* elf-bfd.h (RELOC_AGAINST_DISCARDED_SECTION): Handle compound
[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 *, PTR),
182 PTR info);
183 static bfd_boolean allocate_global_data_got
184 (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data);
185 static bfd_boolean allocate_global_fptr_got
186 (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data);
187 static bfd_boolean allocate_local_got
188 (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR 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, PTR 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 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_tdata (abfd)->segment_map; 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_tdata (abfd)->segment_map;
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_tdata (abfd)->segment_map; 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_tdata (abfd)->segment_map;
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 = tdata->segment_map; 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 PTR 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 PTR 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_generic_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 *, PTR);
1474 PTR data;
1475 };
1476
1477 static bfd_boolean
1478 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1479 PTR 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, PTR 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 *, PTR),
1517 PTR 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_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_with_flags (dynobj, ".opd",
1990 (SEC_ALLOC
1991 | SEC_LOAD
1992 | SEC_HAS_CONTENTS
1993 | SEC_IN_MEMORY
1994 | (info->pie ? 0 : SEC_READONLY)
1995 | SEC_LINKER_CREATED));
1996 if (!fptr
1997 || !bfd_set_section_alignment (abfd, fptr, 4))
1998 {
1999 BFD_ASSERT (0);
2000 return NULL;
2001 }
2002
2003 ia64_info->fptr_sec = fptr;
2004
2005 if (info->pie)
2006 {
2007 asection *fptr_rel;
2008 fptr_rel = bfd_make_section_with_flags (dynobj, ".rela.opd",
2009 (SEC_ALLOC | SEC_LOAD
2010 | SEC_HAS_CONTENTS
2011 | SEC_IN_MEMORY
2012 | SEC_LINKER_CREATED
2013 | SEC_READONLY));
2014 if (fptr_rel == NULL
2015 || !bfd_set_section_alignment (abfd, fptr_rel,
2016 LOG_SECTION_ALIGN))
2017 {
2018 BFD_ASSERT (0);
2019 return NULL;
2020 }
2021
2022 ia64_info->rel_fptr_sec = fptr_rel;
2023 }
2024 }
2025
2026 return fptr;
2027 }
2028
2029 static asection *
2030 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2031 struct elfNN_ia64_link_hash_table *ia64_info)
2032 {
2033 asection *pltoff;
2034 bfd *dynobj;
2035
2036 pltoff = ia64_info->pltoff_sec;
2037 if (!pltoff)
2038 {
2039 dynobj = ia64_info->root.dynobj;
2040 if (!dynobj)
2041 ia64_info->root.dynobj = dynobj = abfd;
2042
2043 pltoff = bfd_make_section_with_flags (dynobj,
2044 ELF_STRING_ia64_pltoff,
2045 (SEC_ALLOC
2046 | SEC_LOAD
2047 | SEC_HAS_CONTENTS
2048 | SEC_IN_MEMORY
2049 | SEC_SMALL_DATA
2050 | SEC_LINKER_CREATED));
2051 if (!pltoff
2052 || !bfd_set_section_alignment (abfd, pltoff, 4))
2053 {
2054 BFD_ASSERT (0);
2055 return NULL;
2056 }
2057
2058 ia64_info->pltoff_sec = pltoff;
2059 }
2060
2061 return pltoff;
2062 }
2063
2064 static asection *
2065 get_reloc_section (bfd *abfd,
2066 struct elfNN_ia64_link_hash_table *ia64_info,
2067 asection *sec, bfd_boolean create)
2068 {
2069 const char *srel_name;
2070 asection *srel;
2071 bfd *dynobj;
2072
2073 srel_name = (bfd_elf_string_from_elf_section
2074 (abfd, elf_elfheader(abfd)->e_shstrndx,
2075 _bfd_elf_single_rel_hdr (sec)->sh_name));
2076 if (srel_name == NULL)
2077 return NULL;
2078
2079 dynobj = ia64_info->root.dynobj;
2080 if (!dynobj)
2081 ia64_info->root.dynobj = dynobj = abfd;
2082
2083 srel = bfd_get_section_by_name (dynobj, srel_name);
2084 if (srel == NULL && create)
2085 {
2086 srel = bfd_make_section_with_flags (dynobj, srel_name,
2087 (SEC_ALLOC | SEC_LOAD
2088 | SEC_HAS_CONTENTS
2089 | SEC_IN_MEMORY
2090 | SEC_LINKER_CREATED
2091 | SEC_READONLY));
2092 if (srel == NULL
2093 || !bfd_set_section_alignment (dynobj, srel,
2094 LOG_SECTION_ALIGN))
2095 return NULL;
2096 }
2097
2098 return srel;
2099 }
2100
2101 static bfd_boolean
2102 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2103 asection *srel, int type, bfd_boolean reltext)
2104 {
2105 struct elfNN_ia64_dyn_reloc_entry *rent;
2106
2107 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2108 if (rent->srel == srel && rent->type == type)
2109 break;
2110
2111 if (!rent)
2112 {
2113 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2114 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2115 if (!rent)
2116 return FALSE;
2117
2118 rent->next = dyn_i->reloc_entries;
2119 rent->srel = srel;
2120 rent->type = type;
2121 rent->count = 0;
2122 dyn_i->reloc_entries = rent;
2123 }
2124 rent->reltext = reltext;
2125 rent->count++;
2126
2127 return TRUE;
2128 }
2129
2130 static bfd_boolean
2131 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2132 asection *sec,
2133 const Elf_Internal_Rela *relocs)
2134 {
2135 struct elfNN_ia64_link_hash_table *ia64_info;
2136 const Elf_Internal_Rela *relend;
2137 Elf_Internal_Shdr *symtab_hdr;
2138 const Elf_Internal_Rela *rel;
2139 asection *got, *fptr, *srel, *pltoff;
2140 enum {
2141 NEED_GOT = 1,
2142 NEED_GOTX = 2,
2143 NEED_FPTR = 4,
2144 NEED_PLTOFF = 8,
2145 NEED_MIN_PLT = 16,
2146 NEED_FULL_PLT = 32,
2147 NEED_DYNREL = 64,
2148 NEED_LTOFF_FPTR = 128,
2149 NEED_TPREL = 256,
2150 NEED_DTPMOD = 512,
2151 NEED_DTPREL = 1024
2152 };
2153 int need_entry;
2154 struct elf_link_hash_entry *h;
2155 unsigned long r_symndx;
2156 bfd_boolean maybe_dynamic;
2157
2158 if (info->relocatable)
2159 return TRUE;
2160
2161 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2162 ia64_info = elfNN_ia64_hash_table (info);
2163 if (ia64_info == NULL)
2164 return FALSE;
2165
2166 got = fptr = srel = pltoff = NULL;
2167
2168 relend = relocs + sec->reloc_count;
2169
2170 /* We scan relocations first to create dynamic relocation arrays. We
2171 modified get_dyn_sym_info to allow fast insertion and support fast
2172 lookup in the next loop. */
2173 for (rel = relocs; rel < relend; ++rel)
2174 {
2175 r_symndx = ELFNN_R_SYM (rel->r_info);
2176 if (r_symndx >= symtab_hdr->sh_info)
2177 {
2178 long indx = r_symndx - symtab_hdr->sh_info;
2179 h = elf_sym_hashes (abfd)[indx];
2180 while (h->root.type == bfd_link_hash_indirect
2181 || h->root.type == bfd_link_hash_warning)
2182 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2183 }
2184 else
2185 h = NULL;
2186
2187 /* We can only get preliminary data on whether a symbol is
2188 locally or externally defined, as not all of the input files
2189 have yet been processed. Do something with what we know, as
2190 this may help reduce memory usage and processing time later. */
2191 maybe_dynamic = (h && ((!info->executable
2192 && (!SYMBOLIC_BIND (info, h)
2193 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2194 || !h->def_regular
2195 || h->root.type == bfd_link_hash_defweak));
2196
2197 need_entry = 0;
2198 switch (ELFNN_R_TYPE (rel->r_info))
2199 {
2200 case R_IA64_TPREL64MSB:
2201 case R_IA64_TPREL64LSB:
2202 if (info->shared || maybe_dynamic)
2203 need_entry = NEED_DYNREL;
2204 break;
2205
2206 case R_IA64_LTOFF_TPREL22:
2207 need_entry = NEED_TPREL;
2208 if (info->shared)
2209 info->flags |= DF_STATIC_TLS;
2210 break;
2211
2212 case R_IA64_DTPREL32MSB:
2213 case R_IA64_DTPREL32LSB:
2214 case R_IA64_DTPREL64MSB:
2215 case R_IA64_DTPREL64LSB:
2216 if (info->shared || maybe_dynamic)
2217 need_entry = NEED_DYNREL;
2218 break;
2219
2220 case R_IA64_LTOFF_DTPREL22:
2221 need_entry = NEED_DTPREL;
2222 break;
2223
2224 case R_IA64_DTPMOD64MSB:
2225 case R_IA64_DTPMOD64LSB:
2226 if (info->shared || maybe_dynamic)
2227 need_entry = NEED_DYNREL;
2228 break;
2229
2230 case R_IA64_LTOFF_DTPMOD22:
2231 need_entry = NEED_DTPMOD;
2232 break;
2233
2234 case R_IA64_LTOFF_FPTR22:
2235 case R_IA64_LTOFF_FPTR64I:
2236 case R_IA64_LTOFF_FPTR32MSB:
2237 case R_IA64_LTOFF_FPTR32LSB:
2238 case R_IA64_LTOFF_FPTR64MSB:
2239 case R_IA64_LTOFF_FPTR64LSB:
2240 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2241 break;
2242
2243 case R_IA64_FPTR64I:
2244 case R_IA64_FPTR32MSB:
2245 case R_IA64_FPTR32LSB:
2246 case R_IA64_FPTR64MSB:
2247 case R_IA64_FPTR64LSB:
2248 if (info->shared || h)
2249 need_entry = NEED_FPTR | NEED_DYNREL;
2250 else
2251 need_entry = NEED_FPTR;
2252 break;
2253
2254 case R_IA64_LTOFF22:
2255 case R_IA64_LTOFF64I:
2256 need_entry = NEED_GOT;
2257 break;
2258
2259 case R_IA64_LTOFF22X:
2260 need_entry = NEED_GOTX;
2261 break;
2262
2263 case R_IA64_PLTOFF22:
2264 case R_IA64_PLTOFF64I:
2265 case R_IA64_PLTOFF64MSB:
2266 case R_IA64_PLTOFF64LSB:
2267 need_entry = NEED_PLTOFF;
2268 if (h)
2269 {
2270 if (maybe_dynamic)
2271 need_entry |= NEED_MIN_PLT;
2272 }
2273 else
2274 {
2275 (*info->callbacks->warning)
2276 (info, _("@pltoff reloc against local symbol"), 0,
2277 abfd, 0, (bfd_vma) 0);
2278 }
2279 break;
2280
2281 case R_IA64_PCREL21B:
2282 case R_IA64_PCREL60B:
2283 /* Depending on where this symbol is defined, we may or may not
2284 need a full plt entry. Only skip if we know we'll not need
2285 the entry -- static or symbolic, and the symbol definition
2286 has already been seen. */
2287 if (maybe_dynamic && rel->r_addend == 0)
2288 need_entry = NEED_FULL_PLT;
2289 break;
2290
2291 case R_IA64_IMM14:
2292 case R_IA64_IMM22:
2293 case R_IA64_IMM64:
2294 case R_IA64_DIR32MSB:
2295 case R_IA64_DIR32LSB:
2296 case R_IA64_DIR64MSB:
2297 case R_IA64_DIR64LSB:
2298 /* Shared objects will always need at least a REL relocation. */
2299 if (info->shared || maybe_dynamic)
2300 need_entry = NEED_DYNREL;
2301 break;
2302
2303 case R_IA64_IPLTMSB:
2304 case R_IA64_IPLTLSB:
2305 /* Shared objects will always need at least a REL relocation. */
2306 if (info->shared || maybe_dynamic)
2307 need_entry = NEED_DYNREL;
2308 break;
2309
2310 case R_IA64_PCREL22:
2311 case R_IA64_PCREL64I:
2312 case R_IA64_PCREL32MSB:
2313 case R_IA64_PCREL32LSB:
2314 case R_IA64_PCREL64MSB:
2315 case R_IA64_PCREL64LSB:
2316 if (maybe_dynamic)
2317 need_entry = NEED_DYNREL;
2318 break;
2319 }
2320
2321 if (!need_entry)
2322 continue;
2323
2324 if ((need_entry & NEED_FPTR) != 0
2325 && rel->r_addend)
2326 {
2327 (*info->callbacks->warning)
2328 (info, _("non-zero addend in @fptr reloc"), 0,
2329 abfd, 0, (bfd_vma) 0);
2330 }
2331
2332 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2333 return FALSE;
2334 }
2335
2336 /* Now, we only do lookup without insertion, which is very fast
2337 with the modified get_dyn_sym_info. */
2338 for (rel = relocs; rel < relend; ++rel)
2339 {
2340 struct elfNN_ia64_dyn_sym_info *dyn_i;
2341 int dynrel_type = R_IA64_NONE;
2342
2343 r_symndx = ELFNN_R_SYM (rel->r_info);
2344 if (r_symndx >= symtab_hdr->sh_info)
2345 {
2346 /* We're dealing with a global symbol -- find its hash entry
2347 and mark it as being referenced. */
2348 long indx = r_symndx - symtab_hdr->sh_info;
2349 h = elf_sym_hashes (abfd)[indx];
2350 while (h->root.type == bfd_link_hash_indirect
2351 || h->root.type == bfd_link_hash_warning)
2352 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2353
2354 h->ref_regular = 1;
2355 }
2356 else
2357 h = NULL;
2358
2359 /* We can only get preliminary data on whether a symbol is
2360 locally or externally defined, as not all of the input files
2361 have yet been processed. Do something with what we know, as
2362 this may help reduce memory usage and processing time later. */
