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252b5132 | 1 | /* BFD back-end for HP PA-RISC ELF files. |
43cbcf28 | 2 | Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
30667bf3 | 5 | Original code by |
252b5132 RH |
6 | Center for Software Science |
7 | Department of Computer Science | |
8 | University of Utah | |
30667bf3 | 9 | Largely rewritten by Alan Modra <alan@linuxcare.com.au> |
252b5132 RH |
10 | |
11 | This file is part of BFD, the Binary File Descriptor library. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #include "bfd.h" | |
28 | #include "sysdep.h" | |
252b5132 RH |
29 | #include "libbfd.h" |
30 | #include "elf-bfd.h" | |
9e103c9c JL |
31 | #include "elf/hppa.h" |
32 | #include "libhppa.h" | |
33 | #include "elf32-hppa.h" | |
34 | #define ARCH_SIZE 32 | |
35 | #include "elf-hppa.h" | |
edd21aca | 36 | #include "elf32-hppa.h" |
9e103c9c | 37 | |
252b5132 | 38 | |
74d1c347 AM |
39 | /* In order to gain some understanding of code in this file without |
40 | knowing all the intricate details of the linker, note the | |
41 | following: | |
42 | ||
43 | Functions named elf32_hppa_* are called by external routines, other | |
44 | functions are only called locally. elf32_hppa_* functions appear | |
45 | in this file more or less in the order in which they are called | |
46 | from external routines. eg. elf32_hppa_check_relocs is called | |
47 | early in the link process, elf32_hppa_finish_dynamic_sections is | |
48 | one of the last functions. */ | |
49 | ||
50 | ||
edd21aca | 51 | /* We use two hash tables to hold information for linking PA ELF objects. |
252b5132 RH |
52 | |
53 | The first is the elf32_hppa_link_hash_table which is derived | |
54 | from the standard ELF linker hash table. We use this as a place to | |
55 | attach other hash tables and static information. | |
56 | ||
57 | The second is the stub hash table which is derived from the | |
58 | base BFD hash table. The stub hash table holds the information | |
30667bf3 AM |
59 | necessary to build the linker stubs during a link. |
60 | ||
61 | There are a number of different stubs generated by the linker. | |
62 | ||
63 | Long branch stub: | |
64 | : ldil LR'X,%r1 | |
65 | : be,n RR'X(%sr4,%r1) | |
66 | ||
67 | PIC long branch stub: | |
68 | : b,l .+8,%r1 | |
69 | : addil L'X - ($PIC_pcrel$0 - 4),%r1 | |
70 | : be,n R'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) | |
71 | ||
72 | Import stub to call shared library routine from normal object file | |
73 | (single sub-space version) | |
74 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
75 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
76 | : bv %r0(%r21) | |
77 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
78 | ||
79 | Import stub to call shared library routine from shared library | |
80 | (single sub-space version) | |
81 | : addil L'ltoff,%r19 ; get procedure entry point | |
82 | : ldw R'ltoff(%r1),%r21 | |
83 | : bv %r0(%r21) | |
84 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
85 | ||
86 | Import stub to call shared library routine from normal object file | |
87 | (multiple sub-space support) | |
88 | : addil L'lt_ptr+ltoff,%dp ; get procedure entry point | |
89 | : ldw R'lt_ptr+ltoff(%r1),%r21 | |
90 | : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
91 | : ldsid (%r21),%r1 | |
92 | : mtsp %r1,%sr0 | |
93 | : be 0(%sr0,%r21) ; branch to target | |
94 | : stw %rp,-24(%sp) ; save rp | |
95 | ||
96 | Import stub to call shared library routine from shared library | |
97 | (multiple sub-space support) | |
98 | : addil L'ltoff,%r19 ; get procedure entry point | |
99 | : ldw R'ltoff(%r1),%r21 | |
100 | : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. | |
101 | : ldsid (%r21),%r1 | |
102 | : mtsp %r1,%sr0 | |
103 | : be 0(%sr0,%r21) ; branch to target | |
104 | : stw %rp,-24(%sp) ; save rp | |
105 | ||
106 | Export stub to return from shared lib routine (multiple sub-space support) | |
107 | One of these is created for each exported procedure in a shared | |
108 | library (and stored in the shared lib). Shared lib routines are | |
109 | called via the first instruction in the export stub so that we can | |
110 | do an inter-space return. Not required for single sub-space. | |
111 | : bl,n X,%rp ; trap the return | |
112 | : nop | |
113 | : ldw -24(%sp),%rp ; restore the original rp | |
114 | : ldsid (%rp),%r1 | |
115 | : mtsp %r1,%sr0 | |
74d1c347 | 116 | : be,n 0(%sr0,%rp) ; inter-space return */ |
30667bf3 AM |
117 | |
118 | #define PLT_ENTRY_SIZE 8 | |
74d1c347 | 119 | #define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE |
30667bf3 AM |
120 | #define GOT_ENTRY_SIZE 4 |
121 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
122 | ||
123 | /* Section name for stubs is the associated section name plus this | |
124 | string. */ | |
125 | #define STUB_SUFFIX ".stub" | |
126 | ||
127 | /* Setting the following non-zero makes all long branch stubs | |
128 | generated during a shared link of the PIC variety. This saves on | |
129 | relocs, but costs one extra instruction per stub. */ | |
130 | #ifndef LONG_BRANCH_PIC_IN_SHLIB | |
131 | #define LONG_BRANCH_PIC_IN_SHLIB 1 | |
132 | #endif | |
252b5132 | 133 | |
74d1c347 AM |
134 | /* Set this non-zero to use import stubs instead of long branch stubs |
135 | where a .plt entry exists for the symbol. This is a fairly useless | |
136 | option as import stubs are bigger than PIC long branch stubs. */ | |
137 | #ifndef LONG_BRANCH_VIA_PLT | |
138 | #define LONG_BRANCH_VIA_PLT 0 | |
139 | #endif | |
140 | ||
30667bf3 AM |
141 | /* We don't need to copy any PC- or GP-relative dynamic relocs into a |
142 | shared object's dynamic section. */ | |
143 | #ifndef RELATIVE_DYNAMIC_RELOCS | |
144 | #define RELATIVE_DYNAMIC_RELOCS 0 | |
145 | #endif | |
146 | ||
147 | ||
148 | enum elf32_hppa_stub_type { | |
149 | hppa_stub_long_branch, | |
150 | hppa_stub_long_branch_shared, | |
151 | hppa_stub_import, | |
152 | hppa_stub_import_shared, | |
153 | hppa_stub_export, | |
154 | hppa_stub_none | |
155 | }; | |
156 | ||
157 | ||
158 | struct elf32_hppa_stub_hash_entry { | |
252b5132 | 159 | |
edd21aca | 160 | /* Base hash table entry structure. */ |
252b5132 RH |
161 | struct bfd_hash_entry root; |
162 | ||
edd21aca AM |
163 | /* The stub section. */ |
164 | asection *stub_sec; | |
165 | ||
30667bf3 AM |
166 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
167 | /* It's associated reloc section. */ | |
168 | asection *reloc_sec; | |
169 | #endif | |
170 | ||
edd21aca | 171 | /* Offset within stub_sec of the beginning of this stub. */ |
30667bf3 | 172 | bfd_vma stub_offset; |
252b5132 RH |
173 | |
174 | /* Given the symbol's value and its section we can determine its final | |
175 | value when building the stubs (so the stub knows where to jump. */ | |
30667bf3 | 176 | bfd_vma target_value; |
252b5132 | 177 | asection *target_section; |
30667bf3 AM |
178 | |
179 | enum elf32_hppa_stub_type stub_type; | |
180 | ||
181 | /* The symbol table entry, if any, that this was derived from. */ | |
182 | struct elf32_hppa_link_hash_entry *h; | |
183 | ||
25f72752 AM |
184 | /* Where this stub is being called from, or, in the case of combined |
185 | stub sections, the first input section in the group. */ | |
186 | asection *id_sec; | |
252b5132 RH |
187 | }; |
188 | ||
30667bf3 AM |
189 | |
190 | struct elf32_hppa_link_hash_entry { | |
191 | ||
192 | struct elf_link_hash_entry elf; | |
193 | ||
194 | /* A pointer to the most recently used stub hash entry against this | |
195 | symbol. */ | |
196 | struct elf32_hppa_stub_hash_entry *stub_cache; | |
197 | ||
198 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
199 | /* Used to track whether we have allocated space for a long branch | |
200 | stub relocation for this symbol in the given section. */ | |
201 | asection *stub_reloc_sec; | |
202 | #endif | |
203 | ||
204 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
205 | /* Used to count relocations for delayed sizing of relocation | |
206 | sections. */ | |
207 | struct elf32_hppa_dyn_reloc_entry { | |
208 | ||
209 | /* Next relocation in the chain. */ | |
210 | struct elf32_hppa_dyn_reloc_entry *next; | |
211 | ||
212 | /* The section in dynobj. */ | |
213 | asection *section; | |
214 | ||
215 | /* Number of relocs copied in this section. */ | |
216 | bfd_size_type count; | |
217 | } *reloc_entries; | |
218 | #endif | |
219 | ||
220 | /* Set during a static link if we detect a function is PIC. */ | |
74d1c347 AM |
221 | unsigned int pic_call:1; |
222 | ||
223 | /* Set if this symbol is used by a plabel reloc. */ | |
224 | unsigned int plabel:1; | |
225 | ||
226 | /* Set if this symbol is an init or fini function and thus should | |
227 | use an absolute reloc. */ | |
228 | unsigned int plt_abs:1; | |
30667bf3 AM |
229 | }; |
230 | ||
231 | ||
232 | struct elf32_hppa_link_hash_table { | |
233 | ||
252b5132 RH |
234 | /* The main hash table. */ |
235 | struct elf_link_hash_table root; | |
236 | ||
237 | /* The stub hash table. */ | |
edd21aca | 238 | struct bfd_hash_table stub_hash_table; |
252b5132 | 239 | |
30667bf3 AM |
240 | /* Linker stub bfd. */ |
241 | bfd *stub_bfd; | |
242 | ||
243 | /* Whether we support multiple sub-spaces for shared libs. */ | |
244 | boolean multi_subspace; | |
245 | ||
246 | /* Linker call-backs. */ | |
247 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
248 | void (*layout_sections_again) PARAMS ((void)); | |
249 | ||
25f72752 AM |
250 | /* Array to keep track of which stub sections have been created, and |
251 | information on stub grouping. */ | |
252 | struct map_stub { | |
253 | /* This is the section to which stubs in the group will be | |
254 | attached. */ | |
255 | asection *link_sec; | |
256 | /* The stub section. */ | |
257 | asection *stub_sec; | |
30667bf3 | 258 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
25f72752 AM |
259 | /* The stub section's reloc section. */ |
260 | asection *reloc_sec; | |
30667bf3 | 261 | #endif |
25f72752 | 262 | } *stub_group; |
30667bf3 | 263 | |
30667bf3 AM |
264 | /* Short-cuts to get to dynamic linker sections. */ |
265 | asection *sgot; | |
266 | asection *srelgot; | |
267 | asection *splt; | |
268 | asection *srelplt; | |
269 | asection *sdynbss; | |
270 | asection *srelbss; | |
252b5132 RH |
271 | }; |
272 | ||
252b5132 | 273 | |
30667bf3 AM |
274 | /* Various hash macros and functions. */ |
275 | #define hppa_link_hash_table(p) \ | |
edd21aca | 276 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
252b5132 | 277 | |
30667bf3 AM |
278 | #define hppa_stub_hash_lookup(table, string, create, copy) \ |
279 | ((struct elf32_hppa_stub_hash_entry *) \ | |
280 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
281 | ||
282 | static struct bfd_hash_entry *stub_hash_newfunc | |
283 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
edd21aca | 284 | |
30667bf3 | 285 | static struct bfd_hash_entry *hppa_link_hash_newfunc |
edd21aca | 286 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 RH |
287 | |
288 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create | |
289 | PARAMS ((bfd *)); | |
290 | ||
252b5132 | 291 | |
30667bf3 AM |
292 | /* Stub handling functions. */ |
293 | static char *hppa_stub_name | |
294 | PARAMS ((const asection *, const asection *, | |
295 | const struct elf32_hppa_link_hash_entry *, | |
296 | const Elf_Internal_Rela *)); | |
edd21aca | 297 | |
30667bf3 AM |
298 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry |
299 | PARAMS ((const asection *, const asection *, | |
300 | struct elf32_hppa_link_hash_entry *, | |
25f72752 AM |
301 | const Elf_Internal_Rela *, |
302 | struct elf32_hppa_link_hash_table *)); | |
edd21aca | 303 | |
30667bf3 | 304 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub |
25f72752 | 305 | PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *)); |
30667bf3 AM |
306 | |
307 | static enum elf32_hppa_stub_type hppa_type_of_stub | |
308 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
309 | struct elf32_hppa_link_hash_entry *, bfd_vma)); | |
310 | ||
311 | static boolean hppa_build_one_stub | |
312 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
313 | ||
314 | static boolean hppa_size_one_stub | |
315 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
316 | ||
317 | ||
318 | /* BFD and elf backend functions. */ | |
319 | static boolean elf32_hppa_object_p PARAMS ((bfd *)); | |
252b5132 | 320 | |
edd21aca AM |
321 | static boolean elf32_hppa_add_symbol_hook |
322 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
323 | const char **, flagword *, asection **, bfd_vma *)); | |
252b5132 | 324 | |
30667bf3 AM |
325 | static boolean elf32_hppa_create_dynamic_sections |
326 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 | 327 | |
30667bf3 AM |
328 | static boolean elf32_hppa_check_relocs |
329 | PARAMS ((bfd *, struct bfd_link_info *, | |
330 | asection *, const Elf_Internal_Rela *)); | |
331 | ||
332 | static asection *elf32_hppa_gc_mark_hook | |
333 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
334 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
335 | ||
336 | static boolean elf32_hppa_gc_sweep_hook | |
337 | PARAMS ((bfd *, struct bfd_link_info *, | |
338 | asection *, const Elf_Internal_Rela *)); | |
339 | ||
74d1c347 AM |
340 | static void elf32_hppa_hide_symbol |
341 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
342 | ||
30667bf3 AM |
343 | static boolean elf32_hppa_adjust_dynamic_symbol |
344 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
345 | ||
346 | static boolean hppa_handle_PIC_calls | |
347 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
348 | ||
74d1c347 AM |
349 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
350 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
351 | static boolean hppa_discard_copies |
352 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
353 | #endif | |
354 | ||
d5c73c2f AM |
355 | static boolean clobber_millicode_symbols |
356 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); | |
357 | ||
30667bf3 AM |
358 | static boolean elf32_hppa_size_dynamic_sections |
359 | PARAMS ((bfd *, struct bfd_link_info *)); | |
360 | ||
361 | static bfd_reloc_status_type final_link_relocate | |
362 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, | |
25f72752 | 363 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *, |
30667bf3 AM |
364 | struct elf32_hppa_link_hash_entry *)); |
365 | ||
366 | static boolean elf32_hppa_relocate_section | |
367 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
368 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
369 | ||
370 | static boolean elf32_hppa_finish_dynamic_symbol | |
371 | PARAMS ((bfd *, struct bfd_link_info *, | |
372 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
373 | ||
374 | static boolean elf32_hppa_finish_dynamic_sections | |
375 | PARAMS ((bfd *, struct bfd_link_info *)); | |
376 | ||
377 | static int elf32_hppa_elf_get_symbol_type | |
378 | PARAMS ((Elf_Internal_Sym *, int)); | |
252b5132 RH |
379 | |
380 | ||
252b5132 RH |
381 | /* Assorted hash table functions. */ |
382 | ||
383 | /* Initialize an entry in the stub hash table. */ | |
384 | ||
385 | static struct bfd_hash_entry * | |
30667bf3 | 386 | stub_hash_newfunc (entry, table, string) |
252b5132 RH |
387 | struct bfd_hash_entry *entry; |
388 | struct bfd_hash_table *table; | |
389 | const char *string; | |
390 | { | |
391 | struct elf32_hppa_stub_hash_entry *ret; | |
392 | ||
393 | ret = (struct elf32_hppa_stub_hash_entry *) entry; | |
394 | ||
395 | /* Allocate the structure if it has not already been allocated by a | |
396 | subclass. */ | |
397 | if (ret == NULL) | |
30667bf3 AM |
398 | { |
399 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
400 | bfd_hash_allocate (table, | |
401 | sizeof (struct elf32_hppa_stub_hash_entry))); | |
402 | if (ret == NULL) | |
403 | return NULL; | |
404 | } | |
252b5132 RH |
405 | |
406 | /* Call the allocation method of the superclass. */ | |
407 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
408 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
409 | ||
410 | if (ret) | |
411 | { | |
412 | /* Initialize the local fields. */ | |
edd21aca | 413 | ret->stub_sec = NULL; |
30667bf3 AM |
414 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
415 | ret->reloc_sec = NULL; | |
416 | #endif | |
417 | ret->stub_offset = 0; | |
252b5132 RH |
418 | ret->target_value = 0; |
419 | ret->target_section = NULL; | |
30667bf3 AM |
420 | ret->stub_type = hppa_stub_long_branch; |
421 | ret->h = NULL; | |
25f72752 | 422 | ret->id_sec = NULL; |
30667bf3 AM |
423 | } |
424 | ||
425 | return (struct bfd_hash_entry *) ret; | |
426 | } | |
427 | ||
428 | ||
429 | /* Initialize an entry in the link hash table. */ | |
430 | ||
431 | static struct bfd_hash_entry * | |
432 | hppa_link_hash_newfunc (entry, table, string) | |
433 | struct bfd_hash_entry *entry; | |
434 | struct bfd_hash_table *table; | |
435 | const char *string; | |
436 | { | |
437 | struct elf32_hppa_link_hash_entry *ret; | |
438 | ||
439 | ret = (struct elf32_hppa_link_hash_entry *) entry; | |
440 | ||
441 | /* Allocate the structure if it has not already been allocated by a | |
442 | subclass. */ | |
443 | if (ret == NULL) | |
444 | { | |
445 | ret = ((struct elf32_hppa_link_hash_entry *) | |
446 | bfd_hash_allocate (table, | |
447 | sizeof (struct elf32_hppa_link_hash_entry))); | |
448 | if (ret == NULL) | |
449 | return NULL; | |
450 | } | |
451 | ||
452 | /* Call the allocation method of the superclass. */ | |
453 | ret = ((struct elf32_hppa_link_hash_entry *) | |
454 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
455 | table, string)); | |
456 | ||
457 | if (ret) | |
458 | { | |
459 | /* Initialize the local fields. */ | |
460 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
461 | ret->stub_reloc_sec = NULL; | |
462 | #endif | |
463 | ret->stub_cache = NULL; | |
464 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
465 | ret->reloc_entries = NULL; | |
466 | #endif | |
467 | ret->pic_call = 0; | |
74d1c347 AM |
468 | ret->plabel = 0; |
469 | ret->plt_abs = 0; | |
252b5132 RH |
470 | } |
471 | ||
472 | return (struct bfd_hash_entry *) ret; | |
473 | } | |
474 | ||
30667bf3 | 475 | |
252b5132 RH |
476 | /* Create the derived linker hash table. The PA ELF port uses the derived |
477 | hash table to keep information specific to the PA ELF linker (without | |
478 | using static variables). */ | |
479 | ||
480 | static struct bfd_link_hash_table * | |
481 | elf32_hppa_link_hash_table_create (abfd) | |
482 | bfd *abfd; | |
483 | { | |
484 | struct elf32_hppa_link_hash_table *ret; | |
485 | ||
edd21aca | 486 | ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret))); |
252b5132 RH |
487 | if (ret == NULL) |
488 | return NULL; | |
edd21aca | 489 | |
30667bf3 | 490 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) |
252b5132 RH |
491 | { |
492 | bfd_release (abfd, ret); | |
493 | return NULL; | |
494 | } | |
edd21aca AM |
495 | |
496 | /* Init the stub hash table too. */ | |
30667bf3 | 497 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) |
edd21aca AM |
498 | return NULL; |
499 | ||
30667bf3 AM |
500 | ret->stub_bfd = NULL; |
501 | ret->multi_subspace = 0; | |
502 | ret->add_stub_section = NULL; | |
503 | ret->layout_sections_again = NULL; | |
25f72752 | 504 | ret->stub_group = NULL; |
30667bf3 AM |
505 | ret->sgot = NULL; |
506 | ret->srelgot = NULL; | |
507 | ret->splt = NULL; | |
508 | ret->srelplt = NULL; | |
509 | ret->sdynbss = NULL; | |
510 | ret->srelbss = NULL; | |
252b5132 RH |
511 | |
512 | return &ret->root.root; | |
513 | } | |
514 | ||
30667bf3 AM |
515 | |
516 | /* Build a name for an entry in the stub hash table. */ | |
517 | ||
edd21aca | 518 | static char * |
30667bf3 | 519 | hppa_stub_name (input_section, sym_sec, hash, rel) |
