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1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2020 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 #define is_ia64_elf(bfd) \
43 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
44 && elf_object_id (bfd) == IA64_ELF_DATA)
45
46 typedef struct bfd_hash_entry *(*new_hash_entry_func)
47 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
48
49 /* In dynamically (linker-) created sections, we generally need to keep track
50 of the place a symbol or expression got allocated to. This is done via hash
51 tables that store entries of the following type. */
52
53 struct elfNN_ia64_dyn_sym_info
54 {
55 /* The addend for which this entry is relevant. */
56 bfd_vma addend;
57
58 bfd_vma got_offset;
59 bfd_vma fptr_offset;
60 bfd_vma pltoff_offset;
61 bfd_vma plt_offset;
62 bfd_vma plt2_offset;
63 bfd_vma tprel_offset;
64 bfd_vma dtpmod_offset;
65 bfd_vma dtprel_offset;
66
67 /* The symbol table entry, if any, that this was derived from. */
68 struct elf_link_hash_entry *h;
69
70 /* Used to count non-got, non-plt relocations for delayed sizing
71 of relocation sections. */
72 struct elfNN_ia64_dyn_reloc_entry
73 {
74 struct elfNN_ia64_dyn_reloc_entry *next;
75 asection *srel;
76 int type;
77 int count;
78
79 /* Is this reloc against readonly section? */
80 bfd_boolean reltext;
81 } *reloc_entries;
82
83 /* TRUE when the section contents have been updated. */
84 unsigned got_done : 1;
85 unsigned fptr_done : 1;
86 unsigned pltoff_done : 1;
87 unsigned tprel_done : 1;
88 unsigned dtpmod_done : 1;
89 unsigned dtprel_done : 1;
90
91 /* TRUE for the different kinds of linker data we want created. */
92 unsigned want_got : 1;
93 unsigned want_gotx : 1;
94 unsigned want_fptr : 1;
95 unsigned want_ltoff_fptr : 1;
96 unsigned want_plt : 1;
97 unsigned want_plt2 : 1;
98 unsigned want_pltoff : 1;
99 unsigned want_tprel : 1;
100 unsigned want_dtpmod : 1;
101 unsigned want_dtprel : 1;
102 };
103
104 struct elfNN_ia64_local_hash_entry
105 {
106 int id;
107 unsigned int r_sym;
108 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
109 unsigned int count;
110 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
111 unsigned int sorted_count;
112 /* The size of elfNN_ia64_dyn_sym_info array. */
113 unsigned int size;
114 /* The array of elfNN_ia64_dyn_sym_info. */
115 struct elfNN_ia64_dyn_sym_info *info;
116
117 /* TRUE if this hash entry's addends was translated for
118 SHF_MERGE optimization. */
119 unsigned sec_merge_done : 1;
120 };
121
122 struct elfNN_ia64_link_hash_entry
123 {
124 struct elf_link_hash_entry root;
125 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
126 unsigned int count;
127 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
128 unsigned int sorted_count;
129 /* The size of elfNN_ia64_dyn_sym_info array. */
130 unsigned int size;
131 /* The array of elfNN_ia64_dyn_sym_info. */
132 struct elfNN_ia64_dyn_sym_info *info;
133 };
134
135 struct elfNN_ia64_link_hash_table
136 {
137 /* The main hash table. */
138 struct elf_link_hash_table root;
139
140 asection *fptr_sec; /* Function descriptor table (or NULL). */
141 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
142 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
143 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
144
145 bfd_size_type minplt_entries; /* Number of minplt entries. */
146 unsigned reltext : 1; /* Are there relocs against readonly sections? */
147 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
148 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
149 /* There are maybe R_IA64_GPREL22 relocations, including those
150 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
151 sections. We need to record those sections so that we can choose
152 a proper GP to cover all R_IA64_GPREL22 relocations. */
153 asection *max_short_sec; /* Maximum short output section. */
154 bfd_vma max_short_offset; /* Maximum short offset. */
155 asection *min_short_sec; /* Minimum short output section. */
156 bfd_vma min_short_offset; /* Minimum short offset. */
157
158 htab_t loc_hash_table;
159 void *loc_hash_memory;
160 };
161
162 struct elfNN_ia64_allocate_data
163 {
164 struct bfd_link_info *info;
165 bfd_size_type ofs;
166 bfd_boolean only_got;
167 };
168
169 #define elfNN_ia64_hash_table(p) \
170 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
171 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
172
173 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
174 (struct elfNN_ia64_link_hash_table *ia64_info,
175 struct elf_link_hash_entry *h,
176 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
177 static bfd_boolean elfNN_ia64_dynamic_symbol_p
178 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
179 static bfd_boolean elfNN_ia64_choose_gp
180 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
181 static void elfNN_ia64_dyn_sym_traverse
182 (struct elfNN_ia64_link_hash_table *ia64_info,
183 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
184 void * info);
185 static bfd_boolean allocate_global_data_got
186 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
187 static bfd_boolean allocate_global_fptr_got
188 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
189 static bfd_boolean allocate_local_got
190 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
191 static bfd_boolean elfNN_ia64_hpux_vec
192 (const bfd_target *vec);
193 static bfd_boolean allocate_dynrel_entries
194 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
195 static asection *get_pltoff
196 (bfd *abfd, struct bfd_link_info *info,
197 struct elfNN_ia64_link_hash_table *ia64_info);
198 \f
199 /* ia64-specific relocation. */
200
201 /* Given a ELF reloc, return the matching HOWTO structure. */
202
203 static bfd_boolean
204 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
205 arelent *bfd_reloc,
206 Elf_Internal_Rela *elf_reloc)
207 {
208 unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info);
209
210 bfd_reloc->howto = ia64_elf_lookup_howto (r_type);
211 if (bfd_reloc->howto == NULL)
212 {
213 /* xgettext:c-format */
214 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
215 abfd, r_type);
216 bfd_set_error (bfd_error_bad_value);
217 return FALSE;
218 }
219
220 return TRUE;
221 }
222 \f
223 #define PLT_HEADER_SIZE (3 * 16)
224 #define PLT_MIN_ENTRY_SIZE (1 * 16)
225 #define PLT_FULL_ENTRY_SIZE (2 * 16)
226 #define PLT_RESERVED_WORDS 3
227
228 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
229 {
230 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
231 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
232 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
233 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
234 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
235 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
236 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
237 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
238 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
239 };
240
241 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
242 {
243 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
244 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
245 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
246 };
247
248 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
249 {
250 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
251 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
252 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
253 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
254 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
255 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
256 };
257
258 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
259
260 static const bfd_byte oor_brl[16] =
261 {
262 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
263 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
264 0x00, 0x00, 0x00, 0xc0
265 };
266
267 static const bfd_byte oor_ip[48] =
268 {
269 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
270 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
271 0x01, 0x00, 0x00, 0x60,
272 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
273 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
274 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
275 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
276 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
277 0x60, 0x00, 0x80, 0x00 /* br b6;; */
278 };
279
280 static size_t oor_branch_size = sizeof (oor_brl);
281
282 void
283 bfd_elfNN_ia64_after_parse (int itanium)
284 {
285 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
286 }
287 \f
288
289 /* Rename some of the generic section flags to better document how they
290 are used here. */
291 #define skip_relax_pass_0 sec_flg0
292 #define skip_relax_pass_1 sec_flg1
293
294 /* These functions do relaxation for IA-64 ELF. */
295
296 static void
297 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
298 struct elfNN_ia64_link_hash_table *ia64_info)
299 {
300 /* Skip ABS and SHF_IA_64_SHORT sections. */
301 if (sec == bfd_abs_section_ptr
302 || (sec->flags & SEC_SMALL_DATA) != 0)
303 return;
304
305 if (!ia64_info->min_short_sec)
306 {
307 ia64_info->max_short_sec = sec;
308 ia64_info->max_short_offset = offset;
309 ia64_info->min_short_sec = sec;
310 ia64_info->min_short_offset = offset;
311 }
312 else if (sec == ia64_info->max_short_sec
313 && offset > ia64_info->max_short_offset)
314 ia64_info->max_short_offset = offset;
315 else if (sec == ia64_info->min_short_sec
316 && offset < ia64_info->min_short_offset)
317 ia64_info->min_short_offset = offset;
318 else if (sec->output_section->vma
319 > ia64_info->max_short_sec->vma)
320 {
321 ia64_info->max_short_sec = sec;
322 ia64_info->max_short_offset = offset;
323 }
324 else if (sec->output_section->vma
325 < ia64_info->min_short_sec->vma)
326 {
327 ia64_info->min_short_sec = sec;
328 ia64_info->min_short_offset = offset;
329 }
330 }
331
332 static bfd_boolean
333 elfNN_ia64_relax_section (bfd *abfd, asection *sec,
334 struct bfd_link_info *link_info,
335 bfd_boolean *again)
336 {
337 struct one_fixup
338 {
339 struct one_fixup *next;
340 asection *tsec;
341 bfd_vma toff;
342 bfd_vma trampoff;
343 };
344
345 Elf_Internal_Shdr *symtab_hdr;
346 Elf_Internal_Rela *internal_relocs;
347 Elf_Internal_Rela *irel, *irelend;
348 bfd_byte *contents;
349 Elf_Internal_Sym *isymbuf = NULL;
350 struct elfNN_ia64_link_hash_table *ia64_info;
351 struct one_fixup *fixups = NULL;
352 bfd_boolean changed_contents = FALSE;
353 bfd_boolean changed_relocs = FALSE;
354 bfd_boolean changed_got = FALSE;
355 bfd_boolean skip_relax_pass_0 = TRUE;
356 bfd_boolean skip_relax_pass_1 = TRUE;
357 bfd_vma gp = 0;
358
359 /* Assume we're not going to change any sizes, and we'll only need
360 one pass. */
361 *again = FALSE;
362
363 if (bfd_link_relocatable (link_info))
364 (*link_info->callbacks->einfo)
365 (_("%P%F: --relax and -r may not be used together\n"));
366
367 /* Don't even try to relax for non-ELF outputs. */
368 if (!is_elf_hash_table (link_info->hash))
369 return FALSE;
370
371 /* Nothing to do if there are no relocations or there is no need for
372 the current pass. */
373 if ((sec->flags & SEC_RELOC) == 0
374 || sec->reloc_count == 0
375 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
376 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
377 return TRUE;
378
379 ia64_info = elfNN_ia64_hash_table (link_info);
380 if (ia64_info == NULL)
381 return FALSE;
382
383 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
384
385 /* Load the relocations for this section. */
386 internal_relocs = (_bfd_elf_link_read_relocs
387 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
388 link_info->keep_memory));
389 if (internal_relocs == NULL)
390 return FALSE;
391
392 irelend = internal_relocs + sec->reloc_count;
393
394 /* Get the section contents. */
395 if (elf_section_data (sec)->this_hdr.contents != NULL)
396 contents = elf_section_data (sec)->this_hdr.contents;
397 else
398 {
399 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
400 goto error_return;
401 }
402
403 for (irel = internal_relocs; irel < irelend; irel++)
404 {
405 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
406 bfd_vma symaddr, reladdr, trampoff, toff, roff;
407 asection *tsec;
408 struct one_fixup *f;
409 bfd_size_type amt;
410 bfd_boolean is_branch;
411 struct elfNN_ia64_dyn_sym_info *dyn_i;
412 char symtype;
413
414 switch (r_type)
415 {
416 case R_IA64_PCREL21B:
417 case R_IA64_PCREL21BI:
418 case R_IA64_PCREL21M:
419 case R_IA64_PCREL21F:
420 /* In pass 1, all br relaxations are done. We can skip it. */
421 if (link_info->relax_pass == 1)
422 continue;
423 skip_relax_pass_0 = FALSE;
424 is_branch = TRUE;
425 break;
426
427 case R_IA64_PCREL60B:
428 /* We can't optimize brl to br in pass 0 since br relaxations
429 will increase the code size. Defer it to pass 1. */
430 if (link_info->relax_pass == 0)
431 {
432 skip_relax_pass_1 = FALSE;
433 continue;
434 }
435 is_branch = TRUE;
436 break;
437
438 case R_IA64_GPREL22:
439 /* Update max_short_sec/min_short_sec. */
440
441 case R_IA64_LTOFF22X:
442 case R_IA64_LDXMOV:
443 /* We can't relax ldx/mov in pass 0 since br relaxations will
444 increase the code size. Defer it to pass 1. */
445 if (link_info->relax_pass == 0)
446 {
447 skip_relax_pass_1 = FALSE;
448 continue;
449 }
450 is_branch = FALSE;
451 break;
452
453 default:
454 continue;
455 }
456
457 /* Get the value of the symbol referred to by the reloc. */
458 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
459 {
460 /* A local symbol. */
461 Elf_Internal_Sym *isym;
462
463 /* Read this BFD's local symbols. */
464 if (isymbuf == NULL)
465 {
466 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
467 if (isymbuf == NULL)
468 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
469 symtab_hdr->sh_info, 0,
470 NULL, NULL, NULL);
471 if (isymbuf == 0)
472 goto error_return;
473 }
474
475 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
476 if (isym->st_shndx == SHN_UNDEF)
477 continue; /* We can't do anything with undefined symbols. */
478 else if (isym->st_shndx == SHN_ABS)
479 tsec = bfd_abs_section_ptr;
480 else if (isym->st_shndx == SHN_COMMON)
481 tsec = bfd_com_section_ptr;
482 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
483 tsec = bfd_com_section_ptr;
484 else
485 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
486
487 toff = isym->st_value;
488 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
489 symtype = ELF_ST_TYPE (isym->st_info);
490 }
491 else
492 {
493 unsigned long indx;
494 struct elf_link_hash_entry *h;
495
496 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
497 h = elf_sym_hashes (abfd)[indx];
498 BFD_ASSERT (h != NULL);
499
500 while (h->root.type == bfd_link_hash_indirect
501 || h->root.type == bfd_link_hash_warning)
502 h = (struct elf_link_hash_entry *) h->root.u.i.link;
503
504 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
505
506 /* For branches to dynamic symbols, we're interested instead
507 in a branch to the PLT entry. */
508 if (is_branch && dyn_i && dyn_i->want_plt2)
509 {
510 /* Internal branches shouldn't be sent to the PLT.
511 Leave this for now and we'll give an error later. */
512 if (r_type != R_IA64_PCREL21B)
513 continue;
514
515 tsec = ia64_info->root.splt;
516 toff = dyn_i->plt2_offset;
517 BFD_ASSERT (irel->r_addend == 0);
518 }
519
520 /* Can't do anything else with dynamic symbols. */
521 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
522 continue;
523
524 else
525 {
526 /* We can't do anything with undefined symbols. */
527 if (h->root.type == bfd_link_hash_undefined
528 || h->root.type == bfd_link_hash_undefweak)
529 continue;
530
531 tsec = h->root.u.def.section;
532 toff = h->root.u.def.value;
533 }
534
535 symtype = h->type;
536 }
537
538 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
539 {
540 /* At this stage in linking, no SEC_MERGE symbol has been
541 adjusted, so all references to such symbols need to be
542 passed through _bfd_merged_section_offset. (Later, in
543 relocate_section, all SEC_MERGE symbols *except* for
544 section symbols have been adjusted.)
545
546 gas may reduce relocations against symbols in SEC_MERGE
547 sections to a relocation against the section symbol when
548 the original addend was zero. When the reloc is against
549 a section symbol we should include the addend in the
550 offset passed to _bfd_merged_section_offset, since the
551 location of interest is the original symbol. On the
552 other hand, an access to "sym+addend" where "sym" is not
553 a section symbol should not include the addend; Such an
554 access is presumed to be an offset from "sym"; The
555 location of interest is just "sym". */
556 if (symtype == STT_SECTION)
557 toff += irel->r_addend;
558
559 toff = _bfd_merged_section_offset (abfd, &tsec,
560 elf_section_data (tsec)->sec_info,
561 toff);
562
563 if (symtype != STT_SECTION)
564 toff += irel->r_addend;
565 }
566 else
567 toff += irel->r_addend;
568
569 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
570
571 roff = irel->r_offset;
572
573 if (is_branch)
574 {
575 bfd_signed_vma offset;
576
577 reladdr = (sec->output_section->vma
578 + sec->output_offset
579 + roff) & (bfd_vma) -4;
580
581 /* The .plt section is aligned at 32byte and the .text section
582 is aligned at 64byte. The .text section is right after the
583 .plt section. After the first relaxation pass, linker may
584 increase the gap between the .plt and .text sections up
585 to 32byte. We assume linker will always insert 32byte
586 between the .plt and .text sections after the first
587 relaxation pass. */
588 if (tsec == ia64_info->root.splt)
589 offset = -0x1000000 + 32;
590 else
591 offset = -0x1000000;
592
593 /* If the branch is in range, no need to do anything. */
594 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
595 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
596 {
597 /* If the 60-bit branch is in 21-bit range, optimize it. */
598 if (r_type == R_IA64_PCREL60B)
599 {
600 ia64_elf_relax_brl (contents, roff);
601
602 irel->r_info
603 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
604 R_IA64_PCREL21B);
605
606 /* If the original relocation offset points to slot
607 1, change it to slot 2. */
608 if ((irel->r_offset & 3) == 1)
609 irel->r_offset += 1;
610
611 changed_contents = TRUE;
612 changed_relocs = TRUE;
613 }
614
615 continue;
616 }
617 else if (r_type == R_IA64_PCREL60B)
618 continue;
619 else if (ia64_elf_relax_br (contents, roff))
620 {
621 irel->r_info
622 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
623 R_IA64_PCREL60B);
624
625 /* Make the relocation offset point to slot 1. */
626 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
627
628 changed_contents = TRUE;
629 changed_relocs = TRUE;
630 continue;
631 }
632
633 /* We can't put a trampoline in a .init/.fini section. Issue
634 an error. */
635 if (strcmp (sec->output_section->name, ".init") == 0
636 || strcmp (sec->output_section->name, ".fini") == 0)
637 {
638 _bfd_error_handler
639 /* xgettext:c-format */
640 (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';"
641 " please use brl or indirect branch"),
642 sec->owner, (uint64_t) roff, sec);
643 bfd_set_error (bfd_error_bad_value);
644 goto error_return;
645 }
646
647 /* If the branch and target are in the same section, you've
648 got one honking big section and we can't help you unless
649 you are branching backwards. You'll get an error message
650 later. */
651 if (tsec == sec && toff > roff)
652 continue;
653
654 /* Look for an existing fixup to this address. */
655 for (f = fixups; f ; f = f->next)
656 if (f->tsec == tsec && f->toff == toff)
657 break;
658
659 if (f == NULL)
660 {
661 /* Two alternatives: If it's a branch to a PLT entry, we can
662 make a copy of the FULL_PLT entry. Otherwise, we'll have
663 to use a `brl' insn to get where we're going. */
664
665 size_t size;
666
667 if (tsec == ia64_info->root.splt)
668 size = sizeof (plt_full_entry);
669 else
670 size = oor_branch_size;
671
672 /* Resize the current section to make room for the new branch. */
673 trampoff = (sec->size + 15) & (bfd_vma) -16;
674
675 /* If trampoline is out of range, there is nothing we
676 can do. */
677 offset = trampoff - (roff & (bfd_vma) -4);
678 if (offset < -0x1000000 || offset > 0x0FFFFF0)
679 continue;
680
681 amt = trampoff + size;
682 contents = (bfd_byte *) bfd_realloc (contents, amt);
683 if (contents == NULL)
684 goto error_return;
685 sec->size = amt;
686
687 if (tsec == ia64_info->root.splt)
688 {
689 memcpy (contents + trampoff, plt_full_entry, size);
690
691 /* Hijack the old relocation for use as the PLTOFF reloc. */
692 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
693 R_IA64_PLTOFF22);
694 irel->r_offset = trampoff;
695 }
696 else
697 {
698 if (size == sizeof (oor_ip))
699 {
700 memcpy (contents + trampoff, oor_ip, size);
701 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
702 R_IA64_PCREL64I);
703 irel->r_addend -= 16;
704 irel->r_offset = trampoff + 2;
705 }
706 else
707 {
708 memcpy (contents + trampoff, oor_brl, size);
709 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
710 R_IA64_PCREL60B);
711 irel->r_offset = trampoff + 2;
712 }
713
714 }
715
716 /* Record the fixup so we don't do it again this section. */
717 f = (struct one_fixup *)
718 bfd_malloc ((bfd_size_type) sizeof (*f));
719 f->next = fixups;
720 f->tsec = tsec;
721 f->toff = toff;
722 f->trampoff = trampoff;
723 fixups = f;
724 }
725 else
726 {
727 /* If trampoline is out of range, there is nothing we
728 can do. */
729 offset = f->trampoff - (roff & (bfd_vma) -4);
730 if (offset < -0x1000000 || offset > 0x0FFFFF0)
731 continue;
732
733 /* Nop out the reloc, since we're finalizing things here. */
734 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
735 }
736
737 /* Fix up the existing branch to hit the trampoline. */
738 if (ia64_elf_install_value (contents + roff, offset, r_type)
739 != bfd_reloc_ok)
740 goto error_return;
741
742 changed_contents = TRUE;
743 changed_relocs = TRUE;
744 }
745 else
746 {
747 /* Fetch the gp. */
748 if (gp == 0)
749 {
750 bfd *obfd = sec->output_section->owner;
751 gp = _bfd_get_gp_value (obfd);
752 if (gp == 0)
753 {
754 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
755 goto error_return;
756 gp = _bfd_get_gp_value (obfd);
757 }
758 }
759
760 /* If the data is out of range, do nothing. */
761 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
762 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
763 continue;
764
765 if (r_type == R_IA64_GPREL22)
766 elfNN_ia64_update_short_info (tsec->output_section,
767 tsec->output_offset + toff,
768 ia64_info);
769 else if (r_type == R_IA64_LTOFF22X)
770 {
771 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
772 R_IA64_GPREL22);
773 changed_relocs = TRUE;
774 if (dyn_i->want_gotx)
775 {
776 dyn_i->want_gotx = 0;
777 changed_got |= !dyn_i->want_got;
778 }
779
780 elfNN_ia64_update_short_info (tsec->output_section,
781 tsec->output_offset + toff,
782 ia64_info);
783 }
784 else
785 {
786 ia64_elf_relax_ldxmov (contents, roff);
787 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
788 changed_contents = TRUE;
789 changed_relocs = TRUE;
790 }
791 }
792 }
793
794 /* ??? If we created fixups, this may push the code segment large
795 enough that the data segment moves, which will change the GP.
