cbe42cfde9f0e7d82b3337b40e0a552a11a42eb6
[binutils-gdb.git] / bfd / elf32-hppa.c
1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
3
4 Original code by
5 Center for Software Science
6 Department of Computer Science
7 University of Utah
8 Largely rewritten by Alan Modra <alan@linuxcare.com.au>
9 Naming cleanup by Carlos O'Donell <carlos@systemhalted.org>
10 TLS support written by Randolph Chung <tausq@debian.org>
11
12 This file is part of BFD, the Binary File Descriptor library.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
27 MA 02110-1301, USA. */
28
29 #include "sysdep.h"
30 #include "bfd.h"
31 #include "libbfd.h"
32 #include "elf-bfd.h"
33 #include "elf/hppa.h"
34 #include "libhppa.h"
35 #include "elf32-hppa.h"
36 #define ARCH_SIZE 32
37 #include "elf32-hppa.h"
38 #include "elf-hppa.h"
39
40 /* In order to gain some understanding of code in this file without
41 knowing all the intricate details of the linker, note the
42 following:
43
44 Functions named elf32_hppa_* are called by external routines, other
45 functions are only called locally. elf32_hppa_* functions appear
46 in this file more or less in the order in which they are called
47 from external routines. eg. elf32_hppa_check_relocs is called
48 early in the link process, elf32_hppa_finish_dynamic_sections is
49 one of the last functions. */
50
51 /* We use two hash tables to hold information for linking PA ELF objects.
52
53 The first is the elf32_hppa_link_hash_table which is derived
54 from the standard ELF linker hash table. We use this as a place to
55 attach other hash tables and static information.
56
57 The second is the stub hash table which is derived from the
58 base BFD hash table. The stub hash table holds the information
59 necessary to build the linker stubs during a link.
60
61 There are a number of different stubs generated by the linker.
62
63 Long branch stub:
64 : ldil LR'X,%r1
65 : be,n RR'X(%sr4,%r1)
66
67 PIC long branch stub:
68 : b,l .+8,%r1
69 : addil LR'X - ($PIC_pcrel$0 - 4),%r1
70 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
71
72 Import stub to call shared library routine from normal object file
73 (single sub-space version)
74 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
75 : ldw RR'lt_ptr+ltoff(%r1),%r21
76 : bv %r0(%r21)
77 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
78
79 Import stub to call shared library routine from shared library
80 (single sub-space version)
81 : addil LR'ltoff,%r19 ; get procedure entry point
82 : ldw RR'ltoff(%r1),%r21
83 : bv %r0(%r21)
84 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
85
86 Import stub to call shared library routine from normal object file
87 (multiple sub-space support)
88 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
89 : ldw RR'lt_ptr+ltoff(%r1),%r21
90 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
91 : ldsid (%r21),%r1
92 : mtsp %r1,%sr0
93 : be 0(%sr0,%r21) ; branch to target
94 : stw %rp,-24(%sp) ; save rp
95
96 Import stub to call shared library routine from shared library
97 (multiple sub-space support)
98 : addil LR'ltoff,%r19 ; get procedure entry point
99 : ldw RR'ltoff(%r1),%r21
100 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
101 : ldsid (%r21),%r1
102 : mtsp %r1,%sr0
103 : be 0(%sr0,%r21) ; branch to target
104 : stw %rp,-24(%sp) ; save rp
105
106 Export stub to return from shared lib routine (multiple sub-space support)
107 One of these is created for each exported procedure in a shared
108 library (and stored in the shared lib). Shared lib routines are
109 called via the first instruction in the export stub so that we can
110 do an inter-space return. Not required for single sub-space.
111 : bl,n X,%rp ; trap the return
112 : nop
113 : ldw -24(%sp),%rp ; restore the original rp
114 : ldsid (%rp),%r1
115 : mtsp %r1,%sr0
116 : be,n 0(%sr0,%rp) ; inter-space return. */
117
118
119 /* Variable names follow a coding style.
120 Please follow this (Apps Hungarian) style:
121
122 Structure/Variable Prefix
123 elf_link_hash_table "etab"
124 elf_link_hash_entry "eh"
125
126 elf32_hppa_link_hash_table "htab"
127 elf32_hppa_link_hash_entry "hh"
128
129 bfd_hash_table "btab"
130 bfd_hash_entry "bh"
131
132 bfd_hash_table containing stubs "bstab"
133 elf32_hppa_stub_hash_entry "hsh"
134
135 elf32_hppa_dyn_reloc_entry "hdh"
136
137 Always remember to use GNU Coding Style. */
138
139 #define PLT_ENTRY_SIZE 8
140 #define GOT_ENTRY_SIZE 4
141 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
142
143 static const bfd_byte plt_stub[] =
144 {
145 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
146 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
147 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
148 #define PLT_STUB_ENTRY (3*4)
149 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
150 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
151 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
152 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
153 };
154
155 /* Section name for stubs is the associated section name plus this
156 string. */
157 #define STUB_SUFFIX ".stub"
158
159 /* We don't need to copy certain PC- or GP-relative dynamic relocs
160 into a shared object's dynamic section. All the relocs of the
161 limited class we are interested in, are absolute. */
162 #ifndef RELATIVE_DYNRELOCS
163 #define RELATIVE_DYNRELOCS 0
164 #define IS_ABSOLUTE_RELOC(r_type) 1
165 #endif
166
167 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
168 copying dynamic variables from a shared lib into an app's dynbss
169 section, and instead use a dynamic relocation to point into the
170 shared lib. */
171 #define ELIMINATE_COPY_RELOCS 1
172
173 enum elf32_hppa_stub_type
174 {
175 hppa_stub_long_branch,
176 hppa_stub_long_branch_shared,
177 hppa_stub_import,
178 hppa_stub_import_shared,
179 hppa_stub_export,
180 hppa_stub_none
181 };
182
183 struct elf32_hppa_stub_hash_entry
184 {
185 /* Base hash table entry structure. */
186 struct bfd_hash_entry bh_root;
187
188 /* The stub section. */
189 asection *stub_sec;
190
191 /* Offset within stub_sec of the beginning of this stub. */
192 bfd_vma stub_offset;
193
194 /* Given the symbol's value and its section we can determine its final
195 value when building the stubs (so the stub knows where to jump. */
196 bfd_vma target_value;
197 asection *target_section;
198
199 enum elf32_hppa_stub_type stub_type;
200
201 /* The symbol table entry, if any, that this was derived from. */
202 struct elf32_hppa_link_hash_entry *hh;
203
204 /* Where this stub is being called from, or, in the case of combined
205 stub sections, the first input section in the group. */
206 asection *id_sec;
207 };
208
209 struct elf32_hppa_link_hash_entry
210 {
211 struct elf_link_hash_entry eh;
212
213 /* A pointer to the most recently used stub hash entry against this
214 symbol. */
215 struct elf32_hppa_stub_hash_entry *hsh_cache;
216
217 /* Used to count relocations for delayed sizing of relocation
218 sections. */
219 struct elf32_hppa_dyn_reloc_entry
220 {
221 /* Next relocation in the chain. */
222 struct elf32_hppa_dyn_reloc_entry *hdh_next;
223
224 /* The input section of the reloc. */
225 asection *sec;
226
227 /* Number of relocs copied in this section. */
228 bfd_size_type count;
229
230 #if RELATIVE_DYNRELOCS
231 /* Number of relative relocs copied for the input section. */
232 bfd_size_type relative_count;
233 #endif
234 } *dyn_relocs;
235
236 enum
237 {
238 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_GD = 2, GOT_TLS_LDM = 4, GOT_TLS_IE = 8
239 } tls_type;
240
241 /* Set if this symbol is used by a plabel reloc. */
242 unsigned int plabel:1;
243 };
244
245 struct elf32_hppa_link_hash_table
246 {
247 /* The main hash table. */
248 struct elf_link_hash_table etab;
249
250 /* The stub hash table. */
251 struct bfd_hash_table bstab;
252
253 /* Linker stub bfd. */
254 bfd *stub_bfd;
255
256 /* Linker call-backs. */
257 asection * (*add_stub_section) (const char *, asection *);
258 void (*layout_sections_again) (void);
259
260 /* Array to keep track of which stub sections have been created, and
261 information on stub grouping. */
262 struct map_stub
263 {
264 /* This is the section to which stubs in the group will be
265 attached. */
266 asection *link_sec;
267 /* The stub section. */
268 asection *stub_sec;
269 } *stub_group;
270
271 /* Assorted information used by elf32_hppa_size_stubs. */
272 unsigned int bfd_count;
273 unsigned int top_index;
274 asection **input_list;
275 Elf_Internal_Sym **all_local_syms;
276
277 /* Used during a final link to store the base of the text and data
278 segments so that we can perform SEGREL relocations. */
279 bfd_vma text_segment_base;
280 bfd_vma data_segment_base;
281
282 /* Whether we support multiple sub-spaces for shared libs. */
283 unsigned int multi_subspace:1;
284
285 /* Flags set when various size branches are detected. Used to
286 select suitable defaults for the stub group size. */
287 unsigned int has_12bit_branch:1;
288 unsigned int has_17bit_branch:1;
289 unsigned int has_22bit_branch:1;
290
291 /* Set if we need a .plt stub to support lazy dynamic linking. */
292 unsigned int need_plt_stub:1;
293
294 /* Small local sym cache. */
295 struct sym_cache sym_cache;
296
297 /* Data for LDM relocations. */
298 union
299 {
300 bfd_signed_vma refcount;
301 bfd_vma offset;
302 } tls_ldm_got;
303 };
304
305 /* Various hash macros and functions. */
306 #define hppa_link_hash_table(p) \
307 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
308 == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL)
309
310 #define hppa_elf_hash_entry(ent) \
311 ((struct elf32_hppa_link_hash_entry *)(ent))
312
313 #define hppa_stub_hash_entry(ent) \
314 ((struct elf32_hppa_stub_hash_entry *)(ent))
315
316 #define hppa_stub_hash_lookup(table, string, create, copy) \
317 ((struct elf32_hppa_stub_hash_entry *) \
318 bfd_hash_lookup ((table), (string), (create), (copy)))
319
320 #define hppa_elf_local_got_tls_type(abfd) \
321 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
322
323 #define hh_name(hh) \
324 (hh ? hh->eh.root.root.string : "<undef>")
325
326 #define eh_name(eh) \
327 (eh ? eh->root.root.string : "<undef>")
328
329 /* Assorted hash table functions. */
330
331 /* Initialize an entry in the stub hash table. */
332
333 static struct bfd_hash_entry *
334 stub_hash_newfunc (struct bfd_hash_entry *entry,
335 struct bfd_hash_table *table,
336 const char *string)
337 {
338 /* Allocate the structure if it has not already been allocated by a
339 subclass. */
340 if (entry == NULL)
341 {
342 entry = bfd_hash_allocate (table,
343 sizeof (struct elf32_hppa_stub_hash_entry));
344 if (entry == NULL)
345 return entry;
346 }
347
348 /* Call the allocation method of the superclass. */
349 entry = bfd_hash_newfunc (entry, table, string);
350 if (entry != NULL)
351 {
352 struct elf32_hppa_stub_hash_entry *hsh;
353
354 /* Initialize the local fields. */
355 hsh = hppa_stub_hash_entry (entry);
356 hsh->stub_sec = NULL;
357 hsh->stub_offset = 0;
358 hsh->target_value = 0;
359 hsh->target_section = NULL;
360 hsh->stub_type = hppa_stub_long_branch;
361 hsh->hh = NULL;
362 hsh->id_sec = NULL;
363 }
364
365 return entry;
366 }
367
368 /* Initialize an entry in the link hash table. */
369
370 static struct bfd_hash_entry *
371 hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
372 struct bfd_hash_table *table,
373 const char *string)
374 {
375 /* Allocate the structure if it has not already been allocated by a
376 subclass. */
377 if (entry == NULL)
378 {
379 entry = bfd_hash_allocate (table,
380 sizeof (struct elf32_hppa_link_hash_entry));
381 if (entry == NULL)
382 return entry;
383 }
384
385 /* Call the allocation method of the superclass. */
386 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
387 if (entry != NULL)
388 {
389 struct elf32_hppa_link_hash_entry *hh;
390
391 /* Initialize the local fields. */
392 hh = hppa_elf_hash_entry (entry);
393 hh->hsh_cache = NULL;
394 hh->dyn_relocs = NULL;
395 hh->plabel = 0;
396 hh->tls_type = GOT_UNKNOWN;
397 }
398
399 return entry;
400 }
401
402 /* Free the derived linker hash table. */
403
404 static void
405 elf32_hppa_link_hash_table_free (bfd *obfd)
406 {
407 struct elf32_hppa_link_hash_table *htab
408 = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
409
410 bfd_hash_table_free (&htab->bstab);
411 _bfd_elf_link_hash_table_free (obfd);
412 }
413
414 /* Create the derived linker hash table. The PA ELF port uses the derived
415 hash table to keep information specific to the PA ELF linker (without
416 using static variables). */
417
418 static struct bfd_link_hash_table *
419 elf32_hppa_link_hash_table_create (bfd *abfd)
420 {
421 struct elf32_hppa_link_hash_table *htab;
422 bfd_size_type amt = sizeof (*htab);
423
424 htab = bfd_zmalloc (amt);
425 if (htab == NULL)
426 return NULL;
427
428 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
429 sizeof (struct elf32_hppa_link_hash_entry),
430 HPPA32_ELF_DATA))
431 {
432 free (htab);
433 return NULL;
434 }
435
436 /* Init the stub hash table too. */
437 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
438 sizeof (struct elf32_hppa_stub_hash_entry)))
439 {
440 _bfd_elf_link_hash_table_free (abfd);
441 return NULL;
442 }
443 htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
444
445 htab->text_segment_base = (bfd_vma) -1;
446 htab->data_segment_base = (bfd_vma) -1;
447 return &htab->etab.root;
448 }
449
450 /* Initialize the linker stubs BFD so that we can use it for linker
451 created dynamic sections. */
452
453 void
454 elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
455 {
456 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
457
458 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
459 htab->etab.dynobj = abfd;
460 }
461
462 /* Build a name for an entry in the stub hash table. */
463
464 static char *
465 hppa_stub_name (const asection *input_section,
466 const asection *sym_sec,
467 const struct elf32_hppa_link_hash_entry *hh,
468 const Elf_Internal_Rela *rela)
469 {
470 char *stub_name;
471 bfd_size_type len;
472
473 if (hh)
474 {
475 len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
476 stub_name = bfd_malloc (len);
477 if (stub_name != NULL)
478 sprintf (stub_name, "%08x_%s+%x",
479 input_section->id & 0xffffffff,
480 hh_name (hh),
481 (int) rela->r_addend & 0xffffffff);
482 }
483 else
484 {
485 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
486 stub_name = bfd_malloc (len);
487 if (stub_name != NULL)
488 sprintf (stub_name, "%08x_%x:%x+%x",
489 input_section->id & 0xffffffff,
490 sym_sec->id & 0xffffffff,
491 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
492 (int) rela->r_addend & 0xffffffff);
493 }
494 return stub_name;
495 }
496
497 /* Look up an entry in the stub hash. Stub entries are cached because
498 creating the stub name takes a bit of time. */
499
500 static struct elf32_hppa_stub_hash_entry *
501 hppa_get_stub_entry (const asection *input_section,
502 const asection *sym_sec,
503 struct elf32_hppa_link_hash_entry *hh,
504 const Elf_Internal_Rela *rela,
505 struct elf32_hppa_link_hash_table *htab)
506 {
507 struct elf32_hppa_stub_hash_entry *hsh_entry;
508 const asection *id_sec;
509
510 /* If this input section is part of a group of sections sharing one
511 stub section, then use the id of the first section in the group.
