* Makefile.def (flags_to_pass): Add OBJDUMP_FOR_TARGET.
[deliverable/binutils-gdb.git] / bfd / elf32-hppa.c
CommitLineData
252b5132 1/* BFD back-end for HP PA-RISC ELF files.
e5094212 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
3eb128b2 3 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
252b5132 4
30667bf3 5 Original code by
252b5132
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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 10
ae9a127f 11 This file is part of BFD, the Binary File Descriptor library.
252b5132 12
ae9a127f
NC
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.
252b5132 17
ae9a127f
NC
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.
252b5132 22
ae9a127f
NC
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
3e110533 25 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH
26
27#include "bfd.h"
28#include "sysdep.h"
252b5132
RH
29#include "libbfd.h"
30#include "elf-bfd.h"
9e103c9c
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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
46fe4e66 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
46fe4e66 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
ae9a127f 114 : be,n 0(%sr0,%rp) ; inter-space return. */
30667bf3 115
875c0872
DA
116
117/* Variable names follow a coding style.
118 Please follow this (Apps Hungarian) style:
119
120 Structure/Variable Prefix
121 elf_link_hash_table "etab"
122 elf_link_hash_entry "eh"
123
124 elf32_hppa_link_hash_table "htab"
125 elf32_hppa_link_hash_entry "hh"
126
127 bfd_hash_table "btab"
128 bfd_hash_entry "bh"
129
130 bfd_hash_table containing stubs "bstab"
131 elf32_hppa_stub_hash_entry "hsh"
132
133 elf32_hppa_dyn_reloc_entry "hdh"
134
135 Always remember to use GNU Coding Style. */
136
30667bf3
AM
137#define PLT_ENTRY_SIZE 8
138#define GOT_ENTRY_SIZE 4
139#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
140
47d89dba
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141static const bfd_byte plt_stub[] =
142{
143 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
144 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
145 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
146#define PLT_STUB_ENTRY (3*4)
147 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
148 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
149 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
150 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
151};
152
30667bf3
AM
153/* Section name for stubs is the associated section name plus this
154 string. */
155#define STUB_SUFFIX ".stub"
156
98ceb8ce
AM
157/* We don't need to copy certain PC- or GP-relative dynamic relocs
158 into a shared object's dynamic section. All the relocs of the
159 limited class we are interested in, are absolute. */
160#ifndef RELATIVE_DYNRELOCS
161#define RELATIVE_DYNRELOCS 0
446f2863 162#define IS_ABSOLUTE_RELOC(r_type) 1
30667bf3
AM
163#endif
164
4fc8051d
AM
165/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
166 copying dynamic variables from a shared lib into an app's dynbss
167 section, and instead use a dynamic relocation to point into the
168 shared lib. */
169#define ELIMINATE_COPY_RELOCS 1
170
30667bf3
AM
171enum elf32_hppa_stub_type {
172 hppa_stub_long_branch,
173 hppa_stub_long_branch_shared,
174 hppa_stub_import,
175 hppa_stub_import_shared,
176 hppa_stub_export,
177 hppa_stub_none
178};
179
30667bf3 180struct elf32_hppa_stub_hash_entry {
252b5132 181
edd21aca 182 /* Base hash table entry structure. */
a63e02c7 183 struct bfd_hash_entry bh_root;
252b5132 184
edd21aca
AM
185 /* The stub section. */
186 asection *stub_sec;
187
188 /* Offset within stub_sec of the beginning of this stub. */
30667bf3 189 bfd_vma stub_offset;
252b5132
RH
190
191 /* Given the symbol's value and its section we can determine its final
192 value when building the stubs (so the stub knows where to jump. */
30667bf3 193 bfd_vma target_value;
252b5132 194 asection *target_section;
30667bf3
AM
195
196 enum elf32_hppa_stub_type stub_type;
197
198 /* The symbol table entry, if any, that this was derived from. */
a63e02c7 199 struct elf32_hppa_link_hash_entry *hh;
30667bf3 200
25f72752
AM
201 /* Where this stub is being called from, or, in the case of combined
202 stub sections, the first input section in the group. */
203 asection *id_sec;
252b5132
RH
204};
205
30667bf3
AM
206struct elf32_hppa_link_hash_entry {
207
a63e02c7 208 struct elf_link_hash_entry eh;
30667bf3
AM
209
210 /* A pointer to the most recently used stub hash entry against this
211 symbol. */
a63e02c7 212 struct elf32_hppa_stub_hash_entry *hsh_cache;
30667bf3 213
30667bf3
AM
214 /* Used to count relocations for delayed sizing of relocation
215 sections. */
216 struct elf32_hppa_dyn_reloc_entry {
217
218 /* Next relocation in the chain. */
a63e02c7 219 struct elf32_hppa_dyn_reloc_entry *hdh_next;
30667bf3 220
98ceb8ce
AM
221 /* The input section of the reloc. */
222 asection *sec;
30667bf3
AM
223
224 /* Number of relocs copied in this section. */
225 bfd_size_type count;
98ceb8ce
AM
226
227#if RELATIVE_DYNRELOCS
228 /* Number of relative relocs copied for the input section. */
229 bfd_size_type relative_count;
230#endif
231 } *dyn_relocs;
30667bf3 232
74d1c347
AM
233 /* Set if this symbol is used by a plabel reloc. */
234 unsigned int plabel:1;
30667bf3
AM
235};
236
30667bf3
AM
237struct elf32_hppa_link_hash_table {
238
252b5132 239 /* The main hash table. */
a63e02c7 240 struct elf_link_hash_table etab;
252b5132
RH
241
242 /* The stub hash table. */
a63e02c7 243 struct bfd_hash_table bstab;
252b5132 244
30667bf3
AM
245 /* Linker stub bfd. */
246 bfd *stub_bfd;
247
30667bf3 248 /* Linker call-backs. */
c39a58e6
AM
249 asection * (*add_stub_section) (const char *, asection *);
250 void (*layout_sections_again) (void);
30667bf3 251
25f72752
AM
252 /* Array to keep track of which stub sections have been created, and
253 information on stub grouping. */
254 struct map_stub {
255 /* This is the section to which stubs in the group will be
256 attached. */
257 asection *link_sec;
258 /* The stub section. */
259 asection *stub_sec;
25f72752 260 } *stub_group;
30667bf3 261
b4655ea9
AM
262 /* Assorted information used by elf32_hppa_size_stubs. */
263 unsigned int bfd_count;
264 int top_index;
265 asection **input_list;
266 Elf_Internal_Sym **all_local_syms;
267
30667bf3
AM
268 /* Short-cuts to get to dynamic linker sections. */
269 asection *sgot;
270 asection *srelgot;
271 asection *splt;
272 asection *srelplt;
273 asection *sdynbss;
274 asection *srelbss;
47d89dba 275
c46b7515
AM
276 /* Used during a final link to store the base of the text and data
277 segments so that we can perform SEGREL relocations. */
278 bfd_vma text_segment_base;
279 bfd_vma data_segment_base;
280
47d89dba
AM
281 /* Whether we support multiple sub-spaces for shared libs. */
282 unsigned int multi_subspace:1;
283
067fa4a6 284 /* Flags set when various size branches are detected. Used to
47d89dba
AM
285 select suitable defaults for the stub group size. */
286 unsigned int has_12bit_branch:1;
287 unsigned int has_17bit_branch:1;
067fa4a6 288 unsigned int has_22bit_branch:1;
47d89dba
AM
289
290 /* Set if we need a .plt stub to support lazy dynamic linking. */
291 unsigned int need_plt_stub:1;
ec338859
AM
292
293 /* Small local sym to section mapping cache. */
294 struct sym_sec_cache sym_sec;
252b5132
RH
295};
296
30667bf3
AM
297/* Various hash macros and functions. */
298#define hppa_link_hash_table(p) \
edd21aca 299 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
252b5132 300
875c0872
DA
301#define hppa_elf_hash_entry(ent) \
302 ((struct elf32_hppa_link_hash_entry *)(ent))
303
304#define hppa_stub_hash_entry(ent) \
305 ((struct elf32_hppa_stub_hash_entry *)(ent))
306
30667bf3
AM
307#define hppa_stub_hash_lookup(table, string, create, copy) \
308 ((struct elf32_hppa_stub_hash_entry *) \
309 bfd_hash_lookup ((table), (string), (create), (copy)))
310
252b5132
RH
311/* Assorted hash table functions. */
312
313/* Initialize an entry in the stub hash table. */
314
315static struct bfd_hash_entry *
c39a58e6
AM
316stub_hash_newfunc (struct bfd_hash_entry *entry,
317 struct bfd_hash_table *table,
318 const char *string)
252b5132 319{
252b5132
RH
320 /* Allocate the structure if it has not already been allocated by a
321 subclass. */
ebe50bae 322 if (entry == NULL)
30667bf3 323 {
ebe50bae
AM
324 entry = bfd_hash_allocate (table,
325 sizeof (struct elf32_hppa_stub_hash_entry));
326 if (entry == NULL)
327 return entry;
30667bf3 328 }
252b5132
RH
329
330 /* Call the allocation method of the superclass. */
ebe50bae
AM
331 entry = bfd_hash_newfunc (entry, table, string);
332 if (entry != NULL)
252b5132 333 {
875c0872 334 struct elf32_hppa_stub_hash_entry *hsh;
ebe50bae 335
252b5132 336 /* Initialize the local fields. */
875c0872
DA
337 hsh = hppa_stub_hash_entry (entry);
338 hsh->stub_sec = NULL;
339 hsh->stub_offset = 0;
340 hsh->target_value = 0;
341 hsh->target_section = NULL;
342 hsh->stub_type = hppa_stub_long_branch;
a63e02c7 343 hsh->hh = NULL;
875c0872 344 hsh->id_sec = NULL;
30667bf3
AM
345 }
346
ebe50bae 347 return entry;
30667bf3
AM
348}
349
30667bf3
AM
350/* Initialize an entry in the link hash table. */
351
352static struct bfd_hash_entry *
c39a58e6
AM
353hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
354 struct bfd_hash_table *table,
355 const char *string)
30667bf3 356{
30667bf3
AM
357 /* Allocate the structure if it has not already been allocated by a
358 subclass. */
ebe50bae 359 if (entry == NULL)
30667bf3 360 {
ebe50bae
AM
361 entry = bfd_hash_allocate (table,
362 sizeof (struct elf32_hppa_link_hash_entry));
363 if (entry == NULL)
364 return entry;
30667bf3
AM
365 }
366
367 /* Call the allocation method of the superclass. */
ebe50bae
AM
368 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
369 if (entry != NULL)
30667bf3 370 {
875c0872 371 struct elf32_hppa_link_hash_entry *hh;
ebe50bae 372
30667bf3 373 /* Initialize the local fields. */
875c0872 374 hh = hppa_elf_hash_entry (entry);
a63e02c7 375 hh->hsh_cache = NULL;
875c0872
DA
376 hh->dyn_relocs = NULL;
377 hh->plabel = 0;
252b5132
RH
378 }
379
ebe50bae 380 return entry;
252b5132
RH
381}
382
252b5132
RH
383/* Create the derived linker hash table. The PA ELF port uses the derived
384 hash table to keep information specific to the PA ELF linker (without
385 using static variables). */
386
387static struct bfd_link_hash_table *
c39a58e6 388elf32_hppa_link_hash_table_create (bfd *abfd)
252b5132 389{
875c0872
DA
390 struct elf32_hppa_link_hash_table *htab;
391 bfd_size_type amt = sizeof (*htab);
252b5132 392
875c0872
DA
393 htab = (struct elf32_hppa_link_hash_table *) bfd_malloc (amt);
394 if (htab == NULL)
252b5132 395 return NULL;
edd21aca 396
a63e02c7 397 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc))
252b5132 398 {
875c0872 399 free (htab);
252b5132
RH
400 return NULL;
401 }
edd21aca
AM
402
403 /* Init the stub hash table too. */
a63e02c7 404 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc))
edd21aca
AM
405 return NULL;
406
875c0872
DA
407 htab->stub_bfd = NULL;
408 htab->add_stub_section = NULL;
409 htab->layout_sections_again = NULL;
410 htab->stub_group = NULL;
411 htab->sgot = NULL;
412 htab->srelgot = NULL;
413 htab->splt = NULL;
414 htab->srelplt = NULL;
415 htab->sdynbss = NULL;
416 htab->srelbss = NULL;
417 htab->text_segment_base = (bfd_vma) -1;
418 htab->data_segment_base = (bfd_vma) -1;
419 htab->multi_subspace = 0;
420 htab->has_12bit_branch = 0;
421 htab->has_17bit_branch = 0;
422 htab->has_22bit_branch = 0;
423 htab->need_plt_stub = 0;
424 htab->sym_sec.abfd = NULL;
425
a63e02c7 426 return &htab->etab.root;
252b5132
RH
427}
428
e2d34d7d
DJ
429/* Free the derived linker hash table. */
430
431static void
875c0872 432elf32_hppa_link_hash_table_free (struct bfd_link_hash_table *btab)
e2d34d7d 433{
875c0872
DA
434 struct elf32_hppa_link_hash_table *htab
435 = (struct elf32_hppa_link_hash_table *) btab;
e2d34d7d 436
a63e02c7 437 bfd_hash_table_free (&htab->bstab);
875c0872 438 _bfd_generic_link_hash_table_free (btab);
e2d34d7d
DJ
439}
440
30667bf3
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441/* Build a name for an entry in the stub hash table. */
442
edd21aca 443static char *
c39a58e6
AM
444hppa_stub_name (const asection *input_section,
445 const asection *sym_sec,
875c0872
DA
446 const struct elf32_hppa_link_hash_entry *hh,
447 const Elf_Internal_Rela *rela)
edd21aca
AM
448{
449 char *stub_name;
dc810e39 450 bfd_size_type len;
edd21aca 451
875c0872 452 if (hh)
30667bf3 453 {
a63e02c7 454 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
30667bf3
AM
455 stub_name = bfd_malloc (len);
456 if (stub_name != NULL)
457 {
458 sprintf (stub_name, "%08x_%s+%x",
459 input_section->id & 0xffffffff,
a63e02c7 460 hh->eh.root.root.string,
875c0872 461 (int) rela->r_addend & 0xffffffff);
30667bf3
AM
462 }
463 }
464 else
edd21aca 465 {
30667bf3
AM
466 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
467 stub_name = bfd_malloc (len);
468 if (stub_name != NULL)
469 {
470 sprintf (stub_name, "%08x_%x:%x+%x",
471 input_section->id & 0xffffffff,
472 sym_sec->id & 0xffffffff,
875c0872
DA
473 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
474 (int) rela->r_addend & 0xffffffff);
30667bf3 475 }
edd21aca
AM
476 }
477 return stub_name;
478}
252b5132 479
30667bf3
AM
480/* Look up an entry in the stub hash. Stub entries are cached because
481 creating the stub name takes a bit of time. */
482
483static struct elf32_hppa_stub_hash_entry *
c39a58e6
AM
484hppa_get_stub_entry (const asection *input_section,
485 const asection *sym_sec,
875c0872
DA
486 struct elf32_hppa_link_hash_entry *hh,
487 const Elf_Internal_Rela *rela,
c39a58e6 488 struct elf32_hppa_link_hash_table *htab)
252b5132 489{
a63e02c7 490 struct elf32_hppa_stub_hash_entry *hsh_entry;
25f72752
AM
491 const asection *id_sec;
492
493 /* If this input section is part of a group of sections sharing one
494 stub section, then use the id of the first section in the group.
495 Stub names need to include a section id, as there may well be
496 more than one stub used to reach say, printf, and we need to
497 distinguish between them. */
83c81bfe 498 id_sec = htab->stub_group[input_section->id].link_sec;
edd21aca 499
a63e02c7
DA
500 if (hh != NULL && hh->hsh_cache != NULL
501 && hh->hsh_cache->hh == hh
502 && hh->hsh_cache->id_sec == id_sec)
edd21aca 503 {
a63e02c7 504 hsh_entry = hh->hsh_cache;
30667bf3
AM
505 }
506 else
507 {
30667bf3 508 char *stub_name;
edd21aca 509
875c0872 510 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
30667bf3
AM
511 if (stub_name == NULL)
512 return NULL;
edd21aca 513
a63e02c7 514 hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
b34976b6 515 stub_name, FALSE, FALSE);
875c0872 516 if (hh != NULL)
a63e02c7 517 hh->hsh_cache = hsh_entry;
30667bf3
AM
518
519 free (stub_name);
edd21aca 520 }
30667bf3 521
a63e02c7 522 return hsh_entry;
30667bf3
AM
523}
524
30667bf3
AM
525/* Add a new stub entry to the stub hash. Not all fields of the new
526 stub entry are initialised. */
527
528static struct elf32_hppa_stub_hash_entry *
c39a58e6
AM
529hppa_add_stub (const char *stub_name,
530 asection *section,
531 struct elf32_hppa_link_hash_table *htab)
30667bf3 532{
25f72752 533 asection *link_sec;
30667bf3 534 asection *stub_sec;
875c0872 535 struct elf32_hppa_stub_hash_entry *hsh;
edd21aca 536
83c81bfe
AM
537 link_sec = htab->stub_group[section->id].link_sec;
538 stub_sec = htab->stub_group[section->id].stub_sec;
30667bf3 539 if (stub_sec == NULL)
edd21aca 540 {
83c81bfe 541 stub_sec = htab->stub_group[link_sec->id].stub_sec;
30667bf3
AM
542 if (stub_sec == NULL)
543 {
d4c88bbb 544 size_t namelen;
dc810e39 545 bfd_size_type len;
30667bf3
AM
546 char *s_name;
547
d4c88bbb
AM
548 namelen = strlen (link_sec->name);
549 len = namelen + sizeof (STUB_SUFFIX);
83c81bfe 550 s_name = bfd_alloc (htab->stub_bfd, len);
30667bf3
AM
551 if (s_name == NULL)
552 return NULL;
553
d4c88bbb
AM
554 memcpy (s_name, link_sec->name, namelen);
555 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
83c81bfe 556 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
30667bf3
AM
557 if (stub_sec == NULL)
558 return NULL;
83c81bfe 559 htab->stub_group[link_sec->id].stub_sec = stub_sec;
30667bf3 560 }
83c81bfe 561 htab->stub_group[section->id].stub_sec = stub_sec;
edd21aca 562 }
252b5132 563
30667bf3 564 /* Enter this entry into the linker stub hash table. */
a63e02c7 565 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
b34976b6 566 TRUE, FALSE);
875c0872 567 if (hsh == NULL)
30667bf3 568 {
d003868e
AM
569 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
570 section->owner,
30667bf3
AM
571 stub_name);
572 return NULL;
edd21aca
AM
573 }
574
875c0872
DA
575 hsh->stub_sec = stub_sec;
576 hsh->stub_offset = 0;
577 hsh->id_sec = link_sec;
578 return hsh;
edd21aca
AM
579}
580
30667bf3
AM
581/* Determine the type of stub needed, if any, for a call. */
582
583static enum elf32_hppa_stub_type
c39a58e6 584hppa_type_of_stub (asection *input_sec,
875c0872
DA
585 const Elf_Internal_Rela *rela,
586 struct elf32_hppa_link_hash_entry *hh,
a252afa4
DA
587 bfd_vma destination,
588 struct bfd_link_info *info)
edd21aca 589{
edd21aca 590 bfd_vma location;
30667bf3
AM
591 bfd_vma branch_offset;
592 bfd_vma max_branch_offset;
593 unsigned int r_type;
594
875c0872 595 if (hh != NULL
a63e02c7
DA
596 && hh->eh.plt.offset != (bfd_vma) -1
597 && hh->eh.dynindx != -1
875c0872 598 && !hh->plabel
a252afa4 599 && (info->shared
a63e02c7
DA
600 || !hh->eh.def_regular
601 || hh->eh.root.type == bfd_link_hash_defweak))
30667bf3 602 {
067fa4a6
AM
603 /* We need an import stub. Decide between hppa_stub_import
604 and hppa_stub_import_shared later. */
30667bf3
AM
605 return hppa_stub_import;
606 }
edd21aca 607
30667bf3
AM
608 /* Determine where the call point is. */
609 location = (input_sec->output_offset
610 + input_sec->output_section->vma
875c0872 611 + rela->r_offset);
edd21aca 612
30667bf3 613 branch_offset = destination - location - 8;
875c0872 614 r_type = ELF32_R_TYPE (rela->r_info);
edd21aca 615
30667bf3
AM
616 /* Determine if a long branch stub is needed. parisc branch offsets
617 are relative to the second instruction past the branch, ie. +8
618 bytes on from the branch instruction location. The offset is
619 signed and counts in units of 4 bytes. */
620 if (r_type == (unsigned int) R_PARISC_PCREL17F)
edd21aca 621 {
30667bf3
AM
622 max_branch_offset = (1 << (17-1)) << 2;
623 }
624 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
625 {
626 max_branch_offset = (1 << (12-1)) << 2;
627 }
25f72752 628 else /* R_PARISC_PCREL22F. */
30667bf3
AM
629 {
630 max_branch_offset = (1 << (22-1)) << 2;
edd21aca
AM
631 }
632
30667bf3 633 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
98ceb8ce
AM
634 return hppa_stub_long_branch;
635
30667bf3
AM
636 return hppa_stub_none;
637}
edd21aca 638
30667bf3
AM
639/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
640 IN_ARG contains the link info pointer. */
edd21aca 641
30667bf3
AM
642#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
643#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
edd21aca 644
30667bf3 645#define BL_R1 0xe8200000 /* b,l .+8,%r1 */
3ee1d854 646#define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
30667bf3 647#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
252b5132 648
3ee1d854
AM
649#define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
650#define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
30667bf3 651#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
3ee1d854 652#define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
252b5132 653
3ee1d854
AM
654#define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
655#define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
edd21aca 656
30667bf3
AM
657#define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
658#define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
659#define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
660#define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
edd21aca 661
067fa4a6 662#define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
30667bf3
AM
663#define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
664#define NOP 0x08000240 /* nop */
665#define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
666#define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
667#define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
edd21aca 668
30667bf3
AM
669#ifndef R19_STUBS
670#define R19_STUBS 1
671#endif
edd21aca 672
30667bf3
AM
673#if R19_STUBS
674#define LDW_R1_DLT LDW_R1_R19
675#else
676#define LDW_R1_DLT LDW_R1_DP
677#endif
edd21aca 678
b34976b6 679static bfd_boolean
875c0872 680hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
30667bf3 681{
875c0872 682 struct elf32_hppa_stub_hash_entry *hsh;
30667bf3 683 struct bfd_link_info *info;
83c81bfe 684 struct elf32_hppa_link_hash_table *htab;
30667bf3
AM
685 asection *stub_sec;
686 bfd *stub_bfd;
687 bfd_byte *loc;
688 bfd_vma sym_value;
74d1c347 689 bfd_vma insn;
8dea1268 690 bfd_vma off;
74d1c347 691 int val;
30667bf3 692 int size;
edd21aca 693
30667bf3 694 /* Massage our args to the form they really have. */
875c0872
DA
695 hsh = hppa_stub_hash_entry (bh);
696 info = (struct bfd_link_info *)in_arg;
30667bf3 697
83c81bfe 698 htab = hppa_link_hash_table (info);
875c0872 699 stub_sec = hsh->stub_sec;
edd21aca 700
30667bf3 701 /* Make a note of the offset within the stubs for this entry. */
875c0872
DA
702 hsh->stub_offset = stub_sec->size;
703 loc = stub_sec->contents + hsh->stub_offset;
252b5132 704
30667bf3
AM
705 stub_bfd = stub_sec->owner;
706
875c0872 707 switch (hsh->stub_type)
30667bf3
AM
708 {
709 case hppa_stub_long_branch:
710 /* Create the long branch. A long branch is formed with "ldil"
711 loading the upper bits of the target address into a register,
712 then branching with "be" which adds in the lower bits.