796 Reset the GP so that we re-calculate next round. We need to
797 do this at the _beginning_ of the next round; now will not do. */
798
799 /* Clean up and go home. */
800 while (fixups)
801 {
802 struct one_fixup *f = fixups;
803 fixups = fixups->next;
804 free (f);
805 }
806
807 if (isymbuf != NULL
808 && symtab_hdr->contents != (unsigned char *) isymbuf)
809 {
810 if (! link_info->keep_memory)
811 free (isymbuf);
812 else
813 {
814 /* Cache the symbols for elf_link_input_bfd. */
815 symtab_hdr->contents = (unsigned char *) isymbuf;
816 }
817 }
818
819 if (contents != NULL
820 && elf_section_data (sec)->this_hdr.contents != contents)
821 {
822 if (!changed_contents && !link_info->keep_memory)
823 free (contents);
824 else
825 {
826 /* Cache the section contents for elf_link_input_bfd. */
827 elf_section_data (sec)->this_hdr.contents = contents;
828 }
829 }
830
831 if (elf_section_data (sec)->relocs != internal_relocs)
832 {
833 if (!changed_relocs)
834 free (internal_relocs);
835 else
836 elf_section_data (sec)->relocs = internal_relocs;
837 }
838
839 if (changed_got)
840 {
841 struct elfNN_ia64_allocate_data data;
842 data.info = link_info;
843 data.ofs = 0;
844 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
845
846 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
847 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
848 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
849 ia64_info->root.sgot->size = data.ofs;
850
851 if (ia64_info->root.dynamic_sections_created
852 && ia64_info->root.srelgot != NULL)
853 {
854 /* Resize .rela.got. */
855 ia64_info->root.srelgot->size = 0;
856 if (bfd_link_pic (link_info)
857 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
858 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
859 data.only_got = TRUE;
860 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
861 &data);
862 }
863 }
864
865 if (link_info->relax_pass == 0)
866 {
867 /* Pass 0 is only needed to relax br. */
868 sec->skip_relax_pass_0 = skip_relax_pass_0;
869 sec->skip_relax_pass_1 = skip_relax_pass_1;
870 }
871
872 *again = changed_contents || changed_relocs;
873 return TRUE;
874
875 error_return:
876 if ((unsigned char *) isymbuf != symtab_hdr->contents)
877 free (isymbuf);
878 if (elf_section_data (sec)->this_hdr.contents != contents)
879 free (contents);
880 if (elf_section_data (sec)->relocs != internal_relocs)
881 free (internal_relocs);
882 return FALSE;
883 }
884 #undef skip_relax_pass_0
885 #undef skip_relax_pass_1
886 \f
887 /* Return TRUE if NAME is an unwind table section name. */
888
889 static inline bfd_boolean
890 is_unwind_section_name (bfd *abfd, const char *name)
891 {
892 if (elfNN_ia64_hpux_vec (abfd->xvec)
893 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
894 return FALSE;
895
896 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
897 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
898 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
899 }
900
901 /* Handle an IA-64 specific section when reading an object file. This
902 is called when bfd_section_from_shdr finds a section with an unknown
903 type. */
904
905 static bfd_boolean
906 elfNN_ia64_section_from_shdr (bfd *abfd,
907 Elf_Internal_Shdr *hdr,
908 const char *name,
909 int shindex)
910 {
911 /* There ought to be a place to keep ELF backend specific flags, but
912 at the moment there isn't one. We just keep track of the
913 sections by their name, instead. Fortunately, the ABI gives
914 suggested names for all the MIPS specific sections, so we will
915 probably get away with this. */
916 switch (hdr->sh_type)
917 {
918 case SHT_IA_64_UNWIND:
919 case SHT_IA_64_HP_OPT_ANOT:
920 break;
921
922 case SHT_IA_64_EXT:
923 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
924 return FALSE;
925 break;
926
927 default:
928 return FALSE;
929 }
930
931 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
932 return FALSE;
933
934 return TRUE;
935 }
936
937 /* Convert IA-64 specific section flags to bfd internal section flags. */
938
939 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
940 flag. */
941
942 static bfd_boolean
943 elfNN_ia64_section_flags (const Elf_Internal_Shdr *hdr)
944 {
945 if (hdr->sh_flags & SHF_IA_64_SHORT)
946 hdr->bfd_section->flags |= SEC_SMALL_DATA;
947
948 return TRUE;
949 }
950
951 /* Set the correct type for an IA-64 ELF section. We do this by the
952 section name, which is a hack, but ought to work. */
953
954 static bfd_boolean
955 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
956 asection *sec)
957 {
958 const char *name;
959
960 name = bfd_section_name (sec);
961
962 if (is_unwind_section_name (abfd, name))
963 {
964 /* We don't have the sections numbered at this point, so sh_info
965 is set later, in elfNN_ia64_final_write_processing. */
966 hdr->sh_type = SHT_IA_64_UNWIND;
967 hdr->sh_flags |= SHF_LINK_ORDER;
968 }
969 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
970 hdr->sh_type = SHT_IA_64_EXT;
971 else if (strcmp (name, ".HP.opt_annot") == 0)
972 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
973 else if (strcmp (name, ".reloc") == 0)
974 /* This is an ugly, but unfortunately necessary hack that is
975 needed when producing EFI binaries on IA-64. It tells
976 elf.c:elf_fake_sections() not to consider ".reloc" as a section
977 containing ELF relocation info. We need this hack in order to
978 be able to generate ELF binaries that can be translated into
979 EFI applications (which are essentially COFF objects). Those
980 files contain a COFF ".reloc" section inside an ELFNN object,
981 which would normally cause BFD to segfault because it would
982 attempt to interpret this section as containing relocation
983 entries for section "oc". With this hack enabled, ".reloc"
984 will be treated as a normal data section, which will avoid the
985 segfault. However, you won't be able to create an ELFNN binary
986 with a section named "oc" that needs relocations, but that's
987 the kind of ugly side-effects you get when detecting section
988 types based on their names... In practice, this limitation is
989 unlikely to bite. */
990 hdr->sh_type = SHT_PROGBITS;
991
992 if (sec->flags & SEC_SMALL_DATA)
993 hdr->sh_flags |= SHF_IA_64_SHORT;
994
995 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
996
997 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
998 hdr->sh_flags |= SHF_IA_64_HP_TLS;
999
1000 return TRUE;
1001 }
1002
1003 /* The final processing done just before writing out an IA-64 ELF
1004 object file. */
1005
1006 static bfd_boolean
1007 elfNN_ia64_final_write_processing (bfd *abfd)
1008 {
1009 Elf_Internal_Shdr *hdr;
1010 asection *s;
1011
1012 for (s = abfd->sections; s; s = s->next)
1013 {
1014 hdr = &elf_section_data (s)->this_hdr;
1015 switch (hdr->sh_type)
1016 {
1017 case SHT_IA_64_UNWIND:
1018 /* The IA-64 processor-specific ABI requires setting sh_link
1019 to the unwind section, whereas HP-UX requires sh_info to
1020 do so. For maximum compatibility, we'll set both for
1021 now... */
1022 hdr->sh_info = hdr->sh_link;
1023 break;
1024 }
1025 }
1026
1027 if (! elf_flags_init (abfd))
1028 {
1029 unsigned long flags = 0;
1030
1031 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1032 flags |= EF_IA_64_BE;
1033 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1034 flags |= EF_IA_64_ABI64;
1035
1036 elf_elfheader(abfd)->e_flags = flags;
1037 elf_flags_init (abfd) = TRUE;
1038 }
1039 return _bfd_elf_final_write_processing (abfd);
1040 }
1041
1042 /* Hook called by the linker routine which adds symbols from an object
1043 file. We use it to put .comm items in .sbss, and not .bss. */
1044
1045 static bfd_boolean
1046 elfNN_ia64_add_symbol_hook (bfd *abfd,
1047 struct bfd_link_info *info,
1048 Elf_Internal_Sym *sym,
1049 const char **namep ATTRIBUTE_UNUSED,
1050 flagword *flagsp ATTRIBUTE_UNUSED,
1051 asection **secp,
1052 bfd_vma *valp)
1053 {
1054 if (sym->st_shndx == SHN_COMMON
1055 && !bfd_link_relocatable (info)
1056 && sym->st_size <= elf_gp_size (abfd))
1057 {
1058 /* Common symbols less than or equal to -G nn bytes are
1059 automatically put into .sbss. */
1060
1061 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1062
1063 if (scomm == NULL)
1064 {
1065 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1066 (SEC_ALLOC
1067 | SEC_IS_COMMON
1068 | SEC_LINKER_CREATED));
1069 if (scomm == NULL)
1070 return FALSE;
1071 }
1072
1073 *secp = scomm;
1074 *valp = sym->st_size;
1075 }
1076
1077 return TRUE;
1078 }
1079
1080 /* Return the number of additional phdrs we will need. */
1081
1082 static int
1083 elfNN_ia64_additional_program_headers (bfd *abfd,
1084 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1085 {
1086 asection *s;
1087 int ret = 0;
1088
1089 /* See if we need a PT_IA_64_ARCHEXT segment. */
1090 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1091 if (s && (s->flags & SEC_LOAD))
1092 ++ret;
1093
1094 /* Count how many PT_IA_64_UNWIND segments we need. */
1095 for (s = abfd->sections; s; s = s->next)
1096 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1097 ++ret;
1098
1099 return ret;
1100 }
1101
1102 static bfd_boolean
1103 elfNN_ia64_modify_segment_map (bfd *abfd,
1104 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1105 {
1106 struct elf_segment_map *m, **pm;
1107 Elf_Internal_Shdr *hdr;
1108 asection *s;
1109
1110 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1111 all PT_LOAD segments. */
1112 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1113 if (s && (s->flags & SEC_LOAD))
1114 {
1115 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1116 if (m->p_type == PT_IA_64_ARCHEXT)
1117 break;
1118 if (m == NULL)
1119 {
1120 m = ((struct elf_segment_map *)
1121 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1122 if (m == NULL)
1123 return FALSE;
1124
1125 m->p_type = PT_IA_64_ARCHEXT;
1126 m->count = 1;
1127 m->sections[0] = s;
1128
1129 /* We want to put it after the PHDR and INTERP segments. */
1130 pm = &elf_seg_map (abfd);
1131 while (*pm != NULL
1132 && ((*pm)->p_type == PT_PHDR
1133 || (*pm)->p_type == PT_INTERP))
1134 pm = &(*pm)->next;
1135
1136 m->next = *pm;
1137 *pm = m;
1138 }
1139 }
1140
1141 /* Install PT_IA_64_UNWIND segments, if needed. */
1142 for (s = abfd->sections; s; s = s->next)
1143 {
1144 hdr = &elf_section_data (s)->this_hdr;
1145 if (hdr->sh_type != SHT_IA_64_UNWIND)
1146 continue;
1147
1148 if (s && (s->flags & SEC_LOAD))
1149 {
1150 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1151 if (m->p_type == PT_IA_64_UNWIND)
1152 {
1153 int i;
1154
1155 /* Look through all sections in the unwind segment
1156 for a match since there may be multiple sections
1157 to a segment. */
1158 for (i = m->count - 1; i >= 0; --i)
1159 if (m->sections[i] == s)
1160 break;
1161
1162 if (i >= 0)
1163 break;
1164 }
1165
1166 if (m == NULL)
1167 {
1168 m = ((struct elf_segment_map *)
1169 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1170 if (m == NULL)
1171 return FALSE;
1172
1173 m->p_type = PT_IA_64_UNWIND;
1174 m->count = 1;
1175 m->sections[0] = s;
1176 m->next = NULL;
1177
1178 /* We want to put it last. */
1179 pm = &elf_seg_map (abfd);
1180 while (*pm != NULL)
1181 pm = &(*pm)->next;
1182 *pm = m;
1183 }
1184 }
1185 }
1186
1187 return TRUE;
1188 }
1189
1190 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1191 the input sections for each output section in the segment and testing
1192 for SHF_IA_64_NORECOV on each. */
1193
1194 static bfd_boolean
1195 elfNN_ia64_modify_headers (bfd *abfd, struct bfd_link_info *info)
1196 {
1197 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1198 struct elf_segment_map *m;
1199 Elf_Internal_Phdr *p;
1200
1201 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1202 if (m->p_type == PT_LOAD)
1203 {
1204 int i;
1205 for (i = m->count - 1; i >= 0; --i)
1206 {
1207 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1208
1209 while (order != NULL)
1210 {
1211 if (order->type == bfd_indirect_link_order)
1212 {
1213 asection *is = order->u.indirect.section;
1214 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1215 if (flags & SHF_IA_64_NORECOV)
1216 {
1217 p->p_flags |= PF_IA_64_NORECOV;
1218 goto found;
1219 }
1220 }
1221 order = order->next;
1222 }
1223 }
1224 found:;
1225 }
1226
1227 return _bfd_elf_modify_headers (abfd, info);
1228 }
1229
1230 /* According to the Tahoe assembler spec, all labels starting with a
1231 '.' are local. */
1232
1233 static bfd_boolean
1234 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1235 const char *name)
1236 {
1237 return name[0] == '.';
1238 }
1239
1240 /* Should we do dynamic things to this symbol? */
1241
1242 static bfd_boolean
1243 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1244 struct bfd_link_info *info, int r_type)
1245 {
1246 bfd_boolean ignore_protected
1247 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1248 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1249
1250 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1251 }
1252 \f
1253 static struct bfd_hash_entry*
1254 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1255 struct bfd_hash_table *table,
1256 const char *string)
1257 {
1258 struct elfNN_ia64_link_hash_entry *ret;
1259 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1260
1261 /* Allocate the structure if it has not already been allocated by a
1262 subclass. */
1263 if (!ret)
1264 ret = bfd_hash_allocate (table, sizeof (*ret));
1265
1266 if (!ret)
1267 return 0;
1268
1269 /* Call the allocation method of the superclass. */
1270 ret = ((struct elfNN_ia64_link_hash_entry *)
1271 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1272 table, string));
1273
1274 ret->info = NULL;
1275 ret->count = 0;
1276 ret->sorted_count = 0;
1277 ret->size = 0;
1278 return (struct bfd_hash_entry *) ret;
1279 }
1280
1281 static void
1282 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1283 struct elf_link_hash_entry *xdir,
1284 struct elf_link_hash_entry *xind)
1285 {
1286 struct elfNN_ia64_link_hash_entry *dir, *ind;
1287
1288 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1289 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1290
1291 /* Copy down any references that we may have already seen to the
1292 symbol which just became indirect. */
1293
1294 if (dir->root.versioned != versioned_hidden)
1295 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1296 dir->root.ref_regular |= ind->root.ref_regular;
1297 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1298 dir->root.needs_plt |= ind->root.needs_plt;
1299
1300 if (ind->root.root.type != bfd_link_hash_indirect)
1301 return;
1302
1303 /* Copy over the got and plt data. This would have been done
1304 by check_relocs. */
1305
1306 if (ind->info != NULL)
1307 {
1308 struct elfNN_ia64_dyn_sym_info *dyn_i;
1309 unsigned int count;
1310
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 free (entry->info);
1400 entry->info = NULL;
1401 entry->count = 0;
1402 entry->sorted_count = 0;
1403 entry->size = 0;
1404
1405 return TRUE;
1406 }
1407
1408 /* Free the local elfNN_ia64_dyn_sym_info array. */
1409
1410 static bfd_boolean
1411 elfNN_ia64_local_dyn_info_free (void **slot,
1412 void * unused ATTRIBUTE_UNUSED)
1413 {
1414 struct elfNN_ia64_local_hash_entry *entry
1415 = (struct elfNN_ia64_local_hash_entry *) *slot;
1416
1417 free (entry->info);
1418 entry->info = NULL;
1419 entry->count = 0;
1420 entry->sorted_count = 0;
1421 entry->size = 0;
1422
1423 return TRUE;
1424 }
1425
1426 /* Destroy IA-64 linker hash table. */
1427
1428 static void
1429 elfNN_ia64_link_hash_table_free (bfd *obfd)
1430 {
1431 struct elfNN_ia64_link_hash_table *ia64_info
1432 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
1433 if (ia64_info->loc_hash_table)
1434 {
1435 htab_traverse (ia64_info->loc_hash_table,
1436 elfNN_ia64_local_dyn_info_free, NULL);
1437 htab_delete (ia64_info->loc_hash_table);
1438 }
1439 if (ia64_info->loc_hash_memory)
1440 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1441 elf_link_hash_traverse (&ia64_info->root,
1442 elfNN_ia64_global_dyn_info_free, NULL);
1443 _bfd_elf_link_hash_table_free (obfd);
1444 }
1445
1446 /* Create the derived linker hash table. The IA-64 ELF port uses this
1447 derived hash table to keep information specific to the IA-64 ElF
1448 linker (without using static variables). */
1449
1450 static struct bfd_link_hash_table *
1451 elfNN_ia64_hash_table_create (bfd *abfd)
1452 {
1453 struct elfNN_ia64_link_hash_table *ret;
1454
1455 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1456 if (!ret)
1457 return NULL;
1458
1459 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1460 elfNN_ia64_new_elf_hash_entry,
1461 sizeof (struct elfNN_ia64_link_hash_entry),
1462 IA64_ELF_DATA))
1463 {
1464 free (ret);
1465 return NULL;
1466 }
1467
1468 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1469 elfNN_ia64_local_htab_eq, NULL);
1470 ret->loc_hash_memory = objalloc_create ();
1471 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1472 {
1473 elfNN_ia64_link_hash_table_free (abfd);
1474 return NULL;
1475 }
1476 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
1477
1478 return &ret->root.root;
1479 }
1480
1481 /* Traverse both local and global hash tables. */
1482
1483 struct elfNN_ia64_dyn_sym_traverse_data
1484 {
1485 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1486 void * data;
1487 };
1488
1489 static bfd_boolean
1490 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1491 void * xdata)
1492 {
1493 struct elfNN_ia64_link_hash_entry *entry
1494 = (struct elfNN_ia64_link_hash_entry *) xentry;
1495 struct elfNN_ia64_dyn_sym_traverse_data *data
1496 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1497 struct elfNN_ia64_dyn_sym_info *dyn_i;
1498 unsigned int count;
1499
1500 for (count = entry->count, dyn_i = entry->info;
1501 count != 0;
1502 count--, dyn_i++)
