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[deliverable/binutils-gdb.git] / bfd / elfnn-ia64.c
1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2019 Free Software Foundation, Inc.
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"
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
42 typedef struct bfd_hash_entry *(*new_hash_entry_func)
43 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
44
45 /* In dynamically (linker-) created sections, we generally need to keep track
46 of the place a symbol or expression got allocated to. This is done via hash
47 tables that store entries of the following type. */
48
49 struct elfNN_ia64_dyn_sym_info
50 {
51 /* The addend for which this entry is relevant. */
52 bfd_vma addend;
53
54 bfd_vma got_offset;
55 bfd_vma fptr_offset;
56 bfd_vma pltoff_offset;
57 bfd_vma plt_offset;
58 bfd_vma plt2_offset;
59 bfd_vma tprel_offset;
60 bfd_vma dtpmod_offset;
61 bfd_vma dtprel_offset;
62
63 /* The symbol table entry, if any, that this was derived from. */
64 struct elf_link_hash_entry *h;
65
66 /* Used to count non-got, non-plt relocations for delayed sizing
67 of relocation sections. */
68 struct elfNN_ia64_dyn_reloc_entry
69 {
70 struct elfNN_ia64_dyn_reloc_entry *next;
71 asection *srel;
72 int type;
73 int count;
74
75 /* Is this reloc against readonly section? */
76 bfd_boolean reltext;
77 } *reloc_entries;
78
79 /* TRUE when the section contents have been updated. */
80 unsigned got_done : 1;
81 unsigned fptr_done : 1;
82 unsigned pltoff_done : 1;
83 unsigned tprel_done : 1;
84 unsigned dtpmod_done : 1;
85 unsigned dtprel_done : 1;
86
87 /* TRUE for the different kinds of linker data we want created. */
88 unsigned want_got : 1;
89 unsigned want_gotx : 1;
90 unsigned want_fptr : 1;
91 unsigned want_ltoff_fptr : 1;
92 unsigned want_plt : 1;
93 unsigned want_plt2 : 1;
94 unsigned want_pltoff : 1;
95 unsigned want_tprel : 1;
96 unsigned want_dtpmod : 1;
97 unsigned want_dtprel : 1;
98 };
99
100 struct elfNN_ia64_local_hash_entry
101 {
102 int id;
103 unsigned int r_sym;
104 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
105 unsigned int count;
106 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
107 unsigned int sorted_count;
108 /* The size of elfNN_ia64_dyn_sym_info array. */
109 unsigned int size;
110 /* The array of elfNN_ia64_dyn_sym_info. */
111 struct elfNN_ia64_dyn_sym_info *info;
112
113 /* TRUE if this hash entry's addends was translated for
114 SHF_MERGE optimization. */
115 unsigned sec_merge_done : 1;
116 };
117
118 struct elfNN_ia64_link_hash_entry
119 {
120 struct elf_link_hash_entry root;
121 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
122 unsigned int count;
123 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
124 unsigned int sorted_count;
125 /* The size of elfNN_ia64_dyn_sym_info array. */
126 unsigned int size;
127 /* The array of elfNN_ia64_dyn_sym_info. */
128 struct elfNN_ia64_dyn_sym_info *info;
129 };
130
131 struct elfNN_ia64_link_hash_table
132 {
133 /* The main hash table. */
134 struct elf_link_hash_table root;
135
136 asection *fptr_sec; /* Function descriptor table (or NULL). */
137 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
138 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
139 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
140
141 bfd_size_type minplt_entries; /* Number of minplt entries. */
142 unsigned reltext : 1; /* Are there relocs against readonly sections? */
143 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
144 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
145 /* There are maybe R_IA64_GPREL22 relocations, including those
146 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
147 sections. We need to record those sections so that we can choose
148 a proper GP to cover all R_IA64_GPREL22 relocations. */
149 asection *max_short_sec; /* Maximum short output section. */
150 bfd_vma max_short_offset; /* Maximum short offset. */
151 asection *min_short_sec; /* Minimum short output section. */
152 bfd_vma min_short_offset; /* Minimum short offset. */
153
154 htab_t loc_hash_table;
155 void *loc_hash_memory;
156 };
157
158 struct elfNN_ia64_allocate_data
159 {
160 struct bfd_link_info *info;
161 bfd_size_type ofs;
162 bfd_boolean only_got;
163 };
164
165 #define elfNN_ia64_hash_table(p) \
166 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
167 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
168
169 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
170 (struct elfNN_ia64_link_hash_table *ia64_info,
171 struct elf_link_hash_entry *h,
172 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
173 static bfd_boolean elfNN_ia64_dynamic_symbol_p
174 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
175 static bfd_boolean elfNN_ia64_choose_gp
176 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
177 static void elfNN_ia64_dyn_sym_traverse
178 (struct elfNN_ia64_link_hash_table *ia64_info,
179 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
180 void * info);
181 static bfd_boolean allocate_global_data_got
182 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
183 static bfd_boolean allocate_global_fptr_got
184 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
185 static bfd_boolean allocate_local_got
186 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
187 static bfd_boolean elfNN_ia64_hpux_vec
188 (const bfd_target *vec);
189 static bfd_boolean allocate_dynrel_entries
190 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
191 static asection *get_pltoff
192 (bfd *abfd, struct bfd_link_info *info,
193 struct elfNN_ia64_link_hash_table *ia64_info);
194 \f
195 /* ia64-specific relocation. */
196
197 /* Given a ELF reloc, return the matching HOWTO structure. */
198
199 static bfd_boolean
200 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
201 arelent *bfd_reloc,
202 Elf_Internal_Rela *elf_reloc)
203 {
204 unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info);
205
206 bfd_reloc->howto = ia64_elf_lookup_howto (r_type);
207 if (bfd_reloc->howto == NULL)
208 {
209 /* xgettext:c-format */
210 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
211 abfd, r_type);
212 bfd_set_error (bfd_error_bad_value);
213 return FALSE;
214 }
215
216 return TRUE;
217 }
218 \f
219 #define PLT_HEADER_SIZE (3 * 16)
220 #define PLT_MIN_ENTRY_SIZE (1 * 16)
221 #define PLT_FULL_ENTRY_SIZE (2 * 16)
222 #define PLT_RESERVED_WORDS 3
223
224 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
225 {
226 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
227 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
228 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
229 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
230 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
231 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
232 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
233 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
234 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
235 };
236
237 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
238 {
239 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
240 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
241 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
242 };
243
244 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
245 {
246 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
247 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
248 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
249 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
250 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
251 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
252 };
253
254 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
255
256 static const bfd_byte oor_brl[16] =
257 {
258 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
259 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
260 0x00, 0x00, 0x00, 0xc0
261 };
262
263 static const bfd_byte oor_ip[48] =
264 {
265 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
266 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
267 0x01, 0x00, 0x00, 0x60,
268 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
269 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
270 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
271 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
272 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
273 0x60, 0x00, 0x80, 0x00 /* br b6;; */
274 };
275
276 static size_t oor_branch_size = sizeof (oor_brl);
277
278 void
279 bfd_elfNN_ia64_after_parse (int itanium)
280 {
281 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
282 }
283 \f
284
285 /* Rename some of the generic section flags to better document how they
286 are used here. */
287 #define skip_relax_pass_0 sec_flg0
288 #define skip_relax_pass_1 sec_flg1
289
290 /* These functions do relaxation for IA-64 ELF. */
291
292 static void
293 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
294 struct elfNN_ia64_link_hash_table *ia64_info)
295 {
296 /* Skip ABS and SHF_IA_64_SHORT sections. */
297 if (sec == bfd_abs_section_ptr
298 || (sec->flags & SEC_SMALL_DATA) != 0)
299 return;
300
301 if (!ia64_info->min_short_sec)
302 {
303 ia64_info->max_short_sec = sec;
304 ia64_info->max_short_offset = offset;
305 ia64_info->min_short_sec = sec;
306 ia64_info->min_short_offset = offset;
307 }
308 else if (sec == ia64_info->max_short_sec
309 && offset > ia64_info->max_short_offset)
310 ia64_info->max_short_offset = offset;
311 else if (sec == ia64_info->min_short_sec
312 && offset < ia64_info->min_short_offset)
313 ia64_info->min_short_offset = offset;
314 else if (sec->output_section->vma
315 > ia64_info->max_short_sec->vma)
316 {
317 ia64_info->max_short_sec = sec;
318 ia64_info->max_short_offset = offset;
319 }
320 else if (sec->output_section->vma
321 < ia64_info->min_short_sec->vma)
322 {
323 ia64_info->min_short_sec = sec;
324 ia64_info->min_short_offset = offset;
325 }
326 }
327
328 static bfd_boolean
329 elfNN_ia64_relax_section (bfd *abfd, asection *sec,
330 struct bfd_link_info *link_info,
331 bfd_boolean *again)
332 {
333 struct one_fixup
334 {
335 struct one_fixup *next;
336 asection *tsec;
337 bfd_vma toff;
338 bfd_vma trampoff;
339 };
340
341 Elf_Internal_Shdr *symtab_hdr;
342 Elf_Internal_Rela *internal_relocs;
343 Elf_Internal_Rela *irel, *irelend;
344 bfd_byte *contents;
345 Elf_Internal_Sym *isymbuf = NULL;
346 struct elfNN_ia64_link_hash_table *ia64_info;
347 struct one_fixup *fixups = NULL;
348 bfd_boolean changed_contents = FALSE;
349 bfd_boolean changed_relocs = FALSE;
350 bfd_boolean changed_got = FALSE;
351 bfd_boolean skip_relax_pass_0 = TRUE;
352 bfd_boolean skip_relax_pass_1 = TRUE;
353 bfd_vma gp = 0;
354
355 /* Assume we're not going to change any sizes, and we'll only need
356 one pass. */
357 *again = FALSE;
358
359 if (bfd_link_relocatable (link_info))
360 (*link_info->callbacks->einfo)
361 (_("%P%F: --relax and -r may not be used together\n"));
362
363 /* Don't even try to relax for non-ELF outputs. */
364 if (!is_elf_hash_table (link_info->hash))
365 return FALSE;
366
367 /* Nothing to do if there are no relocations or there is no need for
368 the current pass. */
369 if ((sec->flags & SEC_RELOC) == 0
370 || sec->reloc_count == 0
371 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
372 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
373 return TRUE;
374
375 ia64_info = elfNN_ia64_hash_table (link_info);
376 if (ia64_info == NULL)
377 return FALSE;
378
379 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
380
381 /* Load the relocations for this section. */
382 internal_relocs = (_bfd_elf_link_read_relocs
383 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
384 link_info->keep_memory));
385 if (internal_relocs == NULL)
386 return FALSE;
387
388 irelend = internal_relocs + sec->reloc_count;
389
390 /* Get the section contents. */
391 if (elf_section_data (sec)->this_hdr.contents != NULL)
392 contents = elf_section_data (sec)->this_hdr.contents;
393 else
394 {
395 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
396 goto error_return;
397 }
398
399 for (irel = internal_relocs; irel < irelend; irel++)
400 {
401 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
402 bfd_vma symaddr, reladdr, trampoff, toff, roff;
403 asection *tsec;
404 struct one_fixup *f;
405 bfd_size_type amt;
406 bfd_boolean is_branch;
407 struct elfNN_ia64_dyn_sym_info *dyn_i;
408 char symtype;
409
410 switch (r_type)
411 {
412 case R_IA64_PCREL21B:
413 case R_IA64_PCREL21BI:
414 case R_IA64_PCREL21M:
415 case R_IA64_PCREL21F:
416 /* In pass 1, all br relaxations are done. We can skip it. */
417 if (link_info->relax_pass == 1)
418 continue;
419 skip_relax_pass_0 = FALSE;
420 is_branch = TRUE;
421 break;
422
423 case R_IA64_PCREL60B:
424 /* We can't optimize brl to br in pass 0 since br relaxations
425 will increase the code size. Defer it to pass 1. */
426 if (link_info->relax_pass == 0)
427 {
428 skip_relax_pass_1 = FALSE;
429 continue;
430 }
431 is_branch = TRUE;
432 break;
433
434 case R_IA64_GPREL22:
435 /* Update max_short_sec/min_short_sec. */
436
437 case R_IA64_LTOFF22X:
438 case R_IA64_LDXMOV:
439 /* We can't relax ldx/mov in pass 0 since br relaxations will
440 increase the code size. Defer it to pass 1. */
441 if (link_info->relax_pass == 0)
442 {
443 skip_relax_pass_1 = FALSE;
444 continue;
445 }
446 is_branch = FALSE;
447 break;
448
449 default:
450 continue;
451 }
452
453 /* Get the value of the symbol referred to by the reloc. */
454 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
455 {
456 /* A local symbol. */
457 Elf_Internal_Sym *isym;
458
459 /* Read this BFD's local symbols. */
460 if (isymbuf == NULL)
461 {
462 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
463 if (isymbuf == NULL)
464 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
465 symtab_hdr->sh_info, 0,
466 NULL, NULL, NULL);
467 if (isymbuf == 0)
468 goto error_return;
469 }
470
471 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
472 if (isym->st_shndx == SHN_UNDEF)
473 continue; /* We can't do anything with undefined symbols. */
474 else if (isym->st_shndx == SHN_ABS)
475 tsec = bfd_abs_section_ptr;
476 else if (isym->st_shndx == SHN_COMMON)
477 tsec = bfd_com_section_ptr;
478 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
479 tsec = bfd_com_section_ptr;
480 else
481 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
482
483 toff = isym->st_value;
484 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
485 symtype = ELF_ST_TYPE (isym->st_info);
486 }
487 else
488 {
489 unsigned long indx;
490 struct elf_link_hash_entry *h;
491
492 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
493 h = elf_sym_hashes (abfd)[indx];
494 BFD_ASSERT (h != NULL);
495
496 while (h->root.type == bfd_link_hash_indirect
497 || h->root.type == bfd_link_hash_warning)
498 h = (struct elf_link_hash_entry *) h->root.u.i.link;
499
500 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
501
502 /* For branches to dynamic symbols, we're interested instead
503 in a branch to the PLT entry. */
504 if (is_branch && dyn_i && dyn_i->want_plt2)
505 {
506 /* Internal branches shouldn't be sent to the PLT.
507 Leave this for now and we'll give an error later. */
508 if (r_type != R_IA64_PCREL21B)
509 continue;
510
511 tsec = ia64_info->root.splt;
512 toff = dyn_i->plt2_offset;
513 BFD_ASSERT (irel->r_addend == 0);
514 }
515
516 /* Can't do anything else with dynamic symbols. */
517 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
518 continue;
519
520 else
521 {
522 /* We can't do anything with undefined symbols. */
523 if (h->root.type == bfd_link_hash_undefined
524 || h->root.type == bfd_link_hash_undefweak)
525 continue;
526
527 tsec = h->root.u.def.section;
528 toff = h->root.u.def.value;
529 }
530
531 symtype = h->type;
532 }
533
534 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
535 {
536 /* At this stage in linking, no SEC_MERGE symbol has been
537 adjusted, so all references to such symbols need to be
538 passed through _bfd_merged_section_offset. (Later, in
539 relocate_section, all SEC_MERGE symbols *except* for
540 section symbols have been adjusted.)
541
542 gas may reduce relocations against symbols in SEC_MERGE
543 sections to a relocation against the section symbol when
544 the original addend was zero. When the reloc is against
545 a section symbol we should include the addend in the
546 offset passed to _bfd_merged_section_offset, since the
547 location of interest is the original symbol. On the
548 other hand, an access to "sym+addend" where "sym" is not
549 a section symbol should not include the addend; Such an
550 access is presumed to be an offset from "sym"; The
551 location of interest is just "sym". */
552 if (symtype == STT_SECTION)
553 toff += irel->r_addend;
554
555 toff = _bfd_merged_section_offset (abfd, &tsec,
556 elf_section_data (tsec)->sec_info,
557 toff);
558
559 if (symtype != STT_SECTION)
560 toff += irel->r_addend;
561 }
562 else
563 toff += irel->r_addend;
564
565 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
566
567 roff = irel->r_offset;
568
569 if (is_branch)
570 {
571 bfd_signed_vma offset;
572
573 reladdr = (sec->output_section->vma
574 + sec->output_offset
575 + roff) & (bfd_vma) -4;
576
577 /* The .plt section is aligned at 32byte and the .text section
578 is aligned at 64byte. The .text section is right after the
579 .plt section. After the first relaxation pass, linker may
580 increase the gap between the .plt and .text sections up
581 to 32byte. We assume linker will always insert 32byte
582 between the .plt and .text sections after the first
583 relaxation pass. */
584 if (tsec == ia64_info->root.splt)
585 offset = -0x1000000 + 32;
586 else
587 offset = -0x1000000;
588
589 /* If the branch is in range, no need to do anything. */
590 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
591 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
592 {
593 /* If the 60-bit branch is in 21-bit range, optimize it. */
594 if (r_type == R_IA64_PCREL60B)
595 {
596 ia64_elf_relax_brl (contents, roff);
597
598 irel->r_info
599 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
600 R_IA64_PCREL21B);
601
602 /* If the original relocation offset points to slot
603 1, change it to slot 2. */
604 if ((irel->r_offset & 3) == 1)
605 irel->r_offset += 1;
606
607 changed_contents = TRUE;
608 changed_relocs = TRUE;
609 }
610
611 continue;
612 }
613 else if (r_type == R_IA64_PCREL60B)
614 continue;
615 else if (ia64_elf_relax_br (contents, roff))
616 {
617 irel->r_info
618 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
619 R_IA64_PCREL60B);
620
621 /* Make the relocation offset point to slot 1. */
622 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
623
624 changed_contents = TRUE;
625 changed_relocs = TRUE;
626 continue;
627 }
628
629 /* We can't put a trampoline in a .init/.fini section. Issue
630 an error. */
631 if (strcmp (sec->output_section->name, ".init") == 0
632 || strcmp (sec->output_section->name, ".fini") == 0)
633 {
634 _bfd_error_handler
635 /* xgettext:c-format */
636 (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';"
637 " please use brl or indirect branch"),
638 sec->owner, (uint64_t) roff, sec);
639 bfd_set_error (bfd_error_bad_value);
640 goto error_return;
641 }
642
643 /* If the branch and target are in the same section, you've
644 got one honking big section and we can't help you unless
645 you are branching backwards. You'll get an error message
646 later. */
647 if (tsec == sec && toff > roff)
648 continue;
649
650 /* Look for an existing fixup to this address. */
651 for (f = fixups; f ; f = f->next)
652 if (f->tsec == tsec && f->toff == toff)
653 break;
654
655 if (f == NULL)
656 {
657 /* Two alternatives: If it's a branch to a PLT entry, we can
658 make a copy of the FULL_PLT entry. Otherwise, we'll have
659 to use a `brl' insn to get where we're going. */
660
661 size_t size;
662
663 if (tsec == ia64_info->root.splt)
664 size = sizeof (plt_full_entry);
665 else
666 size = oor_branch_size;
667
668 /* Resize the current section to make room for the new branch. */
669 trampoff = (sec->size + 15) & (bfd_vma) -16;
670
671 /* If trampoline is out of range, there is nothing we
672 can do. */
673 offset = trampoff - (roff & (bfd_vma) -4);
674 if (offset < -0x1000000 || offset > 0x0FFFFF0)
675 continue;
676
677 amt = trampoff + size;
678 contents = (bfd_byte *) bfd_realloc (contents, amt);
679 if (contents == NULL)
680 goto error_return;
681 sec->size = amt;
682
683 if (tsec == ia64_info->root.splt)
684 {
685 memcpy (contents + trampoff, plt_full_entry, size);
686
687 /* Hijack the old relocation for use as the PLTOFF reloc. */
688 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
689 R_IA64_PLTOFF22);
690 irel->r_offset = trampoff;
691 }
692 else
693 {
694 if (size == sizeof (oor_ip))
695 {
696 memcpy (contents + trampoff, oor_ip, size);
697 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
698 R_IA64_PCREL64I);
699 irel->r_addend -= 16;
700 irel->r_offset = trampoff + 2;
701 }
702 else
703 {
704 memcpy (contents + trampoff, oor_brl, size);
705 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
706 R_IA64_PCREL60B);
707 irel->r_offset = trampoff + 2;
708 }
709
710 }
711
712 /* Record the fixup so we don't do it again this section. */
713 f = (struct one_fixup *)
714 bfd_malloc ((bfd_size_type) sizeof (*f));
715 f->next = fixups;
716 f->tsec = tsec;
717 f->toff = toff;
718 f->trampoff = trampoff;
719 fixups = f;
720 }
721 else
722 {
723 /* If trampoline is out of range, there is nothing we
724 can do. */
725 offset = f->trampoff - (roff & (bfd_vma) -4);
726 if (offset < -0x1000000 || offset > 0x0FFFFF0)
727 continue;
728
729 /* Nop out the reloc, since we're finalizing things here. */
730 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
731 }
732
733 /* Fix up the existing branch to hit the trampoline. */
734 if (ia64_elf_install_value (contents + roff, offset, r_type)
735 != bfd_reloc_ok)
736 goto error_return;
737
738 changed_contents = TRUE;
739 changed_relocs = TRUE;
740 }
741 else
742 {
743 /* Fetch the gp. */
744 if (gp == 0)
745 {
746 bfd *obfd = sec->output_section->owner;
747 gp = _bfd_get_gp_value (obfd);
748 if (gp == 0)
749 {
750 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
751 goto error_return;
752 gp = _bfd_get_gp_value (obfd);
753 }
754 }
755
756 /* If the data is out of range, do nothing. */
757 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
758 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
759 continue;
760
761 if (r_type == R_IA64_GPREL22)
762 elfNN_ia64_update_short_info (tsec->output_section,
763 tsec->output_offset + toff,
764 ia64_info);
765 else if (r_type == R_IA64_LTOFF22X)
766 {
767 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
768 R_IA64_GPREL22);
769 changed_relocs = TRUE;
770 if (dyn_i->want_gotx)
771 {
772 dyn_i->want_gotx = 0;
773 changed_got |= !dyn_i->want_got;
774 }
775
776 elfNN_ia64_update_short_info (tsec->output_section,
777 tsec->output_offset + toff,
778 ia64_info);
779 }
780 else
781 {
782 ia64_elf_relax_ldxmov (contents, roff);
783 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
784 changed_contents = TRUE;
785 changed_relocs = TRUE;
786 }
787 }
788 }
789
790 /* ??? If we created fixups, this may push the code segment large
791 enough that the data segment moves, which will change the GP.
