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. */
26 #include "elf64-hppa.h"
29 #define PLT_ENTRY_SIZE 0x10
30 #define DLT_ENTRY_SIZE 0x8
31 #define OPD_ENTRY_SIZE 0x20
33 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl"
35 /* The stub is supposed to load the target address and target's DP
36 value out of the PLT, then do an external branch to the target
41 LDD PLTOFF+8(%r27),%r27
43 Note that we must use the LDD with a 14 bit displacement, not the one
44 with a 5 bit displacement. */
45 static char plt_stub
[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00,
46 0x53, 0x7b, 0x00, 0x00 };
48 struct elf64_hppa_dyn_hash_entry
50 struct bfd_hash_entry root
;
52 /* Offsets for this symbol in various linker sections. */
58 /* The symbol table entry, if any, that this was derived from. */
59 struct elf_link_hash_entry
*h
;
61 /* The index of the (possibly local) symbol in the input bfd and its
62 associated BFD. Needed so that we can have relocs against local
63 symbols in shared libraries. */
64 unsigned long sym_indx
;
67 /* Dynamic symbols may need to have two different values. One for
68 the dynamic symbol table, one for the normal symbol table.
70 In such cases we store the symbol's real value and section
71 index here so we can restore the real value before we write
72 the normal symbol table. */
76 /* Used to count non-got, non-plt relocations for delayed sizing
77 of relocation sections. */
78 struct elf64_hppa_dyn_reloc_entry
80 /* Next relocation in the chain. */
81 struct elf64_hppa_dyn_reloc_entry
*next
;
83 /* The type of the relocation. */
86 /* The input section of the relocation. */
89 /* The index of the section symbol for the input section of
90 the relocation. Only needed when building shared libraries. */
93 /* The offset within the input section of the relocation. */
96 /* The addend for the relocation. */
101 /* Nonzero if this symbol needs an entry in one of the linker
109 struct elf64_hppa_dyn_hash_table
111 struct bfd_hash_table root
;
114 struct elf64_hppa_link_hash_table
116 struct elf_link_hash_table root
;
118 /* Shortcuts to get to the various linker defined sections. */
120 asection
*dlt_rel_sec
;
122 asection
*plt_rel_sec
;
124 asection
*opd_rel_sec
;
125 asection
*other_rel_sec
;
127 /* Offset of __gp within .plt section. When the PLT gets large we want
128 to slide __gp into the PLT section so that we can continue to use
129 single DP relative instructions to load values out of the PLT. */
132 /* Note this is not strictly correct. We should create a stub section for
133 each input section with calls. The stub section should be placed before
134 the section with the call. */
137 bfd_vma text_segment_base
;
138 bfd_vma data_segment_base
;
140 struct elf64_hppa_dyn_hash_table dyn_hash_table
;
142 /* We build tables to map from an input section back to its
143 symbol index. This is the BFD for which we currently have
145 bfd
*section_syms_bfd
;
147 /* Array of symbol numbers for each input section attached to the
152 #define elf64_hppa_hash_table(p) \
153 ((struct elf64_hppa_link_hash_table *) ((p)->hash))
155 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
156 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
158 static boolean elf64_hppa_dyn_hash_table_init
159 PARAMS ((struct elf64_hppa_dyn_hash_table
*ht
, bfd
*abfd
,
160 new_hash_entry_func
new));
161 static struct bfd_hash_entry
*elf64_hppa_new_dyn_hash_entry
162 PARAMS ((struct bfd_hash_entry
*entry
, struct bfd_hash_table
*table
,
163 const char *string
));
164 static struct bfd_link_hash_table
*elf64_hppa_hash_table_create
165 PARAMS ((bfd
*abfd
));
166 static struct elf64_hppa_dyn_hash_entry
*elf64_hppa_dyn_hash_lookup
167 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
, const char *string
,
168 boolean create
, boolean copy
));
169 static void elf64_hppa_dyn_hash_traverse
170 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
,
171 boolean (*func
)(struct elf64_hppa_dyn_hash_entry
*, PTR
),
174 static const char *get_dyn_name
175 PARAMS ((bfd
*abfd
, struct elf_link_hash_entry
*h
,
176 const Elf_Internal_Rela
*rel
, char **pbuf
, size_t *plen
));
179 /* This must follow the definitions of the various derived linker
180 hash tables and shared functions. */
181 #include "elf-hppa.h"
184 static boolean elf64_hppa_object_p
187 static boolean elf64_hppa_section_from_shdr
188 PARAMS ((bfd
*, Elf64_Internal_Shdr
*, char *));
190 static void elf64_hppa_post_process_headers
191 PARAMS ((bfd
*, struct bfd_link_info
*));
193 static boolean elf64_hppa_create_dynamic_sections
194 PARAMS ((bfd
*, struct bfd_link_info
*));
196 static boolean elf64_hppa_adjust_dynamic_symbol
197 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
199 static boolean elf64_hppa_size_dynamic_sections
200 PARAMS ((bfd
*, struct bfd_link_info
*));
202 static boolean elf64_hppa_finish_dynamic_symbol
203 PARAMS ((bfd
*, struct bfd_link_info
*,
204 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
206 static boolean elf64_hppa_finish_dynamic_sections
207 PARAMS ((bfd
*, struct bfd_link_info
*));
209 static boolean elf64_hppa_check_relocs
210 PARAMS ((bfd
*, struct bfd_link_info
*,
211 asection
*, const Elf_Internal_Rela
*));
213 static boolean elf64_hppa_dynamic_symbol_p
214 PARAMS ((struct elf_link_hash_entry
*, struct bfd_link_info
*));
216 static boolean elf64_hppa_mark_exported_functions
217 PARAMS ((struct elf_link_hash_entry
*, PTR
));
219 static boolean elf64_hppa_finalize_opd
220 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
222 static boolean elf64_hppa_finalize_dlt
223 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
225 static boolean allocate_global_data_dlt
226 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
228 static boolean allocate_global_data_plt
229 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
231 static boolean allocate_global_data_stub
232 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
234 static boolean allocate_global_data_opd
235 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
237 static boolean get_reloc_section
238 PARAMS ((bfd
*, struct elf64_hppa_link_hash_table
*, asection
*));
240 static boolean count_dyn_reloc
241 PARAMS ((bfd
*, struct elf64_hppa_dyn_hash_entry
*,
242 int, asection
*, int, bfd_vma
, bfd_vma
));
244 static boolean allocate_dynrel_entries
245 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
247 static boolean elf64_hppa_finalize_dynreloc
248 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
250 static boolean get_opd
251 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
253 static boolean get_plt
254 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
256 static boolean get_dlt
257 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
259 static boolean get_stub
260 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
263 elf64_hppa_dyn_hash_table_init (ht
, abfd
, new)
264 struct elf64_hppa_dyn_hash_table
*ht
;
265 bfd
*abfd ATTRIBUTE_UNUSED
;
266 new_hash_entry_func
new;
268 memset (ht
, 0, sizeof(*ht
));
269 return bfd_hash_table_init (&ht
->root
, new);
272 static struct bfd_hash_entry
*
273 elf64_hppa_new_dyn_hash_entry (entry
, table
, string
)
274 struct bfd_hash_entry
*entry
;
275 struct bfd_hash_table
*table
;
278 struct elf64_hppa_dyn_hash_entry
*ret
;
279 ret
= (struct elf64_hppa_dyn_hash_entry
*) entry
;
281 /* Allocate the structure if it has not already been allocated by a
284 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
289 /* Initialize our local data. All zeros, and definitely easier
290 than setting 8 bit fields. */
291 memset (ret
, 0, sizeof(*ret
));
293 /* Call the allocation method of the superclass. */
294 ret
= ((struct elf64_hppa_dyn_hash_entry
*)
295 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
300 /* Create the derived linker hash table. The PA64 ELF port uses this
301 derived hash table to keep information specific to the PA ElF
302 linker (without using static variables). */
304 static struct bfd_link_hash_table
*
305 elf64_hppa_hash_table_create (abfd
)
308 struct elf64_hppa_link_hash_table
*ret
;
310 ret
= bfd_zalloc (abfd
, sizeof (*ret
));
313 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
314 _bfd_elf_link_hash_newfunc
))
316 bfd_release (abfd
, ret
);
320 if (!elf64_hppa_dyn_hash_table_init (&ret
->dyn_hash_table
, abfd
,
321 elf64_hppa_new_dyn_hash_entry
))
323 return &ret
->root
.root
;
326 /* Look up an entry in a PA64 ELF linker hash table. */
328 static struct elf64_hppa_dyn_hash_entry
*
329 elf64_hppa_dyn_hash_lookup(table
, string
, create
, copy
)
330 struct elf64_hppa_dyn_hash_table
*table
;
332 boolean create
, copy
;
334 return ((struct elf64_hppa_dyn_hash_entry
*)
335 bfd_hash_lookup (&table
->root
, string
, create
, copy
));
338 /* Traverse a PA64 ELF linker hash table. */
341 elf64_hppa_dyn_hash_traverse (table
, func
, info
)
342 struct elf64_hppa_dyn_hash_table
*table
;
343 boolean (*func
) PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
348 (boolean (*) PARAMS ((struct bfd_hash_entry
*, PTR
))) func
,
352 /* Return nonzero if ABFD represents a PA2.0 ELF64 file.
