1 /* Generic support for 64-bit ELF
2 Copyright 1999, 2000 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #include "alloca-conf.h"
27 #include "elf64-hppa.h"
30 #define PLT_ENTRY_SIZE 0x10
31 #define DLT_ENTRY_SIZE 0x8
32 #define OPD_ENTRY_SIZE 0x20
34 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl"
36 /* The stub is supposed to load the target address and target's DP
37 value out of the PLT, then do an external branch to the target
42 LDD PLTOFF+8(%r27),%r27
44 Note that we must use the LDD with a 14 bit displacement, not the one
45 with a 5 bit displacement. */
46 static char plt_stub
[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00,
47 0x53, 0x7b, 0x00, 0x00 };
49 struct elf64_hppa_dyn_hash_entry
51 struct bfd_hash_entry root
;
53 /* Offsets for this symbol in various linker sections. */
59 /* The symbol table entry, if any, that this was derived from. */
60 struct elf_link_hash_entry
*h
;
62 /* The index of the (possibly local) symbol in the input bfd and its
63 associated BFD. Needed so that we can have relocs against local
64 symbols in shared libraries. */
65 unsigned long sym_indx
;
68 /* Dynamic symbols may need to have two different values. One for
69 the dynamic symbol table, one for the normal symbol table.
71 In such cases we store the symbol's real value and section
72 index here so we can restore the real value before we write
73 the normal symbol table. */
77 /* Used to count non-got, non-plt relocations for delayed sizing
78 of relocation sections. */
79 struct elf64_hppa_dyn_reloc_entry
81 /* Next relocation in the chain. */
82 struct elf64_hppa_dyn_reloc_entry
*next
;
84 /* The type of the relocation. */
87 /* The input section of the relocation. */
90 /* The index of the section symbol for the input section of
91 the relocation. Only needed when building shared libraries. */
94 /* The offset within the input section of the relocation. */
97 /* The addend for the relocation. */
102 /* Nonzero if this symbol needs an entry in one of the linker
110 struct elf64_hppa_dyn_hash_table
112 struct bfd_hash_table root
;
115 struct elf64_hppa_link_hash_table
117 struct elf_link_hash_table root
;
119 /* Shortcuts to get to the various linker defined sections. */
121 asection
*dlt_rel_sec
;
123 asection
*plt_rel_sec
;
125 asection
*opd_rel_sec
;
126 asection
*other_rel_sec
;
128 /* Offset of __gp within .plt section. When the PLT gets large we want
129 to slide __gp into the PLT section so that we can continue to use
130 single DP relative instructions to load values out of the PLT. */
133 /* Note this is not strictly correct. We should create a stub section for
134 each input section with calls. The stub section should be placed before
135 the section with the call. */
138 bfd_vma text_segment_base
;
139 bfd_vma data_segment_base
;
141 struct elf64_hppa_dyn_hash_table dyn_hash_table
;
143 /* We build tables to map from an input section back to its
144 symbol index. This is the BFD for which we currently have
146 bfd
*section_syms_bfd
;
148 /* Array of symbol numbers for each input section attached to the
153 #define elf64_hppa_hash_table(p) \
154 ((struct elf64_hppa_link_hash_table *) ((p)->hash))
156 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
157 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
159 static boolean elf64_hppa_dyn_hash_table_init
160 PARAMS ((struct elf64_hppa_dyn_hash_table
*ht
, bfd
*abfd
,
161 new_hash_entry_func
new));
162 static struct bfd_hash_entry
*elf64_hppa_new_dyn_hash_entry
163 PARAMS ((struct bfd_hash_entry
*entry
, struct bfd_hash_table
*table
,
164 const char *string
));
165 static struct bfd_link_hash_table
*elf64_hppa_hash_table_create
166 PARAMS ((bfd
*abfd
));
167 static struct elf64_hppa_dyn_hash_entry
*elf64_hppa_dyn_hash_lookup
168 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
, const char *string
,
169 boolean create
, boolean copy
));
170 static void elf64_hppa_dyn_hash_traverse
171 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
,
172 boolean (*func
) (struct elf64_hppa_dyn_hash_entry
*, PTR
),
175 static const char *get_dyn_name
176 PARAMS ((asection
*, struct elf_link_hash_entry
*,
177 const Elf_Internal_Rela
*, char **, size_t *));
179 /* This must follow the definitions of the various derived linker
180 hash tables and shared functions. */
181 #include "elf-hppa.h"
183 static boolean elf64_hppa_object_p
186 static boolean elf64_hppa_section_from_shdr
187 PARAMS ((bfd
*, Elf64_Internal_Shdr
*, char *));
189 static void elf64_hppa_post_process_headers
190 PARAMS ((bfd
*, struct bfd_link_info
*));
192 static boolean elf64_hppa_create_dynamic_sections
193 PARAMS ((bfd
*, struct bfd_link_info
*));
195 static boolean elf64_hppa_adjust_dynamic_symbol
196 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
198 static boolean elf64_hppa_size_dynamic_sections
199 PARAMS ((bfd
*, struct bfd_link_info
*));
201 static boolean elf64_hppa_finish_dynamic_symbol
202 PARAMS ((bfd
*, struct bfd_link_info
*,
203 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
205 static boolean elf64_hppa_finish_dynamic_sections
206 PARAMS ((bfd
*, struct bfd_link_info
*));
208 static boolean elf64_hppa_check_relocs
209 PARAMS ((bfd
*, struct bfd_link_info
*,
210 asection
*, const Elf_Internal_Rela
*));
212 static boolean elf64_hppa_dynamic_symbol_p
213 PARAMS ((struct elf_link_hash_entry
*, struct bfd_link_info
*));
215 static boolean elf64_hppa_mark_exported_functions
216 PARAMS ((struct elf_link_hash_entry
*, PTR
));
218 static boolean elf64_hppa_finalize_opd
219 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
221 static boolean elf64_hppa_finalize_dlt
222 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
224 static boolean allocate_global_data_dlt
225 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
227 static boolean allocate_global_data_plt
228 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
230 static boolean allocate_global_data_stub
231 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
233 static boolean allocate_global_data_opd
234 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
236 static boolean get_reloc_section
237 PARAMS ((bfd
*, struct elf64_hppa_link_hash_table
*, asection
*));
239 static boolean count_dyn_reloc
240 PARAMS ((bfd
*, struct elf64_hppa_dyn_hash_entry
*,
241 int, asection
*, int, bfd_vma
, bfd_vma
));
243 static boolean allocate_dynrel_entries
244 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
246 static boolean elf64_hppa_finalize_dynreloc
247 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
249 static boolean get_opd
250 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
252 static boolean get_plt
253 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
255 static boolean get_dlt
256 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
258 static boolean get_stub
259 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
262 elf64_hppa_dyn_hash_table_init (ht
, abfd
, new)
263 struct elf64_hppa_dyn_hash_table
*ht
;
264 bfd
*abfd ATTRIBUTE_UNUSED
;
265 new_hash_entry_func
new;
267 memset (ht
, 0, sizeof (*ht
));
268 return bfd_hash_table_init (&ht
->root
, new);
271 static struct bfd_hash_entry
*
272 elf64_hppa_new_dyn_hash_entry (entry
, table
, string
)
273 struct bfd_hash_entry
*entry
;
274 struct bfd_hash_table
*table
;
277 struct elf64_hppa_dyn_hash_entry
*ret
;
278 ret
= (struct elf64_hppa_dyn_hash_entry
*) entry
;
280 /* Allocate the structure if it has not already been allocated by a
283 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
288 /* Initialize our local data. All zeros, and definitely easier
289 than setting 8 bit fields. */
290 memset (ret
, 0, sizeof (*ret
));
292 /* Call the allocation method of the superclass. */
293 ret
= ((struct elf64_hppa_dyn_hash_entry
*)
294 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
299 /* Create the derived linker hash table. The PA64 ELF port uses this
300 derived hash table to keep information specific to the PA ElF
301 linker (without using static variables). */
303 static struct bfd_link_hash_table
*
304 elf64_hppa_hash_table_create (abfd
)
307 struct elf64_hppa_link_hash_table
*ret
;
309 ret
= bfd_zalloc (abfd
, sizeof (*ret
));
312 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
313 _bfd_elf_link_hash_newfunc
))
315 bfd_release (abfd
, ret
);
319 if (!elf64_hppa_dyn_hash_table_init (&ret
->dyn_hash_table
, abfd
,
320 elf64_hppa_new_dyn_hash_entry
))
322 return &ret
->root
.root
;
325 /* Look up an entry in a PA64 ELF linker hash table. */
327 static struct elf64_hppa_dyn_hash_entry
*
328 elf64_hppa_dyn_hash_lookup(table
, string
, create
, copy
)
329 struct elf64_hppa_dyn_hash_table
*table
;
331 boolean create
, copy
;
333 return ((struct elf64_hppa_dyn_hash_entry
*)
334 bfd_hash_lookup (&table
->root
, string
, create
, copy
));
337 /* Traverse a PA64 ELF linker hash table. */
340 elf64_hppa_dyn_hash_traverse (table
, func
, info
)
341 struct elf64_hppa_dyn_hash_table
*table
;
342 boolean (*func
) PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
347 (boolean (*) PARAMS ((struct bfd_hash_entry
*, PTR
))) func
,
351 /* Return nonzero if ABFD represents a PA2.0 ELF64 file.
