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)
618 (*_bfd_error_handler
)
619 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
620 sec
->owner
, sec
, (unsigned long) roff
);
621 bfd_set_error (bfd_error_bad_value
);
625 /* If the branch and target are in the same section, you've
626 got one honking big section and we can't help you unless
627 you are branching backwards. You'll get an error message
629 if (tsec
== sec
&& toff
> roff
)
632 /* Look for an existing fixup to this address. */
633 for (f
= fixups
; f
; f
= f
->next
)
634 if (f
->tsec
== tsec
&& f
->toff
== toff
)
639 /* Two alternatives: If it's a branch to a PLT entry, we can
640 make a copy of the FULL_PLT entry. Otherwise, we'll have
641 to use a `brl' insn to get where we're going. */
645 if (tsec
== ia64_info
->root
.splt
)
646 size
= sizeof (plt_full_entry
);
648 size
= oor_branch_size
;
650 /* Resize the current section to make room for the new branch. */
651 trampoff
= (sec
->size
+ 15) & (bfd_vma
) -16;
653 /* If trampoline is out of range, there is nothing we
655 offset
= trampoff
- (roff
& (bfd_vma
) -4);
656 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
659 amt
= trampoff
+ size
;
660 contents
= (bfd_byte
*) bfd_realloc (contents
, amt
);
661 if (contents
== NULL
)
665 if (tsec
== ia64_info
->root
.splt
)
667 memcpy (contents
+ trampoff
, plt_full_entry
, size
);
669 /* Hijack the old relocation for use as the PLTOFF reloc. */
670 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
672 irel
->r_offset
= trampoff
;
676 if (size
== sizeof (oor_ip
))
678 memcpy (contents
+ trampoff
, oor_ip
, size
);
679 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
681 irel
->r_addend
-= 16;
682 irel
->r_offset
= trampoff
+ 2;
686 memcpy (contents
+ trampoff
, oor_brl
, size
);
687 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
689 irel
->r_offset
= trampoff
+ 2;
694 /* Record the fixup so we don't do it again this section. */
695 f
= (struct one_fixup
*)
696 bfd_malloc ((bfd_size_type
) sizeof (*f
));
700 f
->trampoff
= trampoff
;
705 /* If trampoline is out of range, there is nothing we
707 offset
= f
->trampoff
- (roff
& (bfd_vma
) -4);
708 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
711 /* Nop out the reloc, since we're finalizing things here. */
712 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
715 /* Fix up the existing branch to hit the trampoline. */
716 if (ia64_elf_install_value (contents
+ roff
, offset
, r_type
)
720 changed_contents
= TRUE
;
721 changed_relocs
= TRUE
;
728 bfd
*obfd
= sec
->output_section
->owner
;
729 gp
= _bfd_get_gp_value (obfd
);
732 if (!elfNN_ia64_choose_gp (obfd
, link_info
, FALSE
))
734 gp
= _bfd_get_gp_value (obfd
);
738 /* If the data is out of range, do nothing. */
739 if ((bfd_signed_vma
) (symaddr
- gp
) >= 0x200000
740 ||(bfd_signed_vma
) (symaddr
- gp
) < -0x200000)
743 if (r_type
== R_IA64_GPREL22
)
744 elfNN_ia64_update_short_info (tsec
->output_section
,
745 tsec
->output_offset
+ toff
,
747 else if (r_type
== R_IA64_LTOFF22X
)
749 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
751 changed_relocs
= TRUE
;
752 if (dyn_i
->want_gotx
)
754 dyn_i
->want_gotx
= 0;
755 changed_got
|= !dyn_i
->want_got
;
758 elfNN_ia64_update_short_info (tsec
->output_section
,
759 tsec
->output_offset
+ toff
,
764 ia64_elf_relax_ldxmov (contents
, roff
);
765 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
766 changed_contents
= TRUE
;
767 changed_relocs
= TRUE
;
772 /* ??? If we created fixups, this may push the code segment large
773 enough that the data segment moves, which will change the GP.
774 Reset the GP so that we re-calculate next round. We need to
775 do this at the _beginning_ of the next round; now will not do. */
777 /* Clean up and go home. */
780 struct one_fixup
*f
= fixups
;
781 fixups
= fixups
->next
;
786 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
788 if (! link_info
->keep_memory
)
792 /* Cache the symbols for elf_link_input_bfd. */
793 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
798 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
800 if (!changed_contents
&& !link_info
->keep_memory
)
804 /* Cache the section contents for elf_link_input_bfd. */
805 elf_section_data (sec
)->this_hdr
.contents
= contents
;
809 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
812 free (internal_relocs
);
814 elf_section_data (sec
)->relocs
= internal_relocs
;
819 struct elfNN_ia64_allocate_data data
;
820 data
.info
= link_info
;
822 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
824 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
825 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
826 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
827 ia64_info
->root
.sgot
->size
= data
.ofs
;
829 if (ia64_info
->root
.dynamic_sections_created
830 && ia64_info
->root
.srelgot
!= NULL
)
832 /* Resize .rela.got. */
833 ia64_info
->root
.srelgot
->size
= 0;
834 if (bfd_link_pic (link_info
)
835 && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
836 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
837 data
.only_got
= TRUE
;
838 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
,
843 if (link_info
->relax_pass
== 0)
845 /* Pass 0 is only needed to relax br. */
846 sec
->skip_relax_pass_0
= skip_relax_pass_0
;
847 sec
->skip_relax_pass_1
= skip_relax_pass_1
;
850 *again
= changed_contents
|| changed_relocs
;
854 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
857 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
859 if (internal_relocs
!= NULL
860 && elf_section_data (sec
)->relocs
!= internal_relocs
)
861 free (internal_relocs
);
864 #undef skip_relax_pass_0
865 #undef skip_relax_pass_1
867 /* Return TRUE if NAME is an unwind table section name. */
869 static inline bfd_boolean
870 is_unwind_section_name (bfd
*abfd
, const char *name
)
872 if (elfNN_ia64_hpux_vec (abfd
->xvec
)
873 && !strcmp (name
, ELF_STRING_ia64_unwind_hdr
))
876 return ((CONST_STRNEQ (name
, ELF_STRING_ia64_unwind
)
877 && ! CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_info
))
878 || CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_once
));
881 /* Handle an IA-64 specific section when reading an object file. This
882 is called when bfd_section_from_shdr finds a section with an unknown
886 elfNN_ia64_section_from_shdr (bfd
*abfd
,
887 Elf_Internal_Shdr
*hdr
,
891 /* There ought to be a place to keep ELF backend specific flags, but
892 at the moment there isn't one. We just keep track of the
893 sections by their name, instead. Fortunately, the ABI gives
894 suggested names for all the MIPS specific sections, so we will
895 probably get away with this. */
896 switch (hdr
->sh_type
)
898 case SHT_IA_64_UNWIND
:
899 case SHT_IA_64_HP_OPT_ANOT
:
903 if (strcmp (name
, ELF_STRING_ia64_archext
) != 0)
911 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
917 /* Convert IA-64 specific section flags to bfd internal section flags. */
919 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
923 elfNN_ia64_section_flags (flagword
*flags
,
924 const Elf_Internal_Shdr
*hdr
)
926 if (hdr
->sh_flags
& SHF_IA_64_SHORT
)
927 *flags
|= SEC_SMALL_DATA
;
932 /* Set the correct type for an IA-64 ELF section. We do this by the
933 section name, which is a hack, but ought to work. */
936 elfNN_ia64_fake_sections (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
941 name
= bfd_get_section_name (abfd
, sec
);
943 if (is_unwind_section_name (abfd
, name
))
945 /* We don't have the sections numbered at this point, so sh_info
946 is set later, in elfNN_ia64_final_write_processing. */
947 hdr
->sh_type
= SHT_IA_64_UNWIND
;
948 hdr
->sh_flags
|= SHF_LINK_ORDER
;
950 else if (strcmp (name
, ELF_STRING_ia64_archext
) == 0)
951 hdr
->sh_type
= SHT_IA_64_EXT
;
952 else if (strcmp (name
, ".HP.opt_annot") == 0)
953 hdr
->sh_type
= SHT_IA_64_HP_OPT_ANOT
;
954 else if (strcmp (name
, ".reloc") == 0)
955 /* This is an ugly, but unfortunately necessary hack that is
956 needed when producing EFI binaries on IA-64. It tells
957 elf.c:elf_fake_sections() not to consider ".reloc" as a section
958 containing ELF relocation info. We need this hack in order to
959 be able to generate ELF binaries that can be translated into
960 EFI applications (which are essentially COFF objects). Those
961 files contain a COFF ".reloc" section inside an ELFNN object,
962 which would normally cause BFD to segfault because it would
963 attempt to interpret this section as containing relocation
964 entries for section "oc". With this hack enabled, ".reloc"
965 will be treated as a normal data section, which will avoid the
966 segfault. However, you won't be able to create an ELFNN binary
967 with a section named "oc" that needs relocations, but that's
968 the kind of ugly side-effects you get when detecting section
969 types based on their names... In practice, this limitation is
971 hdr
->sh_type
= SHT_PROGBITS
;
973 if (sec
->flags
& SEC_SMALL_DATA
)
974 hdr
->sh_flags
|= SHF_IA_64_SHORT
;
976 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
978 if (elfNN_ia64_hpux_vec (abfd
->xvec
) && (sec
->flags
& SHF_TLS
))
979 hdr
->sh_flags
|= SHF_IA_64_HP_TLS
;
984 /* The final processing done just before writing out an IA-64 ELF
988 elfNN_ia64_final_write_processing (bfd
*abfd
,
989 bfd_boolean linker ATTRIBUTE_UNUSED
)
991 Elf_Internal_Shdr
*hdr
;
994 for (s
= abfd
->sections
; s
; s
= s
->next
)
996 hdr
= &elf_section_data (s
)->this_hdr
;
997 switch (hdr
->sh_type
)
999 case SHT_IA_64_UNWIND
:
1000 /* The IA-64 processor-specific ABI requires setting sh_link
1001 to the unwind section, whereas HP-UX requires sh_info to
1002 do so. For maximum compatibility, we'll set both for
1004 hdr
->sh_info
= hdr
->sh_link
;
1009 if (! elf_flags_init (abfd
))
1011 unsigned long flags
= 0;
1013 if (abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
)
1014 flags
|= EF_IA_64_BE
;
1015 if (bfd_get_mach (abfd
) == bfd_mach_ia64_elf64
)
1016 flags
|= EF_IA_64_ABI64
;
1018 elf_elfheader(abfd
)->e_flags
= flags
;
1019 elf_flags_init (abfd
) = TRUE
;
1023 /* Hook called by the linker routine which adds symbols from an object
1024 file. We use it to put .comm items in .sbss, and not .bss. */
1027 elfNN_ia64_add_symbol_hook (bfd
*abfd
,
1028 struct bfd_link_info
*info
,
1029 Elf_Internal_Sym
*sym
,
1030 const char **namep ATTRIBUTE_UNUSED
,
1031 flagword
*flagsp ATTRIBUTE_UNUSED
,
1035 if (sym
->st_shndx
== SHN_COMMON
1036 && !bfd_link_relocatable (info
)
1037 && sym
->st_size
<= elf_gp_size (abfd
))
1039 /* Common symbols less than or equal to -G nn bytes are
1040 automatically put into .sbss. */
1042 asection
*scomm
= bfd_get_section_by_name (abfd
, ".scommon");
1046 scomm
= bfd_make_section_with_flags (abfd
, ".scommon",
1049 | SEC_LINKER_CREATED
));
1055 *valp
= sym
->st_size
;
1061 /* Return the number of additional phdrs we will need. */
