1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2016 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "opcode/ia64.h"
30 #include "bfd_stdint.h"
31 #include "elfxx-ia64.h"
36 #define LOG_SECTION_ALIGN 3
40 #define LOG_SECTION_ALIGN 2
43 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
44 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
46 /* In dynamically (linker-) created sections, we generally need to keep track
47 of the place a symbol or expression got allocated to. This is done via hash
48 tables that store entries of the following type. */
50 struct elfNN_ia64_dyn_sym_info
52 /* The addend for which this entry is relevant. */
57 bfd_vma pltoff_offset
;
61 bfd_vma dtpmod_offset
;
62 bfd_vma dtprel_offset
;
64 /* The symbol table entry, if any, that this was derived from. */
65 struct elf_link_hash_entry
*h
;
67 /* Used to count non-got, non-plt relocations for delayed sizing
68 of relocation sections. */
69 struct elfNN_ia64_dyn_reloc_entry
71 struct elfNN_ia64_dyn_reloc_entry
*next
;
76 /* Is this reloc against readonly section? */
80 /* TRUE when the section contents have been updated. */
81 unsigned got_done
: 1;
82 unsigned fptr_done
: 1;
83 unsigned pltoff_done
: 1;
84 unsigned tprel_done
: 1;
85 unsigned dtpmod_done
: 1;
86 unsigned dtprel_done
: 1;
88 /* TRUE for the different kinds of linker data we want created. */
89 unsigned want_got
: 1;
90 unsigned want_gotx
: 1;
91 unsigned want_fptr
: 1;
92 unsigned want_ltoff_fptr
: 1;
93 unsigned want_plt
: 1;
94 unsigned want_plt2
: 1;
95 unsigned want_pltoff
: 1;
96 unsigned want_tprel
: 1;
97 unsigned want_dtpmod
: 1;
98 unsigned want_dtprel
: 1;
101 struct elfNN_ia64_local_hash_entry
105 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
107 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
108 unsigned int sorted_count
;
109 /* The size of elfNN_ia64_dyn_sym_info array. */
111 /* The array of elfNN_ia64_dyn_sym_info. */
112 struct elfNN_ia64_dyn_sym_info
*info
;
114 /* TRUE if this hash entry's addends was translated for
115 SHF_MERGE optimization. */
116 unsigned sec_merge_done
: 1;
119 struct elfNN_ia64_link_hash_entry
121 struct elf_link_hash_entry root
;
122 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
124 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
125 unsigned int sorted_count
;
126 /* The size of elfNN_ia64_dyn_sym_info array. */
128 /* The array of elfNN_ia64_dyn_sym_info. */
129 struct elfNN_ia64_dyn_sym_info
*info
;
132 struct elfNN_ia64_link_hash_table
134 /* The main hash table. */
135 struct elf_link_hash_table root
;
137 asection
*fptr_sec
; /* Function descriptor table (or NULL). */
138 asection
*rel_fptr_sec
; /* Dynamic relocation section for same. */
139 asection
*pltoff_sec
; /* Private descriptors for plt (or NULL). */
140 asection
*rel_pltoff_sec
; /* Dynamic relocation section for same. */
142 bfd_size_type minplt_entries
; /* Number of minplt entries. */
143 unsigned reltext
: 1; /* Are there relocs against readonly sections? */
144 unsigned self_dtpmod_done
: 1;/* Has self DTPMOD entry been finished? */
145 bfd_vma self_dtpmod_offset
; /* .got offset to self DTPMOD entry. */
146 /* There are maybe R_IA64_GPREL22 relocations, including those
147 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
148 sections. We need to record those sections so that we can choose
149 a proper GP to cover all R_IA64_GPREL22 relocations. */
150 asection
*max_short_sec
; /* Maximum short output section. */
151 bfd_vma max_short_offset
; /* Maximum short offset. */
152 asection
*min_short_sec
; /* Minimum short output section. */
153 bfd_vma min_short_offset
; /* Minimum short offset. */
155 htab_t loc_hash_table
;
156 void *loc_hash_memory
;
159 struct elfNN_ia64_allocate_data
161 struct bfd_link_info
*info
;
163 bfd_boolean only_got
;
166 #define elfNN_ia64_hash_table(p) \
167 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
168 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
170 static struct elfNN_ia64_dyn_sym_info
* get_dyn_sym_info
171 (struct elfNN_ia64_link_hash_table
*ia64_info
,
172 struct elf_link_hash_entry
*h
,
173 bfd
*abfd
, const Elf_Internal_Rela
*rel
, bfd_boolean create
);
174 static bfd_boolean elfNN_ia64_dynamic_symbol_p
175 (struct elf_link_hash_entry
*h
, struct bfd_link_info
*info
, int);
176 static bfd_boolean elfNN_ia64_choose_gp
177 (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
);
178 static void elfNN_ia64_dyn_sym_traverse
179 (struct elfNN_ia64_link_hash_table
*ia64_info
,
180 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
182 static bfd_boolean allocate_global_data_got
183 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
184 static bfd_boolean allocate_global_fptr_got
185 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
186 static bfd_boolean allocate_local_got
187 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
188 static bfd_boolean elfNN_ia64_hpux_vec
189 (const bfd_target
*vec
);
190 static bfd_boolean allocate_dynrel_entries
191 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
192 static asection
*get_pltoff
193 (bfd
*abfd
, struct bfd_link_info
*info
,
194 struct elfNN_ia64_link_hash_table
*ia64_info
);
196 /* ia64-specific relocation. */
198 /* Given a ELF reloc, return the matching HOWTO structure. */
201 elfNN_ia64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
203 Elf_Internal_Rela
*elf_reloc
)
206 = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc
->r_info
));
209 #define PLT_HEADER_SIZE (3 * 16)
210 #define PLT_MIN_ENTRY_SIZE (1 * 16)
211 #define PLT_FULL_ENTRY_SIZE (2 * 16)
212 #define PLT_RESERVED_WORDS 3
214 static const bfd_byte plt_header
[PLT_HEADER_SIZE
] =
216 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
217 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
218 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
219 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
220 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
221 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
222 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
223 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
224 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
227 static const bfd_byte plt_min_entry
[PLT_MIN_ENTRY_SIZE
] =
229 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
230 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
231 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
234 static const bfd_byte plt_full_entry
[PLT_FULL_ENTRY_SIZE
] =
236 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
237 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
238 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
239 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
240 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
241 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
244 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
246 static const bfd_byte oor_brl
[16] =
248 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
250 0x00, 0x00, 0x00, 0xc0
253 static const bfd_byte oor_ip
[48] =
255 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
256 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
257 0x01, 0x00, 0x00, 0x60,
258 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
259 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
260 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
261 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
262 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
263 0x60, 0x00, 0x80, 0x00 /* br b6;; */
266 static size_t oor_branch_size
= sizeof (oor_brl
);
269 bfd_elfNN_ia64_after_parse (int itanium
)
271 oor_branch_size
= itanium
? sizeof (oor_ip
) : sizeof (oor_brl
);
275 /* Rename some of the generic section flags to better document how they
277 #define skip_relax_pass_0 sec_flg0
278 #define skip_relax_pass_1 sec_flg1
280 /* These functions do relaxation for IA-64 ELF. */
283 elfNN_ia64_update_short_info (asection
*sec
, bfd_vma offset
,
284 struct elfNN_ia64_link_hash_table
*ia64_info
)
286 /* Skip ABS and SHF_IA_64_SHORT sections. */
287 if (sec
== bfd_abs_section_ptr
288 || (sec
->flags
& SEC_SMALL_DATA
) != 0)
291 if (!ia64_info
->min_short_sec
)
293 ia64_info
->max_short_sec
= sec
;
294 ia64_info
->max_short_offset
= offset
;
295 ia64_info
->min_short_sec
= sec
;
296 ia64_info
->min_short_offset
= offset
;
298 else if (sec
== ia64_info
->max_short_sec
299 && offset
> ia64_info
->max_short_offset
)
300 ia64_info
->max_short_offset
= offset
;
301 else if (sec
== ia64_info
->min_short_sec
302 && offset
< ia64_info
->min_short_offset
)
303 ia64_info
->min_short_offset
= offset
;
304 else if (sec
->output_section
->vma
305 > ia64_info
->max_short_sec
->vma
)
307 ia64_info
->max_short_sec
= sec
;
308 ia64_info
->max_short_offset
= offset
;
310 else if (sec
->output_section
->vma
311 < ia64_info
->min_short_sec
->vma
)
313 ia64_info
->min_short_sec
= sec
;
314 ia64_info
->min_short_offset
= offset
;
319 elfNN_ia64_relax_section (bfd
*abfd
, asection
*sec
,
320 struct bfd_link_info
*link_info
,
325 struct one_fixup
*next
;
331 Elf_Internal_Shdr
*symtab_hdr
;
332 Elf_Internal_Rela
*internal_relocs
;
333 Elf_Internal_Rela
*irel
, *irelend
;
335 Elf_Internal_Sym
*isymbuf
= NULL
;
336 struct elfNN_ia64_link_hash_table
*ia64_info
;
337 struct one_fixup
*fixups
= NULL
;
338 bfd_boolean changed_contents
= FALSE
;
339 bfd_boolean changed_relocs
= FALSE
;
340 bfd_boolean changed_got
= FALSE
;
341 bfd_boolean skip_relax_pass_0
= TRUE
;
342 bfd_boolean skip_relax_pass_1
= TRUE
;
345 /* Assume we're not going to change any sizes, and we'll only need
349 if (bfd_link_relocatable (link_info
))
350 (*link_info
->callbacks
->einfo
)
351 (_("%P%F: --relax and -r may not be used together\n"));
353 /* Don't even try to relax for non-ELF outputs. */
354 if (!is_elf_hash_table (link_info
->hash
))
357 /* Nothing to do if there are no relocations or there is no need for
359 if ((sec
->flags
& SEC_RELOC
) == 0
360 || sec
->reloc_count
== 0
361 || (link_info
->relax_pass
== 0 && sec
->skip_relax_pass_0
)
362 || (link_info
->relax_pass
== 1 && sec
->skip_relax_pass_1
))
365 ia64_info
= elfNN_ia64_hash_table (link_info
);
366 if (ia64_info
== NULL
)
369 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
371 /* Load the relocations for this section. */
372 internal_relocs
= (_bfd_elf_link_read_relocs
373 (abfd
, sec
, NULL
, (Elf_Internal_Rela
*) NULL
,
374 link_info
->keep_memory
));
375 if (internal_relocs
== NULL
)
378 irelend
= internal_relocs
+ sec
->reloc_count
;
380 /* Get the section contents. */
381 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
382 contents
= elf_section_data (sec
)->this_hdr
.contents
;
385 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
389 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
391 unsigned long r_type
= ELFNN_R_TYPE (irel
->r_info
);
392 bfd_vma symaddr
, reladdr
, trampoff
, toff
, roff
;
396 bfd_boolean is_branch
;
397 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
402 case R_IA64_PCREL21B
:
403 case R_IA64_PCREL21BI
:
404 case R_IA64_PCREL21M
:
405 case R_IA64_PCREL21F
:
406 /* In pass 1, all br relaxations are done. We can skip it. */
407 if (link_info
->relax_pass
== 1)
409 skip_relax_pass_0
= FALSE
;
413 case R_IA64_PCREL60B
:
414 /* We can't optimize brl to br in pass 0 since br relaxations
415 will increase the code size. Defer it to pass 1. */
416 if (link_info
->relax_pass
== 0)
418 skip_relax_pass_1
= FALSE
;
425 /* Update max_short_sec/min_short_sec. */
427 case R_IA64_LTOFF22X
:
429 /* We can't relax ldx/mov in pass 0 since br relaxations will
430 increase the code size. Defer it to pass 1. */
431 if (link_info
->relax_pass
== 0)
433 skip_relax_pass_1
= FALSE
;
443 /* Get the value of the symbol referred to by the reloc. */
444 if (ELFNN_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
446 /* A local symbol. */
447 Elf_Internal_Sym
*isym
;
449 /* Read this BFD's local symbols. */
452 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
454 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
455 symtab_hdr
->sh_info
, 0,
461 isym
= isymbuf
+ ELFNN_R_SYM (irel
->r_info
);
462 if (isym
->st_shndx
== SHN_UNDEF
)
463 continue; /* We can't do anything with undefined symbols. */
464 else if (isym
->st_shndx
== SHN_ABS
)
465 tsec
= bfd_abs_section_ptr
;
466 else if (isym
->st_shndx
== SHN_COMMON
)
467 tsec
= bfd_com_section_ptr
;
468 else if (isym
->st_shndx
== SHN_IA_64_ANSI_COMMON
)
469 tsec
= bfd_com_section_ptr
;
471 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
473 toff
= isym
->st_value
;
474 dyn_i
= get_dyn_sym_info (ia64_info
, NULL
, abfd
, irel
, FALSE
);
475 symtype
= ELF_ST_TYPE (isym
->st_info
);
480 struct elf_link_hash_entry
*h
;
482 indx
= ELFNN_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
483 h
= elf_sym_hashes (abfd
)[indx
];
484 BFD_ASSERT (h
!= NULL
);
486 while (h
->root
.type
== bfd_link_hash_indirect
487 || h
->root
.type
== bfd_link_hash_warning
)
488 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
490 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, irel
, FALSE
);
492 /* For branches to dynamic symbols, we're interested instead
493 in a branch to the PLT entry. */
494 if (is_branch
&& dyn_i
&& dyn_i
->want_plt2
)
496 /* Internal branches shouldn't be sent to the PLT.
497 Leave this for now and we'll give an error later. */
498 if (r_type
!= R_IA64_PCREL21B
)
501 tsec
= ia64_info
->root
.splt
;
502 toff
= dyn_i
->plt2_offset
;
503 BFD_ASSERT (irel
->r_addend
== 0);
506 /* Can't do anything else with dynamic symbols. */
507 else if (elfNN_ia64_dynamic_symbol_p (h
, link_info
, r_type
))
512 /* We can't do anything with undefined symbols. */
513 if (h
->root
.type
== bfd_link_hash_undefined
514 || h
->root
.type
== bfd_link_hash_undefweak
)
517 tsec
= h
->root
.u
.def
.section
;
518 toff
= h
->root
.u
.def
.value
;
524 if (tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
526 /* At this stage in linking, no SEC_MERGE symbol has been
527 adjusted, so all references to such symbols need to be
528 passed through _bfd_merged_section_offset. (Later, in
529 relocate_section, all SEC_MERGE symbols *except* for
530 section symbols have been adjusted.)