353 Additionally we set the default architecture and machine. */
355 elf64_hppa_object_p (abfd
)
358 /* Set the right machine number for an HPPA ELF file. */
359 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
362 /* Given section type (hdr->sh_type), return a boolean indicating
363 whether or not the section is an elf64-hppa specific section. */
365 elf64_hppa_section_from_shdr (abfd
, hdr
, name
)
367 Elf64_Internal_Shdr
*hdr
;
372 switch (hdr
->sh_type
)
375 if (strcmp (name
, ".PARISC.archext") != 0)
378 case SHT_PARISC_UNWIND
:
379 if (strcmp (name
, ".PARISC.unwind") != 0)
383 case SHT_PARISC_ANNOT
:
388 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
390 newsect
= hdr
->bfd_section
;
395 /* Construct a string for use in the elf64_hppa_dyn_hash_table. The
396 name describes what was once potentially anonymous memory. We
397 allocate memory as necessary, possibly reusing PBUF/PLEN. */
400 get_dyn_name (sec
, h
, rel
, pbuf
, plen
)
402 struct elf_link_hash_entry
*h
;
403 const Elf_Internal_Rela
*rel
;
411 if (h
&& rel
->r_addend
== 0)
412 return h
->root
.root
.string
;
415 nlen
= strlen (h
->root
.root
.string
);
417 nlen
= 8 + 1 + sizeof (rel
->r_info
) * 2 - 8;
418 tlen
= nlen
+ 1 + sizeof (rel
->r_addend
) * 2 + 1;
426 *pbuf
= buf
= malloc (tlen
);
434 memcpy (buf
, h
->root
.root
.string
, nlen
);
436 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
440 nlen
= sprintf (buf
, "%x:%lx",
441 sec
->id
& 0xffffffff,
442 (long) ELF64_R_SYM (rel
->r_info
));
446 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
453 /* SEC is a section containing relocs for an input BFD when linking; return
454 a suitable section for holding relocs in the output BFD for a link. */
457 get_reloc_section (abfd
, hppa_info
, sec
)
459 struct elf64_hppa_link_hash_table
*hppa_info
;
462 const char *srel_name
;
466 srel_name
= (bfd_elf_string_from_elf_section
467 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
468 elf_section_data(sec
)->rel_hdr
.sh_name
));
469 if (srel_name
== NULL
)
472 BFD_ASSERT ((strncmp (srel_name
, ".rela", 5) == 0
473 && strcmp (bfd_get_section_name (abfd
, sec
),
475 || (strncmp (srel_name
, ".rel", 4) == 0
476 && strcmp (bfd_get_section_name (abfd
, sec
),
479 dynobj
= hppa_info
->root
.dynobj
;
481 hppa_info
->root
.dynobj
= dynobj
= abfd
;
483 srel
= bfd_get_section_by_name (dynobj
, srel_name
);
486 srel
= bfd_make_section (dynobj
, srel_name
);
488 || !bfd_set_section_flags (dynobj
, srel
,
495 || !bfd_set_section_alignment (dynobj
, srel
, 3))
499 hppa_info
->other_rel_sec
= srel
;
503 /* Add a new entry to the list of dynamic relocations against DYN_H.
505 We use this to keep a record of all the FPTR relocations against a
506 particular symbol so that we can create FPTR relocations in the
510 count_dyn_reloc (abfd
, dyn_h
, type
, sec
, sec_symndx
, offset
, addend
)
512 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
519 struct elf64_hppa_dyn_reloc_entry
*rent
;
521 rent
= (struct elf64_hppa_dyn_reloc_entry
*)
522 bfd_alloc (abfd
, sizeof (*rent
));
526 rent
->next
= dyn_h
->reloc_entries
;
529 rent
->sec_symndx
= sec_symndx
;
530 rent
->offset
= offset
;
531 rent
->addend
= addend
;
532 dyn_h
->reloc_entries
= rent
;
537 /* Scan the RELOCS and record the type of dynamic entries that each
538 referenced symbol needs. */
541 elf64_hppa_check_relocs (abfd
, info
, sec
, relocs
)
543 struct bfd_link_info
*info
;
545 const Elf_Internal_Rela
*relocs
;
547 struct elf64_hppa_link_hash_table
*hppa_info
;
548 const Elf_Internal_Rela
*relend
;
549 Elf_Internal_Shdr
*symtab_hdr
;
550 const Elf_Internal_Rela
*rel
;
551 asection
*dlt
, *plt
, *stubs
;
556 if (info
->relocateable
)
559 /* If this is the first dynamic object found in the link, create
560 the special sections required for dynamic linking. */
561 if (! elf_hash_table (info
)->dynamic_sections_created
)
563 if (! bfd_elf64_link_create_dynamic_sections (abfd
, info
))
567 hppa_info
= elf64_hppa_hash_table (info
);
568 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
570 /* If necessary, build a new table holding section symbols indices
571 for this BFD. This is disgusting. */
573 if (info
->shared
&& hppa_info
->section_syms_bfd
!= abfd
)
577 Elf_Internal_Sym
*local_syms
, *isym
;
578 Elf64_External_Sym
*ext_syms
, *esym
;
580 /* We're done with the old cache of section index to section symbol
581 index information. Free it.
583 ?!? Note we leak the last section_syms array. Presumably we
584 could free it in one of the later routines in this file. */
585 if (hppa_info
->section_syms
)
586 free (hppa_info
->section_syms
);
588 /* Allocate memory for the internal and external symbols. */
590 = (Elf_Internal_Sym
*) bfd_malloc (symtab_hdr
->sh_info
591 * sizeof (Elf_Internal_Sym
));
592 if (local_syms
== NULL
)
596 = (Elf64_External_Sym
*) bfd_malloc (symtab_hdr
->sh_info
597 * sizeof (Elf64_External_Sym
));
598 if (ext_syms
== NULL
)
604 /* Read in the local symbols. */
605 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
606 || bfd_read (ext_syms
, 1,
608 * sizeof (Elf64_External_Sym
)), abfd
)
609 != (symtab_hdr
->sh_info
* sizeof (Elf64_External_Sym
)))
616 /* Swap in the local symbols, also record the highest section index
617 referenced by the local symbols. */
621 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++, esym
++, isym
++)
623 bfd_elf64_swap_symbol_in (abfd
, esym
, isym
);
624 if (isym
->st_shndx
> highest_shndx
)
625 highest_shndx
= isym
->st_shndx
;
628 /* Now we can free the external symbols. */
631 /* Allocate an array to hold the section index to section symbol index
632 mapping. Bump by one since we start counting at zero. */
634 hppa_info
->section_syms
= (int *) bfd_malloc (highest_shndx
637 /* Now walk the local symbols again. If we find a section symbol,
638 record the index of the symbol into the section_syms array. */
639 for (isym
= local_syms
, i
= 0; i
< symtab_hdr
->sh_info
; i
++, isym
++)
641 if (ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
642 hppa_info
->section_syms
[isym
->st_shndx
] = i
;
645 /* We are finished with the local symbols. Get rid of them. */
648 /* Record which BFD we built the section_syms mapping for. */
649 hppa_info
->section_syms_bfd
= abfd
;
652 /* Record the symbol index for this input section. We may need it for
653 relocations when building shared libraries. When not building shared
654 libraries this value is never really used, but assign it to zero to
655 prevent out of bounds memory accesses in other routines. */
658 sec_symndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
660 /* If we did not find a section symbol for this section, then
661 something went terribly wrong above. */
662 if (sec_symndx
== -1)
665 sec_symndx
= hppa_info
->section_syms
[sec_symndx
];
670 dlt
= plt
= stubs
= NULL
;
674 relend
= relocs
+ sec
->reloc_count
;
675 for (rel
= relocs
; rel
< relend
; ++rel
)
685 struct elf_link_hash_entry
*h
= NULL
;
686 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
687 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
689 const char *addr_name
;
690 boolean maybe_dynamic
;
691 int dynrel_type
= R_PARISC_NONE
;
692 static reloc_howto_type
*howto
;
694 if (r_symndx
>= symtab_hdr
->sh_info
)
696 /* We're dealing with a global symbol -- find its hash entry
697 and mark it as being referenced. */
698 long indx
= r_symndx
- symtab_hdr
->sh_info
;
699 h
= elf_sym_hashes (abfd
)[indx
];
700 while (h
->root
.type
== bfd_link_hash_indirect