713 The "be" has its delay slot nullified. */
875c0872
DA
714 sym_value = (hsh->target_value
715 + hsh->target_section->output_offset
716 + hsh->target_section->output_section->vma);
30667bf3 717
c39a58e6 718 val = hppa_field_adjust (sym_value, 0, e_lrsel);
74d1c347 719 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
30667bf3
AM
720 bfd_put_32 (stub_bfd, insn, loc);
721
c39a58e6 722 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
74d1c347 723 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
30667bf3
AM
724 bfd_put_32 (stub_bfd, insn, loc + 4);
725
30667bf3 726 size = 8;
edd21aca
AM
727 break;
728
30667bf3
AM
729 case hppa_stub_long_branch_shared:
730 /* Branches are relative. This is where we are going to. */
875c0872
DA
731 sym_value = (hsh->target_value
732 + hsh->target_section->output_offset
733 + hsh->target_section->output_section->vma);
30667bf3
AM
734
735 /* And this is where we are coming from, more or less. */
875c0872 736 sym_value -= (hsh->stub_offset
30667bf3
AM
737 + stub_sec->output_offset
738 + stub_sec->output_section->vma);
739
74d1c347 740 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
47d89dba 741 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
74d1c347 742 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
30667bf3
AM
743 bfd_put_32 (stub_bfd, insn, loc + 4);
744
47d89dba 745 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
74d1c347 746 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
30667bf3
AM
747 bfd_put_32 (stub_bfd, insn, loc + 8);
748 size = 12;
749 break;
edd21aca 750
30667bf3
AM
751 case hppa_stub_import:
752 case hppa_stub_import_shared:
a63e02c7 753 off = hsh->hh->eh.plt.offset;
8dea1268 754 if (off >= (bfd_vma) -2)
49e9d0d3 755 abort ();
8dea1268
AM
756
757 off &= ~ (bfd_vma) 1;
758 sym_value = (off
83c81bfe
AM
759 + htab->splt->output_offset
760 + htab->splt->output_section->vma
761 - elf_gp (htab->splt->output_section->owner));
30667bf3
AM
762
763 insn = ADDIL_DP;
764#if R19_STUBS
875c0872 765 if (hsh->stub_type == hppa_stub_import_shared)
30667bf3
AM
766 insn = ADDIL_R19;
767#endif
c39a58e6 768 val = hppa_field_adjust (sym_value, 0, e_lrsel),
74d1c347 769 insn = hppa_rebuild_insn ((int) insn, val, 21);
30667bf3 770 bfd_put_32 (stub_bfd, insn, loc);
edd21aca 771
47d89dba
AM
772 /* It is critical to use lrsel/rrsel here because we are using
773 two different offsets (+0 and +4) from sym_value. If we use
774 lsel/rsel then with unfortunate sym_values we will round
775 sym_value+4 up to the next 2k block leading to a mis-match
776 between the lsel and rsel value. */
c39a58e6 777 val = hppa_field_adjust (sym_value, 0, e_rrsel);
74d1c347 778 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
30667bf3 779 bfd_put_32 (stub_bfd, insn, loc + 4);
252b5132 780
83c81bfe 781 if (htab->multi_subspace)
30667bf3 782 {
47d89dba 783 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
74d1c347 784 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
30667bf3 785 bfd_put_32 (stub_bfd, insn, loc + 8);
252b5132 786
74d1c347
AM
787 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
788 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
789 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
790 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
252b5132 791
30667bf3
AM
792 size = 28;
793 }
794 else
795 {
74d1c347 796 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
47d89dba 797 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
74d1c347 798 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
30667bf3 799 bfd_put_32 (stub_bfd, insn, loc + 12);
252b5132 800
30667bf3
AM
801 size = 16;
802 }
252b5132 803
30667bf3 804 break;
252b5132 805
30667bf3
AM
806 case hppa_stub_export:
807 /* Branches are relative. This is where we are going to. */
875c0872
DA
808 sym_value = (hsh->target_value
809 + hsh->target_section->output_offset
810 + hsh->target_section->output_section->vma);
252b5132 811
30667bf3 812 /* And this is where we are coming from. */
875c0872 813 sym_value -= (hsh->stub_offset
30667bf3
AM
814 + stub_sec->output_offset
815 + stub_sec->output_section->vma);
edd21aca 816
067fa4a6
AM
817 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
818 && (!htab->has_22bit_branch
819 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
30667bf3 820 {
edd21aca 821 (*_bfd_error_handler)
d003868e 822 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
875c0872 823 hsh->target_section->owner,
d003868e 824 stub_sec,
875c0872 825 (long) hsh->stub_offset,
a63e02c7 826 hsh->bh_root.string);
30667bf3 827 bfd_set_error (bfd_error_bad_value);
b34976b6 828 return FALSE;
252b5132 829 }
30667bf3 830
74d1c347 831 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
067fa4a6
AM
832 if (!htab->has_22bit_branch)
833 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
834 else
835 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
30667bf3
AM
836 bfd_put_32 (stub_bfd, insn, loc);
837
74d1c347
AM
838 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
839 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
840 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
841 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
842 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
30667bf3
AM
843
844 /* Point the function symbol at the stub. */
a63e02c7
DA
845 hsh->hh->eh.root.u.def.section = stub_sec;
846 hsh->hh->eh.root.u.def.value = stub_sec->size;
30667bf3
AM
847
848 size = 24;
849 break;
850
851 default:
852 BFD_FAIL ();
b34976b6 853 return FALSE;
252b5132
RH
854 }
855
eea6121a 856 stub_sec->size += size;
b34976b6 857 return TRUE;
252b5132
RH
858}
859
30667bf3
AM
860#undef LDIL_R1
861#undef BE_SR4_R1
862#undef BL_R1
863#undef ADDIL_R1
864#undef DEPI_R1
30667bf3
AM
865#undef LDW_R1_R21
866#undef LDW_R1_DLT
867#undef LDW_R1_R19
868#undef ADDIL_R19
869#undef LDW_R1_DP
870#undef LDSID_R21_R1
871#undef MTSP_R1
872#undef BE_SR0_R21
873#undef STW_RP
874#undef BV_R0_R21
875#undef BL_RP
876#undef NOP
877#undef LDW_RP
878#undef LDSID_RP_R1
879#undef BE_SR0_RP
252b5132 880
30667bf3
AM
881/* As above, but don't actually build the stub. Just bump offset so
882 we know stub section sizes. */
883
b34976b6 884static bfd_boolean
875c0872 885hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
252b5132 886{
875c0872 887 struct elf32_hppa_stub_hash_entry *hsh;
83c81bfe 888 struct elf32_hppa_link_hash_table *htab;
30667bf3
AM
889 int size;
890
891 /* Massage our args to the form they really have. */
875c0872 892 hsh = hppa_stub_hash_entry (bh);
c39a58e6 893 htab = in_arg;
30667bf3 894
875c0872 895 if (hsh->stub_type == hppa_stub_long_branch)
98ceb8ce 896 size = 8;
875c0872 897 else if (hsh->stub_type == hppa_stub_long_branch_shared)
30667bf3 898 size = 12;
875c0872 899 else if (hsh->stub_type == hppa_stub_export)
30667bf3 900 size = 24;
74d1c347 901 else /* hppa_stub_import or hppa_stub_import_shared. */
252b5132 902 {
83c81bfe 903 if (htab->multi_subspace)
30667bf3
AM
904 size = 28;
905 else
906 size = 16;
907 }
252b5132 908
875c0872 909 hsh->stub_sec->size += size;
b34976b6 910 return TRUE;
30667bf3 911}
252b5132 912
30667bf3
AM
913/* Return nonzero if ABFD represents an HPPA ELF32 file.
914 Additionally we set the default architecture and machine. */
915
b34976b6 916static bfd_boolean
c39a58e6 917elf32_hppa_object_p (bfd *abfd)
30667bf3 918{
24a5e751
L
919 Elf_Internal_Ehdr * i_ehdrp;
920 unsigned int flags;
252b5132 921
24a5e751
L
922 i_ehdrp = elf_elfheader (abfd);
923 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
924 {
6c21aa76
NC
925 /* GCC on hppa-linux produces binaries with OSABI=Linux,
926 but the kernel produces corefiles with OSABI=SysV. */
927 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX &&
928 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
b34976b6 929 return FALSE;
24a5e751 930 }
225247f0
JT
931 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
932 {
933 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
934 but the kernel produces corefiles with OSABI=SysV. */
935 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
936 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
937 return FALSE;
938 }
24a5e751
L
939 else
940 {
941 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
b34976b6 942 return FALSE;
24a5e751
L
943 }
944
945 flags = i_ehdrp->e_flags;
30667bf3
AM
946 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
947 {
948 case EFA_PARISC_1_0:
949 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
950 case EFA_PARISC_1_1:
951 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
952 case EFA_PARISC_2_0:
953 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
954 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
955 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
956 }
b34976b6 957 return TRUE;
252b5132
RH
958}
959
30667bf3
AM
960/* Create the .plt and .got sections, and set up our hash table
961 short-cuts to various dynamic sections. */
962
b34976b6 963static bfd_boolean
c39a58e6 964elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
252b5132 965{
83c81bfe 966 struct elf32_hppa_link_hash_table *htab;
875c0872 967 struct elf_link_hash_entry *eh;
edd21aca 968
30667bf3 969 /* Don't try to create the .plt and .got twice. */
83c81bfe
AM
970 htab = hppa_link_hash_table (info);
971 if (htab->splt != NULL)
b34976b6 972 return TRUE;
edd21aca 973
30667bf3
AM
974 /* Call the generic code to do most of the work. */
975 if (! _bfd_elf_create_dynamic_sections (abfd, info))
b34976b6 976 return FALSE;
252b5132 977
83c81bfe
AM
978 htab->splt = bfd_get_section_by_name (abfd, ".plt");
979 htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
30667bf3 980
83c81bfe 981 htab->sgot = bfd_get_section_by_name (abfd, ".got");
3496cb2a
L
982 htab->srelgot = bfd_make_section_with_flags (abfd, ".rela.got",
983 (SEC_ALLOC
984 | SEC_LOAD
985 | SEC_HAS_CONTENTS
986 | SEC_IN_MEMORY
987 | SEC_LINKER_CREATED
988 | SEC_READONLY));
83c81bfe 989 if (htab->srelgot == NULL
83c81bfe 990 || ! bfd_set_section_alignment (abfd, htab->srelgot, 2))
b34976b6 991 return FALSE;
edd21aca 992
83c81bfe
AM
993 htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
994 htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
30667bf3 995
b18e2ae5
AM
996 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
997 application, because __canonicalize_funcptr_for_compare needs it. */
875c0872
DA
998 eh = elf_hash_table (info)->hgot;
999 eh->forced_local = 0;
1000 eh->other = STV_DEFAULT;
1001 return bfd_elf_link_record_dynamic_symbol (info, eh);
30667bf3
AM
1002}
1003
ebe50bae
AM
1004/* Copy the extra info we tack onto an elf_link_hash_entry. */
1005
51b64d56 1006static void
9c5bfbb7 1007elf32_hppa_copy_indirect_symbol (const struct elf_backend_data *bed,
875c0872
DA
1008 struct elf_link_hash_entry *eh_dir,
1009 struct elf_link_hash_entry *eh_ind)
ebe50bae 1010{
875c0872 1011 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
ebe50bae 1012
875c0872
DA
1013 hh_dir = hppa_elf_hash_entry (eh_dir);
1014 hh_ind = hppa_elf_hash_entry (eh_ind);
ebe50bae 1015
875c0872 1016 if (hh_ind->dyn_relocs != NULL)
ebe50bae 1017 {
875c0872 1018 if (hh_dir->dyn_relocs != NULL)
bbd7ec4a 1019 {
875c0872
DA
1020 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1021 struct elf32_hppa_dyn_reloc_entry *hdh_p;
bbd7ec4a 1022
875c0872 1023 if (eh_ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM
1024 abort ();
1025
1026 /* Add reloc counts against the weak sym to the strong sym
1027 list. Merge any entries against the same section. */
875c0872 1028 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
bbd7ec4a 1029 {
875c0872 1030 struct elf32_hppa_dyn_reloc_entry *hdh_q;
bbd7ec4a 1031
a63e02c7 1032 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL; hdh_q = hdh_q->hdh_next)
875c0872 1033 if (hdh_q->sec == hdh_p->sec)
bbd7ec4a
AM
1034 {
1035#if RELATIVE_DYNRELOCS
875c0872 1036 hdh_q->relative_count += hdh_p->relative_count;
bbd7ec4a 1037#endif
875c0872 1038 hdh_q->count += hdh_p->count;
a63e02c7 1039 *hdh_pp = hdh_p->hdh_next;
bbd7ec4a
AM
1040 break;
1041 }
875c0872 1042 if (hdh_q == NULL)
a63e02c7 1043 hdh_pp = &hdh_p->hdh_next;
bbd7ec4a 1044 }
875c0872 1045 *hdh_pp = hh_dir->dyn_relocs;
bbd7ec4a
AM
1046 }
1047
875c0872
DA
1048 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1049 hh_ind->dyn_relocs = NULL;
ebe50bae 1050 }
ebe50bae 1051
4fc8051d 1052 if (ELIMINATE_COPY_RELOCS
875c0872
DA
1053 && eh_ind->root.type != bfd_link_hash_indirect
1054 && eh_dir->dynamic_adjusted)
f5385ebf
AM
1055 {
1056 /* If called to transfer flags for a weakdef during processing
1057 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1058 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
875c0872
DA
1059 eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
1060 eh_dir->ref_regular |= eh_ind->ref_regular;
1061 eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
1062 eh_dir->needs_plt |= eh_ind->needs_plt;
f5385ebf 1063 }
4fc8051d 1064 else
875c0872 1065 _bfd_elf_link_hash_copy_indirect (bed, eh_dir, eh_ind);
ebe50bae
AM
1066}
1067
30667bf3 1068/* Look through the relocs for a section during the first phase, and
3ac8354b
AM
1069 calculate needed space in the global offset table, procedure linkage
1070 table, and dynamic reloc sections. At this point we haven't
1071 necessarily read all the input files. */
252b5132 1072
b34976b6 1073static bfd_boolean
c39a58e6
AM
1074elf32_hppa_check_relocs (bfd *abfd,
1075 struct bfd_link_info *info,
1076 asection *sec,
1077 const Elf_Internal_Rela *relocs)
252b5132 1078{
30667bf3 1079 Elf_Internal_Shdr *symtab_hdr;
875c0872
DA
1080 struct elf_link_hash_entry **eh_syms;
1081 const Elf_Internal_Rela *rela;
1082 const Elf_Internal_Rela *rela_end;
83c81bfe 1083 struct elf32_hppa_link_hash_table *htab;
30667bf3
AM
1084 asection *sreloc;
1085 asection *stubreloc;
1086
1049f94e 1087 if (info->relocatable)
b34976b6 1088 return TRUE;
30667bf3 1089
83c81bfe 1090 htab = hppa_link_hash_table (info);
30667bf3 1091 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
875c0872 1092 eh_syms = elf_sym_hashes (abfd);
30667bf3
AM
1093 sreloc = NULL;
1094 stubreloc = NULL;
1095
875c0872
DA
1096 rela_end = relocs + sec->reloc_count;
1097 for (rela = relocs; rela < rela_end; rela++)
30667bf3
AM
1098 {
1099 enum {
1100 NEED_GOT = 1,
1101 NEED_PLT = 2,
1102 NEED_DYNREL = 4,
98ceb8ce 1103 PLT_PLABEL = 8
30667bf3 1104 };
edd21aca 1105
30667bf3 1106 unsigned int r_symndx, r_type;
875c0872
DA
1107 struct elf32_hppa_link_hash_entry *hh;
1108 int need_entry = 0;
252b5132 1109
875c0872 1110 r_symndx = ELF32_R_SYM (rela->r_info);
252b5132 1111
30667bf3 1112 if (r_symndx < symtab_hdr->sh_info)
875c0872 1113 hh = NULL;
30667bf3 1114 else
f7c5057a 1115 {
875c0872 1116 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
a63e02c7
DA
1117 while (hh->eh.root.type == bfd_link_hash_indirect
1118 || hh->eh.root.type == bfd_link_hash_warning)
1119 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
f7c5057a 1120 }
252b5132 1121
875c0872 1122 r_type = ELF32_R_TYPE (rela->r_info);
252b5132 1123
30667bf3
AM
1124 switch (r_type)
1125 {
1126 case R_PARISC_DLTIND14F:
1127 case R_PARISC_DLTIND14R:
1128 case R_PARISC_DLTIND21L:
1129 /* This symbol requires a global offset table entry. */
1130 need_entry = NEED_GOT;
30667bf3
AM
1131 break;
1132
1133 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1134 case R_PARISC_PLABEL21L:
1135 case R_PARISC_PLABEL32:
74d1c347 1136 /* If the addend is non-zero, we break badly. */
875c0872 1137 if (rela->r_addend != 0)
49e9d0d3 1138 abort ();
74d1c347
AM
1139
1140 /* If we are creating a shared library, then we need to
1141 create a PLT entry for all PLABELs, because PLABELs with
1142 local symbols may be passed via a pointer to another
1143 object. Additionally, output a dynamic relocation
4dc86686 1144 pointing to the PLT entry.
875c0872 1145
4dc86686
AM
1146 For executables, the original 32-bit ABI allowed two
1147 different styles of PLABELs (function pointers): For
1148 global functions, the PLABEL word points into the .plt
1149 two bytes past a (function address, gp) pair, and for
1150 local functions the PLABEL points directly at the
1151 function. The magic +2 for the first type allows us to
1152 differentiate between the two. As you can imagine, this
1153 is a real pain when it comes to generating code to call
1154 functions indirectly or to compare function pointers.
