1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2023 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 "elfxx-ia64.h"
35 #define LOG_SECTION_ALIGN 3
39 #define LOG_SECTION_ALIGN 2
42 #define is_ia64_elf(bfd) \
43 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
44 && elf_object_id (bfd) == IA64_ELF_DATA)
46 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
47 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
49 /* In dynamically (linker-) created sections, we generally need to keep track
50 of the place a symbol or expression got allocated to. This is done via hash
51 tables that store entries of the following type. */
53 struct elfNN_ia64_dyn_sym_info
55 /* The addend for which this entry is relevant. */
60 bfd_vma pltoff_offset
;
64 bfd_vma dtpmod_offset
;
65 bfd_vma dtprel_offset
;
67 /* The symbol table entry, if any, that this was derived from. */
68 struct elf_link_hash_entry
*h
;
70 /* Used to count non-got, non-plt relocations for delayed sizing
71 of relocation sections. */
72 struct elfNN_ia64_dyn_reloc_entry
74 struct elfNN_ia64_dyn_reloc_entry
*next
;
79 /* Is this reloc against readonly section? */
83 /* TRUE when the section contents have been updated. */
84 unsigned got_done
: 1;
85 unsigned fptr_done
: 1;
86 unsigned pltoff_done
: 1;
87 unsigned tprel_done
: 1;
88 unsigned dtpmod_done
: 1;
89 unsigned dtprel_done
: 1;
91 /* TRUE for the different kinds of linker data we want created. */
92 unsigned want_got
: 1;
93 unsigned want_gotx
: 1;
94 unsigned want_fptr
: 1;
95 unsigned want_ltoff_fptr
: 1;
96 unsigned want_plt
: 1;
97 unsigned want_plt2
: 1;
98 unsigned want_pltoff
: 1;
99 unsigned want_tprel
: 1;
100 unsigned want_dtpmod
: 1;
101 unsigned want_dtprel
: 1;
104 struct elfNN_ia64_local_hash_entry
108 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
110 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
111 unsigned int sorted_count
;
112 /* The size of elfNN_ia64_dyn_sym_info array. */
114 /* The array of elfNN_ia64_dyn_sym_info. */
115 struct elfNN_ia64_dyn_sym_info
*info
;
117 /* TRUE if this hash entry's addends was translated for
118 SHF_MERGE optimization. */
119 unsigned sec_merge_done
: 1;
122 struct elfNN_ia64_link_hash_entry
124 struct elf_link_hash_entry root
;
125 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
127 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
128 unsigned int sorted_count
;
129 /* The size of elfNN_ia64_dyn_sym_info array. */
131 /* The array of elfNN_ia64_dyn_sym_info. */
132 struct elfNN_ia64_dyn_sym_info
*info
;
135 struct elfNN_ia64_link_hash_table
137 /* The main hash table. */
138 struct elf_link_hash_table root
;
140 asection
*fptr_sec
; /* Function descriptor table (or NULL). */
141 asection
*rel_fptr_sec
; /* Dynamic relocation section for same. */
142 asection
*pltoff_sec
; /* Private descriptors for plt (or NULL). */
143 asection
*rel_pltoff_sec
; /* Dynamic relocation section for same. */
145 bfd_size_type minplt_entries
; /* Number of minplt entries. */
146 unsigned self_dtpmod_done
: 1;/* Has self DTPMOD entry been finished? */
147 bfd_vma self_dtpmod_offset
; /* .got offset to self DTPMOD entry. */
148 /* There are maybe R_IA64_GPREL22 relocations, including those
149 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
150 sections. We need to record those sections so that we can choose
151 a proper GP to cover all R_IA64_GPREL22 relocations. */
152 asection
*max_short_sec
; /* Maximum short output section. */
153 bfd_vma max_short_offset
; /* Maximum short offset. */
154 asection
*min_short_sec
; /* Minimum short output section. */
155 bfd_vma min_short_offset
; /* Minimum short offset. */
157 htab_t loc_hash_table
;
158 void *loc_hash_memory
;
161 struct elfNN_ia64_allocate_data
163 struct bfd_link_info
*info
;
168 #define elfNN_ia64_hash_table(p) \
169 ((is_elf_hash_table ((p)->hash) \
170 && elf_hash_table_id (elf_hash_table (p)) == IA64_ELF_DATA) \
171 ? (struct elfNN_ia64_link_hash_table *) (p)->hash : NULL)
173 static struct elfNN_ia64_dyn_sym_info
* get_dyn_sym_info
174 (struct elfNN_ia64_link_hash_table
*ia64_info
,
175 struct elf_link_hash_entry
*h
,
176 bfd
*abfd
, const Elf_Internal_Rela
*rel
, bool create
);
177 static bool elfNN_ia64_dynamic_symbol_p
178 (struct elf_link_hash_entry
*h
, struct bfd_link_info
*info
, int);
179 static bool elfNN_ia64_choose_gp
180 (bfd
*abfd
, struct bfd_link_info
*info
, bool final
);
181 static void elfNN_ia64_dyn_sym_traverse
182 (struct elfNN_ia64_link_hash_table
*ia64_info
,
183 bool (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
185 static bool allocate_global_data_got
186 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
187 static bool allocate_global_fptr_got
188 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
189 static bool allocate_local_got
190 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
191 static bool elfNN_ia64_hpux_vec
192 (const bfd_target
*vec
);
193 static bool allocate_dynrel_entries
194 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
195 static asection
*get_pltoff
196 (bfd
*abfd
, struct bfd_link_info
*info
,
197 struct elfNN_ia64_link_hash_table
*ia64_info
);
199 /* ia64-specific relocation. */
201 /* Given a ELF reloc, return the matching HOWTO structure. */
204 elfNN_ia64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
206 Elf_Internal_Rela
*elf_reloc
)
208 unsigned int r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
210 bfd_reloc
->howto
= ia64_elf_lookup_howto (r_type
);
211 if (bfd_reloc
->howto
== NULL
)
213 /* xgettext:c-format */
214 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
216 bfd_set_error (bfd_error_bad_value
);
223 #define PLT_HEADER_SIZE (3 * 16)
224 #define PLT_MIN_ENTRY_SIZE (1 * 16)
225 #define PLT_FULL_ENTRY_SIZE (2 * 16)
226 #define PLT_RESERVED_WORDS 3
228 static const bfd_byte plt_header
[PLT_HEADER_SIZE
] =
230 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
231 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
232 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
233 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
234 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
235 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
236 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
237 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
238 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
241 static const bfd_byte plt_min_entry
[PLT_MIN_ENTRY_SIZE
] =
243 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
244 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
245 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
248 static const bfd_byte plt_full_entry
[PLT_FULL_ENTRY_SIZE
] =
250 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
251 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
252 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
253 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
254 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
255 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
258 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
260 static const bfd_byte oor_brl
[16] =
262 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
263 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
264 0x00, 0x00, 0x00, 0xc0
267 static const bfd_byte oor_ip
[48] =
269 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
270 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
271 0x01, 0x00, 0x00, 0x60,
272 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
273 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
274 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
275 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
276 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
277 0x60, 0x00, 0x80, 0x00 /* br b6;; */
280 static size_t oor_branch_size
= sizeof (oor_brl
);
283 bfd_elfNN_ia64_after_parse (int itanium
)
285 oor_branch_size
= itanium
? sizeof (oor_ip
) : sizeof (oor_brl
);
289 /* Rename some of the generic section flags to better document how they
291 #define skip_relax_pass_0 sec_flg0
292 #define skip_relax_pass_1 sec_flg1
294 /* These functions do relaxation for IA-64 ELF. */
297 elfNN_ia64_update_short_info (asection
*sec
, bfd_vma offset
,
298 struct elfNN_ia64_link_hash_table
*ia64_info
)
300 /* Skip ABS and SHF_IA_64_SHORT sections. */
301 if (sec
== bfd_abs_section_ptr
302 || (sec
->flags
& SEC_SMALL_DATA
) != 0)
305 if (!ia64_info
->min_short_sec
)
307 ia64_info
->max_short_sec
= sec
;
308 ia64_info
->max_short_offset
= offset
;
309 ia64_info
->min_short_sec
= sec
;
310 ia64_info
->min_short_offset
= offset
;
312 else if (sec
== ia64_info
->max_short_sec
313 && offset
> ia64_info
->max_short_offset
)
314 ia64_info
->max_short_offset
= offset
;
315 else if (sec
== ia64_info
->min_short_sec
316 && offset
< ia64_info
->min_short_offset
)
317 ia64_info
->min_short_offset
= offset
;
318 else if (sec
->output_section
->vma
319 > ia64_info
->max_short_sec
->vma
)
321 ia64_info
->max_short_sec
= sec
;
322 ia64_info
->max_short_offset
= offset
;
324 else if (sec
->output_section
->vma
325 < ia64_info
->min_short_sec
->vma
)
327 ia64_info
->min_short_sec
= sec
;
328 ia64_info
->min_short_offset
= offset
;
333 elfNN_ia64_relax_section (bfd
*abfd
, asection
*sec
,
334 struct bfd_link_info
*link_info
,
339 struct one_fixup
*next
;
345 Elf_Internal_Shdr
*symtab_hdr
;
346 Elf_Internal_Rela
*internal_relocs
;
347 Elf_Internal_Rela
*irel
, *irelend
;
349 Elf_Internal_Sym
*isymbuf
= NULL
;
350 struct elfNN_ia64_link_hash_table
*ia64_info
;
351 struct one_fixup
*fixups
= NULL
;
352 bool changed_contents
= false;
353 bool changed_relocs
= false;
354 bool changed_got
= false;
355 bool skip_relax_pass_0
= true;
356 bool skip_relax_pass_1
= true;
359 /* Assume we're not going to change any sizes, and we'll only need
363 if (bfd_link_relocatable (link_info
))
364 (*link_info
->callbacks
->einfo
)
365 (_("%P%F: --relax and -r may not be used together\n"));
367 /* Don't even try to relax for non-ELF outputs. */
368 if (!is_elf_hash_table (link_info
->hash
))
371 /* Nothing to do if there are no relocations or there is no need for
373 if ((sec
->flags
& SEC_RELOC
) == 0
374 || sec
->reloc_count
== 0
375 || (link_info
->relax_pass
== 0 && sec
->skip_relax_pass_0
)
376 || (link_info
->relax_pass
== 1 && sec
->skip_relax_pass_1
))
379 ia64_info
= elfNN_ia64_hash_table (link_info
);
380 if (ia64_info
== NULL
)
383 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
385 /* Load the relocations for this section. */
386 internal_relocs
= (_bfd_elf_link_read_relocs
387 (abfd
, sec
, NULL
, (Elf_Internal_Rela
*) NULL
,
388 link_info
->keep_memory
));
389 if (internal_relocs
== NULL
)
392 irelend
= internal_relocs
+ sec
->reloc_count
;
394 /* Get the section contents. */
395 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
396 contents
= elf_section_data (sec
)->this_hdr
.contents
;
399 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
403 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
405 unsigned long r_type
= ELFNN_R_TYPE (irel
->r_info
);
406 bfd_vma symaddr
, reladdr
, trampoff
, toff
, roff
;
411 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
416 case R_IA64_PCREL21B
:
417 case R_IA64_PCREL21BI
:
418 case R_IA64_PCREL21M
:
419 case R_IA64_PCREL21F
:
420 /* In pass 1, all br relaxations are done. We can skip it. */
421 if (link_info
->relax_pass
== 1)
423 skip_relax_pass_0
= false;
427 case R_IA64_PCREL60B
:
428 /* We can't optimize brl to br in pass 0 since br relaxations
429 will increase the code size. Defer it to pass 1. */
430 if (link_info
->relax_pass
== 0)
432 skip_relax_pass_1
= false;
439 /* Update max_short_sec/min_short_sec. */
441 case R_IA64_LTOFF22X
:
443 /* We can't relax ldx/mov in pass 0 since br relaxations will
444 increase the code size. Defer it to pass 1. */
445 if (link_info
->relax_pass
== 0)
447 skip_relax_pass_1
= false;
457 /* Get the value of the symbol referred to by the reloc. */
458 if (ELFNN_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
460 /* A local symbol. */
461 Elf_Internal_Sym
*isym
;
463 /* Read this BFD's local symbols. */
466 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
468 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
469 symtab_hdr
->sh_info
, 0,
475 isym
= isymbuf
+ ELFNN_R_SYM (irel
->r_info
);
476 if (isym
->st_shndx
== SHN_UNDEF
)
477 continue; /* We can't do anything with undefined symbols. */
478 else if (isym
->st_shndx
== SHN_ABS
)
479 tsec
= bfd_abs_section_ptr
;
480 else if (isym
->st_shndx
== SHN_COMMON
)
481 tsec
= bfd_com_section_ptr
;
482 else if (isym
->st_shndx
== SHN_IA_64_ANSI_COMMON
)
483 tsec
= bfd_com_section_ptr
;
485 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
487 toff
= isym
->st_value
;
488 dyn_i
= get_dyn_sym_info (ia64_info
, NULL
, abfd
, irel
, false);
489 symtype
= ELF_ST_TYPE (isym
->st_info
);
494 struct elf_link_hash_entry
*h
;
496 indx
= ELFNN_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
497 h
= elf_sym_hashes (abfd
)[indx
];
498 BFD_ASSERT (h
!= NULL
);
500 while (h
->root
.type
== bfd_link_hash_indirect
501 || h
->root
.type
== bfd_link_hash_warning
)
502 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
504 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, irel
, false);
506 /* For branches to dynamic symbols, we're interested instead
507 in a branch to the PLT entry. */
508 if (is_branch
&& dyn_i
&& dyn_i
->want_plt2
)
510 /* Internal branches shouldn't be sent to the PLT.
511 Leave this for now and we'll give an error later. */
512 if (r_type
!= R_IA64_PCREL21B
)
515 tsec
= ia64_info
->root
.splt
;
516 toff
= dyn_i
->plt2_offset
;
517 BFD_ASSERT (irel
->r_addend
== 0);
520 /* Can't do anything else with dynamic symbols. */
521 else if (elfNN_ia64_dynamic_symbol_p (h
, link_info
, r_type
))
526 /* We can't do anything with undefined symbols. */
527 if (h
->root
.type
== bfd_link_hash_undefined
528 || h
->root
.type
== bfd_link_hash_undefweak
)
531 tsec
= h
->root
.u
.def
.section
;
532 toff
= h
->root
.u
.def
.value
;
538 if (tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
540 /* At this stage in linking, no SEC_MERGE symbol has been
541 adjusted, so all references to such symbols need to be
542 passed through _bfd_merged_section_offset. (Later, in
543 relocate_section, all SEC_MERGE symbols *except* for
544 section symbols have been adjusted.)
