Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for HP PA-RISC ELF files. |
43cbcf28 | 2 | Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
30667bf3 | 5 | Original code by |
252b5132 RH |
6 | Center for Software Science |
7 | Department of Computer Science | |
8 | University of Utah | |
30667bf3 | 9 | Largely rewritten by Alan Modra <alan@linuxcare.com.au> |
252b5132 RH |
10 | |
11 | This file is part of BFD, the Binary File Descriptor library. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #include "bfd.h" | |
28 | #include "sysdep.h" | |
252b5132 RH |
29 | #include "libbfd.h" |
30 | #include "elf-bfd.h" | |
9e103c9c JL |
31 | #include "elf/hppa.h" |
32 | #include "libhppa.h" | |
33 | #include "elf32-hppa.h" | |
34 | #define ARCH_SIZE 32 | |
35 | #include "elf-hppa.h" | |
edd21aca | 36 | #include "elf32-hppa.h" |
9e103c9c | 37 | |
252b5132 | 38 | |
74d1c347 AM |
39 | /* In order to gain some understanding of code in this file without |
40 | knowing all the intricate details of the linker, note the | |
41 | following: | |
42 | ||
43 | Functions named elf32_hppa_* are called by external routines, other | |
44 | functions are only called locally. elf32_hppa_* functions appear | |
45 | in this file more or less in the order in which they are called | |
46 | from external routines. eg. elf32_hppa_check_relocs is called | |
47 | early in the link process, elf32_hppa_finish_dynamic_sections is | |
48 | one of the last functions. */ | |
49 | ||
50 | ||
edd21aca | 51 | /* We use two hash tables to hold information for linking PA ELF objects. |
252b5132 RH |
52 | |
53 | The first is the elf32_hppa_link_hash_table which is derived | |
54 | from the standard ELF linker hash table. We use this as a place to | |
55 | attach other hash tables and static information. | |
56 | ||
57 | The second is the stub hash table which is derived from the | |
58 | base BFD hash table. The stub hash table holds the information | |
30667bf3 AM |
59 | necessary to build the linker stubs during a link. |
60 | ||
61 | There are a number of different stubs generated by the linker. | |
62 | ||
63 | Long branch stub: | |
64 | : ldil LR'X,%r1 | |
65 | : be,n RR'X(%sr4,%r1) | |
66 | ||
67 | PIC long branch stub: | |
68 | : b,l .+8,%r1 | |
69 | : addil L'X - ($PIC_pcrel$0 - 4),%r1 | |
70 | : be,n R'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) | |
71 | ||
72 | Import stub to call shared library routine from normal object file | |
73 | (single sub-space version) | |
74 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
75 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
76 | : bv %r0(%r21) | |
77 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
78 | ||
79 | Import stub to call shared library routine from shared library | |
80 | (single sub-space version) | |
81 | : addil L'ltoff,%r19 ; get procedure entry point | |
82 | : ldw R'ltoff(%r1),%r21 | |
83 | : bv %r0(%r21) | |
84 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
85 | ||
86 | Import stub to call shared library routine from normal object file | |
87 | (multiple sub-space support) | |
88 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
89 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
90 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
91 | : ldsid (%r21),%r1 | |
92 | : mtsp %r1,%sr0 | |
93 | : be 0(%sr0,%r21) ; branch to target | |
94 | : stw %rp,-24(%sp) ; save rp | |
95 | ||
96 | Import stub to call shared library routine from shared library | |
97 | (multiple sub-space support) | |
98 | : addil L'ltoff,%r19 ; get procedure entry point | |
99 | : ldw R'ltoff(%r1),%r21 | |
100 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
101 | : ldsid (%r21),%r1 | |
102 | : mtsp %r1,%sr0 | |
103 | : be 0(%sr0,%r21) ; branch to target | |
104 | : stw %rp,-24(%sp) ; save rp | |
105 | ||
106 | Export stub to return from shared lib routine (multiple sub-space support) | |
107 | One of these is created for each exported procedure in a shared | |
108 | library (and stored in the shared lib). Shared lib routines are | |
109 | called via the first instruction in the export stub so that we can | |
110 | do an inter-space return. Not required for single sub-space. | |
111 | : bl,n X,%rp ; trap the return | |
112 | : nop | |
113 | : ldw -24(%sp),%rp ; restore the original rp | |
114 | : ldsid (%rp),%r1 | |
115 | : mtsp %r1,%sr0 | |
74d1c347 | 116 | : be,n 0(%sr0,%rp) ; inter-space return */ |
30667bf3 AM |
117 | |
118 | #define PLT_ENTRY_SIZE 8 | |
74d1c347 | 119 | #define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE |
30667bf3 AM |
120 | #define GOT_ENTRY_SIZE 4 |
121 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
122 | ||
123 | /* Section name for stubs is the associated section name plus this | |
124 | string. */ | |
125 | #define STUB_SUFFIX ".stub" | |
126 | ||
127 | /* Setting the following non-zero makes all long branch stubs | |
128 | generated during a shared link of the PIC variety. This saves on | |
129 | relocs, but costs one extra instruction per stub. */ | |
130 | #ifndef LONG_BRANCH_PIC_IN_SHLIB | |
131 | #define LONG_BRANCH_PIC_IN_SHLIB 1 | |
132 | #endif | |
252b5132 | 133 | |
74d1c347 AM |
134 | /* Set this non-zero to use import stubs instead of long branch stubs |
135 | where a .plt entry exists for the symbol. This is a fairly useless | |
136 | option as import stubs are bigger than PIC long branch stubs. */ | |
137 | #ifndef LONG_BRANCH_VIA_PLT | |
138 | #define LONG_BRANCH_VIA_PLT 0 | |
139 | #endif | |
140 | ||
30667bf3 AM |
141 | /* We don't need to copy any PC- or GP-relative dynamic relocs into a |
142 | shared object's dynamic section. */ | |
143 | #ifndef RELATIVE_DYNAMIC_RELOCS | |
144 | #define RELATIVE_DYNAMIC_RELOCS 0 | |
145 | #endif | |
146 | ||
147 | ||
148 | enum elf32_hppa_stub_type { | |
149 | hppa_stub_long_branch, | |
150 | hppa_stub_long_branch_shared, | |
151 | hppa_stub_import, | |
152 | hppa_stub_import_shared, | |
153 | hppa_stub_export, | |
154 | hppa_stub_none | |
155 | }; | |
156 | ||
157 | ||
158 | struct elf32_hppa_stub_hash_entry { | |
252b5132 | 159 | |
edd21aca | 160 | /* Base hash table entry structure. */ |
252b5132 RH |
161 | struct bfd_hash_entry root; |
162 | ||
edd21aca AM |
163 | /* The stub section. */ |
164 | asection *stub_sec; | |
165 | ||
30667bf3 AM |
166 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
167 | /* It's associated reloc section. */ | |
168 | asection *reloc_sec; | |
169 | #endif | |
170 | ||
edd21aca | 171 | /* Offset within stub_sec of the beginning of this stub. */ |
30667bf3 | 172 | bfd_vma stub_offset; |
252b5132 RH |
173 | |
174 | /* Given the symbol's value and its section we can determine its final | |
175 | value when building the stubs (so the stub knows where to jump. */ | |
30667bf3 | 176 | bfd_vma target_value; |
252b5132 | 177 | asection *target_section; |
30667bf3 AM |
178 | |
179 | enum elf32_hppa_stub_type stub_type; | |
180 | ||
181 | /* The symbol table entry, if any, that this was derived from. */ | |
182 | struct elf32_hppa_link_hash_entry *h; | |
183 | ||
184 | /* Where this stub is being called from. */ | |
185 | asection *input_section; | |
252b5132 RH |
186 | }; |
187 | ||
30667bf3 AM |
188 | |
189 | struct elf32_hppa_link_hash_entry { | |
190 | ||
191 | struct elf_link_hash_entry elf; | |
192 | ||
193 | /* A pointer to the most recently used stub hash entry against this | |
194 | symbol. */ | |
195 | struct elf32_hppa_stub_hash_entry *stub_cache; | |
196 | ||
197 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
198 | /* Used to track whether we have allocated space for a long branch | |
199 | stub relocation for this symbol in the given section. */ | |
200 | asection *stub_reloc_sec; | |
201 | #endif | |
202 | ||
203 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
204 | /* Used to count relocations for delayed sizing of relocation | |
205 | sections. */ | |
206 | struct elf32_hppa_dyn_reloc_entry { | |
207 | ||
208 | /* Next relocation in the chain. */ | |
209 | struct elf32_hppa_dyn_reloc_entry *next; | |
210 | ||
211 | /* The section in dynobj. */ | |
212 | asection *section; | |
213 | ||
214 | /* Number of relocs copied in this section. */ | |
215 | bfd_size_type count; | |
216 | } *reloc_entries; | |
217 | #endif | |
218 | ||
219 | /* Set during a static link if we detect a function is PIC. */ | |
74d1c347 AM |
220 | unsigned int pic_call:1; |
221 | ||
222 | /* Set if this symbol is used by a plabel reloc. */ | |
223 | unsigned int plabel:1; | |
224 | ||
225 | /* Set if this symbol is an init or fini function and thus should | |
226 | use an absolute reloc. */ | |
227 | unsigned int plt_abs:1; | |
30667bf3 AM |
228 | }; |
229 | ||
230 | ||
231 | struct elf32_hppa_link_hash_table { | |
232 | ||
252b5132 RH |
233 | /* The main hash table. */ |
234 | struct elf_link_hash_table root; | |
235 | ||
236 | /* The stub hash table. */ | |
edd21aca | 237 | struct bfd_hash_table stub_hash_table; |
252b5132 | 238 | |
30667bf3 AM |
239 | /* Linker stub bfd. */ |
240 | bfd *stub_bfd; | |
241 | ||
242 | /* Whether we support multiple sub-spaces for shared libs. */ | |
243 | boolean multi_subspace; | |
244 | ||
245 | /* Linker call-backs. */ | |
246 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
247 | void (*layout_sections_again) PARAMS ((void)); | |
248 | ||
249 | /* Arrays to keep track of which stub sections have been created. */ | |
250 | asection **stub_section_created; | |
251 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
252 | asection **reloc_section_created; | |
253 | #endif | |
254 | int first_init_sec; | |
255 | int first_fini_sec; | |
256 | ||
30667bf3 AM |
257 | /* Short-cuts to get to dynamic linker sections. */ |
258 | asection *sgot; | |
259 | asection *srelgot; | |
260 | asection *splt; | |
261 | asection *srelplt; | |
262 | asection *sdynbss; | |
263 | asection *srelbss; | |
252b5132 RH |
264 | }; |
265 | ||
252b5132 | 266 | |
30667bf3 AM |
267 | /* Various hash macros and functions. */ |
268 | #define hppa_link_hash_table(p) \ | |
edd21aca | 269 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
252b5132 | 270 | |
30667bf3 AM |
271 | #define hppa_stub_hash_lookup(table, string, create, copy) \ |
272 | ((struct elf32_hppa_stub_hash_entry *) \ | |
273 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
274 | ||
275 | static struct bfd_hash_entry *stub_hash_newfunc | |
276 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
edd21aca | 277 | |
30667bf3 | 278 | static struct bfd_hash_entry *hppa_link_hash_newfunc |
edd21aca | 279 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 RH |
280 | |
281 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create | |
282 | PARAMS ((bfd *)); | |
283 | ||
252b5132 | 284 | |
30667bf3 AM |
285 | /* Stub handling functions. */ |
286 | static char *hppa_stub_name | |
287 | PARAMS ((const asection *, const asection *, | |
288 | const struct elf32_hppa_link_hash_entry *, | |
289 | const Elf_Internal_Rela *)); | |
edd21aca | 290 | |
30667bf3 AM |
291 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry |
292 | PARAMS ((const asection *, const asection *, | |
293 | struct elf32_hppa_link_hash_entry *, | |
294 | const Elf_Internal_Rela *, struct bfd_link_info *)); | |
edd21aca | 295 | |
30667bf3 AM |
296 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub |
297 | PARAMS ((const char *, asection *, unsigned int, | |
298 | struct bfd_link_info *)); | |
299 | ||
300 | static enum elf32_hppa_stub_type hppa_type_of_stub | |
301 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
302 | struct elf32_hppa_link_hash_entry *, bfd_vma)); | |
303 | ||
304 | static boolean hppa_build_one_stub | |
305 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
306 | ||
307 | static boolean hppa_size_one_stub | |
308 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
309 | ||
310 | ||
311 | /* BFD and elf backend functions. */ | |
312 | static boolean elf32_hppa_object_p PARAMS ((bfd *)); | |
252b5132 | 313 | |
edd21aca AM |
314 | static boolean elf32_hppa_add_symbol_hook |
315 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
316 | const char **, flagword *, asection **, bfd_vma *)); | |
252b5132 | 317 | |
30667bf3 AM |
318 | static boolean elf32_hppa_create_dynamic_sections |
319 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 | 320 | |
30667bf3 AM |
321 | static boolean elf32_hppa_check_relocs |
322 | PARAMS ((bfd *, struct bfd_link_info *, | |
323 | asection *, const Elf_Internal_Rela *)); | |
324 | ||
325 | static asection *elf32_hppa_gc_mark_hook | |
326 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
327 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
328 | ||
329 | static boolean elf32_hppa_gc_sweep_hook | |
330 | PARAMS ((bfd *, struct bfd_link_info *, | |
331 | asection *, const Elf_Internal_Rela *)); | |
332 | ||
74d1c347 AM |
333 | static void elf32_hppa_hide_symbol |
334 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
335 | ||
30667bf3 AM |
336 | static boolean elf32_hppa_adjust_dynamic_symbol |
337 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
338 | ||
339 | static boolean hppa_handle_PIC_calls | |
340 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
341 | ||
74d1c347 AM |
342 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
343 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
344 | static boolean hppa_discard_copies |
345 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
346 | #endif | |
347 | ||
348 | static boolean elf32_hppa_size_dynamic_sections | |
349 | PARAMS ((bfd *, struct bfd_link_info *)); | |
350 | ||
351 | static bfd_reloc_status_type final_link_relocate | |
352 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, | |
353 | bfd_vma, struct bfd_link_info *, asection *, | |
354 | struct elf32_hppa_link_hash_entry *)); | |
355 | ||
356 | static boolean elf32_hppa_relocate_section | |
357 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
358 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
359 | ||
360 | static boolean elf32_hppa_finish_dynamic_symbol | |
361 | PARAMS ((bfd *, struct bfd_link_info *, | |
362 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
363 | ||
364 | static boolean elf32_hppa_finish_dynamic_sections | |
365 | PARAMS ((bfd *, struct bfd_link_info *)); | |
366 | ||
367 | static int elf32_hppa_elf_get_symbol_type | |
368 | PARAMS ((Elf_Internal_Sym *, int)); | |
252b5132 RH |
369 | |
370 | ||
252b5132 RH |
371 | /* Assorted hash table functions. */ |
372 | ||
373 | /* Initialize an entry in the stub hash table. */ | |
374 | ||
375 | static struct bfd_hash_entry * | |
30667bf3 | 376 | stub_hash_newfunc (entry, table, string) |
252b5132 RH |
377 | struct bfd_hash_entry *entry; |
378 | struct bfd_hash_table *table; | |
379 | const char *string; | |
380 | { | |
381 | struct elf32_hppa_stub_hash_entry *ret; | |
382 | ||
383 | ret = (struct elf32_hppa_stub_hash_entry *) entry; | |
384 | ||
385 | /* Allocate the structure if it has not already been allocated by a | |
386 | subclass. */ | |
387 | if (ret == NULL) | |
30667bf3 AM |
388 | { |
389 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
390 | bfd_hash_allocate (table, | |
391 | sizeof (struct elf32_hppa_stub_hash_entry))); | |
392 | if (ret == NULL) | |
393 | return NULL; | |
394 | } | |
252b5132 RH |
395 | |
396 | /* Call the allocation method of the superclass. */ | |
397 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
398 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
399 | ||
400 | if (ret) | |
401 | { | |
402 | /* Initialize the local fields. */ | |
edd21aca | 403 | ret->stub_sec = NULL; |
30667bf3 AM |
404 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
405 | ret->reloc_sec = NULL; | |
406 | #endif | |
407 | ret->stub_offset = 0; | |
252b5132 RH |
408 | ret->target_value = 0; |
409 | ret->target_section = NULL; | |
30667bf3 AM |
410 | ret->stub_type = hppa_stub_long_branch; |
411 | ret->h = NULL; | |
412 | ret->input_section = NULL; | |
413 | } | |
414 | ||
415 | return (struct bfd_hash_entry *) ret; | |
416 | } | |
417 | ||
418 | ||
419 | /* Initialize an entry in the link hash table. */ | |
420 | ||
421 | static struct bfd_hash_entry * | |
422 | hppa_link_hash_newfunc (entry, table, string) | |
423 | struct bfd_hash_entry *entry; | |
424 | struct bfd_hash_table *table; | |
425 | const char *string; | |
426 | { | |
427 | struct elf32_hppa_link_hash_entry *ret; | |
428 | ||
429 | ret = (struct elf32_hppa_link_hash_entry *) entry; | |
430 | ||
431 | /* Allocate the structure if it has not already been allocated by a | |
432 | subclass. */ | |
433 | if (ret == NULL) | |
434 | { | |
435 | ret = ((struct elf32_hppa_link_hash_entry *) | |
436 | bfd_hash_allocate (table, | |
437 | sizeof (struct elf32_hppa_link_hash_entry))); | |
438 | if (ret == NULL) | |
439 | return NULL; | |
440 | } | |
441 | ||
442 | /* Call the allocation method of the superclass. */ | |
443 | ret = ((struct elf32_hppa_link_hash_entry *) | |
444 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
445 | table, string)); | |
446 | ||
447 | if (ret) | |
448 | { | |
449 | /* Initialize the local fields. */ | |
450 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
451 | ret->stub_reloc_sec = NULL; | |
452 | #endif | |
453 | ret->stub_cache = NULL; | |
454 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
455 | ret->reloc_entries = NULL; | |
456 | #endif | |
457 | ret->pic_call = 0; | |
74d1c347 AM |
458 | ret->plabel = 0; |
459 | ret->plt_abs = 0; | |
252b5132 RH |
460 | } |
461 | ||
462 | return (struct bfd_hash_entry *) ret; | |
463 | } | |
464 | ||
30667bf3 | 465 | |
252b5132 RH |
466 | /* Create the derived linker hash table. The PA ELF port uses the derived |
467 | hash table to keep information specific to the PA ELF linker (without | |
468 | using static variables). */ | |
469 | ||
470 | static struct bfd_link_hash_table * | |
471 | elf32_hppa_link_hash_table_create (abfd) | |
472 | bfd *abfd; | |
473 | { | |
474 | struct elf32_hppa_link_hash_table *ret; | |
475 | ||
edd21aca | 476 | ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret))); |
252b5132 RH |
477 | if (ret == NULL) |
478 | return NULL; | |
edd21aca | 479 | |
30667bf3 | 480 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) |
252b5132 RH |
481 | { |
482 | bfd_release (abfd, ret); | |
483 | return NULL; | |
484 | } | |
edd21aca AM |
485 | |
486 | /* Init the stub hash table too. */ | |
30667bf3 | 487 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) |
edd21aca AM |
488 | return NULL; |
489 | ||
30667bf3 AM |
490 | ret->stub_bfd = NULL; |
491 | ret->multi_subspace = 0; | |
492 | ret->add_stub_section = NULL; | |
493 | ret->layout_sections_again = NULL; | |
494 | ret->stub_section_created = NULL; | |
495 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
496 | ret->reloc_section_created = NULL; | |
497 | #endif | |
498 | ret->first_init_sec = 0; | |
499 | ret->first_fini_sec = 0; | |
30667bf3 AM |
500 | ret->sgot = NULL; |
501 | ret->srelgot = NULL; | |
502 | ret->splt = NULL; | |
503 | ret->srelplt = NULL; | |
504 | ret->sdynbss = NULL; | |
505 | ret->srelbss = NULL; | |