1155 We avoid the mess by always pointing a PLABEL into the
1156 .plt, even for local functions. */
74d1c347 1157 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
30667bf3
AM
1158 break;
1159
1160 case R_PARISC_PCREL12F:
83c81bfe 1161 htab->has_12bit_branch = 1;
067fa4a6
AM
1162 goto branch_common;
1163
30667bf3
AM
1164 case R_PARISC_PCREL17C:
1165 case R_PARISC_PCREL17F:
83c81bfe 1166 htab->has_17bit_branch = 1;
067fa4a6
AM
1167 goto branch_common;
1168
30667bf3 1169 case R_PARISC_PCREL22F:
067fa4a6
AM
1170 htab->has_22bit_branch = 1;
1171 branch_common:
47d89dba
AM
1172 /* Function calls might need to go through the .plt, and
1173 might require long branch stubs. */
875c0872 1174 if (hh == NULL)
30667bf3
AM
1175 {
1176 /* We know local syms won't need a .plt entry, and if
1177 they need a long branch stub we can't guarantee that
1178 we can reach the stub. So just flag an error later
1179 if we're doing a shared link and find we need a long
1180 branch stub. */
1181 continue;
1182 }
1183 else
1184 {
1185 /* Global symbols will need a .plt entry if they remain
1186 global, and in most cases won't need a long branch
1187 stub. Unfortunately, we have to cater for the case
1188 where a symbol is forced local by versioning, or due
1189 to symbolic linking, and we lose the .plt entry. */
98ceb8ce 1190 need_entry = NEED_PLT;
a63e02c7 1191 if (hh->eh.type == STT_PARISC_MILLI)
98ceb8ce 1192 need_entry = 0;
30667bf3
AM
1193 }
1194 break;
1195
36751eee 1196 case R_PARISC_SEGBASE: /* Used to set segment base. */
c46b7515 1197 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
30667bf3
AM
1198 case R_PARISC_PCREL14F: /* PC relative load/store. */
1199 case R_PARISC_PCREL14R:
1200 case R_PARISC_PCREL17R: /* External branches. */
1201 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
36751eee 1202 case R_PARISC_PCREL32:
30667bf3
AM
1203 /* We don't need to propagate the relocation if linking a
1204 shared object since these are section relative. */
1205 continue;
1206
1207 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1208 case R_PARISC_DPREL14R:
1209 case R_PARISC_DPREL21L:
1210 if (info->shared)
1211 {
1212 (*_bfd_error_handler)
d003868e
AM
1213 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1214 abfd,
30667bf3
AM
1215 elf_hppa_howto_table[r_type].name);
1216 bfd_set_error (bfd_error_bad_value);
b34976b6 1217 return FALSE;
30667bf3
AM
1218 }
1219 /* Fall through. */
1220
1221 case R_PARISC_DIR17F: /* Used for external branches. */
1222 case R_PARISC_DIR17R:
47d89dba
AM
1223 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1224 case R_PARISC_DIR14R:
30667bf3 1225 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
c46b7515 1226 case R_PARISC_DIR32: /* .word relocs. */
30667bf3
AM
1227 /* We may want to output a dynamic relocation later. */
1228 need_entry = NEED_DYNREL;
1229 break;
1230
1231 /* This relocation describes the C++ object vtable hierarchy.
1232 Reconstruct it for later use during GC. */
1233 case R_PARISC_GNU_VTINHERIT:
a63e02c7 1234 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
b34976b6 1235 return FALSE;
30667bf3
AM
1236 continue;
1237
1238 /* This relocation describes which C++ vtable entries are actually
1239 used. Record for later use during GC. */
1240 case R_PARISC_GNU_VTENTRY:
a63e02c7 1241 if (!bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
b34976b6 1242 return FALSE;
30667bf3
AM
1243 continue;
1244
1245 default:
1246 continue;
1247 }
1248
1249 /* Now carry out our orders. */
1250 if (need_entry & NEED_GOT)
1251 {
1252 /* Allocate space for a GOT entry, as well as a dynamic
25f72752 1253 relocation for this entry. */
83c81bfe 1254 if (htab->sgot == NULL)
30667bf3 1255 {
a63e02c7
DA
1256 if (htab->etab.dynobj == NULL)
1257 htab->etab.dynobj = abfd;
1258 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
b34976b6 1259 return FALSE;
30667bf3
AM
1260 }
1261
875c0872 1262 if (hh != NULL)
30667bf3 1263 {
a63e02c7 1264 hh->eh.got.refcount += 1;
30667bf3
AM
1265 }
1266 else
1267 {
3ac8354b 1268 bfd_signed_vma *local_got_refcounts;
875c0872 1269 /* This is a global offset table entry for a local symbol. */
3ac8354b 1270 local_got_refcounts = elf_local_got_refcounts (abfd);
30667bf3
AM
1271 if (local_got_refcounts == NULL)
1272 {
dc810e39 1273 bfd_size_type size;
30667bf3 1274
74d1c347
AM
1275 /* Allocate space for local got offsets and local
1276 plt offsets. Done this way to save polluting
1277 elf_obj_tdata with another target specific
1278 pointer. */
dc810e39
AM
1279 size = symtab_hdr->sh_info;
1280 size *= 2 * sizeof (bfd_signed_vma);
c39a58e6 1281 local_got_refcounts = bfd_zalloc (abfd, size);
30667bf3 1282 if (local_got_refcounts == NULL)
b34976b6 1283 return FALSE;
30667bf3 1284 elf_local_got_refcounts (abfd) = local_got_refcounts;
30667bf3 1285 }
ebe50bae 1286 local_got_refcounts[r_symndx] += 1;
30667bf3
AM
1287 }
1288 }
1289
1290 if (need_entry & NEED_PLT)
1291 {
1292 /* If we are creating a shared library, and this is a reloc
1293 against a weak symbol or a global symbol in a dynamic
1294 object, then we will be creating an import stub and a
1295 .plt entry for the symbol. Similarly, on a normal link
1296 to symbols defined in a dynamic object we'll need the
1297 import stub and a .plt entry. We don't know yet whether
1298 the symbol is defined or not, so make an entry anyway and
1299 clean up later in adjust_dynamic_symbol. */
1300 if ((sec->flags & SEC_ALLOC) != 0)
1301 {
875c0872 1302 if (hh != NULL)
30667bf3 1303 {
a63e02c7
DA
1304 hh->eh.needs_plt = 1;
1305 hh->eh.plt.refcount += 1;
74d1c347 1306
36605136
AM
1307 /* If this .plt entry is for a plabel, mark it so
1308 that adjust_dynamic_symbol will keep the entry
1309 even if it appears to be local. */
74d1c347 1310 if (need_entry & PLT_PLABEL)
875c0872 1311 hh->plabel = 1;
74d1c347
AM
1312 }
1313 else if (need_entry & PLT_PLABEL)
1314 {
3ac8354b 1315 bfd_signed_vma *local_got_refcounts;
68fb2e56 1316 bfd_signed_vma *local_plt_refcounts;
74d1c347 1317
3ac8354b 1318 local_got_refcounts = elf_local_got_refcounts (abfd);
74d1c347
AM
1319 if (local_got_refcounts == NULL)
1320 {
dc810e39 1321 bfd_size_type size;
74d1c347
AM
1322
1323 /* Allocate space for local got offsets and local
1324 plt offsets. */
dc810e39
AM
1325 size = symtab_hdr->sh_info;
1326 size *= 2 * sizeof (bfd_signed_vma);
c39a58e6 1327 local_got_refcounts = bfd_zalloc (abfd, size);
74d1c347 1328 if (local_got_refcounts == NULL)
b34976b6 1329 return FALSE;
74d1c347 1330 elf_local_got_refcounts (abfd) = local_got_refcounts;
74d1c347 1331 }
68fb2e56
AM
1332 local_plt_refcounts = (local_got_refcounts
1333 + symtab_hdr->sh_info);
ebe50bae 1334 local_plt_refcounts[r_symndx] += 1;
30667bf3 1335 }
30667bf3
AM
1336 }
1337 }
1338
98ceb8ce 1339 if (need_entry & NEED_DYNREL)
30667bf3
AM
1340 {
1341 /* Flag this symbol as having a non-got, non-plt reference
1342 so that we generate copy relocs if it turns out to be
1343 dynamic. */
875c0872 1344 if (hh != NULL && !info->shared)
a63e02c7 1345 hh->eh.non_got_ref = 1;
30667bf3
AM
1346
1347 /* If we are creating a shared library then we need to copy
1348 the reloc into the shared library. However, if we are
1349 linking with -Bsymbolic, we need only copy absolute
1350 relocs or relocs against symbols that are not defined in
1351 an object we are including in the link. PC- or DP- or
1352 DLT-relative relocs against any local sym or global sym
1353 with DEF_REGULAR set, can be discarded. At this point we
1354 have not seen all the input files, so it is possible that
1355 DEF_REGULAR is not set now but will be set later (it is
1356 never cleared). We account for that possibility below by
98ceb8ce 1357 storing information in the dyn_relocs field of the
30667bf3
AM
1358 hash table entry.
1359
1360 A similar situation to the -Bsymbolic case occurs when
1361 creating shared libraries and symbol visibility changes
1362 render the symbol local.
1363
1364 As it turns out, all the relocs we will be creating here
1365 are absolute, so we cannot remove them on -Bsymbolic
1366 links or visibility changes anyway. A STUB_REL reloc
1367 is absolute too, as in that case it is the reloc in the
1368 stub we will be creating, rather than copying the PCREL
56882138
AM
1369 reloc in the branch.
1370
1371 If on the other hand, we are creating an executable, we
1372 may need to keep relocations for symbols satisfied by a
1373 dynamic library if we manage to avoid copy relocs for the
1374 symbol. */
446f2863
AM
1375 if ((info->shared
1376 && (sec->flags & SEC_ALLOC) != 0
1377 && (IS_ABSOLUTE_RELOC (r_type)
875c0872 1378 || (hh != NULL
446f2863 1379 && (!info->symbolic
a63e02c7
DA
1380 || hh->eh.root.type == bfd_link_hash_defweak
1381 || !hh->eh.def_regular))))
4fc8051d
AM
1382 || (ELIMINATE_COPY_RELOCS
1383 && !info->shared
446f2863 1384 && (sec->flags & SEC_ALLOC) != 0
875c0872 1385 && hh != NULL
a63e02c7
DA
1386 && (hh->eh.root.type == bfd_link_hash_defweak
1387 || !hh->eh.def_regular)))
30667bf3 1388 {
875c0872
DA
1389 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1390 struct elf32_hppa_dyn_reloc_entry **hdh_head;
ec338859 1391
30667bf3
AM
1392 /* Create a reloc section in dynobj and make room for
1393 this reloc. */
98ceb8ce 1394 if (sreloc == NULL)
30667bf3
AM
1395 {
1396 char *name;
3ac8354b 1397 bfd *dynobj;
30667bf3 1398
98ceb8ce
AM
1399 name = (bfd_elf_string_from_elf_section
1400 (abfd,
1401 elf_elfheader (abfd)->e_shstrndx,
1402 elf_section_data (sec)->rel_hdr.sh_name));
30667bf3
AM
1403 if (name == NULL)
1404 {
1405 (*_bfd_error_handler)
1406 (_("Could not find relocation section for %s"),
1407 sec->name);
1408 bfd_set_error (bfd_error_bad_value);
b34976b6 1409 return FALSE;
30667bf3
AM
1410 }
1411
a63e02c7
DA
1412 if (htab->etab.dynobj == NULL)
1413 htab->etab.dynobj = abfd;
3ac8354b 1414
a63e02c7 1415 dynobj = htab->etab.dynobj;
98ceb8ce
AM
1416 sreloc = bfd_get_section_by_name (dynobj, name);
1417 if (sreloc == NULL)
30667bf3
AM
1418 {
1419 flagword flags;
1420
30667bf3
AM
1421 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1422 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1423 if ((sec->flags & SEC_ALLOC) != 0)
1424 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L
1425 sreloc = bfd_make_section_with_flags (dynobj,
1426 name,
1427 flags);
98ceb8ce 1428 if (sreloc == NULL
98ceb8ce 1429 || !bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 1430 return FALSE;
30667bf3 1431 }
30667bf3 1432
98ceb8ce 1433 elf_section_data (sec)->sreloc = sreloc;
30667bf3
AM
1434 }
1435
98ceb8ce
AM
1436 /* If this is a global symbol, we count the number of
1437 relocations we need for this symbol. */
875c0872 1438 if (hh != NULL)
30667bf3 1439 {
875c0872 1440 hdh_head = &hh->dyn_relocs;
ec338859
AM
1441 }
1442 else
1443 {
1444 /* Track dynamic relocs needed for local syms too.
1445 We really need local syms available to do this
1446 easily. Oh well. */
1447
875c0872
DA
1448 asection *sr;
1449 sr = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1450 sec, r_symndx);
1451 if (sr == NULL)
b34976b6 1452 return FALSE;
30667bf3 1453
875c0872
DA
1454 hdh_head = ((struct elf32_hppa_dyn_reloc_entry **)
1455 &elf_section_data (sr)->local_dynrel);
ec338859
AM
1456 }
1457
875c0872
DA
1458 hdh_p = *hdh_head;
1459 if (hdh_p == NULL || hdh_p->sec != sec)
ec338859 1460 {
a63e02c7 1461 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
875c0872 1462 if (hdh_p == NULL)
b34976b6 1463 return FALSE;
a63e02c7 1464 hdh_p->hdh_next = *hdh_head;
875c0872
DA
1465 *hdh_head = hdh_p;
1466 hdh_p->sec = sec;
1467 hdh_p->count = 0;
98ceb8ce 1468#if RELATIVE_DYNRELOCS
875c0872 1469 hdh_p->relative_count = 0;
98ceb8ce 1470#endif
ec338859 1471 }
98ceb8ce 1472
875c0872 1473 hdh_p->count += 1;
98ceb8ce 1474#if RELATIVE_DYNRELOCS
ec338859 1475 if (!IS_ABSOLUTE_RELOC (rtype))
875c0872 1476 hdh_p->relative_count += 1;
98ceb8ce 1477#endif
30667bf3
AM
1478 }
1479 }
1480 }
edd21aca 1481
b34976b6 1482 return TRUE;
edd21aca
AM
1483}
1484
30667bf3
AM
1485/* Return the section that should be marked against garbage collection
1486 for a given relocation. */
1487
1488static asection *
c39a58e6
AM
1489elf32_hppa_gc_mark_hook (asection *sec,
1490 struct bfd_link_info *info ATTRIBUTE_UNUSED,
875c0872
DA
1491 Elf_Internal_Rela *rela,
1492 struct elf_link_hash_entry *hh,
c39a58e6 1493 Elf_Internal_Sym *sym)
30667bf3 1494{
875c0872 1495 if (hh != NULL)
30667bf3 1496 {
875c0872 1497 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
30667bf3
AM
1498 {
1499 case R_PARISC_GNU_VTINHERIT:
1500 case R_PARISC_GNU_VTENTRY:
1501 break;
1502
1503 default:
875c0872 1504 switch (hh->root.type)
30667bf3
AM
1505 {
1506 case bfd_link_hash_defined:
1507 case bfd_link_hash_defweak:
875c0872 1508 return hh->root.u.def.section;
30667bf3
AM
1509
1510 case bfd_link_hash_common:
875c0872 1511 return hh->root.u.c.p->section;
30667bf3
AM
1512
1513 default:
1514 break;
1515 }
1516 }
1517 }
1518 else
1e2f5b6e 1519 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
30667bf3
AM
1520
1521 return NULL;
1522}
1523
30667bf3
AM
1524/* Update the got and plt entry reference counts for the section being
1525 removed. */
edd21aca 1526
b34976b6 1527static bfd_boolean
c39a58e6
AM
1528elf32_hppa_gc_sweep_hook (bfd *abfd,
1529 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1530 asection *sec,
1531 const Elf_Internal_Rela *relocs)
edd21aca 1532{
30667bf3 1533 Elf_Internal_Shdr *symtab_hdr;
875c0872 1534 struct elf_link_hash_entry **eh_syms;
30667bf3 1535 bfd_signed_vma *local_got_refcounts;
74d1c347 1536 bfd_signed_vma *local_plt_refcounts;
875c0872 1537 const Elf_Internal_Rela *rela, *relend;
30667bf3 1538
ec338859 1539 elf_section_data (sec)->local_dynrel = NULL;
98ceb8ce 1540
30667bf3 1541 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
875c0872 1542 eh_syms = elf_sym_hashes (abfd);
30667bf3 1543 local_got_refcounts = elf_local_got_refcounts (abfd);
74d1c347
AM
1544 local_plt_refcounts = local_got_refcounts;
1545 if (local_plt_refcounts != NULL)
1546 local_plt_refcounts += symtab_hdr->sh_info;
30667bf3 1547
30667bf3 1548 relend = relocs + sec->reloc_count;
875c0872 1549 for (rela = relocs; rela < relend; rela++)
26e41594
AM
1550 {
1551 unsigned long r_symndx;
1552 unsigned int r_type;
875c0872 1553 struct elf_link_hash_entry *eh = NULL;
26e41594 1554
875c0872 1555 r_symndx = ELF32_R_SYM (rela->r_info);
26e41594
AM
1556 if (r_symndx >= symtab_hdr->sh_info)
1557 {
875c0872
DA
1558 struct elf32_hppa_link_hash_entry *hh;
1559 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1560 struct elf32_hppa_dyn_reloc_entry *hdh_p;
26e41594 1561
875c0872
DA
1562 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1563 while (eh->root.type == bfd_link_hash_indirect
1564 || eh->root.type == bfd_link_hash_warning)
1565 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1566 hh = hppa_elf_hash_entry (eh);
26e41594 1567
a63e02c7 1568 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
875c0872 1569 if (hdh_p->sec == sec)
26e41594
AM
1570 {
1571 /* Everything must go for SEC. */
a63e02c7 1572 *hdh_pp = hdh_p->hdh_next;
26e41594
AM
1573 break;
1574 }
1575 }
1576
875c0872 1577 r_type = ELF32_R_TYPE (rela->r_info);
26e41594
AM
1578 switch (r_type)
1579 {
1580 case R_PARISC_DLTIND14F:
1581 case R_PARISC_DLTIND14R:
1582 case R_PARISC_DLTIND21L:
875c0872 1583 if (eh != NULL)
26e41594 1584 {
875c0872
DA
1585 if (eh->got.refcount > 0)
1586 eh->got.refcount -= 1;
26e41594
AM
1587 }
1588 else if (local_got_refcounts != NULL)
1589 {
1590 if (local_got_refcounts[r_symndx] > 0)
1591 local_got_refcounts[r_symndx] -= 1;
1592 }
1593 break;
98ceb8ce 1594
26e41594
AM
1595 case R_PARISC_PCREL12F:
1596 case R_PARISC_PCREL17C:
1597 case R_PARISC_PCREL17F:
1598 case R_PARISC_PCREL22F:
875c0872 1599 if (eh != NULL)
26e41594 1600 {
875c0872
DA
1601 if (eh->plt.refcount > 0)
1602 eh->plt.refcount -= 1;
26e41594
AM
1603 }
1604 break;
1605
1606 case R_PARISC_PLABEL14R:
1607 case R_PARISC_PLABEL21L:
1608 case R_PARISC_PLABEL32:
875c0872 1609 if (eh != NULL)
26e41594 1610 {
875c0872
DA
1611 if (eh->plt.refcount > 0)
1612 eh->plt.refcount -= 1;
26e41594
AM
1613 }
1614 else if (local_plt_refcounts != NULL)
1615 {
1616 if (local_plt_refcounts[r_symndx] > 0)
1617 local_plt_refcounts[r_symndx] -= 1;
1618 }
1619 break;
1620
1621 default:
1622 break;
1623 }
1624 }
252b5132 1625
b34976b6 1626 return TRUE;
252b5132
RH
1627}
1628
edfc032f
AM
1629/* Support for core dump NOTE sections. */
1630
1631static bfd_boolean
1632elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1633{
1634 int offset;
1635 size_t size;
1636
1637 switch (note->descsz)
1638 {
1639 default:
1640 return FALSE;
1641
1642 case 396: /* Linux/hppa */
1643 /* pr_cursig */
1644 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1645
1646 /* pr_pid */
1647 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1648
1649 /* pr_reg */
1650 offset = 72;
1651 size = 320;
1652
1653 break;
1654 }
1655
1656 /* Make a ".reg/999" section. */
1657 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1658 size, note->descpos + offset);
1659}
1660
1661static bfd_boolean
1662elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1663{
1664 switch (note->descsz)
1665 {
1666 default:
1667 return FALSE;
1668
1669 case 124: /* Linux/hppa elf_prpsinfo. */
1670 elf_tdata (abfd)->core_program
1671 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1672 elf_tdata (abfd)->core_command
1673 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1674 }
1675
1676 /* Note that for some reason, a spurious space is tacked
1677 onto the end of the args in some (at least one anyway)
1678 implementations, so strip it off if it exists. */
1679 {
1680 char *command = elf_tdata (abfd)->core_command;
1681 int n = strlen (command);
1682
1683 if (0 < n && command[n - 1] == ' ')
1684 command[n - 1] = '\0';
1685 }
1686
1687 return TRUE;
1688}
1689
74d1c347
AM
1690/* Our own version of hide_symbol, so that we can keep plt entries for
1691 plabels. */
1692
1693static void
c39a58e6 1694elf32_hppa_hide_symbol (struct bfd_link_info *info,
875c0872 1695 struct elf_link_hash_entry *eh,
c39a58e6 1696 bfd_boolean force_local)
74d1c347 1697{
e5094212
AM
1698 if (force_local)
1699 {
875c0872
DA
1700 eh->forced_local = 1;
1701 if (eh->dynindx != -1)
e5094212 1702 {
875c0872 1703 eh->dynindx = -1;
e5094212 1704 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
875c0872 1705 eh->dynstr_index);
e5094212
AM
1706 }
1707 }
1708
875c0872 1709 if (! hppa_elf_hash_entry(eh)->plabel)
74d1c347 1710 {
875c0872
DA
1711 eh->needs_plt = 0;
1712 eh->plt = elf_hash_table (info)->init_plt_refcount;
74d1c347
AM
1713 }
1714}
1715
30667bf3
AM
1716/* Adjust a symbol defined by a dynamic object and referenced by a
1717 regular object. The current definition is in some section of the
1718 dynamic object, but we're not including those sections. We have to
1719 change the definition to something the rest of the link can
1720 understand. */
252b5132 1721
b34976b6 1722static bfd_boolean
c39a58e6 1723elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
875c0872 1724 struct elf_link_hash_entry *eh)
252b5132 1725{
83c81bfe 1726 struct elf32_hppa_link_hash_table *htab;
875c0872 1727 asection *sec;
3ac8354b 1728 unsigned int power_of_two;
30667bf3
AM
1729
1730 /* If this is a function, put it in the procedure linkage table. We
067fa4a6 1731 will fill in the contents of the procedure linkage table later. */
875c0872
DA
1732 if (eh->type == STT_FUNC
1733 || eh->needs_plt)
30667bf3 1734 {
875c0872
DA
1735 if (eh->plt.refcount <= 0
1736 || (eh->def_regular
1737 && eh->root.type != bfd_link_hash_defweak
1738 && ! hppa_elf_hash_entry (eh)->plabel
30667bf3
AM
1739 && (!info->shared || info->symbolic)))
1740 {
1741 /* The .plt entry is not needed when:
1742 a) Garbage collection has removed all references to the
1743 symbol, or
1744 b) We know for certain the symbol is defined in this
74d1c347
AM
1745 object, and it's not a weak definition, nor is the symbol
1746 used by a plabel relocation. Either this object is the
1747 application or we are doing a shared symbolic link. */
1748
875c0872
DA
1749 eh->plt.offset = (bfd_vma) -1;
1750 eh->needs_plt = 0;
30667bf3 1751 }
4dc86686 1752
b34976b6 1753 return TRUE;
30667bf3 1754 }
bbd7ec4a 1755 else
875c0872 1756 eh->plt.offset = (bfd_vma) -1;
edd21aca 1757
30667bf3
AM
1758 /* If this is a weak symbol, and there is a real definition, the
1759 processor independent code will have arranged for us to see the
1760 real definition first, and we can just use the same value. */
875c0872 1761 if (eh->u.weakdef != NULL)
edd21aca 1762 {
875c0872
DA
1763 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1764 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
49e9d0d3 1765 abort ();
875c0872
DA
1766 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1767 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
4fc8051d 1768 if (ELIMINATE_COPY_RELOCS)
875c0872 1769 eh->non_got_ref = eh->u.weakdef->non_got_ref;
b34976b6 1770 return TRUE;
30667bf3 1771 }
edd21aca 1772
30667bf3
AM
1773 /* This is a reference to a symbol defined by a dynamic object which
1774 is not a function. */
1775
1776 /* If we are creating a shared library, we must presume that the
1777 only references to the symbol are via the global offset table.
