Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD back-end for HP PA-RISC ELF files. |
e5094212 AM |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, |
3 | 2002 Free Software Foundation, Inc. | |
252b5132 | 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 | |
edd21aca | 35 | #include "elf32-hppa.h" |
189c6563 | 36 | #include "elf-hppa.h" |
9e103c9c | 37 | |
74d1c347 AM |
38 | /* In order to gain some understanding of code in this file without |
39 | knowing all the intricate details of the linker, note the | |
40 | following: | |
41 | ||
42 | Functions named elf32_hppa_* are called by external routines, other | |
43 | functions are only called locally. elf32_hppa_* functions appear | |
44 | in this file more or less in the order in which they are called | |
45 | from external routines. eg. elf32_hppa_check_relocs is called | |
46 | early in the link process, elf32_hppa_finish_dynamic_sections is | |
47 | one of the last functions. */ | |
48 | ||
edd21aca | 49 | /* We use two hash tables to hold information for linking PA ELF objects. |
252b5132 RH |
50 | |
51 | The first is the elf32_hppa_link_hash_table which is derived | |
52 | from the standard ELF linker hash table. We use this as a place to | |
53 | attach other hash tables and static information. | |
54 | ||
55 | The second is the stub hash table which is derived from the | |
56 | base BFD hash table. The stub hash table holds the information | |
30667bf3 AM |
57 | necessary to build the linker stubs during a link. |
58 | ||
59 | There are a number of different stubs generated by the linker. | |
60 | ||
61 | Long branch stub: | |
62 | : ldil LR'X,%r1 | |
63 | : be,n RR'X(%sr4,%r1) | |
64 | ||
65 | PIC long branch stub: | |
66 | : b,l .+8,%r1 | |
3ee1d854 AM |
67 | : addil LR'X - ($PIC_pcrel$0 - 4),%r1 |
68 | : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) | |
30667bf3 AM |
69 | |
70 | Import stub to call shared library routine from normal object file | |
71 | (single sub-space version) | |
3ee1d854 AM |
72 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point |
73 | : ldw RR'lt_ptr+ltoff(%r1),%r21 | |
30667bf3 | 74 | : bv %r0(%r21) |
3ee1d854 | 75 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. |
30667bf3 AM |
76 | |
77 | Import stub to call shared library routine from shared library | |
78 | (single sub-space version) | |
3ee1d854 AM |
79 | : addil LR'ltoff,%r19 ; get procedure entry point |
80 | : ldw RR'ltoff(%r1),%r21 | |
30667bf3 | 81 | : bv %r0(%r21) |
3ee1d854 | 82 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. |
30667bf3 AM |
83 | |
84 | Import stub to call shared library routine from normal object file | |
85 | (multiple sub-space support) | |
3ee1d854 AM |
86 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point |
87 | : ldw RR'lt_ptr+ltoff(%r1),%r21 | |
88 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. | |
30667bf3 AM |
89 | : ldsid (%r21),%r1 |
90 | : mtsp %r1,%sr0 | |
91 | : be 0(%sr0,%r21) ; branch to target | |
92 | : stw %rp,-24(%sp) ; save rp | |
93 | ||
94 | Import stub to call shared library routine from shared library | |
95 | (multiple sub-space support) | |
3ee1d854 AM |
96 | : addil LR'ltoff,%r19 ; get procedure entry point |
97 | : ldw RR'ltoff(%r1),%r21 | |
98 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. | |
30667bf3 AM |
99 | : ldsid (%r21),%r1 |
100 | : mtsp %r1,%sr0 | |
101 | : be 0(%sr0,%r21) ; branch to target | |
102 | : stw %rp,-24(%sp) ; save rp | |
103 | ||
104 | Export stub to return from shared lib routine (multiple sub-space support) | |
105 | One of these is created for each exported procedure in a shared | |
106 | library (and stored in the shared lib). Shared lib routines are | |
107 | called via the first instruction in the export stub so that we can | |
108 | do an inter-space return. Not required for single sub-space. | |
109 | : bl,n X,%rp ; trap the return | |
110 | : nop | |
111 | : ldw -24(%sp),%rp ; restore the original rp | |
112 | : ldsid (%rp),%r1 | |
113 | : mtsp %r1,%sr0 | |
74d1c347 | 114 | : be,n 0(%sr0,%rp) ; inter-space return */ |
30667bf3 AM |
115 | |
116 | #define PLT_ENTRY_SIZE 8 | |
117 | #define GOT_ENTRY_SIZE 4 | |
118 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
119 | ||
47d89dba AM |
120 | static const bfd_byte plt_stub[] = |
121 | { | |
122 | 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */ | |
123 | 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */ | |
124 | 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */ | |
125 | #define PLT_STUB_ENTRY (3*4) | |
126 | 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */ | |
127 | 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */ | |
128 | 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */ | |
129 | 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */ | |
130 | }; | |
131 | ||
30667bf3 AM |
132 | /* Section name for stubs is the associated section name plus this |
133 | string. */ | |
134 | #define STUB_SUFFIX ".stub" | |
135 | ||
98ceb8ce AM |
136 | /* We don't need to copy certain PC- or GP-relative dynamic relocs |
137 | into a shared object's dynamic section. All the relocs of the | |
138 | limited class we are interested in, are absolute. */ | |
139 | #ifndef RELATIVE_DYNRELOCS | |
140 | #define RELATIVE_DYNRELOCS 0 | |
446f2863 | 141 | #define IS_ABSOLUTE_RELOC(r_type) 1 |
30667bf3 AM |
142 | #endif |
143 | ||
30667bf3 AM |
144 | enum elf32_hppa_stub_type { |
145 | hppa_stub_long_branch, | |
146 | hppa_stub_long_branch_shared, | |
147 | hppa_stub_import, | |
148 | hppa_stub_import_shared, | |
149 | hppa_stub_export, | |
150 | hppa_stub_none | |
151 | }; | |
152 | ||
30667bf3 | 153 | struct elf32_hppa_stub_hash_entry { |
252b5132 | 154 | |
edd21aca | 155 | /* Base hash table entry structure. */ |
252b5132 RH |
156 | struct bfd_hash_entry root; |
157 | ||
edd21aca AM |
158 | /* The stub section. */ |
159 | asection *stub_sec; | |
160 | ||
161 | /* Offset within stub_sec of the beginning of this stub. */ | |
30667bf3 | 162 | bfd_vma stub_offset; |
252b5132 RH |
163 | |
164 | /* Given the symbol's value and its section we can determine its final | |
165 | value when building the stubs (so the stub knows where to jump. */ | |
30667bf3 | 166 | bfd_vma target_value; |
252b5132 | 167 | asection *target_section; |
30667bf3 AM |
168 | |
169 | enum elf32_hppa_stub_type stub_type; | |
170 | ||
171 | /* The symbol table entry, if any, that this was derived from. */ | |
172 | struct elf32_hppa_link_hash_entry *h; | |
173 | ||
25f72752 AM |
174 | /* Where this stub is being called from, or, in the case of combined |
175 | stub sections, the first input section in the group. */ | |
176 | asection *id_sec; | |
252b5132 RH |
177 | }; |
178 | ||
30667bf3 AM |
179 | struct elf32_hppa_link_hash_entry { |
180 | ||
181 | struct elf_link_hash_entry elf; | |
182 | ||
183 | /* A pointer to the most recently used stub hash entry against this | |
184 | symbol. */ | |
185 | struct elf32_hppa_stub_hash_entry *stub_cache; | |
186 | ||
30667bf3 AM |
187 | /* Used to count relocations for delayed sizing of relocation |
188 | sections. */ | |
189 | struct elf32_hppa_dyn_reloc_entry { | |
190 | ||
191 | /* Next relocation in the chain. */ | |
192 | struct elf32_hppa_dyn_reloc_entry *next; | |
193 | ||
98ceb8ce AM |
194 | /* The input section of the reloc. */ |
195 | asection *sec; | |
30667bf3 AM |
196 | |
197 | /* Number of relocs copied in this section. */ | |
198 | bfd_size_type count; | |
98ceb8ce AM |
199 | |
200 | #if RELATIVE_DYNRELOCS | |
201 | /* Number of relative relocs copied for the input section. */ | |
202 | bfd_size_type relative_count; | |
203 | #endif | |
204 | } *dyn_relocs; | |
30667bf3 AM |
205 | |
206 | /* Set during a static link if we detect a function is PIC. */ | |
12cca0d2 AM |
207 | unsigned int maybe_pic_call:1; |
208 | ||
209 | /* Set if the only reason we need a .plt entry is for a non-PIC to | |
210 | PIC function call. */ | |
74d1c347 AM |
211 | unsigned int pic_call:1; |
212 | ||
213 | /* Set if this symbol is used by a plabel reloc. */ | |
214 | unsigned int plabel:1; | |
30667bf3 AM |
215 | }; |
216 | ||
30667bf3 AM |
217 | struct elf32_hppa_link_hash_table { |
218 | ||
252b5132 | 219 | /* The main hash table. */ |
ebe50bae | 220 | struct elf_link_hash_table elf; |
252b5132 RH |
221 | |
222 | /* The stub hash table. */ | |
edd21aca | 223 | struct bfd_hash_table stub_hash_table; |
252b5132 | 224 | |
30667bf3 AM |
225 | /* Linker stub bfd. */ |
226 | bfd *stub_bfd; | |
227 | ||
30667bf3 AM |
228 | /* Linker call-backs. */ |
229 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
230 | void (*layout_sections_again) PARAMS ((void)); | |
231 | ||
25f72752 AM |
232 | /* Array to keep track of which stub sections have been created, and |
233 | information on stub grouping. */ | |
234 | struct map_stub { | |
235 | /* This is the section to which stubs in the group will be | |
236 | attached. */ | |
237 | asection *link_sec; | |
238 | /* The stub section. */ | |
239 | asection *stub_sec; | |
25f72752 | 240 | } *stub_group; |
30667bf3 | 241 | |
30667bf3 AM |
242 | /* Short-cuts to get to dynamic linker sections. */ |
243 | asection *sgot; | |
244 | asection *srelgot; | |
245 | asection *splt; | |
246 | asection *srelplt; | |
247 | asection *sdynbss; | |
248 | asection *srelbss; | |
47d89dba | 249 | |
c46b7515 AM |
250 | /* Used during a final link to store the base of the text and data |
251 | segments so that we can perform SEGREL relocations. */ | |
252 | bfd_vma text_segment_base; | |
253 | bfd_vma data_segment_base; | |
254 | ||
47d89dba AM |
255 | /* Whether we support multiple sub-spaces for shared libs. */ |
256 | unsigned int multi_subspace:1; | |
257 | ||
258 | /* Flags set when PCREL12F and PCREL17F branches detected. Used to | |
259 | select suitable defaults for the stub group size. */ | |
260 | unsigned int has_12bit_branch:1; | |
261 | unsigned int has_17bit_branch:1; | |
262 | ||
263 | /* Set if we need a .plt stub to support lazy dynamic linking. */ | |
264 | unsigned int need_plt_stub:1; | |
ec338859 AM |
265 | |
266 | /* Small local sym to section mapping cache. */ | |
267 | struct sym_sec_cache sym_sec; | |
252b5132 RH |
268 | }; |
269 | ||
30667bf3 AM |
270 | /* Various hash macros and functions. */ |
271 | #define hppa_link_hash_table(p) \ | |
edd21aca | 272 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
252b5132 | 273 | |
30667bf3 AM |
274 | #define hppa_stub_hash_lookup(table, string, create, copy) \ |
275 | ((struct elf32_hppa_stub_hash_entry *) \ | |
276 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
277 | ||
278 | static struct bfd_hash_entry *stub_hash_newfunc | |
279 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
edd21aca | 280 | |
30667bf3 | 281 | static struct bfd_hash_entry *hppa_link_hash_newfunc |
edd21aca | 282 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 RH |
283 | |
284 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create | |
285 | PARAMS ((bfd *)); | |
286 | ||
e2d34d7d DJ |
287 | static void elf32_hppa_link_hash_table_free |
288 | PARAMS ((struct bfd_link_hash_table *)); | |
289 | ||
30667bf3 AM |
290 | /* Stub handling functions. */ |
291 | static char *hppa_stub_name | |
292 | PARAMS ((const asection *, const asection *, | |
293 | const struct elf32_hppa_link_hash_entry *, | |
294 | const Elf_Internal_Rela *)); | |
edd21aca | 295 | |
30667bf3 AM |
296 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry |
297 | PARAMS ((const asection *, const asection *, | |
298 | struct elf32_hppa_link_hash_entry *, | |
25f72752 AM |
299 | const Elf_Internal_Rela *, |
300 | struct elf32_hppa_link_hash_table *)); | |
edd21aca | 301 | |
30667bf3 | 302 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub |
25f72752 | 303 | PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *)); |
30667bf3 AM |
304 | |
305 | static enum elf32_hppa_stub_type hppa_type_of_stub | |
306 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
307 | struct elf32_hppa_link_hash_entry *, bfd_vma)); | |
308 | ||
309 | static boolean hppa_build_one_stub | |
310 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
311 | ||
312 | static boolean hppa_size_one_stub | |
313 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
314 | ||
30667bf3 AM |
315 | /* BFD and elf backend functions. */ |
316 | static boolean elf32_hppa_object_p PARAMS ((bfd *)); | |
252b5132 | 317 | |
edd21aca AM |
318 | static boolean elf32_hppa_add_symbol_hook |
319 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
320 | const char **, flagword *, asection **, bfd_vma *)); | |
252b5132 | 321 | |
30667bf3 AM |
322 | static boolean elf32_hppa_create_dynamic_sections |
323 | PARAMS ((bfd *, struct bfd_link_info *)); | |
252b5132 | 324 | |
ebe50bae AM |
325 | static void elf32_hppa_copy_indirect_symbol |
326 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
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 | 340 | static void elf32_hppa_hide_symbol |
e5094212 | 341 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); |
74d1c347 | 342 | |
30667bf3 AM |
343 | static boolean elf32_hppa_adjust_dynamic_symbol |
344 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
345 | ||
a8d02d66 AM |
346 | static boolean mark_PIC_calls |
347 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
348 | ||
e5ee5df1 | 349 | static boolean allocate_plt_static |
30667bf3 AM |
350 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
351 | ||
98ceb8ce AM |
352 | static boolean allocate_dynrelocs |
353 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
354 | ||
355 | static boolean readonly_dynrelocs | |
30667bf3 | 356 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
30667bf3 | 357 | |
d5c73c2f AM |
358 | static boolean clobber_millicode_symbols |
359 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); | |
360 | ||
30667bf3 AM |
361 | static boolean elf32_hppa_size_dynamic_sections |
362 | PARAMS ((bfd *, struct bfd_link_info *)); | |
363 | ||
c46b7515 AM |
364 | static boolean elf32_hppa_final_link |
365 | PARAMS ((bfd *, struct bfd_link_info *)); | |
366 | ||
367 | static void hppa_record_segment_addr | |
368 | PARAMS ((bfd *, asection *, PTR)); | |
369 | ||
30667bf3 AM |
370 | static bfd_reloc_status_type final_link_relocate |
371 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, | |
25f72752 | 372 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *, |
30667bf3 AM |
373 | struct elf32_hppa_link_hash_entry *)); |
374 | ||
375 | static boolean elf32_hppa_relocate_section | |
376 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
377 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
378 | ||
c46b7515 AM |
379 | static int hppa_unwind_entry_compare |
380 | PARAMS ((const PTR, const PTR)); | |
381 | ||
30667bf3 AM |
382 | static boolean elf32_hppa_finish_dynamic_symbol |
383 | PARAMS ((bfd *, struct bfd_link_info *, | |
384 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
385 | ||
98ceb8ce AM |
386 | static enum elf_reloc_type_class elf32_hppa_reloc_type_class |
387 | PARAMS ((const Elf_Internal_Rela *)); | |
388 | ||
30667bf3 AM |
389 | static boolean elf32_hppa_finish_dynamic_sections |
390 | PARAMS ((bfd *, struct bfd_link_info *)); | |
391 | ||
d952f17a AM |
392 | static void elf32_hppa_post_process_headers |
393 | PARAMS ((bfd *, struct bfd_link_info *)); | |
394 | ||
30667bf3 AM |
395 | static int elf32_hppa_elf_get_symbol_type |
396 | PARAMS ((Elf_Internal_Sym *, int)); | |
252b5132 | 397 | |
252b5132 RH |
398 | /* Assorted hash table functions. */ |
399 | ||
400 | /* Initialize an entry in the stub hash table. */ | |
401 | ||
402 | static struct bfd_hash_entry * | |
30667bf3 | 403 | stub_hash_newfunc (entry, table, string) |
252b5132 RH |
404 | struct bfd_hash_entry *entry; |
405 | struct bfd_hash_table *table; | |
406 | const char *string; | |
407 | { | |
252b5132 RH |
408 | /* Allocate the structure if it has not already been allocated by a |
409 | subclass. */ | |
ebe50bae | 410 | if (entry == NULL) |
30667bf3 | 411 | { |
ebe50bae AM |
412 | entry = bfd_hash_allocate (table, |
413 | sizeof (struct elf32_hppa_stub_hash_entry)); | |
414 | if (entry == NULL) | |
415 | return entry; | |
30667bf3 | 416 | } |
252b5132 RH |
417 | |
418 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
419 | entry = bfd_hash_newfunc (entry, table, string); |
420 | if (entry != NULL) | |
252b5132 | 421 | { |
ebe50bae AM |
422 | struct elf32_hppa_stub_hash_entry *eh; |
423 | ||
252b5132 | 424 | /* Initialize the local fields. */ |
ebe50bae AM |
425 | eh = (struct elf32_hppa_stub_hash_entry *) entry; |
426 | eh->stub_sec = NULL; | |
427 | eh->stub_offset = 0; | |
428 | eh->target_value = 0; | |
429 | eh->target_section = NULL; | |
430 | eh->stub_type = hppa_stub_long_branch; | |
431 | eh->h = NULL; | |
432 | eh->id_sec = NULL; | |
30667bf3 AM |
433 | } |
434 | ||
ebe50bae | 435 | return entry; |
30667bf3 AM |
436 | } |
437 | ||
30667bf3 AM |
438 | /* Initialize an entry in the link hash table. */ |
439 | ||
440 | static struct bfd_hash_entry * | |
441 | hppa_link_hash_newfunc (entry, table, string) | |
442 | struct bfd_hash_entry *entry; | |
443 | struct bfd_hash_table *table; | |
444 | const char *string; | |
445 | { | |
30667bf3 AM |
446 | /* Allocate the structure if it has not already been allocated by a |
447 | subclass. */ | |
ebe50bae | 448 | if (entry == NULL) |
30667bf3 | 449 | { |
ebe50bae AM |
450 | entry = bfd_hash_allocate (table, |
451 | sizeof (struct elf32_hppa_link_hash_entry)); | |
452 | if (entry == NULL) | |
453 | return entry; | |
30667bf3 AM |
454 | } |
455 | ||
456 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
457 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
458 | if (entry != NULL) | |
30667bf3 | 459 | { |
ebe50bae AM |
460 | struct elf32_hppa_link_hash_entry *eh; |
461 | ||
30667bf3 | 462 | /* Initialize the local fields. */ |
ebe50bae AM |
463 | eh = (struct elf32_hppa_link_hash_entry *) entry; |
464 | eh->stub_cache = NULL; | |
465 | eh->dyn_relocs = NULL; | |
466 | eh->maybe_pic_call = 0; | |
467 | eh->pic_call = 0; | |
468 | eh->plabel = 0; | |
252b5132 RH |
469 | } |
470 | ||
ebe50bae | 471 | return entry; |
252b5132 RH |
472 | } |
473 | ||
252b5132 RH |
474 | /* Create the derived linker hash table. The PA ELF port uses the derived |
475 | hash table to keep information specific to the PA ELF linker (without | |
476 | using static variables). */ | |
477 | ||
478 | static struct bfd_link_hash_table * | |
479 | elf32_hppa_link_hash_table_create (abfd) | |
480 | bfd *abfd; | |
481 | { | |
482 | struct elf32_hppa_link_hash_table *ret; | |
dc810e39 | 483 | bfd_size_type amt = sizeof (*ret); |
252b5132 | 484 | |
e2d34d7d | 485 | ret = (struct elf32_hppa_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
486 | if (ret == NULL) |
487 | return NULL; | |
edd21aca | 488 | |
ebe50bae | 489 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, hppa_link_hash_newfunc)) |
252b5132 | 490 | { |
e2d34d7d | 491 | free (ret); |
252b5132 RH |
492 | return NULL; |
493 | } | |
edd21aca AM |
494 | |
495 | /* Init the stub hash table too. */ | |
30667bf3 | 496 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) |
edd21aca AM |
497 | return NULL; |
498 | ||
30667bf3 | 499 | ret->stub_bfd = NULL; |
30667bf3 AM |
500 | ret->add_stub_section = NULL; |
501 | ret->layout_sections_again = NULL; | |
25f72752 | 502 | ret->stub_group = NULL; |
30667bf3 AM |
503 | ret->sgot = NULL; |
504 | ret->srelgot = NULL; | |
505 | ret->splt = NULL; | |
506 | ret->srelplt = NULL; | |
507 | ret->sdynbss = NULL; | |
508 | ret->srelbss = NULL; | |
c46b7515 AM |
509 | ret->text_segment_base = (bfd_vma) -1; |
510 | ret->data_segment_base = (bfd_vma) -1; | |
47d89dba AM |
511 | ret->multi_subspace = 0; |
512 | ret->has_12bit_branch = 0; | |
513 | ret->has_17bit_branch = 0; | |
514 | ret->need_plt_stub = 0; | |
ec338859 | 515 | ret->sym_sec.abfd = NULL; |
252b5132 | 516 | |
ebe50bae | 517 | return &ret->elf.root; |
252b5132 RH |
518 | } |
519 | ||
e2d34d7d DJ |
520 | /* Free the derived linker hash table. */ |
521 | ||
522 | static void | |
523 | elf32_hppa_link_hash_table_free (hash) | |
524 | struct bfd_link_hash_table *hash; | |
525 | { | |
526 | struct elf32_hppa_link_hash_table *ret | |
527 | = (struct elf32_hppa_link_hash_table *) hash; | |
528 | ||
529 | bfd_hash_table_free (&ret->stub_hash_table); | |
530 | _bfd_generic_link_hash_table_free (hash); | |
531 | } | |
532 | ||
30667bf3 AM |
533 | /* Build a name for an entry in the stub hash table. */ |
534 | ||
edd21aca | 535 | static char * |
30667bf3 | 536 | hppa_stub_name (input_section, sym_sec, hash, rel) |
edd21aca | 537 | const asection *input_section; |
30667bf3 AM |
538 | const asection *sym_sec; |
539 | const struct elf32_hppa_link_hash_entry *hash; | |
540 | const Elf_Internal_Rela *rel; | |
edd21aca AM |
541 | { |
542 | char *stub_name; | |
dc810e39 | 543 | bfd_size_type len; |
edd21aca | 544 | |
30667bf3 AM |
545 | if (hash) |
546 | { | |
547 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; | |
548 | stub_name = bfd_malloc (len); | |
549 | if (stub_name != NULL) | |
550 | { | |
551 | sprintf (stub_name, "%08x_%s+%x", | |
552 | input_section->id & 0xffffffff, | |
553 | hash->elf.root.root.string, | |
554 | (int) rel->r_addend & 0xffffffff); | |
555 | } | |
556 | } | |
557 | else | |
edd21aca | 558 | { |
30667bf3 AM |
559 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
560 | stub_name = bfd_malloc (len); | |
561 | if (stub_name != NULL) | |
562 | { | |
563 | sprintf (stub_name, "%08x_%x:%x+%x", | |
564 | input_section->id & 0xffffffff, | |
565 | sym_sec->id & 0xffffffff, | |
566 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
567 | (int) rel->r_addend & 0xffffffff); | |
568 | } | |
edd21aca AM |
569 | } |
570 | return stub_name; | |
571 | } | |
252b5132 | 572 | |
30667bf3 AM |
573 | /* Look up an entry in the stub hash. Stub entries are cached because |
574 | creating the stub name takes a bit of time. */ | |
575 | ||
576 | static struct elf32_hppa_stub_hash_entry * | |
83c81bfe | 577 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, htab) |
30667bf3 AM |
578 | const asection *input_section; |
579 | const asection *sym_sec; | |
580 | struct elf32_hppa_link_hash_entry *hash; | |
581 | const Elf_Internal_Rela *rel; | |
83c81bfe | 582 | struct elf32_hppa_link_hash_table *htab; |
