 | else if (strcmp (optarg, "execstack") == 0) |
2135 | { | |
2136 | link_info.execstack = TRUE; | |
2137 | link_info.noexecstack = FALSE; | |
2138 | } | |
2139 | else if (strcmp (optarg, "noexecstack") == 0) | |
2140 | { | |
2141 | link_info.noexecstack = TRUE; | |
2142 | link_info.execstack = FALSE; | |
2143 | } | |
88b882e9 L |
2144 | EOF |
2145 | ||
2146 | if test -n "$COMMONPAGESIZE"; then | |
92b93329 | 2147 | fragment <<EOF |
8c37241b JJ |
2148 | else if (strcmp (optarg, "relro") == 0) |
2149 | link_info.relro = TRUE; | |
2150 | else if (strcmp (optarg, "norelro") == 0) | |
2151 | link_info.relro = FALSE; | |
88b882e9 L |
2152 | EOF |
2153 | fi | |
2154 | ||
92b93329 | 2155 | fragment <<EOF |
0112cd26 | 2156 | else if (CONST_STRNEQ (optarg, "max-page-size=")) |
24718e3b L |
2157 | { |
2158 | char *end; | |
0112cd26 | 2159 | |
24718e3b | 2160 | config.maxpagesize = strtoul (optarg + 14, &end, 0); |
b8142865 | 2161 | if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0) |
24718e3b L |
2162 | einfo (_("%P%F: invalid maxium page size \`%s'\n"), |
2163 | optarg + 14); | |
b8142865 L |
2164 | ASSERT (default_target != NULL); |
2165 | bfd_emul_set_maxpagesize (default_target, config.maxpagesize); | |
24718e3b | 2166 | } |
0112cd26 | 2167 | else if (CONST_STRNEQ (optarg, "common-page-size=")) |
24718e3b L |
2168 | { |
2169 | char *end; | |
2170 | config.commonpagesize = strtoul (optarg + 17, &end, 0); | |
b8142865 L |
2171 | if (*end |
2172 | || (config.commonpagesize & (config.commonpagesize - 1)) != 0) | |
24718e3b L |
2173 | einfo (_("%P%F: invalid common page size \`%s'\n"), |
2174 | optarg + 17); | |
b8142865 L |
2175 | ASSERT (default_target != NULL); |
2176 | bfd_emul_set_commonpagesize (default_target, | |
2177 | config.commonpagesize); | |
24718e3b | 2178 | } |
e0ee487b | 2179 | /* What about the other Solaris -z options? FIXME. */ |
6c1439be | 2180 | break; |
e0ee487b L |
2181 | EOF |
2182 | fi | |
2183 | ||
2184 | if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then | |
92b93329 | 2185 | fragment <<EOF |
e0ee487b L |
2186 | $PARSE_AND_LIST_ARGS_CASES |
2187 | EOF | |
2188 | fi | |
2189 | ||
92b93329 | 2190 | fragment <<EOF |
e0ee487b L |
2191 | } |
2192 | ||
3bcf5557 | 2193 | return TRUE; |
e0ee487b L |
2194 | } |
2195 | ||
41392f03 | 2196 | EOF |
41392f03 | 2197 | |
4b209b22 | 2198 | if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then |
92b93329 | 2199 | fragment <<EOF |
41392f03 | 2200 | |
e0ee487b | 2201 | static void |
0c7a8e5a | 2202 | gld${EMULATION_NAME}_list_options (FILE * file) |
e0ee487b | 2203 | { |
442996ee AM |
2204 | fprintf (file, _("\ |
2205 | --build-id[=STYLE] Generate build ID note\n")); | |
e0ee487b | 2206 | EOF |
e0ee487b L |
2207 | |
2208 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
92b93329 | 2209 | fragment <<EOF |
442996ee AM |
2210 | fprintf (file, _("\ |
2211 | -Bgroup Selects group name lookup rules for DSO\n")); | |
2212 | fprintf (file, _("\ | |
2213 | --disable-new-dtags Disable new dynamic tags\n")); | |
2214 | fprintf (file, _("\ | |
2215 | --enable-new-dtags Enable new dynamic tags\n")); | |
2216 | fprintf (file, _("\ | |
2217 | --eh-frame-hdr Create .eh_frame_hdr section\n")); | |
2218 | fprintf (file, _("\ | |
2219 | --hash-style=STYLE Set hash style to sysv, gnu or both\n")); | |
2220 | fprintf (file, _("\ | |
2221 | -z combreloc Merge dynamic relocs into one section and sort\n")); | |
2222 | fprintf (file, _("\ | |
2223 | -z defs Report unresolved symbols in object files.\n")); | |
2224 | fprintf (file, _("\ | |
2225 | -z execstack Mark executable as requiring executable stack\n")); | |
2226 | fprintf (file, _("\ | |
2227 | -z initfirst Mark DSO to be initialized first at runtime\n")); | |
2228 | fprintf (file, _("\ | |
2229 | -z interpose Mark object to interpose all DSOs but executable\n")); | |
2230 | fprintf (file, _("\ | |
2231 | -z lazy Mark object lazy runtime binding (default)\n")); | |
2232 | fprintf (file, _("\ | |
2233 | -z loadfltr Mark object requiring immediate process\n")); | |
2234 | fprintf (file, _("\ | |
2235 | -z muldefs Allow multiple definitions\n")); | |
2236 | fprintf (file, _("\ | |
2237 | -z nocombreloc Don't merge dynamic relocs into one section\n")); | |
2238 | fprintf (file, _("\ | |
2239 | -z nocopyreloc Don't create copy relocs\n")); | |