1778 For such cases we need not do anything here; the relocations will
1779 be handled correctly by relocate_section. */
1780 if (info->shared)
b34976b6 1781 return TRUE;
30667bf3
AM
1782
1783 /* If there are no references to this symbol that do not use the
1784 GOT, we don't need to generate a copy reloc. */
875c0872 1785 if (!eh->non_got_ref)
b34976b6 1786 return TRUE;
30667bf3 1787
4fc8051d 1788 if (ELIMINATE_COPY_RELOCS)
ebe50bae 1789 {
875c0872
DA
1790 struct elf32_hppa_link_hash_entry *hh;
1791 struct elf32_hppa_dyn_reloc_entry *hdh_p;
ebe50bae 1792
875c0872 1793 hh = hppa_elf_hash_entry (eh);
a63e02c7 1794 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
4fc8051d 1795 {
875c0872
DA
1796 sec = hdh_p->sec->output_section;
1797 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
4fc8051d
AM
1798 break;
1799 }
1800
1801 /* If we didn't find any dynamic relocs in read-only sections, then
1802 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
875c0872 1803 if (hdh_p == NULL)
4fc8051d 1804 {
875c0872 1805 eh->non_got_ref = 0;
4fc8051d
AM
1806 return TRUE;
1807 }
ebe50bae
AM
1808 }
1809
909272ee
AM
1810 if (eh->size == 0)
1811 {
1812 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1813 eh->root.root.string);
1814 return TRUE;
1815 }
1816
30667bf3
AM
1817 /* We must allocate the symbol in our .dynbss section, which will
1818 become part of the .bss section of the executable. There will be
1819 an entry for this symbol in the .dynsym section. The dynamic
1820 object will contain position independent code, so all references
1821 from the dynamic object to this symbol will go through the global
1822 offset table. The dynamic linker will use the .dynsym entry to
1823 determine the address it must put in the global offset table, so
1824 both the dynamic object and the regular object will refer to the
1825 same memory location for the variable. */
1826
3ac8354b 1827 htab = hppa_link_hash_table (info);
30667bf3
AM
1828
1829 /* We must generate a COPY reloc to tell the dynamic linker to
1830 copy the initial value out of the dynamic object and into the
3ac8354b 1831 runtime process image. */
875c0872 1832 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0)
30667bf3 1833 {
eea6121a 1834 htab->srelbss->size += sizeof (Elf32_External_Rela);
875c0872 1835 eh->needs_copy = 1;
edd21aca 1836 }
252b5132 1837
3ac8354b
AM
1838 /* We need to figure out the alignment required for this symbol. I
1839 have no idea how other ELF linkers handle this. */
30667bf3 1840
875c0872 1841 power_of_two = bfd_log2 (eh->size);
3ac8354b
AM
1842 if (power_of_two > 3)
1843 power_of_two = 3;
1844
1845 /* Apply the required alignment. */
875c0872
DA
1846 sec = htab->sdynbss;
1847 sec->size = BFD_ALIGN (sec->size, (bfd_size_type) (1 << power_of_two));
a63e02c7 1848 if (power_of_two > bfd_get_section_alignment (htab->etab.dynobj, sec))
3ac8354b 1849 {
a63e02c7 1850 if (! bfd_set_section_alignment (htab->etab.dynobj, sec, power_of_two))
b34976b6 1851 return FALSE;
3ac8354b 1852 }
30667bf3 1853
30667bf3 1854 /* Define the symbol as being at this point in the section. */
875c0872
DA
1855 eh->root.u.def.section = sec;
1856 eh->root.u.def.value = sec->size;
edd21aca 1857
30667bf3 1858 /* Increment the section size to make room for the symbol. */
875c0872 1859 sec->size += eh->size;
252b5132 1860
b34976b6 1861 return TRUE;
252b5132
RH
1862}
1863
e5ee5df1 1864/* Allocate space in the .plt for entries that won't have relocations.
a252afa4 1865 ie. plabel entries. */
a8d02d66 1866
b34976b6 1867static bfd_boolean
875c0872 1868allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
a8d02d66
AM
1869{
1870 struct bfd_link_info *info;
1871 struct elf32_hppa_link_hash_table *htab;
875c0872
DA
1872 struct elf32_hppa_link_hash_entry *hh;
1873 asection *sec;
a8d02d66 1874
875c0872 1875 if (eh->root.type == bfd_link_hash_indirect)
b34976b6 1876 return TRUE;
a8d02d66 1877
875c0872
DA
1878 if (eh->root.type == bfd_link_hash_warning)
1879 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
e92d460e 1880
875c0872
DA
1881 info = (struct bfd_link_info *) inf;
1882 hh = hppa_elf_hash_entry(eh);
a8d02d66 1883 htab = hppa_link_hash_table (info);
a63e02c7 1884 if (htab->etab.dynamic_sections_created
875c0872 1885 && eh->plt.refcount > 0)
e5ee5df1
AM
1886 {
1887 /* Make sure this symbol is output as a dynamic symbol.
1888 Undefined weak syms won't yet be marked as dynamic. */
875c0872
DA
1889 if (eh->dynindx == -1
1890 && !eh->forced_local
1891 && eh->type != STT_PARISC_MILLI)
a8d02d66 1892 {
875c0872 1893 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
b34976b6 1894 return FALSE;
e5ee5df1
AM
1895 }
1896
875c0872 1897 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
e5ee5df1 1898 {
067fa4a6
AM
1899 /* Allocate these later. From this point on, h->plabel
1900 means that the plt entry is only used by a plabel.
1901 We'll be using a normal plt entry for this symbol, so
1902 clear the plabel indicator. */
875c0872
DA
1903
1904 hh->plabel = 0;
e5ee5df1 1905 }
875c0872 1906 else if (hh->plabel)
e5ee5df1
AM
1907 {
1908 /* Make an entry in the .plt section for plabel references
1909 that won't have a .plt entry for other reasons. */
875c0872
DA
1910 sec = htab->splt;
1911 eh->plt.offset = sec->size;
1912 sec->size += PLT_ENTRY_SIZE;
a8d02d66
AM
1913 }
1914 else
e5ee5df1
AM
1915 {
1916 /* No .plt entry needed. */
875c0872
DA
1917 eh->plt.offset = (bfd_vma) -1;
1918 eh->needs_plt = 0;
e5ee5df1
AM
1919 }
1920 }
1921 else
1922 {
875c0872
DA
1923 eh->plt.offset = (bfd_vma) -1;
1924 eh->needs_plt = 0;
a8d02d66
AM
1925 }
1926
b34976b6 1927 return TRUE;
a8d02d66
AM
1928}
1929
4dc86686
AM
1930/* Allocate space in .plt, .got and associated reloc sections for
1931 global syms. */
1932
b34976b6 1933static bfd_boolean
875c0872 1934allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
4dc86686
AM
1935{
1936 struct bfd_link_info *info;
83c81bfe 1937 struct elf32_hppa_link_hash_table *htab;
875c0872
DA
1938 asection *sec;
1939 struct elf32_hppa_link_hash_entry *hh;
1940 struct elf32_hppa_dyn_reloc_entry *hdh_p;
4dc86686 1941
875c0872 1942 if (eh->root.type == bfd_link_hash_indirect)
b34976b6 1943 return TRUE;
73a74a62 1944
875c0872
DA
1945 if (eh->root.type == bfd_link_hash_warning)
1946 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
e92d460e 1947
c39a58e6 1948 info = inf;
83c81bfe 1949 htab = hppa_link_hash_table (info);
875c0872
DA
1950 hh = hppa_elf_hash_entry (eh);
1951
a63e02c7 1952 if (htab->etab.dynamic_sections_created
875c0872
DA
1953 && eh->plt.offset != (bfd_vma) -1
1954 && !hh->plabel
1955 && eh->plt.refcount > 0)
4dc86686 1956 {
e5ee5df1 1957 /* Make an entry in the .plt section. */
875c0872
DA
1958 sec = htab->splt;
1959 eh->plt.offset = sec->size;
1960 sec->size += PLT_ENTRY_SIZE;
3ac8354b 1961
e5ee5df1 1962 /* We also need to make an entry in the .rela.plt section. */
eea6121a 1963 htab->srelplt->size += sizeof (Elf32_External_Rela);
e5ee5df1 1964 htab->need_plt_stub = 1;
4dc86686 1965 }
edd21aca 1966
875c0872 1967 if (eh->got.refcount > 0)
4dc86686 1968 {
446f2863
AM
1969 /* Make sure this symbol is output as a dynamic symbol.
1970 Undefined weak syms won't yet be marked as dynamic. */
875c0872
DA
1971 if (eh->dynindx == -1
1972 && !eh->forced_local
1973 && eh->type != STT_PARISC_MILLI)
446f2863 1974 {
875c0872 1975 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
b34976b6 1976 return FALSE;
446f2863
AM
1977 }
1978
875c0872
DA
1979 sec = htab->sgot;
1980 eh->got.offset = sec->size;
1981 sec->size += GOT_ENTRY_SIZE;
a63e02c7 1982 if (htab->etab.dynamic_sections_created
ce757d15 1983 && (info->shared
875c0872
DA
1984 || (eh->dynindx != -1
1985 && !eh->forced_local)))
ce757d15 1986 {
eea6121a 1987 htab->srelgot->size += sizeof (Elf32_External_Rela);
ce757d15 1988 }
4dc86686
AM
1989 }
1990 else
875c0872 1991 eh->got.offset = (bfd_vma) -1;
30667bf3 1992
875c0872 1993 if (hh->dyn_relocs == NULL)
b34976b6 1994 return TRUE;
30667bf3 1995
98ceb8ce
AM
1996 /* If this is a -Bsymbolic shared link, then we need to discard all
1997 space allocated for dynamic pc-relative relocs against symbols
1998 defined in a regular object. For the normal shared case, discard
1999 space for relocs that have become local due to symbol visibility
2000 changes. */
2001 if (info->shared)
446f2863 2002 {
98ceb8ce 2003#if RELATIVE_DYNRELOCS
875c0872 2004 if (SYMBOL_CALLS_LOCAL (info, eh))
446f2863 2005 {
875c0872 2006 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
30667bf3 2007
875c0872 2008 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
98ceb8ce 2009 {
875c0872
DA
2010 hdh_p->count -= hdh_p->relative_count;
2011 hdh_p->relative_count = 0;
2012 if (hdh_p->count == 0)
a63e02c7 2013 *hdh_pp = hdh_p->hdh_next;
98ceb8ce 2014 else
a63e02c7 2015 hdh_pp = &hdh_p->hdh_next;
98ceb8ce
AM
2016 }
2017 }
2018#endif
4fc8051d
AM
2019
2020 /* Also discard relocs on undefined weak syms with non-default
2021 visibility. */
875c0872
DA
2022 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2023 && eh->root.type == bfd_link_hash_undefweak)
2024 hh->dyn_relocs = NULL;
446f2863 2025 }
98ceb8ce 2026 else
30667bf3 2027 {
98ceb8ce
AM
2028 /* For the non-shared case, discard space for relocs against
2029 symbols which turn out to need copy relocs or are not
2030 dynamic. */
875c0872
DA
2031
2032 if (!eh->non_got_ref
4fc8051d 2033 && ((ELIMINATE_COPY_RELOCS
875c0872
DA
2034 && eh->def_dynamic
2035 && !eh->def_regular)
a63e02c7 2036 || (htab->etab.dynamic_sections_created
875c0872
DA
2037 && (eh->root.type == bfd_link_hash_undefweak
2038 || eh->root.type == bfd_link_hash_undefined))))
98ceb8ce
AM
2039 {
2040 /* Make sure this symbol is output as a dynamic symbol.
