1 /* IA-64 support for 64-bit ELF
2 Copyright (C) 1998-2020 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "opcode/ia64.h"
30 #include "elfxx-ia64.h"
35 #define LOG_SECTION_ALIGN 3
39 #define LOG_SECTION_ALIGN 2
42 #define is_ia64_elf(bfd) \
43 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
44 && elf_object_id (bfd) == IA64_ELF_DATA)
46 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
47 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);
49 /* In dynamically (linker-) created sections, we generally need to keep track
50 of the place a symbol or expression got allocated to. This is done via hash
51 tables that store entries of the following type. */
53 struct elfNN_ia64_dyn_sym_info
55 /* The addend for which this entry is relevant. */
60 bfd_vma pltoff_offset
;
64 bfd_vma dtpmod_offset
;
65 bfd_vma dtprel_offset
;
67 /* The symbol table entry, if any, that this was derived from. */
68 struct elf_link_hash_entry
*h
;
70 /* Used to count non-got, non-plt relocations for delayed sizing
71 of relocation sections. */
72 struct elfNN_ia64_dyn_reloc_entry
74 struct elfNN_ia64_dyn_reloc_entry
*next
;
79 /* Is this reloc against readonly section? */
83 /* TRUE when the section contents have been updated. */
84 unsigned got_done
: 1;
85 unsigned fptr_done
: 1;
86 unsigned pltoff_done
: 1;
87 unsigned tprel_done
: 1;
88 unsigned dtpmod_done
: 1;
89 unsigned dtprel_done
: 1;
91 /* TRUE for the different kinds of linker data we want created. */
92 unsigned want_got
: 1;
93 unsigned want_gotx
: 1;
94 unsigned want_fptr
: 1;
95 unsigned want_ltoff_fptr
: 1;
96 unsigned want_plt
: 1;
97 unsigned want_plt2
: 1;
98 unsigned want_pltoff
: 1;
99 unsigned want_tprel
: 1;
100 unsigned want_dtpmod
: 1;
101 unsigned want_dtprel
: 1;
104 struct elfNN_ia64_local_hash_entry
108 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
110 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
111 unsigned int sorted_count
;
112 /* The size of elfNN_ia64_dyn_sym_info array. */
114 /* The array of elfNN_ia64_dyn_sym_info. */
115 struct elfNN_ia64_dyn_sym_info
*info
;
117 /* TRUE if this hash entry's addends was translated for
118 SHF_MERGE optimization. */
119 unsigned sec_merge_done
: 1;
122 struct elfNN_ia64_link_hash_entry
124 struct elf_link_hash_entry root
;
125 /* The number of elements in elfNN_ia64_dyn_sym_info array. */
127 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
128 unsigned int sorted_count
;
129 /* The size of elfNN_ia64_dyn_sym_info array. */
131 /* The array of elfNN_ia64_dyn_sym_info. */
132 struct elfNN_ia64_dyn_sym_info
*info
;
135 struct elfNN_ia64_link_hash_table
137 /* The main hash table. */
138 struct elf_link_hash_table root
;
140 asection
*fptr_sec
; /* Function descriptor table (or NULL). */
141 asection
*rel_fptr_sec
; /* Dynamic relocation section for same. */
142 asection
*pltoff_sec
; /* Private descriptors for plt (or NULL). */
143 asection
*rel_pltoff_sec
; /* Dynamic relocation section for same. */
145 bfd_size_type minplt_entries
; /* Number of minplt entries. */
146 unsigned reltext
: 1; /* Are there relocs against readonly sections? */
147 unsigned self_dtpmod_done
: 1;/* Has self DTPMOD entry been finished? */
148 bfd_vma self_dtpmod_offset
; /* .got offset to self DTPMOD entry. */
149 /* There are maybe R_IA64_GPREL22 relocations, including those
150 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
151 sections. We need to record those sections so that we can choose
152 a proper GP to cover all R_IA64_GPREL22 relocations. */
153 asection
*max_short_sec
; /* Maximum short output section. */
154 bfd_vma max_short_offset
; /* Maximum short offset. */
155 asection
*min_short_sec
; /* Minimum short output section. */
156 bfd_vma min_short_offset
; /* Minimum short offset. */
158 htab_t loc_hash_table
;
159 void *loc_hash_memory
;
162 struct elfNN_ia64_allocate_data
164 struct bfd_link_info
*info
;
166 bfd_boolean only_got
;
169 #define elfNN_ia64_hash_table(p) \
170 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
171 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
173 static struct elfNN_ia64_dyn_sym_info
* get_dyn_sym_info
174 (struct elfNN_ia64_link_hash_table
*ia64_info
,
175 struct elf_link_hash_entry
*h
,
176 bfd
*abfd
, const Elf_Internal_Rela
*rel
, bfd_boolean create
);
177 static bfd_boolean elfNN_ia64_dynamic_symbol_p
178 (struct elf_link_hash_entry
*h
, struct bfd_link_info
*info
, int);
179 static bfd_boolean elfNN_ia64_choose_gp
180 (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
);
181 static void elfNN_ia64_dyn_sym_traverse
182 (struct elfNN_ia64_link_hash_table
*ia64_info
,
183 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
185 static bfd_boolean allocate_global_data_got
186 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
187 static bfd_boolean allocate_global_fptr_got
188 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
189 static bfd_boolean allocate_local_got
190 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
191 static bfd_boolean elfNN_ia64_hpux_vec
192 (const bfd_target
*vec
);
193 static bfd_boolean allocate_dynrel_entries
194 (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
);
195 static asection
*get_pltoff
196 (bfd
*abfd
, struct bfd_link_info
*info
,
197 struct elfNN_ia64_link_hash_table
*ia64_info
);
199 /* ia64-specific relocation. */
201 /* Given a ELF reloc, return the matching HOWTO structure. */
204 elfNN_ia64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
206 Elf_Internal_Rela
*elf_reloc
)
208 unsigned int r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
210 bfd_reloc
->howto
= ia64_elf_lookup_howto (r_type
);
211 if (bfd_reloc
->howto
== NULL
)
213 /* xgettext:c-format */
214 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
216 bfd_set_error (bfd_error_bad_value
);
223 #define PLT_HEADER_SIZE (3 * 16)
224 #define PLT_MIN_ENTRY_SIZE (1 * 16)
225 #define PLT_FULL_ENTRY_SIZE (2 * 16)
226 #define PLT_RESERVED_WORDS 3
228 static const bfd_byte plt_header
[PLT_HEADER_SIZE
] =
230 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
231 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
232 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
233 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
234 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
235 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
236 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
237 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
238 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
241 static const bfd_byte plt_min_entry
[PLT_MIN_ENTRY_SIZE
] =
243 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
244 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
245 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
248 static const bfd_byte plt_full_entry
[PLT_FULL_ENTRY_SIZE
] =
250 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
251 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
252 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
253 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
254 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
255 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
258 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
260 static const bfd_byte oor_brl
[16] =
262 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
263 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
264 0x00, 0x00, 0x00, 0xc0
267 static const bfd_byte oor_ip
[48] =
269 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
270 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
271 0x01, 0x00, 0x00, 0x60,
272 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
273 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
274 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
275 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
276 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
277 0x60, 0x00, 0x80, 0x00 /* br b6;; */
280 static size_t oor_branch_size
= sizeof (oor_brl
);
283 bfd_elfNN_ia64_after_parse (int itanium
)
285 oor_branch_size
= itanium
? sizeof (oor_ip
) : sizeof (oor_brl
);
289 /* Rename some of the generic section flags to better document how they
291 #define skip_relax_pass_0 sec_flg0
292 #define skip_relax_pass_1 sec_flg1
294 /* These functions do relaxation for IA-64 ELF. */
297 elfNN_ia64_update_short_info (asection
*sec
, bfd_vma offset
,
298 struct elfNN_ia64_link_hash_table
*ia64_info
)
300 /* Skip ABS and SHF_IA_64_SHORT sections. */
301 if (sec
== bfd_abs_section_ptr
302 || (sec
->flags
& SEC_SMALL_DATA
) != 0)
305 if (!ia64_info
->min_short_sec
)
307 ia64_info
->max_short_sec
= sec
;
308 ia64_info
->max_short_offset
= offset
;
309 ia64_info
->min_short_sec
= sec
;
310 ia64_info
->min_short_offset
= offset
;
312 else if (sec
== ia64_info
->max_short_sec
313 && offset
> ia64_info
->max_short_offset
)
314 ia64_info
->max_short_offset
= offset
;
315 else if (sec
== ia64_info
->min_short_sec
316 && offset
< ia64_info
->min_short_offset
)
317 ia64_info
->min_short_offset
= offset
;
318 else if (sec
->output_section
->vma
319 > ia64_info
->max_short_sec
->vma
)
321 ia64_info
->max_short_sec
= sec
;
322 ia64_info
->max_short_offset
= offset
;
324 else if (sec
->output_section
->vma
325 < ia64_info
->min_short_sec
->vma
)
327 ia64_info
->min_short_sec
= sec
;
328 ia64_info
->min_short_offset
= offset
;
333 elfNN_ia64_relax_section (bfd
*abfd
, asection
*sec
,
334 struct bfd_link_info
*link_info
,
339 struct one_fixup
*next
;
345 Elf_Internal_Shdr
*symtab_hdr
;
346 Elf_Internal_Rela
*internal_relocs
;
347 Elf_Internal_Rela
*irel
, *irelend
;
349 Elf_Internal_Sym
*isymbuf
= NULL
;
350 struct elfNN_ia64_link_hash_table
*ia64_info
;
351 struct one_fixup
*fixups
= NULL
;
352 bfd_boolean changed_contents
= FALSE
;
353 bfd_boolean changed_relocs
= FALSE
;
354 bfd_boolean changed_got
= FALSE
;
355 bfd_boolean skip_relax_pass_0
= TRUE
;
356 bfd_boolean skip_relax_pass_1
= TRUE
;
359 /* Assume we're not going to change any sizes, and we'll only need
363 if (bfd_link_relocatable (link_info
))
364 (*link_info
->callbacks
->einfo
)
365 (_("%P%F: --relax and -r may not be used together\n"));
367 /* Don't even try to relax for non-ELF outputs. */
368 if (!is_elf_hash_table (link_info
->hash
))
371 /* Nothing to do if there are no relocations or there is no need for
373 if ((sec
->flags
& SEC_RELOC
) == 0
374 || sec
->reloc_count
== 0
375 || (link_info
->relax_pass
== 0 && sec
->skip_relax_pass_0
)
376 || (link_info
->relax_pass
== 1 && sec
->skip_relax_pass_1
))
379 ia64_info
= elfNN_ia64_hash_table (link_info
);
380 if (ia64_info
== NULL
)
383 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
385 /* Load the relocations for this section. */
386 internal_relocs
= (_bfd_elf_link_read_relocs
387 (abfd
, sec
, NULL
, (Elf_Internal_Rela
*) NULL
,
388 link_info
->keep_memory
));
389 if (internal_relocs
== NULL
)
392 irelend
= internal_relocs
+ sec
->reloc_count
;
394 /* Get the section contents. */
395 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
396 contents
= elf_section_data (sec
)->this_hdr
.contents
;
399 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
403 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
405 unsigned long r_type
= ELFNN_R_TYPE (irel
->r_info
);
406 bfd_vma symaddr
, reladdr
, trampoff
, toff
, roff
;
410 bfd_boolean is_branch
;
411 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
416 case R_IA64_PCREL21B
:
417 case R_IA64_PCREL21BI
:
418 case R_IA64_PCREL21M
:
419 case R_IA64_PCREL21F
:
420 /* In pass 1, all br relaxations are done. We can skip it. */
421 if (link_info
->relax_pass
== 1)
423 skip_relax_pass_0
= FALSE
;
427 case R_IA64_PCREL60B
:
428 /* We can't optimize brl to br in pass 0 since br relaxations
429 will increase the code size. Defer it to pass 1. */
430 if (link_info
->relax_pass
== 0)
432 skip_relax_pass_1
= FALSE
;
439 /* Update max_short_sec/min_short_sec. */
441 case R_IA64_LTOFF22X
:
443 /* We can't relax ldx/mov in pass 0 since br relaxations will
444 increase the code size. Defer it to pass 1. */
445 if (link_info
->relax_pass
== 0)
447 skip_relax_pass_1
= FALSE
;
457 /* Get the value of the symbol referred to by the reloc. */
458 if (ELFNN_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
460 /* A local symbol. */
461 Elf_Internal_Sym
*isym
;
463 /* Read this BFD's local symbols. */
466 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
468 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
469 symtab_hdr
->sh_info
, 0,
475 isym
= isymbuf
+ ELFNN_R_SYM (irel
->r_info
);
476 if (isym
->st_shndx
== SHN_UNDEF
)
477 continue; /* We can't do anything with undefined symbols. */
478 else if (isym
->st_shndx
== SHN_ABS
)
479 tsec
= bfd_abs_section_ptr
;
480 else if (isym
->st_shndx
== SHN_COMMON
)
481 tsec
= bfd_com_section_ptr
;
482 else if (isym
->st_shndx
== SHN_IA_64_ANSI_COMMON
)
483 tsec
= bfd_com_section_ptr
;
485 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
487 toff
= isym
->st_value
;
488 dyn_i
= get_dyn_sym_info (ia64_info
, NULL
, abfd
, irel
, FALSE
);
489 symtype
= ELF_ST_TYPE (isym
->st_info
);
494 struct elf_link_hash_entry
*h
;
496 indx
= ELFNN_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
497 h
= elf_sym_hashes (abfd
)[indx
];
498 BFD_ASSERT (h
!= NULL
);
500 while (h
->root
.type
== bfd_link_hash_indirect
501 || h
->root
.type
== bfd_link_hash_warning
)
502 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
504 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, irel
, FALSE
);
506 /* For branches to dynamic symbols, we're interested instead
507 in a branch to the PLT entry. */
508 if (is_branch
&& dyn_i
&& dyn_i
->want_plt2
)
510 /* Internal branches shouldn't be sent to the PLT.
511 Leave this for now and we'll give an error later. */
512 if (r_type
!= R_IA64_PCREL21B
)
515 tsec
= ia64_info
->root
.splt
;
516 toff
= dyn_i
->plt2_offset
;
517 BFD_ASSERT (irel
->r_addend
== 0);
520 /* Can't do anything else with dynamic symbols. */
521 else if (elfNN_ia64_dynamic_symbol_p (h
, link_info
, r_type
))
526 /* We can't do anything with undefined symbols. */
527 if (h
->root
.type
== bfd_link_hash_undefined
528 || h
->root
.type
== bfd_link_hash_undefweak
)
531 tsec
= h
->root
.u
.def
.section
;
532 toff
= h
->root
.u
.def
.value
;
538 if (tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
540 /* At this stage in linking, no SEC_MERGE symbol has been
541 adjusted, so all references to such symbols need to be
542 passed through _bfd_merged_section_offset. (Later, in
543 relocate_section, all SEC_MERGE symbols *except* for
544 section symbols have been adjusted.)
546 gas may reduce relocations against symbols in SEC_MERGE
547 sections to a relocation against the section symbol when
548 the original addend was zero. When the reloc is against
549 a section symbol we should include the addend in the
550 offset passed to _bfd_merged_section_offset, since the
551 location of interest is the original symbol. On the
552 other hand, an access to "sym+addend" where "sym" is not
553 a section symbol should not include the addend; Such an
554 access is presumed to be an offset from "sym"; The
555 location of interest is just "sym". */
556 if (symtype
== STT_SECTION
)
557 toff
+= irel
->r_addend
;
559 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
560 elf_section_data (tsec
)->sec_info
,
563 if (symtype
!= STT_SECTION
)
564 toff
+= irel
->r_addend
;
567 toff
+= irel
->r_addend
;
569 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
571 roff
= irel
->r_offset
;
575 bfd_signed_vma offset
;
577 reladdr
= (sec
->output_section
->vma
579 + roff
) & (bfd_vma
) -4;
581 /* The .plt section is aligned at 32byte and the .text section
582 is aligned at 64byte. The .text section is right after the
583 .plt section. After the first relaxation pass, linker may
584 increase the gap between the .plt and .text sections up
585 to 32byte. We assume linker will always insert 32byte
586 between the .plt and .text sections after the first
588 if (tsec
== ia64_info
->root
.splt
)
589 offset
= -0x1000000 + 32;
593 /* If the branch is in range, no need to do anything. */
594 if ((bfd_signed_vma
) (symaddr
- reladdr
) >= offset
595 && (bfd_signed_vma
) (symaddr
- reladdr
) <= 0x0FFFFF0)
597 /* If the 60-bit branch is in 21-bit range, optimize it. */
598 if (r_type
== R_IA64_PCREL60B
)
600 ia64_elf_relax_brl (contents
, roff
);
603 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
606 /* If the original relocation offset points to slot
607 1, change it to slot 2. */
608 if ((irel
->r_offset
& 3) == 1)
611 changed_contents
= TRUE
;
612 changed_relocs
= TRUE
;
617 else if (r_type
== R_IA64_PCREL60B
)
619 else if (ia64_elf_relax_br (contents
, roff
))
622 = ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
625 /* Make the relocation offset point to slot 1. */
626 irel
->r_offset
= (irel
->r_offset
& ~((bfd_vma
) 0x3)) + 1;
628 changed_contents
= TRUE
;
629 changed_relocs
= TRUE
;
633 /* We can't put a trampoline in a .init/.fini section. Issue
635 if (strcmp (sec
->output_section
->name
, ".init") == 0
636 || strcmp (sec
->output_section
->name
, ".fini") == 0)
639 /* xgettext:c-format */
640 (_("%pB: can't relax br at %#" PRIx64
" in section `%pA';"
641 " please use brl or indirect branch"),
642 sec
->owner
, (uint64_t) roff
, sec
);
643 bfd_set_error (bfd_error_bad_value
);
647 /* If the branch and target are in the same section, you've
648 got one honking big section and we can't help you unless
649 you are branching backwards. You'll get an error message
651 if (tsec
== sec
&& toff
> roff
)
654 /* Look for an existing fixup to this address. */
655 for (f
= fixups
; f
; f
= f
->next
)
656 if (f
->tsec
== tsec
&& f
->toff
== toff
)
661 /* Two alternatives: If it's a branch to a PLT entry, we can
662 make a copy of the FULL_PLT entry. Otherwise, we'll have
663 to use a `brl' insn to get where we're going. */
667 if (tsec
== ia64_info
->root
.splt
)
668 size
= sizeof (plt_full_entry
);
670 size
= oor_branch_size
;
672 /* Resize the current section to make room for the new branch. */
673 trampoff
= (sec
->size
+ 15) & (bfd_vma
) -16;
675 /* If trampoline is out of range, there is nothing we
677 offset
= trampoff
- (roff
& (bfd_vma
) -4);
678 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
681 amt
= trampoff
+ size
;
682 contents
= (bfd_byte
*) bfd_realloc (contents
, amt
);
683 if (contents
== NULL
)
687 if (tsec
== ia64_info
->root
.splt
)
689 memcpy (contents
+ trampoff
, plt_full_entry
, size
);
691 /* Hijack the old relocation for use as the PLTOFF reloc. */
692 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
694 irel
->r_offset
= trampoff
;
698 if (size
== sizeof (oor_ip
))
700 memcpy (contents
+ trampoff
, oor_ip
, size
);
701 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
703 irel
->r_addend
-= 16;
704 irel
->r_offset
= trampoff
+ 2;
708 memcpy (contents
+ trampoff
, oor_brl
, size
);
709 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
711 irel
->r_offset
= trampoff
+ 2;
716 /* Record the fixup so we don't do it again this section. */
717 f
= (struct one_fixup
*)
718 bfd_malloc ((bfd_size_type
) sizeof (*f
));
722 f
->trampoff
= trampoff
;
727 /* If trampoline is out of range, there is nothing we
729 offset
= f
->trampoff
- (roff
& (bfd_vma
) -4);
730 if (offset
< -0x1000000 || offset
> 0x0FFFFF0)
733 /* Nop out the reloc, since we're finalizing things here. */
734 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
737 /* Fix up the existing branch to hit the trampoline. */
738 if (ia64_elf_install_value (contents
+ roff
, offset
, r_type
)
742 changed_contents
= TRUE
;
743 changed_relocs
= TRUE
;
750 bfd
*obfd
= sec
->output_section
->owner
;
751 gp
= _bfd_get_gp_value (obfd
);
754 if (!elfNN_ia64_choose_gp (obfd
, link_info
, FALSE
))
756 gp
= _bfd_get_gp_value (obfd
);
760 /* If the data is out of range, do nothing. */
761 if ((bfd_signed_vma
) (symaddr
- gp
) >= 0x200000
762 ||(bfd_signed_vma
) (symaddr
- gp
) < -0x200000)
765 if (r_type
== R_IA64_GPREL22
)
766 elfNN_ia64_update_short_info (tsec
->output_section
,
767 tsec
->output_offset
+ toff
,
769 else if (r_type
== R_IA64_LTOFF22X
)
771 irel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (irel
->r_info
),
773 changed_relocs
= TRUE
;
774 if (dyn_i
->want_gotx
)
776 dyn_i
->want_gotx
= 0;
777 changed_got
|= !dyn_i
->want_got
;
780 elfNN_ia64_update_short_info (tsec
->output_section
,
781 tsec
->output_offset
+ toff
,
786 ia64_elf_relax_ldxmov (contents
, roff
);
787 irel
->r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
788 changed_contents
= TRUE
;
789 changed_relocs
= TRUE
;
794 /* ??? If we created fixups, this may push the code segment large
795 enough that the data segment moves, which will change the GP.