512 Stub names need to include a section id, as there may well be
513 more than one stub used to reach say, printf, and we need to
514 distinguish between them. */
515 id_sec = htab->stub_group[input_section->id].link_sec;
516
517 if (hh != NULL && hh->hsh_cache != NULL
518 && hh->hsh_cache->hh == hh
519 && hh->hsh_cache->id_sec == id_sec)
520 {
521 hsh_entry = hh->hsh_cache;
522 }
523 else
524 {
525 char *stub_name;
526
527 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
528 if (stub_name == NULL)
529 return NULL;
530
531 hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
532 stub_name, FALSE, FALSE);
533 if (hh != NULL)
534 hh->hsh_cache = hsh_entry;
535
536 free (stub_name);
537 }
538
539 return hsh_entry;
540 }
541
542 /* Add a new stub entry to the stub hash. Not all fields of the new
543 stub entry are initialised. */
544
545 static struct elf32_hppa_stub_hash_entry *
546 hppa_add_stub (const char *stub_name,
547 asection *section,
548 struct elf32_hppa_link_hash_table *htab)
549 {
550 asection *link_sec;
551 asection *stub_sec;
552 struct elf32_hppa_stub_hash_entry *hsh;
553
554 link_sec = htab->stub_group[section->id].link_sec;
555 stub_sec = htab->stub_group[section->id].stub_sec;
556 if (stub_sec == NULL)
557 {
558 stub_sec = htab->stub_group[link_sec->id].stub_sec;
559 if (stub_sec == NULL)
560 {
561 size_t namelen;
562 bfd_size_type len;
563 char *s_name;
564
565 namelen = strlen (link_sec->name);
566 len = namelen + sizeof (STUB_SUFFIX);
567 s_name = bfd_alloc (htab->stub_bfd, len);
568 if (s_name == NULL)
569 return NULL;
570
571 memcpy (s_name, link_sec->name, namelen);
572 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
573 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
574 if (stub_sec == NULL)
575 return NULL;
576 htab->stub_group[link_sec->id].stub_sec = stub_sec;
577 }
578 htab->stub_group[section->id].stub_sec = stub_sec;
579 }
580
581 /* Enter this entry into the linker stub hash table. */
582 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
583 TRUE, FALSE);
584 if (hsh == NULL)
585 {
586 /* xgettext:c-format */
587 _bfd_error_handler (_("%B: cannot create stub entry %s"),
588 section->owner, stub_name);
589 return NULL;
590 }
591
592 hsh->stub_sec = stub_sec;
593 hsh->stub_offset = 0;
594 hsh->id_sec = link_sec;
595 return hsh;
596 }
597
598 /* Determine the type of stub needed, if any, for a call. */
599
600 static enum elf32_hppa_stub_type
601 hppa_type_of_stub (asection *input_sec,
602 const Elf_Internal_Rela *rela,
603 struct elf32_hppa_link_hash_entry *hh,
604 bfd_vma destination,
605 struct bfd_link_info *info)
606 {
607 bfd_vma location;
608 bfd_vma branch_offset;
609 bfd_vma max_branch_offset;
610 unsigned int r_type;
611
612 if (hh != NULL
613 && hh->eh.plt.offset != (bfd_vma) -1
614 && hh->eh.dynindx != -1
615 && !hh->plabel
616 && (bfd_link_pic (info)
617 || !hh->eh.def_regular
618 || hh->eh.root.type == bfd_link_hash_defweak))
619 {
620 /* We need an import stub. Decide between hppa_stub_import
621 and hppa_stub_import_shared later. */
622 return hppa_stub_import;
623 }
624
625 /* Determine where the call point is. */
626 location = (input_sec->output_offset
627 + input_sec->output_section->vma
628 + rela->r_offset);
629
630 branch_offset = destination - location - 8;
631 r_type = ELF32_R_TYPE (rela->r_info);
632
633 /* Determine if a long branch stub is needed. parisc branch offsets
634 are relative to the second instruction past the branch, ie. +8
635 bytes on from the branch instruction location. The offset is
636 signed and counts in units of 4 bytes. */
637 if (r_type == (unsigned int) R_PARISC_PCREL17F)
638 max_branch_offset = (1 << (17 - 1)) << 2;
639
640 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
641 max_branch_offset = (1 << (12 - 1)) << 2;
642
643 else /* R_PARISC_PCREL22F. */
644 max_branch_offset = (1 << (22 - 1)) << 2;
645
646 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
647 return hppa_stub_long_branch;
648
649 return hppa_stub_none;
650 }
651
652 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
653 IN_ARG contains the link info pointer. */
654
655 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
656 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
657
658 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
659 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
660 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
661
662 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
663 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
664 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
665 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
666
667 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
668 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
669
670 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
671 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
672 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
673 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
674
675 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
676 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
677 #define NOP 0x08000240 /* nop */
678 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
679 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
680 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
681
682 #ifndef R19_STUBS
683 #define R19_STUBS 1
684 #endif
685
686 #if R19_STUBS
687 #define LDW_R1_DLT LDW_R1_R19
688 #else
689 #define LDW_R1_DLT LDW_R1_DP
690 #endif
691
692 static bfd_boolean
693 hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
694 {
695 struct elf32_hppa_stub_hash_entry *hsh;
696 struct bfd_link_info *info;
697 struct elf32_hppa_link_hash_table *htab;
698 asection *stub_sec;
699 bfd *stub_bfd;
700 bfd_byte *loc;
701 bfd_vma sym_value;
702 bfd_vma insn;
703 bfd_vma off;
704 int val;
705 int size;
706
707 /* Massage our args to the form they really have. */
708 hsh = hppa_stub_hash_entry (bh);
709 info = (struct bfd_link_info *)in_arg;
710
711 htab = hppa_link_hash_table (info);
712 if (htab == NULL)
713 return FALSE;
714
715 stub_sec = hsh->stub_sec;
716
717 /* Make a note of the offset within the stubs for this entry. */
718 hsh->stub_offset = stub_sec->size;
719 loc = stub_sec->contents + hsh->stub_offset;
720
721 stub_bfd = stub_sec->owner;
722
723 switch (hsh->stub_type)
724 {
725 case hppa_stub_long_branch:
726 /* Create the long branch. A long branch is formed with "ldil"
727 loading the upper bits of the target address into a register,
728 then branching with "be" which adds in the lower bits.
729 The "be" has its delay slot nullified. */
730 sym_value = (hsh->target_value
731 + hsh->target_section->output_offset
732 + hsh->target_section->output_section->vma);
733
734 val = hppa_field_adjust (sym_value, 0, e_lrsel);
735 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
736 bfd_put_32 (stub_bfd, insn, loc);
737
738 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
739 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
740 bfd_put_32 (stub_bfd, insn, loc + 4);
741
742 size = 8;
743 break;
744
745 case hppa_stub_long_branch_shared:
746 /* Branches are relative. This is where we are going to. */
747 sym_value = (hsh->target_value
748 + hsh->target_section->output_offset
749 + hsh->target_section->output_section->vma);
750
751 /* And this is where we are coming from, more or less. */
752 sym_value -= (hsh->stub_offset
753 + stub_sec->output_offset
754 + stub_sec->output_section->vma);
755
756 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
757 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
758 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
759 bfd_put_32 (stub_bfd, insn, loc + 4);
760
761 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
762 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
763 bfd_put_32 (stub_bfd, insn, loc + 8);
764 size = 12;
765 break;
766
767 case hppa_stub_import:
768 case hppa_stub_import_shared:
769 off = hsh->hh->eh.plt.offset;
770 if (off >= (bfd_vma) -2)
771 abort ();
772
773 off &= ~ (bfd_vma) 1;
774 sym_value = (off
775 + htab->etab.splt->output_offset
776 + htab->etab.splt->output_section->vma
777 - elf_gp (htab->etab.splt->output_section->owner));
778
779 insn = ADDIL_DP;
780 #if R19_STUBS
781 if (hsh->stub_type == hppa_stub_import_shared)
782 insn = ADDIL_R19;
783 #endif
784 val = hppa_field_adjust (sym_value, 0, e_lrsel),
785 insn = hppa_rebuild_insn ((int) insn, val, 21);
786 bfd_put_32 (stub_bfd, insn, loc);
787
788 /* It is critical to use lrsel/rrsel here because we are using
789 two different offsets (+0 and +4) from sym_value. If we use
790 lsel/rsel then with unfortunate sym_values we will round
791 sym_value+4 up to the next 2k block leading to a mis-match
792 between the lsel and rsel value. */
793 val = hppa_field_adjust (sym_value, 0, e_rrsel);
794 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
795 bfd_put_32 (stub_bfd, insn, loc + 4);
796
797 if (htab->multi_subspace)
798 {
799 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
800 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
801 bfd_put_32 (stub_bfd, insn, loc + 8);
802
803 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
804 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
805 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
806 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
807
808 size = 28;
809 }
810 else
811 {
812 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
813 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
814 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
815 bfd_put_32 (stub_bfd, insn, loc + 12);
816
817 size = 16;
818 }
819
820 break;
821
822 case hppa_stub_export:
823 /* Branches are relative. This is where we are going to. */
824 sym_value = (hsh->target_value
825 + hsh->target_section->output_offset
826 + hsh->target_section->output_section->vma);
827
828 /* And this is where we are coming from. */
829 sym_value -= (hsh->stub_offset
830 + stub_sec->output_offset
831 + stub_sec->output_section->vma);
832
833 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
834 && (!htab->has_22bit_branch
835 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
836 {
837 _bfd_error_handler
838 /* xgettext:c-format */
839 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
840 hsh->target_section->owner,
841 stub_sec,
842 (long) hsh->stub_offset,
843 hsh->bh_root.string);
844 bfd_set_error (bfd_error_bad_value);
845 return FALSE;
846 }
847
848 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
849 if (!htab->has_22bit_branch)
850 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
851 else
852 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
853 bfd_put_32 (stub_bfd, insn, loc);
854
855 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
856 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
857 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
858 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
859 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
860
861 /* Point the function symbol at the stub. */
862 hsh->hh->eh.root.u.def.section = stub_sec;
863 hsh->hh->eh.root.u.def.value = stub_sec->size;
864
865 size = 24;
866 break;
867
868 default:
869 BFD_FAIL ();
870 return FALSE;
871 }
872
873 stub_sec->size += size;
874 return TRUE;
875 }
876
877 #undef LDIL_R1
878 #undef BE_SR4_R1
879 #undef BL_R1
880 #undef ADDIL_R1
881 #undef DEPI_R1
882 #undef LDW_R1_R21
883 #undef LDW_R1_DLT
884 #undef LDW_R1_R19
885 #undef ADDIL_R19
886 #undef LDW_R1_DP
887 #undef LDSID_R21_R1
888 #undef MTSP_R1
889 #undef BE_SR0_R21
890 #undef STW_RP
891 #undef BV_R0_R21
892 #undef BL_RP
893 #undef NOP
894 #undef LDW_RP
895 #undef LDSID_RP_R1
896 #undef BE_SR0_RP
897
898 /* As above, but don't actually build the stub. Just bump offset so
899 we know stub section sizes. */
900
901 static bfd_boolean
902 hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
903 {
904 struct elf32_hppa_stub_hash_entry *hsh;
905 struct elf32_hppa_link_hash_table *htab;
906 int size;
907
908 /* Massage our args to the form they really have. */
909 hsh = hppa_stub_hash_entry (bh);
910 htab = in_arg;
911
912 if (hsh->stub_type == hppa_stub_long_branch)
913 size = 8;
914 else if (hsh->stub_type == hppa_stub_long_branch_shared)
915 size = 12;
916 else if (hsh->stub_type == hppa_stub_export)
917 size = 24;
918 else /* hppa_stub_import or hppa_stub_import_shared. */
919 {
920 if (htab->multi_subspace)
921 size = 28;
922 else
923 size = 16;
924 }
925
926 hsh->stub_sec->size += size;
927 return TRUE;
928 }
929
930 /* Return nonzero if ABFD represents an HPPA ELF32 file.
931 Additionally we set the default architecture and machine. */
932
933 static bfd_boolean
934 elf32_hppa_object_p (bfd *abfd)
935 {
936 Elf_Internal_Ehdr * i_ehdrp;
937 unsigned int flags;
938
939 i_ehdrp = elf_elfheader (abfd);
940 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
941 {
942 /* GCC on hppa-linux produces binaries with OSABI=GNU,
943 but the kernel produces corefiles with OSABI=SysV. */
944 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
945 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
946 return FALSE;
947 }
948 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
949 {
950 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
951 but the kernel produces corefiles with OSABI=SysV. */
952 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
953 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
954 return FALSE;
955 }
956 else
957 {
958 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
959 return FALSE;
960 }
961
962 flags = i_ehdrp->e_flags;
963 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
964 {
965 case EFA_PARISC_1_0:
966 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
967 case EFA_PARISC_1_1:
968 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
969 case EFA_PARISC_2_0:
970 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
971 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
972 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
973 }
974 return TRUE;
975 }
976
977 /* Create the .plt and .got sections, and set up our hash table
978 short-cuts to various dynamic sections. */
979
980 static bfd_boolean
981 elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
982 {
983 struct elf32_hppa_link_hash_table *htab;
984 struct elf_link_hash_entry *eh;
985
986 /* Don't try to create the .plt and .got twice. */
987 htab = hppa_link_hash_table (info);
988 if (htab == NULL)
989 return FALSE;
990 if (htab->etab.splt != NULL)
991 return TRUE;
992
993 /* Call the generic code to do most of the work. */
994 if (! _bfd_elf_create_dynamic_sections (abfd, info))
995 return FALSE;
996
997 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
998 application, because __canonicalize_funcptr_for_compare needs it. */
999 eh = elf_hash_table (info)->hgot;
1000 eh->forced_local = 0;
1001 eh->other = STV_DEFAULT;
1002 return bfd_elf_link_record_dynamic_symbol (info, eh);
1003 }
1004
1005 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1006
1007 static void
1008 elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1009 struct elf_link_hash_entry *eh_dir,
1010 struct elf_link_hash_entry *eh_ind)
1011 {
1012 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1013
1014 hh_dir = hppa_elf_hash_entry (eh_dir);
1015 hh_ind = hppa_elf_hash_entry (eh_ind);
1016
1017 if (hh_ind->dyn_relocs != NULL)
1018 {
1019 if (hh_dir->dyn_relocs != NULL)
1020 {
1021 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1022 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1023
1024 /* Add reloc counts against the indirect sym to the direct sym
1025 list. Merge any entries against the same section. */
1026 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1027 {
1028 struct elf32_hppa_dyn_reloc_entry *hdh_q;
1029
1030 for (hdh_q = hh_dir->dyn_relocs;
1031 hdh_q != NULL;
1032 hdh_q = hdh_q->hdh_next)
1033 if (hdh_q->sec == hdh_p->sec)
1034 {
1035 #if RELATIVE_DYNRELOCS
1036 hdh_q->relative_count += hdh_p->relative_count;
1037 #endif
1038 hdh_q->count += hdh_p->count;
1039 *hdh_pp = hdh_p->hdh_next;
1040 break;
1041 }
1042 if (hdh_q == NULL)
1043 hdh_pp = &hdh_p->hdh_next;
1044 }
1045 *hdh_pp = hh_dir->dyn_relocs;
1046 }
1047
1048 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1049 hh_ind->dyn_relocs = NULL;
1050 }
1051
1052 if (ELIMINATE_COPY_RELOCS
1053 && eh_ind->root.type != bfd_link_hash_indirect
1054 && eh_dir->dynamic_adjusted)
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. */
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;
1063 }
1064 else
1065 {
1066 if (eh_ind->root.type == bfd_link_hash_indirect
1067 && eh_dir->got.refcount <= 0)
1068 {
1069 hh_dir->tls_type = hh_ind->tls_type;
1070 hh_ind->tls_type = GOT_UNKNOWN;
1071 }
1072
1073 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1074 }
1075 }
1076
1077 static int
1078 elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1079 int r_type, int is_local ATTRIBUTE_UNUSED)
1080 {
1081 /* For now we don't support linker optimizations. */
1082 return r_type;
1083 }
1084
1085 /* Return a pointer to the local GOT, PLT and TLS reference counts
1086 for ABFD. Returns NULL if the storage allocation fails. */
1087
1088 static bfd_signed_vma *
1089 hppa32_elf_local_refcounts (bfd *abfd)
1090 {
1091 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1092 bfd_signed_vma *local_refcounts;
1093
1094 local_refcounts = elf_local_got_refcounts (abfd);
1095 if (local_refcounts == NULL)
1096 {
1097 bfd_size_type size;
1098
1099 /* Allocate space for local GOT and PLT reference
1100 counts. Done this way to save polluting elf_obj_tdata
1101 with another target specific pointer. */
1102 size = symtab_hdr->sh_info;
1103 size *= 2 * sizeof (bfd_signed_vma);
1104 /* Add in space to store the local GOT TLS types. */
1105 size += symtab_hdr->sh_info;
1106 local_refcounts = bfd_zalloc (abfd, size);
1107 if (local_refcounts == NULL)
1108 return NULL;
1109 elf_local_got_refcounts (abfd) = local_refcounts;
1110 memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1111 symtab_hdr->sh_info);
1112 }
1113 return local_refcounts;
1114 }
1115
1116
1117 /* Look through the relocs for a section during the first phase, and
1118 calculate needed space in the global offset table, procedure linkage
1119 table, and dynamic reloc sections. At this point we haven't
1120 necessarily read all the input files. */
1121
1122 static bfd_boolean
1123 elf32_hppa_check_relocs (bfd *abfd,
1124 struct bfd_link_info *info,
1125 asection *sec,
1126 const Elf_Internal_Rela *relocs)
1127 {
1128 Elf_Internal_Shdr *symtab_hdr;
1129 struct elf_link_hash_entry **eh_syms;
1130 const Elf_Internal_Rela *rela;
1131 const Elf_Internal_Rela *rela_end;
1132 struct elf32_hppa_link_hash_table *htab;
1133 asection *sreloc;
1134 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
1135
1136 if (bfd_link_relocatable (info))
1137 return TRUE;
1138
1139 htab = hppa_link_hash_table (info);
1140 if (htab == NULL)
1141 return FALSE;
1142 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1143 eh_syms = elf_sym_hashes (abfd);
1144 sreloc = NULL;
1145
1146 rela_end = relocs + sec->reloc_count;
1147 for (rela = relocs; rela < rela_end; rela++)
1148 {
1149 enum {
1150 NEED_GOT = 1,
1151 NEED_PLT = 2,
1152 NEED_DYNREL = 4,
1153 PLT_PLABEL = 8
1154 };
1155
1156 unsigned int r_symndx, r_type;
1157 struct elf32_hppa_link_hash_entry *hh;
1158 int need_entry = 0;
1159
1160 r_symndx = ELF32_R_SYM (rela->r_info);
1161
1162 if (r_symndx < symtab_hdr->sh_info)
1163 hh = NULL;
1164 else
1165 {
1166 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1167 while (hh->eh.root.type == bfd_link_hash_indirect
1168 || hh->eh.root.type == bfd_link_hash_warning)
1169 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1170
1171 /* PR15323, ref flags aren't set for references in the same
1172 object. */
1173 hh->eh.root.non_ir_ref = 1;
1174 }
1175
1176 r_type = ELF32_R_TYPE (rela->r_info);
1177 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
1178
1179 switch (r_type)
1180 {
1181 case R_PARISC_DLTIND14F:
1182 case R_PARISC_DLTIND14R:
1183 case R_PARISC_DLTIND21L:
1184 /* This symbol requires a global offset table entry. */
1185 need_entry = NEED_GOT;
1186 break;
1187
1188 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1189 case R_PARISC_PLABEL21L:
1190 case R_PARISC_PLABEL32:
1191 /* If the addend is non-zero, we break badly. */
1192 if (rela->r_addend != 0)
1193 abort ();
1194
1195 /* If we are creating a shared library, then we need to
1196 create a PLT entry for all PLABELs, because PLABELs with
1197 local symbols may be passed via a pointer to another
1198 object. Additionally, output a dynamic relocation
1199 pointing to the PLT entry.
1200
1201 For executables, the original 32-bit ABI allowed two
1202 different styles of PLABELs (function pointers): For
1203 global functions, the PLABEL word points into the .plt
1204 two bytes past a (function address, gp) pair, and for
1205 local functions the PLABEL points directly at the
1206 function. The magic +2 for the first type allows us to
1207 differentiate between the two. As you can imagine, this
1208 is a real pain when it comes to generating code to call
1209 functions indirectly or to compare function pointers.