252b5132 | 583 | { |
30667bf3 | 584 | struct elf32_hppa_stub_hash_entry *stub_entry; |
25f72752 AM |
585 | const asection *id_sec; |
586 | ||
587 | /* If this input section is part of a group of sections sharing one | |
588 | stub section, then use the id of the first section in the group. | |
589 | Stub names need to include a section id, as there may well be | |
590 | more than one stub used to reach say, printf, and we need to | |
591 | distinguish between them. */ | |
83c81bfe | 592 | id_sec = htab->stub_group[input_section->id].link_sec; |
edd21aca | 593 | |
30667bf3 AM |
594 | if (hash != NULL && hash->stub_cache != NULL |
595 | && hash->stub_cache->h == hash | |
25f72752 | 596 | && hash->stub_cache->id_sec == id_sec) |
edd21aca | 597 | { |
30667bf3 AM |
598 | stub_entry = hash->stub_cache; |
599 | } | |
600 | else | |
601 | { | |
30667bf3 | 602 | char *stub_name; |
edd21aca | 603 | |
25f72752 | 604 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel); |
30667bf3 AM |
605 | if (stub_name == NULL) |
606 | return NULL; | |
edd21aca | 607 | |
83c81bfe | 608 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, |
25f72752 | 609 | stub_name, false, false); |
f09ebc7d AM |
610 | if (hash != NULL) |
611 | hash->stub_cache = stub_entry; | |
30667bf3 AM |
612 | |
613 | free (stub_name); | |
edd21aca | 614 | } |
30667bf3 AM |
615 | |
616 | return stub_entry; | |
617 | } | |
618 | ||
30667bf3 AM |
619 | /* Add a new stub entry to the stub hash. Not all fields of the new |
620 | stub entry are initialised. */ | |
621 | ||
622 | static struct elf32_hppa_stub_hash_entry * | |
83c81bfe | 623 | hppa_add_stub (stub_name, section, htab) |
30667bf3 AM |
624 | const char *stub_name; |
625 | asection *section; | |
83c81bfe | 626 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 | 627 | { |
25f72752 | 628 | asection *link_sec; |
30667bf3 | 629 | asection *stub_sec; |
30667bf3 | 630 | struct elf32_hppa_stub_hash_entry *stub_entry; |
edd21aca | 631 | |
83c81bfe AM |
632 | link_sec = htab->stub_group[section->id].link_sec; |
633 | stub_sec = htab->stub_group[section->id].stub_sec; | |
30667bf3 | 634 | if (stub_sec == NULL) |
edd21aca | 635 | { |
83c81bfe | 636 | stub_sec = htab->stub_group[link_sec->id].stub_sec; |
30667bf3 AM |
637 | if (stub_sec == NULL) |
638 | { | |
dc810e39 | 639 | bfd_size_type len; |
30667bf3 AM |
640 | char *s_name; |
641 | ||
25f72752 | 642 | len = strlen (link_sec->name) + sizeof (STUB_SUFFIX); |
83c81bfe | 643 | s_name = bfd_alloc (htab->stub_bfd, len); |
30667bf3 AM |
644 | if (s_name == NULL) |
645 | return NULL; | |
646 | ||
25f72752 | 647 | strcpy (s_name, link_sec->name); |
30667bf3 | 648 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); |
83c81bfe | 649 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
30667bf3 AM |
650 | if (stub_sec == NULL) |
651 | return NULL; | |
83c81bfe | 652 | htab->stub_group[link_sec->id].stub_sec = stub_sec; |
30667bf3 | 653 | } |
83c81bfe | 654 | htab->stub_group[section->id].stub_sec = stub_sec; |
edd21aca | 655 | } |
252b5132 | 656 | |
30667bf3 | 657 | /* Enter this entry into the linker stub hash table. */ |
83c81bfe | 658 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
30667bf3 AM |
659 | true, false); |
660 | if (stub_entry == NULL) | |
661 | { | |
662 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
8f615d07 | 663 | bfd_archive_filename (section->owner), |
30667bf3 AM |
664 | stub_name); |
665 | return NULL; | |
edd21aca AM |
666 | } |
667 | ||
30667bf3 | 668 | stub_entry->stub_sec = stub_sec; |
30667bf3 | 669 | stub_entry->stub_offset = 0; |
25f72752 | 670 | stub_entry->id_sec = link_sec; |
30667bf3 | 671 | return stub_entry; |
edd21aca AM |
672 | } |
673 | ||
30667bf3 AM |
674 | /* Determine the type of stub needed, if any, for a call. */ |
675 | ||
676 | static enum elf32_hppa_stub_type | |
677 | hppa_type_of_stub (input_sec, rel, hash, destination) | |
678 | asection *input_sec; | |
679 | const Elf_Internal_Rela *rel; | |
680 | struct elf32_hppa_link_hash_entry *hash; | |
681 | bfd_vma destination; | |
edd21aca | 682 | { |
edd21aca | 683 | bfd_vma location; |
30667bf3 AM |
684 | bfd_vma branch_offset; |
685 | bfd_vma max_branch_offset; | |
686 | unsigned int r_type; | |
687 | ||
688 | if (hash != NULL | |
689 | && (((hash->elf.root.type == bfd_link_hash_defined | |
74d1c347 AM |
690 | || hash->elf.root.type == bfd_link_hash_defweak) |
691 | && hash->elf.root.u.def.section->output_section == NULL) | |
692 | || (hash->elf.root.type == bfd_link_hash_defweak | |
693 | && hash->elf.dynindx != -1 | |
694 | && hash->elf.plt.offset != (bfd_vma) -1) | |
30667bf3 AM |
695 | || hash->elf.root.type == bfd_link_hash_undefweak |
696 | || hash->elf.root.type == bfd_link_hash_undefined | |
12cca0d2 | 697 | || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF)))) |
30667bf3 AM |
698 | { |
699 | /* If output_section is NULL, then it's a symbol defined in a | |
700 | shared library. We will need an import stub. Decide between | |
74d1c347 AM |
701 | hppa_stub_import and hppa_stub_import_shared later. For |
702 | shared links we need stubs for undefined or weak syms too; | |
703 | They will presumably be resolved by the dynamic linker. */ | |
30667bf3 AM |
704 | return hppa_stub_import; |
705 | } | |
edd21aca | 706 | |
30667bf3 AM |
707 | /* Determine where the call point is. */ |
708 | location = (input_sec->output_offset | |
709 | + input_sec->output_section->vma | |
710 | + rel->r_offset); | |
edd21aca | 711 | |
30667bf3 AM |
712 | branch_offset = destination - location - 8; |
713 | r_type = ELF32_R_TYPE (rel->r_info); | |
edd21aca | 714 | |
30667bf3 AM |
715 | /* Determine if a long branch stub is needed. parisc branch offsets |
716 | are relative to the second instruction past the branch, ie. +8 | |
717 | bytes on from the branch instruction location. The offset is | |
718 | signed and counts in units of 4 bytes. */ | |
719 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
edd21aca | 720 | { |
30667bf3 AM |
721 | max_branch_offset = (1 << (17-1)) << 2; |
722 | } | |
723 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
724 | { | |
725 | max_branch_offset = (1 << (12-1)) << 2; | |
726 | } | |
25f72752 | 727 | else /* R_PARISC_PCREL22F. */ |
30667bf3 AM |
728 | { |
729 | max_branch_offset = (1 << (22-1)) << 2; | |
edd21aca AM |
730 | } |
731 | ||
30667bf3 | 732 | if (branch_offset + max_branch_offset >= 2*max_branch_offset) |
98ceb8ce AM |
733 | return hppa_stub_long_branch; |
734 | ||
30667bf3 AM |
735 | return hppa_stub_none; |
736 | } | |
edd21aca | 737 | |
30667bf3 AM |
738 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
739 | IN_ARG contains the link info pointer. */ | |
edd21aca | 740 | |
30667bf3 AM |
741 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ |
742 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ | |
edd21aca | 743 | |
30667bf3 | 744 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */ |
3ee1d854 | 745 | #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */ |
30667bf3 | 746 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ |
252b5132 | 747 | |
3ee1d854 AM |
748 | #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */ |
749 | #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */ | |
30667bf3 | 750 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ |
3ee1d854 | 751 | #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */ |
252b5132 | 752 | |
3ee1d854 AM |
753 | #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */ |
754 | #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */ | |
edd21aca | 755 | |
30667bf3 AM |
756 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ |
757 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ | |
758 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ | |
759 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ | |
edd21aca | 760 | |
30667bf3 AM |
761 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ |
762 | #define NOP 0x08000240 /* nop */ | |
763 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ | |
764 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ | |
765 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ | |
edd21aca | 766 | |
30667bf3 AM |
767 | #ifndef R19_STUBS |
768 | #define R19_STUBS 1 | |
769 | #endif | |
edd21aca | 770 | |
30667bf3 AM |
771 | #if R19_STUBS |
772 | #define LDW_R1_DLT LDW_R1_R19 | |
773 | #else | |
774 | #define LDW_R1_DLT LDW_R1_DP | |
775 | #endif | |
edd21aca | 776 | |
30667bf3 AM |
777 | static boolean |
778 | hppa_build_one_stub (gen_entry, in_arg) | |
779 | struct bfd_hash_entry *gen_entry; | |
780 | PTR in_arg; | |
781 | { | |
782 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
783 | struct bfd_link_info *info; | |
83c81bfe | 784 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
785 | asection *stub_sec; |
786 | bfd *stub_bfd; | |
787 | bfd_byte *loc; | |
788 | bfd_vma sym_value; | |
74d1c347 | 789 | bfd_vma insn; |
8dea1268 | 790 | bfd_vma off; |
74d1c347 | 791 | int val; |
30667bf3 | 792 | int size; |
edd21aca | 793 | |
30667bf3 AM |
794 | /* Massage our args to the form they really have. */ |
795 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
796 | info = (struct bfd_link_info *) in_arg; | |
797 | ||
83c81bfe | 798 | htab = hppa_link_hash_table (info); |
30667bf3 | 799 | stub_sec = stub_entry->stub_sec; |
edd21aca | 800 | |
30667bf3 | 801 | /* Make a note of the offset within the stubs for this entry. */ |
74d1c347 | 802 | stub_entry->stub_offset = stub_sec->_raw_size; |
30667bf3 | 803 | loc = stub_sec->contents + stub_entry->stub_offset; |
252b5132 | 804 | |
30667bf3 AM |
805 | stub_bfd = stub_sec->owner; |
806 | ||
807 | switch (stub_entry->stub_type) | |
808 | { | |
809 | case hppa_stub_long_branch: | |
810 | /* Create the long branch. A long branch is formed with "ldil" | |
811 | loading the upper bits of the target address into a register, | |
812 | then branching with "be" which adds in the lower bits. | |
813 | The "be" has its delay slot nullified. */ | |
814 | sym_value = (stub_entry->target_value | |
815 | + stub_entry->target_section->output_offset | |
816 | + stub_entry->target_section->output_section->vma); | |
817 | ||
74d1c347 AM |
818 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel); |
819 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); | |
30667bf3 AM |
820 | bfd_put_32 (stub_bfd, insn, loc); |
821 | ||
74d1c347 AM |
822 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2; |
823 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); | |
30667bf3 AM |
824 | bfd_put_32 (stub_bfd, insn, loc + 4); |
825 | ||
30667bf3 | 826 | size = 8; |
edd21aca AM |
827 | break; |
828 | ||
30667bf3 AM |
829 | case hppa_stub_long_branch_shared: |
830 | /* Branches are relative. This is where we are going to. */ | |
831 | sym_value = (stub_entry->target_value | |
832 | + stub_entry->target_section->output_offset | |
833 | + stub_entry->target_section->output_section->vma); | |
834 | ||
835 | /* And this is where we are coming from, more or less. */ | |
836 | sym_value -= (stub_entry->stub_offset | |
837 | + stub_sec->output_offset | |
838 | + stub_sec->output_section->vma); | |
839 | ||
74d1c347 | 840 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); |
47d89dba | 841 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel); |
74d1c347 | 842 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); |
30667bf3 AM |
843 | bfd_put_32 (stub_bfd, insn, loc + 4); |
844 | ||
47d89dba | 845 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2; |
74d1c347 | 846 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); |
30667bf3 AM |
847 | bfd_put_32 (stub_bfd, insn, loc + 8); |
848 | size = 12; | |
849 | break; | |
edd21aca | 850 | |
30667bf3 AM |
851 | case hppa_stub_import: |
852 | case hppa_stub_import_shared: | |
8dea1268 AM |
853 | off = stub_entry->h->elf.plt.offset; |
854 | if (off >= (bfd_vma) -2) | |
49e9d0d3 | 855 | abort (); |
8dea1268 AM |
856 | |
857 | off &= ~ (bfd_vma) 1; | |
858 | sym_value = (off | |
83c81bfe AM |
859 | + htab->splt->output_offset |
860 | + htab->splt->output_section->vma | |
861 | - elf_gp (htab->splt->output_section->owner)); | |
30667bf3 AM |
862 | |
863 | insn = ADDIL_DP; | |
864 | #if R19_STUBS | |
865 | if (stub_entry->stub_type == hppa_stub_import_shared) | |
866 | insn = ADDIL_R19; | |
867 | #endif | |
47d89dba | 868 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel), |
74d1c347 | 869 | insn = hppa_rebuild_insn ((int) insn, val, 21); |
30667bf3 | 870 | bfd_put_32 (stub_bfd, insn, loc); |
edd21aca | 871 | |
47d89dba AM |
872 | /* It is critical to use lrsel/rrsel here because we are using |
873 | two different offsets (+0 and +4) from sym_value. If we use | |
874 | lsel/rsel then with unfortunate sym_values we will round | |
875 | sym_value+4 up to the next 2k block leading to a mis-match | |
876 | between the lsel and rsel value. */ | |
877 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel); | |
74d1c347 | 878 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); |
30667bf3 | 879 | bfd_put_32 (stub_bfd, insn, loc + 4); |
252b5132 | 880 | |
83c81bfe | 881 | if (htab->multi_subspace) |
30667bf3 | 882 | { |
47d89dba | 883 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); |
74d1c347 | 884 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); |
30667bf3 | 885 | bfd_put_32 (stub_bfd, insn, loc + 8); |
252b5132 | 886 | |
74d1c347 AM |
887 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); |
888 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
889 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); | |
890 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); | |
252b5132 | 891 | |
30667bf3 AM |
892 | size = 28; |
893 | } | |
894 | else | |
895 | { | |
74d1c347 | 896 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); |
47d89dba | 897 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); |
74d1c347 | 898 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); |
30667bf3 | 899 | bfd_put_32 (stub_bfd, insn, loc + 12); |
252b5132 | 900 | |
30667bf3 AM |
901 | size = 16; |
902 | } | |
252b5132 | 903 | |
30667bf3 AM |
904 | if (!info->shared |
905 | && stub_entry->h != NULL | |
906 | && stub_entry->h->pic_call) | |
252b5132 | 907 | { |
30667bf3 AM |
908 | /* Build the .plt entry needed to call a PIC function from |
909 | statically linked code. We don't need any relocs. */ | |
910 | bfd *dynobj; | |
911 | struct elf32_hppa_link_hash_entry *eh; | |
912 | bfd_vma value; | |
252b5132 | 913 | |
ebe50bae | 914 | dynobj = htab->elf.dynobj; |
30667bf3 | 915 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; |
252b5132 | 916 | |
49e9d0d3 AM |
917 | if (eh->elf.root.type != bfd_link_hash_defined |
918 | && eh->elf.root.type != bfd_link_hash_defweak) | |
919 | abort (); | |
252b5132 | 920 | |
30667bf3 AM |
921 | value = (eh->elf.root.u.def.value |
922 | + eh->elf.root.u.def.section->output_offset | |
923 | + eh->elf.root.u.def.section->output_section->vma); | |
252b5132 | 924 | |
30667bf3 | 925 | /* Fill in the entry in the procedure linkage table. |
252b5132 | 926 | |
30667bf3 | 927 | The format of a plt entry is |
74d1c347 AM |
928 | <funcaddr> |
929 | <__gp>. */ | |
252b5132 | 930 | |
83c81bfe AM |
931 | bfd_put_32 (htab->splt->owner, value, |
932 | htab->splt->contents + off); | |
933 | value = elf_gp (htab->splt->output_section->owner); | |
934 | bfd_put_32 (htab->splt->owner, value, | |
935 | htab->splt->contents + off + 4); | |
252b5132 | 936 | } |
30667bf3 | 937 | break; |
252b5132 | 938 | |
30667bf3 AM |
939 | case hppa_stub_export: |
940 | /* Branches are relative. This is where we are going to. */ | |
941 | sym_value = (stub_entry->target_value | |
942 | + stub_entry->target_section->output_offset | |
943 | + stub_entry->target_section->output_section->vma); | |
252b5132 | 944 | |
30667bf3 AM |
945 | /* And this is where we are coming from. */ |
946 | sym_value -= (stub_entry->stub_offset | |
947 | + stub_sec->output_offset | |
948 | + stub_sec->output_section->vma); | |
edd21aca | 949 | |
30667bf3 AM |
950 | if (sym_value - 8 + 0x40000 >= 0x80000) |
951 | { | |
edd21aca | 952 | (*_bfd_error_handler) |
30667bf3 | 953 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), |
8f615d07 | 954 | bfd_archive_filename (stub_entry->target_section->owner), |
30667bf3 AM |
955 | stub_sec->name, |
956 | (long) stub_entry->stub_offset, | |
957 | stub_entry->root.string); | |
958 | bfd_set_error (bfd_error_bad_value); | |
edd21aca | 959 | return false; |
252b5132 | 960 | } |
30667bf3 | 961 | |
74d1c347 AM |
962 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; |
963 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17); | |
30667bf3 AM |
964 | bfd_put_32 (stub_bfd, insn, loc); |
965 | ||
74d1c347 AM |
966 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); |
967 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); | |
968 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); | |
969 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); | |
970 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); | |
30667bf3 AM |
971 | |
972 | /* Point the function symbol at the stub. */ | |
973 | stub_entry->h->elf.root.u.def.section = stub_sec; | |
74d1c347 | 974 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size; |
30667bf3 AM |
975 | |
976 | size = 24; | |
977 | break; | |
978 | ||
979 | default: | |
980 | BFD_FAIL (); | |
981 | return false; | |
252b5132 RH |
982 | } |
983 | ||
74d1c347 | 984 | stub_sec->_raw_size += size; |
252b5132 RH |
985 | return true; |
986 | } | |
987 | ||
30667bf3 AM |
988 | #undef LDIL_R1 |
989 | #undef BE_SR4_R1 | |
990 | #undef BL_R1 | |
991 | #undef ADDIL_R1 | |
992 | #undef DEPI_R1 | |
993 | #undef ADDIL_DP | |
994 | #undef LDW_R1_R21 | |
995 | #undef LDW_R1_DLT | |
996 | #undef LDW_R1_R19 | |
997 | #undef ADDIL_R19 | |
998 | #undef LDW_R1_DP | |
999 | #undef LDSID_R21_R1 | |
1000 | #undef MTSP_R1 | |
1001 | #undef BE_SR0_R21 | |
1002 | #undef STW_RP | |
1003 | #undef BV_R0_R21 | |
1004 | #undef BL_RP | |
1005 | #undef NOP | |
1006 | #undef LDW_RP | |
1007 | #undef LDSID_RP_R1 | |
1008 | #undef BE_SR0_RP | |
252b5132 | 1009 | |
30667bf3 AM |
1010 | /* As above, but don't actually build the stub. Just bump offset so |
1011 | we know stub section sizes. */ | |
1012 | ||
1013 | static boolean | |
1014 | hppa_size_one_stub (gen_entry, in_arg) | |
1015 | struct bfd_hash_entry *gen_entry; | |
1016 | PTR in_arg; | |
252b5132 | 1017 | { |
30667bf3 | 1018 | struct elf32_hppa_stub_hash_entry *stub_entry; |
83c81bfe | 1019 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
1020 | int size; |
1021 | ||
1022 | /* Massage our args to the form they really have. */ | |
1023 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; | |
83c81bfe | 1024 | htab = (struct elf32_hppa_link_hash_table *) in_arg; |
30667bf3 AM |
1025 | |
1026 | if (stub_entry->stub_type == hppa_stub_long_branch) | |
98ceb8ce | 1027 | size = 8; |
30667bf3 AM |
1028 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared) |
1029 | size = 12; | |
1030 | else if (stub_entry->stub_type == hppa_stub_export) | |
1031 | size = 24; | |
74d1c347 | 1032 | else /* hppa_stub_import or hppa_stub_import_shared. */ |
252b5132 | 1033 | { |
83c81bfe | 1034 | if (htab->multi_subspace) |
30667bf3 AM |
1035 | size = 28; |
1036 | else | |
1037 | size = 16; | |
1038 | } | |
252b5132 | 1039 | |
74d1c347 | 1040 | stub_entry->stub_sec->_raw_size += size; |
30667bf3 AM |
1041 | return true; |
1042 | } | |
252b5132 | 1043 | |
30667bf3 AM |
1044 | /* Return nonzero if ABFD represents an HPPA ELF32 file. |
1045 | Additionally we set the default architecture and machine. */ | |
1046 | ||
1047 | static boolean | |
1048 | elf32_hppa_object_p (abfd) | |
1049 | bfd *abfd; | |
1050 | { | |
24a5e751 L |
1051 | Elf_Internal_Ehdr * i_ehdrp; |
1052 | unsigned int flags; | |
252b5132 | 1053 | |
24a5e751 L |
1054 | i_ehdrp = elf_elfheader (abfd); |
1055 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) | |
1056 | { | |
1057 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX) | |
1058 | return false; | |
1059 | } | |
1060 | else | |
1061 | { | |
1062 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX) | |
1063 | return false; | |
1064 | } | |
1065 | ||
1066 | flags = i_ehdrp->e_flags; | |
30667bf3 AM |
1067 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
1068 | { | |
1069 | case EFA_PARISC_1_0: | |
1070 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); | |
1071 | case EFA_PARISC_1_1: | |
1072 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); | |
1073 | case EFA_PARISC_2_0: | |
1074 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); | |
1075 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: | |
1076 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); | |
1077 | } | |
1078 | return true; | |
252b5132 RH |
1079 | } |
1080 | ||
252b5132 RH |
1081 | /* Undo the generic ELF code's subtraction of section->vma from the |
1082 | value of each external symbol. */ | |
1083 | ||
1084 | static boolean | |
1085 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
5f771d47 ILT |
1086 | bfd *abfd ATTRIBUTE_UNUSED; |
1087 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1088 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; | |
1089 | const char **namep ATTRIBUTE_UNUSED; | |
1090 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1091 | asection **secp; |
1092 | bfd_vma *valp; | |
1093 | { | |
1094 | *valp += (*secp)->vma; | |
1095 | return true; | |
1096 | } | |
1097 | ||
30667bf3 AM |
1098 | /* Create the .plt and .got sections, and set up our hash table |
1099 | short-cuts to various dynamic sections. */ | |
1100 | ||
1101 | static boolean | |
1102 | elf32_hppa_create_dynamic_sections (abfd, info) | |
1103 | bfd *abfd; | |
1104 | struct bfd_link_info *info; | |
252b5132 | 1105 | { |
83c81bfe | 1106 | struct elf32_hppa_link_hash_table *htab; |
edd21aca | 1107 | |
30667bf3 | 1108 | /* Don't try to create the .plt and .got twice. */ |
83c81bfe AM |
1109 | htab = hppa_link_hash_table (info); |
1110 | if (htab->splt != NULL) | |
30667bf3 | 1111 | return true; |
edd21aca | 1112 | |
30667bf3 AM |
1113 | /* Call the generic code to do most of the work. */ |
1114 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1115 | return false; | |
252b5132 | 1116 | |
83c81bfe AM |
1117 | htab->splt = bfd_get_section_by_name (abfd, ".plt"); |
