PR ld/15323
[deliverable/binutils-gdb.git] / bfd / elfnn-ia64.c
1 /* IA-64 support for 64-bit ELF
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "opcode/ia64.h"
28 #include "elf/ia64.h"
29 #include "objalloc.h"
30 #include "hashtab.h"
31 #include "bfd_stdint.h"
32 #include "elfxx-ia64.h"
33
34 #define ARCH_SIZE NN
35
36 #if ARCH_SIZE == 64
37 #define LOG_SECTION_ALIGN 3
38 #endif
39
40 #if ARCH_SIZE == 32
41 #define LOG_SECTION_ALIGN 2
42 #endif
43
44 typedef struct bfd_hash_entry *(*new_hash_entry_func)
45 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
46
47 /* In dynamically (linker-) created sections, we generally need to keep track
48 of the place a symbol or expression got allocated to. This is done via hash
49 tables that store entries of the following type. */
50
51 struct elfNN_ia64_dyn_sym_info
52 {
53 /* The addend for which this entry is relevant. */
54 bfd_vma addend;
55
56 bfd_vma got_offset;
57 bfd_vma fptr_offset;
58 bfd_vma pltoff_offset;
59 bfd_vma plt_offset;
60 bfd_vma plt2_offset;
61 bfd_vma tprel_offset;
62 bfd_vma dtpmod_offset;
63 bfd_vma dtprel_offset;
64
65 /* The symbol table entry, if any, that this was derived from. */
66 struct elf_link_hash_entry *h;
67
68 /* Used to count non-got, non-plt relocations for delayed sizing
69 of relocation sections. */
70 struct elfNN_ia64_dyn_reloc_entry
71 {
72 struct elfNN_ia64_dyn_reloc_entry *next;
73 asection *srel;
74 int type;
75 int count;
76
77 /* Is this reloc against readonly section? */
78 bfd_boolean reltext;
79 } *reloc_entries;
80
81 /* TRUE when the section contents have been updated. */
82 unsigned got_done : 1;
83 unsigned fptr_done : 1;
84 unsigned pltoff_done : 1;
85 unsigned tprel_done : 1;
86 unsigned dtpmod_done : 1;
87 unsigned dtprel_done : 1;
88
89 /* TRUE for the different kinds of linker data we want created. */
90 unsigned want_got : 1;
91 unsigned want_gotx : 1;
92 unsigned want_fptr : 1;
93 unsigned want_ltoff_fptr : 1;
94 unsigned want_plt : 1;
95 unsigned want_plt2 : 1;
96 unsigned want_pltoff : 1;
97 unsigned want_tprel : 1;
98 unsigned want_dtpmod : 1;
99 unsigned want_dtprel : 1;
100 };
101
102 struct elfNN_ia64_local_hash_entry
103 {
104 int id;
105 unsigned int r_sym;
106 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
107 unsigned int count;
108 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
109 unsigned int sorted_count;
110 /* The size of elfNN_ia64_dyn_sym_info array. */
111 unsigned int size;
112 /* The array of elfNN_ia64_dyn_sym_info. */
113 struct elfNN_ia64_dyn_sym_info *info;
114
115 /* TRUE if this hash entry's addends was translated for
116 SHF_MERGE optimization. */
117 unsigned sec_merge_done : 1;
118 };
119
120 struct elfNN_ia64_link_hash_entry
121 {
122 struct elf_link_hash_entry root;
123 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
124 unsigned int count;
125 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
126 unsigned int sorted_count;
127 /* The size of elfNN_ia64_dyn_sym_info array. */
128 unsigned int size;
129 /* The array of elfNN_ia64_dyn_sym_info. */
130 struct elfNN_ia64_dyn_sym_info *info;
131 };
132
133 struct elfNN_ia64_link_hash_table
134 {
135 /* The main hash table. */
136 struct elf_link_hash_table root;
137
138 asection *fptr_sec; /* Function descriptor table (or NULL). */
139 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
140 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
141 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
142
143 bfd_size_type minplt_entries; /* Number of minplt entries. */
144 unsigned reltext : 1; /* Are there relocs against readonly sections? */
145 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
146 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
147 /* There are maybe R_IA64_GPREL22 relocations, including those
148 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
149 sections. We need to record those sections so that we can choose
150 a proper GP to cover all R_IA64_GPREL22 relocations. */
151 asection *max_short_sec; /* Maximum short output section. */
152 bfd_vma max_short_offset; /* Maximum short offset. */
153 asection *min_short_sec; /* Minimum short output section. */
154 bfd_vma min_short_offset; /* Minimum short offset. */
155
156 htab_t loc_hash_table;
157 void *loc_hash_memory;
158 };
159
160 struct elfNN_ia64_allocate_data
161 {
162 struct bfd_link_info *info;
163 bfd_size_type ofs;
164 bfd_boolean only_got;
165 };
166
167 #define elfNN_ia64_hash_table(p) \
168 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
169 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
170
171 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
172 (struct elfNN_ia64_link_hash_table *ia64_info,
173 struct elf_link_hash_entry *h,
174 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
175 static bfd_boolean elfNN_ia64_dynamic_symbol_p
176 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
177 static bfd_boolean elfNN_ia64_choose_gp
178 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
179 static void elfNN_ia64_dyn_sym_traverse
180 (struct elfNN_ia64_link_hash_table *ia64_info,
181 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
182 void * info);
183 static bfd_boolean allocate_global_data_got
184 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
185 static bfd_boolean allocate_global_fptr_got
186 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
187 static bfd_boolean allocate_local_got
188 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
189 static bfd_boolean elfNN_ia64_hpux_vec
190 (const bfd_target *vec);
191 static bfd_boolean allocate_dynrel_entries
192 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
193 static asection *get_pltoff
194 (bfd *abfd, struct bfd_link_info *info,
195 struct elfNN_ia64_link_hash_table *ia64_info);
196 \f
197 /* ia64-specific relocation. */
198
199 /* Given a ELF reloc, return the matching HOWTO structure. */
200
201 static void
202 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
203 arelent *bfd_reloc,
204 Elf_Internal_Rela *elf_reloc)
205 {
206 bfd_reloc->howto
207 = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
208 }
209 \f
210 #define PLT_HEADER_SIZE (3 * 16)
211 #define PLT_MIN_ENTRY_SIZE (1 * 16)
212 #define PLT_FULL_ENTRY_SIZE (2 * 16)
213 #define PLT_RESERVED_WORDS 3
214
215 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
216 {
217 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
218 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
219 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
220 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
221 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
222 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
223 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
224 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
225 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
226 };
227
228 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
229 {
230 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
231 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
232 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
233 };
234
235 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
236 {
237 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
238 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
239 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
240 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
241 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
242 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
243 };
244
245 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
246
247 static const bfd_byte oor_brl[16] =
248 {
249 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
251 0x00, 0x00, 0x00, 0xc0
252 };
253
254 static const bfd_byte oor_ip[48] =
255 {
256 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
257 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
258 0x01, 0x00, 0x00, 0x60,
259 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
260 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
261 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
262 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
263 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
264 0x60, 0x00, 0x80, 0x00 /* br b6;; */
265 };
266
267 static size_t oor_branch_size = sizeof (oor_brl);
268
269 void
270 bfd_elfNN_ia64_after_parse (int itanium)
271 {
272 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
273 }
274 \f
275
276 /* Rename some of the generic section flags to better document how they
277 are used here. */
278 #define skip_relax_pass_0 sec_flg0
279 #define skip_relax_pass_1 sec_flg1
280
281 /* These functions do relaxation for IA-64 ELF. */
282
283 static void
284 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
285 struct elfNN_ia64_link_hash_table *ia64_info)
286 {
287 /* Skip ABS and SHF_IA_64_SHORT sections. */
288 if (sec == bfd_abs_section_ptr
289 || (sec->flags & SEC_SMALL_DATA) != 0)
290 return;
291
292 if (!ia64_info->min_short_sec)
293 {
294 ia64_info->max_short_sec = sec;
295 ia64_info->max_short_offset = offset;
296 ia64_info->min_short_sec = sec;
297 ia64_info->min_short_offset = offset;
298 }
299 else if (sec == ia64_info->max_short_sec
300 && offset > ia64_info->max_short_offset)
301 ia64_info->max_short_offset = offset;
302 else if (sec == ia64_info->min_short_sec
303 && offset < ia64_info->min_short_offset)
304 ia64_info->min_short_offset = offset;
305 else if (sec->output_section->vma
306 > ia64_info->max_short_sec->vma)
307 {
308 ia64_info->max_short_sec = sec;
309 ia64_info->max_short_offset = offset;
310 }
311 else if (sec->output_section->vma
312 < ia64_info->min_short_sec->vma)
313 {
314 ia64_info->min_short_sec = sec;
315 ia64_info->min_short_offset = offset;
316 }
317 }
318
319 static bfd_boolean
320 elfNN_ia64_relax_section (bfd *abfd, asection *sec,
321 struct bfd_link_info *link_info,
322 bfd_boolean *again)
323 {
324 struct one_fixup
325 {
326 struct one_fixup *next;
327 asection *tsec;
328 bfd_vma toff;
329 bfd_vma trampoff;
330 };
331
332 Elf_Internal_Shdr *symtab_hdr;
333 Elf_Internal_Rela *internal_relocs;
334 Elf_Internal_Rela *irel, *irelend;
335 bfd_byte *contents;
336 Elf_Internal_Sym *isymbuf = NULL;
337 struct elfNN_ia64_link_hash_table *ia64_info;
338 struct one_fixup *fixups = NULL;
339 bfd_boolean changed_contents = FALSE;
340 bfd_boolean changed_relocs = FALSE;
341 bfd_boolean changed_got = FALSE;
342 bfd_boolean skip_relax_pass_0 = TRUE;
343 bfd_boolean skip_relax_pass_1 = TRUE;
344 bfd_vma gp = 0;
345
346 /* Assume we're not going to change any sizes, and we'll only need
347 one pass. */
348 *again = FALSE;
349
350 if (link_info->relocatable)
351 (*link_info->callbacks->einfo)
352 (_("%P%F: --relax and -r may not be used together\n"));
353
354 /* Don't even try to relax for non-ELF outputs. */
355 if (!is_elf_hash_table (link_info->hash))
356 return FALSE;
357
358 /* Nothing to do if there are no relocations or there is no need for
359 the current pass. */
360 if ((sec->flags & SEC_RELOC) == 0
361 || sec->reloc_count == 0
362 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
363 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
364 return TRUE;
365
366 ia64_info = elfNN_ia64_hash_table (link_info);
367 if (ia64_info == NULL)
368 return FALSE;
369
370 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
371
372 /* Load the relocations for this section. */
373 internal_relocs = (_bfd_elf_link_read_relocs
374 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
375 link_info->keep_memory));
376 if (internal_relocs == NULL)
377 return FALSE;
378
379 irelend = internal_relocs + sec->reloc_count;
380
381 /* Get the section contents. */
382 if (elf_section_data (sec)->this_hdr.contents != NULL)
383 contents = elf_section_data (sec)->this_hdr.contents;
384 else
385 {
386 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
387 goto error_return;
388 }
389
390 for (irel = internal_relocs; irel < irelend; irel++)
391 {
392 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
393 bfd_vma symaddr, reladdr, trampoff, toff, roff;
394 asection *tsec;
395 struct one_fixup *f;
396 bfd_size_type amt;
397 bfd_boolean is_branch;
398 struct elfNN_ia64_dyn_sym_info *dyn_i;
399 char symtype;
400
401 switch (r_type)
402 {
403 case R_IA64_PCREL21B:
404 case R_IA64_PCREL21BI:
405 case R_IA64_PCREL21M:
406 case R_IA64_PCREL21F:
407 /* In pass 1, all br relaxations are done. We can skip it. */
408 if (link_info->relax_pass == 1)
409 continue;
410 skip_relax_pass_0 = FALSE;
411 is_branch = TRUE;
412 break;
413
414 case R_IA64_PCREL60B:
415 /* We can't optimize brl to br in pass 0 since br relaxations
416 will increase the code size. Defer it to pass 1. */
417 if (link_info->relax_pass == 0)
418 {
419 skip_relax_pass_1 = FALSE;
420 continue;
421 }
422 is_branch = TRUE;
423 break;
424
425 case R_IA64_GPREL22:
426 /* Update max_short_sec/min_short_sec. */
427
428 case R_IA64_LTOFF22X:
429 case R_IA64_LDXMOV:
430 /* We can't relax ldx/mov in pass 0 since br relaxations will
431 increase the code size. Defer it to pass 1. */
432 if (link_info->relax_pass == 0)
433 {
434 skip_relax_pass_1 = FALSE;
435 continue;
436 }
437 is_branch = FALSE;
438 break;
439
440 default:
441 continue;
442 }
443
444 /* Get the value of the symbol referred to by the reloc. */
445 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
446 {
447 /* A local symbol. */
448 Elf_Internal_Sym *isym;
449
450 /* Read this BFD's local symbols. */
451 if (isymbuf == NULL)
452 {
453 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
454 if (isymbuf == NULL)
455 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
456 symtab_hdr->sh_info, 0,
457 NULL, NULL, NULL);
458 if (isymbuf == 0)
459 goto error_return;
460 }
461
462 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
463 if (isym->st_shndx == SHN_UNDEF)
464 continue; /* We can't do anything with undefined symbols. */
465 else if (isym->st_shndx == SHN_ABS)
466 tsec = bfd_abs_section_ptr;
467 else if (isym->st_shndx == SHN_COMMON)
468 tsec = bfd_com_section_ptr;
469 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
470 tsec = bfd_com_section_ptr;
471 else
472 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
473
474 toff = isym->st_value;
475 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
476 symtype = ELF_ST_TYPE (isym->st_info);
477 }
478 else
479 {
480 unsigned long indx;
481 struct elf_link_hash_entry *h;
482
483 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
484 h = elf_sym_hashes (abfd)[indx];
485 BFD_ASSERT (h != NULL);
486
487 while (h->root.type == bfd_link_hash_indirect
488 || h->root.type == bfd_link_hash_warning)
489 h = (struct elf_link_hash_entry *) h->root.u.i.link;
490
491 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
492
493 /* For branches to dynamic symbols, we're interested instead
494 in a branch to the PLT entry. */
495 if (is_branch && dyn_i && dyn_i->want_plt2)
496 {
497 /* Internal branches shouldn't be sent to the PLT.
498 Leave this for now and we'll give an error later. */
499 if (r_type != R_IA64_PCREL21B)
500 continue;
501
502 tsec = ia64_info->root.splt;
503 toff = dyn_i->plt2_offset;
504 BFD_ASSERT (irel->r_addend == 0);
505 }
506
507 /* Can't do anything else with dynamic symbols. */
508 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
509 continue;
510
511 else
512 {
513 /* We can't do anything with undefined symbols. */
514 if (h->root.type == bfd_link_hash_undefined
515 || h->root.type == bfd_link_hash_undefweak)
516 continue;
517
518 tsec = h->root.u.def.section;
519 toff = h->root.u.def.value;
520 }
521
522 symtype = h->type;
523 }
524
525 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
526 {
527 /* At this stage in linking, no SEC_MERGE symbol has been
528 adjusted, so all references to such symbols need to be
529 passed through _bfd_merged_section_offset. (Later, in
530 relocate_section, all SEC_MERGE symbols *except* for
531 section symbols have been adjusted.)
532
533 gas may reduce relocations against symbols in SEC_MERGE
534 sections to a relocation against the section symbol when
535 the original addend was zero. When the reloc is against
536 a section symbol we should include the addend in the
537 offset passed to _bfd_merged_section_offset, since the
538 location of interest is the original symbol. On the
539 other hand, an access to "sym+addend" where "sym" is not
540 a section symbol should not include the addend; Such an
541 access is presumed to be an offset from "sym"; The
542 location of interest is just "sym". */
543 if (symtype == STT_SECTION)
544 toff += irel->r_addend;
545
546 toff = _bfd_merged_section_offset (abfd, &tsec,
547 elf_section_data (tsec)->sec_info,
548 toff);
549
550 if (symtype != STT_SECTION)
551 toff += irel->r_addend;
552 }
553 else
554 toff += irel->r_addend;
555
556 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
557
558 roff = irel->r_offset;
559
560 if (is_branch)
561 {
562 bfd_signed_vma offset;
563
564 reladdr = (sec->output_section->vma
565 + sec->output_offset
566 + roff) & (bfd_vma) -4;
567
568 /* The .plt section is aligned at 32byte and the .text section
569 is aligned at 64byte. The .text section is right after the
570 .plt section. After the first relaxation pass, linker may
571 increase the gap between the .plt and .text sections up
572 to 32byte. We assume linker will always insert 32byte
573 between the .plt and .text sections after the first
574 relaxation pass. */
575 if (tsec == ia64_info->root.splt)
576 offset = -0x1000000 + 32;
577 else
578 offset = -0x1000000;
579
580 /* If the branch is in range, no need to do anything. */
581 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
582 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
583 {
584 /* If the 60-bit branch is in 21-bit range, optimize it. */
585 if (r_type == R_IA64_PCREL60B)
586 {
587 ia64_elf_relax_brl (contents, roff);
588
589 irel->r_info
590 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
591 R_IA64_PCREL21B);
592
593 /* If the original relocation offset points to slot
594 1, change it to slot 2. */
595 if ((irel->r_offset & 3) == 1)
596 irel->r_offset += 1;
597 }
598
599 continue;
600 }
601 else if (r_type == R_IA64_PCREL60B)
602 continue;
603 else if (ia64_elf_relax_br (contents, roff))
604 {
605 irel->r_info
606 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
607 R_IA64_PCREL60B);
608
609 /* Make the relocation offset point to slot 1. */
610 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
611 continue;
612 }
613
614 /* We can't put a trampoline in a .init/.fini section. Issue
615 an error. */
616 if (strcmp (sec->output_section->name, ".init") == 0
617 || strcmp (sec->output_section->name, ".fini") == 0)
618 {
619 (*_bfd_error_handler)
620 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
621 sec->owner, sec, (unsigned long) roff);
622 bfd_set_error (bfd_error_bad_value);
623 goto error_return;
624 }
625
626 /* If the branch and target are in the same section, you've
627 got one honking big section and we can't help you unless
628 you are branching backwards. You'll get an error message
629 later. */
630 if (tsec == sec && toff > roff)
631 continue;
632
633 /* Look for an existing fixup to this address. */
634 for (f = fixups; f ; f = f->next)
635 if (f->tsec == tsec && f->toff == toff)
636 break;
637
638 if (f == NULL)
639 {
640 /* Two alternatives: If it's a branch to a PLT entry, we can
641 make a copy of the FULL_PLT entry. Otherwise, we'll have
642 to use a `brl' insn to get where we're going. */
643
644 size_t size;
645
646 if (tsec == ia64_info->root.splt)
647 size = sizeof (plt_full_entry);
648 else
649 size = oor_branch_size;
650
651 /* Resize the current section to make room for the new branch. */
652 trampoff = (sec->size + 15) & (bfd_vma) -16;
653
654 /* If trampoline is out of range, there is nothing we
655 can do. */
656 offset = trampoff - (roff & (bfd_vma) -4);
657 if (offset < -0x1000000 || offset > 0x0FFFFF0)
658 continue;
659
660 amt = trampoff + size;
661 contents = (bfd_byte *) bfd_realloc (contents, amt);
662 if (contents == NULL)
663 goto error_return;
664 sec->size = amt;
665
666 if (tsec == ia64_info->root.splt)
667 {
668 memcpy (contents + trampoff, plt_full_entry, size);
669
670 /* Hijack the old relocation for use as the PLTOFF reloc. */
671 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
672 R_IA64_PLTOFF22);
673 irel->r_offset = trampoff;
674 }
675 else
676 {
677 if (size == sizeof (oor_ip))
678 {
679 memcpy (contents + trampoff, oor_ip, size);
680 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
681 R_IA64_PCREL64I);
682 irel->r_addend -= 16;
683 irel->r_offset = trampoff + 2;
684 }
685 else
686 {
687 memcpy (contents + trampoff, oor_brl, size);
688 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
689 R_IA64_PCREL60B);
690 irel->r_offset = trampoff + 2;
691 }
692
693 }
694
695 /* Record the fixup so we don't do it again this section. */
696 f = (struct one_fixup *)
697 bfd_malloc ((bfd_size_type) sizeof (*f));
698 f->next = fixups;
699 f->tsec = tsec;
700 f->toff = toff;
701 f->trampoff = trampoff;
702 fixups = f;
703 }
704 else
705 {
706 /* If trampoline is out of range, there is nothing we
707 can do. */
708 offset = f->trampoff - (roff & (bfd_vma) -4);
709 if (offset < -0x1000000 || offset > 0x0FFFFF0)
710 continue;
711
712 /* Nop out the reloc, since we're finalizing things here. */
713 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
714 }
715
716 /* Fix up the existing branch to hit the trampoline. */
717 if (ia64_elf_install_value (contents + roff, offset, r_type)
718 != bfd_reloc_ok)
719 goto error_return;
720
721 changed_contents = TRUE;
722 changed_relocs = TRUE;
723 }
724 else
725 {
726 /* Fetch the gp. */
727 if (gp == 0)
728 {
729 bfd *obfd = sec->output_section->owner;
730 gp = _bfd_get_gp_value (obfd);
731 if (gp == 0)
732 {
733 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
734 goto error_return;
735 gp = _bfd_get_gp_value (obfd);
736 }
737 }
738
739 /* If the data is out of range, do nothing. */
740 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
741 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
742 continue;
743
744 if (r_type == R_IA64_GPREL22)
745 elfNN_ia64_update_short_info (tsec->output_section,
746 tsec->output_offset + toff,
747 ia64_info);
748 else if (r_type == R_IA64_LTOFF22X)
749 {
750 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
751 R_IA64_GPREL22);
752 changed_relocs = TRUE;
753 if (dyn_i->want_gotx)
754 {
755 dyn_i->want_gotx = 0;
756 changed_got |= !dyn_i->want_got;
757 }
758
759 elfNN_ia64_update_short_info (tsec->output_section,
760 tsec->output_offset + toff,
761 ia64_info);
762 }
763 else
764 {
765 ia64_elf_relax_ldxmov (contents, roff);
766 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
767 changed_contents = TRUE;
768 changed_relocs = TRUE;
769 }
770 }
771 }
772
773 /* ??? If we created fixups, this may push the code segment large
774 enough that the data segment moves, which will change the GP.