1210 We avoid the mess by always pointing a PLABEL into the
1211 .plt, even for local functions. */
1212 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1213 break;
1214
1215 case R_PARISC_PCREL12F:
1216 htab->has_12bit_branch = 1;
1217 goto branch_common;
1218
1219 case R_PARISC_PCREL17C:
1220 case R_PARISC_PCREL17F:
1221 htab->has_17bit_branch = 1;
1222 goto branch_common;
1223
1224 case R_PARISC_PCREL22F:
1225 htab->has_22bit_branch = 1;
1226 branch_common:
1227 /* Function calls might need to go through the .plt, and
1228 might require long branch stubs. */
1229 if (hh == NULL)
1230 {
1231 /* We know local syms won't need a .plt entry, and if
1232 they need a long branch stub we can't guarantee that
1233 we can reach the stub. So just flag an error later
1234 if we're doing a shared link and find we need a long
1235 branch stub. */
1236 continue;
1237 }
1238 else
1239 {
1240 /* Global symbols will need a .plt entry if they remain
1241 global, and in most cases won't need a long branch
1242 stub. Unfortunately, we have to cater for the case
1243 where a symbol is forced local by versioning, or due
1244 to symbolic linking, and we lose the .plt entry. */
1245 need_entry = NEED_PLT;
1246 if (hh->eh.type == STT_PARISC_MILLI)
1247 need_entry = 0;
1248 }
1249 break;
1250
1251 case R_PARISC_SEGBASE: /* Used to set segment base. */
1252 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1253 case R_PARISC_PCREL14F: /* PC relative load/store. */
1254 case R_PARISC_PCREL14R:
1255 case R_PARISC_PCREL17R: /* External branches. */
1256 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1257 case R_PARISC_PCREL32:
1258 /* We don't need to propagate the relocation if linking a
1259 shared object since these are section relative. */
1260 continue;
1261
1262 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1263 case R_PARISC_DPREL14R:
1264 case R_PARISC_DPREL21L:
1265 if (bfd_link_pic (info))
1266 {
1267 _bfd_error_handler
1268 /* xgettext:c-format */
1269 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1270 abfd,
1271 elf_hppa_howto_table[r_type].name);
1272 bfd_set_error (bfd_error_bad_value);
1273 return FALSE;
1274 }
1275 /* Fall through. */
1276
1277 case R_PARISC_DIR17F: /* Used for external branches. */
1278 case R_PARISC_DIR17R:
1279 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1280 case R_PARISC_DIR14R:
1281 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1282 case R_PARISC_DIR32: /* .word relocs. */
1283 /* We may want to output a dynamic relocation later. */
1284 need_entry = NEED_DYNREL;
1285 break;
1286
1287 /* This relocation describes the C++ object vtable hierarchy.
1288 Reconstruct it for later use during GC. */
1289 case R_PARISC_GNU_VTINHERIT:
1290 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1291 return FALSE;
1292 continue;
1293
1294 /* This relocation describes which C++ vtable entries are actually
1295 used. Record for later use during GC. */
1296 case R_PARISC_GNU_VTENTRY:
1297 BFD_ASSERT (hh != NULL);
1298 if (hh != NULL
1299 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1300 return FALSE;
1301 continue;
1302
1303 case R_PARISC_TLS_GD21L:
1304 case R_PARISC_TLS_GD14R:
1305 case R_PARISC_TLS_LDM21L:
1306 case R_PARISC_TLS_LDM14R:
1307 need_entry = NEED_GOT;
1308 break;
1309
1310 case R_PARISC_TLS_IE21L:
1311 case R_PARISC_TLS_IE14R:
1312 if (bfd_link_pic (info))
1313 info->flags |= DF_STATIC_TLS;
1314 need_entry = NEED_GOT;
1315 break;
1316
1317 default:
1318 continue;
1319 }
1320
1321 /* Now carry out our orders. */
1322 if (need_entry & NEED_GOT)
1323 {
1324 switch (r_type)
1325 {
1326 default:
1327 tls_type = GOT_NORMAL;
1328 break;
1329 case R_PARISC_TLS_GD21L:
1330 case R_PARISC_TLS_GD14R:
1331 tls_type |= GOT_TLS_GD;
1332 break;
1333 case R_PARISC_TLS_LDM21L:
1334 case R_PARISC_TLS_LDM14R:
1335 tls_type |= GOT_TLS_LDM;
1336 break;
1337 case R_PARISC_TLS_IE21L:
1338 case R_PARISC_TLS_IE14R:
1339 tls_type |= GOT_TLS_IE;
1340 break;
1341 }
1342
1343 /* Allocate space for a GOT entry, as well as a dynamic
1344 relocation for this entry. */
1345 if (htab->etab.sgot == NULL)
1346 {
1347 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1348 return FALSE;
1349 }
1350
1351 if (r_type == R_PARISC_TLS_LDM21L
1352 || r_type == R_PARISC_TLS_LDM14R)
1353 htab->tls_ldm_got.refcount += 1;
1354 else
1355 {
1356 if (hh != NULL)
1357 {
1358 hh->eh.got.refcount += 1;
1359 old_tls_type = hh->tls_type;
1360 }
1361 else
1362 {
1363 bfd_signed_vma *local_got_refcounts;
1364
1365 /* This is a global offset table entry for a local symbol. */
1366 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1367 if (local_got_refcounts == NULL)
1368 return FALSE;
1369 local_got_refcounts[r_symndx] += 1;
1370
1371 old_tls_type = hppa_elf_local_got_tls_type (abfd) [r_symndx];
1372 }
1373
1374 tls_type |= old_tls_type;
1375
1376 if (old_tls_type != tls_type)
1377 {
1378 if (hh != NULL)
1379 hh->tls_type = tls_type;
1380 else
1381 hppa_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1382 }
1383
1384 }
1385 }
1386
1387 if (need_entry & NEED_PLT)
1388 {
1389 /* If we are creating a shared library, and this is a reloc
1390 against a weak symbol or a global symbol in a dynamic
1391 object, then we will be creating an import stub and a
1392 .plt entry for the symbol. Similarly, on a normal link
1393 to symbols defined in a dynamic object we'll need the
1394 import stub and a .plt entry. We don't know yet whether
1395 the symbol is defined or not, so make an entry anyway and
1396 clean up later in adjust_dynamic_symbol. */
1397 if ((sec->flags & SEC_ALLOC) != 0)
1398 {
1399 if (hh != NULL)
1400 {
1401 hh->eh.needs_plt = 1;
1402 hh->eh.plt.refcount += 1;
1403
1404 /* If this .plt entry is for a plabel, mark it so
1405 that adjust_dynamic_symbol will keep the entry
1406 even if it appears to be local. */
1407 if (need_entry & PLT_PLABEL)
1408 hh->plabel = 1;
1409 }
1410 else if (need_entry & PLT_PLABEL)
1411 {
1412 bfd_signed_vma *local_got_refcounts;
1413 bfd_signed_vma *local_plt_refcounts;
1414
1415 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1416 if (local_got_refcounts == NULL)
1417 return FALSE;
1418 local_plt_refcounts = (local_got_refcounts
1419 + symtab_hdr->sh_info);
1420 local_plt_refcounts[r_symndx] += 1;
1421 }
1422 }
1423 }
1424
1425 if (need_entry & NEED_DYNREL)
1426 {
1427 /* Flag this symbol as having a non-got, non-plt reference
1428 so that we generate copy relocs if it turns out to be
1429 dynamic. */
1430 if (hh != NULL && !bfd_link_pic (info))
1431 hh->eh.non_got_ref = 1;
1432
1433 /* If we are creating a shared library then we need to copy
1434 the reloc into the shared library. However, if we are
1435 linking with -Bsymbolic, we need only copy absolute
1436 relocs or relocs against symbols that are not defined in
1437 an object we are including in the link. PC- or DP- or
1438 DLT-relative relocs against any local sym or global sym
1439 with DEF_REGULAR set, can be discarded. At this point we
1440 have not seen all the input files, so it is possible that
1441 DEF_REGULAR is not set now but will be set later (it is
1442 never cleared). We account for that possibility below by
1443 storing information in the dyn_relocs field of the
1444 hash table entry.
1445
1446 A similar situation to the -Bsymbolic case occurs when
1447 creating shared libraries and symbol visibility changes
1448 render the symbol local.
1449
1450 As it turns out, all the relocs we will be creating here
1451 are absolute, so we cannot remove them on -Bsymbolic
1452 links or visibility changes anyway. A STUB_REL reloc
1453 is absolute too, as in that case it is the reloc in the
1454 stub we will be creating, rather than copying the PCREL
1455 reloc in the branch.
1456
1457 If on the other hand, we are creating an executable, we
1458 may need to keep relocations for symbols satisfied by a
1459 dynamic library if we manage to avoid copy relocs for the
1460 symbol. */
1461 if ((bfd_link_pic (info)
1462 && (sec->flags & SEC_ALLOC) != 0
1463 && (IS_ABSOLUTE_RELOC (r_type)
1464 || (hh != NULL
1465 && (!SYMBOLIC_BIND (info, &hh->eh)
1466 || hh->eh.root.type == bfd_link_hash_defweak
1467 || !hh->eh.def_regular))))
1468 || (ELIMINATE_COPY_RELOCS
1469 && !bfd_link_pic (info)
1470 && (sec->flags & SEC_ALLOC) != 0
1471 && hh != NULL
1472 && (hh->eh.root.type == bfd_link_hash_defweak
1473 || !hh->eh.def_regular)))
1474 {
1475 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1476 struct elf32_hppa_dyn_reloc_entry **hdh_head;
1477
1478 /* Create a reloc section in dynobj and make room for
1479 this reloc. */
1480 if (sreloc == NULL)
1481 {
1482 sreloc = _bfd_elf_make_dynamic_reloc_section
1483 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1484
1485 if (sreloc == NULL)
1486 {
1487 bfd_set_error (bfd_error_bad_value);
1488 return FALSE;
1489 }
1490 }
1491
1492 /* If this is a global symbol, we count the number of
1493 relocations we need for this symbol. */
1494 if (hh != NULL)
1495 {
1496 hdh_head = &hh->dyn_relocs;
1497 }
1498 else
1499 {
1500 /* Track dynamic relocs needed for local syms too.
1501 We really need local syms available to do this
1502 easily. Oh well. */
1503 asection *sr;
1504 void *vpp;
1505 Elf_Internal_Sym *isym;
1506
1507 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1508 abfd, r_symndx);
1509 if (isym == NULL)
1510 return FALSE;
1511
1512 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1513 if (sr == NULL)
1514 sr = sec;
1515
1516 vpp = &elf_section_data (sr)->local_dynrel;
1517 hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp;
1518 }
1519
1520 hdh_p = *hdh_head;
1521 if (hdh_p == NULL || hdh_p->sec != sec)
1522 {
1523 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1524 if (hdh_p == NULL)
1525 return FALSE;
1526 hdh_p->hdh_next = *hdh_head;
1527 *hdh_head = hdh_p;
1528 hdh_p->sec = sec;
1529 hdh_p->count = 0;
1530 #if RELATIVE_DYNRELOCS
1531 hdh_p->relative_count = 0;
1532 #endif
1533 }
1534
1535 hdh_p->count += 1;
1536 #if RELATIVE_DYNRELOCS
1537 if (!IS_ABSOLUTE_RELOC (rtype))
1538 hdh_p->relative_count += 1;
1539 #endif
1540 }
1541 }
1542 }
1543
1544 return TRUE;
1545 }
1546
1547 /* Return the section that should be marked against garbage collection
1548 for a given relocation. */
1549
1550 static asection *
1551 elf32_hppa_gc_mark_hook (asection *sec,
1552 struct bfd_link_info *info,
1553 Elf_Internal_Rela *rela,
1554 struct elf_link_hash_entry *hh,
1555 Elf_Internal_Sym *sym)
1556 {
1557 if (hh != NULL)
1558 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1559 {
1560 case R_PARISC_GNU_VTINHERIT:
1561 case R_PARISC_GNU_VTENTRY:
1562 return NULL;
1563 }
1564
1565 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1566 }
1567
1568 /* Update the got and plt entry reference counts for the section being
1569 removed. */
1570
1571 static bfd_boolean
1572 elf32_hppa_gc_sweep_hook (bfd *abfd,
1573 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1574 asection *sec,
1575 const Elf_Internal_Rela *relocs)
1576 {
1577 Elf_Internal_Shdr *symtab_hdr;
1578 struct elf_link_hash_entry **eh_syms;
1579 bfd_signed_vma *local_got_refcounts;
1580 bfd_signed_vma *local_plt_refcounts;
1581 const Elf_Internal_Rela *rela, *relend;
1582 struct elf32_hppa_link_hash_table *htab;
1583
1584 if (bfd_link_relocatable (info))
1585 return TRUE;
1586
1587 htab = hppa_link_hash_table (info);
1588 if (htab == NULL)
1589 return FALSE;
1590
1591 elf_section_data (sec)->local_dynrel = NULL;
1592
1593 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1594 eh_syms = elf_sym_hashes (abfd);
1595 local_got_refcounts = elf_local_got_refcounts (abfd);
1596 local_plt_refcounts = local_got_refcounts;
1597 if (local_plt_refcounts != NULL)
1598 local_plt_refcounts += symtab_hdr->sh_info;
1599
1600 relend = relocs + sec->reloc_count;
1601 for (rela = relocs; rela < relend; rela++)
1602 {
1603 unsigned long r_symndx;
1604 unsigned int r_type;
1605 struct elf_link_hash_entry *eh = NULL;
1606
1607 r_symndx = ELF32_R_SYM (rela->r_info);
1608 if (r_symndx >= symtab_hdr->sh_info)
1609 {
1610 struct elf32_hppa_link_hash_entry *hh;
1611 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1612 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1613
1614 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1615 while (eh->root.type == bfd_link_hash_indirect
1616 || eh->root.type == bfd_link_hash_warning)
1617 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1618 hh = hppa_elf_hash_entry (eh);
1619
1620 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
1621 if (hdh_p->sec == sec)
1622 {
1623 /* Everything must go for SEC. */
1624 *hdh_pp = hdh_p->hdh_next;
1625 break;
1626 }
1627 }
1628
1629 r_type = ELF32_R_TYPE (rela->r_info);
1630 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL);
1631
1632 switch (r_type)
1633 {
1634 case R_PARISC_DLTIND14F:
1635 case R_PARISC_DLTIND14R:
1636 case R_PARISC_DLTIND21L:
1637 case R_PARISC_TLS_GD21L:
1638 case R_PARISC_TLS_GD14R:
1639 case R_PARISC_TLS_IE21L:
1640 case R_PARISC_TLS_IE14R:
1641 if (eh != NULL)
1642 {
1643 if (eh->got.refcount > 0)
1644 eh->got.refcount -= 1;
1645 }
1646 else if (local_got_refcounts != NULL)
1647 {
1648 if (local_got_refcounts[r_symndx] > 0)
1649 local_got_refcounts[r_symndx] -= 1;
1650 }
1651 break;
1652
1653 case R_PARISC_TLS_LDM21L:
1654 case R_PARISC_TLS_LDM14R:
1655 htab->tls_ldm_got.refcount -= 1;
1656 break;
1657
1658 case R_PARISC_PCREL12F:
1659 case R_PARISC_PCREL17C:
1660 case R_PARISC_PCREL17F:
1661 case R_PARISC_PCREL22F:
1662 if (eh != NULL)
1663 {
1664 if (eh->plt.refcount > 0)
1665 eh->plt.refcount -= 1;
1666 }
1667 break;
1668
1669 case R_PARISC_PLABEL14R:
1670 case R_PARISC_PLABEL21L:
1671 case R_PARISC_PLABEL32:
1672 if (eh != NULL)
1673 {
1674 if (eh->plt.refcount > 0)
1675 eh->plt.refcount -= 1;
1676 }
1677 else if (local_plt_refcounts != NULL)
1678 {
1679 if (local_plt_refcounts[r_symndx] > 0)
1680 local_plt_refcounts[r_symndx] -= 1;
1681 }
1682 break;
1683
1684 default:
1685 break;
1686 }
1687 }
1688
1689 return TRUE;
1690 }
1691
1692 /* Support for core dump NOTE sections. */
1693
1694 static bfd_boolean
1695 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1696 {
1697 int offset;
1698 size_t size;
1699
1700 switch (note->descsz)
1701 {
1702 default:
1703 return FALSE;
1704
1705 case 396: /* Linux/hppa */
1706 /* pr_cursig */
1707 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1708
1709 /* pr_pid */
1710 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1711
1712 /* pr_reg */
1713 offset = 72;
1714 size = 320;
1715
1716 break;
1717 }
1718
1719 /* Make a ".reg/999" section. */
1720 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1721 size, note->descpos + offset);
1722 }
1723
1724 static bfd_boolean
1725 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1726 {
1727 switch (note->descsz)
1728 {
1729 default:
1730 return FALSE;
1731
1732 case 124: /* Linux/hppa elf_prpsinfo. */
1733 elf_tdata (abfd)->core->program
1734 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1735 elf_tdata (abfd)->core->command
1736 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1737 }
1738
1739 /* Note that for some reason, a spurious space is tacked
1740 onto the end of the args in some (at least one anyway)
1741 implementations, so strip it off if it exists. */
1742 {
1743 char *command = elf_tdata (abfd)->core->command;
1744 int n = strlen (command);
1745
1746 if (0 < n && command[n - 1] == ' ')
1747 command[n - 1] = '\0';
1748 }
1749
1750 return TRUE;
1751 }
1752
1753 /* Our own version of hide_symbol, so that we can keep plt entries for
1754 plabels. */
1755
1756 static void
1757 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1758 struct elf_link_hash_entry *eh,
1759 bfd_boolean force_local)
1760 {
1761 if (force_local)
1762 {
1763 eh->forced_local = 1;
1764 if (eh->dynindx != -1)
1765 {
1766 eh->dynindx = -1;
1767 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1768 eh->dynstr_index);
1769 }
1770
1771 /* PR 16082: Remove version information from hidden symbol. */
1772 eh->verinfo.verdef = NULL;
1773 eh->verinfo.vertree = NULL;
1774 }
1775
1776 /* STT_GNU_IFUNC symbol must go through PLT. */
1777 if (! hppa_elf_hash_entry (eh)->plabel
1778 && eh->type != STT_GNU_IFUNC)
1779 {
1780 eh->needs_plt = 0;
1781 eh->plt = elf_hash_table (info)->init_plt_offset;
1782 }
1783 }
1784
1785 /* Adjust a symbol defined by a dynamic object and referenced by a
1786 regular object. The current definition is in some section of the
1787 dynamic object, but we're not including those sections. We have to
1788 change the definition to something the rest of the link can
1789 understand. */
1790
1791 static bfd_boolean
1792 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1793 struct elf_link_hash_entry *eh)
1794 {
1795 struct elf32_hppa_link_hash_table *htab;
1796 asection *sec, *srel;
1797
1798 /* If this is a function, put it in the procedure linkage table. We
1799 will fill in the contents of the procedure linkage table later. */
1800 if (eh->type == STT_FUNC
1801 || eh->needs_plt)
1802 {
1803 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1804 The refcounts are not reliable when it has been hidden since
1805 hide_symbol can be called before the plabel flag is set. */
1806 if (hppa_elf_hash_entry (eh)->plabel
1807 && eh->plt.refcount <= 0)
1808 eh->plt.refcount = 1;
1809
1810 if (eh->plt.refcount <= 0
1811 || (eh->def_regular
1812 && eh->root.type != bfd_link_hash_defweak
1813 && ! hppa_elf_hash_entry (eh)->plabel
1814 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh))))
1815 {
1816 /* The .plt entry is not needed when:
1817 a) Garbage collection has removed all references to the
1818 symbol, or
1819 b) We know for certain the symbol is defined in this
1820 object, and it's not a weak definition, nor is the symbol
1821 used by a plabel relocation. Either this object is the
1822 application or we are doing a shared symbolic link. */
1823
1824 eh->plt.offset = (bfd_vma) -1;
1825 eh->needs_plt = 0;
1826 }
1827
1828 return TRUE;
1829 }
1830 else
1831 eh->plt.offset = (bfd_vma) -1;
1832
1833 /* If this is a weak symbol, and there is a real definition, the
1834 processor independent code will have arranged for us to see the
1835 real definition first, and we can just use the same value. */
1836 if (eh->u.weakdef != NULL)
1837 {
1838 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1839 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1840 abort ();
1841 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1842 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1843 if (ELIMINATE_COPY_RELOCS)
1844 eh->non_got_ref = eh->u.weakdef->non_got_ref;
1845 return TRUE;
1846 }
1847
1848 /* This is a reference to a symbol defined by a dynamic object which
1849 is not a function. */
1850
1851 /* If we are creating a shared library, we must presume that the
1852 only references to the symbol are via the global offset table.