354 Additionally we set the default architecture and machine. */
356 elf64_hppa_object_p (abfd
)
359 /* Set the right machine number for an HPPA ELF file. */
360 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
363 /* Given section type (hdr->sh_type), return a boolean indicating
364 whether or not the section is an elf64-hppa specific section. */
366 elf64_hppa_section_from_shdr (abfd
, hdr
, name
)
368 Elf64_Internal_Shdr
*hdr
;
373 switch (hdr
->sh_type
)
376 if (strcmp (name
, ".PARISC.archext") != 0)
379 case SHT_PARISC_UNWIND
:
380 if (strcmp (name
, ".PARISC.unwind") != 0)
384 case SHT_PARISC_ANNOT
:
389 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
391 newsect
= hdr
->bfd_section
;
397 /* Construct a string for use in the elf64_hppa_dyn_hash_table. The
398 name describes what was once potentially anonymous memory. We
399 allocate memory as necessary, possibly reusing PBUF/PLEN. */
402 get_dyn_name (abfd
, h
, rel
, pbuf
, plen
)
404 struct elf_link_hash_entry
*h
;
405 const Elf_Internal_Rela
*rel
;
413 if (h
&& rel
->r_addend
== 0)
414 return h
->root
.root
.string
;
417 nlen
= strlen (h
->root
.root
.string
);
420 nlen
= sizeof(void*)*2 + 1 + sizeof(bfd_vma
)*4 + 1 + 1;
421 nlen
+= 10; /* %p slop */
423 tlen
= nlen
+ 1 + 16 + 1;
431 *pbuf
= buf
= malloc (tlen
);
439 memcpy (buf
, h
->root
.root
.string
, nlen
);
440 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
444 nlen
= sprintf (buf
, "%p:%lx", abfd
, ELF64_R_SYM (rel
->r_info
));
448 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
455 /* SEC is a section containing relocs for an input BFD when linking; return
456 a suitable section for holding relocs in the output BFD for a link. */
459 get_reloc_section (abfd
, hppa_info
, sec
)
461 struct elf64_hppa_link_hash_table
*hppa_info
;
464 const char *srel_name
;
468 srel_name
= (bfd_elf_string_from_elf_section
469 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
470 elf_section_data(sec
)->rel_hdr
.sh_name
));
471 if (srel_name
== NULL
)
474 BFD_ASSERT ((strncmp (srel_name
, ".rela", 5) == 0
475 && strcmp (bfd_get_section_name (abfd
, sec
),
477 || (strncmp (srel_name
, ".rel", 4) == 0
478 && strcmp (bfd_get_section_name (abfd
, sec
),
481 dynobj
= hppa_info
->root
.dynobj
;
483 hppa_info
->root
.dynobj
= dynobj
= abfd
;
485 srel
= bfd_get_section_by_name (dynobj
, srel_name
);
488 srel
= bfd_make_section (dynobj
, srel_name
);
490 || !bfd_set_section_flags (dynobj
, srel
,
497 || !bfd_set_section_alignment (dynobj
, srel
, 3))
501 hppa_info
->other_rel_sec
= srel
;
505 /* Add a new entry to the list of dynamic relocations against DYN_H.
507 We use this to keep a record of all the FPTR relocations against a
508 particular symbol so that we can create FPTR relocations in the
512 count_dyn_reloc (abfd
, dyn_h
, type
, sec
, sec_symndx
, offset
, addend
)
514 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
521 struct elf64_hppa_dyn_reloc_entry
*rent
;
523 rent
= (struct elf64_hppa_dyn_reloc_entry
*)
524 bfd_alloc (abfd
, sizeof (*rent
));
528 rent
->next
= dyn_h
->reloc_entries
;
531 rent
->sec_symndx
= sec_symndx
;
532 rent
->offset
= offset
;
533 rent
->addend
= addend
;
534 dyn_h
->reloc_entries
= rent
;
539 /* Scan the RELOCS and record the type of dynamic entries that each
540 referenced symbol needs. */
543 elf64_hppa_check_relocs (abfd
, info
, sec
, relocs
)
545 struct bfd_link_info
*info
;
547 const Elf_Internal_Rela
*relocs
;
549 struct elf64_hppa_link_hash_table
*hppa_info
;
550 const Elf_Internal_Rela
*relend
;
551 Elf_Internal_Shdr
*symtab_hdr
;
552 const Elf_Internal_Rela
*rel
;
553 asection
*dlt
, *plt
, *stubs
;
558 if (info
->relocateable
)
561 /* If this is the first dynamic object found in the link, create
562 the special sections required for dynamic linking. */
563 if (! elf_hash_table (info
)->dynamic_sections_created
)
565 if (! bfd_elf64_link_create_dynamic_sections (abfd
, info
))
569 hppa_info
= elf64_hppa_hash_table (info
);
570 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
572 /* If necessary, build a new table holding section symbols indices
573 for this BFD. This is disgusting. */
575 if (info
->shared
&& hppa_info
->section_syms_bfd
!= abfd
)
577 int i
, highest_shndx
;
578 Elf_Internal_Sym
*local_syms
, *isym
;
579 Elf64_External_Sym
*ext_syms
, *esym
;
581 /* We're done with the old cache of section index to section symbol
582 index information. Free it.