532 gas may reduce relocations against symbols in SEC_MERGE
533 sections to a relocation against the section symbol when
534 the original addend was zero. When the reloc is against
535 a section symbol we should include the addend in the
536 offset passed to _bfd_merged_section_offset, since the
537 location of interest is the original symbol. On the
538 other hand, an access to "sym+addend" where "sym" is not
539 a section symbol should not include the addend; Such an
540 access is presumed to be an offset from "sym"; The
541 location of interest is just "sym". */
542 if (symtype
== STT_SECTION
)
543 toff
+= irel
->r_addend
;
545 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
546 elf_section_data (tsec
)->sec_info
,
549 if (symtype
!= STT_SECTION
)
550 toff
+= irel
->r_addend
;
553 toff
+= irel
->r_addend
;
555 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
557 roff
= irel
->r_offset
;
561 bfd_signed_vma offset
;
563 reladdr
= (sec
->output_section
->vma
565 + roff
) & (bfd_vma
) -4;
567 /* The .plt section is aligned at 32byte and the .text section
568 is aligned at 64byte. The .text section is right after the
569 .plt section. After the first relaxation pass, linker may
570 increase the gap between the .plt and .text sections up
571 to 32byte. We assume linker will always insert 32byte
572 between the .plt and .text sections after the first
574 if (tsec
== ia64_info
->root
.splt
)
575 offset
= -0x1000000 + 32;
579 /* If the branch is in range, no need to do anything. */
580 if ((bfd_signed_vma
) (symaddr
- reladdr
) >= offset
581 && (bfd_signed_vma
) (symaddr
- reladdr
) <= 0x0FFFFF0)
583 /* If the 60-bit branch is in 21-bit range, optimize it. */
584 if (r_type
== R_IA64_PCREL60B
)
586 ia64_elf_relax_brl (contents
, roff
);
589 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
592 /* If the original relocation offset points to slot
593 1, change it to slot 2. */
594 if ((irel
->r_offset
& 3) == 1)
600 else if (r_type
== R_IA64_PCREL60B
)
602 else if (ia64_elf_relax_br (contents
, roff
))
605 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
608 /* Make the relocation offset point to slot 1. */
609 irel
->r_offset
= (irel
->r_offset
& ~((bfd_vma
) 0x3)) + 1;
613 /* We can't put a trampoline in a .init/.fini section. Issue
615 if (strcmp (sec
->output_section
->name
, ".init") == 0
616 || strcmp (sec
->output_section
->name
, ".fini") == 0)
619 /* xgettext:c-format */
620 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
621 sec
->owner
, sec
, (unsigned long) roff
);
622 bfd_set_error (bfd_error_bad_value
);
626 /* If the branch and target are in the same section, you've
627 got one honking big section and we can't help you unless
628 you are branching backwards. You'll get an error message
630 if (tsec
== sec
&& toff
> roff
)
633 /* Look for an existing fixup to this address. */
634 for (f
= fixups
; f
; f
= f
->next
)
635 if (f
->tsec
== tsec
&& f
->toff
== toff
)
640 /* Two alternatives: If it's a branch to a PLT entry, we can
641 make a copy of the FULL_PLT entry. Otherwise, we'll have
642 to use a `brl' insn to get where we're going. */
646 if (tsec
== ia64_info
->root
.splt
)
647 size
= sizeof (plt_full_entry
);
649 size
= oor_branch_size
;
651 /* Resize the current section to make room for the new branch. */
652 trampoff
= (sec
->size
+ 15) & (bfd_vma
) -16;
654 /* If trampoline is out of range, there is nothing we
656 offset
= trampoff
- (roff
& (bfd_vma
) -4);
657 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
660 amt
= trampoff
+ size
;
661 contents
= (bfd_byte
*) bfd_realloc (contents
, amt
);
662 if (contents
== NULL
)
666 if (tsec
== ia64_info
->root
.splt
)
668 memcpy (contents
+ trampoff
, plt_full_entry
, size
);
670 /* Hijack the old relocation for use as the PLTOFF reloc. */
671 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
673 irel
->r_offset
= trampoff
;
677 if (size
== sizeof (oor_ip
))
679 memcpy (contents
+ trampoff
, oor_ip
, size
);
680 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
682 irel
->r_addend
-= 16;
683 irel
->r_offset
= trampoff
+ 2;
687 memcpy (contents
+ trampoff
, oor_brl
, size
);
688 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
690 irel
->r_offset
= trampoff
+ 2;
695 /* Record the fixup so we don't do it again this section. */
696 f
= (struct one_fixup
*)
697 bfd_malloc ((bfd_size_type
) sizeof (*f
));
701 f
->trampoff
= trampoff
;
706 /* If trampoline is out of range, there is nothing we
708 offset
= f
->trampoff
- (roff
& (bfd_vma
) -4);
709 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
712 /* Nop out the reloc, since we're finalizing things here. */
713 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
716 /* Fix up the existing branch to hit the trampoline. */
717 if (ia64_elf_install_value (contents
+ roff
, offset
, r_type
)
721 changed_contents
= TRUE
;
722 changed_relocs
= TRUE
;
729 bfd
*obfd
= sec
->output_section
->owner
;
730 gp
= _bfd_get_gp_value (obfd
);
733 if (!elfNN_ia64_choose_gp (obfd
, link_info
, FALSE
))
735 gp
= _bfd_get_gp_value (obfd
);
739 /* If the data is out of range, do nothing. */
740 if ((bfd_signed_vma
) (symaddr
- gp
) >= 0x200000
741 ||(bfd_signed_vma
) (symaddr
- gp
) < -0x200000)
744 if (r_type
== R_IA64_GPREL22
)
745 elfNN_ia64_update_short_info (tsec
->output_section
,
746 tsec
->output_offset
+ toff
,
748 else if (r_type
== R_IA64_LTOFF22X
)
750 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
752 changed_relocs
= TRUE
;
753 if (dyn_i
->want_gotx
)
755 dyn_i
->want_gotx
= 0;
756 changed_got
|= !dyn_i
->want_got
;
759 elfNN_ia64_update_short_info (tsec
->output_section
,
760 tsec
->output_offset
+ toff
,
765 ia64_elf_relax_ldxmov (contents
, roff
);
766 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
767 changed_contents
= TRUE
;
768 changed_relocs
= TRUE
;
773 /* ??? If we created fixups, this may push the code segment large
774 enough that the data segment moves, which will change the GP.
775 Reset the GP so that we re-calculate next round. We need to
776 do this at the _beginning_ of the next round; now will not do. */
778 /* Clean up and go home. */
781 struct one_fixup
*f
= fixups
;
782 fixups
= fixups
->next
;
787 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
789 if (! link_info
->keep_memory
)
793 /* Cache the symbols for elf_link_input_bfd. */
794 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
799 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
801 if (!changed_contents
&& !link_info
->keep_memory
)
805 /* Cache the section contents for elf_link_input_bfd. */
806 elf_section_data (sec
)->this_hdr
.contents
= contents
;
810 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
813 free (internal_relocs
);
815 elf_section_data (sec
)->relocs
= internal_relocs
;
820 struct elfNN_ia64_allocate_data data
;
821 data
.info
= link_info
;
823 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
825 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
826 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
827 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
828 ia64_info
->root
.sgot
->size
= data
.ofs
;
830 if (ia64_info
->root
.dynamic_sections_created
831 && ia64_info
->root
.srelgot
!= NULL
)
833 /* Resize .rela.got. */
834 ia64_info
->root
.srelgot
->size
= 0;
835 if (bfd_link_pic (link_info
)
836 && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
837 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
838 data
.only_got
= TRUE
;
839 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
,
844 if (link_info
->relax_pass
== 0)
846 /* Pass 0 is only needed to relax br. */
847 sec
->skip_relax_pass_0
= skip_relax_pass_0
;
848 sec
->skip_relax_pass_1
= skip_relax_pass_1
;
851 *again
= changed_contents
|| changed_relocs
;
855 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
858 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
860 if (internal_relocs
!= NULL
861 && elf_section_data (sec
)->relocs
!= internal_relocs
)
862 free (internal_relocs
);
865 #undef skip_relax_pass_0
866 #undef skip_relax_pass_1
868 /* Return TRUE if NAME is an unwind table section name. */
870 static inline bfd_boolean
871 is_unwind_section_name (bfd
*abfd
, const char *name
)
873 if (elfNN_ia64_hpux_vec (abfd
->xvec
)
874 && !strcmp (name
, ELF_STRING_ia64_unwind_hdr
))
877 return ((CONST_STRNEQ (name
, ELF_STRING_ia64_unwind
)
878 && ! CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_info
))
879 || CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_once
));
882 /* Handle an IA-64 specific section when reading an object file. This
883 is called when bfd_section_from_shdr finds a section with an unknown
887 elfNN_ia64_section_from_shdr (bfd
*abfd
,
888 Elf_Internal_Shdr
*hdr
,
892 /* There ought to be a place to keep ELF backend specific flags, but
893 at the moment there isn't one. We just keep track of the
894 sections by their name, instead. Fortunately, the ABI gives
895 suggested names for all the MIPS specific sections, so we will
896 probably get away with this. */
897 switch (hdr
->sh_type
)
899 case SHT_IA_64_UNWIND
:
900 case SHT_IA_64_HP_OPT_ANOT
:
904 if (strcmp (name
, ELF_STRING_ia64_archext
) != 0)
912 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
918 /* Convert IA-64 specific section flags to bfd internal section flags. */
920 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
924 elfNN_ia64_section_flags (flagword
*flags
,
925 const Elf_Internal_Shdr
*hdr
)
927 if (hdr
->sh_flags
& SHF_IA_64_SHORT
)
928 *flags
|= SEC_SMALL_DATA
;
933 /* Set the correct type for an IA-64 ELF section. We do this by the
934 section name, which is a hack, but ought to work. */
937 elfNN_ia64_fake_sections (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
942 name
= bfd_get_section_name (abfd
, sec
);
944 if (is_unwind_section_name (abfd
, name
))
946 /* We don't have the sections numbered at this point, so sh_info
947 is set later, in elfNN_ia64_final_write_processing. */
948 hdr
->sh_type
= SHT_IA_64_UNWIND
;
949 hdr
->sh_flags
|= SHF_LINK_ORDER
;
951 else if (strcmp (name
, ELF_STRING_ia64_archext
) == 0)
952 hdr
->sh_type
= SHT_IA_64_EXT
;
953 else if (strcmp (name
, ".HP.opt_annot") == 0)
954 hdr
->sh_type
= SHT_IA_64_HP_OPT_ANOT
;
955 else if (strcmp (name
, ".reloc") == 0)
956 /* This is an ugly, but unfortunately necessary hack that is
957 needed when producing EFI binaries on IA-64. It tells
958 elf.c:elf_fake_sections() not to consider ".reloc" as a section
959 containing ELF relocation info. We need this hack in order to
960 be able to generate ELF binaries that can be translated into
961 EFI applications (which are essentially COFF objects). Those
962 files contain a COFF ".reloc" section inside an ELFNN object,
963 which would normally cause BFD to segfault because it would
964 attempt to interpret this section as containing relocation
965 entries for section "oc". With this hack enabled, ".reloc"
966 will be treated as a normal data section, which will avoid the
967 segfault. However, you won't be able to create an ELFNN binary
968 with a section named "oc" that needs relocations, but that's
969 the kind of ugly side-effects you get when detecting section
970 types based on their names... In practice, this limitation is
972 hdr
->sh_type
= SHT_PROGBITS
;
974 if (sec
->flags
& SEC_SMALL_DATA
)
975 hdr
->sh_flags
|= SHF_IA_64_SHORT
;
977 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
979 if (elfNN_ia64_hpux_vec (abfd
->xvec
) && (sec
->flags
& SHF_TLS
))
980 hdr
->sh_flags
|= SHF_IA_64_HP_TLS
;
985 /* The final processing done just before writing out an IA-64 ELF
989 elfNN_ia64_final_write_processing (bfd
*abfd
,
990 bfd_boolean linker ATTRIBUTE_UNUSED
)
992 Elf_Internal_Shdr
*hdr
;
995 for (s
= abfd
->sections
; s
; s
= s
->next
)
997 hdr
= &elf_section_data (s
)->this_hdr
;
998 switch (hdr
->sh_type
)
1000 case SHT_IA_64_UNWIND
:
1001 /* The IA-64 processor-specific ABI requires setting sh_link
1002 to the unwind section, whereas HP-UX requires sh_info to
1003 do so. For maximum compatibility, we'll set both for
1005 hdr
->sh_info
= hdr
->sh_link
;
1010 if (! elf_flags_init (abfd
))
1012 unsigned long flags
= 0;
1014 if (abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
)
1015 flags
|= EF_IA_64_BE
;
1016 if (bfd_get_mach (abfd
) == bfd_mach_ia64_elf64
)
1017 flags
|= EF_IA_64_ABI64
;
1019 elf_elfheader(abfd
)->e_flags
= flags
;
1020 elf_flags_init (abfd
) = TRUE
;
1024 /* Hook called by the linker routine which adds symbols from an object
1025 file. We use it to put .comm items in .sbss, and not .bss. */
1028 elfNN_ia64_add_symbol_hook (bfd
*abfd
,
1029 struct bfd_link_info
*info
,
1030 Elf_Internal_Sym
*sym
,
1031 const char **namep ATTRIBUTE_UNUSED
,
1032 flagword
*flagsp ATTRIBUTE_UNUSED
,
1036 if (sym
->st_shndx
== SHN_COMMON
1037 && !bfd_link_relocatable (info
)
1038 && sym
->st_size
<= elf_gp_size (abfd
))
1040 /* Common symbols less than or equal to -G nn bytes are
1041 automatically put into .sbss. */
1043 asection
*scomm
= bfd_get_section_by_name (abfd
, ".scommon");
1047 scomm
= bfd_make_section_with_flags (abfd
, ".scommon",
1050 | SEC_LINKER_CREATED
));
1056 *valp
= sym
->st_size
;
1062 /* Return the number of additional phdrs we will need. */
1065 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1066 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1071 /* See if we need a PT_IA_64_ARCHEXT segment. */
1072 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1073 if (s
&& (s
->flags
& SEC_LOAD
))
1076 /* Count how many PT_IA_64_UNWIND segments we need. */
1077 for (s
= abfd
->sections
; s
; s
= s
->next
)
1078 if (is_unwind_section_name (abfd
, s
->name
) && (s
->flags
& SEC_LOAD
))
1085 elfNN_ia64_modify_segment_map (bfd
*abfd
,
1086 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1088 struct elf_segment_map
*m
, **pm
;
1089 Elf_Internal_Shdr
*hdr
;
1092 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1093 all PT_LOAD segments. */
1094 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1095 if (s
&& (s
->flags
& SEC_LOAD
))
1097 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1098 if (m
->p_type
== PT_IA_64_ARCHEXT
)
1102 m
= ((struct elf_segment_map
*)
1103 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1107 m
->p_type
= PT_IA_64_ARCHEXT
;
1111 /* We want to put it after the PHDR and INTERP segments. */
1112 pm
= &elf_seg_map (abfd
);
1114 && ((*pm
)->p_type
== PT_PHDR
1115 || (*pm
)->p_type
== PT_INTERP
))
1123 /* Install PT_IA_64_UNWIND segments, if needed. */
1124 for (s
= abfd
->sections
; s
; s
= s
->next
)
1126 hdr
= &elf_section_data (s
