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[binutils-gdb.git] / bfd / elfnn-ia64.c
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1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2017 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "opcode/ia64.h"
27 #include "elf/ia64.h"
28 #include "objalloc.h"
29 #include "hashtab.h"
30 #include "bfd_stdint.h"
31 #include "elfxx-ia64.h"
33 #define ARCH_SIZE NN
35 #if ARCH_SIZE == 64
36 #define LOG_SECTION_ALIGN 3
37 #endif
39 #if ARCH_SIZE == 32
40 #define LOG_SECTION_ALIGN 2
41 #endif
43 typedef struct bfd_hash_entry *(*new_hash_entry_func)
44 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
46 /* In dynamically (linker-) created sections, we generally need to keep track
47 of the place a symbol or expression got allocated to. This is done via hash
48 tables that store entries of the following type. */
50 struct elfNN_ia64_dyn_sym_info
52 /* The addend for which this entry is relevant. */
53 bfd_vma addend;
55 bfd_vma got_offset;
56 bfd_vma fptr_offset;
57 bfd_vma pltoff_offset;
58 bfd_vma plt_offset;
59 bfd_vma plt2_offset;
60 bfd_vma tprel_offset;
61 bfd_vma dtpmod_offset;
62 bfd_vma dtprel_offset;
64 /* The symbol table entry, if any, that this was derived from. */
65 struct elf_link_hash_entry *h;
67 /* Used to count non-got, non-plt relocations for delayed sizing
68 of relocation sections. */
69 struct elfNN_ia64_dyn_reloc_entry
71 struct elfNN_ia64_dyn_reloc_entry *next;
72 asection *srel;
73 int type;
74 int count;
76 /* Is this reloc against readonly section? */
77 bfd_boolean reltext;
78 } *reloc_entries;
80 /* TRUE when the section contents have been updated. */
81 unsigned got_done : 1;
82 unsigned fptr_done : 1;
83 unsigned pltoff_done : 1;
84 unsigned tprel_done : 1;
85 unsigned dtpmod_done : 1;
86 unsigned dtprel_done : 1;
88 /* TRUE for the different kinds of linker data we want created. */
89 unsigned want_got : 1;
90 unsigned want_gotx : 1;
91 unsigned want_fptr : 1;
92 unsigned want_ltoff_fptr : 1;
93 unsigned want_plt : 1;
94 unsigned want_plt2 : 1;
95 unsigned want_pltoff : 1;
96 unsigned want_tprel : 1;
97 unsigned want_dtpmod : 1;
98 unsigned want_dtprel : 1;
101 struct elfNN_ia64_local_hash_entry
103 int id;
104 unsigned int r_sym;
105 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
106 unsigned int count;
107 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
108 unsigned int sorted_count;
109 /* The size of elfNN_ia64_dyn_sym_info array. */
110 unsigned int size;
111 /* The array of elfNN_ia64_dyn_sym_info. */
112 struct elfNN_ia64_dyn_sym_info *info;
114 /* TRUE if this hash entry's addends was translated for
115 SHF_MERGE optimization. */
116 unsigned sec_merge_done : 1;
119 struct elfNN_ia64_link_hash_entry
121 struct elf_link_hash_entry root;
122 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
123 unsigned int count;
124 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
125 unsigned int sorted_count;
126 /* The size of elfNN_ia64_dyn_sym_info array. */
127 unsigned int size;
128 /* The array of elfNN_ia64_dyn_sym_info. */
129 struct elfNN_ia64_dyn_sym_info *info;
132 struct elfNN_ia64_link_hash_table
134 /* The main hash table. */
135 struct elf_link_hash_table root;
137 asection *fptr_sec; /* Function descriptor table (or NULL). */
138 asection *rel_fptr_sec; /* Dynamic relocation section for same. */
139 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
140 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
142 bfd_size_type minplt_entries; /* Number of minplt entries. */
143 unsigned reltext : 1; /* Are there relocs against readonly sections? */
144 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
145 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
146 /* There are maybe R_IA64_GPREL22 relocations, including those
147 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
148 sections. We need to record those sections so that we can choose
149 a proper GP to cover all R_IA64_GPREL22 relocations. */
150 asection *max_short_sec; /* Maximum short output section. */
151 bfd_vma max_short_offset; /* Maximum short offset. */
152 asection *min_short_sec; /* Minimum short output section. */
153 bfd_vma min_short_offset; /* Minimum short offset. */
155 htab_t loc_hash_table;
156 void *loc_hash_memory;
159 struct elfNN_ia64_allocate_data
161 struct bfd_link_info *info;
162 bfd_size_type ofs;
163 bfd_boolean only_got;
166 #define elfNN_ia64_hash_table(p) \
167 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
168 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
170 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
171 (struct elfNN_ia64_link_hash_table *ia64_info,
172 struct elf_link_hash_entry *h,
173 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
174 static bfd_boolean elfNN_ia64_dynamic_symbol_p
175 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
176 static bfd_boolean elfNN_ia64_choose_gp
177 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
178 static void elfNN_ia64_dyn_sym_traverse
179 (struct elfNN_ia64_link_hash_table *ia64_info,
180 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
181 void * info);
182 static bfd_boolean allocate_global_data_got
183 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
184 static bfd_boolean allocate_global_fptr_got
185 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
186 static bfd_boolean allocate_local_got
187 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
188 static bfd_boolean elfNN_ia64_hpux_vec
189 (const bfd_target *vec);
190 static bfd_boolean allocate_dynrel_entries
191 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
192 static asection *get_pltoff
193 (bfd *abfd, struct bfd_link_info *info,
194 struct elfNN_ia64_link_hash_table *ia64_info);
196 /* ia64-specific relocation. */
198 /* Given a ELF reloc, return the matching HOWTO structure. */
200 static void
201 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
202 arelent *bfd_reloc,
203 Elf_Internal_Rela *elf_reloc)
205 bfd_reloc->howto
206 = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
209 #define PLT_HEADER_SIZE (3 * 16)
210 #define PLT_MIN_ENTRY_SIZE (1 * 16)
211 #define PLT_FULL_ENTRY_SIZE (2 * 16)
212 #define PLT_RESERVED_WORDS 3
214 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
216 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
217 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
218 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
219 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
220 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
221 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
222 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
223 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
224 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
227 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
229 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
230 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
231 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
234 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
236 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
237 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
238 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
239 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
240 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
241 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
244 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
246 static const bfd_byte oor_brl[16] =
248 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
250 0x00, 0x00, 0x00, 0xc0
253 static const bfd_byte oor_ip[48] =
255 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
256 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
257 0x01, 0x00, 0x00, 0x60,
258 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
259 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
260 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
261 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
262 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
263 0x60, 0x00, 0x80, 0x00 /* br b6;; */
266 static size_t oor_branch_size = sizeof (oor_brl);
268 void
269 bfd_elfNN_ia64_after_parse (int itanium)
271 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
275 /* Rename some of the generic section flags to better document how they
276 are used here. */
277 #define skip_relax_pass_0 sec_flg0
278 #define skip_relax_pass_1 sec_flg1
280 /* These functions do relaxation for IA-64 ELF. */
282 static void
283 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
284 struct elfNN_ia64_link_hash_table *ia64_info)
286 /* Skip ABS and SHF_IA_64_SHORT sections. */
287 if (sec == bfd_abs_section_ptr
288 || (sec->flags & SEC_SMALL_DATA) != 0)
289 return;
291 if (!ia64_info->min_short_sec)
293 ia64_info->max_short_sec = sec;
294 ia64_info->max_short_offset = offset;
295 ia64_info->min_short_sec = sec;
296 ia64_info->min_short_offset = offset;
298 else if (sec == ia64_info->max_short_sec
299 && offset > ia64_info->max_short_offset)
300 ia64_info->max_short_offset = offset;
301 else if (sec == ia64_info->min_short_sec
302 && offset < ia64_info->min_short_offset)
303 ia64_info->min_short_offset = offset;
304 else if (sec->output_section->vma
305 > ia64_info->max_short_sec->vma)
307 ia64_info->max_short_sec = sec;
308 ia64_info->max_short_offset = offset;
310 else if (sec->output_section->vma
311 < ia64_info->min_short_sec->vma)
313 ia64_info->min_short_sec = sec;
314 ia64_info->min_short_offset = offset;
318 static bfd_boolean
319 elfNN_ia64_relax_section (bfd *abfd, asection *sec,
320 struct bfd_link_info *link_info,
321 bfd_boolean *again)
323 struct one_fixup
325 struct one_fixup *next;
326 asection *tsec;
327 bfd_vma toff;
328 bfd_vma trampoff;
331 Elf_Internal_Shdr *symtab_hdr;
332 Elf_Internal_Rela *internal_relocs;
333 Elf_Internal_Rela *irel, *irelend;
334 bfd_byte *contents;
335 Elf_Internal_Sym *isymbuf = NULL;
336 struct elfNN_ia64_link_hash_table *ia64_info;
337 struct one_fixup *fixups = NULL;
338 bfd_boolean changed_contents = FALSE;
339 bfd_boolean changed_relocs = FALSE;
340 bfd_boolean changed_got = FALSE;
341 bfd_boolean skip_relax_pass_0 = TRUE;
342 bfd_boolean skip_relax_pass_1 = TRUE;
343 bfd_vma gp = 0;
345 /* Assume we're not going to change any sizes, and we'll only need
346 one pass. */
347 *again = FALSE;
349 if (bfd_link_relocatable (link_info))
350 (*link_info->callbacks->einfo)
351 (_("%P%F: --relax and -r may not be used together\n"));
353 /* Don't even try to relax for non-ELF outputs. */
354 if (!is_elf_hash_table (link_info->hash))
355 return FALSE;
357 /* Nothing to do if there are no relocations or there is no need for
358 the current pass. */
359 if ((sec->flags & SEC_RELOC) == 0
360 || sec->reloc_count == 0
361 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
362 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
363 return TRUE;
365 ia64_info = elfNN_ia64_hash_table (link_info);
366 if (ia64_info == NULL)
367 return FALSE;
369 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
371 /* Load the relocations for this section. */
372 internal_relocs = (_bfd_elf_link_read_relocs
373 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
374 link_info->keep_memory));
375 if (internal_relocs == NULL)
376 return FALSE;
378 irelend = internal_relocs + sec->reloc_count;
380 /* Get the section contents. */
381 if (elf_section_data (sec)->this_hdr.contents != NULL)
382 contents = elf_section_data (sec)->this_hdr.contents;
383 else
385 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
386 goto error_return;
389 for (irel = internal_relocs; irel < irelend; irel++)
391 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
392 bfd_vma symaddr, reladdr, trampoff, toff, roff;
393 asection *tsec;
394 struct one_fixup *f;
395 bfd_size_type amt;
396 bfd_boolean is_branch;
397 struct elfNN_ia64_dyn_sym_info *dyn_i;
398 char symtype;
400 switch (r_type)
402 case R_IA64_PCREL21B:
403 case R_IA64_PCREL21BI:
404 case R_IA64_PCREL21M:
405 case R_IA64_PCREL21F:
406 /* In pass 1, all br relaxations are done. We can skip it. */
407 if (link_info->relax_pass == 1)
408 continue;
409 skip_relax_pass_0 = FALSE;
410 is_branch = TRUE;
411 break;
413 case R_IA64_PCREL60B:
414 /* We can't optimize brl to br in pass 0 since br relaxations
415 will increase the code size. Defer it to pass 1. */
416 if (link_info->relax_pass == 0)
418 skip_relax_pass_1 = FALSE;
419 continue;
421 is_branch = TRUE;
422 break;
424 case R_IA64_GPREL22:
425 /* Update max_short_sec/min_short_sec. */
427 case R_IA64_LTOFF22X:
428 case R_IA64_LDXMOV:
429 /* We can't relax ldx/mov in pass 0 since br relaxations will
430 increase the code size. Defer it to pass 1. */
431 if (link_info->relax_pass == 0)
433 skip_relax_pass_1 = FALSE;
434 continue;
436 is_branch = FALSE;
437 break;
439 default:
440 continue;
443 /* Get the value of the symbol referred to by the reloc. */
444 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
446 /* A local symbol. */
447 Elf_Internal_Sym *isym;
449 /* Read this BFD's local symbols. */
450 if (isymbuf == NULL)
452 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
453 if (isymbuf == NULL)
454 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
455 symtab_hdr->sh_info, 0,
456 NULL, NULL, NULL);
457 if (isymbuf == 0)
458 goto error_return;
461 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
462 if (isym->st_shndx == SHN_UNDEF)
463 continue; /* We can't do anything with undefined symbols. */
464 else if (isym->st_shndx == SHN_ABS)
465 tsec = bfd_abs_section_ptr;
466 else if (isym->st_shndx == SHN_COMMON)
467 tsec = bfd_com_section_ptr;
468 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
469 tsec = bfd_com_section_ptr;
470 else
471 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
473 toff = isym->st_value;
474 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
475 symtype = ELF_ST_TYPE (isym->st_info);
477 else
479 unsigned long indx;
480 struct elf_link_hash_entry *h;
482 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
483 h = elf_sym_hashes (abfd)[indx];
484 BFD_ASSERT (h != NULL);
486 while (h->root.type == bfd_link_hash_indirect
487 || h->root.type == bfd_link_hash_warning)
488 h = (struct elf_link_hash_entry *) h->root.u.i.link;
490 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
492 /* For branches to dynamic symbols, we're interested instead
493 in a branch to the PLT entry. */
494 if (is_branch && dyn_i && dyn_i->want_plt2)
496 /* Internal branches shouldn't be sent to the PLT.
497 Leave this for now and we'll give an error later. */
498 if (r_type != R_IA64_PCREL21B)
499 continue;
501 tsec = ia64_info->root.splt;
502 toff = dyn_i->plt2_offset;
503 BFD_ASSERT (irel->r_addend == 0);
506 /* Can't do anything else with dynamic symbols. */
507 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
508 continue;
510 else
512 /* We can't do anything with undefined symbols. */
513 if (h->root.type == bfd_link_hash_undefined
514 || h->root.type == bfd_link_hash_undefweak)
515 continue;
517 tsec = h->root.u.def.section;
518 toff = h->root.u.def.value;
521 symtype = h->type;
524 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
526 /* At this stage in linking, no SEC_MERGE symbol has been
527 adjusted, so all references to such symbols need to be
528 passed through _bfd_merged_section_offset. (Later, in
529 relocate_section, all SEC_MERGE symbols *except* for
530 section symbols have been adjusted.)
532 gas may reduce relocations against symbols in SEC_MERGE
533 sections to a relocation against the section symbol when
534 the original addend was zero. When the reloc is against
535 a section symbol we should include the addend in the
536 offset passed to _bfd_merged_section_offset, since the
537 location of interest is the original symbol. On the
538 other hand, an access to "sym+addend" where "sym" is not
539 a section symbol should not include the addend; Such an
540 access is presumed to be an offset from "sym"; The
541 location of interest is just "sym". */
542 if (symtype == STT_SECTION)
543 toff += irel->r_addend;
545 toff = _bfd_merged_section_offset (abfd, &tsec,
546 elf_section_data (tsec)->sec_info,
547 toff);
549 if (symtype != STT_SECTION)
550 toff += irel->r_addend;
552 else
553 toff += irel->r_addend;
555 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
557 roff = irel->r_offset;
559 if (is_branch)
561 bfd_signed_vma offset;
563 reladdr = (sec->output_section->vma
564 + sec->output_offset
565 + roff) & (bfd_vma) -4;
567 /* The .plt section is aligned at 32byte and the .text section
568 is aligned at 64byte. The .text section is right after the
569 .plt section. After the first relaxation pass, linker may
570 increase the gap between the .plt and .text sections up
571 to 32byte. We assume linker will always insert 32byte
572 between the .plt and .text sections after the first
573 relaxation pass. */
574 if (tsec == ia64_info->root.splt)
575 offset = -0x1000000 + 32;
576 else
577 offset = -0x1000000;
579 /* If the branch is in range, no need to do anything. */
580 if ((bfd_signed_vma) (symaddr - reladdr) >= offset
581 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
583 /* If the 60-bit branch is in 21-bit range, optimize it. */
584 if (r_type == R_IA64_PCREL60B)
586 ia64_elf_relax_brl (contents, roff);
588 irel->r_info
589 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
590 R_IA64_PCREL21B);
592 /* If the original relocation offset points to slot
593 1, change it to slot 2. */
594 if ((irel->r_offset & 3) == 1)
595 irel->r_offset += 1;
598 continue;
600 else if (r_type == R_IA64_PCREL60B)
601 continue;
602 else if (ia64_elf_relax_br (contents, roff))
604 irel->r_info
605 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
606 R_IA64_PCREL60B);
608 /* Make the relocation offset point to slot 1. */
609 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
610 continue;
613 /* We can't put a trampoline in a .init/.fini section. Issue
614 an error. */
615 if (strcmp (sec->output_section->name, ".init") == 0
616 || strcmp (sec->output_section->name, ".fini") == 0)
618 _bfd_error_handler
619 /* xgettext:c-format */
620 (_("%B: Can't relax br at %#Lx in section `%A'."