1503 if (! (*data->func) (dyn_i, data->data))
1504 return FALSE;
1505 return TRUE;
1506 }
1507
1508 static bfd_boolean
1509 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1510 {
1511 struct elfNN_ia64_local_hash_entry *entry
1512 = (struct elfNN_ia64_local_hash_entry *) *slot;
1513 struct elfNN_ia64_dyn_sym_traverse_data *data
1514 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1515 struct elfNN_ia64_dyn_sym_info *dyn_i;
1516 unsigned int count;
1517
1518 for (count = entry->count, dyn_i = entry->info;
1519 count != 0;
1520 count--, dyn_i++)
1521 if (! (*data->func) (dyn_i, data->data))
1522 return FALSE;
1523 return TRUE;
1524 }
1525
1526 static void
1527 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1528 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1529 void * data)
1530 {
1531 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1532
1533 xdata.func = func;
1534 xdata.data = data;
1535
1536 elf_link_hash_traverse (&ia64_info->root,
1537 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1538 htab_traverse (ia64_info->loc_hash_table,
1539 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1540 }
1541 \f
1542 static bfd_boolean
1543 elfNN_ia64_create_dynamic_sections (bfd *abfd,
1544 struct bfd_link_info *info)
1545 {
1546 struct elfNN_ia64_link_hash_table *ia64_info;
1547 asection *s;
1548
1549 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1550 return FALSE;
1551
1552 ia64_info = elfNN_ia64_hash_table (info);
1553 if (ia64_info == NULL)
1554 return FALSE;
1555
1556 {
1557 flagword flags = bfd_section_flags (ia64_info->root.sgot);
1558 bfd_set_section_flags (ia64_info->root.sgot, SEC_SMALL_DATA | flags);
1559 /* The .got section is always aligned at 8 bytes. */
1560 if (!bfd_set_section_alignment (ia64_info->root.sgot, 3))
1561 return FALSE;
1562 }
1563
1564 if (!get_pltoff (abfd, info, ia64_info))
1565 return FALSE;
1566
1567 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1568 (SEC_ALLOC | SEC_LOAD
1569 | SEC_HAS_CONTENTS
1570 | SEC_IN_MEMORY
1571 | SEC_LINKER_CREATED
1572 | SEC_READONLY));
1573 if (s == NULL
1574 || !bfd_set_section_alignment (s, LOG_SECTION_ALIGN))
1575 return FALSE;
1576 ia64_info->rel_pltoff_sec = s;
1577
1578 return TRUE;
1579 }
1580
1581 /* Find and/or create a hash entry for local symbol. */
1582 static struct elfNN_ia64_local_hash_entry *
1583 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1584 bfd *abfd, const Elf_Internal_Rela *rel,
1585 bfd_boolean create)
1586 {
1587 struct elfNN_ia64_local_hash_entry e, *ret;
1588 asection *sec = abfd->sections;
1589 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1590 ELFNN_R_SYM (rel->r_info));
1591 void **slot;
1592
1593 e.id = sec->id;
1594 e.r_sym = ELFNN_R_SYM (rel->r_info);
1595 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1596 create ? INSERT : NO_INSERT);
1597
1598 if (!slot)
1599 return NULL;
1600
1601 if (*slot)
1602 return (struct elfNN_ia64_local_hash_entry *) *slot;
1603
1604 ret = (struct elfNN_ia64_local_hash_entry *)
1605 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1606 sizeof (struct elfNN_ia64_local_hash_entry));
1607 if (ret)
1608 {
1609 memset (ret, 0, sizeof (*ret));
1610 ret->id = sec->id;
1611 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1612 *slot = ret;
1613 }
1614 return ret;
1615 }
1616
1617 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1618
1619 static int
1620 addend_compare (const void *xp, const void *yp)
1621 {
1622 const struct elfNN_ia64_dyn_sym_info *x
1623 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1624 const struct elfNN_ia64_dyn_sym_info *y
1625 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1626
1627 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1628 }
1629
1630 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1631
1632 static unsigned int
1633 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1634 unsigned int count)
1635 {
1636 bfd_vma curr, prev, got_offset;
1637 unsigned int i, kept, dupes, diff, dest, src, len;
1638
1639 qsort (info, count, sizeof (*info), addend_compare);
1640
1641 /* Find the first duplicate. */
1642 prev = info [0].addend;
1643 got_offset = info [0].got_offset;
1644 for (i = 1; i < count; i++)
1645 {
1646 curr = info [i].addend;
1647 if (curr == prev)
1648 {
1649 /* For duplicates, make sure that GOT_OFFSET is valid. */
1650 if (got_offset == (bfd_vma) -1)
1651 got_offset = info [i].got_offset;
1652 break;
1653 }
1654 got_offset = info [i].got_offset;
1655 prev = curr;
1656 }
1657
1658 /* We may move a block of elements to here. */
1659 dest = i++;
1660
1661 /* Remove duplicates. */
1662 if (i < count)
1663 {
1664 while (i < count)
1665 {
1666 /* For duplicates, make sure that the kept one has a valid
1667 got_offset. */
1668 kept = dest - 1;
1669 if (got_offset != (bfd_vma) -1)
1670 info [kept].got_offset = got_offset;
1671
1672 curr = info [i].addend;
1673 got_offset = info [i].got_offset;
1674
1675 /* Move a block of elements whose first one is different from
1676 the previous. */
1677 if (curr == prev)
1678 {
1679 for (src = i + 1; src < count; src++)
1680 {
1681 if (info [src].addend != curr)
1682 break;
1683 /* For duplicates, make sure that GOT_OFFSET is
1684 valid. */
1685 if (got_offset == (bfd_vma) -1)
1686 got_offset = info [src].got_offset;
1687 }
1688
1689 /* Make sure that the kept one has a valid got_offset. */
1690 if (got_offset != (bfd_vma) -1)
1691 info [kept].got_offset = got_offset;
1692 }
1693 else
1694 src = i;
1695
1696 if (src >= count)
1697 break;
1698
1699 /* Find the next duplicate. SRC will be kept. */
1700 prev = info [src].addend;
1701 got_offset = info [src].got_offset;
1702 for (dupes = src + 1; dupes < count; dupes ++)
1703 {
1704 curr = info [dupes].addend;
1705 if (curr == prev)
1706 {
1707 /* Make sure that got_offset is valid. */
1708 if (got_offset == (bfd_vma) -1)
1709 got_offset = info [dupes].got_offset;
1710
1711 /* For duplicates, make sure that the kept one has
1712 a valid got_offset. */
1713 if (got_offset != (bfd_vma) -1)
1714 info [dupes - 1].got_offset = got_offset;
1715 break;
1716 }
1717 got_offset = info [dupes].got_offset;
1718 prev = curr;
1719 }
1720
1721 /* How much to move. */
1722 len = dupes - src;
1723 i = dupes + 1;
1724
1725 if (len == 1 && dupes < count)
1726 {
1727 /* If we only move 1 element, we combine it with the next
1728 one. There must be at least a duplicate. Find the
1729 next different one. */
1730 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1731 {
1732 if (info [diff].addend != curr)
1733 break;
1734 /* Make sure that got_offset is valid. */
1735 if (got_offset == (bfd_vma) -1)
1736 got_offset = info [diff].got_offset;
1737 }
1738
1739 /* Makre sure that the last duplicated one has an valid
1740 offset. */
1741 BFD_ASSERT (curr == prev);
1742 if (got_offset != (bfd_vma) -1)
1743 info [diff - 1].got_offset = got_offset;
1744
1745 if (diff < count)
1746 {
1747 /* Find the next duplicate. Track the current valid
1748 offset. */
1749 prev = info [diff].addend;
1750 got_offset = info [diff].got_offset;
1751 for (dupes = diff + 1; dupes < count; dupes ++)
1752 {
1753 curr = info [dupes].addend;
1754 if (curr == prev)
1755 {
1756 /* For duplicates, make sure that GOT_OFFSET
1757 is valid. */
1758 if (got_offset == (bfd_vma) -1)
1759 got_offset = info [dupes].got_offset;
1760 break;
1761 }
1762 got_offset = info [dupes].got_offset;
1763 prev = curr;
1764 diff++;
1765 }
1766
1767 len = diff - src + 1;
1768 i = diff + 1;
1769 }
1770 }
1771
1772 memmove (&info [dest], &info [src], len * sizeof (*info));
1773
1774 dest += len;
1775 }
1776
1777 count = dest;
1778 }
1779 else
1780 {
1781 /* When we get here, either there is no duplicate at all or
1782 the only duplicate is the last element. */
1783 if (dest < count)
1784 {
1785 /* If the last element is a duplicate, make sure that the
1786 kept one has a valid got_offset. We also update count. */
1787 if (got_offset != (bfd_vma) -1)
1788 info [dest - 1].got_offset = got_offset;
1789 count = dest;
1790 }
1791 }
1792
1793 return count;
1794 }
1795
1796 /* Find and/or create a descriptor for dynamic symbol info. This will
1797 vary based on global or local symbol, and the addend to the reloc.
1798
1799 We don't sort when inserting. Also, we sort and eliminate
1800 duplicates if there is an unsorted section. Typically, this will
1801 only happen once, because we do all insertions before lookups. We
1802 then use bsearch to do a lookup. This also allows lookups to be
1803 fast. So we have fast insertion (O(log N) due to duplicate check),
1804 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1805 Previously, all lookups were O(N) because of the use of the linked
1806 list and also all insertions were O(N) because of the check for
1807 duplicates. There are some complications here because the array
1808 size grows occasionally, which may add an O(N) factor, but this
1809 should be rare. Also, we free the excess array allocation, which
1810 requires a copy which is O(N), but this only happens once. */
1811
1812 static struct elfNN_ia64_dyn_sym_info *
1813 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1814 struct elf_link_hash_entry *h, bfd *abfd,
1815 const Elf_Internal_Rela *rel, bfd_boolean create)
1816 {
1817 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1818 unsigned int *count_p, *sorted_count_p, *size_p;
1819 unsigned int count, sorted_count, size;
1820 bfd_vma addend = rel ? rel->r_addend : 0;
1821 bfd_size_type amt;
1822
1823 if (h)
1824 {
1825 struct elfNN_ia64_link_hash_entry *global_h;
1826
1827 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1828 info_p = &global_h->info;
1829 count_p = &global_h->count;
1830 sorted_count_p = &global_h->sorted_count;
1831 size_p = &global_h->size;
1832 }
1833 else
1834 {
1835 struct elfNN_ia64_local_hash_entry *loc_h;
1836
1837 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1838 if (!loc_h)
1839 {
1840 BFD_ASSERT (!create);
1841 return NULL;
1842 }
1843
1844 info_p = &loc_h->info;
1845 count_p = &loc_h->count;
1846 sorted_count_p = &loc_h->sorted_count;
1847 size_p = &loc_h->size;
1848 }
1849
1850 count = *count_p;
1851 sorted_count = *sorted_count_p;
1852 size = *size_p;
1853 info = *info_p;
1854 if (create)
1855 {
1856 /* When we create the array, we don't check for duplicates,
1857 except in the previously sorted section if one exists, and
1858 against the last inserted entry. This allows insertions to
1859 be fast. */
1860 if (info)
1861 {
1862 if (sorted_count)
1863 {
1864 /* Try bsearch first on the sorted section. */
1865 key.addend = addend;
1866 dyn_i = bsearch (&key, info, sorted_count,
1867 sizeof (*info), addend_compare);
1868
1869 if (dyn_i)
1870 {
1871 return dyn_i;
1872 }
1873 }
1874
1875 /* Do a quick check for the last inserted entry. */
1876 dyn_i = info + count - 1;
1877 if (dyn_i->addend == addend)
1878 {
1879 return dyn_i;
1880 }
1881 }
1882
1883 if (size == 0)
1884 {
1885 /* It is the very first element. We create the array of size
1886 1. */
1887 size = 1;
1888 amt = size * sizeof (*info);
1889 info = bfd_malloc (amt);
1890 }
1891 else if (size <= count)
1892 {
1893 /* We double the array size every time when we reach the
1894 size limit. */
1895 size += size;
1896 amt = size * sizeof (*info);
1897 info = bfd_realloc (info, amt);
1898 }
1899 else
1900 goto has_space;
1901
1902 if (info == NULL)
1903 return NULL;
1904 *size_p = size;
1905 *info_p = info;
1906
1907 has_space:
1908 /* Append the new one to the array. */
1909 dyn_i = info + count;
1910 memset (dyn_i, 0, sizeof (*dyn_i));
1911 dyn_i->got_offset = (bfd_vma) -1;
1912 dyn_i->addend = addend;
1913
1914 /* We increment count only since the new ones are unsorted and
1915 may have duplicate. */
1916 (*count_p)++;
1917 }
1918 else
1919 {
1920 /* It is a lookup without insertion. Sort array if part of the
1921 array isn't sorted. */
1922 if (count != sorted_count)
1923 {
1924 count = sort_dyn_sym_info (info, count);
1925 *count_p = count;
1926 *sorted_count_p = count;
1927 }
1928
1929 /* Free unused memory. */
1930 if (size != count)
1931 {
1932 amt = count * sizeof (*info);
1933 info = bfd_malloc (amt);
1934 if (info != NULL)
1935 {
1936 memcpy (info, *info_p, amt);
1937 free (*info_p);
1938 *size_p = count;
1939 *info_p = info;
1940 }
1941 }
1942
1943 key.addend = addend;
1944 dyn_i = bsearch (&key, info, count,
1945 sizeof (*info), addend_compare);
1946 }
1947
1948 return dyn_i;
1949 }
1950
1951 static asection *
1952 get_got (bfd *abfd, struct bfd_link_info *info,
1953 struct elfNN_ia64_link_hash_table *ia64_info)
1954 {
1955 asection *got;
1956 bfd *dynobj;
1957
1958 got = ia64_info->root.sgot;
1959 if (!got)
1960 {
1961 flagword flags;
1962
1963 dynobj = ia64_info->root.dynobj;
1964 if (!dynobj)
1965 ia64_info->root.dynobj = dynobj = abfd;
1966 if (!_bfd_elf_create_got_section (dynobj, info))
1967 return NULL;
1968
1969 got = ia64_info->root.sgot;
1970
1971 /* The .got section is always aligned at 8 bytes. */
1972 if (!bfd_set_section_alignment (got, 3))
1973 return NULL;
1974
1975 flags = bfd_section_flags (got);
1976 if (!bfd_set_section_flags (got, SEC_SMALL_DATA | flags))
1977 return NULL;
1978 }
1979
1980 return got;
1981 }
1982
1983 /* Create function descriptor section (.opd). This section is called .opd
1984 because it contains "official procedure descriptors". The "official"
1985 refers to the fact that these descriptors are used when taking the address
1986 of a procedure, thus ensuring a unique address for each procedure. */
1987
1988 static asection *
1989 get_fptr (bfd *abfd, struct bfd_link_info *info,
1990 struct elfNN_ia64_link_hash_table *ia64_info)
1991 {
1992 asection *fptr;
1993 bfd *dynobj;
1994
1995 fptr = ia64_info->fptr_sec;
1996 if (!fptr)
1997 {
1998 dynobj = ia64_info->root.dynobj;
1999 if (!dynobj)
2000 ia64_info->root.dynobj = dynobj = abfd;
2001
2002 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
2003 (SEC_ALLOC
2004 | SEC_LOAD
2005 | SEC_HAS_CONTENTS
2006 | SEC_IN_MEMORY
2007 | (bfd_link_pie (info)
2008 ? 0 : SEC_READONLY)
2009 | SEC_LINKER_CREATED));
2010 if (!fptr
2011 || !bfd_set_section_alignment (fptr, 4))
2012 {
2013 BFD_ASSERT (0);
2014 return NULL;
2015 }
2016
2017 ia64_info->fptr_sec = fptr;
2018
2019 if (bfd_link_pie (info))
2020 {
2021 asection *fptr_rel;
2022 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2023 (SEC_ALLOC | SEC_LOAD
2024 | SEC_HAS_CONTENTS
2025 | SEC_IN_MEMORY
2026 | SEC_LINKER_CREATED
2027 | SEC_READONLY));
2028 if (fptr_rel == NULL
2029 || !bfd_set_section_alignment (fptr_rel, LOG_SECTION_ALIGN))
2030 {
2031 BFD_ASSERT (0);
2032 return NULL;
2033 }
2034
2035 ia64_info->rel_fptr_sec = fptr_rel;
2036 }
2037 }
2038
2039 return fptr;
2040 }
2041
2042 static asection *
2043 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2044 struct elfNN_ia64_link_hash_table *ia64_info)
2045 {
2046 asection *pltoff;
2047 bfd *dynobj;
2048
2049 pltoff = ia64_info->pltoff_sec;
2050 if (!pltoff)
2051 {
2052 dynobj = ia64_info->root.dynobj;
2053 if (!dynobj)
2054 ia64_info->root.dynobj = dynobj = abfd;
2055
2056 pltoff = bfd_make_section_anyway_with_flags (dynobj,
2057 ELF_STRING_ia64_pltoff,
2058 (SEC_ALLOC
2059 | SEC_LOAD
2060 | SEC_HAS_CONTENTS
2061 | SEC_IN_MEMORY
2062 | SEC_SMALL_DATA
2063 | SEC_LINKER_CREATED));
2064 if (!pltoff
2065 || !bfd_set_section_alignment (pltoff, 4))
2066 {
2067 BFD_ASSERT (0);
2068 return NULL;
2069 }
2070
2071 ia64_info->pltoff_sec = pltoff;
2072 }
2073
2074 return pltoff;
2075 }
2076
2077 static asection *
2078 get_reloc_section (bfd *abfd,
2079 struct elfNN_ia64_link_hash_table *ia64_info,
2080 asection *sec, bfd_boolean create)
2081 {
2082 const char *srel_name;
2083 asection *srel;
2084 bfd *dynobj;
2085
2086 srel_name = (bfd_elf_string_from_elf_section
2087 (abfd, elf_elfheader(abfd)->e_shstrndx,
2088 _bfd_elf_single_rel_hdr (sec)->sh_name));
2089 if (srel_name == NULL)
2090 return NULL;
2091
2092 dynobj = ia64_info->root.dynobj;
2093 if (!dynobj)
2094 ia64_info->root.dynobj = dynobj = abfd;
2095
2096 srel = bfd_get_linker_section (dynobj, srel_name);
2097 if (srel == NULL && create)
2098 {
2099 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2100 (SEC_ALLOC | SEC_LOAD
2101 | SEC_HAS_CONTENTS
2102 | SEC_IN_MEMORY
2103 | SEC_LINKER_CREATED
2104 | SEC_READONLY));
2105 if (srel == NULL
2106 || !bfd_set_section_alignment (srel, LOG_SECTION_ALIGN))
2107 return NULL;
2108 }
2109
2110 return srel;
2111 }
2112
2113 static bfd_boolean
2114 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2115 asection *srel, int type, bfd_boolean reltext)
2116 {
2117 struct elfNN_ia64_dyn_reloc_entry *rent;
2118
2119 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2120 if (rent->srel == srel && rent->type == type)
2121 break;
2122
2123 if (!rent)
2124 {
2125 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2126 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2127 if (!rent)
2128 return FALSE;
2129
2130 rent->next = dyn_i->reloc_entries;
2131 rent->srel = srel;
2132 rent->type = type;
2133 rent->count = 0;
2134 dyn_i->reloc_entries = rent;
2135 }
2136 rent->reltext = reltext;
2137 rent->count++;
2138
2139 return TRUE;
2140 }
2141
2142 static bfd_boolean
2143 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2144 asection *sec,
2145 const Elf_Internal_Rela *relocs)
2146 {
2147 struct elfNN_ia64_link_hash_table *ia64_info;
2148 const Elf_Internal_Rela *relend;
2149 Elf_Internal_Shdr *symtab_hdr;
2150 const Elf_Internal_Rela *rel;
2151 asection *got, *fptr, *srel, *pltoff;
2152 enum {
2153 NEED_GOT = 1,
2154 NEED_GOTX = 2,
2155 NEED_FPTR = 4,
2156 NEED_PLTOFF = 8,
2157 NEED_MIN_PLT = 16,
2158 NEED_FULL_PLT = 32,
2159 NEED_DYNREL = 64,
2160 NEED_LTOFF_FPTR = 128,
2161 NEED_TPREL = 256,
2162 NEED_DTPMOD = 512,
2163 NEED_DTPREL = 1024
2164 };
2165 int need_entry;
2166 struct elf_link_hash_entry *h;