775 Reset the GP so that we re-calculate next round. We need to
776 do this at the _beginning_ of the next round; now will not do. */
777
778 /* Clean up and go home. */
779 while (fixups)
780 {
781 struct one_fixup *f = fixups;
782 fixups = fixups->next;
783 free (f);
784 }
785
786 if (isymbuf != NULL
787 && symtab_hdr->contents != (unsigned char *) isymbuf)
788 {
789 if (! link_info->keep_memory)
790 free (isymbuf);
791 else
792 {
793 /* Cache the symbols for elf_link_input_bfd. */
794 symtab_hdr->contents = (unsigned char *) isymbuf;
795 }
796 }
797
798 if (contents != NULL
799 && elf_section_data (sec)->this_hdr.contents != contents)
800 {
801 if (!changed_contents && !link_info->keep_memory)
802 free (contents);
803 else
804 {
805 /* Cache the section contents for elf_link_input_bfd. */
806 elf_section_data (sec)->this_hdr.contents = contents;
807 }
808 }
809
810 if (elf_section_data (sec)->relocs != internal_relocs)
811 {
812 if (!changed_relocs)
813 free (internal_relocs);
814 else
815 elf_section_data (sec)->relocs = internal_relocs;
816 }
817
818 if (changed_got)
819 {
820 struct elfNN_ia64_allocate_data data;
821 data.info = link_info;
822 data.ofs = 0;
823 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
824
825 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
826 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
827 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
828 ia64_info->root.sgot->size = data.ofs;
829
830 if (ia64_info->root.dynamic_sections_created
831 && ia64_info->root.srelgot != NULL)
832 {
833 /* Resize .rela.got. */
834 ia64_info->root.srelgot->size = 0;
835 if (link_info->shared
836 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
837 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
838 data.only_got = TRUE;
839 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
840 &data);
841 }
842 }
843
844 if (link_info->relax_pass == 0)
845 {
846 /* Pass 0 is only needed to relax br. */
847 sec->skip_relax_pass_0 = skip_relax_pass_0;
848 sec->skip_relax_pass_1 = skip_relax_pass_1;
849 }
850
851 *again = changed_contents || changed_relocs;
852 return TRUE;
853
854 error_return:
855 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
856 free (isymbuf);
857 if (contents != NULL
858 && elf_section_data (sec)->this_hdr.contents != contents)
859 free (contents);
860 if (internal_relocs != NULL
861 && elf_section_data (sec)->relocs != internal_relocs)
862 free (internal_relocs);
863 return FALSE;
864 }
865 #undef skip_relax_pass_0
866 #undef skip_relax_pass_1
867 \f
868 /* Return TRUE if NAME is an unwind table section name. */
869
870 static inline bfd_boolean
871 is_unwind_section_name (bfd *abfd, const char *name)
872 {
873 if (elfNN_ia64_hpux_vec (abfd->xvec)
874 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
875 return FALSE;
876
877 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
878 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
879 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
880 }
881
882 /* Handle an IA-64 specific section when reading an object file. This
883 is called when bfd_section_from_shdr finds a section with an unknown
884 type. */
885
886 static bfd_boolean
887 elfNN_ia64_section_from_shdr (bfd *abfd,
888 Elf_Internal_Shdr *hdr,
889 const char *name,
890 int shindex)
891 {
892 /* There ought to be a place to keep ELF backend specific flags, but
893 at the moment there isn't one. We just keep track of the
894 sections by their name, instead. Fortunately, the ABI gives
895 suggested names for all the MIPS specific sections, so we will
896 probably get away with this. */
897 switch (hdr->sh_type)
898 {
899 case SHT_IA_64_UNWIND:
900 case SHT_IA_64_HP_OPT_ANOT:
901 break;
902
903 case SHT_IA_64_EXT:
904 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
905 return FALSE;
906 break;
907
908 default:
909 return FALSE;
910 }
911
912 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
913 return FALSE;
914
915 return TRUE;
916 }
917
918 /* Convert IA-64 specific section flags to bfd internal section flags. */
919
920 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
921 flag. */
922
923 static bfd_boolean
924 elfNN_ia64_section_flags (flagword *flags,
925 const Elf_Internal_Shdr *hdr)
926 {
927 if (hdr->sh_flags & SHF_IA_64_SHORT)
928 *flags |= SEC_SMALL_DATA;
929
930 return TRUE;
931 }
932
933 /* Set the correct type for an IA-64 ELF section. We do this by the
934 section name, which is a hack, but ought to work. */
935
936 static bfd_boolean
937 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
938 asection *sec)
939 {
940 const char *name;
941
942 name = bfd_get_section_name (abfd, sec);
943
944 if (is_unwind_section_name (abfd, name))
945 {
946 /* We don't have the sections numbered at this point, so sh_info
947 is set later, in elfNN_ia64_final_write_processing. */
948 hdr->sh_type = SHT_IA_64_UNWIND;
949 hdr->sh_flags |= SHF_LINK_ORDER;
950 }
951 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
952 hdr->sh_type = SHT_IA_64_EXT;
953 else if (strcmp (name, ".HP.opt_annot") == 0)
954 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
955 else if (strcmp (name, ".reloc") == 0)
956 /* This is an ugly, but unfortunately necessary hack that is
957 needed when producing EFI binaries on IA-64. It tells
958 elf.c:elf_fake_sections() not to consider ".reloc" as a section
959 containing ELF relocation info. We need this hack in order to
960 be able to generate ELF binaries that can be translated into
961 EFI applications (which are essentially COFF objects). Those
962 files contain a COFF ".reloc" section inside an ELFNN object,
963 which would normally cause BFD to segfault because it would
964 attempt to interpret this section as containing relocation
965 entries for section "oc". With this hack enabled, ".reloc"
966 will be treated as a normal data section, which will avoid the
967 segfault. However, you won't be able to create an ELFNN binary
968 with a section named "oc" that needs relocations, but that's
969 the kind of ugly side-effects you get when detecting section
970 types based on their names... In practice, this limitation is
971 unlikely to bite. */
972 hdr->sh_type = SHT_PROGBITS;
973
974 if (sec->flags & SEC_SMALL_DATA)
975 hdr->sh_flags |= SHF_IA_64_SHORT;
976
977 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
978
979 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
980 hdr->sh_flags |= SHF_IA_64_HP_TLS;
981
982 return TRUE;
983 }
984
985 /* The final processing done just before writing out an IA-64 ELF
986 object file. */
987
988 static void
989 elfNN_ia64_final_write_processing (bfd *abfd,
990 bfd_boolean linker ATTRIBUTE_UNUSED)
991 {
992 Elf_Internal_Shdr *hdr;
993 asection *s;
994
995 for (s = abfd->sections; s; s = s->next)
996 {
997 hdr = &elf_section_data (s)->this_hdr;
998 switch (hdr->sh_type)
999 {
1000 case SHT_IA_64_UNWIND:
1001 /* The IA-64 processor-specific ABI requires setting sh_link
1002 to the unwind section, whereas HP-UX requires sh_info to
1003 do so. For maximum compatibility, we'll set both for
1004 now... */
1005 hdr->sh_info = hdr->sh_link;
1006 break;
1007 }
1008 }
1009
1010 if (! elf_flags_init (abfd))
1011 {
1012 unsigned long flags = 0;
1013
1014 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1015 flags |= EF_IA_64_BE;
1016 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1017 flags |= EF_IA_64_ABI64;
1018
1019 elf_elfheader(abfd)->e_flags = flags;
1020 elf_flags_init (abfd) = TRUE;
1021 }
1022 }
1023
1024 /* Hook called by the linker routine which adds symbols from an object
1025 file. We use it to put .comm items in .sbss, and not .bss. */
1026
1027 static bfd_boolean
1028 elfNN_ia64_add_symbol_hook (bfd *abfd,
1029 struct bfd_link_info *info,
1030 Elf_Internal_Sym *sym,
1031 const char **namep ATTRIBUTE_UNUSED,
1032 flagword *flagsp ATTRIBUTE_UNUSED,
1033 asection **secp,
1034 bfd_vma *valp)
1035 {
1036 if (sym->st_shndx == SHN_COMMON
1037 && !info->relocatable
1038 && sym->st_size <= elf_gp_size (abfd))
1039 {
1040 /* Common symbols less than or equal to -G nn bytes are
1041 automatically put into .sbss. */
1042
1043 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1044
1045 if (scomm == NULL)
1046 {
1047 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1048 (SEC_ALLOC
1049 | SEC_IS_COMMON
1050 | SEC_LINKER_CREATED));
1051 if (scomm == NULL)
1052 return FALSE;
1053 }
1054
1055 *secp = scomm;
1056 *valp = sym->st_size;
1057 }
1058
1059 return TRUE;
1060 }
1061
1062 /* Return the number of additional phdrs we will need. */
1063
1064 static int
1065 elfNN_ia64_additional_program_headers (bfd *abfd,
1066 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1067 {
1068 asection *s;
1069 int ret = 0;
1070
1071 /* See if we need a PT_IA_64_ARCHEXT segment. */
1072 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1073 if (s && (s->flags & SEC_LOAD))
1074 ++ret;
1075
1076 /* Count how many PT_IA_64_UNWIND segments we need. */
1077 for (s = abfd->sections; s; s = s->next)
1078 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1079 ++ret;
1080
1081 return ret;
1082 }
1083
1084 static bfd_boolean
1085 elfNN_ia64_modify_segment_map (bfd *abfd,
1086 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1087 {
1088 struct elf_segment_map *m, **pm;
1089 Elf_Internal_Shdr *hdr;
1090 asection *s;
1091
1092 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1093 all PT_LOAD segments. */
1094 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1095 if (s && (s->flags & SEC_LOAD))
1096 {
1097 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1098 if (m->p_type == PT_IA_64_ARCHEXT)
1099 break;
1100 if (m == NULL)
1101 {
1102 m = ((struct elf_segment_map *)
1103 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1104 if (m == NULL)
1105 return FALSE;
1106
1107 m->p_type = PT_IA_64_ARCHEXT;
1108 m->count = 1;
1109 m->sections[0] = s;
1110
1111 /* We want to put it after the PHDR and INTERP segments. */
1112 pm = &elf_seg_map (abfd);
1113 while (*pm != NULL
1114 && ((*pm)->p_type == PT_PHDR
1115 || (*pm)->p_type == PT_INTERP))
1116 pm = &(*pm)->next;
1117
1118 m->next = *pm;
1119 *pm = m;
1120 }
1121 }
1122
1123 /* Install PT_IA_64_UNWIND segments, if needed. */
1124 for (s = abfd->sections; s; s = s->next)
1125 {
1126 hdr = &elf_section_data (s)->this_hdr;
1127 if (hdr->sh_type != SHT_IA_64_UNWIND)
1128 continue;
1129
1130 if (s && (s->flags & SEC_LOAD))
1131 {
1132 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1133 if (m->p_type == PT_IA_64_UNWIND)
1134 {
1135 int i;
1136
1137 /* Look through all sections in the unwind segment
1138 for a match since there may be multiple sections
1139 to a segment. */
1140 for (i = m->count - 1; i >= 0; --i)
1141 if (m->sections[i] == s)
1142 break;
1143
1144 if (i >= 0)
1145 break;
1146 }
1147
1148 if (m == NULL)
1149 {
1150 m = ((struct elf_segment_map *)
1151 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1152 if (m == NULL)
1153 return FALSE;
1154
1155 m->p_type = PT_IA_64_UNWIND;
1156 m->count = 1;
1157 m->sections[0] = s;
1158 m->next = NULL;
1159
1160 /* We want to put it last. */
1161 pm = &elf_seg_map (abfd);
1162 while (*pm != NULL)
1163 pm = &(*pm)->next;
1164 *pm = m;
1165 }
1166 }
1167 }
1168
1169 return TRUE;
1170 }
1171
1172 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1173 the input sections for each output section in the segment and testing
1174 for SHF_IA_64_NORECOV on each. */
1175
1176 static bfd_boolean
1177 elfNN_ia64_modify_program_headers (bfd *abfd,
1178 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1179 {
1180 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1181 struct elf_segment_map *m;
1182 Elf_Internal_Phdr *p;
1183
1184 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1185 if (m->p_type == PT_LOAD)
1186 {
1187 int i;
1188 for (i = m->count - 1; i >= 0; --i)
1189 {
1190 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1191
1192 while (order != NULL)
1193 {
1194 if (order->type == bfd_indirect_link_order)
1195 {
1196 asection *is = order->u.indirect.section;
1197 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1198 if (flags & SHF_IA_64_NORECOV)
1199 {
1200 p->p_flags |= PF_IA_64_NORECOV;
1201 goto found;
1202 }
1203 }
1204 order = order->next;
1205 }
1206 }
1207 found:;
1208 }
1209
1210 return TRUE;
1211 }
1212
1213 /* According to the Tahoe assembler spec, all labels starting with a
1214 '.' are local. */
1215
1216 static bfd_boolean
1217 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1218 const char *name)
1219 {
1220 return name[0] == '.';
1221 }
1222
1223 /* Should we do dynamic things to this symbol? */
1224
1225 static bfd_boolean
1226 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1227 struct bfd_link_info *info, int r_type)
1228 {
1229 bfd_boolean ignore_protected
1230 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1231 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1232
1233 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1234 }
1235 \f
1236 static struct bfd_hash_entry*
1237 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1238 struct bfd_hash_table *table,
1239 const char *string)
1240 {
1241 struct elfNN_ia64_link_hash_entry *ret;
1242 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1243
1244 /* Allocate the structure if it has not already been allocated by a
1245 subclass. */
1246 if (!ret)
1247 ret = bfd_hash_allocate (table, sizeof (*ret));
1248
1249 if (!ret)
1250 return 0;
1251
1252 /* Call the allocation method of the superclass. */
1253 ret = ((struct elfNN_ia64_link_hash_entry *)
1254 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1255 table, string));
1256
1257 ret->info = NULL;
1258 ret->count = 0;
1259 ret->sorted_count = 0;
1260 ret->size = 0;
1261 return (struct bfd_hash_entry *) ret;
1262 }
1263
1264 static void
1265 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1266 struct elf_link_hash_entry *xdir,
1267 struct elf_link_hash_entry *xind)
1268 {
1269 struct elfNN_ia64_link_hash_entry *dir, *ind;
1270
1271 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1272 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1273
1274 /* Copy down any references that we may have already seen to the
1275 symbol which just became indirect. */
1276
1277 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1278 dir->root.ref_regular |= ind->root.ref_regular;
1279 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1280 dir->root.needs_plt |= ind->root.needs_plt;
1281
1282 if (ind->root.root.type != bfd_link_hash_indirect)
1283 return;
1284
1285 /* Copy over the got and plt data. This would have been done
1286 by check_relocs. */
1287
1288 if (ind->info != NULL)
1289 {
1290 struct elfNN_ia64_dyn_sym_info *dyn_i;
1291 unsigned int count;
1292
1293 if (dir->info)
1294 free (dir->info);
1295
1296 dir->info = ind->info;
1297 dir->count = ind->count;
1298 dir->sorted_count = ind->sorted_count;
1299 dir->size = ind->size;
1300
1301 ind->info = NULL;
1302 ind->count = 0;
1303 ind->sorted_count = 0;
1304 ind->size = 0;
1305
1306 /* Fix up the dyn_sym_info pointers to the global symbol. */
1307 for (count = dir->count, dyn_i = dir->info;
1308 count != 0;
1309 count--, dyn_i++)
1310 dyn_i->h = &dir->root;
1311 }
1312
1313 /* Copy over the dynindx. */
1314
1315 if (ind->root.dynindx != -1)
1316 {
1317 if (dir->root.dynindx != -1)
1318 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1319 dir->root.dynstr_index);
1320 dir->root.dynindx = ind->root.dynindx;
1321 dir->root.dynstr_index = ind->root.dynstr_index;
1322 ind->root.dynindx = -1;
1323 ind->root.dynstr_index = 0;
1324 }
1325 }
1326
1327 static void
1328 elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1329 struct elf_link_hash_entry *xh,
1330 bfd_boolean force_local)
1331 {
1332 struct elfNN_ia64_link_hash_entry *h;
1333 struct elfNN_ia64_dyn_sym_info *dyn_i;
1334 unsigned int count;
1335
1336 h = (struct elfNN_ia64_link_hash_entry *)xh;
1337
1338 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1339
1340 for (count = h->count, dyn_i = h->info;
