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 | |
edd21aca | 39 | /* We use two hash tables to hold information for linking PA ELF objects. |
252b5132 RH |
40 | |
41 | The first is the elf32_hppa_link_hash_table which is derived | |
42 | from the standard ELF linker hash table. We use this as a place to | |
43 | attach other hash tables and static information. | |
44 | ||
45 | The second is the stub hash table which is derived from the | |
46 | base BFD hash table. The stub hash table holds the information | |
30667bf3 AM |
47 | necessary to build the linker stubs during a link. |
48 | ||
49 | There are a number of different stubs generated by the linker. | |
50 | ||
51 | Long branch stub: | |
52 | : ldil LR'X,%r1 | |
53 | : be,n RR'X(%sr4,%r1) | |
54 | ||
55 | PIC long branch stub: | |
56 | : b,l .+8,%r1 | |
57 | : addil L'X - ($PIC_pcrel$0 - 4),%r1 | |
58 | : be,n R'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) | |
59 | ||
60 | Import stub to call shared library routine from normal object file | |
61 | (single sub-space version) | |
62 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
63 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
64 | : bv %r0(%r21) | |
65 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
66 | ||
67 | Import stub to call shared library routine from shared library | |
68 | (single sub-space version) | |
69 | : addil L'ltoff,%r19 ; get procedure entry point | |
70 | : ldw R'ltoff(%r1),%r21 | |
71 | : bv %r0(%r21) | |
72 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
73 | ||
74 | Import stub to call shared library routine from normal object file | |
75 | (multiple sub-space support) | |
76 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
77 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
78 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
79 | : ldsid (%r21),%r1 | |
80 | : mtsp %r1,%sr0 | |
81 | : be 0(%sr0,%r21) ; branch to target | |
82 | : stw %rp,-24(%sp) ; save rp | |
83 | ||
84 | Import stub to call shared library routine from shared library | |
85 | (multiple sub-space support) | |
86 | : addil L'ltoff,%r19 ; get procedure entry point | |
87 | : ldw R'ltoff(%r1),%r21 | |
88 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
89 | : ldsid (%r21),%r1 | |
90 | : mtsp %r1,%sr0 | |
91 | : be 0(%sr0,%r21) ; branch to target | |
92 | : stw %rp,-24(%sp) ; save rp | |
93 | ||
94 | Export stub to return from shared lib routine (multiple sub-space support) | |
95 | One of these is created for each exported procedure in a shared | |
96 | library (and stored in the shared lib). Shared lib routines are | |
97 | called via the first instruction in the export stub so that we can | |
98 | do an inter-space return. Not required for single sub-space. | |
99 | : bl,n X,%rp ; trap the return | |
100 | : nop | |
101 | : ldw -24(%sp),%rp ; restore the original rp | |
102 | : ldsid (%rp),%r1 | |
103 | : mtsp %r1,%sr0 | |
104 | : be,n 0(%sr0,%rp) ; inter-space return | |
105 | */ | |
106 | ||
107 | #define PLT_ENTRY_SIZE 8 | |
108 | #define GOT_ENTRY_SIZE 4 | |
109 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
110 | ||
111 | /* Section name for stubs is the associated section name plus this | |
112 | string. */ | |
113 | #define STUB_SUFFIX ".stub" | |
114 | ||
115 | /* Setting the following non-zero makes all long branch stubs | |
116 | generated during a shared link of the PIC variety. This saves on | |
117 | relocs, but costs one extra instruction per stub. */ | |
118 | #ifndef LONG_BRANCH_PIC_IN_SHLIB | |
119 | #define LONG_BRANCH_PIC_IN_SHLIB 1 | |
120 | #endif | |
252b5132 | 121 | |
30667bf3 AM |
122 | /* We don't need to copy any PC- or GP-relative dynamic relocs into a |
123 | shared object's dynamic section. */ | |
124 | #ifndef RELATIVE_DYNAMIC_RELOCS | |
125 | #define RELATIVE_DYNAMIC_RELOCS 0 | |
126 | #endif | |
127 | ||
128 | ||
129 | enum elf32_hppa_stub_type { | |
130 | hppa_stub_long_branch, | |
131 | hppa_stub_long_branch_shared, | |
132 | hppa_stub_import, | |
133 | hppa_stub_import_shared, | |
134 | hppa_stub_export, | |
135 | hppa_stub_none | |
136 | }; | |
137 | ||
138 | ||
139 | struct elf32_hppa_stub_hash_entry { | |
252b5132 | 140 | |
edd21aca | 141 | /* Base hash table entry structure. */ |
252b5132 RH |
142 | struct bfd_hash_entry root; |
143 | ||
edd21aca AM |
144 | /* The stub section. */ |
145 | asection *stub_sec; | |
146 | ||
30667bf3 AM |
147 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
148 | /* It's associated reloc section. */ | |
149 | asection *reloc_sec; | |
150 | #endif | |
151 | ||
edd21aca | 152 | /* Offset within stub_sec of the beginning of this stub. */ |
30667bf3 | 153 | bfd_vma stub_offset; |
252b5132 RH |
154 | |
155 | /* Given the symbol's value and its section we can determine its final | |
156 | value when building the stubs (so the stub knows where to jump. */ | |
30667bf3 | 157 | bfd_vma target_value; |
252b5132 | 158 | asection *target_section; |
30667bf3 AM |
159 | |
160 | enum elf32_hppa_stub_type stub_type; | |
161 | ||
162 | /* The symbol table entry, if any, that this was derived from. */ | |
163 | struct elf32_hppa_link_hash_entry *h; | |
164 | ||
165 | /* Where this stub is being called from. */ | |
166 | asection *input_section; | |
252b5132 RH |
167 | }; |
168 | ||
30667bf3 AM |
169 | |
170 | struct elf32_hppa_link_hash_entry { | |
171 | ||
172 | struct elf_link_hash_entry elf; | |
173 | ||
174 | /* A pointer to the most recently used stub hash entry against this | |
175 | symbol. */ | |
176 | struct elf32_hppa_stub_hash_entry *stub_cache; | |
177 | ||
178 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
179 | /* Used to track whether we have allocated space for a long branch | |
180 | stub relocation for this symbol in the given section. */ | |
181 | asection *stub_reloc_sec; | |
182 | #endif | |
183 | ||
184 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
185 | /* Used to count relocations for delayed sizing of relocation | |
186 | sections. */ | |
187 | struct elf32_hppa_dyn_reloc_entry { | |
188 | ||
189 | /* Next relocation in the chain. */ | |
190 | struct elf32_hppa_dyn_reloc_entry *next; | |
191 | ||
192 | /* The section in dynobj. */ | |
193 | asection *section; | |
194 | ||
195 | /* Number of relocs copied in this section. */ | |
196 | bfd_size_type count; | |
197 | } *reloc_entries; | |
198 | #endif | |
199 | ||
200 | /* Set during a static link if we detect a function is PIC. */ | |
201 | boolean pic_call; | |
202 | }; | |
203 | ||
204 | ||
205 | struct elf32_hppa_link_hash_table { | |
206 | ||
252b5132 RH |
207 | /* The main hash table. */ |
208 | struct elf_link_hash_table root; | |
209 | ||
210 | /* The stub hash table. */ | |
edd21aca | 211 | struct bfd_hash_table stub_hash_table; |
252b5132 | 212 | |
30667bf3 AM |
213 | /* Linker stub bfd. */ |
214 | bfd *stub_bfd; | |
215 | ||
216 | /* Whether we support multiple sub-spaces for shared libs. */ | |
217 | boolean multi_subspace; | |
218 | ||
219 | /* Linker call-backs. */ | |
220 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
221 | void (*layout_sections_again) PARAMS ((void)); | |
222 | ||
223 | /* Arrays to keep track of which stub sections have been created. */ | |
224 | asection **stub_section_created; | |
225 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
226 | asection **reloc_section_created; | |
227 | #endif | |
228 | int first_init_sec; | |
229 | int first_fini_sec; | |
230 | ||
edd21aca AM |
231 | /* Current offsets in the stub sections. */ |
232 | bfd_vma *offset; | |
252b5132 | 233 | |
30667bf3 AM |
234 | /* Short-cuts to get to dynamic linker sections. */ |
235 | asection *sgot; | |
236 | asection *srelgot; | |
237 | asection *splt; | |
238 | asection *srelplt; | |
239 | asection *sdynbss; | |
240 | asection *srelbss; | |
252b5132 RH |
241 | }; |
242 | ||
252b5132 | 243 | |
30667bf3 AM |
244 | /* Functions named elf32_hppa_* are called by external routines, other |
245 | functions are only called locally. elf32_hppa_* functions appear | |
246 | in this file more or less in the order in which they are called | |
247 | from external routines. eg. elf32_hppa_check_relocs is called | |
248 | early in the link process, elf32_hppa_finish_dynamic_sections is | |
249 | one of the last functions. */ | |
252b5132 | 250 | |
252b5132 | 251 | |
30667bf3 AM |
252 | /* Various hash macros and functions. */ |
253 | #define hppa_link_hash_table(p) \ | |
edd21aca | 254 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
252b5132 | 255 | |
30667bf3 AM |
256 | #define hppa_stub_hash_lookup(table, string, create, copy) \ |
257 | ((struct elf32_hppa_stub_hash_entry *) \ | |
258 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
259 | ||
260 | static struct bfd_hash_entry *stub_hash_newfunc | |
261 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
edd21aca | 262 | |
30667bf3 | 263 | static struct bfd_hash_entry *hppa_link_hash_newfunc |
edd21aca | 264 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 RH |
265 | |
266 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create | |
267 | PARAMS ((bfd *)); | |
268 | ||
252b5132 | 269 | |
30667bf3 AM |
270 | /* Stub handling functions. */ |
271 | static char *hppa_stub_name | |
272 | PARAMS ((const asection *, const asection *, | |
273 | const struct elf32_hppa_link_hash_entry *, | |
274 | const Elf_Internal_Rela *)); | |
edd21aca | 275 | |
30667bf3 AM |
276 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry |
277 | PARAMS ((const asection *, const asection *, | |
278 | struct elf32_hppa_link_hash_entry *, | |
279 | const Elf_Internal_Rela *, struct bfd_link_info *)); | |
edd21aca | 280 | |
30667bf3 AM |
281 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub |
282 | PARAMS ((const char *, asection *, unsigned int, | |
283 | struct bfd_link_info *)); | |
284 | ||
285 | static enum elf32_hppa_stub_type hppa_type_of_stub | |
286 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
287 | struct elf32_hppa_link_hash_entry *, bfd_vma)); | |
288 | ||
289 | static boolean hppa_build_one_stub | |
290 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
291 | ||
292 | static boolean hppa_size_one_stub | |
293 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
294 | ||
295 | ||
296 | /* BFD and elf backend functions. */ | |
297 | static boolean elf32_hppa_object_p PARAMS ((bfd *)); | |
252b5132 | 298 | |
edd21aca AM |
299 | static boolean elf32_hppa_add_symbol_hook |
300 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
301 | const char **, flagword *, asection **, bfd_vma *)); | |
252b5132 | 302 | |
30667bf3 AM |
303 | static boolean elf32_hppa_create_dynamic_sections |
304 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 | 305 | |
30667bf3 AM |
306 | static boolean elf32_hppa_check_relocs |
307 | PARAMS ((bfd *, struct bfd_link_info *, | |
308 | asection *, const Elf_Internal_Rela *)); | |
309 | ||
310 | static asection *elf32_hppa_gc_mark_hook | |
311 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
312 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
313 | ||
314 | static boolean elf32_hppa_gc_sweep_hook | |
315 | PARAMS ((bfd *, struct bfd_link_info *, | |
316 | asection *, const Elf_Internal_Rela *)); | |
317 | ||
318 | static boolean elf32_hppa_adjust_dynamic_symbol | |
319 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
320 | ||
321 | static boolean hppa_handle_PIC_calls | |
322 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
323 | ||
324 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
325 | static boolean hppa_discard_copies | |
326 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
327 | #endif | |
328 | ||
329 | static boolean elf32_hppa_size_dynamic_sections | |
330 | PARAMS ((bfd *, struct bfd_link_info *)); | |
331 | ||
332 | static bfd_reloc_status_type final_link_relocate | |
333 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, | |
334 | bfd_vma, struct bfd_link_info *, asection *, | |
335 | struct elf32_hppa_link_hash_entry *)); | |
336 | ||
337 | static boolean elf32_hppa_relocate_section | |
338 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
339 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
340 | ||
341 | static boolean elf32_hppa_finish_dynamic_symbol | |
342 | PARAMS ((bfd *, struct bfd_link_info *, | |
343 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
344 | ||
345 | static boolean elf32_hppa_finish_dynamic_sections | |
346 | PARAMS ((bfd *, struct bfd_link_info *)); | |
347 | ||
348 | static int elf32_hppa_elf_get_symbol_type | |
349 | PARAMS ((Elf_Internal_Sym *, int)); | |
252b5132 RH |
350 | |
351 | ||
252b5132 RH |
352 | /* Assorted hash table functions. */ |
353 | ||
354 | /* Initialize an entry in the stub hash table. */ | |
355 | ||
356 | static struct bfd_hash_entry * | |
30667bf3 | 357 | stub_hash_newfunc (entry, table, string) |
252b5132 RH |
358 | struct bfd_hash_entry *entry; |
359 | struct bfd_hash_table *table; | |
360 | const char *string; | |
361 | { | |
362 | struct elf32_hppa_stub_hash_entry *ret; | |
363 | ||
364 | ret = (struct elf32_hppa_stub_hash_entry *) entry; | |
365 | ||
366 | /* Allocate the structure if it has not already been allocated by a | |
367 | subclass. */ | |
368 | if (ret == NULL) | |
30667bf3 AM |
369 | { |
370 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
371 | bfd_hash_allocate (table, | |
372 | sizeof (struct elf32_hppa_stub_hash_entry))); | |
373 | if (ret == NULL) | |
374 | return NULL; | |
375 | } | |
252b5132 RH |
376 | |
377 | /* Call the allocation method of the superclass. */ | |
378 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
379 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
380 | ||
381 | if (ret) | |
382 | { | |
383 | /* Initialize the local fields. */ | |
edd21aca | 384 | ret->stub_sec = NULL; |
30667bf3 AM |
385 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
386 | ret->reloc_sec = NULL; | |
387 | #endif | |
388 | ret->stub_offset = 0; | |
252b5132 RH |
389 | ret->target_value = 0; |
390 | ret->target_section = NULL; | |
30667bf3 AM |
391 | ret->stub_type = hppa_stub_long_branch; |
392 | ret->h = NULL; | |
393 | ret->input_section = NULL; | |
394 | } | |
395 | ||
396 | return (struct bfd_hash_entry *) ret; | |
397 | } | |
398 | ||
399 | ||
400 | /* Initialize an entry in the link hash table. */ | |
401 | ||
402 | static struct bfd_hash_entry * | |
403 | hppa_link_hash_newfunc (entry, table, string) | |
404 | struct bfd_hash_entry *entry; | |
405 | struct bfd_hash_table *table; | |
406 | const char *string; | |
407 | { | |
408 | struct elf32_hppa_link_hash_entry *ret; | |
409 | ||
410 | ret = (struct elf32_hppa_link_hash_entry *) entry; | |
411 | ||
412 | /* Allocate the structure if it has not already been allocated by a | |
413 | subclass. */ | |
414 | if (ret == NULL) | |
415 | { | |
416 | ret = ((struct elf32_hppa_link_hash_entry *) | |
417 | bfd_hash_allocate (table, | |
418 | sizeof (struct elf32_hppa_link_hash_entry))); | |
419 | if (ret == NULL) | |
420 | return NULL; | |
421 | } | |
422 | ||
423 | /* Call the allocation method of the superclass. */ | |
424 | ret = ((struct elf32_hppa_link_hash_entry *) | |
425 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
426 | table, string)); | |
427 | ||
428 | if (ret) | |
429 | { | |
430 | /* Initialize the local fields. */ | |
431 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
432 | ret->stub_reloc_sec = NULL; | |
433 | #endif | |
434 | ret->stub_cache = NULL; | |
435 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
436 | ret->reloc_entries = NULL; | |
437 | #endif | |
438 | ret->pic_call = 0; | |
252b5132 RH |
439 | } |
440 | ||
441 | return (struct bfd_hash_entry *) ret; | |
442 | } | |
443 | ||
30667bf3 | 444 | |
252b5132 RH |
445 | /* Create the derived linker hash table. The PA ELF port uses the derived |
446 | hash table to keep information specific to the PA ELF linker (without | |
447 | using static variables). */ | |
448 | ||
449 | static struct bfd_link_hash_table * | |
450 | elf32_hppa_link_hash_table_create (abfd) | |
451 | bfd *abfd; | |
452 | { | |
453 | struct elf32_hppa_link_hash_table *ret; | |
454 | ||
edd21aca | 455 | ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret))); |
252b5132 RH |
456 | if (ret == NULL) |
457 | return NULL; | |
edd21aca | 458 | |
30667bf3 | 459 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) |
252b5132 RH |
460 | { |
461 | bfd_release (abfd, ret); | |
462 | return NULL; | |
463 | } | |
edd21aca AM |
464 | |
465 | /* Init the stub hash table too. */ | |
30667bf3 | 466 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) |
edd21aca AM |
467 | return NULL; |
468 | ||
30667bf3 AM |
469 | ret->stub_bfd = NULL; |
470 | ret->multi_subspace = 0; | |
471 | ret->add_stub_section = NULL; | |
472 | ret->layout_sections_again = NULL; | |
473 | ret->stub_section_created = NULL; | |
474 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
475 | ret->reloc_section_created = NULL; | |
476 | #endif | |
477 | ret->first_init_sec = 0; | |
478 | ret->first_fini_sec = 0; | |
edd21aca | 479 | ret->offset = NULL; |
30667bf3 AM |
480 | ret->sgot = NULL; |
481 | ret->srelgot = NULL; | |
482 | ret->splt = NULL; | |
483 | ret->srelplt = NULL; | |