1064 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1065 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1070 /* See if we need a PT_IA_64_ARCHEXT segment. */
1071 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1072 if (s
&& (s
->flags
& SEC_LOAD
))
1075 /* Count how many PT_IA_64_UNWIND segments we need. */
1076 for (s
= abfd
->sections
; s
; s
= s
->next
)
1077 if (is_unwind_section_name (abfd
, s
->name
) && (s
->flags
& SEC_LOAD
))
1084 elfNN_ia64_modify_segment_map (bfd
*abfd
,
1085 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1087 struct elf_segment_map
*m
, **pm
;
1088 Elf_Internal_Shdr
*hdr
;
1091 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1092 all PT_LOAD segments. */
1093 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1094 if (s
&& (s
->flags
& SEC_LOAD
))
1096 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1097 if (m
->p_type
== PT_IA_64_ARCHEXT
)
1101 m
= ((struct elf_segment_map
*)
1102 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1106 m
->p_type
= PT_IA_64_ARCHEXT
;
1110 /* We want to put it after the PHDR and INTERP segments. */
1111 pm
= &elf_seg_map (abfd
);
1113 && ((*pm
)->p_type
== PT_PHDR
1114 || (*pm
)->p_type
== PT_INTERP
))
1122 /* Install PT_IA_64_UNWIND segments, if needed. */
1123 for (s
= abfd
->sections
; s
; s
= s
->next
)
1125 hdr
= &elf_section_data (s
)->this_hdr
;
1126 if (hdr
->sh_type
!= SHT_IA_64_UNWIND
)
1129 if (s
&& (s
->flags
& SEC_LOAD
))
1131 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1132 if (m
->p_type
== PT_IA_64_UNWIND
)
1136 /* Look through all sections in the unwind segment
1137 for a match since there may be multiple sections
1139 for (i
= m
->count
- 1; i
>= 0; --i
)
1140 if (m
->sections
[i
] == s
)
1149 m
= ((struct elf_segment_map
*)
1150 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1154 m
->p_type
= PT_IA_64_UNWIND
;
1159 /* We want to put it last. */
1160 pm
= &elf_seg_map (abfd
);
1171 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1172 the input sections for each output section in the segment and testing
1173 for SHF_IA_64_NORECOV on each. */
1176 elfNN_ia64_modify_program_headers (bfd
*abfd
,
1177 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1179 struct elf_obj_tdata
*tdata
= elf_tdata (abfd
);
1180 struct elf_segment_map
*m
;
1181 Elf_Internal_Phdr
*p
;
1183 for (p
= tdata
->phdr
, m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
, p
++)
1184 if (m
->p_type
== PT_LOAD
)
1187 for (i
= m
->count
- 1; i
>= 0; --i
)
1189 struct bfd_link_order
*order
= m
->sections
[i
]->map_head
.link_order
;
1191 while (order
!= NULL
)
1193 if (order
->type
== bfd_indirect_link_order
)
1195 asection
*is
= order
->u
.indirect
.section
;
1196 bfd_vma flags
= elf_section_data(is
)->this_hdr
.sh_flags
;
1197 if (flags
& SHF_IA_64_NORECOV
)
1199 p
->p_flags
|= PF_IA_64_NORECOV
;
1203 order
= order
->next
;
1212 /* According to the Tahoe assembler spec, all labels starting with a
1216 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1219 return name
[0] == '.';
1222 /* Should we do dynamic things to this symbol? */
1225 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry
*h
,
1226 struct bfd_link_info
*info
, int r_type
)
1228 bfd_boolean ignore_protected
1229 = ((r_type
& 0xf8) == 0x40 /* FPTR relocs */
1230 || (r_type
& 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1232 return _bfd_elf_dynamic_symbol_p (h
, info
, ignore_protected
);
1235 static struct bfd_hash_entry
*
1236 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry
*entry
,
1237 struct bfd_hash_table
*table
,
1240 struct elfNN_ia64_link_hash_entry
*ret
;
1241 ret
= (struct elfNN_ia64_link_hash_entry
*) entry
;
1243 /* Allocate the structure if it has not already been allocated by a
1246 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
1251 /* Call the allocation method of the superclass. */
1252 ret
= ((struct elfNN_ia64_link_hash_entry
*)
1253 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1258 ret
->sorted_count
= 0;
1260 return (struct bfd_hash_entry
*) ret
;
1264 elfNN_ia64_hash_copy_indirect (struct bfd_link_info
*info
,
1265 struct elf_link_hash_entry
*xdir
,
1266 struct elf_link_hash_entry
*xind
)
1268 struct elfNN_ia64_link_hash_entry
*dir
, *ind
;
1270 dir
= (struct elfNN_ia64_link_hash_entry
*) xdir
;
1271 ind
= (struct elfNN_ia64_link_hash_entry
*) xind
;
1273 /* Copy down any references that we may have already seen to the
1274 symbol which just became indirect. */
1276 dir
->root
.ref_dynamic
|= ind
->root
.ref_dynamic
;
1277 dir
->root
.ref_regular
|= ind
->root
.ref_regular
;
1278 dir
->root
.ref_regular_nonweak
|= ind
->root
.ref_regular_nonweak
;
1279 dir
->root
.needs_plt
|= ind
->root
.needs_plt
;
1281 if (ind
->root
.root
.type
!= bfd_link_hash_indirect
)
1284 /* Copy over the got and plt data. This would have been done
1287 if (ind
->info
!= NULL
)
1289 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1295 dir
->info
= ind
->info
;
1296 dir
->count
= ind
->count
;
1297 dir
->sorted_count
= ind
->sorted_count
;
1298 dir
->size
= ind
->size
;
1302 ind
->sorted_count
= 0;
1305 /* Fix up the dyn_sym_info pointers to the global symbol. */
1306 for (count
= dir
->count
, dyn_i
= dir
->info
;
1309 dyn_i
->h
= &dir
->root
;
1312 /* Copy over the dynindx. */
1314 if (ind
->root
.dynindx
!= -1)
1316 if (dir
->root
.dynindx
!= -1)
1317 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1318 dir
->root
.dynstr_index
);
1319 dir
->root
.dynindx
= ind
->root
.dynindx
;
1320 dir
->root
.dynstr_index
= ind
->root
.dynstr_index
;
1321 ind
->root
.dynindx
= -1;
1322 ind
->root
.dynstr_index
= 0;
1327 elfNN_ia64_hash_hide_symbol (struct bfd_link_info
*info
,
1328 struct elf_link_hash_entry
*xh
,
1329 bfd_boolean force_local
)
1331 struct elfNN_ia64_link_hash_entry
*h
;
1332 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1335 h
= (struct elfNN_ia64_link_hash_entry
*)xh
;
1337 _bfd_elf_link_hash_hide_symbol (info
, &h
->root
, force_local
);
1339 for (count
= h
->count
, dyn_i
= h
->info
;
1343 dyn_i
->want_plt2
= 0;
1344 dyn_i
->want_plt
= 0;
1348 /* Compute a hash of a local hash entry. */
1351 elfNN_ia64_local_htab_hash (const void *ptr
)
1353 struct elfNN_ia64_local_hash_entry
*entry
1354 = (struct elfNN_ia64_local_hash_entry
*) ptr
;
1356 return ELF_LOCAL_SYMBOL_HASH (entry
->id
, entry
->r_sym
);
1359 /* Compare local hash entries. */
1362 elfNN_ia64_local_htab_eq (const void *ptr1
, const void *ptr2
)
1364 struct elfNN_ia64_local_hash_entry
*entry1
1365 = (struct elfNN_ia64_local_hash_entry
*) ptr1
;
1366 struct elfNN_ia64_local_hash_entry
*entry2
1367 = (struct elfNN_ia64_local_hash_entry
*) ptr2
;
1369 return entry1
->id
== entry2
->id
&& entry1
->r_sym
== entry2
->r_sym
;
1372 /* Free the global elfNN_ia64_dyn_sym_info array. */
1375 elfNN_ia64_global_dyn_info_free (void **xentry
,
1376 void * unused ATTRIBUTE_UNUSED
)
1378 struct elfNN_ia64_link_hash_entry
*entry
1379 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1386 entry
->sorted_count
= 0;
1393 /* Free the local elfNN_ia64_dyn_sym_info array. */
1396 elfNN_ia64_local_dyn_info_free (void **slot
,
1397 void * unused ATTRIBUTE_UNUSED
)
1399 struct elfNN_ia64_local_hash_entry
*entry
1400 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1407 entry
->sorted_count
= 0;
1414 /* Destroy IA-64 linker hash table. */
1417 elfNN_ia64_link_hash_table_free (bfd
*obfd
)
1419 struct elfNN_ia64_link_hash_table
*ia64_info
1420 = (struct elfNN_ia64_link_hash_table
*) obfd
->link
.hash
;
1421 if (ia64_info
->loc_hash_table
)
1423 htab_traverse (ia64_info
->loc_hash_table
,
1424 elfNN_ia64_local_dyn_info_free
, NULL
);
1425 htab_delete (ia64_info
->loc_hash_table
);
1427 if (ia64_info
->loc_hash_memory
)
1428 objalloc_free ((struct objalloc
*) ia64_info
->loc_hash_memory
);
1429 elf_link_hash_traverse (&ia64_info
->root
,
1430 elfNN_ia64_global_dyn_info_free
, NULL
);
1431 _bfd_elf_link_hash_table_free (obfd
);
1434 /* Create the derived linker hash table. The IA-64 ELF port uses this
1435 derived hash table to keep information specific to the IA-64 ElF
1436 linker (without using static variables). */
1438 static struct bfd_link_hash_table
*
1439 elfNN_ia64_hash_table_create (bfd
*abfd
)
1441 struct elfNN_ia64_link_hash_table
*ret
;
1443 ret
= bfd_zmalloc ((bfd_size_type
) sizeof (*ret
));
1447 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1448 elfNN_ia64_new_elf_hash_entry
,
1449 sizeof (struct elfNN_ia64_link_hash_entry
),
1456 ret
->loc_hash_table
= htab_try_create (1024, elfNN_ia64_local_htab_hash
,
1457 elfNN_ia64_local_htab_eq
, NULL
);
1458 ret
->loc_hash_memory
= objalloc_create ();
1459 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
1461 elfNN_ia64_link_hash_table_free (abfd
);
1464 ret
->root
.root
.hash_table_free
= elfNN_ia64_link_hash_table_free
;
1466 return &ret
->root
.root
;
1469 /* Traverse both local and global hash tables. */
1471 struct elfNN_ia64_dyn_sym_traverse_data
1473 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *);
1478 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry
*xentry
,
1481 struct elfNN_ia64_link_hash_entry
*entry
1482 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1483 struct elfNN_ia64_dyn_sym_traverse_data
*data
1484 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1485 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1488 for (count
= entry
->count
, dyn_i
= entry
->info
;
1491 if (! (*data
->func
) (dyn_i
, data
->data
))
1497 elfNN_ia64_local_dyn_sym_thunk (void **slot
, void * xdata
)
1499 struct elfNN_ia64_local_hash_entry
*entry
1500 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1501 struct elfNN_ia64_dyn_sym_traverse_data
*data
1502 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1503 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1506 for (count
= entry
->count
, dyn_i
= entry
->info
;
1509 if (! (*data
->func
) (dyn_i
, data
->data
))
1515 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table
*ia64_info
,
1516 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
1519 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
1524 elf_link_hash_traverse (&ia64_info
->root
,
1525 elfNN_ia64_global_dyn_sym_thunk
, &xdata
);
1526 htab_traverse (ia64_info
->loc_hash_table
,
1527 elfNN_ia64_local_dyn_sym_thunk
, &xdata
);
1531 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1532 struct bfd_link_info
*info
)
1534 struct elfNN_ia64_link_hash_table
*ia64_info
;
1537 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1540 ia64_info
= elfNN_ia64_hash_table (info
);
1541 if (ia64_info
== NULL
)
1545 flagword flags
= bfd_get_section_flags (abfd
, ia64_info
->root
.sgot
);
1546 bfd_set_section_flags (abfd
, ia64_info
->root
.sgot
,
1547 SEC_SMALL_DATA
| flags
);
1548 /* The .got section is always aligned at 8 bytes. */
1549 if (! bfd_set_section_alignment (abfd
, ia64_info
->root
.sgot
, 3))
1553 if (!get_pltoff (abfd
, info
, ia64_info
))
1556 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1557 (SEC_ALLOC
| SEC_LOAD