621 " Please use brl or indirect branch."),
622 sec->owner, roff, sec);
623 bfd_set_error (bfd_error_bad_value);
624 goto error_return;
627 /* If the branch and target are in the same section, you've
628 got one honking big section and we can't help you unless
629 you are branching backwards. You'll get an error message
630 later. */
631 if (tsec == sec && toff > roff)
632 continue;
634 /* Look for an existing fixup to this address. */
635 for (f = fixups; f ; f = f->next)
636 if (f->tsec == tsec && f->toff == toff)
637 break;
639 if (f == NULL)
641 /* Two alternatives: If it's a branch to a PLT entry, we can
642 make a copy of the FULL_PLT entry. Otherwise, we'll have
643 to use a `brl' insn to get where we're going. */
645 size_t size;
647 if (tsec == ia64_info->root.splt)
648 size = sizeof (plt_full_entry);
649 else
650 size = oor_branch_size;
652 /* Resize the current section to make room for the new branch. */
653 trampoff = (sec->size + 15) & (bfd_vma) -16;
655 /* If trampoline is out of range, there is nothing we
656 can do. */
657 offset = trampoff - (roff & (bfd_vma) -4);
658 if (offset < -0x1000000 || offset > 0x0FFFFF0)
659 continue;
661 amt = trampoff + size;
662 contents = (bfd_byte *) bfd_realloc (contents, amt);
663 if (contents == NULL)
664 goto error_return;
665 sec->size = amt;
667 if (tsec == ia64_info->root.splt)
669 memcpy (contents + trampoff, plt_full_entry, size);
671 /* Hijack the old relocation for use as the PLTOFF reloc. */
672 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
673 R_IA64_PLTOFF22);
674 irel->r_offset = trampoff;
676 else
678 if (size == sizeof (oor_ip))
680 memcpy (contents + trampoff, oor_ip, size);
681 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
682 R_IA64_PCREL64I);
683 irel->r_addend -= 16;
684 irel->r_offset = trampoff + 2;
686 else
688 memcpy (contents + trampoff, oor_brl, size);
689 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
690 R_IA64_PCREL60B);
691 irel->r_offset = trampoff + 2;
696 /* Record the fixup so we don't do it again this section. */
697 f = (struct one_fixup *)
698 bfd_malloc ((bfd_size_type) sizeof (*f));
699 f->next = fixups;
700 f->tsec = tsec;
701 f->toff = toff;
702 f->trampoff = trampoff;
703 fixups = f;
705 else
707 /* If trampoline is out of range, there is nothing we
708 can do. */
709 offset = f->trampoff - (roff & (bfd_vma) -4);
710 if (offset < -0x1000000 || offset > 0x0FFFFF0)
711 continue;
713 /* Nop out the reloc, since we're finalizing things here. */
714 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
717 /* Fix up the existing branch to hit the trampoline. */
718 if (ia64_elf_install_value (contents + roff, offset, r_type)
719 != bfd_reloc_ok)
720 goto error_return;
722 changed_contents = TRUE;
723 changed_relocs = TRUE;
725 else
727 /* Fetch the gp. */
728 if (gp == 0)
730 bfd *obfd = sec->output_section->owner;
731 gp = _bfd_get_gp_value (obfd);
732 if (gp == 0)
734 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
735 goto error_return;
736 gp = _bfd_get_gp_value (obfd);
740 /* If the data is out of range, do nothing. */
741 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
742 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
743 continue;
745 if (r_type == R_IA64_GPREL22)
746 elfNN_ia64_update_short_info (tsec->output_section,
747 tsec->output_offset + toff,
748 ia64_info);
749 else if (r_type == R_IA64_LTOFF22X)
751 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
752 R_IA64_GPREL22);
753 changed_relocs = TRUE;
754 if (dyn_i->want_gotx)
756 dyn_i->want_gotx = 0;
757 changed_got |= !dyn_i->want_got;
760 elfNN_ia64_update_short_info (tsec->output_section,
761 tsec->output_offset + toff,
762 ia64_info);
764 else
766 ia64_elf_relax_ldxmov (contents, roff);
767 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
768 changed_contents = TRUE;
769 changed_relocs = TRUE;
774 /* ??? If we created fixups, this may push the code segment large
775 enough that the data segment moves, which will change the GP.
776 Reset the GP so that we re-calculate next round. We need to
777 do this at the _beginning_ of the next round; now will not do. */
779 /* Clean up and go home. */
780 while (fixups)
782 struct one_fixup *f = fixups;
783 fixups = fixups->next;
784 free (f);
787 if (isymbuf != NULL
788 && symtab_hdr->contents != (unsigned char *) isymbuf)
790 if (! link_info->keep_memory)
791 free (isymbuf);
792 else
794 /* Cache the symbols for elf_link_input_bfd. */
795 symtab_hdr->contents = (unsigned char *) isymbuf;
799 if (contents != NULL
800 && elf_section_data (sec)->this_hdr.contents != contents)
802 if (!changed_contents && !link_info->keep_memory)
803 free (contents);
804 else
806 /* Cache the section contents for elf_link_input_bfd. */
807 elf_section_data (sec)->this_hdr.contents = contents;
811 if (elf_section_data (sec)->relocs != internal_relocs)
813 if (!changed_relocs)
814 free (internal_relocs);
815 else
816 elf_section_data (sec)->relocs = internal_relocs;
819 if (changed_got)
821 struct elfNN_ia64_allocate_data data;
822 data.info = link_info;
823 data.ofs = 0;
824 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
826 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
827 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
828 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
829 ia64_info->root.sgot->size = data.ofs;
831 if (ia64_info->root.dynamic_sections_created
832 && ia64_info->root.srelgot != NULL)
834 /* Resize .rela.got. */
835 ia64_info->root.srelgot->size = 0;
836 if (bfd_link_pic (link_info)
837 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
838 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
839 data.only_got = TRUE;
840 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
841 &data);
845 if (link_info->relax_pass == 0)
847 /* Pass 0 is only needed to relax br. */
848 sec->skip_relax_pass_0 = skip_relax_pass_0;
849 sec->skip_relax_pass_1 = skip_relax_pass_1;
852 *again = changed_contents || changed_relocs;
853 return TRUE;
855 error_return:
856 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
857 free (isymbuf);
858 if (contents != NULL
859 && elf_section_data (sec)->this_hdr.contents != contents)
860 free (contents);
861 if (internal_relocs != NULL
862 && elf_section_data (sec)->relocs != internal_relocs)
863 free (internal_relocs);
864 return FALSE;
866 #undef skip_relax_pass_0
867 #undef skip_relax_pass_1
869 /* Return TRUE if NAME is an unwind table section name. */
871 static inline bfd_boolean
872 is_unwind_section_name (bfd *abfd, const char *name)
874 if (elfNN_ia64_hpux_vec (abfd->xvec)
875 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
876 return FALSE;
878 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
879 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
880 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
883 /* Handle an IA-64 specific section when reading an object file. This
884 is called when bfd_section_from_shdr finds a section with an unknown
885 type. */
887 static bfd_boolean
888 elfNN_ia64_section_from_shdr (bfd *abfd,
889 Elf_Internal_Shdr *hdr,
890 const char *name,
891 int shindex)
893 /* There ought to be a place to keep ELF backend specific flags, but
894 at the moment there isn't one. We just keep track of the
895 sections by their name, instead. Fortunately, the ABI gives
896 suggested names for all the MIPS specific sections, so we will
897 probably get away with this. */
898 switch (hdr->sh_type)
900 case SHT_IA_64_UNWIND:
901 case SHT_IA_64_HP_OPT_ANOT:
902 break;
904 case SHT_IA_64_EXT:
905 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
906 return FALSE;
907 break;
909 default:
910 return FALSE;
913 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
914 return FALSE;
916 return TRUE;
919 /* Convert IA-64 specific section flags to bfd internal section flags. */
921 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
922 flag. */
924 static bfd_boolean
925 elfNN_ia64_section_flags (flagword *flags,
926 const Elf_Internal_Shdr *hdr)
928 if (hdr->sh_flags & SHF_IA_64_SHORT)
929 *flags |= SEC_SMALL_DATA;
931 return TRUE;
934 /* Set the correct type for an IA-64 ELF section. We do this by the
935 section name, which is a hack, but ought to work. */
937 static bfd_boolean
938 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
939 asection *sec)
941 const char *name;
943 name = bfd_get_section_name (abfd, sec);
945 if (is_unwind_section_name (abfd, name))
947 /* We don't have the sections numbered at this point, so sh_info
948 is set later, in elfNN_ia64_final_write_processing. */
949 hdr->sh_type = SHT_IA_64_UNWIND;
950 hdr->sh_flags |= SHF_LINK_ORDER;
952 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
953 hdr->sh_type = SHT_IA_64_EXT;
954 else if (strcmp (name, ".HP.opt_annot") == 0)
955 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
956 else if (strcmp (name, ".reloc") == 0)
957 /* This is an ugly, but unfortunately necessary hack that is
958 needed when producing EFI binaries on IA-64. It tells
959 elf.c:elf_fake_sections() not to consider ".reloc" as a section
960 containing ELF relocation info. We need this hack in order to
961 be able to generate ELF binaries that can be translated into
962 EFI applications (which are essentially COFF objects). Those
963 files contain a COFF ".reloc" section inside an ELFNN object,
964 which would normally cause BFD to segfault because it would
965 attempt to interpret this section as containing relocation
966 entries for section "oc". With this hack enabled, ".reloc"
967 will be treated as a normal data section, which will avoid the
968 segfault. However, you won't be able to create an ELFNN binary
969 with a section named "oc" that needs relocations, but that's
970 the kind of ugly side-effects you get when detecting section
971 types based on their names... In practice, this limitation is
972 unlikely to bite. */
973 hdr->sh_type = SHT_PROGBITS;
975 if (sec->flags & SEC_SMALL_DATA)
976 hdr->sh_flags |= SHF_IA_64_SHORT;
978 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
980 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
981 hdr->sh_flags |= SHF_IA_64_HP_TLS;
983 return TRUE;
986 /* The final processing done just before writing out an IA-64 ELF
987 object file. */
989 static void
990 elfNN_ia64_final_write_processing (bfd *abfd,
991 bfd_boolean linker ATTRIBUTE_UNUSED)
993 Elf_Internal_Shdr *hdr;
994 asection *s;
996 for (s = abfd->sections; s; s = s->next)
998 hdr = &elf_section_data (s)->this_hdr;
999 switch (hdr->sh_type)
1001 case SHT_IA_64_UNWIND:
1002 /* The IA-64 processor-specific ABI requires setting sh_link
1003 to the unwind section, whereas HP-UX requires sh_info to
1004 do so. For maximum compatibility, we'll set both for
1005 now... */
1006 hdr->sh_info = hdr->sh_link;
1007 break;
1011 if (! elf_flags_init (abfd))
1013 unsigned long flags = 0;
1015 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1016 flags |= EF_IA_64_BE;
1017 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1018 flags |= EF_IA_64_ABI64;
1020 elf_elfheader(abfd)->e_flags = flags;
1021 elf_flags_init (abfd) = TRUE;
1025 /* Hook called by the linker routine which adds symbols from an object
1026 file. We use it to put .comm items in .sbss, and not .bss. */
1028 static bfd_boolean
1029 elfNN_ia64_add_symbol_hook (bfd *abfd,
1030 struct bfd_link_info *info,
1031 Elf_Internal_Sym *sym,
1032 const char **namep ATTRIBUTE_UNUSED,
1033 flagword *flagsp ATTRIBUTE_UNUSED,
1034 asection **secp,
1035 bfd_vma *valp)
1037 if (sym->st_shndx == SHN_COMMON
1038 && !bfd_link_relocatable (info)
1039 && sym->st_size <= elf_gp_size (abfd))
1041 /* Common symbols less than or equal to -G nn bytes are
1042 automatically put into .sbss. */
1044 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1046 if (scomm == NULL)
1048 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1049 (SEC_ALLOC
1050 | SEC_IS_COMMON
1051 | SEC_LINKER_CREATED));
1052 if (scomm == NULL)
1053 return FALSE;
1056 *secp = scomm;
1057 *valp = sym->st_size;
1060 return TRUE;
1063 /* Return the number of additional phdrs we will need. */
1065 static int
1066 elfNN_ia64_additional_program_headers (bfd *abfd,
1067 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1069 asection *s;
1070 int ret = 0;
1072 /* See if we need a PT_IA_64_ARCHEXT segment. */
1073 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1074 if (s && (s->flags & SEC_LOAD))
1075 ++ret;
1077 /* Count how many PT_IA_64_UNWIND segments we need. */
1078 for (s = abfd->sections; s; s = s->next)
1079 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1080 ++ret;
1082 return ret;
1085 static bfd_boolean
1086 elfNN_ia64_modify_segment_map (bfd *abfd,
1087 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1089 struct elf_segment_map *m, **pm;
1090 Elf_Internal_Shdr *hdr;
1091 asection *s;
1093 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1094 all PT_LOAD segments. */
1095 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1096 if (s && (s->flags & SEC_LOAD))
1098 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1099 if (m->p_type == PT_IA_64_ARCHEXT)
1100 break;
1101 if (m == NULL)
1103 m = ((struct elf_segment_map *)
1104 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1105 if (m == NULL)
1106 return FALSE;
1108 m->p_type = PT_IA_64_ARCHEXT;
1109 m->count = 1;
1110 m->sections[0] = s;
1112 /* We want to put it after the PHDR and INTERP segments. */
1113 pm = &elf_seg_map (abfd);
1114 while (*pm != NULL
1115 && ((*pm)->p_type == PT_PHDR
1116 || (*pm)->p_type == PT_INTERP))
1117 pm = &(*pm)->next;
1119 m->next = *pm;
1120 *pm = m;
1124 /* Install PT_IA_64_UNWIND segments, if needed. */
1125 for (s = abfd->sections; s; s = s->next)
1127 hdr = &elf_section_data (s)->this_hdr;
1128 if (hdr->sh_type != SHT_IA_64_UNWIND)
1129 continue;
1131 if (s && (s->flags & SEC_LOAD))
1133 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1134 if (m->p_type == PT_IA_64_UNWIND)
1136 int i;
1138 /* Look through all sections in the unwind segment
1139 for a match since there may be multiple sections
1140 to a segment. */
1141 for (i = m->count - 1; i >= 0; --i)
1142 if (m->sections[i] == s)
1143 break;
1145 if (i >= 0)
1146 break;
1149 if (m == NULL)
1151 m = ((struct elf_segment_map *)
1152 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1153 if (m == NULL)
1154 return FALSE;
1156 m->p_type = PT_IA_64_UNWIND;
1157 m->count = 1;
1158 m->sections[0] = s;
1159 m->next = NULL;
1161 /* We want to put it last. */
1162 pm = &elf_seg_map (abfd);
1163 while (*pm != NULL)
1164 pm = &(*pm)->next;
1165 *pm = m;
1170 return TRUE;
1173 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1174 the input sections for each output section in the segment and testing
1175 for SHF_IA_64_NORECOV on each. */
1177 static bfd_boolean
1178 elfNN_ia64_modify_program_headers (bfd *abfd,
1179 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1181 struct elf_obj_tdata *tdata = elf_tdata (abfd);
1182 struct elf_segment_map *m;
1183 Elf_Internal_Phdr *p;
1185 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1186 if (m->p_type == PT_LOAD)
1188 int i;
1189 for (i = m->count - 1; i >= 0; --i)
1191 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1193 while (order != NULL)
1195 if (order->type == bfd_indirect_link_order)
1197 asection *is = order->u.indirect.section;
1198 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1199 if (flags & SHF_IA_64_NORECOV)
1201 p->p_flags |= PF_IA_64_NORECOV;
1202 goto found;
1205 order = order->next;
1208 found:;
1211 return TRUE;
1214 /* According to the Tahoe assembler spec, all labels starting with a
1215 '.' are local. */
1217 static bfd_boolean
1218 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1219 const char *name)
1221 return name[0] == '.';
1224 /* Should we do dynamic things to this symbol? */
1226 static bfd_boolean
1227 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1228 struct bfd_link_info *info, int r_type)
1230 bfd_boolean ignore_protected
1231 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1232 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1234 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1237 static struct bfd_hash_entry*
