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cbe79dfe 1/* IA-64 support for 64-bit ELF
fd67aa11 2 Copyright (C) 1998-2024 Free Software Foundation, Inc.
cbe79dfe
TG
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
26#include "opcode/ia64.h"
27#include "elf/ia64.h"
28#include "objalloc.h"
29#include "hashtab.h"
cbe79dfe
TG
30#include "elfxx-ia64.h"
31
32#define ARCH_SIZE NN
33
34#if ARCH_SIZE == 64
35#define LOG_SECTION_ALIGN 3
36#endif
37
38#if ARCH_SIZE == 32
39#define LOG_SECTION_ALIGN 2
40#endif
41
b26a3d58
ST
42#define is_ia64_elf(bfd) \
43 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
44 && elf_object_id (bfd) == IA64_ELF_DATA)
45
cbe79dfe
TG
46typedef struct bfd_hash_entry *(*new_hash_entry_func)
47 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
48
49/* In dynamically (linker-) created sections, we generally need to keep track
50 of the place a symbol or expression got allocated to. This is done via hash
51 tables that store entries of the following type. */
52
53struct elfNN_ia64_dyn_sym_info
54{
55 /* The addend for which this entry is relevant. */
56 bfd_vma addend;
57
58 bfd_vma got_offset;
59 bfd_vma fptr_offset;
60 bfd_vma pltoff_offset;
61 bfd_vma plt_offset;
62 bfd_vma plt2_offset;
63 bfd_vma tprel_offset;
64 bfd_vma dtpmod_offset;
65 bfd_vma dtprel_offset;
66
67 /* The symbol table entry, if any, that this was derived from. */
68 struct elf_link_hash_entry *h;
69
70 /* Used to count non-got, non-plt relocations for delayed sizing
71 of relocation sections. */
72 struct elfNN_ia64_dyn_reloc_entry
73 {
74 struct elfNN_ia64_dyn_reloc_entry *next;
75 asection *srel;
76 int type;
77 int count;
78
79 /* Is this reloc against readonly section? */
0a1b45a2 80 bool reltext;
cbe79dfe
TG
81 } *reloc_entries;
82
83 /* TRUE when the section contents have been updated. */
84 unsigned got_done : 1;
85 unsigned fptr_done : 1;
86 unsigned pltoff_done : 1;
87 unsigned tprel_done : 1;
88 unsigned dtpmod_done : 1;
89 unsigned dtprel_done : 1;
90
91 /* TRUE for the different kinds of linker data we want created. */
92 unsigned want_got : 1;
93 unsigned want_gotx : 1;
94 unsigned want_fptr : 1;
95 unsigned want_ltoff_fptr : 1;
96 unsigned want_plt : 1;
97 unsigned want_plt2 : 1;
98 unsigned want_pltoff : 1;
99 unsigned want_tprel : 1;
100 unsigned want_dtpmod : 1;
101 unsigned want_dtprel : 1;
102};
103
104struct elfNN_ia64_local_hash_entry
105{
106 int id;
107 unsigned int r_sym;
108 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
109 unsigned int count;
110 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
111 unsigned int sorted_count;
112 /* The size of elfNN_ia64_dyn_sym_info array. */
113 unsigned int size;
114 /* The array of elfNN_ia64_dyn_sym_info. */
115 struct elfNN_ia64_dyn_sym_info *info;
116
117 /* TRUE if this hash entry's addends was translated for
118 SHF_MERGE optimization. */
119 unsigned sec_merge_done : 1;
120};
121
122struct elfNN_ia64_link_hash_entry
123{
124 struct elf_link_hash_entry root;
125 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
126 unsigned int count;
127 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
128 unsigned int sorted_count;
129 /* The size of elfNN_ia64_dyn_sym_info array. */
130 unsigned int size;
131 /* The array of elfNN_ia64_dyn_sym_info. */
132 struct elfNN_ia64_dyn_sym_info *info;
133};
134
135struct elfNN_ia64_link_hash_table
136{
137 /* The main hash table. */
138 struct elf_link_hash_table root;
139
140 asection *fptr_sec; /* Function descriptor table (or NULL). */
141 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
142 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
143 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
144
145 bfd_size_type minplt_entries; /* Number of minplt entries. */
cbe79dfe
TG
146 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
147 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
148 /* There are maybe R_IA64_GPREL22 relocations, including those
149 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
150 sections. We need to record those sections so that we can choose
151 a proper GP to cover all R_IA64_GPREL22 relocations. */
152 asection *max_short_sec; /* Maximum short output section. */
153 bfd_vma max_short_offset; /* Maximum short offset. */
154 asection *min_short_sec; /* Minimum short output section. */
155 bfd_vma min_short_offset; /* Minimum short offset. */
156
157 htab_t loc_hash_table;
158 void *loc_hash_memory;
159};
160
161struct elfNN_ia64_allocate_data
162{
163 struct bfd_link_info *info;
164 bfd_size_type ofs;
0a1b45a2 165 bool only_got;
cbe79dfe
TG
166};
167
168#define elfNN_ia64_hash_table(p) \
0f55320b
AM
169 ((is_elf_hash_table ((p)->hash) \
170 && elf_hash_table_id (elf_hash_table (p)) == IA64_ELF_DATA) \
171 ? (struct elfNN_ia64_link_hash_table *) (p)->hash : NULL)
cbe79dfe
TG
172
173static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
174 (struct elfNN_ia64_link_hash_table *ia64_info,
175 struct elf_link_hash_entry *h,
0a1b45a2
AM
176 bfd *abfd, const Elf_Internal_Rela *rel, bool create);
177static bool elfNN_ia64_dynamic_symbol_p
cbe79dfe 178 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
0a1b45a2
AM
179static bool elfNN_ia64_choose_gp
180 (bfd *abfd, struct bfd_link_info *info, bool final);
cbe79dfe
TG
181static void elfNN_ia64_dyn_sym_traverse
182 (struct elfNN_ia64_link_hash_table *ia64_info,
0a1b45a2 183 bool (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
2c3fc389 184 void * info);
0a1b45a2 185static bool allocate_global_data_got
2c3fc389 186 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
0a1b45a2 187static bool allocate_global_fptr_got
2c3fc389 188 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
0a1b45a2 189static bool allocate_local_got
2c3fc389 190 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
0a1b45a2 191static bool elfNN_ia64_hpux_vec
cbe79dfe 192 (const bfd_target *vec);
0a1b45a2 193static bool allocate_dynrel_entries
2c3fc389 194 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
cbe79dfe
TG
195static asection *get_pltoff
196 (bfd *abfd, struct bfd_link_info *info,
197 struct elfNN_ia64_link_hash_table *ia64_info);
198\f
199/* ia64-specific relocation. */
200
201/* Given a ELF reloc, return the matching HOWTO structure. */
202
0a1b45a2 203static bool
cbe79dfe
TG
204elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
205 arelent *bfd_reloc,
206 Elf_Internal_Rela *elf_reloc)
207{
f3185997
NC
208 unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info);
209
210 bfd_reloc->howto = ia64_elf_lookup_howto (r_type);
211 if (bfd_reloc->howto == NULL)
212 {
213 /* xgettext:c-format */
214 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
215 abfd, r_type);
216 bfd_set_error (bfd_error_bad_value);
0a1b45a2 217 return false;
f3185997
NC
218 }
219
0a1b45a2 220 return true;
cbe79dfe
TG
221}
222\f
223#define PLT_HEADER_SIZE (3 * 16)
224#define PLT_MIN_ENTRY_SIZE (1 * 16)
225#define PLT_FULL_ENTRY_SIZE (2 * 16)
226#define PLT_RESERVED_WORDS 3
227
228static const bfd_byte plt_header[PLT_HEADER_SIZE] =
229{
07d6d2b8
AM
230 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
231 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
232 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
233 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
234 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
235 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
236 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
237 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
238 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
cbe79dfe
TG
239};
240
241static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
242{
07d6d2b8
AM
243 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
244 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
245 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
cbe79dfe
TG
246};
247
248static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
249{
07d6d2b8
AM
250 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
251 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
252 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
253 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
254 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
255 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
cbe79dfe
TG
256};
257
258#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
259
260static const bfd_byte oor_brl[16] =
261{
07d6d2b8
AM
262 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
263 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
cbe79dfe
TG
264 0x00, 0x00, 0x00, 0xc0
265};
266
267static const bfd_byte oor_ip[48] =
268{
07d6d2b8
AM
269 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
270 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
cbe79dfe 271 0x01, 0x00, 0x00, 0x60,
07d6d2b8
AM
272 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
273 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
274 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
275 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
276 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
277 0x60, 0x00, 0x80, 0x00 /* br b6;; */
cbe79dfe
TG
278};
279
280static size_t oor_branch_size = sizeof (oor_brl);
281
282void
283bfd_elfNN_ia64_after_parse (int itanium)
284{
285 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
286}
287\f
288
289/* Rename some of the generic section flags to better document how they
290 are used here. */
291#define skip_relax_pass_0 sec_flg0
292#define skip_relax_pass_1 sec_flg1
293
294/* These functions do relaxation for IA-64 ELF. */
295
296static void
297elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
298 struct elfNN_ia64_link_hash_table *ia64_info)
299{
300 /* Skip ABS and SHF_IA_64_SHORT sections. */
301 if (sec == bfd_abs_section_ptr
302 || (sec->flags & SEC_SMALL_DATA) != 0)
303 return;
304
305 if (!ia64_info->min_short_sec)
306 {
307 ia64_info->max_short_sec = sec;
308 ia64_info->max_short_offset = offset;
309 ia64_info->min_short_sec = sec;
310 ia64_info->min_short_offset = offset;
311 }
312 else if (sec == ia64_info->max_short_sec
313 && offset > ia64_info->max_short_offset)
314 ia64_info->max_short_offset = offset;
315 else if (sec == ia64_info->min_short_sec
316 && offset < ia64_info->min_short_offset)
317 ia64_info->min_short_offset = offset;
318 else if (sec->output_section->vma
319 > ia64_info->max_short_sec->vma)
320 {
321 ia64_info->max_short_sec = sec;
322 ia64_info->max_short_offset = offset;
323 }
324 else if (sec->output_section->vma
325 < ia64_info->min_short_sec->vma)
326 {
327 ia64_info->min_short_sec = sec;
328 ia64_info->min_short_offset = offset;
329 }
330}
331
0a1b45a2 332static bool
cbe79dfe
TG
333elfNN_ia64_relax_section (bfd *abfd, asection *sec,
334 struct bfd_link_info *link_info,
0a1b45a2 335 bool *again)
cbe79dfe
TG
336{
337 struct one_fixup
338 {
339 struct one_fixup *next;
340 asection *tsec;
341 bfd_vma toff;
342 bfd_vma trampoff;
343 };
344
345 Elf_Internal_Shdr *symtab_hdr;
346 Elf_Internal_Rela *internal_relocs;
347 Elf_Internal_Rela *irel, *irelend;
348 bfd_byte *contents;
349 Elf_Internal_Sym *isymbuf = NULL;
350 struct elfNN_ia64_link_hash_table *ia64_info;
351 struct one_fixup *fixups = NULL;
0a1b45a2
AM
352 bool changed_contents = false;
353 bool changed_relocs = false;
354 bool changed_got = false;
355 bool skip_relax_pass_0 = true;
356 bool skip_relax_pass_1 = true;
cbe79dfe
TG
357 bfd_vma gp = 0;
358
359 /* Assume we're not going to change any sizes, and we'll only need
360 one pass. */
0a1b45a2 361 *again = false;
cbe79dfe 362
0e1862bb 363 if (bfd_link_relocatable (link_info))
cbe79dfe
TG
364 (*link_info->callbacks->einfo)
365 (_("%P%F: --relax and -r may not be used together\n"));
366
367 /* Don't even try to relax for non-ELF outputs. */
368 if (!is_elf_hash_table (link_info->hash))
0a1b45a2 369 return false;
cbe79dfe
TG
370
371 /* Nothing to do if there are no relocations or there is no need for
372 the current pass. */
3a574cce
AM
373 if (sec->reloc_count == 0
374 || (sec->flags & SEC_RELOC) == 0
375 || (sec->flags & SEC_HAS_CONTENTS) == 0
cbe79dfe
TG
376 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
377 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
0a1b45a2 378 return true;
cbe79dfe
TG
379
380 ia64_info = elfNN_ia64_hash_table (link_info);
381 if (ia64_info == NULL)
0a1b45a2 382 return false;
cbe79dfe
TG
383
384 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
385
386 /* Load the relocations for this section. */
387 internal_relocs = (_bfd_elf_link_read_relocs
388 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
389 link_info->keep_memory));
390 if (internal_relocs == NULL)
0a1b45a2 391 return false;
cbe79dfe
TG
392
393 irelend = internal_relocs + sec->reloc_count;
394
395 /* Get the section contents. */
396 if (elf_section_data (sec)->this_hdr.contents != NULL)
397 contents = elf_section_data (sec)->this_hdr.contents;
398 else
399 {
400 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
401 goto error_return;
402 }
403
404 for (irel = internal_relocs; irel < irelend; irel++)
405 {
406 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
407 bfd_vma symaddr, reladdr, trampoff, toff, roff;
408 asection *tsec;
409 struct one_fixup *f;
410 bfd_size_type amt;
0a1b45a2 411 bool is_branch;
cbe79dfe
TG
412 struct elfNN_ia64_dyn_sym_info *dyn_i;
413 char symtype;
414
415 switch (r_type)
416 {
417 case R_IA64_PCREL21B:
418 case R_IA64_PCREL21BI:
419 case R_IA64_PCREL21M:
420 case R_IA64_PCREL21F:
421 /* In pass 1, all br relaxations are done. We can skip it. */
422 if (link_info->relax_pass == 1)
423 continue;
0a1b45a2
AM
424 skip_relax_pass_0 = false;
425 is_branch = true;
cbe79dfe
TG
426 break;
427
428 case R_IA64_PCREL60B:
429 /* We can't optimize brl to br in pass 0 since br relaxations
430 will increase the code size. Defer it to pass 1. */
431 if (link_info->relax_pass == 0)
432 {
0a1b45a2 433 skip_relax_pass_1 = false;
cbe79dfe
TG
434 continue;
435 }
0a1b45a2 436 is_branch = true;
cbe79dfe
TG
437 break;
438
439 case R_IA64_GPREL22:
440 /* Update max_short_sec/min_short_sec. */
441
442 case R_IA64_LTOFF22X:
443 case R_IA64_LDXMOV:
444 /* We can't relax ldx/mov in pass 0 since br relaxations will
445 increase the code size. Defer it to pass 1. */
446 if (link_info->relax_pass == 0)
447 {
0a1b45a2 448 skip_relax_pass_1 = false;
cbe79dfe
TG
449 continue;
450 }
0a1b45a2 451 is_branch = false;
cbe79dfe
TG
452 break;
453
454 default:
455 continue;
456 }
457
458 /* Get the value of the symbol referred to by the reloc. */
459 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
460 {
461 /* A local symbol. */
462 Elf_Internal_Sym *isym;
463
464 /* Read this BFD's local symbols. */
465 if (isymbuf == NULL)
466 {
467 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
468 if (isymbuf == NULL)
469 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
470 symtab_hdr->sh_info, 0,
471 NULL, NULL, NULL);
472 if (isymbuf == 0)
473 goto error_return;
474 }
475
476 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
477 if (isym->st_shndx == SHN_UNDEF)
478 continue; /* We can't do anything with undefined symbols. */
479 else if (isym->st_shndx == SHN_ABS)
480 tsec = bfd_abs_section_ptr;
481 else if (isym->st_shndx == SHN_COMMON)
482 tsec = bfd_com_section_ptr;
483 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
484 tsec = bfd_com_section_ptr;
485 else
486 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
487
488 toff = isym->st_value;
0a1b45a2 489 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, false);
cbe79dfe
TG
490 symtype = ELF_ST_TYPE (isym->st_info);
491 }
492 else
493 {
494 unsigned long indx;
495 struct elf_link_hash_entry *h;
496
497 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
498 h = elf_sym_hashes (abfd)[indx];
499 BFD_ASSERT (h != NULL);
500
501 while (h->root.type == bfd_link_hash_indirect
502 || h->root.type == bfd_link_hash_warning)
503 h = (struct elf_link_hash_entry *) h->root.u.i.link;
504
0a1b45a2 505 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, false);
cbe79dfe
TG
506
507 /* For branches to dynamic symbols, we're interested instead
508 in a branch to the PLT entry. */
509 if (is_branch && dyn_i && dyn_i->want_plt2)
510 {
511 /* Internal branches shouldn't be sent to the PLT.
512 Leave this for now and we'll give an error later. */
513 if (r_type != R_IA64_PCREL21B)
514 continue;
515
516 tsec = ia64_info->root.splt;
517 toff = dyn_i->plt2_offset;
518 BFD_ASSERT (irel->r_addend == 0);
519 }
520
521 /* Can't do anything else with dynamic symbols. */
522 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
523 continue;
524
525 else
526 {
527 /* We can't do anything with undefined symbols. */
528 if (h->root.type == bfd_link_hash_undefined
529 || h->root.type == bfd_link_hash_undefweak)
530 continue;
531
532 tsec = h->root.u.def.section;
533 toff = h->root.u.def.value;
534 }
535
536 symtype = h->type;
537 }
538
dbaa2011 539 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
cbe79dfe
TG
540 {
541 /* At this stage in linking, no SEC_MERGE symbol has been
542 adjusted, so all references to such symbols need to be
543 passed through _bfd_merged_section_offset. (Later, in
544 relocate_section, all SEC_MERGE symbols *except* for
545 section symbols have been adjusted.)
546
547 gas may reduce relocations against symbols in SEC_MERGE
548 sections to a relocation against the section symbol when
549 the original addend was zero. When the reloc is against
550 a section symbol we should include the addend in the
551 offset passed to _bfd_merged_section_offset, since the
552 location of interest is the original symbol. On the
553 other hand, an access to "sym+addend" where "sym" is not
554 a section symbol should not include the addend; Such an
555 access is presumed to be an offset from "sym"; The
556 location of interest is just "sym". */
557 if (symtype == STT_SECTION)
558 toff += irel->r_addend;
559
560 toff = _bfd_merged_section_offset (abfd, &tsec,
561 elf_section_data (tsec)->sec_info,
562 toff);
563
564 if (symtype != STT_SECTION)
565 toff += irel->r_addend;
566 }
567 else
568 toff += irel->r_addend;
569
570 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
571
572 roff = irel->r_offset;
573
574 if (is_branch)
575 {
576 bfd_signed_vma offset;
577
578 reladdr = (sec->output_section->vma
579 + sec->output_offset
580 + roff) & (bfd_vma) -4;
581
582 /* The .plt section is aligned at 32byte and the .text section
583 is aligned at 64byte. The .text section is right after the
584 .plt section. After the first relaxation pass, linker may
585 increase the gap between the .plt and .text sections up
586 to 32byte. We assume linker will always insert 32byte
a8685210 587 between the .plt and .text sections after the first
cbe79dfe
TG
588 relaxation pass. */
589 if (tsec == ia64_info->root.splt)
590 offset = -0x1000000 + 32;
591 else
592 offset = -0x1000000;
593
594 /* If the branch is in range, no need to do anything. */
d17fe7b7 595 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
cbe79dfe
TG
596 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
597 {
598 /* If the 60-bit branch is in 21-bit range, optimize it. */
599 if (r_type == R_IA64_PCREL60B)
600 {
601 ia64_elf_relax_brl (contents, roff);
602
603 irel->r_info
604 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
605 R_IA64_PCREL21B);
606
607 /* If the original relocation offset points to slot
608 1, change it to slot 2. */
609 if ((irel->r_offset & 3) == 1)
610 irel->r_offset += 1;
6f6372fa 611
0a1b45a2
AM
612 changed_contents = true;
613 changed_relocs = true;
cbe79dfe
TG
614 }
615
616 continue;
617 }
618 else if (r_type == R_IA64_PCREL60B)
619 continue;
620 else if (ia64_elf_relax_br (contents, roff))
621 {
622 irel->r_info
623 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
624 R_IA64_PCREL60B);
625
626 /* Make the relocation offset point to slot 1. */
627 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
6f6372fa 628
0a1b45a2
AM
629 changed_contents = true;
630 changed_relocs = true;
cbe79dfe
TG
631 continue;
632 }
633
634 /* We can't put a trampoline in a .init/.fini section. Issue
635 an error. */
636 if (strcmp (sec->output_section->name, ".init") == 0
637 || strcmp (sec->output_section->name, ".fini") == 0)
638 {
4eca0228 639 _bfd_error_handler
695344c0 640 /* xgettext:c-format */
38f14ab8
AM
641 (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';"
642 " please use brl or indirect branch"),
2dcf00ce 643 sec->owner, (uint64_t) roff, sec);
cbe79dfe
TG
644 bfd_set_error (bfd_error_bad_value);
645 goto error_return;
646 }
647
648 /* If the branch and target are in the same section, you've
649 got one honking big section and we can't help you unless
650 you are branching backwards. You'll get an error message
651 later. */
652 if (tsec == sec && toff > roff)
653 continue;
654
655 /* Look for an existing fixup to this address. */
656 for (f = fixups; f ; f = f->next)
657 if (f->tsec == tsec && f->toff == toff)
658 break;
659
660 if (f == NULL)
661 {
662 /* Two alternatives: If it's a branch to a PLT entry, we can
663 make a copy of the FULL_PLT entry. Otherwise, we'll have
664 to use a `brl' insn to get where we're going. */
665
666 size_t size;
667
668 if (tsec == ia64_info->root.splt)
669 size = sizeof (plt_full_entry);
670 else
671 size = oor_branch_size;
672
673 /* Resize the current section to make room for the new branch. */
674 trampoff = (sec->size + 15) & (bfd_vma) -16;
675
676 /* If trampoline is out of range, there is nothing we
677 can do. */
678 offset = trampoff - (roff & (bfd_vma) -4);
679 if (offset < -0x1000000 || offset > 0x0FFFFF0)
680 continue;
681
682 amt = trampoff + size;
683 contents = (bfd_byte *) bfd_realloc (contents, amt);
684 if (contents == NULL)
685 goto error_return;
686 sec->size = amt;
687
688 if (tsec == ia64_info->root.splt)
689 {
690 memcpy (contents + trampoff, plt_full_entry, size);
691
692 /* Hijack the old relocation for use as the PLTOFF reloc. */
693 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
694 R_IA64_PLTOFF22);
695 irel->r_offset = trampoff;
696 }
697 else
698 {
699 if (size == sizeof (oor_ip))
700 {
701 memcpy (contents + trampoff, oor_ip, size);
702 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
703 R_IA64_PCREL64I);
704 irel->r_addend -= 16;
705 irel->r_offset = trampoff + 2;
706 }
707 else
708 {
709 memcpy (contents + trampoff, oor_brl, size);
710 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
711 R_IA64_PCREL60B);
712 irel->r_offset = trampoff + 2;
713 }
714
715 }
716
717 /* Record the fixup so we don't do it again this section. */
718 f = (struct one_fixup *)
719 bfd_malloc ((bfd_size_type) sizeof (*f));
720 f->next = fixups;
721 f->tsec = tsec;
722 f->toff = toff;
723 f->trampoff = trampoff;
724 fixups = f;
725 }
726 else
727 {
728 /* If trampoline is out of range, there is nothing we
729 can do. */
730 offset = f->trampoff - (roff & (bfd_vma) -4);
731 if (offset < -0x1000000 || offset > 0x0FFFFF0)
732 continue;
733
734 /* Nop out the reloc, since we're finalizing things here. */
735 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
736 }
737
738 /* Fix up the existing branch to hit the trampoline. */
739 if (ia64_elf_install_value (contents + roff, offset, r_type)
740 != bfd_reloc_ok)
741 goto error_return;
742
0a1b45a2
AM
743 changed_contents = true;
744 changed_relocs = true;
cbe79dfe
TG
745 }
746 else
747 {
748 /* Fetch the gp. */
749 if (gp == 0)
750 {
751 bfd *obfd = sec->output_section->owner;
752 gp = _bfd_get_gp_value (obfd);
753 if (gp == 0)
754 {
0a1b45a2 755 if (!elfNN_ia64_choose_gp (obfd, link_info, false))
cbe79dfe
TG
756 goto error_return;
757 gp = _bfd_get_gp_value (obfd);
758 }
759 }
760
761 /* If the data is out of range, do nothing. */
762 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
763 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
764 continue;
765
766 if (r_type == R_IA64_GPREL22)
767 elfNN_ia64_update_short_info (tsec->output_section,
768 tsec->output_offset + toff,
769 ia64_info);
770 else if (r_type == R_IA64_LTOFF22X)
771 {
772 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
773 R_IA64_GPREL22);
0a1b45a2 774 changed_relocs = true;
cbe79dfe
TG
775 if (dyn_i->want_gotx)
776 {
777 dyn_i->want_gotx = 0;
778 changed_got |= !dyn_i->want_got;
779 }
780
781 elfNN_ia64_update_short_info (tsec->output_section,
782 tsec->output_offset + toff,
783 ia64_info);
784 }
785 else
786 {
787 ia64_elf_relax_ldxmov (contents, roff);
788 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
0a1b45a2
AM
789 changed_contents = true;
790 changed_relocs = true;
cbe79dfe
TG
791 }
792 }
793 }
794
795 /* ??? If we created fixups, this may push the code segment large
796 enough that the data segment moves, which will change the GP.