2167 unsigned long r_symndx;
2168 bfd_boolean maybe_dynamic;
2169
2170 if (bfd_link_relocatable (info))
2171 return TRUE;
2172
2173 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2174 ia64_info = elfNN_ia64_hash_table (info);
2175 if (ia64_info == NULL)
2176 return FALSE;
2177
2178 got = fptr = srel = pltoff = NULL;
2179
2180 relend = relocs + sec->reloc_count;
2181
2182 /* We scan relocations first to create dynamic relocation arrays. We
2183 modified get_dyn_sym_info to allow fast insertion and support fast
2184 lookup in the next loop. */
2185 for (rel = relocs; rel < relend; ++rel)
2186 {
2187 r_symndx = ELFNN_R_SYM (rel->r_info);
2188 if (r_symndx >= symtab_hdr->sh_info)
2189 {
2190 long indx = r_symndx - symtab_hdr->sh_info;
2191 h = elf_sym_hashes (abfd)[indx];
2192 while (h->root.type == bfd_link_hash_indirect
2193 || h->root.type == bfd_link_hash_warning)
2194 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2195 }
2196 else
2197 h = NULL;
2198
2199 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2200 continue;
2201
2202 /* We can only get preliminary data on whether a symbol is
2203 locally or externally defined, as not all of the input files
2204 have yet been processed. Do something with what we know, as
2205 this may help reduce memory usage and processing time later. */
2206 maybe_dynamic = (h && ((!bfd_link_executable (info)
2207 && (!SYMBOLIC_BIND (info, h)
2208 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2209 || !h->def_regular
2210 || h->root.type == bfd_link_hash_defweak));
2211
2212 need_entry = 0;
2213 switch (ELFNN_R_TYPE (rel->r_info))
2214 {
2215 case R_IA64_TPREL64MSB:
2216 case R_IA64_TPREL64LSB:
2217 if (bfd_link_pic (info) || maybe_dynamic)
2218 need_entry = NEED_DYNREL;
2219 break;
2220
2221 case R_IA64_LTOFF_TPREL22:
2222 need_entry = NEED_TPREL;
2223 if (bfd_link_pic (info))
2224 info->flags |= DF_STATIC_TLS;
2225 break;
2226
2227 case R_IA64_DTPREL32MSB:
2228 case R_IA64_DTPREL32LSB:
2229 case R_IA64_DTPREL64MSB:
2230 case R_IA64_DTPREL64LSB:
2231 if (bfd_link_pic (info) || maybe_dynamic)
2232 need_entry = NEED_DYNREL;
2233 break;
2234
2235 case R_IA64_LTOFF_DTPREL22:
2236 need_entry = NEED_DTPREL;
2237 break;
2238
2239 case R_IA64_DTPMOD64MSB:
2240 case R_IA64_DTPMOD64LSB:
2241 if (bfd_link_pic (info) || maybe_dynamic)
2242 need_entry = NEED_DYNREL;
2243 break;
2244
2245 case R_IA64_LTOFF_DTPMOD22:
2246 need_entry = NEED_DTPMOD;
2247 break;
2248
2249 case R_IA64_LTOFF_FPTR22:
2250 case R_IA64_LTOFF_FPTR64I:
2251 case R_IA64_LTOFF_FPTR32MSB:
2252 case R_IA64_LTOFF_FPTR32LSB:
2253 case R_IA64_LTOFF_FPTR64MSB:
2254 case R_IA64_LTOFF_FPTR64LSB:
2255 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2256 break;
2257
2258 case R_IA64_FPTR64I:
2259 case R_IA64_FPTR32MSB:
2260 case R_IA64_FPTR32LSB:
2261 case R_IA64_FPTR64MSB:
2262 case R_IA64_FPTR64LSB:
2263 if (bfd_link_pic (info) || h)
2264 need_entry = NEED_FPTR | NEED_DYNREL;
2265 else
2266 need_entry = NEED_FPTR;
2267 break;
2268
2269 case R_IA64_LTOFF22:
2270 case R_IA64_LTOFF64I:
2271 need_entry = NEED_GOT;
2272 break;
2273
2274 case R_IA64_LTOFF22X:
2275 need_entry = NEED_GOTX;
2276 break;
2277
2278 case R_IA64_PLTOFF22:
2279 case R_IA64_PLTOFF64I:
2280 case R_IA64_PLTOFF64MSB:
2281 case R_IA64_PLTOFF64LSB:
2282 need_entry = NEED_PLTOFF;
2283 if (h)
2284 {
2285 if (maybe_dynamic)
2286 need_entry |= NEED_MIN_PLT;
2287 }
2288 else
2289 {
2290 (*info->callbacks->warning)
2291 (info, _("@pltoff reloc against local symbol"), 0,
2292 abfd, 0, (bfd_vma) 0);
2293 }
2294 break;
2295
2296 case R_IA64_PCREL21B:
2297 case R_IA64_PCREL60B:
2298 /* Depending on where this symbol is defined, we may or may not
2299 need a full plt entry. Only skip if we know we'll not need
2300 the entry -- static or symbolic, and the symbol definition
2301 has already been seen. */
2302 if (maybe_dynamic && rel->r_addend == 0)
2303 need_entry = NEED_FULL_PLT;
2304 break;
2305
2306 case R_IA64_IMM14:
2307 case R_IA64_IMM22:
2308 case R_IA64_IMM64:
2309 case R_IA64_DIR32MSB:
2310 case R_IA64_DIR32LSB:
2311 case R_IA64_DIR64MSB:
2312 case R_IA64_DIR64LSB:
2313 /* Shared objects will always need at least a REL relocation. */
2314 if (bfd_link_pic (info) || maybe_dynamic)
2315 need_entry = NEED_DYNREL;
2316 break;
2317
2318 case R_IA64_IPLTMSB:
2319 case R_IA64_IPLTLSB:
2320 /* Shared objects will always need at least a REL relocation. */
2321 if (bfd_link_pic (info) || maybe_dynamic)
2322 need_entry = NEED_DYNREL;
2323 break;
2324
2325 case R_IA64_PCREL22:
2326 case R_IA64_PCREL64I:
2327 case R_IA64_PCREL32MSB:
2328 case R_IA64_PCREL32LSB:
2329 case R_IA64_PCREL64MSB:
2330 case R_IA64_PCREL64LSB:
2331 if (maybe_dynamic)
2332 need_entry = NEED_DYNREL;
2333 break;
2334 }
2335
2336 if (!need_entry)
2337 continue;
2338
2339 if ((need_entry & NEED_FPTR) != 0
2340 && rel->r_addend)
2341 {
2342 (*info->callbacks->warning)
2343 (info, _("non-zero addend in @fptr reloc"), 0,
2344 abfd, 0, (bfd_vma) 0);
2345 }
2346
2347 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2348 return FALSE;
2349 }
2350
2351 /* Now, we only do lookup without insertion, which is very fast
2352 with the modified get_dyn_sym_info. */
2353 for (rel = relocs; rel < relend; ++rel)
2354 {
2355 struct elfNN_ia64_dyn_sym_info *dyn_i;
2356 int dynrel_type = R_IA64_NONE;
2357
2358 r_symndx = ELFNN_R_SYM (rel->r_info);
2359 if (r_symndx >= symtab_hdr->sh_info)
2360 {
2361 /* We're dealing with a global symbol -- find its hash entry
2362 and mark it as being referenced. */
2363 long indx = r_symndx - symtab_hdr->sh_info;
2364 h = elf_sym_hashes (abfd)[indx];
2365 while (h->root.type == bfd_link_hash_indirect
2366 || h->root.type == bfd_link_hash_warning)
2367 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2368
2369 /* PR15323, ref flags aren't set for references in the same
2370 object. */
2371 h->ref_regular = 1;
2372 }
2373 else
2374 h = NULL;
2375
2376 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2377 continue;
2378
2379 /* We can only get preliminary data on whether a symbol is
2380 locally or externally defined, as not all of the input files
2381 have yet been processed. Do something with what we know, as
2382 this may help reduce memory usage and processing time later. */
2383 maybe_dynamic = (h && ((!bfd_link_executable (info)
2384 && (!SYMBOLIC_BIND (info, h)
2385 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2386 || !h->def_regular
2387 || h->root.type == bfd_link_hash_defweak));
2388
2389 need_entry = 0;
2390 switch (ELFNN_R_TYPE (rel->r_info))
2391 {
2392 case R_IA64_TPREL64MSB:
2393 case R_IA64_TPREL64LSB:
2394 if (bfd_link_pic (info) || maybe_dynamic)
2395 need_entry = NEED_DYNREL;
2396 dynrel_type = R_IA64_TPREL64LSB;
2397 if (bfd_link_pic (info))
2398 info->flags |= DF_STATIC_TLS;
2399 break;
2400
2401 case R_IA64_LTOFF_TPREL22:
2402 need_entry = NEED_TPREL;
2403 if (bfd_link_pic (info))
2404 info->flags |= DF_STATIC_TLS;
2405 break;
2406
2407 case R_IA64_DTPREL32MSB:
2408 case R_IA64_DTPREL32LSB:
2409 case R_IA64_DTPREL64MSB:
2410 case R_IA64_DTPREL64LSB:
2411 if (bfd_link_pic (info) || maybe_dynamic)
2412 need_entry = NEED_DYNREL;
2413 dynrel_type = R_IA64_DTPRELNNLSB;
2414 break;
2415
2416 case R_IA64_LTOFF_DTPREL22:
2417 need_entry = NEED_DTPREL;
2418 break;
2419
2420 case R_IA64_DTPMOD64MSB:
2421 case R_IA64_DTPMOD64LSB:
2422 if (bfd_link_pic (info) || maybe_dynamic)
2423 need_entry = NEED_DYNREL;
2424 dynrel_type = R_IA64_DTPMOD64LSB;
2425 break;
2426
2427 case R_IA64_LTOFF_DTPMOD22:
2428 need_entry = NEED_DTPMOD;
2429 break;
2430
2431 case R_IA64_LTOFF_FPTR22:
2432 case R_IA64_LTOFF_FPTR64I:
2433 case R_IA64_LTOFF_FPTR32MSB:
2434 case R_IA64_LTOFF_FPTR32LSB:
2435 case R_IA64_LTOFF_FPTR64MSB:
2436 case R_IA64_LTOFF_FPTR64LSB:
2437 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2438 break;
2439
2440 case R_IA64_FPTR64I:
2441 case R_IA64_FPTR32MSB:
2442 case R_IA64_FPTR32LSB:
2443 case R_IA64_FPTR64MSB:
2444 case R_IA64_FPTR64LSB:
2445 if (bfd_link_pic (info) || h)
2446 need_entry = NEED_FPTR | NEED_DYNREL;
2447 else
2448 need_entry = NEED_FPTR;
2449 dynrel_type = R_IA64_FPTRNNLSB;
2450 break;
2451
2452 case R_IA64_LTOFF22:
2453 case R_IA64_LTOFF64I:
2454 need_entry = NEED_GOT;
2455 break;
2456
2457 case R_IA64_LTOFF22X:
2458 need_entry = NEED_GOTX;
2459 break;
2460
2461 case R_IA64_PLTOFF22:
2462 case R_IA64_PLTOFF64I:
2463 case R_IA64_PLTOFF64MSB:
2464 case R_IA64_PLTOFF64LSB:
2465 need_entry = NEED_PLTOFF;
2466 if (h)
2467 {
2468 if (maybe_dynamic)
2469 need_entry |= NEED_MIN_PLT;
2470 }
2471 break;
2472
2473 case R_IA64_PCREL21B:
2474 case R_IA64_PCREL60B:
2475 /* Depending on where this symbol is defined, we may or may not
2476 need a full plt entry. Only skip if we know we'll not need
2477 the entry -- static or symbolic, and the symbol definition
2478 has already been seen. */
2479 if (maybe_dynamic && rel->r_addend == 0)
2480 need_entry = NEED_FULL_PLT;
2481 break;
2482
2483 case R_IA64_IMM14:
2484 case R_IA64_IMM22:
2485 case R_IA64_IMM64:
2486 case R_IA64_DIR32MSB:
2487 case R_IA64_DIR32LSB:
2488 case R_IA64_DIR64MSB:
2489 case R_IA64_DIR64LSB:
2490 /* Shared objects will always need at least a REL relocation. */
2491 if (bfd_link_pic (info) || maybe_dynamic)
2492 need_entry = NEED_DYNREL;
2493 dynrel_type = R_IA64_DIRNNLSB;
2494 break;
2495
2496 case R_IA64_IPLTMSB:
2497 case R_IA64_IPLTLSB:
2498 /* Shared objects will always need at least a REL relocation. */
2499 if (bfd_link_pic (info) || maybe_dynamic)
2500 need_entry = NEED_DYNREL;
2501 dynrel_type = R_IA64_IPLTLSB;
2502 break;
2503
2504 case R_IA64_PCREL22:
2505 case R_IA64_PCREL64I:
2506 case R_IA64_PCREL32MSB:
2507 case R_IA64_PCREL32LSB:
2508 case R_IA64_PCREL64MSB:
2509 case R_IA64_PCREL64LSB:
2510 if (maybe_dynamic)
2511 need_entry = NEED_DYNREL;
2512 dynrel_type = R_IA64_PCRELNNLSB;
2513 break;
2514 }
2515
2516 if (!need_entry)
2517 continue;
2518
2519 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2520
2521 /* Record whether or not this is a local symbol. */
2522 dyn_i->h = h;
2523
2524 /* Create what's needed. */
2525 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2526 | NEED_DTPMOD | NEED_DTPREL))
2527 {
2528 if (!got)
2529 {
2530 got = get_got (abfd, info, ia64_info);
2531 if (!got)
2532 return FALSE;
2533 }
2534 if (need_entry & NEED_GOT)
2535 dyn_i->want_got = 1;
2536 if (need_entry & NEED_GOTX)
2537 dyn_i->want_gotx = 1;
2538 if (need_entry & NEED_TPREL)
2539 dyn_i->want_tprel = 1;
2540 if (need_entry & NEED_DTPMOD)
2541 dyn_i->want_dtpmod = 1;
2542 if (need_entry & NEED_DTPREL)
2543 dyn_i->want_dtprel = 1;
2544 }
2545 if (need_entry & NEED_FPTR)
2546 {
2547 if (!fptr)
2548 {
2549 fptr = get_fptr (abfd, info, ia64_info);
2550 if (!fptr)
2551 return FALSE;
2552 }
2553
2554 /* FPTRs for shared libraries are allocated by the dynamic
2555 linker. Make sure this local symbol will appear in the
2556 dynamic symbol table. */
2557 if (!h && bfd_link_pic (info))
2558 {
2559 if (! (bfd_elf_link_record_local_dynamic_symbol
2560 (info, abfd, (long) r_symndx)))
2561 return FALSE;
2562 }
2563
2564 dyn_i->want_fptr = 1;
2565 }
2566 if (need_entry & NEED_LTOFF_FPTR)
2567 dyn_i->want_ltoff_fptr = 1;
2568 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2569 {
2570 if (!ia64_info->root.dynobj)
2571 ia64_info->root.dynobj = abfd;
2572 h->needs_plt = 1;
2573 dyn_i->want_plt = 1;
2574 }
2575 if (need_entry & NEED_FULL_PLT)
2576 dyn_i->want_plt2 = 1;
2577 if (need_entry & NEED_PLTOFF)
2578 {
2579 /* This is needed here, in case @pltoff is used in a non-shared
2580 link. */
2581 if (!pltoff)
2582 {
2583 pltoff = get_pltoff (abfd, info, ia64_info);
2584 if (!pltoff)
2585 return FALSE;
2586 }
2587
2588 dyn_i->want_pltoff = 1;
2589 }
2590 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2591 {
2592 if (!srel)
2593 {
2594 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2595 if (!srel)
2596 return FALSE;
2597 }
2598 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2599 (sec->flags & SEC_READONLY) != 0))
2600 return FALSE;
2601 }
2602 }
2603
2604 return TRUE;
2605 }
2606
2607 /* For cleanliness, and potentially faster dynamic loading, allocate
2608 external GOT entries first. */
2609
2610 static bfd_boolean
2611 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2612 void * data)
2613 {
2614 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2615
2616 if ((dyn_i->want_got || dyn_i->want_gotx)
2617 && ! dyn_i->want_fptr
2618 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2619 {
2620 dyn_i->got_offset = x->ofs;
2621 x->ofs += 8;
2622 }
2623 if (dyn_i->want_tprel)
2624 {
2625 dyn_i->tprel_offset = x->ofs;
2626 x->ofs += 8;
2627 }
2628 if (dyn_i->want_dtpmod)
2629 {
2630 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2631 {
2632 dyn_i->dtpmod_offset = x->ofs;
2633 x->ofs += 8;
2634 }
2635 else
2636 {
2637 struct elfNN_ia64_link_hash_table *ia64_info;
2638
2639 ia64_info = elfNN_ia64_hash_table (x->info);
2640 if (ia64_info == NULL)
2641 return FALSE;
2642
2643 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2644 {
2645 ia64_info->self_dtpmod_offset = x->ofs;
2646 x->ofs += 8;
2647 }
2648 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2649 }
2650 }
2651 if (dyn_i->want_dtprel)
2652 {
2653 dyn_i->dtprel_offset = x->ofs;
2654 x->ofs += 8;
2655 }
2656 return TRUE;
2657 }
2658
2659 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2660
2661 static bfd_boolean
2662 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2663 void * data)
2664 {
2665 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2666
2667 if (dyn_i->want_got
2668 && dyn_i->want_fptr
2669 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2670 {
2671 dyn_i->got_offset = x->ofs;
2672 x->ofs += 8;
2673 }
2674 return TRUE;
2675 }
2676
2677 /* Lastly, allocate all the GOT entries for local data. */
2678
2679 static bfd_boolean
2680 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2681 void * data)
2682 {
2683 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2684
2685 if ((dyn_i->want_got || dyn_i->want_gotx)
2686 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2687 {
2688 dyn_i->got_offset = x->ofs;
2689 x->ofs += 8;
2690 }
2691 return TRUE;
2692 }
2693
2694 /* Search for the index of a global symbol in it's defining object file. */
2695
2696 static long
2697 global_sym_index (struct elf_link_hash_entry *h)
2698 {
2699 struct elf_link_hash_entry **p;
2700 bfd *obj;
2701
2702 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2703 || h->root.type == bfd_link_hash_defweak);
2704
2705 obj = h->root.u.def.section->owner;
2706 for (p = elf_sym_hashes (obj); *p != h; ++p)
2707 continue;
2708
2709 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2710 }
2711
2712 /* Allocate function descriptors. We can do these for every function
2713 in a main executable that is not exported. */
2714
2715 static bfd_boolean
2716 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2717 {
2718 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2719
2720 if (dyn_i->want_fptr)
2721 {
2722 struct elf_link_hash_entry *h = dyn_i->h;
2723
2724 if (h)
2725 while (h->root.type == bfd_link_hash_indirect
2726 || h->root.type == bfd_link_hash_warning)
2727 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2728
2729 if (!bfd_link_executable (x->info)
2730 && (!h
2731 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2732 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h))
2733 || (h->root.type != bfd_link_hash_undefweak
2734 && h->root.type != bfd_link_hash_undefined)))
2735 {
2736 if (h && h->dynindx == -1)
2737 {
2738 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2739 || (h->root.type == bfd_link_hash_defweak));
2740
2741 if (!bfd_elf_link_record_local_dynamic_symbol
2742 (x->info, h->root.u.def.section->owner,
2743 global_sym_index (h)))
2744 return FALSE;
2745 }
2746
2747 dyn_i->want_fptr = 0;
2748 }
2749 else if (h == NULL || h->dynindx == -1)
2750 {
2751 dyn_i->fptr_offset = x->ofs;
2752 x->ofs += 16;
2753 }
2754 else
2755 dyn_i->want_fptr = 0;
2756 }
2757 return TRUE;
2758 }
2759
2760 /* Allocate all the minimal PLT entries. */
2761
2762 static bfd_boolean
2763 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2764 void * data)
2765 {
2766 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2767
2768 if (dyn_i->want_plt)
2769 {
2770 struct elf_link_hash_entry *h = dyn_i->h;
2771
2772 if (h)
2773 while (h->root.type == bfd_link_hash_indirect
2774 || h->root.type == bfd_link_hash_warning)
2775 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2776
2777 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2778 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2779 {
2780 bfd_size_type offset = x->ofs;
2781 if (offset == 0)
2782 offset = PLT_HEADER_SIZE;
2783 dyn_i->plt_offset = offset;
2784 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2785
2786 dyn_i->want_pltoff = 1;
2787 }
2788 else
2789 {
2790 dyn_i->want_plt = 0;
2791 dyn_i->want_plt2 = 0;
2792 }
2793 }
2794 return TRUE;
2795 }
2796
2797 /* Allocate all the full PLT entries. */
2798
2799 static bfd_boolean
2800 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2801 void * data)
2802 {
2803 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2804
2805 if (dyn_i->want_plt2)
2806 {
2807 struct elf_link_hash_entry *h = dyn_i->h;
2808 bfd_size_type ofs = x->ofs;
2809
2810 dyn_i->plt2_offset = ofs;
2811 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2812
2813 while (h->root.type == bfd_link_hash_indirect
2814 || h->root.type == bfd_link_hash_warning)
2815 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2816 dyn_i->h->plt.offset = ofs;
2817 }
2818 return TRUE;
2819 }
2820
2821 /* Allocate all the PLTOFF entries requested by relocations and
2822 plt entries. We can't share space with allocated FPTR entries,
2823 because the latter are not necessarily addressable by the GP.