1341 count != 0;
1342 count--, dyn_i++)
1343 {
1344 dyn_i->want_plt2 = 0;
1345 dyn_i->want_plt = 0;
1346 }
1347 }
1348
1349 /* Compute a hash of a local hash entry. */
1350
1351 static hashval_t
1352 elfNN_ia64_local_htab_hash (const void *ptr)
1353 {
1354 struct elfNN_ia64_local_hash_entry *entry
1355 = (struct elfNN_ia64_local_hash_entry *) ptr;
1356
1357 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1358 }
1359
1360 /* Compare local hash entries. */
1361
1362 static int
1363 elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1364 {
1365 struct elfNN_ia64_local_hash_entry *entry1
1366 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1367 struct elfNN_ia64_local_hash_entry *entry2
1368 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1369
1370 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1371 }
1372
1373 /* Create the derived linker hash table. The IA-64 ELF port uses this
1374 derived hash table to keep information specific to the IA-64 ElF
1375 linker (without using static variables). */
1376
1377 static struct bfd_link_hash_table *
1378 elfNN_ia64_hash_table_create (bfd *abfd)
1379 {
1380 struct elfNN_ia64_link_hash_table *ret;
1381
1382 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1383 if (!ret)
1384 return NULL;
1385
1386 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1387 elfNN_ia64_new_elf_hash_entry,
1388 sizeof (struct elfNN_ia64_link_hash_entry),
1389 IA64_ELF_DATA))
1390 {
1391 free (ret);
1392 return NULL;
1393 }
1394
1395 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1396 elfNN_ia64_local_htab_eq, NULL);
1397 ret->loc_hash_memory = objalloc_create ();
1398 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1399 {
1400 free (ret);
1401 return NULL;
1402 }
1403
1404 return &ret->root.root;
1405 }
1406
1407 /* Free the global elfNN_ia64_dyn_sym_info array. */
1408
1409 static bfd_boolean
1410 elfNN_ia64_global_dyn_info_free (void **xentry,
1411 void * unused ATTRIBUTE_UNUSED)
1412 {
1413 struct elfNN_ia64_link_hash_entry *entry
1414 = (struct elfNN_ia64_link_hash_entry *) xentry;
1415
1416 if (entry->info)
1417 {
1418 free (entry->info);
1419 entry->info = NULL;
1420 entry->count = 0;
1421 entry->sorted_count = 0;
1422 entry->size = 0;
1423 }
1424
1425 return TRUE;
1426 }
1427
1428 /* Free the local elfNN_ia64_dyn_sym_info array. */
1429
1430 static bfd_boolean
1431 elfNN_ia64_local_dyn_info_free (void **slot,
1432 void * unused ATTRIBUTE_UNUSED)
1433 {
1434 struct elfNN_ia64_local_hash_entry *entry
1435 = (struct elfNN_ia64_local_hash_entry *) *slot;
1436
1437 if (entry->info)
1438 {
1439 free (entry->info);
1440 entry->info = NULL;
1441 entry->count = 0;
1442 entry->sorted_count = 0;
1443 entry->size = 0;
1444 }
1445
1446 return TRUE;
1447 }
1448
1449 /* Destroy IA-64 linker hash table. */
1450
1451 static void
1452 elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash)
1453 {
1454 struct elfNN_ia64_link_hash_table *ia64_info
1455 = (struct elfNN_ia64_link_hash_table *) hash;
1456 if (ia64_info->loc_hash_table)
1457 {
1458 htab_traverse (ia64_info->loc_hash_table,
1459 elfNN_ia64_local_dyn_info_free, NULL);
1460 htab_delete (ia64_info->loc_hash_table);
1461 }
1462 if (ia64_info->loc_hash_memory)
1463 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1464 elf_link_hash_traverse (&ia64_info->root,
1465 elfNN_ia64_global_dyn_info_free, NULL);
1466 _bfd_elf_link_hash_table_free (hash);
1467 }
1468
1469 /* Traverse both local and global hash tables. */
1470
1471 struct elfNN_ia64_dyn_sym_traverse_data
1472 {
1473 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1474 void * data;
1475 };
1476
1477 static bfd_boolean
1478 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1479 void * xdata)
1480 {
1481 struct elfNN_ia64_link_hash_entry *entry
1482 = (struct elfNN_ia64_link_hash_entry *) xentry;
1483 struct elfNN_ia64_dyn_sym_traverse_data *data
1484 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1485 struct elfNN_ia64_dyn_sym_info *dyn_i;
1486 unsigned int count;
1487
1488 for (count = entry->count, dyn_i = entry->info;
1489 count != 0;
1490 count--, dyn_i++)
1491 if (! (*data->func) (dyn_i, data->data))
1492 return FALSE;
1493 return TRUE;
1494 }
1495
1496 static bfd_boolean
1497 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1498 {
1499 struct elfNN_ia64_local_hash_entry *entry
1500 = (struct elfNN_ia64_local_hash_entry *) *slot;
1501 struct elfNN_ia64_dyn_sym_traverse_data *data
1502 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1503 struct elfNN_ia64_dyn_sym_info *dyn_i;
1504 unsigned int count;
1505
1506 for (count = entry->count, dyn_i = entry->info;
1507 count != 0;
1508 count--, dyn_i++)
1509 if (! (*data->func) (dyn_i, data->data))
1510 return FALSE;
1511 return TRUE;
1512 }
1513
1514 static void
1515 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1516 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1517 void * data)
1518 {
1519 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1520
1521 xdata.func = func;
1522 xdata.data = data;
1523
1524 elf_link_hash_traverse (&ia64_info->root,
1525 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1526 htab_traverse (ia64_info->loc_hash_table,
1527 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1528 }
1529 \f
1530 static bfd_boolean
1531 elfNN_ia64_create_dynamic_sections (bfd *abfd,
1532 struct bfd_link_info *info)
1533 {
1534 struct elfNN_ia64_link_hash_table *ia64_info;
1535 asection *s;
1536
1537 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1538 return FALSE;
1539
1540 ia64_info = elfNN_ia64_hash_table (info);
1541 if (ia64_info == NULL)
1542 return FALSE;
1543
1544 {
1545 flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1546 bfd_set_section_flags (abfd, ia64_info->root.sgot,
1547 SEC_SMALL_DATA | flags);
1548 /* The .got section is always aligned at 8 bytes. */
1549 bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3);
1550 }
1551
1552 if (!get_pltoff (abfd, info, ia64_info))
1553 return FALSE;
1554
1555 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1556 (SEC_ALLOC | SEC_LOAD
1557 | SEC_HAS_CONTENTS
1558 | SEC_IN_MEMORY
1559 | SEC_LINKER_CREATED
1560 | SEC_READONLY));
1561 if (s == NULL
1562 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
1563 return FALSE;
1564 ia64_info->rel_pltoff_sec = s;
1565
1566 return TRUE;
1567 }
1568
1569 /* Find and/or create a hash entry for local symbol. */
1570 static struct elfNN_ia64_local_hash_entry *
1571 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1572 bfd *abfd, const Elf_Internal_Rela *rel,
1573 bfd_boolean create)
1574 {
1575 struct elfNN_ia64_local_hash_entry e, *ret;
1576 asection *sec = abfd->sections;
1577 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1578 ELFNN_R_SYM (rel->r_info));
1579 void **slot;
1580
1581 e.id = sec->id;
1582 e.r_sym = ELFNN_R_SYM (rel->r_info);
1583 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1584 create ? INSERT : NO_INSERT);
1585
1586 if (!slot)
1587 return NULL;
1588
1589 if (*slot)
1590 return (struct elfNN_ia64_local_hash_entry *) *slot;
1591
1592 ret = (struct elfNN_ia64_local_hash_entry *)
1593 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1594 sizeof (struct elfNN_ia64_local_hash_entry));
1595 if (ret)
1596 {
1597 memset (ret, 0, sizeof (*ret));
1598 ret->id = sec->id;
1599 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1600 *slot = ret;
1601 }
1602 return ret;
1603 }
1604
1605 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1606
1607 static int
1608 addend_compare (const void *xp, const void *yp)
1609 {
1610 const struct elfNN_ia64_dyn_sym_info *x
1611 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1612 const struct elfNN_ia64_dyn_sym_info *y
1613 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1614
1615 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1616 }
1617
1618 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1619
1620 static unsigned int
1621 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1622 unsigned int count)
1623 {
1624 bfd_vma curr, prev, got_offset;
1625 unsigned int i, kept, dupes, diff, dest, src, len;
1626
1627 qsort (info, count, sizeof (*info), addend_compare);
1628
1629 /* Find the first duplicate. */
1630 prev = info [0].addend;
1631 got_offset = info [0].got_offset;
1632 for (i = 1; i < count; i++)
1633 {
1634 curr = info [i].addend;
1635 if (curr == prev)
1636 {
1637 /* For duplicates, make sure that GOT_OFFSET is valid. */
1638 if (got_offset == (bfd_vma) -1)
1639 got_offset = info [i].got_offset;
1640 break;
1641 }
1642 got_offset = info [i].got_offset;
1643 prev = curr;
1644 }
1645
1646 /* We may move a block of elements to here. */
1647 dest = i++;
1648
1649 /* Remove duplicates. */
1650 if (i < count)
1651 {
1652 while (i < count)
1653 {
1654 /* For duplicates, make sure that the kept one has a valid
1655 got_offset. */
1656 kept = dest - 1;
1657 if (got_offset != (bfd_vma) -1)
1658 info [kept].got_offset = got_offset;
1659
1660 curr = info [i].addend;
1661 got_offset = info [i].got_offset;
1662
1663 /* Move a block of elements whose first one is different from
1664 the previous. */
1665 if (curr == prev)
1666 {
1667 for (src = i + 1; src < count; src++)
1668 {
1669 if (info [src].addend != curr)
1670 break;
1671 /* For duplicates, make sure that GOT_OFFSET is
1672 valid. */
1673 if (got_offset == (bfd_vma) -1)
1674 got_offset = info [src].got_offset;
1675 }
1676
1677 /* Make sure that the kept one has a valid got_offset. */
1678 if (got_offset != (bfd_vma) -1)
1679 info [kept].got_offset = got_offset;
1680 }
1681 else
1682 src = i;
1683
1684 if (src >= count)
1685 break;
1686
1687 /* Find the next duplicate. SRC will be kept. */
1688 prev = info [src].addend;
1689 got_offset = info [src].got_offset;
1690 for (dupes = src + 1; dupes < count; dupes ++)
1691 {
1692 curr = info [dupes].addend;
1693 if (curr == prev)
1694 {
1695 /* Make sure that got_offset is valid. */
1696 if (got_offset == (bfd_vma) -1)
1697 got_offset = info [dupes].got_offset;
1698
1699 /* For duplicates, make sure that the kept one has
1700 a valid got_offset. */
1701 if (got_offset != (bfd_vma) -1)
1702 info [dupes - 1].got_offset = got_offset;
1703 break;
1704 }
1705 got_offset = info [dupes].got_offset;
1706 prev = curr;
1707 }
1708
1709 /* How much to move. */
1710 len = dupes - src;
1711 i = dupes + 1;
1712
1713 if (len == 1 && dupes < count)
1714 {
1715 /* If we only move 1 element, we combine it with the next
1716 one. There must be at least a duplicate. Find the
1717 next different one. */
1718 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1719 {
1720 if (info [diff].addend != curr)
1721 break;
1722 /* Make sure that got_offset is valid. */
1723 if (got_offset == (bfd_vma) -1)
1724 got_offset = info [diff].got_offset;
1725 }
1726
1727 /* Makre sure that the last duplicated one has an valid
1728 offset. */
1729 BFD_ASSERT (curr == prev);
1730 if (got_offset != (bfd_vma) -1)
1731 info [diff - 1].got_offset = got_offset;
1732
1733 if (diff < count)
1734 {
1735 /* Find the next duplicate. Track the current valid
1736 offset. */
1737 prev = info [diff].addend;
1738 got_offset = info [diff].got_offset;
1739 for (dupes = diff + 1; dupes < count; dupes ++)
1740 {
1741 curr = info [dupes].addend;
1742 if (curr == prev)
1743 {
1744 /* For duplicates, make sure that GOT_OFFSET
1745 is valid. */
1746 if (got_offset == (bfd_vma) -1)
1747 got_offset = info [dupes].got_offset;
1748 break;
1749 }
1750 got_offset = info [dupes].got_offset;
1751 prev = curr;
1752 diff++;
1753 }
1754
1755 len = diff - src + 1;
1756 i = diff + 1;
1757 }
1758 }
1759
1760 memmove (&info [dest], &info [src], len * sizeof (*info));
1761
1762 dest += len;
1763 }
1764
1765 count = dest;
1766 }
1767 else
1768 {
1769 /* When we get here, either there is no duplicate at all or
1770 the only duplicate is the last element. */
1771 if (dest < count)
1772 {
1773 /* If the last element is a duplicate, make sure that the
1774 kept one has a valid got_offset. We also update count. */
1775 if (got_offset != (bfd_vma) -1)
1776 info [dest - 1].got_offset = got_offset;
1777 count = dest;
1778 }
1779 }
1780
1781 return count;
1782 }
1783
1784 /* Find and/or create a descriptor for dynamic symbol info. This will
1785 vary based on global or local symbol, and the addend to the reloc.
1786
1787 We don't sort when inserting. Also, we sort and eliminate
1788 duplicates if there is an unsorted section. Typically, this will
1789 only happen once, because we do all insertions before lookups. We
1790 then use bsearch to do a lookup. This also allows lookups to be
1791 fast. So we have fast insertion (O(log N) due to duplicate check),
1792 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1793 Previously, all lookups were O(N) because of the use of the linked
1794 list and also all insertions were O(N) because of the check for
1795 duplicates. There are some complications here because the array
1796 size grows occasionally, which may add an O(N) factor, but this
1797 should be rare. Also, we free the excess array allocation, which
1798 requires a copy which is O(N), but this only happens once. */
1799
1800 static struct elfNN_ia64_dyn_sym_info *
1801 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1802 struct elf_link_hash_entry *h, bfd *abfd,
1803 const Elf_Internal_Rela *rel, bfd_boolean create)
1804 {
1805 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1806 unsigned int *count_p, *sorted_count_p, *size_p;
1807 unsigned int count, sorted_count, size;
1808 bfd_vma addend = rel ? rel->r_addend : 0;
1809 bfd_size_type amt;
1810
1811 if (h)
1812 {
1813 struct elfNN_ia64_link_hash_entry *global_h;
1814
1815 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1816 info_p = &global_h->info;
1817 count_p = &global_h->count;
1818 sorted_count_p = &global_h->sorted_count;
1819 size_p = &global_h->size;
1820 }
1821 else
1822 {
1823 struct elfNN_ia64_local_hash_entry *loc_h;
1824
1825 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1826 if (!loc_h)
1827 {
1828 BFD_ASSERT (!create);
1829 return NULL;
1830 }
1831
1832 info_p = &loc_h->info;
1833 count_p = &loc_h->count;
1834 sorted_count_p = &loc_h->sorted_count;
1835 size_p = &loc_h->size;
1836 }
1837
1838 count = *count_p;
1839 sorted_count = *sorted_count_p;
1840 size = *size_p;
1841 info = *info_p;
1842 if (create)
1843 {
1844 /* When we create the array, we don't check for duplicates,
1845 except in the previously sorted section if one exists, and
1846 against the last inserted entry. This allows insertions to
1847 be fast. */
1848 if (info)
1849 {
1850 if (sorted_count)
1851 {
1852 /* Try bsearch first on the sorted section. */
1853 key.addend = addend;
1854 dyn_i = bsearch (&key, info, sorted_count,
1855 sizeof (*info), addend_compare);
1856
1857 if (dyn_i)
1858 {
1859 return dyn_i;
1860 }
1861 }
1862
1863 /* Do a quick check for the last inserted entry. */
1864 dyn_i = info + count - 1;
1865 if (dyn_i->addend == addend)
1866 {
1867 return dyn_i;
1868 }
1869 }
1870
1871 if (size == 0)
1872 {
1873 /* It is the very first element. We create the array of size
1874 1. */
1875 size = 1;
1876 amt = size * sizeof (*info);
1877 info = bfd_malloc (amt);
1878 }
1879 else if (size <= count)
1880 {
1881 /* We double the array size every time when we reach the
1882 size limit. */
1883 size += size;
1884 amt = size * sizeof (*info);
1885 info = bfd_realloc (info, amt);
1886 }
1887 else
1888 goto has_space;
1889
1890 if (info == NULL)
1891 return NULL;
1892 *size_p = size;
1893 *info_p = info;
1894
1895 has_space:
1896 /* Append the new one to the array. */
1897 dyn_i = info + count;
1898 memset (dyn_i, 0, sizeof (*dyn_i));
1899 dyn_i->got_offset = (bfd_vma) -1;
1900 dyn_i->addend = addend;
1901
1902 /* We increment count only since the new ones are unsorted and
1903 may have duplicate. */
1904 (*count_p)++;
1905 }
1906 else
1907 {
1908 /* It is a lookup without insertion. Sort array if part of the
1909 array isn't sorted. */
1910 if (count != sorted_count)
1911 {
1912 count = sort_dyn_sym_info (info, count);