797 Reset the GP so that we re-calculate next round. We need to
798 do this at the _beginning_ of the next round; now will not do. */
799
800 /* Clean up and go home. */
801 while (fixups)
802 {
803 struct one_fixup *f = fixups;
804 fixups = fixups->next;
805 free (f);
806 }
807
808 if (isymbuf != NULL
809 && symtab_hdr->contents != (unsigned char *) isymbuf)
810 {
811 if (! link_info->keep_memory)
812 free (isymbuf);
813 else
814 {
815 /* Cache the symbols for elf_link_input_bfd. */
816 symtab_hdr->contents = (unsigned char *) isymbuf;
817 }
818 }
819
820 if (contents != NULL
821 && elf_section_data (sec)->this_hdr.contents != contents)
822 {
823 if (!changed_contents && !link_info->keep_memory)
824 free (contents);
825 else
826 {
827 /* Cache the section contents for elf_link_input_bfd. */
828 elf_section_data (sec)->this_hdr.contents = contents;
829 }
830 }
831
832 if (elf_section_data (sec)->relocs != internal_relocs)
833 {
834 if (!changed_relocs)
835 free (internal_relocs);
836 else
837 elf_section_data (sec)->relocs = internal_relocs;
838 }
839
840 if (changed_got)
841 {
842 struct elfNN_ia64_allocate_data data;
843 data.info = link_info;
844 data.ofs = 0;
845 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
846
847 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
848 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
849 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
850 ia64_info->root.sgot->size = data.ofs;
851
852 if (ia64_info->root.dynamic_sections_created
853 && ia64_info->root.srelgot != NULL)
854 {
855 /* Resize .rela.got. */
856 ia64_info->root.srelgot->size = 0;
0e1862bb 857 if (bfd_link_pic (link_info)
cbe79dfe
TG
858 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
859 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
0a1b45a2 860 data.only_got = true;
cbe79dfe
TG
861 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
862 &data);
863 }
864 }
865
866 if (link_info->relax_pass == 0)
867 {
868 /* Pass 0 is only needed to relax br. */
869 sec->skip_relax_pass_0 = skip_relax_pass_0;
870 sec->skip_relax_pass_1 = skip_relax_pass_1;
871 }
872
873 *again = changed_contents || changed_relocs;
0a1b45a2 874 return true;
cbe79dfe
TG
875
876 error_return:
c9594989 877 if ((unsigned char *) isymbuf != symtab_hdr->contents)
cbe79dfe 878 free (isymbuf);
c9594989 879 if (elf_section_data (sec)->this_hdr.contents != contents)
cbe79dfe 880 free (contents);
c9594989 881 if (elf_section_data (sec)->relocs != internal_relocs)
cbe79dfe 882 free (internal_relocs);
0a1b45a2 883 return false;
cbe79dfe
TG
884}
885#undef skip_relax_pass_0
886#undef skip_relax_pass_1
887\f
888/* Return TRUE if NAME is an unwind table section name. */
889
0a1b45a2 890static inline bool
cbe79dfe
TG
891is_unwind_section_name (bfd *abfd, const char *name)
892{
893 if (elfNN_ia64_hpux_vec (abfd->xvec)
894 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
0a1b45a2 895 return false;
cbe79dfe 896
08dedd66
ML
897 return ((startswith (name, ELF_STRING_ia64_unwind)
898 && ! startswith (name, ELF_STRING_ia64_unwind_info))
899 || startswith (name, ELF_STRING_ia64_unwind_once));
cbe79dfe
TG
900}
901
902/* Handle an IA-64 specific section when reading an object file. This
903 is called when bfd_section_from_shdr finds a section with an unknown
904 type. */
905
0a1b45a2 906static bool
cbe79dfe
TG
907elfNN_ia64_section_from_shdr (bfd *abfd,
908 Elf_Internal_Shdr *hdr,
909 const char *name,
910 int shindex)
911{
912 /* There ought to be a place to keep ELF backend specific flags, but
913 at the moment there isn't one. We just keep track of the
914 sections by their name, instead. Fortunately, the ABI gives
915 suggested names for all the MIPS specific sections, so we will
916 probably get away with this. */
917 switch (hdr->sh_type)
918 {
919 case SHT_IA_64_UNWIND:
920 case SHT_IA_64_HP_OPT_ANOT:
921 break;
922
923 case SHT_IA_64_EXT:
924 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
0a1b45a2 925 return false;
cbe79dfe
TG
926 break;
927
928 default:
0a1b45a2 929 return false;
cbe79dfe
TG
930 }
931
932 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
0a1b45a2 933 return false;
cbe79dfe 934
0a1b45a2 935 return true;
cbe79dfe
TG
936}
937
938/* Convert IA-64 specific section flags to bfd internal section flags. */
939
940/* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
941 flag. */
942
0a1b45a2 943static bool
8c803a2d 944elfNN_ia64_section_flags (const Elf_Internal_Shdr *hdr)
cbe79dfe
TG
945{
946 if (hdr->sh_flags & SHF_IA_64_SHORT)
8c803a2d 947 hdr->bfd_section->flags |= SEC_SMALL_DATA;
cbe79dfe 948
0a1b45a2 949 return true;
cbe79dfe
TG
950}
951
952/* Set the correct type for an IA-64 ELF section. We do this by the
953 section name, which is a hack, but ought to work. */
954
0a1b45a2 955static bool
cbe79dfe
TG
956elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
957 asection *sec)
958{
959 const char *name;
960
fd361982 961 name = bfd_section_name (sec);
cbe79dfe
TG
962
963 if (is_unwind_section_name (abfd, name))
964 {
965 /* We don't have the sections numbered at this point, so sh_info
966 is set later, in elfNN_ia64_final_write_processing. */
967 hdr->sh_type = SHT_IA_64_UNWIND;
968 hdr->sh_flags |= SHF_LINK_ORDER;
969 }
970 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
971 hdr->sh_type = SHT_IA_64_EXT;
972 else if (strcmp (name, ".HP.opt_annot") == 0)
973 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
974 else if (strcmp (name, ".reloc") == 0)
975 /* This is an ugly, but unfortunately necessary hack that is
976 needed when producing EFI binaries on IA-64. It tells
977 elf.c:elf_fake_sections() not to consider ".reloc" as a section
978 containing ELF relocation info. We need this hack in order to
979 be able to generate ELF binaries that can be translated into
980 EFI applications (which are essentially COFF objects). Those
981 files contain a COFF ".reloc" section inside an ELFNN object,
982 which would normally cause BFD to segfault because it would
983 attempt to interpret this section as containing relocation
984 entries for section "oc". With this hack enabled, ".reloc"
985 will be treated as a normal data section, which will avoid the
986 segfault. However, you won't be able to create an ELFNN binary
987 with a section named "oc" that needs relocations, but that's
988 the kind of ugly side-effects you get when detecting section
989 types based on their names... In practice, this limitation is
990 unlikely to bite. */
991 hdr->sh_type = SHT_PROGBITS;
992
993 if (sec->flags & SEC_SMALL_DATA)
994 hdr->sh_flags |= SHF_IA_64_SHORT;
995
996 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
997
998 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
999 hdr->sh_flags |= SHF_IA_64_HP_TLS;
1000
0a1b45a2 1001 return true;
cbe79dfe
TG
1002}
1003
1004/* The final processing done just before writing out an IA-64 ELF
1005 object file. */
1006
0a1b45a2 1007static bool
cc364be6 1008elfNN_ia64_final_write_processing (bfd *abfd)
cbe79dfe
TG
1009{
1010 Elf_Internal_Shdr *hdr;
1011 asection *s;
1012
1013 for (s = abfd->sections; s; s = s->next)
1014 {
1015 hdr = &elf_section_data (s)->this_hdr;
1016 switch (hdr->sh_type)
1017 {
1018 case SHT_IA_64_UNWIND:
1019 /* The IA-64 processor-specific ABI requires setting sh_link
1020 to the unwind section, whereas HP-UX requires sh_info to
1021 do so. For maximum compatibility, we'll set both for
1022 now... */
1023 hdr->sh_info = hdr->sh_link;
1024 break;
1025 }
1026 }
1027
1028 if (! elf_flags_init (abfd))
1029 {
1030 unsigned long flags = 0;
1031
1032 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1033 flags |= EF_IA_64_BE;
1034 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1035 flags |= EF_IA_64_ABI64;
1036
1037 elf_elfheader(abfd)->e_flags = flags;
0a1b45a2 1038 elf_flags_init (abfd) = true;
cbe79dfe 1039 }
cc364be6 1040 return _bfd_elf_final_write_processing (abfd);
cbe79dfe
TG
1041}
1042
1043/* Hook called by the linker routine which adds symbols from an object
1044 file. We use it to put .comm items in .sbss, and not .bss. */
1045
0a1b45a2 1046static bool
cbe79dfe
TG
1047elfNN_ia64_add_symbol_hook (bfd *abfd,
1048 struct bfd_link_info *info,
1049 Elf_Internal_Sym *sym,
1050 const char **namep ATTRIBUTE_UNUSED,
1051 flagword *flagsp ATTRIBUTE_UNUSED,
1052 asection **secp,
1053 bfd_vma *valp)
1054{
1055 if (sym->st_shndx == SHN_COMMON
0e1862bb 1056 && !bfd_link_relocatable (info)
cbe79dfe
TG
1057 && sym->st_size <= elf_gp_size (abfd))
1058 {
1059 /* Common symbols less than or equal to -G nn bytes are
1060 automatically put into .sbss. */
1061
1062 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1063
1064 if (scomm == NULL)
1065 {
1066 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1067 (SEC_ALLOC
1068 | SEC_IS_COMMON
10885e24 1069 | SEC_SMALL_DATA
cbe79dfe
TG
1070 | SEC_LINKER_CREATED));
1071 if (scomm == NULL)
0a1b45a2 1072 return false;
cbe79dfe
TG
1073 }
1074
1075 *secp = scomm;
1076 *valp = sym->st_size;
1077 }
1078
0a1b45a2 1079 return true;
cbe79dfe
TG
1080}
1081
1082/* Return the number of additional phdrs we will need. */
1083
1084static int
1085elfNN_ia64_additional_program_headers (bfd *abfd,
1086 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1087{
1088 asection *s;
1089 int ret = 0;
1090
1091 /* See if we need a PT_IA_64_ARCHEXT segment. */
1092 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1093 if (s && (s->flags & SEC_LOAD))
1094 ++ret;
1095
1096 /* Count how many PT_IA_64_UNWIND segments we need. */
1097 for (s = abfd->sections; s; s = s->next)
1098 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1099 ++ret;
1100
1101 return ret;
1102}
1103
0a1b45a2 1104static bool
cbe79dfe
TG
1105elfNN_ia64_modify_segment_map (bfd *abfd,
1106 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1107{
1108 struct elf_segment_map *m, **pm;
1109 Elf_Internal_Shdr *hdr;
1110 asection *s;
1111
1112 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1113 all PT_LOAD segments. */
1114 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1115 if (s && (s->flags & SEC_LOAD))
1116 {
12bd6957 1117 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
cbe79dfe
TG
1118 if (m->p_type == PT_IA_64_ARCHEXT)
1119 break;
1120 if (m == NULL)
1121 {
1122 m = ((struct elf_segment_map *)
1123 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1124 if (m == NULL)
0a1b45a2 1125 return false;
cbe79dfe
TG
1126
1127 m->p_type = PT_IA_64_ARCHEXT;
1128 m->count = 1;
1129 m->sections[0] = s;
1130
1131 /* We want to put it after the PHDR and INTERP segments. */
12bd6957 1132 pm = &elf_seg_map (abfd);
cbe79dfe
TG
1133 while (*pm != NULL
1134 && ((*pm)->p_type == PT_PHDR
1135 || (*pm)->p_type == PT_INTERP))
1136 pm = &(*pm)->next;
1137
1138 m->next = *pm;
1139 *pm = m;
1140 }
1141 }
1142
1143 /* Install PT_IA_64_UNWIND segments, if needed. */
1144 for (s = abfd->sections; s; s = s->next)
1145 {
1146 hdr = &elf_section_data (s)->this_hdr;
1147 if (hdr->sh_type != SHT_IA_64_UNWIND)
1148 continue;
1149
1150 if (s && (s->flags & SEC_LOAD))
1151 {
12bd6957 1152 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
cbe79dfe
TG
1153 if (m->p_type == PT_IA_64_UNWIND)
1154 {
1155 int i;
1156
1157 /* Look through all sections in the unwind segment
1158 for a match since there may be multiple sections
1159 to a segment. */
1160 for (i = m->count - 1; i >= 0; --i)
1161 if (m->sections[i] == s)
1162 break;
1163
1164 if (i >= 0)
1165 break;
1166 }
1167
1168 if (m == NULL)
1169 {
1170 m = ((struct elf_segment_map *)
1171 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1172 if (m == NULL)
0a1b45a2 1173 return false;
cbe79dfe
TG
1174
1175 m->p_type = PT_IA_64_UNWIND;
1176 m->count = 1;
1177 m->sections[0] = s;
1178 m->next = NULL;
1179
1180 /* We want to put it last. */
12bd6957 1181 pm = &elf_seg_map (abfd);
cbe79dfe
TG
1182 while (*pm != NULL)
1183 pm = &(*pm)->next;
1184 *pm = m;
1185 }
1186 }
1187 }
1188
0a1b45a2 1189 return true;
cbe79dfe
TG
1190}
1191
1192/* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1193 the input sections for each output section in the segment and testing
1194 for SHF_IA_64_NORECOV on each. */
1195
0a1b45a2 1196static bool
6d6c25c8 1197elfNN_ia64_modify_headers (bfd *abfd, struct bfd_link_info *info)
cbe79dfe
TG
1198{
1199 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1200 struct elf_segment_map *m;
1201 Elf_Internal_Phdr *p;
1202
12bd6957 1203 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
cbe79dfe
TG
1204 if (m->p_type == PT_LOAD)
1205 {
1206 int i;
1207 for (i = m->count - 1; i >= 0; --i)
1208 {
1209 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1210
1211 while (order != NULL)
1212 {
1213 if (order->type == bfd_indirect_link_order)
1214 {
1215 asection *is = order->u.indirect.section;
1216 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1217 if (flags & SHF_IA_64_NORECOV)
1218 {
1219 p->p_flags |= PF_IA_64_NORECOV;
1220 goto found;
1221 }
1222 }
1223 order = order->next;
1224 }
1225 }
1226 found:;
1227 }
1228
6d6c25c8 1229 return _bfd_elf_modify_headers (abfd, info);
cbe79dfe
TG
1230}
1231
1232/* According to the Tahoe assembler spec, all labels starting with a
1233 '.' are local. */
1234
0a1b45a2 1235static bool
cbe79dfe
TG
1236elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1237 const char *name)
1238{
1239 return name[0] == '.';
1240}
1241
1242/* Should we do dynamic things to this symbol? */
1243
0a1b45a2 1244static bool
cbe79dfe
TG
1245elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1246 struct bfd_link_info *info, int r_type)
1247{
0a1b45a2 1248 bool ignore_protected
cbe79dfe
TG
1249 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1250 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1251
1252 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1253}
1254\f
1255static struct bfd_hash_entry*
1256elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1257 struct bfd_hash_table *table,
1258 const char *string)
1259{
1260 struct elfNN_ia64_link_hash_entry *ret;
1261 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1262
1263 /* Allocate the structure if it has not already been allocated by a
1264 subclass. */
1265 if (!ret)
1266 ret = bfd_hash_allocate (table, sizeof (*ret));
1267
1268 if (!ret)
1269 return 0;
1270
1271 /* Call the allocation method of the superclass. */
1272 ret = ((struct elfNN_ia64_link_hash_entry *)
1273 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1274 table, string));
1275
1276 ret->info = NULL;
1277 ret->count = 0;
1278 ret->sorted_count = 0;
1279 ret->size = 0;
1280 return (struct bfd_hash_entry *) ret;
1281}
1282
1283static void
1284elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1285 struct elf_link_hash_entry *xdir,
1286 struct elf_link_hash_entry *xind)
1287{
1288 struct elfNN_ia64_link_hash_entry *dir, *ind;
1289
1290 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1291 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1292
1293 /* Copy down any references that we may have already seen to the
1294 symbol which just became indirect. */
1295
e81830c5
AM
1296 if (dir->root.versioned != versioned_hidden)
1297 dir->root.ref_dynamic |= ind->root.ref_dynamic;
cbe79dfe
TG
1298 dir->root.ref_regular |= ind->root.ref_regular;
1299 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1300 dir->root.needs_plt |= ind->root.needs_plt;
1301
1302 if (ind->root.root.type != bfd_link_hash_indirect)
1303 return;
1304
1305 /* Copy over the got and plt data. This would have been done
1306 by check_relocs. */
1307
1308 if (ind->info != NULL)
1309 {
1310 struct elfNN_ia64_dyn_sym_info *dyn_i;
1311 unsigned int count;
1312
c9594989 1313 free (dir->info);
cbe79dfe
TG
1314
1315 dir->info = ind->info;
1316 dir->count = ind->count;
1317 dir->sorted_count = ind->sorted_count;
1318 dir->size = ind->size;
1319
1320 ind->info = NULL;
1321 ind->count = 0;
1322 ind->sorted_count = 0;
1323 ind->size = 0;
1324
1325 /* Fix up the dyn_sym_info pointers to the global symbol. */
1326 for (count = dir->count, dyn_i = dir->info;
1327 count != 0;
1328 count--, dyn_i++)
1329 dyn_i->h = &dir->root;
1330 }
1331
1332 /* Copy over the dynindx. */
1333
1334 if (ind->root.dynindx != -1)
1335 {
1336 if (dir->root.dynindx != -1)
1337 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1338 dir->root.dynstr_index);
1339 dir->root.dynindx = ind->root.dynindx;
1340 dir->root.dynstr_index = ind->root.dynstr_index;
1341 ind->root.dynindx = -1;
1342 ind->root.dynstr_index = 0;
1343 }
1344}
1345
1346static void
1347elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1348 struct elf_link_hash_entry *xh,
0a1b45a2 1349 bool force_local)
cbe79dfe
TG
1350{
1351 struct elfNN_ia64_link_hash_entry *h;
1352 struct elfNN_ia64_dyn_sym_info *dyn_i;
1353 unsigned int count;
1354
1355 h = (struct elfNN_ia64_link_hash_entry *)xh;
1356
1357 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1358
1359 for (count = h->count, dyn_i = h->info;
1360 count != 0;
1361 count--, dyn_i++)
1362 {
1363 dyn_i->want_plt2 = 0;
1364 dyn_i->want_plt = 0;
1365 }
1366}
1367
1368/* Compute a hash of a local hash entry. */