2824 ??? Relaxation might be able to determine that they are. */
2825
2826 static bfd_boolean
2827 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2828 void * data)
2829 {
2830 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2831
2832 if (dyn_i->want_pltoff)
2833 {
2834 dyn_i->pltoff_offset = x->ofs;
2835 x->ofs += 16;
2836 }
2837 return TRUE;
2838 }
2839
2840 /* Allocate dynamic relocations for those symbols that turned out
2841 to be dynamic. */
2842
2843 static bfd_boolean
2844 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2845 void * data)
2846 {
2847 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2848 struct elfNN_ia64_link_hash_table *ia64_info;
2849 struct elfNN_ia64_dyn_reloc_entry *rent;
2850 bfd_boolean dynamic_symbol, shared, resolved_zero;
2851
2852 ia64_info = elfNN_ia64_hash_table (x->info);
2853 if (ia64_info == NULL)
2854 return FALSE;
2855
2856 /* Note that this can't be used in relation to FPTR relocs below. */
2857 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2858
2859 shared = bfd_link_pic (x->info);
2860 resolved_zero = (dyn_i->h
2861 && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info,
2862 dyn_i->h));
2863
2864 /* Take care of the GOT and PLT relocations. */
2865
2866 if ((!resolved_zero
2867 && (dynamic_symbol || shared)
2868 && (dyn_i->want_got || dyn_i->want_gotx))
2869 || (dyn_i->want_ltoff_fptr
2870 && dyn_i->h
2871 && dyn_i->h->dynindx != -1))
2872 {
2873 if (!dyn_i->want_ltoff_fptr
2874 || !bfd_link_pie (x->info)
2875 || dyn_i->h == NULL
2876 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2877 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2878 }
2879 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2880 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2881 if (dynamic_symbol && dyn_i->want_dtpmod)
2882 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2883 if (dynamic_symbol && dyn_i->want_dtprel)
2884 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2885
2886 if (x->only_got)
2887 return TRUE;
2888
2889 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2890 {
2891 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2892 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2893 }
2894
2895 if (!resolved_zero && dyn_i->want_pltoff)
2896 {
2897 bfd_size_type t = 0;
2898
2899 /* Dynamic symbols get one IPLT relocation. Local symbols in
2900 shared libraries get two REL relocations. Local symbols in
2901 main applications get nothing. */
2902 if (dynamic_symbol)
2903 t = sizeof (ElfNN_External_Rela);
2904 else if (shared)
2905 t = 2 * sizeof (ElfNN_External_Rela);
2906
2907 ia64_info->rel_pltoff_sec->size += t;
2908 }
2909
2910 /* Take care of the normal data relocations. */
2911
2912 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2913 {
2914 int count = rent->count;
2915
2916 switch (rent->type)
2917 {
2918 case R_IA64_FPTR32LSB:
2919 case R_IA64_FPTR64LSB:
2920 /* Allocate one iff !want_fptr and not PIE, which by this point
2921 will be true only if we're actually allocating one statically
2922 in the main executable. Position independent executables
2923 need a relative reloc. */
2924 if (dyn_i->want_fptr && !bfd_link_pie (x->info))
2925 continue;
2926 break;
2927 case R_IA64_PCREL32LSB:
2928 case R_IA64_PCREL64LSB:
2929 if (!dynamic_symbol)
2930 continue;
2931 break;
2932 case R_IA64_DIR32LSB:
2933 case R_IA64_DIR64LSB:
2934 if (!dynamic_symbol && !shared)
2935 continue;
2936 break;
2937 case R_IA64_IPLTLSB:
2938 if (!dynamic_symbol && !shared)
2939 continue;
2940 /* Use two REL relocations for IPLT relocations
2941 against local symbols. */
2942 if (!dynamic_symbol)
2943 count *= 2;
2944 break;
2945 case R_IA64_DTPREL32LSB:
2946 case R_IA64_TPREL64LSB:
2947 case R_IA64_DTPREL64LSB:
2948 case R_IA64_DTPMOD64LSB:
2949 break;
2950 default:
2951 abort ();
2952 }
2953 if (rent->reltext)
2954 ia64_info->reltext = 1;
2955 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2956 }
2957
2958 return TRUE;
2959 }
2960
2961 static bfd_boolean
2962 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2963 struct elf_link_hash_entry *h)
2964 {
2965 /* ??? Undefined symbols with PLT entries should be re-defined
2966 to be the PLT entry. */
2967
2968 /* If this is a weak symbol, and there is a real definition, the
2969 processor independent code will have arranged for us to see the
2970 real definition first, and we can just use the same value. */
2971 if (h->is_weakalias)
2972 {
2973 struct elf_link_hash_entry *def = weakdef (h);
2974 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2975 h->root.u.def.section = def->root.u.def.section;
2976 h->root.u.def.value = def->root.u.def.value;
2977 return TRUE;
2978 }
2979
2980 /* If this is a reference to a symbol defined by a dynamic object which
2981 is not a function, we might allocate the symbol in our .dynbss section
2982 and allocate a COPY dynamic relocation.
2983
2984 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2985 of hackery. */
2986
2987 return TRUE;
2988 }
2989
2990 static bfd_boolean
2991 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2992 struct bfd_link_info *info)
2993 {
2994 struct elfNN_ia64_allocate_data data;
2995 struct elfNN_ia64_link_hash_table *ia64_info;
2996 asection *sec;
2997 bfd *dynobj;
2998 bfd_boolean relplt = FALSE;
2999
3000 ia64_info = elfNN_ia64_hash_table (info);
3001 if (ia64_info == NULL)
3002 return FALSE;
3003 dynobj = ia64_info->root.dynobj;
3004 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
3005 BFD_ASSERT(dynobj != NULL);
3006 data.info = info;
3007
3008 /* Set the contents of the .interp section to the interpreter. */
3009 if (ia64_info->root.dynamic_sections_created
3010 && bfd_link_executable (info) && !info->nointerp)
3011 {
3012 sec = bfd_get_linker_section (dynobj, ".interp");
3013 BFD_ASSERT (sec != NULL);
3014 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3015 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3016 }
3017
3018 /* Allocate the GOT entries. */
3019
3020 if (ia64_info->root.sgot)
3021 {
3022 data.ofs = 0;
3023 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3024 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3025 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3026 ia64_info->root.sgot->size = data.ofs;
3027 }
3028
3029 /* Allocate the FPTR entries. */
3030
3031 if (ia64_info->fptr_sec)
3032 {
3033 data.ofs = 0;
3034 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3035 ia64_info->fptr_sec->size = data.ofs;
3036 }
3037
3038 /* Now that we've seen all of the input files, we can decide which
3039 symbols need plt entries. Allocate the minimal PLT entries first.
3040 We do this even though dynamic_sections_created may be FALSE, because
3041 this has the side-effect of clearing want_plt and want_plt2. */
3042
3043 data.ofs = 0;
3044 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3045
3046 ia64_info->minplt_entries = 0;
3047 if (data.ofs)
3048 {
3049 ia64_info->minplt_entries
3050 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3051 }
3052
3053 /* Align the pointer for the plt2 entries. */
3054 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3055
3056 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3057 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3058 {
3059 /* FIXME: we always reserve the memory for dynamic linker even if
3060 there are no PLT entries since dynamic linker may assume the
3061 reserved memory always exists. */
3062
3063 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3064
3065 ia64_info->root.splt->size = data.ofs;
3066
3067 /* If we've got a .plt, we need some extra memory for the dynamic
3068 linker. We stuff these in .got.plt. */
3069 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
3070 }
3071
3072 /* Allocate the PLTOFF entries. */
3073
3074 if (ia64_info->pltoff_sec)
3075 {
3076 data.ofs = 0;
3077 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3078 ia64_info->pltoff_sec->size = data.ofs;
3079 }
3080
3081 if (ia64_info->root.dynamic_sections_created)
3082 {
3083 /* Allocate space for the dynamic relocations that turned out to be
3084 required. */
3085
3086 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3087 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3088 data.only_got = FALSE;
3089 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3090 }
3091
3092 /* We have now determined the sizes of the various dynamic sections.
3093 Allocate memory for them. */
3094 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3095 {
3096 bfd_boolean strip;
3097
3098 if (!(sec->flags & SEC_LINKER_CREATED))
3099 continue;
3100
3101 /* If we don't need this section, strip it from the output file.
3102 There were several sections primarily related to dynamic
3103 linking that must be create before the linker maps input
3104 sections to output sections. The linker does that before
3105 bfd_elf_size_dynamic_sections is called, and it is that
3106 function which decides whether anything needs to go into
3107 these sections. */
3108
3109 strip = (sec->size == 0);
3110
3111 if (sec == ia64_info->root.sgot)
3112 strip = FALSE;
3113 else if (sec == ia64_info->root.srelgot)
3114 {
3115 if (strip)
3116 ia64_info->root.srelgot = NULL;
3117 else
3118 /* We use the reloc_count field as a counter if we need to
3119 copy relocs into the output file. */
3120 sec->reloc_count = 0;
3121 }
3122 else if (sec == ia64_info->fptr_sec)
3123 {
3124 if (strip)
3125 ia64_info->fptr_sec = NULL;
3126 }
3127 else if (sec == ia64_info->rel_fptr_sec)
3128 {
3129 if (strip)
3130 ia64_info->rel_fptr_sec = NULL;
3131 else
3132 /* We use the reloc_count field as a counter if we need to
3133 copy relocs into the output file. */
3134 sec->reloc_count = 0;
3135 }
3136 else if (sec == ia64_info->root.splt)
3137 {
3138 if (strip)
3139 ia64_info->root.splt = NULL;
3140 }
3141 else if (sec == ia64_info->pltoff_sec)
3142 {
3143 if (strip)
3144 ia64_info->pltoff_sec = NULL;
3145 }
3146 else if (sec == ia64_info->rel_pltoff_sec)
3147 {
3148 if (strip)
3149 ia64_info->rel_pltoff_sec = NULL;
3150 else
3151 {
3152 relplt = TRUE;
3153 /* We use the reloc_count field as a counter if we need to
3154 copy relocs into the output file. */
3155 sec->reloc_count = 0;
3156 }
3157 }
3158 else
3159 {
3160 const char *name;
3161
3162 /* It's OK to base decisions on the section name, because none
3163 of the dynobj section names depend upon the input files. */
3164 name = bfd_section_name (sec);
3165
3166 if (strcmp (name, ".got.plt") == 0)
3167 strip = FALSE;
3168 else if (CONST_STRNEQ (name, ".rel"))
3169 {
3170 if (!strip)
3171 {
3172 /* We use the reloc_count field as a counter if we need to
3173 copy relocs into the output file. */
3174 sec->reloc_count = 0;
3175 }
3176 }
3177 else
3178 continue;
3179 }
3180
3181 if (strip)
3182 sec->flags |= SEC_EXCLUDE;
3183 else
3184 {
3185 /* Allocate memory for the section contents. */
3186 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3187 if (sec->contents == NULL && sec->size != 0)
3188 return FALSE;
3189 }
3190 }
3191
3192 if (ia64_info->root.dynamic_sections_created)
3193 {
3194 /* Add some entries to the .dynamic section. We fill in the values
3195 later (in finish_dynamic_sections) but we must add the entries now
3196 so that we get the correct size for the .dynamic section. */
3197
3198 if (bfd_link_executable (info))
3199 {
3200 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3201 by the debugger. */
3202 #define add_dynamic_entry(TAG, VAL) \
3203 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3204
3205 if (!add_dynamic_entry (DT_DEBUG, 0))
3206 return FALSE;
3207 }
3208
3209 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3210 return FALSE;
3211 if (!add_dynamic_entry (DT_PLTGOT, 0))
3212 return FALSE;
3213
3214 if (relplt)
3215 {
3216 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3217 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3218 || !add_dynamic_entry (DT_JMPREL, 0))
3219 return FALSE;
3220 }
3221
3222 if (!add_dynamic_entry (DT_RELA, 0)
3223 || !add_dynamic_entry (DT_RELASZ, 0)
3224 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3225 return FALSE;
3226
3227 if (ia64_info->reltext)
3228 {
3229 if (!add_dynamic_entry (DT_TEXTREL, 0))
3230 return FALSE;
3231 info->flags |= DF_TEXTREL;
3232 }
3233 }
3234
3235 /* ??? Perhaps force __gp local. */
3236
3237 return TRUE;
3238 }
3239
3240 static void
3241 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3242 asection *sec, asection *srel,
3243 bfd_vma offset, unsigned int type,
3244 long dynindx, bfd_vma addend)
3245 {
3246 Elf_Internal_Rela outrel;
3247 bfd_byte *loc;
3248
3249 BFD_ASSERT (dynindx != -1);
3250 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3251 outrel.r_addend = addend;
3252 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3253 if (outrel.r_offset >= (bfd_vma) -2)
3254 {
3255 /* Run for the hills. We shouldn't be outputting a relocation
3256 for this. So do what everyone else does and output a no-op. */
3257 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3258 outrel.r_addend = 0;
3259 outrel.r_offset = 0;
3260 }
3261 else
3262 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3263
3264 loc = srel->contents;
3265 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3266 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3267 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3268 }
3269
3270 /* Store an entry for target address TARGET_ADDR in the linkage table
3271 and return the gp-relative address of the linkage table entry. */
3272
3273 static bfd_vma
3274 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3275 struct elfNN_ia64_dyn_sym_info *dyn_i,
3276 long dynindx, bfd_vma addend, bfd_vma value,
3277 unsigned int dyn_r_type)
3278 {
3279 struct elfNN_ia64_link_hash_table *ia64_info;
3280 asection *got_sec;
3281 bfd_boolean done;
3282 bfd_vma got_offset;
3283
3284 ia64_info = elfNN_ia64_hash_table (info);
3285 if (ia64_info == NULL)
3286 return 0;
3287
3288 got_sec = ia64_info->root.sgot;
3289
3290 switch (dyn_r_type)
3291 {
3292 case R_IA64_TPREL64LSB:
3293 done = dyn_i->tprel_done;
3294 dyn_i->tprel_done = TRUE;
3295 got_offset = dyn_i->tprel_offset;
3296 break;
3297 case R_IA64_DTPMOD64LSB:
3298 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3299 {
3300 done = dyn_i->dtpmod_done;
3301 dyn_i->dtpmod_done = TRUE;
3302 }
3303 else
3304 {
3305 done = ia64_info->self_dtpmod_done;
3306 ia64_info->self_dtpmod_done = TRUE;
3307 dynindx = 0;
3308 }
3309 got_offset = dyn_i->dtpmod_offset;
3310 break;
3311 case R_IA64_DTPREL32LSB:
3312 case R_IA64_DTPREL64LSB:
3313 done = dyn_i->dtprel_done;
3314 dyn_i->dtprel_done = TRUE;
3315 got_offset = dyn_i->dtprel_offset;
3316 break;
3317 default:
3318 done = dyn_i->got_done;
3319 dyn_i->got_done = TRUE;
3320 got_offset = dyn_i->got_offset;
3321 break;
3322 }
3323
3324 BFD_ASSERT ((got_offset & 7) == 0);
3325
3326 if (! done)
3327 {
3328 /* Store the target address in the linkage table entry. */
3329 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3330
3331 /* Install a dynamic relocation if needed. */
3332 if (((bfd_link_pic (info)
3333 && (!dyn_i->h
3334 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3335 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3336 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3337 && dyn_r_type != R_IA64_DTPREL32LSB
3338 && dyn_r_type != R_IA64_DTPREL64LSB)
3339 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3340 || (dynindx != -1
3341 && (dyn_r_type == R_IA64_FPTR32LSB
3342 || dyn_r_type == R_IA64_FPTR64LSB)))
3343 && (!dyn_i->want_ltoff_fptr
3344 || !bfd_link_pie (info)
3345 || !dyn_i->h
3346 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3347 {
3348 if (dynindx == -1
3349 && dyn_r_type != R_IA64_TPREL64LSB
3350 && dyn_r_type != R_IA64_DTPMOD64LSB
3351 && dyn_r_type != R_IA64_DTPREL32LSB
3352 && dyn_r_type != R_IA64_DTPREL64LSB)
3353 {
3354 dyn_r_type = R_IA64_RELNNLSB;
3355 dynindx = 0;
3356 addend = value;
3357 }
3358
3359 if (bfd_big_endian (abfd))
3360 {
3361 switch (dyn_r_type)
3362 {
3363 case R_IA64_REL32LSB:
3364 dyn_r_type = R_IA64_REL32MSB;
3365 break;
3366 case R_IA64_DIR32LSB:
3367 dyn_r_type = R_IA64_DIR32MSB;
3368 break;
3369 case R_IA64_FPTR32LSB:
3370 dyn_r_type = R_IA64_FPTR32MSB;
3371 break;
3372 case R_IA64_DTPREL32LSB:
3373 dyn_r_type = R_IA64_DTPREL32MSB;
3374 break;
3375 case R_IA64_REL64LSB:
3376 dyn_r_type = R_IA64_REL64MSB;
3377 break;
3378 case R_IA64_DIR64LSB:
3379 dyn_r_type = R_IA64_DIR64MSB;
3380 break;
3381 case R_IA64_FPTR64LSB:
3382 dyn_r_type = R_IA64_FPTR64MSB;
3383 break;
3384 case R_IA64_TPREL64LSB:
3385 dyn_r_type = R_IA64_TPREL64MSB;
3386 break;
3387 case R_IA64_DTPMOD64LSB:
3388 dyn_r_type = R_IA64_DTPMOD64MSB;
3389 break;
3390 case R_IA64_DTPREL64LSB:
3391 dyn_r_type = R_IA64_DTPREL64MSB;
3392 break;
3393 default:
3394 BFD_ASSERT (FALSE);
3395 break;
3396 }
3397 }
3398
3399 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3400 ia64_info->root.srelgot,
3401 got_offset, dyn_r_type,
3402 dynindx, addend);
3403 }
3404 }
3405
3406 /* Return the address of the linkage table entry. */
3407 value = (got_sec->output_section->vma
3408 + got_sec->output_offset
3409 + got_offset);
3410
3411 return value;
3412 }
3413
3414 /* Fill in a function descriptor consisting of the function's code
3415 address and its global pointer. Return the descriptor's address. */
3416
3417 static bfd_vma
3418 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3419 struct elfNN_ia64_dyn_sym_info *dyn_i,
3420 bfd_vma value)
3421 {
3422 struct elfNN_ia64_link_hash_table *ia64_info;
3423 asection *fptr_sec;
3424
3425 ia64_info = elfNN_ia64_hash_table (info);
3426 if (ia64_info == NULL)
3427 return 0;
3428
3429 fptr_sec = ia64_info->fptr_sec;
3430
3431 if (!dyn_i->fptr_done)
3432 {
3433 dyn_i->fptr_done = 1;
3434
3435 /* Fill in the function descriptor. */
3436 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3437 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3438 fptr_sec->contents + dyn_i->fptr_offset + 8);
3439 if (ia64_info->rel_fptr_sec)
3440 {
3441 Elf_Internal_Rela outrel;
3442 bfd_byte *loc;
3443
3444 if (bfd_little_endian (abfd))
3445 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3446 else
3447 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3448 outrel.r_addend = value;
3449 outrel.r_offset = (fptr_sec->output_section->vma
3450 + fptr_sec->output_offset
3451 + dyn_i->fptr_offset);
3452 loc = ia64_info->rel_fptr_sec->contents;
3453 loc += ia64_info->rel_fptr_sec->reloc_count++
3454 * sizeof (ElfNN_External_Rela);
3455 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3456 }
3457 }
3458