701 || h
->root
.type
== bfd_link_hash_warning
)
702 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
704 h
->elf_link_hash_flags
|= ELF_LINK_HASH_REF_REGULAR
;
707 /* We can only get preliminary data on whether a symbol is
708 locally or externally defined, as not all of the input files
709 have yet been processed. Do something with what we know, as
710 this may help reduce memory usage and processing time later. */
711 maybe_dynamic
= false;
712 if (h
&& ((info
->shared
&& ! info
->symbolic
)
713 || ! (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
714 || h
->root
.type
== bfd_link_hash_defweak
))
715 maybe_dynamic
= true;
717 howto
= elf_hppa_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
721 /* These are simple indirect references to symbols through the
722 DLT. We need to create a DLT entry for any symbols which
723 appears in a DLTIND relocation. */
724 case R_PARISC_DLTIND21L
:
725 case R_PARISC_DLTIND14R
:
726 case R_PARISC_DLTIND14F
:
727 case R_PARISC_DLTIND14WR
:
728 case R_PARISC_DLTIND14DR
:
729 need_entry
= NEED_DLT
;
732 /* ?!? These need a DLT entry. But I have no idea what to do with
733 the "link time TP value. */
734 case R_PARISC_LTOFF_TP21L
:
735 case R_PARISC_LTOFF_TP14R
:
736 case R_PARISC_LTOFF_TP14F
:
737 case R_PARISC_LTOFF_TP64
:
738 case R_PARISC_LTOFF_TP14WR
:
739 case R_PARISC_LTOFF_TP14DR
:
740 case R_PARISC_LTOFF_TP16F
:
741 case R_PARISC_LTOFF_TP16WF
:
742 case R_PARISC_LTOFF_TP16DF
:
743 need_entry
= NEED_DLT
;
746 /* These are function calls. Depending on their precise target we
747 may need to make a stub for them. The stub uses the PLT, so we
748 need to create PLT entries for these symbols too. */
749 case R_PARISC_PCREL12F
:
750 case R_PARISC_PCREL17F
:
751 case R_PARISC_PCREL22F
:
752 case R_PARISC_PCREL32
:
753 case R_PARISC_PCREL64
:
754 case R_PARISC_PCREL21L
:
755 case R_PARISC_PCREL17R
:
756 case R_PARISC_PCREL17C
:
757 case R_PARISC_PCREL14R
:
758 case R_PARISC_PCREL14F
:
759 case R_PARISC_PCREL22C
:
760 case R_PARISC_PCREL14WR
:
761 case R_PARISC_PCREL14DR
:
762 case R_PARISC_PCREL16F
:
763 case R_PARISC_PCREL16WF
:
764 case R_PARISC_PCREL16DF
:
765 need_entry
= (NEED_PLT
| NEED_STUB
);
768 case R_PARISC_PLTOFF21L
:
769 case R_PARISC_PLTOFF14R
:
770 case R_PARISC_PLTOFF14F
:
771 case R_PARISC_PLTOFF14WR
:
772 case R_PARISC_PLTOFF14DR
:
773 case R_PARISC_PLTOFF16F
:
774 case R_PARISC_PLTOFF16WF
:
775 case R_PARISC_PLTOFF16DF
:
776 need_entry
= (NEED_PLT
);
780 if (info
->shared
|| maybe_dynamic
)
781 need_entry
= (NEED_DYNREL
);
782 dynrel_type
= R_PARISC_DIR64
;
785 /* This is an indirect reference through the DLT to get the address
786 of a OPD descriptor. Thus we need to make a DLT entry that points
788 case R_PARISC_LTOFF_FPTR21L
:
789 case R_PARISC_LTOFF_FPTR14R
:
790 case R_PARISC_LTOFF_FPTR14WR
:
791 case R_PARISC_LTOFF_FPTR14DR
:
792 case R_PARISC_LTOFF_FPTR32
:
793 case R_PARISC_LTOFF_FPTR64
:
794 case R_PARISC_LTOFF_FPTR16F
:
795 case R_PARISC_LTOFF_FPTR16WF
:
796 case R_PARISC_LTOFF_FPTR16DF
:
797 if (info
->shared
|| maybe_dynamic
)
798 need_entry
= (NEED_DLT
| NEED_OPD
);
800 need_entry
= (NEED_DLT
| NEED_OPD
);
801 dynrel_type
= R_PARISC_FPTR64
;
804 /* This is a simple OPD entry. */
805 case R_PARISC_FPTR64
:
806 if (info
->shared
|| maybe_dynamic
)
807 need_entry
= (NEED_OPD
| NEED_DYNREL
);
809 need_entry
= (NEED_OPD
);
810 dynrel_type
= R_PARISC_FPTR64
;
813 /* Add more cases as needed. */
819 /* Collect a canonical name for this address. */
820 addr_name
= get_dyn_name (sec
, h
, rel
, &buf
, &buf_len
);
822 /* Collect the canonical entry data for this address. */
823 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
824 addr_name
, true, true);
827 /* Stash away enough information to be able to find this symbol
828 regardless of whether or not it is local or global. */
831 dyn_h
->sym_indx
= r_symndx
;
833 /* ?!? We may need to do some error checking in here. */
834 /* Create what's needed. */
835 if (need_entry
& NEED_DLT
)
837 if (! hppa_info
->dlt_sec
838 && ! get_dlt (abfd
, info
, hppa_info
))
843 if (need_entry
& NEED_PLT
)
845 if (! hppa_info
->plt_sec
846 && ! get_plt (abfd
, info
, hppa_info
))
851 if (need_entry
& NEED_STUB
)
853 if (! hppa_info
->stub_sec
854 && ! get_stub (abfd
, info
, hppa_info
))
856 dyn_h
->want_stub
= 1;
859 if (need_entry
& NEED_OPD
)
861 if (! hppa_info
->opd_sec
862 && ! get_opd (abfd
, info
, hppa_info
))
867 /* FPTRs are not allocated by the dynamic linker for PA64, though
868 it is possible that will change in the future. */
870 /* This could be a local function that had its address taken, in
871 which case H will be NULL. */
873 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
876 /* Add a new dynamic relocation to the chain of dynamic
877 relocations for this symbol. */
878 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
880 if (! hppa_info
->other_rel_sec
881 && ! get_reloc_section (abfd
, hppa_info
, sec
))
884 if (!count_dyn_reloc (abfd
, dyn_h
, dynrel_type
, sec
,
885 sec_symndx
, rel
->r_offset
, rel
->r_addend
))
888 /* If we are building a shared library and we just recorded
889 a dynamic R_PARISC_FPTR64 relocation, then make sure the
890 section symbol for this section ends up in the dynamic
892 if (info
->shared
&& dynrel_type
== R_PARISC_FPTR64
893 && ! (_bfd_elf64_link_record_local_dynamic_symbol
894 (info
, abfd
, sec_symndx
)))
909 struct elf64_hppa_allocate_data
911 struct bfd_link_info
*info
;
915 /* Should we do dynamic things to this symbol? */
918 elf64_hppa_dynamic_symbol_p (h
, info
)
919 struct elf_link_hash_entry
*h
;
920 struct bfd_link_info
*info
;
925 while (h
->root
.type
== bfd_link_hash_indirect
926 || h
->root
.type
== bfd_link_hash_warning
)
927 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
929 if (h
->dynindx
== -1)
932 if (h
->root
.type
== bfd_link_hash_undefweak
933 || h
->root
.type
== bfd_link_hash_defweak
)
936 if (h
->root
.root
.string
[0] == '$' && h
->root
.root
.string
[1] == '$')
939 if ((info
->shared
&& !info
->symbolic
)
940 || ((h
->elf_link_hash_flags
941 & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
))
942 == (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
)))
948 /* Mark all funtions exported by this file so that we can later allocate
949 entries in .opd for them. */
952 elf64_hppa_mark_exported_functions (h
, data
)
953 struct elf_link_hash_entry
*h
;
956 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
957 struct elf64_hppa_link_hash_table
*hppa_info
;
959 hppa_info
= elf64_hppa_hash_table (info
);
962 && (h
->root
.type
== bfd_link_hash_defined
963 || h
->root
.type
== bfd_link_hash_defweak
)
964 && h
->root
.u
.def
.section
->output_section
!= NULL
965 && h
->type
== STT_FUNC
)
967 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
969 /* Add this symbol to the PA64 linker hash table. */
970 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
971 h
->root
.root
.string
, true, true);
975 if (! hppa_info
->opd_sec
976 && ! get_opd (hppa_info
->root
.dynobj
, info
, hppa_info
))
980 /* Put a flag here for output_symbol_hook. */
981 dyn_h
->st_shndx
= -1;
982 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
988 /* Allocate space for a DLT entry. */
991 allocate_global_data_dlt (dyn_h
, data
)
992 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
995 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
999 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1001 if (x
->info
->shared
)