1913 *count_p = count;
1914 *sorted_count_p = count;
1915 }
1916
1917 /* Free unused memory. */
1918 if (size != count)
1919 {
1920 amt = count * sizeof (*info);
1921 info = bfd_malloc (amt);
1922 if (info != NULL)
1923 {
1924 memcpy (info, *info_p, amt);
1925 free (*info_p);
1926 *size_p = count;
1927 *info_p = info;
1928 }
1929 }
1930
1931 key.addend = addend;
1932 dyn_i = bsearch (&key, info, count,
1933 sizeof (*info), addend_compare);
1934 }
1935
1936 return dyn_i;
1937 }
1938
1939 static asection *
1940 get_got (bfd *abfd, struct bfd_link_info *info,
1941 struct elfNN_ia64_link_hash_table *ia64_info)
1942 {
1943 asection *got;
1944 bfd *dynobj;
1945
1946 got = ia64_info->root.sgot;
1947 if (!got)
1948 {
1949 flagword flags;
1950
1951 dynobj = ia64_info->root.dynobj;
1952 if (!dynobj)
1953 ia64_info->root.dynobj = dynobj = abfd;
1954 if (!_bfd_elf_create_got_section (dynobj, info))
1955 return 0;
1956
1957 got = ia64_info->root.sgot;
1958
1959 /* The .got section is always aligned at 8 bytes. */
1960 if (!bfd_set_section_alignment (abfd, got, 3))
1961 return 0;
1962
1963 flags = bfd_get_section_flags (abfd, got);
1964 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
1965 }
1966
1967 return got;
1968 }
1969
1970 /* Create function descriptor section (.opd). This section is called .opd
1971 because it contains "official procedure descriptors". The "official"
1972 refers to the fact that these descriptors are used when taking the address
1973 of a procedure, thus ensuring a unique address for each procedure. */
1974
1975 static asection *
1976 get_fptr (bfd *abfd, struct bfd_link_info *info,
1977 struct elfNN_ia64_link_hash_table *ia64_info)
1978 {
1979 asection *fptr;
1980 bfd *dynobj;
1981
1982 fptr = ia64_info->fptr_sec;
1983 if (!fptr)
1984 {
1985 dynobj = ia64_info->root.dynobj;
1986 if (!dynobj)
1987 ia64_info->root.dynobj = dynobj = abfd;
1988
1989 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
1990 (SEC_ALLOC
1991 | SEC_LOAD
1992 | SEC_HAS_CONTENTS
1993 | SEC_IN_MEMORY
1994 | (info->pie ? 0
1995 : SEC_READONLY)
1996 | SEC_LINKER_CREATED));
1997 if (!fptr
1998 || !bfd_set_section_alignment (abfd, fptr, 4))
1999 {
2000 BFD_ASSERT (0);
2001 return NULL;
2002 }
2003
2004 ia64_info->fptr_sec = fptr;
2005
2006 if (info->pie)
2007 {
2008 asection *fptr_rel;
2009 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2010 (SEC_ALLOC | SEC_LOAD
2011 | SEC_HAS_CONTENTS
2012 | SEC_IN_MEMORY
2013 | SEC_LINKER_CREATED
2014 | SEC_READONLY));
2015 if (fptr_rel == NULL
2016 || !bfd_set_section_alignment (abfd, fptr_rel,
2017 LOG_SECTION_ALIGN))
2018 {
2019 BFD_ASSERT (0);
2020 return NULL;
2021 }
2022
2023 ia64_info->rel_fptr_sec = fptr_rel;
2024 }
2025 }
2026
2027 return fptr;
2028 }
2029
2030 static asection *
2031 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2032 struct elfNN_ia64_link_hash_table *ia64_info)
2033 {
2034 asection *pltoff;
2035 bfd *dynobj;
2036
2037 pltoff = ia64_info->pltoff_sec;
2038 if (!pltoff)
2039 {
2040 dynobj = ia64_info->root.dynobj;
2041 if (!dynobj)
2042 ia64_info->root.dynobj = dynobj = abfd;
2043
2044 pltoff = bfd_make_section_anyway_with_flags (dynobj,
2045 ELF_STRING_ia64_pltoff,
2046 (SEC_ALLOC
2047 | SEC_LOAD
2048 | SEC_HAS_CONTENTS
2049 | SEC_IN_MEMORY
2050 | SEC_SMALL_DATA
2051 | SEC_LINKER_CREATED));
2052 if (!pltoff
2053 || !bfd_set_section_alignment (abfd, pltoff, 4))
2054 {
2055 BFD_ASSERT (0);
2056 return NULL;
2057 }
2058
2059 ia64_info->pltoff_sec = pltoff;
2060 }
2061
2062 return pltoff;
2063 }
2064
2065 static asection *
2066 get_reloc_section (bfd *abfd,
2067 struct elfNN_ia64_link_hash_table *ia64_info,
2068 asection *sec, bfd_boolean create)
2069 {
2070 const char *srel_name;
2071 asection *srel;
2072 bfd *dynobj;
2073
2074 srel_name = (bfd_elf_string_from_elf_section
2075 (abfd, elf_elfheader(abfd)->e_shstrndx,
2076 _bfd_elf_single_rel_hdr (sec)->sh_name));
2077 if (srel_name == NULL)
2078 return NULL;
2079
2080 dynobj = ia64_info->root.dynobj;
2081 if (!dynobj)
2082 ia64_info->root.dynobj = dynobj = abfd;
2083
2084 srel = bfd_get_linker_section (dynobj, srel_name);
2085 if (srel == NULL && create)
2086 {
2087 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2088 (SEC_ALLOC | SEC_LOAD
2089 | SEC_HAS_CONTENTS
2090 | SEC_IN_MEMORY
2091 | SEC_LINKER_CREATED
2092 | SEC_READONLY));
2093 if (srel == NULL
2094 || !bfd_set_section_alignment (dynobj, srel,
2095 LOG_SECTION_ALIGN))
2096 return NULL;
2097 }
2098
2099 return srel;
2100 }
2101
2102 static bfd_boolean
2103 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2104 asection *srel, int type, bfd_boolean reltext)
2105 {
2106 struct elfNN_ia64_dyn_reloc_entry *rent;
2107
2108 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2109 if (rent->srel == srel && rent->type == type)
2110 break;
2111
2112 if (!rent)
2113 {
2114 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2115 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2116 if (!rent)
2117 return FALSE;
2118
2119 rent->next = dyn_i->reloc_entries;
2120 rent->srel = srel;
2121 rent->type = type;
2122 rent->count = 0;
2123 dyn_i->reloc_entries = rent;
2124 }
2125 rent->reltext = reltext;
2126 rent->count++;
2127
2128 return TRUE;
2129 }
2130
2131 static bfd_boolean
2132 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2133 asection *sec,
2134 const Elf_Internal_Rela *relocs)
2135 {
2136 struct elfNN_ia64_link_hash_table *ia64_info;
2137 const Elf_Internal_Rela *relend;
2138 Elf_Internal_Shdr *symtab_hdr;
2139 const Elf_Internal_Rela *rel;
2140 asection *got, *fptr, *srel, *pltoff;
2141 enum {
2142 NEED_GOT = 1,
2143 NEED_GOTX = 2,
2144 NEED_FPTR = 4,
2145 NEED_PLTOFF = 8,
2146 NEED_MIN_PLT = 16,
2147 NEED_FULL_PLT = 32,
2148 NEED_DYNREL = 64,
2149 NEED_LTOFF_FPTR = 128,
2150 NEED_TPREL = 256,
2151 NEED_DTPMOD = 512,
2152 NEED_DTPREL = 1024
2153 };
2154 int need_entry;
2155 struct elf_link_hash_entry *h;
2156 unsigned long r_symndx;
2157 bfd_boolean maybe_dynamic;
2158
2159 if (info->relocatable)
2160 return TRUE;
2161
2162 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2163 ia64_info = elfNN_ia64_hash_table (info);
2164 if (ia64_info == NULL)
2165 return FALSE;
2166
2167 got = fptr = srel = pltoff = NULL;
2168
2169 relend = relocs + sec->reloc_count;
2170
2171 /* We scan relocations first to create dynamic relocation arrays. We
2172 modified get_dyn_sym_info to allow fast insertion and support fast
2173 lookup in the next loop. */
2174 for (rel = relocs; rel < relend; ++rel)
2175 {
2176 r_symndx = ELFNN_R_SYM (rel->r_info);
2177 if (r_symndx >= symtab_hdr->sh_info)
2178 {
2179 long indx = r_symndx - symtab_hdr->sh_info;
2180 h = elf_sym_hashes (abfd)[indx];
2181 while (h->root.type == bfd_link_hash_indirect
2182 || h->root.type == bfd_link_hash_warning)
2183 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2184 }
2185 else
2186 h = NULL;
2187
2188 /* We can only get preliminary data on whether a symbol is
2189 locally or externally defined, as not all of the input files
2190 have yet been processed. Do something with what we know, as
2191 this may help reduce memory usage and processing time later. */
2192 maybe_dynamic = (h && ((!info->executable
2193 && (!SYMBOLIC_BIND (info, h)
2194 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2195 || !h->def_regular
2196 || h->root.type == bfd_link_hash_defweak));
2197
2198 need_entry = 0;
2199 switch (ELFNN_R_TYPE (rel->r_info))
2200 {
2201 case R_IA64_TPREL64MSB:
2202 case R_IA64_TPREL64LSB:
2203 if (info->shared || maybe_dynamic)
2204 need_entry = NEED_DYNREL;
2205 break;
2206
2207 case R_IA64_LTOFF_TPREL22:
2208 need_entry = NEED_TPREL;
2209 if (info->shared)
2210 info->flags |= DF_STATIC_TLS;
2211 break;
2212
2213 case R_IA64_DTPREL32MSB:
2214 case R_IA64_DTPREL32LSB:
2215 case R_IA64_DTPREL64MSB:
2216 case R_IA64_DTPREL64LSB:
2217 if (info->shared || maybe_dynamic)
2218 need_entry = NEED_DYNREL;
2219 break;
2220
2221 case R_IA64_LTOFF_DTPREL22:
2222 need_entry = NEED_DTPREL;
2223 break;
2224
2225 case R_IA64_DTPMOD64MSB:
2226 case R_IA64_DTPMOD64LSB:
2227 if (info->shared || maybe_dynamic)
2228 need_entry = NEED_DYNREL;
2229 break;
2230
2231 case R_IA64_LTOFF_DTPMOD22:
2232 need_entry = NEED_DTPMOD;
2233 break;
2234
2235 case R_IA64_LTOFF_FPTR22:
2236 case R_IA64_LTOFF_FPTR64I:
2237 case R_IA64_LTOFF_FPTR32MSB:
2238 case R_IA64_LTOFF_FPTR32LSB:
2239 case R_IA64_LTOFF_FPTR64MSB:
2240 case R_IA64_LTOFF_FPTR64LSB:
2241 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2242 break;
2243
2244 case R_IA64_FPTR64I:
2245 case R_IA64_FPTR32MSB:
2246 case R_IA64_FPTR32LSB:
2247 case R_IA64_FPTR64MSB:
2248 case R_IA64_FPTR64LSB:
2249 if (info->shared || h)
2250 need_entry = NEED_FPTR | NEED_DYNREL;
2251 else
2252 need_entry = NEED_FPTR;
2253 break;
2254
2255 case R_IA64_LTOFF22:
2256 case R_IA64_LTOFF64I:
2257 need_entry = NEED_GOT;
2258 break;
2259
2260 case R_IA64_LTOFF22X:
2261 need_entry = NEED_GOTX;
2262 break;
2263
2264 case R_IA64_PLTOFF22:
2265 case R_IA64_PLTOFF64I:
2266 case R_IA64_PLTOFF64MSB:
2267 case R_IA64_PLTOFF64LSB:
2268 need_entry = NEED_PLTOFF;
2269 if (h)
2270 {
2271 if (maybe_dynamic)
2272 need_entry |= NEED_MIN_PLT;
2273 }
2274 else
2275 {
2276 (*info->callbacks->warning)
2277 (info, _("@pltoff reloc against local symbol"), 0,
2278 abfd, 0, (bfd_vma) 0);
2279 }
2280 break;
2281
2282 case R_IA64_PCREL21B:
2283 case R_IA64_PCREL60B:
2284 /* Depending on where this symbol is defined, we may or may not
2285 need a full plt entry. Only skip if we know we'll not need
2286 the entry -- static or symbolic, and the symbol definition
2287 has already been seen. */
2288 if (maybe_dynamic && rel->r_addend == 0)
2289 need_entry = NEED_FULL_PLT;
2290 break;
2291
2292 case R_IA64_IMM14:
2293 case R_IA64_IMM22:
2294 case R_IA64_IMM64:
2295 case R_IA64_DIR32MSB:
2296 case R_IA64_DIR32LSB:
2297 case R_IA64_DIR64MSB:
2298 case R_IA64_DIR64LSB:
2299 /* Shared objects will always need at least a REL relocation. */
2300 if (info->shared || maybe_dynamic)
2301 need_entry = NEED_DYNREL;
2302 break;
2303
2304 case R_IA64_IPLTMSB:
2305 case R_IA64_IPLTLSB:
2306 /* Shared objects will always need at least a REL relocation. */
2307 if (info->shared || maybe_dynamic)
2308 need_entry = NEED_DYNREL;
2309 break;
2310
2311 case R_IA64_PCREL22:
2312 case R_IA64_PCREL64I:
2313 case R_IA64_PCREL32MSB:
2314 case R_IA64_PCREL32LSB:
2315 case R_IA64_PCREL64MSB:
2316 case R_IA64_PCREL64LSB:
2317 if (maybe_dynamic)
2318 need_entry = NEED_DYNREL;
2319 break;
2320 }
2321
2322 if (!need_entry)
2323 continue;
2324
2325 if ((need_entry & NEED_FPTR) != 0
2326 && rel->r_addend)
2327 {
2328 (*info->callbacks->warning)
2329 (info, _("non-zero addend in @fptr reloc"), 0,
2330 abfd, 0, (bfd_vma) 0);
2331 }
2332
2333 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2334 return FALSE;
2335 }
2336
2337 /* Now, we only do lookup without insertion, which is very fast
2338 with the modified get_dyn_sym_info. */
2339 for (rel = relocs; rel < relend; ++rel)
2340 {
2341 struct elfNN_ia64_dyn_sym_info *dyn_i;
2342 int dynrel_type = R_IA64_NONE;
2343
2344 r_symndx = ELFNN_R_SYM (rel->r_info);
2345 if (r_symndx >= symtab_hdr->sh_info)
2346 {
2347 /* We're dealing with a global symbol -- find its hash entry
2348 and mark it as being referenced. */
2349 long indx = r_symndx - symtab_hdr->sh_info;
2350 h = elf_sym_hashes (abfd)[indx];
2351 while (h->root.type == bfd_link_hash_indirect
2352 || h->root.type == bfd_link_hash_warning)
2353 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2354
2355 /* PR15323, ref flags aren't set for references in the same
2356 object. */
2357 h->root.non_ir_ref = 1;
2358 h->ref_regular = 1;
2359 }
2360 else
2361 h = NULL;
2362
2363 /* We can only get preliminary data on whether a symbol is
2364 locally or externally defined, as not all of the input files
2365 have yet been processed. Do something with what we know, as
2366 this may help reduce memory usage and processing time later. */
2367 maybe_dynamic = (h && ((!info->executable
2368 && (!SYMBOLIC_BIND (info, h)
2369 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2370 || !h->def_regular
2371 || h->root.type == bfd_link_hash_defweak));
2372
2373 need_entry = 0;
2374 switch (ELFNN_R_TYPE (rel->r_info))
2375 {
2376 case R_IA64_TPREL64MSB:
2377 case R_IA64_TPREL64LSB:
2378 if (info->shared || maybe_dynamic)
2379 need_entry = NEED_DYNREL;
2380 dynrel_type = R_IA64_TPREL64LSB;
2381 if (info->shared)
2382 info->flags |= DF_STATIC_TLS;
2383 break;
2384
2385 case R_IA64_LTOFF_TPREL22:
2386 need_entry = NEED_TPREL;
2387 if (info->shared)
2388 info->flags |= DF_STATIC_TLS;
2389 break;
2390
2391 case R_IA64_DTPREL32MSB:
2392 case R_IA64_DTPREL32LSB:
2393 case R_IA64_DTPREL64MSB:
2394 case R_IA64_DTPREL64LSB:
2395 if (info->shared || maybe_dynamic)
2396 need_entry = NEED_DYNREL;
2397 dynrel_type = R_IA64_DTPRELNNLSB;
2398 break;
2399
2400 case R_IA64_LTOFF_DTPREL22:
2401 need_entry = NEED_DTPREL;
2402 break;
2403
2404 case R_IA64_DTPMOD64MSB:
2405 case R_IA64_DTPMOD64LSB:
2406 if (info->shared || maybe_dynamic)
2407 need_entry = NEED_DYNREL;
2408 dynrel_type = R_IA64_DTPMOD64LSB;
2409 break;
2410
2411 case R_IA64_LTOFF_DTPMOD22:
2412 need_entry = NEED_DTPMOD;
2413 break;
2414
2415 case R_IA64_LTOFF_FPTR22:
2416 case R_IA64_LTOFF_FPTR64I:
2417 case R_IA64_LTOFF_FPTR32MSB:
2418 case R_IA64_LTOFF_FPTR32LSB:
2419 case R_IA64_LTOFF_FPTR64MSB:
2420 case R_IA64_LTOFF_FPTR64LSB:
2421 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2422 break;
2423
2424 case R_IA64_FPTR64I:
2425 case R_IA64_FPTR32MSB:
2426 case R_IA64_FPTR32LSB:
2427 case R_IA64_FPTR64MSB:
2428 case R_IA64_FPTR64LSB:
2429 if (info->shared || h)
2430 need_entry = NEED_FPTR | NEED_DYNREL;
2431 else
2432 need_entry = NEED_FPTR;
2433 dynrel_type = R_IA64_FPTRNNLSB;
2434 break;
2435
2436 case R_IA64_LTOFF22:
2437 case R_IA64_LTOFF64I:
2438 need_entry = NEED_GOT;
2439 break;
2440
2441 case R_IA64_LTOFF22X:
2442 need_entry = NEED_GOTX;
2443 break;
2444
2445 case R_IA64_PLTOFF22:
2446 case R_IA64_PLTOFF64I:
2447 case R_IA64_PLTOFF64MSB:
2448 case R_IA64_PLTOFF64LSB:
2449 need_entry = NEED_PLTOFF;
2450 if (h)
2451 {
2452 if (maybe_dynamic)
2453 need_entry |= NEED_MIN_PLT;
2454 }
2455 break;
2456
2457 case R_IA64_PCREL21B:
2458 case R_IA64_PCREL60B:
2459 /* Depending on where this symbol is defined, we may or may not
2460 need a full plt entry. Only skip if we know we'll not need
2461 the entry -- static or symbolic, and the symbol definition
2462 has already been seen. */
2463 if (maybe_dynamic && rel->r_addend == 0)
2464 need_entry = NEED_FULL_PLT;
2465 break;
2466
2467 case R_IA64_IMM14:
2468 case R_IA64_IMM22:
2469 case R_IA64_IMM64:
2470 case R_IA64_DIR32MSB:
2471 case R_IA64_DIR32LSB:
2472 case R_IA64_DIR64MSB:
2473 case R_IA64_DIR64LSB:
2474 /* Shared objects will always need at least a REL relocation. */
2475 if (info->shared || maybe_dynamic)
2476 need_entry = NEED_DYNREL;
2477 dynrel_type = R_IA64_DIRNNLSB;
2478 break;
2479
2480 case R_IA64_IPLTMSB:
2481 case R_IA64_IPLTLSB:
2482 /* Shared objects will always need at least a REL relocation. */
2483 if (info->shared || maybe_dynamic)
2484 need_entry = NEED_DYNREL;
2485 dynrel_type = R_IA64_IPLTLSB;
2486 break;
2487
2488 case R_IA64_PCREL22:
2489 case R_IA64_PCREL64I:
2490 case R_IA64_PCREL32MSB:
2491 case R_IA64_PCREL32LSB:
2492 case R_IA64_PCREL64MSB:
2493 case R_IA64_PCREL64LSB:
2494 if (maybe_dynamic)
2495 need_entry = NEED_DYNREL;
2496 dynrel_type = R_IA64_PCRELNNLSB;
2497 break;
2498 }
2499
2500 if (!need_entry)
2501 continue;
2502
2503 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2504
2505 /* Record whether or not this is a local symbol. */
2506 dyn_i->h = h;
2507
2508 /* Create what's needed. */
2509 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2510 | NEED_DTPMOD | NEED_DTPREL))
2511 {
2512 if (!got)
2513 {
2514 got = get_got (abfd, info, ia64_info);
2515 if (!got)
2516 return FALSE;
2517 }
2518 if (need_entry & NEED_GOT)
2519 dyn_i->want_got = 1;
2520 if (need_entry & NEED_GOTX)
2521 dyn_i->want_gotx = 1;
2522 if (need_entry & NEED_TPREL)