252b5132 RH |
506 | |
507 | return &ret->root.root; | |
508 | } | |
509 | ||
30667bf3 AM |
510 | |
511 | /* Build a name for an entry in the stub hash table. */ | |
512 | ||
edd21aca | 513 | static char * |
30667bf3 | 514 | hppa_stub_name (input_section, sym_sec, hash, rel) |
edd21aca | 515 | const asection *input_section; |
30667bf3 AM |
516 | const asection *sym_sec; |
517 | const struct elf32_hppa_link_hash_entry *hash; | |
518 | const Elf_Internal_Rela *rel; | |
edd21aca AM |
519 | { |
520 | char *stub_name; | |
74d1c347 | 521 | size_t len; |
edd21aca | 522 | |
30667bf3 AM |
523 | if (hash) |
524 | { | |
525 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
526 | stub_name = bfd_malloc (len); | |
527 | if (stub_name != NULL) | |
528 | { | |
529 | sprintf (stub_name, "%08x_%s+%x", | |
530 | input_section->id & 0xffffffff, | |
531 | hash->elf.root.root.string, | |
532 | (int) rel->r_addend & 0xffffffff); | |
533 | } | |
534 | } | |
535 | else | |
edd21aca | 536 | { |
30667bf3 AM |
537 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
538 | stub_name = bfd_malloc (len); | |
539 | if (stub_name != NULL) | |
540 | { | |
541 | sprintf (stub_name, "%08x_%x:%x+%x", | |
542 | input_section->id & 0xffffffff, | |
543 | sym_sec->id & 0xffffffff, | |
544 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
545 | (int) rel->r_addend & 0xffffffff); | |
546 | } | |
edd21aca AM |
547 | } |
548 | return stub_name; | |
549 | } | |
252b5132 | 550 | |
edd21aca | 551 | |
30667bf3 AM |
552 | /* Look up an entry in the stub hash. Stub entries are cached because |
553 | creating the stub name takes a bit of time. */ | |
554 | ||
555 | static struct elf32_hppa_stub_hash_entry * | |
556 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, info) | |
557 | const asection *input_section; | |
558 | const asection *sym_sec; | |
559 | struct elf32_hppa_link_hash_entry *hash; | |
560 | const Elf_Internal_Rela *rel; | |
561 | struct bfd_link_info *info; | |
252b5132 | 562 | { |
30667bf3 | 563 | struct elf32_hppa_stub_hash_entry *stub_entry; |
edd21aca | 564 | |
30667bf3 AM |
565 | if (hash != NULL && hash->stub_cache != NULL |
566 | && hash->stub_cache->h == hash | |
567 | && hash->stub_cache->input_section == input_section) | |
edd21aca | 568 | { |
30667bf3 AM |
569 | stub_entry = hash->stub_cache; |
570 | } | |
571 | else | |
572 | { | |
573 | struct bfd_hash_table *stub_hash_table; | |
574 | char *stub_name; | |
edd21aca | 575 | |
30667bf3 AM |
576 | stub_name = hppa_stub_name (input_section, sym_sec, hash, rel); |
577 | if (stub_name == NULL) | |
578 | return NULL; | |
edd21aca | 579 | |
30667bf3 AM |
580 | stub_hash_table = &hppa_link_hash_table (info)->stub_hash_table; |
581 | ||
582 | stub_entry = hppa_stub_hash_lookup (stub_hash_table, stub_name, | |
583 | false, false); | |
584 | if (stub_entry == NULL) | |
585 | { | |
586 | if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak) | |
587 | (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"), | |
588 | bfd_get_filename (input_section->owner), | |
589 | input_section->name, | |
590 | (long) rel->r_offset, | |
591 | stub_name); | |
592 | } | |
593 | else | |
594 | { | |
595 | if (hash != NULL) | |
596 | hash->stub_cache = stub_entry; | |
597 | } | |
598 | ||
599 | free (stub_name); | |
edd21aca | 600 | } |
30667bf3 AM |
601 | |
602 | return stub_entry; | |
603 | } | |
604 | ||
605 | ||
606 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
607 | stub entry are initialised. */ | |
608 | ||
609 | static struct elf32_hppa_stub_hash_entry * | |
610 | hppa_add_stub (stub_name, section, sec_count, info) | |
611 | const char *stub_name; | |
612 | asection *section; | |
613 | unsigned int sec_count; | |
614 | struct bfd_link_info *info; | |
615 | { | |
616 | asection *stub_sec; | |
30667bf3 AM |
617 | struct elf32_hppa_stub_hash_entry *stub_entry; |
618 | struct elf32_hppa_link_hash_table *hplink; | |
edd21aca | 619 | |
30667bf3 AM |
620 | hplink = hppa_link_hash_table (info); |
621 | stub_sec = hplink->stub_section_created[sec_count]; | |
622 | if (stub_sec == NULL) | |
edd21aca | 623 | { |
30667bf3 AM |
624 | int special_sec = 0; |
625 | ||
626 | /* We only want one stub for .init and .fini because glibc | |
627 | splits the _init and _fini functions into two parts. We | |
628 | don't want to put a stub in the middle of a function. | |
629 | It would be better to merge all the stub sections for an | |
630 | output section if the output section + stubs is small enough. | |
631 | This would fix the .init and .fini case and also allow stubs | |
632 | to be merged. It's more linker work though. */ | |
633 | if (strncmp (section->name, ".init", 5) == 0) | |
634 | { | |
74d1c347 AM |
635 | if (hplink->first_init_sec != 0) |
636 | stub_sec = hplink->stub_section_created[hplink->first_init_sec-1]; | |
30667bf3 AM |
637 | special_sec = 1; |
638 | } | |
639 | else if (strncmp (section->name, ".fini", 5) == 0) | |
640 | { | |
74d1c347 AM |
641 | if (hplink->first_fini_sec != 0) |
642 | stub_sec = hplink->stub_section_created[hplink->first_fini_sec-1]; | |
30667bf3 AM |
643 | special_sec = 2; |
644 | } | |
645 | if (stub_sec == NULL) | |
646 | { | |
74d1c347 | 647 | size_t len; |
30667bf3 AM |
648 | char *s_name; |
649 | ||
650 | len = strlen (section->name) + sizeof (STUB_SUFFIX); | |
651 | s_name = bfd_alloc (hplink->stub_bfd, len); | |
652 | if (s_name == NULL) | |
653 | return NULL; | |
654 | ||
655 | strcpy (s_name, section->name); | |
656 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); | |
657 | stub_sec = (*hplink->add_stub_section) (s_name, section); | |
658 | if (stub_sec == NULL) | |
659 | return NULL; | |
660 | ||
661 | if (special_sec != 0) | |
662 | { | |
663 | if (special_sec == 1) | |
74d1c347 | 664 | hplink->first_init_sec = sec_count + 1; |
30667bf3 | 665 | else |
74d1c347 | 666 | hplink->first_fini_sec = sec_count + 1; |
30667bf3 AM |
667 | } |
668 | } | |
669 | hplink->stub_section_created[sec_count] = stub_sec; | |
edd21aca | 670 | } |
252b5132 | 671 | |
30667bf3 AM |
672 | /* Enter this entry into the linker stub hash table. */ |
673 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name, | |
674 | true, false); | |
675 | if (stub_entry == NULL) | |
676 | { | |
677 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
678 | bfd_get_filename (section->owner), | |
679 | stub_name); | |
680 | return NULL; | |
edd21aca AM |
681 | } |
682 | ||
30667bf3 AM |
683 | stub_entry->stub_sec = stub_sec; |
684 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
74d1c347 | 685 | stub_entry->reloc_sec = hplink->reloc_section_created[sec_count]; |
30667bf3 AM |
686 | #endif |
687 | stub_entry->stub_offset = 0; | |
688 | stub_entry->input_section = section; | |
689 | return stub_entry; | |
edd21aca AM |
690 | } |
691 | ||
edd21aca | 692 | |
30667bf3 AM |
693 | /* Determine the type of stub needed, if any, for a call. */ |
694 | ||
695 | static enum elf32_hppa_stub_type | |
696 | hppa_type_of_stub (input_sec, rel, hash, destination) | |
697 | asection *input_sec; | |
698 | const Elf_Internal_Rela *rel; | |
699 | struct elf32_hppa_link_hash_entry *hash; | |
700 | bfd_vma destination; | |
edd21aca | 701 | { |
edd21aca | 702 | bfd_vma location; |
30667bf3 AM |
703 | bfd_vma branch_offset; |
704 | bfd_vma max_branch_offset; | |
705 | unsigned int r_type; | |
706 | ||
707 | if (hash != NULL | |
708 | && (((hash->elf.root.type == bfd_link_hash_defined | |
74d1c347 AM |
709 | || hash->elf.root.type == bfd_link_hash_defweak) |
710 | && hash->elf.root.u.def.section->output_section == NULL) | |
711 | || (hash->elf.root.type == bfd_link_hash_defweak | |
712 | && hash->elf.dynindx != -1 | |
713 | && hash->elf.plt.offset != (bfd_vma) -1) | |
30667bf3 AM |
714 | || hash->elf.root.type == bfd_link_hash_undefweak |
715 | || hash->elf.root.type == bfd_link_hash_undefined | |
716 | || hash->pic_call)) | |
717 | { | |
718 | /* If output_section is NULL, then it's a symbol defined in a | |
719 | shared library. We will need an import stub. Decide between | |
74d1c347 AM |
720 | hppa_stub_import and hppa_stub_import_shared later. For |
721 | shared links we need stubs for undefined or weak syms too; | |
722 | They will presumably be resolved by the dynamic linker. */ | |
30667bf3 AM |
723 | return hppa_stub_import; |
724 | } | |
edd21aca | 725 | |
30667bf3 AM |
726 | /* Determine where the call point is. */ |
727 | location = (input_sec->output_offset | |
728 | + input_sec->output_section->vma | |
729 | + rel->r_offset); | |
edd21aca | 730 | |
30667bf3 AM |
731 | branch_offset = destination - location - 8; |
732 | r_type = ELF32_R_TYPE (rel->r_info); | |
edd21aca | 733 | |
30667bf3 AM |
734 | /* Determine if a long branch stub is needed. parisc branch offsets |
735 | are relative to the second instruction past the branch, ie. +8 | |
736 | bytes on from the branch instruction location. The offset is | |
737 | signed and counts in units of 4 bytes. */ | |
738 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
edd21aca | 739 | { |
30667bf3 AM |
740 | max_branch_offset = (1 << (17-1)) << 2; |
741 | } | |
742 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
743 | { | |
744 | max_branch_offset = (1 << (12-1)) << 2; | |
745 | } | |
74d1c347 | 746 | else /* R_PARISC_PCREL22F */ |
30667bf3 AM |
747 | { |
748 | max_branch_offset = (1 << (22-1)) << 2; | |
edd21aca AM |
749 | } |
750 | ||
30667bf3 | 751 | if (branch_offset + max_branch_offset >= 2*max_branch_offset) |
edd21aca | 752 | { |
74d1c347 | 753 | #if LONG_BRANCH_VIA_PLT |
30667bf3 AM |
754 | if (hash != NULL |
755 | && hash->elf.dynindx != -1 | |
756 | && hash->elf.plt.offset != (bfd_vma) -1) | |
757 | { | |
758 | /* If we are doing a shared link and find we need a long | |
759 | branch stub, then go via the .plt if possible. */ | |
760 | return hppa_stub_import; | |
761 | } | |
762 | else | |
763 | #endif | |
764 | return hppa_stub_long_branch; | |
765 | } | |
766 | return hppa_stub_none; | |
767 | } | |
edd21aca | 768 | |
edd21aca | 769 | |
30667bf3 AM |
770 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
771 | IN_ARG contains the link info pointer. */ | |
edd21aca | 772 | |
30667bf3 AM |
773 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ |
774 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ | |
edd21aca | 775 | |
30667bf3 AM |
776 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */ |
777 | #define ADDIL_R1 0x28200000 /* addil L'XXX,%r1,%r1 */ | |
778 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ | |
252b5132 | 779 | |
30667bf3 AM |
780 | #define ADDIL_DP 0x2b600000 /* addil L'XXX,%dp,%r1 */ |
781 | #define LDW_R1_R21 0x48350000 /* ldw R'XXX(%sr0,%r1),%r21 */ | |
782 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ | |
783 | #define LDW_R1_R19 0x48330000 /* ldw R'XXX(%sr0,%r1),%r19 */ | |
252b5132 | 784 | |
30667bf3 AM |
785 | #define ADDIL_R19 0x2a600000 /* addil L'XXX,%r19,%r1 */ |
786 | #define LDW_R1_DP 0x483b0000 /* ldw R'XXX(%sr0,%r1),%dp */ | |
edd21aca | 787 | |
30667bf3 AM |
788 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ |
789 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ | |
790 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ | |
791 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ | |
edd21aca | 792 | |
30667bf3 AM |
793 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ |
794 | #define NOP 0x08000240 /* nop */ | |
795 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ | |
796 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ | |
797 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ | |
edd21aca | 798 | |
30667bf3 AM |
799 | #ifndef R19_STUBS |
800 | #define R19_STUBS 1 | |
801 | #endif | |
edd21aca | 802 | |
30667bf3 AM |
803 | #if R19_STUBS |
804 | #define LDW_R1_DLT LDW_R1_R19 | |
805 | #else | |
806 | #define LDW_R1_DLT LDW_R1_DP | |
807 | #endif | |
edd21aca | 808 | |
30667bf3 AM |
809 | static boolean |
810 | hppa_build_one_stub (gen_entry, in_arg) | |
811 | struct bfd_hash_entry *gen_entry; | |
812 | PTR in_arg; | |
813 | { | |
814 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
815 | struct bfd_link_info *info; | |
816 | struct elf32_hppa_link_hash_table *hplink; | |
817 | asection *stub_sec; | |
818 | bfd *stub_bfd; | |
819 | bfd_byte *loc; | |
820 | bfd_vma sym_value; | |
74d1c347 AM |
821 | bfd_vma insn; |
822 | int val; | |
30667bf3 | 823 | int size; |
edd21aca | 824 | |
30667bf3 AM |
825 | /* Massage our args to the form they really have. */ |
826 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
827 | info = (struct bfd_link_info *) in_arg; | |
828 | ||
829 | hplink = hppa_link_hash_table (info); | |
830 | stub_sec = stub_entry->stub_sec; | |
edd21aca | 831 | |
30667bf3 | 832 | /* Make a note of the offset within the stubs for this entry. */ |
74d1c347 | 833 | stub_entry->stub_offset = stub_sec->_raw_size; |
30667bf3 | 834 | loc = stub_sec->contents + stub_entry->stub_offset; |
252b5132 | 835 | |
30667bf3 AM |
836 | stub_bfd = stub_sec->owner; |
837 | ||
838 | switch (stub_entry->stub_type) | |
839 | { | |
840 | case hppa_stub_long_branch: | |
841 | /* Create the long branch. A long branch is formed with "ldil" | |
842 | loading the upper bits of the target address into a register, | |
843 | then branching with "be" which adds in the lower bits. | |
844 | The "be" has its delay slot nullified. */ | |
845 | sym_value = (stub_entry->target_value | |
846 | + stub_entry->target_section->output_offset | |
847 | + stub_entry->target_section->output_section->vma); | |
848 | ||
74d1c347 AM |
849 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel); |
850 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); | |
30667bf3 AM |
851 | bfd_put_32 (stub_bfd, insn, loc); |
852 | ||
74d1c347 AM |
853 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2; |
854 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
855 | bfd_put_32 (stub_bfd, insn, loc + 4); |
856 | ||
857 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
858 | if (info->shared) | |
859 | { | |
860 | /* Output a dynamic relocation for this stub. We only | |
861 | output one PCREL21L reloc per stub, trusting that the | |
862 | dynamic linker will also fix the implied PCREL17R for the | |
863 | second instruction. PCREL21L dynamic relocs had better | |
864 | never be emitted for some other purpose... */ | |
865 | asection *srel; | |
866 | Elf_Internal_Rela outrel; | |
867 | ||
868 | if (stub_entry->h == NULL) | |
edd21aca AM |
869 | { |
870 | (*_bfd_error_handler) | |
30667bf3 AM |
871 | (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"), |
872 | bfd_get_filename (stub_entry->target_section->owner), | |
873 | stub_sec->name, | |
874 | (long) stub_entry->stub_offset, | |
875 | stub_entry->root.string); | |
876 | bfd_set_error (bfd_error_bad_value); | |
877 | return false; | |
edd21aca AM |
878 | } |
879 | ||
30667bf3 AM |
880 | srel = stub_entry->reloc_sec; |
881 | if (srel == NULL) | |
edd21aca AM |
882 | { |
883 | (*_bfd_error_handler) | |
30667bf3 AM |
884 | (_("Could not find relocation section for %s"), |
885 | stub_sec->name); | |
886 | bfd_set_error (bfd_error_bad_value); | |
887 | return false; | |
edd21aca | 888 | } |
252b5132 | 889 | |
30667bf3 AM |
890 | outrel.r_offset = (stub_entry->stub_offset |
891 | + stub_sec->output_offset | |
892 | + stub_sec->output_section->vma); | |
893 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L); | |
894 | outrel.r_addend = sym_value; | |
895 | bfd_elf32_swap_reloca_out (stub_sec->output_section->owner, | |
896 | &outrel, | |
897 | ((Elf32_External_Rela *) | |
898 | srel->contents + srel->reloc_count)); | |
899 | ++srel->reloc_count; | |
252b5132 | 900 | } |
30667bf3 AM |
901 | #endif |
902 | size = 8; | |
edd21aca AM |
903 | break; |
904 | ||
30667bf3 AM |
905 | case hppa_stub_long_branch_shared: |
906 | /* Branches are relative. This is where we are going to. */ | |
907 | sym_value = (stub_entry->target_value | |
908 | + stub_entry->target_section->output_offset | |
909 | + stub_entry->target_section->output_section->vma); | |
910 | ||
911 | /* And this is where we are coming from, more or less. */ | |
912 | sym_value -= (stub_entry->stub_offset | |
913 | + stub_sec->output_offset | |
914 | + stub_sec->output_section->vma); | |
915 | ||
74d1c347 AM |
916 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); |
917 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lsel); | |
918 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); | |
30667bf3 AM |
919 | bfd_put_32 (stub_bfd, insn, loc + 4); |
920 | ||
74d1c347 AM |
921 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rsel) >> 2; |
922 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
923 | bfd_put_32 (stub_bfd, insn, loc + 8); |
924 | size = 12; | |
925 | break; | |
edd21aca | 926 | |
30667bf3 AM |
927 | case hppa_stub_import: |
928 | case hppa_stub_import_shared: | |
929 | sym_value = (stub_entry->h->elf.plt.offset | |
930 | + hplink->splt->output_offset | |
931 | + hplink->splt->output_section->vma | |
932 | - elf_gp (hplink->splt->output_section->owner)); | |
933 | ||
934 | insn = ADDIL_DP; | |
935 | #if R19_STUBS | |
936 | if (stub_entry->stub_type == hppa_stub_import_shared) | |
937 | insn = ADDIL_R19; | |
938 | #endif | |
74d1c347 AM |
939 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lsel), |
940 | insn = hppa_rebuild_insn ((int) insn, val, 21); | |
30667bf3 | 941 | bfd_put_32 (stub_bfd, insn, loc); |
edd21aca | 942 | |
74d1c347 AM |
943 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rsel); |
944 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); | |
30667bf3 | 945 | bfd_put_32 (stub_bfd, insn, loc + 4); |
252b5132 | 946 | |
30667bf3 AM |
947 | if (hplink->multi_subspace) |
948 | { | |
74d1c347 AM |
949 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rsel); |
950 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); | |
30667bf3 | 951 | bfd_put_32 (stub_bfd, insn, loc + 8); |
252b5132 | 952 | |
74d1c347 AM |
953 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); |
954 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
955 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); | |
956 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); | |
252b5132 | 957 | |
30667bf3 AM |
958 | size = 28; |
959 | } | |
960 | else | |
961 | { | |
74d1c347 AM |
962 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); |
963 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rsel); | |
964 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); | |
30667bf3 | 965 | bfd_put_32 (stub_bfd, insn, loc + 12); |
252b5132 | 966 | |
30667bf3 AM |
967 | size = 16; |
968 | } | |
252b5132 | 969 | |
30667bf3 AM |
970 | if (!info->shared |
971 | && stub_entry->h != NULL | |
972 | && stub_entry->h->pic_call) | |
252b5132 | 973 | { |
30667bf3 AM |
974 | /* Build the .plt entry needed to call a PIC function from |
975 | statically linked code. We don't need any relocs. */ | |
976 | bfd *dynobj; | |
977 | struct elf32_hppa_link_hash_entry *eh; | |
978 | bfd_vma value; | |
252b5132 | 979 | |
74d1c347 | 980 | dynobj = hplink->root.dynobj; |