484 | ret->sdynbss = NULL; | |
485 | ret->srelbss = NULL; | |
252b5132 RH |
486 | |
487 | return &ret->root.root; | |
488 | } | |
489 | ||
30667bf3 AM |
490 | |
491 | /* Build a name for an entry in the stub hash table. */ | |
492 | ||
edd21aca | 493 | static char * |
30667bf3 | 494 | hppa_stub_name (input_section, sym_sec, hash, rel) |
edd21aca | 495 | const asection *input_section; |
30667bf3 AM |
496 | const asection *sym_sec; |
497 | const struct elf32_hppa_link_hash_entry *hash; | |
498 | const Elf_Internal_Rela *rel; | |
edd21aca AM |
499 | { |
500 | char *stub_name; | |
30667bf3 | 501 | unsigned int len; |
edd21aca | 502 | |
30667bf3 AM |
503 | if (hash) |
504 | { | |
505 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
506 | stub_name = bfd_malloc (len); | |
507 | if (stub_name != NULL) | |
508 | { | |
509 | sprintf (stub_name, "%08x_%s+%x", | |
510 | input_section->id & 0xffffffff, | |
511 | hash->elf.root.root.string, | |
512 | (int) rel->r_addend & 0xffffffff); | |
513 | } | |
514 | } | |
515 | else | |
edd21aca | 516 | { |
30667bf3 AM |
517 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
518 | stub_name = bfd_malloc (len); | |
519 | if (stub_name != NULL) | |
520 | { | |
521 | sprintf (stub_name, "%08x_%x:%x+%x", | |
522 | input_section->id & 0xffffffff, | |
523 | sym_sec->id & 0xffffffff, | |
524 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
525 | (int) rel->r_addend & 0xffffffff); | |
526 | } | |
edd21aca AM |
527 | } |
528 | return stub_name; | |
529 | } | |
252b5132 | 530 | |
edd21aca | 531 | |
30667bf3 AM |
532 | /* Look up an entry in the stub hash. Stub entries are cached because |
533 | creating the stub name takes a bit of time. */ | |
534 | ||
535 | static struct elf32_hppa_stub_hash_entry * | |
536 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, info) | |
537 | const asection *input_section; | |
538 | const asection *sym_sec; | |
539 | struct elf32_hppa_link_hash_entry *hash; | |
540 | const Elf_Internal_Rela *rel; | |
541 | struct bfd_link_info *info; | |
252b5132 | 542 | { |
30667bf3 | 543 | struct elf32_hppa_stub_hash_entry *stub_entry; |
edd21aca | 544 | |
30667bf3 AM |
545 | if (hash != NULL && hash->stub_cache != NULL |
546 | && hash->stub_cache->h == hash | |
547 | && hash->stub_cache->input_section == input_section) | |
edd21aca | 548 | { |
30667bf3 AM |
549 | stub_entry = hash->stub_cache; |
550 | } | |
551 | else | |
552 | { | |
553 | struct bfd_hash_table *stub_hash_table; | |
554 | char *stub_name; | |
edd21aca | 555 | |
30667bf3 AM |
556 | stub_name = hppa_stub_name (input_section, sym_sec, hash, rel); |
557 | if (stub_name == NULL) | |
558 | return NULL; | |
edd21aca | 559 | |
30667bf3 AM |
560 | stub_hash_table = &hppa_link_hash_table (info)->stub_hash_table; |
561 | ||
562 | stub_entry = hppa_stub_hash_lookup (stub_hash_table, stub_name, | |
563 | false, false); | |
564 | if (stub_entry == NULL) | |
565 | { | |
566 | if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak) | |
567 | (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"), | |
568 | bfd_get_filename (input_section->owner), | |
569 | input_section->name, | |
570 | (long) rel->r_offset, | |
571 | stub_name); | |
572 | } | |
573 | else | |
574 | { | |
575 | if (hash != NULL) | |
576 | hash->stub_cache = stub_entry; | |
577 | } | |
578 | ||
579 | free (stub_name); | |
edd21aca | 580 | } |
30667bf3 AM |
581 | |
582 | return stub_entry; | |
583 | } | |
584 | ||
585 | ||
586 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
587 | stub entry are initialised. */ | |
588 | ||
589 | static struct elf32_hppa_stub_hash_entry * | |
590 | hppa_add_stub (stub_name, section, sec_count, info) | |
591 | const char *stub_name; | |
592 | asection *section; | |
593 | unsigned int sec_count; | |
594 | struct bfd_link_info *info; | |
595 | { | |
596 | asection *stub_sec; | |
597 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
598 | asection *reloc_sec; | |
edd21aca | 599 | #endif |
30667bf3 AM |
600 | struct elf32_hppa_stub_hash_entry *stub_entry; |
601 | struct elf32_hppa_link_hash_table *hplink; | |
edd21aca | 602 | |
30667bf3 AM |
603 | hplink = hppa_link_hash_table (info); |
604 | stub_sec = hplink->stub_section_created[sec_count]; | |
605 | if (stub_sec == NULL) | |
edd21aca | 606 | { |
30667bf3 AM |
607 | int special_sec = 0; |
608 | ||
609 | /* We only want one stub for .init and .fini because glibc | |
610 | splits the _init and _fini functions into two parts. We | |
611 | don't want to put a stub in the middle of a function. | |
612 | It would be better to merge all the stub sections for an | |
613 | output section if the output section + stubs is small enough. | |
614 | This would fix the .init and .fini case and also allow stubs | |
615 | to be merged. It's more linker work though. */ | |
616 | if (strncmp (section->name, ".init", 5) == 0) | |
617 | { | |
618 | stub_sec = hplink->stub_section_created[hplink->first_init_sec]; | |
619 | special_sec = 1; | |
620 | } | |
621 | else if (strncmp (section->name, ".fini", 5) == 0) | |
622 | { | |
623 | stub_sec = hplink->stub_section_created[hplink->first_fini_sec]; | |
624 | special_sec = 2; | |
625 | } | |
626 | if (stub_sec == NULL) | |
627 | { | |
628 | int len; | |
629 | char *s_name; | |
630 | ||
631 | len = strlen (section->name) + sizeof (STUB_SUFFIX); | |
632 | s_name = bfd_alloc (hplink->stub_bfd, len); | |
633 | if (s_name == NULL) | |
634 | return NULL; | |
635 | ||
636 | strcpy (s_name, section->name); | |
637 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); | |
638 | stub_sec = (*hplink->add_stub_section) (s_name, section); | |
639 | if (stub_sec == NULL) | |
640 | return NULL; | |
641 | ||
642 | if (special_sec != 0) | |
643 | { | |
644 | if (special_sec == 1) | |
645 | hplink->first_init_sec = sec_count; | |
646 | else | |
647 | hplink->first_fini_sec = sec_count; | |
648 | } | |
649 | } | |
650 | hplink->stub_section_created[sec_count] = stub_sec; | |
edd21aca | 651 | } |
252b5132 | 652 | |
30667bf3 AM |
653 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
654 | reloc_sec = hplink->reloc_section_created[sec_count]; | |
655 | if (reloc_sec == NULL && info->shared) | |
252b5132 | 656 | { |
30667bf3 AM |
657 | char *name; |
658 | ||
659 | name = bfd_malloc (sizeof ".rela" + strlen (stub_sec->name)); | |
660 | if (name == NULL) | |
661 | return NULL; | |
662 | strcpy (name, ".rela"); | |
663 | strcpy (name + sizeof ".rela" - 1, stub_sec->name); | |
664 | reloc_sec = bfd_get_section_by_name (elf_hash_table (info)->dynobj, | |
665 | name); | |
666 | hplink->reloc_section_created[sec_count] = reloc_sec; | |
667 | free (name); | |
668 | } | |
669 | #endif | |
edd21aca | 670 | |
30667bf3 AM |
671 | /* Enter this entry into the linker stub hash table. */ |
672 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name, | |
673 | true, false); | |
674 | if (stub_entry == NULL) | |
675 | { | |
676 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
677 | bfd_get_filename (section->owner), | |
678 | stub_name); | |
679 | return NULL; | |
edd21aca AM |
680 | } |
681 | ||
30667bf3 AM |
682 | stub_entry->stub_sec = stub_sec; |
683 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
684 | stub_entry->reloc_sec = reloc_sec; | |
685 | #endif | |
686 | stub_entry->stub_offset = 0; | |
687 | stub_entry->input_section = section; | |
688 | return stub_entry; | |
edd21aca AM |
689 | } |
690 | ||
edd21aca | 691 | |
30667bf3 AM |
692 | /* Determine the type of stub needed, if any, for a call. */ |
693 | ||
694 | static enum elf32_hppa_stub_type | |
695 | hppa_type_of_stub (input_sec, rel, hash, destination) | |
696 | asection *input_sec; | |
697 | const Elf_Internal_Rela *rel; | |
698 | struct elf32_hppa_link_hash_entry *hash; | |
699 | bfd_vma destination; | |
edd21aca | 700 | { |
edd21aca | 701 | bfd_vma location; |
30667bf3 AM |
702 | bfd_vma branch_offset; |
703 | bfd_vma max_branch_offset; | |
704 | unsigned int r_type; | |
705 | ||
706 | if (hash != NULL | |
707 | && (((hash->elf.root.type == bfd_link_hash_defined | |
708 | || hash->elf.root.type == bfd_link_hash_defweak) | |
709 | && hash->elf.root.u.def.section->output_section == NULL) | |
710 | || hash->elf.root.type == bfd_link_hash_undefweak | |
711 | || hash->elf.root.type == bfd_link_hash_undefined | |
712 | || hash->pic_call)) | |
713 | { | |
714 | /* If output_section is NULL, then it's a symbol defined in a | |
715 | shared library. We will need an import stub. Decide between | |
716 | hppa_stub_import and hppa_stub_import_shared later. | |
717 | For shared links we need stubs for undefined syms too; They | |
718 | will presumably be resolved by the dynamic linker. */ | |
719 | return hppa_stub_import; | |
720 | } | |
edd21aca | 721 | |
30667bf3 AM |
722 | /* Determine where the call point is. */ |
723 | location = (input_sec->output_offset | |
724 | + input_sec->output_section->vma | |
725 | + rel->r_offset); | |
edd21aca | 726 | |
30667bf3 AM |
727 | branch_offset = destination - location - 8; |
728 | r_type = ELF32_R_TYPE (rel->r_info); | |
edd21aca | 729 | |
30667bf3 AM |
730 | /* Determine if a long branch stub is needed. parisc branch offsets |
731 | are relative to the second instruction past the branch, ie. +8 | |
732 | bytes on from the branch instruction location. The offset is | |
733 | signed and counts in units of 4 bytes. */ | |
734 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
edd21aca | 735 | { |
30667bf3 AM |
736 | max_branch_offset = (1 << (17-1)) << 2; |
737 | } | |
738 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
739 | { | |
740 | max_branch_offset = (1 << (12-1)) << 2; | |
741 | } | |
742 | else /* R_PARISC_PCREL22F */ | |
743 | { | |
744 | max_branch_offset = (1 << (22-1)) << 2; | |
edd21aca AM |
745 | } |
746 | ||
30667bf3 | 747 | if (branch_offset + max_branch_offset >= 2*max_branch_offset) |
edd21aca | 748 | { |
30667bf3 AM |
749 | #if 0 |
750 | if (hash != NULL | |
751 | && hash->elf.dynindx != -1 | |
752 | && hash->elf.plt.offset != (bfd_vma) -1) | |
753 | { | |
754 | /* If we are doing a shared link and find we need a long | |
755 | branch stub, then go via the .plt if possible. */ | |
756 | return hppa_stub_import; | |
757 | } | |
758 | else | |
759 | #endif | |
760 | return hppa_stub_long_branch; | |
761 | } | |
762 | return hppa_stub_none; | |
763 | } | |
edd21aca | 764 | |
edd21aca | 765 | |
30667bf3 AM |
766 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
767 | IN_ARG contains the link info pointer. */ | |
edd21aca | 768 | |
30667bf3 AM |
769 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ |
770 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ | |
edd21aca | 771 | |
30667bf3 AM |
772 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */ |
773 | #define ADDIL_R1 0x28200000 /* addil L'XXX,%r1,%r1 */ | |
774 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ | |
252b5132 | 775 | |
30667bf3 AM |
776 | #define ADDIL_DP 0x2b600000 /* addil L'XXX,%dp,%r1 */ |
777 | #define LDW_R1_R21 0x48350000 /* ldw R'XXX(%sr0,%r1),%r21 */ | |
778 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ | |
779 | #define LDW_R1_R19 0x48330000 /* ldw R'XXX(%sr0,%r1),%r19 */ | |
252b5132 | 780 | |
30667bf3 AM |
781 | #define ADDIL_R19 0x2a600000 /* addil L'XXX,%r19,%r1 */ |
782 | #define LDW_R1_DP 0x483b0000 /* ldw R'XXX(%sr0,%r1),%dp */ | |
edd21aca | 783 | |
30667bf3 AM |
784 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ |
785 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ | |
786 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ | |
787 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ | |
edd21aca | 788 | |
30667bf3 AM |
789 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ |
790 | #define NOP 0x08000240 /* nop */ | |
791 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ | |
792 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ | |
793 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ | |
edd21aca | 794 | |
30667bf3 AM |
795 | #ifndef R19_STUBS |
796 | #define R19_STUBS 1 | |
797 | #endif | |
edd21aca | 798 | |
30667bf3 AM |
799 | #if R19_STUBS |
800 | #define LDW_R1_DLT LDW_R1_R19 | |
801 | #else | |
802 | #define LDW_R1_DLT LDW_R1_DP | |
803 | #endif | |
edd21aca | 804 | |
30667bf3 AM |
805 | static boolean |
806 | hppa_build_one_stub (gen_entry, in_arg) | |
807 | struct bfd_hash_entry *gen_entry; | |
808 | PTR in_arg; | |
809 | { | |
810 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
811 | struct bfd_link_info *info; | |
812 | struct elf32_hppa_link_hash_table *hplink; | |
813 | asection *stub_sec; | |
814 | bfd *stub_bfd; | |
815 | bfd_byte *loc; | |
816 | bfd_vma sym_value; | |
817 | unsigned int insn; | |
818 | int size; | |
edd21aca | 819 | |
30667bf3 AM |
820 | /* Massage our args to the form they really have. */ |
821 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
822 | info = (struct bfd_link_info *) in_arg; | |
823 | ||
824 | hplink = hppa_link_hash_table (info); | |
825 | stub_sec = stub_entry->stub_sec; | |
edd21aca | 826 | |
30667bf3 AM |
827 | /* Make a note of the offset within the stubs for this entry. */ |
828 | stub_entry->stub_offset = hplink->offset[stub_sec->index]; | |
829 | loc = stub_sec->contents + stub_entry->stub_offset; | |
252b5132 | 830 | |
30667bf3 AM |
831 | stub_bfd = stub_sec->owner; |
832 | ||
833 | switch (stub_entry->stub_type) | |
834 | { | |
835 | case hppa_stub_long_branch: | |
836 | /* Create the long branch. A long branch is formed with "ldil" | |
837 | loading the upper bits of the target address into a register, | |
838 | then branching with "be" which adds in the lower bits. | |
839 | The "be" has its delay slot nullified. */ | |
840 | sym_value = (stub_entry->target_value | |
841 | + stub_entry->target_section->output_offset | |
842 | + stub_entry->target_section->output_section->vma); | |
843 | ||
844 | insn = hppa_rebuild_insn ((int) LDIL_R1, | |
845 | hppa_field_adjust (sym_value, 0, e_lrsel), | |
846 | 21); | |
847 | bfd_put_32 (stub_bfd, insn, loc); | |
848 | ||
849 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, | |
850 | hppa_field_adjust (sym_value, 0, e_rrsel) >> 2, | |
851 | 17); | |
852 | bfd_put_32 (stub_bfd, insn, loc + 4); | |
853 | ||
854 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
855 | if (info->shared) | |
856 | { | |
857 | /* Output a dynamic relocation for this stub. We only | |
858 | output one PCREL21L reloc per stub, trusting that the | |
859 | dynamic linker will also fix the implied PCREL17R for the | |
860 | second instruction. PCREL21L dynamic relocs had better | |
861 | never be emitted for some other purpose... */ | |
862 | asection *srel; | |
863 | Elf_Internal_Rela outrel; | |
864 | ||
865 | if (stub_entry->h == NULL) | |
edd21aca AM |
866 | { |
867 | (*_bfd_error_handler) | |
30667bf3 AM |
868 | (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"), |
869 | bfd_get_filename (stub_entry->target_section->owner), | |
870 | stub_sec->name, | |
871 | (long) stub_entry->stub_offset, | |
872 | stub_entry->root.string); | |
873 | bfd_set_error (bfd_error_bad_value); | |
874 | return false; | |
edd21aca AM |
875 | } |
876 | ||
30667bf3 AM |
877 | srel = stub_entry->reloc_sec; |
878 | if (srel == NULL) | |
edd21aca AM |
879 | { |
880 | (*_bfd_error_handler) | |
30667bf3 AM |
881 | (_("Could not find relocation section for %s"), |
882 | stub_sec->name); | |
883 | bfd_set_error (bfd_error_bad_value); | |
884 | return false; | |
edd21aca | 885 | } |
252b5132 | 886 | |
30667bf3 AM |
887 | outrel.r_offset = (stub_entry->stub_offset |
888 | + stub_sec->output_offset | |
889 | + stub_sec->output_section->vma); | |
890 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L); | |
891 | outrel.r_addend = sym_value; | |
892 | bfd_elf32_swap_reloca_out (stub_sec->output_section->owner, | |
893 | &outrel, | |
894 | ((Elf32_External_Rela *) | |
895 | srel->contents + srel->reloc_count)); | |
896 | ++srel->reloc_count; | |
252b5132 | 897 | } |
30667bf3 AM |
898 | #endif |
899 | size = 8; | |
edd21aca AM |
900 | break; |
901 | ||
30667bf3 AM |
902 | case hppa_stub_long_branch_shared: |
903 | /* Branches are relative. This is where we are going to. */ | |
904 | sym_value = (stub_entry->target_value | |
905 | + stub_entry->target_section->output_offset | |
906 | + stub_entry->target_section->output_section->vma); | |
907 | ||
908 | /* And this is where we are coming from, more or less. */ | |
909 | sym_value -= (stub_entry->stub_offset | |
910 | + stub_sec->output_offset | |
911 | + stub_sec->output_section->vma); | |
912 | ||
913 | bfd_put_32 (stub_bfd, (unsigned int) BL_R1, loc); | |
914 | insn = hppa_rebuild_insn ((int) ADDIL_R1, | |
915 | hppa_field_adjust (sym_value, -8, e_lsel), | |
916 | 21); | |
917 | bfd_put_32 (stub_bfd, insn, loc + 4); | |
918 | ||
919 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, | |
920 | hppa_field_adjust (sym_value, -8, e_rsel) >> 2, | |
921 | 17); | |
922 | bfd_put_32 (stub_bfd, insn, loc + 8); | |
923 | size = 12; | |
924 | break; | |
edd21aca | 925 | |
30667bf3 AM |
926 | case hppa_stub_import: |
927 | case hppa_stub_import_shared: | |
928 | sym_value = (stub_entry->h->elf.plt.offset | |
929 | + hplink->splt->output_offset | |