edd21aca | 520 | const asection *input_section; |
30667bf3 AM |
521 | const asection *sym_sec; |
522 | const struct elf32_hppa_link_hash_entry *hash; | |
523 | const Elf_Internal_Rela *rel; | |
edd21aca AM |
524 | { |
525 | char *stub_name; | |
74d1c347 | 526 | size_t len; |
edd21aca | 527 | |
30667bf3 AM |
528 | if (hash) |
529 | { | |
530 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
531 | stub_name = bfd_malloc (len); | |
532 | if (stub_name != NULL) | |
533 | { | |
534 | sprintf (stub_name, "%08x_%s+%x", | |
535 | input_section->id & 0xffffffff, | |
536 | hash->elf.root.root.string, | |
537 | (int) rel->r_addend & 0xffffffff); | |
538 | } | |
539 | } | |
540 | else | |
edd21aca | 541 | { |
30667bf3 AM |
542 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
543 | stub_name = bfd_malloc (len); | |
544 | if (stub_name != NULL) | |
545 | { | |
546 | sprintf (stub_name, "%08x_%x:%x+%x", | |
547 | input_section->id & 0xffffffff, | |
548 | sym_sec->id & 0xffffffff, | |
549 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
550 | (int) rel->r_addend & 0xffffffff); | |
551 | } | |
edd21aca AM |
552 | } |
553 | return stub_name; | |
554 | } | |
252b5132 | 555 | |
edd21aca | 556 | |
30667bf3 AM |
557 | /* Look up an entry in the stub hash. Stub entries are cached because |
558 | creating the stub name takes a bit of time. */ | |
559 | ||
560 | static struct elf32_hppa_stub_hash_entry * | |
25f72752 | 561 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink) |
30667bf3 AM |
562 | const asection *input_section; |
563 | const asection *sym_sec; | |
564 | struct elf32_hppa_link_hash_entry *hash; | |
565 | const Elf_Internal_Rela *rel; | |
25f72752 | 566 | struct elf32_hppa_link_hash_table *hplink; |
252b5132 | 567 | { |
30667bf3 | 568 | struct elf32_hppa_stub_hash_entry *stub_entry; |
25f72752 AM |
569 | const asection *id_sec; |
570 | ||
571 | /* If this input section is part of a group of sections sharing one | |
572 | stub section, then use the id of the first section in the group. | |
573 | Stub names need to include a section id, as there may well be | |
574 | more than one stub used to reach say, printf, and we need to | |
575 | distinguish between them. */ | |
576 | id_sec = hplink->stub_group[input_section->id].link_sec; | |
edd21aca | 577 | |
30667bf3 AM |
578 | if (hash != NULL && hash->stub_cache != NULL |
579 | && hash->stub_cache->h == hash | |
25f72752 | 580 | && hash->stub_cache->id_sec == id_sec) |
edd21aca | 581 | { |
30667bf3 AM |
582 | stub_entry = hash->stub_cache; |
583 | } | |
584 | else | |
585 | { | |
30667bf3 | 586 | char *stub_name; |
edd21aca | 587 | |
25f72752 | 588 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel); |
30667bf3 AM |
589 | if (stub_name == NULL) |
590 | return NULL; | |
edd21aca | 591 | |
25f72752 AM |
592 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, |
593 | stub_name, false, false); | |
30667bf3 AM |
594 | if (stub_entry == NULL) |
595 | { | |
596 | if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak) | |
597 | (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"), | |
598 | bfd_get_filename (input_section->owner), | |
599 | input_section->name, | |
600 | (long) rel->r_offset, | |
601 | stub_name); | |
602 | } | |
603 | else | |
604 | { | |
605 | if (hash != NULL) | |
606 | hash->stub_cache = stub_entry; | |
607 | } | |
608 | ||
609 | free (stub_name); | |
edd21aca | 610 | } |
30667bf3 AM |
611 | |
612 | return stub_entry; | |
613 | } | |
614 | ||
615 | ||
616 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
617 | stub entry are initialised. */ | |
618 | ||
619 | static struct elf32_hppa_stub_hash_entry * | |
25f72752 | 620 | hppa_add_stub (stub_name, section, hplink) |
30667bf3 AM |
621 | const char *stub_name; |
622 | asection *section; | |
25f72752 | 623 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 | 624 | { |
25f72752 | 625 | asection *link_sec; |
30667bf3 | 626 | asection *stub_sec; |
30667bf3 | 627 | struct elf32_hppa_stub_hash_entry *stub_entry; |
edd21aca | 628 | |
25f72752 AM |
629 | link_sec = hplink->stub_group[section->id].link_sec; |
630 | stub_sec = hplink->stub_group[section->id].stub_sec; | |
30667bf3 | 631 | if (stub_sec == NULL) |
edd21aca | 632 | { |
25f72752 | 633 | stub_sec = hplink->stub_group[link_sec->id].stub_sec; |
30667bf3 AM |
634 | if (stub_sec == NULL) |
635 | { | |
74d1c347 | 636 | size_t len; |
30667bf3 AM |
637 | char *s_name; |
638 | ||
25f72752 | 639 | len = strlen (link_sec->name) + sizeof (STUB_SUFFIX); |
30667bf3 AM |
640 | s_name = bfd_alloc (hplink->stub_bfd, len); |
641 | if (s_name == NULL) | |
642 | return NULL; | |
643 | ||
25f72752 | 644 | strcpy (s_name, link_sec->name); |
30667bf3 | 645 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); |
25f72752 | 646 | stub_sec = (*hplink->add_stub_section) (s_name, link_sec); |
30667bf3 AM |
647 | if (stub_sec == NULL) |
648 | return NULL; | |
25f72752 | 649 | hplink->stub_group[link_sec->id].stub_sec = stub_sec; |
30667bf3 | 650 | } |
25f72752 | 651 | hplink->stub_group[section->id].stub_sec = stub_sec; |
edd21aca | 652 | } |
252b5132 | 653 | |
30667bf3 AM |
654 | /* Enter this entry into the linker stub hash table. */ |
655 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name, | |
656 | true, false); | |
657 | if (stub_entry == NULL) | |
658 | { | |
659 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
660 | bfd_get_filename (section->owner), | |
661 | stub_name); | |
662 | return NULL; | |
edd21aca AM |
663 | } |
664 | ||
30667bf3 AM |
665 | stub_entry->stub_sec = stub_sec; |
666 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
25f72752 | 667 | stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec; |
30667bf3 AM |
668 | #endif |
669 | stub_entry->stub_offset = 0; | |
25f72752 | 670 | stub_entry->id_sec = link_sec; |
30667bf3 | 671 | return stub_entry; |
edd21aca AM |
672 | } |
673 | ||
edd21aca | 674 | |
30667bf3 AM |
675 | /* Determine the type of stub needed, if any, for a call. */ |
676 | ||
677 | static enum elf32_hppa_stub_type | |
678 | hppa_type_of_stub (input_sec, rel, hash, destination) | |
679 | asection *input_sec; | |
680 | const Elf_Internal_Rela *rel; | |
681 | struct elf32_hppa_link_hash_entry *hash; | |
682 | bfd_vma destination; | |
edd21aca | 683 | { |
edd21aca | 684 | bfd_vma location; |
30667bf3 AM |
685 | bfd_vma branch_offset; |
686 | bfd_vma max_branch_offset; | |
687 | unsigned int r_type; | |
688 | ||
689 | if (hash != NULL | |
690 | && (((hash->elf.root.type == bfd_link_hash_defined | |
74d1c347 AM |
691 | || hash->elf.root.type == bfd_link_hash_defweak) |
692 | && hash->elf.root.u.def.section->output_section == NULL) | |
693 | || (hash->elf.root.type == bfd_link_hash_defweak | |
694 | && hash->elf.dynindx != -1 | |
695 | && hash->elf.plt.offset != (bfd_vma) -1) | |
30667bf3 AM |
696 | || hash->elf.root.type == bfd_link_hash_undefweak |
697 | || hash->elf.root.type == bfd_link_hash_undefined | |
698 | || hash->pic_call)) | |
699 | { | |
700 | /* If output_section is NULL, then it's a symbol defined in a | |
701 | shared library. We will need an import stub. Decide between | |
74d1c347 AM |
702 | hppa_stub_import and hppa_stub_import_shared later. For |
703 | shared links we need stubs for undefined or weak syms too; | |
704 | They will presumably be resolved by the dynamic linker. */ | |
30667bf3 AM |
705 | return hppa_stub_import; |
706 | } | |
edd21aca | 707 | |
30667bf3 AM |
708 | /* Determine where the call point is. */ |
709 | location = (input_sec->output_offset | |
710 | + input_sec->output_section->vma | |
711 | + rel->r_offset); | |
edd21aca | 712 | |
30667bf3 AM |
713 | branch_offset = destination - location - 8; |
714 | r_type = ELF32_R_TYPE (rel->r_info); | |
edd21aca | 715 | |
30667bf3 AM |
716 | /* Determine if a long branch stub is needed. parisc branch offsets |
717 | are relative to the second instruction past the branch, ie. +8 | |
718 | bytes on from the branch instruction location. The offset is | |
719 | signed and counts in units of 4 bytes. */ | |
720 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
edd21aca | 721 | { |
30667bf3 AM |
722 | max_branch_offset = (1 << (17-1)) << 2; |
723 | } | |
724 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
725 | { | |
726 | max_branch_offset = (1 << (12-1)) << 2; | |
727 | } | |
25f72752 | 728 | else /* R_PARISC_PCREL22F. */ |
30667bf3 AM |
729 | { |
730 | max_branch_offset = (1 << (22-1)) << 2; | |
edd21aca AM |
731 | } |
732 | ||
30667bf3 | 733 | if (branch_offset + max_branch_offset >= 2*max_branch_offset) |
edd21aca | 734 | { |
74d1c347 | 735 | #if LONG_BRANCH_VIA_PLT |
30667bf3 AM |
736 | if (hash != NULL |
737 | && hash->elf.dynindx != -1 | |
738 | && hash->elf.plt.offset != (bfd_vma) -1) | |
739 | { | |
740 | /* If we are doing a shared link and find we need a long | |
741 | branch stub, then go via the .plt if possible. */ | |
742 | return hppa_stub_import; | |
743 | } | |
744 | else | |
745 | #endif | |
746 | return hppa_stub_long_branch; | |
747 | } | |
748 | return hppa_stub_none; | |
749 | } | |
edd21aca | 750 | |
edd21aca | 751 | |
30667bf3 AM |
752 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
753 | IN_ARG contains the link info pointer. */ | |
edd21aca | 754 | |
30667bf3 AM |
755 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ |
756 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ | |
edd21aca | 757 | |
30667bf3 AM |
758 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */ |
759 | #define ADDIL_R1 0x28200000 /* addil L'XXX,%r1,%r1 */ | |
760 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ | |
252b5132 | 761 | |
30667bf3 AM |
762 | #define ADDIL_DP 0x2b600000 /* addil L'XXX,%dp,%r1 */ |
763 | #define LDW_R1_R21 0x48350000 /* ldw R'XXX(%sr0,%r1),%r21 */ | |
764 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ | |
765 | #define LDW_R1_R19 0x48330000 /* ldw R'XXX(%sr0,%r1),%r19 */ | |
252b5132 | 766 | |
30667bf3 AM |
767 | #define ADDIL_R19 0x2a600000 /* addil L'XXX,%r19,%r1 */ |
768 | #define LDW_R1_DP 0x483b0000 /* ldw R'XXX(%sr0,%r1),%dp */ | |
edd21aca | 769 | |
30667bf3 AM |
770 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ |
771 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ | |
772 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ | |
773 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ | |
edd21aca | 774 | |
30667bf3 AM |
775 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ |
776 | #define NOP 0x08000240 /* nop */ | |
777 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ | |
778 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ | |
779 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ | |
edd21aca | 780 | |
30667bf3 AM |
781 | #ifndef R19_STUBS |
782 | #define R19_STUBS 1 | |
783 | #endif | |
edd21aca | 784 | |
30667bf3 AM |
785 | #if R19_STUBS |
786 | #define LDW_R1_DLT LDW_R1_R19 | |
787 | #else | |
788 | #define LDW_R1_DLT LDW_R1_DP | |
789 | #endif | |
edd21aca | 790 | |
30667bf3 AM |
791 | static boolean |
792 | hppa_build_one_stub (gen_entry, in_arg) | |
793 | struct bfd_hash_entry *gen_entry; | |
794 | PTR in_arg; | |
795 | { | |
796 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
797 | struct bfd_link_info *info; | |
798 | struct elf32_hppa_link_hash_table *hplink; | |
799 | asection *stub_sec; | |
800 | bfd *stub_bfd; | |
801 | bfd_byte *loc; | |
802 | bfd_vma sym_value; | |
74d1c347 AM |
803 | bfd_vma insn; |
804 | int val; | |
30667bf3 | 805 | int size; |
edd21aca | 806 | |
30667bf3 AM |
807 | /* Massage our args to the form they really have. */ |
808 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
809 | info = (struct bfd_link_info *) in_arg; | |
810 | ||
811 | hplink = hppa_link_hash_table (info); | |
812 | stub_sec = stub_entry->stub_sec; | |
edd21aca | 813 | |
30667bf3 | 814 | /* Make a note of the offset within the stubs for this entry. */ |
74d1c347 | 815 | stub_entry->stub_offset = stub_sec->_raw_size; |
30667bf3 | 816 | loc = stub_sec->contents + stub_entry->stub_offset; |
252b5132 | 817 | |
30667bf3 AM |
818 | stub_bfd = stub_sec->owner; |
819 | ||
820 | switch (stub_entry->stub_type) | |
821 | { | |
822 | case hppa_stub_long_branch: | |
823 | /* Create the long branch. A long branch is formed with "ldil" | |
824 | loading the upper bits of the target address into a register, | |
825 | then branching with "be" which adds in the lower bits. | |
826 | The "be" has its delay slot nullified. */ | |
827 | sym_value = (stub_entry->target_value | |
828 | + stub_entry->target_section->output_offset | |
829 | + stub_entry->target_section->output_section->vma); | |
830 | ||
74d1c347 AM |
831 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel); |
832 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); | |
30667bf3 AM |
833 | bfd_put_32 (stub_bfd, insn, loc); |
834 | ||
74d1c347 AM |
835 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2; |
836 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
837 | bfd_put_32 (stub_bfd, insn, loc + 4); |
838 | ||
839 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
840 | if (info->shared) | |
841 | { | |
842 | /* Output a dynamic relocation for this stub. We only | |
843 | output one PCREL21L reloc per stub, trusting that the | |
844 | dynamic linker will also fix the implied PCREL17R for the | |
845 | second instruction. PCREL21L dynamic relocs had better | |
846 | never be emitted for some other purpose... */ | |
847 | asection *srel; | |
848 | Elf_Internal_Rela outrel; | |
849 | ||
850 | if (stub_entry->h == NULL) | |
edd21aca AM |
851 | { |
852 | (*_bfd_error_handler) | |
30667bf3 AM |
853 | (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"), |
854 | bfd_get_filename (stub_entry->target_section->owner), | |
855 | stub_sec->name, | |
856 | (long) stub_entry->stub_offset, | |
857 | stub_entry->root.string); | |
858 | bfd_set_error (bfd_error_bad_value); | |
859 | return false; | |
edd21aca AM |
860 | } |
861 | ||
30667bf3 AM |
862 | srel = stub_entry->reloc_sec; |
863 | if (srel == NULL) | |
edd21aca AM |
864 | { |
865 | (*_bfd_error_handler) | |
30667bf3 AM |
866 | (_("Could not find relocation section for %s"), |
867 | stub_sec->name); | |
868 | bfd_set_error (bfd_error_bad_value); | |
869 | return false; | |
edd21aca | 870 | } |
252b5132 | 871 | |
30667bf3 AM |
872 | outrel.r_offset = (stub_entry->stub_offset |
873 | + stub_sec->output_offset | |
874 | + stub_sec->output_section->vma); | |
875 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L); | |
876 | outrel.r_addend = sym_value; | |
877 | bfd_elf32_swap_reloca_out (stub_sec->output_section->owner, | |
878 | &outrel, | |
879 | ((Elf32_External_Rela *) | |
880 | srel->contents + srel->reloc_count)); | |
881 | ++srel->reloc_count; | |
252b5132 | 882 | } |
30667bf3 AM |
883 | #endif |
884 | size = 8; | |
edd21aca AM |
885 | break; |
886 | ||
30667bf3 AM |
887 | case hppa_stub_long_branch_shared: |
888 | /* Branches are relative. This is where we are going to. */ | |
889 | sym_value = (stub_entry->target_value | |
890 | + stub_entry->target_section->output_offset | |
891 | + stub_entry->target_section->output_section->vma); | |
892 | ||
893 | /* And this is where we are coming from, more or less. */ | |
894 | sym_value -= (stub_entry->stub_offset | |
895 | + stub_sec->output_offset | |
896 | + stub_sec->output_section->vma); | |
897 | ||
74d1c347 AM |
898 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); |
899 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lsel); | |
900 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); | |
30667bf3 AM |
901 | bfd_put_32 (stub_bfd, insn, loc + 4); |
902 | ||
74d1c347 AM |
903 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rsel) >> 2; |
904 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
905 | bfd_put_32 (stub_bfd, insn, loc + 8); |
906 | size = 12; | |
907 | break; | |
edd21aca | 908 | |
30667bf3 AM |
909 | case hppa_stub_import: |
910 | case hppa_stub_import_shared: | |
911 | sym_value = (stub_entry->h->elf.plt.offset | |
912 | + hplink->splt->output_offset | |
913 | + hplink->splt->output_section->vma | |
914 | - elf_gp (hplink->splt->output_section->owner)); | |
915 | ||
916 | insn = ADDIL_DP; | |
917 | #if R19_STUBS | |
918 | if (stub_entry->stub_type == hppa_stub_import_shared) | |
919 | insn = ADDIL_R19; | |
920 | #endif | |
74d1c347 AM |
921 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lsel), |
922 | insn = hppa_rebuild_insn ((int) insn, val, 21); | |
30667bf3 | 923 | bfd_put_32 (stub_bfd, insn, loc); |
edd21aca | 924 | |
74d1c347 AM |
925 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rsel); |
926 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); | |
30667bf3 | 927 | bfd_put_32 (stub_bfd, insn, loc + 4); |
252b5132 | 928 | |
30667bf3 AM |
929 | if (hplink->multi_subspace) |
930 | { | |
74d1c347 AM |
931 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rsel); |
932 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); | |
30667bf3 | 933 | bfd_put_32 (stub_bfd, insn, loc + 8); |
252b5132 | 934 | |
74d1c347 AM |
935 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); |
936 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
937 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); | |
938 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); | |
252b5132 | 939 | |
30667bf3 AM |
940 | size = 28; |
941 | } | |
942 | else | |
943 | { | |
74d1c347 AM |
944 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); |
945 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rsel); | |
946 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); | |
30667bf3 | 947 | bfd_put_32 (stub_bfd, insn, loc + 12); |
252b5132 | 948 | |
30667bf3 AM |
949 | size = 16; |
950 | } | |
252b5132 | 951 | |
30667bf3 AM |
952 | if (!info->shared |
953 | && stub_entry->h != NULL | |
954 | && stub_entry->h->pic_call) | |
252b5132 | 955 | { |
30667bf3 AM |
956 | /* Build the .plt entry needed to call a PIC function from |
957 | statically linked code. We don't need any relocs. */ | |
958 | bfd *dynobj; | |
959 | struct elf32_hppa_link_hash_entry *eh; | |
960 | bfd_vma value; | |
252b5132 | 961 | |
74d1c347 | 962 | dynobj = hplink->root.dynobj; |
30667bf3 | 963 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; |
252b5132 | 964 | |
30667bf3 AM |
965 | BFD_ASSERT (eh->elf.root.type == bfd_link_hash_defined |
966 | || eh->elf.root.type == bfd_link_hash_defweak); | |
252b5132 | 967 | |
30667bf3 AM |
968 | value = (eh->elf.root.u.def.value |
969 | + eh->elf.root.u.def.section->output_offset | |
970 | + eh->elf.root.u.def.section->output_section->vma); | |
252b5132 | 971 | |
30667bf3 | 972 | /* Fill in the entry in the procedure linkage table. |
252b5132 | 973 | |
30667bf3 | 974 | The format of a plt entry is |
74d1c347 AM |
975 | <funcaddr> |
976 | <__gp>. */ | |
252b5132 | 977 | |
30667bf3 AM |
978 | bfd_put_32 (hplink->splt->owner, value, |
979 | hplink->splt->contents + eh->elf.plt.offset); | |
980 | value = elf_gp (hplink->splt->output_section->owner); | |
981 | bfd_put_32 (hplink->splt->owner, value, | |
982 | hplink->splt->contents + eh->elf.plt.offset + 4); | |
252b5132 | 983 | } |
30667bf3 | 984 | break; |
252b5132 | 985 | |
30667bf3 AM |
986 | case hppa_stub_export: |
987 | /* Branches are relative. This is where we are going to. */ | |
988 | sym_value = (stub_entry->target_value | |
989 | + stub_entry->target_section->output_offset | |
990 | + stub_entry->target_section->output_section->vma); | |
252b5132 | 991 | |
30667bf3 AM |
992 | /* And this is where we are coming from. */ |
993 | sym_value -= (stub_entry->stub_offset | |
994 | + stub_sec->output_offset | |
995 | + stub_sec->output_section->vma); | |
edd21aca | 996 | |
30667bf3 AM |
997 | if (sym_value - 8 + 0x40000 >= 0x80000) |
998 | { | |
edd21aca | 999 | (*_bfd_error_handler) |