1560 | SEC_LINKER_CREATED
1563 || !bfd_set_section_alignment (abfd
, s
, LOG_SECTION_ALIGN
))
1565 ia64_info
->rel_pltoff_sec
= s
;
1570 /* Find and/or create a hash entry for local symbol. */
1571 static struct elfNN_ia64_local_hash_entry
*
1572 get_local_sym_hash (struct elfNN_ia64_link_hash_table
*ia64_info
,
1573 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
1576 struct elfNN_ia64_local_hash_entry e
, *ret
;
1577 asection
*sec
= abfd
->sections
;
1578 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
1579 ELFNN_R_SYM (rel
->r_info
));
1583 e
.r_sym
= ELFNN_R_SYM (rel
->r_info
);
1584 slot
= htab_find_slot_with_hash (ia64_info
->loc_hash_table
, &e
, h
,
1585 create
? INSERT
: NO_INSERT
);
1591 return (struct elfNN_ia64_local_hash_entry
*) *slot
;
1593 ret
= (struct elfNN_ia64_local_hash_entry
*)
1594 objalloc_alloc ((struct objalloc
*) ia64_info
->loc_hash_memory
,
1595 sizeof (struct elfNN_ia64_local_hash_entry
));
1598 memset (ret
, 0, sizeof (*ret
));
1600 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1606 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1609 addend_compare (const void *xp
, const void *yp
)
1611 const struct elfNN_ia64_dyn_sym_info
*x
1612 = (const struct elfNN_ia64_dyn_sym_info
*) xp
;
1613 const struct elfNN_ia64_dyn_sym_info
*y
1614 = (const struct elfNN_ia64_dyn_sym_info
*) yp
;
1616 return x
->addend
< y
->addend
? -1 : x
->addend
> y
->addend
? 1 : 0;
1619 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1622 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
1625 bfd_vma curr
, prev
, got_offset
;
1626 unsigned int i
, kept
, dupes
, diff
, dest
, src
, len
;
1628 qsort (info
, count
, sizeof (*info
), addend_compare
);
1630 /* Find the first duplicate. */
1631 prev
= info
[0].addend
;
1632 got_offset
= info
[0].got_offset
;
1633 for (i
= 1; i
< count
; i
++)
1635 curr
= info
[i
].addend
;
1638 /* For duplicates, make sure that GOT_OFFSET is valid. */
1639 if (got_offset
== (bfd_vma
) -1)
1640 got_offset
= info
[i
].got_offset
;
1643 got_offset
= info
[i
].got_offset
;
1647 /* We may move a block of elements to here. */
1650 /* Remove duplicates. */
1655 /* For duplicates, make sure that the kept one has a valid
1658 if (got_offset
!= (bfd_vma
) -1)
1659 info
[kept
].got_offset
= got_offset
;
1661 curr
= info
[i
].addend
;
1662 got_offset
= info
[i
].got_offset
;
1664 /* Move a block of elements whose first one is different from
1668 for (src
= i
+ 1; src
< count
; src
++)
1670 if (info
[src
].addend
!= curr
)
1672 /* For duplicates, make sure that GOT_OFFSET is
1674 if (got_offset
== (bfd_vma
) -1)
1675 got_offset
= info
[src
].got_offset
;
1678 /* Make sure that the kept one has a valid got_offset. */
1679 if (got_offset
!= (bfd_vma
) -1)
1680 info
[kept
].got_offset
= got_offset
;
1688 /* Find the next duplicate. SRC will be kept. */
1689 prev
= info
[src
].addend
;
1690 got_offset
= info
[src
].got_offset
;
1691 for (dupes
= src
+ 1; dupes
< count
; dupes
++)
1693 curr
= info
[dupes
].addend
;
1696 /* Make sure that got_offset is valid. */
1697 if (got_offset
== (bfd_vma
) -1)
1698 got_offset
= info
[dupes
].got_offset
;
1700 /* For duplicates, make sure that the kept one has
1701 a valid got_offset. */
1702 if (got_offset
!= (bfd_vma
) -1)
1703 info
[dupes
- 1].got_offset
= got_offset
;
1706 got_offset
= info
[dupes
].got_offset
;
1710 /* How much to move. */
1714 if (len
== 1 && dupes
< count
)
1716 /* If we only move 1 element, we combine it with the next
1717 one. There must be at least a duplicate. Find the
1718 next different one. */
1719 for (diff
= dupes
+ 1, src
++; diff
< count
; diff
++, src
++)
1721 if (info
[diff
].addend
!= curr
)
1723 /* Make sure that got_offset is valid. */
1724 if (got_offset
== (bfd_vma
) -1)
1725 got_offset
= info
[diff
].got_offset
;
1728 /* Makre sure that the last duplicated one has an valid
1730 BFD_ASSERT (curr
== prev
);
1731 if (got_offset
!= (bfd_vma
) -1)
1732 info
[diff
- 1].got_offset
= got_offset
;
1736 /* Find the next duplicate. Track the current valid
1738 prev
= info
[diff
].addend
;
1739 got_offset
= info
[diff
].got_offset
;
1740 for (dupes
= diff
+ 1; dupes
< count
; dupes
++)
1742 curr
= info
[dupes
].addend
;
1745 /* For duplicates, make sure that GOT_OFFSET
1747 if (got_offset
== (bfd_vma
) -1)
1748 got_offset
= info
[dupes
].got_offset
;
1751 got_offset
= info
[dupes
].got_offset
;
1756 len
= diff
- src
+ 1;
1761 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1770 /* When we get here, either there is no duplicate at all or
1771 the only duplicate is the last element. */
1774 /* If the last element is a duplicate, make sure that the
1775 kept one has a valid got_offset. We also update count. */
1776 if (got_offset
!= (bfd_vma
) -1)
1777 info
[dest
- 1].got_offset
= got_offset
;
1785 /* Find and/or create a descriptor for dynamic symbol info. This will
1786 vary based on global or local symbol, and the addend to the reloc.
1788 We don't sort when inserting. Also, we sort and eliminate
1789 duplicates if there is an unsorted section. Typically, this will
1790 only happen once, because we do all insertions before lookups. We
1791 then use bsearch to do a lookup. This also allows lookups to be
1792 fast. So we have fast insertion (O(log N) due to duplicate check),
1793 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1794 Previously, all lookups were O(N) because of the use of the linked
1795 list and also all insertions were O(N) because of the check for
1796 duplicates. There are some complications here because the array
1797 size grows occasionally, which may add an O(N) factor, but this
1798 should be rare. Also, we free the excess array allocation, which
1799 requires a copy which is O(N), but this only happens once. */
1801 static struct elfNN_ia64_dyn_sym_info
*
1802 get_dyn_sym_info (struct elfNN_ia64_link_hash_table
*ia64_info
,
1803 struct elf_link_hash_entry
*h
, bfd
*abfd
,
1804 const Elf_Internal_Rela
*rel
, bfd_boolean create
)
1806 struct elfNN_ia64_dyn_sym_info
**info_p
, *info
, *dyn_i
, key
;
1807 unsigned int *count_p
, *sorted_count_p
, *size_p
;
1808 unsigned int count
, sorted_count
, size
;
1809 bfd_vma addend
= rel
? rel
->r_addend
: 0;
1814 struct elfNN_ia64_link_hash_entry
*global_h
;
1816 global_h
= (struct elfNN_ia64_link_hash_entry
*) h
;
1817 info_p
= &global_h
->info
;
1818 count_p
= &global_h
->count
;
1819 sorted_count_p
= &global_h
->sorted_count
;
1820 size_p
= &global_h
->size
;
1824 struct elfNN_ia64_local_hash_entry
*loc_h
;
1826 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1829 BFD_ASSERT (!create
);
1833 info_p
= &loc_h
->info
;
1834 count_p
= &loc_h
->count
;
1835 sorted_count_p
= &loc_h
->sorted_count
;
1836 size_p
= &loc_h
->size
;
1840 sorted_count
= *sorted_count_p
;
1845 /* When we create the array, we don't check for duplicates,
1846 except in the previously sorted section if one exists, and
1847 against the last inserted entry. This allows insertions to
1853 /* Try bsearch first on the sorted section. */
1854 key
.addend
= addend
;
1855 dyn_i
= bsearch (&key
, info
, sorted_count
,
1856 sizeof (*info
), addend_compare
);
1864 /* Do a quick check for the last inserted entry. */
1865 dyn_i
= info
+ count
- 1;
1866 if (dyn_i
->addend
== addend
)
1874 /* It is the very first element. We create the array of size
1877 amt
= size
* sizeof (*info
);
1878 info
= bfd_malloc (amt
);
1880 else if (size
<= count
)
1882 /* We double the array size every time when we reach the
1885 amt
= size
* sizeof (*info
);
1886 info
= bfd_realloc (info
, amt
);
1897 /* Append the new one to the array. */
1898 dyn_i
= info
+ count
;
1899 memset (dyn_i
, 0, sizeof (*dyn_i
));
1900 dyn_i
->got_offset
= (bfd_vma
) -1;
1901 dyn_i
->addend
= addend
;
1903 /* We increment count only since the new ones are unsorted and
1904 may have duplicate. */
1909 /* It is a lookup without insertion. Sort array if part of the
1910 array isn't sorted. */
1911 if (count
!= sorted_count
)
1913 count
= sort_dyn_sym_info (info
, count
);
1915 *sorted_count_p
= count
;
1918 /* Free unused memory. */
1921 amt
= count
* sizeof (*info
);
1922 info
= bfd_malloc (amt
);
1925 memcpy (info
, *info_p
, amt
);
1932 key
.addend
= addend
;
1933 dyn_i
= bsearch (&key
, info
, count
,
1934 sizeof (*info
), addend_compare
);
1941 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1942 struct elfNN_ia64_link_hash_table
*ia64_info
)
1947 got
= ia64_info
->root
.sgot
;
1952 dynobj
= ia64_info
->root
.dynobj
;
1954 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1955 if (!_bfd_elf_create_got_section (dynobj
, info
))
1958 got
= ia64_info
->root
.sgot
;
1960 /* The .got section is always aligned at 8 bytes. */
1961 if (!bfd_set_section_alignment (abfd
, got
, 3))
1964 flags
= bfd_get_section_flags (abfd
, got
);
1965 if (! bfd_set_section_flags (abfd
, got
, SEC_SMALL_DATA
| flags
))
1972 /* Create function descriptor section (.opd). This section is called .opd
1973 because it contains "official procedure descriptors". The "official"
1974 refers to the fact that these descriptors are used when taking the address
1975 of a procedure, thus ensuring a unique address for each procedure. */
1978 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1979 struct elfNN_ia64_link_hash_table
*ia64_info
)
1984 fptr
= ia64_info
->fptr_sec
;
1987 dynobj
= ia64_info
->root
.dynobj
;
1989 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1991 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
1996 | (bfd_link_pie (info
)
1998 | SEC_LINKER_CREATED
));
2000 || !bfd_set_section_alignment (abfd
, fptr
, 4))
2006 ia64_info
->fptr_sec
= fptr
;
2008 if (bfd_link_pie (info
))
2011 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2012 (SEC_ALLOC
| SEC_LOAD
2015 | SEC_LINKER_CREATED
2017 if (fptr_rel
== NULL
2018 || !bfd_set_section_alignment (abfd
, fptr_rel
,
2025 ia64_info
->rel_fptr_sec
= fptr_rel
;
2033 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2034 struct elfNN_ia64_link_hash_table
*ia64_info
)
2039 pltoff
= ia64_info
->pltoff_sec
;
2042 dynobj
= ia64_info
->root
.dynobj
;
2044 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2046 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2047 ELF_STRING_ia64_pltoff
,
2053 | SEC_LINKER_CREATED
));
2055 || !bfd_set_section_alignment (abfd
, pltoff
, 4))
2061 ia64_info
->pltoff_sec
= pltoff
;
2068 get_reloc_section (bfd
*abfd
,
2069 struct elfNN_ia64_link_hash_table
*ia64_info
,
2070 asection
*sec
, bfd_boolean create
)
2072 const char *srel_name
;
2076 srel_name
= (bfd_elf_string_from_elf_section
2077 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
2078 _bfd_elf_single_rel_hdr (sec
)->sh_name
));
2079 if (srel_name
== NULL
)
2082 dynobj
= ia64_info
->root
.dynobj
;
2084 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2086 srel
= bfd_get_linker_section (dynobj
, srel_name
);
2087 if (srel
== NULL
&& create
)
2089 srel
= bfd_make_section_anyway_with_flags (dynobj
, srel_name
,
