Rewrite bfd error handler
[deliverable/binutils-gdb.git] / bfd / elfnn-ia64.c
1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2017 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 "bfd_stdint.h"
31 #include "elfxx-ia64.h"
32
33 #define ARCH_SIZE NN
34
35 #if ARCH_SIZE == 64
36 #define LOG_SECTION_ALIGN 3
37 #endif
38
39 #if ARCH_SIZE == 32
40 #define LOG_SECTION_ALIGN 2
41 #endif
42
43 typedef struct bfd_hash_entry *(*new_hash_entry_func)
44 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
45
46 /* In dynamically (linker-) created sections, we generally need to keep track
47 of the place a symbol or expression got allocated to. This is done via hash
48 tables that store entries of the following type. */
49
50 struct elfNN_ia64_dyn_sym_info
51 {
52 /* The addend for which this entry is relevant. */
53 bfd_vma addend;
54
55 bfd_vma got_offset;
56 bfd_vma fptr_offset;
57 bfd_vma pltoff_offset;
58 bfd_vma plt_offset;
59 bfd_vma plt2_offset;
60 bfd_vma tprel_offset;
61 bfd_vma dtpmod_offset;
62 bfd_vma dtprel_offset;
63
64 /* The symbol table entry, if any, that this was derived from. */
65 struct elf_link_hash_entry *h;
66
67 /* Used to count non-got, non-plt relocations for delayed sizing
68 of relocation sections. */
69 struct elfNN_ia64_dyn_reloc_entry
70 {
71 struct elfNN_ia64_dyn_reloc_entry *next;
72 asection *srel;
73 int type;
74 int count;
75
76 /* Is this reloc against readonly section? */
77 bfd_boolean reltext;
78 } *reloc_entries;
79
80 /* TRUE when the section contents have been updated. */
81 unsigned got_done : 1;
82 unsigned fptr_done : 1;
83 unsigned pltoff_done : 1;
84 unsigned tprel_done : 1;
85 unsigned dtpmod_done : 1;
86 unsigned dtprel_done : 1;
87
88 /* TRUE for the different kinds of linker data we want created. */
89 unsigned want_got : 1;
90 unsigned want_gotx : 1;
91 unsigned want_fptr : 1;
92 unsigned want_ltoff_fptr : 1;
93 unsigned want_plt : 1;
94 unsigned want_plt2 : 1;
95 unsigned want_pltoff : 1;
96 unsigned want_tprel : 1;
97 unsigned want_dtpmod : 1;
98 unsigned want_dtprel : 1;
99 };
100
101 struct elfNN_ia64_local_hash_entry
102 {
103 int id;
104 unsigned int r_sym;
105 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
106 unsigned int count;
107 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
108 unsigned int sorted_count;
109 /* The size of elfNN_ia64_dyn_sym_info array. */
110 unsigned int size;
111 /* The array of elfNN_ia64_dyn_sym_info. */
112 struct elfNN_ia64_dyn_sym_info *info;
113
114 /* TRUE if this hash entry's addends was translated for
115 SHF_MERGE optimization. */
116 unsigned sec_merge_done : 1;
117 };
118
119 struct elfNN_ia64_link_hash_entry
120 {
121 struct elf_link_hash_entry root;
122 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
123 unsigned int count;
124 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
125 unsigned int sorted_count;
126 /* The size of elfNN_ia64_dyn_sym_info array. */
127 unsigned int size;
128 /* The array of elfNN_ia64_dyn_sym_info. */
129 struct elfNN_ia64_dyn_sym_info *info;
130 };
131
132 struct elfNN_ia64_link_hash_table
133 {
134 /* The main hash table. */
135 struct elf_link_hash_table root;
136
137 asection *fptr_sec; /* Function descriptor table (or NULL). */
138 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
139 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
140 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
141
142 bfd_size_type minplt_entries; /* Number of minplt entries. */
143 unsigned reltext : 1; /* Are there relocs against readonly sections? */
144 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
145 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
146 /* There are maybe R_IA64_GPREL22 relocations, including those
147 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
148 sections. We need to record those sections so that we can choose
149 a proper GP to cover all R_IA64_GPREL22 relocations. */
150 asection *max_short_sec; /* Maximum short output section. */
151 bfd_vma max_short_offset; /* Maximum short offset. */
152 asection *min_short_sec; /* Minimum short output section. */
153 bfd_vma min_short_offset; /* Minimum short offset. */
154
155 htab_t loc_hash_table;
156 void *loc_hash_memory;
157 };
158
159 struct elfNN_ia64_allocate_data
160 {
161 struct bfd_link_info *info;
162 bfd_size_type ofs;
163 bfd_boolean only_got;
164 };
165
166 #define elfNN_ia64_hash_table(p) \
167 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
168 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
169
170 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
171 (struct elfNN_ia64_link_hash_table *ia64_info,
172 struct elf_link_hash_entry *h,
173 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
174 static bfd_boolean elfNN_ia64_dynamic_symbol_p
175 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
176 static bfd_boolean elfNN_ia64_choose_gp
177 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
178 static void elfNN_ia64_dyn_sym_traverse
179 (struct elfNN_ia64_link_hash_table *ia64_info,
180 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
181 void * info);
182 static bfd_boolean allocate_global_data_got
183 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
184 static bfd_boolean allocate_global_fptr_got
185 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
186 static bfd_boolean allocate_local_got
187 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
188 static bfd_boolean elfNN_ia64_hpux_vec
189 (const bfd_target *vec);
190 static bfd_boolean allocate_dynrel_entries
191 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
192 static asection *get_pltoff
193 (bfd *abfd, struct bfd_link_info *info,
194 struct elfNN_ia64_link_hash_table *ia64_info);
195 \f
196 /* ia64-specific relocation. */
197
198 /* Given a ELF reloc, return the matching HOWTO structure. */
199
200 static void
201 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
202 arelent *bfd_reloc,
203 Elf_Internal_Rela *elf_reloc)
204 {
205 bfd_reloc->howto
206 = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
207 }
208 \f
209 #define PLT_HEADER_SIZE (3 * 16)
210 #define PLT_MIN_ENTRY_SIZE (1 * 16)
211 #define PLT_FULL_ENTRY_SIZE (2 * 16)
212 #define PLT_RESERVED_WORDS 3
213
214 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
215 {
216 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
217 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
218 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
219 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
220 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
221 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
222 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
223 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
224 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
225 };
226
227 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
228 {
229 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
230 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
231 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
232 };
233
234 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
235 {
236 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
237 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
238 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
239 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
240 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
241 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
242 };
243
244 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
245
246 static const bfd_byte oor_brl[16] =
247 {
248 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
250 0x00, 0x00, 0x00, 0xc0
251 };
252
253 static const bfd_byte oor_ip[48] =
254 {
255 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
256 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
257 0x01, 0x00, 0x00, 0x60,
258 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
259 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
260 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
261 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
262 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
263 0x60, 0x00, 0x80, 0x00 /* br b6;; */
264 };
265
266 static size_t oor_branch_size = sizeof (oor_brl);
267
268 void
269 bfd_elfNN_ia64_after_parse (int itanium)
270 {
271 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
272 }
273 \f
274
275 /* Rename some of the generic section flags to better document how they
276 are used here. */
277 #define skip_relax_pass_0 sec_flg0
278 #define skip_relax_pass_1 sec_flg1
279
280 /* These functions do relaxation for IA-64 ELF. */
281
282 static void
283 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
284 struct elfNN_ia64_link_hash_table *ia64_info)
285 {
286 /* Skip ABS and SHF_IA_64_SHORT sections. */
287 if (sec == bfd_abs_section_ptr
288 || (sec->flags & SEC_SMALL_DATA) != 0)
289 return;
290
291 if (!ia64_info->min_short_sec)
292 {
293 ia64_info->max_short_sec = sec;
294 ia64_info->max_short_offset = offset;
295 ia64_info->min_short_sec = sec;
296 ia64_info->min_short_offset = offset;
297 }
298 else if (sec == ia64_info->max_short_sec
299 && offset > ia64_info->max_short_offset)
300 ia64_info->max_short_offset = offset;
301 else if (sec == ia64_info->min_short_sec
302 && offset < ia64_info->min_short_offset)
303 ia64_info->min_short_offset = offset;
304 else if (sec->output_section->vma
305 > ia64_info->max_short_sec->vma)
306 {
307 ia64_info->max_short_sec = sec;
308 ia64_info->max_short_offset = offset;
309 }
310 else if (sec->output_section->vma
311 < ia64_info->min_short_sec->vma)
312 {
313 ia64_info->min_short_sec = sec;
314 ia64_info->min_short_offset = offset;
315 }
316 }
317
318 static bfd_boolean
319 elfNN_ia64_relax_section (bfd *abfd, asection *sec,
320 struct bfd_link_info *link_info,
321 bfd_boolean *again)
322 {
323 struct one_fixup
324 {
325 struct one_fixup *next;
326 asection *tsec;
327 bfd_vma toff;
328 bfd_vma trampoff;
329 };
330
331 Elf_Internal_Shdr *symtab_hdr;
332 Elf_Internal_Rela *internal_relocs;
333 Elf_Internal_Rela *irel, *irelend;
334 bfd_byte *contents;
335 Elf_Internal_Sym *isymbuf = NULL;
336 struct elfNN_ia64_link_hash_table *ia64_info;
337 struct one_fixup *fixups = NULL;
338 bfd_boolean changed_contents = FALSE;
339 bfd_boolean changed_relocs = FALSE;
340 bfd_boolean changed_got = FALSE;
341 bfd_boolean skip_relax_pass_0 = TRUE;
342 bfd_boolean skip_relax_pass_1 = TRUE;
343 bfd_vma gp = 0;
344
345 /* Assume we're not going to change any sizes, and we'll only need
346 one pass. */
347 *again = FALSE;
348
349 if (bfd_link_relocatable (link_info))
350 (*link_info->callbacks->einfo)
351 (_("%P%F: --relax and -r may not be used together\n"));
352
353 /* Don't even try to relax for non-ELF outputs. */
354 if (!is_elf_hash_table (link_info->hash))
355 return FALSE;
356
357 /* Nothing to do if there are no relocations or there is no need for
358 the current pass. */
359 if ((sec->flags & SEC_RELOC) == 0
360 || sec->reloc_count == 0
361 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
362 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
363 return TRUE;
364
365 ia64_info = elfNN_ia64_hash_table (link_info);
366 if (ia64_info == NULL)
367 return FALSE;
368
369 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
370
371 /* Load the relocations for this section. */
372 internal_relocs = (_bfd_elf_link_read_relocs
373 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
374 link_info->keep_memory));
375 if (internal_relocs == NULL)
376 return FALSE;
377
378 irelend = internal_relocs + sec->reloc_count;
379
380 /* Get the section contents. */
381 if (elf_section_data (sec)->this_hdr.contents != NULL)
382 contents = elf_section_data (sec)->this_hdr.contents;
383 else
384 {
385 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
386 goto error_return;
387 }
388
389 for (irel = internal_relocs; irel < irelend; irel++)
390 {
391 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
392 bfd_vma symaddr, reladdr, trampoff, toff, roff;
393 asection *tsec;
394 struct one_fixup *f;
395 bfd_size_type amt;
396 bfd_boolean is_branch;
397 struct elfNN_ia64_dyn_sym_info *dyn_i;
398 char symtype;
399
400 switch (r_type)
401 {
402 case R_IA64_PCREL21B:
403 case R_IA64_PCREL21BI:
404 case R_IA64_PCREL21M:
405 case R_IA64_PCREL21F:
406 /* In pass 1, all br relaxations are done. We can skip it. */
407 if (link_info->relax_pass == 1)
408 continue;
409 skip_relax_pass_0 = FALSE;
410 is_branch = TRUE;
411 break;
412
413 case R_IA64_PCREL60B:
414 /* We can't optimize brl to br in pass 0 since br relaxations
415 will increase the code size. Defer it to pass 1. */
416 if (link_info->relax_pass == 0)
417 {
418 skip_relax_pass_1 = FALSE;
419 continue;
420 }
421 is_branch = TRUE;
422 break;
423
424 case R_IA64_GPREL22:
425 /* Update max_short_sec/min_short_sec. */
426
427 case R_IA64_LTOFF22X:
428 case R_IA64_LDXMOV:
429 /* We can't relax ldx/mov in pass 0 since br relaxations will
430 increase the code size. Defer it to pass 1. */
431 if (link_info->relax_pass == 0)
432 {
433 skip_relax_pass_1 = FALSE;
434 continue;
435 }
436 is_branch = FALSE;
437 break;
438
439 default:
440 continue;
441 }
442
443 /* Get the value of the symbol referred to by the reloc. */
444 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
445 {
446 /* A local symbol. */
447 Elf_Internal_Sym *isym;
448
449 /* Read this BFD's local symbols. */
450 if (isymbuf == NULL)
451 {
452 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
453 if (isymbuf == NULL)
454 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
455 symtab_hdr->sh_info, 0,
456 NULL, NULL, NULL);
457 if (isymbuf == 0)
458 goto error_return;
459 }
460
461 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
462 if (isym->st_shndx == SHN_UNDEF)
463 continue; /* We can't do anything with undefined symbols. */
464 else if (isym->st_shndx == SHN_ABS)
465 tsec = bfd_abs_section_ptr;
466 else if (isym->st_shndx == SHN_COMMON)
467 tsec = bfd_com_section_ptr;
468 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
469 tsec = bfd_com_section_ptr;
470 else
471 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
472
473 toff = isym->st_value;
474 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
475 symtype = ELF_ST_TYPE (isym->st_info);
476 }
477 else
478 {
479 unsigned long indx;
480 struct elf_link_hash_entry *h;
481
482 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
483 h = elf_sym_hashes (abfd)[indx];
484 BFD_ASSERT (h != NULL);
485
486 while (h->root.type == bfd_link_hash_indirect
487 || h->root.type == bfd_link_hash_warning)
488 h = (struct elf_link_hash_entry *) h->root.u.i.link;
489
490 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
491
492 /* For branches to dynamic symbols, we're interested instead
493 in a branch to the PLT entry. */
494 if (is_branch && dyn_i && dyn_i->want_plt2)
495 {
496 /* Internal branches shouldn't be sent to the PLT.
497 Leave this for now and we'll give an error later. */
498 if (r_type != R_IA64_PCREL21B)
499 continue;
500
501 tsec = ia64_info->root.splt;
502 toff = dyn_i->plt2_offset;
503 BFD_ASSERT (irel->r_addend == 0);
504 }
505
506 /* Can't do anything else with dynamic symbols. */
507 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
508 continue;
509
510 else
511 {
512 /* We can't do anything with undefined symbols. */
513 if (h->root.type == bfd_link_hash_undefined
514 || h->root.type == bfd_link_hash_undefweak)
515 continue;
516
517 tsec = h->root.u.def.section;
518 toff = h->root.u.def.value;
519 }
520
521 symtype = h->type;
522 }
523
524 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
525 {
526 /* At this stage in linking, no SEC_MERGE symbol has been
527 adjusted, so all references to such symbols need to be
528 passed through _bfd_merged_section_offset. (Later, in
529 relocate_section, all SEC_MERGE symbols *except* for
530 section symbols have been adjusted.)
531
532 gas may reduce relocations against symbols in SEC_MERGE
533 sections to a relocation against the section symbol when
534 the original addend was zero. When the reloc is against
535 a section symbol we should include the addend in the
536 offset passed to _bfd_merged_section_offset, since the
537 location of interest is the original symbol. On the
538 other hand, an access to "sym+addend" where "sym" is not
539 a section symbol should not include the addend; Such an
540 access is presumed to be an offset from "sym"; The
541 location of interest is just "sym". */
542 if (symtype == STT_SECTION)
543 toff += irel->r_addend;
544
545 toff = _bfd_merged_section_offset (abfd, &tsec,
546 elf_section_data (tsec)->sec_info,
547 toff);
548
549 if (symtype != STT_SECTION)
550 toff += irel->r_addend;
551 }
552 else
553 toff += irel->r_addend;
554
555 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
556
557 roff = irel->r_offset;
558
559 if (is_branch)
560 {
561 bfd_signed_vma offset;
562
563 reladdr = (sec->output_section->vma
564 + sec->output_offset
565 + roff) & (bfd_vma) -4;
566
567 /* The .plt section is aligned at 32byte and the .text section
568 is aligned at 64byte. The .text section is right after the
569 .plt section. After the first relaxation pass, linker may
570 increase the gap between the .plt and .text sections up
571 to 32byte. We assume linker will always insert 32byte
572 between the .plt and .text sections after the first
573 relaxation pass. */
574 if (tsec == ia64_info->root.splt)
575 offset = -0x1000000 + 32;
576 else
577 offset = -0x1000000;
578
579 /* If the branch is in range, no need to do anything. */
580 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
581 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
582 {
583 /* If the 60-bit branch is in 21-bit range, optimize it. */
584 if (r_type == R_IA64_PCREL60B)
585 {
586 ia64_elf_relax_brl (contents, roff);
587
588 irel->r_info
589 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
590 R_IA64_PCREL21B);
591
592 /* If the original relocation offset points to slot
593 1, change it to slot 2. */
594 if ((irel->r_offset & 3) == 1)
595 irel->r_offset += 1;
596 }
597
598 continue;
599 }
600 else if (r_type == R_IA64_PCREL60B)
601 continue;
602 else if (ia64_elf_relax_br (contents, roff))
603 {
604 irel->r_info
605 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
606 R_IA64_PCREL60B);
607
608 /* Make the relocation offset point to slot 1. */
609 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
610 continue;
611 }
612
613 /* We can't put a trampoline in a .init/.fini section. Issue
614 an error. */
615 if (strcmp (sec->output_section->name, ".init") == 0
616 || strcmp (sec->output_section->name, ".fini") == 0)
617 {
618 _bfd_error_handler
619 /* xgettext:c-format */
620 (_("%B: Can't relax br at 0x%lx in section `%A'."