)->this_hdr
;
1127 if (hdr
->sh_type
!= SHT_IA_64_UNWIND
)
1130 if (s
&& (s
->flags
& SEC_LOAD
))
1132 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1133 if (m
->p_type
== PT_IA_64_UNWIND
)
1137 /* Look through all sections in the unwind segment
1138 for a match since there may be multiple sections
1140 for (i
= m
->count
- 1; i
>= 0; --i
)
1141 if (m
->sections
[i
] == s
)
1150 m
= ((struct elf_segment_map
*)
1151 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1155 m
->p_type
= PT_IA_64_UNWIND
;
1160 /* We want to put it last. */
1161 pm
= &elf_seg_map (abfd
);
1172 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1173 the input sections for each output section in the segment and testing
1174 for SHF_IA_64_NORECOV on each. */
1177 elfNN_ia64_modify_program_headers (bfd
*abfd
,
1178 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1180 struct elf_obj_tdata
*tdata
= elf_tdata (abfd
);
1181 struct elf_segment_map
*m
;
1182 Elf_Internal_Phdr
*p
;
1184 for (p
= tdata
->phdr
, m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
, p
++)
1185 if (m
->p_type
== PT_LOAD
)
1188 for (i
= m
->count
- 1; i
>= 0; --i
)
1190 struct bfd_link_order
*order
= m
->sections
[i
]->map_head
.link_order
;
1192 while (order
!= NULL
)
1194 if (order
->type
== bfd_indirect_link_order
)
1196 asection
*is
= order
->u
.indirect
.section
;
1197 bfd_vma flags
= elf_section_data(is
)->this_hdr
.sh_flags
;
1198 if (flags
& SHF_IA_64_NORECOV
)
1200 p
->p_flags
|= PF_IA_64_NORECOV
;
1204 order
= order
->next
;
1213 /* According to the Tahoe assembler spec, all labels starting with a
1217 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1220 return name
[0] == '.';
1223 /* Should we do dynamic things to this symbol? */
1226 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry
*h
,
1227 struct bfd_link_info
*info
, int r_type
)
1229 bfd_boolean ignore_protected
1230 = ((r_type
& 0xf8) == 0x40 /* FPTR relocs */
1231 || (r_type
& 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1233 return _bfd_elf_dynamic_symbol_p (h
, info
, ignore_protected
);
1236 static struct bfd_hash_entry
*
1237 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry
*entry
,
1238 struct bfd_hash_table
*table
,
1241 struct elfNN_ia64_link_hash_entry
*ret
;
1242 ret
= (struct elfNN_ia64_link_hash_entry
*) entry
;
1244 /* Allocate the structure if it has not already been allocated by a
1247 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
1252 /* Call the allocation method of the superclass. */
1253 ret
= ((struct elfNN_ia64_link_hash_entry
*)
1254 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1259 ret
->sorted_count
= 0;
1261 return (struct bfd_hash_entry
*) ret
;
1265 elfNN_ia64_hash_copy_indirect (struct bfd_link_info
*info
,
1266 struct elf_link_hash_entry
*xdir
,
1267 struct elf_link_hash_entry
*xind
)
1269 struct elfNN_ia64_link_hash_entry
*dir
, *ind
;
1271 dir
= (struct elfNN_ia64_link_hash_entry
*) xdir
;
1272 ind
= (struct elfNN_ia64_link_hash_entry
*) xind
;
1274 /* Copy down any references that we may have already seen to the
1275 symbol which just became indirect. */
1277 dir
->root
.ref_dynamic
|= ind
->root
.ref_dynamic
;
1278 dir
->root
.ref_regular
|= ind
->root
.ref_regular
;
1279 dir
->root
.ref_regular_nonweak
|= ind
->root
.ref_regular_nonweak
;
1280 dir
->root
.needs_plt
|= ind
->root
.needs_plt
;
1282 if (ind
->root
.root
.type
!= bfd_link_hash_indirect
)
1285 /* Copy over the got and plt data. This would have been done
1288 if (ind
->info
!= NULL
)
1290 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1296 dir
->info
= ind
->info
;
1297 dir
->count
= ind
->count
;
1298 dir
->sorted_count
= ind
->sorted_count
;
1299 dir
->size
= ind
->size
;
1303 ind
->sorted_count
= 0;
1306 /* Fix up the dyn_sym_info pointers to the global symbol. */
1307 for (count
= dir
->count
, dyn_i
= dir
->info
;
1310 dyn_i
->h
= &dir
->root
;
1313 /* Copy over the dynindx. */
1315 if (ind
->root
.dynindx
!= -1)
1317 if (dir
->root
.dynindx
!= -1)
1318 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1319 dir
->root
.dynstr_index
);
1320 dir
->root
.dynindx
= ind
->root
.dynindx
;
1321 dir
->root
.dynstr_index
= ind
->root
.dynstr_index
;
1322 ind
->root
.dynindx
= -1;
1323 ind
->root
.dynstr_index
= 0;
1328 elfNN_ia64_hash_hide_symbol (struct bfd_link_info
*info
,
1329 struct elf_link_hash_entry
*xh
,
1330 bfd_boolean force_local
)
1332 struct elfNN_ia64_link_hash_entry
*h
;
1333 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1336 h
= (struct elfNN_ia64_link_hash_entry
*)xh
;
1338 _bfd_elf_link_hash_hide_symbol (info
, &h
->root
, force_local
);
1340 for (count
= h
->count
, dyn_i
= h
->info
;
1344 dyn_i
->want_plt2
= 0;
1345 dyn_i
->want_plt
= 0;
1349 /* Compute a hash of a local hash entry. */
1352 elfNN_ia64_local_htab_hash (const void *ptr
)
1354 struct elfNN_ia64_local_hash_entry
*entry
1355 = (struct elfNN_ia64_local_hash_entry
*) ptr
;
1357 return ELF_LOCAL_SYMBOL_HASH (entry
->id
, entry
->r_sym
);
1360 /* Compare local hash entries. */
1363 elfNN_ia64_local_htab_eq (const void *ptr1
, const void *ptr2
)
1365 struct elfNN_ia64_local_hash_entry
*entry1
1366 = (struct elfNN_ia64_local_hash_entry
*) ptr1
;
1367 struct elfNN_ia64_local_hash_entry
*entry2
1368 = (struct elfNN_ia64_local_hash_entry
*) ptr2
;
1370 return entry1
->id
== entry2
->id
&& entry1
->r_sym
== entry2
->r_sym
;
1373 /* Free the global elfNN_ia64_dyn_sym_info array. */
1376 elfNN_ia64_global_dyn_info_free (void **xentry
,
1377 void * unused ATTRIBUTE_UNUSED
)
1379 struct elfNN_ia64_link_hash_entry
*entry
1380 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1387 entry
->sorted_count
= 0;
1394 /* Free the local elfNN_ia64_dyn_sym_info array. */
1397 elfNN_ia64_local_dyn_info_free (void **slot
,
1398 void * unused ATTRIBUTE_UNUSED
)
1400 struct elfNN_ia64_local_hash_entry
*entry
1401 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1408 entry
->sorted_count
= 0;
1415 /* Destroy IA-64 linker hash table. */
1418 elfNN_ia64_link_hash_table_free (bfd
*obfd
)
1420 struct elfNN_ia64_link_hash_table
*ia64_info
1421 = (struct elfNN_ia64_link_hash_table
*) obfd
->link
.hash
;
1422 if (ia64_info
->loc_hash_table
)
1424 htab_traverse (ia64_info
->loc_hash_table
,
1425 elfNN_ia64_local_dyn_info_free
, NULL
);
1426 htab_delete (ia64_info
->loc_hash_table
);
1428 if (ia64_info
->loc_hash_memory
)
1429 objalloc_free ((struct objalloc
*) ia64_info
->loc_hash_memory
);
1430 elf_link_hash_traverse (&ia64_info
->root
,
1431 elfNN_ia64_global_dyn_info_free
, NULL
);
1432 _bfd_elf_link_hash_table_free (obfd
);
1435 /* Create the derived linker hash table. The IA-64 ELF port uses this
1436 derived hash table to keep information specific to the IA-64 ElF
1437 linker (without using static variables). */
1439 static struct bfd_link_hash_table
*
1440 elfNN_ia64_hash_table_create (bfd
*abfd
)
1442 struct elfNN_ia64_link_hash_table
*ret
;
1444 ret
= bfd_zmalloc ((bfd_size_type
) sizeof (*ret
));
1448 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1449 elfNN_ia64_new_elf_hash_entry
,
1450 sizeof (struct elfNN_ia64_link_hash_entry
),
1457 ret
->loc_hash_table
= htab_try_create (1024, elfNN_ia64_local_htab_hash
,
1458 elfNN_ia64_local_htab_eq
, NULL
);
1459 ret
->loc_hash_memory
= objalloc_create ();
1460 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
1462 elfNN_ia64_link_hash_table_free (abfd
);
1465 ret
->root
.root
.hash_table_free
= elfNN_ia64_link_hash_table_free
;
1467 return &ret
->root
.root
;
1470 /* Traverse both local and global hash tables. */
1472 struct elfNN_ia64_dyn_sym_traverse_data
1474 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *);
1479 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry
*xentry
,
1482 struct elfNN_ia64_link_hash_entry
*entry
1483 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1484 struct elfNN_ia64_dyn_sym_traverse_data
*data
1485 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1486 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1489 for (count
= entry
->count
, dyn_i
= entry
->info
;
1492 if (! (*data
->func
) (dyn_i
, data
->data
))
1498 elfNN_ia64_local_dyn_sym_thunk (void **slot
, void * xdata
)
1500 struct elfNN_ia64_local_hash_entry
*entry
1501 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1502 struct elfNN_ia64_dyn_sym_traverse_data
*data
1503 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1504 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1507 for (count
= entry
->count
, dyn_i
= entry
->info
;
1510 if (! (*data
->func
) (dyn_i
, data
->data
))
1516 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table
*ia64_info
,
1517 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
1520 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
1525 elf_link_hash_traverse (&ia64_info
->root
,
1526 elfNN_ia64_global_dyn_sym_thunk
, &xdata
);
1527 htab_traverse (ia64_info
->loc_hash_table
,
1528 elfNN_ia64_local_dyn_sym_thunk
, &xdata
);
1532 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1533 struct bfd_link_info
*info
)
1535 struct elfNN_ia64_link_hash_table
*ia64_info
;
1538 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1541 ia64_info
= elfNN_ia64_hash_table (info
);
1542 if (ia64_info
== NULL
)
1546 flagword flags
= bfd_get_section_flags (abfd
, ia64_info
->root
.sgot
);
1547 bfd_set_section_flags (abfd
, ia64_info
->root
.sgot
,
1548 SEC_SMALL_DATA
| flags
);
1549 /* The .got section is always aligned at 8 bytes. */
1550 if (! bfd_set_section_alignment (abfd
, ia64_info
->root
.sgot
, 3))
1554 if (!get_pltoff (abfd
, info
, ia64_info
))
1557 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1558 (SEC_ALLOC
| SEC_LOAD
1561 | SEC_LINKER_CREATED
1564 || !bfd_set_section_alignment (abfd
, s
, LOG_SECTION_ALIGN
))
1566 ia64_info
->rel_pltoff_sec
= s
;
1571 /* Find and/or create a hash entry for local symbol. */
1572 static struct elfNN_ia64_local_hash_entry
*
1573 get_local_sym_hash (struct elfNN_ia64_link_hash_table
*ia64_info
,
1574 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
1577 struct elfNN_ia64_local_hash_entry e
, *ret
;
1578 asection
*sec
= abfd
->sections
;
1579 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
1580 ELFNN_R_SYM (rel
->r_info
));
1584 e
.r_sym
= ELFNN_R_SYM (rel
->r_info
);
1585 slot
= htab_find_slot_with_hash (ia64_info
->loc_hash_table
, &e
, h
,
1586 create
? INSERT
: NO_INSERT
);
1592 return (struct elfNN_ia64_local_hash_entry
*) *slot
;
1594 ret
= (struct elfNN_ia64_local_hash_entry
*)
1595 objalloc_alloc ((struct objalloc
*) ia64_info
->loc_hash_memory
,
1596 sizeof (struct elfNN_ia64_local_hash_entry
));
1599 memset (ret
, 0, sizeof (*ret
));
1601 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1607 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1610 addend_compare (const void *xp
, const void *yp
)
1612 const struct elfNN_ia64_dyn_sym_info
*x
1613 = (const struct elfNN_ia64_dyn_sym_info
*) xp
;
1614 const struct elfNN_ia64_dyn_sym_info
*y
1615 = (const struct elfNN_ia64_dyn_sym_info
*) yp
;
1617 return x
->addend
< y
->addend
? -1 : x
->addend
> y
->addend
? 1 : 0;
1620 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1623 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
1626 bfd_vma curr
, prev
, got_offset
;
1627 unsigned int i
, kept
, dupes
, diff
, dest
, src
, len
;
1629 qsort (info
, count
, sizeof (*info
), addend_compare
);
1631 /* Find the first duplicate. */
1632 prev
= info
[0].addend
;
1633 got_offset
= info
[0].got_offset
;
1634 for (i
= 1; i
< count
; i
++)
1636 curr
= info
[i
].addend
;
1639 /* For duplicates, make sure that GOT_OFFSET is valid. */
1640 if (got_offset
== (bfd_vma
) -1)
1641 got_offset
= info
[i
].got_offset
;
1644 got_offset
= info
[i
].got_offset
;
1648 /* We may move a block of elements to here. */
1651 /* Remove duplicates. */
1656 /* For duplicates, make sure that the kept one has a valid
1659 if (got_offset
!= (bfd_vma
) -1)
1660 info
[kept
].got_offset
= got_offset
;
1662 curr
= info
[i
].addend
;
1663 got_offset
= info
[i
].got_offset
;
1665 /* Move a block of elements whose first one is different from
1669 for (src
= i
+ 1; src
< count
; src
++)
1671 if (info
[src
].addend
!= curr
)
1673 /* For duplicates, make sure that GOT_OFFSET is
1675 if (got_offset
== (bfd_vma
) -1)
1676 got_offset
= info
[src
].got_offset
;
1679 /* Make sure that the kept one has a valid got_offset. */
1680 if (got_offset
!= (bfd_vma
) -1)
1681 info
[kept
].got_offset
= got_offset
;
1689 /* Find the next duplicate. SRC will be kept. */
1690 prev
= info
[src
].addend
;
1691 got_offset
= info
[src
].got_offset
;
1692 for (dupes
= src
+ 1; dupes
< count
; dupes
++)
1694 curr
= info
[dupes
].addend
;
1697 /* Make sure that got_offset is valid. */
1698 if (got_offset
== (bfd_vma
) -1)
1699 got_offset
= info
[dupes
].got_offset
;
1701 /* For duplicates, make sure that the kept one has
1702 a valid got_offset. */
1703 if (got_offset
!= (bfd_vma
) -1)
1704 info
[dupes
- 1].got_offset
= got_offset
;
1707 got_offset
= info
[dupes
].got_offset
;
1711 /* How much to move. */
1715 if (len
== 1 && dupes
< count
)
1717 /* If we only move 1 element, we combine it with the next
1718 one. There must be at least a duplicate. Find the
1719 next different one. */
1720 for (diff
= dupes
+ 1, src
++; diff
< count
; diff
++, src
++)
1722 if (info
[diff
].addend
!= curr
)
1724 /* Make sure that got_offset is valid. */
1725 if (got_offset
== (bfd_vma
) -1)
1726 got_offset
= info
[diff
].got_offset
;
1729 /* Makre sure that the last duplicated one has an valid
1731 BFD_ASSERT (curr
== prev
);
1732 if (got_offset
!= (bfd_vma
) -1)
1733 info
[diff
- 1].got_offset
= got_offset
;
1737 /* Find the next duplicate. Track the current valid
1739 prev
= info
[diff
].addend
;
1740 got_offset
= info
[diff
].got_offset
;
1741 for (dupes
= diff
+ 1; dupes
< count
; dupes
++)
1743 curr
= info
[dupes
].addend
;
1746 /* For duplicates, make sure that GOT_OFFSET
1748 if (got_offset
== (bfd_vma
) -1)
1749 got_offset
= info
[dupes
].got_offset
;
1752 got_offset
= info
[dupes
].got_offset
;
1757 len
= diff
- src
+ 1;
1762 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1771 /* When we get here, either there is no duplicate at all or
1772 the only duplicate is the last element. */
1775 /* If the last element is a duplicate, make sure that the
1776 kept one has a valid got_offset. We also update count. */
1777 if (got_offset
!= (bfd_vma
) -1)
1778 info
[dest
- 1].got_offset
= got_offset
;
1786 /* Find and/or create a descriptor for dynamic symbol info. This will
1787 vary based on global or local symbol, and the addend to the reloc.