584 ?!? Note we leak the last section_syms array. Presumably we
585 could free it in one of the later routines in this file. */
586 if (hppa_info
->section_syms
)
587 free (hppa_info
->section_syms
);
589 /* Allocate memory for the internal and external symbols. */
591 = (Elf_Internal_Sym
*) bfd_malloc (symtab_hdr
->sh_info
592 * sizeof (Elf_Internal_Sym
));
593 if (local_syms
== NULL
)
597 = (Elf64_External_Sym
*) bfd_malloc (symtab_hdr
->sh_info
598 * sizeof (Elf64_External_Sym
));
599 if (ext_syms
== NULL
)
605 /* Read in the local symbols. */
606 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
607 || bfd_read (ext_syms
, 1,
609 * sizeof (Elf64_External_Sym
)), abfd
)
610 != (symtab_hdr
->sh_info
* sizeof (Elf64_External_Sym
)))
617 /* Swap in the local symbols, also record the highest section index
618 referenced by the local symbols. */
622 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++, esym
++, isym
++)
624 bfd_elf64_swap_symbol_in (abfd
, esym
, isym
);
625 if (isym
->st_shndx
> highest_shndx
)
626 highest_shndx
= isym
->st_shndx
;
629 /* Now we can free the external symbols. */
632 /* Allocate an array to hold the section index to section symbol index
633 mapping. Bump by one since we start counting at zero. */
635 hppa_info
->section_syms
= (int *) bfd_malloc (highest_shndx
638 /* Now walk the local symbols again. If we find a section symbol,
639 record the index of the symbol into the section_syms array. */
640 for (isym
= local_syms
, i
= 0; i
< symtab_hdr
->sh_info
; i
++, isym
++)
642 if (ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
643 hppa_info
->section_syms
[isym
->st_shndx
] = i
;
646 /* We are finished with the local symbols. Get rid of them. */
649 /* Record which BFD we built the section_syms mapping for. */
650 hppa_info
->section_syms_bfd
= abfd
;
653 /* Record the symbol index for this input section. We may need it for
654 relocations when building shared libraries. When not building shared
655 libraries this value is never really used, but assign it to zero to
656 prevent out of bounds memory accesses in other routines. */
659 sec_symndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
661 /* If we did not find a section symbol for this section, then
662 something went terribly wrong above. */
663 if (sec_symndx
== -1)
666 sec_symndx
= hppa_info
->section_syms
[sec_symndx
];
671 dlt
= plt
= stubs
= NULL
;
675 relend
= relocs
+ sec
->reloc_count
;
676 for (rel
= relocs
; rel
< relend
; ++rel
)
686 struct elf_link_hash_entry
*h
= NULL
;
687 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
688 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
690 const char *addr_name
;
691 boolean maybe_dynamic
;
692 int dynrel_type
= R_PARISC_NONE
;
693 static reloc_howto_type
*howto
;
695 if (r_symndx
>= symtab_hdr
->sh_info
)
697 /* We're dealing with a global symbol -- find its hash entry
698 and mark it as being referenced. */
699 long indx
= r_symndx
- symtab_hdr
->sh_info
;
700 h
= elf_sym_hashes (abfd
)[indx
];
701 while (h
->root
.type
== bfd_link_hash_indirect
702 || h
->root
.type
== bfd_link_hash_warning
)
703 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
705 h
->elf_link_hash_flags
|= ELF_LINK_HASH_REF_REGULAR
;
708 /* We can only get preliminary data on whether a symbol is
709 locally or externally defined, as not all of the input files
710 have yet been processed. Do something with what we know, as
711 this may help reduce memory usage and processing time later. */
712 maybe_dynamic
= false;
713 if (h
&& ((info
->shared
&& ! info
->symbolic
)
714 || ! (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
715 || h
->root
.type
== bfd_link_hash_defweak
))
716 maybe_dynamic
= true;
718 howto
= elf_hppa_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
722 /* These are simple indirect references to symbols through the
723 DLT. We need to create a DLT entry for any symbols which
724 appears in a DLTIND relocation. */
725 case R_PARISC_DLTIND21L
:
726 case R_PARISC_DLTIND14R
:
727 case R_PARISC_DLTIND14F
:
728 case R_PARISC_DLTIND14WR
:
729 case R_PARISC_DLTIND14DR
:
730 need_entry
= NEED_DLT
;
733 /* ?!? These need a DLT entry. But I have no idea what to do with
734 the "link time TP value. */
735 case R_PARISC_LTOFF_TP21L
:
736 case R_PARISC_LTOFF_TP14R
:
737 case R_PARISC_LTOFF_TP14F
:
738 case R_PARISC_LTOFF_TP64
:
739 case R_PARISC_LTOFF_TP14WR
:
740 case R_PARISC_LTOFF_TP14DR
:
741 case R_PARISC_LTOFF_TP16F
:
742 case R_PARISC_LTOFF_TP16WF
:
743 case R_PARISC_LTOFF_TP16DF
:
744 need_entry
= NEED_DLT
;
747 /* These are function calls. Depending on their precise target we
748 may need to make a stub for them. The stub uses the PLT, so we
749 need to create PLT entries for these symbols too. */
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 (abfd
, 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 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
986 /* Allocate space for a DLT entry. */
989 allocate_global_data_dlt (dyn_h
, data
)
990 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
993 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
997 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1001 /* Possibly add the symbol to the local dynamic symbol
1002 table since we might need to create a dynamic relocation
1005 || (h
&& h
->dynindx
== -1))
1008 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1010 if (!_bfd_elf64_link_record_local_dynamic_symbol
1011 (x
->info
, owner
, dyn_h
->sym_indx
))
1016 dyn_h
->dlt_offset
= x
->ofs
;
1017 x
->ofs
+= DLT_ENTRY_SIZE
;
1022 /* Allocate space for a DLT.PLT entry. */
1025 allocate_global_data_plt (dyn_h
, data
)
1026 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1029 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1032 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1033 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1034 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1035 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1037 dyn_h
->plt_offset
= x
->ofs
;
1038 x
->ofs
+= PLT_ENTRY_SIZE
;
1039 if (dyn_h
->plt_offset
< 0x2000)
1040 elf64_hppa_hash_table (x
->info
)->gp_offset
= dyn_h
->plt_offset
;
1043 dyn_h
->want_plt
= 0;
1048 /* Allocate space for a STUB entry. */
1051 allocate_global_data_stub (dyn_h
, data
)
1052 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1055 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1057 if (dyn_h
->want_stub
1058 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1059 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1060 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1061 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1063 dyn_h
->stub_offset
= x
->ofs
;
1064 x
->ofs
+= sizeof (plt_stub
);
1067 dyn_h
->want_stub
= 0;
1071 /* Allocate space for a FPTR entry. */
1074 allocate_global_data_opd (dyn_h
, data
)
1075 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1078 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1080 if (dyn_h
->want_opd
)
1082 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1085 while (h
->root
.type
== bfd_link_hash_indirect
1086 || h
->root
.type
== bfd_link_hash_warning
)
1087 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1089 /* We never need an opd entry for a symbol which is not
1090 defined by this output file. */
1091 if (h
&& h
->root
.type
== bfd_link_hash_undefined
)
1092 dyn_h
->want_opd
= 0;
1094 /* If we are creating a shared library, took the address of a local
1095 function or might export this function from this object file, then
1096 we have to create an opd descriptor. */
1097 else if (x
->info
->shared
1100 || ((h
->root
.type
== bfd_link_hash_defined
1101 || h
->root
.type
== bfd_link_hash_defweak
)
1102 && h
->root
.u
.def
.section
->output_section
!= NULL
))
1104 /* If we are creating a shared library, then we will have to
1105 create a runtime relocation for the symbol to properly
1106 initialize the .opd entry. Make sure the symbol gets
1107 added to the dynamic symbol table. */
1109 && (h
== NULL
|| (h
->dynindx
== -1)))
1112 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1114 if (!_bfd_elf64_link_record_local_dynamic_symbol
1115 (x
->info
, owner
, dyn_h
->sym_indx
))
1119 /* This may not be necessary or desirable anymore now that
1120 we have some support for dealing with section symbols
1121 in dynamic relocs. But name munging does make the result
1122 much easier to debug. ie, the EPLT reloc will reference
1123 a symbol like .foobar, instead of .text + offset. */
1124 if (x
->info
->shared
&& h
)
1127 struct elf_link_hash_entry
*nh
;
1129 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
1131 strcpy (new_name
+ 1, h
->root
.root
.string
);
1133 nh
= elf_link_hash_lookup (elf_hash_table (x
->info
),
1134 new_name