1238 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1239 struct bfd_hash_table *table,
1240 const char *string)
1242 struct elfNN_ia64_link_hash_entry *ret;
1243 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1245 /* Allocate the structure if it has not already been allocated by a
1246 subclass. */
1247 if (!ret)
1248 ret = bfd_hash_allocate (table, sizeof (*ret));
1250 if (!ret)
1251 return 0;
1253 /* Call the allocation method of the superclass. */
1254 ret = ((struct elfNN_ia64_link_hash_entry *)
1255 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1256 table, string));
1258 ret->info = NULL;
1259 ret->count = 0;
1260 ret->sorted_count = 0;
1261 ret->size = 0;
1262 return (struct bfd_hash_entry *) ret;
1265 static void
1266 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1267 struct elf_link_hash_entry *xdir,
1268 struct elf_link_hash_entry *xind)
1270 struct elfNN_ia64_link_hash_entry *dir, *ind;
1272 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1273 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1275 /* Copy down any references that we may have already seen to the
1276 symbol which just became indirect. */
1278 if (dir->root.versioned != versioned_hidden)
1279 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1280 dir->root.ref_regular |= ind->root.ref_regular;
1281 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1282 dir->root.needs_plt |= ind->root.needs_plt;
1284 if (ind->root.root.type != bfd_link_hash_indirect)
1285 return;
1287 /* Copy over the got and plt data. This would have been done
1288 by check_relocs. */
1290 if (ind->info != NULL)
1292 struct elfNN_ia64_dyn_sym_info *dyn_i;
1293 unsigned int count;
1295 if (dir->info)
1296 free (dir->info);
1298 dir->info = ind->info;
1299 dir->count = ind->count;
1300 dir->sorted_count = ind->sorted_count;
1301 dir->size = ind->size;
1303 ind->info = NULL;
1304 ind->count = 0;
1305 ind->sorted_count = 0;
1306 ind->size = 0;
1308 /* Fix up the dyn_sym_info pointers to the global symbol. */
1309 for (count = dir->count, dyn_i = dir->info;
1310 count != 0;
1311 count--, dyn_i++)
1312 dyn_i->h = &dir->root;
1315 /* Copy over the dynindx. */
1317 if (ind->root.dynindx != -1)
1319 if (dir->root.dynindx != -1)
1320 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1321 dir->root.dynstr_index);
1322 dir->root.dynindx = ind->root.dynindx;
1323 dir->root.dynstr_index = ind->root.dynstr_index;
1324 ind->root.dynindx = -1;
1325 ind->root.dynstr_index = 0;
1329 static void
1330 elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1331 struct elf_link_hash_entry *xh,
1332 bfd_boolean force_local)
1334 struct elfNN_ia64_link_hash_entry *h;
1335 struct elfNN_ia64_dyn_sym_info *dyn_i;
1336 unsigned int count;
1338 h = (struct elfNN_ia64_link_hash_entry *)xh;
1340 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1342 for (count = h->count, dyn_i = h->info;
1343 count != 0;
1344 count--, dyn_i++)
1346 dyn_i->want_plt2 = 0;
1347 dyn_i->want_plt = 0;
1351 /* Compute a hash of a local hash entry. */
1353 static hashval_t
1354 elfNN_ia64_local_htab_hash (const void *ptr)
1356 struct elfNN_ia64_local_hash_entry *entry
1357 = (struct elfNN_ia64_local_hash_entry *) ptr;
1359 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1362 /* Compare local hash entries. */
1364 static int
1365 elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1367 struct elfNN_ia64_local_hash_entry *entry1
1368 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1369 struct elfNN_ia64_local_hash_entry *entry2
1370 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1372 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1375 /* Free the global elfNN_ia64_dyn_sym_info array. */
1377 static bfd_boolean
1378 elfNN_ia64_global_dyn_info_free (void **xentry,
1379 void * unused ATTRIBUTE_UNUSED)
1381 struct elfNN_ia64_link_hash_entry *entry
1382 = (struct elfNN_ia64_link_hash_entry *) xentry;
1384 if (entry->info)
1386 free (entry->info);
1387 entry->info = NULL;
1388 entry->count = 0;
1389 entry->sorted_count = 0;
1390 entry->size = 0;
1393 return TRUE;
1396 /* Free the local elfNN_ia64_dyn_sym_info array. */
1398 static bfd_boolean
1399 elfNN_ia64_local_dyn_info_free (void **slot,
1400 void * unused ATTRIBUTE_UNUSED)
1402 struct elfNN_ia64_local_hash_entry *entry
1403 = (struct elfNN_ia64_local_hash_entry *) *slot;
1405 if (entry->info)
1407 free (entry->info);
1408 entry->info = NULL;
1409 entry->count = 0;
1410 entry->sorted_count = 0;
1411 entry->size = 0;
1414 return TRUE;
1417 /* Destroy IA-64 linker hash table. */
1419 static void
1420 elfNN_ia64_link_hash_table_free (bfd *obfd)
1422 struct elfNN_ia64_link_hash_table *ia64_info
1423 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
1424 if (ia64_info->loc_hash_table)
1426 htab_traverse (ia64_info->loc_hash_table,
1427 elfNN_ia64_local_dyn_info_free, NULL);
1428 htab_delete (ia64_info->loc_hash_table);
1430 if (ia64_info->loc_hash_memory)
1431 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1432 elf_link_hash_traverse (&ia64_info->root,
1433 elfNN_ia64_global_dyn_info_free, NULL);
1434 _bfd_elf_link_hash_table_free (obfd);
1437 /* Create the derived linker hash table. The IA-64 ELF port uses this
1438 derived hash table to keep information specific to the IA-64 ElF
1439 linker (without using static variables). */
1441 static struct bfd_link_hash_table *
1442 elfNN_ia64_hash_table_create (bfd *abfd)
1444 struct elfNN_ia64_link_hash_table *ret;
1446 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1447 if (!ret)
1448 return NULL;
1450 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1451 elfNN_ia64_new_elf_hash_entry,
1452 sizeof (struct elfNN_ia64_link_hash_entry),
1453 IA64_ELF_DATA))
1455 free (ret);
1456 return NULL;
1459 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1460 elfNN_ia64_local_htab_eq, NULL);
1461 ret->loc_hash_memory = objalloc_create ();
1462 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1464 elfNN_ia64_link_hash_table_free (abfd);
1465 return NULL;
1467 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
1469 return &ret->root.root;
1472 /* Traverse both local and global hash tables. */
1474 struct elfNN_ia64_dyn_sym_traverse_data
1476 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1477 void * data;
1480 static bfd_boolean
1481 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1482 void * xdata)
1484 struct elfNN_ia64_link_hash_entry *entry
1485 = (struct elfNN_ia64_link_hash_entry *) xentry;
1486 struct elfNN_ia64_dyn_sym_traverse_data *data
1487 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1488 struct elfNN_ia64_dyn_sym_info *dyn_i;
1489 unsigned int count;
1491 for (count = entry->count, dyn_i = entry->info;
1492 count != 0;
1493 count--, dyn_i++)
1494 if (! (*data->func) (dyn_i, data->data))
1495 return FALSE;
1496 return TRUE;
1499 static bfd_boolean
1500 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1502 struct elfNN_ia64_local_hash_entry *entry
1503 = (struct elfNN_ia64_local_hash_entry *) *slot;
1504 struct elfNN_ia64_dyn_sym_traverse_data *data
1505 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1506 struct elfNN_ia64_dyn_sym_info *dyn_i;
1507 unsigned int count;
1509 for (count = entry->count, dyn_i = entry->info;
1510 count != 0;
1511 count--, dyn_i++)
1512 if (! (*data->func) (dyn_i, data->data))
1513 return FALSE;
1514 return TRUE;
1517 static void
1518 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1519 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1520 void * data)
1522 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1524 xdata.func = func;
1525 xdata.data = data;
1527 elf_link_hash_traverse (&ia64_info->root,
1528 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1529 htab_traverse (ia64_info->loc_hash_table,
1530 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1533 static bfd_boolean
1534 elfNN_ia64_create_dynamic_sections (bfd *abfd,
1535 struct bfd_link_info *info)
1537 struct elfNN_ia64_link_hash_table *ia64_info;
1538 asection *s;
1540 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1541 return FALSE;
1543 ia64_info = elfNN_ia64_hash_table (info);
1544 if (ia64_info == NULL)
1545 return FALSE;
1548 flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1549 bfd_set_section_flags (abfd, ia64_info->root.sgot,
1550 SEC_SMALL_DATA | flags);
1551 /* The .got section is always aligned at 8 bytes. */
1552 if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3))
1553 return FALSE;
1556 if (!get_pltoff (abfd, info, ia64_info))
1557 return FALSE;
1559 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1560 (SEC_ALLOC | SEC_LOAD
1561 | SEC_HAS_CONTENTS
1562 | SEC_IN_MEMORY
1563 | SEC_LINKER_CREATED
1564 | SEC_READONLY));
1565 if (s == NULL
1566 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
1567 return FALSE;
1568 ia64_info->rel_pltoff_sec = s;
1570 return TRUE;
1573 /* Find and/or create a hash entry for local symbol. */
1574 static struct elfNN_ia64_local_hash_entry *
1575 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1576 bfd *abfd, const Elf_Internal_Rela *rel,
1577 bfd_boolean create)
1579 struct elfNN_ia64_local_hash_entry e, *ret;
1580 asection *sec = abfd->sections;
1581 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1582 ELFNN_R_SYM (rel->r_info));
1583 void **slot;
1585 e.id = sec->id;
1586 e.r_sym = ELFNN_R_SYM (rel->r_info);
1587 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1588 create ? INSERT : NO_INSERT);
1590 if (!slot)
1591 return NULL;
1593 if (*slot)
1594 return (struct elfNN_ia64_local_hash_entry *) *slot;
1596 ret = (struct elfNN_ia64_local_hash_entry *)
1597 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1598 sizeof (struct elfNN_ia64_local_hash_entry));
1599 if (ret)
1601 memset (ret, 0, sizeof (*ret));
1602 ret->id = sec->id;
1603 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1604 *slot = ret;
1606 return ret;
1609 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1611 static int
1612 addend_compare (const void *xp, const void *yp)
1614 const struct elfNN_ia64_dyn_sym_info *x
1615 = (const struct elfNN_ia64_dyn_sym_info *) xp;
1616 const struct elfNN_ia64_dyn_sym_info *y
1617 = (const struct elfNN_ia64_dyn_sym_info *) yp;
1619 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1622 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1624 static unsigned int
1625 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1626 unsigned int count)
1628 bfd_vma curr, prev, got_offset;
1629 unsigned int i, kept, dupes, diff, dest, src, len;
1631 qsort (info, count, sizeof (*info), addend_compare);
1633 /* Find the first duplicate. */
1634 prev = info [0].addend;
1635 got_offset = info [0].got_offset;
1636 for (i = 1; i < count; i++)
1638 curr = info [i].addend;
1639 if (curr == prev)
1641 /* For duplicates, make sure that GOT_OFFSET is valid. */
1642 if (got_offset == (bfd_vma) -1)
1643 got_offset = info [i].got_offset;
1644 break;
1646 got_offset = info [i].got_offset;
1647 prev = curr;
1650 /* We may move a block of elements to here. */
1651 dest = i++;
1653 /* Remove duplicates. */
1654 if (i < count)
1656 while (i < count)
1658 /* For duplicates, make sure that the kept one has a valid
1659 got_offset. */
1660 kept = dest - 1;
1661 if (got_offset != (bfd_vma) -1)
1662 info [kept].got_offset = got_offset;
1664 curr = info [i].addend;
1665 got_offset = info [i].got_offset;
1667 /* Move a block of elements whose first one is different from
1668 the previous. */
1669 if (curr == prev)
1671 for (src = i + 1; src < count; src++)
1673 if (info [src].addend != curr)
1674 break;
1675 /* For duplicates, make sure that GOT_OFFSET is
1676 valid. */
1677 if (got_offset == (bfd_vma) -1)
1678 got_offset = info [src].got_offset;
1681 /* Make sure that the kept one has a valid got_offset. */
1682 if (got_offset != (bfd_vma) -1)
1683 info [kept].got_offset = got_offset;
1685 else
1686 src = i;
1688 if (src >= count)
1689 break;
1691 /* Find the next duplicate. SRC will be kept. */
1692 prev = info [src].addend;
1693 got_offset = info [src].got_offset;
1694 for (dupes = src + 1; dupes < count; dupes ++)
1696 curr = info [dupes].addend;
1697 if (curr == prev)
1699 /* Make sure that got_offset is valid. */
1700 if (got_offset == (bfd_vma) -1)
1701 got_offset = info [dupes].got_offset;
1703 /* For duplicates, make sure that the kept one has
1704 a valid got_offset. */
1705 if (got_offset != (bfd_vma) -1)
1706 info [dupes - 1].got_offset = got_offset;
1707 break;
1709 got_offset = info [dupes].got_offset;
1710 prev = curr;
1713 /* How much to move. */
1714 len = dupes - src;
1715 i = dupes + 1;
1717 if (len == 1 && dupes < count)
1719 /* If we only move 1 element, we combine it with the next
1720 one. There must be at least a duplicate. Find the
1721 next different one. */
1722 for (diff = dupes + 1, src++; diff < count; diff++, src++)
1724 if (info [diff].addend != curr)
1725 break;
1726 /* Make sure that got_offset is valid. */
1727 if (got_offset == (bfd_vma) -1)
1728 got_offset = info [diff].got_offset;
1731 /* Makre sure that the last duplicated one has an valid
1732 offset. */
1733 BFD_ASSERT (curr == prev);
1734 if (got_offset != (bfd_vma) -1)
1735 info [diff - 1].got_offset = got_offset;
1737 if (diff < count)
1739 /* Find the next duplicate. Track the current valid
1740 offset. */
1741 prev = info [diff].addend;
1742 got_offset = info [diff].got_offset;
1743 for (dupes = diff + 1; dupes < count; dupes ++)
1745 curr = info [dupes].addend;
1746 if (curr == prev)
1748 /* For duplicates, make sure that GOT_OFFSET
1749 is valid. */
1750 if (got_offset == (bfd_vma) -1)
1751 got_offset = info [dupes].got_offset;
1752 break;
1754 got_offset = info [dupes].got_offset;
1755 prev = curr;
1756 diff++;
1759 len = diff - src + 1;
1760 i = diff + 1;
1764 memmove (&info [dest], &info [src], len * sizeof (*info));
1766 dest += len;
1769 count = dest;
1771 else
1773 /* When we get here, either there is no duplicate at all or
1774 the only duplicate is the last element. */
1775 if (dest < count)
1777 /* If the last element is a duplicate, make sure that the
1778 kept one has a valid got_offset. We also update count. */
1779 if (got_offset != (bfd_vma) -1)
1780 info [dest - 1].got_offset = got_offset;
1781 count = dest;
1785 return count;
1788 /* Find and/or create a descriptor for dynamic symbol info. This will
1789 vary based on global or local symbol, and the addend to the reloc.
1791 We don't sort when inserting. Also, we sort and eliminate
1792 duplicates if there is an unsorted section. Typically, this will
1793 only happen once, because we do all insertions before lookups. We
1794 then use bsearch to do a lookup. This also allows lookups to be
1795 fast. So we have fast insertion (O(log N) due to duplicate check),
1796 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1797 Previously, all lookups were O(N) because of the use of the linked
1798 list and also all insertions were O(N) because of the check for
1799 duplicates. There are some complications here because the array
1800 size grows occasionally, which may add an O(N) factor, but this
1801 should be rare. Also, we free the excess array allocation, which
1802 requires a copy which is O(N), but this only happens once. */
1804 static struct elfNN_ia64_dyn_sym_info *
1805 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1806 struct elf_link_hash_entry *h, bfd *abfd,
1807 const Elf_Internal_Rela *rel, bfd_boolean create)
1809 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1810 unsigned int *count_p, *sorted_count_p, *size_p;
1811 unsigned int count, sorted_count, size;
1812 bfd_vma addend = rel ? rel->r_addend : 0;
1813 bfd_size_type amt;
1815 if (h)
1817 struct elfNN_ia64_link_hash_entry *global_h;
1819 global_h = (struct elfNN_ia64_link_hash_entry *) h;
1820 info_p = &global_h->info;
1821 count_p = &global_h->count;
1822 sorted_count_p = &global_h->sorted_count;
1823 size_p = &global_h->size;
1825 else
1827 struct elfNN_ia64_local_hash_entry *loc_h;
1829 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1830 if (!loc_h)
1832 BFD_ASSERT (!create);
1833 return NULL;
1836 info_p = &loc_h->info;