621 " Please use brl or indirect branch."),
622 sec->owner, (unsigned long) roff, sec);
623 bfd_set_error (bfd_error_bad_value);
624 goto error_return;
625 }
626
627 /* If the branch and target are in the same section, you've
628 got one honking big section and we can't help you unless
629 you are branching backwards. You'll get an error message
630 later. */
631 if (tsec == sec && toff > roff)
632 continue;
633
634 /* Look for an existing fixup to this address. */
635 for (f = fixups; f ; f = f->next)
636 if (f->tsec == tsec && f->toff == toff)
637 break;
638
639 if (f == NULL)
640 {
641 /* Two alternatives: If it's a branch to a PLT entry, we can
642 make a copy of the FULL_PLT entry. Otherwise, we'll have
643 to use a `brl' insn to get where we're going. */
644
645 size_t size;
646
647 if (tsec == ia64_info->root.splt)
648 size = sizeof (plt_full_entry);
649 else
650 size = oor_branch_size;
651
652 /* Resize the current section to make room for the new branch. */
653 trampoff = (sec->size + 15) & (bfd_vma) -16;
654
655 /* If trampoline is out of range, there is nothing we
656 can do. */
657 offset = trampoff - (roff & (bfd_vma) -4);
658 if (offset < -0x1000000 || offset > 0x0FFFFF0)
659 continue;
660
661 amt = trampoff + size;
662 contents = (bfd_byte *) bfd_realloc (contents, amt);
663 if (contents == NULL)
664 goto error_return;
665 sec->size = amt;
666
667 if (tsec == ia64_info->root.splt)
668 {
669 memcpy (contents + trampoff, plt_full_entry, size);
670
671 /* Hijack the old relocation for use as the PLTOFF reloc. */
672 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
673 R_IA64_PLTOFF22);
674 irel->r_offset = trampoff;
675 }
676 else
677 {
678 if (size == sizeof (oor_ip))
679 {
680 memcpy (contents + trampoff, oor_ip, size);
681 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
682 R_IA64_PCREL64I);
683 irel->r_addend -= 16;
684 irel->r_offset = trampoff + 2;
685 }
686 else
687 {
688 memcpy (contents + trampoff, oor_brl, size);
689 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
690 R_IA64_PCREL60B);
691 irel->r_offset = trampoff + 2;
692 }
693
694 }
695
696 /* Record the fixup so we don't do it again this section. */
697 f = (struct one_fixup *)
698 bfd_malloc ((bfd_size_type) sizeof (*f));
699 f->next = fixups;
700 f->tsec = tsec;
701 f->toff = toff;
702 f->trampoff = trampoff;
703 fixups = f;
704 }
705 else
706 {
707 /* If trampoline is out of range, there is nothing we
708 can do. */
709 offset = f->trampoff - (roff & (bfd_vma) -4);
710 if (offset < -0x1000000 || offset > 0x0FFFFF0)
711 continue;
712
713 /* Nop out the reloc, since we're finalizing things here. */
714 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
715 }
716
717 /* Fix up the existing branch to hit the trampoline. */
718 if (ia64_elf_install_value (contents + roff, offset, r_type)
719 != bfd_reloc_ok)
720 goto error_return;
721
722 changed_contents = TRUE;
723 changed_relocs = TRUE;
724 }
725 else
726 {
727 /* Fetch the gp. */
728 if (gp == 0)
729 {
730 bfd *obfd = sec->output_section->owner;
731 gp = _bfd_get_gp_value (obfd);
732 if (gp == 0)
733 {
734 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
735 goto error_return;
736 gp = _bfd_get_gp_value (obfd);
737 }
738 }
739
740 /* If the data is out of range, do nothing. */
741 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
742 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
743 continue;
744
745 if (r_type == R_IA64_GPREL22)
746 elfNN_ia64_update_short_info (tsec->output_section,
747 tsec->output_offset + toff,
748 ia64_info);
749 else if (r_type == R_IA64_LTOFF22X)
750 {
751 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
752 R_IA64_GPREL22);
753 changed_relocs = TRUE;
754 if (dyn_i->want_gotx)
755 {
756 dyn_i->want_gotx = 0;
757 changed_got |= !dyn_i->want_got;
758 }
759
760 elfNN_ia64_update_short_info (tsec->output_section,
761 tsec->output_offset + toff,
762 ia64_info);
763 }
764 else
765 {
766 ia64_elf_relax_ldxmov (contents, roff);
767 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
768 changed_contents = TRUE;
769 changed_relocs = TRUE;
770 }
771 }
772 }
773
774 /* ??? If we created fixups, this may push the code segment large
775 enough that the data segment moves, which will change the GP.
776 Reset the GP so that we re-calculate next round. We need to
777 do this at the _beginning_ of the next round; now will not do. */
778
779 /* Clean up and go home. */
780 while (fixups)
781 {
782 struct one_fixup *f = fixups;
783 fixups = fixups->next;
784 free (f);
785 }
786
787 if (isymbuf != NULL
788 && symtab_hdr->contents != (unsigned char *) isymbuf)
789 {
790 if (! link_info->keep_memory)
791 free (isymbuf);
792 else
793 {
794 /* Cache the symbols for elf_link_input_bfd. */
795 symtab_hdr->contents = (unsigned char *) isymbuf;
796 }
797 }
798
799 if (contents != NULL
800 && elf_section_data (sec)->this_hdr.contents != contents)
801 {
802 if (!changed_contents && !link_info->keep_memory)
803 free (contents);
804 else
805 {
806 /* Cache the section contents for elf_link_input_bfd. */
807 elf_section_data (sec)->this_hdr.contents = contents;
808 }
809 }
810
811 if (elf_section_data (sec)->relocs != internal_relocs)
812 {
813 if (!changed_relocs)
814 free (internal_relocs);
815 else
816 elf_section_data (sec)->relocs = internal_relocs;
817 }
818
819 if (changed_got)
820 {
821 struct elfNN_ia64_allocate_data data;
822 data.info = link_info;
823 data.ofs = 0;
824 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
825
826 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
827 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
828 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
829 ia64_info->root.sgot->size = data.ofs;
830
831 if (ia64_info->root.dynamic_sections_created
832 && ia64_info->root.srelgot != NULL)
833 {
834 /* Resize .rela.got. */
835 ia64_info->root.srelgot->size = 0;
836 if (bfd_link_pic (link_info)
837 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
838 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
839 data.only_got = TRUE;
840 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
841 &data);
842 }
843 }
844
845 if (link_info->relax_pass == 0)
846 {
847 /* Pass 0 is only needed to relax br. */
848 sec->skip_relax_pass_0 = skip_relax_pass_0;
849 sec->skip_relax_pass_1 = skip_relax_pass_1;
850 }
851
852 *again = changed_contents || changed_relocs;
853 return TRUE;
854
855 error_return:
856 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
857 free (isymbuf);
858 if (contents != NULL
859 && elf_section_data (sec)->this_hdr.contents != contents)
860 free (contents);
861 if (internal_relocs != NULL
862 && elf_section_data (sec)->relocs != internal_relocs)
863 free (internal_relocs);
864 return FALSE;
865 }
866 #undef skip_relax_pass_0
867 #undef skip_relax_pass_1
868 \f
869 /* Return TRUE if NAME is an unwind table section name. */
870
871 static inline bfd_boolean
872 is_unwind_section_name (bfd *abfd, const char *name)
873 {
874 if (elfNN_ia64_hpux_vec (abfd->xvec)
875 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
876 return FALSE;
877
878 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
879 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
880 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
881 }
882
883 /* Handle an IA-64 specific section when reading an object file. This
884 is called when bfd_section_from_shdr finds a section with an unknown
885 type. */
886
887 static bfd_boolean
888 elfNN_ia64_section_from_shdr (bfd *abfd,
889 Elf_Internal_Shdr *hdr,
890 const char *name,
891 int shindex)
892 {
893 /* There ought to be a place to keep ELF backend specific flags, but
894 at the moment there isn't one. We just keep track of the
895 sections by their name, instead. Fortunately, the ABI gives
896 suggested names for all the MIPS specific sections, so we will
897 probably get away with this. */
898 switch (hdr->sh_type)
899 {
900 case SHT_IA_64_UNWIND:
901 case SHT_IA_64_HP_OPT_ANOT:
902 break;
903
904 case SHT_IA_64_EXT:
905 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
906 return FALSE;
907 break;
908
909 default:
910 return FALSE;
911 }
912
913 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
914 return FALSE;
915
916 return TRUE;
917 }
918
919 /* Convert IA-64 specific section flags to bfd internal section flags. */
920
921 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
922 flag. */
923
924 static bfd_boolean
925 elfNN_ia64_section_flags (flagword *flags,
926 const Elf_Internal_Shdr *hdr)
927 {
928 if (hdr->sh_flags & SHF_IA_64_SHORT)
929 *flags |= SEC_SMALL_DATA;
930
931 return TRUE;
932 }
933
934 /* Set the correct type for an IA-64 ELF section. We do this by the
935 section name, which is a hack, but ought to work. */
936
937 static bfd_boolean
938 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
939 asection *sec)
940 {
941 const char *name;
942
943 name = bfd_get_section_name (abfd, sec);
944
945 if (is_unwind_section_name (abfd, name))
946 {
947 /* We don't have the sections numbered at this point, so sh_info
948 is set later, in elfNN_ia64_final_write_processing. */
949 hdr->sh_type = SHT_IA_64_UNWIND;
950 hdr->sh_flags |= SHF_LINK_ORDER;
951 }
952 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
953 hdr->sh_type = SHT_IA_64_EXT;
954 else if (strcmp (name, ".HP.opt_annot") == 0)
955 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
956 else if (strcmp (name, ".reloc") == 0)
957 /* This is an ugly, but unfortunately necessary hack that is
958 needed when producing EFI binaries on IA-64. It tells
959 elf.c:elf_fake_sections() not to consider ".reloc" as a section
960 containing ELF relocation info. We need this hack in order to
961 be able to generate ELF binaries that can be translated into
962 EFI applications (which are essentially COFF objects). Those
963 files contain a COFF ".reloc" section inside an ELFNN object,
964 which would normally cause BFD to segfault because it would
965 attempt to interpret this section as containing relocation
966 entries for section "oc". With this hack enabled, ".reloc"
967 will be treated as a normal data section, which will avoid the
968 segfault. However, you won't be able to create an ELFNN binary
969 with a section named "oc" that needs relocations, but that's
970 the kind of ugly side-effects you get when detecting section
971 types based on their names... In practice, this limitation is
972 unlikely to bite. */
973 hdr->sh_type = SHT_PROGBITS;
974
975 if (sec->flags & SEC_SMALL_DATA)
976 hdr->sh_flags |= SHF_IA_64_SHORT;
977
978 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
979
980 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
981 hdr->sh_flags |= SHF_IA_64_HP_TLS;
982
983 return TRUE;
984 }
985
986 /* The final processing done just before writing out an IA-64 ELF
987 object file. */
988
989 static void
990 elfNN_ia64_final_write_processing (bfd *abfd,
991 bfd_boolean linker ATTRIBUTE_UNUSED)
992 {
993 Elf_Internal_Shdr *hdr;
994 asection *s;
995
996 for (s = abfd->sections; s; s = s->next)
997 {
998 hdr = &elf_section_data (s)->this_hdr;
999 switch (hdr->sh_type)
1000 {
1001 case SHT_IA_64_UNWIND:
1002 /* The IA-64 processor-specific ABI requires setting sh_link
1003 to the unwind section, whereas HP-UX requires sh_info to
1004 do so. For maximum compatibility, we'll set both for
1005 now... */
1006 hdr->sh_info = hdr->sh_link;
1007 break;
1008 }
1009 }
1010
1011 if (! elf_flags_init (abfd))
1012 {
1013 unsigned long flags = 0;
1014
1015 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1016 flags |= EF_IA_64_BE;
1017 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1018 flags |= EF_IA_64_ABI64;
1019
1020 elf_elfheader(abfd)->e_flags = flags;
1021 elf_flags_init (abfd) = TRUE;
1022 }
1023 }
1024
1025 /* Hook called by the linker routine which adds symbols from an object
1026 file. We use it to put .comm items in .sbss, and not .bss. */
1027
1028 static bfd_boolean
1029 elfNN_ia64_add_symbol_hook (bfd *abfd,
1030 struct bfd_link_info *info,
1031 Elf_Internal_Sym *sym,
1032 const char **namep ATTRIBUTE_UNUSED,
1033 flagword *flagsp ATTRIBUTE_UNUSED,
1034 asection **secp,
1035 bfd_vma *valp)
1036 {
1037 if (sym->st_shndx == SHN_COMMON
1038 && !bfd_link_relocatable (info)
1039 && sym->st_size <= elf_gp_size (abfd))
1040 {
1041 /* Common symbols less than or equal to -G nn bytes are
1042 automatically put into .sbss. */
1043
1044 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1045
1046 if (scomm == NULL)
1047 {
1048 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1049 (SEC_ALLOC
1050 | SEC_IS_COMMON
1051 | SEC_LINKER_CREATED));
1052 if (scomm == NULL)
1053 return FALSE;
1054 }
1055
1056 *secp = scomm;
1057 *valp = sym->st_size;
1058 }
1059
1060 return TRUE;
1061 }
1062
1063 /* Return the number of additional phdrs we will need. */
1064
1065 static int
1066 elfNN_ia64_additional_program_headers (bfd *abfd,
1067 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1068 {
1069 asection *s;
1070 int ret = 0;
1071
1072 /* See if we need a PT_IA_64_ARCHEXT segment. */
1073 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1074 if (s && (s->flags & SEC_LOAD))
1075 ++ret;
1076
1077 /* Count how many PT_IA_64_UNWIND segments we need. */
1078 for (s = abfd->sections; s; s = s->next)
1079 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1080 ++ret;
1081
1082 return ret;
1083 }
1084
1085 static bfd_boolean
1086 elfNN_ia64_modify_segment_map (bfd *abfd,
1087 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1088 {
1089 struct elf_segment_map *m, **pm;
1090 Elf_Internal_Shdr *hdr;
1091 asection *s;
1092
1093 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1094 all PT_LOAD segments. */
1095 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1096 if (s && (s->flags & SEC_LOAD))
1097 {
1098 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1099 if (m->p_type == PT_IA_64_ARCHEXT)
1100 break;
1101 if (m == NULL)
1102 {
1103 m = ((struct elf_segment_map *)
1104 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1105 if (m == NULL)
1106 return FALSE;
1107
1108 m->p_type = PT_IA_64_ARCHEXT;
1109 m->count = 1;
1110 m->sections[0] = s;
1111
1112 /* We want to put it after the PHDR and INTERP segments. */
1113 pm = &elf_seg_map (abfd);
1114 while (*pm != NULL
1115 && ((*pm)->p_type == PT_PHDR
1116 || (*pm)->p_type == PT_INTERP))
1117 pm = &(*pm)->next;
1118
1119 m->next = *pm;
1120 *pm = m;
1121 }
1122 }
1123
1124 /* Install PT_IA_64_UNWIND segments, if needed. */
1125 for (s = abfd->sections; s; s = s->next)
1126 {
1127 hdr = &elf_section_data (s)->this_hdr;
1128 if (hdr->sh_type != SHT_IA_64_UNWIND)
1129 continue;
1130
1131 if (s && (s->flags & SEC_LOAD))
1132 {
1133 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1134 if (m->p_type == PT_IA_64_UNWIND)
1135 {
1136 int i;
1137
1138 /* Look through all sections in the unwind segment
1139 for a match since there may be multiple sections
1140 to a segment. */
1141 for (i = m->count - 1; i >= 0; --i)
1142 if (m->sections[i] == s)
1143 break;
1144
1145 if (i >= 0)
1146 break;
1147 }
1148
1149 if (m == NULL)
1150 {
1151 m = ((struct elf_segment_map *)
1152 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1153 if (m == NULL)
1154 return FALSE;
1155
1156 m->p_type = PT_IA_64_UNWIND;
1157 m->count = 1;
1158 m->sections[0] = s;
1159 m->next = NULL;
1160
1161 /* We want to put it last. */
1162 pm = &elf_seg_map (abfd);
1163 while (*pm != NULL)
1164 pm = &(*pm)->next;
1165 *pm = m;
1166 }
1167 }
1168 }
1169
1170 return TRUE;
1171 }
1172
1173 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1174 the input sections for each output section in the segment and testing
1175 for SHF_IA_64_NORECOV on each. */
1176
1177 static bfd_boolean
1178 elfNN_ia64_modify_program_headers (bfd *abfd,
1179 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1180 {
1181 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1182 struct elf_segment_map *m;
1183 Elf_Internal_Phdr *p;
1184
1185 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1186 if (m->p_type == PT_LOAD)
1187 {
1188 int i;
1189 for (i = m->count - 1; i >= 0; --i)
1190 {
1191 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1192
1193 while (order != NULL)
1194 {
1195 if (order->type == bfd_indirect_link_order)
1196 {
1197 asection *is = order->u.indirect.section;
1198 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1199 if (flags & SHF_IA_64_NORECOV)
1200 {
1201 p->p_flags |= PF_IA_64_NORECOV;
1202 goto found;
1203 }
1204 }
1205 order = order->next;
1206 }
1207 }
1208 found:;
1209 }
1210
1211 return TRUE;
1212 }
1213
1214 /* According to the Tahoe assembler spec, all labels starting with a
1215 '.' are local. */
1216
1217 static bfd_boolean
1218 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1219 const char *name)
1220 {
1221 return name[0] == '.';
1222 }
1223
1224 /* Should we do dynamic things to this symbol? */
1225
1226 static bfd_boolean
1227 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1228 struct bfd_link_info *info, int r_type)
1229 {
1230 bfd_boolean ignore_protected
1231 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1232 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1233