1789 We don't sort when inserting. Also, we sort and eliminate
1790 duplicates if there is an unsorted section. Typically, this will
1791 only happen once, because we do all insertions before lookups. We
1792 then use bsearch to do a lookup. This also allows lookups to be
1793 fast. So we have fast insertion (O(log N) due to duplicate check),
1794 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1795 Previously, all lookups were O(N) because of the use of the linked
1796 list and also all insertions were O(N) because of the check for
1797 duplicates. There are some complications here because the array
1798 size grows occasionally, which may add an O(N) factor, but this
1799 should be rare. Also, we free the excess array allocation, which
1800 requires a copy which is O(N), but this only happens once. */
1802 static struct elfNN_ia64_dyn_sym_info
*
1803 get_dyn_sym_info (struct elfNN_ia64_link_hash_table
*ia64_info
,
1804 struct elf_link_hash_entry
*h
, bfd
*abfd
,
1805 const Elf_Internal_Rela
*rel
, bfd_boolean create
)
1807 struct elfNN_ia64_dyn_sym_info
**info_p
, *info
, *dyn_i
, key
;
1808 unsigned int *count_p
, *sorted_count_p
, *size_p
;
1809 unsigned int count
, sorted_count
, size
;
1810 bfd_vma addend
= rel
? rel
->r_addend
: 0;
1815 struct elfNN_ia64_link_hash_entry
*global_h
;
1817 global_h
= (struct elfNN_ia64_link_hash_entry
*) h
;
1818 info_p
= &global_h
->info
;
1819 count_p
= &global_h
->count
;
1820 sorted_count_p
= &global_h
->sorted_count
;
1821 size_p
= &global_h
->size
;
1825 struct elfNN_ia64_local_hash_entry
*loc_h
;
1827 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1830 BFD_ASSERT (!create
);
1834 info_p
= &loc_h
->info
;
1835 count_p
= &loc_h
->count
;
1836 sorted_count_p
= &loc_h
->sorted_count
;
1837 size_p
= &loc_h
->size
;
1841 sorted_count
= *sorted_count_p
;
1846 /* When we create the array, we don't check for duplicates,
1847 except in the previously sorted section if one exists, and
1848 against the last inserted entry. This allows insertions to
1854 /* Try bsearch first on the sorted section. */
1855 key
.addend
= addend
;
1856 dyn_i
= bsearch (&key
, info
, sorted_count
,
1857 sizeof (*info
), addend_compare
);
1865 /* Do a quick check for the last inserted entry. */
1866 dyn_i
= info
+ count
- 1;
1867 if (dyn_i
->addend
== addend
)
1875 /* It is the very first element. We create the array of size
1878 amt
= size
* sizeof (*info
);
1879 info
= bfd_malloc (amt
);
1881 else if (size
<= count
)
1883 /* We double the array size every time when we reach the
1886 amt
= size
* sizeof (*info
);
1887 info
= bfd_realloc (info
, amt
);
1898 /* Append the new one to the array. */
1899 dyn_i
= info
+ count
;
1900 memset (dyn_i
, 0, sizeof (*dyn_i
));
1901 dyn_i
->got_offset
= (bfd_vma
) -1;
1902 dyn_i
->addend
= addend
;
1904 /* We increment count only since the new ones are unsorted and
1905 may have duplicate. */
1910 /* It is a lookup without insertion. Sort array if part of the
1911 array isn't sorted. */
1912 if (count
!= sorted_count
)
1914 count
= sort_dyn_sym_info (info
, count
);
1916 *sorted_count_p
= count
;
1919 /* Free unused memory. */
1922 amt
= count
* sizeof (*info
);
1923 info
= bfd_malloc (amt
);
1926 memcpy (info
, *info_p
, amt
);
1933 key
.addend
= addend
;
1934 dyn_i
= bsearch (&key
, info
, count
,
1935 sizeof (*info
), addend_compare
);
1942 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1943 struct elfNN_ia64_link_hash_table
*ia64_info
)
1948 got
= ia64_info
->root
.sgot
;
1953 dynobj
= ia64_info
->root
.dynobj
;
1955 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1956 if (!_bfd_elf_create_got_section (dynobj
, info
))
1959 got
= ia64_info
->root
.sgot
;
1961 /* The .got section is always aligned at 8 bytes. */
1962 if (!bfd_set_section_alignment (abfd
, got
, 3))
1965 flags
= bfd_get_section_flags (abfd
, got
);
1966 if (! bfd_set_section_flags (abfd
, got
, SEC_SMALL_DATA
| flags
))
1973 /* Create function descriptor section (.opd). This section is called .opd
1974 because it contains "official procedure descriptors". The "official"
1975 refers to the fact that these descriptors are used when taking the address
1976 of a procedure, thus ensuring a unique address for each procedure. */
1979 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1980 struct elfNN_ia64_link_hash_table
*ia64_info
)
1985 fptr
= ia64_info
->fptr_sec
;
1988 dynobj
= ia64_info
->root
.dynobj
;
1990 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1992 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
1997 | (bfd_link_pie (info
)
1999 | SEC_LINKER_CREATED
));
2001 || !bfd_set_section_alignment (abfd
, fptr
, 4))
2007 ia64_info
->fptr_sec
= fptr
;
2009 if (bfd_link_pie (info
))
2012 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2013 (SEC_ALLOC
| SEC_LOAD
2016 | SEC_LINKER_CREATED
2018 if (fptr_rel
== NULL
2019 || !bfd_set_section_alignment (abfd
, fptr_rel
,
2026 ia64_info
->rel_fptr_sec
= fptr_rel
;
2034 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2035 struct elfNN_ia64_link_hash_table
*ia64_info
)
2040 pltoff
= ia64_info
->pltoff_sec
;
2043 dynobj
= ia64_info
->root
.dynobj
;
2045 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2047 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2048 ELF_STRING_ia64_pltoff
,
2054 | SEC_LINKER_CREATED
));
2056 || !bfd_set_section_alignment (abfd
, pltoff
, 4))
2062 ia64_info
->pltoff_sec
= pltoff
;
2069 get_reloc_section (bfd
*abfd
,
2070 struct elfNN_ia64_link_hash_table
*ia64_info
,
2071 asection
*sec
, bfd_boolean create
)
2073 const char *srel_name
;
2077 srel_name
= (bfd_elf_string_from_elf_section
2078 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
2079 _bfd_elf_single_rel_hdr (sec
)->sh_name
));
2080 if (srel_name
== NULL
)
2083 dynobj
= ia64_info
->root
.dynobj
;
2085 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2087 srel
= bfd_get_linker_section (dynobj
, srel_name
);
2088 if (srel
== NULL
&& create
)
2090 srel
= bfd_make_section_anyway_with_flags (dynobj
, srel_name
,
2091 (SEC_ALLOC
| SEC_LOAD
2094 | SEC_LINKER_CREATED
2097 || !bfd_set_section_alignment (dynobj
, srel
,
2106 count_dyn_reloc (bfd
*abfd
, struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2107 asection
*srel
, int type
, bfd_boolean reltext
)
2109 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2111 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2112 if (rent
->srel
== srel
&& rent
->type
== type
)
2117 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2118 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2122 rent
->next
= dyn_i
->reloc_entries
;
2126 dyn_i
->reloc_entries
= rent
;
2128 rent
->reltext
= reltext
;
2135 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2137 const Elf_Internal_Rela
*relocs
)
2139 struct elfNN_ia64_link_hash_table
*ia64_info
;
2140 const Elf_Internal_Rela
*relend
;
2141 Elf_Internal_Shdr
*symtab_hdr
;
2142 const Elf_Internal_Rela
*rel
;
2143 asection
*got
, *fptr
, *srel
, *pltoff
;
2152 NEED_LTOFF_FPTR
= 128,
2158 struct elf_link_hash_entry
*h
;
2159 unsigned long r_symndx
;
2160 bfd_boolean maybe_dynamic
;
2162 if (bfd_link_relocatable (info
))
2165 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2166 ia64_info
= elfNN_ia64_hash_table (info
);
2167 if (ia64_info
== NULL
)
2170 got
= fptr
= srel
= pltoff
= NULL
;
2172 relend
= relocs
+ sec
->reloc_count
;
2174 /* We scan relocations first to create dynamic relocation arrays. We
2175 modified get_dyn_sym_info to allow fast insertion and support fast
2176 lookup in the next loop. */
2177 for (rel
= relocs
; rel
< relend
; ++rel
)
2179 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2180 if (r_symndx
>= symtab_hdr
->sh_info
)
2182 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2183 h
= elf_sym_hashes (abfd
)[indx
];
2184 while (h
->root
.type
== bfd_link_hash_indirect
2185 || h
->root
.type
== bfd_link_hash_warning
)
2186 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2191 /* We can only get preliminary data on whether a symbol is
2192 locally or externally defined, as not all of the input files
2193 have yet been processed. Do something with what we know, as
2194 this may help reduce memory usage and processing time later. */
2195 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2196 && (!SYMBOLIC_BIND (info
, h
)
2197 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2199 || h
->root
.type
== bfd_link_hash_defweak
));
2202 switch (ELFNN_R_TYPE (rel
->r_info
))
2204 case R_IA64_TPREL64MSB
:
2205 case R_IA64_TPREL64LSB
:
2206 if (bfd_link_pic (info
) || maybe_dynamic
)
2207 need_entry
= NEED_DYNREL
;
2210 case R_IA64_LTOFF_TPREL22
:
2211 need_entry
= NEED_TPREL
;
2212 if (bfd_link_pic (info
))
2213 info
->flags
|= DF_STATIC_TLS
;
2216 case R_IA64_DTPREL32MSB
:
2217 case R_IA64_DTPREL32LSB
:
2218 case R_IA64_DTPREL64MSB
:
2219 case R_IA64_DTPREL64LSB
:
2220 if (bfd_link_pic (info
) || maybe_dynamic
)
2221 need_entry
= NEED_DYNREL
;
2224 case R_IA64_LTOFF_DTPREL22
:
2225 need_entry
= NEED_DTPREL
;
2228 case R_IA64_DTPMOD64MSB
:
2229 case R_IA64_DTPMOD64LSB
:
2230 if (bfd_link_pic (info
) || maybe_dynamic
)
2231 need_entry
= NEED_DYNREL
;
2234 case R_IA64_LTOFF_DTPMOD22
:
2235 need_entry
= NEED_DTPMOD
;
2238 case R_IA64_LTOFF_FPTR22
:
2239 case R_IA64_LTOFF_FPTR64I
:
2240 case R_IA64_LTOFF_FPTR32MSB
:
2241 case R_IA64_LTOFF_FPTR32LSB
:
2242 case R_IA64_LTOFF_FPTR64MSB
:
2243 case R_IA64_LTOFF_FPTR64LSB
:
2244 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2247 case R_IA64_FPTR64I
:
2248 case R_IA64_FPTR32MSB
:
2249 case R_IA64_FPTR32LSB
:
2250 case R_IA64_FPTR64MSB
:
2251 case R_IA64_FPTR64LSB
:
2252 if (bfd_link_pic (info
) || h
)
2253 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2255 need_entry
= NEED_FPTR
;
2258 case R_IA64_LTOFF22
:
2259 case R_IA64_LTOFF64I
:
2260 need_entry
= NEED_GOT
;
2263 case R_IA64_LTOFF22X
:
2264 need_entry
= NEED_GOTX
;
2267 case R_IA64_PLTOFF22
:
2268 case R_IA64_PLTOFF64I
:
2269 case R_IA64_PLTOFF64MSB
:
2270 case R_IA64_PLTOFF64LSB
:
2271 need_entry
= NEED_PLTOFF
;
2275 need_entry
|= NEED_MIN_PLT
;
2279 (*info
->callbacks
->warning
)
2280 (info
, _("@pltoff reloc against local symbol"), 0,
2281 abfd
, 0, (bfd_vma
) 0);
2285 case R_IA64_PCREL21B
:
2286 case R_IA64_PCREL60B
:
2287 /* Depending on where this symbol is defined, we may or may not
2288 need a full plt entry. Only skip if we know we'll not need
2289 the entry -- static or symbolic, and the symbol definition
2290 has already been seen. */
2291 if (maybe_dynamic
&& rel
->r_addend
== 0)
2292 need_entry
= NEED_FULL_PLT
;
2298 case R_IA64_DIR32MSB
:
2299 case R_IA64_DIR32LSB
:
2300 case R_IA64_DIR64MSB
:
2301 case R_IA64_DIR64LSB
:
2302 /* Shared objects will always need at least a REL relocation. */
2303 if (bfd_link_pic (info
) || maybe_dynamic
)
2304 need_entry
= NEED_DYNREL
;
2307 case R_IA64_IPLTMSB
:
2308 case R_IA64_IPLTLSB
:
2309 /* Shared objects will always need at least a REL relocation. */
2310 if (bfd_link_pic (info
) || maybe_dynamic
)
2311 need_entry
= NEED_DYNREL
;
2314 case R_IA64_PCREL22
:
2315 case R_IA64_PCREL64I
:
2316 case R_IA64_PCREL32MSB
:
2317 case R_IA64_PCREL32LSB
:
2318 case R_IA64_PCREL64MSB
:
2319 case R_IA64_PCREL64LSB
:
2321 need_entry
= NEED_DYNREL
;
2328 if ((need_entry
& NEED_FPTR
) != 0
2331 (*info
->callbacks
->warning
)
2332 (info
, _("non-zero addend in @fptr reloc"), 0,
2333 abfd
, 0, (bfd_vma
) 0);
2336 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, TRUE
) == NULL
)
2340 /* Now, we only do lookup without insertion, which is very fast
2341 with the modified get_dyn_sym_info. */
2342 for (rel
= relocs
; rel
< relend
; ++rel
)
2344 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2345 int dynrel_type
= R_IA64_NONE
;
2347 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2348 if (r_symndx
>= symtab_hdr
->sh_info
)
2350 /* We're dealing with a global symbol -- find its hash entry
2351 and mark it as being referenced. */
2352 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2353 h
= elf_sym_hashes (abfd
)[indx
];
2354 while (h
->root
.type
== bfd_link_hash_indirect
2355 || h
->root
.type
== bfd_link_hash_warning
)
2356 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2358 /* PR15323, ref flags aren't set for references in the same
2360 h
->root
.non_ir_ref
= 1;
2366 /* We can only get preliminary data on whether a symbol is
2367 locally or externally defined, as not all of the input files
2368 have yet been processed. Do something with what we know, as
2369 this may help reduce memory usage and processing time later. */
2370 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2371 && (!SYMBOLIC_BIND (info
, h
)
2372 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2374 || h
->root
.type
== bfd_link_hash_defweak
));
2377 switch (ELFNN_R_TYPE (rel
->r_info
))
2379 case R_IA64_TPREL64MSB
:
2380 case R_IA64_TPREL64LSB
:
2381 if (bfd_link_pic (info
) || maybe_dynamic
)
2382 need_entry
= NEED_DYNREL
;
2383 dynrel_type
= R_IA64_TPREL64LSB
;
2384 if (bfd_link_pic (info
))
2385 info
->flags
|= DF_STATIC_TLS
;
2388 case R_IA64_LTOFF_TPREL22
:
2389 need_entry
= NEED_TPREL
;
2390 if (bfd_link_pic (info
))
2391 info
->flags
|= DF_STATIC_TLS
;
2394 case R_IA64_DTPREL32MSB
:
2395 case R_IA64_DTPREL32LSB
:
2396 case R_IA64_DTPREL64MSB
:
2397 case R_IA64_DTPREL64LSB
:
2398 if (bfd_link_pic (info
) || maybe_dynamic
)
2399 need_entry
= NEED_DYNREL
;
2400 dynrel_type
= R_IA64_DTPRELNNLSB
;
2403 case R_IA64_LTOFF_DTPREL22
:
2404 need_entry
= NEED_DTPREL
;
2407 case R_IA64_DTPMOD64MSB
:
2408 case R_IA64_DTPMOD64LSB
:
2409 if (bfd_link_pic (info
) || maybe_dynamic
)
2410 need_entry
= NEED_DYNREL
;
2411 dynrel_type
= R_IA64_DTPMOD64LSB
;
2414 case R_IA64_LTOFF_DTPMOD22
:
2415 need_entry
= NEED_DTPMOD
;
2418 case R_IA64_LTOFF_FPTR22
:
2419 case R_IA64_LTOFF_FPTR64I
:
2420 case R_IA64_LTOFF_FPTR32MSB
:
2421 case R_IA64_LTOFF_FPTR32LSB
:
2422 case R_IA64_LTOFF_FPTR64MSB
:
2423 case R_IA64_LTOFF_FPTR64LSB
:
2424 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2427 case R_IA64_FPTR64I
:
2428 case R_IA64_FPTR32MSB
:
2429 case R_IA64_FPTR32LSB
:
2430 case R_IA64_FPTR64MSB
:
2431 case R_IA64_FPTR64LSB
:
2432 if (bfd_link_pic (info
) || h
)
2433 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2435 need_entry
= NEED_FPTR
;
2436 dynrel_type
= R_IA64_FPTRNNLSB
;
2439 case R_IA64_LTOFF22
:
2440 case R_IA64_LTOFF64I
:
2441 need_entry
= NEED_GOT
;
2444 case R_IA64_LTOFF22X
:
2445 need_entry
= NEED_GOTX
;
2448 case R_IA64_PLTOFF22
:
2449 case R_IA64_PLTOFF64I
:
2450 case R_IA64_PLTOFF64MSB
:
2451 case R_IA64_PLTOFF64LSB
:
2452 need_entry
= NEED_PLTOFF
;
2456 need_entry
|= NEED_MIN_PLT
;
2460 case R_IA64_PCREL21B
:
2461 case R_IA64_PCREL60B
:
2462 /* Depending on where this symbol is defined, we may or may not
2463 need a full plt entry. Only skip if we know we'll not need
2464 the entry -- static or symbolic, and the symbol definition
2465 has already been seen. */