546 gas may reduce relocations against symbols in SEC_MERGE
547 sections to a relocation against the section symbol when
548 the original addend was zero. When the reloc is against
549 a section symbol we should include the addend in the
550 offset passed to _bfd_merged_section_offset, since the
551 location of interest is the original symbol. On the
552 other hand, an access to "sym+addend" where "sym" is not
553 a section symbol should not include the addend; Such an
554 access is presumed to be an offset from "sym"; The
555 location of interest is just "sym". */
556 if (symtype
== STT_SECTION
)
557 toff
+= irel
->r_addend
;
559 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
560 elf_section_data (tsec
)->sec_info
,
563 if (symtype
!= STT_SECTION
)
564 toff
+= irel
->r_addend
;
567 toff
+= irel
->r_addend
;
569 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
571 roff
= irel
->r_offset
;
575 bfd_signed_vma offset
;
577 reladdr
= (sec
->output_section
->vma
579 + roff
) & (bfd_vma
) -4;
581 /* The .plt section is aligned at 32byte and the .text section
582 is aligned at 64byte. The .text section is right after the
583 .plt section. After the first relaxation pass, linker may
584 increase the gap between the .plt and .text sections up
585 to 32byte. We assume linker will always insert 32byte
586 between the .plt and .text sections after the first
588 if (tsec
== ia64_info
->root
.splt
)
589 offset
= -0x1000000 + 32;
593 /* If the branch is in range, no need to do anything. */
594 if ((bfd_signed_vma
) (symaddr
- reladdr
) >= offset
595 && (bfd_signed_vma
) (symaddr
- reladdr
) <= 0x0FFFFF0)
597 /* If the 60-bit branch is in 21-bit range, optimize it. */
598 if (r_type
== R_IA64_PCREL60B
)
600 ia64_elf_relax_brl (contents
, roff
);
603 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
606 /* If the original relocation offset points to slot
607 1, change it to slot 2. */
608 if ((irel
->r_offset
& 3) == 1)
611 changed_contents
= true;
612 changed_relocs
= true;
617 else if (r_type
== R_IA64_PCREL60B
)
619 else if (ia64_elf_relax_br (contents
, roff
))
622 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
625 /* Make the relocation offset point to slot 1. */
626 irel
->r_offset
= (irel
->r_offset
& ~((bfd_vma
) 0x3)) + 1;
628 changed_contents
= true;
629 changed_relocs
= true;
633 /* We can't put a trampoline in a .init/.fini section. Issue
635 if (strcmp (sec
->output_section
->name
, ".init") == 0
636 || strcmp (sec
->output_section
->name
, ".fini") == 0)
639 /* xgettext:c-format */
640 (_("%pB: can't relax br at %#" PRIx64
" in section `%pA';"
641 " please use brl or indirect branch"),
642 sec
->owner
, (uint64_t) roff
, sec
);
643 bfd_set_error (bfd_error_bad_value
);
647 /* If the branch and target are in the same section, you've
648 got one honking big section and we can't help you unless
649 you are branching backwards. You'll get an error message
651 if (tsec
== sec
&& toff
> roff
)
654 /* Look for an existing fixup to this address. */
655 for (f
= fixups
; f
; f
= f
->next
)
656 if (f
->tsec
== tsec
&& f
->toff
== toff
)
661 /* Two alternatives: If it's a branch to a PLT entry, we can
662 make a copy of the FULL_PLT entry. Otherwise, we'll have
663 to use a `brl' insn to get where we're going. */
667 if (tsec
== ia64_info
->root
.splt
)
668 size
= sizeof (plt_full_entry
);
670 size
= oor_branch_size
;
672 /* Resize the current section to make room for the new branch. */
673 trampoff
= (sec
->size
+ 15) & (bfd_vma
) -16;
675 /* If trampoline is out of range, there is nothing we
677 offset
= trampoff
- (roff
& (bfd_vma
) -4);
678 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
681 amt
= trampoff
+ size
;
682 contents
= (bfd_byte
*) bfd_realloc (contents
, amt
);
683 if (contents
== NULL
)
687 if (tsec
== ia64_info
->root
.splt
)
689 memcpy (contents
+ trampoff
, plt_full_entry
, size
);
691 /* Hijack the old relocation for use as the PLTOFF reloc. */
692 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
694 irel
->r_offset
= trampoff
;
698 if (size
== sizeof (oor_ip
))
700 memcpy (contents
+ trampoff
, oor_ip
, size
);
701 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
703 irel
->r_addend
-= 16;
704 irel
->r_offset
= trampoff
+ 2;
708 memcpy (contents
+ trampoff
, oor_brl
, size
);
709 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
711 irel
->r_offset
= trampoff
+ 2;
716 /* Record the fixup so we don't do it again this section. */
717 f
= (struct one_fixup
*)
718 bfd_malloc ((bfd_size_type
) sizeof (*f
));
722 f
->trampoff
= trampoff
;
727 /* If trampoline is out of range, there is nothing we
729 offset
= f
->trampoff
- (roff
& (bfd_vma
) -4);
730 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
733 /* Nop out the reloc, since we're finalizing things here. */
734 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
737 /* Fix up the existing branch to hit the trampoline. */
738 if (ia64_elf_install_value (contents
+ roff
, offset
, r_type
)
742 changed_contents
= true;
743 changed_relocs
= true;
750 bfd
*obfd
= sec
->output_section
->owner
;
751 gp
= _bfd_get_gp_value (obfd
);
754 if (!elfNN_ia64_choose_gp (obfd
, link_info
, false))
756 gp
= _bfd_get_gp_value (obfd
);
760 /* If the data is out of range, do nothing. */
761 if ((bfd_signed_vma
) (symaddr
- gp
) >= 0x200000
762 ||(bfd_signed_vma
) (symaddr
- gp
) < -0x200000)
765 if (r_type
== R_IA64_GPREL22
)
766 elfNN_ia64_update_short_info (tsec
->output_section
,
767 tsec
->output_offset
+ toff
,
769 else if (r_type
== R_IA64_LTOFF22X
)
771 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
773 changed_relocs
= true;
774 if (dyn_i
->want_gotx
)
776 dyn_i
->want_gotx
= 0;
777 changed_got
|= !dyn_i
->want_got
;
780 elfNN_ia64_update_short_info (tsec
->output_section
,
781 tsec
->output_offset
+ toff
,
786 ia64_elf_relax_ldxmov (contents
, roff
);
787 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
788 changed_contents
= true;
789 changed_relocs
= true;
794 /* ??? If we created fixups, this may push the code segment large
795 enough that the data segment moves, which will change the GP.
796 Reset the GP so that we re-calculate next round. We need to
797 do this at the _beginning_ of the next round; now will not do. */
799 /* Clean up and go home. */
802 struct one_fixup
*f
= fixups
;
803 fixups
= fixups
->next
;
808 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
810 if (! link_info
->keep_memory
)
814 /* Cache the symbols for elf_link_input_bfd. */
815 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
820 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
822 if (!changed_contents
&& !link_info
->keep_memory
)
826 /* Cache the section contents for elf_link_input_bfd. */
827 elf_section_data (sec
)->this_hdr
.contents
= contents
;
831 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
834 free (internal_relocs
);
836 elf_section_data (sec
)->relocs
= internal_relocs
;
841 struct elfNN_ia64_allocate_data data
;
842 data
.info
= link_info
;
844 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
846 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
847 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
848 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
849 ia64_info
->root
.sgot
->size
= data
.ofs
;
851 if (ia64_info
->root
.dynamic_sections_created
852 && ia64_info
->root
.srelgot
!= NULL
)
854 /* Resize .rela.got. */
855 ia64_info
->root
.srelgot
->size
= 0;
856 if (bfd_link_pic (link_info
)
857 && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
858 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
859 data
.only_got
= true;
860 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
,
865 if (link_info
->relax_pass
== 0)
867 /* Pass 0 is only needed to relax br. */
868 sec
->skip_relax_pass_0
= skip_relax_pass_0
;
869 sec
->skip_relax_pass_1
= skip_relax_pass_1
;
872 *again
= changed_contents
|| changed_relocs
;
876 if ((unsigned char *) isymbuf
!= symtab_hdr
->contents
)
878 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
880 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
881 free (internal_relocs
);
884 #undef skip_relax_pass_0
885 #undef skip_relax_pass_1
887 /* Return TRUE if NAME is an unwind table section name. */
890 is_unwind_section_name (bfd
*abfd
, const char *name
)
892 if (elfNN_ia64_hpux_vec (abfd
->xvec
)
893 && !strcmp (name
, ELF_STRING_ia64_unwind_hdr
))
896 return ((startswith (name
, ELF_STRING_ia64_unwind
)
897 && ! startswith (name
, ELF_STRING_ia64_unwind_info
))
898 || startswith (name
, ELF_STRING_ia64_unwind_once
));
901 /* Handle an IA-64 specific section when reading an object file. This
902 is called when bfd_section_from_shdr finds a section with an unknown
906 elfNN_ia64_section_from_shdr (bfd
*abfd
,
907 Elf_Internal_Shdr
*hdr
,
911 /* There ought to be a place to keep ELF backend specific flags, but
912 at the moment there isn't one. We just keep track of the
913 sections by their name, instead. Fortunately, the ABI gives
914 suggested names for all the MIPS specific sections, so we will
915 probably get away with this. */
916 switch (hdr
->sh_type
)
918 case SHT_IA_64_UNWIND
:
919 case SHT_IA_64_HP_OPT_ANOT
:
923 if (strcmp (name
, ELF_STRING_ia64_archext
) != 0)
931 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
937 /* Convert IA-64 specific section flags to bfd internal section flags. */
939 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
943 elfNN_ia64_section_flags (const Elf_Internal_Shdr
*hdr
)
945 if (hdr
->sh_flags
& SHF_IA_64_SHORT
)
946 hdr
->bfd_section
->flags
|= SEC_SMALL_DATA
;
951 /* Set the correct type for an IA-64 ELF section. We do this by the
952 section name, which is a hack, but ought to work. */
955 elfNN_ia64_fake_sections (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
960 name
= bfd_section_name (sec
);
962 if (is_unwind_section_name (abfd
, name
))
964 /* We don't have the sections numbered at this point, so sh_info
965 is set later, in elfNN_ia64_final_write_processing. */
966 hdr
->sh_type
= SHT_IA_64_UNWIND
;
967 hdr
->sh_flags
|= SHF_LINK_ORDER
;
969 else if (strcmp (name
, ELF_STRING_ia64_archext
) == 0)
970 hdr
->sh_type
= SHT_IA_64_EXT
;
971 else if (strcmp (name
, ".HP.opt_annot") == 0)
972 hdr
->sh_type
= SHT_IA_64_HP_OPT_ANOT
;
973 else if (strcmp (name
, ".reloc") == 0)
974 /* This is an ugly, but unfortunately necessary hack that is
975 needed when producing EFI binaries on IA-64. It tells
976 elf.c:elf_fake_sections() not to consider ".reloc" as a section
977 containing ELF relocation info. We need this hack in order to
978 be able to generate ELF binaries that can be translated into
979 EFI applications (which are essentially COFF objects). Those
980 files contain a COFF ".reloc" section inside an ELFNN object,
981 which would normally cause BFD to segfault because it would
982 attempt to interpret this section as containing relocation
983 entries for section "oc". With this hack enabled, ".reloc"
984 will be treated as a normal data section, which will avoid the
985 segfault. However, you won't be able to create an ELFNN binary
986 with a section named "oc" that needs relocations, but that's
987 the kind of ugly side-effects you get when detecting section
988 types based on their names... In practice, this limitation is
990 hdr
->sh_type
= SHT_PROGBITS
;
992 if (sec
->flags
& SEC_SMALL_DATA
)
993 hdr
->sh_flags
|= SHF_IA_64_SHORT
;
995 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
997 if (elfNN_ia64_hpux_vec (abfd
->xvec
) && (sec
->flags
& SHF_TLS
))
998 hdr
->sh_flags
|= SHF_IA_64_HP_TLS
;
1003 /* The final processing done just before writing out an IA-64 ELF
1007 elfNN_ia64_final_write_processing (bfd
*abfd
)
1009 Elf_Internal_Shdr
*hdr
;
1012 for (s
= abfd
->sections
; s
; s
= s
->next
)
1014 hdr
= &elf_section_data (s
)->this_hdr
;
1015 switch (hdr
->sh_type
)
1017 case SHT_IA_64_UNWIND
:
1018 /* The IA-64 processor-specific ABI requires setting sh_link
1019 to the unwind section, whereas HP-UX requires sh_info to
1020 do so. For maximum compatibility, we'll set both for
1022 hdr
->sh_info
= hdr
->sh_link
;
1027 if (! elf_flags_init (abfd
))
1029 unsigned long flags
= 0;
1031 if (abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
)
1032 flags
|= EF_IA_64_BE
;
1033 if (bfd_get_mach (abfd
) == bfd_mach_ia64_elf64
)
1034 flags
|= EF_IA_64_ABI64
;
1036 elf_elfheader(abfd
)->e_flags
= flags
;
1037 elf_flags_init (abfd
) = true;
1039 return _bfd_elf_final_write_processing (abfd
);
1042 /* Hook called by the linker routine which adds symbols from an object
1043 file. We use it to put .comm items in .sbss, and not .bss. */
1046 elfNN_ia64_add_symbol_hook (bfd
*abfd
,
1047 struct bfd_link_info
*info
,
1048 Elf_Internal_Sym
*sym
,
1049 const char **namep ATTRIBUTE_UNUSED
,
1050 flagword
*flagsp ATTRIBUTE_UNUSED
,
1054 if (sym
->st_shndx
== SHN_COMMON
1055 && !bfd_link_relocatable (info
)
1056 && sym
->st_size
<= elf_gp_size (abfd
))
1058 /* Common symbols less than or equal to -G nn bytes are
1059 automatically put into .sbss. */
1061 asection
*scomm
= bfd_get_section_by_name (abfd
, ".scommon");
1065 scomm
= bfd_make_section_with_flags (abfd
, ".scommon",
1069 | SEC_LINKER_CREATED
));
1075 *valp
= sym
->st_size
;
1081 /* Return the number of additional phdrs we will need. */
1084 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1085 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1090 /* See if we need a PT_IA_64_ARCHEXT segment. */
1091 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1092 if (s
&& (s
->flags
& SEC_LOAD
))
1095 /* Count how many PT_IA_64_UNWIND segments we need. */
1096 for (s
= abfd
->sections
; s
; s
= s
->next
)
1097 if (is_unwind_section_name (abfd
, s
->name
) && (s
->flags
& SEC_LOAD
))
1104 elfNN_ia64_modify_segment_map (bfd
*abfd
,
1105 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1107 struct elf_segment_map
*m
, **pm
;
1108 Elf_Internal_Shdr
*hdr
;
1111 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1112 all PT_LOAD segments. */
1113 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1114 if (s
&& (s
->flags
& SEC_LOAD
))
1116 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1117 if (m
->p_type
== PT_IA_64_ARCHEXT
)
1121 m
= ((struct elf_segment_map
*)
1122 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1126 m
->p_type
= PT_IA_64_ARCHEXT
;
1130 /* We want to put it after the PHDR and INTERP segments. */
1131 pm
= &elf_seg_map (abfd
);
1133 && ((*pm
)->p_type
== PT_PHDR
1134 || (*pm
)->p_type
== PT_INTERP
))
1142 /* Install PT_IA_64_UNWIND segments, if needed. */
1143 for (s
= abfd
->sections
; s
; s
= s
->next
)
1145 hdr
= &elf_section_data (s