3459 /* Return the descriptor's address. */
3460 value = (fptr_sec->output_section->vma
3461 + fptr_sec->output_offset
3462 + dyn_i->fptr_offset);
3463
3464 return value;
3465 }
3466
3467 /* Fill in a PLTOFF entry consisting of the function's code address
3468 and its global pointer. Return the descriptor's address. */
3469
3470 static bfd_vma
3471 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3472 struct elfNN_ia64_dyn_sym_info *dyn_i,
3473 bfd_vma value, bfd_boolean is_plt)
3474 {
3475 struct elfNN_ia64_link_hash_table *ia64_info;
3476 asection *pltoff_sec;
3477
3478 ia64_info = elfNN_ia64_hash_table (info);
3479 if (ia64_info == NULL)
3480 return 0;
3481
3482 pltoff_sec = ia64_info->pltoff_sec;
3483
3484 /* Don't do anything if this symbol uses a real PLT entry. In
3485 that case, we'll fill this in during finish_dynamic_symbol. */
3486 if ((! dyn_i->want_plt || is_plt)
3487 && !dyn_i->pltoff_done)
3488 {
3489 bfd_vma gp = _bfd_get_gp_value (abfd);
3490
3491 /* Fill in the function descriptor. */
3492 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3493 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3494
3495 /* Install dynamic relocations if needed. */
3496 if (!is_plt
3497 && bfd_link_pic (info)
3498 && (!dyn_i->h
3499 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3500 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3501 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3502 {
3503 unsigned int dyn_r_type;
3504
3505 if (bfd_big_endian (abfd))
3506 dyn_r_type = R_IA64_RELNNMSB;
3507 else
3508 dyn_r_type = R_IA64_RELNNLSB;
3509
3510 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3511 ia64_info->rel_pltoff_sec,
3512 dyn_i->pltoff_offset,
3513 dyn_r_type, 0, value);
3514 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3515 ia64_info->rel_pltoff_sec,
3516 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3517 dyn_r_type, 0, gp);
3518 }
3519
3520 dyn_i->pltoff_done = 1;
3521 }
3522
3523 /* Return the descriptor's address. */
3524 value = (pltoff_sec->output_section->vma
3525 + pltoff_sec->output_offset
3526 + dyn_i->pltoff_offset);
3527
3528 return value;
3529 }
3530
3531 /* Return the base VMA address which should be subtracted from real addresses
3532 when resolving @tprel() relocation.
3533 Main program TLS (whose template starts at PT_TLS p_vaddr)
3534 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3535
3536 static bfd_vma
3537 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3538 {
3539 asection *tls_sec = elf_hash_table (info)->tls_sec;
3540 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3541 tls_sec->alignment_power);
3542 }
3543
3544 /* Return the base VMA address which should be subtracted from real addresses
3545 when resolving @dtprel() relocation.
3546 This is PT_TLS segment p_vaddr. */
3547
3548 static bfd_vma
3549 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3550 {
3551 return elf_hash_table (info)->tls_sec->vma;
3552 }
3553
3554 /* Called through qsort to sort the .IA_64.unwind section during a
3555 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3556 to the output bfd so we can do proper endianness frobbing. */
3557
3558 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3559
3560 static int
3561 elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3562 {
3563 bfd_vma av, bv;
3564
3565 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3566 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3567
3568 return (av < bv ? -1 : av > bv ? 1 : 0);
3569 }
3570
3571 /* Make sure we've got ourselves a nice fat __gp value. */
3572 static bfd_boolean
3573 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3574 {
3575 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3576 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3577 struct elf_link_hash_entry *gp;
3578 bfd_vma gp_val;
3579 asection *os;
3580 struct elfNN_ia64_link_hash_table *ia64_info;
3581
3582 ia64_info = elfNN_ia64_hash_table (info);
3583 if (ia64_info == NULL)
3584 return FALSE;
3585
3586 /* Find the min and max vma of all sections marked short. Also collect
3587 min and max vma of any type, for use in selecting a nice gp. */
3588 for (os = abfd->sections; os ; os = os->next)
3589 {
3590 bfd_vma lo, hi;
3591
3592 if ((os->flags & SEC_ALLOC) == 0)
3593 continue;
3594
3595 lo = os->vma;
3596 /* When this function is called from elfNN_ia64_final_link
3597 the correct value to use is os->size. When called from
3598 elfNN_ia64_relax_section we are in the middle of section
3599 sizing; some sections will already have os->size set, others
3600 will have os->size zero and os->rawsize the previous size. */
3601 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3602 if (hi < lo)
3603 hi = (bfd_vma) -1;
3604
3605 if (min_vma > lo)
3606 min_vma = lo;
3607 if (max_vma < hi)
3608 max_vma = hi;
3609 if (os->flags & SEC_SMALL_DATA)
3610 {
3611 if (min_short_vma > lo)
3612 min_short_vma = lo;
3613 if (max_short_vma < hi)
3614 max_short_vma = hi;
3615 }
3616 }
3617
3618 if (ia64_info->min_short_sec)
3619 {
3620 if (min_short_vma
3621 > (ia64_info->min_short_sec->vma
3622 + ia64_info->min_short_offset))
3623 min_short_vma = (ia64_info->min_short_sec->vma
3624 + ia64_info->min_short_offset);
3625 if (max_short_vma
3626 < (ia64_info->max_short_sec->vma
3627 + ia64_info->max_short_offset))
3628 max_short_vma = (ia64_info->max_short_sec->vma
3629 + ia64_info->max_short_offset);
3630 }
3631
3632 /* See if the user wants to force a value. */
3633 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3634 FALSE, FALSE);
3635
3636 if (gp
3637 && (gp->root.type == bfd_link_hash_defined
3638 || gp->root.type == bfd_link_hash_defweak))
3639 {
3640 asection *gp_sec = gp->root.u.def.section;
3641 gp_val = (gp->root.u.def.value
3642 + gp_sec->output_section->vma
3643 + gp_sec->output_offset);
3644 }
3645 else
3646 {
3647 /* Pick a sensible value. */
3648
3649 if (ia64_info->min_short_sec)
3650 {
3651 bfd_vma short_range = max_short_vma - min_short_vma;
3652
3653 /* If min_short_sec is set, pick one in the middle bewteen
3654 min_short_vma and max_short_vma. */
3655 if (short_range >= 0x400000)
3656 goto overflow;
3657 gp_val = min_short_vma + short_range / 2;
3658 }
3659 else
3660 {
3661 asection *got_sec = ia64_info->root.sgot;
3662
3663 /* Start with just the address of the .got. */
3664 if (got_sec)
3665 gp_val = got_sec->output_section->vma;
3666 else if (max_short_vma != 0)
3667 gp_val = min_short_vma;
3668 else if (max_vma - min_vma < 0x200000)
3669 gp_val = min_vma;
3670 else
3671 gp_val = max_vma - 0x200000 + 8;
3672 }
3673
3674 /* If it is possible to address the entire image, but we
3675 don't with the choice above, adjust. */
3676 if (max_vma - min_vma < 0x400000
3677 && (max_vma - gp_val >= 0x200000
3678 || gp_val - min_vma > 0x200000))
3679 gp_val = min_vma + 0x200000;
3680 else if (max_short_vma != 0)
3681 {
3682 /* If we don't cover all the short data, adjust. */
3683 if (max_short_vma - gp_val >= 0x200000)
3684 gp_val = min_short_vma + 0x200000;
3685
3686 /* If we're addressing stuff past the end, adjust back. */
3687 if (gp_val > max_vma)
3688 gp_val = max_vma - 0x200000 + 8;
3689 }
3690 }
3691
3692 /* Validate whether all SHF_IA_64_SHORT sections are within
3693 range of the chosen GP. */
3694
3695 if (max_short_vma != 0)
3696 {
3697 if (max_short_vma - min_short_vma >= 0x400000)
3698 {
3699 overflow:
3700 _bfd_error_handler
3701 /* xgettext:c-format */
3702 (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"),
3703 abfd, (uint64_t) (max_short_vma - min_short_vma));
3704 return FALSE;
3705 }
3706 else if ((gp_val > min_short_vma
3707 && gp_val - min_short_vma > 0x200000)
3708 || (gp_val < max_short_vma
3709 && max_short_vma - gp_val >= 0x200000))
3710 {
3711 _bfd_error_handler
3712 (_("%pB: __gp does not cover short data segment"), abfd);
3713 return FALSE;
3714 }
3715 }
3716
3717 _bfd_set_gp_value (abfd, gp_val);
3718
3719 return TRUE;
3720 }
3721
3722 static bfd_boolean
3723 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3724 {
3725 struct elfNN_ia64_link_hash_table *ia64_info;
3726 asection *unwind_output_sec;
3727
3728 ia64_info = elfNN_ia64_hash_table (info);
3729 if (ia64_info == NULL)
3730 return FALSE;
3731
3732 /* Make sure we've got ourselves a nice fat __gp value. */
3733 if (!bfd_link_relocatable (info))
3734 {
3735 bfd_vma gp_val;
3736 struct elf_link_hash_entry *gp;
3737
3738 /* We assume after gp is set, section size will only decrease. We
3739 need to adjust gp for it. */
3740 _bfd_set_gp_value (abfd, 0);
3741 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3742 return FALSE;
3743 gp_val = _bfd_get_gp_value (abfd);
3744
3745 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3746 FALSE, FALSE);
3747 if (gp)
3748 {
3749 gp->root.type = bfd_link_hash_defined;
3750 gp->root.u.def.value = gp_val;
3751 gp->root.u.def.section = bfd_abs_section_ptr;
3752 }
3753 }
3754
3755 /* If we're producing a final executable, we need to sort the contents
3756 of the .IA_64.unwind section. Force this section to be relocated
3757 into memory rather than written immediately to the output file. */
3758 unwind_output_sec = NULL;
3759 if (!bfd_link_relocatable (info))
3760 {
3761 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3762 if (s)
3763 {
3764 unwind_output_sec = s->output_section;
3765 unwind_output_sec->contents
3766 = bfd_malloc (unwind_output_sec->size);
3767 if (unwind_output_sec->contents == NULL)
3768 return FALSE;
3769 }
3770 }
3771
3772 /* Invoke the regular ELF backend linker to do all the work. */
3773 if (!bfd_elf_final_link (abfd, info))
3774 return FALSE;
3775
3776 if (unwind_output_sec)
3777 {
3778 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3779 qsort (unwind_output_sec->contents,
3780 (size_t) (unwind_output_sec->size / 24),
3781 24,
3782 elfNN_ia64_unwind_entry_compare);
3783
3784 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3785 unwind_output_sec->contents, (bfd_vma) 0,
3786 unwind_output_sec->size))
3787 return FALSE;
3788 }
3789
3790 return TRUE;
3791 }
3792
3793 static bfd_boolean
3794 elfNN_ia64_relocate_section (bfd *output_bfd,
3795 struct bfd_link_info *info,
3796 bfd *input_bfd,
3797 asection *input_section,
3798 bfd_byte *contents,
3799 Elf_Internal_Rela *relocs,
3800 Elf_Internal_Sym *local_syms,
3801 asection **local_sections)
3802 {
3803 struct elfNN_ia64_link_hash_table *ia64_info;
3804 Elf_Internal_Shdr *symtab_hdr;
3805 Elf_Internal_Rela *rel;
3806 Elf_Internal_Rela *relend;
3807 asection *srel;
3808 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3809 bfd_vma gp_val;
3810
3811 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3812 ia64_info = elfNN_ia64_hash_table (info);
3813 if (ia64_info == NULL)
3814 return FALSE;
3815
3816 /* Infect various flags from the input section to the output section. */
3817 if (bfd_link_relocatable (info))
3818 {
3819 bfd_vma flags;
3820
3821 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3822 flags &= SHF_IA_64_NORECOV;
3823
3824 elf_section_data(input_section->output_section)
3825 ->this_hdr.sh_flags |= flags;
3826 }
3827
3828 gp_val = _bfd_get_gp_value (output_bfd);
3829 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3830
3831 rel = relocs;
3832 relend = relocs + input_section->reloc_count;
3833 for (; rel < relend; ++rel)
3834 {
3835 struct elf_link_hash_entry *h;
3836 struct elfNN_ia64_dyn_sym_info *dyn_i;
3837 bfd_reloc_status_type r;
3838 reloc_howto_type *howto;
3839 unsigned long r_symndx;
3840 Elf_Internal_Sym *sym;
3841 unsigned int r_type;
3842 bfd_vma value;
3843 asection *sym_sec;
3844 bfd_byte *hit_addr;
3845 bfd_boolean dynamic_symbol_p;
3846 bfd_boolean undef_weak_ref;
3847
3848 r_type = ELFNN_R_TYPE (rel->r_info);
3849 if (r_type > R_IA64_MAX_RELOC_CODE)
3850 {
3851 /* xgettext:c-format */
3852 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3853 input_bfd, (int) r_type);
3854 bfd_set_error (bfd_error_bad_value);
3855 ret_val = FALSE;
3856 continue;
3857 }
3858
3859 howto = ia64_elf_lookup_howto (r_type);
3860 if (howto == NULL)
3861 {
3862 ret_val = FALSE;
3863 continue;
3864 }
3865
3866 r_symndx = ELFNN_R_SYM (rel->r_info);
3867 h = NULL;
3868 sym = NULL;
3869 sym_sec = NULL;
3870 undef_weak_ref = FALSE;
3871
3872 if (r_symndx < symtab_hdr->sh_info)
3873 {
3874 /* Reloc against local symbol. */
3875 asection *msec;
3876 sym = local_syms + r_symndx;
3877 sym_sec = local_sections[r_symndx];
3878 msec = sym_sec;
3879 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3880 if (!bfd_link_relocatable (info)
3881 && (sym_sec->flags & SEC_MERGE) != 0
3882 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3883 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3884 {
3885 struct elfNN_ia64_local_hash_entry *loc_h;
3886
3887 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3888 if (loc_h && ! loc_h->sec_merge_done)
3889 {
3890 struct elfNN_ia64_dyn_sym_info *dynent;
3891 unsigned int count;
3892
3893 for (count = loc_h->count, dynent = loc_h->info;
3894 count != 0;
3895 count--, dynent++)
3896 {
3897 msec = sym_sec;
3898 dynent->addend =
3899 _bfd_merged_section_offset (output_bfd, &msec,
3900 elf_section_data (msec)->
3901 sec_info,
3902 sym->st_value
3903 + dynent->addend);
3904 dynent->addend -= sym->st_value;
3905 dynent->addend += msec->output_section->vma
3906 + msec->output_offset
3907 - sym_sec->output_section->vma
3908 - sym_sec->output_offset;
3909 }
3910
3911 /* We may have introduced duplicated entries. We need
3912 to remove them properly. */
3913 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3914 if (count != loc_h->count)
3915 {
3916 loc_h->count = count;
3917 loc_h->sorted_count = count;
3918 }
3919
3920 loc_h->sec_merge_done = 1;
3921 }
3922 }
3923 }
3924 else
3925 {
3926 bfd_boolean unresolved_reloc;
3927 bfd_boolean warned, ignored;
3928 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3929
3930 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3931 r_symndx, symtab_hdr, sym_hashes,
3932 h, sym_sec, value,
3933 unresolved_reloc, warned, ignored);
3934
3935 if (h->root.type == bfd_link_hash_undefweak)
3936 undef_weak_ref = TRUE;
3937 else if (warned || (ignored && bfd_link_executable (info)))
3938 continue;
3939 }
3940
3941 if (sym_sec != NULL && discarded_section (sym_sec))
3942 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3943 rel, 1, relend, howto, 0, contents);
3944
3945 if (bfd_link_relocatable (info))
3946 continue;
3947
3948 hit_addr = contents + rel->r_offset;
3949 value += rel->r_addend;
3950 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3951
3952 switch (r_type)
3953 {
3954 case R_IA64_NONE:
3955 case R_IA64_LDXMOV:
3956 continue;
3957
3958 case R_IA64_IMM14:
3959 case R_IA64_IMM22:
3960 case R_IA64_IMM64:
3961 case R_IA64_DIR32MSB:
3962 case R_IA64_DIR32LSB:
3963 case R_IA64_DIR64MSB:
3964 case R_IA64_DIR64LSB:
3965 /* Install a dynamic relocation for this reloc. */
3966 if ((dynamic_symbol_p || bfd_link_pic (info))
3967 && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3968 && r_symndx != STN_UNDEF
3969 && (input_section->flags & SEC_ALLOC) != 0)
3970 {
3971 unsigned int dyn_r_type;
3972 long dynindx;
3973 bfd_vma addend;
3974
3975 BFD_ASSERT (srel != NULL);
3976
3977 switch (r_type)
3978 {
3979 case R_IA64_IMM14:
3980 case R_IA64_IMM22:
3981 case R_IA64_IMM64:
3982 /* ??? People shouldn't be doing non-pic code in
3983 shared libraries nor dynamic executables. */
3984 _bfd_error_handler
3985 /* xgettext:c-format */
3986 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
3987 input_bfd,
3988 h ? h->root.root.string
3989 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3990 sym_sec));
3991 ret_val = FALSE;
3992 continue;
3993
3994 default:
3995 break;
3996 }
3997
3998 /* If we don't need dynamic symbol lookup, find a
3999 matching RELATIVE relocation. */
4000 dyn_r_type = r_type;
4001 if (dynamic_symbol_p)
4002 {
4003 dynindx = h->dynindx;
4004 addend = rel->r_addend;
4005 value = 0;
4006 }
4007 else
4008 {
4009 switch (r_type)
4010 {
4011 case R_IA64_DIR32MSB:
4012 dyn_r_type = R_IA64_REL32MSB;
4013 break;
4014 case R_IA64_DIR32LSB:
4015 dyn_r_type = R_IA64_REL32LSB;
4016 break;
4017 case R_IA64_DIR64MSB:
4018 dyn_r_type = R_IA64_REL64MSB;
4019 break;
4020 case R_IA64_DIR64LSB:
4021 dyn_r_type = R_IA64_REL64LSB;
4022 break;
4023
4024 default:
4025 break;
4026 }
4027 dynindx = 0;
4028 addend = value;
4029 }
4030
4031 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4032 srel, rel->r_offset, dyn_r_type,
4033 dynindx, addend);
4034 }
4035 /* Fall through. */
4036
4037 case R_IA64_LTV32MSB:
4038 case R_IA64_LTV32LSB:
4039 case R_IA64_LTV64MSB:
4040 case R_IA64_LTV64LSB:
4041 r = ia64_elf_install_value (hit_addr, value, r_type);
4042 break;
4043
4044 case R_IA64_GPREL22:
4045 case R_IA64_GPREL64I:
4046 case R_IA64_GPREL32MSB:
4047 case R_IA64_GPREL32LSB:
4048 case R_IA64_GPREL64MSB:
4049 case R_IA64_GPREL64LSB:
4050 if (dynamic_symbol_p)
4051 {
4052 _bfd_error_handler
4053 /* xgettext:c-format */
4054 (_("%pB: @gprel relocation against dynamic symbol %s"),
4055 input_bfd,
4056 h ? h->root.root.string
4057 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4058 sym_sec));
4059 ret_val = FALSE;
4060 continue;
4061 }
4062 value -= gp_val;
4063 r = ia64_elf_install_value (hit_addr, value, r_type);
4064 break;
4065
4066 case R_IA64_LTOFF22:
4067 case R_IA64_LTOFF22X:
4068 case R_IA64_LTOFF64I:
4069 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4070 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4071 rel->r_addend, value, R_IA64_DIRNNLSB);
4072 value -= gp_val;
4073 r = ia64_elf_install_value (hit_addr, value, r_type);
4074 break;
4075
4076 case R_IA64_PLTOFF22:
4077 case R_IA64_PLTOFF64I:
4078 case R_IA64_PLTOFF64MSB:
4079 case R_IA64_PLTOFF64LSB:
4080 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4081 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4082 value -= gp_val;
4083 r = ia64_elf_install_value (hit_addr, value, r_type);
4084 break;
4085
4086 case R_IA64_FPTR64I:
4087 case R_IA64_FPTR32MSB:
4088 case R_IA64_FPTR32LSB:
4089 case R_IA64_FPTR64MSB:
4090 case R_IA64_FPTR64LSB:
4091 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4092 if (dyn_i->want_fptr)
4093 {
4094 if (!undef_weak_ref)
4095 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4096 }
4097 if (!dyn_i->want_fptr || bfd_link_pie (info))
4098 {
4099 long dynindx;
4100 unsigned int dyn_r_type = r_type;
4101 bfd_vma addend = rel->r_addend;
4102
4103 /* Otherwise, we expect the dynamic linker to create
4104 the entry. */
4105
4106 if (dyn_i->want_fptr)
4107 {
4108 if (r_type == R_IA64_FPTR64I)
4109 {
4110 /* We can't represent this without a dynamic symbol.