1369
1370static hashval_t
1371elfNN_ia64_local_htab_hash (const void *ptr)
1372{
1373 struct elfNN_ia64_local_hash_entry *entry
1374 = (struct elfNN_ia64_local_hash_entry *) ptr;
1375
1376 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1377}
1378
1379/* Compare local hash entries. */
1380
1381static int
1382elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1383{
1384 struct elfNN_ia64_local_hash_entry *entry1
1385 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1386 struct elfNN_ia64_local_hash_entry *entry2
1387 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1388
1389 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1390}
1391
cbe79dfe
TG
1392/* Free the global elfNN_ia64_dyn_sym_info array. */
1393
0a1b45a2 1394static bool
2cc15b10
AM
1395elfNN_ia64_global_dyn_info_free (struct elf_link_hash_entry *xentry,
1396 void *unused ATTRIBUTE_UNUSED)
cbe79dfe
TG
1397{
1398 struct elfNN_ia64_link_hash_entry *entry
1399 = (struct elfNN_ia64_link_hash_entry *) xentry;
1400
c9594989
AM
1401 free (entry->info);
1402 entry->info = NULL;
1403 entry->count = 0;
1404 entry->sorted_count = 0;
1405 entry->size = 0;
cbe79dfe 1406
0a1b45a2 1407 return true;
cbe79dfe
TG
1408}
1409
1410/* Free the local elfNN_ia64_dyn_sym_info array. */
1411
1201fda6 1412static int
cbe79dfe 1413elfNN_ia64_local_dyn_info_free (void **slot,
2c3fc389 1414 void * unused ATTRIBUTE_UNUSED)
cbe79dfe
TG
1415{
1416 struct elfNN_ia64_local_hash_entry *entry
1417 = (struct elfNN_ia64_local_hash_entry *) *slot;
1418
c9594989
AM
1419 free (entry->info);
1420 entry->info = NULL;
1421 entry->count = 0;
1422 entry->sorted_count = 0;
1423 entry->size = 0;
cbe79dfe 1424
0a1b45a2 1425 return true;
cbe79dfe
TG
1426}
1427
1428/* Destroy IA-64 linker hash table. */
1429
1430static void
d495ab0d 1431elfNN_ia64_link_hash_table_free (bfd *obfd)
cbe79dfe
TG
1432{
1433 struct elfNN_ia64_link_hash_table *ia64_info
d495ab0d 1434 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
cbe79dfe
TG
1435 if (ia64_info->loc_hash_table)
1436 {
1437 htab_traverse (ia64_info->loc_hash_table,
1438 elfNN_ia64_local_dyn_info_free, NULL);
1439 htab_delete (ia64_info->loc_hash_table);
1440 }
1441 if (ia64_info->loc_hash_memory)
1442 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1443 elf_link_hash_traverse (&ia64_info->root,
1444 elfNN_ia64_global_dyn_info_free, NULL);
d495ab0d 1445 _bfd_elf_link_hash_table_free (obfd);
cbe79dfe
TG
1446}
1447
68faa637
AM
1448/* Create the derived linker hash table. The IA-64 ELF port uses this
1449 derived hash table to keep information specific to the IA-64 ElF
1450 linker (without using static variables). */
1451
1452static struct bfd_link_hash_table *
1453elfNN_ia64_hash_table_create (bfd *abfd)
1454{
1455 struct elfNN_ia64_link_hash_table *ret;
1456
1457 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1458 if (!ret)
1459 return NULL;
1460
1461 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1462 elfNN_ia64_new_elf_hash_entry,
1463 sizeof (struct elfNN_ia64_link_hash_entry),
1464 IA64_ELF_DATA))
1465 {
1466 free (ret);
1467 return NULL;
1468 }
1469
1470 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1471 elfNN_ia64_local_htab_eq, NULL);
1472 ret->loc_hash_memory = objalloc_create ();
1473 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1474 {
d495ab0d 1475 elfNN_ia64_link_hash_table_free (abfd);
68faa637
AM
1476 return NULL;
1477 }
d495ab0d 1478 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
0a1b45a2 1479 ret->root.dt_pltgot_required = true;
68faa637
AM
1480
1481 return &ret->root.root;
1482}
1483
cbe79dfe
TG
1484/* Traverse both local and global hash tables. */
1485
1486struct elfNN_ia64_dyn_sym_traverse_data
1487{
0a1b45a2 1488 bool (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
2c3fc389 1489 void * data;
cbe79dfe
TG
1490};
1491
0a1b45a2 1492static bool
2cc15b10 1493elfNN_ia64_global_dyn_sym_thunk (struct elf_link_hash_entry *xentry,
2c3fc389 1494 void * xdata)
cbe79dfe
TG
1495{
1496 struct elfNN_ia64_link_hash_entry *entry
1497 = (struct elfNN_ia64_link_hash_entry *) xentry;
1498 struct elfNN_ia64_dyn_sym_traverse_data *data
1499 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1500 struct elfNN_ia64_dyn_sym_info *dyn_i;
1501 unsigned int count;
1502
cbe79dfe
TG
1503 for (count = entry->count, dyn_i = entry->info;
1504 count != 0;
1505 count--, dyn_i++)
1506 if (! (*data->func) (dyn_i, data->data))
0a1b45a2
AM
1507 return false;
1508 return true;
cbe79dfe
TG
1509}
1510
1201fda6 1511static int
2c3fc389 1512elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
cbe79dfe
TG
1513{
1514 struct elfNN_ia64_local_hash_entry *entry
1515 = (struct elfNN_ia64_local_hash_entry *) *slot;
1516 struct elfNN_ia64_dyn_sym_traverse_data *data
1517 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1518 struct elfNN_ia64_dyn_sym_info *dyn_i;
1519 unsigned int count;
1520
1521 for (count = entry->count, dyn_i = entry->info;
1522 count != 0;
1523 count--, dyn_i++)
1524 if (! (*data->func) (dyn_i, data->data))
0a1b45a2
AM
1525 return false;
1526 return true;
cbe79dfe
TG
1527}
1528
1529static void
1530elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
0a1b45a2
AM
1531 bool (*func) (struct elfNN_ia64_dyn_sym_info *,
1532 void *),
2c3fc389 1533 void * data)
cbe79dfe
TG
1534{
1535 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1536
1537 xdata.func = func;
1538 xdata.data = data;
1539
1540 elf_link_hash_traverse (&ia64_info->root,
1541 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1542 htab_traverse (ia64_info->loc_hash_table,
1543 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1544}
1545\f
0a1b45a2 1546static bool
cbe79dfe
TG
1547elfNN_ia64_create_dynamic_sections (bfd *abfd,
1548 struct bfd_link_info *info)
1549{
1550 struct elfNN_ia64_link_hash_table *ia64_info;
1551 asection *s;
1552
1553 if (! _bfd_elf_create_dynamic_sections (abfd, info))
0a1b45a2 1554 return false;
cbe79dfe
TG
1555
1556 ia64_info = elfNN_ia64_hash_table (info);
1557 if (ia64_info == NULL)
0a1b45a2 1558 return false;
cbe79dfe
TG
1559
1560 {
fd361982
AM
1561 flagword flags = bfd_section_flags (ia64_info->root.sgot);
1562 bfd_set_section_flags (ia64_info->root.sgot, SEC_SMALL_DATA | flags);
cbe79dfe 1563 /* The .got section is always aligned at 8 bytes. */
fd361982 1564 if (!bfd_set_section_alignment (ia64_info->root.sgot, 3))
0a1b45a2 1565 return false;
cbe79dfe
TG
1566 }
1567
1568 if (!get_pltoff (abfd, info, ia64_info))
0a1b45a2 1569 return false;
cbe79dfe 1570
3d4d4302
AM
1571 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1572 (SEC_ALLOC | SEC_LOAD
1573 | SEC_HAS_CONTENTS
1574 | SEC_IN_MEMORY
1575 | SEC_LINKER_CREATED
1576 | SEC_READONLY));
cbe79dfe 1577 if (s == NULL
fd361982 1578 || !bfd_set_section_alignment (s, LOG_SECTION_ALIGN))
0a1b45a2 1579 return false;
cbe79dfe
TG
1580 ia64_info->rel_pltoff_sec = s;
1581
0a1b45a2 1582 return true;
cbe79dfe
TG
1583}
1584
1585/* Find and/or create a hash entry for local symbol. */
1586static struct elfNN_ia64_local_hash_entry *
1587get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1588 bfd *abfd, const Elf_Internal_Rela *rel,
0a1b45a2 1589 bool create)
cbe79dfe
TG
1590{
1591 struct elfNN_ia64_local_hash_entry e, *ret;
1592 asection *sec = abfd->sections;
1593 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1594 ELFNN_R_SYM (rel->r_info));
1595 void **slot;
1596
1597 e.id = sec->id;
1598 e.r_sym = ELFNN_R_SYM (rel->r_info);
1599 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1600 create ? INSERT : NO_INSERT);
1601
1602 if (!slot)
1603 return NULL;
1604
1605 if (*slot)
1606 return (struct elfNN_ia64_local_hash_entry *) *slot;
1607
1608 ret = (struct elfNN_ia64_local_hash_entry *)
1609 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1610 sizeof (struct elfNN_ia64_local_hash_entry));
1611 if (ret)
1612 {
1613 memset (ret, 0, sizeof (*ret));
1614 ret->id = sec->id;
1615 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1616 *slot = ret;
1617 }
1618 return ret;
1619}
1620
1621/* Used to sort elfNN_ia64_dyn_sym_info array. */
1622
1623static int
1624addend_compare (const void *xp, const void *yp)
1625{
1626 const struct elfNN_ia64_dyn_sym_info *x
1627 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1628 const struct elfNN_ia64_dyn_sym_info *y
1629 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1630
1631 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1632}
1633
1634/* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1635
1636static unsigned int
1637sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1638 unsigned int count)
1639{
1640 bfd_vma curr, prev, got_offset;
1641 unsigned int i, kept, dupes, diff, dest, src, len;
1642
1643 qsort (info, count, sizeof (*info), addend_compare);
1644
1645 /* Find the first duplicate. */
1646 prev = info [0].addend;
1647 got_offset = info [0].got_offset;
1648 for (i = 1; i < count; i++)
1649 {
1650 curr = info [i].addend;
1651 if (curr == prev)
1652 {
1653 /* For duplicates, make sure that GOT_OFFSET is valid. */
1654 if (got_offset == (bfd_vma) -1)
1655 got_offset = info [i].got_offset;
1656 break;
1657 }
1658 got_offset = info [i].got_offset;
1659 prev = curr;
1660 }
1661
1662 /* We may move a block of elements to here. */
1663 dest = i++;
1664
1665 /* Remove duplicates. */
1666 if (i < count)
1667 {
1668 while (i < count)
1669 {
1670 /* For duplicates, make sure that the kept one has a valid
1671 got_offset. */
1672 kept = dest - 1;
1673 if (got_offset != (bfd_vma) -1)
1674 info [kept].got_offset = got_offset;
1675
1676 curr = info [i].addend;
1677 got_offset = info [i].got_offset;
1678
1679 /* Move a block of elements whose first one is different from
1680 the previous. */
1681 if (curr == prev)
1682 {
1683 for (src = i + 1; src < count; src++)
1684 {
1685 if (info [src].addend != curr)
1686 break;
1687 /* For duplicates, make sure that GOT_OFFSET is
1688 valid. */
1689 if (got_offset == (bfd_vma) -1)
1690 got_offset = info [src].got_offset;
1691 }
1692
1693 /* Make sure that the kept one has a valid got_offset. */
1694 if (got_offset != (bfd_vma) -1)
1695 info [kept].got_offset = got_offset;
1696 }
1697 else
1698 src = i;
1699
1700 if (src >= count)
1701 break;
1702
1703 /* Find the next duplicate. SRC will be kept. */
1704 prev = info [src].addend;
1705 got_offset = info [src].got_offset;
1706 for (dupes = src + 1; dupes < count; dupes ++)
1707 {
1708 curr = info [dupes].addend;
1709 if (curr == prev)
1710 {
1711 /* Make sure that got_offset is valid. */
1712 if (got_offset == (bfd_vma) -1)
1713 got_offset = info [dupes].got_offset;
1714
1715 /* For duplicates, make sure that the kept one has
1716 a valid got_offset. */
1717 if (got_offset != (bfd_vma) -1)
1718 info [dupes - 1].got_offset = got_offset;
1719 break;
1720 }
1721 got_offset = info [dupes].got_offset;
1722 prev = curr;
1723 }
1724
1725 /* How much to move. */
1726 len = dupes - src;
1727 i = dupes + 1;
1728
1729 if (len == 1 && dupes < count)
1730 {
1731 /* If we only move 1 element, we combine it with the next
1732 one. There must be at least a duplicate. Find the
1733 next different one. */
1734 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1735 {
1736 if (info [diff].addend != curr)
1737 break;
1738 /* Make sure that got_offset is valid. */
1739 if (got_offset == (bfd_vma) -1)
1740 got_offset = info [diff].got_offset;
1741 }
1742
1743 /* Makre sure that the last duplicated one has an valid
1744 offset. */
1745 BFD_ASSERT (curr == prev);
1746 if (got_offset != (bfd_vma) -1)
1747 info [diff - 1].got_offset = got_offset;
1748
1749 if (diff < count)
1750 {
1751 /* Find the next duplicate. Track the current valid
1752 offset. */
1753 prev = info [diff].addend;
1754 got_offset = info [diff].got_offset;
1755 for (dupes = diff + 1; dupes < count; dupes ++)
1756 {
1757 curr = info [dupes].addend;
1758 if (curr == prev)
1759 {
1760 /* For duplicates, make sure that GOT_OFFSET
1761 is valid. */
1762 if (got_offset == (bfd_vma) -1)
1763 got_offset = info [dupes].got_offset;
1764 break;
1765 }
1766 got_offset = info [dupes].got_offset;
1767 prev = curr;
1768 diff++;
1769 }
1770
1771 len = diff - src + 1;
1772 i = diff + 1;
1773 }
1774 }
1775
1776 memmove (&info [dest], &info [src], len * sizeof (*info));
1777
1778 dest += len;
1779 }
1780
1781 count = dest;
1782 }
1783 else
1784 {
1785 /* When we get here, either there is no duplicate at all or
1786 the only duplicate is the last element. */
1787 if (dest < count)
1788 {
1789 /* If the last element is a duplicate, make sure that the
1790 kept one has a valid got_offset. We also update count. */
1791 if (got_offset != (bfd_vma) -1)
1792 info [dest - 1].got_offset = got_offset;
1793 count = dest;
1794 }
1795 }
1796
1797 return count;
1798}
1799
1800/* Find and/or create a descriptor for dynamic symbol info. This will
1801 vary based on global or local symbol, and the addend to the reloc.
1802
1803 We don't sort when inserting. Also, we sort and eliminate
1804 duplicates if there is an unsorted section. Typically, this will
1805 only happen once, because we do all insertions before lookups. We
1806 then use bsearch to do a lookup. This also allows lookups to be
1807 fast. So we have fast insertion (O(log N) due to duplicate check),
1808 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1809 Previously, all lookups were O(N) because of the use of the linked
1810 list and also all insertions were O(N) because of the check for
1811 duplicates. There are some complications here because the array
1812 size grows occasionally, which may add an O(N) factor, but this
1813 should be rare. Also, we free the excess array allocation, which
1814 requires a copy which is O(N), but this only happens once. */
1815
1816static struct elfNN_ia64_dyn_sym_info *
1817get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1818 struct elf_link_hash_entry *h, bfd *abfd,
0a1b45a2 1819 const Elf_Internal_Rela *rel, bool create)
cbe79dfe
TG
1820{
1821 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1822 unsigned int *count_p, *sorted_count_p, *size_p;
1823 unsigned int count, sorted_count, size;
1824 bfd_vma addend = rel ? rel->r_addend : 0;
1825 bfd_size_type amt;
1826
1827 if (h)
1828 {
1829 struct elfNN_ia64_link_hash_entry *global_h;
1830
1831 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1832 info_p = &global_h->info;
1833 count_p = &global_h->count;
1834 sorted_count_p = &global_h->sorted_count;
1835 size_p = &global_h->size;
1836 }
1837 else
1838 {
1839 struct elfNN_ia64_local_hash_entry *loc_h;
1840
1841 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1842 if (!loc_h)
1843 {
1844 BFD_ASSERT (!create);
1845 return NULL;
1846 }
1847
1848 info_p = &loc_h->info;
1849 count_p = &loc_h->count;
1850 sorted_count_p = &loc_h->sorted_count;
1851 size_p = &loc_h->size;
1852 }
1853
1854 count = *count_p;
1855 sorted_count = *sorted_count_p;
1856 size = *size_p;
1857 info = *info_p;
1858 if (create)
1859 {
1860 /* When we create the array, we don't check for duplicates,
07d6d2b8 1861 except in the previously sorted section if one exists, and
cbe79dfe
TG
1862 against the last inserted entry. This allows insertions to
1863 be fast. */
1864 if (info)
1865 {
1866 if (sorted_count)
1867 {
1868 /* Try bsearch first on the sorted section. */
1869 key.addend = addend;
1870 dyn_i = bsearch (&key, info, sorted_count,
1871 sizeof (*info), addend_compare);
cbe79dfe 1872 if (dyn_i)
736c9875 1873 return dyn_i;
cbe79dfe
TG
1874 }
1875
736c9875 1876 if (count != 0)
cbe79dfe 1877 {
736c9875
AM
1878 /* Do a quick check for the last inserted entry. */
1879 dyn_i = info + count - 1;
1880 if (dyn_i->addend == addend)
1881 return dyn_i;
cbe79dfe
TG
1882 }
1883 }
1884
1885 if (size == 0)
1886 {
1887 /* It is the very first element. We create the array of size
1888 1. */
1889 size = 1;
1890 amt = size * sizeof (*info);
1891 info = bfd_malloc (amt);
1892 }
1893 else if (size <= count)
1894 {
1895 /* We double the array size every time when we reach the
1896 size limit. */
1897 size += size;
1898 amt = size * sizeof (*info);
1899 info = bfd_realloc (info, amt);
1900 }
1901 else
1902 goto has_space;
1903
1904 if (info == NULL)
1905 return NULL;
1906 *size_p = size;
1907 *info_p = info;
1908
dc1e8a47 1909 has_space:
cbe79dfe
TG
1910 /* Append the new one to the array. */
1911 dyn_i = info + count;
1912 memset (dyn_i, 0, sizeof (*dyn_i));
1913 dyn_i->got_offset = (bfd_vma) -1;
1914 dyn_i->addend = addend;
1915
1916 /* We increment count only since the new ones are unsorted and
1917 may have duplicate. */
1918 (*count_p)++;
1919 }
1920 else
1921 {
1922 /* It is a lookup without insertion. Sort array if part of the
1923 array isn't sorted. */
1924 if (count != sorted_count)
1925 {
1926 count = sort_dyn_sym_info (info, count);
1927 *count_p = count;
1928 *sorted_count_p = count;
1929 }
1930
1931 /* Free unused memory. */
1932 if (size != count)
1933 {
1934 amt = count * sizeof (*info);
736c9875
AM
1935 info = bfd_realloc (info, amt);
1936 *size_p = count;
1937 if (info == NULL && count != 0)
1938 /* realloc should never fail since we are reducing size here,