, true, true, true);
1136 nh
->root
.type
= h
->root
.type
;
1137 nh
->root
.u
.def
.value
= h
->root
.u
.def
.value
;
1138 nh
->root
.u
.def
.section
= h
->root
.u
.def
.section
;
1140 if (! bfd_elf64_link_record_dynamic_symbol (x
->info
, nh
))
1144 dyn_h
->opd_offset
= x
->ofs
;
1145 x
->ofs
+= OPD_ENTRY_SIZE
;
1148 /* Otherwise we do not need an opd entry. */
1150 dyn_h
->want_opd
= 0;
1155 /* HP requires the EI_OSABI field to be filled in. The assignment to
1156 EI_ABIVERSION may not be strictly necessary. */
1159 elf64_hppa_post_process_headers (abfd
, link_info
)
1161 struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
;
1163 Elf_Internal_Ehdr
* i_ehdrp
;
1165 i_ehdrp
= elf_elfheader (abfd
);
1167 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
1168 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
1171 /* Create function descriptor section (.opd). This section is called .opd
1172 because it contains "official prodecure descriptors". The "official"
1173 refers to the fact that these descriptors are used when taking the address
1174 of a procedure, thus ensuring a unique address for each procedure. */
1177 get_opd (abfd
, info
, hppa_info
)
1179 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1180 struct elf64_hppa_link_hash_table
*hppa_info
;
1185 opd
= hppa_info
->opd_sec
;
1188 dynobj
= hppa_info
->root
.dynobj
;
1190 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1192 opd
= bfd_make_section (dynobj
, ".opd");
1194 || !bfd_set_section_flags (dynobj
, opd
,
1199 | SEC_LINKER_CREATED
))
1200 || !bfd_set_section_alignment (abfd
, opd
, 3))
1206 hppa_info
->opd_sec
= opd
;
1212 /* Create the PLT section. */
1215 get_plt (abfd
, info
, hppa_info
)
1217 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1218 struct elf64_hppa_link_hash_table
*hppa_info
;
1223 plt
= hppa_info
->plt_sec
;
1226 dynobj
= hppa_info
->root
.dynobj
;
1228 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1230 plt
= bfd_make_section (dynobj
, ".plt");
1232 || !bfd_set_section_flags (dynobj
, plt
,
1237 | SEC_LINKER_CREATED
))
1238 || !bfd_set_section_alignment (abfd
, plt
, 3))
1244 hppa_info
->plt_sec
= plt
;
1250 /* Create the DLT section. */
1253 get_dlt (abfd
, info
, hppa_info
)
1255 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1256 struct elf64_hppa_link_hash_table
*hppa_info
;
1261 dlt
= hppa_info
->dlt_sec
;
1264 dynobj
= hppa_info
->root
.dynobj
;
1266 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1268 dlt
= bfd_make_section (dynobj
, ".dlt");
1270 || !bfd_set_section_flags (dynobj
, dlt
,
1275 | SEC_LINKER_CREATED
))
1276 || !bfd_set_section_alignment (abfd
, dlt
, 3))
1282 hppa_info
->dlt_sec
= dlt
;
1288 /* Create the stubs section. */
1291 get_stub (abfd
, info
, hppa_info
)
1293 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1294 struct elf64_hppa_link_hash_table
*hppa_info
;
1299 stub
= hppa_info
->stub_sec
;
1302 dynobj
= hppa_info
->root
.dynobj
;
1304 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1306 stub
= bfd_make_section (dynobj
, ".stub");
1308 || !bfd_set_section_flags (dynobj
, stub
,
1314 | SEC_LINKER_CREATED
))
1315 || !bfd_set_section_alignment (abfd
, stub
, 3))
1321 hppa_info
->stub_sec
= stub
;
1327 /* Create sections necessary for dynamic linking. This is only a rough
1328 cut and will likely change as we learn more about the somewhat
1329 unusual dynamic linking scheme HP uses.
1332 Contains code to implement cross-space calls. The first time one
1333 of the stubs is used it will call into the dynamic linker, later
1334 calls will go straight to the target.
1336 The only stub we support right now looks like
1340 ldd OFFSET+8(%dp),%dp
1342 Other stubs may be needed in the future. We may want the remove
1343 the break/nop instruction. It is only used right now to keep the
1344 offset of a .plt entry and a .stub entry in sync.
1347 This is what most people call the .got. HP used a different name.
1351 Relocations for the DLT.
1354 Function pointers as address,gp pairs.
1357 Should contain dynamic IPLT (and EPLT?) relocations.
1363 EPLT relocations for symbols exported from shared libraries. */
1366 elf64_hppa_create_dynamic_sections (abfd
, info
)
1368 struct bfd_link_info
*info
;
1372 if (! get_stub (abfd
, info
, elf64_hppa_hash_table (info
)))
1375 if (! get_dlt (abfd
, info
, elf64_hppa_hash_table (info
)))
1378 if (! get_plt (abfd
, info
, elf64_hppa_hash_table (info
)))
1381 if (! get_opd (abfd
, info
, elf64_hppa_hash_table (info
)))
1384 s
= bfd_make_section(abfd
, ".rela.dlt");
1386 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1390 | SEC_LINKER_CREATED
))
1391 || !bfd_set_section_alignment (abfd
, s
, 3))
1393 elf64_hppa_hash_table (info
)->dlt_rel_sec
= s
;
1395 s
= bfd_make_section(abfd
, ".rela.plt");
1397 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1401 | SEC_LINKER_CREATED
))
1402 || !bfd_set_section_alignment (abfd
, s
, 3))
1404 elf64_hppa_hash_table (info
)->plt_rel_sec
= s
;
1406 s
= bfd_make_section(abfd
, ".rela.data");
1408 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1412 | SEC_LINKER_CREATED
))
1413 || !bfd_set_section_alignment (abfd
, s
, 3))
1415 elf64_hppa_hash_table (info
)->other_rel_sec
= s
;
1417 s
= bfd_make_section(abfd
, ".rela.opd");
1419 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1423 | SEC_LINKER_CREATED
))
1424 || !bfd_set_section_alignment (abfd
, s
, 3))
1426 elf64_hppa_hash_table (info
)->opd_rel_sec
= s
;
1431 /* Allocate dynamic relocations for those symbols that turned out
1435 allocate_dynrel_entries (dyn_h
, data
)
1436 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1439 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1440 struct elf64_hppa_link_hash_table
*hppa_info
;
1441 struct elf64_hppa_dyn_reloc_entry
*rent
;
1442 boolean dynamic_symbol
, shared
;
1444 hppa_info
= elf64_hppa_hash_table (x
->info
);
1445 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
);
1446 shared
= x
->info
->shared
;
1448 /* We may need to allocate relocations for a non-dynamic symbol
1449 when creating a shared library. */
1450 if (!dynamic_symbol
&& !shared
)
1453 /* Take care of the normal data relocations. */
1455 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
1459 case R_PARISC_FPTR64
:
1460 /* Allocate one iff we are not building a shared library and
1461 !want_opd, which by this point will be true only if we're
1462 actually allocating one statically in the main executable. */
1463 if (!x
->info
->shared
&& dyn_h
->want_opd
)
1467 hppa_info
->other_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1469 /* Make sure this symbol gets into the dynamic symbol table if it is
1470 not already recorded. ?!? This should not be in the loop since
1471 the symbol need only be added once. */
1472 if (dyn_h
->h
== 0 || dyn_h
->h
->dynindx
== -1)
1473 if (!_bfd_elf64_link_record_local_dynamic_symbol
1474 (x
->info
, rent
->sec
->owner
, dyn_h
->sym_indx
))
1478 /* Take care of the GOT and PLT relocations. */
1480 if ((dynamic_symbol
|| shared
) && dyn_h
->want_dlt
)
1481 hppa_info
->dlt_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1483 /* If we are building a shared library, then every symbol that has an
1484 opd entry will need an EPLT relocation to relocate the symbol's address
1485 and __gp value based on the runtime load address. */
1486 if (shared
&& dyn_h
->want_opd
)
1487 hppa_info
->opd_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1489 if (dyn_h
->want_plt
&& dynamic_symbol
)
1491 bfd_size_type t
= 0;
1493 /* Dynamic symbols get one IPLT relocation. Local symbols in
1494 shared libraries get two REL relocations. Local symbols in
1495 main applications get nothing. */
1497 t
= sizeof (Elf64_External_Rela
);
1499 t
= 2 * sizeof (Elf64_External_Rela
);
1501 hppa_info
->plt_rel_sec
->_raw_size
+= t
;
1507 /* Adjust a symbol defined by a dynamic object and referenced by a
1511 elf64_hppa_adjust_dynamic_symbol (info
, h
)
1512 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1513 struct elf_link_hash_entry
*h
;
1515 /* ??? Undefined symbols with PLT entries should be re-defined
1516 to be the PLT entry. */
1518 /* If this is a weak symbol, and there is a real definition, the
1519 processor independent code will have arranged for us to see the
1520 real definition first, and we can just use the same value. */
1521 if (h
->weakdef
!= NULL
)
1523 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1524 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1525 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1526 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1530 /* If this is a reference to a symbol defined by a dynamic object which
1531 is not a function, we might allocate the symbol in our .dynbss section
1532 and allocate a COPY dynamic relocation.
