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. */
26 #include "opcode/ia64.h"
30 #include "bfd_stdint.h"
31 #include "elfxx-ia64.h"
36 #define LOG_SECTION_ALIGN 3
40 #define LOG_SECTION_ALIGN 2
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. */
57 bfd_vma pltoff_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
;
76 /* Is this reloc against readonly section? */
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
105 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
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. */
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. */
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. */
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
;
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 *),
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. */
201 elfNN_ia64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
203 Elf_Internal_Rela
*elf_reloc
)
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
);
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
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. */
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)
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
;
319 elfNN_ia64_relax_section (bfd
*abfd
, asection
*sec
,
320 struct bfd_link_info
*link_info
,
325 struct one_fixup
*next
;
331 Elf_Internal_Shdr
*symtab_hdr
;
332 Elf_Internal_Rela
*internal_relocs
;
333 Elf_Internal_Rela
*irel
, *irelend
;
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
;
345 /* Assume we're not going to change any sizes, and we'll only need
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
))
357 /* Nothing to do if there are no relocations or there is no need for
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
))
365 ia64_info
= elfNN_ia64_hash_table (link_info
);
366 if (ia64_info
== NULL
)
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
)
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
;
385 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
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
;
396 bfd_boolean is_branch
;
397 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
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)
409 skip_relax_pass_0
= FALSE
;
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
;
425 /* Update max_short_sec/min_short_sec. */
427 case R_IA64_LTOFF22X
:
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
;
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. */
452 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
454 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
455 symtab_hdr
->sh_info
, 0,
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
;
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
);
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
)
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
))
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
)
517 tsec
= h
->root
.u
.def
.section
;
518 toff
= h
->root
.u
.def
.value
;
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
,
549 if (symtype
!= STT_SECTION
)
550 toff
+= irel
->r_addend
;
553 toff
+= irel
->r_addend
;
555 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
557 roff
= irel
->r_offset
;
561 bfd_signed_vma offset
;
563 reladdr
= (sec
->output_section
->vma
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
574 if (tsec
== ia64_info
->root
.splt
)
575 offset
= -0x1000000 + 32;
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
);
589 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
592 /* If the original relocation offset points to slot
593 1, change it to slot 2. */
594 if ((irel
->r_offset
& 3) == 1)
600 else if (r_type
== R_IA64_PCREL60B
)
602 else if (ia64_elf_relax_br (contents
, roff
))
605 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
608 /* Make the relocation offset point to slot 1. */
609 irel
->r_offset
= (irel
->r_offset
& ~((bfd_vma
) 0x3)) + 1;
613 /* We can't put a trampoline in a .init/.fini section. Issue
615 if (strcmp (sec
->output_section
->name
, ".init") == 0
616 || strcmp (sec
->output_section
->name
, ".fini") == 0)
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
);
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
631 if (tsec
== sec
&& toff
> roff
)
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
)
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. */
647 if (tsec
== ia64_info
->root
.splt
)
648 size
= sizeof (plt_full_entry
);
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
657 offset
= trampoff
- (roff
& (bfd_vma
) -4);
658 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
661 amt
= trampoff
+ size
;
662 contents
= (bfd_byte
*) bfd_realloc (contents
, amt
);
663 if (contents
== NULL
)
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
),
674 irel
->r_offset
= trampoff
;
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
),
683 irel
->r_addend
-= 16;
684 irel
->r_offset
= trampoff
+ 2;
688 memcpy (contents
+ trampoff
, oor_brl
, size
);
689 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
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
));
702 f
->trampoff
= trampoff
;
707 /* If trampoline is out of range, there is nothing we
709 offset
= f
->trampoff
- (roff
& (bfd_vma
) -4);
710 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
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
)
722 changed_contents
= TRUE
;
723 changed_relocs
= TRUE
;
730 bfd
*obfd
= sec
->output_section
->owner
;
731 gp
= _bfd_get_gp_value (obfd
);
734 if (!elfNN_ia64_choose_gp (obfd
, link_info
, FALSE
))
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)
745 if (r_type
== R_IA64_GPREL22
)
746 elfNN_ia64_update_short_info (tsec
->output_section
,
747 tsec
->output_offset
+ toff
,
749 else if (r_type
== R_IA64_LTOFF22X
)
751 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
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
,
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. */
782 struct one_fixup
*f
= fixups
;
783 fixups
= fixups
->next
;
788 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
790 if (! link_info
->keep_memory
)
794 /* Cache the symbols for elf_link_input_bfd. */
795 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
800 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
802 if (!changed_contents
&& !link_info
->keep_memory
)
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
)
814 free (internal_relocs
);
816 elf_section_data (sec
)->relocs
= internal_relocs
;
821 struct elfNN_ia64_allocate_data data
;
822 data
.info
= link_info
;
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
,
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
;
856 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
859 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
861 if (internal_relocs
!= NULL
862 && elf_section_data (sec
)->relocs
!= internal_relocs
)
863 free (internal_relocs
);
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
))
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
888 elfNN_ia64_section_from_shdr (bfd
*abfd
,
889 Elf_Internal_Shdr
*hdr
,
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
:
905 if (strcmp (name
, ELF_STRING_ia64_archext
) != 0)
913 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
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
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
;
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. */
938 elfNN_ia64_fake_sections (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
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
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
;
986 /* The final processing done just before writing out an IA-64 ELF
990 elfNN_ia64_final_write_processing (bfd
*abfd
,
991 bfd_boolean linker ATTRIBUTE_UNUSED
)
993 Elf_Internal_Shdr
*hdr
;
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
1006 hdr
->sh_info
= hdr
->sh_link
;
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. */
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
,
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");
1048 scomm
= bfd_make_section_with_flags (abfd
, ".scommon",
1051 | SEC_LINKER_CREATED
));
1057 *valp
= sym
->st_size
;
1063 /* Return the number of additional phdrs we will need. */
1066 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1067 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
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
))
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
))
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
;
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
)
1103 m
= ((struct elf_segment_map
*)
1104 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1108 m
->p_type
= PT_IA_64_ARCHEXT
;
1112 /* We want to put it after the PHDR and INTERP segments. */
1113 pm
= &elf_seg_map (abfd
);
1115 && ((*pm
)->p_type
== PT_PHDR
1116 || (*pm
)->p_type
== PT_INTERP
))
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
)
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
)
1138 /* Look through all sections in the unwind segment
1139 for a match since there may be multiple sections
1141 for (i
= m
->count
- 1; i
>= 0; --i
)
1142 if (m
->sections
[i
] == s
)
1151 m
= ((struct elf_segment_map
*)
1152 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1156 m
->p_type
= PT_IA_64_UNWIND
;
1161 /* We want to put it last. */
1162 pm
= &elf_seg_map (abfd
);
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. */
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
)
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
;
1205 order
= order
->next
;
1214 /* According to the Tahoe assembler spec, all labels starting with a
1218 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1221 return name
[0] == '.';
1224 /* Should we do dynamic things to this symbol? */
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
,
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
1248 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
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
,
1260 ret
->sorted_count
= 0;
1262 return (struct bfd_hash_entry
*) ret
;
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
)
1287 /* Copy over the got and plt data. This would have been done
1290 if (ind
->info
!= NULL
)
1292 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1298 dir
->info
= ind
->info
;
1299 dir
->count
= ind
->count
;
1300 dir
->sorted_count
= ind
->sorted_count
;
1301 dir
->size
= ind
->size
;
1305 ind
->sorted_count
= 0;
1308 /* Fix up the dyn_sym_info pointers to the global symbol. */
1309 for (count
= dir
->count
, dyn_i
= dir
->info
;
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;
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
;
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
;
1346 dyn_i
->want_plt2
= 0;
1347 dyn_i
->want_plt
= 0;
1351 /* Compute a hash of a local hash entry. */
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. */
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. */
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
;
1389 entry
->sorted_count
= 0;
1396 /* Free the local elfNN_ia64_dyn_sym_info array. */
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
;
1410 entry
->sorted_count
= 0;
1417 /* Destroy IA-64 linker hash table. */
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
));
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
),
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
);
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 *);
1481 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry
*xentry
,
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
;
1491 for (count
= entry
->count
, dyn_i
= entry
->info
;
1494 if (! (*data
->func
) (dyn_i
, data
->data
))
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
;
1509 for (count
= entry
->count
, dyn_i
= entry
->info
;
1512 if (! (*data
->func
) (dyn_i
, data
->data
))
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 *),
1522 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
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
);
1534 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1535 struct bfd_link_info
*info
)
1537 struct elfNN_ia64_link_hash_table
*ia64_info
;
1540 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1543 ia64_info
= elfNN_ia64_hash_table (info
);
1544 if (ia64_info
== NULL
)