930 | + hplink->splt->output_section->vma | |
931 | - elf_gp (hplink->splt->output_section->owner)); | |
932 | ||
933 | insn = ADDIL_DP; | |
934 | #if R19_STUBS | |
935 | if (stub_entry->stub_type == hppa_stub_import_shared) | |
936 | insn = ADDIL_R19; | |
937 | #endif | |
938 | insn = hppa_rebuild_insn ((int) insn, | |
939 | hppa_field_adjust (sym_value, 0, e_lsel), | |
940 | 21); | |
941 | bfd_put_32 (stub_bfd, insn, loc); | |
edd21aca | 942 | |
30667bf3 AM |
943 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, |
944 | hppa_field_adjust (sym_value, 0, e_rsel), | |
945 | 14); | |
946 | bfd_put_32 (stub_bfd, insn, loc + 4); | |
252b5132 | 947 | |
30667bf3 AM |
948 | if (hplink->multi_subspace) |
949 | { | |
950 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, | |
951 | hppa_field_adjust (sym_value, 4, e_rsel), | |
952 | 14); | |
953 | bfd_put_32 (stub_bfd, insn, loc + 8); | |
252b5132 | 954 | |
30667bf3 AM |
955 | bfd_put_32 (stub_bfd, (unsigned int) LDSID_R21_R1, loc + 12); |
956 | bfd_put_32 (stub_bfd, (unsigned int) MTSP_R1, loc + 16); | |
957 | bfd_put_32 (stub_bfd, (unsigned int) BE_SR0_R21, loc + 20); | |
958 | bfd_put_32 (stub_bfd, (unsigned int) STW_RP, loc + 24); | |
252b5132 | 959 | |
30667bf3 AM |
960 | size = 28; |
961 | } | |
962 | else | |
963 | { | |
964 | bfd_put_32 (stub_bfd, (unsigned int) BV_R0_R21, loc + 8); | |
965 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, | |
966 | hppa_field_adjust (sym_value, 4, e_rsel), | |
967 | 14); | |
968 | bfd_put_32 (stub_bfd, insn, loc + 12); | |
252b5132 | 969 | |
30667bf3 AM |
970 | size = 16; |
971 | } | |
252b5132 | 972 | |
30667bf3 AM |
973 | if (!info->shared |
974 | && stub_entry->h != NULL | |
975 | && stub_entry->h->pic_call) | |
252b5132 | 976 | { |
30667bf3 AM |
977 | /* Build the .plt entry needed to call a PIC function from |
978 | statically linked code. We don't need any relocs. */ | |
979 | bfd *dynobj; | |
980 | struct elf32_hppa_link_hash_entry *eh; | |
981 | bfd_vma value; | |
252b5132 | 982 | |
30667bf3 AM |
983 | dynobj = elf_hash_table (info)->dynobj; |
984 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; | |
252b5132 | 985 | |
30667bf3 AM |
986 | BFD_ASSERT (eh->elf.root.type == bfd_link_hash_defined |
987 | || eh->elf.root.type == bfd_link_hash_defweak); | |
252b5132 | 988 | |
30667bf3 AM |
989 | value = (eh->elf.root.u.def.value |
990 | + eh->elf.root.u.def.section->output_offset | |
991 | + eh->elf.root.u.def.section->output_section->vma); | |
252b5132 | 992 | |
30667bf3 | 993 | /* Fill in the entry in the procedure linkage table. |
252b5132 | 994 | |
30667bf3 AM |
995 | The format of a plt entry is |
996 | <funcaddr> <__gp>. */ | |
252b5132 | 997 | |
30667bf3 AM |
998 | bfd_put_32 (hplink->splt->owner, value, |
999 | hplink->splt->contents + eh->elf.plt.offset); | |
1000 | value = elf_gp (hplink->splt->output_section->owner); | |
1001 | bfd_put_32 (hplink->splt->owner, value, | |
1002 | hplink->splt->contents + eh->elf.plt.offset + 4); | |
252b5132 | 1003 | } |
30667bf3 | 1004 | break; |
252b5132 | 1005 | |
30667bf3 AM |
1006 | case hppa_stub_export: |
1007 | /* Branches are relative. This is where we are going to. */ | |
1008 | sym_value = (stub_entry->target_value | |
1009 | + stub_entry->target_section->output_offset | |
1010 | + stub_entry->target_section->output_section->vma); | |
252b5132 | 1011 | |
30667bf3 AM |
1012 | /* And this is where we are coming from. */ |
1013 | sym_value -= (stub_entry->stub_offset | |
1014 | + stub_sec->output_offset | |
1015 | + stub_sec->output_section->vma); | |
edd21aca | 1016 | |
30667bf3 AM |
1017 | if (sym_value - 8 + 0x40000 >= 0x80000) |
1018 | { | |
edd21aca | 1019 | (*_bfd_error_handler) |
30667bf3 AM |
1020 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), |
1021 | bfd_get_filename (stub_entry->target_section->owner), | |
1022 | stub_sec->name, | |
1023 | (long) stub_entry->stub_offset, | |
1024 | stub_entry->root.string); | |
1025 | bfd_set_error (bfd_error_bad_value); | |
edd21aca | 1026 | return false; |
252b5132 | 1027 | } |
30667bf3 AM |
1028 | |
1029 | insn = hppa_rebuild_insn ((int) BL_RP, | |
1030 | hppa_field_adjust (sym_value, -8, e_fsel) >> 2, | |
1031 | 17); | |
1032 | bfd_put_32 (stub_bfd, insn, loc); | |
1033 | ||
1034 | bfd_put_32 (stub_bfd, (unsigned int) NOP, loc + 4); | |
1035 | bfd_put_32 (stub_bfd, (unsigned int) LDW_RP, loc + 8); | |
1036 | bfd_put_32 (stub_bfd, (unsigned int) LDSID_RP_R1, loc + 12); | |
1037 | bfd_put_32 (stub_bfd, (unsigned int) MTSP_R1, loc + 16); | |
1038 | bfd_put_32 (stub_bfd, (unsigned int) BE_SR0_RP, loc + 20); | |
1039 | ||
1040 | /* Point the function symbol at the stub. */ | |
1041 | stub_entry->h->elf.root.u.def.section = stub_sec; | |
1042 | stub_entry->h->elf.root.u.def.value = hplink->offset[stub_sec->index]; | |
1043 | ||
1044 | size = 24; | |
1045 | break; | |
1046 | ||
1047 | default: | |
1048 | BFD_FAIL (); | |
1049 | return false; | |
252b5132 RH |
1050 | } |
1051 | ||
30667bf3 | 1052 | hplink->offset[stub_sec->index] += size; |
252b5132 RH |
1053 | return true; |
1054 | } | |
1055 | ||
30667bf3 AM |
1056 | #undef LDIL_R1 |
1057 | #undef BE_SR4_R1 | |
1058 | #undef BL_R1 | |
1059 | #undef ADDIL_R1 | |
1060 | #undef DEPI_R1 | |
1061 | #undef ADDIL_DP | |
1062 | #undef LDW_R1_R21 | |
1063 | #undef LDW_R1_DLT | |
1064 | #undef LDW_R1_R19 | |
1065 | #undef ADDIL_R19 | |
1066 | #undef LDW_R1_DP | |
1067 | #undef LDSID_R21_R1 | |
1068 | #undef MTSP_R1 | |
1069 | #undef BE_SR0_R21 | |
1070 | #undef STW_RP | |
1071 | #undef BV_R0_R21 | |
1072 | #undef BL_RP | |
1073 | #undef NOP | |
1074 | #undef LDW_RP | |
1075 | #undef LDSID_RP_R1 | |
1076 | #undef BE_SR0_RP | |
252b5132 | 1077 | |
edd21aca | 1078 | |
30667bf3 AM |
1079 | /* As above, but don't actually build the stub. Just bump offset so |
1080 | we know stub section sizes. */ | |
1081 | ||
1082 | static boolean | |
1083 | hppa_size_one_stub (gen_entry, in_arg) | |
1084 | struct bfd_hash_entry *gen_entry; | |
1085 | PTR in_arg; | |
252b5132 | 1086 | { |
30667bf3 AM |
1087 | struct elf32_hppa_stub_hash_entry *stub_entry; |
1088 | struct elf32_hppa_link_hash_table *hplink; | |
1089 | int size; | |
1090 | ||
1091 | /* Massage our args to the form they really have. */ | |
1092 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
1093 | hplink = (struct elf32_hppa_link_hash_table *) in_arg; | |
1094 | ||
1095 | if (stub_entry->stub_type == hppa_stub_long_branch) | |
1096 | size = 8; | |
1097 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared) | |
1098 | size = 12; | |
1099 | else if (stub_entry->stub_type == hppa_stub_export) | |
1100 | size = 24; | |
1101 | else /* hppa_stub_import or hppa_stub_import_shared */ | |
252b5132 | 1102 | { |
30667bf3 AM |
1103 | if (hplink->multi_subspace) |
1104 | size = 28; | |
1105 | else | |
1106 | size = 16; | |
1107 | } | |
252b5132 | 1108 | |
30667bf3 AM |
1109 | hplink->offset[stub_entry->stub_sec->index] += size; |
1110 | return true; | |
1111 | } | |
252b5132 | 1112 | |
252b5132 | 1113 | |
30667bf3 AM |
1114 | /* Return nonzero if ABFD represents an HPPA ELF32 file. |
1115 | Additionally we set the default architecture and machine. */ | |
1116 | ||
1117 | static boolean | |
1118 | elf32_hppa_object_p (abfd) | |
1119 | bfd *abfd; | |
1120 | { | |
1121 | unsigned int flags = elf_elfheader (abfd)->e_flags; | |
252b5132 | 1122 | |
30667bf3 AM |
1123 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
1124 | { | |
1125 | case EFA_PARISC_1_0: | |
1126 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
1127 | case EFA_PARISC_1_1: | |
1128 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
1129 | case EFA_PARISC_2_0: | |
1130 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
1131 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
1132 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
1133 | } | |
1134 | return true; | |
252b5132 RH |
1135 | } |
1136 | ||
30667bf3 | 1137 | |
252b5132 RH |
1138 | /* Undo the generic ELF code's subtraction of section->vma from the |
1139 | value of each external symbol. */ | |
1140 | ||
1141 | static boolean | |
1142 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
5f771d47 ILT |
1143 | bfd *abfd ATTRIBUTE_UNUSED; |
1144 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1145 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; | |
1146 | const char **namep ATTRIBUTE_UNUSED; | |
1147 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1148 | asection **secp; |
1149 | bfd_vma *valp; | |
1150 | { | |
1151 | *valp += (*secp)->vma; | |
1152 | return true; | |
1153 | } | |
1154 | ||
252b5132 | 1155 | |
30667bf3 AM |
1156 | /* Create the .plt and .got sections, and set up our hash table |
1157 | short-cuts to various dynamic sections. */ | |
1158 | ||
1159 | static boolean | |
1160 | elf32_hppa_create_dynamic_sections (abfd, info) | |
1161 | bfd *abfd; | |
1162 | struct bfd_link_info *info; | |
252b5132 | 1163 | { |
30667bf3 AM |
1164 | flagword flags; |
1165 | asection *s; | |
1166 | struct elf32_hppa_link_hash_table *hplink; | |
edd21aca | 1167 | |
30667bf3 AM |
1168 | /* Don't try to create the .plt and .got twice. */ |
1169 | hplink = hppa_link_hash_table (info); | |
1170 | if (hplink->splt != NULL) | |
1171 | return true; | |
edd21aca | 1172 | |
30667bf3 AM |
1173 | /* Call the generic code to do most of the work. */ |
1174 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1175 | return false; | |
252b5132 | 1176 | |
30667bf3 AM |
1177 | /* Our .plt just contains pointers. I suppose we should be using |
1178 | .plt.got but .plt.got doesn't make too much sense without a .plt | |
1179 | section. Set the flags to say the .plt isn't executable. */ | |
1180 | s = bfd_get_section_by_name (abfd, ".plt"); | |
1181 | flags = bfd_get_section_flags (abfd, s); | |
1182 | if (! bfd_set_section_flags (abfd, s, flags & ~SEC_CODE)) | |
1183 | return false; | |
1184 | hplink->splt = s; | |
1185 | hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
1186 | ||
1187 | hplink->sgot = bfd_get_section_by_name (abfd, ".got"); | |
1188 | hplink->srelgot = bfd_make_section (abfd, ".rela.got"); | |
1189 | if (hplink->srelgot == NULL | |
1190 | || ! bfd_set_section_flags (abfd, hplink->srelgot, | |
1191 | (SEC_ALLOC | |
1192 | | SEC_LOAD | |
1193 | | SEC_HAS_CONTENTS | |
1194 | | SEC_IN_MEMORY | |
1195 | | SEC_LINKER_CREATED | |
1196 | | SEC_READONLY)) | |
1197 | || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2)) | |
1198 | return false; | |
edd21aca | 1199 | |
30667bf3 AM |
1200 | hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
1201 | hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
1202 | ||
1203 | return true; | |
1204 | } | |
1205 | ||
1206 | ||
1207 | /* Look through the relocs for a section during the first phase, and | |
1208 | allocate space in the global offset table or procedure linkage | |
1209 | table. At this point we haven't necessarily read all the input | |
1210 | files. */ | |
252b5132 RH |
1211 | |
1212 | static boolean | |
30667bf3 AM |
1213 | elf32_hppa_check_relocs (abfd, info, sec, relocs) |
1214 | bfd *abfd; | |
1215 | struct bfd_link_info *info; | |
1216 | asection *sec; | |
1217 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1218 | { |
30667bf3 AM |
1219 | bfd *dynobj; |
1220 | Elf_Internal_Shdr *symtab_hdr; | |
1221 | struct elf_link_hash_entry **sym_hashes; | |
1222 | bfd_signed_vma *local_got_refcounts; | |
1223 | const Elf_Internal_Rela *rel; | |
1224 | const Elf_Internal_Rela *rel_end; | |
1225 | struct elf32_hppa_link_hash_table *hplink; | |
1226 | asection *sreloc; | |
1227 | asection *stubreloc; | |
1228 | ||
1229 | if (info->relocateable) | |
1230 | return true; | |
1231 | ||
1232 | hplink = hppa_link_hash_table (info); | |
1233 | dynobj = elf_hash_table (info)->dynobj; | |
1234 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1235 | sym_hashes = elf_sym_hashes (abfd); | |
1236 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1237 | sreloc = NULL; | |
1238 | stubreloc = NULL; | |
1239 | ||
1240 | rel_end = relocs + sec->reloc_count; | |
1241 | for (rel = relocs; rel < rel_end; rel++) | |
1242 | { | |
1243 | enum { | |
1244 | NEED_GOT = 1, | |
1245 | NEED_PLT = 2, | |
1246 | NEED_DYNREL = 4, | |
1247 | #if LONG_BRANCH_PIC_IN_SHLIB | |
1248 | NEED_STUBREL = 0 /* We won't be needing them in this case. */ | |
1249 | #else | |
1250 | NEED_STUBREL = 8 | |
1251 | #endif | |
1252 | }; | |
edd21aca | 1253 | |
30667bf3 AM |
1254 | unsigned int r_symndx, r_type; |
1255 | struct elf32_hppa_link_hash_entry *h; | |
1256 | int need_entry; | |
252b5132 | 1257 | |
30667bf3 | 1258 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 | 1259 | |
30667bf3 AM |
1260 | if (r_symndx < symtab_hdr->sh_info) |
1261 | h = NULL; | |
1262 | else | |
1263 | h = ((struct elf32_hppa_link_hash_entry *) | |
1264 | sym_hashes[r_symndx - symtab_hdr->sh_info]); | |
252b5132 | 1265 | |
30667bf3 | 1266 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1267 | |
30667bf3 AM |
1268 | switch (r_type) |
1269 | { | |
1270 | case R_PARISC_DLTIND14F: | |
1271 | case R_PARISC_DLTIND14R: | |
1272 | case R_PARISC_DLTIND21L: | |
1273 | /* This symbol requires a global offset table entry. */ | |
1274 | need_entry = NEED_GOT; | |
1275 | ||
1276 | /* Mark this section as containing PIC code. */ | |
1277 | sec->flags |= SEC_HAS_GOT_REF; | |
1278 | break; | |
1279 | ||
1280 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ | |
1281 | case R_PARISC_PLABEL21L: | |
1282 | case R_PARISC_PLABEL32: | |
1283 | if (h == NULL) | |
1284 | { | |
1285 | /* If this is a local symbol we do not need to create a | |
1286 | PLT entry, but if we are creating a shared object we | |
1287 | have to output a relocation for the PLABEL itself. */ | |
1288 | need_entry = NEED_DYNREL; | |
1289 | } | |
1290 | else | |
1291 | { | |
1292 | /* If it is a global symbol, then we do need to create a | |
1293 | PLT entry, and additionally, if we are creating a | |
1294 | shared object, we need to output a dynamic relocation | |
1295 | pointing to that PLT entry. */ | |
1296 | need_entry = NEED_PLT | NEED_DYNREL; | |
1297 | } | |
1298 | break; | |
1299 | ||
1300 | case R_PARISC_PCREL12F: | |
1301 | case R_PARISC_PCREL17C: | |
1302 | case R_PARISC_PCREL17F: | |
1303 | case R_PARISC_PCREL22F: | |
1304 | /* Handle calls, and function pointers as they might need to | |
1305 | go through the .plt, and might require long branch stubs. */ | |
1306 | if (h == NULL) | |
1307 | { | |
1308 | /* We know local syms won't need a .plt entry, and if | |
1309 | they need a long branch stub we can't guarantee that | |
1310 | we can reach the stub. So just flag an error later | |
1311 | if we're doing a shared link and find we need a long | |
1312 | branch stub. */ | |
1313 | continue; | |
1314 | } | |
1315 | else | |
1316 | { | |
1317 | /* Global symbols will need a .plt entry if they remain | |
1318 | global, and in most cases won't need a long branch | |
1319 | stub. Unfortunately, we have to cater for the case | |
1320 | where a symbol is forced local by versioning, or due | |
1321 | to symbolic linking, and we lose the .plt entry. */ | |
1322 | need_entry = NEED_PLT | NEED_STUBREL; | |
1323 | } | |
1324 | break; | |
1325 | ||
1326 | case R_PARISC_SEGBASE: /* Used to set segment base. */ | |
1327 | case R_PARISC_SEGREL32: /* Relative reloc. */ | |
1328 | case R_PARISC_PCREL14F: /* PC relative load/store. */ | |
1329 | case R_PARISC_PCREL14R: | |
1330 | case R_PARISC_PCREL17R: /* External branches. */ | |
1331 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */ | |
1332 | /* We don't need to propagate the relocation if linking a | |
1333 | shared object since these are section relative. */ | |
1334 | continue; | |
1335 | ||
1336 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ | |
1337 | case R_PARISC_DPREL14R: | |
1338 | case R_PARISC_DPREL21L: | |
1339 | if (info->shared) | |
1340 | { | |
1341 | (*_bfd_error_handler) | |
1342 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
1343 | bfd_get_filename (abfd), | |
1344 | elf_hppa_howto_table[r_type].name); | |
1345 | bfd_set_error (bfd_error_bad_value); | |
1346 | return false; | |
1347 | } | |
1348 | /* Fall through. */ | |
1349 | ||
1350 | case R_PARISC_DIR17F: /* Used for external branches. */ | |
1351 | case R_PARISC_DIR17R: | |
1352 | case R_PARISC_DIR14R: /* Used for load/store from absolute locn. */ | |
1353 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */ | |
1354 | #if 1 | |
1355 | /* Help debug shared library creation. Any of the above | |
1356 | relocs can be used in shared libs, but they may cause | |
1357 | pages to become unshared. */ | |
1358 | if (info->shared) | |
1359 | { | |
1360 | (*_bfd_error_handler) | |
1361 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"), | |
1362 | bfd_get_filename (abfd), | |
1363 | elf_hppa_howto_table[r_type].name); | |
1364 | } | |
1365 | /* Fall through. */ | |
1366 | #endif | |
1367 | ||
1368 | case R_PARISC_DIR32: /* .word, PARISC.unwind relocs. */ | |
1369 | /* We may want to output a dynamic relocation later. */ | |
1370 | need_entry = NEED_DYNREL; | |
1371 | break; | |
1372 | ||
1373 | /* This relocation describes the C++ object vtable hierarchy. | |
