1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2020 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 reltext
: 1; /* Are there relocs against readonly sections? */
147 unsigned self_dtpmod_done
: 1;/* Has self DTPMOD entry been finished? */
148 bfd_vma self_dtpmod_offset
; /* .got offset to self DTPMOD entry. */
149 /* There are maybe R_IA64_GPREL22 relocations, including those
150 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
151 sections. We need to record those sections so that we can choose
152 a proper GP to cover all R_IA64_GPREL22 relocations. */
153 asection
*max_short_sec
; /* Maximum short output section. */
154 bfd_vma max_short_offset
; /* Maximum short offset. */
155 asection
*min_short_sec
; /* Minimum short output section. */
156 bfd_vma min_short_offset
; /* Minimum short offset. */
158 htab_t loc_hash_table
;
159 void *loc_hash_memory
;
162 struct elfNN_ia64_allocate_data
164 struct bfd_link_info
*info
;
166 bfd_boolean only_got
;
169 #define elfNN_ia64_hash_table(p) \
170 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
171 == IA64_ELF_DATA ? ((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
, bfd_boolean create
);
177 static bfd_boolean elfNN_ia64_dynamic_symbol_p
178 (struct elf_link_hash_entry
*h
, struct bfd_link_info
*info
, int);
179 static bfd_boolean elfNN_ia64_choose_gp
180 (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
);
181 static void elfNN_ia64_dyn_sym_traverse
182 (struct elfNN_ia64_link_hash_table
*ia64_info
,
183 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
185 static bfd_boolean allocate_global_data_got
186 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
187 static bfd_boolean allocate_global_fptr_got
188 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
189 static bfd_boolean allocate_local_got
190 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
191 static bfd_boolean elfNN_ia64_hpux_vec
192 (const bfd_target
*vec
);
193 static bfd_boolean 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 bfd_boolean changed_contents
= FALSE
;
353 bfd_boolean changed_relocs
= FALSE
;
354 bfd_boolean changed_got
= FALSE
;
355 bfd_boolean skip_relax_pass_0
= TRUE
;
356 bfd_boolean 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
;
410 bfd_boolean is_branch
;
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. */
889 static inline bfd_boolean
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 ((CONST_STRNEQ (name
, ELF_STRING_ia64_unwind
)
897 && ! CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_info
))
898 || CONST_STRNEQ (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",
1068 | SEC_LINKER_CREATED
));
1074 *valp
= sym
->st_size
;
1080 /* Return the number of additional phdrs we will need. */
1083 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1084 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1089 /* See if we need a PT_IA_64_ARCHEXT segment. */
1090 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1091 if (s
&& (s
->flags
& SEC_LOAD
))
1094 /* Count how many PT_IA_64_UNWIND segments we need. */
1095 for (s
= abfd
->sections
; s
; s
= s
->next
)
1096 if (is_unwind_section_name (abfd
, s
->name
) && (s
->flags
& SEC_LOAD
))
1103 elfNN_ia64_modify_segment_map (bfd
*abfd
,
1104 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1106 struct elf_segment_map
*m
, **pm
;
1107 Elf_Internal_Shdr
*hdr
;
1110 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1111 all PT_LOAD segments. */
1112 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1113 if (s
&& (s
->flags
& SEC_LOAD
))
1115 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1116 if (m
->p_type
== PT_IA_64_ARCHEXT
)
1120 m
= ((struct elf_segment_map
*)
1121 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1125 m
->p_type
= PT_IA_64_ARCHEXT
;
1129 /* We want to put it after the PHDR and INTERP segments. */
1130 pm
= &elf_seg_map (abfd
);
1132 && ((*pm
)->p_type
== PT_PHDR
1133 || (*pm
)->p_type
== PT_INTERP
))
1141 /* Install PT_IA_64_UNWIND segments, if needed. */
1142 for (s
= abfd
->sections
; s
; s
= s
->next
)
1144 hdr
= &elf_section_data (s
)->this_hdr
;
1145 if (hdr
->sh_type
!= SHT_IA_64_UNWIND
)
1148 if (s
&& (s
->flags
& SEC_LOAD
))
1150 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1151 if (m
->p_type
== PT_IA_64_UNWIND
)
1155 /* Look through all sections in the unwind segment
1156 for a match since there may be multiple sections
1158 for (i
= m
->count
- 1; i
>= 0; --i
)
1159 if (m
->sections
[i
] == s
)
1168 m
= ((struct elf_segment_map
*)
1169 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1173 m
->p_type
= PT_IA_64_UNWIND
;
1178 /* We want to put it last. */
1179 pm
= &elf_seg_map (abfd
);
1190 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1191 the input sections for each output section in the segment and testing
1192 for SHF_IA_64_NORECOV on each. */
1195 elfNN_ia64_modify_headers (bfd
*abfd
, struct bfd_link_info
*info
)
1197 struct elf_obj_tdata
*tdata
= elf_tdata (abfd
);
1198 struct elf_segment_map
*m
;
1199 Elf_Internal_Phdr
*p
;
1201 for (p
= tdata
->phdr
, m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
, p
++)
1202 if (m
->p_type
== PT_LOAD
)
1205 for (i
= m
->count
- 1; i
>= 0; --i
)
1207 struct bfd_link_order
*order
= m
->sections
[i
]->map_head
.link_order
;
1209 while (order
!= NULL
)
1211 if (order
->type
== bfd_indirect_link_order
)
1213 asection
*is
= order
->u
.indirect
.section
;
1214 bfd_vma flags
= elf_section_data(is
)->this_hdr
.sh_flags
;
1215 if (flags
& SHF_IA_64_NORECOV
)
1217 p
->p_flags
|= PF_IA_64_NORECOV
;
1221 order
= order
->next
;
1227 return _bfd_elf_modify_headers (abfd
, info
);
1230 /* According to the Tahoe assembler spec, all labels starting with a
1234 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1237 return name
[0] == '.';
1240 /* Should we do dynamic things to this symbol? */
1243 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry
*h
,
1244 struct bfd_link_info
*info
, int r_type
)
1246 bfd_boolean ignore_protected
1247 = ((r_type
& 0xf8) == 0x40 /* FPTR relocs */
1248 || (r_type
& 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1250 return _bfd_elf_dynamic_symbol_p (h
, info
, ignore_protected
);
1253 static struct bfd_hash_entry
*
1254 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry
*entry
,
1255 struct bfd_hash_table
*table
,
1258 struct elfNN_ia64_link_hash_entry
*ret
;
1259 ret
= (struct elfNN_ia64_link_hash_entry
*) entry
;
1261 /* Allocate the structure if it has not already been allocated by a
1264 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
1269 /* Call the allocation method of the superclass. */
1270 ret
= ((struct elfNN_ia64_link_hash_entry
*)
1271 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1276 ret
->sorted_count
= 0;
1278 return (struct bfd_hash_entry
*) ret
;
1282 elfNN_ia64_hash_copy_indirect (struct bfd_link_info
*info
,
1283 struct elf_link_hash_entry
*xdir
,
1284 struct elf_link_hash_entry
*xind
)
1286 struct elfNN_ia64_link_hash_entry
*dir
, *ind
;
1288 dir
= (struct elfNN_ia64_link_hash_entry
*) xdir
;
1289 ind
= (struct elfNN_ia64_link_hash_entry
*) xind
;
1291 /* Copy down any references that we may have already seen to the
1292 symbol which just became indirect. */
1294 if (dir
->root
.versioned
!= versioned_hidden
)
1295 dir
->root
.ref_dynamic
|= ind
->root
.ref_dynamic
;
1296 dir
->root
.ref_regular
|= ind
->root
.ref_regular
;
1297 dir
->root
.ref_regular_nonweak
|= ind
->root
.ref_regular_nonweak
;
1298 dir
->root
.needs_plt
|= ind
->root
.needs_plt
;
1300 if (ind
->root
.root
.type
!= bfd_link_hash_indirect
)
1303 /* Copy over the got and plt data. This would have been done
1306 if (ind
->info
!= NULL
)
1308 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1313 dir
->info
= ind
->info
;
1314 dir
->count
= ind
->count
;
1315 dir
->sorted_count
= ind
->sorted_count
;
1316 dir
->size
= ind
->size
;
1320 ind
->sorted_count
= 0;
1323 /* Fix up the dyn_sym_info pointers to the global symbol. */
1324 for (count
= dir
->count
, dyn_i
= dir
->info
;
1327 dyn_i
->h
= &dir
->root
;
1330 /* Copy over the dynindx. */
1332 if (ind
->root
.dynindx
!= -1)
1334 if (dir
->root
.dynindx
!= -1)
1335 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1336 dir
->root
.dynstr_index
);
1337 dir
->root
.dynindx
= ind
->root
.dynindx
;
1338 dir
->root
.dynstr_index
= ind
->root
.dynstr_index
;
1339 ind
->root
.dynindx
= -1;
1340 ind
->root
.dynstr_index
= 0;
1345 elfNN_ia64_hash_hide_symbol (struct bfd_link_info
*info
,
1346 struct elf_link_hash_entry
*xh
,
1347 bfd_boolean force_local
)
1349 struct elfNN_ia64_link_hash_entry
*h
;
1350 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1353 h
= (struct elfNN_ia64_link_hash_entry
*)xh
;
1355 _bfd_elf_link_hash_hide_symbol (info
, &h
->root
, force_local
);
1357 for (count
= h
->count
, dyn_i
= h
->info
;
1361 dyn_i
->want_plt2
= 0;
1362 dyn_i
->want_plt
= 0;
1366 /* Compute a hash of a local hash entry. */
1369 elfNN_ia64_local_htab_hash (const void *ptr
)
1371 struct elfNN_ia64_local_hash_entry
*entry
1372 = (struct elfNN_ia64_local_hash_entry
*) ptr
;
1374 return ELF_LOCAL_SYMBOL_HASH (entry
->id
, entry
->r_sym
);
1377 /* Compare local hash entries. */
1380 elfNN_ia64_local_htab_eq (const void *ptr1
, const void *ptr2
)
1382 struct elfNN_ia64_local_hash_entry
*entry1
1383 = (struct elfNN_ia64_local_hash_entry
*) ptr1
;
1384 struct elfNN_ia64_local_hash_entry
*entry2
1385 = (struct elfNN_ia64_local_hash_entry
*) ptr2
;
1387 return entry1
->id
== entry2
->id
&& entry1
->r_sym
== entry2
->r_sym
;
1390 /* Free the global elfNN_ia64_dyn_sym_info array. */
1393 elfNN_ia64_global_dyn_info_free (void **xentry
,
1394 void * unused ATTRIBUTE_UNUSED
)
1396 struct elfNN_ia64_link_hash_entry
*entry
1397 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1402 entry
->sorted_count
= 0;
1408 /* Free the local elfNN_ia64_dyn_sym_info array. */
1411 elfNN_ia64_local_dyn_info_free (void **slot
,
1412 void * unused ATTRIBUTE_UNUSED
)
1414 struct elfNN_ia64_local_hash_entry
*entry
1415 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1420 entry
->sorted_count
= 0;
1426 /* Destroy IA-64 linker hash table. */
1429 elfNN_ia64_link_hash_table_free (bfd
*obfd
)
1431 struct elfNN_ia64_link_hash_table
*ia64_info
1432 = (struct elfNN_ia64_link_hash_table
*) obfd
->link
.hash
;
1433 if (ia64_info
->loc_hash_table
)
1435 htab_traverse (ia64_info
->loc_hash_table
,
1436 elfNN_ia64_local_dyn_info_free
, NULL
);
1437 htab_delete (ia64_info
->loc_hash_table
);
1439 if (ia64_info
->loc_hash_memory
)
1440 objalloc_free ((struct objalloc
*) ia64_info
->loc_hash_memory
);
1441 elf_link_hash_traverse (&ia64_info
->root
,
1442 elfNN_ia64_global_dyn_info_free
, NULL
);
1443 _bfd_elf_link_hash_table_free (obfd
);
1446 /* Create the derived linker hash table. The IA-64 ELF port uses this
1447 derived hash table to keep information specific to the IA-64 ElF
1448 linker (without using static variables). */
1450 static struct bfd_link_hash_table
*
1451 elfNN_ia64_hash_table_create (bfd
*abfd
)
1453 struct elfNN_ia64_link_hash_table
*ret
;
1455 ret
= bfd_zmalloc ((bfd_size_type
) sizeof (*ret
));
1459 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1460 elfNN_ia64_new_elf_hash_entry
,
1461 sizeof (struct elfNN_ia64_link_hash_entry
),
1468 ret
->loc_hash_table
= htab_try_create (1024, elfNN_ia64_local_htab_hash
,
1469 elfNN_ia64_local_htab_eq
, NULL
);
1470 ret
->loc_hash_memory
= objalloc_create ();
1471 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
1473 elfNN_ia64_link_hash_table_free (abfd
);
1476 ret
->root
.root
.hash_table_free
= elfNN_ia64_link_hash_table_free
;
1478 return &ret
->root
.root
;
1481 /* Traverse both local and global hash tables. */
1483 struct elfNN_ia64_dyn_sym_traverse_data
1485 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *);
1490 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry
*xentry
,
1493 struct elfNN_ia64_link_hash_entry
*entry
1494 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1495 struct elfNN_ia64_dyn_sym_traverse_data
*data
1496 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1497 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1500 for (count