2466 if (maybe_dynamic
&& rel
->r_addend
== 0)
2467 need_entry
= NEED_FULL_PLT
;
2473 case R_IA64_DIR32MSB
:
2474 case R_IA64_DIR32LSB
:
2475 case R_IA64_DIR64MSB
:
2476 case R_IA64_DIR64LSB
:
2477 /* Shared objects will always need at least a REL relocation. */
2478 if (bfd_link_pic (info
) || maybe_dynamic
)
2479 need_entry
= NEED_DYNREL
;
2480 dynrel_type
= R_IA64_DIRNNLSB
;
2483 case R_IA64_IPLTMSB
:
2484 case R_IA64_IPLTLSB
:
2485 /* Shared objects will always need at least a REL relocation. */
2486 if (bfd_link_pic (info
) || maybe_dynamic
)
2487 need_entry
= NEED_DYNREL
;
2488 dynrel_type
= R_IA64_IPLTLSB
;
2491 case R_IA64_PCREL22
:
2492 case R_IA64_PCREL64I
:
2493 case R_IA64_PCREL32MSB
:
2494 case R_IA64_PCREL32LSB
:
2495 case R_IA64_PCREL64MSB
:
2496 case R_IA64_PCREL64LSB
:
2498 need_entry
= NEED_DYNREL
;
2499 dynrel_type
= R_IA64_PCRELNNLSB
;
2506 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, FALSE
);
2508 /* Record whether or not this is a local symbol. */
2511 /* Create what's needed. */
2512 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2513 | NEED_DTPMOD
| NEED_DTPREL
))
2517 got
= get_got (abfd
, info
, ia64_info
);
2521 if (need_entry
& NEED_GOT
)
2522 dyn_i
->want_got
= 1;
2523 if (need_entry
& NEED_GOTX
)
2524 dyn_i
->want_gotx
= 1;
2525 if (need_entry
& NEED_TPREL
)
2526 dyn_i
->want_tprel
= 1;
2527 if (need_entry
& NEED_DTPMOD
)
2528 dyn_i
->want_dtpmod
= 1;
2529 if (need_entry
& NEED_DTPREL
)
2530 dyn_i
->want_dtprel
= 1;
2532 if (need_entry
& NEED_FPTR
)
2536 fptr
= get_fptr (abfd
, info
, ia64_info
);
2541 /* FPTRs for shared libraries are allocated by the dynamic
2542 linker. Make sure this local symbol will appear in the
2543 dynamic symbol table. */
2544 if (!h
&& bfd_link_pic (info
))
2546 if (! (bfd_elf_link_record_local_dynamic_symbol
2547 (info
, abfd
, (long) r_symndx
)))
2551 dyn_i
->want_fptr
= 1;
2553 if (need_entry
& NEED_LTOFF_FPTR
)
2554 dyn_i
->want_ltoff_fptr
= 1;
2555 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2557 if (!ia64_info
->root
.dynobj
)
2558 ia64_info
->root
.dynobj
= abfd
;
2560 dyn_i
->want_plt
= 1;
2562 if (need_entry
& NEED_FULL_PLT
)
2563 dyn_i
->want_plt2
= 1;
2564 if (need_entry
& NEED_PLTOFF
)
2566 /* This is needed here, in case @pltoff is used in a non-shared
2570 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2575 dyn_i
->want_pltoff
= 1;
2577 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2581 srel
= get_reloc_section (abfd
, ia64_info
, sec
, TRUE
);
2585 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2586 (sec
->flags
& SEC_READONLY
) != 0))
2594 /* For cleanliness, and potentially faster dynamic loading, allocate
2595 external GOT entries first. */
2598 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2601 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2603 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2604 && ! dyn_i
->want_fptr
2605 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2607 dyn_i
->got_offset
= x
->ofs
;
2610 if (dyn_i
->want_tprel
)
2612 dyn_i
->tprel_offset
= x
->ofs
;
2615 if (dyn_i
->want_dtpmod
)
2617 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2619 dyn_i
->dtpmod_offset
= x
->ofs
;
2624 struct elfNN_ia64_link_hash_table
*ia64_info
;
2626 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2627 if (ia64_info
== NULL
)
2630 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2632 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2635 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2638 if (dyn_i
->want_dtprel
)
2640 dyn_i
->dtprel_offset
= x
->ofs
;
2646 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2649 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2652 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2656 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2658 dyn_i
->got_offset
= x
->ofs
;
2664 /* Lastly, allocate all the GOT entries for local data. */
2667 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2670 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2672 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2673 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2675 dyn_i
->got_offset
= x
->ofs
;
2681 /* Search for the index of a global symbol in it's defining object file. */
2684 global_sym_index (struct elf_link_hash_entry
*h
)
2686 struct elf_link_hash_entry
**p
;
2689 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2690 || h
->root
.type
== bfd_link_hash_defweak
);
2692 obj
= h
->root
.u
.def
.section
->owner
;
2693 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2696 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2699 /* Allocate function descriptors. We can do these for every function
2700 in a main executable that is not exported. */
2703 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2705 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2707 if (dyn_i
->want_fptr
)
2709 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2712 while (h
->root
.type
== bfd_link_hash_indirect
2713 || h
->root
.type
== bfd_link_hash_warning
)
2714 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2716 if (!bfd_link_executable (x
->info
)
2718 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2719 || (h
->root
.type
!= bfd_link_hash_undefweak
2720 && h
->root
.type
!= bfd_link_hash_undefined
)))
2722 if (h
&& h
->dynindx
== -1)
2724 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2725 || (h
->root
.type
== bfd_link_hash_defweak
));
2727 if (!bfd_elf_link_record_local_dynamic_symbol
2728 (x
->info
, h
->root
.u
.def
.section
->owner
,
2729 global_sym_index (h
)))
2733 dyn_i
->want_fptr
= 0;
2735 else if (h
== NULL
|| h
->dynindx
== -1)
2737 dyn_i
->fptr_offset
= x
->ofs
;
2741 dyn_i
->want_fptr
= 0;
2746 /* Allocate all the minimal PLT entries. */
2749 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2752 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2754 if (dyn_i
->want_plt
)
2756 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2759 while (h
->root
.type
== bfd_link_hash_indirect
2760 || h
->root
.type
== bfd_link_hash_warning
)
2761 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2763 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2764 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2766 bfd_size_type offset
= x
->ofs
;
2768 offset
= PLT_HEADER_SIZE
;
2769 dyn_i
->plt_offset
= offset
;
2770 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2772 dyn_i
->want_pltoff
= 1;
2776 dyn_i
->want_plt
= 0;
2777 dyn_i
->want_plt2
= 0;
2783 /* Allocate all the full PLT entries. */
2786 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2789 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2791 if (dyn_i
->want_plt2
)
2793 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2794 bfd_size_type ofs
= x
->ofs
;
2796 dyn_i
->plt2_offset
= ofs
;
2797 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2799 while (h
->root
.type
== bfd_link_hash_indirect
2800 || h
->root
.type
== bfd_link_hash_warning
)
2801 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2802 dyn_i
->h
->plt
.offset
= ofs
;
2807 /* Allocate all the PLTOFF entries requested by relocations and
2808 plt entries. We can't share space with allocated FPTR entries,
2809 because the latter are not necessarily addressable by the GP.
2810 ??? Relaxation might be able to determine that they are. */
2813 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2816 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2818 if (dyn_i
->want_pltoff
)
2820 dyn_i
->pltoff_offset
= x
->ofs
;
2826 /* Allocate dynamic relocations for those symbols that turned out
2830 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2833 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2834 struct elfNN_ia64_link_hash_table
*ia64_info
;
2835 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2836 bfd_boolean dynamic_symbol
, shared
, resolved_zero
;
2838 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2839 if (ia64_info
== NULL
)
2842 /* Note that this can't be used in relation to FPTR relocs below. */
2843 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2845 shared
= bfd_link_pic (x
->info
);
2846 resolved_zero
= (dyn_i
->h
2847 && ELF_ST_VISIBILITY (dyn_i
->h
->other
)
2848 && dyn_i
->h
->root
.type
== bfd_link_hash_undefweak
);
2850 /* Take care of the GOT and PLT relocations. */
2853 && (dynamic_symbol
|| shared
)
2854 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2855 || (dyn_i
->want_ltoff_fptr
2857 && dyn_i
->h
->dynindx
!= -1))
2859 if (!dyn_i
->want_ltoff_fptr
2860 || !bfd_link_pie (x
->info
)
2862 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2863 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2865 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2866 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2867 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2868 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2869 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2870 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2875 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2877 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2878 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2881 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2883 bfd_size_type t
= 0;
2885 /* Dynamic symbols get one IPLT relocation. Local symbols in
2886 shared libraries get two REL relocations. Local symbols in
2887 main applications get nothing. */
2889 t
= sizeof (ElfNN_External_Rela
);
2891 t
= 2 * sizeof (ElfNN_External_Rela
);
2893 ia64_info
->rel_pltoff_sec
->size
+= t
;
2896 /* Take care of the normal data relocations. */
2898 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2900 int count
= rent
->count
;
2904 case R_IA64_FPTR32LSB
:
2905 case R_IA64_FPTR64LSB
:
2906 /* Allocate one iff !want_fptr and not PIE, which by this point
2907 will be true only if we're actually allocating one statically
2908 in the main executable. Position independent executables
2909 need a relative reloc. */
2910 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2913 case R_IA64_PCREL32LSB
:
2914 case R_IA64_PCREL64LSB
:
2915 if (!dynamic_symbol
)
2918 case R_IA64_DIR32LSB
:
2919 case R_IA64_DIR64LSB
:
2920 if (!dynamic_symbol
&& !shared
)
2923 case R_IA64_IPLTLSB
:
2924 if (!dynamic_symbol
&& !shared
)
2926 /* Use two REL relocations for IPLT relocations
2927 against local symbols. */
2928 if (!dynamic_symbol
)
2931 case R_IA64_DTPREL32LSB
:
2932 case R_IA64_TPREL64LSB
:
2933 case R_IA64_DTPREL64LSB
:
2934 case R_IA64_DTPMOD64LSB
:
2940 ia64_info
->reltext
= 1;
2941 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2948 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2949 struct elf_link_hash_entry
*h
)
2951 /* ??? Undefined symbols with PLT entries should be re-defined
2952 to be the PLT entry. */
2954 /* If this is a weak symbol, and there is a real definition, the
2955 processor independent code will have arranged for us to see the
2956 real definition first, and we can just use the same value. */
2957 if (h
->u
.weakdef
!= NULL
)
2959 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2960 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2961 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2962 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2966 /* If this is a reference to a symbol defined by a dynamic object which
2967 is not a function, we might allocate the symbol in our .dynbss section
2968 and allocate a COPY dynamic relocation.
2970 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2977 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2978 struct bfd_link_info
*info
)
2980 struct elfNN_ia64_allocate_data data
;
2981 struct elfNN_ia64_link_hash_table
*ia64_info
;
2984 bfd_boolean relplt
= FALSE
;
2986 ia64_info
= elfNN_ia64_hash_table (info
);
2987 if (ia64_info
== NULL
)
2989 dynobj
= ia64_info
->root
.dynobj
;
2990 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
2991 BFD_ASSERT(dynobj
!= NULL
);
2994 /* Set the contents of the .interp section to the interpreter. */
2995 if (ia64_info
->root
.dynamic_sections_created
2996 && bfd_link_executable (info
) && !info
->nointerp
)
2998 sec
= bfd_get_linker_section (dynobj
, ".interp");
2999 BFD_ASSERT (sec
!= NULL
);
3000 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3001 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3004 /* Allocate the GOT entries. */
3006 if (ia64_info
->root
.sgot
)
3009 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3010 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3011 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3012 ia64_info
->root
.sgot
->size
= data
.ofs
;
3015 /* Allocate the FPTR entries. */
3017 if (ia64_info
->fptr_sec
)
3020 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3021 ia64_info
->fptr_sec
->size
= data
.ofs
;
3024 /* Now that we've seen all of the input files, we can decide which
3025 symbols need plt entries. Allocate the minimal PLT entries first.
3026 We do this even though dynamic_sections_created may be FALSE, because
3027 this has the side-effect of clearing want_plt and want_plt2. */
3030 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3032 ia64_info
->minplt_entries
= 0;
3035 ia64_info
->minplt_entries
3036 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3039 /* Align the pointer for the plt2 entries. */
3040 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3042 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3043 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3045 /* FIXME: we always reserve the memory for dynamic linker even if
3046 there are no PLT entries since dynamic linker may assume the
3047 reserved memory always exists. */
3049 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3051 ia64_info
->root
.splt
->size
= data
.ofs
;
3053 /* If we've got a .plt, we need some extra memory for the dynamic
3054 linker. We stuff these in .got.plt. */
3055 ia64_info
->root
.sgotplt
->size
= 8 * PLT_RESERVED_WORDS
;
3058 /* Allocate the PLTOFF entries. */
3060 if (ia64_info
->pltoff_sec
)
3063 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_pltoff_entries
, &data
);
3064 ia64_info
->pltoff_sec
->size
= data
.ofs
;
3067 if (ia64_info
->root
.dynamic_sections_created
)
3069 /* Allocate space for the dynamic relocations that turned out to be
3072 if (bfd_link_pic (info
) && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
3073 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
3074 data
.only_got
= FALSE
;
3075 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
, &data
);
3078 /* We have now determined the sizes of the various dynamic sections.
3079 Allocate memory for them. */
3080 for (sec
= dynobj
->sections
; sec
!= NULL
; sec
= sec
->next
)
3084 if (!(sec
->flags
& SEC_LINKER_CREATED
))
3087 /* If we don't need this section, strip it from the output file.