2090 (SEC_ALLOC
| SEC_LOAD
2093 | SEC_LINKER_CREATED
2096 || !bfd_set_section_alignment (dynobj
, srel
,
2105 count_dyn_reloc (bfd
*abfd
, struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2106 asection
*srel
, int type
, bfd_boolean reltext
)
2108 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2110 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2111 if (rent
->srel
== srel
&& rent
->type
== type
)
2116 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2117 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2121 rent
->next
= dyn_i
->reloc_entries
;
2125 dyn_i
->reloc_entries
= rent
;
2127 rent
->reltext
= reltext
;
2134 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2136 const Elf_Internal_Rela
*relocs
)
2138 struct elfNN_ia64_link_hash_table
*ia64_info
;
2139 const Elf_Internal_Rela
*relend
;
2140 Elf_Internal_Shdr
*symtab_hdr
;
2141 const Elf_Internal_Rela
*rel
;
2142 asection
*got
, *fptr
, *srel
, *pltoff
;
2151 NEED_LTOFF_FPTR
= 128,
2157 struct elf_link_hash_entry
*h
;
2158 unsigned long r_symndx
;
2159 bfd_boolean maybe_dynamic
;
2161 if (bfd_link_relocatable (info
))
2164 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2165 ia64_info
= elfNN_ia64_hash_table (info
);
2166 if (ia64_info
== NULL
)
2169 got
= fptr
= srel
= pltoff
= NULL
;
2171 relend
= relocs
+ sec
->reloc_count
;
2173 /* We scan relocations first to create dynamic relocation arrays. We
2174 modified get_dyn_sym_info to allow fast insertion and support fast
2175 lookup in the next loop. */
2176 for (rel
= relocs
; rel
< relend
; ++rel
)
2178 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2179 if (r_symndx
>= symtab_hdr
->sh_info
)
2181 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2182 h
= elf_sym_hashes (abfd
)[indx
];
2183 while (h
->root
.type
== bfd_link_hash_indirect
2184 || h
->root
.type
== bfd_link_hash_warning
)
2185 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2190 /* We can only get preliminary data on whether a symbol is
2191 locally or externally defined, as not all of the input files
2192 have yet been processed. Do something with what we know, as
2193 this may help reduce memory usage and processing time later. */
2194 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2195 && (!SYMBOLIC_BIND (info
, h
)
2196 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2198 || h
->root
.type
== bfd_link_hash_defweak
));
2201 switch (ELFNN_R_TYPE (rel
->r_info
))
2203 case R_IA64_TPREL64MSB
:
2204 case R_IA64_TPREL64LSB
:
2205 if (bfd_link_pic (info
) || maybe_dynamic
)
2206 need_entry
= NEED_DYNREL
;
2209 case R_IA64_LTOFF_TPREL22
:
2210 need_entry
= NEED_TPREL
;
2211 if (bfd_link_pic (info
))
2212 info
->flags
|= DF_STATIC_TLS
;
2215 case R_IA64_DTPREL32MSB
:
2216 case R_IA64_DTPREL32LSB
:
2217 case R_IA64_DTPREL64MSB
:
2218 case R_IA64_DTPREL64LSB
:
2219 if (bfd_link_pic (info
) || maybe_dynamic
)
2220 need_entry
= NEED_DYNREL
;
2223 case R_IA64_LTOFF_DTPREL22
:
2224 need_entry
= NEED_DTPREL
;
2227 case R_IA64_DTPMOD64MSB
:
2228 case R_IA64_DTPMOD64LSB
:
2229 if (bfd_link_pic (info
) || maybe_dynamic
)
2230 need_entry
= NEED_DYNREL
;
2233 case R_IA64_LTOFF_DTPMOD22
:
2234 need_entry
= NEED_DTPMOD
;
2237 case R_IA64_LTOFF_FPTR22
:
2238 case R_IA64_LTOFF_FPTR64I
:
2239 case R_IA64_LTOFF_FPTR32MSB
:
2240 case R_IA64_LTOFF_FPTR32LSB
:
2241 case R_IA64_LTOFF_FPTR64MSB
:
2242 case R_IA64_LTOFF_FPTR64LSB
:
2243 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2246 case R_IA64_FPTR64I
:
2247 case R_IA64_FPTR32MSB
:
2248 case R_IA64_FPTR32LSB
:
2249 case R_IA64_FPTR64MSB
:
2250 case R_IA64_FPTR64LSB
:
2251 if (bfd_link_pic (info
) || h
)
2252 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2254 need_entry
= NEED_FPTR
;
2257 case R_IA64_LTOFF22
:
2258 case R_IA64_LTOFF64I
:
2259 need_entry
= NEED_GOT
;
2262 case R_IA64_LTOFF22X
:
2263 need_entry
= NEED_GOTX
;
2266 case R_IA64_PLTOFF22
:
2267 case R_IA64_PLTOFF64I
:
2268 case R_IA64_PLTOFF64MSB
:
2269 case R_IA64_PLTOFF64LSB
:
2270 need_entry
= NEED_PLTOFF
;
2274 need_entry
|= NEED_MIN_PLT
;
2278 (*info
->callbacks
->warning
)
2279 (info
, _("@pltoff reloc against local symbol"), 0,
2280 abfd
, 0, (bfd_vma
) 0);
2284 case R_IA64_PCREL21B
:
2285 case R_IA64_PCREL60B
:
2286 /* Depending on where this symbol is defined, we may or may not
2287 need a full plt entry. Only skip if we know we'll not need
2288 the entry -- static or symbolic, and the symbol definition
2289 has already been seen. */
2290 if (maybe_dynamic
&& rel
->r_addend
== 0)
2291 need_entry
= NEED_FULL_PLT
;
2297 case R_IA64_DIR32MSB
:
2298 case R_IA64_DIR32LSB
:
2299 case R_IA64_DIR64MSB
:
2300 case R_IA64_DIR64LSB
:
2301 /* Shared objects will always need at least a REL relocation. */
2302 if (bfd_link_pic (info
) || maybe_dynamic
)
2303 need_entry
= NEED_DYNREL
;
2306 case R_IA64_IPLTMSB
:
2307 case R_IA64_IPLTLSB
:
2308 /* Shared objects will always need at least a REL relocation. */
2309 if (bfd_link_pic (info
) || maybe_dynamic
)
2310 need_entry
= NEED_DYNREL
;
2313 case R_IA64_PCREL22
:
2314 case R_IA64_PCREL64I
:
2315 case R_IA64_PCREL32MSB
:
2316 case R_IA64_PCREL32LSB
:
2317 case R_IA64_PCREL64MSB
:
2318 case R_IA64_PCREL64LSB
:
2320 need_entry
= NEED_DYNREL
;
2327 if ((need_entry
& NEED_FPTR
) != 0
2330 (*info
->callbacks
->warning
)
2331 (info
, _("non-zero addend in @fptr reloc"), 0,
2332 abfd
, 0, (bfd_vma
) 0);
2335 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, TRUE
) == NULL
)
2339 /* Now, we only do lookup without insertion, which is very fast
2340 with the modified get_dyn_sym_info. */
2341 for (rel
= relocs
; rel
< relend
; ++rel
)
2343 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2344 int dynrel_type
= R_IA64_NONE
;
2346 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2347 if (r_symndx
>= symtab_hdr
->sh_info
)
2349 /* We're dealing with a global symbol -- find its hash entry
2350 and mark it as being referenced. */
2351 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2352 h
= elf_sym_hashes (abfd
)[indx
];
2353 while (h
->root
.type
== bfd_link_hash_indirect
2354 || h
->root
.type
== bfd_link_hash_warning
)
2355 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2357 /* PR15323, ref flags aren't set for references in the same
2359 h
->root
.non_ir_ref
= 1;
2365 /* We can only get preliminary data on whether a symbol is
2366 locally or externally defined, as not all of the input files
2367 have yet been processed. Do something with what we know, as
2368 this may help reduce memory usage and processing time later. */
2369 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2370 && (!SYMBOLIC_BIND (info
, h
)
2371 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2373 || h
->root
.type
== bfd_link_hash_defweak
));
2376 switch (ELFNN_R_TYPE (rel
->r_info
))
2378 case R_IA64_TPREL64MSB
:
2379 case R_IA64_TPREL64LSB
:
2380 if (bfd_link_pic (info
) || maybe_dynamic
)
2381 need_entry
= NEED_DYNREL
;
2382 dynrel_type
= R_IA64_TPREL64LSB
;
2383 if (bfd_link_pic (info
))
2384 info
->flags
|= DF_STATIC_TLS
;
2387 case R_IA64_LTOFF_TPREL22
:
2388 need_entry
= NEED_TPREL
;
2389 if (bfd_link_pic (info
))
2390 info
->flags
|= DF_STATIC_TLS
;
2393 case R_IA64_DTPREL32MSB
:
2394 case R_IA64_DTPREL32LSB
:
2395 case R_IA64_DTPREL64MSB
:
2396 case R_IA64_DTPREL64LSB
:
2397 if (bfd_link_pic (info
) || maybe_dynamic
)
2398 need_entry
= NEED_DYNREL
;
2399 dynrel_type
= R_IA64_DTPRELNNLSB
;
2402 case R_IA64_LTOFF_DTPREL22
:
2403 need_entry
= NEED_DTPREL
;
2406 case R_IA64_DTPMOD64MSB
:
2407 case R_IA64_DTPMOD64LSB
:
2408 if (bfd_link_pic (info
) || maybe_dynamic
)
2409 need_entry
= NEED_DYNREL
;
2410 dynrel_type
= R_IA64_DTPMOD64LSB
;
2413 case R_IA64_LTOFF_DTPMOD22
:
2414 need_entry
= NEED_DTPMOD
;
2417 case R_IA64_LTOFF_FPTR22
:
2418 case R_IA64_LTOFF_FPTR64I
:
2419 case R_IA64_LTOFF_FPTR32MSB
:
2420 case R_IA64_LTOFF_FPTR32LSB
:
2421 case R_IA64_LTOFF_FPTR64MSB
:
2422 case R_IA64_LTOFF_FPTR64LSB
:
2423 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2426 case R_IA64_FPTR64I
:
2427 case R_IA64_FPTR32MSB
:
2428 case R_IA64_FPTR32LSB
:
2429 case R_IA64_FPTR64MSB
:
2430 case R_IA64_FPTR64LSB
:
2431 if (bfd_link_pic (info
) || h
)
2432 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2434 need_entry
= NEED_FPTR
;
2435 dynrel_type
= R_IA64_FPTRNNLSB
;
2438 case R_IA64_LTOFF22
:
2439 case R_IA64_LTOFF64I
:
2440 need_entry
= NEED_GOT
;
2443 case R_IA64_LTOFF22X
:
2444 need_entry
= NEED_GOTX
;
2447 case R_IA64_PLTOFF22
:
2448 case R_IA64_PLTOFF64I
:
2449 case R_IA64_PLTOFF64MSB
:
2450 case R_IA64_PLTOFF64LSB
:
2451 need_entry
= NEED_PLTOFF
;
2455 need_entry
|= NEED_MIN_PLT
;
2459 case R_IA64_PCREL21B
:
2460 case R_IA64_PCREL60B
:
2461 /* Depending on where this symbol is defined, we may or may not
2462 need a full plt entry. Only skip if we know we'll not need
2463 the entry -- static or symbolic, and the symbol definition
2464 has already been seen. */
2465 if (maybe_dynamic
&& rel
->r_addend
== 0)
2466 need_entry
= NEED_FULL_PLT
;
2472 case R_IA64_DIR32MSB
:
2473 case R_IA64_DIR32LSB
:
2474 case R_IA64_DIR64MSB
:
2475 case R_IA64_DIR64LSB
:
2476 /* Shared objects will always need at least a REL relocation. */
2477 if (bfd_link_pic (info
) || maybe_dynamic
)
2478 need_entry
= NEED_DYNREL
;
2479 dynrel_type
= R_IA64_DIRNNLSB
;
2482 case R_IA64_IPLTMSB
:
2483 case R_IA64_IPLTLSB
:
2484 /* Shared objects will always need at least a REL relocation. */
2485 if (bfd_link_pic (info
) || maybe_dynamic
)
2486 need_entry
= NEED_DYNREL
;
2487 dynrel_type
= R_IA64_IPLTLSB
;
2490 case R_IA64_PCREL22
:
2491 case R_IA64_PCREL64I
:
2492 case R_IA64_PCREL32MSB
:
2493 case R_IA64_PCREL32LSB
:
2494 case R_IA64_PCREL64MSB
:
2495 case R_IA64_PCREL64LSB
:
2497 need_entry
= NEED_DYNREL
;
2498 dynrel_type
= R_IA64_PCRELNNLSB
;
2505 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, FALSE
);
2507 /* Record whether or not this is a local symbol. */
2510 /* Create what's needed. */
2511 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2512 | NEED_DTPMOD
| NEED_DTPREL
))
2516 got
= get_got (abfd
, info
, ia64_info
);
2520 if (need_entry
& NEED_GOT
)
2521 dyn_i
->want_got
= 1;
2522 if (need_entry
& NEED_GOTX
)
2523 dyn_i
->want_gotx
= 1;
2524 if (need_entry
& NEED_TPREL
)
2525 dyn_i
->want_tprel
= 1;
2526 if (need_entry
& NEED_DTPMOD
)
2527 dyn_i
->want_dtpmod
= 1;
2528 if (need_entry
& NEED_DTPREL
)
2529 dyn_i
->want_dtprel
= 1;
2531 if (need_entry
& NEED_FPTR
)
2535 fptr
= get_fptr (abfd
, info
, ia64_info
);
2540 /* FPTRs for shared libraries are allocated by the dynamic
2541 linker. Make sure this local symbol will appear in the
2542 dynamic symbol table. */
2543 if (!h
&& bfd_link_pic (info
))
2545 if (! (bfd_elf_link_record_local_dynamic_symbol
2546 (info
, abfd
, (long) r_symndx
)))
2550 dyn_i
->want_fptr
= 1;
2552 if (need_entry
& NEED_LTOFF_FPTR
)
2553 dyn_i
->want_ltoff_fptr
= 1;
2554 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2556 if (!ia64_info
->root
.dynobj
)