4111 Adjust the relocation to be against an output
4112 section symbol, which are always present in the
4113 dynamic symbol table. */
4114 /* ??? People shouldn't be doing non-pic code in
4115 shared libraries. Hork. */
4116 _bfd_error_handler
4117 (_("%pB: linking non-pic code in a position independent executable"),
4118 input_bfd);
4119 ret_val = FALSE;
4120 continue;
4121 }
4122 dynindx = 0;
4123 addend = value;
4124 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4125 }
4126 else if (h)
4127 {
4128 if (h->dynindx != -1)
4129 dynindx = h->dynindx;
4130 else
4131 dynindx = (_bfd_elf_link_lookup_local_dynindx
4132 (info, h->root.u.def.section->owner,
4133 global_sym_index (h)));
4134 value = 0;
4135 }
4136 else
4137 {
4138 dynindx = (_bfd_elf_link_lookup_local_dynindx
4139 (info, input_bfd, (long) r_symndx));
4140 value = 0;
4141 }
4142
4143 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4144 srel, rel->r_offset, dyn_r_type,
4145 dynindx, addend);
4146 }
4147
4148 r = ia64_elf_install_value (hit_addr, value, r_type);
4149 break;
4150
4151 case R_IA64_LTOFF_FPTR22:
4152 case R_IA64_LTOFF_FPTR64I:
4153 case R_IA64_LTOFF_FPTR32MSB:
4154 case R_IA64_LTOFF_FPTR32LSB:
4155 case R_IA64_LTOFF_FPTR64MSB:
4156 case R_IA64_LTOFF_FPTR64LSB:
4157 {
4158 long dynindx;
4159
4160 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4161 if (dyn_i->want_fptr)
4162 {
4163 BFD_ASSERT (h == NULL || h->dynindx == -1);
4164 if (!undef_weak_ref)
4165 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4166 dynindx = -1;
4167 }
4168 else
4169 {
4170 /* Otherwise, we expect the dynamic linker to create
4171 the entry. */
4172 if (h)
4173 {
4174 if (h->dynindx != -1)
4175 dynindx = h->dynindx;
4176 else
4177 dynindx = (_bfd_elf_link_lookup_local_dynindx
4178 (info, h->root.u.def.section->owner,
4179 global_sym_index (h)));
4180 }
4181 else
4182 dynindx = (_bfd_elf_link_lookup_local_dynindx
4183 (info, input_bfd, (long) r_symndx));
4184 value = 0;
4185 }
4186
4187 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4188 rel->r_addend, value, R_IA64_FPTRNNLSB);
4189 value -= gp_val;
4190 r = ia64_elf_install_value (hit_addr, value, r_type);
4191 }
4192 break;
4193
4194 case R_IA64_PCREL32MSB:
4195 case R_IA64_PCREL32LSB:
4196 case R_IA64_PCREL64MSB:
4197 case R_IA64_PCREL64LSB:
4198 /* Install a dynamic relocation for this reloc. */
4199 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4200 {
4201 BFD_ASSERT (srel != NULL);
4202
4203 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4204 srel, rel->r_offset, r_type,
4205 h->dynindx, rel->r_addend);
4206 }
4207 goto finish_pcrel;
4208
4209 case R_IA64_PCREL21B:
4210 case R_IA64_PCREL60B:
4211 /* We should have created a PLT entry for any dynamic symbol. */
4212 dyn_i = NULL;
4213 if (h)
4214 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4215
4216 if (dyn_i && dyn_i->want_plt2)
4217 {
4218 /* Should have caught this earlier. */
4219 BFD_ASSERT (rel->r_addend == 0);
4220
4221 value = (ia64_info->root.splt->output_section->vma
4222 + ia64_info->root.splt->output_offset
4223 + dyn_i->plt2_offset);
4224 }
4225 else
4226 {
4227 /* Since there's no PLT entry, Validate that this is
4228 locally defined. */
4229 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4230
4231 /* If the symbol is undef_weak, we shouldn't be trying
4232 to call it. There's every chance that we'd wind up
4233 with an out-of-range fixup here. Don't bother setting
4234 any value at all. */
4235 if (undef_weak_ref)
4236 continue;
4237 }
4238 goto finish_pcrel;
4239
4240 case R_IA64_PCREL21BI:
4241 case R_IA64_PCREL21F:
4242 case R_IA64_PCREL21M:
4243 case R_IA64_PCREL22:
4244 case R_IA64_PCREL64I:
4245 /* The PCREL21BI reloc is specifically not intended for use with
4246 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4247 fixup code, and thus probably ought not be dynamic. The
4248 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4249 if (dynamic_symbol_p)
4250 {
4251 const char *msg;
4252
4253 if (r_type == R_IA64_PCREL21BI)
4254 /* xgettext:c-format */
4255 msg = _("%pB: @internal branch to dynamic symbol %s");
4256 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4257 /* xgettext:c-format */
4258 msg = _("%pB: speculation fixup to dynamic symbol %s");
4259 else
4260 /* xgettext:c-format */
4261 msg = _("%pB: @pcrel relocation against dynamic symbol %s");
4262 _bfd_error_handler (msg, input_bfd,
4263 h ? h->root.root.string
4264 : bfd_elf_sym_name (input_bfd,
4265 symtab_hdr,
4266 sym,
4267 sym_sec));
4268 ret_val = FALSE;
4269 continue;
4270 }
4271 goto finish_pcrel;
4272
4273 finish_pcrel:
4274 /* Make pc-relative. */
4275 value -= (input_section->output_section->vma
4276 + input_section->output_offset
4277 + rel->r_offset) & ~ (bfd_vma) 0x3;
4278 r = ia64_elf_install_value (hit_addr, value, r_type);
4279 break;
4280
4281 case R_IA64_SEGREL32MSB:
4282 case R_IA64_SEGREL32LSB:
4283 case R_IA64_SEGREL64MSB:
4284 case R_IA64_SEGREL64LSB:
4285 {
4286 /* Find the segment that contains the output_section. */
4287 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4288 (output_bfd, input_section->output_section);
4289
4290 if (p == NULL)
4291 {
4292 r = bfd_reloc_notsupported;
4293 }
4294 else
4295 {
4296 /* The VMA of the segment is the vaddr of the associated
4297 program header. */
4298 if (value > p->p_vaddr)
4299 value -= p->p_vaddr;
4300 else
4301 value = 0;
4302 r = ia64_elf_install_value (hit_addr, value, r_type);
4303 }
4304 break;
4305 }
4306
4307 case R_IA64_SECREL32MSB:
4308 case R_IA64_SECREL32LSB:
4309 case R_IA64_SECREL64MSB:
4310 case R_IA64_SECREL64LSB:
4311 /* Make output-section relative to section where the symbol
4312 is defined. PR 475 */
4313 if (sym_sec)
4314 value -= sym_sec->output_section->vma;
4315 r = ia64_elf_install_value (hit_addr, value, r_type);
4316 break;
4317
4318 case R_IA64_IPLTMSB:
4319 case R_IA64_IPLTLSB:
4320 /* Install a dynamic relocation for this reloc. */
4321 if ((dynamic_symbol_p || bfd_link_pic (info))
4322 && (input_section->flags & SEC_ALLOC) != 0)
4323 {
4324 BFD_ASSERT (srel != NULL);
4325
4326 /* If we don't need dynamic symbol lookup, install two
4327 RELATIVE relocations. */
4328 if (!dynamic_symbol_p)
4329 {
4330 unsigned int dyn_r_type;
4331
4332 if (r_type == R_IA64_IPLTMSB)
4333 dyn_r_type = R_IA64_REL64MSB;
4334 else
4335 dyn_r_type = R_IA64_REL64LSB;
4336
4337 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4338 input_section,
4339 srel, rel->r_offset,
4340 dyn_r_type, 0, value);
4341 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4342 input_section,
4343 srel, rel->r_offset + 8,
4344 dyn_r_type, 0, gp_val);
4345 }
4346 else
4347 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4348 srel, rel->r_offset, r_type,
4349 h->dynindx, rel->r_addend);
4350 }
4351
4352 if (r_type == R_IA64_IPLTMSB)
4353 r_type = R_IA64_DIR64MSB;
4354 else
4355 r_type = R_IA64_DIR64LSB;
4356 ia64_elf_install_value (hit_addr, value, r_type);
4357 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4358 break;
4359
4360 case R_IA64_TPREL14:
4361 case R_IA64_TPREL22:
4362 case R_IA64_TPREL64I:
4363 if (elf_hash_table (info)->tls_sec == NULL)
4364 goto missing_tls_sec;
4365 value -= elfNN_ia64_tprel_base (info);
4366 r = ia64_elf_install_value (hit_addr, value, r_type);
4367 break;
4368
4369 case R_IA64_DTPREL14:
4370 case R_IA64_DTPREL22:
4371 case R_IA64_DTPREL64I:
4372 case R_IA64_DTPREL32LSB:
4373 case R_IA64_DTPREL32MSB:
4374 case R_IA64_DTPREL64LSB:
4375 case R_IA64_DTPREL64MSB:
4376 if (elf_hash_table (info)->tls_sec == NULL)
4377 goto missing_tls_sec;
4378 value -= elfNN_ia64_dtprel_base (info);
4379 r = ia64_elf_install_value (hit_addr, value, r_type);
4380 break;
4381
4382 case R_IA64_LTOFF_TPREL22:
4383 case R_IA64_LTOFF_DTPMOD22:
4384 case R_IA64_LTOFF_DTPREL22:
4385 {
4386 int got_r_type;
4387 long dynindx = h ? h->dynindx : -1;
4388 bfd_vma r_addend = rel->r_addend;
4389
4390 switch (r_type)
4391 {
4392 default:
4393 case R_IA64_LTOFF_TPREL22:
4394 if (!dynamic_symbol_p)
4395 {
4396 if (elf_hash_table (info)->tls_sec == NULL)
4397 goto missing_tls_sec;
4398 if (!bfd_link_pic (info))
4399 value -= elfNN_ia64_tprel_base (info);
4400 else
4401 {
4402 r_addend += value - elfNN_ia64_dtprel_base (info);
4403 dynindx = 0;
4404 }
4405 }
4406 got_r_type = R_IA64_TPREL64LSB;
4407 break;
4408 case R_IA64_LTOFF_DTPMOD22:
4409 if (!dynamic_symbol_p && !bfd_link_pic (info))
4410 value = 1;
4411 got_r_type = R_IA64_DTPMOD64LSB;
4412 break;
4413 case R_IA64_LTOFF_DTPREL22:
4414 if (!dynamic_symbol_p)
4415 {
4416 if (elf_hash_table (info)->tls_sec == NULL)
4417 goto missing_tls_sec;
4418 value -= elfNN_ia64_dtprel_base (info);
4419 }
4420 got_r_type = R_IA64_DTPRELNNLSB;
4421 break;
4422 }
4423 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4424 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4425 value, got_r_type);
4426 value -= gp_val;
4427 r = ia64_elf_install_value (hit_addr, value, r_type);
4428 }
4429 break;
4430
4431 default:
4432 r = bfd_reloc_notsupported;
4433 break;
4434 }
4435
4436 switch (r)
4437 {
4438 case bfd_reloc_ok:
4439 break;
4440
4441 case bfd_reloc_undefined:
4442 /* This can happen for global table relative relocs if
4443 __gp is undefined. This is a panic situation so we
4444 don't try to continue. */
4445 (*info->callbacks->undefined_symbol)
4446 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4447 return FALSE;
4448
4449 case bfd_reloc_notsupported:
4450 {
4451 const char *name;
4452
4453 if (h)
4454 name = h->root.root.string;
4455 else
4456 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4457 sym_sec);
4458 (*info->callbacks->warning) (info, _("unsupported reloc"),
4459 name, input_bfd,
4460 input_section, rel->r_offset);
4461 ret_val = FALSE;
4462 }
4463 break;
4464
4465 case bfd_reloc_dangerous:
4466 case bfd_reloc_outofrange:
4467 case bfd_reloc_overflow:
4468 default:
4469 missing_tls_sec:
4470 {
4471 const char *name;
4472
4473 if (h)
4474 name = h->root.root.string;
4475 else
4476 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4477 sym_sec);
4478
4479 switch (r_type)
4480 {
4481 case R_IA64_TPREL14:
4482 case R_IA64_TPREL22:
4483 case R_IA64_TPREL64I:
4484 case R_IA64_DTPREL14:
4485 case R_IA64_DTPREL22:
4486 case R_IA64_DTPREL64I:
4487 case R_IA64_DTPREL32LSB:
4488 case R_IA64_DTPREL32MSB:
4489 case R_IA64_DTPREL64LSB:
4490 case R_IA64_DTPREL64MSB:
4491 case R_IA64_LTOFF_TPREL22:
4492 case R_IA64_LTOFF_DTPMOD22:
4493 case R_IA64_LTOFF_DTPREL22:
4494 _bfd_error_handler
4495 /* xgettext:c-format */
4496 (_("%pB: missing TLS section for relocation %s against `%s'"
4497 " at %#" PRIx64 " in section `%pA'."),
4498 input_bfd, howto->name, name,
4499 (uint64_t) rel->r_offset, input_section);
4500 break;
4501
4502 case R_IA64_PCREL21B:
4503 case R_IA64_PCREL21BI:
4504 case R_IA64_PCREL21M:
4505 case R_IA64_PCREL21F:
4506 if (is_elf_hash_table (info->hash))
4507 {
4508 /* Relaxtion is always performed for ELF output.