1118 | htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
30667bf3 | 1119 | |
83c81bfe AM |
1120 | htab->sgot = bfd_get_section_by_name (abfd, ".got"); |
1121 | htab->srelgot = bfd_make_section (abfd, ".rela.got"); | |
1122 | if (htab->srelgot == NULL | |
1123 | || ! bfd_set_section_flags (abfd, htab->srelgot, | |
30667bf3 AM |
1124 | (SEC_ALLOC |
1125 | | SEC_LOAD | |
1126 | | SEC_HAS_CONTENTS | |
1127 | | SEC_IN_MEMORY | |
1128 | | SEC_LINKER_CREATED | |
1129 | | SEC_READONLY)) | |
83c81bfe | 1130 | || ! bfd_set_section_alignment (abfd, htab->srelgot, 2)) |
30667bf3 | 1131 | return false; |
edd21aca | 1132 | |
83c81bfe AM |
1133 | htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); |
1134 | htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); | |
30667bf3 AM |
1135 | |
1136 | return true; | |
1137 | } | |
1138 | ||
ebe50bae AM |
1139 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
1140 | ||
51b64d56 | 1141 | static void |
ebe50bae AM |
1142 | elf32_hppa_copy_indirect_symbol (dir, ind) |
1143 | struct elf_link_hash_entry *dir, *ind; | |
1144 | { | |
1145 | struct elf32_hppa_link_hash_entry *edir, *eind; | |
1146 | ||
1147 | edir = (struct elf32_hppa_link_hash_entry *) dir; | |
1148 | eind = (struct elf32_hppa_link_hash_entry *) ind; | |
1149 | ||
bbd7ec4a | 1150 | if (eind->dyn_relocs != NULL) |
ebe50bae | 1151 | { |
bbd7ec4a AM |
1152 | if (edir->dyn_relocs != NULL) |
1153 | { | |
1154 | struct elf32_hppa_dyn_reloc_entry **pp; | |
1155 | struct elf32_hppa_dyn_reloc_entry *p; | |
1156 | ||
1e370bd2 | 1157 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
1158 | abort (); |
1159 | ||
1160 | /* Add reloc counts against the weak sym to the strong sym | |
1161 | list. Merge any entries against the same section. */ | |
1162 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
1163 | { | |
1164 | struct elf32_hppa_dyn_reloc_entry *q; | |
1165 | ||
1166 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1167 | if (q->sec == p->sec) | |
1168 | { | |
1169 | #if RELATIVE_DYNRELOCS | |
1170 | q->relative_count += p->relative_count; | |
1171 | #endif | |
1172 | q->count += p->count; | |
1173 | *pp = p->next; | |
1174 | break; | |
1175 | } | |
1176 | if (q == NULL) | |
1177 | pp = &p->next; | |
1178 | } | |
1179 | *pp = edir->dyn_relocs; | |
1180 | } | |
1181 | ||
ebe50bae AM |
1182 | edir->dyn_relocs = eind->dyn_relocs; |
1183 | eind->dyn_relocs = NULL; | |
1184 | } | |
ebe50bae AM |
1185 | |
1186 | _bfd_elf_link_hash_copy_indirect (dir, ind); | |
1187 | } | |
1188 | ||
30667bf3 | 1189 | /* Look through the relocs for a section during the first phase, and |
3ac8354b AM |
1190 | calculate needed space in the global offset table, procedure linkage |
1191 | table, and dynamic reloc sections. At this point we haven't | |
1192 | necessarily read all the input files. */ | |
252b5132 RH |
1193 | |
1194 | static boolean | |
30667bf3 AM |
1195 | elf32_hppa_check_relocs (abfd, info, sec, relocs) |
1196 | bfd *abfd; | |
1197 | struct bfd_link_info *info; | |
1198 | asection *sec; | |
1199 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1200 | { |
30667bf3 AM |
1201 | Elf_Internal_Shdr *symtab_hdr; |
1202 | struct elf_link_hash_entry **sym_hashes; | |
30667bf3 AM |
1203 | const Elf_Internal_Rela *rel; |
1204 | const Elf_Internal_Rela *rel_end; | |
83c81bfe | 1205 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
1206 | asection *sreloc; |
1207 | asection *stubreloc; | |
1208 | ||
1209 | if (info->relocateable) | |
1210 | return true; | |
1211 | ||
83c81bfe | 1212 | htab = hppa_link_hash_table (info); |
30667bf3 AM |
1213 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1214 | sym_hashes = elf_sym_hashes (abfd); | |
30667bf3 AM |
1215 | sreloc = NULL; |
1216 | stubreloc = NULL; | |
1217 | ||
1218 | rel_end = relocs + sec->reloc_count; | |
1219 | for (rel = relocs; rel < rel_end; rel++) | |
1220 | { | |
1221 | enum { | |
1222 | NEED_GOT = 1, | |
1223 | NEED_PLT = 2, | |
1224 | NEED_DYNREL = 4, | |
98ceb8ce | 1225 | PLT_PLABEL = 8 |
30667bf3 | 1226 | }; |
edd21aca | 1227 | |
30667bf3 AM |
1228 | unsigned int r_symndx, r_type; |
1229 | struct elf32_hppa_link_hash_entry *h; | |
1230 | int need_entry; | |
252b5132 | 1231 | |
30667bf3 | 1232 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 | 1233 | |
30667bf3 AM |
1234 | if (r_symndx < symtab_hdr->sh_info) |
1235 | h = NULL; | |
1236 | else | |
1237 | h = ((struct elf32_hppa_link_hash_entry *) | |
1238 | sym_hashes[r_symndx - symtab_hdr->sh_info]); | |
252b5132 | 1239 | |
30667bf3 | 1240 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1241 | |
30667bf3 AM |
1242 | switch (r_type) |
1243 | { | |
1244 | case R_PARISC_DLTIND14F: | |
1245 | case R_PARISC_DLTIND14R: | |
1246 | case R_PARISC_DLTIND21L: | |
1247 | /* This symbol requires a global offset table entry. */ | |
1248 | need_entry = NEED_GOT; | |
1249 | ||
1250 | /* Mark this section as containing PIC code. */ | |
1251 | sec->flags |= SEC_HAS_GOT_REF; | |
1252 | break; | |
1253 | ||
1254 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ | |
1255 | case R_PARISC_PLABEL21L: | |
1256 | case R_PARISC_PLABEL32: | |
74d1c347 | 1257 | /* If the addend is non-zero, we break badly. */ |
49e9d0d3 AM |
1258 | if (rel->r_addend != 0) |
1259 | abort (); | |
74d1c347 AM |
1260 | |
1261 | /* If we are creating a shared library, then we need to | |
1262 | create a PLT entry for all PLABELs, because PLABELs with | |
1263 | local symbols may be passed via a pointer to another | |
1264 | object. Additionally, output a dynamic relocation | |
4dc86686 AM |
1265 | pointing to the PLT entry. |
1266 | For executables, the original 32-bit ABI allowed two | |
1267 | different styles of PLABELs (function pointers): For | |
1268 | global functions, the PLABEL word points into the .plt | |
1269 | two bytes past a (function address, gp) pair, and for | |
1270 | local functions the PLABEL points directly at the | |
1271 | function. The magic +2 for the first type allows us to | |
1272 | differentiate between the two. As you can imagine, this | |
1273 | is a real pain when it comes to generating code to call | |
1274 | functions indirectly or to compare function pointers. | |
1275 | We avoid the mess by always pointing a PLABEL into the | |
1276 | .plt, even for local functions. */ | |
74d1c347 | 1277 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; |
30667bf3 AM |
1278 | break; |
1279 | ||
1280 | case R_PARISC_PCREL12F: | |
83c81bfe | 1281 | htab->has_12bit_branch = 1; |
47d89dba | 1282 | /* Fall thru. */ |
30667bf3 AM |
1283 | case R_PARISC_PCREL17C: |
1284 | case R_PARISC_PCREL17F: | |
83c81bfe | 1285 | htab->has_17bit_branch = 1; |
47d89dba | 1286 | /* Fall thru. */ |
30667bf3 | 1287 | case R_PARISC_PCREL22F: |
47d89dba AM |
1288 | /* Function calls might need to go through the .plt, and |
1289 | might require long branch stubs. */ | |
30667bf3 AM |
1290 | if (h == NULL) |
1291 | { | |
1292 | /* We know local syms won't need a .plt entry, and if | |
1293 | they need a long branch stub we can't guarantee that | |
1294 | we can reach the stub. So just flag an error later | |
1295 | if we're doing a shared link and find we need a long | |
1296 | branch stub. */ | |
1297 | continue; | |
1298 | } | |
1299 | else | |
1300 | { | |
1301 | /* Global symbols will need a .plt entry if they remain | |
1302 | global, and in most cases won't need a long branch | |
1303 | stub. Unfortunately, we have to cater for the case | |
1304 | where a symbol is forced local by versioning, or due | |
1305 | to symbolic linking, and we lose the .plt entry. */ | |
98ceb8ce | 1306 | need_entry = NEED_PLT; |
4dc86686 | 1307 | if (h->elf.type == STT_PARISC_MILLI) |
98ceb8ce | 1308 | need_entry = 0; |
30667bf3 AM |
1309 | } |
1310 | break; | |
1311 | ||
1312 | case R_PARISC_SEGBASE: /* Used to set segment base. */ | |
c46b7515 | 1313 | case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */ |
30667bf3 AM |
1314 | case R_PARISC_PCREL14F: /* PC relative load/store. */ |
1315 | case R_PARISC_PCREL14R: | |
1316 | case R_PARISC_PCREL17R: /* External branches. */ | |
1317 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */ | |
1318 | /* We don't need to propagate the relocation if linking a | |
1319 | shared object since these are section relative. */ | |
1320 | continue; | |
1321 | ||
1322 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ | |
1323 | case R_PARISC_DPREL14R: | |
1324 | case R_PARISC_DPREL21L: | |
1325 | if (info->shared) | |
1326 | { | |
1327 | (*_bfd_error_handler) | |
1328 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
8f615d07 | 1329 | bfd_archive_filename (abfd), |
30667bf3 AM |
1330 | elf_hppa_howto_table[r_type].name); |
1331 | bfd_set_error (bfd_error_bad_value); | |
1332 | return false; | |
1333 | } | |
1334 | /* Fall through. */ | |
1335 | ||
1336 | case R_PARISC_DIR17F: /* Used for external branches. */ | |
1337 | case R_PARISC_DIR17R: | |
47d89dba AM |
1338 | case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */ |
1339 | case R_PARISC_DIR14R: | |
30667bf3 AM |
1340 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */ |
1341 | #if 1 | |
1342 | /* Help debug shared library creation. Any of the above | |
1343 | relocs can be used in shared libs, but they may cause | |
1344 | pages to become unshared. */ | |
1345 | if (info->shared) | |
1346 | { | |
1347 | (*_bfd_error_handler) | |
1348 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"), | |
8f615d07 | 1349 | bfd_archive_filename (abfd), |
30667bf3 AM |
1350 | elf_hppa_howto_table[r_type].name); |
1351 | } | |
1352 | /* Fall through. */ | |
1353 | #endif | |
1354 | ||
c46b7515 | 1355 | case R_PARISC_DIR32: /* .word relocs. */ |
30667bf3 AM |
1356 | /* We may want to output a dynamic relocation later. */ |
1357 | need_entry = NEED_DYNREL; | |
1358 | break; | |
1359 | ||
1360 | /* This relocation describes the C++ object vtable hierarchy. | |
1361 | Reconstruct it for later use during GC. */ | |
1362 | case R_PARISC_GNU_VTINHERIT: | |
1363 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, | |
1364 | &h->elf, rel->r_offset)) | |
1365 | return false; | |
1366 | continue; | |
1367 | ||
1368 | /* This relocation describes which C++ vtable entries are actually | |
1369 | used. Record for later use during GC. */ | |
1370 | case R_PARISC_GNU_VTENTRY: | |
1371 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, | |
36605136 | 1372 | &h->elf, rel->r_addend)) |
30667bf3 AM |
1373 | return false; |
1374 | continue; | |
1375 | ||
1376 | default: | |
1377 | continue; | |
1378 | } | |
1379 | ||
1380 | /* Now carry out our orders. */ | |
1381 | if (need_entry & NEED_GOT) | |
1382 | { | |
1383 | /* Allocate space for a GOT entry, as well as a dynamic | |
25f72752 | 1384 | relocation for this entry. */ |
83c81bfe | 1385 | if (htab->sgot == NULL) |
30667bf3 | 1386 | { |
3ac8354b AM |
1387 | if (htab->elf.dynobj == NULL) |
1388 | htab->elf.dynobj = abfd; | |
1389 | if (!elf32_hppa_create_dynamic_sections (htab->elf.dynobj, info)) | |
30667bf3 AM |
1390 | return false; |
1391 | } | |
1392 | ||
1393 | if (h != NULL) | |
1394 | { | |
51b64d56 | 1395 | h->elf.got.refcount += 1; |
30667bf3 AM |
1396 | } |
1397 | else | |
1398 | { | |
3ac8354b AM |
1399 | bfd_signed_vma *local_got_refcounts; |
1400 | ||
30667bf3 | 1401 | /* This is a global offset table entry for a local symbol. */ |
3ac8354b | 1402 | local_got_refcounts = elf_local_got_refcounts (abfd); |
30667bf3 AM |
1403 | if (local_got_refcounts == NULL) |
1404 | { | |
dc810e39 | 1405 | bfd_size_type size; |
30667bf3 | 1406 | |
74d1c347 AM |
1407 | /* Allocate space for local got offsets and local |
1408 | plt offsets. Done this way to save polluting | |
1409 | elf_obj_tdata with another target specific | |
1410 | pointer. */ | |
dc810e39 AM |
1411 | size = symtab_hdr->sh_info; |
1412 | size *= 2 * sizeof (bfd_signed_vma); | |
30667bf3 | 1413 | local_got_refcounts = ((bfd_signed_vma *) |
ebe50bae | 1414 | bfd_zalloc (abfd, size)); |
30667bf3 AM |
1415 | if (local_got_refcounts == NULL) |
1416 | return false; | |
1417 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
30667bf3 | 1418 | } |
ebe50bae | 1419 | local_got_refcounts[r_symndx] += 1; |
30667bf3 AM |
1420 | } |
1421 | } | |
1422 | ||
1423 | if (need_entry & NEED_PLT) | |
1424 | { | |
1425 | /* If we are creating a shared library, and this is a reloc | |
1426 | against a weak symbol or a global symbol in a dynamic | |
1427 | object, then we will be creating an import stub and a | |
1428 | .plt entry for the symbol. Similarly, on a normal link | |
1429 | to symbols defined in a dynamic object we'll need the | |
1430 | import stub and a .plt entry. We don't know yet whether | |
1431 | the symbol is defined or not, so make an entry anyway and | |
1432 | clean up later in adjust_dynamic_symbol. */ | |
1433 | if ((sec->flags & SEC_ALLOC) != 0) | |
1434 | { | |
74d1c347 | 1435 | if (h != NULL) |
30667bf3 | 1436 | { |
51b64d56 AM |
1437 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
1438 | h->elf.plt.refcount += 1; | |
74d1c347 | 1439 | |
36605136 AM |
1440 | /* If this .plt entry is for a plabel, mark it so |
1441 | that adjust_dynamic_symbol will keep the entry | |
1442 | even if it appears to be local. */ | |
74d1c347 AM |
1443 | if (need_entry & PLT_PLABEL) |
1444 | h->plabel = 1; | |
1445 | } | |
1446 | else if (need_entry & PLT_PLABEL) | |
1447 | { | |
3ac8354b | 1448 | bfd_signed_vma *local_got_refcounts; |
68fb2e56 | 1449 | bfd_signed_vma *local_plt_refcounts; |
74d1c347 | 1450 | |
3ac8354b | 1451 | local_got_refcounts = elf_local_got_refcounts (abfd); |
74d1c347 AM |
1452 | if (local_got_refcounts == NULL) |
1453 | { | |
dc810e39 | 1454 | bfd_size_type size; |
74d1c347 AM |
1455 | |
1456 | /* Allocate space for local got offsets and local | |
1457 | plt offsets. */ | |
dc810e39 AM |
1458 | size = symtab_hdr->sh_info; |
1459 | size *= 2 * sizeof (bfd_signed_vma); | |
74d1c347 | 1460 | local_got_refcounts = ((bfd_signed_vma *) |
ebe50bae | 1461 | bfd_zalloc (abfd, size)); |
74d1c347 AM |
1462 | if (local_got_refcounts == NULL) |
1463 | return false; | |
1464 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
74d1c347 | 1465 | } |
68fb2e56 AM |
1466 | local_plt_refcounts = (local_got_refcounts |
1467 | + symtab_hdr->sh_info); | |
ebe50bae | 1468 | local_plt_refcounts[r_symndx] += 1; |
30667bf3 | 1469 | } |
30667bf3 AM |
1470 | } |
1471 | } | |
1472 | ||
98ceb8ce | 1473 | if (need_entry & NEED_DYNREL) |
30667bf3 AM |
1474 | { |
1475 | /* Flag this symbol as having a non-got, non-plt reference | |
1476 | so that we generate copy relocs if it turns out to be | |
1477 | dynamic. */ | |
ebe50bae | 1478 | if (h != NULL && !info->shared) |
30667bf3 AM |
1479 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; |
1480 | ||
1481 | /* If we are creating a shared library then we need to copy | |
1482 | the reloc into the shared library. However, if we are | |
1483 | linking with -Bsymbolic, we need only copy absolute | |
1484 | relocs or relocs against symbols that are not defined in | |
1485 | an object we are including in the link. PC- or DP- or | |
1486 | DLT-relative relocs against any local sym or global sym | |
1487 | with DEF_REGULAR set, can be discarded. At this point we | |
1488 | have not seen all the input files, so it is possible that | |
1489 | DEF_REGULAR is not set now but will be set later (it is | |
1490 | never cleared). We account for that possibility below by | |
98ceb8ce | 1491 | storing information in the dyn_relocs field of the |
30667bf3 AM |
1492 | hash table entry. |
1493 | ||
1494 | A similar situation to the -Bsymbolic case occurs when | |
1495 | creating shared libraries and symbol visibility changes | |
1496 | render the symbol local. | |
1497 | ||
1498 | As it turns out, all the relocs we will be creating here | |
1499 | are absolute, so we cannot remove them on -Bsymbolic | |
1500 | links or visibility changes anyway. A STUB_REL reloc | |
1501 | is absolute too, as in that case it is the reloc in the | |
1502 | stub we will be creating, rather than copying the PCREL | |
56882138 AM |
1503 | reloc in the branch. |
1504 | ||
1505 | If on the other hand, we are creating an executable, we | |
1506 | may need to keep relocations for symbols satisfied by a | |
1507 | dynamic library if we manage to avoid copy relocs for the | |
1508 | symbol. */ | |
446f2863 AM |
1509 | if ((info->shared |
1510 | && (sec->flags & SEC_ALLOC) != 0 | |
1511 | && (IS_ABSOLUTE_RELOC (r_type) | |
1512 | || (h != NULL | |
1513 | && (!info->symbolic | |
1514 | || h->elf.root.type == bfd_link_hash_defweak | |
1515 | || (h->elf.elf_link_hash_flags | |
1516 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
1517 | || (!info->shared | |
1518 | && (sec->flags & SEC_ALLOC) != 0 | |
1519 | && h != NULL | |
446f2863 AM |
1520 | && (h->elf.root.type == bfd_link_hash_defweak |
1521 | || (h->elf.elf_link_hash_flags | |
1522 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
30667bf3 | 1523 | { |
ec338859 AM |
1524 | struct elf32_hppa_dyn_reloc_entry *p; |
1525 | struct elf32_hppa_dyn_reloc_entry **head; | |
1526 | ||
30667bf3 AM |
1527 | /* Create a reloc section in dynobj and make room for |
1528 | this reloc. */ | |
98ceb8ce | 1529 | if (sreloc == NULL) |
30667bf3 AM |
1530 | { |
1531 | char *name; | |
3ac8354b | 1532 | bfd *dynobj; |
30667bf3 | 1533 | |
98ceb8ce AM |
1534 | name = (bfd_elf_string_from_elf_section |
1535 | (abfd, | |
1536 | elf_elfheader (abfd)->e_shstrndx, | |
1537 | elf_section_data (sec)->rel_hdr.sh_name)); | |
30667bf3 AM |
1538 | if (name == NULL) |
1539 | { | |
1540 | (*_bfd_error_handler) | |
1541 | (_("Could not find relocation section for %s"), | |
1542 | sec->name); | |
1543 | bfd_set_error (bfd_error_bad_value); | |
1544 | return false; | |
1545 | } | |
1546 | ||
3ac8354b AM |
1547 | if (htab->elf.dynobj == NULL) |
1548 | htab->elf.dynobj = abfd; | |
1549 | ||
1550 | dynobj = htab->elf.dynobj; | |
98ceb8ce AM |
1551 | sreloc = bfd_get_section_by_name (dynobj, name); |
1552 | if (sreloc == NULL) | |
30667bf3 AM |
1553 | { |
1554 | flagword flags; | |
1555 | ||
98ceb8ce | 1556 | sreloc = bfd_make_section (dynobj, name); |
30667bf3 AM |
1557 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
1558 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1559 | if ((sec->flags & SEC_ALLOC) != 0) | |
1560 | flags |= SEC_ALLOC | SEC_LOAD; | |
98ceb8ce AM |
1561 | if (sreloc == NULL |
1562 | || !bfd_set_section_flags (dynobj, sreloc, flags) | |
1563 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
30667bf3 AM |
1564 | return false; |
1565 | } | |
30667bf3 | 1566 | |
98ceb8ce | 1567 | elf_section_data (sec)->sreloc = sreloc; |
30667bf3 AM |
1568 | } |
1569 | ||
98ceb8ce AM |
1570 | /* If this is a global symbol, we count the number of |
1571 | relocations we need for this symbol. */ | |
1572 | if (h != NULL) | |
30667bf3 | 1573 | { |
ec338859 AM |
1574 | head = &h->dyn_relocs; |
1575 | } | |
1576 | else | |
1577 | { | |
1578 | /* Track dynamic relocs needed for local syms too. | |
1579 | We really need local syms available to do this | |
1580 | easily. Oh well. */ | |
1581 | ||
1582 | asection *s; | |
1583 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1584 | sec, r_symndx); | |
1585 | if (s == NULL) | |
1586 | return false; | |
30667bf3 | 1587 | |
ec338859 AM |
1588 | head = ((struct elf32_hppa_dyn_reloc_entry **) |
1589 | &elf_section_data (s)->local_dynrel); | |
1590 | } | |
1591 | ||
1592 | p = *head; | |
1593 | if (p == NULL || p->sec != sec) | |
1594 | { | |
1595 | p = ((struct elf32_hppa_dyn_reloc_entry *) | |
1596 | bfd_alloc (htab->elf.dynobj, | |
1597 | (bfd_size_type) sizeof *p)); | |
1598 | if (p == NULL) | |
1599 | return false; | |
1600 | p->next = *head; | |
1601 | *head = p; | |
1602 | p->sec = sec; | |
1603 | p->count = 0; | |
98ceb8ce | 1604 | #if RELATIVE_DYNRELOCS |
ec338859 | 1605 | p->relative_count = 0; |
98ceb8ce | 1606 | #endif |
ec338859 | 1607 | } |
98ceb8ce | 1608 | |
ec338859 | 1609 | p->count += 1; |
98ceb8ce | 1610 | #if RELATIVE_DYNRELOCS |
ec338859 AM |
1611 | if (!IS_ABSOLUTE_RELOC (rtype)) |
1612 | p->relative_count += 1; | |
98ceb8ce | 1613 | #endif |
30667bf3 AM |
1614 | } |
1615 | } | |
1616 | } | |
edd21aca AM |
1617 | |
1618 | return true; | |
1619 | } | |
1620 | ||
30667bf3 AM |
1621 | /* Return the section that should be marked against garbage collection |
1622 | for a given relocation. */ | |
1623 | ||
1624 | static asection * | |
1625 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) | |
1626 | bfd *abfd; | |
1627 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1628 | Elf_Internal_Rela *rel; | |
1629 | struct elf_link_hash_entry *h; | |
1630 | Elf_Internal_Sym *sym; | |
1631 | { | |
1632 | if (h != NULL) | |
1633 | { | |
1634 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1635 | { | |
1636 | case R_PARISC_GNU_VTINHERIT: | |
1637 | case R_PARISC_GNU_VTENTRY: | |
1638 | break; | |
1639 | ||
1640 | default: | |
1641 | switch (h->root.type) | |
1642 | { | |
1643 | case bfd_link_hash_defined: | |
1644 | case bfd_link_hash_defweak: | |
1645 | return h->root.u.def.section; | |
1646 | ||
1647 | case bfd_link_hash_common: | |
1648 | return h->root.u.c.p->section; | |
1649 | ||
1650 | default: | |
1651 | break; | |
1652 | } | |
1653 | } | |
1654 | } | |
1655 | else | |
1656 | { | |
9ad5cbcf | 1657 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
30667bf3 AM |
1658 | } |
1659 | ||
1660 | return NULL; | |
1661 | } | |
1662 | ||
30667bf3 AM |
1663 | /* Update the got and plt entry reference counts for the section being |
1664 | removed. */ | |
edd21aca AM |
1665 | |
1666 | static boolean | |
30667bf3 AM |
1667 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) |
1668 | bfd *abfd; | |
1669 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1670 | asection *sec; | |
1671 | const Elf_Internal_Rela *relocs; | |
edd21aca | 1672 | { |
30667bf3 AM |
1673 | Elf_Internal_Shdr *symtab_hdr; |
1674 | struct elf_link_hash_entry **sym_hashes; | |
1675 | bfd_signed_vma *local_got_refcounts; | |
74d1c347 | 1676 | bfd_signed_vma *local_plt_refcounts; |
30667bf3 AM |
1677 | const Elf_Internal_Rela *rel, *relend; |
1678 | unsigned long r_symndx; | |
1679 | struct elf_link_hash_entry *h; | |
83c81bfe | 1680 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 | 1681 | bfd *dynobj; |