30667bf3 | 981 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; |
252b5132 | 982 | |
30667bf3 AM |
983 | BFD_ASSERT (eh->elf.root.type == bfd_link_hash_defined |
984 | || eh->elf.root.type == bfd_link_hash_defweak); | |
252b5132 | 985 | |
30667bf3 AM |
986 | value = (eh->elf.root.u.def.value |
987 | + eh->elf.root.u.def.section->output_offset | |
988 | + eh->elf.root.u.def.section->output_section->vma); | |
252b5132 | 989 | |
30667bf3 | 990 | /* Fill in the entry in the procedure linkage table. |
252b5132 | 991 | |
30667bf3 | 992 | The format of a plt entry is |
74d1c347 AM |
993 | <funcaddr> |
994 | <__gp>. */ | |
252b5132 | 995 | |
30667bf3 AM |
996 | bfd_put_32 (hplink->splt->owner, value, |
997 | hplink->splt->contents + eh->elf.plt.offset); | |
998 | value = elf_gp (hplink->splt->output_section->owner); | |
999 | bfd_put_32 (hplink->splt->owner, value, | |
1000 | hplink->splt->contents + eh->elf.plt.offset + 4); | |
252b5132 | 1001 | } |
30667bf3 | 1002 | break; |
252b5132 | 1003 | |
30667bf3 AM |
1004 | case hppa_stub_export: |
1005 | /* Branches are relative. This is where we are going to. */ | |
1006 | sym_value = (stub_entry->target_value | |
1007 | + stub_entry->target_section->output_offset | |
1008 | + stub_entry->target_section->output_section->vma); | |
252b5132 | 1009 | |
30667bf3 AM |
1010 | /* And this is where we are coming from. */ |
1011 | sym_value -= (stub_entry->stub_offset | |
1012 | + stub_sec->output_offset | |
1013 | + stub_sec->output_section->vma); | |
edd21aca | 1014 | |
30667bf3 AM |
1015 | if (sym_value - 8 + 0x40000 >= 0x80000) |
1016 | { | |
edd21aca | 1017 | (*_bfd_error_handler) |
30667bf3 AM |
1018 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), |
1019 | bfd_get_filename (stub_entry->target_section->owner), | |
1020 | stub_sec->name, | |
1021 | (long) stub_entry->stub_offset, | |
1022 | stub_entry->root.string); | |
1023 | bfd_set_error (bfd_error_bad_value); | |
edd21aca | 1024 | return false; |
252b5132 | 1025 | } |
30667bf3 | 1026 | |
74d1c347 AM |
1027 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; |
1028 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17); | |
30667bf3 AM |
1029 | bfd_put_32 (stub_bfd, insn, loc); |
1030 | ||
74d1c347 AM |
1031 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); |
1032 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); | |
1033 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); | |
1034 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
1035 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); | |
30667bf3 AM |
1036 | |
1037 | /* Point the function symbol at the stub. */ | |
1038 | stub_entry->h->elf.root.u.def.section = stub_sec; | |
74d1c347 | 1039 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size; |
30667bf3 AM |
1040 | |
1041 | size = 24; | |
1042 | break; | |
1043 | ||
1044 | default: | |
1045 | BFD_FAIL (); | |
1046 | return false; | |
252b5132 RH |
1047 | } |
1048 | ||
74d1c347 | 1049 | stub_sec->_raw_size += size; |
252b5132 RH |
1050 | return true; |
1051 | } | |
1052 | ||
30667bf3 AM |
1053 | #undef LDIL_R1 |
1054 | #undef BE_SR4_R1 | |
1055 | #undef BL_R1 | |
1056 | #undef ADDIL_R1 | |
1057 | #undef DEPI_R1 | |
1058 | #undef ADDIL_DP | |
1059 | #undef LDW_R1_R21 | |
1060 | #undef LDW_R1_DLT | |
1061 | #undef LDW_R1_R19 | |
1062 | #undef ADDIL_R19 | |
1063 | #undef LDW_R1_DP | |
1064 | #undef LDSID_R21_R1 | |
1065 | #undef MTSP_R1 | |
1066 | #undef BE_SR0_R21 | |
1067 | #undef STW_RP | |
1068 | #undef BV_R0_R21 | |
1069 | #undef BL_RP | |
1070 | #undef NOP | |
1071 | #undef LDW_RP | |
1072 | #undef LDSID_RP_R1 | |
1073 | #undef BE_SR0_RP | |
252b5132 | 1074 | |
edd21aca | 1075 | |
30667bf3 AM |
1076 | /* As above, but don't actually build the stub. Just bump offset so |
1077 | we know stub section sizes. */ | |
1078 | ||
1079 | static boolean | |
1080 | hppa_size_one_stub (gen_entry, in_arg) | |
1081 | struct bfd_hash_entry *gen_entry; | |
1082 | PTR in_arg; | |
252b5132 | 1083 | { |
30667bf3 AM |
1084 | struct elf32_hppa_stub_hash_entry *stub_entry; |
1085 | struct elf32_hppa_link_hash_table *hplink; | |
1086 | int size; | |
1087 | ||
1088 | /* Massage our args to the form they really have. */ | |
1089 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
1090 | hplink = (struct elf32_hppa_link_hash_table *) in_arg; | |
1091 | ||
1092 | if (stub_entry->stub_type == hppa_stub_long_branch) | |
74d1c347 AM |
1093 | { |
1094 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1095 | if (stub_entry->reloc_sec != NULL) | |
1096 | stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela); | |
1097 | #endif | |
1098 | size = 8; | |
1099 | } | |
30667bf3 AM |
1100 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared) |
1101 | size = 12; | |
1102 | else if (stub_entry->stub_type == hppa_stub_export) | |
1103 | size = 24; | |
74d1c347 | 1104 | else /* hppa_stub_import or hppa_stub_import_shared. */ |
252b5132 | 1105 | { |
30667bf3 AM |
1106 | if (hplink->multi_subspace) |
1107 | size = 28; | |
1108 | else | |
1109 | size = 16; | |
1110 | } | |
252b5132 | 1111 | |
74d1c347 | 1112 | stub_entry->stub_sec->_raw_size += size; |
30667bf3 AM |
1113 | return true; |
1114 | } | |
252b5132 | 1115 | |
252b5132 | 1116 | |
30667bf3 AM |
1117 | /* Return nonzero if ABFD represents an HPPA ELF32 file. |
1118 | Additionally we set the default architecture and machine. */ | |
1119 | ||
1120 | static boolean | |
1121 | elf32_hppa_object_p (abfd) | |
1122 | bfd *abfd; | |
1123 | { | |
1124 | unsigned int flags = elf_elfheader (abfd)->e_flags; | |
252b5132 | 1125 | |
30667bf3 AM |
1126 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
1127 | { | |
1128 | case EFA_PARISC_1_0: | |
1129 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
1130 | case EFA_PARISC_1_1: | |
1131 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
1132 | case EFA_PARISC_2_0: | |
1133 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
1134 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
1135 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
1136 | } | |
1137 | return true; | |
252b5132 RH |
1138 | } |
1139 | ||
30667bf3 | 1140 | |
252b5132 RH |
1141 | /* Undo the generic ELF code's subtraction of section->vma from the |
1142 | value of each external symbol. */ | |
1143 | ||
1144 | static boolean | |
1145 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
5f771d47 ILT |
1146 | bfd *abfd ATTRIBUTE_UNUSED; |
1147 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1148 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; | |
1149 | const char **namep ATTRIBUTE_UNUSED; | |
1150 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1151 | asection **secp; |
1152 | bfd_vma *valp; | |
1153 | { | |
1154 | *valp += (*secp)->vma; | |
1155 | return true; | |
1156 | } | |
1157 | ||
252b5132 | 1158 | |
30667bf3 AM |
1159 | /* Create the .plt and .got sections, and set up our hash table |
1160 | short-cuts to various dynamic sections. */ | |
1161 | ||
1162 | static boolean | |
1163 | elf32_hppa_create_dynamic_sections (abfd, info) | |
1164 | bfd *abfd; | |
1165 | struct bfd_link_info *info; | |
252b5132 | 1166 | { |
30667bf3 AM |
1167 | flagword flags; |
1168 | asection *s; | |
1169 | struct elf32_hppa_link_hash_table *hplink; | |
edd21aca | 1170 | |
30667bf3 AM |
1171 | /* Don't try to create the .plt and .got twice. */ |
1172 | hplink = hppa_link_hash_table (info); | |
1173 | if (hplink->splt != NULL) | |
1174 | return true; | |
edd21aca | 1175 | |
30667bf3 AM |
1176 | /* Call the generic code to do most of the work. */ |
1177 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1178 | return false; | |
252b5132 | 1179 | |
30667bf3 AM |
1180 | /* Our .plt just contains pointers. I suppose we should be using |
1181 | .plt.got but .plt.got doesn't make too much sense without a .plt | |
1182 | section. Set the flags to say the .plt isn't executable. */ | |
1183 | s = bfd_get_section_by_name (abfd, ".plt"); | |
1184 | flags = bfd_get_section_flags (abfd, s); | |
1185 | if (! bfd_set_section_flags (abfd, s, flags & ~SEC_CODE)) | |
1186 | return false; | |
1187 | hplink->splt = s; | |
1188 | hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
1189 | ||
1190 | hplink->sgot = bfd_get_section_by_name (abfd, ".got"); | |
1191 | hplink->srelgot = bfd_make_section (abfd, ".rela.got"); | |
1192 | if (hplink->srelgot == NULL | |
1193 | || ! bfd_set_section_flags (abfd, hplink->srelgot, | |
1194 | (SEC_ALLOC | |
1195 | | SEC_LOAD | |
1196 | | SEC_HAS_CONTENTS | |
1197 | | SEC_IN_MEMORY | |
1198 | | SEC_LINKER_CREATED | |
1199 | | SEC_READONLY)) | |
1200 | || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2)) | |
1201 | return false; | |
edd21aca | 1202 | |
30667bf3 AM |
1203 | hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
1204 | hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
1205 | ||
1206 | return true; | |
1207 | } | |
1208 | ||
1209 | ||
1210 | /* Look through the relocs for a section during the first phase, and | |
1211 | allocate space in the global offset table or procedure linkage | |
1212 | table. At this point we haven't necessarily read all the input | |
1213 | files. */ | |
252b5132 RH |
1214 | |
1215 | static boolean | |
30667bf3 AM |
1216 | elf32_hppa_check_relocs (abfd, info, sec, relocs) |
1217 | bfd *abfd; | |
1218 | struct bfd_link_info *info; | |
1219 | asection *sec; | |
1220 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1221 | { |
30667bf3 AM |
1222 | bfd *dynobj; |
1223 | Elf_Internal_Shdr *symtab_hdr; | |
1224 | struct elf_link_hash_entry **sym_hashes; | |
1225 | bfd_signed_vma *local_got_refcounts; | |
1226 | const Elf_Internal_Rela *rel; | |
1227 | const Elf_Internal_Rela *rel_end; | |
1228 | struct elf32_hppa_link_hash_table *hplink; | |
1229 | asection *sreloc; | |
1230 | asection *stubreloc; | |
1231 | ||
1232 | if (info->relocateable) | |
1233 | return true; | |
1234 | ||
1235 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 1236 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1237 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1238 | sym_hashes = elf_sym_hashes (abfd); | |
1239 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1240 | sreloc = NULL; | |
1241 | stubreloc = NULL; | |
1242 | ||
1243 | rel_end = relocs + sec->reloc_count; | |
1244 | for (rel = relocs; rel < rel_end; rel++) | |
1245 | { | |
1246 | enum { | |
1247 | NEED_GOT = 1, | |
1248 | NEED_PLT = 2, | |
1249 | NEED_DYNREL = 4, | |
1250 | #if LONG_BRANCH_PIC_IN_SHLIB | |
74d1c347 | 1251 | NEED_STUBREL = 0, /* We won't be needing them in this case. */ |
30667bf3 | 1252 | #else |
74d1c347 | 1253 | NEED_STUBREL = 8, |
30667bf3 | 1254 | #endif |
74d1c347 | 1255 | PLT_PLABEL = 16 |
30667bf3 | 1256 | }; |
edd21aca | 1257 | |
30667bf3 AM |
1258 | unsigned int r_symndx, r_type; |
1259 | struct elf32_hppa_link_hash_entry *h; | |
1260 | int need_entry; | |
252b5132 | 1261 | |
30667bf3 | 1262 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 | 1263 | |
30667bf3 AM |
1264 | if (r_symndx < symtab_hdr->sh_info) |
1265 | h = NULL; | |
1266 | else | |
1267 | h = ((struct elf32_hppa_link_hash_entry *) | |
1268 | sym_hashes[r_symndx - symtab_hdr->sh_info]); | |
252b5132 | 1269 | |
30667bf3 | 1270 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1271 | |
30667bf3 AM |
1272 | switch (r_type) |
1273 | { | |
1274 | case R_PARISC_DLTIND14F: | |
1275 | case R_PARISC_DLTIND14R: | |
1276 | case R_PARISC_DLTIND21L: | |
1277 | /* This symbol requires a global offset table entry. */ | |
1278 | need_entry = NEED_GOT; | |
1279 | ||
1280 | /* Mark this section as containing PIC code. */ | |
1281 | sec->flags |= SEC_HAS_GOT_REF; | |
1282 | break; | |
1283 | ||
1284 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ | |
1285 | case R_PARISC_PLABEL21L: | |
1286 | case R_PARISC_PLABEL32: | |
74d1c347 AM |
1287 | /* If the addend is non-zero, we break badly. */ |
1288 | BFD_ASSERT (rel->r_addend == 0); | |
1289 | ||
1290 | /* If we are creating a shared library, then we need to | |
1291 | create a PLT entry for all PLABELs, because PLABELs with | |
1292 | local symbols may be passed via a pointer to another | |
1293 | object. Additionally, output a dynamic relocation | |
1294 | pointing to the PLT entry. */ | |
1295 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; | |
30667bf3 AM |
1296 | break; |
1297 | ||
1298 | case R_PARISC_PCREL12F: | |
1299 | case R_PARISC_PCREL17C: | |
1300 | case R_PARISC_PCREL17F: | |
1301 | case R_PARISC_PCREL22F: | |
1302 | /* Handle calls, and function pointers as they might need to | |
1303 | go through the .plt, and might require long branch stubs. */ | |
1304 | if (h == NULL) | |
1305 | { | |
1306 | /* We know local syms won't need a .plt entry, and if | |
1307 | they need a long branch stub we can't guarantee that | |
1308 | we can reach the stub. So just flag an error later | |
1309 | if we're doing a shared link and find we need a long | |
1310 | branch stub. */ | |
1311 | continue; | |
1312 | } | |
1313 | else | |
1314 | { | |
1315 | /* Global symbols will need a .plt entry if they remain | |
1316 | global, and in most cases won't need a long branch | |
1317 | stub. Unfortunately, we have to cater for the case | |
1318 | where a symbol is forced local by versioning, or due | |
1319 | to symbolic linking, and we lose the .plt entry. */ | |
1320 | need_entry = NEED_PLT | NEED_STUBREL; | |
1321 | } | |
1322 | break; | |
1323 | ||
1324 | case R_PARISC_SEGBASE: /* Used to set segment base. */ | |
1325 | case R_PARISC_SEGREL32: /* Relative reloc. */ | |
1326 | case R_PARISC_PCREL14F: /* PC relative load/store. */ | |
1327 | case R_PARISC_PCREL14R: | |
1328 | case R_PARISC_PCREL17R: /* External branches. */ | |
1329 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */ | |
1330 | /* We don't need to propagate the relocation if linking a | |
1331 | shared object since these are section relative. */ | |
1332 | continue; | |
1333 | ||
1334 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ | |
1335 | case R_PARISC_DPREL14R: | |
1336 | case R_PARISC_DPREL21L: | |
1337 | if (info->shared) | |
1338 | { | |
1339 | (*_bfd_error_handler) | |
1340 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
1341 | bfd_get_filename (abfd), | |
1342 | elf_hppa_howto_table[r_type].name); | |
1343 | bfd_set_error (bfd_error_bad_value); | |
1344 | return false; | |
1345 | } | |
1346 | /* Fall through. */ | |
1347 | ||
1348 | case R_PARISC_DIR17F: /* Used for external branches. */ | |
1349 | case R_PARISC_DIR17R: | |
1350 | case R_PARISC_DIR14R: /* Used for load/store from absolute locn. */ | |
1351 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */ | |
1352 | #if 1 | |
1353 | /* Help debug shared library creation. Any of the above | |
1354 | relocs can be used in shared libs, but they may cause | |
1355 | pages to become unshared. */ | |
1356 | if (info->shared) | |
1357 | { | |
1358 | (*_bfd_error_handler) | |
1359 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"), | |
1360 | bfd_get_filename (abfd), | |
1361 | elf_hppa_howto_table[r_type].name); | |
1362 | } | |
1363 | /* Fall through. */ | |
1364 | #endif | |
1365 | ||
1366 | case R_PARISC_DIR32: /* .word, PARISC.unwind relocs. */ | |
1367 | /* We may want to output a dynamic relocation later. */ | |
1368 | need_entry = NEED_DYNREL; | |
1369 | break; | |
1370 | ||
1371 | /* This relocation describes the C++ object vtable hierarchy. | |
1372 | Reconstruct it for later use during GC. */ | |
1373 | case R_PARISC_GNU_VTINHERIT: | |
1374 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, | |
1375 | &h->elf, rel->r_offset)) | |
1376 | return false; | |
1377 | continue; | |
1378 | ||
1379 | /* This relocation describes which C++ vtable entries are actually | |
1380 | used. Record for later use during GC. */ | |
1381 | case R_PARISC_GNU_VTENTRY: | |
1382 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, | |
1383 | &h->elf, rel->r_offset)) | |
1384 | return false; | |
1385 | continue; | |
1386 | ||
1387 | default: | |
1388 | continue; | |
1389 | } | |
1390 | ||
1391 | /* Now carry out our orders. */ | |
1392 | if (need_entry & NEED_GOT) | |
1393 | { | |
1394 | /* Allocate space for a GOT entry, as well as a dynamic | |
1395 | relocation for this entry. */ | |
1396 | if (dynobj == NULL) | |
74d1c347 | 1397 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1398 | |
1399 | if (hplink->sgot == NULL) | |
1400 | { | |
1401 | if (! elf32_hppa_create_dynamic_sections (dynobj, info)) | |
1402 | return false; | |
1403 | } | |
1404 | ||
1405 | if (h != NULL) | |
1406 | { | |
1407 | if (h->elf.got.refcount == -1) | |
1408 | { | |
1409 | h->elf.got.refcount = 1; | |
1410 | ||
1411 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1412 | if (h->elf.dynindx == -1) | |
1413 | { | |
1414 | if (! bfd_elf32_link_record_dynamic_symbol (info, | |
1415 | &h->elf)) | |
1416 | return false; | |
1417 | } | |
1418 | ||
1419 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1420 | hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
1421 | } | |
1422 | else | |
1423 | h->elf.got.refcount += 1; | |
1424 | } | |
1425 | else | |
1426 | { | |
1427 | /* This is a global offset table entry for a local symbol. */ | |
1428 | if (local_got_refcounts == NULL) | |
1429 | { | |
1430 | size_t size; | |
1431 | ||
74d1c347 AM |
1432 | /* Allocate space for local got offsets and local |
1433 | plt offsets. Done this way to save polluting | |
1434 | elf_obj_tdata with another target specific | |
1435 | pointer. */ | |
1436 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
30667bf3 AM |
1437 | local_got_refcounts = ((bfd_signed_vma *) |
1438 | bfd_alloc (abfd, size)); | |
1439 | if (local_got_refcounts == NULL) | |
1440 | return false; | |
1441 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1442 | memset (local_got_refcounts, -1, size); | |
1443 | } | |
1444 | if (local_got_refcounts[r_symndx] == -1) | |
1445 | { | |
1446 | local_got_refcounts[r_symndx] = 1; | |
1447 | ||
1448 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1449 | if (info->shared) | |
1450 | { | |
1451 | /* If we are generating a shared object, we need to | |
1452 | output a reloc so that the dynamic linker can | |
1453 | adjust this GOT entry (because the address | |
1454 | the shared library is loaded at is not fixed). */ | |
1455 | hplink->srelgot->_raw_size += | |
1456 | sizeof (Elf32_External_Rela); | |
1457 | } | |
1458 | } | |
1459 | else | |
1460 | local_got_refcounts[r_symndx] += 1; | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | if (need_entry & NEED_PLT) | |
1465 | { | |
1466 | /* If we are creating a shared library, and this is a reloc | |
1467 | against a weak symbol or a global symbol in a dynamic | |
1468 | object, then we will be creating an import stub and a | |
1469 | .plt entry for the symbol. Similarly, on a normal link | |
1470 | to symbols defined in a dynamic object we'll need the | |
1471 | import stub and a .plt entry. We don't know yet whether | |
1472 | the symbol is defined or not, so make an entry anyway and | |
1473 | clean up later in adjust_dynamic_symbol. */ | |
1474 | if ((sec->flags & SEC_ALLOC) != 0) | |