)->this_hdr
;
1146 if (hdr
->sh_type
!= SHT_IA_64_UNWIND
)
1149 if (s
&& (s
->flags
& SEC_LOAD
))
1151 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1152 if (m
->p_type
== PT_IA_64_UNWIND
)
1156 /* Look through all sections in the unwind segment
1157 for a match since there may be multiple sections
1159 for (i
= m
->count
- 1; i
>= 0; --i
)
1160 if (m
->sections
[i
] == s
)
1169 m
= ((struct elf_segment_map
*)
1170 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1174 m
->p_type
= PT_IA_64_UNWIND
;
1179 /* We want to put it last. */
1180 pm
= &elf_seg_map (abfd
);
1191 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1192 the input sections for each output section in the segment and testing
1193 for SHF_IA_64_NORECOV on each. */
1196 elfNN_ia64_modify_headers (bfd
*abfd
, struct bfd_link_info
*info
)
1198 struct elf_obj_tdata
*tdata
= elf_tdata (abfd
);
1199 struct elf_segment_map
*m
;
1200 Elf_Internal_Phdr
*p
;
1202 for (p
= tdata
->phdr
, m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
, p
++)
1203 if (m
->p_type
== PT_LOAD
)
1206 for (i
= m
->count
- 1; i
>= 0; --i
)
1208 struct bfd_link_order
*order
= m
->sections
[i
]->map_head
.link_order
;
1210 while (order
!= NULL
)
1212 if (order
->type
== bfd_indirect_link_order
)
1214 asection
*is
= order
->u
.indirect
.section
;
1215 bfd_vma flags
= elf_section_data(is
)->this_hdr
.sh_flags
;
1216 if (flags
& SHF_IA_64_NORECOV
)
1218 p
->p_flags
|= PF_IA_64_NORECOV
;
1222 order
= order
->next
;
1228 return _bfd_elf_modify_headers (abfd
, info
);
1231 /* According to the Tahoe assembler spec, all labels starting with a
1235 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1238 return name
[0] == '.';
1241 /* Should we do dynamic things to this symbol? */
1244 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry
*h
,
1245 struct bfd_link_info
*info
, int r_type
)
1247 bool ignore_protected
1248 = ((r_type
& 0xf8) == 0x40 /* FPTR relocs */
1249 || (r_type
& 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1251 return _bfd_elf_dynamic_symbol_p (h
, info
, ignore_protected
);
1254 static struct bfd_hash_entry
*
1255 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry
*entry
,
1256 struct bfd_hash_table
*table
,
1259 struct elfNN_ia64_link_hash_entry
*ret
;
1260 ret
= (struct elfNN_ia64_link_hash_entry
*) entry
;
1262 /* Allocate the structure if it has not already been allocated by a
1265 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
1270 /* Call the allocation method of the superclass. */
1271 ret
= ((struct elfNN_ia64_link_hash_entry
*)
1272 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1277 ret
->sorted_count
= 0;
1279 return (struct bfd_hash_entry
*) ret
;
1283 elfNN_ia64_hash_copy_indirect (struct bfd_link_info
*info
,
1284 struct elf_link_hash_entry
*xdir
,
1285 struct elf_link_hash_entry
*xind
)
1287 struct elfNN_ia64_link_hash_entry
*dir
, *ind
;
1289 dir
= (struct elfNN_ia64_link_hash_entry
*) xdir
;
1290 ind
= (struct elfNN_ia64_link_hash_entry
*) xind
;
1292 /* Copy down any references that we may have already seen to the
1293 symbol which just became indirect. */
1295 if (dir
->root
.versioned
!= versioned_hidden
)
1296 dir
->root
.ref_dynamic
|= ind
->root
.ref_dynamic
;
1297 dir
->root
.ref_regular
|= ind
->root
.ref_regular
;
1298 dir
->root
.ref_regular_nonweak
|= ind
->root
.ref_regular_nonweak
;
1299 dir
->root
.needs_plt
|= ind
->root
.needs_plt
;
1301 if (ind
->root
.root
.type
!= bfd_link_hash_indirect
)
1304 /* Copy over the got and plt data. This would have been done
1307 if (ind
->info
!= NULL
)
1309 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1314 dir
->info
= ind
->info
;
1315 dir
->count
= ind
->count
;
1316 dir
->sorted_count
= ind
->sorted_count
;
1317 dir
->size
= ind
->size
;
1321 ind
->sorted_count
= 0;
1324 /* Fix up the dyn_sym_info pointers to the global symbol. */
1325 for (count
= dir
->count
, dyn_i
= dir
->info
;
1328 dyn_i
->h
= &dir
->root
;
1331 /* Copy over the dynindx. */
1333 if (ind
->root
.dynindx
!= -1)
1335 if (dir
->root
.dynindx
!= -1)
1336 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1337 dir
->root
.dynstr_index
);
1338 dir
->root
.dynindx
= ind
->root
.dynindx
;
1339 dir
->root
.dynstr_index
= ind
->root
.dynstr_index
;
1340 ind
->root
.dynindx
= -1;
1341 ind
->root
.dynstr_index
= 0;
1346 elfNN_ia64_hash_hide_symbol (struct bfd_link_info
*info
,
1347 struct elf_link_hash_entry
*xh
,
1350 struct elfNN_ia64_link_hash_entry
*h
;
1351 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1354 h
= (struct elfNN_ia64_link_hash_entry
*)xh
;
1356 _bfd_elf_link_hash_hide_symbol (info
, &h
->root
, force_local
);
1358 for (count
= h
->count
, dyn_i
= h
->info
;
1362 dyn_i
->want_plt2
= 0;
1363 dyn_i
->want_plt
= 0;
1367 /* Compute a hash of a local hash entry. */
1370 elfNN_ia64_local_htab_hash (const void *ptr
)
1372 struct elfNN_ia64_local_hash_entry
*entry
1373 = (struct elfNN_ia64_local_hash_entry
*) ptr
;
1375 return ELF_LOCAL_SYMBOL_HASH (entry
->id
, entry
->r_sym
);
1378 /* Compare local hash entries. */
1381 elfNN_ia64_local_htab_eq (const void *ptr1
, const void *ptr2
)
1383 struct elfNN_ia64_local_hash_entry
*entry1
1384 = (struct elfNN_ia64_local_hash_entry
*) ptr1
;
1385 struct elfNN_ia64_local_hash_entry
*entry2
1386 = (struct elfNN_ia64_local_hash_entry
*) ptr2
;
1388 return entry1
->id
== entry2
->id
&& entry1
->r_sym
== entry2
->r_sym
;
1391 /* Free the global elfNN_ia64_dyn_sym_info array. */
1394 elfNN_ia64_global_dyn_info_free (struct elf_link_hash_entry
*xentry
,
1395 void *unused ATTRIBUTE_UNUSED
)
1397 struct elfNN_ia64_link_hash_entry
*entry
1398 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1403 entry
->sorted_count
= 0;
1409 /* Free the local elfNN_ia64_dyn_sym_info array. */
1412 elfNN_ia64_local_dyn_info_free (void **slot
,
1413 void * unused ATTRIBUTE_UNUSED
)
1415 struct elfNN_ia64_local_hash_entry
*entry
1416 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1421 entry
->sorted_count
= 0;
1427 /* Destroy IA-64 linker hash table. */
1430 elfNN_ia64_link_hash_table_free (bfd
*obfd
)
1432 struct elfNN_ia64_link_hash_table
*ia64_info
1433 = (struct elfNN_ia64_link_hash_table
*) obfd
->link
.hash
;
1434 if (ia64_info
->loc_hash_table
)
1436 htab_traverse (ia64_info
->loc_hash_table
,
1437 elfNN_ia64_local_dyn_info_free
, NULL
);
1438 htab_delete (ia64_info
->loc_hash_table
);
1440 if (ia64_info
->loc_hash_memory
)
1441 objalloc_free ((struct objalloc
*) ia64_info
->loc_hash_memory
);
1442 elf_link_hash_traverse (&ia64_info
->root
,
1443 elfNN_ia64_global_dyn_info_free
, NULL
);
1444 _bfd_elf_link_hash_table_free (obfd
);
1447 /* Create the derived linker hash table. The IA-64 ELF port uses this
1448 derived hash table to keep information specific to the IA-64 ElF
1449 linker (without using static variables). */
1451 static struct bfd_link_hash_table
*
1452 elfNN_ia64_hash_table_create (bfd
*abfd
)
1454 struct elfNN_ia64_link_hash_table
*ret
;
1456 ret
= bfd_zmalloc ((bfd_size_type
) sizeof (*ret
));
1460 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1461 elfNN_ia64_new_elf_hash_entry
,
1462 sizeof (struct elfNN_ia64_link_hash_entry
),
1469 ret
->loc_hash_table
= htab_try_create (1024, elfNN_ia64_local_htab_hash
,
1470 elfNN_ia64_local_htab_eq
, NULL
);
1471 ret
->loc_hash_memory
= objalloc_create ();
1472 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
1474 elfNN_ia64_link_hash_table_free (abfd
);
1477 ret
->root
.root
.hash_table_free
= elfNN_ia64_link_hash_table_free
;
1478 ret
->root
.dt_pltgot_required
= true;
1480 return &ret
->root
.root
;
1483 /* Traverse both local and global hash tables. */
1485 struct elfNN_ia64_dyn_sym_traverse_data
1487 bool (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *);
1492 elfNN_ia64_global_dyn_sym_thunk (struct elf_link_hash_entry
*xentry
,
1495 struct elfNN_ia64_link_hash_entry
*entry
1496 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1497 struct elfNN_ia64_dyn_sym_traverse_data
*data
1498 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1499 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1502 for (count
= entry
->count
, dyn_i
= entry
->info
;
1505 if (! (*data
->func
) (dyn_i
, data
->data
))
1511 elfNN_ia64_local_dyn_sym_thunk (void **slot
, void * xdata
)
1513 struct elfNN_ia64_local_hash_entry
*entry
1514 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1515 struct elfNN_ia64_dyn_sym_traverse_data
*data
1516 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1517 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1520 for (count
= entry
->count
, dyn_i
= entry
->info
;
1523 if (! (*data
->func
) (dyn_i
, data
->data
))
1529 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table
*ia64_info
,
1530 bool (*func
) (struct elfNN_ia64_dyn_sym_info
*,
1534 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
1539 elf_link_hash_traverse (&ia64_info
->root
,
1540 elfNN_ia64_global_dyn_sym_thunk
, &xdata
);
1541 htab_traverse (ia64_info
->loc_hash_table
,
1542 elfNN_ia64_local_dyn_sym_thunk
, &xdata
);
1546 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1547 struct bfd_link_info
*info
)
1549 struct elfNN_ia64_link_hash_table
*ia64_info
;
1552 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1555 ia64_info
= elfNN_ia64_hash_table (info
);
1556 if (ia64_info
== NULL
)
1560 flagword flags
= bfd_section_flags (ia64_info
->root
.sgot
);
1561 bfd_set_section_flags (ia64_info
->root
.sgot
, SEC_SMALL_DATA
| flags
);
1562 /* The .got section is always aligned at 8 bytes. */
1563 if (!bfd_set_section_alignment (ia64_info
->root
.sgot
, 3))
1567 if (!get_pltoff (abfd
, info
, ia64_info
))
1570 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1571 (SEC_ALLOC
| SEC_LOAD
1574 | SEC_LINKER_CREATED
1577 || !bfd_set_section_alignment (s
, LOG_SECTION_ALIGN
))
1579 ia64_info
->rel_pltoff_sec
= s
;
1584 /* Find and/or create a hash entry for local symbol. */
1585 static struct elfNN_ia64_local_hash_entry
*
1586 get_local_sym_hash (struct elfNN_ia64_link_hash_table
*ia64_info
,
1587 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
1590 struct elfNN_ia64_local_hash_entry e
, *ret
;
1591 asection
*sec
= abfd
->sections
;
1592 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
1593 ELFNN_R_SYM (rel
->r_info
));
1597 e
.r_sym
= ELFNN_R_SYM (rel
->r_info
);
1598 slot
= htab_find_slot_with_hash (ia64_info
->loc_hash_table
, &e
, h
,
1599 create
? INSERT
: NO_INSERT
);
1605 return (struct elfNN_ia64_local_hash_entry
*) *slot
;
1607 ret
= (struct elfNN_ia64_local_hash_entry
*)
1608 objalloc_alloc ((struct objalloc
*) ia64_info
->loc_hash_memory
,
1609 sizeof (struct elfNN_ia64_local_hash_entry
));
1612 memset (ret
, 0, sizeof (*ret
));
1614 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1620 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1623 addend_compare (const void *xp
, const void *yp
)
1625 const struct elfNN_ia64_dyn_sym_info
*x
1626 = (const struct elfNN_ia64_dyn_sym_info
*) xp
;
1627 const struct elfNN_ia64_dyn_sym_info
*y
1628 = (const struct elfNN_ia64_dyn_sym_info
*) yp
;
1630 return x
->addend
< y
->addend
? -1 : x
->addend
> y
->addend
? 1 : 0;
1633 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1636 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
1639 bfd_vma curr
, prev
, got_offset
;
1640 unsigned int i
, kept
, dupes
, diff
, dest
, src
, len
;
1642 qsort (info
, count
, sizeof (*info
), addend_compare
);
1644 /* Find the first duplicate. */
1645 prev
= info
[0].addend
;
1646 got_offset
= info
[0].got_offset
;
1647 for (i
= 1; i
< count
; i
++)
1649 curr
= info
[i
].addend
;
1652 /* For duplicates, make sure that GOT_OFFSET is valid. */
1653 if (got_offset
== (bfd_vma
) -1)
1654 got_offset
= info
[i
].got_offset
;
1657 got_offset
= info
[i
].got_offset
;
1661 /* We may move a block of elements to here. */
1664 /* Remove duplicates. */
1669 /* For duplicates, make sure that the kept one has a valid
1672 if (got_offset
!= (bfd_vma
) -1)
1673 info
[kept
].got_offset
= got_offset
;
1675 curr
= info
[i
].addend
;
1676 got_offset
= info
[i
].got_offset
;
1678 /* Move a block of elements whose first one is different from
1682 for (src
= i
+ 1; src
< count
; src
++)
1684 if (info
[src
].addend
!= curr
)
1686 /* For duplicates, make sure that GOT_OFFSET is
1688 if (got_offset
== (bfd_vma
) -1)
1689 got_offset
= info
[src
].got_offset
;
1692 /* Make sure that the kept one has a valid got_offset. */
1693 if (got_offset
!= (bfd_vma
) -1)
1694 info
[kept
].got_offset
= got_offset
;
1702 /* Find the next duplicate. SRC will be kept. */
1703 prev
= info
[src
].addend
;
1704 got_offset
= info
[src
].got_offset
;
1705 for (dupes
= src
+ 1; dupes
< count
; dupes
++)
1707 curr
= info
[dupes
].addend
;
1710 /* Make sure that got_offset is valid. */
1711 if (got_offset
== (bfd_vma
) -1)
1712 got_offset
= info
[dupes
].got_offset
;
1714 /* For duplicates, make sure that the kept one has
1715 a valid got_offset. */
1716 if (got_offset
!= (bfd_vma
) -1)
1717 info
[dupes
- 1].got_offset
= got_offset
;
1720 got_offset
= info
[dupes
].got_offset
;
1724 /* How much to move. */
1728 if (len
== 1 && dupes
< count
)
1730 /* If we only move 1 element, we combine it with the next
1731 one. There must be at least a duplicate. Find the
1732 next different one. */
1733 for (diff
= dupes
+ 1, src
++; diff
< count
; diff
++, src
++)
1735 if (info
[diff
].addend
!= curr
)
1737 /* Make sure that got_offset is valid. */
1738 if (got_offset
== (bfd_vma
) -1)
1739 got_offset
= info
[diff
].got_offset
;
1742 /* Makre sure that the last duplicated one has an valid
1744 BFD_ASSERT (curr
== prev
);
1745 if (got_offset
!= (bfd_vma
) -1)
1746 info
[diff
- 1].got_offset
= got_offset
;
1750 /* Find the next duplicate. Track the current valid
1752 prev
= info
[diff
].addend
;
1753 got_offset
= info
[diff
].got_offset
;
1754 for (dupes
= diff
+ 1; dupes
< count
; dupes
++)
1756 curr
= info
[dupes
].addend
;
1759 /* For duplicates, make sure that GOT_OFFSET
1761 if (got_offset
== (bfd_vma
) -1)
1762 got_offset
= info
[dupes
].got_offset
;
1765 got_offset
= info
[dupes
].got_offset
;
1770 len
= diff
- src
+ 1;
1775 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1784 /* When we get here, either there is no duplicate at all or
1785 the only duplicate is the last element. */
1788 /* If the last element is a duplicate, make sure that the
1789 kept one has a valid got_offset. We also update count. */
1790 if (got_offset
!= (bfd_vma
) -1)
1791 info
[dest
- 1].got_offset
= got_offset
;
1799 /* Find and/or create a descriptor for dynamic symbol info. This will
1800 vary based on global or local symbol, and the addend to the reloc.