1534 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1540 /* Set the final sizes of the dynamic sections and allocate memory for
1541 the contents of our special sections. */
1544 elf64_hppa_size_dynamic_sections (output_bfd
, info
)
1546 struct bfd_link_info
*info
;
1553 struct elf64_hppa_allocate_data data
;
1554 struct elf64_hppa_link_hash_table
*hppa_info
;
1556 hppa_info
= elf64_hppa_hash_table (info
);
1558 dynobj
= elf_hash_table (info
)->dynobj
;
1559 BFD_ASSERT (dynobj
!= NULL
);
1561 if (elf_hash_table (info
)->dynamic_sections_created
)
1563 /* Set the contents of the .interp section to the interpreter. */
1566 s
= bfd_get_section_by_name (dynobj
, ".interp");
1567 BFD_ASSERT (s
!= NULL
);
1568 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1569 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1574 /* We may have created entries in the .rela.got section.
1575 However, if we are not creating the dynamic sections, we will
1576 not actually use these entries. Reset the size of .rela.dlt,
1577 which will cause it to get stripped from the output file
1579 s
= bfd_get_section_by_name (dynobj
, ".rela.dlt");
1584 /* Allocate the GOT entries. */
1587 if (elf64_hppa_hash_table (info
)->dlt_sec
)
1590 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1591 allocate_global_data_dlt
, &data
);
1592 hppa_info
->dlt_sec
->_raw_size
= data
.ofs
;
1595 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1596 allocate_global_data_plt
, &data
);
1597 hppa_info
->plt_sec
->_raw_size
= data
.ofs
;
1600 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1601 allocate_global_data_stub
, &data
);
1602 hppa_info
->stub_sec
->_raw_size
= data
.ofs
;
1605 /* Mark each function this program exports so that we will allocate
1606 space in the .opd section for each function's FPTR.
1608 We have to traverse the main linker hash table since we have to
1609 find functions which may not have been mentioned in any relocs. */
1610 elf_link_hash_traverse (elf_hash_table (info
),
1611 elf64_hppa_mark_exported_functions
,
1614 /* Allocate space for entries in the .opd section. */
1615 if (elf64_hppa_hash_table (info
)->opd_sec
)
1618 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1619 allocate_global_data_opd
, &data
);
1620 hppa_info
->opd_sec
->_raw_size
= data
.ofs
;
1623 /* Now allocate space for dynamic relocations, if necessary. */
1624 if (hppa_info
->root
.dynamic_sections_created
)
1625 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1626 allocate_dynrel_entries
, &data
);
1628 /* The sizes of all the sections are set. Allocate memory for them. */
1632 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1637 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1640 /* It's OK to base decisions on the section name, because none
1641 of the dynobj section names depend upon the input files. */
1642 name
= bfd_get_section_name (dynobj
, s
);
1646 if (strcmp (name
, ".plt") == 0)
1648 if (s
->_raw_size
== 0)
1650 /* Strip this section if we don't need it; see the
1656 /* Remember whether there is a PLT. */
1660 else if (strcmp (name
, ".dlt") == 0)
1662 if (s
->_raw_size
== 0)
1664 /* Strip this section if we don't need it; see the
1669 else if (strcmp (name
, ".opd") == 0)
1671 if (s
->_raw_size
== 0)
1673 /* Strip this section if we don't need it; see the
1678 else if (strncmp (name
, ".rela", 4) == 0)
1680 if (s
->_raw_size
== 0)
1682 /* If we don't need this section, strip it from the
1683 output file. This is mostly to handle .rela.bss and
1684 .rela.plt. We must create both sections in
1685 create_dynamic_sections, because they must be created
1686 before the linker maps input sections to output
1687 sections. The linker does that before
1688 adjust_dynamic_symbol is called, and it is that
1689 function which decides whether anything needs to go
1690 into these sections. */
1697 /* Remember whether there are any reloc sections other
1699 if (strcmp (name
, ".rela.plt") != 0)
1701 const char *outname
;
1705 /* If this relocation section applies to a read only
1706 section, then we probably need a DT_TEXTREL
1707 entry. The entries in the .rela.plt section
1708 really apply to the .got section, which we
1709 created ourselves and so know is not readonly. */
1710 outname
= bfd_get_section_name (output_bfd
,
1712 target
= bfd_get_section_by_name (output_bfd
, outname
+ 4);
1714 && (target
->flags
& SEC_READONLY
) != 0
1715 && (target
->flags
& SEC_ALLOC
) != 0)
1719 /* We use the reloc_count field as a counter if we need
1720 to copy relocs into the output file. */
1724 else if (strncmp (name
, ".dlt", 4) != 0
1725 && strcmp (name
, ".stub") != 0
1726 && strcmp (name
, ".got") != 0)
1728 /* It's not one of our sections, so don't allocate space. */
1734 _bfd_strip_section_from_output (info
, s
);
1738 /* Allocate memory for the section contents if it has not
1739 been allocated already. */
1740 if (s
->contents
== NULL
)
1742 s
->contents
= (bfd_byte
*) bfd_alloc (dynobj
, s
->_raw_size
);
1743 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1748 if (elf_hash_table (info
)->dynamic_sections_created
)
1750 /* Always create a DT_PLTGOT. It actually has nothing to do with
1751 the PLT, it is how we communicate the __gp value of a load
1752 module to the dynamic linker. */
1753 if (! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_FLAGS
, 0)
1754 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTGOT
, 0))
1757 /* Add some entries to the .dynamic section. We fill in the
1758 values later, in elf64_hppa_finish_dynamic_sections, but we
1759 must add the entries now so that we get the correct size for
1760 the .dynamic section. The DT_DEBUG entry is filled in by the
1761 dynamic linker and used by the debugger. */
1764 if (! bfd_elf64_add_dynamic_entry (info
, DT_DEBUG
, 0)
1765 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_HOOK
, 0)
1766 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_LOAD_MAP
, 0))
1772 if (! bfd_elf64_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
1773 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
1774 || ! bfd_elf64_add_dynamic_entry (info
, DT_JMPREL
, 0))
1780 if (! bfd_elf64_add_dynamic_entry (info
, DT_RELA
, 0)
1781 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELASZ
, 0)
1782 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELAENT
,
1783 sizeof (Elf64_External_Rela
)))
1789 if (! bfd_elf64_add_dynamic_entry (info
, DT_TEXTREL
, 0))
1797 /* Called after we have output the symbol into the dynamic symbol
1798 table, but before we output the symbol into the normal symbol
1801 For some symbols we had to change their address when outputting
1802 the dynamic symbol table. We undo that change here so that
1803 the symbols have their expected value in the normal symbol
1807 elf64_hppa_link_output_symbol_hook (abfd
, info
, name
, sym
, input_sec
)
1808 bfd
*abfd ATTRIBUTE_UNUSED
;
1809 struct bfd_link_info
*info
;
1811 Elf_Internal_Sym
*sym
;
1812 asection
*input_sec ATTRIBUTE_UNUSED
;
1814 struct elf64_hppa_link_hash_table
*hppa_info
;
1815 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1817 /* We may be called with the file symbol or section symbols.