792 Reset the GP so that we re-calculate next round. We need to
793 do this at the _beginning_ of the next round; now will not do. */
794
795 /* Clean up and go home. */
796 while (fixups)
797 {
798 struct one_fixup *f = fixups;
799 fixups = fixups->next;
800 free (f);
801 }
802
803 if (isymbuf != NULL
804 && symtab_hdr->contents != (unsigned char *) isymbuf)
805 {
806 if (! link_info->keep_memory)
807 free (isymbuf);
808 else
809 {
810 /* Cache the symbols for elf_link_input_bfd. */
811 symtab_hdr->contents = (unsigned char *) isymbuf;
812 }
813 }
814
815 if (contents != NULL
816 && elf_section_data (sec)->this_hdr.contents != contents)
817 {
818 if (!changed_contents && !link_info->keep_memory)
819 free (contents);
820 else
821 {
822 /* Cache the section contents for elf_link_input_bfd. */
823 elf_section_data (sec)->this_hdr.contents = contents;
824 }
825 }
826
827 if (elf_section_data (sec)->relocs != internal_relocs)
828 {
829 if (!changed_relocs)
830 free (internal_relocs);
831 else
832 elf_section_data (sec)->relocs = internal_relocs;
833 }
834
835 if (changed_got)
836 {
837 struct elfNN_ia64_allocate_data data;
838 data.info = link_info;
839 data.ofs = 0;
840 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
841
842 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
843 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
844 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
845 ia64_info->root.sgot->size = data.ofs;
846
847 if (ia64_info->root.dynamic_sections_created
848 && ia64_info->root.srelgot != NULL)
849 {
850 /* Resize .rela.got. */
851 ia64_info->root.srelgot->size = 0;
852 if (bfd_link_pic (link_info)
853 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
854 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
855 data.only_got = TRUE;
856 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
857 &data);
858 }
859 }
860
861 if (link_info->relax_pass == 0)
862 {
863 /* Pass 0 is only needed to relax br. */
864 sec->skip_relax_pass_0 = skip_relax_pass_0;
865 sec->skip_relax_pass_1 = skip_relax_pass_1;
866 }
867
868 *again = changed_contents || changed_relocs;
869 return TRUE;
870
871 error_return:
872 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
873 free (isymbuf);
874 if (contents != NULL
875 && elf_section_data (sec)->this_hdr.contents != contents)
876 free (contents);
877 if (internal_relocs != NULL
878 && elf_section_data (sec)->relocs != internal_relocs)
879 free (internal_relocs);
880 return FALSE;
881 }
882 #undef skip_relax_pass_0
883 #undef skip_relax_pass_1
884 \f
885 /* Return TRUE if NAME is an unwind table section name. */
886
887 static inline bfd_boolean
888 is_unwind_section_name (bfd *abfd, const char *name)
889 {
890 if (elfNN_ia64_hpux_vec (abfd->xvec)
891 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
892 return FALSE;
893
894 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
895 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
896 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
897 }
898
899 /* Handle an IA-64 specific section when reading an object file. This
900 is called when bfd_section_from_shdr finds a section with an unknown
901 type. */
902
903 static bfd_boolean
904 elfNN_ia64_section_from_shdr (bfd *abfd,
905 Elf_Internal_Shdr *hdr,
906 const char *name,
907 int shindex)
908 {
909 /* There ought to be a place to keep ELF backend specific flags, but
910 at the moment there isn't one. We just keep track of the
911 sections by their name, instead. Fortunately, the ABI gives
912 suggested names for all the MIPS specific sections, so we will
913 probably get away with this. */
914 switch (hdr->sh_type)
915 {
916 case SHT_IA_64_UNWIND:
917 case SHT_IA_64_HP_OPT_ANOT:
918 break;
919
920 case SHT_IA_64_EXT:
921 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
922 return FALSE;
923 break;
924
925 default:
926 return FALSE;
927 }
928
929 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
930 return FALSE;
931
932 return TRUE;
933 }
934
935 /* Convert IA-64 specific section flags to bfd internal section flags. */
936
937 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
938 flag. */
939
940 static bfd_boolean
941 elfNN_ia64_section_flags (flagword *flags,
942 const Elf_Internal_Shdr *hdr)
943 {
944 if (hdr->sh_flags & SHF_IA_64_SHORT)
945 *flags |= SEC_SMALL_DATA;
946
947 return TRUE;
948 }
949
950 /* Set the correct type for an IA-64 ELF section. We do this by the
951 section name, which is a hack, but ought to work. */
952
953 static bfd_boolean
954 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
955 asection *sec)
956 {
957 const char *name;
958
959 name = bfd_section_name (sec);
960
961 if (is_unwind_section_name (abfd, name))
962 {
963 /* We don't have the sections numbered at this point, so sh_info
964 is set later, in elfNN_ia64_final_write_processing. */
965 hdr->sh_type = SHT_IA_64_UNWIND;
966 hdr->sh_flags |= SHF_LINK_ORDER;
967 }
968 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
969 hdr->sh_type = SHT_IA_64_EXT;
970 else if (strcmp (name, ".HP.opt_annot") == 0)
971 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
972 else if (strcmp (name, ".reloc") == 0)
973 /* This is an ugly, but unfortunately necessary hack that is
974 needed when producing EFI binaries on IA-64. It tells
975 elf.c:elf_fake_sections() not to consider ".reloc" as a section
976 containing ELF relocation info. We need this hack in order to
977 be able to generate ELF binaries that can be translated into
978 EFI applications (which are essentially COFF objects). Those
979 files contain a COFF ".reloc" section inside an ELFNN object,
980 which would normally cause BFD to segfault because it would
981 attempt to interpret this section as containing relocation
982 entries for section "oc". With this hack enabled, ".reloc"
983 will be treated as a normal data section, which will avoid the
984 segfault. However, you won't be able to create an ELFNN binary
985 with a section named "oc" that needs relocations, but that's
986 the kind of ugly side-effects you get when detecting section
987 types based on their names... In practice, this limitation is
988 unlikely to bite. */
989 hdr->sh_type = SHT_PROGBITS;
990
991 if (sec->flags & SEC_SMALL_DATA)
992 hdr->sh_flags |= SHF_IA_64_SHORT;
993
994 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
995
996 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
997 hdr->sh_flags |= SHF_IA_64_HP_TLS;
998
999 return TRUE;
1000 }
1001
1002 /* The final processing done just before writing out an IA-64 ELF
1003 object file. */
1004
1005 static bfd_boolean
1006 elfNN_ia64_final_write_processing (bfd *abfd)
1007 {
1008 Elf_Internal_Shdr *hdr;
1009 asection *s;
1010
1011 for (s = abfd->sections; s; s = s->next)
1012 {
1013 hdr = &elf_section_data (s)->this_hdr;
1014 switch (hdr->sh_type)
1015 {
1016 case SHT_IA_64_UNWIND:
1017 /* The IA-64 processor-specific ABI requires setting sh_link
1018 to the unwind section, whereas HP-UX requires sh_info to
1019 do so. For maximum compatibility, we'll set both for
1020 now... */
1021 hdr->sh_info = hdr->sh_link;
1022 break;
1023 }
1024 }
1025
1026 if (! elf_flags_init (abfd))
1027 {
1028 unsigned long flags = 0;
1029
1030 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1031 flags |= EF_IA_64_BE;
1032 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1033 flags |= EF_IA_64_ABI64;
1034
1035 elf_elfheader(abfd)->e_flags = flags;
1036 elf_flags_init (abfd) = TRUE;
1037 }
1038 return _bfd_elf_final_write_processing (abfd);
1039 }
1040
1041 /* Hook called by the linker routine which adds symbols from an object
1042 file. We use it to put .comm items in .sbss, and not .bss. */
1043
1044 static bfd_boolean
1045 elfNN_ia64_add_symbol_hook (bfd *abfd,
1046 struct bfd_link_info *info,
1047 Elf_Internal_Sym *sym,
1048 const char **namep ATTRIBUTE_UNUSED,
1049 flagword *flagsp ATTRIBUTE_UNUSED,
1050 asection **secp,
1051 bfd_vma *valp)
1052 {
1053 if (sym->st_shndx == SHN_COMMON
1054 && !bfd_link_relocatable (info)
1055 && sym->st_size <= elf_gp_size (abfd))
1056 {
1057 /* Common symbols less than or equal to -G nn bytes are
1058 automatically put into .sbss. */
1059
1060 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1061
1062 if (scomm == NULL)
1063 {
1064 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1065 (SEC_ALLOC
1066 | SEC_IS_COMMON
1067 | SEC_LINKER_CREATED));
1068 if (scomm == NULL)
1069 return FALSE;
1070 }
1071
1072 *secp = scomm;
1073 *valp = sym->st_size;
1074 }
1075
1076 return TRUE;
1077 }
1078
1079 /* Return the number of additional phdrs we will need. */
1080
1081 static int
1082 elfNN_ia64_additional_program_headers (bfd *abfd,
1083 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1084 {
1085 asection *s;
1086 int ret = 0;
1087
1088 /* See if we need a PT_IA_64_ARCHEXT segment. */
1089 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1090 if (s && (s->flags & SEC_LOAD))
1091 ++ret;
1092
1093 /* Count how many PT_IA_64_UNWIND segments we need. */
1094 for (s = abfd->sections; s; s = s->next)
1095 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1096 ++ret;
1097
1098 return ret;
1099 }
1100
1101 static bfd_boolean
1102 elfNN_ia64_modify_segment_map (bfd *abfd,
1103 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1104 {
1105 struct elf_segment_map *m, **pm;
1106 Elf_Internal_Shdr *hdr;
1107 asection *s;
1108
1109 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1110 all PT_LOAD segments. */
1111 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1112 if (s && (s->flags & SEC_LOAD))
1113 {
1114 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1115 if (m->p_type == PT_IA_64_ARCHEXT)
1116 break;
1117 if (m == NULL)
1118 {
1119 m = ((struct elf_segment_map *)
1120 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1121 if (m == NULL)
1122 return FALSE;
1123
1124 m->p_type = PT_IA_64_ARCHEXT;
1125 m->count = 1;
1126 m->sections[0] = s;
1127
1128 /* We want to put it after the PHDR and INTERP segments. */
1129 pm = &elf_seg_map (abfd);
1130 while (*pm != NULL
1131 && ((*pm)->p_type == PT_PHDR
1132 || (*pm)->p_type == PT_INTERP))
1133 pm = &(*pm)->next;
1134
1135 m->next = *pm;
1136 *pm = m;
1137 }
1138 }
1139
1140 /* Install PT_IA_64_UNWIND segments, if needed. */
1141 for (s = abfd->sections; s; s = s->next)
1142 {
1143 hdr = &elf_section_data (s)->this_hdr;
1144 if (hdr->sh_type != SHT_IA_64_UNWIND)
1145 continue;
1146
1147 if (s && (s->flags & SEC_LOAD))
1148 {
1149 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1150 if (m->p_type == PT_IA_64_UNWIND)
1151 {
1152 int i;
1153
1154 /* Look through all sections in the unwind segment
1155 for a match since there may be multiple sections
1156 to a segment. */
1157 for (i = m->count - 1; i >= 0; --i)
1158 if (m->sections[i] == s)
1159 break;
1160
1161 if (i >= 0)
1162 break;
1163 }
1164
1165 if (m == NULL)
1166 {
1167 m = ((struct elf_segment_map *)
1168 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1169 if (m == NULL)
1170 return FALSE;
1171
1172 m->p_type = PT_IA_64_UNWIND;
1173 m->count = 1;
1174 m->sections[0] = s;
1175 m->next = NULL;
1176
1177 /* We want to put it last. */
1178 pm = &elf_seg_map (abfd);
1179 while (*pm != NULL)
1180 pm = &(*pm)->next;
1181 *pm = m;
1182 }
1183 }
1184 }
1185
1186 return TRUE;
1187 }
1188
1189 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1190 the input sections for each output section in the segment and testing
1191 for SHF_IA_64_NORECOV on each. */
1192
1193 static bfd_boolean
1194 elfNN_ia64_modify_headers (bfd *abfd, struct bfd_link_info *info)
1195 {
1196 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1197 struct elf_segment_map *m;
1198 Elf_Internal_Phdr *p;
1199
1200 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1201 if (m->p_type == PT_LOAD)
1202 {
1203 int i;
1204 for (i = m->count - 1; i >= 0; --i)
1205 {
1206 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1207
1208 while (order != NULL)
1209 {
1210 if (order->type == bfd_indirect_link_order)
1211 {
1212 asection *is = order->u.indirect.section;
1213 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1214 if (flags & SHF_IA_64_NORECOV)
1215 {
1216 p->p_flags |= PF_IA_64_NORECOV;
1217 goto found;
1218 }
1219 }
1220 order = order->next;
1221 }
1222 }
1223 found:;
1224 }
1225
1226 return _bfd_elf_modify_headers (abfd, info);
1227 }
1228
1229 /* According to the Tahoe assembler spec, all labels starting with a
1230 '.' are local. */
1231
1232 static bfd_boolean
1233 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1234 const char *name)
1235 {
1236 return name[0] == '.';
1237 }
1238
1239 /* Should we do dynamic things to this symbol? */
1240
1241 static bfd_boolean
1242 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1243 struct bfd_link_info *info, int r_type)
1244 {
1245 bfd_boolean ignore_protected
1246 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1247 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1248
1249 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1250 }
1251 \f
1252 static struct bfd_hash_entry*
1253 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1254 struct bfd_hash_table *table,
1255 const char *string)
1256 {
1257 struct elfNN_ia64_link_hash_entry *ret;
1258 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1259
1260 /* Allocate the structure if it has not already been allocated by a
1261 subclass. */
1262 if (!ret)
1263 ret = bfd_hash_allocate (table, sizeof (*ret));
1264
1265 if (!ret)
1266 return 0;
1267
1268 /* Call the allocation method of the superclass. */
1269 ret = ((struct elfNN_ia64_link_hash_entry *)
1270 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1271 table, string));
1272
1273 ret->info = NULL;
1274 ret->count = 0;
1275 ret->sorted_count = 0;
1276 ret->size = 0;
1277 return (struct bfd_hash_entry *) ret;
1278 }
1279
1280 static void
1281 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1282 struct elf_link_hash_entry *xdir,
1283 struct elf_link_hash_entry *xind)
1284 {
1285 struct elfNN_ia64_link_hash_entry *dir, *ind;
1286
1287 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1288 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1289
1290 /* Copy down any references that we may have already seen to the