2363 maybe_dynamic = (h && ((!info->executable
2364 && (!SYMBOLIC_BIND (info, h)
2365 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2366 || !h->def_regular
2367 || h->root.type == bfd_link_hash_defweak));
2368
2369 need_entry = 0;
2370 switch (ELFNN_R_TYPE (rel->r_info))
2371 {
2372 case R_IA64_TPREL64MSB:
2373 case R_IA64_TPREL64LSB:
2374 if (info->shared || maybe_dynamic)
2375 need_entry = NEED_DYNREL;
2376 dynrel_type = R_IA64_TPREL64LSB;
2377 if (info->shared)
2378 info->flags |= DF_STATIC_TLS;
2379 break;
2380
2381 case R_IA64_LTOFF_TPREL22:
2382 need_entry = NEED_TPREL;
2383 if (info->shared)
2384 info->flags |= DF_STATIC_TLS;
2385 break;
2386
2387 case R_IA64_DTPREL32MSB:
2388 case R_IA64_DTPREL32LSB:
2389 case R_IA64_DTPREL64MSB:
2390 case R_IA64_DTPREL64LSB:
2391 if (info->shared || maybe_dynamic)
2392 need_entry = NEED_DYNREL;
2393 dynrel_type = R_IA64_DTPRELNNLSB;
2394 break;
2395
2396 case R_IA64_LTOFF_DTPREL22:
2397 need_entry = NEED_DTPREL;
2398 break;
2399
2400 case R_IA64_DTPMOD64MSB:
2401 case R_IA64_DTPMOD64LSB:
2402 if (info->shared || maybe_dynamic)
2403 need_entry = NEED_DYNREL;
2404 dynrel_type = R_IA64_DTPMOD64LSB;
2405 break;
2406
2407 case R_IA64_LTOFF_DTPMOD22:
2408 need_entry = NEED_DTPMOD;
2409 break;
2410
2411 case R_IA64_LTOFF_FPTR22:
2412 case R_IA64_LTOFF_FPTR64I:
2413 case R_IA64_LTOFF_FPTR32MSB:
2414 case R_IA64_LTOFF_FPTR32LSB:
2415 case R_IA64_LTOFF_FPTR64MSB:
2416 case R_IA64_LTOFF_FPTR64LSB:
2417 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2418 break;
2419
2420 case R_IA64_FPTR64I:
2421 case R_IA64_FPTR32MSB:
2422 case R_IA64_FPTR32LSB:
2423 case R_IA64_FPTR64MSB:
2424 case R_IA64_FPTR64LSB:
2425 if (info->shared || h)
2426 need_entry = NEED_FPTR | NEED_DYNREL;
2427 else
2428 need_entry = NEED_FPTR;
2429 dynrel_type = R_IA64_FPTRNNLSB;
2430 break;
2431
2432 case R_IA64_LTOFF22:
2433 case R_IA64_LTOFF64I:
2434 need_entry = NEED_GOT;
2435 break;
2436
2437 case R_IA64_LTOFF22X:
2438 need_entry = NEED_GOTX;
2439 break;
2440
2441 case R_IA64_PLTOFF22:
2442 case R_IA64_PLTOFF64I:
2443 case R_IA64_PLTOFF64MSB:
2444 case R_IA64_PLTOFF64LSB:
2445 need_entry = NEED_PLTOFF;
2446 if (h)
2447 {
2448 if (maybe_dynamic)
2449 need_entry |= NEED_MIN_PLT;
2450 }
2451 break;
2452
2453 case R_IA64_PCREL21B:
2454 case R_IA64_PCREL60B:
2455 /* Depending on where this symbol is defined, we may or may not
2456 need a full plt entry. Only skip if we know we'll not need
2457 the entry -- static or symbolic, and the symbol definition
2458 has already been seen. */
2459 if (maybe_dynamic && rel->r_addend == 0)
2460 need_entry = NEED_FULL_PLT;
2461 break;
2462
2463 case R_IA64_IMM14:
2464 case R_IA64_IMM22:
2465 case R_IA64_IMM64:
2466 case R_IA64_DIR32MSB:
2467 case R_IA64_DIR32LSB:
2468 case R_IA64_DIR64MSB:
2469 case R_IA64_DIR64LSB:
2470 /* Shared objects will always need at least a REL relocation. */
2471 if (info->shared || maybe_dynamic)
2472 need_entry = NEED_DYNREL;
2473 dynrel_type = R_IA64_DIRNNLSB;
2474 break;
2475
2476 case R_IA64_IPLTMSB:
2477 case R_IA64_IPLTLSB:
2478 /* Shared objects will always need at least a REL relocation. */
2479 if (info->shared || maybe_dynamic)
2480 need_entry = NEED_DYNREL;
2481 dynrel_type = R_IA64_IPLTLSB;
2482 break;
2483
2484 case R_IA64_PCREL22:
2485 case R_IA64_PCREL64I:
2486 case R_IA64_PCREL32MSB:
2487 case R_IA64_PCREL32LSB:
2488 case R_IA64_PCREL64MSB:
2489 case R_IA64_PCREL64LSB:
2490 if (maybe_dynamic)
2491 need_entry = NEED_DYNREL;
2492 dynrel_type = R_IA64_PCRELNNLSB;
2493 break;
2494 }
2495
2496 if (!need_entry)
2497 continue;
2498
2499 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2500
2501 /* Record whether or not this is a local symbol. */
2502 dyn_i->h = h;
2503
2504 /* Create what's needed. */
2505 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2506 | NEED_DTPMOD | NEED_DTPREL))
2507 {
2508 if (!got)
2509 {
2510 got = get_got (abfd, info, ia64_info);
2511 if (!got)
2512 return FALSE;
2513 }
2514 if (need_entry & NEED_GOT)
2515 dyn_i->want_got = 1;
2516 if (need_entry & NEED_GOTX)
2517 dyn_i->want_gotx = 1;
2518 if (need_entry & NEED_TPREL)
2519 dyn_i->want_tprel = 1;
2520 if (need_entry & NEED_DTPMOD)
2521 dyn_i->want_dtpmod = 1;
2522 if (need_entry & NEED_DTPREL)
2523 dyn_i->want_dtprel = 1;
2524 }
2525 if (need_entry & NEED_FPTR)
2526 {
2527 if (!fptr)
2528 {
2529 fptr = get_fptr (abfd, info, ia64_info);
2530 if (!fptr)
2531 return FALSE;
2532 }
2533
2534 /* FPTRs for shared libraries are allocated by the dynamic
2535 linker. Make sure this local symbol will appear in the
2536 dynamic symbol table. */
2537 if (!h && info->shared)
2538 {
2539 if (! (bfd_elf_link_record_local_dynamic_symbol
2540 (info, abfd, (long) r_symndx)))
2541 return FALSE;
2542 }
2543
2544 dyn_i->want_fptr = 1;
2545 }
2546 if (need_entry & NEED_LTOFF_FPTR)
2547 dyn_i->want_ltoff_fptr = 1;
2548 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2549 {
2550 if (!ia64_info->root.dynobj)
2551 ia64_info->root.dynobj = abfd;
2552 h->needs_plt = 1;
2553 dyn_i->want_plt = 1;
2554 }
2555 if (need_entry & NEED_FULL_PLT)
2556 dyn_i->want_plt2 = 1;
2557 if (need_entry & NEED_PLTOFF)
2558 {
2559 /* This is needed here, in case @pltoff is used in a non-shared
2560 link. */
2561 if (!pltoff)
2562 {
2563 pltoff = get_pltoff (abfd, info, ia64_info);
2564 if (!pltoff)
2565 return FALSE;
2566 }
2567
2568 dyn_i->want_pltoff = 1;
2569 }
2570 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2571 {
2572 if (!srel)
2573 {
2574 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2575 if (!srel)
2576 return FALSE;
2577 }
2578 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2579 (sec->flags & SEC_READONLY) != 0))
2580 return FALSE;
2581 }
2582 }
2583
2584 return TRUE;
2585 }
2586
2587 /* For cleanliness, and potentially faster dynamic loading, allocate
2588 external GOT entries first. */
2589
2590 static bfd_boolean
2591 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2592 void * data)
2593 {
2594 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2595
2596 if ((dyn_i->want_got || dyn_i->want_gotx)
2597 && ! dyn_i->want_fptr
2598 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2599 {
2600 dyn_i->got_offset = x->ofs;
2601 x->ofs += 8;
2602 }
2603 if (dyn_i->want_tprel)
2604 {
2605 dyn_i->tprel_offset = x->ofs;
2606 x->ofs += 8;
2607 }
2608 if (dyn_i->want_dtpmod)
2609 {
2610 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2611 {
2612 dyn_i->dtpmod_offset = x->ofs;
2613 x->ofs += 8;
2614 }
2615 else
2616 {
2617 struct elfNN_ia64_link_hash_table *ia64_info;
2618
2619 ia64_info = elfNN_ia64_hash_table (x->info);
2620 if (ia64_info == NULL)
2621 return FALSE;
2622
2623 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2624 {
2625 ia64_info->self_dtpmod_offset = x->ofs;
2626 x->ofs += 8;
2627 }
2628 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2629 }
2630 }
2631 if (dyn_i->want_dtprel)
2632 {
2633 dyn_i->dtprel_offset = x->ofs;
2634 x->ofs += 8;
2635 }
2636 return TRUE;
2637 }
2638
2639 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2640
2641 static bfd_boolean
2642 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2643 void * data)
2644 {
2645 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2646
2647 if (dyn_i->want_got
2648 && dyn_i->want_fptr
2649 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2650 {
2651 dyn_i->got_offset = x->ofs;
2652 x->ofs += 8;
2653 }
2654 return TRUE;
2655 }
2656
2657 /* Lastly, allocate all the GOT entries for local data. */
2658
2659 static bfd_boolean
2660 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2661 PTR data)
2662 {
2663 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2664
2665 if ((dyn_i->want_got || dyn_i->want_gotx)
2666 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2667 {
2668 dyn_i->got_offset = x->ofs;
2669 x->ofs += 8;
2670 }
2671 return TRUE;
2672 }
2673
2674 /* Search for the index of a global symbol in it's defining object file. */
2675
2676 static long
2677 global_sym_index (struct elf_link_hash_entry *h)
2678 {
2679 struct elf_link_hash_entry **p;
2680 bfd *obj;
2681
2682 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2683 || h->root.type == bfd_link_hash_defweak);
2684
2685 obj = h->root.u.def.section->owner;
2686 for (p = elf_sym_hashes (obj); *p != h; ++p)
2687 continue;
2688
2689 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2690 }
2691
2692 /* Allocate function descriptors. We can do these for every function
2693 in a main executable that is not exported. */
2694
2695 static bfd_boolean
2696 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)
2697 {
2698 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2699
2700 if (dyn_i->want_fptr)
2701 {
2702 struct elf_link_hash_entry *h = dyn_i->h;
2703
2704 if (h)
2705 while (h->root.type == bfd_link_hash_indirect
2706 || h->root.type == bfd_link_hash_warning)
2707 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2708
2709 if (!x->info->executable
2710 && (!h
2711 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2712 || (h->root.type != bfd_link_hash_undefweak
2713 && h->root.type != bfd_link_hash_undefined)))
2714 {
2715 if (h && h->dynindx == -1)
2716 {
2717 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2718 || (h->root.type == bfd_link_hash_defweak));
2719
2720 if (!bfd_elf_link_record_local_dynamic_symbol
2721 (x->info, h->root.u.def.section->owner,
2722 global_sym_index (h)))
2723 return FALSE;
2724 }
2725
2726 dyn_i->want_fptr = 0;
2727 }
2728 else if (h == NULL || h->dynindx == -1)
2729 {
2730 dyn_i->fptr_offset = x->ofs;
2731 x->ofs += 16;
2732 }
2733 else
2734 dyn_i->want_fptr = 0;
2735 }
2736 return TRUE;
2737 }
2738
2739 /* Allocate all the minimal PLT entries. */
2740
2741 static bfd_boolean
2742 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2743 PTR data)
2744 {
2745 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2746
2747 if (dyn_i->want_plt)
2748 {
2749 struct elf_link_hash_entry *h = dyn_i->h;
2750
2751 if (h)
2752 while (h->root.type == bfd_link_hash_indirect
2753 || h->root.type == bfd_link_hash_warning)
2754 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2755
2756 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2757 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2758 {
2759 bfd_size_type offset = x->ofs;
2760 if (offset == 0)
2761 offset = PLT_HEADER_SIZE;
2762 dyn_i->plt_offset = offset;
2763 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2764
2765 dyn_i->want_pltoff = 1;
2766 }
2767 else
2768 {
2769 dyn_i->want_plt = 0;
2770 dyn_i->want_plt2 = 0;
2771 }
2772 }
2773 return TRUE;
2774 }
2775
2776 /* Allocate all the full PLT entries. */
2777
2778 static bfd_boolean
2779 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2780 PTR data)
2781 {
2782 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2783
2784 if (dyn_i->want_plt2)
2785 {
2786 struct elf_link_hash_entry *h = dyn_i->h;
2787 bfd_size_type ofs = x->ofs;
2788
2789 dyn_i->plt2_offset = ofs;
2790 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2791
2792 while (h->root.type == bfd_link_hash_indirect
2793 || h->root.type == bfd_link_hash_warning)
2794 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2795 dyn_i->h->plt.offset = ofs;
2796 }
2797 return TRUE;
2798 }
2799
2800 /* Allocate all the PLTOFF entries requested by relocations and
2801 plt entries. We can't share space with allocated FPTR entries,
2802 because the latter are not necessarily addressable by the GP.