1802 We don't sort when inserting. Also, we sort and eliminate
1803 duplicates if there is an unsorted section. Typically, this will
1804 only happen once, because we do all insertions before lookups. We
1805 then use bsearch to do a lookup. This also allows lookups to be
1806 fast. So we have fast insertion (O(log N) due to duplicate check),
1807 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1808 Previously, all lookups were O(N) because of the use of the linked
1809 list and also all insertions were O(N) because of the check for
1810 duplicates. There are some complications here because the array
1811 size grows occasionally, which may add an O(N) factor, but this
1812 should be rare. Also, we free the excess array allocation, which
1813 requires a copy which is O(N), but this only happens once. */
1815 static struct elfNN_ia64_dyn_sym_info
*
1816 get_dyn_sym_info (struct elfNN_ia64_link_hash_table
*ia64_info
,
1817 struct elf_link_hash_entry
*h
, bfd
*abfd
,
1818 const Elf_Internal_Rela
*rel
, bool create
)
1820 struct elfNN_ia64_dyn_sym_info
**info_p
, *info
, *dyn_i
, key
;
1821 unsigned int *count_p
, *sorted_count_p
, *size_p
;
1822 unsigned int count
, sorted_count
, size
;
1823 bfd_vma addend
= rel
? rel
->r_addend
: 0;
1828 struct elfNN_ia64_link_hash_entry
*global_h
;
1830 global_h
= (struct elfNN_ia64_link_hash_entry
*) h
;
1831 info_p
= &global_h
->info
;
1832 count_p
= &global_h
->count
;
1833 sorted_count_p
= &global_h
->sorted_count
;
1834 size_p
= &global_h
->size
;
1838 struct elfNN_ia64_local_hash_entry
*loc_h
;
1840 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1843 BFD_ASSERT (!create
);
1847 info_p
= &loc_h
->info
;
1848 count_p
= &loc_h
->count
;
1849 sorted_count_p
= &loc_h
->sorted_count
;
1850 size_p
= &loc_h
->size
;
1854 sorted_count
= *sorted_count_p
;
1859 /* When we create the array, we don't check for duplicates,
1860 except in the previously sorted section if one exists, and
1861 against the last inserted entry. This allows insertions to
1867 /* Try bsearch first on the sorted section. */
1868 key
.addend
= addend
;
1869 dyn_i
= bsearch (&key
, info
, sorted_count
,
1870 sizeof (*info
), addend_compare
);
1877 /* Do a quick check for the last inserted entry. */
1878 dyn_i
= info
+ count
- 1;
1879 if (dyn_i
->addend
== addend
)
1886 /* It is the very first element. We create the array of size
1889 amt
= size
* sizeof (*info
);
1890 info
= bfd_malloc (amt
);
1892 else if (size
<= count
)
1894 /* We double the array size every time when we reach the
1897 amt
= size
* sizeof (*info
);
1898 info
= bfd_realloc (info
, amt
);
1909 /* Append the new one to the array. */
1910 dyn_i
= info
+ count
;
1911 memset (dyn_i
, 0, sizeof (*dyn_i
));
1912 dyn_i
->got_offset
= (bfd_vma
) -1;
1913 dyn_i
->addend
= addend
;
1915 /* We increment count only since the new ones are unsorted and
1916 may have duplicate. */
1921 /* It is a lookup without insertion. Sort array if part of the
1922 array isn't sorted. */
1923 if (count
!= sorted_count
)
1925 count
= sort_dyn_sym_info (info
, count
);
1927 *sorted_count_p
= count
;
1930 /* Free unused memory. */
1933 amt
= count
* sizeof (*info
);
1934 info
= bfd_realloc (info
, amt
);
1936 if (info
== NULL
&& count
!= 0)
1937 /* realloc should never fail since we are reducing size here,
1938 but if it does use the old array. */
1948 key
.addend
= addend
;
1949 dyn_i
= bsearch (&key
, info
, count
, sizeof (*info
), addend_compare
);
1957 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1958 struct elfNN_ia64_link_hash_table
*ia64_info
)
1963 got
= ia64_info
->root
.sgot
;
1968 dynobj
= ia64_info
->root
.dynobj
;
1970 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1971 if (!_bfd_elf_create_got_section (dynobj
, info
))
1974 got
= ia64_info
->root
.sgot
;
1976 /* The .got section is always aligned at 8 bytes. */
1977 if (!bfd_set_section_alignment (got
, 3))
1980 flags
= bfd_section_flags (got
);
1981 if (!bfd_set_section_flags (got
, SEC_SMALL_DATA
| flags
))
1988 /* Create function descriptor section (.opd). This section is called .opd
1989 because it contains "official procedure descriptors". The "official"
1990 refers to the fact that these descriptors are used when taking the address
1991 of a procedure, thus ensuring a unique address for each procedure. */
1994 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1995 struct elfNN_ia64_link_hash_table
*ia64_info
)
2000 fptr
= ia64_info
->fptr_sec
;
2003 dynobj
= ia64_info
->root
.dynobj
;
2005 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2007 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
2012 | (bfd_link_pie (info
)
2014 | SEC_LINKER_CREATED
));
2016 || !bfd_set_section_alignment (fptr
, 4))
2022 ia64_info
->fptr_sec
= fptr
;
2024 if (bfd_link_pie (info
))
2027 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2028 (SEC_ALLOC
| SEC_LOAD
2031 | SEC_LINKER_CREATED
2033 if (fptr_rel
== NULL
2034 || !bfd_set_section_alignment (fptr_rel
, LOG_SECTION_ALIGN
))
2040 ia64_info
->rel_fptr_sec
= fptr_rel
;
2048 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2049 struct elfNN_ia64_link_hash_table
*ia64_info
)
2054 pltoff
= ia64_info
->pltoff_sec
;
2057 dynobj
= ia64_info
->root
.dynobj
;
2059 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2061 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2062 ELF_STRING_ia64_pltoff
,
2068 | SEC_LINKER_CREATED
));
2070 || !bfd_set_section_alignment (pltoff
, 4))
2076 ia64_info
->pltoff_sec
= pltoff
;
2083 get_reloc_section (bfd
*abfd
,
2084 struct elfNN_ia64_link_hash_table
*ia64_info
,
2085 asection
*sec
, bool create
)
2087 const char *srel_name
;
2091 srel_name
= (bfd_elf_string_from_elf_section
2092 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
2093 _bfd_elf_single_rel_hdr (sec
)->sh_name
));
2094 if (srel_name
== NULL
)
2097 dynobj
= ia64_info
->root
.dynobj
;
2099 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2101 srel
= bfd_get_linker_section (dynobj
, srel_name
);
2102 if (srel
== NULL
&& create
)
2104 srel
= bfd_make_section_anyway_with_flags (dynobj
, srel_name
,
2105 (SEC_ALLOC
| SEC_LOAD
2108 | SEC_LINKER_CREATED
2111 || !bfd_set_section_alignment (srel
, LOG_SECTION_ALIGN
))
2119 count_dyn_reloc (bfd
*abfd
, struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2120 asection
*srel
, int type
, bool reltext
)
2122 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2124 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2125 if (rent
->srel
== srel
&& rent
->type
== type
)
2130 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2131 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2135 rent
->next
= dyn_i
->reloc_entries
;
2139 dyn_i
->reloc_entries
= rent
;
2141 rent
->reltext
= reltext
;
2148 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2150 const Elf_Internal_Rela
*relocs
)
2152 struct elfNN_ia64_link_hash_table
*ia64_info
;
2153 const Elf_Internal_Rela
*relend
;
2154 Elf_Internal_Shdr
*symtab_hdr
;
2155 const Elf_Internal_Rela
*rel
;
2156 asection
*got
, *fptr
, *srel
, *pltoff
;
2165 NEED_LTOFF_FPTR
= 128,
2171 struct elf_link_hash_entry
*h
;
2172 unsigned long r_symndx
;
2175 if (bfd_link_relocatable (info
))
2178 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2179 ia64_info
= elfNN_ia64_hash_table (info
);
2180 if (ia64_info
== NULL
)
2183 got
= fptr
= srel
= pltoff
= NULL
;
2185 relend
= relocs
+ sec
->reloc_count
;
2187 /* We scan relocations first to create dynamic relocation arrays. We
2188 modified get_dyn_sym_info to allow fast insertion and support fast
2189 lookup in the next loop. */
2190 for (rel
= relocs
; rel
< relend
; ++rel
)
2192 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2193 if (r_symndx
>= symtab_hdr
->sh_info
)
2195 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2196 h
= elf_sym_hashes (abfd
)[indx
];
2197 while (h
->root
.type
== bfd_link_hash_indirect
2198 || h
->root
.type
== bfd_link_hash_warning
)
2199 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2204 /* We can only get preliminary data on whether a symbol is
2205 locally or externally defined, as not all of the input files
2206 have yet been processed. Do something with what we know, as
2207 this may help reduce memory usage and processing time later. */
2208 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2209 && (!SYMBOLIC_BIND (info
, h
)
2210 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2212 || h
->root
.type
== bfd_link_hash_defweak
));
2215 switch (ELFNN_R_TYPE (rel
->r_info
))
2217 case R_IA64_TPREL64MSB
:
2218 case R_IA64_TPREL64LSB
:
2219 if (bfd_link_pic (info
) || maybe_dynamic
)
2220 need_entry
= NEED_DYNREL
;
2223 case R_IA64_LTOFF_TPREL22
:
2224 need_entry
= NEED_TPREL
;
2225 if (bfd_link_pic (info
))
2226 info
->flags
|= DF_STATIC_TLS
;
2229 case R_IA64_DTPREL32MSB
:
2230 case R_IA64_DTPREL32LSB
:
2231 case R_IA64_DTPREL64MSB
:
2232 case R_IA64_DTPREL64LSB
:
2233 if (bfd_link_pic (info
) || maybe_dynamic
)
2234 need_entry
= NEED_DYNREL
;
2237 case R_IA64_LTOFF_DTPREL22
:
2238 need_entry
= NEED_DTPREL
;
2241 case R_IA64_DTPMOD64MSB
:
2242 case R_IA64_DTPMOD64LSB
:
2243 if (bfd_link_pic (info
) || maybe_dynamic
)
2244 need_entry
= NEED_DYNREL
;
2247 case R_IA64_LTOFF_DTPMOD22
:
2248 need_entry
= NEED_DTPMOD
;
2251 case R_IA64_LTOFF_FPTR22
:
2252 case R_IA64_LTOFF_FPTR64I
:
2253 case R_IA64_LTOFF_FPTR32MSB
:
2254 case R_IA64_LTOFF_FPTR32LSB
:
2255 case R_IA64_LTOFF_FPTR64MSB
:
2256 case R_IA64_LTOFF_FPTR64LSB
:
2257 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2260 case R_IA64_FPTR64I
:
2261 case R_IA64_FPTR32MSB
:
2262 case R_IA64_FPTR32LSB
:
2263 case R_IA64_FPTR64MSB
:
2264 case R_IA64_FPTR64LSB
:
2265 if (bfd_link_pic (info
) || h
)
2266 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2268 need_entry
= NEED_FPTR
;
2271 case R_IA64_LTOFF22
:
2272 case R_IA64_LTOFF64I
:
2273 need_entry
= NEED_GOT
;
2276 case R_IA64_LTOFF22X
:
2277 need_entry
= NEED_GOTX
;
2280 case R_IA64_PLTOFF22
:
2281 case R_IA64_PLTOFF64I
:
2282 case R_IA64_PLTOFF64MSB
:
2283 case R_IA64_PLTOFF64LSB
:
2284 need_entry
= NEED_PLTOFF
;
2288 need_entry
|= NEED_MIN_PLT
;
2292 (*info
->callbacks
->warning
)
2293 (info
, _("@pltoff reloc against local symbol"), 0,
2294 abfd
, 0, (bfd_vma
) 0);
2298 case R_IA64_PCREL21B
:
2299 case R_IA64_PCREL60B
:
2300 /* Depending on where this symbol is defined, we may or may not
2301 need a full plt entry. Only skip if we know we'll not need
2302 the entry -- static or symbolic, and the symbol definition
2303 has already been seen. */
2304 if (maybe_dynamic
&& rel
->r_addend
== 0)
2305 need_entry
= NEED_FULL_PLT
;
2311 case R_IA64_DIR32MSB
:
2312 case R_IA64_DIR32LSB
:
2313 case R_IA64_DIR64MSB
:
2314 case R_IA64_DIR64LSB
:
2315 /* Shared objects will always need at least a REL relocation. */
2316 if (bfd_link_pic (info
) || maybe_dynamic
)
2317 need_entry
= NEED_DYNREL
;
2320 case R_IA64_IPLTMSB
:
2321 case R_IA64_IPLTLSB
:
2322 /* Shared objects will always need at least a REL relocation. */
2323 if (bfd_link_pic (info
) || maybe_dynamic
)
2324 need_entry
= NEED_DYNREL
;
2327 case R_IA64_PCREL22
:
2328 case R_IA64_PCREL64I
:
2329 case R_IA64_PCREL32MSB
:
2330 case R_IA64_PCREL32LSB
:
2331 case R_IA64_PCREL64MSB
:
2332 case R_IA64_PCREL64LSB
:
2334 need_entry
= NEED_DYNREL
;
2341 if ((need_entry
& NEED_FPTR
) != 0
2344 (*info
->callbacks
->warning
)
2345 (info
, _("non-zero addend in @fptr reloc"), 0,
2346 abfd
, 0, (bfd_vma
) 0);
2349 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, true) == NULL
)
2353 /* Now, we only do lookup without insertion, which is very fast
2354 with the modified get_dyn_sym_info. */
2355 for (rel
= relocs
; rel
< relend
; ++rel
)
2357 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2358 int dynrel_type
= R_IA64_NONE
;
2360 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2361 if (r_symndx
>= symtab_hdr
->sh_info
)
2363 /* We're dealing with a global symbol -- find its hash entry
2364 and mark it as being referenced. */
2365 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2366 h
= elf_sym_hashes (abfd
)[indx
];
2367 while (h
->root
.type
== bfd_link_hash_indirect
2368 || h
->root
.type
== bfd_link_hash_warning
)
2369 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2371 /* PR15323, ref flags aren't set for references in the same
2378 /* We can only get preliminary data on whether a symbol is
2379 locally or externally defined, as not all of the input files
2380 have yet been processed. Do something with what we know, as
2381 this may help reduce memory usage and processing time later. */
2382 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2383 && (!SYMBOLIC_BIND (info
, h
)
2384 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2386 || h
->root
.type
== bfd_link_hash_defweak
));
2389 switch (ELFNN_R_TYPE (rel
->r_info
))
2391 case R_IA64_TPREL64MSB
:
2392 case R_IA64_TPREL64LSB
:
2393 if (bfd_link_pic (info
) || maybe_dynamic
)
2394 need_entry
= NEED_DYNREL
;
2395 dynrel_type
= R_IA64_TPREL64LSB
;
2396 if (bfd_link_pic (info
))
2397 info
->flags
|= DF_STATIC_TLS
;
2400 case R_IA64_LTOFF_TPREL22
:
2401 need_entry
= NEED_TPREL
;
2402 if (bfd_link_pic (info
))
2403 info
->flags
|= DF_STATIC_TLS
;
2406 case R_IA64_DTPREL32MSB
:
2407 case R_IA64_DTPREL32LSB
:
2408 case R_IA64_DTPREL64MSB
:
2409 case R_IA64_DTPREL64LSB
:
2410 if (bfd_link_pic (info
) || maybe_dynamic
)
2411 need_entry
= NEED_DYNREL
;
2412 dynrel_type
= R_IA64_DTPRELNNLSB
;
2415 case R_IA64_LTOFF_DTPREL22
:
2416 need_entry
= NEED_DTPREL
;
2419 case R_IA64_DTPMOD64MSB
:
2420 case R_IA64_DTPMOD64LSB
:
2421 if (bfd_link_pic (info
) || maybe_dynamic
)
2422 need_entry
= NEED_DYNREL
;
2423 dynrel_type
= R_IA64_DTPMOD64LSB
;
2426 case R_IA64_LTOFF_DTPMOD22
:
2427 need_entry
= NEED_DTPMOD
;
2430 case R_IA64_LTOFF_FPTR22
:
2431 case R_IA64_LTOFF_FPTR64I
:
2432 case R_IA64_LTOFF_FPTR32MSB
:
2433 case R_IA64_LTOFF_FPTR32LSB
:
2434 case R_IA64_LTOFF_FPTR64MSB
:
2435 case R_IA64_LTOFF_FPTR64LSB
:
2436 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2439 case R_IA64_FPTR64I
:
2440 case R_IA64_FPTR32MSB
:
2441 case R_IA64_FPTR32LSB
:
2442 case R_IA64_FPTR64MSB
:
2443 case R_IA64_FPTR64LSB
:
2444 if (bfd_link_pic (info
) || h
)
2445 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2447 need_entry
= NEED_FPTR
;
2448 dynrel_type
= R_IA64_FPTRNNLSB
;
2451 case R_IA64_LTOFF22
:
2452 case R_IA64_LTOFF64I
:
2453 need_entry
= NEED_GOT
;
2456 case R_IA64_LTOFF22X
:
2457 need_entry
= NEED_GOTX
;
2460 case R_IA64_PLTOFF22
:
2461 case R_IA64_PLTOFF64I
:
2462 case R_IA64_PLTOFF64MSB
:
2463 case R_IA64_PLTOFF64LSB
:
2464 need_entry
= NEED_PLTOFF
;
2468 need_entry
|= NEED_MIN_PLT
;
2472 case R_IA64_PCREL21B
:
2473 case R_IA64_PCREL60B
:
2474 /* Depending on where this symbol is defined, we may or may not
2475 need a full plt entry. Only skip if we know we'll not need
2476 the entry -- static or symbolic, and the symbol definition