3088 There were several sections primarily related to dynamic
3089 linking that must be create before the linker maps input
3090 sections to output sections. The linker does that before
3091 bfd_elf_size_dynamic_sections is called, and it is that
3092 function which decides whether anything needs to go into
3095 strip
= (sec
->size
== 0);
3097 if (sec
== ia64_info
->root
.sgot
)
3099 else if (sec
== ia64_info
->root
.srelgot
)
3102 ia64_info
->root
.srelgot
= NULL
;
3104 /* We use the reloc_count field as a counter if we need to
3105 copy relocs into the output file. */
3106 sec
->reloc_count
= 0;
3108 else if (sec
== ia64_info
->fptr_sec
)
3111 ia64_info
->fptr_sec
= NULL
;
3113 else if (sec
== ia64_info
->rel_fptr_sec
)
3116 ia64_info
->rel_fptr_sec
= 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
->root
.splt
)
3125 ia64_info
->root
.splt
= NULL
;
3127 else if (sec
== ia64_info
->pltoff_sec
)
3130 ia64_info
->pltoff_sec
= NULL
;
3132 else if (sec
== ia64_info
->rel_pltoff_sec
)
3135 ia64_info
->rel_pltoff_sec
= NULL
;
3139 /* We use the reloc_count field as a counter if we need to
3140 copy relocs into the output file. */
3141 sec
->reloc_count
= 0;
3148 /* It's OK to base decisions on the section name, because none
3149 of the dynobj section names depend upon the input files. */
3150 name
= bfd_get_section_name (dynobj
, sec
);
3152 if (strcmp (name
, ".got.plt") == 0)
3154 else if (CONST_STRNEQ (name
, ".rel"))
3158 /* We use the reloc_count field as a counter if we need to
3159 copy relocs into the output file. */
3160 sec
->reloc_count
= 0;
3168 sec
->flags
|= SEC_EXCLUDE
;
3171 /* Allocate memory for the section contents. */
3172 sec
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, sec
->size
);
3173 if (sec
->contents
== NULL
&& sec
->size
!= 0)
3178 if (ia64_info
->root
.dynamic_sections_created
)
3180 /* Add some entries to the .dynamic section. We fill in the values
3181 later (in finish_dynamic_sections) but we must add the entries now
3182 so that we get the correct size for the .dynamic section. */
3184 if (bfd_link_executable (info
))
3186 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3188 #define add_dynamic_entry(TAG, VAL) \
3189 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3191 if (!add_dynamic_entry (DT_DEBUG
, 0))
3195 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE
, 0))
3197 if (!add_dynamic_entry (DT_PLTGOT
, 0))
3202 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
3203 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3204 || !add_dynamic_entry (DT_JMPREL
, 0))
3208 if (!add_dynamic_entry (DT_RELA
, 0)
3209 || !add_dynamic_entry (DT_RELASZ
, 0)
3210 || !add_dynamic_entry (DT_RELAENT
, sizeof (ElfNN_External_Rela
)))
3213 if (ia64_info
->reltext
)
3215 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3217 info
->flags
|= DF_TEXTREL
;
3221 /* ??? Perhaps force __gp local. */
3227 elfNN_ia64_install_dyn_reloc (bfd
*abfd
, struct bfd_link_info
*info
,
3228 asection
*sec
, asection
*srel
,
3229 bfd_vma offset
, unsigned int type
,
3230 long dynindx
, bfd_vma addend
)
3232 Elf_Internal_Rela outrel
;
3235 BFD_ASSERT (dynindx
!= -1);
3236 outrel
.r_info
= ELFNN_R_INFO (dynindx
, type
);
3237 outrel
.r_addend
= addend
;
3238 outrel
.r_offset
= _bfd_elf_section_offset (abfd
, info
, sec
, offset
);
3239 if (outrel
.r_offset
>= (bfd_vma
) -2)
3241 /* Run for the hills. We shouldn't be outputting a relocation
3242 for this. So do what everyone else does and output a no-op. */
3243 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
3244 outrel
.r_addend
= 0;
3245 outrel
.r_offset
= 0;
3248 outrel
.r_offset
+= sec
->output_section
->vma
+ sec
->output_offset
;
3250 loc
= srel
->contents
;
3251 loc
+= srel
->reloc_count
++ * sizeof (ElfNN_External_Rela
);
3252 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3253 BFD_ASSERT (sizeof (ElfNN_External_Rela
) * srel
->reloc_count
<= srel
->size
);
3256 /* Store an entry for target address TARGET_ADDR in the linkage table
3257 and return the gp-relative address of the linkage table entry. */
3260 set_got_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3261 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3262 long dynindx
, bfd_vma addend
, bfd_vma value
,
3263 unsigned int dyn_r_type
)
3265 struct elfNN_ia64_link_hash_table
*ia64_info
;
3270 ia64_info
= elfNN_ia64_hash_table (info
);
3271 if (ia64_info
== NULL
)
3274 got_sec
= ia64_info
->root
.sgot
;
3278 case R_IA64_TPREL64LSB
:
3279 done
= dyn_i
->tprel_done
;
3280 dyn_i
->tprel_done
= TRUE
;
3281 got_offset
= dyn_i
->tprel_offset
;
3283 case R_IA64_DTPMOD64LSB
:
3284 if (dyn_i
->dtpmod_offset
!= ia64_info
->self_dtpmod_offset
)
3286 done
= dyn_i
->dtpmod_done
;
3287 dyn_i
->dtpmod_done
= TRUE
;
3291 done
= ia64_info
->self_dtpmod_done
;
3292 ia64_info
->self_dtpmod_done
= TRUE
;
3295 got_offset
= dyn_i
->dtpmod_offset
;
3297 case R_IA64_DTPREL32LSB
:
3298 case R_IA64_DTPREL64LSB
:
3299 done
= dyn_i
->dtprel_done
;
3300 dyn_i
->dtprel_done
= TRUE
;
3301 got_offset
= dyn_i
->dtprel_offset
;
3304 done
= dyn_i
->got_done
;
3305 dyn_i
->got_done
= TRUE
;
3306 got_offset
= dyn_i
->got_offset
;
3310 BFD_ASSERT ((got_offset
& 7) == 0);
3314 /* Store the target address in the linkage table entry. */
3315 bfd_put_64 (abfd
, value
, got_sec
->contents
+ got_offset
);
3317 /* Install a dynamic relocation if needed. */
3318 if (((bfd_link_pic (info
)
3320 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3321 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
3322 && dyn_r_type
!= R_IA64_DTPREL32LSB
3323 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3324 || elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, info
, dyn_r_type
)
3326 && (dyn_r_type
== R_IA64_FPTR32LSB
3327 || dyn_r_type
== R_IA64_FPTR64LSB
)))
3328 && (!dyn_i
->want_ltoff_fptr
3329 || !bfd_link_pie (info
)
3331 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3334 && dyn_r_type
!= R_IA64_TPREL64LSB
3335 && dyn_r_type
!= R_IA64_DTPMOD64LSB
3336 && dyn_r_type
!= R_IA64_DTPREL32LSB
3337 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3339 dyn_r_type
= R_IA64_RELNNLSB
;
3344 if (bfd_big_endian (abfd
))
3348 case R_IA64_REL32LSB
:
3349 dyn_r_type
= R_IA64_REL32MSB
;
3351 case R_IA64_DIR32LSB
:
3352 dyn_r_type
= R_IA64_DIR32MSB
;
3354 case R_IA64_FPTR32LSB
:
3355 dyn_r_type
= R_IA64_FPTR32MSB
;
3357 case R_IA64_DTPREL32LSB
:
3358 dyn_r_type
= R_IA64_DTPREL32MSB
;
3360 case R_IA64_REL64LSB
:
3361 dyn_r_type
= R_IA64_REL64MSB
;
3363 case R_IA64_DIR64LSB
:
3364 dyn_r_type
= R_IA64_DIR64MSB
;
3366 case R_IA64_FPTR64LSB
:
3367 dyn_r_type
= R_IA64_FPTR64MSB
;
3369 case R_IA64_TPREL64LSB
:
3370 dyn_r_type
= R_IA64_TPREL64MSB
;
3372 case R_IA64_DTPMOD64LSB
:
3373 dyn_r_type
= R_IA64_DTPMOD64MSB
;
3375 case R_IA64_DTPREL64LSB
:
3376 dyn_r_type
= R_IA64_DTPREL64MSB
;
3384 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, got_sec
,
3385 ia64_info
->root
.srelgot
,
3386 got_offset
, dyn_r_type
,
3391 /* Return the address of the linkage table entry. */
3392 value
= (got_sec
->output_section
->vma
3393 + got_sec
->output_offset
3399 /* Fill in a function descriptor consisting of the function's code
3400 address and its global pointer. Return the descriptor's address. */
3403 set_fptr_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3404 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3407 struct elfNN_ia64_link_hash_table
*ia64_info
;
3410 ia64_info
= elfNN_ia64_hash_table (info
);
3411 if (ia64_info
== NULL
)
3414 fptr_sec
= ia64_info
->fptr_sec
;
3416 if (!dyn_i
->fptr_done
)
3418 dyn_i
->fptr_done
= 1;
3420 /* Fill in the function descriptor. */
3421 bfd_put_64 (abfd
, value
, fptr_sec
->contents
+ dyn_i
->fptr_offset
);
3422 bfd_put_64 (abfd
, _bfd_get_gp_value (abfd
),
3423 fptr_sec
->contents
+ dyn_i
->fptr_offset
+ 8);
3424 if (ia64_info
->rel_fptr_sec
)
3426 Elf_Internal_Rela outrel
;
3429 if (bfd_little_endian (abfd
))
3430 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTLSB
);
3432 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTMSB
);
3433 outrel
.r_addend
= value
;
3434 outrel
.r_offset
= (fptr_sec
->output_section
->vma
3435 + fptr_sec
->output_offset
3436 + dyn_i
->fptr_offset
);
3437 loc
= ia64_info
->rel_fptr_sec
->contents
;
3438 loc
+= ia64_info
->rel_fptr_sec
->reloc_count
++
3439 * sizeof (ElfNN_External_Rela
);
3440 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3444 /* Return the descriptor's address. */
3445 value
= (fptr_sec
->output_section
->vma
3446 + fptr_sec
->output_offset
3447 + dyn_i
->fptr_offset
);
3452 /* Fill in a PLTOFF entry consisting of the function's code address
3453 and its global pointer. Return the descriptor's address. */
3456 set_pltoff_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3457 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3458 bfd_vma value
, bfd_boolean is_plt
)
3460 struct elfNN_ia64_link_hash_table
*ia64_info
;
3461 asection
*pltoff_sec
;
3463 ia64_info
= elfNN_ia64_hash_table (info
);
3464 if (ia64_info
== NULL
)
3467 pltoff_sec
= ia64_info
->pltoff_sec
;
3469 /* Don't do anything if this symbol uses a real PLT entry. In
3470 that case, we'll fill this in during finish_dynamic_symbol. */
3471 if ((! dyn_i
->want_plt
|| is_plt
)
3472 && !dyn_i
->pltoff_done
)
3474 bfd_vma gp
= _bfd_get_gp_value (abfd
);
3476 /* Fill in the function descriptor. */
3477 bfd_put_64 (abfd
, value
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
);
3478 bfd_put_64 (abfd
, gp
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
+ 8);
3480 /* Install dynamic relocations if needed. */
3482 && bfd_link_pic (info
)
3484 || ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3485 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3487 unsigned int dyn_r_type
;
3489 if (bfd_big_endian (abfd
))
3490 dyn_r_type
= R_IA64_RELNNMSB
;
3492 dyn_r_type
= R_IA64_RELNNLSB
;
3494 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3495 ia64_info
->rel_pltoff_sec
,
3496 dyn_i
->pltoff_offset
,
3497 dyn_r_type
, 0, value
);
3498 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3499 ia64_info
->rel_pltoff_sec
,
3500 dyn_i
->pltoff_offset
+ ARCH_SIZE
/ 8,
3504 dyn_i
->pltoff_done
= 1;
3507 /* Return the descriptor's address. */
3508 value
= (pltoff_sec
->output_section
->vma
3509 + pltoff_sec
->output_offset
3510 + dyn_i
->pltoff_offset
);
3515 /* Return the base VMA address which should be subtracted from real addresses
3516 when resolving @tprel() relocation.
3517 Main program TLS (whose template starts at PT_TLS p_vaddr)
3518 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3521 elfNN_ia64_tprel_base (struct bfd_link_info
*info
)
3523 asection
*tls_sec
= elf_hash_table (info
)->tls_sec
;
3524 return tls_sec
->vma
- align_power ((bfd_vma
) ARCH_SIZE
/ 4,
3525 tls_sec
->alignment_power
);
3528 /* Return the base VMA address which should be subtracted from real addresses
3529 when resolving @dtprel() relocation.
3530 This is PT_TLS segment p_vaddr. */
3533 elfNN_ia64_dtprel_base (struct bfd_link_info
*info
)
3535 return elf_hash_table (info
)->tls_sec
->vma
;
3538 /* Called through qsort to sort the .IA_64.unwind section during a
3539 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3540 to the output bfd so we can do proper endianness frobbing. */
3542 static bfd
*elfNN_ia64_unwind_entry_compare_bfd
;
3545 elfNN_ia64_unwind_entry_compare (const void * a
, const void * b
)
3549 av
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, a
);
3550 bv
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, b
);
3552 return (av
< bv
? -1 : av
> bv
? 1 : 0);
3555 /* Make sure we've got ourselves a nice fat __gp value. */
3557 elfNN_ia64_choose_gp (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
)
3559 bfd_vma min_vma
= (bfd_vma
) -1, max_vma
= 0;
3560 bfd_vma min_short_vma
= min_vma
, max_short_vma
= 0;
3561 struct elf_link_hash_entry
*gp
;
3564 struct elfNN_ia64_link_hash_table
*ia64_info
;
3566 ia64_info
= elfNN_ia64_hash_table (info
);
3567 if (ia64_info
== NULL
)
3570 /* Find the min and max vma of all sections marked short. Also collect
3571 min and max vma of any type, for use in selecting a nice gp. */
3572 for (os
= abfd
->sections
; os
; os
= os
->next
)
3576 if ((os
->flags
& SEC_ALLOC
) == 0)
3580 /* When this function is called from elfNN_ia64_final_link
3581 the correct value to use is os->size. When called from
3582 elfNN_ia64_relax_section we are in the middle of section
3583 sizing; some sections will already have os->size set, others
3584 will have os->size zero and os->rawsize the previous size. */
3585 hi
= os
->vma
+ (!final
&& os
->rawsize
? os
->rawsize
: os
->size
);
3593 if (os
->flags
& SEC_SMALL_DATA
)
3595 if (min_short_vma
> lo
)
3597 if (max_short_vma
< hi
)
3602 if (ia64_info
->min_short_sec
)
3605 > (ia64_info
->min_short_sec
->vma
3606 + ia64_info
->min_short_offset
))
3607 min_short_vma
= (ia64_info
->min_short_sec
->vma
3608 + ia64_info
->min_short_offset
);
3610 < (ia64_info
->max_short_sec
->vma
3611 + ia64_info
->max_short_offset
))
3612 max_short_vma
= (ia64_info
->max_short_sec
->vma
3613 + ia64_info
->max_short_offset
);
3616 /* See if the user wants to force a value. */
3617 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3621 && (gp
->root
.type
== bfd_link_hash_defined
3622 || gp
->root
.type
== bfd_link_hash_defweak
))
3624 asection
*gp_sec
= gp
->root
.u
.def
.section
;
3625 gp_val
= (gp
->root
.u
.def
.value
3626 + gp_sec
->output_section
->vma
3627 + gp_sec
->output_offset
);
3631 /* Pick a sensible value. */
3633 if (ia64_info
->min_short_sec
)
3635 bfd_vma short_range
= max_short_vma
- min_short_vma
;
3637 /* If min_short_sec is set, pick one in the middle bewteen
3638 min_short_vma and max_short_vma. */
3639 if (short_range
>= 0x400000)
3641 gp_val
= min_short_vma
+ short_range
/ 2;
3645 asection
*got_sec
= ia64_info
->root
.sgot
;
3647 /* Start with just the address of the .got. */
3649 gp_val
= got_sec
->output_section
->vma
;
3650 else if (max_short_vma
!= 0)
3651 gp_val
= min_short_vma
;
3652 else if (max_vma
- min_vma
< 0x200000)
3655 gp_val
= max_vma
- 0x200000 + 8;
3658 /* If it is possible to address the entire image, but we
3659 don't with the choice above, adjust. */
3660 if (max_vma
- min_vma
< 0x400000
3661 && (max_vma
- gp_val
>= 0x200000
3662 || gp_val
- min_vma
> 0x200000))
3663 gp_val
= min_vma
+ 0x200000;
3664 else if (max_short_vma
!= 0)
3666 /* If we don't cover all the short data, adjust. */
3667 if (max_short_vma
- gp_val
>= 0x200000)
3668 gp_val
= min_short_vma
+ 0x200000;
3670 /* If we're addressing stuff past the end, adjust back. */
3671 if (gp_val
> max_vma
)
3672 gp_val
= max_vma
- 0x200000 + 8;
3676 /* Validate whether all SHF_IA_64_SHORT sections are within
3677 range of the chosen GP. */
3679 if (max_short_vma
!= 0)
3681 if (max_short_vma
- min_short_vma
>= 0x400000)
3685 /* xgettext:c-format */
3686 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3687 bfd_get_filename (abfd
),
3688 (unsigned long) (max_short_vma
- min_short_vma
));
3691 else if ((gp_val
> min_short_vma
3692 && gp_val
- min_short_vma
> 0x200000)
3693 || (gp_val
< max_short_vma
3694 && max_short_vma
- gp_val
>= 0x200000))
3697 (_("%s: __gp does not cover short data segment"),
3698 bfd_get_filename (abfd
));
3703 _bfd_set_gp_value (abfd
, gp_val
);
3709 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3711 struct elfNN_ia64_link_hash_table
*ia64_info
;
3712 asection
*unwind_output_sec
;
3714 ia64_info
= elfNN_ia64_hash_table (info
);
3715 if (ia64_info
== NULL
)
3718 /* Make sure we've got ourselves a nice fat __gp value. */
3719 if (!bfd_link_relocatable (info
))
3722 struct elf_link_hash_entry
*gp
;
3724 /* We assume after gp is set, section size will only decrease. We
3725 need to adjust gp for it. */
3726 _bfd_set_gp_value (abfd
, 0);
3727 if (! elfNN_ia64_choose_gp (abfd
, info
, TRUE
))
3729 gp_val
= _bfd_get_gp_value (abfd
);
3731 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3735 gp
->root
.type
= bfd_link_hash_defined
;
3736 gp
->root
.u
.def
.value
= gp_val
;
3737 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3741 /* If we're producing a final executable, we need to sort the contents
3742 of the .IA_64.unwind section. Force this section to be relocated
3743 into memory rather than written immediately to the output file. */
3744 unwind_output_sec
= NULL
;
3745 if (!bfd_link_relocatable (info
))
3747 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3750 unwind_output_sec
= s
->output_section
;
3751 unwind_output_sec
->contents