30667bf3 AM |
1000 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), |
1001 | bfd_get_filename (stub_entry->target_section->owner), | |
1002 | stub_sec->name, | |
1003 | (long) stub_entry->stub_offset, | |
1004 | stub_entry->root.string); | |
1005 | bfd_set_error (bfd_error_bad_value); | |
edd21aca | 1006 | return false; |
252b5132 | 1007 | } |
30667bf3 | 1008 | |
74d1c347 AM |
1009 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; |
1010 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17); | |
30667bf3 AM |
1011 | bfd_put_32 (stub_bfd, insn, loc); |
1012 | ||
74d1c347 AM |
1013 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); |
1014 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); | |
1015 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); | |
1016 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
1017 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); | |
30667bf3 AM |
1018 | |
1019 | /* Point the function symbol at the stub. */ | |
1020 | stub_entry->h->elf.root.u.def.section = stub_sec; | |
74d1c347 | 1021 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size; |
30667bf3 AM |
1022 | |
1023 | size = 24; | |
1024 | break; | |
1025 | ||
1026 | default: | |
1027 | BFD_FAIL (); | |
1028 | return false; | |
252b5132 RH |
1029 | } |
1030 | ||
74d1c347 | 1031 | stub_sec->_raw_size += size; |
252b5132 RH |
1032 | return true; |
1033 | } | |
1034 | ||
30667bf3 AM |
1035 | #undef LDIL_R1 |
1036 | #undef BE_SR4_R1 | |
1037 | #undef BL_R1 | |
1038 | #undef ADDIL_R1 | |
1039 | #undef DEPI_R1 | |
1040 | #undef ADDIL_DP | |
1041 | #undef LDW_R1_R21 | |
1042 | #undef LDW_R1_DLT | |
1043 | #undef LDW_R1_R19 | |
1044 | #undef ADDIL_R19 | |
1045 | #undef LDW_R1_DP | |
1046 | #undef LDSID_R21_R1 | |
1047 | #undef MTSP_R1 | |
1048 | #undef BE_SR0_R21 | |
1049 | #undef STW_RP | |
1050 | #undef BV_R0_R21 | |
1051 | #undef BL_RP | |
1052 | #undef NOP | |
1053 | #undef LDW_RP | |
1054 | #undef LDSID_RP_R1 | |
1055 | #undef BE_SR0_RP | |
252b5132 | 1056 | |
edd21aca | 1057 | |
30667bf3 AM |
1058 | /* As above, but don't actually build the stub. Just bump offset so |
1059 | we know stub section sizes. */ | |
1060 | ||
1061 | static boolean | |
1062 | hppa_size_one_stub (gen_entry, in_arg) | |
1063 | struct bfd_hash_entry *gen_entry; | |
1064 | PTR in_arg; | |
252b5132 | 1065 | { |
30667bf3 AM |
1066 | struct elf32_hppa_stub_hash_entry *stub_entry; |
1067 | struct elf32_hppa_link_hash_table *hplink; | |
1068 | int size; | |
1069 | ||
1070 | /* Massage our args to the form they really have. */ | |
1071 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
1072 | hplink = (struct elf32_hppa_link_hash_table *) in_arg; | |
1073 | ||
1074 | if (stub_entry->stub_type == hppa_stub_long_branch) | |
74d1c347 AM |
1075 | { |
1076 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1077 | if (stub_entry->reloc_sec != NULL) | |
1078 | stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela); | |
1079 | #endif | |
1080 | size = 8; | |
1081 | } | |
30667bf3 AM |
1082 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared) |
1083 | size = 12; | |
1084 | else if (stub_entry->stub_type == hppa_stub_export) | |
1085 | size = 24; | |
74d1c347 | 1086 | else /* hppa_stub_import or hppa_stub_import_shared. */ |
252b5132 | 1087 | { |
30667bf3 AM |
1088 | if (hplink->multi_subspace) |
1089 | size = 28; | |
1090 | else | |
1091 | size = 16; | |
1092 | } | |
252b5132 | 1093 | |
74d1c347 | 1094 | stub_entry->stub_sec->_raw_size += size; |
30667bf3 AM |
1095 | return true; |
1096 | } | |
252b5132 | 1097 | |
252b5132 | 1098 | |
30667bf3 AM |
1099 | /* Return nonzero if ABFD represents an HPPA ELF32 file. |
1100 | Additionally we set the default architecture and machine. */ | |
1101 | ||
1102 | static boolean | |
1103 | elf32_hppa_object_p (abfd) | |
1104 | bfd *abfd; | |
1105 | { | |
1106 | unsigned int flags = elf_elfheader (abfd)->e_flags; | |
252b5132 | 1107 | |
30667bf3 AM |
1108 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
1109 | { | |
1110 | case EFA_PARISC_1_0: | |
1111 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
1112 | case EFA_PARISC_1_1: | |
1113 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
1114 | case EFA_PARISC_2_0: | |
1115 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
1116 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
1117 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
1118 | } | |
1119 | return true; | |
252b5132 RH |
1120 | } |
1121 | ||
30667bf3 | 1122 | |
252b5132 RH |
1123 | /* Undo the generic ELF code's subtraction of section->vma from the |
1124 | value of each external symbol. */ | |
1125 | ||
1126 | static boolean | |
1127 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
5f771d47 ILT |
1128 | bfd *abfd ATTRIBUTE_UNUSED; |
1129 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1130 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; | |
1131 | const char **namep ATTRIBUTE_UNUSED; | |
1132 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1133 | asection **secp; |
1134 | bfd_vma *valp; | |
1135 | { | |
1136 | *valp += (*secp)->vma; | |
1137 | return true; | |
1138 | } | |
1139 | ||
252b5132 | 1140 | |
30667bf3 AM |
1141 | /* Create the .plt and .got sections, and set up our hash table |
1142 | short-cuts to various dynamic sections. */ | |
1143 | ||
1144 | static boolean | |
1145 | elf32_hppa_create_dynamic_sections (abfd, info) | |
1146 | bfd *abfd; | |
1147 | struct bfd_link_info *info; | |
252b5132 | 1148 | { |
30667bf3 AM |
1149 | flagword flags; |
1150 | asection *s; | |
1151 | struct elf32_hppa_link_hash_table *hplink; | |
edd21aca | 1152 | |
30667bf3 AM |
1153 | /* Don't try to create the .plt and .got twice. */ |
1154 | hplink = hppa_link_hash_table (info); | |
1155 | if (hplink->splt != NULL) | |
1156 | return true; | |
edd21aca | 1157 | |
30667bf3 AM |
1158 | /* Call the generic code to do most of the work. */ |
1159 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1160 | return false; | |
252b5132 | 1161 | |
30667bf3 AM |
1162 | /* Our .plt just contains pointers. I suppose we should be using |
1163 | .plt.got but .plt.got doesn't make too much sense without a .plt | |
1164 | section. Set the flags to say the .plt isn't executable. */ | |
1165 | s = bfd_get_section_by_name (abfd, ".plt"); | |
1166 | flags = bfd_get_section_flags (abfd, s); | |
1167 | if (! bfd_set_section_flags (abfd, s, flags & ~SEC_CODE)) | |
1168 | return false; | |
1169 | hplink->splt = s; | |
1170 | hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
1171 | ||
1172 | hplink->sgot = bfd_get_section_by_name (abfd, ".got"); | |
1173 | hplink->srelgot = bfd_make_section (abfd, ".rela.got"); | |
1174 | if (hplink->srelgot == NULL | |
1175 | || ! bfd_set_section_flags (abfd, hplink->srelgot, | |
1176 | (SEC_ALLOC | |
1177 | | SEC_LOAD | |
1178 | | SEC_HAS_CONTENTS | |
1179 | | SEC_IN_MEMORY | |
1180 | | SEC_LINKER_CREATED | |
1181 | | SEC_READONLY)) | |
1182 | || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2)) | |
1183 | return false; | |
edd21aca | 1184 | |
30667bf3 AM |
1185 | hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
1186 | hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
1187 | ||
1188 | return true; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | /* Look through the relocs for a section during the first phase, and | |
1193 | allocate space in the global offset table or procedure linkage | |
1194 | table. At this point we haven't necessarily read all the input | |
1195 | files. */ | |
252b5132 RH |
1196 | |
1197 | static boolean | |
30667bf3 AM |
1198 | elf32_hppa_check_relocs (abfd, info, sec, relocs) |
1199 | bfd *abfd; | |
1200 | struct bfd_link_info *info; | |
1201 | asection *sec; | |
1202 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1203 | { |
30667bf3 AM |
1204 | bfd *dynobj; |
1205 | Elf_Internal_Shdr *symtab_hdr; | |
1206 | struct elf_link_hash_entry **sym_hashes; | |
1207 | bfd_signed_vma *local_got_refcounts; | |
1208 | const Elf_Internal_Rela *rel; | |
1209 | const Elf_Internal_Rela *rel_end; | |
1210 | struct elf32_hppa_link_hash_table *hplink; | |
1211 | asection *sreloc; | |
1212 | asection *stubreloc; | |
1213 | ||
1214 | if (info->relocateable) | |
1215 | return true; | |
1216 | ||
1217 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 1218 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1219 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1220 | sym_hashes = elf_sym_hashes (abfd); | |
1221 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1222 | sreloc = NULL; | |
1223 | stubreloc = NULL; | |
1224 | ||
1225 | rel_end = relocs + sec->reloc_count; | |
1226 | for (rel = relocs; rel < rel_end; rel++) | |
1227 | { | |
1228 | enum { | |
1229 | NEED_GOT = 1, | |
1230 | NEED_PLT = 2, | |
1231 | NEED_DYNREL = 4, | |
1232 | #if LONG_BRANCH_PIC_IN_SHLIB | |
74d1c347 | 1233 | NEED_STUBREL = 0, /* We won't be needing them in this case. */ |
30667bf3 | 1234 | #else |
74d1c347 | 1235 | NEED_STUBREL = 8, |
30667bf3 | 1236 | #endif |
74d1c347 | 1237 | PLT_PLABEL = 16 |
30667bf3 | 1238 | }; |
edd21aca | 1239 | |
30667bf3 AM |
1240 | unsigned int r_symndx, r_type; |
1241 | struct elf32_hppa_link_hash_entry *h; | |
1242 | int need_entry; | |
252b5132 | 1243 | |
30667bf3 | 1244 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 | 1245 | |
30667bf3 AM |
1246 | if (r_symndx < symtab_hdr->sh_info) |
1247 | h = NULL; | |
1248 | else | |
1249 | h = ((struct elf32_hppa_link_hash_entry *) | |
1250 | sym_hashes[r_symndx - symtab_hdr->sh_info]); | |
252b5132 | 1251 | |
30667bf3 | 1252 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1253 | |
30667bf3 AM |
1254 | switch (r_type) |
1255 | { | |
1256 | case R_PARISC_DLTIND14F: | |
1257 | case R_PARISC_DLTIND14R: | |
1258 | case R_PARISC_DLTIND21L: | |
1259 | /* This symbol requires a global offset table entry. */ | |
1260 | need_entry = NEED_GOT; | |
1261 | ||
1262 | /* Mark this section as containing PIC code. */ | |
1263 | sec->flags |= SEC_HAS_GOT_REF; | |
1264 | break; | |
1265 | ||
1266 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ | |
1267 | case R_PARISC_PLABEL21L: | |
1268 | case R_PARISC_PLABEL32: | |
74d1c347 AM |
1269 | /* If the addend is non-zero, we break badly. */ |
1270 | BFD_ASSERT (rel->r_addend == 0); | |
1271 | ||
1272 | /* If we are creating a shared library, then we need to | |
1273 | create a PLT entry for all PLABELs, because PLABELs with | |
1274 | local symbols may be passed via a pointer to another | |
1275 | object. Additionally, output a dynamic relocation | |
1276 | pointing to the PLT entry. */ | |
1277 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; | |
30667bf3 AM |
1278 | break; |
1279 | ||
1280 | case R_PARISC_PCREL12F: | |
1281 | case R_PARISC_PCREL17C: | |
1282 | case R_PARISC_PCREL17F: | |
1283 | case R_PARISC_PCREL22F: | |
1284 | /* Handle calls, and function pointers as they might need to | |
1285 | go through the .plt, and might require long branch stubs. */ | |
1286 | if (h == NULL) | |
1287 | { | |
1288 | /* We know local syms won't need a .plt entry, and if | |
1289 | they need a long branch stub we can't guarantee that | |
1290 | we can reach the stub. So just flag an error later | |
1291 | if we're doing a shared link and find we need a long | |
1292 | branch stub. */ | |
1293 | continue; | |
1294 | } | |
1295 | else | |
1296 | { | |
1297 | /* Global symbols will need a .plt entry if they remain | |
1298 | global, and in most cases won't need a long branch | |
1299 | stub. Unfortunately, we have to cater for the case | |
1300 | where a symbol is forced local by versioning, or due | |
1301 | to symbolic linking, and we lose the .plt entry. */ | |
1302 | need_entry = NEED_PLT | NEED_STUBREL; | |
1303 | } | |
1304 | break; | |
1305 | ||
1306 | case R_PARISC_SEGBASE: /* Used to set segment base. */ | |
1307 | case R_PARISC_SEGREL32: /* Relative reloc. */ | |
1308 | case R_PARISC_PCREL14F: /* PC relative load/store. */ | |
1309 | case R_PARISC_PCREL14R: | |
1310 | case R_PARISC_PCREL17R: /* External branches. */ | |
1311 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */ | |
1312 | /* We don't need to propagate the relocation if linking a | |
1313 | shared object since these are section relative. */ | |
1314 | continue; | |
1315 | ||
1316 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ | |
1317 | case R_PARISC_DPREL14R: | |
1318 | case R_PARISC_DPREL21L: | |
1319 | if (info->shared) | |
1320 | { | |
1321 | (*_bfd_error_handler) | |
1322 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
1323 | bfd_get_filename (abfd), | |
1324 | elf_hppa_howto_table[r_type].name); | |
1325 | bfd_set_error (bfd_error_bad_value); | |
1326 | return false; | |
1327 | } | |
1328 | /* Fall through. */ | |
1329 | ||
1330 | case R_PARISC_DIR17F: /* Used for external branches. */ | |
1331 | case R_PARISC_DIR17R: | |
1332 | case R_PARISC_DIR14R: /* Used for load/store from absolute locn. */ | |
1333 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */ | |
1334 | #if 1 | |
1335 | /* Help debug shared library creation. Any of the above | |
1336 | relocs can be used in shared libs, but they may cause | |
1337 | pages to become unshared. */ | |
1338 | if (info->shared) | |
1339 | { | |
1340 | (*_bfd_error_handler) | |
1341 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"), | |
1342 | bfd_get_filename (abfd), | |
1343 | elf_hppa_howto_table[r_type].name); | |
1344 | } | |
1345 | /* Fall through. */ | |
1346 | #endif | |
1347 | ||
1348 | case R_PARISC_DIR32: /* .word, PARISC.unwind relocs. */ | |
1349 | /* We may want to output a dynamic relocation later. */ | |
1350 | need_entry = NEED_DYNREL; | |
1351 | break; | |
1352 | ||
1353 | /* This relocation describes the C++ object vtable hierarchy. | |
1354 | Reconstruct it for later use during GC. */ | |
1355 | case R_PARISC_GNU_VTINHERIT: | |
1356 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, | |
1357 | &h->elf, rel->r_offset)) | |
1358 | return false; | |
1359 | continue; | |
1360 | ||
1361 | /* This relocation describes which C++ vtable entries are actually | |
1362 | used. Record for later use during GC. */ | |
1363 | case R_PARISC_GNU_VTENTRY: | |
1364 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, | |
1365 | &h->elf, rel->r_offset)) | |
1366 | return false; | |
1367 | continue; | |
1368 | ||
1369 | default: | |
1370 | continue; | |
1371 | } | |
1372 | ||
1373 | /* Now carry out our orders. */ | |
1374 | if (need_entry & NEED_GOT) | |
1375 | { | |
1376 | /* Allocate space for a GOT entry, as well as a dynamic | |
25f72752 | 1377 | relocation for this entry. */ |
30667bf3 | 1378 | if (dynobj == NULL) |
74d1c347 | 1379 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1380 | |
1381 | if (hplink->sgot == NULL) | |
1382 | { | |
1383 | if (! elf32_hppa_create_dynamic_sections (dynobj, info)) | |
1384 | return false; | |
1385 | } | |
1386 | ||
1387 | if (h != NULL) | |
1388 | { | |
1389 | if (h->elf.got.refcount == -1) | |
1390 | { | |
1391 | h->elf.got.refcount = 1; | |
1392 | ||
1393 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1394 | if (h->elf.dynindx == -1) | |
1395 | { | |
1396 | if (! bfd_elf32_link_record_dynamic_symbol (info, | |
1397 | &h->elf)) | |
1398 | return false; | |
1399 | } | |
1400 | ||
1401 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1402 | hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
1403 | } | |
1404 | else | |
1405 | h->elf.got.refcount += 1; | |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | /* This is a global offset table entry for a local symbol. */ | |
1410 | if (local_got_refcounts == NULL) | |
1411 | { | |
1412 | size_t size; | |
1413 | ||
74d1c347 AM |
1414 | /* Allocate space for local got offsets and local |
1415 | plt offsets. Done this way to save polluting | |
1416 | elf_obj_tdata with another target specific | |
1417 | pointer. */ | |
1418 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
30667bf3 AM |
1419 | local_got_refcounts = ((bfd_signed_vma *) |
1420 | bfd_alloc (abfd, size)); | |
1421 | if (local_got_refcounts == NULL) | |
1422 | return false; | |
1423 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1424 | memset (local_got_refcounts, -1, size); | |
1425 | } | |
1426 | if (local_got_refcounts[r_symndx] == -1) | |
1427 | { | |
1428 | local_got_refcounts[r_symndx] = 1; | |
1429 | ||
1430 | hplink->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1431 | if (info->shared) | |
1432 | { | |
1433 | /* If we are generating a shared object, we need to | |
1434 | output a reloc so that the dynamic linker can | |
1435 | adjust this GOT entry (because the address | |
1436 | the shared library is loaded at is not fixed). */ | |
1437 | hplink->srelgot->_raw_size += | |
1438 | sizeof (Elf32_External_Rela); | |
1439 | } | |
1440 | } | |
1441 | else | |
1442 | local_got_refcounts[r_symndx] += 1; | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | if (need_entry & NEED_PLT) | |
1447 | { | |
1448 | /* If we are creating a shared library, and this is a reloc | |
1449 | against a weak symbol or a global symbol in a dynamic | |
1450 | object, then we will be creating an import stub and a | |
1451 | .plt entry for the symbol. Similarly, on a normal link | |
1452 | to symbols defined in a dynamic object we'll need the | |
1453 | import stub and a .plt entry. We don't know yet whether | |
1454 | the symbol is defined or not, so make an entry anyway and | |
1455 | clean up later in adjust_dynamic_symbol. */ | |
1456 | if ((sec->flags & SEC_ALLOC) != 0) | |
1457 | { | |
74d1c347 | 1458 | if (h != NULL) |
30667bf3 | 1459 | { |
74d1c347 AM |
1460 | if (h->elf.plt.refcount == -1) |
1461 | { | |
1462 | h->elf.plt.refcount = 1; | |
1463 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
1464 | } | |
1465 | else | |
1466 | h->elf.plt.refcount += 1; | |
1467 | ||
1468 | /* If this .plt entry is for a plabel, we need an | |
1469 | extra word for ld.so. adjust_dynamic_symbol will | |
1470 | also keep the entry even if it appears to be | |
1471 | local. */ | |
1472 | if (need_entry & PLT_PLABEL) | |
1473 | h->plabel = 1; | |
1474 | } | |
1475 | else if (need_entry & PLT_PLABEL) | |
1476 | { | |
1477 | int indx; | |
1478 | ||
1479 | if (local_got_refcounts == NULL) | |
1480 | { | |
1481 | size_t size; | |
1482 | ||
1483 | /* Allocate space for local got offsets and local | |
1484 | plt offsets. */ | |
1485 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma); | |
1486 | local_got_refcounts = ((bfd_signed_vma *) | |
1487 | bfd_alloc (abfd, size)); | |
1488 | if (local_got_refcounts == NULL) | |
1489 | return false; | |
1490 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1491 | memset (local_got_refcounts, -1, size); | |
1492 | } | |
1493 | indx = r_symndx + symtab_hdr->sh_info; | |
1494 | if (local_got_refcounts[indx] == -1) | |
1495 | local_got_refcounts[indx] = 1; | |
1496 | else | |
1497 | local_got_refcounts[indx] += 1; | |
30667bf3 | 1498 | } |
30667bf3 AM |
1499 | } |
1500 | } | |
1501 | ||
1502 | if (need_entry & (NEED_DYNREL | NEED_STUBREL)) | |
1503 | { | |
1504 | /* Flag this symbol as having a non-got, non-plt reference | |
1505 | so that we generate copy relocs if it turns out to be | |
1506 | dynamic. */ | |
1507 | if (h != NULL) | |
1508 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
1509 | ||
1510 | /* If we are creating a shared library then we need to copy | |
1511 | the reloc into the shared library. However, if we are | |
1512 | linking with -Bsymbolic, we need only copy absolute | |
1513 | relocs or relocs against symbols that are not defined in | |
1514 | an object we are including in the link. PC- or DP- or | |
1515 | DLT-relative relocs against any local sym or global sym | |
1516 | with DEF_REGULAR set, can be discarded. At this point we | |