1853 For such cases we need not do anything here; the relocations will
1854 be handled correctly by relocate_section. */
1855 if (bfd_link_pic (info))
1856 return TRUE;
1857
1858 /* If there are no references to this symbol that do not use the
1859 GOT, we don't need to generate a copy reloc. */
1860 if (!eh->non_got_ref)
1861 return TRUE;
1862
1863 if (ELIMINATE_COPY_RELOCS)
1864 {
1865 struct elf32_hppa_link_hash_entry *hh;
1866 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1867
1868 hh = hppa_elf_hash_entry (eh);
1869 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1870 {
1871 sec = hdh_p->sec->output_section;
1872 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1873 break;
1874 }
1875
1876 /* If we didn't find any dynamic relocs in read-only sections, then
1877 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1878 if (hdh_p == NULL)
1879 {
1880 eh->non_got_ref = 0;
1881 return TRUE;
1882 }
1883 }
1884
1885 /* We must allocate the symbol in our .dynbss section, which will
1886 become part of the .bss section of the executable. There will be
1887 an entry for this symbol in the .dynsym section. The dynamic
1888 object will contain position independent code, so all references
1889 from the dynamic object to this symbol will go through the global
1890 offset table. The dynamic linker will use the .dynsym entry to
1891 determine the address it must put in the global offset table, so
1892 both the dynamic object and the regular object will refer to the
1893 same memory location for the variable. */
1894
1895 htab = hppa_link_hash_table (info);
1896 if (htab == NULL)
1897 return FALSE;
1898
1899 /* We must generate a COPY reloc to tell the dynamic linker to
1900 copy the initial value out of the dynamic object and into the
1901 runtime process image. */
1902 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1903 {
1904 sec = htab->etab.sdynrelro;
1905 srel = htab->etab.sreldynrelro;
1906 }
1907 else
1908 {
1909 sec = htab->etab.sdynbss;
1910 srel = htab->etab.srelbss;
1911 }
1912 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1913 {
1914 srel->size += sizeof (Elf32_External_Rela);
1915 eh->needs_copy = 1;
1916 }
1917
1918 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1919 }
1920
1921 /* Allocate space in the .plt for entries that won't have relocations.
1922 ie. plabel entries. */
1923
1924 static bfd_boolean
1925 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1926 {
1927 struct bfd_link_info *info;
1928 struct elf32_hppa_link_hash_table *htab;
1929 struct elf32_hppa_link_hash_entry *hh;
1930 asection *sec;
1931
1932 if (eh->root.type == bfd_link_hash_indirect)
1933 return TRUE;
1934
1935 info = (struct bfd_link_info *) inf;
1936 hh = hppa_elf_hash_entry (eh);
1937 htab = hppa_link_hash_table (info);
1938 if (htab == NULL)
1939 return FALSE;
1940
1941 if (htab->etab.dynamic_sections_created
1942 && eh->plt.refcount > 0)
1943 {
1944 /* Make sure this symbol is output as a dynamic symbol.
1945 Undefined weak syms won't yet be marked as dynamic. */
1946 if (eh->dynindx == -1
1947 && !eh->forced_local
1948 && eh->type != STT_PARISC_MILLI)
1949 {
1950 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
1951 return FALSE;
1952 }
1953
1954 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1955 {
1956 /* Allocate these later. From this point on, h->plabel
1957 means that the plt entry is only used by a plabel.
1958 We'll be using a normal plt entry for this symbol, so
1959 clear the plabel indicator. */
1960
1961 hh->plabel = 0;
1962 }
1963 else if (hh->plabel)
1964 {
1965 /* Make an entry in the .plt section for plabel references
1966 that won't have a .plt entry for other reasons. */
1967 sec = htab->etab.splt;
1968 eh->plt.offset = sec->size;
1969 sec->size += PLT_ENTRY_SIZE;
1970 }
1971 else
1972 {
1973 /* No .plt entry needed. */
1974 eh->plt.offset = (bfd_vma) -1;
1975 eh->needs_plt = 0;
1976 }
1977 }
1978 else
1979 {
1980 eh->plt.offset = (bfd_vma) -1;
1981 eh->needs_plt = 0;
1982 }
1983
1984 return TRUE;
1985 }
1986
1987 /* Allocate space in .plt, .got and associated reloc sections for
1988 global syms. */
1989
1990 static bfd_boolean
1991 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1992 {
1993 struct bfd_link_info *info;
1994 struct elf32_hppa_link_hash_table *htab;
1995 asection *sec;
1996 struct elf32_hppa_link_hash_entry *hh;
1997 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1998
1999 if (eh->root.type == bfd_link_hash_indirect)
2000 return TRUE;
2001
2002 info = inf;
2003 htab = hppa_link_hash_table (info);
2004 if (htab == NULL)
2005 return FALSE;
2006
2007 hh = hppa_elf_hash_entry (eh);
2008
2009 if (htab->etab.dynamic_sections_created
2010 && eh->plt.offset != (bfd_vma) -1
2011 && !hh->plabel
2012 && eh->plt.refcount > 0)
2013 {
2014 /* Make an entry in the .plt section. */
2015 sec = htab->etab.splt;
2016 eh->plt.offset = sec->size;
2017 sec->size += PLT_ENTRY_SIZE;
2018
2019 /* We also need to make an entry in the .rela.plt section. */
2020 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
2021 htab->need_plt_stub = 1;
2022 }
2023
2024 if (eh->got.refcount > 0)
2025 {
2026 /* Make sure this symbol is output as a dynamic symbol.
2027 Undefined weak syms won't yet be marked as dynamic. */
2028 if (eh->dynindx == -1
2029 && !eh->forced_local
2030 && eh->type != STT_PARISC_MILLI)
2031 {
2032 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2033 return FALSE;
2034 }
2035
2036 sec = htab->etab.sgot;
2037 eh->got.offset = sec->size;
2038 sec->size += GOT_ENTRY_SIZE;
2039 /* R_PARISC_TLS_GD* needs two GOT entries */
2040 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2041 sec->size += GOT_ENTRY_SIZE * 2;
2042 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2043 sec->size += GOT_ENTRY_SIZE;
2044 if (htab->etab.dynamic_sections_created
2045 && (bfd_link_pic (info)
2046 || (eh->dynindx != -1
2047 && !eh->forced_local)))
2048 {
2049 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2050 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2051 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2052 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2053 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2054 }
2055 }
2056 else
2057 eh->got.offset = (bfd_vma) -1;
2058
2059 if (hh->dyn_relocs == NULL)
2060 return TRUE;
2061
2062 /* If this is a -Bsymbolic shared link, then we need to discard all
2063 space allocated for dynamic pc-relative relocs against symbols
2064 defined in a regular object. For the normal shared case, discard
2065 space for relocs that have become local due to symbol visibility
2066 changes. */
2067 if (bfd_link_pic (info))
2068 {
2069 #if RELATIVE_DYNRELOCS
2070 if (SYMBOL_CALLS_LOCAL (info, eh))
2071 {
2072 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2073
2074 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2075 {
2076 hdh_p->count -= hdh_p->relative_count;
2077 hdh_p->relative_count = 0;
2078 if (hdh_p->count == 0)
2079 *hdh_pp = hdh_p->hdh_next;
2080 else
2081 hdh_pp = &hdh_p->hdh_next;
2082 }
2083 }
2084 #endif
2085
2086 /* Also discard relocs on undefined weak syms with non-default
2087 visibility. */
2088 if (hh->dyn_relocs != NULL
2089 && eh->root.type == bfd_link_hash_undefweak)
2090 {
2091 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2092 hh->dyn_relocs = NULL;
2093
2094 /* Make sure undefined weak symbols are output as a dynamic
2095 symbol in PIEs. */
2096 else if (eh->dynindx == -1
2097 && !eh->forced_local)
2098 {
2099 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2100 return FALSE;
2101 }
2102 }
2103 }
2104 else
2105 {
2106 /* For the non-shared case, discard space for relocs against
2107 symbols which turn out to need copy relocs or are not
2108 dynamic. */
2109
2110 if (!eh->non_got_ref
2111 && ((ELIMINATE_COPY_RELOCS
2112 && eh->def_dynamic
2113 && !eh->def_regular)
2114 || (htab->etab.dynamic_sections_created
2115 && (eh->root.type == bfd_link_hash_undefweak
2116 || eh->root.type == bfd_link_hash_undefined))))
2117 {
2118 /* Make sure this symbol is output as a dynamic symbol.
2119 Undefined weak syms won't yet be marked as dynamic. */
2120 if (eh->dynindx == -1
2121 && !eh->forced_local
2122 && eh->type != STT_PARISC_MILLI)
2123 {
2124 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2125 return FALSE;
2126 }
2127
2128 /* If that succeeded, we know we'll be keeping all the
2129 relocs. */
2130 if (eh->dynindx != -1)
2131 goto keep;
2132 }
2133
2134 hh->dyn_relocs = NULL;
2135 return TRUE;
2136
2137 keep: ;
2138 }
2139
2140 /* Finally, allocate space. */
2141 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2142 {
2143 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2144 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2145 }
2146
2147 return TRUE;
2148 }
2149
2150 /* This function is called via elf_link_hash_traverse to force
2151 millicode symbols local so they do not end up as globals in the
2152 dynamic symbol table. We ought to be able to do this in
2153 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2154 for all dynamic symbols. Arguably, this is a bug in
2155 elf_adjust_dynamic_symbol. */
2156
2157 static bfd_boolean
2158 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2159 struct bfd_link_info *info)
2160 {
2161 if (eh->type == STT_PARISC_MILLI
2162 && !eh->forced_local)
2163 {
2164 elf32_hppa_hide_symbol (info, eh, TRUE);
2165 }
2166 return TRUE;
2167 }
2168
2169 /* Find any dynamic relocs that apply to read-only sections. */
2170
2171 static bfd_boolean
2172 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2173 {
2174 struct elf32_hppa_link_hash_entry *hh;
2175 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2176
2177 hh = hppa_elf_hash_entry (eh);
2178 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2179 {
2180 asection *sec = hdh_p->sec->output_section;
2181
2182 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2183 {
2184 struct bfd_link_info *info = inf;
2185
2186 info->flags |= DF_TEXTREL;
2187
2188 /* Not an error, just cut short the traversal. */
2189 return FALSE;
2190 }
2191 }
2192 return TRUE;
2193 }
2194
2195 /* Set the sizes of the dynamic sections. */
2196
2197 static bfd_boolean
2198 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2199 struct bfd_link_info *info)
2200 {
2201 struct elf32_hppa_link_hash_table *htab;
2202 bfd *dynobj;
2203 bfd *ibfd;
2204 asection *sec;
2205 bfd_boolean relocs;
2206
2207 htab = hppa_link_hash_table (info);
2208 if (htab == NULL)
2209 return FALSE;
2210
2211 dynobj = htab->etab.dynobj;
2212 if (dynobj == NULL)
2213 abort ();
2214
2215 if (htab->etab.dynamic_sections_created)
2216 {
2217 /* Set the contents of the .interp section to the interpreter. */
2218 if (bfd_link_executable (info) && !info->nointerp)
2219 {
2220 sec = bfd_get_linker_section (dynobj, ".interp");
2221 if (sec == NULL)
2222 abort ();
2223 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2224 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2225 }
2226
2227 /* Force millicode symbols local. */
2228 elf_link_hash_traverse (&htab->etab,
2229 clobber_millicode_symbols,
2230 info);
2231 }
2232
2233 /* Set up .got and .plt offsets for local syms, and space for local
2234 dynamic relocs. */
2235 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2236 {
2237 bfd_signed_vma *local_got;
2238 bfd_signed_vma *end_local_got;
2239 bfd_signed_vma *local_plt;
2240 bfd_signed_vma *end_local_plt;
2241 bfd_size_type locsymcount;
2242 Elf_Internal_Shdr *symtab_hdr;
2243 asection *srel;
2244 char *local_tls_type;
2245
2246 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2247 continue;
2248
2249 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2250 {
2251 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2252
2253 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2254 elf_section_data (sec)->local_dynrel);
2255 hdh_p != NULL;
2256 hdh_p = hdh_p->hdh_next)
2257 {
2258 if (!bfd_is_abs_section (hdh_p->sec)
2259 && bfd_is_abs_section (hdh_p->sec->output_section))
2260 {
2261 /* Input section has been discarded, either because
2262 it is a copy of a linkonce section or due to
2263 linker script /DISCARD/, so we'll be discarding
2264 the relocs too. */
2265 }
2266 else if (hdh_p->count != 0)
2267 {
2268 srel = elf_section_data (hdh_p->sec)->sreloc;
2269 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2270 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2271 info->flags |= DF_TEXTREL;
2272 }
2273 }
2274 }
2275
2276 local_got = elf_local_got_refcounts (ibfd);
2277 if (!local_got)
2278 continue;
2279
2280 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2281 locsymcount = symtab_hdr->sh_info;
2282 end_local_got = local_got + locsymcount;
2283 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2284 sec = htab->etab.sgot;
2285 srel = htab->etab.srelgot;
2286 for (; local_got < end_local_got; ++local_got)
2287 {
2288 if (*local_got > 0)
2289 {
2290 *local_got = sec->size;
2291 sec->size += GOT_ENTRY_SIZE;
2292 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2293 sec->size += 2 * GOT_ENTRY_SIZE;
2294 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2295 sec->size += GOT_ENTRY_SIZE;
2296 if (bfd_link_pic (info))
2297 {
2298 srel->size += sizeof (Elf32_External_Rela);
2299 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2300 srel->size += 2 * sizeof (Elf32_External_Rela);
2301 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2302 srel->size += sizeof (Elf32_External_Rela);
2303 }
2304 }
2305 else
2306 *local_got = (bfd_vma) -1;
2307
2308 ++local_tls_type;
2309 }
2310
2311 local_plt = end_local_got;
2312 end_local_plt = local_plt + locsymcount;
2313 if (! htab->etab.dynamic_sections_created)
2314 {
2315 /* Won't be used, but be safe. */
2316 for (; local_plt < end_local_plt; ++local_plt)
2317 *local_plt = (bfd_vma) -1;
2318 }
2319 else
2320 {
2321 sec = htab->etab.splt;
2322 srel = htab->etab.srelplt;
2323 for (; local_plt < end_local_plt; ++local_plt)
2324 {
2325 if (*local_plt > 0)
2326 {
2327 *local_plt = sec->size;
2328 sec->size += PLT_ENTRY_SIZE;
2329 if (bfd_link_pic (info))
2330 srel->size += sizeof (Elf32_External_Rela);
2331 }
2332 else
2333 *local_plt = (bfd_vma) -1;
2334 }
2335 }
2336 }
2337
2338 if (htab->tls_ldm_got.refcount > 0)
2339 {
2340 /* Allocate 2 got entries and 1 dynamic reloc for
2341 R_PARISC_TLS_DTPMOD32 relocs. */
2342 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2343 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2344 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2345 }
2346 else
2347 htab->tls_ldm_got.offset = -1;
2348