796 Reset the GP so that we re-calculate next round. We need to
797 do this at the _beginning_ of the next round; now will not do. */
799 /* Clean up and go home. */
802 struct one_fixup
*f
= fixups
;
803 fixups
= fixups
->next
;
808 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
810 if (! link_info
->keep_memory
)
814 /* Cache the symbols for elf_link_input_bfd. */
815 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
820 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
822 if (!changed_contents
&& !link_info
->keep_memory
)
826 /* Cache the section contents for elf_link_input_bfd. */
827 elf_section_data (sec
)->this_hdr
.contents
= contents
;
831 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
834 free (internal_relocs
);
836 elf_section_data (sec
)->relocs
= internal_relocs
;
841 struct elfNN_ia64_allocate_data data
;
842 data
.info
= link_info
;
844 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
846 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
847 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
848 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
849 ia64_info
->root
.sgot
->size
= data
.ofs
;
851 if (ia64_info
->root
.dynamic_sections_created
852 && ia64_info
->root
.srelgot
!= NULL
)
854 /* Resize .rela.got. */
855 ia64_info
->root
.srelgot
->size
= 0;
856 if (bfd_link_pic (link_info
)
857 && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
858 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
859 data
.only_got
= TRUE
;
860 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
,
865 if (link_info
->relax_pass
== 0)
867 /* Pass 0 is only needed to relax br. */
868 sec
->skip_relax_pass_0
= skip_relax_pass_0
;
869 sec
->skip_relax_pass_1
= skip_relax_pass_1
;
872 *again
= changed_contents
|| changed_relocs
;
876 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
879 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
881 if (internal_relocs
!= NULL
882 && elf_section_data (sec
)->relocs
!= internal_relocs
)
883 free (internal_relocs
);
886 #undef skip_relax_pass_0
887 #undef skip_relax_pass_1
889 /* Return TRUE if NAME is an unwind table section name. */
891 static inline bfd_boolean
892 is_unwind_section_name (bfd
*abfd
, const char *name
)
894 if (elfNN_ia64_hpux_vec (abfd
->xvec
)
895 && !strcmp (name
, ELF_STRING_ia64_unwind_hdr
))
898 return ((CONST_STRNEQ (name
, ELF_STRING_ia64_unwind
)
899 && ! CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_info
))
900 || CONST_STRNEQ (name
, ELF_STRING_ia64_unwind_once
));
903 /* Handle an IA-64 specific section when reading an object file. This
904 is called when bfd_section_from_shdr finds a section with an unknown
908 elfNN_ia64_section_from_shdr (bfd
*abfd
,
909 Elf_Internal_Shdr
*hdr
,
913 /* There ought to be a place to keep ELF backend specific flags, but
914 at the moment there isn't one. We just keep track of the
915 sections by their name, instead. Fortunately, the ABI gives
916 suggested names for all the MIPS specific sections, so we will
917 probably get away with this. */
918 switch (hdr
->sh_type
)
920 case SHT_IA_64_UNWIND
:
921 case SHT_IA_64_HP_OPT_ANOT
:
925 if (strcmp (name
, ELF_STRING_ia64_archext
) != 0)
933 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
939 /* Convert IA-64 specific section flags to bfd internal section flags. */
941 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
945 elfNN_ia64_section_flags (const Elf_Internal_Shdr
*hdr
)
947 if (hdr
->sh_flags
& SHF_IA_64_SHORT
)
948 hdr
->bfd_section
->flags
|= SEC_SMALL_DATA
;
953 /* Set the correct type for an IA-64 ELF section. We do this by the
954 section name, which is a hack, but ought to work. */
957 elfNN_ia64_fake_sections (bfd
*abfd
, Elf_Internal_Shdr
*hdr
,
962 name
= bfd_section_name (sec
);
964 if (is_unwind_section_name (abfd
, name
))
966 /* We don't have the sections numbered at this point, so sh_info
967 is set later, in elfNN_ia64_final_write_processing. */
968 hdr
->sh_type
= SHT_IA_64_UNWIND
;
969 hdr
->sh_flags
|= SHF_LINK_ORDER
;
971 else if (strcmp (name
, ELF_STRING_ia64_archext
) == 0)
972 hdr
->sh_type
= SHT_IA_64_EXT
;
973 else if (strcmp (name
, ".HP.opt_annot") == 0)
974 hdr
->sh_type
= SHT_IA_64_HP_OPT_ANOT
;
975 else if (strcmp (name
, ".reloc") == 0)
976 /* This is an ugly, but unfortunately necessary hack that is
977 needed when producing EFI binaries on IA-64. It tells
978 elf.c:elf_fake_sections() not to consider ".reloc" as a section
979 containing ELF relocation info. We need this hack in order to
980 be able to generate ELF binaries that can be translated into
981 EFI applications (which are essentially COFF objects). Those
982 files contain a COFF ".reloc" section inside an ELFNN object,
983 which would normally cause BFD to segfault because it would
984 attempt to interpret this section as containing relocation
985 entries for section "oc". With this hack enabled, ".reloc"
986 will be treated as a normal data section, which will avoid the
987 segfault. However, you won't be able to create an ELFNN binary
988 with a section named "oc" that needs relocations, but that's
989 the kind of ugly side-effects you get when detecting section
990 types based on their names... In practice, this limitation is
992 hdr
->sh_type
= SHT_PROGBITS
;
994 if (sec
->flags
& SEC_SMALL_DATA
)
995 hdr
->sh_flags
|= SHF_IA_64_SHORT
;
997 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
999 if (elfNN_ia64_hpux_vec (abfd
->xvec
) && (sec
->flags
& SHF_TLS
))
1000 hdr
->sh_flags
|= SHF_IA_64_HP_TLS
;
1005 /* The final processing done just before writing out an IA-64 ELF
1009 elfNN_ia64_final_write_processing (bfd
*abfd
)
1011 Elf_Internal_Shdr
*hdr
;
1014 for (s
= abfd
->sections
; s
; s
= s
->next
)
1016 hdr
= &elf_section_data (s
)->this_hdr
;
1017 switch (hdr
->sh_type
)
1019 case SHT_IA_64_UNWIND
:
1020 /* The IA-64 processor-specific ABI requires setting sh_link
1021 to the unwind section, whereas HP-UX requires sh_info to
1022 do so. For maximum compatibility, we'll set both for
1024 hdr
->sh_info
= hdr
->sh_link
;
1029 if (! elf_flags_init (abfd
))
1031 unsigned long flags
= 0;
1033 if (abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
)
1034 flags
|= EF_IA_64_BE
;
1035 if (bfd_get_mach (abfd
) == bfd_mach_ia64_elf64
)
1036 flags
|= EF_IA_64_ABI64
;
1038 elf_elfheader(abfd
)->e_flags
= flags
;
1039 elf_flags_init (abfd
) = TRUE
;
1041 return _bfd_elf_final_write_processing (abfd
);
1044 /* Hook called by the linker routine which adds symbols from an object
1045 file. We use it to put .comm items in .sbss, and not .bss. */
1048 elfNN_ia64_add_symbol_hook (bfd
*abfd
,
1049 struct bfd_link_info
*info
,
1050 Elf_Internal_Sym
*sym
,
1051 const char **namep ATTRIBUTE_UNUSED
,
1052 flagword
*flagsp ATTRIBUTE_UNUSED
,
1056 if (sym
->st_shndx
== SHN_COMMON
1057 && !bfd_link_relocatable (info
)
1058 && sym
->st_size
<= elf_gp_size (abfd
))
1060 /* Common symbols less than or equal to -G nn bytes are
1061 automatically put into .sbss. */
1063 asection
*scomm
= bfd_get_section_by_name (abfd
, ".scommon");
1067 scomm
= bfd_make_section_with_flags (abfd
, ".scommon",
1070 | SEC_LINKER_CREATED
));
1076 *valp
= sym
->st_size
;
1082 /* Return the number of additional phdrs we will need. */
1085 elfNN_ia64_additional_program_headers (bfd
*abfd
,
1086 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1091 /* See if we need a PT_IA_64_ARCHEXT segment. */
1092 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1093 if (s
&& (s
->flags
& SEC_LOAD
))
1096 /* Count how many PT_IA_64_UNWIND segments we need. */
1097 for (s
= abfd
->sections
; s
; s
= s
->next
)
1098 if (is_unwind_section_name (abfd
, s
->name
) && (s
->flags
& SEC_LOAD
))
1105 elfNN_ia64_modify_segment_map (bfd
*abfd
,
1106 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1108 struct elf_segment_map
*m
, **pm
;
1109 Elf_Internal_Shdr
*hdr
;
1112 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1113 all PT_LOAD segments. */
1114 s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_archext
);
1115 if (s
&& (s
->flags
& SEC_LOAD
))
1117 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1118 if (m
->p_type
== PT_IA_64_ARCHEXT
)
1122 m
= ((struct elf_segment_map
*)
1123 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1127 m
->p_type
= PT_IA_64_ARCHEXT
;
1131 /* We want to put it after the PHDR and INTERP segments. */
1132 pm
= &elf_seg_map (abfd
);
1134 && ((*pm
)->p_type
== PT_PHDR
1135 || (*pm
)->p_type
== PT_INTERP
))
1143 /* Install PT_IA_64_UNWIND segments, if needed. */
1144 for (s
= abfd
->sections
; s
; s
= s
->next
)
1146 hdr
= &elf_section_data (s
)->this_hdr
;
1147 if (hdr
->sh_type
!= SHT_IA_64_UNWIND
)
1150 if (s
&& (s
->flags
& SEC_LOAD
))
1152 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
1153 if (m
->p_type
== PT_IA_64_UNWIND
)
1157 /* Look through all sections in the unwind segment
1158 for a match since there may be multiple sections
1160 for (i
= m
->count
- 1; i
>= 0; --i
)
1161 if (m
->sections
[i
] == s
)
1170 m
= ((struct elf_segment_map
*)
1171 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
1175 m
->p_type
= PT_IA_64_UNWIND
;
1180 /* We want to put it last. */
1181 pm
= &elf_seg_map (abfd
);
1192 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1193 the input sections for each output section in the segment and testing
1194 for SHF_IA_64_NORECOV on each. */
1197 elfNN_ia64_modify_headers (bfd
*abfd
, struct bfd_link_info
*info
)
1199 struct elf_obj_tdata
*tdata
= elf_tdata (abfd
);
1200 struct elf_segment_map
*m
;
1201 Elf_Internal_Phdr
*p
;
1203 for (p
= tdata
->phdr
, m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
, p
++)
1204 if (m
->p_type
== PT_LOAD
)
1207 for (i
= m
->count
- 1; i
>= 0; --i
)
1209 struct bfd_link_order
*order
= m
->sections
[i
]->map_head
.link_order
;
1211 while (order
!= NULL
)
1213 if (order
->type
== bfd_indirect_link_order
)
1215 asection
*is
= order
->u
.indirect
.section
;
1216 bfd_vma flags
= elf_section_data(is
)->this_hdr
.sh_flags
;
1217 if (flags
& SHF_IA_64_NORECOV
)
1219 p
->p_flags
|= PF_IA_64_NORECOV
;
1223 order
= order
->next
;
1229 return _bfd_elf_modify_headers (abfd
, info
);
1232 /* According to the Tahoe assembler spec, all labels starting with a
1236 elfNN_ia64_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
,
1239 return name
[0] == '.';
1242 /* Should we do dynamic things to this symbol? */
1245 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry
*h
,
1246 struct bfd_link_info
*info
, int r_type
)
1248 bfd_boolean ignore_protected
1249 = ((r_type
& 0xf8) == 0x40 /* FPTR relocs */
1250 || (r_type
& 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1252 return _bfd_elf_dynamic_symbol_p (h
, info
, ignore_protected
);
1255 static struct bfd_hash_entry
*
1256 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry
*entry
,
1257 struct bfd_hash_table
*table
,
1260 struct elfNN_ia64_link_hash_entry
*ret
;
1261 ret
= (struct elfNN_ia64_link_hash_entry
*) entry
;
1263 /* Allocate the structure if it has not already been allocated by a
1266 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
1271 /* Call the allocation method of the superclass. */
1272 ret
= ((struct elfNN_ia64_link_hash_entry
*)
1273 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1278 ret
->sorted_count
= 0;
1280 return (struct bfd_hash_entry
*) ret
;
1284 elfNN_ia64_hash_copy_indirect (struct bfd_link_info
*info
,
1285 struct elf_link_hash_entry
*xdir
,
1286 struct elf_link_hash_entry
*xind
)
1288 struct elfNN_ia64_link_hash_entry
*dir
, *ind
;
1290 dir
= (struct elfNN_ia64_link_hash_entry
*) xdir
;
1291 ind
= (struct elfNN_ia64_link_hash_entry
*) xind
;
1293 /* Copy down any references that we may have already seen to the
1294 symbol which just became indirect. */
1296 if (dir
->root
.versioned
!= versioned_hidden
)
1297 dir
->root
.ref_dynamic
|= ind
->root
.ref_dynamic
;
1298 dir
->root
.ref_regular
|= ind
->root
.ref_regular
;
1299 dir
->root
.ref_regular_nonweak
|= ind
->root
.ref_regular_nonweak
;
1300 dir
->root
.needs_plt
|= ind
->root
.needs_plt
;
1302 if (ind
->root
.root
.type
!= bfd_link_hash_indirect
)
1305 /* Copy over the got and plt data. This would have been done
1308 if (ind
->info
!= NULL
)
1310 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1316 dir
->info
= ind
->info
;
1317 dir
->count
= ind
->count
;
1318 dir
->sorted_count
= ind
->sorted_count
;
1319 dir
->size
= ind
->size
;
1323 ind
->sorted_count
= 0;
1326 /* Fix up the dyn_sym_info pointers to the global symbol. */
1327 for (count
= dir
->count
, dyn_i
= dir
->info
;
1330 dyn_i
->h
= &dir
->root
;
1333 /* Copy over the dynindx. */
1335 if (ind
->root
.dynindx
!= -1)
1337 if (dir
->root
.dynindx
!= -1)
1338 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1339 dir
->root
.dynstr_index
);
1340 dir
->root
.dynindx
= ind
->root
.dynindx
;
1341 dir
->root
.dynstr_index
= ind
->root
.dynstr_index
;
1342 ind
->root
.dynindx
= -1;
1343 ind
->root
.dynstr_index
= 0;
1348 elfNN_ia64_hash_hide_symbol (struct bfd_link_info
*info
,
1349 struct elf_link_hash_entry
*xh
,
1350 bfd_boolean force_local
)
1352 struct elfNN_ia64_link_hash_entry
*h
;
1353 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1356 h
= (struct elfNN_ia64_link_hash_entry
*)xh
;
1358 _bfd_elf_link_hash_hide_symbol (info
, &h
->root
, force_local
);
1360 for (count
= h
->count
, dyn_i
= h
->info
;
1364 dyn_i
->want_plt2
= 0;
1365 dyn_i
->want_plt
= 0;
1369 /* Compute a hash of a local hash entry. */
1372 elfNN_ia64_local_htab_hash (const void *ptr
)
1374 struct elfNN_ia64_local_hash_entry
*entry
1375 = (struct elfNN_ia64_local_hash_entry
*) ptr
;
1377 return ELF_LOCAL_SYMBOL_HASH (entry
->id
, entry
->r_sym
);
1380 /* Compare local hash entries. */
1383 elfNN_ia64_local_htab_eq (const void *ptr1
, const void *ptr2
)
1385 struct elfNN_ia64_local_hash_entry
*entry1
1386 = (struct elfNN_ia64_local_hash_entry
*) ptr1
;
1387 struct elfNN_ia64_local_hash_entry
*entry2
1388 = (struct elfNN_ia64_local_hash_entry
*) ptr2
;
1390 return entry1
->id
== entry2
->id
&& entry1
->r_sym
== entry2
->r_sym
;
1393 /* Free the global elfNN_ia64_dyn_sym_info array. */
1396 elfNN_ia64_global_dyn_info_free (void **xentry
,
1397 void * unused ATTRIBUTE_UNUSED
)
1399 struct elfNN_ia64_link_hash_entry
*entry
1400 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1407 entry
->sorted_count
= 0;
1414 /* Free the local elfNN_ia64_dyn_sym_info array. */
1417 elfNN_ia64_local_dyn_info_free (void **slot
,
1418 void * unused ATTRIBUTE_UNUSED
)
1420 struct elfNN_ia64_local_hash_entry
*entry
1421 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1428 entry
->sorted_count
= 0;
1435 /* Destroy IA-64 linker hash table. */
1438 elfNN_ia64_link_hash_table_free (bfd
*obfd
)
1440 struct elfNN_ia64_link_hash_table
*ia64_info
1441 = (struct elfNN_ia64_link_hash_table
*) obfd
->link
.hash
;
1442 if (ia64_info
->loc_hash_table
)
1444 htab_traverse (ia64_info
->loc_hash_table
,
1445 elfNN_ia64_local_dyn_info_free
, NULL
);
1446 htab_delete (ia64_info
->loc_hash_table
);
1448 if (ia64_info
->loc_hash_memory
)
1449 objalloc_free ((struct objalloc
*) ia64_info
->loc_hash_memory
);
1450 elf_link_hash_traverse (&ia64_info
->root
,
1451 elfNN_ia64_global_dyn_info_free
, NULL
);