1374 | Reconstruct it for later use during GC. */ | |
1375 | case R_PARISC_GNU_VTINHERIT: | |
1376 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, | |
1377 | &h->elf, rel->r_offset)) | |
1378 | return false; | |
1379 | continue; | |
1380 | ||
1381 | /* This relocation describes which C++ vtable entries are actually | |
1382 | used. Record for later use during GC. */ | |
1383 | case R_PARISC_GNU_VTENTRY: | |
1384 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, | |
1385 | &h->elf, rel->r_offset)) | |
1386 | return false; | |
1387 | continue; | |
1388 | ||
1389 | default: | |
1390 | continue; | |
1391 | } | |
1392 | ||
1393 | /* Now carry out our orders. */ | |
1394 | if (need_entry & NEED_GOT) | |
1395 | { | |
1396 | /* Allocate space for a GOT entry, as well as a dynamic | |
1397 | relocation for this entry. */ | |
1398 | if (dynobj == NULL) | |
1399 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1400 | ||
1401 | if (hplink->sgot == NULL) | |
1402 | { | |
1403 | if (! elf32_hppa_create_dynamic_sections (dynobj, info)) | |
1404 | return false; | |
1405 | } | |
1406 | ||
1407 | if (h != NULL) | |
1408 | { | |
1409 | if (h->elf.got.refcount == -1) | |
1410 | { | |
1411 | h->elf.got.refcount = 1; | |
1412 | ||
1413 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1414 | if (h->elf.dynindx == -1) | |
1415 | { | |
1416 | if (! bfd_elf32_link_record_dynamic_symbol (info, | |
1417 | &h->elf)) | |
1418 | return false; | |
1419 | } | |
1420 | ||
1421 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1422 | hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
1423 | } | |
1424 | else | |
1425 | h->elf.got.refcount += 1; | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | /* This is a global offset table entry for a local symbol. */ | |
1430 | if (local_got_refcounts == NULL) | |
1431 | { | |
1432 | size_t size; | |
1433 | ||
1434 | size = symtab_hdr->sh_info * sizeof (bfd_signed_vma); | |
1435 | local_got_refcounts = ((bfd_signed_vma *) | |
1436 | bfd_alloc (abfd, size)); | |
1437 | if (local_got_refcounts == NULL) | |
1438 | return false; | |
1439 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1440 | memset (local_got_refcounts, -1, size); | |
1441 | } | |
1442 | if (local_got_refcounts[r_symndx] == -1) | |
1443 | { | |
1444 | local_got_refcounts[r_symndx] = 1; | |
1445 | ||
1446 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1447 | if (info->shared) | |
1448 | { | |
1449 | /* If we are generating a shared object, we need to | |
1450 | output a reloc so that the dynamic linker can | |
1451 | adjust this GOT entry (because the address | |
1452 | the shared library is loaded at is not fixed). */ | |
1453 | hplink->srelgot->_raw_size += | |
1454 | sizeof (Elf32_External_Rela); | |
1455 | } | |
1456 | } | |
1457 | else | |
1458 | local_got_refcounts[r_symndx] += 1; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | if (need_entry & NEED_PLT) | |
1463 | { | |
1464 | /* If we are creating a shared library, and this is a reloc | |
1465 | against a weak symbol or a global symbol in a dynamic | |
1466 | object, then we will be creating an import stub and a | |
1467 | .plt entry for the symbol. Similarly, on a normal link | |
1468 | to symbols defined in a dynamic object we'll need the | |
1469 | import stub and a .plt entry. We don't know yet whether | |
1470 | the symbol is defined or not, so make an entry anyway and | |
1471 | clean up later in adjust_dynamic_symbol. */ | |
1472 | if ((sec->flags & SEC_ALLOC) != 0) | |
1473 | { | |
1474 | if (h->elf.plt.refcount == -1) | |
1475 | { | |
1476 | h->elf.plt.refcount = 1; | |
1477 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1478 | } | |
1479 | else | |
1480 | h->elf.plt.refcount += 1; | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | if (need_entry & (NEED_DYNREL | NEED_STUBREL)) | |
1485 | { | |
1486 | /* Flag this symbol as having a non-got, non-plt reference | |
1487 | so that we generate copy relocs if it turns out to be | |
1488 | dynamic. */ | |
1489 | if (h != NULL) | |
1490 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
1491 | ||
1492 | /* If we are creating a shared library then we need to copy | |
1493 | the reloc into the shared library. However, if we are | |
1494 | linking with -Bsymbolic, we need only copy absolute | |
1495 | relocs or relocs against symbols that are not defined in | |
1496 | an object we are including in the link. PC- or DP- or | |
1497 | DLT-relative relocs against any local sym or global sym | |
1498 | with DEF_REGULAR set, can be discarded. At this point we | |
1499 | have not seen all the input files, so it is possible that | |
1500 | DEF_REGULAR is not set now but will be set later (it is | |
1501 | never cleared). We account for that possibility below by | |
1502 | storing information in the reloc_entries field of the | |
1503 | hash table entry. | |
1504 | ||
1505 | A similar situation to the -Bsymbolic case occurs when | |
1506 | creating shared libraries and symbol visibility changes | |
1507 | render the symbol local. | |
1508 | ||
1509 | As it turns out, all the relocs we will be creating here | |
1510 | are absolute, so we cannot remove them on -Bsymbolic | |
1511 | links or visibility changes anyway. A STUB_REL reloc | |
1512 | is absolute too, as in that case it is the reloc in the | |
1513 | stub we will be creating, rather than copying the PCREL | |
1514 | reloc in the branch. */ | |
1515 | if ((sec->flags & SEC_ALLOC) != 0 | |
1516 | && info->shared | |
1517 | #if RELATIVE_DYNAMIC_RELOCS | |
1518 | && (!info->symbolic | |
1519 | || is_absolute_reloc (r_type) | |
1520 | || (h != NULL | |
1521 | && ((h->elf.elf_link_hash_flags | |
1522 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
1523 | || h->elf.root.type == bfd_link_hash_defweak))) | |
1524 | #endif | |
1525 | ) | |
1526 | { | |
1527 | boolean doit; | |
1528 | asection *srel; | |
1529 | ||
1530 | srel = sreloc; | |
1531 | if ((need_entry & NEED_STUBREL)) | |
1532 | srel = stubreloc; | |
1533 | ||
1534 | /* Create a reloc section in dynobj and make room for | |
1535 | this reloc. */ | |
1536 | if (srel == NULL) | |
1537 | { | |
1538 | char *name; | |
1539 | ||
1540 | if (dynobj == NULL) | |
1541 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1542 | ||
1543 | name = bfd_elf_string_from_elf_section | |
1544 | (abfd, | |
1545 | elf_elfheader (abfd)->e_shstrndx, | |
1546 | elf_section_data (sec)->rel_hdr.sh_name); | |
1547 | if (name == NULL) | |
1548 | { | |
1549 | (*_bfd_error_handler) | |
1550 | (_("Could not find relocation section for %s"), | |
1551 | sec->name); | |
1552 | bfd_set_error (bfd_error_bad_value); | |
1553 | return false; | |
1554 | } | |
1555 | ||
1556 | if ((need_entry & NEED_STUBREL)) | |
1557 | { | |
1558 | int len = strlen (name) + sizeof (STUB_SUFFIX); | |
1559 | char *newname = bfd_malloc (len); | |
1560 | ||
1561 | if (newname == NULL) | |
1562 | return false; | |
1563 | strcpy (newname, name); | |
1564 | strcpy (newname + len - sizeof (STUB_SUFFIX), | |
1565 | STUB_SUFFIX); | |
1566 | name = newname; | |
1567 | } | |
1568 | ||
1569 | srel = bfd_get_section_by_name (dynobj, name); | |
1570 | if (srel == NULL) | |
1571 | { | |
1572 | flagword flags; | |
1573 | ||
1574 | srel = bfd_make_section (dynobj, name); | |
1575 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1576 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1577 | if ((sec->flags & SEC_ALLOC) != 0) | |
1578 | flags |= SEC_ALLOC | SEC_LOAD; | |
1579 | if (srel == NULL | |
1580 | || !bfd_set_section_flags (dynobj, srel, flags) | |
1581 | || !bfd_set_section_alignment (dynobj, srel, 2)) | |
1582 | return false; | |
1583 | } | |
1584 | else if ((need_entry & NEED_STUBREL)) | |
1585 | free (name); | |
1586 | ||
1587 | if ((need_entry & NEED_STUBREL)) | |
1588 | stubreloc = srel; | |
1589 | else | |
1590 | sreloc = srel; | |
1591 | } | |
1592 | ||
1593 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1594 | /* If this is a function call, we only need one dynamic | |
1595 | reloc for the stub as all calls to a particular | |
1596 | function will go through the same stub. Actually, a | |
1597 | long branch stub needs two relocations, but we count | |
1598 | on some intelligence on the part of the dynamic | |
1599 | linker. */ | |
1600 | if ((need_entry & NEED_STUBREL)) | |
1601 | { | |
1602 | doit = h->stub_reloc_sec != stubreloc; | |
1603 | h->stub_reloc_sec = stubreloc; | |
1604 | } | |
1605 | else | |
1606 | #endif | |
1607 | doit = 1; | |
1608 | ||
1609 | if (doit) | |
1610 | { | |
1611 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1612 | ||
1613 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
1614 | /* Keep track of relocations we have entered for | |
1615 | this global symbol, so that we can discard them | |
1616 | later if necessary. */ | |
1617 | if (h != NULL | |
1618 | && (0 | |
1619 | #if RELATIVE_DYNAMIC_RELOCS | |
1620 | || ! is_absolute_reloc (rtype) | |
1621 | #endif | |
1622 | || (need_entry & NEED_STUBREL))) | |
1623 | { | |
1624 | struct elf32_hppa_dyn_reloc_entry *p; | |
252b5132 | 1625 | |
30667bf3 AM |
1626 | for (p = h->reloc_entries; p != NULL; p = p->next) |
1627 | if (p->section == srel) | |
1628 | break; | |
edd21aca | 1629 | |
30667bf3 AM |
1630 | if (p == NULL) |
1631 | { | |
1632 | p = ((struct elf32_hppa_dyn_reloc_entry *) | |
1633 | bfd_alloc (dynobj, sizeof *p)); | |
1634 | if (p == NULL) | |
1635 | return false; | |
1636 | p->next = h->reloc_entries; | |
1637 | h->reloc_entries = p; | |
1638 | p->section = srel; | |
1639 | p->count = 0; | |
1640 | } | |
edd21aca | 1641 | |
30667bf3 AM |
1642 | /* NEED_STUBREL and NEED_DYNREL are never both |
1643 | set. Leave the count at zero for the | |
1644 | NEED_STUBREL case as we only ever have one | |
1645 | stub reloc per section per symbol, and this | |
1646 | simplifies code in hppa_discard_copies. */ | |
1647 | if (! (need_entry & NEED_STUBREL)) | |
1648 | ++p->count; | |
1649 | } | |
1650 | #endif | |
1651 | } | |
1652 | } | |
1653 | } | |
1654 | } | |
edd21aca AM |
1655 | |
1656 | return true; | |
1657 | } | |
1658 | ||
30667bf3 AM |
1659 | |
1660 | /* Return the section that should be marked against garbage collection | |
1661 | for a given relocation. */ | |
1662 | ||
1663 | static asection * | |
1664 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) | |
1665 | bfd *abfd; | |
1666 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1667 | Elf_Internal_Rela *rel; | |
1668 | struct elf_link_hash_entry *h; | |
1669 | Elf_Internal_Sym *sym; | |
1670 | { | |
1671 | if (h != NULL) | |
1672 | { | |
1673 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1674 | { | |
1675 | case R_PARISC_GNU_VTINHERIT: | |
1676 | case R_PARISC_GNU_VTENTRY: | |
1677 | break; | |
1678 | ||
1679 | default: | |
1680 | switch (h->root.type) | |
1681 | { | |
1682 | case bfd_link_hash_defined: | |
1683 | case bfd_link_hash_defweak: | |
1684 | return h->root.u.def.section; | |
1685 | ||
1686 | case bfd_link_hash_common: | |
1687 | return h->root.u.c.p->section; | |
1688 | ||
1689 | default: | |
1690 | break; | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | else | |
1695 | { | |
1696 | if (!(elf_bad_symtab (abfd) | |
1697 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1698 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1699 | && sym->st_shndx != SHN_COMMON)) | |
1700 | { | |
1701 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | return NULL; | |
1706 | } | |
1707 | ||
1708 | ||
1709 | /* Update the got and plt entry reference counts for the section being | |
1710 | removed. */ | |
edd21aca AM |
1711 | |
1712 | static boolean | |
30667bf3 AM |
1713 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) |
1714 | bfd *abfd; | |
1715 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1716 | asection *sec; | |
1717 | const Elf_Internal_Rela *relocs; | |
edd21aca | 1718 | { |
30667bf3 AM |
1719 | Elf_Internal_Shdr *symtab_hdr; |
1720 | struct elf_link_hash_entry **sym_hashes; | |
1721 | bfd_signed_vma *local_got_refcounts; | |
1722 | const Elf_Internal_Rela *rel, *relend; | |
1723 | unsigned long r_symndx; | |
1724 | struct elf_link_hash_entry *h; | |
1725 | bfd *dynobj; | |
1726 | asection *sgot; | |
1727 | asection *srelgot; | |
1728 | ||
1729 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1730 | sym_hashes = elf_sym_hashes (abfd); | |
1731 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1732 | ||
1733 | dynobj = elf_hash_table (info)->dynobj; | |
1734 | if (dynobj == NULL) | |
1735 | return true; | |
1736 | ||
1737 | sgot = hppa_link_hash_table (info)->sgot; | |
1738 | srelgot = hppa_link_hash_table (info)->srelgot; | |
1739 | ||
1740 | relend = relocs + sec->reloc_count; | |
1741 | for (rel = relocs; rel < relend; rel++) | |
1742 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1743 | { | |
1744 | case R_PARISC_DLTIND14F: | |
1745 | case R_PARISC_DLTIND14R: | |
1746 | case R_PARISC_DLTIND21L: | |
1747 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1748 | if (r_symndx >= symtab_hdr->sh_info) | |
1749 | { | |
1750 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1751 | if (h->got.refcount > 0) | |
1752 | { | |
1753 | h->got.refcount -= 1; | |
1754 | if (h->got.refcount == 0) | |
1755 | { | |
1756 | sgot->_raw_size -= 4; | |
1757 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
1758 | } | |
1759 | } | |
1760 | } | |
1761 | else if (local_got_refcounts != NULL) | |
1762 | { | |
1763 | if (local_got_refcounts[r_symndx] > 0) | |
1764 | { | |
1765 | local_got_refcounts[r_symndx] -= 1; | |
1766 | if (local_got_refcounts[r_symndx] == 0) | |
1767 | { | |
1768 | sgot->_raw_size -= 4; | |
1769 | if (info->shared) | |
1770 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
1771 | } | |
1772 | } | |
1773 | } | |
1774 | break; | |
edd21aca | 1775 | |
30667bf3 AM |
1776 | case R_PARISC_PLABEL14R: |
1777 | case R_PARISC_PLABEL21L: | |
1778 | case R_PARISC_PLABEL32: | |
1779 | case R_PARISC_PCREL12F: | |
1780 | case R_PARISC_PCREL17C: | |
1781 | case R_PARISC_PCREL17F: | |
1782 | case R_PARISC_PCREL22F: | |
1783 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1784 | if (r_symndx >= symtab_hdr->sh_info) | |
1785 | { | |
1786 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1787 | if (h->plt.refcount > 0) | |
1788 | h->plt.refcount -= 1; | |
1789 | } | |
1790 | break; | |
edd21aca | 1791 | |
30667bf3 AM |
1792 | default: |
1793 | break; | |
1794 | } | |
252b5132 | 1795 | |
252b5132 RH |
1796 | return true; |
1797 | } | |
1798 | ||
252b5132 | 1799 | |
30667bf3 AM |
1800 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1801 | regular object. The current definition is in some section of the | |
1802 | dynamic object, but we're not including those sections. We have to | |
1803 | change the definition to something the rest of the link can | |
1804 | understand. */ | |
252b5132 | 1805 | |
30667bf3 AM |
1806 | static boolean |
1807 | elf32_hppa_adjust_dynamic_symbol (info, h) | |
1808 | struct bfd_link_info *info; | |
1809 | struct elf_link_hash_entry *h; | |
252b5132 | 1810 | { |
30667bf3 AM |
1811 | bfd *dynobj; |
1812 | struct elf32_hppa_link_hash_table *hplink; | |
1813 | asection *s; | |
1814 | ||
1815 | dynobj = elf_hash_table (info)->dynobj; | |
1816 | hplink = hppa_link_hash_table (info); | |
1817 | ||
1818 | /* If this is a function, put it in the procedure linkage table. We | |
1819 | will fill in the contents of the procedure linkage table later, | |
1820 | when we know the address of the .got section. */ | |
1821 | if (h->type == STT_FUNC | |
1822 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1823 | { | |
1824 | if (h->plt.refcount <= 0 | |
1825 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1826 | && h->root.type != bfd_link_hash_defweak | |
1827 | && (!info->shared || info->symbolic))) | |
1828 | { | |
1829 | /* The .plt entry is not needed when: | |
1830 | a) Garbage collection has removed all references to the | |
1831 | symbol, or | |
1832 | b) We know for certain the symbol is defined in this | |
1833 | object, and it's not a weak definition. Either this | |
1834 | object is the application or we are doing a shared | |
1835 | symbolic link. As a special sop to the hppa ABI, we | |
1836 | keep a .plt entry for functions in sections containing | |
1837 | PIC code. */ | |
1838 | if (!info->shared | |
1839 | && h->plt.refcount > 0 | |
1840 | && (h->root.type == bfd_link_hash_defined | |
1841 | || h->root.type == bfd_link_hash_defweak) | |
1842 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) | |
1843 | { | |
1844 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | h->plt.offset = (bfd_vma) -1; | |
1849 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1850 | return true; | |
1851 | } | |
1852 | } | |
1853 | ||
1854 | /* Make an entry in the .plt section. */ | |
1855 | s = hplink->splt; | |
1856 | h->plt.offset = s->_raw_size; | |
1857 | s->_raw_size += PLT_ENTRY_SIZE; | |
1858 | ||
1859 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
1860 | { | |
1861 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1862 | if (h->dynindx == -1) | |
1863 | { | |
1864 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1865 | return false; | |
1866 | } | |
1867 | ||