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))
1556 if (!get_pltoff (abfd
, info
, ia64_info
))
1559 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1560 (SEC_ALLOC
| SEC_LOAD
1563 | SEC_LINKER_CREATED
1566 || !bfd_set_section_alignment (abfd
, s
, LOG_SECTION_ALIGN
))
1568 ia64_info
->rel_pltoff_sec
= s
;
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
,
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
));
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
);
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
));
1601 memset (ret
, 0, sizeof (*ret
));
1603 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1609 /* Used to sort elfNN_ia64_dyn_sym_info array. */
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. */
1625 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
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
;
1641 /* For duplicates, make sure that GOT_OFFSET is valid. */
1642 if (got_offset
== (bfd_vma
) -1)
1643 got_offset
= info
[i
].got_offset
;
1646 got_offset
= info
[i
].got_offset
;
1650 /* We may move a block of elements to here. */
1653 /* Remove duplicates. */
1658 /* For duplicates, make sure that the kept one has a valid
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
1671 for (src
= i
+ 1; src
< count
; src
++)
1673 if (info
[src
].addend
!= curr
)
1675 /* For duplicates, make sure that GOT_OFFSET is
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
;
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
;
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
;
1709 got_offset
= info
[dupes
].got_offset
;
1713 /* How much to move. */
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
)
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
1733 BFD_ASSERT (curr
== prev
);
1734 if (got_offset
!= (bfd_vma
) -1)
1735 info
[diff
- 1].got_offset
= got_offset
;
1739 /* Find the next duplicate. Track the current valid
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
;
1748 /* For duplicates, make sure that GOT_OFFSET
1750 if (got_offset
== (bfd_vma
) -1)
1751 got_offset
= info
[dupes
].got_offset
;
1754 got_offset
= info
[dupes
].got_offset
;
1759 len
= diff
- src
+ 1;
1764 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1773 /* When we get here, either there is no duplicate at all or
1774 the only duplicate is the last element. */
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
;
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;
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
;
1827 struct elfNN_ia64_local_hash_entry
*loc_h
;
1829 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1832 BFD_ASSERT (!create
);
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
;
1843 sorted_count
= *sorted_count_p
;
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
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
);
1867 /* Do a quick check for the last inserted entry. */
1868 dyn_i
= info
+ count
- 1;
1869 if (dyn_i
->addend
== addend
)
1877 /* It is the very first element. We create the array of size
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
1888 amt
= size
* sizeof (*info
);
1889 info
= bfd_realloc (info
, amt
);
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. */
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
);
1918 *sorted_count_p
= count
;
1921 /* Free unused memory. */
1924 amt
= count
* sizeof (*info
);
1925 info
= bfd_malloc (amt
);
1928 memcpy (info
, *info_p
, amt
);
1935 key
.addend
= addend
;
1936 dyn_i
= bsearch (&key
, info
, count
,
1937 sizeof (*info
), addend_compare
);
1944 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1945 struct elfNN_ia64_link_hash_table
*ia64_info
)
1950 got
= ia64_info
->root
.sgot
;
1955 dynobj
= ia64_info
->root
.dynobj
;
1957 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1958 if (!_bfd_elf_create_got_section (dynobj
, info
))
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))
1967 flags
= bfd_get_section_flags (abfd
, got
);
1968 if (! bfd_set_section_flags (abfd
, got
, SEC_SMALL_DATA
| flags
))
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. */
1981 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1982 struct elfNN_ia64_link_hash_table
*ia64_info
)
1987 fptr
= ia64_info
->fptr_sec
;
1990 dynobj
= ia64_info
->root
.dynobj
;
1992 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1994 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
1999 | (bfd_link_pie (info
)
2001 | SEC_LINKER_CREATED
));
2003 || !bfd_set_section_alignment (abfd
, fptr
, 4))
2009 ia64_info
->fptr_sec
= fptr
;
2011 if (bfd_link_pie (info
))
2014 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2015 (SEC_ALLOC
| SEC_LOAD
2018 | SEC_LINKER_CREATED
2020 if (fptr_rel
== NULL
2021 || !bfd_set_section_alignment (abfd
, fptr_rel
,
2028 ia64_info
->rel_fptr_sec
= fptr_rel
;
2036 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2037 struct elfNN_ia64_link_hash_table
*ia64_info
)
2042 pltoff
= ia64_info
->pltoff_sec
;
2045 dynobj
= ia64_info
->root
.dynobj
;
2047 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2049 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2050 ELF_STRING_ia64_pltoff
,
2056 | SEC_LINKER_CREATED
));
2058 || !bfd_set_section_alignment (abfd
, pltoff
, 4))
2064 ia64_info
->pltoff_sec
= pltoff
;
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
;
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
)
2085 dynobj
= ia64_info
->root
.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
2096 | SEC_LINKER_CREATED
2099 || !bfd_set_section_alignment (dynobj
, srel
,
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
)
2119 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2120 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2124 rent
->next
= dyn_i
->reloc_entries
;
2128 dyn_i
->reloc_entries
= rent
;
2130 rent
->reltext
= reltext
;
2137 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
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
;
2154 NEED_LTOFF_FPTR
= 128,
2160 struct elf_link_hash_entry
*h
;
2161 unsigned long r_symndx
;
2162 bfd_boolean maybe_dynamic
;
2164 if (bfd_link_relocatable (info
))
2167 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2168 ia64_info
= elfNN_ia64_hash_table (info
);
2169 if (ia64_info
== NULL
)
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
;
2193 /* We can only get preliminary data on whether a symbol is
2194 locally or externally defined, as not all of the input files
2195 have yet been processed. Do something with what we know, as
2196 this may help reduce memory usage and processing time later. */
2197 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2198 && (!SYMBOLIC_BIND (info
, h
)
2199 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2201 || h
->root
.type
== bfd_link_hash_defweak
));
2204 switch (ELFNN_R_TYPE (rel
->r_info
))
2206 case R_IA64_TPREL64MSB
:
2207 case R_IA64_TPREL64LSB
:
2208 if (bfd_link_pic (info
) || maybe_dynamic
)
2209 need_entry
= NEED_DYNREL
;
2212 case R_IA64_LTOFF_TPREL22
:
2213 need_entry
= NEED_TPREL
;
2214 if (bfd_link_pic (info
))
2215 info
->flags
|= DF_STATIC_TLS
;
2218 case R_IA64_DTPREL32MSB
:
2219 case R_IA64_DTPREL32LSB
:
2220 case R_IA64_DTPREL64MSB
:
2221 case R_IA64_DTPREL64LSB
:
2222 if (bfd_link_pic (info
) || maybe_dynamic
)
2223 need_entry
= NEED_DYNREL
;
2226 case R_IA64_LTOFF_DTPREL22
:
2227 need_entry
= NEED_DTPREL
;
2230 case R_IA64_DTPMOD64MSB
:
2231 case R_IA64_DTPMOD64LSB
:
2232 if (bfd_link_pic (info
) || maybe_dynamic
)
2233 need_entry
= NEED_DYNREL
;
2236 case R_IA64_LTOFF_DTPMOD22
:
2237 need_entry
= NEED_DTPMOD
;
2240 case R_IA64_LTOFF_FPTR22
:
2241 case R_IA64_LTOFF_FPTR64I
:
2242 case R_IA64_LTOFF_FPTR32MSB
:
2243 case R_IA64_LTOFF_FPTR32LSB
:
2244 case R_IA64_LTOFF_FPTR64MSB
:
2245 case R_IA64_LTOFF_FPTR64LSB
:
2246 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2249 case R_IA64_FPTR64I
:
2250 case R_IA64_FPTR32MSB
:
2251 case R_IA64_FPTR32LSB
:
2252 case R_IA64_FPTR64MSB
:
2253 case R_IA64_FPTR64LSB
:
2254 if (bfd_link_pic (info
) || h
)
2255 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2257 need_entry
= NEED_FPTR
;
2260 case R_IA64_LTOFF22
:
2261 case R_IA64_LTOFF64I
:
2262 need_entry
= NEED_GOT
;
2265 case R_IA64_LTOFF22X
:
2266 need_entry
= NEED_GOTX
;
2269 case R_IA64_PLTOFF22
:
2270 case R_IA64_PLTOFF64I
:
2271 case R_IA64_PLTOFF64MSB
:
2272 case R_IA64_PLTOFF64LSB
:
2273 need_entry
= NEED_PLTOFF
;
2277 need_entry
|= NEED_MIN_PLT
;
2281 (*info
->callbacks
->warning
)
2282 (info
, _("@pltoff reloc against local symbol"), 0,
2283 abfd
, 0, (bfd_vma
) 0);
2287 case R_IA64_PCREL21B
:
2288 case R_IA64_PCREL60B
:
2289 /* Depending on where this symbol is defined, we may or may not
2290 need a full plt entry. Only skip if we know we'll not need
2291 the entry -- static or symbolic, and the symbol definition
2292 has already been seen. */
2293 if (maybe_dynamic
&& rel
->r_addend
== 0)
2294 need_entry
= NEED_FULL_PLT
;
2300 case R_IA64_DIR32MSB
:
2301 case R_IA64_DIR32LSB
:
2302 case R_IA64_DIR64MSB
:
2303 case R_IA64_DIR64LSB
:
2304 /* Shared objects will always need at least a REL relocation. */
2305 if (bfd_link_pic (info
) || maybe_dynamic
)
2306 need_entry
= NEED_DYNREL
;
2309 case R_IA64_IPLTMSB
:
2310 case R_IA64_IPLTLSB
:
2311 /* Shared objects will always need at least a REL relocation. */
2312 if (bfd_link_pic (info
) || maybe_dynamic
)
2313 need_entry
= NEED_DYNREL
;
2316 case R_IA64_PCREL22
:
2317 case R_IA64_PCREL64I
:
2318 case R_IA64_PCREL32MSB
:
2319 case R_IA64_PCREL32LSB
:
2320 case R_IA64_PCREL64MSB
:
2321 case R_IA64_PCREL64LSB
:
2323 need_entry
= NEED_DYNREL
;
2330 if ((need_entry
& NEED_FPTR
) != 0
2333 (*info
->callbacks
->warning
)
2334 (info
, _("non-zero addend in @fptr reloc"), 0,
2335 abfd
, 0, (bfd_vma
) 0);
2338 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, TRUE
) == NULL
)
2342 /* Now, we only do lookup without insertion, which is very fast
2343 with the modified get_dyn_sym_info. */
2344 for (rel
= relocs
; rel
< relend
; ++rel
)
2346 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2347 int dynrel_type
= R_IA64_NONE
;
2349 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2350 if (r_symndx
>= symtab_hdr
->sh_info
)
2352 /* We're dealing with a global symbol -- find its hash entry
2353 and mark it as being referenced. */
2354 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2355 h
= elf_sym_hashes (abfd
)[indx
];
2356 while (h
->root
.type
== bfd_link_hash_indirect
2357 || h
->root
.type
== bfd_link_hash_warning
)
2358 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2360 /* PR15323, ref flags aren't set for references in the same
2362 h
->root
.non_ir_ref_regular
= 1;
2368 /* We can only get preliminary data on whether a symbol is
2369 locally or externally defined, as not all of the input files
2370 have yet been processed. Do something with what we know, as
2371 this may help reduce memory usage and processing time later. */
2372 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2373 && (!SYMBOLIC_BIND (info
, h
)
2374 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2376 || h
->root
.type
== bfd_link_hash_defweak
));
2379 switch (ELFNN_R_TYPE (rel
->r_info
))
2381 case R_IA64_TPREL64MSB
:
2382 case R_IA64_TPREL64LSB
:
2383 if (bfd_link_pic (info
) || maybe_dynamic
)
2384 need_entry
= NEED_DYNREL
;
2385 dynrel_type
= R_IA64_TPREL64LSB
;
2386 if (bfd_link_pic (info
))
2387 info
->flags
|= DF_STATIC_TLS
;
2390 case R_IA64_LTOFF_TPREL22
:
2391 need_entry
= NEED_TPREL
;
2392 if (bfd_link_pic (info
))
2393 info
->flags
|= DF_STATIC_TLS
;
2396 case R_IA64_DTPREL32MSB
:
2397 case R_IA64_DTPREL32LSB
:
2398 case R_IA64_DTPREL64MSB
:
2399 case R_IA64_DTPREL64LSB
:
2400 if (bfd_link_pic (info
) || maybe_dynamic
)
2401 need_entry
= NEED_DYNREL
;
2402 dynrel_type
= R_IA64_DTPRELNNLSB
;
2405 case R_IA64_LTOFF_DTPREL22
:
2406 need_entry
= NEED_DTPREL
;
2409 case R_IA64_DTPMOD64MSB
:
2410 case R_IA64_DTPMOD64LSB
:
2411 if (bfd_link_pic (info
) || maybe_dynamic
)
2412 need_entry
= NEED_DYNREL
;
2413 dynrel_type
= R_IA64_DTPMOD64LSB
;
2416 case R_IA64_LTOFF_DTPMOD22
:
2417 need_entry
= NEED_DTPMOD
;
2420 case R_IA64_LTOFF_FPTR22
:
2421 case R_IA64_LTOFF_FPTR64I
:
2422 case R_IA64_LTOFF_FPTR32MSB
:
2423 case R_IA64_LTOFF_FPTR32LSB
:
2424 case R_IA64_LTOFF_FPTR64MSB
:
2425 case R_IA64_LTOFF_FPTR64LSB
:
2426 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2429 case R_IA64_FPTR64I
:
2430 case R_IA64_FPTR32MSB