2523 dyn_i->want_tprel = 1;
2524 if (need_entry & NEED_DTPMOD)
2525 dyn_i->want_dtpmod = 1;
2526 if (need_entry & NEED_DTPREL)
2527 dyn_i->want_dtprel = 1;
2528 }
2529 if (need_entry & NEED_FPTR)
2530 {
2531 if (!fptr)
2532 {
2533 fptr = get_fptr (abfd, info, ia64_info);
2534 if (!fptr)
2535 return FALSE;
2536 }
2537
2538 /* FPTRs for shared libraries are allocated by the dynamic
2539 linker. Make sure this local symbol will appear in the
2540 dynamic symbol table. */
2541 if (!h && info->shared)
2542 {
2543 if (! (bfd_elf_link_record_local_dynamic_symbol
2544 (info, abfd, (long) r_symndx)))
2545 return FALSE;
2546 }
2547
2548 dyn_i->want_fptr = 1;
2549 }
2550 if (need_entry & NEED_LTOFF_FPTR)
2551 dyn_i->want_ltoff_fptr = 1;
2552 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2553 {
2554 if (!ia64_info->root.dynobj)
2555 ia64_info->root.dynobj = abfd;
2556 h->needs_plt = 1;
2557 dyn_i->want_plt = 1;
2558 }
2559 if (need_entry & NEED_FULL_PLT)
2560 dyn_i->want_plt2 = 1;
2561 if (need_entry & NEED_PLTOFF)
2562 {
2563 /* This is needed here, in case @pltoff is used in a non-shared
2564 link. */
2565 if (!pltoff)
2566 {
2567 pltoff = get_pltoff (abfd, info, ia64_info);
2568 if (!pltoff)
2569 return FALSE;
2570 }
2571
2572 dyn_i->want_pltoff = 1;
2573 }
2574 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2575 {
2576 if (!srel)
2577 {
2578 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2579 if (!srel)
2580 return FALSE;
2581 }
2582 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2583 (sec->flags & SEC_READONLY) != 0))
2584 return FALSE;
2585 }
2586 }
2587
2588 return TRUE;
2589 }
2590
2591 /* For cleanliness, and potentially faster dynamic loading, allocate
2592 external GOT entries first. */
2593
2594 static bfd_boolean
2595 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2596 void * data)
2597 {
2598 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2599
2600 if ((dyn_i->want_got || dyn_i->want_gotx)
2601 && ! dyn_i->want_fptr
2602 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2603 {
2604 dyn_i->got_offset = x->ofs;
2605 x->ofs += 8;
2606 }
2607 if (dyn_i->want_tprel)
2608 {
2609 dyn_i->tprel_offset = x->ofs;
2610 x->ofs += 8;
2611 }
2612 if (dyn_i->want_dtpmod)
2613 {
2614 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2615 {
2616 dyn_i->dtpmod_offset = x->ofs;
2617 x->ofs += 8;
2618 }
2619 else
2620 {
2621 struct elfNN_ia64_link_hash_table *ia64_info;
2622
2623 ia64_info = elfNN_ia64_hash_table (x->info);
2624 if (ia64_info == NULL)
2625 return FALSE;
2626
2627 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2628 {
2629 ia64_info->self_dtpmod_offset = x->ofs;
2630 x->ofs += 8;
2631 }
2632 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2633 }
2634 }
2635 if (dyn_i->want_dtprel)
2636 {
2637 dyn_i->dtprel_offset = x->ofs;
2638 x->ofs += 8;
2639 }
2640 return TRUE;
2641 }
2642
2643 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2644
2645 static bfd_boolean
2646 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2647 void * data)
2648 {
2649 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2650
2651 if (dyn_i->want_got
2652 && dyn_i->want_fptr
2653 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2654 {
2655 dyn_i->got_offset = x->ofs;
2656 x->ofs += 8;
2657 }
2658 return TRUE;
2659 }
2660
2661 /* Lastly, allocate all the GOT entries for local data. */
2662
2663 static bfd_boolean
2664 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2665 void * data)
2666 {
2667 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2668
2669 if ((dyn_i->want_got || dyn_i->want_gotx)
2670 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2671 {
2672 dyn_i->got_offset = x->ofs;
2673 x->ofs += 8;
2674 }
2675 return TRUE;
2676 }
2677
2678 /* Search for the index of a global symbol in it's defining object file. */
2679
2680 static long
2681 global_sym_index (struct elf_link_hash_entry *h)
2682 {
2683 struct elf_link_hash_entry **p;
2684 bfd *obj;
2685
2686 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2687 || h->root.type == bfd_link_hash_defweak);
2688
2689 obj = h->root.u.def.section->owner;
2690 for (p = elf_sym_hashes (obj); *p != h; ++p)
2691 continue;
2692
2693 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2694 }
2695
2696 /* Allocate function descriptors. We can do these for every function
2697 in a main executable that is not exported. */
2698
2699 static bfd_boolean
2700 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2701 {
2702 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2703
2704 if (dyn_i->want_fptr)
2705 {
2706 struct elf_link_hash_entry *h = dyn_i->h;
2707
2708 if (h)
2709 while (h->root.type == bfd_link_hash_indirect
2710 || h->root.type == bfd_link_hash_warning)
2711 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2712
2713 if (!x->info->executable
2714 && (!h
2715 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2716 || (h->root.type != bfd_link_hash_undefweak
2717 && h->root.type != bfd_link_hash_undefined)))
2718 {
2719 if (h && h->dynindx == -1)
2720 {
2721 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2722 || (h->root.type == bfd_link_hash_defweak));
2723
2724 if (!bfd_elf_link_record_local_dynamic_symbol
2725 (x->info, h->root.u.def.section->owner,
2726 global_sym_index (h)))
2727 return FALSE;
2728 }
2729
2730 dyn_i->want_fptr = 0;
2731 }
2732 else if (h == NULL || h->dynindx == -1)
2733 {
2734 dyn_i->fptr_offset = x->ofs;
2735 x->ofs += 16;
2736 }
2737 else
2738 dyn_i->want_fptr = 0;
2739 }
2740 return TRUE;
2741 }
2742
2743 /* Allocate all the minimal PLT entries. */
2744
2745 static bfd_boolean
2746 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2747 void * data)
2748 {
2749 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2750
2751 if (dyn_i->want_plt)
2752 {
2753 struct elf_link_hash_entry *h = dyn_i->h;
2754
2755 if (h)
2756 while (h->root.type == bfd_link_hash_indirect
2757 || h->root.type == bfd_link_hash_warning)
2758 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2759
2760 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2761 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2762 {
2763 bfd_size_type offset = x->ofs;
2764 if (offset == 0)
2765 offset = PLT_HEADER_SIZE;
2766 dyn_i->plt_offset = offset;
2767 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2768
2769 dyn_i->want_pltoff = 1;
2770 }
2771 else
2772 {
2773 dyn_i->want_plt = 0;
2774 dyn_i->want_plt2 = 0;
2775 }
2776 }
2777 return TRUE;
2778 }
2779
2780 /* Allocate all the full PLT entries. */
2781
2782 static bfd_boolean
2783 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2784 void * data)
2785 {
2786 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2787
2788 if (dyn_i->want_plt2)
2789 {
2790 struct elf_link_hash_entry *h = dyn_i->h;
2791 bfd_size_type ofs = x->ofs;
2792
2793 dyn_i->plt2_offset = ofs;
2794 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2795
2796 while (h->root.type == bfd_link_hash_indirect
2797 || h->root.type == bfd_link_hash_warning)
2798 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2799 dyn_i->h->plt.offset = ofs;
2800 }
2801 return TRUE;
2802 }
2803
2804 /* Allocate all the PLTOFF entries requested by relocations and
2805 plt entries. We can't share space with allocated FPTR entries,
2806 because the latter are not necessarily addressable by the GP.
2807 ??? Relaxation might be able to determine that they are. */
2808
2809 static bfd_boolean
2810 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2811 void * data)
2812 {
2813 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2814
2815 if (dyn_i->want_pltoff)
2816 {
2817 dyn_i->pltoff_offset = x->ofs;
2818 x->ofs += 16;
2819 }
2820 return TRUE;
2821 }
2822
2823 /* Allocate dynamic relocations for those symbols that turned out
2824 to be dynamic. */
2825
2826 static bfd_boolean
2827 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2828 void * data)
2829 {
2830 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2831 struct elfNN_ia64_link_hash_table *ia64_info;
2832 struct elfNN_ia64_dyn_reloc_entry *rent;
2833 bfd_boolean dynamic_symbol, shared, resolved_zero;
2834
2835 ia64_info = elfNN_ia64_hash_table (x->info);
2836 if (ia64_info == NULL)
2837 return FALSE;
2838
2839 /* Note that this can't be used in relation to FPTR relocs below. */
2840 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2841
2842 shared = x->info->shared;
2843 resolved_zero = (dyn_i->h
2844 && ELF_ST_VISIBILITY (dyn_i->h->other)
2845 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2846
2847 /* Take care of the GOT and PLT relocations. */
2848
2849 if ((!resolved_zero
2850 && (dynamic_symbol || shared)
2851 && (dyn_i->want_got || dyn_i->want_gotx))
2852 || (dyn_i->want_ltoff_fptr
2853 && dyn_i->h
2854 && dyn_i->h->dynindx != -1))
2855 {
2856 if (!dyn_i->want_ltoff_fptr
2857 || !x->info->pie
2858 || dyn_i->h == NULL
2859 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2860 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2861 }
2862 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2863 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2864 if (dynamic_symbol && dyn_i->want_dtpmod)
2865 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2866 if (dynamic_symbol && dyn_i->want_dtprel)
2867 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2868
2869 if (x->only_got)
2870 return TRUE;
2871
2872 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2873 {
2874 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2875 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2876 }
2877
2878 if (!resolved_zero && dyn_i->want_pltoff)
2879 {
2880 bfd_size_type t = 0;
2881
2882 /* Dynamic symbols get one IPLT relocation. Local symbols in
2883 shared libraries get two REL relocations. Local symbols in
2884 main applications get nothing. */
2885 if (dynamic_symbol)
2886 t = sizeof (ElfNN_External_Rela);
2887 else if (shared)
2888 t = 2 * sizeof (ElfNN_External_Rela);
2889
2890 ia64_info->rel_pltoff_sec->size += t;
2891 }
2892
2893 /* Take care of the normal data relocations. */
2894
2895 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2896 {
2897 int count = rent->count;
2898
2899 switch (rent->type)
2900 {
2901 case R_IA64_FPTR32LSB:
2902 case R_IA64_FPTR64LSB:
2903 /* Allocate one iff !want_fptr and not PIE, which by this point
2904 will be true only if we're actually allocating one statically
2905 in the main executable. Position independent executables
2906 need a relative reloc. */
2907 if (dyn_i->want_fptr && !x->info->pie)
2908 continue;
2909 break;
2910 case R_IA64_PCREL32LSB:
2911 case R_IA64_PCREL64LSB:
2912 if (!dynamic_symbol)
2913 continue;
2914 break;
2915 case R_IA64_DIR32LSB:
2916 case R_IA64_DIR64LSB:
2917 if (!dynamic_symbol && !shared)
2918 continue;
2919 break;
2920 case R_IA64_IPLTLSB:
2921 if (!dynamic_symbol && !shared)
2922 continue;
2923 /* Use two REL relocations for IPLT relocations
2924 against local symbols. */
2925 if (!dynamic_symbol)
2926 count *= 2;
2927 break;
2928 case R_IA64_DTPREL32LSB:
2929 case R_IA64_TPREL64LSB:
2930 case R_IA64_DTPREL64LSB:
2931 case R_IA64_DTPMOD64LSB:
2932 break;
2933 default:
2934 abort ();
2935 }
2936 if (rent->reltext)
2937 ia64_info->reltext = 1;
2938 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2939 }
2940
2941 return TRUE;
2942 }
2943
2944 static bfd_boolean
2945 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2946 struct elf_link_hash_entry *h)
2947 {
2948 /* ??? Undefined symbols with PLT entries should be re-defined
2949 to be the PLT entry. */
2950
2951 /* If this is a weak symbol, and there is a real definition, the
2952 processor independent code will have arranged for us to see the
2953 real definition first, and we can just use the same value. */
2954 if (h->u.weakdef != NULL)
2955 {
2956 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2957 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2958 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2959 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2960 return TRUE;
2961 }
2962
2963 /* If this is a reference to a symbol defined by a dynamic object which
2964 is not a function, we might allocate the symbol in our .dynbss section
2965 and allocate a COPY dynamic relocation.
2966
2967 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2968 of hackery. */
2969
2970 return TRUE;
2971 }
2972
2973 static bfd_boolean
2974 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2975 struct bfd_link_info *info)
2976 {
2977 struct elfNN_ia64_allocate_data data;
2978 struct elfNN_ia64_link_hash_table *ia64_info;
2979 asection *sec;
2980 bfd *dynobj;
2981 bfd_boolean relplt = FALSE;
2982
2983 dynobj = elf_hash_table(info)->dynobj;
2984 ia64_info = elfNN_ia64_hash_table (info);
2985 if (ia64_info == NULL)
2986 return FALSE;
2987 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2988 BFD_ASSERT(dynobj != NULL);
2989 data.info = info;
2990
2991 /* Set the contents of the .interp section to the interpreter. */
2992 if (ia64_info->root.dynamic_sections_created
2993 && info->executable)
2994 {
2995 sec = bfd_get_linker_section (dynobj, ".interp");
2996 BFD_ASSERT (sec != NULL);
2997 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2998 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2999 }
3000
3001 /* Allocate the GOT entries. */
3002
3003 if (ia64_info->root.sgot)
3004 {
3005 data.ofs = 0;
3006 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3007 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3008 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3009 ia64_info->root.sgot->size = data.ofs;
3010 }
3011
3012 /* Allocate the FPTR entries. */
3013
3014 if (ia64_info->fptr_sec)
3015 {
3016 data.ofs = 0;
3017 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3018 ia64_info->fptr_sec->size = data.ofs;
3019 }
3020
3021 /* Now that we've seen all of the input files, we can decide which
3022 symbols need plt entries. Allocate the minimal PLT entries first.
3023 We do this even though dynamic_sections_created may be FALSE, because
3024 this has the side-effect of clearing want_plt and want_plt2. */
3025
3026 data.ofs = 0;
3027 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3028
3029 ia64_info->minplt_entries = 0;
3030 if (data.ofs)
3031 {
3032 ia64_info->minplt_entries
3033 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3034 }
3035
3036 /* Align the pointer for the plt2 entries. */
3037 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3038
3039 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3040 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3041 {
3042 /* FIXME: we always reserve the memory for dynamic linker even if
3043 there are no PLT entries since dynamic linker may assume the
3044 reserved memory always exists. */
3045
3046 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3047
3048 ia64_info->root.splt->size = data.ofs;
3049
3050 /* If we've got a .plt, we need some extra memory for the dynamic
3051 linker. We stuff these in .got.plt. */
3052 sec = bfd_get_linker_section (dynobj, ".got.plt");
3053 sec->size = 8 * PLT_RESERVED_WORDS;
3054 }
3055
3056 /* Allocate the PLTOFF entries. */
3057
3058 if (ia64_info->pltoff_sec)
3059 {
3060 data.ofs = 0;
3061 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3062 ia64_info->pltoff_sec->size = data.ofs;
3063 }
3064
3065 if (ia64_info->root.dynamic_sections_created)
3066 {
3067 /* Allocate space for the dynamic relocations that turned out to be
3068 required. */
3069
3070 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3071 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3072 data.only_got = FALSE;
3073 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3074 }
3075
3076 /* We have now determined the sizes of the various dynamic sections.
3077 Allocate memory for them. */
3078 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3079 {
3080 bfd_boolean strip;
3081
3082 if (!(sec->flags & SEC_LINKER_CREATED))
3083 continue;
3084
3085 /* If we don't need this section, strip it from the output file.