1234 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1235 }
1236 \f
1237 static struct bfd_hash_entry*
1238 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1239 struct bfd_hash_table *table,
1240 const char *string)
1241 {
1242 struct elfNN_ia64_link_hash_entry *ret;
1243 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1244
1245 /* Allocate the structure if it has not already been allocated by a
1246 subclass. */
1247 if (!ret)
1248 ret = bfd_hash_allocate (table, sizeof (*ret));
1249
1250 if (!ret)
1251 return 0;
1252
1253 /* Call the allocation method of the superclass. */
1254 ret = ((struct elfNN_ia64_link_hash_entry *)
1255 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1256 table, string));
1257
1258 ret->info = NULL;
1259 ret->count = 0;
1260 ret->sorted_count = 0;
1261 ret->size = 0;
1262 return (struct bfd_hash_entry *) ret;
1263 }
1264
1265 static void
1266 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1267 struct elf_link_hash_entry *xdir,
1268 struct elf_link_hash_entry *xind)
1269 {
1270 struct elfNN_ia64_link_hash_entry *dir, *ind;
1271
1272 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1273 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1274
1275 /* Copy down any references that we may have already seen to the
1276 symbol which just became indirect. */
1277
1278 if (dir->root.versioned != versioned_hidden)
1279 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1280 dir->root.ref_regular |= ind->root.ref_regular;
1281 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1282 dir->root.needs_plt |= ind->root.needs_plt;
1283
1284 if (ind->root.root.type != bfd_link_hash_indirect)
1285 return;
1286
1287 /* Copy over the got and plt data. This would have been done
1288 by check_relocs. */
1289
1290 if (ind->info != NULL)
1291 {
1292 struct elfNN_ia64_dyn_sym_info *dyn_i;
1293 unsigned int count;
1294
1295 if (dir->info)
1296 free (dir->info);
1297
1298 dir->info = ind->info;
1299 dir->count = ind->count;
1300 dir->sorted_count = ind->sorted_count;
1301 dir->size = ind->size;
1302
1303 ind->info = NULL;
1304 ind->count = 0;
1305 ind->sorted_count = 0;
1306 ind->size = 0;
1307
1308 /* Fix up the dyn_sym_info pointers to the global symbol. */
1309 for (count = dir->count, dyn_i = dir->info;
1310 count != 0;
1311 count--, dyn_i++)
1312 dyn_i->h = &dir->root;
1313 }
1314
1315 /* Copy over the dynindx. */
1316
1317 if (ind->root.dynindx != -1)
1318 {
1319 if (dir->root.dynindx != -1)
1320 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1321 dir->root.dynstr_index);
1322 dir->root.dynindx = ind->root.dynindx;
1323 dir->root.dynstr_index = ind->root.dynstr_index;
1324 ind->root.dynindx = -1;
1325 ind->root.dynstr_index = 0;
1326 }
1327 }
1328
1329 static void
1330 elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1331 struct elf_link_hash_entry *xh,
1332 bfd_boolean force_local)
1333 {
1334 struct elfNN_ia64_link_hash_entry *h;
1335 struct elfNN_ia64_dyn_sym_info *dyn_i;
1336 unsigned int count;
1337
1338 h = (struct elfNN_ia64_link_hash_entry *)xh;
1339
1340 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1341
1342 for (count = h->count, dyn_i = h->info;
1343 count != 0;
1344 count--, dyn_i++)
1345 {
1346 dyn_i->want_plt2 = 0;
1347 dyn_i->want_plt = 0;
1348 }
1349 }
1350
1351 /* Compute a hash of a local hash entry. */
1352
1353 static hashval_t
1354 elfNN_ia64_local_htab_hash (const void *ptr)
1355 {
1356 struct elfNN_ia64_local_hash_entry *entry
1357 = (struct elfNN_ia64_local_hash_entry *) ptr;
1358
1359 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1360 }
1361
1362 /* Compare local hash entries. */
1363
1364 static int
1365 elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1366 {
1367 struct elfNN_ia64_local_hash_entry *entry1
1368 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1369 struct elfNN_ia64_local_hash_entry *entry2
1370 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1371
1372 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1373 }
1374
1375 /* Free the global elfNN_ia64_dyn_sym_info array. */
1376
1377 static bfd_boolean
1378 elfNN_ia64_global_dyn_info_free (void **xentry,
1379 void * unused ATTRIBUTE_UNUSED)
1380 {
1381 struct elfNN_ia64_link_hash_entry *entry
1382 = (struct elfNN_ia64_link_hash_entry *) xentry;
1383
1384 if (entry->info)
1385 {
1386 free (entry->info);
1387 entry->info = NULL;
1388 entry->count = 0;
1389 entry->sorted_count = 0;
1390 entry->size = 0;
1391 }
1392
1393 return TRUE;
1394 }
1395
1396 /* Free the local elfNN_ia64_dyn_sym_info array. */
1397
1398 static bfd_boolean
1399 elfNN_ia64_local_dyn_info_free (void **slot,
1400 void * unused ATTRIBUTE_UNUSED)
1401 {
1402 struct elfNN_ia64_local_hash_entry *entry
1403 = (struct elfNN_ia64_local_hash_entry *) *slot;
1404
1405 if (entry->info)
1406 {
1407 free (entry->info);
1408 entry->info = NULL;
1409 entry->count = 0;
1410 entry->sorted_count = 0;
1411 entry->size = 0;
1412 }
1413
1414 return TRUE;
1415 }
1416
1417 /* Destroy IA-64 linker hash table. */
1418
1419 static void
1420 elfNN_ia64_link_hash_table_free (bfd *obfd)
1421 {
1422 struct elfNN_ia64_link_hash_table *ia64_info
1423 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
1424 if (ia64_info->loc_hash_table)
1425 {
1426 htab_traverse (ia64_info->loc_hash_table,
1427 elfNN_ia64_local_dyn_info_free, NULL);
1428 htab_delete (ia64_info->loc_hash_table);
1429 }
1430 if (ia64_info->loc_hash_memory)
1431 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1432 elf_link_hash_traverse (&ia64_info->root,
1433 elfNN_ia64_global_dyn_info_free, NULL);
1434 _bfd_elf_link_hash_table_free (obfd);
1435 }
1436
1437 /* Create the derived linker hash table. The IA-64 ELF port uses this
1438 derived hash table to keep information specific to the IA-64 ElF
1439 linker (without using static variables). */
1440
1441 static struct bfd_link_hash_table *
1442 elfNN_ia64_hash_table_create (bfd *abfd)
1443 {
1444 struct elfNN_ia64_link_hash_table *ret;
1445
1446 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1447 if (!ret)
1448 return NULL;
1449
1450 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1451 elfNN_ia64_new_elf_hash_entry,
1452 sizeof (struct elfNN_ia64_link_hash_entry),
1453 IA64_ELF_DATA))
1454 {
1455 free (ret);
1456 return NULL;
1457 }
1458
1459 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1460 elfNN_ia64_local_htab_eq, NULL);
1461 ret->loc_hash_memory = objalloc_create ();
1462 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1463 {
1464 elfNN_ia64_link_hash_table_free (abfd);
1465 return NULL;
1466 }
1467 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
1468
1469 return &ret->root.root;
1470 }
1471
1472 /* Traverse both local and global hash tables. */
1473
1474 struct elfNN_ia64_dyn_sym_traverse_data
1475 {
1476 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1477 void * data;
1478 };
1479
1480 static bfd_boolean
1481 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1482 void * xdata)
1483 {
1484 struct elfNN_ia64_link_hash_entry *entry
1485 = (struct elfNN_ia64_link_hash_entry *) xentry;
1486 struct elfNN_ia64_dyn_sym_traverse_data *data
1487 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1488 struct elfNN_ia64_dyn_sym_info *dyn_i;
1489 unsigned int count;
1490
1491 for (count = entry->count, dyn_i = entry->info;
1492 count != 0;
1493 count--, dyn_i++)
1494 if (! (*data->func) (dyn_i, data->data))
1495 return FALSE;
1496 return TRUE;
1497 }
1498
1499 static bfd_boolean
1500 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1501 {
1502 struct elfNN_ia64_local_hash_entry *entry
1503 = (struct elfNN_ia64_local_hash_entry *) *slot;
1504 struct elfNN_ia64_dyn_sym_traverse_data *data
1505 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1506 struct elfNN_ia64_dyn_sym_info *dyn_i;
1507 unsigned int count;
1508
1509 for (count = entry->count, dyn_i = entry->info;
1510 count != 0;
1511 count--, dyn_i++)
1512 if (! (*data->func) (dyn_i, data->data))
1513 return FALSE;
1514 return TRUE;
1515 }
1516
1517 static void
1518 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1519 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1520 void * data)
1521 {
1522 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1523
1524 xdata.func = func;
1525 xdata.data = data;
1526
1527 elf_link_hash_traverse (&ia64_info->root,
1528 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1529 htab_traverse (ia64_info->loc_hash_table,
1530 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1531 }
1532 \f
1533 static bfd_boolean
1534 elfNN_ia64_create_dynamic_sections (bfd *abfd,
1535 struct bfd_link_info *info)
1536 {
1537 struct elfNN_ia64_link_hash_table *ia64_info;
1538 asection *s;
1539
1540 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1541 return FALSE;
1542
1543 ia64_info = elfNN_ia64_hash_table (info);
1544 if (ia64_info == NULL)
1545 return FALSE;
1546
1547 {
1548 flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1549 bfd_set_section_flags (abfd, ia64_info->root.sgot,
1550 SEC_SMALL_DATA | flags);
1551 /* The .got section is always aligned at 8 bytes. */
1552 if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3))
1553 return FALSE;
1554 }
1555
1556 if (!get_pltoff (abfd, info, ia64_info))
1557 return FALSE;
1558
1559 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1560 (SEC_ALLOC | SEC_LOAD
1561 | SEC_HAS_CONTENTS
1562 | SEC_IN_MEMORY
1563 | SEC_LINKER_CREATED
1564 | SEC_READONLY));
1565 if (s == NULL
1566 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
1567 return FALSE;
1568 ia64_info->rel_pltoff_sec = s;
1569
1570 return TRUE;
1571 }
1572
1573 /* Find and/or create a hash entry for local symbol. */
1574 static struct elfNN_ia64_local_hash_entry *
1575 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1576 bfd *abfd, const Elf_Internal_Rela *rel,
1577 bfd_boolean create)
1578 {
1579 struct elfNN_ia64_local_hash_entry e, *ret;
1580 asection *sec = abfd->sections;
1581 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1582 ELFNN_R_SYM (rel->r_info));
1583 void **slot;
1584
1585 e.id = sec->id;
1586 e.r_sym = ELFNN_R_SYM (rel->r_info);
1587 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1588 create ? INSERT : NO_INSERT);
1589
1590 if (!slot)
1591 return NULL;
1592
1593 if (*slot)
1594 return (struct elfNN_ia64_local_hash_entry *) *slot;
1595
1596 ret = (struct elfNN_ia64_local_hash_entry *)
1597 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1598 sizeof (struct elfNN_ia64_local_hash_entry));
1599 if (ret)
1600 {
1601 memset (ret, 0, sizeof (*ret));
1602 ret->id = sec->id;
1603 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1604 *slot = ret;
1605 }
1606 return ret;
1607 }
1608
1609 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1610
1611 static int
1612 addend_compare (const void *xp, const void *yp)
1613 {
1614 const struct elfNN_ia64_dyn_sym_info *x
1615 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1616 const struct elfNN_ia64_dyn_sym_info *y
1617 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1618
1619 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1620 }
1621
1622 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1623
1624 static unsigned int
1625 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1626 unsigned int count)
1627 {
1628 bfd_vma curr, prev, got_offset;
1629 unsigned int i, kept, dupes, diff, dest, src, len;
1630
1631 qsort (info, count, sizeof (*info), addend_compare);
1632
1633 /* Find the first duplicate. */
1634 prev = info [0].addend;
1635 got_offset = info [0].got_offset;
1636 for (i = 1; i < count; i++)
1637 {
1638 curr = info [i].addend;
1639 if (curr == prev)
1640 {
1641 /* For duplicates, make sure that GOT_OFFSET is valid. */
1642 if (got_offset == (bfd_vma) -1)
1643 got_offset = info [i].got_offset;
1644 break;
1645 }
1646 got_offset = info [i].got_offset;
1647 prev = curr;
1648 }
1649
1650 /* We may move a block of elements to here. */
1651 dest = i++;
1652
1653 /* Remove duplicates. */
1654 if (i < count)
1655 {
1656 while (i < count)
1657 {
1658 /* For duplicates, make sure that the kept one has a valid
1659 got_offset. */
1660 kept = dest - 1;
1661 if (got_offset != (bfd_vma) -1)
1662 info [kept].got_offset = got_offset;
1663
1664 curr = info [i].addend;
1665 got_offset = info [i].got_offset;
1666
1667 /* Move a block of elements whose first one is different from
1668 the previous. */
1669 if (curr == prev)
1670 {
1671 for (src = i + 1; src < count; src++)
1672 {
1673 if (info [src].addend != curr)
1674 break;
1675 /* For duplicates, make sure that GOT_OFFSET is
1676 valid. */
1677 if (got_offset == (bfd_vma) -1)
1678 got_offset = info [src].got_offset;
1679 }
1680
1681 /* Make sure that the kept one has a valid got_offset. */
1682 if (got_offset != (bfd_vma) -1)
1683 info [kept].got_offset = got_offset;
1684 }
1685 else
1686 src = i;
1687
1688 if (src >= count)
1689 break;
1690
1691 /* Find the next duplicate. SRC will be kept. */
1692 prev = info [src].addend;
1693 got_offset = info [src].got_offset;
1694 for (dupes = src + 1; dupes < count; dupes ++)
1695 {
1696 curr = info [dupes].addend;
1697 if (curr == prev)
1698 {
1699 /* Make sure that got_offset is valid. */
1700 if (got_offset == (bfd_vma) -1)
1701 got_offset = info [dupes].got_offset;
1702
1703 /* For duplicates, make sure that the kept one has
1704 a valid got_offset. */
1705 if (got_offset != (bfd_vma) -1)
1706 info [dupes - 1].got_offset = got_offset;
1707 break;
1708 }
1709 got_offset = info [dupes].got_offset;
1710 prev = curr;
1711 }
1712
1713 /* How much to move. */
1714 len = dupes - src;
1715 i = dupes + 1;
1716
1717 if (len == 1 && dupes < count)
1718 {
1719 /* If we only move 1 element, we combine it with the next
1720 one. There must be at least a duplicate. Find the
1721 next different one. */
1722 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1723 {
1724 if (info [diff].addend != curr)
1725 break;
1726 /* Make sure that got_offset is valid. */
1727 if (got_offset == (bfd_vma) -1)
1728 got_offset = info [diff].got_offset;
1729 }
1730
1731 /* Makre sure that the last duplicated one has an valid
1732 offset. */
1733 BFD_ASSERT (curr == prev);
1734 if (got_offset != (bfd_vma) -1)
1735 info [diff - 1].got_offset = got_offset;
1736
1737 if (diff < count)
1738 {
1739 /* Find the next duplicate. Track the current valid
1740 offset. */
1741 prev = info [diff].addend;
1742 got_offset = info [diff].got_offset;
1743 for (dupes = diff + 1; dupes < count; dupes ++)
1744 {
1745 curr = info [dupes].addend;
1746 if (curr == prev)
1747 {
1748 /* For duplicates, make sure that GOT_OFFSET
1749 is valid. */
1750 if (got_offset == (bfd_vma) -1)
1751 got_offset = info [dupes].got_offset;
1752 break;
1753 }
1754 got_offset = info [dupes].got_offset;
1755 prev = curr;
1756 diff++;
1757 }
1758
1759 len = diff - src + 1;
1760 i = diff + 1;
1761 }
1762 }
1763
1764 memmove (&info [dest], &info [src], len * sizeof (*info));
1765
1766 dest += len;
1767 }
1768
1769 count = dest;
1770 }
1771 else
1772 {
1773 /* When we get here, either there is no duplicate at all or
1774 the only duplicate is the last element. */
1775 if (dest < count)
1776 {
1777 /* If the last element is a duplicate, make sure that the
1778 kept one has a valid got_offset. We also update count. */
1779 if (got_offset != (bfd_vma) -1)
1780 info [dest - 1].got_offset = got_offset;
1781 count = dest;
1782 }
1783 }
1784
1785 return count;
1786 }
1787
1788 /* Find and/or create a descriptor for dynamic symbol info. This will
1789 vary based on global or local symbol, and the addend to the reloc.
1790
1791 We don't sort when inserting. Also, we sort and eliminate
1792 duplicates if there is an unsorted section. Typically, this will
1793 only happen once, because we do all insertions before lookups. We
1794 then use bsearch to do a lookup. This also allows lookups to be
1795 fast. So we have fast insertion (O(log N) due to duplicate check),
1796 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1797 Previously, all lookups were O(N) because of the use of the linked
1798 list and also all insertions were O(N) because of the check for
1799 duplicates. There are some complications here because the array
1800 size grows occasionally, which may add an O(N) factor, but this
1801 should be rare. Also, we free the excess array allocation, which
1802 requires a copy which is O(N), but this only happens once. */
1803
1804 static struct elfNN_ia64_dyn_sym_info *
1805 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1806 struct elf_link_hash_entry *h, bfd *abfd,
1807 const Elf_Internal_Rela *rel, bfd_boolean create)
1808 {
1809 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1810 unsigned int *count_p, *sorted_count_p, *size_p;
1811 unsigned int count, sorted_count, size;
1812 bfd_vma addend = rel ? rel->r_addend : 0;
1813 bfd_size_type amt;
1814
1815 if (h)
1816 {
1817 struct elfNN_ia64_link_hash_entry *global_h;
1818
1819 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1820 info_p = &global_h->info;
1821 count_p = &global_h->count;
1822 sorted_count_p = &global_h->sorted_count;
1823 size_p = &global_h->size;
1824 }
1825 else
1826 {
1827 struct elfNN_ia64_local_hash_entry *loc_h;
1828