30667bf3 | 1682 | |
ec338859 | 1683 | elf_section_data (sec)->local_dynrel = NULL; |
98ceb8ce | 1684 | |
30667bf3 AM |
1685 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1686 | sym_hashes = elf_sym_hashes (abfd); | |
1687 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
74d1c347 AM |
1688 | local_plt_refcounts = local_got_refcounts; |
1689 | if (local_plt_refcounts != NULL) | |
1690 | local_plt_refcounts += symtab_hdr->sh_info; | |
83c81bfe | 1691 | htab = hppa_link_hash_table (info); |
ebe50bae | 1692 | dynobj = htab->elf.dynobj; |
30667bf3 AM |
1693 | if (dynobj == NULL) |
1694 | return true; | |
1695 | ||
30667bf3 AM |
1696 | relend = relocs + sec->reloc_count; |
1697 | for (rel = relocs; rel < relend; rel++) | |
1698 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) | |
1699 | { | |
1700 | case R_PARISC_DLTIND14F: | |
1701 | case R_PARISC_DLTIND14R: | |
1702 | case R_PARISC_DLTIND21L: | |
1703 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1704 | if (r_symndx >= symtab_hdr->sh_info) | |
1705 | { | |
1706 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1707 | if (h->got.refcount > 0) | |
4dc86686 | 1708 | h->got.refcount -= 1; |
30667bf3 AM |
1709 | } |
1710 | else if (local_got_refcounts != NULL) | |
1711 | { | |
1712 | if (local_got_refcounts[r_symndx] > 0) | |
4dc86686 | 1713 | local_got_refcounts[r_symndx] -= 1; |
30667bf3 AM |
1714 | } |
1715 | break; | |
edd21aca | 1716 | |
30667bf3 AM |
1717 | case R_PARISC_PCREL12F: |
1718 | case R_PARISC_PCREL17C: | |
1719 | case R_PARISC_PCREL17F: | |
1720 | case R_PARISC_PCREL22F: | |
1721 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1722 | if (r_symndx >= symtab_hdr->sh_info) | |
1723 | { | |
1724 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1725 | if (h->plt.refcount > 0) | |
1726 | h->plt.refcount -= 1; | |
1727 | } | |
1728 | break; | |
edd21aca | 1729 | |
74d1c347 AM |
1730 | case R_PARISC_PLABEL14R: |
1731 | case R_PARISC_PLABEL21L: | |
1732 | case R_PARISC_PLABEL32: | |
1733 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1734 | if (r_symndx >= symtab_hdr->sh_info) | |
1735 | { | |
98ceb8ce AM |
1736 | struct elf32_hppa_link_hash_entry *eh; |
1737 | struct elf32_hppa_dyn_reloc_entry **pp; | |
1738 | struct elf32_hppa_dyn_reloc_entry *p; | |
1739 | ||
74d1c347 | 1740 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
98ceb8ce | 1741 | |
74d1c347 AM |
1742 | if (h->plt.refcount > 0) |
1743 | h->plt.refcount -= 1; | |
98ceb8ce AM |
1744 | |
1745 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
1746 | ||
1747 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1748 | if (p->sec == sec) | |
1749 | { | |
1750 | #if RELATIVE_DYNRELOCS | |
1751 | if (!IS_ABSOLUTE_RELOC (rtype)) | |
1752 | p->relative_count -= 1; | |
1753 | #endif | |
1754 | p->count -= 1; | |
1755 | if (p->count == 0) | |
1756 | *pp = p->next; | |
1757 | break; | |
1758 | } | |
74d1c347 AM |
1759 | } |
1760 | else if (local_plt_refcounts != NULL) | |
1761 | { | |
1762 | if (local_plt_refcounts[r_symndx] > 0) | |
1763 | local_plt_refcounts[r_symndx] -= 1; | |
1764 | } | |
1765 | break; | |
1766 | ||
98ceb8ce AM |
1767 | case R_PARISC_DIR32: |
1768 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1769 | if (r_symndx >= symtab_hdr->sh_info) | |
1770 | { | |
1771 | struct elf32_hppa_link_hash_entry *eh; | |
1772 | struct elf32_hppa_dyn_reloc_entry **pp; | |
1773 | struct elf32_hppa_dyn_reloc_entry *p; | |
1774 | ||
1775 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1776 | ||
1777 | eh = (struct elf32_hppa_link_hash_entry *) h; | |
1778 | ||
1779 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1780 | if (p->sec == sec) | |
1781 | { | |
1782 | #if RELATIVE_DYNRELOCS | |
1783 | if (!IS_ABSOLUTE_RELOC (R_PARISC_DIR32)) | |
1784 | p->relative_count -= 1; | |
1785 | #endif | |
1786 | p->count -= 1; | |
1787 | if (p->count == 0) | |
1788 | *pp = p->next; | |
1789 | break; | |
1790 | } | |
1791 | } | |
1792 | break; | |
1793 | ||
30667bf3 AM |
1794 | default: |
1795 | break; | |
1796 | } | |
252b5132 | 1797 | |
252b5132 RH |
1798 | return true; |
1799 | } | |
1800 | ||
74d1c347 AM |
1801 | /* Our own version of hide_symbol, so that we can keep plt entries for |
1802 | plabels. */ | |
1803 | ||
1804 | static void | |
e5094212 AM |
1805 | elf32_hppa_hide_symbol (info, h, force_local) |
1806 | struct bfd_link_info *info; | |
74d1c347 | 1807 | struct elf_link_hash_entry *h; |
e5094212 | 1808 | boolean force_local; |
74d1c347 | 1809 | { |
e5094212 AM |
1810 | if (force_local) |
1811 | { | |
1812 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; | |
1813 | if (h->dynindx != -1) | |
1814 | { | |
1815 | h->dynindx = -1; | |
1816 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1817 | h->dynstr_index); | |
1818 | } | |
1819 | } | |
1820 | ||
74d1c347 AM |
1821 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel) |
1822 | { | |
1823 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1824 | h->plt.offset = (bfd_vma) -1; | |
1825 | } | |
1826 | } | |
1827 | ||
4dc86686 AM |
1828 | /* This is the condition under which elf32_hppa_finish_dynamic_symbol |
1829 | will be called from elflink.h. If elflink.h doesn't call our | |
1830 | finish_dynamic_symbol routine, we'll need to do something about | |
1831 | initializing any .plt and .got entries in elf32_hppa_relocate_section. */ | |
1832 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1833 | ((DYN) \ | |
1834 | && ((INFO)->shared \ | |
1835 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1836 | && ((H)->dynindx != -1 \ | |
1837 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1838 | ||
30667bf3 AM |
1839 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1840 | regular object. The current definition is in some section of the | |
1841 | dynamic object, but we're not including those sections. We have to | |
1842 | change the definition to something the rest of the link can | |
1843 | understand. */ | |
252b5132 | 1844 | |
30667bf3 AM |
1845 | static boolean |
1846 | elf32_hppa_adjust_dynamic_symbol (info, h) | |
1847 | struct bfd_link_info *info; | |
1848 | struct elf_link_hash_entry *h; | |
252b5132 | 1849 | { |
83c81bfe | 1850 | struct elf32_hppa_link_hash_table *htab; |
ebe50bae AM |
1851 | struct elf32_hppa_link_hash_entry *eh; |
1852 | struct elf32_hppa_dyn_reloc_entry *p; | |
30667bf3 | 1853 | asection *s; |
3ac8354b | 1854 | unsigned int power_of_two; |
30667bf3 AM |
1855 | |
1856 | /* If this is a function, put it in the procedure linkage table. We | |
1857 | will fill in the contents of the procedure linkage table later, | |
1858 | when we know the address of the .got section. */ | |
1859 | if (h->type == STT_FUNC | |
1860 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1861 | { | |
12cca0d2 AM |
1862 | if (!info->shared |
1863 | && h->plt.refcount > 0 | |
1864 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1865 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) | |
1866 | { | |
1867 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; | |
1868 | } | |
1869 | ||
30667bf3 AM |
1870 | if (h->plt.refcount <= 0 |
1871 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1872 | && h->root.type != bfd_link_hash_defweak | |
74d1c347 | 1873 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel |
30667bf3 AM |
1874 | && (!info->shared || info->symbolic))) |
1875 | { | |
1876 | /* The .plt entry is not needed when: | |
1877 | a) Garbage collection has removed all references to the | |
1878 | symbol, or | |
1879 | b) We know for certain the symbol is defined in this | |
74d1c347 AM |
1880 | object, and it's not a weak definition, nor is the symbol |
1881 | used by a plabel relocation. Either this object is the | |
1882 | application or we are doing a shared symbolic link. */ | |
1883 | ||
1884 | /* As a special sop to the hppa ABI, we keep a .plt entry | |
1885 | for functions in sections containing PIC code. */ | |
12cca0d2 AM |
1886 | if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call) |
1887 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; | |
30667bf3 AM |
1888 | else |
1889 | { | |
1890 | h->plt.offset = (bfd_vma) -1; | |
1891 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
30667bf3 | 1892 | } |
30667bf3 | 1893 | } |
4dc86686 | 1894 | |
30667bf3 AM |
1895 | return true; |
1896 | } | |
bbd7ec4a AM |
1897 | else |
1898 | h->plt.offset = (bfd_vma) -1; | |
edd21aca | 1899 | |
30667bf3 AM |
1900 | /* If this is a weak symbol, and there is a real definition, the |
1901 | processor independent code will have arranged for us to see the | |
1902 | real definition first, and we can just use the same value. */ | |
1903 | if (h->weakdef != NULL) | |
edd21aca | 1904 | { |
49e9d0d3 AM |
1905 | if (h->weakdef->root.type != bfd_link_hash_defined |
1906 | && h->weakdef->root.type != bfd_link_hash_defweak) | |
1907 | abort (); | |
30667bf3 AM |
1908 | h->root.u.def.section = h->weakdef->root.u.def.section; |
1909 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
0a991dfe | 1910 | return true; |
30667bf3 | 1911 | } |
edd21aca | 1912 | |
30667bf3 AM |
1913 | /* This is a reference to a symbol defined by a dynamic object which |
1914 | is not a function. */ | |
1915 | ||
1916 | /* If we are creating a shared library, we must presume that the | |
1917 | only references to the symbol are via the global offset table. | |
1918 | For such cases we need not do anything here; the relocations will | |
1919 | be handled correctly by relocate_section. */ | |
1920 | if (info->shared) | |
1921 | return true; | |
1922 | ||
1923 | /* If there are no references to this symbol that do not use the | |
1924 | GOT, we don't need to generate a copy reloc. */ | |
1925 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1926 | return true; | |
1927 | ||
ebe50bae AM |
1928 | eh = (struct elf32_hppa_link_hash_entry *) h; |
1929 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1930 | { | |
1931 | s = p->sec->output_section; | |
1932 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1933 | break; | |
1934 | } | |
1935 | ||
1936 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1937 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1938 | if (p == NULL) | |
1939 | { | |
1940 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1941 | return true; | |
1942 | } | |
1943 | ||
30667bf3 AM |
1944 | /* We must allocate the symbol in our .dynbss section, which will |
1945 | become part of the .bss section of the executable. There will be | |
1946 | an entry for this symbol in the .dynsym section. The dynamic | |
1947 | object will contain position independent code, so all references | |
1948 | from the dynamic object to this symbol will go through the global | |
1949 | offset table. The dynamic linker will use the .dynsym entry to | |
1950 | determine the address it must put in the global offset table, so | |
1951 | both the dynamic object and the regular object will refer to the | |
1952 | same memory location for the variable. */ | |
1953 | ||
3ac8354b | 1954 | htab = hppa_link_hash_table (info); |
30667bf3 AM |
1955 | |
1956 | /* We must generate a COPY reloc to tell the dynamic linker to | |
1957 | copy the initial value out of the dynamic object and into the | |
3ac8354b | 1958 | runtime process image. */ |
30667bf3 AM |
1959 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1960 | { | |
3ac8354b | 1961 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rela); |
30667bf3 | 1962 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
edd21aca | 1963 | } |
252b5132 | 1964 | |
3ac8354b AM |
1965 | /* We need to figure out the alignment required for this symbol. I |
1966 | have no idea how other ELF linkers handle this. */ | |
30667bf3 | 1967 | |
3ac8354b AM |
1968 | power_of_two = bfd_log2 (h->size); |
1969 | if (power_of_two > 3) | |
1970 | power_of_two = 3; | |
1971 | ||
1972 | /* Apply the required alignment. */ | |
1973 | s = htab->sdynbss; | |
1974 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
1975 | (bfd_size_type) (1 << power_of_two)); | |
1976 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
1977 | { | |
1978 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) | |
1979 | return false; | |
1980 | } | |
30667bf3 | 1981 | |
30667bf3 AM |
1982 | /* Define the symbol as being at this point in the section. */ |
1983 | h->root.u.def.section = s; | |
1984 | h->root.u.def.value = s->_raw_size; | |
edd21aca | 1985 | |
30667bf3 AM |
1986 | /* Increment the section size to make room for the symbol. */ |
1987 | s->_raw_size += h->size; | |
252b5132 RH |
1988 | |
1989 | return true; | |
1990 | } | |
1991 | ||
30667bf3 AM |
1992 | /* Called via elf_link_hash_traverse to create .plt entries for an |
1993 | application that uses statically linked PIC functions. Similar to | |
1994 | the first part of elf32_hppa_adjust_dynamic_symbol. */ | |
252b5132 | 1995 | |
30667bf3 | 1996 | static boolean |
a8d02d66 | 1997 | mark_PIC_calls (h, inf) |
30667bf3 | 1998 | struct elf_link_hash_entry *h; |
4dc86686 | 1999 | PTR inf ATTRIBUTE_UNUSED; |
252b5132 | 2000 | { |
e92d460e AM |
2001 | if (h->root.type == bfd_link_hash_warning) |
2002 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2003 | ||
30667bf3 AM |
2004 | if (! (h->plt.refcount > 0 |
2005 | && (h->root.type == bfd_link_hash_defined | |
2006 | || h->root.type == bfd_link_hash_defweak) | |
2007 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) | |
252b5132 | 2008 | { |
30667bf3 AM |
2009 | h->plt.offset = (bfd_vma) -1; |
2010 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2011 | return true; | |
252b5132 RH |
2012 | } |
2013 | ||
74d1c347 | 2014 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
12cca0d2 | 2015 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; |
30667bf3 | 2016 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; |
edd21aca | 2017 | |
4dc86686 AM |
2018 | return true; |
2019 | } | |
2020 | ||
e5ee5df1 AM |
2021 | /* Allocate space in the .plt for entries that won't have relocations. |
2022 | ie. pic_call and plabel entries. */ | |
a8d02d66 AM |
2023 | |
2024 | static boolean | |
e5ee5df1 | 2025 | allocate_plt_static (h, inf) |
a8d02d66 AM |
2026 | struct elf_link_hash_entry *h; |
2027 | PTR inf; | |
2028 | { | |
2029 | struct bfd_link_info *info; | |
2030 | struct elf32_hppa_link_hash_table *htab; | |
2031 | asection *s; | |
2032 | ||
e92d460e | 2033 | if (h->root.type == bfd_link_hash_indirect) |
a8d02d66 AM |
2034 | return true; |
2035 | ||
e92d460e AM |
2036 | if (h->root.type == bfd_link_hash_warning) |
2037 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2038 | ||
a8d02d66 AM |
2039 | info = (struct bfd_link_info *) inf; |
2040 | htab = hppa_link_hash_table (info); | |
2041 | if (((struct elf32_hppa_link_hash_entry *) h)->pic_call) | |
2042 | { | |
e5ee5df1 AM |
2043 | /* Make an entry in the .plt section for non-pic code that is |
2044 | calling pic code. */ | |
a8d02d66 AM |
2045 | s = htab->splt; |
2046 | h->plt.offset = s->_raw_size; | |
e5ee5df1 AM |
2047 | s->_raw_size += PLT_ENTRY_SIZE; |
2048 | } | |
2049 | else if (htab->elf.dynamic_sections_created | |
2050 | && h->plt.refcount > 0) | |
2051 | { | |
2052 | /* Make sure this symbol is output as a dynamic symbol. | |
2053 | Undefined weak syms won't yet be marked as dynamic. */ | |
2054 | if (h->dynindx == -1 | |
2055 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
2056 | && h->type != STT_PARISC_MILLI) | |
a8d02d66 | 2057 | { |
e5ee5df1 AM |
2058 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
2059 | return false; | |
2060 | } | |
2061 | ||
2062 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
2063 | { | |
2064 | /* Allocate these later. */ | |
2065 | } | |
2066 | else if (((struct elf32_hppa_link_hash_entry *) h)->plabel) | |
2067 | { | |
2068 | /* Make an entry in the .plt section for plabel references | |
2069 | that won't have a .plt entry for other reasons. */ | |
2070 | s = htab->splt; | |
2071 | h->plt.offset = s->_raw_size; | |
2072 | s->_raw_size += PLT_ENTRY_SIZE; | |
a8d02d66 AM |
2073 | } |
2074 | else | |
e5ee5df1 AM |
2075 | { |
2076 | /* No .plt entry needed. */ | |
2077 | h->plt.offset = (bfd_vma) -1; | |
2078 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2079 | } | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | h->plt.offset = (bfd_vma) -1; | |
2084 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
a8d02d66 AM |
2085 | } |
2086 | ||
2087 | return true; | |
2088 | } | |
2089 | ||
4dc86686 AM |
2090 | /* Allocate space in .plt, .got and associated reloc sections for |
2091 | global syms. */ | |
2092 | ||
2093 | static boolean | |
98ceb8ce | 2094 | allocate_dynrelocs (h, inf) |
4dc86686 AM |
2095 | struct elf_link_hash_entry *h; |
2096 | PTR inf; | |
2097 | { | |
2098 | struct bfd_link_info *info; | |
83c81bfe | 2099 | struct elf32_hppa_link_hash_table *htab; |
4dc86686 | 2100 | asection *s; |
446f2863 | 2101 | struct elf32_hppa_link_hash_entry *eh; |
98ceb8ce | 2102 | struct elf32_hppa_dyn_reloc_entry *p; |
4dc86686 | 2103 | |
e92d460e | 2104 | if (h->root.type == bfd_link_hash_indirect) |
73a74a62 AM |
2105 | return true; |
2106 | ||
e92d460e AM |
2107 | if (h->root.type == bfd_link_hash_warning) |
2108 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2109 | ||
30667bf3 | 2110 | info = (struct bfd_link_info *) inf; |
83c81bfe | 2111 | htab = hppa_link_hash_table (info); |
e5ee5df1 AM |
2112 | if (htab->elf.dynamic_sections_created |
2113 | && h->plt.offset != (bfd_vma) -1 | |
2114 | && !((struct elf32_hppa_link_hash_entry *) h)->pic_call | |
2115 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
4dc86686 | 2116 | { |
e5ee5df1 AM |
2117 | /* Make an entry in the .plt section. */ |
2118 | s = htab->splt; | |
2119 | h->plt.offset = s->_raw_size; | |
2120 | s->_raw_size += PLT_ENTRY_SIZE; | |
3ac8354b | 2121 | |
e5ee5df1 AM |
2122 | /* We also need to make an entry in the .rela.plt section. */ |
2123 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rela); | |
2124 | htab->need_plt_stub = 1; | |
4dc86686 | 2125 | } |
edd21aca | 2126 | |
4dc86686 AM |
2127 | if (h->got.refcount > 0) |
2128 | { | |
446f2863 AM |
2129 | /* Make sure this symbol is output as a dynamic symbol. |
2130 | Undefined weak syms won't yet be marked as dynamic. */ | |
2131 | if (h->dynindx == -1 | |
2132 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
2133 | && h->type != STT_PARISC_MILLI) | |
2134 | { | |
2135 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2136 | return false; | |
2137 | } | |
2138 | ||
83c81bfe | 2139 | s = htab->sgot; |
4dc86686 AM |
2140 | h->got.offset = s->_raw_size; |
2141 | s->_raw_size += GOT_ENTRY_SIZE; | |
ce757d15 AM |
2142 | if (htab->elf.dynamic_sections_created |
2143 | && (info->shared | |
2144 | || (h->dynindx != -1 | |
2145 | && h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)) | |
2146 | { | |
2147 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
2148 | } | |
4dc86686 AM |
2149 | } |
2150 | else | |
2151 | h->got.offset = (bfd_vma) -1; | |
30667bf3 | 2152 | |
446f2863 | 2153 | eh = (struct elf32_hppa_link_hash_entry *) h; |
98ceb8ce | 2154 | if (eh->dyn_relocs == NULL) |
446f2863 | 2155 | return true; |
30667bf3 | 2156 | |
98ceb8ce AM |
2157 | /* If this is a -Bsymbolic shared link, then we need to discard all |
2158 | space allocated for dynamic pc-relative relocs against symbols | |
2159 | defined in a regular object. For the normal shared case, discard | |
2160 | space for relocs that have become local due to symbol visibility | |
2161 | changes. */ | |
2162 | if (info->shared) | |
446f2863 | 2163 | { |
98ceb8ce AM |
2164 | #if RELATIVE_DYNRELOCS |
2165 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
2166 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
2167 | || info->symbolic)) | |
446f2863 | 2168 | { |
98ceb8ce | 2169 | struct elf32_hppa_dyn_reloc_entry **pp; |
30667bf3 | 2170 | |
98ceb8ce AM |
2171 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
2172 | { | |
2173 | p->count -= p->relative_count; | |
2174 | p->relative_count = 0; | |
2175 | if (p->count == 0) | |
2176 | *pp = p->next; | |
2177 | else | |
2178 | pp = &p->next; | |
2179 | } | |
2180 | } | |
2181 | #endif | |
446f2863 | 2182 | } |
98ceb8ce | 2183 | else |
30667bf3 | 2184 | { |
98ceb8ce AM |
2185 | /* For the non-shared case, discard space for relocs against |
2186 | symbols which turn out to need copy relocs or are not | |
2187 | dynamic. */ | |
2188 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
2189 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2190 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 2191 | || (htab->elf.dynamic_sections_created |
98ceb8ce AM |
2192 | && (h->root.type == bfd_link_hash_undefweak |
2193 | || h->root.type == bfd_link_hash_undefined)))) | |
2194 | { | |
2195 | /* Make sure this symbol is output as a dynamic symbol. | |
2196 | Undefined weak syms won't yet be marked as dynamic. */ | |
2197 | if (h->dynindx == -1 | |
2198 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
2199 | && h->type != STT_PARISC_MILLI) | |
2200 | { | |
2201 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
2202 | return false; | |
2203 | } | |
2204 | ||
2205 | /* If that succeeded, we know we'll be keeping all the | |
2206 | relocs. */ | |
2207 | if (h->dynindx != -1) | |
2208 | goto keep; | |
2209 | } | |
446f2863 | 2210 | |
98ceb8ce AM |
2211 | eh->dyn_relocs = NULL; |
2212 | return true; | |
2213 | ||
ec338859 | 2214 | keep: ; |
30667bf3 | 2215 | } |
30667bf3 | 2216 | |
98ceb8ce AM |
2217 | /* Finally, allocate space. */ |
2218 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
30667bf3 | 2219 | { |
98ceb8ce AM |
2220 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
2221 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); | |
30667bf3 | 2222 | } |
30667bf3 AM |
2223 | |
2224 | return true; | |
2225 | } | |
30667bf3 | 2226 | |
d5c73c2f AM |
2227 | /* This function is called via elf_link_hash_traverse to force |
2228 | millicode symbols local so they do not end up as globals in the | |
2229 | dynamic symbol table. We ought to be able to do this in | |
2230 | adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called | |
2231 | for all dynamic symbols. Arguably, this is a bug in | |
2232 | elf_adjust_dynamic_symbol. */ | |
2233 | ||
2234 | static boolean | |
2235 | clobber_millicode_symbols (h, info) | |