1517 | have not seen all the input files, so it is possible that | |
1518 | DEF_REGULAR is not set now but will be set later (it is | |
1519 | never cleared). We account for that possibility below by | |
1520 | storing information in the reloc_entries field of the | |
1521 | hash table entry. | |
1522 | ||
1523 | A similar situation to the -Bsymbolic case occurs when | |
1524 | creating shared libraries and symbol visibility changes | |
1525 | render the symbol local. | |
1526 | ||
1527 | As it turns out, all the relocs we will be creating here | |
1528 | are absolute, so we cannot remove them on -Bsymbolic | |
1529 | links or visibility changes anyway. A STUB_REL reloc | |
1530 | is absolute too, as in that case it is the reloc in the | |
1531 | stub we will be creating, rather than copying the PCREL | |
1532 | reloc in the branch. */ | |
1533 | if ((sec->flags & SEC_ALLOC) != 0 | |
1534 | && info->shared | |
1535 | #if RELATIVE_DYNAMIC_RELOCS | |
1536 | && (!info->symbolic | |
1537 | || is_absolute_reloc (r_type) | |
1538 | || (h != NULL | |
1539 | && ((h->elf.elf_link_hash_flags | |
1540 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
1541 | || h->elf.root.type == bfd_link_hash_defweak))) | |
1542 | #endif | |
1543 | ) | |
1544 | { | |
1545 | boolean doit; | |
1546 | asection *srel; | |
1547 | ||
1548 | srel = sreloc; | |
1549 | if ((need_entry & NEED_STUBREL)) | |
1550 | srel = stubreloc; | |
1551 | ||
1552 | /* Create a reloc section in dynobj and make room for | |
1553 | this reloc. */ | |
1554 | if (srel == NULL) | |
1555 | { | |
1556 | char *name; | |
1557 | ||
1558 | if (dynobj == NULL) | |
74d1c347 | 1559 | hplink->root.dynobj = dynobj = abfd; |
30667bf3 AM |
1560 | |
1561 | name = bfd_elf_string_from_elf_section | |
1562 | (abfd, | |
1563 | elf_elfheader (abfd)->e_shstrndx, | |
1564 | elf_section_data (sec)->rel_hdr.sh_name); | |
1565 | if (name == NULL) | |
1566 | { | |
1567 | (*_bfd_error_handler) | |
1568 | (_("Could not find relocation section for %s"), | |
1569 | sec->name); | |
1570 | bfd_set_error (bfd_error_bad_value); | |
1571 | return false; | |
1572 | } | |
1573 | ||
1574 | if ((need_entry & NEED_STUBREL)) | |
1575 | { | |
74d1c347 | 1576 | size_t len = strlen (name) + sizeof (STUB_SUFFIX); |
30667bf3 AM |
1577 | char *newname = bfd_malloc (len); |
1578 | ||
1579 | if (newname == NULL) | |
1580 | return false; | |
1581 | strcpy (newname, name); | |
1582 | strcpy (newname + len - sizeof (STUB_SUFFIX), | |
1583 | STUB_SUFFIX); | |
1584 | name = newname; | |
1585 | } | |
1586 | ||
1587 | srel = bfd_get_section_by_name (dynobj, name); | |
1588 | if (srel == NULL) | |
1589 | { | |
1590 | flagword flags; | |
1591 | ||
1592 | srel = bfd_make_section (dynobj, name); | |
1593 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1594 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1595 | if ((sec->flags & SEC_ALLOC) != 0) | |
1596 | flags |= SEC_ALLOC | SEC_LOAD; | |
1597 | if (srel == NULL | |
1598 | || !bfd_set_section_flags (dynobj, srel, flags) | |
1599 | || !bfd_set_section_alignment (dynobj, srel, 2)) | |
1600 | return false; | |
1601 | } | |
1602 | else if ((need_entry & NEED_STUBREL)) | |
1603 | free (name); | |
1604 | ||
1605 | if ((need_entry & NEED_STUBREL)) | |
1606 | stubreloc = srel; | |
1607 | else | |
1608 | sreloc = srel; | |
1609 | } | |
1610 | ||
1611 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
1612 | /* If this is a function call, we only need one dynamic | |
1613 | reloc for the stub as all calls to a particular | |
1614 | function will go through the same stub. Actually, a | |
1615 | long branch stub needs two relocations, but we count | |
1616 | on some intelligence on the part of the dynamic | |
1617 | linker. */ | |
1618 | if ((need_entry & NEED_STUBREL)) | |
1619 | { | |
1620 | doit = h->stub_reloc_sec != stubreloc; | |
1621 | h->stub_reloc_sec = stubreloc; | |
1622 | } | |
1623 | else | |
1624 | #endif | |
1625 | doit = 1; | |
1626 | ||
1627 | if (doit) | |
1628 | { | |
1629 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1630 | ||
1631 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS | |
1632 | /* Keep track of relocations we have entered for | |
1633 | this global symbol, so that we can discard them | |
1634 | later if necessary. */ | |
1635 | if (h != NULL | |
1636 | && (0 | |
1637 | #if RELATIVE_DYNAMIC_RELOCS | |
1638 | || ! is_absolute_reloc (rtype) | |
1639 | #endif | |
1640 | || (need_entry & NEED_STUBREL))) | |
1641 | { | |
1642 | struct elf32_hppa_dyn_reloc_entry *p; | |
252b5132 | 1643 | |
30667bf3 AM |
1644 | for (p = h->reloc_entries; p != NULL; p = p->next) |
1645 | if (p->section == srel) | |
1646 | break; | |
edd21aca | 1647 | |
30667bf3 AM |
1648 | if (p == NULL) |
1649 | { | |
1650 | p = ((struct elf32_hppa_dyn_reloc_entry *) | |
1651 | bfd_alloc (dynobj, sizeof *p)); | |
1652 | if (p == NULL) | |
1653 | return false; | |
1654 | p->next = h->reloc_entries; | |
1655 | h->reloc_entries = p; | |
1656 | p->section = srel; | |
1657 | p->count = 0; | |
1658 | } | |
edd21aca | 1659 | |
30667bf3 AM |
1660 | /* NEED_STUBREL and NEED_DYNREL are never both |
1661 | set. Leave the count at zero for the | |
1662 | NEED_STUBREL case as we only ever have one | |
1663 | stub reloc per section per symbol, and this | |
1664 | simplifies code in hppa_discard_copies. */ | |
1665 | if (! (need_entry & NEED_STUBREL)) | |
1666 | ++p->count; | |
1667 | } | |
1668 | #endif | |
1669 | } | |
1670 | } | |
1671 | } | |
1672 | } | |
edd21aca AM |
1673 | |
1674 | return true; | |
1675 | } | |
1676 | ||
30667bf3 AM |
1677 | |
1678 | /* Return the section that should be marked against garbage collection | |
1679 | for a given relocation. */ | |
1680 | ||
1681 | static asection * | |
1682 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) | |
1683 | bfd *abfd; | |
1684 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1685 | Elf_Internal_Rela *rel; | |
1686 | struct elf_link_hash_entry *h; | |
1687 | Elf_Internal_Sym *sym; | |
1688 | { | |
1689 | if (h != NULL) | |
1690 | { | |
1691 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1692 | { | |
1693 | case R_PARISC_GNU_VTINHERIT: | |
1694 | case R_PARISC_GNU_VTENTRY: | |
1695 | break; | |
1696 | ||
1697 | default: | |
1698 | switch (h->root.type) | |
1699 | { | |
1700 | case bfd_link_hash_defined: | |
1701 | case bfd_link_hash_defweak: | |
1702 | return h->root.u.def.section; | |
1703 | ||
1704 | case bfd_link_hash_common: | |
1705 | return h->root.u.c.p->section; | |
1706 | ||
1707 | default: | |
1708 | break; | |
1709 | } | |
1710 | } | |
1711 | } | |
1712 | else | |
1713 | { | |
1714 | if (!(elf_bad_symtab (abfd) | |
1715 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) | |
1716 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) | |
1717 | && sym->st_shndx != SHN_COMMON)) | |
1718 | { | |
1719 | return bfd_section_from_elf_index (abfd, sym->st_shndx); | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | return NULL; | |
1724 | } | |
1725 | ||
1726 | ||
1727 | /* Update the got and plt entry reference counts for the section being | |
1728 | removed. */ | |
edd21aca AM |
1729 | |
1730 | static boolean | |
30667bf3 AM |
1731 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) |
1732 | bfd *abfd; | |
1733 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1734 | asection *sec; | |
1735 | const Elf_Internal_Rela *relocs; | |
edd21aca | 1736 | { |
30667bf3 AM |
1737 | Elf_Internal_Shdr *symtab_hdr; |
1738 | struct elf_link_hash_entry **sym_hashes; | |
1739 | bfd_signed_vma *local_got_refcounts; | |
74d1c347 | 1740 | bfd_signed_vma *local_plt_refcounts; |
30667bf3 AM |
1741 | const Elf_Internal_Rela *rel, *relend; |
1742 | unsigned long r_symndx; | |
1743 | struct elf_link_hash_entry *h; | |
74d1c347 | 1744 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
1745 | bfd *dynobj; |
1746 | asection *sgot; | |
1747 | asection *srelgot; | |
1748 | ||
1749 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1750 | sym_hashes = elf_sym_hashes (abfd); | |
1751 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
74d1c347 AM |
1752 | local_plt_refcounts = local_got_refcounts; |
1753 | if (local_plt_refcounts != NULL) | |
1754 | local_plt_refcounts += symtab_hdr->sh_info; | |
1755 | hplink = hppa_link_hash_table (info); | |
1756 | dynobj = hplink->root.dynobj; | |
30667bf3 AM |
1757 | if (dynobj == NULL) |
1758 | return true; | |
1759 | ||
74d1c347 AM |
1760 | sgot = hplink->sgot; |
1761 | srelgot = hplink->srelgot; | |
30667bf3 AM |
1762 | |
1763 | relend = relocs + sec->reloc_count; | |
1764 | for (rel = relocs; rel < relend; rel++) | |
1765 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1766 | { | |
1767 | case R_PARISC_DLTIND14F: | |
1768 | case R_PARISC_DLTIND14R: | |
1769 | case R_PARISC_DLTIND21L: | |
1770 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1771 | if (r_symndx >= symtab_hdr->sh_info) | |
1772 | { | |
1773 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1774 | if (h->got.refcount > 0) | |
1775 | { | |
1776 | h->got.refcount -= 1; | |
1777 | if (h->got.refcount == 0) | |
1778 | { | |
74d1c347 | 1779 | sgot->_raw_size -= GOT_ENTRY_SIZE; |
30667bf3 AM |
1780 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); |
1781 | } | |
1782 | } | |
1783 | } | |
1784 | else if (local_got_refcounts != NULL) | |
1785 | { | |
1786 | if (local_got_refcounts[r_symndx] > 0) | |
1787 | { | |
1788 | local_got_refcounts[r_symndx] -= 1; | |
1789 | if (local_got_refcounts[r_symndx] == 0) | |
1790 | { | |
74d1c347 | 1791 | sgot->_raw_size -= GOT_ENTRY_SIZE; |
30667bf3 AM |
1792 | if (info->shared) |
1793 | srelgot->_raw_size -= sizeof (Elf32_External_Rela); | |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | break; | |
edd21aca | 1798 | |
30667bf3 AM |
1799 | case R_PARISC_PCREL12F: |
1800 | case R_PARISC_PCREL17C: | |
1801 | case R_PARISC_PCREL17F: | |
1802 | case R_PARISC_PCREL22F: | |
1803 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1804 | if (r_symndx >= symtab_hdr->sh_info) | |
1805 | { | |
1806 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1807 | if (h->plt.refcount > 0) | |
1808 | h->plt.refcount -= 1; | |
1809 | } | |
1810 | break; | |
edd21aca | 1811 | |
74d1c347 AM |
1812 | case R_PARISC_PLABEL14R: |
1813 | case R_PARISC_PLABEL21L: | |
1814 | case R_PARISC_PLABEL32: | |
1815 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1816 | if (r_symndx >= symtab_hdr->sh_info) | |
1817 | { | |
1818 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1819 | if (h->plt.refcount > 0) | |
1820 | h->plt.refcount -= 1; | |
1821 | } | |
1822 | else if (local_plt_refcounts != NULL) | |
1823 | { | |
1824 | if (local_plt_refcounts[r_symndx] > 0) | |
1825 | local_plt_refcounts[r_symndx] -= 1; | |
1826 | } | |
1827 | break; | |
1828 | ||
30667bf3 AM |
1829 | default: |
1830 | break; | |
1831 | } | |
252b5132 | 1832 | |
252b5132 RH |
1833 | return true; |
1834 | } | |
1835 | ||
252b5132 | 1836 | |
74d1c347 AM |
1837 | /* Our own version of hide_symbol, so that we can keep plt entries for |
1838 | plabels. */ | |
1839 | ||
1840 | static void | |
1841 | elf32_hppa_hide_symbol (info, h) | |
1842 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1843 | struct elf_link_hash_entry *h; | |
1844 | { | |
1845 | h->dynindx = -1; | |
1846 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel) | |
1847 | { | |
1848 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1849 | h->plt.offset = (bfd_vma) -1; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | ||
30667bf3 AM |
1854 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1855 | regular object. The current definition is in some section of the | |
1856 | dynamic object, but we're not including those sections. We have to | |
1857 | change the definition to something the rest of the link can | |
1858 | understand. */ | |
252b5132 | 1859 | |
30667bf3 AM |
1860 | static boolean |
1861 | elf32_hppa_adjust_dynamic_symbol (info, h) | |
1862 | struct bfd_link_info *info; | |
1863 | struct elf_link_hash_entry *h; | |
252b5132 | 1864 | { |
30667bf3 AM |
1865 | bfd *dynobj; |
1866 | struct elf32_hppa_link_hash_table *hplink; | |
1867 | asection *s; | |
1868 | ||
30667bf3 | 1869 | hplink = hppa_link_hash_table (info); |
74d1c347 | 1870 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
1871 | |
1872 | /* If this is a function, put it in the procedure linkage table. We | |
1873 | will fill in the contents of the procedure linkage table later, | |
1874 | when we know the address of the .got section. */ | |
1875 | if (h->type == STT_FUNC | |
1876 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1877 | { | |
1878 | if (h->plt.refcount <= 0 | |
1879 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1880 | && h->root.type != bfd_link_hash_defweak | |
74d1c347 | 1881 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel |
30667bf3 AM |
1882 | && (!info->shared || info->symbolic))) |
1883 | { | |
1884 | /* The .plt entry is not needed when: | |
1885 | a) Garbage collection has removed all references to the | |
1886 | symbol, or | |
1887 | b) We know for certain the symbol is defined in this | |
74d1c347 AM |
1888 | object, and it's not a weak definition, nor is the symbol |
1889 | used by a plabel relocation. Either this object is the | |
1890 | application or we are doing a shared symbolic link. */ | |
1891 | ||
1892 | /* As a special sop to the hppa ABI, we keep a .plt entry | |
1893 | for functions in sections containing PIC code. */ | |
30667bf3 AM |
1894 | if (!info->shared |
1895 | && h->plt.refcount > 0 | |
1896 | && (h->root.type == bfd_link_hash_defined | |
1897 | || h->root.type == bfd_link_hash_defweak) | |
1898 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) | |
1899 | { | |
1900 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; | |
1901 | } | |
1902 | else | |
1903 | { | |
1904 | h->plt.offset = (bfd_vma) -1; | |
1905 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1906 | return true; | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /* Make an entry in the .plt section. */ | |
1911 | s = hplink->splt; | |
1912 | h->plt.offset = s->_raw_size; | |
74d1c347 AM |
1913 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE |
1914 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
1915 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1916 | { | |
1917 | /* Add some extra space for the dynamic linker to use. */ | |
1918 | s->_raw_size += PLABEL_PLT_ENTRY_SIZE; | |
1919 | } | |
1920 | else | |
1921 | s->_raw_size += PLT_ENTRY_SIZE; | |
30667bf3 AM |
1922 | |
1923 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
1924 | { | |
1925 | /* Make sure this symbol is output as a dynamic symbol. */ | |
74d1c347 AM |
1926 | if (h->dynindx == -1 |
1927 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
30667bf3 AM |
1928 | { |
1929 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
1930 | return false; | |
1931 | } | |
1932 | ||
1933 | /* We also need to make an entry in the .rela.plt section. */ | |
1934 | s = hplink->srelplt; | |
1935 | s->_raw_size += sizeof (Elf32_External_Rela); | |
1936 | } | |
1937 | return true; | |
1938 | } | |
edd21aca | 1939 | |
30667bf3 AM |
1940 | /* If this is a weak symbol, and there is a real definition, the |
1941 | processor independent code will have arranged for us to see the | |
1942 | real definition first, and we can just use the same value. */ | |
1943 | if (h->weakdef != NULL) | |
edd21aca | 1944 | { |
30667bf3 AM |
1945 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
1946 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1947 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1948 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1949 | return true; | |
1950 | } | |
edd21aca | 1951 | |
30667bf3 AM |
1952 | /* This is a reference to a symbol defined by a dynamic object which |
1953 | is not a function. */ | |
1954 | ||
1955 | /* If we are creating a shared library, we must presume that the | |
1956 | only references to the symbol are via the global offset table. | |
1957 | For such cases we need not do anything here; the relocations will | |
1958 | be handled correctly by relocate_section. */ | |
1959 | if (info->shared) | |
1960 | return true; | |
1961 | ||
1962 | /* If there are no references to this symbol that do not use the | |
1963 | GOT, we don't need to generate a copy reloc. */ | |
1964 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1965 | return true; | |
1966 | ||
1967 | /* We must allocate the symbol in our .dynbss section, which will | |
1968 | become part of the .bss section of the executable. There will be | |
1969 | an entry for this symbol in the .dynsym section. The dynamic | |
1970 | object will contain position independent code, so all references | |
1971 | from the dynamic object to this symbol will go through the global | |
1972 | offset table. The dynamic linker will use the .dynsym entry to | |
1973 | determine the address it must put in the global offset table, so | |
1974 | both the dynamic object and the regular object will refer to the | |
1975 | same memory location for the variable. */ | |
1976 | ||
1977 | s = hplink->sdynbss; | |
1978 | ||
1979 | /* We must generate a COPY reloc to tell the dynamic linker to | |
1980 | copy the initial value out of the dynamic object and into the | |
1981 | runtime process image. We need to remember the offset into the | |
1982 | .rela.bss section we are going to use. */ | |
1983 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
1984 | { | |
1985 | asection *srel; | |
1986 | ||
1987 | srel = hplink->srelbss; | |
1988 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
1989 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
edd21aca | 1990 | } |
252b5132 | 1991 | |
30667bf3 AM |
1992 | { |
1993 | /* We need to figure out the alignment required for this symbol. I | |
1994 | have no idea how other ELF linkers handle this. */ | |
1995 | unsigned int power_of_two; | |
1996 | ||
1997 | power_of_two = bfd_log2 (h->size); | |
1998 | if (power_of_two > 3) | |
1999 | power_of_two = 3; | |
2000 | ||
2001 | /* Apply the required alignment. */ | |
2002 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
2003 | (bfd_size_type) (1 << power_of_two)); | |
2004 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
2005 | { | |
2006 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
2007 | return false; | |
2008 | } | |
2009 | } | |
2010 | /* Define the symbol as being at this point in the section. */ | |
2011 | h->root.u.def.section = s; | |
2012 | h->root.u.def.value = s->_raw_size; | |
edd21aca | 2013 | |
30667bf3 AM |
2014 | /* Increment the section size to make room for the symbol. */ |
2015 | s->_raw_size += h->size; | |
252b5132 RH |
2016 | |
2017 | return true; | |
2018 | } | |
2019 | ||
252b5132 | 2020 | |
30667bf3 AM |
2021 | /* Called via elf_link_hash_traverse to create .plt entries for an |
2022 | application that uses statically linked PIC functions. Similar to | |
2023 | the first part of elf32_hppa_adjust_dynamic_symbol. */ | |
252b5132 | 2024 | |
30667bf3 AM |
2025 | static boolean |
2026 | hppa_handle_PIC_calls (h, inf) | |
2027 | struct elf_link_hash_entry *h; | |
2028 | PTR inf; | |
252b5132 | 2029 | { |
30667bf3 AM |
2030 | struct bfd_link_info *info; |
2031 | bfd *dynobj; | |
2032 | struct elf32_hppa_link_hash_table *hplink; | |
2033 | asection *s; | |
2034 | ||
2035 | if (! (h->plt.refcount > 0 | |
2036 | && (h->root.type == bfd_link_hash_defined | |
2037 | || h->root.type == bfd_link_hash_defweak) | |
2038 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) | |
252b5132 | 2039 | { |
30667bf3 AM |
2040 | h->plt.offset = (bfd_vma) -1; |
2041 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2042 | return true; | |
252b5132 RH |
2043 | } |
2044 | ||
74d1c347 | 2045 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