1829 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1830 if (!loc_h)
1831 {
1832 BFD_ASSERT (!create);
1833 return NULL;
1834 }
1835
1836 info_p = &loc_h->info;
1837 count_p = &loc_h->count;
1838 sorted_count_p = &loc_h->sorted_count;
1839 size_p = &loc_h->size;
1840 }
1841
1842 count = *count_p;
1843 sorted_count = *sorted_count_p;
1844 size = *size_p;
1845 info = *info_p;
1846 if (create)
1847 {
1848 /* When we create the array, we don't check for duplicates,
1849 except in the previously sorted section if one exists, and
1850 against the last inserted entry. This allows insertions to
1851 be fast. */
1852 if (info)
1853 {
1854 if (sorted_count)
1855 {
1856 /* Try bsearch first on the sorted section. */
1857 key.addend = addend;
1858 dyn_i = bsearch (&key, info, sorted_count,
1859 sizeof (*info), addend_compare);
1860
1861 if (dyn_i)
1862 {
1863 return dyn_i;
1864 }
1865 }
1866
1867 /* Do a quick check for the last inserted entry. */
1868 dyn_i = info + count - 1;
1869 if (dyn_i->addend == addend)
1870 {
1871 return dyn_i;
1872 }
1873 }
1874
1875 if (size == 0)
1876 {
1877 /* It is the very first element. We create the array of size
1878 1. */
1879 size = 1;
1880 amt = size * sizeof (*info);
1881 info = bfd_malloc (amt);
1882 }
1883 else if (size <= count)
1884 {
1885 /* We double the array size every time when we reach the
1886 size limit. */
1887 size += size;
1888 amt = size * sizeof (*info);
1889 info = bfd_realloc (info, amt);
1890 }
1891 else
1892 goto has_space;
1893
1894 if (info == NULL)
1895 return NULL;
1896 *size_p = size;
1897 *info_p = info;
1898
1899 has_space:
1900 /* Append the new one to the array. */
1901 dyn_i = info + count;
1902 memset (dyn_i, 0, sizeof (*dyn_i));
1903 dyn_i->got_offset = (bfd_vma) -1;
1904 dyn_i->addend = addend;
1905
1906 /* We increment count only since the new ones are unsorted and
1907 may have duplicate. */
1908 (*count_p)++;
1909 }
1910 else
1911 {
1912 /* It is a lookup without insertion. Sort array if part of the
1913 array isn't sorted. */
1914 if (count != sorted_count)
1915 {
1916 count = sort_dyn_sym_info (info, count);
1917 *count_p = count;
1918 *sorted_count_p = count;
1919 }
1920
1921 /* Free unused memory. */
1922 if (size != count)
1923 {
1924 amt = count * sizeof (*info);
1925 info = bfd_malloc (amt);
1926 if (info != NULL)
1927 {
1928 memcpy (info, *info_p, amt);
1929 free (*info_p);
1930 *size_p = count;
1931 *info_p = info;
1932 }
1933 }
1934
1935 key.addend = addend;
1936 dyn_i = bsearch (&key, info, count,
1937 sizeof (*info), addend_compare);
1938 }
1939
1940 return dyn_i;
1941 }
1942
1943 static asection *
1944 get_got (bfd *abfd, struct bfd_link_info *info,
1945 struct elfNN_ia64_link_hash_table *ia64_info)
1946 {
1947 asection *got;
1948 bfd *dynobj;
1949
1950 got = ia64_info->root.sgot;
1951 if (!got)
1952 {
1953 flagword flags;
1954
1955 dynobj = ia64_info->root.dynobj;
1956 if (!dynobj)
1957 ia64_info->root.dynobj = dynobj = abfd;
1958 if (!_bfd_elf_create_got_section (dynobj, info))
1959 return NULL;
1960
1961 got = ia64_info->root.sgot;
1962
1963 /* The .got section is always aligned at 8 bytes. */
1964 if (!bfd_set_section_alignment (abfd, got, 3))
1965 return NULL;
1966
1967 flags = bfd_get_section_flags (abfd, got);
1968 if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags))
1969 return NULL;
1970 }
1971
1972 return got;
1973 }
1974
1975 /* Create function descriptor section (.opd). This section is called .opd
1976 because it contains "official procedure descriptors". The "official"
1977 refers to the fact that these descriptors are used when taking the address
1978 of a procedure, thus ensuring a unique address for each procedure. */
1979
1980 static asection *
1981 get_fptr (bfd *abfd, struct bfd_link_info *info,
1982 struct elfNN_ia64_link_hash_table *ia64_info)
1983 {
1984 asection *fptr;
1985 bfd *dynobj;
1986
1987 fptr = ia64_info->fptr_sec;
1988 if (!fptr)
1989 {
1990 dynobj = ia64_info->root.dynobj;
1991 if (!dynobj)
1992 ia64_info->root.dynobj = dynobj = abfd;
1993
1994 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
1995 (SEC_ALLOC
1996 | SEC_LOAD
1997 | SEC_HAS_CONTENTS
1998 | SEC_IN_MEMORY
1999 | (bfd_link_pie (info)
2000 ? 0 : SEC_READONLY)
2001 | SEC_LINKER_CREATED));
2002 if (!fptr
2003 || !bfd_set_section_alignment (abfd, fptr, 4))
2004 {
2005 BFD_ASSERT (0);
2006 return NULL;
2007 }
2008
2009 ia64_info->fptr_sec = fptr;
2010
2011 if (bfd_link_pie (info))
2012 {
2013 asection *fptr_rel;
2014 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2015 (SEC_ALLOC | SEC_LOAD
2016 | SEC_HAS_CONTENTS
2017 | SEC_IN_MEMORY
2018 | SEC_LINKER_CREATED
2019 | SEC_READONLY));
2020 if (fptr_rel == NULL
2021 || !bfd_set_section_alignment (abfd, fptr_rel,
2022 LOG_SECTION_ALIGN))
2023 {
2024 BFD_ASSERT (0);
2025 return NULL;
2026 }
2027
2028 ia64_info->rel_fptr_sec = fptr_rel;
2029 }
2030 }
2031
2032 return fptr;
2033 }
2034
2035 static asection *
2036 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2037 struct elfNN_ia64_link_hash_table *ia64_info)
2038 {
2039 asection *pltoff;
2040 bfd *dynobj;
2041
2042 pltoff = ia64_info->pltoff_sec;
2043 if (!pltoff)
2044 {
2045 dynobj = ia64_info->root.dynobj;
2046 if (!dynobj)
2047 ia64_info->root.dynobj = dynobj = abfd;
2048
2049 pltoff = bfd_make_section_anyway_with_flags (dynobj,
2050 ELF_STRING_ia64_pltoff,
2051 (SEC_ALLOC
2052 | SEC_LOAD
2053 | SEC_HAS_CONTENTS
2054 | SEC_IN_MEMORY
2055 | SEC_SMALL_DATA
2056 | SEC_LINKER_CREATED));
2057 if (!pltoff
2058 || !bfd_set_section_alignment (abfd, pltoff, 4))
2059 {
2060 BFD_ASSERT (0);
2061 return NULL;
2062 }
2063
2064 ia64_info->pltoff_sec = pltoff;
2065 }
2066
2067 return pltoff;
2068 }
2069
2070 static asection *
2071 get_reloc_section (bfd *abfd,
2072 struct elfNN_ia64_link_hash_table *ia64_info,
2073 asection *sec, bfd_boolean create)
2074 {
2075 const char *srel_name;
2076 asection *srel;
2077 bfd *dynobj;
2078
2079 srel_name = (bfd_elf_string_from_elf_section
2080 (abfd, elf_elfheader(abfd)->e_shstrndx,
2081 _bfd_elf_single_rel_hdr (sec)->sh_name));
2082 if (srel_name == NULL)
2083 return NULL;
2084
2085 dynobj = ia64_info->root.dynobj;
2086 if (!dynobj)
2087 ia64_info->root.dynobj = dynobj = abfd;
2088
2089 srel = bfd_get_linker_section (dynobj, srel_name);
2090 if (srel == NULL && create)
2091 {
2092 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2093 (SEC_ALLOC | SEC_LOAD
2094 | SEC_HAS_CONTENTS
2095 | SEC_IN_MEMORY
2096 | SEC_LINKER_CREATED
2097 | SEC_READONLY));
2098 if (srel == NULL
2099 || !bfd_set_section_alignment (dynobj, srel,
2100 LOG_SECTION_ALIGN))
2101 return NULL;
2102 }
2103
2104 return srel;
2105 }
2106
2107 static bfd_boolean
2108 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2109 asection *srel, int type, bfd_boolean reltext)
2110 {
2111 struct elfNN_ia64_dyn_reloc_entry *rent;
2112
2113 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2114 if (rent->srel == srel && rent->type == type)
2115 break;
2116
2117 if (!rent)
2118 {
2119 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2120 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2121 if (!rent)
2122 return FALSE;
2123
2124 rent->next = dyn_i->reloc_entries;
2125 rent->srel = srel;
2126 rent->type = type;
2127 rent->count = 0;
2128 dyn_i->reloc_entries = rent;
2129 }
2130 rent->reltext = reltext;
2131 rent->count++;
2132
2133 return TRUE;
2134 }
2135
2136 static bfd_boolean
2137 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2138 asection *sec,
2139 const Elf_Internal_Rela *relocs)
2140 {
2141 struct elfNN_ia64_link_hash_table *ia64_info;
2142 const Elf_Internal_Rela *relend;
2143 Elf_Internal_Shdr *symtab_hdr;
2144 const Elf_Internal_Rela *rel;
2145 asection *got, *fptr, *srel, *pltoff;
2146 enum {
2147 NEED_GOT = 1,
2148 NEED_GOTX = 2,
2149 NEED_FPTR = 4,
2150 NEED_PLTOFF = 8,
2151 NEED_MIN_PLT = 16,
2152 NEED_FULL_PLT = 32,
2153 NEED_DYNREL = 64,
2154 NEED_LTOFF_FPTR = 128,
2155 NEED_TPREL = 256,
2156 NEED_DTPMOD = 512,
2157 NEED_DTPREL = 1024
2158 };
2159 int need_entry;
2160 struct elf_link_hash_entry *h;
2161 unsigned long r_symndx;
2162 bfd_boolean maybe_dynamic;
2163
2164 if (bfd_link_relocatable (info))
2165 return TRUE;
2166
2167 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2168 ia64_info = elfNN_ia64_hash_table (info);
2169 if (ia64_info == NULL)
2170 return FALSE;
2171
2172 got = fptr = srel = pltoff = NULL;
2173
2174 relend = relocs + sec->reloc_count;
2175
2176 /* We scan relocations first to create dynamic relocation arrays. We
2177 modified get_dyn_sym_info to allow fast insertion and support fast
2178 lookup in the next loop. */
2179 for (rel = relocs; rel < relend; ++rel)
2180 {
2181 r_symndx = ELFNN_R_SYM (rel->r_info);
2182 if (r_symndx >= symtab_hdr->sh_info)
2183 {
2184 long indx = r_symndx - symtab_hdr->sh_info;
2185 h = elf_sym_hashes (abfd)[indx];
2186 while (h->root.type == bfd_link_hash_indirect
2187 || h->root.type == bfd_link_hash_warning)
2188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2189 }
2190 else
2191 h = NULL;
2192
2193 /* We can only get preliminary data on whether a symbol is
2194 locally or externally defined, as not all of the input files
2195 have yet been processed. Do something with what we know, as
2196 this may help reduce memory usage and processing time later. */
2197 maybe_dynamic = (h && ((!bfd_link_executable (info)
2198 && (!SYMBOLIC_BIND (info, h)
2199 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2200 || !h->def_regular
2201 || h->root.type == bfd_link_hash_defweak));
2202
2203 need_entry = 0;
2204 switch (ELFNN_R_TYPE (rel->r_info))
2205 {
2206 case R_IA64_TPREL64MSB:
2207 case R_IA64_TPREL64LSB:
2208 if (bfd_link_pic (info) || maybe_dynamic)
2209 need_entry = NEED_DYNREL;
2210 break;
2211
2212 case R_IA64_LTOFF_TPREL22:
2213 need_entry = NEED_TPREL;
2214 if (bfd_link_pic (info))
2215 info->flags |= DF_STATIC_TLS;
2216 break;
2217
2218 case R_IA64_DTPREL32MSB:
2219 case R_IA64_DTPREL32LSB:
2220 case R_IA64_DTPREL64MSB:
2221 case R_IA64_DTPREL64LSB:
2222 if (bfd_link_pic (info) || maybe_dynamic)
2223 need_entry = NEED_DYNREL;
2224 break;
2225
2226 case R_IA64_LTOFF_DTPREL22:
2227 need_entry = NEED_DTPREL;
2228 break;
2229
2230 case R_IA64_DTPMOD64MSB:
2231 case R_IA64_DTPMOD64LSB:
2232 if (bfd_link_pic (info) || maybe_dynamic)
2233 need_entry = NEED_DYNREL;
2234 break;
2235
2236 case R_IA64_LTOFF_DTPMOD22:
2237 need_entry = NEED_DTPMOD;
2238 break;
2239
2240 case R_IA64_LTOFF_FPTR22:
2241 case R_IA64_LTOFF_FPTR64I:
2242 case R_IA64_LTOFF_FPTR32MSB:
2243 case R_IA64_LTOFF_FPTR32LSB:
2244 case R_IA64_LTOFF_FPTR64MSB:
2245 case R_IA64_LTOFF_FPTR64LSB:
2246 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2247 break;
2248
2249 case R_IA64_FPTR64I:
2250 case R_IA64_FPTR32MSB:
2251 case R_IA64_FPTR32LSB:
2252 case R_IA64_FPTR64MSB:
2253 case R_IA64_FPTR64LSB:
2254 if (bfd_link_pic (info) || h)
2255 need_entry = NEED_FPTR | NEED_DYNREL;
2256 else
2257 need_entry = NEED_FPTR;
2258 break;
2259
2260 case R_IA64_LTOFF22:
2261 case R_IA64_LTOFF64I:
2262 need_entry = NEED_GOT;
2263 break;
2264
2265 case R_IA64_LTOFF22X:
2266 need_entry = NEED_GOTX;
2267 break;
2268
2269 case R_IA64_PLTOFF22:
2270 case R_IA64_PLTOFF64I:
2271 case R_IA64_PLTOFF64MSB:
2272 case R_IA64_PLTOFF64LSB:
2273 need_entry = NEED_PLTOFF;
2274 if (h)
2275 {
2276 if (maybe_dynamic)
2277 need_entry |= NEED_MIN_PLT;
2278 }
2279 else
2280 {
2281 (*info->callbacks->warning)
2282 (info, _("@pltoff reloc against local symbol"), 0,
2283 abfd, 0, (bfd_vma) 0);
2284 }
2285 break;
2286
2287 case R_IA64_PCREL21B:
2288 case R_IA64_PCREL60B:
2289 /* Depending on where this symbol is defined, we may or may not
2290 need a full plt entry. Only skip if we know we'll not need
2291 the entry -- static or symbolic, and the symbol definition
2292 has already been seen. */
2293 if (maybe_dynamic && rel->r_addend == 0)
2294 need_entry = NEED_FULL_PLT;
2295 break;
2296
2297 case R_IA64_IMM14:
2298 case R_IA64_IMM22:
2299 case R_IA64_IMM64:
2300 case R_IA64_DIR32MSB:
2301 case R_IA64_DIR32LSB:
2302 case R_IA64_DIR64MSB:
2303 case R_IA64_DIR64LSB:
2304 /* Shared objects will always need at least a REL relocation. */
2305 if (bfd_link_pic (info) || maybe_dynamic)
2306 need_entry = NEED_DYNREL;
2307 break;
2308
2309 case R_IA64_IPLTMSB:
2310 case R_IA64_IPLTLSB:
2311 /* Shared objects will always need at least a REL relocation. */
2312 if (bfd_link_pic (info) || maybe_dynamic)
2313 need_entry = NEED_DYNREL;
2314 break;
2315
2316 case R_IA64_PCREL22:
2317 case R_IA64_PCREL64I:
2318 case R_IA64_PCREL32MSB:
2319 case R_IA64_PCREL32LSB:
2320 case R_IA64_PCREL64MSB:
2321 case R_IA64_PCREL64LSB:
2322 if (maybe_dynamic)
2323 need_entry = NEED_DYNREL;
2324 break;
2325 }
2326
2327 if (!need_entry)
2328 continue;
2329
2330 if ((need_entry & NEED_FPTR) != 0
2331 && rel->r_addend)
2332 {
2333 (*info->callbacks->warning)
2334 (info, _("non-zero addend in @fptr reloc"), 0,
2335 abfd, 0, (bfd_vma) 0);
2336 }
2337
2338 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2339 return FALSE;
2340 }
2341
2342 /* Now, we only do lookup without insertion, which is very fast
2343 with the modified get_dyn_sym_info. */
2344 for (rel = relocs; rel < relend; ++rel)
2345 {
2346 struct elfNN_ia64_dyn_sym_info *dyn_i;
2347 int dynrel_type = R_IA64_NONE;
2348
2349 r_symndx = ELFNN_R_SYM (rel->r_info);
2350 if (r_symndx >= symtab_hdr->sh_info)
2351 {
2352 /* We're dealing with a global symbol -- find its hash entry
2353 and mark it as being referenced. */
2354 long indx = r_symndx - symtab_hdr->sh_info;
2355 h = elf_sym_hashes (abfd)[indx];
2356 while (h->root.type == bfd_link_hash_indirect
2357 || h->root.type == bfd_link_hash_warning)
2358 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2359
2360 /* PR15323, ref flags aren't set for references in the same
2361 object. */
2362 h->root.non_ir_ref = 1;
2363 h->ref_regular = 1;
2364 }
2365 else
2366 h = NULL;
2367
2368 /* We can only get preliminary data on whether a symbol is
2369 locally or externally defined, as not all of the input files
2370 have yet been processed. Do something with what we know, as
2371 this may help reduce memory usage and processing time later. */
2372 maybe_dynamic = (h && ((!bfd_link_executable (info)
2373 && (!SYMBOLIC_BIND (info, h)
2374 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2375 || !h->def_regular
2376 || h->root.type == bfd_link_hash_defweak));
2377
2378 need_entry = 0;
2379 switch (ELFNN_R_TYPE (rel->r_info))
2380 {
2381 case R_IA64_TPREL64MSB:
2382 case R_IA64_TPREL64LSB:
2383 if (bfd_link_pic (info) || maybe_dynamic)
2384 need_entry = NEED_DYNREL;
2385 dynrel_type = R_IA64_TPREL64LSB;
2386 if (bfd_link_pic (info))
2387 info->flags |= DF_STATIC_TLS;
2388 break;
2389
2390 case R_IA64_LTOFF_TPREL22:
2391 need_entry = NEED_TPREL;
2392 if (bfd_link_pic (info))
2393 info->flags |= DF_STATIC_TLS;
2394 break;
2395
2396 case R_IA64_DTPREL32MSB:
2397 case R_IA64_DTPREL32LSB:
2398 case R_IA64_DTPREL64MSB:
2399 case R_IA64_DTPREL64LSB:
2400 if (bfd_link_pic (info) || maybe_dynamic)
2401 need_entry = NEED_DYNREL;
2402 dynrel_type = R_IA64_DTPRELNNLSB;
2403 break;
2404
2405 case R_IA64_LTOFF_DTPREL22:
2406 need_entry = NEED_DTPREL;
2407 break;
2408
2409 case R_IA64_DTPMOD64MSB:
2410 case R_IA64_DTPMOD64LSB:
2411 if (bfd_link_pic (info) || maybe_dynamic)
2412 need_entry = NEED_DYNREL;
2413 dynrel_type = R_IA64_DTPMOD64LSB;
2414 break;
2415
2416 case R_IA64_LTOFF_DTPMOD22:
2417 need_entry = NEED_DTPMOD;
2418 break;
2419
2420 case R_IA64_LTOFF_FPTR22:
2421 case R_IA64_LTOFF_FPTR64I:
2422 case R_IA64_LTOFF_FPTR32MSB:
2423 case R_IA64_LTOFF_FPTR32LSB:
2424 case R_IA64_LTOFF_FPTR64MSB:
2425 case R_IA64_LTOFF_FPTR64LSB:
2426 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2427 break;
2428
2429 case R_IA64_FPTR64I:
2430 case R_IA64_FPTR32MSB:
2431 case R_IA64_FPTR32LSB:
2432 case R_IA64_FPTR64MSB:
2433 case R_IA64_FPTR64LSB:
2434 if (bfd_link_pic (info) || h)
2435 need_entry = NEED_FPTR | NEED_DYNREL;
2436 else
2437 need_entry = NEED_FPTR;
2438 dynrel_type = R_IA64_FPTRNNLSB;
2439 break;
2440
2441 case R_IA64_LTOFF22:
2442 case R_IA64_LTOFF64I:
2443 need_entry = NEED_GOT;
2444 break;
2445
2446 case R_IA64_LTOFF22X:
2447 need_entry = NEED_GOTX;
2448 break;
2449
2450 case R_IA64_PLTOFF22:
2451 case R_IA64_PLTOFF64I:
2452 case R_IA64_PLTOFF64MSB:
2453 case R_IA64_PLTOFF64LSB:
2454 need_entry = NEED_PLTOFF;
2455 if (h)
2456 {
2457 if (maybe_dynamic)
2458 need_entry |= NEED_MIN_PLT;
2459 }
2460 break;
2461
2462 case R_IA64_PCREL21B:
2463 case R_IA64_PCREL60B:
2464 /* Depending on where this symbol is defined, we may or may not
2465 need a full plt entry. Only skip if we know we'll not need
2466 the entry -- static or symbolic, and the symbol definition
2467 has already been seen. */
2468 if (maybe_dynamic && rel->r_addend == 0)
2469 need_entry = NEED_FULL_PLT;
2470 break;
2471
2472 case R_IA64_IMM14:
2473 case R_IA64_IMM22:
2474 case R_IA64_IMM64:
2475 case R_IA64_DIR32MSB:
2476 case R_IA64_DIR32LSB:
2477 case R_IA64_DIR64MSB:
2478 case R_IA64_DIR64LSB:
2479 /* Shared objects will always need at least a REL relocation. */
2480 if (bfd_link_pic (info) || maybe_dynamic)
2481 need_entry = NEED_DYNREL;
2482 dynrel_type = R_IA64_DIRNNLSB;