1291 symbol which just became indirect. */
1292
1293 if (dir->root.versioned != versioned_hidden)
1294 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1295 dir->root.ref_regular |= ind->root.ref_regular;
1296 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1297 dir->root.needs_plt |= ind->root.needs_plt;
1298
1299 if (ind->root.root.type != bfd_link_hash_indirect)
1300 return;
1301
1302 /* Copy over the got and plt data. This would have been done
1303 by check_relocs. */
1304
1305 if (ind->info != NULL)
1306 {
1307 struct elfNN_ia64_dyn_sym_info *dyn_i;
1308 unsigned int count;
1309
1310 if (dir->info)
1311 free (dir->info);
1312
1313 dir->info = ind->info;
1314 dir->count = ind->count;
1315 dir->sorted_count = ind->sorted_count;
1316 dir->size = ind->size;
1317
1318 ind->info = NULL;
1319 ind->count = 0;
1320 ind->sorted_count = 0;
1321 ind->size = 0;
1322
1323 /* Fix up the dyn_sym_info pointers to the global symbol. */
1324 for (count = dir->count, dyn_i = dir->info;
1325 count != 0;
1326 count--, dyn_i++)
1327 dyn_i->h = &dir->root;
1328 }
1329
1330 /* Copy over the dynindx. */
1331
1332 if (ind->root.dynindx != -1)
1333 {
1334 if (dir->root.dynindx != -1)
1335 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1336 dir->root.dynstr_index);
1337 dir->root.dynindx = ind->root.dynindx;
1338 dir->root.dynstr_index = ind->root.dynstr_index;
1339 ind->root.dynindx = -1;
1340 ind->root.dynstr_index = 0;
1341 }
1342 }
1343
1344 static void
1345 elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1346 struct elf_link_hash_entry *xh,
1347 bfd_boolean force_local)
1348 {
1349 struct elfNN_ia64_link_hash_entry *h;
1350 struct elfNN_ia64_dyn_sym_info *dyn_i;
1351 unsigned int count;
1352
1353 h = (struct elfNN_ia64_link_hash_entry *)xh;
1354
1355 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1356
1357 for (count = h->count, dyn_i = h->info;
1358 count != 0;
1359 count--, dyn_i++)
1360 {
1361 dyn_i->want_plt2 = 0;
1362 dyn_i->want_plt = 0;
1363 }
1364 }
1365
1366 /* Compute a hash of a local hash entry. */
1367
1368 static hashval_t
1369 elfNN_ia64_local_htab_hash (const void *ptr)
1370 {
1371 struct elfNN_ia64_local_hash_entry *entry
1372 = (struct elfNN_ia64_local_hash_entry *) ptr;
1373
1374 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1375 }
1376
1377 /* Compare local hash entries. */
1378
1379 static int
1380 elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1381 {
1382 struct elfNN_ia64_local_hash_entry *entry1
1383 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1384 struct elfNN_ia64_local_hash_entry *entry2
1385 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1386
1387 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1388 }
1389
1390 /* Free the global elfNN_ia64_dyn_sym_info array. */
1391
1392 static bfd_boolean
1393 elfNN_ia64_global_dyn_info_free (void **xentry,
1394 void * unused ATTRIBUTE_UNUSED)
1395 {
1396 struct elfNN_ia64_link_hash_entry *entry
1397 = (struct elfNN_ia64_link_hash_entry *) xentry;
1398
1399 if (entry->info)
1400 {
1401 free (entry->info);
1402 entry->info = NULL;
1403 entry->count = 0;
1404 entry->sorted_count = 0;
1405 entry->size = 0;
1406 }
1407
1408 return TRUE;
1409 }
1410
1411 /* Free the local elfNN_ia64_dyn_sym_info array. */
1412
1413 static bfd_boolean
1414 elfNN_ia64_local_dyn_info_free (void **slot,
1415 void * unused ATTRIBUTE_UNUSED)
1416 {
1417 struct elfNN_ia64_local_hash_entry *entry
1418 = (struct elfNN_ia64_local_hash_entry *) *slot;
1419
1420 if (entry->info)
1421 {
1422 free (entry->info);
1423 entry->info = NULL;
1424 entry->count = 0;
1425 entry->sorted_count = 0;
1426 entry->size = 0;
1427 }
1428
1429 return TRUE;
1430 }
1431
1432 /* Destroy IA-64 linker hash table. */
1433
1434 static void
1435 elfNN_ia64_link_hash_table_free (bfd *obfd)
1436 {
1437 struct elfNN_ia64_link_hash_table *ia64_info
1438 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
1439 if (ia64_info->loc_hash_table)
1440 {
1441 htab_traverse (ia64_info->loc_hash_table,
1442 elfNN_ia64_local_dyn_info_free, NULL);
1443 htab_delete (ia64_info->loc_hash_table);
1444 }
1445 if (ia64_info->loc_hash_memory)
1446 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1447 elf_link_hash_traverse (&ia64_info->root,
1448 elfNN_ia64_global_dyn_info_free, NULL);
1449 _bfd_elf_link_hash_table_free (obfd);
1450 }
1451
1452 /* Create the derived linker hash table. The IA-64 ELF port uses this
1453 derived hash table to keep information specific to the IA-64 ElF
1454 linker (without using static variables). */
1455
1456 static struct bfd_link_hash_table *
1457 elfNN_ia64_hash_table_create (bfd *abfd)
1458 {
1459 struct elfNN_ia64_link_hash_table *ret;
1460
1461 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1462 if (!ret)
1463 return NULL;
1464
1465 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1466 elfNN_ia64_new_elf_hash_entry,
1467 sizeof (struct elfNN_ia64_link_hash_entry),
1468 IA64_ELF_DATA))
1469 {
1470 free (ret);
1471 return NULL;
1472 }
1473
1474 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1475 elfNN_ia64_local_htab_eq, NULL);
1476 ret->loc_hash_memory = objalloc_create ();
1477 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1478 {
1479 elfNN_ia64_link_hash_table_free (abfd);
1480 return NULL;
1481 }
1482 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
1483
1484 return &ret->root.root;
1485 }
1486
1487 /* Traverse both local and global hash tables. */
1488
1489 struct elfNN_ia64_dyn_sym_traverse_data
1490 {
1491 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1492 void * data;
1493 };
1494
1495 static bfd_boolean
1496 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1497 void * xdata)
1498 {
1499 struct elfNN_ia64_link_hash_entry *entry
1500 = (struct elfNN_ia64_link_hash_entry *) xentry;
1501 struct elfNN_ia64_dyn_sym_traverse_data *data
1502 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1503 struct elfNN_ia64_dyn_sym_info *dyn_i;
1504 unsigned int count;
1505
1506 for (count = entry->count, dyn_i = entry->info;
1507 count != 0;
1508 count--, dyn_i++)
1509 if (! (*data->func) (dyn_i, data->data))
1510 return FALSE;
1511 return TRUE;
1512 }
1513
1514 static bfd_boolean
1515 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1516 {
1517 struct elfNN_ia64_local_hash_entry *entry
1518 = (struct elfNN_ia64_local_hash_entry *) *slot;
1519 struct elfNN_ia64_dyn_sym_traverse_data *data
1520 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1521 struct elfNN_ia64_dyn_sym_info *dyn_i;
1522 unsigned int count;
1523
1524 for (count = entry->count, dyn_i = entry->info;
1525 count != 0;
1526 count--, dyn_i++)
1527 if (! (*data->func) (dyn_i, data->data))
1528 return FALSE;
1529 return TRUE;
1530 }
1531
1532 static void
1533 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1534 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1535 void * data)
1536 {
1537 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1538
1539 xdata.func = func;
1540 xdata.data = data;
1541
1542 elf_link_hash_traverse (&ia64_info->root,
1543 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1544 htab_traverse (ia64_info->loc_hash_table,
1545 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1546 }
1547 \f
1548 static bfd_boolean
1549 elfNN_ia64_create_dynamic_sections (bfd *abfd,
1550 struct bfd_link_info *info)
1551 {
1552 struct elfNN_ia64_link_hash_table *ia64_info;
1553 asection *s;
1554
1555 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1556 return FALSE;
1557
1558 ia64_info = elfNN_ia64_hash_table (info);
1559 if (ia64_info == NULL)
1560 return FALSE;
1561
1562 {
1563 flagword flags = bfd_section_flags (ia64_info->root.sgot);
1564 bfd_set_section_flags (ia64_info->root.sgot, SEC_SMALL_DATA | flags);
1565 /* The .got section is always aligned at 8 bytes. */
1566 if (!bfd_set_section_alignment (ia64_info->root.sgot, 3))
1567 return FALSE;
1568 }
1569
1570 if (!get_pltoff (abfd, info, ia64_info))
1571 return FALSE;
1572
1573 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1574 (SEC_ALLOC | SEC_LOAD
1575 | SEC_HAS_CONTENTS
1576 | SEC_IN_MEMORY
1577 | SEC_LINKER_CREATED
1578 | SEC_READONLY));
1579 if (s == NULL
1580 || !bfd_set_section_alignment (s, LOG_SECTION_ALIGN))
1581 return FALSE;
1582 ia64_info->rel_pltoff_sec = s;
1583
1584 return TRUE;
1585 }
1586
1587 /* Find and/or create a hash entry for local symbol. */
1588 static struct elfNN_ia64_local_hash_entry *
1589 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1590 bfd *abfd, const Elf_Internal_Rela *rel,
1591 bfd_boolean create)
1592 {
1593 struct elfNN_ia64_local_hash_entry e, *ret;
1594 asection *sec = abfd->sections;
1595 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1596 ELFNN_R_SYM (rel->r_info));
1597 void **slot;
1598
1599 e.id = sec->id;
1600 e.r_sym = ELFNN_R_SYM (rel->r_info);
1601 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1602 create ? INSERT : NO_INSERT);
1603
1604 if (!slot)
1605 return NULL;
1606
1607 if (*slot)
1608 return (struct elfNN_ia64_local_hash_entry *) *slot;
1609
1610 ret = (struct elfNN_ia64_local_hash_entry *)
1611 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1612 sizeof (struct elfNN_ia64_local_hash_entry));
1613 if (ret)
1614 {
1615 memset (ret, 0, sizeof (*ret));
1616 ret->id = sec->id;
1617 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1618 *slot = ret;
1619 }
1620 return ret;
1621 }
1622
1623 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1624
1625 static int
1626 addend_compare (const void *xp, const void *yp)
1627 {
1628 const struct elfNN_ia64_dyn_sym_info *x
1629 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1630 const struct elfNN_ia64_dyn_sym_info *y
1631 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1632
1633 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1634 }
1635
1636 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1637
1638 static unsigned int
1639 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1640 unsigned int count)
1641 {
1642 bfd_vma curr, prev, got_offset;
1643 unsigned int i, kept, dupes, diff, dest, src, len;
1644
1645 qsort (info, count, sizeof (*info), addend_compare);
1646
1647 /* Find the first duplicate. */
1648 prev = info [0].addend;
1649 got_offset = info [0].got_offset;
1650 for (i = 1; i < count; i++)
1651 {
1652 curr = info [i].addend;
1653 if (curr == prev)
1654 {
1655 /* For duplicates, make sure that GOT_OFFSET is valid. */
1656 if (got_offset == (bfd_vma) -1)
1657 got_offset = info [i].got_offset;
1658 break;
1659 }
1660 got_offset = info [i].got_offset;
1661 prev = curr;
1662 }
1663
1664 /* We may move a block of elements to here. */
1665 dest = i++;
1666
1667 /* Remove duplicates. */
1668 if (i < count)
1669 {
1670 while (i < count)
1671 {
1672 /* For duplicates, make sure that the kept one has a valid
1673 got_offset. */
1674 kept = dest - 1;
1675 if (got_offset != (bfd_vma) -1)
1676 info [kept].got_offset = got_offset;
1677
1678 curr = info [i].addend;
1679 got_offset = info [i].got_offset;
1680
1681 /* Move a block of elements whose first one is different from
1682 the previous. */
1683 if (curr == prev)
1684 {
1685 for (src = i + 1; src < count; src++)
1686 {
1687 if (info [src].addend != curr)
1688 break;
1689 /* For duplicates, make sure that GOT_OFFSET is
1690 valid. */
1691 if (got_offset == (bfd_vma) -1)
1692 got_offset = info [src].got_offset;
1693 }
1694
1695 /* Make sure that the kept one has a valid got_offset. */
1696 if (got_offset != (bfd_vma) -1)
1697 info [kept].got_offset = got_offset;
1698 }
1699 else
1700 src = i;
1701
1702 if (src >= count)
1703 break;
1704
1705 /* Find the next duplicate. SRC will be kept. */
1706 prev = info [src].addend;
1707 got_offset = info [src].got_offset;
1708 for (dupes = src + 1; dupes < count; dupes ++)
1709 {
1710 curr = info [dupes].addend;
1711 if (curr == prev)
1712 {
1713 /* Make sure that got_offset is valid. */
1714 if (got_offset == (bfd_vma) -1)
1715 got_offset = info [dupes].got_offset;
1716
1717 /* For duplicates, make sure that the kept one has
1718 a valid got_offset. */
1719 if (got_offset != (bfd_vma) -1)
1720 info [dupes - 1].got_offset = got_offset;
1721 break;
1722 }
1723 got_offset = info [dupes].got_offset;
1724 prev = curr;
1725 }
1726
1727 /* How much to move. */
1728 len = dupes - src;
1729 i = dupes + 1;
1730
1731 if (len == 1 && dupes < count)
1732 {
1733 /* If we only move 1 element, we combine it with the next
1734 one. There must be at least a duplicate. Find the
1735 next different one. */
1736 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1737 {
1738 if (info [diff].addend != curr)
1739 break;
1740 /* Make sure that got_offset is valid. */
1741 if (got_offset == (bfd_vma) -1)
1742 got_offset = info [diff].got_offset;
1743 }
1744
1745 /* Makre sure that the last duplicated one has an valid
1746 offset. */
1747 BFD_ASSERT (curr == prev);
1748 if (got_offset != (bfd_vma) -1)
1749 info [diff - 1].got_offset = got_offset;
1750
1751 if (diff < count)
1752 {
1753 /* Find the next duplicate. Track the current valid
1754 offset. */
1755 prev = info [diff].addend;
1756 got_offset = info [diff].got_offset;
1757 for (dupes = diff + 1; dupes < count; dupes ++)
1758 {
1759 curr = info [dupes].addend;
1760 if (curr == prev)
1761 {
1762 /* For duplicates, make sure that GOT_OFFSET
1763 is valid. */
1764 if (got_offset == (bfd_vma) -1)
1765 got_offset = info [dupes].got_offset;
1766 break;
1767 }
1768 got_offset = info [dupes].got_offset;
1769 prev = curr;
1770 diff++;
1771 }
1772
1773 len = diff - src + 1;
1774 i = diff + 1;
1775 }
1776 }
1777
1778 memmove (&info [dest], &info [src], len * sizeof (*info));
1779
1780 dest += len;
1781 }
1782
1783 count = dest;
1784 }
1785 else
1786 {
1787 /* When we get here, either there is no duplicate at all or
1788 the only duplicate is the last element. */
1789 if (dest < count)
1790 {
1791 /* If the last element is a duplicate, make sure that the
1792 kept one has a valid got_offset. We also update count. */
1793 if (got_offset != (bfd_vma) -1)
1794 info [dest - 1].got_offset = got_offset;
1795 count = dest;
1796 }
1797 }
1798
1799 return count;
1800 }
1801
1802 /* Find and/or create a descriptor for dynamic symbol info. This will
1803 vary based on global or local symbol, and the addend to the reloc.