2041 Undefined weak syms won't yet be marked as dynamic. */
875c0872
DA
2042 if (eh->dynindx == -1
2043 && !eh->forced_local
2044 && eh->type != STT_PARISC_MILLI)
98ceb8ce 2045 {
875c0872 2046 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
b34976b6 2047 return FALSE;
98ceb8ce
AM
2048 }
2049
2050 /* If that succeeded, we know we'll be keeping all the
2051 relocs. */
875c0872 2052 if (eh->dynindx != -1)
98ceb8ce
AM
2053 goto keep;
2054 }
446f2863 2055
875c0872 2056 hh->dyn_relocs = NULL;
b34976b6 2057 return TRUE;
98ceb8ce 2058
ec338859 2059 keep: ;
30667bf3 2060 }
30667bf3 2061
98ceb8ce 2062 /* Finally, allocate space. */
a63e02c7 2063 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
30667bf3 2064 {
875c0872
DA
2065 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2066 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
30667bf3 2067 }
30667bf3 2068
b34976b6 2069 return TRUE;
30667bf3 2070}
30667bf3 2071
d5c73c2f
AM
2072/* This function is called via elf_link_hash_traverse to force
2073 millicode symbols local so they do not end up as globals in the
2074 dynamic symbol table. We ought to be able to do this in
2075 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2076 for all dynamic symbols. Arguably, this is a bug in
2077 elf_adjust_dynamic_symbol. */
2078
b34976b6 2079static bfd_boolean
875c0872 2080clobber_millicode_symbols (struct elf_link_hash_entry *eh,
c39a58e6 2081 struct bfd_link_info *info)
d5c73c2f 2082{
875c0872
DA
2083 if (eh->root.type == bfd_link_hash_warning)
2084 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
e92d460e 2085
875c0872
DA
2086 if (eh->type == STT_PARISC_MILLI
2087 && !eh->forced_local)
e0522e89 2088 {
875c0872 2089 elf32_hppa_hide_symbol (info, eh, TRUE);
e0522e89 2090 }
b34976b6 2091 return TRUE;
d5c73c2f
AM
2092}
2093
98ceb8ce
AM
2094/* Find any dynamic relocs that apply to read-only sections. */
2095
b34976b6 2096static bfd_boolean
875c0872 2097readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
98ceb8ce 2098{
875c0872
DA
2099 struct elf32_hppa_link_hash_entry *hh;
2100 struct elf32_hppa_dyn_reloc_entry *hdh_p;
98ceb8ce 2101
875c0872
DA
2102 if (eh->root.type == bfd_link_hash_warning)
2103 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
e92d460e 2104
875c0872 2105 hh = hppa_elf_hash_entry (eh);
a63e02c7 2106 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
98ceb8ce 2107 {
875c0872 2108 asection *sec = hdh_p->sec->output_section;
98ceb8ce 2109
875c0872 2110 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
98ceb8ce 2111 {
c39a58e6 2112 struct bfd_link_info *info = inf;
98ceb8ce
AM
2113
2114 info->flags |= DF_TEXTREL;
2115
2116 /* Not an error, just cut short the traversal. */
b34976b6 2117 return FALSE;
98ceb8ce
AM
2118 }
2119 }
b34976b6 2120 return TRUE;
98ceb8ce
AM
2121}
2122
30667bf3
AM
2123/* Set the sizes of the dynamic sections. */
2124
b34976b6 2125static bfd_boolean
c39a58e6
AM
2126elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2127 struct bfd_link_info *info)
30667bf3 2128{
83c81bfe 2129 struct elf32_hppa_link_hash_table *htab;
30667bf3 2130 bfd *dynobj;
98ceb8ce 2131 bfd *ibfd;
875c0872 2132 asection *sec;
b34976b6 2133 bfd_boolean relocs;
30667bf3 2134
83c81bfe 2135 htab = hppa_link_hash_table (info);
a63e02c7 2136 dynobj = htab->etab.dynobj;
49e9d0d3
AM
2137 if (dynobj == NULL)
2138 abort ();
30667bf3 2139
a63e02c7 2140 if (htab->etab.dynamic_sections_created)
30667bf3
AM
2141 {
2142 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 2143 if (info->executable)
30667bf3 2144 {
875c0872
DA
2145 sec = bfd_get_section_by_name (dynobj, ".interp");
2146 if (sec == NULL)
49e9d0d3 2147 abort ();
875c0872
DA
2148 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2149 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
30667bf3 2150 }
74d1c347 2151
d5c73c2f 2152 /* Force millicode symbols local. */
a63e02c7 2153 elf_link_hash_traverse (&htab->etab,
d5c73c2f
AM
2154 clobber_millicode_symbols,
2155 info);
68fb2e56 2156 }
d5c73c2f 2157
98ceb8ce
AM
2158 /* Set up .got and .plt offsets for local syms, and space for local
2159 dynamic relocs. */
2160 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
68fb2e56
AM
2161 {
2162 bfd_signed_vma *local_got;
2163 bfd_signed_vma *end_local_got;
2164 bfd_signed_vma *local_plt;
2165 bfd_signed_vma *end_local_plt;
2166 bfd_size_type locsymcount;
2167 Elf_Internal_Shdr *symtab_hdr;
2168 asection *srel;
74d1c347 2169
98ceb8ce 2170 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
68fb2e56 2171 continue;
4dc86686 2172
875c0872 2173 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
98ceb8ce 2174 {
875c0872 2175 struct elf32_hppa_dyn_reloc_entry *hdh_p;
98ceb8ce 2176
875c0872
DA
2177 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2178 elf_section_data (sec)->local_dynrel);
2179 hdh_p != NULL;
a63e02c7 2180 hdh_p = hdh_p->hdh_next)
98ceb8ce 2181 {
875c0872
DA
2182 if (!bfd_is_abs_section (hdh_p->sec)
2183 && bfd_is_abs_section (hdh_p->sec->output_section))
ec338859
AM
2184 {
2185 /* Input section has been discarded, either because
2186 it is a copy of a linkonce section or due to
2187 linker script /DISCARD/, so we'll be discarding
2188 the relocs too. */
2189 }
875c0872 2190 else if (hdh_p->count != 0)
ec338859 2191 {
875c0872
DA
2192 srel = elf_section_data (hdh_p->sec)->sreloc;
2193 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2194 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
248866a8 2195 info->flags |= DF_TEXTREL;
ec338859 2196 }
98ceb8ce
AM
2197 }
2198 }
2199
2200 local_got = elf_local_got_refcounts (ibfd);
68fb2e56
AM
2201 if (!local_got)
2202 continue;
74d1c347 2203
98ceb8ce 2204 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
68fb2e56
AM
2205 locsymcount = symtab_hdr->sh_info;
2206 end_local_got = local_got + locsymcount;
875c0872 2207 sec = htab->sgot;
83c81bfe 2208 srel = htab->srelgot;
68fb2e56
AM
2209 for (; local_got < end_local_got; ++local_got)
2210 {
2211 if (*local_got > 0)
4dc86686 2212 {
875c0872
DA
2213 *local_got = sec->size;
2214 sec->size += GOT_ENTRY_SIZE;
2215 if (info->shared)
eea6121a 2216 srel->size += sizeof (Elf32_External_Rela);
4dc86686 2217 }
68fb2e56
AM
2218 else
2219 *local_got = (bfd_vma) -1;
2220 }
74d1c347 2221
68fb2e56
AM
2222 local_plt = end_local_got;
2223 end_local_plt = local_plt + locsymcount;
a63e02c7 2224 if (! htab->etab.dynamic_sections_created)
68fb2e56
AM
2225 {
2226 /* Won't be used, but be safe. */
2227 for (; local_plt < end_local_plt; ++local_plt)
2228 *local_plt = (bfd_vma) -1;
2229 }
2230 else
2231 {
875c0872 2232 sec = htab->splt;
83c81bfe 2233 srel = htab->srelplt;
74d1c347
AM
2234 for (; local_plt < end_local_plt; ++local_plt)
2235 {
2236 if (*local_plt > 0)
2237 {
875c0872
DA
2238 *local_plt = sec->size;
2239 sec->size += PLT_ENTRY_SIZE;
74d1c347 2240 if (info->shared)
eea6121a 2241 srel->size += sizeof (Elf32_External_Rela);
74d1c347
AM
2242 }
2243 else
2244 *local_plt = (bfd_vma) -1;
2245 }
2246 }
30667bf3 2247 }
30667bf3 2248
e5ee5df1
AM
2249 /* Do all the .plt entries without relocs first. The dynamic linker
2250 uses the last .plt reloc to find the end of the .plt (and hence
2251 the start of the .got) for lazy linking. */
a63e02c7 2252 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
a8d02d66 2253
98ceb8ce
AM
2254 /* Allocate global sym .plt and .got entries, and space for global
2255 sym dynamic relocs. */
a63e02c7 2256 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
30667bf3
AM
2257
2258 /* The check_relocs and adjust_dynamic_symbol entry points have
2259 determined the sizes of the various dynamic sections. Allocate
2260 memory for them. */
b34976b6 2261 relocs = FALSE;
875c0872 2262 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
30667bf3 2263 {
875c0872 2264 if ((sec->flags & SEC_LINKER_CREATED) == 0)
30667bf3
AM
2265 continue;
2266
875c0872 2267 if (sec == htab->splt)
68fb2e56 2268 {
83c81bfe 2269 if (htab->need_plt_stub)
68fb2e56
AM
2270 {
2271 /* Make space for the plt stub at the end of the .plt
2272 section. We want this stub right at the end, up
2273 against the .got section. */
83c81bfe 2274 int gotalign = bfd_section_alignment (dynobj, htab->sgot);
875c0872 2275 int pltalign = bfd_section_alignment (dynobj, sec);
68fb2e56 2276 bfd_size_type mask;
30667bf3 2277
68fb2e56 2278 if (gotalign > pltalign)
875c0872 2279 bfd_set_section_alignment (dynobj, sec, gotalign);
68fb2e56 2280 mask = ((bfd_size_type) 1 << gotalign) - 1;
875c0872 2281 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
68fb2e56
AM
2282 }
2283 }
c456f082
AM
2284 else if (sec == htab->sgot
2285 || sec == htab->sdynbss)
68fb2e56 2286 ;
875c0872 2287 else if (strncmp (bfd_get_section_name (dynobj, sec), ".rela", 5) == 0)
30667bf3 2288 {
875c0872 2289 if (sec->size != 0)
30667bf3 2290 {
4e12ff7f
AM
2291 /* Remember whether there are any reloc sections other
2292 than .rela.plt. */
875c0872 2293 if (sec != htab->srelplt)
b34976b6 2294 relocs = TRUE;
47d89dba 2295
30667bf3
AM
2296 /* We use the reloc_count field as a counter if we need
2297 to copy relocs into the output file. */
875c0872 2298 sec->reloc_count = 0;
30667bf3
AM
2299 }
2300 }
30667bf3
AM
2301 else
2302 {
2303 /* It's not one of our sections, so don't allocate space. */
2304 continue;
2305 }
2306
875c0872 2307 if (sec->size == 0)
30667bf3
AM
2308 {
2309 /* If we don't need this section, strip it from the
2310 output file. This is mostly to handle .rela.bss and
2311 .rela.plt. We must create both sections in
2312 create_dynamic_sections, because they must be created
2313 before the linker maps input sections to output
2314 sections. The linker does that before
2315 adjust_dynamic_symbol is called, and it is that
2316 function which decides whether anything needs to go
2317 into these sections. */
875c0872 2318 sec->flags |= SEC_EXCLUDE;
30667bf3
AM
2319 continue;
2320 }
2321
c456f082
AM
2322 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2323 continue;
2324
30667bf3
AM
2325 /* Allocate memory for the section contents. Zero it, because
2326 we may not fill in all the reloc sections. */
875c0872 2327 sec->contents = bfd_zalloc (dynobj, sec->size);
c456f082 2328 if (sec->contents == NULL)
b34976b6 2329 return FALSE;
30667bf3
AM
2330 }
2331
a63e02c7 2332 if (htab->etab.dynamic_sections_created)
30667bf3
AM
2333 {
2334 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2335 actually has nothing to do with the PLT, it is how we
2336 communicate the LTP value of a load module to the dynamic
2337 linker. */
dc810e39 2338#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2339 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39
AM
2340
2341 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 2342 return FALSE;
30667bf3
AM
2343
2344 /* Add some entries to the .dynamic section. We fill in the
2345 values later, in elf32_hppa_finish_dynamic_sections, but we
2346 must add the entries now so that we get the correct size for
2347 the .dynamic section. The DT_DEBUG entry is filled in by the
2348 dynamic linker and used by the debugger. */
dc810e39 2349 if (!info->shared)
30667bf3 2350 {
dc810e39 2351 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2352 return FALSE;
30667bf3
AM
2353 }
2354
eea6121a 2355 if (htab->srelplt->size != 0)
30667bf3 2356 {
dc810e39
AM
2357 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2358 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2359 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2360 return FALSE;
30667bf3
AM
2361 }
2362
2363 if (relocs)
2364 {
dc810e39
AM
2365 if (!add_dynamic_entry (DT_RELA, 0)
2366 || !add_dynamic_entry (DT_RELASZ, 0)
2367 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2368 return FALSE;
30667bf3 2369
98ceb8ce
AM
2370 /* If any dynamic relocs apply to a read-only section,
2371 then we need a DT_TEXTREL entry. */
248866a8 2372 if ((info->flags & DF_TEXTREL) == 0)
a63e02c7 2373 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
98ceb8ce
AM
2374
2375 if ((info->flags & DF_TEXTREL) != 0)
2376 {
2377 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2378 return FALSE;
98ceb8ce 2379 }
30667bf3
AM
2380 }
2381 }
dc810e39 2382#undef add_dynamic_entry
30667bf3 2383
b34976b6 2384 return TRUE;
30667bf3
AM
2385}
2386
30667bf3
AM
2387/* External entry points for sizing and building linker stubs. */
2388
b4655ea9
AM
2389/* Set up various things so that we can make a list of input sections
2390 for each output section included in the link. Returns -1 on error,
cedb70c5 2391 0 when no stubs will be needed, and 1 on success. */
30667bf3 2392
b4655ea9 2393int
c39a58e6 2394elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
30667bf3
AM
2395{
2396 bfd *input_bfd;
b4655ea9
AM
2397 unsigned int bfd_count;
2398 int top_id, top_index;
30667bf3 2399 asection *section;
25f72752 2400 asection **input_list, **list;
dc810e39 2401 bfd_size_type amt;
b4655ea9 2402 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
30667bf3 2403
1badb539
AM
2404 /* Count the number of input BFDs and find the top input section id. */
2405 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
30667bf3
AM
2406 input_bfd != NULL;
2407 input_bfd = input_bfd->link_next)
2408 {
2409 bfd_count += 1;
25f72752
AM
2410 for (section = input_bfd->sections;
2411 section != NULL;
2412 section = section->next)
2413 {
2414 if (top_id < section->id)
2415 top_id = section->id;
2416 }
30667bf3 2417 }
b4655ea9 2418 htab->bfd_count = bfd_count;
30667bf3 2419
dc810e39 2420 amt = sizeof (struct map_stub) * (top_id + 1);
c39a58e6 2421 htab->stub_group = bfd_zmalloc (amt);
83c81bfe 2422 if (htab->stub_group == NULL)
b4655ea9 2423 return -1;
1badb539 2424
b4655ea9 2425 /* We can't use output_bfd->section_count here to find the top output
1badb539 2426 section index as some sections may have been removed, and
8423293d 2427 strip_excluded_output_sections doesn't renumber the indices. */
1badb539
AM
2428 for (section = output_bfd->sections, top_index = 0;
2429 section != NULL;
2430 section = section->next)
2431 {
2432 if (top_index < section->index)
2433 top_index = section->index;
2434 }
2435
b4655ea9 2436 htab->top_index = top_index;
dc810e39 2437 amt = sizeof (asection *) * (top_index + 1);
c39a58e6 2438 input_list = bfd_malloc (amt);
b4655ea9 2439 htab->input_list = input_list;
25f72752 2440 if (input_list == NULL)
b4655ea9 2441 return -1;
25f72752 2442
1badb539
AM
2443 /* For sections we aren't interested in, mark their entries with a
2444 value we can check later. */
2445 list = input_list + top_index;
2446 do
2447 *list = bfd_abs_section_ptr;
2448 while (list-- != input_list);
2449
2450 for (section = output_bfd->sections;
2451 section != NULL;
2452 section = section->next)
2453 {
47d89dba 2454 if ((section->flags & SEC_CODE) != 0)
1badb539
AM
2455 input_list[section->index] = NULL;
2456 }
2457
b4655ea9
AM
2458 return 1;
2459}
2460
2461/* The linker repeatedly calls this function for each input section,
2462 in the order that input sections are linked into output sections.
2463 Build lists of input sections to determine groupings between which
2464 we may insert linker stubs. */
2465
2466void
c39a58e6 2467elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
b4655ea9
AM
2468{
2469 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2470
2471 if (isec->output_section->index <= htab->top_index)
25f72752 2472 {
b4655ea9
AM
2473 asection **list = htab->input_list + isec->output_section->index;
2474 if (*list != bfd_abs_section_ptr)
25f72752 2475 {
b4655ea9 2476 /* Steal the link_sec pointer for our list. */
83c81bfe 2477#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
b4655ea9
AM
2478 /* This happens to make the list in reverse order,
2479 which is what we want. */
2480 PREV_SEC (isec) = *list;
2481 *list = isec;
25f72752
AM
2482 }
2483 }
b4655ea9 2484}
25f72752 2485
b4655ea9
AM
2486/* See whether we can group stub sections together. Grouping stub
2487 sections may result in fewer stubs. More importantly, we need to
2488 put all .init* and .fini* stubs at the beginning of the .init or
2489 .fini output sections respectively, because glibc splits the
2490 _init and _fini functions into multiple parts. Putting a stub in
2491 the middle of a function is not a good idea. */
2492
2493static void
c39a58e6
AM
2494group_sections (struct elf32_hppa_link_hash_table *htab,
2495 bfd_size_type stub_group_size,
2496 bfd_boolean stubs_always_before_branch)
b4655ea9
AM
2497{
2498 asection **list = htab->input_list + htab->top_index;
1badb539 2499 do
25f72752
AM
2500 {
2501 asection *tail = *list;
1badb539
AM
2502 if (tail == bfd_abs_section_ptr)
2503 continue;
25f72752
AM
2504 while (tail != NULL)
2505 {
2506 asection *curr;
2507 asection *prev;
2508 bfd_size_type total;
00b28bb0 2509 bfd_boolean big_sec;
25f72752
AM
2510
2511 curr = tail;
eea6121a 2512 total = tail->size;
00b28bb0
AM
2513 big_sec = total >= stub_group_size;
2514
25f72752
AM
2515 while ((prev = PREV_SEC (curr)) != NULL
2516 && ((total += curr->output_offset - prev->output_offset)
47d89dba 2517 < stub_group_size))
25f72752
AM
2518 curr = prev;
2519
2520 /* OK, the size from the start of CURR to the end is less
a248e267 2521 than 240000 bytes and thus can be handled by one stub
25f72752 2522 section. (or the tail section is itself larger than
a248e267 2523 240000 bytes, in which case we may be toast.)
25f72752
AM
2524 We should really be keeping track of the total size of
2525 stubs added here, as stubs contribute to the final output
2526 section size. That's a little tricky, and this way will
a248e267
AM
2527 only break if stubs added total more than 22144 bytes, or
2528 2768 long branch stubs. It seems unlikely for more than
2529 2768 different functions to be called, especially from
2530 code only 240000 bytes long. This limit used to be
2531 250000, but c++ code tends to generate lots of little
2532 functions, and sometimes violated the assumption. */
25f72752
AM
2533 do
2534 {
2535 prev = PREV_SEC (tail);
2536 /* Set up this stub group. */
83c81bfe 2537 htab->stub_group[tail->id].link_sec = curr;
25f72752
AM
2538 }
2539 while (tail != curr && (tail = prev) != NULL);
2540
a248e267 2541 /* But wait, there's more! Input sections up to 240000
00b28bb0
AM
2542 bytes before the stub section can be handled by it too.
2543 Don't do this if we have a really large section after the
2544 stubs, as adding more stubs increases the chance that
2545 branches may not reach into the stub section. */
2546 if (!stubs_always_before_branch && !big_sec)
25f72752 2547 {
47d89dba
AM
2548 total = 0;
2549 while (prev != NULL
2550 && ((total += tail->output_offset - prev->output_offset)
2551 < stub_group_size))
2552 {
2553 tail = prev;
2554 prev = PREV_SEC (tail);
83c81bfe 2555 htab->stub_group[tail->id].link_sec = curr;
47d89dba 2556 }
25f72752
AM
2557 }
2558 tail = prev;
2559 }
2560 }
b4655ea9
AM
2561 while (list-- != htab->input_list);
2562 free (htab->input_list);
1badb539 2563#undef PREV_SEC
b4655ea9
AM
2564}
2565
2566/* Read in all local syms for all input bfds, and create hash entries
2567 for export stubs if we are building a multi-subspace shared lib.
2568 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2569
2570static int
c39a58e6 2571get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
b4655ea9
AM
2572{
2573 unsigned int bfd_indx;
2574 Elf_Internal_Sym *local_syms, **all_local_syms;
2575 int stub_changed = 0;
2576 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
30667bf3
AM
2577
2578 /* We want to read in symbol extension records only once. To do this
2579 we need to read in the local symbols in parallel and save them for
2580 later use; so hold pointers to the local symbols in an array. */
b4655ea9 2581 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
c39a58e6 2582 all_local_syms = bfd_zmalloc (amt);
b4655ea9 2583 htab->all_local_syms = all_local_syms;
30667bf3 2584 if (all_local_syms == NULL)
b4655ea9 2585 return -1;
30667bf3
AM
2586
2587 /* Walk over all the input BFDs, swapping in local symbols.
2588 If we are creating a shared library, create hash entries for the
2589 export stubs. */
b4655ea9 2590 for (bfd_indx = 0;
30667bf3 2591 input_bfd != NULL;
25f72752 2592 input_bfd = input_bfd->link_next, bfd_indx++)
30667bf3
AM
2593 {
2594 Elf_Internal_Shdr *symtab_hdr;
edd21aca 2595
252b5132
RH
2596 /* We'll need the symbol table in a second. */
2597 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2598 if (symtab_hdr->sh_info == 0)
2599 continue;
2600
6cdc0ccc
AM
2601 /* We need an array of the local symbols attached to the input bfd. */
2602 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
edd21aca 2603 if (local_syms == NULL)
edd21aca 2604 {
6cdc0ccc
AM
2605 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2606 symtab_hdr->sh_info, 0,
2607 NULL, NULL, NULL);
2608 /* Cache them for elf_link_input_bfd. */
2609 symtab_hdr->contents = (unsigned char *) local_syms;
edd21aca 2610 }
6cdc0ccc
AM
2611 if (local_syms == NULL)
2612 return -1;
edd21aca 2613
6cdc0ccc 2614 all_local_syms[bfd_indx] = local_syms;
edd21aca 2615
83c81bfe 2616 if (info->shared && htab->multi_subspace)
30667bf3 2617 {
875c0872
DA
2618 struct elf_link_hash_entry **eh_syms;
2619 struct elf_link_hash_entry **eh_symend;
30667bf3
AM
2620 unsigned int symcount;
2621
2622 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2623 - symtab_hdr->sh_info);
875c0872
DA
2624 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2625 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
30667bf3
AM
2626
2627 /* Look through the global syms for functions; We need to
2628 build export stubs for all globally visible functions. */
875c0872 2629 for (; eh_syms < eh_symend; eh_syms++)
30667bf3 2630 {
875c0872 2631 struct elf32_hppa_link_hash_entry *hh;
30667bf3 2632
875c0872 2633 hh = hppa_elf_hash_entry (*eh_syms);
30667bf3 2634
a63e02c7
DA
2635 while (hh->eh.root.type == bfd_link_hash_indirect
2636 || hh->eh.root.type == bfd_link_hash_warning)
2637 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
30667bf3
AM
2638
2639 /* At this point in the link, undefined syms have been
2640 resolved, so we need to check that the symbol was
2641 defined in this BFD. */
a63e02c7
DA
2642 if ((hh->eh.root.type == bfd_link_hash_defined
2643 || hh->eh.root.type == bfd_link_hash_defweak)
2644 && hh->eh.type == STT_FUNC
2645 && hh->eh.root.u.def.section->output_section != NULL
2646 && (hh->eh.root.u.def.section->output_section->owner
25f72752 2647 == output_bfd)
a63e02c7
DA
2648 && hh->eh.root.u.def.section->owner == input_bfd
2649 && hh->eh.def_regular
2650 && !hh->eh.forced_local
2651 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
30667bf3
AM
2652 {
2653 asection *sec;
2654 const char *stub_name;
875c0872 2655 struct elf32_hppa_stub_hash_entry *hsh;
30667bf3 2656
a63e02c7
DA
2657 sec = hh->eh.root.u.def.section;
2658 stub_name = hh->eh.root.root.string;
2659 hsh = hppa_stub_hash_lookup (&htab->bstab,
30667bf3 2660 stub_name,
b34976b6 2661 FALSE, FALSE);
875c0872 2662 if (hsh == NULL)
30667bf3 2663 {
875c0872
DA
2664 hsh = hppa_add_stub (stub_name, sec, htab);
2665 if (!hsh)
b4655ea9 2666 return -1;
30667bf3 2667
a63e02c7
DA
2668 hsh->target_value = hh->eh.root.u.def.value;
2669 hsh->target_section = hh->eh.root.u.def.section;
875c0872 2670 hsh->stub_type = hppa_stub_export;
a63e02c7 2671 hsh->hh = hh;
30667bf3
AM
2672 stub_changed = 1;
2673 }
2674 else
2675 {
d003868e
AM
2676 (*_bfd_error_handler) (_("%B: duplicate export stub %s"),
2677 input_bfd,
8f615d07 2678 stub_name);
30667bf3
AM
2679 }
2680 }
2681 }
30667bf3
AM
2682 }
2683 }
edd21aca 2684
b4655ea9
AM
2685 return stub_changed;
2686}
2687
2688/* Determine and set the size of the stub section for a final link.