2803 ??? Relaxation might be able to determine that they are. */
2804
2805 static bfd_boolean
2806 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2807 PTR data)
2808 {
2809 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2810
2811 if (dyn_i->want_pltoff)
2812 {
2813 dyn_i->pltoff_offset = x->ofs;
2814 x->ofs += 16;
2815 }
2816 return TRUE;
2817 }
2818
2819 /* Allocate dynamic relocations for those symbols that turned out
2820 to be dynamic. */
2821
2822 static bfd_boolean
2823 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2824 PTR data)
2825 {
2826 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2827 struct elfNN_ia64_link_hash_table *ia64_info;
2828 struct elfNN_ia64_dyn_reloc_entry *rent;
2829 bfd_boolean dynamic_symbol, shared, resolved_zero;
2830
2831 ia64_info = elfNN_ia64_hash_table (x->info);
2832 if (ia64_info == NULL)
2833 return FALSE;
2834
2835 /* Note that this can't be used in relation to FPTR relocs below. */
2836 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2837
2838 shared = x->info->shared;
2839 resolved_zero = (dyn_i->h
2840 && ELF_ST_VISIBILITY (dyn_i->h->other)
2841 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2842
2843 /* Take care of the GOT and PLT relocations. */
2844
2845 if ((!resolved_zero
2846 && (dynamic_symbol || shared)
2847 && (dyn_i->want_got || dyn_i->want_gotx))
2848 || (dyn_i->want_ltoff_fptr
2849 && dyn_i->h
2850 && dyn_i->h->dynindx != -1))
2851 {
2852 if (!dyn_i->want_ltoff_fptr
2853 || !x->info->pie
2854 || dyn_i->h == NULL
2855 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2856 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2857 }
2858 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2859 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2860 if (dynamic_symbol && dyn_i->want_dtpmod)
2861 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2862 if (dynamic_symbol && dyn_i->want_dtprel)
2863 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2864
2865 if (x->only_got)
2866 return TRUE;
2867
2868 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2869 {
2870 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2871 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2872 }
2873
2874 if (!resolved_zero && dyn_i->want_pltoff)
2875 {
2876 bfd_size_type t = 0;
2877
2878 /* Dynamic symbols get one IPLT relocation. Local symbols in
2879 shared libraries get two REL relocations. Local symbols in
2880 main applications get nothing. */
2881 if (dynamic_symbol)
2882 t = sizeof (ElfNN_External_Rela);
2883 else if (shared)
2884 t = 2 * sizeof (ElfNN_External_Rela);
2885
2886 ia64_info->rel_pltoff_sec->size += t;
2887 }
2888
2889 /* Take care of the normal data relocations. */
2890
2891 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2892 {
2893 int count = rent->count;
2894
2895 switch (rent->type)
2896 {
2897 case R_IA64_FPTR32LSB:
2898 case R_IA64_FPTR64LSB:
2899 /* Allocate one iff !want_fptr and not PIE, which by this point
2900 will be true only if we're actually allocating one statically
2901 in the main executable. Position independent executables
2902 need a relative reloc. */
2903 if (dyn_i->want_fptr && !x->info->pie)
2904 continue;
2905 break;
2906 case R_IA64_PCREL32LSB:
2907 case R_IA64_PCREL64LSB:
2908 if (!dynamic_symbol)
2909 continue;
2910 break;
2911 case R_IA64_DIR32LSB:
2912 case R_IA64_DIR64LSB:
2913 if (!dynamic_symbol && !shared)
2914 continue;
2915 break;
2916 case R_IA64_IPLTLSB:
2917 if (!dynamic_symbol && !shared)
2918 continue;
2919 /* Use two REL relocations for IPLT relocations
2920 against local symbols. */
2921 if (!dynamic_symbol)
2922 count *= 2;
2923 break;
2924 case R_IA64_DTPREL32LSB:
2925 case R_IA64_TPREL64LSB:
2926 case R_IA64_DTPREL64LSB:
2927 case R_IA64_DTPMOD64LSB:
2928 break;
2929 default:
2930 abort ();
2931 }
2932 if (rent->reltext)
2933 ia64_info->reltext = 1;
2934 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2935 }
2936
2937 return TRUE;
2938 }
2939
2940 static bfd_boolean
2941 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2942 struct elf_link_hash_entry *h)
2943 {
2944 /* ??? Undefined symbols with PLT entries should be re-defined
2945 to be the PLT entry. */
2946
2947 /* If this is a weak symbol, and there is a real definition, the
2948 processor independent code will have arranged for us to see the
2949 real definition first, and we can just use the same value. */
2950 if (h->u.weakdef != NULL)
2951 {
2952 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2953 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2954 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2955 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2956 return TRUE;
2957 }
2958
2959 /* If this is a reference to a symbol defined by a dynamic object which
2960 is not a function, we might allocate the symbol in our .dynbss section
2961 and allocate a COPY dynamic relocation.
2962
2963 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2964 of hackery. */
2965
2966 return TRUE;
2967 }
2968
2969 static bfd_boolean
2970 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2971 struct bfd_link_info *info)
2972 {
2973 struct elfNN_ia64_allocate_data data;
2974 struct elfNN_ia64_link_hash_table *ia64_info;
2975 asection *sec;
2976 bfd *dynobj;
2977 bfd_boolean relplt = FALSE;
2978
2979 dynobj = elf_hash_table(info)->dynobj;
2980 ia64_info = elfNN_ia64_hash_table (info);
2981 if (ia64_info == NULL)
2982 return FALSE;
2983 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2984 BFD_ASSERT(dynobj != NULL);
2985 data.info = info;
2986
2987 /* Set the contents of the .interp section to the interpreter. */
2988 if (ia64_info->root.dynamic_sections_created
2989 && info->executable)
2990 {
2991 sec = bfd_get_section_by_name (dynobj, ".interp");
2992 BFD_ASSERT (sec != NULL);
2993 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2994 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2995 }
2996
2997 /* Allocate the GOT entries. */
2998
2999 if (ia64_info->root.sgot)
3000 {
3001 data.ofs = 0;
3002 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3003 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3004 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3005 ia64_info->root.sgot->size = data.ofs;
3006 }
3007
3008 /* Allocate the FPTR entries. */
3009
3010 if (ia64_info->fptr_sec)
3011 {
3012 data.ofs = 0;
3013 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3014 ia64_info->fptr_sec->size = data.ofs;
3015 }
3016
3017 /* Now that we've seen all of the input files, we can decide which
3018 symbols need plt entries. Allocate the minimal PLT entries first.
3019 We do this even though dynamic_sections_created may be FALSE, because
3020 this has the side-effect of clearing want_plt and want_plt2. */
3021
3022 data.ofs = 0;
3023 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3024
3025 ia64_info->minplt_entries = 0;
3026 if (data.ofs)
3027 {
3028 ia64_info->minplt_entries
3029 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3030 }
3031
3032 /* Align the pointer for the plt2 entries. */
3033 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3034
3035 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3036 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3037 {
3038 /* FIXME: we always reserve the memory for dynamic linker even if
3039 there are no PLT entries since dynamic linker may assume the
3040 reserved memory always exists. */
3041
3042 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3043
3044 ia64_info->root.splt->size = data.ofs;
3045
3046 /* If we've got a .plt, we need some extra memory for the dynamic
3047 linker. We stuff these in .got.plt. */
3048 sec = bfd_get_section_by_name (dynobj, ".got.plt");
3049 sec->size = 8 * PLT_RESERVED_WORDS;
3050 }
3051
3052 /* Allocate the PLTOFF entries. */
3053
3054 if (ia64_info->pltoff_sec)
3055 {
3056 data.ofs = 0;
3057 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3058 ia64_info->pltoff_sec->size = data.ofs;
3059 }
3060
3061 if (ia64_info->root.dynamic_sections_created)
3062 {
3063 /* Allocate space for the dynamic relocations that turned out to be
3064 required. */
3065
3066 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3067 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3068 data.only_got = FALSE;
3069 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3070 }
3071
3072 /* We have now determined the sizes of the various dynamic sections.
3073 Allocate memory for them. */
3074 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3075 {
3076 bfd_boolean strip;
3077
3078 if (!(sec->flags & SEC_LINKER_CREATED))
3079 continue;
3080
3081 /* If we don't need this section, strip it from the output file.