1804
1805 We don't sort when inserting. Also, we sort and eliminate
1806 duplicates if there is an unsorted section. Typically, this will
1807 only happen once, because we do all insertions before lookups. We
1808 then use bsearch to do a lookup. This also allows lookups to be
1809 fast. So we have fast insertion (O(log N) due to duplicate check),
1810 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1811 Previously, all lookups were O(N) because of the use of the linked
1812 list and also all insertions were O(N) because of the check for
1813 duplicates. There are some complications here because the array
1814 size grows occasionally, which may add an O(N) factor, but this
1815 should be rare. Also, we free the excess array allocation, which
1816 requires a copy which is O(N), but this only happens once. */
1817
1818 static struct elfNN_ia64_dyn_sym_info *
1819 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1820 struct elf_link_hash_entry *h, bfd *abfd,
1821 const Elf_Internal_Rela *rel, bfd_boolean create)
1822 {
1823 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1824 unsigned int *count_p, *sorted_count_p, *size_p;
1825 unsigned int count, sorted_count, size;
1826 bfd_vma addend = rel ? rel->r_addend : 0;
1827 bfd_size_type amt;
1828
1829 if (h)
1830 {
1831 struct elfNN_ia64_link_hash_entry *global_h;
1832
1833 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1834 info_p = &global_h->info;
1835 count_p = &global_h->count;
1836 sorted_count_p = &global_h->sorted_count;
1837 size_p = &global_h->size;
1838 }
1839 else
1840 {
1841 struct elfNN_ia64_local_hash_entry *loc_h;
1842
1843 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1844 if (!loc_h)
1845 {
1846 BFD_ASSERT (!create);
1847 return NULL;
1848 }
1849
1850 info_p = &loc_h->info;
1851 count_p = &loc_h->count;
1852 sorted_count_p = &loc_h->sorted_count;
1853 size_p = &loc_h->size;
1854 }
1855
1856 count = *count_p;
1857 sorted_count = *sorted_count_p;
1858 size = *size_p;
1859 info = *info_p;
1860 if (create)
1861 {
1862 /* When we create the array, we don't check for duplicates,
1863 except in the previously sorted section if one exists, and
1864 against the last inserted entry. This allows insertions to
1865 be fast. */
1866 if (info)
1867 {
1868 if (sorted_count)
1869 {
1870 /* Try bsearch first on the sorted section. */
1871 key.addend = addend;
1872 dyn_i = bsearch (&key, info, sorted_count,
1873 sizeof (*info), addend_compare);
1874
1875 if (dyn_i)
1876 {
1877 return dyn_i;
1878 }
1879 }
1880
1881 /* Do a quick check for the last inserted entry. */
1882 dyn_i = info + count - 1;
1883 if (dyn_i->addend == addend)
1884 {
1885 return dyn_i;
1886 }
1887 }
1888
1889 if (size == 0)
1890 {
1891 /* It is the very first element. We create the array of size
1892 1. */
1893 size = 1;
1894 amt = size * sizeof (*info);
1895 info = bfd_malloc (amt);
1896 }
1897 else if (size <= count)
1898 {
1899 /* We double the array size every time when we reach the
1900 size limit. */
1901 size += size;
1902 amt = size * sizeof (*info);
1903 info = bfd_realloc (info, amt);
1904 }
1905 else
1906 goto has_space;
1907
1908 if (info == NULL)
1909 return NULL;
1910 *size_p = size;
1911 *info_p = info;
1912
1913 has_space:
1914 /* Append the new one to the array. */
1915 dyn_i = info + count;
1916 memset (dyn_i, 0, sizeof (*dyn_i));
1917 dyn_i->got_offset = (bfd_vma) -1;
1918 dyn_i->addend = addend;
1919
1920 /* We increment count only since the new ones are unsorted and
1921 may have duplicate. */
1922 (*count_p)++;
1923 }
1924 else
1925 {
1926 /* It is a lookup without insertion. Sort array if part of the
1927 array isn't sorted. */
1928 if (count != sorted_count)
1929 {
1930 count = sort_dyn_sym_info (info, count);
1931 *count_p = count;
1932 *sorted_count_p = count;
1933 }
1934
1935 /* Free unused memory. */
1936 if (size != count)
1937 {
1938 amt = count * sizeof (*info);
1939 info = bfd_malloc (amt);
1940 if (info != NULL)
1941 {
1942 memcpy (info, *info_p, amt);
1943 free (*info_p);
1944 *size_p = count;
1945 *info_p = info;
1946 }
1947 }
1948
1949 key.addend = addend;
1950 dyn_i = bsearch (&key, info, count,
1951 sizeof (*info), addend_compare);
1952 }
1953
1954 return dyn_i;
1955 }
1956
1957 static asection *
1958 get_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))
1973 return NULL;
1974
1975 got = ia64_info->root.sgot;
1976
1977 /* The .got section is always aligned at 8 bytes. */
1978 if (!bfd_set_section_alignment (got, 3))
1979 return NULL;
1980
1981 flags = bfd_section_flags (got);
1982 if (!bfd_set_section_flags (got, SEC_SMALL_DATA | flags))
1983 return NULL;
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
1994 static asection *
1995 get_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
2008 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
2009 (SEC_ALLOC
2010 | SEC_LOAD
2011 | SEC_HAS_CONTENTS
2012 | SEC_IN_MEMORY
2013 | (bfd_link_pie (info)
2014 ? 0 : SEC_READONLY)
2015 | SEC_LINKER_CREATED));
2016 if (!fptr
2017 || !bfd_set_section_alignment (fptr, 4))
2018 {
2019 BFD_ASSERT (0);
2020 return NULL;
2021 }
2022
2023 ia64_info->fptr_sec = fptr;
2024
2025 if (bfd_link_pie (info))
2026 {
2027 asection *fptr_rel;
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));
2034 if (fptr_rel == NULL
2035 || !bfd_set_section_alignment (fptr_rel, LOG_SECTION_ALIGN))
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
2048 static asection *
2049 get_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
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));
2070 if (!pltoff
2071 || !bfd_set_section_alignment (pltoff, 4))
2072 {
2073 BFD_ASSERT (0);
2074 return NULL;
2075 }
2076
2077 ia64_info->pltoff_sec = pltoff;
2078 }
2079
2080 return pltoff;
2081 }
2082
2083 static asection *
2084 get_reloc_section (bfd *abfd,
2085 struct elfNN_ia64_link_hash_table *ia64_info,
2086 asection *sec, bfd_boolean create)
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
2102 srel = bfd_get_linker_section (dynobj, srel_name);
2103 if (srel == NULL && create)
2104 {
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));
2111 if (srel == NULL
2112 || !bfd_set_section_alignment (srel, LOG_SECTION_ALIGN))
2113 return NULL;
2114 }
2115
2116 return srel;
2117 }
2118
2119 static bfd_boolean
2120 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2121 asection *srel, int type, bfd_boolean reltext)
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)
2134 return FALSE;
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 }
2142 rent->reltext = reltext;
2143 rent->count++;
2144
2145 return TRUE;
2146 }
2147
2148 static bfd_boolean
2149 elfNN_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;
2174 bfd_boolean maybe_dynamic;
2175
2176 if (bfd_link_relocatable (info))
2177 return TRUE;
2178
2179 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2180 ia64_info = elfNN_ia64_hash_table (info);
2181 if (ia64_info == NULL)
2182 return FALSE;
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 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2206 continue;
2207
2208 /* We can only get preliminary data on whether a symbol is
2209 locally or externally defined, as not all of the input files
2210 have yet been processed. Do something with what we know, as
2211 this may help reduce memory usage and processing time later. */
2212 maybe_dynamic = (h && ((!bfd_link_executable (info)
2213 && (!SYMBOLIC_BIND (info, h)
2214 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2215 || !h->def_regular
2216 || h->root.type == bfd_link_hash_defweak));
2217
2218 need_entry = 0;
2219 switch (ELFNN_R_TYPE (rel->r_info))
2220 {
2221 case R_IA64_TPREL64MSB:
2222 case R_IA64_TPREL64LSB:
2223 if (bfd_link_pic (info) || maybe_dynamic)
2224 need_entry = NEED_DYNREL;
2225 break;
2226
2227 case R_IA64_LTOFF_TPREL22:
2228 need_entry = NEED_TPREL;
2229 if (bfd_link_pic (info))
2230 info->flags |= DF_STATIC_TLS;
2231 break;
2232
2233 case R_IA64_DTPREL32MSB:
2234 case R_IA64_DTPREL32LSB:
2235 case R_IA64_DTPREL64MSB:
2236 case R_IA64_DTPREL64LSB:
2237 if (bfd_link_pic (info) || maybe_dynamic)
2238 need_entry = NEED_DYNREL;
2239 break;
2240
2241 case R_IA64_LTOFF_DTPREL22:
2242 need_entry = NEED_DTPREL;
2243 break;
2244
2245 case R_IA64_DTPMOD64MSB:
2246 case R_IA64_DTPMOD64LSB:
2247 if (bfd_link_pic (info) || maybe_dynamic)
2248 need_entry = NEED_DYNREL;
2249 break;
2250
2251 case R_IA64_LTOFF_DTPMOD22:
2252 need_entry = NEED_DTPMOD;
2253 break;
2254
2255 case R_IA64_LTOFF_FPTR22:
2256 case R_IA64_LTOFF_FPTR64I:
2257 case R_IA64_LTOFF_FPTR32MSB:
2258 case R_IA64_LTOFF_FPTR32LSB:
2259 case R_IA64_LTOFF_FPTR64MSB:
2260 case R_IA64_LTOFF_FPTR64LSB:
2261 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2262 break;
2263
2264 case R_IA64_FPTR64I:
2265 case R_IA64_FPTR32MSB:
2266 case R_IA64_FPTR32LSB:
2267 case R_IA64_FPTR64MSB:
2268 case R_IA64_FPTR64LSB:
2269 if (bfd_link_pic (info) || h)
2270 need_entry = NEED_FPTR | NEED_DYNREL;
2271 else
2272 need_entry = NEED_FPTR;
2273 break;
2274
2275 case R_IA64_LTOFF22:
2276 case R_IA64_LTOFF64I:
2277 need_entry = NEED_GOT;
2278 break;
2279
2280 case R_IA64_LTOFF22X:
2281 need_entry = NEED_GOTX;
2282 break;
2283
2284 case R_IA64_PLTOFF22:
2285 case R_IA64_PLTOFF64I:
2286 case R_IA64_PLTOFF64MSB:
2287 case R_IA64_PLTOFF64LSB:
2288 need_entry = NEED_PLTOFF;
2289 if (h)
2290 {
2291 if (maybe_dynamic)
2292 need_entry |= NEED_MIN_PLT;
2293 }
2294 else
2295 {
2296 (*info->callbacks->warning)
2297 (info, _("@pltoff reloc against local symbol"), 0,
2298 abfd, 0, (bfd_vma) 0);
2299 }
2300 break;
2301
2302 case R_IA64_PCREL21B:
2303 case R_IA64_PCREL60B:
2304 /* Depending on where this symbol is defined, we may or may not
2305 need a full plt entry. Only skip if we know we'll not need
2306 the entry -- static or symbolic, and the symbol definition
2307 has already been seen. */
2308 if (maybe_dynamic && rel->r_addend == 0)
2309 need_entry = NEED_FULL_PLT;
2310 break;
2311
2312 case R_IA64_IMM14:
2313 case R_IA64_IMM22:
2314 case R_IA64_IMM64:
2315 case R_IA64_DIR32MSB:
2316 case R_IA64_DIR32LSB:
2317 case R_IA64_DIR64MSB:
2318 case R_IA64_DIR64LSB:
2319 /* Shared objects will always need at least a REL relocation. */
2320 if (bfd_link_pic (info) || maybe_dynamic)
2321 need_entry = NEED_DYNREL;
2322 break;
2323
2324 case R_IA64_IPLTMSB:
2325 case R_IA64_IPLTLSB:
2326 /* Shared objects will always need at least a REL relocation. */
2327 if (bfd_link_pic (info) || maybe_dynamic)
2328 need_entry = NEED_DYNREL;
2329 break;
2330
2331 case R_IA64_PCREL22:
2332 case R_IA64_PCREL64I:
2333 case R_IA64_PCREL32MSB:
2334 case R_IA64_PCREL32LSB:
2335 case R_IA64_PCREL64MSB:
2336 case R_IA64_PCREL64LSB:
2337 if (maybe_dynamic)
2338 need_entry = NEED_DYNREL;
2339 break;
2340 }
2341
2342 if (!need_entry)
2343 continue;
2344
2345 if ((need_entry & NEED_FPTR) != 0
2346 && rel->r_addend)
2347 {
2348 (*info->callbacks->warning)
2349 (info, _("non-zero addend in @fptr reloc"), 0,
2350 abfd, 0, (bfd_vma) 0);
2351 }
2352
2353 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2354 return FALSE;
2355 }
2356
2357 /* Now, we only do lookup without insertion, which is very fast
2358 with the modified get_dyn_sym_info. */
2359 for (rel = relocs; rel < relend; ++rel)
2360 {
2361 struct elfNN_ia64_dyn_sym_info *dyn_i;
2362 int dynrel_type = R_IA64_NONE;
2363
2364 r_symndx = ELFNN_R_SYM (rel->r_info);
2365 if (r_symndx >= symtab_hdr->sh_info)
2366 {
2367 /* We're dealing with a global symbol -- find its hash entry
2368 and mark it as being referenced. */
2369 long indx = r_symndx - symtab_hdr->sh_info;
2370 h = elf_sym_hashes (abfd)[indx];
2371 while (h->root.type == bfd_link_hash_indirect
2372 || h->root.type == bfd_link_hash_warning)
2373 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2374
2375 /* PR15323, ref flags aren't set for references in the same
2376 object. */
2377 h->ref_regular = 1;
2378 }
2379 else
2380 h = NULL;
2381
2382 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2383 continue;
2384
2385 /* We can only get preliminary data on whether a symbol is
2386 locally or externally defined, as not all of the input files
2387 have yet been processed. Do something with what we know, as
2388 this may help reduce memory usage and processing time later. */
2389 maybe_dynamic = (h && ((!bfd_link_executable (info)
2390 && (!SYMBOLIC_BIND (info, h)
2391 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2392 || !h->def_regular
2393 || h->root.type == bfd_link_hash_defweak));
2394
2395 need_entry = 0;
2396 switch (ELFNN_R_TYPE (rel->r_info))
2397 {
2398 case R_IA64_TPREL64MSB:
2399 case R_IA64_TPREL64LSB:
2400 if (bfd_link_pic (info) || maybe_dynamic)
2401 need_entry = NEED_DYNREL;
2402 dynrel_type = R_IA64_TPREL64LSB;
2403 if (bfd_link_pic (info))
2404 info->flags |= DF_STATIC_TLS;
2405 break;
2406
2407 case R_IA64_LTOFF_TPREL22:
2408 need_entry = NEED_TPREL;
2409 if (bfd_link_pic (info))
2410 info->flags |= DF_STATIC_TLS;
2411 break;
2412
2413 case R_IA64_DTPREL32MSB:
2414 case R_IA64_DTPREL32LSB:
2415 case R_IA64_DTPREL64MSB:
2416 case R_IA64_DTPREL64LSB:
2417 if (bfd_link_pic (info) || maybe_dynamic)
2418 need_entry = NEED_DYNREL;
2419 dynrel_type = R_IA64_DTPRELNNLSB;
2420 break;
2421
2422 case R_IA64_LTOFF_DTPREL22:
2423 need_entry = NEED_DTPREL;
2424 break;
2425
2426 case R_IA64_DTPMOD64MSB:
2427 case R_IA64_DTPMOD64LSB:
2428 if (bfd_link_pic (info) || maybe_dynamic)
2429 need_entry = NEED_DYNREL;
2430 dynrel_type = R_IA64_DTPMOD64LSB;
2431 break;
2432
2433 case R_IA64_LTOFF_DTPMOD22:
2434 need_entry = NEED_DTPMOD;
2435 break;
2436
2437 case R_IA64_LTOFF_FPTR22:
2438 case R_IA64_LTOFF_FPTR64I:
2439 case R_IA64_LTOFF_FPTR32MSB:
2440 case R_IA64_LTOFF_FPTR32LSB:
2441 case R_IA64_LTOFF_FPTR64MSB:
2442 case R_IA64_LTOFF_FPTR64LSB:
2443 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2444 break;
2445
2446 case R_IA64_FPTR64I:
2447 case R_IA64_FPTR32MSB:
2448 case R_IA64_FPTR32LSB:
2449 case R_IA64_FPTR64MSB:
2450 case R_IA64_FPTR64LSB:
2451 if (bfd_link_pic (info) || h)
2452 need_entry = NEED_FPTR | NEED_DYNREL;
2453 else
2454 need_entry = NEED_FPTR;
2455 dynrel_type = R_IA64_FPTRNNLSB;
2456 break;
2457
2458 case R_IA64_LTOFF22:
2459 case R_IA64_LTOFF64I:
2460 need_entry = NEED_GOT;
2461 break;
2462
2463 case R_IA64_LTOFF22X:
2464 need_entry = NEED_GOTX;
2465 break;
2466
2467 case R_IA64_PLTOFF22:
2468 case R_IA64_PLTOFF64I:
2469 case R_IA64_PLTOFF64MSB:
2470 case R_IA64_PLTOFF64LSB:
2471 need_entry = NEED_PLTOFF;
2472 if (h)
2473 {
2474 if (maybe_dynamic)
2475 need_entry |= NEED_MIN_PLT;
2476 }
2477 break;
2478
2479 case R_IA64_PCREL21B:
2480 case R_IA64_PCREL60B:
2481 /* Depending on where this symbol is defined, we may or may not
2482 need a full plt entry. Only skip if we know we'll not need
2483 the entry -- static or symbolic, and the symbol definition
2484 has already been seen. */
2485 if (maybe_dynamic && rel->r_addend == 0)
2486 need_entry = NEED_FULL_PLT;
2487 break;
2488
2489 case R_IA64_IMM14:
2490 case R_IA64_IMM22:
2491 case R_IA64_IMM64:
2492 case R_IA64_DIR32MSB:
2493 case R_IA64_DIR32LSB:
2494 case R_IA64_DIR64MSB:
2495 case R_IA64_DIR64LSB:
2496 /* Shared objects will always need at least a REL relocation. */
2497 if (bfd_link_pic (info) || maybe_dynamic)
2498 need_entry = NEED_DYNREL;
2499 dynrel_type = R_IA64_DIRNNLSB;
2500 break;
2501
2502 case R_IA64_IPLTMSB:
2503 case R_IA64_IPLTLSB:
2504 /* Shared objects will always need at least a REL relocation. */
2505 if (bfd_link_pic (info) || maybe_dynamic)
2506 need_entry = NEED_DYNREL;
2507 dynrel_type = R_IA64_IPLTLSB;
2508 break;
2509
2510 case R_IA64_PCREL22:
2511 case R_IA64_PCREL64I:
2512 case R_IA64_PCREL32MSB:
2513 case R_IA64_PCREL32LSB:
2514 case R_IA64_PCREL64MSB:
2515 case R_IA64_PCREL64LSB:
2516 if (maybe_dynamic)
2517 need_entry = NEED_DYNREL;
2518 dynrel_type = R_IA64_PCRELNNLSB;
2519 break;
2520 }
2521
2522 if (!need_entry)
2523 continue;
2524
2525 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2526
2527 /* Record whether or not this is a local symbol. */
2528 dyn_i->h = h;
2529
2530 /* Create what's needed. */
2531 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2532 | NEED_DTPMOD | NEED_DTPREL))
2533 {
2534 if (!got)
2535 {
2536 got = get_got (abfd, info, ia64_info);
2537 if (!got)
2538 return FALSE;
2539 }
2540 if (need_entry & NEED_GOT)
2541 dyn_i->want_got = 1;
2542 if (need_entry & NEED_GOTX)
2543 dyn_i->want_gotx = 1;
2544 if (need_entry & NEED_TPREL)
2545 dyn_i->want_tprel = 1;
2546 if (need_entry & NEED_DTPMOD)
2547 dyn_i->want_dtpmod = 1;
2548 if (need_entry & NEED_DTPREL)
2549 dyn_i->want_dtprel = 1;
2550 }
2551 if (need_entry & NEED_FPTR)
2552 {
2553 if (!fptr)
2554 {
2555 fptr = get_fptr (abfd, info, ia64_info);
2556 if (!fptr)
2557 return FALSE;
2558 }
2559
2560 /* FPTRs for shared libraries are allocated by the dynamic
2561 linker. Make sure this local symbol will appear in the
2562 dynamic symbol table. */
2563 if (!h && bfd_link_pic (info))
2564 {
2565 if (! (bfd_elf_link_record_local_dynamic_symbol
2566 (info, abfd, (long) r_symndx)))
2567 return FALSE;
2568 }
2569
2570 dyn_i->want_fptr = 1;
2571 }
2572 if (need_entry & NEED_LTOFF_FPTR)
2573 dyn_i->want_ltoff_fptr = 1;
2574 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2575 {
2576 if (!ia64_info->root.dynobj)
2577 ia64_info->root.dynobj = abfd;
2578 h->needs_plt = 1;
2579 dyn_i->want_plt = 1;
2580 }
2581 if (need_entry & NEED_FULL_PLT)
2582 dyn_i->want_plt2 = 1;
2583 if (need_entry & NEED_PLTOFF)
2584 {
2585 /* This is needed here, in case @pltoff is used in a non-shared
2586 link. */
2587 if (!pltoff)
2588 {
2589 pltoff = get_pltoff (abfd, info, ia64_info);
2590 if (!pltoff)
2591 return FALSE;
2592 }
2593
2594 dyn_i->want_pltoff = 1;
2595 }
2596 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2597 {
2598 if (!srel)
2599 {
2600 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2601 if (!srel)
2602 return FALSE;
2603 }
2604 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2605 (sec->flags & SEC_READONLY) != 0))
2606 return FALSE;
2607 }
2608 }
2609
2610 return TRUE;
2611 }
2612
2613 /* For cleanliness, and potentially faster dynamic loading, allocate
2614 external GOT entries first. */
2615
2616 static bfd_boolean
2617 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2618 void * data)
2619 {
2620 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2621
2622 if ((dyn_i->want_got || dyn_i->want_gotx)
2623 && ! dyn_i->want_fptr
2624 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2625 {
2626 dyn_i->got_offset = x->ofs;
2627 x->ofs += 8;
2628 }
2629 if (dyn_i->want_tprel)
2630 {
2631 dyn_i->tprel_offset = x->ofs;
2632 x->ofs += 8;
2633 }
2634 if (dyn_i->want_dtpmod)
2635 {
2636 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2637 {
2638 dyn_i->dtpmod_offset = x->ofs;
2639 x->ofs += 8;
2640 }
2641 else
2642 {
2643 struct elfNN_ia64_link_hash_table *ia64_info;
2644
2645 ia64_info = elfNN_ia64_hash_table (x->info);
2646 if (ia64_info == NULL)
2647 return FALSE;
2648
2649 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2650 {
2651 ia64_info->self_dtpmod_offset = x->ofs;
2652 x->ofs += 8;
2653 }
2654 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2655 }
2656 }
2657 if (dyn_i->want_dtprel)
2658 {
2659 dyn_i->dtprel_offset = x->ofs;
2660 x->ofs += 8;
2661 }
2662 return TRUE;
2663 }
2664
2665 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2666
2667 static bfd_boolean
2668 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2669 void * data)
2670 {
2671 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2672
2673 if (dyn_i->want_got
2674 && dyn_i->want_fptr
2675 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2676 {
2677 dyn_i->got_offset = x->ofs;
2678 x->ofs += 8;
2679 }
2680 return TRUE;
2681 }
2682
2683 /* Lastly, allocate all the GOT entries for local data. */
2684
2685 static bfd_boolean
2686 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2687 void * data)
2688 {
2689 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2690
2691 if ((dyn_i->want_got || dyn_i->want_gotx)
2692 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2693 {
2694 dyn_i->got_offset = x->ofs;
2695 x->ofs += 8;
2696 }
2697 return TRUE;
2698 }
2699
2700 /* Search for the index of a global symbol in it's defining object file. */
2701
2702 static long
2703 global_sym_index (struct elf_link_hash_entry *h)
2704 {
2705 struct elf_link_hash_entry **p;
2706 bfd *obj;
2707
2708 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2709 || h->root.type == bfd_link_hash_defweak);
2710
2711 obj = h->root.u.def.section->owner;
2712 for (p = elf_sym_hashes (obj); *p != h; ++p)
2713 continue;
2714
2715 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2716 }
2717
2718 /* Allocate function descriptors. We can do these for every function
2719 in a main executable that is not exported. */
2720
2721 static bfd_boolean
2722 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2723 {
2724 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2725
2726 if (dyn_i->want_fptr)
2727 {
2728 struct elf_link_hash_entry *h = dyn_i->h;
2729
2730 if (h)
2731 while (h->root.type == bfd_link_hash_indirect
2732 || h->root.type == bfd_link_hash_warning)
2733 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2734
2735 if (!bfd_link_executable (x->info)
2736 && (!h
2737 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2738 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h))
2739 || (h->root.type != bfd_link_hash_undefweak
2740 && h->root.type != bfd_link_hash_undefined)))
2741 {
2742 if (h && h->dynindx == -1)
2743 {
2744 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2745 || (h->root.type == bfd_link_hash_defweak));
2746
2747 if (!bfd_elf_link_record_local_dynamic_symbol
2748 (x->info, h->root.u.def.section->owner,
2749 global_sym_index (h)))
2750 return FALSE;
2751 }
2752
2753 dyn_i->want_fptr = 0;
2754 }
2755 else if (h == NULL || h->dynindx == -1)
2756 {
2757 dyn_i->fptr_offset = x->ofs;
2758 x->ofs += 16;
2759 }
2760 else
2761 dyn_i->want_fptr = 0;
2762 }
2763 return TRUE;
2764 }
2765
2766 /* Allocate all the minimal PLT entries. */
2767
2768 static bfd_boolean
2769 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2770 void * data)
2771 {
2772 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2773
2774 if (dyn_i->want_plt)
2775 {
2776 struct elf_link_hash_entry *h = dyn_i->h;
2777
2778 if (h)
2779 while (h->root.type == bfd_link_hash_indirect
2780 || h->root.type == bfd_link_hash_warning)
2781 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2782
2783 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2784 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2785 {
2786 bfd_size_type offset = x->ofs;
2787 if (offset == 0)
2788 offset = PLT_HEADER_SIZE;
2789 dyn_i->plt_offset = offset;
2790 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2791
2792 dyn_i->want_pltoff = 1;
2793 }
2794 else
2795 {
2796 dyn_i->want_plt = 0;
2797 dyn_i->want_plt2 = 0;
2798 }
2799 }
2800 return TRUE;
2801 }
2802
2803 /* Allocate all the full PLT entries. */
2804
2805 static bfd_boolean
2806 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2807 void * data)
2808 {
2809 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2810
2811 if (dyn_i->want_plt2)
2812 {
2813 struct elf_link_hash_entry *h = dyn_i->h;
2814 bfd_size_type ofs = x->ofs;
2815
2816 dyn_i->plt2_offset = ofs;
2817 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2818
2819 while (h->root.type == bfd_link_hash_indirect
2820 || h->root.type == bfd_link_hash_warning)
2821 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2822 dyn_i->h->plt.offset = ofs;
2823 }
2824 return TRUE;
2825 }
2826
2827 /* Allocate all the PLTOFF entries requested by relocations and
2828 plt entries. We can't share space with allocated FPTR entries,
2829 because the latter are not necessarily addressable by the GP.