:
2431 case R_IA64_FPTR32LSB
:
2432 case R_IA64_FPTR64MSB
:
2433 case R_IA64_FPTR64LSB
:
2434 if (bfd_link_pic (info
) || h
)
2435 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2437 need_entry
= NEED_FPTR
;
2438 dynrel_type
= R_IA64_FPTRNNLSB
;
2441 case R_IA64_LTOFF22
:
2442 case R_IA64_LTOFF64I
:
2443 need_entry
= NEED_GOT
;
2446 case R_IA64_LTOFF22X
:
2447 need_entry
= NEED_GOTX
;
2450 case R_IA64_PLTOFF22
:
2451 case R_IA64_PLTOFF64I
:
2452 case R_IA64_PLTOFF64MSB
:
2453 case R_IA64_PLTOFF64LSB
:
2454 need_entry
= NEED_PLTOFF
;
2458 need_entry
|= NEED_MIN_PLT
;
2462 case R_IA64_PCREL21B
:
2463 case R_IA64_PCREL60B
:
2464 /* Depending on where this symbol is defined, we may or may not
2465 need a full plt entry. Only skip if we know we'll not need
2466 the entry -- static or symbolic, and the symbol definition
2467 has already been seen. */
2468 if (maybe_dynamic
&& rel
->r_addend
== 0)
2469 need_entry
= NEED_FULL_PLT
;
2475 case R_IA64_DIR32MSB
:
2476 case R_IA64_DIR32LSB
:
2477 case R_IA64_DIR64MSB
:
2478 case R_IA64_DIR64LSB
:
2479 /* Shared objects will always need at least a REL relocation. */
2480 if (bfd_link_pic (info
) || maybe_dynamic
)
2481 need_entry
= NEED_DYNREL
;
2482 dynrel_type
= R_IA64_DIRNNLSB
;
2485 case R_IA64_IPLTMSB
:
2486 case R_IA64_IPLTLSB
:
2487 /* Shared objects will always need at least a REL relocation. */
2488 if (bfd_link_pic (info
) || maybe_dynamic
)
2489 need_entry
= NEED_DYNREL
;
2490 dynrel_type
= R_IA64_IPLTLSB
;
2493 case R_IA64_PCREL22
:
2494 case R_IA64_PCREL64I
:
2495 case R_IA64_PCREL32MSB
:
2496 case R_IA64_PCREL32LSB
:
2497 case R_IA64_PCREL64MSB
:
2498 case R_IA64_PCREL64LSB
:
2500 need_entry
= NEED_DYNREL
;
2501 dynrel_type
= R_IA64_PCRELNNLSB
;
2508 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, FALSE
);
2510 /* Record whether or not this is a local symbol. */
2513 /* Create what's needed. */
2514 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2515 | NEED_DTPMOD
| NEED_DTPREL
))
2519 got
= get_got (abfd
, info
, ia64_info
);
2523 if (need_entry
& NEED_GOT
)
2524 dyn_i
->want_got
= 1;
2525 if (need_entry
& NEED_GOTX
)
2526 dyn_i
->want_gotx
= 1;
2527 if (need_entry
& NEED_TPREL
)
2528 dyn_i
->want_tprel
= 1;
2529 if (need_entry
& NEED_DTPMOD
)
2530 dyn_i
->want_dtpmod
= 1;
2531 if (need_entry
& NEED_DTPREL
)
2532 dyn_i
->want_dtprel
= 1;
2534 if (need_entry
& NEED_FPTR
)
2538 fptr
= get_fptr (abfd
, info
, ia64_info
);
2543 /* FPTRs for shared libraries are allocated by the dynamic
2544 linker. Make sure this local symbol will appear in the
2545 dynamic symbol table. */
2546 if (!h
&& bfd_link_pic (info
))
2548 if (! (bfd_elf_link_record_local_dynamic_symbol
2549 (info
, abfd
, (long) r_symndx
)))
2553 dyn_i
->want_fptr
= 1;
2555 if (need_entry
& NEED_LTOFF_FPTR
)
2556 dyn_i
->want_ltoff_fptr
= 1;
2557 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2559 if (!ia64_info
->root
.dynobj
)
2560 ia64_info
->root
.dynobj
= abfd
;
2562 dyn_i
->want_plt
= 1;
2564 if (need_entry
& NEED_FULL_PLT
)
2565 dyn_i
->want_plt2
= 1;
2566 if (need_entry
& NEED_PLTOFF
)
2568 /* This is needed here, in case @pltoff is used in a non-shared
2572 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2577 dyn_i
->want_pltoff
= 1;
2579 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2583 srel
= get_reloc_section (abfd
, ia64_info
, sec
, TRUE
);
2587 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2588 (sec
->flags
& SEC_READONLY
) != 0))
2596 /* For cleanliness, and potentially faster dynamic loading, allocate
2597 external GOT entries first. */
2600 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2603 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2605 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2606 && ! dyn_i
->want_fptr
2607 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2609 dyn_i
->got_offset
= x
->ofs
;
2612 if (dyn_i
->want_tprel
)
2614 dyn_i
->tprel_offset
= x
->ofs
;
2617 if (dyn_i
->want_dtpmod
)
2619 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2621 dyn_i
->dtpmod_offset
= x
->ofs
;
2626 struct elfNN_ia64_link_hash_table
*ia64_info
;
2628 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2629 if (ia64_info
== NULL
)
2632 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2634 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2637 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2640 if (dyn_i
->want_dtprel
)
2642 dyn_i
->dtprel_offset
= x
->ofs
;
2648 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2651 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2654 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2658 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2660 dyn_i
->got_offset
= x
->ofs
;
2666 /* Lastly, allocate all the GOT entries for local data. */
2669 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2672 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2674 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2675 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2677 dyn_i
->got_offset
= x
->ofs
;
2683 /* Search for the index of a global symbol in it's defining object file. */
2686 global_sym_index (struct elf_link_hash_entry
*h
)
2688 struct elf_link_hash_entry
**p
;
2691 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2692 || h
->root
.type
== bfd_link_hash_defweak
);
2694 obj
= h
->root
.u
.def
.section
->owner
;
2695 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2698 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2701 /* Allocate function descriptors. We can do these for every function
2702 in a main executable that is not exported. */
2705 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2707 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2709 if (dyn_i
->want_fptr
)
2711 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2714 while (h
->root
.type
== bfd_link_hash_indirect
2715 || h
->root
.type
== bfd_link_hash_warning
)
2716 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2718 if (!bfd_link_executable (x
->info
)
2720 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2721 || (h
->root
.type
!= bfd_link_hash_undefweak
2722 && h
->root
.type
!= bfd_link_hash_undefined
)))
2724 if (h
&& h
->dynindx
== -1)
2726 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2727 || (h
->root
.type
== bfd_link_hash_defweak
));
2729 if (!bfd_elf_link_record_local_dynamic_symbol
2730 (x
->info
, h
->root
.u
.def
.section
->owner
,
2731 global_sym_index (h
)))
2735 dyn_i
->want_fptr
= 0;
2737 else if (h
== NULL
|| h
->dynindx
== -1)
2739 dyn_i
->fptr_offset
= x
->ofs
;
2743 dyn_i
->want_fptr
= 0;
2748 /* Allocate all the minimal PLT entries. */
2751 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2754 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2756 if (dyn_i
->want_plt
)
2758 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2761 while (h
->root
.type
== bfd_link_hash_indirect
2762 || h
->root
.type
== bfd_link_hash_warning
)
2763 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2765 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2766 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2768 bfd_size_type offset
= x
->ofs
;
2770 offset
= PLT_HEADER_SIZE
;
2771 dyn_i
->plt_offset
= offset
;
2772 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2774 dyn_i
->want_pltoff
= 1;
2778 dyn_i
->want_plt
= 0;
2779 dyn_i
->want_plt2
= 0;
2785 /* Allocate all the full PLT entries. */
2788 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2791 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2793 if (dyn_i
->want_plt2
)
2795 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2796 bfd_size_type ofs
= x
->ofs
;
2798 dyn_i
->plt2_offset
= ofs
;
2799 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2801 while (h
->root
.type
== bfd_link_hash_indirect
2802 || h
->root
.type
== bfd_link_hash_warning
)
2803 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2804 dyn_i
->h
->plt
.offset
= ofs
;
2809 /* Allocate all the PLTOFF entries requested by relocations and
2810 plt entries. We can't share space with allocated FPTR entries,
2811 because the latter are not necessarily addressable by the GP.
2812 ??? Relaxation might be able to determine that they are. */
2815 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2818 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2820 if (dyn_i
->want_pltoff
)
2822 dyn_i
->pltoff_offset
= x
->ofs
;
2828 /* Allocate dynamic relocations for those symbols that turned out
2832 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2835 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2836 struct elfNN_ia64_link_hash_table
*ia64_info
;
2837 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2838 bfd_boolean dynamic_symbol
, shared
, resolved_zero
;
2840 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2841 if (ia64_info
== NULL
)
2844 /* Note that this can't be used in relation to FPTR relocs below. */
2845 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2847 shared
= bfd_link_pic (x
->info
);
2848 resolved_zero
= (dyn_i
->h
2849 && ELF_ST_VISIBILITY (dyn_i
->h
->other
)
2850 && dyn_i
->h
->root
.type
== bfd_link_hash_undefweak
);
2852 /* Take care of the GOT and PLT relocations. */
2855 && (dynamic_symbol
|| shared
)
2856 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2857 || (dyn_i
->want_ltoff_fptr
2859 && dyn_i
->h
->dynindx
!= -1))
2861 if (!dyn_i
->want_ltoff_fptr
2862 || !bfd_link_pie (x
->info
)
2864 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2865 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2867 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2868 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2869 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2870 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2871 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2872 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2877 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2879 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2880 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2883 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2885 bfd_size_type t
= 0;
2887 /* Dynamic symbols get one IPLT relocation. Local symbols in
2888 shared libraries get two REL relocations. Local symbols in
2889 main applications get nothing. */
2891 t
= sizeof (ElfNN_External_Rela
);
2893 t
= 2 * sizeof (ElfNN_External_Rela
);
2895 ia64_info
->rel_pltoff_sec
->size
+= t
;
2898 /* Take care of the normal data relocations. */
2900 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2902 int count
= rent
->count
;
2906 case R_IA64_FPTR32LSB
:
2907 case R_IA64_FPTR64LSB
:
2908 /* Allocate one iff !want_fptr and not PIE, which by this point
2909 will be true only if we're actually allocating one statically
2910 in the main executable. Position independent executables
2911 need a relative reloc. */
2912 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2915 case R_IA64_PCREL32LSB
:
2916 case R_IA64_PCREL64LSB
:
2917 if (!dynamic_symbol
)
2920 case R_IA64_DIR32LSB
:
2921 case R_IA64_DIR64LSB
:
2922 if (!dynamic_symbol
&& !shared
)
2925 case R_IA64_IPLTLSB
:
2926 if (!dynamic_symbol
&& !shared
)
2928 /* Use two REL relocations for IPLT relocations
2929 against local symbols. */
2930 if (!dynamic_symbol
)
2933 case R_IA64_DTPREL32LSB
:
2934 case R_IA64_TPREL64LSB
:
2935 case R_IA64_DTPREL64LSB
:
2936 case R_IA64_DTPMOD64LSB
:
2942 ia64_info
->reltext
= 1;
2943 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2950 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2951 struct elf_link_hash_entry
*h
)
2953 /* ??? Undefined symbols with PLT entries should be re-defined
2954 to be the PLT entry. */
2956 /* If this is a weak symbol, and there is a real definition, the
2957 processor independent code will have arranged for us to see the
2958 real definition first, and we can just use the same value. */
2959 if (h
->u
.weakdef
!= NULL
)
2961 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2962 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2963 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2964 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2968 /* If this is a reference to a symbol defined by a dynamic object which
2969 is not a function, we might allocate the symbol in our .dynbss section
2970 and allocate a COPY dynamic relocation.