3086 There were several sections primarily related to dynamic
3087 linking that must be create before the linker maps input
3088 sections to output sections. The linker does that before
3089 bfd_elf_size_dynamic_sections is called, and it is that
3090 function which decides whether anything needs to go into
3091 these sections. */
3092
3093 strip = (sec->size == 0);
3094
3095 if (sec == ia64_info->root.sgot)
3096 strip = FALSE;
3097 else if (sec == ia64_info->root.srelgot)
3098 {
3099 if (strip)
3100 ia64_info->root.srelgot = NULL;
3101 else
3102 /* We use the reloc_count field as a counter if we need to
3103 copy relocs into the output file. */
3104 sec->reloc_count = 0;
3105 }
3106 else if (sec == ia64_info->fptr_sec)
3107 {
3108 if (strip)
3109 ia64_info->fptr_sec = NULL;
3110 }
3111 else if (sec == ia64_info->rel_fptr_sec)
3112 {
3113 if (strip)
3114 ia64_info->rel_fptr_sec = NULL;
3115 else
3116 /* We use the reloc_count field as a counter if we need to
3117 copy relocs into the output file. */
3118 sec->reloc_count = 0;
3119 }
3120 else if (sec == ia64_info->root.splt)
3121 {
3122 if (strip)
3123 ia64_info->root.splt = NULL;
3124 }
3125 else if (sec == ia64_info->pltoff_sec)
3126 {
3127 if (strip)
3128 ia64_info->pltoff_sec = NULL;
3129 }
3130 else if (sec == ia64_info->rel_pltoff_sec)
3131 {
3132 if (strip)
3133 ia64_info->rel_pltoff_sec = NULL;
3134 else
3135 {
3136 relplt = TRUE;
3137 /* We use the reloc_count field as a counter if we need to
3138 copy relocs into the output file. */
3139 sec->reloc_count = 0;
3140 }
3141 }
3142 else
3143 {
3144 const char *name;
3145
3146 /* It's OK to base decisions on the section name, because none
3147 of the dynobj section names depend upon the input files. */
3148 name = bfd_get_section_name (dynobj, sec);
3149
3150 if (strcmp (name, ".got.plt") == 0)
3151 strip = FALSE;
3152 else if (CONST_STRNEQ (name, ".rel"))
3153 {
3154 if (!strip)
3155 {
3156 /* We use the reloc_count field as a counter if we need to
3157 copy relocs into the output file. */
3158 sec->reloc_count = 0;
3159 }
3160 }
3161 else
3162 continue;
3163 }
3164
3165 if (strip)
3166 sec->flags |= SEC_EXCLUDE;
3167 else
3168 {
3169 /* Allocate memory for the section contents. */
3170 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3171 if (sec->contents == NULL && sec->size != 0)
3172 return FALSE;
3173 }
3174 }
3175
3176 if (elf_hash_table (info)->dynamic_sections_created)
3177 {
3178 /* Add some entries to the .dynamic section. We fill in the values
3179 later (in finish_dynamic_sections) but we must add the entries now
3180 so that we get the correct size for the .dynamic section. */
3181
3182 if (info->executable)
3183 {
3184 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3185 by the debugger. */
3186 #define add_dynamic_entry(TAG, VAL) \
3187 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3188
3189 if (!add_dynamic_entry (DT_DEBUG, 0))
3190 return FALSE;
3191 }
3192
3193 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3194 return FALSE;
3195 if (!add_dynamic_entry (DT_PLTGOT, 0))
3196 return FALSE;
3197
3198 if (relplt)
3199 {
3200 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3201 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3202 || !add_dynamic_entry (DT_JMPREL, 0))
3203 return FALSE;
3204 }
3205
3206 if (!add_dynamic_entry (DT_RELA, 0)
3207 || !add_dynamic_entry (DT_RELASZ, 0)
3208 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3209 return FALSE;
3210
3211 if (ia64_info->reltext)
3212 {
3213 if (!add_dynamic_entry (DT_TEXTREL, 0))
3214 return FALSE;
3215 info->flags |= DF_TEXTREL;
3216 }
3217 }
3218
3219 /* ??? Perhaps force __gp local. */
3220
3221 return TRUE;
3222 }
3223
3224 static void
3225 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3226 asection *sec, asection *srel,
3227 bfd_vma offset, unsigned int type,
3228 long dynindx, bfd_vma addend)
3229 {
3230 Elf_Internal_Rela outrel;
3231 bfd_byte *loc;
3232
3233 BFD_ASSERT (dynindx != -1);
3234 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3235 outrel.r_addend = addend;
3236 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3237 if (outrel.r_offset >= (bfd_vma) -2)
3238 {
3239 /* Run for the hills. We shouldn't be outputting a relocation
3240 for this. So do what everyone else does and output a no-op. */
3241 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3242 outrel.r_addend = 0;
3243 outrel.r_offset = 0;
3244 }
3245 else
3246 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3247
3248 loc = srel->contents;
3249 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3250 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3251 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3252 }
3253
3254 /* Store an entry for target address TARGET_ADDR in the linkage table
3255 and return the gp-relative address of the linkage table entry. */
3256
3257 static bfd_vma
3258 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3259 struct elfNN_ia64_dyn_sym_info *dyn_i,
3260 long dynindx, bfd_vma addend, bfd_vma value,
3261 unsigned int dyn_r_type)
3262 {
3263 struct elfNN_ia64_link_hash_table *ia64_info;
3264 asection *got_sec;
3265 bfd_boolean done;
3266 bfd_vma got_offset;
3267
3268 ia64_info = elfNN_ia64_hash_table (info);
3269 if (ia64_info == NULL)
3270 return 0;
3271
3272 got_sec = ia64_info->root.sgot;
3273
3274 switch (dyn_r_type)
3275 {
3276 case R_IA64_TPREL64LSB:
3277 done = dyn_i->tprel_done;
3278 dyn_i->tprel_done = TRUE;
3279 got_offset = dyn_i->tprel_offset;
3280 break;
3281 case R_IA64_DTPMOD64LSB:
3282 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3283 {
3284 done = dyn_i->dtpmod_done;
3285 dyn_i->dtpmod_done = TRUE;
3286 }
3287 else
3288 {
3289 done = ia64_info->self_dtpmod_done;
3290 ia64_info->self_dtpmod_done = TRUE;
3291 dynindx = 0;
3292 }
3293 got_offset = dyn_i->dtpmod_offset;
3294 break;
3295 case R_IA64_DTPREL32LSB:
3296 case R_IA64_DTPREL64LSB:
3297 done = dyn_i->dtprel_done;
3298 dyn_i->dtprel_done = TRUE;
3299 got_offset = dyn_i->dtprel_offset;
3300 break;
3301 default:
3302 done = dyn_i->got_done;
3303 dyn_i->got_done = TRUE;
3304 got_offset = dyn_i->got_offset;
3305 break;
3306 }
3307
3308 BFD_ASSERT ((got_offset & 7) == 0);
3309
3310 if (! done)
3311 {
3312 /* Store the target address in the linkage table entry. */
3313 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3314
3315 /* Install a dynamic relocation if needed. */
3316 if (((info->shared
3317 && (!dyn_i->h
3318 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3319 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3320 && dyn_r_type != R_IA64_DTPREL32LSB
3321 && dyn_r_type != R_IA64_DTPREL64LSB)
3322 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3323 || (dynindx != -1
3324 && (dyn_r_type == R_IA64_FPTR32LSB
3325 || dyn_r_type == R_IA64_FPTR64LSB)))
3326 && (!dyn_i->want_ltoff_fptr
3327 || !info->pie
3328 || !dyn_i->h
3329 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3330 {
3331 if (dynindx == -1
3332 && dyn_r_type != R_IA64_TPREL64LSB
3333 && dyn_r_type != R_IA64_DTPMOD64LSB
3334 && dyn_r_type != R_IA64_DTPREL32LSB
3335 && dyn_r_type != R_IA64_DTPREL64LSB)
3336 {
3337 dyn_r_type = R_IA64_RELNNLSB;
3338 dynindx = 0;
3339 addend = value;
3340 }
3341
3342 if (bfd_big_endian (abfd))
3343 {
3344 switch (dyn_r_type)
3345 {
3346 case R_IA64_REL32LSB:
3347 dyn_r_type = R_IA64_REL32MSB;
3348 break;
3349 case R_IA64_DIR32LSB:
3350 dyn_r_type = R_IA64_DIR32MSB;
3351 break;
3352 case R_IA64_FPTR32LSB:
3353 dyn_r_type = R_IA64_FPTR32MSB;
3354 break;
3355 case R_IA64_DTPREL32LSB:
3356 dyn_r_type = R_IA64_DTPREL32MSB;
3357 break;
3358 case R_IA64_REL64LSB:
3359 dyn_r_type = R_IA64_REL64MSB;
3360 break;
3361 case R_IA64_DIR64LSB:
3362 dyn_r_type = R_IA64_DIR64MSB;
3363 break;
3364 case R_IA64_FPTR64LSB:
3365 dyn_r_type = R_IA64_FPTR64MSB;
3366 break;
3367 case R_IA64_TPREL64LSB:
3368 dyn_r_type = R_IA64_TPREL64MSB;
3369 break;
3370 case R_IA64_DTPMOD64LSB:
3371 dyn_r_type = R_IA64_DTPMOD64MSB;
3372 break;
3373 case R_IA64_DTPREL64LSB:
3374 dyn_r_type = R_IA64_DTPREL64MSB;
3375 break;
3376 default:
3377 BFD_ASSERT (FALSE);
3378 break;
3379 }
3380 }
3381
3382 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3383 ia64_info->root.srelgot,
3384 got_offset, dyn_r_type,
3385 dynindx, addend);
3386 }
3387 }
3388
3389 /* Return the address of the linkage table entry. */
3390 value = (got_sec->output_section->vma
3391 + got_sec->output_offset
3392 + got_offset);
3393
3394 return value;
3395 }
3396
3397 /* Fill in a function descriptor consisting of the function's code
3398 address and its global pointer. Return the descriptor's address. */
3399
3400 static bfd_vma
3401 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3402 struct elfNN_ia64_dyn_sym_info *dyn_i,
3403 bfd_vma value)
3404 {
3405 struct elfNN_ia64_link_hash_table *ia64_info;
3406 asection *fptr_sec;
3407
3408 ia64_info = elfNN_ia64_hash_table (info);
3409 if (ia64_info == NULL)
3410 return 0;
3411
3412 fptr_sec = ia64_info->fptr_sec;
3413
3414 if (!dyn_i->fptr_done)
3415 {
3416 dyn_i->fptr_done = 1;
3417
3418 /* Fill in the function descriptor. */
3419 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3420 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3421 fptr_sec->contents + dyn_i->fptr_offset + 8);
3422 if (ia64_info->rel_fptr_sec)
3423 {
3424 Elf_Internal_Rela outrel;
3425 bfd_byte *loc;
3426
3427 if (bfd_little_endian (abfd))
3428 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3429 else
3430 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3431 outrel.r_addend = value;
3432 outrel.r_offset = (fptr_sec->output_section->vma
3433 + fptr_sec->output_offset
3434 + dyn_i->fptr_offset);
3435 loc = ia64_info->rel_fptr_sec->contents;
3436 loc += ia64_info->rel_fptr_sec->reloc_count++
3437 * sizeof (ElfNN_External_Rela);
3438 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3439 }
3440 }
3441
3442 /* Return the descriptor's address. */
3443 value = (fptr_sec->output_section->vma
3444 + fptr_sec->output_offset
3445 + dyn_i->fptr_offset);
3446
3447 return value;
3448 }
3449
3450 /* Fill in a PLTOFF entry consisting of the function's code address
3451 and its global pointer. Return the descriptor's address. */
3452
3453 static bfd_vma
3454 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3455 struct elfNN_ia64_dyn_sym_info *dyn_i,
3456 bfd_vma value, bfd_boolean is_plt)
3457 {
3458 struct elfNN_ia64_link_hash_table *ia64_info;
3459 asection *pltoff_sec;
3460
3461 ia64_info = elfNN_ia64_hash_table (info);
3462 if (ia64_info == NULL)
3463 return 0;
3464
3465 pltoff_sec = ia64_info->pltoff_sec;
3466
3467 /* Don't do anything if this symbol uses a real PLT entry. In
3468 that case, we'll fill this in during finish_dynamic_symbol. */
3469 if ((! dyn_i->want_plt || is_plt)
3470 && !dyn_i->pltoff_done)
3471 {
3472 bfd_vma gp = _bfd_get_gp_value (abfd);
3473
3474 /* Fill in the function descriptor. */
3475 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3476 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3477
3478 /* Install dynamic relocations if needed. */
3479 if (!is_plt
3480 && info->shared
3481 && (!dyn_i->h
3482 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3483 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3484 {
3485 unsigned int dyn_r_type;
3486
3487 if (bfd_big_endian (abfd))
3488 dyn_r_type = R_IA64_RELNNMSB;
3489 else
3490 dyn_r_type = R_IA64_RELNNLSB;
3491
3492 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3493 ia64_info->rel_pltoff_sec,
3494 dyn_i->pltoff_offset,
3495 dyn_r_type, 0, value);
3496 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3497 ia64_info->rel_pltoff_sec,
3498 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3499 dyn_r_type, 0, gp);
3500 }
3501
3502 dyn_i->pltoff_done = 1;
3503 }
3504
3505 /* Return the descriptor's address. */
3506 value = (pltoff_sec->output_section->vma
3507 + pltoff_sec->output_offset
3508 + dyn_i->pltoff_offset);
3509
3510 return value;
3511 }
3512
3513 /* Return the base VMA address which should be subtracted from real addresses
3514 when resolving @tprel() relocation.
3515 Main program TLS (whose template starts at PT_TLS p_vaddr)
3516 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3517
3518 static bfd_vma
3519 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3520 {
3521 asection *tls_sec = elf_hash_table (info)->tls_sec;
3522 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3523 tls_sec->alignment_power);
3524 }
3525
3526 /* Return the base VMA address which should be subtracted from real addresses
3527 when resolving @dtprel() relocation.
3528 This is PT_TLS segment p_vaddr. */
3529
3530 static bfd_vma
3531 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3532 {
3533 return elf_hash_table (info)->tls_sec->vma;
3534 }
3535
3536 /* Called through qsort to sort the .IA_64.unwind section during a
3537 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3538 to the output bfd so we can do proper endianness frobbing. */
3539
3540 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3541
3542 static int
3543 elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3544 {
3545 bfd_vma av, bv;
3546
3547 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3548 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3549
3550 return (av < bv ? -1 : av > bv ? 1 : 0);
3551 }
3552
3553 /* Make sure we've got ourselves a nice fat __gp value. */
3554 static bfd_boolean
3555 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3556 {
3557 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3558 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3559 struct elf_link_hash_entry *gp;
3560 bfd_vma gp_val;
3561 asection *os;
3562 struct elfNN_ia64_link_hash_table *ia64_info;
3563
3564 ia64_info = elfNN_ia64_hash_table (info);
3565 if (ia64_info == NULL)
3566 return FALSE;
3567
3568 /* Find the min and max vma of all sections marked short. Also collect
3569 min and max vma of any type, for use in selecting a nice gp. */
3570 for (os = abfd->sections; os ; os = os->next)
3571 {
3572 bfd_vma lo, hi;
3573
3574 if ((os->flags & SEC_ALLOC) == 0)
3575 continue;
3576
3577 lo = os->vma;
3578 /* When this function is called from elfNN_ia64_final_link
3579 the correct value to use is os->size. When called from
3580 elfNN_ia64_relax_section we are in the middle of section
3581 sizing; some sections will already have os->size set, others
3582 will have os->size zero and os->rawsize the previous size. */
3583 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3584 if (hi < lo)
3585 hi = (bfd_vma) -1;
3586
3587 if (min_vma > lo)
3588 min_vma = lo;
3589 if (max_vma < hi)
3590 max_vma = hi;
3591 if (os->flags & SEC_SMALL_DATA)
3592 {
3593 if (min_short_vma > lo)
3594 min_short_vma = lo;
3595 if (max_short_vma < hi)
3596 max_short_vma = hi;
3597 }
3598 }
3599
3600 if (ia64_info->min_short_sec)
3601 {
3602 if (min_short_vma
3603 > (ia64_info->min_short_sec->vma
3604 + ia64_info->min_short_offset))
3605 min_short_vma = (ia64_info->min_short_sec->vma
3606 + ia64_info->min_short_offset);
3607 if (max_short_vma
3608 < (ia64_info->max_short_sec->vma
3609 + ia64_info->max_short_offset))
3610 max_short_vma = (ia64_info->max_short_sec->vma
3611 + ia64_info->max_short_offset);
3612 }
3613
3614 /* See if the user wants to force a value. */
3615 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3616 FALSE, FALSE);
3617
3618 if (gp
3619 && (gp->root.type == bfd_link_hash_defined
3620 || gp->root.type == bfd_link_hash_defweak))
3621 {
3622 asection *gp_sec = gp->root.u.def.section;
3623 gp_val = (gp->root.u.def.value
3624 + gp_sec->output_section->vma
3625 + gp_sec->output_offset);
3626 }
3627 else
3628 {
3629 /* Pick a sensible value. */
3630
3631 if (ia64_info->min_short_sec)
3632 {
3633 bfd_vma short_range = max_short_vma - min_short_vma;
3634
3635 /* If min_short_sec is set, pick one in the middle bewteen
3636 min_short_vma and max_short_vma. */
3637 if (short_range >= 0x400000)
3638 goto overflow;
3639 gp_val = min_short_vma + short_range / 2;
3640 }
3641 else
3642 {
3643 asection *got_sec = ia64_info->root.sgot;
3644
3645 /* Start with just the address of the .got. */
3646 if (got_sec)
3647 gp_val = got_sec->output_section->vma;
3648 else if (max_short_vma != 0)
3649 gp_val = min_short_vma;
3650 else if (max_vma - min_vma < 0x200000)
3651 gp_val = min_vma;
3652 else
3653 gp_val = max_vma - 0x200000 + 8;
3654 }
3655
3656 /* If it is possible to address the entire image, but we
3657 don't with the choice above, adjust. */
3658 if (max_vma - min_vma < 0x400000
3659 && (max_vma - gp_val >= 0x200000
3660 || gp_val - min_vma > 0x200000))
3661 gp_val = min_vma + 0x200000;
3662 else if (max_short_vma != 0)
3663 {
3664 /* If we don't cover all the short data, adjust. */
3665 if (max_short_vma - gp_val >= 0x200000)
3666 gp_val = min_short_vma + 0x200000;
3667
3668 /* If we're addressing stuff past the end, adjust back. */
3669 if (gp_val > max_vma)
3670 gp_val = max_vma - 0x200000 + 8;
3671 }
3672 }
3673
3674 /* Validate whether all SHF_IA_64_SHORT sections are within
3675 range of the chosen GP. */
3676
3677 if (max_short_vma != 0)
3678 {
3679 if (max_short_vma - min_short_vma >= 0x400000)
3680 {
3681 overflow:
3682 (*_bfd_error_handler)
3683 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3684 bfd_get_filename (abfd),
3685 (unsigned long) (max_short_vma - min_short_vma));
3686 return FALSE;
3687 }
3688 else if ((gp_val > min_short_vma
3689 && gp_val - min_short_vma > 0x200000)
3690 || (gp_val < max_short_vma
3691 && max_short_vma - gp_val >= 0x200000))
3692 {
3693 (*_bfd_error_handler)
3694 (_("%s: __gp does not cover short data segment"),
3695 bfd_get_filename (abfd));
3696 return FALSE;
3697 }
3698 }
3699
3700 _bfd_set_gp_value (abfd, gp_val);
3701
3702 return TRUE;
3703 }
3704
3705 static bfd_boolean
3706 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3707 {
3708 struct elfNN_ia64_link_hash_table *ia64_info;
3709 asection *unwind_output_sec;
3710
3711 ia64_info = elfNN_ia64_hash_table (info);
3712 if (ia64_info == NULL)
3713 return FALSE;
3714
3715 /* Make sure we've got ourselves a nice fat __gp value. */
3716 if (!info->relocatable)
3717 {
3718 bfd_vma gp_val;
3719 struct elf_link_hash_entry *gp;
3720
3721 /* We assume after gp is set, section size will only decrease. We
3722 need to adjust gp for it. */
3723 _bfd_set_gp_value (abfd, 0);
3724 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3725 return FALSE;
3726 gp_val = _bfd_get_gp_value (abfd);
3727
3728 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3729 FALSE, FALSE);
3730 if (gp)
3731 {
3732 gp->root.type = bfd_link_hash_defined;
3733 gp->root.u.def.value = gp_val;
3734 gp->root.u.def.section = bfd_abs_section_ptr;
3735 }
3736 }
3737
3738 /* If we're producing a final executable, we need to sort the contents
3739 of the .IA_64.unwind section. Force this section to be relocated
3740 into memory rather than written immediately to the output file. */
3741 unwind_output_sec = NULL;
3742 if (!info->relocatable)
3743 {
3744 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3745 if (s)
3746 {
3747 unwind_output_sec = s->output_section;
3748 unwind_output_sec->contents
3749 = bfd_malloc (unwind_output_sec->size);
3750 if (unwind_output_sec->contents == NULL)
3751 return FALSE;
3752 }
3753 }
3754
3755 /* Invoke the regular ELF backend linker to do all the work. */
3756 if (!bfd_elf_final_link (abfd, info))
3757 return FALSE;
3758
3759 if (unwind_output_sec)