2830 ??? Relaxation might be able to determine that they are. */
2831
2832 static bfd_boolean
2833 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2834 void * data)
2835 {
2836 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2837
2838 if (dyn_i->want_pltoff)
2839 {
2840 dyn_i->pltoff_offset = x->ofs;
2841 x->ofs += 16;
2842 }
2843 return TRUE;
2844 }
2845
2846 /* Allocate dynamic relocations for those symbols that turned out
2847 to be dynamic. */
2848
2849 static bfd_boolean
2850 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2851 void * data)
2852 {
2853 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2854 struct elfNN_ia64_link_hash_table *ia64_info;
2855 struct elfNN_ia64_dyn_reloc_entry *rent;
2856 bfd_boolean dynamic_symbol, shared, resolved_zero;
2857
2858 ia64_info = elfNN_ia64_hash_table (x->info);
2859 if (ia64_info == NULL)
2860 return FALSE;
2861
2862 /* Note that this can't be used in relation to FPTR relocs below. */
2863 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2864
2865 shared = bfd_link_pic (x->info);
2866 resolved_zero = (dyn_i->h
2867 && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info,
2868 dyn_i->h));
2869
2870 /* Take care of the GOT and PLT relocations. */
2871
2872 if ((!resolved_zero
2873 && (dynamic_symbol || shared)
2874 && (dyn_i->want_got || dyn_i->want_gotx))
2875 || (dyn_i->want_ltoff_fptr
2876 && dyn_i->h
2877 && dyn_i->h->dynindx != -1))
2878 {
2879 if (!dyn_i->want_ltoff_fptr
2880 || !bfd_link_pie (x->info)
2881 || dyn_i->h == NULL
2882 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2883 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2884 }
2885 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2886 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2887 if (dynamic_symbol && dyn_i->want_dtpmod)
2888 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2889 if (dynamic_symbol && dyn_i->want_dtprel)
2890 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2891
2892 if (x->only_got)
2893 return TRUE;
2894
2895 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2896 {
2897 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2898 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2899 }
2900
2901 if (!resolved_zero && dyn_i->want_pltoff)
2902 {
2903 bfd_size_type t = 0;
2904
2905 /* Dynamic symbols get one IPLT relocation. Local symbols in
2906 shared libraries get two REL relocations. Local symbols in
2907 main applications get nothing. */
2908 if (dynamic_symbol)
2909 t = sizeof (ElfNN_External_Rela);
2910 else if (shared)
2911 t = 2 * sizeof (ElfNN_External_Rela);
2912
2913 ia64_info->rel_pltoff_sec->size += t;
2914 }
2915
2916 /* Take care of the normal data relocations. */
2917
2918 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2919 {
2920 int count = rent->count;
2921
2922 switch (rent->type)
2923 {
2924 case R_IA64_FPTR32LSB:
2925 case R_IA64_FPTR64LSB:
2926 /* Allocate one iff !want_fptr and not PIE, which by this point
2927 will be true only if we're actually allocating one statically
2928 in the main executable. Position independent executables
2929 need a relative reloc. */
2930 if (dyn_i->want_fptr && !bfd_link_pie (x->info))
2931 continue;
2932 break;
2933 case R_IA64_PCREL32LSB:
2934 case R_IA64_PCREL64LSB:
2935 if (!dynamic_symbol)
2936 continue;
2937 break;
2938 case R_IA64_DIR32LSB:
2939 case R_IA64_DIR64LSB:
2940 if (!dynamic_symbol && !shared)
2941 continue;
2942 break;
2943 case R_IA64_IPLTLSB:
2944 if (!dynamic_symbol && !shared)
2945 continue;
2946 /* Use two REL relocations for IPLT relocations
2947 against local symbols. */
2948 if (!dynamic_symbol)
2949 count *= 2;
2950 break;
2951 case R_IA64_DTPREL32LSB:
2952 case R_IA64_TPREL64LSB:
2953 case R_IA64_DTPREL64LSB:
2954 case R_IA64_DTPMOD64LSB:
2955 break;
2956 default:
2957 abort ();
2958 }
2959 if (rent->reltext)
2960 ia64_info->reltext = 1;
2961 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2962 }
2963
2964 return TRUE;
2965 }
2966
2967 static bfd_boolean
2968 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2969 struct elf_link_hash_entry *h)
2970 {
2971 /* ??? Undefined symbols with PLT entries should be re-defined
2972 to be the PLT entry. */
2973
2974 /* If this is a weak symbol, and there is a real definition, the
2975 processor independent code will have arranged for us to see the
2976 real definition first, and we can just use the same value. */
2977 if (h->is_weakalias)
2978 {
2979 struct elf_link_hash_entry *def = weakdef (h);
2980 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2981 h->root.u.def.section = def->root.u.def.section;
2982 h->root.u.def.value = def->root.u.def.value;
2983 return TRUE;
2984 }
2985
2986 /* If this is a reference to a symbol defined by a dynamic object which
2987 is not a function, we might allocate the symbol in our .dynbss section
2988 and allocate a COPY dynamic relocation.
2989
2990 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2991 of hackery. */
2992
2993 return TRUE;
2994 }
2995
2996 static bfd_boolean
2997 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2998 struct bfd_link_info *info)
2999 {
3000 struct elfNN_ia64_allocate_data data;
3001 struct elfNN_ia64_link_hash_table *ia64_info;
3002 asection *sec;
3003 bfd *dynobj;
3004 bfd_boolean relplt = FALSE;
3005
3006 ia64_info = elfNN_ia64_hash_table (info);
3007 if (ia64_info == NULL)
3008 return FALSE;
3009 dynobj = ia64_info->root.dynobj;
3010 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
3011 BFD_ASSERT(dynobj != NULL);
3012 data.info = info;
3013
3014 /* Set the contents of the .interp section to the interpreter. */
3015 if (ia64_info->root.dynamic_sections_created
3016 && bfd_link_executable (info) && !info->nointerp)
3017 {
3018 sec = bfd_get_linker_section (dynobj, ".interp");
3019 BFD_ASSERT (sec != NULL);
3020 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3021 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3022 }
3023
3024 /* Allocate the GOT entries. */
3025
3026 if (ia64_info->root.sgot)
3027 {
3028 data.ofs = 0;
3029 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3030 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3031 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3032 ia64_info->root.sgot->size = data.ofs;
3033 }
3034
3035 /* Allocate the FPTR entries. */
3036
3037 if (ia64_info->fptr_sec)
3038 {
3039 data.ofs = 0;
3040 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3041 ia64_info->fptr_sec->size = data.ofs;
3042 }
3043
3044 /* Now that we've seen all of the input files, we can decide which
3045 symbols need plt entries. Allocate the minimal PLT entries first.
3046 We do this even though dynamic_sections_created may be FALSE, because
3047 this has the side-effect of clearing want_plt and want_plt2. */
3048
3049 data.ofs = 0;
3050 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3051
3052 ia64_info->minplt_entries = 0;
3053 if (data.ofs)
3054 {
3055 ia64_info->minplt_entries
3056 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3057 }
3058
3059 /* Align the pointer for the plt2 entries. */
3060 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3061
3062 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3063 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3064 {
3065 /* FIXME: we always reserve the memory for dynamic linker even if
3066 there are no PLT entries since dynamic linker may assume the
3067 reserved memory always exists. */
3068
3069 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3070
3071 ia64_info->root.splt->size = data.ofs;
3072
3073 /* If we've got a .plt, we need some extra memory for the dynamic
3074 linker. We stuff these in .got.plt. */
3075 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
3076 }
3077
3078 /* Allocate the PLTOFF entries. */
3079
3080 if (ia64_info->pltoff_sec)
3081 {
3082 data.ofs = 0;
3083 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3084 ia64_info->pltoff_sec->size = data.ofs;
3085 }
3086
3087 if (ia64_info->root.dynamic_sections_created)
3088 {
3089 /* Allocate space for the dynamic relocations that turned out to be
3090 required. */
3091
3092 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3093 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3094 data.only_got = FALSE;
3095 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3096 }
3097
3098 /* We have now determined the sizes of the various dynamic sections.
3099 Allocate memory for them. */
3100 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3101 {
3102 bfd_boolean strip;
3103
3104 if (!(sec->flags & SEC_LINKER_CREATED))
3105 continue;
3106
3107 /* If we don't need this section, strip it from the output file.
3108 There were several sections primarily related to dynamic
3109 linking that must be create before the linker maps input
3110 sections to output sections. The linker does that before
3111 bfd_elf_size_dynamic_sections is called, and it is that
3112 function which decides whether anything needs to go into
3113 these sections. */
3114
3115 strip = (sec->size == 0);
3116
3117 if (sec == ia64_info->root.sgot)
3118 strip = FALSE;
3119 else if (sec == ia64_info->root.srelgot)
3120 {
3121 if (strip)
3122 ia64_info->root.srelgot = NULL;
3123 else
3124 /* We use the reloc_count field as a counter if we need to
3125 copy relocs into the output file. */
3126 sec->reloc_count = 0;
3127 }
3128 else if (sec == ia64_info->fptr_sec)
3129 {
3130 if (strip)
3131 ia64_info->fptr_sec = NULL;
3132 }
3133 else if (sec == ia64_info->rel_fptr_sec)
3134 {
3135 if (strip)
3136 ia64_info->rel_fptr_sec = NULL;
3137 else
3138 /* We use the reloc_count field as a counter if we need to
3139 copy relocs into the output file. */
3140 sec->reloc_count = 0;
3141 }
3142 else if (sec == ia64_info->root.splt)
3143 {
3144 if (strip)
3145 ia64_info->root.splt = NULL;
3146 }
3147 else if (sec == ia64_info->pltoff_sec)
3148 {
3149 if (strip)
3150 ia64_info->pltoff_sec = NULL;
3151 }
3152 else if (sec == ia64_info->rel_pltoff_sec)
3153 {
3154 if (strip)
3155 ia64_info->rel_pltoff_sec = NULL;
3156 else
3157 {
3158 relplt = TRUE;
3159 /* We use the reloc_count field as a counter if we need to
3160 copy relocs into the output file. */
3161 sec->reloc_count = 0;
3162 }
3163 }
3164 else
3165 {
3166 const char *name;
3167
3168 /* It's OK to base decisions on the section name, because none
3169 of the dynobj section names depend upon the input files. */
3170 name = bfd_section_name (sec);
3171
3172 if (strcmp (name, ".got.plt") == 0)
3173 strip = FALSE;
3174 else if (CONST_STRNEQ (name, ".rel"))
3175 {
3176 if (!strip)
3177 {
3178 /* We use the reloc_count field as a counter if we need to
3179 copy relocs into the output file. */
3180 sec->reloc_count = 0;
3181 }
3182 }
3183 else
3184 continue;
3185 }
3186
3187 if (strip)
3188 sec->flags |= SEC_EXCLUDE;
3189 else
3190 {
3191 /* Allocate memory for the section contents. */
3192 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3193 if (sec->contents == NULL && sec->size != 0)
3194 return FALSE;
3195 }
3196 }
3197
3198 if (ia64_info->root.dynamic_sections_created)
3199 {
3200 /* Add some entries to the .dynamic section. We fill in the values
3201 later (in finish_dynamic_sections) but we must add the entries now
3202 so that we get the correct size for the .dynamic section. */
3203
3204 if (bfd_link_executable (info))
3205 {
3206 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3207 by the debugger. */
3208 #define add_dynamic_entry(TAG, VAL) \
3209 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3210
3211 if (!add_dynamic_entry (DT_DEBUG, 0))
3212 return FALSE;
3213 }
3214
3215 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3216 return FALSE;
3217 if (!add_dynamic_entry (DT_PLTGOT, 0))
3218 return FALSE;
3219
3220 if (relplt)
3221 {
3222 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3223 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3224 || !add_dynamic_entry (DT_JMPREL, 0))
3225 return FALSE;
3226 }
3227
3228 if (!add_dynamic_entry (DT_RELA, 0)
3229 || !add_dynamic_entry (DT_RELASZ, 0)
3230 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3231 return FALSE;
3232
3233 if (ia64_info->reltext)
3234 {
3235 if (!add_dynamic_entry (DT_TEXTREL, 0))
3236 return FALSE;
3237 info->flags |= DF_TEXTREL;
3238 }
3239 }
3240
3241 /* ??? Perhaps force __gp local. */
3242
3243 return TRUE;
3244 }
3245
3246 static void
3247 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3248 asection *sec, asection *srel,
3249 bfd_vma offset, unsigned int type,
3250 long dynindx, bfd_vma addend)
3251 {
3252 Elf_Internal_Rela outrel;
3253 bfd_byte *loc;
3254
3255 BFD_ASSERT (dynindx != -1);
3256 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3257 outrel.r_addend = addend;
3258 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3259 if (outrel.r_offset >= (bfd_vma) -2)
3260 {
3261 /* Run for the hills. We shouldn't be outputting a relocation
3262 for this. So do what everyone else does and output a no-op. */
3263 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3264 outrel.r_addend = 0;
3265 outrel.r_offset = 0;
3266 }
3267 else
3268 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3269
3270 loc = srel->contents;
3271 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3272 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3273 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3274 }
3275
3276 /* Store an entry for target address TARGET_ADDR in the linkage table
3277 and return the gp-relative address of the linkage table entry. */
3278
3279 static bfd_vma
3280 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3281 struct elfNN_ia64_dyn_sym_info *dyn_i,
3282 long dynindx, bfd_vma addend, bfd_vma value,
3283 unsigned int dyn_r_type)
3284 {
3285 struct elfNN_ia64_link_hash_table *ia64_info;
3286 asection *got_sec;
3287 bfd_boolean done;
3288 bfd_vma got_offset;
3289
3290 ia64_info = elfNN_ia64_hash_table (info);
3291 if (ia64_info == NULL)
3292 return 0;
3293
3294 got_sec = ia64_info->root.sgot;
3295
3296 switch (dyn_r_type)
3297 {
3298 case R_IA64_TPREL64LSB:
3299 done = dyn_i->tprel_done;
3300 dyn_i->tprel_done = TRUE;
3301 got_offset = dyn_i->tprel_offset;
3302 break;
3303 case R_IA64_DTPMOD64LSB:
3304 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3305 {
3306 done = dyn_i->dtpmod_done;
3307 dyn_i->dtpmod_done = TRUE;
3308 }
3309 else
3310 {
3311 done = ia64_info->self_dtpmod_done;
3312 ia64_info->self_dtpmod_done = TRUE;
3313 dynindx = 0;
3314 }
3315 got_offset = dyn_i->dtpmod_offset;
3316 break;
3317 case R_IA64_DTPREL32LSB:
3318 case R_IA64_DTPREL64LSB:
3319 done = dyn_i->dtprel_done;
3320 dyn_i->dtprel_done = TRUE;
3321 got_offset = dyn_i->dtprel_offset;
3322 break;
3323 default:
3324 done = dyn_i->got_done;
3325 dyn_i->got_done = TRUE;
3326 got_offset = dyn_i->got_offset;
3327 break;
3328 }
3329
3330 BFD_ASSERT ((got_offset & 7) == 0);
3331
3332 if (! done)
3333 {
3334 /* Store the target address in the linkage table entry. */
3335 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3336
3337 /* Install a dynamic relocation if needed. */
3338 if (((bfd_link_pic (info)
3339 && (!dyn_i->h
3340 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3341 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3342 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3343 && dyn_r_type != R_IA64_DTPREL32LSB
3344 && dyn_r_type != R_IA64_DTPREL64LSB)
3345 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3346 || (dynindx != -1
3347 && (dyn_r_type == R_IA64_FPTR32LSB
3348 || dyn_r_type == R_IA64_FPTR64LSB)))
3349 && (!dyn_i->want_ltoff_fptr
3350 || !bfd_link_pie (info)
3351 || !dyn_i->h
3352 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3353 {
3354 if (dynindx == -1
3355 && dyn_r_type != R_IA64_TPREL64LSB
3356 && dyn_r_type != R_IA64_DTPMOD64LSB
3357 && dyn_r_type != R_IA64_DTPREL32LSB
3358 && dyn_r_type != R_IA64_DTPREL64LSB)
3359 {
3360 dyn_r_type = R_IA64_RELNNLSB;
3361 dynindx = 0;
3362 addend = value;
3363 }
3364
3365 if (bfd_big_endian (abfd))
3366 {
3367 switch (dyn_r_type)
3368 {
3369 case R_IA64_REL32LSB:
3370 dyn_r_type = R_IA64_REL32MSB;
3371 break;
3372 case R_IA64_DIR32LSB:
3373 dyn_r_type = R_IA64_DIR32MSB;
3374 break;
3375 case R_IA64_FPTR32LSB:
3376 dyn_r_type = R_IA64_FPTR32MSB;
3377 break;
3378 case R_IA64_DTPREL32LSB:
3379 dyn_r_type = R_IA64_DTPREL32MSB;
3380 break;
3381 case R_IA64_REL64LSB:
3382 dyn_r_type = R_IA64_REL64MSB;
3383 break;
3384 case R_IA64_DIR64LSB:
3385 dyn_r_type = R_IA64_DIR64MSB;
3386 break;
3387 case R_IA64_FPTR64LSB:
3388 dyn_r_type = R_IA64_FPTR64MSB;
3389 break;
3390 case R_IA64_TPREL64LSB:
3391 dyn_r_type = R_IA64_TPREL64MSB;
3392 break;
3393 case R_IA64_DTPMOD64LSB:
3394 dyn_r_type = R_IA64_DTPMOD64MSB;
3395 break;
3396 case R_IA64_DTPREL64LSB:
3397 dyn_r_type = R_IA64_DTPREL64MSB;
3398 break;
3399 default:
3400 BFD_ASSERT (FALSE);
3401 break;
3402 }
3403 }
3404
3405 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3406 ia64_info->root.srelgot,
3407 got_offset, dyn_r_type,
3408 dynindx, addend);
3409 }
3410 }
3411
3412 /* Return the address of the linkage table entry. */
3413 value = (got_sec->output_section->vma
3414 + got_sec->output_offset
3415 + got_offset);
3416
3417 return value;
3418 }
3419
3420 /* Fill in a function descriptor consisting of the function's code
3421 address and its global pointer. Return the descriptor's address. */
3422
3423 static bfd_vma
3424 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3425 struct elfNN_ia64_dyn_sym_info *dyn_i,
3426 bfd_vma value)
3427 {
3428 struct elfNN_ia64_link_hash_table *ia64_info;
3429 asection *fptr_sec;
3430
3431 ia64_info = elfNN_ia64_hash_table (info);
3432 if (ia64_info == NULL)
3433 return 0;
3434
3435 fptr_sec = ia64_info->fptr_sec;
3436
3437 if (!dyn_i->fptr_done)
3438 {
3439 dyn_i->fptr_done = 1;
3440
3441 /* Fill in the function descriptor. */
3442 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3443 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3444 fptr_sec->contents + dyn_i->fptr_offset + 8);
3445 if (ia64_info->rel_fptr_sec)
3446 {
3447 Elf_Internal_Rela outrel;
3448 bfd_byte *loc;
3449
3450 if (bfd_little_endian (abfd))
3451 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3452 else
3453 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3454 outrel.r_addend = value;
3455 outrel.r_offset = (fptr_sec->output_section->vma
3456 + fptr_sec->output_offset
3457 + dyn_i->fptr_offset);
3458 loc = ia64_info->rel_fptr_sec->contents;
3459 loc += ia64_info->rel_fptr_sec->reloc_count++
3460 * sizeof (ElfNN_External_Rela);
3461 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3462 }
3463 }
3464