2972 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2979 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2980 struct bfd_link_info
*info
)
2982 struct elfNN_ia64_allocate_data data
;
2983 struct elfNN_ia64_link_hash_table
*ia64_info
;
2986 bfd_boolean relplt
= FALSE
;
2988 ia64_info
= elfNN_ia64_hash_table (info
);
2989 if (ia64_info
== NULL
)
2991 dynobj
= ia64_info
->root
.dynobj
;
2992 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
2993 BFD_ASSERT(dynobj
!= NULL
);
2996 /* Set the contents of the .interp section to the interpreter. */
2997 if (ia64_info
->root
.dynamic_sections_created
2998 && bfd_link_executable (info
) && !info
->nointerp
)
3000 sec
= bfd_get_linker_section (dynobj
, ".interp");
3001 BFD_ASSERT (sec
!= NULL
);
3002 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3003 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3006 /* Allocate the GOT entries. */
3008 if (ia64_info
->root
.sgot
)
3011 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3012 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3013 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3014 ia64_info
->root
.sgot
->size
= data
.ofs
;
3017 /* Allocate the FPTR entries. */
3019 if (ia64_info
->fptr_sec
)
3022 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3023 ia64_info
->fptr_sec
->size
= data
.ofs
;
3026 /* Now that we've seen all of the input files, we can decide which
3027 symbols need plt entries. Allocate the minimal PLT entries first.
3028 We do this even though dynamic_sections_created may be FALSE, because
3029 this has the side-effect of clearing want_plt and want_plt2. */
3032 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3034 ia64_info
->minplt_entries
= 0;
3037 ia64_info
->minplt_entries
3038 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3041 /* Align the pointer for the plt2 entries. */
3042 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3044 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3045 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3047 /* FIXME: we always reserve the memory for dynamic linker even if
3048 there are no PLT entries since dynamic linker may assume the
3049 reserved memory always exists. */
3051 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3053 ia64_info
->root
.splt
->size
= data
.ofs
;
3055 /* If we've got a .plt, we need some extra memory for the dynamic
3056 linker. We stuff these in .got.plt. */
3057 ia64_info
->root
.sgotplt
->size
= 8 * PLT_RESERVED_WORDS
;
3060 /* Allocate the PLTOFF entries. */
3062 if (ia64_info
->pltoff_sec
)
3065 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_pltoff_entries
, &data
);
3066 ia64_info
->pltoff_sec
->size
= data
.ofs
;
3069 if (ia64_info
->root
.dynamic_sections_created
)
3071 /* Allocate space for the dynamic relocations that turned out to be
3074 if (bfd_link_pic (info
) && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
3075 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
3076 data
.only_got
= FALSE
;
3077 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
, &data
);
3080 /* We have now determined the sizes of the various dynamic sections.
3081 Allocate memory for them. */
3082 for (sec
= dynobj
->sections
; sec
!= NULL
; sec
= sec
->next
)
3086 if (!(sec
->flags
& SEC_LINKER_CREATED
))
3089 /* If we don't need this section, strip it from the output file.
3090 There were several sections primarily related to dynamic
3091 linking that must be create before the linker maps input
3092 sections to output sections. The linker does that before
3093 bfd_elf_size_dynamic_sections is called, and it is that
3094 function which decides whether anything needs to go into
3097 strip
= (sec
->size
== 0);
3099 if (sec
== ia64_info
->root
.sgot
)
3101 else if (sec
== ia64_info
->root
.srelgot
)
3104 ia64_info
->root
.srelgot
= NULL
;
3106 /* We use the reloc_count field as a counter if we need to
3107 copy relocs into the output file. */
3108 sec
->reloc_count
= 0;
3110 else if (sec
== ia64_info
->fptr_sec
)
3113 ia64_info
->fptr_sec
= NULL
;
3115 else if (sec
== ia64_info
->rel_fptr_sec
)
3118 ia64_info
->rel_fptr_sec
= NULL
;
3120 /* We use the reloc_count field as a counter if we need to
3121 copy relocs into the output file. */
3122 sec
->reloc_count
= 0;
3124 else if (sec
== ia64_info
->root
.splt
)
3127 ia64_info
->root
.splt
= NULL
;
3129 else if (sec
== ia64_info
->pltoff_sec
)
3132 ia64_info
->pltoff_sec
= NULL
;
3134 else if (sec
== ia64_info
->rel_pltoff_sec
)
3137 ia64_info
->rel_pltoff_sec
= NULL
;
3141 /* We use the reloc_count field as a counter if we need to
3142 copy relocs into the output file. */
3143 sec
->reloc_count
= 0;
3150 /* It's OK to base decisions on the section name, because none
3151 of the dynobj section names depend upon the input files. */
3152 name
= bfd_get_section_name (dynobj
, sec
);
3154 if (strcmp (name
, ".got.plt") == 0)
3156 else if (CONST_STRNEQ (name
, ".rel"))
3160 /* We use the reloc_count field as a counter if we need to
3161 copy relocs into the output file. */
3162 sec
->reloc_count
= 0;
3170 sec
->flags
|= SEC_EXCLUDE
;
3173 /* Allocate memory for the section contents. */
3174 sec
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, sec
->size
);
3175 if (sec
->contents
== NULL
&& sec
->size
!= 0)
3180 if (ia64_info
->root
.dynamic_sections_created
)
3182 /* Add some entries to the .dynamic section. We fill in the values
3183 later (in finish_dynamic_sections) but we must add the entries now
3184 so that we get the correct size for the .dynamic section. */
3186 if (bfd_link_executable (info
))
3188 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3190 #define add_dynamic_entry(TAG, VAL) \
3191 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3193 if (!add_dynamic_entry (DT_DEBUG
, 0))
3197 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE
, 0))
3199 if (!add_dynamic_entry (DT_PLTGOT
, 0))
3204 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
3205 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3206 || !add_dynamic_entry (DT_JMPREL
, 0))
3210 if (!add_dynamic_entry (DT_RELA
, 0)
3211 || !add_dynamic_entry (DT_RELASZ
, 0)
3212 || !add_dynamic_entry (DT_RELAENT
, sizeof (ElfNN_External_Rela
)))
3215 if (ia64_info
->reltext
)
3217 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3219 info
->flags
|= DF_TEXTREL
;
3223 /* ??? Perhaps force __gp local. */
3229 elfNN_ia64_install_dyn_reloc (bfd
*abfd
, struct bfd_link_info
*info
,
3230 asection
*sec
, asection
*srel
,
3231 bfd_vma offset
, unsigned int type
,
3232 long dynindx
, bfd_vma addend
)
3234 Elf_Internal_Rela outrel
;
3237 BFD_ASSERT (dynindx
!= -1);
3238 outrel
.r_info
= ELFNN_R_INFO (dynindx
, type
);
3239 outrel
.r_addend
= addend
;
3240 outrel
.r_offset
= _bfd_elf_section_offset (abfd
, info
, sec
, offset
);
3241 if (outrel
.r_offset
>= (bfd_vma
) -2)
3243 /* Run for the hills. We shouldn't be outputting a relocation
3244 for this. So do what everyone else does and output a no-op. */
3245 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
3246 outrel
.r_addend
= 0;
3247 outrel
.r_offset
= 0;
3250 outrel
.r_offset
+= sec
->output_section
->vma
+ sec
->output_offset
;
3252 loc
= srel
->contents
;
3253 loc
+= srel
->reloc_count
++ * sizeof (ElfNN_External_Rela
);
3254 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3255 BFD_ASSERT (sizeof (ElfNN_External_Rela
) * srel
->reloc_count
<= srel
->size
);
3258 /* Store an entry for target address TARGET_ADDR in the linkage table
3259 and return the gp-relative address of the linkage table entry. */
3262 set_got_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3263 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3264 long dynindx
, bfd_vma addend
, bfd_vma value
,
3265 unsigned int dyn_r_type
)
3267 struct elfNN_ia64_link_hash_table
*ia64_info
;
3272 ia64_info
= elfNN_ia64_hash_table (info
);
3273 if (ia64_info
== NULL
)
3276 got_sec
= ia64_info
->root
.sgot
;
3280 case R_IA64_TPREL64LSB
:
3281 done
= dyn_i
->tprel_done
;
3282 dyn_i
->tprel_done
= TRUE
;
3283 got_offset
= dyn_i
->tprel_offset
;
3285 case R_IA64_DTPMOD64LSB
:
3286 if (dyn_i
->dtpmod_offset
!= ia64_info
->self_dtpmod_offset
)
3288 done
= dyn_i
->dtpmod_done
;
3289 dyn_i
->dtpmod_done
= TRUE
;
3293 done
= ia64_info
->self_dtpmod_done
;
3294 ia64_info
->self_dtpmod_done
= TRUE
;
3297 got_offset
= dyn_i
->dtpmod_offset
;
3299 case R_IA64_DTPREL32LSB
:
3300 case R_IA64_DTPREL64LSB
:
3301 done
= dyn_i
->dtprel_done
;
3302 dyn_i
->dtprel_done
= TRUE
;
3303 got_offset
= dyn_i
->dtprel_offset
;
3306 done
= dyn_i
->got_done
;
3307 dyn_i
->got_done
= TRUE
;
3308 got_offset
= dyn_i
->got_offset
;
3312 BFD_ASSERT ((got_offset
& 7) == 0);
3316 /* Store the target address in the linkage table entry. */
3317 bfd_put_64 (abfd
, value
, got_sec
->contents
+ got_offset
);
3319 /* Install a dynamic relocation if needed. */
3320 if (((bfd_link_pic (info
)
3322 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3323 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
3324 && dyn_r_type
!= R_IA64_DTPREL32LSB
3325 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3326 || elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, info