2483 break;
2484
2485 case R_IA64_IPLTMSB:
2486 case R_IA64_IPLTLSB:
2487 /* Shared objects will always need at least a REL relocation. */
2488 if (bfd_link_pic (info) || maybe_dynamic)
2489 need_entry = NEED_DYNREL;
2490 dynrel_type = R_IA64_IPLTLSB;
2491 break;
2492
2493 case R_IA64_PCREL22:
2494 case R_IA64_PCREL64I:
2495 case R_IA64_PCREL32MSB:
2496 case R_IA64_PCREL32LSB:
2497 case R_IA64_PCREL64MSB:
2498 case R_IA64_PCREL64LSB:
2499 if (maybe_dynamic)
2500 need_entry = NEED_DYNREL;
2501 dynrel_type = R_IA64_PCRELNNLSB;
2502 break;
2503 }
2504
2505 if (!need_entry)
2506 continue;
2507
2508 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2509
2510 /* Record whether or not this is a local symbol. */
2511 dyn_i->h = h;
2512
2513 /* Create what's needed. */
2514 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2515 | NEED_DTPMOD | NEED_DTPREL))
2516 {
2517 if (!got)
2518 {
2519 got = get_got (abfd, info, ia64_info);
2520 if (!got)
2521 return FALSE;
2522 }
2523 if (need_entry & NEED_GOT)
2524 dyn_i->want_got = 1;
2525 if (need_entry & NEED_GOTX)
2526 dyn_i->want_gotx = 1;
2527 if (need_entry & NEED_TPREL)
2528 dyn_i->want_tprel = 1;
2529 if (need_entry & NEED_DTPMOD)
2530 dyn_i->want_dtpmod = 1;
2531 if (need_entry & NEED_DTPREL)
2532 dyn_i->want_dtprel = 1;
2533 }
2534 if (need_entry & NEED_FPTR)
2535 {
2536 if (!fptr)
2537 {
2538 fptr = get_fptr (abfd, info, ia64_info);
2539 if (!fptr)
2540 return FALSE;
2541 }
2542
2543 /* FPTRs for shared libraries are allocated by the dynamic
2544 linker. Make sure this local symbol will appear in the
2545 dynamic symbol table. */
2546 if (!h && bfd_link_pic (info))
2547 {
2548 if (! (bfd_elf_link_record_local_dynamic_symbol
2549 (info, abfd, (long) r_symndx)))
2550 return FALSE;
2551 }
2552
2553 dyn_i->want_fptr = 1;
2554 }
2555 if (need_entry & NEED_LTOFF_FPTR)
2556 dyn_i->want_ltoff_fptr = 1;
2557 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2558 {
2559 if (!ia64_info->root.dynobj)
2560 ia64_info->root.dynobj = abfd;
2561 h->needs_plt = 1;
2562 dyn_i->want_plt = 1;
2563 }
2564 if (need_entry & NEED_FULL_PLT)
2565 dyn_i->want_plt2 = 1;
2566 if (need_entry & NEED_PLTOFF)
2567 {
2568 /* This is needed here, in case @pltoff is used in a non-shared
2569 link. */
2570 if (!pltoff)
2571 {
2572 pltoff = get_pltoff (abfd, info, ia64_info);
2573 if (!pltoff)
2574 return FALSE;
2575 }
2576
2577 dyn_i->want_pltoff = 1;
2578 }
2579 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2580 {
2581 if (!srel)
2582 {
2583 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2584 if (!srel)
2585 return FALSE;
2586 }
2587 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2588 (sec->flags & SEC_READONLY) != 0))
2589 return FALSE;
2590 }
2591 }
2592
2593 return TRUE;
2594 }
2595
2596 /* For cleanliness, and potentially faster dynamic loading, allocate
2597 external GOT entries first. */
2598
2599 static bfd_boolean
2600 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2601 void * data)
2602 {
2603 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2604
2605 if ((dyn_i->want_got || dyn_i->want_gotx)
2606 && ! dyn_i->want_fptr
2607 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2608 {
2609 dyn_i->got_offset = x->ofs;
2610 x->ofs += 8;
2611 }
2612 if (dyn_i->want_tprel)
2613 {
2614 dyn_i->tprel_offset = x->ofs;
2615 x->ofs += 8;
2616 }
2617 if (dyn_i->want_dtpmod)
2618 {
2619 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2620 {
2621 dyn_i->dtpmod_offset = x->ofs;
2622 x->ofs += 8;
2623 }
2624 else
2625 {
2626 struct elfNN_ia64_link_hash_table *ia64_info;
2627
2628 ia64_info = elfNN_ia64_hash_table (x->info);
2629 if (ia64_info == NULL)
2630 return FALSE;
2631
2632 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2633 {
2634 ia64_info->self_dtpmod_offset = x->ofs;
2635 x->ofs += 8;
2636 }
2637 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2638 }
2639 }
2640 if (dyn_i->want_dtprel)
2641 {
2642 dyn_i->dtprel_offset = x->ofs;
2643 x->ofs += 8;
2644 }
2645 return TRUE;
2646 }
2647
2648 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2649
2650 static bfd_boolean
2651 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2652 void * data)
2653 {
2654 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2655
2656 if (dyn_i->want_got
2657 && dyn_i->want_fptr
2658 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2659 {
2660 dyn_i->got_offset = x->ofs;
2661 x->ofs += 8;
2662 }
2663 return TRUE;
2664 }
2665
2666 /* Lastly, allocate all the GOT entries for local data. */
2667
2668 static bfd_boolean
2669 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2670 void * data)
2671 {
2672 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2673
2674 if ((dyn_i->want_got || dyn_i->want_gotx)
2675 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2676 {
2677 dyn_i->got_offset = x->ofs;
2678 x->ofs += 8;
2679 }
2680 return TRUE;
2681 }
2682
2683 /* Search for the index of a global symbol in it's defining object file. */
2684
2685 static long
2686 global_sym_index (struct elf_link_hash_entry *h)
2687 {
2688 struct elf_link_hash_entry **p;
2689 bfd *obj;
2690
2691 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2692 || h->root.type == bfd_link_hash_defweak);
2693
2694 obj = h->root.u.def.section->owner;
2695 for (p = elf_sym_hashes (obj); *p != h; ++p)
2696 continue;
2697
2698 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2699 }
2700
2701 /* Allocate function descriptors. We can do these for every function
2702 in a main executable that is not exported. */
2703
2704 static bfd_boolean
2705 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2706 {
2707 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2708
2709 if (dyn_i->want_fptr)
2710 {
2711 struct elf_link_hash_entry *h = dyn_i->h;
2712
2713 if (h)
2714 while (h->root.type == bfd_link_hash_indirect
2715 || h->root.type == bfd_link_hash_warning)
2716 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2717
2718 if (!bfd_link_executable (x->info)
2719 && (!h
2720 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2721 || (h->root.type != bfd_link_hash_undefweak
2722 && h->root.type != bfd_link_hash_undefined)))
2723 {
2724 if (h && h->dynindx == -1)
2725 {
2726 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2727 || (h->root.type == bfd_link_hash_defweak));
2728
2729 if (!bfd_elf_link_record_local_dynamic_symbol
2730 (x->info, h->root.u.def.section->owner,
2731 global_sym_index (h)))
2732 return FALSE;
2733 }
2734
2735 dyn_i->want_fptr = 0;
2736 }
2737 else if (h == NULL || h->dynindx == -1)
2738 {
2739 dyn_i->fptr_offset = x->ofs;
2740 x->ofs += 16;
2741 }
2742 else
2743 dyn_i->want_fptr = 0;
2744 }
2745 return TRUE;
2746 }
2747
2748 /* Allocate all the minimal PLT entries. */
2749
2750 static bfd_boolean
2751 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2752 void * data)
2753 {
2754 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2755
2756 if (dyn_i->want_plt)
2757 {
2758 struct elf_link_hash_entry *h = dyn_i->h;
2759
2760 if (h)
2761 while (h->root.type == bfd_link_hash_indirect
2762 || h->root.type == bfd_link_hash_warning)
2763 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2764
2765 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2766 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2767 {
2768 bfd_size_type offset = x->ofs;
2769 if (offset == 0)
2770 offset = PLT_HEADER_SIZE;
2771 dyn_i->plt_offset = offset;
2772 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2773
2774 dyn_i->want_pltoff = 1;
2775 }
2776 else
2777 {
2778 dyn_i->want_plt = 0;
2779 dyn_i->want_plt2 = 0;
2780 }
2781 }
2782 return TRUE;
2783 }
2784
2785 /* Allocate all the full PLT entries. */
2786
2787 static bfd_boolean
2788 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2789 void * data)
2790 {
2791 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2792
2793 if (dyn_i->want_plt2)
2794 {
2795 struct elf_link_hash_entry *h = dyn_i->h;
2796 bfd_size_type ofs = x->ofs;
2797
2798 dyn_i->plt2_offset = ofs;
2799 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2800
2801 while (h->root.type == bfd_link_hash_indirect
2802 || h->root.type == bfd_link_hash_warning)
2803 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2804 dyn_i->h->plt.offset = ofs;
2805 }
2806 return TRUE;
2807 }
2808
2809 /* Allocate all the PLTOFF entries requested by relocations and
2810 plt entries. We can't share space with allocated FPTR entries,
2811 because the latter are not necessarily addressable by the GP.
2812 ??? Relaxation might be able to determine that they are. */
2813
2814 static bfd_boolean
2815 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2816 void * data)
2817 {
2818 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2819
2820 if (dyn_i->want_pltoff)
2821 {
2822 dyn_i->pltoff_offset = x->ofs;
2823 x->ofs += 16;
2824 }
2825 return TRUE;
2826 }
2827
2828 /* Allocate dynamic relocations for those symbols that turned out
2829 to be dynamic. */
2830
2831 static bfd_boolean
2832 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2833 void * data)
2834 {
2835 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2836 struct elfNN_ia64_link_hash_table *ia64_info;
2837 struct elfNN_ia64_dyn_reloc_entry *rent;
2838 bfd_boolean dynamic_symbol, shared, resolved_zero;
2839
2840 ia64_info = elfNN_ia64_hash_table (x->info);
2841 if (ia64_info == NULL)
2842 return FALSE;
2843
2844 /* Note that this can't be used in relation to FPTR relocs below. */
2845 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2846
2847 shared = bfd_link_pic (x->info);
2848 resolved_zero = (dyn_i->h
2849 && ELF_ST_VISIBILITY (dyn_i->h->other)
2850 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2851
2852 /* Take care of the GOT and PLT relocations. */
2853
2854 if ((!resolved_zero
2855 && (dynamic_symbol || shared)
2856 && (dyn_i->want_got || dyn_i->want_gotx))
2857 || (dyn_i->want_ltoff_fptr
2858 && dyn_i->h
2859 && dyn_i->h->dynindx != -1))
2860 {
2861 if (!dyn_i->want_ltoff_fptr
2862 || !bfd_link_pie (x->info)
2863 || dyn_i->h == NULL
2864 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2865 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2866 }
2867 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2868 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2869 if (dynamic_symbol && dyn_i->want_dtpmod)
2870 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2871 if (dynamic_symbol && dyn_i->want_dtprel)
2872 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2873
2874 if (x->only_got)
2875 return TRUE;
2876
2877 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2878 {
2879 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2880 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2881 }
2882
2883 if (!resolved_zero && dyn_i->want_pltoff)
2884 {
2885 bfd_size_type t = 0;
2886
2887 /* Dynamic symbols get one IPLT relocation. Local symbols in
2888 shared libraries get two REL relocations. Local symbols in
2889 main applications get nothing. */
2890 if (dynamic_symbol)
2891 t = sizeof (ElfNN_External_Rela);
2892 else if (shared)
2893 t = 2 * sizeof (ElfNN_External_Rela);
2894
2895 ia64_info->rel_pltoff_sec->size += t;
2896 }
2897
2898 /* Take care of the normal data relocations. */
2899
2900 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2901 {
2902 int count = rent->count;
2903
2904 switch (rent->type)
2905 {
2906 case R_IA64_FPTR32LSB:
2907 case R_IA64_FPTR64LSB:
2908 /* Allocate one iff !want_fptr and not PIE, which by this point
2909 will be true only if we're actually allocating one statically
2910 in the main executable. Position independent executables
2911 need a relative reloc. */
2912 if (dyn_i->want_fptr && !bfd_link_pie (x->info))
2913 continue;
2914 break;
2915 case R_IA64_PCREL32LSB:
2916 case R_IA64_PCREL64LSB:
2917 if (!dynamic_symbol)
2918 continue;
2919 break;
2920 case R_IA64_DIR32LSB:
2921 case R_IA64_DIR64LSB:
2922 if (!dynamic_symbol && !shared)
2923 continue;
2924 break;
2925 case R_IA64_IPLTLSB:
2926 if (!dynamic_symbol && !shared)
2927 continue;
2928 /* Use two REL relocations for IPLT relocations
2929 against local symbols. */
2930 if (!dynamic_symbol)
2931 count *= 2;
2932 break;
2933 case R_IA64_DTPREL32LSB:
2934 case R_IA64_TPREL64LSB:
2935 case R_IA64_DTPREL64LSB:
2936 case R_IA64_DTPMOD64LSB:
2937 break;
2938 default:
2939 abort ();
2940 }
2941 if (rent->reltext)
2942 ia64_info->reltext = 1;
2943 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2944 }
2945
2946 return TRUE;
2947 }
2948
2949 static bfd_boolean
2950 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2951 struct elf_link_hash_entry *h)
2952 {
2953 /* ??? Undefined symbols with PLT entries should be re-defined
2954 to be the PLT entry. */
2955
2956 /* If this is a weak symbol, and there is a real definition, the
2957 processor independent code will have arranged for us to see the
2958 real definition first, and we can just use the same value. */
2959 if (h->u.weakdef != NULL)
2960 {
2961 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2962 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2963 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2964 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2965 return TRUE;
2966 }
2967
2968 /* If this is a reference to a symbol defined by a dynamic object which
2969 is not a function, we might allocate the symbol in our .dynbss section
2970 and allocate a COPY dynamic relocation.
2971
2972 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2973 of hackery. */
2974
2975 return TRUE;
2976 }
2977
2978 static bfd_boolean
2979 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2980 struct bfd_link_info *info)
2981 {
2982 struct elfNN_ia64_allocate_data data;
2983 struct elfNN_ia64_link_hash_table *ia64_info;
2984 asection *sec;
2985 bfd *dynobj;
2986 bfd_boolean relplt = FALSE;
2987
2988 ia64_info = elfNN_ia64_hash_table (info);
2989 if (ia64_info == NULL)
2990 return FALSE;
2991 dynobj = ia64_info->root.dynobj;
2992 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2993 BFD_ASSERT(dynobj != NULL);
2994 data.info = info;
2995
2996 /* Set the contents of the .interp section to the interpreter. */
2997 if (ia64_info->root.dynamic_sections_created
2998 && bfd_link_executable (info) && !info->nointerp)
2999 {
3000 sec = bfd_get_linker_section (dynobj, ".interp");
3001 BFD_ASSERT (sec != NULL);
3002 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3003 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3004 }
3005
3006 /* Allocate the GOT entries. */
3007
3008 if (ia64_info->root.sgot)
3009 {
3010 data.ofs = 0;
3011 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3012 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3013 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3014 ia64_info->root.sgot->size = data.ofs;
3015 }
3016
3017 /* Allocate the FPTR entries. */
3018
3019 if (ia64_info->fptr_sec)
3020 {
3021 data.ofs = 0;
3022 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3023 ia64_info->fptr_sec->size = data.ofs;
3024 }
3025
3026 /* Now that we've seen all of the input files, we can decide which
3027 symbols need plt entries. Allocate the minimal PLT entries first.
3028 We do this even though dynamic_sections_created may be FALSE, because
3029 this has the side-effect of clearing want_plt and want_plt2. */
3030
3031 data.ofs = 0;
3032 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3033
3034 ia64_info->minplt_entries = 0;
3035 if (data.ofs)
3036 {
3037 ia64_info->minplt_entries
3038 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3039 }
3040
3041 /* Align the pointer for the plt2 entries. */
3042 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3043
3044 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3045 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3046 {
3047 /* FIXME: we always reserve the memory for dynamic linker even if
3048 there are no PLT entries since dynamic linker may assume the
3049 reserved memory always exists. */
3050
3051 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3052
3053 ia64_info->root.splt->size = data.ofs;
3054
3055 /* If we've got a .plt, we need some extra memory for the dynamic
3056 linker. We stuff these in .got.plt. */
3057 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
3058 }
3059
3060 /* Allocate the PLTOFF entries. */
3061
3062 if (ia64_info->pltoff_sec)
3063 {
3064 data.ofs = 0;
3065 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3066 ia64_info->pltoff_sec->size = data.ofs;
3067 }
3068
3069 if (ia64_info->root.dynamic_sections_created)
3070 {
3071 /* Allocate space for the dynamic relocations that turned out to be
3072 required. */
3073
3074 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3075 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3076 data.only_got = FALSE;
3077 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3078 }
3079
3080 /* We have now determined the sizes of the various dynamic sections.
3081 Allocate memory for them. */
3082 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3083 {
3084 bfd_boolean strip;
3085
3086 if (!(sec->flags & SEC_LINKER_CREATED))
3087 continue;
3088
3089 /* If we don't need this section, strip it from the output file.