= entry
->count
, dyn_i
= entry
->info
;
1503 if (! (*data
->func
) (dyn_i
, data
->data
))
1509 elfNN_ia64_local_dyn_sym_thunk (void **slot
, void * xdata
)
1511 struct elfNN_ia64_local_hash_entry
*entry
1512 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1513 struct elfNN_ia64_dyn_sym_traverse_data
*data
1514 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1515 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1518 for (count
= entry
->count
, dyn_i
= entry
->info
;
1521 if (! (*data
->func
) (dyn_i
, data
->data
))
1527 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table
*ia64_info
,
1528 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
1531 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
1536 elf_link_hash_traverse (&ia64_info
->root
,
1537 elfNN_ia64_global_dyn_sym_thunk
, &xdata
);
1538 htab_traverse (ia64_info
->loc_hash_table
,
1539 elfNN_ia64_local_dyn_sym_thunk
, &xdata
);
1543 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1544 struct bfd_link_info
*info
)
1546 struct elfNN_ia64_link_hash_table
*ia64_info
;
1549 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1552 ia64_info
= elfNN_ia64_hash_table (info
);
1553 if (ia64_info
== NULL
)
1557 flagword flags
= bfd_section_flags (ia64_info
->root
.sgot
);
1558 bfd_set_section_flags (ia64_info
->root
.sgot
, SEC_SMALL_DATA
| flags
);
1559 /* The .got section is always aligned at 8 bytes. */
1560 if (!bfd_set_section_alignment (ia64_info
->root
.sgot
, 3))
1564 if (!get_pltoff (abfd
, info
, ia64_info
))
1567 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1568 (SEC_ALLOC
| SEC_LOAD
1571 | SEC_LINKER_CREATED
1574 || !bfd_set_section_alignment (s
, LOG_SECTION_ALIGN
))
1576 ia64_info
->rel_pltoff_sec
= s
;
1581 /* Find and/or create a hash entry for local symbol. */
1582 static struct elfNN_ia64_local_hash_entry
*
1583 get_local_sym_hash (struct elfNN_ia64_link_hash_table
*ia64_info
,
1584 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
1587 struct elfNN_ia64_local_hash_entry e
, *ret
;
1588 asection
*sec
= abfd
->sections
;
1589 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
1590 ELFNN_R_SYM (rel
->r_info
));
1594 e
.r_sym
= ELFNN_R_SYM (rel
->r_info
);
1595 slot
= htab_find_slot_with_hash (ia64_info
->loc_hash_table
, &e
, h
,
1596 create
? INSERT
: NO_INSERT
);
1602 return (struct elfNN_ia64_local_hash_entry
*) *slot
;
1604 ret
= (struct elfNN_ia64_local_hash_entry
*)
1605 objalloc_alloc ((struct objalloc
*) ia64_info
->loc_hash_memory
,
1606 sizeof (struct elfNN_ia64_local_hash_entry
));
1609 memset (ret
, 0, sizeof (*ret
));
1611 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1617 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1620 addend_compare (const void *xp
, const void *yp
)
1622 const struct elfNN_ia64_dyn_sym_info
*x
1623 = (const struct elfNN_ia64_dyn_sym_info
*) xp
;
1624 const struct elfNN_ia64_dyn_sym_info
*y
1625 = (const struct elfNN_ia64_dyn_sym_info
*) yp
;
1627 return x
->addend
< y
->addend
? -1 : x
->addend
> y
->addend
? 1 : 0;
1630 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1633 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
1636 bfd_vma curr
, prev
, got_offset
;
1637 unsigned int i
, kept
, dupes
, diff
, dest
, src
, len
;
1639 qsort (info
, count
, sizeof (*info
), addend_compare
);
1641 /* Find the first duplicate. */
1642 prev
= info
[0].addend
;
1643 got_offset
= info
[0].got_offset
;
1644 for (i
= 1; i
< count
; i
++)
1646 curr
= info
[i
].addend
;
1649 /* For duplicates, make sure that GOT_OFFSET is valid. */
1650 if (got_offset
== (bfd_vma
) -1)
1651 got_offset
= info
[i
].got_offset
;
1654 got_offset
= info
[i
].got_offset
;
1658 /* We may move a block of elements to here. */
1661 /* Remove duplicates. */
1666 /* For duplicates, make sure that the kept one has a valid
1669 if (got_offset
!= (bfd_vma
) -1)
1670 info
[kept
].got_offset
= got_offset
;
1672 curr
= info
[i
].addend
;
1673 got_offset
= info
[i
].got_offset
;
1675 /* Move a block of elements whose first one is different from
1679 for (src
= i
+ 1; src
< count
; src
++)
1681 if (info
[src
].addend
!= curr
)
1683 /* For duplicates, make sure that GOT_OFFSET is
1685 if (got_offset
== (bfd_vma
) -1)
1686 got_offset
= info
[src
].got_offset
;
1689 /* Make sure that the kept one has a valid got_offset. */
1690 if (got_offset
!= (bfd_vma
) -1)
1691 info
[kept
].got_offset
= got_offset
;
1699 /* Find the next duplicate. SRC will be kept. */
1700 prev
= info
[src
].addend
;
1701 got_offset
= info
[src
].got_offset
;
1702 for (dupes
= src
+ 1; dupes
< count
; dupes
++)
1704 curr
= info
[dupes
].addend
;
1707 /* Make sure that got_offset is valid. */
1708 if (got_offset
== (bfd_vma
) -1)
1709 got_offset
= info
[dupes
].got_offset
;
1711 /* For duplicates, make sure that the kept one has
1712 a valid got_offset. */
1713 if (got_offset
!= (bfd_vma
) -1)
1714 info
[dupes
- 1].got_offset
= got_offset
;
1717 got_offset
= info
[dupes
].got_offset
;
1721 /* How much to move. */
1725 if (len
== 1 && dupes
< count
)
1727 /* If we only move 1 element, we combine it with the next
1728 one. There must be at least a duplicate. Find the
1729 next different one. */
1730 for (diff
= dupes
+ 1, src
++; diff
< count
; diff
++, src
++)
1732 if (info
[diff
].addend
!= curr
)
1734 /* Make sure that got_offset is valid. */
1735 if (got_offset
== (bfd_vma
) -1)
1736 got_offset
= info
[diff
].got_offset
;
1739 /* Makre sure that the last duplicated one has an valid
1741 BFD_ASSERT (curr
== prev
);
1742 if (got_offset
!= (bfd_vma
) -1)
1743 info
[diff
- 1].got_offset
= got_offset
;
1747 /* Find the next duplicate. Track the current valid
1749 prev
= info
[diff
].addend
;
1750 got_offset
= info
[diff
].got_offset
;
1751 for (dupes
= diff
+ 1; dupes
< count
; dupes
++)
1753 curr
= info
[dupes
].addend
;
1756 /* For duplicates, make sure that GOT_OFFSET
1758 if (got_offset
== (bfd_vma
) -1)
1759 got_offset
= info
[dupes
].got_offset
;
1762 got_offset
= info
[dupes
].got_offset
;
1767 len
= diff
- src
+ 1;
1772 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1781 /* When we get here, either there is no duplicate at all or
1782 the only duplicate is the last element. */
1785 /* If the last element is a duplicate, make sure that the
1786 kept one has a valid got_offset. We also update count. */
1787 if (got_offset
!= (bfd_vma
) -1)
1788 info
[dest
- 1].got_offset
= got_offset
;
1796 /* Find and/or create a descriptor for dynamic symbol info. This will
1797 vary based on global or local symbol, and the addend to the reloc.
1799 We don't sort when inserting. Also, we sort and eliminate
1800 duplicates if there is an unsorted section. Typically, this will
1801 only happen once, because we do all insertions before lookups. We
1802 then use bsearch to do a lookup. This also allows lookups to be
1803 fast. So we have fast insertion (O(log N) due to duplicate check),
1804 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1805 Previously, all lookups were O(N) because of the use of the linked
1806 list and also all insertions were O(N) because of the check for
1807 duplicates. There are some complications here because the array
1808 size grows occasionally, which may add an O(N) factor, but this
1809 should be rare. Also, we free the excess array allocation, which
1810 requires a copy which is O(N), but this only happens once. */
1812 static struct elfNN_ia64_dyn_sym_info
*
1813 get_dyn_sym_info (struct elfNN_ia64_link_hash_table
*ia64_info
,
1814 struct elf_link_hash_entry
*h
, bfd
*abfd
,
1815 const Elf_Internal_Rela
*rel
, bfd_boolean create
)
1817 struct elfNN_ia64_dyn_sym_info
**info_p
, *info
, *dyn_i
, key
;
1818 unsigned int *count_p
, *sorted_count_p
, *size_p
;
1819 unsigned int count
, sorted_count
, size
;
1820 bfd_vma addend
= rel
? rel
->r_addend
: 0;
1825 struct elfNN_ia64_link_hash_entry
*global_h
;
1827 global_h
= (struct elfNN_ia64_link_hash_entry
*) h
;
1828 info_p
= &global_h
->info
;
1829 count_p
= &global_h
->count
;
1830 sorted_count_p
= &global_h
->sorted_count
;
1831 size_p
= &global_h
->size
;
1835 struct elfNN_ia64_local_hash_entry
*loc_h
;
1837 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1840 BFD_ASSERT (!create
);
1844 info_p
= &loc_h
->info
;
1845 count_p
= &loc_h
->count
;
1846 sorted_count_p
= &loc_h
->sorted_count
;
1847 size_p
= &loc_h
->size
;
1851 sorted_count
= *sorted_count_p
;
1856 /* When we create the array, we don't check for duplicates,
1857 except in the previously sorted section if one exists, and
1858 against the last inserted entry. This allows insertions to
1864 /* Try bsearch first on the sorted section. */
1865 key
.addend
= addend
;
1866 dyn_i
= bsearch (&key
, info
, sorted_count
,
1867 sizeof (*info
), addend_compare
);
1875 /* Do a quick check for the last inserted entry. */
1876 dyn_i
= info
+ count
- 1;
1877 if (dyn_i
->addend
== addend
)
1885 /* It is the very first element. We create the array of size
1888 amt
= size
* sizeof (*info
);
1889 info
= bfd_malloc (amt
);
1891 else if (size
<= count
)
1893 /* We double the array size every time when we reach the
1896 amt
= size
* sizeof (*info
);
1897 info
= bfd_realloc (info
, amt
);
1908 /* Append the new one to the array. */
1909 dyn_i
= info
+ count
;
1910 memset (dyn_i
, 0, sizeof (*dyn_i
));
1911 dyn_i
->got_offset
= (bfd_vma
) -1;
1912 dyn_i
->addend
= addend
;
1914 /* We increment count only since the new ones are unsorted and
1915 may have duplicate. */
1920 /* It is a lookup without insertion. Sort array if part of the
1921 array isn't sorted. */
1922 if (count
!= sorted_count
)
1924 count
= sort_dyn_sym_info (info
, count
);
1926 *sorted_count_p
= count
;
1929 /* Free unused memory. */
1932 amt
= count
* sizeof (*info
);
1933 info
= bfd_malloc (amt
);
1936 memcpy (info
, *info_p
, amt
);
1943 key
.addend
= addend
;
1944 dyn_i
= bsearch (&key
, info
, count
,
1945 sizeof (*info
), addend_compare
);
1952 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1953 struct elfNN_ia64_link_hash_table
*ia64_info
)
1958 got
= ia64_info
->root
.sgot
;
1963 dynobj
= ia64_info
->root
.dynobj
;
1965 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1966 if (!_bfd_elf_create_got_section (dynobj
, info
))
1969 got
= ia64_info
->root
.sgot
;
1971 /* The .got section is always aligned at 8 bytes. */
1972 if (!bfd_set_section_alignment (got
, 3))
1975 flags
= bfd_section_flags (got
);
1976 if (!bfd_set_section_flags (got
, SEC_SMALL_DATA
| flags
))
1983 /* Create function descriptor section (.opd). This section is called .opd
1984 because it contains "official procedure descriptors". The "official"
1985 refers to the fact that these descriptors are used when taking the address
1986 of a procedure, thus ensuring a unique address for each procedure. */
1989 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1990 struct elfNN_ia64_link_hash_table
*ia64_info
)
1995 fptr
= ia64_info
->fptr_sec
;
1998 dynobj
= ia64_info
->root
.dynobj
;
2000 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2002 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
2007 | (bfd_link_pie (info
)
2009 | SEC_LINKER_CREATED
));
2011 || !bfd_set_section_alignment (fptr
, 4))
2017 ia64_info
->fptr_sec
= fptr
;
2019 if (bfd_link_pie (info
))
2022 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2023 (SEC_ALLOC
| SEC_LOAD
2026 | SEC_LINKER_CREATED
2028 if (fptr_rel
== NULL
2029 || !bfd_set_section_alignment (fptr_rel
, LOG_SECTION_ALIGN
))
2035 ia64_info
->rel_fptr_sec
= fptr_rel
;
2043 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2044 struct elfNN_ia64_link_hash_table
*ia64_info
)
2049 pltoff
= ia64_info
->pltoff_sec
;
2052 dynobj
= ia64_info
->root
.dynobj
;
2054 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2056 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2057 ELF_STRING_ia64_pltoff
,
2063 | SEC_LINKER_CREATED
));
2065 || !bfd_set_section_alignment (pltoff
, 4))
2071 ia64_info
->pltoff_sec
= pltoff
;
2078 get_reloc_section (bfd
*abfd
,
2079 struct elfNN_ia64_link_hash_table
*ia64_info
,
2080 asection
*sec
, bfd_boolean create
)
2082 const char *srel_name
;
2086 srel_name
= (bfd_elf_string_from_elf_section