, dyn_r_type
)
3328 && (dyn_r_type
== R_IA64_FPTR32LSB
3329 || dyn_r_type
== R_IA64_FPTR64LSB
)))
3330 && (!dyn_i
->want_ltoff_fptr
3331 || !bfd_link_pie (info
)
3333 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3336 && dyn_r_type
!= R_IA64_TPREL64LSB
3337 && dyn_r_type
!= R_IA64_DTPMOD64LSB
3338 && dyn_r_type
!= R_IA64_DTPREL32LSB
3339 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3341 dyn_r_type
= R_IA64_RELNNLSB
;
3346 if (bfd_big_endian (abfd
))
3350 case R_IA64_REL32LSB
:
3351 dyn_r_type
= R_IA64_REL32MSB
;
3353 case R_IA64_DIR32LSB
:
3354 dyn_r_type
= R_IA64_DIR32MSB
;
3356 case R_IA64_FPTR32LSB
:
3357 dyn_r_type
= R_IA64_FPTR32MSB
;
3359 case R_IA64_DTPREL32LSB
:
3360 dyn_r_type
= R_IA64_DTPREL32MSB
;
3362 case R_IA64_REL64LSB
:
3363 dyn_r_type
= R_IA64_REL64MSB
;
3365 case R_IA64_DIR64LSB
:
3366 dyn_r_type
= R_IA64_DIR64MSB
;
3368 case R_IA64_FPTR64LSB
:
3369 dyn_r_type
= R_IA64_FPTR64MSB
;
3371 case R_IA64_TPREL64LSB
:
3372 dyn_r_type
= R_IA64_TPREL64MSB
;
3374 case R_IA64_DTPMOD64LSB
:
3375 dyn_r_type
= R_IA64_DTPMOD64MSB
;
3377 case R_IA64_DTPREL64LSB
:
3378 dyn_r_type
= R_IA64_DTPREL64MSB
;
3386 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, got_sec
,
3387 ia64_info
->root
.srelgot
,
3388 got_offset
, dyn_r_type
,
3393 /* Return the address of the linkage table entry. */
3394 value
= (got_sec
->output_section
->vma
3395 + got_sec
->output_offset
3401 /* Fill in a function descriptor consisting of the function's code
3402 address and its global pointer. Return the descriptor's address. */
3405 set_fptr_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3406 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3409 struct elfNN_ia64_link_hash_table
*ia64_info
;
3412 ia64_info
= elfNN_ia64_hash_table (info
);
3413 if (ia64_info
== NULL
)
3416 fptr_sec
= ia64_info
->fptr_sec
;
3418 if (!dyn_i
->fptr_done
)
3420 dyn_i
->fptr_done
= 1;
3422 /* Fill in the function descriptor. */
3423 bfd_put_64 (abfd
, value
, fptr_sec
->contents
+ dyn_i
->fptr_offset
);
3424 bfd_put_64 (abfd
, _bfd_get_gp_value (abfd
),
3425 fptr_sec
->contents
+ dyn_i
->fptr_offset
+ 8);
3426 if (ia64_info
->rel_fptr_sec
)
3428 Elf_Internal_Rela outrel
;
3431 if (bfd_little_endian (abfd
))
3432 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTLSB
);
3434 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTMSB
);
3435 outrel
.r_addend
= value
;
3436 outrel
.r_offset
= (fptr_sec
->output_section
->vma
3437 + fptr_sec
->output_offset
3438 + dyn_i
->fptr_offset
);
3439 loc
= ia64_info
->rel_fptr_sec
->contents
;
3440 loc
+= ia64_info
->rel_fptr_sec
->reloc_count
++
3441 * sizeof (ElfNN_External_Rela
);
3442 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3446 /* Return the descriptor's address. */
3447 value
= (fptr_sec
->output_section
->vma
3448 + fptr_sec
->output_offset
3449 + dyn_i
->fptr_offset
);
3454 /* Fill in a PLTOFF entry consisting of the function's code address
3455 and its global pointer. Return the descriptor's address. */
3458 set_pltoff_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3459 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3460 bfd_vma value
, bfd_boolean is_plt
)
3462 struct elfNN_ia64_link_hash_table
*ia64_info
;
3463 asection
*pltoff_sec
;
3465 ia64_info
= elfNN_ia64_hash_table (info
);
3466 if (ia64_info
== NULL
)
3469 pltoff_sec
= ia64_info
->pltoff_sec
;
3471 /* Don't do anything if this symbol uses a real PLT entry. In
3472 that case, we'll fill this in during finish_dynamic_symbol. */
3473 if ((! dyn_i
->want_plt
|| is_plt
)
3474 && !dyn_i
->pltoff_done
)
3476 bfd_vma gp
= _bfd_get_gp_value (abfd
);
3478 /* Fill in the function descriptor. */
3479 bfd_put_64 (abfd
, value
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
);
3480 bfd_put_64 (abfd
, gp
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
+ 8);
3482 /* Install dynamic relocations if needed. */
3484 && bfd_link_pic (info
)
3486 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3487 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3489 unsigned int dyn_r_type
;
3491 if (bfd_big_endian (abfd
))
3492 dyn_r_type
= R_IA64_RELNNMSB
;
3494 dyn_r_type
= R_IA64_RELNNLSB
;
3496 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3497 ia64_info
->rel_pltoff_sec
,
3498 dyn_i
->pltoff_offset
,
3499 dyn_r_type
, 0, value
);
3500 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3501 ia64_info
->rel_pltoff_sec
,
3502 dyn_i
->pltoff_offset
+ ARCH_SIZE
/ 8,
3506 dyn_i
->pltoff_done
= 1;
3509 /* Return the descriptor's address. */
3510 value
= (pltoff_sec
->output_section
->vma
3511 + pltoff_sec
->output_offset
3512 + dyn_i
->pltoff_offset
);
3517 /* Return the base VMA address which should be subtracted from real addresses
3518 when resolving @tprel() relocation.
3519 Main program TLS (whose template starts at PT_TLS p_vaddr)
3520 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3523 elfNN_ia64_tprel_base (struct bfd_link_info
*info
)
3525 asection
*tls_sec
= elf_hash_table (info
)->tls_sec
;
3526 return tls_sec
->vma
- align_power ((bfd_vma
) ARCH_SIZE
/ 4,
3527 tls_sec
->alignment_power
);
3530 /* Return the base VMA address which should be subtracted from real addresses
3531 when resolving @dtprel() relocation.
3532 This is PT_TLS segment p_vaddr. */
3535 elfNN_ia64_dtprel_base (struct bfd_link_info
*info
)
3537 return elf_hash_table (info
)->tls_sec
->vma
;
3540 /* Called through qsort to sort the .IA_64.unwind section during a
3541 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3542 to the output bfd so we can do proper endianness frobbing. */
3544 static bfd
*elfNN_ia64_unwind_entry_compare_bfd
;
3547 elfNN_ia64_unwind_entry_compare (const void * a
, const void * b
)
3551 av
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, a
);
3552 bv
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, b
);
3554 return (av
< bv
? -1 : av
> bv
? 1 : 0);
3557 /* Make sure we've got ourselves a nice fat __gp value. */
3559 elfNN_ia64_choose_gp (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
)
3561 bfd_vma min_vma
= (bfd_vma
) -1, max_vma
= 0;
3562 bfd_vma min_short_vma
= min_vma
, max_short_vma
= 0;
3563 struct elf_link_hash_entry
*gp
;
3566 struct elfNN_ia64_link_hash_table
*ia64_info
;
3568 ia64_info
= elfNN_ia64_hash_table (info
);
3569 if (ia64_info
== NULL
)
3572 /* Find the min and max vma of all sections marked short. Also collect
3573 min and max vma of any type, for use in selecting a nice gp. */
3574 for (os
= abfd
->sections
; os
; os
= os
->next
)
3578 if ((os
->flags
& SEC_ALLOC
) == 0)
3582 /* When this function is called from elfNN_ia64_final_link
3583 the correct value to use is os->size. When called from
3584 elfNN_ia64_relax_section we are in the middle of section
3585 sizing; some sections will already have os->size set, others
3586 will have os->size zero and os->rawsize the previous size. */
3587 hi
= os
->vma
+ (!final
&& os
->rawsize
? os
->rawsize
: os
->size
);
3595 if (os
->flags
& SEC_SMALL_DATA
)
3597 if (min_short_vma
> lo
)
3599 if (max_short_vma
< hi
)
3604 if (ia64_info
->min_short_sec
)
3607 > (ia64_info
->min_short_sec
->vma
3608 + ia64_info
->min_short_offset
))
3609 min_short_vma
= (ia64_info
->min_short_sec
->vma
3610 + ia64_info
->min_short_offset
);
3612 < (ia64_info
->max_short_sec
->vma
3613 + ia64_info
->max_short_offset
))
3614 max_short_vma
= (ia64_info
->max_short_sec
->vma
3615 + ia64_info
->max_short_offset
);
3618 /* See if the user wants to force a value. */
3619 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3623 && (gp
->root
.type
== bfd_link_hash_defined
3624 || gp
->root
.type
== bfd_link_hash_defweak
))
3626 asection
*gp_sec
= gp
->root
.u
.def
.section
;
3627 gp_val
= (gp
->root
.u
.def
.value
3628 + gp_sec
->output_section
->vma
3629 + gp_sec
->output_offset
);
3633 /* Pick a sensible value. */
3635 if (ia64_info
->min_short_sec
)
3637 bfd_vma short_range
= max_short_vma
- min_short_vma
;
3639 /* If min_short_sec is set, pick one in the middle bewteen
3640 min_short_vma and max_short_vma. */
3641 if (short_range
>= 0x400000)
3643 gp_val
= min_short_vma
+ short_range
/ 2;
3647 asection
*got_sec
= ia64_info
->root
.sgot
;
3649 /* Start with just the address of the .got. */
3651 gp_val
= got_sec
->output_section
->vma
;
3652 else if (max_short_vma
!= 0)
3653 gp_val
= min_short_vma
;
3654 else if (max_vma
- min_vma
< 0x200000)
3657 gp_val
= max_vma
- 0x200000 + 8;
3660 /* If it is possible to address the entire image, but we
3661 don't with the choice above, adjust. */
3662 if (max_vma
- min_vma
< 0x400000
3663 && (max_vma
- gp_val
>= 0x200000
3664 || gp_val
- min_vma
> 0x200000))
3665 gp_val
= min_vma
+ 0x200000;
3666 else if (max_short_vma
!= 0)
3668 /* If we don't cover all the short data, adjust. */
3669 if (max_short_vma
- gp_val
>= 0x200000)
3670 gp_val
= min_short_vma
+ 0x200000;
3672 /* If we're addressing stuff past the end, adjust back. */
3673 if (gp_val
> max_vma
)
3674 gp_val
= max_vma
- 0x200000 + 8;
3678 /* Validate whether all SHF_IA_64_SHORT sections are within
3679 range of the chosen GP. */