30667bf3 | 2046 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; |
edd21aca | 2047 | |
30667bf3 | 2048 | info = (struct bfd_link_info *) inf; |
30667bf3 | 2049 | hplink = hppa_link_hash_table (info); |
74d1c347 | 2050 | dynobj = hplink->root.dynobj; |
edd21aca | 2051 | |
30667bf3 AM |
2052 | /* Make an entry in the .plt section. */ |
2053 | s = hplink->splt; | |
2054 | h->plt.offset = s->_raw_size; | |
2055 | s->_raw_size += PLT_ENTRY_SIZE; | |
2056 | ||
2057 | return true; | |
2058 | } | |
2059 | ||
2060 | ||
74d1c347 AM |
2061 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2062 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2063 | /* This function is called via elf_link_hash_traverse to discard space |
2064 | we allocated for relocs that it turned out we didn't need. */ | |
2065 | ||
2066 | static boolean | |
2067 | hppa_discard_copies (h, inf) | |
2068 | struct elf_link_hash_entry *h; | |
2069 | PTR inf; | |
2070 | { | |
2071 | struct elf32_hppa_dyn_reloc_entry *s; | |
2072 | struct elf32_hppa_link_hash_entry *eh; | |
2073 | struct bfd_link_info *info; | |
2074 | ||
2075 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
2076 | info = (struct bfd_link_info *) inf; | |
2077 | ||
74d1c347 | 2078 | #if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT |
30667bf3 AM |
2079 | /* Handle the stub reloc case. If we have a plt entry for the |
2080 | function, we won't be needing long branch stubs. s->count will | |
2081 | only be zero for stub relocs, which provides a handy way of | |
2082 | flagging these relocs, and means we need do nothing special for | |
2083 | the forced local and symbolic link case. */ | |
2084 | if (eh->stub_reloc_sec != NULL | |
2085 | && eh->elf.plt.offset != (bfd_vma) -1) | |
2086 | { | |
2087 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2088 | if (s->count == 0) | |
2089 | s->section->_raw_size -= sizeof (Elf32_External_Rela); | |
2090 | } | |
2091 | #endif | |
2092 | ||
74d1c347 | 2093 | #if RELATIVE_DYNAMIC_RELOCS |
30667bf3 AM |
2094 | /* If a symbol has been forced local or we have found a regular |
2095 | definition for the symbolic link case, then we won't be needing | |
2096 | any relocs. */ | |
30667bf3 AM |
2097 | if (eh->elf.dynindx == -1 |
2098 | || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
2099 | && eh->elf.root.type != bfd_link_hash_defweak | |
2100 | && info->symbolic)) | |
2101 | { | |
2102 | for (s = eh->reloc_entries; s != NULL; s = s->next) | |
2103 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); | |
2104 | } | |
2105 | #endif | |
2106 | ||
2107 | return true; | |
2108 | } | |
2109 | #endif | |
2110 | ||
2111 | ||
d5c73c2f AM |
2112 | /* This function is called via elf_link_hash_traverse to force |
2113 | millicode symbols local so they do not end up as globals in the | |
2114 | dynamic symbol table. We ought to be able to do this in | |
2115 | adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called | |
2116 | for all dynamic symbols. Arguably, this is a bug in | |
2117 | elf_adjust_dynamic_symbol. */ | |
2118 | ||
2119 | static boolean | |
2120 | clobber_millicode_symbols (h, info) | |
2121 | struct elf_link_hash_entry *h; | |
2122 | struct bfd_link_info *info; | |
2123 | { | |
25f72752 AM |
2124 | /* Note! We only want to remove these from the dynamic symbol |
2125 | table. Therefore we do not set ELF_LINK_FORCED_LOCAL. */ | |
d5c73c2f | 2126 | if (h->type == STT_PARISC_MILLI) |
25f72752 | 2127 | elf32_hppa_hide_symbol(info, h); |
d5c73c2f AM |
2128 | return true; |
2129 | } | |
2130 | ||
2131 | ||
30667bf3 AM |
2132 | /* Set the sizes of the dynamic sections. */ |
2133 | ||
2134 | static boolean | |
2135 | elf32_hppa_size_dynamic_sections (output_bfd, info) | |
2136 | bfd *output_bfd; | |
2137 | struct bfd_link_info *info; | |
2138 | { | |
2139 | struct elf32_hppa_link_hash_table *hplink; | |
2140 | bfd *dynobj; | |
2141 | asection *s; | |
2142 | boolean relocs; | |
2143 | boolean reltext; | |
2144 | ||
2145 | hplink = hppa_link_hash_table (info); | |
74d1c347 | 2146 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
2147 | BFD_ASSERT (dynobj != NULL); |
2148 | ||
74d1c347 | 2149 | if (hplink->root.dynamic_sections_created) |
30667bf3 | 2150 | { |
74d1c347 AM |
2151 | const char *funcname; |
2152 | bfd *i; | |
2153 | ||
30667bf3 AM |
2154 | /* Set the contents of the .interp section to the interpreter. */ |
2155 | if (! info->shared) | |
2156 | { | |
2157 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2158 | BFD_ASSERT (s != NULL); | |
2159 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2160 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2161 | } | |
74d1c347 | 2162 | |
d5c73c2f AM |
2163 | /* Force millicode symbols local. */ |
2164 | elf_link_hash_traverse (&hplink->root, | |
2165 | clobber_millicode_symbols, | |
2166 | info); | |
2167 | ||
74d1c347 AM |
2168 | /* DT_INIT and DT_FINI need a .plt entry. Make sure they have |
2169 | one. */ | |
2170 | funcname = info->init_function; | |
2171 | while (1) | |
2172 | { | |
2173 | if (funcname != NULL) | |
2174 | { | |
2175 | struct elf_link_hash_entry *h; | |
2176 | ||
2177 | h = elf_link_hash_lookup (&hplink->root, | |
2178 | funcname, | |
2179 | false, false, false); | |
2180 | if (h != NULL | |
2181 | && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
2182 | | ELF_LINK_HASH_DEF_REGULAR))) | |
2183 | { | |
2184 | if (h->plt.refcount <= 0) | |
2185 | { | |
2186 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2187 | ||
2188 | /* Make an entry in the .plt section. We know | |
2189 | the function doesn't have a plabel by the | |
25f72752 | 2190 | refcount. */ |
74d1c347 AM |
2191 | s = hplink->splt; |
2192 | h->plt.offset = s->_raw_size; | |
2193 | s->_raw_size += PLT_ENTRY_SIZE; | |
2194 | ||
2195 | /* Make sure this symbol is output as a dynamic | |
2196 | symbol. */ | |
2197 | if (h->dynindx == -1) | |
2198 | { | |
2199 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2200 | return false; | |
2201 | } | |
2202 | ||
2203 | /* Make an entry for the reloc too. */ | |
2204 | s = hplink->srelplt; | |
2205 | s->_raw_size += sizeof (Elf32_External_Rela); | |
2206 | } | |
2207 | ||
2208 | ((struct elf32_hppa_link_hash_entry *) h)->plt_abs = 1; | |
2209 | } | |
2210 | } | |
2211 | if (funcname == info->fini_function) | |
2212 | break; | |
2213 | funcname = info->fini_function; | |
2214 | } | |
2215 | ||
2216 | /* Set up .plt offsets for local plabels. */ | |
2217 | for (i = info->input_bfds; i; i = i->link_next) | |
2218 | { | |
2219 | bfd_signed_vma *local_plt; | |
2220 | bfd_signed_vma *end_local_plt; | |
2221 | bfd_size_type locsymcount; | |
2222 | Elf_Internal_Shdr *symtab_hdr; | |
2223 | ||
2224 | local_plt = elf_local_got_refcounts (i); | |
2225 | if (!local_plt) | |
2226 | continue; | |
2227 | ||
2228 | symtab_hdr = &elf_tdata (i)->symtab_hdr; | |
2229 | locsymcount = symtab_hdr->sh_info; | |
2230 | local_plt += locsymcount; | |
2231 | end_local_plt = local_plt + locsymcount; | |
2232 | ||
2233 | for (; local_plt < end_local_plt; ++local_plt) | |
2234 | { | |
2235 | if (*local_plt > 0) | |
2236 | { | |
2237 | s = hplink->splt; | |
2238 | *local_plt = s->_raw_size; | |
2239 | s->_raw_size += PLT_ENTRY_SIZE; | |
2240 | if (info->shared) | |
2241 | hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela); | |
2242 | } | |
2243 | else | |
2244 | *local_plt = (bfd_vma) -1; | |
2245 | } | |
2246 | } | |
30667bf3 AM |
2247 | } |
2248 | else | |
2249 | { | |
2250 | /* Run through the function symbols, looking for any that are | |
2251 | PIC, and allocate space for the necessary .plt entries so | |
2252 | that %r19 will be set up. */ | |
2253 | if (! info->shared) | |
2254 | elf_link_hash_traverse (&hplink->root, | |
2255 | hppa_handle_PIC_calls, | |
2256 | info); | |
2257 | ||
2258 | /* We may have created entries in the .rela.got section. | |
2259 | However, if we are not creating the dynamic sections, we will | |
2260 | not actually use these entries. Reset the size of .rela.got, | |
2261 | which will cause it to get stripped from the output file | |
2262 | below. */ | |
2263 | hplink->srelgot->_raw_size = 0; | |
2264 | } | |
2265 | ||
74d1c347 AM |
2266 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ |
2267 | || RELATIVE_DYNAMIC_RELOCS) | |
30667bf3 AM |
2268 | /* If this is a -Bsymbolic shared link, then we need to discard all |
2269 | relocs against symbols defined in a regular object. We also need | |
2270 | to lose relocs we've allocated for long branch stubs if we know | |
2271 | we won't be generating a stub. */ | |
2272 | if (info->shared) | |
2273 | elf_link_hash_traverse (&hplink->root, | |
2274 | hppa_discard_copies, | |
2275 | info); | |
2276 | #endif | |
2277 | ||
2278 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2279 | determined the sizes of the various dynamic sections. Allocate | |
2280 | memory for them. */ | |
2281 | relocs = false; | |
2282 | reltext = false; | |
2283 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2284 | { | |
2285 | const char *name; | |
2286 | ||
2287 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2288 | continue; | |
2289 | ||
2290 | /* It's OK to base decisions on the section name, because none | |
2291 | of the dynobj section names depend upon the input files. */ | |
2292 | name = bfd_get_section_name (dynobj, s); | |
2293 | ||
2294 | if (strncmp (name, ".rela", 5) == 0) | |
2295 | { | |
2296 | if (s->_raw_size != 0) | |
2297 | { | |
2298 | asection *target; | |
2299 | ||
2300 | /* Remember whether there are any reloc sections other | |
2301 | than .rela.plt. */ | |
2302 | if (strcmp (name+5, ".plt") != 0) | |
2303 | { | |
2304 | const char *outname; | |
2305 | ||
2306 | relocs = true; | |
2307 | ||
2308 | /* If this relocation section applies to a read only | |
2309 | section, then we probably need a DT_TEXTREL | |
2310 | entry. The entries in the .rela.plt section | |
2311 | really apply to the .got section, which we | |
2312 | created ourselves and so know is not readonly. */ | |
2313 | outname = bfd_get_section_name (output_bfd, | |
2314 | s->output_section); | |
2315 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
2316 | if (target != NULL | |
2317 | && (target->flags & SEC_READONLY) != 0 | |
2318 | && (target->flags & SEC_ALLOC) != 0) | |
2319 | reltext = true; | |
2320 | } | |
2321 | ||
2322 | /* We use the reloc_count field as a counter if we need | |
2323 | to copy relocs into the output file. */ | |
2324 | s->reloc_count = 0; | |
2325 | } | |
2326 | } | |
2327 | else if (strcmp (name, ".plt") == 0) | |
2328 | ; | |
2329 | else if (strcmp (name, ".got") == 0) | |
2330 | ; | |
2331 | else | |
2332 | { | |
2333 | /* It's not one of our sections, so don't allocate space. */ | |
2334 | continue; | |
2335 | } | |
2336 | ||
2337 | if (s->_raw_size == 0) | |
2338 | { | |
2339 | /* If we don't need this section, strip it from the | |
2340 | output file. This is mostly to handle .rela.bss and | |
2341 | .rela.plt. We must create both sections in | |
2342 | create_dynamic_sections, because they must be created | |
2343 | before the linker maps input sections to output | |
2344 | sections. The linker does that before | |
2345 | adjust_dynamic_symbol is called, and it is that | |
2346 | function which decides whether anything needs to go | |
2347 | into these sections. */ | |
2348 | _bfd_strip_section_from_output (info, s); | |
2349 | continue; | |
2350 | } | |
2351 | ||
2352 | /* Allocate memory for the section contents. Zero it, because | |
2353 | we may not fill in all the reloc sections. */ | |
2354 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2355 | if (s->contents == NULL && s->_raw_size != 0) | |
2356 | return false; | |
2357 | } | |
2358 | ||
74d1c347 | 2359 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
2360 | { |
2361 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It | |
2362 | actually has nothing to do with the PLT, it is how we | |
2363 | communicate the LTP value of a load module to the dynamic | |
2364 | linker. */ | |
2365 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
2366 | return false; | |
2367 | ||
2368 | /* Add some entries to the .dynamic section. We fill in the | |
2369 | values later, in elf32_hppa_finish_dynamic_sections, but we | |
2370 | must add the entries now so that we get the correct size for | |
2371 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2372 | dynamic linker and used by the debugger. */ | |
2373 | if (! info->shared) | |
2374 | { | |
2375 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2376 | return false; | |
2377 | } | |
2378 | ||
2379 | if (hplink->srelplt->_raw_size != 0) | |
2380 | { | |
2381 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2382 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
2383 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
2384 | return false; | |
2385 | } | |
2386 | ||
2387 | if (relocs) | |
2388 | { | |
2389 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
2390 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
2391 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
2392 | sizeof (Elf32_External_Rela))) | |
2393 | return false; | |
2394 | } | |
2395 | ||
2396 | if (reltext) | |
2397 | { | |
2398 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
2399 | return false; | |
2400 | info->flags |= DF_TEXTREL; | |
2401 | } | |
2402 | } | |
2403 | ||
2404 | return true; | |
2405 | } | |
2406 | ||
2407 | ||
2408 | /* External entry points for sizing and building linker stubs. */ | |
2409 | ||
2410 | /* Determine and set the size of the stub section for a final link. | |
2411 | ||
2412 | The basic idea here is to examine all the relocations looking for | |
2413 | PC-relative calls to a target that is unreachable with a "bl" | |
2414 | instruction. */ | |
2415 | ||
2416 | boolean | |
25f72752 | 2417 | elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, |
30667bf3 | 2418 | add_stub_section, layout_sections_again) |
25f72752 | 2419 | bfd *output_bfd; |
30667bf3 | 2420 | bfd *stub_bfd; |
30667bf3 | 2421 | struct bfd_link_info *info; |
25f72752 | 2422 | boolean multi_subspace; |
30667bf3 AM |
2423 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); |
2424 | void (*layout_sections_again) PARAMS ((void)); | |
2425 | { | |
2426 | bfd *input_bfd; | |
2427 | asection *section; | |
25f72752 | 2428 | asection **input_list, **list; |
30667bf3 | 2429 | Elf_Internal_Sym *local_syms, **all_local_syms; |
25f72752 AM |
2430 | unsigned int bfd_indx, bfd_count; |
2431 | int top_id, top_index; | |
30667bf3 AM |
2432 | struct elf32_hppa_link_hash_table *hplink; |
2433 | boolean stub_changed = 0; | |
25f72752 | 2434 | boolean ret = 0; |
30667bf3 AM |
2435 | |
2436 | hplink = hppa_link_hash_table (info); | |
2437 | ||
2438 | /* Stash our params away. */ | |
2439 | hplink->stub_bfd = stub_bfd; | |
2440 | hplink->multi_subspace = multi_subspace; | |
2441 | hplink->add_stub_section = add_stub_section; | |
2442 | hplink->layout_sections_again = layout_sections_again; | |
2443 | ||
25f72752 AM |
2444 | /* Count the number of input BFDs and find the top section id. */ |
2445 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
30667bf3 AM |
2446 | input_bfd != NULL; |
2447 | input_bfd = input_bfd->link_next) | |
2448 | { | |
2449 | bfd_count += 1; | |
25f72752 AM |
2450 | for (section = input_bfd->sections; |
2451 | section != NULL; | |
2452 | section = section->next) | |
2453 | { | |
2454 | if (top_id < section->id) | |
2455 | top_id = section->id; | |
2456 | } | |
30667bf3 AM |
2457 | } |
2458 | ||
25f72752 AM |
2459 | hplink->stub_group |
2460 | = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1)); | |
2461 | if (hplink->stub_group == NULL) | |
30667bf3 AM |
2462 | return false; |
2463 | ||
25f72752 AM |
2464 | /* Now make a list of input sections for each output section. |
2465 | We can't use output_bfd->section_count here as some sections may | |
2466 | have been removed, and _bfd_strip_section_from_output doesn't | |
2467 | renumber the indices. Sections may also be re-ordered, so the | |
2468 | last section index isn't necessarily the biggest. */ | |
2469 | for (section = output_bfd->sections, top_index = 0; | |
2470 | section != NULL; | |
2471 | section = section->next) | |
2472 | { | |
2473 | if (top_index < section->index) | |
2474 | top_index = section->index; | |
2475 | } | |
2476 | input_list | |
2477 | = (asection **) bfd_zmalloc (sizeof (asection *) * (top_index + 1)); | |
2478 | if (input_list == NULL) | |
2479 | return false; | |
2480 | ||
2481 | for (input_bfd = info->input_bfds; | |
2482 | input_bfd != NULL; | |
2483 | input_bfd = input_bfd->link_next) | |
2484 | { | |
2485 | for (section = input_bfd->sections; | |
2486 | section != NULL; | |
2487 | section = section->next) | |
2488 | { | |
2489 | if (section->output_section != NULL | |
2490 | && section->output_section->owner == output_bfd) | |
2491 | { | |
2492 | list = input_list + section->output_section->index; | |
2493 | /* Steal the link_sec pointer for our list. */ | |
2494 | #define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec) | |
2495 | /* This happens to make the list in reverse order, which | |
2496 | is what we want. */ | |
2497 | PREV_SEC (section) = *list; | |
2498 | *list = section; | |
2499 | } | |
2500 | } | |
2501 | } | |
2502 | ||
2503 | /* See whether we can group stub sections together. Grouping stub | |
2504 | sections may result in fewer stubs. More importantly, we need to | |
2505 | put all .init* and .fini* stubs at the beginning of the .init or | |
2506 | .fini output sections respectively, because glibc splits the | |
2507 | _init and _fini functions into multiple parts. Putting a stub in | |
2508 | the middle of a function is not a good idea. */ | |
2509 | list = input_list + output_bfd->section_count; | |
2510 | while (list-- != input_list) | |
2511 | { | |
2512 | asection *tail = *list; | |
2513 | while (tail != NULL) | |
2514 | { | |
2515 | asection *curr; | |
2516 | asection *prev; | |
2517 | bfd_size_type total; | |
2518 | ||
2519 | curr = tail; | |
2520 | if (tail->_cooked_size) | |
2521 | total = tail->_cooked_size; | |
2522 | else | |
2523 | total = tail->_raw_size; | |
2524 | while ((prev = PREV_SEC (curr)) != NULL | |
2525 | && ((total += curr->output_offset - prev->output_offset) | |
2526 | < 250000)) | |
2527 | curr = prev; | |
2528 | ||
2529 | /* OK, the size from the start of CURR to the end is less | |
2530 | than 250000 bytes and thus can be handled by one stub | |
2531 | section. (or the tail section is itself larger than | |
2532 | 250000 bytes, in which case we may be toast.) | |
2533 | We should really be keeping track of the total size of | |
2534 | stubs added here, as stubs contribute to the final output | |
2535 | section size. That's a little tricky, and this way will | |
2536 | only break if stubs added total more than 12144 bytes, or | |
2537 | 1518 long branch stubs. It seems unlikely for more than | |
2538 | 1518 different functions to be called, especially from | |
2539 | code only 250000 bytes long. */ | |
2540 | do | |
2541 | { | |
2542 | prev = PREV_SEC (tail); | |
2543 | /* Set up this stub group. */ | |
2544 | hplink->stub_group[tail->id].link_sec = curr; | |
2545 | } | |
2546 | while (tail != curr && (tail = prev) != NULL); | |
2547 | ||
2548 | /* But wait, there's more! Input sections up to 250000 | |
2549 | bytes before the stub section can be handled by it too. */ | |
2550 | total = 0; | |
2551 | while (prev != NULL | |
2552 | && ((total += tail->output_offset - prev->output_offset) | |
2553 | < 250000)) | |
2554 | { | |
2555 | tail = prev; | |
2556 | prev = PREV_SEC (tail); | |
2557 | hplink->stub_group[tail->id].link_sec = curr; | |
2558 | } | |
2559 | tail = prev; | |
2560 | } | |
2561 | } | |
2562 | free (input_list); | |