2557 ia64_info
->root
.dynobj
= abfd
;
2559 dyn_i
->want_plt
= 1;
2561 if (need_entry
& NEED_FULL_PLT
)
2562 dyn_i
->want_plt2
= 1;
2563 if (need_entry
& NEED_PLTOFF
)
2565 /* This is needed here, in case @pltoff is used in a non-shared
2569 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2574 dyn_i
->want_pltoff
= 1;
2576 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2580 srel
= get_reloc_section (abfd
, ia64_info
, sec
, TRUE
);
2584 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2585 (sec
->flags
& SEC_READONLY
) != 0))
2593 /* For cleanliness, and potentially faster dynamic loading, allocate
2594 external GOT entries first. */
2597 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2600 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2602 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2603 && ! dyn_i
->want_fptr
2604 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2606 dyn_i
->got_offset
= x
->ofs
;
2609 if (dyn_i
->want_tprel
)
2611 dyn_i
->tprel_offset
= x
->ofs
;
2614 if (dyn_i
->want_dtpmod
)
2616 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2618 dyn_i
->dtpmod_offset
= x
->ofs
;
2623 struct elfNN_ia64_link_hash_table
*ia64_info
;
2625 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2626 if (ia64_info
== NULL
)
2629 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2631 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2634 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2637 if (dyn_i
->want_dtprel
)
2639 dyn_i
->dtprel_offset
= x
->ofs
;
2645 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2648 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2651 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2655 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2657 dyn_i
->got_offset
= x
->ofs
;
2663 /* Lastly, allocate all the GOT entries for local data. */
2666 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2669 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2671 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2672 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2674 dyn_i
->got_offset
= x
->ofs
;
2680 /* Search for the index of a global symbol in it's defining object file. */
2683 global_sym_index (struct elf_link_hash_entry
*h
)
2685 struct elf_link_hash_entry
**p
;
2688 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2689 || h
->root
.type
== bfd_link_hash_defweak
);
2691 obj
= h
->root
.u
.def
.section
->owner
;
2692 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2695 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2698 /* Allocate function descriptors. We can do these for every function
2699 in a main executable that is not exported. */
2702 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2704 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2706 if (dyn_i
->want_fptr
)
2708 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2711 while (h
->root
.type
== bfd_link_hash_indirect
2712 || h
->root
.type
== bfd_link_hash_warning
)
2713 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2715 if (!bfd_link_executable (x
->info
)
2717 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2718 || (h
->root
.type
!= bfd_link_hash_undefweak
2719 && h
->root
.type
!= bfd_link_hash_undefined
)))
2721 if (h
&& h
->dynindx
== -1)
2723 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2724 || (h
->root
.type
== bfd_link_hash_defweak
));
2726 if (!bfd_elf_link_record_local_dynamic_symbol
2727 (x
->info
, h
->root
.u
.def
.section
->owner
,
2728 global_sym_index (h
)))
2732 dyn_i
->want_fptr
= 0;
2734 else if (h
== NULL
|| h
->dynindx
== -1)
2736 dyn_i
->fptr_offset
= x
->ofs
;
2740 dyn_i
->want_fptr
= 0;
2745 /* Allocate all the minimal PLT entries. */
2748 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2751 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2753 if (dyn_i
->want_plt
)
2755 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2758 while (h
->root
.type
== bfd_link_hash_indirect
2759 || h
->root
.type
== bfd_link_hash_warning
)
2760 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2762 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2763 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2765 bfd_size_type offset
= x
->ofs
;
2767 offset
= PLT_HEADER_SIZE
;
2768 dyn_i
->plt_offset
= offset
;
2769 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2771 dyn_i
->want_pltoff
= 1;
2775 dyn_i
->want_plt
= 0;
2776 dyn_i
->want_plt2
= 0;
2782 /* Allocate all the full PLT entries. */
2785 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2788 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2790 if (dyn_i
->want_plt2
)
2792 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2793 bfd_size_type ofs
= x
->ofs
;
2795 dyn_i
->plt2_offset
= ofs
;
2796 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2798 while (h
->root
.type
== bfd_link_hash_indirect
2799 || h
->root
.type
== bfd_link_hash_warning
)
2800 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2801 dyn_i
->h
->plt
.offset
= ofs
;
2806 /* Allocate all the PLTOFF entries requested by relocations and
2807 plt entries. We can't share space with allocated FPTR entries,
2808 because the latter are not necessarily addressable by the GP.
2809 ??? Relaxation might be able to determine that they are. */
2812 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2815 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2817 if (dyn_i
->want_pltoff
)
2819 dyn_i
->pltoff_offset
= x
->ofs
;
2825 /* Allocate dynamic relocations for those symbols that turned out
2829 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2832 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2833 struct elfNN_ia64_link_hash_table
*ia64_info
;
2834 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2835 bfd_boolean dynamic_symbol
, shared
, resolved_zero
;
2837 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2838 if (ia64_info
== NULL
)
2841 /* Note that this can't be used in relation to FPTR relocs below. */
2842 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2844 shared
= bfd_link_pic (x
->info
);
2845 resolved_zero
= (dyn_i
->h
2846 && ELF_ST_VISIBILITY (dyn_i
->h
->other
)
2847 && dyn_i
->h
->root
.type
== bfd_link_hash_undefweak
);
2849 /* Take care of the GOT and PLT relocations. */
2852 && (dynamic_symbol
|| shared
)
2853 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2854 || (dyn_i
->want_ltoff_fptr
2856 && dyn_i
->h
->dynindx
!= -1))
2858 if (!dyn_i
->want_ltoff_fptr
2859 || !bfd_link_pie (x
->info
)
2861 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2862 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2864 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2865 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2866 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2867 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2868 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2869 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2874 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2876 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2877 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2880 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2882 bfd_size_type t
= 0;
2884 /* Dynamic symbols get one IPLT relocation. Local symbols in
2885 shared libraries get two REL relocations. Local symbols in
2886 main applications get nothing. */
2888 t
= sizeof (ElfNN_External_Rela
);
2890 t
= 2 * sizeof (ElfNN_External_Rela
);
2892 ia64_info
->rel_pltoff_sec
->size
+= t
;
2895 /* Take care of the normal data relocations. */
2897 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2899 int count
= rent
->count
;
2903 case R_IA64_FPTR32LSB
:
2904 case R_IA64_FPTR64LSB
:
2905 /* Allocate one iff !want_fptr and not PIE, which by this point
2906 will be true only if we're actually allocating one statically
2907 in the main executable. Position independent executables
2908 need a relative reloc. */
2909 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2912 case R_IA64_PCREL32LSB
:
2913 case R_IA64_PCREL64LSB
:
2914 if (!dynamic_symbol
)
2917 case R_IA64_DIR32LSB
:
2918 case R_IA64_DIR64LSB
:
2919 if (!dynamic_symbol
&& !shared
)
2922 case R_IA64_IPLTLSB
:
2923 if (!dynamic_symbol
&& !shared
)
2925 /* Use two REL relocations for IPLT relocations
2926 against local symbols. */
2927 if (!dynamic_symbol
)
2930 case R_IA64_DTPREL32LSB
:
2931 case R_IA64_TPREL64LSB
:
2932 case R_IA64_DTPREL64LSB
:
2933 case R_IA64_DTPMOD64LSB
:
2939 ia64_info
->reltext
= 1;
2940 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2947 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2948 struct elf_link_hash_entry
*h
)
2950 /* ??? Undefined symbols with PLT entries should be re-defined
2951 to be the PLT entry. */
2953 /* If this is a weak symbol, and there is a real definition, the
2954 processor independent code will have arranged for us to see the
2955 real definition first, and we can just use the same value. */
2956 if (h
->u
.weakdef
!= NULL
)
2958 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2959 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2960 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2961 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2965 /* If this is a reference to a symbol defined by a dynamic object which
2966 is not a function, we might allocate the symbol in our .dynbss section
2967 and allocate a COPY dynamic relocation.
2969 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2976 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2977 struct bfd_link_info
*info
)
2979 struct elfNN_ia64_allocate_data data
;
2980 struct elfNN_ia64_link_hash_table
*ia64_info
;
2983 bfd_boolean relplt
= FALSE
;
2985 dynobj
= elf_hash_table(info
)->dynobj
;
2986 ia64_info
= elfNN_ia64_hash_table (info
);
2987 if (ia64_info
== NULL
)
2989 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
2990 BFD_ASSERT(dynobj
!= NULL
);
2993 /* Set the contents of the .interp section to the interpreter. */
2994 if (ia64_info
->root
.dynamic_sections_created
2995 && bfd_link_executable (info
) && !info
->nointerp
)
2997 sec
= bfd_get_linker_section (dynobj
, ".interp");
2998 BFD_ASSERT (sec
!= NULL
);
2999 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3000 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3003 /* Allocate the GOT entries. */
3005 if (ia64_info
->root
.sgot
)
3008 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3009 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3010 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3011 ia64_info
->root
.sgot
->size
= data
.ofs
;
3014 /* Allocate the FPTR entries. */
3016 if (ia64_info
->fptr_sec
)
3019 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3020 ia64_info
->fptr_sec
->size
= data
.ofs
;
3023 /* Now that we've seen all of the input files, we can decide which
3024 symbols need plt entries. Allocate the minimal PLT entries first.