2689
2690 The basic idea here is to examine all the relocations looking for
2691 PC-relative calls to a target that is unreachable with a "bl"
2692 instruction. */
2693
b34976b6 2694bfd_boolean
c39a58e6
AM
2695elf32_hppa_size_stubs
2696 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2697 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2698 asection * (*add_stub_section) (const char *, asection *),
2699 void (*layout_sections_again) (void))
b4655ea9
AM
2700{
2701 bfd_size_type stub_group_size;
b34976b6
AM
2702 bfd_boolean stubs_always_before_branch;
2703 bfd_boolean stub_changed;
b4655ea9
AM
2704 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2705
2706 /* Stash our params away. */
2707 htab->stub_bfd = stub_bfd;
2708 htab->multi_subspace = multi_subspace;
2709 htab->add_stub_section = add_stub_section;
2710 htab->layout_sections_again = layout_sections_again;
2711 stubs_always_before_branch = group_size < 0;
2712 if (group_size < 0)
2713 stub_group_size = -group_size;
2714 else
2715 stub_group_size = group_size;
2716 if (stub_group_size == 1)
2717 {
2718 /* Default values. */
acc990f2
AM
2719 if (stubs_always_before_branch)
2720 {
2721 stub_group_size = 7680000;
2722 if (htab->has_17bit_branch || htab->multi_subspace)
2723 stub_group_size = 240000;
2724 if (htab->has_12bit_branch)
2725 stub_group_size = 7500;
2726 }
2727 else
2728 {
2729 stub_group_size = 6971392;
2730 if (htab->has_17bit_branch || htab->multi_subspace)
2731 stub_group_size = 217856;
2732 if (htab->has_12bit_branch)
2733 stub_group_size = 6808;
2734 }
b4655ea9
AM
2735 }
2736
2737 group_sections (htab, stub_group_size, stubs_always_before_branch);
2738
2739 switch (get_local_syms (output_bfd, info->input_bfds, info))
2740 {
2741 default:
2742 if (htab->all_local_syms)
2743 goto error_ret_free_local;
b34976b6 2744 return FALSE;
b4655ea9
AM
2745
2746 case 0:
b34976b6 2747 stub_changed = FALSE;
b4655ea9
AM
2748 break;
2749
2750 case 1:
b34976b6 2751 stub_changed = TRUE;
b4655ea9
AM
2752 break;
2753 }
2754
edd21aca
AM
2755 while (1)
2756 {
b4655ea9
AM
2757 bfd *input_bfd;
2758 unsigned int bfd_indx;
30667bf3
AM
2759 asection *stub_sec;
2760
25f72752 2761 for (input_bfd = info->input_bfds, bfd_indx = 0;
30667bf3 2762 input_bfd != NULL;
25f72752 2763 input_bfd = input_bfd->link_next, bfd_indx++)
30667bf3
AM
2764 {
2765 Elf_Internal_Shdr *symtab_hdr;
b4655ea9
AM
2766 asection *section;
2767 Elf_Internal_Sym *local_syms;
30667bf3
AM
2768
2769 /* We'll need the symbol table in a second. */
2770 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2771 if (symtab_hdr->sh_info == 0)
2772 continue;
2773
b4655ea9 2774 local_syms = htab->all_local_syms[bfd_indx];
30667bf3
AM
2775
2776 /* Walk over each section attached to the input bfd. */
2777 for (section = input_bfd->sections;
2778 section != NULL;
25f72752 2779 section = section->next)
30667bf3 2780 {
30667bf3
AM
2781 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2782
2783 /* If there aren't any relocs, then there's nothing more
2784 to do. */
2785 if ((section->flags & SEC_RELOC) == 0
2786 || section->reloc_count == 0)
2787 continue;
2788
25f72752
AM
2789 /* If this section is a link-once section that will be
2790 discarded, then don't create any stubs. */
2791 if (section->output_section == NULL
2792 || section->output_section->owner != output_bfd)
2793 continue;
2794
1e2f5b6e
AM
2795 /* Get the relocs. */
2796 internal_relocs
c39a58e6 2797 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 2798 info->keep_memory);
30667bf3 2799 if (internal_relocs == NULL)
1e2f5b6e 2800 goto error_ret_free_local;
30667bf3
AM
2801
2802 /* Now examine each relocation. */
2803 irela = internal_relocs;
2804 irelaend = irela + section->reloc_count;
2805 for (; irela < irelaend; irela++)
2806 {
2807 unsigned int r_type, r_indx;
2808 enum elf32_hppa_stub_type stub_type;
875c0872 2809 struct elf32_hppa_stub_hash_entry *hsh;
30667bf3
AM
2810 asection *sym_sec;
2811 bfd_vma sym_value;
2812 bfd_vma destination;
875c0872 2813 struct elf32_hppa_link_hash_entry *hh;
30667bf3 2814 char *stub_name;
25f72752 2815 const asection *id_sec;
30667bf3
AM
2816
2817 r_type = ELF32_R_TYPE (irela->r_info);
2818 r_indx = ELF32_R_SYM (irela->r_info);
2819
2820 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2821 {
2822 bfd_set_error (bfd_error_bad_value);
1e2f5b6e
AM
2823 error_ret_free_internal:
2824 if (elf_section_data (section)->relocs == NULL)
2825 free (internal_relocs);
2826 goto error_ret_free_local;
30667bf3
AM
2827 }
2828
2829 /* Only look for stubs on call instructions. */
2830 if (r_type != (unsigned int) R_PARISC_PCREL12F
2831 && r_type != (unsigned int) R_PARISC_PCREL17F
2832 && r_type != (unsigned int) R_PARISC_PCREL22F)
2833 continue;
2834
2835 /* Now determine the call target, its name, value,
2836 section. */
2837 sym_sec = NULL;
2838 sym_value = 0;
2839 destination = 0;
875c0872 2840 hh = NULL;
30667bf3
AM
2841 if (r_indx < symtab_hdr->sh_info)
2842 {
2843 /* It's a local symbol. */
2844 Elf_Internal_Sym *sym;
2845 Elf_Internal_Shdr *hdr;
2846
2847 sym = local_syms + r_indx;
2848 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
2849 sym_sec = hdr->bfd_section;
2850 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2851 sym_value = sym->st_value;
2852 destination = (sym_value + irela->r_addend
2853 + sym_sec->output_offset
2854 + sym_sec->output_section->vma);
2855 }
2856 else
2857 {
2858 /* It's an external symbol. */
2859 int e_indx;
2860
2861 e_indx = r_indx - symtab_hdr->sh_info;
875c0872 2862 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
30667bf3 2863
a63e02c7
DA
2864 while (hh->eh.root.type == bfd_link_hash_indirect
2865 || hh->eh.root.type == bfd_link_hash_warning)
2866 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
30667bf3 2867
a63e02c7
DA
2868 if (hh->eh.root.type == bfd_link_hash_defined
2869 || hh->eh.root.type == bfd_link_hash_defweak)
30667bf3 2870 {
a63e02c7
DA
2871 sym_sec = hh->eh.root.u.def.section;
2872 sym_value = hh->eh.root.u.def.value;
30667bf3
AM
2873 if (sym_sec->output_section != NULL)
2874 destination = (sym_value + irela->r_addend
2875 + sym_sec->output_offset
2876 + sym_sec->output_section->vma);
2877 }
a63e02c7 2878 else if (hh->eh.root.type == bfd_link_hash_undefweak)
c432ba1a
AM
2879 {
2880 if (! info->shared)
2881 continue;
2882 }
a63e02c7 2883 else if (hh->eh.root.type == bfd_link_hash_undefined)
c432ba1a 2884 {
59c2e50f 2885 if (! (info->unresolved_syms_in_objects == RM_IGNORE
a63e02c7 2886 && (ELF_ST_VISIBILITY (hh->eh.other)
c432ba1a 2887 == STV_DEFAULT)
a63e02c7 2888 && hh->eh.type != STT_PARISC_MILLI))
c432ba1a
AM
2889 continue;
2890 }
30667bf3
AM
2891 else
2892 {
2893 bfd_set_error (bfd_error_bad_value);
2894 goto error_ret_free_internal;
2895 }
2896 }
2897
2898 /* Determine what (if any) linker stub is needed. */
875c0872 2899 stub_type = hppa_type_of_stub (section, irela, hh,
a252afa4 2900 destination, info);
30667bf3
AM
2901 if (stub_type == hppa_stub_none)
2902 continue;
2903
25f72752 2904 /* Support for grouping stub sections. */
83c81bfe 2905 id_sec = htab->stub_group[section->id].link_sec;
25f72752 2906
30667bf3 2907 /* Get the name of this stub. */
875c0872 2908 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
30667bf3
AM
2909 if (!stub_name)
2910 goto error_ret_free_internal;
2911
a63e02c7 2912 hsh = hppa_stub_hash_lookup (&htab->bstab,
30667bf3 2913 stub_name,
b34976b6 2914 FALSE, FALSE);
875c0872 2915 if (hsh != NULL)
30667bf3
AM
2916 {
2917 /* The proper stub has already been created. */
2918 free (stub_name);
2919 continue;
2920 }
2921
875c0872
DA
2922 hsh = hppa_add_stub (stub_name, section, htab);
2923 if (hsh == NULL)
30667bf3
AM
2924 {
2925 free (stub_name);
1e2f5b6e 2926 goto error_ret_free_internal;
30667bf3
AM
2927 }
2928
875c0872
DA
2929 hsh->target_value = sym_value;
2930 hsh->target_section = sym_sec;
2931 hsh->stub_type = stub_type;
30667bf3
AM
2932 if (info->shared)
2933 {
2934 if (stub_type == hppa_stub_import)
875c0872 2935 hsh->stub_type = hppa_stub_import_shared;
98ceb8ce 2936 else if (stub_type == hppa_stub_long_branch)
875c0872 2937 hsh->stub_type = hppa_stub_long_branch_shared;
30667bf3 2938 }
a63e02c7 2939 hsh->hh = hh;
b34976b6 2940 stub_changed = TRUE;
30667bf3
AM
2941 }
2942
2943 /* We're done with the internal relocs, free them. */
1e2f5b6e
AM
2944 if (elf_section_data (section)->relocs == NULL)
2945 free (internal_relocs);
30667bf3
AM
2946 }
2947 }
2948
2949 if (!stub_changed)
2950 break;
2951
2952 /* OK, we've added some stubs. Find out the new size of the
2953 stub sections. */
83c81bfe 2954 for (stub_sec = htab->stub_bfd->sections;
30667bf3
AM
2955 stub_sec != NULL;
2956 stub_sec = stub_sec->next)
eea6121a 2957 stub_sec->size = 0;
74d1c347 2958
a63e02c7 2959 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
74d1c347 2960
30667bf3 2961 /* Ask the linker to do its stuff. */
83c81bfe 2962 (*htab->layout_sections_again) ();
b34976b6 2963 stub_changed = FALSE;
30667bf3
AM
2964 }
2965
6cdc0ccc 2966 free (htab->all_local_syms);
b34976b6 2967 return TRUE;
30667bf3
AM
2968
2969 error_ret_free_local:
b4655ea9 2970 free (htab->all_local_syms);
b34976b6 2971 return FALSE;
30667bf3
AM
2972}
2973
30667bf3
AM
2974/* For a final link, this function is called after we have sized the
2975 stubs to provide a value for __gp. */
2976
b34976b6 2977bfd_boolean
c39a58e6 2978elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
30667bf3 2979{
b4655ea9
AM
2980 struct bfd_link_hash_entry *h;
2981 asection *sec = NULL;
2982 bfd_vma gp_val = 0;
83c81bfe 2983 struct elf32_hppa_link_hash_table *htab;
30667bf3 2984
83c81bfe 2985 htab = hppa_link_hash_table (info);
a63e02c7 2986 h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE);
30667bf3 2987
df8634e3 2988 if (h != NULL
b4655ea9
AM
2989 && (h->type == bfd_link_hash_defined
2990 || h->type == bfd_link_hash_defweak))
30667bf3 2991 {
b4655ea9
AM
2992 gp_val = h->u.def.value;
2993 sec = h->u.def.section;
30667bf3
AM
2994 }
2995 else
2996 {
0eddce27
AM
2997 asection *splt = bfd_get_section_by_name (abfd, ".plt");
2998 asection *sgot = bfd_get_section_by_name (abfd, ".got");
b4655ea9 2999
74d1c347
AM
3000 /* Choose to point our LTP at, in this order, one of .plt, .got,
3001 or .data, if these sections exist. In the case of choosing
3002 .plt try to make the LTP ideal for addressing anywhere in the
3003 .plt or .got with a 14 bit signed offset. Typically, the end
3004 of the .plt is the start of the .got, so choose .plt + 0x2000
3005 if either the .plt or .got is larger than 0x2000. If both
3006 the .plt and .got are smaller than 0x2000, choose the end of
3007 the .plt section. */
225247f0
JT
3008 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3009 ? NULL : splt;
74d1c347 3010 if (sec != NULL)
30667bf3 3011 {
eea6121a
AM
3012 gp_val = sec->size;
3013 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
74d1c347
AM
3014 {
3015 gp_val = 0x2000;
3016 }
3017 }
3018 else
3019 {
b4655ea9 3020 sec = sgot;
74d1c347
AM
3021 if (sec != NULL)
3022 {
225247f0
JT
3023 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3024 {
3025 /* We know we don't have a .plt. If .got is large,
3026 offset our LTP. */
3027 if (sec->size > 0x2000)
3028 gp_val = 0x2000;
3029 }
74d1c347
AM
3030 }
3031 else
3032 {
3033 /* No .plt or .got. Who cares what the LTP is? */
3034 sec = bfd_get_section_by_name (abfd, ".data");
3035 }
30667bf3 3036 }
df8634e3
AM
3037
3038 if (h != NULL)
3039 {
b4655ea9
AM
3040 h->type = bfd_link_hash_defined;
3041 h->u.def.value = gp_val;
df8634e3 3042 if (sec != NULL)
b4655ea9 3043 h->u.def.section = sec;
df8634e3 3044 else
b4655ea9 3045 h->u.def.section = bfd_abs_section_ptr;
df8634e3 3046 }
30667bf3
AM
3047 }
3048
b32b5d6e 3049 if (sec != NULL && sec->output_section != NULL)
74d1c347
AM
3050 gp_val += sec->output_section->vma + sec->output_offset;
3051
3052 elf_gp (abfd) = gp_val;
b34976b6 3053 return TRUE;
30667bf3
AM
3054}
3055
30667bf3
AM
3056/* Build all the stubs associated with the current output file. The
3057 stubs are kept in a hash table attached to the main linker hash
3058 table. We also set up the .plt entries for statically linked PIC
3059 functions here. This function is called via hppaelf_finish in the
3060 linker. */
3061
b34976b6 3062bfd_boolean
c39a58e6 3063elf32_hppa_build_stubs (struct bfd_link_info *info)
30667bf3
AM
3064{
3065 asection *stub_sec;
3066 struct bfd_hash_table *table;
83c81bfe 3067 struct elf32_hppa_link_hash_table *htab;
30667bf3 3068
83c81bfe 3069 htab = hppa_link_hash_table (info);
30667bf3 3070
83c81bfe 3071 for (stub_sec = htab->stub_bfd->sections;
30667bf3
AM
3072 stub_sec != NULL;
3073 stub_sec = stub_sec->next)
3074 {
dc810e39 3075 bfd_size_type size;
30667bf3
AM
3076
3077 /* Allocate memory to hold the linker stubs. */
eea6121a 3078 size = stub_sec->size;
c39a58e6 3079 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
30667bf3 3080 if (stub_sec->contents == NULL && size != 0)
b34976b6 3081 return FALSE;
eea6121a 3082 stub_sec->size = 0;
30667bf3
AM
3083 }
3084
3085 /* Build the stubs as directed by the stub hash table. */
a63e02c7 3086 table = &htab->bstab;
30667bf3
AM
3087 bfd_hash_traverse (table, hppa_build_one_stub, info);
3088
b34976b6 3089 return TRUE;
30667bf3
AM
3090}
3091
c46b7515
AM
3092/* Perform a final link. */
3093
b34976b6 3094static bfd_boolean
c39a58e6 3095elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
c46b7515 3096{
4dc86686 3097 /* Invoke the regular ELF linker to do all the work. */
c152c796 3098 if (!bfd_elf_final_link (abfd, info))
b34976b6 3099 return FALSE;
c46b7515
AM
3100
3101 /* If we're producing a final executable, sort the contents of the
985142a4 3102 unwind section. */
46fe4e66 3103 return elf_hppa_sort_unwind (abfd);
c46b7515
AM
3104}
3105
3106/* Record the lowest address for the data and text segments. */
3107
3108static void
c39a58e6
AM
3109hppa_record_segment_addr (bfd *abfd ATTRIBUTE_UNUSED,
3110 asection *section,
3111 void *data)
c46b7515 3112{
83c81bfe 3113 struct elf32_hppa_link_hash_table *htab;
c46b7515 3114
875c0872 3115 htab = (struct elf32_hppa_link_hash_table*) data;
c46b7515
AM
3116
3117 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3118 {
3119 bfd_vma value = section->vma - section->filepos;
3120
3121 if ((section->flags & SEC_READONLY) != 0)
3122 {
83c81bfe
AM
3123 if (value < htab->text_segment_base)
3124 htab->text_segment_base = value;
c46b7515
AM
3125 }
3126 else
3127 {
83c81bfe
AM
3128 if (value < htab->data_segment_base)
3129 htab->data_segment_base = value;
c46b7515
AM
3130 }
3131 }
3132}
3133
30667bf3
AM
3134/* Perform a relocation as part of a final link. */
3135
3136static bfd_reloc_status_type
c39a58e6
AM
3137final_link_relocate (asection *input_section,
3138 bfd_byte *contents,
875c0872 3139 const Elf_Internal_Rela *rela,
c39a58e6
AM
3140 bfd_vma value,
3141 struct elf32_hppa_link_hash_table *htab,
3142 asection *sym_sec,
875c0872 3143 struct elf32_hppa_link_hash_entry *hh,
a252afa4 3144 struct bfd_link_info *info)
30667bf3
AM
3145{
3146 int insn;
875c0872 3147 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
a252afa4 3148 unsigned int orig_r_type = r_type;
30667bf3
AM
3149 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3150 int r_format = howto->bitsize;
3151 enum hppa_reloc_field_selector_type_alt r_field;
3152 bfd *input_bfd = input_section->owner;
875c0872 3153 bfd_vma offset = rela->r_offset;
30667bf3
AM
3154 bfd_vma max_branch_offset = 0;
3155 bfd_byte *hit_data = contents + offset;
875c0872 3156 bfd_signed_vma addend = rela->r_addend;
30667bf3 3157 bfd_vma location;
875c0872
DA
3158 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3159 int val;
30667bf3
AM
3160
3161 if (r_type == R_PARISC_NONE)
3162 return bfd_reloc_ok;
3163
3164 insn = bfd_get_32 (input_bfd, hit_data);
3165
3166 /* Find out where we are and where we're going. */
3167 location = (offset +
3168 input_section->output_offset +
3169 input_section->output_section->vma);
3170
a252afa4
DA
3171 /* If we are not building a shared library, convert DLTIND relocs to
3172 DPREL relocs. */
3173 if (!info->shared)
3174 {
3175 switch (r_type)
4fc8051d
AM
3176 {
3177 case R_PARISC_DLTIND21L:
3178 r_type = R_PARISC_DPREL21L;
a252afa4
DA
3179 break;
3180
4fc8051d
AM
3181 case R_PARISC_DLTIND14R:
3182 r_type = R_PARISC_DPREL14R;
a252afa4
DA
3183 break;
3184
4fc8051d
AM
3185 case R_PARISC_DLTIND14F:
3186 r_type = R_PARISC_DPREL14F;
a252afa4
DA
3187 break;
3188 }
3189 }
3190
30667bf3
AM
3191 switch (r_type)
3192 {
3193 case R_PARISC_PCREL12F:
3194 case R_PARISC_PCREL17F:
3195 case R_PARISC_PCREL22F:
067fa4a6
AM
3196 /* If this call should go via the plt, find the import stub in
3197 the stub hash. */
30667bf3
AM
3198 if (sym_sec == NULL
3199 || sym_sec->output_section == NULL
875c0872 3200 || (hh != NULL
a63e02c7
DA
3201 && hh->eh.plt.offset != (bfd_vma) -1
3202 && hh->eh.dynindx != -1
875c0872 3203 && !hh->plabel
a252afa4 3204 && (info->shared
a63e02c7
DA
3205 || !hh->eh.def_regular
3206 || hh->eh.root.type == bfd_link_hash_defweak)))
30667bf3 3207 {
875c0872
DA
3208 hsh = hppa_get_stub_entry (input_section, sym_sec,
3209 hh, rela, htab);
3210 if (hsh != NULL)
30667bf3 3211 {
875c0872
DA
3212 value = (hsh->stub_offset
3213 + hsh->stub_sec->output_offset
3214 + hsh->stub_sec->output_section->vma);
30667bf3
AM
3215 addend = 0;
3216 }
875c0872 3217 else if (sym_sec == NULL && hh != NULL
a63e02c7 3218 && hh->eh.root.type == bfd_link_hash_undefweak)
30667bf3 3219 {
db20fd76
AM
3220 /* It's OK if undefined weak. Calls to undefined weak
3221 symbols behave as if the "called" function
3222 immediately returns. We can thus call to a weak
3223 function without first checking whether the function