30667bf3 AM |
2563 | |
2564 | /* We want to read in symbol extension records only once. To do this | |
2565 | we need to read in the local symbols in parallel and save them for | |
2566 | later use; so hold pointers to the local symbols in an array. */ | |
2567 | all_local_syms | |
2568 | = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *) | |
2569 | * bfd_count); | |
2570 | if (all_local_syms == NULL) | |
25f72752 | 2571 | return false; |
30667bf3 AM |
2572 | |
2573 | /* Walk over all the input BFDs, swapping in local symbols. | |
2574 | If we are creating a shared library, create hash entries for the | |
2575 | export stubs. */ | |
25f72752 | 2576 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2577 | input_bfd != NULL; |
25f72752 | 2578 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2579 | { |
2580 | Elf_Internal_Shdr *symtab_hdr; | |
2581 | Elf_Internal_Sym *isym; | |
25f72752 | 2582 | Elf32_External_Sym *ext_syms, *esym, *end_sy; |
edd21aca | 2583 | |
252b5132 RH |
2584 | /* We'll need the symbol table in a second. */ |
2585 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2586 | if (symtab_hdr->sh_info == 0) | |
2587 | continue; | |
2588 | ||
edd21aca AM |
2589 | /* We need an array of the local symbols attached to the input bfd. |
2590 | Unfortunately, we're going to have to read & swap them in. */ | |
2591 | local_syms = (Elf_Internal_Sym *) | |
2592 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym)); | |
2593 | if (local_syms == NULL) | |
2594 | { | |
2595 | goto error_ret_free_local; | |
2596 | } | |
25f72752 | 2597 | all_local_syms[bfd_indx] = local_syms; |
edd21aca AM |
2598 | ext_syms = (Elf32_External_Sym *) |
2599 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)); | |
2600 | if (ext_syms == NULL) | |
2601 | { | |
2602 | goto error_ret_free_local; | |
2603 | } | |
2604 | ||
2605 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
30667bf3 | 2606 | || (bfd_read (ext_syms, 1, |
edd21aca AM |
2607 | (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)), |
2608 | input_bfd) | |
2609 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) | |
2610 | { | |
2611 | free (ext_syms); | |
2612 | goto error_ret_free_local; | |
2613 | } | |
2614 | ||
2615 | /* Swap the local symbols in. */ | |
2616 | isym = local_syms; | |
2617 | esym = ext_syms; | |
25f72752 | 2618 | for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++) |
edd21aca AM |
2619 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); |
2620 | ||
2621 | /* Now we can free the external symbols. */ | |
2622 | free (ext_syms); | |
edd21aca | 2623 | |
d5c73c2f | 2624 | #if ! LONG_BRANCH_PIC_IN_SHLIB |
25f72752 AM |
2625 | /* If this is a shared link, find all the stub reloc sections. */ |
2626 | if (info->shared) | |
2627 | for (section = input_bfd->sections; | |
2628 | section != NULL; | |
2629 | section = section->next) | |
2630 | { | |
2631 | char *name; | |
2632 | asection *reloc_sec; | |
d5c73c2f | 2633 | |
25f72752 AM |
2634 | name = bfd_malloc (strlen (section->name) |
2635 | + sizeof STUB_SUFFIX | |
2636 | + 5); | |
2637 | if (name == NULL) | |
2638 | return false; | |
2639 | sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX); | |
2640 | reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name); | |
2641 | hplink->stub_group[section->id].reloc_sec = reloc_sec; | |
2642 | free (name); | |
2643 | } | |
d5c73c2f | 2644 | #endif |
d5c73c2f | 2645 | |
30667bf3 AM |
2646 | if (info->shared && hplink->multi_subspace) |
2647 | { | |
25f72752 AM |
2648 | struct elf_link_hash_entry **sym_hashes; |
2649 | struct elf_link_hash_entry **end_hashes; | |
30667bf3 AM |
2650 | unsigned int symcount; |
2651 | ||
2652 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2653 | - symtab_hdr->sh_info); | |
25f72752 AM |
2654 | sym_hashes = elf_sym_hashes (input_bfd); |
2655 | end_hashes = sym_hashes + symcount; | |
30667bf3 AM |
2656 | |
2657 | /* Look through the global syms for functions; We need to | |
2658 | build export stubs for all globally visible functions. */ | |
25f72752 | 2659 | for (; sym_hashes < end_hashes; sym_hashes++) |
30667bf3 AM |
2660 | { |
2661 | struct elf32_hppa_link_hash_entry *hash; | |
2662 | ||
25f72752 | 2663 | hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes; |
30667bf3 AM |
2664 | |
2665 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2666 | || hash->elf.root.type == bfd_link_hash_warning) | |
2667 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2668 | hash->elf.root.u.i.link); | |
2669 | ||
2670 | /* At this point in the link, undefined syms have been | |
2671 | resolved, so we need to check that the symbol was | |
2672 | defined in this BFD. */ | |
2673 | if ((hash->elf.root.type == bfd_link_hash_defined | |
2674 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2675 | && hash->elf.type == STT_FUNC | |
2676 | && hash->elf.root.u.def.section->output_section != NULL | |
25f72752 AM |
2677 | && (hash->elf.root.u.def.section->output_section->owner |
2678 | == output_bfd) | |
30667bf3 AM |
2679 | && hash->elf.root.u.def.section->owner == input_bfd |
2680 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
2681 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) | |
2682 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT) | |
2683 | { | |
2684 | asection *sec; | |
2685 | const char *stub_name; | |
2686 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2687 | ||
2688 | sec = hash->elf.root.u.def.section; | |
2689 | stub_name = hash->elf.root.root.string; | |
2690 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2691 | stub_name, | |
2692 | false, false); | |
2693 | if (stub_entry == NULL) | |
2694 | { | |
25f72752 | 2695 | stub_entry = hppa_add_stub (stub_name, sec, hplink); |
30667bf3 AM |
2696 | if (!stub_entry) |
2697 | goto error_ret_free_local; | |
2698 | ||
2699 | stub_entry->target_value = hash->elf.root.u.def.value; | |
2700 | stub_entry->target_section = hash->elf.root.u.def.section; | |
2701 | stub_entry->stub_type = hppa_stub_export; | |
2702 | stub_entry->h = hash; | |
2703 | stub_changed = 1; | |
2704 | } | |
2705 | else | |
2706 | { | |
2707 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"), | |
2708 | bfd_get_filename (input_bfd), | |
2709 | stub_name); | |
2710 | } | |
2711 | } | |
2712 | } | |
30667bf3 AM |
2713 | } |
2714 | } | |
edd21aca AM |
2715 | |
2716 | while (1) | |
2717 | { | |
30667bf3 AM |
2718 | asection *stub_sec; |
2719 | ||
25f72752 | 2720 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2721 | input_bfd != NULL; |
25f72752 | 2722 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2723 | { |
2724 | Elf_Internal_Shdr *symtab_hdr; | |
2725 | ||
2726 | /* We'll need the symbol table in a second. */ | |
2727 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2728 | if (symtab_hdr->sh_info == 0) | |
2729 | continue; | |
2730 | ||
25f72752 | 2731 | local_syms = all_local_syms[bfd_indx]; |
30667bf3 AM |
2732 | |
2733 | /* Walk over each section attached to the input bfd. */ | |
2734 | for (section = input_bfd->sections; | |
2735 | section != NULL; | |
25f72752 | 2736 | section = section->next) |
30667bf3 AM |
2737 | { |
2738 | Elf_Internal_Shdr *input_rel_hdr; | |
2739 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2740 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2741 | ||
2742 | /* If there aren't any relocs, then there's nothing more | |
2743 | to do. */ | |
2744 | if ((section->flags & SEC_RELOC) == 0 | |
2745 | || section->reloc_count == 0) | |
2746 | continue; | |
2747 | ||
25f72752 AM |
2748 | /* If this section is a link-once section that will be |
2749 | discarded, then don't create any stubs. */ | |
2750 | if (section->output_section == NULL | |
2751 | || section->output_section->owner != output_bfd) | |
2752 | continue; | |
2753 | ||
30667bf3 AM |
2754 | /* Allocate space for the external relocations. */ |
2755 | external_relocs | |
2756 | = ((Elf32_External_Rela *) | |
2757 | bfd_malloc (section->reloc_count | |
2758 | * sizeof (Elf32_External_Rela))); | |
2759 | if (external_relocs == NULL) | |
2760 | { | |
2761 | goto error_ret_free_local; | |
2762 | } | |
2763 | ||
2764 | /* Likewise for the internal relocations. */ | |
2765 | internal_relocs = ((Elf_Internal_Rela *) | |
2766 | bfd_malloc (section->reloc_count | |
2767 | * sizeof (Elf_Internal_Rela))); | |
2768 | if (internal_relocs == NULL) | |
2769 | { | |
2770 | free (external_relocs); | |
2771 | goto error_ret_free_local; | |
2772 | } | |
2773 | ||
2774 | /* Read in the external relocs. */ | |
2775 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2776 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
2777 | || bfd_read (external_relocs, 1, | |
2778 | input_rel_hdr->sh_size, | |
2779 | input_bfd) != input_rel_hdr->sh_size) | |
2780 | { | |
2781 | free (external_relocs); | |
2782 | error_ret_free_internal: | |
2783 | free (internal_relocs); | |
2784 | goto error_ret_free_local; | |
2785 | } | |
2786 | ||
2787 | /* Swap in the relocs. */ | |
2788 | erela = external_relocs; | |
2789 | erelaend = erela + section->reloc_count; | |
2790 | irela = internal_relocs; | |
2791 | for (; erela < erelaend; erela++, irela++) | |
2792 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
2793 | ||
2794 | /* We're done with the external relocs, free them. */ | |
2795 | free (external_relocs); | |
2796 | ||
2797 | /* Now examine each relocation. */ | |
2798 | irela = internal_relocs; | |
2799 | irelaend = irela + section->reloc_count; | |
2800 | for (; irela < irelaend; irela++) | |
2801 | { | |
2802 | unsigned int r_type, r_indx; | |
2803 | enum elf32_hppa_stub_type stub_type; | |
2804 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2805 | asection *sym_sec; | |
2806 | bfd_vma sym_value; | |
2807 | bfd_vma destination; | |
2808 | struct elf32_hppa_link_hash_entry *hash; | |
2809 | char *stub_name; | |
25f72752 | 2810 | const asection *id_sec; |
30667bf3 AM |
2811 | |
2812 | r_type = ELF32_R_TYPE (irela->r_info); | |
2813 | r_indx = ELF32_R_SYM (irela->r_info); | |
2814 | ||
2815 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
2816 | { | |
2817 | bfd_set_error (bfd_error_bad_value); | |
2818 | goto error_ret_free_internal; | |
2819 | } | |
2820 | ||
2821 | /* Only look for stubs on call instructions. */ | |
2822 | if (r_type != (unsigned int) R_PARISC_PCREL12F | |
2823 | && r_type != (unsigned int) R_PARISC_PCREL17F | |
2824 | && r_type != (unsigned int) R_PARISC_PCREL22F) | |
2825 | continue; | |
2826 | ||
2827 | /* Now determine the call target, its name, value, | |
2828 | section. */ | |
2829 | sym_sec = NULL; | |
2830 | sym_value = 0; | |
2831 | destination = 0; | |
2832 | hash = NULL; | |
2833 | if (r_indx < symtab_hdr->sh_info) | |
2834 | { | |
2835 | /* It's a local symbol. */ | |
2836 | Elf_Internal_Sym *sym; | |
2837 | Elf_Internal_Shdr *hdr; | |
2838 | ||
2839 | sym = local_syms + r_indx; | |
2840 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2841 | sym_sec = hdr->bfd_section; | |
2842 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2843 | sym_value = sym->st_value; | |
2844 | destination = (sym_value + irela->r_addend | |
2845 | + sym_sec->output_offset | |
2846 | + sym_sec->output_section->vma); | |
2847 | } | |
2848 | else | |
2849 | { | |
2850 | /* It's an external symbol. */ | |
2851 | int e_indx; | |
2852 | ||
2853 | e_indx = r_indx - symtab_hdr->sh_info; | |
2854 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2855 | elf_sym_hashes (input_bfd)[e_indx]); | |
2856 | ||
2857 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2858 | || hash->elf.root.type == bfd_link_hash_warning) | |
2859 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2860 | hash->elf.root.u.i.link); | |
2861 | ||
2862 | if (hash->elf.root.type == bfd_link_hash_defined | |
2863 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2864 | { | |
2865 | sym_sec = hash->elf.root.u.def.section; | |
2866 | sym_value = hash->elf.root.u.def.value; | |
2867 | if (sym_sec->output_section != NULL) | |
2868 | destination = (sym_value + irela->r_addend | |
2869 | + sym_sec->output_offset | |
2870 | + sym_sec->output_section->vma); | |
2871 | } | |
2872 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
2873 | { | |
2874 | if (! info->shared) | |
2875 | continue; | |
2876 | } | |
2877 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
2878 | { | |
2879 | if (! (info->shared | |
2880 | && !info->no_undefined | |
2881 | && (ELF_ST_VISIBILITY (hash->elf.other) | |
2882 | == STV_DEFAULT))) | |
2883 | continue; | |
2884 | } | |
2885 | else | |
2886 | { | |
2887 | bfd_set_error (bfd_error_bad_value); | |
2888 | goto error_ret_free_internal; | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | /* Determine what (if any) linker stub is needed. */ | |
2893 | stub_type = hppa_type_of_stub (section, irela, hash, | |
2894 | destination); | |
2895 | if (stub_type == hppa_stub_none) | |
2896 | continue; | |
2897 | ||
25f72752 AM |
2898 | /* Support for grouping stub sections. */ |
2899 | id_sec = hplink->stub_group[section->id].link_sec; | |
2900 | ||
30667bf3 | 2901 | /* Get the name of this stub. */ |
25f72752 | 2902 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela); |
30667bf3 AM |
2903 | if (!stub_name) |
2904 | goto error_ret_free_internal; | |
2905 | ||
2906 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, | |
2907 | stub_name, | |
2908 | false, false); | |
2909 | if (stub_entry != NULL) | |
2910 | { | |
2911 | /* The proper stub has already been created. */ | |
2912 | free (stub_name); | |
2913 | continue; | |
2914 | } | |
2915 | ||
25f72752 | 2916 | stub_entry = hppa_add_stub (stub_name, section, hplink); |
30667bf3 AM |
2917 | if (stub_entry == NULL) |
2918 | { | |
2919 | free (stub_name); | |
2920 | goto error_ret_free_local; | |
2921 | } | |
2922 | ||
2923 | stub_entry->target_value = sym_value; | |
2924 | stub_entry->target_section = sym_sec; | |
2925 | stub_entry->stub_type = stub_type; | |
2926 | if (info->shared) | |
2927 | { | |
2928 | if (stub_type == hppa_stub_import) | |
2929 | stub_entry->stub_type = hppa_stub_import_shared; | |
2930 | else if (stub_type == hppa_stub_long_branch | |
2931 | && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL)) | |
2932 | stub_entry->stub_type = hppa_stub_long_branch_shared; | |
2933 | } | |
2934 | stub_entry->h = hash; | |
2935 | stub_changed = 1; | |
2936 | } | |
2937 | ||
2938 | /* We're done with the internal relocs, free them. */ | |
2939 | free (internal_relocs); | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | if (!stub_changed) | |
2944 | break; | |
2945 | ||
2946 | /* OK, we've added some stubs. Find out the new size of the | |
2947 | stub sections. */ | |
30667bf3 AM |
2948 | for (stub_sec = hplink->stub_bfd->sections; |
2949 | stub_sec != NULL; | |
2950 | stub_sec = stub_sec->next) | |
2951 | { | |
74d1c347 AM |
2952 | stub_sec->_raw_size = 0; |
2953 | stub_sec->_cooked_size = 0; | |
2954 | } | |
2955 | #if ! LONG_BRANCH_PIC_IN_SHLIB | |
25f72752 AM |
2956 | { |
2957 | int i; | |
2958 | ||
2959 | for (i = top_id; i >= 0; --i) | |
2960 | { | |
2961 | /* This will probably hit the same section many times.. */ | |
2962 | stub_sec = hplink->stub_group[i].reloc_sec; | |
2963 | if (stub_sec != NULL) | |
2964 | { | |
2965 | stub_sec->_raw_size = 0; | |
2966 | stub_sec->_cooked_size = 0; | |
2967 | } | |
2968 | } | |
2969 | } | |
74d1c347 AM |
2970 | #endif |
2971 | ||
2972 | bfd_hash_traverse (&hplink->stub_hash_table, | |
2973 | hppa_size_one_stub, | |
2974 | hplink); | |
2975 | ||
30667bf3 AM |
2976 | /* Ask the linker to do its stuff. */ |
2977 | (*hplink->layout_sections_again) (); | |
2978 | stub_changed = 0; | |
2979 | } | |
2980 | ||
25f72752 | 2981 | ret = 1; |
30667bf3 AM |
2982 | |
2983 | error_ret_free_local: | |
25f72752 AM |
2984 | while (bfd_count-- > 0) |
2985 | if (all_local_syms[bfd_count]) | |
2986 | free (all_local_syms[bfd_count]); | |
30667bf3 AM |
2987 | free (all_local_syms); |
2988 | ||
25f72752 | 2989 | return ret; |
30667bf3 AM |
2990 | } |
2991 | ||
2992 | ||
2993 | /* For a final link, this function is called after we have sized the | |
2994 | stubs to provide a value for __gp. */ | |
2995 | ||
2996 | boolean | |
2997 | elf32_hppa_set_gp (abfd, info) | |
2998 | bfd *abfd; | |
2999 | struct bfd_link_info *info; | |
3000 | { | |
74d1c347 | 3001 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
3002 | struct elf_link_hash_entry *h; |
3003 | asection *sec; | |
3004 | bfd_vma gp_val; | |
3005 | ||
74d1c347 AM |
3006 | hplink = hppa_link_hash_table (info); |
3007 | h = elf_link_hash_lookup (&hplink->root, "$global$", | |
30667bf3 AM |
3008 | false, false, false); |
3009 | ||
3010 | if (h != NULL && h->root.type == bfd_link_hash_defined) | |
3011 | { | |
3012 | gp_val = h->root.u.def.value; | |
3013 | sec = h->root.u.def.section; | |
3014 | } | |
3015 | else | |
3016 | { | |
74d1c347 AM |
3017 | /* Choose to point our LTP at, in this order, one of .plt, .got, |
3018 | or .data, if these sections exist. In the case of choosing | |
3019 | .plt try to make the LTP ideal for addressing anywhere in the | |
3020 | .plt or .got with a 14 bit signed offset. Typically, the end | |
3021 | of the .plt is the start of the .got, so choose .plt + 0x2000 | |
3022 | if either the .plt or .got is larger than 0x2000. If both | |
3023 | the .plt and .got are smaller than 0x2000, choose the end of | |
3024 | the .plt section. */ | |
3025 | ||
3026 | sec = hplink->splt; | |
3027 | if (sec != NULL) | |
30667bf3 | 3028 | { |
74d1c347 AM |
3029 | gp_val = sec->_raw_size; |
3030 | if (gp_val > 0x2000 | |
3031 | || (hplink->sgot && hplink->sgot->_raw_size > 0x2000)) | |
3032 | { | |
3033 | gp_val = 0x2000; | |
3034 | } | |
3035 | } | |
3036 | else | |
3037 | { | |
3038 | gp_val = 0; | |
3039 | sec = hplink->sgot; | |
3040 | if (sec != NULL) | |
3041 | { | |
3042 | /* We know we don't have a .plt. If .got is large, | |
3043 | offset our LTP. */ | |
3044 | if (sec->_raw_size > 0x2000) | |
3045 | gp_val = 0x2000; | |
3046 | } | |
3047 | else | |
3048 | { | |
3049 | /* No .plt or .got. Who cares what the LTP is? */ | |
3050 | sec = bfd_get_section_by_name (abfd, ".data"); | |
3051 | } | |
30667bf3 AM |
3052 | } |
3053 | } | |
3054 | ||
74d1c347 AM |
3055 | if (sec != NULL) |
3056 | gp_val += sec->output_section->vma + sec->output_offset; | |
3057 | ||
3058 | elf_gp (abfd) = gp_val; | |
30667bf3 AM |
3059 | return true; |
3060 | } | |
3061 | ||
3062 | ||
3063 | /* Build all the stubs associated with the current output file. The | |
3064 | stubs are kept in a hash table attached to the main linker hash | |
3065 | table. We also set up the .plt entries for statically linked PIC | |
3066 | functions here. This function is called via hppaelf_finish in the | |
3067 | linker. */ | |
3068 | ||
3069 | boolean | |
3070 | elf32_hppa_build_stubs (info) | |
3071 | struct bfd_link_info *info; | |
3072 | { | |
3073 | asection *stub_sec; | |
3074 | struct bfd_hash_table *table; | |
3075 | struct elf32_hppa_link_hash_table *hplink; | |
3076 | ||
3077 | hplink = hppa_link_hash_table (info); | |
3078 | ||
3079 | for (stub_sec = hplink->stub_bfd->sections; | |
3080 | stub_sec != NULL; | |
3081 | stub_sec = stub_sec->next) | |
3082 | { | |
74d1c347 | 3083 | size_t size; |
30667bf3 AM |
3084 | |
3085 | /* Allocate memory to hold the linker stubs. */ | |
74d1c347 | 3086 | size = stub_sec->_raw_size; |
30667bf3 AM |
3087 | stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd, |
3088 | size); | |
3089 | if (stub_sec->contents == NULL && size != 0) | |
3090 | return false; | |
74d1c347 | 3091 | stub_sec->_raw_size = 0; |
30667bf3 AM |
3092 | } |
3093 | ||
3094 | /* Build the stubs as directed by the stub hash table. */ | |
30667bf3 AM |
3095 | table = &hplink->stub_hash_table; |
3096 | bfd_hash_traverse (table, hppa_build_one_stub, info); | |