3681 if (max_short_vma
!= 0)
3683 if (max_short_vma
- min_short_vma
>= 0x400000)
3687 /* xgettext:c-format */
3688 (_("%B: short data segment overflowed (%#Lx >= 0x400000)"),
3689 abfd
, max_short_vma
- min_short_vma
);
3692 else if ((gp_val
> min_short_vma
3693 && gp_val
- min_short_vma
> 0x200000)
3694 || (gp_val
< max_short_vma
3695 && max_short_vma
- gp_val
>= 0x200000))
3698 (_("%B: __gp does not cover short data segment"), abfd
);
3703 _bfd_set_gp_value (abfd
, gp_val
);
3709 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3711 struct elfNN_ia64_link_hash_table
*ia64_info
;
3712 asection
*unwind_output_sec
;
3714 ia64_info
= elfNN_ia64_hash_table (info
);
3715 if (ia64_info
== NULL
)
3718 /* Make sure we've got ourselves a nice fat __gp value. */
3719 if (!bfd_link_relocatable (info
))
3722 struct elf_link_hash_entry
*gp
;
3724 /* We assume after gp is set, section size will only decrease. We
3725 need to adjust gp for it. */
3726 _bfd_set_gp_value (abfd
, 0);
3727 if (! elfNN_ia64_choose_gp (abfd
, info
, TRUE
))
3729 gp_val
= _bfd_get_gp_value (abfd
);
3731 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3735 gp
->root
.type
= bfd_link_hash_defined
;
3736 gp
->root
.u
.def
.value
= gp_val
;
3737 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3741 /* If we're producing a final executable, we need to sort the contents
3742 of the .IA_64.unwind section. Force this section to be relocated
3743 into memory rather than written immediately to the output file. */
3744 unwind_output_sec
= NULL
;
3745 if (!bfd_link_relocatable (info
))
3747 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3750 unwind_output_sec
= s
->output_section
;
3751 unwind_output_sec
->contents
3752 = bfd_malloc (unwind_output_sec
->size
);
3753 if (unwind_output_sec
->contents
== NULL
)
3758 /* Invoke the regular ELF backend linker to do all the work. */
3759 if (!bfd_elf_final_link (abfd
, info
))
3762 if (unwind_output_sec
)
3764 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3765 qsort (unwind_output_sec
->contents
,
3766 (size_t) (unwind_output_sec
->size
/ 24),
3768 elfNN_ia64_unwind_entry_compare
);
3770 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3771 unwind_output_sec
->contents
, (bfd_vma
) 0,
3772 unwind_output_sec
->size
))
3780 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3781 struct bfd_link_info
*info
,
3783 asection
*input_section
,
3785 Elf_Internal_Rela
*relocs
,
3786 Elf_Internal_Sym
*local_syms
,
3787 asection
**local_sections
)
3789 struct elfNN_ia64_link_hash_table
*ia64_info
;
3790 Elf_Internal_Shdr
*symtab_hdr
;
3791 Elf_Internal_Rela
*rel
;
3792 Elf_Internal_Rela
*relend
;
3794 bfd_boolean ret_val
= TRUE
; /* for non-fatal errors */
3797 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3798 ia64_info
= elfNN_ia64_hash_table (info
);
3799 if (ia64_info
== NULL
)
3802 /* Infect various flags from the input section to the output section. */
3803 if (bfd_link_relocatable (info
))
3807 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3808 flags
&= SHF_IA_64_NORECOV
;
3810 elf_section_data(input_section
->output_section
)
3811 ->this_hdr
.sh_flags
|= flags
;
3814 gp_val
= _bfd_get_gp_value (output_bfd
);
3815 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, FALSE
);
3818 relend
= relocs
+ input_section
->reloc_count
;
3819 for (; rel
< relend
; ++rel
)
3821 struct elf_link_hash_entry
*h
;
3822 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3823 bfd_reloc_status_type r
;
3824 reloc_howto_type
*howto
;
3825 unsigned long r_symndx
;
3826 Elf_Internal_Sym
*sym
;
3827 unsigned int r_type
;
3831 bfd_boolean dynamic_symbol_p
;
3832 bfd_boolean undef_weak_ref
;
3834 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3835 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3838 /* xgettext:c-format */
3839 (_("%B: unknown relocation type %d"), input_bfd
, (int) r_type
);
3840 bfd_set_error (bfd_error_bad_value
);
3845 howto
= ia64_elf_lookup_howto (r_type
);
3846 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3850 undef_weak_ref
= FALSE
;
3852 if (r_symndx
< symtab_hdr
->sh_info
)
3854 /* Reloc against local symbol. */
3856 sym
= local_syms
+ r_symndx
;
3857 sym_sec
= local_sections
[r_symndx
];
3859 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3860 if (!bfd_link_relocatable (info
)
3861 && (sym_sec
->flags
& SEC_MERGE
) != 0
3862 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3863 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3865 struct elfNN_ia64_local_hash_entry
*loc_h
;
3867 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, FALSE
);
3868 if (loc_h
&& ! loc_h
->sec_merge_done
)
3870 struct elfNN_ia64_dyn_sym_info
*dynent
;
3873 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3879 _bfd_merged_section_offset (output_bfd
, &msec
,
3880 elf_section_data (msec
)->
3884 dynent
->addend
-= sym
->st_value
;
3885 dynent
->addend
+= msec
->output_section
->vma
3886 + msec
->output_offset
3887 - sym_sec
->output_section
->vma
3888 - sym_sec
->output_offset
;
3891 /* We may have introduced duplicated entries. We need
3892 to remove them properly. */
3893 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3894 if (count
!= loc_h
->count
)
3896 loc_h
->count
= count
;
3897 loc_h
->sorted_count
= count
;
3900 loc_h
->sec_merge_done
= 1;
3906 bfd_boolean unresolved_reloc
;
3907 bfd_boolean warned
, ignored
;
3908 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3910 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3911 r_symndx
, symtab_hdr
, sym_hashes
,
3913 unresolved_reloc
, warned
, ignored
);
3915 if (h
->root
.type
== bfd_link_hash_undefweak
)
3916 undef_weak_ref
= TRUE
;
3917 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3921 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3922 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3923 rel
, 1, relend
, howto
, 0, contents
);
3925 if (bfd_link_relocatable (info
))
3928 hit_addr
= contents
+ rel
->r_offset
;
3929 value
+= rel
->r_addend
;
3930 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3941 case R_IA64_DIR32MSB
:
3942 case R_IA64_DIR32LSB
:
3943 case R_IA64_DIR64MSB
:
3944 case R_IA64_DIR64LSB
:
3945 /* Install a dynamic relocation for this reloc. */
3946 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3947 && r_symndx
!= STN_UNDEF
3948 && (input_section
->flags
& SEC_ALLOC
) != 0)
3950 unsigned int dyn_r_type
;
3954 BFD_ASSERT (srel
!= NULL
);
3961 /* ??? People shouldn't be doing non-pic code in
3962 shared libraries nor dynamic executables. */
3964 /* xgettext:c-format */
3965 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3967 h
? h
->root
.root
.string
3968 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
3977 /* If we don't need dynamic symbol lookup, find a
3978 matching RELATIVE relocation. */
3979 dyn_r_type
= r_type
;
3980 if (dynamic_symbol_p
)
3982 dynindx
= h
->dynindx
;
3983 addend
= rel
->r_addend
;
3990 case R_IA64_DIR32MSB
:
3991 dyn_r_type
= R_IA64_REL32MSB
;
3993 case R_IA64_DIR32LSB
:
3994 dyn_r_type
= R_IA64_REL32LSB
;
3996 case R_IA64_DIR64MSB
:
3997 dyn_r_type
= R_IA64_REL64MSB
;
3999 case R_IA64_DIR64LSB
:
4000 dyn_r_type
= R_IA64_REL64LSB
;
4010 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4011 srel
, rel
->r_offset
, dyn_r_type
,
4016 case R_IA64_LTV32MSB
:
4017 case R_IA64_LTV32LSB
:
4018 case R_IA64_LTV64MSB
:
4019 case R_IA64_LTV64LSB
:
4020 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4023 case R_IA64_GPREL22
:
4024 case R_IA64_GPREL64I
:
4025 case R_IA64_GPREL32MSB
:
4026 case R_IA64_GPREL32LSB
:
4027 case R_IA64_GPREL64MSB
:
4028 case R_IA64_GPREL64LSB
:
4029 if (dynamic_symbol_p
)
4032 /* xgettext:c-format */
4033 (_("%B: @gprel relocation against dynamic symbol %s"),
4035 h
? h
->root
.root
.string
4036 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4042 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4045 case R_IA64_LTOFF22
:
4046 case R_IA64_LTOFF22X
:
4047 case R_IA64_LTOFF64I
:
4048 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4049 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4050 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4052 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4055 case R_IA64_PLTOFF22
:
4056 case R_IA64_PLTOFF64I
:
4057 case R_IA64_PLTOFF64MSB
:
4058 case R_IA64_PLTOFF64LSB
:
4059 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4060 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, FALSE
);
4062 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4065 case R_IA64_FPTR64I
:
4066 case R_IA64_FPTR32MSB
:
4067 case R_IA64_FPTR32LSB
:
4068 case R_IA64_FPTR64MSB
:
4069 case R_IA64_FPTR64LSB
:
4070 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4071 if (dyn_i
->want_fptr
)
4073 if (!undef_weak_ref
)
4074 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4076 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4079 unsigned int dyn_r_type
= r_type
;
4080 bfd_vma addend
= rel
->r_addend
;
4082 /* Otherwise, we expect the dynamic linker to create
4085 if (dyn_i
->want_fptr
)
4087 if (r_type
== R_IA64_FPTR64I
)
4089 /* We can't represent this without a dynamic symbol.