1939 but if it does use the old array. */
1940 info = *info_p;
1941 else
1942 *info_p = info;
cbe79dfe
TG
1943 }
1944
736c9875
AM
1945 if (count == 0)
1946 dyn_i = NULL;
1947 else
1948 {
1949 key.addend = addend;
1950 dyn_i = bsearch (&key, info, count, sizeof (*info), addend_compare);
1951 }
cbe79dfe
TG
1952 }
1953
1954 return dyn_i;
1955}
1956
1957static asection *
1958get_got (bfd *abfd, struct bfd_link_info *info,
1959 struct elfNN_ia64_link_hash_table *ia64_info)
1960{
1961 asection *got;
1962 bfd *dynobj;
1963
1964 got = ia64_info->root.sgot;
1965 if (!got)
1966 {
1967 flagword flags;
1968
1969 dynobj = ia64_info->root.dynobj;
1970 if (!dynobj)
1971 ia64_info->root.dynobj = dynobj = abfd;
1972 if (!_bfd_elf_create_got_section (dynobj, info))
a253d456 1973 return NULL;
cbe79dfe
TG
1974
1975 got = ia64_info->root.sgot;
1976
1977 /* The .got section is always aligned at 8 bytes. */
fd361982 1978 if (!bfd_set_section_alignment (got, 3))
a253d456 1979 return NULL;
cbe79dfe 1980
fd361982
AM
1981 flags = bfd_section_flags (got);
1982 if (!bfd_set_section_flags (got, SEC_SMALL_DATA | flags))
a253d456 1983 return NULL;
cbe79dfe
TG
1984 }
1985
1986 return got;
1987}
1988
1989/* Create function descriptor section (.opd). This section is called .opd
1990 because it contains "official procedure descriptors". The "official"
1991 refers to the fact that these descriptors are used when taking the address
1992 of a procedure, thus ensuring a unique address for each procedure. */
1993
1994static asection *
1995get_fptr (bfd *abfd, struct bfd_link_info *info,
1996 struct elfNN_ia64_link_hash_table *ia64_info)
1997{
1998 asection *fptr;
1999 bfd *dynobj;
2000
2001 fptr = ia64_info->fptr_sec;
2002 if (!fptr)
2003 {
2004 dynobj = ia64_info->root.dynobj;
2005 if (!dynobj)
2006 ia64_info->root.dynobj = dynobj = abfd;
2007
3d4d4302
AM
2008 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
2009 (SEC_ALLOC
2010 | SEC_LOAD
2011 | SEC_HAS_CONTENTS
2012 | SEC_IN_MEMORY
0e1862bb
L
2013 | (bfd_link_pie (info)
2014 ? 0 : SEC_READONLY)
3d4d4302 2015 | SEC_LINKER_CREATED));
cbe79dfe 2016 if (!fptr
fd361982 2017 || !bfd_set_section_alignment (fptr, 4))
cbe79dfe
TG
2018 {
2019 BFD_ASSERT (0);
2020 return NULL;
2021 }
2022
2023 ia64_info->fptr_sec = fptr;
2024
0e1862bb 2025 if (bfd_link_pie (info))
cbe79dfe
TG
2026 {
2027 asection *fptr_rel;
3d4d4302
AM
2028 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2029 (SEC_ALLOC | SEC_LOAD
2030 | SEC_HAS_CONTENTS
2031 | SEC_IN_MEMORY
2032 | SEC_LINKER_CREATED
2033 | SEC_READONLY));
cbe79dfe 2034 if (fptr_rel == NULL
fd361982 2035 || !bfd_set_section_alignment (fptr_rel, LOG_SECTION_ALIGN))
cbe79dfe
TG
2036 {
2037 BFD_ASSERT (0);
2038 return NULL;
2039 }
2040
2041 ia64_info->rel_fptr_sec = fptr_rel;
2042 }
2043 }
2044
2045 return fptr;
2046}
2047
2048static asection *
2049get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2050 struct elfNN_ia64_link_hash_table *ia64_info)
2051{
2052 asection *pltoff;
2053 bfd *dynobj;
2054
2055 pltoff = ia64_info->pltoff_sec;
2056 if (!pltoff)
2057 {
2058 dynobj = ia64_info->root.dynobj;
2059 if (!dynobj)
2060 ia64_info->root.dynobj = dynobj = abfd;
2061
3d4d4302
AM
2062 pltoff = bfd_make_section_anyway_with_flags (dynobj,
2063 ELF_STRING_ia64_pltoff,
2064 (SEC_ALLOC
2065 | SEC_LOAD
2066 | SEC_HAS_CONTENTS
2067 | SEC_IN_MEMORY
2068 | SEC_SMALL_DATA
2069 | SEC_LINKER_CREATED));
cbe79dfe 2070 if (!pltoff
fd361982 2071 || !bfd_set_section_alignment (pltoff, 4))
cbe79dfe
TG
2072 {
2073 BFD_ASSERT (0);
2074 return NULL;
2075 }
2076
2077 ia64_info->pltoff_sec = pltoff;
2078 }
2079
2080 return pltoff;
2081}
2082
2083static asection *
2084get_reloc_section (bfd *abfd,
2085 struct elfNN_ia64_link_hash_table *ia64_info,
0a1b45a2 2086 asection *sec, bool create)
cbe79dfe
TG
2087{
2088 const char *srel_name;
2089 asection *srel;
2090 bfd *dynobj;
2091
2092 srel_name = (bfd_elf_string_from_elf_section
2093 (abfd, elf_elfheader(abfd)->e_shstrndx,
2094 _bfd_elf_single_rel_hdr (sec)->sh_name));
2095 if (srel_name == NULL)
2096 return NULL;
2097
2098 dynobj = ia64_info->root.dynobj;
2099 if (!dynobj)
2100 ia64_info->root.dynobj = dynobj = abfd;
2101
3d4d4302 2102 srel = bfd_get_linker_section (dynobj, srel_name);
cbe79dfe
TG
2103 if (srel == NULL && create)
2104 {
3d4d4302
AM
2105 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2106 (SEC_ALLOC | SEC_LOAD
2107 | SEC_HAS_CONTENTS
2108 | SEC_IN_MEMORY
2109 | SEC_LINKER_CREATED
2110 | SEC_READONLY));
cbe79dfe 2111 if (srel == NULL
fd361982 2112 || !bfd_set_section_alignment (srel, LOG_SECTION_ALIGN))
cbe79dfe
TG
2113 return NULL;
2114 }
2115
2116 return srel;
2117}
2118
0a1b45a2 2119static bool
cbe79dfe 2120count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
0a1b45a2 2121 asection *srel, int type, bool reltext)
cbe79dfe
TG
2122{
2123 struct elfNN_ia64_dyn_reloc_entry *rent;
2124
2125 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2126 if (rent->srel == srel && rent->type == type)
2127 break;
2128
2129 if (!rent)
2130 {
2131 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2132 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2133 if (!rent)
0a1b45a2 2134 return false;
cbe79dfe
TG
2135
2136 rent->next = dyn_i->reloc_entries;
2137 rent->srel = srel;
2138 rent->type = type;
2139 rent->count = 0;
2140 dyn_i->reloc_entries = rent;
2141 }
23ebcd30 2142 rent->reltext = reltext;
cbe79dfe
TG
2143 rent->count++;
2144
0a1b45a2 2145 return true;
cbe79dfe
TG
2146}
2147
0a1b45a2 2148static bool
cbe79dfe
TG
2149elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2150 asection *sec,
2151 const Elf_Internal_Rela *relocs)
2152{
2153 struct elfNN_ia64_link_hash_table *ia64_info;
2154 const Elf_Internal_Rela *relend;
2155 Elf_Internal_Shdr *symtab_hdr;
2156 const Elf_Internal_Rela *rel;
2157 asection *got, *fptr, *srel, *pltoff;
2158 enum {
2159 NEED_GOT = 1,
2160 NEED_GOTX = 2,
2161 NEED_FPTR = 4,
2162 NEED_PLTOFF = 8,
2163 NEED_MIN_PLT = 16,
2164 NEED_FULL_PLT = 32,
2165 NEED_DYNREL = 64,
2166 NEED_LTOFF_FPTR = 128,
2167 NEED_TPREL = 256,
2168 NEED_DTPMOD = 512,
2169 NEED_DTPREL = 1024
2170 };
2171 int need_entry;
2172 struct elf_link_hash_entry *h;
2173 unsigned long r_symndx;
0a1b45a2 2174 bool maybe_dynamic;
cbe79dfe 2175
0e1862bb 2176 if (bfd_link_relocatable (info))
0a1b45a2 2177 return true;
cbe79dfe
TG
2178
2179 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2180 ia64_info = elfNN_ia64_hash_table (info);
2181 if (ia64_info == NULL)
0a1b45a2 2182 return false;
cbe79dfe
TG
2183
2184 got = fptr = srel = pltoff = NULL;
2185
2186 relend = relocs + sec->reloc_count;
2187
2188 /* We scan relocations first to create dynamic relocation arrays. We
2189 modified get_dyn_sym_info to allow fast insertion and support fast
2190 lookup in the next loop. */
2191 for (rel = relocs; rel < relend; ++rel)
2192 {
2193 r_symndx = ELFNN_R_SYM (rel->r_info);
2194 if (r_symndx >= symtab_hdr->sh_info)
2195 {
2196 long indx = r_symndx - symtab_hdr->sh_info;
2197 h = elf_sym_hashes (abfd)[indx];
2198 while (h->root.type == bfd_link_hash_indirect
2199 || h->root.type == bfd_link_hash_warning)
2200 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2201 }
2202 else
2203 h = NULL;
2204
2205 /* We can only get preliminary data on whether a symbol is
2206 locally or externally defined, as not all of the input files
2207 have yet been processed. Do something with what we know, as
2208 this may help reduce memory usage and processing time later. */
0e1862bb 2209 maybe_dynamic = (h && ((!bfd_link_executable (info)
cbe79dfe
TG
2210 && (!SYMBOLIC_BIND (info, h)
2211 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2212 || !h->def_regular
2213 || h->root.type == bfd_link_hash_defweak));
2214
2215 need_entry = 0;
2216 switch (ELFNN_R_TYPE (rel->r_info))
2217 {
2218 case R_IA64_TPREL64MSB:
2219 case R_IA64_TPREL64LSB:
0e1862bb 2220 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2221 need_entry = NEED_DYNREL;
2222 break;
2223
2224 case R_IA64_LTOFF_TPREL22:
2225 need_entry = NEED_TPREL;
0e1862bb 2226 if (bfd_link_pic (info))
cbe79dfe
TG
2227 info->flags |= DF_STATIC_TLS;
2228 break;
2229
2230 case R_IA64_DTPREL32MSB:
2231 case R_IA64_DTPREL32LSB:
2232 case R_IA64_DTPREL64MSB:
2233 case R_IA64_DTPREL64LSB:
0e1862bb 2234 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2235 need_entry = NEED_DYNREL;
2236 break;
2237
2238 case R_IA64_LTOFF_DTPREL22:
2239 need_entry = NEED_DTPREL;
2240 break;
2241
2242 case R_IA64_DTPMOD64MSB:
2243 case R_IA64_DTPMOD64LSB:
0e1862bb 2244 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2245 need_entry = NEED_DYNREL;
2246 break;
2247
2248 case R_IA64_LTOFF_DTPMOD22:
2249 need_entry = NEED_DTPMOD;
2250 break;
2251
2252 case R_IA64_LTOFF_FPTR22:
2253 case R_IA64_LTOFF_FPTR64I:
2254 case R_IA64_LTOFF_FPTR32MSB:
2255 case R_IA64_LTOFF_FPTR32LSB:
2256 case R_IA64_LTOFF_FPTR64MSB:
2257 case R_IA64_LTOFF_FPTR64LSB:
2258 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2259 break;
2260
2261 case R_IA64_FPTR64I:
2262 case R_IA64_FPTR32MSB:
2263 case R_IA64_FPTR32LSB:
2264 case R_IA64_FPTR64MSB:
2265 case R_IA64_FPTR64LSB:
0e1862bb 2266 if (bfd_link_pic (info) || h)
cbe79dfe
TG
2267 need_entry = NEED_FPTR | NEED_DYNREL;
2268 else
2269 need_entry = NEED_FPTR;
2270 break;
2271
2272 case R_IA64_LTOFF22:
2273 case R_IA64_LTOFF64I:
2274 need_entry = NEED_GOT;
2275 break;
2276
2277 case R_IA64_LTOFF22X:
2278 need_entry = NEED_GOTX;
2279 break;
2280
2281 case R_IA64_PLTOFF22:
2282 case R_IA64_PLTOFF64I:
2283 case R_IA64_PLTOFF64MSB:
2284 case R_IA64_PLTOFF64LSB:
2285 need_entry = NEED_PLTOFF;
2286 if (h)
2287 {
2288 if (maybe_dynamic)
2289 need_entry |= NEED_MIN_PLT;
2290 }
2291 else
2292 {
2293 (*info->callbacks->warning)
2294 (info, _("@pltoff reloc against local symbol"), 0,
2295 abfd, 0, (bfd_vma) 0);
2296 }
2297 break;
2298
2299 case R_IA64_PCREL21B:
07d6d2b8 2300 case R_IA64_PCREL60B:
cbe79dfe
TG
2301 /* Depending on where this symbol is defined, we may or may not
2302 need a full plt entry. Only skip if we know we'll not need
2303 the entry -- static or symbolic, and the symbol definition
2304 has already been seen. */
2305 if (maybe_dynamic && rel->r_addend == 0)
2306 need_entry = NEED_FULL_PLT;
2307 break;
2308
2309 case R_IA64_IMM14:
2310 case R_IA64_IMM22:
2311 case R_IA64_IMM64:
2312 case R_IA64_DIR32MSB:
2313 case R_IA64_DIR32LSB:
2314 case R_IA64_DIR64MSB:
2315 case R_IA64_DIR64LSB:
2316 /* Shared objects will always need at least a REL relocation. */
0e1862bb 2317 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2318 need_entry = NEED_DYNREL;
2319 break;
2320
2321 case R_IA64_IPLTMSB:
2322 case R_IA64_IPLTLSB:
2323 /* Shared objects will always need at least a REL relocation. */
0e1862bb 2324 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2325 need_entry = NEED_DYNREL;
2326 break;
2327
2328 case R_IA64_PCREL22:
2329 case R_IA64_PCREL64I:
2330 case R_IA64_PCREL32MSB:
2331 case R_IA64_PCREL32LSB:
2332 case R_IA64_PCREL64MSB:
2333 case R_IA64_PCREL64LSB:
2334 if (maybe_dynamic)
2335 need_entry = NEED_DYNREL;
2336 break;
2337 }
2338
2339 if (!need_entry)
2340 continue;
2341
2342 if ((need_entry & NEED_FPTR) != 0
2343 && rel->r_addend)
2344 {
2345 (*info->callbacks->warning)
2346 (info, _("non-zero addend in @fptr reloc"), 0,
2347 abfd, 0, (bfd_vma) 0);
2348 }
2349
0a1b45a2
AM
2350 if (get_dyn_sym_info (ia64_info, h, abfd, rel, true) == NULL)
2351 return false;
cbe79dfe
TG
2352 }
2353
2354 /* Now, we only do lookup without insertion, which is very fast
2355 with the modified get_dyn_sym_info. */
2356 for (rel = relocs; rel < relend; ++rel)
2357 {
2358 struct elfNN_ia64_dyn_sym_info *dyn_i;
2359 int dynrel_type = R_IA64_NONE;
2360
2361 r_symndx = ELFNN_R_SYM (rel->r_info);
2362 if (r_symndx >= symtab_hdr->sh_info)
2363 {
2364 /* We're dealing with a global symbol -- find its hash entry
2365 and mark it as being referenced. */
2366 long indx = r_symndx - symtab_hdr->sh_info;
2367 h = elf_sym_hashes (abfd)[indx];
2368 while (h->root.type == bfd_link_hash_indirect
2369 || h->root.type == bfd_link_hash_warning)
2370 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2371
81fbe831
AM
2372 /* PR15323, ref flags aren't set for references in the same
2373 object. */
cbe79dfe
TG
2374 h->ref_regular = 1;
2375 }
2376 else
2377 h = NULL;
2378
2379 /* We can only get preliminary data on whether a symbol is
2380 locally or externally defined, as not all of the input files
2381 have yet been processed. Do something with what we know, as
2382 this may help reduce memory usage and processing time later. */
0e1862bb 2383 maybe_dynamic = (h && ((!bfd_link_executable (info)
cbe79dfe
TG
2384 && (!SYMBOLIC_BIND (info, h)
2385 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2386 || !h->def_regular
2387 || h->root.type == bfd_link_hash_defweak));
2388
2389 need_entry = 0;
2390 switch (ELFNN_R_TYPE (rel->r_info))
2391 {
2392 case R_IA64_TPREL64MSB:
2393 case R_IA64_TPREL64LSB:
0e1862bb 2394 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2395 need_entry = NEED_DYNREL;
2396 dynrel_type = R_IA64_TPREL64LSB;
0e1862bb 2397 if (bfd_link_pic (info))
cbe79dfe
TG
2398 info->flags |= DF_STATIC_TLS;
2399 break;
2400
2401 case R_IA64_LTOFF_TPREL22:
2402 need_entry = NEED_TPREL;
0e1862bb 2403 if (bfd_link_pic (info))
cbe79dfe
TG
2404 info->flags |= DF_STATIC_TLS;
2405 break;
2406
2407 case R_IA64_DTPREL32MSB:
2408 case R_IA64_DTPREL32LSB:
2409 case R_IA64_DTPREL64MSB:
2410 case R_IA64_DTPREL64LSB:
0e1862bb 2411 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2412 need_entry = NEED_DYNREL;
2413 dynrel_type = R_IA64_DTPRELNNLSB;
2414 break;
2415
2416 case R_IA64_LTOFF_DTPREL22:
2417 need_entry = NEED_DTPREL;
2418 break;
2419
2420 case R_IA64_DTPMOD64MSB:
2421 case R_IA64_DTPMOD64LSB:
0e1862bb 2422 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2423 need_entry = NEED_DYNREL;
2424 dynrel_type = R_IA64_DTPMOD64LSB;
2425 break;
2426
2427 case R_IA64_LTOFF_DTPMOD22:
2428 need_entry = NEED_DTPMOD;
2429 break;
2430
2431 case R_IA64_LTOFF_FPTR22:
2432 case R_IA64_LTOFF_FPTR64I:
2433 case R_IA64_LTOFF_FPTR32MSB:
2434 case R_IA64_LTOFF_FPTR32LSB:
2435 case R_IA64_LTOFF_FPTR64MSB:
2436 case R_IA64_LTOFF_FPTR64LSB:
2437 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2438 break;
2439
2440 case R_IA64_FPTR64I:
2441 case R_IA64_FPTR32MSB:
2442 case R_IA64_FPTR32LSB:
2443 case R_IA64_FPTR64MSB:
2444 case R_IA64_FPTR64LSB:
0e1862bb 2445 if (bfd_link_pic (info) || h)
cbe79dfe
TG
2446 need_entry = NEED_FPTR | NEED_DYNREL;
2447 else
2448 need_entry = NEED_FPTR;
2449 dynrel_type = R_IA64_FPTRNNLSB;
2450 break;
2451
2452 case R_IA64_LTOFF22:
2453 case R_IA64_LTOFF64I:
2454 need_entry = NEED_GOT;
2455 break;
2456
2457 case R_IA64_LTOFF22X:
2458 need_entry = NEED_GOTX;
2459 break;
2460
2461 case R_IA64_PLTOFF22:
2462 case R_IA64_PLTOFF64I:
2463 case R_IA64_PLTOFF64MSB:
2464 case R_IA64_PLTOFF64LSB:
2465 need_entry = NEED_PLTOFF;
2466 if (h)
2467 {
2468 if (maybe_dynamic)
2469 need_entry |= NEED_MIN_PLT;
2470 }
2471 break;
2472
2473 case R_IA64_PCREL21B:
07d6d2b8 2474 case R_IA64_PCREL60B:
cbe79dfe
TG
2475 /* Depending on where this symbol is defined, we may or may not
2476 need a full plt entry. Only skip if we know we'll not need
2477 the entry -- static or symbolic, and the symbol definition
2478 has already been seen. */
2479 if (maybe_dynamic && rel->r_addend == 0)
2480 need_entry = NEED_FULL_PLT;
2481 break;
2482
2483 case R_IA64_IMM14:
2484 case R_IA64_IMM22:
2485 case R_IA64_IMM64:
2486 case R_IA64_DIR32MSB:
2487 case R_IA64_DIR32LSB:
2488 case R_IA64_DIR64MSB:
2489 case R_IA64_DIR64LSB:
2490 /* Shared objects will always need at least a REL relocation. */
0e1862bb 2491 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2492 need_entry = NEED_DYNREL;
2493 dynrel_type = R_IA64_DIRNNLSB;
2494 break;
2495
2496 case R_IA64_IPLTMSB:
2497 case R_IA64_IPLTLSB:
2498 /* Shared objects will always need at least a REL relocation. */
0e1862bb 2499 if (bfd_link_pic (info) || maybe_dynamic)
cbe79dfe
TG
2500 need_entry = NEED_DYNREL;
2501 dynrel_type = R_IA64_IPLTLSB;
2502 break;
2503
2504 case R_IA64_PCREL22:
2505 case R_IA64_PCREL64I:
2506 case R_IA64_PCREL32MSB:
2507 case R_IA64_PCREL32LSB:
2508 case R_IA64_PCREL64MSB:
2509 case R_IA64_PCREL64LSB:
2510 if (maybe_dynamic)
2511 need_entry = NEED_DYNREL;
2512 dynrel_type = R_IA64_PCRELNNLSB;
2513 break;
2514 }
2515
2516 if (!need_entry)
2517 continue;
2518
0a1b45a2 2519 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, false);
cbe79dfe
TG
2520
2521 /* Record whether or not this is a local symbol. */
2522 dyn_i->h = h;
2523
2524 /* Create what's needed. */
2525 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2526 | NEED_DTPMOD | NEED_DTPREL))
2527 {
2528 if (!got)
2529 {
2530 got = get_got (abfd, info, ia64_info);
2531 if (!got)
0a1b45a2 2532 return false;
cbe79dfe
TG
2533 }
2534 if (need_entry & NEED_GOT)
2535 dyn_i->want_got = 1;
2536 if (need_entry & NEED_GOTX)
2537 dyn_i->want_gotx = 1;
2538 if (need_entry & NEED_TPREL)
2539 dyn_i->want_tprel = 1;
2540 if (need_entry & NEED_DTPMOD)