1003 /* Possibly add the symbol to the local dynamic symbol
1004 table since we might need to create a dynamic relocation
1007 || (h
&& h
->dynindx
== -1))
1010 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1012 if (!_bfd_elf64_link_record_local_dynamic_symbol
1013 (x
->info
, owner
, dyn_h
->sym_indx
))
1018 dyn_h
->dlt_offset
= x
->ofs
;
1019 x
->ofs
+= DLT_ENTRY_SIZE
;
1024 /* Allocate space for a DLT.PLT entry. */
1027 allocate_global_data_plt (dyn_h
, data
)
1028 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1031 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1034 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1035 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1036 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1037 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1039 dyn_h
->plt_offset
= x
->ofs
;
1040 x
->ofs
+= PLT_ENTRY_SIZE
;
1041 if (dyn_h
->plt_offset
< 0x2000)
1042 elf64_hppa_hash_table (x
->info
)->gp_offset
= dyn_h
->plt_offset
;
1045 dyn_h
->want_plt
= 0;
1050 /* Allocate space for a STUB entry. */
1053 allocate_global_data_stub (dyn_h
, data
)
1054 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1057 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1059 if (dyn_h
->want_stub
1060 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1061 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1062 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1063 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1065 dyn_h
->stub_offset
= x
->ofs
;
1066 x
->ofs
+= sizeof (plt_stub
);
1069 dyn_h
->want_stub
= 0;
1073 /* Allocate space for a FPTR entry. */
1076 allocate_global_data_opd (dyn_h
, data
)
1077 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1080 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1082 if (dyn_h
->want_opd
)
1084 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1087 while (h
->root
.type
== bfd_link_hash_indirect
1088 || h
->root
.type
== bfd_link_hash_warning
)
1089 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1091 /* We never need an opd entry for a symbol which is not
1092 defined by this output file. */
1093 if (h
&& h
->root
.type
== bfd_link_hash_undefined
)
1094 dyn_h
->want_opd
= 0;
1096 /* If we are creating a shared library, took the address of a local
1097 function or might export this function from this object file, then
1098 we have to create an opd descriptor. */
1099 else if (x
->info
->shared
1102 || ((h
->root
.type
== bfd_link_hash_defined
1103 || h
->root
.type
== bfd_link_hash_defweak
)
1104 && h
->root
.u
.def
.section
->output_section
!= NULL
))
1106 /* If we are creating a shared library, then we will have to
1107 create a runtime relocation for the symbol to properly
1108 initialize the .opd entry. Make sure the symbol gets
1109 added to the dynamic symbol table. */
1111 && (h
== NULL
|| (h
->dynindx
== -1)))
1114 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1116 if (!_bfd_elf64_link_record_local_dynamic_symbol
1117 (x
->info
, owner
, dyn_h
->sym_indx
))
1121 /* This may not be necessary or desirable anymore now that
1122 we have some support for dealing with section symbols
1123 in dynamic relocs. But name munging does make the result
1124 much easier to debug. ie, the EPLT reloc will reference
1125 a symbol like .foobar, instead of .text + offset. */
1126 if (x
->info
->shared
&& h
)
1129 struct elf_link_hash_entry
*nh
;
1131 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
1133 strcpy (new_name
+ 1, h
->root
.root
.string
);
1135 nh
= elf_link_hash_lookup (elf_hash_table (x
->info
),
1136 new_name
, true, true, true);
1138 nh
->root
.type
= h
->root
.type
;
1139 nh
->root
.u
.def
.value
= h
->root
.u
.def
.value
;
1140 nh
->root
.u
.def
.section
= h
->root
.u
.def
.section
;
1142 if (! bfd_elf64_link_record_dynamic_symbol (x
->info
, nh
))
1146 dyn_h
->opd_offset
= x
->ofs
;
1147 x
->ofs
+= OPD_ENTRY_SIZE
;
1150 /* Otherwise we do not need an opd entry. */
1152 dyn_h
->want_opd
= 0;
1157 /* HP requires the EI_OSABI field to be filled in. The assignment to
1158 EI_ABIVERSION may not be strictly necessary. */
1161 elf64_hppa_post_process_headers (abfd
, link_info
)
1163 struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
;
1165 Elf_Internal_Ehdr
* i_ehdrp
;
1167 i_ehdrp
= elf_elfheader (abfd
);
1169 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
1170 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
1173 /* Create function descriptor section (.opd). This section is called .opd
1174 because it contains "official prodecure descriptors". The "official"
1175 refers to the fact that these descriptors are used when taking the address
1176 of a procedure, thus ensuring a unique address for each procedure. */
1179 get_opd (abfd
, info
, hppa_info
)
1181 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1182 struct elf64_hppa_link_hash_table
*hppa_info
;
1187 opd
= hppa_info
->opd_sec
;
1190 dynobj
= hppa_info
->root
.dynobj
;
1192 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1194 opd
= bfd_make_section (dynobj
, ".opd");
1196 || !bfd_set_section_flags (dynobj
, opd
,
1201 | SEC_LINKER_CREATED
))
1202 || !bfd_set_section_alignment (abfd
, opd
, 3))
1208 hppa_info
->opd_sec
= opd
;
1214 /* Create the PLT section. */
1217 get_plt (abfd
, info
, hppa_info
)
1219 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1220 struct elf64_hppa_link_hash_table
*hppa_info
;
1225 plt
= hppa_info
->plt_sec
;
1228 dynobj
= hppa_info
->root
.dynobj
;
1230 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1232 plt
= bfd_make_section (dynobj
, ".plt");
1234 || !bfd_set_section_flags (dynobj
, plt
,
1239 | SEC_LINKER_CREATED
))
1240 || !bfd_set_section_alignment (abfd
, plt
, 3))
1246 hppa_info
->plt_sec
= plt
;
1252 /* Create the DLT section. */
1255 get_dlt (abfd
, info
, hppa_info
)
1257 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1258 struct elf64_hppa_link_hash_table
*hppa_info
;
1263 dlt
= hppa_info
->dlt_sec
;
1266 dynobj
= hppa_info
->root
.dynobj
;
1268 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1270 dlt
= bfd_make_section (dynobj
, ".dlt");
1272 || !bfd_set_section_flags (dynobj
, dlt
,
1277 | SEC_LINKER_CREATED
))
1278 || !bfd_set_section_alignment (abfd
, dlt
, 3))
1284 hppa_info
->dlt_sec
= dlt
;
1290 /* Create the stubs section. */
1293 get_stub (abfd
, info
, hppa_info
)
1295 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1296 struct elf64_hppa_link_hash_table
*hppa_info
;
1301 stub
= hppa_info
->stub_sec
;
1304 dynobj
= hppa_info
->root
.dynobj
;
1306 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1308 stub
= bfd_make_section (dynobj
, ".stub");
1310 || !bfd_set_section_flags (dynobj
, stub
,
1316 | SEC_LINKER_CREATED
))
1317 || !bfd_set_section_alignment (abfd
, stub
, 3))
1323 hppa_info
->stub_sec
= stub
;
1329 /* Create sections necessary for dynamic linking. This is only a rough
1330 cut and will likely change as we learn more about the somewhat
1331 unusual dynamic linking scheme HP uses.
1334 Contains code to implement cross-space calls. The first time one
1335 of the stubs is used it will call into the dynamic linker, later
1336 calls will go straight to the target.
1338 The only stub we support right now looks like
1342 ldd OFFSET+8(%dp),%dp
1344 Other stubs may be needed in the future. We may want the remove
1345 the break/nop instruction. It is only used right now to keep the
1346 offset of a .plt entry and a .stub entry in sync.