1475 | { | |
74d1c347 | 1476 | if (h != NULL) |
30667bf3 | 1477 | { |
74d1c347 AM |
1478 | if (h->elf.plt.refcount == -1) |
1479 | { | |
1480 | h->elf.plt.refcount = 1; | |
1481 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1482 | } | |
1483 | else | |
1484 | h->elf.plt.refcount += 1; | |
1485 | ||
1486 | /* If this .plt entry is for a plabel, we need an | |
1487 | extra word for ld.so. adjust_dynamic_symbol will | |
1488 | also keep the entry even if it appears to be | |
1489 | local. */ | |
1490 | if (need_entry & PLT_PLABEL) | |
1491 | h->plabel = 1; | |
1492 | } | |
1493 | else if (need_entry & PLT_PLABEL) | |
1494 | { | |
1495 | int indx; | |
1496 | ||
1497 | if (local_got_refcounts == NULL) | |
1498 | { | |
1499 | size_t size; | |
1500 | ||
1501 | /* Allocate space for local got offsets and local | |
1502 | plt offsets. */ | |
1503 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
1504 | local_got_refcounts = ((bfd_signed_vma *) | |
1505 | bfd_alloc (abfd, size)); | |
1506 | if (local_got_refcounts == NULL) | |
1507 | return false; | |
1508 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1509 | memset (local_got_refcounts, -1, size); | |
1510 | } | |
1511 | indx = r_symndx + symtab_hdr->sh_info; | |
1512 | if (local_got_refcounts[indx] == -1) | |
1513 | local_got_refcounts[indx] = 1; | |
1514 | else | |
1515 | local_got_refcounts[indx] += 1; | |
30667bf3 | 1516 | } |
30667bf3 AM |
1517 | } |
1518 | } | |
1519 | ||
1520 | if (need_entry & (NEED_DYNREL | NEED_STUBREL)) | |
1521 | { | |
1522 | /* Flag this symbol as having a non-got, non-plt reference | |
1523 | so that we generate copy relocs if it turns out to be | |
1524 | dynamic. */ | |
1525 | if (h != NULL) | |
1526 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
1527 | ||
1528 | /* If we are creating a shared library then we need to copy | |
1529 | the reloc into the shared library. However, if we are | |
1530 | linking with -Bsymbolic, we need only copy absolute | |
1531 | relocs or relocs against symbols that are not defined in | |
1532 | an object we are including in the link. PC- or DP- or | |
1533 | DLT-relative relocs against any local sym or global sym | |
1534 | with DEF_REGULAR set, can be discarded. At this point we | |
1535 | have not seen all the input files, so it is possible that | |
1536 | DEF_REGULAR is not set now but will be set later (it is | |
1537 | never cleared). We account for that possibility below by | |
1538 | storing information in the reloc_entries field of the | |
1539 | hash table entry. | |
1540 | ||
1541 | A similar situation to the -Bsymbolic case occurs when | |
1542 | creating shared libraries and symbol visibility changes | |
1543 | render the symbol local. | |
1544 | ||
1545 | As it turns out, all the relocs we will be creating here | |
1546 | are absolute, so we cannot remove them on -Bsymbolic | |
1547 | links or visibility changes anyway. A STUB_REL reloc | |
1548 | is absolute too, as in that case it is the reloc in the | |
1549 | stub we will be creating, rather than copying the PCREL | |
1550 | reloc in the branch. */ | |
1551 | if ((sec->flags & SEC_ALLOC) != 0 | |
1552 | && info->shared | |
1553 | #if RELATIVE_DYNAMIC_RELOCS | |
1554 | && (!info->symbolic | |
1555 | || is_absolute_reloc (r_type) | |
1556 | || (h != NULL | |
1557 | && ((h->elf.elf_link_hash_flags | |
1558 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
1559 | || h->elf.root.type == bfd_link_hash_defweak))) | |
1560 | #endif | |
1561 | ) | |
1562 | { | |
1563 | boolean doit; | |
1564 | asection *srel; | |
1565 | ||
1566 | srel = sreloc; | |
1567 | if ((need_entry & NEED_STUBREL)) | |
1568 | srel = stubreloc; | |
1569 | ||
1570 | /* Create a reloc section in dynobj and make room for | |
1571 | this reloc. */ | |
1572 | if (srel == NULL) | |
1573 | { | |
1574 | char *name; | |
1575 | ||
1576 | if (dynobj == NULL) | |
74d1c347 | 1577 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1578 | |
1579 | name = bfd_elf_string_from_elf_section | |
1580 | (abfd, | |
1581 | elf_elfheader (abfd)->e_shstrndx, | |
1582 | elf_section_data (sec)->rel_hdr.sh_name); | |
1583 | if (name == NULL) | |
1584 | { | |
1585 | (*_bfd_error_handler) | |
1586 | (_("Could not find relocation section for %s"), | |
1587 | sec->name); | |
1588 | bfd_set_error (bfd_error_bad_value); | |
1589 | return false; | |
1590 | } | |
1591 | ||
1592 | if ((need_entry & NEED_STUBREL)) | |
1593 | { | |
74d1c347 | 1594 | size_t len = strlen (name) + sizeof (STUB_SUFFIX); |
30667bf3 AM |
1595 | char *newname = bfd_malloc (len); |
1596 | ||
1597 | if (newname == NULL) | |
1598 | return false; | |
1599 | strcpy (newname, name); | |
1600 | strcpy (newname + len - sizeof (STUB_SUFFIX), | |
1601 | STUB_SUFFIX); | |
1602 | name = newname; | |
1603 | } | |
1604 | ||
1605 | srel = bfd_get_section_by_name (dynobj, name); | |
1606 | if (srel == NULL) | |
1607 | { | |
1608 | flagword flags; | |
1609 | ||
1610 | srel = bfd_make_section (dynobj, name); | |
1611 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1612 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1613 | if ((sec->flags & SEC_ALLOC) != 0) | |
1614 | flags |= SEC_ALLOC | SEC_LOAD; | |
1615 | if (srel == NULL | |
1616 | || !bfd_set_section_flags (dynobj, srel, flags) | |
1617 | || !bfd_set_section_alignment (dynobj, srel, 2)) | |
1618 | return false; | |
1619 | } | |
1620 | else if ((need_entry & NEED_STUBREL)) | |
1621 | free (name); | |
1622 | ||
1623 | if ((need_entry & NEED_STUBREL)) | |
1624 | stubreloc = srel; | |
1625 | else | |
1626 | sreloc = srel; | |
1627 | } | |
1628 | ||
1629 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1630 | /* If this is a function call, we only need one dynamic | |
1631 | reloc for the stub as all calls to a particular | |
1632 | function will go through the same stub. Actually, a | |
1633 | long branch stub needs two relocations, but we count | |
1634 | on some intelligence on the part of the dynamic | |
1635 | linker. */ | |
1636 | if ((need_entry & NEED_STUBREL)) | |
1637 | { | |
1638 | doit = h->stub_reloc_sec != stubreloc; | |
1639 | h->stub_reloc_sec = stubreloc; | |
1640 | } | |
1641 | else | |
1642 | #endif | |
1643 | doit = 1; | |
1644 | ||
1645 | if (doit) | |
1646 | { | |
1647 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1648 | ||
1649 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
1650 | /* Keep track of relocations we have entered for | |
1651 | this global symbol, so that we can discard them | |
1652 | later if necessary. */ | |
1653 | if (h != NULL | |
1654 | && (0 | |
1655 | #if RELATIVE_DYNAMIC_RELOCS | |
1656 | || ! is_absolute_reloc (rtype) | |
1657 | #endif | |
1658 | || (need_entry & NEED_STUBREL))) | |
1659 | { | |
1660 | struct elf32_hppa_dyn_reloc_entry *p; | |
252b5132 | 1661 | |
30667bf3 AM |
1662 | for (p = h->reloc_entries; p != NULL; p = p->next) |
1663 | if (p->section == srel) | |
1664 | break; | |
edd21aca | 1665 | |
30667bf3 AM |
1666 | if (p == NULL) |
1667 | { | |
1668 | p = ((struct elf32_hppa_dyn_reloc_entry *) | |
1669 | bfd_alloc (dynobj, sizeof *p)); | |
1670 | if (p == NULL) | |
1671 | return false; | |
1672 | p->next = h->reloc_entries; | |
1673 | h->reloc_entries = p; | |
1674 | p->section = srel; | |
1675 | p->count = 0; | |
1676 | } | |
edd21aca | 1677 | |
30667bf3 AM |
1678 | /* NEED_STUBREL and NEED_DYNREL are never both |
1679 | set. Leave the count at zero for the | |
1680 | NEED_STUBREL case as we only ever have one | |
1681 | stub reloc per section per symbol, and this | |
1682 | simplifies code in hppa_discard_copies. */ | |
1683 | if (! (need_entry & NEED_STUBREL)) | |
1684 | ++p->count; | |
1685 | } | |
1686 | #endif | |
1687 | } | |
1688 | } | |
1689 | } | |
1690 | } | |
edd21aca AM |
1691 | |
1692 | return true; | |
1693 | } | |
1694 | ||
30667bf3 AM |
1695 | |
1696 | /* Return the section that should be marked against garbage collection | |
1697 | for a given relocation. */ | |
1698 | ||
1699 | static asection * | |
1700 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) | |
1701 | bfd *abfd; | |
1702 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1703 | Elf_Internal_Rela *rel; | |
1704 | struct elf_link_hash_entry *h; | |
1705 | Elf_Internal_Sym *sym; | |
1706 | { | |
1707 | if (h != NULL) | |
1708 | { | |
1709 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1710 | { | |
1711 | case R_PARISC_GNU_VTINHERIT: | |
1712 | case R_PARISC_GNU_VTENTRY: | |
1713 | break; | |
1714 | ||
1715 | default: | |
1716 | switch (h->root.type) | |
1717 | { | |
1718 | case bfd_link_hash_defined: | |
1719 | case bfd_link_hash_defweak: | |
1720 | return h->root.u.def.section; | |
1721 | ||
1722 | case bfd_link_hash_common: | |
1723 | return h->root.u.c.p->section; | |
1724 | ||
1725 | default: | |
1726 | break; | |
1727 | } | |
1728 | } | |
1729 | } | |
1730 | else | |
1731 | { | |
1732 | if (!(elf_bad_symtab (abfd) | |
1733 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1734 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1735 | && sym->st_shndx != SHN_COMMON)) | |
1736 | { | |
1737 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1738 | } | |
1739 | } | |
1740 | ||
1741 | return NULL; | |
1742 | } | |
1743 | ||
1744 | ||
1745 | /* Update the got and plt entry reference counts for the section being | |
1746 | removed. */ | |
edd21aca AM |
1747 | |
1748 | static boolean | |
30667bf3 AM |
1749 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) |
1750 | bfd *abfd; | |
1751 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1752 | asection *sec; | |
1753 | const Elf_Internal_Rela *relocs; | |
edd21aca | 1754 | { |
30667bf3 AM |
1755 | Elf_Internal_Shdr *symtab_hdr; |
1756 | struct elf_link_hash_entry **sym_hashes; | |
1757 | bfd_signed_vma *local_got_refcounts; | |
74d1c347 | 1758 | bfd_signed_vma *local_plt_refcounts; |
30667bf3 AM |
1759 | const Elf_Internal_Rela *rel, *relend; |
1760 | unsigned long r_symndx; | |
1761 | struct elf_link_hash_entry *h; | |
74d1c347 | 1762 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
1763 | bfd *dynobj; |
1764 | asection *sgot; | |
1765 | asection *srelgot; | |
1766 | ||
1767 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1768 | sym_hashes = elf_sym_hashes (abfd); | |
1769 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
74d1c347 AM |
1770 | local_plt_refcounts = local_got_refcounts; |
1771 | if (local_plt_refcounts != NULL) | |
1772 | local_plt_refcounts += symtab_hdr->sh_info; | |
1773 | hplink = hppa_link_hash_table (info); | |
1774 | dynobj = hplink->root.dynobj; | |
30667bf3 AM |
1775 | if (dynobj == NULL) |
1776 | return true; | |
1777 | ||
74d1c347 AM |
1778 | sgot = hplink->sgot; |
1779 | srelgot = hplink->srelgot; | |
30667bf3 AM |
1780 | |
1781 | relend = relocs + sec->reloc_count; | |
1782 | for (rel = relocs; rel < relend; rel++) | |
1783 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1784 | { | |
1785 | case R_PARISC_DLTIND14F: | |
1786 | case R_PARISC_DLTIND14R: | |
1787 | case R_PARISC_DLTIND21L: | |
1788 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1789 | if (r_symndx >= symtab_hdr->sh_info) | |
1790 | { | |
1791 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1792 | if (h->got.refcount > 0) | |
1793 | { | |
1794 | h->got.refcount -= 1; | |
1795 | if (h->got.refcount == 0) | |
1796 | { | |
74d1c347 | 1797 | sgot->_raw_size -= GOT_ENTRY_SIZE; |
30667bf3 AM |
1798 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); |
1799 | } | |
1800 | } | |
1801 | } | |
1802 | else if (local_got_refcounts != NULL) | |
1803 | { | |
1804 | if (local_got_refcounts[r_symndx] > 0) | |
1805 | { | |
1806 | local_got_refcounts[r_symndx] -= 1; | |
1807 | if (local_got_refcounts[r_symndx] == 0) | |
1808 | { | |
74d1c347 | 1809 | sgot->_raw_size -= GOT_ENTRY_SIZE; |
30667bf3 AM |
1810 | if (info->shared) |
1811 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
1812 | } | |
1813 | } | |
1814 | } | |
1815 | break; | |
edd21aca | 1816 | |
30667bf3 AM |
1817 | case R_PARISC_PCREL12F: |
1818 | case R_PARISC_PCREL17C: | |
1819 | case R_PARISC_PCREL17F: | |
1820 | case R_PARISC_PCREL22F: | |
1821 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1822 | if (r_symndx >= symtab_hdr->sh_info) | |
1823 | { | |
1824 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1825 | if (h->plt.refcount > 0) | |
1826 | h->plt.refcount -= 1; | |
1827 | } | |
1828 | break; | |
edd21aca | 1829 | |
74d1c347 AM |
1830 | case R_PARISC_PLABEL14R: |
1831 | case R_PARISC_PLABEL21L: | |
1832 | case R_PARISC_PLABEL32: | |
1833 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1834 | if (r_symndx >= symtab_hdr->sh_info) | |
1835 | { | |
1836 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1837 | if (h->plt.refcount > 0) | |
1838 | h->plt.refcount -= 1; | |
1839 | } | |
1840 | else if (local_plt_refcounts != NULL) | |
1841 | { | |
1842 | if (local_plt_refcounts[r_symndx] > 0) | |
1843 | local_plt_refcounts[r_symndx] -= 1; | |
1844 | } | |
1845 | break; | |
1846 | ||
30667bf3 AM |
1847 | default: |
1848 | break; | |
1849 | } | |
252b5132 | 1850 | |
252b5132 RH |
1851 | return true; |
1852 | } | |
1853 | ||
252b5132 | 1854 | |
74d1c347 AM |
1855 | /* Our own version of hide_symbol, so that we can keep plt entries for |
1856 | plabels. */ | |
1857 | ||
1858 | static void | |
1859 | elf32_hppa_hide_symbol (info, h) | |
1860 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1861 | struct elf_link_hash_entry *h; | |
1862 | { | |
1863 | h->dynindx = -1; | |
1864 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel) | |
1865 | { | |
1866 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1867 | h->plt.offset = (bfd_vma) -1; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | ||
30667bf3 AM |
1872 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1873 | regular object. The current definition is in some section of the | |
1874 | dynamic object, but we're not including those sections. We have to | |
1875 | change the definition to something the rest of the link can | |
1876 | understand. */ | |
252b5132 | 1877 | |
30667bf3 AM |
1878 | static boolean |
1879 | elf32_hppa_adjust_dynamic_symbol (info, h) | |
1880 | struct bfd_link_info *info; | |
1881 | struct elf_link_hash_entry *h; | |
252b5132 | 1882 | { |
30667bf3 AM |
1883 | bfd *dynobj; |
1884 | struct elf32_hppa_link_hash_table *hplink; | |
1885 | asection *s; | |
1886 | ||
30667bf3 | 1887 | hplink = hppa_link_hash_table (info); |
74d1c347 | 1888 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1889 | |
1890 | /* If this is a function, put it in the procedure linkage table. We | |
1891 | will fill in the contents of the procedure linkage table later, | |
1892 | when we know the address of the .got section. */ | |
1893 | if (h->type == STT_FUNC | |
1894 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1895 | { | |
1896 | if (h->plt.refcount <= 0 | |
1897 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1898 | && h->root.type != bfd_link_hash_defweak | |
74d1c347 | 1899 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel |
30667bf3 AM |
1900 | && (!info->shared || info->symbolic))) |
1901 | { | |
1902 | /* The .plt entry is not needed when: | |
1903 | a) Garbage collection has removed all references to the | |
1904 | symbol, or | |
1905 | b) We know for certain the symbol is defined in this | |
74d1c347 AM |
1906 | object, and it's not a weak definition, nor is the symbol |
1907 | used by a plabel relocation. Either this object is the | |
1908 | application or we are doing a shared symbolic link. */ | |
1909 | ||
1910 | /* As a special sop to the hppa ABI, we keep a .plt entry | |
1911 | for functions in sections containing PIC code. */ | |
30667bf3 AM |
1912 | if (!info->shared |
1913 | && h->plt.refcount > 0 | |
1914 | && (h->root.type == bfd_link_hash_defined | |
1915 | || h->root.type == bfd_link_hash_defweak) | |
1916 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) | |
1917 | { | |
1918 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; | |
1919 | } | |
1920 | else | |
1921 | { | |
1922 | h->plt.offset = (bfd_vma) -1; | |
1923 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1924 | return true; | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | /* Make an entry in the .plt section. */ | |
1929 | s = hplink->splt; | |
1930 | h->plt.offset = s->_raw_size; | |
74d1c347 AM |
1931 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE |
1932 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
1933 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1934 | { | |
1935 | /* Add some extra space for the dynamic linker to use. */ | |
1936 | s->_raw_size += PLABEL_PLT_ENTRY_SIZE; | |
1937 | } | |
1938 | else | |
1939 | s->_raw_size += PLT_ENTRY_SIZE; | |
30667bf3 AM |
1940 | |
1941 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
1942 | { | |
1943 | /* Make sure this symbol is output as a dynamic symbol. */ | |
74d1c347 AM |
1944 | if (h->dynindx == -1 |
1945 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
30667bf3 AM |
1946 | { |
1947 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1948 | return false; | |
1949 | } | |
1950 | ||
1951 | /* We also need to make an entry in the .rela.plt section. */ | |
1952 | s = hplink->srelplt; | |
1953 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1954 | } | |
1955 | return true; | |
1956 | } | |
edd21aca | 1957 | |
30667bf3 AM |
1958 | /* If this is a weak symbol, and there is a real definition, the |
1959 | processor independent code will have arranged for us to see the | |
1960 | real definition first, and we can just use the same value. */ | |
1961 | if (h->weakdef != NULL) | |
edd21aca | 1962 | { |
30667bf3 AM |
1963 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
1964 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1965 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1966 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1967 | return true; | |
1968 | } | |
edd21aca | 1969 | |
30667bf3 AM |
1970 | /* This is a reference to a symbol defined by a dynamic object which |
1971 | is not a function. */ | |
1972 | ||
1973 | /* If we are creating a shared library, we must presume that the | |
1974 | only references to the symbol are via the global offset table. | |
1975 | For such cases we need not do anything here; the relocations will | |
1976 | be handled correctly by relocate_section. */ | |
1977 | if (info->shared) | |
1978 | return true; | |
1979 | ||
1980 | /* If there are no references to this symbol that do not use the | |
1981 | GOT, we don't need to generate a copy reloc. */ | |
1982 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1983 | return true; | |
1984 | ||
1985 | /* We must allocate the symbol in our .dynbss section, which will | |
1986 | become part of the .bss section of the executable. There will be | |
1987 | an entry for this symbol in the .dynsym section. The dynamic | |
1988 | object will contain position independent code, so all references | |
1989 | from the dynamic object to this symbol will go through the global | |
1990 | offset table. The dynamic linker will use the .dynsym entry to | |