3025 We do this even though dynamic_sections_created may be FALSE, because
3026 this has the side-effect of clearing want_plt and want_plt2. */
3029 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3031 ia64_info
->minplt_entries
= 0;
3034 ia64_info
->minplt_entries
3035 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3038 /* Align the pointer for the plt2 entries. */
3039 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3041 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3042 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3044 /* FIXME: we always reserve the memory for dynamic linker even if
3045 there are no PLT entries since dynamic linker may assume the
3046 reserved memory always exists. */
3048 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3050 ia64_info
->root
.splt
->size
= data
.ofs
;
3052 /* If we've got a .plt, we need some extra memory for the dynamic
3053 linker. We stuff these in .got.plt. */
3054 sec
= bfd_get_linker_section (dynobj
, ".got.plt");
3055 sec
->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 (elf_hash_table (info
)->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)
3684 (*_bfd_error_handler
)
3685 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3686 bfd_get_filename (abfd
),
3687 (unsigned long) (max_short_vma
- min_short_vma
));
3690 else if ((gp_val
> min_short_vma
3691 && gp_val
- min_short_vma
> 0x200000)
3692 || (gp_val
< max_short_vma
3693 && max_short_vma
- gp_val
>= 0x200000))
3695 (*_bfd_error_handler
)
3696 (_("%s: __gp does not cover short data segment"),
3697 bfd_get_filename (abfd
));
3702 _bfd_set_gp_value (abfd
, gp_val
);
3708 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3710 struct elfNN_ia64_link_hash_table
*ia64_info
;
3711 asection
*unwind_output_sec
;
3713 ia64_info
= elfNN_ia64_hash_table (info
);
3714 if (ia64_info
== NULL
)
3717 /* Make sure we've got ourselves a nice fat __gp value. */
3718 if (!bfd_link_relocatable (info
))
3721 struct elf_link_hash_entry
*gp
;
3723 /* We assume after gp is set, section size will only decrease. We
3724 need to adjust gp for it. */
3725 _bfd_set_gp_value (abfd
, 0);
3726 if (! elfNN_ia64_choose_gp (abfd
, info
, TRUE
))
3728 gp_val
= _bfd_get_gp_value (abfd
);
3730 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3734 gp
->root
.type
= bfd_link_hash_defined
;
3735 gp
->root
.u
.def
.value
= gp_val
;
3736 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3740 /* If we're producing a final executable, we need to sort the contents
3741 of the .IA_64.unwind section. Force this section to be relocated
3742 into memory rather than written immediately to the output file. */
3743 unwind_output_sec
= NULL
;
3744 if (!bfd_link_relocatable (info
))
3746 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3749 unwind_output_sec
= s
->output_section
;
3750 unwind_output_sec
->contents
3751 = bfd_malloc (unwind_output_sec
->size
);
3752 if (unwind_output_sec
->contents
== NULL
)
3757 /* Invoke the regular ELF backend linker to do all the work. */
3758 if (!bfd_elf_final_link (abfd
, info
))
3761 if (unwind_output_sec
)
3763 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3764 qsort (unwind_output_sec
->contents
,
3765 (size_t) (unwind_output_sec
->size
/ 24),
3767 elfNN_ia64_unwind_entry_compare
);
3769 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3770 unwind_output_sec
->contents
, (bfd_vma
) 0,
3771 unwind_output_sec
->size
))
3779 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3780 struct bfd_link_info
*info
,
3782 asection
*input_section
,
3784 Elf_Internal_Rela
*relocs
,
3785 Elf_Internal_Sym
*local_syms
,
3786 asection
**local_sections
)
3788 struct elfNN_ia64_link_hash_table
*ia64_info
;
3789 Elf_Internal_Shdr
*symtab_hdr
;
3790 Elf_Internal_Rela
*rel
;
3791 Elf_Internal_Rela
*relend
;
3793 bfd_boolean ret_val
= TRUE
; /* for non-fatal errors */
3796 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3797 ia64_info
= elfNN_ia64_hash_table (info
);
3798 if (ia64_info
== NULL
)
3801 /* Infect various flags from the input section to the output section. */
3802 if (bfd_link_relocatable (info
))
3806 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3807 flags
&= SHF_IA_64_NORECOV
;
3809 elf_section_data(input_section
->output_section
)
3810 ->this_hdr
.sh_flags
|= flags
;
3813 gp_val
= _bfd_get_gp_value (output_bfd
);
3814 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, FALSE
);
3817 relend
= relocs
+ input_section
->reloc_count
;
3818 for (; rel
< relend
; ++rel
)
3820 struct elf_link_hash_entry
*h
;
3821 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3822 bfd_reloc_status_type r
;
3823 reloc_howto_type
*howto
;
3824 unsigned long r_symndx
;
3825 Elf_Internal_Sym
*sym
;
3826 unsigned int r_type
;
3830 bfd_boolean dynamic_symbol_p
;
3831 bfd_boolean undef_weak_ref
;
3833 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3834 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3836 (*_bfd_error_handler
)
3837 (_("%B: unknown relocation type %d"),
3838 input_bfd
, (int) r_type
);
3839 bfd_set_error (bfd_error_bad_value
);
3844 howto
= ia64_elf_lookup_howto (r_type
);
3845 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3849 undef_weak_ref
= FALSE
;
3851 if (r_symndx
< symtab_hdr
->sh_info
)
3853 /* Reloc against local symbol. */
3855 sym
= local_syms
+ r_symndx
;
3856 sym_sec
= local_sections
[r_symndx
];
3858 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3859 if (!bfd_link_relocatable (info
)
3860 && (sym_sec
->flags
& SEC_MERGE
) != 0
3861 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3862 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3864 struct elfNN_ia64_local_hash_entry
*loc_h
;
3866 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, FALSE
);
3867 if (loc_h
&& ! loc_h
->sec_merge_done
)
3869 struct elfNN_ia64_dyn_sym_info
*dynent
;
3872 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3878 _bfd_merged_section_offset (output_bfd
, &msec
,
3879 elf_section_data (msec
)->
3883 dynent
->addend
-= sym
->st_value
;
3884 dynent
->addend
+= msec
->output_section
->vma
3885 + msec
->output_offset
3886 - sym_sec
->output_section
->vma
3887 - sym_sec
->output_offset
;
3890 /* We may have introduced duplicated entries. We need
3891 to remove them properly. */
3892 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3893 if (count
!= loc_h
->count
)
3895 loc_h
->count
= count
;
3896 loc_h
->sorted_count
= count
;
3899 loc_h
->sec_merge_done
= 1;
3905 bfd_boolean unresolved_reloc
;
3906 bfd_boolean warned
, ignored
;
3907 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3909 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3910 r_symndx
, symtab_hdr
, sym_hashes
,
3912 unresolved_reloc
, warned
, ignored
);
3914 if (h
->root
.type
== bfd_link_hash_undefweak
)
3915 undef_weak_ref
= TRUE
;
3916 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3920 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3921 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3922 rel
, 1, relend
, howto
, 0, contents
);
3924 if (bfd_link_relocatable (info
))
3927 hit_addr
= contents
+ rel
->r_offset
;
3928 value
+= rel
->r_addend
;
3929 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3940 case R_IA64_DIR32MSB
:
3941 case R_IA64_DIR32LSB
:
3942 case R_IA64_DIR64MSB
:
3943 case R_IA64_DIR64LSB
:
3944 /* Install a dynamic relocation for this reloc. */
3945 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3946 && r_symndx
!= STN_UNDEF
3947 && (input_section
->flags
& SEC_ALLOC
) != 0)
3949 unsigned int dyn_r_type
;
3953 BFD_ASSERT (srel
!= NULL
);
3960 /* ??? People shouldn't be doing non-pic code in
3961 shared libraries nor dynamic executables. */
3962 (*_bfd_error_handler
)
3963 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3965 h
? h
->root
.root
.string
3966 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
3975 /* If we don't need dynamic symbol lookup, find a
3976 matching RELATIVE relocation. */
3977 dyn_r_type
= r_type
;
3978 if (dynamic_symbol_p
)
3980 dynindx
= h
->dynindx
;
3981 addend
= rel
->r_addend
;
3988 case R_IA64_DIR32MSB
:
3989 dyn_r_type
= R_IA64_REL32MSB
;
3991 case R_IA64_DIR32LSB
:
3992 dyn_r_type
= R_IA64_REL32LSB
;
3994 case R_IA64_DIR64MSB
:
3995 dyn_r_type
= R_IA64_REL64MSB
;
3997 case R_IA64_DIR64LSB
:
3998 dyn_r_type
= R_IA64_REL64LSB
;
4008 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4009 srel
, rel
->r_offset
, dyn_r_type
,
4014 case R_IA64_LTV32MSB
:
4015 case R_IA64_LTV32LSB
:
4016 case R_IA64_LTV64MSB
:
4017 case R_IA64_LTV64LSB
:
4018 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4021 case R_IA64_GPREL22
:
4022 case R_IA64_GPREL64I
:
4023 case R_IA64_GPREL32MSB
:
4024 case R_IA64_GPREL32LSB
:
4025 case R_IA64_GPREL64MSB
:
4026 case R_IA64_GPREL64LSB
:
4027 if (dynamic_symbol_p
)
4029 (*_bfd_error_handler
)
4030 (_("%B: @gprel relocation against dynamic symbol %s"),
4032 h
? h
->root
.root
.string
4033 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4039 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4042 case R_IA64_LTOFF22
:
4043 case R_IA64_LTOFF22X
:
4044 case R_IA64_LTOFF64I
:
4045 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4046 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4047 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4049 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4052 case R_IA64_PLTOFF22
:
4053 case R_IA64_PLTOFF64I
:
4054 case R_IA64_PLTOFF64MSB
:
4055 case R_IA64_PLTOFF64LSB
:
4056 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4057 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, FALSE
);
4059 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4062 case R_IA64_FPTR64I
:
4063 case R_IA64_FPTR32MSB
:
4064 case R_IA64_FPTR32LSB
:
4065 case R_IA64_FPTR64MSB
:
4066 case R_IA64_FPTR64LSB
:
4067 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4068 if (dyn_i
->want_fptr
)
4070 if (!undef_weak_ref
)
4071 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4073 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4076 unsigned int dyn_r_type
= r_type
;
4077 bfd_vma addend
= rel
->r_addend
;
4079 /* Otherwise, we expect the dynamic linker to create
4082 if (dyn_i
->want_fptr
)
4084 if (r_type
== R_IA64_FPTR64I
)
4086 /* We can't represent this without a dynamic symbol.