2349 /* Do all the .plt entries without relocs first. The dynamic linker
2350 uses the last .plt reloc to find the end of the .plt (and hence
2351 the start of the .got) for lazy linking. */
2352 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2353
2354 /* Allocate global sym .plt and .got entries, and space for global
2355 sym dynamic relocs. */
2356 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2357
2358 /* The check_relocs and adjust_dynamic_symbol entry points have
2359 determined the sizes of the various dynamic sections. Allocate
2360 memory for them. */
2361 relocs = FALSE;
2362 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2363 {
2364 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2365 continue;
2366
2367 if (sec == htab->etab.splt)
2368 {
2369 if (htab->need_plt_stub)
2370 {
2371 /* Make space for the plt stub at the end of the .plt
2372 section. We want this stub right at the end, up
2373 against the .got section. */
2374 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2375 int pltalign = bfd_section_alignment (dynobj, sec);
2376 bfd_size_type mask;
2377
2378 if (gotalign > pltalign)
2379 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2380 mask = ((bfd_size_type) 1 << gotalign) - 1;
2381 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2382 }
2383 }
2384 else if (sec == htab->etab.sgot
2385 || sec == htab->etab.sdynbss
2386 || sec == htab->etab.sdynrelro)
2387 ;
2388 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2389 {
2390 if (sec->size != 0)
2391 {
2392 /* Remember whether there are any reloc sections other
2393 than .rela.plt. */
2394 if (sec != htab->etab.srelplt)
2395 relocs = TRUE;
2396
2397 /* We use the reloc_count field as a counter if we need
2398 to copy relocs into the output file. */
2399 sec->reloc_count = 0;
2400 }
2401 }
2402 else
2403 {
2404 /* It's not one of our sections, so don't allocate space. */
2405 continue;
2406 }
2407
2408 if (sec->size == 0)
2409 {
2410 /* If we don't need this section, strip it from the
2411 output file. This is mostly to handle .rela.bss and
2412 .rela.plt. We must create both sections in
2413 create_dynamic_sections, because they must be created
2414 before the linker maps input sections to output
2415 sections. The linker does that before
2416 adjust_dynamic_symbol is called, and it is that
2417 function which decides whether anything needs to go
2418 into these sections. */
2419 sec->flags |= SEC_EXCLUDE;
2420 continue;
2421 }
2422
2423 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2424 continue;
2425
2426 /* Allocate memory for the section contents. Zero it, because
2427 we may not fill in all the reloc sections. */
2428 sec->contents = bfd_zalloc (dynobj, sec->size);
2429 if (sec->contents == NULL)
2430 return FALSE;
2431 }
2432
2433 if (htab->etab.dynamic_sections_created)
2434 {
2435 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2436 actually has nothing to do with the PLT, it is how we
2437 communicate the LTP value of a load module to the dynamic
2438 linker. */
2439 #define add_dynamic_entry(TAG, VAL) \
2440 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2441
2442 if (!add_dynamic_entry (DT_PLTGOT, 0))
2443 return FALSE;
2444
2445 /* Add some entries to the .dynamic section. We fill in the
2446 values later, in elf32_hppa_finish_dynamic_sections, but we
2447 must add the entries now so that we get the correct size for
2448 the .dynamic section. The DT_DEBUG entry is filled in by the
2449 dynamic linker and used by the debugger. */
2450 if (bfd_link_executable (info))
2451 {
2452 if (!add_dynamic_entry (DT_DEBUG, 0))
2453 return FALSE;
2454 }
2455
2456 if (htab->etab.srelplt->size != 0)
2457 {
2458 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2459 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2460 || !add_dynamic_entry (DT_JMPREL, 0))
2461 return FALSE;
2462 }
2463
2464 if (relocs)
2465 {
2466 if (!add_dynamic_entry (DT_RELA, 0)
2467 || !add_dynamic_entry (DT_RELASZ, 0)
2468 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2469 return FALSE;
2470
2471 /* If any dynamic relocs apply to a read-only section,
2472 then we need a DT_TEXTREL entry. */
2473 if ((info->flags & DF_TEXTREL) == 0)
2474 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2475
2476 if ((info->flags & DF_TEXTREL) != 0)
2477 {
2478 if (!add_dynamic_entry (DT_TEXTREL, 0))
2479 return FALSE;
2480 }
2481 }
2482 }
2483 #undef add_dynamic_entry
2484
2485 return TRUE;
2486 }
2487
2488 /* External entry points for sizing and building linker stubs. */
2489
2490 /* Set up various things so that we can make a list of input sections
2491 for each output section included in the link. Returns -1 on error,
2492 0 when no stubs will be needed, and 1 on success. */
2493
2494 int
2495 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2496 {
2497 bfd *input_bfd;
2498 unsigned int bfd_count;
2499 unsigned int top_id, top_index;
2500 asection *section;
2501 asection **input_list, **list;
2502 bfd_size_type amt;
2503 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2504
2505 if (htab == NULL)
2506 return -1;
2507
2508 /* Count the number of input BFDs and find the top input section id. */
2509 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2510 input_bfd != NULL;
2511 input_bfd = input_bfd->link.next)
2512 {
2513 bfd_count += 1;
2514 for (section = input_bfd->sections;
2515 section != NULL;
2516 section = section->next)
2517 {
2518 if (top_id < section->id)
2519 top_id = section->id;
2520 }
2521 }
2522 htab->bfd_count = bfd_count;
2523
2524 amt = sizeof (struct map_stub) * (top_id + 1);
2525 htab->stub_group = bfd_zmalloc (amt);
2526 if (htab->stub_group == NULL)
2527 return -1;
2528
2529 /* We can't use output_bfd->section_count here to find the top output
2530 section index as some sections may have been removed, and
2531 strip_excluded_output_sections doesn't renumber the indices. */
2532 for (section = output_bfd->sections, top_index = 0;
2533 section != NULL;
2534 section = section->next)
2535 {
2536 if (top_index < section->index)
2537 top_index = section->index;
2538 }
2539
2540 htab->top_index = top_index;
2541 amt = sizeof (asection *) * (top_index + 1);
2542 input_list = bfd_malloc (amt);
2543 htab->input_list = input_list;
2544 if (input_list == NULL)
2545 return -1;
2546
2547 /* For sections we aren't interested in, mark their entries with a
2548 value we can check later. */
2549 list = input_list + top_index;
2550 do
2551 *list = bfd_abs_section_ptr;
2552 while (list-- != input_list);
2553
2554 for (section = output_bfd->sections;
2555 section != NULL;
2556 section = section->next)
2557 {
2558 if ((section->flags & SEC_CODE) != 0)
2559 input_list[section->index] = NULL;
2560 }
2561
2562 return 1;
2563 }
2564
2565 /* The linker repeatedly calls this function for each input section,
2566 in the order that input sections are linked into output sections.
2567 Build lists of input sections to determine groupings between which
2568 we may insert linker stubs. */
2569
2570 void
2571 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2572 {
2573 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2574
2575 if (htab == NULL)
2576 return;
2577
2578 if (isec->output_section->index <= htab->top_index)
2579 {
2580 asection **list = htab->input_list + isec->output_section->index;
2581 if (*list != bfd_abs_section_ptr)
2582 {
2583 /* Steal the link_sec pointer for our list. */
2584 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2585 /* This happens to make the list in reverse order,
2586 which is what we want. */
2587 PREV_SEC (isec) = *list;
2588 *list = isec;
2589 }
2590 }
2591 }
2592
2593 /* See whether we can group stub sections together. Grouping stub
2594 sections may result in fewer stubs. More importantly, we need to
2595 put all .init* and .fini* stubs at the beginning of the .init or
2596 .fini output sections respectively, because glibc splits the
2597 _init and _fini functions into multiple parts. Putting a stub in
2598 the middle of a function is not a good idea. */
2599
2600 static void
2601 group_sections (struct elf32_hppa_link_hash_table *htab,
2602 bfd_size_type stub_group_size,
2603 bfd_boolean stubs_always_before_branch)
2604 {
2605 asection **list = htab->input_list + htab->top_index;
2606 do
2607 {
2608 asection *tail = *list;
2609 if (tail == bfd_abs_section_ptr)
2610 continue;
2611 while (tail != NULL)
2612 {
2613 asection *curr;
2614 asection *prev;
2615 bfd_size_type total;
2616 bfd_boolean big_sec;
2617
2618 curr = tail;
2619 total = tail->size;
2620 big_sec = total >= stub_group_size;
2621
2622 while ((prev = PREV_SEC (curr)) != NULL
2623 && ((total += curr->output_offset - prev->output_offset)
2624 < stub_group_size))
2625 curr = prev;
2626
2627 /* OK, the size from the start of CURR to the end is less
2628 than 240000 bytes and thus can be handled by one stub
2629 section. (or the tail section is itself larger than
2630 240000 bytes, in which case we may be toast.)
2631 We should really be keeping track of the total size of
2632 stubs added here, as stubs contribute to the final output
2633 section size. That's a little tricky, and this way will
2634 only break if stubs added total more than 22144 bytes, or
2635 2768 long branch stubs. It seems unlikely for more than
2636 2768 different functions to be called, especially from
2637 code only 240000 bytes long. This limit used to be
2638 250000, but c++ code tends to generate lots of little
2639 functions, and sometimes violated the assumption. */
2640 do
2641 {
2642 prev = PREV_SEC (tail);
2643 /* Set up this stub group. */
2644 htab->stub_group[tail->id].link_sec = curr;
2645 }
2646 while (tail != curr && (tail = prev) != NULL);
2647
2648 /* But wait, there's more! Input sections up to 240000
2649 bytes before the stub section can be handled by it too.
2650 Don't do this if we have a really large section after the
2651 stubs, as adding more stubs increases the chance that
2652 branches may not reach into the stub section. */
2653 if (!stubs_always_before_branch && !big_sec)
2654 {
2655 total = 0;
2656 while (prev != NULL
2657 && ((total += tail->output_offset - prev->output_offset)
2658 < stub_group_size))
2659 {
2660 tail = prev;
2661 prev = PREV_SEC (tail);
2662 htab->stub_group[tail->id].link_sec = curr;
2663 }
2664 }
2665 tail = prev;
2666 }
2667 }
2668 while (list-- != htab->input_list);
2669 free (htab->input_list);
2670 #undef PREV_SEC
2671 }
2672
2673 /* Read in all local syms for all input bfds, and create hash entries
2674 for export stubs if we are building a multi-subspace shared lib.
2675 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2676
2677 static int
2678 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2679 {
2680 unsigned int bfd_indx;
2681 Elf_Internal_Sym *local_syms, **all_local_syms;
2682 int stub_changed = 0;
2683 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2684
2685 if (htab == NULL)
2686 return -1;
2687
2688 /* We want to read in symbol extension records only once. To do this
2689 we need to read in the local symbols in parallel and save them for
2690 later use; so hold pointers to the local symbols in an array. */
2691 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2692 all_local_syms = bfd_zmalloc (amt);
2693 htab->all_local_syms = all_local_syms;
2694 if (all_local_syms == NULL)
2695 return -1;
2696
2697 /* Walk over all the input BFDs, swapping in local symbols.
2698 If we are creating a shared library, create hash entries for the
2699 export stubs. */
2700 for (bfd_indx = 0;
2701 input_bfd != NULL;
2702 input_bfd = input_bfd->link.next, bfd_indx++)
2703 {
2704 Elf_Internal_Shdr *symtab_hdr;
2705
2706 /* We'll need the symbol table in a second. */
2707 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2708 if (symtab_hdr->sh_info == 0)
2709 continue;
2710
2711 /* We need an array of the local symbols attached to the input bfd. */
2712 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2713 if (local_syms == NULL)
2714 {
2715 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2716 symtab_hdr->sh_info, 0,
2717 NULL, NULL, NULL);
2718 /* Cache them for elf_link_input_bfd. */
2719 symtab_hdr->contents = (unsigned char *) local_syms;
2720 }
2721 if (local_syms == NULL)
2722 return -1;
2723
2724 all_local_syms[bfd_indx] = local_syms;
2725
2726 if (bfd_link_pic (info) && htab->multi_subspace)
2727 {
2728 struct elf_link_hash_entry **eh_syms;
2729 struct elf_link_hash_entry **eh_symend;
2730 unsigned int symcount;
2731
2732 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2733 - symtab_hdr->sh_info);
2734 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2735 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2736
2737 /* Look through the global syms for functions; We need to
2738 build export stubs for all globally visible functions. */
2739 for (; eh_syms < eh_symend; eh_syms++)
2740 {
2741 struct elf32_hppa_link_hash_entry *hh;
2742
2743 hh = hppa_elf_hash_entry (*eh_syms);
2744
2745 while (hh->eh.root.type == bfd_link_hash_indirect
2746 || hh->eh.root.type == bfd_link_hash_warning)
2747 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2748
2749 /* At this point in the link, undefined syms have been
2750 resolved, so we need to check that the symbol was
2751 defined in this BFD. */
2752 if ((hh->eh.root.type == bfd_link_hash_defined
2753 || hh->eh.root.type == bfd_link_hash_defweak)
2754 && hh->eh.type == STT_FUNC
2755 && hh->eh.root.u.def.section->output_section != NULL
2756 && (hh->eh.root.u.def.section->output_section->owner
2757 == output_bfd)
2758 && hh->eh.root.u.def.section->owner == input_bfd
2759 && hh->eh.def_regular
2760 && !hh->eh.forced_local
2761 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2762 {
2763 asection *sec;
2764 const char *stub_name;
2765 struct elf32_hppa_stub_hash_entry *hsh;
2766
2767 sec = hh->eh.root.u.def.section;
2768 stub_name = hh_name (hh);
2769 hsh = hppa_stub_hash_lookup (&htab->bstab,
2770 stub_name,
2771 FALSE, FALSE);
2772 if (hsh == NULL)
2773 {
2774 hsh = hppa_add_stub (stub_name, sec, htab);
2775 if (!hsh)
2776 return -1;
2777
2778 hsh->target_value = hh->eh.root.u.def.value;
2779 hsh->target_section = hh->eh.root.u.def.section;
2780 hsh->stub_type = hppa_stub_export;
2781 hsh->hh = hh;
2782 stub_changed = 1;
2783 }
2784 else
2785 {
2786 /* xgettext:c-format */
2787 _bfd_error_handler (_("%B: duplicate export stub %s"),
2788 input_bfd, stub_name);
2789 }
2790 }
2791 }
2792 }
2793 }
2794
2795 return stub_changed;
2796 }
2797
2798 /* Determine and set the size of the stub section for a final link.