2087 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
2088 _bfd_elf_single_rel_hdr (sec
)->sh_name
));
2089 if (srel_name
== NULL
)
2092 dynobj
= ia64_info
->root
.dynobj
;
2094 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2096 srel
= bfd_get_linker_section (dynobj
, srel_name
);
2097 if (srel
== NULL
&& create
)
2099 srel
= bfd_make_section_anyway_with_flags (dynobj
, srel_name
,
2100 (SEC_ALLOC
| SEC_LOAD
2103 | SEC_LINKER_CREATED
2106 || !bfd_set_section_alignment (srel
, LOG_SECTION_ALIGN
))
2114 count_dyn_reloc (bfd
*abfd
, struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2115 asection
*srel
, int type
, bfd_boolean reltext
)
2117 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2119 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2120 if (rent
->srel
== srel
&& rent
->type
== type
)
2125 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2126 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2130 rent
->next
= dyn_i
->reloc_entries
;
2134 dyn_i
->reloc_entries
= rent
;
2136 rent
->reltext
= reltext
;
2143 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2145 const Elf_Internal_Rela
*relocs
)
2147 struct elfNN_ia64_link_hash_table
*ia64_info
;
2148 const Elf_Internal_Rela
*relend
;
2149 Elf_Internal_Shdr
*symtab_hdr
;
2150 const Elf_Internal_Rela
*rel
;
2151 asection
*got
, *fptr
, *srel
, *pltoff
;
2160 NEED_LTOFF_FPTR
= 128,
2166 struct elf_link_hash_entry
*h
;
2167 unsigned long r_symndx
;
2168 bfd_boolean maybe_dynamic
;
2170 if (bfd_link_relocatable (info
))
2173 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2174 ia64_info
= elfNN_ia64_hash_table (info
);
2175 if (ia64_info
== NULL
)
2178 got
= fptr
= srel
= pltoff
= NULL
;
2180 relend
= relocs
+ sec
->reloc_count
;
2182 /* We scan relocations first to create dynamic relocation arrays. We
2183 modified get_dyn_sym_info to allow fast insertion and support fast
2184 lookup in the next loop. */
2185 for (rel
= relocs
; rel
< relend
; ++rel
)
2187 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2188 if (r_symndx
>= symtab_hdr
->sh_info
)
2190 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2191 h
= elf_sym_hashes (abfd
)[indx
];
2192 while (h
->root
.type
== bfd_link_hash_indirect
2193 || h
->root
.type
== bfd_link_hash_warning
)
2194 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2199 if (h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2202 /* We can only get preliminary data on whether a symbol is
2203 locally or externally defined, as not all of the input files
2204 have yet been processed. Do something with what we know, as
2205 this may help reduce memory usage and processing time later. */
2206 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2207 && (!SYMBOLIC_BIND (info
, h
)
2208 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2210 || h
->root
.type
== bfd_link_hash_defweak
));
2213 switch (ELFNN_R_TYPE (rel
->r_info
))
2215 case R_IA64_TPREL64MSB
:
2216 case R_IA64_TPREL64LSB
:
2217 if (bfd_link_pic (info
) || maybe_dynamic
)
2218 need_entry
= NEED_DYNREL
;
2221 case R_IA64_LTOFF_TPREL22
:
2222 need_entry
= NEED_TPREL
;
2223 if (bfd_link_pic (info
))
2224 info
->flags
|= DF_STATIC_TLS
;
2227 case R_IA64_DTPREL32MSB
:
2228 case R_IA64_DTPREL32LSB
:
2229 case R_IA64_DTPREL64MSB
:
2230 case R_IA64_DTPREL64LSB
:
2231 if (bfd_link_pic (info
) || maybe_dynamic
)
2232 need_entry
= NEED_DYNREL
;
2235 case R_IA64_LTOFF_DTPREL22
:
2236 need_entry
= NEED_DTPREL
;
2239 case R_IA64_DTPMOD64MSB
:
2240 case R_IA64_DTPMOD64LSB
:
2241 if (bfd_link_pic (info
) || maybe_dynamic
)
2242 need_entry
= NEED_DYNREL
;
2245 case R_IA64_LTOFF_DTPMOD22
:
2246 need_entry
= NEED_DTPMOD
;
2249 case R_IA64_LTOFF_FPTR22
:
2250 case R_IA64_LTOFF_FPTR64I
:
2251 case R_IA64_LTOFF_FPTR32MSB
:
2252 case R_IA64_LTOFF_FPTR32LSB
:
2253 case R_IA64_LTOFF_FPTR64MSB
:
2254 case R_IA64_LTOFF_FPTR64LSB
:
2255 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2258 case R_IA64_FPTR64I
:
2259 case R_IA64_FPTR32MSB
:
2260 case R_IA64_FPTR32LSB
:
2261 case R_IA64_FPTR64MSB
:
2262 case R_IA64_FPTR64LSB
:
2263 if (bfd_link_pic (info
) || h
)
2264 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2266 need_entry
= NEED_FPTR
;
2269 case R_IA64_LTOFF22
:
2270 case R_IA64_LTOFF64I
:
2271 need_entry
= NEED_GOT
;
2274 case R_IA64_LTOFF22X
:
2275 need_entry
= NEED_GOTX
;
2278 case R_IA64_PLTOFF22
:
2279 case R_IA64_PLTOFF64I
:
2280 case R_IA64_PLTOFF64MSB
:
2281 case R_IA64_PLTOFF64LSB
:
2282 need_entry
= NEED_PLTOFF
;
2286 need_entry
|= NEED_MIN_PLT
;
2290 (*info
->callbacks
->warning
)
2291 (info
, _("@pltoff reloc against local symbol"), 0,
2292 abfd
, 0, (bfd_vma
) 0);
2296 case R_IA64_PCREL21B
:
2297 case R_IA64_PCREL60B
:
2298 /* Depending on where this symbol is defined, we may or may not
2299 need a full plt entry. Only skip if we know we'll not need
2300 the entry -- static or symbolic, and the symbol definition
2301 has already been seen. */
2302 if (maybe_dynamic
&& rel
->r_addend
== 0)
2303 need_entry
= NEED_FULL_PLT
;
2309 case R_IA64_DIR32MSB
:
2310 case R_IA64_DIR32LSB
:
2311 case R_IA64_DIR64MSB
:
2312 case R_IA64_DIR64LSB
:
2313 /* Shared objects will always need at least a REL relocation. */
2314 if (bfd_link_pic (info
) || maybe_dynamic
)
2315 need_entry
= NEED_DYNREL
;
2318 case R_IA64_IPLTMSB
:
2319 case R_IA64_IPLTLSB
:
2320 /* Shared objects will always need at least a REL relocation. */
2321 if (bfd_link_pic (info
) || maybe_dynamic
)
2322 need_entry
= NEED_DYNREL
;
2325 case R_IA64_PCREL22
:
2326 case R_IA64_PCREL64I
:
2327 case R_IA64_PCREL32MSB
:
2328 case R_IA64_PCREL32LSB
:
2329 case R_IA64_PCREL64MSB
:
2330 case R_IA64_PCREL64LSB
:
2332 need_entry
= NEED_DYNREL
;
2339 if ((need_entry
& NEED_FPTR
) != 0
2342 (*info
->callbacks
->warning
)
2343 (info
, _("non-zero addend in @fptr reloc"), 0,
2344 abfd
, 0, (bfd_vma
) 0);
2347 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, TRUE
) == NULL
)
2351 /* Now, we only do lookup without insertion, which is very fast
2352 with the modified get_dyn_sym_info. */
2353 for (rel
= relocs
; rel
< relend
; ++rel
)
2355 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2356 int dynrel_type
= R_IA64_NONE
;
2358 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2359 if (r_symndx
>= symtab_hdr
->sh_info
)
2361 /* We're dealing with a global symbol -- find its hash entry
2362 and mark it as being referenced. */
2363 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2364 h
= elf_sym_hashes (abfd
)[indx
];
2365 while (h
->root
.type
== bfd_link_hash_indirect
2366 || h
->root
.type
== bfd_link_hash_warning
)
2367 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2369 /* PR15323, ref flags aren't set for references in the same
2376 if (h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2379 /* We can only get preliminary data on whether a symbol is
2380 locally or externally defined, as not all of the input files
2381 have yet been processed. Do something with what we know, as
2382 this may help reduce memory usage and processing time later. */
2383 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2384 && (!SYMBOLIC_BIND (info
, h
)
2385 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2387 || h
->root
.type
== bfd_link_hash_defweak
));
2390 switch (ELFNN_R_TYPE (rel
->r_info
))
2392 case R_IA64_TPREL64MSB
:
2393 case R_IA64_TPREL64LSB
:
2394 if (bfd_link_pic (info
) || maybe_dynamic
)
2395 need_entry
= NEED_DYNREL
;
2396 dynrel_type
= R_IA64_TPREL64LSB
;
2397 if (bfd_link_pic (info
))
2398 info
->flags
|= DF_STATIC_TLS
;
2401 case R_IA64_LTOFF_TPREL22
:
2402 need_entry
= NEED_TPREL
;
2403 if (bfd_link_pic (info
))
2404 info
->flags
|= DF_STATIC_TLS
;
2407 case R_IA64_DTPREL32MSB
:
2408 case R_IA64_DTPREL32LSB
:
2409 case R_IA64_DTPREL64MSB
:
2410 case R_IA64_DTPREL64LSB
:
2411 if (bfd_link_pic (info
) || maybe_dynamic
)
2412 need_entry
= NEED_DYNREL
;
2413 dynrel_type
= R_IA64_DTPRELNNLSB
;
2416 case R_IA64_LTOFF_DTPREL22
:
2417 need_entry
= NEED_DTPREL
;
2420 case R_IA64_DTPMOD64MSB
:
2421 case R_IA64_DTPMOD64LSB
:
2422 if (bfd_link_pic (info
) || maybe_dynamic
)
2423 need_entry
= NEED_DYNREL
;
2424 dynrel_type
= R_IA64_DTPMOD64LSB
;
2427 case R_IA64_LTOFF_DTPMOD22
:
2428 need_entry
= NEED_DTPMOD
;
2431 case R_IA64_LTOFF_FPTR22
:
2432 case R_IA64_LTOFF_FPTR64I
:
2433 case R_IA64_LTOFF_FPTR32MSB
:
2434 case R_IA64_LTOFF_FPTR32LSB
:
2435 case R_IA64_LTOFF_FPTR64MSB
:
2436 case R_IA64_LTOFF_FPTR64LSB
:
2437 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2440 case R_IA64_FPTR64I
:
2441 case R_IA64_FPTR32MSB
:
2442 case R_IA64_FPTR32LSB
:
2443 case R_IA64_FPTR64MSB
:
2444 case R_IA64_FPTR64LSB
:
2445 if (bfd_link_pic (info
) || h
)
2446 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2448 need_entry
= NEED_FPTR
;
2449 dynrel_type
= R_IA64_FPTRNNLSB
;
2452 case R_IA64_LTOFF22
:
2453 case R_IA64_LTOFF64I
:
2454 need_entry
= NEED_GOT
;
2457 case R_IA64_LTOFF22X
:
2458 need_entry
= NEED_GOTX
;
2461 case R_IA64_PLTOFF22
:
2462 case R_IA64_PLTOFF64I
:
2463 case R_IA64_PLTOFF64MSB
:
2464 case R_IA64_PLTOFF64LSB
:
2465 need_entry
= NEED_PLTOFF
;
2469 need_entry
|= NEED_MIN_PLT
;
2473 case R_IA64_PCREL21B
:
2474 case R_IA64_PCREL60B
:
2475 /* Depending on where this symbol is defined, we may or may not
2476 need a full plt entry. Only skip if we know we'll not need
2477 the entry -- static or symbolic, and the symbol definition
2478 has already been seen. */
2479 if (maybe_dynamic
&& rel
->r_addend
== 0)
2480 need_entry
= NEED_FULL_PLT
;
2486 case R_IA64_DIR32MSB
:
2487 case R_IA64_DIR32LSB
:
2488 case R_IA64_DIR64MSB
:
2489 case R_IA64_DIR64LSB
:
2490 /* Shared objects will always need at least a REL relocation. */
2491 if (bfd_link_pic (info
) || maybe_dynamic
)
2492 need_entry
= NEED_DYNREL
;
2493 dynrel_type
= R_IA64_DIRNNLSB
;
2496 case R_IA64_IPLTMSB
:
2497 case R_IA64_IPLTLSB
:
2498 /* Shared objects will always need at least a REL relocation. */
2499 if (bfd_link_pic (info
) || maybe_dynamic
)
2500 need_entry
= NEED_DYNREL
;
2501 dynrel_type
= R_IA64_IPLTLSB
;
2504 case R_IA64_PCREL22
:
2505 case R_IA64_PCREL64I
:
2506 case R_IA64_PCREL32MSB
:
2507 case R_IA64_PCREL32LSB
:
2508 case R_IA64_PCREL64MSB
:
2509 case R_IA64_PCREL64LSB
:
2511 need_entry
= NEED_DYNREL
;
2512 dynrel_type
= R_IA64_PCRELNNLSB
;
2519 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, FALSE
);
2521 /* Record whether or not this is a local symbol. */
2524 /* Create what's needed. */
2525 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2526 | NEED_DTPMOD
| NEED_DTPREL
))
2530 got
= get_got (abfd
, info
, ia64_info
);
2534 if (need_entry
& NEED_GOT
)
2535 dyn_i
->want_got
= 1;
2536 if (need_entry
& NEED_GOTX
)
2537 dyn_i
->want_gotx
= 1;
2538 if (need_entry
& NEED_TPREL
)
2539 dyn_i
->want_tprel
= 1;
2540 if (need_entry
& NEED_DTPMOD
)
2541 dyn_i
->want_dtpmod
= 1;
2542 if (need_entry
& NEED_DTPREL
)
2543 dyn_i
->want_dtprel
= 1;
2545 if (need_entry
& NEED_FPTR
)
2549 fptr
= get_fptr (abfd
, info
, ia64_info
);
2554 /* FPTRs for shared libraries are allocated by the dynamic
2555 linker. Make sure this local symbol will appear in the
2556 dynamic symbol table. */
2557 if (!h
&& bfd_link_pic (info
))
2559 if (! (bfd_elf_link_record_local_dynamic_symbol
2560 (info
, abfd
, (long) r_symndx
)))
2564 dyn_i
->want_fptr
= 1;
2566 if (need_entry
& NEED_LTOFF_FPTR
)
2567 dyn_i
->want_ltoff_fptr
= 1;
2568 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2570 if (!ia64_info
->root
.dynobj
)
2571 ia64_info
->root
.dynobj
= abfd
;
2573 dyn_i
->want_plt
= 1;
2575 if (need_entry
& NEED_FULL_PLT
)
2576 dyn_i
->want_plt2
= 1;
2577 if (need_entry
& NEED_PLTOFF
)
2579 /* This is needed here, in case @pltoff is used in a non-shared
2583 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2588 dyn_i
->want_pltoff
= 1;
2590 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2594 srel
= get_reloc_section (abfd
, ia64_info
, sec
, TRUE
);
2598 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2599 (sec
->flags
& SEC_READONLY
) != 0))
2607 /* For cleanliness, and potentially faster dynamic loading, allocate
2608 external GOT entries first. */