3224 is defined. */
30667bf3 3225 value = location;
db20fd76 3226 addend = 8;
30667bf3
AM
3227 }
3228 else
f09ebc7d 3229 return bfd_reloc_undefined;
30667bf3
AM
3230 }
3231 /* Fall thru. */
3232
3233 case R_PARISC_PCREL21L:
3234 case R_PARISC_PCREL17C:
3235 case R_PARISC_PCREL17R:
3236 case R_PARISC_PCREL14R:
3237 case R_PARISC_PCREL14F:
36751eee 3238 case R_PARISC_PCREL32:
30667bf3
AM
3239 /* Make it a pc relative offset. */
3240 value -= location;
3241 addend -= 8;
3242 break;
3243
3244 case R_PARISC_DPREL21L:
3245 case R_PARISC_DPREL14R:
3246 case R_PARISC_DPREL14F:
a252afa4
DA
3247 /* Convert instructions that use the linkage table pointer (r19) to
3248 instructions that use the global data pointer (dp). This is the
3249 most efficient way of using PIC code in an incomplete executable,
3250 but the user must follow the standard runtime conventions for
3251 accessing data for this to work. */
3252 if (orig_r_type == R_PARISC_DLTIND21L)
3253 {
3254 /* Convert addil instructions if the original reloc was a
3255 DLTIND21L. GCC sometimes uses a register other than r19 for
3256 the operation, so we must convert any addil instruction
3257 that uses this relocation. */
3258 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3259 insn = ADDIL_DP;
3260 else
3261 /* We must have a ldil instruction. It's too hard to find
3262 and convert the associated add instruction, so issue an
3263 error. */
3264 (*_bfd_error_handler)
d003868e
AM
3265 (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3266 input_bfd,
3267 input_section,
875c0872 3268 offset,
a252afa4
DA
3269 howto->name,
3270 insn);
3271 }
3272 else if (orig_r_type == R_PARISC_DLTIND14F)
3273 {
3274 /* This must be a format 1 load/store. Change the base
3275 register to dp. */
3276 insn = (insn & 0xfc1ffff) | (27 << 21);
3277 }
3278
30667bf3 3279 /* For all the DP relative relocations, we need to examine the symbol's
95d0f04a
DA
3280 section. If it has no section or if it's a code section, then
3281 "data pointer relative" makes no sense. In that case we don't
3282 adjust the "value", and for 21 bit addil instructions, we change the
3283 source addend register from %dp to %r0. This situation commonly
3284 arises for undefined weak symbols and when a variable's "constness"
30667bf3
AM
3285 is declared differently from the way the variable is defined. For
3286 instance: "extern int foo" with foo defined as "const int foo". */
95d0f04a 3287 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
30667bf3
AM
3288 {
3289 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3290 == (((int) OP_ADDIL << 26) | (27 << 21)))
3291 {
3292 insn &= ~ (0x1f << 21);
30667bf3
AM
3293 }
3294 /* Now try to make things easy for the dynamic linker. */
3295
3296 break;
3297 }
74d1c347 3298 /* Fall thru. */
30667bf3
AM
3299
3300 case R_PARISC_DLTIND21L:
3301 case R_PARISC_DLTIND14R:
3302 case R_PARISC_DLTIND14F:
3303 value -= elf_gp (input_section->output_section->owner);
3304 break;
3305
c46b7515
AM
3306 case R_PARISC_SEGREL32:
3307 if ((sym_sec->flags & SEC_CODE) != 0)
83c81bfe 3308 value -= htab->text_segment_base;
c46b7515 3309 else
83c81bfe 3310 value -= htab->data_segment_base;
c46b7515
AM
3311 break;
3312
30667bf3
AM
3313 default:
3314 break;
3315 }
3316
3317 switch (r_type)
3318 {
3319 case R_PARISC_DIR32:
47d89dba 3320 case R_PARISC_DIR14F:
30667bf3
AM
3321 case R_PARISC_DIR17F:
3322 case R_PARISC_PCREL17C:
3323 case R_PARISC_PCREL14F:
36751eee 3324 case R_PARISC_PCREL32:
30667bf3
AM
3325 case R_PARISC_DPREL14F:
3326 case R_PARISC_PLABEL32:
3327 case R_PARISC_DLTIND14F:
3328 case R_PARISC_SEGBASE:
3329 case R_PARISC_SEGREL32:
3330 r_field = e_fsel;
3331 break;
3332
1bf42538 3333 case R_PARISC_DLTIND21L:
30667bf3 3334 case R_PARISC_PCREL21L:
30667bf3 3335 case R_PARISC_PLABEL21L:
1bf42538
JL
3336 r_field = e_lsel;
3337 break;
3338
3339 case R_PARISC_DIR21L:
3340 case R_PARISC_DPREL21L:
30667bf3
AM
3341 r_field = e_lrsel;
3342 break;
3343
30667bf3 3344 case R_PARISC_PCREL17R:
30667bf3 3345 case R_PARISC_PCREL14R:
30667bf3
AM
3346 case R_PARISC_PLABEL14R:
3347 case R_PARISC_DLTIND14R:
1bf42538
JL
3348 r_field = e_rsel;
3349 break;
3350
3351 case R_PARISC_DIR17R:
3352 case R_PARISC_DIR14R:
3353 case R_PARISC_DPREL14R:
30667bf3
AM
3354 r_field = e_rrsel;
3355 break;
3356
3357 case R_PARISC_PCREL12F:
3358 case R_PARISC_PCREL17F:
3359 case R_PARISC_PCREL22F:
3360 r_field = e_fsel;
3361
3362 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3363 {
3364 max_branch_offset = (1 << (17-1)) << 2;
3365 }
3366 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3367 {
3368 max_branch_offset = (1 << (12-1)) << 2;
3369 }
3370 else
3371 {
3372 max_branch_offset = (1 << (22-1)) << 2;
3373 }
3374
3375 /* sym_sec is NULL on undefined weak syms or when shared on
3376 undefined syms. We've already checked for a stub for the
3377 shared undefined case. */
3378 if (sym_sec == NULL)
3379 break;
3380
3381 /* If the branch is out of reach, then redirect the
3382 call to the local stub for this function. */
3383 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3384 {
875c0872
DA
3385 hsh = hppa_get_stub_entry (input_section, sym_sec,
3386 hh, rela, htab);
3387 if (hsh == NULL)
f09ebc7d 3388 return bfd_reloc_undefined;
30667bf3
AM
3389
3390 /* Munge up the value and addend so that we call the stub
3391 rather than the procedure directly. */
875c0872
DA
3392 value = (hsh->stub_offset
3393 + hsh->stub_sec->output_offset
3394 + hsh->stub_sec->output_section->vma
30667bf3
AM
3395 - location);
3396 addend = -8;
3397 }
3398 break;
3399
3400 /* Something we don't know how to handle. */
3401 default:
3402 return bfd_reloc_notsupported;
3403 }
3404
3405 /* Make sure we can reach the stub. */
3406 if (max_branch_offset != 0
3407 && value + addend + max_branch_offset >= 2*max_branch_offset)
3408 {
3409 (*_bfd_error_handler)
d003868e
AM
3410 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3411 input_bfd,
3412 input_section,
875c0872 3413 offset,
a63e02c7 3414 hsh->bh_root.string);
ce757d15 3415 bfd_set_error (bfd_error_bad_value);
30667bf3
AM
3416 return bfd_reloc_notsupported;
3417 }
3418
3419 val = hppa_field_adjust (value, addend, r_field);
3420
3421 switch (r_type)
3422 {
3423 case R_PARISC_PCREL12F:
3424 case R_PARISC_PCREL17C:
3425 case R_PARISC_PCREL17F:
3426 case R_PARISC_PCREL17R:
3427 case R_PARISC_PCREL22F:
3428 case R_PARISC_DIR17F:
3429 case R_PARISC_DIR17R:
3430 /* This is a branch. Divide the offset by four.
3431 Note that we need to decide whether it's a branch or
3432 otherwise by inspecting the reloc. Inspecting insn won't
3433 work as insn might be from a .word directive. */
3434 val >>= 2;
3435 break;
3436
3437 default:
3438 break;
3439 }
3440
3441 insn = hppa_rebuild_insn (insn, val, r_format);
3442
3443 /* Update the instruction word. */
74d1c347 3444 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
30667bf3
AM
3445 return bfd_reloc_ok;
3446}
3447
30667bf3
AM
3448/* Relocate an HPPA ELF section. */
3449
b34976b6 3450static bfd_boolean
c39a58e6
AM
3451elf32_hppa_relocate_section (bfd *output_bfd,
3452 struct bfd_link_info *info,
3453 bfd *input_bfd,
3454 asection *input_section,
3455 bfd_byte *contents,
3456 Elf_Internal_Rela *relocs,
3457 Elf_Internal_Sym *local_syms,
3458 asection **local_sections)
30667bf3 3459{
30667bf3 3460 bfd_vma *local_got_offsets;
83c81bfe 3461 struct elf32_hppa_link_hash_table *htab;
30667bf3 3462 Elf_Internal_Shdr *symtab_hdr;
875c0872 3463 Elf_Internal_Rela *rela;
30667bf3 3464 Elf_Internal_Rela *relend;
30667bf3 3465
1049f94e 3466 if (info->relocatable)
b34976b6 3467 return TRUE;
f0fe0e16 3468
30667bf3
AM
3469 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3470
83c81bfe 3471 htab = hppa_link_hash_table (info);
74d1c347 3472 local_got_offsets = elf_local_got_offsets (input_bfd);
30667bf3 3473
875c0872 3474 rela = relocs;
30667bf3 3475 relend = relocs + input_section->reloc_count;
875c0872 3476 for (; rela < relend; rela++)
30667bf3
AM
3477 {
3478 unsigned int r_type;
3479 reloc_howto_type *howto;
3480 unsigned int r_symndx;
875c0872 3481 struct elf32_hppa_link_hash_entry *hh;
30667bf3
AM
3482 Elf_Internal_Sym *sym;
3483 asection *sym_sec;
3484 bfd_vma relocation;
875c0872 3485 bfd_reloc_status_type rstatus;
30667bf3 3486 const char *sym_name;
b34976b6
AM
3487 bfd_boolean plabel;
3488 bfd_boolean warned_undef;
30667bf3 3489
875c0872 3490 r_type = ELF32_R_TYPE (rela->r_info);
30667bf3
AM
3491 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3492 {
3493 bfd_set_error (bfd_error_bad_value);
b34976b6 3494 return FALSE;
30667bf3
AM
3495 }
3496 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3497 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3498 continue;
3499
30667bf3 3500 /* This is a final link. */
875c0872
DA
3501 r_symndx = ELF32_R_SYM (rela->r_info);
3502 hh = NULL;
30667bf3
AM
3503 sym = NULL;
3504 sym_sec = NULL;
b34976b6 3505 warned_undef = FALSE;
30667bf3
AM
3506 if (r_symndx < symtab_hdr->sh_info)
3507 {
3508 /* This is a local symbol, h defaults to NULL. */
3509 sym = local_syms + r_symndx;
3510 sym_sec = local_sections[r_symndx];
875c0872 3511 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
30667bf3
AM
3512 }
3513 else
3514 {
875c0872 3515 struct elf_link_hash_entry *eh;
560e09e9 3516 bfd_boolean unresolved_reloc;
b2a8e766 3517 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
560e09e9 3518
875c0872 3519 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
b2a8e766 3520 r_symndx, symtab_hdr, sym_hashes,
875c0872 3521 eh, sym_sec, relocation,
b2a8e766 3522 unresolved_reloc, warned_undef);
560e09e9
NC
3523
3524 if (relocation == 0
875c0872
DA
3525 && eh->root.type != bfd_link_hash_defined
3526 && eh->root.type != bfd_link_hash_defweak
3527 && eh->root.type != bfd_link_hash_undefweak)
4fc8051d 3528 {
59c2e50f 3529 if (info->unresolved_syms_in_objects == RM_IGNORE
875c0872
DA
3530 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3531 && eh->type == STT_PARISC_MILLI)
560e09e9
NC
3532 {
3533 if (! info->callbacks->undefined_symbol
875c0872
DA
3534 (info, eh->root.root.string, input_bfd,
3535 input_section, rela->r_offset, FALSE))
560e09e9
NC
3536 return FALSE;
3537 warned_undef = TRUE;
3538 }
30667bf3 3539 }
875c0872 3540 hh = hppa_elf_hash_entry (eh);
30667bf3
AM
3541 }
3542
3543 /* Do any required modifications to the relocation value, and
25f72752
AM
3544 determine what types of dynamic info we need to output, if
3545 any. */
74d1c347 3546 plabel = 0;
30667bf3
AM
3547 switch (r_type)
3548 {
3549 case R_PARISC_DLTIND14F:
3550 case R_PARISC_DLTIND14R:
3551 case R_PARISC_DLTIND21L:
ce757d15
AM
3552 {
3553 bfd_vma off;
b34976b6 3554 bfd_boolean do_got = 0;
ce757d15
AM
3555
3556 /* Relocation is to the entry for this symbol in the
3557 global offset table. */
875c0872 3558 if (hh != NULL)
ce757d15 3559 {
b34976b6 3560 bfd_boolean dyn;
ce757d15 3561
a63e02c7
DA
3562 off = hh->eh.got.offset;
3563 dyn = htab->etab.dynamic_sections_created;
c152c796 3564 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
a63e02c7 3565 &hh->eh))
ce757d15
AM
3566 {
3567 /* If we aren't going to call finish_dynamic_symbol,
3568 then we need to handle initialisation of the .got
3569 entry and create needed relocs here. Since the
3570 offset must always be a multiple of 4, we use the
3571 least significant bit to record whether we have
3572 initialised it already. */
3573 if ((off & 1) != 0)
3574 off &= ~1;
3575 else
3576 {
a63e02c7 3577 hh->eh.got.offset |= 1;
ce757d15
AM
3578 do_got = 1;
3579 }
3580 }
3581 }
3582 else
3583 {
3584 /* Local symbol case. */
3585 if (local_got_offsets == NULL)
3586 abort ();
3587
3588 off = local_got_offsets[r_symndx];
3589
3590 /* The offset must always be a multiple of 4. We use
3591 the least significant bit to record whether we have
3592 already generated the necessary reloc. */
3593 if ((off & 1) != 0)
3594 off &= ~1;
3595 else
3596 {
3597 local_got_offsets[r_symndx] |= 1;
3598 do_got = 1;
3599 }
3600 }
68fb2e56 3601
ce757d15
AM
3602 if (do_got)
3603 {
3604 if (info->shared)
3605 {
3606 /* Output a dynamic relocation for this GOT entry.
3607 In this case it is relative to the base of the
3608 object because the symbol index is zero. */
3609 Elf_Internal_Rela outrel;
947216bf 3610 bfd_byte *loc;
875c0872 3611 asection *sec = htab->srelgot;
ce757d15
AM
3612
3613 outrel.r_offset = (off
3614 + htab->sgot->output_offset
3615 + htab->sgot->output_section->vma);
3616 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3617 outrel.r_addend = relocation;
875c0872
DA
3618 loc = sec->contents;
3619 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
ce757d15
AM
3620 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3621 }
3622 else
30667bf3 3623 bfd_put_32 (output_bfd, relocation,
83c81bfe 3624 htab->sgot->contents + off);
ce757d15 3625 }
30667bf3 3626
ce757d15
AM
3627 if (off >= (bfd_vma) -2)
3628 abort ();
30667bf3 3629
ce757d15
AM
3630 /* Add the base of the GOT to the relocation value. */
3631 relocation = (off
3632 + htab->sgot->output_offset
3633 + htab->sgot->output_section->vma);
3634 }
30667bf3 3635 break;
252b5132 3636
c46b7515
AM
3637 case R_PARISC_SEGREL32:
3638 /* If this is the first SEGREL relocation, then initialize
3639 the segment base values. */
83c81bfe
AM
3640 if (htab->text_segment_base == (bfd_vma) -1)
3641 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
c46b7515
AM
3642 break;
3643
30667bf3
AM
3644 case R_PARISC_PLABEL14R:
3645 case R_PARISC_PLABEL21L:
3646 case R_PARISC_PLABEL32:
a63e02c7 3647 if (htab->etab.dynamic_sections_created)
252b5132 3648 {
ce757d15 3649 bfd_vma off;
b34976b6 3650 bfd_boolean do_plt = 0;
74d1c347
AM
3651 /* If we have a global symbol with a PLT slot, then
3652 redirect this relocation to it. */
875c0872 3653 if (hh != NULL)
74d1c347 3654 {
a63e02c7 3655 off = hh->eh.plt.offset;
c152c796 3656 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared,
a63e02c7 3657 &hh->eh))
8dea1268
AM
3658 {
3659 /* In a non-shared link, adjust_dynamic_symbols
3660 isn't called for symbols forced local. We
dc810e39 3661 need to write out the plt entry here. */
8dea1268
AM
3662 if ((off & 1) != 0)
3663 off &= ~1;
3664 else
3665 {
a63e02c7 3666 hh->eh.plt.offset |= 1;
ce757d15 3667 do_plt = 1;
8dea1268
AM
3668 }
3669 }
74d1c347
AM
3670 }
3671 else
3672 {
68fb2e56
AM
3673 bfd_vma *local_plt_offsets;
3674
3675 if (local_got_offsets == NULL)
3676 abort ();
74d1c347 3677
68fb2e56
AM
3678 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3679 off = local_plt_offsets[r_symndx];
74d1c347
AM
3680
3681 /* As for the local .got entry case, we use the last
3682 bit to record whether we've already initialised
3683 this local .plt entry. */
3684 if ((off & 1) != 0)
3685 off &= ~1;
ce757d15
AM
3686 else
3687 {
3688 local_plt_offsets[r_symndx] |= 1;
3689 do_plt = 1;
3690 }
3691 }
3692
3693 if (do_plt)
3694 {
3695 if (info->shared)
3696 {
3697 /* Output a dynamic IPLT relocation for this
3698 PLT entry. */
3699 Elf_Internal_Rela outrel;
947216bf
AM
3700 bfd_byte *loc;
3701 asection *s = htab->srelplt;
ce757d15
AM
3702
3703 outrel.r_offset = (off
3704 + htab->splt->output_offset
3705 + htab->splt->output_section->vma);
3706 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3707 outrel.r_addend = relocation;
947216bf
AM
3708 loc = s->contents;
3709 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
ce757d15
AM
3710 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3711 }
74d1c347
AM
3712 else
3713 {
3714 bfd_put_32 (output_bfd,
3715 relocation,
83c81bfe 3716 htab->splt->contents + off);
74d1c347 3717 bfd_put_32 (output_bfd,
83c81bfe
AM
3718 elf_gp (htab->splt->output_section->owner),
3719 htab->splt->contents + off + 4);
74d1c347
AM
3720 }
3721 }
3722
68fb2e56 3723 if (off >= (bfd_vma) -2)
49e9d0d3 3724 abort ();
74d1c347
AM
3725
3726 /* PLABELs contain function pointers. Relocation is to
3727 the entry for the function in the .plt. The magic +2
3728 offset signals to $$dyncall that the function pointer
3729 is in the .plt and thus has a gp pointer too.
3730 Exception: Undefined PLABELs should have a value of
3731 zero. */
875c0872 3732 if (hh == NULL
a63e02c7
DA
3733 || (hh->eh.root.type != bfd_link_hash_undefweak
3734 && hh->eh.root.type != bfd_link_hash_undefined))
74d1c347
AM
3735 {
3736 relocation = (off
83c81bfe
AM
3737 + htab->splt->output_offset
3738 + htab->splt->output_section->vma
74d1c347
AM
3739 + 2);
3740 }
3741 plabel = 1;
30667bf3
AM
3742 }
3743 /* Fall through and possibly emit a dynamic relocation. */
3744
3745 case R_PARISC_DIR17F:
3746 case R_PARISC_DIR17R:
47d89dba 3747 case R_PARISC_DIR14F:
30667bf3
AM
3748 case R_PARISC_DIR14R:
3749 case R_PARISC_DIR21L:
3750 case R_PARISC_DPREL14F:
3751 case R_PARISC_DPREL14R:
3752 case R_PARISC_DPREL21L:
3753 case R_PARISC_DIR32:
ec338859
AM
3754 /* r_symndx will be zero only for relocs against symbols
3755 from removed linkonce sections, or sections discarded by
3756 a linker script. */
3757 if (r_symndx == 0
3758 || (input_section->flags & SEC_ALLOC) == 0)
3759 break;
3760
30667bf3 3761 /* The reloc types handled here and this conditional
56882138 3762 expression must match the code in ..check_relocs and
ec338859 3763 allocate_dynrelocs. ie. We need exactly the same condition
56882138
AM
3764 as in ..check_relocs, with some extra conditions (dynindx
3765 test in this case) to cater for relocs removed by
ec338859 3766 allocate_dynrelocs. If you squint, the non-shared test
56882138
AM
3767 here does indeed match the one in ..check_relocs, the
3768 difference being that here we test DEF_DYNAMIC as well as
3769 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3770 which is why we can't use just that test here.