2541 dyn_i->want_dtpmod = 1;
2542 if (need_entry & NEED_DTPREL)
2543 dyn_i->want_dtprel = 1;
2544 }
2545 if (need_entry & NEED_FPTR)
2546 {
2547 if (!fptr)
2548 {
2549 fptr = get_fptr (abfd, info, ia64_info);
2550 if (!fptr)
0a1b45a2 2551 return false;
cbe79dfe
TG
2552 }
2553
2554 /* FPTRs for shared libraries are allocated by the dynamic
2555 linker. Make sure this local symbol will appear in the
2556 dynamic symbol table. */
0e1862bb 2557 if (!h && bfd_link_pic (info))
cbe79dfe
TG
2558 {
2559 if (! (bfd_elf_link_record_local_dynamic_symbol
2560 (info, abfd, (long) r_symndx)))
0a1b45a2 2561 return false;
cbe79dfe
TG
2562 }
2563
2564 dyn_i->want_fptr = 1;
2565 }
2566 if (need_entry & NEED_LTOFF_FPTR)
2567 dyn_i->want_ltoff_fptr = 1;
2568 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2569 {
07d6d2b8 2570 if (!ia64_info->root.dynobj)
cbe79dfe
TG
2571 ia64_info->root.dynobj = abfd;
2572 h->needs_plt = 1;
2573 dyn_i->want_plt = 1;
2574 }
2575 if (need_entry & NEED_FULL_PLT)
2576 dyn_i->want_plt2 = 1;
2577 if (need_entry & NEED_PLTOFF)
2578 {
2579 /* This is needed here, in case @pltoff is used in a non-shared
2580 link. */
2581 if (!pltoff)
2582 {
2583 pltoff = get_pltoff (abfd, info, ia64_info);
2584 if (!pltoff)
0a1b45a2 2585 return false;
cbe79dfe
TG
2586 }
2587
2588 dyn_i->want_pltoff = 1;
2589 }
2590 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2591 {
2592 if (!srel)
2593 {
0a1b45a2 2594 srel = get_reloc_section (abfd, ia64_info, sec, true);
cbe79dfe 2595 if (!srel)
0a1b45a2 2596 return false;
cbe79dfe
TG
2597 }
2598 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2599 (sec->flags & SEC_READONLY) != 0))
0a1b45a2 2600 return false;
cbe79dfe
TG
2601 }
2602 }
2603
0a1b45a2 2604 return true;
cbe79dfe
TG
2605}
2606
2607/* For cleanliness, and potentially faster dynamic loading, allocate
2608 external GOT entries first. */
2609
0a1b45a2 2610static bool
cbe79dfe
TG
2611allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2612 void * data)
2613{
2614 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2615
2616 if ((dyn_i->want_got || dyn_i->want_gotx)
2617 && ! dyn_i->want_fptr
2618 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2619 {
2620 dyn_i->got_offset = x->ofs;
2621 x->ofs += 8;
2622 }
2623 if (dyn_i->want_tprel)
2624 {
2625 dyn_i->tprel_offset = x->ofs;
2626 x->ofs += 8;
2627 }
2628 if (dyn_i->want_dtpmod)
2629 {
2630 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2631 {
2632 dyn_i->dtpmod_offset = x->ofs;
2633 x->ofs += 8;
2634 }
2635 else
2636 {
2637 struct elfNN_ia64_link_hash_table *ia64_info;
2638
2639 ia64_info = elfNN_ia64_hash_table (x->info);
2640 if (ia64_info == NULL)
0a1b45a2 2641 return false;
cbe79dfe
TG
2642
2643 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2644 {
2645 ia64_info->self_dtpmod_offset = x->ofs;
2646 x->ofs += 8;
2647 }
2648 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2649 }
2650 }
2651 if (dyn_i->want_dtprel)
2652 {
2653 dyn_i->dtprel_offset = x->ofs;
2654 x->ofs += 8;
2655 }
0a1b45a2 2656 return true;
cbe79dfe
TG
2657}
2658
2659/* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2660
0a1b45a2 2661static bool
cbe79dfe
TG
2662allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2663 void * data)
2664{
2665 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2666
2667 if (dyn_i->want_got
2668 && dyn_i->want_fptr
2669 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2670 {
2671 dyn_i->got_offset = x->ofs;
2672 x->ofs += 8;
2673 }
0a1b45a2 2674 return true;
cbe79dfe
TG
2675}
2676
2677/* Lastly, allocate all the GOT entries for local data. */
2678
0a1b45a2 2679static bool
cbe79dfe 2680allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2c3fc389 2681 void * data)
cbe79dfe
TG
2682{
2683 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2684
2685 if ((dyn_i->want_got || dyn_i->want_gotx)
2686 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2687 {
2688 dyn_i->got_offset = x->ofs;
2689 x->ofs += 8;
2690 }
0a1b45a2 2691 return true;
cbe79dfe
TG
2692}
2693
2694/* Search for the index of a global symbol in it's defining object file. */
2695
2696static long
2697global_sym_index (struct elf_link_hash_entry *h)
2698{
2699 struct elf_link_hash_entry **p;
2700 bfd *obj;
2701
2702 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2703 || h->root.type == bfd_link_hash_defweak);
2704
2705 obj = h->root.u.def.section->owner;
2706 for (p = elf_sym_hashes (obj); *p != h; ++p)
2707 continue;
2708
2709 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2710}
2711
2712/* Allocate function descriptors. We can do these for every function
2713 in a main executable that is not exported. */
2714
0a1b45a2 2715static bool
2c3fc389 2716allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
cbe79dfe
TG
2717{
2718 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2719
2720 if (dyn_i->want_fptr)
2721 {
2722 struct elf_link_hash_entry *h = dyn_i->h;
2723
2724 if (h)
2725 while (h->root.type == bfd_link_hash_indirect
2726 || h->root.type == bfd_link_hash_warning)
2727 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2728
0e1862bb 2729 if (!bfd_link_executable (x->info)
cbe79dfe 2730 && (!h
769c253f 2731 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
cbe79dfe
TG
2732 || (h->root.type != bfd_link_hash_undefweak
2733 && h->root.type != bfd_link_hash_undefined)))
2734 {
2735 if (h && h->dynindx == -1)
2736 {
2737 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2738 || (h->root.type == bfd_link_hash_defweak));
2739
2740 if (!bfd_elf_link_record_local_dynamic_symbol
2741 (x->info, h->root.u.def.section->owner,
2742 global_sym_index (h)))
0a1b45a2 2743 return false;
cbe79dfe
TG
2744 }
2745
2746 dyn_i->want_fptr = 0;
2747 }
2748 else if (h == NULL || h->dynindx == -1)
2749 {
2750 dyn_i->fptr_offset = x->ofs;
2751 x->ofs += 16;
2752 }
2753 else
2754 dyn_i->want_fptr = 0;
2755 }
0a1b45a2 2756 return true;
cbe79dfe
TG
2757}
2758
2759/* Allocate all the minimal PLT entries. */
2760
0a1b45a2 2761static bool
cbe79dfe 2762allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2c3fc389 2763 void * data)
cbe79dfe
TG
2764{
2765 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2766
2767 if (dyn_i->want_plt)
2768 {
2769 struct elf_link_hash_entry *h = dyn_i->h;
2770
2771 if (h)
2772 while (h->root.type == bfd_link_hash_indirect
2773 || h->root.type == bfd_link_hash_warning)
2774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2775
2776 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2777 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2778 {
2779 bfd_size_type offset = x->ofs;
2780 if (offset == 0)
2781 offset = PLT_HEADER_SIZE;
2782 dyn_i->plt_offset = offset;
2783 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2784
2785 dyn_i->want_pltoff = 1;
2786 }
2787 else
2788 {
2789 dyn_i->want_plt = 0;
2790 dyn_i->want_plt2 = 0;
2791 }
2792 }
0a1b45a2 2793 return true;
cbe79dfe
TG
2794}
2795
2796/* Allocate all the full PLT entries. */
2797
0a1b45a2 2798static bool
cbe79dfe 2799allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2c3fc389 2800 void * data)
cbe79dfe
TG
2801{
2802 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2803
2804 if (dyn_i->want_plt2)
2805 {
2806 struct elf_link_hash_entry *h = dyn_i->h;
2807 bfd_size_type ofs = x->ofs;
2808
2809 dyn_i->plt2_offset = ofs;
2810 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2811
2812 while (h->root.type == bfd_link_hash_indirect
2813 || h->root.type == bfd_link_hash_warning)
2814 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2815 dyn_i->h->plt.offset = ofs;
2816 }
0a1b45a2 2817 return true;
cbe79dfe
TG
2818}
2819
2820/* Allocate all the PLTOFF entries requested by relocations and
2821 plt entries. We can't share space with allocated FPTR entries,
2822 because the latter are not necessarily addressable by the GP.
2823 ??? Relaxation might be able to determine that they are. */
2824
0a1b45a2 2825static bool
cbe79dfe 2826allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2c3fc389 2827 void * data)
cbe79dfe
TG
2828{
2829 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2830
2831 if (dyn_i->want_pltoff)
2832 {
2833 dyn_i->pltoff_offset = x->ofs;
2834 x->ofs += 16;
2835 }
0a1b45a2 2836 return true;
cbe79dfe
TG
2837}
2838
2839/* Allocate dynamic relocations for those symbols that turned out
2840 to be dynamic. */
2841
0a1b45a2 2842static bool
cbe79dfe 2843allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2c3fc389 2844 void * data)
cbe79dfe
TG
2845{
2846 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2847 struct elfNN_ia64_link_hash_table *ia64_info;
2848 struct elfNN_ia64_dyn_reloc_entry *rent;
0a1b45a2 2849 bool dynamic_symbol, shared, resolved_zero;
cbe79dfe
TG
2850
2851 ia64_info = elfNN_ia64_hash_table (x->info);
2852 if (ia64_info == NULL)
0a1b45a2 2853 return false;
cbe79dfe
TG
2854
2855 /* Note that this can't be used in relation to FPTR relocs below. */
2856 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2857
0e1862bb 2858 shared = bfd_link_pic (x->info);
cbe79dfe 2859 resolved_zero = (dyn_i->h
769c253f
AM
2860 && ELF_ST_VISIBILITY (dyn_i->h->other)
2861 && dyn_i->h->root.type == bfd_link_hash_undefweak);
cbe79dfe
TG
2862
2863 /* Take care of the GOT and PLT relocations. */
2864
2865 if ((!resolved_zero
2866 && (dynamic_symbol || shared)
2867 && (dyn_i->want_got || dyn_i->want_gotx))
2868 || (dyn_i->want_ltoff_fptr
2869 && dyn_i->h
2870 && dyn_i->h->dynindx != -1))
2871 {
2872 if (!dyn_i->want_ltoff_fptr
0e1862bb 2873 || !bfd_link_pie (x->info)
cbe79dfe
TG
2874 || dyn_i->h == NULL
2875 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2876 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2877 }
2878 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2879 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2880 if (dynamic_symbol && dyn_i->want_dtpmod)
2881 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2882 if (dynamic_symbol && dyn_i->want_dtprel)
2883 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2884
2885 if (x->only_got)
0a1b45a2 2886 return true;
cbe79dfe
TG
2887
2888 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2889 {
2890 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2891 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2892 }
2893
2894 if (!resolved_zero && dyn_i->want_pltoff)
2895 {
2896 bfd_size_type t = 0;
2897
2898 /* Dynamic symbols get one IPLT relocation. Local symbols in
2899 shared libraries get two REL relocations. Local symbols in
2900 main applications get nothing. */
2901 if (dynamic_symbol)
2902 t = sizeof (ElfNN_External_Rela);
2903 else if (shared)
2904 t = 2 * sizeof (ElfNN_External_Rela);
2905
2906 ia64_info->rel_pltoff_sec->size += t;
2907 }
2908
2909 /* Take care of the normal data relocations. */
2910
2911 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2912 {
2913 int count = rent->count;
2914
2915 switch (rent->type)
2916 {
2917 case R_IA64_FPTR32LSB:
2918 case R_IA64_FPTR64LSB:
2919 /* Allocate one iff !want_fptr and not PIE, which by this point
2920 will be true only if we're actually allocating one statically
2921 in the main executable. Position independent executables
2922 need a relative reloc. */
0e1862bb 2923 if (dyn_i->want_fptr && !bfd_link_pie (x->info))
cbe79dfe
TG
2924 continue;
2925 break;
2926 case R_IA64_PCREL32LSB:
2927 case R_IA64_PCREL64LSB:
2928 if (!dynamic_symbol)
2929 continue;
2930 break;
2931 case R_IA64_DIR32LSB:
2932 case R_IA64_DIR64LSB:
2933 if (!dynamic_symbol && !shared)
2934 continue;
2935 break;
2936 case R_IA64_IPLTLSB:
2937 if (!dynamic_symbol && !shared)
2938 continue;
2939 /* Use two REL relocations for IPLT relocations
2940 against local symbols. */
2941 if (!dynamic_symbol)
2942 count *= 2;
2943 break;
2944 case R_IA64_DTPREL32LSB:
2945 case R_IA64_TPREL64LSB:
2946 case R_IA64_DTPREL64LSB:
2947 case R_IA64_DTPMOD64LSB:
2948 break;
2949 default:
2950 abort ();
2951 }
2952 if (rent->reltext)
447f6d86 2953 x->info->flags |= DF_TEXTREL;
cbe79dfe
TG
2954 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2955 }
2956
0a1b45a2 2957 return true;
cbe79dfe
TG
2958}
2959
0a1b45a2 2960static bool
cbe79dfe
TG
2961elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2962 struct elf_link_hash_entry *h)
2963{
2964 /* ??? Undefined symbols with PLT entries should be re-defined
2965 to be the PLT entry. */
2966
2967 /* If this is a weak symbol, and there is a real definition, the
2968 processor independent code will have arranged for us to see the
2969 real definition first, and we can just use the same value. */
60d67dc8 2970 if (h->is_weakalias)
cbe79dfe 2971 {
60d67dc8
AM
2972 struct elf_link_hash_entry *def = weakdef (h);
2973 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2974 h->root.u.def.section = def->root.u.def.section;
2975 h->root.u.def.value = def->root.u.def.value;
0a1b45a2 2976 return true;
cbe79dfe
TG
2977 }
2978
2979 /* If this is a reference to a symbol defined by a dynamic object which
2980 is not a function, we might allocate the symbol in our .dynbss section
2981 and allocate a COPY dynamic relocation.
2982
2983 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2984 of hackery. */
2985
0a1b45a2 2986 return true;
cbe79dfe
TG
2987}
2988
0a1b45a2 2989static bool
af969b14
AM
2990elfNN_ia64_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2991 struct bfd_link_info *info)
cbe79dfe
TG
2992{
2993 struct elfNN_ia64_allocate_data data;
2994 struct elfNN_ia64_link_hash_table *ia64_info;
2995 asection *sec;
2996 bfd *dynobj;
cbe79dfe 2997
cbe79dfe
TG
2998 ia64_info = elfNN_ia64_hash_table (info);
2999 if (ia64_info == NULL)
0a1b45a2 3000 return false;
ce558b89 3001 dynobj = ia64_info->root.dynobj;
af969b14
AM
3002 if (dynobj == NULL)
3003 return true;
cbe79dfe 3004 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
cbe79dfe
TG
3005 data.info = info;
3006
3007 /* Set the contents of the .interp section to the interpreter. */
3008 if (ia64_info->root.dynamic_sections_created
9b8b325a 3009 && bfd_link_executable (info) && !info->nointerp)
cbe79dfe 3010 {
3d4d4302 3011 sec = bfd_get_linker_section (dynobj, ".interp");
cbe79dfe
TG
3012 BFD_ASSERT (sec != NULL);
3013 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3014 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3015 }
3016
3017 /* Allocate the GOT entries. */
3018
3019 if (ia64_info->root.sgot)
3020 {
3021 data.ofs = 0;
3022 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3023 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3024 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3025 ia64_info->root.sgot->size = data.ofs;
3026 }
3027
3028 /* Allocate the FPTR entries. */
3029
3030 if (ia64_info->fptr_sec)
3031 {
3032 data.ofs = 0;
3033 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3034 ia64_info->fptr_sec->size = data.ofs;
3035 }
3036
3037 /* Now that we've seen all of the input files, we can decide which
3038 symbols need plt entries. Allocate the minimal PLT entries first.
3039 We do this even though dynamic_sections_created may be FALSE, because
3040 this has the side-effect of clearing want_plt and want_plt2. */
3041
3042 data.ofs = 0;
3043 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3044
3045 ia64_info->minplt_entries = 0;
3046 if (data.ofs)
3047 {
3048 ia64_info->minplt_entries
3049 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3050 }
3051
3052 /* Align the pointer for the plt2 entries. */
3053 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3054
3055 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3056 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3057 {
3058 /* FIXME: we always reserve the memory for dynamic linker even if
3059 there are no PLT entries since dynamic linker may assume the
3060 reserved memory always exists. */
3061
3062 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3063
3064 ia64_info->root.splt->size = data.ofs;
3065
3066 /* If we've got a .plt, we need some extra memory for the dynamic
3067 linker. We stuff these in .got.plt. */
ce558b89 3068 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
cbe79dfe
TG
3069 }
3070
3071 /* Allocate the PLTOFF entries. */
3072
3073 if (ia64_info->pltoff_sec)
3074 {
3075 data.ofs = 0;
3076 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3077 ia64_info->pltoff_sec->size = data.ofs;
3078 }
3079
3080 if (ia64_info->root.dynamic_sections_created)
3081 {
3082 /* Allocate space for the dynamic relocations that turned out to be
3083 required. */
3084
0e1862bb 3085 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
cbe79dfe 3086 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
0a1b45a2 3087 data.only_got = false;
cbe79dfe
TG
3088 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3089 }
3090
3091 /* We have now determined the sizes of the various dynamic sections.
3092 Allocate memory for them. */
3093 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3094 {
0a1b45a2 3095 bool strip;
cbe79dfe
TG
3096
3097 if (!(sec->flags & SEC_LINKER_CREATED))
3098 continue;
3099
3100 /* If we don't need this section, strip it from the output file.