2236 | struct elf_link_hash_entry *h; | |
2237 | struct bfd_link_info *info; | |
2238 | { | |
e92d460e AM |
2239 | if (h->root.type == bfd_link_hash_warning) |
2240 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2241 | ||
142f8c94 AM |
2242 | if (h->type == STT_PARISC_MILLI |
2243 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
e0522e89 | 2244 | { |
e5094212 | 2245 | elf32_hppa_hide_symbol (info, h, true); |
e0522e89 | 2246 | } |
d5c73c2f AM |
2247 | return true; |
2248 | } | |
2249 | ||
98ceb8ce AM |
2250 | /* Find any dynamic relocs that apply to read-only sections. */ |
2251 | ||
2252 | static boolean | |
2253 | readonly_dynrelocs (h, inf) | |
2254 | struct elf_link_hash_entry *h; | |
2255 | PTR inf; | |
2256 | { | |
2257 | struct elf32_hppa_link_hash_entry *eh; | |
2258 | struct elf32_hppa_dyn_reloc_entry *p; | |
2259 | ||
e92d460e AM |
2260 | if (h->root.type == bfd_link_hash_warning) |
2261 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2262 | ||
98ceb8ce AM |
2263 | eh = (struct elf32_hppa_link_hash_entry *) h; |
2264 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2265 | { | |
2266 | asection *s = p->sec->output_section; | |
2267 | ||
2268 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2269 | { | |
2270 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2271 | ||
2272 | info->flags |= DF_TEXTREL; | |
2273 | ||
2274 | /* Not an error, just cut short the traversal. */ | |
2275 | return false; | |
2276 | } | |
2277 | } | |
2278 | return true; | |
2279 | } | |
2280 | ||
30667bf3 AM |
2281 | /* Set the sizes of the dynamic sections. */ |
2282 | ||
2283 | static boolean | |
2284 | elf32_hppa_size_dynamic_sections (output_bfd, info) | |
98ceb8ce | 2285 | bfd *output_bfd ATTRIBUTE_UNUSED; |
30667bf3 AM |
2286 | struct bfd_link_info *info; |
2287 | { | |
83c81bfe | 2288 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 | 2289 | bfd *dynobj; |
98ceb8ce | 2290 | bfd *ibfd; |
30667bf3 AM |
2291 | asection *s; |
2292 | boolean relocs; | |
30667bf3 | 2293 | |
83c81bfe | 2294 | htab = hppa_link_hash_table (info); |
ebe50bae | 2295 | dynobj = htab->elf.dynobj; |
49e9d0d3 AM |
2296 | if (dynobj == NULL) |
2297 | abort (); | |
30667bf3 | 2298 | |
ebe50bae | 2299 | if (htab->elf.dynamic_sections_created) |
30667bf3 AM |
2300 | { |
2301 | /* Set the contents of the .interp section to the interpreter. */ | |
2302 | if (! info->shared) | |
2303 | { | |
2304 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
49e9d0d3 AM |
2305 | if (s == NULL) |
2306 | abort (); | |
30667bf3 AM |
2307 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
2308 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2309 | } | |
74d1c347 | 2310 | |
d5c73c2f | 2311 | /* Force millicode symbols local. */ |
ebe50bae | 2312 | elf_link_hash_traverse (&htab->elf, |
d5c73c2f AM |
2313 | clobber_millicode_symbols, |
2314 | info); | |
68fb2e56 AM |
2315 | } |
2316 | else | |
2317 | { | |
2318 | /* Run through the function symbols, looking for any that are | |
a8d02d66 AM |
2319 | PIC, and mark them as needing .plt entries so that %r19 will |
2320 | be set up. */ | |
68fb2e56 | 2321 | if (! info->shared) |
a8d02d66 | 2322 | elf_link_hash_traverse (&htab->elf, mark_PIC_calls, (PTR) info); |
68fb2e56 | 2323 | } |
d5c73c2f | 2324 | |
98ceb8ce AM |
2325 | /* Set up .got and .plt offsets for local syms, and space for local |
2326 | dynamic relocs. */ | |
2327 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
68fb2e56 AM |
2328 | { |
2329 | bfd_signed_vma *local_got; | |
2330 | bfd_signed_vma *end_local_got; | |
2331 | bfd_signed_vma *local_plt; | |
2332 | bfd_signed_vma *end_local_plt; | |
2333 | bfd_size_type locsymcount; | |
2334 | Elf_Internal_Shdr *symtab_hdr; | |
2335 | asection *srel; | |
74d1c347 | 2336 | |
98ceb8ce | 2337 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
68fb2e56 | 2338 | continue; |
4dc86686 | 2339 | |
98ceb8ce AM |
2340 | for (s = ibfd->sections; s != NULL; s = s->next) |
2341 | { | |
ec338859 | 2342 | struct elf32_hppa_dyn_reloc_entry *p; |
98ceb8ce | 2343 | |
ec338859 AM |
2344 | for (p = ((struct elf32_hppa_dyn_reloc_entry *) |
2345 | elf_section_data (s)->local_dynrel); | |
2346 | p != NULL; | |
2347 | p = p->next) | |
98ceb8ce | 2348 | { |
ec338859 AM |
2349 | if (!bfd_is_abs_section (p->sec) |
2350 | && bfd_is_abs_section (p->sec->output_section)) | |
2351 | { | |
2352 | /* Input section has been discarded, either because | |
2353 | it is a copy of a linkonce section or due to | |
2354 | linker script /DISCARD/, so we'll be discarding | |
2355 | the relocs too. */ | |
2356 | } | |
248866a8 | 2357 | else if (p->count != 0) |
ec338859 AM |
2358 | { |
2359 | srel = elf_section_data (p->sec)->sreloc; | |
2360 | srel->_raw_size += p->count * sizeof (Elf32_External_Rela); | |
248866a8 AM |
2361 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2362 | info->flags |= DF_TEXTREL; | |
ec338859 | 2363 | } |
98ceb8ce AM |
2364 | } |
2365 | } | |
2366 | ||
2367 | local_got = elf_local_got_refcounts (ibfd); | |
68fb2e56 AM |
2368 | if (!local_got) |
2369 | continue; | |
74d1c347 | 2370 | |
98ceb8ce | 2371 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
68fb2e56 AM |
2372 | locsymcount = symtab_hdr->sh_info; |
2373 | end_local_got = local_got + locsymcount; | |
83c81bfe AM |
2374 | s = htab->sgot; |
2375 | srel = htab->srelgot; | |
68fb2e56 AM |
2376 | for (; local_got < end_local_got; ++local_got) |
2377 | { | |
2378 | if (*local_got > 0) | |
4dc86686 | 2379 | { |
68fb2e56 AM |
2380 | *local_got = s->_raw_size; |
2381 | s->_raw_size += GOT_ENTRY_SIZE; | |
2382 | if (info->shared) | |
2383 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
4dc86686 | 2384 | } |
68fb2e56 AM |
2385 | else |
2386 | *local_got = (bfd_vma) -1; | |
2387 | } | |
74d1c347 | 2388 | |
68fb2e56 AM |
2389 | local_plt = end_local_got; |
2390 | end_local_plt = local_plt + locsymcount; | |
ebe50bae | 2391 | if (! htab->elf.dynamic_sections_created) |
68fb2e56 AM |
2392 | { |
2393 | /* Won't be used, but be safe. */ | |
2394 | for (; local_plt < end_local_plt; ++local_plt) | |
2395 | *local_plt = (bfd_vma) -1; | |
2396 | } | |
2397 | else | |
2398 | { | |
83c81bfe AM |
2399 | s = htab->splt; |
2400 | srel = htab->srelplt; | |
74d1c347 AM |
2401 | for (; local_plt < end_local_plt; ++local_plt) |
2402 | { | |
2403 | if (*local_plt > 0) | |
2404 | { | |
74d1c347 AM |
2405 | *local_plt = s->_raw_size; |
2406 | s->_raw_size += PLT_ENTRY_SIZE; | |
2407 | if (info->shared) | |
4dc86686 | 2408 | srel->_raw_size += sizeof (Elf32_External_Rela); |
74d1c347 AM |
2409 | } |
2410 | else | |
2411 | *local_plt = (bfd_vma) -1; | |
2412 | } | |
2413 | } | |
30667bf3 | 2414 | } |
30667bf3 | 2415 | |
e5ee5df1 AM |
2416 | /* Do all the .plt entries without relocs first. The dynamic linker |
2417 | uses the last .plt reloc to find the end of the .plt (and hence | |
2418 | the start of the .got) for lazy linking. */ | |
2419 | elf_link_hash_traverse (&htab->elf, allocate_plt_static, (PTR) info); | |
a8d02d66 | 2420 | |
98ceb8ce AM |
2421 | /* Allocate global sym .plt and .got entries, and space for global |
2422 | sym dynamic relocs. */ | |
ebe50bae | 2423 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
30667bf3 AM |
2424 | |
2425 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2426 | determined the sizes of the various dynamic sections. Allocate | |
2427 | memory for them. */ | |
2428 | relocs = false; | |
30667bf3 AM |
2429 | for (s = dynobj->sections; s != NULL; s = s->next) |
2430 | { | |
30667bf3 AM |
2431 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2432 | continue; | |
2433 | ||
83c81bfe | 2434 | if (s == htab->splt) |
68fb2e56 | 2435 | { |
83c81bfe | 2436 | if (htab->need_plt_stub) |
68fb2e56 AM |
2437 | { |
2438 | /* Make space for the plt stub at the end of the .plt | |
2439 | section. We want this stub right at the end, up | |
2440 | against the .got section. */ | |
83c81bfe | 2441 | int gotalign = bfd_section_alignment (dynobj, htab->sgot); |
68fb2e56 AM |
2442 | int pltalign = bfd_section_alignment (dynobj, s); |
2443 | bfd_size_type mask; | |
30667bf3 | 2444 | |
68fb2e56 AM |
2445 | if (gotalign > pltalign) |
2446 | bfd_set_section_alignment (dynobj, s, gotalign); | |
2447 | mask = ((bfd_size_type) 1 << gotalign) - 1; | |
2448 | s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask; | |
2449 | } | |
2450 | } | |
83c81bfe | 2451 | else if (s == htab->sgot) |
68fb2e56 AM |
2452 | ; |
2453 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
30667bf3 AM |
2454 | { |
2455 | if (s->_raw_size != 0) | |
2456 | { | |
4e12ff7f AM |
2457 | /* Remember whether there are any reloc sections other |
2458 | than .rela.plt. */ | |
2459 | if (s != htab->srelplt) | |
2460 | relocs = true; | |
47d89dba | 2461 | |
30667bf3 AM |
2462 | /* We use the reloc_count field as a counter if we need |
2463 | to copy relocs into the output file. */ | |
2464 | s->reloc_count = 0; | |
2465 | } | |
2466 | } | |
30667bf3 AM |
2467 | else |
2468 | { | |
2469 | /* It's not one of our sections, so don't allocate space. */ | |
2470 | continue; | |
2471 | } | |
2472 | ||
2473 | if (s->_raw_size == 0) | |
2474 | { | |
2475 | /* If we don't need this section, strip it from the | |
2476 | output file. This is mostly to handle .rela.bss and | |
2477 | .rela.plt. We must create both sections in | |
2478 | create_dynamic_sections, because they must be created | |
2479 | before the linker maps input sections to output | |
2480 | sections. The linker does that before | |
2481 | adjust_dynamic_symbol is called, and it is that | |
2482 | function which decides whether anything needs to go | |
2483 | into these sections. */ | |
2484 | _bfd_strip_section_from_output (info, s); | |
2485 | continue; | |
2486 | } | |
2487 | ||
2488 | /* Allocate memory for the section contents. Zero it, because | |
2489 | we may not fill in all the reloc sections. */ | |
2490 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2491 | if (s->contents == NULL && s->_raw_size != 0) | |
2492 | return false; | |
2493 | } | |
2494 | ||
ebe50bae | 2495 | if (htab->elf.dynamic_sections_created) |
30667bf3 AM |
2496 | { |
2497 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It | |
2498 | actually has nothing to do with the PLT, it is how we | |
2499 | communicate the LTP value of a load module to the dynamic | |
2500 | linker. */ | |
dc810e39 AM |
2501 | #define add_dynamic_entry(TAG, VAL) \ |
2502 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
2503 | ||
2504 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
30667bf3 AM |
2505 | return false; |
2506 | ||
2507 | /* Add some entries to the .dynamic section. We fill in the | |
2508 | values later, in elf32_hppa_finish_dynamic_sections, but we | |
2509 | must add the entries now so that we get the correct size for | |
2510 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2511 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2512 | if (!info->shared) |
30667bf3 | 2513 | { |
dc810e39 | 2514 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
30667bf3 AM |
2515 | return false; |
2516 | } | |
2517 | ||
83c81bfe | 2518 | if (htab->srelplt->_raw_size != 0) |
30667bf3 | 2519 | { |
dc810e39 AM |
2520 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
2521 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2522 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
30667bf3 AM |
2523 | return false; |
2524 | } | |
2525 | ||
2526 | if (relocs) | |
2527 | { | |
dc810e39 AM |
2528 | if (!add_dynamic_entry (DT_RELA, 0) |
2529 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2530 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
30667bf3 | 2531 | return false; |
30667bf3 | 2532 | |
98ceb8ce AM |
2533 | /* If any dynamic relocs apply to a read-only section, |
2534 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
2535 | if ((info->flags & DF_TEXTREL) == 0) |
2536 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2537 | (PTR) info); | |
98ceb8ce AM |
2538 | |
2539 | if ((info->flags & DF_TEXTREL) != 0) | |
2540 | { | |
2541 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2542 | return false; | |
2543 | } | |
30667bf3 AM |
2544 | } |
2545 | } | |
dc810e39 | 2546 | #undef add_dynamic_entry |
30667bf3 AM |
2547 | |
2548 | return true; | |
2549 | } | |
2550 | ||
30667bf3 AM |
2551 | /* External entry points for sizing and building linker stubs. */ |
2552 | ||
2553 | /* Determine and set the size of the stub section for a final link. | |
2554 | ||
2555 | The basic idea here is to examine all the relocations looking for | |
2556 | PC-relative calls to a target that is unreachable with a "bl" | |
2557 | instruction. */ | |
2558 | ||
2559 | boolean | |
47d89dba | 2560 | elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size, |
30667bf3 | 2561 | add_stub_section, layout_sections_again) |
25f72752 | 2562 | bfd *output_bfd; |
30667bf3 | 2563 | bfd *stub_bfd; |
30667bf3 | 2564 | struct bfd_link_info *info; |
25f72752 | 2565 | boolean multi_subspace; |
47d89dba | 2566 | bfd_signed_vma group_size; |
30667bf3 AM |
2567 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); |
2568 | void (*layout_sections_again) PARAMS ((void)); | |
2569 | { | |
2570 | bfd *input_bfd; | |
2571 | asection *section; | |
25f72752 | 2572 | asection **input_list, **list; |
30667bf3 | 2573 | Elf_Internal_Sym *local_syms, **all_local_syms; |
25f72752 AM |
2574 | unsigned int bfd_indx, bfd_count; |
2575 | int top_id, top_index; | |
83c81bfe | 2576 | struct elf32_hppa_link_hash_table *htab; |
47d89dba AM |
2577 | bfd_size_type stub_group_size; |
2578 | boolean stubs_always_before_branch; | |
30667bf3 | 2579 | boolean stub_changed = 0; |
25f72752 | 2580 | boolean ret = 0; |
dc810e39 | 2581 | bfd_size_type amt; |
30667bf3 | 2582 | |
83c81bfe | 2583 | htab = hppa_link_hash_table (info); |
30667bf3 AM |
2584 | |
2585 | /* Stash our params away. */ | |
83c81bfe AM |
2586 | htab->stub_bfd = stub_bfd; |
2587 | htab->multi_subspace = multi_subspace; | |
2588 | htab->add_stub_section = add_stub_section; | |
2589 | htab->layout_sections_again = layout_sections_again; | |
47d89dba AM |
2590 | stubs_always_before_branch = group_size < 0; |
2591 | if (group_size < 0) | |
2592 | stub_group_size = -group_size; | |
2593 | else | |
2594 | stub_group_size = group_size; | |
2595 | if (stub_group_size == 1) | |
2596 | { | |
2597 | /* Default values. */ | |
a248e267 | 2598 | stub_group_size = 7680000; |
83c81bfe | 2599 | if (htab->has_17bit_branch || htab->multi_subspace) |
a248e267 | 2600 | stub_group_size = 240000; |
83c81bfe | 2601 | if (htab->has_12bit_branch) |
a248e267 | 2602 | stub_group_size = 7500; |
47d89dba | 2603 | } |
30667bf3 | 2604 | |
1badb539 AM |
2605 | /* Count the number of input BFDs and find the top input section id. */ |
2606 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
30667bf3 AM |
2607 | input_bfd != NULL; |
2608 | input_bfd = input_bfd->link_next) | |
2609 | { | |
2610 | bfd_count += 1; | |
25f72752 AM |
2611 | for (section = input_bfd->sections; |
2612 | section != NULL; | |
2613 | section = section->next) | |
2614 | { | |
2615 | if (top_id < section->id) | |
2616 | top_id = section->id; | |
2617 | } | |
30667bf3 AM |
2618 | } |
2619 | ||
dc810e39 | 2620 | amt = sizeof (struct map_stub) * (top_id + 1); |
83c81bfe AM |
2621 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt); |
2622 | if (htab->stub_group == NULL) | |
30667bf3 AM |
2623 | return false; |
2624 | ||
1badb539 AM |
2625 | /* Make a list of input sections for each output section included in |
2626 | the link. | |
2627 | ||
2628 | We can't use output_bfd->section_count here to find the top output | |
2629 | section index as some sections may have been removed, and | |
2630 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2631 | for (section = output_bfd->sections, top_index = 0; | |
2632 | section != NULL; | |
2633 | section = section->next) | |
2634 | { | |
2635 | if (top_index < section->index) | |
2636 | top_index = section->index; | |
2637 | } | |
2638 | ||
dc810e39 AM |
2639 | amt = sizeof (asection *) * (top_index + 1); |
2640 | input_list = (asection **) bfd_malloc (amt); | |
25f72752 AM |
2641 | if (input_list == NULL) |
2642 | return false; | |
2643 | ||
1badb539 AM |
2644 | /* For sections we aren't interested in, mark their entries with a |
2645 | value we can check later. */ | |
2646 | list = input_list + top_index; | |
2647 | do | |
2648 | *list = bfd_abs_section_ptr; | |
2649 | while (list-- != input_list); | |
2650 | ||
2651 | for (section = output_bfd->sections; | |
2652 | section != NULL; | |
2653 | section = section->next) | |
2654 | { | |
47d89dba | 2655 | if ((section->flags & SEC_CODE) != 0) |
1badb539 AM |
2656 | input_list[section->index] = NULL; |
2657 | } | |
2658 | ||
2659 | /* Now actually build the lists. */ | |
25f72752 AM |
2660 | for (input_bfd = info->input_bfds; |
2661 | input_bfd != NULL; | |
2662 | input_bfd = input_bfd->link_next) | |
2663 | { | |
2664 | for (section = input_bfd->sections; | |
2665 | section != NULL; | |
2666 | section = section->next) | |
2667 | { | |
2668 | if (section->output_section != NULL | |
1badb539 AM |
2669 | && section->output_section->owner == output_bfd |
2670 | && section->output_section->index <= top_index) | |
25f72752 AM |
2671 | { |
2672 | list = input_list + section->output_section->index; | |
1badb539 AM |
2673 | if (*list != bfd_abs_section_ptr) |
2674 | { | |
2675 | /* Steal the link_sec pointer for our list. */ | |
83c81bfe | 2676 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
1badb539 AM |
2677 | /* This happens to make the list in reverse order, |
2678 | which is what we want. */ | |
2679 | PREV_SEC (section) = *list; | |
2680 | *list = section; | |
2681 | } | |
25f72752 AM |
2682 | } |
2683 | } | |
2684 | } | |
2685 | ||
2686 | /* See whether we can group stub sections together. Grouping stub | |
2687 | sections may result in fewer stubs. More importantly, we need to | |
2688 | put all .init* and .fini* stubs at the beginning of the .init or | |
2689 | .fini output sections respectively, because glibc splits the | |
2690 | _init and _fini functions into multiple parts. Putting a stub in | |
2691 | the middle of a function is not a good idea. */ | |
a017a724 | 2692 | list = input_list + top_index; |
1badb539 | 2693 | do |
25f72752 AM |
2694 | { |
2695 | asection *tail = *list; | |
1badb539 AM |
2696 | if (tail == bfd_abs_section_ptr) |
2697 | continue; | |
25f72752 AM |
2698 | while (tail != NULL) |
2699 | { | |
2700 | asection *curr; | |
2701 | asection *prev; | |
2702 | bfd_size_type total; | |
2703 | ||
2704 | curr = tail; | |
2705 | if (tail->_cooked_size) | |
2706 | total = tail->_cooked_size; | |
2707 | else | |
2708 | total = tail->_raw_size; | |
2709 | while ((prev = PREV_SEC (curr)) != NULL | |
2710 | && ((total += curr->output_offset - prev->output_offset) | |
47d89dba | 2711 | < stub_group_size)) |
25f72752 AM |
2712 | curr = prev; |
2713 | ||
2714 | /* OK, the size from the start of CURR to the end is less | |
a248e267 | 2715 | than 240000 bytes and thus can be handled by one stub |
25f72752 | 2716 | section. (or the tail section is itself larger than |
a248e267 | 2717 | 240000 bytes, in which case we may be toast.) |
25f72752 AM |
2718 | We should really be keeping track of the total size of |
2719 | stubs added here, as stubs contribute to the final output | |
2720 | section size. That's a little tricky, and this way will | |
a248e267 AM |
2721 | only break if stubs added total more than 22144 bytes, or |
2722 | 2768 long branch stubs. It seems unlikely for more than | |
2723 | 2768 different functions to be called, especially from | |
2724 | code only 240000 bytes long. This limit used to be | |
2725 | 250000, but c++ code tends to generate lots of little | |
2726 | functions, and sometimes violated the assumption. */ | |
25f72752 AM |
2727 | do |
2728 | { | |
2729 | prev = PREV_SEC (tail); | |
2730 | /* Set up this stub group. */ | |
83c81bfe | 2731 | htab->stub_group[tail->id].link_sec = curr; |
25f72752 AM |
2732 | } |
2733 | while (tail != curr && (tail = prev) != NULL); | |
2734 | ||
a248e267 | 2735 | /* But wait, there's more! Input sections up to 240000 |
25f72752 | 2736 | bytes before the stub section can be handled by it too. */ |
47d89dba | 2737 | if (!stubs_always_before_branch) |
25f72752 | 2738 | { |
47d89dba AM |
2739 | total = 0; |
2740 | while (prev != NULL | |
2741 | && ((total += tail->output_offset - prev->output_offset) | |
2742 | < stub_group_size)) | |
2743 | { | |
2744 | tail = prev; | |
2745 | prev = PREV_SEC (tail); | |
83c81bfe | 2746 | htab->stub_group[tail->id].link_sec = curr; |
47d89dba | 2747 | } |
25f72752 AM |
2748 | } |
2749 | tail = prev; | |
2750 | } | |
2751 | } | |
1badb539 | 2752 | while (list-- != input_list); |
25f72752 | 2753 | free (input_list); |
1badb539 | 2754 | #undef PREV_SEC |
30667bf3 AM |
2755 | |
2756 | /* We want to read in symbol extension records only once. To do this | |
2757 | we need to read in the local symbols in parallel and save them for | |
2758 | later use; so hold pointers to the local symbols in an array. */ | |
dc810e39 AM |
2759 | amt = sizeof (Elf_Internal_Sym *) * bfd_count; |
2760 | all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); | |
30667bf3 | 2761 | if (all_local_syms == NULL) |
25f72752 | 2762 | return false; |
30667bf3 AM |
2763 | |
2764 | /* Walk over all the input BFDs, swapping in local symbols. | |
2765 | If we are creating a shared library, create hash entries for the | |
2766 | export stubs. */ | |
25f72752 | 2767 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2768 | input_bfd != NULL; |
25f72752 | 2769 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2770 | { |
2771 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 2772 | Elf_Internal_Shdr *shndx_hdr; |
30667bf3 | 2773 | Elf_Internal_Sym *isym; |
25f72752 | 2774 | Elf32_External_Sym *ext_syms, *esym, *end_sy; |
9ad5cbcf | 2775 | Elf_External_Sym_Shndx *shndx_buf, *shndx; |
dc810e39 | 2776 | bfd_size_type sec_size; |
edd21aca | 2777 | |
252b5132 RH |
2778 | /* We'll need the symbol table in a second. */ |
2779 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2780 | if (symtab_hdr->sh_info == 0) | |
2781 | continue; | |
2782 | ||
edd21aca AM |
2783 | /* We need an array of the local symbols attached to the input bfd. |