1837 count_p = &loc_h->count;
1838 sorted_count_p = &loc_h->sorted_count;
1839 size_p = &loc_h->size;
1842 count = *count_p;
1843 sorted_count = *sorted_count_p;
1844 size = *size_p;
1845 info = *info_p;
1846 if (create)
1848 /* When we create the array, we don't check for duplicates,
1849 except in the previously sorted section if one exists, and
1850 against the last inserted entry. This allows insertions to
1851 be fast. */
1852 if (info)
1854 if (sorted_count)
1856 /* Try bsearch first on the sorted section. */
1857 key.addend = addend;
1858 dyn_i = bsearch (&key, info, sorted_count,
1859 sizeof (*info), addend_compare);
1861 if (dyn_i)
1863 return dyn_i;
1867 /* Do a quick check for the last inserted entry. */
1868 dyn_i = info + count - 1;
1869 if (dyn_i->addend == addend)
1871 return dyn_i;
1875 if (size == 0)
1877 /* It is the very first element. We create the array of size
1878 1. */
1879 size = 1;
1880 amt = size * sizeof (*info);
1881 info = bfd_malloc (amt);
1883 else if (size <= count)
1885 /* We double the array size every time when we reach the
1886 size limit. */
1887 size += size;
1888 amt = size * sizeof (*info);
1889 info = bfd_realloc (info, amt);
1891 else
1892 goto has_space;
1894 if (info == NULL)
1895 return NULL;
1896 *size_p = size;
1897 *info_p = info;
1899 has_space:
1900 /* Append the new one to the array. */
1901 dyn_i = info + count;
1902 memset (dyn_i, 0, sizeof (*dyn_i));
1903 dyn_i->got_offset = (bfd_vma) -1;
1904 dyn_i->addend = addend;
1906 /* We increment count only since the new ones are unsorted and
1907 may have duplicate. */
1908 (*count_p)++;
1910 else
1912 /* It is a lookup without insertion. Sort array if part of the
1913 array isn't sorted. */
1914 if (count != sorted_count)
1916 count = sort_dyn_sym_info (info, count);
1917 *count_p = count;
1918 *sorted_count_p = count;
1921 /* Free unused memory. */
1922 if (size != count)
1924 amt = count * sizeof (*info);
1925 info = bfd_malloc (amt);
1926 if (info != NULL)
1928 memcpy (info, *info_p, amt);
1929 free (*info_p);
1930 *size_p = count;
1931 *info_p = info;
1935 key.addend = addend;
1936 dyn_i = bsearch (&key, info, count,
1937 sizeof (*info), addend_compare);
1940 return dyn_i;
1943 static asection *
1944 get_got (bfd *abfd, struct bfd_link_info *info,
1945 struct elfNN_ia64_link_hash_table *ia64_info)
1947 asection *got;
1948 bfd *dynobj;
1950 got = ia64_info->root.sgot;
1951 if (!got)
1953 flagword flags;
1955 dynobj = ia64_info->root.dynobj;
1956 if (!dynobj)
1957 ia64_info->root.dynobj = dynobj = abfd;
1958 if (!_bfd_elf_create_got_section (dynobj, info))
1959 return NULL;
1961 got = ia64_info->root.sgot;
1963 /* The .got section is always aligned at 8 bytes. */
1964 if (!bfd_set_section_alignment (abfd, got, 3))
1965 return NULL;
1967 flags = bfd_get_section_flags (abfd, got);
1968 if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags))
1969 return NULL;
1972 return got;
1975 /* Create function descriptor section (.opd). This section is called .opd
1976 because it contains "official procedure descriptors". The "official"
1977 refers to the fact that these descriptors are used when taking the address
1978 of a procedure, thus ensuring a unique address for each procedure. */
1980 static asection *
1981 get_fptr (bfd *abfd, struct bfd_link_info *info,
1982 struct elfNN_ia64_link_hash_table *ia64_info)
1984 asection *fptr;
1985 bfd *dynobj;
1987 fptr = ia64_info->fptr_sec;
1988 if (!fptr)
1990 dynobj = ia64_info->root.dynobj;
1991 if (!dynobj)
1992 ia64_info->root.dynobj = dynobj = abfd;
1994 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
1995 (SEC_ALLOC
1996 | SEC_LOAD
1997 | SEC_HAS_CONTENTS
1998 | SEC_IN_MEMORY
1999 | (bfd_link_pie (info)
2000 ? 0 : SEC_READONLY)
2001 | SEC_LINKER_CREATED));
2002 if (!fptr
2003 || !bfd_set_section_alignment (abfd, fptr, 4))
2005 BFD_ASSERT (0);
2006 return NULL;
2009 ia64_info->fptr_sec = fptr;
2011 if (bfd_link_pie (info))
2013 asection *fptr_rel;
2014 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2015 (SEC_ALLOC | SEC_LOAD
2016 | SEC_HAS_CONTENTS
2017 | SEC_IN_MEMORY
2018 | SEC_LINKER_CREATED
2019 | SEC_READONLY));
2020 if (fptr_rel == NULL
2021 || !bfd_set_section_alignment (abfd, fptr_rel,
2022 LOG_SECTION_ALIGN))
2024 BFD_ASSERT (0);
2025 return NULL;
2028 ia64_info->rel_fptr_sec = fptr_rel;
2032 return fptr;
2035 static asection *
2036 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2037 struct elfNN_ia64_link_hash_table *ia64_info)
2039 asection *pltoff;
2040 bfd *dynobj;
2042 pltoff = ia64_info->pltoff_sec;
2043 if (!pltoff)
2045 dynobj = ia64_info->root.dynobj;
2046 if (!dynobj)
2047 ia64_info->root.dynobj = dynobj = abfd;
2049 pltoff = bfd_make_section_anyway_with_flags (dynobj,
2050 ELF_STRING_ia64_pltoff,
2051 (SEC_ALLOC
2052 | SEC_LOAD
2053 | SEC_HAS_CONTENTS
2054 | SEC_IN_MEMORY
2055 | SEC_SMALL_DATA
2056 | SEC_LINKER_CREATED));
2057 if (!pltoff
2058 || !bfd_set_section_alignment (abfd, pltoff, 4))
2060 BFD_ASSERT (0);
2061 return NULL;
2064 ia64_info->pltoff_sec = pltoff;
2067 return pltoff;
2070 static asection *
2071 get_reloc_section (bfd *abfd,
2072 struct elfNN_ia64_link_hash_table *ia64_info,
2073 asection *sec, bfd_boolean create)
2075 const char *srel_name;
2076 asection *srel;
2077 bfd *dynobj;
2079 srel_name = (bfd_elf_string_from_elf_section
2080 (abfd, elf_elfheader(abfd)->e_shstrndx,
2081 _bfd_elf_single_rel_hdr (sec)->sh_name));
2082 if (srel_name == NULL)
2083 return NULL;
2085 dynobj = ia64_info->root.dynobj;
2086 if (!dynobj)
2087 ia64_info->root.dynobj = dynobj = abfd;
2089 srel = bfd_get_linker_section (dynobj, srel_name);
2090 if (srel == NULL && create)
2092 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2093 (SEC_ALLOC | SEC_LOAD
2094 | SEC_HAS_CONTENTS
2095 | SEC_IN_MEMORY
2096 | SEC_LINKER_CREATED
2097 | SEC_READONLY));
2098 if (srel == NULL
2099 || !bfd_set_section_alignment (dynobj, srel,
2100 LOG_SECTION_ALIGN))
2101 return NULL;
2104 return srel;
2107 static bfd_boolean
2108 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2109 asection *srel, int type, bfd_boolean reltext)
2111 struct elfNN_ia64_dyn_reloc_entry *rent;
2113 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2114 if (rent->srel == srel && rent->type == type)
2115 break;
2117 if (!rent)
2119 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2120 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2121 if (!rent)
2122 return FALSE;
2124 rent->next = dyn_i->reloc_entries;
2125 rent->srel = srel;
2126 rent->type = type;
2127 rent->count = 0;
2128 dyn_i->reloc_entries = rent;
2130 rent->reltext = reltext;
2131 rent->count++;
2133 return TRUE;
2136 static bfd_boolean
2137 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2138 asection *sec,
2139 const Elf_Internal_Rela *relocs)
2141 struct elfNN_ia64_link_hash_table *ia64_info;
2142 const Elf_Internal_Rela *relend;
2143 Elf_Internal_Shdr *symtab_hdr;
2144 const Elf_Internal_Rela *rel;
2145 asection *got, *fptr, *srel, *pltoff;
2146 enum {
2147 NEED_GOT = 1,
2148 NEED_GOTX = 2,
2149 NEED_FPTR = 4,
2150 NEED_PLTOFF = 8,
2151 NEED_MIN_PLT = 16,
2152 NEED_FULL_PLT = 32,
2153 NEED_DYNREL = 64,
2154 NEED_LTOFF_FPTR = 128,
2155 NEED_TPREL = 256,
2156 NEED_DTPMOD = 512,
2157 NEED_DTPREL = 1024
2159 int need_entry;
2160 struct elf_link_hash_entry *h;
2161 unsigned long r_symndx;
2162 bfd_boolean maybe_dynamic;
2164 if (bfd_link_relocatable (info))
2165 return TRUE;
2167 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2168 ia64_info = elfNN_ia64_hash_table (info);
2169 if (ia64_info == NULL)
2170 return FALSE;
2172 got = fptr = srel = pltoff = NULL;
2174 relend = relocs + sec->reloc_count;
2176 /* We scan relocations first to create dynamic relocation arrays. We
2177 modified get_dyn_sym_info to allow fast insertion and support fast
2178 lookup in the next loop. */
2179 for (rel = relocs; rel < relend; ++rel)
2181 r_symndx = ELFNN_R_SYM (rel->r_info);
2182 if (r_symndx >= symtab_hdr->sh_info)
2184 long indx = r_symndx - symtab_hdr->sh_info;
2185 h = elf_sym_hashes (abfd)[indx];
2186 while (h->root.type == bfd_link_hash_indirect
2187 || h->root.type == bfd_link_hash_warning)
2188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2190 else
2191 h = NULL;
2193 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2194 continue;
2196 /* We can only get preliminary data on whether a symbol is
2197 locally or externally defined, as not all of the input files
2198 have yet been processed. Do something with what we know, as
2199 this may help reduce memory usage and processing time later. */
2200 maybe_dynamic = (h && ((!bfd_link_executable (info)
2201 && (!SYMBOLIC_BIND (info, h)
2202 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2203 || !h->def_regular
2204 || h->root.type == bfd_link_hash_defweak));
2206 need_entry = 0;
2207 switch (ELFNN_R_TYPE (rel->r_info))
2209 case R_IA64_TPREL64MSB:
2210 case R_IA64_TPREL64LSB:
2211 if (bfd_link_pic (info) || maybe_dynamic)
2212 need_entry = NEED_DYNREL;
2213 break;
2215 case R_IA64_LTOFF_TPREL22:
2216 need_entry = NEED_TPREL;
2217 if (bfd_link_pic (info))
2218 info->flags |= DF_STATIC_TLS;
2219 break;
2221 case R_IA64_DTPREL32MSB:
2222 case R_IA64_DTPREL32LSB:
2223 case R_IA64_DTPREL64MSB:
2224 case R_IA64_DTPREL64LSB:
2225 if (bfd_link_pic (info) || maybe_dynamic)
2226 need_entry = NEED_DYNREL;
2227 break;
2229 case R_IA64_LTOFF_DTPREL22:
2230 need_entry = NEED_DTPREL;
2231 break;
2233 case R_IA64_DTPMOD64MSB:
2234 case R_IA64_DTPMOD64LSB:
2235 if (bfd_link_pic (info) || maybe_dynamic)
2236 need_entry = NEED_DYNREL;
2237 break;
2239 case R_IA64_LTOFF_DTPMOD22:
2240 need_entry = NEED_DTPMOD;
2241 break;
2243 case R_IA64_LTOFF_FPTR22:
2244 case R_IA64_LTOFF_FPTR64I:
2245 case R_IA64_LTOFF_FPTR32MSB:
2246 case R_IA64_LTOFF_FPTR32LSB:
2247 case R_IA64_LTOFF_FPTR64MSB:
2248 case R_IA64_LTOFF_FPTR64LSB:
2249 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2250 break;
2252 case R_IA64_FPTR64I:
2253 case R_IA64_FPTR32MSB:
2254 case R_IA64_FPTR32LSB:
2255 case R_IA64_FPTR64MSB:
2256 case R_IA64_FPTR64LSB:
2257 if (bfd_link_pic (info) || h)
2258 need_entry = NEED_FPTR | NEED_DYNREL;
2259 else
2260 need_entry = NEED_FPTR;
2261 break;
2263 case R_IA64_LTOFF22:
2264 case R_IA64_LTOFF64I:
2265 need_entry = NEED_GOT;
2266 break;
2268 case R_IA64_LTOFF22X:
2269 need_entry = NEED_GOTX;
2270 break;
2272 case R_IA64_PLTOFF22:
2273 case R_IA64_PLTOFF64I:
2274 case R_IA64_PLTOFF64MSB:
2275 case R_IA64_PLTOFF64LSB:
2276 need_entry = NEED_PLTOFF;
2277 if (h)
2279 if (maybe_dynamic)
2280 need_entry |= NEED_MIN_PLT;
2282 else
2284 (*info->callbacks->warning)
2285 (info, _("@pltoff reloc against local symbol"), 0,
2286 abfd, 0, (bfd_vma) 0);
2288 break;
2290 case R_IA64_PCREL21B:
2291 case R_IA64_PCREL60B:
2292 /* Depending on where this symbol is defined, we may or may not
2293 need a full plt entry. Only skip if we know we'll not need
2294 the entry -- static or symbolic, and the symbol definition
2295 has already been seen. */
2296 if (maybe_dynamic && rel->r_addend == 0)
2297 need_entry = NEED_FULL_PLT;
2298 break;
2300 case R_IA64_IMM14:
2301 case R_IA64_IMM22:
2302 case R_IA64_IMM64:
2303 case R_IA64_DIR32MSB:
2304 case R_IA64_DIR32LSB:
2305 case R_IA64_DIR64MSB:
2306 case R_IA64_DIR64LSB:
2307 /* Shared objects will always need at least a REL relocation. */
2308 if (bfd_link_pic (info) || maybe_dynamic)
2309 need_entry = NEED_DYNREL;
2310 break;
2312 case R_IA64_IPLTMSB:
2313 case R_IA64_IPLTLSB:
2314 /* Shared objects will always need at least a REL relocation. */
2315 if (bfd_link_pic (info) || maybe_dynamic)
2316 need_entry = NEED_DYNREL;
2317 break;
2319 case R_IA64_PCREL22:
2320 case R_IA64_PCREL64I:
2321 case R_IA64_PCREL32MSB:
2322 case R_IA64_PCREL32LSB:
2323 case R_IA64_PCREL64MSB:
2324 case R_IA64_PCREL64LSB:
2325 if (maybe_dynamic)
2326 need_entry = NEED_DYNREL;
2327 break;
2330 if (!need_entry)
2331 continue;
2333 if ((need_entry & NEED_FPTR) != 0
2334 && rel->r_addend)
2336 (*info->callbacks->warning)
2337 (info, _("non-zero addend in @fptr reloc"), 0,
2338 abfd, 0, (bfd_vma) 0);
2341 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2342 return FALSE;
2345 /* Now, we only do lookup without insertion, which is very fast
2346 with the modified get_dyn_sym_info. */
2347 for (rel = relocs; rel < relend; ++rel)
2349 struct elfNN_ia64_dyn_sym_info *dyn_i;
2350 int dynrel_type = R_IA64_NONE;
2352 r_symndx = ELFNN_R_SYM (rel->r_info);
2353 if (r_symndx >= symtab_hdr->sh_info)
2355 /* We're dealing with a global symbol -- find its hash entry
2356 and mark it as being referenced. */
2357 long indx = r_symndx - symtab_hdr->sh_info;
2358 h = elf_sym_hashes (abfd)[indx];
2359 while (h->root.type == bfd_link_hash_indirect
2360 || h->root.type == bfd_link_hash_warning)
2361 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2363 /* PR15323, ref flags aren't set for references in the same
2364 object. */
2365 h->root.non_ir_ref_regular = 1;
2366 h->ref_regular = 1;
2368 else
2369 h = NULL;
2371 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2372 continue;
2374 /* We can only get preliminary data on whether a symbol is
2375 locally or externally defined, as not all of the input files
2376 have yet been processed. Do something with what we know, as
2377 this may help reduce memory usage and processing time later. */
2378 maybe_dynamic = (h && ((!bfd_link_executable (info)
2379 && (!SYMBOLIC_BIND (info, h)
2380 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2381 || !h->def_regular
2382 || h->root.type == bfd_link_hash_defweak));
2384 need_entry = 0;
2385 switch (ELFNN_R_TYPE (rel->r_info))
2387 case R_IA64_TPREL64MSB:
2388 case R_IA64_TPREL64LSB:
2389 if (bfd_link_pic (info) || maybe_dynamic)
2390 need_entry = NEED_DYNREL;
2391 dynrel_type = R_IA64_TPREL64LSB;
2392 if (bfd_link_pic (info))
2393 info->flags |= DF_STATIC_TLS;
2394 break;
2396 case R_IA64_LTOFF_TPREL22:
2397 need_entry = NEED_TPREL;
2398 if (bfd_link_pic (info))
2399 info->flags |= DF_STATIC_TLS;
2400 break;
2402 case R_IA64_DTPREL32MSB:
2403 case R_IA64_DTPREL32LSB:
2404 case R_IA64_DTPREL64MSB:
2405 case R_IA64_DTPREL64LSB:
2406 if (bfd_link_pic (info) || maybe_dynamic)
2407 need_entry = NEED_DYNREL;
2408 dynrel_type = R_IA64_DTPRELNNLSB;
2409 break;
2411 case R_IA64_LTOFF_DTPREL22:
2412 need_entry = NEED_DTPREL;
2413 break;
2415 case R_IA64_DTPMOD64MSB:
2416 case R_IA64_DTPMOD64LSB:
2417 if (bfd_link_pic (info) || maybe_dynamic)
2418 need_entry = NEED_DYNREL;
2419 dynrel_type = R_IA64_DTPMOD64LSB;
2420 break;
2422 case R_IA64_LTOFF_DTPMOD22:
2423 need_entry = NEED_DTPMOD;
2424 break;
2426 case R_IA64_LTOFF_FPTR22:
2427 case R_IA64_LTOFF_FPTR64I:
2428 case R_IA64_LTOFF_FPTR32MSB:
2429 case R_IA64_LTOFF_FPTR32LSB:
2430 case R_IA64_LTOFF_FPTR64MSB:
2431 case R_IA64_LTOFF_FPTR64LSB:
2432 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2433 break;
2435 case R_IA64_FPTR64I:
2436 case R_IA64_FPTR32MSB:
2437 case R_IA64_FPTR32LSB:
2438 case R_IA64_FPTR64MSB:
2439 case R_IA64_FPTR64LSB:
2440 if (bfd_link_pic (info) || h)
2441 need_entry = NEED_FPTR | NEED_DYNREL;
2442 else
2443 need_entry = NEED_FPTR;
2444 dynrel_type = R_IA64_FPTRNNLSB;
2445 break;
2447 case R_IA64_LTOFF22:
2448 case R_IA64_LTOFF64I:
2449 need_entry = NEED_GOT;
2450 break;
2452 case R_IA64_LTOFF22X:
2453 need_entry = NEED_GOTX;
2454 break;
2456 case R_IA64_PLTOFF22:
2457 case R_IA64_PLTOFF64I:
2458 case R_IA64_PLTOFF64MSB:
2459 case R_IA64_PLTOFF64LSB:
2460 need_entry = NEED_PLTOFF;
2461 if (h)
2463 if (maybe_dynamic)
2464 need_entry |= NEED_MIN_PLT;
2466 break;
2468 case R_IA64_PCREL21B:
2469 case R_IA64_PCREL60B:
2470 /* Depending on where this symbol is defined, we may or may not
2471 need a full plt entry. Only skip if we know we'll not need
2472 the entry -- static or symbolic, and the symbol definition
2473 has already been seen. */
2474 if (maybe_dynamic && rel->r_addend == 0)
2475 need_entry = NEED_FULL_PLT;
2476 break;
2478 case R_IA64_IMM14:
2479 case R_IA64_IMM22:
2480 case R_IA64_IMM64:
2481 case R_IA64_DIR32MSB:
2482 case R_IA64_DIR32LSB:
2483 case R_IA64_DIR64MSB:
2484 case R_IA64_DIR64LSB:
2485 /* Shared objects will always need at least a REL relocation. */