1452 _bfd_elf_link_hash_table_free (obfd
);
1455 /* Create the derived linker hash table. The IA-64 ELF port uses this
1456 derived hash table to keep information specific to the IA-64 ElF
1457 linker (without using static variables). */
1459 static struct bfd_link_hash_table
*
1460 elfNN_ia64_hash_table_create (bfd
*abfd
)
1462 struct elfNN_ia64_link_hash_table
*ret
;
1464 ret
= bfd_zmalloc ((bfd_size_type
) sizeof (*ret
));
1468 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1469 elfNN_ia64_new_elf_hash_entry
,
1470 sizeof (struct elfNN_ia64_link_hash_entry
),
1477 ret
->loc_hash_table
= htab_try_create (1024, elfNN_ia64_local_htab_hash
,
1478 elfNN_ia64_local_htab_eq
, NULL
);
1479 ret
->loc_hash_memory
= objalloc_create ();
1480 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
1482 elfNN_ia64_link_hash_table_free (abfd
);
1485 ret
->root
.root
.hash_table_free
= elfNN_ia64_link_hash_table_free
;
1487 return &ret
->root
.root
;
1490 /* Traverse both local and global hash tables. */
1492 struct elfNN_ia64_dyn_sym_traverse_data
1494 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *);
1499 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry
*xentry
,
1502 struct elfNN_ia64_link_hash_entry
*entry
1503 = (struct elfNN_ia64_link_hash_entry
*) xentry
;
1504 struct elfNN_ia64_dyn_sym_traverse_data
*data
1505 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1506 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1509 for (count
= entry
->count
, dyn_i
= entry
->info
;
1512 if (! (*data
->func
) (dyn_i
, data
->data
))
1518 elfNN_ia64_local_dyn_sym_thunk (void **slot
, void * xdata
)
1520 struct elfNN_ia64_local_hash_entry
*entry
1521 = (struct elfNN_ia64_local_hash_entry
*) *slot
;
1522 struct elfNN_ia64_dyn_sym_traverse_data
*data
1523 = (struct elfNN_ia64_dyn_sym_traverse_data
*) xdata
;
1524 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
1527 for (count
= entry
->count
, dyn_i
= entry
->info
;
1530 if (! (*data
->func
) (dyn_i
, data
->data
))
1536 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table
*ia64_info
,
1537 bfd_boolean (*func
) (struct elfNN_ia64_dyn_sym_info
*, void *),
1540 struct elfNN_ia64_dyn_sym_traverse_data xdata
;
1545 elf_link_hash_traverse (&ia64_info
->root
,
1546 elfNN_ia64_global_dyn_sym_thunk
, &xdata
);
1547 htab_traverse (ia64_info
->loc_hash_table
,
1548 elfNN_ia64_local_dyn_sym_thunk
, &xdata
);
1552 elfNN_ia64_create_dynamic_sections (bfd
*abfd
,
1553 struct bfd_link_info
*info
)
1555 struct elfNN_ia64_link_hash_table
*ia64_info
;
1558 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
1561 ia64_info
= elfNN_ia64_hash_table (info
);
1562 if (ia64_info
== NULL
)
1566 flagword flags
= bfd_section_flags (ia64_info
->root
.sgot
);
1567 bfd_set_section_flags (ia64_info
->root
.sgot
, SEC_SMALL_DATA
| flags
);
1568 /* The .got section is always aligned at 8 bytes. */
1569 if (!bfd_set_section_alignment (ia64_info
->root
.sgot
, 3))
1573 if (!get_pltoff (abfd
, info
, ia64_info
))
1576 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.IA_64.pltoff",
1577 (SEC_ALLOC
| SEC_LOAD
1580 | SEC_LINKER_CREATED
1583 || !bfd_set_section_alignment (s
, LOG_SECTION_ALIGN
))
1585 ia64_info
->rel_pltoff_sec
= s
;
1590 /* Find and/or create a hash entry for local symbol. */
1591 static struct elfNN_ia64_local_hash_entry
*
1592 get_local_sym_hash (struct elfNN_ia64_link_hash_table
*ia64_info
,
1593 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
1596 struct elfNN_ia64_local_hash_entry e
, *ret
;
1597 asection
*sec
= abfd
->sections
;
1598 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
1599 ELFNN_R_SYM (rel
->r_info
));
1603 e
.r_sym
= ELFNN_R_SYM (rel
->r_info
);
1604 slot
= htab_find_slot_with_hash (ia64_info
->loc_hash_table
, &e
, h
,
1605 create
? INSERT
: NO_INSERT
);
1611 return (struct elfNN_ia64_local_hash_entry
*) *slot
;
1613 ret
= (struct elfNN_ia64_local_hash_entry
*)
1614 objalloc_alloc ((struct objalloc
*) ia64_info
->loc_hash_memory
,
1615 sizeof (struct elfNN_ia64_local_hash_entry
));
1618 memset (ret
, 0, sizeof (*ret
));
1620 ret
->r_sym
= ELFNN_R_SYM (rel
->r_info
);
1626 /* Used to sort elfNN_ia64_dyn_sym_info array. */
1629 addend_compare (const void *xp
, const void *yp
)
1631 const struct elfNN_ia64_dyn_sym_info
*x
1632 = (const struct elfNN_ia64_dyn_sym_info
*) xp
;
1633 const struct elfNN_ia64_dyn_sym_info
*y
1634 = (const struct elfNN_ia64_dyn_sym_info
*) yp
;
1636 return x
->addend
< y
->addend
? -1 : x
->addend
> y
->addend
? 1 : 0;
1639 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1642 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info
*info
,
1645 bfd_vma curr
, prev
, got_offset
;
1646 unsigned int i
, kept
, dupes
, diff
, dest
, src
, len
;
1648 qsort (info
, count
, sizeof (*info
), addend_compare
);
1650 /* Find the first duplicate. */
1651 prev
= info
[0].addend
;
1652 got_offset
= info
[0].got_offset
;
1653 for (i
= 1; i
< count
; i
++)
1655 curr
= info
[i
].addend
;
1658 /* For duplicates, make sure that GOT_OFFSET is valid. */
1659 if (got_offset
== (bfd_vma
) -1)
1660 got_offset
= info
[i
].got_offset
;
1663 got_offset
= info
[i
].got_offset
;
1667 /* We may move a block of elements to here. */
1670 /* Remove duplicates. */
1675 /* For duplicates, make sure that the kept one has a valid
1678 if (got_offset
!= (bfd_vma
) -1)
1679 info
[kept
].got_offset
= got_offset
;
1681 curr
= info
[i
].addend
;
1682 got_offset
= info
[i
].got_offset
;
1684 /* Move a block of elements whose first one is different from
1688 for (src
= i
+ 1; src
< count
; src
++)
1690 if (info
[src
].addend
!= curr
)
1692 /* For duplicates, make sure that GOT_OFFSET is
1694 if (got_offset
== (bfd_vma
) -1)
1695 got_offset
= info
[src
].got_offset
;
1698 /* Make sure that the kept one has a valid got_offset. */
1699 if (got_offset
!= (bfd_vma
) -1)
1700 info
[kept
].got_offset
= got_offset
;
1708 /* Find the next duplicate. SRC will be kept. */
1709 prev
= info
[src
].addend
;
1710 got_offset
= info
[src
].got_offset
;
1711 for (dupes
= src
+ 1; dupes
< count
; dupes
++)
1713 curr
= info
[dupes
].addend
;
1716 /* Make sure that got_offset is valid. */
1717 if (got_offset
== (bfd_vma
) -1)
1718 got_offset
= info
[dupes
].got_offset
;
1720 /* For duplicates, make sure that the kept one has
1721 a valid got_offset. */
1722 if (got_offset
!= (bfd_vma
) -1)
1723 info
[dupes
- 1].got_offset
= got_offset
;
1726 got_offset
= info
[dupes
].got_offset
;
1730 /* How much to move. */
1734 if (len
== 1 && dupes
< count
)
1736 /* If we only move 1 element, we combine it with the next
1737 one. There must be at least a duplicate. Find the
1738 next different one. */
1739 for (diff
= dupes
+ 1, src
++; diff
< count
; diff
++, src
++)
1741 if (info
[diff
].addend
!= curr
)
1743 /* Make sure that got_offset is valid. */
1744 if (got_offset
== (bfd_vma
) -1)
1745 got_offset
= info
[diff
].got_offset
;
1748 /* Makre sure that the last duplicated one has an valid
1750 BFD_ASSERT (curr
== prev
);
1751 if (got_offset
!= (bfd_vma
) -1)
1752 info
[diff
- 1].got_offset
= got_offset
;
1756 /* Find the next duplicate. Track the current valid
1758 prev
= info
[diff
].addend
;
1759 got_offset
= info
[diff
].got_offset
;
1760 for (dupes
= diff
+ 1; dupes
< count
; dupes
++)
1762 curr
= info
[dupes
].addend
;
1765 /* For duplicates, make sure that GOT_OFFSET
1767 if (got_offset
== (bfd_vma
) -1)
1768 got_offset
= info
[dupes
].got_offset
;
1771 got_offset
= info
[dupes
].got_offset
;
1776 len
= diff
- src
+ 1;
1781 memmove (&info
[dest
], &info
[src
], len
* sizeof (*info
));
1790 /* When we get here, either there is no duplicate at all or
1791 the only duplicate is the last element. */
1794 /* If the last element is a duplicate, make sure that the
1795 kept one has a valid got_offset. We also update count. */
1796 if (got_offset
!= (bfd_vma
) -1)
1797 info
[dest
- 1].got_offset
= got_offset
;
1805 /* Find and/or create a descriptor for dynamic symbol info. This will
1806 vary based on global or local symbol, and the addend to the reloc.
1808 We don't sort when inserting. Also, we sort and eliminate
1809 duplicates if there is an unsorted section. Typically, this will
1810 only happen once, because we do all insertions before lookups. We
1811 then use bsearch to do a lookup. This also allows lookups to be
1812 fast. So we have fast insertion (O(log N) due to duplicate check),
1813 fast lookup (O(log N)) and one sort (O(N log N) expected time).
1814 Previously, all lookups were O(N) because of the use of the linked
1815 list and also all insertions were O(N) because of the check for
1816 duplicates. There are some complications here because the array
1817 size grows occasionally, which may add an O(N) factor, but this
1818 should be rare. Also, we free the excess array allocation, which
1819 requires a copy which is O(N), but this only happens once. */
1821 static struct elfNN_ia64_dyn_sym_info
*
1822 get_dyn_sym_info (struct elfNN_ia64_link_hash_table
*ia64_info
,
1823 struct elf_link_hash_entry
*h
, bfd
*abfd
,
1824 const Elf_Internal_Rela
*rel
, bfd_boolean create
)
1826 struct elfNN_ia64_dyn_sym_info
**info_p
, *info
, *dyn_i
, key
;
1827 unsigned int *count_p
, *sorted_count_p
, *size_p
;
1828 unsigned int count
, sorted_count
, size
;
1829 bfd_vma addend
= rel
? rel
->r_addend
: 0;
1834 struct elfNN_ia64_link_hash_entry
*global_h
;
1836 global_h
= (struct elfNN_ia64_link_hash_entry
*) h
;
1837 info_p
= &global_h
->info
;
1838 count_p
= &global_h
->count
;
1839 sorted_count_p
= &global_h
->sorted_count
;
1840 size_p
= &global_h
->size
;
1844 struct elfNN_ia64_local_hash_entry
*loc_h
;
1846 loc_h
= get_local_sym_hash (ia64_info
, abfd
, rel
, create
);
1849 BFD_ASSERT (!create
);
1853 info_p
= &loc_h
->info
;
1854 count_p
= &loc_h
->count
;
1855 sorted_count_p
= &loc_h
->sorted_count
;
1856 size_p
= &loc_h
->size
;
1860 sorted_count
= *sorted_count_p
;
1865 /* When we create the array, we don't check for duplicates,
1866 except in the previously sorted section if one exists, and
1867 against the last inserted entry. This allows insertions to
1873 /* Try bsearch first on the sorted section. */
1874 key
.addend
= addend
;
1875 dyn_i
= bsearch (&key
, info
, sorted_count
,
1876 sizeof (*info
), addend_compare
);
1884 /* Do a quick check for the last inserted entry. */
1885 dyn_i
= info
+ count
- 1;
1886 if (dyn_i
->addend
== addend
)
1894 /* It is the very first element. We create the array of size
1897 amt
= size
* sizeof (*info
);
1898 info
= bfd_malloc (amt
);
1900 else if (size
<= count
)
1902 /* We double the array size every time when we reach the
1905 amt
= size
* sizeof (*info
);
1906 info
= bfd_realloc (info
, amt
);
1917 /* Append the new one to the array. */
1918 dyn_i
= info
+ count
;
1919 memset (dyn_i
, 0, sizeof (*dyn_i
));
1920 dyn_i
->got_offset
= (bfd_vma
) -1;
1921 dyn_i
->addend
= addend
;
1923 /* We increment count only since the new ones are unsorted and
1924 may have duplicate. */
1929 /* It is a lookup without insertion. Sort array if part of the
1930 array isn't sorted. */
1931 if (count
!= sorted_count
)
1933 count
= sort_dyn_sym_info (info
, count
);
1935 *sorted_count_p
= count
;
1938 /* Free unused memory. */
1941 amt
= count
* sizeof (*info
);
1942 info
= bfd_malloc (amt
);
1945 memcpy (info
, *info_p
, amt
);
1952 key
.addend
= addend
;
1953 dyn_i
= bsearch (&key
, info
, count
,
1954 sizeof (*info
), addend_compare
);
1961 get_got (bfd
*abfd
, struct bfd_link_info
*info
,
1962 struct elfNN_ia64_link_hash_table
*ia64_info
)
1967 got
= ia64_info
->root
.sgot
;
1972 dynobj
= ia64_info
->root
.dynobj
;
1974 ia64_info
->root
.dynobj
= dynobj
= abfd
;
1975 if (!_bfd_elf_create_got_section (dynobj
, info
))
1978 got
= ia64_info
->root
.sgot
;
1980 /* The .got section is always aligned at 8 bytes. */
1981 if (!bfd_set_section_alignment (got
, 3))
1984 flags
= bfd_section_flags (got
);
1985 if (!bfd_set_section_flags (got
, SEC_SMALL_DATA
| flags
))
1992 /* Create function descriptor section (.opd). This section is called .opd
1993 because it contains "official procedure descriptors". The "official"
1994 refers to the fact that these descriptors are used when taking the address
1995 of a procedure, thus ensuring a unique address for each procedure. */
1998 get_fptr (bfd
*abfd
, struct bfd_link_info
*info
,
1999 struct elfNN_ia64_link_hash_table
*ia64_info
)
2004 fptr
= ia64_info
->fptr_sec
;
2007 dynobj
= ia64_info
->root
.dynobj
;
2009 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2011 fptr
= bfd_make_section_anyway_with_flags (dynobj
, ".opd",
2016 | (bfd_link_pie (info
)
2018 | SEC_LINKER_CREATED
));
2020 || !bfd_set_section_alignment (fptr
, 4))
2026 ia64_info
->fptr_sec
= fptr
;
2028 if (bfd_link_pie (info
))
2031 fptr_rel
= bfd_make_section_anyway_with_flags (dynobj
, ".rela.opd",
2032 (SEC_ALLOC
| SEC_LOAD
2035 | SEC_LINKER_CREATED
2037 if (fptr_rel
== NULL
2038 || !bfd_set_section_alignment (fptr_rel
, LOG_SECTION_ALIGN
))
2044 ia64_info
->rel_fptr_sec
= fptr_rel
;
2052 get_pltoff (bfd
*abfd
, struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2053 struct elfNN_ia64_link_hash_table
*ia64_info
)
2058 pltoff
= ia64_info
->pltoff_sec
;
2061 dynobj
= ia64_info
->root
.dynobj
;
2063 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2065 pltoff
= bfd_make_section_anyway_with_flags (dynobj
,
2066 ELF_STRING_ia64_pltoff
,
2072 | SEC_LINKER_CREATED
));
2074 || !bfd_set_section_alignment (pltoff
, 4))
2080 ia64_info
->pltoff_sec
= pltoff
;
2087 get_reloc_section (bfd
*abfd
,
2088 struct elfNN_ia64_link_hash_table
*ia64_info
,
2089 asection
*sec
, bfd_boolean create
)
2091 const char *srel_name
;
2095 srel_name
= (bfd_elf_string_from_elf_section
2096 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
2097 _bfd_elf_single_rel_hdr (sec
)->sh_name
));
2098 if (srel_name
== NULL
)
2101 dynobj
= ia64_info
->root
.dynobj
;
2103 ia64_info
->root
.dynobj
= dynobj
= abfd
;
2105 srel
= bfd_get_linker_section (dynobj
, srel_name
);
2106 if (srel
== NULL
&& create
)
2108 srel
= bfd_make_section_anyway_with_flags (dynobj
, srel_name
,
2109 (SEC_ALLOC
| SEC_LOAD
2112 | SEC_LINKER_CREATED
2115 || !bfd_set_section_alignment (srel
, LOG_SECTION_ALIGN
))
2123 count_dyn_reloc (bfd
*abfd
, struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2124 asection
*srel
, int type
, bfd_boolean reltext
)
2126 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2128 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2129 if (rent
->srel
== srel
&& rent
->type
== type
)
2134 rent
= ((struct elfNN_ia64_dyn_reloc_entry
*)
2135 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
)));
2139 rent
->next
= dyn_i
->reloc_entries
;
2143 dyn_i
->reloc_entries
= rent
;
2145 rent
->reltext
= reltext
;
2152 elfNN_ia64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2154 const Elf_Internal_Rela
*relocs
)
2156 struct elfNN_ia64_link_hash_table
*ia64_info
;
2157 const Elf_Internal_Rela
*relend
;
2158 Elf_Internal_Shdr
*symtab_hdr
;
2159 const Elf_Internal_Rela
*rel
;
2160 asection
*got
, *fptr
, *srel
, *pltoff
;
2169 NEED_LTOFF_FPTR
= 128,
2175 struct elf_link_hash_entry
*h
;
2176 unsigned long r_symndx
;
2177 bfd_boolean maybe_dynamic
;
2179 if (bfd_link_relocatable (info
))