2784 | Unfortunately, we're going to have to read & swap them in. */ | |
dc810e39 AM |
2785 | sec_size = symtab_hdr->sh_info; |
2786 | sec_size *= sizeof (Elf_Internal_Sym); | |
2787 | local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size); | |
edd21aca | 2788 | if (local_syms == NULL) |
9ad5cbcf AM |
2789 | goto error_ret_free_local; |
2790 | ||
25f72752 | 2791 | all_local_syms[bfd_indx] = local_syms; |
dc810e39 AM |
2792 | sec_size = symtab_hdr->sh_info; |
2793 | sec_size *= sizeof (Elf32_External_Sym); | |
2794 | ext_syms = (Elf32_External_Sym *) bfd_malloc (sec_size); | |
edd21aca | 2795 | if (ext_syms == NULL) |
9ad5cbcf | 2796 | goto error_ret_free_local; |
edd21aca AM |
2797 | |
2798 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
9ad5cbcf | 2799 | || bfd_bread ((PTR) ext_syms, sec_size, input_bfd) != sec_size) |
edd21aca | 2800 | { |
9ad5cbcf | 2801 | error_ret_free_ext_syms: |
edd21aca AM |
2802 | free (ext_syms); |
2803 | goto error_ret_free_local; | |
2804 | } | |
2805 | ||
9ad5cbcf AM |
2806 | shndx_buf = NULL; |
2807 | shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr; | |
2808 | if (shndx_hdr->sh_size != 0) | |
2809 | { | |
2810 | sec_size = symtab_hdr->sh_info; | |
2811 | sec_size *= sizeof (Elf_External_Sym_Shndx); | |
2812 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (sec_size); | |
2813 | if (shndx_buf == NULL) | |
2814 | goto error_ret_free_ext_syms; | |
2815 | ||
2816 | if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
2817 | || bfd_bread ((PTR) shndx_buf, sec_size, input_bfd) != sec_size) | |
2818 | { | |
2819 | free (shndx_buf); | |
2820 | goto error_ret_free_ext_syms; | |
2821 | } | |
2822 | } | |
2823 | ||
edd21aca | 2824 | /* Swap the local symbols in. */ |
9ad5cbcf AM |
2825 | for (esym = ext_syms, end_sy = esym + symtab_hdr->sh_info, |
2826 | isym = local_syms, shndx = shndx_buf; | |
2827 | esym < end_sy; | |
2828 | esym++, isym++, shndx = (shndx ? shndx + 1 : NULL)) | |
2829 | bfd_elf32_swap_symbol_in (input_bfd, esym, shndx, isym); | |
edd21aca AM |
2830 | |
2831 | /* Now we can free the external symbols. */ | |
9ad5cbcf | 2832 | free (shndx_buf); |
edd21aca | 2833 | free (ext_syms); |
edd21aca | 2834 | |
83c81bfe | 2835 | if (info->shared && htab->multi_subspace) |
30667bf3 | 2836 | { |
25f72752 AM |
2837 | struct elf_link_hash_entry **sym_hashes; |
2838 | struct elf_link_hash_entry **end_hashes; | |
30667bf3 AM |
2839 | unsigned int symcount; |
2840 | ||
2841 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
2842 | - symtab_hdr->sh_info); | |
25f72752 AM |
2843 | sym_hashes = elf_sym_hashes (input_bfd); |
2844 | end_hashes = sym_hashes + symcount; | |
30667bf3 AM |
2845 | |
2846 | /* Look through the global syms for functions; We need to | |
2847 | build export stubs for all globally visible functions. */ | |
25f72752 | 2848 | for (; sym_hashes < end_hashes; sym_hashes++) |
30667bf3 AM |
2849 | { |
2850 | struct elf32_hppa_link_hash_entry *hash; | |
2851 | ||
25f72752 | 2852 | hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes; |
30667bf3 AM |
2853 | |
2854 | while (hash->elf.root.type == bfd_link_hash_indirect | |
2855 | || hash->elf.root.type == bfd_link_hash_warning) | |
2856 | hash = ((struct elf32_hppa_link_hash_entry *) | |
2857 | hash->elf.root.u.i.link); | |
2858 | ||
2859 | /* At this point in the link, undefined syms have been | |
2860 | resolved, so we need to check that the symbol was | |
2861 | defined in this BFD. */ | |
2862 | if ((hash->elf.root.type == bfd_link_hash_defined | |
2863 | || hash->elf.root.type == bfd_link_hash_defweak) | |
2864 | && hash->elf.type == STT_FUNC | |
2865 | && hash->elf.root.u.def.section->output_section != NULL | |
25f72752 AM |
2866 | && (hash->elf.root.u.def.section->output_section->owner |
2867 | == output_bfd) | |
30667bf3 AM |
2868 | && hash->elf.root.u.def.section->owner == input_bfd |
2869 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
2870 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) | |
2871 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT) | |
2872 | { | |
2873 | asection *sec; | |
2874 | const char *stub_name; | |
2875 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2876 | ||
2877 | sec = hash->elf.root.u.def.section; | |
2878 | stub_name = hash->elf.root.root.string; | |
83c81bfe | 2879 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, |
30667bf3 AM |
2880 | stub_name, |
2881 | false, false); | |
2882 | if (stub_entry == NULL) | |
2883 | { | |
83c81bfe | 2884 | stub_entry = hppa_add_stub (stub_name, sec, htab); |
30667bf3 AM |
2885 | if (!stub_entry) |
2886 | goto error_ret_free_local; | |
2887 | ||
2888 | stub_entry->target_value = hash->elf.root.u.def.value; | |
2889 | stub_entry->target_section = hash->elf.root.u.def.section; | |
2890 | stub_entry->stub_type = hppa_stub_export; | |
2891 | stub_entry->h = hash; | |
2892 | stub_changed = 1; | |
2893 | } | |
2894 | else | |
2895 | { | |
2896 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"), | |
8f615d07 AM |
2897 | bfd_archive_filename (input_bfd), |
2898 | stub_name); | |
30667bf3 AM |
2899 | } |
2900 | } | |
2901 | } | |
30667bf3 AM |
2902 | } |
2903 | } | |
edd21aca AM |
2904 | |
2905 | while (1) | |
2906 | { | |
30667bf3 AM |
2907 | asection *stub_sec; |
2908 | ||
25f72752 | 2909 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
30667bf3 | 2910 | input_bfd != NULL; |
25f72752 | 2911 | input_bfd = input_bfd->link_next, bfd_indx++) |
30667bf3 AM |
2912 | { |
2913 | Elf_Internal_Shdr *symtab_hdr; | |
2914 | ||
2915 | /* We'll need the symbol table in a second. */ | |
2916 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2917 | if (symtab_hdr->sh_info == 0) | |
2918 | continue; | |
2919 | ||
25f72752 | 2920 | local_syms = all_local_syms[bfd_indx]; |
30667bf3 AM |
2921 | |
2922 | /* Walk over each section attached to the input bfd. */ | |
2923 | for (section = input_bfd->sections; | |
2924 | section != NULL; | |
25f72752 | 2925 | section = section->next) |
30667bf3 AM |
2926 | { |
2927 | Elf_Internal_Shdr *input_rel_hdr; | |
2928 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2929 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2930 | ||
2931 | /* If there aren't any relocs, then there's nothing more | |
2932 | to do. */ | |
2933 | if ((section->flags & SEC_RELOC) == 0 | |
2934 | || section->reloc_count == 0) | |
2935 | continue; | |
2936 | ||
25f72752 AM |
2937 | /* If this section is a link-once section that will be |
2938 | discarded, then don't create any stubs. */ | |
2939 | if (section->output_section == NULL | |
2940 | || section->output_section->owner != output_bfd) | |
2941 | continue; | |
2942 | ||
30667bf3 | 2943 | /* Allocate space for the external relocations. */ |
dc810e39 AM |
2944 | amt = section->reloc_count; |
2945 | amt *= sizeof (Elf32_External_Rela); | |
2946 | external_relocs = (Elf32_External_Rela *) bfd_malloc (amt); | |
30667bf3 AM |
2947 | if (external_relocs == NULL) |
2948 | { | |
2949 | goto error_ret_free_local; | |
2950 | } | |
2951 | ||
2952 | /* Likewise for the internal relocations. */ | |
dc810e39 AM |
2953 | amt = section->reloc_count; |
2954 | amt *= sizeof (Elf_Internal_Rela); | |
2955 | internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt); | |
30667bf3 AM |
2956 | if (internal_relocs == NULL) |
2957 | { | |
2958 | free (external_relocs); | |
2959 | goto error_ret_free_local; | |
2960 | } | |
2961 | ||
2962 | /* Read in the external relocs. */ | |
2963 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2964 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
9ad5cbcf AM |
2965 | || bfd_bread ((PTR) external_relocs, |
2966 | input_rel_hdr->sh_size, | |
2967 | input_bfd) != input_rel_hdr->sh_size) | |
30667bf3 AM |
2968 | { |
2969 | free (external_relocs); | |
2970 | error_ret_free_internal: | |
2971 | free (internal_relocs); | |
2972 | goto error_ret_free_local; | |
2973 | } | |
2974 | ||
2975 | /* Swap in the relocs. */ | |
2976 | erela = external_relocs; | |
2977 | erelaend = erela + section->reloc_count; | |
2978 | irela = internal_relocs; | |
2979 | for (; erela < erelaend; erela++, irela++) | |
2980 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
2981 | ||
2982 | /* We're done with the external relocs, free them. */ | |
2983 | free (external_relocs); | |
2984 | ||
2985 | /* Now examine each relocation. */ | |
2986 | irela = internal_relocs; | |
2987 | irelaend = irela + section->reloc_count; | |
2988 | for (; irela < irelaend; irela++) | |
2989 | { | |
2990 | unsigned int r_type, r_indx; | |
2991 | enum elf32_hppa_stub_type stub_type; | |
2992 | struct elf32_hppa_stub_hash_entry *stub_entry; | |
2993 | asection *sym_sec; | |
2994 | bfd_vma sym_value; | |
2995 | bfd_vma destination; | |
2996 | struct elf32_hppa_link_hash_entry *hash; | |
2997 | char *stub_name; | |
25f72752 | 2998 | const asection *id_sec; |
30667bf3 AM |
2999 | |
3000 | r_type = ELF32_R_TYPE (irela->r_info); | |
3001 | r_indx = ELF32_R_SYM (irela->r_info); | |
3002 | ||
3003 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3004 | { | |
3005 | bfd_set_error (bfd_error_bad_value); | |
3006 | goto error_ret_free_internal; | |
3007 | } | |
3008 | ||
3009 | /* Only look for stubs on call instructions. */ | |
3010 | if (r_type != (unsigned int) R_PARISC_PCREL12F | |
3011 | && r_type != (unsigned int) R_PARISC_PCREL17F | |
3012 | && r_type != (unsigned int) R_PARISC_PCREL22F) | |
3013 | continue; | |
3014 | ||
3015 | /* Now determine the call target, its name, value, | |
3016 | section. */ | |
3017 | sym_sec = NULL; | |
3018 | sym_value = 0; | |
3019 | destination = 0; | |
3020 | hash = NULL; | |
3021 | if (r_indx < symtab_hdr->sh_info) | |
3022 | { | |
3023 | /* It's a local symbol. */ | |
3024 | Elf_Internal_Sym *sym; | |
3025 | Elf_Internal_Shdr *hdr; | |
3026 | ||
3027 | sym = local_syms + r_indx; | |
3028 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3029 | sym_sec = hdr->bfd_section; | |
3030 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3031 | sym_value = sym->st_value; | |
3032 | destination = (sym_value + irela->r_addend | |
3033 | + sym_sec->output_offset | |
3034 | + sym_sec->output_section->vma); | |
3035 | } | |
3036 | else | |
3037 | { | |
3038 | /* It's an external symbol. */ | |
3039 | int e_indx; | |
3040 | ||
3041 | e_indx = r_indx - symtab_hdr->sh_info; | |
3042 | hash = ((struct elf32_hppa_link_hash_entry *) | |
3043 | elf_sym_hashes (input_bfd)[e_indx]); | |
3044 | ||
3045 | while (hash->elf.root.type == bfd_link_hash_indirect | |
3046 | || hash->elf.root.type == bfd_link_hash_warning) | |
3047 | hash = ((struct elf32_hppa_link_hash_entry *) | |
3048 | hash->elf.root.u.i.link); | |
3049 | ||
3050 | if (hash->elf.root.type == bfd_link_hash_defined | |
3051 | || hash->elf.root.type == bfd_link_hash_defweak) | |
3052 | { | |
3053 | sym_sec = hash->elf.root.u.def.section; | |
3054 | sym_value = hash->elf.root.u.def.value; | |
3055 | if (sym_sec->output_section != NULL) | |
3056 | destination = (sym_value + irela->r_addend | |
3057 | + sym_sec->output_offset | |
3058 | + sym_sec->output_section->vma); | |
3059 | } | |
3060 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
3061 | { | |
3062 | if (! info->shared) | |
3063 | continue; | |
3064 | } | |
3065 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
3066 | { | |
3067 | if (! (info->shared | |
3068 | && !info->no_undefined | |
3069 | && (ELF_ST_VISIBILITY (hash->elf.other) | |
2a5aaecb AM |
3070 | == STV_DEFAULT) |
3071 | && hash->elf.type != STT_PARISC_MILLI)) | |
30667bf3 AM |
3072 | continue; |
3073 | } | |
3074 | else | |
3075 | { | |
3076 | bfd_set_error (bfd_error_bad_value); | |
3077 | goto error_ret_free_internal; | |
3078 | } | |
3079 | } | |
3080 | ||
3081 | /* Determine what (if any) linker stub is needed. */ | |
3082 | stub_type = hppa_type_of_stub (section, irela, hash, | |
3083 | destination); | |
3084 | if (stub_type == hppa_stub_none) | |
3085 | continue; | |
3086 | ||
25f72752 | 3087 | /* Support for grouping stub sections. */ |
83c81bfe | 3088 | id_sec = htab->stub_group[section->id].link_sec; |
25f72752 | 3089 | |
30667bf3 | 3090 | /* Get the name of this stub. */ |
25f72752 | 3091 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela); |
30667bf3 AM |
3092 | if (!stub_name) |
3093 | goto error_ret_free_internal; | |
3094 | ||
83c81bfe | 3095 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, |
30667bf3 AM |
3096 | stub_name, |
3097 | false, false); | |
3098 | if (stub_entry != NULL) | |
3099 | { | |
3100 | /* The proper stub has already been created. */ | |
3101 | free (stub_name); | |
3102 | continue; | |
3103 | } | |
3104 | ||
83c81bfe | 3105 | stub_entry = hppa_add_stub (stub_name, section, htab); |
30667bf3 AM |
3106 | if (stub_entry == NULL) |
3107 | { | |
3108 | free (stub_name); | |
3109 | goto error_ret_free_local; | |
3110 | } | |
3111 | ||
3112 | stub_entry->target_value = sym_value; | |
3113 | stub_entry->target_section = sym_sec; | |
3114 | stub_entry->stub_type = stub_type; | |
3115 | if (info->shared) | |
3116 | { | |
3117 | if (stub_type == hppa_stub_import) | |
3118 | stub_entry->stub_type = hppa_stub_import_shared; | |
98ceb8ce | 3119 | else if (stub_type == hppa_stub_long_branch) |
30667bf3 AM |
3120 | stub_entry->stub_type = hppa_stub_long_branch_shared; |
3121 | } | |
3122 | stub_entry->h = hash; | |
3123 | stub_changed = 1; | |
3124 | } | |
3125 | ||
3126 | /* We're done with the internal relocs, free them. */ | |
3127 | free (internal_relocs); | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | if (!stub_changed) | |
3132 | break; | |
3133 | ||
3134 | /* OK, we've added some stubs. Find out the new size of the | |
3135 | stub sections. */ | |
83c81bfe | 3136 | for (stub_sec = htab->stub_bfd->sections; |
30667bf3 AM |
3137 | stub_sec != NULL; |
3138 | stub_sec = stub_sec->next) | |
3139 | { | |
74d1c347 AM |
3140 | stub_sec->_raw_size = 0; |
3141 | stub_sec->_cooked_size = 0; | |
3142 | } | |
74d1c347 | 3143 | |
83c81bfe | 3144 | bfd_hash_traverse (&htab->stub_hash_table, hppa_size_one_stub, htab); |
74d1c347 | 3145 | |
30667bf3 | 3146 | /* Ask the linker to do its stuff. */ |
83c81bfe | 3147 | (*htab->layout_sections_again) (); |
30667bf3 AM |
3148 | stub_changed = 0; |
3149 | } | |
3150 | ||
25f72752 | 3151 | ret = 1; |
30667bf3 AM |
3152 | |
3153 | error_ret_free_local: | |
25f72752 AM |
3154 | while (bfd_count-- > 0) |
3155 | if (all_local_syms[bfd_count]) | |
3156 | free (all_local_syms[bfd_count]); | |
30667bf3 AM |
3157 | free (all_local_syms); |
3158 | ||
25f72752 | 3159 | return ret; |
30667bf3 AM |
3160 | } |
3161 | ||
30667bf3 AM |
3162 | /* For a final link, this function is called after we have sized the |
3163 | stubs to provide a value for __gp. */ | |
3164 | ||
3165 | boolean | |
3166 | elf32_hppa_set_gp (abfd, info) | |
3167 | bfd *abfd; | |
3168 | struct bfd_link_info *info; | |
3169 | { | |
83c81bfe | 3170 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
3171 | struct elf_link_hash_entry *h; |
3172 | asection *sec; | |
3173 | bfd_vma gp_val; | |
3174 | ||
83c81bfe | 3175 | htab = hppa_link_hash_table (info); |
ebe50bae | 3176 | h = elf_link_hash_lookup (&htab->elf, "$global$", false, false, false); |
30667bf3 | 3177 | |
df8634e3 AM |
3178 | if (h != NULL |
3179 | && (h->root.type == bfd_link_hash_defined | |
3180 | || h->root.type == bfd_link_hash_defweak)) | |
30667bf3 AM |
3181 | { |
3182 | gp_val = h->root.u.def.value; | |
3183 | sec = h->root.u.def.section; | |
3184 | } | |
3185 | else | |
3186 | { | |
74d1c347 AM |
3187 | /* Choose to point our LTP at, in this order, one of .plt, .got, |
3188 | or .data, if these sections exist. In the case of choosing | |
3189 | .plt try to make the LTP ideal for addressing anywhere in the | |
3190 | .plt or .got with a 14 bit signed offset. Typically, the end | |
3191 | of the .plt is the start of the .got, so choose .plt + 0x2000 | |
3192 | if either the .plt or .got is larger than 0x2000. If both | |
3193 | the .plt and .got are smaller than 0x2000, choose the end of | |
3194 | the .plt section. */ | |
3195 | ||
83c81bfe | 3196 | sec = htab->splt; |
74d1c347 | 3197 | if (sec != NULL) |
30667bf3 | 3198 | { |
74d1c347 AM |
3199 | gp_val = sec->_raw_size; |
3200 | if (gp_val > 0x2000 | |
83c81bfe | 3201 | || (htab->sgot && htab->sgot->_raw_size > 0x2000)) |
74d1c347 AM |
3202 | { |
3203 | gp_val = 0x2000; | |
3204 | } | |
3205 | } | |
3206 | else | |
3207 | { | |
3208 | gp_val = 0; | |
83c81bfe | 3209 | sec = htab->sgot; |
74d1c347 AM |
3210 | if (sec != NULL) |
3211 | { | |
3212 | /* We know we don't have a .plt. If .got is large, | |
3213 | offset our LTP. */ | |
3214 | if (sec->_raw_size > 0x2000) | |
3215 | gp_val = 0x2000; | |
3216 | } | |
3217 | else | |
3218 | { | |
3219 | /* No .plt or .got. Who cares what the LTP is? */ | |
3220 | sec = bfd_get_section_by_name (abfd, ".data"); | |
3221 | } | |
30667bf3 | 3222 | } |
df8634e3 AM |
3223 | |
3224 | if (h != NULL) | |
3225 | { | |
3226 | h->root.type = bfd_link_hash_defined; | |
3227 | h->root.u.def.value = gp_val; | |
3228 | if (sec != NULL) | |
3229 | h->root.u.def.section = sec; | |
3230 | else | |
3231 | h->root.u.def.section = bfd_abs_section_ptr; | |
3232 | } | |
30667bf3 AM |
3233 | } |
3234 | ||
b32b5d6e | 3235 | if (sec != NULL && sec->output_section != NULL) |
74d1c347 AM |
3236 | gp_val += sec->output_section->vma + sec->output_offset; |
3237 | ||
3238 | elf_gp (abfd) = gp_val; | |
30667bf3 AM |
3239 | return true; |
3240 | } | |
3241 | ||
30667bf3 AM |
3242 | /* Build all the stubs associated with the current output file. The |
3243 | stubs are kept in a hash table attached to the main linker hash | |
3244 | table. We also set up the .plt entries for statically linked PIC | |
3245 | functions here. This function is called via hppaelf_finish in the | |
3246 | linker. */ | |
3247 | ||
3248 | boolean | |
3249 | elf32_hppa_build_stubs (info) | |
3250 | struct bfd_link_info *info; | |
3251 | { | |
3252 | asection *stub_sec; | |
3253 | struct bfd_hash_table *table; | |
83c81bfe | 3254 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 | 3255 | |
83c81bfe | 3256 | htab = hppa_link_hash_table (info); |
30667bf3 | 3257 | |
83c81bfe | 3258 | for (stub_sec = htab->stub_bfd->sections; |
30667bf3 AM |
3259 | stub_sec != NULL; |
3260 | stub_sec = stub_sec->next) | |
3261 | { | |
dc810e39 | 3262 | bfd_size_type size; |
30667bf3 AM |
3263 | |
3264 | /* Allocate memory to hold the linker stubs. */ | |
74d1c347 | 3265 | size = stub_sec->_raw_size; |
83c81bfe | 3266 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); |
30667bf3 AM |
3267 | if (stub_sec->contents == NULL && size != 0) |
3268 | return false; | |
74d1c347 | 3269 | stub_sec->_raw_size = 0; |
30667bf3 AM |
3270 | } |
3271 | ||
3272 | /* Build the stubs as directed by the stub hash table. */ | |
83c81bfe | 3273 | table = &htab->stub_hash_table; |
30667bf3 AM |
3274 | bfd_hash_traverse (table, hppa_build_one_stub, info); |
3275 | ||
3276 | return true; | |
3277 | } | |
3278 | ||
c46b7515 AM |
3279 | /* Perform a final link. */ |
3280 | ||
3281 | static boolean | |
3282 | elf32_hppa_final_link (abfd, info) | |
3283 | bfd *abfd; | |
3284 | struct bfd_link_info *info; | |
3285 | { | |
3286 | asection *s; | |
3287 | ||
4dc86686 AM |
3288 | /* Invoke the regular ELF linker to do all the work. */ |
3289 | if (!bfd_elf32_bfd_final_link (abfd, info)) | |
c46b7515 AM |
3290 | return false; |
3291 | ||
3292 | /* If we're producing a final executable, sort the contents of the | |
3293 | unwind section. Magic section names, but this is much safer than | |
3294 | having elf32_hppa_relocate_section remember where SEGREL32 relocs | |
3295 | occurred. Consider what happens if someone inept creates a | |
3296 | linker script that puts unwind information in .text. */ | |
3297 | s = bfd_get_section_by_name (abfd, ".PARISC.unwind"); | |
3298 | if (s != NULL) | |
3299 | { | |
3300 | bfd_size_type size; | |
3301 | char *contents; | |
3302 | ||
3303 | size = s->_raw_size; | |
3304 | contents = bfd_malloc (size); | |
3305 | if (contents == NULL) | |
3306 | return false; | |
3307 | ||
3308 | if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size)) | |
3309 | return false; | |
3310 | ||
dc810e39 | 3311 | qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare); |
c46b7515 AM |
3312 | |
3313 | if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size)) | |
3314 | return false; | |
3315 | } | |
3316 | return true; | |
3317 | } | |
3318 | ||
3319 | /* Record the lowest address for the data and text segments. */ | |
3320 | ||
3321 | static void | |
3322 | hppa_record_segment_addr (abfd, section, data) | |
3323 | bfd *abfd ATTRIBUTE_UNUSED; | |
3324 | asection *section; | |
3325 | PTR data; | |
3326 | { | |
83c81bfe | 3327 | struct elf32_hppa_link_hash_table *htab; |
c46b7515 | 3328 | |
83c81bfe | 3329 | htab = (struct elf32_hppa_link_hash_table *) data; |
c46b7515 AM |
3330 | |
3331 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
3332 | { | |
3333 | bfd_vma value = section->vma - section->filepos; | |
3334 | ||
3335 | if ((section->flags & SEC_READONLY) != 0) | |
3336 | { | |
83c81bfe AM |
3337 | if (value < htab->text_segment_base) |
3338 | htab->text_segment_base = value; | |
c46b7515 AM |
3339 | } |
3340 | else | |
3341 | { | |
83c81bfe AM |
3342 | if (value < htab->data_segment_base) |
3343 | htab->data_segment_base = value; | |
c46b7515 AM |
3344 | } |
3345 | } | |
3346 | } | |
3347 | ||
30667bf3 AM |
3348 | /* Perform a relocation as part of a final link. */ |
3349 | ||
3350 | static bfd_reloc_status_type | |
83c81bfe | 3351 | final_link_relocate (input_section, contents, rel, value, htab, sym_sec, h) |
30667bf3 AM |
3352 | asection *input_section; |
3353 | bfd_byte *contents; | |
3354 | const Elf_Internal_Rela *rel; | |
3355 | bfd_vma value; | |
83c81bfe | 3356 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
3357 | asection *sym_sec; |
3358 | struct elf32_hppa_link_hash_entry *h; | |
3359 | { | |
3360 | int insn; | |
3361 | unsigned int r_type = ELF32_R_TYPE (rel->r_info); | |
3362 | reloc_howto_type *howto = elf_hppa_howto_table + r_type; | |
3363 | int r_format = howto->bitsize; | |
3364 | enum hppa_reloc_field_selector_type_alt r_field; | |
3365 | bfd *input_bfd = input_section->owner; | |
3366 | bfd_vma offset = rel->r_offset; | |
3367 | bfd_vma max_branch_offset = 0; | |