2486 if (bfd_link_pic (info) || maybe_dynamic)
2487 need_entry = NEED_DYNREL;
2488 dynrel_type = R_IA64_DIRNNLSB;
2489 break;
2491 case R_IA64_IPLTMSB:
2492 case R_IA64_IPLTLSB:
2493 /* Shared objects will always need at least a REL relocation. */
2494 if (bfd_link_pic (info) || maybe_dynamic)
2495 need_entry = NEED_DYNREL;
2496 dynrel_type = R_IA64_IPLTLSB;
2497 break;
2499 case R_IA64_PCREL22:
2500 case R_IA64_PCREL64I:
2501 case R_IA64_PCREL32MSB:
2502 case R_IA64_PCREL32LSB:
2503 case R_IA64_PCREL64MSB:
2504 case R_IA64_PCREL64LSB:
2505 if (maybe_dynamic)
2506 need_entry = NEED_DYNREL;
2507 dynrel_type = R_IA64_PCRELNNLSB;
2508 break;
2511 if (!need_entry)
2512 continue;
2514 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2516 /* Record whether or not this is a local symbol. */
2517 dyn_i->h = h;
2519 /* Create what's needed. */
2520 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2521 | NEED_DTPMOD | NEED_DTPREL))
2523 if (!got)
2525 got = get_got (abfd, info, ia64_info);
2526 if (!got)
2527 return FALSE;
2529 if (need_entry & NEED_GOT)
2530 dyn_i->want_got = 1;
2531 if (need_entry & NEED_GOTX)
2532 dyn_i->want_gotx = 1;
2533 if (need_entry & NEED_TPREL)
2534 dyn_i->want_tprel = 1;
2535 if (need_entry & NEED_DTPMOD)
2536 dyn_i->want_dtpmod = 1;
2537 if (need_entry & NEED_DTPREL)
2538 dyn_i->want_dtprel = 1;
2540 if (need_entry & NEED_FPTR)
2542 if (!fptr)
2544 fptr = get_fptr (abfd, info, ia64_info);
2545 if (!fptr)
2546 return FALSE;
2549 /* FPTRs for shared libraries are allocated by the dynamic
2550 linker. Make sure this local symbol will appear in the
2551 dynamic symbol table. */
2552 if (!h && bfd_link_pic (info))
2554 if (! (bfd_elf_link_record_local_dynamic_symbol
2555 (info, abfd, (long) r_symndx)))
2556 return FALSE;
2559 dyn_i->want_fptr = 1;
2561 if (need_entry & NEED_LTOFF_FPTR)
2562 dyn_i->want_ltoff_fptr = 1;
2563 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2565 if (!ia64_info->root.dynobj)
2566 ia64_info->root.dynobj = abfd;
2567 h->needs_plt = 1;
2568 dyn_i->want_plt = 1;
2570 if (need_entry & NEED_FULL_PLT)
2571 dyn_i->want_plt2 = 1;
2572 if (need_entry & NEED_PLTOFF)
2574 /* This is needed here, in case @pltoff is used in a non-shared
2575 link. */
2576 if (!pltoff)
2578 pltoff = get_pltoff (abfd, info, ia64_info);
2579 if (!pltoff)
2580 return FALSE;
2583 dyn_i->want_pltoff = 1;
2585 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2587 if (!srel)
2589 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2590 if (!srel)
2591 return FALSE;
2593 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2594 (sec->flags & SEC_READONLY) != 0))
2595 return FALSE;
2599 return TRUE;
2602 /* For cleanliness, and potentially faster dynamic loading, allocate
2603 external GOT entries first. */
2605 static bfd_boolean
2606 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2607 void * data)
2609 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2611 if ((dyn_i->want_got || dyn_i->want_gotx)
2612 && ! dyn_i->want_fptr
2613 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2615 dyn_i->got_offset = x->ofs;
2616 x->ofs += 8;
2618 if (dyn_i->want_tprel)
2620 dyn_i->tprel_offset = x->ofs;
2621 x->ofs += 8;
2623 if (dyn_i->want_dtpmod)
2625 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2627 dyn_i->dtpmod_offset = x->ofs;
2628 x->ofs += 8;
2630 else
2632 struct elfNN_ia64_link_hash_table *ia64_info;
2634 ia64_info = elfNN_ia64_hash_table (x->info);
2635 if (ia64_info == NULL)
2636 return FALSE;
2638 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2640 ia64_info->self_dtpmod_offset = x->ofs;
2641 x->ofs += 8;
2643 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2646 if (dyn_i->want_dtprel)
2648 dyn_i->dtprel_offset = x->ofs;
2649 x->ofs += 8;
2651 return TRUE;
2654 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2656 static bfd_boolean
2657 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2658 void * data)
2660 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2662 if (dyn_i->want_got
2663 && dyn_i->want_fptr
2664 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2666 dyn_i->got_offset = x->ofs;
2667 x->ofs += 8;
2669 return TRUE;
2672 /* Lastly, allocate all the GOT entries for local data. */
2674 static bfd_boolean
2675 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2676 void * data)
2678 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2680 if ((dyn_i->want_got || dyn_i->want_gotx)
2681 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2683 dyn_i->got_offset = x->ofs;
2684 x->ofs += 8;
2686 return TRUE;
2689 /* Search for the index of a global symbol in it's defining object file. */
2691 static long
2692 global_sym_index (struct elf_link_hash_entry *h)
2694 struct elf_link_hash_entry **p;
2695 bfd *obj;
2697 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2698 || h->root.type == bfd_link_hash_defweak);
2700 obj = h->root.u.def.section->owner;
2701 for (p = elf_sym_hashes (obj); *p != h; ++p)
2702 continue;
2704 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2707 /* Allocate function descriptors. We can do these for every function
2708 in a main executable that is not exported. */
2710 static bfd_boolean
2711 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2713 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2715 if (dyn_i->want_fptr)
2717 struct elf_link_hash_entry *h = dyn_i->h;
2719 if (h)
2720 while (h->root.type == bfd_link_hash_indirect
2721 || h->root.type == bfd_link_hash_warning)
2722 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2724 if (!bfd_link_executable (x->info)
2725 && (!h
2726 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2727 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h))
2728 || (h->root.type != bfd_link_hash_undefweak
2729 && h->root.type != bfd_link_hash_undefined)))
2731 if (h && h->dynindx == -1)
2733 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2734 || (h->root.type == bfd_link_hash_defweak));
2736 if (!bfd_elf_link_record_local_dynamic_symbol
2737 (x->info, h->root.u.def.section->owner,
2738 global_sym_index (h)))
2739 return FALSE;
2742 dyn_i->want_fptr = 0;
2744 else if (h == NULL || h->dynindx == -1)
2746 dyn_i->fptr_offset = x->ofs;
2747 x->ofs += 16;
2749 else
2750 dyn_i->want_fptr = 0;
2752 return TRUE;
2755 /* Allocate all the minimal PLT entries. */
2757 static bfd_boolean
2758 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2759 void * data)
2761 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2763 if (dyn_i->want_plt)
2765 struct elf_link_hash_entry *h = dyn_i->h;
2767 if (h)
2768 while (h->root.type == bfd_link_hash_indirect
2769 || h->root.type == bfd_link_hash_warning)
2770 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2772 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2773 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2775 bfd_size_type offset = x->ofs;
2776 if (offset == 0)
2777 offset = PLT_HEADER_SIZE;
2778 dyn_i->plt_offset = offset;
2779 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2781 dyn_i->want_pltoff = 1;
2783 else
2785 dyn_i->want_plt = 0;
2786 dyn_i->want_plt2 = 0;
2789 return TRUE;
2792 /* Allocate all the full PLT entries. */
2794 static bfd_boolean
2795 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2796 void * data)
2798 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2800 if (dyn_i->want_plt2)
2802 struct elf_link_hash_entry *h = dyn_i->h;
2803 bfd_size_type ofs = x->ofs;
2805 dyn_i->plt2_offset = ofs;
2806 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2808 while (h->root.type == bfd_link_hash_indirect
2809 || h->root.type == bfd_link_hash_warning)
2810 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2811 dyn_i->h->plt.offset = ofs;
2813 return TRUE;
2816 /* Allocate all the PLTOFF entries requested by relocations and
2817 plt entries. We can't share space with allocated FPTR entries,
2818 because the latter are not necessarily addressable by the GP.
2819 ??? Relaxation might be able to determine that they are. */
2821 static bfd_boolean
2822 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2823 void * data)
2825 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2827 if (dyn_i->want_pltoff)
2829 dyn_i->pltoff_offset = x->ofs;
2830 x->ofs += 16;
2832 return TRUE;
2835 /* Allocate dynamic relocations for those symbols that turned out
2836 to be dynamic. */
2838 static bfd_boolean
2839 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2840 void * data)
2842 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2843 struct elfNN_ia64_link_hash_table *ia64_info;
2844 struct elfNN_ia64_dyn_reloc_entry *rent;
2845 bfd_boolean dynamic_symbol, shared, resolved_zero;
2847 ia64_info = elfNN_ia64_hash_table (x->info);
2848 if (ia64_info == NULL)
2849 return FALSE;
2851 /* Note that this can't be used in relation to FPTR relocs below. */
2852 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2854 shared = bfd_link_pic (x->info);
2855 resolved_zero = (dyn_i->h
2856 && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info,
2857 dyn_i->h));
2859 /* Take care of the GOT and PLT relocations. */
2861 if ((!resolved_zero
2862 && (dynamic_symbol || shared)
2863 && (dyn_i->want_got || dyn_i->want_gotx))
2864 || (dyn_i->want_ltoff_fptr
2865 && dyn_i->h
2866 && dyn_i->h->dynindx != -1))
2868 if (!dyn_i->want_ltoff_fptr
2869 || !bfd_link_pie (x->info)
2870 || dyn_i->h == NULL
2871 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2872 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2874 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2875 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2876 if (dynamic_symbol && dyn_i->want_dtpmod)
2877 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2878 if (dynamic_symbol && dyn_i->want_dtprel)
2879 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2881 if (x->only_got)
2882 return TRUE;
2884 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2886 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2887 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2890 if (!resolved_zero && dyn_i->want_pltoff)
2892 bfd_size_type t = 0;
2894 /* Dynamic symbols get one IPLT relocation. Local symbols in
2895 shared libraries get two REL relocations. Local symbols in
2896 main applications get nothing. */
2897 if (dynamic_symbol)
2898 t = sizeof (ElfNN_External_Rela);
2899 else if (shared)
2900 t = 2 * sizeof (ElfNN_External_Rela);
2902 ia64_info->rel_pltoff_sec->size += t;
2905 /* Take care of the normal data relocations. */
2907 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2909 int count = rent->count;
2911 switch (rent->type)
2913 case R_IA64_FPTR32LSB:
2914 case R_IA64_FPTR64LSB:
2915 /* Allocate one iff !want_fptr and not PIE, which by this point
2916 will be true only if we're actually allocating one statically
2917 in the main executable. Position independent executables
2918 need a relative reloc. */
2919 if (dyn_i->want_fptr && !bfd_link_pie (x->info))
2920 continue;
2921 break;
2922 case R_IA64_PCREL32LSB:
2923 case R_IA64_PCREL64LSB:
2924 if (!dynamic_symbol)
2925 continue;
2926 break;
2927 case R_IA64_DIR32LSB:
2928 case R_IA64_DIR64LSB:
2929 if (!dynamic_symbol && !shared)
2930 continue;
2931 break;
2932 case R_IA64_IPLTLSB:
2933 if (!dynamic_symbol && !shared)
2934 continue;
2935 /* Use two REL relocations for IPLT relocations
2936 against local symbols. */
2937 if (!dynamic_symbol)
2938 count *= 2;
2939 break;
2940 case R_IA64_DTPREL32LSB:
2941 case R_IA64_TPREL64LSB:
2942 case R_IA64_DTPREL64LSB:
2943 case R_IA64_DTPMOD64LSB:
2944 break;
2945 default:
2946 abort ();
2948 if (rent->reltext)
2949 ia64_info->reltext = 1;
2950 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2953 return TRUE;
2956 static bfd_boolean
2957 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2958 struct elf_link_hash_entry *h)
2960 /* ??? Undefined symbols with PLT entries should be re-defined
2961 to be the PLT entry. */
2963 /* If this is a weak symbol, and there is a real definition, the
2964 processor independent code will have arranged for us to see the
2965 real definition first, and we can just use the same value. */
2966 if (h->u.weakdef != NULL)
2968 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2969 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2970 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2971 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2972 return TRUE;
2975 /* If this is a reference to a symbol defined by a dynamic object which
2976 is not a function, we might allocate the symbol in our .dynbss section
2977 and allocate a COPY dynamic relocation.
2979 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2980 of hackery. */
2982 return TRUE;
2985 static bfd_boolean
2986 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2987 struct bfd_link_info *info)
2989 struct elfNN_ia64_allocate_data data;
2990 struct elfNN_ia64_link_hash_table *ia64_info;
2991 asection *sec;
2992 bfd *dynobj;
2993 bfd_boolean relplt = FALSE;
2995 ia64_info = elfNN_ia64_hash_table (info);
2996 if (ia64_info == NULL)
2997 return FALSE;
2998 dynobj = ia64_info->root.dynobj;
2999 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
3000 BFD_ASSERT(dynobj != NULL);
3001 data.info = info;
3003 /* Set the contents of the .interp section to the interpreter. */
3004 if (ia64_info->root.dynamic_sections_created
3005 && bfd_link_executable (info) && !info->nointerp)
3007 sec = bfd_get_linker_section (dynobj, ".interp");
3008 BFD_ASSERT (sec != NULL);
3009 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3010 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3013 /* Allocate the GOT entries. */
3015 if (ia64_info->root.sgot)
3017 data.ofs = 0;
3018 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3019 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3020 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3021 ia64_info->root.sgot->size = data.ofs;
3024 /* Allocate the FPTR entries. */
3026 if (ia64_info->fptr_sec)
3028 data.ofs = 0;
3029 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3030 ia64_info->fptr_sec->size = data.ofs;
3033 /* Now that we've seen all of the input files, we can decide which
3034 symbols need plt entries. Allocate the minimal PLT entries first.
3035 We do this even though dynamic_sections_created may be FALSE, because
3036 this has the side-effect of clearing want_plt and want_plt2. */
3038 data.ofs = 0;
3039 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3041 ia64_info->minplt_entries = 0;
3042 if (data.ofs)
3044 ia64_info->minplt_entries
3045 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3048 /* Align the pointer for the plt2 entries. */
3049 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3051 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3052 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3054 /* FIXME: we always reserve the memory for dynamic linker even if
3055 there are no PLT entries since dynamic linker may assume the
3056 reserved memory always exists. */
3058 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3060 ia64_info->root.splt->size = data.ofs;
3062 /* If we've got a .plt, we need some extra memory for the dynamic
3063 linker. We stuff these in .got.plt. */
3064 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
3067 /* Allocate the PLTOFF entries. */
3069 if (ia64_info->pltoff_sec)
3071 data.ofs = 0;
3072 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3073 ia64_info->pltoff_sec->size = data.ofs;
3076 if (ia64_info->root.dynamic_sections_created)
3078 /* Allocate space for the dynamic relocations that turned out to be
3079 required. */
3081 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3082 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3083 data.only_got = FALSE;
3084 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3087 /* We have now determined the sizes of the various dynamic sections.
3088 Allocate memory for them. */
3089 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3091 bfd_boolean strip;
3093 if (!(sec->flags & SEC_LINKER_CREATED))
3094 continue;
3096 /* If we don't need this section, strip it from the output file.