2182 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2183 ia64_info
= elfNN_ia64_hash_table (info
);
2184 if (ia64_info
== NULL
)
2187 got
= fptr
= srel
= pltoff
= NULL
;
2189 relend
= relocs
+ sec
->reloc_count
;
2191 /* We scan relocations first to create dynamic relocation arrays. We
2192 modified get_dyn_sym_info to allow fast insertion and support fast
2193 lookup in the next loop. */
2194 for (rel
= relocs
; rel
< relend
; ++rel
)
2196 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2197 if (r_symndx
>= symtab_hdr
->sh_info
)
2199 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2200 h
= elf_sym_hashes (abfd
)[indx
];
2201 while (h
->root
.type
== bfd_link_hash_indirect
2202 || h
->root
.type
== bfd_link_hash_warning
)
2203 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2208 if (h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2211 /* We can only get preliminary data on whether a symbol is
2212 locally or externally defined, as not all of the input files
2213 have yet been processed. Do something with what we know, as
2214 this may help reduce memory usage and processing time later. */
2215 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2216 && (!SYMBOLIC_BIND (info
, h
)
2217 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2219 || h
->root
.type
== bfd_link_hash_defweak
));
2222 switch (ELFNN_R_TYPE (rel
->r_info
))
2224 case R_IA64_TPREL64MSB
:
2225 case R_IA64_TPREL64LSB
:
2226 if (bfd_link_pic (info
) || maybe_dynamic
)
2227 need_entry
= NEED_DYNREL
;
2230 case R_IA64_LTOFF_TPREL22
:
2231 need_entry
= NEED_TPREL
;
2232 if (bfd_link_pic (info
))
2233 info
->flags
|= DF_STATIC_TLS
;
2236 case R_IA64_DTPREL32MSB
:
2237 case R_IA64_DTPREL32LSB
:
2238 case R_IA64_DTPREL64MSB
:
2239 case R_IA64_DTPREL64LSB
:
2240 if (bfd_link_pic (info
) || maybe_dynamic
)
2241 need_entry
= NEED_DYNREL
;
2244 case R_IA64_LTOFF_DTPREL22
:
2245 need_entry
= NEED_DTPREL
;
2248 case R_IA64_DTPMOD64MSB
:
2249 case R_IA64_DTPMOD64LSB
:
2250 if (bfd_link_pic (info
) || maybe_dynamic
)
2251 need_entry
= NEED_DYNREL
;
2254 case R_IA64_LTOFF_DTPMOD22
:
2255 need_entry
= NEED_DTPMOD
;
2258 case R_IA64_LTOFF_FPTR22
:
2259 case R_IA64_LTOFF_FPTR64I
:
2260 case R_IA64_LTOFF_FPTR32MSB
:
2261 case R_IA64_LTOFF_FPTR32LSB
:
2262 case R_IA64_LTOFF_FPTR64MSB
:
2263 case R_IA64_LTOFF_FPTR64LSB
:
2264 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2267 case R_IA64_FPTR64I
:
2268 case R_IA64_FPTR32MSB
:
2269 case R_IA64_FPTR32LSB
:
2270 case R_IA64_FPTR64MSB
:
2271 case R_IA64_FPTR64LSB
:
2272 if (bfd_link_pic (info
) || h
)
2273 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2275 need_entry
= NEED_FPTR
;
2278 case R_IA64_LTOFF22
:
2279 case R_IA64_LTOFF64I
:
2280 need_entry
= NEED_GOT
;
2283 case R_IA64_LTOFF22X
:
2284 need_entry
= NEED_GOTX
;
2287 case R_IA64_PLTOFF22
:
2288 case R_IA64_PLTOFF64I
:
2289 case R_IA64_PLTOFF64MSB
:
2290 case R_IA64_PLTOFF64LSB
:
2291 need_entry
= NEED_PLTOFF
;
2295 need_entry
|= NEED_MIN_PLT
;
2299 (*info
->callbacks
->warning
)
2300 (info
, _("@pltoff reloc against local symbol"), 0,
2301 abfd
, 0, (bfd_vma
) 0);
2305 case R_IA64_PCREL21B
:
2306 case R_IA64_PCREL60B
:
2307 /* Depending on where this symbol is defined, we may or may not
2308 need a full plt entry. Only skip if we know we'll not need
2309 the entry -- static or symbolic, and the symbol definition
2310 has already been seen. */
2311 if (maybe_dynamic
&& rel
->r_addend
== 0)
2312 need_entry
= NEED_FULL_PLT
;
2318 case R_IA64_DIR32MSB
:
2319 case R_IA64_DIR32LSB
:
2320 case R_IA64_DIR64MSB
:
2321 case R_IA64_DIR64LSB
:
2322 /* Shared objects will always need at least a REL relocation. */
2323 if (bfd_link_pic (info
) || maybe_dynamic
)
2324 need_entry
= NEED_DYNREL
;
2327 case R_IA64_IPLTMSB
:
2328 case R_IA64_IPLTLSB
:
2329 /* Shared objects will always need at least a REL relocation. */
2330 if (bfd_link_pic (info
) || maybe_dynamic
)
2331 need_entry
= NEED_DYNREL
;
2334 case R_IA64_PCREL22
:
2335 case R_IA64_PCREL64I
:
2336 case R_IA64_PCREL32MSB
:
2337 case R_IA64_PCREL32LSB
:
2338 case R_IA64_PCREL64MSB
:
2339 case R_IA64_PCREL64LSB
:
2341 need_entry
= NEED_DYNREL
;
2348 if ((need_entry
& NEED_FPTR
) != 0
2351 (*info
->callbacks
->warning
)
2352 (info
, _("non-zero addend in @fptr reloc"), 0,
2353 abfd
, 0, (bfd_vma
) 0);
2356 if (get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, TRUE
) == NULL
)
2360 /* Now, we only do lookup without insertion, which is very fast
2361 with the modified get_dyn_sym_info. */
2362 for (rel
= relocs
; rel
< relend
; ++rel
)
2364 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
2365 int dynrel_type
= R_IA64_NONE
;
2367 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
2368 if (r_symndx
>= symtab_hdr
->sh_info
)
2370 /* We're dealing with a global symbol -- find its hash entry
2371 and mark it as being referenced. */
2372 long indx
= r_symndx
- symtab_hdr
->sh_info
;
2373 h
= elf_sym_hashes (abfd
)[indx
];
2374 while (h
->root
.type
== bfd_link_hash_indirect
2375 || h
->root
.type
== bfd_link_hash_warning
)
2376 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2378 /* PR15323, ref flags aren't set for references in the same
2385 if (h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2388 /* We can only get preliminary data on whether a symbol is
2389 locally or externally defined, as not all of the input files
2390 have yet been processed. Do something with what we know, as
2391 this may help reduce memory usage and processing time later. */
2392 maybe_dynamic
= (h
&& ((!bfd_link_executable (info
)
2393 && (!SYMBOLIC_BIND (info
, h
)
2394 || info
->unresolved_syms_in_shared_libs
== RM_IGNORE
))
2396 || h
->root
.type
== bfd_link_hash_defweak
));
2399 switch (ELFNN_R_TYPE (rel
->r_info
))
2401 case R_IA64_TPREL64MSB
:
2402 case R_IA64_TPREL64LSB
:
2403 if (bfd_link_pic (info
) || maybe_dynamic
)
2404 need_entry
= NEED_DYNREL
;
2405 dynrel_type
= R_IA64_TPREL64LSB
;
2406 if (bfd_link_pic (info
))
2407 info
->flags
|= DF_STATIC_TLS
;
2410 case R_IA64_LTOFF_TPREL22
:
2411 need_entry
= NEED_TPREL
;
2412 if (bfd_link_pic (info
))
2413 info
->flags
|= DF_STATIC_TLS
;
2416 case R_IA64_DTPREL32MSB
:
2417 case R_IA64_DTPREL32LSB
:
2418 case R_IA64_DTPREL64MSB
:
2419 case R_IA64_DTPREL64LSB
:
2420 if (bfd_link_pic (info
) || maybe_dynamic
)
2421 need_entry
= NEED_DYNREL
;
2422 dynrel_type
= R_IA64_DTPRELNNLSB
;
2425 case R_IA64_LTOFF_DTPREL22
:
2426 need_entry
= NEED_DTPREL
;
2429 case R_IA64_DTPMOD64MSB
:
2430 case R_IA64_DTPMOD64LSB
:
2431 if (bfd_link_pic (info
) || maybe_dynamic
)
2432 need_entry
= NEED_DYNREL
;
2433 dynrel_type
= R_IA64_DTPMOD64LSB
;
2436 case R_IA64_LTOFF_DTPMOD22
:
2437 need_entry
= NEED_DTPMOD
;
2440 case R_IA64_LTOFF_FPTR22
:
2441 case R_IA64_LTOFF_FPTR64I
:
2442 case R_IA64_LTOFF_FPTR32MSB
:
2443 case R_IA64_LTOFF_FPTR32LSB
:
2444 case R_IA64_LTOFF_FPTR64MSB
:
2445 case R_IA64_LTOFF_FPTR64LSB
:
2446 need_entry
= NEED_FPTR
| NEED_GOT
| NEED_LTOFF_FPTR
;
2449 case R_IA64_FPTR64I
:
2450 case R_IA64_FPTR32MSB
:
2451 case R_IA64_FPTR32LSB
:
2452 case R_IA64_FPTR64MSB
:
2453 case R_IA64_FPTR64LSB
:
2454 if (bfd_link_pic (info
) || h
)
2455 need_entry
= NEED_FPTR
| NEED_DYNREL
;
2457 need_entry
= NEED_FPTR
;
2458 dynrel_type
= R_IA64_FPTRNNLSB
;
2461 case R_IA64_LTOFF22
:
2462 case R_IA64_LTOFF64I
:
2463 need_entry
= NEED_GOT
;
2466 case R_IA64_LTOFF22X
:
2467 need_entry
= NEED_GOTX
;
2470 case R_IA64_PLTOFF22
:
2471 case R_IA64_PLTOFF64I
:
2472 case R_IA64_PLTOFF64MSB
:
2473 case R_IA64_PLTOFF64LSB
:
2474 need_entry
= NEED_PLTOFF
;
2478 need_entry
|= NEED_MIN_PLT
;
2482 case R_IA64_PCREL21B
:
2483 case R_IA64_PCREL60B
:
2484 /* Depending on where this symbol is defined, we may or may not
2485 need a full plt entry. Only skip if we know we'll not need
2486 the entry -- static or symbolic, and the symbol definition
2487 has already been seen. */
2488 if (maybe_dynamic
&& rel
->r_addend
== 0)
2489 need_entry
= NEED_FULL_PLT
;
2495 case R_IA64_DIR32MSB
:
2496 case R_IA64_DIR32LSB
:
2497 case R_IA64_DIR64MSB
:
2498 case R_IA64_DIR64LSB
:
2499 /* Shared objects will always need at least a REL relocation. */
2500 if (bfd_link_pic (info
) || maybe_dynamic
)
2501 need_entry
= NEED_DYNREL
;
2502 dynrel_type
= R_IA64_DIRNNLSB
;
2505 case R_IA64_IPLTMSB
:
2506 case R_IA64_IPLTLSB
:
2507 /* Shared objects will always need at least a REL relocation. */
2508 if (bfd_link_pic (info
) || maybe_dynamic
)
2509 need_entry
= NEED_DYNREL
;
2510 dynrel_type
= R_IA64_IPLTLSB
;
2513 case R_IA64_PCREL22
:
2514 case R_IA64_PCREL64I
:
2515 case R_IA64_PCREL32MSB
:
2516 case R_IA64_PCREL32LSB
:
2517 case R_IA64_PCREL64MSB
:
2518 case R_IA64_PCREL64LSB
:
2520 need_entry
= NEED_DYNREL
;
2521 dynrel_type
= R_IA64_PCRELNNLSB
;
2528 dyn_i
= get_dyn_sym_info (ia64_info
, h
, abfd
, rel
, FALSE
);
2530 /* Record whether or not this is a local symbol. */
2533 /* Create what's needed. */
2534 if (need_entry
& (NEED_GOT
| NEED_GOTX
| NEED_TPREL
2535 | NEED_DTPMOD
| NEED_DTPREL
))
2539 got
= get_got (abfd
, info
, ia64_info
);
2543 if (need_entry
& NEED_GOT
)
2544 dyn_i
->want_got
= 1;
2545 if (need_entry
& NEED_GOTX
)
2546 dyn_i
->want_gotx
= 1;
2547 if (need_entry
& NEED_TPREL
)
2548 dyn_i
->want_tprel
= 1;
2549 if (need_entry
& NEED_DTPMOD
)
2550 dyn_i
->want_dtpmod
= 1;
2551 if (need_entry
& NEED_DTPREL
)
2552 dyn_i
->want_dtprel
= 1;
2554 if (need_entry
& NEED_FPTR
)
2558 fptr
= get_fptr (abfd
, info
, ia64_info
);
2563 /* FPTRs for shared libraries are allocated by the dynamic
2564 linker. Make sure this local symbol will appear in the
2565 dynamic symbol table. */
2566 if (!h
&& bfd_link_pic (info
))
2568 if (! (bfd_elf_link_record_local_dynamic_symbol
2569 (info
, abfd
, (long) r_symndx
)))
2573 dyn_i
->want_fptr
= 1;
2575 if (need_entry
& NEED_LTOFF_FPTR
)
2576 dyn_i
->want_ltoff_fptr
= 1;
2577 if (need_entry
& (NEED_MIN_PLT
| NEED_FULL_PLT
))
2579 if (!ia64_info
->root
.dynobj
)
2580 ia64_info
->root
.dynobj
= abfd
;
2582 dyn_i
->want_plt
= 1;
2584 if (need_entry
& NEED_FULL_PLT
)
2585 dyn_i
->want_plt2
= 1;
2586 if (need_entry
& NEED_PLTOFF
)
2588 /* This is needed here, in case @pltoff is used in a non-shared
2592 pltoff
= get_pltoff (abfd
, info
, ia64_info
);
2597 dyn_i
->want_pltoff
= 1;
2599 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
2603 srel
= get_reloc_section (abfd
, ia64_info
, sec
, TRUE
);
2607 if (!count_dyn_reloc (abfd
, dyn_i
, srel
, dynrel_type
,
2608 (sec
->flags
& SEC_READONLY
) != 0))
2616 /* For cleanliness, and potentially faster dynamic loading, allocate
2617 external GOT entries first. */
2620 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2623 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2625 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2626 && ! dyn_i
->want_fptr
2627 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2629 dyn_i
->got_offset
= x
->ofs
;
2632 if (dyn_i
->want_tprel
)
2634 dyn_i
->tprel_offset
= x
->ofs
;
2637 if (dyn_i
->want_dtpmod
)
2639 if (elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2641 dyn_i
->dtpmod_offset
= x
->ofs
;
2646 struct elfNN_ia64_link_hash_table
*ia64_info
;
2648 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2649 if (ia64_info
== NULL
)
2652 if (ia64_info
->self_dtpmod_offset
== (bfd_vma
) -1)
2654 ia64_info
->self_dtpmod_offset
= x
->ofs
;
2657 dyn_i
->dtpmod_offset
= ia64_info
->self_dtpmod_offset
;
2660 if (dyn_i
->want_dtprel
)
2662 dyn_i
->dtprel_offset
= x
->ofs
;
2668 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2671 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2674 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2678 && elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, R_IA64_FPTRNNLSB
))
2680 dyn_i
->got_offset
= x
->ofs
;
2686 /* Lastly, allocate all the GOT entries for local data. */
2689 allocate_local_got (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2692 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2694 if ((dyn_i
->want_got
|| dyn_i
->want_gotx
)
2695 && !elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0))
2697 dyn_i
->got_offset
= x
->ofs
;
2703 /* Search for the index of a global symbol in it's defining object file. */
2706 global_sym_index (struct elf_link_hash_entry
*h
)
2708 struct elf_link_hash_entry
**p
;
2711 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2712 || h
->root
.type
== bfd_link_hash_defweak
);
2714 obj
= h
->root
.u
.def
.section
->owner
;
2715 for (p
= elf_sym_hashes (obj
); *p
!= h
; ++p
)
2718 return p
- elf_sym_hashes (obj
) + elf_tdata (obj
)->symtab_hdr
.sh_info
;
2721 /* Allocate function descriptors. We can do these for every function
2722 in a main executable that is not exported. */
2725 allocate_fptr (struct elfNN_ia64_dyn_sym_info
*dyn_i
, void * data
)
2727 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2729 if (dyn_i
->want_fptr
)
2731 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2734 while (h
->root
.type
== bfd_link_hash_indirect
2735 || h
->root
.type
== bfd_link_hash_warning
)
2736 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2738 if (!bfd_link_executable (x
->info
)
2740 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2741 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x
->info
, h
))
2742 || (h
->root
.type
!= bfd_link_hash_undefweak
2743 && h
->root
.type
!= bfd_link_hash_undefined
)))
2745 if (h
&& h
->dynindx
== -1)
2747 BFD_ASSERT ((h
->root
.type
== bfd_link_hash_defined
)
2748 || (h
->root
.type
== bfd_link_hash_defweak
));
2750 if (!bfd_elf_link_record_local_dynamic_symbol
2751 (x
->info
, h
->root
.u
.def
.section
->owner
,
2752 global_sym_index (h
)))
2756 dyn_i
->want_fptr
= 0;
2758 else if (h
== NULL
|| h
->dynindx
== -1)
2760 dyn_i
->fptr_offset
= x
->ofs
;
2764 dyn_i
->want_fptr
= 0;
2769 /* Allocate all the minimal PLT entries. */
2772 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2775 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2777 if (dyn_i
->want_plt
)
2779 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2782 while (h
->root
.type
== bfd_link_hash_indirect
2783 || h
->root
.type
== bfd_link_hash_warning
)
2784 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2786 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2787 if (elfNN_ia64_dynamic_symbol_p (h
, x
->info
, 0))
2789 bfd_size_type offset
= x
->ofs
;
2791 offset
= PLT_HEADER_SIZE
;
2792 dyn_i
->plt_offset
= offset
;
2793 x
->ofs
= offset
+ PLT_MIN_ENTRY_SIZE
;
2795 dyn_i
->want_pltoff
= 1;
2799 dyn_i
->want_plt
= 0;
2800 dyn_i
->want_plt2
= 0;
2806 /* Allocate all the full PLT entries. */
2809 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2812 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2814 if (dyn_i
->want_plt2
)
2816 struct elf_link_hash_entry
*h
= dyn_i
->h
;
2817 bfd_size_type ofs
= x
->ofs
;
2819 dyn_i
->plt2_offset
= ofs
;
2820 x
->ofs
= ofs
+ PLT_FULL_ENTRY_SIZE
;
2822 while (h
->root
.type
== bfd_link_hash_indirect
2823 || h
->root
.type
== bfd_link_hash_warning
)
2824 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2825 dyn_i
->h
->plt
.offset
= ofs
;
2830 /* Allocate all the PLTOFF entries requested by relocations and
2831 plt entries. We can't share space with allocated FPTR entries,
2832 because the latter are not necessarily addressable by the GP.