1349 This is what most people call the .got. HP used a different name.
1353 Relocations for the DLT.
1356 Function pointers as address,gp pairs.
1359 Should contain dynamic IPLT (and EPLT?) relocations.
1365 EPLT relocations for symbols exported from shared libraries. */
1368 elf64_hppa_create_dynamic_sections (abfd
, info
)
1370 struct bfd_link_info
*info
;
1374 if (! get_stub (abfd
, info
, elf64_hppa_hash_table (info
)))
1377 if (! get_dlt (abfd
, info
, elf64_hppa_hash_table (info
)))
1380 if (! get_plt (abfd
, info
, elf64_hppa_hash_table (info
)))
1383 if (! get_opd (abfd
, info
, elf64_hppa_hash_table (info
)))
1386 s
= bfd_make_section(abfd
, ".rela.dlt");
1388 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1392 | SEC_LINKER_CREATED
))
1393 || !bfd_set_section_alignment (abfd
, s
, 3))
1395 elf64_hppa_hash_table (info
)->dlt_rel_sec
= s
;
1397 s
= bfd_make_section(abfd
, ".rela.plt");
1399 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1403 | SEC_LINKER_CREATED
))
1404 || !bfd_set_section_alignment (abfd
, s
, 3))
1406 elf64_hppa_hash_table (info
)->plt_rel_sec
= s
;
1408 s
= bfd_make_section(abfd
, ".rela.data");
1410 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1414 | SEC_LINKER_CREATED
))
1415 || !bfd_set_section_alignment (abfd
, s
, 3))
1417 elf64_hppa_hash_table (info
)->other_rel_sec
= s
;
1419 s
= bfd_make_section(abfd
, ".rela.opd");
1421 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1425 | SEC_LINKER_CREATED
))
1426 || !bfd_set_section_alignment (abfd
, s
, 3))
1428 elf64_hppa_hash_table (info
)->opd_rel_sec
= s
;
1433 /* Allocate dynamic relocations for those symbols that turned out
1437 allocate_dynrel_entries (dyn_h
, data
)
1438 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1441 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1442 struct elf64_hppa_link_hash_table
*hppa_info
;
1443 struct elf64_hppa_dyn_reloc_entry
*rent
;
1444 boolean dynamic_symbol
, shared
;
1446 hppa_info
= elf64_hppa_hash_table (x
->info
);
1447 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
);
1448 shared
= x
->info
->shared
;
1450 /* We may need to allocate relocations for a non-dynamic symbol
1451 when creating a shared library. */
1452 if (!dynamic_symbol
&& !shared
)
1455 /* Take care of the normal data relocations. */
1457 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
1461 case R_PARISC_FPTR64
:
1462 /* Allocate one iff we are not building a shared library and
1463 !want_opd, which by this point will be true only if we're
1464 actually allocating one statically in the main executable. */
1465 if (!x
->info
->shared
&& dyn_h
->want_opd
)
1469 hppa_info
->other_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1471 /* Make sure this symbol gets into the dynamic symbol table if it is
1472 not already recorded. ?!? This should not be in the loop since
1473 the symbol need only be added once. */
1474 if (dyn_h
->h
== 0 || dyn_h
->h
->dynindx
== -1)
1475 if (!_bfd_elf64_link_record_local_dynamic_symbol
1476 (x
->info
, rent
->sec
->owner
, dyn_h
->sym_indx
))
1480 /* Take care of the GOT and PLT relocations. */
1482 if ((dynamic_symbol
|| shared
) && dyn_h
->want_dlt
)
1483 hppa_info
->dlt_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1485 /* If we are building a shared library, then every symbol that has an
1486 opd entry will need an EPLT relocation to relocate the symbol's address
1487 and __gp value based on the runtime load address. */
1488 if (shared
&& dyn_h
->want_opd
)
1489 hppa_info
->opd_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1491 if (dyn_h
->want_plt
&& dynamic_symbol
)
1493 bfd_size_type t
= 0;
1495 /* Dynamic symbols get one IPLT relocation. Local symbols in
1496 shared libraries get two REL relocations. Local symbols in
1497 main applications get nothing. */
1499 t
= sizeof (Elf64_External_Rela
);
1501 t
= 2 * sizeof (Elf64_External_Rela
);
1503 hppa_info
->plt_rel_sec
->_raw_size
+= t
;
1509 /* Adjust a symbol defined by a dynamic object and referenced by a
1513 elf64_hppa_adjust_dynamic_symbol (info
, h
)
1514 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1515 struct elf_link_hash_entry
*h
;
1517 /* ??? Undefined symbols with PLT entries should be re-defined
1518 to be the PLT entry. */
1520 /* If this is a weak symbol, and there is a real definition, the
1521 processor independent code will have arranged for us to see the
1522 real definition first, and we can just use the same value. */
1523 if (h
->weakdef
!= NULL
)
1525 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1526 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1527 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1528 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1532 /* If this is a reference to a symbol defined by a dynamic object which
1533 is not a function, we might allocate the symbol in our .dynbss section
1534 and allocate a COPY dynamic relocation.
1536 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1542 /* Set the final sizes of the dynamic sections and allocate memory for
1543 the contents of our special sections. */
1546 elf64_hppa_size_dynamic_sections (output_bfd
, info
)
1548 struct bfd_link_info
*info
;
1555 struct elf64_hppa_allocate_data data
;
1556 struct elf64_hppa_link_hash_table
*hppa_info
;
1558 hppa_info
= elf64_hppa_hash_table (info
);
1560 dynobj
= elf_hash_table (info
)->dynobj
;
1561 BFD_ASSERT (dynobj
!= NULL
);
1563 if (elf_hash_table (info
)->dynamic_sections_created
)
1565 /* Set the contents of the .interp section to the interpreter. */
1568 s
= bfd_get_section_by_name (dynobj
, ".interp");
1569 BFD_ASSERT (s
!= NULL
);
1570 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1571 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1576 /* We may have created entries in the .rela.got section.
1577 However, if we are not creating the dynamic sections, we will
1578 not actually use these entries. Reset the size of .rela.dlt,
1579 which will cause it to get stripped from the output file
1581 s
= bfd_get_section_by_name (dynobj
, ".rela.dlt");
1586 /* Allocate the GOT entries. */
1589 if (elf64_hppa_hash_table (info
)->dlt_sec
)
1592 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1593 allocate_global_data_dlt
, &data
);
1594 hppa_info
->dlt_sec
->_raw_size
= data
.ofs
;
1597 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1598 allocate_global_data_plt
, &data
);
1599 hppa_info
->plt_sec
->_raw_size
= data
.ofs
;
1602 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1603 allocate_global_data_stub
, &data
);
1604 hppa_info
->stub_sec
->_raw_size
= data
.ofs
;
1607 /* Mark each function this program exports so that we will allocate
1608 space in the .opd section for each function's FPTR.
1610 We have to traverse the main linker hash table since we have to
1611 find functions which may not have been mentioned in any relocs. */
1612 elf_link_hash_traverse (elf_hash_table (info
),
1613 elf64_hppa_mark_exported_functions
,
1616 /* Allocate space for entries in the .opd section. */
1617 if (elf64_hppa_hash_table (info
)->opd_sec
)
1620 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1621 allocate_global_data_opd
, &data
);
1622 hppa_info
->opd_sec
->_raw_size
= data
.ofs
;
1625 /* Now allocate space for dynamic relocations, if necessary. */
1626 if (hppa_info
->root
.dynamic_sections_created
)
1627 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1628 allocate_dynrel_entries
, &data
);
1630 /* The sizes of all the sections are set. Allocate memory for them. */
1634 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1639 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1642 /* It's OK to base decisions on the section name, because none
1643 of the dynobj section names depend upon the input files. */
1644 name
= bfd_get_section_name (dynobj
, s
);
1648 if (strcmp (name
, ".plt") == 0)
1650 if (s
->_raw_size
== 0)
1652 /* Strip this section if we don't need it; see the
1658 /* Remember whether there is a PLT. */
1662 else if (strcmp (name
, ".dlt") == 0)
1664 if (s
->_raw_size
== 0)
1666 /* Strip this section if we don't need it; see the
1671 else if (strcmp (name
, ".opd") == 0)
1673 if (s
->_raw_size
== 0)
1675 /* Strip this section if we don't need it; see the
1680 else if (strncmp (name
, ".rela", 4) == 0)
1682 if (s
->_raw_size
== 0)
1684 /* If we don't need this section, strip it from the
1685 output file. This is mostly to handle .rela.bss and
1686 .rela.plt. We must create both sections in
1687 create_dynamic_sections, because they must be created
1688 before the linker maps input sections to output
1689 sections. The linker does that before
1690 adjust_dynamic_symbol is called, and it is that
1691 function which decides whether anything needs to go
1692 into these sections. */
1699 /* Remember whether there are any reloc sections other
1701 if (strcmp (name
, ".rela.plt") != 0)
1703 const char *outname
;
1707 /* If this relocation section applies to a read only
1708 section, then we probably need a DT_TEXTREL
1709 entry. The entries in the .rela.plt section
1710 really apply to the .got section, which we
1711 created ourselves and so know is not readonly. */
1712 outname
= bfd_get_section_name (output_bfd
,
1714 target
= bfd_get_section_by_name (output_bfd
, outname
+ 4);
1716 && (target
->flags
& SEC_READONLY
) != 0
1717 && (target
->flags
& SEC_ALLOC
) != 0)
1721 /* We use the reloc_count field as a counter if we need
1722 to copy relocs into the output file. */
1726 else if (strncmp (name
, ".dlt", 4) != 0
1727 && strcmp (name
, ".stub") != 0
1728 && strcmp (name
, ".got") != 0)
1730 /* It's not one of our sections, so don't allocate space. */
1736 _bfd_strip_section_from_output (info
, s
);
1740 /* Allocate memory for the section contents if it has not
1741 been allocated already. We use bfd_zalloc here in case
1742 unused entries are not reclaimed before the section's
1743 contents are written out. This should not happen, but this
1744 way if it does, we get a R_PARISC_NONE reloc instead of
1746 if (s
->contents
== NULL
)
1748 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1749 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1754 if (elf_hash_table (info
)->dynamic_sections_created
)
1756 /* Always create a DT_PLTGOT. It actually has nothing to do with
1757 the PLT, it is how we communicate the __gp value of a load
1758 module to the dynamic linker. */
1759 if (! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_FLAGS
, 0)
1760 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTGOT
, 0))
1763 /* Add some entries to the .dynamic section. We fill in the
1764 values later, in elf64_hppa_finish_dynamic_sections, but we
1765 must add the entries now so that we get the correct size for
1766 the .dynamic section. The DT_DEBUG entry is filled in by the
1767 dynamic linker and used by the debugger. */
1770 if (! bfd_elf64_add_dynamic_entry (info
, DT_DEBUG
, 0)
1771 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_HOOK
, 0)
1772 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_LOAD_MAP
, 0))
1778 if (! bfd_elf64_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
1779 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
1780 || ! bfd_elf64_add_dynamic_entry (info
, DT_JMPREL
, 0))
1786 if (! bfd_elf64_add_dynamic_entry (info
, DT_RELA
, 0)
1787 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELASZ
, 0)
1788 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELAENT
,
1789 sizeof (Elf64_External_Rela
)))
1795 if (! bfd_elf64_add_dynamic_entry (info
, DT_TEXTREL
, 0))
1797 info
->flags
|= DF_TEXTREL
;
1804 /* Called after we have output the symbol into the dynamic symbol
1805 table, but before we output the symbol into the normal symbol
1808 For some symbols we had to change their address when outputting
1809 the dynamic symbol table. We undo that change here so that
1810 the symbols have their expected value in the normal symbol
1814 elf64_hppa_link_output_symbol_hook (abfd
, info
, name
, sym
, input_sec
)
1815 bfd
*abfd ATTRIBUTE_UNUSED
;
1816 struct bfd_link_info
*info
;
1818 Elf_Internal_Sym
*sym
;
1819 asection
*input_sec ATTRIBUTE_UNUSED
;
1821 struct elf64_hppa_link_hash_table
*hppa_info
;
1822 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1824 /* We may be called with the file symbol or section symbols.