4509 Overflow failures for those relocations mean
4510 that the section is too big to relax. */
4511 _bfd_error_handler
4512 /* xgettext:c-format */
4513 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4514 " in section `%pA' with size %#" PRIx64
4515 " (> 0x1000000)."),
4516 input_bfd, howto->name, name, (uint64_t) rel->r_offset,
4517 input_section, (uint64_t) input_section->size);
4518 break;
4519 }
4520 /* Fall through. */
4521 default:
4522 (*info->callbacks->reloc_overflow) (info,
4523 &h->root,
4524 name,
4525 howto->name,
4526 (bfd_vma) 0,
4527 input_bfd,
4528 input_section,
4529 rel->r_offset);
4530 break;
4531 }
4532
4533 ret_val = FALSE;
4534 }
4535 break;
4536 }
4537 }
4538
4539 return ret_val;
4540 }
4541
4542 static bfd_boolean
4543 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4544 struct bfd_link_info *info,
4545 struct elf_link_hash_entry *h,
4546 Elf_Internal_Sym *sym)
4547 {
4548 struct elfNN_ia64_link_hash_table *ia64_info;
4549 struct elfNN_ia64_dyn_sym_info *dyn_i;
4550
4551 ia64_info = elfNN_ia64_hash_table (info);
4552 if (ia64_info == NULL)
4553 return FALSE;
4554
4555 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4556
4557 /* Fill in the PLT data, if required. */
4558 if (dyn_i && dyn_i->want_plt)
4559 {
4560 Elf_Internal_Rela outrel;
4561 bfd_byte *loc;
4562 asection *plt_sec;
4563 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4564
4565 gp_val = _bfd_get_gp_value (output_bfd);
4566
4567 /* Initialize the minimal PLT entry. */
4568
4569 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4570 plt_sec = ia64_info->root.splt;
4571 loc = plt_sec->contents + dyn_i->plt_offset;
4572
4573 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4574 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4575 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4576
4577 plt_addr = (plt_sec->output_section->vma
4578 + plt_sec->output_offset
4579 + dyn_i->plt_offset);
4580 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4581
4582 /* Initialize the FULL PLT entry, if needed. */
4583 if (dyn_i->want_plt2)
4584 {
4585 loc = plt_sec->contents + dyn_i->plt2_offset;
4586
4587 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4588 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4589
4590 /* Mark the symbol as undefined, rather than as defined in the
4591 plt section. Leave the value alone. */
4592 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4593 first place. But perhaps elflink.c did some for us. */
4594 if (!h->def_regular)
4595 sym->st_shndx = SHN_UNDEF;
4596 }
4597
4598 /* Create the dynamic relocation. */
4599 outrel.r_offset = pltoff_addr;
4600 if (bfd_little_endian (output_bfd))
4601 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4602 else
4603 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4604 outrel.r_addend = 0;
4605
4606 /* This is fun. In the .IA_64.pltoff section, we've got entries
4607 that correspond both to real PLT entries, and those that
4608 happened to resolve to local symbols but need to be created
4609 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4610 relocations for the real PLT should come at the end of the
4611 section, so that they can be indexed by plt entry at runtime.
4612
4613 We emitted all of the relocations for the non-PLT @pltoff
4614 entries during relocate_section. So we can consider the
4615 existing sec->reloc_count to be the base of the array of
4616 PLT relocations. */
4617
4618 loc = ia64_info->rel_pltoff_sec->contents;
4619 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4620 * sizeof (ElfNN_External_Rela));
4621 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4622 }
4623
4624 /* Mark some specially defined symbols as absolute. */
4625 if (h == ia64_info->root.hdynamic
4626 || h == ia64_info->root.hgot
4627 || h == ia64_info->root.hplt)
4628 sym->st_shndx = SHN_ABS;
4629
4630 return TRUE;
4631 }
4632
4633 static bfd_boolean
4634 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4635 struct bfd_link_info *info)
4636 {
4637 struct elfNN_ia64_link_hash_table *ia64_info;
4638 bfd *dynobj;
4639
4640 ia64_info = elfNN_ia64_hash_table (info);
4641 if (ia64_info == NULL)
4642 return FALSE;
4643
4644 dynobj = ia64_info->root.dynobj;
4645
4646 if (ia64_info->root.dynamic_sections_created)
4647 {
4648 ElfNN_External_Dyn *dyncon, *dynconend;
4649 asection *sdyn, *sgotplt;
4650 bfd_vma gp_val;
4651
4652 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4653 sgotplt = ia64_info->root.sgotplt;
4654 BFD_ASSERT (sdyn != NULL);
4655 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4656 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4657
4658 gp_val = _bfd_get_gp_value (abfd);
4659
4660 for (; dyncon < dynconend; dyncon++)
4661 {
4662 Elf_Internal_Dyn dyn;
4663
4664 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4665
4666 switch (dyn.d_tag)
4667 {
4668 case DT_PLTGOT:
4669 dyn.d_un.d_ptr = gp_val;
4670 break;
4671
4672 case DT_PLTRELSZ:
4673 dyn.d_un.d_val = (ia64_info->minplt_entries
4674 * sizeof (ElfNN_External_Rela));
4675 break;
4676
4677 case DT_JMPREL:
4678 /* See the comment above in finish_dynamic_symbol. */
4679 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4680 + ia64_info->rel_pltoff_sec->output_offset
4681 + (ia64_info->rel_pltoff_sec->reloc_count
4682 * sizeof (ElfNN_External_Rela)));
4683 break;
4684
4685 case DT_IA_64_PLT_RESERVE:
4686 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4687 + sgotplt->output_offset);
4688 break;
4689 }
4690
4691 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4692 }
4693
4694 /* Initialize the PLT0 entry. */
4695 if (ia64_info->root.splt)
4696 {
4697 bfd_byte *loc = ia64_info->root.splt->contents;
4698 bfd_vma pltres;
4699
4700 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4701
4702 pltres = (sgotplt->output_section->vma
4703 + sgotplt->output_offset
4704 - gp_val);
4705
4706 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4707 }
4708 }
4709
4710 return TRUE;
4711 }
4712 \f
4713 /* ELF file flag handling: */
4714
4715 /* Function to keep IA-64 specific file flags. */
4716 static bfd_boolean
4717 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4718 {
4719 BFD_ASSERT (!elf_flags_init (abfd)
4720 || elf_elfheader (abfd)->e_flags == flags);
4721
4722 elf_elfheader (abfd)->e_flags = flags;
4723 elf_flags_init (abfd) = TRUE;
4724 return TRUE;
4725 }
4726
4727 /* Merge backend specific data from an object file to the output
4728 object file when linking. */
4729
4730 static bfd_boolean
4731 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4732 {
4733 bfd *obfd = info->output_bfd;
4734 flagword out_flags;
4735 flagword in_flags;
4736 bfd_boolean ok = TRUE;
4737
4738 /* FIXME: What should be checked when linking shared libraries? */
4739 if ((ibfd->flags & DYNAMIC) != 0)
4740 return TRUE;
4741
4742 if (!is_ia64_elf (ibfd) || !is_ia64_elf (obfd))
4743 return TRUE;
4744
4745 in_flags = elf_elfheader (ibfd)->e_flags;
4746 out_flags = elf_elfheader (obfd)->e_flags;
4747
4748 if (! elf_flags_init (obfd))
4749 {
4750 elf_flags_init (obfd) = TRUE;
4751 elf_elfheader (obfd)->e_flags = in_flags;
4752
4753 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4754 && bfd_get_arch_info (obfd)->the_default)
4755 {
4756 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4757 bfd_get_mach (ibfd));
4758 }
4759
4760 return TRUE;
4761 }
4762
4763 /* Check flag compatibility. */
4764 if (in_flags == out_flags)
4765 return TRUE;
4766
4767 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4768 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4769 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4770
4771 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4772 {
4773 _bfd_error_handler
4774 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
4775 ibfd);
4776
4777 bfd_set_error (bfd_error_bad_value);
4778 ok = FALSE;
4779 }
4780 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4781 {
4782 _bfd_error_handler
4783 (_("%pB: linking big-endian files with little-endian files"),
4784 ibfd);
4785
4786 bfd_set_error (bfd_error_bad_value);
4787 ok = FALSE;
4788 }
4789 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4790 {
4791 _bfd_error_handler
4792 (_("%pB: linking 64-bit files with 32-bit files"),
4793 ibfd);
4794
4795 bfd_set_error (bfd_error_bad_value);
4796 ok = FALSE;
4797 }
4798 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4799 {
4800 _bfd_error_handler
4801 (_("%pB: linking constant-gp files with non-constant-gp files"),
4802 ibfd);
4803
4804 bfd_set_error (bfd_error_bad_value);
4805 ok = FALSE;
4806 }
4807 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4808 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4809 {
4810 _bfd_error_handler
4811 (_("%pB: linking auto-pic files with non-auto-pic files"),
4812 ibfd);
4813
4814 bfd_set_error (bfd_error_bad_value);
4815 ok = FALSE;
4816 }
4817
4818 return ok;
4819 }
4820
4821 static bfd_boolean
4822 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4823 {
4824 FILE *file = (FILE *) ptr;
4825 flagword flags = elf_elfheader (abfd)->e_flags;
4826
4827 BFD_ASSERT (abfd != NULL && ptr != NULL);
4828
4829 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4830 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4831 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4832 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4833 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4834 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4835 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4836 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4837 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4838
4839 _bfd_elf_print_private_bfd_data (abfd, ptr);
4840 return TRUE;
4841 }
4842
4843 static enum elf_reloc_type_class
4844 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4845 const asection *rel_sec ATTRIBUTE_UNUSED,
4846 const Elf_Internal_Rela *rela)
4847 {
4848 switch ((int) ELFNN_R_TYPE (rela->r_info))
4849 {
4850 case R_IA64_REL32MSB:
4851 case R_IA64_REL32LSB:
4852 case R_IA64_REL64MSB:
4853 case R_IA64_REL64LSB:
4854 return reloc_class_relative;
4855 case R_IA64_IPLTMSB:
4856 case R_IA64_IPLTLSB:
4857 return reloc_class_plt;
4858 case R_IA64_COPY:
4859 return reloc_class_copy;
4860 default:
4861 return reloc_class_normal;
4862 }
4863 }
4864
4865 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4866 {
4867 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4868 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4869 { NULL, 0, 0, 0, 0 }
4870 };
4871
4872 static bfd_boolean
4873 elfNN_ia64_object_p (bfd *abfd)
4874 {
4875 asection *sec;
4876 asection *group, *unwi, *unw;
4877 flagword flags;
4878 const char *name;
4879 char *unwi_name, *unw_name;
4880 size_t amt;
4881
4882 if (abfd->flags & DYNAMIC)
4883 return TRUE;
4884
4885 /* Flags for fake group section. */
4886 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4887 | SEC_EXCLUDE);
4888
4889 /* We add a fake section group for each .gnu.linkonce.t.* section,
4890 which isn't in a section group, and its unwind sections. */
4891 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4892 {
4893 if (elf_sec_group (sec) == NULL
4894 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4895 == (SEC_LINK_ONCE | SEC_CODE))
4896 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4897 {
4898 name = sec->name + 16;
4899
4900 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4901 unwi_name = bfd_alloc (abfd, amt);
4902 if (!unwi_name)
4903 return FALSE;
4904
4905 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4906 unwi = bfd_get_section_by_name (abfd, unwi_name);
4907
4908 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4909 unw_name = bfd_alloc (abfd, amt);
4910 if (!unw_name)
4911 return FALSE;
4912
4913 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4914 unw = bfd_get_section_by_name (abfd, unw_name);
4915
4916 /* We need to create a fake group section for it and its
4917 unwind sections. */
4918 group = bfd_make_section_anyway_with_flags (abfd, name,
4919 flags);
4920 if (group == NULL)
4921 return FALSE;
4922
4923 /* Move the fake group section to the beginning. */
4924 bfd_section_list_remove (abfd, group);
4925 bfd_section_list_prepend (abfd, group);
4926
4927 elf_next_in_group (group) = sec;
4928
4929 elf_group_name (sec) = name;
4930 elf_next_in_group (sec) = sec;
4931 elf_sec_group (sec) = group;
4932
4933 if (unwi)
4934 {
4935 elf_group_name (unwi) = name;
4936 elf_next_in_group (unwi) = sec;
4937 elf_next_in_group (sec) = unwi;
4938 elf_sec_group (unwi) = group;
4939 }
4940
4941 if (unw)
4942 {
4943 elf_group_name (unw) = name;
4944 if (unwi)
4945 {
4946 elf_next_in_group (unw) = elf_next_in_group (unwi);
4947 elf_next_in_group (unwi) = unw;
4948 }
4949 else
4950 {
4951 elf_next_in_group (unw) = sec;
4952 elf_next_in_group (sec) = unw;
4953 }
4954 elf_sec_group (unw) = group;
4955 }
4956
4957 /* Fake SHT_GROUP section header. */
4958 elf_section_data (group)->this_hdr.bfd_section = group;
4959 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4960 }
4961 }
4962 return TRUE;
4963 }
4964
4965 static bfd_boolean
4966 elfNN_ia64_hpux_vec (const bfd_target *vec)
4967 {
4968 extern const bfd_target ia64_elfNN_hpux_be_vec;
4969 return (vec == &ia64_elfNN_hpux_be_vec);
4970 }
4971
4972 static bfd_boolean
4973 elfNN_hpux_init_file_header (bfd *abfd, struct bfd_link_info *info)
4974 {
4975 Elf_Internal_Ehdr *i_ehdrp;
4976
4977 if (!_bfd_elf_init_file_header (abfd, info))
4978 return FALSE;
4979
4980 i_ehdrp = elf_elfheader (abfd);
4981 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4982 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4983 return TRUE;
4984 }
4985
4986 static bfd_boolean
4987 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4988 asection *sec, int *retval)
4989 {
4990 if (bfd_is_com_section (sec))
4991 {
4992 *retval = SHN_IA_64_ANSI_COMMON;
4993 return TRUE;
4994 }
4995 return FALSE;
4996 }
4997
4998 static void
4999 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5000 asymbol *asym)
5001 {
5002 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5003
5004 switch (elfsym->internal_elf_sym.st_shndx)
5005 {
5006 case SHN_IA_64_ANSI_COMMON:
5007 asym->section = bfd_com_section_ptr;
5008 asym->value = elfsym->internal_elf_sym.st_size;
5009 asym->flags &= ~BSF_GLOBAL;
5010 break;
5011 }
5012 }
5013
5014 static void
5015 ignore_errors (const char *fmt ATTRIBUTE_UNUSED, ...)
5016 {
5017 }
5018 \f
5019 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
5020 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5021 #define TARGET_BIG_SYM ia64_elfNN_be_vec
5022 #define TARGET_BIG_NAME "elfNN-ia64-big"
5023 #define ELF_ARCH bfd_arch_ia64
5024 #define ELF_TARGET_ID IA64_ELF_DATA
5025 #define ELF_MACHINE_CODE EM_IA_64
5026 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5027 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5028 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5029 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5030
5031 #define elf_backend_section_from_shdr \
5032 elfNN_ia64_section_from_shdr
5033 #define elf_backend_section_flags \
5034 elfNN_ia64_section_flags
5035 #define elf_backend_fake_sections \
5036 elfNN_ia64_fake_sections
5037 #define elf_backend_final_write_processing \
5038 elfNN_ia64_final_write_processing
5039 #define elf_backend_add_symbol_hook \
5040 elfNN_ia64_add_symbol_hook
5041 #define elf_backend_additional_program_headers \
5042 elfNN_ia64_additional_program_headers
5043 #define elf_backend_modify_segment_map \
5044 elfNN_ia64_modify_segment_map
5045 #define elf_backend_modify_headers \
5046 elfNN_ia64_modify_headers
5047 #define elf_info_to_howto \
5048 elfNN_ia64_info_to_howto
5049
5050 #define bfd_elfNN_bfd_reloc_type_lookup \
5051 ia64_elf_reloc_type_lookup
5052 #define bfd_elfNN_bfd_reloc_name_lookup \
5053 ia64_elf_reloc_name_lookup
5054 #define bfd_elfNN_bfd_is_local_label_name \
5055 elfNN_ia64_is_local_label_name
5056 #define bfd_elfNN_bfd_relax_section \
5057 elfNN_ia64_relax_section
5058
5059 #define elf_backend_object_p \
5060 elfNN_ia64_object_p
5061
5062 /* Stuff for the BFD linker: */
5063 #define bfd_elfNN_bfd_link_hash_table_create \
5064 elfNN_ia64_hash_table_create
5065 #define elf_backend_create_dynamic_sections \
5066 elfNN_ia64_create_dynamic_sections
5067 #define elf_backend_check_relocs \
5068 elfNN_ia64_check_relocs
5069 #define elf_backend_adjust_dynamic_symbol \
5070 elfNN_ia64_adjust_dynamic_symbol
5071 #define elf_backend_size_dynamic_sections \
5072 elfNN_ia64_size_dynamic_sections
5073 #define elf_backend_omit_section_dynsym \
5074 _bfd_elf_omit_section_dynsym_all
5075 #define elf_backend_relocate_section \
5076 elfNN_ia64_relocate_section
5077 #define elf_backend_finish_dynamic_symbol \
5078 elfNN_ia64_finish_dynamic_symbol
5079 #define elf_backend_finish_dynamic_sections \
5080 elfNN_ia64_finish_dynamic_sections
5081 #define bfd_elfNN_bfd_final_link \
5082 elfNN_ia64_final_link
5083
5084 #define bfd_elfNN_bfd_merge_private_bfd_data \
5085 elfNN_ia64_merge_private_bfd_data
5086 #define bfd_elfNN_bfd_set_private_flags \
5087 elfNN_ia64_set_private_flags
5088 #define bfd_elfNN_bfd_print_private_bfd_data \
5089 elfNN_ia64_print_private_bfd_data
5090
5091 #define elf_backend_plt_readonly 1
5092 #define elf_backend_can_gc_sections 1
5093 #define elf_backend_want_plt_sym 0
5094 #define elf_backend_plt_alignment 5
5095 #define elf_backend_got_header_size 0
5096 #define elf_backend_want_got_plt 1
5097 #define elf_backend_may_use_rel_p 1
5098 #define elf_backend_may_use_rela_p 1
5099 #define elf_backend_default_use_rela_p 1
5100 #define elf_backend_want_dynbss 0
5101 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5102 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5103 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5104 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5105 #define elf_backend_rela_normal 1
5106 #define elf_backend_dtrel_excludes_plt 1
5107 #define elf_backend_special_sections elfNN_ia64_special_sections
5108 #define elf_backend_default_execstack 0
5109
5110 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5111 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5112 We don't want to flood users with so many error messages. We turn
5113 off the warning for now. It will be turned on later when the Intel
5114 compiler is fixed. */
5115 #define elf_backend_link_order_error_handler ignore_errors
5116
5117 #include "elfNN-target.h"
5118
5119 /* HPUX-specific vectors. */
5120
5121 #undef TARGET_LITTLE_SYM
5122 #undef TARGET_LITTLE_NAME
5123 #undef TARGET_BIG_SYM
5124 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5125 #undef TARGET_BIG_NAME
5126 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5127
5128 /* These are HP-UX specific functions. */
5129
5130 #undef elf_backend_init_file_header
5131 #define elf_backend_init_file_header elfNN_hpux_init_file_header
5132
5133 #undef elf_backend_section_from_bfd_section
5134 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5135
5136 #undef elf_backend_symbol_processing
5137 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5138
5139 #undef elf_backend_want_p_paddr_set_to_zero
5140 #define elf_backend_want_p_paddr_set_to_zero 1
5141
5142 #undef ELF_COMMONPAGESIZE
5143 #undef ELF_OSABI
5144 #define ELF_OSABI ELFOSABI_HPUX
5145
5146 #undef elfNN_bed
5147 #define elfNN_bed elfNN_ia64_hpux_bed
5148
5149 #include "elfNN-target.h"