3090 There were several sections primarily related to dynamic
3091 linking that must be create before the linker maps input
3092 sections to output sections. The linker does that before
3093 bfd_elf_size_dynamic_sections is called, and it is that
3094 function which decides whether anything needs to go into
3095 these sections. */
3096
3097 strip = (sec->size == 0);
3098
3099 if (sec == ia64_info->root.sgot)
3100 strip = FALSE;
3101 else if (sec == ia64_info->root.srelgot)
3102 {
3103 if (strip)
3104 ia64_info->root.srelgot = NULL;
3105 else
3106 /* We use the reloc_count field as a counter if we need to
3107 copy relocs into the output file. */
3108 sec->reloc_count = 0;
3109 }
3110 else if (sec == ia64_info->fptr_sec)
3111 {
3112 if (strip)
3113 ia64_info->fptr_sec = NULL;
3114 }
3115 else if (sec == ia64_info->rel_fptr_sec)
3116 {
3117 if (strip)
3118 ia64_info->rel_fptr_sec = NULL;
3119 else
3120 /* We use the reloc_count field as a counter if we need to
3121 copy relocs into the output file. */
3122 sec->reloc_count = 0;
3123 }
3124 else if (sec == ia64_info->root.splt)
3125 {
3126 if (strip)
3127 ia64_info->root.splt = NULL;
3128 }
3129 else if (sec == ia64_info->pltoff_sec)
3130 {
3131 if (strip)
3132 ia64_info->pltoff_sec = NULL;
3133 }
3134 else if (sec == ia64_info->rel_pltoff_sec)
3135 {
3136 if (strip)
3137 ia64_info->rel_pltoff_sec = NULL;
3138 else
3139 {
3140 relplt = TRUE;
3141 /* We use the reloc_count field as a counter if we need to
3142 copy relocs into the output file. */
3143 sec->reloc_count = 0;
3144 }
3145 }
3146 else
3147 {
3148 const char *name;
3149
3150 /* It's OK to base decisions on the section name, because none
3151 of the dynobj section names depend upon the input files. */
3152 name = bfd_get_section_name (dynobj, sec);
3153
3154 if (strcmp (name, ".got.plt") == 0)
3155 strip = FALSE;
3156 else if (CONST_STRNEQ (name, ".rel"))
3157 {
3158 if (!strip)
3159 {
3160 /* We use the reloc_count field as a counter if we need to
3161 copy relocs into the output file. */
3162 sec->reloc_count = 0;
3163 }
3164 }
3165 else
3166 continue;
3167 }
3168
3169 if (strip)
3170 sec->flags |= SEC_EXCLUDE;
3171 else
3172 {
3173 /* Allocate memory for the section contents. */
3174 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3175 if (sec->contents == NULL && sec->size != 0)
3176 return FALSE;
3177 }
3178 }
3179
3180 if (ia64_info->root.dynamic_sections_created)
3181 {
3182 /* Add some entries to the .dynamic section. We fill in the values
3183 later (in finish_dynamic_sections) but we must add the entries now
3184 so that we get the correct size for the .dynamic section. */
3185
3186 if (bfd_link_executable (info))
3187 {
3188 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3189 by the debugger. */
3190 #define add_dynamic_entry(TAG, VAL) \
3191 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3192
3193 if (!add_dynamic_entry (DT_DEBUG, 0))
3194 return FALSE;
3195 }
3196
3197 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3198 return FALSE;
3199 if (!add_dynamic_entry (DT_PLTGOT, 0))
3200 return FALSE;
3201
3202 if (relplt)
3203 {
3204 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3205 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3206 || !add_dynamic_entry (DT_JMPREL, 0))
3207 return FALSE;
3208 }
3209
3210 if (!add_dynamic_entry (DT_RELA, 0)
3211 || !add_dynamic_entry (DT_RELASZ, 0)
3212 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3213 return FALSE;
3214
3215 if (ia64_info->reltext)
3216 {
3217 if (!add_dynamic_entry (DT_TEXTREL, 0))
3218 return FALSE;
3219 info->flags |= DF_TEXTREL;
3220 }
3221 }
3222
3223 /* ??? Perhaps force __gp local. */
3224
3225 return TRUE;
3226 }
3227
3228 static void
3229 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3230 asection *sec, asection *srel,
3231 bfd_vma offset, unsigned int type,
3232 long dynindx, bfd_vma addend)
3233 {
3234 Elf_Internal_Rela outrel;
3235 bfd_byte *loc;
3236
3237 BFD_ASSERT (dynindx != -1);
3238 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3239 outrel.r_addend = addend;
3240 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3241 if (outrel.r_offset >= (bfd_vma) -2)
3242 {
3243 /* Run for the hills. We shouldn't be outputting a relocation
3244 for this. So do what everyone else does and output a no-op. */
3245 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3246 outrel.r_addend = 0;
3247 outrel.r_offset = 0;
3248 }
3249 else
3250 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3251
3252 loc = srel->contents;
3253 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3254 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3255 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3256 }
3257
3258 /* Store an entry for target address TARGET_ADDR in the linkage table
3259 and return the gp-relative address of the linkage table entry. */
3260
3261 static bfd_vma
3262 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3263 struct elfNN_ia64_dyn_sym_info *dyn_i,
3264 long dynindx, bfd_vma addend, bfd_vma value,
3265 unsigned int dyn_r_type)
3266 {
3267 struct elfNN_ia64_link_hash_table *ia64_info;
3268 asection *got_sec;
3269 bfd_boolean done;
3270 bfd_vma got_offset;
3271
3272 ia64_info = elfNN_ia64_hash_table (info);
3273 if (ia64_info == NULL)
3274 return 0;
3275
3276 got_sec = ia64_info->root.sgot;
3277
3278 switch (dyn_r_type)
3279 {
3280 case R_IA64_TPREL64LSB:
3281 done = dyn_i->tprel_done;
3282 dyn_i->tprel_done = TRUE;
3283 got_offset = dyn_i->tprel_offset;
3284 break;
3285 case R_IA64_DTPMOD64LSB:
3286 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3287 {
3288 done = dyn_i->dtpmod_done;
3289 dyn_i->dtpmod_done = TRUE;
3290 }
3291 else
3292 {
3293 done = ia64_info->self_dtpmod_done;
3294 ia64_info->self_dtpmod_done = TRUE;
3295 dynindx = 0;
3296 }
3297 got_offset = dyn_i->dtpmod_offset;
3298 break;
3299 case R_IA64_DTPREL32LSB:
3300 case R_IA64_DTPREL64LSB:
3301 done = dyn_i->dtprel_done;
3302 dyn_i->dtprel_done = TRUE;
3303 got_offset = dyn_i->dtprel_offset;
3304 break;
3305 default:
3306 done = dyn_i->got_done;
3307 dyn_i->got_done = TRUE;
3308 got_offset = dyn_i->got_offset;
3309 break;
3310 }
3311
3312 BFD_ASSERT ((got_offset & 7) == 0);
3313
3314 if (! done)
3315 {
3316 /* Store the target address in the linkage table entry. */
3317 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3318
3319 /* Install a dynamic relocation if needed. */
3320 if (((bfd_link_pic (info)
3321 && (!dyn_i->h
3322 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3323 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3324 && dyn_r_type != R_IA64_DTPREL32LSB
3325 && dyn_r_type != R_IA64_DTPREL64LSB)
3326 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3327 || (dynindx != -1
3328 && (dyn_r_type == R_IA64_FPTR32LSB
3329 || dyn_r_type == R_IA64_FPTR64LSB)))
3330 && (!dyn_i->want_ltoff_fptr
3331 || !bfd_link_pie (info)
3332 || !dyn_i->h
3333 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3334 {
3335 if (dynindx == -1
3336 && dyn_r_type != R_IA64_TPREL64LSB
3337 && dyn_r_type != R_IA64_DTPMOD64LSB
3338 && dyn_r_type != R_IA64_DTPREL32LSB
3339 && dyn_r_type != R_IA64_DTPREL64LSB)
3340 {
3341 dyn_r_type = R_IA64_RELNNLSB;
3342 dynindx = 0;
3343 addend = value;
3344 }
3345
3346 if (bfd_big_endian (abfd))
3347 {
3348 switch (dyn_r_type)
3349 {
3350 case R_IA64_REL32LSB:
3351 dyn_r_type = R_IA64_REL32MSB;
3352 break;
3353 case R_IA64_DIR32LSB:
3354 dyn_r_type = R_IA64_DIR32MSB;
3355 break;
3356 case R_IA64_FPTR32LSB:
3357 dyn_r_type = R_IA64_FPTR32MSB;
3358 break;
3359 case R_IA64_DTPREL32LSB:
3360 dyn_r_type = R_IA64_DTPREL32MSB;
3361 break;
3362 case R_IA64_REL64LSB:
3363 dyn_r_type = R_IA64_REL64MSB;
3364 break;
3365 case R_IA64_DIR64LSB:
3366 dyn_r_type = R_IA64_DIR64MSB;
3367 break;
3368 case R_IA64_FPTR64LSB:
3369 dyn_r_type = R_IA64_FPTR64MSB;
3370 break;
3371 case R_IA64_TPREL64LSB:
3372 dyn_r_type = R_IA64_TPREL64MSB;
3373 break;
3374 case R_IA64_DTPMOD64LSB:
3375 dyn_r_type = R_IA64_DTPMOD64MSB;
3376 break;
3377 case R_IA64_DTPREL64LSB:
3378 dyn_r_type = R_IA64_DTPREL64MSB;
3379 break;
3380 default:
3381 BFD_ASSERT (FALSE);
3382 break;
3383 }
3384 }
3385
3386 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3387 ia64_info->root.srelgot,
3388 got_offset, dyn_r_type,
3389 dynindx, addend);
3390 }
3391 }
3392
3393 /* Return the address of the linkage table entry. */
3394 value = (got_sec->output_section->vma
3395 + got_sec->output_offset
3396 + got_offset);
3397
3398 return value;
3399 }
3400
3401 /* Fill in a function descriptor consisting of the function's code
3402 address and its global pointer. Return the descriptor's address. */
3403
3404 static bfd_vma
3405 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3406 struct elfNN_ia64_dyn_sym_info *dyn_i,
3407 bfd_vma value)
3408 {
3409 struct elfNN_ia64_link_hash_table *ia64_info;
3410 asection *fptr_sec;
3411
3412 ia64_info = elfNN_ia64_hash_table (info);
3413 if (ia64_info == NULL)
3414 return 0;
3415
3416 fptr_sec = ia64_info->fptr_sec;
3417
3418 if (!dyn_i->fptr_done)
3419 {
3420 dyn_i->fptr_done = 1;
3421
3422 /* Fill in the function descriptor. */
3423 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3424 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3425 fptr_sec->contents + dyn_i->fptr_offset + 8);
3426 if (ia64_info->rel_fptr_sec)
3427 {
3428 Elf_Internal_Rela outrel;
3429 bfd_byte *loc;
3430
3431 if (bfd_little_endian (abfd))
3432 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3433 else
3434 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3435 outrel.r_addend = value;
3436 outrel.r_offset = (fptr_sec->output_section->vma
3437 + fptr_sec->output_offset
3438 + dyn_i->fptr_offset);
3439 loc = ia64_info->rel_fptr_sec->contents;
3440 loc += ia64_info->rel_fptr_sec->reloc_count++
3441 * sizeof (ElfNN_External_Rela);
3442 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3443 }
3444 }
3445
3446 /* Return the descriptor's address. */
3447 value = (fptr_sec->output_section->vma
3448 + fptr_sec->output_offset
3449 + dyn_i->fptr_offset);
3450
3451 return value;
3452 }
3453
3454 /* Fill in a PLTOFF entry consisting of the function's code address
3455 and its global pointer. Return the descriptor's address. */
3456
3457 static bfd_vma
3458 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3459 struct elfNN_ia64_dyn_sym_info *dyn_i,
3460 bfd_vma value, bfd_boolean is_plt)
3461 {
3462 struct elfNN_ia64_link_hash_table *ia64_info;
3463 asection *pltoff_sec;
3464
3465 ia64_info = elfNN_ia64_hash_table (info);
3466 if (ia64_info == NULL)
3467 return 0;
3468
3469 pltoff_sec = ia64_info->pltoff_sec;
3470
3471 /* Don't do anything if this symbol uses a real PLT entry. In
3472 that case, we'll fill this in during finish_dynamic_symbol. */
3473 if ((! dyn_i->want_plt || is_plt)
3474 && !dyn_i->pltoff_done)
3475 {
3476 bfd_vma gp = _bfd_get_gp_value (abfd);
3477
3478 /* Fill in the function descriptor. */
3479 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3480 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3481
3482 /* Install dynamic relocations if needed. */
3483 if (!is_plt
3484 && bfd_link_pic (info)
3485 && (!dyn_i->h
3486 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3487 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3488 {
3489 unsigned int dyn_r_type;
3490
3491 if (bfd_big_endian (abfd))
3492 dyn_r_type = R_IA64_RELNNMSB;
3493 else
3494 dyn_r_type = R_IA64_RELNNLSB;
3495
3496 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3497 ia64_info->rel_pltoff_sec,
3498 dyn_i->pltoff_offset,
3499 dyn_r_type, 0, value);
3500 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3501 ia64_info->rel_pltoff_sec,
3502 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3503 dyn_r_type, 0, gp);
3504 }
3505
3506 dyn_i->pltoff_done = 1;
3507 }
3508
3509 /* Return the descriptor's address. */
3510 value = (pltoff_sec->output_section->vma
3511 + pltoff_sec->output_offset
3512 + dyn_i->pltoff_offset);
3513
3514 return value;
3515 }
3516
3517 /* Return the base VMA address which should be subtracted from real addresses
3518 when resolving @tprel() relocation.
3519 Main program TLS (whose template starts at PT_TLS p_vaddr)
3520 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3521
3522 static bfd_vma
3523 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3524 {
3525 asection *tls_sec = elf_hash_table (info)->tls_sec;
3526 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3527 tls_sec->alignment_power);
3528 }
3529
3530 /* Return the base VMA address which should be subtracted from real addresses
3531 when resolving @dtprel() relocation.
3532 This is PT_TLS segment p_vaddr. */
3533
3534 static bfd_vma
3535 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3536 {
3537 return elf_hash_table (info)->tls_sec->vma;
3538 }
3539
3540 /* Called through qsort to sort the .IA_64.unwind section during a
3541 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3542 to the output bfd so we can do proper endianness frobbing. */
3543
3544 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3545
3546 static int
3547 elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3548 {
3549 bfd_vma av, bv;
3550
3551 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3552 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3553
3554 return (av < bv ? -1 : av > bv ? 1 : 0);
3555 }
3556
3557 /* Make sure we've got ourselves a nice fat __gp value. */
3558 static bfd_boolean
3559 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3560 {
3561 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3562 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3563 struct elf_link_hash_entry *gp;
3564 bfd_vma gp_val;
3565 asection *os;
3566 struct elfNN_ia64_link_hash_table *ia64_info;
3567
3568 ia64_info = elfNN_ia64_hash_table (info);
3569 if (ia64_info == NULL)
3570 return FALSE;
3571
3572 /* Find the min and max vma of all sections marked short. Also collect
3573 min and max vma of any type, for use in selecting a nice gp. */
3574 for (os = abfd->sections; os ; os = os->next)
3575 {
3576 bfd_vma lo, hi;
3577
3578 if ((os->flags & SEC_ALLOC) == 0)
3579 continue;
3580
3581 lo = os->vma;
3582 /* When this function is called from elfNN_ia64_final_link
3583 the correct value to use is os->size. When called from
3584 elfNN_ia64_relax_section we are in the middle of section
3585 sizing; some sections will already have os->size set, others
3586 will have os->size zero and os->rawsize the previous size. */
3587 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3588 if (hi < lo)
3589 hi = (bfd_vma) -1;
3590
3591 if (min_vma > lo)
3592 min_vma = lo;
3593 if (max_vma < hi)
3594 max_vma = hi;
3595 if (os->flags & SEC_SMALL_DATA)
3596 {
3597 if (min_short_vma > lo)
3598 min_short_vma = lo;
3599 if (max_short_vma < hi)
3600 max_short_vma = hi;
3601 }
3602 }
3603
3604 if (ia64_info->min_short_sec)
3605 {
3606 if (min_short_vma
3607 > (ia64_info->min_short_sec->vma
3608 + ia64_info->min_short_offset))
3609 min_short_vma = (ia64_info->min_short_sec->vma
3610 + ia64_info->min_short_offset);
3611 if (max_short_vma
3612 < (ia64_info->max_short_sec->vma
3613 + ia64_info->max_short_offset))
3614 max_short_vma = (ia64_info->max_short_sec->vma
3615 + ia64_info->max_short_offset);
3616 }
3617
3618 /* See if the user wants to force a value. */
3619 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3620 FALSE, FALSE);
3621
3622 if (gp
3623 && (gp->root.type == bfd_link_hash_defined
3624 || gp->root.type == bfd_link_hash_defweak))
3625 {
3626 asection *gp_sec = gp->root.u.def.section;
3627 gp_val = (gp->root.u.def.value
3628 + gp_sec->output_section->vma
3629 + gp_sec->output_offset);
3630 }
3631 else
3632 {
3633 /* Pick a sensible value. */
3634
3635 if (ia64_info->min_short_sec)
3636 {
3637 bfd_vma short_range = max_short_vma - min_short_vma;
3638
3639 /* If min_short_sec is set, pick one in the middle bewteen
3640 min_short_vma and max_short_vma. */
3641 if (short_range >= 0x400000)
3642 goto overflow;
3643 gp_val = min_short_vma + short_range / 2;
3644 }
3645 else
3646 {
3647 asection *got_sec = ia64_info->root.sgot;
3648
3649 /* Start with just the address of the .got. */
3650 if (got_sec)
3651 gp_val = got_sec->output_section->vma;
3652 else if (max_short_vma != 0)
3653 gp_val = min_short_vma;
3654 else if (max_vma - min_vma < 0x200000)
3655 gp_val = min_vma;
3656 else
3657 gp_val = max_vma - 0x200000 + 8;
3658 }
3659
3660 /* If it is possible to address the entire image, but we
3661 don't with the choice above, adjust. */
3662 if (max_vma - min_vma < 0x400000
3663 && (max_vma - gp_val >= 0x200000
3664 || gp_val - min_vma > 0x200000))
3665 gp_val = min_vma + 0x200000;
3666 else if (max_short_vma != 0)
3667 {
3668 /* If we don't cover all the short data, adjust. */
3669 if (max_short_vma - gp_val >= 0x200000)
3670 gp_val = min_short_vma + 0x200000;
3671
3672 /* If we're addressing stuff past the end, adjust back. */
3673 if (gp_val > max_vma)
3674 gp_val = max_vma - 0x200000 + 8;
3675 }
3676 }
3677
3678 /* Validate whether all SHF_IA_64_SHORT sections are within
3679 range of the chosen GP. */
3680
3681 if (max_short_vma != 0)
3682 {
3683 if (max_short_vma - min_short_vma >= 0x400000)
3684 {
3685 overflow:
3686 _bfd_error_handler
3687 /* xgettext:c-format */
3688 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3689 bfd_get_filename (abfd),
3690 (unsigned long) (max_short_vma - min_short_vma));
3691 return FALSE;
3692 }
3693 else if ((gp_val > min_short_vma
3694 && gp_val - min_short_vma > 0x200000)
3695 || (gp_val < max_short_vma
3696 && max_short_vma - gp_val >= 0x200000))
3697 {
3698 _bfd_error_handler
3699 (_("%s: __gp does not cover short data segment"),
3700 bfd_get_filename (abfd));
3701 return FALSE;
3702 }
3703 }
3704
3705 _bfd_set_gp_value (abfd, gp_val);
3706
3707 return TRUE;
3708 }
3709
3710 static bfd_boolean
3711 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3712 {
3713 struct elfNN_ia64_link_hash_table *ia64_info;
3714 asection *unwind_output_sec;
3715
3716 ia64_info = elfNN_ia64_hash_table (info);
3717 if (ia64_info == NULL)
3718 return FALSE;
3719
3720 /* Make sure we've got ourselves a nice fat __gp value. */
3721 if (!bfd_link_relocatable (info))
3722 {
3723 bfd_vma gp_val;
3724 struct elf_link_hash_entry *gp;
3725
3726 /* We assume after gp is set, section size will only decrease. We
3727 need to adjust gp for it. */
3728 _bfd_set_gp_value (abfd, 0);
3729 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3730 return FALSE;
3731 gp_val = _bfd_get_gp_value (abfd);
3732
3733 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3734 FALSE, FALSE);
3735 if (gp)
3736 {
3737 gp->root.type = bfd_link_hash_defined;
3738 gp->root.u.def.value = gp_val;
3739 gp->root.u.def.section = bfd_abs_section_ptr;
3740 }
3741 }
3742
3743 /* If we're producing a final executable, we need to sort the contents
3744 of the .IA_64.unwind section. Force this section to be relocated
3745 into memory rather than written immediately to the output file. */
3746 unwind_output_sec = NULL;
3747 if (!bfd_link_relocatable (info))
3748 {
3749 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3750 if (s)
3751 {
3752 unwind_output_sec = s->output_section;
3753 unwind_output_sec->contents
3754 = bfd_malloc (unwind_output_sec->size);
3755 if (unwind_output_sec->contents == NULL)
3756 return FALSE;
3757 }
3758 }
3759
3760 /* Invoke the regular ELF backend linker to do all the work. */
3761 if (!bfd_elf_final_link (abfd, info))
3762 return FALSE;
3763
3764 if (unwind_output_sec)
3765 {
3766 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3767 qsort (unwind_output_sec->contents,