3368 | bfd_byte *hit_data = contents + offset; | |
3369 | bfd_signed_vma addend = rel->r_addend; | |
3370 | bfd_vma location; | |
3371 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL; | |
3372 | int val; | |
3373 | ||
3374 | if (r_type == R_PARISC_NONE) | |
3375 | return bfd_reloc_ok; | |
3376 | ||
3377 | insn = bfd_get_32 (input_bfd, hit_data); | |
3378 | ||
3379 | /* Find out where we are and where we're going. */ | |
3380 | location = (offset + | |
3381 | input_section->output_offset + | |
3382 | input_section->output_section->vma); | |
3383 | ||
3384 | switch (r_type) | |
3385 | { | |
3386 | case R_PARISC_PCREL12F: | |
3387 | case R_PARISC_PCREL17F: | |
3388 | case R_PARISC_PCREL22F: | |
3389 | /* If this is a call to a function defined in another dynamic | |
3390 | library, or if it is a call to a PIC function in the same | |
74d1c347 AM |
3391 | object, or if this is a shared link and it is a call to a |
3392 | weak symbol which may or may not be in the same object, then | |
3393 | find the import stub in the stub hash. */ | |
30667bf3 AM |
3394 | if (sym_sec == NULL |
3395 | || sym_sec->output_section == NULL | |
12cca0d2 AM |
3396 | || (h != NULL |
3397 | && ((h->maybe_pic_call | |
3398 | && !(input_section->flags & SEC_HAS_GOT_REF)) | |
3399 | || (h->elf.root.type == bfd_link_hash_defweak | |
3400 | && h->elf.dynindx != -1 | |
3401 | && h->elf.plt.offset != (bfd_vma) -1)))) | |
30667bf3 AM |
3402 | { |
3403 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
83c81bfe | 3404 | h, rel, htab); |
30667bf3 AM |
3405 | if (stub_entry != NULL) |
3406 | { | |
3407 | value = (stub_entry->stub_offset | |
3408 | + stub_entry->stub_sec->output_offset | |
3409 | + stub_entry->stub_sec->output_section->vma); | |
3410 | addend = 0; | |
3411 | } | |
3412 | else if (sym_sec == NULL && h != NULL | |
3413 | && h->elf.root.type == bfd_link_hash_undefweak) | |
3414 | { | |
db20fd76 AM |
3415 | /* It's OK if undefined weak. Calls to undefined weak |
3416 | symbols behave as if the "called" function | |
3417 | immediately returns. We can thus call to a weak | |
3418 | function without first checking whether the function | |
3419 | is defined. */ | |
30667bf3 | 3420 | value = location; |
db20fd76 | 3421 | addend = 8; |
30667bf3 AM |
3422 | } |
3423 | else | |
f09ebc7d | 3424 | return bfd_reloc_undefined; |
30667bf3 AM |
3425 | } |
3426 | /* Fall thru. */ | |
3427 | ||
3428 | case R_PARISC_PCREL21L: | |
3429 | case R_PARISC_PCREL17C: | |
3430 | case R_PARISC_PCREL17R: | |
3431 | case R_PARISC_PCREL14R: | |
3432 | case R_PARISC_PCREL14F: | |
3433 | /* Make it a pc relative offset. */ | |
3434 | value -= location; | |
3435 | addend -= 8; | |
3436 | break; | |
3437 | ||
3438 | case R_PARISC_DPREL21L: | |
3439 | case R_PARISC_DPREL14R: | |
3440 | case R_PARISC_DPREL14F: | |
3441 | /* For all the DP relative relocations, we need to examine the symbol's | |
3442 | section. If it's a code section, then "data pointer relative" makes | |
3443 | no sense. In that case we don't adjust the "value", and for 21 bit | |
3444 | addil instructions, we change the source addend register from %dp to | |
3445 | %r0. This situation commonly arises when a variable's "constness" | |
3446 | is declared differently from the way the variable is defined. For | |
3447 | instance: "extern int foo" with foo defined as "const int foo". */ | |
3448 | if (sym_sec == NULL) | |
3449 | break; | |
3450 | if ((sym_sec->flags & SEC_CODE) != 0) | |
3451 | { | |
3452 | if ((insn & ((0x3f << 26) | (0x1f << 21))) | |
3453 | == (((int) OP_ADDIL << 26) | (27 << 21))) | |
3454 | { | |
3455 | insn &= ~ (0x1f << 21); | |
74d1c347 | 3456 | #if 1 /* debug them. */ |
30667bf3 AM |
3457 | (*_bfd_error_handler) |
3458 | (_("%s(%s+0x%lx): fixing %s"), | |
8f615d07 | 3459 | bfd_archive_filename (input_bfd), |
30667bf3 AM |
3460 | input_section->name, |
3461 | (long) rel->r_offset, | |
3462 | howto->name); | |
3463 | #endif | |
3464 | } | |
3465 | /* Now try to make things easy for the dynamic linker. */ | |
3466 | ||
3467 | break; | |
3468 | } | |
74d1c347 | 3469 | /* Fall thru. */ |
30667bf3 AM |
3470 | |
3471 | case R_PARISC_DLTIND21L: | |
3472 | case R_PARISC_DLTIND14R: | |
3473 | case R_PARISC_DLTIND14F: | |
3474 | value -= elf_gp (input_section->output_section->owner); | |
3475 | break; | |
3476 | ||
c46b7515 AM |
3477 | case R_PARISC_SEGREL32: |
3478 | if ((sym_sec->flags & SEC_CODE) != 0) | |
83c81bfe | 3479 | value -= htab->text_segment_base; |
c46b7515 | 3480 | else |
83c81bfe | 3481 | value -= htab->data_segment_base; |
c46b7515 AM |
3482 | break; |
3483 | ||
30667bf3 AM |
3484 | default: |
3485 | break; | |
3486 | } | |
3487 | ||
3488 | switch (r_type) | |
3489 | { | |
3490 | case R_PARISC_DIR32: | |
47d89dba | 3491 | case R_PARISC_DIR14F: |
30667bf3 AM |
3492 | case R_PARISC_DIR17F: |
3493 | case R_PARISC_PCREL17C: | |
3494 | case R_PARISC_PCREL14F: | |
3495 | case R_PARISC_DPREL14F: | |
3496 | case R_PARISC_PLABEL32: | |
3497 | case R_PARISC_DLTIND14F: | |
3498 | case R_PARISC_SEGBASE: | |
3499 | case R_PARISC_SEGREL32: | |
3500 | r_field = e_fsel; | |
3501 | break; | |
3502 | ||
1bf42538 | 3503 | case R_PARISC_DLTIND21L: |
30667bf3 | 3504 | case R_PARISC_PCREL21L: |
30667bf3 | 3505 | case R_PARISC_PLABEL21L: |
1bf42538 JL |
3506 | r_field = e_lsel; |
3507 | break; | |
3508 | ||
3509 | case R_PARISC_DIR21L: | |
3510 | case R_PARISC_DPREL21L: | |
30667bf3 AM |
3511 | r_field = e_lrsel; |
3512 | break; | |
3513 | ||
30667bf3 | 3514 | case R_PARISC_PCREL17R: |
30667bf3 | 3515 | case R_PARISC_PCREL14R: |
30667bf3 AM |
3516 | case R_PARISC_PLABEL14R: |
3517 | case R_PARISC_DLTIND14R: | |
1bf42538 JL |
3518 | r_field = e_rsel; |
3519 | break; | |
3520 | ||
3521 | case R_PARISC_DIR17R: | |
3522 | case R_PARISC_DIR14R: | |
3523 | case R_PARISC_DPREL14R: | |
30667bf3 AM |
3524 | r_field = e_rrsel; |
3525 | break; | |
3526 | ||
3527 | case R_PARISC_PCREL12F: | |
3528 | case R_PARISC_PCREL17F: | |
3529 | case R_PARISC_PCREL22F: | |
3530 | r_field = e_fsel; | |
3531 | ||
3532 | if (r_type == (unsigned int) R_PARISC_PCREL17F) | |
3533 | { | |
3534 | max_branch_offset = (1 << (17-1)) << 2; | |
3535 | } | |
3536 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) | |
3537 | { | |
3538 | max_branch_offset = (1 << (12-1)) << 2; | |
3539 | } | |
3540 | else | |
3541 | { | |
3542 | max_branch_offset = (1 << (22-1)) << 2; | |
3543 | } | |
3544 | ||
3545 | /* sym_sec is NULL on undefined weak syms or when shared on | |
3546 | undefined syms. We've already checked for a stub for the | |
3547 | shared undefined case. */ | |
3548 | if (sym_sec == NULL) | |
3549 | break; | |
3550 | ||
3551 | /* If the branch is out of reach, then redirect the | |
3552 | call to the local stub for this function. */ | |
3553 | if (value + addend + max_branch_offset >= 2*max_branch_offset) | |
3554 | { | |
3555 | stub_entry = hppa_get_stub_entry (input_section, sym_sec, | |
83c81bfe | 3556 | h, rel, htab); |
30667bf3 | 3557 | if (stub_entry == NULL) |
f09ebc7d | 3558 | return bfd_reloc_undefined; |
30667bf3 AM |
3559 | |
3560 | /* Munge up the value and addend so that we call the stub | |
3561 | rather than the procedure directly. */ | |
3562 | value = (stub_entry->stub_offset | |
3563 | + stub_entry->stub_sec->output_offset | |
3564 | + stub_entry->stub_sec->output_section->vma | |
3565 | - location); | |
3566 | addend = -8; | |
3567 | } | |
3568 | break; | |
3569 | ||
3570 | /* Something we don't know how to handle. */ | |
3571 | default: | |
3572 | return bfd_reloc_notsupported; | |
3573 | } | |
3574 | ||
3575 | /* Make sure we can reach the stub. */ | |
3576 | if (max_branch_offset != 0 | |
3577 | && value + addend + max_branch_offset >= 2*max_branch_offset) | |
3578 | { | |
3579 | (*_bfd_error_handler) | |
3580 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), | |
8f615d07 | 3581 | bfd_archive_filename (input_bfd), |
30667bf3 AM |
3582 | input_section->name, |
3583 | (long) rel->r_offset, | |
3584 | stub_entry->root.string); | |
ce757d15 | 3585 | bfd_set_error (bfd_error_bad_value); |
30667bf3 AM |
3586 | return bfd_reloc_notsupported; |
3587 | } | |
3588 | ||
3589 | val = hppa_field_adjust (value, addend, r_field); | |
3590 | ||
3591 | switch (r_type) | |
3592 | { | |
3593 | case R_PARISC_PCREL12F: | |
3594 | case R_PARISC_PCREL17C: | |
3595 | case R_PARISC_PCREL17F: | |
3596 | case R_PARISC_PCREL17R: | |
3597 | case R_PARISC_PCREL22F: | |
3598 | case R_PARISC_DIR17F: | |
3599 | case R_PARISC_DIR17R: | |
3600 | /* This is a branch. Divide the offset by four. | |
3601 | Note that we need to decide whether it's a branch or | |
3602 | otherwise by inspecting the reloc. Inspecting insn won't | |
3603 | work as insn might be from a .word directive. */ | |
3604 | val >>= 2; | |
3605 | break; | |
3606 | ||
3607 | default: | |
3608 | break; | |
3609 | } | |
3610 | ||
3611 | insn = hppa_rebuild_insn (insn, val, r_format); | |
3612 | ||
3613 | /* Update the instruction word. */ | |
74d1c347 | 3614 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); |
30667bf3 AM |
3615 | return bfd_reloc_ok; |
3616 | } | |
3617 | ||
30667bf3 AM |
3618 | /* Relocate an HPPA ELF section. */ |
3619 | ||
3620 | static boolean | |
3621 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
3622 | contents, relocs, local_syms, local_sections) | |
3623 | bfd *output_bfd; | |
3624 | struct bfd_link_info *info; | |
3625 | bfd *input_bfd; | |
3626 | asection *input_section; | |
3627 | bfd_byte *contents; | |
3628 | Elf_Internal_Rela *relocs; | |
3629 | Elf_Internal_Sym *local_syms; | |
3630 | asection **local_sections; | |
3631 | { | |
30667bf3 | 3632 | bfd_vma *local_got_offsets; |
83c81bfe | 3633 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
3634 | Elf_Internal_Shdr *symtab_hdr; |
3635 | Elf_Internal_Rela *rel; | |
3636 | Elf_Internal_Rela *relend; | |
30667bf3 AM |
3637 | |
3638 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3639 | ||
83c81bfe | 3640 | htab = hppa_link_hash_table (info); |
74d1c347 | 3641 | local_got_offsets = elf_local_got_offsets (input_bfd); |
30667bf3 AM |
3642 | |
3643 | rel = relocs; | |
3644 | relend = relocs + input_section->reloc_count; | |
3645 | for (; rel < relend; rel++) | |
3646 | { | |
3647 | unsigned int r_type; | |
3648 | reloc_howto_type *howto; | |
3649 | unsigned int r_symndx; | |
3650 | struct elf32_hppa_link_hash_entry *h; | |
3651 | Elf_Internal_Sym *sym; | |
3652 | asection *sym_sec; | |
3653 | bfd_vma relocation; | |
3654 | bfd_reloc_status_type r; | |
3655 | const char *sym_name; | |
74d1c347 | 3656 | boolean plabel; |
f09ebc7d | 3657 | boolean warned_undef; |
30667bf3 AM |
3658 | |
3659 | r_type = ELF32_R_TYPE (rel->r_info); | |
3660 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) | |
3661 | { | |
3662 | bfd_set_error (bfd_error_bad_value); | |
3663 | return false; | |
3664 | } | |
3665 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY | |
3666 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) | |
3667 | continue; | |
3668 | ||
3669 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3670 | ||
3671 | if (info->relocateable) | |
3672 | { | |
3ac8354b | 3673 | /* This is a relocatable link. We don't have to change |
30667bf3 AM |
3674 | anything, unless the reloc is against a section symbol, |
3675 | in which case we have to adjust according to where the | |
3676 | section symbol winds up in the output section. */ | |
3677 | if (r_symndx < symtab_hdr->sh_info) | |
3678 | { | |
3679 | sym = local_syms + r_symndx; | |
3680 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3681 | { | |
3682 | sym_sec = local_sections[r_symndx]; | |
3683 | rel->r_addend += sym_sec->output_offset; | |
3684 | } | |
3685 | } | |
3686 | continue; | |
3687 | } | |
3688 | ||
3689 | /* This is a final link. */ | |
3690 | h = NULL; | |
3691 | sym = NULL; | |
3692 | sym_sec = NULL; | |
f09ebc7d | 3693 | warned_undef = false; |
30667bf3 AM |
3694 | if (r_symndx < symtab_hdr->sh_info) |
3695 | { | |
3696 | /* This is a local symbol, h defaults to NULL. */ | |
3697 | sym = local_syms + r_symndx; | |
3698 | sym_sec = local_sections[r_symndx]; | |
f8df10f4 | 3699 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sym_sec, rel); |
30667bf3 AM |
3700 | } |
3701 | else | |
3702 | { | |
3703 | int indx; | |
3704 | ||
3705 | /* It's a global; Find its entry in the link hash. */ | |
3706 | indx = r_symndx - symtab_hdr->sh_info; | |
3707 | h = ((struct elf32_hppa_link_hash_entry *) | |
3708 | elf_sym_hashes (input_bfd)[indx]); | |
3709 | while (h->elf.root.type == bfd_link_hash_indirect | |
3710 | || h->elf.root.type == bfd_link_hash_warning) | |
3711 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; | |
3712 | ||
3713 | relocation = 0; | |
3714 | if (h->elf.root.type == bfd_link_hash_defined | |
3715 | || h->elf.root.type == bfd_link_hash_defweak) | |
3716 | { | |
3717 | sym_sec = h->elf.root.u.def.section; | |
3718 | /* If sym_sec->output_section is NULL, then it's a | |
3719 | symbol defined in a shared library. */ | |
3720 | if (sym_sec->output_section != NULL) | |
3721 | relocation = (h->elf.root.u.def.value | |
3722 | + sym_sec->output_offset | |
3723 | + sym_sec->output_section->vma); | |
3724 | } | |
3725 | else if (h->elf.root.type == bfd_link_hash_undefweak) | |
3726 | ; | |
3727 | else if (info->shared && !info->no_undefined | |
49e9d0d3 AM |
3728 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
3729 | && h->elf.type != STT_PARISC_MILLI) | |
30667bf3 | 3730 | { |
671bae9c | 3731 | if (info->symbolic && !info->allow_shlib_undefined) |
f09ebc7d AM |
3732 | { |
3733 | if (!((*info->callbacks->undefined_symbol) | |
3734 | (info, h->elf.root.root.string, input_bfd, | |
3735 | input_section, rel->r_offset, false))) | |
3736 | return false; | |
3737 | warned_undef = true; | |
3738 | } | |
30667bf3 AM |
3739 | } |
3740 | else | |
3741 | { | |
3742 | if (!((*info->callbacks->undefined_symbol) | |
3743 | (info, h->elf.root.root.string, input_bfd, | |
3744 | input_section, rel->r_offset, true))) | |
3745 | return false; | |
f09ebc7d | 3746 | warned_undef = true; |
30667bf3 AM |
3747 | } |
3748 | } | |
3749 | ||
3750 | /* Do any required modifications to the relocation value, and | |
25f72752 AM |
3751 | determine what types of dynamic info we need to output, if |
3752 | any. */ | |
74d1c347 | 3753 | plabel = 0; |
30667bf3 AM |
3754 | switch (r_type) |
3755 | { | |
3756 | case R_PARISC_DLTIND14F: | |
3757 | case R_PARISC_DLTIND14R: | |
3758 | case R_PARISC_DLTIND21L: | |
ce757d15 AM |
3759 | { |
3760 | bfd_vma off; | |
3761 | boolean do_got = 0; | |
3762 | ||
3763 | /* Relocation is to the entry for this symbol in the | |
3764 | global offset table. */ | |
3765 | if (h != NULL) | |
3766 | { | |
3767 | boolean dyn; | |
3768 | ||
3769 | off = h->elf.got.offset; | |
3770 | dyn = htab->elf.dynamic_sections_created; | |
3771 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf)) | |
3772 | { | |
3773 | /* If we aren't going to call finish_dynamic_symbol, | |
3774 | then we need to handle initialisation of the .got | |
3775 | entry and create needed relocs here. Since the | |
3776 | offset must always be a multiple of 4, we use the | |
3777 | least significant bit to record whether we have | |
3778 | initialised it already. */ | |
3779 | if ((off & 1) != 0) | |
3780 | off &= ~1; | |
3781 | else | |
3782 | { | |
3783 | h->elf.got.offset |= 1; | |
3784 | do_got = 1; | |
3785 | } | |
3786 | } | |
3787 | } | |
3788 | else | |
3789 | { | |
3790 | /* Local symbol case. */ | |
3791 | if (local_got_offsets == NULL) | |
3792 | abort (); | |
3793 | ||
3794 | off = local_got_offsets[r_symndx]; | |
3795 | ||
3796 | /* The offset must always be a multiple of 4. We use | |
3797 | the least significant bit to record whether we have | |
3798 | already generated the necessary reloc. */ | |
3799 | if ((off & 1) != 0) | |
3800 | off &= ~1; | |
3801 | else | |
3802 | { | |
3803 | local_got_offsets[r_symndx] |= 1; | |
3804 | do_got = 1; | |
3805 | } | |
3806 | } | |
68fb2e56 | 3807 | |
ce757d15 AM |
3808 | if (do_got) |
3809 | { | |
3810 | if (info->shared) | |
3811 | { | |
3812 | /* Output a dynamic relocation for this GOT entry. | |
3813 | In this case it is relative to the base of the | |
3814 | object because the symbol index is zero. */ | |
3815 | Elf_Internal_Rela outrel; | |
3816 | asection *srelgot = htab->srelgot; | |
3817 | Elf32_External_Rela *loc; | |
3818 | ||
3819 | outrel.r_offset = (off | |
3820 | + htab->sgot->output_offset | |
3821 | + htab->sgot->output_section->vma); | |
3822 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); | |
3823 | outrel.r_addend = relocation; | |
3824 | loc = (Elf32_External_Rela *) srelgot->contents; | |
3825 | loc += srelgot->reloc_count++; | |
3826 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3827 | } | |
3828 | else | |
30667bf3 | 3829 | bfd_put_32 (output_bfd, relocation, |
83c81bfe | 3830 | htab->sgot->contents + off); |
ce757d15 | 3831 | } |
30667bf3 | 3832 | |
ce757d15 AM |
3833 | if (off >= (bfd_vma) -2) |
3834 | abort (); | |
30667bf3 | 3835 | |
ce757d15 AM |
3836 | /* Add the base of the GOT to the relocation value. */ |
3837 | relocation = (off | |
3838 | + htab->sgot->output_offset | |
3839 | + htab->sgot->output_section->vma); | |
3840 | } | |
30667bf3 | 3841 | break; |
252b5132 | 3842 | |
c46b7515 AM |
3843 | case R_PARISC_SEGREL32: |
3844 | /* If this is the first SEGREL relocation, then initialize | |
3845 | the segment base values. */ | |
83c81bfe AM |
3846 | if (htab->text_segment_base == (bfd_vma) -1) |
3847 | bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab); | |
c46b7515 AM |
3848 | break; |
3849 | ||
30667bf3 AM |
3850 | case R_PARISC_PLABEL14R: |
3851 | case R_PARISC_PLABEL21L: | |
3852 | case R_PARISC_PLABEL32: | |
ebe50bae | 3853 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3854 | { |
ce757d15 AM |
3855 | bfd_vma off; |
3856 | boolean do_plt = 0; | |
3857 | ||
74d1c347 AM |
3858 | /* If we have a global symbol with a PLT slot, then |
3859 | redirect this relocation to it. */ | |
3860 | if (h != NULL) | |
3861 | { | |
3862 | off = h->elf.plt.offset; | |
4dc86686 | 3863 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf)) |
8dea1268 AM |
3864 | { |
3865 | /* In a non-shared link, adjust_dynamic_symbols | |
3866 | isn't called for symbols forced local. We | |
dc810e39 | 3867 | need to write out the plt entry here. */ |
8dea1268 AM |
3868 | if ((off & 1) != 0) |
3869 | off &= ~1; | |
3870 | else | |
3871 | { | |
8dea1268 | 3872 | h->elf.plt.offset |= 1; |
ce757d15 | 3873 | do_plt = 1; |
8dea1268 AM |
3874 | } |
3875 | } | |
74d1c347 AM |
3876 | } |
3877 | else | |
3878 | { | |
68fb2e56 AM |
3879 | bfd_vma *local_plt_offsets; |
3880 | ||
3881 | if (local_got_offsets == NULL) | |
3882 | abort (); | |
74d1c347 | 3883 | |
68fb2e56 AM |
3884 | local_plt_offsets = local_got_offsets + symtab_hdr->sh_info; |
3885 | off = local_plt_offsets[r_symndx]; | |
74d1c347 AM |
3886 | |
3887 | /* As for the local .got entry case, we use the last | |
3888 | bit to record whether we've already initialised | |
3889 | this local .plt entry. */ | |
3890 | if ((off & 1) != 0) | |
3891 | off &= ~1; | |
ce757d15 AM |
3892 | else |
3893 | { | |
3894 | local_plt_offsets[r_symndx] |= 1; | |
3895 | do_plt = 1; | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | if (do_plt) | |
3900 | { | |
3901 | if (info->shared) | |
3902 | { | |
3903 | /* Output a dynamic IPLT relocation for this | |
3904 | PLT entry. */ | |
3905 | Elf_Internal_Rela outrel; | |
3906 | asection *srelplt = htab->srelplt; | |
3907 | Elf32_External_Rela *loc; | |
3908 | ||
3909 | outrel.r_offset = (off | |
3910 | + htab->splt->output_offset | |
3911 | + htab->splt->output_section->vma); | |
3912 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
3913 | outrel.r_addend = relocation; | |
3914 | loc = (Elf32_External_Rela *) srelplt->contents; | |
3915 | loc += srelplt->reloc_count++; | |
3916 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3917 | } | |
74d1c347 AM |
3918 | else |
3919 | { | |
3920 | bfd_put_32 (output_bfd, | |
3921 | relocation, | |
83c81bfe | 3922 | htab->splt->contents + off); |
74d1c347 | 3923 | bfd_put_32 (output_bfd, |
83c81bfe AM |
3924 | elf_gp (htab->splt->output_section->owner), |
3925 | htab->splt->contents + off + 4); | |
74d1c347 AM |
3926 | } |
3927 | } | |
3928 | ||
68fb2e56 | 3929 | if (off >= (bfd_vma) -2) |
49e9d0d3 | 3930 | abort (); |
74d1c347 AM |
3931 | |
3932 | /* PLABELs contain function pointers. Relocation is to | |
3933 | the entry for the function in the .plt. The magic +2 | |
3934 | offset signals to $$dyncall that the function pointer | |
3935 | is in the .plt and thus has a gp pointer too. | |
3936 | Exception: Undefined PLABELs should have a value of | |
3937 | zero. */ | |
3938 | if (h == NULL | |
3939 | || (h->elf.root.type != bfd_link_hash_undefweak | |
3940 | && h->elf.root.type != bfd_link_hash_undefined)) | |
3941 | { | |
3942 | relocation = (off | |
83c81bfe AM |
3943 | + htab->splt->output_offset |
3944 | + htab->splt->output_section->vma | |
74d1c347 AM |
3945 | + 2); |
3946 | } | |
3947 | plabel = 1; | |
30667bf3 AM |
3948 | } |
3949 | /* Fall through and possibly emit a dynamic relocation. */ | |
3950 | ||
3951 | case R_PARISC_DIR17F: | |
3952 | case R_PARISC_DIR17R: | |
47d89dba | 3953 | case R_PARISC_DIR14F: |
30667bf3 AM |
3954 | case R_PARISC_DIR14R: |
3955 | case R_PARISC_DIR21L: | |
3956 | case R_PARISC_DPREL14F: | |
3957 | case R_PARISC_DPREL14R: | |
3958 | case R_PARISC_DPREL21L: | |
3959 | case R_PARISC_DIR32: | |
ec338859 AM |
3960 | /* r_symndx will be zero only for relocs against symbols |
3961 | from removed linkonce sections, or sections discarded by | |
3962 | a linker script. */ | |
3963 | if (r_symndx == 0 | |
3964 | || (input_section->flags & SEC_ALLOC) == 0) | |
3965 | break; | |
3966 | ||
30667bf3 | 3967 | /* The reloc types handled here and this conditional |
56882138 | 3968 | expression must match the code in ..check_relocs and |
ec338859 | 3969 | allocate_dynrelocs. ie. We need exactly the same condition |
56882138 AM |
3970 | as in ..check_relocs, with some extra conditions (dynindx |
3971 | test in this case) to cater for relocs removed by | |
ec338859 | 3972 | allocate_dynrelocs. If you squint, the non-shared test |
56882138 AM |
3973 | here does indeed match the one in ..check_relocs, the |