3465 /* Return the descriptor's address. */
3466 value = (fptr_sec->output_section->vma
3467 + fptr_sec->output_offset
3468 + dyn_i->fptr_offset);
3469
3470 return value;
3471 }
3472
3473 /* Fill in a PLTOFF entry consisting of the function's code address
3474 and its global pointer. Return the descriptor's address. */
3475
3476 static bfd_vma
3477 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3478 struct elfNN_ia64_dyn_sym_info *dyn_i,
3479 bfd_vma value, bfd_boolean is_plt)
3480 {
3481 struct elfNN_ia64_link_hash_table *ia64_info;
3482 asection *pltoff_sec;
3483
3484 ia64_info = elfNN_ia64_hash_table (info);
3485 if (ia64_info == NULL)
3486 return 0;
3487
3488 pltoff_sec = ia64_info->pltoff_sec;
3489
3490 /* Don't do anything if this symbol uses a real PLT entry. In
3491 that case, we'll fill this in during finish_dynamic_symbol. */
3492 if ((! dyn_i->want_plt || is_plt)
3493 && !dyn_i->pltoff_done)
3494 {
3495 bfd_vma gp = _bfd_get_gp_value (abfd);
3496
3497 /* Fill in the function descriptor. */
3498 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3499 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3500
3501 /* Install dynamic relocations if needed. */
3502 if (!is_plt
3503 && bfd_link_pic (info)
3504 && (!dyn_i->h
3505 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3506 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3507 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3508 {
3509 unsigned int dyn_r_type;
3510
3511 if (bfd_big_endian (abfd))
3512 dyn_r_type = R_IA64_RELNNMSB;
3513 else
3514 dyn_r_type = R_IA64_RELNNLSB;
3515
3516 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3517 ia64_info->rel_pltoff_sec,
3518 dyn_i->pltoff_offset,
3519 dyn_r_type, 0, value);
3520 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3521 ia64_info->rel_pltoff_sec,
3522 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3523 dyn_r_type, 0, gp);
3524 }
3525
3526 dyn_i->pltoff_done = 1;
3527 }
3528
3529 /* Return the descriptor's address. */
3530 value = (pltoff_sec->output_section->vma
3531 + pltoff_sec->output_offset
3532 + dyn_i->pltoff_offset);
3533
3534 return value;
3535 }
3536
3537 /* Return the base VMA address which should be subtracted from real addresses
3538 when resolving @tprel() relocation.
3539 Main program TLS (whose template starts at PT_TLS p_vaddr)
3540 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3541
3542 static bfd_vma
3543 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3544 {
3545 asection *tls_sec = elf_hash_table (info)->tls_sec;
3546 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3547 tls_sec->alignment_power);
3548 }
3549
3550 /* Return the base VMA address which should be subtracted from real addresses
3551 when resolving @dtprel() relocation.
3552 This is PT_TLS segment p_vaddr. */
3553
3554 static bfd_vma
3555 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3556 {
3557 return elf_hash_table (info)->tls_sec->vma;
3558 }
3559
3560 /* Called through qsort to sort the .IA_64.unwind section during a
3561 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3562 to the output bfd so we can do proper endianness frobbing. */
3563
3564 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3565
3566 static int
3567 elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3568 {
3569 bfd_vma av, bv;
3570
3571 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3572 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3573
3574 return (av < bv ? -1 : av > bv ? 1 : 0);
3575 }
3576
3577 /* Make sure we've got ourselves a nice fat __gp value. */
3578 static bfd_boolean
3579 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3580 {
3581 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3582 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3583 struct elf_link_hash_entry *gp;
3584 bfd_vma gp_val;
3585 asection *os;
3586 struct elfNN_ia64_link_hash_table *ia64_info;
3587
3588 ia64_info = elfNN_ia64_hash_table (info);
3589 if (ia64_info == NULL)
3590 return FALSE;
3591
3592 /* Find the min and max vma of all sections marked short. Also collect
3593 min and max vma of any type, for use in selecting a nice gp. */
3594 for (os = abfd->sections; os ; os = os->next)
3595 {
3596 bfd_vma lo, hi;
3597
3598 if ((os->flags & SEC_ALLOC) == 0)
3599 continue;
3600
3601 lo = os->vma;
3602 /* When this function is called from elfNN_ia64_final_link
3603 the correct value to use is os->size. When called from
3604 elfNN_ia64_relax_section we are in the middle of section
3605 sizing; some sections will already have os->size set, others
3606 will have os->size zero and os->rawsize the previous size. */
3607 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3608 if (hi < lo)
3609 hi = (bfd_vma) -1;
3610
3611 if (min_vma > lo)
3612 min_vma = lo;
3613 if (max_vma < hi)
3614 max_vma = hi;
3615 if (os->flags & SEC_SMALL_DATA)
3616 {
3617 if (min_short_vma > lo)
3618 min_short_vma = lo;
3619 if (max_short_vma < hi)
3620 max_short_vma = hi;
3621 }
3622 }
3623
3624 if (ia64_info->min_short_sec)
3625 {
3626 if (min_short_vma
3627 > (ia64_info->min_short_sec->vma
3628 + ia64_info->min_short_offset))
3629 min_short_vma = (ia64_info->min_short_sec->vma
3630 + ia64_info->min_short_offset);
3631 if (max_short_vma
3632 < (ia64_info->max_short_sec->vma
3633 + ia64_info->max_short_offset))
3634 max_short_vma = (ia64_info->max_short_sec->vma
3635 + ia64_info->max_short_offset);
3636 }
3637
3638 /* See if the user wants to force a value. */
3639 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3640 FALSE, FALSE);
3641
3642 if (gp
3643 && (gp->root.type == bfd_link_hash_defined
3644 || gp->root.type == bfd_link_hash_defweak))
3645 {
3646 asection *gp_sec = gp->root.u.def.section;
3647 gp_val = (gp->root.u.def.value
3648 + gp_sec->output_section->vma
3649 + gp_sec->output_offset);
3650 }
3651 else
3652 {
3653 /* Pick a sensible value. */
3654
3655 if (ia64_info->min_short_sec)
3656 {
3657 bfd_vma short_range = max_short_vma - min_short_vma;
3658
3659 /* If min_short_sec is set, pick one in the middle bewteen
3660 min_short_vma and max_short_vma. */
3661 if (short_range >= 0x400000)
3662 goto overflow;
3663 gp_val = min_short_vma + short_range / 2;
3664 }
3665 else
3666 {
3667 asection *got_sec = ia64_info->root.sgot;
3668
3669 /* Start with just the address of the .got. */
3670 if (got_sec)
3671 gp_val = got_sec->output_section->vma;
3672 else if (max_short_vma != 0)
3673 gp_val = min_short_vma;
3674 else if (max_vma - min_vma < 0x200000)
3675 gp_val = min_vma;
3676 else
3677 gp_val = max_vma - 0x200000 + 8;
3678 }
3679
3680 /* If it is possible to address the entire image, but we
3681 don't with the choice above, adjust. */
3682 if (max_vma - min_vma < 0x400000
3683 && (max_vma - gp_val >= 0x200000
3684 || gp_val - min_vma > 0x200000))
3685 gp_val = min_vma + 0x200000;
3686 else if (max_short_vma != 0)
3687 {
3688 /* If we don't cover all the short data, adjust. */
3689 if (max_short_vma - gp_val >= 0x200000)
3690 gp_val = min_short_vma + 0x200000;
3691
3692 /* If we're addressing stuff past the end, adjust back. */
3693 if (gp_val > max_vma)
3694 gp_val = max_vma - 0x200000 + 8;
3695 }
3696 }
3697
3698 /* Validate whether all SHF_IA_64_SHORT sections are within
3699 range of the chosen GP. */
3700
3701 if (max_short_vma != 0)
3702 {
3703 if (max_short_vma - min_short_vma >= 0x400000)
3704 {
3705 overflow:
3706 _bfd_error_handler
3707 /* xgettext:c-format */
3708 (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"),
3709 abfd, (uint64_t) (max_short_vma - min_short_vma));
3710 return FALSE;
3711 }
3712 else if ((gp_val > min_short_vma
3713 && gp_val - min_short_vma > 0x200000)
3714 || (gp_val < max_short_vma
3715 && max_short_vma - gp_val >= 0x200000))
3716 {
3717 _bfd_error_handler
3718 (_("%pB: __gp does not cover short data segment"), abfd);
3719 return FALSE;
3720 }
3721 }
3722
3723 _bfd_set_gp_value (abfd, gp_val);
3724
3725 return TRUE;
3726 }
3727
3728 static bfd_boolean
3729 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3730 {
3731 struct elfNN_ia64_link_hash_table *ia64_info;
3732 asection *unwind_output_sec;
3733
3734 ia64_info = elfNN_ia64_hash_table (info);
3735 if (ia64_info == NULL)
3736 return FALSE;
3737
3738 /* Make sure we've got ourselves a nice fat __gp value. */
3739 if (!bfd_link_relocatable (info))
3740 {
3741 bfd_vma gp_val;
3742 struct elf_link_hash_entry *gp;
3743
3744 /* We assume after gp is set, section size will only decrease. We
3745 need to adjust gp for it. */
3746 _bfd_set_gp_value (abfd, 0);
3747 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3748 return FALSE;
3749 gp_val = _bfd_get_gp_value (abfd);
3750
3751 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3752 FALSE, FALSE);
3753 if (gp)
3754 {
3755 gp->root.type = bfd_link_hash_defined;
3756 gp->root.u.def.value = gp_val;
3757 gp->root.u.def.section = bfd_abs_section_ptr;
3758 }
3759 }
3760
3761 /* If we're producing a final executable, we need to sort the contents
3762 of the .IA_64.unwind section. Force this section to be relocated
3763 into memory rather than written immediately to the output file. */
3764 unwind_output_sec = NULL;
3765 if (!bfd_link_relocatable (info))
3766 {
3767 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3768 if (s)
3769 {
3770 unwind_output_sec = s->output_section;
3771 unwind_output_sec->contents
3772 = bfd_malloc (unwind_output_sec->size);
3773 if (unwind_output_sec->contents == NULL)
3774 return FALSE;
3775 }
3776 }
3777
3778 /* Invoke the regular ELF backend linker to do all the work. */
3779 if (!bfd_elf_final_link (abfd, info))
3780 return FALSE;
3781
3782 if (unwind_output_sec)
3783 {
3784 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3785 qsort (unwind_output_sec->contents,
3786 (size_t) (unwind_output_sec->size / 24),
3787 24,
3788 elfNN_ia64_unwind_entry_compare);
3789
3790 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3791 unwind_output_sec->contents, (bfd_vma) 0,
3792 unwind_output_sec->size))
3793 return FALSE;
3794 }
3795
3796 return TRUE;
3797 }
3798
3799 static bfd_boolean
3800 elfNN_ia64_relocate_section (bfd *output_bfd,
3801 struct bfd_link_info *info,
3802 bfd *input_bfd,
3803 asection *input_section,
3804 bfd_byte *contents,
3805 Elf_Internal_Rela *relocs,
3806 Elf_Internal_Sym *local_syms,
3807 asection **local_sections)
3808 {
3809 struct elfNN_ia64_link_hash_table *ia64_info;
3810 Elf_Internal_Shdr *symtab_hdr;
3811 Elf_Internal_Rela *rel;
3812 Elf_Internal_Rela *relend;
3813 asection *srel;
3814 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3815 bfd_vma gp_val;
3816
3817 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3818 ia64_info = elfNN_ia64_hash_table (info);
3819 if (ia64_info == NULL)
3820 return FALSE;
3821
3822 /* Infect various flags from the input section to the output section. */
3823 if (bfd_link_relocatable (info))
3824 {
3825 bfd_vma flags;
3826
3827 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3828 flags &= SHF_IA_64_NORECOV;
3829
3830 elf_section_data(input_section->output_section)
3831 ->this_hdr.sh_flags |= flags;
3832 }
3833
3834 gp_val = _bfd_get_gp_value (output_bfd);
3835 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3836
3837 rel = relocs;
3838 relend = relocs + input_section->reloc_count;
3839 for (; rel < relend; ++rel)
3840 {
3841 struct elf_link_hash_entry *h;
3842 struct elfNN_ia64_dyn_sym_info *dyn_i;
3843 bfd_reloc_status_type r;
3844 reloc_howto_type *howto;
3845 unsigned long r_symndx;
3846 Elf_Internal_Sym *sym;
3847 unsigned int r_type;
3848 bfd_vma value;
3849 asection *sym_sec;
3850 bfd_byte *hit_addr;
3851 bfd_boolean dynamic_symbol_p;
3852 bfd_boolean undef_weak_ref;
3853
3854 r_type = ELFNN_R_TYPE (rel->r_info);
3855 if (r_type > R_IA64_MAX_RELOC_CODE)
3856 {
3857 /* xgettext:c-format */
3858 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3859 input_bfd, (int) r_type);
3860 bfd_set_error (bfd_error_bad_value);
3861 ret_val = FALSE;
3862 continue;
3863 }
3864
3865 howto = ia64_elf_lookup_howto (r_type);
3866 if (howto == NULL)
3867 {
3868 ret_val = FALSE;
3869 continue;
3870 }
3871
3872 r_symndx = ELFNN_R_SYM (rel->r_info);
3873 h = NULL;
3874 sym = NULL;
3875 sym_sec = NULL;
3876 undef_weak_ref = FALSE;
3877
3878 if (r_symndx < symtab_hdr->sh_info)
3879 {
3880 /* Reloc against local symbol. */
3881 asection *msec;
3882 sym = local_syms + r_symndx;
3883 sym_sec = local_sections[r_symndx];
3884 msec = sym_sec;
3885 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3886 if (!bfd_link_relocatable (info)
3887 && (sym_sec->flags & SEC_MERGE) != 0
3888 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3889 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3890 {
3891 struct elfNN_ia64_local_hash_entry *loc_h;
3892
3893 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3894 if (loc_h && ! loc_h->sec_merge_done)
3895 {
3896 struct elfNN_ia64_dyn_sym_info *dynent;
3897 unsigned int count;
3898
3899 for (count = loc_h->count, dynent = loc_h->info;
3900 count != 0;
3901 count--, dynent++)
3902 {
3903 msec = sym_sec;
3904 dynent->addend =
3905 _bfd_merged_section_offset (output_bfd, &msec,
3906 elf_section_data (msec)->
3907 sec_info,
3908 sym->st_value
3909 + dynent->addend);
3910 dynent->addend -= sym->st_value;
3911 dynent->addend += msec->output_section->vma
3912 + msec->output_offset
3913 - sym_sec->output_section->vma
3914 - sym_sec->output_offset;
3915 }
3916
3917 /* We may have introduced duplicated entries. We need
3918 to remove them properly. */
3919 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3920 if (count != loc_h->count)
3921 {
3922 loc_h->count = count;
3923 loc_h->sorted_count = count;
3924 }
3925
3926 loc_h->sec_merge_done = 1;
3927 }
3928 }
3929 }
3930 else
3931 {
3932 bfd_boolean unresolved_reloc;
3933 bfd_boolean warned, ignored;
3934 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3935
3936 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3937 r_symndx, symtab_hdr, sym_hashes,
3938 h, sym_sec, value,
3939 unresolved_reloc, warned, ignored);
3940
3941 if (h->root.type == bfd_link_hash_undefweak)
3942 undef_weak_ref = TRUE;
3943 else if (warned || (ignored && bfd_link_executable (info)))
3944 continue;
3945 }
3946
3947 if (sym_sec != NULL && discarded_section (sym_sec))
3948 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3949 rel, 1, relend, howto, 0, contents);
3950
3951 if (bfd_link_relocatable (info))
3952 continue;
3953
3954 hit_addr = contents + rel->r_offset;
3955 value += rel->r_addend;
3956 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3957
3958 switch (r_type)
3959 {
3960 case R_IA64_NONE:
3961 case R_IA64_LDXMOV:
3962 continue;
3963
3964 case R_IA64_IMM14:
3965 case R_IA64_IMM22:
3966 case R_IA64_IMM64:
3967 case R_IA64_DIR32MSB:
3968 case R_IA64_DIR32LSB:
3969 case R_IA64_DIR64MSB:
3970 case R_IA64_DIR64LSB:
3971 /* Install a dynamic relocation for this reloc. */
3972 if ((dynamic_symbol_p || bfd_link_pic (info))
3973 && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3974 && r_symndx != STN_UNDEF
3975 && (input_section->flags & SEC_ALLOC) != 0)
3976 {
3977 unsigned int dyn_r_type;
3978 long dynindx;
3979 bfd_vma addend;
3980
3981 BFD_ASSERT (srel != NULL);
3982
3983 switch (r_type)
3984 {
3985 case R_IA64_IMM14:
3986 case R_IA64_IMM22:
3987 case R_IA64_IMM64:
3988 /* ??? People shouldn't be doing non-pic code in
3989 shared libraries nor dynamic executables. */
3990 _bfd_error_handler
3991 /* xgettext:c-format */
3992 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
3993 input_bfd,
3994 h ? h->root.root.string
3995 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3996 sym_sec));
3997 ret_val = FALSE;
3998 continue;
3999
4000 default:
4001 break;
4002 }
4003
4004 /* If we don't need dynamic symbol lookup, find a
4005 matching RELATIVE relocation. */
4006 dyn_r_type = r_type;
4007 if (dynamic_symbol_p)
4008 {
4009 dynindx = h->dynindx;
4010 addend = rel->r_addend;
4011 value = 0;
4012 }
4013 else
4014 {
4015 switch (r_type)
4016 {
4017 case R_IA64_DIR32MSB:
4018 dyn_r_type = R_IA64_REL32MSB;
4019 break;
4020 case R_IA64_DIR32LSB:
4021 dyn_r_type = R_IA64_REL32LSB;
4022 break;
4023 case R_IA64_DIR64MSB:
4024 dyn_r_type = R_IA64_REL64MSB;
4025 break;
4026 case R_IA64_DIR64LSB:
4027 dyn_r_type = R_IA64_REL64LSB;
4028 break;
4029
4030 default:
4031 break;
4032 }
4033 dynindx = 0;
4034 addend = value;
4035 }
4036
4037 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4038 srel, rel->r_offset, dyn_r_type,
4039 dynindx, addend);
4040 }
4041 /* Fall through. */
4042
4043 case R_IA64_LTV32MSB:
4044 case R_IA64_LTV32LSB:
4045 case R_IA64_LTV64MSB:
4046 case R_IA64_LTV64LSB:
4047 r = ia64_elf_install_value (hit_addr, value, r_type);
4048 break;
4049
4050 case R_IA64_GPREL22:
4051 case R_IA64_GPREL64I:
4052 case R_IA64_GPREL32MSB:
4053 case R_IA64_GPREL32LSB:
4054 case R_IA64_GPREL64MSB:
4055 case R_IA64_GPREL64LSB:
4056 if (dynamic_symbol_p)
4057 {
4058 _bfd_error_handler
4059 /* xgettext:c-format */
4060 (_("%pB: @gprel relocation against dynamic symbol %s"),
4061 input_bfd,
4062 h ? h->root.root.string
4063 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4064 sym_sec));
4065 ret_val = FALSE;
4066 continue;
4067 }
4068 value -= gp_val;
4069 r = ia64_elf_install_value (hit_addr, value, r_type);
4070 break;
4071
4072 case R_IA64_LTOFF22:
4073 case R_IA64_LTOFF22X:
4074 case R_IA64_LTOFF64I:
4075 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4076 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4077 rel->r_addend, value, R_IA64_DIRNNLSB);
4078 value -= gp_val;
4079 r = ia64_elf_install_value (hit_addr, value, r_type);
4080 break;
4081
4082 case R_IA64_PLTOFF22:
4083 case R_IA64_PLTOFF64I:
4084 case R_IA64_PLTOFF64MSB:
4085 case R_IA64_PLTOFF64LSB:
4086 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4087 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4088 value -= gp_val;
4089 r = ia64_elf_install_value (hit_addr, value, r_type);
4090 break;
4091
4092 case R_IA64_FPTR64I:
4093 case R_IA64_FPTR32MSB:
4094 case R_IA64_FPTR32LSB:
4095 case R_IA64_FPTR64MSB:
4096 case R_IA64_FPTR64LSB:
4097 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4098 if (dyn_i->want_fptr)
4099 {
4100 if (!undef_weak_ref)
4101 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4102 }
4103 if (!dyn_i->want_fptr || bfd_link_pie (info))
4104 {
4105 long dynindx;
4106 unsigned int dyn_r_type = r_type;
4107 bfd_vma addend = rel->r_addend;
4108
4109 /* Otherwise, we expect the dynamic linker to create
4110 the entry. */
4111
4112 if (dyn_i->want_fptr)
4113 {
4114 if (r_type == R_IA64_FPTR64I)
4115 {
4116 /* We can't represent this without a dynamic symbol.