1825 They never need munging, so it is safe to ignore them. */
1829 /* Get the PA dyn_symbol (if any) associated with NAME. */
1830 hppa_info
= elf64_hppa_hash_table (info
);
1831 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1832 name
, false, false);
1834 /* Function symbols for which we created .opd entries *may* have been
1835 munged by finish_dynamic_symbol and have to be un-munged here.
1837 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1838 into non-dynamic ones, so we initialize st_shndx to -1 in
1839 mark_exported_functions and check to see if it was overwritten
1840 here instead of just checking dyn_h->h->dynindx. */
1841 if (dyn_h
&& dyn_h
->want_opd
&& dyn_h
->st_shndx
!= -1)
1843 /* Restore the saved value and section index. */
1844 sym
->st_value
= dyn_h
->st_value
;
1845 sym
->st_shndx
= dyn_h
->st_shndx
;
1851 /* Finish up dynamic symbol handling. We set the contents of various
1852 dynamic sections here. */
1855 elf64_hppa_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1857 struct bfd_link_info
*info
;
1858 struct elf_link_hash_entry
*h
;
1859 Elf_Internal_Sym
*sym
;
1861 asection
*stub
, *splt
, *sdlt
, *sopd
, *spltrel
, *sdltrel
;
1862 struct elf64_hppa_link_hash_table
*hppa_info
;
1863 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1865 hppa_info
= elf64_hppa_hash_table (info
);
1866 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1867 h
->root
.root
.string
, false, false);
1869 stub
= hppa_info
->stub_sec
;
1870 splt
= hppa_info
->plt_sec
;
1871 sdlt
= hppa_info
->dlt_sec
;
1872 sopd
= hppa_info
->opd_sec
;
1873 spltrel
= hppa_info
->plt_rel_sec
;
1874 sdltrel
= hppa_info
->dlt_rel_sec
;
1876 BFD_ASSERT (stub
!= NULL
&& splt
!= NULL
1877 && sopd
!= NULL
&& sdlt
!= NULL
)
1879 /* Incredible. It is actually necessary to NOT use the symbol's real
1880 value when building the dynamic symbol table for a shared library.
1881 At least for symbols that refer to functions.
1883 We will store a new value and section index into the symbol long
1884 enough to output it into the dynamic symbol table, then we restore
1885 the original values (in elf64_hppa_link_output_symbol_hook). */
1886 if (dyn_h
&& dyn_h
->want_opd
)
1888 /* Save away the original value and section index so that we
1889 can restore them later. */
1890 dyn_h
->st_value
= sym
->st_value
;
1891 dyn_h
->st_shndx
= sym
->st_shndx
;
1893 /* For the dynamic symbol table entry, we want the value to be
1894 address of this symbol's entry within the .opd section. */
1895 sym
->st_value
= (dyn_h
->opd_offset
1896 + sopd
->output_offset
1897 + sopd
->output_section
->vma
);
1898 sym
->st_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
1899 sopd
->output_section
);
1902 /* Initialize a .plt entry if requested. */
1903 if (dyn_h
&& dyn_h
->want_plt
1904 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1907 Elf_Internal_Rela rel
;
1909 /* We do not actually care about the value in the PLT entry
1910 if we are creating a shared library and the symbol is
1911 still undefined, we create a dynamic relocation to fill
1912 in the correct value. */
1913 if (info
->shared
&& h
->root
.type
== bfd_link_hash_undefined
)
1916 value
= (h
->root
.u
.def
.value
+ h
->root
.u
.def
.section
->vma
);
1918 /* Fill in the entry in the procedure linkage table.
1920 The format of a plt entry is
1923 plt_offset is the offset within the PLT section at which to
1924 install the PLT entry.
1926 We are modifying the in-memory PLT contents here, so we do not add
1927 in the output_offset of the PLT section. */
1929 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
);
1930 value
= _bfd_get_gp_value (splt
->output_section
->owner
);
1931 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
+ 0x8);
1933 /* Create a dynamic IPLT relocation for this entry.
1935 We are creating a relocation in the output file's PLT section,
1936 which is included within the DLT secton. So we do need to include
1937 the PLT's output_offset in the computation of the relocation's
1939 rel
.r_offset
= (dyn_h
->plt_offset
+ splt
->output_offset
1940 + splt
->output_section
->vma
);
1941 rel
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
1944 bfd_elf64_swap_reloca_out (splt
->output_section
->owner
, &rel
,
1945 (((Elf64_External_Rela
*)
1947 + spltrel
->reloc_count
));
1948 spltrel
->reloc_count
++;
1951 /* Initialize an external call stub entry if requested. */
1952 if (dyn_h
&& dyn_h
->want_stub
1953 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1958 /* Install the generic stub template.
1960 We are modifying the contents of the stub section, so we do not
1961 need to include the stub section's output_offset here. */
1962 memcpy (stub
->contents
+ dyn_h
->stub_offset
, plt_stub
, sizeof (plt_stub
));
1964 /* Fix up the first ldd instruction.
1966 We are modifying the contents of the STUB section in memory,
1967 so we do not need to include its output offset in this computation.
1969 Note the plt_offset value is the value of the PLT entry relative to
1970 the start of the PLT section. These instructions will reference
1971 data relative to the value of __gp, which may not necessarily have
1972 the same address as the start of the PLT section.
1974 gp_offset contains the offset of __gp within the PLT section. */
1975 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
;
1977 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
);
1979 insn
|= ((value
& 0x2000) >> 13);
1982 bfd_put_32 (stub
->owner
, (insn
| value
),
1983 stub
->contents
+ dyn_h
->stub_offset
);
1985 /* Fix up the second ldd instruction. */
1986 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
+ 8;
1988 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
+ 8);
1990 insn
|= ((value
& 0x2000) >> 13);
1993 bfd_put_32 (stub
->owner
, (insn
| value
),
1994 stub
->contents
+ dyn_h
->stub_offset
+ 8);
1997 /* Millicode symbols should not be put in the dynamic
1998 symbol table under any circumstances. */
1999 if (ELF_ST_TYPE (sym
->st_info
) == STT_PARISC_MILLI
)
2005 /* The .opd section contains FPTRs for each function this file
2006 exports. Initialize the FPTR entries. */
2009 elf64_hppa_finalize_opd (dyn_h
, data
)
2010 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2013 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2014 struct elf64_hppa_link_hash_table
*hppa_info
;
2015 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2019 hppa_info
= elf64_hppa_hash_table (info
);
2020 sopd
= hppa_info
->opd_sec
;
2021 sopdrel
= hppa_info
->opd_rel_sec
;
2023 if (h
&& dyn_h
&& dyn_h
->want_opd
)
2027 /* The first two words of an .opd entry are zero.