3097 There were several sections primarily related to dynamic
3098 linking that must be create before the linker maps input
3099 sections to output sections. The linker does that before
3100 bfd_elf_size_dynamic_sections is called, and it is that
3101 function which decides whether anything needs to go into
3102 these sections. */
3104 strip = (sec->size == 0);
3106 if (sec == ia64_info->root.sgot)
3107 strip = FALSE;
3108 else if (sec == ia64_info->root.srelgot)
3110 if (strip)
3111 ia64_info->root.srelgot = NULL;
3112 else
3113 /* We use the reloc_count field as a counter if we need to
3114 copy relocs into the output file. */
3115 sec->reloc_count = 0;
3117 else if (sec == ia64_info->fptr_sec)
3119 if (strip)
3120 ia64_info->fptr_sec = NULL;
3122 else if (sec == ia64_info->rel_fptr_sec)
3124 if (strip)
3125 ia64_info->rel_fptr_sec = NULL;
3126 else
3127 /* We use the reloc_count field as a counter if we need to
3128 copy relocs into the output file. */
3129 sec->reloc_count = 0;
3131 else if (sec == ia64_info->root.splt)
3133 if (strip)
3134 ia64_info->root.splt = NULL;
3136 else if (sec == ia64_info->pltoff_sec)
3138 if (strip)
3139 ia64_info->pltoff_sec = NULL;
3141 else if (sec == ia64_info->rel_pltoff_sec)
3143 if (strip)
3144 ia64_info->rel_pltoff_sec = NULL;
3145 else
3147 relplt = TRUE;
3148 /* We use the reloc_count field as a counter if we need to
3149 copy relocs into the output file. */
3150 sec->reloc_count = 0;
3153 else
3155 const char *name;
3157 /* It's OK to base decisions on the section name, because none
3158 of the dynobj section names depend upon the input files. */
3159 name = bfd_get_section_name (dynobj, sec);
3161 if (strcmp (name, ".got.plt") == 0)
3162 strip = FALSE;
3163 else if (CONST_STRNEQ (name, ".rel"))
3165 if (!strip)
3167 /* We use the reloc_count field as a counter if we need to
3168 copy relocs into the output file. */
3169 sec->reloc_count = 0;
3172 else
3173 continue;
3176 if (strip)
3177 sec->flags |= SEC_EXCLUDE;
3178 else
3180 /* Allocate memory for the section contents. */
3181 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3182 if (sec->contents == NULL && sec->size != 0)
3183 return FALSE;
3187 if (ia64_info->root.dynamic_sections_created)
3189 /* Add some entries to the .dynamic section. We fill in the values
3190 later (in finish_dynamic_sections) but we must add the entries now
3191 so that we get the correct size for the .dynamic section. */
3193 if (bfd_link_executable (info))
3195 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3196 by the debugger. */
3197 #define add_dynamic_entry(TAG, VAL) \
3198 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3200 if (!add_dynamic_entry (DT_DEBUG, 0))
3201 return FALSE;
3204 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3205 return FALSE;
3206 if (!add_dynamic_entry (DT_PLTGOT, 0))
3207 return FALSE;
3209 if (relplt)
3211 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3212 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3213 || !add_dynamic_entry (DT_JMPREL, 0))
3214 return FALSE;
3217 if (!add_dynamic_entry (DT_RELA, 0)
3218 || !add_dynamic_entry (DT_RELASZ, 0)
3219 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3220 return FALSE;
3222 if (ia64_info->reltext)
3224 if (!add_dynamic_entry (DT_TEXTREL, 0))
3225 return FALSE;
3226 info->flags |= DF_TEXTREL;
3230 /* ??? Perhaps force __gp local. */
3232 return TRUE;
3235 static void
3236 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3237 asection *sec, asection *srel,
3238 bfd_vma offset, unsigned int type,
3239 long dynindx, bfd_vma addend)
3241 Elf_Internal_Rela outrel;
3242 bfd_byte *loc;
3244 BFD_ASSERT (dynindx != -1);
3245 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3246 outrel.r_addend = addend;
3247 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3248 if (outrel.r_offset >= (bfd_vma) -2)
3250 /* Run for the hills. We shouldn't be outputting a relocation
3251 for this. So do what everyone else does and output a no-op. */
3252 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3253 outrel.r_addend = 0;
3254 outrel.r_offset = 0;
3256 else
3257 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3259 loc = srel->contents;
3260 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3261 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3262 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3265 /* Store an entry for target address TARGET_ADDR in the linkage table
3266 and return the gp-relative address of the linkage table entry. */
3268 static bfd_vma
3269 set_got_entry (bfd *abfd, struct bfd_link_info *info,
3270 struct elfNN_ia64_dyn_sym_info *dyn_i,
3271 long dynindx, bfd_vma addend, bfd_vma value,
3272 unsigned int dyn_r_type)
3274 struct elfNN_ia64_link_hash_table *ia64_info;
3275 asection *got_sec;
3276 bfd_boolean done;
3277 bfd_vma got_offset;
3279 ia64_info = elfNN_ia64_hash_table (info);
3280 if (ia64_info == NULL)
3281 return 0;
3283 got_sec = ia64_info->root.sgot;
3285 switch (dyn_r_type)
3287 case R_IA64_TPREL64LSB:
3288 done = dyn_i->tprel_done;
3289 dyn_i->tprel_done = TRUE;
3290 got_offset = dyn_i->tprel_offset;
3291 break;
3292 case R_IA64_DTPMOD64LSB:
3293 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3295 done = dyn_i->dtpmod_done;
3296 dyn_i->dtpmod_done = TRUE;
3298 else
3300 done = ia64_info->self_dtpmod_done;
3301 ia64_info->self_dtpmod_done = TRUE;
3302 dynindx = 0;
3304 got_offset = dyn_i->dtpmod_offset;
3305 break;
3306 case R_IA64_DTPREL32LSB:
3307 case R_IA64_DTPREL64LSB:
3308 done = dyn_i->dtprel_done;
3309 dyn_i->dtprel_done = TRUE;
3310 got_offset = dyn_i->dtprel_offset;
3311 break;
3312 default:
3313 done = dyn_i->got_done;
3314 dyn_i->got_done = TRUE;
3315 got_offset = dyn_i->got_offset;
3316 break;
3319 BFD_ASSERT ((got_offset & 7) == 0);
3321 if (! done)
3323 /* Store the target address in the linkage table entry. */
3324 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3326 /* Install a dynamic relocation if needed. */
3327 if (((bfd_link_pic (info)
3328 && (!dyn_i->h
3329 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3330 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3331 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3332 && dyn_r_type != R_IA64_DTPREL32LSB
3333 && dyn_r_type != R_IA64_DTPREL64LSB)
3334 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3335 || (dynindx != -1
3336 && (dyn_r_type == R_IA64_FPTR32LSB
3337 || dyn_r_type == R_IA64_FPTR64LSB)))
3338 && (!dyn_i->want_ltoff_fptr
3339 || !bfd_link_pie (info)
3340 || !dyn_i->h
3341 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3343 if (dynindx == -1
3344 && dyn_r_type != R_IA64_TPREL64LSB
3345 && dyn_r_type != R_IA64_DTPMOD64LSB
3346 && dyn_r_type != R_IA64_DTPREL32LSB
3347 && dyn_r_type != R_IA64_DTPREL64LSB)
3349 dyn_r_type = R_IA64_RELNNLSB;
3350 dynindx = 0;
3351 addend = value;
3354 if (bfd_big_endian (abfd))
3356 switch (dyn_r_type)
3358 case R_IA64_REL32LSB:
3359 dyn_r_type = R_IA64_REL32MSB;
3360 break;
3361 case R_IA64_DIR32LSB:
3362 dyn_r_type = R_IA64_DIR32MSB;
3363 break;
3364 case R_IA64_FPTR32LSB:
3365 dyn_r_type = R_IA64_FPTR32MSB;
3366 break;
3367 case R_IA64_DTPREL32LSB:
3368 dyn_r_type = R_IA64_DTPREL32MSB;
3369 break;
3370 case R_IA64_REL64LSB:
3371 dyn_r_type = R_IA64_REL64MSB;
3372 break;
3373 case R_IA64_DIR64LSB:
3374 dyn_r_type = R_IA64_DIR64MSB;
3375 break;
3376 case R_IA64_FPTR64LSB:
3377 dyn_r_type = R_IA64_FPTR64MSB;
3378 break;
3379 case R_IA64_TPREL64LSB:
3380 dyn_r_type = R_IA64_TPREL64MSB;
3381 break;
3382 case R_IA64_DTPMOD64LSB:
3383 dyn_r_type = R_IA64_DTPMOD64MSB;
3384 break;
3385 case R_IA64_DTPREL64LSB:
3386 dyn_r_type = R_IA64_DTPREL64MSB;
3387 break;
3388 default:
3389 BFD_ASSERT (FALSE);
3390 break;
3394 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3395 ia64_info->root.srelgot,
3396 got_offset, dyn_r_type,
3397 dynindx, addend);
3401 /* Return the address of the linkage table entry. */
3402 value = (got_sec->output_section->vma
3403 + got_sec->output_offset
3404 + got_offset);
3406 return value;
3409 /* Fill in a function descriptor consisting of the function's code
3410 address and its global pointer. Return the descriptor's address. */
3412 static bfd_vma
3413 set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3414 struct elfNN_ia64_dyn_sym_info *dyn_i,
3415 bfd_vma value)
3417 struct elfNN_ia64_link_hash_table *ia64_info;
3418 asection *fptr_sec;
3420 ia64_info = elfNN_ia64_hash_table (info);
3421 if (ia64_info == NULL)
3422 return 0;
3424 fptr_sec = ia64_info->fptr_sec;
3426 if (!dyn_i->fptr_done)
3428 dyn_i->fptr_done = 1;
3430 /* Fill in the function descriptor. */
3431 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3432 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3433 fptr_sec->contents + dyn_i->fptr_offset + 8);
3434 if (ia64_info->rel_fptr_sec)
3436 Elf_Internal_Rela outrel;
3437 bfd_byte *loc;
3439 if (bfd_little_endian (abfd))
3440 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3441 else
3442 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3443 outrel.r_addend = value;
3444 outrel.r_offset = (fptr_sec->output_section->vma
3445 + fptr_sec->output_offset
3446 + dyn_i->fptr_offset);
3447 loc = ia64_info->rel_fptr_sec->contents;
3448 loc += ia64_info->rel_fptr_sec->reloc_count++
3449 * sizeof (ElfNN_External_Rela);
3450 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3454 /* Return the descriptor's address. */
3455 value = (fptr_sec->output_section->vma
3456 + fptr_sec->output_offset
3457 + dyn_i->fptr_offset);
3459 return value;
3462 /* Fill in a PLTOFF entry consisting of the function's code address
3463 and its global pointer. Return the descriptor's address. */
3465 static bfd_vma
3466 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3467 struct elfNN_ia64_dyn_sym_info *dyn_i,
3468 bfd_vma value, bfd_boolean is_plt)
3470 struct elfNN_ia64_link_hash_table *ia64_info;
3471 asection *pltoff_sec;
3473 ia64_info = elfNN_ia64_hash_table (info);
3474 if (ia64_info == NULL)
3475 return 0;
3477 pltoff_sec = ia64_info->pltoff_sec;
3479 /* Don't do anything if this symbol uses a real PLT entry. In
3480 that case, we'll fill this in during finish_dynamic_symbol. */
3481 if ((! dyn_i->want_plt || is_plt)
3482 && !dyn_i->pltoff_done)
3484 bfd_vma gp = _bfd_get_gp_value (abfd);
3486 /* Fill in the function descriptor. */
3487 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3488 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3490 /* Install dynamic relocations if needed. */
3491 if (!is_plt
3492 && bfd_link_pic (info)
3493 && (!dyn_i->h
3494 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3495 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
3496 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3498 unsigned int dyn_r_type;
3500 if (bfd_big_endian (abfd))
3501 dyn_r_type = R_IA64_RELNNMSB;
3502 else
3503 dyn_r_type = R_IA64_RELNNLSB;
3505 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3506 ia64_info->rel_pltoff_sec,
3507 dyn_i->pltoff_offset,
3508 dyn_r_type, 0, value);
3509 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3510 ia64_info->rel_pltoff_sec,
3511 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3512 dyn_r_type, 0, gp);
3515 dyn_i->pltoff_done = 1;
3518 /* Return the descriptor's address. */
3519 value = (pltoff_sec->output_section->vma
3520 + pltoff_sec->output_offset
3521 + dyn_i->pltoff_offset);
3523 return value;
3526 /* Return the base VMA address which should be subtracted from real addresses
3527 when resolving @tprel() relocation.
3528 Main program TLS (whose template starts at PT_TLS p_vaddr)
3529 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3531 static bfd_vma
3532 elfNN_ia64_tprel_base (struct bfd_link_info *info)
3534 asection *tls_sec = elf_hash_table (info)->tls_sec;
3535 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3536 tls_sec->alignment_power);
3539 /* Return the base VMA address which should be subtracted from real addresses
3540 when resolving @dtprel() relocation.
3541 This is PT_TLS segment p_vaddr. */
3543 static bfd_vma
3544 elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3546 return elf_hash_table (info)->tls_sec->vma;
3549 /* Called through qsort to sort the .IA_64.unwind section during a
3550 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3551 to the output bfd so we can do proper endianness frobbing. */
3553 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3555 static int
3556 elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3558 bfd_vma av, bv;
3560 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3561 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3563 return (av < bv ? -1 : av > bv ? 1 : 0);
3566 /* Make sure we've got ourselves a nice fat __gp value. */
3567 static bfd_boolean
3568 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3570 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3571 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3572 struct elf_link_hash_entry *gp;
3573 bfd_vma gp_val;
3574 asection *os;
3575 struct elfNN_ia64_link_hash_table *ia64_info;
3577 ia64_info = elfNN_ia64_hash_table (info);
3578 if (ia64_info == NULL)
3579 return FALSE;
3581 /* Find the min and max vma of all sections marked short. Also collect
3582 min and max vma of any type, for use in selecting a nice gp. */
3583 for (os = abfd->sections; os ; os = os->next)
3585 bfd_vma lo, hi;
3587 if ((os->flags & SEC_ALLOC) == 0)
3588 continue;
3590 lo = os->vma;
3591 /* When this function is called from elfNN_ia64_final_link
3592 the correct value to use is os->size. When called from
3593 elfNN_ia64_relax_section we are in the middle of section
3594 sizing; some sections will already have os->size set, others
3595 will have os->size zero and os->rawsize the previous size. */
3596 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3597 if (hi < lo)
3598 hi = (bfd_vma) -1;
3600 if (min_vma > lo)
3601 min_vma = lo;
3602 if (max_vma < hi)
3603 max_vma = hi;
3604 if (os->flags & SEC_SMALL_DATA)
3606 if (min_short_vma > lo)
3607 min_short_vma = lo;
3608 if (max_short_vma < hi)
3609 max_short_vma = hi;
3613 if (ia64_info->min_short_sec)
3615 if (min_short_vma
3616 > (ia64_info->min_short_sec->vma
3617 + ia64_info->min_short_offset))
3618 min_short_vma = (ia64_info->min_short_sec->vma
3619 + ia64_info->min_short_offset);
3620 if (max_short_vma
3621 < (ia64_info->max_short_sec->vma
3622 + ia64_info->max_short_offset))
3623 max_short_vma = (ia64_info->max_short_sec->vma
3624 + ia64_info->max_short_offset);
3627 /* See if the user wants to force a value. */
3628 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3629 FALSE, FALSE);
3631 if (gp
3632 && (gp->root.type == bfd_link_hash_defined
3633 || gp->root.type == bfd_link_hash_defweak))
3635 asection *gp_sec = gp->root.u.def.section;
3636 gp_val = (gp->root.u.def.value
3637 + gp_sec->output_section->vma
3638 + gp_sec->output_offset);
3640 else
3642 /* Pick a sensible value. */
3644 if (ia64_info->min_short_sec)
3646 bfd_vma short_range = max_short_vma - min_short_vma;
3648 /* If min_short_sec is set, pick one in the middle bewteen
3649 min_short_vma and max_short_vma. */
3650 if (short_range >= 0x400000)
3651 goto overflow;
3652 gp_val = min_short_vma + short_range / 2;
3654 else
3656 asection *got_sec = ia64_info->root.sgot;
3658 /* Start with just the address of the .got. */
3659 if (got_sec)
3660 gp_val = got_sec->output_section->vma;
3661 else if (max_short_vma != 0)
3662 gp_val = min_short_vma;
3663 else if (max_vma - min_vma < 0x200000)
3664 gp_val = min_vma;
3665 else
3666 gp_val = max_vma - 0x200000 + 8;
3669 /* If it is possible to address the entire image, but we
3670 don't with the choice above, adjust. */
3671 if (max_vma - min_vma < 0x400000
3672 && (max_vma - gp_val >= 0x200000
3673 || gp_val - min_vma > 0x200000))
3674 gp_val = min_vma + 0x200000;
3675 else if (max_short_vma != 0)
3677 /* If we don't cover all the short data, adjust. */
3678 if (max_short_vma - gp_val >= 0x200000)
3679 gp_val = min_short_vma + 0x200000;
3681 /* If we're addressing stuff past the end, adjust back. */
3682 if (gp_val > max_vma)
3683 gp_val = max_vma - 0x200000 + 8;
3687 /* Validate whether all SHF_IA_64_SHORT sections are within
3688 range of the chosen GP. */
3690 if (max_short_vma != 0)
3692 if (max_short_vma - min_short_vma >= 0x400000)
3694 overflow:
3695 _bfd_error_handler
3696 /* xgettext:c-format */
3697 (_("%B: short data segment overflowed (%#Lx >= 0x400000)"),
3698 abfd, max_short_vma - min_short_vma);
3699 return FALSE;
3701 else if ((gp_val > min_short_vma
3702 && gp_val - min_short_vma > 0x200000)
3703 || (gp_val < max_short_vma
3704 && max_short_vma - gp_val >= 0x200000))
3706 _bfd_error_handler
3707 (_("%B: __gp does not cover short data segment"), abfd);
3708 return FALSE;
3712 _bfd_set_gp_value (abfd, gp_val);
3714 return TRUE;
3717 static bfd_boolean
3718 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3720 struct elfNN_ia64_link_hash_table *ia64_info;
3721 asection *unwind_output_sec;
3723 ia64_info = elfNN_ia64_hash_table (info);
3724 if (ia64_info == NULL)
3725 return FALSE;
3727 /* Make sure we've got ourselves a nice fat __gp value. */
3728 if (!bfd_link_relocatable (info))
3730 bfd_vma gp_val;
3731 struct elf_link_hash_entry *gp;
3733 /* We assume after gp is set, section size will only decrease. We
3734 need to adjust gp for it. */
3735 _bfd_set_gp_value (abfd, 0);
3736 if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3737 return FALSE;
3738 gp_val = _bfd_get_gp_value (abfd);
3740 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3741 FALSE, FALSE);
3742 if (gp)
3744 gp->root.type = bfd_link_hash_defined;
3745 gp->root.u.def.value = gp_val;
3746 gp->root.u.def.section = bfd_abs_section_ptr;
3750 /* If we're producing a final executable, we need to sort the contents
3751 of the .IA_64.unwind section. Force this section to be relocated
3752 into memory rather than written immediately to the output file. */
3753 unwind_output_sec = NULL;
3754 if (!bfd_link_relocatable (info))
3756 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3757 if (s)
3759 unwind_output_sec = s->output_section;
3760 unwind_output_sec->contents
3761 = bfd_malloc (unwind_output_sec->size);
3762 if (unwind_output_sec->contents == NULL)
3763 return FALSE;
3767 /* Invoke the regular ELF backend linker to do all the work. */
3768 if (!bfd_elf_final_link (abfd, info))
3769 return FALSE;
3771 if (unwind_output_sec)
3773 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3774 qsort (unwind_output_sec->contents,
3775 (size_t) (unwind_output_sec->size / 24),
3777 elfNN_ia64_unwind_entry_compare);