2799
2800 The basic idea here is to examine all the relocations looking for
2801 PC-relative calls to a target that is unreachable with a "bl"
2802 instruction. */
2803
2804 bfd_boolean
2805 elf32_hppa_size_stubs
2806 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2807 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2808 asection * (*add_stub_section) (const char *, asection *),
2809 void (*layout_sections_again) (void))
2810 {
2811 bfd_size_type stub_group_size;
2812 bfd_boolean stubs_always_before_branch;
2813 bfd_boolean stub_changed;
2814 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2815
2816 if (htab == NULL)
2817 return FALSE;
2818
2819 /* Stash our params away. */
2820 htab->stub_bfd = stub_bfd;
2821 htab->multi_subspace = multi_subspace;
2822 htab->add_stub_section = add_stub_section;
2823 htab->layout_sections_again = layout_sections_again;
2824 stubs_always_before_branch = group_size < 0;
2825 if (group_size < 0)
2826 stub_group_size = -group_size;
2827 else
2828 stub_group_size = group_size;
2829 if (stub_group_size == 1)
2830 {
2831 /* Default values. */
2832 if (stubs_always_before_branch)
2833 {
2834 stub_group_size = 7680000;
2835 if (htab->has_17bit_branch || htab->multi_subspace)
2836 stub_group_size = 240000;
2837 if (htab->has_12bit_branch)
2838 stub_group_size = 7500;
2839 }
2840 else
2841 {
2842 stub_group_size = 6971392;
2843 if (htab->has_17bit_branch || htab->multi_subspace)
2844 stub_group_size = 217856;
2845 if (htab->has_12bit_branch)
2846 stub_group_size = 6808;
2847 }
2848 }
2849
2850 group_sections (htab, stub_group_size, stubs_always_before_branch);
2851
2852 switch (get_local_syms (output_bfd, info->input_bfds, info))
2853 {
2854 default:
2855 if (htab->all_local_syms)
2856 goto error_ret_free_local;
2857 return FALSE;
2858
2859 case 0:
2860 stub_changed = FALSE;
2861 break;
2862
2863 case 1:
2864 stub_changed = TRUE;
2865 break;
2866 }
2867
2868 while (1)
2869 {
2870 bfd *input_bfd;
2871 unsigned int bfd_indx;
2872 asection *stub_sec;
2873
2874 for (input_bfd = info->input_bfds, bfd_indx = 0;
2875 input_bfd != NULL;
2876 input_bfd = input_bfd->link.next, bfd_indx++)
2877 {
2878 Elf_Internal_Shdr *symtab_hdr;
2879 asection *section;
2880 Elf_Internal_Sym *local_syms;
2881
2882 /* We'll need the symbol table in a second. */
2883 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2884 if (symtab_hdr->sh_info == 0)
2885 continue;
2886
2887 local_syms = htab->all_local_syms[bfd_indx];
2888
2889 /* Walk over each section attached to the input bfd. */
2890 for (section = input_bfd->sections;
2891 section != NULL;
2892 section = section->next)
2893 {
2894 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2895
2896 /* If there aren't any relocs, then there's nothing more
2897 to do. */
2898 if ((section->flags & SEC_RELOC) == 0
2899 || section->reloc_count == 0)
2900 continue;
2901
2902 /* If this section is a link-once section that will be
2903 discarded, then don't create any stubs. */
2904 if (section->output_section == NULL
2905 || section->output_section->owner != output_bfd)
2906 continue;
2907
2908 /* Get the relocs. */
2909 internal_relocs
2910 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2911 info->keep_memory);
2912 if (internal_relocs == NULL)
2913 goto error_ret_free_local;
2914
2915 /* Now examine each relocation. */
2916 irela = internal_relocs;
2917 irelaend = irela + section->reloc_count;
2918 for (; irela < irelaend; irela++)
2919 {
2920 unsigned int r_type, r_indx;
2921 enum elf32_hppa_stub_type stub_type;
2922 struct elf32_hppa_stub_hash_entry *hsh;
2923 asection *sym_sec;
2924 bfd_vma sym_value;
2925 bfd_vma destination;
2926 struct elf32_hppa_link_hash_entry *hh;
2927 char *stub_name;
2928 const asection *id_sec;
2929
2930 r_type = ELF32_R_TYPE (irela->r_info);
2931 r_indx = ELF32_R_SYM (irela->r_info);
2932
2933 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2934 {
2935 bfd_set_error (bfd_error_bad_value);
2936 error_ret_free_internal:
2937 if (elf_section_data (section)->relocs == NULL)
2938 free (internal_relocs);
2939 goto error_ret_free_local;
2940 }
2941
2942 /* Only look for stubs on call instructions. */
2943 if (r_type != (unsigned int) R_PARISC_PCREL12F
2944 && r_type != (unsigned int) R_PARISC_PCREL17F
2945 && r_type != (unsigned int) R_PARISC_PCREL22F)
2946 continue;
2947
2948 /* Now determine the call target, its name, value,
2949 section. */
2950 sym_sec = NULL;
2951 sym_value = 0;
2952 destination = 0;
2953 hh = NULL;
2954 if (r_indx < symtab_hdr->sh_info)
2955 {
2956 /* It's a local symbol. */
2957 Elf_Internal_Sym *sym;
2958 Elf_Internal_Shdr *hdr;
2959 unsigned int shndx;
2960
2961 sym = local_syms + r_indx;
2962 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2963 sym_value = sym->st_value;
2964 shndx = sym->st_shndx;
2965 if (shndx < elf_numsections (input_bfd))
2966 {
2967 hdr = elf_elfsections (input_bfd)[shndx];
2968 sym_sec = hdr->bfd_section;
2969 destination = (sym_value + irela->r_addend
2970 + sym_sec->output_offset
2971 + sym_sec->output_section->vma);
2972 }
2973 }
2974 else
2975 {
2976 /* It's an external symbol. */
2977 int e_indx;
2978
2979 e_indx = r_indx - symtab_hdr->sh_info;
2980 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2981
2982 while (hh->eh.root.type == bfd_link_hash_indirect
2983 || hh->eh.root.type == bfd_link_hash_warning)
2984 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2985
2986 if (hh->eh.root.type == bfd_link_hash_defined
2987 || hh->eh.root.type == bfd_link_hash_defweak)
2988 {
2989 sym_sec = hh->eh.root.u.def.section;
2990 sym_value = hh->eh.root.u.def.value;
2991 if (sym_sec->output_section != NULL)
2992 destination = (sym_value + irela->r_addend
2993 + sym_sec->output_offset
2994 + sym_sec->output_section->vma);
2995 }
2996 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2997 {
2998 if (! bfd_link_pic (info))
2999 continue;
3000 }
3001 else if (hh->eh.root.type == bfd_link_hash_undefined)
3002 {
3003 if (! (info->unresolved_syms_in_objects == RM_IGNORE
3004 && (ELF_ST_VISIBILITY (hh->eh.other)
3005 == STV_DEFAULT)
3006 && hh->eh.type != STT_PARISC_MILLI))
3007 continue;
3008 }
3009 else
3010 {
3011 bfd_set_error (bfd_error_bad_value);
3012 goto error_ret_free_internal;
3013 }
3014 }
3015
3016 /* Determine what (if any) linker stub is needed. */
3017 stub_type = hppa_type_of_stub (section, irela, hh,
3018 destination, info);
3019 if (stub_type == hppa_stub_none)
3020 continue;
3021
3022 /* Support for grouping stub sections. */
3023 id_sec = htab->stub_group[section->id].link_sec;
3024
3025 /* Get the name of this stub. */
3026 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3027 if (!stub_name)
3028 goto error_ret_free_internal;
3029
3030 hsh = hppa_stub_hash_lookup (&htab->bstab,
3031 stub_name,
3032 FALSE, FALSE);
3033 if (hsh != NULL)
3034 {
3035 /* The proper stub has already been created. */
3036 free (stub_name);
3037 continue;
3038 }
3039
3040 hsh = hppa_add_stub (stub_name, section, htab);
3041 if (hsh == NULL)
3042 {
3043 free (stub_name);
3044 goto error_ret_free_internal;
3045 }
3046
3047 hsh->target_value = sym_value;
3048 hsh->target_section = sym_sec;
3049 hsh->stub_type = stub_type;
3050 if (bfd_link_pic (info))
3051 {
3052 if (stub_type == hppa_stub_import)
3053 hsh->stub_type = hppa_stub_import_shared;
3054 else if (stub_type == hppa_stub_long_branch)
3055 hsh->stub_type = hppa_stub_long_branch_shared;
3056 }
3057 hsh->hh = hh;
3058 stub_changed = TRUE;
3059 }
3060
3061 /* We're done with the internal relocs, free them. */
3062 if (elf_section_data (section)->relocs == NULL)
3063 free (internal_relocs);
3064 }
3065 }
3066
3067 if (!stub_changed)
3068 break;
3069
3070 /* OK, we've added some stubs. Find out the new size of the
3071 stub sections. */
3072 for (stub_sec = htab->stub_bfd->sections;
3073 stub_sec != NULL;
3074 stub_sec = stub_sec->next)
3075 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
3076 stub_sec->size = 0;
3077
3078 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3079
3080 /* Ask the linker to do its stuff. */
3081 (*htab->layout_sections_again) ();
3082 stub_changed = FALSE;
3083 }
3084
3085 free (htab->all_local_syms);
3086 return TRUE;
3087
3088 error_ret_free_local:
3089 free (htab->all_local_syms);
3090 return FALSE;
3091 }
3092
3093 /* For a final link, this function is called after we have sized the
3094 stubs to provide a value for __gp. */
3095
3096 bfd_boolean
3097 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3098 {
3099 struct bfd_link_hash_entry *h;
3100 asection *sec = NULL;
3101 bfd_vma gp_val = 0;
3102 struct elf32_hppa_link_hash_table *htab;
3103
3104 htab = hppa_link_hash_table (info);
3105 if (htab == NULL)
3106 return FALSE;
3107
3108 h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE);
3109
3110 if (h != NULL
3111 && (h->type == bfd_link_hash_defined
3112 || h->type == bfd_link_hash_defweak))
3113 {
3114 gp_val = h->u.def.value;
3115 sec = h->u.def.section;
3116 }
3117 else
3118 {
3119 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3120 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3121
3122 /* Choose to point our LTP at, in this order, one of .plt, .got,
3123 or .data, if these sections exist. In the case of choosing
3124 .plt try to make the LTP ideal for addressing anywhere in the
3125 .plt or .got with a 14 bit signed offset. Typically, the end
3126 of the .plt is the start of the .got, so choose .plt + 0x2000
3127 if either the .plt or .got is larger than 0x2000. If both
3128 the .plt and .got are smaller than 0x2000, choose the end of
3129 the .plt section. */
3130 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3131 ? NULL : splt;
3132 if (sec != NULL)
3133 {
3134 gp_val = sec->size;
3135 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3136 {
3137 gp_val = 0x2000;
3138 }
3139 }
3140 else
3141 {
3142 sec = sgot;
3143 if (sec != NULL)
3144 {
3145 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3146 {
3147 /* We know we don't have a .plt. If .got is large,
3148 offset our LTP. */
3149 if (sec->size > 0x2000)
3150 gp_val = 0x2000;
3151 }
3152 }
3153 else
3154 {
3155 /* No .plt or .got. Who cares what the LTP is? */
3156 sec = bfd_get_section_by_name (abfd, ".data");
3157 }
3158 }
3159
3160 if (h != NULL)
3161 {
3162 h->type = bfd_link_hash_defined;
3163 h->u.def.value = gp_val;
3164 if (sec != NULL)
3165 h->u.def.section = sec;
3166 else
3167 h->u.def.section = bfd_abs_section_ptr;
3168 }
3169 }
3170
3171 if (sec != NULL && sec->output_section != NULL)
3172 gp_val += sec->output_section->vma + sec->output_offset;
3173
3174 elf_gp (abfd) = gp_val;
3175 return TRUE;
3176 }
3177
3178 /* Build all the stubs associated with the current output file. The
3179 stubs are kept in a hash table attached to the main linker hash
3180 table. We also set up the .plt entries for statically linked PIC
3181 functions here. This function is called via hppaelf_finish in the
3182 linker. */
3183
3184 bfd_boolean
3185 elf32_hppa_build_stubs (struct bfd_link_info *info)
3186 {
3187 asection *stub_sec;
3188 struct bfd_hash_table *table;
3189 struct elf32_hppa_link_hash_table *htab;
3190
3191 htab = hppa_link_hash_table (info);
3192 if (htab == NULL)
3193 return FALSE;
3194
3195 for (stub_sec = htab->stub_bfd->sections;
3196 stub_sec != NULL;
3197 stub_sec = stub_sec->next)
3198 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3199 && stub_sec->size != 0)
3200 {
3201 /* Allocate memory to hold the linker stubs. */
3202 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3203 if (stub_sec->contents == NULL)
3204 return FALSE;
3205 stub_sec->size = 0;
3206 }
3207
3208 /* Build the stubs as directed by the stub hash table. */
3209 table = &htab->bstab;
3210 bfd_hash_traverse (table, hppa_build_one_stub, info);
3211
3212 return TRUE;
3213 }
3214
3215 /* Return the base vma address which should be subtracted from the real
3216 address when resolving a dtpoff relocation.
3217 This is PT_TLS segment p_vaddr. */
3218
3219 static bfd_vma
3220 dtpoff_base (struct bfd_link_info *info)
3221 {
3222 /* If tls_sec is NULL, we should have signalled an error already. */
3223 if (elf_hash_table (info)->tls_sec == NULL)
3224 return 0;
3225 return elf_hash_table (info)->tls_sec->vma;
3226 }
3227
3228 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3229
3230 static bfd_vma
3231 tpoff (struct bfd_link_info *info, bfd_vma address)
3232 {
3233 struct elf_link_hash_table *htab = elf_hash_table (info);
3234
3235 /* If tls_sec is NULL, we should have signalled an error already. */
3236 if (htab->tls_sec == NULL)
3237 return 0;
3238 /* hppa TLS ABI is variant I and static TLS block start just after
3239 tcbhead structure which has 2 pointer fields. */
3240 return (address - htab->tls_sec->vma
3241 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3242 }
3243
3244 /* Perform a final link. */
3245
3246 static bfd_boolean
3247 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3248 {
3249 struct stat buf;
3250
3251 /* Invoke the regular ELF linker to do all the work. */
3252 if (!bfd_elf_final_link (abfd, info))
3253 return FALSE;
3254
3255 /* If we're producing a final executable, sort the contents of the
3256 unwind section. */
3257 if (bfd_link_relocatable (info))
3258 return TRUE;
3259
3260 /* Do not attempt to sort non-regular files. This is here
3261 especially for configure scripts and kernel builds which run
3262 tests with "ld [...] -o /dev/null". */
3263 if (stat (abfd->filename, &buf) != 0
3264 || !S_ISREG(buf.st_mode))
3265 return TRUE;
3266
3267 return elf_hppa_sort_unwind (abfd);
3268 }
3269
3270 /* Record the lowest address for the data and text segments. */
3271
3272 static void
3273 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3274 {
3275 struct elf32_hppa_link_hash_table *htab;
3276
3277 htab = (struct elf32_hppa_link_hash_table*) data;
3278 if (htab == NULL)
3279 return;
3280
3281 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3282 {
3283 bfd_vma value;
3284 Elf_Internal_Phdr *p;
3285
3286 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3287 BFD_ASSERT (p != NULL);
3288 value = p->p_vaddr;
3289
3290 if ((section->flags & SEC_READONLY) != 0)
3291 {
3292 if (value < htab->text_segment_base)
3293 htab->text_segment_base = value;
3294 }
3295 else
3296 {
3297 if (value < htab->data_segment_base)
3298 htab->data_segment_base = value;
3299 }
3300 }
3301 }
3302
3303 /* Perform a relocation as part of a final link. */
3304
3305 static bfd_reloc_status_type
3306 final_link_relocate (asection *input_section,
3307 bfd_byte *contents,
3308 const Elf_Internal_Rela *rela,
3309 bfd_vma value,
3310 struct elf32_hppa_link_hash_table *htab,
3311 asection *sym_sec,
3312 struct elf32_hppa_link_hash_entry *hh,
3313 struct bfd_link_info *info)
3314 {
3315 int insn;
3316 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3317 unsigned int orig_r_type = r_type;
3318 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3319 int r_format = howto->bitsize;
3320 enum hppa_reloc_field_selector_type_alt r_field;
3321 bfd *input_bfd = input_section->owner;
3322 bfd_vma offset = rela->r_offset;
3323 bfd_vma max_branch_offset = 0;
3324 bfd_byte *hit_data = contents + offset;
3325 bfd_signed_vma addend = rela->r_addend;
3326 bfd_vma location;
3327 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3328 int val;
3329
3330 if (r_type == R_PARISC_NONE)
3331 return bfd_reloc_ok;
3332
3333 insn = bfd_get_32 (input_bfd, hit_data);
3334
3335 /* Find out where we are and where we're going. */
3336 location = (offset +
3337 input_section->output_offset +
3338 input_section->output_section->vma);
3339
3340 /* If we are not building a shared library, convert DLTIND relocs to
3341 DPREL relocs. */
3342 if (!bfd_link_pic (info))
3343 {
3344 switch (r_type)
3345 {
3346 case R_PARISC_DLTIND21L:
3347 case R_PARISC_TLS_GD21L:
3348 case R_PARISC_TLS_LDM21L:
3349 case R_PARISC_TLS_IE21L:
3350 r_type = R_PARISC_DPREL21L;
3351 break;
3352
3353 case R_PARISC_DLTIND14R:
3354 case R_PARISC_TLS_GD14R:
3355 case R_PARISC_TLS_LDM14R:
3356 case R_PARISC_TLS_IE14R:
3357 r_type = R_PARISC_DPREL14R;
3358 break;
3359
3360 case R_PARISC_DLTIND14F:
3361 r_type = R_PARISC_DPREL14F;
3362 break;
3363 }
3364 }
3365
3366 switch (r_type)
3367 {
3368 case R_PARISC_PCREL12F:
3369 case R_PARISC_PCREL17F:
3370 case R_PARISC_PCREL22F:
3371 /* If this call should go via the plt, find the import stub in
3372 the stub hash. */
3373 if (sym_sec == NULL
3374 || sym_sec->output_section == NULL
3375 || (hh != NULL
3376 && hh->eh.plt.offset != (bfd_vma) -1
3377 && hh->eh.dynindx != -1
3378 && !hh->plabel
3379 && (bfd_link_pic (info)
3380 || !hh->eh.def_regular
3381 || hh->eh.root.type == bfd_link_hash_defweak)))
3382 {
3383 hsh = hppa_get_stub_entry (input_section, sym_sec,
3384 hh, rela, htab);
3385 if (hsh != NULL)
3386 {
3387 value = (hsh->stub_offset
3388 + hsh->stub_sec->output_offset
3389 + hsh->stub_sec->output_section->vma);
3390 addend = 0;
3391 }
3392 else if (sym_sec == NULL && hh != NULL
3393 && hh->eh.root.type == bfd_link_hash_undefweak)
3394 {
3395 /* It's OK if undefined weak. Calls to undefined weak
3396 symbols behave as if the "called" function
3397 immediately returns. We can thus call to a weak
3398 function without first checking whether the function
3399 is defined. */
3400 value = location;
3401 addend = 8;
3402 }
3403 else
3404 return bfd_reloc_undefined;
3405 }
3406 /* Fall thru. */
3407
3408 case R_PARISC_PCREL21L:
3409 case R_PARISC_PCREL17C:
3410 case R_PARISC_PCREL17R:
3411 case R_PARISC_PCREL14R:
3412 case R_PARISC_PCREL14F:
3413 case R_PARISC_PCREL32:
3414 /* Make it a pc relative offset. */
3415 value -= location;
3416 addend -= 8;
3417 break;
3418
3419 case R_PARISC_DPREL21L:
3420 case R_PARISC_DPREL14R:
3421 case R_PARISC_DPREL14F:
3422 /* Convert instructions that use the linkage table pointer (r19) to
3423 instructions that use the global data pointer (dp). This is the
3424 most efficient way of using PIC code in an incomplete executable,
3425 but the user must follow the standard runtime conventions for
3426 accessing data for this to work. */
3427 if (orig_r_type != r_type)
3428 {
3429 if (r_type == R_PARISC_DPREL21L)
3430 {
3431 /* GCC sometimes uses a register other than r19 for the
3432 operation, so we must convert any addil instruction
3433 that uses this relocation. */
3434 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3435 insn = ADDIL_DP;
3436 else
3437 /* We must have a ldil instruction. It's too hard to find
3438 and convert the associated add instruction, so issue an
3439 error. */
3440 _bfd_error_handler
3441 /* xgettext:c-format */
3442 (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3443 input_bfd,
3444 input_section,
3445 (long) offset,
3446 howto->name,
3447 insn);
3448 }
3449 else if (r_type == R_PARISC_DPREL14F)
3450 {
3451 /* This must be a format 1 load/store. Change the base
3452 register to dp. */
3453 insn = (insn & 0xfc1ffff) | (27 << 21);
3454 }
3455 }
3456
3457 /* For all the DP relative relocations, we need to examine the symbol's
3458 section. If it has no section or if it's a code section, then
3459 "data pointer relative" makes no sense. In that case we don't
3460 adjust the "value", and for 21 bit addil instructions, we change the
3461 source addend register from %dp to %r0. This situation commonly
3462 arises for undefined weak symbols and when a variable's "constness"
3463 is declared differently from the way the variable is defined. For
3464 instance: "extern int foo" with foo defined as "const int foo". */
3465 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3466 {
3467 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3468 == (((int) OP_ADDIL << 26) | (27 << 21)))
3469 {
3470 insn &= ~ (0x1f << 21);
3471 }
3472 /* Now try to make things easy for the dynamic linker. */
3473
3474 break;
3475 }
3476 /* Fall thru. */
3477
3478 case R_PARISC_DLTIND21L:
3479 case R_PARISC_DLTIND14R:
3480 case R_PARISC_DLTIND14F:
3481 case R_PARISC_TLS_GD21L:
3482 case R_PARISC_TLS_LDM21L:
3483 case R_PARISC_TLS_IE21L:
3484 case R_PARISC_TLS_GD14R:
3485 case R_PARISC_TLS_LDM14R:
3486 case R_PARISC_TLS_IE14R:
3487 value -= elf_gp (input_section->output_section->owner);
3488 break;
3489
3490 case R_PARISC_SEGREL32:
3491 if ((sym_sec->flags & SEC_CODE) != 0)
3492 value -= htab->text_segment_base;
3493 else
3494 value -= htab->data_segment_base;
3495 break;
3496
3497 default:
3498 break;
3499 }
3500
3501 switch (r_type)
3502 {
3503 case R_PARISC_DIR32:
3504 case R_PARISC_DIR14F:
3505 case R_PARISC_DIR17F:
3506 case R_PARISC_PCREL17C:
3507 case R_PARISC_PCREL14F:
3508 case R_PARISC_PCREL32:
3509 case R_PARISC_DPREL14F:
3510 case R_PARISC_PLABEL32:
3511 case R_PARISC_DLTIND14F:
3512 case R_PARISC_SEGBASE:
3513 case R_PARISC_SEGREL32:
3514 case R_PARISC_TLS_DTPMOD32:
3515 case R_PARISC_TLS_DTPOFF32:
3516 case R_PARISC_TLS_TPREL32:
3517 r_field = e_fsel;
3518 break;
3519
3520 case R_PARISC_DLTIND21L:
3521 case R_PARISC_PCREL21L:
3522 case R_PARISC_PLABEL21L:
3523 r_field = e_lsel;
3524 break;
3525
3526 case R_PARISC_DIR21L:
3527 case R_PARISC_DPREL21L:
3528 case R_PARISC_TLS_GD21L:
3529 case R_PARISC_TLS_LDM21L:
3530 case R_PARISC_TLS_LDO21L:
3531 case R_PARISC_TLS_IE21L:
3532 case R_PARISC_TLS_LE21L:
3533 r_field = e_lrsel;
3534 break;
3535
3536 case R_PARISC_PCREL17R:
3537 case R_PARISC_PCREL14R:
3538 case R_PARISC_PLABEL14R:
3539 case R_PARISC_DLTIND14R:
3540 r_field = e_rsel;
3541 break;
3542
3543 case R_PARISC_DIR17R:
3544 case R_PARISC_DIR14R:
3545 case R_PARISC_DPREL14R:
3546 case R_PARISC_TLS_GD14R:
3547 case R_PARISC_TLS_LDM14R:
3548 case R_PARISC_TLS_LDO14R:
3549 case R_PARISC_TLS_IE14R:
3550 case R_PARISC_TLS_LE14R:
3551 r_field = e_rrsel;
3552 break;
3553
3554 case R_PARISC_PCREL12F:
3555 case R_PARISC_PCREL17F:
3556 case R_PARISC_PCREL22F:
3557 r_field = e_fsel;
3558
3559 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3560 {
3561 max_branch_offset = (1 << (17-1)) << 2;
3562 }
3563 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3564 {
3565 max_branch_offset = (1 << (12-1)) << 2;
3566 }
3567 else
3568 {
3569 max_branch_offset = (1 << (22-1)) << 2;
3570 }
3571
3572 /* sym_sec is NULL on undefined weak syms or when shared on
3573 undefined syms. We've already checked for a stub for the
3574 shared undefined case. */
3575 if (sym_sec == NULL)
3576 break;
3577
3578 /* If the branch is out of reach, then redirect the
3579 call to the local stub for this function. */
3580 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3581 {
3582 hsh = hppa_get_stub_entry (input_section, sym_sec,
3583 hh, rela, htab);
3584 if (hsh == NULL)
3585 return bfd_reloc_undefined;
3586
3587 /* Munge up the value and addend so that we call the stub
3588 rather than the procedure directly. */
3589 value = (hsh->stub_offset
3590 + hsh->stub_sec->output_offset
3591 + hsh->stub_sec->output_section->vma
3592 - location);
3593 addend = -8;
3594 }
3595 break;
3596
3597 /* Something we don't know how to handle. */
3598 default:
3599 return bfd_reloc_notsupported;
3600 }
3601
3602 /* Make sure we can reach the stub. */
3603 if (max_branch_offset != 0
3604 && value + addend + max_branch_offset >= 2*max_branch_offset)
3605 {
3606 _bfd_error_handler
3607 /* xgettext:c-format */
3608 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3609 input_bfd,
3610 input_section,
3611 (long) offset,
3612 hsh->bh_root.string);
3613 bfd_set_error (bfd_error_bad_value);
3614 return bfd_reloc_notsupported;
3615 }
3616
3617 val = hppa_field_adjust (value, addend, r_field);
3618
3619 switch (r_type)
3620 {
3621 case R_PARISC_PCREL12F:
3622 case R_PARISC_PCREL17C:
3623 case R_PARISC_PCREL17F:
3624 case R_PARISC_PCREL17R:
3625 case R_PARISC_PCREL22F:
3626 case R_PARISC_DIR17F:
3627 case R_PARISC_DIR17R:
3628 /* This is a branch. Divide the offset by four.