1868 | /* We also need to make an entry in the .rela.plt section. */ | |
1869 | s = hplink->srelplt; | |
1870 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1871 | } | |
1872 | return true; | |
1873 | } | |
edd21aca | 1874 | |
30667bf3 AM |
1875 | /* If this is a weak symbol, and there is a real definition, the |
1876 | processor independent code will have arranged for us to see the | |
1877 | real definition first, and we can just use the same value. */ | |
1878 | if (h->weakdef != NULL) | |
edd21aca | 1879 | { |
30667bf3 AM |
1880 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
1881 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1882 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1883 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1884 | return true; | |
1885 | } | |
edd21aca | 1886 | |
30667bf3 AM |
1887 | /* This is a reference to a symbol defined by a dynamic object which |
1888 | is not a function. */ | |
1889 | ||
1890 | /* If we are creating a shared library, we must presume that the | |
1891 | only references to the symbol are via the global offset table. | |
1892 | For such cases we need not do anything here; the relocations will | |
1893 | be handled correctly by relocate_section. */ | |
1894 | if (info->shared) | |
1895 | return true; | |
1896 | ||
1897 | /* If there are no references to this symbol that do not use the | |
1898 | GOT, we don't need to generate a copy reloc. */ | |
1899 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1900 | return true; | |
1901 | ||
1902 | /* We must allocate the symbol in our .dynbss section, which will | |
1903 | become part of the .bss section of the executable. There will be | |
1904 | an entry for this symbol in the .dynsym section. The dynamic | |
1905 | object will contain position independent code, so all references | |
1906 | from the dynamic object to this symbol will go through the global | |
1907 | offset table. The dynamic linker will use the .dynsym entry to | |
1908 | determine the address it must put in the global offset table, so | |
1909 | both the dynamic object and the regular object will refer to the | |
1910 | same memory location for the variable. */ | |
1911 | ||
1912 | s = hplink->sdynbss; | |
1913 | ||
1914 | /* We must generate a COPY reloc to tell the dynamic linker to | |
1915 | copy the initial value out of the dynamic object and into the | |
1916 | runtime process image. We need to remember the offset into the | |
1917 | .rela.bss section we are going to use. */ | |
1918 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1919 | { | |
1920 | asection *srel; | |
1921 | ||
1922 | srel = hplink->srelbss; | |
1923 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1924 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
edd21aca | 1925 | } |
252b5132 | 1926 | |
30667bf3 AM |
1927 | { |
1928 | /* We need to figure out the alignment required for this symbol. I | |
1929 | have no idea how other ELF linkers handle this. */ | |
1930 | unsigned int power_of_two; | |
1931 | ||
1932 | power_of_two = bfd_log2 (h->size); | |
1933 | if (power_of_two > 3) | |
1934 | power_of_two = 3; | |
1935 | ||
1936 | /* Apply the required alignment. */ | |
1937 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1938 | (bfd_size_type) (1 << power_of_two)); | |
1939 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
1940 | { | |
1941 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
1942 | return false; | |
1943 | } | |
1944 | } | |
1945 | /* Define the symbol as being at this point in the section. */ | |
1946 | h->root.u.def.section = s; | |
1947 | h->root.u.def.value = s->_raw_size; | |
edd21aca | 1948 | |
30667bf3 AM |
1949 | /* Increment the section size to make room for the symbol. */ |
1950 | s->_raw_size += h->size; | |
252b5132 RH |
1951 | |
1952 | return true; | |
1953 | } | |
1954 | ||
252b5132 | 1955 | |
30667bf3 AM |
1956 | /* Called via elf_link_hash_traverse to create .plt entries for an |
1957 | application that uses statically linked PIC functions. Similar to | |
1958 | the first part of elf32_hppa_adjust_dynamic_symbol. */ | |
252b5132 | 1959 | |
30667bf3 AM |
1960 | static boolean |
1961 | hppa_handle_PIC_calls (h, inf) | |
1962 | struct elf_link_hash_entry *h; | |
1963 | PTR inf; | |
252b5132 | 1964 | { |
30667bf3 AM |
1965 | struct bfd_link_info *info; |
1966 | bfd *dynobj; | |
1967 | struct elf32_hppa_link_hash_table *hplink; | |
1968 | asection *s; | |
1969 | ||
1970 | if (! (h->plt.refcount > 0 | |
1971 | && (h->root.type == bfd_link_hash_defined | |
1972 | || h->root.type == bfd_link_hash_defweak) | |
1973 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) | |
252b5132 | 1974 | { |
30667bf3 AM |
1975 | h->plt.offset = (bfd_vma) -1; |
1976 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1977 | return true; | |
252b5132 RH |
1978 | } |
1979 | ||
30667bf3 | 1980 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; |
edd21aca | 1981 | |
30667bf3 AM |
1982 | info = (struct bfd_link_info *) inf; |
1983 | dynobj = elf_hash_table (info)->dynobj; | |
1984 | hplink = hppa_link_hash_table (info); | |
edd21aca | 1985 | |
30667bf3 AM |
1986 | /* Make an entry in the .plt section. */ |
1987 | s = hplink->splt; | |
1988 | h->plt.offset = s->_raw_size; | |
1989 | s->_raw_size += PLT_ENTRY_SIZE; | |
1990 | ||
1991 | return true; | |
1992 | } | |
1993 | ||
1994 | ||
1995 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
1996 | /* This function is called via elf_link_hash_traverse to discard space | |
1997 | we allocated for relocs that it turned out we didn't need. */ | |
1998 | ||
1999 | static boolean | |
2000 | hppa_discard_copies (h, inf) | |
2001 | struct elf_link_hash_entry *h; | |
2002 | PTR inf; | |
2003 | { | |
2004 | struct elf32_hppa_dyn_reloc_entry *s; | |
2005 | struct elf32_hppa_link_hash_entry *eh; | |
2006 | struct bfd_link_info *info; | |
2007 | ||
2008 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
2009 | info = (struct bfd_link_info *) inf; | |
2010 | ||
2011 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2012 | /* Handle the stub reloc case. If we have a plt entry for the | |
2013 | function, we won't be needing long branch stubs. s->count will | |
2014 | only be zero for stub relocs, which provides a handy way of | |
2015 | flagging these relocs, and means we need do nothing special for | |
2016 | the forced local and symbolic link case. */ | |
2017 | if (eh->stub_reloc_sec != NULL | |
2018 | && eh->elf.plt.offset != (bfd_vma) -1) | |
2019 | { | |
2020 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2021 | if (s->count == 0) | |
2022 | s->section->_raw_size -= sizeof (Elf32_External_Rela); | |
2023 | } | |
2024 | #endif | |
2025 | ||
2026 | /* If a symbol has been forced local or we have found a regular | |
2027 | definition for the symbolic link case, then we won't be needing | |
2028 | any relocs. */ | |
2029 | #if RELATIVE_DYNAMIC_RELOCS | |
2030 | if (eh->elf.dynindx == -1 | |
2031 | || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
2032 | && eh->elf.root.type != bfd_link_hash_defweak | |
2033 | && info->symbolic)) | |
2034 | { | |
2035 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2036 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); | |
2037 | } | |
2038 | #endif | |
2039 | ||
2040 | return true; | |
2041 | } | |
2042 | #endif | |
2043 | ||
2044 | ||
2045 | /* Set the sizes of the dynamic sections. */ | |
2046 | ||
2047 | static boolean | |
2048 | elf32_hppa_size_dynamic_sections (output_bfd, info) | |
2049 | bfd *output_bfd; | |
2050 | struct bfd_link_info *info; | |
2051 | { | |
2052 | struct elf32_hppa_link_hash_table *hplink; | |
2053 | bfd *dynobj; | |
2054 | asection *s; | |
2055 | boolean relocs; | |
2056 | boolean reltext; | |
2057 | ||
2058 | hplink = hppa_link_hash_table (info); | |
2059 | dynobj = elf_hash_table (info)->dynobj; | |
2060 | BFD_ASSERT (dynobj != NULL); | |
2061 | ||
2062 | if (elf_hash_table (info)->dynamic_sections_created) | |
2063 | { | |
2064 | /* Set the contents of the .interp section to the interpreter. */ | |
2065 | if (! info->shared) | |
2066 | { | |
2067 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2068 | BFD_ASSERT (s != NULL); | |
2069 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2070 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2071 | } | |
2072 | } | |
2073 | else | |
2074 | { | |
2075 | /* Run through the function symbols, looking for any that are | |
2076 | PIC, and allocate space for the necessary .plt entries so | |
2077 | that %r19 will be set up. */ | |
2078 | if (! info->shared) | |
2079 | elf_link_hash_traverse (&hplink->root, | |
2080 | hppa_handle_PIC_calls, | |
2081 | info); | |
2082 | ||
2083 | /* We may have created entries in the .rela.got section. | |
2084 | However, if we are not creating the dynamic sections, we will | |
2085 | not actually use these entries. Reset the size of .rela.got, | |
2086 | which will cause it to get stripped from the output file | |
2087 | below. */ | |
2088 | hplink->srelgot->_raw_size = 0; | |
2089 | } | |
2090 | ||
2091 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
2092 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
2093 | relocs against symbols defined in a regular object. We also need | |
2094 | to lose relocs we've allocated for long branch stubs if we know | |
2095 | we won't be generating a stub. */ | |
2096 | if (info->shared) | |
2097 | elf_link_hash_traverse (&hplink->root, | |
2098 | hppa_discard_copies, | |
2099 | info); | |
2100 | #endif | |
2101 | ||
2102 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2103 | determined the sizes of the various dynamic sections. Allocate | |
2104 | memory for them. */ | |
2105 | relocs = false; | |
2106 | reltext = false; | |
2107 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2108 | { | |
2109 | const char *name; | |
2110 | ||
2111 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2112 | continue; | |
2113 | ||
2114 | /* It's OK to base decisions on the section name, because none | |
2115 | of the dynobj section names depend upon the input files. */ | |
2116 | name = bfd_get_section_name (dynobj, s); | |
2117 | ||
2118 | if (strncmp (name, ".rela", 5) == 0) | |
2119 | { | |
2120 | if (s->_raw_size != 0) | |
2121 | { | |
2122 | asection *target; | |
2123 | ||
2124 | /* Remember whether there are any reloc sections other | |
2125 | than .rela.plt. */ | |
2126 | if (strcmp (name+5, ".plt") != 0) | |
2127 | { | |
2128 | const char *outname; | |
2129 | ||
2130 | relocs = true; | |
2131 | ||
2132 | /* If this relocation section applies to a read only | |
2133 | section, then we probably need a DT_TEXTREL | |
2134 | entry. The entries in the .rela.plt section | |
2135 | really apply to the .got section, which we | |
2136 | created ourselves and so know is not readonly. */ | |
2137 | outname = bfd_get_section_name (output_bfd, | |
2138 | s->output_section); | |
2139 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2140 | if (target != NULL | |
2141 | && (target->flags & SEC_READONLY) != 0 | |
2142 | && (target->flags & SEC_ALLOC) != 0) | |
2143 | reltext = true; | |
2144 | } | |
2145 | ||
2146 | /* We use the reloc_count field as a counter if we need | |
2147 | to copy relocs into the output file. */ | |
2148 | s->reloc_count = 0; | |
2149 | } | |
2150 | } | |
2151 | else if (strcmp (name, ".plt") == 0) | |
2152 | ; | |
2153 | else if (strcmp (name, ".got") == 0) | |
2154 | ; | |
2155 | else | |
2156 | { | |
2157 | /* It's not one of our sections, so don't allocate space. */ | |
2158 | continue; | |
2159 | } | |
2160 | ||
2161 | if (s->_raw_size == 0) | |
2162 | { | |
2163 | /* If we don't need this section, strip it from the | |
2164 | output file. This is mostly to handle .rela.bss and | |
2165 | .rela.plt. We must create both sections in | |
2166 | create_dynamic_sections, because they must be created | |
2167 | before the linker maps input sections to output | |
2168 | sections. The linker does that before | |
2169 | adjust_dynamic_symbol is called, and it is that | |
2170 | function which decides whether anything needs to go | |
2171 | into these sections. */ | |
2172 | _bfd_strip_section_from_output (info, s); | |
2173 | continue; | |
2174 | } | |
2175 | ||
2176 | /* Allocate memory for the section contents. Zero it, because | |
2177 | we may not fill in all the reloc sections. */ | |
2178 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2179 | if (s->contents == NULL && s->_raw_size != 0) | |
2180 | return false; | |
2181 | } | |
2182 | ||
2183 | if (elf_hash_table (info)->dynamic_sections_created) | |
2184 | { | |
2185 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It | |
2186 | actually has nothing to do with the PLT, it is how we | |
2187 | communicate the LTP value of a load module to the dynamic | |
2188 | linker. */ | |
2189 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
2190 | return false; | |
2191 | ||
2192 | /* Add some entries to the .dynamic section. We fill in the | |
2193 | values later, in elf32_hppa_finish_dynamic_sections, but we | |
2194 | must add the entries now so that we get the correct size for | |
2195 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2196 | dynamic linker and used by the debugger. */ | |
2197 | if (! info->shared) | |
2198 | { | |
2199 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2200 | return false; | |
2201 | } | |
2202 | ||
2203 | if (hplink->srelplt->_raw_size != 0) | |
2204 | { | |
2205 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2206 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2207 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2208 | return false; | |
2209 | } | |
2210 | ||
2211 | if (relocs) | |
2212 | { | |
2213 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
2214 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
2215 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
2216 | sizeof (Elf32_External_Rela))) | |
2217 | return false; | |
2218 | } | |
2219 | ||
2220 | if (reltext) | |
2221 | { | |
2222 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2223 | return false; | |
2224 | info->flags |= DF_TEXTREL; | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | return true; | |
2229 | } | |
2230 | ||
2231 | ||
2232 | /* External entry points for sizing and building linker stubs. */ | |
2233 | ||
2234 | /* Determine and set the size of the stub section for a final link. | |
2235 | ||
2236 | The basic idea here is to examine all the relocations looking for | |
2237 | PC-relative calls to a target that is unreachable with a "bl" | |
2238 | instruction. */ | |
2239 | ||
2240 | boolean | |
2241 | elf32_hppa_size_stubs (stub_bfd, multi_subspace, info, | |
2242 | add_stub_section, layout_sections_again) | |
2243 | bfd *stub_bfd; | |
2244 | boolean multi_subspace; | |
2245 | struct bfd_link_info *info; | |
2246 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
2247 | void (*layout_sections_again) PARAMS ((void)); | |
2248 | { | |
2249 | bfd *input_bfd; | |
2250 | asection *section; | |
2251 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
2252 | unsigned int i, indx, bfd_count, sec_count; | |
2253 | struct elf32_hppa_link_hash_table *hplink; | |
2254 | boolean stub_changed = 0; | |
2255 | ||
2256 | hplink = hppa_link_hash_table (info); | |
2257 | ||
2258 | /* Stash our params away. */ | |
2259 | hplink->stub_bfd = stub_bfd; | |
2260 | hplink->multi_subspace = multi_subspace; | |
2261 | hplink->add_stub_section = add_stub_section; | |
2262 | hplink->layout_sections_again = layout_sections_again; | |
2263 | ||
2264 | /* Count the number of input BFDs and the total number of input sections. */ | |
2265 | for (input_bfd = info->input_bfds, bfd_count = 0, sec_count = 0; | |
2266 | input_bfd != NULL; | |
2267 | input_bfd = input_bfd->link_next) | |
2268 | { | |
2269 | bfd_count += 1; | |
2270 | sec_count += input_bfd->section_count; | |
2271 | } | |
2272 | ||
2273 | hplink->stub_section_created | |
2274 | = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count); | |
2275 | if (hplink->stub_section_created == NULL) | |
2276 | return false; | |
2277 | ||
2278 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2279 | hplink->reloc_section_created | |
2280 | = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count); | |
2281 | if (hplink->reloc_section_created == NULL) | |
2282 | goto error_ret_free_stub; | |
2283 | #endif | |
2284 | ||
2285 | /* We want to read in symbol extension records only once. To do this | |
2286 | we need to read in the local symbols in parallel and save them for | |
2287 | later use; so hold pointers to the local symbols in an array. */ | |
2288 | all_local_syms | |
2289 | = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *) | |
2290 | * bfd_count); | |
2291 | if (all_local_syms == NULL) | |
2292 | goto error_ret_free_reloc; | |
2293 | ||
2294 | /* Walk over all the input BFDs, swapping in local symbols. | |
2295 | If we are creating a shared library, create hash entries for the | |
2296 | export stubs. */ | |
2297 | for (input_bfd = info->input_bfds, indx = 0, sec_count = 0; | |
2298 | input_bfd != NULL; | |
2299 | input_bfd = input_bfd->link_next, indx++) | |
2300 | { | |