3974 | difference being that here we test DEF_DYNAMIC as well as | |
3975 | !DEF_REGULAR. All common syms end up with !DEF_REGULAR, | |
3976 | which is why we can't use just that test here. | |
3977 | Conversely, DEF_DYNAMIC can't be used in check_relocs as | |
3978 | there all files have not been loaded. */ | |
446f2863 | 3979 | if ((info->shared |
446f2863 AM |
3980 | && (IS_ABSOLUTE_RELOC (r_type) |
3981 | || (h != NULL | |
3982 | && h->elf.dynindx != -1 | |
3983 | && (!info->symbolic | |
3984 | || (h->elf.elf_link_hash_flags | |
3985 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
3986 | || (!info->shared | |
446f2863 AM |
3987 | && h != NULL |
3988 | && h->elf.dynindx != -1 | |
3989 | && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
3990 | && (((h->elf.elf_link_hash_flags |
3991 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3992 | && (h->elf.elf_link_hash_flags | |
3993 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
446f2863 AM |
3994 | || h->elf.root.type == bfd_link_hash_undefweak |
3995 | || h->elf.root.type == bfd_link_hash_undefined))) | |
30667bf3 AM |
3996 | { |
3997 | Elf_Internal_Rela outrel; | |
3998 | boolean skip; | |
98ceb8ce AM |
3999 | asection *sreloc; |
4000 | Elf32_External_Rela *loc; | |
252b5132 | 4001 | |
30667bf3 AM |
4002 | /* When generating a shared object, these relocations |
4003 | are copied into the output file to be resolved at run | |
4004 | time. */ | |
252b5132 | 4005 | |
30667bf3 | 4006 | outrel.r_addend = rel->r_addend; |
c629eae0 JJ |
4007 | outrel.r_offset = |
4008 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4009 | rel->r_offset); | |
0bb2d96a JJ |
4010 | skip = (outrel.r_offset == (bfd_vma) -1 |
4011 | || outrel.r_offset == (bfd_vma) -2); | |
30667bf3 AM |
4012 | outrel.r_offset += (input_section->output_offset |
4013 | + input_section->output_section->vma); | |
4014 | ||
4015 | if (skip) | |
252b5132 | 4016 | { |
30667bf3 | 4017 | memset (&outrel, 0, sizeof (outrel)); |
252b5132 | 4018 | } |
74d1c347 AM |
4019 | else if (h != NULL |
4020 | && h->elf.dynindx != -1 | |
4021 | && (plabel | |
446f2863 AM |
4022 | || !IS_ABSOLUTE_RELOC (r_type) |
4023 | || !info->shared | |
74d1c347 | 4024 | || !info->symbolic |
30667bf3 AM |
4025 | || (h->elf.elf_link_hash_flags |
4026 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
252b5132 | 4027 | { |
30667bf3 AM |
4028 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); |
4029 | } | |
4030 | else /* It's a local symbol, or one marked to become local. */ | |
4031 | { | |
4032 | int indx = 0; | |
edd21aca | 4033 | |
30667bf3 AM |
4034 | /* Add the absolute offset of the symbol. */ |
4035 | outrel.r_addend += relocation; | |
edd21aca | 4036 | |
74d1c347 AM |
4037 | /* Global plabels need to be processed by the |
4038 | dynamic linker so that functions have at most one | |
4039 | fptr. For this reason, we need to differentiate | |
4040 | between global and local plabels, which we do by | |
4041 | providing the function symbol for a global plabel | |
4042 | reloc, and no symbol for local plabels. */ | |
4043 | if (! plabel | |
4044 | && sym_sec != NULL | |
30667bf3 AM |
4045 | && sym_sec->output_section != NULL |
4046 | && ! bfd_is_abs_section (sym_sec)) | |
252b5132 | 4047 | { |
30667bf3 AM |
4048 | indx = elf_section_data (sym_sec->output_section)->dynindx; |
4049 | /* We are turning this relocation into one | |
4050 | against a section symbol, so subtract out the | |
4051 | output section's address but not the offset | |
4052 | of the input section in the output section. */ | |
4053 | outrel.r_addend -= sym_sec->output_section->vma; | |
252b5132 | 4054 | } |
252b5132 | 4055 | |
30667bf3 AM |
4056 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
4057 | } | |
68fb2e56 AM |
4058 | #if 0 |
4059 | /* EH info can cause unaligned DIR32 relocs. | |
4060 | Tweak the reloc type for the dynamic linker. */ | |
4061 | if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0) | |
4062 | outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info), | |
4063 | R_PARISC_DIR32U); | |
4064 | #endif | |
98ceb8ce AM |
4065 | sreloc = elf_section_data (input_section)->sreloc; |
4066 | if (sreloc == NULL) | |
4067 | abort (); | |
4068 | ||
3ac8354b AM |
4069 | loc = (Elf32_External_Rela *) sreloc->contents; |
4070 | loc += sreloc->reloc_count++; | |
98ceb8ce | 4071 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
30667bf3 AM |
4072 | } |
4073 | break; | |
edd21aca | 4074 | |
30667bf3 AM |
4075 | default: |
4076 | break; | |
4077 | } | |
252b5132 | 4078 | |
30667bf3 | 4079 | r = final_link_relocate (input_section, contents, rel, relocation, |
83c81bfe | 4080 | htab, sym_sec, h); |
252b5132 | 4081 | |
30667bf3 AM |
4082 | if (r == bfd_reloc_ok) |
4083 | continue; | |
252b5132 | 4084 | |
30667bf3 AM |
4085 | if (h != NULL) |
4086 | sym_name = h->elf.root.root.string; | |
4087 | else | |
4088 | { | |
4089 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
4090 | symtab_hdr->sh_link, | |
4091 | sym->st_name); | |
4092 | if (sym_name == NULL) | |
4093 | return false; | |
4094 | if (*sym_name == '\0') | |
4095 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
4096 | } | |
edd21aca | 4097 | |
30667bf3 | 4098 | howto = elf_hppa_howto_table + r_type; |
252b5132 | 4099 | |
30667bf3 AM |
4100 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported) |
4101 | { | |
f09ebc7d AM |
4102 | if (r == bfd_reloc_notsupported || !warned_undef) |
4103 | { | |
4104 | (*_bfd_error_handler) | |
4105 | (_("%s(%s+0x%lx): cannot handle %s for %s"), | |
4106 | bfd_archive_filename (input_bfd), | |
4107 | input_section->name, | |
4108 | (long) rel->r_offset, | |
4109 | howto->name, | |
4110 | sym_name); | |
4111 | bfd_set_error (bfd_error_bad_value); | |
4112 | return false; | |
4113 | } | |
30667bf3 AM |
4114 | } |
4115 | else | |
4116 | { | |
4117 | if (!((*info->callbacks->reloc_overflow) | |
4118 | (info, sym_name, howto->name, (bfd_vma) 0, | |
4119 | input_bfd, input_section, rel->r_offset))) | |
4120 | return false; | |
4121 | } | |
4122 | } | |
edd21aca | 4123 | |
30667bf3 AM |
4124 | return true; |
4125 | } | |
252b5132 | 4126 | |
c46b7515 AM |
4127 | /* Comparison function for qsort to sort unwind section during a |
4128 | final link. */ | |
4129 | ||
4130 | static int | |
4131 | hppa_unwind_entry_compare (a, b) | |
4132 | const PTR a; | |
4133 | const PTR b; | |
4134 | { | |
4135 | const bfd_byte *ap, *bp; | |
4136 | unsigned long av, bv; | |
4137 | ||
4138 | ap = (const bfd_byte *) a; | |
4139 | av = (unsigned long) ap[0] << 24; | |
4140 | av |= (unsigned long) ap[1] << 16; | |
4141 | av |= (unsigned long) ap[2] << 8; | |
4142 | av |= (unsigned long) ap[3]; | |
4143 | ||
4144 | bp = (const bfd_byte *) b; | |
4145 | bv = (unsigned long) bp[0] << 24; | |
4146 | bv |= (unsigned long) bp[1] << 16; | |
4147 | bv |= (unsigned long) bp[2] << 8; | |
4148 | bv |= (unsigned long) bp[3]; | |
4149 | ||
4150 | return av < bv ? -1 : av > bv ? 1 : 0; | |
4151 | } | |
4152 | ||
30667bf3 AM |
4153 | /* Finish up dynamic symbol handling. We set the contents of various |
4154 | dynamic sections here. */ | |
252b5132 | 4155 | |
30667bf3 AM |
4156 | static boolean |
4157 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4158 | bfd *output_bfd; | |
4159 | struct bfd_link_info *info; | |
4160 | struct elf_link_hash_entry *h; | |
4161 | Elf_Internal_Sym *sym; | |
4162 | { | |
83c81bfe | 4163 | struct elf32_hppa_link_hash_table *htab; |
edd21aca | 4164 | |
83c81bfe | 4165 | htab = hppa_link_hash_table (info); |
30667bf3 | 4166 | |
30667bf3 AM |
4167 | if (h->plt.offset != (bfd_vma) -1) |
4168 | { | |
4169 | bfd_vma value; | |
30667bf3 | 4170 | |
8dea1268 AM |
4171 | if (h->plt.offset & 1) |
4172 | abort (); | |
4173 | ||
30667bf3 AM |
4174 | /* This symbol has an entry in the procedure linkage table. Set |
4175 | it up. | |
4176 | ||
4177 | The format of a plt entry is | |
74d1c347 AM |
4178 | <funcaddr> |
4179 | <__gp> | |
47d89dba | 4180 | */ |
30667bf3 AM |
4181 | value = 0; |
4182 | if (h->root.type == bfd_link_hash_defined | |
4183 | || h->root.type == bfd_link_hash_defweak) | |
4184 | { | |
4185 | value = h->root.u.def.value; | |
4186 | if (h->root.u.def.section->output_section != NULL) | |
4187 | value += (h->root.u.def.section->output_offset | |
4188 | + h->root.u.def.section->output_section->vma); | |
252b5132 | 4189 | } |
edd21aca | 4190 | |
74d1c347 | 4191 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) |
30667bf3 | 4192 | { |
47d89dba | 4193 | Elf_Internal_Rela rel; |
3ac8354b | 4194 | Elf32_External_Rela *loc; |
47d89dba | 4195 | |
30667bf3 AM |
4196 | /* Create a dynamic IPLT relocation for this entry. */ |
4197 | rel.r_offset = (h->plt.offset | |
83c81bfe AM |
4198 | + htab->splt->output_offset |
4199 | + htab->splt->output_section->vma); | |
ce757d15 | 4200 | if (h->dynindx != -1) |
74d1c347 AM |
4201 | { |
4202 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); | |
4203 | rel.r_addend = 0; | |
4204 | } | |
4205 | else | |
4206 | { | |
4207 | /* This symbol has been marked to become local, and is | |
4208 | used by a plabel so must be kept in the .plt. */ | |
4209 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); | |
4210 | rel.r_addend = value; | |
4211 | } | |
30667bf3 | 4212 | |
3ac8354b AM |
4213 | loc = (Elf32_External_Rela *) htab->srelplt->contents; |
4214 | loc += htab->srelplt->reloc_count++; | |
83c81bfe | 4215 | bfd_elf32_swap_reloca_out (htab->splt->output_section->owner, |
3ac8354b | 4216 | &rel, loc); |
30667bf3 | 4217 | } |
ce757d15 | 4218 | else |
47d89dba | 4219 | { |
ce757d15 AM |
4220 | bfd_put_32 (htab->splt->owner, |
4221 | value, | |
4222 | htab->splt->contents + h->plt.offset); | |
4223 | bfd_put_32 (htab->splt->owner, | |
4224 | elf_gp (htab->splt->output_section->owner), | |
4225 | htab->splt->contents + h->plt.offset + 4); | |
47d89dba AM |
4226 | } |
4227 | ||
30667bf3 AM |
4228 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
4229 | { | |
4230 | /* Mark the symbol as undefined, rather than as defined in | |
4231 | the .plt section. Leave the value alone. */ | |
4232 | sym->st_shndx = SHN_UNDEF; | |
4233 | } | |
4234 | } | |
edd21aca | 4235 | |
30667bf3 AM |
4236 | if (h->got.offset != (bfd_vma) -1) |
4237 | { | |
4238 | Elf_Internal_Rela rel; | |
3ac8354b | 4239 | Elf32_External_Rela *loc; |
30667bf3 AM |
4240 | |
4241 | /* This symbol has an entry in the global offset table. Set it | |
4242 | up. */ | |
4243 | ||
4244 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) | |
83c81bfe AM |
4245 | + htab->sgot->output_offset |
4246 | + htab->sgot->output_section->vma); | |
30667bf3 | 4247 | |
4dc86686 AM |
4248 | /* If this is a -Bsymbolic link and the symbol is defined |
4249 | locally or was forced to be local because of a version file, | |
4250 | we just want to emit a RELATIVE reloc. The entry in the | |
4251 | global offset table will already have been initialized in the | |
4252 | relocate_section function. */ | |
4253 | if (info->shared | |
4254 | && (info->symbolic || h->dynindx == -1) | |
4255 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
30667bf3 | 4256 | { |
74d1c347 | 4257 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); |
30667bf3 AM |
4258 | rel.r_addend = (h->root.u.def.value |
4259 | + h->root.u.def.section->output_offset | |
4260 | + h->root.u.def.section->output_section->vma); | |
4261 | } | |
4262 | else | |
4263 | { | |
49e9d0d3 AM |
4264 | if ((h->got.offset & 1) != 0) |
4265 | abort (); | |
30667bf3 | 4266 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
83c81bfe | 4267 | htab->sgot->contents + h->got.offset); |
30667bf3 AM |
4268 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); |
4269 | rel.r_addend = 0; | |
4270 | } | |
edd21aca | 4271 | |
3ac8354b AM |
4272 | loc = (Elf32_External_Rela *) htab->srelgot->contents; |
4273 | loc += htab->srelgot->reloc_count++; | |
4274 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
30667bf3 | 4275 | } |
edd21aca | 4276 | |
30667bf3 AM |
4277 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
4278 | { | |
4279 | asection *s; | |
4280 | Elf_Internal_Rela rel; | |
3ac8354b | 4281 | Elf32_External_Rela *loc; |
30667bf3 AM |
4282 | |
4283 | /* This symbol needs a copy reloc. Set it up. */ | |
4284 | ||
49e9d0d3 AM |
4285 | if (! (h->dynindx != -1 |
4286 | && (h->root.type == bfd_link_hash_defined | |
4287 | || h->root.type == bfd_link_hash_defweak))) | |
4288 | abort (); | |
30667bf3 | 4289 | |
83c81bfe | 4290 | s = htab->srelbss; |
30667bf3 AM |
4291 | |
4292 | rel.r_offset = (h->root.u.def.value | |
4293 | + h->root.u.def.section->output_offset | |
4294 | + h->root.u.def.section->output_section->vma); | |
4295 | rel.r_addend = 0; | |
4296 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); | |
3ac8354b AM |
4297 | loc = (Elf32_External_Rela *) s->contents + s->reloc_count++; |
4298 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
30667bf3 AM |
4299 | } |
4300 | ||
4301 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4302 | if (h->root.root.string[0] == '_' | |
4303 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4304 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) | |
4305 | { | |
4306 | sym->st_shndx = SHN_ABS; | |
4307 | } | |
4308 | ||
4309 | return true; | |
4310 | } | |
4311 | ||
98ceb8ce AM |
4312 | /* Used to decide how to sort relocs in an optimal manner for the |
4313 | dynamic linker, before writing them out. */ | |
4314 | ||
4315 | static enum elf_reloc_type_class | |
4316 | elf32_hppa_reloc_type_class (rela) | |
4317 | const Elf_Internal_Rela *rela; | |
4318 | { | |
4319 | if (ELF32_R_SYM (rela->r_info) == 0) | |
4320 | return reloc_class_relative; | |
4321 | ||
4322 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
4323 | { | |
4324 | case R_PARISC_IPLT: | |
4325 | return reloc_class_plt; | |
4326 | case R_PARISC_COPY: | |
4327 | return reloc_class_copy; | |
4328 | default: | |
4329 | return reloc_class_normal; | |
4330 | } | |
4331 | } | |
4332 | ||
30667bf3 AM |
4333 | /* Finish up the dynamic sections. */ |
4334 | ||
4335 | static boolean | |
4336 | elf32_hppa_finish_dynamic_sections (output_bfd, info) | |
4337 | bfd *output_bfd; | |
4338 | struct bfd_link_info *info; | |
4339 | { | |
4340 | bfd *dynobj; | |
83c81bfe | 4341 | struct elf32_hppa_link_hash_table *htab; |
30667bf3 AM |
4342 | asection *sdyn; |
4343 | ||
83c81bfe | 4344 | htab = hppa_link_hash_table (info); |
ebe50bae | 4345 | dynobj = htab->elf.dynobj; |
30667bf3 AM |
4346 | |
4347 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4348 | ||
ebe50bae | 4349 | if (htab->elf.dynamic_sections_created) |
30667bf3 AM |
4350 | { |
4351 | Elf32_External_Dyn *dyncon, *dynconend; | |
4352 | ||
49e9d0d3 AM |
4353 | if (sdyn == NULL) |
4354 | abort (); | |
30667bf3 AM |
4355 | |
4356 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4357 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4358 | for (; dyncon < dynconend; dyncon++) | |
edd21aca | 4359 | { |
30667bf3 AM |
4360 | Elf_Internal_Dyn dyn; |
4361 | asection *s; | |
4362 | ||
4363 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4364 | ||
4365 | switch (dyn.d_tag) | |
4366 | { | |
4367 | default: | |
3ac8354b | 4368 | continue; |
30667bf3 AM |
4369 | |
4370 | case DT_PLTGOT: | |
4371 | /* Use PLTGOT to set the GOT register. */ | |
4372 | dyn.d_un.d_ptr = elf_gp (output_bfd); | |
30667bf3 AM |
4373 | break; |
4374 | ||
4375 | case DT_JMPREL: | |
83c81bfe | 4376 | s = htab->srelplt; |
30667bf3 | 4377 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
30667bf3 AM |
4378 | break; |
4379 | ||
4380 | case DT_PLTRELSZ: | |
83c81bfe | 4381 | s = htab->srelplt; |
30667bf3 AM |
4382 | if (s->_cooked_size != 0) |
4383 | dyn.d_un.d_val = s->_cooked_size; | |
4384 | else | |
4385 | dyn.d_un.d_val = s->_raw_size; | |
30667bf3 | 4386 | break; |
4e12ff7f AM |
4387 | |
4388 | case DT_RELASZ: | |
4389 | /* Don't count procedure linkage table relocs in the | |
4390 | overall reloc count. */ | |
4391 | if (htab->srelplt != NULL) | |
4392 | { | |
4393 | s = htab->srelplt->output_section; | |
4394 | if (s->_cooked_size != 0) | |
4395 | dyn.d_un.d_val -= s->_cooked_size; | |
4396 | else | |
4397 | dyn.d_un.d_val -= s->_raw_size; | |
4398 | } | |
4399 | break; | |
30667bf3 | 4400 | } |
3ac8354b AM |
4401 | |
4402 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
edd21aca | 4403 | } |
252b5132 | 4404 | } |
edd21aca | 4405 | |
83c81bfe | 4406 | if (htab->sgot != NULL && htab->sgot->_raw_size != 0) |
30667bf3 | 4407 | { |
74d1c347 AM |
4408 | /* Fill in the first entry in the global offset table. |
4409 | We use it to point to our dynamic section, if we have one. */ | |
30667bf3 AM |
4410 | bfd_put_32 (output_bfd, |
4411 | (sdyn != NULL | |
4412 | ? sdyn->output_section->vma + sdyn->output_offset | |
4413 | : (bfd_vma) 0), | |
83c81bfe | 4414 | htab->sgot->contents); |
30667bf3 | 4415 | |
74d1c347 | 4416 | /* The second entry is reserved for use by the dynamic linker. */ |
83c81bfe | 4417 | memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE); |
74d1c347 | 4418 | |
30667bf3 | 4419 | /* Set .got entry size. */ |
83c81bfe | 4420 | elf_section_data (htab->sgot->output_section) |
74d1c347 | 4421 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE; |
30667bf3 AM |
4422 | } |
4423 | ||
83c81bfe | 4424 | if (htab->splt != NULL && htab->splt->_raw_size != 0) |
47d89dba AM |
4425 | { |
4426 | /* Set plt entry size. */ | |
83c81bfe | 4427 | elf_section_data (htab->splt->output_section) |
47d89dba AM |
4428 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; |
4429 | ||
83c81bfe | 4430 | if (htab->need_plt_stub) |
47d89dba AM |
4431 | { |
4432 | /* Set up the .plt stub. */ | |
83c81bfe AM |
4433 | memcpy (htab->splt->contents |
4434 | + htab->splt->_raw_size - sizeof (plt_stub), | |
47d89dba AM |
4435 | plt_stub, sizeof (plt_stub)); |
4436 | ||
83c81bfe AM |
4437 | if ((htab->splt->output_offset |
4438 | + htab->splt->output_section->vma | |
4439 | + htab->splt->_raw_size) | |
4440 | != (htab->sgot->output_offset | |
4441 | + htab->sgot->output_section->vma)) | |
47d89dba AM |
4442 | { |
4443 | (*_bfd_error_handler) | |
4444 | (_(".got section not immediately after .plt section")); | |
4445 | return false; | |
4446 | } | |
4447 | } | |
4448 | } | |
30667bf3 | 4449 | |
252b5132 | 4450 | return true; |
30667bf3 | 4451 | } |
252b5132 | 4452 | |
d952f17a AM |
4453 | /* Tweak the OSABI field of the elf header. */ |
4454 | ||
4455 | static void | |
4456 | elf32_hppa_post_process_headers (abfd, link_info) | |
4457 | bfd *abfd; | |
4458 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
4459 | { | |
4460 | Elf_Internal_Ehdr * i_ehdrp; | |
4461 | ||
4462 | i_ehdrp = elf_elfheader (abfd); | |
4463 | ||
4464 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) | |
4465 | { | |
4466 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
4467 | } | |
4468 | else | |
4469 | { | |
4470 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX; | |
4471 | } | |
4472 | } | |
4473 | ||
30667bf3 AM |
4474 | /* Called when writing out an object file to decide the type of a |
4475 | symbol. */ | |
4476 | static int | |
4477 | elf32_hppa_elf_get_symbol_type (elf_sym, type) | |
4478 | Elf_Internal_Sym *elf_sym; | |
4479 | int type; | |
4480 | { | |
4481 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) | |
4482 | return STT_PARISC_MILLI; | |
4483 | else | |
4484 | return type; | |
252b5132 RH |
4485 | } |
4486 | ||
4487 | /* Misc BFD support code. */ | |
30667bf3 AM |
4488 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name |
4489 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
4490 | #define elf_info_to_howto elf_hppa_info_to_howto | |
4491 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel | |
252b5132 | 4492 | |
252b5132 | 4493 | /* Stuff for the BFD linker. */ |
c46b7515 | 4494 | #define bfd_elf32_bfd_final_link elf32_hppa_final_link |
30667bf3 | 4495 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create |
e2d34d7d | 4496 | #define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free |
30667bf3 AM |
4497 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook |
4498 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol | |
ebe50bae | 4499 | #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol |
30667bf3 AM |
4500 | #define elf_backend_check_relocs elf32_hppa_check_relocs |
4501 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections | |
4502 | #define elf_backend_fake_sections elf_hppa_fake_sections | |
4503 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
74d1c347 | 4504 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol |
30667bf3 AM |
4505 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol |
4506 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections | |
4507 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections | |
4508 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook | |
4509 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook | |
4510 | #define elf_backend_object_p elf32_hppa_object_p | |
4511 | #define elf_backend_final_write_processing elf_hppa_final_write_processing | |
d952f17a | 4512 | #define elf_backend_post_process_headers elf32_hppa_post_process_headers |
30667bf3 | 4513 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type |
98ceb8ce | 4514 | #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class |
30667bf3 AM |
4515 | |
4516 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4517 | #define elf_backend_can_refcount 1 |
30667bf3 AM |
4518 | #define elf_backend_plt_alignment 2 |
4519 | #define elf_backend_want_got_plt 0 | |
4520 | #define elf_backend_plt_readonly 0 | |
4521 | #define elf_backend_want_plt_sym 0 | |
74d1c347 | 4522 | #define elf_backend_got_header_size 8 |
252b5132 RH |
4523 | |
4524 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec | |
4525 | #define TARGET_BIG_NAME "elf32-hppa" | |
4526 | #define ELF_ARCH bfd_arch_hppa | |
4527 | #define ELF_MACHINE_CODE EM_PARISC | |
4528 | #define ELF_MAXPAGESIZE 0x1000 | |
4529 | ||
4530 | #include "elf32-target.h" | |
d952f17a AM |
4531 | |
4532 | #undef TARGET_BIG_SYM | |
4533 | #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec | |
4534 | #undef TARGET_BIG_NAME | |
4535 | #define TARGET_BIG_NAME "elf32-hppa-linux" | |
4536 | ||
4537 | #define INCLUDED_TARGET_FILE 1 | |
4538 | #include "elf32-target.h" |