4087 Adjust the relocation to be against an output
4088 section symbol, which are always present in the
4089 dynamic symbol table. */
4090 /* ??? People shouldn't be doing non-pic code in
4091 shared libraries. Hork. */
4092 (*_bfd_error_handler
)
4093 (_("%B: linking non-pic code in a position independent executable"),
4100 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4104 if (h
->dynindx
!= -1)
4105 dynindx
= h
->dynindx
;
4107 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4108 (info
, h
->root
.u
.def
.section
->owner
,
4109 global_sym_index (h
)));
4114 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4115 (info
, input_bfd
, (long) r_symndx
));
4119 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4120 srel
, rel
->r_offset
, dyn_r_type
,
4124 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4127 case R_IA64_LTOFF_FPTR22
:
4128 case R_IA64_LTOFF_FPTR64I
:
4129 case R_IA64_LTOFF_FPTR32MSB
:
4130 case R_IA64_LTOFF_FPTR32LSB
:
4131 case R_IA64_LTOFF_FPTR64MSB
:
4132 case R_IA64_LTOFF_FPTR64LSB
:
4136 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4137 if (dyn_i
->want_fptr
)
4139 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4140 if (!undef_weak_ref
)
4141 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4146 /* Otherwise, we expect the dynamic linker to create
4150 if (h
->dynindx
!= -1)
4151 dynindx
= h
->dynindx
;
4153 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4154 (info
, h
->root
.u
.def
.section
->owner
,
4155 global_sym_index (h
)));
4158 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4159 (info
, input_bfd
, (long) r_symndx
));
4163 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4164 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4166 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4170 case R_IA64_PCREL32MSB
:
4171 case R_IA64_PCREL32LSB
:
4172 case R_IA64_PCREL64MSB
:
4173 case R_IA64_PCREL64LSB
:
4174 /* Install a dynamic relocation for this reloc. */
4175 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4177 BFD_ASSERT (srel
!= NULL
);
4179 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4180 srel
, rel
->r_offset
, r_type
,
4181 h
->dynindx
, rel
->r_addend
);
4185 case R_IA64_PCREL21B
:
4186 case R_IA64_PCREL60B
:
4187 /* We should have created a PLT entry for any dynamic symbol. */
4190 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4192 if (dyn_i
&& dyn_i
->want_plt2
)
4194 /* Should have caught this earlier. */
4195 BFD_ASSERT (rel
->r_addend
== 0);
4197 value
= (ia64_info
->root
.splt
->output_section
->vma
4198 + ia64_info
->root
.splt
->output_offset
4199 + dyn_i
->plt2_offset
);
4203 /* Since there's no PLT entry, Validate that this is
4205 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4207 /* If the symbol is undef_weak, we shouldn't be trying
4208 to call it. There's every chance that we'd wind up
4209 with an out-of-range fixup here. Don't bother setting
4210 any value at all. */
4216 case R_IA64_PCREL21BI
:
4217 case R_IA64_PCREL21F
:
4218 case R_IA64_PCREL21M
:
4219 case R_IA64_PCREL22
:
4220 case R_IA64_PCREL64I
:
4221 /* The PCREL21BI reloc is specifically not intended for use with
4222 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4223 fixup code, and thus probably ought not be dynamic. The
4224 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4225 if (dynamic_symbol_p
)
4229 if (r_type
== R_IA64_PCREL21BI
)
4230 msg
= _("%B: @internal branch to dynamic symbol %s");
4231 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4232 msg
= _("%B: speculation fixup to dynamic symbol %s");
4234 msg
= _("%B: @pcrel relocation against dynamic symbol %s");
4235 (*_bfd_error_handler
) (msg
, input_bfd
,
4236 h
? h
->root
.root
.string
4237 : bfd_elf_sym_name (input_bfd
,
4247 /* Make pc-relative. */
4248 value
-= (input_section
->output_section
->vma
4249 + input_section
->output_offset
4250 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4251 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4254 case R_IA64_SEGREL32MSB
:
4255 case R_IA64_SEGREL32LSB
:
4256 case R_IA64_SEGREL64MSB
:
4257 case R_IA64_SEGREL64LSB
:
4259 /* Find the segment that contains the output_section. */
4260 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4261 (output_bfd
, input_section
->output_section
);
4265 r
= bfd_reloc_notsupported
;
4269 /* The VMA of the segment is the vaddr of the associated
4271 if (value
> p
->p_vaddr
)
4272 value
-= p
->p_vaddr
;
4275 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4280 case R_IA64_SECREL32MSB
:
4281 case R_IA64_SECREL32LSB
:
4282 case R_IA64_SECREL64MSB
:
4283 case R_IA64_SECREL64LSB
:
4284 /* Make output-section relative to section where the symbol
4285 is defined. PR 475 */
4287 value
-= sym_sec
->output_section
->vma
;
4288 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4291 case R_IA64_IPLTMSB
:
4292 case R_IA64_IPLTLSB
:
4293 /* Install a dynamic relocation for this reloc. */
4294 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4295 && (input_section
->flags
& SEC_ALLOC
) != 0)
4297 BFD_ASSERT (srel
!= NULL
);
4299 /* If we don't need dynamic symbol lookup, install two
4300 RELATIVE relocations. */
4301 if (!dynamic_symbol_p
)
4303 unsigned int dyn_r_type
;
4305 if (r_type
== R_IA64_IPLTMSB
)
4306 dyn_r_type
= R_IA64_REL64MSB
;
4308 dyn_r_type
= R_IA64_REL64LSB
;
4310 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4312 srel
, rel
->r_offset
,
4313 dyn_r_type
, 0, value
);
4314 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4316 srel
, rel
->r_offset
+ 8,
4317 dyn_r_type
, 0, gp_val
);
4320 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4321 srel
, rel
->r_offset
, r_type
,
4322 h
->dynindx
, rel
->r_addend
);
4325 if (r_type
== R_IA64_IPLTMSB
)
4326 r_type
= R_IA64_DIR64MSB
;
4328 r_type
= R_IA64_DIR64LSB
;
4329 ia64_elf_install_value (hit_addr
, value
, r_type
);
4330 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4333 case R_IA64_TPREL14
:
4334 case R_IA64_TPREL22
:
4335 case R_IA64_TPREL64I
:
4336 if (elf_hash_table (info
)->tls_sec
== NULL
)
4337 goto missing_tls_sec
;
4338 value
-= elfNN_ia64_tprel_base (info
);
4339 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4342 case R_IA64_DTPREL14
:
4343 case R_IA64_DTPREL22
:
4344 case R_IA64_DTPREL64I
:
4345 case R_IA64_DTPREL32LSB
:
4346 case R_IA64_DTPREL32MSB
:
4347 case R_IA64_DTPREL64LSB
:
4348 case R_IA64_DTPREL64MSB
:
4349 if (elf_hash_table (info
)->tls_sec
== NULL
)
4350 goto missing_tls_sec
;
4351 value
-= elfNN_ia64_dtprel_base (info
);
4352 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4355 case R_IA64_LTOFF_TPREL22
:
4356 case R_IA64_LTOFF_DTPMOD22
:
4357 case R_IA64_LTOFF_DTPREL22
:
4360 long dynindx
= h
? h
->dynindx
: -1;
4361 bfd_vma r_addend
= rel
->r_addend
;
4366 case R_IA64_LTOFF_TPREL22
:
4367 if (!dynamic_symbol_p
)
4369 if (elf_hash_table (info
)->tls_sec
== NULL
)
4370 goto missing_tls_sec
;
4371 if (!bfd_link_pic (info
))
4372 value
-= elfNN_ia64_tprel_base (info
);
4375 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4379 got_r_type
= R_IA64_TPREL64LSB
;
4381 case R_IA64_LTOFF_DTPMOD22
:
4382 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4384 got_r_type
= R_IA64_DTPMOD64LSB
;
4386 case R_IA64_LTOFF_DTPREL22
:
4387 if (!dynamic_symbol_p
)
4389 if (elf_hash_table (info
)->tls_sec
== NULL
)
4390 goto missing_tls_sec
;
4391 value
-= elfNN_ia64_dtprel_base (info
);
4393 got_r_type
= R_IA64_DTPRELNNLSB
;
4396 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4397 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4400 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4405 r
= bfd_reloc_notsupported
;
4414 case bfd_reloc_undefined
:
4415 /* This can happen for global table relative relocs if
4416 __gp is undefined. This is a panic situation so we
4417 don't try to continue. */
4418 (*info
->callbacks
->undefined_symbol
)
4419 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4422 case bfd_reloc_notsupported
:
4427 name
= h
->root
.root
.string
;
4429 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4431 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4433 input_section
, rel
->r_offset
);
4438 case bfd_reloc_dangerous
:
4439 case bfd_reloc_outofrange
:
4440 case bfd_reloc_overflow
:
4447 name
= h
->root
.root
.string
;
4449 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4454 case R_IA64_TPREL14
:
4455 case R_IA64_TPREL22
:
4456 case R_IA64_TPREL64I
:
4457 case R_IA64_DTPREL14
:
4458 case R_IA64_DTPREL22
:
4459 case R_IA64_DTPREL64I
:
4460 case R_IA64_DTPREL32LSB
:
4461 case R_IA64_DTPREL32MSB
:
4462 case R_IA64_DTPREL64LSB
:
4463 case R_IA64_DTPREL64MSB
:
4464 case R_IA64_LTOFF_TPREL22
:
4465 case R_IA64_LTOFF_DTPMOD22
:
4466 case R_IA64_LTOFF_DTPREL22
:
4467 (*_bfd_error_handler
)
4468 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4469 input_bfd
, input_section
, howto
->name
, name
,
4473 case R_IA64_PCREL21B
:
4474 case R_IA64_PCREL21BI
:
4475 case R_IA64_PCREL21M
:
4476 case R_IA64_PCREL21F
:
4477 if (is_elf_hash_table (info
->hash
))
4479 /* Relaxtion is always performed for ELF output.
4480 Overflow failures for those relocations mean
4481 that the section is too big to relax. */
4482 (*_bfd_error_handler
)
4483 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4484 input_bfd
, input_section
, howto
->name
, name
,
4485 rel
->r_offset
, input_section
->size
);
4489 (*info
->callbacks
->reloc_overflow
) (info
,
4510 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4511 struct bfd_link_info
*info
,
4512 struct elf_link_hash_entry
*h
,
4513 Elf_Internal_Sym
*sym
)
4515 struct elfNN_ia64_link_hash_table
*ia64_info
;
4516 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4518 ia64_info
= elfNN_ia64_hash_table (info
);
4519 if (ia64_info
== NULL
)
4522 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4524 /* Fill in the PLT data, if required. */
4525 if (dyn_i
&& dyn_i
->want_plt
)
4527 Elf_Internal_Rela outrel
;
4530 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4532 gp_val
= _bfd_get_gp_value (output_bfd
);
4534 /* Initialize the minimal PLT entry. */
4536 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4537 plt_sec
= ia64_info
->root
.splt
;
4538 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4540 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4541 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4542 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4544 plt_addr
= (plt_sec
->output_section
->vma
4545 + plt_sec
->output_offset
4546 + dyn_i
->plt_offset
);
4547 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, TRUE
);
4549 /* Initialize the FULL PLT entry, if needed. */
4550 if (dyn_i
->want_plt2
)
4552 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4554 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4555 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4557 /* Mark the symbol as undefined, rather than as defined in the
4558 plt section. Leave the value alone. */
4559 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4560 first place. But perhaps elflink.c did some for us. */
4561 if (!h
->def_regular
)
4562 sym
->st_shndx
= SHN_UNDEF
;
4565 /* Create the dynamic relocation. */
4566 outrel
.r_offset
= pltoff_addr
;
4567 if (bfd_little_endian (output_bfd
))
4568 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4570 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4571 outrel
.r_addend
= 0;
4573 /* This is fun. In the .IA_64.pltoff section, we've got entries
4574 that correspond both to real PLT entries, and those that
4575 happened to resolve to local symbols but need to be created
4576 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4577 relocations for the real PLT should come at the end of the
4578 section, so that they can be indexed by plt entry at runtime.