3629 Note that we need to decide whether it's a branch or
3630 otherwise by inspecting the reloc. Inspecting insn won't
3631 work as insn might be from a .word directive. */
3632 val >>= 2;
3633 break;
3634
3635 default:
3636 break;
3637 }
3638
3639 insn = hppa_rebuild_insn (insn, val, r_format);
3640
3641 /* Update the instruction word. */
3642 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3643 return bfd_reloc_ok;
3644 }
3645
3646 /* Relocate an HPPA ELF section. */
3647
3648 static bfd_boolean
3649 elf32_hppa_relocate_section (bfd *output_bfd,
3650 struct bfd_link_info *info,
3651 bfd *input_bfd,
3652 asection *input_section,
3653 bfd_byte *contents,
3654 Elf_Internal_Rela *relocs,
3655 Elf_Internal_Sym *local_syms,
3656 asection **local_sections)
3657 {
3658 bfd_vma *local_got_offsets;
3659 struct elf32_hppa_link_hash_table *htab;
3660 Elf_Internal_Shdr *symtab_hdr;
3661 Elf_Internal_Rela *rela;
3662 Elf_Internal_Rela *relend;
3663
3664 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3665
3666 htab = hppa_link_hash_table (info);
3667 if (htab == NULL)
3668 return FALSE;
3669
3670 local_got_offsets = elf_local_got_offsets (input_bfd);
3671
3672 rela = relocs;
3673 relend = relocs + input_section->reloc_count;
3674 for (; rela < relend; rela++)
3675 {
3676 unsigned int r_type;
3677 reloc_howto_type *howto;
3678 unsigned int r_symndx;
3679 struct elf32_hppa_link_hash_entry *hh;
3680 Elf_Internal_Sym *sym;
3681 asection *sym_sec;
3682 bfd_vma relocation;
3683 bfd_reloc_status_type rstatus;
3684 const char *sym_name;
3685 bfd_boolean plabel;
3686 bfd_boolean warned_undef;
3687
3688 r_type = ELF32_R_TYPE (rela->r_info);
3689 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3690 {
3691 bfd_set_error (bfd_error_bad_value);
3692 return FALSE;
3693 }
3694 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3695 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3696 continue;
3697
3698 r_symndx = ELF32_R_SYM (rela->r_info);
3699 hh = NULL;
3700 sym = NULL;
3701 sym_sec = NULL;
3702 warned_undef = FALSE;
3703 if (r_symndx < symtab_hdr->sh_info)
3704 {
3705 /* This is a local symbol, h defaults to NULL. */
3706 sym = local_syms + r_symndx;
3707 sym_sec = local_sections[r_symndx];
3708 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3709 }
3710 else
3711 {
3712 struct elf_link_hash_entry *eh;
3713 bfd_boolean unresolved_reloc, ignored;
3714 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3715
3716 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3717 r_symndx, symtab_hdr, sym_hashes,
3718 eh, sym_sec, relocation,
3719 unresolved_reloc, warned_undef,
3720 ignored);
3721
3722 if (!bfd_link_relocatable (info)
3723 && relocation == 0
3724 && eh->root.type != bfd_link_hash_defined
3725 && eh->root.type != bfd_link_hash_defweak
3726 && eh->root.type != bfd_link_hash_undefweak)
3727 {
3728 if (info->unresolved_syms_in_objects == RM_IGNORE
3729 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3730 && eh->type == STT_PARISC_MILLI)
3731 {
3732 (*info->callbacks->undefined_symbol)
3733 (info, eh_name (eh), input_bfd,
3734 input_section, rela->r_offset, FALSE);
3735 warned_undef = TRUE;
3736 }
3737 }
3738 hh = hppa_elf_hash_entry (eh);
3739 }
3740
3741 if (sym_sec != NULL && discarded_section (sym_sec))
3742 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3743 rela, 1, relend,
3744 elf_hppa_howto_table + r_type, 0,
3745 contents);
3746
3747 if (bfd_link_relocatable (info))
3748 continue;
3749
3750 /* Do any required modifications to the relocation value, and
3751 determine what types of dynamic info we need to output, if
3752 any. */
3753 plabel = 0;
3754 switch (r_type)
3755 {
3756 case R_PARISC_DLTIND14F:
3757 case R_PARISC_DLTIND14R:
3758 case R_PARISC_DLTIND21L:
3759 {
3760 bfd_vma off;
3761 bfd_boolean do_got = 0;
3762
3763 /* Relocation is to the entry for this symbol in the
3764 global offset table. */
3765 if (hh != NULL)
3766 {
3767 bfd_boolean dyn;
3768
3769 off = hh->eh.got.offset;
3770 dyn = htab->etab.dynamic_sections_created;
3771 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3772 bfd_link_pic (info),
3773 &hh->eh))
3774 {
3775 /* If we aren't going to call finish_dynamic_symbol,
3776 then we need to handle initialisation of the .got
3777 entry and create needed relocs here. Since the
3778 offset must always be a multiple of 4, we use the
3779 least significant bit to record whether we have
3780 initialised it already. */
3781 if ((off & 1) != 0)
3782 off &= ~1;
3783 else
3784 {
3785 hh->eh.got.offset |= 1;
3786 do_got = 1;
3787 }
3788 }
3789 }
3790 else
3791 {
3792 /* Local symbol case. */
3793 if (local_got_offsets == NULL)
3794 abort ();
3795
3796 off = local_got_offsets[r_symndx];
3797
3798 /* The offset must always be a multiple of 4. We use
3799 the least significant bit to record whether we have
3800 already generated the necessary reloc. */
3801 if ((off & 1) != 0)
3802 off &= ~1;
3803 else
3804 {
3805 local_got_offsets[r_symndx] |= 1;
3806 do_got = 1;
3807 }
3808 }
3809
3810 if (do_got)
3811 {
3812 if (bfd_link_pic (info))
3813 {
3814 /* Output a dynamic relocation for this GOT entry.
3815 In this case it is relative to the base of the
3816 object because the symbol index is zero. */
3817 Elf_Internal_Rela outrel;
3818 bfd_byte *loc;
3819 asection *sec = htab->etab.srelgot;
3820
3821 outrel.r_offset = (off
3822 + htab->etab.sgot->output_offset
3823 + htab->etab.sgot->output_section->vma);
3824 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3825 outrel.r_addend = relocation;
3826 loc = sec->contents;
3827 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3828 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3829 }
3830 else
3831 bfd_put_32 (output_bfd, relocation,
3832 htab->etab.sgot->contents + off);
3833 }
3834
3835 if (off >= (bfd_vma) -2)
3836 abort ();
3837
3838 /* Add the base of the GOT to the relocation value. */
3839 relocation = (off
3840 + htab->etab.sgot->output_offset
3841 + htab->etab.sgot->output_section->vma);
3842 }
3843 break;
3844
3845 case R_PARISC_SEGREL32:
3846 /* If this is the first SEGREL relocation, then initialize
3847 the segment base values. */
3848 if (htab->text_segment_base == (bfd_vma) -1)
3849 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3850 break;
3851
3852 case R_PARISC_PLABEL14R:
3853 case R_PARISC_PLABEL21L:
3854 case R_PARISC_PLABEL32:
3855 if (htab->etab.dynamic_sections_created)
3856 {
3857 bfd_vma off;
3858 bfd_boolean do_plt = 0;
3859 /* If we have a global symbol with a PLT slot, then
3860 redirect this relocation to it. */
3861 if (hh != NULL)
3862 {
3863 off = hh->eh.plt.offset;
3864 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3865 bfd_link_pic (info),
3866 &hh->eh))
3867 {
3868 /* In a non-shared link, adjust_dynamic_symbols
3869 isn't called for symbols forced local. We
3870 need to write out the plt entry here. */
3871 if ((off & 1) != 0)
3872 off &= ~1;
3873 else
3874 {
3875 hh->eh.plt.offset |= 1;
3876 do_plt = 1;
3877 }
3878 }
3879 }
3880 else
3881 {
3882 bfd_vma *local_plt_offsets;
3883
3884 if (local_got_offsets == NULL)
3885 abort ();
3886
3887 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3888 off = local_plt_offsets[r_symndx];
3889
3890 /* As for the local .got entry case, we use the last
3891 bit to record whether we've already initialised
3892 this local .plt entry. */
3893 if ((off & 1) != 0)
3894 off &= ~1;
3895 else
3896 {
3897 local_plt_offsets[r_symndx] |= 1;
3898 do_plt = 1;
3899 }
3900 }
3901
3902 if (do_plt)
3903 {
3904 if (bfd_link_pic (info))
3905 {
3906 /* Output a dynamic IPLT relocation for this
3907 PLT entry. */
3908 Elf_Internal_Rela outrel;
3909 bfd_byte *loc;
3910 asection *s = htab->etab.srelplt;
3911
3912 outrel.r_offset = (off
3913 + htab->etab.splt->output_offset
3914 + htab->etab.splt->output_section->vma);
3915 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3916 outrel.r_addend = relocation;
3917 loc = s->contents;
3918 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3919 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3920 }
3921 else
3922 {
3923 bfd_put_32 (output_bfd,
3924 relocation,
3925 htab->etab.splt->contents + off);
3926 bfd_put_32 (output_bfd,
3927 elf_gp (htab->etab.splt->output_section->owner),
3928 htab->etab.splt->contents + off + 4);
3929 }
3930 }
3931
3932 if (off >= (bfd_vma) -2)
3933 abort ();
3934
3935 /* PLABELs contain function pointers. Relocation is to
3936 the entry for the function in the .plt. The magic +2
3937 offset signals to $$dyncall that the function pointer
3938 is in the .plt and thus has a gp pointer too.
3939 Exception: Undefined PLABELs should have a value of
3940 zero. */
3941 if (hh == NULL
3942 || (hh->eh.root.type != bfd_link_hash_undefweak
3943 && hh->eh.root.type != bfd_link_hash_undefined))
3944 {
3945 relocation = (off
3946 + htab->etab.splt->output_offset
3947 + htab->etab.splt->output_section->vma
3948 + 2);
3949 }
3950 plabel = 1;
3951 }
3952 /* Fall through. */
3953
3954 case R_PARISC_DIR17F:
3955 case R_PARISC_DIR17R:
3956 case R_PARISC_DIR14F:
3957 case R_PARISC_DIR14R:
3958 case R_PARISC_DIR21L:
3959 case R_PARISC_DPREL14F:
3960 case R_PARISC_DPREL14R:
3961 case R_PARISC_DPREL21L:
3962 case R_PARISC_DIR32:
3963 if ((input_section->flags & SEC_ALLOC) == 0)
3964 break;
3965
3966 /* The reloc types handled here and this conditional
3967 expression must match the code in ..check_relocs and
3968 allocate_dynrelocs. ie. We need exactly the same condition
3969 as in ..check_relocs, with some extra conditions (dynindx
3970 test in this case) to cater for relocs removed by
3971 allocate_dynrelocs. If you squint, the non-shared test
3972 here does indeed match the one in ..check_relocs, the
3973 difference being that here we test DEF_DYNAMIC as well as
3974 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3975 which is why we can't use just that test here.