3779 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3780 unwind_output_sec->contents, (bfd_vma) 0,
3781 unwind_output_sec->size))
3782 return FALSE;
3785 return TRUE;
3788 static bfd_boolean
3789 elfNN_ia64_relocate_section (bfd *output_bfd,
3790 struct bfd_link_info *info,
3791 bfd *input_bfd,
3792 asection *input_section,
3793 bfd_byte *contents,
3794 Elf_Internal_Rela *relocs,
3795 Elf_Internal_Sym *local_syms,
3796 asection **local_sections)
3798 struct elfNN_ia64_link_hash_table *ia64_info;
3799 Elf_Internal_Shdr *symtab_hdr;
3800 Elf_Internal_Rela *rel;
3801 Elf_Internal_Rela *relend;
3802 asection *srel;
3803 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3804 bfd_vma gp_val;
3806 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3807 ia64_info = elfNN_ia64_hash_table (info);
3808 if (ia64_info == NULL)
3809 return FALSE;
3811 /* Infect various flags from the input section to the output section. */
3812 if (bfd_link_relocatable (info))
3814 bfd_vma flags;
3816 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3817 flags &= SHF_IA_64_NORECOV;
3819 elf_section_data(input_section->output_section)
3820 ->this_hdr.sh_flags |= flags;
3823 gp_val = _bfd_get_gp_value (output_bfd);
3824 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3826 rel = relocs;
3827 relend = relocs + input_section->reloc_count;
3828 for (; rel < relend; ++rel)
3830 struct elf_link_hash_entry *h;
3831 struct elfNN_ia64_dyn_sym_info *dyn_i;
3832 bfd_reloc_status_type r;
3833 reloc_howto_type *howto;
3834 unsigned long r_symndx;
3835 Elf_Internal_Sym *sym;
3836 unsigned int r_type;
3837 bfd_vma value;
3838 asection *sym_sec;
3839 bfd_byte *hit_addr;
3840 bfd_boolean dynamic_symbol_p;
3841 bfd_boolean undef_weak_ref;
3843 r_type = ELFNN_R_TYPE (rel->r_info);
3844 if (r_type > R_IA64_MAX_RELOC_CODE)
3846 _bfd_error_handler
3847 /* xgettext:c-format */
3848 (_("%B: unknown relocation type %d"), input_bfd, (int) r_type);
3849 bfd_set_error (bfd_error_bad_value);
3850 ret_val = FALSE;
3851 continue;
3854 howto = ia64_elf_lookup_howto (r_type);
3855 r_symndx = ELFNN_R_SYM (rel->r_info);
3856 h = NULL;
3857 sym = NULL;
3858 sym_sec = NULL;
3859 undef_weak_ref = FALSE;
3861 if (r_symndx < symtab_hdr->sh_info)
3863 /* Reloc against local symbol. */
3864 asection *msec;
3865 sym = local_syms + r_symndx;
3866 sym_sec = local_sections[r_symndx];
3867 msec = sym_sec;
3868 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3869 if (!bfd_link_relocatable (info)
3870 && (sym_sec->flags & SEC_MERGE) != 0
3871 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3872 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3874 struct elfNN_ia64_local_hash_entry *loc_h;
3876 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3877 if (loc_h && ! loc_h->sec_merge_done)
3879 struct elfNN_ia64_dyn_sym_info *dynent;
3880 unsigned int count;
3882 for (count = loc_h->count, dynent = loc_h->info;
3883 count != 0;
3884 count--, dynent++)
3886 msec = sym_sec;
3887 dynent->addend =
3888 _bfd_merged_section_offset (output_bfd, &msec,
3889 elf_section_data (msec)->
3890 sec_info,
3891 sym->st_value
3892 + dynent->addend);
3893 dynent->addend -= sym->st_value;
3894 dynent->addend += msec->output_section->vma
3895 + msec->output_offset
3896 - sym_sec->output_section->vma
3897 - sym_sec->output_offset;
3900 /* We may have introduced duplicated entries. We need
3901 to remove them properly. */
3902 count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3903 if (count != loc_h->count)
3905 loc_h->count = count;
3906 loc_h->sorted_count = count;
3909 loc_h->sec_merge_done = 1;
3913 else
3915 bfd_boolean unresolved_reloc;
3916 bfd_boolean warned, ignored;
3917 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3919 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3920 r_symndx, symtab_hdr, sym_hashes,
3921 h, sym_sec, value,
3922 unresolved_reloc, warned, ignored);
3924 if (h->root.type == bfd_link_hash_undefweak)
3925 undef_weak_ref = TRUE;
3926 else if (warned || (ignored && bfd_link_executable (info)))
3927 continue;
3930 if (sym_sec != NULL && discarded_section (sym_sec))
3931 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3932 rel, 1, relend, howto, 0, contents);
3934 if (bfd_link_relocatable (info))
3935 continue;
3937 hit_addr = contents + rel->r_offset;
3938 value += rel->r_addend;
3939 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3941 switch (r_type)
3943 case R_IA64_NONE:
3944 case R_IA64_LDXMOV:
3945 continue;
3947 case R_IA64_IMM14:
3948 case R_IA64_IMM22:
3949 case R_IA64_IMM64:
3950 case R_IA64_DIR32MSB:
3951 case R_IA64_DIR32LSB:
3952 case R_IA64_DIR64MSB:
3953 case R_IA64_DIR64LSB:
3954 /* Install a dynamic relocation for this reloc. */
3955 if ((dynamic_symbol_p || bfd_link_pic (info))
3956 && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3957 && r_symndx != STN_UNDEF
3958 && (input_section->flags & SEC_ALLOC) != 0)
3960 unsigned int dyn_r_type;
3961 long dynindx;
3962 bfd_vma addend;
3964 BFD_ASSERT (srel != NULL);
3966 switch (r_type)
3968 case R_IA64_IMM14:
3969 case R_IA64_IMM22:
3970 case R_IA64_IMM64:
3971 /* ??? People shouldn't be doing non-pic code in
3972 shared libraries nor dynamic executables. */
3973 _bfd_error_handler
3974 /* xgettext:c-format */
3975 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3976 input_bfd,
3977 h ? h->root.root.string
3978 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3979 sym_sec));
3980 ret_val = FALSE;
3981 continue;
3983 default:
3984 break;
3987 /* If we don't need dynamic symbol lookup, find a
3988 matching RELATIVE relocation. */
3989 dyn_r_type = r_type;
3990 if (dynamic_symbol_p)
3992 dynindx = h->dynindx;
3993 addend = rel->r_addend;
3994 value = 0;
3996 else
3998 switch (r_type)
4000 case R_IA64_DIR32MSB:
4001 dyn_r_type = R_IA64_REL32MSB;
4002 break;
4003 case R_IA64_DIR32LSB:
4004 dyn_r_type = R_IA64_REL32LSB;
4005 break;
4006 case R_IA64_DIR64MSB:
4007 dyn_r_type = R_IA64_REL64MSB;
4008 break;
4009 case R_IA64_DIR64LSB:
4010 dyn_r_type = R_IA64_REL64LSB;
4011 break;
4013 default:
4014 break;
4016 dynindx = 0;
4017 addend = value;
4020 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4021 srel, rel->r_offset, dyn_r_type,
4022 dynindx, addend);
4024 /* Fall through. */
4026 case R_IA64_LTV32MSB:
4027 case R_IA64_LTV32LSB:
4028 case R_IA64_LTV64MSB:
4029 case R_IA64_LTV64LSB:
4030 r = ia64_elf_install_value (hit_addr, value, r_type);
4031 break;
4033 case R_IA64_GPREL22:
4034 case R_IA64_GPREL64I:
4035 case R_IA64_GPREL32MSB:
4036 case R_IA64_GPREL32LSB:
4037 case R_IA64_GPREL64MSB:
4038 case R_IA64_GPREL64LSB:
4039 if (dynamic_symbol_p)
4041 _bfd_error_handler
4042 /* xgettext:c-format */
4043 (_("%B: @gprel relocation against dynamic symbol %s"),
4044 input_bfd,
4045 h ? h->root.root.string
4046 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4047 sym_sec));
4048 ret_val = FALSE;
4049 continue;
4051 value -= gp_val;
4052 r = ia64_elf_install_value (hit_addr, value, r_type);
4053 break;
4055 case R_IA64_LTOFF22:
4056 case R_IA64_LTOFF22X:
4057 case R_IA64_LTOFF64I:
4058 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4059 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4060 rel->r_addend, value, R_IA64_DIRNNLSB);
4061 value -= gp_val;
4062 r = ia64_elf_install_value (hit_addr, value, r_type);
4063 break;
4065 case R_IA64_PLTOFF22:
4066 case R_IA64_PLTOFF64I:
4067 case R_IA64_PLTOFF64MSB:
4068 case R_IA64_PLTOFF64LSB:
4069 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4070 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4071 value -= gp_val;
4072 r = ia64_elf_install_value (hit_addr, value, r_type);
4073 break;
4075 case R_IA64_FPTR64I:
4076 case R_IA64_FPTR32MSB:
4077 case R_IA64_FPTR32LSB:
4078 case R_IA64_FPTR64MSB:
4079 case R_IA64_FPTR64LSB:
4080 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4081 if (dyn_i->want_fptr)
4083 if (!undef_weak_ref)
4084 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4086 if (!dyn_i->want_fptr || bfd_link_pie (info))
4088 long dynindx;
4089 unsigned int dyn_r_type = r_type;
4090 bfd_vma addend = rel->r_addend;
4092 /* Otherwise, we expect the dynamic linker to create
4093 the entry. */
4095 if (dyn_i->want_fptr)
4097 if (r_type == R_IA64_FPTR64I)
4099 /* We can't represent this without a dynamic symbol.
4100 Adjust the relocation to be against an output
4101 section symbol, which are always present in the
4102 dynamic symbol table. */
4103 /* ??? People shouldn't be doing non-pic code in
4104 shared libraries. Hork. */
4105 _bfd_error_handler
4106 (_("%B: linking non-pic code in a position independent executable"),
4107 input_bfd);
4108 ret_val = FALSE;
4109 continue;
4111 dynindx = 0;
4112 addend = value;
4113 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4115 else if (h)
4117 if (h->dynindx != -1)
4118 dynindx = h->dynindx;
4119 else
4120 dynindx = (_bfd_elf_link_lookup_local_dynindx
4121 (info, h->root.u.def.section->owner,
4122 global_sym_index (h)));
4123 value = 0;
4125 else
4127 dynindx = (_bfd_elf_link_lookup_local_dynindx
4128 (info, input_bfd, (long) r_symndx));
4129 value = 0;
4132 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4133 srel, rel->r_offset, dyn_r_type,
4134 dynindx, addend);
4137 r = ia64_elf_install_value (hit_addr, value, r_type);
4138 break;
4140 case R_IA64_LTOFF_FPTR22:
4141 case R_IA64_LTOFF_FPTR64I:
4142 case R_IA64_LTOFF_FPTR32MSB:
4143 case R_IA64_LTOFF_FPTR32LSB:
4144 case R_IA64_LTOFF_FPTR64MSB:
4145 case R_IA64_LTOFF_FPTR64LSB:
4147 long dynindx;
4149 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4150 if (dyn_i->want_fptr)
4152 BFD_ASSERT (h == NULL || h->dynindx == -1);
4153 if (!undef_weak_ref)
4154 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4155 dynindx = -1;
4157 else
4159 /* Otherwise, we expect the dynamic linker to create
4160 the entry. */
4161 if (h)
4163 if (h->dynindx != -1)
4164 dynindx = h->dynindx;
4165 else
4166 dynindx = (_bfd_elf_link_lookup_local_dynindx
4167 (info, h->root.u.def.section->owner,
4168 global_sym_index (h)));
4170 else
4171 dynindx = (_bfd_elf_link_lookup_local_dynindx
4172 (info, input_bfd, (long) r_symndx));
4173 value = 0;
4176 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4177 rel->r_addend, value, R_IA64_FPTRNNLSB);
4178 value -= gp_val;
4179 r = ia64_elf_install_value (hit_addr, value, r_type);
4181 break;
4183 case R_IA64_PCREL32MSB:
4184 case R_IA64_PCREL32LSB:
4185 case R_IA64_PCREL64MSB:
4186 case R_IA64_PCREL64LSB:
4187 /* Install a dynamic relocation for this reloc. */
4188 if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4190 BFD_ASSERT (srel != NULL);
4192 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4193 srel, rel->r_offset, r_type,
4194 h->dynindx, rel->r_addend);
4196 goto finish_pcrel;
4198 case R_IA64_PCREL21B:
4199 case R_IA64_PCREL60B:
4200 /* We should have created a PLT entry for any dynamic symbol. */
4201 dyn_i = NULL;
4202 if (h)
4203 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4205 if (dyn_i && dyn_i->want_plt2)
4207 /* Should have caught this earlier. */
4208 BFD_ASSERT (rel->r_addend == 0);
4210 value = (ia64_info->root.splt->output_section->vma
4211 + ia64_info->root.splt->output_offset
4212 + dyn_i->plt2_offset);
4214 else
4216 /* Since there's no PLT entry, Validate that this is
4217 locally defined. */
4218 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4220 /* If the symbol is undef_weak, we shouldn't be trying
4221 to call it. There's every chance that we'd wind up
4222 with an out-of-range fixup here. Don't bother setting
4223 any value at all. */
4224 if (undef_weak_ref)
4225 continue;
4227 goto finish_pcrel;
4229 case R_IA64_PCREL21BI:
4230 case R_IA64_PCREL21F:
4231 case R_IA64_PCREL21M:
4232 case R_IA64_PCREL22:
4233 case R_IA64_PCREL64I:
4234 /* The PCREL21BI reloc is specifically not intended for use with
4235 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4236 fixup code, and thus probably ought not be dynamic. The
4237 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4238 if (dynamic_symbol_p)
4240 const char *msg;
4242 if (r_type == R_IA64_PCREL21BI)
4243 /* xgettext:c-format */
4244 msg = _("%B: @internal branch to dynamic symbol %s");
4245 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4246 /* xgettext:c-format */
4247 msg = _("%B: speculation fixup to dynamic symbol %s");
4248 else
4249 /* xgettext:c-format */
4250 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4251 _bfd_error_handler (msg, input_bfd,
4252 h ? h->root.root.string
4253 : bfd_elf_sym_name (input_bfd,
4254 symtab_hdr,
4255 sym,
4256 sym_sec));
4257 ret_val = FALSE;
4258 continue;
4260 goto finish_pcrel;
4262 finish_pcrel:
4263 /* Make pc-relative. */
4264 value -= (input_section->output_section->vma
4265 + input_section->output_offset
4266 + rel->r_offset) & ~ (bfd_vma) 0x3;
4267 r = ia64_elf_install_value (hit_addr, value, r_type);
4268 break;
4270 case R_IA64_SEGREL32MSB:
4271 case R_IA64_SEGREL32LSB:
4272 case R_IA64_SEGREL64MSB:
4273 case R_IA64_SEGREL64LSB:
4275 /* Find the segment that contains the output_section. */
4276 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4277 (output_bfd, input_section->output_section);
4279 if (p == NULL)
4281 r = bfd_reloc_notsupported;
4283 else
4285 /* The VMA of the segment is the vaddr of the associated
4286 program header. */
4287 if (value > p->p_vaddr)
4288 value -= p->p_vaddr;
4289 else
4290 value = 0;
4291 r = ia64_elf_install_value (hit_addr, value, r_type);
4293 break;
4296 case R_IA64_SECREL32MSB:
4297 case R_IA64_SECREL32LSB:
4298 case R_IA64_SECREL64MSB:
4299 case R_IA64_SECREL64LSB:
4300 /* Make output-section relative to section where the symbol
4301 is defined. PR 475 */
4302 if (sym_sec)
4303 value -= sym_sec->output_section->vma;
4304 r = ia64_elf_install_value (hit_addr, value, r_type);
4305 break;
4307 case R_IA64_IPLTMSB:
4308 case R_IA64_IPLTLSB:
4309 /* Install a dynamic relocation for this reloc. */
4310 if ((dynamic_symbol_p || bfd_link_pic (info))
4311 && (input_section->flags & SEC_ALLOC) != 0)
4313 BFD_ASSERT (srel != NULL);
4315 /* If we don't need dynamic symbol lookup, install two
4316 RELATIVE relocations. */
4317 if (!dynamic_symbol_p)
4319 unsigned int dyn_r_type;
4321 if (r_type == R_IA64_IPLTMSB)
4322 dyn_r_type = R_IA64_REL64MSB;
4323 else
4324 dyn_r_type = R_IA64_REL64LSB;
4326 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4327 input_section,
4328 srel, rel->r_offset,
4329 dyn_r_type, 0, value);
4330 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4331 input_section,
4332 srel, rel->r_offset + 8,
4333 dyn_r_type, 0, gp_val);
4335 else
4336 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4337 srel, rel->r_offset, r_type,
4338 h->dynindx, rel->r_addend);
4341 if (r_type == R_IA64_IPLTMSB)
4342 r_type = R_IA64_DIR64MSB;
4343 else
4344 r_type = R_IA64_DIR64LSB;
4345 ia64_elf_install_value (hit_addr, value, r_type);
4346 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4347 break;
4349 case R_IA64_TPREL14:
4350 case R_IA64_TPREL22:
4351 case R_IA64_TPREL64I:
4352 if (elf_hash_table (info)->tls_sec == NULL)
4353 goto missing_tls_sec;
4354 value -= elfNN_ia64_tprel_base (info);
4355 r = ia64_elf_install_value (hit_addr, value, r_type);
4356 break;
4358 case R_IA64_DTPREL14:
4359 case R_IA64_DTPREL22:
4360 case R_IA64_DTPREL64I:
4361 case R_IA64_DTPREL32LSB:
4362 case R_IA64_DTPREL32MSB:
4363 case R_IA64_DTPREL64LSB:
4364 case R_IA64_DTPREL64MSB:
4365 if (elf_hash_table (info)->tls_sec == NULL)
4366 goto missing_tls_sec;
4367 value -= elfNN_ia64_dtprel_base (info);
4368 r = ia64_elf_install_value (hit_addr, value, r_type);
4369 break;
4371 case R_IA64_LTOFF_TPREL22:
4372 case R_IA64_LTOFF_DTPMOD22:
4373 case R_IA64_LTOFF_DTPREL22:
4375 int got_r_type;
4376 long dynindx = h ? h->dynindx : -1;
4377 bfd_vma r_addend = rel->r_addend;
4379 switch (r_type)
4381 default:
4382 case R_IA64_LTOFF_TPREL22:
4383 if (!dynamic_symbol_p)
4385 if (elf_hash_table (info)->tls_sec == NULL)
4386 goto missing_tls_sec;
4387 if (!bfd_link_pic (info))
4388 value -= elfNN_ia64_tprel_base (info);
4389 else
4391 r_addend += value - elfNN_ia64_dtprel_base (info);
4392 dynindx = 0;
4395 got_r_type = R_IA64_TPREL64LSB;
4396 break;
4397 case R_IA64_LTOFF_DTPMOD22:
4398 if (!dynamic_symbol_p && !bfd_link_pic (info))
4399 value = 1;
4400 got_r_type = R_IA64_DTPMOD64LSB;
4401 break;
4402 case R_IA64_LTOFF_DTPREL22:
4403 if (!dynamic_symbol_p)
4405 if (elf_hash_table (info)->tls_sec == NULL)
4406 goto missing_tls_sec;
4407 value -= elfNN_ia64_dtprel_base (info);
4409 got_r_type = R_IA64_DTPRELNNLSB;
4410 break;
4412 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4413 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4414 value, got_r_type);
4415 value -= gp_val;
4416 r = ia64_elf_install_value (hit_addr, value, r_type);
4418 break;
4420 default:
4421 r = bfd_reloc_notsupported;
4422 break;
4425 switch (r)
4427 case bfd_reloc_ok:
4428 break;
4430 case bfd_reloc_undefined:
4431 /* This can happen for global table relative relocs if
4432 __gp is undefined. This is a panic situation so we
4433 don't try to continue. */
4434 (*info->callbacks->undefined_symbol)
4435 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4436 return FALSE;
4438 case bfd_reloc_notsupported:
4440 const char *name;
4442 if (h)
4443 name = h->root.root.string;
4444 else
4445 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4446 sym_sec);
4447 (*info->callbacks->warning) (info, _("unsupported reloc"),
4448 name, input_bfd,
4449 input_section, rel->r_offset);
4450 ret_val = FALSE;
4452 break;
4454 case bfd_reloc_dangerous:
4455 case bfd_reloc_outofrange:
4456 case bfd_reloc_overflow:
4457 default:
4458 missing_tls_sec:
4460 const char *name;
4462 if (h)
4463 name = h->root.root.string;
4464 else
4465 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4466 sym_sec);
4468 switch (r_type)
4470 case R_IA64_TPREL14:
4471 case R_IA64_TPREL22:
4472 case R_IA64_TPREL64I:
4473 case R_IA64_DTPREL14:
4474 case R_IA64_DTPREL22:
4475 case R_IA64_DTPREL64I:
4476 case R_IA64_DTPREL32LSB:
4477 case R_IA64_DTPREL32MSB:
4478 case R_IA64_DTPREL64LSB:
4479 case R_IA64_DTPREL64MSB:
4480 case R_IA64_LTOFF_TPREL22:
4481 case R_IA64_LTOFF_DTPMOD22:
4482 case R_IA64_LTOFF_DTPREL22:
4483 _bfd_error_handler
4484 /* xgettext:c-format */
4485 (_("%B: missing TLS section for relocation %s against `%s'"
4486 " at %#Lx in section `%A'."),
4487 input_bfd, howto->name, name,
4488 rel->r_offset, input_section);
4489 break;
4491 case R_IA64_PCREL21B:
4492 case R_IA64_PCREL21BI:
4493 case R_IA64_PCREL21M:
4494 case R_IA64_PCREL21F:
4495 if (is_elf_hash_table (info->hash))
4497 /* Relaxtion is always performed for ELF output.