2477 has already been seen. */
2478 if (maybe_dynamic
&& rel
->r_addend
== 0)
2479 need_entry
= NEED_FULL_PLT
;
2485 case R_IA64_DIR32MSB
:
2486 case R_IA64_DIR32LSB
:
2487 case R_IA64_DIR64MSB
:
2488 case R_IA64_DIR64LSB
:
2489 /* Shared objects will always need at least a REL relocation. */
2490 if (bfd_link_pic (info
) || maybe_dynamic
)
2491 need_entry
= NEED_DYNREL
;
2492 dynrel_type
= R_IA64_DIRNNLSB
;
2495 case R_IA64_IPLTMSB
:
2496 case R_IA64_IPLTLSB
:
2497 /* Shared objects will always need at least a REL relocation. */
2498 if (bfd_link_pic (info
) || maybe_dynamic
)
2499 need_entry
= NEED_DYNREL
;
2500 dynrel_type
= R_IA64_IPLTLSB
;
2503 case R_IA64_PCREL22
:
2504 case R_IA64_PCREL64I
:
2505 case R_IA64_PCREL32MSB
:
2506 case R_IA64_PCREL32LSB
:
2507 case R_IA64_PCREL64MSB
:
2508 case R_IA64_PCREL64LSB
:
2510 need_entry
= NEED_DYNREL
;
2511 dynrel_type
= R_IA64_PCRELNNLSB
;
2518 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, false);
2520 /* Record whether or not this is a local symbol. */
2523 /* Create what's needed. */
2524 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2525 | NEED_DTPMOD
| NEED_DTPREL
))
2529 got
= get_got (abfd
, info
, ia64_info
);
2533 if (need_entry
& NEED_GOT
)
2534 dyn_i
->want_got
= 1;
2535 if (need_entry
& NEED_GOTX
)
2536 dyn_i
->want_gotx
= 1;
2537 if (need_entry
& NEED_TPREL
)
2538 dyn_i
->want_tprel
= 1;
2539 if (need_entry
& NEED_DTPMOD
)
2540 dyn_i
->want_dtpmod
= 1;
2541 if (need_entry
& NEED_DTPREL
)
2542 dyn_i
->want_dtprel
= 1;
2544 if (need_entry
& NEED_FPTR
)
2548 fptr
= get_fptr (abfd
, info
, ia64_info
);
2553 /* FPTRs for shared libraries are allocated by the dynamic
2554 linker. Make sure this local symbol will appear in the
2555 dynamic symbol table. */
2556 if (!h
&& bfd_link_pic (info
))
2558 if (! (bfd_elf_link_record_local_dynamic_symbol
2559 (info
, abfd
, (long) r_symndx
)))
2563 dyn_i
->want_fptr
= 1;
2565 if (need_entry
& NEED_LTOFF_FPTR
)
2566 dyn_i
->want_ltoff_fptr
= 1;
2567 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2569 if (!ia64_info
->root
.dynobj
)
2570 ia64_info
->root
.dynobj
= abfd
;
2572 dyn_i
->want_plt
= 1;
2574 if (need_entry
& NEED_FULL_PLT
)
2575 dyn_i
->want_plt2
= 1;
2576 if (need_entry
& NEED_PLTOFF
)
2578 /* This is needed here, in case @pltoff is used in a non-shared
2582 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2587 dyn_i
->want_pltoff
= 1;
2589 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2593 srel
= get_reloc_section (abfd
, ia64_info
, sec
, true);
2597 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2598 (sec
->flags
& SEC_READONLY
) != 0))
2606 /* For cleanliness, and potentially faster dynamic loading, allocate
2607 external GOT entries first. */
2610 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2613 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2615 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2616 && ! dyn_i
->want_fptr
2617 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2619 dyn_i
->got_offset
= x
->ofs
;
2622 if (dyn_i
->want_tprel
)
2624 dyn_i
->tprel_offset
= x
->ofs
;
2627 if (dyn_i
->want_dtpmod
)
2629 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2631 dyn_i
->dtpmod_offset
= x
->ofs
;
2636 struct elfNN_ia64_link_hash_table
*ia64_info
;
2638 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2639 if (ia64_info
== NULL
)
2642 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2644 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2647 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2650 if (dyn_i
->want_dtprel
)
2652 dyn_i
->dtprel_offset
= x
->ofs
;
2658 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2661 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2664 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2668 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2670 dyn_i
->got_offset
= x
->ofs
;
2676 /* Lastly, allocate all the GOT entries for local data. */
2679 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2682 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2684 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2685 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2687 dyn_i
->got_offset
= x
->ofs
;
2693 /* Search for the index of a global symbol in it's defining object file. */
2696 global_sym_index (struct elf_link_hash_entry
*h
)
2698 struct elf_link_hash_entry
**p
;
2701 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2702 || h
->root
.type
== bfd_link_hash_defweak
);
2704 obj
= h
->root
.u
.def
.section
->owner
;
2705 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2708 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2711 /* Allocate function descriptors. We can do these for every function
2712 in a main executable that is not exported. */
2715 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2717 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2719 if (dyn_i
->want_fptr
)
2721 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2724 while (h
->root
.type
== bfd_link_hash_indirect
2725 || h
->root
.type
== bfd_link_hash_warning
)
2726 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2728 if (!bfd_link_executable (x
->info
)
2730 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2731 || (h
->root
.type
!= bfd_link_hash_undefweak
2732 && h
->root
.type
!= bfd_link_hash_undefined
)))
2734 if (h
&& h
->dynindx
== -1)
2736 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2737 || (h
->root
.type
== bfd_link_hash_defweak
));
2739 if (!bfd_elf_link_record_local_dynamic_symbol
2740 (x
->info
, h
->root
.u
.def
.section
->owner
,
2741 global_sym_index (h
)))
2745 dyn_i
->want_fptr
= 0;
2747 else if (h
== NULL
|| h
->dynindx
== -1)
2749 dyn_i
->fptr_offset
= x
->ofs
;
2753 dyn_i
->want_fptr
= 0;
2758 /* Allocate all the minimal PLT entries. */
2761 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2764 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2766 if (dyn_i
->want_plt
)
2768 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2771 while (h
->root
.type
== bfd_link_hash_indirect
2772 || h
->root
.type
== bfd_link_hash_warning
)
2773 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2775 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2776 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2778 bfd_size_type offset
= x
->ofs
;
2780 offset
= PLT_HEADER_SIZE
;
2781 dyn_i
->plt_offset
= offset
;
2782 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2784 dyn_i
->want_pltoff
= 1;
2788 dyn_i
->want_plt
= 0;
2789 dyn_i
->want_plt2
= 0;
2795 /* Allocate all the full PLT entries. */
2798 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2801 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2803 if (dyn_i
->want_plt2
)
2805 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2806 bfd_size_type ofs
= x
->ofs
;
2808 dyn_i
->plt2_offset
= ofs
;
2809 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2811 while (h
->root
.type
== bfd_link_hash_indirect
2812 || h
->root
.type
== bfd_link_hash_warning
)
2813 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2814 dyn_i
->h
->plt
.offset
= ofs
;
2819 /* Allocate all the PLTOFF entries requested by relocations and
2820 plt entries. We can't share space with allocated FPTR entries,
2821 because the latter are not necessarily addressable by the GP.
2822 ??? Relaxation might be able to determine that they are. */
2825 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2828 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2830 if (dyn_i
->want_pltoff
)
2832 dyn_i
->pltoff_offset
= x
->ofs
;
2838 /* Allocate dynamic relocations for those symbols that turned out
2842 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2845 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2846 struct elfNN_ia64_link_hash_table
*ia64_info
;
2847 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2848 bool dynamic_symbol
, shared
, resolved_zero
;
2850 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2851 if (ia64_info
== NULL
)
2854 /* Note that this can't be used in relation to FPTR relocs below. */
2855 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2857 shared
= bfd_link_pic (x
->info
);
2858 resolved_zero
= (dyn_i
->h
2859 && ELF_ST_VISIBILITY (dyn_i
->h
->other
)
2860 && dyn_i
->h
->root
.type
== bfd_link_hash_undefweak
);
2862 /* Take care of the GOT and PLT relocations. */
2865 && (dynamic_symbol
|| shared
)
2866 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2867 || (dyn_i
->want_ltoff_fptr
2869 && dyn_i
->h
->dynindx
!= -1))
2871 if (!dyn_i
->want_ltoff_fptr
2872 || !bfd_link_pie (x
->info
)
2874 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2875 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2877 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2878 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2879 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2880 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2881 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2882 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2887 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2889 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2890 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2893 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2895 bfd_size_type t
= 0;
2897 /* Dynamic symbols get one IPLT relocation. Local symbols in
2898 shared libraries get two REL relocations. Local symbols in
2899 main applications get nothing. */
2901 t
= sizeof (ElfNN_External_Rela
);
2903 t
= 2 * sizeof (ElfNN_External_Rela
);
2905 ia64_info
->rel_pltoff_sec
->size
+= t
;
2908 /* Take care of the normal data relocations. */
2910 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2912 int count
= rent
->count
;
2916 case R_IA64_FPTR32LSB
:
2917 case R_IA64_FPTR64LSB
:
2918 /* Allocate one iff !want_fptr and not PIE, which by this point
2919 will be true only if we're actually allocating one statically
2920 in the main executable. Position independent executables
2921 need a relative reloc. */
2922 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2925 case R_IA64_PCREL32LSB
:
2926 case R_IA64_PCREL64LSB
:
2927 if (!dynamic_symbol
)
2930 case R_IA64_DIR32LSB
:
2931 case R_IA64_DIR64LSB
:
2932 if (!dynamic_symbol
&& !shared
)
2935 case R_IA64_IPLTLSB
:
2936 if (!dynamic_symbol
&& !shared
)
2938 /* Use two REL relocations for IPLT relocations
2939 against local symbols. */
2940 if (!dynamic_symbol
)
2943 case R_IA64_DTPREL32LSB
:
2944 case R_IA64_TPREL64LSB
:
2945 case R_IA64_DTPREL64LSB
:
2946 case R_IA64_DTPMOD64LSB
:
2952 x
->info
->flags
|= DF_TEXTREL
;
2953 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2960 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2961 struct elf_link_hash_entry
*h
)
2963 /* ??? Undefined symbols with PLT entries should be re-defined
2964 to be the PLT entry. */
2966 /* If this is a weak symbol, and there is a real definition, the
2967 processor independent code will have arranged for us to see the
2968 real definition first, and we can just use the same value. */
2969 if (h
->is_weakalias
)
2971 struct elf_link_hash_entry
*def
= weakdef (h
);
2972 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2973 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2974 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2978 /* If this is a reference to a symbol defined by a dynamic object which
2979 is not a function, we might allocate the symbol in our .dynbss section
2980 and allocate a COPY dynamic relocation.
2982 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2989 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2990 struct bfd_link_info
*info
)
2992 struct elfNN_ia64_allocate_data data
;
2993 struct elfNN_ia64_link_hash_table
*ia64_info
;
2997 ia64_info
= elfNN_ia64_hash_table (info
);
2998 if (ia64_info
== NULL
)
3000 dynobj
= ia64_info
->root
.dynobj
;
3001 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
3002 BFD_ASSERT(dynobj
!= NULL
);
3005 /* Set the contents of the .interp section to the interpreter. */
3006 if (ia64_info
->root
.dynamic_sections_created
3007 && bfd_link_executable (info
) && !info
->nointerp
)
3009 sec
= bfd_get_linker_section (dynobj
, ".interp");
3010 BFD_ASSERT (sec
!= NULL
);
3011 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3012 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3015 /* Allocate the GOT entries. */
3017 if (ia64_info
->root
.sgot
)
3020 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3021 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3022 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3023 ia64_info
->root
.sgot
->size
= data
.ofs
;
3026 /* Allocate the FPTR entries. */
3028 if (ia64_info
->fptr_sec
)
3031 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3032 ia64_info
->fptr_sec
->size
= data
.ofs
;
3035 /* Now that we've seen all of the input files, we can decide which
3036 symbols need plt entries. Allocate the minimal PLT entries first.
3037 We do this even though dynamic_sections_created may be FALSE, because
3038 this has the side-effect of clearing want_plt and want_plt2. */
3041 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3043 ia64_info
->minplt_entries
= 0;
3046 ia64_info
->minplt_entries
3047 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3050 /* Align the pointer for the plt2 entries. */
3051 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3053 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3054 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3056 /* FIXME: we always reserve the memory for dynamic linker even if
3057 there are no PLT entries since dynamic linker may assume the
3058 reserved memory always exists. */
3060 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3062 ia64_info
->root
.splt
->size
= data
.ofs
;
3064 /* If we've got a .plt, we need some extra memory for the dynamic
3065 linker. We stuff these in .got.plt. */
3066 ia64_info
->root
.sgotplt
->size
= 8 * PLT_RESERVED_WORDS
;
3069 /* Allocate the PLTOFF entries. */
3071 if (ia64_info
->pltoff_sec
)
3074 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_pltoff_entries
, &data
);
3075 ia64_info
->pltoff_sec
->size
= data
.ofs
;
3078 if (ia64_info
->root
.dynamic_sections_created
)
3080 /* Allocate space for the dynamic relocations that turned out to be
3083 if (bfd_link_pic (info
) && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
3084 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
3085 data
.only_got
= false;
3086 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
, &data
);
3089 /* We have now determined the sizes of the various dynamic sections.
3090 Allocate memory for them. */
3091 for (sec
= dynobj
->sections
; sec
!= NULL
; sec
= sec
->next
)
3095 if (!(sec
->flags
& SEC_LINKER_CREATED
))
3098 /* If we don't need this section, strip it from the output file.