1818 They never need munging, so it is safe to ignore them. */
1822 /* Get the PA dyn_symbol (if any) associated with NAME. */
1823 hppa_info
= elf64_hppa_hash_table (info
);
1824 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1825 name
, false, false);
1827 /* Function symbols for which we created .opd entries were munged
1828 by finish_dynamic_symbol and have to be un-munged here. */
1829 if (dyn_h
&& dyn_h
->want_opd
)
1831 /* Restore the saved value and section index. */
1832 sym
->st_value
= dyn_h
->st_value
;
1833 sym
->st_shndx
= dyn_h
->st_shndx
;
1839 /* Finish up dynamic symbol handling. We set the contents of various
1840 dynamic sections here. */
1843 elf64_hppa_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1845 struct bfd_link_info
*info
;
1846 struct elf_link_hash_entry
*h
;
1847 Elf_Internal_Sym
*sym
;
1849 asection
*stub
, *splt
, *sdlt
, *sopd
, *spltrel
, *sdltrel
;
1850 struct elf64_hppa_link_hash_table
*hppa_info
;
1851 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1853 hppa_info
= elf64_hppa_hash_table (info
);
1854 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1855 h
->root
.root
.string
, false, false);
1857 stub
= hppa_info
->stub_sec
;
1858 splt
= hppa_info
->plt_sec
;
1859 sdlt
= hppa_info
->dlt_sec
;
1860 sopd
= hppa_info
->opd_sec
;
1861 spltrel
= hppa_info
->plt_rel_sec
;
1862 sdltrel
= hppa_info
->dlt_rel_sec
;
1864 BFD_ASSERT (stub
!= NULL
&& splt
!= NULL
1865 && sopd
!= NULL
&& sdlt
!= NULL
)
1867 /* Incredible. It is actually necessary to NOT use the symbol's real
1868 value when building the dynamic symbol table for a shared library.
1869 At least for symbols that refer to functions.
1871 We will store a new value and section index into the symbol long
1872 enough to output it into the dynamic symbol table, then we restore
1873 the original values (in elf64_hppa_link_output_symbol_hook). */
1874 if (dyn_h
&& dyn_h
->want_opd
)
1876 /* Save away the original value and section index so that we
1877 can restore them later. */
1878 dyn_h
->st_value
= sym
->st_value
;
1879 dyn_h
->st_shndx
= sym
->st_shndx
;
1881 /* For the dynamic symbol table entry, we want the value to be
1882 address of this symbol's entry within the .opd section. */
1883 sym
->st_value
= (dyn_h
->opd_offset
1884 + sopd
->output_offset
1885 + sopd
->output_section
->vma
);
1886 sym
->st_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
1887 sopd
->output_section
);
1890 /* Initialize a .plt entry if requested. */
1891 if (dyn_h
&& dyn_h
->want_plt
1892 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1895 Elf_Internal_Rela rel
;
1897 /* We do not actually care about the value in the PLT entry
1898 if we are creating a shared library and the symbol is
1899 still undefined, we create a dynamic relocation to fill
1900 in the correct value. */
1901 if (info
->shared
&& h
->root
.type
== bfd_link_hash_undefined
)
1904 value
= (h
->root
.u
.def
.value
+ h
->root
.u
.def
.section
->vma
);
1906 /* Fill in the entry in the procedure linkage table.
1908 The format of a plt entry is
1911 plt_offset is the offset within the PLT section at which to
1912 install the PLT entry.
1914 We are modifying the in-memory PLT contents here, so we do not add
1915 in the output_offset of the PLT section. */
1917 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
);
1918 value
= _bfd_get_gp_value (splt
->output_section
->owner
);
1919 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
+ 0x8);
1921 /* Create a dynamic IPLT relocation for this entry.
1923 We are creating a relocation in the output file's PLT section,
1924 which is included within the DLT secton. So we do need to include
1925 the PLT's output_offset in the computation of the relocation's
1927 rel
.r_offset
= (dyn_h
->plt_offset
+ splt
->output_offset
1928 + splt
->output_section
->vma
);
1929 rel
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
1932 bfd_elf64_swap_reloca_out (splt
->output_section
->owner
, &rel
,
1933 (((Elf64_External_Rela
*)
1935 + spltrel
->reloc_count
));
1936 spltrel
->reloc_count
++;
1939 /* Initialize an external call stub entry if requested. */
1940 if (dyn_h
&& dyn_h
->want_stub
1941 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1946 /* Install the generic stub template.
1948 We are modifying the contents of the stub section, so we do not
1949 need to include the stub section's output_offset here. */
1950 memcpy (stub
->contents
+ dyn_h
->stub_offset
, plt_stub
, sizeof (plt_stub
));
1952 /* Fix up the first ldd instruction.
1954 We are modifying the contents of the STUB section in memory,
1955 so we do not need to include its output offset in this computation.
1957 Note the plt_offset value is the value of the PLT entry relative to
1958 the start of the PLT section. These instructions will reference
1959 data relative to the value of __gp, which may not necessarily have
1960 the same address as the start of the PLT section.
1962 gp_offset contains the offset of __gp within the PLT section. */
1963 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
;
1965 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
);
1967 insn
|= ((value
& 0x2000) >> 13);
1970 bfd_put_32 (stub
->owner
, (insn
| value
),
1971 stub
->contents
+ dyn_h
->stub_offset
);
1973 /* Fix up the second ldd instruction. */
1974 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
+ 8;
1976 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
+ 8);
1978 insn
|= ((value
& 0x2000) >> 13);
1981 bfd_put_32 (stub
->owner
, (insn
| value
),
1982 stub
->contents
+ dyn_h
->stub_offset
+ 8);
1985 /* Millicode symbols should not be put in the dynamic
1986 symbol table under any circumstances. */
1987 if (ELF_ST_TYPE (sym
->st_info
) == STT_PARISC_MILLI
)
1993 /* The .opd section contains FPTRs for each function this file
1994 exports. Initialize the FPTR entries. */
1997 elf64_hppa_finalize_opd (dyn_h
, data
)
1998 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2001 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2002 struct elf64_hppa_link_hash_table
*hppa_info
;
2003 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2007 hppa_info
= elf64_hppa_hash_table (info
);
2008 sopd
= hppa_info
->opd_sec
;
2009 sopdrel
= hppa_info
->opd_rel_sec
;
2011 if (h
&& dyn_h
&& dyn_h
->want_opd
)
2015 /* The first two words of an .opd entry are zero.
2017 We are modifying the contents of the OPD section in memory, so we
2018 do not need to include its output offset in this computation. */
2019 memset (sopd
->contents
+ dyn_h
->opd_offset
, 0, 16);
2021 value
= (h
->root
.u
.def
.value
2022 + h
->root
.u
.def
.section
->output_section
->vma
2023 + h
->root
.u
.def
.section
->output_offset
);
2025 /* The next word is the address of the function. */
2026 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 16);
2028 /* The last word is our local __gp value. */
2029 value
= _bfd_get_gp_value (sopd
->output_section
->owner
);
2030 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 24);
2033 /* If we are generating a shared library, we must generate EPLT relocations
2034 for each entry in the .opd, even for static functions (they may have
2035 had their address taken). */
2036 if (info
->shared
&& dyn_h
&& dyn_h
->want_opd
)
2038 Elf64_Internal_Rela rel
;
2041 /* We may need to do a relocation against a local symbol, in
2042 which case we have to look up it's dynamic symbol index off
2043 the local symbol hash table. */
2044 if (h
&& h
->dynindx
!= -1)
2045 dynindx
= h
->dynindx
;
2048 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2051 /* The offset of this relocation is the absolute address of the
2052 .opd entry for this symbol. */
2053 rel
.r_offset
= (dyn_h
->opd_offset
+ sopd
->output_offset
2054 + sopd
->output_section
->vma
);
2056 /* If H is non-null, then we have an external symbol.
2058 It is imperative that we use a different dynamic symbol for the
2059 EPLT relocation if the symbol has global scope.
2061 In the dynamic symbol table, the function symbol will have a value
2062 which is address of the function's .opd entry.
2064 Thus, we can not use that dynamic symbol for the EPLT relocation
2065 (if we did, the data in the .opd would reference itself rather
2066 than the actual address of the function). Instead we have to use
2067 a new dynamic symbol which has the same value as the original global
2070 We prefix the original symbol with a "." and use the new symbol in
2071 the EPLT relocation. This new symbol has already been recorded in
2072 the symbol table, we just have to look it up and use it.