3760 {
3761 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3762 qsort (unwind_output_sec->contents,
3763 (size_t) (unwind_output_sec->size / 24),
3764 24,
3765 elfNN_ia64_unwind_entry_compare);
3766
3767 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3768 unwind_output_sec->contents, (bfd_vma) 0,
3769 unwind_output_sec->size))
3770 return FALSE;
3771 }
3772
3773 return TRUE;
3774 }
3775
3776 static bfd_boolean
3777 elfNN_ia64_relocate_section (bfd *output_bfd,
3778 struct bfd_link_info *info,
3779 bfd *input_bfd,
3780 asection *input_section,
3781 bfd_byte *contents,
3782 Elf_Internal_Rela *relocs,
3783 Elf_Internal_Sym *local_syms,
3784 asection **local_sections)
3785 {
3786 struct elfNN_ia64_link_hash_table *ia64_info;
3787 Elf_Internal_Shdr *symtab_hdr;
3788 Elf_Internal_Rela *rel;
3789 Elf_Internal_Rela *relend;
3790 asection *srel;
3791 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3792 bfd_vma gp_val;
3793
3794 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3795 ia64_info = elfNN_ia64_hash_table (info);
3796 if (ia64_info == NULL)
3797 return FALSE;
3798
3799 /* Infect various flags from the input section to the output section. */
3800 if (info->relocatable)
3801 {
3802 bfd_vma flags;
3803
3804 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3805 flags &= SHF_IA_64_NORECOV;
3806
3807 elf_section_data(input_section->output_section)
3808 ->this_hdr.sh_flags |= flags;
3809 }
3810
3811 gp_val = _bfd_get_gp_value (output_bfd);
3812 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3813
3814 rel = relocs;
3815 relend = relocs + input_section->reloc_count;
3816 for (; rel < relend; ++rel)
3817 {
3818 struct elf_link_hash_entry *h;
3819 struct elfNN_ia64_dyn_sym_info *dyn_i;
3820 bfd_reloc_status_type r;
3821 reloc_howto_type *howto;
3822 unsigned long r_symndx;
3823 Elf_Internal_Sym *sym;
3824 unsigned int r_type;
3825 bfd_vma value;
3826 asection *sym_sec;
3827 bfd_byte *hit_addr;
3828 bfd_boolean dynamic_symbol_p;
3829 bfd_boolean undef_weak_ref;
3830
3831 r_type = ELFNN_R_TYPE (rel->r_info);
3832 if (r_type > R_IA64_MAX_RELOC_CODE)
3833 {
3834 (*_bfd_error_handler)
3835 (_("%B: unknown relocation type %d"),
3836 input_bfd, (int) r_type);
3837 bfd_set_error (bfd_error_bad_value);
3838 ret_val = FALSE;
3839 continue;
3840 }
3841
3842 howto = ia64_elf_lookup_howto (r_type);
3843 r_symndx = ELFNN_R_SYM (rel->r_info);
3844 h = NULL;
3845 sym = NULL;
3846 sym_sec = NULL;
3847 undef_weak_ref = FALSE;
3848
3849 if (r_symndx < symtab_hdr->sh_info)
3850 {
3851 /* Reloc against local symbol. */
3852 asection *msec;
3853 sym = local_syms + r_symndx;
3854 sym_sec = local_sections[r_symndx];
3855 msec = sym_sec;
3856 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3857 if (!info->relocatable
3858 && (sym_sec->flags & SEC_MERGE) != 0
3859 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3860 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3861 {
3862 struct elfNN_ia64_local_hash_entry *loc_h;
3863
3864 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3865 if (loc_h && ! loc_h->sec_merge_done)
3866 {
3867 struct elfNN_ia64_dyn_sym_info *dynent;
3868 unsigned int count;
3869
3870 for (count = loc_h->count, dynent = loc_h->info;
3871 count != 0;
3872 count--, dynent++)
3873 {
3874 msec = sym_sec;
3875 dynent->addend =
3876 _bfd_merged_section_offset (output_bfd, &msec,
3877 elf_section_data (msec)->
3878 sec_info,
3879 sym->st_value
3880 + dynent->addend);
3881 dynent->addend -= sym->st_value;
3882 dynent->addend += msec->output_section->vma
3883 + msec->output_offset
3884 - sym_sec->output_section->vma
3885 - sym_sec->output_offset;
3886 }
3887
3888 /* We may have introduced duplicated entries. We need
3889 to remove them properly. */
3890 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3891 if (count != loc_h->count)
3892 {
3893 loc_h->count = count;
3894 loc_h->sorted_count = count;
3895 }
3896
3897 loc_h->sec_merge_done = 1;
3898 }
3899 }
3900 }
3901 else
3902 {
3903 bfd_boolean unresolved_reloc;
3904 bfd_boolean warned;
3905 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3906
3907 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3908 r_symndx, symtab_hdr, sym_hashes,
3909 h, sym_sec, value,
3910 unresolved_reloc, warned);
3911
3912 if (h->root.type == bfd_link_hash_undefweak)
3913 undef_weak_ref = TRUE;
3914 else if (warned)
3915 continue;
3916 }
3917
3918 if (sym_sec != NULL && discarded_section (sym_sec))
3919 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3920 rel, 1, relend, howto, 0, contents);
3921
3922 if (info->relocatable)
3923 continue;
3924
3925 hit_addr = contents + rel->r_offset;
3926 value += rel->r_addend;
3927 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3928
3929 switch (r_type)
3930 {
3931 case R_IA64_NONE:
3932 case R_IA64_LDXMOV:
3933 continue;
3934
3935 case R_IA64_IMM14:
3936 case R_IA64_IMM22:
3937 case R_IA64_IMM64:
3938 case R_IA64_DIR32MSB:
3939 case R_IA64_DIR32LSB:
3940 case R_IA64_DIR64MSB:
3941 case R_IA64_DIR64LSB:
3942 /* Install a dynamic relocation for this reloc. */
3943 if ((dynamic_symbol_p || info->shared)
3944 && r_symndx != STN_UNDEF
3945 && (input_section->flags & SEC_ALLOC) != 0)
3946 {
3947 unsigned int dyn_r_type;
3948 long dynindx;
3949 bfd_vma addend;
3950
3951 BFD_ASSERT (srel != NULL);
3952
3953 switch (r_type)
3954 {
3955 case R_IA64_IMM14:
3956 case R_IA64_IMM22:
3957 case R_IA64_IMM64:
3958 /* ??? People shouldn't be doing non-pic code in
3959 shared libraries nor dynamic executables. */
3960 (*_bfd_error_handler)
3961 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3962 input_bfd,
3963 h ? h->root.root.string
3964 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3965 sym_sec));
3966 ret_val = FALSE;
3967 continue;
3968
3969 default:
3970 break;
3971 }
3972
3973 /* If we don't need dynamic symbol lookup, find a
3974 matching RELATIVE relocation. */
3975 dyn_r_type = r_type;
3976 if (dynamic_symbol_p)
3977 {
3978 dynindx = h->dynindx;
3979 addend = rel->r_addend;
3980 value = 0;
3981 }
3982 else
3983 {
3984 switch (r_type)
3985 {
3986 case R_IA64_DIR32MSB:
3987 dyn_r_type = R_IA64_REL32MSB;
3988 break;
3989 case R_IA64_DIR32LSB:
3990 dyn_r_type = R_IA64_REL32LSB;
3991 break;
3992 case R_IA64_DIR64MSB:
3993 dyn_r_type = R_IA64_REL64MSB;
3994 break;
3995 case R_IA64_DIR64LSB:
3996 dyn_r_type = R_IA64_REL64LSB;
3997 break;
3998
3999 default:
4000 break;
4001 }
4002 dynindx = 0;
4003 addend = value;
4004 }
4005
4006 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4007 srel, rel->r_offset, dyn_r_type,
4008 dynindx, addend);
4009 }
4010 /* Fall through. */
4011
4012 case R_IA64_LTV32MSB:
4013 case R_IA64_LTV32LSB:
4014 case R_IA64_LTV64MSB:
4015 case R_IA64_LTV64LSB:
4016 r = ia64_elf_install_value (hit_addr, value, r_type);
4017 break;
4018
4019 case R_IA64_GPREL22:
4020 case R_IA64_GPREL64I:
4021 case R_IA64_GPREL32MSB:
4022 case R_IA64_GPREL32LSB:
4023 case R_IA64_GPREL64MSB:
4024 case R_IA64_GPREL64LSB:
4025 if (dynamic_symbol_p)
4026 {
4027 (*_bfd_error_handler)
4028 (_("%B: @gprel relocation against dynamic symbol %s"),
4029 input_bfd,
4030 h ? h->root.root.string
4031 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4032 sym_sec));
4033 ret_val = FALSE;
4034 continue;
4035 }
4036 value -= gp_val;
4037 r = ia64_elf_install_value (hit_addr, value, r_type);
4038 break;
4039
4040 case R_IA64_LTOFF22:
4041 case R_IA64_LTOFF22X:
4042 case R_IA64_LTOFF64I:
4043 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4044 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4045 rel->r_addend, value, R_IA64_DIRNNLSB);
4046 value -= gp_val;
4047 r = ia64_elf_install_value (hit_addr, value, r_type);
4048 break;
4049
4050 case R_IA64_PLTOFF22:
4051 case R_IA64_PLTOFF64I:
4052 case R_IA64_PLTOFF64MSB:
4053 case R_IA64_PLTOFF64LSB:
4054 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4055 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4056 value -= gp_val;
4057 r = ia64_elf_install_value (hit_addr, value, r_type);
4058 break;
4059
4060 case R_IA64_FPTR64I:
4061 case R_IA64_FPTR32MSB:
4062 case R_IA64_FPTR32LSB:
4063 case R_IA64_FPTR64MSB:
4064 case R_IA64_FPTR64LSB:
4065 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4066 if (dyn_i->want_fptr)
4067 {
4068 if (!undef_weak_ref)
4069 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4070 }
4071 if (!dyn_i->want_fptr || info->pie)
4072 {
4073 long dynindx;
4074 unsigned int dyn_r_type = r_type;
4075 bfd_vma addend = rel->r_addend;
4076
4077 /* Otherwise, we expect the dynamic linker to create
4078 the entry. */
4079
4080 if (dyn_i->want_fptr)
4081 {
4082 if (r_type == R_IA64_FPTR64I)
4083 {
4084 /* We can't represent this without a dynamic symbol.
4085 Adjust the relocation to be against an output
4086 section symbol, which are always present in the
4087 dynamic symbol table. */
4088 /* ??? People shouldn't be doing non-pic code in
4089 shared libraries. Hork. */
4090 (*_bfd_error_handler)
4091 (_("%B: linking non-pic code in a position independent executable"),
4092 input_bfd);
4093 ret_val = FALSE;
4094 continue;
4095 }
4096 dynindx = 0;
4097 addend = value;
4098 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4099 }
4100 else if (h)
4101 {
4102 if (h->dynindx != -1)
4103 dynindx = h->dynindx;
4104 else
4105 dynindx = (_bfd_elf_link_lookup_local_dynindx
4106 (info, h->root.u.def.section->owner,
4107 global_sym_index (h)));
4108 value = 0;
4109 }
4110 else
4111 {
4112 dynindx = (_bfd_elf_link_lookup_local_dynindx
4113 (info, input_bfd, (long) r_symndx));
4114 value = 0;
4115 }
4116
4117 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4118 srel, rel->r_offset, dyn_r_type,
4119 dynindx, addend);
4120 }
4121
4122 r = ia64_elf_install_value (hit_addr, value, r_type);
4123 break;
4124
4125 case R_IA64_LTOFF_FPTR22:
4126 case R_IA64_LTOFF_FPTR64I:
4127 case R_IA64_LTOFF_FPTR32MSB:
4128 case R_IA64_LTOFF_FPTR32LSB:
4129 case R_IA64_LTOFF_FPTR64MSB:
4130 case R_IA64_LTOFF_FPTR64LSB:
4131 {
4132 long dynindx;
4133
4134 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4135 if (dyn_i->want_fptr)
4136 {
4137 BFD_ASSERT (h == NULL || h->dynindx == -1);
4138 if (!undef_weak_ref)
4139 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4140 dynindx = -1;
4141 }
4142 else
4143 {
4144 /* Otherwise, we expect the dynamic linker to create
4145 the entry. */
4146 if (h)
4147 {
4148 if (h->dynindx != -1)
4149 dynindx = h->dynindx;
4150 else
4151 dynindx = (_bfd_elf_link_lookup_local_dynindx
4152 (info, h->root.u.def.section->owner,
4153 global_sym_index (h)));
4154 }
4155 else
4156 dynindx = (_bfd_elf_link_lookup_local_dynindx
4157 (info, input_bfd, (long) r_symndx));
4158 value = 0;
4159 }
4160
4161 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4162 rel->r_addend, value, R_IA64_FPTRNNLSB);
4163 value -= gp_val;
4164 r = ia64_elf_install_value (hit_addr, value, r_type);
4165 }
4166 break;
4167
4168 case R_IA64_PCREL32MSB:
4169 case R_IA64_PCREL32LSB:
4170 case R_IA64_PCREL64MSB:
4171 case R_IA64_PCREL64LSB:
4172 /* Install a dynamic relocation for this reloc. */
4173 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4174 {
4175 BFD_ASSERT (srel != NULL);
4176
4177 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4178 srel, rel->r_offset, r_type,
4179 h->dynindx, rel->r_addend);
4180 }
4181 goto finish_pcrel;
4182
4183 case R_IA64_PCREL21B:
4184 case R_IA64_PCREL60B:
4185 /* We should have created a PLT entry for any dynamic symbol. */
4186 dyn_i = NULL;
4187 if (h)
4188 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4189
4190 if (dyn_i && dyn_i->want_plt2)
4191 {
4192 /* Should have caught this earlier. */
4193 BFD_ASSERT (rel->r_addend == 0);
4194
4195 value = (ia64_info->root.splt->output_section->vma
4196 + ia64_info->root.splt->output_offset
4197 + dyn_i->plt2_offset);
4198 }
4199 else
4200 {
4201 /* Since there's no PLT entry, Validate that this is
4202 locally defined. */
4203 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4204
4205 /* If the symbol is undef_weak, we shouldn't be trying
4206 to call it. There's every chance that we'd wind up
4207 with an out-of-range fixup here. Don't bother setting
4208 any value at all. */
4209 if (undef_weak_ref)
4210 continue;
4211 }
4212 goto finish_pcrel;
4213
4214 case R_IA64_PCREL21BI:
4215 case R_IA64_PCREL21F:
4216 case R_IA64_PCREL21M:
4217 case R_IA64_PCREL22:
4218 case R_IA64_PCREL64I:
4219 /* The PCREL21BI reloc is specifically not intended for use with
4220 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4221 fixup code, and thus probably ought not be dynamic. The
4222 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4223 if (dynamic_symbol_p)
4224 {
4225 const char *msg;
4226
4227 if (r_type == R_IA64_PCREL21BI)
4228 msg = _("%B: @internal branch to dynamic symbol %s");
4229 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4230 msg = _("%B: speculation fixup to dynamic symbol %s");
4231 else
4232 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4233 (*_bfd_error_handler) (msg, input_bfd,
4234 h ? h->root.root.string
4235 : bfd_elf_sym_name (input_bfd,
4236 symtab_hdr,
4237 sym,
4238 sym_sec));
4239 ret_val = FALSE;
4240 continue;
4241 }
4242 goto finish_pcrel;
4243
4244 finish_pcrel:
4245 /* Make pc-relative. */
4246 value -= (input_section->output_section->vma
4247 + input_section->output_offset
4248 + rel->r_offset) & ~ (bfd_vma) 0x3;
4249 r = ia64_elf_install_value (hit_addr, value, r_type);
4250 break;
4251
4252 case R_IA64_SEGREL32MSB:
4253 case R_IA64_SEGREL32LSB:
4254 case R_IA64_SEGREL64MSB:
4255 case R_IA64_SEGREL64LSB:
4256 {
4257 /* Find the segment that contains the output_section. */
4258 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4259 (output_bfd, input_section->output_section);
4260
4261 if (p == NULL)
4262 {
4263 r = bfd_reloc_notsupported;
4264 }
4265 else
4266 {
4267 /* The VMA of the segment is the vaddr of the associated
4268 program header. */
4269 if (value > p->p_vaddr)
4270 value -= p->p_vaddr;
4271 else
4272 value = 0;
4273 r = ia64_elf_install_value (hit_addr, value, r_type);
4274 }
4275 break;
4276 }
4277
4278 case R_IA64_SECREL32MSB:
4279 case R_IA64_SECREL32LSB:
4280 case R_IA64_SECREL64MSB:
4281 case R_IA64_SECREL64LSB:
4282 /* Make output-section relative to section where the symbol
4283 is defined. PR 475 */
4284 if (sym_sec)
4285 value -= sym_sec->output_section->vma;
4286 r = ia64_elf_install_value (hit_addr, value, r_type);
4287 break;
4288
4289 case R_IA64_IPLTMSB:
4290 case R_IA64_IPLTLSB:
4291 /* Install a dynamic relocation for this reloc. */
4292 if ((dynamic_symbol_p || info->shared)
4293 && (input_section->flags & SEC_ALLOC) != 0)
4294 {
4295 BFD_ASSERT (srel != NULL);
4296
4297 /* If we don't need dynamic symbol lookup, install two
4298 RELATIVE relocations. */
4299 if (!dynamic_symbol_p)
4300 {
4301 unsigned int dyn_r_type;
4302
4303 if (r_type == R_IA64_IPLTMSB)
4304 dyn_r_type = R_IA64_REL64MSB;
4305 else
4306 dyn_r_type = R_IA64_REL64LSB;
4307
4308 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4309 input_section,
4310 srel, rel->r_offset,
4311 dyn_r_type, 0, value);
4312 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4313 input_section,
4314 srel, rel->r_offset + 8,
4315 dyn_r_type, 0, gp_val);
4316 }
4317 else
4318 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4319 srel, rel->r_offset, r_type,
4320 h->dynindx, rel->r_addend);
4321 }
4322
4323 if (r_type == R_IA64_IPLTMSB)
4324 r_type = R_IA64_DIR64MSB;
4325 else
4326 r_type = R_IA64_DIR64LSB;
4327 ia64_elf_install_value (hit_addr, value, r_type);
4328 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4329 break;
4330
4331 case R_IA64_TPREL14:
4332 case R_IA64_TPREL22:
4333 case R_IA64_TPREL64I:
4334 if (elf_hash_table (info)->tls_sec == NULL)
4335 goto missing_tls_sec;
4336 value -= elfNN_ia64_tprel_base (info);
4337 r = ia64_elf_install_value (hit_addr, value, r_type);
4338 break;
4339
4340 case R_IA64_DTPREL14:
4341 case R_IA64_DTPREL22:
4342 case R_IA64_DTPREL64I:
4343 case R_IA64_DTPREL32LSB:
4344 case R_IA64_DTPREL32MSB:
4345 case R_IA64_DTPREL64LSB:
4346 case R_IA64_DTPREL64MSB:
4347 if (elf_hash_table (info)->tls_sec == NULL)
4348 goto missing_tls_sec;
4349 value -= elfNN_ia64_dtprel_base (info);
4350 r = ia64_elf_install_value (hit_addr, value, r_type);
4351 break;
4352
4353 case R_IA64_LTOFF_TPREL22:
4354 case R_IA64_LTOFF_DTPMOD22:
4355 case R_IA64_LTOFF_DTPREL22:
4356 {
4357 int got_r_type;
4358 long dynindx = h ? h->dynindx : -1;
4359 bfd_vma r_addend = rel->r_addend;
4360
4361 switch (r_type)
4362 {
4363 default:
4364 case R_IA64_LTOFF_TPREL22:
4365 if (!dynamic_symbol_p)
4366 {
4367 if (elf_hash_table (info)->tls_sec == NULL)
4368 goto missing_tls_sec;
4369 if (!info->shared)
4370 value -= elfNN_ia64_tprel_base (info);
4371 else
4372 {
4373 r_addend += value - elfNN_ia64_dtprel_base (info);
4374 dynindx = 0;
4375 }
4376 }
4377 got_r_type = R_IA64_TPREL64LSB;
4378 break;
4379 case R_IA64_LTOFF_DTPMOD22:
4380 if (!dynamic_symbol_p && !info->shared)
4381 value = 1;
4382 got_r_type = R_IA64_DTPMOD64LSB;
4383 break;
4384 case R_IA64_LTOFF_DTPREL22:
4385 if (!dynamic_symbol_p)
4386 {
4387 if (elf_hash_table (info)->tls_sec == NULL)
4388 goto missing_tls_sec;
4389 value -= elfNN_ia64_dtprel_base (info);
4390 }
4391 got_r_type = R_IA64_DTPRELNNLSB;
4392 break;
4393 }
4394 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4395 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4396 value, got_r_type);
4397 value -= gp_val;
4398 r = ia64_elf_install_value (hit_addr, value, r_type);
4399 }
4400 break;
4401
4402 default:
4403 r = bfd_reloc_notsupported;
4404 break;
4405 }
4406
4407 switch (r)
4408 {
4409 case bfd_reloc_ok:
4410 break;
4411
4412 case bfd_reloc_undefined:
4413 /* This can happen for global table relative relocs if
4414 __gp is undefined. This is a panic situation so we
4415 don't try to continue. */
4416 (*info->callbacks->undefined_symbol)
4417 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4418 return FALSE;
4419
4420 case bfd_reloc_notsupported:
4421 {
4422 const char *name;
4423
4424 if (h)
4425 name = h->root.root.string;
4426 else
4427 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4428 sym_sec);
4429 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4430 name, input_bfd,
4431 input_section, rel->r_offset))
4432 return FALSE;
4433 ret_val = FALSE;
4434 }
4435 break;
4436
4437 case bfd_reloc_dangerous:
4438 case bfd_reloc_outofrange:
4439 case bfd_reloc_overflow:
4440 default:
4441 missing_tls_sec:
4442 {
4443 const char *name;
4444
4445 if (h)
4446 name = h->root.root.string;
4447 else
4448 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4449 sym_sec);
4450
4451 switch (r_type)
4452 {
4453 case R_IA64_TPREL14:
4454 case R_IA64_TPREL22:
4455 case R_IA64_TPREL64I:
4456 case R_IA64_DTPREL14:
4457 case R_IA64_DTPREL22:
4458 case R_IA64_DTPREL64I:
4459 case R_IA64_DTPREL32LSB:
4460 case R_IA64_DTPREL32MSB:
4461 case R_IA64_DTPREL64LSB:
4462 case R_IA64_DTPREL64MSB:
4463 case R_IA64_LTOFF_TPREL22:
4464 case R_IA64_LTOFF_DTPMOD22:
4465 case R_IA64_LTOFF_DTPREL22:
4466 (*_bfd_error_handler)
4467 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4468 input_bfd, input_section, howto->name, name,
4469 rel->r_offset);
4470 break;
4471
4472 case R_IA64_PCREL21B:
4473 case R_IA64_PCREL21BI:
4474 case R_IA64_PCREL21M:
4475 case R_IA64_PCREL21F:
4476 if (is_elf_hash_table (info->hash))
4477 {
4478 /* Relaxtion is always performed for ELF output.