4117 Adjust the relocation to be against an output
4118 section symbol, which are always present in the
4119 dynamic symbol table. */
4120 /* ??? People shouldn't be doing non-pic code in
4121 shared libraries. Hork. */
4122 _bfd_error_handler
4123 (_("%pB: linking non-pic code in a position independent executable"),
4124 input_bfd);
4125 ret_val = FALSE;
4126 continue;
4127 }
4128 dynindx = 0;
4129 addend = value;
4130 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4131 }
4132 else if (h)
4133 {
4134 if (h->dynindx != -1)
4135 dynindx = h->dynindx;
4136 else
4137 dynindx = (_bfd_elf_link_lookup_local_dynindx
4138 (info, h->root.u.def.section->owner,
4139 global_sym_index (h)));
4140 value = 0;
4141 }
4142 else
4143 {
4144 dynindx = (_bfd_elf_link_lookup_local_dynindx
4145 (info, input_bfd, (long) r_symndx));
4146 value = 0;
4147 }
4148
4149 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4150 srel, rel->r_offset, dyn_r_type,
4151 dynindx, addend);
4152 }
4153
4154 r = ia64_elf_install_value (hit_addr, value, r_type);
4155 break;
4156
4157 case R_IA64_LTOFF_FPTR22:
4158 case R_IA64_LTOFF_FPTR64I:
4159 case R_IA64_LTOFF_FPTR32MSB:
4160 case R_IA64_LTOFF_FPTR32LSB:
4161 case R_IA64_LTOFF_FPTR64MSB:
4162 case R_IA64_LTOFF_FPTR64LSB:
4163 {
4164 long dynindx;
4165
4166 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4167 if (dyn_i->want_fptr)
4168 {
4169 BFD_ASSERT (h == NULL || h->dynindx == -1);
4170 if (!undef_weak_ref)
4171 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4172 dynindx = -1;
4173 }
4174 else
4175 {
4176 /* Otherwise, we expect the dynamic linker to create
4177 the entry. */
4178 if (h)
4179 {
4180 if (h->dynindx != -1)
4181 dynindx = h->dynindx;
4182 else
4183 dynindx = (_bfd_elf_link_lookup_local_dynindx
4184 (info, h->root.u.def.section->owner,
4185 global_sym_index (h)));
4186 }
4187 else
4188 dynindx = (_bfd_elf_link_lookup_local_dynindx
4189 (info, input_bfd, (long) r_symndx));
4190 value = 0;
4191 }
4192
4193 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4194 rel->r_addend, value, R_IA64_FPTRNNLSB);
4195 value -= gp_val;
4196 r = ia64_elf_install_value (hit_addr, value, r_type);
4197 }
4198 break;
4199
4200 case R_IA64_PCREL32MSB:
4201 case R_IA64_PCREL32LSB:
4202 case R_IA64_PCREL64MSB:
4203 case R_IA64_PCREL64LSB:
4204 /* Install a dynamic relocation for this reloc. */
4205 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4206 {
4207 BFD_ASSERT (srel != NULL);
4208
4209 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4210 srel, rel->r_offset, r_type,
4211 h->dynindx, rel->r_addend);
4212 }
4213 goto finish_pcrel;
4214
4215 case R_IA64_PCREL21B:
4216 case R_IA64_PCREL60B:
4217 /* We should have created a PLT entry for any dynamic symbol. */
4218 dyn_i = NULL;
4219 if (h)
4220 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4221
4222 if (dyn_i && dyn_i->want_plt2)
4223 {
4224 /* Should have caught this earlier. */
4225 BFD_ASSERT (rel->r_addend == 0);
4226
4227 value = (ia64_info->root.splt->output_section->vma
4228 + ia64_info->root.splt->output_offset
4229 + dyn_i->plt2_offset);
4230 }
4231 else
4232 {
4233 /* Since there's no PLT entry, Validate that this is
4234 locally defined. */
4235 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4236
4237 /* If the symbol is undef_weak, we shouldn't be trying
4238 to call it. There's every chance that we'd wind up
4239 with an out-of-range fixup here. Don't bother setting
4240 any value at all. */
4241 if (undef_weak_ref)
4242 continue;
4243 }
4244 goto finish_pcrel;
4245
4246 case R_IA64_PCREL21BI:
4247 case R_IA64_PCREL21F:
4248 case R_IA64_PCREL21M:
4249 case R_IA64_PCREL22:
4250 case R_IA64_PCREL64I:
4251 /* The PCREL21BI reloc is specifically not intended for use with
4252 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4253 fixup code, and thus probably ought not be dynamic. The
4254 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4255 if (dynamic_symbol_p)
4256 {
4257 const char *msg;
4258
4259 if (r_type == R_IA64_PCREL21BI)
4260 /* xgettext:c-format */
4261 msg = _("%pB: @internal branch to dynamic symbol %s");
4262 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4263 /* xgettext:c-format */
4264 msg = _("%pB: speculation fixup to dynamic symbol %s");
4265 else
4266 /* xgettext:c-format */
4267 msg = _("%pB: @pcrel relocation against dynamic symbol %s");
4268 _bfd_error_handler (msg, input_bfd,
4269 h ? h->root.root.string
4270 : bfd_elf_sym_name (input_bfd,
4271 symtab_hdr,
4272 sym,
4273 sym_sec));
4274 ret_val = FALSE;
4275 continue;
4276 }
4277 goto finish_pcrel;
4278
4279 finish_pcrel:
4280 /* Make pc-relative. */
4281 value -= (input_section->output_section->vma
4282 + input_section->output_offset
4283 + rel->r_offset) & ~ (bfd_vma) 0x3;
4284 r = ia64_elf_install_value (hit_addr, value, r_type);
4285 break;
4286
4287 case R_IA64_SEGREL32MSB:
4288 case R_IA64_SEGREL32LSB:
4289 case R_IA64_SEGREL64MSB:
4290 case R_IA64_SEGREL64LSB:
4291 {
4292 /* Find the segment that contains the output_section. */
4293 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4294 (output_bfd, input_section->output_section);
4295
4296 if (p == NULL)
4297 {
4298 r = bfd_reloc_notsupported;
4299 }
4300 else
4301 {
4302 /* The VMA of the segment is the vaddr of the associated
4303 program header. */
4304 if (value > p->p_vaddr)
4305 value -= p->p_vaddr;
4306 else
4307 value = 0;
4308 r = ia64_elf_install_value (hit_addr, value, r_type);
4309 }
4310 break;
4311 }
4312
4313 case R_IA64_SECREL32MSB:
4314 case R_IA64_SECREL32LSB:
4315 case R_IA64_SECREL64MSB:
4316 case R_IA64_SECREL64LSB:
4317 /* Make output-section relative to section where the symbol
4318 is defined. PR 475 */
4319 if (sym_sec)
4320 value -= sym_sec->output_section->vma;
4321 r = ia64_elf_install_value (hit_addr, value, r_type);
4322 break;
4323
4324 case R_IA64_IPLTMSB:
4325 case R_IA64_IPLTLSB:
4326 /* Install a dynamic relocation for this reloc. */
4327 if ((dynamic_symbol_p || bfd_link_pic (info))
4328 && (input_section->flags & SEC_ALLOC) != 0)
4329 {
4330 BFD_ASSERT (srel != NULL);
4331
4332 /* If we don't need dynamic symbol lookup, install two
4333 RELATIVE relocations. */
4334 if (!dynamic_symbol_p)
4335 {
4336 unsigned int dyn_r_type;
4337
4338 if (r_type == R_IA64_IPLTMSB)
4339 dyn_r_type = R_IA64_REL64MSB;
4340 else
4341 dyn_r_type = R_IA64_REL64LSB;
4342
4343 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4344 input_section,
4345 srel, rel->r_offset,
4346 dyn_r_type, 0, value);
4347 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4348 input_section,
4349 srel, rel->r_offset + 8,
4350 dyn_r_type, 0, gp_val);
4351 }
4352 else
4353 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4354 srel, rel->r_offset, r_type,
4355 h->dynindx, rel->r_addend);
4356 }
4357
4358 if (r_type == R_IA64_IPLTMSB)
4359 r_type = R_IA64_DIR64MSB;
4360 else
4361 r_type = R_IA64_DIR64LSB;
4362 ia64_elf_install_value (hit_addr, value, r_type);
4363 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4364 break;
4365
4366 case R_IA64_TPREL14:
4367 case R_IA64_TPREL22:
4368 case R_IA64_TPREL64I:
4369 if (elf_hash_table (info)->tls_sec == NULL)
4370 goto missing_tls_sec;
4371 value -= elfNN_ia64_tprel_base (info);
4372 r = ia64_elf_install_value (hit_addr, value, r_type);
4373 break;
4374
4375 case R_IA64_DTPREL14:
4376 case R_IA64_DTPREL22:
4377 case R_IA64_DTPREL64I:
4378 case R_IA64_DTPREL32LSB:
4379 case R_IA64_DTPREL32MSB:
4380 case R_IA64_DTPREL64LSB:
4381 case R_IA64_DTPREL64MSB:
4382 if (elf_hash_table (info)->tls_sec == NULL)
4383 goto missing_tls_sec;
4384 value -= elfNN_ia64_dtprel_base (info);
4385 r = ia64_elf_install_value (hit_addr, value, r_type);
4386 break;
4387
4388 case R_IA64_LTOFF_TPREL22:
4389 case R_IA64_LTOFF_DTPMOD22:
4390 case R_IA64_LTOFF_DTPREL22:
4391 {
4392 int got_r_type;
4393 long dynindx = h ? h->dynindx : -1;
4394 bfd_vma r_addend = rel->r_addend;
4395
4396 switch (r_type)
4397 {
4398 default:
4399 case R_IA64_LTOFF_TPREL22:
4400 if (!dynamic_symbol_p)
4401 {
4402 if (elf_hash_table (info)->tls_sec == NULL)
4403 goto missing_tls_sec;
4404 if (!bfd_link_pic (info))
4405 value -= elfNN_ia64_tprel_base (info);
4406 else
4407 {
4408 r_addend += value - elfNN_ia64_dtprel_base (info);
4409 dynindx = 0;
4410 }
4411 }
4412 got_r_type = R_IA64_TPREL64LSB;
4413 break;
4414 case R_IA64_LTOFF_DTPMOD22:
4415 if (!dynamic_symbol_p && !bfd_link_pic (info))
4416 value = 1;
4417 got_r_type = R_IA64_DTPMOD64LSB;
4418 break;
4419 case R_IA64_LTOFF_DTPREL22:
4420 if (!dynamic_symbol_p)
4421 {
4422 if (elf_hash_table (info)->tls_sec == NULL)
4423 goto missing_tls_sec;
4424 value -= elfNN_ia64_dtprel_base (info);
4425 }
4426 got_r_type = R_IA64_DTPRELNNLSB;
4427 break;
4428 }
4429 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4430 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4431 value, got_r_type);
4432 value -= gp_val;
4433 r = ia64_elf_install_value (hit_addr, value, r_type);
4434 }
4435 break;
4436
4437 default:
4438 r = bfd_reloc_notsupported;
4439 break;
4440 }
4441
4442 switch (r)
4443 {
4444 case bfd_reloc_ok:
4445 break;
4446
4447 case bfd_reloc_undefined:
4448 /* This can happen for global table relative relocs if
4449 __gp is undefined. This is a panic situation so we
4450 don't try to continue. */
4451 (*info->callbacks->undefined_symbol)
4452 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4453 return FALSE;
4454
4455 case bfd_reloc_notsupported:
4456 {
4457 const char *name;
4458
4459 if (h)
4460 name = h->root.root.string;
4461 else
4462 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4463 sym_sec);
4464 (*info->callbacks->warning) (info, _("unsupported reloc"),
4465 name, input_bfd,
4466 input_section, rel->r_offset);
4467 ret_val = FALSE;
4468 }
4469 break;
4470
4471 case bfd_reloc_dangerous:
4472 case bfd_reloc_outofrange:
4473 case bfd_reloc_overflow:
4474 default:
4475 missing_tls_sec:
4476 {
4477 const char *name;
4478
4479 if (h)
4480 name = h->root.root.string;
4481 else
4482 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4483 sym_sec);
4484
4485 switch (r_type)
4486 {
4487 case R_IA64_TPREL14:
4488 case R_IA64_TPREL22:
4489 case R_IA64_TPREL64I:
4490 case R_IA64_DTPREL14:
4491 case R_IA64_DTPREL22:
4492 case R_IA64_DTPREL64I:
4493 case R_IA64_DTPREL32LSB:
4494 case R_IA64_DTPREL32MSB:
4495 case R_IA64_DTPREL64LSB:
4496 case R_IA64_DTPREL64MSB:
4497 case R_IA64_LTOFF_TPREL22:
4498 case R_IA64_LTOFF_DTPMOD22:
4499 case R_IA64_LTOFF_DTPREL22:
4500 _bfd_error_handler
4501 /* xgettext:c-format */
4502 (_("%pB: missing TLS section for relocation %s against `%s'"
4503 " at %#" PRIx64 " in section `%pA'."),
4504 input_bfd, howto->name, name,
4505 (uint64_t) rel->r_offset, input_section);
4506 break;
4507
4508 case R_IA64_PCREL21B:
4509 case R_IA64_PCREL21BI:
4510 case R_IA64_PCREL21M:
4511 case R_IA64_PCREL21F:
4512 if (is_elf_hash_table (info->hash))
4513 {
4514 /* Relaxtion is always performed for ELF output.