3752 = bfd_malloc (unwind_output_sec
->size
);
3753 if (unwind_output_sec
->contents
== NULL
)
3758 /* Invoke the regular ELF backend linker to do all the work. */
3759 if (!bfd_elf_final_link (abfd
, info
))
3762 if (unwind_output_sec
)
3764 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3765 qsort (unwind_output_sec
->contents
,
3766 (size_t) (unwind_output_sec
->size
/ 24),
3768 elfNN_ia64_unwind_entry_compare
);
3770 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3771 unwind_output_sec
->contents
, (bfd_vma
) 0,
3772 unwind_output_sec
->size
))
3780 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3781 struct bfd_link_info
*info
,
3783 asection
*input_section
,
3785 Elf_Internal_Rela
*relocs
,
3786 Elf_Internal_Sym
*local_syms
,
3787 asection
**local_sections
)
3789 struct elfNN_ia64_link_hash_table
*ia64_info
;
3790 Elf_Internal_Shdr
*symtab_hdr
;
3791 Elf_Internal_Rela
*rel
;
3792 Elf_Internal_Rela
*relend
;
3794 bfd_boolean ret_val
= TRUE
; /* for non-fatal errors */
3797 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3798 ia64_info
= elfNN_ia64_hash_table (info
);
3799 if (ia64_info
== NULL
)
3802 /* Infect various flags from the input section to the output section. */
3803 if (bfd_link_relocatable (info
))
3807 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3808 flags
&= SHF_IA_64_NORECOV
;
3810 elf_section_data(input_section
->output_section
)
3811 ->this_hdr
.sh_flags
|= flags
;
3814 gp_val
= _bfd_get_gp_value (output_bfd
);
3815 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, FALSE
);
3818 relend
= relocs
+ input_section
->reloc_count
;
3819 for (; rel
< relend
; ++rel
)
3821 struct elf_link_hash_entry
*h
;
3822 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3823 bfd_reloc_status_type r
;
3824 reloc_howto_type
*howto
;
3825 unsigned long r_symndx
;
3826 Elf_Internal_Sym
*sym
;
3827 unsigned int r_type
;
3831 bfd_boolean dynamic_symbol_p
;
3832 bfd_boolean undef_weak_ref
;
3834 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3835 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3838 /* xgettext:c-format */
3839 (_("%B: unknown relocation type %d"),
3840 input_bfd
, (int) r_type
);
3841 bfd_set_error (bfd_error_bad_value
);
3846 howto
= ia64_elf_lookup_howto (r_type
);
3847 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3851 undef_weak_ref
= FALSE
;
3853 if (r_symndx
< symtab_hdr
->sh_info
)
3855 /* Reloc against local symbol. */
3857 sym
= local_syms
+ r_symndx
;
3858 sym_sec
= local_sections
[r_symndx
];
3860 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3861 if (!bfd_link_relocatable (info
)
3862 && (sym_sec
->flags
& SEC_MERGE
) != 0
3863 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3864 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3866 struct elfNN_ia64_local_hash_entry
*loc_h
;
3868 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, FALSE
);
3869 if (loc_h
&& ! loc_h
->sec_merge_done
)
3871 struct elfNN_ia64_dyn_sym_info
*dynent
;
3874 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3880 _bfd_merged_section_offset (output_bfd
, &msec
,
3881 elf_section_data (msec
)->
3885 dynent
->addend
-= sym
->st_value
;
3886 dynent
->addend
+= msec
->output_section
->vma
3887 + msec
->output_offset
3888 - sym_sec
->output_section
->vma
3889 - sym_sec
->output_offset
;
3892 /* We may have introduced duplicated entries. We need
3893 to remove them properly. */
3894 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3895 if (count
!= loc_h
->count
)
3897 loc_h
->count
= count
;
3898 loc_h
->sorted_count
= count
;
3901 loc_h
->sec_merge_done
= 1;
3907 bfd_boolean unresolved_reloc
;
3908 bfd_boolean warned
, ignored
;
3909 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3911 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3912 r_symndx
, symtab_hdr
, sym_hashes
,
3914 unresolved_reloc
, warned
, ignored
);
3916 if (h
->root
.type
== bfd_link_hash_undefweak
)
3917 undef_weak_ref
= TRUE
;
3918 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3922 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3923 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3924 rel
, 1, relend
, howto
, 0, contents
);
3926 if (bfd_link_relocatable (info
))
3929 hit_addr
= contents
+ rel
->r_offset
;
3930 value
+= rel
->r_addend
;
3931 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3942 case R_IA64_DIR32MSB
:
3943 case R_IA64_DIR32LSB
:
3944 case R_IA64_DIR64MSB
:
3945 case R_IA64_DIR64LSB
:
3946 /* Install a dynamic relocation for this reloc. */
3947 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3948 && r_symndx
!= STN_UNDEF
3949 && (input_section
->flags
& SEC_ALLOC
) != 0)
3951 unsigned int dyn_r_type
;
3955 BFD_ASSERT (srel
!= NULL
);
3962 /* ??? People shouldn't be doing non-pic code in
3963 shared libraries nor dynamic executables. */
3965 /* xgettext:c-format */
3966 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3968 h
? h
->root
.root
.string
3969 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
3978 /* If we don't need dynamic symbol lookup, find a
3979 matching RELATIVE relocation. */
3980 dyn_r_type
= r_type
;
3981 if (dynamic_symbol_p
)
3983 dynindx
= h
->dynindx
;
3984 addend
= rel
->r_addend
;
3991 case R_IA64_DIR32MSB
:
3992 dyn_r_type
= R_IA64_REL32MSB
;
3994 case R_IA64_DIR32LSB
:
3995 dyn_r_type
= R_IA64_REL32LSB
;
3997 case R_IA64_DIR64MSB
:
3998 dyn_r_type
= R_IA64_REL64MSB
;
4000 case R_IA64_DIR64LSB
:
4001 dyn_r_type
= R_IA64_REL64LSB
;
4011 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4012 srel
, rel
->r_offset
, dyn_r_type
,
4017 case R_IA64_LTV32MSB
:
4018 case R_IA64_LTV32LSB
:
4019 case R_IA64_LTV64MSB
:
4020 case R_IA64_LTV64LSB
:
4021 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4024 case R_IA64_GPREL22
:
4025 case R_IA64_GPREL64I
:
4026 case R_IA64_GPREL32MSB
:
4027 case R_IA64_GPREL32LSB
:
4028 case R_IA64_GPREL64MSB
:
4029 case R_IA64_GPREL64LSB
:
4030 if (dynamic_symbol_p
)
4033 /* xgettext:c-format */
4034 (_("%B: @gprel relocation against dynamic symbol %s"),
4036 h
? h
->root
.root
.string
4037 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4043 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4046 case R_IA64_LTOFF22
:
4047 case R_IA64_LTOFF22X
:
4048 case R_IA64_LTOFF64I
:
4049 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4050 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4051 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4053 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4056 case R_IA64_PLTOFF22
:
4057 case R_IA64_PLTOFF64I
:
4058 case R_IA64_PLTOFF64MSB
:
4059 case R_IA64_PLTOFF64LSB
:
4060 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4061 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, FALSE
);
4063 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4066 case R_IA64_FPTR64I
:
4067 case R_IA64_FPTR32MSB
:
4068 case R_IA64_FPTR32LSB
:
4069 case R_IA64_FPTR64MSB
:
4070 case R_IA64_FPTR64LSB
:
4071 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4072 if (dyn_i
->want_fptr
)
4074 if (!undef_weak_ref
)
4075 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4077 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4080 unsigned int dyn_r_type
= r_type
;
4081 bfd_vma addend
= rel
->r_addend
;
4083 /* Otherwise, we expect the dynamic linker to create
4086 if (dyn_i
->want_fptr
)
4088 if (r_type
== R_IA64_FPTR64I
)
4090 /* We can't represent this without a dynamic symbol.
4091 Adjust the relocation to be against an output
4092 section symbol, which are always present in the
4093 dynamic symbol table. */
4094 /* ??? People shouldn't be doing non-pic code in
4095 shared libraries. Hork. */
4097 (_("%B: linking non-pic code in a position independent executable"),
4104 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4108 if (h
->dynindx
!= -1)
4109 dynindx
= h
->dynindx
;
4111 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4112 (info
, h
->root
.u
.def
.section
->owner
,
4113 global_sym_index (h
)));
4118 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4119 (info
, input_bfd
, (long) r_symndx
));
4123 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4124 srel
, rel
->r_offset
, dyn_r_type
,
4128 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4131 case R_IA64_LTOFF_FPTR22
:
4132 case R_IA64_LTOFF_FPTR64I
:
4133 case R_IA64_LTOFF_FPTR32MSB
:
4134 case R_IA64_LTOFF_FPTR32LSB
:
4135 case R_IA64_LTOFF_FPTR64MSB
:
4136 case R_IA64_LTOFF_FPTR64LSB
:
4140 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4141 if (dyn_i
->want_fptr
)
4143 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4144 if (!undef_weak_ref
)
4145 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4150 /* Otherwise, we expect the dynamic linker to create
4154 if (h
->dynindx
!= -1)
4155 dynindx
= h
->dynindx
;
4157 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4158 (info
, h
->root
.u
.def
.section
->owner
,
4159 global_sym_index (h
)));
4162 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4163 (info
, input_bfd
, (long) r_symndx
));
4167 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4168 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4170 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4174 case R_IA64_PCREL32MSB
:
4175 case R_IA64_PCREL32LSB
:
4176 case R_IA64_PCREL64MSB
:
4177 case R_IA64_PCREL64LSB
:
4178 /* Install a dynamic relocation for this reloc. */
4179 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4181 BFD_ASSERT (srel
!= NULL
);
4183 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4184 srel
, rel
->r_offset
, r_type
,
4185 h
->dynindx
, rel
->r_addend
);
4189 case R_IA64_PCREL21B
:
4190 case R_IA64_PCREL60B
:
4191 /* We should have created a PLT entry for any dynamic symbol. */
4194 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4196 if (dyn_i
&& dyn_i
->want_plt2
)
4198 /* Should have caught this earlier. */
4199 BFD_ASSERT (rel
->r_addend
== 0);
4201 value
= (ia64_info
->root
.splt
->output_section
->vma
4202 + ia64_info
->root
.splt
->output_offset
4203 + dyn_i
->plt2_offset
);
4207 /* Since there's no PLT entry, Validate that this is
4209 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4211 /* If the symbol is undef_weak, we shouldn't be trying
4212 to call it. There's every chance that we'd wind up
4213 with an out-of-range fixup here. Don't bother setting
4214 any value at all. */
4220 case R_IA64_PCREL21BI
:
4221 case R_IA64_PCREL21F
:
4222 case R_IA64_PCREL21M
:
4223 case R_IA64_PCREL22
:
4224 case R_IA64_PCREL64I
:
4225 /* The PCREL21BI reloc is specifically not intended for use with
4226 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4227 fixup code, and thus probably ought not be dynamic. The
4228 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4229 if (dynamic_symbol_p
)
4233 if (r_type
== R_IA64_PCREL21BI
)
4234 /* xgettext:c-format */
4235 msg
= _("%B: @internal branch to dynamic symbol %s");
4236 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4237 /* xgettext:c-format */
4238 msg
= _("%B: speculation fixup to dynamic symbol %s");
4240 /* xgettext:c-format */
4241 msg
= _("%B: @pcrel relocation against dynamic symbol %s");
4242 _bfd_error_handler (msg
, input_bfd
,
4243 h
? h
->root
.root
.string
4244 : bfd_elf_sym_name (input_bfd
,
4254 /* Make pc-relative. */
4255 value
-= (input_section
->output_section
->vma
4256 + input_section
->output_offset
4257 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4258 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4261 case R_IA64_SEGREL32MSB
:
4262 case R_IA64_SEGREL32LSB
:
4263 case R_IA64_SEGREL64MSB
:
4264 case R_IA64_SEGREL64LSB
:
4266 /* Find the segment that contains the output_section. */
4267 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4268 (output_bfd
, input_section
->output_section
);
4272 r
= bfd_reloc_notsupported
;
4276 /* The VMA of the segment is the vaddr of the associated
4278 if (value
> p
->p_vaddr
)
4279 value
-= p
->p_vaddr
;
4282 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4287 case R_IA64_SECREL32MSB
:
4288 case R_IA64_SECREL32LSB
:
4289 case R_IA64_SECREL64MSB
:
4290 case R_IA64_SECREL64LSB
:
4291 /* Make output-section relative to section where the symbol
4292 is defined. PR 475 */
4294 value
-= sym_sec
->output_section
->vma
;
4295 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4298 case R_IA64_IPLTMSB
:
4299 case R_IA64_IPLTLSB
:
4300 /* Install a dynamic relocation for this reloc. */
4301 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4302 && (input_section
->flags
& SEC_ALLOC
) != 0)
4304 BFD_ASSERT (srel
!= NULL
);
4306 /* If we don't need dynamic symbol lookup, install two
4307 RELATIVE relocations. */
4308 if (!dynamic_symbol_p
)
4310 unsigned int dyn_r_type
;
4312 if (r_type
== R_IA64_IPLTMSB
)
4313 dyn_r_type
= R_IA64_REL64MSB
;
4315 dyn_r_type
= R_IA64_REL64LSB
;
4317 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4319 srel
, rel
->r_offset
,
4320 dyn_r_type
, 0, value
);
4321 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4323 srel
, rel
->r_offset
+ 8,
4324 dyn_r_type
, 0, gp_val
);
4327 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4328 srel
, rel
->r_offset
, r_type
,
4329 h
->dynindx
, rel
->r_addend
);
4332 if (r_type
== R_IA64_IPLTMSB
)
4333 r_type
= R_IA64_DIR64MSB
;
4335 r_type
= R_IA64_DIR64LSB
;
4336 ia64_elf_install_value (hit_addr
, value
, r_type
);
4337 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4340 case R_IA64_TPREL14
:
4341 case R_IA64_TPREL22
:
4342 case R_IA64_TPREL64I
:
4343 if (elf_hash_table (info
)->tls_sec
== NULL
)
4344 goto missing_tls_sec
;
4345 value
-= elfNN_ia64_tprel_base (info
);
4346 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4349 case R_IA64_DTPREL14
:
4350 case R_IA64_DTPREL22
:
4351 case R_IA64_DTPREL64I
:
4352 case R_IA64_DTPREL32LSB
:
4353 case R_IA64_DTPREL32MSB
:
4354 case R_IA64_DTPREL64LSB
:
4355 case R_IA64_DTPREL64MSB
:
4356 if (elf_hash_table (info
)->tls_sec
== NULL
)
4357 goto missing_tls_sec
;
4358 value
-= elfNN_ia64_dtprel_base (info
);
4359 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4362 case R_IA64_LTOFF_TPREL22
:
4363 case R_IA64_LTOFF_DTPMOD22
:
4364 case R_IA64_LTOFF_DTPREL22
:
4367 long dynindx
= h
? h
->dynindx
: -1;
4368 bfd_vma r_addend
= rel
->r_addend
;
4373 case R_IA64_LTOFF_TPREL22
:
4374 if (!dynamic_symbol_p
)
4376 if (elf_hash_table (info
)->tls_sec
== NULL
)
4377 goto missing_tls_sec
;
4378 if (!bfd_link_pic (info
))
4379 value
-= elfNN_ia64_tprel_base (info
);
4382 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4386 got_r_type
= R_IA64_TPREL64LSB
;
4388 case R_IA64_LTOFF_DTPMOD22
:
4389 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4391 got_r_type
= R_IA64_DTPMOD64LSB
;
4393 case R_IA64_LTOFF_DTPREL22
:
4394 if (!dynamic_symbol_p
)
4396 if (elf_hash_table (info
)->tls_sec
== NULL
)
4397 goto missing_tls_sec
;
4398 value
-= elfNN_ia64_dtprel_base (info
);
4400 got_r_type
= R_IA64_DTPRELNNLSB
;
4403 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4404 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4407 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4412 r
= bfd_reloc_notsupported
;
4421 case bfd_reloc_undefined
:
4422 /* This can happen for global table relative relocs if
4423 __gp is undefined. This is a panic situation so we
4424 don't try to continue. */
4425 (*info
->callbacks
->undefined_symbol
)
4426 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4429 case bfd_reloc_notsupported
:
4434 name
= h
->root
.root
.string
;
4436 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4438 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4440 input_section
, rel
->r_offset
);
4445 case bfd_reloc_dangerous
:
4446 case bfd_reloc_outofrange
:
4447 case bfd_reloc_overflow
:
4454 name
= h
->root
.root
.string
;
4456 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4461 case R_IA64_TPREL14
:
4462 case R_IA64_TPREL22
:
4463 case R_IA64_TPREL64I
:
4464 case R_IA64_DTPREL14
:
4465 case R_IA64_DTPREL22
:
4466 case R_IA64_DTPREL64I
:
4467 case R_IA64_DTPREL32LSB
:
4468 case R_IA64_DTPREL32MSB
:
4469 case R_IA64_DTPREL64LSB
:
4470 case R_IA64_DTPREL64MSB
:
4471 case R_IA64_LTOFF_TPREL22
:
4472 case R_IA64_LTOFF_DTPMOD22
:
4473 case R_IA64_LTOFF_DTPREL22
:
4475 /* xgettext:c-format */
4476 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4477 input_bfd
, input_section
, howto
->name
, name
,
4481 case R_IA64_PCREL21B
:
4482 case R_IA64_PCREL21BI
:
4483 case R_IA64_PCREL21M
:
4484 case R_IA64_PCREL21F
:
4485 if (is_elf_hash_table (info
->hash
))
4487 /* Relaxtion is always performed for ELF output.