2611 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2614 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2616 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2617 && ! dyn_i
->want_fptr
2618 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2620 dyn_i
->got_offset
= x
->ofs
;
2623 if (dyn_i
->want_tprel
)
2625 dyn_i
->tprel_offset
= x
->ofs
;
2628 if (dyn_i
->want_dtpmod
)
2630 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2632 dyn_i
->dtpmod_offset
= x
->ofs
;
2637 struct elfNN_ia64_link_hash_table
*ia64_info
;
2639 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2640 if (ia64_info
== NULL
)
2643 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2645 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2648 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2651 if (dyn_i
->want_dtprel
)
2653 dyn_i
->dtprel_offset
= x
->ofs
;
2659 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2662 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2665 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2669 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2671 dyn_i
->got_offset
= x
->ofs
;
2677 /* Lastly, allocate all the GOT entries for local data. */
2680 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2683 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2685 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2686 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2688 dyn_i
->got_offset
= x
->ofs
;
2694 /* Search for the index of a global symbol in it's defining object file. */
2697 global_sym_index (struct elf_link_hash_entry
*h
)
2699 struct elf_link_hash_entry
**p
;
2702 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2703 || h
->root
.type
== bfd_link_hash_defweak
);
2705 obj
= h
->root
.u
.def
.section
->owner
;
2706 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2709 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2712 /* Allocate function descriptors. We can do these for every function
2713 in a main executable that is not exported. */
2716 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2718 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2720 if (dyn_i
->want_fptr
)
2722 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2725 while (h
->root
.type
== bfd_link_hash_indirect
2726 || h
->root
.type
== bfd_link_hash_warning
)
2727 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2729 if (!bfd_link_executable (x
->info
)
2731 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2732 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x
->info
, h
))
2733 || (h
->root
.type
!= bfd_link_hash_undefweak
2734 && h
->root
.type
!= bfd_link_hash_undefined
)))
2736 if (h
&& h
->dynindx
== -1)
2738 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2739 || (h
->root
.type
== bfd_link_hash_defweak
));
2741 if (!bfd_elf_link_record_local_dynamic_symbol
2742 (x
->info
, h
->root
.u
.def
.section
->owner
,
2743 global_sym_index (h
)))
2747 dyn_i
->want_fptr
= 0;
2749 else if (h
== NULL
|| h
->dynindx
== -1)
2751 dyn_i
->fptr_offset
= x
->ofs
;
2755 dyn_i
->want_fptr
= 0;
2760 /* Allocate all the minimal PLT entries. */
2763 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2766 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2768 if (dyn_i
->want_plt
)
2770 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2773 while (h
->root
.type
== bfd_link_hash_indirect
2774 || h
->root
.type
== bfd_link_hash_warning
)
2775 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2777 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2778 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2780 bfd_size_type offset
= x
->ofs
;
2782 offset
= PLT_HEADER_SIZE
;
2783 dyn_i
->plt_offset
= offset
;
2784 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2786 dyn_i
->want_pltoff
= 1;
2790 dyn_i
->want_plt
= 0;
2791 dyn_i
->want_plt2
= 0;
2797 /* Allocate all the full PLT entries. */
2800 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2803 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2805 if (dyn_i
->want_plt2
)
2807 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2808 bfd_size_type ofs
= x
->ofs
;
2810 dyn_i
->plt2_offset
= ofs
;
2811 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2813 while (h
->root
.type
== bfd_link_hash_indirect
2814 || h
->root
.type
== bfd_link_hash_warning
)
2815 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2816 dyn_i
->h
->plt
.offset
= ofs
;
2821 /* Allocate all the PLTOFF entries requested by relocations and
2822 plt entries. We can't share space with allocated FPTR entries,
2823 because the latter are not necessarily addressable by the GP.
2824 ??? Relaxation might be able to determine that they are. */
2827 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2830 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2832 if (dyn_i
->want_pltoff
)
2834 dyn_i
->pltoff_offset
= x
->ofs
;
2840 /* Allocate dynamic relocations for those symbols that turned out
2844 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2847 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2848 struct elfNN_ia64_link_hash_table
*ia64_info
;
2849 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2850 bfd_boolean dynamic_symbol
, shared
, resolved_zero
;
2852 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2853 if (ia64_info
== NULL
)
2856 /* Note that this can't be used in relation to FPTR relocs below. */
2857 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2859 shared
= bfd_link_pic (x
->info
);
2860 resolved_zero
= (dyn_i
->h
2861 && UNDEFWEAK_NO_DYNAMIC_RELOC (x
->info
,
2864 /* Take care of the GOT and PLT relocations. */
2867 && (dynamic_symbol
|| shared
)
2868 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2869 || (dyn_i
->want_ltoff_fptr
2871 && dyn_i
->h
->dynindx
!= -1))
2873 if (!dyn_i
->want_ltoff_fptr
2874 || !bfd_link_pie (x
->info
)
2876 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2877 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2879 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2880 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2881 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2882 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2883 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2884 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2889 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2891 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2892 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2895 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2897 bfd_size_type t
= 0;
2899 /* Dynamic symbols get one IPLT relocation. Local symbols in
2900 shared libraries get two REL relocations. Local symbols in
2901 main applications get nothing. */
2903 t
= sizeof (ElfNN_External_Rela
);
2905 t
= 2 * sizeof (ElfNN_External_Rela
);
2907 ia64_info
->rel_pltoff_sec
->size
+= t
;
2910 /* Take care of the normal data relocations. */
2912 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2914 int count
= rent
->count
;
2918 case R_IA64_FPTR32LSB
:
2919 case R_IA64_FPTR64LSB
:
2920 /* Allocate one iff !want_fptr and not PIE, which by this point
2921 will be true only if we're actually allocating one statically
2922 in the main executable. Position independent executables
2923 need a relative reloc. */
2924 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2927 case R_IA64_PCREL32LSB
:
2928 case R_IA64_PCREL64LSB
:
2929 if (!dynamic_symbol
)
2932 case R_IA64_DIR32LSB
:
2933 case R_IA64_DIR64LSB
:
2934 if (!dynamic_symbol
&& !shared
)
2937 case R_IA64_IPLTLSB
:
2938 if (!dynamic_symbol
&& !shared
)
2940 /* Use two REL relocations for IPLT relocations
2941 against local symbols. */
2942 if (!dynamic_symbol
)
2945 case R_IA64_DTPREL32LSB
:
2946 case R_IA64_TPREL64LSB
:
2947 case R_IA64_DTPREL64LSB
:
2948 case R_IA64_DTPMOD64LSB
:
2954 ia64_info
->reltext
= 1;
2955 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2962 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2963 struct elf_link_hash_entry
*h
)
2965 /* ??? Undefined symbols with PLT entries should be re-defined
2966 to be the PLT entry. */
2968 /* If this is a weak symbol, and there is a real definition, the
2969 processor independent code will have arranged for us to see the
2970 real definition first, and we can just use the same value. */
2971 if (h
->is_weakalias
)
2973 struct elf_link_hash_entry
*def
= weakdef (h
);
2974 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2975 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2976 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2980 /* If this is a reference to a symbol defined by a dynamic object which
2981 is not a function, we might allocate the symbol in our .dynbss section
2982 and allocate a COPY dynamic relocation.
2984 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2991 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2992 struct bfd_link_info
*info
)
2994 struct elfNN_ia64_allocate_data data
;
2995 struct elfNN_ia64_link_hash_table
*ia64_info
;
2998 bfd_boolean relplt
= FALSE
;
3000 ia64_info
= elfNN_ia64_hash_table (info
);
3001 if (ia64_info
== NULL
)
3003 dynobj
= ia64_info
->root
.dynobj
;
3004 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
3005 BFD_ASSERT(dynobj
!= NULL
);
3008 /* Set the contents of the .interp section to the interpreter. */
3009 if (ia64_info
->root
.dynamic_sections_created
3010 && bfd_link_executable (info
) && !info
->nointerp
)
3012 sec
= bfd_get_linker_section (dynobj
, ".interp");
3013 BFD_ASSERT (sec
!= NULL
);
3014 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3015 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3018 /* Allocate the GOT entries. */
3020 if (ia64_info
->root
.sgot
)
3023 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3024 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3025 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3026 ia64_info
->root
.sgot
->size
= data
.ofs
;
3029 /* Allocate the FPTR entries. */
3031 if (ia64_info
->fptr_sec
)
3034 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3035 ia64_info
->fptr_sec
->size
= data
.ofs
;
3038 /* Now that we've seen all of the input files, we can decide which
3039 symbols need plt entries. Allocate the minimal PLT entries first.
3040 We do this even though dynamic_sections_created may be FALSE, because
3041 this has the side-effect of clearing want_plt and want_plt2. */
3044 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3046 ia64_info
->minplt_entries
= 0;
3049 ia64_info
->minplt_entries
3050 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3053 /* Align the pointer for the plt2 entries. */
3054 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3056 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3057 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3059 /* FIXME: we always reserve the memory for dynamic linker even if
3060 there are no PLT entries since dynamic linker may assume the
3061 reserved memory always exists. */
3063 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3065 ia64_info
->root
.splt
->size
= data
.ofs
;
3067 /* If we've got a .plt, we need some extra memory for the dynamic
3068 linker. We stuff these in .got.plt. */
3069 ia64_info
->root
.sgotplt
->size
= 8 * PLT_RESERVED_WORDS
;
3072 /* Allocate the PLTOFF entries. */
3074 if (ia64_info
->pltoff_sec
)
3077 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_pltoff_entries
, &data
);
3078 ia64_info
->pltoff_sec
->size
= data
.ofs
;
3081 if (ia64_info
->root
.dynamic_sections_created
)
3083 /* Allocate space for the dynamic relocations that turned out to be
3086 if (bfd_link_pic (info
) && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
3087 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
3088 data
.only_got
= FALSE
;
3089 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
, &data
);
3092 /* We have now determined the sizes of the various dynamic sections.
3093 Allocate memory for them. */
3094 for (sec
= dynobj
->sections
; sec
!= NULL
; sec
= sec
->next
)
3098 if (!(sec
->flags
& SEC_LINKER_CREATED
))
3101 /* If we don't need this section, strip it from the output file.