2301 | Elf_Internal_Shdr *symtab_hdr; | |
2302 | Elf_Internal_Sym *isym; | |
2303 | Elf32_External_Sym *ext_syms, *esym; | |
edd21aca | 2304 | |
252b5132 RH |
2305 | /* We'll need the symbol table in a second. */ |
2306 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2307 | if (symtab_hdr->sh_info == 0) | |
2308 | continue; | |
2309 | ||
edd21aca AM |
2310 | /* We need an array of the local symbols attached to the input bfd. |
2311 | Unfortunately, we're going to have to read & swap them in. */ | |
2312 | local_syms = (Elf_Internal_Sym *) | |
2313 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym)); | |
2314 | if (local_syms == NULL) | |
2315 | { | |
2316 | goto error_ret_free_local; | |
2317 | } | |
2318 | all_local_syms[indx] = local_syms; | |
2319 | ext_syms = (Elf32_External_Sym *) | |
2320 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)); | |
2321 | if (ext_syms == NULL) | |
2322 | { | |
2323 | goto error_ret_free_local; | |
2324 | } | |
2325 | ||
2326 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
30667bf3 | 2327 | || (bfd_read (ext_syms, 1, |
edd21aca AM |
2328 | (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)), |
2329 | input_bfd) | |
2330 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
2331 | { | |
2332 | free (ext_syms); | |
2333 | goto error_ret_free_local; | |
2334 | } | |
2335 | ||
2336 | /* Swap the local symbols in. */ | |
2337 | isym = local_syms; | |
2338 | esym = ext_syms; | |
2339 | for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++) | |
2340 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); | |
2341 | ||
2342 | /* Now we can free the external symbols. */ | |
2343 | free (ext_syms); | |
edd21aca | 2344 | |
30667bf3 AM |
2345 | if (info->shared && hplink->multi_subspace) |
2346 | { | |
2347 | unsigned int symndx; | |
2348 | unsigned int symcount; | |
2349 | ||
2350 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2351 | - symtab_hdr->sh_info); | |
2352 | ||
2353 | /* Look through the global syms for functions; We need to | |
2354 | build export stubs for all globally visible functions. */ | |
2355 | for (symndx = 0; symndx < symcount; symndx++) | |
2356 | { | |
2357 | struct elf32_hppa_link_hash_entry *hash; | |
2358 | ||
2359 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2360 | elf_sym_hashes (input_bfd)[symndx]); | |
2361 | ||
2362 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2363 | || hash->elf.root.type == bfd_link_hash_warning) | |
2364 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2365 | hash->elf.root.u.i.link); | |
2366 | ||
2367 | /* At this point in the link, undefined syms have been | |
2368 | resolved, so we need to check that the symbol was | |
2369 | defined in this BFD. */ | |
2370 | if ((hash->elf.root.type == bfd_link_hash_defined | |
2371 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2372 | && hash->elf.type == STT_FUNC | |
2373 | && hash->elf.root.u.def.section->output_section != NULL | |
2374 | && hash->elf.root.u.def.section->owner == input_bfd | |
2375 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
2376 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) | |
2377 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT) | |
2378 | { | |
2379 | asection *sec; | |
2380 | const char *stub_name; | |
2381 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2382 | ||
2383 | sec = hash->elf.root.u.def.section; | |
2384 | stub_name = hash->elf.root.root.string; | |
2385 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2386 | stub_name, | |
2387 | false, false); | |
2388 | if (stub_entry == NULL) | |
2389 | { | |
2390 | stub_entry = hppa_add_stub (stub_name, | |
2391 | sec, | |
2392 | sec_count + sec->index, | |
2393 | info); | |
2394 | if (!stub_entry) | |
2395 | goto error_ret_free_local; | |
2396 | ||
2397 | stub_entry->target_value = hash->elf.root.u.def.value; | |
2398 | stub_entry->target_section = hash->elf.root.u.def.section; | |
2399 | stub_entry->stub_type = hppa_stub_export; | |
2400 | stub_entry->h = hash; | |
2401 | stub_changed = 1; | |
2402 | } | |
2403 | else | |
2404 | { | |
2405 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"), | |
2406 | bfd_get_filename (input_bfd), | |
2407 | stub_name); | |
2408 | } | |
2409 | } | |
2410 | } | |
2411 | sec_count += input_bfd->section_count; | |
2412 | } | |
2413 | } | |
edd21aca AM |
2414 | |
2415 | while (1) | |
2416 | { | |
30667bf3 AM |
2417 | asection *stub_sec; |
2418 | ||
2419 | for (input_bfd = info->input_bfds, indx = 0, sec_count = 0; | |
2420 | input_bfd != NULL; | |
2421 | input_bfd = input_bfd->link_next, indx++) | |
2422 | { | |
2423 | Elf_Internal_Shdr *symtab_hdr; | |
2424 | ||
2425 | /* We'll need the symbol table in a second. */ | |
2426 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2427 | if (symtab_hdr->sh_info == 0) | |
2428 | continue; | |
2429 | ||
2430 | local_syms = all_local_syms[indx]; | |
2431 | ||
2432 | /* Walk over each section attached to the input bfd. */ | |
2433 | for (section = input_bfd->sections; | |
2434 | section != NULL; | |
2435 | section = section->next, sec_count++) | |
2436 | { | |
2437 | Elf_Internal_Shdr *input_rel_hdr; | |
2438 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2439 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2440 | ||
2441 | /* If there aren't any relocs, then there's nothing more | |
2442 | to do. */ | |
2443 | if ((section->flags & SEC_RELOC) == 0 | |
2444 | || section->reloc_count == 0) | |
2445 | continue; | |
2446 | ||
2447 | /* Allocate space for the external relocations. */ | |
2448 | external_relocs | |
2449 | = ((Elf32_External_Rela *) | |
2450 | bfd_malloc (section->reloc_count | |
2451 | * sizeof (Elf32_External_Rela))); | |
2452 | if (external_relocs == NULL) | |
2453 | { | |
2454 | goto error_ret_free_local; | |
2455 | } | |
2456 | ||
2457 | /* Likewise for the internal relocations. */ | |
2458 | internal_relocs = ((Elf_Internal_Rela *) | |
2459 | bfd_malloc (section->reloc_count | |
2460 | * sizeof (Elf_Internal_Rela))); | |
2461 | if (internal_relocs == NULL) | |
2462 | { | |
2463 | free (external_relocs); | |
2464 | goto error_ret_free_local; | |
2465 | } | |
2466 | ||
2467 | /* Read in the external relocs. */ | |
2468 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2469 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
2470 | || bfd_read (external_relocs, 1, | |
2471 | input_rel_hdr->sh_size, | |
2472 | input_bfd) != input_rel_hdr->sh_size) | |
2473 | { | |
2474 | free (external_relocs); | |
2475 | error_ret_free_internal: | |
2476 | free (internal_relocs); | |
2477 | goto error_ret_free_local; | |
2478 | } | |
2479 | ||
2480 | /* Swap in the relocs. */ | |
2481 | erela = external_relocs; | |
2482 | erelaend = erela + section->reloc_count; | |
2483 | irela = internal_relocs; | |
2484 | for (; erela < erelaend; erela++, irela++) | |
2485 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
2486 | ||
2487 | /* We're done with the external relocs, free them. */ | |
2488 | free (external_relocs); | |
2489 | ||
2490 | /* Now examine each relocation. */ | |
2491 | irela = internal_relocs; | |
2492 | irelaend = irela + section->reloc_count; | |
2493 | for (; irela < irelaend; irela++) | |
2494 | { | |
2495 | unsigned int r_type, r_indx; | |
2496 | enum elf32_hppa_stub_type stub_type; | |
2497 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2498 | asection *sym_sec; | |
2499 | bfd_vma sym_value; | |
2500 | bfd_vma destination; | |
2501 | struct elf32_hppa_link_hash_entry *hash; | |
2502 | char *stub_name; | |
2503 | ||
2504 | r_type = ELF32_R_TYPE (irela->r_info); | |
2505 | r_indx = ELF32_R_SYM (irela->r_info); | |
2506 | ||
2507 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
2508 | { | |
2509 | bfd_set_error (bfd_error_bad_value); | |
2510 | goto error_ret_free_internal; | |
2511 | } | |
2512 | ||
2513 | /* Only look for stubs on call instructions. */ | |
2514 | if (r_type != (unsigned int) R_PARISC_PCREL12F | |
2515 | && r_type != (unsigned int) R_PARISC_PCREL17F | |
2516 | && r_type != (unsigned int) R_PARISC_PCREL22F) | |
2517 | continue; | |
2518 | ||
2519 | /* Now determine the call target, its name, value, | |
2520 | section. */ | |
2521 | sym_sec = NULL; | |
2522 | sym_value = 0; | |
2523 | destination = 0; | |
2524 | hash = NULL; | |
2525 | if (r_indx < symtab_hdr->sh_info) | |
2526 | { | |
2527 | /* It's a local symbol. */ | |
2528 | Elf_Internal_Sym *sym; | |
2529 | Elf_Internal_Shdr *hdr; | |
2530 | ||
2531 | sym = local_syms + r_indx; | |
2532 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2533 | sym_sec = hdr->bfd_section; | |
2534 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2535 | sym_value = sym->st_value; | |
2536 | destination = (sym_value + irela->r_addend | |
2537 | + sym_sec->output_offset | |
2538 | + sym_sec->output_section->vma); | |
2539 | } | |
2540 | else | |
2541 | { | |
2542 | /* It's an external symbol. */ | |
2543 | int e_indx; | |
2544 | ||
2545 | e_indx = r_indx - symtab_hdr->sh_info; | |
2546 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2547 | elf_sym_hashes (input_bfd)[e_indx]); | |
2548 | ||
2549 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2550 | || hash->elf.root.type == bfd_link_hash_warning) | |
2551 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2552 | hash->elf.root.u.i.link); | |
2553 | ||
2554 | if (hash->elf.root.type == bfd_link_hash_defined | |
2555 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2556 | { | |
2557 | sym_sec = hash->elf.root.u.def.section; | |
2558 | sym_value = hash->elf.root.u.def.value; | |
2559 | if (sym_sec->output_section != NULL) | |
2560 | destination = (sym_value + irela->r_addend | |
2561 | + sym_sec->output_offset | |
2562 | + sym_sec->output_section->vma); | |
2563 | } | |
2564 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
2565 | { | |
2566 | if (! info->shared) | |
2567 | continue; | |
2568 | } | |
2569 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
2570 | { | |
2571 | if (! (info->shared | |
2572 | && !info->no_undefined | |
2573 | && (ELF_ST_VISIBILITY (hash->elf.other) | |
2574 | == STV_DEFAULT))) | |
2575 | continue; | |
2576 | } | |
2577 | else | |
2578 | { | |
2579 | bfd_set_error (bfd_error_bad_value); | |
2580 | goto error_ret_free_internal; | |
2581 | } | |
2582 | } | |
2583 | ||
2584 | /* Determine what (if any) linker stub is needed. */ | |
2585 | stub_type = hppa_type_of_stub (section, irela, hash, | |
2586 | destination); | |
2587 | if (stub_type == hppa_stub_none) | |
2588 | continue; | |
2589 | ||
2590 | /* Get the name of this stub. */ | |
2591 | stub_name = hppa_stub_name (section, sym_sec, hash, irela); | |
2592 | if (!stub_name) | |
2593 | goto error_ret_free_internal; | |
2594 | ||
2595 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2596 | stub_name, | |
2597 | false, false); | |
2598 | if (stub_entry != NULL) | |
2599 | { | |
2600 | /* The proper stub has already been created. */ | |
2601 | free (stub_name); | |
2602 | continue; | |
2603 | } | |
2604 | ||
2605 | stub_entry = hppa_add_stub (stub_name, section, | |
2606 | sec_count, info); | |
2607 | if (stub_entry == NULL) | |
2608 | { | |
2609 | free (stub_name); | |
2610 | goto error_ret_free_local; | |
2611 | } | |
2612 | ||
2613 | stub_entry->target_value = sym_value; | |
2614 | stub_entry->target_section = sym_sec; | |
2615 | stub_entry->stub_type = stub_type; | |
2616 | if (info->shared) | |
2617 | { | |
2618 | if (stub_type == hppa_stub_import) | |
2619 | stub_entry->stub_type = hppa_stub_import_shared; | |
2620 | else if (stub_type == hppa_stub_long_branch | |
2621 | && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL)) | |
2622 | stub_entry->stub_type = hppa_stub_long_branch_shared; | |
2623 | } | |
2624 | stub_entry->h = hash; | |
2625 | stub_changed = 1; | |
2626 | } | |
2627 | ||
2628 | /* We're done with the internal relocs, free them. */ | |
2629 | free (internal_relocs); | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | if (!stub_changed) | |
2634 | break; | |
2635 | ||
2636 | /* OK, we've added some stubs. Find out the new size of the | |
2637 | stub sections. */ | |
2638 | hplink->offset = (bfd_vma *) | |
2639 | bfd_realloc (hplink->offset, | |
2640 | hplink->stub_bfd->section_count * sizeof (bfd_vma)); | |
2641 | if (hplink->offset == NULL) | |
2642 | goto error_ret_free_local; | |
2643 | ||
2644 | memset (hplink->offset, 0, | |
2645 | hplink->stub_bfd->section_count * sizeof (bfd_vma)); | |
2646 | ||
2647 | bfd_hash_traverse (&hplink->stub_hash_table, | |
2648 | hppa_size_one_stub, | |
2649 | hplink); | |
2650 | ||
2651 | for (stub_sec = hplink->stub_bfd->sections; | |
2652 | stub_sec != NULL; | |
2653 | stub_sec = stub_sec->next) | |
2654 | { | |
2655 | bfd_set_section_size (hplink->stub_bfd, stub_sec, | |
2656 | hplink->offset[stub_sec->index]); | |
2657 | } | |
2658 | /* Ask the linker to do its stuff. */ | |
2659 | (*hplink->layout_sections_again) (); | |
2660 | stub_changed = 0; | |
2661 | } | |
2662 | ||
2663 | /* We're done with the local symbols, free them. */ | |
2664 | for (i = 0; i < bfd_count; i++) | |
2665 | if (all_local_syms[i]) | |
2666 | free (all_local_syms[i]); | |
2667 | free (all_local_syms); | |
2668 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2669 | free (hplink->reloc_section_created); | |
2670 | #endif | |
2671 | free (hplink->stub_section_created); | |
2672 | return true; | |
2673 | ||
2674 | error_ret_free_local: | |
2675 | for (i = 0; i < bfd_count; i++) | |
2676 | if (all_local_syms[i]) | |
2677 | free (all_local_syms[i]); | |
2678 | free (all_local_syms); | |
2679 | ||
2680 | error_ret_free_reloc: | |
2681 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
2682 | free (hplink->reloc_section_created); | |
2683 | error_ret_free_stub: | |
2684 | #endif | |
2685 | free (hplink->stub_section_created); | |
2686 | return false; | |
2687 | } | |
2688 | ||
2689 | ||
2690 | /* For a final link, this function is called after we have sized the | |
2691 | stubs to provide a value for __gp. */ | |
2692 | ||
2693 | boolean | |
2694 | elf32_hppa_set_gp (abfd, info) | |
2695 | bfd *abfd; | |
2696 | struct bfd_link_info *info; | |
2697 | { | |
2698 | struct elf_link_hash_entry *h; | |
2699 | asection *sec; | |
2700 | bfd_vma gp_val; | |
2701 | ||
2702 | h = elf_link_hash_lookup (elf_hash_table (info), "$global$", | |
2703 | false, false, false); | |
2704 | ||
2705 | if (h != NULL && h->root.type == bfd_link_hash_defined) | |
2706 | { | |
2707 | gp_val = h->root.u.def.value; | |
2708 | sec = h->root.u.def.section; | |
2709 | } | |
2710 | else | |
2711 | { | |
2712 | /* If $global$ isn't defined, we make one up ourselves | |
2713 | from the start of .data, .plt, or .got. */ | |
2714 | struct elf32_hppa_link_hash_table *hplink; | |
2715 | ||
2716 | hplink = hppa_link_hash_table (info); | |
2717 | gp_val = 0; | |
2718 | sec = bfd_get_section_by_name (abfd, ".data"); | |
2719 | if (sec == NULL) | |
2720 | sec = hplink->splt; | |
2721 | if (sec == NULL) | |
2722 | sec = hplink->sgot; | |
2723 | if (sec == NULL) | |
2724 | { | |
2725 | (*info->callbacks->undefined_symbol) | |
2726 | (info, "$global$", abfd, NULL, 0, true); | |
2727 | return false; | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | elf_gp (abfd) = (gp_val | |
2732 | + sec->output_section->vma | |
2733 | + sec->output_offset); | |
2734 | return true; | |
2735 | } | |
2736 | ||
2737 | ||
2738 | /* Build all the stubs associated with the current output file. The | |
2739 | stubs are kept in a hash table attached to the main linker hash | |
2740 | table. We also set up the .plt entries for statically linked PIC | |
2741 | functions here. This function is called via hppaelf_finish in the | |
2742 | linker. */ | |
2743 | ||
2744 | boolean | |
2745 | elf32_hppa_build_stubs (info) | |
2746 | struct bfd_link_info *info; | |
2747 | { | |
2748 | asection *stub_sec; | |
2749 | struct bfd_hash_table *table; | |
2750 | struct elf32_hppa_link_hash_table *hplink; | |
2751 | ||
2752 | hplink = hppa_link_hash_table (info); | |
2753 | ||
2754 | for (stub_sec = hplink->stub_bfd->sections; | |
2755 | stub_sec != NULL; | |
2756 | stub_sec = stub_sec->next) | |
2757 | { | |
2758 | unsigned int size; | |
2759 | ||
2760 | /* Allocate memory to hold the linker stubs. */ | |
2761 | size = bfd_section_size (hplink->stub_bfd, stub_sec); | |
2762 | stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd, | |
2763 | size); | |
2764 | if (stub_sec->contents == NULL && size != 0) | |
2765 | return false; | |
2766 | } | |
2767 | ||
2768 | /* Build the stubs as directed by the stub hash table. */ | |
2769 | memset (hplink->offset, 0, | |
2770 | hplink->stub_bfd->section_count * sizeof (bfd_vma)); | |
2771 | ||
2772 | table = &hplink->stub_hash_table; | |
2773 | bfd_hash_traverse (table, hppa_build_one_stub, info); | |
2774 | ||
2775 | return true; | |
2776 | } | |
2777 | ||
2778 | ||
2779 | /* Perform a relocation as part of a final link. */ | |
2780 | ||
2781 | static bfd_reloc_status_type | |
2782 | final_link_relocate (input_section, contents, rel, value, info, sym_sec, h) | |
2783 | asection *input_section; | |
2784 | bfd_byte *contents; | |
2785 | const Elf_Internal_Rela *rel; | |
2786 | bfd_vma value; | |