3101 There were several sections primarily related to dynamic
3102 linking that must be create before the linker maps input
3103 sections to output sections. The linker does that before
3104 bfd_elf_size_dynamic_sections is called, and it is that
3105 function which decides whether anything needs to go into
3106 these sections. */
3107
3108 strip = (sec->size == 0);
3109
3110 if (sec == ia64_info->root.sgot)
0a1b45a2 3111 strip = false;
cbe79dfe
TG
3112 else if (sec == ia64_info->root.srelgot)
3113 {
3114 if (strip)
3115 ia64_info->root.srelgot = NULL;
3116 else
3117 /* We use the reloc_count field as a counter if we need to
3118 copy relocs into the output file. */
3119 sec->reloc_count = 0;
3120 }
3121 else if (sec == ia64_info->fptr_sec)
3122 {
3123 if (strip)
3124 ia64_info->fptr_sec = NULL;
3125 }
3126 else if (sec == ia64_info->rel_fptr_sec)
3127 {
3128 if (strip)
3129 ia64_info->rel_fptr_sec = NULL;
3130 else
3131 /* We use the reloc_count field as a counter if we need to
3132 copy relocs into the output file. */
3133 sec->reloc_count = 0;
3134 }
3135 else if (sec == ia64_info->root.splt)
3136 {
3137 if (strip)
3138 ia64_info->root.splt = NULL;
3139 }
3140 else if (sec == ia64_info->pltoff_sec)
3141 {
3142 if (strip)
3143 ia64_info->pltoff_sec = NULL;
3144 }
3145 else if (sec == ia64_info->rel_pltoff_sec)
3146 {
3147 if (strip)
3148 ia64_info->rel_pltoff_sec = NULL;
3149 else
3150 {
0a1b45a2 3151 ia64_info->root.dt_jmprel_required = true;
cbe79dfe
TG
3152 /* We use the reloc_count field as a counter if we need to
3153 copy relocs into the output file. */
3154 sec->reloc_count = 0;
3155 }
3156 }
3157 else
3158 {
3159 const char *name;
3160
3161 /* It's OK to base decisions on the section name, because none
3162 of the dynobj section names depend upon the input files. */
fd361982 3163 name = bfd_section_name (sec);
cbe79dfe
TG
3164
3165 if (strcmp (name, ".got.plt") == 0)
0a1b45a2 3166 strip = false;
08dedd66 3167 else if (startswith (name, ".rel"))
cbe79dfe
TG
3168 {
3169 if (!strip)
3170 {
3171 /* We use the reloc_count field as a counter if we need to
3172 copy relocs into the output file. */
3173 sec->reloc_count = 0;
3174 }
3175 }
3176 else
3177 continue;
3178 }
3179
3180 if (strip)
3181 sec->flags |= SEC_EXCLUDE;
3182 else
3183 {
3184 /* Allocate memory for the section contents. */
3185 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3186 if (sec->contents == NULL && sec->size != 0)
0a1b45a2 3187 return false;
cbe79dfe
TG
3188 }
3189 }
3190
ce558b89 3191 if (ia64_info->root.dynamic_sections_created)
cbe79dfe
TG
3192 {
3193 /* Add some entries to the .dynamic section. We fill in the values
3194 later (in finish_dynamic_sections) but we must add the entries now
3195 so that we get the correct size for the .dynamic section. */
3196
cbe79dfe
TG
3197#define add_dynamic_entry(TAG, VAL) \
3198 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3199
0a1b45a2
AM
3200 if (!_bfd_elf_add_dynamic_tags (output_bfd, info, true))
3201 return false;
cbe79dfe 3202
3084d7a2 3203 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
0a1b45a2 3204 return false;
cbe79dfe
TG
3205 }
3206
3207 /* ??? Perhaps force __gp local. */
3208
0a1b45a2 3209 return true;
cbe79dfe
TG
3210}
3211
3212static void
3213elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3214 asection *sec, asection *srel,
3215 bfd_vma offset, unsigned int type,
3216 long dynindx, bfd_vma addend)
3217{
3218 Elf_Internal_Rela outrel;
3219 bfd_byte *loc;
3220
3221 BFD_ASSERT (dynindx != -1);
3222 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3223 outrel.r_addend = addend;
3224 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3225 if (outrel.r_offset >= (bfd_vma) -2)
3226 {
3227 /* Run for the hills. We shouldn't be outputting a relocation
3228 for this. So do what everyone else does and output a no-op. */
3229 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3230 outrel.r_addend = 0;
3231 outrel.r_offset = 0;
3232 }
3233 else
3234 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3235
3236 loc = srel->contents;
3237 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3238 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3239 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3240}
3241
3242/* Store an entry for target address TARGET_ADDR in the linkage table
3243 and return the gp-relative address of the linkage table entry. */
3244
3245static bfd_vma
3246set_got_entry (bfd *abfd, struct bfd_link_info *info,
3247 struct elfNN_ia64_dyn_sym_info *dyn_i,
3248 long dynindx, bfd_vma addend, bfd_vma value,
3249 unsigned int dyn_r_type)
3250{
3251 struct elfNN_ia64_link_hash_table *ia64_info;
3252 asection *got_sec;
0a1b45a2 3253 bool done;
cbe79dfe
TG
3254 bfd_vma got_offset;
3255
3256 ia64_info = elfNN_ia64_hash_table (info);
3257 if (ia64_info == NULL)
3258 return 0;
3259
3260 got_sec = ia64_info->root.sgot;
3261
3262 switch (dyn_r_type)
3263 {
3264 case R_IA64_TPREL64LSB:
3265 done = dyn_i->tprel_done;
0a1b45a2 3266 dyn_i->tprel_done = true;
cbe79dfe
TG
3267 got_offset = dyn_i->tprel_offset;
3268 break;
3269 case R_IA64_DTPMOD64LSB:
3270 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3271 {
3272 done = dyn_i->dtpmod_done;
0a1b45a2 3273 dyn_i->dtpmod_done = true;
cbe79dfe
TG
3274 }
3275 else
3276 {
3277 done = ia64_info->self_dtpmod_done;
0a1b45a2 3278 ia64_info->self_dtpmod_done = true;
cbe79dfe
TG
3279 dynindx = 0;
3280 }
3281 got_offset = dyn_i->dtpmod_offset;
3282 break;
3283 case R_IA64_DTPREL32LSB:
3284 case R_IA64_DTPREL64LSB:
3285 done = dyn_i->dtprel_done;
0a1b45a2 3286 dyn_i->dtprel_done = true;
cbe79dfe
TG
3287 got_offset = dyn_i->dtprel_offset;
3288 break;
3289 default:
3290 done = dyn_i->got_done;
0a1b45a2 3291 dyn_i->got_done = true;
cbe79dfe
TG
3292 got_offset = dyn_i->got_offset;
3293 break;
3294 }
3295
3296 BFD_ASSERT ((got_offset & 7) == 0);
3297
3298 if (! done)
3299 {
3300 /* Store the target address in the linkage table entry. */
3301 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3302
3303 /* Install a dynamic relocation if needed. */
0e1862bb 3304 if (((bfd_link_pic (info)
cbe79dfe 3305 && (!dyn_i->h
769c253f 3306 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
cbe79dfe
TG
3307 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3308 && dyn_r_type != R_IA64_DTPREL32LSB
3309 && dyn_r_type != R_IA64_DTPREL64LSB)
07d6d2b8 3310 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
cbe79dfe
TG
3311 || (dynindx != -1
3312 && (dyn_r_type == R_IA64_FPTR32LSB
3313 || dyn_r_type == R_IA64_FPTR64LSB)))
3314 && (!dyn_i->want_ltoff_fptr
0e1862bb 3315 || !bfd_link_pie (info)
cbe79dfe
TG
3316 || !dyn_i->h
3317 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3318 {
3319 if (dynindx == -1
3320 && dyn_r_type != R_IA64_TPREL64LSB
3321 && dyn_r_type != R_IA64_DTPMOD64LSB
3322 && dyn_r_type != R_IA64_DTPREL32LSB
3323 && dyn_r_type != R_IA64_DTPREL64LSB)
3324 {
3325 dyn_r_type = R_IA64_RELNNLSB;
3326 dynindx = 0;
3327 addend = value;
3328 }
3329
3330 if (bfd_big_endian (abfd))
3331 {
3332 switch (dyn_r_type)
3333 {
3334 case R_IA64_REL32LSB:
3335 dyn_r_type = R_IA64_REL32MSB;
3336 break;
3337 case R_IA64_DIR32LSB:
3338 dyn_r_type = R_IA64_DIR32MSB;
3339 break;
3340 case R_IA64_FPTR32LSB:
3341 dyn_r_type = R_IA64_FPTR32MSB;
3342 break;
3343 case R_IA64_DTPREL32LSB:
3344 dyn_r_type = R_IA64_DTPREL32MSB;
3345 break;
3346 case R_IA64_REL64LSB:
3347 dyn_r_type = R_IA64_REL64MSB;
3348 break;
3349 case R_IA64_DIR64LSB:
3350 dyn_r_type = R_IA64_DIR64MSB;
3351 break;
3352 case R_IA64_FPTR64LSB:
3353 dyn_r_type = R_IA64_FPTR64MSB;
3354 break;
3355 case R_IA64_TPREL64LSB:
3356 dyn_r_type = R_IA64_TPREL64MSB;
3357 break;
3358 case R_IA64_DTPMOD64LSB:
3359 dyn_r_type = R_IA64_DTPMOD64MSB;
3360 break;
3361 case R_IA64_DTPREL64LSB:
3362 dyn_r_type = R_IA64_DTPREL64MSB;
3363 break;
3364 default:
0a1b45a2 3365 BFD_ASSERT (false);
cbe79dfe
TG
3366 break;
3367 }
3368 }
3369
3370 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3371 ia64_info->root.srelgot,
3372 got_offset, dyn_r_type,
3373 dynindx, addend);
3374 }
3375 }
3376
3377 /* Return the address of the linkage table entry. */
3378 value = (got_sec->output_section->vma
3379 + got_sec->output_offset
3380 + got_offset);
3381
3382 return value;
3383}
3384
3385/* Fill in a function descriptor consisting of the function's code
3386 address and its global pointer. Return the descriptor's address. */
3387
3388static bfd_vma
3389set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3390 struct elfNN_ia64_dyn_sym_info *dyn_i,
3391 bfd_vma value)
3392{
3393 struct elfNN_ia64_link_hash_table *ia64_info;
3394 asection *fptr_sec;
3395
3396 ia64_info = elfNN_ia64_hash_table (info);
3397 if (ia64_info == NULL)
3398 return 0;
3399
3400 fptr_sec = ia64_info->fptr_sec;
3401
3402 if (!dyn_i->fptr_done)
3403 {
3404 dyn_i->fptr_done = 1;
3405
3406 /* Fill in the function descriptor. */
3407 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3408 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3409 fptr_sec->contents + dyn_i->fptr_offset + 8);
3410 if (ia64_info->rel_fptr_sec)
3411 {
3412 Elf_Internal_Rela outrel;
3413 bfd_byte *loc;
3414
3415 if (bfd_little_endian (abfd))
3416 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3417 else
3418 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3419 outrel.r_addend = value;
3420 outrel.r_offset = (fptr_sec->output_section->vma
3421 + fptr_sec->output_offset
3422 + dyn_i->fptr_offset);
3423 loc = ia64_info->rel_fptr_sec->contents;
3424 loc += ia64_info->rel_fptr_sec->reloc_count++
3425 * sizeof (ElfNN_External_Rela);
3426 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3427 }
3428 }
3429
3430 /* Return the descriptor's address. */
3431 value = (fptr_sec->output_section->vma
3432 + fptr_sec->output_offset
3433 + dyn_i->fptr_offset);
3434
3435 return value;
3436}
3437
3438/* Fill in a PLTOFF entry consisting of the function's code address
3439 and its global pointer. Return the descriptor's address. */
3440
3441static bfd_vma
3442set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3443 struct elfNN_ia64_dyn_sym_info *dyn_i,
0a1b45a2 3444 bfd_vma value, bool is_plt)
cbe79dfe
TG
3445{
3446 struct elfNN_ia64_link_hash_table *ia64_info;
3447 asection *pltoff_sec;
3448
3449 ia64_info = elfNN_ia64_hash_table (info);
3450 if (ia64_info == NULL)
3451 return 0;
3452
3453 pltoff_sec = ia64_info->pltoff_sec;
3454
3455 /* Don't do anything if this symbol uses a real PLT entry. In
3456 that case, we'll fill this in during finish_dynamic_symbol. */
3457 if ((! dyn_i->want_plt || is_plt)
3458 && !dyn_i->pltoff_done)
3459 {
3460 bfd_vma gp = _bfd_get_gp_value (abfd);
3461
3462 /* Fill in the function descriptor. */
3463 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3464 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3465
3466 /* Install dynamic relocations if needed. */
3467 if (!is_plt
0e1862bb 3468 && bfd_link_pic (info)
cbe79dfe 3469 && (!dyn_i->h
769c253f 3470 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
cbe79dfe
TG
3471 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3472 {
3473 unsigned int dyn_r_type;
3474
3475 if (bfd_big_endian (abfd))
3476 dyn_r_type = R_IA64_RELNNMSB;
3477 else
3478 dyn_r_type = R_IA64_RELNNLSB;
3479
3480 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3481 ia64_info->rel_pltoff_sec,
3482 dyn_i->pltoff_offset,
3483 dyn_r_type, 0, value);
3484 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3485 ia64_info->rel_pltoff_sec,
3486 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3487 dyn_r_type, 0, gp);
3488 }
3489
3490 dyn_i->pltoff_done = 1;
3491 }
3492
3493 /* Return the descriptor's address. */
3494 value = (pltoff_sec->output_section->vma
3495 + pltoff_sec->output_offset
3496 + dyn_i->pltoff_offset);
3497
3498 return value;
3499}
3500
3501/* Return the base VMA address which should be subtracted from real addresses
3502 when resolving @tprel() relocation.
3503 Main program TLS (whose template starts at PT_TLS p_vaddr)
3504 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3505
3506static bfd_vma
3507elfNN_ia64_tprel_base (struct bfd_link_info *info)
3508{
3509 asection *tls_sec = elf_hash_table (info)->tls_sec;
3510 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3511 tls_sec->alignment_power);
3512}
3513
3514/* Return the base VMA address which should be subtracted from real addresses
3515 when resolving @dtprel() relocation.
3516 This is PT_TLS segment p_vaddr. */
3517
3518static bfd_vma
3519elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3520{
3521 return elf_hash_table (info)->tls_sec->vma;
3522}
3523
3524/* Called through qsort to sort the .IA_64.unwind section during a
3525 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3526 to the output bfd so we can do proper endianness frobbing. */
3527
3528static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3529
3530static int
2c3fc389 3531elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
cbe79dfe
TG
3532{
3533 bfd_vma av, bv;
3534
3535 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3536 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3537
3538 return (av < bv ? -1 : av > bv ? 1 : 0);
3539}
3540
3541/* Make sure we've got ourselves a nice fat __gp value. */
0a1b45a2
AM
3542static bool
3543elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bool final)
cbe79dfe
TG
3544{
3545 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3546 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3547 struct elf_link_hash_entry *gp;
3548 bfd_vma gp_val;
3549 asection *os;
3550 struct elfNN_ia64_link_hash_table *ia64_info;
3551
3552 ia64_info = elfNN_ia64_hash_table (info);
3553 if (ia64_info == NULL)
0a1b45a2 3554 return false;
cbe79dfe
TG
3555
3556 /* Find the min and max vma of all sections marked short. Also collect
3557 min and max vma of any type, for use in selecting a nice gp. */
3558 for (os = abfd->sections; os ; os = os->next)
3559 {
3560 bfd_vma lo, hi;
3561
3562 if ((os->flags & SEC_ALLOC) == 0)
3563 continue;
3564
3565 lo = os->vma;
3566 /* When this function is called from elfNN_ia64_final_link
3567 the correct value to use is os->size. When called from
3568 elfNN_ia64_relax_section we are in the middle of section
3569 sizing; some sections will already have os->size set, others
3570 will have os->size zero and os->rawsize the previous size. */
3571 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3572 if (hi < lo)
3573 hi = (bfd_vma) -1;
3574
3575 if (min_vma > lo)
3576 min_vma = lo;
3577 if (max_vma < hi)
3578 max_vma = hi;
3579 if (os->flags & SEC_SMALL_DATA)
3580 {
3581 if (min_short_vma > lo)
3582 min_short_vma = lo;
3583 if (max_short_vma < hi)
3584 max_short_vma = hi;
3585 }
3586 }
3587
3588 if (ia64_info->min_short_sec)
3589 {
d17fe7b7 3590 if (min_short_vma
cbe79dfe
TG
3591 > (ia64_info->min_short_sec->vma
3592 + ia64_info->min_short_offset))
3593 min_short_vma = (ia64_info->min_short_sec->vma
3594 + ia64_info->min_short_offset);
3595 if (max_short_vma
3596 < (ia64_info->max_short_sec->vma
3597 + ia64_info->max_short_offset))
3598 max_short_vma = (ia64_info->max_short_sec->vma
3599 + ia64_info->max_short_offset);
3600 }
3601
3602 /* See if the user wants to force a value. */
0a1b45a2
AM
3603 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", false,
3604 false, false);
cbe79dfe
TG
3605
3606 if (gp
3607 && (gp->root.type == bfd_link_hash_defined
3608 || gp->root.type == bfd_link_hash_defweak))
3609 {
3610 asection *gp_sec = gp->root.u.def.section;
3611 gp_val = (gp->root.u.def.value
3612 + gp_sec->output_section->vma
3613 + gp_sec->output_offset);
3614 }
3615 else
3616 {
3617 /* Pick a sensible value. */
3618
3619 if (ia64_info->min_short_sec)
3620 {
3621 bfd_vma short_range = max_short_vma - min_short_vma;
3622
3623 /* If min_short_sec is set, pick one in the middle bewteen
3624 min_short_vma and max_short_vma. */
3625 if (short_range >= 0x400000)
3626 goto overflow;
3627 gp_val = min_short_vma + short_range / 2;
3628 }
3629 else
3630 {
3631 asection *got_sec = ia64_info->root.sgot;
3632
3633 /* Start with just the address of the .got. */
3634 if (got_sec)
3635 gp_val = got_sec->output_section->vma;
3636 else if (max_short_vma != 0)
3637 gp_val = min_short_vma;
3638 else if (max_vma - min_vma < 0x200000)
3639 gp_val = min_vma;
3640 else
3641 gp_val = max_vma - 0x200000 + 8;
3642 }
3643
3644 /* If it is possible to address the entire image, but we
3645 don't with the choice above, adjust. */
3646 if (max_vma - min_vma < 0x400000
3647 && (max_vma - gp_val >= 0x200000
3648 || gp_val - min_vma > 0x200000))
3649 gp_val = min_vma + 0x200000;
3650 else if (max_short_vma != 0)
3651 {
3652 /* If we don't cover all the short data, adjust. */
3653 if (max_short_vma - gp_val >= 0x200000)
3654 gp_val = min_short_vma + 0x200000;
3655
3656 /* If we're addressing stuff past the end, adjust back. */
3657 if (gp_val > max_vma)
3658 gp_val = max_vma - 0x200000 + 8;
3659 }
3660 }
3661
3662 /* Validate whether all SHF_IA_64_SHORT sections are within
3663 range of the chosen GP. */
3664
3665 if (max_short_vma != 0)
3666 {
3667 if (max_short_vma - min_short_vma >= 0x400000)
3668 {
dc1e8a47 3669 overflow:
4eca0228 3670 _bfd_error_handler
695344c0 3671 /* xgettext:c-format */
2dcf00ce
AM
3672 (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"),
3673 abfd, (uint64_t) (max_short_vma - min_short_vma));
0a1b45a2 3674 return false;
cbe79dfe
TG
3675 }
3676 else if ((gp_val > min_short_vma
3677 && gp_val - min_short_vma > 0x200000)
3678 || (gp_val < max_short_vma
3679 && max_short_vma - gp_val >= 0x200000))
3680 {
4eca0228 3681 _bfd_error_handler
871b3ab2 3682 (_("%pB: __gp does not cover short data segment"), abfd);
0a1b45a2 3683 return false;
cbe79dfe
TG
3684 }
3685 }
3686
3687 _bfd_set_gp_value (abfd, gp_val);
3688
0a1b45a2 3689 return true;
cbe79dfe
TG
3690}
3691
0a1b45a2 3692static bool
cbe79dfe
TG
3693elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3694{
3695 struct elfNN_ia64_link_hash_table *ia64_info;
3696 asection *unwind_output_sec;
3697
3698 ia64_info = elfNN_ia64_hash_table (info);
3699 if (ia64_info == NULL)
0a1b45a2 3700 return false;
cbe79dfe
TG
3701
3702 /* Make sure we've got ourselves a nice fat __gp value. */
0e1862bb 3703 if (!bfd_link_relocatable (info))
cbe79dfe
TG
3704 {
3705 bfd_vma gp_val;
3706 struct elf_link_hash_entry *gp;
3707
3708 /* We assume after gp is set, section size will only decrease. We
3709 need to adjust gp for it. */
3710 _bfd_set_gp_value (abfd, 0);
0a1b45a2
AM
3711 if (! elfNN_ia64_choose_gp (abfd, info, true))
3712 return false;
cbe79dfe
TG
3713 gp_val = _bfd_get_gp_value (abfd);
3714
0a1b45a2
AM
3715 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", false,
3716 false, false);
cbe79dfe
TG
3717 if (gp)
3718 {
3719 gp->root.type = bfd_link_hash_defined;
3720 gp->root.u.def.value = gp_val;
3721 gp->root.u.def.section = bfd_abs_section_ptr;
3722 }
3723 }
3724
3725 /* If we're producing a final executable, we need to sort the contents
3726 of the .IA_64.unwind section. Force this section to be relocated
3727 into memory rather than written immediately to the output file. */
3728 unwind_output_sec = NULL;
0e1862bb 3729 if (!bfd_link_relocatable (info))
cbe79dfe
TG
3730 {
3731 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3732 if (s)
3733 {
3734 unwind_output_sec = s->output_section;
3735 unwind_output_sec->contents
3736 = bfd_malloc (unwind_output_sec->size);
3737 if (unwind_output_sec->contents == NULL)
0a1b45a2 3738 return false;
cbe79dfe
TG
3739 }
3740 }
3741
3742 /* Invoke the regular ELF backend linker to do all the work. */
3743 if (!bfd_elf_final_link (abfd, info))
0a1b45a2 3744 return false;
cbe79dfe
TG
3745
3746 if (unwind_output_sec)
3747 {
3748 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3749 qsort (unwind_output_sec->contents,
3750 (size_t) (unwind_output_sec->size / 24),
3751 24,
3752 elfNN_ia64_unwind_entry_compare);
3753
3754 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3755 unwind_output_sec->contents, (bfd_vma) 0,
3756 unwind_output_sec->size))
0a1b45a2 3757 return false;
cbe79dfe
TG
3758 }
3759
0a1b45a2 3760 return true;
cbe79dfe
TG
3761}
3762
0f684201 3763static int
cbe79dfe
TG
3764elfNN_ia64_relocate_section (bfd *output_bfd,
3765 struct bfd_link_info *info,
3766 bfd *input_bfd,
3767 asection *input_section,
3768 bfd_byte *contents,
3769 Elf_Internal_Rela *relocs,
3770 Elf_Internal_Sym *local_syms,