3082 There were several sections primarily related to dynamic
3083 linking that must be create before the linker maps input
3084 sections to output sections. The linker does that before
3085 bfd_elf_size_dynamic_sections is called, and it is that
3086 function which decides whether anything needs to go into
3087 these sections. */
3088
3089 strip = (sec->size == 0);
3090
3091 if (sec == ia64_info->root.sgot)
3092 strip = FALSE;
3093 else if (sec == ia64_info->root.srelgot)
3094 {
3095 if (strip)
3096 ia64_info->root.srelgot = NULL;
3097 else
3098 /* We use the reloc_count field as a counter if we need to
3099 copy relocs into the output file. */
3100 sec->reloc_count = 0;
3101 }
3102 else if (sec == ia64_info->fptr_sec)
3103 {
3104 if (strip)
3105 ia64_info->fptr_sec = NULL;
3106 }
3107 else if (sec == ia64_info->rel_fptr_sec)
3108 {
3109 if (strip)
3110 ia64_info->rel_fptr_sec = NULL;
3111 else
3112 /* We use the reloc_count field as a counter if we need to
3113 copy relocs into the output file. */
3114 sec->reloc_count = 0;
3115 }
3116 else if (sec == ia64_info->root.splt)
3117 {
3118 if (strip)
3119 ia64_info->root.splt = NULL;
3120 }
3121 else if (sec == ia64_info->pltoff_sec)
3122 {
3123 if (strip)
3124 ia64_info->pltoff_sec = NULL;
3125 }
3126 else if (sec == ia64_info->rel_pltoff_sec)
3127 {
3128 if (strip)
3129 ia64_info->rel_pltoff_sec = NULL;
3130 else
3131 {
3132 relplt = TRUE;
3133 /* We use the reloc_count field as a counter if we need to
3134 copy relocs into the output file. */
3135 sec->reloc_count = 0;
3136 }
3137 }
3138 else
3139 {
3140 const char *name;
3141
3142 /* It's OK to base decisions on the section name, because none
3143 of the dynobj section names depend upon the input files. */
3144 name = bfd_get_section_name (dynobj, sec);
3145
3146 if (strcmp (name, ".got.plt") == 0)
3147 strip = FALSE;
3148 else if (CONST_STRNEQ (name, ".rel"))
3149 {
3150 if (!strip)
3151 {
3152 /* We use the reloc_count field as a counter if we need to
3153 copy relocs into the output file. */
3154 sec->reloc_count = 0;
3155 }
3156 }
3157 else
3158 continue;
3159 }
3160
3161 if (strip)
3162 sec->flags |= SEC_EXCLUDE;
3163 else
3164 {
3165 /* Allocate memory for the section contents. */
3166 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3167 if (sec->contents == NULL && sec->size != 0)
3168 return FALSE;
3169 }
3170 }
3171
3172 if (elf_hash_table (info)->dynamic_sections_created)
3173 {
3174 /* Add some entries to the .dynamic section. We fill in the values
3175 later (in finish_dynamic_sections) but we must add the entries now
3176 so that we get the correct size for the .dynamic section. */
3177
3178 if (info->executable)
3179 {
3180 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3181 by the debugger. */
3182 #define add_dynamic_entry(TAG, VAL) \
3183 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3184
3185 if (!add_dynamic_entry (DT_DEBUG, 0))
3186 return FALSE;
3187 }
3188
3189 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3190 return FALSE;
3191 if (!add_dynamic_entry (DT_PLTGOT, 0))
3192 return FALSE;
3193
3194 if (relplt)
3195 {
3196 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3197 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3198 || !add_dynamic_entry (DT_JMPREL, 0))
3199 return FALSE;
3200 }
3201
3202 if (!add_dynamic_entry (DT_RELA, 0)
3203 || !add_dynamic_entry (DT_RELASZ, 0)
3204 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3205 return FALSE;
3206
3207 if (ia64_info->reltext)
3208 {
3209 if (!add_dynamic_entry (DT_TEXTREL, 0))
3210 return FALSE;
3211 info->flags |= DF_TEXTREL;
3212 }
3213 }
3214
3215 /* ??? Perhaps force __gp local. */
3216
3217 return TRUE;
3218 }
3219
3220 static void
3221 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3222 asection *sec, asection *srel,
3223 bfd_vma offset, unsigned int type,
3224 long dynindx, bfd_vma addend)
3225 {
3226 Elf_Internal_Rela outrel;
3227 bfd_byte *loc;
3228
3229 BFD_ASSERT (dynindx != -1);
3230 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3231 outrel.r_addend = addend;
3232 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3233 if (outrel.r_offset >= (bfd_vma) -2)
3234 {
3235 /* Run for the hills. We shouldn't be outputting a relocation
3236 for this. So do what everyone else does and output a no-op. */
3237 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3238 outrel.r_addend = 0;
3239 outrel.r_offset = 0;
3240 }
3241 else
3242 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3243
3244 loc = srel->contents;
3245 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3246 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3247 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3248 }
3249
3250 /* Store an entry for target address TARGET_ADDR in the linkage table
3251 and return the gp-relative address of the linkage table entry. */
3252
3253 static bfd_vma
3254 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3255 struct elfNN_ia64_dyn_sym_info *dyn_i,
3256 long dynindx, bfd_vma addend, bfd_vma value,
3257 unsigned int dyn_r_type)
3258 {
3259 struct elfNN_ia64_link_hash_table *ia64_info;
3260 asection *got_sec;
3261 bfd_boolean done;
3262 bfd_vma got_offset;
3263
3264 ia64_info = elfNN_ia64_hash_table (info);
3265 if (ia64_info == NULL)
3266 return 0;
3267
3268 got_sec = ia64_info->root.sgot;
3269
3270 switch (dyn_r_type)
3271 {
3272 case R_IA64_TPREL64LSB:
3273 done = dyn_i->tprel_done;
3274 dyn_i->tprel_done = TRUE;
3275 got_offset = dyn_i->tprel_offset;
3276 break;
3277 case R_IA64_DTPMOD64LSB:
3278 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3279 {
3280 done = dyn_i->dtpmod_done;
3281 dyn_i->dtpmod_done = TRUE;
3282 }
3283 else
3284 {
3285 done = ia64_info->self_dtpmod_done;
3286 ia64_info->self_dtpmod_done = TRUE;
3287 dynindx = 0;
3288 }
3289 got_offset = dyn_i->dtpmod_offset;
3290 break;
3291 case R_IA64_DTPREL32LSB:
3292 case R_IA64_DTPREL64LSB:
3293 done = dyn_i->dtprel_done;
3294 dyn_i->dtprel_done = TRUE;
3295 got_offset = dyn_i->dtprel_offset;
3296 break;
3297 default:
3298 done = dyn_i->got_done;
3299 dyn_i->got_done = TRUE;
3300 got_offset = dyn_i->got_offset;
3301 break;
3302 }
3303
3304 BFD_ASSERT ((got_offset & 7) == 0);
3305
3306 if (! done)
3307 {
3308 /* Store the target address in the linkage table entry. */
3309 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3310
3311 /* Install a dynamic relocation if needed. */
3312 if (((info->shared
3313 && (!dyn_i->h
3314 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3315 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3316 && dyn_r_type != R_IA64_DTPREL32LSB
3317 && dyn_r_type != R_IA64_DTPREL64LSB)
3318 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3319 || (dynindx != -1
3320 && (dyn_r_type == R_IA64_FPTR32LSB
3321 || dyn_r_type == R_IA64_FPTR64LSB)))
3322 && (!dyn_i->want_ltoff_fptr
3323 || !info->pie
3324 || !dyn_i->h
3325 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3326 {
3327 if (dynindx == -1
3328 && dyn_r_type != R_IA64_TPREL64LSB
3329 && dyn_r_type != R_IA64_DTPMOD64LSB
3330 && dyn_r_type != R_IA64_DTPREL32LSB
3331 && dyn_r_type != R_IA64_DTPREL64LSB)
3332 {
3333 dyn_r_type = R_IA64_RELNNLSB;
3334 dynindx = 0;
3335 addend = value;
3336 }
3337
3338 if (bfd_big_endian (abfd))
3339 {
3340 switch (dyn_r_type)
3341 {
3342 case R_IA64_REL32LSB:
3343 dyn_r_type = R_IA64_REL32MSB;
3344 break;
3345 case R_IA64_DIR32LSB:
3346 dyn_r_type = R_IA64_DIR32MSB;
3347 break;
3348 case R_IA64_FPTR32LSB:
3349 dyn_r_type = R_IA64_FPTR32MSB;
3350 break;
3351 case R_IA64_DTPREL32LSB:
3352 dyn_r_type = R_IA64_DTPREL32MSB;
3353 break;
3354 case R_IA64_REL64LSB:
3355 dyn_r_type = R_IA64_REL64MSB;
3356 break;
3357 case R_IA64_DIR64LSB:
3358 dyn_r_type = R_IA64_DIR64MSB;
3359 break;
3360 case R_IA64_FPTR64LSB:
3361 dyn_r_type = R_IA64_FPTR64MSB;
3362 break;
3363 case R_IA64_TPREL64LSB:
3364 dyn_r_type = R_IA64_TPREL64MSB;
3365 break;
3366 case R_IA64_DTPMOD64LSB:
3367 dyn_r_type = R_IA64_DTPMOD64MSB;
3368 break;
3369 case R_IA64_DTPREL64LSB:
3370 dyn_r_type = R_IA64_DTPREL64MSB;
3371 break;
3372 default:
3373 BFD_ASSERT (FALSE);
3374 break;
3375 }
3376 }
3377
3378 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3379 ia64_info->root.srelgot,
3380 got_offset, dyn_r_type,
3381 dynindx, addend);
3382 }
3383 }
3384
3385 /* Return the address of the linkage table entry. */
3386 value = (got_sec->output_section->vma
3387 + got_sec->output_offset
3388 + got_offset);
3389
3390 return value;
3391 }
3392
3393 /* Fill in a function descriptor consisting of the function's code
3394 address and its global pointer. Return the descriptor's address. */
3395
3396 static bfd_vma
3397 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3398 struct elfNN_ia64_dyn_sym_info *dyn_i,
3399 bfd_vma value)
3400 {
3401 struct elfNN_ia64_link_hash_table *ia64_info;
3402 asection *fptr_sec;
3403
3404 ia64_info = elfNN_ia64_hash_table (info);
3405 if (ia64_info == NULL)
3406 return 0;
3407
3408 fptr_sec = ia64_info->fptr_sec;
3409
3410 if (!dyn_i->fptr_done)
3411 {
3412 dyn_i->fptr_done = 1;
3413
3414 /* Fill in the function descriptor. */
3415 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3416 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3417 fptr_sec->contents + dyn_i->fptr_offset + 8);
3418 if (ia64_info->rel_fptr_sec)
3419 {
3420 Elf_Internal_Rela outrel;
3421 bfd_byte *loc;
3422
3423 if (bfd_little_endian (abfd))
3424 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3425 else
3426 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3427 outrel.r_addend = value;
3428 outrel.r_offset = (fptr_sec->output_section->vma
3429 + fptr_sec->output_offset
3430 + dyn_i->fptr_offset);
3431 loc = ia64_info->rel_fptr_sec->contents;
3432 loc += ia64_info->rel_fptr_sec->reloc_count++
3433 * sizeof (ElfNN_External_Rela);
3434 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3435 }
3436 }
3437
3438 /* Return the descriptor's address. */
3439 value = (fptr_sec->output_section->vma
3440 + fptr_sec->output_offset
3441 + dyn_i->fptr_offset);
3442
3443 return value;
3444 }
3445
3446 /* Fill in a PLTOFF entry consisting of the function's code address
3447 and its global pointer. Return the descriptor's address. */
3448
3449 static bfd_vma
3450 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3451 struct elfNN_ia64_dyn_sym_info *dyn_i,
3452 bfd_vma value, bfd_boolean is_plt)
3453 {
3454 struct elfNN_ia64_link_hash_table *ia64_info;
3455 asection *pltoff_sec;
3456
3457 ia64_info = elfNN_ia64_hash_table (info);
3458 if (ia64_info == NULL)
3459 return 0;
3460
3461 pltoff_sec = ia64_info->pltoff_sec;
3462
3463 /* Don't do anything if this symbol uses a real PLT entry. In
3464 that case, we'll fill this in during finish_dynamic_symbol. */
3465 if ((! dyn_i->want_plt || is_plt)
3466 && !dyn_i->pltoff_done)
3467 {
3468 bfd_vma gp = _bfd_get_gp_value (abfd);
3469
3470 /* Fill in the function descriptor. */
3471 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3472 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3473
3474 /* Install dynamic relocations if needed. */
3475 if (!is_plt
3476 && info->shared
3477 && (!dyn_i->h
3478 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3479 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3480 {
3481 unsigned int dyn_r_type;
3482
3483 if (bfd_big_endian (abfd))
3484 dyn_r_type = R_IA64_RELNNMSB;
3485 else
3486 dyn_r_type = R_IA64_RELNNLSB;
3487
3488 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3489 ia64_info->rel_pltoff_sec,
3490 dyn_i->pltoff_offset,
3491 dyn_r_type, 0, value);
3492 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3493 ia64_info->rel_pltoff_sec,
3494 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3495 dyn_r_type, 0, gp);
3496 }
3497
3498 dyn_i->pltoff_done = 1;
3499 }
3500
3501 /* Return the descriptor's address. */
3502 value = (pltoff_sec->output_section->vma
3503 + pltoff_sec->output_offset
3504 + dyn_i->pltoff_offset);
3505
3506 return value;
3507 }
3508
3509 /* Return the base VMA address which should be subtracted from real addresses
3510 when resolving @tprel() relocation.
3511 Main program TLS (whose template starts at PT_TLS p_vaddr)
3512 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3513
3514 static bfd_vma
3515 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3516 {
3517 asection *tls_sec = elf_hash_table (info)->tls_sec;
3518 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3519 tls_sec->alignment_power);
3520 }
3521
3522 /* Return the base VMA address which should be subtracted from real addresses
3523 when resolving @dtprel() relocation.