2787 | struct bfd_link_info *info; | |
2788 | asection *sym_sec; | |
2789 | struct elf32_hppa_link_hash_entry *h; | |
2790 | { | |
2791 | int insn; | |
2792 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); | |
2793 | reloc_howto_type *howto = elf_hppa_howto_table + r_type; | |
2794 | int r_format = howto->bitsize; | |
2795 | enum hppa_reloc_field_selector_type_alt r_field; | |
2796 | bfd *input_bfd = input_section->owner; | |
2797 | bfd_vma offset = rel->r_offset; | |
2798 | bfd_vma max_branch_offset = 0; | |
2799 | bfd_byte *hit_data = contents + offset; | |
2800 | bfd_signed_vma addend = rel->r_addend; | |
2801 | bfd_vma location; | |
2802 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL; | |
2803 | int val; | |
2804 | ||
2805 | if (r_type == R_PARISC_NONE) | |
2806 | return bfd_reloc_ok; | |
2807 | ||
2808 | insn = bfd_get_32 (input_bfd, hit_data); | |
2809 | ||
2810 | /* Find out where we are and where we're going. */ | |
2811 | location = (offset + | |
2812 | input_section->output_offset + | |
2813 | input_section->output_section->vma); | |
2814 | ||
2815 | switch (r_type) | |
2816 | { | |
2817 | case R_PARISC_PCREL12F: | |
2818 | case R_PARISC_PCREL17F: | |
2819 | case R_PARISC_PCREL22F: | |
2820 | /* If this is a call to a function defined in another dynamic | |
2821 | library, or if it is a call to a PIC function in the same | |
2822 | object, then find the import stub in the stub hash. */ | |
2823 | if (sym_sec == NULL | |
2824 | || sym_sec->output_section == NULL | |
2825 | || (h != NULL && h->pic_call)) | |
2826 | { | |
2827 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
2828 | h, rel, info); | |
2829 | if (stub_entry != NULL) | |
2830 | { | |
2831 | value = (stub_entry->stub_offset | |
2832 | + stub_entry->stub_sec->output_offset | |
2833 | + stub_entry->stub_sec->output_section->vma); | |
2834 | addend = 0; | |
2835 | } | |
2836 | else if (sym_sec == NULL && h != NULL | |
2837 | && h->elf.root.type == bfd_link_hash_undefweak) | |
2838 | { | |
2839 | /* It's OK if undefined weak. Make undefined weak | |
2840 | branches go nowhere. */ | |
2841 | value = location; | |
2842 | addend = 0; | |
2843 | } | |
2844 | else | |
2845 | return bfd_reloc_notsupported; | |
2846 | } | |
2847 | /* Fall thru. */ | |
2848 | ||
2849 | case R_PARISC_PCREL21L: | |
2850 | case R_PARISC_PCREL17C: | |
2851 | case R_PARISC_PCREL17R: | |
2852 | case R_PARISC_PCREL14R: | |
2853 | case R_PARISC_PCREL14F: | |
2854 | /* Make it a pc relative offset. */ | |
2855 | value -= location; | |
2856 | addend -= 8; | |
2857 | break; | |
2858 | ||
2859 | case R_PARISC_DPREL21L: | |
2860 | case R_PARISC_DPREL14R: | |
2861 | case R_PARISC_DPREL14F: | |
2862 | /* For all the DP relative relocations, we need to examine the symbol's | |
2863 | section. If it's a code section, then "data pointer relative" makes | |
2864 | no sense. In that case we don't adjust the "value", and for 21 bit | |
2865 | addil instructions, we change the source addend register from %dp to | |
2866 | %r0. This situation commonly arises when a variable's "constness" | |
2867 | is declared differently from the way the variable is defined. For | |
2868 | instance: "extern int foo" with foo defined as "const int foo". */ | |
2869 | if (sym_sec == NULL) | |
2870 | break; | |
2871 | if ((sym_sec->flags & SEC_CODE) != 0) | |
2872 | { | |
2873 | if ((insn & ((0x3f << 26) | (0x1f << 21))) | |
2874 | == (((int) OP_ADDIL << 26) | (27 << 21))) | |
2875 | { | |
2876 | insn &= ~ (0x1f << 21); | |
2877 | #if 1 /* debug them */ | |
2878 | (*_bfd_error_handler) | |
2879 | (_("%s(%s+0x%lx): fixing %s"), | |
2880 | bfd_get_filename (input_bfd), | |
2881 | input_section->name, | |
2882 | (long) rel->r_offset, | |
2883 | howto->name); | |
2884 | #endif | |
2885 | } | |
2886 | /* Now try to make things easy for the dynamic linker. */ | |
2887 | ||
2888 | break; | |
2889 | } | |
2890 | /* Fall thru */ | |
2891 | ||
2892 | case R_PARISC_DLTIND21L: | |
2893 | case R_PARISC_DLTIND14R: | |
2894 | case R_PARISC_DLTIND14F: | |
2895 | value -= elf_gp (input_section->output_section->owner); | |
2896 | break; | |
2897 | ||
2898 | default: | |
2899 | break; | |
2900 | } | |
2901 | ||
2902 | switch (r_type) | |
2903 | { | |
2904 | case R_PARISC_DIR32: | |
2905 | case R_PARISC_DIR17F: | |
2906 | case R_PARISC_PCREL17C: | |
2907 | case R_PARISC_PCREL14F: | |
2908 | case R_PARISC_DPREL14F: | |
2909 | case R_PARISC_PLABEL32: | |
2910 | case R_PARISC_DLTIND14F: | |
2911 | case R_PARISC_SEGBASE: | |
2912 | case R_PARISC_SEGREL32: | |
2913 | r_field = e_fsel; | |
2914 | break; | |
2915 | ||
2916 | case R_PARISC_DIR21L: | |
2917 | case R_PARISC_PCREL21L: | |
2918 | case R_PARISC_DPREL21L: | |
2919 | case R_PARISC_PLABEL21L: | |
2920 | case R_PARISC_DLTIND21L: | |
2921 | r_field = e_lrsel; | |
2922 | break; | |
2923 | ||
2924 | case R_PARISC_DIR17R: | |
2925 | case R_PARISC_PCREL17R: | |
2926 | case R_PARISC_DIR14R: | |
2927 | case R_PARISC_PCREL14R: | |
2928 | case R_PARISC_DPREL14R: | |
2929 | case R_PARISC_PLABEL14R: | |
2930 | case R_PARISC_DLTIND14R: | |
2931 | r_field = e_rrsel; | |
2932 | break; | |
2933 | ||
2934 | case R_PARISC_PCREL12F: | |
2935 | case R_PARISC_PCREL17F: | |
2936 | case R_PARISC_PCREL22F: | |
2937 | r_field = e_fsel; | |
2938 | ||
2939 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
2940 | { | |
2941 | max_branch_offset = (1 << (17-1)) << 2; | |
2942 | } | |
2943 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
2944 | { | |
2945 | max_branch_offset = (1 << (12-1)) << 2; | |
2946 | } | |
2947 | else | |
2948 | { | |
2949 | max_branch_offset = (1 << (22-1)) << 2; | |
2950 | } | |
2951 | ||
2952 | /* sym_sec is NULL on undefined weak syms or when shared on | |
2953 | undefined syms. We've already checked for a stub for the | |
2954 | shared undefined case. */ | |
2955 | if (sym_sec == NULL) | |
2956 | break; | |
2957 | ||
2958 | /* If the branch is out of reach, then redirect the | |
2959 | call to the local stub for this function. */ | |
2960 | if (value + addend + max_branch_offset >= 2*max_branch_offset) | |
2961 | { | |
2962 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
2963 | h, rel, info); | |
2964 | if (stub_entry == NULL) | |
2965 | return bfd_reloc_notsupported; | |
2966 | ||
2967 | /* Munge up the value and addend so that we call the stub | |
2968 | rather than the procedure directly. */ | |
2969 | value = (stub_entry->stub_offset | |
2970 | + stub_entry->stub_sec->output_offset | |
2971 | + stub_entry->stub_sec->output_section->vma | |
2972 | - location); | |
2973 | addend = -8; | |
2974 | } | |
2975 | break; | |
2976 | ||
2977 | /* Something we don't know how to handle. */ | |
2978 | default: | |
2979 | return bfd_reloc_notsupported; | |
2980 | } | |
2981 | ||
2982 | /* Make sure we can reach the stub. */ | |
2983 | if (max_branch_offset != 0 | |
2984 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
2985 | { | |
2986 | (*_bfd_error_handler) | |
2987 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), | |
2988 | bfd_get_filename (input_bfd), | |
2989 | input_section->name, | |
2990 | (long) rel->r_offset, | |
2991 | stub_entry->root.string); | |
2992 | return bfd_reloc_notsupported; | |
2993 | } | |
2994 | ||
2995 | val = hppa_field_adjust (value, addend, r_field); | |
2996 | ||
2997 | switch (r_type) | |
2998 | { | |
2999 | case R_PARISC_PCREL12F: | |
3000 | case R_PARISC_PCREL17C: | |
3001 | case R_PARISC_PCREL17F: | |
3002 | case R_PARISC_PCREL17R: | |
3003 | case R_PARISC_PCREL22F: | |
3004 | case R_PARISC_DIR17F: | |
3005 | case R_PARISC_DIR17R: | |
3006 | /* This is a branch. Divide the offset by four. | |
3007 | Note that we need to decide whether it's a branch or | |
3008 | otherwise by inspecting the reloc. Inspecting insn won't | |
3009 | work as insn might be from a .word directive. */ | |
3010 | val >>= 2; | |
3011 | break; | |
3012 | ||
3013 | default: | |
3014 | break; | |
3015 | } | |
3016 | ||
3017 | insn = hppa_rebuild_insn (insn, val, r_format); | |
3018 | ||
3019 | /* Update the instruction word. */ | |
3020 | bfd_put_32 (input_bfd, (unsigned int) insn, hit_data); | |
3021 | return bfd_reloc_ok; | |
3022 | } | |
3023 | ||
3024 | ||
3025 | /* Relocate an HPPA ELF section. */ | |
3026 | ||
3027 | static boolean | |
3028 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
3029 | contents, relocs, local_syms, local_sections) | |
3030 | bfd *output_bfd; | |
3031 | struct bfd_link_info *info; | |
3032 | bfd *input_bfd; | |
3033 | asection *input_section; | |
3034 | bfd_byte *contents; | |
3035 | Elf_Internal_Rela *relocs; | |
3036 | Elf_Internal_Sym *local_syms; | |
3037 | asection **local_sections; | |
3038 | { | |
3039 | bfd *dynobj; | |
3040 | bfd_vma *local_got_offsets; | |
3041 | struct elf32_hppa_link_hash_table *hplink; | |
3042 | Elf_Internal_Shdr *symtab_hdr; | |
3043 | Elf_Internal_Rela *rel; | |
3044 | Elf_Internal_Rela *relend; | |
3045 | asection *sreloc; | |
3046 | ||
3047 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3048 | ||
3049 | dynobj = elf_hash_table (info)->dynobj; | |
3050 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
3051 | hplink = hppa_link_hash_table (info); | |
3052 | sreloc = NULL; | |
3053 | ||
3054 | rel = relocs; | |
3055 | relend = relocs + input_section->reloc_count; | |
3056 | for (; rel < relend; rel++) | |
3057 | { | |
3058 | unsigned int r_type; | |
3059 | reloc_howto_type *howto; | |
3060 | unsigned int r_symndx; | |
3061 | struct elf32_hppa_link_hash_entry *h; | |
3062 | Elf_Internal_Sym *sym; | |
3063 | asection *sym_sec; | |
3064 | bfd_vma relocation; | |
3065 | bfd_reloc_status_type r; | |
3066 | const char *sym_name; | |
3067 | boolean pltrel; | |
3068 | ||
3069 | r_type = ELF32_R_TYPE (rel->r_info); | |
3070 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3071 | { | |
3072 | bfd_set_error (bfd_error_bad_value); | |
3073 | return false; | |
3074 | } | |
3075 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3076 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3077 | continue; | |
3078 | ||
3079 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3080 | ||
3081 | if (info->relocateable) | |
3082 | { | |
3083 | /* This is a relocateable link. We don't have to change | |
3084 | anything, unless the reloc is against a section symbol, | |
3085 | in which case we have to adjust according to where the | |
3086 | section symbol winds up in the output section. */ | |
3087 | if (r_symndx < symtab_hdr->sh_info) | |
3088 | { | |
3089 | sym = local_syms + r_symndx; | |
3090 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3091 | { | |
3092 | sym_sec = local_sections[r_symndx]; | |
3093 | rel->r_addend += sym_sec->output_offset; | |
3094 | } | |
3095 | } | |
3096 | continue; | |
3097 | } | |
3098 | ||
3099 | /* This is a final link. */ | |
3100 | h = NULL; | |
3101 | sym = NULL; | |
3102 | sym_sec = NULL; | |
3103 | if (r_symndx < symtab_hdr->sh_info) | |
3104 | { | |
3105 | /* This is a local symbol, h defaults to NULL. */ | |
3106 | sym = local_syms + r_symndx; | |
3107 | sym_sec = local_sections[r_symndx]; | |
3108 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3109 | ? 0 : sym->st_value) | |
3110 | + sym_sec->output_offset | |
3111 | + sym_sec->output_section->vma); | |
3112 | } | |
3113 | else | |
3114 | { | |
3115 | int indx; | |
3116 | ||
3117 | /* It's a global; Find its entry in the link hash. */ | |
3118 | indx = r_symndx - symtab_hdr->sh_info; | |
3119 | h = ((struct elf32_hppa_link_hash_entry *) | |
3120 | elf_sym_hashes (input_bfd)[indx]); | |
3121 | while (h->elf.root.type == bfd_link_hash_indirect | |
3122 | || h->elf.root.type == bfd_link_hash_warning) | |
3123 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; | |
3124 | ||
3125 | relocation = 0; | |
3126 | if (h->elf.root.type == bfd_link_hash_defined | |
3127 | || h->elf.root.type == bfd_link_hash_defweak) | |
3128 | { | |
3129 | sym_sec = h->elf.root.u.def.section; | |
3130 | /* If sym_sec->output_section is NULL, then it's a | |
3131 | symbol defined in a shared library. */ | |
3132 | if (sym_sec->output_section != NULL) | |
3133 | relocation = (h->elf.root.u.def.value | |
3134 | + sym_sec->output_offset | |
3135 | + sym_sec->output_section->vma); | |
3136 | } | |
3137 | else if (h->elf.root.type == bfd_link_hash_undefweak) | |
3138 | ; | |
3139 | else if (info->shared && !info->no_undefined | |
3140 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT) | |
3141 | { | |
3142 | if (info->symbolic) | |
3143 | if (!((*info->callbacks->undefined_symbol) | |
3144 | (info, h->elf.root.root.string, input_bfd, | |
3145 | input_section, rel->r_offset, false))) | |
3146 | return false; | |
3147 | } | |
3148 | else | |
3149 | { | |
3150 | if (!((*info->callbacks->undefined_symbol) | |
3151 | (info, h->elf.root.root.string, input_bfd, | |
3152 | input_section, rel->r_offset, true))) | |
3153 | return false; | |
3154 | } | |
3155 | } | |
3156 | ||
3157 | /* Do any required modifications to the relocation value, and | |
3158 | determine what types of dynamic info we need to output, if | |
3159 | any. */ | |
3160 | pltrel = 0; | |
3161 | switch (r_type) | |
3162 | { | |
3163 | case R_PARISC_DLTIND14F: | |
3164 | case R_PARISC_DLTIND14R: | |
3165 | case R_PARISC_DLTIND21L: | |
3166 | /* Relocation is to the entry for this symbol in the global | |
3167 | offset table. */ | |
3168 | if (h != NULL) | |
3169 | { | |
3170 | bfd_vma off; | |
3171 | ||
3172 | off = h->elf.got.offset; | |
3173 | BFD_ASSERT (off != (bfd_vma) -1); | |
3174 | ||
3175 | if (! elf_hash_table (info)->dynamic_sections_created | |
3176 | || (info->shared | |
3177 | && (info->symbolic || h->elf.dynindx == -1) | |
3178 | && (h->elf.elf_link_hash_flags | |
3179 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
3180 | { | |
3181 | /* This is actually a static link, or it is a | |
3182 | -Bsymbolic link and the symbol is defined | |
3183 | locally, or the symbol was forced to be local | |
3184 | because of a version file. We must initialize | |
3185 | this entry in the global offset table. Since the | |
3186 | offset must always be a multiple of 4, we use the | |
3187 | least significant bit to record whether we have | |
3188 | initialized it already. | |
3189 | ||
3190 | When doing a dynamic link, we create a .rela.got | |
3191 | relocation entry to initialize the value. This | |
3192 | is done in the finish_dynamic_symbol routine. */ | |
3193 | if ((off & 1) != 0) | |
3194 | off &= ~1; | |
3195 | else | |
3196 | { | |
3197 | bfd_put_32 (output_bfd, relocation, | |
3198 | hplink->sgot->contents + off); | |
3199 | h->elf.got.offset |= 1; | |
3200 | } | |
3201 | } | |
3202 | ||
3203 | relocation = off; | |
3204 | } | |
3205 | else | |
3206 | { | |
3207 | /* Local symbol case. */ | |
3208 | bfd_vma off; | |
3209 | ||
3210 | BFD_ASSERT (local_got_offsets != NULL | |
3211 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
3212 | ||
3213 | off = local_got_offsets[r_symndx]; | |
3214 | ||
3215 | /* The offset must always be a multiple of 4. We use | |
3216 | the least significant bit to record whether we have | |
3217 | already generated the necessary reloc. */ | |
3218 | if ((off & 1) != 0) | |
3219 | off &= ~1; | |
3220 | else | |
3221 | { | |
3222 | bfd_put_32 (output_bfd, relocation, | |
3223 | hplink->sgot->contents + off); | |
3224 | ||
3225 | if (info->shared) | |
3226 | { | |
3227 | /* Output a dynamic SEGREL32 relocation for this | |
3228 | GOT entry. In this case it is relative to | |
3229 | the base of the object because the symbol | |
3230 | index is zero. */ | |
3231 | Elf_Internal_Rela outrel; | |
3232 | asection *srelgot = hplink->srelgot; | |
3233 | ||
3234 | outrel.r_offset = (off | |
3235 | + hplink->sgot->output_offset | |
3236 | + hplink->sgot->output_section->vma); | |
3237 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_SEGREL32); | |
3238 | outrel.r_addend = relocation; | |
3239 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3240 | ((Elf32_External_Rela *) | |
3241 | srelgot->contents | |
3242 | + srelgot->reloc_count)); | |
3243 | ++srelgot->reloc_count; | |
3244 | } | |
252b5132 | 3245 | |
30667bf3 AM |
3246 | local_got_offsets[r_symndx] |= 1; |
3247 | } | |
252b5132 | 3248 | |
30667bf3 AM |
3249 | relocation = off; |
3250 | } | |
252b5132 | 3251 | |
30667bf3 AM |
3252 | /* Add the base of the GOT to the relocation value. */ |
3253 | relocation += (hplink->sgot->output_offset | |
3254 | + hplink->sgot->output_section->vma); | |
3255 | break; | |
252b5132 | 3256 | |
30667bf3 AM |
3257 | case R_PARISC_PLABEL14R: |
3258 | case R_PARISC_PLABEL21L: | |
3259 | case R_PARISC_PLABEL32: | |
3260 | /* If we have a global symbol with a PLT slot, then redirect | |
3261 | this relocation to it. */ | |
3262 | if (h != NULL | |
3263 | && h->elf.dynindx != -1 | |
3264 | && h->elf.plt.offset != (bfd_vma) -1) | |
252b5132 | 3265 | { |
30667bf3 AM |
3266 | /* PLABELs contain function pointers. Relocation is |
3267 | to the entry for the function in the .plt. The | |
3268 | magic +2 offset signals to $$dyncall that the | |
3269 | function pointer is in the .plt and thus has a gp | |
3270 | pointer too. */ | |
3271 | relocation = (h->elf.plt.offset | |
3272 | + hplink->splt->output_offset | |