2029 We are modifying the contents of the OPD section in memory, so we
2030 do not need to include its output offset in this computation. */
2031 memset (sopd
->contents
+ dyn_h
->opd_offset
, 0, 16);
2033 value
= (h
->root
.u
.def
.value
2034 + h
->root
.u
.def
.section
->output_section
->vma
2035 + h
->root
.u
.def
.section
->output_offset
);
2037 /* The next word is the address of the function. */
2038 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 16);
2040 /* The last word is our local __gp value. */
2041 value
= _bfd_get_gp_value (sopd
->output_section
->owner
);
2042 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 24);
2045 /* If we are generating a shared library, we must generate EPLT relocations
2046 for each entry in the .opd, even for static functions (they may have
2047 had their address taken). */
2048 if (info
->shared
&& dyn_h
&& dyn_h
->want_opd
)
2050 Elf64_Internal_Rela rel
;
2053 /* We may need to do a relocation against a local symbol, in
2054 which case we have to look up it's dynamic symbol index off
2055 the local symbol hash table. */
2056 if (h
&& h
->dynindx
!= -1)
2057 dynindx
= h
->dynindx
;
2060 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2063 /* The offset of this relocation is the absolute address of the
2064 .opd entry for this symbol. */
2065 rel
.r_offset
= (dyn_h
->opd_offset
+ sopd
->output_offset
2066 + sopd
->output_section
->vma
);
2068 /* If H is non-null, then we have an external symbol.
2070 It is imperative that we use a different dynamic symbol for the
2071 EPLT relocation if the symbol has global scope.
2073 In the dynamic symbol table, the function symbol will have a value
2074 which is address of the function's .opd entry.
2076 Thus, we can not use that dynamic symbol for the EPLT relocation
2077 (if we did, the data in the .opd would reference itself rather
2078 than the actual address of the function). Instead we have to use
2079 a new dynamic symbol which has the same value as the original global
2082 We prefix the original symbol with a "." and use the new symbol in
2083 the EPLT relocation. This new symbol has already been recorded in
2084 the symbol table, we just have to look it up and use it.
2086 We do not have such problems with static functions because we do
2087 not make their addresses in the dynamic symbol table point to
2088 the .opd entry. Ultimately this should be safe since a static
2089 function can not be directly referenced outside of its shared
2092 We do have to play similar games for FPTR relocations in shared
2093 libraries, including those for static symbols. See the FPTR
2094 handling in elf64_hppa_finalize_dynreloc. */
2098 struct elf_link_hash_entry
*nh
;
2100 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
2102 strcpy (new_name
+ 1, h
->root
.root
.string
);
2104 nh
= elf_link_hash_lookup (elf_hash_table (info
),
2105 new_name
, false, false, false);
2107 /* All we really want from the new symbol is its dynamic
2109 dynindx
= nh
->dynindx
;
2113 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_EPLT
);
2115 bfd_elf64_swap_reloca_out (sopd
->output_section
->owner
, &rel
,
2116 (((Elf64_External_Rela
*)
2118 + sopdrel
->reloc_count
));
2119 sopdrel
->reloc_count
++;
2124 /* The .dlt section contains addresses for items referenced through the
2125 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2126 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2129 elf64_hppa_finalize_dlt (dyn_h
, data
)
2130 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2133 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2134 struct elf64_hppa_link_hash_table
*hppa_info
;
2135 asection
*sdlt
, *sdltrel
;
2136 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2138 hppa_info
= elf64_hppa_hash_table (info
);
2140 sdlt
= hppa_info
->dlt_sec
;
2141 sdltrel
= hppa_info
->dlt_rel_sec
;
2143 /* H/DYN_H may refer to a local variable and we know it's
2144 address, so there is no need to create a relocation. Just install
2145 the proper value into the DLT, note this shortcut can not be
2146 skipped when building a shared library. */
2147 if (! info
->shared
&& h
&& dyn_h
&& dyn_h
->want_dlt
)
2151 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2152 to point to the FPTR entry in the .opd section.
2154 We include the OPD's output offset in this computation as
2155 we are referring to an absolute address in the resulting
2157 if (dyn_h
->want_opd
)
2159 value
= (dyn_h
->opd_offset
2160 + hppa_info
->opd_sec
->output_offset
2161 + hppa_info
->opd_sec
->output_section
->vma
);
2165 value
= (h
->root
.u
.def
.value
2166 + h
->root
.u
.def
.section
->output_offset
);
2168 if (h
->root
.u
.def
.section
->output_section
)
2169 value
+= h
->root
.u
.def
.section
->output_section
->vma
;
2171 value
+= h
->root
.u
.def
.section
->vma
;
2174 /* We do not need to include the output offset of the DLT section
2175 here because we are modifying the in-memory contents. */
2176 bfd_put_64 (sdlt
->owner
, value
, sdlt
->contents
+ dyn_h
->dlt_offset
);
2179 /* Create a relocation for the DLT entry assocated with this symbol.
2180 When building a shared library the symbol does not have to be dynamic. */
2182 && (elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
) || info
->shared
))
2184 Elf64_Internal_Rela rel
;
2187 /* We may need to do a relocation against a local symbol, in
2188 which case we have to look up it's dynamic symbol index off
2189 the local symbol hash table. */
2190 if (h
&& h
->dynindx
!= -1)
2191 dynindx
= h
->dynindx
;
2194 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2197 /* Create a dynamic relocation for this entry. Do include the output
2198 offset of the DLT entry since we need an absolute address in the
2199 resulting object file. */
2200 rel
.r_offset
= (dyn_h
->dlt_offset
+ sdlt
->output_offset
2201 + sdlt
->output_section
->vma
);
2202 if (h
&& h
->type
== STT_FUNC
)
2203 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_FPTR64
);
2205 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_DIR64
);
2208 bfd_elf64_swap_reloca_out (sdlt
->output_section
->owner
, &rel
,
2209 (((Elf64_External_Rela
*)
2211 + sdltrel
->reloc_count
));
2212 sdltrel
->reloc_count
++;
2217 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2218 for dynamic functions used to initialize static data. */
2221 elf64_hppa_finalize_dynreloc (dyn_h
, data
)
2222 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2225 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2226 struct elf64_hppa_link_hash_table
*hppa_info
;
2227 struct elf_link_hash_entry
*h
;
2230 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
);
2232 if (!dynamic_symbol
&& !info
->shared
)
2235 if (dyn_h
->reloc_entries
)
2237 struct elf64_hppa_dyn_reloc_entry
*rent
;
2240 hppa_info
= elf64_hppa_hash_table (info
);
2243 /* We may need to do a relocation against a local symbol, in
2244 which case we have to look up it's dynamic symbol index off
2245 the local symbol hash table. */
2246 if (h
&& h
->dynindx
!= -1)
2247 dynindx
= h
->dynindx
;
2250 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2253 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
2255 Elf64_Internal_Rela rel
;
2259 case R_PARISC_FPTR64
:
2260 /* Allocate one iff we are not building a shared library and
2261 !want_opd, which by this point will be true only if we're
2262 actually allocating one statically in the main executable. */
2263 if (!info
->shared
&& dyn_h
->want_opd
)
2268 /* Create a dynamic relocation for this entry.
2270 We need the output offset for the reloc's section because
2271 we are creating an absolute address in the resulting object
2273 rel
.r_offset
= (rent
->offset
+ rent
->sec
->output_offset
2274 + rent
->sec
->output_section
->vma
);
2276 /* An FPTR64 relocation implies that we took the address of
2277 a function and that the function has an entry in the .opd
2278 section. We want the FPTR64 relocation to reference the
2281 We could munge the symbol value in the dynamic symbol table
2282 (in fact we already do for functions with global scope) to point
2283 to the .opd entry. Then we could use that dynamic symbol in
2286 Or we could do something sensible, not munge the symbol's
2287 address and instead just use a different symbol to reference
2288 the .opd entry. At least that seems sensible until you
2289 realize there's no local dynamic symbols we can use for that
2290 purpose. Thus the hair in the check_relocs routine.