1991 | determine the address it must put in the global offset table, so | |
1992 | both the dynamic object and the regular object will refer to the | |
1993 | same memory location for the variable. */ | |
1994 | ||
1995 | s = hplink->sdynbss; | |
1996 | ||
1997 | /* We must generate a COPY reloc to tell the dynamic linker to | |
1998 | copy the initial value out of the dynamic object and into the | |
1999 | runtime process image. We need to remember the offset into the | |
2000 | .rela.bss section we are going to use. */ | |
2001 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2002 | { | |
2003 | asection *srel; | |
2004 | ||
2005 | srel = hplink->srelbss; | |
2006 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
2007 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
edd21aca | 2008 | } |
252b5132 | 2009 | |
30667bf3 AM |
2010 | { |
2011 | /* We need to figure out the alignment required for this symbol. I | |
2012 | have no idea how other ELF linkers handle this. */ | |
2013 | unsigned int power_of_two; | |
2014 | ||
2015 | power_of_two = bfd_log2 (h->size); | |
2016 | if (power_of_two > 3) | |
2017 | power_of_two = 3; | |
2018 | ||
2019 | /* Apply the required alignment. */ | |
2020 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
2021 | (bfd_size_type) (1 << power_of_two)); | |
2022 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
2023 | { | |
2024 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
2025 | return false; | |
2026 | } | |
2027 | } | |
2028 | /* Define the symbol as being at this point in the section. */ | |
2029 | h->root.u.def.section = s; | |
2030 | h->root.u.def.value = s->_raw_size; | |
edd21aca | 2031 | |
30667bf3 AM |
2032 | /* Increment the section size to make room for the symbol. */ |
2033 | s->_raw_size += h->size; | |
252b5132 RH |
2034 | |
2035 | return true; | |
2036 | } | |
2037 | ||
252b5132 | 2038 | |
30667bf3 AM |
2039 | /* Called via elf_link_hash_traverse to create .plt entries for an |
2040 | application that uses statically linked PIC functions. Similar to | |
2041 | the first part of elf32_hppa_adjust_dynamic_symbol. */ | |
252b5132 | 2042 | |
30667bf3 AM |
2043 | static boolean |
2044 | hppa_handle_PIC_calls (h, inf) | |
2045 | struct elf_link_hash_entry *h; | |
2046 | PTR inf; | |
252b5132 | 2047 | { |
30667bf3 AM |
2048 | struct bfd_link_info *info; |
2049 | bfd *dynobj; | |
2050 | struct elf32_hppa_link_hash_table *hplink; | |
2051 | asection *s; | |
2052 | ||
2053 | if (! (h->plt.refcount > 0 | |
2054 | && (h->root.type == bfd_link_hash_defined | |
2055 | || h->root.type == bfd_link_hash_defweak) | |
2056 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) | |
252b5132 | 2057 | { |
30667bf3 AM |
2058 | h->plt.offset = (bfd_vma) -1; |
2059 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2060 | return true; | |
252b5132 RH |
2061 | } |
2062 | ||
74d1c347 | 2063 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
30667bf3 | 2064 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; |
edd21aca | 2065 | |
30667bf3 | 2066 | info = (struct bfd_link_info *) inf; |
30667bf3 | 2067 | hplink = hppa_link_hash_table (info); |
74d1c347 | 2068 | dynobj = hplink->root.dynobj; |
edd21aca | 2069 | |
30667bf3 AM |
2070 | /* Make an entry in the .plt section. */ |
2071 | s = hplink->splt; | |
2072 | h->plt.offset = s->_raw_size; | |
2073 | s->_raw_size += PLT_ENTRY_SIZE; | |
2074 | ||
2075 | return true; | |
2076 | } | |
2077 | ||
2078 | ||
74d1c347 AM |
2079 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2080 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2081 | /* This function is called via elf_link_hash_traverse to discard space |
2082 | we allocated for relocs that it turned out we didn't need. */ | |
2083 | ||
2084 | static boolean | |
2085 | hppa_discard_copies (h, inf) | |
2086 | struct elf_link_hash_entry *h; | |
2087 | PTR inf; | |
2088 | { | |
2089 | struct elf32_hppa_dyn_reloc_entry *s; | |
2090 | struct elf32_hppa_link_hash_entry *eh; | |
2091 | struct bfd_link_info *info; | |
2092 | ||
2093 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
2094 | info = (struct bfd_link_info *) inf; | |
2095 | ||
74d1c347 | 2096 | #if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT |
30667bf3 AM |
2097 | /* Handle the stub reloc case. If we have a plt entry for the |
2098 | function, we won't be needing long branch stubs. s->count will | |
2099 | only be zero for stub relocs, which provides a handy way of | |
2100 | flagging these relocs, and means we need do nothing special for | |
2101 | the forced local and symbolic link case. */ | |
2102 | if (eh->stub_reloc_sec != NULL | |
2103 | && eh->elf.plt.offset != (bfd_vma) -1) | |
2104 | { | |
2105 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2106 | if (s->count == 0) | |
2107 | s->section->_raw_size -= sizeof (Elf32_External_Rela); | |
2108 | } | |
2109 | #endif | |
2110 | ||
74d1c347 | 2111 | #if RELATIVE_DYNAMIC_RELOCS |
30667bf3 AM |
2112 | /* If a symbol has been forced local or we have found a regular |
2113 | definition for the symbolic link case, then we won't be needing | |
2114 | any relocs. */ | |
30667bf3 AM |
2115 | if (eh->elf.dynindx == -1 |
2116 | || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
2117 | && eh->elf.root.type != bfd_link_hash_defweak | |
2118 | && info->symbolic)) | |
2119 | { | |
2120 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2121 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); | |
2122 | } | |
2123 | #endif | |
2124 | ||
2125 | return true; | |
2126 | } | |
2127 | #endif | |
2128 | ||
2129 | ||
2130 | /* Set the sizes of the dynamic sections. */ | |
2131 | ||
2132 | static boolean | |
2133 | elf32_hppa_size_dynamic_sections (output_bfd, info) | |
2134 | bfd *output_bfd; | |
2135 | struct bfd_link_info *info; | |
2136 | { | |
2137 | struct elf32_hppa_link_hash_table *hplink; | |
2138 | bfd *dynobj; | |
2139 | asection *s; | |
2140 | boolean relocs; | |
2141 | boolean reltext; | |
2142 | ||
2143 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 2144 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
2145 | BFD_ASSERT (dynobj != NULL); |
2146 | ||
74d1c347 | 2147 | if (hplink->root.dynamic_sections_created) |
30667bf3 | 2148 | { |
74d1c347 AM |
2149 | const char *funcname; |
2150 | bfd *i; | |
2151 | ||
30667bf3 AM |
2152 | /* Set the contents of the .interp section to the interpreter. */ |
2153 | if (! info->shared) | |
2154 | { | |
2155 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2156 | BFD_ASSERT (s != NULL); | |
2157 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2158 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2159 | } | |
74d1c347 AM |
2160 | |
2161 | /* DT_INIT and DT_FINI need a .plt entry. Make sure they have | |
2162 | one. */ | |
2163 | funcname = info->init_function; | |
2164 | while (1) | |
2165 | { | |
2166 | if (funcname != NULL) | |
2167 | { | |
2168 | struct elf_link_hash_entry *h; | |
2169 | ||
2170 | h = elf_link_hash_lookup (&hplink->root, | |
2171 | funcname, | |
2172 | false, false, false); | |
2173 | if (h != NULL | |
2174 | && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
2175 | | ELF_LINK_HASH_DEF_REGULAR))) | |
2176 | { | |
2177 | if (h->plt.refcount <= 0) | |
2178 | { | |
2179 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2180 | ||
2181 | /* Make an entry in the .plt section. We know | |
2182 | the function doesn't have a plabel by the | |
2183 | refcount */ | |
2184 | s = hplink->splt; | |
2185 | h->plt.offset = s->_raw_size; | |
2186 | s->_raw_size += PLT_ENTRY_SIZE; | |
2187 | ||
2188 | /* Make sure this symbol is output as a dynamic | |
2189 | symbol. */ | |
2190 | if (h->dynindx == -1) | |
2191 | { | |
2192 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2193 | return false; | |
2194 | } | |
2195 | ||
2196 | /* Make an entry for the reloc too. */ | |
2197 | s = hplink->srelplt; | |
2198 | s->_raw_size += sizeof (Elf32_External_Rela); | |
2199 | } | |
2200 | ||
2201 | ((struct elf32_hppa_link_hash_entry *) h)->plt_abs = 1; | |
2202 | } | |
2203 | } | |
2204 | if (funcname == info->fini_function) | |
2205 | break; | |
2206 | funcname = info->fini_function; | |
2207 | } | |
2208 | ||
2209 | /* Set up .plt offsets for local plabels. */ | |
2210 | for (i = info->input_bfds; i; i = i->link_next) | |
2211 | { | |
2212 | bfd_signed_vma *local_plt; | |
2213 | bfd_signed_vma *end_local_plt; | |
2214 | bfd_size_type locsymcount; | |
2215 | Elf_Internal_Shdr *symtab_hdr; | |
2216 | ||
2217 | local_plt = elf_local_got_refcounts (i); | |
2218 | if (!local_plt) | |
2219 | continue; | |
2220 | ||
2221 | symtab_hdr = &elf_tdata (i)->symtab_hdr; | |
2222 | locsymcount = symtab_hdr->sh_info; | |
2223 | local_plt += locsymcount; | |
2224 | end_local_plt = local_plt + locsymcount; | |
2225 | ||
2226 | for (; local_plt < end_local_plt; ++local_plt) | |
2227 | { | |
2228 | if (*local_plt > 0) | |
2229 | { | |
2230 | s = hplink->splt; | |
2231 | *local_plt = s->_raw_size; | |
2232 | s->_raw_size += PLT_ENTRY_SIZE; | |
2233 | if (info->shared) | |
2234 | hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela); | |
2235 | } | |
2236 | else | |
2237 | *local_plt = (bfd_vma) -1; | |
2238 | } | |
2239 | } | |
30667bf3 AM |
2240 | } |
2241 | else | |
2242 | { | |
2243 | /* Run through the function symbols, looking for any that are | |
2244 | PIC, and allocate space for the necessary .plt entries so | |
2245 | that %r19 will be set up. */ | |
2246 | if (! info->shared) | |
2247 | elf_link_hash_traverse (&hplink->root, | |
2248 | hppa_handle_PIC_calls, | |
2249 | info); | |
2250 | ||
2251 | /* We may have created entries in the .rela.got section. | |
2252 | However, if we are not creating the dynamic sections, we will | |
2253 | not actually use these entries. Reset the size of .rela.got, | |
2254 | which will cause it to get stripped from the output file | |
2255 | below. */ | |
2256 | hplink->srelgot->_raw_size = 0; | |
2257 | } | |
2258 | ||
74d1c347 AM |
2259 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2260 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2261 | /* If this is a -Bsymbolic shared link, then we need to discard all |
2262 | relocs against symbols defined in a regular object. We also need | |
2263 | to lose relocs we've allocated for long branch stubs if we know | |
2264 | we won't be generating a stub. */ | |
2265 | if (info->shared) | |
2266 | elf_link_hash_traverse (&hplink->root, | |
2267 | hppa_discard_copies, | |
2268 | info); | |
2269 | #endif | |
2270 | ||
2271 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2272 | determined the sizes of the various dynamic sections. Allocate | |
2273 | memory for them. */ | |
2274 | relocs = false; | |
2275 | reltext = false; | |
2276 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2277 | { | |
2278 | const char *name; | |
2279 | ||
2280 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2281 | continue; | |
2282 | ||
2283 | /* It's OK to base decisions on the section name, because none | |
2284 | of the dynobj section names depend upon the input files. */ | |
2285 | name = bfd_get_section_name (dynobj, s); | |
2286 | ||
2287 | if (strncmp (name, ".rela", 5) == 0) | |
2288 | { | |
2289 | if (s->_raw_size != 0) | |
2290 | { | |
2291 | asection *target; | |
2292 | ||
2293 | /* Remember whether there are any reloc sections other | |
2294 | than .rela.plt. */ | |
2295 | if (strcmp (name+5, ".plt") != 0) | |
2296 | { | |
2297 | const char *outname; | |
2298 | ||
2299 | relocs = true; | |
2300 | ||
2301 | /* If this relocation section applies to a read only | |
2302 | section, then we probably need a DT_TEXTREL | |
2303 | entry. The entries in the .rela.plt section | |
2304 | really apply to the .got section, which we | |
2305 | created ourselves and so know is not readonly. */ | |
2306 | outname = bfd_get_section_name (output_bfd, | |
2307 | s->output_section); | |
2308 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2309 | if (target != NULL | |
2310 | && (target->flags & SEC_READONLY) != 0 | |
2311 | && (target->flags & SEC_ALLOC) != 0) | |
2312 | reltext = true; | |
2313 | } | |
2314 | ||
2315 | /* We use the reloc_count field as a counter if we need | |
2316 | to copy relocs into the output file. */ | |
2317 | s->reloc_count = 0; | |
2318 | } | |
2319 | } | |
2320 | else if (strcmp (name, ".plt") == 0) | |
2321 | ; | |
2322 | else if (strcmp (name, ".got") == 0) | |
2323 | ; | |
2324 | else | |
2325 | { | |
2326 | /* It's not one of our sections, so don't allocate space. */ | |
2327 | continue; | |
2328 | } | |
2329 | ||
2330 | if (s->_raw_size == 0) | |
2331 | { | |
2332 | /* If we don't need this section, strip it from the | |
2333 | output file. This is mostly to handle .rela.bss and | |
2334 | .rela.plt. We must create both sections in | |
2335 | create_dynamic_sections, because they must be created | |
2336 | before the linker maps input sections to output | |
2337 | sections. The linker does that before | |
2338 | adjust_dynamic_symbol is called, and it is that | |
2339 | function which decides whether anything needs to go | |
2340 | into these sections. */ | |
2341 | _bfd_strip_section_from_output (info, s); | |
2342 | continue; | |
2343 | } | |
2344 | ||
2345 | /* Allocate memory for the section contents. Zero it, because | |
2346 | we may not fill in all the reloc sections. */ | |
2347 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2348 | if (s->contents == NULL && s->_raw_size != 0) | |
2349 | return false; | |
2350 | } | |
2351 | ||
74d1c347 | 2352 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
2353 | { |
2354 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It | |
2355 | actually has nothing to do with the PLT, it is how we | |
2356 | communicate the LTP value of a load module to the dynamic | |
2357 | linker. */ | |
2358 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
2359 | return false; | |
2360 | ||
2361 | /* Add some entries to the .dynamic section. We fill in the | |
2362 | values later, in elf32_hppa_finish_dynamic_sections, but we | |
2363 | must add the entries now so that we get the correct size for | |
2364 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2365 | dynamic linker and used by the debugger. */ | |
2366 | if (! info->shared) | |
2367 | { | |
2368 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2369 | return false; | |
2370 | } | |
2371 | ||
2372 | if (hplink->srelplt->_raw_size != 0) | |
2373 | { | |
2374 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2375 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2376 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2377 | return false; | |
2378 | } | |
2379 | ||
2380 | if (relocs) | |
2381 | { | |
2382 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
2383 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
2384 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
2385 | sizeof (Elf32_External_Rela))) | |
2386 | return false; | |
2387 | } | |
2388 | ||
2389 | if (reltext) | |
2390 | { | |
2391 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2392 | return false; | |
2393 | info->flags |= DF_TEXTREL; | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | return true; | |
2398 | } | |
2399 | ||
2400 | ||
2401 | /* External entry points for sizing and building linker stubs. */ | |
2402 | ||
2403 | /* Determine and set the size of the stub section for a final link. | |
2404 | ||
2405 | The basic idea here is to examine all the relocations looking for | |
2406 | PC-relative calls to a target that is unreachable with a "bl" | |
2407 | instruction. */ | |
2408 | ||
2409 | boolean | |
2410 | elf32_hppa_size_stubs (stub_bfd, multi_subspace, info, | |
2411 | add_stub_section, layout_sections_again) | |
2412 | bfd *stub_bfd; | |
2413 | boolean multi_subspace; | |
2414 | struct bfd_link_info *info; | |
2415 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
2416 | void (*layout_sections_again) PARAMS ((void)); | |
2417 | { | |
2418 | bfd *input_bfd; | |
2419 | asection *section; | |
2420 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
2421 | unsigned int i, indx, bfd_count, sec_count; | |
2422 | struct elf32_hppa_link_hash_table *hplink; | |
2423 | boolean stub_changed = 0; | |
2424 | ||
2425 | hplink = hppa_link_hash_table (info); | |
2426 | ||
2427 | /* Stash our params away. */ | |
2428 | hplink->stub_bfd = stub_bfd; | |
2429 | hplink->multi_subspace = multi_subspace; | |
2430 | hplink->add_stub_section = add_stub_section; | |
2431 | hplink->layout_sections_again = layout_sections_again; | |
2432 | ||
2433 | /* Count the number of input BFDs and the total number of input sections. */ | |
2434 | for (input_bfd = info->input_bfds, bfd_count = 0, sec_count = 0; | |
2435 | input_bfd != NULL; | |
2436 | input_bfd = input_bfd->link_next) | |
2437 | { | |
2438 | bfd_count += 1; | |
2439 | sec_count += input_bfd->section_count; | |
2440 | } | |
2441 | ||
2442 | hplink->stub_section_created | |
2443 | = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count); | |
2444 | if (hplink->stub_section_created == NULL) | |
2445 | return false; | |
2446 | ||
2447 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2448 | hplink->reloc_section_created | |
2449 | = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count); | |
2450 | if (hplink->reloc_section_created == NULL) | |
2451 | goto error_ret_free_stub; | |
2452 | #endif | |
2453 | ||
2454 | /* We want to read in symbol extension records only once. To do this | |
2455 | we need to read in the local symbols in parallel and save them for | |
2456 | later use; so hold pointers to the local symbols in an array. */ | |
2457 | all_local_syms | |
2458 | = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *) | |
2459 | * bfd_count); | |
2460 | if (all_local_syms == NULL) | |
2461 | goto error_ret_free_reloc; | |
2462 | ||
2463 | /* Walk over all the input BFDs, swapping in local symbols. | |
2464 | If we are creating a shared library, create hash entries for the | |
2465 | export stubs. */ | |
2466 | for (input_bfd = info->input_bfds, indx = 0, sec_count = 0; | |
2467 | input_bfd != NULL; | |
2468 | input_bfd = input_bfd->link_next, indx++) | |
2469 | { | |
2470 | Elf_Internal_Shdr *symtab_hdr; | |
2471 | Elf_Internal_Sym *isym; | |
2472 | Elf32_External_Sym *ext_syms, *esym; | |
edd21aca | 2473 | |
252b5132 RH |
2474 | /* We'll need the symbol table in a second. */ |
2475 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2476 | if (symtab_hdr->sh_info == 0) | |
2477 | continue; | |
2478 | ||
edd21aca AM |
2479 | /* We need an array of the local symbols attached to the input bfd. |
2480 | Unfortunately, we're going to have to read & swap them in. */ | |
2481 | local_syms = (Elf_Internal_Sym *) | |
2482 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym)); | |
2483 | if (local_syms == NULL) | |
2484 | { | |
2485 | goto error_ret_free_local; | |
2486 | } | |
2487 | all_local_syms[indx] = local_syms; | |
2488 | ext_syms = (Elf32_External_Sym *) | |
2489 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)); | |
2490 | if (ext_syms == NULL) | |