3273 | + hplink->splt->output_section->vma | |
3274 | + 2); | |
3275 | pltrel = 1; | |
3276 | } | |
3277 | /* Fall through and possibly emit a dynamic relocation. */ | |
3278 | ||
3279 | case R_PARISC_DIR17F: | |
3280 | case R_PARISC_DIR17R: | |
3281 | case R_PARISC_DIR14R: | |
3282 | case R_PARISC_DIR21L: | |
3283 | case R_PARISC_DPREL14F: | |
3284 | case R_PARISC_DPREL14R: | |
3285 | case R_PARISC_DPREL21L: | |
3286 | case R_PARISC_DIR32: | |
3287 | /* The reloc types handled here and this conditional | |
3288 | expression must match the code in check_relocs and | |
3289 | hppa_discard_copies. ie. We need exactly the same | |
3290 | condition as in check_relocs, with some extra conditions | |
3291 | (dynindx test in this case) to cater for relocs removed | |
3292 | by hppa_discard_copies. */ | |
3293 | if ((input_section->flags & SEC_ALLOC) != 0 | |
3294 | && info->shared | |
3295 | #if RELATIVE_DYNAMIC_RELOCS | |
3296 | && (is_absolute_reloc (r_type) | |
3297 | || ((!info->symbolic | |
3298 | || (h != NULL | |
3299 | && ((h->elf.elf_link_hash_flags | |
3300 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3301 | || h->elf.root.type == bfd_link_hash_defweak))) | |
3302 | && (h == NULL || h->elf.dynindx != -1))) | |
3303 | #endif | |
3304 | ) | |
3305 | { | |
3306 | Elf_Internal_Rela outrel; | |
3307 | boolean skip; | |
252b5132 | 3308 | |
30667bf3 AM |
3309 | /* When generating a shared object, these relocations |
3310 | are copied into the output file to be resolved at run | |
3311 | time. */ | |
252b5132 | 3312 | |
30667bf3 | 3313 | if (sreloc == NULL) |
edd21aca | 3314 | { |
30667bf3 AM |
3315 | const char *name; |
3316 | ||
3317 | name = (bfd_elf_string_from_elf_section | |
3318 | (input_bfd, | |
3319 | elf_elfheader (input_bfd)->e_shstrndx, | |
3320 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3321 | if (name == NULL) | |
3322 | return false; | |
3323 | sreloc = bfd_get_section_by_name (dynobj, name); | |
3324 | BFD_ASSERT (sreloc != NULL); | |
edd21aca | 3325 | } |
252b5132 | 3326 | |
30667bf3 AM |
3327 | outrel.r_offset = rel->r_offset; |
3328 | outrel.r_addend = rel->r_addend; | |
3329 | skip = false; | |
3330 | if (elf_section_data (input_section)->stab_info != NULL) | |
edd21aca | 3331 | { |
30667bf3 AM |
3332 | bfd_vma off; |
3333 | ||
3334 | off = (_bfd_stab_section_offset | |
3335 | (output_bfd, &elf_hash_table (info)->stab_info, | |
3336 | input_section, | |
3337 | &elf_section_data (input_section)->stab_info, | |
3338 | rel->r_offset)); | |
3339 | if (off == (bfd_vma) -1) | |
3340 | skip = true; | |
3341 | outrel.r_offset = off; | |
edd21aca | 3342 | } |
252b5132 | 3343 | |
30667bf3 AM |
3344 | outrel.r_offset += (input_section->output_offset |
3345 | + input_section->output_section->vma); | |
3346 | ||
3347 | if (skip) | |
252b5132 | 3348 | { |
30667bf3 | 3349 | memset (&outrel, 0, sizeof (outrel)); |
252b5132 | 3350 | } |
30667bf3 AM |
3351 | else if (!pltrel |
3352 | && h != NULL | |
3353 | && ((!info->symbolic && h->elf.dynindx != -1) | |
3354 | || (h->elf.elf_link_hash_flags | |
3355 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 3356 | { |
30667bf3 AM |
3357 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); |
3358 | } | |
3359 | else /* It's a local symbol, or one marked to become local. */ | |
3360 | { | |
3361 | int indx = 0; | |
edd21aca | 3362 | |
30667bf3 AM |
3363 | /* Add the absolute offset of the symbol. */ |
3364 | outrel.r_addend += relocation; | |
edd21aca | 3365 | |
30667bf3 AM |
3366 | if (sym_sec != NULL |
3367 | && sym_sec->output_section != NULL | |
3368 | && ! bfd_is_abs_section (sym_sec)) | |
252b5132 | 3369 | { |
30667bf3 AM |
3370 | indx = elf_section_data (sym_sec->output_section)->dynindx; |
3371 | /* We are turning this relocation into one | |
3372 | against a section symbol, so subtract out the | |
3373 | output section's address but not the offset | |
3374 | of the input section in the output section. */ | |
3375 | outrel.r_addend -= sym_sec->output_section->vma; | |
252b5132 | 3376 | } |
252b5132 | 3377 | |
30667bf3 AM |
3378 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
3379 | } | |
edd21aca | 3380 | |
30667bf3 AM |
3381 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3382 | ((Elf32_External_Rela *) | |
3383 | sreloc->contents | |
3384 | + sreloc->reloc_count)); | |
3385 | ++sreloc->reloc_count; | |
3386 | } | |
3387 | break; | |
edd21aca | 3388 | |
30667bf3 AM |
3389 | default: |
3390 | break; | |
3391 | } | |
252b5132 | 3392 | |
30667bf3 AM |
3393 | r = final_link_relocate (input_section, contents, rel, relocation, |
3394 | info, sym_sec, h); | |
252b5132 | 3395 | |
30667bf3 AM |
3396 | if (r == bfd_reloc_ok) |
3397 | continue; | |
252b5132 | 3398 | |
30667bf3 AM |
3399 | if (h != NULL) |
3400 | sym_name = h->elf.root.root.string; | |
3401 | else | |
3402 | { | |
3403 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
3404 | symtab_hdr->sh_link, | |
3405 | sym->st_name); | |
3406 | if (sym_name == NULL) | |
3407 | return false; | |
3408 | if (*sym_name == '\0') | |
3409 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
3410 | } | |
edd21aca | 3411 | |
30667bf3 | 3412 | howto = elf_hppa_howto_table + r_type; |
252b5132 | 3413 | |
30667bf3 AM |
3414 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported) |
3415 | { | |
3416 | (*_bfd_error_handler) | |
3417 | (_("%s(%s+0x%lx): cannot handle %s for %s"), | |
3418 | bfd_get_filename (input_bfd), | |
3419 | input_section->name, | |
3420 | (long) rel->r_offset, | |
3421 | howto->name, | |
3422 | sym_name); | |
3423 | } | |
3424 | else | |
3425 | { | |
3426 | if (!((*info->callbacks->reloc_overflow) | |
3427 | (info, sym_name, howto->name, (bfd_vma) 0, | |
3428 | input_bfd, input_section, rel->r_offset))) | |
3429 | return false; | |
3430 | } | |
3431 | } | |
edd21aca | 3432 | |
30667bf3 AM |
3433 | return true; |
3434 | } | |
252b5132 | 3435 | |
edd21aca | 3436 | |
30667bf3 AM |
3437 | /* Finish up dynamic symbol handling. We set the contents of various |
3438 | dynamic sections here. */ | |
252b5132 | 3439 | |
30667bf3 AM |
3440 | static boolean |
3441 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) | |
3442 | bfd *output_bfd; | |
3443 | struct bfd_link_info *info; | |
3444 | struct elf_link_hash_entry *h; | |
3445 | Elf_Internal_Sym *sym; | |
3446 | { | |
3447 | struct elf32_hppa_link_hash_table *hplink; | |
3448 | bfd *dynobj; | |
edd21aca | 3449 | |
30667bf3 AM |
3450 | hplink = hppa_link_hash_table (info); |
3451 | dynobj = elf_hash_table (info)->dynobj; | |
3452 | ||
3453 | /* Millicode symbols should not be put in the dynamic | |
3454 | symbol table under any circumstances. */ | |
3455 | if (ELF_ST_TYPE (sym->st_info) == STT_PARISC_MILLI) | |
3456 | h->dynindx = -1; | |
3457 | ||
3458 | if (h->plt.offset != (bfd_vma) -1) | |
3459 | { | |
3460 | bfd_vma value; | |
3461 | Elf_Internal_Rela rel; | |
3462 | ||
3463 | /* This symbol has an entry in the procedure linkage table. Set | |
3464 | it up. | |
3465 | ||
3466 | The format of a plt entry is | |
3467 | <funcaddr> <__gp>. */ | |
3468 | ||
3469 | /* We do not actually care about the value in the PLT entry if | |
3470 | we are creating a shared library and the symbol is still | |
3471 | undefined; We create a dynamic relocation to fill in the | |
3472 | correct value. */ | |
3473 | value = 0; | |
3474 | if (h->root.type == bfd_link_hash_defined | |
3475 | || h->root.type == bfd_link_hash_defweak) | |
3476 | { | |
3477 | value = h->root.u.def.value; | |
3478 | if (h->root.u.def.section->output_section != NULL) | |
3479 | value += (h->root.u.def.section->output_offset | |
3480 | + h->root.u.def.section->output_section->vma); | |
252b5132 | 3481 | } |
edd21aca | 3482 | |
30667bf3 AM |
3483 | bfd_put_32 (hplink->splt->owner, value, |
3484 | hplink->splt->contents + h->plt.offset); | |
3485 | value = elf_gp (hplink->splt->output_section->owner); | |
3486 | bfd_put_32 (hplink->splt->owner, value, | |
3487 | hplink->splt->contents + h->plt.offset + 4); | |
edd21aca | 3488 | |
30667bf3 AM |
3489 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call |
3490 | && h->dynindx != -1) | |
3491 | { | |
3492 | /* Create a dynamic IPLT relocation for this entry. */ | |
3493 | rel.r_offset = (h->plt.offset | |
3494 | + hplink->splt->output_offset | |
3495 | + hplink->splt->output_section->vma); | |
3496 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); | |
3497 | rel.r_addend = 0; | |
3498 | ||
3499 | bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner, | |
3500 | &rel, | |
3501 | ((Elf32_External_Rela *) | |
3502 | hplink->srelplt->contents | |
3503 | + hplink->srelplt->reloc_count)); | |
3504 | hplink->srelplt->reloc_count++; | |
3505 | } | |
3506 | ||
3507 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3508 | { | |
3509 | /* Mark the symbol as undefined, rather than as defined in | |
3510 | the .plt section. Leave the value alone. */ | |
3511 | sym->st_shndx = SHN_UNDEF; | |
3512 | } | |
3513 | } | |
edd21aca | 3514 | |
30667bf3 AM |
3515 | if (h->got.offset != (bfd_vma) -1) |
3516 | { | |
3517 | Elf_Internal_Rela rel; | |
3518 | ||
3519 | /* This symbol has an entry in the global offset table. Set it | |
3520 | up. */ | |
3521 | ||
3522 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) | |
3523 | + hplink->sgot->output_offset | |
3524 | + hplink->sgot->output_section->vma); | |
3525 | ||
3526 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3527 | symbol is defined locally or was forced to be local because | |
3528 | of a version file, we just want to emit a RELATIVE reloc. | |
3529 | The entry in the global offset table will already have been | |
3530 | initialized in the relocate_section function. */ | |
3531 | if (! elf_hash_table (info)->dynamic_sections_created | |
3532 | || (info->shared | |
3533 | && (info->symbolic || h->dynindx == -1) | |
3534 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
3535 | { | |
3536 | rel.r_info = ELF32_R_INFO (0, R_PARISC_SEGREL32); | |
3537 | rel.r_addend = (h->root.u.def.value | |
3538 | + h->root.u.def.section->output_offset | |
3539 | + h->root.u.def.section->output_section->vma); | |
3540 | } | |
3541 | else | |
3542 | { | |
3543 | BFD_ASSERT((h->got.offset & 1) == 0); | |
3544 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
3545 | hplink->sgot->contents + h->got.offset); | |
3546 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); | |
3547 | rel.r_addend = 0; | |
3548 | } | |
edd21aca | 3549 | |
30667bf3 AM |
3550 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
3551 | ((Elf32_External_Rela *) | |
3552 | hplink->srelgot->contents | |
3553 | + hplink->srelgot->reloc_count)); | |
3554 | ++hplink->srelgot->reloc_count; | |
3555 | } | |
edd21aca | 3556 | |
30667bf3 AM |
3557 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
3558 | { | |
3559 | asection *s; | |
3560 | Elf_Internal_Rela rel; | |
3561 | ||
3562 | /* This symbol needs a copy reloc. Set it up. */ | |
3563 | ||
3564 | BFD_ASSERT (h->dynindx != -1 | |
3565 | && (h->root.type == bfd_link_hash_defined | |
3566 | || h->root.type == bfd_link_hash_defweak)); | |
3567 | ||
3568 | s = hplink->srelbss; | |
3569 | ||
3570 | rel.r_offset = (h->root.u.def.value | |
3571 | + h->root.u.def.section->output_offset | |
3572 | + h->root.u.def.section->output_section->vma); | |
3573 | rel.r_addend = 0; | |
3574 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); | |
3575 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
3576 | ((Elf32_External_Rela *) s->contents | |
3577 | + s->reloc_count)); | |
3578 | ++s->reloc_count; | |
3579 | } | |
3580 | ||
3581 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3582 | if (h->root.root.string[0] == '_' | |
3583 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3584 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) | |
3585 | { | |
3586 | sym->st_shndx = SHN_ABS; | |
3587 | } | |
3588 | ||
3589 | return true; | |
3590 | } | |
3591 | ||
3592 | ||
3593 | /* Finish up the dynamic sections. */ | |
3594 | ||
3595 | static boolean | |
3596 | elf32_hppa_finish_dynamic_sections (output_bfd, info) | |
3597 | bfd *output_bfd; | |
3598 | struct bfd_link_info *info; | |
3599 | { | |
3600 | bfd *dynobj; | |
3601 | struct elf32_hppa_link_hash_table *hplink; | |
3602 | asection *sdyn; | |
3603 | ||
3604 | dynobj = elf_hash_table (info)->dynobj; | |
3605 | hplink = hppa_link_hash_table (info); | |
3606 | ||
3607 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
3608 | ||
3609 | if (elf_hash_table (info)->dynamic_sections_created) | |
3610 | { | |
3611 | Elf32_External_Dyn *dyncon, *dynconend; | |
3612 | ||
3613 | BFD_ASSERT (sdyn != NULL); | |
3614 | ||
3615 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3616 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3617 | for (; dyncon < dynconend; dyncon++) | |
edd21aca | 3618 | { |
30667bf3 AM |
3619 | Elf_Internal_Dyn dyn; |
3620 | asection *s; | |
3621 | ||
3622 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3623 | ||
3624 | switch (dyn.d_tag) | |
3625 | { | |
3626 | default: | |
3627 | break; | |
3628 | ||
3629 | case DT_PLTGOT: | |
3630 | /* Use PLTGOT to set the GOT register. */ | |
3631 | dyn.d_un.d_ptr = elf_gp (output_bfd); | |
3632 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3633 | break; | |
3634 | ||
3635 | case DT_JMPREL: | |
3636 | s = hplink->srelplt; | |
3637 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
3638 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3639 | break; | |
3640 | ||
3641 | case DT_PLTRELSZ: | |
3642 | s = hplink->srelplt; | |
3643 | if (s->_cooked_size != 0) | |
3644 | dyn.d_un.d_val = s->_cooked_size; | |
3645 | else | |
3646 | dyn.d_un.d_val = s->_raw_size; | |
3647 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3648 | break; | |
3649 | } | |
edd21aca | 3650 | } |
252b5132 | 3651 | } |
edd21aca | 3652 | |
30667bf3 AM |
3653 | /* Fill in the first entry in the global offset table. |
3654 | We use it to point to our dynamic section, if we have one. */ | |
3655 | if (hplink->sgot->_raw_size != 0) | |
3656 | { | |
3657 | bfd_put_32 (output_bfd, | |
3658 | (sdyn != NULL | |
3659 | ? sdyn->output_section->vma + sdyn->output_offset | |
3660 | : (bfd_vma) 0), | |
3661 | hplink->sgot->contents); | |
3662 | ||
3663 | /* Set .got entry size. */ | |
3664 | elf_section_data (hplink->sgot->output_section)->this_hdr.sh_entsize = 4; | |
3665 | } | |
3666 | ||
3667 | /* Set plt entry size. */ | |
3668 | if (hplink->splt->_raw_size != 0) | |
3669 | elf_section_data (hplink->splt->output_section)->this_hdr.sh_entsize = 8; | |
3670 | ||
252b5132 | 3671 | return true; |
30667bf3 | 3672 | } |
252b5132 | 3673 | |
edd21aca | 3674 | |
30667bf3 AM |
3675 | /* Called when writing out an object file to decide the type of a |
3676 | symbol. */ | |
3677 | static int | |
3678 | elf32_hppa_elf_get_symbol_type (elf_sym, type) | |
3679 | Elf_Internal_Sym *elf_sym; | |
3680 | int type; | |
3681 | { | |
3682 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
3683 | return STT_PARISC_MILLI; | |
3684 | else | |
3685 | return type; | |
252b5132 RH |
3686 | } |
3687 | ||
30667bf3 | 3688 | |
252b5132 | 3689 | /* Misc BFD support code. */ |
30667bf3 AM |
3690 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name |
3691 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
3692 | #define elf_info_to_howto elf_hppa_info_to_howto | |
3693 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
252b5132 | 3694 | |
252b5132 | 3695 | /* Stuff for the BFD linker. */ |
30667bf3 AM |
3696 | #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link |
3697 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create | |
3698 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook | |
3699 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol | |
3700 | #define elf_backend_check_relocs elf32_hppa_check_relocs | |
3701 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections | |
3702 | #define elf_backend_fake_sections elf_hppa_fake_sections | |
3703 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
3704 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol | |
3705 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections | |
3706 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections | |
3707 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook | |
3708 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook | |
3709 | #define elf_backend_object_p elf32_hppa_object_p | |
3710 | #define elf_backend_final_write_processing elf_hppa_final_write_processing | |
3711 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type | |
3712 | ||
3713 | #define elf_backend_can_gc_sections 1 | |
3714 | #define elf_backend_plt_alignment 2 | |
3715 | #define elf_backend_want_got_plt 0 | |
3716 | #define elf_backend_plt_readonly 0 | |
3717 | #define elf_backend_want_plt_sym 0 | |
3718 | #define elf_backend_got_header_size 4 | |
252b5132 RH |
3719 | |
3720 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec | |
3721 | #define TARGET_BIG_NAME "elf32-hppa" | |
3722 | #define ELF_ARCH bfd_arch_hppa | |
3723 | #define ELF_MACHINE_CODE EM_PARISC | |
3724 | #define ELF_MAXPAGESIZE 0x1000 | |
3725 | ||
3726 | #include "elf32-target.h" |