3102 There were several sections primarily related to dynamic
3103 linking that must be create before the linker maps input
3104 sections to output sections. The linker does that before
3105 bfd_elf_size_dynamic_sections is called, and it is that
3106 function which decides whether anything needs to go into
3109 strip
= (sec
->size
== 0);
3111 if (sec
== ia64_info
->root
.sgot
)
3113 else if (sec
== ia64_info
->root
.srelgot
)
3116 ia64_info
->root
.srelgot
= NULL
;
3118 /* We use the reloc_count field as a counter if we need to
3119 copy relocs into the output file. */
3120 sec
->reloc_count
= 0;
3122 else if (sec
== ia64_info
->fptr_sec
)
3125 ia64_info
->fptr_sec
= NULL
;
3127 else if (sec
== ia64_info
->rel_fptr_sec
)
3130 ia64_info
->rel_fptr_sec
= NULL
;
3132 /* We use the reloc_count field as a counter if we need to
3133 copy relocs into the output file. */
3134 sec
->reloc_count
= 0;
3136 else if (sec
== ia64_info
->root
.splt
)
3139 ia64_info
->root
.splt
= NULL
;
3141 else if (sec
== ia64_info
->pltoff_sec
)
3144 ia64_info
->pltoff_sec
= NULL
;
3146 else if (sec
== ia64_info
->rel_pltoff_sec
)
3149 ia64_info
->rel_pltoff_sec
= NULL
;
3153 /* We use the reloc_count field as a counter if we need to
3154 copy relocs into the output file. */
3155 sec
->reloc_count
= 0;
3162 /* It's OK to base decisions on the section name, because none
3163 of the dynobj section names depend upon the input files. */
3164 name
= bfd_section_name (sec
);
3166 if (strcmp (name
, ".got.plt") == 0)
3168 else if (CONST_STRNEQ (name
, ".rel"))
3172 /* We use the reloc_count field as a counter if we need to
3173 copy relocs into the output file. */
3174 sec
->reloc_count
= 0;
3182 sec
->flags
|= SEC_EXCLUDE
;
3185 /* Allocate memory for the section contents. */
3186 sec
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, sec
->size
);
3187 if (sec
->contents
== NULL
&& sec
->size
!= 0)
3192 if (ia64_info
->root
.dynamic_sections_created
)
3194 /* Add some entries to the .dynamic section. We fill in the values
3195 later (in finish_dynamic_sections) but we must add the entries now
3196 so that we get the correct size for the .dynamic section. */
3198 if (bfd_link_executable (info
))
3200 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3202 #define add_dynamic_entry(TAG, VAL) \
3203 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3205 if (!add_dynamic_entry (DT_DEBUG
, 0))
3209 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE
, 0))
3211 if (!add_dynamic_entry (DT_PLTGOT
, 0))
3216 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
3217 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3218 || !add_dynamic_entry (DT_JMPREL
, 0))
3222 if (!add_dynamic_entry (DT_RELA
, 0)
3223 || !add_dynamic_entry (DT_RELASZ
, 0)
3224 || !add_dynamic_entry (DT_RELAENT
, sizeof (ElfNN_External_Rela
)))
3227 if (ia64_info
->reltext
)
3229 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3231 info
->flags
|= DF_TEXTREL
;
3235 /* ??? Perhaps force __gp local. */
3241 elfNN_ia64_install_dyn_reloc (bfd
*abfd
, struct bfd_link_info
*info
,
3242 asection
*sec
, asection
*srel
,
3243 bfd_vma offset
, unsigned int type
,
3244 long dynindx
, bfd_vma addend
)
3246 Elf_Internal_Rela outrel
;
3249 BFD_ASSERT (dynindx
!= -1);
3250 outrel
.r_info
= ELFNN_R_INFO (dynindx
, type
);
3251 outrel
.r_addend
= addend
;
3252 outrel
.r_offset
= _bfd_elf_section_offset (abfd
, info
, sec
, offset
);
3253 if (outrel
.r_offset
>= (bfd_vma
) -2)
3255 /* Run for the hills. We shouldn't be outputting a relocation
3256 for this. So do what everyone else does and output a no-op. */
3257 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
3258 outrel
.r_addend
= 0;
3259 outrel
.r_offset
= 0;
3262 outrel
.r_offset
+= sec
->output_section
->vma
+ sec
->output_offset
;
3264 loc
= srel
->contents
;
3265 loc
+= srel
->reloc_count
++ * sizeof (ElfNN_External_Rela
);
3266 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3267 BFD_ASSERT (sizeof (ElfNN_External_Rela
) * srel
->reloc_count
<= srel
->size
);
3270 /* Store an entry for target address TARGET_ADDR in the linkage table
3271 and return the gp-relative address of the linkage table entry. */
3274 set_got_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3275 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3276 long dynindx
, bfd_vma addend
, bfd_vma value
,
3277 unsigned int dyn_r_type
)
3279 struct elfNN_ia64_link_hash_table
*ia64_info
;
3284 ia64_info
= elfNN_ia64_hash_table (info
);
3285 if (ia64_info
== NULL
)
3288 got_sec
= ia64_info
->root
.sgot
;
3292 case R_IA64_TPREL64LSB
:
3293 done
= dyn_i
->tprel_done
;
3294 dyn_i
->tprel_done
= TRUE
;
3295 got_offset
= dyn_i
->tprel_offset
;
3297 case R_IA64_DTPMOD64LSB
:
3298 if (dyn_i
->dtpmod_offset
!= ia64_info
->self_dtpmod_offset
)
3300 done
= dyn_i
->dtpmod_done
;
3301 dyn_i
->dtpmod_done
= TRUE
;
3305 done
= ia64_info
->self_dtpmod_done
;
3306 ia64_info
->self_dtpmod_done
= TRUE
;
3309 got_offset
= dyn_i
->dtpmod_offset
;
3311 case R_IA64_DTPREL32LSB
:
3312 case R_IA64_DTPREL64LSB
:
3313 done
= dyn_i
->dtprel_done
;
3314 dyn_i
->dtprel_done
= TRUE
;
3315 got_offset
= dyn_i
->dtprel_offset
;
3318 done
= dyn_i
->got_done
;
3319 dyn_i
->got_done
= TRUE
;
3320 got_offset
= dyn_i
->got_offset
;
3324 BFD_ASSERT ((got_offset
& 7) == 0);
3328 /* Store the target address in the linkage table entry. */
3329 bfd_put_64 (abfd
, value
, got_sec
->contents
+ got_offset
);
3331 /* Install a dynamic relocation if needed. */
3332 if (((bfd_link_pic (info
)
3334 || (ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3335 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, dyn_i
->h
))
3336 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
3337 && dyn_r_type
!= R_IA64_DTPREL32LSB
3338 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3339 || elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, info
, dyn_r_type
)
3341 && (dyn_r_type
== R_IA64_FPTR32LSB
3342 || dyn_r_type
== R_IA64_FPTR64LSB
)))
3343 && (!dyn_i
->want_ltoff_fptr
3344 || !bfd_link_pie (info
)
3346 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3349 && dyn_r_type
!= R_IA64_TPREL64LSB
3350 && dyn_r_type
!= R_IA64_DTPMOD64LSB
3351 && dyn_r_type
!= R_IA64_DTPREL32LSB
3352 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3354 dyn_r_type
= R_IA64_RELNNLSB
;
3359 if (bfd_big_endian (abfd
))
3363 case R_IA64_REL32LSB
:
3364 dyn_r_type
= R_IA64_REL32MSB
;
3366 case R_IA64_DIR32LSB
:
3367 dyn_r_type
= R_IA64_DIR32MSB
;
3369 case R_IA64_FPTR32LSB
:
3370 dyn_r_type
= R_IA64_FPTR32MSB
;
3372 case R_IA64_DTPREL32LSB
:
3373 dyn_r_type
= R_IA64_DTPREL32MSB
;
3375 case R_IA64_REL64LSB
:
3376 dyn_r_type
= R_IA64_REL64MSB
;
3378 case R_IA64_DIR64LSB
:
3379 dyn_r_type
= R_IA64_DIR64MSB
;
3381 case R_IA64_FPTR64LSB
:
3382 dyn_r_type
= R_IA64_FPTR64MSB
;
3384 case R_IA64_TPREL64LSB
:
3385 dyn_r_type
= R_IA64_TPREL64MSB
;
3387 case R_IA64_DTPMOD64LSB
:
3388 dyn_r_type
= R_IA64_DTPMOD64MSB
;
3390 case R_IA64_DTPREL64LSB
:
3391 dyn_r_type
= R_IA64_DTPREL64MSB
;
3399 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, got_sec
,
3400 ia64_info
->root
.srelgot
,
3401 got_offset
, dyn_r_type
,
3406 /* Return the address of the linkage table entry. */
3407 value
= (got_sec
->output_section
->vma
3408 + got_sec
->output_offset
3414 /* Fill in a function descriptor consisting of the function's code
3415 address and its global pointer. Return the descriptor's address. */
3418 set_fptr_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3419 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3422 struct elfNN_ia64_link_hash_table
*ia64_info
;
3425 ia64_info
= elfNN_ia64_hash_table (info
);
3426 if (ia64_info
== NULL
)
3429 fptr_sec
= ia64_info
->fptr_sec
;
3431 if (!dyn_i
->fptr_done
)
3433 dyn_i
->fptr_done
= 1;
3435 /* Fill in the function descriptor. */
3436 bfd_put_64 (abfd
, value
, fptr_sec
->contents
+ dyn_i
->fptr_offset
);
3437 bfd_put_64 (abfd
, _bfd_get_gp_value (abfd
),
3438 fptr_sec
->contents
+ dyn_i
->fptr_offset
+ 8);
3439 if (ia64_info
->rel_fptr_sec
)
3441 Elf_Internal_Rela outrel
;
3444 if (bfd_little_endian (abfd
))
3445 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTLSB
);
3447 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTMSB
);
3448 outrel
.r_addend
= value
;
3449 outrel
.r_offset
= (fptr_sec
->output_section
->vma
3450 + fptr_sec
->output_offset
3451 + dyn_i
->fptr_offset
);
3452 loc
= ia64_info
->rel_fptr_sec
->contents
;
3453 loc
+= ia64_info
->rel_fptr_sec
->reloc_count
++
3454 * sizeof (ElfNN_External_Rela
);
3455 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3459 /* Return the descriptor's address. */
3460 value
= (fptr_sec
->output_section
->vma
3461 + fptr_sec
->output_offset
3462 + dyn_i
->fptr_offset
);
3467 /* Fill in a PLTOFF entry consisting of the function's code address
3468 and its global pointer. Return the descriptor's address. */
3471 set_pltoff_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3472 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3473 bfd_vma value
, bfd_boolean is_plt
)
3475 struct elfNN_ia64_link_hash_table
*ia64_info
;
3476 asection
*pltoff_sec
;
3478 ia64_info
= elfNN_ia64_hash_table (info
);
3479 if (ia64_info
== NULL
)
3482 pltoff_sec
= ia64_info
->pltoff_sec
;
3484 /* Don't do anything if this symbol uses a real PLT entry. In
3485 that case, we'll fill this in during finish_dynamic_symbol. */
3486 if ((! dyn_i
->want_plt
|| is_plt
)
3487 && !dyn_i
->pltoff_done
)
3489 bfd_vma gp
= _bfd_get_gp_value (abfd
);
3491 /* Fill in the function descriptor. */
3492 bfd_put_64 (abfd
, value
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
);
3493 bfd_put_64 (abfd
, gp
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
+ 8);
3495 /* Install dynamic relocations if needed. */
3497 && bfd_link_pic (info
)
3499 || (ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3500 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, dyn_i
->h
))
3501 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3503 unsigned int dyn_r_type
;
3505 if (bfd_big_endian (abfd
))
3506 dyn_r_type
= R_IA64_RELNNMSB
;
3508 dyn_r_type
= R_IA64_RELNNLSB
;
3510 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3511 ia64_info
->rel_pltoff_sec
,
3512 dyn_i
->pltoff_offset
,
3513 dyn_r_type
, 0, value
);
3514 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3515 ia64_info
->rel_pltoff_sec
,
3516 dyn_i
->pltoff_offset
+ ARCH_SIZE
/ 8,
3520 dyn_i
->pltoff_done
= 1;
3523 /* Return the descriptor's address. */
3524 value
= (pltoff_sec
->output_section
->vma
3525 + pltoff_sec
->output_offset
3526 + dyn_i
->pltoff_offset
);
3531 /* Return the base VMA address which should be subtracted from real addresses
3532 when resolving @tprel() relocation.
3533 Main program TLS (whose template starts at PT_TLS p_vaddr)
3534 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3537 elfNN_ia64_tprel_base (struct bfd_link_info
*info
)
3539 asection
*tls_sec
= elf_hash_table (info
)->tls_sec
;
3540 return tls_sec
->vma
- align_power ((bfd_vma
) ARCH_SIZE
/ 4,
3541 tls_sec
->alignment_power
);
3544 /* Return the base VMA address which should be subtracted from real addresses
3545 when resolving @dtprel() relocation.