3097 | ||
3098 | return true; | |
3099 | } | |
3100 | ||
3101 | ||
3102 | /* Perform a relocation as part of a final link. */ | |
3103 | ||
3104 | static bfd_reloc_status_type | |
25f72752 | 3105 | final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h) |
30667bf3 AM |
3106 | asection *input_section; |
3107 | bfd_byte *contents; | |
3108 | const Elf_Internal_Rela *rel; | |
3109 | bfd_vma value; | |
25f72752 | 3110 | struct elf32_hppa_link_hash_table *hplink; |
30667bf3 AM |
3111 | asection *sym_sec; |
3112 | struct elf32_hppa_link_hash_entry *h; | |
3113 | { | |
3114 | int insn; | |
3115 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); | |
3116 | reloc_howto_type *howto = elf_hppa_howto_table + r_type; | |
3117 | int r_format = howto->bitsize; | |
3118 | enum hppa_reloc_field_selector_type_alt r_field; | |
3119 | bfd *input_bfd = input_section->owner; | |
3120 | bfd_vma offset = rel->r_offset; | |
3121 | bfd_vma max_branch_offset = 0; | |
3122 | bfd_byte *hit_data = contents + offset; | |
3123 | bfd_signed_vma addend = rel->r_addend; | |
3124 | bfd_vma location; | |
3125 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL; | |
3126 | int val; | |
3127 | ||
3128 | if (r_type == R_PARISC_NONE) | |
3129 | return bfd_reloc_ok; | |
3130 | ||
3131 | insn = bfd_get_32 (input_bfd, hit_data); | |
3132 | ||
3133 | /* Find out where we are and where we're going. */ | |
3134 | location = (offset + | |
3135 | input_section->output_offset + | |
3136 | input_section->output_section->vma); | |
3137 | ||
3138 | switch (r_type) | |
3139 | { | |
3140 | case R_PARISC_PCREL12F: | |
3141 | case R_PARISC_PCREL17F: | |
3142 | case R_PARISC_PCREL22F: | |
3143 | /* If this is a call to a function defined in another dynamic | |
3144 | library, or if it is a call to a PIC function in the same | |
74d1c347 AM |
3145 | object, or if this is a shared link and it is a call to a |
3146 | weak symbol which may or may not be in the same object, then | |
3147 | find the import stub in the stub hash. */ | |
30667bf3 AM |
3148 | if (sym_sec == NULL |
3149 | || sym_sec->output_section == NULL | |
74d1c347 AM |
3150 | || (h != NULL && |
3151 | (h->pic_call | |
3152 | || (h->elf.root.type == bfd_link_hash_defweak | |
3153 | && h->elf.dynindx != -1 | |
3154 | && h->elf.plt.offset != (bfd_vma) -1)))) | |
30667bf3 AM |
3155 | { |
3156 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
25f72752 | 3157 | h, rel, hplink); |
30667bf3 AM |
3158 | if (stub_entry != NULL) |
3159 | { | |
3160 | value = (stub_entry->stub_offset | |
3161 | + stub_entry->stub_sec->output_offset | |
3162 | + stub_entry->stub_sec->output_section->vma); | |
3163 | addend = 0; | |
3164 | } | |
3165 | else if (sym_sec == NULL && h != NULL | |
3166 | && h->elf.root.type == bfd_link_hash_undefweak) | |
3167 | { | |
3168 | /* It's OK if undefined weak. Make undefined weak | |
3169 | branches go nowhere. */ | |
3170 | value = location; | |
3171 | addend = 0; | |
3172 | } | |
3173 | else | |
3174 | return bfd_reloc_notsupported; | |
3175 | } | |
3176 | /* Fall thru. */ | |
3177 | ||
3178 | case R_PARISC_PCREL21L: | |
3179 | case R_PARISC_PCREL17C: | |
3180 | case R_PARISC_PCREL17R: | |
3181 | case R_PARISC_PCREL14R: | |
3182 | case R_PARISC_PCREL14F: | |
3183 | /* Make it a pc relative offset. */ | |
3184 | value -= location; | |
3185 | addend -= 8; | |
3186 | break; | |
3187 | ||
3188 | case R_PARISC_DPREL21L: | |
3189 | case R_PARISC_DPREL14R: | |
3190 | case R_PARISC_DPREL14F: | |
3191 | /* For all the DP relative relocations, we need to examine the symbol's | |
3192 | section. If it's a code section, then "data pointer relative" makes | |
3193 | no sense. In that case we don't adjust the "value", and for 21 bit | |
3194 | addil instructions, we change the source addend register from %dp to | |
3195 | %r0. This situation commonly arises when a variable's "constness" | |
3196 | is declared differently from the way the variable is defined. For | |
3197 | instance: "extern int foo" with foo defined as "const int foo". */ | |
3198 | if (sym_sec == NULL) | |
3199 | break; | |
3200 | if ((sym_sec->flags & SEC_CODE) != 0) | |
3201 | { | |
3202 | if ((insn & ((0x3f << 26) | (0x1f << 21))) | |
3203 | == (((int) OP_ADDIL << 26) | (27 << 21))) | |
3204 | { | |
3205 | insn &= ~ (0x1f << 21); | |
74d1c347 | 3206 | #if 1 /* debug them. */ |
30667bf3 AM |
3207 | (*_bfd_error_handler) |
3208 | (_("%s(%s+0x%lx): fixing %s"), | |
3209 | bfd_get_filename (input_bfd), | |
3210 | input_section->name, | |
3211 | (long) rel->r_offset, | |
3212 | howto->name); | |
3213 | #endif | |
3214 | } | |
3215 | /* Now try to make things easy for the dynamic linker. */ | |
3216 | ||
3217 | break; | |
3218 | } | |
74d1c347 | 3219 | /* Fall thru. */ |
30667bf3 AM |
3220 | |
3221 | case R_PARISC_DLTIND21L: | |
3222 | case R_PARISC_DLTIND14R: | |
3223 | case R_PARISC_DLTIND14F: | |
3224 | value -= elf_gp (input_section->output_section->owner); | |
3225 | break; | |
3226 | ||
3227 | default: | |
3228 | break; | |
3229 | } | |
3230 | ||
3231 | switch (r_type) | |
3232 | { | |
3233 | case R_PARISC_DIR32: | |
3234 | case R_PARISC_DIR17F: | |
3235 | case R_PARISC_PCREL17C: | |
3236 | case R_PARISC_PCREL14F: | |
3237 | case R_PARISC_DPREL14F: | |
3238 | case R_PARISC_PLABEL32: | |
3239 | case R_PARISC_DLTIND14F: | |
3240 | case R_PARISC_SEGBASE: | |
3241 | case R_PARISC_SEGREL32: | |
3242 | r_field = e_fsel; | |
3243 | break; | |
3244 | ||
3245 | case R_PARISC_DIR21L: | |
3246 | case R_PARISC_PCREL21L: | |
3247 | case R_PARISC_DPREL21L: | |
3248 | case R_PARISC_PLABEL21L: | |
3249 | case R_PARISC_DLTIND21L: | |
3250 | r_field = e_lrsel; | |
3251 | break; | |
3252 | ||
3253 | case R_PARISC_DIR17R: | |
3254 | case R_PARISC_PCREL17R: | |
3255 | case R_PARISC_DIR14R: | |
3256 | case R_PARISC_PCREL14R: | |
3257 | case R_PARISC_DPREL14R: | |
3258 | case R_PARISC_PLABEL14R: | |
3259 | case R_PARISC_DLTIND14R: | |
3260 | r_field = e_rrsel; | |
3261 | break; | |
3262 | ||
3263 | case R_PARISC_PCREL12F: | |
3264 | case R_PARISC_PCREL17F: | |
3265 | case R_PARISC_PCREL22F: | |
3266 | r_field = e_fsel; | |
3267 | ||
3268 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3269 | { | |
3270 | max_branch_offset = (1 << (17-1)) << 2; | |
3271 | } | |
3272 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3273 | { | |
3274 | max_branch_offset = (1 << (12-1)) << 2; | |
3275 | } | |
3276 | else | |
3277 | { | |
3278 | max_branch_offset = (1 << (22-1)) << 2; | |
3279 | } | |
3280 | ||
3281 | /* sym_sec is NULL on undefined weak syms or when shared on | |
3282 | undefined syms. We've already checked for a stub for the | |
3283 | shared undefined case. */ | |
3284 | if (sym_sec == NULL) | |
3285 | break; | |
3286 | ||
3287 | /* If the branch is out of reach, then redirect the | |
3288 | call to the local stub for this function. */ | |
3289 | if (value + addend + max_branch_offset >= 2*max_branch_offset) | |
3290 | { | |
3291 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
25f72752 | 3292 | h, rel, hplink); |
30667bf3 AM |
3293 | if (stub_entry == NULL) |
3294 | return bfd_reloc_notsupported; | |
3295 | ||
3296 | /* Munge up the value and addend so that we call the stub | |
3297 | rather than the procedure directly. */ | |
3298 | value = (stub_entry->stub_offset | |
3299 | + stub_entry->stub_sec->output_offset | |
3300 | + stub_entry->stub_sec->output_section->vma | |
3301 | - location); | |
3302 | addend = -8; | |
3303 | } | |
3304 | break; | |
3305 | ||
3306 | /* Something we don't know how to handle. */ | |
3307 | default: | |
3308 | return bfd_reloc_notsupported; | |
3309 | } | |
3310 | ||
3311 | /* Make sure we can reach the stub. */ | |
3312 | if (max_branch_offset != 0 | |
3313 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3314 | { | |
3315 | (*_bfd_error_handler) | |
3316 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), | |
3317 | bfd_get_filename (input_bfd), | |
3318 | input_section->name, | |
3319 | (long) rel->r_offset, | |
3320 | stub_entry->root.string); | |
3321 | return bfd_reloc_notsupported; | |
3322 | } | |
3323 | ||
3324 | val = hppa_field_adjust (value, addend, r_field); | |
3325 | ||
3326 | switch (r_type) | |
3327 | { | |
3328 | case R_PARISC_PCREL12F: | |
3329 | case R_PARISC_PCREL17C: | |
3330 | case R_PARISC_PCREL17F: | |
3331 | case R_PARISC_PCREL17R: | |
3332 | case R_PARISC_PCREL22F: | |
3333 | case R_PARISC_DIR17F: | |
3334 | case R_PARISC_DIR17R: | |
3335 | /* This is a branch. Divide the offset by four. | |
3336 | Note that we need to decide whether it's a branch or | |
3337 | otherwise by inspecting the reloc. Inspecting insn won't | |
3338 | work as insn might be from a .word directive. */ | |
3339 | val >>= 2; | |
3340 | break; | |
3341 | ||
3342 | default: | |
3343 | break; | |
3344 | } | |
3345 | ||
3346 | insn = hppa_rebuild_insn (insn, val, r_format); | |
3347 | ||
3348 | /* Update the instruction word. */ | |
74d1c347 | 3349 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); |
30667bf3 AM |
3350 | return bfd_reloc_ok; |
3351 | } | |
3352 | ||
3353 | ||
3354 | /* Relocate an HPPA ELF section. */ | |
3355 | ||
3356 | static boolean | |
3357 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
3358 | contents, relocs, local_syms, local_sections) | |
3359 | bfd *output_bfd; | |
3360 | struct bfd_link_info *info; | |
3361 | bfd *input_bfd; | |
3362 | asection *input_section; | |
3363 | bfd_byte *contents; | |
3364 | Elf_Internal_Rela *relocs; | |
3365 | Elf_Internal_Sym *local_syms; | |
3366 | asection **local_sections; | |
3367 | { | |
3368 | bfd *dynobj; | |
3369 | bfd_vma *local_got_offsets; | |
3370 | struct elf32_hppa_link_hash_table *hplink; | |
3371 | Elf_Internal_Shdr *symtab_hdr; | |
3372 | Elf_Internal_Rela *rel; | |
3373 | Elf_Internal_Rela *relend; | |
3374 | asection *sreloc; | |
3375 | ||
3376 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3377 | ||
30667bf3 | 3378 | hplink = hppa_link_hash_table (info); |
74d1c347 AM |
3379 | dynobj = hplink->root.dynobj; |
3380 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
30667bf3 AM |
3381 | sreloc = NULL; |
3382 | ||
3383 | rel = relocs; | |
3384 | relend = relocs + input_section->reloc_count; | |
3385 | for (; rel < relend; rel++) | |
3386 | { | |
3387 | unsigned int r_type; | |
3388 | reloc_howto_type *howto; | |
3389 | unsigned int r_symndx; | |
3390 | struct elf32_hppa_link_hash_entry *h; | |
3391 | Elf_Internal_Sym *sym; | |
3392 | asection *sym_sec; | |
3393 | bfd_vma relocation; | |
3394 | bfd_reloc_status_type r; | |
3395 | const char *sym_name; | |
74d1c347 | 3396 | boolean plabel; |
30667bf3 AM |
3397 | |
3398 | r_type = ELF32_R_TYPE (rel->r_info); | |
3399 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3400 | { | |
3401 | bfd_set_error (bfd_error_bad_value); | |
3402 | return false; | |
3403 | } | |
3404 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3405 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3406 | continue; | |
3407 | ||
3408 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3409 | ||
3410 | if (info->relocateable) | |
3411 | { | |
3412 | /* This is a relocateable link. We don't have to change | |
3413 | anything, unless the reloc is against a section symbol, | |
3414 | in which case we have to adjust according to where the | |
3415 | section symbol winds up in the output section. */ | |
3416 | if (r_symndx < symtab_hdr->sh_info) | |
3417 | { | |
3418 | sym = local_syms + r_symndx; | |
3419 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3420 | { | |
3421 | sym_sec = local_sections[r_symndx]; | |
3422 | rel->r_addend += sym_sec->output_offset; | |
3423 | } | |
3424 | } | |
3425 | continue; | |
3426 | } | |
3427 | ||
3428 | /* This is a final link. */ | |
3429 | h = NULL; | |
3430 | sym = NULL; | |
3431 | sym_sec = NULL; | |
3432 | if (r_symndx < symtab_hdr->sh_info) | |
3433 | { | |
3434 | /* This is a local symbol, h defaults to NULL. */ | |
3435 | sym = local_syms + r_symndx; | |
3436 | sym_sec = local_sections[r_symndx]; | |
3437 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3438 | ? 0 : sym->st_value) | |
3439 | + sym_sec->output_offset | |
3440 | + sym_sec->output_section->vma); | |
3441 | } | |
3442 | else | |
3443 | { | |
3444 | int indx; | |
3445 | ||
3446 | /* It's a global; Find its entry in the link hash. */ | |
3447 | indx = r_symndx - symtab_hdr->sh_info; | |
3448 | h = ((struct elf32_hppa_link_hash_entry *) | |
3449 | elf_sym_hashes (input_bfd)[indx]); | |
3450 | while (h->elf.root.type == bfd_link_hash_indirect | |
3451 | || h->elf.root.type == bfd_link_hash_warning) | |
3452 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; | |
3453 | ||
3454 | relocation = 0; | |
3455 | if (h->elf.root.type == bfd_link_hash_defined | |
3456 | || h->elf.root.type == bfd_link_hash_defweak) | |
3457 | { | |
3458 | sym_sec = h->elf.root.u.def.section; | |
3459 | /* If sym_sec->output_section is NULL, then it's a | |
3460 | symbol defined in a shared library. */ | |
3461 | if (sym_sec->output_section != NULL) | |
3462 | relocation = (h->elf.root.u.def.value | |
3463 | + sym_sec->output_offset | |
3464 | + sym_sec->output_section->vma); | |
3465 | } | |
3466 | else if (h->elf.root.type == bfd_link_hash_undefweak) | |
3467 | ; | |
3468 | else if (info->shared && !info->no_undefined | |
3469 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT) | |
3470 | { | |
3471 | if (info->symbolic) | |
3472 | if (!((*info->callbacks->undefined_symbol) | |
3473 | (info, h->elf.root.root.string, input_bfd, | |
3474 | input_section, rel->r_offset, false))) | |
3475 | return false; | |
3476 | } | |
3477 | else | |
3478 | { | |
3479 | if (!((*info->callbacks->undefined_symbol) | |
3480 | (info, h->elf.root.root.string, input_bfd, | |
3481 | input_section, rel->r_offset, true))) | |
3482 | return false; | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | /* Do any required modifications to the relocation value, and | |
25f72752 AM |
3487 | determine what types of dynamic info we need to output, if |
3488 | any. */ | |
74d1c347 | 3489 | plabel = 0; |
30667bf3 AM |
3490 | switch (r_type) |
3491 | { | |
3492 | case R_PARISC_DLTIND14F: | |
3493 | case R_PARISC_DLTIND14R: | |
3494 | case R_PARISC_DLTIND21L: | |
3495 | /* Relocation is to the entry for this symbol in the global | |
3496 | offset table. */ | |
3497 | if (h != NULL) | |
3498 | { | |
3499 | bfd_vma off; | |
3500 | ||
3501 | off = h->elf.got.offset; | |
3502 | BFD_ASSERT (off != (bfd_vma) -1); | |
3503 | ||
74d1c347 | 3504 | if (! hplink->root.dynamic_sections_created |
30667bf3 AM |
3505 | || (info->shared |
3506 | && (info->symbolic || h->elf.dynindx == -1) | |
3507 | && (h->elf.elf_link_hash_flags | |
3508 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
3509 | { | |
3510 | /* This is actually a static link, or it is a | |
3511 | -Bsymbolic link and the symbol is defined | |
3512 | locally, or the symbol was forced to be local | |
3513 | because of a version file. We must initialize | |
3514 | this entry in the global offset table. Since the | |
3515 | offset must always be a multiple of 4, we use the | |
3516 | least significant bit to record whether we have | |
3517 | initialized it already. | |
3518 | ||
3519 | When doing a dynamic link, we create a .rela.got | |
3520 | relocation entry to initialize the value. This | |
3521 | is done in the finish_dynamic_symbol routine. */ | |
3522 | if ((off & 1) != 0) | |
3523 | off &= ~1; | |
3524 | else | |
3525 | { | |
3526 | bfd_put_32 (output_bfd, relocation, | |
3527 | hplink->sgot->contents + off); | |
3528 | h->elf.got.offset |= 1; | |
3529 | } | |
3530 | } | |
3531 | ||
3532 | relocation = off; | |
3533 | } | |
3534 | else | |
3535 | { | |
3536 | /* Local symbol case. */ | |
3537 | bfd_vma off; | |
3538 | ||
3539 | BFD_ASSERT (local_got_offsets != NULL | |
3540 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
3541 | ||
3542 | off = local_got_offsets[r_symndx]; | |
3543 | ||
3544 | /* The offset must always be a multiple of 4. We use | |
3545 | the least significant bit to record whether we have | |
3546 | already generated the necessary reloc. */ | |
3547 | if ((off & 1) != 0) | |
3548 | off &= ~1; | |
3549 | else | |
3550 | { | |
3551 | bfd_put_32 (output_bfd, relocation, | |
3552 | hplink->sgot->contents + off); | |
3553 | ||
3554 | if (info->shared) | |
3555 | { | |
74d1c347 | 3556 | /* Output a dynamic *ABS* relocation for this |
30667bf3 AM |
3557 | GOT entry. In this case it is relative to |
3558 | the base of the object because the symbol | |
3559 | index is zero. */ | |
3560 | Elf_Internal_Rela outrel; | |
3561 | asection *srelgot = hplink->srelgot; | |
3562 | ||
3563 | outrel.r_offset = (off | |
3564 | + hplink->sgot->output_offset | |
3565 | + hplink->sgot->output_section->vma); | |
74d1c347 | 3566 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
3567 | outrel.r_addend = relocation; |
3568 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3569 | ((Elf32_External_Rela *) | |
3570 | srelgot->contents | |
3571 | + srelgot->reloc_count)); | |
3572 | ++srelgot->reloc_count; | |
3573 | } | |
252b5132 | 3574 | |
30667bf3 AM |
3575 | local_got_offsets[r_symndx] |= 1; |
3576 | } | |
252b5132 | 3577 | |
30667bf3 AM |
3578 | relocation = off; |
3579 | } | |
252b5132 | 3580 | |
30667bf3 AM |
3581 | /* Add the base of the GOT to the relocation value. */ |
3582 | relocation += (hplink->sgot->output_offset | |
3583 | + hplink->sgot->output_section->vma); | |
3584 | break; | |
252b5132 | 3585 | |
30667bf3 AM |
3586 | case R_PARISC_PLABEL14R: |
3587 | case R_PARISC_PLABEL21L: | |
3588 | case R_PARISC_PLABEL32: | |
74d1c347 | 3589 | if (hplink->root.dynamic_sections_created) |
252b5132 | 3590 | { |
74d1c347 AM |
3591 | bfd_vma off; |
3592 | ||
3593 | /* If we have a global symbol with a PLT slot, then | |
3594 | redirect this relocation to it. */ | |
3595 | if (h != NULL) | |
3596 | { | |
3597 | off = h->elf.plt.offset; | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | int indx; | |
3602 | ||
3603 | indx = r_symndx + symtab_hdr->sh_info; | |
3604 | off = local_got_offsets[indx]; | |
3605 | ||
3606 | /* As for the local .got entry case, we use the last | |
3607 | bit to record whether we've already initialised | |
3608 | this local .plt entry. */ | |
3609 | if ((off & 1) != 0) | |
3610 | off &= ~1; | |
3611 | else | |
3612 | { | |
3613 | bfd_put_32 (output_bfd, | |
3614 | relocation, | |
3615 | hplink->splt->contents + off); | |
3616 | bfd_put_32 (output_bfd, | |
3617 | elf_gp (hplink->splt->output_section->owner), | |
3618 | hplink->splt->contents + off + 4); | |
3619 | ||
3620 | if (info->shared) | |
3621 | { | |
3622 | /* Output a dynamic IPLT relocation for this | |
3623 | PLT entry. */ | |
3624 | Elf_Internal_Rela outrel; | |
3625 | asection *srelplt = hplink->srelplt; | |
3626 | ||
3627 | outrel.r_offset = (off | |
3628 | + hplink->splt->output_offset | |
3629 | + hplink->splt->output_section->vma); | |
3630 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3631 | outrel.r_addend = relocation; | |
3632 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
3633 | ((Elf32_External_Rela *) | |
3634 | srelplt->contents | |
3635 | + srelplt->reloc_count)); | |
3636 | ++srelplt->reloc_count; | |
3637 | } | |
3638 | ||
3639 | local_got_offsets[indx] |= 1; | |
3640 | } | |
3641 | } | |
3642 | ||
3643 | BFD_ASSERT (off < (bfd_vma) -2); | |
3644 | ||
3645 | /* PLABELs contain function pointers. Relocation is to | |
3646 | the entry for the function in the .plt. The magic +2 | |
3647 | offset signals to $$dyncall that the function pointer | |
3648 | is in the .plt and thus has a gp pointer too. | |
3649 | Exception: Undefined PLABELs should have a value of | |
3650 | zero. */ | |
3651 | if (h == NULL | |
3652 | || (h->elf.root.type != bfd_link_hash_undefweak | |