3771 asection **local_sections)
3772{
3773 struct elfNN_ia64_link_hash_table *ia64_info;
3774 Elf_Internal_Shdr *symtab_hdr;
3775 Elf_Internal_Rela *rel;
3776 Elf_Internal_Rela *relend;
3777 asection *srel;
0a1b45a2 3778 bool ret_val = true; /* for non-fatal errors */
cbe79dfe
TG
3779 bfd_vma gp_val;
3780
3781 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3782 ia64_info = elfNN_ia64_hash_table (info);
3783 if (ia64_info == NULL)
0a1b45a2 3784 return false;
cbe79dfe
TG
3785
3786 /* Infect various flags from the input section to the output section. */
0e1862bb 3787 if (bfd_link_relocatable (info))
cbe79dfe
TG
3788 {
3789 bfd_vma flags;
3790
3791 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3792 flags &= SHF_IA_64_NORECOV;
3793
3794 elf_section_data(input_section->output_section)
3795 ->this_hdr.sh_flags |= flags;
3796 }
3797
3798 gp_val = _bfd_get_gp_value (output_bfd);
0a1b45a2 3799 srel = get_reloc_section (input_bfd, ia64_info, input_section, false);
cbe79dfe
TG
3800
3801 rel = relocs;
3802 relend = relocs + input_section->reloc_count;
3803 for (; rel < relend; ++rel)
3804 {
3805 struct elf_link_hash_entry *h;
3806 struct elfNN_ia64_dyn_sym_info *dyn_i;
3807 bfd_reloc_status_type r;
3808 reloc_howto_type *howto;
3809 unsigned long r_symndx;
3810 Elf_Internal_Sym *sym;
3811 unsigned int r_type;
3812 bfd_vma value;
3813 asection *sym_sec;
3814 bfd_byte *hit_addr;
0a1b45a2
AM
3815 bool dynamic_symbol_p;
3816 bool undef_weak_ref;
cbe79dfe
TG
3817
3818 r_type = ELFNN_R_TYPE (rel->r_info);
3819 if (r_type > R_IA64_MAX_RELOC_CODE)
3820 {
0aa13fee
AM
3821 /* xgettext:c-format */
3822 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3823 input_bfd, (int) r_type);
cbe79dfe 3824 bfd_set_error (bfd_error_bad_value);
0a1b45a2 3825 ret_val = false;
cbe79dfe
TG
3826 continue;
3827 }
3828
3829 howto = ia64_elf_lookup_howto (r_type);
f3185997
NC
3830 if (howto == NULL)
3831 {
0a1b45a2 3832 ret_val = false;
f3185997
NC
3833 continue;
3834 }
4b24dd1a 3835
cbe79dfe
TG
3836 r_symndx = ELFNN_R_SYM (rel->r_info);
3837 h = NULL;
3838 sym = NULL;
3839 sym_sec = NULL;
0a1b45a2 3840 undef_weak_ref = false;
cbe79dfe
TG
3841
3842 if (r_symndx < symtab_hdr->sh_info)
3843 {
3844 /* Reloc against local symbol. */
3845 asection *msec;
3846 sym = local_syms + r_symndx;
3847 sym_sec = local_sections[r_symndx];
3848 msec = sym_sec;
3849 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
0e1862bb 3850 if (!bfd_link_relocatable (info)
cbe79dfe
TG
3851 && (sym_sec->flags & SEC_MERGE) != 0
3852 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
dbaa2011 3853 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
d17fe7b7 3854 {
cbe79dfe
TG
3855 struct elfNN_ia64_local_hash_entry *loc_h;
3856
0a1b45a2 3857 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, false);
cbe79dfe
TG
3858 if (loc_h && ! loc_h->sec_merge_done)
3859 {
3860 struct elfNN_ia64_dyn_sym_info *dynent;
3861 unsigned int count;
3862
3863 for (count = loc_h->count, dynent = loc_h->info;
3864 count != 0;
3865 count--, dynent++)
3866 {
3867 msec = sym_sec;
3868 dynent->addend =
3869 _bfd_merged_section_offset (output_bfd, &msec,
3870 elf_section_data (msec)->
3871 sec_info,
3872 sym->st_value
3873 + dynent->addend);
3874 dynent->addend -= sym->st_value;
3875 dynent->addend += msec->output_section->vma
3876 + msec->output_offset
3877 - sym_sec->output_section->vma
3878 - sym_sec->output_offset;
3879 }
3880
3881 /* We may have introduced duplicated entries. We need
3882 to remove them properly. */
3883 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3884 if (count != loc_h->count)
3885 {
3886 loc_h->count = count;
3887 loc_h->sorted_count = count;
3888 }
3889
3890 loc_h->sec_merge_done = 1;
3891 }
3892 }
3893 }
3894 else
3895 {
0a1b45a2
AM
3896 bool unresolved_reloc;
3897 bool warned, ignored;
cbe79dfe
TG
3898 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3899
3900 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3901 r_symndx, symtab_hdr, sym_hashes,
3902 h, sym_sec, value,
62d887d4 3903 unresolved_reloc, warned, ignored);
cbe79dfe
TG
3904
3905 if (h->root.type == bfd_link_hash_undefweak)
0a1b45a2 3906 undef_weak_ref = true;
0e1862bb 3907 else if (warned || (ignored && bfd_link_executable (info)))
cbe79dfe
TG
3908 continue;
3909 }
3910
dbaa2011 3911 if (sym_sec != NULL && discarded_section (sym_sec))
cbe79dfe 3912 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3913 rel, 1, relend, howto, 0, contents);
cbe79dfe 3914
0e1862bb 3915 if (bfd_link_relocatable (info))
cbe79dfe
TG
3916 continue;
3917
3918 hit_addr = contents + rel->r_offset;
3919 value += rel->r_addend;
3920 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3921
3922 switch (r_type)
3923 {
3924 case R_IA64_NONE:
3925 case R_IA64_LDXMOV:
3926 continue;
3927
3928 case R_IA64_IMM14:
3929 case R_IA64_IMM22:
3930 case R_IA64_IMM64:
3931 case R_IA64_DIR32MSB:
3932 case R_IA64_DIR32LSB:
3933 case R_IA64_DIR64MSB:
3934 case R_IA64_DIR64LSB:
3935 /* Install a dynamic relocation for this reloc. */
0e1862bb 3936 if ((dynamic_symbol_p || bfd_link_pic (info))
cbe79dfe
TG
3937 && r_symndx != STN_UNDEF
3938 && (input_section->flags & SEC_ALLOC) != 0)
3939 {
3940 unsigned int dyn_r_type;
3941 long dynindx;
3942 bfd_vma addend;
3943
3944 BFD_ASSERT (srel != NULL);
3945
3946 switch (r_type)
3947 {
3948 case R_IA64_IMM14:
3949 case R_IA64_IMM22:
3950 case R_IA64_IMM64:
3951 /* ??? People shouldn't be doing non-pic code in
3952 shared libraries nor dynamic executables. */
4eca0228 3953 _bfd_error_handler
695344c0 3954 /* xgettext:c-format */
871b3ab2 3955 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
cbe79dfe
TG
3956 input_bfd,
3957 h ? h->root.root.string
3958 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3959 sym_sec));
0a1b45a2 3960 ret_val = false;
cbe79dfe
TG
3961 continue;
3962
3963 default:
3964 break;
3965 }
3966
3967 /* If we don't need dynamic symbol lookup, find a
3968 matching RELATIVE relocation. */
3969 dyn_r_type = r_type;
3970 if (dynamic_symbol_p)
3971 {
3972 dynindx = h->dynindx;
3973 addend = rel->r_addend;
3974 value = 0;
3975 }
3976 else
3977 {
3978 switch (r_type)
3979 {
3980 case R_IA64_DIR32MSB:
3981 dyn_r_type = R_IA64_REL32MSB;
3982 break;
3983 case R_IA64_DIR32LSB:
3984 dyn_r_type = R_IA64_REL32LSB;
3985 break;
3986 case R_IA64_DIR64MSB:
3987 dyn_r_type = R_IA64_REL64MSB;
3988 break;
3989 case R_IA64_DIR64LSB:
3990 dyn_r_type = R_IA64_REL64LSB;
3991 break;
3992
3993 default:
3994 break;
3995 }
3996 dynindx = 0;
3997 addend = value;
3998 }
3999
4000 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4001 srel, rel->r_offset, dyn_r_type,
4002 dynindx, addend);
4003 }
4004 /* Fall through. */
4005
4006 case R_IA64_LTV32MSB:
4007 case R_IA64_LTV32LSB:
4008 case R_IA64_LTV64MSB:
4009 case R_IA64_LTV64LSB:
4010 r = ia64_elf_install_value (hit_addr, value, r_type);
4011 break;
4012
4013 case R_IA64_GPREL22:
4014 case R_IA64_GPREL64I:
4015 case R_IA64_GPREL32MSB:
4016 case R_IA64_GPREL32LSB:
4017 case R_IA64_GPREL64MSB:
4018 case R_IA64_GPREL64LSB:
4019 if (dynamic_symbol_p)
4020 {
4eca0228 4021 _bfd_error_handler
695344c0 4022 /* xgettext:c-format */
871b3ab2 4023 (_("%pB: @gprel relocation against dynamic symbol %s"),
cbe79dfe
TG
4024 input_bfd,
4025 h ? h->root.root.string
4026 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4027 sym_sec));
0a1b45a2 4028 ret_val = false;
cbe79dfe
TG
4029 continue;
4030 }
4031 value -= gp_val;
4032 r = ia64_elf_install_value (hit_addr, value, r_type);
4033 break;
4034
4035 case R_IA64_LTOFF22:
4036 case R_IA64_LTOFF22X:
4037 case R_IA64_LTOFF64I:
0a1b45a2 4038 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
cbe79dfe
TG
4039 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4040 rel->r_addend, value, R_IA64_DIRNNLSB);
4041 value -= gp_val;
4042 r = ia64_elf_install_value (hit_addr, value, r_type);
4043 break;
4044
4045 case R_IA64_PLTOFF22:
4046 case R_IA64_PLTOFF64I:
4047 case R_IA64_PLTOFF64MSB:
4048 case R_IA64_PLTOFF64LSB:
0a1b45a2
AM
4049 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
4050 value = set_pltoff_entry (output_bfd, info, dyn_i, value, false);
cbe79dfe
TG
4051 value -= gp_val;
4052 r = ia64_elf_install_value (hit_addr, value, r_type);
4053 break;
4054
4055 case R_IA64_FPTR64I:
4056 case R_IA64_FPTR32MSB:
4057 case R_IA64_FPTR32LSB:
4058 case R_IA64_FPTR64MSB:
4059 case R_IA64_FPTR64LSB:
0a1b45a2 4060 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
cbe79dfe
TG
4061 if (dyn_i->want_fptr)
4062 {
4063 if (!undef_weak_ref)
4064 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4065 }
0e1862bb 4066 if (!dyn_i->want_fptr || bfd_link_pie (info))
cbe79dfe
TG
4067 {
4068 long dynindx;
4069 unsigned int dyn_r_type = r_type;
4070 bfd_vma addend = rel->r_addend;
4071
4072 /* Otherwise, we expect the dynamic linker to create
4073 the entry. */
4074
4075 if (dyn_i->want_fptr)
4076 {
4077 if (r_type == R_IA64_FPTR64I)
4078 {
4079 /* We can't represent this without a dynamic symbol.
4080 Adjust the relocation to be against an output
4081 section symbol, which are always present in the
4082 dynamic symbol table. */
4083 /* ??? People shouldn't be doing non-pic code in
4084 shared libraries. Hork. */
4eca0228 4085 _bfd_error_handler
871b3ab2 4086 (_("%pB: linking non-pic code in a position independent executable"),
cbe79dfe 4087 input_bfd);
0a1b45a2 4088 ret_val = false;
cbe79dfe
TG
4089 continue;
4090 }
4091 dynindx = 0;
4092 addend = value;
4093 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4094 }
4095 else if (h)
4096 {
4097 if (h->dynindx != -1)
4098 dynindx = h->dynindx;
4099 else
4100 dynindx = (_bfd_elf_link_lookup_local_dynindx
4101 (info, h->root.u.def.section->owner,
4102 global_sym_index (h)));
4103 value = 0;
4104 }
4105 else
4106 {
4107 dynindx = (_bfd_elf_link_lookup_local_dynindx
4108 (info, input_bfd, (long) r_symndx));
4109 value = 0;
4110 }
4111
4112 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4113 srel, rel->r_offset, dyn_r_type,
4114 dynindx, addend);
4115 }
4116
4117 r = ia64_elf_install_value (hit_addr, value, r_type);
4118 break;
4119
4120 case R_IA64_LTOFF_FPTR22:
4121 case R_IA64_LTOFF_FPTR64I:
4122 case R_IA64_LTOFF_FPTR32MSB:
4123 case R_IA64_LTOFF_FPTR32LSB:
4124 case R_IA64_LTOFF_FPTR64MSB:
4125 case R_IA64_LTOFF_FPTR64LSB:
4126 {
4127 long dynindx;
4128
0a1b45a2 4129 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
cbe79dfe
TG
4130 if (dyn_i->want_fptr)
4131 {
4132 BFD_ASSERT (h == NULL || h->dynindx == -1);
07d6d2b8
AM
4133 if (!undef_weak_ref)
4134 value = set_fptr_entry (output_bfd, info, dyn_i, value);
cbe79dfe
TG
4135 dynindx = -1;
4136 }
4137 else
4138 {
07d6d2b8 4139 /* Otherwise, we expect the dynamic linker to create
cbe79dfe 4140 the entry. */
07d6d2b8 4141 if (h)
cbe79dfe
TG
4142 {
4143 if (h->dynindx != -1)
4144 dynindx = h->dynindx;
4145 else
4146 dynindx = (_bfd_elf_link_lookup_local_dynindx
4147 (info, h->root.u.def.section->owner,
4148 global_sym_index (h)));
4149 }
4150 else
4151 dynindx = (_bfd_elf_link_lookup_local_dynindx
4152 (info, input_bfd, (long) r_symndx));
4153 value = 0;
4154 }
4155
4156 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4157 rel->r_addend, value, R_IA64_FPTRNNLSB);
4158 value -= gp_val;
4159 r = ia64_elf_install_value (hit_addr, value, r_type);
4160 }
4161 break;
4162
4163 case R_IA64_PCREL32MSB:
4164 case R_IA64_PCREL32LSB:
4165 case R_IA64_PCREL64MSB:
4166 case R_IA64_PCREL64LSB:
4167 /* Install a dynamic relocation for this reloc. */
4168 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4169 {
4170 BFD_ASSERT (srel != NULL);
4171
4172 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4173 srel, rel->r_offset, r_type,
4174 h->dynindx, rel->r_addend);
4175 }
4176 goto finish_pcrel;
4177
4178 case R_IA64_PCREL21B:
4179 case R_IA64_PCREL60B:
4180 /* We should have created a PLT entry for any dynamic symbol. */
4181 dyn_i = NULL;
4182 if (h)
0a1b45a2 4183 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false);
cbe79dfe
TG
4184
4185 if (dyn_i && dyn_i->want_plt2)
4186 {
4187 /* Should have caught this earlier. */
4188 BFD_ASSERT (rel->r_addend == 0);
4189
4190 value = (ia64_info->root.splt->output_section->vma
4191 + ia64_info->root.splt->output_offset
4192 + dyn_i->plt2_offset);
4193 }
4194 else
4195 {
4196 /* Since there's no PLT entry, Validate that this is
4197 locally defined. */
4198 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4199
4200 /* If the symbol is undef_weak, we shouldn't be trying
4201 to call it. There's every chance that we'd wind up
4202 with an out-of-range fixup here. Don't bother setting
4203 any value at all. */
4204 if (undef_weak_ref)
4205 continue;
4206 }
4207 goto finish_pcrel;
4208
4209 case R_IA64_PCREL21BI:
4210 case R_IA64_PCREL21F:
4211 case R_IA64_PCREL21M:
4212 case R_IA64_PCREL22:
4213 case R_IA64_PCREL64I:
4214 /* The PCREL21BI reloc is specifically not intended for use with
4215 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4216 fixup code, and thus probably ought not be dynamic. The
4217 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4218 if (dynamic_symbol_p)
4219 {
4220 const char *msg;
4221
4222 if (r_type == R_IA64_PCREL21BI)
695344c0 4223 /* xgettext:c-format */
871b3ab2 4224 msg = _("%pB: @internal branch to dynamic symbol %s");
cbe79dfe 4225 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
695344c0 4226 /* xgettext:c-format */
871b3ab2 4227 msg = _("%pB: speculation fixup to dynamic symbol %s");
cbe79dfe 4228 else
695344c0 4229 /* xgettext:c-format */
871b3ab2 4230 msg = _("%pB: @pcrel relocation against dynamic symbol %s");
4eca0228
AM
4231 _bfd_error_handler (msg, input_bfd,
4232 h ? h->root.root.string
4233 : bfd_elf_sym_name (input_bfd,
4234 symtab_hdr,
4235 sym,
4236 sym_sec));
0a1b45a2 4237 ret_val = false;
cbe79dfe
TG
4238 continue;
4239 }
4240 goto finish_pcrel;
4241
4242 finish_pcrel:
4243 /* Make pc-relative. */
4244 value -= (input_section->output_section->vma
4245 + input_section->output_offset
4246 + rel->r_offset) & ~ (bfd_vma) 0x3;
4247 r = ia64_elf_install_value (hit_addr, value, r_type);
4248 break;
4249
4250 case R_IA64_SEGREL32MSB:
4251 case R_IA64_SEGREL32LSB:
4252 case R_IA64_SEGREL64MSB:
4253 case R_IA64_SEGREL64LSB:
4254 {
4255 /* Find the segment that contains the output_section. */
4256 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4257 (output_bfd, input_section->output_section);
4258
4259 if (p == NULL)
4260 {
4261 r = bfd_reloc_notsupported;
4262 }
4263 else
4264 {
4265 /* The VMA of the segment is the vaddr of the associated
4266 program header. */
4267 if (value > p->p_vaddr)
4268 value -= p->p_vaddr;
4269 else
4270 value = 0;
4271 r = ia64_elf_install_value (hit_addr, value, r_type);
4272 }
4273 break;
4274 }
4275
4276 case R_IA64_SECREL32MSB:
4277 case R_IA64_SECREL32LSB:
4278 case R_IA64_SECREL64MSB:
4279 case R_IA64_SECREL64LSB:
4280 /* Make output-section relative to section where the symbol
4281 is defined. PR 475 */
4282 if (sym_sec)
4283 value -= sym_sec->output_section->vma;
4284 r = ia64_elf_install_value (hit_addr, value, r_type);
4285 break;
4286
4287 case R_IA64_IPLTMSB:
4288 case R_IA64_IPLTLSB:
4289 /* Install a dynamic relocation for this reloc. */
0e1862bb 4290 if ((dynamic_symbol_p || bfd_link_pic (info))
cbe79dfe
TG
4291 && (input_section->flags & SEC_ALLOC) != 0)
4292 {
4293 BFD_ASSERT (srel != NULL);
4294
4295 /* If we don't need dynamic symbol lookup, install two
4296 RELATIVE relocations. */
4297 if (!dynamic_symbol_p)
4298 {
4299 unsigned int dyn_r_type;
4300
4301 if (r_type == R_IA64_IPLTMSB)
4302 dyn_r_type = R_IA64_REL64MSB;
4303 else
4304 dyn_r_type = R_IA64_REL64LSB;
4305
4306 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4307 input_section,
4308 srel, rel->r_offset,
4309 dyn_r_type, 0, value);
4310 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4311 input_section,
4312 srel, rel->r_offset + 8,
4313 dyn_r_type, 0, gp_val);
4314 }
4315 else
4316 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4317 srel, rel->r_offset, r_type,
4318 h->dynindx, rel->r_addend);
4319 }
4320
4321 if (r_type == R_IA64_IPLTMSB)
4322 r_type = R_IA64_DIR64MSB;
4323 else
4324 r_type = R_IA64_DIR64LSB;
4325 ia64_elf_install_value (hit_addr, value, r_type);
4326 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4327 break;
4328
4329 case R_IA64_TPREL14:
4330 case R_IA64_TPREL22:
4331 case R_IA64_TPREL64I:
4332 if (elf_hash_table (info)->tls_sec == NULL)
4333 goto missing_tls_sec;
4334 value -= elfNN_ia64_tprel_base (info);
4335 r = ia64_elf_install_value (hit_addr, value, r_type);
4336 break;
4337
4338 case R_IA64_DTPREL14:
4339 case R_IA64_DTPREL22:
4340 case R_IA64_DTPREL64I:
4341 case R_IA64_DTPREL32LSB:
4342 case R_IA64_DTPREL32MSB:
4343 case R_IA64_DTPREL64LSB:
4344 case R_IA64_DTPREL64MSB:
4345 if (elf_hash_table (info)->tls_sec == NULL)
4346 goto missing_tls_sec;
4347 value -= elfNN_ia64_dtprel_base (info);
4348 r = ia64_elf_install_value (hit_addr, value, r_type);
4349 break;
4350
4351 case R_IA64_LTOFF_TPREL22:
4352 case R_IA64_LTOFF_DTPMOD22:
4353 case R_IA64_LTOFF_DTPREL22:
4354 {
4355 int got_r_type;
4356 long dynindx = h ? h->dynindx : -1;
4357 bfd_vma r_addend = rel->r_addend;
4358
4359 switch (r_type)
4360 {
4361 default:
4362 case R_IA64_LTOFF_TPREL22:
4363 if (!dynamic_symbol_p)
4364 {
4365 if (elf_hash_table (info)->tls_sec == NULL)
4366 goto missing_tls_sec;
0e1862bb 4367 if (!bfd_link_pic (info))
cbe79dfe
TG
4368 value -= elfNN_ia64_tprel_base (info);
4369 else
4370 {
4371 r_addend += value - elfNN_ia64_dtprel_base (info);
4372 dynindx = 0;
4373 }
4374 }
4375 got_r_type = R_IA64_TPREL64LSB;
4376 break;
4377 case R_IA64_LTOFF_DTPMOD22:
0e1862bb 4378 if (!dynamic_symbol_p && !bfd_link_pic (info))
cbe79dfe
TG
4379 value = 1;
4380 got_r_type = R_IA64_DTPMOD64LSB;
4381 break;
4382 case R_IA64_LTOFF_DTPREL22:
4383 if (!dynamic_symbol_p)
4384 {
4385 if (elf_hash_table (info)->tls_sec == NULL)
4386 goto missing_tls_sec;
4387 value -= elfNN_ia64_dtprel_base (info);
4388 }
4389 got_r_type = R_IA64_DTPRELNNLSB;
4390 break;
4391 }
0a1b45a2 4392 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
cbe79dfe
TG
4393 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4394 value, got_r_type);
4395 value -= gp_val;
4396 r = ia64_elf_install_value (hit_addr, value, r_type);
4397 }
4398 break;
4399
4400 default:
4401 r = bfd_reloc_notsupported;
4402 break;
4403 }
4404
4405 switch (r)
4406 {
4407 case bfd_reloc_ok:
4408 break;
4409
4410 case bfd_reloc_undefined:
4411 /* This can happen for global table relative relocs if
4412 __gp is undefined. This is a panic situation so we
4413 don't try to continue. */
4414 (*info->callbacks->undefined_symbol)
4415 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
0a1b45a2 4416 return false;
cbe79dfe
TG
4417
4418 case bfd_reloc_notsupported:
4419 {
4420 const char *name;
4421
4422 if (h)
4423 name = h->root.root.string;
4424 else
4425 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4426 sym_sec);
1a72702b
AM
4427 (*info->callbacks->warning) (info, _("unsupported reloc"),
4428 name, input_bfd,
4429 input_section, rel->r_offset);
0a1b45a2 4430 ret_val = false;
cbe79dfe
TG
4431 }
4432 break;
4433
4434 case bfd_reloc_dangerous:
4435 case bfd_reloc_outofrange:
4436 case bfd_reloc_overflow:
4437 default:
dc1e8a47 4438 missing_tls_sec:
cbe79dfe
TG
4439 {
4440 const char *name;
4441
4442 if (h)
4443 name = h->root.root.string;
4444 else
4445 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4446 sym_sec);
4447
4448 switch (r_type)
4449 {
4450 case R_IA64_TPREL14:
4451 case R_IA64_TPREL22:
4452 case R_IA64_TPREL64I:
4453 case R_IA64_DTPREL14:
4454 case R_IA64_DTPREL22:
4455 case R_IA64_DTPREL64I:
4456 case R_IA64_DTPREL32LSB:
4457 case R_IA64_DTPREL32MSB:
4458 case R_IA64_DTPREL64LSB:
4459 case R_IA64_DTPREL64MSB:
4460 case R_IA64_LTOFF_TPREL22:
4461 case R_IA64_LTOFF_DTPMOD22:
4462 case R_IA64_LTOFF_DTPREL22:
4eca0228 4463 _bfd_error_handler
695344c0 4464 /* xgettext:c-format */
871b3ab2 4465 (_("%pB: missing TLS section for relocation %s against `%s'"
2dcf00ce 4466 " at %#" PRIx64 " in section `%pA'."),
c08bb8dd 4467 input_bfd, howto->name, name,
2dcf00ce 4468 (uint64_t) rel->r_offset, input_section);
cbe79dfe
TG
4469 break;
4470
4471 case R_IA64_PCREL21B:
4472 case R_IA64_PCREL21BI:
4473 case R_IA64_PCREL21M:
4474 case R_IA64_PCREL21F:
4475 if (is_elf_hash_table (info->hash))
4476 {
4477 /* Relaxtion is always performed for ELF output.