3546 This is PT_TLS segment p_vaddr. */
3549 elfNN_ia64_dtprel_base (struct bfd_link_info
*info
)
3551 return elf_hash_table (info
)->tls_sec
->vma
;
3554 /* Called through qsort to sort the .IA_64.unwind section during a
3555 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3556 to the output bfd so we can do proper endianness frobbing. */
3558 static bfd
*elfNN_ia64_unwind_entry_compare_bfd
;
3561 elfNN_ia64_unwind_entry_compare (const void * a
, const void * b
)
3565 av
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, a
);
3566 bv
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, b
);
3568 return (av
< bv
? -1 : av
> bv
? 1 : 0);
3571 /* Make sure we've got ourselves a nice fat __gp value. */
3573 elfNN_ia64_choose_gp (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
)
3575 bfd_vma min_vma
= (bfd_vma
) -1, max_vma
= 0;
3576 bfd_vma min_short_vma
= min_vma
, max_short_vma
= 0;
3577 struct elf_link_hash_entry
*gp
;
3580 struct elfNN_ia64_link_hash_table
*ia64_info
;
3582 ia64_info
= elfNN_ia64_hash_table (info
);
3583 if (ia64_info
== NULL
)
3586 /* Find the min and max vma of all sections marked short. Also collect
3587 min and max vma of any type, for use in selecting a nice gp. */
3588 for (os
= abfd
->sections
; os
; os
= os
->next
)
3592 if ((os
->flags
& SEC_ALLOC
) == 0)
3596 /* When this function is called from elfNN_ia64_final_link
3597 the correct value to use is os->size. When called from
3598 elfNN_ia64_relax_section we are in the middle of section
3599 sizing; some sections will already have os->size set, others
3600 will have os->size zero and os->rawsize the previous size. */
3601 hi
= os
->vma
+ (!final
&& os
->rawsize
? os
->rawsize
: os
->size
);
3609 if (os
->flags
& SEC_SMALL_DATA
)
3611 if (min_short_vma
> lo
)
3613 if (max_short_vma
< hi
)
3618 if (ia64_info
->min_short_sec
)
3621 > (ia64_info
->min_short_sec
->vma
3622 + ia64_info
->min_short_offset
))
3623 min_short_vma
= (ia64_info
->min_short_sec
->vma
3624 + ia64_info
->min_short_offset
);
3626 < (ia64_info
->max_short_sec
->vma
3627 + ia64_info
->max_short_offset
))
3628 max_short_vma
= (ia64_info
->max_short_sec
->vma
3629 + ia64_info
->max_short_offset
);
3632 /* See if the user wants to force a value. */
3633 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3637 && (gp
->root
.type
== bfd_link_hash_defined
3638 || gp
->root
.type
== bfd_link_hash_defweak
))
3640 asection
*gp_sec
= gp
->root
.u
.def
.section
;
3641 gp_val
= (gp
->root
.u
.def
.value
3642 + gp_sec
->output_section
->vma
3643 + gp_sec
->output_offset
);
3647 /* Pick a sensible value. */
3649 if (ia64_info
->min_short_sec
)
3651 bfd_vma short_range
= max_short_vma
- min_short_vma
;
3653 /* If min_short_sec is set, pick one in the middle bewteen
3654 min_short_vma and max_short_vma. */
3655 if (short_range
>= 0x400000)
3657 gp_val
= min_short_vma
+ short_range
/ 2;
3661 asection
*got_sec
= ia64_info
->root
.sgot
;
3663 /* Start with just the address of the .got. */
3665 gp_val
= got_sec
->output_section
->vma
;
3666 else if (max_short_vma
!= 0)
3667 gp_val
= min_short_vma
;
3668 else if (max_vma
- min_vma
< 0x200000)
3671 gp_val
= max_vma
- 0x200000 + 8;
3674 /* If it is possible to address the entire image, but we
3675 don't with the choice above, adjust. */
3676 if (max_vma
- min_vma
< 0x400000
3677 && (max_vma
- gp_val
>= 0x200000
3678 || gp_val
- min_vma
> 0x200000))
3679 gp_val
= min_vma
+ 0x200000;
3680 else if (max_short_vma
!= 0)
3682 /* If we don't cover all the short data, adjust. */
3683 if (max_short_vma
- gp_val
>= 0x200000)
3684 gp_val
= min_short_vma
+ 0x200000;
3686 /* If we're addressing stuff past the end, adjust back. */
3687 if (gp_val
> max_vma
)
3688 gp_val
= max_vma
- 0x200000 + 8;
3692 /* Validate whether all SHF_IA_64_SHORT sections are within
3693 range of the chosen GP. */
3695 if (max_short_vma
!= 0)
3697 if (max_short_vma
- min_short_vma
>= 0x400000)
3701 /* xgettext:c-format */
3702 (_("%pB: short data segment overflowed (%#" PRIx64
" >= 0x400000)"),
3703 abfd
, (uint64_t) (max_short_vma
- min_short_vma
));
3706 else if ((gp_val
> min_short_vma
3707 && gp_val
- min_short_vma
> 0x200000)
3708 || (gp_val
< max_short_vma
3709 && max_short_vma
- gp_val
>= 0x200000))
3712 (_("%pB: __gp does not cover short data segment"), abfd
);
3717 _bfd_set_gp_value (abfd
, gp_val
);
3723 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3725 struct elfNN_ia64_link_hash_table
*ia64_info
;
3726 asection
*unwind_output_sec
;
3728 ia64_info
= elfNN_ia64_hash_table (info
);
3729 if (ia64_info
== NULL
)
3732 /* Make sure we've got ourselves a nice fat __gp value. */
3733 if (!bfd_link_relocatable (info
))
3736 struct elf_link_hash_entry
*gp
;
3738 /* We assume after gp is set, section size will only decrease. We
3739 need to adjust gp for it. */
3740 _bfd_set_gp_value (abfd
, 0);
3741 if (! elfNN_ia64_choose_gp (abfd
, info
, TRUE
))
3743 gp_val
= _bfd_get_gp_value (abfd
);
3745 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3749 gp
->root
.type
= bfd_link_hash_defined
;
3750 gp
->root
.u
.def
.value
= gp_val
;
3751 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3755 /* If we're producing a final executable, we need to sort the contents
3756 of the .IA_64.unwind section. Force this section to be relocated
3757 into memory rather than written immediately to the output file. */
3758 unwind_output_sec
= NULL
;
3759 if (!bfd_link_relocatable (info
))
3761 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3764 unwind_output_sec
= s
->output_section
;
3765 unwind_output_sec
->contents
3766 = bfd_malloc (unwind_output_sec
->size
);
3767 if (unwind_output_sec
->contents
== NULL
)
3772 /* Invoke the regular ELF backend linker to do all the work. */
3773 if (!bfd_elf_final_link (abfd
, info
))
3776 if (unwind_output_sec
)
3778 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3779 qsort (unwind_output_sec
->contents
,
3780 (size_t) (unwind_output_sec
->size
/ 24),
3782 elfNN_ia64_unwind_entry_compare
);
3784 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3785 unwind_output_sec
->contents
, (bfd_vma
) 0,
3786 unwind_output_sec
->size
))
3794 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3795 struct bfd_link_info
*info
,
3797 asection
*input_section
,
3799 Elf_Internal_Rela
*relocs
,
3800 Elf_Internal_Sym
*local_syms
,
3801 asection
**local_sections
)
3803 struct elfNN_ia64_link_hash_table
*ia64_info
;
3804 Elf_Internal_Shdr
*symtab_hdr
;
3805 Elf_Internal_Rela
*rel
;
3806 Elf_Internal_Rela
*relend
;
3808 bfd_boolean ret_val
= TRUE
; /* for non-fatal errors */
3811 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3812 ia64_info
= elfNN_ia64_hash_table (info
);
3813 if (ia64_info
== NULL
)
3816 /* Infect various flags from the input section to the output section. */
3817 if (bfd_link_relocatable (info
))
3821 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3822 flags
&= SHF_IA_64_NORECOV
;
3824 elf_section_data(input_section
->output_section
)
3825 ->this_hdr
.sh_flags
|= flags
;
3828 gp_val
= _bfd_get_gp_value (output_bfd
);
3829 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, FALSE
);
3832 relend
= relocs
+ input_section
->reloc_count
;
3833 for (; rel
< relend
; ++rel
)
3835 struct elf_link_hash_entry
*h
;
3836 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3837 bfd_reloc_status_type r
;
3838 reloc_howto_type
*howto
;
3839 unsigned long r_symndx
;
3840 Elf_Internal_Sym
*sym
;
3841 unsigned int r_type
;
3845 bfd_boolean dynamic_symbol_p
;
3846 bfd_boolean undef_weak_ref
;
3848 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3849 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3851 /* xgettext:c-format */
3852 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3853 input_bfd
, (int) r_type
);
3854 bfd_set_error (bfd_error_bad_value
);
3859 howto
= ia64_elf_lookup_howto (r_type
);
3866 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3870 undef_weak_ref
= FALSE
;
3872 if (r_symndx
< symtab_hdr
->sh_info
)
3874 /* Reloc against local symbol. */
3876 sym
= local_syms
+ r_symndx
;
3877 sym_sec
= local_sections
[r_symndx
];
3879 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3880 if (!bfd_link_relocatable (info
)
3881 && (sym_sec
->flags
& SEC_MERGE
) != 0
3882 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3883 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3885 struct elfNN_ia64_local_hash_entry
*loc_h
;
3887 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, FALSE
);
3888 if (loc_h
&& ! loc_h
->sec_merge_done
)
3890 struct elfNN_ia64_dyn_sym_info
*dynent
;
3893 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3899 _bfd_merged_section_offset (output_bfd
, &msec
,
3900 elf_section_data (msec
)->
3904 dynent
->addend
-= sym
->st_value
;
3905 dynent
->addend
+= msec
->output_section
->vma
3906 + msec
->output_offset
3907 - sym_sec
->output_section
->vma
3908 - sym_sec
->output_offset
;
3911 /* We may have introduced duplicated entries. We need
3912 to remove them properly. */
3913 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3914 if (count
!= loc_h
->count
)
3916 loc_h
->count
= count
;
3917 loc_h
->sorted_count
= count
;
3920 loc_h
->sec_merge_done
= 1;
3926 bfd_boolean unresolved_reloc
;
3927 bfd_boolean warned
, ignored
;
3928 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3930 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3931 r_symndx
, symtab_hdr
, sym_hashes
,
3933 unresolved_reloc
, warned
, ignored
);
3935 if (h
->root
.type
== bfd_link_hash_undefweak
)
3936 undef_weak_ref
= TRUE
;
3937 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3941 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3942 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3943 rel
, 1, relend
, howto
, 0, contents
);
3945 if (bfd_link_relocatable (info
))
3948 hit_addr
= contents
+ rel
->r_offset
;
3949 value
+= rel
->r_addend
;
3950 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3961 case R_IA64_DIR32MSB
:
3962 case R_IA64_DIR32LSB
:
3963 case R_IA64_DIR64MSB
:
3964 case R_IA64_DIR64LSB
:
3965 /* Install a dynamic relocation for this reloc. */
3966 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3967 && !(h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
3968 && r_symndx
!= STN_UNDEF
3969 && (input_section
->flags
& SEC_ALLOC
) != 0)
3971 unsigned int dyn_r_type
;
3975 BFD_ASSERT (srel
!= NULL
);
3982 /* ??? People shouldn't be doing non-pic code in
3983 shared libraries nor dynamic executables. */
3985 /* xgettext:c-format */
3986 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
3988 h
? h
->root
.root
.string
3989 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
3998 /* If we don't need dynamic symbol lookup, find a
3999 matching RELATIVE relocation. */
4000 dyn_r_type
= r_type
;
4001 if (dynamic_symbol_p
)
4003 dynindx
= h
->dynindx
;
4004 addend
= rel
->r_addend
;
4011 case R_IA64_DIR32MSB
:
4012 dyn_r_type
= R_IA64_REL32MSB
;
4014 case R_IA64_DIR32LSB
:
4015 dyn_r_type
= R_IA64_REL32LSB
;
4017 case R_IA64_DIR64MSB
:
4018 dyn_r_type
= R_IA64_REL64MSB
;
4020 case R_IA64_DIR64LSB
:
4021 dyn_r_type
= R_IA64_REL64LSB
;
4031 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4032 srel
, rel
->r_offset
, dyn_r_type
,
4037 case R_IA64_LTV32MSB
:
4038 case R_IA64_LTV32LSB
:
4039 case R_IA64_LTV64MSB
:
4040 case R_IA64_LTV64LSB
:
4041 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4044 case R_IA64_GPREL22
:
4045 case R_IA64_GPREL64I
:
4046 case R_IA64_GPREL32MSB
:
4047 case R_IA64_GPREL32LSB
:
4048 case R_IA64_GPREL64MSB
:
4049 case R_IA64_GPREL64LSB
:
4050 if (dynamic_symbol_p
)
4053 /* xgettext:c-format */
4054 (_("%pB: @gprel relocation against dynamic symbol %s"),
4056 h
? h
->root
.root
.string
4057 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4063 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4066 case R_IA64_LTOFF22
:
4067 case R_IA64_LTOFF22X
:
4068 case R_IA64_LTOFF64I
:
4069 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4070 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4071 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4073 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4076 case R_IA64_PLTOFF22
:
4077 case R_IA64_PLTOFF64I
:
4078 case R_IA64_PLTOFF64MSB
:
4079 case R_IA64_PLTOFF64LSB
:
4080 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4081 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, FALSE
);
4083 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4086 case R_IA64_FPTR64I
:
4087 case R_IA64_FPTR32MSB
:
4088 case R_IA64_FPTR32LSB
:
4089 case R_IA64_FPTR64MSB
:
4090 case R_IA64_FPTR64LSB
:
4091 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4092 if (dyn_i
->want_fptr
)
4094 if (!undef_weak_ref
)
4095 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4097 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4100 unsigned int dyn_r_type
= r_type
;
4101 bfd_vma addend
= rel
->r_addend
;
4103 /* Otherwise, we expect the dynamic linker to create
4106 if (dyn_i
->want_fptr
)
4108 if (r_type
== R_IA64_FPTR64I
)
4110 /* We can't represent this without a dynamic symbol.