4090 Adjust the relocation to be against an output
4091 section symbol, which are always present in the
4092 dynamic symbol table. */
4093 /* ??? People shouldn't be doing non-pic code in
4094 shared libraries. Hork. */
4096 (_("%B: linking non-pic code in a position independent executable"),
4103 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4107 if (h
->dynindx
!= -1)
4108 dynindx
= h
->dynindx
;
4110 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4111 (info
, h
->root
.u
.def
.section
->owner
,
4112 global_sym_index (h
)));
4117 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4118 (info
, input_bfd
, (long) r_symndx
));
4122 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4123 srel
, rel
->r_offset
, dyn_r_type
,
4127 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4130 case R_IA64_LTOFF_FPTR22
:
4131 case R_IA64_LTOFF_FPTR64I
:
4132 case R_IA64_LTOFF_FPTR32MSB
:
4133 case R_IA64_LTOFF_FPTR32LSB
:
4134 case R_IA64_LTOFF_FPTR64MSB
:
4135 case R_IA64_LTOFF_FPTR64LSB
:
4139 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4140 if (dyn_i
->want_fptr
)
4142 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4143 if (!undef_weak_ref
)
4144 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4149 /* Otherwise, we expect the dynamic linker to create
4153 if (h
->dynindx
!= -1)
4154 dynindx
= h
->dynindx
;
4156 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4157 (info
, h
->root
.u
.def
.section
->owner
,
4158 global_sym_index (h
)));
4161 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4162 (info
, input_bfd
, (long) r_symndx
));
4166 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4167 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4169 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4173 case R_IA64_PCREL32MSB
:
4174 case R_IA64_PCREL32LSB
:
4175 case R_IA64_PCREL64MSB
:
4176 case R_IA64_PCREL64LSB
:
4177 /* Install a dynamic relocation for this reloc. */
4178 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4180 BFD_ASSERT (srel
!= NULL
);
4182 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4183 srel
, rel
->r_offset
, r_type
,
4184 h
->dynindx
, rel
->r_addend
);
4188 case R_IA64_PCREL21B
:
4189 case R_IA64_PCREL60B
:
4190 /* We should have created a PLT entry for any dynamic symbol. */
4193 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4195 if (dyn_i
&& dyn_i
->want_plt2
)
4197 /* Should have caught this earlier. */
4198 BFD_ASSERT (rel
->r_addend
== 0);
4200 value
= (ia64_info
->root
.splt
->output_section
->vma
4201 + ia64_info
->root
.splt
->output_offset
4202 + dyn_i
->plt2_offset
);
4206 /* Since there's no PLT entry, Validate that this is
4208 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4210 /* If the symbol is undef_weak, we shouldn't be trying
4211 to call it. There's every chance that we'd wind up
4212 with an out-of-range fixup here. Don't bother setting
4213 any value at all. */
4219 case R_IA64_PCREL21BI
:
4220 case R_IA64_PCREL21F
:
4221 case R_IA64_PCREL21M
:
4222 case R_IA64_PCREL22
:
4223 case R_IA64_PCREL64I
:
4224 /* The PCREL21BI reloc is specifically not intended for use with
4225 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4226 fixup code, and thus probably ought not be dynamic. The
4227 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4228 if (dynamic_symbol_p
)
4232 if (r_type
== R_IA64_PCREL21BI
)
4233 /* xgettext:c-format */
4234 msg
= _("%B: @internal branch to dynamic symbol %s");
4235 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4236 /* xgettext:c-format */
4237 msg
= _("%B: speculation fixup to dynamic symbol %s");
4239 /* xgettext:c-format */
4240 msg
= _("%B: @pcrel relocation against dynamic symbol %s");
4241 _bfd_error_handler (msg
, input_bfd
,
4242 h
? h
->root
.root
.string
4243 : bfd_elf_sym_name (input_bfd
,
4253 /* Make pc-relative. */
4254 value
-= (input_section
->output_section
->vma
4255 + input_section
->output_offset
4256 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4257 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4260 case R_IA64_SEGREL32MSB
:
4261 case R_IA64_SEGREL32LSB
:
4262 case R_IA64_SEGREL64MSB
:
4263 case R_IA64_SEGREL64LSB
:
4265 /* Find the segment that contains the output_section. */
4266 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4267 (output_bfd
, input_section
->output_section
);
4271 r
= bfd_reloc_notsupported
;
4275 /* The VMA of the segment is the vaddr of the associated
4277 if (value
> p
->p_vaddr
)
4278 value
-= p
->p_vaddr
;
4281 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4286 case R_IA64_SECREL32MSB
:
4287 case R_IA64_SECREL32LSB
:
4288 case R_IA64_SECREL64MSB
:
4289 case R_IA64_SECREL64LSB
:
4290 /* Make output-section relative to section where the symbol
4291 is defined. PR 475 */
4293 value
-= sym_sec
->output_section
->vma
;
4294 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4297 case R_IA64_IPLTMSB
:
4298 case R_IA64_IPLTLSB
:
4299 /* Install a dynamic relocation for this reloc. */
4300 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4301 && (input_section
->flags
& SEC_ALLOC
) != 0)
4303 BFD_ASSERT (srel
!= NULL
);
4305 /* If we don't need dynamic symbol lookup, install two
4306 RELATIVE relocations. */
4307 if (!dynamic_symbol_p
)
4309 unsigned int dyn_r_type
;
4311 if (r_type
== R_IA64_IPLTMSB
)
4312 dyn_r_type
= R_IA64_REL64MSB
;
4314 dyn_r_type
= R_IA64_REL64LSB
;
4316 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4318 srel
, rel
->r_offset
,
4319 dyn_r_type
, 0, value
);
4320 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4322 srel
, rel
->r_offset
+ 8,
4323 dyn_r_type
, 0, gp_val
);
4326 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4327 srel
, rel
->r_offset
, r_type
,
4328 h
->dynindx
, rel
->r_addend
);
4331 if (r_type
== R_IA64_IPLTMSB
)
4332 r_type
= R_IA64_DIR64MSB
;
4334 r_type
= R_IA64_DIR64LSB
;
4335 ia64_elf_install_value (hit_addr
, value
, r_type
);
4336 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4339 case R_IA64_TPREL14
:
4340 case R_IA64_TPREL22
:
4341 case R_IA64_TPREL64I
:
4342 if (elf_hash_table (info
)->tls_sec
== NULL
)
4343 goto missing_tls_sec
;
4344 value
-= elfNN_ia64_tprel_base (info
);
4345 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4348 case R_IA64_DTPREL14
:
4349 case R_IA64_DTPREL22
:
4350 case R_IA64_DTPREL64I
:
4351 case R_IA64_DTPREL32LSB
:
4352 case R_IA64_DTPREL32MSB
:
4353 case R_IA64_DTPREL64LSB
:
4354 case R_IA64_DTPREL64MSB
:
4355 if (elf_hash_table (info
)->tls_sec
== NULL
)
4356 goto missing_tls_sec
;
4357 value
-= elfNN_ia64_dtprel_base (info
);
4358 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4361 case R_IA64_LTOFF_TPREL22
:
4362 case R_IA64_LTOFF_DTPMOD22
:
4363 case R_IA64_LTOFF_DTPREL22
:
4366 long dynindx
= h
? h
->dynindx
: -1;
4367 bfd_vma r_addend
= rel
->r_addend
;
4372 case R_IA64_LTOFF_TPREL22
:
4373 if (!dynamic_symbol_p
)
4375 if (elf_hash_table (info
)->tls_sec
== NULL
)
4376 goto missing_tls_sec
;
4377 if (!bfd_link_pic (info
))
4378 value
-= elfNN_ia64_tprel_base (info
);
4381 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4385 got_r_type
= R_IA64_TPREL64LSB
;
4387 case R_IA64_LTOFF_DTPMOD22
:
4388 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4390 got_r_type
= R_IA64_DTPMOD64LSB
;
4392 case R_IA64_LTOFF_DTPREL22
:
4393 if (!dynamic_symbol_p
)
4395 if (elf_hash_table (info
)->tls_sec
== NULL
)
4396 goto missing_tls_sec
;
4397 value
-= elfNN_ia64_dtprel_base (info
);
4399 got_r_type
= R_IA64_DTPRELNNLSB
;
4402 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4403 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4406 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4411 r
= bfd_reloc_notsupported
;
4420 case bfd_reloc_undefined
:
4421 /* This can happen for global table relative relocs if
4422 __gp is undefined. This is a panic situation so we
4423 don't try to continue. */
4424 (*info
->callbacks
->undefined_symbol
)
4425 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4428 case bfd_reloc_notsupported
:
4433 name
= h
->root
.root
.string
;
4435 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4437 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4439 input_section
, rel
->r_offset
);
4444 case bfd_reloc_dangerous
:
4445 case bfd_reloc_outofrange
:
4446 case bfd_reloc_overflow
:
4453 name
= h
->root
.root
.string
;
4455 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4460 case R_IA64_TPREL14
:
4461 case R_IA64_TPREL22
:
4462 case R_IA64_TPREL64I
:
4463 case R_IA64_DTPREL14
:
4464 case R_IA64_DTPREL22
:
4465 case R_IA64_DTPREL64I
:
4466 case R_IA64_DTPREL32LSB
:
4467 case R_IA64_DTPREL32MSB
:
4468 case R_IA64_DTPREL64LSB
:
4469 case R_IA64_DTPREL64MSB
:
4470 case R_IA64_LTOFF_TPREL22
:
4471 case R_IA64_LTOFF_DTPMOD22
:
4472 case R_IA64_LTOFF_DTPREL22
:
4474 /* xgettext:c-format */
4475 (_("%B: missing TLS section for relocation %s against `%s'"
4476 " at %#Lx in section `%A'."),
4477 input_bfd
, howto
->name
, name
,
4478 rel
->r_offset
, input_section
);
4481 case R_IA64_PCREL21B
:
4482 case R_IA64_PCREL21BI
:
4483 case R_IA64_PCREL21M
:
4484 case R_IA64_PCREL21F
:
4485 if (is_elf_hash_table (info
->hash
))
4487 /* Relaxtion is always performed for ELF output.
4488 Overflow failures for those relocations mean
4489 that the section is too big to relax. */
4491 /* xgettext:c-format */
4492 (_("%B: Can't relax br (%s) to `%s' at %#Lx"
4493 " in section `%A' with size %#Lx (> 0x1000000)."),
4494 input_bfd
, howto
->name
, name
, rel
->r_offset
,
4495 input_section
, input_section
->size
);
4500 (*info
->callbacks
->reloc_overflow
) (info
,
4521 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4522 struct bfd_link_info
*info
,
4523 struct elf_link_hash_entry
*h
,
4524 Elf_Internal_Sym
*sym
)
4526 struct elfNN_ia64_link_hash_table
*ia64_info
;
4527 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4529 ia64_info
= elfNN_ia64_hash_table (info
);
4530 if (ia64_info
== NULL
)
4533 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4535 /* Fill in the PLT data, if required. */
4536 if (dyn_i
&& dyn_i
->want_plt
)
4538 Elf_Internal_Rela outrel
;
4541 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4543 gp_val
= _bfd_get_gp_value (output_bfd
);
4545 /* Initialize the minimal PLT entry. */
4547 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4548 plt_sec
= ia64_info
->root
.splt
;
4549 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4551 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4552 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4553 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4555 plt_addr
= (plt_sec
->output_section
->vma
4556 + plt_sec
->output_offset
4557 + dyn_i
->plt_offset
);
4558 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, TRUE
);
4560 /* Initialize the FULL PLT entry, if needed. */
4561 if (dyn_i
->want_plt2
)
4563 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4565 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4566 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4568 /* Mark the symbol as undefined, rather than as defined in the
4569 plt section. Leave the value alone. */
4570 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4571 first place. But perhaps elflink.c did some for us. */
4572 if (!h
->def_regular
)
4573 sym
->st_shndx
= SHN_UNDEF
;
4576 /* Create the dynamic relocation. */
4577 outrel
.r_offset
= pltoff_addr
;
4578 if (bfd_little_endian (output_bfd
))
4579 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4581 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4582 outrel
.r_addend
= 0;
4584 /* This is fun. In the .IA_64.pltoff section, we've got entries
4585 that correspond both to real PLT entries, and those that
4586 happened to resolve to local symbols but need to be created
4587 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4588 relocations for the real PLT should come at the end of the
4589 section, so that they can be indexed by plt entry at runtime.