2240 | fprintf (file, _("\ | |
2241 | -z nodefaultlib Mark object not to use default search paths\n")); | |
2242 | fprintf (file, _("\ | |
2243 | -z nodelete Mark DSO non-deletable at runtime\n")); | |
2244 | fprintf (file, _("\ | |
2245 | -z nodlopen Mark DSO not available to dlopen\n")); | |
2246 | fprintf (file, _("\ | |
2247 | -z nodump Mark DSO not available to dldump\n")); | |
2248 | fprintf (file, _("\ | |
2249 | -z noexecstack Mark executable as not requiring executable stack\n")); | |
88b882e9 L |
2250 | EOF |
2251 | ||
2252 | if test -n "$COMMONPAGESIZE"; then | |
92b93329 | 2253 | fragment <<EOF |
442996ee AM |
2254 | fprintf (file, _("\ |
2255 | -z norelro Don't create RELRO program header\n")); | |
88b882e9 L |
2256 | EOF |
2257 | fi | |
2258 | ||
92b93329 | 2259 | fragment <<EOF |
442996ee AM |
2260 | fprintf (file, _("\ |
2261 | -z now Mark object non-lazy runtime binding\n")); | |
2262 | fprintf (file, _("\ | |
2263 | -z origin Mark object requiring immediate \$ORIGIN\n\ | |
2264 | processing at runtime\n")); | |
88b882e9 L |
2265 | EOF |
2266 | ||
2267 | if test -n "$COMMONPAGESIZE"; then | |
92b93329 | 2268 | fragment <<EOF |
442996ee AM |
2269 | fprintf (file, _("\ |
2270 | -z relro Create RELRO program header\n")); | |
88b882e9 L |
2271 | EOF |
2272 | fi | |
2273 | ||
92b93329 | 2274 | fragment <<EOF |
442996ee AM |
2275 | fprintf (file, _("\ |
2276 | -z max-page-size=SIZE Set maximum page size to SIZE\n")); | |
2277 | fprintf (file, _("\ | |
2278 | -z common-page-size=SIZE Set common page size to SIZE\n")); | |
2279 | fprintf (file, _("\ | |
2280 | -z KEYWORD Ignored for Solaris compatibility\n")); | |
e0ee487b L |
2281 | EOF |
2282 | fi | |
2283 | ||
2284 | if test -n "$PARSE_AND_LIST_OPTIONS" ; then | |
92b93329 | 2285 | fragment <<EOF |
e0ee487b L |
2286 | $PARSE_AND_LIST_OPTIONS |
2287 | EOF | |
2288 | fi | |
2289 | ||
92b93329 | 2290 | fragment <<EOF |
e0ee487b L |
2291 | } |
2292 | EOF | |
e0ee487b L |
2293 | |
2294 | if test -n "$PARSE_AND_LIST_EPILOGUE" ; then | |
92b93329 | 2295 | fragment <<EOF |
e0ee487b L |
2296 | $PARSE_AND_LIST_EPILOGUE |
2297 | EOF | |
2298 | fi | |
41392f03 AM |
2299 | fi |
2300 | else | |
92b93329 | 2301 | fragment <<EOF |
3bcf5557 AM |
2302 | #define gld${EMULATION_NAME}_add_options NULL |
2303 | #define gld${EMULATION_NAME}_handle_option NULL | |
41392f03 | 2304 | EOF |
4b209b22 | 2305 | if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then |
92b93329 | 2306 | fragment <<EOF |
4b209b22 | 2307 | #define gld${EMULATION_NAME}_list_options NULL |
41392f03 AM |
2308 | EOF |
2309 | fi | |
2310 | fi | |
e0ee487b | 2311 | |
92b93329 | 2312 | fragment <<EOF |
252b5132 | 2313 | |
60bcf0fa | 2314 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 | 2315 | { |
41392f03 AM |
2316 | ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse}, |
2317 | ${LDEMUL_SYSLIB-syslib_default}, | |
2318 | ${LDEMUL_HLL-hll_default}, | |
2319 | ${LDEMUL_AFTER_PARSE-after_parse_default}, | |
2320 | ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open}, | |
2321 | ${LDEMUL_AFTER_ALLOCATION-after_allocation_default}, | |
2322 | ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default}, | |
2323 | ${LDEMUL_CHOOSE_TARGET-ldemul_default_target}, | |
2324 | ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation}, | |
2325 | ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script}, | |
252b5132 RH |
2326 | "${EMULATION_NAME}", |
2327 | "${OUTPUT_FORMAT}", | |
c56feb2b | 2328 | ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish}, |
41392f03 AM |
2329 | ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL}, |
2330 | ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive}, | |
2331 | ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan}, | |
2332 | ${LDEMUL_SET_SYMBOLS-NULL}, | |
3bcf5557 AM |
2333 | ${LDEMUL_PARSE_ARGS-NULL}, |
2334 | gld${EMULATION_NAME}_add_options, | |
2335 | gld${EMULATION_NAME}_handle_option, | |
41392f03 | 2336 | ${LDEMUL_UNRECOGNIZED_FILE-NULL}, |
4b209b22 | 2337 | ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options}, |
4a43e768 | 2338 | ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols}, |
41392f03 | 2339 | ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL}, |
fac1652d | 2340 | ${LDEMUL_NEW_VERS_PATTERN-NULL} |
252b5132 RH |
2341 | }; |
2342 | EOF |