2074 We do not have such problems with static functions because we do
2075 not make their addresses in the dynamic symbol table point to
2076 the .opd entry. Ultimately this should be safe since a static
2077 function can not be directly referenced outside of its shared
2080 We do have to play similar games for FPTR relocations in shared
2081 libraries, including those for static symbols. See the FPTR
2082 handling in elf64_hppa_finalize_dynreloc. */
2086 struct elf_link_hash_entry
*nh
;
2088 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
2090 strcpy (new_name
+ 1, h
->root
.root
.string
);
2092 nh
= elf_link_hash_lookup (elf_hash_table (info
),
2093 new_name
, false, false, false);
2095 /* All we really want from the new symbol is its dynamic
2097 dynindx
= nh
->dynindx
;
2101 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_EPLT
);
2103 bfd_elf64_swap_reloca_out (sopd
->output_section
->owner
, &rel
,
2104 (((Elf64_External_Rela
*)
2106 + sopdrel
->reloc_count
));
2107 sopdrel
->reloc_count
++;
2112 /* The .dlt section contains addresses for items referenced through the
2113 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2114 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2117 elf64_hppa_finalize_dlt (dyn_h
, data
)
2118 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2121 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2122 struct elf64_hppa_link_hash_table
*hppa_info
;
2123 asection
*sdlt
, *sdltrel
;
2124 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2126 hppa_info
= elf64_hppa_hash_table (info
);
2128 sdlt
= hppa_info
->dlt_sec
;
2129 sdltrel
= hppa_info
->dlt_rel_sec
;
2131 /* H/DYN_H may refer to a local variable and we know it's
2132 address, so there is no need to create a relocation. Just install
2133 the proper value into the DLT, note this shortcut can not be
2134 skipped when building a shared library. */
2135 if (! info
->shared
&& h
&& dyn_h
&& dyn_h
->want_dlt
)
2139 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2140 to point to the FPTR entry in the .opd section.
2142 We include the OPD's output offset in this computation as
2143 we are referring to an absolute address in the resulting
2145 if (dyn_h
->want_opd
)
2147 value
= (dyn_h
->opd_offset
2148 + hppa_info
->opd_sec
->output_offset
2149 + hppa_info
->opd_sec
->output_section
->vma
);
2153 value
= (h
->root
.u
.def
.value
2154 + h
->root
.u
.def
.section
->output_offset
);
2156 if (h
->root
.u
.def
.section
->output_section
)
2157 value
+= h
->root
.u
.def
.section
->output_section
->vma
;
2159 value
+= h
->root
.u
.def
.section
->vma
;
2162 /* We do not need to include the output offset of the DLT section
2163 here because we are modifying the in-memory contents. */
2164 bfd_put_64 (sdlt
->owner
, value
, sdlt
->contents
+ dyn_h
->dlt_offset
);
2167 /* Create a relocation for the DLT entry assocated with this symbol.
2168 When building a shared library the symbol does not have to be dynamic. */
2170 && (elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
) || info
->shared
))
2172 Elf64_Internal_Rela rel
;
2175 /* We may need to do a relocation against a local symbol, in
2176 which case we have to look up it's dynamic symbol index off
2177 the local symbol hash table. */
2178 if (h
&& h
->dynindx
!= -1)
2179 dynindx
= h
->dynindx
;
2182 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2186 /* Create a dynamic relocation for this entry. Do include the output
2187 offset of the DLT entry since we need an absolute address in the
2188 resulting object file. */
2189 rel
.r_offset
= (dyn_h
->dlt_offset
+ sdlt
->output_offset
2190 + sdlt
->output_section
->vma
);
2191 if (h
&& h
->type
== STT_FUNC
)
2192 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_FPTR64
);
2194 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_DIR64
);
2197 bfd_elf64_swap_reloca_out (sdlt
->output_section
->owner
, &rel
,
2198 (((Elf64_External_Rela
*)
2200 + sdltrel
->reloc_count
));
2201 sdltrel
->reloc_count
++;
2206 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2207 for dynamic functions used to initialize static data. */
2210 elf64_hppa_finalize_dynreloc (dyn_h
, data
)
2211 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2214 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2215 struct elf64_hppa_link_hash_table
*hppa_info
;
2216 struct elf_link_hash_entry
*h
;
2219 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
);
2221 if (!dynamic_symbol
&& !info
->shared
)
2224 if (dyn_h
->reloc_entries
)
2226 struct elf64_hppa_dyn_reloc_entry
*rent
;
2229 hppa_info
= elf64_hppa_hash_table (info
);
2232 /* We may need to do a relocation against a local symbol, in
2233 which case we have to look up it's dynamic symbol index off
2234 the local symbol hash table. */
2235 if (h
&& h
->dynindx
!= -1)
2236 dynindx
= h
->dynindx
;
2239 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2242 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
2244 Elf64_Internal_Rela rel
;
2248 case R_PARISC_FPTR64
:
2249 /* Allocate one iff we are not building a shared library and
2250 !want_opd, which by this point will be true only if we're
2251 actually allocating one statically in the main executable. */
2252 if (!info
->shared
&& dyn_h
->want_opd
)
2257 /* Create a dynamic relocation for this entry.
2259 We need the output offset for the reloc's section because
2260 we are creating an absolute address in the resulting object
2262 rel
.r_offset
= (rent
->offset
+ rent
->sec
->output_offset
2263 + rent
->sec
->output_section
->vma
);
2265 /* An FPTR64 relocation implies that we took the address of
2266 a function and that the function has an entry in the .opd
2267 section. We want the FPTR64 relocation to reference the
2270 We could munge the symbol value in the dynamic symbol table
2271 (in fact we already do for functions with global scope) to point
2272 to the .opd entry. Then we could use that dynamic symbol in
2275 Or we could do something sensible, not munge the symbol's
2276 address and instead just use a different symbol to reference
2277 the .opd entry. At least that seems sensible until you
2278 realize there's no local dynamic symbols we can use for that
2279 purpose. Thus the hair in the check_relocs routine.
2281 We use a section symbol recorded by check_relocs as the
2282 base symbol for the relocation. The addend is the difference
2283 between the section symbol and the address of the .opd entry. */
2284 if (info
->shared
&& rent
->type
== R_PARISC_FPTR64
)
2286 bfd_vma value
, value2
;
2288 /* First compute the address of the opd entry for this symbol. */
2289 value
= (dyn_h
->opd_offset
2290 + hppa_info
->opd_sec
->output_section
->vma
2291 + hppa_info
->opd_sec
->output_offset
);
2293 /* Compute the value of the start of the section with
2295 value2
= (rent
->sec
->output_section
->vma
2296 + rent
->sec
->output_offset
);
2298 /* Compute the difference between the start of the section
2299 with the relocation and the opd entry. */
2302 /* The result becomes the addend of the relocation. */
2303 rel
.r_addend
= value
;
2305 /* The section symbol becomes the symbol for the dynamic
2308 = _bfd_elf_link_lookup_local_dynindx (info
,
2313 rel
.r_addend
= rent
->addend
;
2315 rel
.r_info
= ELF64_R_INFO (dynindx
, rent
->type
);
2317 bfd_elf64_swap_reloca_out (hppa_info
->other_rel_sec
->output_section
->owner
,
2319 (((Elf64_External_Rela
*)
2320 hppa_info
->other_rel_sec
->contents
)
2321 + hppa_info
->other_rel_sec
->reloc_count
));
2322 hppa_info
->other_rel_sec
->reloc_count
++;
2329 /* Finish up the dynamic sections. */
2332 elf64_hppa_finish_dynamic_sections (output_bfd
, info
)
2334 struct bfd_link_info
*info
;
2338 struct elf64_hppa_link_hash_table
*hppa_info
;
2340 hppa_info
= elf64_hppa_hash_table (info
);
2342 /* Finalize the contents of the .opd section. */
2343 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2344 elf64_hppa_finalize_opd
,
2347 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2348 elf64_hppa_finalize_dynreloc
,
2351 /* Finalize the contents of the .dlt section. */
2352 dynobj
= elf_hash_table (info
)->dynobj
;
2353 /* Finalize the contents of the .dlt section. */
2354 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2355 elf64_hppa_finalize_dlt
,
2359 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2361 if (elf_hash_table (info
)->dynamic_sections_created
)
2363 Elf64_External_Dyn
*dyncon
, *dynconend
;
2365 BFD_ASSERT (sdyn
!= NULL
);
2367 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2368 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2369 for (; dyncon
< dynconend
; dyncon
++)
2371 Elf_Internal_Dyn dyn
;
2374 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2381 case DT_HP_LOAD_MAP
:
2382 /* Compute the absolute address of 16byte scratchpad area
2383 for the dynamic linker.