4478 Overflow failures for those relocations mean
4479 that the section is too big to relax. */
4eca0228 4480 _bfd_error_handler
695344c0 4481 /* xgettext:c-format */
2dcf00ce
AM
4482 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4483 " in section `%pA' with size %#" PRIx64
4484 " (> 0x1000000)."),
4485 input_bfd, howto->name, name, (uint64_t) rel->r_offset,
4486 input_section, (uint64_t) input_section->size);
cbe79dfe
TG
4487 break;
4488 }
1a0670f3 4489 /* Fall through. */
cbe79dfe 4490 default:
1a72702b
AM
4491 (*info->callbacks->reloc_overflow) (info,
4492 &h->root,
4493 name,
4494 howto->name,
4495 (bfd_vma) 0,
4496 input_bfd,
4497 input_section,
4498 rel->r_offset);
cbe79dfe
TG
4499 break;
4500 }
4501
0a1b45a2 4502 ret_val = false;
cbe79dfe
TG
4503 }
4504 break;
4505 }
4506 }
4507
4508 return ret_val;
4509}
4510
0a1b45a2 4511static bool
cbe79dfe
TG
4512elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4513 struct bfd_link_info *info,
4514 struct elf_link_hash_entry *h,
4515 Elf_Internal_Sym *sym)
4516{
4517 struct elfNN_ia64_link_hash_table *ia64_info;
4518 struct elfNN_ia64_dyn_sym_info *dyn_i;
4519
4520 ia64_info = elfNN_ia64_hash_table (info);
cbe79dfe 4521
0a1b45a2 4522 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false);
cbe79dfe
TG
4523
4524 /* Fill in the PLT data, if required. */
4525 if (dyn_i && dyn_i->want_plt)
4526 {
4527 Elf_Internal_Rela outrel;
4528 bfd_byte *loc;
4529 asection *plt_sec;
4530 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4531
4532 gp_val = _bfd_get_gp_value (output_bfd);
4533
4534 /* Initialize the minimal PLT entry. */
4535
4536 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4537 plt_sec = ia64_info->root.splt;
4538 loc = plt_sec->contents + dyn_i->plt_offset;
4539
4540 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4541 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4542 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4543
4544 plt_addr = (plt_sec->output_section->vma
4545 + plt_sec->output_offset
4546 + dyn_i->plt_offset);
0a1b45a2 4547 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, true);
cbe79dfe
TG
4548
4549 /* Initialize the FULL PLT entry, if needed. */
4550 if (dyn_i->want_plt2)
4551 {
4552 loc = plt_sec->contents + dyn_i->plt2_offset;
4553
4554 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4555 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4556
4557 /* Mark the symbol as undefined, rather than as defined in the
4558 plt section. Leave the value alone. */
4559 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4560 first place. But perhaps elflink.c did some for us. */
4561 if (!h->def_regular)
4562 sym->st_shndx = SHN_UNDEF;
4563 }
4564
4565 /* Create the dynamic relocation. */
4566 outrel.r_offset = pltoff_addr;
4567 if (bfd_little_endian (output_bfd))
4568 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4569 else
4570 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4571 outrel.r_addend = 0;
4572
4573 /* This is fun. In the .IA_64.pltoff section, we've got entries
4574 that correspond both to real PLT entries, and those that
4575 happened to resolve to local symbols but need to be created
4576 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4577 relocations for the real PLT should come at the end of the
4578 section, so that they can be indexed by plt entry at runtime.
4579
4580 We emitted all of the relocations for the non-PLT @pltoff
4581 entries during relocate_section. So we can consider the
4582 existing sec->reloc_count to be the base of the array of
4583 PLT relocations. */
4584
4585 loc = ia64_info->rel_pltoff_sec->contents;
4586 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4587 * sizeof (ElfNN_External_Rela));
4588 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4589 }
4590
4591 /* Mark some specially defined symbols as absolute. */
9637f6ef 4592 if (h == ia64_info->root.hdynamic
cbe79dfe
TG
4593 || h == ia64_info->root.hgot
4594 || h == ia64_info->root.hplt)
4595 sym->st_shndx = SHN_ABS;
4596
0a1b45a2 4597 return true;
cbe79dfe
TG
4598}
4599
0a1b45a2 4600static bool
cbe79dfe
TG
4601elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4602 struct bfd_link_info *info)
4603{
4604 struct elfNN_ia64_link_hash_table *ia64_info;
4605 bfd *dynobj;
4606
4607 ia64_info = elfNN_ia64_hash_table (info);
4608 if (ia64_info == NULL)
0a1b45a2 4609 return false;
cbe79dfe
TG
4610
4611 dynobj = ia64_info->root.dynobj;
4612
ce558b89 4613 if (ia64_info->root.dynamic_sections_created)
cbe79dfe
TG
4614 {
4615 ElfNN_External_Dyn *dyncon, *dynconend;
4616 asection *sdyn, *sgotplt;
4617 bfd_vma gp_val;
4618
3d4d4302 4619 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
ce558b89 4620 sgotplt = ia64_info->root.sgotplt;
cbe79dfe
TG
4621 BFD_ASSERT (sdyn != NULL);
4622 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4623 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4624
4625 gp_val = _bfd_get_gp_value (abfd);
4626
4627 for (; dyncon < dynconend; dyncon++)
4628 {
4629 Elf_Internal_Dyn dyn;
4630
4631 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4632
4633 switch (dyn.d_tag)
4634 {
4635 case DT_PLTGOT:
4636 dyn.d_un.d_ptr = gp_val;
4637 break;
4638
4639 case DT_PLTRELSZ:
4640 dyn.d_un.d_val = (ia64_info->minplt_entries
4641 * sizeof (ElfNN_External_Rela));
4642 break;
4643
4644 case DT_JMPREL:
4645 /* See the comment above in finish_dynamic_symbol. */
4646 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4647 + ia64_info->rel_pltoff_sec->output_offset
4648 + (ia64_info->rel_pltoff_sec->reloc_count
4649 * sizeof (ElfNN_External_Rela)));
4650 break;
4651
4652 case DT_IA_64_PLT_RESERVE:
4653 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4654 + sgotplt->output_offset);
4655 break;
cbe79dfe
TG
4656 }
4657
4658 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4659 }
4660
4661 /* Initialize the PLT0 entry. */
4662 if (ia64_info->root.splt)
4663 {
4664 bfd_byte *loc = ia64_info->root.splt->contents;
4665 bfd_vma pltres;
4666
4667 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4668
4669 pltres = (sgotplt->output_section->vma
4670 + sgotplt->output_offset
4671 - gp_val);
4672
4673 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4674 }
4675 }
4676
0a1b45a2 4677 return true;
cbe79dfe
TG
4678}
4679\f
4680/* ELF file flag handling: */
4681
4682/* Function to keep IA-64 specific file flags. */
0a1b45a2 4683static bool
cbe79dfe
TG
4684elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4685{
4686 BFD_ASSERT (!elf_flags_init (abfd)
4687 || elf_elfheader (abfd)->e_flags == flags);
4688
4689 elf_elfheader (abfd)->e_flags = flags;
0a1b45a2
AM
4690 elf_flags_init (abfd) = true;
4691 return true;
cbe79dfe
TG
4692}
4693
4694/* Merge backend specific data from an object file to the output
4695 object file when linking. */
b26a3d58 4696
0a1b45a2 4697static bool
50e03d47 4698elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
cbe79dfe 4699{
50e03d47 4700 bfd *obfd = info->output_bfd;
cbe79dfe
TG
4701 flagword out_flags;
4702 flagword in_flags;
0a1b45a2 4703 bool ok = true;
cbe79dfe 4704
6b728d32
AM
4705 /* FIXME: What should be checked when linking shared libraries? */
4706 if ((ibfd->flags & DYNAMIC) != 0)
0a1b45a2 4707 return true;
6b728d32 4708
b26a3d58 4709 if (!is_ia64_elf (ibfd) || !is_ia64_elf (obfd))
0a1b45a2 4710 return true;
cbe79dfe
TG
4711
4712 in_flags = elf_elfheader (ibfd)->e_flags;
4713 out_flags = elf_elfheader (obfd)->e_flags;
4714
4715 if (! elf_flags_init (obfd))
4716 {
0a1b45a2 4717 elf_flags_init (obfd) = true;
cbe79dfe
TG
4718 elf_elfheader (obfd)->e_flags = in_flags;
4719
4720 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4721 && bfd_get_arch_info (obfd)->the_default)
4722 {
4723 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4724 bfd_get_mach (ibfd));
4725 }
4726
0a1b45a2 4727 return true;
cbe79dfe
TG
4728 }
4729
4730 /* Check flag compatibility. */
4731 if (in_flags == out_flags)
0a1b45a2 4732 return true;
cbe79dfe
TG
4733
4734 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4735 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4736 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4737
4738 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4739 {
4eca0228 4740 _bfd_error_handler
871b3ab2 4741 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
cbe79dfe
TG
4742 ibfd);
4743
4744 bfd_set_error (bfd_error_bad_value);
0a1b45a2 4745 ok = false;
cbe79dfe
TG
4746 }
4747 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4748 {
4eca0228 4749 _bfd_error_handler
871b3ab2 4750 (_("%pB: linking big-endian files with little-endian files"),
cbe79dfe
TG
4751 ibfd);
4752
4753 bfd_set_error (bfd_error_bad_value);
0a1b45a2 4754 ok = false;
cbe79dfe
TG
4755 }
4756 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4757 {
4eca0228 4758 _bfd_error_handler
871b3ab2 4759 (_("%pB: linking 64-bit files with 32-bit files"),
cbe79dfe
TG
4760 ibfd);
4761
4762 bfd_set_error (bfd_error_bad_value);
0a1b45a2 4763 ok = false;
cbe79dfe
TG
4764 }
4765 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4766 {
4eca0228 4767 _bfd_error_handler
871b3ab2 4768 (_("%pB: linking constant-gp files with non-constant-gp files"),
cbe79dfe
TG
4769 ibfd);
4770
4771 bfd_set_error (bfd_error_bad_value);
0a1b45a2 4772 ok = false;
cbe79dfe
TG
4773 }
4774 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4775 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4776 {
4eca0228 4777 _bfd_error_handler
871b3ab2 4778 (_("%pB: linking auto-pic files with non-auto-pic files"),
cbe79dfe
TG
4779 ibfd);
4780
4781 bfd_set_error (bfd_error_bad_value);
0a1b45a2 4782 ok = false;
cbe79dfe
TG
4783 }
4784
4785 return ok;
4786}
4787
0a1b45a2 4788static bool
2c3fc389 4789elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
cbe79dfe
TG
4790{
4791 FILE *file = (FILE *) ptr;
4792 flagword flags = elf_elfheader (abfd)->e_flags;
4793
4794 BFD_ASSERT (abfd != NULL && ptr != NULL);
4795
4796 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4797 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4798 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4799 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4800 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4801 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4802 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4803 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4804 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4805
4806 _bfd_elf_print_private_bfd_data (abfd, ptr);
0a1b45a2 4807 return true;
cbe79dfe
TG
4808}
4809
4810static enum elf_reloc_type_class
7e612e98
AM
4811elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4812 const asection *rel_sec ATTRIBUTE_UNUSED,
4813 const Elf_Internal_Rela *rela)
cbe79dfe
TG
4814{
4815 switch ((int) ELFNN_R_TYPE (rela->r_info))
4816 {
4817 case R_IA64_REL32MSB:
4818 case R_IA64_REL32LSB:
4819 case R_IA64_REL64MSB:
4820 case R_IA64_REL64LSB:
4821 return reloc_class_relative;
4822 case R_IA64_IPLTMSB:
4823 case R_IA64_IPLTLSB:
4824 return reloc_class_plt;
4825 case R_IA64_COPY:
4826 return reloc_class_copy;
4827 default:
4828 return reloc_class_normal;
4829 }
4830}
4831
4832static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4833{
07d6d2b8 4834 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
cbe79dfe 4835 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
07d6d2b8 4836 { NULL, 0, 0, 0, 0 }
cbe79dfe
TG
4837};
4838
0a1b45a2 4839static bool
cbe79dfe
TG
4840elfNN_ia64_object_p (bfd *abfd)
4841{
4842 asection *sec;
4843 asection *group, *unwi, *unw;
4844 flagword flags;
4845 const char *name;
4846 char *unwi_name, *unw_name;
986f0783 4847 size_t amt;
cbe79dfe
TG
4848
4849 if (abfd->flags & DYNAMIC)
0a1b45a2 4850 return true;
cbe79dfe
TG
4851
4852 /* Flags for fake group section. */
4853 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4854 | SEC_EXCLUDE);
4855
4856 /* We add a fake section group for each .gnu.linkonce.t.* section,
4857 which isn't in a section group, and its unwind sections. */
4858 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4859 {
4860 if (elf_sec_group (sec) == NULL
4861 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4862 == (SEC_LINK_ONCE | SEC_CODE))
08dedd66 4863 && startswith (sec->name, ".gnu.linkonce.t."))
cbe79dfe
TG
4864 {
4865 name = sec->name + 16;
4866
4867 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4868 unwi_name = bfd_alloc (abfd, amt);
4869 if (!unwi_name)
0a1b45a2 4870 return false;
cbe79dfe
TG
4871
4872 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4873 unwi = bfd_get_section_by_name (abfd, unwi_name);
4874
4875 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4876 unw_name = bfd_alloc (abfd, amt);
4877 if (!unw_name)
0a1b45a2 4878 return false;
cbe79dfe
TG
4879
4880 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4881 unw = bfd_get_section_by_name (abfd, unw_name);
4882
4883 /* We need to create a fake group section for it and its
4884 unwind sections. */
4885 group = bfd_make_section_anyway_with_flags (abfd, name,
4886 flags);
4887 if (group == NULL)
0a1b45a2 4888 return false;
cbe79dfe
TG
4889
4890 /* Move the fake group section to the beginning. */
4891 bfd_section_list_remove (abfd, group);
4892 bfd_section_list_prepend (abfd, group);
4893
4894 elf_next_in_group (group) = sec;
4895
4896 elf_group_name (sec) = name;
4897 elf_next_in_group (sec) = sec;
4898 elf_sec_group (sec) = group;
4899
4900 if (unwi)
4901 {
4902 elf_group_name (unwi) = name;
4903 elf_next_in_group (unwi) = sec;
4904 elf_next_in_group (sec) = unwi;
4905 elf_sec_group (unwi) = group;
4906 }
4907
4908 if (unw)
4909 {
4910 elf_group_name (unw) = name;
4911 if (unwi)
4912 {
4913 elf_next_in_group (unw) = elf_next_in_group (unwi);
4914 elf_next_in_group (unwi) = unw;
4915 }
4916 else
4917 {
4918 elf_next_in_group (unw) = sec;
4919 elf_next_in_group (sec) = unw;
4920 }
4921 elf_sec_group (unw) = group;
4922 }
4923
4924 /* Fake SHT_GROUP section header. */
4925 elf_section_data (group)->this_hdr.bfd_section = group;
4926 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4927 }
4928 }
0a1b45a2 4929 return true;
cbe79dfe
TG
4930}
4931
0a1b45a2 4932static bool
cbe79dfe
TG
4933elfNN_ia64_hpux_vec (const bfd_target *vec)
4934{
6d00b590
AM
4935 extern const bfd_target ia64_elfNN_hpux_be_vec;
4936 return (vec == &ia64_elfNN_hpux_be_vec);
cbe79dfe
TG
4937}
4938
0a1b45a2 4939static bool
ed7e9d0b 4940elfNN_hpux_init_file_header (bfd *abfd, struct bfd_link_info *info)
cbe79dfe 4941{
ed7e9d0b 4942 Elf_Internal_Ehdr *i_ehdrp;
cbe79dfe 4943
ed7e9d0b 4944 if (!_bfd_elf_init_file_header (abfd, info))
0a1b45a2 4945 return false;
ed7e9d0b
AM
4946
4947 i_ehdrp = elf_elfheader (abfd);
cbe79dfe
TG
4948 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4949 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
0a1b45a2 4950 return true;
cbe79dfe
TG
4951}
4952
0a1b45a2 4953static bool
cbe79dfe
TG
4954elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4955 asection *sec, int *retval)
4956{
4957 if (bfd_is_com_section (sec))
4958 {
4959 *retval = SHN_IA_64_ANSI_COMMON;
0a1b45a2 4960 return true;
cbe79dfe 4961 }
0a1b45a2 4962 return false;
cbe79dfe
TG
4963}
4964
4965static void
4966elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4967 asymbol *asym)
4968{
4969 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4970
4971 switch (elfsym->internal_elf_sym.st_shndx)
4972 {
4973 case SHN_IA_64_ANSI_COMMON:
4974 asym->section = bfd_com_section_ptr;
4975 asym->value = elfsym->internal_elf_sym.st_size;
4976 asym->flags &= ~BSF_GLOBAL;
4977 break;
4978 }
4979}
a859124d
AM
4980
4981static void
4982ignore_errors (const char *fmt ATTRIBUTE_UNUSED, ...)
4983{
4984}
cbe79dfe 4985\f
6d00b590 4986#define TARGET_LITTLE_SYM ia64_elfNN_le_vec
cbe79dfe 4987#define TARGET_LITTLE_NAME "elfNN-ia64-little"
6d00b590 4988#define TARGET_BIG_SYM ia64_elfNN_be_vec
cbe79dfe
TG
4989#define TARGET_BIG_NAME "elfNN-ia64-big"
4990#define ELF_ARCH bfd_arch_ia64
4991#define ELF_TARGET_ID IA64_ELF_DATA
4992#define ELF_MACHINE_CODE EM_IA_64
4993#define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4994#define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4995#define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4996#define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4997
4998#define elf_backend_section_from_shdr \
4999 elfNN_ia64_section_from_shdr
5000#define elf_backend_section_flags \
5001 elfNN_ia64_section_flags
5002#define elf_backend_fake_sections \
5003 elfNN_ia64_fake_sections
5004#define elf_backend_final_write_processing \
5005 elfNN_ia64_final_write_processing
5006#define elf_backend_add_symbol_hook \
5007 elfNN_ia64_add_symbol_hook
5008#define elf_backend_additional_program_headers \
5009 elfNN_ia64_additional_program_headers
5010#define elf_backend_modify_segment_map \
5011 elfNN_ia64_modify_segment_map
6d6c25c8
AM
5012#define elf_backend_modify_headers \
5013 elfNN_ia64_modify_headers
cbe79dfe
TG
5014#define elf_info_to_howto \
5015 elfNN_ia64_info_to_howto
5016
5017#define bfd_elfNN_bfd_reloc_type_lookup \
5018 ia64_elf_reloc_type_lookup
5019#define bfd_elfNN_bfd_reloc_name_lookup \
5020 ia64_elf_reloc_name_lookup
5021#define bfd_elfNN_bfd_is_local_label_name \
5022 elfNN_ia64_is_local_label_name
5023#define bfd_elfNN_bfd_relax_section \
5024 elfNN_ia64_relax_section
5025
5026#define elf_backend_object_p \
5027 elfNN_ia64_object_p
5028
5029/* Stuff for the BFD linker: */
5030#define bfd_elfNN_bfd_link_hash_table_create \
5031 elfNN_ia64_hash_table_create
cbe79dfe
TG
5032#define elf_backend_create_dynamic_sections \
5033 elfNN_ia64_create_dynamic_sections
5034#define elf_backend_check_relocs \
5035 elfNN_ia64_check_relocs
5036#define elf_backend_adjust_dynamic_symbol \
5037 elfNN_ia64_adjust_dynamic_symbol
af969b14
AM
5038#define elf_backend_late_size_sections \
5039 elfNN_ia64_late_size_sections
cbe79dfe 5040#define elf_backend_omit_section_dynsym \
d00dd7dc 5041 _bfd_elf_omit_section_dynsym_all
cbe79dfe
TG
5042#define elf_backend_relocate_section \
5043 elfNN_ia64_relocate_section
5044#define elf_backend_finish_dynamic_symbol \
5045 elfNN_ia64_finish_dynamic_symbol
5046#define elf_backend_finish_dynamic_sections \
5047 elfNN_ia64_finish_dynamic_sections
5048#define bfd_elfNN_bfd_final_link \
5049 elfNN_ia64_final_link
5050
5051#define bfd_elfNN_bfd_merge_private_bfd_data \
5052 elfNN_ia64_merge_private_bfd_data
5053#define bfd_elfNN_bfd_set_private_flags \
5054 elfNN_ia64_set_private_flags
5055#define bfd_elfNN_bfd_print_private_bfd_data \
5056 elfNN_ia64_print_private_bfd_data
5057
5058#define elf_backend_plt_readonly 1
6e8d06db 5059#define elf_backend_can_gc_sections 1
cbe79dfe
TG
5060#define elf_backend_want_plt_sym 0
5061#define elf_backend_plt_alignment 5
5062#define elf_backend_got_header_size 0
5063#define elf_backend_want_got_plt 1
5064#define elf_backend_may_use_rel_p 1
5065#define elf_backend_may_use_rela_p 1
5066#define elf_backend_default_use_rela_p 1
5067#define elf_backend_want_dynbss 0
5068#define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5069#define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5070#define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5071#define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5072#define elf_backend_rela_normal 1
64f52338 5073#define elf_backend_dtrel_excludes_plt 1
cbe79dfe
TG
5074#define elf_backend_special_sections elfNN_ia64_special_sections
5075#define elf_backend_default_execstack 0
5076
5077/* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5078 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5079 We don't want to flood users with so many error messages. We turn
5080 off the warning for now. It will be turned on later when the Intel
5081 compiler is fixed. */
a859124d 5082#define elf_backend_link_order_error_handler ignore_errors
cbe79dfe
TG
5083
5084#include "elfNN-target.h"
5085
5086/* HPUX-specific vectors. */
5087
5088#undef TARGET_LITTLE_SYM
5089#undef TARGET_LITTLE_NAME
5090#undef TARGET_BIG_SYM
07d6d2b8
AM
5091#define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5092#undef TARGET_BIG_NAME
5093#define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
cbe79dfe
TG
5094
5095/* These are HP-UX specific functions. */
5096
ed7e9d0b
AM
5097#undef elf_backend_init_file_header
5098#define elf_backend_init_file_header elfNN_hpux_init_file_header
cbe79dfe
TG
5099
5100#undef elf_backend_section_from_bfd_section
5101#define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5102
5103#undef elf_backend_symbol_processing
5104#define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5105
5106#undef elf_backend_want_p_paddr_set_to_zero
5107#define elf_backend_want_p_paddr_set_to_zero 1
5108
5109#undef ELF_COMMONPAGESIZE
5110#undef ELF_OSABI
5111#define ELF_OSABI ELFOSABI_HPUX
5112
5113#undef elfNN_bed
5114#define elfNN_bed elfNN_ia64_hpux_bed
5115
5116#include "elfNN-target.h"