4479 Overflow failures for those relocations mean
4480 that the section is too big to relax. */
4481 (*_bfd_error_handler)
4482 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4483 input_bfd, input_section, howto->name, name,
4484 rel->r_offset, input_section->size);
4485 break;
4486 }
4487 default:
4488 if (!(*info->callbacks->reloc_overflow) (info,
4489 &h->root,
4490 name,
4491 howto->name,
4492 (bfd_vma) 0,
4493 input_bfd,
4494 input_section,
4495 rel->r_offset))
4496 return FALSE;
4497 break;
4498 }
4499
4500 ret_val = FALSE;
4501 }
4502 break;
4503 }
4504 }
4505
4506 return ret_val;
4507 }
4508
4509 static bfd_boolean
4510 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4511 struct bfd_link_info *info,
4512 struct elf_link_hash_entry *h,
4513 Elf_Internal_Sym *sym)
4514 {
4515 struct elfNN_ia64_link_hash_table *ia64_info;
4516 struct elfNN_ia64_dyn_sym_info *dyn_i;
4517
4518 ia64_info = elfNN_ia64_hash_table (info);
4519 if (ia64_info == NULL)
4520 return FALSE;
4521
4522 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4523
4524 /* Fill in the PLT data, if required. */
4525 if (dyn_i && dyn_i->want_plt)
4526 {
4527 Elf_Internal_Rela outrel;
4528 bfd_byte *loc;
4529 asection *plt_sec;
4530 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4531
4532 gp_val = _bfd_get_gp_value (output_bfd);
4533
4534 /* Initialize the minimal PLT entry. */
4535
4536 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4537 plt_sec = ia64_info->root.splt;
4538 loc = plt_sec->contents + dyn_i->plt_offset;
4539
4540 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4541 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4542 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4543
4544 plt_addr = (plt_sec->output_section->vma
4545 + plt_sec->output_offset
4546 + dyn_i->plt_offset);
4547 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4548
4549 /* Initialize the FULL PLT entry, if needed. */
4550 if (dyn_i->want_plt2)
4551 {
4552 loc = plt_sec->contents + dyn_i->plt2_offset;
4553
4554 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4555 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4556
4557 /* Mark the symbol as undefined, rather than as defined in the
4558 plt section. Leave the value alone. */
4559 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4560 first place. But perhaps elflink.c did some for us. */
4561 if (!h->def_regular)
4562 sym->st_shndx = SHN_UNDEF;
4563 }
4564
4565 /* Create the dynamic relocation. */
4566 outrel.r_offset = pltoff_addr;
4567 if (bfd_little_endian (output_bfd))
4568 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4569 else
4570 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4571 outrel.r_addend = 0;
4572
4573 /* This is fun. In the .IA_64.pltoff section, we've got entries
4574 that correspond both to real PLT entries, and those that
4575 happened to resolve to local symbols but need to be created
4576 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4577 relocations for the real PLT should come at the end of the
4578 section, so that they can be indexed by plt entry at runtime.
4579
4580 We emitted all of the relocations for the non-PLT @pltoff
4581 entries during relocate_section. So we can consider the
4582 existing sec->reloc_count to be the base of the array of
4583 PLT relocations. */
4584
4585 loc = ia64_info->rel_pltoff_sec->contents;
4586 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4587 * sizeof (ElfNN_External_Rela));
4588 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4589 }
4590
4591 /* Mark some specially defined symbols as absolute. */
4592 if (h == ia64_info->root.hdynamic
4593 || h == ia64_info->root.hgot
4594 || h == ia64_info->root.hplt)
4595 sym->st_shndx = SHN_ABS;
4596
4597 return TRUE;
4598 }
4599
4600 static bfd_boolean
4601 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4602 struct bfd_link_info *info)
4603 {
4604 struct elfNN_ia64_link_hash_table *ia64_info;
4605 bfd *dynobj;
4606
4607 ia64_info = elfNN_ia64_hash_table (info);
4608 if (ia64_info == NULL)
4609 return FALSE;
4610
4611 dynobj = ia64_info->root.dynobj;
4612
4613 if (elf_hash_table (info)->dynamic_sections_created)
4614 {
4615 ElfNN_External_Dyn *dyncon, *dynconend;
4616 asection *sdyn, *sgotplt;
4617 bfd_vma gp_val;
4618
4619 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4620 sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
4621 BFD_ASSERT (sdyn != NULL);
4622 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4623 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4624
4625 gp_val = _bfd_get_gp_value (abfd);
4626
4627 for (; dyncon < dynconend; dyncon++)
4628 {
4629 Elf_Internal_Dyn dyn;
4630
4631 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4632
4633 switch (dyn.d_tag)
4634 {
4635 case DT_PLTGOT:
4636 dyn.d_un.d_ptr = gp_val;
4637 break;
4638
4639 case DT_PLTRELSZ:
4640 dyn.d_un.d_val = (ia64_info->minplt_entries
4641 * sizeof (ElfNN_External_Rela));
4642 break;
4643
4644 case DT_JMPREL:
4645 /* See the comment above in finish_dynamic_symbol. */
4646 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4647 + ia64_info->rel_pltoff_sec->output_offset
4648 + (ia64_info->rel_pltoff_sec->reloc_count
4649 * sizeof (ElfNN_External_Rela)));
4650 break;
4651
4652 case DT_IA_64_PLT_RESERVE:
4653 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4654 + sgotplt->output_offset);
4655 break;
4656
4657 case DT_RELASZ:
4658 /* Do not have RELASZ include JMPREL. This makes things
4659 easier on ld.so. This is not what the rest of BFD set up. */
4660 dyn.d_un.d_val -= (ia64_info->minplt_entries
4661 * sizeof (ElfNN_External_Rela));
4662 break;
4663 }
4664
4665 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4666 }
4667
4668 /* Initialize the PLT0 entry. */
4669 if (ia64_info->root.splt)
4670 {
4671 bfd_byte *loc = ia64_info->root.splt->contents;
4672 bfd_vma pltres;
4673
4674 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4675
4676 pltres = (sgotplt->output_section->vma
4677 + sgotplt->output_offset
4678 - gp_val);
4679
4680 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4681 }
4682 }
4683
4684 return TRUE;
4685 }
4686 \f
4687 /* ELF file flag handling: */
4688
4689 /* Function to keep IA-64 specific file flags. */
4690 static bfd_boolean
4691 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4692 {
4693 BFD_ASSERT (!elf_flags_init (abfd)
4694 || elf_elfheader (abfd)->e_flags == flags);
4695
4696 elf_elfheader (abfd)->e_flags = flags;
4697 elf_flags_init (abfd) = TRUE;
4698 return TRUE;
4699 }
4700
4701 /* Merge backend specific data from an object file to the output
4702 object file when linking. */
4703 static bfd_boolean
4704 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4705 {
4706 flagword out_flags;
4707 flagword in_flags;
4708 bfd_boolean ok = TRUE;
4709
4710 /* Don't even pretend to support mixed-format linking. */
4711 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4712 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4713 return FALSE;
4714
4715 in_flags = elf_elfheader (ibfd)->e_flags;
4716 out_flags = elf_elfheader (obfd)->e_flags;
4717
4718 if (! elf_flags_init (obfd))
4719 {
4720 elf_flags_init (obfd) = TRUE;
4721 elf_elfheader (obfd)->e_flags = in_flags;
4722
4723 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4724 && bfd_get_arch_info (obfd)->the_default)
4725 {
4726 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4727 bfd_get_mach (ibfd));
4728 }
4729
4730 return TRUE;
4731 }
4732
4733 /* Check flag compatibility. */
4734 if (in_flags == out_flags)
4735 return TRUE;
4736
4737 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4738 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4739 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4740
4741 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4742 {
4743 (*_bfd_error_handler)
4744 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4745 ibfd);
4746
4747 bfd_set_error (bfd_error_bad_value);
4748 ok = FALSE;
4749 }
4750 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4751 {
4752 (*_bfd_error_handler)
4753 (_("%B: linking big-endian files with little-endian files"),
4754 ibfd);
4755
4756 bfd_set_error (bfd_error_bad_value);
4757 ok = FALSE;
4758 }
4759 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4760 {
4761 (*_bfd_error_handler)
4762 (_("%B: linking 64-bit files with 32-bit files"),
4763 ibfd);
4764
4765 bfd_set_error (bfd_error_bad_value);
4766 ok = FALSE;
4767 }
4768 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4769 {
4770 (*_bfd_error_handler)
4771 (_("%B: linking constant-gp files with non-constant-gp files"),
4772 ibfd);
4773
4774 bfd_set_error (bfd_error_bad_value);
4775 ok = FALSE;
4776 }
4777 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4778 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4779 {
4780 (*_bfd_error_handler)
4781 (_("%B: linking auto-pic files with non-auto-pic files"),
4782 ibfd);
4783
4784 bfd_set_error (bfd_error_bad_value);
4785 ok = FALSE;
4786 }
4787
4788 return ok;
4789 }
4790
4791 static bfd_boolean
4792 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4793 {
4794 FILE *file = (FILE *) ptr;
4795 flagword flags = elf_elfheader (abfd)->e_flags;
4796
4797 BFD_ASSERT (abfd != NULL && ptr != NULL);
4798
4799 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4800 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4801 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4802 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4803 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4804 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4805 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4806 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4807 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4808
4809 _bfd_elf_print_private_bfd_data (abfd, ptr);
4810 return TRUE;
4811 }
4812
4813 static enum elf_reloc_type_class
4814 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4815 const asection *rel_sec ATTRIBUTE_UNUSED,
4816 const Elf_Internal_Rela *rela)
4817 {
4818 switch ((int) ELFNN_R_TYPE (rela->r_info))
4819 {
4820 case R_IA64_REL32MSB:
4821 case R_IA64_REL32LSB:
4822 case R_IA64_REL64MSB:
4823 case R_IA64_REL64LSB:
4824 return reloc_class_relative;
4825 case R_IA64_IPLTMSB:
4826 case R_IA64_IPLTLSB:
4827 return reloc_class_plt;
4828 case R_IA64_COPY:
4829 return reloc_class_copy;
4830 default:
4831 return reloc_class_normal;
4832 }
4833 }
4834
4835 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4836 {
4837 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4838 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4839 { NULL, 0, 0, 0, 0 }
4840 };
4841
4842 static bfd_boolean
4843 elfNN_ia64_object_p (bfd *abfd)
4844 {
4845 asection *sec;
4846 asection *group, *unwi, *unw;
4847 flagword flags;
4848 const char *name;
4849 char *unwi_name, *unw_name;
4850 bfd_size_type amt;
4851
4852 if (abfd->flags & DYNAMIC)
4853 return TRUE;
4854
4855 /* Flags for fake group section. */
4856 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4857 | SEC_EXCLUDE);
4858
4859 /* We add a fake section group for each .gnu.linkonce.t.* section,
4860 which isn't in a section group, and its unwind sections. */
4861 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4862 {
4863 if (elf_sec_group (sec) == NULL
4864 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4865 == (SEC_LINK_ONCE | SEC_CODE))
4866 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4867 {
4868 name = sec->name + 16;
4869
4870 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4871 unwi_name = bfd_alloc (abfd, amt);
4872 if (!unwi_name)
4873 return FALSE;
4874
4875 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4876 unwi = bfd_get_section_by_name (abfd, unwi_name);
4877
4878 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4879 unw_name = bfd_alloc (abfd, amt);
4880 if (!unw_name)
4881 return FALSE;
4882
4883 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4884 unw = bfd_get_section_by_name (abfd, unw_name);
4885
4886 /* We need to create a fake group section for it and its
4887 unwind sections. */
4888 group = bfd_make_section_anyway_with_flags (abfd, name,
4889 flags);
4890 if (group == NULL)
4891 return FALSE;
4892
4893 /* Move the fake group section to the beginning. */
4894 bfd_section_list_remove (abfd, group);
4895 bfd_section_list_prepend (abfd, group);
4896
4897 elf_next_in_group (group) = sec;
4898
4899 elf_group_name (sec) = name;
4900 elf_next_in_group (sec) = sec;
4901 elf_sec_group (sec) = group;
4902
4903 if (unwi)
4904 {
4905 elf_group_name (unwi) = name;
4906 elf_next_in_group (unwi) = sec;
4907 elf_next_in_group (sec) = unwi;
4908 elf_sec_group (unwi) = group;
4909 }
4910
4911 if (unw)
4912 {
4913 elf_group_name (unw) = name;
4914 if (unwi)
4915 {
4916 elf_next_in_group (unw) = elf_next_in_group (unwi);
4917 elf_next_in_group (unwi) = unw;
4918 }
4919 else
4920 {
4921 elf_next_in_group (unw) = sec;
4922 elf_next_in_group (sec) = unw;
4923 }
4924 elf_sec_group (unw) = group;
4925 }
4926
4927 /* Fake SHT_GROUP section header. */
4928 elf_section_data (group)->this_hdr.bfd_section = group;
4929 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4930 }
4931 }
4932 return TRUE;
4933 }
4934
4935 static bfd_boolean
4936 elfNN_ia64_hpux_vec (const bfd_target *vec)
4937 {
4938 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4939 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4940 }
4941
4942 static void
4943 elfNN_hpux_post_process_headers (bfd *abfd,
4944 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4945 {
4946 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4947
4948 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4949 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4950 }
4951
4952 static bfd_boolean
4953 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4954 asection *sec, int *retval)
4955 {
4956 if (bfd_is_com_section (sec))
4957 {
4958 *retval = SHN_IA_64_ANSI_COMMON;
4959 return TRUE;
4960 }
4961 return FALSE;
4962 }
4963
4964 static void
4965 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4966 asymbol *asym)
4967 {
4968 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4969
4970 switch (elfsym->internal_elf_sym.st_shndx)
4971 {
4972 case SHN_IA_64_ANSI_COMMON:
4973 asym->section = bfd_com_section_ptr;
4974 asym->value = elfsym->internal_elf_sym.st_size;
4975 asym->flags &= ~BSF_GLOBAL;
4976 break;
4977 }
4978 }
4979 \f
4980 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4981 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4982 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4983 #define TARGET_BIG_NAME "elfNN-ia64-big"
4984 #define ELF_ARCH bfd_arch_ia64
4985 #define ELF_TARGET_ID IA64_ELF_DATA
4986 #define ELF_MACHINE_CODE EM_IA_64
4987 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4988 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4989 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4990 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4991
4992 #define elf_backend_section_from_shdr \
4993 elfNN_ia64_section_from_shdr
4994 #define elf_backend_section_flags \
4995 elfNN_ia64_section_flags
4996 #define elf_backend_fake_sections \
4997 elfNN_ia64_fake_sections
4998 #define elf_backend_final_write_processing \
4999 elfNN_ia64_final_write_processing
5000 #define elf_backend_add_symbol_hook \
5001 elfNN_ia64_add_symbol_hook
5002 #define elf_backend_additional_program_headers \
5003 elfNN_ia64_additional_program_headers
5004 #define elf_backend_modify_segment_map \
5005 elfNN_ia64_modify_segment_map
5006 #define elf_backend_modify_program_headers \
5007 elfNN_ia64_modify_program_headers
5008 #define elf_info_to_howto \
5009 elfNN_ia64_info_to_howto
5010
5011 #define bfd_elfNN_bfd_reloc_type_lookup \
5012 ia64_elf_reloc_type_lookup
5013 #define bfd_elfNN_bfd_reloc_name_lookup \
5014 ia64_elf_reloc_name_lookup
5015 #define bfd_elfNN_bfd_is_local_label_name \
5016 elfNN_ia64_is_local_label_name
5017 #define bfd_elfNN_bfd_relax_section \
5018 elfNN_ia64_relax_section
5019
5020 #define elf_backend_object_p \
5021 elfNN_ia64_object_p
5022
5023 /* Stuff for the BFD linker: */
5024 #define bfd_elfNN_bfd_link_hash_table_create \
5025 elfNN_ia64_hash_table_create
5026 #define bfd_elfNN_bfd_link_hash_table_free \
5027 elfNN_ia64_hash_table_free
5028 #define elf_backend_create_dynamic_sections \
5029 elfNN_ia64_create_dynamic_sections
5030 #define elf_backend_check_relocs \
5031 elfNN_ia64_check_relocs
5032 #define elf_backend_adjust_dynamic_symbol \
5033 elfNN_ia64_adjust_dynamic_symbol
5034 #define elf_backend_size_dynamic_sections \
5035 elfNN_ia64_size_dynamic_sections
5036 #define elf_backend_omit_section_dynsym \
5037 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5038 #define elf_backend_relocate_section \
5039 elfNN_ia64_relocate_section
5040 #define elf_backend_finish_dynamic_symbol \
5041 elfNN_ia64_finish_dynamic_symbol
5042 #define elf_backend_finish_dynamic_sections \
5043 elfNN_ia64_finish_dynamic_sections
5044 #define bfd_elfNN_bfd_final_link \
5045 elfNN_ia64_final_link
5046
5047 #define bfd_elfNN_bfd_merge_private_bfd_data \
5048 elfNN_ia64_merge_private_bfd_data
5049 #define bfd_elfNN_bfd_set_private_flags \
5050 elfNN_ia64_set_private_flags
5051 #define bfd_elfNN_bfd_print_private_bfd_data \
5052 elfNN_ia64_print_private_bfd_data
5053
5054 #define elf_backend_plt_readonly 1
5055 #define elf_backend_want_plt_sym 0
5056 #define elf_backend_plt_alignment 5
5057 #define elf_backend_got_header_size 0
5058 #define elf_backend_want_got_plt 1
5059 #define elf_backend_may_use_rel_p 1
5060 #define elf_backend_may_use_rela_p 1
5061 #define elf_backend_default_use_rela_p 1
5062 #define elf_backend_want_dynbss 0
5063 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5064 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5065 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5066 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5067 #define elf_backend_rela_normal 1
5068 #define elf_backend_special_sections elfNN_ia64_special_sections
5069 #define elf_backend_default_execstack 0
5070
5071 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5072 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5073 We don't want to flood users with so many error messages. We turn
5074 off the warning for now. It will be turned on later when the Intel
5075 compiler is fixed. */
5076 #define elf_backend_link_order_error_handler NULL
5077
5078 #include "elfNN-target.h"
5079
5080 /* HPUX-specific vectors. */
5081
5082 #undef TARGET_LITTLE_SYM
5083 #undef TARGET_LITTLE_NAME
5084 #undef TARGET_BIG_SYM
5085 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5086 #undef TARGET_BIG_NAME
5087 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5088
5089 /* These are HP-UX specific functions. */
5090
5091 #undef elf_backend_post_process_headers
5092 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5093
5094 #undef elf_backend_section_from_bfd_section
5095 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5096
5097 #undef elf_backend_symbol_processing
5098 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5099
5100 #undef elf_backend_want_p_paddr_set_to_zero
5101 #define elf_backend_want_p_paddr_set_to_zero 1
5102
5103 #undef ELF_COMMONPAGESIZE
5104 #undef ELF_OSABI
5105 #define ELF_OSABI ELFOSABI_HPUX
5106
5107 #undef elfNN_bed
5108 #define elfNN_bed elfNN_ia64_hpux_bed
5109
5110 #include "elfNN-target.h"
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