4498 Overflow failures for those relocations mean
4499 that the section is too big to relax. */
4500 _bfd_error_handler
4501 /* xgettext:c-format */
4502 (_("%B: Can't relax br (%s) to `%s' at %#Lx"
4503 " in section `%A' with size %#Lx (> 0x1000000)."),
4504 input_bfd, howto->name, name, rel->r_offset,
4505 input_section, input_section->size);
4506 break;
4508 /* Fall through. */
4509 default:
4510 (*info->callbacks->reloc_overflow) (info,
4511 &h->root,
4512 name,
4513 howto->name,
4514 (bfd_vma) 0,
4515 input_bfd,
4516 input_section,
4517 rel->r_offset);
4518 break;
4521 ret_val = FALSE;
4523 break;
4527 return ret_val;
4530 static bfd_boolean
4531 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4532 struct bfd_link_info *info,
4533 struct elf_link_hash_entry *h,
4534 Elf_Internal_Sym *sym)
4536 struct elfNN_ia64_link_hash_table *ia64_info;
4537 struct elfNN_ia64_dyn_sym_info *dyn_i;
4539 ia64_info = elfNN_ia64_hash_table (info);
4540 if (ia64_info == NULL)
4541 return FALSE;
4543 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4545 /* Fill in the PLT data, if required. */
4546 if (dyn_i && dyn_i->want_plt)
4548 Elf_Internal_Rela outrel;
4549 bfd_byte *loc;
4550 asection *plt_sec;
4551 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4553 gp_val = _bfd_get_gp_value (output_bfd);
4555 /* Initialize the minimal PLT entry. */
4557 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4558 plt_sec = ia64_info->root.splt;
4559 loc = plt_sec->contents + dyn_i->plt_offset;
4561 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4562 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4563 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4565 plt_addr = (plt_sec->output_section->vma
4566 + plt_sec->output_offset
4567 + dyn_i->plt_offset);
4568 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4570 /* Initialize the FULL PLT entry, if needed. */
4571 if (dyn_i->want_plt2)
4573 loc = plt_sec->contents + dyn_i->plt2_offset;
4575 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4576 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4578 /* Mark the symbol as undefined, rather than as defined in the
4579 plt section. Leave the value alone. */
4580 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4581 first place. But perhaps elflink.c did some for us. */
4582 if (!h->def_regular)
4583 sym->st_shndx = SHN_UNDEF;
4586 /* Create the dynamic relocation. */
4587 outrel.r_offset = pltoff_addr;
4588 if (bfd_little_endian (output_bfd))
4589 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4590 else
4591 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4592 outrel.r_addend = 0;
4594 /* This is fun. In the .IA_64.pltoff section, we've got entries
4595 that correspond both to real PLT entries, and those that
4596 happened to resolve to local symbols but need to be created
4597 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4598 relocations for the real PLT should come at the end of the
4599 section, so that they can be indexed by plt entry at runtime.
4601 We emitted all of the relocations for the non-PLT @pltoff
4602 entries during relocate_section. So we can consider the
4603 existing sec->reloc_count to be the base of the array of
4604 PLT relocations. */
4606 loc = ia64_info->rel_pltoff_sec->contents;
4607 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4608 * sizeof (ElfNN_External_Rela));
4609 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4612 /* Mark some specially defined symbols as absolute. */
4613 if (h == ia64_info->root.hdynamic
4614 || h == ia64_info->root.hgot
4615 || h == ia64_info->root.hplt)
4616 sym->st_shndx = SHN_ABS;
4618 return TRUE;
4621 static bfd_boolean
4622 elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4623 struct bfd_link_info *info)
4625 struct elfNN_ia64_link_hash_table *ia64_info;
4626 bfd *dynobj;
4628 ia64_info = elfNN_ia64_hash_table (info);
4629 if (ia64_info == NULL)
4630 return FALSE;
4632 dynobj = ia64_info->root.dynobj;
4634 if (ia64_info->root.dynamic_sections_created)
4636 ElfNN_External_Dyn *dyncon, *dynconend;
4637 asection *sdyn, *sgotplt;
4638 bfd_vma gp_val;
4640 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4641 sgotplt = ia64_info->root.sgotplt;
4642 BFD_ASSERT (sdyn != NULL);
4643 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4644 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4646 gp_val = _bfd_get_gp_value (abfd);
4648 for (; dyncon < dynconend; dyncon++)
4650 Elf_Internal_Dyn dyn;
4652 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4654 switch (dyn.d_tag)
4656 case DT_PLTGOT:
4657 dyn.d_un.d_ptr = gp_val;
4658 break;
4660 case DT_PLTRELSZ:
4661 dyn.d_un.d_val = (ia64_info->minplt_entries
4662 * sizeof (ElfNN_External_Rela));
4663 break;
4665 case DT_JMPREL:
4666 /* See the comment above in finish_dynamic_symbol. */
4667 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4668 + ia64_info->rel_pltoff_sec->output_offset
4669 + (ia64_info->rel_pltoff_sec->reloc_count
4670 * sizeof (ElfNN_External_Rela)));
4671 break;
4673 case DT_IA_64_PLT_RESERVE:
4674 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4675 + sgotplt->output_offset);
4676 break;
4679 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4682 /* Initialize the PLT0 entry. */
4683 if (ia64_info->root.splt)
4685 bfd_byte *loc = ia64_info->root.splt->contents;
4686 bfd_vma pltres;
4688 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4690 pltres = (sgotplt->output_section->vma
4691 + sgotplt->output_offset
4692 - gp_val);
4694 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4698 return TRUE;
4701 /* ELF file flag handling: */
4703 /* Function to keep IA-64 specific file flags. */
4704 static bfd_boolean
4705 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4707 BFD_ASSERT (!elf_flags_init (abfd)
4708 || elf_elfheader (abfd)->e_flags == flags);
4710 elf_elfheader (abfd)->e_flags = flags;
4711 elf_flags_init (abfd) = TRUE;
4712 return TRUE;
4715 /* Merge backend specific data from an object file to the output
4716 object file when linking. */
4717 static bfd_boolean
4718 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4720 bfd *obfd = info->output_bfd;
4721 flagword out_flags;
4722 flagword in_flags;
4723 bfd_boolean ok = TRUE;
4725 /* Don't even pretend to support mixed-format linking. */
4726 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4727 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4728 return FALSE;
4730 in_flags = elf_elfheader (ibfd)->e_flags;
4731 out_flags = elf_elfheader (obfd)->e_flags;
4733 if (! elf_flags_init (obfd))
4735 elf_flags_init (obfd) = TRUE;
4736 elf_elfheader (obfd)->e_flags = in_flags;
4738 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4739 && bfd_get_arch_info (obfd)->the_default)
4741 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4742 bfd_get_mach (ibfd));
4745 return TRUE;
4748 /* Check flag compatibility. */
4749 if (in_flags == out_flags)
4750 return TRUE;
4752 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4753 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4754 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4756 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4758 _bfd_error_handler
4759 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4760 ibfd);
4762 bfd_set_error (bfd_error_bad_value);
4763 ok = FALSE;
4765 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4767 _bfd_error_handler
4768 (_("%B: linking big-endian files with little-endian files"),
4769 ibfd);
4771 bfd_set_error (bfd_error_bad_value);
4772 ok = FALSE;
4774 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4776 _bfd_error_handler
4777 (_("%B: linking 64-bit files with 32-bit files"),
4778 ibfd);
4780 bfd_set_error (bfd_error_bad_value);
4781 ok = FALSE;
4783 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4785 _bfd_error_handler
4786 (_("%B: linking constant-gp files with non-constant-gp files"),
4787 ibfd);
4789 bfd_set_error (bfd_error_bad_value);
4790 ok = FALSE;
4792 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4793 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4795 _bfd_error_handler
4796 (_("%B: linking auto-pic files with non-auto-pic files"),
4797 ibfd);
4799 bfd_set_error (bfd_error_bad_value);
4800 ok = FALSE;
4803 return ok;
4806 static bfd_boolean
4807 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4809 FILE *file = (FILE *) ptr;
4810 flagword flags = elf_elfheader (abfd)->e_flags;
4812 BFD_ASSERT (abfd != NULL && ptr != NULL);
4814 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4815 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4816 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4817 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4818 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4819 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4820 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4821 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4822 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4824 _bfd_elf_print_private_bfd_data (abfd, ptr);
4825 return TRUE;
4828 static enum elf_reloc_type_class
4829 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4830 const asection *rel_sec ATTRIBUTE_UNUSED,
4831 const Elf_Internal_Rela *rela)
4833 switch ((int) ELFNN_R_TYPE (rela->r_info))
4835 case R_IA64_REL32MSB:
4836 case R_IA64_REL32LSB:
4837 case R_IA64_REL64MSB:
4838 case R_IA64_REL64LSB:
4839 return reloc_class_relative;
4840 case R_IA64_IPLTMSB:
4841 case R_IA64_IPLTLSB:
4842 return reloc_class_plt;
4843 case R_IA64_COPY:
4844 return reloc_class_copy;
4845 default:
4846 return reloc_class_normal;
4850 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4852 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4853 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4854 { NULL, 0, 0, 0, 0 }
4857 static bfd_boolean
4858 elfNN_ia64_object_p (bfd *abfd)
4860 asection *sec;
4861 asection *group, *unwi, *unw;
4862 flagword flags;
4863 const char *name;
4864 char *unwi_name, *unw_name;
4865 bfd_size_type amt;
4867 if (abfd->flags & DYNAMIC)
4868 return TRUE;
4870 /* Flags for fake group section. */
4871 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4872 | SEC_EXCLUDE);
4874 /* We add a fake section group for each .gnu.linkonce.t.* section,
4875 which isn't in a section group, and its unwind sections. */
4876 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4878 if (elf_sec_group (sec) == NULL
4879 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4880 == (SEC_LINK_ONCE | SEC_CODE))
4881 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4883 name = sec->name + 16;
4885 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4886 unwi_name = bfd_alloc (abfd, amt);
4887 if (!unwi_name)
4888 return FALSE;
4890 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4891 unwi = bfd_get_section_by_name (abfd, unwi_name);
4893 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4894 unw_name = bfd_alloc (abfd, amt);
4895 if (!unw_name)
4896 return FALSE;
4898 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4899 unw = bfd_get_section_by_name (abfd, unw_name);
4901 /* We need to create a fake group section for it and its
4902 unwind sections. */
4903 group = bfd_make_section_anyway_with_flags (abfd, name,
4904 flags);
4905 if (group == NULL)
4906 return FALSE;
4908 /* Move the fake group section to the beginning. */
4909 bfd_section_list_remove (abfd, group);
4910 bfd_section_list_prepend (abfd, group);
4912 elf_next_in_group (group) = sec;
4914 elf_group_name (sec) = name;
4915 elf_next_in_group (sec) = sec;
4916 elf_sec_group (sec) = group;
4918 if (unwi)
4920 elf_group_name (unwi) = name;
4921 elf_next_in_group (unwi) = sec;
4922 elf_next_in_group (sec) = unwi;
4923 elf_sec_group (unwi) = group;
4926 if (unw)
4928 elf_group_name (unw) = name;
4929 if (unwi)
4931 elf_next_in_group (unw) = elf_next_in_group (unwi);
4932 elf_next_in_group (unwi) = unw;
4934 else
4936 elf_next_in_group (unw) = sec;
4937 elf_next_in_group (sec) = unw;
4939 elf_sec_group (unw) = group;
4942 /* Fake SHT_GROUP section header. */
4943 elf_section_data (group)->this_hdr.bfd_section = group;
4944 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4947 return TRUE;
4950 static bfd_boolean
4951 elfNN_ia64_hpux_vec (const bfd_target *vec)
4953 extern const bfd_target ia64_elfNN_hpux_be_vec;
4954 return (vec == &ia64_elfNN_hpux_be_vec);
4957 static void
4958 elfNN_hpux_post_process_headers (bfd *abfd,
4959 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4961 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4963 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4964 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4967 static bfd_boolean
4968 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4969 asection *sec, int *retval)
4971 if (bfd_is_com_section (sec))
4973 *retval = SHN_IA_64_ANSI_COMMON;
4974 return TRUE;
4976 return FALSE;
4979 static void
4980 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4981 asymbol *asym)
4983 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4985 switch (elfsym->internal_elf_sym.st_shndx)
4987 case SHN_IA_64_ANSI_COMMON:
4988 asym->section = bfd_com_section_ptr;
4989 asym->value = elfsym->internal_elf_sym.st_size;
4990 asym->flags &= ~BSF_GLOBAL;
4991 break;
4995 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4996 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4997 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4998 #define TARGET_BIG_NAME "elfNN-ia64-big"
4999 #define ELF_ARCH bfd_arch_ia64
5000 #define ELF_TARGET_ID IA64_ELF_DATA
5001 #define ELF_MACHINE_CODE EM_IA_64
5002 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5003 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5004 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5005 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5007 #define elf_backend_section_from_shdr \
5008 elfNN_ia64_section_from_shdr
5009 #define elf_backend_section_flags \
5010 elfNN_ia64_section_flags
5011 #define elf_backend_fake_sections \
5012 elfNN_ia64_fake_sections
5013 #define elf_backend_final_write_processing \
5014 elfNN_ia64_final_write_processing
5015 #define elf_backend_add_symbol_hook \
5016 elfNN_ia64_add_symbol_hook
5017 #define elf_backend_additional_program_headers \
5018 elfNN_ia64_additional_program_headers
5019 #define elf_backend_modify_segment_map \
5020 elfNN_ia64_modify_segment_map
5021 #define elf_backend_modify_program_headers \
5022 elfNN_ia64_modify_program_headers
5023 #define elf_info_to_howto \
5024 elfNN_ia64_info_to_howto
5026 #define bfd_elfNN_bfd_reloc_type_lookup \
5027 ia64_elf_reloc_type_lookup
5028 #define bfd_elfNN_bfd_reloc_name_lookup \
5029 ia64_elf_reloc_name_lookup
5030 #define bfd_elfNN_bfd_is_local_label_name \
5031 elfNN_ia64_is_local_label_name
5032 #define bfd_elfNN_bfd_relax_section \
5033 elfNN_ia64_relax_section
5035 #define elf_backend_object_p \
5036 elfNN_ia64_object_p
5038 /* Stuff for the BFD linker: */
5039 #define bfd_elfNN_bfd_link_hash_table_create \
5040 elfNN_ia64_hash_table_create
5041 #define elf_backend_create_dynamic_sections \
5042 elfNN_ia64_create_dynamic_sections
5043 #define elf_backend_check_relocs \
5044 elfNN_ia64_check_relocs
5045 #define elf_backend_adjust_dynamic_symbol \
5046 elfNN_ia64_adjust_dynamic_symbol
5047 #define elf_backend_size_dynamic_sections \
5048 elfNN_ia64_size_dynamic_sections
5049 #define elf_backend_omit_section_dynsym \
5050 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5051 #define elf_backend_relocate_section \
5052 elfNN_ia64_relocate_section
5053 #define elf_backend_finish_dynamic_symbol \
5054 elfNN_ia64_finish_dynamic_symbol
5055 #define elf_backend_finish_dynamic_sections \
5056 elfNN_ia64_finish_dynamic_sections
5057 #define bfd_elfNN_bfd_final_link \
5058 elfNN_ia64_final_link
5060 #define bfd_elfNN_bfd_merge_private_bfd_data \
5061 elfNN_ia64_merge_private_bfd_data
5062 #define bfd_elfNN_bfd_set_private_flags \
5063 elfNN_ia64_set_private_flags
5064 #define bfd_elfNN_bfd_print_private_bfd_data \
5065 elfNN_ia64_print_private_bfd_data
5067 #define elf_backend_plt_readonly 1
5068 #define elf_backend_want_plt_sym 0
5069 #define elf_backend_plt_alignment 5
5070 #define elf_backend_got_header_size 0
5071 #define elf_backend_want_got_plt 1
5072 #define elf_backend_may_use_rel_p 1
5073 #define elf_backend_may_use_rela_p 1
5074 #define elf_backend_default_use_rela_p 1
5075 #define elf_backend_want_dynbss 0
5076 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5077 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5078 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5079 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5080 #define elf_backend_rela_normal 1
5081 #define elf_backend_dtrel_excludes_plt 1
5082 #define elf_backend_special_sections elfNN_ia64_special_sections
5083 #define elf_backend_default_execstack 0
5085 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5086 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5087 We don't want to flood users with so many error messages. We turn
5088 off the warning for now. It will be turned on later when the Intel
5089 compiler is fixed. */
5090 #define elf_backend_link_order_error_handler NULL
5092 #include "elfNN-target.h"
5094 /* HPUX-specific vectors. */
5096 #undef TARGET_LITTLE_SYM
5097 #undef TARGET_LITTLE_NAME
5098 #undef TARGET_BIG_SYM
5099 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5100 #undef TARGET_BIG_NAME
5101 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5103 /* These are HP-UX specific functions. */
5105 #undef elf_backend_post_process_headers
5106 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5108 #undef elf_backend_section_from_bfd_section
5109 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5111 #undef elf_backend_symbol_processing
5112 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5114 #undef elf_backend_want_p_paddr_set_to_zero
5115 #define elf_backend_want_p_paddr_set_to_zero 1
5117 #undef ELF_COMMONPAGESIZE
5118 #undef ELF_OSABI
5119 #define ELF_OSABI ELFOSABI_HPUX
5121 #undef elfNN_bed
5122 #define elfNN_bed elfNN_ia64_hpux_bed
5124 #include "elfNN-target.h"