3768 (size_t) (unwind_output_sec->size / 24),
3769 24,
3770 elfNN_ia64_unwind_entry_compare);
3771
3772 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3773 unwind_output_sec->contents, (bfd_vma) 0,
3774 unwind_output_sec->size))
3775 return FALSE;
3776 }
3777
3778 return TRUE;
3779 }
3780
3781 static bfd_boolean
3782 elfNN_ia64_relocate_section (bfd *output_bfd,
3783 struct bfd_link_info *info,
3784 bfd *input_bfd,
3785 asection *input_section,
3786 bfd_byte *contents,
3787 Elf_Internal_Rela *relocs,
3788 Elf_Internal_Sym *local_syms,
3789 asection **local_sections)
3790 {
3791 struct elfNN_ia64_link_hash_table *ia64_info;
3792 Elf_Internal_Shdr *symtab_hdr;
3793 Elf_Internal_Rela *rel;
3794 Elf_Internal_Rela *relend;
3795 asection *srel;
3796 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3797 bfd_vma gp_val;
3798
3799 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3800 ia64_info = elfNN_ia64_hash_table (info);
3801 if (ia64_info == NULL)
3802 return FALSE;
3803
3804 /* Infect various flags from the input section to the output section. */
3805 if (bfd_link_relocatable (info))
3806 {
3807 bfd_vma flags;
3808
3809 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3810 flags &= SHF_IA_64_NORECOV;
3811
3812 elf_section_data(input_section->output_section)
3813 ->this_hdr.sh_flags |= flags;
3814 }
3815
3816 gp_val = _bfd_get_gp_value (output_bfd);
3817 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3818
3819 rel = relocs;
3820 relend = relocs + input_section->reloc_count;
3821 for (; rel < relend; ++rel)
3822 {
3823 struct elf_link_hash_entry *h;
3824 struct elfNN_ia64_dyn_sym_info *dyn_i;
3825 bfd_reloc_status_type r;
3826 reloc_howto_type *howto;
3827 unsigned long r_symndx;
3828 Elf_Internal_Sym *sym;
3829 unsigned int r_type;
3830 bfd_vma value;
3831 asection *sym_sec;
3832 bfd_byte *hit_addr;
3833 bfd_boolean dynamic_symbol_p;
3834 bfd_boolean undef_weak_ref;
3835
3836 r_type = ELFNN_R_TYPE (rel->r_info);
3837 if (r_type > R_IA64_MAX_RELOC_CODE)
3838 {
3839 _bfd_error_handler
3840 /* xgettext:c-format */
3841 (_("%B: unknown relocation type %d"),
3842 input_bfd, (int) r_type);
3843 bfd_set_error (bfd_error_bad_value);
3844 ret_val = FALSE;
3845 continue;
3846 }
3847
3848 howto = ia64_elf_lookup_howto (r_type);
3849 r_symndx = ELFNN_R_SYM (rel->r_info);
3850 h = NULL;
3851 sym = NULL;
3852 sym_sec = NULL;
3853 undef_weak_ref = FALSE;
3854
3855 if (r_symndx < symtab_hdr->sh_info)
3856 {
3857 /* Reloc against local symbol. */
3858 asection *msec;
3859 sym = local_syms + r_symndx;
3860 sym_sec = local_sections[r_symndx];
3861 msec = sym_sec;
3862 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3863 if (!bfd_link_relocatable (info)
3864 && (sym_sec->flags & SEC_MERGE) != 0
3865 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3866 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3867 {
3868 struct elfNN_ia64_local_hash_entry *loc_h;
3869
3870 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3871 if (loc_h && ! loc_h->sec_merge_done)
3872 {
3873 struct elfNN_ia64_dyn_sym_info *dynent;
3874 unsigned int count;
3875
3876 for (count = loc_h->count, dynent = loc_h->info;
3877 count != 0;
3878 count--, dynent++)
3879 {
3880 msec = sym_sec;
3881 dynent->addend =
3882 _bfd_merged_section_offset (output_bfd, &msec,
3883 elf_section_data (msec)->
3884 sec_info,
3885 sym->st_value
3886 + dynent->addend);
3887 dynent->addend -= sym->st_value;
3888 dynent->addend += msec->output_section->vma
3889 + msec->output_offset
3890 - sym_sec->output_section->vma
3891 - sym_sec->output_offset;
3892 }
3893
3894 /* We may have introduced duplicated entries. We need
3895 to remove them properly. */
3896 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3897 if (count != loc_h->count)
3898 {
3899 loc_h->count = count;
3900 loc_h->sorted_count = count;
3901 }
3902
3903 loc_h->sec_merge_done = 1;
3904 }
3905 }
3906 }
3907 else
3908 {
3909 bfd_boolean unresolved_reloc;
3910 bfd_boolean warned, ignored;
3911 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3912
3913 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3914 r_symndx, symtab_hdr, sym_hashes,
3915 h, sym_sec, value,
3916 unresolved_reloc, warned, ignored);
3917
3918 if (h->root.type == bfd_link_hash_undefweak)
3919 undef_weak_ref = TRUE;
3920 else if (warned || (ignored && bfd_link_executable (info)))
3921 continue;
3922 }
3923
3924 if (sym_sec != NULL && discarded_section (sym_sec))
3925 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3926 rel, 1, relend, howto, 0, contents);
3927
3928 if (bfd_link_relocatable (info))
3929 continue;
3930
3931 hit_addr = contents + rel->r_offset;
3932 value += rel->r_addend;
3933 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3934
3935 switch (r_type)
3936 {
3937 case R_IA64_NONE:
3938 case R_IA64_LDXMOV:
3939 continue;
3940
3941 case R_IA64_IMM14:
3942 case R_IA64_IMM22:
3943 case R_IA64_IMM64:
3944 case R_IA64_DIR32MSB:
3945 case R_IA64_DIR32LSB:
3946 case R_IA64_DIR64MSB:
3947 case R_IA64_DIR64LSB:
3948 /* Install a dynamic relocation for this reloc. */
3949 if ((dynamic_symbol_p || bfd_link_pic (info))
3950 && r_symndx != STN_UNDEF
3951 && (input_section->flags & SEC_ALLOC) != 0)
3952 {
3953 unsigned int dyn_r_type;
3954 long dynindx;
3955 bfd_vma addend;
3956
3957 BFD_ASSERT (srel != NULL);
3958
3959 switch (r_type)
3960 {
3961 case R_IA64_IMM14:
3962 case R_IA64_IMM22:
3963 case R_IA64_IMM64:
3964 /* ??? People shouldn't be doing non-pic code in
3965 shared libraries nor dynamic executables. */
3966 _bfd_error_handler
3967 /* xgettext:c-format */
3968 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3969 input_bfd,
3970 h ? h->root.root.string
3971 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3972 sym_sec));
3973 ret_val = FALSE;
3974 continue;
3975
3976 default:
3977 break;
3978 }
3979
3980 /* If we don't need dynamic symbol lookup, find a
3981 matching RELATIVE relocation. */
3982 dyn_r_type = r_type;
3983 if (dynamic_symbol_p)
3984 {
3985 dynindx = h->dynindx;
3986 addend = rel->r_addend;
3987 value = 0;
3988 }
3989 else
3990 {
3991 switch (r_type)
3992 {
3993 case R_IA64_DIR32MSB:
3994 dyn_r_type = R_IA64_REL32MSB;
3995 break;
3996 case R_IA64_DIR32LSB:
3997 dyn_r_type = R_IA64_REL32LSB;
3998 break;
3999 case R_IA64_DIR64MSB:
4000 dyn_r_type = R_IA64_REL64MSB;
4001 break;
4002 case R_IA64_DIR64LSB:
4003 dyn_r_type = R_IA64_REL64LSB;
4004 break;
4005
4006 default:
4007 break;
4008 }
4009 dynindx = 0;
4010 addend = value;
4011 }
4012
4013 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4014 srel, rel->r_offset, dyn_r_type,
4015 dynindx, addend);
4016 }
4017 /* Fall through. */
4018
4019 case R_IA64_LTV32MSB:
4020 case R_IA64_LTV32LSB:
4021 case R_IA64_LTV64MSB:
4022 case R_IA64_LTV64LSB:
4023 r = ia64_elf_install_value (hit_addr, value, r_type);
4024 break;
4025
4026 case R_IA64_GPREL22:
4027 case R_IA64_GPREL64I:
4028 case R_IA64_GPREL32MSB:
4029 case R_IA64_GPREL32LSB:
4030 case R_IA64_GPREL64MSB:
4031 case R_IA64_GPREL64LSB:
4032 if (dynamic_symbol_p)
4033 {
4034 _bfd_error_handler
4035 /* xgettext:c-format */
4036 (_("%B: @gprel relocation against dynamic symbol %s"),
4037 input_bfd,
4038 h ? h->root.root.string
4039 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4040 sym_sec));
4041 ret_val = FALSE;
4042 continue;
4043 }
4044 value -= gp_val;
4045 r = ia64_elf_install_value (hit_addr, value, r_type);
4046 break;
4047
4048 case R_IA64_LTOFF22:
4049 case R_IA64_LTOFF22X:
4050 case R_IA64_LTOFF64I:
4051 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4052 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4053 rel->r_addend, value, R_IA64_DIRNNLSB);
4054 value -= gp_val;
4055 r = ia64_elf_install_value (hit_addr, value, r_type);
4056 break;
4057
4058 case R_IA64_PLTOFF22:
4059 case R_IA64_PLTOFF64I:
4060 case R_IA64_PLTOFF64MSB:
4061 case R_IA64_PLTOFF64LSB:
4062 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4063 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4064 value -= gp_val;
4065 r = ia64_elf_install_value (hit_addr, value, r_type);
4066 break;
4067
4068 case R_IA64_FPTR64I:
4069 case R_IA64_FPTR32MSB:
4070 case R_IA64_FPTR32LSB:
4071 case R_IA64_FPTR64MSB:
4072 case R_IA64_FPTR64LSB:
4073 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4074 if (dyn_i->want_fptr)
4075 {
4076 if (!undef_weak_ref)
4077 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4078 }
4079 if (!dyn_i->want_fptr || bfd_link_pie (info))
4080 {
4081 long dynindx;
4082 unsigned int dyn_r_type = r_type;
4083 bfd_vma addend = rel->r_addend;
4084
4085 /* Otherwise, we expect the dynamic linker to create
4086 the entry. */
4087
4088 if (dyn_i->want_fptr)
4089 {
4090 if (r_type == R_IA64_FPTR64I)
4091 {
4092 /* We can't represent this without a dynamic symbol.
4093 Adjust the relocation to be against an output
4094 section symbol, which are always present in the
4095 dynamic symbol table. */
4096 /* ??? People shouldn't be doing non-pic code in
4097 shared libraries. Hork. */
4098 _bfd_error_handler
4099 (_("%B: linking non-pic code in a position independent executable"),
4100 input_bfd);
4101 ret_val = FALSE;
4102 continue;
4103 }
4104 dynindx = 0;
4105 addend = value;
4106 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4107 }
4108 else if (h)
4109 {
4110 if (h->dynindx != -1)
4111 dynindx = h->dynindx;
4112 else
4113 dynindx = (_bfd_elf_link_lookup_local_dynindx
4114 (info, h->root.u.def.section->owner,
4115 global_sym_index (h)));
4116 value = 0;
4117 }
4118 else
4119 {
4120 dynindx = (_bfd_elf_link_lookup_local_dynindx
4121 (info, input_bfd, (long) r_symndx));
4122 value = 0;
4123 }
4124
4125 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4126 srel, rel->r_offset, dyn_r_type,
4127 dynindx, addend);
4128 }
4129
4130 r = ia64_elf_install_value (hit_addr, value, r_type);
4131 break;
4132
4133 case R_IA64_LTOFF_FPTR22:
4134 case R_IA64_LTOFF_FPTR64I:
4135 case R_IA64_LTOFF_FPTR32MSB:
4136 case R_IA64_LTOFF_FPTR32LSB:
4137 case R_IA64_LTOFF_FPTR64MSB:
4138 case R_IA64_LTOFF_FPTR64LSB:
4139 {
4140 long dynindx;
4141
4142 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4143 if (dyn_i->want_fptr)
4144 {
4145 BFD_ASSERT (h == NULL || h->dynindx == -1);
4146 if (!undef_weak_ref)
4147 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4148 dynindx = -1;
4149 }
4150 else
4151 {
4152 /* Otherwise, we expect the dynamic linker to create
4153 the entry. */
4154 if (h)
4155 {
4156 if (h->dynindx != -1)
4157 dynindx = h->dynindx;
4158 else
4159 dynindx = (_bfd_elf_link_lookup_local_dynindx
4160 (info, h->root.u.def.section->owner,
4161 global_sym_index (h)));
4162 }
4163 else
4164 dynindx = (_bfd_elf_link_lookup_local_dynindx
4165 (info, input_bfd, (long) r_symndx));
4166 value = 0;
4167 }
4168
4169 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4170 rel->r_addend, value, R_IA64_FPTRNNLSB);
4171 value -= gp_val;
4172 r = ia64_elf_install_value (hit_addr, value, r_type);
4173 }
4174 break;
4175
4176 case R_IA64_PCREL32MSB:
4177 case R_IA64_PCREL32LSB:
4178 case R_IA64_PCREL64MSB:
4179 case R_IA64_PCREL64LSB:
4180 /* Install a dynamic relocation for this reloc. */
4181 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4182 {
4183 BFD_ASSERT (srel != NULL);
4184
4185 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4186 srel, rel->r_offset, r_type,
4187 h->dynindx, rel->r_addend);
4188 }
4189 goto finish_pcrel;
4190
4191 case R_IA64_PCREL21B:
4192 case R_IA64_PCREL60B:
4193 /* We should have created a PLT entry for any dynamic symbol. */
4194 dyn_i = NULL;
4195 if (h)
4196 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4197
4198 if (dyn_i && dyn_i->want_plt2)
4199 {
4200 /* Should have caught this earlier. */
4201 BFD_ASSERT (rel->r_addend == 0);
4202
4203 value = (ia64_info->root.splt->output_section->vma
4204 + ia64_info->root.splt->output_offset
4205 + dyn_i->plt2_offset);
4206 }
4207 else
4208 {
4209 /* Since there's no PLT entry, Validate that this is
4210 locally defined. */
4211 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4212
4213 /* If the symbol is undef_weak, we shouldn't be trying
4214 to call it. There's every chance that we'd wind up
4215 with an out-of-range fixup here. Don't bother setting
4216 any value at all. */
4217 if (undef_weak_ref)
4218 continue;
4219 }
4220 goto finish_pcrel;
4221
4222 case R_IA64_PCREL21BI:
4223 case R_IA64_PCREL21F:
4224 case R_IA64_PCREL21M:
4225 case R_IA64_PCREL22:
4226 case R_IA64_PCREL64I:
4227 /* The PCREL21BI reloc is specifically not intended for use with
4228 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4229 fixup code, and thus probably ought not be dynamic. The
4230 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4231 if (dynamic_symbol_p)
4232 {
4233 const char *msg;
4234
4235 if (r_type == R_IA64_PCREL21BI)
4236 /* xgettext:c-format */
4237 msg = _("%B: @internal branch to dynamic symbol %s");
4238 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4239 /* xgettext:c-format */
4240 msg = _("%B: speculation fixup to dynamic symbol %s");
4241 else
4242 /* xgettext:c-format */
4243 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4244 _bfd_error_handler (msg, input_bfd,
4245 h ? h->root.root.string
4246 : bfd_elf_sym_name (input_bfd,
4247 symtab_hdr,
4248 sym,
4249 sym_sec));
4250 ret_val = FALSE;
4251 continue;
4252 }
4253 goto finish_pcrel;
4254
4255 finish_pcrel:
4256 /* Make pc-relative. */
4257 value -= (input_section->output_section->vma
4258 + input_section->output_offset
4259 + rel->r_offset) & ~ (bfd_vma) 0x3;
4260 r = ia64_elf_install_value (hit_addr, value, r_type);
4261 break;
4262
4263 case R_IA64_SEGREL32MSB:
4264 case R_IA64_SEGREL32LSB:
4265 case R_IA64_SEGREL64MSB:
4266 case R_IA64_SEGREL64LSB:
4267 {
4268 /* Find the segment that contains the output_section. */
4269 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4270 (output_bfd, input_section->output_section);
4271
4272 if (p == NULL)
4273 {
4274 r = bfd_reloc_notsupported;
4275 }
4276 else
4277 {
4278 /* The VMA of the segment is the vaddr of the associated
4279 program header. */
4280 if (value > p->p_vaddr)
4281 value -= p->p_vaddr;
4282 else
4283 value = 0;
4284 r = ia64_elf_install_value (hit_addr, value, r_type);
4285 }
4286 break;
4287 }
4288
4289 case R_IA64_SECREL32MSB:
4290 case R_IA64_SECREL32LSB:
4291 case R_IA64_SECREL64MSB:
4292 case R_IA64_SECREL64LSB:
4293 /* Make output-section relative to section where the symbol
4294 is defined. PR 475 */
4295 if (sym_sec)
4296 value -= sym_sec->output_section->vma;
4297 r = ia64_elf_install_value (hit_addr, value, r_type);
4298 break;
4299
4300 case R_IA64_IPLTMSB:
4301 case R_IA64_IPLTLSB:
4302 /* Install a dynamic relocation for this reloc. */
4303 if ((dynamic_symbol_p || bfd_link_pic (info))
4304 && (input_section->flags & SEC_ALLOC) != 0)
4305 {
4306 BFD_ASSERT (srel != NULL);
4307
4308 /* If we don't need dynamic symbol lookup, install two
4309 RELATIVE relocations. */
4310 if (!dynamic_symbol_p)
4311 {
4312 unsigned int dyn_r_type;
4313
4314 if (r_type == R_IA64_IPLTMSB)
4315 dyn_r_type = R_IA64_REL64MSB;
4316 else
4317 dyn_r_type = R_IA64_REL64LSB;
4318
4319 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4320 input_section,
4321 srel, rel->r_offset,
4322 dyn_r_type, 0, value);
4323 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4324 input_section,
4325 srel, rel->r_offset + 8,
4326 dyn_r_type, 0, gp_val);
4327 }
4328 else
4329 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4330 srel, rel->r_offset, r_type,
4331 h->dynindx, rel->r_addend);
4332 }
4333
4334 if (r_type == R_IA64_IPLTMSB)
4335 r_type = R_IA64_DIR64MSB;
4336 else
4337 r_type = R_IA64_DIR64LSB;
4338 ia64_elf_install_value (hit_addr, value, r_type);
4339 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4340 break;
4341
4342 case R_IA64_TPREL14:
4343 case R_IA64_TPREL22:
4344 case R_IA64_TPREL64I:
4345 if (elf_hash_table (info)->tls_sec == NULL)
4346 goto missing_tls_sec;
4347 value -= elfNN_ia64_tprel_base (info);
4348 r = ia64_elf_install_value (hit_addr, value, r_type);
4349 break;
4350
4351 case R_IA64_DTPREL14:
4352 case R_IA64_DTPREL22:
4353 case R_IA64_DTPREL64I:
4354 case R_IA64_DTPREL32LSB:
4355 case R_IA64_DTPREL32MSB:
4356 case R_IA64_DTPREL64LSB:
4357 case R_IA64_DTPREL64MSB:
4358 if (elf_hash_table (info)->tls_sec == NULL)
4359 goto missing_tls_sec;
4360 value -= elfNN_ia64_dtprel_base (info);
4361 r = ia64_elf_install_value (hit_addr, value, r_type);
4362 break;
4363
4364 case R_IA64_LTOFF_TPREL22:
4365 case R_IA64_LTOFF_DTPMOD22:
4366 case R_IA64_LTOFF_DTPREL22:
4367 {
4368 int got_r_type;
4369 long dynindx = h ? h->dynindx : -1;
4370 bfd_vma r_addend = rel->r_addend;
4371
4372 switch (r_type)
4373 {
4374 default:
4375 case R_IA64_LTOFF_TPREL22:
4376 if (!dynamic_symbol_p)
4377 {
4378 if (elf_hash_table (info)->tls_sec == NULL)
4379 goto missing_tls_sec;
4380 if (!bfd_link_pic (info))
4381 value -= elfNN_ia64_tprel_base (info);
4382 else
4383 {
4384 r_addend += value - elfNN_ia64_dtprel_base (info);
4385 dynindx = 0;
4386 }
4387 }
4388 got_r_type = R_IA64_TPREL64LSB;
4389 break;
4390 case R_IA64_LTOFF_DTPMOD22:
4391 if (!dynamic_symbol_p && !bfd_link_pic (info))
4392 value = 1;
4393 got_r_type = R_IA64_DTPMOD64LSB;
4394 break;
4395 case R_IA64_LTOFF_DTPREL22:
4396 if (!dynamic_symbol_p)
4397 {
4398 if (elf_hash_table (info)->tls_sec == NULL)
4399 goto missing_tls_sec;
4400 value -= elfNN_ia64_dtprel_base (info);
4401 }
4402 got_r_type = R_IA64_DTPRELNNLSB;
4403 break;
4404 }
4405 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4406 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4407 value, got_r_type);
4408 value -= gp_val;
4409 r = ia64_elf_install_value (hit_addr, value, r_type);
4410 }
4411 break;
4412
4413 default:
4414 r = bfd_reloc_notsupported;
4415 break;
4416 }
4417
4418 switch (r)
4419 {
4420 case bfd_reloc_ok:
4421 break;
4422
4423 case bfd_reloc_undefined:
4424 /* This can happen for global table relative relocs if
4425 __gp is undefined. This is a panic situation so we
4426 don't try to continue. */
4427 (*info->callbacks->undefined_symbol)
4428 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4429 return FALSE;
4430
4431 case bfd_reloc_notsupported:
4432 {
4433 const char *name;
4434
4435 if (h)
4436 name = h->root.root.string;
4437 else
4438 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4439 sym_sec);
4440 (*info->callbacks->warning) (info, _("unsupported reloc"),
4441 name, input_bfd,
4442 input_section, rel->r_offset);
4443 ret_val = FALSE;
4444 }
4445 break;
4446
4447 case bfd_reloc_dangerous:
4448 case bfd_reloc_outofrange:
4449 case bfd_reloc_overflow:
4450 default:
4451 missing_tls_sec:
4452 {
4453 const char *name;
4454
4455 if (h)
4456 name = h->root.root.string;
4457 else
4458 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4459 sym_sec);
4460
4461 switch (r_type)
4462 {
4463 case R_IA64_TPREL14:
4464 case R_IA64_TPREL22:
4465 case R_IA64_TPREL64I:
4466 case R_IA64_DTPREL14:
4467 case R_IA64_DTPREL22:
4468 case R_IA64_DTPREL64I:
4469 case R_IA64_DTPREL32LSB:
4470 case R_IA64_DTPREL32MSB:
4471 case R_IA64_DTPREL64LSB:
4472 case R_IA64_DTPREL64MSB:
4473 case R_IA64_LTOFF_TPREL22:
4474 case R_IA64_LTOFF_DTPMOD22:
4475 case R_IA64_LTOFF_DTPREL22:
4476 _bfd_error_handler
4477 /* xgettext:c-format */
4478 (_("%B: missing TLS section for relocation %s against `%s'"
4479 " at 0x%lx in section `%A'."),
4480 input_bfd, howto->name, name,
4481 rel->r_offset, input_section);
4482 break;
4483
4484 case R_IA64_PCREL21B:
4485 case R_IA64_PCREL21BI:
4486 case R_IA64_PCREL21M:
4487 case R_IA64_PCREL21F:
4488 if (is_elf_hash_table (info->hash))
4489 {
4490 /* Relaxtion is always performed for ELF output.