2491 | { | |
2492 | goto error_ret_free_local; | |
2493 | } | |
2494 | ||
2495 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
30667bf3 | 2496 | || (bfd_read (ext_syms, 1, |
edd21aca AM |
2497 | (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)), |
2498 | input_bfd) | |
2499 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
2500 | { | |
2501 | free (ext_syms); | |
2502 | goto error_ret_free_local; | |
2503 | } | |
2504 | ||
2505 | /* Swap the local symbols in. */ | |
2506 | isym = local_syms; | |
2507 | esym = ext_syms; | |
2508 | for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++) | |
2509 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); | |
2510 | ||
2511 | /* Now we can free the external symbols. */ | |
2512 | free (ext_syms); | |
edd21aca | 2513 | |
30667bf3 AM |
2514 | if (info->shared && hplink->multi_subspace) |
2515 | { | |
2516 | unsigned int symndx; | |
2517 | unsigned int symcount; | |
2518 | ||
2519 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2520 | - symtab_hdr->sh_info); | |
2521 | ||
2522 | /* Look through the global syms for functions; We need to | |
2523 | build export stubs for all globally visible functions. */ | |
2524 | for (symndx = 0; symndx < symcount; symndx++) | |
2525 | { | |
2526 | struct elf32_hppa_link_hash_entry *hash; | |
2527 | ||
2528 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2529 | elf_sym_hashes (input_bfd)[symndx]); | |
2530 | ||
2531 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2532 | || hash->elf.root.type == bfd_link_hash_warning) | |
2533 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2534 | hash->elf.root.u.i.link); | |
2535 | ||
2536 | /* At this point in the link, undefined syms have been | |
2537 | resolved, so we need to check that the symbol was | |
2538 | defined in this BFD. */ | |
2539 | if ((hash->elf.root.type == bfd_link_hash_defined | |
2540 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2541 | && hash->elf.type == STT_FUNC | |
2542 | && hash->elf.root.u.def.section->output_section != NULL | |
2543 | && hash->elf.root.u.def.section->owner == input_bfd | |
2544 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
2545 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) | |
2546 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT) | |
2547 | { | |
2548 | asection *sec; | |
2549 | const char *stub_name; | |
2550 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2551 | ||
2552 | sec = hash->elf.root.u.def.section; | |
2553 | stub_name = hash->elf.root.root.string; | |
2554 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2555 | stub_name, | |
2556 | false, false); | |
2557 | if (stub_entry == NULL) | |
2558 | { | |
2559 | stub_entry = hppa_add_stub (stub_name, | |
2560 | sec, | |
2561 | sec_count + sec->index, | |
2562 | info); | |
2563 | if (!stub_entry) | |
2564 | goto error_ret_free_local; | |
2565 | ||
2566 | stub_entry->target_value = hash->elf.root.u.def.value; | |
2567 | stub_entry->target_section = hash->elf.root.u.def.section; | |
2568 | stub_entry->stub_type = hppa_stub_export; | |
2569 | stub_entry->h = hash; | |
2570 | stub_changed = 1; | |
2571 | } | |
2572 | else | |
2573 | { | |
2574 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"), | |
2575 | bfd_get_filename (input_bfd), | |
2576 | stub_name); | |
2577 | } | |
2578 | } | |
2579 | } | |
30667bf3 | 2580 | } |
74d1c347 AM |
2581 | #if LONG_BRANCH_PIC_IN_SHLIB |
2582 | sec_count += input_bfd->section_count; | |
2583 | #else | |
2584 | if (! info->shared) | |
2585 | sec_count += input_bfd->section_count; | |
2586 | else | |
2587 | for (section = input_bfd->sections; | |
2588 | section != NULL; | |
2589 | section = section->next, sec_count++) | |
2590 | { | |
2591 | char *name; | |
2592 | asection *reloc_sec; | |
2593 | ||
2594 | name = bfd_malloc (strlen (section->name) | |
2595 | + sizeof STUB_SUFFIX | |
2596 | + 5); | |
2597 | if (name == NULL) | |
2598 | return false; | |
2599 | sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX); | |
2600 | reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name); | |
2601 | hplink->reloc_section_created[sec_count] = reloc_sec; | |
2602 | free (name); | |
2603 | } | |
2604 | #endif | |
30667bf3 | 2605 | } |
edd21aca AM |
2606 | |
2607 | while (1) | |
2608 | { | |
30667bf3 AM |
2609 | asection *stub_sec; |
2610 | ||
2611 | for (input_bfd = info->input_bfds, indx = 0, sec_count = 0; | |
2612 | input_bfd != NULL; | |
2613 | input_bfd = input_bfd->link_next, indx++) | |
2614 | { | |
2615 | Elf_Internal_Shdr *symtab_hdr; | |
2616 | ||
2617 | /* We'll need the symbol table in a second. */ | |
2618 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2619 | if (symtab_hdr->sh_info == 0) | |
2620 | continue; | |
2621 | ||
2622 | local_syms = all_local_syms[indx]; | |
2623 | ||
2624 | /* Walk over each section attached to the input bfd. */ | |
2625 | for (section = input_bfd->sections; | |
2626 | section != NULL; | |
2627 | section = section->next, sec_count++) | |
2628 | { | |
2629 | Elf_Internal_Shdr *input_rel_hdr; | |
2630 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2631 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2632 | ||
2633 | /* If there aren't any relocs, then there's nothing more | |
2634 | to do. */ | |
2635 | if ((section->flags & SEC_RELOC) == 0 | |
2636 | || section->reloc_count == 0) | |
2637 | continue; | |
2638 | ||
2639 | /* Allocate space for the external relocations. */ | |
2640 | external_relocs | |
2641 | = ((Elf32_External_Rela *) | |
2642 | bfd_malloc (section->reloc_count | |
2643 | * sizeof (Elf32_External_Rela))); | |
2644 | if (external_relocs == NULL) | |
2645 | { | |
2646 | goto error_ret_free_local; | |
2647 | } | |
2648 | ||
2649 | /* Likewise for the internal relocations. */ | |
2650 | internal_relocs = ((Elf_Internal_Rela *) | |
2651 | bfd_malloc (section->reloc_count | |
2652 | * sizeof (Elf_Internal_Rela))); | |
2653 | if (internal_relocs == NULL) | |
2654 | { | |
2655 | free (external_relocs); | |
2656 | goto error_ret_free_local; | |
2657 | } | |
2658 | ||
2659 | /* Read in the external relocs. */ | |
2660 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2661 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
2662 | || bfd_read (external_relocs, 1, | |
2663 | input_rel_hdr->sh_size, | |
2664 | input_bfd) != input_rel_hdr->sh_size) | |
2665 | { | |
2666 | free (external_relocs); | |
2667 | error_ret_free_internal: | |
2668 | free (internal_relocs); | |
2669 | goto error_ret_free_local; | |
2670 | } | |
2671 | ||
2672 | /* Swap in the relocs. */ | |
2673 | erela = external_relocs; | |
2674 | erelaend = erela + section->reloc_count; | |
2675 | irela = internal_relocs; | |
2676 | for (; erela < erelaend; erela++, irela++) | |
2677 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
2678 | ||
2679 | /* We're done with the external relocs, free them. */ | |
2680 | free (external_relocs); | |
2681 | ||
2682 | /* Now examine each relocation. */ | |
2683 | irela = internal_relocs; | |
2684 | irelaend = irela + section->reloc_count; | |
2685 | for (; irela < irelaend; irela++) | |
2686 | { | |
2687 | unsigned int r_type, r_indx; | |
2688 | enum elf32_hppa_stub_type stub_type; | |
2689 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2690 | asection *sym_sec; | |
2691 | bfd_vma sym_value; | |
2692 | bfd_vma destination; | |
2693 | struct elf32_hppa_link_hash_entry *hash; | |
2694 | char *stub_name; | |
2695 | ||
2696 | r_type = ELF32_R_TYPE (irela->r_info); | |
2697 | r_indx = ELF32_R_SYM (irela->r_info); | |
2698 | ||
2699 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
2700 | { | |
2701 | bfd_set_error (bfd_error_bad_value); | |
2702 | goto error_ret_free_internal; | |
2703 | } | |
2704 | ||
2705 | /* Only look for stubs on call instructions. */ | |
2706 | if (r_type != (unsigned int) R_PARISC_PCREL12F | |
2707 | && r_type != (unsigned int) R_PARISC_PCREL17F | |
2708 | && r_type != (unsigned int) R_PARISC_PCREL22F) | |
2709 | continue; | |
2710 | ||
2711 | /* Now determine the call target, its name, value, | |
2712 | section. */ | |
2713 | sym_sec = NULL; | |
2714 | sym_value = 0; | |
2715 | destination = 0; | |
2716 | hash = NULL; | |
2717 | if (r_indx < symtab_hdr->sh_info) | |
2718 | { | |
2719 | /* It's a local symbol. */ | |
2720 | Elf_Internal_Sym *sym; | |
2721 | Elf_Internal_Shdr *hdr; | |
2722 | ||
2723 | sym = local_syms + r_indx; | |
2724 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2725 | sym_sec = hdr->bfd_section; | |
2726 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2727 | sym_value = sym->st_value; | |
2728 | destination = (sym_value + irela->r_addend | |
2729 | + sym_sec->output_offset | |
2730 | + sym_sec->output_section->vma); | |
2731 | } | |
2732 | else | |
2733 | { | |
2734 | /* It's an external symbol. */ | |
2735 | int e_indx; | |
2736 | ||
2737 | e_indx = r_indx - symtab_hdr->sh_info; | |
2738 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2739 | elf_sym_hashes (input_bfd)[e_indx]); | |
2740 | ||
2741 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2742 | || hash->elf.root.type == bfd_link_hash_warning) | |
2743 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2744 | hash->elf.root.u.i.link); | |
2745 | ||
2746 | if (hash->elf.root.type == bfd_link_hash_defined | |
2747 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2748 | { | |
2749 | sym_sec = hash->elf.root.u.def.section; | |
2750 | sym_value = hash->elf.root.u.def.value; | |
2751 | if (sym_sec->output_section != NULL) | |
2752 | destination = (sym_value + irela->r_addend | |
2753 | + sym_sec->output_offset | |
2754 | + sym_sec->output_section->vma); | |
2755 | } | |
2756 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
2757 | { | |
2758 | if (! info->shared) | |
2759 | continue; | |
2760 | } | |
2761 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
2762 | { | |
2763 | if (! (info->shared | |
2764 | && !info->no_undefined | |
2765 | && (ELF_ST_VISIBILITY (hash->elf.other) | |
2766 | == STV_DEFAULT))) | |
2767 | continue; | |
2768 | } | |
2769 | else | |
2770 | { | |
2771 | bfd_set_error (bfd_error_bad_value); | |
2772 | goto error_ret_free_internal; | |
2773 | } | |
2774 | } | |
2775 | ||
2776 | /* Determine what (if any) linker stub is needed. */ | |
2777 | stub_type = hppa_type_of_stub (section, irela, hash, | |
2778 | destination); | |
2779 | if (stub_type == hppa_stub_none) | |
2780 | continue; | |
2781 | ||
2782 | /* Get the name of this stub. */ | |
2783 | stub_name = hppa_stub_name (section, sym_sec, hash, irela); | |
2784 | if (!stub_name) | |
2785 | goto error_ret_free_internal; | |
2786 | ||
2787 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2788 | stub_name, | |
2789 | false, false); | |
2790 | if (stub_entry != NULL) | |
2791 | { | |
2792 | /* The proper stub has already been created. */ | |
2793 | free (stub_name); | |
2794 | continue; | |
2795 | } | |
2796 | ||
2797 | stub_entry = hppa_add_stub (stub_name, section, | |
2798 | sec_count, info); | |
2799 | if (stub_entry == NULL) | |
2800 | { | |
2801 | free (stub_name); | |
2802 | goto error_ret_free_local; | |
2803 | } | |
2804 | ||
2805 | stub_entry->target_value = sym_value; | |
2806 | stub_entry->target_section = sym_sec; | |
2807 | stub_entry->stub_type = stub_type; | |
2808 | if (info->shared) | |
2809 | { | |
2810 | if (stub_type == hppa_stub_import) | |
2811 | stub_entry->stub_type = hppa_stub_import_shared; | |
2812 | else if (stub_type == hppa_stub_long_branch | |
2813 | && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL)) | |
2814 | stub_entry->stub_type = hppa_stub_long_branch_shared; | |
2815 | } | |
2816 | stub_entry->h = hash; | |
2817 | stub_changed = 1; | |
2818 | } | |
2819 | ||
2820 | /* We're done with the internal relocs, free them. */ | |
2821 | free (internal_relocs); | |
2822 | } | |
2823 | } | |
2824 | ||
2825 | if (!stub_changed) | |
2826 | break; | |
2827 | ||
2828 | /* OK, we've added some stubs. Find out the new size of the | |
2829 | stub sections. */ | |
30667bf3 AM |
2830 | for (stub_sec = hplink->stub_bfd->sections; |
2831 | stub_sec != NULL; | |
2832 | stub_sec = stub_sec->next) | |
2833 | { | |
74d1c347 AM |
2834 | stub_sec->_raw_size = 0; |
2835 | stub_sec->_cooked_size = 0; | |
2836 | } | |
2837 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2838 | for (i = 0; i < sec_count; i++) | |
2839 | { | |
2840 | stub_sec = hplink->reloc_section_created[i]; | |
2841 | if (stub_sec != NULL) | |
2842 | { | |
2843 | stub_sec->_raw_size = 0; | |
2844 | stub_sec->_cooked_size = 0; | |
2845 | } | |
30667bf3 | 2846 | } |
74d1c347 AM |
2847 | #endif |
2848 | ||
2849 | bfd_hash_traverse (&hplink->stub_hash_table, | |
2850 | hppa_size_one_stub, | |
2851 | hplink); | |
2852 | ||
30667bf3 AM |
2853 | /* Ask the linker to do its stuff. */ |
2854 | (*hplink->layout_sections_again) (); | |
2855 | stub_changed = 0; | |
2856 | } | |
2857 | ||
2858 | /* We're done with the local symbols, free them. */ | |
2859 | for (i = 0; i < bfd_count; i++) | |
2860 | if (all_local_syms[i]) | |
2861 | free (all_local_syms[i]); | |
2862 | free (all_local_syms); | |
2863 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2864 | free (hplink->reloc_section_created); | |
2865 | #endif | |
2866 | free (hplink->stub_section_created); | |
2867 | return true; | |
2868 | ||
2869 | error_ret_free_local: | |
2870 | for (i = 0; i < bfd_count; i++) | |
2871 | if (all_local_syms[i]) | |
2872 | free (all_local_syms[i]); | |
2873 | free (all_local_syms); | |
2874 | ||
2875 | error_ret_free_reloc: | |
2876 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2877 | free (hplink->reloc_section_created); | |
2878 | error_ret_free_stub: | |
2879 | #endif | |
2880 | free (hplink->stub_section_created); | |
2881 | return false; | |
2882 | } | |
2883 | ||
2884 | ||
2885 | /* For a final link, this function is called after we have sized the | |
2886 | stubs to provide a value for __gp. */ | |
2887 | ||
2888 | boolean | |
2889 | elf32_hppa_set_gp (abfd, info) | |
2890 | bfd *abfd; | |
2891 | struct bfd_link_info *info; | |
2892 | { | |
74d1c347 | 2893 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
2894 | struct elf_link_hash_entry *h; |
2895 | asection *sec; | |
2896 | bfd_vma gp_val; | |
2897 | ||
74d1c347 AM |
2898 | hplink = hppa_link_hash_table (info); |
2899 | h = elf_link_hash_lookup (&hplink->root, "$global$", | |
30667bf3 AM |
2900 | false, false, false); |
2901 | ||
2902 | if (h != NULL && h->root.type == bfd_link_hash_defined) | |
2903 | { | |
2904 | gp_val = h->root.u.def.value; | |
2905 | sec = h->root.u.def.section; | |
2906 | } | |
2907 | else | |
2908 | { | |
74d1c347 AM |
2909 | /* Choose to point our LTP at, in this order, one of .plt, .got, |
2910 | or .data, if these sections exist. In the case of choosing | |
2911 | .plt try to make the LTP ideal for addressing anywhere in the | |
2912 | .plt or .got with a 14 bit signed offset. Typically, the end | |
2913 | of the .plt is the start of the .got, so choose .plt + 0x2000 | |
2914 | if either the .plt or .got is larger than 0x2000. If both | |
2915 | the .plt and .got are smaller than 0x2000, choose the end of | |
2916 | the .plt section. */ | |
2917 | ||
2918 | sec = hplink->splt; | |
2919 | if (sec != NULL) | |
30667bf3 | 2920 | { |
74d1c347 AM |
2921 | gp_val = sec->_raw_size; |
2922 | if (gp_val > 0x2000 | |
2923 | || (hplink->sgot && hplink->sgot->_raw_size > 0x2000)) | |
2924 | { | |
2925 | gp_val = 0x2000; | |
2926 | } | |
2927 | } | |
2928 | else | |
2929 | { | |
2930 | gp_val = 0; | |
2931 | sec = hplink->sgot; | |
2932 | if (sec != NULL) | |
2933 | { | |
2934 | /* We know we don't have a .plt. If .got is large, | |
2935 | offset our LTP. */ | |
2936 | if (sec->_raw_size > 0x2000) | |
2937 | gp_val = 0x2000; | |
2938 | } | |
2939 | else | |
2940 | { | |
2941 | /* No .plt or .got. Who cares what the LTP is? */ | |
2942 | sec = bfd_get_section_by_name (abfd, ".data"); | |
2943 | } | |
30667bf3 AM |
2944 | } |
2945 | } | |
2946 | ||
74d1c347 AM |
2947 | if (sec != NULL) |
2948 | gp_val += sec->output_section->vma + sec->output_offset; | |
2949 | ||
2950 | elf_gp (abfd) = gp_val; | |
30667bf3 AM |
2951 | return true; |
2952 | } | |
2953 | ||
2954 | ||
2955 | /* Build all the stubs associated with the current output file. The | |
2956 | stubs are kept in a hash table attached to the main linker hash | |
2957 | table. We also set up the .plt entries for statically linked PIC | |
2958 | functions here. This function is called via hppaelf_finish in the | |
2959 | linker. */ | |
2960 | ||
2961 | boolean | |
2962 | elf32_hppa_build_stubs (info) | |
2963 | struct bfd_link_info *info; | |
2964 | { | |
2965 | asection *stub_sec; | |
2966 | struct bfd_hash_table *table; | |
2967 | struct elf32_hppa_link_hash_table *hplink; | |
2968 | ||
2969 | hplink = hppa_link_hash_table (info); | |
2970 | ||
2971 | for (stub_sec = hplink->stub_bfd->sections; | |
2972 | stub_sec != NULL; | |
2973 | stub_sec = stub_sec->next) | |
2974 | { | |
74d1c347 | 2975 | size_t size; |
30667bf3 AM |
2976 | |
2977 | /* Allocate memory to hold the linker stubs. */ | |
74d1c347 | 2978 | size = stub_sec->_raw_size; |
30667bf3 AM |
2979 | stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd, |
2980 | size); | |
2981 | if (stub_sec->contents == NULL && size != 0) | |
2982 | return false; | |
74d1c347 | 2983 | stub_sec->_raw_size = 0; |
30667bf3 AM |
2984 | } |
2985 | ||
2986 | /* Build the stubs as directed by the stub hash table. */ | |
30667bf3 AM |
2987 | table = &hplink->stub_hash_table; |
2988 | bfd_hash_traverse (table, hppa_build_one_stub, info); | |
2989 | ||
2990 | return true; | |
2991 | } | |
2992 | ||
2993 | ||
2994 | /* Perform a relocation as part of a final link. */ | |
2995 | ||
2996 | static bfd_reloc_status_type | |
2997 | final_link_relocate (input_section, contents, rel, value, info, sym_sec, h) | |
2998 | asection *input_section; | |
2999 | bfd_byte *contents; | |
3000 | const Elf_Internal_Rela *rel; | |
3001 | bfd_vma value; | |
3002 | struct bfd_link_info *info; | |
3003 | asection *sym_sec; | |
3004 | struct elf32_hppa_link_hash_entry *h; | |
3005 | { | |
3006 | int insn; | |
3007 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); | |
3008 | reloc_howto_type *howto = elf_hppa_howto_table + r_type; | |
3009 | int r_format = howto->bitsize; | |
3010 | enum hppa_reloc_field_selector_type_alt r_field; | |
3011 | bfd *input_bfd = input_section->owner; | |
3012 | bfd_vma offset = rel->r_offset; | |
3013 | bfd_vma max_branch_offset = 0; | |
3014 | bfd_byte *hit_data = contents + offset; | |
3015 | bfd_signed_vma addend = rel->r_addend; | |
3016 | bfd_vma location; | |
3017 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL; | |
3018 | int val; | |
3019 | ||
3020 | if (r_type == R_PARISC_NONE) | |
3021 | return bfd_reloc_ok; | |
3022 | ||
3023 | insn = bfd_get_32 (input_bfd, hit_data); | |
3024 | ||
3025 | /* Find out where we are and where we're going. */ | |
3026 | location = (offset + | |
3027 | input_section->output_offset + | |
3028 | input_section->output_section->vma); | |
3029 | ||