2833 ??? Relaxation might be able to determine that they are. */
2836 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2839 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2841 if (dyn_i
->want_pltoff
)
2843 dyn_i
->pltoff_offset
= x
->ofs
;
2849 /* Allocate dynamic relocations for those symbols that turned out
2853 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info
*dyn_i
,
2856 struct elfNN_ia64_allocate_data
*x
= (struct elfNN_ia64_allocate_data
*)data
;
2857 struct elfNN_ia64_link_hash_table
*ia64_info
;
2858 struct elfNN_ia64_dyn_reloc_entry
*rent
;
2859 bfd_boolean dynamic_symbol
, shared
, resolved_zero
;
2861 ia64_info
= elfNN_ia64_hash_table (x
->info
);
2862 if (ia64_info
== NULL
)
2865 /* Note that this can't be used in relation to FPTR relocs below. */
2866 dynamic_symbol
= elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, x
->info
, 0);
2868 shared
= bfd_link_pic (x
->info
);
2869 resolved_zero
= (dyn_i
->h
2870 && UNDEFWEAK_NO_DYNAMIC_RELOC (x
->info
,
2873 /* Take care of the GOT and PLT relocations. */
2876 && (dynamic_symbol
|| shared
)
2877 && (dyn_i
->want_got
|| dyn_i
->want_gotx
))
2878 || (dyn_i
->want_ltoff_fptr
2880 && dyn_i
->h
->dynindx
!= -1))
2882 if (!dyn_i
->want_ltoff_fptr
2883 || !bfd_link_pie (x
->info
)
2885 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2886 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2888 if ((dynamic_symbol
|| shared
) && dyn_i
->want_tprel
)
2889 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2890 if (dynamic_symbol
&& dyn_i
->want_dtpmod
)
2891 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2892 if (dynamic_symbol
&& dyn_i
->want_dtprel
)
2893 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
2898 if (ia64_info
->rel_fptr_sec
&& dyn_i
->want_fptr
)
2900 if (dyn_i
->h
== NULL
|| dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
2901 ia64_info
->rel_fptr_sec
->size
+= sizeof (ElfNN_External_Rela
);
2904 if (!resolved_zero
&& dyn_i
->want_pltoff
)
2906 bfd_size_type t
= 0;
2908 /* Dynamic symbols get one IPLT relocation. Local symbols in
2909 shared libraries get two REL relocations. Local symbols in
2910 main applications get nothing. */
2912 t
= sizeof (ElfNN_External_Rela
);
2914 t
= 2 * sizeof (ElfNN_External_Rela
);
2916 ia64_info
->rel_pltoff_sec
->size
+= t
;
2919 /* Take care of the normal data relocations. */
2921 for (rent
= dyn_i
->reloc_entries
; rent
; rent
= rent
->next
)
2923 int count
= rent
->count
;
2927 case R_IA64_FPTR32LSB
:
2928 case R_IA64_FPTR64LSB
:
2929 /* Allocate one iff !want_fptr and not PIE, which by this point
2930 will be true only if we're actually allocating one statically
2931 in the main executable. Position independent executables
2932 need a relative reloc. */
2933 if (dyn_i
->want_fptr
&& !bfd_link_pie (x
->info
))
2936 case R_IA64_PCREL32LSB
:
2937 case R_IA64_PCREL64LSB
:
2938 if (!dynamic_symbol
)
2941 case R_IA64_DIR32LSB
:
2942 case R_IA64_DIR64LSB
:
2943 if (!dynamic_symbol
&& !shared
)
2946 case R_IA64_IPLTLSB
:
2947 if (!dynamic_symbol
&& !shared
)
2949 /* Use two REL relocations for IPLT relocations
2950 against local symbols. */
2951 if (!dynamic_symbol
)
2954 case R_IA64_DTPREL32LSB
:
2955 case R_IA64_TPREL64LSB
:
2956 case R_IA64_DTPREL64LSB
:
2957 case R_IA64_DTPMOD64LSB
:
2963 ia64_info
->reltext
= 1;
2964 rent
->srel
->size
+= sizeof (ElfNN_External_Rela
) * count
;
2971 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2972 struct elf_link_hash_entry
*h
)
2974 /* ??? Undefined symbols with PLT entries should be re-defined
2975 to be the PLT entry. */
2977 /* If this is a weak symbol, and there is a real definition, the
2978 processor independent code will have arranged for us to see the
2979 real definition first, and we can just use the same value. */
2980 if (h
->is_weakalias
)
2982 struct elf_link_hash_entry
*def
= weakdef (h
);
2983 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2984 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2985 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2989 /* If this is a reference to a symbol defined by a dynamic object which
2990 is not a function, we might allocate the symbol in our .dynbss section
2991 and allocate a COPY dynamic relocation.
2993 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
3000 elfNN_ia64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3001 struct bfd_link_info
*info
)
3003 struct elfNN_ia64_allocate_data data
;
3004 struct elfNN_ia64_link_hash_table
*ia64_info
;
3007 bfd_boolean relplt
= FALSE
;
3009 ia64_info
= elfNN_ia64_hash_table (info
);
3010 if (ia64_info
== NULL
)
3012 dynobj
= ia64_info
->root
.dynobj
;
3013 ia64_info
->self_dtpmod_offset
= (bfd_vma
) -1;
3014 BFD_ASSERT(dynobj
!= NULL
);
3017 /* Set the contents of the .interp section to the interpreter. */
3018 if (ia64_info
->root
.dynamic_sections_created
3019 && bfd_link_executable (info
) && !info
->nointerp
)
3021 sec
= bfd_get_linker_section (dynobj
, ".interp");
3022 BFD_ASSERT (sec
!= NULL
);
3023 sec
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
3024 sec
->size
= strlen (ELF_DYNAMIC_INTERPRETER
) + 1;
3027 /* Allocate the GOT entries. */
3029 if (ia64_info
->root
.sgot
)
3032 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_data_got
, &data
);
3033 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_global_fptr_got
, &data
);
3034 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_local_got
, &data
);
3035 ia64_info
->root
.sgot
->size
= data
.ofs
;
3038 /* Allocate the FPTR entries. */
3040 if (ia64_info
->fptr_sec
)
3043 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_fptr
, &data
);
3044 ia64_info
->fptr_sec
->size
= data
.ofs
;
3047 /* Now that we've seen all of the input files, we can decide which
3048 symbols need plt entries. Allocate the minimal PLT entries first.
3049 We do this even though dynamic_sections_created may be FALSE, because
3050 this has the side-effect of clearing want_plt and want_plt2. */
3053 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt_entries
, &data
);
3055 ia64_info
->minplt_entries
= 0;
3058 ia64_info
->minplt_entries
3059 = (data
.ofs
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
3062 /* Align the pointer for the plt2 entries. */
3063 data
.ofs
= (data
.ofs
+ 31) & (bfd_vma
) -32;
3065 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_plt2_entries
, &data
);
3066 if (data
.ofs
!= 0 || ia64_info
->root
.dynamic_sections_created
)
3068 /* FIXME: we always reserve the memory for dynamic linker even if
3069 there are no PLT entries since dynamic linker may assume the
3070 reserved memory always exists. */
3072 BFD_ASSERT (ia64_info
->root
.dynamic_sections_created
);
3074 ia64_info
->root
.splt
->size
= data
.ofs
;
3076 /* If we've got a .plt, we need some extra memory for the dynamic
3077 linker. We stuff these in .got.plt. */
3078 ia64_info
->root
.sgotplt
->size
= 8 * PLT_RESERVED_WORDS
;
3081 /* Allocate the PLTOFF entries. */
3083 if (ia64_info
->pltoff_sec
)
3086 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_pltoff_entries
, &data
);
3087 ia64_info
->pltoff_sec
->size
= data
.ofs
;
3090 if (ia64_info
->root
.dynamic_sections_created
)
3092 /* Allocate space for the dynamic relocations that turned out to be
3095 if (bfd_link_pic (info
) && ia64_info
->self_dtpmod_offset
!= (bfd_vma
) -1)
3096 ia64_info
->root
.srelgot
->size
+= sizeof (ElfNN_External_Rela
);
3097 data
.only_got
= FALSE
;
3098 elfNN_ia64_dyn_sym_traverse (ia64_info
, allocate_dynrel_entries
, &data
);
3101 /* We have now determined the sizes of the various dynamic sections.
3102 Allocate memory for them. */
3103 for (sec
= dynobj
->sections
; sec
!= NULL
; sec
= sec
->next
)
3107 if (!(sec
->flags
& SEC_LINKER_CREATED
))
3110 /* If we don't need this section, strip it from the output file.
3111 There were several sections primarily related to dynamic
3112 linking that must be create before the linker maps input
3113 sections to output sections. The linker does that before
3114 bfd_elf_size_dynamic_sections is called, and it is that
3115 function which decides whether anything needs to go into
3118 strip
= (sec
->size
== 0);
3120 if (sec
== ia64_info
->root
.sgot
)
3122 else if (sec
== ia64_info
->root
.srelgot
)
3125 ia64_info
->root
.srelgot
= NULL
;
3127 /* We use the reloc_count field as a counter if we need to
3128 copy relocs into the output file. */
3129 sec
->reloc_count
= 0;
3131 else if (sec
== ia64_info
->fptr_sec
)
3134 ia64_info
->fptr_sec
= NULL
;
3136 else if (sec
== ia64_info
->rel_fptr_sec
)
3139 ia64_info
->rel_fptr_sec
= NULL
;
3141 /* We use the reloc_count field as a counter if we need to
3142 copy relocs into the output file. */
3143 sec
->reloc_count
= 0;
3145 else if (sec
== ia64_info
->root
.splt
)
3148 ia64_info
->root
.splt
= NULL
;
3150 else if (sec
== ia64_info
->pltoff_sec
)
3153 ia64_info
->pltoff_sec
= NULL
;
3155 else if (sec
== ia64_info
->rel_pltoff_sec
)
3158 ia64_info
->rel_pltoff_sec
= NULL
;
3162 /* We use the reloc_count field as a counter if we need to
3163 copy relocs into the output file. */
3164 sec
->reloc_count
= 0;
3171 /* It's OK to base decisions on the section name, because none
3172 of the dynobj section names depend upon the input files. */
3173 name
= bfd_section_name (sec
);
3175 if (strcmp (name
, ".got.plt") == 0)
3177 else if (CONST_STRNEQ (name
, ".rel"))
3181 /* We use the reloc_count field as a counter if we need to
3182 copy relocs into the output file. */
3183 sec
->reloc_count
= 0;
3191 sec
->flags
|= SEC_EXCLUDE
;
3194 /* Allocate memory for the section contents. */
3195 sec
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, sec
->size
);
3196 if (sec
->contents
== NULL
&& sec
->size
!= 0)
3201 if (ia64_info
->root
.dynamic_sections_created
)
3203 /* Add some entries to the .dynamic section. We fill in the values
3204 later (in finish_dynamic_sections) but we must add the entries now
3205 so that we get the correct size for the .dynamic section. */
3207 if (bfd_link_executable (info
))
3209 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3211 #define add_dynamic_entry(TAG, VAL) \
3212 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3214 if (!add_dynamic_entry (DT_DEBUG
, 0))
3218 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE
, 0))
3220 if (!add_dynamic_entry (DT_PLTGOT
, 0))
3225 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
3226 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3227 || !add_dynamic_entry (DT_JMPREL
, 0))
3231 if (!add_dynamic_entry (DT_RELA
, 0)
3232 || !add_dynamic_entry (DT_RELASZ
, 0)
3233 || !add_dynamic_entry (DT_RELAENT
, sizeof (ElfNN_External_Rela
)))
3236 if (ia64_info
->reltext
)
3238 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3240 info
->flags
|= DF_TEXTREL
;
3244 /* ??? Perhaps force __gp local. */
3250 elfNN_ia64_install_dyn_reloc (bfd
*abfd
, struct bfd_link_info
*info
,
3251 asection
*sec
, asection
*srel
,
3252 bfd_vma offset
, unsigned int type
,
3253 long dynindx
, bfd_vma addend
)
3255 Elf_Internal_Rela outrel
;
3258 BFD_ASSERT (dynindx
!= -1);
3259 outrel
.r_info
= ELFNN_R_INFO (dynindx
, type
);
3260 outrel
.r_addend
= addend
;
3261 outrel
.r_offset
= _bfd_elf_section_offset (abfd
, info
, sec
, offset
);
3262 if (outrel
.r_offset
>= (bfd_vma
) -2)
3264 /* Run for the hills. We shouldn't be outputting a relocation
3265 for this. So do what everyone else does and output a no-op. */
3266 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_NONE
);
3267 outrel
.r_addend
= 0;
3268 outrel
.r_offset
= 0;
3271 outrel
.r_offset
+= sec
->output_section
->vma
+ sec
->output_offset
;
3273 loc
= srel
->contents
;
3274 loc
+= srel
->reloc_count
++ * sizeof (ElfNN_External_Rela
);
3275 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3276 BFD_ASSERT (sizeof (ElfNN_External_Rela
) * srel
->reloc_count
<= srel
->size
);
3279 /* Store an entry for target address TARGET_ADDR in the linkage table
3280 and return the gp-relative address of the linkage table entry. */
3283 set_got_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3284 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3285 long dynindx
, bfd_vma addend
, bfd_vma value
,
3286 unsigned int dyn_r_type
)
3288 struct elfNN_ia64_link_hash_table
*ia64_info
;
3293 ia64_info
= elfNN_ia64_hash_table (info
);
3294 if (ia64_info
== NULL
)
3297 got_sec
= ia64_info
->root
.sgot
;
3301 case R_IA64_TPREL64LSB
:
3302 done
= dyn_i
->tprel_done
;
3303 dyn_i
->tprel_done
= TRUE
;
3304 got_offset
= dyn_i
->tprel_offset
;
3306 case R_IA64_DTPMOD64LSB
:
3307 if (dyn_i
->dtpmod_offset
!= ia64_info
->self_dtpmod_offset
)
3309 done
= dyn_i
->dtpmod_done
;
3310 dyn_i
->dtpmod_done
= TRUE
;
3314 done
= ia64_info
->self_dtpmod_done
;
3315 ia64_info
->self_dtpmod_done
= TRUE
;
3318 got_offset
= dyn_i
->dtpmod_offset
;
3320 case R_IA64_DTPREL32LSB
:
3321 case R_IA64_DTPREL64LSB
:
3322 done
= dyn_i
->dtprel_done
;
3323 dyn_i
->dtprel_done
= TRUE
;
3324 got_offset
= dyn_i
->dtprel_offset
;
3327 done
= dyn_i
->got_done
;
3328 dyn_i
->got_done
= TRUE
;
3329 got_offset
= dyn_i
->got_offset
;
3333 BFD_ASSERT ((got_offset
& 7) == 0);
3337 /* Store the target address in the linkage table entry. */
3338 bfd_put_64 (abfd
, value
, got_sec
->contents
+ got_offset
);
3340 /* Install a dynamic relocation if needed. */
3341 if (((bfd_link_pic (info
)
3343 || (ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3344 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, dyn_i
->h
))
3345 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
)
3346 && dyn_r_type
!= R_IA64_DTPREL32LSB
3347 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3348 || elfNN_ia64_dynamic_symbol_p (dyn_i
->h
, info
, dyn_r_type
)
3350 && (dyn_r_type
== R_IA64_FPTR32LSB
3351 || dyn_r_type
== R_IA64_FPTR64LSB
)))
3352 && (!dyn_i
->want_ltoff_fptr
3353 || !bfd_link_pie (info
)
3355 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3358 && dyn_r_type
!= R_IA64_TPREL64LSB
3359 && dyn_r_type
!= R_IA64_DTPMOD64LSB
3360 && dyn_r_type
!= R_IA64_DTPREL32LSB
3361 && dyn_r_type
!= R_IA64_DTPREL64LSB
)
3363 dyn_r_type
= R_IA64_RELNNLSB
;
3368 if (bfd_big_endian (abfd
))
3372 case R_IA64_REL32LSB
:
3373 dyn_r_type
= R_IA64_REL32MSB
;
3375 case R_IA64_DIR32LSB
:
3376 dyn_r_type
= R_IA64_DIR32MSB
;
3378 case R_IA64_FPTR32LSB
:
3379 dyn_r_type
= R_IA64_FPTR32MSB
;
3381 case R_IA64_DTPREL32LSB
:
3382 dyn_r_type
= R_IA64_DTPREL32MSB
;
3384 case R_IA64_REL64LSB
:
3385 dyn_r_type
= R_IA64_REL64MSB
;
3387 case R_IA64_DIR64LSB
:
3388 dyn_r_type
= R_IA64_DIR64MSB
;
3390 case R_IA64_FPTR64LSB
:
3391 dyn_r_type
= R_IA64_FPTR64MSB
;
3393 case R_IA64_TPREL64LSB
:
3394 dyn_r_type
= R_IA64_TPREL64MSB
;
3396 case R_IA64_DTPMOD64LSB
:
3397 dyn_r_type
= R_IA64_DTPMOD64MSB
;
3399 case R_IA64_DTPREL64LSB
:
3400 dyn_r_type
= R_IA64_DTPREL64MSB
;
3408 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, got_sec
,
3409 ia64_info
->root
.srelgot
,
3410 got_offset
, dyn_r_type
,
3415 /* Return the address of the linkage table entry. */
3416 value
= (got_sec
->output_section
->vma
3417 + got_sec
->output_offset
3423 /* Fill in a function descriptor consisting of the function's code
3424 address and its global pointer. Return the descriptor's address. */
3427 set_fptr_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3428 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3431 struct elfNN_ia64_link_hash_table
*ia64_info
;
3434 ia64_info
= elfNN_ia64_hash_table (info
);
3435 if (ia64_info
== NULL
)
3438 fptr_sec
= ia64_info
->fptr_sec
;
3440 if (!dyn_i
->fptr_done
)
3442 dyn_i
->fptr_done
= 1;
3444 /* Fill in the function descriptor. */
3445 bfd_put_64 (abfd
, value
, fptr_sec
->contents
+ dyn_i
->fptr_offset
);
3446 bfd_put_64 (abfd
, _bfd_get_gp_value (abfd
),
3447 fptr_sec
->contents
+ dyn_i
->fptr_offset
+ 8);
3448 if (ia64_info
->rel_fptr_sec
)
3450 Elf_Internal_Rela outrel
;
3453 if (bfd_little_endian (abfd
))
3454 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTLSB
);
3456 outrel
.r_info
= ELFNN_R_INFO (0, R_IA64_IPLTMSB
);
3457 outrel
.r_addend
= value
;
3458 outrel
.r_offset
= (fptr_sec