3653 | && h->elf.root.type != bfd_link_hash_undefined)) | |
3654 | { | |
3655 | relocation = (off | |
3656 | + hplink->splt->output_offset | |
3657 | + hplink->splt->output_section->vma | |
3658 | + 2); | |
3659 | } | |
3660 | plabel = 1; | |
30667bf3 AM |
3661 | } |
3662 | /* Fall through and possibly emit a dynamic relocation. */ | |
3663 | ||
3664 | case R_PARISC_DIR17F: | |
3665 | case R_PARISC_DIR17R: | |
3666 | case R_PARISC_DIR14R: | |
3667 | case R_PARISC_DIR21L: | |
3668 | case R_PARISC_DPREL14F: | |
3669 | case R_PARISC_DPREL14R: | |
3670 | case R_PARISC_DPREL21L: | |
3671 | case R_PARISC_DIR32: | |
3672 | /* The reloc types handled here and this conditional | |
3673 | expression must match the code in check_relocs and | |
3674 | hppa_discard_copies. ie. We need exactly the same | |
3675 | condition as in check_relocs, with some extra conditions | |
3676 | (dynindx test in this case) to cater for relocs removed | |
3677 | by hppa_discard_copies. */ | |
3678 | if ((input_section->flags & SEC_ALLOC) != 0 | |
3679 | && info->shared | |
3680 | #if RELATIVE_DYNAMIC_RELOCS | |
3681 | && (is_absolute_reloc (r_type) | |
3682 | || ((!info->symbolic | |
3683 | || (h != NULL | |
3684 | && ((h->elf.elf_link_hash_flags | |
3685 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3686 | || h->elf.root.type == bfd_link_hash_defweak))) | |
3687 | && (h == NULL || h->elf.dynindx != -1))) | |
3688 | #endif | |
3689 | ) | |
3690 | { | |
3691 | Elf_Internal_Rela outrel; | |
3692 | boolean skip; | |
252b5132 | 3693 | |
30667bf3 AM |
3694 | /* When generating a shared object, these relocations |
3695 | are copied into the output file to be resolved at run | |
3696 | time. */ | |
252b5132 | 3697 | |
30667bf3 | 3698 | if (sreloc == NULL) |
edd21aca | 3699 | { |
30667bf3 AM |
3700 | const char *name; |
3701 | ||
3702 | name = (bfd_elf_string_from_elf_section | |
3703 | (input_bfd, | |
3704 | elf_elfheader (input_bfd)->e_shstrndx, | |
3705 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3706 | if (name == NULL) | |
3707 | return false; | |
3708 | sreloc = bfd_get_section_by_name (dynobj, name); | |
3709 | BFD_ASSERT (sreloc != NULL); | |
edd21aca | 3710 | } |
252b5132 | 3711 | |
30667bf3 AM |
3712 | outrel.r_offset = rel->r_offset; |
3713 | outrel.r_addend = rel->r_addend; | |
3714 | skip = false; | |
3715 | if (elf_section_data (input_section)->stab_info != NULL) | |
edd21aca | 3716 | { |
30667bf3 AM |
3717 | bfd_vma off; |
3718 | ||
3719 | off = (_bfd_stab_section_offset | |
74d1c347 | 3720 | (output_bfd, &hplink->root.stab_info, |
30667bf3 AM |
3721 | input_section, |
3722 | &elf_section_data (input_section)->stab_info, | |
3723 | rel->r_offset)); | |
3724 | if (off == (bfd_vma) -1) | |
3725 | skip = true; | |
3726 | outrel.r_offset = off; | |
edd21aca | 3727 | } |
252b5132 | 3728 | |
30667bf3 AM |
3729 | outrel.r_offset += (input_section->output_offset |
3730 | + input_section->output_section->vma); | |
3731 | ||
3732 | if (skip) | |
252b5132 | 3733 | { |
30667bf3 | 3734 | memset (&outrel, 0, sizeof (outrel)); |
252b5132 | 3735 | } |
74d1c347 AM |
3736 | else if (h != NULL |
3737 | && h->elf.dynindx != -1 | |
3738 | && (plabel | |
3739 | || !info->symbolic | |
30667bf3 AM |
3740 | || (h->elf.elf_link_hash_flags |
3741 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 3742 | { |
30667bf3 AM |
3743 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); |
3744 | } | |
3745 | else /* It's a local symbol, or one marked to become local. */ | |
3746 | { | |
3747 | int indx = 0; | |
edd21aca | 3748 | |
30667bf3 AM |
3749 | /* Add the absolute offset of the symbol. */ |
3750 | outrel.r_addend += relocation; | |
edd21aca | 3751 | |
74d1c347 AM |
3752 | /* Global plabels need to be processed by the |
3753 | dynamic linker so that functions have at most one | |
3754 | fptr. For this reason, we need to differentiate | |
3755 | between global and local plabels, which we do by | |
3756 | providing the function symbol for a global plabel | |
3757 | reloc, and no symbol for local plabels. */ | |
3758 | if (! plabel | |
3759 | && sym_sec != NULL | |
30667bf3 AM |
3760 | && sym_sec->output_section != NULL |
3761 | && ! bfd_is_abs_section (sym_sec)) | |
252b5132 | 3762 | { |
30667bf3 AM |
3763 | indx = elf_section_data (sym_sec->output_section)->dynindx; |
3764 | /* We are turning this relocation into one | |
3765 | against a section symbol, so subtract out the | |
3766 | output section's address but not the offset | |
3767 | of the input section in the output section. */ | |
3768 | outrel.r_addend -= sym_sec->output_section->vma; | |
252b5132 | 3769 | } |
252b5132 | 3770 | |
30667bf3 AM |
3771 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
3772 | } | |
edd21aca | 3773 | |
30667bf3 AM |
3774 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
3775 | ((Elf32_External_Rela *) | |
3776 | sreloc->contents | |
3777 | + sreloc->reloc_count)); | |
3778 | ++sreloc->reloc_count; | |
3779 | } | |
3780 | break; | |
edd21aca | 3781 | |
30667bf3 AM |
3782 | default: |
3783 | break; | |
3784 | } | |
252b5132 | 3785 | |
30667bf3 | 3786 | r = final_link_relocate (input_section, contents, rel, relocation, |
25f72752 | 3787 | hplink, sym_sec, h); |
252b5132 | 3788 | |
30667bf3 AM |
3789 | if (r == bfd_reloc_ok) |
3790 | continue; | |
252b5132 | 3791 | |
30667bf3 AM |
3792 | if (h != NULL) |
3793 | sym_name = h->elf.root.root.string; | |
3794 | else | |
3795 | { | |
3796 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
3797 | symtab_hdr->sh_link, | |
3798 | sym->st_name); | |
3799 | if (sym_name == NULL) | |
3800 | return false; | |
3801 | if (*sym_name == '\0') | |
3802 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
3803 | } | |
edd21aca | 3804 | |
30667bf3 | 3805 | howto = elf_hppa_howto_table + r_type; |
252b5132 | 3806 | |
30667bf3 AM |
3807 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported) |
3808 | { | |
3809 | (*_bfd_error_handler) | |
3810 | (_("%s(%s+0x%lx): cannot handle %s for %s"), | |
3811 | bfd_get_filename (input_bfd), | |
3812 | input_section->name, | |
3813 | (long) rel->r_offset, | |
3814 | howto->name, | |
3815 | sym_name); | |
3816 | } | |
3817 | else | |
3818 | { | |
3819 | if (!((*info->callbacks->reloc_overflow) | |
3820 | (info, sym_name, howto->name, (bfd_vma) 0, | |
3821 | input_bfd, input_section, rel->r_offset))) | |
3822 | return false; | |
3823 | } | |
3824 | } | |
edd21aca | 3825 | |
30667bf3 AM |
3826 | return true; |
3827 | } | |
252b5132 | 3828 | |
edd21aca | 3829 | |
30667bf3 AM |
3830 | /* Finish up dynamic symbol handling. We set the contents of various |
3831 | dynamic sections here. */ | |
252b5132 | 3832 | |
30667bf3 AM |
3833 | static boolean |
3834 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) | |
3835 | bfd *output_bfd; | |
3836 | struct bfd_link_info *info; | |
3837 | struct elf_link_hash_entry *h; | |
3838 | Elf_Internal_Sym *sym; | |
3839 | { | |
3840 | struct elf32_hppa_link_hash_table *hplink; | |
3841 | bfd *dynobj; | |
edd21aca | 3842 | |
30667bf3 | 3843 | hplink = hppa_link_hash_table (info); |
74d1c347 | 3844 | dynobj = hplink->root.dynobj; |
30667bf3 | 3845 | |
30667bf3 AM |
3846 | if (h->plt.offset != (bfd_vma) -1) |
3847 | { | |
3848 | bfd_vma value; | |
3849 | Elf_Internal_Rela rel; | |
3850 | ||
3851 | /* This symbol has an entry in the procedure linkage table. Set | |
3852 | it up. | |
3853 | ||
3854 | The format of a plt entry is | |
74d1c347 AM |
3855 | <funcaddr> |
3856 | <__gp> | |
3857 | <used by ld.so> | |
3858 | ||
3859 | The last field is present only for plt entries that are used | |
3860 | by global plabels. */ | |
30667bf3 AM |
3861 | |
3862 | /* We do not actually care about the value in the PLT entry if | |
3863 | we are creating a shared library and the symbol is still | |
3864 | undefined; We create a dynamic relocation to fill in the | |
3865 | correct value. */ | |
3866 | value = 0; | |
3867 | if (h->root.type == bfd_link_hash_defined | |
3868 | || h->root.type == bfd_link_hash_defweak) | |
3869 | { | |
3870 | value = h->root.u.def.value; | |
3871 | if (h->root.u.def.section->output_section != NULL) | |
3872 | value += (h->root.u.def.section->output_offset | |
3873 | + h->root.u.def.section->output_section->vma); | |
252b5132 | 3874 | } |
edd21aca | 3875 | |
74d1c347 AM |
3876 | bfd_put_32 (hplink->splt->owner, |
3877 | value, | |
30667bf3 | 3878 | hplink->splt->contents + h->plt.offset); |
74d1c347 AM |
3879 | bfd_put_32 (hplink->splt->owner, |
3880 | elf_gp (hplink->splt->output_section->owner), | |
30667bf3 | 3881 | hplink->splt->contents + h->plt.offset + 4); |
74d1c347 AM |
3882 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE |
3883 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel | |
30667bf3 | 3884 | && h->dynindx != -1) |
74d1c347 AM |
3885 | { |
3886 | memset (hplink->splt->contents + h->plt.offset + 8, | |
3887 | 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE); | |
3888 | } | |
3889 | ||
3890 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
30667bf3 AM |
3891 | { |
3892 | /* Create a dynamic IPLT relocation for this entry. */ | |
3893 | rel.r_offset = (h->plt.offset | |
3894 | + hplink->splt->output_offset | |
3895 | + hplink->splt->output_section->vma); | |
74d1c347 AM |
3896 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs |
3897 | && h->dynindx != -1) | |
3898 | { | |
3899 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); | |
3900 | rel.r_addend = 0; | |
3901 | } | |
3902 | else | |
3903 | { | |
3904 | /* This symbol has been marked to become local, and is | |
3905 | used by a plabel so must be kept in the .plt. */ | |
3906 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3907 | rel.r_addend = value; | |
3908 | } | |
30667bf3 AM |
3909 | |
3910 | bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner, | |
3911 | &rel, | |
3912 | ((Elf32_External_Rela *) | |
3913 | hplink->srelplt->contents | |
3914 | + hplink->srelplt->reloc_count)); | |
3915 | hplink->srelplt->reloc_count++; | |
3916 | } | |
3917 | ||
3918 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3919 | { | |
3920 | /* Mark the symbol as undefined, rather than as defined in | |
3921 | the .plt section. Leave the value alone. */ | |
3922 | sym->st_shndx = SHN_UNDEF; | |
3923 | } | |
3924 | } | |
edd21aca | 3925 | |
30667bf3 AM |
3926 | if (h->got.offset != (bfd_vma) -1) |
3927 | { | |
3928 | Elf_Internal_Rela rel; | |
3929 | ||
3930 | /* This symbol has an entry in the global offset table. Set it | |
3931 | up. */ | |
3932 | ||
3933 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) | |
3934 | + hplink->sgot->output_offset | |
3935 | + hplink->sgot->output_section->vma); | |
3936 | ||
3937 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3938 | symbol is defined locally or was forced to be local because | |
3939 | of a version file, we just want to emit a RELATIVE reloc. | |
3940 | The entry in the global offset table will already have been | |
3941 | initialized in the relocate_section function. */ | |
74d1c347 | 3942 | if (! hplink->root.dynamic_sections_created |
30667bf3 AM |
3943 | || (info->shared |
3944 | && (info->symbolic || h->dynindx == -1) | |
3945 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
3946 | { | |
74d1c347 | 3947 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
3948 | rel.r_addend = (h->root.u.def.value |
3949 | + h->root.u.def.section->output_offset | |
3950 | + h->root.u.def.section->output_section->vma); | |
3951 | } | |
3952 | else | |
3953 | { | |
3954 | BFD_ASSERT((h->got.offset & 1) == 0); | |
3955 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
3956 | hplink->sgot->contents + h->got.offset); | |
3957 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); | |
3958 | rel.r_addend = 0; | |
3959 | } | |
edd21aca | 3960 | |
30667bf3 AM |
3961 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
3962 | ((Elf32_External_Rela *) | |
3963 | hplink->srelgot->contents | |
3964 | + hplink->srelgot->reloc_count)); | |
3965 | ++hplink->srelgot->reloc_count; | |
3966 | } | |
edd21aca | 3967 | |
30667bf3 AM |
3968 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
3969 | { | |
3970 | asection *s; | |
3971 | Elf_Internal_Rela rel; | |
3972 | ||
3973 | /* This symbol needs a copy reloc. Set it up. */ | |
3974 | ||
3975 | BFD_ASSERT (h->dynindx != -1 | |
3976 | && (h->root.type == bfd_link_hash_defined | |
3977 | || h->root.type == bfd_link_hash_defweak)); | |
3978 | ||
3979 | s = hplink->srelbss; | |
3980 | ||
3981 | rel.r_offset = (h->root.u.def.value | |
3982 | + h->root.u.def.section->output_offset | |
3983 | + h->root.u.def.section->output_section->vma); | |
3984 | rel.r_addend = 0; | |
3985 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); | |
3986 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
3987 | ((Elf32_External_Rela *) s->contents | |
3988 | + s->reloc_count)); | |
3989 | ++s->reloc_count; | |
3990 | } | |
3991 | ||
3992 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3993 | if (h->root.root.string[0] == '_' | |
3994 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3995 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) | |
3996 | { | |
3997 | sym->st_shndx = SHN_ABS; | |
3998 | } | |
3999 | ||
4000 | return true; | |
4001 | } | |
4002 | ||
4003 | ||
4004 | /* Finish up the dynamic sections. */ | |
4005 | ||
4006 | static boolean | |
4007 | elf32_hppa_finish_dynamic_sections (output_bfd, info) | |
4008 | bfd *output_bfd; | |
4009 | struct bfd_link_info *info; | |
4010 | { | |
4011 | bfd *dynobj; | |
4012 | struct elf32_hppa_link_hash_table *hplink; | |
4013 | asection *sdyn; | |
4014 | ||
30667bf3 | 4015 | hplink = hppa_link_hash_table (info); |
74d1c347 | 4016 | dynobj = hplink->root.dynobj; |
30667bf3 AM |
4017 | |
4018 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4019 | ||
74d1c347 | 4020 | if (hplink->root.dynamic_sections_created) |
30667bf3 AM |
4021 | { |
4022 | Elf32_External_Dyn *dyncon, *dynconend; | |
4023 | ||
4024 | BFD_ASSERT (sdyn != NULL); | |
4025 | ||
4026 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4027 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4028 | for (; dyncon < dynconend; dyncon++) | |
edd21aca | 4029 | { |
30667bf3 AM |
4030 | Elf_Internal_Dyn dyn; |
4031 | asection *s; | |
4032 | ||
4033 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4034 | ||
4035 | switch (dyn.d_tag) | |
4036 | { | |
4037 | default: | |
4038 | break; | |
4039 | ||
4040 | case DT_PLTGOT: | |
4041 | /* Use PLTGOT to set the GOT register. */ | |
4042 | dyn.d_un.d_ptr = elf_gp (output_bfd); | |
4043 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4044 | break; | |
4045 | ||
4046 | case DT_JMPREL: | |
4047 | s = hplink->srelplt; | |
4048 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4049 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4050 | break; | |
4051 | ||
4052 | case DT_PLTRELSZ: | |
4053 | s = hplink->srelplt; | |
4054 | if (s->_cooked_size != 0) | |
4055 | dyn.d_un.d_val = s->_cooked_size; | |
4056 | else | |
4057 | dyn.d_un.d_val = s->_raw_size; | |
4058 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4059 | break; | |
74d1c347 AM |
4060 | |
4061 | case DT_INIT: | |
4062 | case DT_FINI: | |
4063 | { | |
4064 | struct elf_link_hash_entry *h; | |
4065 | const char *funcname; | |
4066 | ||
4067 | if (dyn.d_tag == DT_INIT) | |
4068 | funcname = info->init_function; | |
4069 | else | |
4070 | funcname = info->fini_function; | |
4071 | ||
4072 | h = elf_link_hash_lookup (&hplink->root, funcname, | |
4073 | false, false, false); | |
4074 | ||
4075 | /* This is a function pointer. The magic +2 offset | |
4076 | signals to $$dyncall that the function pointer | |
4077 | is in the .plt and thus has a gp pointer too. */ | |
4078 | dyn.d_un.d_ptr = (h->plt.offset | |
4079 | + hplink->splt->output_offset | |
4080 | + hplink->splt->output_section->vma | |
4081 | + 2); | |
4082 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4083 | break; | |
4084 | } | |
30667bf3 | 4085 | } |
edd21aca | 4086 | } |
252b5132 | 4087 | } |
edd21aca | 4088 | |
30667bf3 AM |
4089 | if (hplink->sgot->_raw_size != 0) |
4090 | { | |
74d1c347 AM |
4091 | /* Fill in the first entry in the global offset table. |
4092 | We use it to point to our dynamic section, if we have one. */ | |
30667bf3 AM |
4093 | bfd_put_32 (output_bfd, |
4094 | (sdyn != NULL | |
4095 | ? sdyn->output_section->vma + sdyn->output_offset | |
4096 | : (bfd_vma) 0), | |
4097 | hplink->sgot->contents); | |
4098 | ||
74d1c347 AM |
4099 | /* The second entry is reserved for use by the dynamic linker. */ |
4100 | bfd_put_32 (output_bfd, (bfd_vma) 0, hplink->sgot->contents + 4); | |
4101 | ||
30667bf3 | 4102 | /* Set .got entry size. */ |
74d1c347 AM |
4103 | elf_section_data (hplink->sgot->output_section) |
4104 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
30667bf3 AM |
4105 | } |
4106 | ||
4107 | /* Set plt entry size. */ | |
4108 | if (hplink->splt->_raw_size != 0) | |
74d1c347 AM |
4109 | elf_section_data (hplink->splt->output_section) |
4110 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; | |
30667bf3 | 4111 | |
252b5132 | 4112 | return true; |
30667bf3 | 4113 | } |
252b5132 | 4114 | |
edd21aca | 4115 | |
30667bf3 AM |
4116 | /* Called when writing out an object file to decide the type of a |
4117 | symbol. */ | |
4118 | static int | |
4119 | elf32_hppa_elf_get_symbol_type (elf_sym, type) | |
4120 | Elf_Internal_Sym *elf_sym; | |
4121 | int type; | |
4122 | { | |
4123 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
4124 | return STT_PARISC_MILLI; | |
4125 | else | |
4126 | return type; | |
252b5132 RH |
4127 | } |
4128 | ||
30667bf3 | 4129 | |
252b5132 | 4130 | /* Misc BFD support code. */ |
30667bf3 AM |
4131 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name |
4132 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
4133 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4134 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
252b5132 | 4135 | |
252b5132 | 4136 | /* Stuff for the BFD linker. */ |
30667bf3 AM |
4137 | #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link |
4138 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create | |
4139 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook | |
4140 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol | |
4141 | #define elf_backend_check_relocs elf32_hppa_check_relocs | |
4142 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections | |
4143 | #define elf_backend_fake_sections elf_hppa_fake_sections | |
4144 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
74d1c347 | 4145 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol |
30667bf3 AM |
4146 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol |
4147 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections | |
4148 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections | |
4149 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook | |
4150 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook | |
4151 | #define elf_backend_object_p elf32_hppa_object_p | |
4152 | #define elf_backend_final_write_processing elf_hppa_final_write_processing | |
4153 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type | |
4154 | ||
4155 | #define elf_backend_can_gc_sections 1 | |
4156 | #define elf_backend_plt_alignment 2 | |
4157 | #define elf_backend_want_got_plt 0 | |
4158 | #define elf_backend_plt_readonly 0 | |
4159 | #define elf_backend_want_plt_sym 0 | |
74d1c347 | 4160 | #define elf_backend_got_header_size 8 |
252b5132 RH |
4161 | |
4162 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec | |
4163 | #define TARGET_BIG_NAME "elf32-hppa" | |
4164 | #define ELF_ARCH bfd_arch_hppa | |
4165 | #define ELF_MACHINE_CODE EM_PARISC | |
4166 | #define ELF_MAXPAGESIZE 0x1000 | |
4167 | ||
4168 | #include "elf32-target.h" |