3099 There were several sections primarily related to dynamic
3100 linking that must be create before the linker maps input
3101 sections to output sections. The linker does that before
3102 bfd_elf_size_dynamic_sections is called, and it is that
3103 function which decides whether anything needs to go into
3106 strip
= (sec
->size
== 0);
3108 if (sec
== ia64_info
->root
.sgot
)
3110 else if (sec
== ia64_info
->root
.srelgot
)
3113 ia64_info
->root
.srelgot
= NULL
;
3115 /* We use the reloc_count field as a counter if we need to
3116 copy relocs into the output file. */
3117 sec
->reloc_count
= 0;
3119 else if (sec
== ia64_info
->fptr_sec
)
3122 ia64_info
->fptr_sec
= NULL
;
3124 else if (sec
== ia64_info
->rel_fptr_sec
)
3127 ia64_info
->rel_fptr_sec
= NULL
;
3129 /* We use the reloc_count field as a counter if we need to
3130 copy relocs into the output file. */
3131 sec
->reloc_count
= 0;
3133 else if (sec
== ia64_info
->root
.splt
)
3136 ia64_info
->root
.splt
= NULL
;
3138 else if (sec
== ia64_info
->pltoff_sec
)
3141 ia64_info
->pltoff_sec
= NULL
;
3143 else if (sec
== ia64_info
->rel_pltoff_sec
)
3146 ia64_info
->rel_pltoff_sec
= NULL
;
3149 ia64_info
->root
.dt_jmprel_required
= true;
3150 /* We use the reloc_count field as a counter if we need to
3151 copy relocs into the output file. */
3152 sec
->reloc_count
= 0;
3159 /* It's OK to base decisions on the section name, because none
3160 of the dynobj section names depend upon the input files. */
3161 name
= bfd_section_name (sec
);
3163 if (strcmp (name
, ".got.plt") == 0)
3165 else if (startswith (name
, ".rel"))
3169 /* We use the reloc_count field as a counter if we need to
3170 copy relocs into the output file. */
3171 sec
->reloc_count
= 0;
3179 sec
->flags
|= SEC_EXCLUDE
;
3182 /* Allocate memory for the section contents. */
3183 sec
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, sec
->size
);
3184 if (sec
->contents
== NULL
&& sec
->size
!= 0)
3189 if (ia64_info
->root
.dynamic_sections_created
)
3191 /* Add some entries to the .dynamic section. We fill in the values
3192 later (in finish_dynamic_sections) but we must add the entries now
3193 so that we get the correct size for the .dynamic section. */
3195 #define add_dynamic_entry(TAG, VAL) \
3196 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3198 if (!_bfd_elf_add_dynamic_tags (output_bfd
, info
, true))
3201 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE
, 0))
3205 /* ??? Perhaps force __gp local. */
3211 elfNN_ia64_install_dyn_reloc (bfd
*abfd
, struct bfd_link_info
*info
,
3212 asection
*sec
, asection
*srel
,
3213 bfd_vma offset
, unsigned int type
,
3214 long dynindx
, bfd_vma addend
)
3216 Elf_Internal_Rela outrel
;
3219 BFD_ASSERT (dynindx
!= -1);
3220 outrel
.r_info
= ELFNN_R_INFO (dynindx
, type
);
3221 outrel
.r_addend
= addend
;
3222 outrel
.r_offset
= _bfd_elf_section_offset (abfd
, info
, sec
, offset
);
3223 if (outrel
.r_offset
>= (bfd_vma
) -2)
3225 /* Run for the hills. We shouldn't be outputting a relocation
3226 for this. So do what everyone else does and output a no-op. */
3227 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
3228 outrel
.r_addend
= 0;
3229 outrel
.r_offset
= 0;
3232 outrel
.r_offset
+= sec
->output_section
->vma
+ sec
->output_offset
;
3234 loc
= srel
->contents
;
3235 loc
+= srel
->reloc_count
++ * sizeof (ElfNN_External_Rela
);
3236 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3237 BFD_ASSERT (sizeof (ElfNN_External_Rela
) * srel
->reloc_count
<= srel
->size
);
3240 /* Store an entry for target address TARGET_ADDR in the linkage table
3241 and return the gp-relative address of the linkage table entry. */
3244 set_got_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3245 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3246 long dynindx
, bfd_vma addend
, bfd_vma value
,
3247 unsigned int dyn_r_type
)
3249 struct elfNN_ia64_link_hash_table
*ia64_info
;
3254 ia64_info
= elfNN_ia64_hash_table (info
);
3255 if (ia64_info
== NULL
)
3258 got_sec
= ia64_info
->root
.sgot
;
3262 case R_IA64_TPREL64LSB
:
3263 done
= dyn_i
->tprel_done
;
3264 dyn_i
->tprel_done
= true;
3265 got_offset
= dyn_i
->tprel_offset
;
3267 case R_IA64_DTPMOD64LSB
:
3268 if (dyn_i
->dtpmod_offset
!= ia64_info
->self_dtpmod_offset
)
3270 done
= dyn_i
->dtpmod_done
;
3271 dyn_i
->dtpmod_done
= true;
3275 done
= ia64_info
->self_dtpmod_done
;
3276 ia64_info
->self_dtpmod_done
= true;
3279 got_offset
= dyn_i
->dtpmod_offset
;
3281 case R_IA64_DTPREL32LSB
:
3282 case R_IA64_DTPREL64LSB
:
3283 done
= dyn_i
->dtprel_done
;
3284 dyn_i
->dtprel_done
= true;
3285 got_offset
= dyn_i
->dtprel_offset
;
3288 done
= dyn_i
->got_done
;
3289 dyn_i
->got_done
= true;
3290 got_offset
= dyn_i
->got_offset
;
3294 BFD_ASSERT ((got_offset
& 7) == 0);
3298 /* Store the target address in the linkage table entry. */
3299 bfd_put_64 (abfd
, value
, got_sec
->contents
+ got_offset
);
3301 /* Install a dynamic relocation if needed. */
3302 if (((bfd_link_pic (info
)
3304 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3305 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
3306 && dyn_r_type
!= R_IA64_DTPREL32LSB
3307 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3308 || elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, info
, dyn_r_type
)
3310 && (dyn_r_type
== R_IA64_FPTR32LSB
3311 || dyn_r_type
== R_IA64_FPTR64LSB
)))
3312 && (!dyn_i
->want_ltoff_fptr
3313 || !bfd_link_pie (info
)
3315 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3318 && dyn_r_type
!= R_IA64_TPREL64LSB
3319 && dyn_r_type
!= R_IA64_DTPMOD64LSB
3320 && dyn_r_type
!= R_IA64_DTPREL32LSB
3321 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3323 dyn_r_type
= R_IA64_RELNNLSB
;
3328 if (bfd_big_endian (abfd
))
3332 case R_IA64_REL32LSB
:
3333 dyn_r_type
= R_IA64_REL32MSB
;
3335 case R_IA64_DIR32LSB
:
3336 dyn_r_type
= R_IA64_DIR32MSB
;
3338 case R_IA64_FPTR32LSB
:
3339 dyn_r_type
= R_IA64_FPTR32MSB
;
3341 case R_IA64_DTPREL32LSB
:
3342 dyn_r_type
= R_IA64_DTPREL32MSB
;
3344 case R_IA64_REL64LSB
:
3345 dyn_r_type
= R_IA64_REL64MSB
;
3347 case R_IA64_DIR64LSB
:
3348 dyn_r_type
= R_IA64_DIR64MSB
;
3350 case R_IA64_FPTR64LSB
:
3351 dyn_r_type
= R_IA64_FPTR64MSB
;
3353 case R_IA64_TPREL64LSB
:
3354 dyn_r_type
= R_IA64_TPREL64MSB
;
3356 case R_IA64_DTPMOD64LSB
:
3357 dyn_r_type
= R_IA64_DTPMOD64MSB
;
3359 case R_IA64_DTPREL64LSB
:
3360 dyn_r_type
= R_IA64_DTPREL64MSB
;
3368 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, got_sec
,
3369 ia64_info
->root
.srelgot
,
3370 got_offset
, dyn_r_type
,
3375 /* Return the address of the linkage table entry. */
3376 value
= (got_sec
->output_section
->vma
3377 + got_sec
->output_offset
3383 /* Fill in a function descriptor consisting of the function's code
3384 address and its global pointer. Return the descriptor's address. */
3387 set_fptr_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3388 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3391 struct elfNN_ia64_link_hash_table
*ia64_info
;
3394 ia64_info
= elfNN_ia64_hash_table (info
);
3395 if (ia64_info
== NULL
)
3398 fptr_sec
= ia64_info
->fptr_sec
;
3400 if (!dyn_i
->fptr_done
)
3402 dyn_i
->fptr_done
= 1;
3404 /* Fill in the function descriptor. */
3405 bfd_put_64 (abfd
, value
, fptr_sec
->contents
+ dyn_i
->fptr_offset
);
3406 bfd_put_64 (abfd
, _bfd_get_gp_value (abfd
),
3407 fptr_sec
->contents
+ dyn_i
->fptr_offset
+ 8);
3408 if (ia64_info
->rel_fptr_sec
)
3410 Elf_Internal_Rela outrel
;
3413 if (bfd_little_endian (abfd
))
3414 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTLSB
);
3416 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTMSB
);
3417 outrel
.r_addend
= value
;
3418 outrel
.r_offset
= (fptr_sec
->output_section
->vma
3419 + fptr_sec
->output_offset
3420 + dyn_i
->fptr_offset
);
3421 loc
= ia64_info
->rel_fptr_sec
->contents
;
3422 loc
+= ia64_info
->rel_fptr_sec
->reloc_count
++
3423 * sizeof (ElfNN_External_Rela
);
3424 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3428 /* Return the descriptor's address. */
3429 value
= (fptr_sec
->output_section
->vma
3430 + fptr_sec
->output_offset
3431 + dyn_i
->fptr_offset
);
3436 /* Fill in a PLTOFF entry consisting of the function's code address
3437 and its global pointer. Return the descriptor's address. */
3440 set_pltoff_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3441 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3442 bfd_vma value
, bool is_plt
)
3444 struct elfNN_ia64_link_hash_table
*ia64_info
;
3445 asection
*pltoff_sec
;
3447 ia64_info
= elfNN_ia64_hash_table (info
);
3448 if (ia64_info
== NULL
)
3451 pltoff_sec
= ia64_info
->pltoff_sec
;
3453 /* Don't do anything if this symbol uses a real PLT entry. In
3454 that case, we'll fill this in during finish_dynamic_symbol. */
3455 if ((! dyn_i
->want_plt
|| is_plt
)
3456 && !dyn_i
->pltoff_done
)
3458 bfd_vma gp
= _bfd_get_gp_value (abfd
);
3460 /* Fill in the function descriptor. */
3461 bfd_put_64 (abfd
, value
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
);
3462 bfd_put_64 (abfd
, gp
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
+ 8);
3464 /* Install dynamic relocations if needed. */
3466 && bfd_link_pic (info
)
3468 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3469 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3471 unsigned int dyn_r_type
;
3473 if (bfd_big_endian (abfd
))
3474 dyn_r_type
= R_IA64_RELNNMSB
;
3476 dyn_r_type
= R_IA64_RELNNLSB
;
3478 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3479 ia64_info
->rel_pltoff_sec
,
3480 dyn_i
->pltoff_offset
,
3481 dyn_r_type
, 0, value
);
3482 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3483 ia64_info
->rel_pltoff_sec
,
3484 dyn_i
->pltoff_offset
+ ARCH_SIZE
/ 8,
3488 dyn_i
->pltoff_done
= 1;
3491 /* Return the descriptor's address. */
3492 value
= (pltoff_sec
->output_section
->vma
3493 + pltoff_sec
->output_offset
3494 + dyn_i
->pltoff_offset
);
3499 /* Return the base VMA address which should be subtracted from real addresses
3500 when resolving @tprel() relocation.
3501 Main program TLS (whose template starts at PT_TLS p_vaddr)
3502 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3505 elfNN_ia64_tprel_base (struct bfd_link_info
*info
)
3507 asection
*tls_sec
= elf_hash_table (info
)->tls_sec
;
3508 return tls_sec
->vma
- align_power ((bfd_vma
) ARCH_SIZE
/ 4,
3509 tls_sec
->alignment_power
);
3512 /* Return the base VMA address which should be subtracted from real addresses
3513 when resolving @dtprel() relocation.
3514 This is PT_TLS segment p_vaddr. */
3517 elfNN_ia64_dtprel_base (struct bfd_link_info
*info
)
3519 return elf_hash_table (info
)->tls_sec
->vma
;
3522 /* Called through qsort to sort the .IA_64.unwind section during a
3523 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3524 to the output bfd so we can do proper endianness frobbing. */
3526 static bfd
*elfNN_ia64_unwind_entry_compare_bfd
;
3529 elfNN_ia64_unwind_entry_compare (const void * a
, const void * b
)
3533 av
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, a
);
3534 bv
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, b
);
3536 return (av
< bv
? -1 : av
> bv
? 1 : 0);
3539 /* Make sure we've got ourselves a nice fat __gp value. */
3541 elfNN_ia64_choose_gp (bfd
*abfd
, struct bfd_link_info
*info
, bool final
)
3543 bfd_vma min_vma
= (bfd_vma
) -1, max_vma
= 0;
3544 bfd_vma min_short_vma
= min_vma
, max_short_vma
= 0;
3545 struct elf_link_hash_entry
*gp
;
3548 struct elfNN_ia64_link_hash_table
*ia64_info
;
3550 ia64_info
= elfNN_ia64_hash_table (info
);
3551 if (ia64_info
== NULL
)
3554 /* Find the min and max vma of all sections marked short. Also collect
3555 min and max vma of any type, for use in selecting a nice gp. */
3556 for (os
= abfd
->sections
; os
; os
= os
->next
)
3560 if ((os
->flags
& SEC_ALLOC
) == 0)
3564 /* When this function is called from elfNN_ia64_final_link
3565 the correct value to use is os->size. When called from
3566 elfNN_ia64_relax_section we are in the middle of section
3567 sizing; some sections will already have os->size set, others
3568 will have os->size zero and os->rawsize the previous size. */
3569 hi
= os
->vma
+ (!final
&& os
->rawsize
? os
->rawsize
: os
->size
);
3577 if (os
->flags
& SEC_SMALL_DATA
)
3579 if (min_short_vma
> lo
)
3581 if (max_short_vma
< hi
)
3586 if (ia64_info
->min_short_sec
)
3589 > (ia64_info
->min_short_sec
->vma
3590 + ia64_info
->min_short_offset
))
3591 min_short_vma
= (ia64_info
->min_short_sec
->vma
3592 + ia64_info
->min_short_offset
);
3594 < (ia64_info
->max_short_sec
->vma
3595 + ia64_info
->max_short_offset
))
3596 max_short_vma
= (ia64_info
->max_short_sec
->vma
3597 + ia64_info
->max_short_offset
);
3600 /* See if the user wants to force a value. */
3601 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", false,
3605 && (gp
->root
.type
== bfd_link_hash_defined
3606 || gp
->root
.type
== bfd_link_hash_defweak
))
3608 asection
*gp_sec
= gp
->root
.u
.def
.section
;
3609 gp_val
= (gp
->root
.u
.def
.value
3610 + gp_sec
->output_section
->vma
3611 + gp_sec
->output_offset
);
3615 /* Pick a sensible value. */
3617 if (ia64_info
->min_short_sec
)
3619 bfd_vma short_range
= max_short_vma
- min_short_vma
;
3621 /* If min_short_sec is set, pick one in the middle bewteen
3622 min_short_vma and max_short_vma. */
3623 if (short_range
>= 0x400000)
3625 gp_val
= min_short_vma
+ short_range
/ 2;
3629 asection
*got_sec
= ia64_info
->root
.sgot
;
3631 /* Start with just the address of the .got. */
3633 gp_val
= got_sec
->output_section
->vma
;
3634 else if (max_short_vma
!= 0)
3635 gp_val
= min_short_vma
;
3636 else if (max_vma
- min_vma
< 0x200000)
3639 gp_val
= max_vma
- 0x200000 + 8;
3642 /* If it is possible to address the entire image, but we
3643 don't with the choice above, adjust. */
3644 if (max_vma
- min_vma
< 0x400000
3645 && (max_vma
- gp_val
>= 0x200000
3646 || gp_val
- min_vma
> 0x200000))
3647 gp_val
= min_vma
+ 0x200000;
3648 else if (max_short_vma
!= 0)
3650 /* If we don't cover all the short data, adjust. */
3651 if (max_short_vma
- gp_val
>= 0x200000)
3652 gp_val
= min_short_vma
+ 0x200000;
3654 /* If we're addressing stuff past the end, adjust back. */
3655 if (gp_val
> max_vma
)
3656 gp_val
= max_vma
- 0x200000 + 8;
3660 /* Validate whether all SHF_IA_64_SHORT sections are within
3661 range of the chosen GP. */
3663 if (max_short_vma
!= 0)
3665 if (max_short_vma
- min_short_vma
>= 0x400000)
3669 /* xgettext:c-format */
3670 (_("%pB: short data segment overflowed (%#" PRIx64
" >= 0x400000)"),
3671 abfd
, (uint64_t) (max_short_vma
- min_short_vma
));
3674 else if ((gp_val
> min_short_vma
3675 && gp_val
- min_short_vma
> 0x200000)
3676 || (gp_val
< max_short_vma
3677 && max_short_vma
- gp_val
>= 0x200000))
3680 (_("%pB: __gp does not cover short data segment"), abfd
);
3685 _bfd_set_gp_value (abfd
, gp_val
);
3691 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3693 struct elfNN_ia64_link_hash_table
*ia64_info
;
3694 asection
*unwind_output_sec
;
3696 ia64_info
= elfNN_ia64_hash_table (info
);
3697 if (ia64_info
== NULL
)
3700 /* Make sure we've got ourselves a nice fat __gp value. */
3701 if (!bfd_link_relocatable (info
))
3704 struct elf_link_hash_entry
*gp
;
3706 /* We assume after gp is set, section size will only decrease. We
3707 need to adjust gp for it. */
3708 _bfd_set_gp_value (abfd
, 0);
3709 if (! elfNN_ia64_choose_gp (abfd
, info
, true))
3711 gp_val
= _bfd_get_gp_value (abfd
);
3713 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", false,
3717 gp
->root
.type
= bfd_link_hash_defined
;
3718 gp
->root
.u
.def
.value
= gp_val
;
3719 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3723 /* If we're producing a final executable, we need to sort the contents
3724 of the .IA_64.unwind section. Force this section to be relocated
3725 into memory rather than written immediately to the output file. */
3726 unwind_output_sec
= NULL
;
3727 if (!bfd_link_relocatable (info
))
3729 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3732 unwind_output_sec
= s
->output_section
;
3733 unwind_output_sec
->contents
3734 = bfd_malloc (unwind_output_sec
->size
);
3735 if (unwind_output_sec
->contents
== NULL
)
3740 /* Invoke the regular ELF backend linker to do all the work. */
3741 if (!bfd_elf_final_link (abfd
, info
))
3744 if (unwind_output_sec
)
3746 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3747 qsort (unwind_output_sec