->output_section
->vma
3459 + fptr_sec
->output_offset
3460 + dyn_i
->fptr_offset
);
3461 loc
= ia64_info
->rel_fptr_sec
->contents
;
3462 loc
+= ia64_info
->rel_fptr_sec
->reloc_count
++
3463 * sizeof (ElfNN_External_Rela
);
3464 bfd_elfNN_swap_reloca_out (abfd
, &outrel
, loc
);
3468 /* Return the descriptor's address. */
3469 value
= (fptr_sec
->output_section
->vma
3470 + fptr_sec
->output_offset
3471 + dyn_i
->fptr_offset
);
3476 /* Fill in a PLTOFF entry consisting of the function's code address
3477 and its global pointer. Return the descriptor's address. */
3480 set_pltoff_entry (bfd
*abfd
, struct bfd_link_info
*info
,
3481 struct elfNN_ia64_dyn_sym_info
*dyn_i
,
3482 bfd_vma value
, bfd_boolean is_plt
)
3484 struct elfNN_ia64_link_hash_table
*ia64_info
;
3485 asection
*pltoff_sec
;
3487 ia64_info
= elfNN_ia64_hash_table (info
);
3488 if (ia64_info
== NULL
)
3491 pltoff_sec
= ia64_info
->pltoff_sec
;
3493 /* Don't do anything if this symbol uses a real PLT entry. In
3494 that case, we'll fill this in during finish_dynamic_symbol. */
3495 if ((! dyn_i
->want_plt
|| is_plt
)
3496 && !dyn_i
->pltoff_done
)
3498 bfd_vma gp
= _bfd_get_gp_value (abfd
);
3500 /* Fill in the function descriptor. */
3501 bfd_put_64 (abfd
, value
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
);
3502 bfd_put_64 (abfd
, gp
, pltoff_sec
->contents
+ dyn_i
->pltoff_offset
+ 8);
3504 /* Install dynamic relocations if needed. */
3506 && bfd_link_pic (info
)
3508 || (ELF_ST_VISIBILITY (dyn_i
->h
->other
) == STV_DEFAULT
3509 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, dyn_i
->h
))
3510 || dyn_i
->h
->root
.type
!= bfd_link_hash_undefweak
))
3512 unsigned int dyn_r_type
;
3514 if (bfd_big_endian (abfd
))
3515 dyn_r_type
= R_IA64_RELNNMSB
;
3517 dyn_r_type
= R_IA64_RELNNLSB
;
3519 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3520 ia64_info
->rel_pltoff_sec
,
3521 dyn_i
->pltoff_offset
,
3522 dyn_r_type
, 0, value
);
3523 elfNN_ia64_install_dyn_reloc (abfd
, NULL
, pltoff_sec
,
3524 ia64_info
->rel_pltoff_sec
,
3525 dyn_i
->pltoff_offset
+ ARCH_SIZE
/ 8,
3529 dyn_i
->pltoff_done
= 1;
3532 /* Return the descriptor's address. */
3533 value
= (pltoff_sec
->output_section
->vma
3534 + pltoff_sec
->output_offset
3535 + dyn_i
->pltoff_offset
);
3540 /* Return the base VMA address which should be subtracted from real addresses
3541 when resolving @tprel() relocation.
3542 Main program TLS (whose template starts at PT_TLS p_vaddr)
3543 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3546 elfNN_ia64_tprel_base (struct bfd_link_info
*info
)
3548 asection
*tls_sec
= elf_hash_table (info
)->tls_sec
;
3549 return tls_sec
->vma
- align_power ((bfd_vma
) ARCH_SIZE
/ 4,
3550 tls_sec
->alignment_power
);
3553 /* Return the base VMA address which should be subtracted from real addresses
3554 when resolving @dtprel() relocation.
3555 This is PT_TLS segment p_vaddr. */
3558 elfNN_ia64_dtprel_base (struct bfd_link_info
*info
)
3560 return elf_hash_table (info
)->tls_sec
->vma
;
3563 /* Called through qsort to sort the .IA_64.unwind section during a
3564 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3565 to the output bfd so we can do proper endianness frobbing. */
3567 static bfd
*elfNN_ia64_unwind_entry_compare_bfd
;
3570 elfNN_ia64_unwind_entry_compare (const void * a
, const void * b
)
3574 av
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, a
);
3575 bv
= bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd
, b
);
3577 return (av
< bv
? -1 : av
> bv
? 1 : 0);
3580 /* Make sure we've got ourselves a nice fat __gp value. */
3582 elfNN_ia64_choose_gp (bfd
*abfd
, struct bfd_link_info
*info
, bfd_boolean final
)
3584 bfd_vma min_vma
= (bfd_vma
) -1, max_vma
= 0;
3585 bfd_vma min_short_vma
= min_vma
, max_short_vma
= 0;
3586 struct elf_link_hash_entry
*gp
;
3589 struct elfNN_ia64_link_hash_table
*ia64_info
;
3591 ia64_info
= elfNN_ia64_hash_table (info
);
3592 if (ia64_info
== NULL
)
3595 /* Find the min and max vma of all sections marked short. Also collect
3596 min and max vma of any type, for use in selecting a nice gp. */
3597 for (os
= abfd
->sections
; os
; os
= os
->next
)
3601 if ((os
->flags
& SEC_ALLOC
) == 0)
3605 /* When this function is called from elfNN_ia64_final_link
3606 the correct value to use is os->size. When called from
3607 elfNN_ia64_relax_section we are in the middle of section
3608 sizing; some sections will already have os->size set, others
3609 will have os->size zero and os->rawsize the previous size. */
3610 hi
= os
->vma
+ (!final
&& os
->rawsize
? os
->rawsize
: os
->size
);
3618 if (os
->flags
& SEC_SMALL_DATA
)
3620 if (min_short_vma
> lo
)
3622 if (max_short_vma
< hi
)
3627 if (ia64_info
->min_short_sec
)
3630 > (ia64_info
->min_short_sec
->vma
3631 + ia64_info
->min_short_offset
))
3632 min_short_vma
= (ia64_info
->min_short_sec
->vma
3633 + ia64_info
->min_short_offset
);
3635 < (ia64_info
->max_short_sec
->vma
3636 + ia64_info
->max_short_offset
))
3637 max_short_vma
= (ia64_info
->max_short_sec
->vma
3638 + ia64_info
->max_short_offset
);
3641 /* See if the user wants to force a value. */
3642 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3646 && (gp
->root
.type
== bfd_link_hash_defined
3647 || gp
->root
.type
== bfd_link_hash_defweak
))
3649 asection
*gp_sec
= gp
->root
.u
.def
.section
;
3650 gp_val
= (gp
->root
.u
.def
.value
3651 + gp_sec
->output_section
->vma
3652 + gp_sec
->output_offset
);
3656 /* Pick a sensible value. */
3658 if (ia64_info
->min_short_sec
)
3660 bfd_vma short_range
= max_short_vma
- min_short_vma
;
3662 /* If min_short_sec is set, pick one in the middle bewteen
3663 min_short_vma and max_short_vma. */
3664 if (short_range
>= 0x400000)
3666 gp_val
= min_short_vma
+ short_range
/ 2;
3670 asection
*got_sec
= ia64_info
->root
.sgot
;
3672 /* Start with just the address of the .got. */
3674 gp_val
= got_sec
->output_section
->vma
;
3675 else if (max_short_vma
!= 0)
3676 gp_val
= min_short_vma
;
3677 else if (max_vma
- min_vma
< 0x200000)
3680 gp_val
= max_vma
- 0x200000 + 8;
3683 /* If it is possible to address the entire image, but we
3684 don't with the choice above, adjust. */
3685 if (max_vma
- min_vma
< 0x400000
3686 && (max_vma
- gp_val
>= 0x200000
3687 || gp_val
- min_vma
> 0x200000))
3688 gp_val
= min_vma
+ 0x200000;
3689 else if (max_short_vma
!= 0)
3691 /* If we don't cover all the short data, adjust. */
3692 if (max_short_vma
- gp_val
>= 0x200000)
3693 gp_val
= min_short_vma
+ 0x200000;
3695 /* If we're addressing stuff past the end, adjust back. */
3696 if (gp_val
> max_vma
)
3697 gp_val
= max_vma
- 0x200000 + 8;
3701 /* Validate whether all SHF_IA_64_SHORT sections are within
3702 range of the chosen GP. */
3704 if (max_short_vma
!= 0)
3706 if (max_short_vma
- min_short_vma
>= 0x400000)
3710 /* xgettext:c-format */
3711 (_("%pB: short data segment overflowed (%#" PRIx64
" >= 0x400000)"),
3712 abfd
, (uint64_t) (max_short_vma
- min_short_vma
));
3715 else if ((gp_val
> min_short_vma
3716 && gp_val
- min_short_vma
> 0x200000)
3717 || (gp_val
< max_short_vma
3718 && max_short_vma
- gp_val
>= 0x200000))
3721 (_("%pB: __gp does not cover short data segment"), abfd
);
3726 _bfd_set_gp_value (abfd
, gp_val
);
3732 elfNN_ia64_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3734 struct elfNN_ia64_link_hash_table
*ia64_info
;
3735 asection
*unwind_output_sec
;
3737 ia64_info
= elfNN_ia64_hash_table (info
);
3738 if (ia64_info
== NULL
)
3741 /* Make sure we've got ourselves a nice fat __gp value. */
3742 if (!bfd_link_relocatable (info
))
3745 struct elf_link_hash_entry
*gp
;
3747 /* We assume after gp is set, section size will only decrease. We
3748 need to adjust gp for it. */
3749 _bfd_set_gp_value (abfd
, 0);
3750 if (! elfNN_ia64_choose_gp (abfd
, info
, TRUE
))
3752 gp_val
= _bfd_get_gp_value (abfd
);
3754 gp
= elf_link_hash_lookup (elf_hash_table (info
), "__gp", FALSE
,
3758 gp
->root
.type
= bfd_link_hash_defined
;
3759 gp
->root
.u
.def
.value
= gp_val
;
3760 gp
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3764 /* If we're producing a final executable, we need to sort the contents
3765 of the .IA_64.unwind section. Force this section to be relocated
3766 into memory rather than written immediately to the output file. */
3767 unwind_output_sec
= NULL
;
3768 if (!bfd_link_relocatable (info
))
3770 asection
*s
= bfd_get_section_by_name (abfd
, ELF_STRING_ia64_unwind
);
3773 unwind_output_sec
= s
->output_section
;
3774 unwind_output_sec
->contents
3775 = bfd_malloc (unwind_output_sec
->size
);
3776 if (unwind_output_sec
->contents
== NULL
)
3781 /* Invoke the regular ELF backend linker to do all the work. */
3782 if (!bfd_elf_final_link (abfd
, info
))
3785 if (unwind_output_sec
)
3787 elfNN_ia64_unwind_entry_compare_bfd
= abfd
;
3788 qsort (unwind_output_sec
->contents
,
3789 (size_t) (unwind_output_sec
->size
/ 24),
3791 elfNN_ia64_unwind_entry_compare
);
3793 if (! bfd_set_section_contents (abfd
, unwind_output_sec
,
3794 unwind_output_sec
->contents
, (bfd_vma
) 0,
3795 unwind_output_sec
->size
))
3803 elfNN_ia64_relocate_section (bfd
*output_bfd
,
3804 struct bfd_link_info
*info
,
3806 asection
*input_section
,
3808 Elf_Internal_Rela
*relocs
,
3809 Elf_Internal_Sym
*local_syms
,
3810 asection
**local_sections
)
3812 struct elfNN_ia64_link_hash_table
*ia64_info
;
3813 Elf_Internal_Shdr
*symtab_hdr
;
3814 Elf_Internal_Rela
*rel
;
3815 Elf_Internal_Rela
*relend
;
3817 bfd_boolean ret_val
= TRUE
; /* for non-fatal errors */
3820 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3821 ia64_info
= elfNN_ia64_hash_table (info
);
3822 if (ia64_info
== NULL
)
3825 /* Infect various flags from the input section to the output section. */
3826 if (bfd_link_relocatable (info
))
3830 flags
= elf_section_data(input_section
)->this_hdr
.sh_flags
;
3831 flags
&= SHF_IA_64_NORECOV
;
3833 elf_section_data(input_section
->output_section
)
3834 ->this_hdr
.sh_flags
|= flags
;
3837 gp_val
= _bfd_get_gp_value (output_bfd
);
3838 srel
= get_reloc_section (input_bfd
, ia64_info
, input_section
, FALSE
);
3841 relend
= relocs
+ input_section
->reloc_count
;
3842 for (; rel
< relend
; ++rel
)
3844 struct elf_link_hash_entry
*h
;
3845 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
3846 bfd_reloc_status_type r
;
3847 reloc_howto_type
*howto
;
3848 unsigned long r_symndx
;
3849 Elf_Internal_Sym
*sym
;
3850 unsigned int r_type
;
3854 bfd_boolean dynamic_symbol_p
;
3855 bfd_boolean undef_weak_ref
;
3857 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3858 if (r_type
> R_IA64_MAX_RELOC_CODE
)
3860 /* xgettext:c-format */
3861 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3862 input_bfd
, (int) r_type
);
3863 bfd_set_error (bfd_error_bad_value
);
3868 howto
= ia64_elf_lookup_howto (r_type
);
3875 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
3879 undef_weak_ref
= FALSE
;
3881 if (r_symndx
< symtab_hdr
->sh_info
)
3883 /* Reloc against local symbol. */
3885 sym
= local_syms
+ r_symndx
;
3886 sym_sec
= local_sections
[r_symndx
];
3888 value
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &msec
, rel
);
3889 if (!bfd_link_relocatable (info
)
3890 && (sym_sec
->flags
& SEC_MERGE
) != 0
3891 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
3892 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3894 struct elfNN_ia64_local_hash_entry
*loc_h
;
3896 loc_h
= get_local_sym_hash (ia64_info
, input_bfd
, rel
, FALSE
);
3897 if (loc_h
&& ! loc_h
->sec_merge_done
)
3899 struct elfNN_ia64_dyn_sym_info
*dynent
;
3902 for (count
= loc_h
->count
, dynent
= loc_h
->info
;
3908 _bfd_merged_section_offset (output_bfd
, &msec
,
3909 elf_section_data (msec
)->
3913 dynent
->addend
-= sym
->st_value
;
3914 dynent
->addend
+= msec
->output_section
->vma
3915 + msec
->output_offset
3916 - sym_sec
->output_section
->vma
3917 - sym_sec
->output_offset
;
3920 /* We may have introduced duplicated entries. We need
3921 to remove them properly. */
3922 count
= sort_dyn_sym_info (loc_h
->info
, loc_h
->count
);
3923 if (count
!= loc_h
->count
)
3925 loc_h
->count
= count
;
3926 loc_h
->sorted_count
= count
;
3929 loc_h
->sec_merge_done
= 1;
3935 bfd_boolean unresolved_reloc
;
3936 bfd_boolean warned
, ignored
;
3937 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
3939 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
3940 r_symndx
, symtab_hdr
, sym_hashes
,
3942 unresolved_reloc
, warned
, ignored
);
3944 if (h
->root
.type
== bfd_link_hash_undefweak
)
3945 undef_weak_ref
= TRUE
;
3946 else if (warned
|| (ignored
&& bfd_link_executable (info
)))
3950 if (sym_sec
!= NULL
&& discarded_section (sym_sec
))
3951 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3952 rel
, 1, relend
, howto
, 0, contents
);
3954 if (bfd_link_relocatable (info
))
3957 hit_addr
= contents
+ rel
->r_offset
;
3958 value
+= rel
->r_addend
;
3959 dynamic_symbol_p
= elfNN_ia64_dynamic_symbol_p (h
, info
, r_type
);
3970 case R_IA64_DIR32MSB
:
3971 case R_IA64_DIR32LSB
:
3972 case R_IA64_DIR64MSB
:
3973 case R_IA64_DIR64LSB
:
3974 /* Install a dynamic relocation for this reloc. */
3975 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
3976 && !(h
&& UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
3977 && r_symndx
!= STN_UNDEF
3978 && (input_section
->flags
& SEC_ALLOC
) != 0)
3980 unsigned int dyn_r_type
;
3984 BFD_ASSERT (srel
!= NULL
);
3991 /* ??? People shouldn't be doing non-pic code in
3992 shared libraries nor dynamic executables. */
3994 /* xgettext:c-format */
3995 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"),
3997 h
? h
->root
.root
.string
3998 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4007 /* If we don't need dynamic symbol lookup, find a
4008 matching RELATIVE relocation. */
4009 dyn_r_type
= r_type
;
4010 if (dynamic_symbol_p
)
4012 dynindx
= h
->dynindx
;
4013 addend
= rel
->r_addend
;
4020 case R_IA64_DIR32MSB
:
4021 dyn_r_type
= R_IA64_REL32MSB
;
4023 case R_IA64_DIR32LSB
:
4024 dyn_r_type
= R_IA64_REL32LSB
;
4026 case R_IA64_DIR64MSB
:
4027 dyn_r_type
= R_IA64_REL64MSB
;
4029 case R_IA64_DIR64LSB
:
4030 dyn_r_type
= R_IA64_REL64LSB
;
4040 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4041 srel
, rel
->r_offset
, dyn_r_type
,
4046 case R_IA64_LTV32MSB
:
4047 case R_IA64_LTV32LSB
:
4048 case R_IA64_LTV64MSB
:
4049 case R_IA64_LTV64LSB
:
4050 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4053 case R_IA64_GPREL22
:
4054 case R_IA64_GPREL64I
:
4055 case R_IA64_GPREL32MSB
:
4056 case R_IA64_GPREL32LSB
:
4057 case R_IA64_GPREL64MSB
:
4058 case R_IA64_GPREL64LSB
:
4059 if (dynamic_symbol_p
)
4062 /* xgettext:c-format */
4063 (_("%pB: @gprel relocation against dynamic symbol %s"),
4065 h
? h
->root
.root
.string
4066 : bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4072 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4075 case R_IA64_LTOFF22
:
4076 case R_IA64_LTOFF22X
:
4077 case R_IA64_LTOFF64I
:
4078 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4079 value
= set_got_entry (input_bfd
, info
, dyn_i
, (h
? h
->dynindx
: -1),
4080 rel
->r_addend
, value
, R_IA64_DIRNNLSB
);
4082 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4085 case R_IA64_PLTOFF22
:
4086 case R_IA64_PLTOFF64I
:
4087 case R_IA64_PLTOFF64MSB
:
4088 case R_IA64_PLTOFF64LSB
:
4089 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4090 value
= set_pltoff_entry (output_bfd
, info
, dyn_i
, value
, FALSE
);
4092 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4095 case R_IA64_FPTR64I
:
4096 case R_IA64_FPTR32MSB
:
4097 case R_IA64_FPTR32LSB
:
4098 case R_IA64_FPTR64MSB
:
4099 case R_IA64_FPTR64LSB
:
4100 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4101 if (dyn_i
->want_fptr
)
4103 if (!undef_weak_ref
)
4104 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4106 if (!dyn_i
->want_fptr
|| bfd_link_pie (info
))
4109 unsigned int dyn_r_type
= r_type
;
4110 bfd_vma addend
= rel
->r_addend
;
4112 /* Otherwise, we expect the dynamic linker to create
4115 if (dyn_i
->want_fptr
)
4117 if (r_type
== R_IA64_FPTR64I
)
4119 /* We can't represent this without a dynamic symbol.