3524 This is PT_TLS segment p_vaddr. */
3525
3526 static bfd_vma
3527 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3528 {
3529 return elf_hash_table (info)->tls_sec->vma;
3530 }
3531
3532 /* Called through qsort to sort the .IA_64.unwind section during a
3533 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3534 to the output bfd so we can do proper endianness frobbing. */
3535
3536 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3537
3538 static int
3539 elfNN_ia64_unwind_entry_compare (const PTR a, const PTR b)
3540 {
3541 bfd_vma av, bv;
3542
3543 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3544 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3545
3546 return (av < bv ? -1 : av > bv ? 1 : 0);
3547 }
3548
3549 /* Make sure we've got ourselves a nice fat __gp value. */
3550 static bfd_boolean
3551 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3552 {
3553 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3554 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3555 struct elf_link_hash_entry *gp;
3556 bfd_vma gp_val;
3557 asection *os;
3558 struct elfNN_ia64_link_hash_table *ia64_info;
3559
3560 ia64_info = elfNN_ia64_hash_table (info);
3561 if (ia64_info == NULL)
3562 return FALSE;
3563
3564 /* Find the min and max vma of all sections marked short. Also collect
3565 min and max vma of any type, for use in selecting a nice gp. */
3566 for (os = abfd->sections; os ; os = os->next)
3567 {
3568 bfd_vma lo, hi;
3569
3570 if ((os->flags & SEC_ALLOC) == 0)
3571 continue;
3572
3573 lo = os->vma;
3574 /* When this function is called from elfNN_ia64_final_link
3575 the correct value to use is os->size. When called from
3576 elfNN_ia64_relax_section we are in the middle of section
3577 sizing; some sections will already have os->size set, others
3578 will have os->size zero and os->rawsize the previous size. */
3579 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3580 if (hi < lo)
3581 hi = (bfd_vma) -1;
3582
3583 if (min_vma > lo)
3584 min_vma = lo;
3585 if (max_vma < hi)
3586 max_vma = hi;
3587 if (os->flags & SEC_SMALL_DATA)
3588 {
3589 if (min_short_vma > lo)
3590 min_short_vma = lo;
3591 if (max_short_vma < hi)
3592 max_short_vma = hi;
3593 }
3594 }
3595
3596 if (ia64_info->min_short_sec)
3597 {
3598 if (min_short_vma
3599 > (ia64_info->min_short_sec->vma
3600 + ia64_info->min_short_offset))
3601 min_short_vma = (ia64_info->min_short_sec->vma
3602 + ia64_info->min_short_offset);
3603 if (max_short_vma
3604 < (ia64_info->max_short_sec->vma
3605 + ia64_info->max_short_offset))
3606 max_short_vma = (ia64_info->max_short_sec->vma
3607 + ia64_info->max_short_offset);
3608 }
3609
3610 /* See if the user wants to force a value. */
3611 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3612 FALSE, FALSE);
3613
3614 if (gp
3615 && (gp->root.type == bfd_link_hash_defined
3616 || gp->root.type == bfd_link_hash_defweak))
3617 {
3618 asection *gp_sec = gp->root.u.def.section;
3619 gp_val = (gp->root.u.def.value
3620 + gp_sec->output_section->vma
3621 + gp_sec->output_offset);
3622 }
3623 else
3624 {
3625 /* Pick a sensible value. */
3626
3627 if (ia64_info->min_short_sec)
3628 {
3629 bfd_vma short_range = max_short_vma - min_short_vma;
3630
3631 /* If min_short_sec is set, pick one in the middle bewteen
3632 min_short_vma and max_short_vma. */
3633 if (short_range >= 0x400000)
3634 goto overflow;
3635 gp_val = min_short_vma + short_range / 2;
3636 }
3637 else
3638 {
3639 asection *got_sec = ia64_info->root.sgot;
3640
3641 /* Start with just the address of the .got. */
3642 if (got_sec)
3643 gp_val = got_sec->output_section->vma;
3644 else if (max_short_vma != 0)
3645 gp_val = min_short_vma;
3646 else if (max_vma - min_vma < 0x200000)
3647 gp_val = min_vma;
3648 else
3649 gp_val = max_vma - 0x200000 + 8;
3650 }
3651
3652 /* If it is possible to address the entire image, but we
3653 don't with the choice above, adjust. */
3654 if (max_vma - min_vma < 0x400000
3655 && (max_vma - gp_val >= 0x200000
3656 || gp_val - min_vma > 0x200000))
3657 gp_val = min_vma + 0x200000;
3658 else if (max_short_vma != 0)
3659 {
3660 /* If we don't cover all the short data, adjust. */
3661 if (max_short_vma - gp_val >= 0x200000)
3662 gp_val = min_short_vma + 0x200000;
3663
3664 /* If we're addressing stuff past the end, adjust back. */
3665 if (gp_val > max_vma)
3666 gp_val = max_vma - 0x200000 + 8;
3667 }
3668 }
3669
3670 /* Validate whether all SHF_IA_64_SHORT sections are within
3671 range of the chosen GP. */
3672
3673 if (max_short_vma != 0)
3674 {
3675 if (max_short_vma - min_short_vma >= 0x400000)
3676 {
3677 overflow:
3678 (*_bfd_error_handler)
3679 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3680 bfd_get_filename (abfd),
3681 (unsigned long) (max_short_vma - min_short_vma));
3682 return FALSE;
3683 }
3684 else if ((gp_val > min_short_vma
3685 && gp_val - min_short_vma > 0x200000)
3686 || (gp_val < max_short_vma
3687 && max_short_vma - gp_val >= 0x200000))
3688 {
3689 (*_bfd_error_handler)
3690 (_("%s: __gp does not cover short data segment"),
3691 bfd_get_filename (abfd));
3692 return FALSE;
3693 }
3694 }
3695
3696 _bfd_set_gp_value (abfd, gp_val);
3697
3698 return TRUE;
3699 }
3700
3701 static bfd_boolean
3702 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3703 {
3704 struct elfNN_ia64_link_hash_table *ia64_info;
3705 asection *unwind_output_sec;
3706
3707 ia64_info = elfNN_ia64_hash_table (info);
3708 if (ia64_info == NULL)
3709 return FALSE;
3710
3711 /* Make sure we've got ourselves a nice fat __gp value. */
3712 if (!info->relocatable)
3713 {
3714 bfd_vma gp_val;
3715 struct elf_link_hash_entry *gp;
3716
3717 /* We assume after gp is set, section size will only decrease. We
3718 need to adjust gp for it. */
3719 _bfd_set_gp_value (abfd, 0);
3720 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3721 return FALSE;
3722 gp_val = _bfd_get_gp_value (abfd);
3723
3724 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3725 FALSE, FALSE);
3726 if (gp)
3727 {
3728 gp->root.type = bfd_link_hash_defined;
3729 gp->root.u.def.value = gp_val;
3730 gp->root.u.def.section = bfd_abs_section_ptr;
3731 }
3732 }
3733
3734 /* If we're producing a final executable, we need to sort the contents
3735 of the .IA_64.unwind section. Force this section to be relocated
3736 into memory rather than written immediately to the output file. */
3737 unwind_output_sec = NULL;
3738 if (!info->relocatable)
3739 {
3740 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3741 if (s)
3742 {
3743 unwind_output_sec = s->output_section;
3744 unwind_output_sec->contents
3745 = bfd_malloc (unwind_output_sec->size);
3746 if (unwind_output_sec->contents == NULL)
3747 return FALSE;
3748 }
3749 }
3750
3751 /* Invoke the regular ELF backend linker to do all the work. */
3752 if (!bfd_elf_final_link (abfd, info))
3753 return FALSE;
3754
3755 if (unwind_output_sec)
3756 {
3757 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3758 qsort (unwind_output_sec->contents,
3759 (size_t) (unwind_output_sec->size / 24),
3760 24,
3761 elfNN_ia64_unwind_entry_compare);
3762
3763 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3764 unwind_output_sec->contents, (bfd_vma) 0,
3765 unwind_output_sec->size))
3766 return FALSE;
3767 }
3768
3769 return TRUE;
3770 }
3771
3772 static bfd_boolean
3773 elfNN_ia64_relocate_section (bfd *output_bfd,
3774 struct bfd_link_info *info,
3775 bfd *input_bfd,
3776 asection *input_section,
3777 bfd_byte *contents,
3778 Elf_Internal_Rela *relocs,
3779 Elf_Internal_Sym *local_syms,
3780 asection **local_sections)
3781 {
3782 struct elfNN_ia64_link_hash_table *ia64_info;
3783 Elf_Internal_Shdr *symtab_hdr;
3784 Elf_Internal_Rela *rel;
3785 Elf_Internal_Rela *relend;
3786 asection *srel;
3787 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3788 bfd_vma gp_val;
3789
3790 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3791 ia64_info = elfNN_ia64_hash_table (info);
3792 if (ia64_info == NULL)
3793 return FALSE;
3794
3795 /* Infect various flags from the input section to the output section. */
3796 if (info->relocatable)
3797 {
3798 bfd_vma flags;
3799
3800 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3801 flags &= SHF_IA_64_NORECOV;
3802
3803 elf_section_data(input_section->output_section)
3804 ->this_hdr.sh_flags |= flags;
3805 }
3806
3807 gp_val = _bfd_get_gp_value (output_bfd);
3808 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3809
3810 rel = relocs;
3811 relend = relocs + input_section->reloc_count;
3812 for (; rel < relend; ++rel)
3813 {
3814 struct elf_link_hash_entry *h;
3815 struct elfNN_ia64_dyn_sym_info *dyn_i;
3816 bfd_reloc_status_type r;
3817 reloc_howto_type *howto;
3818 unsigned long r_symndx;
3819 Elf_Internal_Sym *sym;
3820 unsigned int r_type;
3821 bfd_vma value;
3822 asection *sym_sec;
3823 bfd_byte *hit_addr;
3824 bfd_boolean dynamic_symbol_p;
3825 bfd_boolean undef_weak_ref;
3826
3827 r_type = ELFNN_R_TYPE (rel->r_info);
3828 if (r_type > R_IA64_MAX_RELOC_CODE)
3829 {
3830 (*_bfd_error_handler)
3831 (_("%B: unknown relocation type %d"),
3832 input_bfd, (int) r_type);
3833 bfd_set_error (bfd_error_bad_value);
3834 ret_val = FALSE;
3835 continue;
3836 }
3837
3838 howto = ia64_elf_lookup_howto (r_type);
3839 r_symndx = ELFNN_R_SYM (rel->r_info);
3840 h = NULL;
3841 sym = NULL;
3842 sym_sec = NULL;
3843 undef_weak_ref = FALSE;
3844
3845 if (r_symndx < symtab_hdr->sh_info)
3846 {
3847 /* Reloc against local symbol. */
3848 asection *msec;
3849 sym = local_syms + r_symndx;
3850 sym_sec = local_sections[r_symndx];
3851 msec = sym_sec;
3852 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3853 if (!info->relocatable
3854 && (sym_sec->flags & SEC_MERGE) != 0
3855 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3856 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3857 {
3858 struct elfNN_ia64_local_hash_entry *loc_h;
3859
3860 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3861 if (loc_h && ! loc_h->sec_merge_done)
3862 {
3863 struct elfNN_ia64_dyn_sym_info *dynent;
3864 unsigned int count;
3865
3866 for (count = loc_h->count, dynent = loc_h->info;
3867 count != 0;
3868 count--, dynent++)
3869 {
3870 msec = sym_sec;
3871 dynent->addend =
3872 _bfd_merged_section_offset (output_bfd, &msec,
3873 elf_section_data (msec)->
3874 sec_info,
3875 sym->st_value
3876 + dynent->addend);
3877 dynent->addend -= sym->st_value;
3878 dynent->addend += msec->output_section->vma
3879 + msec->output_offset
3880 - sym_sec->output_section->vma
3881 - sym_sec->output_offset;
3882 }
3883
3884 /* We may have introduced duplicated entries. We need
3885 to remove them properly. */
3886 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3887 if (count != loc_h->count)
3888 {
3889 loc_h->count = count;
3890 loc_h->sorted_count = count;
3891 }
3892
3893 loc_h->sec_merge_done = 1;
3894 }
3895 }
3896 }
3897 else
3898 {
3899 bfd_boolean unresolved_reloc;
3900 bfd_boolean warned;
3901 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3902
3903 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3904 r_symndx, symtab_hdr, sym_hashes,
3905 h, sym_sec, value,
3906 unresolved_reloc, warned);
3907
3908 if (h->root.type == bfd_link_hash_undefweak)
3909 undef_weak_ref = TRUE;
3910 else if (warned)
3911 continue;
3912 }
3913
3914 if (sym_sec != NULL && discarded_section (sym_sec))
3915 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3916 rel, 1, relend, howto, 0, contents);
3917
3918 if (info->relocatable)