4515 Overflow failures for those relocations mean
4516 that the section is too big to relax. */
4517 _bfd_error_handler
4518 /* xgettext:c-format */
4519 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4520 " in section `%pA' with size %#" PRIx64
4521 " (> 0x1000000)."),
4522 input_bfd, howto->name, name, (uint64_t) rel->r_offset,
4523 input_section, (uint64_t) input_section->size);
4524 break;
4525 }
4526 /* Fall through. */
4527 default:
4528 (*info->callbacks->reloc_overflow) (info,
4529 &h->root,
4530 name,
4531 howto->name,
4532 (bfd_vma) 0,
4533 input_bfd,
4534 input_section,
4535 rel->r_offset);
4536 break;
4537 }
4538
4539 ret_val = FALSE;
4540 }
4541 break;
4542 }
4543 }
4544
4545 return ret_val;
4546 }
4547
4548 static bfd_boolean
4549 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4550 struct bfd_link_info *info,
4551 struct elf_link_hash_entry *h,
4552 Elf_Internal_Sym *sym)
4553 {
4554 struct elfNN_ia64_link_hash_table *ia64_info;
4555 struct elfNN_ia64_dyn_sym_info *dyn_i;
4556
4557 ia64_info = elfNN_ia64_hash_table (info);
4558 if (ia64_info == NULL)
4559 return FALSE;
4560
4561 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4562
4563 /* Fill in the PLT data, if required. */
4564 if (dyn_i && dyn_i->want_plt)
4565 {
4566 Elf_Internal_Rela outrel;
4567 bfd_byte *loc;
4568 asection *plt_sec;
4569 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4570
4571 gp_val = _bfd_get_gp_value (output_bfd);
4572
4573 /* Initialize the minimal PLT entry. */
4574
4575 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4576 plt_sec = ia64_info->root.splt;
4577 loc = plt_sec->contents + dyn_i->plt_offset;
4578
4579 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4580 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4581 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4582
4583 plt_addr = (plt_sec->output_section->vma
4584 + plt_sec->output_offset
4585 + dyn_i->plt_offset);
4586 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4587
4588 /* Initialize the FULL PLT entry, if needed. */
4589 if (dyn_i->want_plt2)
4590 {
4591 loc = plt_sec->contents + dyn_i->plt2_offset;
4592
4593 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4594 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4595
4596 /* Mark the symbol as undefined, rather than as defined in the
4597 plt section. Leave the value alone. */
4598 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4599 first place. But perhaps elflink.c did some for us. */
4600 if (!h->def_regular)
4601 sym->st_shndx = SHN_UNDEF;
4602 }
4603
4604 /* Create the dynamic relocation. */
4605 outrel.r_offset = pltoff_addr;
4606 if (bfd_little_endian (output_bfd))
4607 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4608 else
4609 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4610 outrel.r_addend = 0;
4611
4612 /* This is fun. In the .IA_64.pltoff section, we've got entries
4613 that correspond both to real PLT entries, and those that
4614 happened to resolve to local symbols but need to be created
4615 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4616 relocations for the real PLT should come at the end of the
4617 section, so that they can be indexed by plt entry at runtime.
4618
4619 We emitted all of the relocations for the non-PLT @pltoff
4620 entries during relocate_section. So we can consider the
4621 existing sec->reloc_count to be the base of the array of
4622 PLT relocations. */
4623
4624 loc = ia64_info->rel_pltoff_sec->contents;
4625 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4626 * sizeof (ElfNN_External_Rela));
4627 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4628 }
4629
4630 /* Mark some specially defined symbols as absolute. */
4631 if (h == ia64_info->root.hdynamic
4632 || h == ia64_info->root.hgot
4633 || h == ia64_info->root.hplt)
4634 sym->st_shndx = SHN_ABS;
4635
4636 return TRUE;
4637 }
4638
4639 static bfd_boolean
4640 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4641 struct bfd_link_info *info)
4642 {
4643 struct elfNN_ia64_link_hash_table *ia64_info;
4644 bfd *dynobj;
4645
4646 ia64_info = elfNN_ia64_hash_table (info);
4647 if (ia64_info == NULL)
4648 return FALSE;
4649
4650 dynobj = ia64_info->root.dynobj;
4651
4652 if (ia64_info->root.dynamic_sections_created)
4653 {
4654 ElfNN_External_Dyn *dyncon, *dynconend;
4655 asection *sdyn, *sgotplt;
4656 bfd_vma gp_val;
4657
4658 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4659 sgotplt = ia64_info->root.sgotplt;
4660 BFD_ASSERT (sdyn != NULL);
4661 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4662 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4663
4664 gp_val = _bfd_get_gp_value (abfd);
4665
4666 for (; dyncon < dynconend; dyncon++)
4667 {
4668 Elf_Internal_Dyn dyn;
4669
4670 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4671
4672 switch (dyn.d_tag)
4673 {
4674 case DT_PLTGOT:
4675 dyn.d_un.d_ptr = gp_val;
4676 break;
4677
4678 case DT_PLTRELSZ:
4679 dyn.d_un.d_val = (ia64_info->minplt_entries
4680 * sizeof (ElfNN_External_Rela));
4681 break;
4682
4683 case DT_JMPREL:
4684 /* See the comment above in finish_dynamic_symbol. */
4685 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4686 + ia64_info->rel_pltoff_sec->output_offset
4687 + (ia64_info->rel_pltoff_sec->reloc_count
4688 * sizeof (ElfNN_External_Rela)));
4689 break;
4690
4691 case DT_IA_64_PLT_RESERVE:
4692 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4693 + sgotplt->output_offset);
4694 break;
4695 }
4696
4697 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4698 }
4699
4700 /* Initialize the PLT0 entry. */
4701 if (ia64_info->root.splt)
4702 {
4703 bfd_byte *loc = ia64_info->root.splt->contents;
4704 bfd_vma pltres;
4705
4706 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4707
4708 pltres = (sgotplt->output_section->vma
4709 + sgotplt->output_offset
4710 - gp_val);
4711
4712 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4713 }
4714 }
4715
4716 return TRUE;
4717 }
4718 \f
4719 /* ELF file flag handling: */
4720
4721 /* Function to keep IA-64 specific file flags. */
4722 static bfd_boolean
4723 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4724 {
4725 BFD_ASSERT (!elf_flags_init (abfd)
4726 || elf_elfheader (abfd)->e_flags == flags);
4727
4728 elf_elfheader (abfd)->e_flags = flags;
4729 elf_flags_init (abfd) = TRUE;
4730 return TRUE;
4731 }
4732
4733 /* Merge backend specific data from an object file to the output
4734 object file when linking. */
4735 static bfd_boolean
4736 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4737 {
4738 bfd *obfd = info->output_bfd;
4739 flagword out_flags;
4740 flagword in_flags;
4741 bfd_boolean ok = TRUE;
4742
4743 /* Don't even pretend to support mixed-format linking. */
4744 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4745 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4746 return FALSE;
4747
4748 in_flags = elf_elfheader (ibfd)->e_flags;
4749 out_flags = elf_elfheader (obfd)->e_flags;
4750
4751 if (! elf_flags_init (obfd))
4752 {
4753 elf_flags_init (obfd) = TRUE;
4754 elf_elfheader (obfd)->e_flags = in_flags;
4755
4756 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4757 && bfd_get_arch_info (obfd)->the_default)
4758 {
4759 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4760 bfd_get_mach (ibfd));
4761 }
4762
4763 return TRUE;
4764 }
4765
4766 /* Check flag compatibility. */
4767 if (in_flags == out_flags)
4768 return TRUE;
4769
4770 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4771 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4772 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4773
4774 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4775 {
4776 _bfd_error_handler
4777 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
4778 ibfd);
4779
4780 bfd_set_error (bfd_error_bad_value);
4781 ok = FALSE;
4782 }
4783 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4784 {
4785 _bfd_error_handler
4786 (_("%pB: linking big-endian files with little-endian files"),
4787 ibfd);
4788
4789 bfd_set_error (bfd_error_bad_value);
4790 ok = FALSE;
4791 }
4792 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4793 {
4794 _bfd_error_handler
4795 (_("%pB: linking 64-bit files with 32-bit files"),
4796 ibfd);
4797
4798 bfd_set_error (bfd_error_bad_value);
4799 ok = FALSE;
4800 }
4801 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4802 {
4803 _bfd_error_handler
4804 (_("%pB: linking constant-gp files with non-constant-gp files"),
4805 ibfd);
4806
4807 bfd_set_error (bfd_error_bad_value);
4808 ok = FALSE;
4809 }
4810 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4811 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4812 {
4813 _bfd_error_handler
4814 (_("%pB: linking auto-pic files with non-auto-pic files"),
4815 ibfd);
4816
4817 bfd_set_error (bfd_error_bad_value);
4818 ok = FALSE;
4819 }
4820
4821 return ok;
4822 }
4823
4824 static bfd_boolean
4825 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4826 {
4827 FILE *file = (FILE *) ptr;
4828 flagword flags = elf_elfheader (abfd)->e_flags;
4829
4830 BFD_ASSERT (abfd != NULL && ptr != NULL);
4831
4832 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4833 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4834 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4835 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4836 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4837 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4838 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4839 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4840 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4841
4842 _bfd_elf_print_private_bfd_data (abfd, ptr);
4843 return TRUE;
4844 }
4845
4846 static enum elf_reloc_type_class
4847 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4848 const asection *rel_sec ATTRIBUTE_UNUSED,
4849 const Elf_Internal_Rela *rela)
4850 {
4851 switch ((int) ELFNN_R_TYPE (rela->r_info))
4852 {
4853 case R_IA64_REL32MSB:
4854 case R_IA64_REL32LSB:
4855 case R_IA64_REL64MSB:
4856 case R_IA64_REL64LSB:
4857 return reloc_class_relative;
4858 case R_IA64_IPLTMSB:
4859 case R_IA64_IPLTLSB:
4860 return reloc_class_plt;
4861 case R_IA64_COPY:
4862 return reloc_class_copy;
4863 default:
4864 return reloc_class_normal;
4865 }
4866 }
4867
4868 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4869 {
4870 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4871 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4872 { NULL, 0, 0, 0, 0 }
4873 };
4874
4875 static bfd_boolean
4876 elfNN_ia64_object_p (bfd *abfd)
4877 {
4878 asection *sec;
4879 asection *group, *unwi, *unw;
4880 flagword flags;
4881 const char *name;
4882 char *unwi_name, *unw_name;
4883 bfd_size_type amt;
4884
4885 if (abfd->flags & DYNAMIC)
4886 return TRUE;
4887
4888 /* Flags for fake group section. */
4889 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4890 | SEC_EXCLUDE);
4891
4892 /* We add a fake section group for each .gnu.linkonce.t.* section,
4893 which isn't in a section group, and its unwind sections. */
4894 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4895 {
4896 if (elf_sec_group (sec) == NULL
4897 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4898 == (SEC_LINK_ONCE | SEC_CODE))
4899 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4900 {
4901 name = sec->name + 16;
4902
4903 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4904 unwi_name = bfd_alloc (abfd, amt);
4905 if (!unwi_name)
4906 return FALSE;
4907
4908 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4909 unwi = bfd_get_section_by_name (abfd, unwi_name);
4910
4911 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4912 unw_name = bfd_alloc (abfd, amt);
4913 if (!unw_name)
4914 return FALSE;
4915
4916 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4917 unw = bfd_get_section_by_name (abfd, unw_name);
4918
4919 /* We need to create a fake group section for it and its
4920 unwind sections. */
4921 group = bfd_make_section_anyway_with_flags (abfd, name,
4922 flags);
4923 if (group == NULL)
4924 return FALSE;
4925
4926 /* Move the fake group section to the beginning. */
4927 bfd_section_list_remove (abfd, group);
4928 bfd_section_list_prepend (abfd, group);
4929
4930 elf_next_in_group (group) = sec;
4931
4932 elf_group_name (sec) = name;
4933 elf_next_in_group (sec) = sec;
4934 elf_sec_group (sec) = group;
4935
4936 if (unwi)
4937 {
4938 elf_group_name (unwi) = name;
4939 elf_next_in_group (unwi) = sec;
4940 elf_next_in_group (sec) = unwi;
4941 elf_sec_group (unwi) = group;
4942 }
4943
4944 if (unw)
4945 {
4946 elf_group_name (unw) = name;
4947 if (unwi)
4948 {
4949 elf_next_in_group (unw) = elf_next_in_group (unwi);
4950 elf_next_in_group (unwi) = unw;
4951 }
4952 else
4953 {
4954 elf_next_in_group (unw) = sec;
4955 elf_next_in_group (sec) = unw;
4956 }
4957 elf_sec_group (unw) = group;
4958 }
4959
4960 /* Fake SHT_GROUP section header. */
4961 elf_section_data (group)->this_hdr.bfd_section = group;
4962 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4963 }
4964 }
4965 return TRUE;
4966 }
4967
4968 static bfd_boolean
4969 elfNN_ia64_hpux_vec (const bfd_target *vec)
4970 {
4971 extern const bfd_target ia64_elfNN_hpux_be_vec;
4972 return (vec == &ia64_elfNN_hpux_be_vec);
4973 }
4974
4975 static bfd_boolean
4976 elfNN_hpux_init_file_header (bfd *abfd, struct bfd_link_info *info)
4977 {
4978 Elf_Internal_Ehdr *i_ehdrp;
4979
4980 if (!_bfd_elf_init_file_header (abfd, info))
4981 return FALSE;
4982
4983 i_ehdrp = elf_elfheader (abfd);
4984 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4985 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4986 return TRUE;
4987 }
4988
4989 static bfd_boolean
4990 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4991 asection *sec, int *retval)
4992 {
4993 if (bfd_is_com_section (sec))
4994 {
4995 *retval = SHN_IA_64_ANSI_COMMON;
4996 return TRUE;
4997 }
4998 return FALSE;
4999 }
5000
5001 static void
5002 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5003 asymbol *asym)
5004 {
5005 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5006
5007 switch (elfsym->internal_elf_sym.st_shndx)
5008 {
5009 case SHN_IA_64_ANSI_COMMON:
5010 asym->section = bfd_com_section_ptr;
5011 asym->value = elfsym->internal_elf_sym.st_size;
5012 asym->flags &= ~BSF_GLOBAL;
5013 break;
5014 }
5015 }
5016 \f
5017 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
5018 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5019 #define TARGET_BIG_SYM ia64_elfNN_be_vec
5020 #define TARGET_BIG_NAME "elfNN-ia64-big"
5021 #define ELF_ARCH bfd_arch_ia64
5022 #define ELF_TARGET_ID IA64_ELF_DATA
5023 #define ELF_MACHINE_CODE EM_IA_64
5024 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5025 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5026 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5027 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5028
5029 #define elf_backend_section_from_shdr \
5030 elfNN_ia64_section_from_shdr
5031 #define elf_backend_section_flags \
5032 elfNN_ia64_section_flags
5033 #define elf_backend_fake_sections \
5034 elfNN_ia64_fake_sections
5035 #define elf_backend_final_write_processing \
5036 elfNN_ia64_final_write_processing
5037 #define elf_backend_add_symbol_hook \
5038 elfNN_ia64_add_symbol_hook
5039 #define elf_backend_additional_program_headers \
5040 elfNN_ia64_additional_program_headers
5041 #define elf_backend_modify_segment_map \
5042 elfNN_ia64_modify_segment_map
5043 #define elf_backend_modify_headers \
5044 elfNN_ia64_modify_headers
5045 #define elf_info_to_howto \
5046 elfNN_ia64_info_to_howto
5047
5048 #define bfd_elfNN_bfd_reloc_type_lookup \
5049 ia64_elf_reloc_type_lookup
5050 #define bfd_elfNN_bfd_reloc_name_lookup \
5051 ia64_elf_reloc_name_lookup
5052 #define bfd_elfNN_bfd_is_local_label_name \
5053 elfNN_ia64_is_local_label_name
5054 #define bfd_elfNN_bfd_relax_section \
5055 elfNN_ia64_relax_section
5056
5057 #define elf_backend_object_p \
5058 elfNN_ia64_object_p
5059
5060 /* Stuff for the BFD linker: */
5061 #define bfd_elfNN_bfd_link_hash_table_create \
5062 elfNN_ia64_hash_table_create
5063 #define elf_backend_create_dynamic_sections \
5064 elfNN_ia64_create_dynamic_sections
5065 #define elf_backend_check_relocs \
5066 elfNN_ia64_check_relocs
5067 #define elf_backend_adjust_dynamic_symbol \
5068 elfNN_ia64_adjust_dynamic_symbol
5069 #define elf_backend_size_dynamic_sections \
5070 elfNN_ia64_size_dynamic_sections
5071 #define elf_backend_omit_section_dynsym \
5072 _bfd_elf_omit_section_dynsym_all
5073 #define elf_backend_relocate_section \
5074 elfNN_ia64_relocate_section
5075 #define elf_backend_finish_dynamic_symbol \
5076 elfNN_ia64_finish_dynamic_symbol
5077 #define elf_backend_finish_dynamic_sections \
5078 elfNN_ia64_finish_dynamic_sections
5079 #define bfd_elfNN_bfd_final_link \
5080 elfNN_ia64_final_link
5081
5082 #define bfd_elfNN_bfd_merge_private_bfd_data \
5083 elfNN_ia64_merge_private_bfd_data
5084 #define bfd_elfNN_bfd_set_private_flags \
5085 elfNN_ia64_set_private_flags
5086 #define bfd_elfNN_bfd_print_private_bfd_data \
5087 elfNN_ia64_print_private_bfd_data
5088
5089 #define elf_backend_plt_readonly 1
5090 #define elf_backend_can_gc_sections 1
5091 #define elf_backend_want_plt_sym 0
5092 #define elf_backend_plt_alignment 5
5093 #define elf_backend_got_header_size 0
5094 #define elf_backend_want_got_plt 1
5095 #define elf_backend_may_use_rel_p 1
5096 #define elf_backend_may_use_rela_p 1
5097 #define elf_backend_default_use_rela_p 1
5098 #define elf_backend_want_dynbss 0
5099 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5100 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5101 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5102 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5103 #define elf_backend_rela_normal 1
5104 #define elf_backend_dtrel_excludes_plt 1
5105 #define elf_backend_special_sections elfNN_ia64_special_sections
5106 #define elf_backend_default_execstack 0
5107
5108 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5109 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5110 We don't want to flood users with so many error messages. We turn
5111 off the warning for now. It will be turned on later when the Intel
5112 compiler is fixed. */
5113 #define elf_backend_link_order_error_handler NULL
5114
5115 #include "elfNN-target.h"
5116
5117 /* HPUX-specific vectors. */
5118
5119 #undef TARGET_LITTLE_SYM
5120 #undef TARGET_LITTLE_NAME
5121 #undef TARGET_BIG_SYM
5122 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5123 #undef TARGET_BIG_NAME
5124 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5125
5126 /* These are HP-UX specific functions. */
5127
5128 #undef elf_backend_init_file_header
5129 #define elf_backend_init_file_header elfNN_hpux_init_file_header
5130
5131 #undef elf_backend_section_from_bfd_section
5132 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5133
5134 #undef elf_backend_symbol_processing
5135 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5136
5137 #undef elf_backend_want_p_paddr_set_to_zero
5138 #define elf_backend_want_p_paddr_set_to_zero 1
5139
5140 #undef ELF_COMMONPAGESIZE
5141 #undef ELF_OSABI
5142 #define ELF_OSABI ELFOSABI_HPUX
5143
5144 #undef elfNN_bed
5145 #define elfNN_bed elfNN_ia64_hpux_bed
5146
5147 #include "elfNN-target.h"
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