4591 We emitted all of the relocations for the non-PLT @pltoff
4592 entries during relocate_section. So we can consider the
4593 existing sec->reloc_count to be the base of the array of
4596 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4597 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4598 * sizeof (ElfNN_External_Rela
));
4599 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4602 /* Mark some specially defined symbols as absolute. */
4603 if (h
== ia64_info
->root
.hdynamic
4604 || h
== ia64_info
->root
.hgot
4605 || h
== ia64_info
->root
.hplt
)
4606 sym
->st_shndx
= SHN_ABS
;
4612 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4613 struct bfd_link_info
*info
)
4615 struct elfNN_ia64_link_hash_table
*ia64_info
;
4618 ia64_info
= elfNN_ia64_hash_table (info
);
4619 if (ia64_info
== NULL
)
4622 dynobj
= ia64_info
->root
.dynobj
;
4624 if (ia64_info
->root
.dynamic_sections_created
)
4626 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4627 asection
*sdyn
, *sgotplt
;
4630 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4631 sgotplt
= ia64_info
->root
.sgotplt
;
4632 BFD_ASSERT (sdyn
!= NULL
);
4633 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4634 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4636 gp_val
= _bfd_get_gp_value (abfd
);
4638 for (; dyncon
< dynconend
; dyncon
++)
4640 Elf_Internal_Dyn dyn
;
4642 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4647 dyn
.d_un
.d_ptr
= gp_val
;
4651 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4652 * sizeof (ElfNN_External_Rela
));
4656 /* See the comment above in finish_dynamic_symbol. */
4657 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4658 + ia64_info
->rel_pltoff_sec
->output_offset
4659 + (ia64_info
->rel_pltoff_sec
->reloc_count
4660 * sizeof (ElfNN_External_Rela
)));
4663 case DT_IA_64_PLT_RESERVE
:
4664 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4665 + sgotplt
->output_offset
);
4669 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4672 /* Initialize the PLT0 entry. */
4673 if (ia64_info
->root
.splt
)
4675 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4678 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4680 pltres
= (sgotplt
->output_section
->vma
4681 + sgotplt
->output_offset
4684 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4691 /* ELF file flag handling: */
4693 /* Function to keep IA-64 specific file flags. */
4695 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4697 BFD_ASSERT (!elf_flags_init (abfd
)
4698 || elf_elfheader (abfd
)->e_flags
== flags
);
4700 elf_elfheader (abfd
)->e_flags
= flags
;
4701 elf_flags_init (abfd
) = TRUE
;
4705 /* Merge backend specific data from an object file to the output
4706 object file when linking. */
4708 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4710 bfd
*obfd
= info
->output_bfd
;
4713 bfd_boolean ok
= TRUE
;
4715 /* Don't even pretend to support mixed-format linking. */
4716 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4717 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4720 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4721 out_flags
= elf_elfheader (obfd
)->e_flags
;
4723 if (! elf_flags_init (obfd
))
4725 elf_flags_init (obfd
) = TRUE
;
4726 elf_elfheader (obfd
)->e_flags
= in_flags
;
4728 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4729 && bfd_get_arch_info (obfd
)->the_default
)
4731 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4732 bfd_get_mach (ibfd
));
4738 /* Check flag compatibility. */
4739 if (in_flags
== out_flags
)
4742 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4743 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4744 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4746 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4749 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4752 bfd_set_error (bfd_error_bad_value
);
4755 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4758 (_("%B: linking big-endian files with little-endian files"),
4761 bfd_set_error (bfd_error_bad_value
);
4764 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4767 (_("%B: linking 64-bit files with 32-bit files"),
4770 bfd_set_error (bfd_error_bad_value
);
4773 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4776 (_("%B: linking constant-gp files with non-constant-gp files"),
4779 bfd_set_error (bfd_error_bad_value
);
4782 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4783 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4786 (_("%B: linking auto-pic files with non-auto-pic files"),
4789 bfd_set_error (bfd_error_bad_value
);
4797 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4799 FILE *file
= (FILE *) ptr
;
4800 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4802 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4804 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4805 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4806 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4807 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4808 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4809 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4810 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4811 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4812 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4814 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4818 static enum elf_reloc_type_class
4819 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4820 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4821 const Elf_Internal_Rela
*rela
)
4823 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4825 case R_IA64_REL32MSB
:
4826 case R_IA64_REL32LSB
:
4827 case R_IA64_REL64MSB
:
4828 case R_IA64_REL64LSB
:
4829 return reloc_class_relative
;
4830 case R_IA64_IPLTMSB
:
4831 case R_IA64_IPLTLSB
:
4832 return reloc_class_plt
;
4834 return reloc_class_copy
;
4836 return reloc_class_normal
;
4840 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4842 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4843 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4844 { NULL
, 0, 0, 0, 0 }
4848 elfNN_ia64_object_p (bfd
*abfd
)
4851 asection
*group
, *unwi
, *unw
;
4854 char *unwi_name
, *unw_name
;
4857 if (abfd
->flags
& DYNAMIC
)
4860 /* Flags for fake group section. */
4861 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4864 /* We add a fake section group for each .gnu.linkonce.t.* section,
4865 which isn't in a section group, and its unwind sections. */
4866 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4868 if (elf_sec_group (sec
) == NULL
4869 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4870 == (SEC_LINK_ONCE
| SEC_CODE
))
4871 && CONST_STRNEQ (sec
->name
, ".gnu.linkonce.t."))
4873 name
= sec
->name
+ 16;
4875 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4876 unwi_name
= bfd_alloc (abfd
, amt
);
4880 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4881 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4883 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4884 unw_name
= bfd_alloc (abfd
, amt
);
4888 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4889 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4891 /* We need to create a fake group section for it and its
4893 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4898 /* Move the fake group section to the beginning. */
4899 bfd_section_list_remove (abfd
, group
);
4900 bfd_section_list_prepend (abfd
, group
);
4902 elf_next_in_group (group
) = sec
;
4904 elf_group_name (sec
) = name
;
4905 elf_next_in_group (sec
) = sec
;
4906 elf_sec_group (sec
) = group
;
4910 elf_group_name (unwi
) = name
;
4911 elf_next_in_group (unwi
) = sec
;
4912 elf_next_in_group (sec
) = unwi
;
4913 elf_sec_group (unwi
) = group
;
4918 elf_group_name (unw
) = name
;
4921 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4922 elf_next_in_group (unwi
) = unw
;
4926 elf_next_in_group (unw
) = sec
;
4927 elf_next_in_group (sec
) = unw
;
4929 elf_sec_group (unw
) = group
;
4932 /* Fake SHT_GROUP section header. */
4933 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4934 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4941 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4943 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4944 return (vec
== &ia64_elfNN_hpux_be_vec
);
4948 elfNN_hpux_post_process_headers (bfd
*abfd
,
4949 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
4951 Elf_Internal_Ehdr
*i_ehdrp
= elf_elfheader (abfd
);
4953 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4954 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4958 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4959 asection
*sec
, int *retval
)
4961 if (bfd_is_com_section (sec
))
4963 *retval
= SHN_IA_64_ANSI_COMMON
;
4970 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4973 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
4975 switch (elfsym
->internal_elf_sym
.st_shndx
)
4977 case SHN_IA_64_ANSI_COMMON
:
4978 asym
->section
= bfd_com_section_ptr
;
4979 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
4980 asym
->flags
&= ~BSF_GLOBAL
;
4985 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4986 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4987 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4988 #define TARGET_BIG_NAME "elfNN-ia64-big"
4989 #define ELF_ARCH bfd_arch_ia64
4990 #define ELF_TARGET_ID IA64_ELF_DATA
4991 #define ELF_MACHINE_CODE EM_IA_64
4992 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4993 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4994 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4995 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4997 #define elf_backend_section_from_shdr \
4998 elfNN_ia64_section_from_shdr
4999 #define elf_backend_section_flags \
5000 elfNN_ia64_section_flags
5001 #define elf_backend_fake_sections \
5002 elfNN_ia64_fake_sections
5003 #define elf_backend_final_write_processing \
5004 elfNN_ia64_final_write_processing
5005 #define elf_backend_add_symbol_hook \
5006 elfNN_ia64_add_symbol_hook
5007 #define elf_backend_additional_program_headers \
5008 elfNN_ia64_additional_program_headers
5009 #define elf_backend_modify_segment_map \
5010 elfNN_ia64_modify_segment_map
5011 #define elf_backend_modify_program_headers \
5012 elfNN_ia64_modify_program_headers
5013 #define elf_info_to_howto \
5014 elfNN_ia64_info_to_howto
5016 #define bfd_elfNN_bfd_reloc_type_lookup \
5017 ia64_elf_reloc_type_lookup
5018 #define bfd_elfNN_bfd_reloc_name_lookup \
5019 ia64_elf_reloc_name_lookup
5020 #define bfd_elfNN_bfd_is_local_label_name \
5021 elfNN_ia64_is_local_label_name
5022 #define bfd_elfNN_bfd_relax_section \
5023 elfNN_ia64_relax_section
5025 #define elf_backend_object_p \
5028 /* Stuff for the BFD linker: */
5029 #define bfd_elfNN_bfd_link_hash_table_create \
5030 elfNN_ia64_hash_table_create
5031 #define elf_backend_create_dynamic_sections \
5032 elfNN_ia64_create_dynamic_sections
5033 #define elf_backend_check_relocs \
5034 elfNN_ia64_check_relocs
5035 #define elf_backend_adjust_dynamic_symbol \
5036 elfNN_ia64_adjust_dynamic_symbol
5037 #define elf_backend_size_dynamic_sections \
5038 elfNN_ia64_size_dynamic_sections
5039 #define elf_backend_omit_section_dynsym \
5040 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5041 #define elf_backend_relocate_section \
5042 elfNN_ia64_relocate_section
5043 #define elf_backend_finish_dynamic_symbol \
5044 elfNN_ia64_finish_dynamic_symbol
5045 #define elf_backend_finish_dynamic_sections \
5046 elfNN_ia64_finish_dynamic_sections
5047 #define bfd_elfNN_bfd_final_link \
5048 elfNN_ia64_final_link
5050 #define bfd_elfNN_bfd_merge_private_bfd_data \
5051 elfNN_ia64_merge_private_bfd_data
5052 #define bfd_elfNN_bfd_set_private_flags \
5053 elfNN_ia64_set_private_flags
5054 #define bfd_elfNN_bfd_print_private_bfd_data \
5055 elfNN_ia64_print_private_bfd_data
5057 #define elf_backend_plt_readonly 1
5058 #define elf_backend_want_plt_sym 0
5059 #define elf_backend_plt_alignment 5
5060 #define elf_backend_got_header_size 0
5061 #define elf_backend_want_got_plt 1
5062 #define elf_backend_may_use_rel_p 1
5063 #define elf_backend_may_use_rela_p 1
5064 #define elf_backend_default_use_rela_p 1
5065 #define elf_backend_want_dynbss 0
5066 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5067 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5068 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5069 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5070 #define elf_backend_rela_normal 1
5071 #define elf_backend_dtrel_excludes_plt 1
5072 #define elf_backend_special_sections elfNN_ia64_special_sections
5073 #define elf_backend_default_execstack 0
5075 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5076 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5077 We don't want to flood users with so many error messages. We turn
5078 off the warning for now. It will be turned on later when the Intel
5079 compiler is fixed. */
5080 #define elf_backend_link_order_error_handler NULL
5082 #include "elfNN-target.h"
5084 /* HPUX-specific vectors. */
5086 #undef TARGET_LITTLE_SYM
5087 #undef TARGET_LITTLE_NAME
5088 #undef TARGET_BIG_SYM
5089 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5090 #undef TARGET_BIG_NAME
5091 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5093 /* These are HP-UX specific functions. */
5095 #undef elf_backend_post_process_headers
5096 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5098 #undef elf_backend_section_from_bfd_section
5099 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5101 #undef elf_backend_symbol_processing
5102 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5104 #undef elf_backend_want_p_paddr_set_to_zero
5105 #define elf_backend_want_p_paddr_set_to_zero 1
5107 #undef ELF_COMMONPAGESIZE
5109 #define ELF_OSABI ELFOSABI_HPUX
5112 #define elfNN_bed elfNN_ia64_hpux_bed
5114 #include "elfNN-target.h"