3919 continue;
3920
3921 hit_addr = contents + rel->r_offset;
3922 value += rel->r_addend;
3923 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3924
3925 switch (r_type)
3926 {
3927 case R_IA64_NONE:
3928 case R_IA64_LDXMOV:
3929 continue;
3930
3931 case R_IA64_IMM14:
3932 case R_IA64_IMM22:
3933 case R_IA64_IMM64:
3934 case R_IA64_DIR32MSB:
3935 case R_IA64_DIR32LSB:
3936 case R_IA64_DIR64MSB:
3937 case R_IA64_DIR64LSB:
3938 /* Install a dynamic relocation for this reloc. */
3939 if ((dynamic_symbol_p || info->shared)
3940 && r_symndx != STN_UNDEF
3941 && (input_section->flags & SEC_ALLOC) != 0)
3942 {
3943 unsigned int dyn_r_type;
3944 long dynindx;
3945 bfd_vma addend;
3946
3947 BFD_ASSERT (srel != NULL);
3948
3949 switch (r_type)
3950 {
3951 case R_IA64_IMM14:
3952 case R_IA64_IMM22:
3953 case R_IA64_IMM64:
3954 /* ??? People shouldn't be doing non-pic code in
3955 shared libraries nor dynamic executables. */
3956 (*_bfd_error_handler)
3957 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3958 input_bfd,
3959 h ? h->root.root.string
3960 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3961 sym_sec));
3962 ret_val = FALSE;
3963 continue;
3964
3965 default:
3966 break;
3967 }
3968
3969 /* If we don't need dynamic symbol lookup, find a
3970 matching RELATIVE relocation. */
3971 dyn_r_type = r_type;
3972 if (dynamic_symbol_p)
3973 {
3974 dynindx = h->dynindx;
3975 addend = rel->r_addend;
3976 value = 0;
3977 }
3978 else
3979 {
3980 switch (r_type)
3981 {
3982 case R_IA64_DIR32MSB:
3983 dyn_r_type = R_IA64_REL32MSB;
3984 break;
3985 case R_IA64_DIR32LSB:
3986 dyn_r_type = R_IA64_REL32LSB;
3987 break;
3988 case R_IA64_DIR64MSB:
3989 dyn_r_type = R_IA64_REL64MSB;
3990 break;
3991 case R_IA64_DIR64LSB:
3992 dyn_r_type = R_IA64_REL64LSB;
3993 break;
3994
3995 default:
3996 break;
3997 }
3998 dynindx = 0;
3999 addend = value;
4000 }
4001
4002 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4003 srel, rel->r_offset, dyn_r_type,
4004 dynindx, addend);
4005 }
4006 /* Fall through. */
4007
4008 case R_IA64_LTV32MSB:
4009 case R_IA64_LTV32LSB:
4010 case R_IA64_LTV64MSB:
4011 case R_IA64_LTV64LSB:
4012 r = ia64_elf_install_value (hit_addr, value, r_type);
4013 break;
4014
4015 case R_IA64_GPREL22:
4016 case R_IA64_GPREL64I:
4017 case R_IA64_GPREL32MSB:
4018 case R_IA64_GPREL32LSB:
4019 case R_IA64_GPREL64MSB:
4020 case R_IA64_GPREL64LSB:
4021 if (dynamic_symbol_p)
4022 {
4023 (*_bfd_error_handler)
4024 (_("%B: @gprel relocation against dynamic symbol %s"),
4025 input_bfd,
4026 h ? h->root.root.string
4027 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4028 sym_sec));
4029 ret_val = FALSE;
4030 continue;
4031 }
4032 value -= gp_val;
4033 r = ia64_elf_install_value (hit_addr, value, r_type);
4034 break;
4035
4036 case R_IA64_LTOFF22:
4037 case R_IA64_LTOFF22X:
4038 case R_IA64_LTOFF64I:
4039 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4040 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4041 rel->r_addend, value, R_IA64_DIRNNLSB);
4042 value -= gp_val;
4043 r = ia64_elf_install_value (hit_addr, value, r_type);
4044 break;
4045
4046 case R_IA64_PLTOFF22:
4047 case R_IA64_PLTOFF64I:
4048 case R_IA64_PLTOFF64MSB:
4049 case R_IA64_PLTOFF64LSB:
4050 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4051 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4052 value -= gp_val;
4053 r = ia64_elf_install_value (hit_addr, value, r_type);
4054 break;
4055
4056 case R_IA64_FPTR64I:
4057 case R_IA64_FPTR32MSB:
4058 case R_IA64_FPTR32LSB:
4059 case R_IA64_FPTR64MSB:
4060 case R_IA64_FPTR64LSB:
4061 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4062 if (dyn_i->want_fptr)
4063 {
4064 if (!undef_weak_ref)
4065 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4066 }
4067 if (!dyn_i->want_fptr || info->pie)
4068 {
4069 long dynindx;
4070 unsigned int dyn_r_type = r_type;
4071 bfd_vma addend = rel->r_addend;
4072
4073 /* Otherwise, we expect the dynamic linker to create
4074 the entry. */
4075
4076 if (dyn_i->want_fptr)
4077 {
4078 if (r_type == R_IA64_FPTR64I)
4079 {
4080 /* We can't represent this without a dynamic symbol.
4081 Adjust the relocation to be against an output
4082 section symbol, which are always present in the
4083 dynamic symbol table. */
4084 /* ??? People shouldn't be doing non-pic code in
4085 shared libraries. Hork. */
4086 (*_bfd_error_handler)
4087 (_("%B: linking non-pic code in a position independent executable"),
4088 input_bfd);
4089 ret_val = FALSE;
4090 continue;
4091 }
4092 dynindx = 0;
4093 addend = value;
4094 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4095 }
4096 else if (h)
4097 {
4098 if (h->dynindx != -1)
4099 dynindx = h->dynindx;
4100 else
4101 dynindx = (_bfd_elf_link_lookup_local_dynindx
4102 (info, h->root.u.def.section->owner,
4103 global_sym_index (h)));
4104 value = 0;
4105 }
4106 else
4107 {
4108 dynindx = (_bfd_elf_link_lookup_local_dynindx
4109 (info, input_bfd, (long) r_symndx));
4110 value = 0;
4111 }
4112
4113 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4114 srel, rel->r_offset, dyn_r_type,
4115 dynindx, addend);
4116 }
4117
4118 r = ia64_elf_install_value (hit_addr, value, r_type);
4119 break;
4120
4121 case R_IA64_LTOFF_FPTR22:
4122 case R_IA64_LTOFF_FPTR64I:
4123 case R_IA64_LTOFF_FPTR32MSB:
4124 case R_IA64_LTOFF_FPTR32LSB:
4125 case R_IA64_LTOFF_FPTR64MSB:
4126 case R_IA64_LTOFF_FPTR64LSB:
4127 {
4128 long dynindx;
4129
4130 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4131 if (dyn_i->want_fptr)
4132 {
4133 BFD_ASSERT (h == NULL || h->dynindx == -1);
4134 if (!undef_weak_ref)
4135 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4136 dynindx = -1;
4137 }
4138 else
4139 {
4140 /* Otherwise, we expect the dynamic linker to create
4141 the entry. */
4142 if (h)
4143 {
4144 if (h->dynindx != -1)
4145 dynindx = h->dynindx;
4146 else
4147 dynindx = (_bfd_elf_link_lookup_local_dynindx
4148 (info, h->root.u.def.section->owner,
4149 global_sym_index (h)));
4150 }
4151 else
4152 dynindx = (_bfd_elf_link_lookup_local_dynindx
4153 (info, input_bfd, (long) r_symndx));
4154 value = 0;
4155 }
4156
4157 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4158 rel->r_addend, value, R_IA64_FPTRNNLSB);
4159 value -= gp_val;
4160 r = ia64_elf_install_value (hit_addr, value, r_type);
4161 }
4162 break;
4163
4164 case R_IA64_PCREL32MSB:
4165 case R_IA64_PCREL32LSB:
4166 case R_IA64_PCREL64MSB:
4167 case R_IA64_PCREL64LSB:
4168 /* Install a dynamic relocation for this reloc. */
4169 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4170 {
4171 BFD_ASSERT (srel != NULL);
4172
4173 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4174 srel, rel->r_offset, r_type,
4175 h->dynindx, rel->r_addend);
4176 }
4177 goto finish_pcrel;
4178
4179 case R_IA64_PCREL21B:
4180 case R_IA64_PCREL60B:
4181 /* We should have created a PLT entry for any dynamic symbol. */
4182 dyn_i = NULL;
4183 if (h)
4184 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4185
4186 if (dyn_i && dyn_i->want_plt2)
4187 {
4188 /* Should have caught this earlier. */
4189 BFD_ASSERT (rel->r_addend == 0);
4190
4191 value = (ia64_info->root.splt->output_section->vma
4192 + ia64_info->root.splt->output_offset
4193 + dyn_i->plt2_offset);
4194 }
4195 else
4196 {
4197 /* Since there's no PLT entry, Validate that this is
4198 locally defined. */
4199 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4200
4201 /* If the symbol is undef_weak, we shouldn't be trying
4202 to call it. There's every chance that we'd wind up
4203 with an out-of-range fixup here. Don't bother setting
4204 any value at all. */
4205 if (undef_weak_ref)
4206 continue;
4207 }
4208 goto finish_pcrel;
4209
4210 case R_IA64_PCREL21BI:
4211 case R_IA64_PCREL21F:
4212 case R_IA64_PCREL21M:
4213 case R_IA64_PCREL22:
4214 case R_IA64_PCREL64I:
4215 /* The PCREL21BI reloc is specifically not intended for use with
4216 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4217 fixup code, and thus probably ought not be dynamic. The
4218 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4219 if (dynamic_symbol_p)
4220 {
4221 const char *msg;
4222
4223 if (r_type == R_IA64_PCREL21BI)
4224 msg = _("%B: @internal branch to dynamic symbol %s");
4225 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4226 msg = _("%B: speculation fixup to dynamic symbol %s");
4227 else
4228 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4229 (*_bfd_error_handler) (msg, input_bfd,
4230 h ? h->root.root.string
4231 : bfd_elf_sym_name (input_bfd,
4232 symtab_hdr,
4233 sym,
4234 sym_sec));
4235 ret_val = FALSE;
4236 continue;
4237 }
4238 goto finish_pcrel;
4239
4240 finish_pcrel:
4241 /* Make pc-relative. */
4242 value -= (input_section->output_section->vma
4243 + input_section->output_offset
4244 + rel->r_offset) & ~ (bfd_vma) 0x3;
4245 r = ia64_elf_install_value (hit_addr, value, r_type);
4246 break;
4247
4248 case R_IA64_SEGREL32MSB:
4249 case R_IA64_SEGREL32LSB:
4250 case R_IA64_SEGREL64MSB:
4251 case R_IA64_SEGREL64LSB:
4252 {
4253 /* Find the segment that contains the output_section. */
4254 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4255 (output_bfd, input_section->output_section);
4256
4257 if (p == NULL)
4258 {
4259 r = bfd_reloc_notsupported;
4260 }
4261 else
4262 {
4263 /* The VMA of the segment is the vaddr of the associated
4264 program header. */
4265 if (value > p->p_vaddr)
4266 value -= p->p_vaddr;
4267 else
4268 value = 0;
4269 r = ia64_elf_install_value (hit_addr, value, r_type);
4270 }
4271 break;
4272 }
4273
4274 case R_IA64_SECREL32MSB:
4275 case R_IA64_SECREL32LSB:
4276 case R_IA64_SECREL64MSB:
4277 case R_IA64_SECREL64LSB:
4278 /* Make output-section relative to section where the symbol
4279 is defined. PR 475 */
4280 if (sym_sec)
4281 value -= sym_sec->output_section->vma;
4282 r = ia64_elf_install_value (hit_addr, value, r_type);
4283 break;
4284
4285 case R_IA64_IPLTMSB:
4286 case R_IA64_IPLTLSB:
4287 /* Install a dynamic relocation for this reloc. */
4288 if ((dynamic_symbol_p || info->shared)
4289 && (input_section->flags & SEC_ALLOC) != 0)
4290 {
4291 BFD_ASSERT (srel != NULL);
4292
4293 /* If we don't need dynamic symbol lookup, install two
4294 RELATIVE relocations. */
4295 if (!dynamic_symbol_p)
4296 {
4297 unsigned int dyn_r_type;
4298
4299 if (r_type == R_IA64_IPLTMSB)
4300 dyn_r_type = R_IA64_REL64MSB;
4301 else
4302 dyn_r_type = R_IA64_REL64LSB;
4303
4304 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4305 input_section,
4306 srel, rel->r_offset,
4307 dyn_r_type, 0, value);
4308 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4309 input_section,
4310 srel, rel->r_offset + 8,
4311 dyn_r_type, 0, gp_val);
4312 }
4313 else
4314 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4315 srel, rel->r_offset, r_type,
4316 h->dynindx, rel->r_addend);
4317 }
4318
4319 if (r_type == R_IA64_IPLTMSB)
4320 r_type = R_IA64_DIR64MSB;
4321 else
4322 r_type = R_IA64_DIR64LSB;
4323 ia64_elf_install_value (hit_addr, value, r_type);
4324 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4325 break;
4326
4327 case R_IA64_TPREL14:
4328 case R_IA64_TPREL22:
4329 case R_IA64_TPREL64I:
4330 if (elf_hash_table (info)->tls_sec == NULL)
4331 goto missing_tls_sec;
4332 value -= elfNN_ia64_tprel_base (info);
4333 r = ia64_elf_install_value (hit_addr, value, r_type);
4334 break;
4335
4336 case R_IA64_DTPREL14:
4337 case R_IA64_DTPREL22:
4338 case R_IA64_DTPREL64I:
4339 case R_IA64_DTPREL32LSB:
4340 case R_IA64_DTPREL32MSB:
4341 case R_IA64_DTPREL64LSB:
4342 case R_IA64_DTPREL64MSB:
4343 if (elf_hash_table (info)->tls_sec == NULL)
4344 goto missing_tls_sec;
4345 value -= elfNN_ia64_dtprel_base (info);
4346 r = ia64_elf_install_value (hit_addr, value, r_type);
4347 break;
4348
4349 case R_IA64_LTOFF_TPREL22:
4350 case R_IA64_LTOFF_DTPMOD22:
4351 case R_IA64_LTOFF_DTPREL22:
4352 {
4353 int got_r_type;
4354 long dynindx = h ? h->dynindx : -1;
4355 bfd_vma r_addend = rel->r_addend;
4356
4357 switch (r_type)
4358 {
4359 default:
4360 case R_IA64_LTOFF_TPREL22:
4361 if (!dynamic_symbol_p)
4362 {
4363 if (elf_hash_table (info)->tls_sec == NULL)
4364 goto missing_tls_sec;
4365 if (!info->shared)
4366 value -= elfNN_ia64_tprel_base (info);
4367 else
4368 {
4369 r_addend += value - elfNN_ia64_dtprel_base (info);
4370 dynindx = 0;
4371 }
4372 }
4373 got_r_type = R_IA64_TPREL64LSB;
4374 break;
4375 case R_IA64_LTOFF_DTPMOD22:
4376 if (!dynamic_symbol_p && !info->shared)
4377 value = 1;
4378 got_r_type = R_IA64_DTPMOD64LSB;
4379 break;
4380 case R_IA64_LTOFF_DTPREL22:
4381 if (!dynamic_symbol_p)
4382 {
4383 if (elf_hash_table (info)->tls_sec == NULL)
4384 goto missing_tls_sec;
4385 value -= elfNN_ia64_dtprel_base (info);
4386 }
4387 got_r_type = R_IA64_DTPRELNNLSB;
4388 break;
4389 }
4390 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4391 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4392 value, got_r_type);
4393 value -= gp_val;
4394 r = ia64_elf_install_value (hit_addr, value, r_type);
4395 }
4396 break;
4397
4398 default:
4399 r = bfd_reloc_notsupported;
4400 break;
4401 }
4402
4403 switch (r)
4404 {
4405 case bfd_reloc_ok:
4406 break;
4407
4408 case bfd_reloc_undefined:
4409 /* This can happen for global table relative relocs if
4410 __gp is undefined. This is a panic situation so we
4411 don't try to continue. */
4412 (*info->callbacks->undefined_symbol)
4413 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4414 return FALSE;
4415
4416 case bfd_reloc_notsupported:
4417 {
4418 const char *name;
4419
4420 if (h)
4421 name = h->root.root.string;
4422 else
4423 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4424 sym_sec);
4425 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4426 name, input_bfd,
4427 input_section, rel->r_offset))
4428 return FALSE;
4429 ret_val = FALSE;
4430 }
4431 break;
4432
4433 case bfd_reloc_dangerous:
4434 case bfd_reloc_outofrange:
4435 case bfd_reloc_overflow:
4436 default:
4437 missing_tls_sec:
4438 {
4439 const char *name;
4440
4441 if (h)
4442 name = h->root.root.string;
4443 else
4444 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4445 sym_sec);
4446
4447 switch (r_type)
4448 {
4449 case R_IA64_TPREL14:
4450 case R_IA64_TPREL22:
4451 case R_IA64_TPREL64I:
4452 case R_IA64_DTPREL14:
4453 case R_IA64_DTPREL22:
4454 case R_IA64_DTPREL64I:
4455 case R_IA64_DTPREL32LSB:
4456 case R_IA64_DTPREL32MSB:
4457 case R_IA64_DTPREL64LSB:
4458 case R_IA64_DTPREL64MSB:
4459 case R_IA64_LTOFF_TPREL22:
4460 case R_IA64_LTOFF_DTPMOD22:
4461 case R_IA64_LTOFF_DTPREL22:
4462 (*_bfd_error_handler)
4463 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4464 input_bfd, input_section, howto->name, name,
4465 rel->r_offset);
4466 break;
4467
4468 case R_IA64_PCREL21B:
4469 case R_IA64_PCREL21BI:
4470 case R_IA64_PCREL21M:
4471 case R_IA64_PCREL21F:
4472 if (is_elf_hash_table (info->hash))
4473 {
4474 /* Relaxtion is always performed for ELF output.
4475 Overflow failures for those relocations mean
4476 that the section is too big to relax. */
4477 (*_bfd_error_handler)
4478 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4479 input_bfd, input_section, howto->name, name,
4480 rel->r_offset, input_section->size);
4481 break;
4482 }
4483 default:
4484 if (!(*info->callbacks->reloc_overflow) (info,
4485 &h->root,
4486 name,
4487 howto->name,
4488 (bfd_vma) 0,
4489 input_bfd,
4490 input_section,
4491 rel->r_offset))
4492 return FALSE;
4493 break;
4494 }
4495
4496 ret_val = FALSE;
4497 }
4498 break;
4499 }
4500 }
4501
4502 return ret_val;
4503 }
4504
4505 static bfd_boolean
4506 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4507 struct bfd_link_info *info,
4508 struct elf_link_hash_entry *h,
4509 Elf_Internal_Sym *sym)
4510 {
4511 struct elfNN_ia64_link_hash_table *ia64_info;
4512 struct elfNN_ia64_dyn_sym_info *dyn_i;
4513
4514 ia64_info = elfNN_ia64_hash_table (info);
4515 if (ia64_info == NULL)
4516 return FALSE;
4517
4518 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4519
4520 /* Fill in the PLT data, if required. */
4521 if (dyn_i && dyn_i->want_plt)
4522 {
4523 Elf_Internal_Rela outrel;
4524 bfd_byte *loc;
4525 asection *plt_sec;
4526 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4527
4528 gp_val = _bfd_get_gp_value (output_bfd);
4529
4530 /* Initialize the minimal PLT entry. */
4531
4532 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4533 plt_sec = ia64_info->root.splt;
4534 loc = plt_sec->contents + dyn_i->plt_offset;
4535
4536 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4537 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4538 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4539
4540 plt_addr = (plt_sec->output_section->vma
4541 + plt_sec->output_offset
4542 + dyn_i->plt_offset);
4543 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4544
4545 /* Initialize the FULL PLT entry, if needed. */
4546 if (dyn_i->want_plt2)
4547 {
4548 loc = plt_sec->contents + dyn_i->plt2_offset;
4549
4550 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4551 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4552
4553 /* Mark the symbol as undefined, rather than as defined in the
4554 plt section. Leave the value alone. */
4555 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4556 first place. But perhaps elflink.c did some for us. */
4557 if (!h->def_regular)
4558 sym->st_shndx = SHN_UNDEF;
4559 }
4560
4561 /* Create the dynamic relocation. */
4562 outrel.r_offset = pltoff_addr;
4563 if (bfd_little_endian (output_bfd))
4564 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4565 else
4566 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4567 outrel.r_addend = 0;
4568
4569 /* This is fun. In the .IA_64.pltoff section, we've got entries
4570 that correspond both to real PLT entries, and those that
4571 happened to resolve to local symbols but need to be created
4572 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4573 relocations for the real PLT should come at the end of the
4574 section, so that they can be indexed by plt entry at runtime.
4575
4576 We emitted all of the relocations for the non-PLT @pltoff
4577 entries during relocate_section. So we can consider the
4578 existing sec->reloc_count to be the base of the array of
4579 PLT relocations. */
4580
4581 loc = ia64_info->rel_pltoff_sec->contents;
4582 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4583 * sizeof (ElfNN_External_Rela));
4584 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4585 }
4586
4587 /* Mark some specially defined symbols as absolute. */
4588 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4589 || h == ia64_info->root.hgot
4590 || h == ia64_info->root.hplt)
4591 sym->st_shndx = SHN_ABS;
4592
4593 return TRUE;
4594 }
4595
4596 static bfd_boolean
4597 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4598 struct bfd_link_info *info)
4599 {
4600 struct elfNN_ia64_link_hash_table *ia64_info;
4601 bfd *dynobj;
4602
4603 ia64_info = elfNN_ia64_hash_table (info);
4604 if (ia64_info == NULL)
4605 return FALSE;
4606
4607 dynobj = ia64_info->root.dynobj;
4608
4609 if (elf_hash_table (info)->dynamic_sections_created)
4610 {
4611 ElfNN_External_Dyn *dyncon, *dynconend;
4612 asection *sdyn, *sgotplt;
4613 bfd_vma gp_val;
4614
4615 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4616 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4617 BFD_ASSERT (sdyn != NULL);
4618 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4619 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4620
4621 gp_val = _bfd_get_gp_value (abfd);
4622
4623 for (; dyncon < dynconend; dyncon++)
4624 {
4625 Elf_Internal_Dyn dyn;
4626
4627 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4628
4629 switch (dyn.d_tag)
4630 {
4631 case DT_PLTGOT:
4632 dyn.d_un.d_ptr = gp_val;
4633 break;
4634
4635 case DT_PLTRELSZ:
4636 dyn.d_un.d_val = (ia64_info->minplt_entries
4637 * sizeof (ElfNN_External_Rela));
4638 break;
4639
4640 case DT_JMPREL:
4641 /* See the comment above in finish_dynamic_symbol. */
4642 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4643 + ia64_info->rel_pltoff_sec->output_offset
4644 + (ia64_info->rel_pltoff_sec->reloc_count
4645 * sizeof (ElfNN_External_Rela)));
4646 break;
4647
4648 case DT_IA_64_PLT_RESERVE:
4649 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4650 + sgotplt->output_offset);
4651 break;
4652
4653 case DT_RELASZ:
4654 /* Do not have RELASZ include JMPREL. This makes things
4655 easier on ld.so. This is not what the rest of BFD set up. */
4656 dyn.d_un.d_val -= (ia64_info->minplt_entries
4657 * sizeof (ElfNN_External_Rela));
4658 break;
4659 }
4660
4661 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4662 }
4663
4664 /* Initialize the PLT0 entry. */
4665 if (ia64_info->root.splt)
4666 {
4667 bfd_byte *loc = ia64_info->root.splt->contents;
4668 bfd_vma pltres;
4669
4670 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4671
4672 pltres = (sgotplt->output_section->vma
4673 + sgotplt->output_offset
4674 - gp_val);
4675
4676 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4677 }
4678 }
4679
4680 return TRUE;
4681 }
4682 \f
4683 /* ELF file flag handling: */
4684
4685 /* Function to keep IA-64 specific file flags. */
4686 static bfd_boolean
4687 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4688 {
4689 BFD_ASSERT (!elf_flags_init (abfd)
4690 || elf_elfheader (abfd)->e_flags == flags);
4691
4692 elf_elfheader (abfd)->e_flags = flags;
4693 elf_flags_init (abfd) = TRUE;
4694 return TRUE;
4695 }
4696
4697 /* Merge backend specific data from an object file to the output
4698 object file when linking. */
4699 static bfd_boolean
4700 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4701 {
4702 flagword out_flags;
4703 flagword in_flags;
4704 bfd_boolean ok = TRUE;
4705
4706 /* Don't even pretend to support mixed-format linking. */
4707 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4708 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4709 return FALSE;
4710
4711 in_flags = elf_elfheader (ibfd)->e_flags;
4712 out_flags = elf_elfheader (obfd)->e_flags;
4713
4714 if (! elf_flags_init (obfd))
4715 {
4716 elf_flags_init (obfd) = TRUE;
4717 elf_elfheader (obfd)->e_flags = in_flags;
4718
4719 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4720 && bfd_get_arch_info (obfd)->the_default)
4721 {
4722 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4723 bfd_get_mach (ibfd));
4724 }
4725
4726 return TRUE;
4727 }
4728
4729 /* Check flag compatibility. */
4730 if (in_flags == out_flags)
4731 return TRUE;
4732
4733 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4734 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4735 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4736
4737 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4738 {
4739 (*_bfd_error_handler)
4740 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4741 ibfd);
4742
4743 bfd_set_error (bfd_error_bad_value);
4744 ok = FALSE;
4745 }