3030 | switch (r_type) | |
3031 | { | |
3032 | case R_PARISC_PCREL12F: | |
3033 | case R_PARISC_PCREL17F: | |
3034 | case R_PARISC_PCREL22F: | |
3035 | /* If this is a call to a function defined in another dynamic | |
3036 | library, or if it is a call to a PIC function in the same | |
74d1c347 AM |
3037 | object, or if this is a shared link and it is a call to a |
3038 | weak symbol which may or may not be in the same object, then | |
3039 | find the import stub in the stub hash. */ | |
30667bf3 AM |
3040 | if (sym_sec == NULL |
3041 | || sym_sec->output_section == NULL | |
74d1c347 AM |
3042 | || (h != NULL && |
3043 | (h->pic_call | |
3044 | || (h->elf.root.type == bfd_link_hash_defweak | |
3045 | && h->elf.dynindx != -1 | |
3046 | && h->elf.plt.offset != (bfd_vma) -1)))) | |
30667bf3 AM |
3047 | { |
3048 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
3049 | h, rel, info); | |
3050 | if (stub_entry != NULL) | |
3051 | { | |
3052 | value = (stub_entry->stub_offset | |
3053 | + stub_entry->stub_sec->output_offset | |
3054 | + stub_entry->stub_sec->output_section->vma); | |
3055 | addend = 0; | |
3056 | } | |
3057 | else if (sym_sec == NULL && h != NULL | |
3058 | && h->elf.root.type == bfd_link_hash_undefweak) | |
3059 | { | |
3060 | /* It's OK if undefined weak. Make undefined weak | |
3061 | branches go nowhere. */ | |
3062 | value = location; | |
3063 | addend = 0; | |
3064 | } | |
3065 | else | |
3066 | return bfd_reloc_notsupported; | |
3067 | } | |
3068 | /* Fall thru. */ | |
3069 | ||
3070 | case R_PARISC_PCREL21L: | |
3071 | case R_PARISC_PCREL17C: | |
3072 | case R_PARISC_PCREL17R: | |
3073 | case R_PARISC_PCREL14R: | |
3074 | case R_PARISC_PCREL14F: | |
3075 | /* Make it a pc relative offset. */ | |
3076 | value -= location; | |
3077 | addend -= 8; | |
3078 | break; | |
3079 | ||
3080 | case R_PARISC_DPREL21L: | |
3081 | case R_PARISC_DPREL14R: | |
3082 | case R_PARISC_DPREL14F: | |
3083 | /* For all the DP relative relocations, we need to examine the symbol's | |
3084 | section. If it's a code section, then "data pointer relative" makes | |
3085 | no sense. In that case we don't adjust the "value", and for 21 bit | |
3086 | addil instructions, we change the source addend register from %dp to | |
3087 | %r0. This situation commonly arises when a variable's "constness" | |
3088 | is declared differently from the way the variable is defined. For | |
3089 | instance: "extern int foo" with foo defined as "const int foo". */ | |
3090 | if (sym_sec == NULL) | |
3091 | break; | |
3092 | if ((sym_sec->flags & SEC_CODE) != 0) | |
3093 | { | |
3094 | if ((insn & ((0x3f << 26) | (0x1f << 21))) | |
3095 | == (((int) OP_ADDIL << 26) | (27 << 21))) | |
3096 | { | |
3097 | insn &= ~ (0x1f << 21); | |
74d1c347 | 3098 | #if 1 /* debug them. */ |
30667bf3 AM |
3099 | (*_bfd_error_handler) |
3100 | (_("%s(%s+0x%lx): fixing %s"), | |
3101 | bfd_get_filename (input_bfd), | |
3102 | input_section->name, | |
3103 | (long) rel->r_offset, | |
3104 | howto->name); | |
3105 | #endif | |
3106 | } | |
3107 | /* Now try to make things easy for the dynamic linker. */ | |
3108 | ||
3109 | break; | |
3110 | } | |
74d1c347 | 3111 | /* Fall thru. */ |
30667bf3 AM |
3112 | |
3113 | case R_PARISC_DLTIND21L: | |
3114 | case R_PARISC_DLTIND14R: | |
3115 | case R_PARISC_DLTIND14F: | |
3116 | value -= elf_gp (input_section->output_section->owner); | |
3117 | break; | |
3118 | ||
3119 | default: | |
3120 | break; | |
3121 | } | |
3122 | ||
3123 | switch (r_type) | |
3124 | { | |
3125 | case R_PARISC_DIR32: | |
3126 | case R_PARISC_DIR17F: | |
3127 | case R_PARISC_PCREL17C: | |
3128 | case R_PARISC_PCREL14F: | |
3129 | case R_PARISC_DPREL14F: | |
3130 | case R_PARISC_PLABEL32: | |
3131 | case R_PARISC_DLTIND14F: | |
3132 | case R_PARISC_SEGBASE: | |
3133 | case R_PARISC_SEGREL32: | |
3134 | r_field = e_fsel; | |
3135 | break; | |
3136 | ||
3137 | case R_PARISC_DIR21L: | |
3138 | case R_PARISC_PCREL21L: | |
3139 | case R_PARISC_DPREL21L: | |
3140 | case R_PARISC_PLABEL21L: | |
3141 | case R_PARISC_DLTIND21L: | |
3142 | r_field = e_lrsel; | |
3143 | break; | |
3144 | ||
3145 | case R_PARISC_DIR17R: | |
3146 | case R_PARISC_PCREL17R: | |
3147 | case R_PARISC_DIR14R: | |
3148 | case R_PARISC_PCREL14R: | |
3149 | case R_PARISC_DPREL14R: | |
3150 | case R_PARISC_PLABEL14R: | |
3151 | case R_PARISC_DLTIND14R: | |
3152 | r_field = e_rrsel; | |
3153 | break; | |
3154 | ||
3155 | case R_PARISC_PCREL12F: | |
3156 | case R_PARISC_PCREL17F: | |
3157 | case R_PARISC_PCREL22F: | |
3158 | r_field = e_fsel; | |
3159 | ||
3160 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3161 | { | |
3162 | max_branch_offset = (1 << (17-1)) << 2; | |
3163 | } | |
3164 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3165 | { | |
3166 | max_branch_offset = (1 << (12-1)) << 2; | |
3167 | } | |
3168 | else | |
3169 | { | |
3170 | max_branch_offset = (1 << (22-1)) << 2; | |
3171 | } | |
3172 | ||
3173 | /* sym_sec is NULL on undefined weak syms or when shared on | |
3174 | undefined syms. We've already checked for a stub for the | |
3175 | shared undefined case. */ | |
3176 | if (sym_sec == NULL) | |
3177 | break; | |
3178 | ||
3179 | /* If the branch is out of reach, then redirect the | |
3180 | call to the local stub for this function. */ | |
3181 | if (value + addend + max_branch_offset >= 2*max_branch_offset) | |
3182 | { | |
3183 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
3184 | h, rel, info); | |
3185 | if (stub_entry == NULL) | |
3186 | return bfd_reloc_notsupported; | |
3187 | ||
3188 | /* Munge up the value and addend so that we call the stub | |
3189 | rather than the procedure directly. */ | |
3190 | value = (stub_entry->stub_offset | |
3191 | + stub_entry->stub_sec->output_offset | |
3192 | + stub_entry->stub_sec->output_section->vma | |
3193 | - location); | |
3194 | addend = -8; | |
3195 | } | |
3196 | break; | |
3197 | ||
3198 | /* Something we don't know how to handle. */ | |
3199 | default: | |
3200 | return bfd_reloc_notsupported; | |
3201 | } | |
3202 | ||
3203 | /* Make sure we can reach the stub. */ | |
3204 | if (max_branch_offset != 0 | |
3205 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3206 | { | |
3207 | (*_bfd_error_handler) | |
3208 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), | |
3209 | bfd_get_filename (input_bfd), | |
3210 | input_section->name, | |
3211 | (long) rel->r_offset, | |
3212 | stub_entry->root.string); | |
3213 | return bfd_reloc_notsupported; | |
3214 | } | |
3215 | ||
3216 | val = hppa_field_adjust (value, addend, r_field); | |
3217 | ||
3218 | switch (r_type) | |
3219 | { | |
3220 | case R_PARISC_PCREL12F: | |
3221 | case R_PARISC_PCREL17C: | |
3222 | case R_PARISC_PCREL17F: | |
3223 | case R_PARISC_PCREL17R: | |
3224 | case R_PARISC_PCREL22F: | |
3225 | case R_PARISC_DIR17F: | |
3226 | case R_PARISC_DIR17R: | |
3227 | /* This is a branch. Divide the offset by four. | |
3228 | Note that we need to decide whether it's a branch or | |
3229 | otherwise by inspecting the reloc. Inspecting insn won't | |
3230 | work as insn might be from a .word directive. */ | |
3231 | val >>= 2; | |
3232 | break; | |
3233 | ||
3234 | default: | |
3235 | break; | |
3236 | } | |
3237 | ||
3238 | insn = hppa_rebuild_insn (insn, val, r_format); | |
3239 | ||
3240 | /* Update the instruction word. */ | |
74d1c347 | 3241 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); |
30667bf3 AM |
3242 | return bfd_reloc_ok; |
3243 | } | |
3244 | ||
3245 | ||
3246 | /* Relocate an HPPA ELF section. */ | |
3247 | ||
3248 | static boolean | |
3249 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
3250 | contents, relocs, local_syms, local_sections) | |
3251 | bfd *output_bfd; | |
3252 | struct bfd_link_info *info; | |
3253 | bfd *input_bfd; | |
3254 | asection *input_section; | |
3255 | bfd_byte *contents; | |
3256 | Elf_Internal_Rela *relocs; | |
3257 | Elf_Internal_Sym *local_syms; | |
3258 | asection **local_sections; | |
3259 | { | |
3260 | bfd *dynobj; | |
3261 | bfd_vma *local_got_offsets; | |
3262 | struct elf32_hppa_link_hash_table *hplink; | |
3263 | Elf_Internal_Shdr *symtab_hdr; | |
3264 | Elf_Internal_Rela *rel; | |
3265 | Elf_Internal_Rela *relend; | |
3266 | asection *sreloc; | |
3267 | ||
3268 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3269 | ||
30667bf3 | 3270 | hplink = hppa_link_hash_table (info); |
74d1c347 AM |
3271 | dynobj = hplink->root.dynobj; |
3272 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
30667bf3 AM |
3273 | sreloc = NULL; |
3274 | ||
3275 | rel = relocs; | |
3276 | relend = relocs + input_section->reloc_count; | |
3277 | for (; rel < relend; rel++) | |
3278 | { | |
3279 | unsigned int r_type; | |
3280 | reloc_howto_type *howto; | |
3281 | unsigned int r_symndx; | |
3282 | struct elf32_hppa_link_hash_entry *h; | |
3283 | Elf_Internal_Sym *sym; | |
3284 | asection *sym_sec; | |
3285 | bfd_vma relocation; | |
3286 | bfd_reloc_status_type r; | |
3287 | const char *sym_name; | |
74d1c347 | 3288 | boolean plabel; |
30667bf3 AM |
3289 | |
3290 | r_type = ELF32_R_TYPE (rel->r_info); | |
3291 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3292 | { | |
3293 | bfd_set_error (bfd_error_bad_value); | |
3294 | return false; | |
3295 | } | |
3296 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3297 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3298 | continue; | |
3299 | ||
3300 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3301 | ||
3302 | if (info->relocateable) | |
3303 | { | |
3304 | /* This is a relocateable link. We don't have to change | |
3305 | anything, unless the reloc is against a section symbol, | |
3306 | in which case we have to adjust according to where the | |
3307 | section symbol winds up in the output section. */ | |
3308 | if (r_symndx < symtab_hdr->sh_info) | |
3309 | { | |
3310 | sym = local_syms + r_symndx; | |
3311 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3312 | { | |
3313 | sym_sec = local_sections[r_symndx]; | |
3314 | rel->r_addend += sym_sec->output_offset; | |
3315 | } | |
3316 | } | |
3317 | continue; | |
3318 | } | |
3319 | ||
3320 | /* This is a final link. */ | |
3321 | h = NULL; | |
3322 | sym = NULL; | |
3323 | sym_sec = NULL; | |
3324 | if (r_symndx < symtab_hdr->sh_info) | |
3325 | { | |
3326 | /* This is a local symbol, h defaults to NULL. */ | |
3327 | sym = local_syms + r_symndx; | |
3328 | sym_sec = local_sections[r_symndx]; | |
3329 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3330 | ? 0 : sym->st_value) | |
3331 | + sym_sec->output_offset | |
3332 | + sym_sec->output_section->vma); | |
3333 | } | |
3334 | else | |
3335 | { | |
3336 | int indx; | |
3337 | ||
3338 | /* It's a global; Find its entry in the link hash. */ | |
3339 | indx = r_symndx - symtab_hdr->sh_info; | |
3340 | h = ((struct elf32_hppa_link_hash_entry *) | |
3341 | elf_sym_hashes (input_bfd)[indx]); | |
3342 | while (h->elf.root.type == bfd_link_hash_indirect | |
3343 | || h->elf.root.type == bfd_link_hash_warning) | |
3344 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; | |
3345 | ||
3346 | relocation = 0; | |
3347 | if (h->elf.root.type == bfd_link_hash_defined | |
3348 | || h->elf.root.type == bfd_link_hash_defweak) | |
3349 | { | |
3350 | sym_sec = h->elf.root.u.def.section; | |
3351 | /* If sym_sec->output_section is NULL, then it's a | |
3352 | symbol defined in a shared library. */ | |
3353 | if (sym_sec->output_section != NULL) | |
3354 | relocation = (h->elf.root.u.def.value | |
3355 | + sym_sec->output_offset | |
3356 | + sym_sec->output_section->vma); | |
3357 | } | |
3358 | else if (h->elf.root.type == bfd_link_hash_undefweak) | |
3359 | ; | |
3360 | else if (info->shared && !info->no_undefined | |
3361 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT) | |
3362 | { | |
3363 | if (info->symbolic) | |
3364 | if (!((*info->callbacks->undefined_symbol) | |
3365 | (info, h->elf.root.root.string, input_bfd, | |
3366 | input_section, rel->r_offset, false))) | |
3367 | return false; | |
3368 | } | |
3369 | else | |
3370 | { | |
3371 | if (!((*info->callbacks->undefined_symbol) | |
3372 | (info, h->elf.root.root.string, input_bfd, | |
3373 | input_section, rel->r_offset, true))) | |
3374 | return false; | |
3375 | } | |
3376 | } | |
3377 | ||
3378 | /* Do any required modifications to the relocation value, and | |
3379 | determine what types of dynamic info we need to output, if | |
3380 | any. */ | |
74d1c347 | 3381 | plabel = 0; |
30667bf3 AM |
3382 | switch (r_type) |
3383 | { | |
3384 | case R_PARISC_DLTIND14F: | |
3385 | case R_PARISC_DLTIND14R: | |
3386 | case R_PARISC_DLTIND21L: | |
3387 | /* Relocation is to the entry for this symbol in the global | |
3388 | offset table. */ | |
3389 | if (h != NULL) | |
3390 | { | |
3391 | bfd_vma off; | |
3392 | ||
3393 | off = h->elf.got.offset; | |
3394 | BFD_ASSERT (off != (bfd_vma) -1); | |
3395 | ||
74d1c347 | 3396 | if (! hplink->root.dynamic_sections_created |
30667bf3 AM |
3397 | || (info->shared |
3398 | && (info->symbolic || h->elf.dynindx == -1) | |
3399 | && (h->elf.elf_link_hash_flags | |
3400 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
3401 | { | |
3402 | /* This is actually a static link, or it is a | |
3403 | -Bsymbolic link and the symbol is defined | |
3404 | locally, or the symbol was forced to be local | |
3405 | because of a version file. We must initialize | |
3406 | this entry in the global offset table. Since the | |
3407 | offset must always be a multiple of 4, we use the | |
3408 | least significant bit to record whether we have | |
3409 | initialized it already. | |
3410 | ||
3411 | When doing a dynamic link, we create a .rela.got | |
3412 | relocation entry to initialize the value. This | |
3413 | is done in the finish_dynamic_symbol routine. */ | |
3414 | if ((off & 1) != 0) | |
3415 | off &= ~1; | |
3416 | else | |
3417 | { | |
3418 | bfd_put_32 (output_bfd, relocation, | |
3419 | hplink->sgot->contents + off); | |
3420 | h->elf.got.offset |= 1; | |
3421 | } | |
3422 | } | |
3423 | ||
3424 | relocation = off; | |
3425 | } | |
3426 | else | |
3427 | { | |
3428 | /* Local symbol case. */ | |
3429 | bfd_vma off; | |
3430 | ||
3431 | BFD_ASSERT (local_got_offsets != NULL | |
3432 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
3433 | ||
3434 | off = local_got_offsets[r_symndx]; | |
3435 | ||
3436 | /* The offset must always be a multiple of 4. We use | |
3437 | the least significant bit to record whether we have | |
3438 | already generated the necessary reloc. */ | |
3439 | if ((off & 1) != 0) | |
3440 | off &= ~1; | |
3441 | else | |
3442 | { | |
3443 | bfd_put_32 (output_bfd, relocation, | |
3444 | hplink->sgot->contents + off); | |
3445 | ||
3446 | if (info->shared) | |
3447 | { | |
74d1c347 | 3448 | /* Output a dynamic *ABS* relocation for this |
30667bf3 AM |
3449 | GOT entry. In this case it is relative to |
3450 | the base of the object because the symbol | |
3451 | index is zero. */ | |
3452 | Elf_Internal_Rela outrel; | |
3453 | asection *srelgot = hplink->srelgot; | |
3454 | ||
3455 | outrel.r_offset = (off | |
3456 | + hplink->sgot->output_offset | |
3457 | + hplink->sgot->output_section->vma); | |
74d1c347 | 3458 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
3459 | outrel.r_addend = relocation; |
3460 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3461 | ((Elf32_External_Rela *) | |
3462 | srelgot->contents | |
3463 | + srelgot->reloc_count)); | |
3464 | ++srelgot->reloc_count; | |
3465 | } | |
252b5132 | 3466 | |
30667bf3 AM |
3467 | local_got_offsets[r_symndx] |= 1; |
3468 | } | |
252b5132 | 3469 | |
30667bf3 AM |
3470 | relocation = off; |
3471 | } | |
252b5132 | 3472 | |
30667bf3 AM |
3473 | /* Add the base of the GOT to the relocation value. */ |
3474 | relocation += (hplink->sgot->output_offset | |
3475 | + hplink->sgot->output_section->vma); | |
3476 | break; | |
252b5132 | 3477 | |
30667bf3 AM |
3478 | case R_PARISC_PLABEL14R: |
3479 | case R_PARISC_PLABEL21L: | |
3480 | case R_PARISC_PLABEL32: | |
74d1c347 | 3481 | if (hplink->root.dynamic_sections_created) |
252b5132 | 3482 | { |
74d1c347 AM |
3483 | bfd_vma off; |
3484 | ||
3485 | /* If we have a global symbol with a PLT slot, then | |
3486 | redirect this relocation to it. */ | |
3487 | if (h != NULL) | |
3488 | { | |
3489 | off = h->elf.plt.offset; | |
3490 | } | |
3491 | else | |
3492 | { | |
3493 | int indx; | |
3494 | ||
3495 | indx = r_symndx + symtab_hdr->sh_info; | |
3496 | off = local_got_offsets[indx]; | |
3497 | ||
3498 | /* As for the local .got entry case, we use the last | |
3499 | bit to record whether we've already initialised | |
3500 | this local .plt entry. */ | |
3501 | if ((off & 1) != 0) | |
3502 | off &= ~1; | |
3503 | else | |
3504 | { | |
3505 | bfd_put_32 (output_bfd, | |
3506 | relocation, | |
3507 | hplink->splt->contents + off); | |
3508 | bfd_put_32 (output_bfd, | |
3509 | elf_gp (hplink->splt->output_section->owner), | |
3510 | hplink->splt->contents + off + 4); | |
3511 | ||
3512 | if (info->shared) | |
3513 | { | |
3514 | /* Output a dynamic IPLT relocation for this | |
3515 | PLT entry. */ | |
3516 | Elf_Internal_Rela outrel; | |
3517 | asection *srelplt = hplink->srelplt; | |
3518 | ||
3519 | outrel.r_offset = (off | |
3520 | + hplink->splt->output_offset | |
3521 | + hplink->splt->output_section->vma); | |
3522 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3523 | outrel.r_addend = relocation; | |
3524 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3525 | ((Elf32_External_Rela *) | |
3526 | srelplt->contents | |
3527 | + srelplt->reloc_count)); | |
3528 | ++srelplt->reloc_count; | |
3529 | } | |
3530 | ||
3531 | local_got_offsets[indx] |= 1; | |
3532 | } | |
3533 | } | |
3534 | ||
3535 | BFD_ASSERT (off < (bfd_vma) -2); | |
3536 | ||
3537 | /* PLABELs contain function pointers. Relocation is to | |
3538 | the entry for the function in the .plt. The magic +2 | |
3539 | offset signals to $$dyncall that the function pointer | |
3540 | is in the .plt and thus has a gp pointer too. | |
3541 | Exception: Undefined PLABELs should have a value of | |
3542 | zero. */ | |
3543 | if (h == NULL | |
3544 | || (h->elf.root.type != bfd_link_hash_undefweak | |
3545 | && h->elf.root.type != bfd_link_hash_undefined)) | |
3546 | { | |
3547 | relocation = (off | |
3548 | + hplink->splt->output_offset | |
3549 | + hplink->splt->output_section->vma | |
3550 | + 2); | |
3551 | } | |
3552 | plabel = 1; | |
30667bf3 AM |
3553 | } |
3554 | /* Fall through and possibly emit a dynamic relocation. */ | |
3555 | ||
3556 | case R_PARISC_DIR17F: | |
3557 | case R_PARISC_DIR17R: | |
3558 | case R_PARISC_DIR14R: | |
3559 | case R_PARISC_DIR21L: | |
3560 | case R_PARISC_DPREL14F: | |
3561 | case R_PARISC_DPREL14R: | |
3562 | case R_PARISC_DPREL21L: | |
3563 | case R_PARISC_DIR32: | |
3564 | /* The reloc types handled here and this conditional | |
3565 | expression must match the code in check_relocs and | |
3566 | hppa_discard_copies. ie. We need exactly the same | |
3567 | condition as in check_relocs, with some extra conditions | |
3568 | (dynindx test in this case) to cater for relocs removed | |