4488 Overflow failures for those relocations mean
4489 that the section is too big to relax. */
4491 /* xgettext:c-format */
4492 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4493 input_bfd
, input_section
, howto
->name
, name
,
4494 rel
->r_offset
, input_section
->size
);
4499 (*info
->callbacks
->reloc_overflow
) (info
,
4520 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4521 struct bfd_link_info
*info
,
4522 struct elf_link_hash_entry
*h
,
4523 Elf_Internal_Sym
*sym
)
4525 struct elfNN_ia64_link_hash_table
*ia64_info
;
4526 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4528 ia64_info
= elfNN_ia64_hash_table (info
);
4529 if (ia64_info
== NULL
)
4532 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4534 /* Fill in the PLT data, if required. */
4535 if (dyn_i
&& dyn_i
->want_plt
)
4537 Elf_Internal_Rela outrel
;
4540 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4542 gp_val
= _bfd_get_gp_value (output_bfd
);
4544 /* Initialize the minimal PLT entry. */
4546 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4547 plt_sec
= ia64_info
->root
.splt
;
4548 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4550 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4551 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4552 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4554 plt_addr
= (plt_sec
->output_section
->vma
4555 + plt_sec
->output_offset
4556 + dyn_i
->plt_offset
);
4557 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, TRUE
);
4559 /* Initialize the FULL PLT entry, if needed. */
4560 if (dyn_i
->want_plt2
)
4562 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4564 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4565 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4567 /* Mark the symbol as undefined, rather than as defined in the
4568 plt section. Leave the value alone. */
4569 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4570 first place. But perhaps elflink.c did some for us. */
4571 if (!h
->def_regular
)
4572 sym
->st_shndx
= SHN_UNDEF
;
4575 /* Create the dynamic relocation. */
4576 outrel
.r_offset
= pltoff_addr
;
4577 if (bfd_little_endian (output_bfd
))
4578 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4580 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4581 outrel
.r_addend
= 0;
4583 /* This is fun. In the .IA_64.pltoff section, we've got entries
4584 that correspond both to real PLT entries, and those that
4585 happened to resolve to local symbols but need to be created
4586 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4587 relocations for the real PLT should come at the end of the
4588 section, so that they can be indexed by plt entry at runtime.
4590 We emitted all of the relocations for the non-PLT @pltoff
4591 entries during relocate_section. So we can consider the
4592 existing sec->reloc_count to be the base of the array of
4595 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4596 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4597 * sizeof (ElfNN_External_Rela
));
4598 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4601 /* Mark some specially defined symbols as absolute. */
4602 if (h
== ia64_info
->root
.hdynamic
4603 || h
== ia64_info
->root
.hgot
4604 || h
== ia64_info
->root
.hplt
)
4605 sym
->st_shndx
= SHN_ABS
;
4611 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4612 struct bfd_link_info
*info
)
4614 struct elfNN_ia64_link_hash_table
*ia64_info
;
4617 ia64_info
= elfNN_ia64_hash_table (info
);
4618 if (ia64_info
== NULL
)
4621 dynobj
= ia64_info
->root
.dynobj
;
4623 if (ia64_info
->root
.dynamic_sections_created
)
4625 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4626 asection
*sdyn
, *sgotplt
;
4629 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4630 sgotplt
= ia64_info
->root
.sgotplt
;
4631 BFD_ASSERT (sdyn
!= NULL
);
4632 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4633 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4635 gp_val
= _bfd_get_gp_value (abfd
);
4637 for (; dyncon
< dynconend
; dyncon
++)
4639 Elf_Internal_Dyn dyn
;
4641 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4646 dyn
.d_un
.d_ptr
= gp_val
;
4650 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4651 * sizeof (ElfNN_External_Rela
));
4655 /* See the comment above in finish_dynamic_symbol. */
4656 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4657 + ia64_info
->rel_pltoff_sec
->output_offset
4658 + (ia64_info
->rel_pltoff_sec
->reloc_count
4659 * sizeof (ElfNN_External_Rela
)));
4662 case DT_IA_64_PLT_RESERVE
:
4663 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4664 + sgotplt
->output_offset
);
4668 /* Do not have RELASZ include JMPREL. This makes things
4669 easier on ld.so. This is not what the rest of BFD set up. */
4670 dyn
.d_un
.d_val
-= (ia64_info
->minplt_entries
4671 * sizeof (ElfNN_External_Rela
));
4675 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4678 /* Initialize the PLT0 entry. */
4679 if (ia64_info
->root
.splt
)
4681 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4684 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4686 pltres
= (sgotplt
->output_section
->vma
4687 + sgotplt
->output_offset
4690 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4697 /* ELF file flag handling: */
4699 /* Function to keep IA-64 specific file flags. */
4701 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4703 BFD_ASSERT (!elf_flags_init (abfd
)
4704 || elf_elfheader (abfd
)->e_flags
== flags
);
4706 elf_elfheader (abfd
)->e_flags
= flags
;
4707 elf_flags_init (abfd
) = TRUE
;
4711 /* Merge backend specific data from an object file to the output
4712 object file when linking. */
4714 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4716 bfd
*obfd
= info
->output_bfd
;
4719 bfd_boolean ok
= TRUE
;
4721 /* Don't even pretend to support mixed-format linking. */
4722 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4723 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4726 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4727 out_flags
= elf_elfheader (obfd
)->e_flags
;
4729 if (! elf_flags_init (obfd
))
4731 elf_flags_init (obfd
) = TRUE
;
4732 elf_elfheader (obfd
)->e_flags
= in_flags
;
4734 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4735 && bfd_get_arch_info (obfd
)->the_default
)
4737 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4738 bfd_get_mach (ibfd
));
4744 /* Check flag compatibility. */
4745 if (in_flags
== out_flags
)
4748 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4749 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4750 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4752 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4755 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4758 bfd_set_error (bfd_error_bad_value
);
4761 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4764 (_("%B: linking big-endian files with little-endian files"),
4767 bfd_set_error (bfd_error_bad_value
);
4770 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4773 (_("%B: linking 64-bit files with 32-bit files"),
4776 bfd_set_error (bfd_error_bad_value
);
4779 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4782 (_("%B: linking constant-gp files with non-constant-gp files"),
4785 bfd_set_error (bfd_error_bad_value
);
4788 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4789 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4792 (_("%B: linking auto-pic files with non-auto-pic files"),
4795 bfd_set_error (bfd_error_bad_value
);
4803 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4805 FILE *file
= (FILE *) ptr
;
4806 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4808 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4810 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4811 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4812 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4813 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4814 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4815 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4816 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4817 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4818 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4820 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4824 static enum elf_reloc_type_class
4825 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4826 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4827 const Elf_Internal_Rela
*rela
)
4829 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4831 case R_IA64_REL32MSB
:
4832 case R_IA64_REL32LSB
:
4833 case R_IA64_REL64MSB
:
4834 case R_IA64_REL64LSB
:
4835 return reloc_class_relative
;
4836 case R_IA64_IPLTMSB
:
4837 case R_IA64_IPLTLSB
:
4838 return reloc_class_plt
;
4840 return reloc_class_copy
;
4842 return reloc_class_normal
;
4846 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4848 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4849 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4850 { NULL
, 0, 0, 0, 0 }
4854 elfNN_ia64_object_p (bfd
*abfd
)
4857 asection
*group
, *unwi
, *unw
;
4860 char *unwi_name
, *unw_name
;
4863 if (abfd
->flags
& DYNAMIC
)
4866 /* Flags for fake group section. */
4867 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4870 /* We add a fake section group for each .gnu.linkonce.t.* section,
4871 which isn't in a section group, and its unwind sections. */
4872 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4874 if (elf_sec_group (sec
) == NULL
4875 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4876 == (SEC_LINK_ONCE
| SEC_CODE
))
4877 && CONST_STRNEQ (sec
->name
, ".gnu.linkonce.t."))
4879 name
= sec
->name
+ 16;
4881 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4882 unwi_name
= bfd_alloc (abfd
, amt
);
4886 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4887 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4889 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4890 unw_name
= bfd_alloc (abfd
, amt
);
4894 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4895 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4897 /* We need to create a fake group section for it and its
4899 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4904 /* Move the fake group section to the beginning. */
4905 bfd_section_list_remove (abfd
, group
);
4906 bfd_section_list_prepend (abfd
, group
);
4908 elf_next_in_group (group
) = sec
;
4910 elf_group_name (sec
) = name
;
4911 elf_next_in_group (sec
) = sec
;
4912 elf_sec_group (sec
) = group
;
4916 elf_group_name (unwi
) = name
;
4917 elf_next_in_group (unwi
) = sec
;
4918 elf_next_in_group (sec
) = unwi
;
4919 elf_sec_group (unwi
) = group
;
4924 elf_group_name (unw
) = name
;
4927 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4928 elf_next_in_group (unwi
) = unw
;
4932 elf_next_in_group (unw
) = sec
;
4933 elf_next_in_group (sec
) = unw
;
4935 elf_sec_group (unw
) = group
;
4938 /* Fake SHT_GROUP section header. */
4939 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4940 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4947 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4949 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4950 return (vec
== &ia64_elfNN_hpux_be_vec
);
4954 elfNN_hpux_post_process_headers (bfd
*abfd
,
4955 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
4957 Elf_Internal_Ehdr
*i_ehdrp
= elf_elfheader (abfd
);
4959 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4960 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4964 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4965 asection
*sec
, int *retval
)
4967 if (bfd_is_com_section (sec
))
4969 *retval
= SHN_IA_64_ANSI_COMMON
;
4976 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4979 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
4981 switch (elfsym
->internal_elf_sym
.st_shndx
)
4983 case SHN_IA_64_ANSI_COMMON
:
4984 asym
->section
= bfd_com_section_ptr
;
4985 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
4986 asym
->flags
&= ~BSF_GLOBAL
;
4991 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4992 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4993 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4994 #define TARGET_BIG_NAME "elfNN-ia64-big"
4995 #define ELF_ARCH bfd_arch_ia64
4996 #define ELF_TARGET_ID IA64_ELF_DATA
4997 #define ELF_MACHINE_CODE EM_IA_64
4998 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4999 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5000 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5001 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5003 #define elf_backend_section_from_shdr \
5004 elfNN_ia64_section_from_shdr
5005 #define elf_backend_section_flags \
5006 elfNN_ia64_section_flags
5007 #define elf_backend_fake_sections \
5008 elfNN_ia64_fake_sections
5009 #define elf_backend_final_write_processing \
5010 elfNN_ia64_final_write_processing
5011 #define elf_backend_add_symbol_hook \
5012 elfNN_ia64_add_symbol_hook
5013 #define elf_backend_additional_program_headers \
5014 elfNN_ia64_additional_program_headers
5015 #define elf_backend_modify_segment_map \
5016 elfNN_ia64_modify_segment_map
5017 #define elf_backend_modify_program_headers \
5018 elfNN_ia64_modify_program_headers
5019 #define elf_info_to_howto \
5020 elfNN_ia64_info_to_howto
5022 #define bfd_elfNN_bfd_reloc_type_lookup \
5023 ia64_elf_reloc_type_lookup
5024 #define bfd_elfNN_bfd_reloc_name_lookup \
5025 ia64_elf_reloc_name_lookup
5026 #define bfd_elfNN_bfd_is_local_label_name \
5027 elfNN_ia64_is_local_label_name
5028 #define bfd_elfNN_bfd_relax_section \
5029 elfNN_ia64_relax_section
5031 #define elf_backend_object_p \
5034 /* Stuff for the BFD linker: */
5035 #define bfd_elfNN_bfd_link_hash_table_create \
5036 elfNN_ia64_hash_table_create
5037 #define elf_backend_create_dynamic_sections \
5038 elfNN_ia64_create_dynamic_sections
5039 #define elf_backend_check_relocs \
5040 elfNN_ia64_check_relocs
5041 #define elf_backend_adjust_dynamic_symbol \
5042 elfNN_ia64_adjust_dynamic_symbol
5043 #define elf_backend_size_dynamic_sections \
5044 elfNN_ia64_size_dynamic_sections
5045 #define elf_backend_omit_section_dynsym \
5046 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5047 #define elf_backend_relocate_section \
5048 elfNN_ia64_relocate_section
5049 #define elf_backend_finish_dynamic_symbol \
5050 elfNN_ia64_finish_dynamic_symbol
5051 #define elf_backend_finish_dynamic_sections \
5052 elfNN_ia64_finish_dynamic_sections
5053 #define bfd_elfNN_bfd_final_link \
5054 elfNN_ia64_final_link
5056 #define bfd_elfNN_bfd_merge_private_bfd_data \
5057 elfNN_ia64_merge_private_bfd_data
5058 #define bfd_elfNN_bfd_set_private_flags \
5059 elfNN_ia64_set_private_flags
5060 #define bfd_elfNN_bfd_print_private_bfd_data \
5061 elfNN_ia64_print_private_bfd_data
5063 #define elf_backend_plt_readonly 1
5064 #define elf_backend_want_plt_sym 0
5065 #define elf_backend_plt_alignment 5
5066 #define elf_backend_got_header_size 0
5067 #define elf_backend_want_got_plt 1
5068 #define elf_backend_may_use_rel_p 1
5069 #define elf_backend_may_use_rela_p 1
5070 #define elf_backend_default_use_rela_p 1
5071 #define elf_backend_want_dynbss 0
5072 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5073 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5074 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5075 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5076 #define elf_backend_rela_normal 1
5077 #define elf_backend_special_sections elfNN_ia64_special_sections
5078 #define elf_backend_default_execstack 0
5080 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5081 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5082 We don't want to flood users with so many error messages. We turn
5083 off the warning for now. It will be turned on later when the Intel
5084 compiler is fixed. */
5085 #define elf_backend_link_order_error_handler NULL
5087 #include "elfNN-target.h"
5089 /* HPUX-specific vectors. */
5091 #undef TARGET_LITTLE_SYM
5092 #undef TARGET_LITTLE_NAME
5093 #undef TARGET_BIG_SYM
5094 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5095 #undef TARGET_BIG_NAME
5096 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5098 /* These are HP-UX specific functions. */
5100 #undef elf_backend_post_process_headers
5101 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5103 #undef elf_backend_section_from_bfd_section
5104 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5106 #undef elf_backend_symbol_processing
5107 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5109 #undef elf_backend_want_p_paddr_set_to_zero
5110 #define elf_backend_want_p_paddr_set_to_zero 1
5112 #undef ELF_COMMONPAGESIZE
5114 #define ELF_OSABI ELFOSABI_HPUX
5117 #define elfNN_bed elfNN_ia64_hpux_bed
5119 #include "elfNN-target.h"