4746 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4747 {
4748 (*_bfd_error_handler)
4749 (_("%B: linking big-endian files with little-endian files"),
4750 ibfd);
4751
4752 bfd_set_error (bfd_error_bad_value);
4753 ok = FALSE;
4754 }
4755 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4756 {
4757 (*_bfd_error_handler)
4758 (_("%B: linking 64-bit files with 32-bit files"),
4759 ibfd);
4760
4761 bfd_set_error (bfd_error_bad_value);
4762 ok = FALSE;
4763 }
4764 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4765 {
4766 (*_bfd_error_handler)
4767 (_("%B: linking constant-gp files with non-constant-gp files"),
4768 ibfd);
4769
4770 bfd_set_error (bfd_error_bad_value);
4771 ok = FALSE;
4772 }
4773 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4774 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4775 {
4776 (*_bfd_error_handler)
4777 (_("%B: linking auto-pic files with non-auto-pic files"),
4778 ibfd);
4779
4780 bfd_set_error (bfd_error_bad_value);
4781 ok = FALSE;
4782 }
4783
4784 return ok;
4785 }
4786
4787 static bfd_boolean
4788 elfNN_ia64_print_private_bfd_data (bfd *abfd, PTR ptr)
4789 {
4790 FILE *file = (FILE *) ptr;
4791 flagword flags = elf_elfheader (abfd)->e_flags;
4792
4793 BFD_ASSERT (abfd != NULL && ptr != NULL);
4794
4795 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4796 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4797 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4798 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4799 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4800 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4801 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4802 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4803 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4804
4805 _bfd_elf_print_private_bfd_data (abfd, ptr);
4806 return TRUE;
4807 }
4808
4809 static enum elf_reloc_type_class
4810 elfNN_ia64_reloc_type_class (const Elf_Internal_Rela *rela)
4811 {
4812 switch ((int) ELFNN_R_TYPE (rela->r_info))
4813 {
4814 case R_IA64_REL32MSB:
4815 case R_IA64_REL32LSB:
4816 case R_IA64_REL64MSB:
4817 case R_IA64_REL64LSB:
4818 return reloc_class_relative;
4819 case R_IA64_IPLTMSB:
4820 case R_IA64_IPLTLSB:
4821 return reloc_class_plt;
4822 case R_IA64_COPY:
4823 return reloc_class_copy;
4824 default:
4825 return reloc_class_normal;
4826 }
4827 }
4828
4829 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4830 {
4831 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4832 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4833 { NULL, 0, 0, 0, 0 }
4834 };
4835
4836 static bfd_boolean
4837 elfNN_ia64_object_p (bfd *abfd)
4838 {
4839 asection *sec;
4840 asection *group, *unwi, *unw;
4841 flagword flags;
4842 const char *name;
4843 char *unwi_name, *unw_name;
4844 bfd_size_type amt;
4845
4846 if (abfd->flags & DYNAMIC)
4847 return TRUE;
4848
4849 /* Flags for fake group section. */
4850 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4851 | SEC_EXCLUDE);
4852
4853 /* We add a fake section group for each .gnu.linkonce.t.* section,
4854 which isn't in a section group, and its unwind sections. */
4855 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4856 {
4857 if (elf_sec_group (sec) == NULL
4858 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4859 == (SEC_LINK_ONCE | SEC_CODE))
4860 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4861 {
4862 name = sec->name + 16;
4863
4864 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4865 unwi_name = bfd_alloc (abfd, amt);
4866 if (!unwi_name)
4867 return FALSE;
4868
4869 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4870 unwi = bfd_get_section_by_name (abfd, unwi_name);
4871
4872 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4873 unw_name = bfd_alloc (abfd, amt);
4874 if (!unw_name)
4875 return FALSE;
4876
4877 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4878 unw = bfd_get_section_by_name (abfd, unw_name);
4879
4880 /* We need to create a fake group section for it and its
4881 unwind sections. */
4882 group = bfd_make_section_anyway_with_flags (abfd, name,
4883 flags);
4884 if (group == NULL)
4885 return FALSE;
4886
4887 /* Move the fake group section to the beginning. */
4888 bfd_section_list_remove (abfd, group);
4889 bfd_section_list_prepend (abfd, group);
4890
4891 elf_next_in_group (group) = sec;
4892
4893 elf_group_name (sec) = name;
4894 elf_next_in_group (sec) = sec;
4895 elf_sec_group (sec) = group;
4896
4897 if (unwi)
4898 {
4899 elf_group_name (unwi) = name;
4900 elf_next_in_group (unwi) = sec;
4901 elf_next_in_group (sec) = unwi;
4902 elf_sec_group (unwi) = group;
4903 }
4904
4905 if (unw)
4906 {
4907 elf_group_name (unw) = name;
4908 if (unwi)
4909 {
4910 elf_next_in_group (unw) = elf_next_in_group (unwi);
4911 elf_next_in_group (unwi) = unw;
4912 }
4913 else
4914 {
4915 elf_next_in_group (unw) = sec;
4916 elf_next_in_group (sec) = unw;
4917 }
4918 elf_sec_group (unw) = group;
4919 }
4920
4921 /* Fake SHT_GROUP section header. */
4922 elf_section_data (group)->this_hdr.bfd_section = group;
4923 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4924 }
4925 }
4926 return TRUE;
4927 }
4928
4929 static bfd_boolean
4930 elfNN_ia64_hpux_vec (const bfd_target *vec)
4931 {
4932 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4933 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4934 }
4935
4936 static void
4937 elfNN_hpux_post_process_headers (bfd *abfd,
4938 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4939 {
4940 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4941
4942 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4943 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4944 }
4945
4946 static bfd_boolean
4947 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4948 asection *sec, int *retval)
4949 {
4950 if (bfd_is_com_section (sec))
4951 {
4952 *retval = SHN_IA_64_ANSI_COMMON;
4953 return TRUE;
4954 }
4955 return FALSE;
4956 }
4957
4958 static void
4959 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4960 asymbol *asym)
4961 {
4962 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4963
4964 switch (elfsym->internal_elf_sym.st_shndx)
4965 {
4966 case SHN_IA_64_ANSI_COMMON:
4967 asym->section = bfd_com_section_ptr;
4968 asym->value = elfsym->internal_elf_sym.st_size;
4969 asym->flags &= ~BSF_GLOBAL;
4970 break;
4971 }
4972 }
4973 \f
4974 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4975 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4976 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4977 #define TARGET_BIG_NAME "elfNN-ia64-big"
4978 #define ELF_ARCH bfd_arch_ia64
4979 #define ELF_TARGET_ID IA64_ELF_DATA
4980 #define ELF_MACHINE_CODE EM_IA_64
4981 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4982 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4983 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4984 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4985
4986 #define elf_backend_section_from_shdr \
4987 elfNN_ia64_section_from_shdr
4988 #define elf_backend_section_flags \
4989 elfNN_ia64_section_flags
4990 #define elf_backend_fake_sections \
4991 elfNN_ia64_fake_sections
4992 #define elf_backend_final_write_processing \
4993 elfNN_ia64_final_write_processing
4994 #define elf_backend_add_symbol_hook \
4995 elfNN_ia64_add_symbol_hook
4996 #define elf_backend_additional_program_headers \
4997 elfNN_ia64_additional_program_headers
4998 #define elf_backend_modify_segment_map \
4999 elfNN_ia64_modify_segment_map
5000 #define elf_backend_modify_program_headers \
5001 elfNN_ia64_modify_program_headers
5002 #define elf_info_to_howto \
5003 elfNN_ia64_info_to_howto
5004
5005 #define bfd_elfNN_bfd_reloc_type_lookup \
5006 ia64_elf_reloc_type_lookup
5007 #define bfd_elfNN_bfd_reloc_name_lookup \
5008 ia64_elf_reloc_name_lookup
5009 #define bfd_elfNN_bfd_is_local_label_name \
5010 elfNN_ia64_is_local_label_name
5011 #define bfd_elfNN_bfd_relax_section \
5012 elfNN_ia64_relax_section
5013
5014 #define elf_backend_object_p \
5015 elfNN_ia64_object_p
5016
5017 /* Stuff for the BFD linker: */
5018 #define bfd_elfNN_bfd_link_hash_table_create \
5019 elfNN_ia64_hash_table_create
5020 #define bfd_elfNN_bfd_link_hash_table_free \
5021 elfNN_ia64_hash_table_free
5022 #define elf_backend_create_dynamic_sections \
5023 elfNN_ia64_create_dynamic_sections
5024 #define elf_backend_check_relocs \
5025 elfNN_ia64_check_relocs
5026 #define elf_backend_adjust_dynamic_symbol \
5027 elfNN_ia64_adjust_dynamic_symbol
5028 #define elf_backend_size_dynamic_sections \
5029 elfNN_ia64_size_dynamic_sections
5030 #define elf_backend_omit_section_dynsym \
5031 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5032 #define elf_backend_relocate_section \
5033 elfNN_ia64_relocate_section
5034 #define elf_backend_finish_dynamic_symbol \
5035 elfNN_ia64_finish_dynamic_symbol
5036 #define elf_backend_finish_dynamic_sections \
5037 elfNN_ia64_finish_dynamic_sections
5038 #define bfd_elfNN_bfd_final_link \
5039 elfNN_ia64_final_link
5040
5041 #define bfd_elfNN_bfd_merge_private_bfd_data \
5042 elfNN_ia64_merge_private_bfd_data
5043 #define bfd_elfNN_bfd_set_private_flags \
5044 elfNN_ia64_set_private_flags
5045 #define bfd_elfNN_bfd_print_private_bfd_data \
5046 elfNN_ia64_print_private_bfd_data
5047
5048 #define elf_backend_plt_readonly 1
5049 #define elf_backend_want_plt_sym 0
5050 #define elf_backend_plt_alignment 5
5051 #define elf_backend_got_header_size 0
5052 #define elf_backend_want_got_plt 1
5053 #define elf_backend_may_use_rel_p 1
5054 #define elf_backend_may_use_rela_p 1
5055 #define elf_backend_default_use_rela_p 1
5056 #define elf_backend_want_dynbss 0
5057 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5058 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5059 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5060 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5061 #define elf_backend_rela_normal 1
5062 #define elf_backend_special_sections elfNN_ia64_special_sections
5063 #define elf_backend_default_execstack 0
5064
5065 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5066 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5067 We don't want to flood users with so many error messages. We turn
5068 off the warning for now. It will be turned on later when the Intel
5069 compiler is fixed. */
5070 #define elf_backend_link_order_error_handler NULL
5071
5072 #include "elfNN-target.h"
5073
5074 /* HPUX-specific vectors. */
5075
5076 #undef TARGET_LITTLE_SYM
5077 #undef TARGET_LITTLE_NAME
5078 #undef TARGET_BIG_SYM
5079 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5080 #undef TARGET_BIG_NAME
5081 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5082
5083 /* These are HP-UX specific functions. */
5084
5085 #undef elf_backend_post_process_headers
5086 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5087
5088 #undef elf_backend_section_from_bfd_section
5089 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5090
5091 #undef elf_backend_symbol_processing
5092 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5093
5094 #undef elf_backend_want_p_paddr_set_to_zero
5095 #define elf_backend_want_p_paddr_set_to_zero 1
5096
5097 #undef ELF_COMMONPAGESIZE
5098 #undef ELF_OSABI
5099 #define ELF_OSABI ELFOSABI_HPUX
5100
5101 #undef elfNN_bed
5102 #define elfNN_bed elfNN_ia64_hpux_bed
5103
5104 #include "elfNN-target.h"
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