4111 Adjust the relocation to be against an output
4112 section symbol, which are always present in the
4113 dynamic symbol table. */
4114 /* ??? People shouldn't be doing non-pic code in
4115 shared libraries. Hork. */
4117 (_("%pB: linking non-pic code in a position independent executable"),
4124 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4128 if (h
->dynindx
!= -1)
4129 dynindx
= h
->dynindx
;
4131 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4132 (info
, h
->root
.u
.def
.section
->owner
,
4133 global_sym_index (h
)));
4138 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4139 (info
, input_bfd
, (long) r_symndx
));
4143 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4144 srel
, rel
->r_offset
, dyn_r_type
,
4148 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4151 case R_IA64_LTOFF_FPTR22
:
4152 case R_IA64_LTOFF_FPTR64I
:
4153 case R_IA64_LTOFF_FPTR32MSB
:
4154 case R_IA64_LTOFF_FPTR32LSB
:
4155 case R_IA64_LTOFF_FPTR64MSB
:
4156 case R_IA64_LTOFF_FPTR64LSB
:
4160 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4161 if (dyn_i
->want_fptr
)
4163 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4164 if (!undef_weak_ref
)
4165 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4170 /* Otherwise, we expect the dynamic linker to create
4174 if (h
->dynindx
!= -1)
4175 dynindx
= h
->dynindx
;
4177 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4178 (info
, h
->root
.u
.def
.section
->owner
,
4179 global_sym_index (h
)));
4182 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4183 (info
, input_bfd
, (long) r_symndx
));
4187 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4188 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4190 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4194 case R_IA64_PCREL32MSB
:
4195 case R_IA64_PCREL32LSB
:
4196 case R_IA64_PCREL64MSB
:
4197 case R_IA64_PCREL64LSB
:
4198 /* Install a dynamic relocation for this reloc. */
4199 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4201 BFD_ASSERT (srel
!= NULL
);
4203 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4204 srel
, rel
->r_offset
, r_type
,
4205 h
->dynindx
, rel
->r_addend
);
4209 case R_IA64_PCREL21B
:
4210 case R_IA64_PCREL60B
:
4211 /* We should have created a PLT entry for any dynamic symbol. */
4214 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4216 if (dyn_i
&& dyn_i
->want_plt2
)
4218 /* Should have caught this earlier. */
4219 BFD_ASSERT (rel
->r_addend
== 0);
4221 value
= (ia64_info
->root
.splt
->output_section
->vma
4222 + ia64_info
->root
.splt
->output_offset
4223 + dyn_i
->plt2_offset
);
4227 /* Since there's no PLT entry, Validate that this is
4229 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4231 /* If the symbol is undef_weak, we shouldn't be trying
4232 to call it. There's every chance that we'd wind up
4233 with an out-of-range fixup here. Don't bother setting
4234 any value at all. */
4240 case R_IA64_PCREL21BI
:
4241 case R_IA64_PCREL21F
:
4242 case R_IA64_PCREL21M
:
4243 case R_IA64_PCREL22
:
4244 case R_IA64_PCREL64I
:
4245 /* The PCREL21BI reloc is specifically not intended for use with
4246 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4247 fixup code, and thus probably ought not be dynamic. The
4248 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4249 if (dynamic_symbol_p
)
4253 if (r_type
== R_IA64_PCREL21BI
)
4254 /* xgettext:c-format */
4255 msg
= _("%pB: @internal branch to dynamic symbol %s");
4256 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4257 /* xgettext:c-format */
4258 msg
= _("%pB: speculation fixup to dynamic symbol %s");
4260 /* xgettext:c-format */
4261 msg
= _("%pB: @pcrel relocation against dynamic symbol %s");
4262 _bfd_error_handler (msg
, input_bfd
,
4263 h
? h
->root
.root
.string
4264 : bfd_elf_sym_name (input_bfd
,
4274 /* Make pc-relative. */
4275 value
-= (input_section
->output_section
->vma
4276 + input_section
->output_offset
4277 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4278 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4281 case R_IA64_SEGREL32MSB
:
4282 case R_IA64_SEGREL32LSB
:
4283 case R_IA64_SEGREL64MSB
:
4284 case R_IA64_SEGREL64LSB
:
4286 /* Find the segment that contains the output_section. */
4287 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4288 (output_bfd
, input_section
->output_section
);
4292 r
= bfd_reloc_notsupported
;
4296 /* The VMA of the segment is the vaddr of the associated
4298 if (value
> p
->p_vaddr
)
4299 value
-= p
->p_vaddr
;
4302 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4307 case R_IA64_SECREL32MSB
:
4308 case R_IA64_SECREL32LSB
:
4309 case R_IA64_SECREL64MSB
:
4310 case R_IA64_SECREL64LSB
:
4311 /* Make output-section relative to section where the symbol
4312 is defined. PR 475 */
4314 value
-= sym_sec
->output_section
->vma
;
4315 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4318 case R_IA64_IPLTMSB
:
4319 case R_IA64_IPLTLSB
:
4320 /* Install a dynamic relocation for this reloc. */
4321 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4322 && (input_section
->flags
& SEC_ALLOC
) != 0)
4324 BFD_ASSERT (srel
!= NULL
);
4326 /* If we don't need dynamic symbol lookup, install two
4327 RELATIVE relocations. */
4328 if (!dynamic_symbol_p
)
4330 unsigned int dyn_r_type
;
4332 if (r_type
== R_IA64_IPLTMSB
)
4333 dyn_r_type
= R_IA64_REL64MSB
;
4335 dyn_r_type
= R_IA64_REL64LSB
;
4337 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4339 srel
, rel
->r_offset
,
4340 dyn_r_type
, 0, value
);
4341 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4343 srel
, rel
->r_offset
+ 8,
4344 dyn_r_type
, 0, gp_val
);
4347 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4348 srel
, rel
->r_offset
, r_type
,
4349 h
->dynindx
, rel
->r_addend
);
4352 if (r_type
== R_IA64_IPLTMSB
)
4353 r_type
= R_IA64_DIR64MSB
;
4355 r_type
= R_IA64_DIR64LSB
;
4356 ia64_elf_install_value (hit_addr
, value
, r_type
);
4357 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4360 case R_IA64_TPREL14
:
4361 case R_IA64_TPREL22
:
4362 case R_IA64_TPREL64I
:
4363 if (elf_hash_table (info
)->tls_sec
== NULL
)
4364 goto missing_tls_sec
;
4365 value
-= elfNN_ia64_tprel_base (info
);
4366 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4369 case R_IA64_DTPREL14
:
4370 case R_IA64_DTPREL22
:
4371 case R_IA64_DTPREL64I
:
4372 case R_IA64_DTPREL32LSB
:
4373 case R_IA64_DTPREL32MSB
:
4374 case R_IA64_DTPREL64LSB
:
4375 case R_IA64_DTPREL64MSB
:
4376 if (elf_hash_table (info
)->tls_sec
== NULL
)
4377 goto missing_tls_sec
;
4378 value
-= elfNN_ia64_dtprel_base (info
);
4379 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4382 case R_IA64_LTOFF_TPREL22
:
4383 case R_IA64_LTOFF_DTPMOD22
:
4384 case R_IA64_LTOFF_DTPREL22
:
4387 long dynindx
= h
? h
->dynindx
: -1;
4388 bfd_vma r_addend
= rel
->r_addend
;
4393 case R_IA64_LTOFF_TPREL22
:
4394 if (!dynamic_symbol_p
)
4396 if (elf_hash_table (info
)->tls_sec
== NULL
)
4397 goto missing_tls_sec
;
4398 if (!bfd_link_pic (info
))
4399 value
-= elfNN_ia64_tprel_base (info
);
4402 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4406 got_r_type
= R_IA64_TPREL64LSB
;
4408 case R_IA64_LTOFF_DTPMOD22
:
4409 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4411 got_r_type
= R_IA64_DTPMOD64LSB
;
4413 case R_IA64_LTOFF_DTPREL22
:
4414 if (!dynamic_symbol_p
)
4416 if (elf_hash_table (info
)->tls_sec
== NULL
)
4417 goto missing_tls_sec
;
4418 value
-= elfNN_ia64_dtprel_base (info
);
4420 got_r_type
= R_IA64_DTPRELNNLSB
;
4423 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4424 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4427 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4432 r
= bfd_reloc_notsupported
;
4441 case bfd_reloc_undefined
:
4442 /* This can happen for global table relative relocs if
4443 __gp is undefined. This is a panic situation so we
4444 don't try to continue. */
4445 (*info
->callbacks
->undefined_symbol
)
4446 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4449 case bfd_reloc_notsupported
:
4454 name
= h
->root
.root
.string
;
4456 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4458 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4460 input_section
, rel
->r_offset
);
4465 case bfd_reloc_dangerous
:
4466 case bfd_reloc_outofrange
:
4467 case bfd_reloc_overflow
:
4474 name
= h
->root
.root
.string
;
4476 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4481 case R_IA64_TPREL14
:
4482 case R_IA64_TPREL22
:
4483 case R_IA64_TPREL64I
:
4484 case R_IA64_DTPREL14
:
4485 case R_IA64_DTPREL22
:
4486 case R_IA64_DTPREL64I
:
4487 case R_IA64_DTPREL32LSB
:
4488 case R_IA64_DTPREL32MSB
:
4489 case R_IA64_DTPREL64LSB
:
4490 case R_IA64_DTPREL64MSB
:
4491 case R_IA64_LTOFF_TPREL22
:
4492 case R_IA64_LTOFF_DTPMOD22
:
4493 case R_IA64_LTOFF_DTPREL22
:
4495 /* xgettext:c-format */
4496 (_("%pB: missing TLS section for relocation %s against `%s'"
4497 " at %#" PRIx64
" in section `%pA'."),
4498 input_bfd
, howto
->name
, name
,
4499 (uint64_t) rel
->r_offset
, input_section
);
4502 case R_IA64_PCREL21B
:
4503 case R_IA64_PCREL21BI
:
4504 case R_IA64_PCREL21M
:
4505 case R_IA64_PCREL21F
:
4506 if (is_elf_hash_table (info
->hash
))
4508 /* Relaxtion is always performed for ELF output.
4509 Overflow failures for those relocations mean
4510 that the section is too big to relax. */
4512 /* xgettext:c-format */
4513 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4514 " in section `%pA' with size %#" PRIx64
4516 input_bfd
, howto
->name
, name
, (uint64_t) rel
->r_offset
,
4517 input_section
, (uint64_t) input_section
->size
);
4522 (*info
->callbacks
->reloc_overflow
) (info
,
4543 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4544 struct bfd_link_info
*info
,
4545 struct elf_link_hash_entry
*h
,
4546 Elf_Internal_Sym
*sym
)
4548 struct elfNN_ia64_link_hash_table
*ia64_info
;
4549 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4551 ia64_info
= elfNN_ia64_hash_table (info
);
4552 if (ia64_info
== NULL
)
4555 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4557 /* Fill in the PLT data, if required. */
4558 if (dyn_i
&& dyn_i
->want_plt
)
4560 Elf_Internal_Rela outrel
;
4563 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4565 gp_val
= _bfd_get_gp_value (output_bfd
);
4567 /* Initialize the minimal PLT entry. */
4569 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4570 plt_sec
= ia64_info
->root
.splt
;
4571 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4573 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4574 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4575 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4577 plt_addr
= (plt_sec
->output_section
->vma
4578 + plt_sec
->output_offset
4579 + dyn_i
->plt_offset
);
4580 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, TRUE
);
4582 /* Initialize the FULL PLT entry, if needed. */
4583 if (dyn_i
->want_plt2
)
4585 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4587 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4588 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4590 /* Mark the symbol as undefined, rather than as defined in the
4591 plt section. Leave the value alone. */
4592 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4593 first place. But perhaps elflink.c did some for us. */
4594 if (!h
->def_regular
)
4595 sym
->st_shndx
= SHN_UNDEF
;
4598 /* Create the dynamic relocation. */
4599 outrel
.r_offset
= pltoff_addr
;
4600 if (bfd_little_endian (output_bfd
))
4601 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4603 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4604 outrel
.r_addend
= 0;
4606 /* This is fun. In the .IA_64.pltoff section, we've got entries
4607 that correspond both to real PLT entries, and those that
4608 happened to resolve to local symbols but need to be created
4609 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4610 relocations for the real PLT should come at the end of the
4611 section, so that they can be indexed by plt entry at runtime.