3771 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3772 there all files have not been loaded. */
446f2863 3773 if ((info->shared
875c0872 3774 && (hh == NULL
a63e02c7
DA
3775 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3776 || hh->eh.root.type != bfd_link_hash_undefweak)
446f2863 3777 && (IS_ABSOLUTE_RELOC (r_type)
a63e02c7 3778 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
446f2863 3779 || (!info->shared
875c0872 3780 && hh != NULL
a63e02c7
DA
3781 && hh->eh.dynindx != -1
3782 && !hh->eh.non_got_ref
4fc8051d 3783 && ((ELIMINATE_COPY_RELOCS
a63e02c7
DA
3784 && hh->eh.def_dynamic
3785 && !hh->eh.def_regular)
3786 || hh->eh.root.type == bfd_link_hash_undefweak
3787 || hh->eh.root.type == bfd_link_hash_undefined)))
30667bf3
AM
3788 {
3789 Elf_Internal_Rela outrel;
b34976b6 3790 bfd_boolean skip;
98ceb8ce 3791 asection *sreloc;
947216bf 3792 bfd_byte *loc;
252b5132 3793
30667bf3
AM
3794 /* When generating a shared object, these relocations
3795 are copied into the output file to be resolved at run
3796 time. */
252b5132 3797
875c0872 3798 outrel.r_addend = rela->r_addend;
c629eae0
JJ
3799 outrel.r_offset =
3800 _bfd_elf_section_offset (output_bfd, info, input_section,
875c0872 3801 rela->r_offset);
0bb2d96a
JJ
3802 skip = (outrel.r_offset == (bfd_vma) -1
3803 || outrel.r_offset == (bfd_vma) -2);
30667bf3
AM
3804 outrel.r_offset += (input_section->output_offset
3805 + input_section->output_section->vma);
875c0872 3806
30667bf3 3807 if (skip)
252b5132 3808 {
30667bf3 3809 memset (&outrel, 0, sizeof (outrel));
252b5132 3810 }
875c0872 3811 else if (hh != NULL
a63e02c7 3812 && hh->eh.dynindx != -1
74d1c347 3813 && (plabel
446f2863
AM
3814 || !IS_ABSOLUTE_RELOC (r_type)
3815 || !info->shared
74d1c347 3816 || !info->symbolic
a63e02c7 3817 || !hh->eh.def_regular))
252b5132 3818 {
a63e02c7 3819 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
30667bf3
AM
3820 }
3821 else /* It's a local symbol, or one marked to become local. */
3822 {
3823 int indx = 0;
edd21aca 3824
30667bf3
AM
3825 /* Add the absolute offset of the symbol. */
3826 outrel.r_addend += relocation;
edd21aca 3827
74d1c347
AM
3828 /* Global plabels need to be processed by the
3829 dynamic linker so that functions have at most one
3830 fptr. For this reason, we need to differentiate
3831 between global and local plabels, which we do by
3832 providing the function symbol for a global plabel
3833 reloc, and no symbol for local plabels. */
3834 if (! plabel
3835 && sym_sec != NULL
30667bf3
AM
3836 && sym_sec->output_section != NULL
3837 && ! bfd_is_abs_section (sym_sec))
252b5132 3838 {
4b71bec0
DA
3839 /* Skip this relocation if the output section has
3840 been discarded. */
3841 if (bfd_is_abs_section (sym_sec->output_section))
3842 break;
3843
30667bf3
AM
3844 indx = elf_section_data (sym_sec->output_section)->dynindx;
3845 /* We are turning this relocation into one
3846 against a section symbol, so subtract out the
3847 output section's address but not the offset
3848 of the input section in the output section. */
3849 outrel.r_addend -= sym_sec->output_section->vma;
252b5132 3850 }
252b5132 3851
30667bf3
AM
3852 outrel.r_info = ELF32_R_INFO (indx, r_type);
3853 }
98ceb8ce
AM
3854 sreloc = elf_section_data (input_section)->sreloc;
3855 if (sreloc == NULL)
3856 abort ();
3857
947216bf
AM
3858 loc = sreloc->contents;
3859 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
98ceb8ce 3860 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
30667bf3
AM
3861 }
3862 break;
edd21aca 3863
30667bf3
AM
3864 default:
3865 break;
3866 }
252b5132 3867
875c0872
DA
3868 rstatus = final_link_relocate (input_section, contents, rela, relocation,
3869 htab, sym_sec, hh, info);
252b5132 3870
875c0872 3871 if (rstatus == bfd_reloc_ok)
30667bf3 3872 continue;
252b5132 3873
875c0872 3874 if (hh != NULL)
a63e02c7 3875 sym_name = hh->eh.root.root.string;
30667bf3
AM
3876 else
3877 {
3878 sym_name = bfd_elf_string_from_elf_section (input_bfd,
3879 symtab_hdr->sh_link,
3880 sym->st_name);
3881 if (sym_name == NULL)
b34976b6 3882 return FALSE;
30667bf3
AM
3883 if (*sym_name == '\0')
3884 sym_name = bfd_section_name (input_bfd, sym_sec);
3885 }
edd21aca 3886
30667bf3 3887 howto = elf_hppa_howto_table + r_type;
252b5132 3888
875c0872 3889 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
30667bf3 3890 {
875c0872 3891 if (rstatus == bfd_reloc_notsupported || !warned_undef)
f09ebc7d
AM
3892 {
3893 (*_bfd_error_handler)
d003868e
AM
3894 (_("%B(%A+0x%lx): cannot handle %s for %s"),
3895 input_bfd,
3896 input_section,
875c0872 3897 (long) rela->r_offset,
f09ebc7d
AM
3898 howto->name,
3899 sym_name);
3900 bfd_set_error (bfd_error_bad_value);
b34976b6 3901 return FALSE;
f09ebc7d 3902 }
30667bf3
AM
3903 }
3904 else
3905 {
3906 if (!((*info->callbacks->reloc_overflow)
a63e02c7 3907 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
875c0872 3908 (bfd_vma) 0, input_bfd, input_section, rela->r_offset)))
b34976b6 3909 return FALSE;
30667bf3
AM
3910 }
3911 }
edd21aca 3912
b34976b6 3913 return TRUE;
30667bf3 3914}
252b5132 3915
30667bf3
AM
3916/* Finish up dynamic symbol handling. We set the contents of various
3917 dynamic sections here. */
252b5132 3918
b34976b6 3919static bfd_boolean
c39a58e6
AM
3920elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
3921 struct bfd_link_info *info,
875c0872 3922 struct elf_link_hash_entry *eh,
c39a58e6 3923 Elf_Internal_Sym *sym)
30667bf3 3924{
83c81bfe 3925 struct elf32_hppa_link_hash_table *htab;
875c0872 3926 Elf_Internal_Rela rela;
a252afa4 3927 bfd_byte *loc;
edd21aca 3928
83c81bfe 3929 htab = hppa_link_hash_table (info);
30667bf3 3930
875c0872 3931 if (eh->plt.offset != (bfd_vma) -1)
30667bf3
AM
3932 {
3933 bfd_vma value;
30667bf3 3934
875c0872 3935 if (eh->plt.offset & 1)
8dea1268
AM
3936 abort ();
3937
30667bf3
AM
3938 /* This symbol has an entry in the procedure linkage table. Set
3939 it up.
3940
3941 The format of a plt entry is
74d1c347
AM
3942 <funcaddr>
3943 <__gp>
47d89dba 3944 */
30667bf3 3945 value = 0;
875c0872
DA
3946 if (eh->root.type == bfd_link_hash_defined
3947 || eh->root.type == bfd_link_hash_defweak)
30667bf3 3948 {
875c0872
DA
3949 value = eh->root.u.def.value;
3950 if (eh->root.u.def.section->output_section != NULL)
3951 value += (eh->root.u.def.section->output_offset
3952 + eh->root.u.def.section->output_section->vma);
252b5132 3953 }
edd21aca 3954
a252afa4 3955 /* Create a dynamic IPLT relocation for this entry. */
875c0872 3956 rela.r_offset = (eh->plt.offset
a252afa4
DA
3957 + htab->splt->output_offset
3958 + htab->splt->output_section->vma);
875c0872 3959 if (eh->dynindx != -1)
30667bf3 3960 {
875c0872
DA
3961 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
3962 rela.r_addend = 0;
30667bf3 3963 }
ce757d15 3964 else
47d89dba 3965 {
a252afa4
DA
3966 /* This symbol has been marked to become local, and is
3967 used by a plabel so must be kept in the .plt. */
875c0872
DA
3968 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3969 rela.r_addend = value;
47d89dba
AM
3970 }
3971
a252afa4
DA
3972 loc = htab->srelplt->contents;
3973 loc += htab->srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
875c0872 3974 bfd_elf32_swap_reloca_out (htab->splt->output_section->owner, &rela, loc);
a252afa4 3975
875c0872 3976 if (!eh->def_regular)
30667bf3
AM
3977 {
3978 /* Mark the symbol as undefined, rather than as defined in
3979 the .plt section. Leave the value alone. */
3980 sym->st_shndx = SHN_UNDEF;
3981 }
3982 }
edd21aca 3983
875c0872 3984 if (eh->got.offset != (bfd_vma) -1)
30667bf3 3985 {
30667bf3
AM
3986 /* This symbol has an entry in the global offset table. Set it
3987 up. */
3988
875c0872 3989 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
83c81bfe
AM
3990 + htab->sgot->output_offset
3991 + htab->sgot->output_section->vma);
30667bf3 3992
4dc86686
AM
3993 /* If this is a -Bsymbolic link and the symbol is defined
3994 locally or was forced to be local because of a version file,
3995 we just want to emit a RELATIVE reloc. The entry in the
3996 global offset table will already have been initialized in the
3997 relocate_section function. */
3998 if (info->shared
875c0872
DA
3999 && (info->symbolic || eh->dynindx == -1)
4000 && eh->def_regular)
30667bf3 4001 {
875c0872
DA
4002 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4003 rela.r_addend = (eh->root.u.def.value
4004 + eh->root.u.def.section->output_offset
4005 + eh->root.u.def.section->output_section->vma);
30667bf3
AM
4006 }
4007 else
4008 {
875c0872 4009 if ((eh->got.offset & 1) != 0)
49e9d0d3 4010 abort ();
875c0872
DA
4011
4012 bfd_put_32 (output_bfd, 0, htab->sgot->contents + (eh->got.offset & ~1));
4013 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4014 rela.r_addend = 0;
30667bf3 4015 }
edd21aca 4016
947216bf
AM
4017 loc = htab->srelgot->contents;
4018 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
875c0872 4019 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
30667bf3 4020 }
edd21aca 4021
875c0872 4022 if (eh->needs_copy)
30667bf3 4023 {
875c0872 4024 asection *sec;
30667bf3
AM
4025
4026 /* This symbol needs a copy reloc. Set it up. */
4027
875c0872
DA
4028 if (! (eh->dynindx != -1
4029 && (eh->root.type == bfd_link_hash_defined
4030 || eh->root.type == bfd_link_hash_defweak)))
49e9d0d3 4031 abort ();
30667bf3 4032
875c0872 4033 sec = htab->srelbss;
30667bf3 4034
875c0872
DA
4035 rela.r_offset = (eh->root.u.def.value
4036 + eh->root.u.def.section->output_offset
4037 + eh->root.u.def.section->output_section->vma);
4038 rela.r_addend = 0;
4039 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4040 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4041 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
30667bf3
AM
4042 }
4043
4044 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
875c0872
DA
4045 if (eh->root.root.string[0] == '_'
4046 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
4047 || strcmp (eh->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
30667bf3
AM
4048 {
4049 sym->st_shndx = SHN_ABS;
4050 }
4051
b34976b6 4052 return TRUE;
30667bf3
AM
4053}
4054
98ceb8ce
AM
4055/* Used to decide how to sort relocs in an optimal manner for the
4056 dynamic linker, before writing them out. */
4057
4058static enum elf_reloc_type_class
c39a58e6 4059elf32_hppa_reloc_type_class (const Elf_Internal_Rela *rela)
98ceb8ce
AM
4060{
4061 if (ELF32_R_SYM (rela->r_info) == 0)
4062 return reloc_class_relative;
4063
4064 switch ((int) ELF32_R_TYPE (rela->r_info))
4065 {
4066 case R_PARISC_IPLT:
4067 return reloc_class_plt;
4068 case R_PARISC_COPY:
4069 return reloc_class_copy;
4070 default:
4071 return reloc_class_normal;
4072 }
4073}
4074
30667bf3
AM
4075/* Finish up the dynamic sections. */
4076
b34976b6 4077static bfd_boolean
c39a58e6
AM
4078elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4079 struct bfd_link_info *info)
30667bf3
AM
4080{
4081 bfd *dynobj;
83c81bfe 4082 struct elf32_hppa_link_hash_table *htab;
30667bf3
AM
4083 asection *sdyn;
4084
83c81bfe 4085 htab = hppa_link_hash_table (info);
a63e02c7 4086 dynobj = htab->etab.dynobj;
30667bf3
AM
4087
4088 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4089
a63e02c7 4090 if (htab->etab.dynamic_sections_created)
30667bf3
AM
4091 {
4092 Elf32_External_Dyn *dyncon, *dynconend;
4093
49e9d0d3
AM
4094 if (sdyn == NULL)
4095 abort ();
30667bf3
AM
4096
4097 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4098 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
30667bf3 4099 for (; dyncon < dynconend; dyncon++)
edd21aca 4100 {
30667bf3
AM
4101 Elf_Internal_Dyn dyn;
4102 asection *s;
4103
4104 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4105
4106 switch (dyn.d_tag)
4107 {
4108 default:
3ac8354b 4109 continue;
30667bf3
AM
4110
4111 case DT_PLTGOT:
4112 /* Use PLTGOT to set the GOT register. */
4113 dyn.d_un.d_ptr = elf_gp (output_bfd);
30667bf3
AM
4114 break;
4115
4116 case DT_JMPREL:
83c81bfe 4117 s = htab->srelplt;
30667bf3 4118 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
30667bf3
AM
4119 break;
4120
4121 case DT_PLTRELSZ:
83c81bfe 4122 s = htab->srelplt;
eea6121a 4123 dyn.d_un.d_val = s->size;
30667bf3 4124 break;
4e12ff7f
AM
4125
4126 case DT_RELASZ:
4127 /* Don't count procedure linkage table relocs in the
4128 overall reloc count. */
6348e046
AM
4129 s = htab->srelplt;
4130 if (s == NULL)
4131 continue;
eea6121a 4132 dyn.d_un.d_val -= s->size;
6348e046
AM
4133 break;
4134
4135 case DT_RELA:
4136 /* We may not be using the standard ELF linker script.
4137 If .rela.plt is the first .rela section, we adjust
4138 DT_RELA to not include it. */
4139 s = htab->srelplt;
4140 if (s == NULL)
4141 continue;
4142 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4143 continue;
eea6121a 4144 dyn.d_un.d_ptr += s->size;
4e12ff7f 4145 break;
30667bf3 4146 }
3ac8354b
AM
4147
4148 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
edd21aca 4149 }
252b5132 4150 }
edd21aca 4151
eea6121a 4152 if (htab->sgot != NULL && htab->sgot->size != 0)
30667bf3 4153 {
74d1c347
AM
4154 /* Fill in the first entry in the global offset table.
4155 We use it to point to our dynamic section, if we have one. */
30667bf3 4156 bfd_put_32 (output_bfd,
c39a58e6 4157 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
83c81bfe 4158 htab->sgot->contents);
30667bf3 4159
74d1c347 4160 /* The second entry is reserved for use by the dynamic linker. */
83c81bfe 4161 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
74d1c347 4162
30667bf3 4163 /* Set .got entry size. */
83c81bfe 4164 elf_section_data (htab->sgot->output_section)
74d1c347 4165 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
30667bf3
AM
4166 }
4167
eea6121a 4168 if (htab->splt != NULL && htab->splt->size != 0)
47d89dba
AM
4169 {
4170 /* Set plt entry size. */
83c81bfe 4171 elf_section_data (htab->splt->output_section)
47d89dba
AM
4172 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
4173
83c81bfe 4174 if (htab->need_plt_stub)
47d89dba
AM
4175 {
4176 /* Set up the .plt stub. */
83c81bfe 4177 memcpy (htab->splt->contents
eea6121a 4178 + htab->splt->size - sizeof (plt_stub),
47d89dba
AM
4179 plt_stub, sizeof (plt_stub));
4180
83c81bfe
AM
4181 if ((htab->splt->output_offset
4182 + htab->splt->output_section->vma
eea6121a 4183 + htab->splt->size)
83c81bfe
AM
4184 != (htab->sgot->output_offset
4185 + htab->sgot->output_section->vma))
47d89dba
AM
4186 {
4187 (*_bfd_error_handler)
4188 (_(".got section not immediately after .plt section"));
b34976b6 4189 return FALSE;
47d89dba
AM
4190 }
4191 }
4192 }
30667bf3 4193
b34976b6 4194 return TRUE;
30667bf3 4195}
252b5132 4196
d952f17a
AM
4197/* Tweak the OSABI field of the elf header. */
4198
4199static void
c39a58e6
AM
4200elf32_hppa_post_process_headers (bfd *abfd,
4201 struct bfd_link_info *info ATTRIBUTE_UNUSED)
d952f17a
AM
4202{
4203 Elf_Internal_Ehdr * i_ehdrp;
4204
4205 i_ehdrp = elf_elfheader (abfd);
4206
4207 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
4208 {
4209 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
4210 }
225247f0
JT
4211 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
4212 {
4213 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_NETBSD;
4214 }
d952f17a
AM
4215 else
4216 {
4217 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4218 }
4219}
4220
30667bf3
AM
4221/* Called when writing out an object file to decide the type of a
4222 symbol. */
4223static int
c39a58e6 4224elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
30667bf3
AM
4225{
4226 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4227 return STT_PARISC_MILLI;
4228 else
4229 return type;
252b5132
RH
4230}
4231
4232/* Misc BFD support code. */
30667bf3
AM
4233#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4234#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4235#define elf_info_to_howto elf_hppa_info_to_howto
4236#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
252b5132 4237
252b5132 4238/* Stuff for the BFD linker. */
c46b7515 4239#define bfd_elf32_bfd_final_link elf32_hppa_final_link
30667bf3 4240#define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
e2d34d7d 4241#define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free
30667bf3 4242#define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
ebe50bae 4243#define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
30667bf3
AM
4244#define elf_backend_check_relocs elf32_hppa_check_relocs
4245#define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4246#define elf_backend_fake_sections elf_hppa_fake_sections
4247#define elf_backend_relocate_section elf32_hppa_relocate_section
74d1c347 4248#define elf_backend_hide_symbol elf32_hppa_hide_symbol
30667bf3
AM
4249#define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4250#define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4251#define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4252#define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4253#define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
edfc032f
AM
4254#define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4255#define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
30667bf3
AM
4256#define elf_backend_object_p elf32_hppa_object_p
4257#define elf_backend_final_write_processing elf_hppa_final_write_processing
d952f17a 4258#define elf_backend_post_process_headers elf32_hppa_post_process_headers
30667bf3 4259#define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
98ceb8ce 4260#define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
8a696751 4261#define elf_backend_action_discarded elf_hppa_action_discarded
30667bf3
AM
4262
4263#define elf_backend_can_gc_sections 1
51b64d56 4264#define elf_backend_can_refcount 1
30667bf3
AM
4265#define elf_backend_plt_alignment 2
4266#define elf_backend_want_got_plt 0
4267#define elf_backend_plt_readonly 0
4268#define elf_backend_want_plt_sym 0
74d1c347 4269#define elf_backend_got_header_size 8
f0fe0e16 4270#define elf_backend_rela_normal 1
252b5132
RH
4271
4272#define TARGET_BIG_SYM bfd_elf32_hppa_vec
4273#define TARGET_BIG_NAME "elf32-hppa"
4274#define ELF_ARCH bfd_arch_hppa
4275#define ELF_MACHINE_CODE EM_PARISC
4276#define ELF_MAXPAGESIZE 0x1000
4277
4278#include "elf32-target.h"
d952f17a
AM
4279
4280#undef TARGET_BIG_SYM
4281#define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4282#undef TARGET_BIG_NAME
4283#define TARGET_BIG_NAME "elf32-hppa-linux"
4284
4285#define INCLUDED_TARGET_FILE 1
4286#include "elf32-target.h"
225247f0
JT
4287
4288#undef TARGET_BIG_SYM
4289#define TARGET_BIG_SYM bfd_elf32_hppa_nbsd_vec
4290#undef TARGET_BIG_NAME
4291#define TARGET_BIG_NAME "elf32-hppa-netbsd"
4292
4293#include "elf32-target.h"
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