4491 Overflow failures for those relocations mean
4492 that the section is too big to relax. */
4493 _bfd_error_handler
4494 /* xgettext:c-format */
4495 (_("%B: Can't relax br (%s) to `%s' at 0x%lx"
4496 " in section `%A' with size 0x%lx (> 0x1000000)."),
4497 input_bfd, howto->name, name, rel->r_offset,
4498 input_section, input_section->size);
4499 break;
4500 }
4501 /* Fall through. */
4502 default:
4503 (*info->callbacks->reloc_overflow) (info,
4504 &h->root,
4505 name,
4506 howto->name,
4507 (bfd_vma) 0,
4508 input_bfd,
4509 input_section,
4510 rel->r_offset);
4511 break;
4512 }
4513
4514 ret_val = FALSE;
4515 }
4516 break;
4517 }
4518 }
4519
4520 return ret_val;
4521 }
4522
4523 static bfd_boolean
4524 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4525 struct bfd_link_info *info,
4526 struct elf_link_hash_entry *h,
4527 Elf_Internal_Sym *sym)
4528 {
4529 struct elfNN_ia64_link_hash_table *ia64_info;
4530 struct elfNN_ia64_dyn_sym_info *dyn_i;
4531
4532 ia64_info = elfNN_ia64_hash_table (info);
4533 if (ia64_info == NULL)
4534 return FALSE;
4535
4536 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4537
4538 /* Fill in the PLT data, if required. */
4539 if (dyn_i && dyn_i->want_plt)
4540 {
4541 Elf_Internal_Rela outrel;
4542 bfd_byte *loc;
4543 asection *plt_sec;
4544 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4545
4546 gp_val = _bfd_get_gp_value (output_bfd);
4547
4548 /* Initialize the minimal PLT entry. */
4549
4550 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4551 plt_sec = ia64_info->root.splt;
4552 loc = plt_sec->contents + dyn_i->plt_offset;
4553
4554 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4555 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4556 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4557
4558 plt_addr = (plt_sec->output_section->vma
4559 + plt_sec->output_offset
4560 + dyn_i->plt_offset);
4561 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4562
4563 /* Initialize the FULL PLT entry, if needed. */
4564 if (dyn_i->want_plt2)
4565 {
4566 loc = plt_sec->contents + dyn_i->plt2_offset;
4567
4568 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4569 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4570
4571 /* Mark the symbol as undefined, rather than as defined in the
4572 plt section. Leave the value alone. */
4573 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4574 first place. But perhaps elflink.c did some for us. */
4575 if (!h->def_regular)
4576 sym->st_shndx = SHN_UNDEF;
4577 }
4578
4579 /* Create the dynamic relocation. */
4580 outrel.r_offset = pltoff_addr;
4581 if (bfd_little_endian (output_bfd))
4582 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4583 else
4584 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4585 outrel.r_addend = 0;
4586
4587 /* This is fun. In the .IA_64.pltoff section, we've got entries
4588 that correspond both to real PLT entries, and those that
4589 happened to resolve to local symbols but need to be created
4590 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4591 relocations for the real PLT should come at the end of the
4592 section, so that they can be indexed by plt entry at runtime.
4593
4594 We emitted all of the relocations for the non-PLT @pltoff
4595 entries during relocate_section. So we can consider the
4596 existing sec->reloc_count to be the base of the array of
4597 PLT relocations. */
4598
4599 loc = ia64_info->rel_pltoff_sec->contents;
4600 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4601 * sizeof (ElfNN_External_Rela));
4602 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4603 }
4604
4605 /* Mark some specially defined symbols as absolute. */
4606 if (h == ia64_info->root.hdynamic
4607 || h == ia64_info->root.hgot
4608 || h == ia64_info->root.hplt)
4609 sym->st_shndx = SHN_ABS;
4610
4611 return TRUE;
4612 }
4613
4614 static bfd_boolean
4615 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4616 struct bfd_link_info *info)
4617 {
4618 struct elfNN_ia64_link_hash_table *ia64_info;
4619 bfd *dynobj;
4620
4621 ia64_info = elfNN_ia64_hash_table (info);
4622 if (ia64_info == NULL)
4623 return FALSE;
4624
4625 dynobj = ia64_info->root.dynobj;
4626
4627 if (ia64_info->root.dynamic_sections_created)
4628 {
4629 ElfNN_External_Dyn *dyncon, *dynconend;
4630 asection *sdyn, *sgotplt;
4631 bfd_vma gp_val;
4632
4633 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4634 sgotplt = ia64_info->root.sgotplt;
4635 BFD_ASSERT (sdyn != NULL);
4636 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4637 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4638
4639 gp_val = _bfd_get_gp_value (abfd);
4640
4641 for (; dyncon < dynconend; dyncon++)
4642 {
4643 Elf_Internal_Dyn dyn;
4644
4645 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4646
4647 switch (dyn.d_tag)
4648 {
4649 case DT_PLTGOT:
4650 dyn.d_un.d_ptr = gp_val;
4651 break;
4652
4653 case DT_PLTRELSZ:
4654 dyn.d_un.d_val = (ia64_info->minplt_entries
4655 * sizeof (ElfNN_External_Rela));
4656 break;
4657
4658 case DT_JMPREL:
4659 /* See the comment above in finish_dynamic_symbol. */
4660 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4661 + ia64_info->rel_pltoff_sec->output_offset
4662 + (ia64_info->rel_pltoff_sec->reloc_count
4663 * sizeof (ElfNN_External_Rela)));
4664 break;
4665
4666 case DT_IA_64_PLT_RESERVE:
4667 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4668 + sgotplt->output_offset);
4669 break;
4670 }
4671
4672 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4673 }
4674
4675 /* Initialize the PLT0 entry. */
4676 if (ia64_info->root.splt)
4677 {
4678 bfd_byte *loc = ia64_info->root.splt->contents;
4679 bfd_vma pltres;
4680
4681 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4682
4683 pltres = (sgotplt->output_section->vma
4684 + sgotplt->output_offset
4685 - gp_val);
4686
4687 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4688 }
4689 }
4690
4691 return TRUE;
4692 }
4693 \f
4694 /* ELF file flag handling: */
4695
4696 /* Function to keep IA-64 specific file flags. */
4697 static bfd_boolean
4698 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4699 {
4700 BFD_ASSERT (!elf_flags_init (abfd)
4701 || elf_elfheader (abfd)->e_flags == flags);
4702
4703 elf_elfheader (abfd)->e_flags = flags;
4704 elf_flags_init (abfd) = TRUE;
4705 return TRUE;
4706 }
4707
4708 /* Merge backend specific data from an object file to the output
4709 object file when linking. */
4710 static bfd_boolean
4711 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4712 {
4713 bfd *obfd = info->output_bfd;
4714 flagword out_flags;
4715 flagword in_flags;
4716 bfd_boolean ok = TRUE;
4717
4718 /* Don't even pretend to support mixed-format linking. */
4719 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4720 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4721 return FALSE;
4722
4723 in_flags = elf_elfheader (ibfd)->e_flags;
4724 out_flags = elf_elfheader (obfd)->e_flags;
4725
4726 if (! elf_flags_init (obfd))
4727 {
4728 elf_flags_init (obfd) = TRUE;
4729 elf_elfheader (obfd)->e_flags = in_flags;
4730
4731 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4732 && bfd_get_arch_info (obfd)->the_default)
4733 {
4734 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4735 bfd_get_mach (ibfd));
4736 }
4737
4738 return TRUE;
4739 }
4740
4741 /* Check flag compatibility. */
4742 if (in_flags == out_flags)
4743 return TRUE;
4744
4745 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4746 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4747 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4748
4749 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4750 {
4751 _bfd_error_handler
4752 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4753 ibfd);
4754
4755 bfd_set_error (bfd_error_bad_value);
4756 ok = FALSE;
4757 }
4758 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4759 {
4760 _bfd_error_handler
4761 (_("%B: linking big-endian files with little-endian files"),
4762 ibfd);
4763
4764 bfd_set_error (bfd_error_bad_value);
4765 ok = FALSE;
4766 }
4767 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4768 {
4769 _bfd_error_handler
4770 (_("%B: linking 64-bit files with 32-bit files"),
4771 ibfd);
4772
4773 bfd_set_error (bfd_error_bad_value);
4774 ok = FALSE;
4775 }
4776 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4777 {
4778 _bfd_error_handler
4779 (_("%B: linking constant-gp files with non-constant-gp files"),
4780 ibfd);
4781
4782 bfd_set_error (bfd_error_bad_value);
4783 ok = FALSE;
4784 }
4785 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4786 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4787 {
4788 _bfd_error_handler
4789 (_("%B: linking auto-pic files with non-auto-pic files"),
4790 ibfd);
4791
4792 bfd_set_error (bfd_error_bad_value);
4793 ok = FALSE;
4794 }
4795
4796 return ok;
4797 }
4798
4799 static bfd_boolean
4800 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4801 {
4802 FILE *file = (FILE *) ptr;
4803 flagword flags = elf_elfheader (abfd)->e_flags;
4804
4805 BFD_ASSERT (abfd != NULL && ptr != NULL);
4806
4807 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4808 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4809 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4810 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4811 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4812 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4813 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4814 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4815 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4816
4817 _bfd_elf_print_private_bfd_data (abfd, ptr);
4818 return TRUE;
4819 }
4820
4821 static enum elf_reloc_type_class
4822 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4823 const asection *rel_sec ATTRIBUTE_UNUSED,
4824 const Elf_Internal_Rela *rela)
4825 {
4826 switch ((int) ELFNN_R_TYPE (rela->r_info))
4827 {
4828 case R_IA64_REL32MSB:
4829 case R_IA64_REL32LSB:
4830 case R_IA64_REL64MSB:
4831 case R_IA64_REL64LSB:
4832 return reloc_class_relative;
4833 case R_IA64_IPLTMSB:
4834 case R_IA64_IPLTLSB:
4835 return reloc_class_plt;
4836 case R_IA64_COPY:
4837 return reloc_class_copy;
4838 default:
4839 return reloc_class_normal;
4840 }
4841 }
4842
4843 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4844 {
4845 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4846 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4847 { NULL, 0, 0, 0, 0 }
4848 };
4849
4850 static bfd_boolean
4851 elfNN_ia64_object_p (bfd *abfd)
4852 {
4853 asection *sec;
4854 asection *group, *unwi, *unw;
4855 flagword flags;
4856 const char *name;
4857 char *unwi_name, *unw_name;
4858 bfd_size_type amt;
4859
4860 if (abfd->flags & DYNAMIC)
4861 return TRUE;
4862
4863 /* Flags for fake group section. */
4864 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4865 | SEC_EXCLUDE);
4866
4867 /* We add a fake section group for each .gnu.linkonce.t.* section,
4868 which isn't in a section group, and its unwind sections. */
4869 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4870 {
4871 if (elf_sec_group (sec) == NULL
4872 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4873 == (SEC_LINK_ONCE | SEC_CODE))
4874 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4875 {
4876 name = sec->name + 16;
4877
4878 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4879 unwi_name = bfd_alloc (abfd, amt);
4880 if (!unwi_name)
4881 return FALSE;
4882
4883 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4884 unwi = bfd_get_section_by_name (abfd, unwi_name);
4885
4886 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4887 unw_name = bfd_alloc (abfd, amt);
4888 if (!unw_name)
4889 return FALSE;
4890
4891 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4892 unw = bfd_get_section_by_name (abfd, unw_name);
4893
4894 /* We need to create a fake group section for it and its
4895 unwind sections. */
4896 group = bfd_make_section_anyway_with_flags (abfd, name,
4897 flags);
4898 if (group == NULL)
4899 return FALSE;
4900
4901 /* Move the fake group section to the beginning. */
4902 bfd_section_list_remove (abfd, group);
4903 bfd_section_list_prepend (abfd, group);
4904
4905 elf_next_in_group (group) = sec;
4906
4907 elf_group_name (sec) = name;
4908 elf_next_in_group (sec) = sec;
4909 elf_sec_group (sec) = group;
4910
4911 if (unwi)
4912 {
4913 elf_group_name (unwi) = name;
4914 elf_next_in_group (unwi) = sec;
4915 elf_next_in_group (sec) = unwi;
4916 elf_sec_group (unwi) = group;
4917 }
4918
4919 if (unw)
4920 {
4921 elf_group_name (unw) = name;
4922 if (unwi)
4923 {
4924 elf_next_in_group (unw) = elf_next_in_group (unwi);
4925 elf_next_in_group (unwi) = unw;
4926 }
4927 else
4928 {
4929 elf_next_in_group (unw) = sec;
4930 elf_next_in_group (sec) = unw;
4931 }
4932 elf_sec_group (unw) = group;
4933 }
4934
4935 /* Fake SHT_GROUP section header. */
4936 elf_section_data (group)->this_hdr.bfd_section = group;
4937 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4938 }
4939 }
4940 return TRUE;
4941 }
4942
4943 static bfd_boolean
4944 elfNN_ia64_hpux_vec (const bfd_target *vec)
4945 {
4946 extern const bfd_target ia64_elfNN_hpux_be_vec;
4947 return (vec == &ia64_elfNN_hpux_be_vec);
4948 }
4949
4950 static void
4951 elfNN_hpux_post_process_headers (bfd *abfd,
4952 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4953 {
4954 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4955
4956 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4957 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4958 }
4959
4960 static bfd_boolean
4961 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4962 asection *sec, int *retval)
4963 {
4964 if (bfd_is_com_section (sec))
4965 {
4966 *retval = SHN_IA_64_ANSI_COMMON;
4967 return TRUE;
4968 }
4969 return FALSE;
4970 }
4971
4972 static void
4973 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4974 asymbol *asym)
4975 {
4976 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4977
4978 switch (elfsym->internal_elf_sym.st_shndx)
4979 {
4980 case SHN_IA_64_ANSI_COMMON:
4981 asym->section = bfd_com_section_ptr;
4982 asym->value = elfsym->internal_elf_sym.st_size;
4983 asym->flags &= ~BSF_GLOBAL;
4984 break;
4985 }
4986 }
4987 \f
4988 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4989 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4990 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4991 #define TARGET_BIG_NAME "elfNN-ia64-big"
4992 #define ELF_ARCH bfd_arch_ia64
4993 #define ELF_TARGET_ID IA64_ELF_DATA
4994 #define ELF_MACHINE_CODE EM_IA_64
4995 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4996 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4997 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4998 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4999
5000 #define elf_backend_section_from_shdr \
5001 elfNN_ia64_section_from_shdr
5002 #define elf_backend_section_flags \
5003 elfNN_ia64_section_flags
5004 #define elf_backend_fake_sections \
5005 elfNN_ia64_fake_sections
5006 #define elf_backend_final_write_processing \
5007 elfNN_ia64_final_write_processing
5008 #define elf_backend_add_symbol_hook \
5009 elfNN_ia64_add_symbol_hook
5010 #define elf_backend_additional_program_headers \
5011 elfNN_ia64_additional_program_headers
5012 #define elf_backend_modify_segment_map \
5013 elfNN_ia64_modify_segment_map
5014 #define elf_backend_modify_program_headers \
5015 elfNN_ia64_modify_program_headers
5016 #define elf_info_to_howto \
5017 elfNN_ia64_info_to_howto
5018
5019 #define bfd_elfNN_bfd_reloc_type_lookup \
5020 ia64_elf_reloc_type_lookup
5021 #define bfd_elfNN_bfd_reloc_name_lookup \
5022 ia64_elf_reloc_name_lookup
5023 #define bfd_elfNN_bfd_is_local_label_name \
5024 elfNN_ia64_is_local_label_name
5025 #define bfd_elfNN_bfd_relax_section \
5026 elfNN_ia64_relax_section
5027
5028 #define elf_backend_object_p \
5029 elfNN_ia64_object_p
5030
5031 /* Stuff for the BFD linker: */
5032 #define bfd_elfNN_bfd_link_hash_table_create \
5033 elfNN_ia64_hash_table_create
5034 #define elf_backend_create_dynamic_sections \
5035 elfNN_ia64_create_dynamic_sections
5036 #define elf_backend_check_relocs \
5037 elfNN_ia64_check_relocs
5038 #define elf_backend_adjust_dynamic_symbol \
5039 elfNN_ia64_adjust_dynamic_symbol
5040 #define elf_backend_size_dynamic_sections \
5041 elfNN_ia64_size_dynamic_sections
5042 #define elf_backend_omit_section_dynsym \
5043 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5044 #define elf_backend_relocate_section \
5045 elfNN_ia64_relocate_section
5046 #define elf_backend_finish_dynamic_symbol \
5047 elfNN_ia64_finish_dynamic_symbol
5048 #define elf_backend_finish_dynamic_sections \
5049 elfNN_ia64_finish_dynamic_sections
5050 #define bfd_elfNN_bfd_final_link \
5051 elfNN_ia64_final_link
5052
5053 #define bfd_elfNN_bfd_merge_private_bfd_data \
5054 elfNN_ia64_merge_private_bfd_data
5055 #define bfd_elfNN_bfd_set_private_flags \
5056 elfNN_ia64_set_private_flags
5057 #define bfd_elfNN_bfd_print_private_bfd_data \
5058 elfNN_ia64_print_private_bfd_data
5059
5060 #define elf_backend_plt_readonly 1
5061 #define elf_backend_want_plt_sym 0
5062 #define elf_backend_plt_alignment 5
5063 #define elf_backend_got_header_size 0
5064 #define elf_backend_want_got_plt 1
5065 #define elf_backend_may_use_rel_p 1
5066 #define elf_backend_may_use_rela_p 1
5067 #define elf_backend_default_use_rela_p 1
5068 #define elf_backend_want_dynbss 0
5069 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5070 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5071 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5072 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5073 #define elf_backend_rela_normal 1
5074 #define elf_backend_dtrel_excludes_plt 1
5075 #define elf_backend_special_sections elfNN_ia64_special_sections
5076 #define elf_backend_default_execstack 0
5077
5078 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5079 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5080 We don't want to flood users with so many error messages. We turn
5081 off the warning for now. It will be turned on later when the Intel
5082 compiler is fixed. */
5083 #define elf_backend_link_order_error_handler NULL
5084
5085 #include "elfNN-target.h"
5086
5087 /* HPUX-specific vectors. */
5088
5089 #undef TARGET_LITTLE_SYM
5090 #undef TARGET_LITTLE_NAME
5091 #undef TARGET_BIG_SYM
5092 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5093 #undef TARGET_BIG_NAME
5094 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5095
5096 /* These are HP-UX specific functions. */
5097
5098 #undef elf_backend_post_process_headers
5099 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5100
5101 #undef elf_backend_section_from_bfd_section
5102 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5103
5104 #undef elf_backend_symbol_processing
5105 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5106
5107 #undef elf_backend_want_p_paddr_set_to_zero
5108 #define elf_backend_want_p_paddr_set_to_zero 1
5109
5110 #undef ELF_COMMONPAGESIZE
5111 #undef ELF_OSABI
5112 #define ELF_OSABI ELFOSABI_HPUX
5113
5114 #undef elfNN_bed
5115 #define elfNN_bed elfNN_ia64_hpux_bed
5116
5117 #include "elfNN-target.h"
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