4580 We emitted all of the relocations for the non-PLT @pltoff
4581 entries during relocate_section. So we can consider the
4582 existing sec->reloc_count to be the base of the array of
4585 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4586 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4587 * sizeof (ElfNN_External_Rela
));
4588 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4591 /* Mark some specially defined symbols as absolute. */
4592 if (h
== ia64_info
->root
.hdynamic
4593 || h
== ia64_info
->root
.hgot
4594 || h
== ia64_info
->root
.hplt
)
4595 sym
->st_shndx
= SHN_ABS
;
4601 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4602 struct bfd_link_info
*info
)
4604 struct elfNN_ia64_link_hash_table
*ia64_info
;
4607 ia64_info
= elfNN_ia64_hash_table (info
);
4608 if (ia64_info
== NULL
)
4611 dynobj
= ia64_info
->root
.dynobj
;
4613 if (elf_hash_table (info
)->dynamic_sections_created
)
4615 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4616 asection
*sdyn
, *sgotplt
;
4619 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4620 sgotplt
= bfd_get_linker_section (dynobj
, ".got.plt");
4621 BFD_ASSERT (sdyn
!= NULL
);
4622 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4623 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4625 gp_val
= _bfd_get_gp_value (abfd
);
4627 for (; dyncon
< dynconend
; dyncon
++)
4629 Elf_Internal_Dyn dyn
;
4631 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4636 dyn
.d_un
.d_ptr
= gp_val
;
4640 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4641 * sizeof (ElfNN_External_Rela
));
4645 /* See the comment above in finish_dynamic_symbol. */
4646 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4647 + ia64_info
->rel_pltoff_sec
->output_offset
4648 + (ia64_info
->rel_pltoff_sec
->reloc_count
4649 * sizeof (ElfNN_External_Rela
)));
4652 case DT_IA_64_PLT_RESERVE
:
4653 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4654 + sgotplt
->output_offset
);
4658 /* Do not have RELASZ include JMPREL. This makes things
4659 easier on ld.so. This is not what the rest of BFD set up. */
4660 dyn
.d_un
.d_val
-= (ia64_info
->minplt_entries
4661 * sizeof (ElfNN_External_Rela
));
4665 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4668 /* Initialize the PLT0 entry. */
4669 if (ia64_info
->root
.splt
)
4671 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4674 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4676 pltres
= (sgotplt
->output_section
->vma
4677 + sgotplt
->output_offset
4680 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4687 /* ELF file flag handling: */
4689 /* Function to keep IA-64 specific file flags. */
4691 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4693 BFD_ASSERT (!elf_flags_init (abfd
)
4694 || elf_elfheader (abfd
)->e_flags
== flags
);
4696 elf_elfheader (abfd
)->e_flags
= flags
;
4697 elf_flags_init (abfd
) = TRUE
;
4701 /* Merge backend specific data from an object file to the output
4702 object file when linking. */
4704 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4708 bfd_boolean ok
= TRUE
;
4710 /* Don't even pretend to support mixed-format linking. */
4711 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4712 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4715 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4716 out_flags
= elf_elfheader (obfd
)->e_flags
;
4718 if (! elf_flags_init (obfd
))
4720 elf_flags_init (obfd
) = TRUE
;
4721 elf_elfheader (obfd
)->e_flags
= in_flags
;
4723 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4724 && bfd_get_arch_info (obfd
)->the_default
)
4726 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4727 bfd_get_mach (ibfd
));
4733 /* Check flag compatibility. */
4734 if (in_flags
== out_flags
)
4737 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4738 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4739 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4741 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4743 (*_bfd_error_handler
)
4744 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4747 bfd_set_error (bfd_error_bad_value
);
4750 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4752 (*_bfd_error_handler
)
4753 (_("%B: linking big-endian files with little-endian files"),
4756 bfd_set_error (bfd_error_bad_value
);
4759 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4761 (*_bfd_error_handler
)
4762 (_("%B: linking 64-bit files with 32-bit files"),
4765 bfd_set_error (bfd_error_bad_value
);
4768 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4770 (*_bfd_error_handler
)
4771 (_("%B: linking constant-gp files with non-constant-gp files"),
4774 bfd_set_error (bfd_error_bad_value
);
4777 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4778 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4780 (*_bfd_error_handler
)
4781 (_("%B: linking auto-pic files with non-auto-pic files"),
4784 bfd_set_error (bfd_error_bad_value
);
4792 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4794 FILE *file
= (FILE *) ptr
;
4795 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4797 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4799 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4800 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4801 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4802 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4803 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4804 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4805 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4806 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4807 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4809 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4813 static enum elf_reloc_type_class
4814 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4815 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4816 const Elf_Internal_Rela
*rela
)
4818 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4820 case R_IA64_REL32MSB
:
4821 case R_IA64_REL32LSB
:
4822 case R_IA64_REL64MSB
:
4823 case R_IA64_REL64LSB
:
4824 return reloc_class_relative
;
4825 case R_IA64_IPLTMSB
:
4826 case R_IA64_IPLTLSB
:
4827 return reloc_class_plt
;
4829 return reloc_class_copy
;
4831 return reloc_class_normal
;
4835 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4837 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4838 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4839 { NULL
, 0, 0, 0, 0 }
4843 elfNN_ia64_object_p (bfd
*abfd
)
4846 asection
*group
, *unwi
, *unw
;
4849 char *unwi_name
, *unw_name
;
4852 if (abfd
->flags
& DYNAMIC
)
4855 /* Flags for fake group section. */
4856 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4859 /* We add a fake section group for each .gnu.linkonce.t.* section,
4860 which isn't in a section group, and its unwind sections. */
4861 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4863 if (elf_sec_group (sec
) == NULL
4864 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4865 == (SEC_LINK_ONCE
| SEC_CODE
))
4866 && CONST_STRNEQ (sec
->name
, ".gnu.linkonce.t."))
4868 name
= sec
->name
+ 16;
4870 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4871 unwi_name
= bfd_alloc (abfd
, amt
);
4875 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4876 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4878 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4879 unw_name
= bfd_alloc (abfd
, amt
);
4883 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4884 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4886 /* We need to create a fake group section for it and its
4888 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4893 /* Move the fake group section to the beginning. */
4894 bfd_section_list_remove (abfd
, group
);
4895 bfd_section_list_prepend (abfd
, group
);
4897 elf_next_in_group (group
) = sec
;
4899 elf_group_name (sec
) = name
;
4900 elf_next_in_group (sec
) = sec
;
4901 elf_sec_group (sec
) = group
;
4905 elf_group_name (unwi
) = name
;
4906 elf_next_in_group (unwi
) = sec
;
4907 elf_next_in_group (sec
) = unwi
;
4908 elf_sec_group (unwi
) = group
;
4913 elf_group_name (unw
) = name
;
4916 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4917 elf_next_in_group (unwi
) = unw
;
4921 elf_next_in_group (unw
) = sec
;
4922 elf_next_in_group (sec
) = unw
;
4924 elf_sec_group (unw
) = group
;
4927 /* Fake SHT_GROUP section header. */
4928 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4929 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4936 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4938 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4939 return (vec
== &ia64_elfNN_hpux_be_vec
);
4943 elfNN_hpux_post_process_headers (bfd
*abfd
,
4944 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
4946 Elf_Internal_Ehdr
*i_ehdrp
= elf_elfheader (abfd
);
4948 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4949 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4953 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4954 asection
*sec
, int *retval
)
4956 if (bfd_is_com_section (sec
))
4958 *retval
= SHN_IA_64_ANSI_COMMON
;
4965 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
4968 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
4970 switch (elfsym
->internal_elf_sym
.st_shndx
)
4972 case SHN_IA_64_ANSI_COMMON
:
4973 asym
->section
= bfd_com_section_ptr
;
4974 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
4975 asym
->flags
&= ~BSF_GLOBAL
;
4980 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4981 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4982 #define TARGET_BIG_SYM ia64_elfNN_be_vec
4983 #define TARGET_BIG_NAME "elfNN-ia64-big"
4984 #define ELF_ARCH bfd_arch_ia64
4985 #define ELF_TARGET_ID IA64_ELF_DATA
4986 #define ELF_MACHINE_CODE EM_IA_64
4987 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4988 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4989 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4990 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4992 #define elf_backend_section_from_shdr \
4993 elfNN_ia64_section_from_shdr
4994 #define elf_backend_section_flags \
4995 elfNN_ia64_section_flags
4996 #define elf_backend_fake_sections \
4997 elfNN_ia64_fake_sections
4998 #define elf_backend_final_write_processing \
4999 elfNN_ia64_final_write_processing
5000 #define elf_backend_add_symbol_hook \
5001 elfNN_ia64_add_symbol_hook
5002 #define elf_backend_additional_program_headers \
5003 elfNN_ia64_additional_program_headers
5004 #define elf_backend_modify_segment_map \
5005 elfNN_ia64_modify_segment_map
5006 #define elf_backend_modify_program_headers \
5007 elfNN_ia64_modify_program_headers
5008 #define elf_info_to_howto \
5009 elfNN_ia64_info_to_howto
5011 #define bfd_elfNN_bfd_reloc_type_lookup \
5012 ia64_elf_reloc_type_lookup
5013 #define bfd_elfNN_bfd_reloc_name_lookup \
5014 ia64_elf_reloc_name_lookup
5015 #define bfd_elfNN_bfd_is_local_label_name \
5016 elfNN_ia64_is_local_label_name
5017 #define bfd_elfNN_bfd_relax_section \
5018 elfNN_ia64_relax_section
5020 #define elf_backend_object_p \
5023 /* Stuff for the BFD linker: */
5024 #define bfd_elfNN_bfd_link_hash_table_create \
5025 elfNN_ia64_hash_table_create
5026 #define elf_backend_create_dynamic_sections \
5027 elfNN_ia64_create_dynamic_sections
5028 #define elf_backend_check_relocs \
5029 elfNN_ia64_check_relocs
5030 #define elf_backend_adjust_dynamic_symbol \
5031 elfNN_ia64_adjust_dynamic_symbol
5032 #define elf_backend_size_dynamic_sections \
5033 elfNN_ia64_size_dynamic_sections
5034 #define elf_backend_omit_section_dynsym \
5035 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5036 #define elf_backend_relocate_section \
5037 elfNN_ia64_relocate_section
5038 #define elf_backend_finish_dynamic_symbol \
5039 elfNN_ia64_finish_dynamic_symbol
5040 #define elf_backend_finish_dynamic_sections \
5041 elfNN_ia64_finish_dynamic_sections
5042 #define bfd_elfNN_bfd_final_link \
5043 elfNN_ia64_final_link
5045 #define bfd_elfNN_bfd_merge_private_bfd_data \
5046 elfNN_ia64_merge_private_bfd_data
5047 #define bfd_elfNN_bfd_set_private_flags \
5048 elfNN_ia64_set_private_flags
5049 #define bfd_elfNN_bfd_print_private_bfd_data \
5050 elfNN_ia64_print_private_bfd_data
5052 #define elf_backend_plt_readonly 1
5053 #define elf_backend_want_plt_sym 0
5054 #define elf_backend_plt_alignment 5
5055 #define elf_backend_got_header_size 0
5056 #define elf_backend_want_got_plt 1
5057 #define elf_backend_may_use_rel_p 1
5058 #define elf_backend_may_use_rela_p 1
5059 #define elf_backend_default_use_rela_p 1
5060 #define elf_backend_want_dynbss 0
5061 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5062 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5063 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5064 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5065 #define elf_backend_rela_normal 1
5066 #define elf_backend_special_sections elfNN_ia64_special_sections
5067 #define elf_backend_default_execstack 0
5069 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5070 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5071 We don't want to flood users with so many error messages. We turn
5072 off the warning for now. It will be turned on later when the Intel
5073 compiler is fixed. */
5074 #define elf_backend_link_order_error_handler NULL
5076 #include "elfNN-target.h"
5078 /* HPUX-specific vectors. */
5080 #undef TARGET_LITTLE_SYM
5081 #undef TARGET_LITTLE_NAME
5082 #undef TARGET_BIG_SYM
5083 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5084 #undef TARGET_BIG_NAME
5085 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5087 /* These are HP-UX specific functions. */
5089 #undef elf_backend_post_process_headers
5090 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5092 #undef elf_backend_section_from_bfd_section
5093 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5095 #undef elf_backend_symbol_processing
5096 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5098 #undef elf_backend_want_p_paddr_set_to_zero
5099 #define elf_backend_want_p_paddr_set_to_zero 1
5101 #undef ELF_COMMONPAGESIZE
5103 #define ELF_OSABI ELFOSABI_HPUX
5106 #define elfNN_bed elfNN_ia64_hpux_bed
5108 #include "elfNN-target.h"