4613 We emitted all of the relocations for the non-PLT @pltoff
4614 entries during relocate_section. So we can consider the
4615 existing sec->reloc_count to be the base of the array of
4618 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4619 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4620 * sizeof (ElfNN_External_Rela
));
4621 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4624 /* Mark some specially defined symbols as absolute. */
4625 if (h
== ia64_info
->root
.hdynamic
4626 || h
== ia64_info
->root
.hgot
4627 || h
== ia64_info
->root
.hplt
)
4628 sym
->st_shndx
= SHN_ABS
;
4634 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4635 struct bfd_link_info
*info
)
4637 struct elfNN_ia64_link_hash_table
*ia64_info
;
4640 ia64_info
= elfNN_ia64_hash_table (info
);
4641 if (ia64_info
== NULL
)
4644 dynobj
= ia64_info
->root
.dynobj
;
4646 if (ia64_info
->root
.dynamic_sections_created
)
4648 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4649 asection
*sdyn
, *sgotplt
;
4652 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4653 sgotplt
= ia64_info
->root
.sgotplt
;
4654 BFD_ASSERT (sdyn
!= NULL
);
4655 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4656 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4658 gp_val
= _bfd_get_gp_value (abfd
);
4660 for (; dyncon
< dynconend
; dyncon
++)
4662 Elf_Internal_Dyn dyn
;
4664 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4669 dyn
.d_un
.d_ptr
= gp_val
;
4673 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4674 * sizeof (ElfNN_External_Rela
));
4678 /* See the comment above in finish_dynamic_symbol. */
4679 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4680 + ia64_info
->rel_pltoff_sec
->output_offset
4681 + (ia64_info
->rel_pltoff_sec
->reloc_count
4682 * sizeof (ElfNN_External_Rela
)));
4685 case DT_IA_64_PLT_RESERVE
:
4686 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4687 + sgotplt
->output_offset
);
4691 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4694 /* Initialize the PLT0 entry. */
4695 if (ia64_info
->root
.splt
)
4697 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4700 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4702 pltres
= (sgotplt
->output_section
->vma
4703 + sgotplt
->output_offset
4706 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4713 /* ELF file flag handling: */
4715 /* Function to keep IA-64 specific file flags. */
4717 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4719 BFD_ASSERT (!elf_flags_init (abfd
)
4720 || elf_elfheader (abfd
)->e_flags
== flags
);
4722 elf_elfheader (abfd
)->e_flags
= flags
;
4723 elf_flags_init (abfd
) = TRUE
;
4727 /* Merge backend specific data from an object file to the output
4728 object file when linking. */
4731 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4733 bfd
*obfd
= info
->output_bfd
;
4736 bfd_boolean ok
= TRUE
;
4738 /* FIXME: What should be checked when linking shared libraries? */
4739 if ((ibfd
->flags
& DYNAMIC
) != 0)
4742 if (!is_ia64_elf (ibfd
) || !is_ia64_elf (obfd
))
4745 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4746 out_flags
= elf_elfheader (obfd
)->e_flags
;
4748 if (! elf_flags_init (obfd
))
4750 elf_flags_init (obfd
) = TRUE
;
4751 elf_elfheader (obfd
)->e_flags
= in_flags
;
4753 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4754 && bfd_get_arch_info (obfd
)->the_default
)
4756 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4757 bfd_get_mach (ibfd
));
4763 /* Check flag compatibility. */
4764 if (in_flags
== out_flags
)
4767 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4768 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4769 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4771 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4774 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
4777 bfd_set_error (bfd_error_bad_value
);
4780 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4783 (_("%pB: linking big-endian files with little-endian files"),
4786 bfd_set_error (bfd_error_bad_value
);
4789 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4792 (_("%pB: linking 64-bit files with 32-bit files"),
4795 bfd_set_error (bfd_error_bad_value
);
4798 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4801 (_("%pB: linking constant-gp files with non-constant-gp files"),
4804 bfd_set_error (bfd_error_bad_value
);
4807 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4808 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4811 (_("%pB: linking auto-pic files with non-auto-pic files"),
4814 bfd_set_error (bfd_error_bad_value
);
4822 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4824 FILE *file
= (FILE *) ptr
;
4825 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4827 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4829 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4830 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4831 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4832 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4833 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4834 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4835 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4836 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4837 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4839 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4843 static enum elf_reloc_type_class
4844 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4845 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4846 const Elf_Internal_Rela
*rela
)
4848 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4850 case R_IA64_REL32MSB
:
4851 case R_IA64_REL32LSB
:
4852 case R_IA64_REL64MSB
:
4853 case R_IA64_REL64LSB
:
4854 return reloc_class_relative
;
4855 case R_IA64_IPLTMSB
:
4856 case R_IA64_IPLTLSB
:
4857 return reloc_class_plt
;
4859 return reloc_class_copy
;
4861 return reloc_class_normal
;
4865 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4867 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4868 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4869 { NULL
, 0, 0, 0, 0 }
4873 elfNN_ia64_object_p (bfd
*abfd
)
4876 asection
*group
, *unwi
, *unw
;
4879 char *unwi_name
, *unw_name
;
4882 if (abfd
->flags
& DYNAMIC
)
4885 /* Flags for fake group section. */
4886 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4889 /* We add a fake section group for each .gnu.linkonce.t.* section,
4890 which isn't in a section group, and its unwind sections. */
4891 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4893 if (elf_sec_group (sec
) == NULL
4894 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4895 == (SEC_LINK_ONCE
| SEC_CODE
))
4896 && CONST_STRNEQ (sec
->name
, ".gnu.linkonce.t."))
4898 name
= sec
->name
+ 16;
4900 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4901 unwi_name
= bfd_alloc (abfd
, amt
);
4905 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4906 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4908 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4909 unw_name
= bfd_alloc (abfd
, amt
);
4913 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4914 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4916 /* We need to create a fake group section for it and its
4918 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4923 /* Move the fake group section to the beginning. */
4924 bfd_section_list_remove (abfd
, group
);
4925 bfd_section_list_prepend (abfd
, group
);
4927 elf_next_in_group (group
) = sec
;
4929 elf_group_name (sec
) = name
;
4930 elf_next_in_group (sec
) = sec
;
4931 elf_sec_group (sec
) = group
;
4935 elf_group_name (unwi
) = name
;
4936 elf_next_in_group (unwi
) = sec
;
4937 elf_next_in_group (sec
) = unwi
;
4938 elf_sec_group (unwi
) = group
;
4943 elf_group_name (unw
) = name
;
4946 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4947 elf_next_in_group (unwi
) = unw
;
4951 elf_next_in_group (unw
) = sec
;
4952 elf_next_in_group (sec
) = unw
;
4954 elf_sec_group (unw
) = group
;
4957 /* Fake SHT_GROUP section header. */
4958 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4959 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4966 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4968 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4969 return (vec
== &ia64_elfNN_hpux_be_vec
);
4973 elfNN_hpux_init_file_header (bfd
*abfd
, struct bfd_link_info
*info
)
4975 Elf_Internal_Ehdr
*i_ehdrp
;
4977 if (!_bfd_elf_init_file_header (abfd
, info
))
4980 i_ehdrp
= elf_elfheader (abfd
);
4981 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4982 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4987 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4988 asection
*sec
, int *retval
)
4990 if (bfd_is_com_section (sec
))
4992 *retval
= SHN_IA_64_ANSI_COMMON
;
4999 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5002 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
5004 switch (elfsym
->internal_elf_sym
.st_shndx
)
5006 case SHN_IA_64_ANSI_COMMON
:
5007 asym
->section
= bfd_com_section_ptr
;
5008 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
5009 asym
->flags
&= ~BSF_GLOBAL
;
5015 ignore_errors (const char *fmt ATTRIBUTE_UNUSED
, ...)
5019 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
5020 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5021 #define TARGET_BIG_SYM ia64_elfNN_be_vec
5022 #define TARGET_BIG_NAME "elfNN-ia64-big"
5023 #define ELF_ARCH bfd_arch_ia64
5024 #define ELF_TARGET_ID IA64_ELF_DATA
5025 #define ELF_MACHINE_CODE EM_IA_64
5026 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5027 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5028 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5029 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5031 #define elf_backend_section_from_shdr \
5032 elfNN_ia64_section_from_shdr
5033 #define elf_backend_section_flags \
5034 elfNN_ia64_section_flags
5035 #define elf_backend_fake_sections \
5036 elfNN_ia64_fake_sections
5037 #define elf_backend_final_write_processing \
5038 elfNN_ia64_final_write_processing
5039 #define elf_backend_add_symbol_hook \
5040 elfNN_ia64_add_symbol_hook
5041 #define elf_backend_additional_program_headers \
5042 elfNN_ia64_additional_program_headers
5043 #define elf_backend_modify_segment_map \
5044 elfNN_ia64_modify_segment_map
5045 #define elf_backend_modify_headers \
5046 elfNN_ia64_modify_headers
5047 #define elf_info_to_howto \
5048 elfNN_ia64_info_to_howto
5050 #define bfd_elfNN_bfd_reloc_type_lookup \
5051 ia64_elf_reloc_type_lookup
5052 #define bfd_elfNN_bfd_reloc_name_lookup \
5053 ia64_elf_reloc_name_lookup
5054 #define bfd_elfNN_bfd_is_local_label_name \
5055 elfNN_ia64_is_local_label_name
5056 #define bfd_elfNN_bfd_relax_section \
5057 elfNN_ia64_relax_section
5059 #define elf_backend_object_p \
5062 /* Stuff for the BFD linker: */
5063 #define bfd_elfNN_bfd_link_hash_table_create \
5064 elfNN_ia64_hash_table_create
5065 #define elf_backend_create_dynamic_sections \
5066 elfNN_ia64_create_dynamic_sections
5067 #define elf_backend_check_relocs \
5068 elfNN_ia64_check_relocs
5069 #define elf_backend_adjust_dynamic_symbol \
5070 elfNN_ia64_adjust_dynamic_symbol
5071 #define elf_backend_size_dynamic_sections \
5072 elfNN_ia64_size_dynamic_sections
5073 #define elf_backend_omit_section_dynsym \
5074 _bfd_elf_omit_section_dynsym_all
5075 #define elf_backend_relocate_section \
5076 elfNN_ia64_relocate_section
5077 #define elf_backend_finish_dynamic_symbol \
5078 elfNN_ia64_finish_dynamic_symbol
5079 #define elf_backend_finish_dynamic_sections \
5080 elfNN_ia64_finish_dynamic_sections
5081 #define bfd_elfNN_bfd_final_link \
5082 elfNN_ia64_final_link
5084 #define bfd_elfNN_bfd_merge_private_bfd_data \
5085 elfNN_ia64_merge_private_bfd_data
5086 #define bfd_elfNN_bfd_set_private_flags \
5087 elfNN_ia64_set_private_flags
5088 #define bfd_elfNN_bfd_print_private_bfd_data \
5089 elfNN_ia64_print_private_bfd_data
5091 #define elf_backend_plt_readonly 1
5092 #define elf_backend_can_gc_sections 1
5093 #define elf_backend_want_plt_sym 0
5094 #define elf_backend_plt_alignment 5
5095 #define elf_backend_got_header_size 0
5096 #define elf_backend_want_got_plt 1
5097 #define elf_backend_may_use_rel_p 1
5098 #define elf_backend_may_use_rela_p 1
5099 #define elf_backend_default_use_rela_p 1
5100 #define elf_backend_want_dynbss 0
5101 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5102 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5103 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5104 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5105 #define elf_backend_rela_normal 1
5106 #define elf_backend_dtrel_excludes_plt 1
5107 #define elf_backend_special_sections elfNN_ia64_special_sections
5108 #define elf_backend_default_execstack 0
5110 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5111 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5112 We don't want to flood users with so many error messages. We turn
5113 off the warning for now. It will be turned on later when the Intel
5114 compiler is fixed. */
5115 #define elf_backend_link_order_error_handler ignore_errors
5117 #include "elfNN-target.h"
5119 /* HPUX-specific vectors. */
5121 #undef TARGET_LITTLE_SYM
5122 #undef TARGET_LITTLE_NAME
5123 #undef TARGET_BIG_SYM
5124 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5125 #undef TARGET_BIG_NAME
5126 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5128 /* These are HP-UX specific functions. */
5130 #undef elf_backend_init_file_header
5131 #define elf_backend_init_file_header elfNN_hpux_init_file_header
5133 #undef elf_backend_section_from_bfd_section
5134 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5136 #undef elf_backend_symbol_processing
5137 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5139 #undef elf_backend_want_p_paddr_set_to_zero
5140 #define elf_backend_want_p_paddr_set_to_zero 1
5142 #undef ELF_COMMONPAGESIZE
5144 #define ELF_OSABI ELFOSABI_HPUX
5147 #define elfNN_bed elfNN_ia64_hpux_bed
5149 #include "elfNN-target.h"