3976 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3977 there all files have not been loaded. */
3978 if ((bfd_link_pic (info)
3979 && (hh == NULL
3980 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3981 || hh->eh.root.type != bfd_link_hash_undefweak)
3982 && (IS_ABSOLUTE_RELOC (r_type)
3983 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3984 || (!bfd_link_pic (info)
3985 && hh != NULL
3986 && hh->eh.dynindx != -1
3987 && !hh->eh.non_got_ref
3988 && ((ELIMINATE_COPY_RELOCS
3989 && hh->eh.def_dynamic
3990 && !hh->eh.def_regular)
3991 || hh->eh.root.type == bfd_link_hash_undefweak
3992 || hh->eh.root.type == bfd_link_hash_undefined)))
3993 {
3994 Elf_Internal_Rela outrel;
3995 bfd_boolean skip;
3996 asection *sreloc;
3997 bfd_byte *loc;
3998
3999 /* When generating a shared object, these relocations
4000 are copied into the output file to be resolved at run
4001 time. */
4002
4003 outrel.r_addend = rela->r_addend;
4004 outrel.r_offset =
4005 _bfd_elf_section_offset (output_bfd, info, input_section,
4006 rela->r_offset);
4007 skip = (outrel.r_offset == (bfd_vma) -1
4008 || outrel.r_offset == (bfd_vma) -2);
4009 outrel.r_offset += (input_section->output_offset
4010 + input_section->output_section->vma);
4011
4012 if (skip)
4013 {
4014 memset (&outrel, 0, sizeof (outrel));
4015 }
4016 else if (hh != NULL
4017 && hh->eh.dynindx != -1
4018 && (plabel
4019 || !IS_ABSOLUTE_RELOC (r_type)
4020 || !bfd_link_pic (info)
4021 || !SYMBOLIC_BIND (info, &hh->eh)
4022 || !hh->eh.def_regular))
4023 {
4024 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4025 }
4026 else /* It's a local symbol, or one marked to become local. */
4027 {
4028 int indx = 0;
4029
4030 /* Add the absolute offset of the symbol. */
4031 outrel.r_addend += relocation;
4032
4033 /* Global plabels need to be processed by the
4034 dynamic linker so that functions have at most one
4035 fptr. For this reason, we need to differentiate
4036 between global and local plabels, which we do by
4037 providing the function symbol for a global plabel
4038 reloc, and no symbol for local plabels. */
4039 if (! plabel
4040 && sym_sec != NULL
4041 && sym_sec->output_section != NULL
4042 && ! bfd_is_abs_section (sym_sec))
4043 {
4044 asection *osec;
4045
4046 osec = sym_sec->output_section;
4047 indx = elf_section_data (osec)->dynindx;
4048 if (indx == 0)
4049 {
4050 osec = htab->etab.text_index_section;
4051 indx = elf_section_data (osec)->dynindx;
4052 }
4053 BFD_ASSERT (indx != 0);
4054
4055 /* We are turning this relocation into one
4056 against a section symbol, so subtract out the
4057 output section's address but not the offset
4058 of the input section in the output section. */
4059 outrel.r_addend -= osec->vma;
4060 }
4061
4062 outrel.r_info = ELF32_R_INFO (indx, r_type);
4063 }
4064 sreloc = elf_section_data (input_section)->sreloc;
4065 if (sreloc == NULL)
4066 abort ();
4067
4068 loc = sreloc->contents;
4069 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4070 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4071 }
4072 break;
4073
4074 case R_PARISC_TLS_LDM21L:
4075 case R_PARISC_TLS_LDM14R:
4076 {
4077 bfd_vma off;
4078
4079 off = htab->tls_ldm_got.offset;
4080 if (off & 1)
4081 off &= ~1;
4082 else
4083 {
4084 Elf_Internal_Rela outrel;
4085 bfd_byte *loc;
4086
4087 outrel.r_offset = (off
4088 + htab->etab.sgot->output_section->vma
4089 + htab->etab.sgot->output_offset);
4090 outrel.r_addend = 0;
4091 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4092 loc = htab->etab.srelgot->contents;
4093 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4094
4095 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4096 htab->tls_ldm_got.offset |= 1;
4097 }
4098
4099 /* Add the base of the GOT to the relocation value. */
4100 relocation = (off
4101 + htab->etab.sgot->output_offset
4102 + htab->etab.sgot->output_section->vma);
4103
4104 break;
4105 }
4106
4107 case R_PARISC_TLS_LDO21L:
4108 case R_PARISC_TLS_LDO14R:
4109 relocation -= dtpoff_base (info);
4110 break;
4111
4112 case R_PARISC_TLS_GD21L:
4113 case R_PARISC_TLS_GD14R:
4114 case R_PARISC_TLS_IE21L:
4115 case R_PARISC_TLS_IE14R:
4116 {
4117 bfd_vma off;
4118 int indx;
4119 char tls_type;
4120
4121 indx = 0;
4122 if (hh != NULL)
4123 {
4124 bfd_boolean dyn;
4125 dyn = htab->etab.dynamic_sections_created;
4126
4127 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4128 bfd_link_pic (info),
4129 &hh->eh)
4130 && (!bfd_link_pic (info)
4131 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4132 {
4133 indx = hh->eh.dynindx;
4134 }
4135 off = hh->eh.got.offset;
4136 tls_type = hh->tls_type;
4137 }
4138 else
4139 {
4140 off = local_got_offsets[r_symndx];
4141 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4142 }
4143
4144 if (tls_type == GOT_UNKNOWN)
4145 abort ();
4146
4147 if ((off & 1) != 0)
4148 off &= ~1;
4149 else
4150 {
4151 bfd_boolean need_relocs = FALSE;
4152 Elf_Internal_Rela outrel;
4153 bfd_byte *loc = NULL;
4154 int cur_off = off;
4155
4156 /* The GOT entries have not been initialized yet. Do it
4157 now, and emit any relocations. If both an IE GOT and a
4158 GD GOT are necessary, we emit the GD first. */
4159
4160 if ((bfd_link_pic (info) || indx != 0)
4161 && (hh == NULL
4162 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4163 || hh->eh.root.type != bfd_link_hash_undefweak))
4164 {
4165 need_relocs = TRUE;
4166 loc = htab->etab.srelgot->contents;
4167 /* FIXME (CAO): Should this be reloc_count++ ? */
4168 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela);
4169 }
4170
4171 if (tls_type & GOT_TLS_GD)
4172 {
4173 if (need_relocs)
4174 {
4175 outrel.r_offset = (cur_off
4176 + htab->etab.sgot->output_section->vma
4177 + htab->etab.sgot->output_offset);
4178 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4179 outrel.r_addend = 0;
4180 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off);
4181 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4182 htab->etab.srelgot->reloc_count++;
4183 loc += sizeof (Elf32_External_Rela);
4184
4185 if (indx == 0)
4186 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4187 htab->etab.sgot->contents + cur_off + 4);
4188 else
4189 {
4190 bfd_put_32 (output_bfd, 0,
4191 htab->etab.sgot->contents + cur_off + 4);
4192 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4193 outrel.r_offset += 4;
4194 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4195 htab->etab.srelgot->reloc_count++;
4196 loc += sizeof (Elf32_External_Rela);
4197 }
4198 }
4199 else
4200 {
4201 /* If we are not emitting relocations for a
4202 general dynamic reference, then we must be in a
4203 static link or an executable link with the
4204 symbol binding locally. Mark it as belonging
4205 to module 1, the executable. */
4206 bfd_put_32 (output_bfd, 1,
4207 htab->etab.sgot->contents + cur_off);
4208 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4209 htab->etab.sgot->contents + cur_off + 4);
4210 }
4211
4212
4213 cur_off += 8;
4214 }
4215
4216 if (tls_type & GOT_TLS_IE)
4217 {
4218 if (need_relocs)
4219 {
4220 outrel.r_offset = (cur_off
4221 + htab->etab.sgot->output_section->vma
4222 + htab->etab.sgot->output_offset);
4223 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4224
4225 if (indx == 0)
4226 outrel.r_addend = relocation - dtpoff_base (info);
4227 else
4228 outrel.r_addend = 0;
4229
4230 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4231 htab->etab.srelgot->reloc_count++;
4232 loc += sizeof (Elf32_External_Rela);
4233 }
4234 else
4235 bfd_put_32 (output_bfd, tpoff (info, relocation),
4236 htab->etab.sgot->contents + cur_off);
4237
4238 cur_off += 4;
4239 }
4240
4241 if (hh != NULL)
4242 hh->eh.got.offset |= 1;
4243 else
4244 local_got_offsets[r_symndx] |= 1;
4245 }
4246
4247 if ((tls_type & GOT_TLS_GD)
4248 && r_type != R_PARISC_TLS_GD21L
4249 && r_type != R_PARISC_TLS_GD14R)
4250 off += 2 * GOT_ENTRY_SIZE;
4251
4252 /* Add the base of the GOT to the relocation value. */
4253 relocation = (off
4254 + htab->etab.sgot->output_offset
4255 + htab->etab.sgot->output_section->vma);
4256
4257 break;
4258 }
4259
4260 case R_PARISC_TLS_LE21L:
4261 case R_PARISC_TLS_LE14R:
4262 {
4263 relocation = tpoff (info, relocation);
4264 break;
4265 }
4266 break;
4267
4268 default:
4269 break;
4270 }
4271
4272 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4273 htab, sym_sec, hh, info);
4274
4275 if (rstatus == bfd_reloc_ok)
4276 continue;
4277
4278 if (hh != NULL)
4279 sym_name = hh_name (hh);
4280 else
4281 {
4282 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4283 symtab_hdr->sh_link,
4284 sym->st_name);
4285 if (sym_name == NULL)
4286 return FALSE;
4287 if (*sym_name == '\0')
4288 sym_name = bfd_section_name (input_bfd, sym_sec);
4289 }
4290
4291 howto = elf_hppa_howto_table + r_type;
4292
4293 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4294 {
4295 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4296 {
4297 _bfd_error_handler
4298 /* xgettext:c-format */
4299 (_("%B(%A+0x%lx): cannot handle %s for %s"),
4300 input_bfd,
4301 input_section,
4302 (long) rela->r_offset,
4303 howto->name,
4304 sym_name);
4305 bfd_set_error (bfd_error_bad_value);
4306 return FALSE;
4307 }
4308 }
4309 else
4310 (*info->callbacks->reloc_overflow)
4311 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4312 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4313 }
4314
4315 return TRUE;
4316 }
4317
4318 /* Finish up dynamic symbol handling. We set the contents of various
4319 dynamic sections here. */
4320
4321 static bfd_boolean
4322 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4323 struct bfd_link_info *info,
4324 struct elf_link_hash_entry *eh,
4325 Elf_Internal_Sym *sym)
4326 {
4327 struct elf32_hppa_link_hash_table *htab;
4328 Elf_Internal_Rela rela;
4329 bfd_byte *loc;
4330
4331 htab = hppa_link_hash_table (info);
4332 if (htab == NULL)
4333 return FALSE;
4334
4335 if (eh->plt.offset != (bfd_vma) -1)
4336 {
4337 bfd_vma value;
4338
4339 if (eh->plt.offset & 1)
4340 abort ();
4341
4342 /* This symbol has an entry in the procedure linkage table. Set
4343 it up.
4344
4345 The format of a plt entry is
4346 <funcaddr>
4347 <__gp>
4348 */
4349 value = 0;
4350 if (eh->root.type == bfd_link_hash_defined
4351 || eh->root.type == bfd_link_hash_defweak)
4352 {
4353 value = eh->root.u.def.value;
4354 if (eh->root.u.def.section->output_section != NULL)
4355 value += (eh->root.u.def.section->output_offset
4356 + eh->root.u.def.section->output_section->vma);
4357 }
4358
4359 /* Create a dynamic IPLT relocation for this entry. */
4360 rela.r_offset = (eh->plt.offset
4361 + htab->etab.splt->output_offset
4362 + htab->etab.splt->output_section->vma);
4363 if (eh->dynindx != -1)
4364 {
4365 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4366 rela.r_addend = 0;
4367 }
4368 else
4369 {
4370 /* This symbol has been marked to become local, and is
4371 used by a plabel so must be kept in the .plt. */
4372 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4373 rela.r_addend = value;
4374 }
4375
4376 loc = htab->etab.srelplt->contents;
4377 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4378 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4379
4380 if (!eh->def_regular)
4381 {
4382 /* Mark the symbol as undefined, rather than as defined in
4383 the .plt section. Leave the value alone. */
4384 sym->st_shndx = SHN_UNDEF;
4385 }
4386 }
4387
4388 if (eh->got.offset != (bfd_vma) -1
4389 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4390 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4391 {
4392 /* This symbol has an entry in the global offset table. Set it
4393 up. */
4394
4395 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4396 + htab->etab.sgot->output_offset
4397 + htab->etab.sgot->output_section->vma);
4398
4399 /* If this is a -Bsymbolic link and the symbol is defined
4400 locally or was forced to be local because of a version file,
4401 we just want to emit a RELATIVE reloc. The entry in the
4402 global offset table will already have been initialized in the
4403 relocate_section function. */
4404 if (bfd_link_pic (info)
4405 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4406 && eh->def_regular)
4407 {
4408 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4409 rela.r_addend = (eh->root.u.def.value
4410 + eh->root.u.def.section->output_offset
4411 + eh->root.u.def.section->output_section->vma);
4412 }
4413 else
4414 {
4415 if ((eh->got.offset & 1) != 0)
4416 abort ();
4417
4418 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1));
4419 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4420 rela.r_addend = 0;
4421 }
4422
4423 loc = htab->etab.srelgot->contents;
4424 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4425 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4426 }
4427
4428 if (eh->needs_copy)
4429 {
4430 asection *sec;
4431
4432 /* This symbol needs a copy reloc. Set it up. */
4433
4434 if (! (eh->dynindx != -1
4435 && (eh->root.type == bfd_link_hash_defined
4436 || eh->root.type == bfd_link_hash_defweak)))
4437 abort ();
4438
4439 rela.r_offset = (eh->root.u.def.value
4440 + eh->root.u.def.section->output_offset
4441 + eh->root.u.def.section->output_section->vma);
4442 rela.r_addend = 0;
4443 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4444 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
4445 sec = htab->etab.sreldynrelro;
4446 else
4447 sec = htab->etab.srelbss;
4448 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4449 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4450 }
4451
4452 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4453 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4454 {
4455 sym->st_shndx = SHN_ABS;
4456 }
4457
4458 return TRUE;
4459 }
4460
4461 /* Used to decide how to sort relocs in an optimal manner for the
4462 dynamic linker, before writing them out. */
4463
4464 static enum elf_reloc_type_class
4465 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4466 const asection *rel_sec ATTRIBUTE_UNUSED,
4467 const Elf_Internal_Rela *rela)
4468 {
4469 /* Handle TLS relocs first; we don't want them to be marked
4470 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4471 check below. */
4472 switch ((int) ELF32_R_TYPE (rela->r_info))
4473 {
4474 case R_PARISC_TLS_DTPMOD32:
4475 case R_PARISC_TLS_DTPOFF32:
4476 case R_PARISC_TLS_TPREL32:
4477 return reloc_class_normal;
4478 }
4479
4480 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4481 return reloc_class_relative;
4482
4483 switch ((int) ELF32_R_TYPE (rela->r_info))
4484 {
4485 case R_PARISC_IPLT:
4486 return reloc_class_plt;
4487 case R_PARISC_COPY:
4488 return reloc_class_copy;
4489 default:
4490 return reloc_class_normal;
4491 }
4492 }
4493
4494 /* Finish up the dynamic sections. */
4495
4496 static bfd_boolean
4497 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4498 struct bfd_link_info *info)
4499 {
4500 bfd *dynobj;
4501 struct elf32_hppa_link_hash_table *htab;
4502 asection *sdyn;
4503 asection * sgot;
4504
4505 htab = hppa_link_hash_table (info);
4506 if (htab == NULL)
4507 return FALSE;
4508
4509 dynobj = htab->etab.dynobj;
4510
4511 sgot = htab->etab.sgot;
4512 /* A broken linker script might have discarded the dynamic sections.
4513 Catch this here so that we do not seg-fault later on. */
4514 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4515 return FALSE;
4516
4517 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4518
4519 if (htab->etab.dynamic_sections_created)
4520 {
4521 Elf32_External_Dyn *dyncon, *dynconend;
4522
4523 if (sdyn == NULL)
4524 abort ();
4525
4526 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4527 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4528 for (; dyncon < dynconend; dyncon++)
4529 {
4530 Elf_Internal_Dyn dyn;
4531 asection *s;
4532
4533 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4534
4535 switch (dyn.d_tag)
4536 {
4537 default:
4538 continue;
4539
4540 case DT_PLTGOT:
4541 /* Use PLTGOT to set the GOT register. */
4542 dyn.d_un.d_ptr = elf_gp (output_bfd);
4543 break;
4544
4545 case DT_JMPREL:
4546 s = htab->etab.srelplt;
4547 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4548 break;
4549
4550 case DT_PLTRELSZ:
4551 s = htab->etab.srelplt;
4552 dyn.d_un.d_val = s->size;
4553 break;
4554 }
4555
4556 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4557 }
4558 }
4559
4560 if (sgot != NULL && sgot->size != 0)
4561 {
4562 /* Fill in the first entry in the global offset table.
4563 We use it to point to our dynamic section, if we have one. */
4564 bfd_put_32 (output_bfd,
4565 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4566 sgot->contents);
4567
4568 /* The second entry is reserved for use by the dynamic linker. */
4569 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4570
4571 /* Set .got entry size. */
4572 elf_section_data (sgot->output_section)
4573 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4574 }
4575
4576 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4577 {
4578 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4579 plt stubs and as such the section does not hold a table of fixed-size
4580 entries. */
4581 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4582
4583 if (htab->need_plt_stub)
4584 {
4585 /* Set up the .plt stub. */
4586 memcpy (htab->etab.splt->contents
4587 + htab->etab.splt->size - sizeof (plt_stub),
4588 plt_stub, sizeof (plt_stub));
4589
4590 if ((htab->etab.splt->output_offset
4591 + htab->etab.splt->output_section->vma
4592 + htab->etab.splt->size)
4593 != (sgot->output_offset
4594 + sgot->output_section->vma))
4595 {
4596 _bfd_error_handler
4597 (_(".got section not immediately after .plt section"));
4598 return FALSE;
4599 }
4600 }
4601 }
4602
4603 return TRUE;
4604 }
4605
4606 /* Called when writing out an object file to decide the type of a
4607 symbol. */
4608 static int
4609 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4610 {
4611 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4612 return STT_PARISC_MILLI;
4613 else
4614 return type;
4615 }
4616
4617 /* Misc BFD support code. */
4618 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4619 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4620 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4621 #define elf_info_to_howto elf_hppa_info_to_howto
4622 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4623
4624 /* Stuff for the BFD linker. */
4625 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4626 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4627 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4628 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4629 #define elf_backend_check_relocs elf32_hppa_check_relocs
4630 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4631 #define elf_backend_fake_sections elf_hppa_fake_sections
4632 #define elf_backend_relocate_section elf32_hppa_relocate_section
4633 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4634 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4635 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4636 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4637 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4638 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4639 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4640 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4641 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4642 #define elf_backend_object_p elf32_hppa_object_p
4643 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4644 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4645 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4646 #define elf_backend_action_discarded elf_hppa_action_discarded
4647
4648 #define elf_backend_can_gc_sections 1
4649 #define elf_backend_can_refcount 1
4650 #define elf_backend_plt_alignment 2
4651 #define elf_backend_want_got_plt 0
4652 #define elf_backend_plt_readonly 0
4653 #define elf_backend_want_plt_sym 0
4654 #define elf_backend_got_header_size 8
4655 #define elf_backend_want_dynrelro 1
4656 #define elf_backend_rela_normal 1
4657 #define elf_backend_dtrel_excludes_plt 1
4658
4659 #define TARGET_BIG_SYM hppa_elf32_vec
4660 #define TARGET_BIG_NAME "elf32-hppa"
4661 #define ELF_ARCH bfd_arch_hppa
4662 #define ELF_TARGET_ID HPPA32_ELF_DATA
4663 #define ELF_MACHINE_CODE EM_PARISC
4664 #define ELF_MAXPAGESIZE 0x1000
4665 #define ELF_OSABI ELFOSABI_HPUX
4666 #define elf32_bed elf32_hppa_hpux_bed
4667
4668 #include "elf32-target.h"
4669
4670 #undef TARGET_BIG_SYM
4671 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4672 #undef TARGET_BIG_NAME
4673 #define TARGET_BIG_NAME "elf32-hppa-linux"
4674 #undef ELF_OSABI
4675 #define ELF_OSABI ELFOSABI_GNU
4676 #undef elf32_bed
4677 #define elf32_bed elf32_hppa_linux_bed
4678
4679 #include "elf32-target.h"
4680
4681 #undef TARGET_BIG_SYM
4682 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4683 #undef TARGET_BIG_NAME
4684 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4685 #undef ELF_OSABI
4686 #define ELF_OSABI ELFOSABI_NETBSD
4687 #undef elf32_bed
4688 #define elf32_bed elf32_hppa_netbsd_bed
4689
4690 #include "elf32-target.h"