->contents
,
3748 (size_t) (unwind_output_sec
->size
/ 24),
3750 elfNN_ia64_unwind_entry_compare
);
3752 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3753 unwind_output_sec
->contents
, (bfd_vma
) 0,
3754 unwind_output_sec
->size
))
3762 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3763 struct bfd_link_info
*info
,
3765 asection
*input_section
,
3767 Elf_Internal_Rela
*relocs
,
3768 Elf_Internal_Sym
*local_syms
,
3769 asection
**local_sections
)
3771 struct elfNN_ia64_link_hash_table
*ia64_info
;
3772 Elf_Internal_Shdr
*symtab_hdr
;
3773 Elf_Internal_Rela
*rel
;
3774 Elf_Internal_Rela
*relend
;
3776 bool ret_val
= true; /* for non-fatal errors */
3779 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3780 ia64_info
= elfNN_ia64_hash_table (info
);
3781 if (ia64_info
== NULL
)
3784 /* Infect various flags from the input section to the output section. */
3785 if (bfd_link_relocatable (info
))
3789 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3790 flags
&= SHF_IA_64_NORECOV
;
3792 elf_section_data(input_section
->output_section
)
3793 ->this_hdr
.sh_flags
|= flags
;
3796 gp_val
= _bfd_get_gp_value (output_bfd
);
3797 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, false);
3800 relend
= relocs
+ input_section
->reloc_count
;
3801 for (; rel
< relend
; ++rel
)
3803 struct elf_link_hash_entry
*h
;
3804 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3805 bfd_reloc_status_type r
;
3806 reloc_howto_type
*howto
;
3807 unsigned long r_symndx
;
3808 Elf_Internal_Sym
*sym
;
3809 unsigned int r_type
;
3813 bool dynamic_symbol_p
;
3814 bool undef_weak_ref
;
3816 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3817 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3819 /* xgettext:c-format */
3820 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3821 input_bfd
, (int) r_type
);
3822 bfd_set_error (bfd_error_bad_value
);
3827 howto
= ia64_elf_lookup_howto (r_type
);
3834 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3838 undef_weak_ref
= false;
3840 if (r_symndx
< symtab_hdr
->sh_info
)
3842 /* Reloc against local symbol. */
3844 sym
= local_syms
+ r_symndx
;
3845 sym_sec
= local_sections
[r_symndx
];
3847 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3848 if (!bfd_link_relocatable (info
)
3849 && (sym_sec
->flags
& SEC_MERGE
) != 0
3850 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3851 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3853 struct elfNN_ia64_local_hash_entry
*loc_h
;
3855 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, false);
3856 if (loc_h
&& ! loc_h
->sec_merge_done
)
3858 struct elfNN_ia64_dyn_sym_info
*dynent
;
3861 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3867 _bfd_merged_section_offset (output_bfd
, &msec
,
3868 elf_section_data (msec
)->
3872 dynent
->addend
-= sym
->st_value
;
3873 dynent
->addend
+= msec
->output_section
->vma
3874 + msec
->output_offset
3875 - sym_sec
->output_section
->vma
3876 - sym_sec
->output_offset
;
3879 /* We may have introduced duplicated entries. We need
3880 to remove them properly. */
3881 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3882 if (count
!= loc_h
->count
)
3884 loc_h
->count
= count
;
3885 loc_h
->sorted_count
= count
;
3888 loc_h
->sec_merge_done
= 1;
3894 bool unresolved_reloc
;
3895 bool warned
, ignored
;
3896 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3898 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3899 r_symndx
, symtab_hdr
, sym_hashes
,
3901 unresolved_reloc
, warned
, ignored
);
3903 if (h
->root
.type
== bfd_link_hash_undefweak
)
3904 undef_weak_ref
= true;
3905 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3909 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3910 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3911 rel
, 1, relend
, howto
, 0, contents
);
3913 if (bfd_link_relocatable (info
))
3916 hit_addr
= contents
+ rel
->r_offset
;
3917 value
+= rel
->r_addend
;
3918 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3929 case R_IA64_DIR32MSB
:
3930 case R_IA64_DIR32LSB
:
3931 case R_IA64_DIR64MSB
:
3932 case R_IA64_DIR64LSB
:
3933 /* Install a dynamic relocation for this reloc. */
3934 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3935 && r_symndx
!= STN_UNDEF
3936 && (input_section
->flags
& SEC_ALLOC
) != 0)
3938 unsigned int dyn_r_type
;
3942 BFD_ASSERT (srel
!= NULL
);
3949 /* ??? People shouldn't be doing non-pic code in
3950 shared libraries nor dynamic executables. */
3952 /* xgettext:c-format */
3953 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
3955 h
? h
->root
.root
.string
3956 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
3965 /* If we don't need dynamic symbol lookup, find a
3966 matching RELATIVE relocation. */
3967 dyn_r_type
= r_type
;
3968 if (dynamic_symbol_p
)
3970 dynindx
= h
->dynindx
;
3971 addend
= rel
->r_addend
;
3978 case R_IA64_DIR32MSB
:
3979 dyn_r_type
= R_IA64_REL32MSB
;
3981 case R_IA64_DIR32LSB
:
3982 dyn_r_type
= R_IA64_REL32LSB
;
3984 case R_IA64_DIR64MSB
:
3985 dyn_r_type
= R_IA64_REL64MSB
;
3987 case R_IA64_DIR64LSB
:
3988 dyn_r_type
= R_IA64_REL64LSB
;
3998 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
3999 srel
, rel
->r_offset
, dyn_r_type
,
4004 case R_IA64_LTV32MSB
:
4005 case R_IA64_LTV32LSB
:
4006 case R_IA64_LTV64MSB
:
4007 case R_IA64_LTV64LSB
:
4008 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4011 case R_IA64_GPREL22
:
4012 case R_IA64_GPREL64I
:
4013 case R_IA64_GPREL32MSB
:
4014 case R_IA64_GPREL32LSB
:
4015 case R_IA64_GPREL64MSB
:
4016 case R_IA64_GPREL64LSB
:
4017 if (dynamic_symbol_p
)
4020 /* xgettext:c-format */
4021 (_("%pB: @gprel relocation against dynamic symbol %s"),
4023 h
? h
->root
.root
.string
4024 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4030 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4033 case R_IA64_LTOFF22
:
4034 case R_IA64_LTOFF22X
:
4035 case R_IA64_LTOFF64I
:
4036 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, false);
4037 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4038 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4040 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4043 case R_IA64_PLTOFF22
:
4044 case R_IA64_PLTOFF64I
:
4045 case R_IA64_PLTOFF64MSB
:
4046 case R_IA64_PLTOFF64LSB
:
4047 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, false);
4048 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, false);
4050 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4053 case R_IA64_FPTR64I
:
4054 case R_IA64_FPTR32MSB
:
4055 case R_IA64_FPTR32LSB
:
4056 case R_IA64_FPTR64MSB
:
4057 case R_IA64_FPTR64LSB
:
4058 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, false);
4059 if (dyn_i
->want_fptr
)
4061 if (!undef_weak_ref
)
4062 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4064 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4067 unsigned int dyn_r_type
= r_type
;
4068 bfd_vma addend
= rel
->r_addend
;
4070 /* Otherwise, we expect the dynamic linker to create
4073 if (dyn_i
->want_fptr
)
4075 if (r_type
== R_IA64_FPTR64I
)
4077 /* We can't represent this without a dynamic symbol.
4078 Adjust the relocation to be against an output
4079 section symbol, which are always present in the
4080 dynamic symbol table. */
4081 /* ??? People shouldn't be doing non-pic code in
4082 shared libraries. Hork. */
4084 (_("%pB: linking non-pic code in a position independent executable"),
4091 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4095 if (h
->dynindx
!= -1)
4096 dynindx
= h
->dynindx
;
4098 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4099 (info
, h
->root
.u
.def
.section
->owner
,
4100 global_sym_index (h
)));
4105 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4106 (info
, input_bfd
, (long) r_symndx
));
4110 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4111 srel
, rel
->r_offset
, dyn_r_type
,
4115 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4118 case R_IA64_LTOFF_FPTR22
:
4119 case R_IA64_LTOFF_FPTR64I
:
4120 case R_IA64_LTOFF_FPTR32MSB
:
4121 case R_IA64_LTOFF_FPTR32LSB
:
4122 case R_IA64_LTOFF_FPTR64MSB
:
4123 case R_IA64_LTOFF_FPTR64LSB
:
4127 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, false);
4128 if (dyn_i
->want_fptr
)
4130 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4131 if (!undef_weak_ref
)
4132 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4137 /* Otherwise, we expect the dynamic linker to create
4141 if (h
->dynindx
!= -1)
4142 dynindx
= h
->dynindx
;
4144 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4145 (info
, h
->root
.u
.def
.section
->owner
,
4146 global_sym_index (h
)));
4149 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4150 (info
, input_bfd
, (long) r_symndx
));
4154 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4155 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4157 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4161 case R_IA64_PCREL32MSB
:
4162 case R_IA64_PCREL32LSB
:
4163 case R_IA64_PCREL64MSB
:
4164 case R_IA64_PCREL64LSB
:
4165 /* Install a dynamic relocation for this reloc. */
4166 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4168 BFD_ASSERT (srel
!= NULL
);
4170 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4171 srel
, rel
->r_offset
, r_type
,
4172 h
->dynindx
, rel
->r_addend
);
4176 case R_IA64_PCREL21B
:
4177 case R_IA64_PCREL60B
:
4178 /* We should have created a PLT entry for any dynamic symbol. */
4181 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, false);
4183 if (dyn_i
&& dyn_i
->want_plt2
)
4185 /* Should have caught this earlier. */
4186 BFD_ASSERT (rel
->r_addend
== 0);
4188 value
= (ia64_info
->root
.splt
->output_section
->vma
4189 + ia64_info
->root
.splt
->output_offset
4190 + dyn_i
->plt2_offset
);
4194 /* Since there's no PLT entry, Validate that this is
4196 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4198 /* If the symbol is undef_weak, we shouldn't be trying
4199 to call it. There's every chance that we'd wind up
4200 with an out-of-range fixup here. Don't bother setting
4201 any value at all. */
4207 case R_IA64_PCREL21BI
:
4208 case R_IA64_PCREL21F
:
4209 case R_IA64_PCREL21M
:
4210 case R_IA64_PCREL22
:
4211 case R_IA64_PCREL64I
:
4212 /* The PCREL21BI reloc is specifically not intended for use with
4213 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4214 fixup code, and thus probably ought not be dynamic. The
4215 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4216 if (dynamic_symbol_p
)
4220 if (r_type
== R_IA64_PCREL21BI
)
4221 /* xgettext:c-format */
4222 msg
= _("%pB: @internal branch to dynamic symbol %s");
4223 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4224 /* xgettext:c-format */
4225 msg
= _("%pB: speculation fixup to dynamic symbol %s");
4227 /* xgettext:c-format */
4228 msg
= _("%pB: @pcrel relocation against dynamic symbol %s");
4229 _bfd_error_handler (msg
, input_bfd
,
4230 h
? h
->root
.root
.string
4231 : bfd_elf_sym_name (input_bfd
,
4241 /* Make pc-relative. */
4242 value
-= (input_section
->output_section
->vma
4243 + input_section
->output_offset
4244 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4245 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4248 case R_IA64_SEGREL32MSB
:
4249 case R_IA64_SEGREL32LSB
:
4250 case R_IA64_SEGREL64MSB
:
4251 case R_IA64_SEGREL64LSB
:
4253 /* Find the segment that contains the output_section. */
4254 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4255 (output_bfd
, input_section
->output_section
);
4259 r
= bfd_reloc_notsupported
;
4263 /* The VMA of the segment is the vaddr of the associated
4265 if (value
> p
->p_vaddr
)
4266 value
-= p
->p_vaddr
;
4269 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4274 case R_IA64_SECREL32MSB
:
4275 case R_IA64_SECREL32LSB
:
4276 case R_IA64_SECREL64MSB
:
4277 case R_IA64_SECREL64LSB
:
4278 /* Make output-section relative to section where the symbol
4279 is defined. PR 475 */
4281 value
-= sym_sec
->output_section
->vma
;
4282 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4285 case R_IA64_IPLTMSB
:
4286 case R_IA64_IPLTLSB
:
4287 /* Install a dynamic relocation for this reloc. */
4288 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4289 && (input_section
->flags
& SEC_ALLOC
) != 0)
4291 BFD_ASSERT (srel
!= NULL
);
4293 /* If we don't need dynamic symbol lookup, install two
4294 RELATIVE relocations. */
4295 if (!dynamic_symbol_p
)
4297 unsigned int dyn_r_type
;
4299 if (r_type
== R_IA64_IPLTMSB
)
4300 dyn_r_type
= R_IA64_REL64MSB
;
4302 dyn_r_type
= R_IA64_REL64LSB
;
4304 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4306 srel
, rel
->r_offset
,
4307 dyn_r_type
, 0, value
);
4308 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4310 srel
, rel
->r_offset
+ 8,
4311 dyn_r_type
, 0, gp_val
);
4314 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4315 srel
, rel
->r_offset
, r_type
,
4316 h
->dynindx
, rel
->r_addend
);
4319 if (r_type
== R_IA64_IPLTMSB
)
4320 r_type
= R_IA64_DIR64MSB
;
4322 r_type
= R_IA64_DIR64LSB
;
4323 ia64_elf_install_value (hit_addr
, value
, r_type
);
4324 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4327 case R_IA64_TPREL14
:
4328 case R_IA64_TPREL22
:
4329 case R_IA64_TPREL64I
:
4330 if (elf_hash_table (info
)->tls_sec
== NULL
)
4331 goto missing_tls_sec
;
4332 value
-= elfNN_ia64_tprel_base (info
);
4333 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4336 case R_IA64_DTPREL14
:
4337 case R_IA64_DTPREL22
:
4338 case R_IA64_DTPREL64I
:
4339 case R_IA64_DTPREL32LSB
:
4340 case R_IA64_DTPREL32MSB
:
4341 case R_IA64_DTPREL64LSB
:
4342 case R_IA64_DTPREL64MSB
:
4343 if (elf_hash_table (info
)->tls_sec
== NULL
)
4344 goto missing_tls_sec
;
4345 value
-= elfNN_ia64_dtprel_base (info
);
4346 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4349 case R_IA64_LTOFF_TPREL22
:
4350 case R_IA64_LTOFF_DTPMOD22
:
4351 case R_IA64_LTOFF_DTPREL22
:
4354 long dynindx
= h
? h
->dynindx
: -1;
4355 bfd_vma r_addend
= rel
->r_addend
;
4360 case R_IA64_LTOFF_TPREL22
:
4361 if (!dynamic_symbol_p
)
4363 if (elf_hash_table (info
)->tls_sec
== NULL
)
4364 goto missing_tls_sec
;
4365 if (!bfd_link_pic (info
))
4366 value
-= elfNN_ia64_tprel_base (info
);
4369 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4373 got_r_type
= R_IA64_TPREL64LSB
;
4375 case R_IA64_LTOFF_DTPMOD22
:
4376 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4378 got_r_type
= R_IA64_DTPMOD64LSB
;
4380 case R_IA64_LTOFF_DTPREL22
:
4381 if (!dynamic_symbol_p
)
4383 if (elf_hash_table (info
)->tls_sec
== NULL
)
4384 goto missing_tls_sec
;
4385 value
-= elfNN_ia64_dtprel_base (info
);
4387 got_r_type
= R_IA64_DTPRELNNLSB
;
4390 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, false);
4391 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4394 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4399 r
= bfd_reloc_notsupported
;
4408 case bfd_reloc_undefined
:
4409 /* This can happen for global table relative relocs if
4410 __gp is undefined. This is a panic situation so we
4411 don't try to continue. */
4412 (*info
->callbacks
->undefined_symbol
)
4413 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4416 case bfd_reloc_notsupported
:
4421 name
= h
->root
.root
.string
;
4423 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4425 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4427 input_section
, rel
->r_offset
);
4432 case bfd_reloc_dangerous
:
4433 case bfd_reloc_outofrange
:
4434 case bfd_reloc_overflow
:
4441 name
= h
->root
.root
.string
;
4443 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4448 case R_IA64_TPREL14
:
4449 case R_IA64_TPREL22
:
4450 case R_IA64_TPREL64I
:
4451 case R_IA64_DTPREL14
:
4452 case R_IA64_DTPREL22
:
4453 case R_IA64_DTPREL64I
:
4454 case R_IA64_DTPREL32LSB
:
4455 case R_IA64_DTPREL32MSB
:
4456 case R_IA64_DTPREL64LSB
:
4457 case R_IA64_DTPREL64MSB
:
4458 case R_IA64_LTOFF_TPREL22
:
4459 case R_IA64_LTOFF_DTPMOD22
:
4460 case R_IA64_LTOFF_DTPREL22
:
4462 /* xgettext:c-format */
4463 (_("%pB: missing TLS section for relocation %s against `%s'"
4464 " at %#" PRIx64
" in section `%pA'."),
4465 input_bfd
, howto
->name
, name
,
4466 (uint64_t) rel
->r_offset
, input_section
);
4469 case R_IA64_PCREL21B
:
4470 case R_IA64_PCREL21BI
:
4471 case R_IA64_PCREL21M
:
4472 case R_IA64_PCREL21F
:
4473 if (is_elf_hash_table (info
->hash
))
4475 /* Relaxtion is always performed for ELF output.