4120 Adjust the relocation to be against an output
4121 section symbol, which are always present in the
4122 dynamic symbol table. */
4123 /* ??? People shouldn't be doing non-pic code in
4124 shared libraries. Hork. */
4126 (_("%pB: linking non-pic code in a position independent executable"),
4133 dyn_r_type
= r_type
+ R_IA64_RELNNLSB
- R_IA64_FPTRNNLSB
;
4137 if (h
->dynindx
!= -1)
4138 dynindx
= h
->dynindx
;
4140 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4141 (info
, h
->root
.u
.def
.section
->owner
,
4142 global_sym_index (h
)));
4147 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4148 (info
, input_bfd
, (long) r_symndx
));
4152 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4153 srel
, rel
->r_offset
, dyn_r_type
,
4157 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4160 case R_IA64_LTOFF_FPTR22
:
4161 case R_IA64_LTOFF_FPTR64I
:
4162 case R_IA64_LTOFF_FPTR32MSB
:
4163 case R_IA64_LTOFF_FPTR32LSB
:
4164 case R_IA64_LTOFF_FPTR64MSB
:
4165 case R_IA64_LTOFF_FPTR64LSB
:
4169 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4170 if (dyn_i
->want_fptr
)
4172 BFD_ASSERT (h
== NULL
|| h
->dynindx
== -1);
4173 if (!undef_weak_ref
)
4174 value
= set_fptr_entry (output_bfd
, info
, dyn_i
, value
);
4179 /* Otherwise, we expect the dynamic linker to create
4183 if (h
->dynindx
!= -1)
4184 dynindx
= h
->dynindx
;
4186 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4187 (info
, h
->root
.u
.def
.section
->owner
,
4188 global_sym_index (h
)));
4191 dynindx
= (_bfd_elf_link_lookup_local_dynindx
4192 (info
, input_bfd
, (long) r_symndx
));
4196 value
= set_got_entry (output_bfd
, info
, dyn_i
, dynindx
,
4197 rel
->r_addend
, value
, R_IA64_FPTRNNLSB
);
4199 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4203 case R_IA64_PCREL32MSB
:
4204 case R_IA64_PCREL32LSB
:
4205 case R_IA64_PCREL64MSB
:
4206 case R_IA64_PCREL64LSB
:
4207 /* Install a dynamic relocation for this reloc. */
4208 if (dynamic_symbol_p
&& r_symndx
!= STN_UNDEF
)
4210 BFD_ASSERT (srel
!= NULL
);
4212 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4213 srel
, rel
->r_offset
, r_type
,
4214 h
->dynindx
, rel
->r_addend
);
4218 case R_IA64_PCREL21B
:
4219 case R_IA64_PCREL60B
:
4220 /* We should have created a PLT entry for any dynamic symbol. */
4223 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4225 if (dyn_i
&& dyn_i
->want_plt2
)
4227 /* Should have caught this earlier. */
4228 BFD_ASSERT (rel
->r_addend
== 0);
4230 value
= (ia64_info
->root
.splt
->output_section
->vma
4231 + ia64_info
->root
.splt
->output_offset
4232 + dyn_i
->plt2_offset
);
4236 /* Since there's no PLT entry, Validate that this is
4238 BFD_ASSERT (undef_weak_ref
|| sym_sec
->output_section
!= NULL
);
4240 /* If the symbol is undef_weak, we shouldn't be trying
4241 to call it. There's every chance that we'd wind up
4242 with an out-of-range fixup here. Don't bother setting
4243 any value at all. */
4249 case R_IA64_PCREL21BI
:
4250 case R_IA64_PCREL21F
:
4251 case R_IA64_PCREL21M
:
4252 case R_IA64_PCREL22
:
4253 case R_IA64_PCREL64I
:
4254 /* The PCREL21BI reloc is specifically not intended for use with
4255 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4256 fixup code, and thus probably ought not be dynamic. The
4257 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4258 if (dynamic_symbol_p
)
4262 if (r_type
== R_IA64_PCREL21BI
)
4263 /* xgettext:c-format */
4264 msg
= _("%pB: @internal branch to dynamic symbol %s");
4265 else if (r_type
== R_IA64_PCREL21F
|| r_type
== R_IA64_PCREL21M
)
4266 /* xgettext:c-format */
4267 msg
= _("%pB: speculation fixup to dynamic symbol %s");
4269 /* xgettext:c-format */
4270 msg
= _("%pB: @pcrel relocation against dynamic symbol %s");
4271 _bfd_error_handler (msg
, input_bfd
,
4272 h
? h
->root
.root
.string
4273 : bfd_elf_sym_name (input_bfd
,
4283 /* Make pc-relative. */
4284 value
-= (input_section
->output_section
->vma
4285 + input_section
->output_offset
4286 + rel
->r_offset
) & ~ (bfd_vma
) 0x3;
4287 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4290 case R_IA64_SEGREL32MSB
:
4291 case R_IA64_SEGREL32LSB
:
4292 case R_IA64_SEGREL64MSB
:
4293 case R_IA64_SEGREL64LSB
:
4295 /* Find the segment that contains the output_section. */
4296 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section
4297 (output_bfd
, input_section
->output_section
);
4301 r
= bfd_reloc_notsupported
;
4305 /* The VMA of the segment is the vaddr of the associated
4307 if (value
> p
->p_vaddr
)
4308 value
-= p
->p_vaddr
;
4311 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4316 case R_IA64_SECREL32MSB
:
4317 case R_IA64_SECREL32LSB
:
4318 case R_IA64_SECREL64MSB
:
4319 case R_IA64_SECREL64LSB
:
4320 /* Make output-section relative to section where the symbol
4321 is defined. PR 475 */
4323 value
-= sym_sec
->output_section
->vma
;
4324 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4327 case R_IA64_IPLTMSB
:
4328 case R_IA64_IPLTLSB
:
4329 /* Install a dynamic relocation for this reloc. */
4330 if ((dynamic_symbol_p
|| bfd_link_pic (info
))
4331 && (input_section
->flags
& SEC_ALLOC
) != 0)
4333 BFD_ASSERT (srel
!= NULL
);
4335 /* If we don't need dynamic symbol lookup, install two
4336 RELATIVE relocations. */
4337 if (!dynamic_symbol_p
)
4339 unsigned int dyn_r_type
;
4341 if (r_type
== R_IA64_IPLTMSB
)
4342 dyn_r_type
= R_IA64_REL64MSB
;
4344 dyn_r_type
= R_IA64_REL64LSB
;
4346 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4348 srel
, rel
->r_offset
,
4349 dyn_r_type
, 0, value
);
4350 elfNN_ia64_install_dyn_reloc (output_bfd
, info
,
4352 srel
, rel
->r_offset
+ 8,
4353 dyn_r_type
, 0, gp_val
);
4356 elfNN_ia64_install_dyn_reloc (output_bfd
, info
, input_section
,
4357 srel
, rel
->r_offset
, r_type
,
4358 h
->dynindx
, rel
->r_addend
);
4361 if (r_type
== R_IA64_IPLTMSB
)
4362 r_type
= R_IA64_DIR64MSB
;
4364 r_type
= R_IA64_DIR64LSB
;
4365 ia64_elf_install_value (hit_addr
, value
, r_type
);
4366 r
= ia64_elf_install_value (hit_addr
+ 8, gp_val
, r_type
);
4369 case R_IA64_TPREL14
:
4370 case R_IA64_TPREL22
:
4371 case R_IA64_TPREL64I
:
4372 if (elf_hash_table (info
)->tls_sec
== NULL
)
4373 goto missing_tls_sec
;
4374 value
-= elfNN_ia64_tprel_base (info
);
4375 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4378 case R_IA64_DTPREL14
:
4379 case R_IA64_DTPREL22
:
4380 case R_IA64_DTPREL64I
:
4381 case R_IA64_DTPREL32LSB
:
4382 case R_IA64_DTPREL32MSB
:
4383 case R_IA64_DTPREL64LSB
:
4384 case R_IA64_DTPREL64MSB
:
4385 if (elf_hash_table (info
)->tls_sec
== NULL
)
4386 goto missing_tls_sec
;
4387 value
-= elfNN_ia64_dtprel_base (info
);
4388 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4391 case R_IA64_LTOFF_TPREL22
:
4392 case R_IA64_LTOFF_DTPMOD22
:
4393 case R_IA64_LTOFF_DTPREL22
:
4396 long dynindx
= h
? h
->dynindx
: -1;
4397 bfd_vma r_addend
= rel
->r_addend
;
4402 case R_IA64_LTOFF_TPREL22
:
4403 if (!dynamic_symbol_p
)
4405 if (elf_hash_table (info
)->tls_sec
== NULL
)
4406 goto missing_tls_sec
;
4407 if (!bfd_link_pic (info
))
4408 value
-= elfNN_ia64_tprel_base (info
);
4411 r_addend
+= value
- elfNN_ia64_dtprel_base (info
);
4415 got_r_type
= R_IA64_TPREL64LSB
;
4417 case R_IA64_LTOFF_DTPMOD22
:
4418 if (!dynamic_symbol_p
&& !bfd_link_pic (info
))
4420 got_r_type
= R_IA64_DTPMOD64LSB
;
4422 case R_IA64_LTOFF_DTPREL22
:
4423 if (!dynamic_symbol_p
)
4425 if (elf_hash_table (info
)->tls_sec
== NULL
)
4426 goto missing_tls_sec
;
4427 value
-= elfNN_ia64_dtprel_base (info
);
4429 got_r_type
= R_IA64_DTPRELNNLSB
;
4432 dyn_i
= get_dyn_sym_info (ia64_info
, h
, input_bfd
, rel
, FALSE
);
4433 value
= set_got_entry (input_bfd
, info
, dyn_i
, dynindx
, r_addend
,
4436 r
= ia64_elf_install_value (hit_addr
, value
, r_type
);
4441 r
= bfd_reloc_notsupported
;
4450 case bfd_reloc_undefined
:
4451 /* This can happen for global table relative relocs if
4452 __gp is undefined. This is a panic situation so we
4453 don't try to continue. */
4454 (*info
->callbacks
->undefined_symbol
)
4455 (info
, "__gp", input_bfd
, input_section
, rel
->r_offset
, 1);
4458 case bfd_reloc_notsupported
:
4463 name
= h
->root
.root
.string
;
4465 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4467 (*info
->callbacks
->warning
) (info
, _("unsupported reloc"),
4469 input_section
, rel
->r_offset
);
4474 case bfd_reloc_dangerous
:
4475 case bfd_reloc_outofrange
:
4476 case bfd_reloc_overflow
:
4483 name
= h
->root
.root
.string
;
4485 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4490 case R_IA64_TPREL14
:
4491 case R_IA64_TPREL22
:
4492 case R_IA64_TPREL64I
:
4493 case R_IA64_DTPREL14
:
4494 case R_IA64_DTPREL22
:
4495 case R_IA64_DTPREL64I
:
4496 case R_IA64_DTPREL32LSB
:
4497 case R_IA64_DTPREL32MSB
:
4498 case R_IA64_DTPREL64LSB
:
4499 case R_IA64_DTPREL64MSB
:
4500 case R_IA64_LTOFF_TPREL22
:
4501 case R_IA64_LTOFF_DTPMOD22
:
4502 case R_IA64_LTOFF_DTPREL22
:
4504 /* xgettext:c-format */
4505 (_("%pB: missing TLS section for relocation %s against `%s'"
4506 " at %#" PRIx64
" in section `%pA'."),
4507 input_bfd
, howto
->name
, name
,
4508 (uint64_t) rel
->r_offset
, input_section
);
4511 case R_IA64_PCREL21B
:
4512 case R_IA64_PCREL21BI
:
4513 case R_IA64_PCREL21M
:
4514 case R_IA64_PCREL21F
:
4515 if (is_elf_hash_table (info
->hash
))
4517 /* Relaxtion is always performed for ELF output.
4518 Overflow failures for those relocations mean
4519 that the section is too big to relax. */
4521 /* xgettext:c-format */
4522 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64
4523 " in section `%pA' with size %#" PRIx64
4525 input_bfd
, howto
->name
, name
, (uint64_t) rel
->r_offset
,
4526 input_section
, (uint64_t) input_section
->size
);
4531 (*info
->callbacks
->reloc_overflow
) (info
,
4552 elfNN_ia64_finish_dynamic_symbol (bfd
*output_bfd
,
4553 struct bfd_link_info
*info
,
4554 struct elf_link_hash_entry
*h
,
4555 Elf_Internal_Sym
*sym
)
4557 struct elfNN_ia64_link_hash_table
*ia64_info
;
4558 struct elfNN_ia64_dyn_sym_info
*dyn_i
;
4560 ia64_info
= elfNN_ia64_hash_table (info
);
4561 if (ia64_info
== NULL
)
4564 dyn_i
= get_dyn_sym_info (ia64_info
, h
, NULL
, NULL
, FALSE
);
4566 /* Fill in the PLT data, if required. */
4567 if (dyn_i
&& dyn_i
->want_plt
)
4569 Elf_Internal_Rela outrel
;
4572 bfd_vma plt_addr
, pltoff_addr
, gp_val
, plt_index
;
4574 gp_val
= _bfd_get_gp_value (output_bfd
);
4576 /* Initialize the minimal PLT entry. */
4578 plt_index
= (dyn_i
->plt_offset
- PLT_HEADER_SIZE
) / PLT_MIN_ENTRY_SIZE
;
4579 plt_sec
= ia64_info
->root
.splt
;
4580 loc
= plt_sec
->contents
+ dyn_i
->plt_offset
;
4582 memcpy (loc
, plt_min_entry
, PLT_MIN_ENTRY_SIZE
);
4583 ia64_elf_install_value (loc
, plt_index
, R_IA64_IMM22
);
4584 ia64_elf_install_value (loc
+2, -dyn_i
->plt_offset
, R_IA64_PCREL21B
);
4586 plt_addr
= (plt_sec
->output_section
->vma
4587 + plt_sec
->output_offset
4588 + dyn_i
->plt_offset
);
4589 pltoff_addr
= set_pltoff_entry (output_bfd
, info
, dyn_i
, plt_addr
, TRUE
);
4591 /* Initialize the FULL PLT entry, if needed. */
4592 if (dyn_i
->want_plt2
)
4594 loc
= plt_sec
->contents
+ dyn_i
->plt2_offset
;
4596 memcpy (loc
, plt_full_entry
, PLT_FULL_ENTRY_SIZE
);
4597 ia64_elf_install_value (loc
, pltoff_addr
- gp_val
, R_IA64_IMM22
);
4599 /* Mark the symbol as undefined, rather than as defined in the
4600 plt section. Leave the value alone. */
4601 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4602 first place. But perhaps elflink.c did some for us. */
4603 if (!h
->def_regular
)
4604 sym
->st_shndx
= SHN_UNDEF
;
4607 /* Create the dynamic relocation. */
4608 outrel
.r_offset
= pltoff_addr
;
4609 if (bfd_little_endian (output_bfd
))
4610 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTLSB
);
4612 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, R_IA64_IPLTMSB
);
4613 outrel
.r_addend
= 0;
4615 /* This is fun. In the .IA_64.pltoff section, we've got entries
4616 that correspond both to real PLT entries, and those that
4617 happened to resolve to local symbols but need to be created
4618 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4619 relocations for the real PLT should come at the end of the
4620 section, so that they can be indexed by plt entry at runtime.