3569 | by hppa_discard_copies. */ | |
3570 | if ((input_section->flags & SEC_ALLOC) != 0 | |
3571 | && info->shared | |
3572 | #if RELATIVE_DYNAMIC_RELOCS | |
3573 | && (is_absolute_reloc (r_type) | |
3574 | || ((!info->symbolic | |
3575 | || (h != NULL | |
3576 | && ((h->elf.elf_link_hash_flags | |
3577 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3578 | || h->elf.root.type == bfd_link_hash_defweak))) | |
3579 | && (h == NULL || h->elf.dynindx != -1))) | |
3580 | #endif | |
3581 | ) | |
3582 | { | |
3583 | Elf_Internal_Rela outrel; | |
3584 | boolean skip; | |
252b5132 | 3585 | |
30667bf3 AM |
3586 | /* When generating a shared object, these relocations |
3587 | are copied into the output file to be resolved at run | |
3588 | time. */ | |
252b5132 | 3589 | |
30667bf3 | 3590 | if (sreloc == NULL) |
edd21aca | 3591 | { |
30667bf3 AM |
3592 | const char *name; |
3593 | ||
3594 | name = (bfd_elf_string_from_elf_section | |
3595 | (input_bfd, | |
3596 | elf_elfheader (input_bfd)->e_shstrndx, | |
3597 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3598 | if (name == NULL) | |
3599 | return false; | |
3600 | sreloc = bfd_get_section_by_name (dynobj, name); | |
3601 | BFD_ASSERT (sreloc != NULL); | |
edd21aca | 3602 | } |
252b5132 | 3603 | |
30667bf3 AM |
3604 | outrel.r_offset = rel->r_offset; |
3605 | outrel.r_addend = rel->r_addend; | |
3606 | skip = false; | |
3607 | if (elf_section_data (input_section)->stab_info != NULL) | |
edd21aca | 3608 | { |
30667bf3 AM |
3609 | bfd_vma off; |
3610 | ||
3611 | off = (_bfd_stab_section_offset | |
74d1c347 | 3612 | (output_bfd, &hplink->root.stab_info, |
30667bf3 AM |
3613 | input_section, |
3614 | &elf_section_data (input_section)->stab_info, | |
3615 | rel->r_offset)); | |
3616 | if (off == (bfd_vma) -1) | |
3617 | skip = true; | |
3618 | outrel.r_offset = off; | |
edd21aca | 3619 | } |
252b5132 | 3620 | |
30667bf3 AM |
3621 | outrel.r_offset += (input_section->output_offset |
3622 | + input_section->output_section->vma); | |
3623 | ||
3624 | if (skip) | |
252b5132 | 3625 | { |
30667bf3 | 3626 | memset (&outrel, 0, sizeof (outrel)); |
252b5132 | 3627 | } |
74d1c347 AM |
3628 | else if (h != NULL |
3629 | && h->elf.dynindx != -1 | |
3630 | && (plabel | |
3631 | || !info->symbolic | |
30667bf3 AM |
3632 | || (h->elf.elf_link_hash_flags |
3633 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 3634 | { |
30667bf3 AM |
3635 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); |
3636 | } | |
3637 | else /* It's a local symbol, or one marked to become local. */ | |
3638 | { | |
3639 | int indx = 0; | |
edd21aca | 3640 | |
30667bf3 AM |
3641 | /* Add the absolute offset of the symbol. */ |
3642 | outrel.r_addend += relocation; | |
edd21aca | 3643 | |
74d1c347 AM |
3644 | /* Global plabels need to be processed by the |
3645 | dynamic linker so that functions have at most one | |
3646 | fptr. For this reason, we need to differentiate | |
3647 | between global and local plabels, which we do by | |
3648 | providing the function symbol for a global plabel | |
3649 | reloc, and no symbol for local plabels. */ | |
3650 | if (! plabel | |
3651 | && sym_sec != NULL | |
30667bf3 AM |
3652 | && sym_sec->output_section != NULL |
3653 | && ! bfd_is_abs_section (sym_sec)) | |
252b5132 | 3654 | { |
30667bf3 AM |
3655 | indx = elf_section_data (sym_sec->output_section)->dynindx; |
3656 | /* We are turning this relocation into one | |
3657 | against a section symbol, so subtract out the | |
3658 | output section's address but not the offset | |
3659 | of the input section in the output section. */ | |
3660 | outrel.r_addend -= sym_sec->output_section->vma; | |
252b5132 | 3661 | } |
252b5132 | 3662 | |
30667bf3 AM |
3663 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
3664 | } | |
edd21aca | 3665 | |
30667bf3 AM |
3666 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3667 | ((Elf32_External_Rela *) | |
3668 | sreloc->contents | |
3669 | + sreloc->reloc_count)); | |
3670 | ++sreloc->reloc_count; | |
3671 | } | |
3672 | break; | |
edd21aca | 3673 | |
30667bf3 AM |
3674 | default: |
3675 | break; | |
3676 | } | |
252b5132 | 3677 | |
30667bf3 AM |
3678 | r = final_link_relocate (input_section, contents, rel, relocation, |
3679 | info, sym_sec, h); | |
252b5132 | 3680 | |
30667bf3 AM |
3681 | if (r == bfd_reloc_ok) |
3682 | continue; | |
252b5132 | 3683 | |
30667bf3 AM |
3684 | if (h != NULL) |
3685 | sym_name = h->elf.root.root.string; | |
3686 | else | |
3687 | { | |
3688 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
3689 | symtab_hdr->sh_link, | |
3690 | sym->st_name); | |
3691 | if (sym_name == NULL) | |
3692 | return false; | |
3693 | if (*sym_name == '\0') | |
3694 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
3695 | } | |
edd21aca | 3696 | |
30667bf3 | 3697 | howto = elf_hppa_howto_table + r_type; |
252b5132 | 3698 | |
30667bf3 AM |
3699 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported) |
3700 | { | |
3701 | (*_bfd_error_handler) | |
3702 | (_("%s(%s+0x%lx): cannot handle %s for %s"), | |
3703 | bfd_get_filename (input_bfd), | |
3704 | input_section->name, | |
3705 | (long) rel->r_offset, | |
3706 | howto->name, | |
3707 | sym_name); | |
3708 | } | |
3709 | else | |
3710 | { | |
3711 | if (!((*info->callbacks->reloc_overflow) | |
3712 | (info, sym_name, howto->name, (bfd_vma) 0, | |
3713 | input_bfd, input_section, rel->r_offset))) | |
3714 | return false; | |
3715 | } | |
3716 | } | |
edd21aca | 3717 | |
30667bf3 AM |
3718 | return true; |
3719 | } | |
252b5132 | 3720 | |
edd21aca | 3721 | |
30667bf3 AM |
3722 | /* Finish up dynamic symbol handling. We set the contents of various |
3723 | dynamic sections here. */ | |
252b5132 | 3724 | |
30667bf3 AM |
3725 | static boolean |
3726 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) | |
3727 | bfd *output_bfd; | |
3728 | struct bfd_link_info *info; | |
3729 | struct elf_link_hash_entry *h; | |
3730 | Elf_Internal_Sym *sym; | |
3731 | { | |
3732 | struct elf32_hppa_link_hash_table *hplink; | |
3733 | bfd *dynobj; | |
edd21aca | 3734 | |
30667bf3 | 3735 | hplink = hppa_link_hash_table (info); |
74d1c347 | 3736 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
3737 | |
3738 | /* Millicode symbols should not be put in the dynamic | |
3739 | symbol table under any circumstances. */ | |
3740 | if (ELF_ST_TYPE (sym->st_info) == STT_PARISC_MILLI) | |
3741 | h->dynindx = -1; | |
3742 | ||
3743 | if (h->plt.offset != (bfd_vma) -1) | |
3744 | { | |
3745 | bfd_vma value; | |
3746 | Elf_Internal_Rela rel; | |
3747 | ||
3748 | /* This symbol has an entry in the procedure linkage table. Set | |
3749 | it up. | |
3750 | ||
3751 | The format of a plt entry is | |
74d1c347 AM |
3752 | <funcaddr> |
3753 | <__gp> | |
3754 | <used by ld.so> | |
3755 | ||
3756 | The last field is present only for plt entries that are used | |
3757 | by global plabels. */ | |
30667bf3 AM |
3758 | |
3759 | /* We do not actually care about the value in the PLT entry if | |
3760 | we are creating a shared library and the symbol is still | |
3761 | undefined; We create a dynamic relocation to fill in the | |
3762 | correct value. */ | |
3763 | value = 0; | |
3764 | if (h->root.type == bfd_link_hash_defined | |
3765 | || h->root.type == bfd_link_hash_defweak) | |
3766 | { | |
3767 | value = h->root.u.def.value; | |
3768 | if (h->root.u.def.section->output_section != NULL) | |
3769 | value += (h->root.u.def.section->output_offset | |
3770 | + h->root.u.def.section->output_section->vma); | |
252b5132 | 3771 | } |
edd21aca | 3772 | |
74d1c347 AM |
3773 | bfd_put_32 (hplink->splt->owner, |
3774 | value, | |
30667bf3 | 3775 | hplink->splt->contents + h->plt.offset); |
74d1c347 AM |
3776 | bfd_put_32 (hplink->splt->owner, |
3777 | elf_gp (hplink->splt->output_section->owner), | |
30667bf3 | 3778 | hplink->splt->contents + h->plt.offset + 4); |
74d1c347 AM |
3779 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE |
3780 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
30667bf3 | 3781 | && h->dynindx != -1) |
74d1c347 AM |
3782 | { |
3783 | memset (hplink->splt->contents + h->plt.offset + 8, | |
3784 | 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE); | |
3785 | } | |
3786 | ||
3787 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
30667bf3 AM |
3788 | { |
3789 | /* Create a dynamic IPLT relocation for this entry. */ | |
3790 | rel.r_offset = (h->plt.offset | |
3791 | + hplink->splt->output_offset | |
3792 | + hplink->splt->output_section->vma); | |
74d1c347 AM |
3793 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs |
3794 | && h->dynindx != -1) | |
3795 | { | |
3796 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); | |
3797 | rel.r_addend = 0; | |
3798 | } | |
3799 | else | |
3800 | { | |
3801 | /* This symbol has been marked to become local, and is | |
3802 | used by a plabel so must be kept in the .plt. */ | |
3803 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3804 | rel.r_addend = value; | |
3805 | } | |
30667bf3 AM |
3806 | |
3807 | bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner, | |
3808 | &rel, | |
3809 | ((Elf32_External_Rela *) | |
3810 | hplink->srelplt->contents | |
3811 | + hplink->srelplt->reloc_count)); | |
3812 | hplink->srelplt->reloc_count++; | |
3813 | } | |
3814 | ||
3815 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3816 | { | |
3817 | /* Mark the symbol as undefined, rather than as defined in | |
3818 | the .plt section. Leave the value alone. */ | |
3819 | sym->st_shndx = SHN_UNDEF; | |
3820 | } | |
3821 | } | |
edd21aca | 3822 | |
30667bf3 AM |
3823 | if (h->got.offset != (bfd_vma) -1) |
3824 | { | |
3825 | Elf_Internal_Rela rel; | |
3826 | ||
3827 | /* This symbol has an entry in the global offset table. Set it | |
3828 | up. */ | |
3829 | ||
3830 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) | |
3831 | + hplink->sgot->output_offset | |
3832 | + hplink->sgot->output_section->vma); | |
3833 | ||
3834 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3835 | symbol is defined locally or was forced to be local because | |
3836 | of a version file, we just want to emit a RELATIVE reloc. | |
3837 | The entry in the global offset table will already have been | |
3838 | initialized in the relocate_section function. */ | |
74d1c347 | 3839 | if (! hplink->root.dynamic_sections_created |
30667bf3 AM |
3840 | || (info->shared |
3841 | && (info->symbolic || h->dynindx == -1) | |
3842 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
3843 | { | |
74d1c347 | 3844 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
3845 | rel.r_addend = (h->root.u.def.value |
3846 | + h->root.u.def.section->output_offset | |
3847 | + h->root.u.def.section->output_section->vma); | |
3848 | } | |
3849 | else | |
3850 | { | |
3851 | BFD_ASSERT((h->got.offset & 1) == 0); | |
3852 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
3853 | hplink->sgot->contents + h->got.offset); | |
3854 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); | |
3855 | rel.r_addend = 0; | |
3856 | } | |
edd21aca | 3857 | |
30667bf3 AM |
3858 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
3859 | ((Elf32_External_Rela *) | |
3860 | hplink->srelgot->contents | |
3861 | + hplink->srelgot->reloc_count)); | |
3862 | ++hplink->srelgot->reloc_count; | |
3863 | } | |
edd21aca | 3864 | |
30667bf3 AM |
3865 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
3866 | { | |
3867 | asection *s; | |
3868 | Elf_Internal_Rela rel; | |
3869 | ||
3870 | /* This symbol needs a copy reloc. Set it up. */ | |
3871 | ||
3872 | BFD_ASSERT (h->dynindx != -1 | |
3873 | && (h->root.type == bfd_link_hash_defined | |
3874 | || h->root.type == bfd_link_hash_defweak)); | |
3875 | ||
3876 | s = hplink->srelbss; | |
3877 | ||
3878 | rel.r_offset = (h->root.u.def.value | |
3879 | + h->root.u.def.section->output_offset | |
3880 | + h->root.u.def.section->output_section->vma); | |
3881 | rel.r_addend = 0; | |
3882 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); | |
3883 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
3884 | ((Elf32_External_Rela *) s->contents | |
3885 | + s->reloc_count)); | |
3886 | ++s->reloc_count; | |
3887 | } | |
3888 | ||
3889 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3890 | if (h->root.root.string[0] == '_' | |
3891 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3892 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) | |
3893 | { | |
3894 | sym->st_shndx = SHN_ABS; | |
3895 | } | |
3896 | ||
3897 | return true; | |
3898 | } | |
3899 | ||
3900 | ||
3901 | /* Finish up the dynamic sections. */ | |
3902 | ||
3903 | static boolean | |
3904 | elf32_hppa_finish_dynamic_sections (output_bfd, info) | |
3905 | bfd *output_bfd; | |
3906 | struct bfd_link_info *info; | |
3907 | { | |
3908 | bfd *dynobj; | |
3909 | struct elf32_hppa_link_hash_table *hplink; | |
3910 | asection *sdyn; | |
3911 | ||
30667bf3 | 3912 | hplink = hppa_link_hash_table (info); |
74d1c347 | 3913 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
3914 | |
3915 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
3916 | ||
74d1c347 | 3917 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
3918 | { |
3919 | Elf32_External_Dyn *dyncon, *dynconend; | |
3920 | ||
3921 | BFD_ASSERT (sdyn != NULL); | |
3922 | ||
3923 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3924 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3925 | for (; dyncon < dynconend; dyncon++) | |
edd21aca | 3926 | { |
30667bf3 AM |
3927 | Elf_Internal_Dyn dyn; |
3928 | asection *s; | |
3929 | ||
3930 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3931 | ||
3932 | switch (dyn.d_tag) | |
3933 | { | |
3934 | default: | |
3935 | break; | |
3936 | ||
3937 | case DT_PLTGOT: | |
3938 | /* Use PLTGOT to set the GOT register. */ | |
3939 | dyn.d_un.d_ptr = elf_gp (output_bfd); | |
3940 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3941 | break; | |
3942 | ||
3943 | case DT_JMPREL: | |
3944 | s = hplink->srelplt; | |
3945 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
3946 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3947 | break; | |
3948 | ||
3949 | case DT_PLTRELSZ: | |
3950 | s = hplink->srelplt; | |
3951 | if (s->_cooked_size != 0) | |
3952 | dyn.d_un.d_val = s->_cooked_size; | |
3953 | else | |
3954 | dyn.d_un.d_val = s->_raw_size; | |
3955 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3956 | break; | |
74d1c347 AM |
3957 | |
3958 | case DT_INIT: | |
3959 | case DT_FINI: | |
3960 | { | |
3961 | struct elf_link_hash_entry *h; | |
3962 | const char *funcname; | |
3963 | ||
3964 | if (dyn.d_tag == DT_INIT) | |
3965 | funcname = info->init_function; | |
3966 | else | |
3967 | funcname = info->fini_function; | |
3968 | ||
3969 | h = elf_link_hash_lookup (&hplink->root, funcname, | |
3970 | false, false, false); | |
3971 | ||
3972 | /* This is a function pointer. The magic +2 offset | |
3973 | signals to $$dyncall that the function pointer | |
3974 | is in the .plt and thus has a gp pointer too. */ | |
3975 | dyn.d_un.d_ptr = (h->plt.offset | |
3976 | + hplink->splt->output_offset | |
3977 | + hplink->splt->output_section->vma | |
3978 | + 2); | |
3979 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3980 | break; | |
3981 | } | |
30667bf3 | 3982 | } |
edd21aca | 3983 | } |
252b5132 | 3984 | } |
edd21aca | 3985 | |
30667bf3 AM |
3986 | if (hplink->sgot->_raw_size != 0) |
3987 | { | |
74d1c347 AM |
3988 | /* Fill in the first entry in the global offset table. |
3989 | We use it to point to our dynamic section, if we have one. */ | |
30667bf3 AM |
3990 | bfd_put_32 (output_bfd, |
3991 | (sdyn != NULL | |
3992 | ? sdyn->output_section->vma + sdyn->output_offset | |
3993 | : (bfd_vma) 0), | |
3994 | hplink->sgot->contents); | |
3995 | ||
74d1c347 AM |
3996 | /* The second entry is reserved for use by the dynamic linker. */ |
3997 | bfd_put_32 (output_bfd, (bfd_vma) 0, hplink->sgot->contents + 4); | |
3998 | ||
30667bf3 | 3999 | /* Set .got entry size. */ |
74d1c347 AM |
4000 | elf_section_data (hplink->sgot->output_section) |
4001 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
30667bf3 AM |
4002 | } |
4003 | ||
4004 | /* Set plt entry size. */ | |
4005 | if (hplink->splt->_raw_size != 0) | |
74d1c347 AM |
4006 | elf_section_data (hplink->splt->output_section) |
4007 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; | |
30667bf3 | 4008 | |
252b5132 | 4009 | return true; |
30667bf3 | 4010 | } |
252b5132 | 4011 | |
edd21aca | 4012 | |
30667bf3 AM |
4013 | /* Called when writing out an object file to decide the type of a |
4014 | symbol. */ | |
4015 | static int | |
4016 | elf32_hppa_elf_get_symbol_type (elf_sym, type) | |
4017 | Elf_Internal_Sym *elf_sym; | |
4018 | int type; | |
4019 | { | |
4020 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
4021 | return STT_PARISC_MILLI; | |
4022 | else | |
4023 | return type; | |
252b5132 RH |
4024 | } |
4025 | ||
30667bf3 | 4026 | |
252b5132 | 4027 | /* Misc BFD support code. */ |
30667bf3 AM |
4028 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name |
4029 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
4030 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4031 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
252b5132 | 4032 | |
252b5132 | 4033 | /* Stuff for the BFD linker. */ |
30667bf3 AM |
4034 | #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link |
4035 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create | |
4036 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook | |
4037 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol | |
4038 | #define elf_backend_check_relocs elf32_hppa_check_relocs | |
4039 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections | |
4040 | #define elf_backend_fake_sections elf_hppa_fake_sections | |
4041 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
74d1c347 | 4042 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol |
30667bf3 AM |
4043 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol |
4044 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections | |
4045 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections | |
4046 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook | |
4047 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook | |
4048 | #define elf_backend_object_p elf32_hppa_object_p | |
4049 | #define elf_backend_final_write_processing elf_hppa_final_write_processing | |
4050 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type | |
4051 | ||
4052 | #define elf_backend_can_gc_sections 1 | |
4053 | #define elf_backend_plt_alignment 2 | |
4054 | #define elf_backend_want_got_plt 0 | |
4055 | #define elf_backend_plt_readonly 0 | |
4056 | #define elf_backend_want_plt_sym 0 | |
74d1c347 | 4057 | #define elf_backend_got_header_size 8 |
252b5132 RH |
4058 | |
4059 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec | |
4060 | #define TARGET_BIG_NAME "elf32-hppa" | |
4061 | #define ELF_ARCH bfd_arch_hppa | |
4062 | #define ELF_MACHINE_CODE EM_PARISC | |
4063 | #define ELF_MAXPAGESIZE 0x1000 | |
4064 | ||
4065 | #include "elf32-target.h" |