2292 We use a section symbol recorded by check_relocs as the
2293 base symbol for the relocation. The addend is the difference
2294 between the section symbol and the address of the .opd entry. */
2295 if (info
->shared
&& rent
->type
== R_PARISC_FPTR64
)
2297 bfd_vma value
, value2
;
2299 /* First compute the address of the opd entry for this symbol. */
2300 value
= (dyn_h
->opd_offset
2301 + hppa_info
->opd_sec
->output_section
->vma
2302 + hppa_info
->opd_sec
->output_offset
);
2304 /* Compute the value of the start of the section with
2306 value2
= (rent
->sec
->output_section
->vma
2307 + rent
->sec
->output_offset
);
2309 /* Compute the difference between the start of the section
2310 with the relocation and the opd entry. */
2313 /* The result becomes the addend of the relocation. */
2314 rel
.r_addend
= value
;
2316 /* The section symbol becomes the symbol for the dynamic
2319 = _bfd_elf_link_lookup_local_dynindx (info
,
2324 rel
.r_addend
= rent
->addend
;
2326 rel
.r_info
= ELF64_R_INFO (dynindx
, rent
->type
);
2328 bfd_elf64_swap_reloca_out (hppa_info
->other_rel_sec
->output_section
->owner
,
2330 (((Elf64_External_Rela
*)
2331 hppa_info
->other_rel_sec
->contents
)
2332 + hppa_info
->other_rel_sec
->reloc_count
));
2333 hppa_info
->other_rel_sec
->reloc_count
++;
2340 /* Finish up the dynamic sections. */
2343 elf64_hppa_finish_dynamic_sections (output_bfd
, info
)
2345 struct bfd_link_info
*info
;
2349 struct elf64_hppa_link_hash_table
*hppa_info
;
2351 hppa_info
= elf64_hppa_hash_table (info
);
2353 /* Finalize the contents of the .opd section. */
2354 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2355 elf64_hppa_finalize_opd
,
2358 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2359 elf64_hppa_finalize_dynreloc
,
2362 /* Finalize the contents of the .dlt section. */
2363 dynobj
= elf_hash_table (info
)->dynobj
;
2364 /* Finalize the contents of the .dlt section. */
2365 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2366 elf64_hppa_finalize_dlt
,
2369 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2371 if (elf_hash_table (info
)->dynamic_sections_created
)
2373 Elf64_External_Dyn
*dyncon
, *dynconend
;
2375 BFD_ASSERT (sdyn
!= NULL
);
2377 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2378 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2379 for (; dyncon
< dynconend
; dyncon
++)
2381 Elf_Internal_Dyn dyn
;
2384 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2391 case DT_HP_LOAD_MAP
:
2392 /* Compute the absolute address of 16byte scratchpad area
2393 for the dynamic linker.
2395 By convention the linker script will allocate the scratchpad
2396 area at the start of the .data section. So all we have to
2397 to is find the start of the .data section. */
2398 s
= bfd_get_section_by_name (output_bfd
, ".data");
2399 dyn
.d_un
.d_ptr
= s
->vma
;
2400 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2404 /* HP's use PLTGOT to set the GOT register. */
2405 dyn
.d_un
.d_ptr
= _bfd_get_gp_value (output_bfd
);
2406 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2410 s
= hppa_info
->plt_rel_sec
;
2411 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2412 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2416 s
= hppa_info
->plt_rel_sec
;
2417 dyn
.d_un
.d_val
= s
->_raw_size
;
2418 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2422 s
= hppa_info
->other_rel_sec
;
2424 s
= hppa_info
->dlt_rel_sec
;
2425 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2426 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2430 s
= hppa_info
->other_rel_sec
;
2431 dyn
.d_un
.d_val
= s
->_raw_size
;
2432 s
= hppa_info
->dlt_rel_sec
;
2433 dyn
.d_un
.d_val
+= s
->_raw_size
;
2434 s
= hppa_info
->opd_rel_sec
;
2435 dyn
.d_un
.d_val
+= s
->_raw_size
;
2436 /* There is some question about whether or not the size of
2437 the PLT relocs should be included here. HP's tools do
2438 it, so we'll emulate them. */
2439 s
= hppa_info
->plt_rel_sec
;
2440 dyn
.d_un
.d_val
+= s
->_raw_size
;
2441 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2451 /* Return the number of additional phdrs we will need.
2453 The generic ELF code only creates PT_PHDRs for executables. The HP
2454 dynamic linker requires PT_PHDRs for dynamic libraries too.
2456 This routine indicates that the backend needs one additional program
2457 header for that case.
2459 Note we do not have access to the link info structure here, so we have
2460 to guess whether or not we are building a shared library based on the
2461 existence of a .interp section. */
2464 elf64_hppa_additional_program_headers (abfd
)
2469 /* If we are creating a shared library, then we have to create a
2470 PT_PHDR segment. HP's dynamic linker chokes without it. */
2471 s
= bfd_get_section_by_name (abfd
, ".interp");
2477 /* Allocate and initialize any program headers required by this
2480 The generic ELF code only creates PT_PHDRs for executables. The HP
2481 dynamic linker requires PT_PHDRs for dynamic libraries too.
2483 This allocates the PT_PHDR and initializes it in a manner suitable
2486 Note we do not have access to the link info structure here, so we have
2487 to guess whether or not we are building a shared library based on the
2488 existence of a .interp section. */
2491 elf64_hppa_modify_segment_map (abfd
)
2494 struct elf_segment_map
*m
;
2497 s
= bfd_get_section_by_name (abfd
, ".interp");
2500 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2501 if (m
->p_type
== PT_PHDR
)
2505 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, sizeof *m
);
2509 m
->p_type
= PT_PHDR
;
2510 m
->p_flags
= PF_R
| PF_X
;
2511 m
->p_flags_valid
= 1;
2512 m
->p_paddr_valid
= 1;
2513 m
->includes_phdrs
= 1;
2515 m
->next
= elf_tdata (abfd
)->segment_map
;
2516 elf_tdata (abfd
)->segment_map
= m
;
2520 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2521 if (m
->p_type
== PT_LOAD
)
2525 for (i
= 0; i
< m
->count
; i
++)
2527 /* The code "hint" is not really a hint. It is a requirement
2528 for certain versions of the HP dynamic linker. Worse yet,
2529 it must be set even if the shared library does not have
2530 any code in its "text" segment (thus the check for .hash
2531 to catch this situation). */
2532 if (m
->sections
[i
]->flags
& SEC_CODE
2533 || (strcmp (m
->sections
[i
]->name
, ".hash") == 0))
2534 m
->p_flags
|= (PF_X
| PF_HP_CODE
);
2541 /* The hash bucket size is the standard one, namely 4. */
2543 const struct elf_size_info hppa64_elf_size_info
=
2545 sizeof (Elf64_External_Ehdr
),
2546 sizeof (Elf64_External_Phdr
),
2547 sizeof (Elf64_External_Shdr
),
2548 sizeof (Elf64_External_Rel
),
2549 sizeof (Elf64_External_Rela
),
2550 sizeof (Elf64_External_Sym
),
2551 sizeof (Elf64_External_Dyn
),
2552 sizeof (Elf_External_Note
),
2556 ELFCLASS64
, EV_CURRENT
,
2557 bfd_elf64_write_out_phdrs
,
2558 bfd_elf64_write_shdrs_and_ehdr
,
2559 bfd_elf64_write_relocs
,
2560 bfd_elf64_swap_symbol_out
,
2561 bfd_elf64_slurp_reloc_table
,
2562 bfd_elf64_slurp_symbol_table
,
2563 bfd_elf64_swap_dyn_in
,
2564 bfd_elf64_swap_dyn_out
,
2571 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2572 #define TARGET_BIG_NAME "elf64-hppa"
2573 #define ELF_ARCH bfd_arch_hppa
2574 #define ELF_MACHINE_CODE EM_PARISC
2575 /* This is not strictly correct. The maximum page size for PA2.0 is
2576 64M. But everything still uses 4k. */
2577 #define ELF_MAXPAGESIZE 0x1000
2578 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2579 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2580 #define elf_info_to_howto elf_hppa_info_to_howto
2581 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2583 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2584 #define elf_backend_object_p elf64_hppa_object_p
2585 #define elf_backend_final_write_processing \
2586 elf_hppa_final_write_processing
2587 #define elf_backend_fake_sections elf_hppa_fake_sections
2588 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2590 #define elf_backend_relocate_section elf_hppa_relocate_section
2592 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2594 #define elf_backend_create_dynamic_sections \
2595 elf64_hppa_create_dynamic_sections
2596 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2598 #define elf_backend_adjust_dynamic_symbol \
2599 elf64_hppa_adjust_dynamic_symbol
2601 #define elf_backend_size_dynamic_sections \
2602 elf64_hppa_size_dynamic_sections
2604 #define elf_backend_finish_dynamic_symbol \
2605 elf64_hppa_finish_dynamic_symbol
2606 #define elf_backend_finish_dynamic_sections \
2607 elf64_hppa_finish_dynamic_sections
2609 /* Stuff for the BFD linker: */
2610 #define bfd_elf64_bfd_link_hash_table_create \
2611 elf64_hppa_hash_table_create
2613 #define elf_backend_check_relocs \
2614 elf64_hppa_check_relocs
2616 #define elf_backend_size_info \
2617 hppa64_elf_size_info
2619 #define elf_backend_additional_program_headers \
2620 elf64_hppa_additional_program_headers
2622 #define elf_backend_modify_segment_map \
2623 elf64_hppa_modify_segment_map
2625 #define elf_backend_link_output_symbol_hook \
2626 elf64_hppa_link_output_symbol_hook
2628 #define elf_backend_want_got_plt 0
2629 #define elf_backend_plt_readonly 0
2630 #define elf_backend_want_plt_sym 0
2631 #define elf_backend_got_header_size 0
2632 #define elf_backend_plt_header_size 0
2633 #define elf_backend_type_change_ok true
2635 #include "elf64-target.h"