2385 By convention the linker script will allocate the scratchpad
2386 area at the start of the .data section. So all we have to
2387 to is find the start of the .data section. */
2388 s
= bfd_get_section_by_name (output_bfd
, ".data");
2389 dyn
.d_un
.d_ptr
= s
->vma
;
2390 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2394 /* HP's use PLTGOT to set the GOT register. */
2395 dyn
.d_un
.d_ptr
= _bfd_get_gp_value (output_bfd
);
2396 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2400 s
= hppa_info
->plt_rel_sec
;
2401 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2402 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2406 s
= hppa_info
->plt_rel_sec
;
2407 dyn
.d_un
.d_val
= s
->_raw_size
;
2408 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2412 s
= hppa_info
->other_rel_sec
;
2414 s
= hppa_info
->dlt_rel_sec
;
2415 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2416 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2420 s
= hppa_info
->other_rel_sec
;
2421 dyn
.d_un
.d_val
= s
->_raw_size
;
2422 s
= hppa_info
->dlt_rel_sec
;
2423 dyn
.d_un
.d_val
+= s
->_raw_size
;
2424 s
= hppa_info
->opd_rel_sec
;
2425 dyn
.d_un
.d_val
+= s
->_raw_size
;
2426 /* There is some question about whether or not the size of
2427 the PLT relocs should be included here. HP's tools do
2428 it, so we'll emulate them. */
2429 s
= hppa_info
->plt_rel_sec
;
2430 dyn
.d_un
.d_val
+= s
->_raw_size
;
2431 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2442 /* Return the number of additional phdrs we will need.
2444 The generic ELF code only creates PT_PHDRs for executables. The HP
2445 dynamic linker requires PT_PHDRs for dynamic libraries too.
2447 This routine indicates that the backend needs one additional program
2448 header for that case.
2450 Note we do not have access to the link info structure here, so we have
2451 to guess whether or not we are building a shared library based on the
2452 existence of a .interp section. */
2455 elf64_hppa_additional_program_headers (abfd
)
2460 /* If we are creating a shared library, then we have to create a
2461 PT_PHDR segment. HP's dynamic linker chokes without it. */
2462 s
= bfd_get_section_by_name (abfd
, ".interp");
2468 /* Allocate and initialize any program headers required by this
2471 The generic ELF code only creates PT_PHDRs for executables. The HP
2472 dynamic linker requires PT_PHDRs for dynamic libraries too.
2474 This allocates the PT_PHDR and initializes it in a manner suitable
2477 Note we do not have access to the link info structure here, so we have
2478 to guess whether or not we are building a shared library based on the
2479 existence of a .interp section. */
2482 elf64_hppa_modify_segment_map (abfd
)
2485 struct elf_segment_map
*m
;
2488 s
= bfd_get_section_by_name (abfd
, ".interp");
2491 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2492 if (m
->p_type
== PT_PHDR
)
2496 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, sizeof *m
);
2500 m
->p_type
= PT_PHDR
;
2501 m
->p_flags
= PF_R
| PF_X
;
2502 m
->p_flags_valid
= 1;
2503 m
->p_paddr_valid
= 1;
2504 m
->includes_phdrs
= 1;
2506 m
->next
= elf_tdata (abfd
)->segment_map
;
2507 elf_tdata (abfd
)->segment_map
= m
;
2511 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2512 if (m
->p_type
== PT_LOAD
)
2516 for (i
= 0; i
< m
->count
; i
++)
2518 /* The code "hint" is not really a hint. It is a requirement
2519 for certain versions of the HP dynamic linker. Worse yet,
2520 it must be set even if the shared library does not have
2521 any code in its "text" segment (thus the check for .hash
2522 to catch this situation). */
2523 if (m
->sections
[i
]->flags
& SEC_CODE
2524 || (strcmp (m
->sections
[i
]->name
, ".hash") == 0))
2525 m
->p_flags
|= (PF_X
| PF_HP_CODE
);
2532 /* The hash bucket size is the standard one, namely 4. */
2534 const struct elf_size_info hppa64_elf_size_info
=
2536 sizeof (Elf64_External_Ehdr
),
2537 sizeof (Elf64_External_Phdr
),
2538 sizeof (Elf64_External_Shdr
),
2539 sizeof (Elf64_External_Rel
),
2540 sizeof (Elf64_External_Rela
),
2541 sizeof (Elf64_External_Sym
),
2542 sizeof (Elf64_External_Dyn
),
2543 sizeof (Elf_External_Note
),
2547 ELFCLASS64
, EV_CURRENT
,
2548 bfd_elf64_write_out_phdrs
,
2549 bfd_elf64_write_shdrs_and_ehdr
,
2550 bfd_elf64_write_relocs
,
2551 bfd_elf64_swap_symbol_out
,
2552 bfd_elf64_slurp_reloc_table
,
2553 bfd_elf64_slurp_symbol_table
,
2554 bfd_elf64_swap_dyn_in
,
2555 bfd_elf64_swap_dyn_out
,
2562 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2563 #define TARGET_BIG_NAME "elf64-hppa"
2564 #define ELF_ARCH bfd_arch_hppa
2565 #define ELF_MACHINE_CODE EM_PARISC
2566 /* This is not strictly correct. The maximum page size for PA2.0 is
2567 64M. But everything still uses 4k. */
2568 #define ELF_MAXPAGESIZE 0x1000
2569 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2570 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2571 #define elf_info_to_howto elf_hppa_info_to_howto
2572 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2574 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2575 #define elf_backend_object_p elf64_hppa_object_p
2576 #define elf_backend_final_write_processing \
2577 elf_hppa_final_write_processing
2578 #define elf_backend_fake_sections elf_hppa_fake_sections
2579 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2581 #define elf_backend_relocate_section elf_hppa_relocate_section
2583 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2585 #define elf_backend_create_dynamic_sections \
2586 elf64_hppa_create_dynamic_sections
2587 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2589 #define elf_backend_adjust_dynamic_symbol \
2590 elf64_hppa_adjust_dynamic_symbol
2592 #define elf_backend_size_dynamic_sections \
2593 elf64_hppa_size_dynamic_sections
2595 #define elf_backend_finish_dynamic_symbol \
2596 elf64_hppa_finish_dynamic_symbol
2597 #define elf_backend_finish_dynamic_sections \
2598 elf64_hppa_finish_dynamic_sections
2600 /* Stuff for the BFD linker: */
2601 #define bfd_elf64_bfd_link_hash_table_create \
2602 elf64_hppa_hash_table_create
2604 #define elf_backend_check_relocs \
2605 elf64_hppa_check_relocs
2607 #define elf_backend_size_info \
2608 hppa64_elf_size_info
2610 #define elf_backend_additional_program_headers \
2611 elf64_hppa_additional_program_headers
2613 #define elf_backend_modify_segment_map \
2614 elf64_hppa_modify_segment_map
2616 #define elf_backend_link_output_symbol_hook \
2617 elf64_hppa_link_output_symbol_hook
2620 #define elf_backend_want_got_plt 0
2621 #define elf_backend_plt_readonly 0
2622 #define elf_backend_want_plt_sym 0
2623 #define elf_backend_got_header_size 0
2624 #define elf_backend_plt_header_size 0
2625 #define elf_backend_type_change_ok true
2627 #include "elf64-target.h"