4622 We emitted all of the relocations for the non-PLT @pltoff
4623 entries during relocate_section. So we can consider the
4624 existing sec->reloc_count to be the base of the array of
4627 loc
= ia64_info
->rel_pltoff_sec
->contents
;
4628 loc
+= ((ia64_info
->rel_pltoff_sec
->reloc_count
+ plt_index
)
4629 * sizeof (ElfNN_External_Rela
));
4630 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
4633 /* Mark some specially defined symbols as absolute. */
4634 if (h
== ia64_info
->root
.hdynamic
4635 || h
== ia64_info
->root
.hgot
4636 || h
== ia64_info
->root
.hplt
)
4637 sym
->st_shndx
= SHN_ABS
;
4643 elfNN_ia64_finish_dynamic_sections (bfd
*abfd
,
4644 struct bfd_link_info
*info
)
4646 struct elfNN_ia64_link_hash_table
*ia64_info
;
4649 ia64_info
= elfNN_ia64_hash_table (info
);
4650 if (ia64_info
== NULL
)
4653 dynobj
= ia64_info
->root
.dynobj
;
4655 if (ia64_info
->root
.dynamic_sections_created
)
4657 ElfNN_External_Dyn
*dyncon
, *dynconend
;
4658 asection
*sdyn
, *sgotplt
;
4661 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4662 sgotplt
= ia64_info
->root
.sgotplt
;
4663 BFD_ASSERT (sdyn
!= NULL
);
4664 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
4665 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4667 gp_val
= _bfd_get_gp_value (abfd
);
4669 for (; dyncon
< dynconend
; dyncon
++)
4671 Elf_Internal_Dyn dyn
;
4673 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4678 dyn
.d_un
.d_ptr
= gp_val
;
4682 dyn
.d_un
.d_val
= (ia64_info
->minplt_entries
4683 * sizeof (ElfNN_External_Rela
));
4687 /* See the comment above in finish_dynamic_symbol. */
4688 dyn
.d_un
.d_ptr
= (ia64_info
->rel_pltoff_sec
->output_section
->vma
4689 + ia64_info
->rel_pltoff_sec
->output_offset
4690 + (ia64_info
->rel_pltoff_sec
->reloc_count
4691 * sizeof (ElfNN_External_Rela
)));
4694 case DT_IA_64_PLT_RESERVE
:
4695 dyn
.d_un
.d_ptr
= (sgotplt
->output_section
->vma
4696 + sgotplt
->output_offset
);
4700 bfd_elfNN_swap_dyn_out (abfd
, &dyn
, dyncon
);
4703 /* Initialize the PLT0 entry. */
4704 if (ia64_info
->root
.splt
)
4706 bfd_byte
*loc
= ia64_info
->root
.splt
->contents
;
4709 memcpy (loc
, plt_header
, PLT_HEADER_SIZE
);
4711 pltres
= (sgotplt
->output_section
->vma
4712 + sgotplt
->output_offset
4715 ia64_elf_install_value (loc
+1, pltres
, R_IA64_GPREL22
);
4722 /* ELF file flag handling: */
4724 /* Function to keep IA-64 specific file flags. */
4726 elfNN_ia64_set_private_flags (bfd
*abfd
, flagword flags
)
4728 BFD_ASSERT (!elf_flags_init (abfd
)
4729 || elf_elfheader (abfd
)->e_flags
== flags
);
4731 elf_elfheader (abfd
)->e_flags
= flags
;
4732 elf_flags_init (abfd
) = TRUE
;
4736 /* Merge backend specific data from an object file to the output
4737 object file when linking. */
4740 elfNN_ia64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4742 bfd
*obfd
= info
->output_bfd
;
4745 bfd_boolean ok
= TRUE
;
4747 if (!is_ia64_elf (ibfd
) || !is_ia64_elf (obfd
))
4750 in_flags
= elf_elfheader (ibfd
)->e_flags
;
4751 out_flags
= elf_elfheader (obfd
)->e_flags
;
4753 if (! elf_flags_init (obfd
))
4755 elf_flags_init (obfd
) = TRUE
;
4756 elf_elfheader (obfd
)->e_flags
= in_flags
;
4758 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4759 && bfd_get_arch_info (obfd
)->the_default
)
4761 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4762 bfd_get_mach (ibfd
));
4768 /* Check flag compatibility. */
4769 if (in_flags
== out_flags
)
4772 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4773 if (!(in_flags
& EF_IA_64_REDUCEDFP
) && (out_flags
& EF_IA_64_REDUCEDFP
))
4774 elf_elfheader (obfd
)->e_flags
&= ~EF_IA_64_REDUCEDFP
;
4776 if ((in_flags
& EF_IA_64_TRAPNIL
) != (out_flags
& EF_IA_64_TRAPNIL
))
4779 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
4782 bfd_set_error (bfd_error_bad_value
);
4785 if ((in_flags
& EF_IA_64_BE
) != (out_flags
& EF_IA_64_BE
))
4788 (_("%pB: linking big-endian files with little-endian files"),
4791 bfd_set_error (bfd_error_bad_value
);
4794 if ((in_flags
& EF_IA_64_ABI64
) != (out_flags
& EF_IA_64_ABI64
))
4797 (_("%pB: linking 64-bit files with 32-bit files"),
4800 bfd_set_error (bfd_error_bad_value
);
4803 if ((in_flags
& EF_IA_64_CONS_GP
) != (out_flags
& EF_IA_64_CONS_GP
))
4806 (_("%pB: linking constant-gp files with non-constant-gp files"),
4809 bfd_set_error (bfd_error_bad_value
);
4812 if ((in_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
)
4813 != (out_flags
& EF_IA_64_NOFUNCDESC_CONS_GP
))
4816 (_("%pB: linking auto-pic files with non-auto-pic files"),
4819 bfd_set_error (bfd_error_bad_value
);
4827 elfNN_ia64_print_private_bfd_data (bfd
*abfd
, void * ptr
)
4829 FILE *file
= (FILE *) ptr
;
4830 flagword flags
= elf_elfheader (abfd
)->e_flags
;
4832 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4834 fprintf (file
, "private flags = %s%s%s%s%s%s%s%s\n",
4835 (flags
& EF_IA_64_TRAPNIL
) ? "TRAPNIL, " : "",
4836 (flags
& EF_IA_64_EXT
) ? "EXT, " : "",
4837 (flags
& EF_IA_64_BE
) ? "BE, " : "LE, ",
4838 (flags
& EF_IA_64_REDUCEDFP
) ? "REDUCEDFP, " : "",
4839 (flags
& EF_IA_64_CONS_GP
) ? "CONS_GP, " : "",
4840 (flags
& EF_IA_64_NOFUNCDESC_CONS_GP
) ? "NOFUNCDESC_CONS_GP, " : "",
4841 (flags
& EF_IA_64_ABSOLUTE
) ? "ABSOLUTE, " : "",
4842 (flags
& EF_IA_64_ABI64
) ? "ABI64" : "ABI32");
4844 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4848 static enum elf_reloc_type_class
4849 elfNN_ia64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4850 const asection
*rel_sec ATTRIBUTE_UNUSED
,
4851 const Elf_Internal_Rela
*rela
)
4853 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
4855 case R_IA64_REL32MSB
:
4856 case R_IA64_REL32LSB
:
4857 case R_IA64_REL64MSB
:
4858 case R_IA64_REL64LSB
:
4859 return reloc_class_relative
;
4860 case R_IA64_IPLTMSB
:
4861 case R_IA64_IPLTLSB
:
4862 return reloc_class_plt
;
4864 return reloc_class_copy
;
4866 return reloc_class_normal
;
4870 static const struct bfd_elf_special_section elfNN_ia64_special_sections
[] =
4872 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4873 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
+ SHF_IA_64_SHORT
},
4874 { NULL
, 0, 0, 0, 0 }
4878 elfNN_ia64_object_p (bfd
*abfd
)
4881 asection
*group
, *unwi
, *unw
;
4884 char *unwi_name
, *unw_name
;
4887 if (abfd
->flags
& DYNAMIC
)
4890 /* Flags for fake group section. */
4891 flags
= (SEC_LINKER_CREATED
| SEC_GROUP
| SEC_LINK_ONCE
4894 /* We add a fake section group for each .gnu.linkonce.t.* section,
4895 which isn't in a section group, and its unwind sections. */
4896 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4898 if (elf_sec_group (sec
) == NULL
4899 && ((sec
->flags
& (SEC_LINK_ONCE
| SEC_CODE
| SEC_GROUP
))
4900 == (SEC_LINK_ONCE
| SEC_CODE
))
4901 && CONST_STRNEQ (sec
->name
, ".gnu.linkonce.t."))
4903 name
= sec
->name
+ 16;
4905 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unwi.");
4906 unwi_name
= bfd_alloc (abfd
, amt
);
4910 strcpy (stpcpy (unwi_name
, ".gnu.linkonce.ia64unwi."), name
);
4911 unwi
= bfd_get_section_by_name (abfd
, unwi_name
);
4913 amt
= strlen (name
) + sizeof (".gnu.linkonce.ia64unw.");
4914 unw_name
= bfd_alloc (abfd
, amt
);
4918 strcpy (stpcpy (unw_name
, ".gnu.linkonce.ia64unw."), name
);
4919 unw
= bfd_get_section_by_name (abfd
, unw_name
);
4921 /* We need to create a fake group section for it and its
4923 group
= bfd_make_section_anyway_with_flags (abfd
, name
,
4928 /* Move the fake group section to the beginning. */
4929 bfd_section_list_remove (abfd
, group
);
4930 bfd_section_list_prepend (abfd
, group
);
4932 elf_next_in_group (group
) = sec
;
4934 elf_group_name (sec
) = name
;
4935 elf_next_in_group (sec
) = sec
;
4936 elf_sec_group (sec
) = group
;
4940 elf_group_name (unwi
) = name
;
4941 elf_next_in_group (unwi
) = sec
;
4942 elf_next_in_group (sec
) = unwi
;
4943 elf_sec_group (unwi
) = group
;
4948 elf_group_name (unw
) = name
;
4951 elf_next_in_group (unw
) = elf_next_in_group (unwi
);
4952 elf_next_in_group (unwi
) = unw
;
4956 elf_next_in_group (unw
) = sec
;
4957 elf_next_in_group (sec
) = unw
;
4959 elf_sec_group (unw
) = group
;
4962 /* Fake SHT_GROUP section header. */
4963 elf_section_data (group
)->this_hdr
.bfd_section
= group
;
4964 elf_section_data (group
)->this_hdr
.sh_type
= SHT_GROUP
;
4971 elfNN_ia64_hpux_vec (const bfd_target
*vec
)
4973 extern const bfd_target ia64_elfNN_hpux_be_vec
;
4974 return (vec
== &ia64_elfNN_hpux_be_vec
);
4978 elfNN_hpux_init_file_header (bfd
*abfd
, struct bfd_link_info
*info
)
4980 Elf_Internal_Ehdr
*i_ehdrp
;
4982 if (!_bfd_elf_init_file_header (abfd
, info
))
4985 i_ehdrp
= elf_elfheader (abfd
);
4986 i_ehdrp
->e_ident
[EI_OSABI
] = get_elf_backend_data (abfd
)->elf_osabi
;
4987 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
4992 elfNN_hpux_backend_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
4993 asection
*sec
, int *retval
)
4995 if (bfd_is_com_section (sec
))
4997 *retval
= SHN_IA_64_ANSI_COMMON
;
5004 elfNN_hpux_backend_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5007 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
5009 switch (elfsym
->internal_elf_sym
.st_shndx
)
5011 case SHN_IA_64_ANSI_COMMON
:
5012 asym
->section
= bfd_com_section_ptr
;
5013 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
5014 asym
->flags
&= ~BSF_GLOBAL
;
5020 ignore_errors (const char *fmt ATTRIBUTE_UNUSED
, ...)
5024 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
5025 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5026 #define TARGET_BIG_SYM ia64_elfNN_be_vec
5027 #define TARGET_BIG_NAME "elfNN-ia64-big"
5028 #define ELF_ARCH bfd_arch_ia64
5029 #define ELF_TARGET_ID IA64_ELF_DATA
5030 #define ELF_MACHINE_CODE EM_IA_64
5031 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5032 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5033 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5034 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5036 #define elf_backend_section_from_shdr \
5037 elfNN_ia64_section_from_shdr
5038 #define elf_backend_section_flags \
5039 elfNN_ia64_section_flags
5040 #define elf_backend_fake_sections \
5041 elfNN_ia64_fake_sections
5042 #define elf_backend_final_write_processing \
5043 elfNN_ia64_final_write_processing
5044 #define elf_backend_add_symbol_hook \
5045 elfNN_ia64_add_symbol_hook
5046 #define elf_backend_additional_program_headers \
5047 elfNN_ia64_additional_program_headers
5048 #define elf_backend_modify_segment_map \
5049 elfNN_ia64_modify_segment_map
5050 #define elf_backend_modify_headers \
5051 elfNN_ia64_modify_headers
5052 #define elf_info_to_howto \
5053 elfNN_ia64_info_to_howto
5055 #define bfd_elfNN_bfd_reloc_type_lookup \
5056 ia64_elf_reloc_type_lookup
5057 #define bfd_elfNN_bfd_reloc_name_lookup \
5058 ia64_elf_reloc_name_lookup
5059 #define bfd_elfNN_bfd_is_local_label_name \
5060 elfNN_ia64_is_local_label_name
5061 #define bfd_elfNN_bfd_relax_section \
5062 elfNN_ia64_relax_section
5064 #define elf_backend_object_p \
5067 /* Stuff for the BFD linker: */
5068 #define bfd_elfNN_bfd_link_hash_table_create \
5069 elfNN_ia64_hash_table_create
5070 #define elf_backend_create_dynamic_sections \
5071 elfNN_ia64_create_dynamic_sections
5072 #define elf_backend_check_relocs \
5073 elfNN_ia64_check_relocs
5074 #define elf_backend_adjust_dynamic_symbol \
5075 elfNN_ia64_adjust_dynamic_symbol
5076 #define elf_backend_size_dynamic_sections \
5077 elfNN_ia64_size_dynamic_sections
5078 #define elf_backend_omit_section_dynsym \
5079 _bfd_elf_omit_section_dynsym_all
5080 #define elf_backend_relocate_section \
5081 elfNN_ia64_relocate_section
5082 #define elf_backend_finish_dynamic_symbol \
5083 elfNN_ia64_finish_dynamic_symbol
5084 #define elf_backend_finish_dynamic_sections \
5085 elfNN_ia64_finish_dynamic_sections
5086 #define bfd_elfNN_bfd_final_link \
5087 elfNN_ia64_final_link
5089 #define bfd_elfNN_bfd_merge_private_bfd_data \
5090 elfNN_ia64_merge_private_bfd_data
5091 #define bfd_elfNN_bfd_set_private_flags \
5092 elfNN_ia64_set_private_flags
5093 #define bfd_elfNN_bfd_print_private_bfd_data \
5094 elfNN_ia64_print_private_bfd_data
5096 #define elf_backend_plt_readonly 1
5097 #define elf_backend_can_gc_sections 1
5098 #define elf_backend_want_plt_sym 0
5099 #define elf_backend_plt_alignment 5
5100 #define elf_backend_got_header_size 0
5101 #define elf_backend_want_got_plt 1
5102 #define elf_backend_may_use_rel_p 1
5103 #define elf_backend_may_use_rela_p 1
5104 #define elf_backend_default_use_rela_p 1
5105 #define elf_backend_want_dynbss 0
5106 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5107 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5108 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5109 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5110 #define elf_backend_rela_normal 1
5111 #define elf_backend_dtrel_excludes_plt 1
5112 #define elf_backend_special_sections elfNN_ia64_special_sections
5113 #define elf_backend_default_execstack 0
5115 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5116 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5117 We don't want to flood users with so many error messages. We turn
5118 off the warning for now. It will be turned on later when the Intel
5119 compiler is fixed. */
5120 #define elf_backend_link_order_error_handler ignore_errors
5122 #include "elfNN-target.h"
5124 /* HPUX-specific vectors. */
5126 #undef TARGET_LITTLE_SYM
5127 #undef TARGET_LITTLE_NAME
5128 #undef TARGET_BIG_SYM
5129 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5130 #undef TARGET_BIG_NAME
5131 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5133 /* These are HP-UX specific functions. */
5135 #undef elf_backend_init_file_header
5136 #define elf_backend_init_file_header elfNN_hpux_init_file_header
5138 #undef elf_backend_section_from_bfd_section
5139 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5141 #undef elf_backend_symbol_processing
5142 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5144 #undef elf_backend_want_p_paddr_set_to_zero
5145 #define elf_backend_want_p_paddr_set_to_zero 1
5147 #undef ELF_COMMONPAGESIZE
5149 #define ELF_OSABI ELFOSABI_HPUX
5152 #define elfNN_bed elfNN_ia64_hpux_bed
5154 #include "elfNN-target.h"