4476 Overflow failures for those relocations mean
4477 that the section is too big to relax. */
4479 /* xgettext:c-format */
4480 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4481 " in section `%pA' with size %#" PRIx64
4483 input_bfd
, howto
->name
, name
, (uint64_t) rel
->r_offset
,
4484 input_section
, (uint64_t) input_section
->size
);
4489 (*info
->callbacks
->reloc_overflow
) (info
,
4510 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4511 struct bfd_link_info
*info
,
4512 struct elf_link_hash_entry
*h
,
4513 Elf_Internal_Sym
*sym
)
4515 struct elfNN_ia64_link_hash_table
*ia64_info
;
4516 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4518 ia64_info
= elfNN_ia64_hash_table (info
);
4519 if (ia64_info
== NULL
)
4522 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, false);
4524 /* Fill in the PLT data, if required. */
4525 if (dyn_i
&& dyn_i
->want_plt
)
4527 Elf_Internal_Rela outrel
;
4530 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4532 gp_val
= _bfd_get_gp_value (output_bfd
);
4534 /* Initialize the minimal PLT entry. */
4536 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4537 plt_sec
= ia64_info
->root
.splt
;
4538 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4540 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4541 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4542 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4544 plt_addr
= (plt_sec
->output_section
->vma
4545 + plt_sec
->output_offset
4546 + dyn_i
->plt_offset
);
4547 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, true);
4549 /* Initialize the FULL PLT entry, if needed. */
4550 if (dyn_i
->want_plt2
)
4552 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4554 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4555 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4557 /* Mark the symbol as undefined, rather than as defined in the
4558 plt section. Leave the value alone. */
4559 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4560 first place. But perhaps elflink.c did some for us. */
4561 if (!h
->def_regular
)
4562 sym
->st_shndx
= SHN_UNDEF
;
4565 /* Create the dynamic relocation. */
4566 outrel
.r_offset
= pltoff_addr
;
4567 if (bfd_little_endian (output_bfd
))
4568 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4570 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4571 outrel
.r_addend
= 0;
4573 /* This is fun. In the .IA_64.pltoff section, we've got entries
4574 that correspond both to real PLT entries, and those that
4575 happened to resolve to local symbols but need to be created
4576 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4577 relocations for the real PLT should come at the end of the
4578 section, so that they can be indexed by plt entry at runtime.
4580 We emitted all of the relocations for the non-PLT @pltoff
4581 entries during relocate_section. So we can consider the
4582 existing sec->reloc_count to be the base of the array of
4585 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4586 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4587 * sizeof (ElfNN_External_Rela
));
4588 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4591 /* Mark some specially defined symbols as absolute. */
4592 if (h
== ia64_info
->root
.hdynamic
4593 || h
== ia64_info
->root
.hgot
4594 || h
== ia64_info
->root
.hplt
)
4595 sym
->st_shndx
= SHN_ABS
;
4601 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4602 struct bfd_link_info
*info
)
4604 struct elfNN_ia64_link_hash_table
*ia64_info
;
4607 ia64_info
= elfNN_ia64_hash_table (info
);
4608 if (ia64_info
== NULL
)
4611 dynobj
= ia64_info
->root
.dynobj
;
4613 if (ia64_info
->root
.dynamic_sections_created
)
4615 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4616 asection
*sdyn
, *sgotplt
;
4619 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4620 sgotplt
= ia64_info
->root
.sgotplt
;
4621 BFD_ASSERT (sdyn
!= NULL
);
4622 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4623 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4625 gp_val
= _bfd_get_gp_value (abfd
);
4627 for (; dyncon
< dynconend
; dyncon
++)
4629 Elf_Internal_Dyn dyn
;
4631 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4636 dyn
.d_un
.d_ptr
= gp_val
;
4640 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4641 * sizeof (ElfNN_External_Rela
));
4645 /* See the comment above in finish_dynamic_symbol. */
4646 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4647 + ia64_info
->rel_pltoff_sec
->output_offset
4648 + (ia64_info
->rel_pltoff_sec
->reloc_count
4649 * sizeof (ElfNN_External_Rela
)));
4652 case DT_IA_64_PLT_RESERVE
:
4653 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4654 + sgotplt
->output_offset
);
4658 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4661 /* Initialize the PLT0 entry. */
4662 if (ia64_info
->root
.splt
)
4664 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4667 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4669 pltres
= (sgotplt
->output_section
->vma
4670 + sgotplt
->output_offset
4673 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4680 /* ELF file flag handling: */
4682 /* Function to keep IA-64 specific file flags. */
4684 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4686 BFD_ASSERT (!elf_flags_init (abfd
)
4687 || elf_elfheader (abfd
)->e_flags
== flags
);
4689 elf_elfheader (abfd
)->e_flags
= flags
;
4690 elf_flags_init (abfd
) = true;
4694 /* Merge backend specific data from an object file to the output
4695 object file when linking. */
4698 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4700 bfd
*obfd
= info
->output_bfd
;
4705 /* FIXME: What should be checked when linking shared libraries? */
4706 if ((ibfd
->flags
& DYNAMIC
) != 0)
4709 if (!is_ia64_elf (ibfd
) || !is_ia64_elf (obfd
))
4712 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4713 out_flags
= elf_elfheader (obfd
)->e_flags
;
4715 if (! elf_flags_init (obfd
))
4717 elf_flags_init (obfd
) = true;
4718 elf_elfheader (obfd
)->e_flags
= in_flags
;
4720 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4721 && bfd_get_arch_info (obfd
)->the_default
)
4723 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4724 bfd_get_mach (ibfd
));
4730 /* Check flag compatibility. */
4731 if (in_flags
== out_flags
)
4734 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4735 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4736 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4738 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4741 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
4744 bfd_set_error (bfd_error_bad_value
);
4747 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4750 (_("%pB: linking big-endian files with little-endian files"),
4753 bfd_set_error (bfd_error_bad_value
);
4756 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4759 (_("%pB: linking 64-bit files with 32-bit files"),
4762 bfd_set_error (bfd_error_bad_value
);
4765 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4768 (_("%pB: linking constant-gp files with non-constant-gp files"),
4771 bfd_set_error (bfd_error_bad_value
);
4774 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4775 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4778 (_("%pB: linking auto-pic files with non-auto-pic files"),
4781 bfd_set_error (bfd_error_bad_value
);
4789 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4791 FILE *file
= (FILE *) ptr
;
4792 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4794 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4796 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4797 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4798 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4799 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4800 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4801 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4802 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4803 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4804 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4806 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4810 static enum elf_reloc_type_class
4811 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4812 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4813 const Elf_Internal_Rela
*rela
)
4815 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4817 case R_IA64_REL32MSB
:
4818 case R_IA64_REL32LSB
:
4819 case R_IA64_REL64MSB
:
4820 case R_IA64_REL64LSB
:
4821 return reloc_class_relative
;
4822 case R_IA64_IPLTMSB
:
4823 case R_IA64_IPLTLSB
:
4824 return reloc_class_plt
;
4826 return reloc_class_copy
;
4828 return reloc_class_normal
;
4832 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4834 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4835 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4836 { NULL
, 0, 0, 0, 0 }
4840 elfNN_ia64_object_p (bfd
*abfd
)
4843 asection
*group
, *unwi
, *unw
;
4846 char *unwi_name
, *unw_name
;
4849 if (abfd
->flags
& DYNAMIC
)
4852 /* Flags for fake group section. */
4853 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4856 /* We add a fake section group for each .gnu.linkonce.t.* section,
4857 which isn't in a section group, and its unwind sections. */
4858 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4860 if (elf_sec_group (sec
) == NULL
4861 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4862 == (SEC_LINK_ONCE
| SEC_CODE
))
4863 && startswith (sec
->name
, ".gnu.linkonce.t."))
4865 name
= sec
->name
+ 16;
4867 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4868 unwi_name
= bfd_alloc (abfd
, amt
);
4872 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4873 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4875 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4876 unw_name
= bfd_alloc (abfd
, amt
);
4880 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4881 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4883 /* We need to create a fake group section for it and its
4885 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4890 /* Move the fake group section to the beginning. */
4891 bfd_section_list_remove (abfd
, group
);
4892 bfd_section_list_prepend (abfd
, group
);
4894 elf_next_in_group (group
) = sec
;
4896 elf_group_name (sec
) = name
;
4897 elf_next_in_group (sec
) = sec
;
4898 elf_sec_group (sec
) = group
;
4902 elf_group_name (unwi
) = name
;
4903 elf_next_in_group (unwi
) = sec
;
4904 elf_next_in_group (sec
) = unwi
;
4905 elf_sec_group (unwi
) = group
;
4910 elf_group_name (unw
) = name
;
4913 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4914 elf_next_in_group (unwi
) = unw
;
4918 elf_next_in_group (unw
) = sec
;
4919 elf_next_in_group (sec
) = unw
;
4921 elf_sec_group (unw
) = group
;
4924 /* Fake SHT_GROUP section header. */
4925 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4926 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4933 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4935 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4936 return (vec
== &ia64_elfNN_hpux_be_vec
);
4940 elfNN_hpux_init_file_header (bfd
*abfd
, struct bfd_link_info
*info
)
4942 Elf_Internal_Ehdr
*i_ehdrp
;
4944 if (!_bfd_elf_init_file_header (abfd
, info
))
4947 i_ehdrp
= elf_elfheader (abfd
);
4948 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4949 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4954 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4955 asection
*sec
, int *retval
)
4957 if (bfd_is_com_section (sec
))
4959 *retval
= SHN_IA_64_ANSI_COMMON
;
4966 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4969 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
4971 switch (elfsym
->internal_elf_sym
.st_shndx
)
4973 case SHN_IA_64_ANSI_COMMON
:
4974 asym
->section
= bfd_com_section_ptr
;
4975 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
4976 asym
->flags
&= ~BSF_GLOBAL
;
4982 ignore_errors (const char *fmt ATTRIBUTE_UNUSED
, ...)
4986 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4987 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4988 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4989 #define TARGET_BIG_NAME "elfNN-ia64-big"
4990 #define ELF_ARCH bfd_arch_ia64
4991 #define ELF_TARGET_ID IA64_ELF_DATA
4992 #define ELF_MACHINE_CODE EM_IA_64
4993 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4994 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4995 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4996 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4998 #define elf_backend_section_from_shdr \
4999 elfNN_ia64_section_from_shdr
5000 #define elf_backend_section_flags \
5001 elfNN_ia64_section_flags
5002 #define elf_backend_fake_sections \
5003 elfNN_ia64_fake_sections
5004 #define elf_backend_final_write_processing \
5005 elfNN_ia64_final_write_processing
5006 #define elf_backend_add_symbol_hook \
5007 elfNN_ia64_add_symbol_hook
5008 #define elf_backend_additional_program_headers \
5009 elfNN_ia64_additional_program_headers
5010 #define elf_backend_modify_segment_map \
5011 elfNN_ia64_modify_segment_map
5012 #define elf_backend_modify_headers \
5013 elfNN_ia64_modify_headers
5014 #define elf_info_to_howto \
5015 elfNN_ia64_info_to_howto
5017 #define bfd_elfNN_bfd_reloc_type_lookup \
5018 ia64_elf_reloc_type_lookup
5019 #define bfd_elfNN_bfd_reloc_name_lookup \
5020 ia64_elf_reloc_name_lookup
5021 #define bfd_elfNN_bfd_is_local_label_name \
5022 elfNN_ia64_is_local_label_name
5023 #define bfd_elfNN_bfd_relax_section \
5024 elfNN_ia64_relax_section
5026 #define elf_backend_object_p \
5029 /* Stuff for the BFD linker: */
5030 #define bfd_elfNN_bfd_link_hash_table_create \
5031 elfNN_ia64_hash_table_create
5032 #define elf_backend_create_dynamic_sections \
5033 elfNN_ia64_create_dynamic_sections
5034 #define elf_backend_check_relocs \
5035 elfNN_ia64_check_relocs
5036 #define elf_backend_adjust_dynamic_symbol \
5037 elfNN_ia64_adjust_dynamic_symbol
5038 #define elf_backend_size_dynamic_sections \
5039 elfNN_ia64_size_dynamic_sections
5040 #define elf_backend_omit_section_dynsym \
5041 _bfd_elf_omit_section_dynsym_all
5042 #define elf_backend_relocate_section \
5043 elfNN_ia64_relocate_section
5044 #define elf_backend_finish_dynamic_symbol \
5045 elfNN_ia64_finish_dynamic_symbol
5046 #define elf_backend_finish_dynamic_sections \
5047 elfNN_ia64_finish_dynamic_sections
5048 #define bfd_elfNN_bfd_final_link \
5049 elfNN_ia64_final_link
5051 #define bfd_elfNN_bfd_merge_private_bfd_data \
5052 elfNN_ia64_merge_private_bfd_data
5053 #define bfd_elfNN_bfd_set_private_flags \
5054 elfNN_ia64_set_private_flags
5055 #define bfd_elfNN_bfd_print_private_bfd_data \
5056 elfNN_ia64_print_private_bfd_data
5058 #define elf_backend_plt_readonly 1
5059 #define elf_backend_can_gc_sections 1
5060 #define elf_backend_want_plt_sym 0
5061 #define elf_backend_plt_alignment 5
5062 #define elf_backend_got_header_size 0
5063 #define elf_backend_want_got_plt 1
5064 #define elf_backend_may_use_rel_p 1
5065 #define elf_backend_may_use_rela_p 1
5066 #define elf_backend_default_use_rela_p 1
5067 #define elf_backend_want_dynbss 0
5068 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5069 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5070 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5071 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5072 #define elf_backend_rela_normal 1
5073 #define elf_backend_dtrel_excludes_plt 1
5074 #define elf_backend_special_sections elfNN_ia64_special_sections
5075 #define elf_backend_default_execstack 0
5077 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5078 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5079 We don't want to flood users with so many error messages. We turn
5080 off the warning for now. It will be turned on later when the Intel
5081 compiler is fixed. */
5082 #define elf_backend_link_order_error_handler ignore_errors
5084 #include "elfNN-target.h"
5086 /* HPUX-specific vectors. */
5088 #undef TARGET_LITTLE_SYM
5089 #undef TARGET_LITTLE_NAME
5090 #undef TARGET_BIG_SYM
5091 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5092 #undef TARGET_BIG_NAME
5093 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5095 /* These are HP-UX specific functions. */
5097 #undef elf_backend_init_file_header
5098 #define elf_backend_init_file_header elfNN_hpux_init_file_header
5100 #undef elf_backend_section_from_bfd_section
5101 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5103 #undef elf_backend_symbol_processing
5104 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5106 #undef elf_backend_want_p_paddr_set_to_zero
5107 #define elf_backend_want_p_paddr_set_to_zero 1
5109 #undef ELF_COMMONPAGESIZE
5111 #define ELF_OSABI ELFOSABI_HPUX
5114 #define elfNN_bed elfNN_ia64_hpux_bed
5116 #include "elfNN-target.h"