1 /* Support for HPPA 64-bit ELF
2 Copyright 1999, 2000, 2001 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. */
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_link_output_symbol_hook
202 PARAMS ((bfd
*abfd
, struct bfd_link_info
*, const char *,
203 Elf_Internal_Sym
*, asection
*input_sec
));
205 static boolean elf64_hppa_finish_dynamic_symbol
206 PARAMS ((bfd
*, struct bfd_link_info
*,
207 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
209 static int elf64_hppa_additional_program_headers
PARAMS ((bfd
*));
211 static boolean elf64_hppa_modify_segment_map
PARAMS ((bfd
*));
213 static boolean elf64_hppa_finish_dynamic_sections
214 PARAMS ((bfd
*, struct bfd_link_info
*));
216 static boolean elf64_hppa_check_relocs
217 PARAMS ((bfd
*, struct bfd_link_info
*,
218 asection
*, const Elf_Internal_Rela
*));
220 static boolean elf64_hppa_dynamic_symbol_p
221 PARAMS ((struct elf_link_hash_entry
*, struct bfd_link_info
*));
223 static boolean elf64_hppa_mark_exported_functions
224 PARAMS ((struct elf_link_hash_entry
*, PTR
));
226 static boolean elf64_hppa_finalize_opd
227 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
229 static boolean elf64_hppa_finalize_dlt
230 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
232 static boolean allocate_global_data_dlt
233 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
235 static boolean allocate_global_data_plt
236 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
238 static boolean allocate_global_data_stub
239 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
241 static boolean allocate_global_data_opd
242 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
244 static boolean get_reloc_section
245 PARAMS ((bfd
*, struct elf64_hppa_link_hash_table
*, asection
*));
247 static boolean count_dyn_reloc
248 PARAMS ((bfd
*, struct elf64_hppa_dyn_hash_entry
*,
249 int, asection
*, int, bfd_vma
, bfd_vma
));
251 static boolean allocate_dynrel_entries
252 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
254 static boolean elf64_hppa_finalize_dynreloc
255 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
257 static boolean get_opd
258 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
260 static boolean get_plt
261 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
263 static boolean get_dlt
264 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
266 static boolean get_stub
267 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
269 static int elf64_hppa_elf_get_symbol_type
270 PARAMS ((Elf_Internal_Sym
*, int));
273 elf64_hppa_dyn_hash_table_init (ht
, abfd
, new)
274 struct elf64_hppa_dyn_hash_table
*ht
;
275 bfd
*abfd ATTRIBUTE_UNUSED
;
276 new_hash_entry_func
new;
278 memset (ht
, 0, sizeof (*ht
));
279 return bfd_hash_table_init (&ht
->root
, new);
282 static struct bfd_hash_entry
*
283 elf64_hppa_new_dyn_hash_entry (entry
, table
, string
)
284 struct bfd_hash_entry
*entry
;
285 struct bfd_hash_table
*table
;
288 struct elf64_hppa_dyn_hash_entry
*ret
;
289 ret
= (struct elf64_hppa_dyn_hash_entry
*) entry
;
291 /* Allocate the structure if it has not already been allocated by a
294 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
299 /* Initialize our local data. All zeros, and definitely easier
300 than setting 8 bit fields. */
301 memset (ret
, 0, sizeof (*ret
));
303 /* Call the allocation method of the superclass. */
304 ret
= ((struct elf64_hppa_dyn_hash_entry
*)
305 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
310 /* Create the derived linker hash table. The PA64 ELF port uses this
311 derived hash table to keep information specific to the PA ElF
312 linker (without using static variables). */
314 static struct bfd_link_hash_table
*
315 elf64_hppa_hash_table_create (abfd
)
318 struct elf64_hppa_link_hash_table
*ret
;
320 ret
= bfd_zalloc (abfd
, (bfd_size_type
) sizeof (*ret
));
323 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
324 _bfd_elf_link_hash_newfunc
))
326 bfd_release (abfd
, ret
);
330 if (!elf64_hppa_dyn_hash_table_init (&ret
->dyn_hash_table
, abfd
,
331 elf64_hppa_new_dyn_hash_entry
))
333 return &ret
->root
.root
;
336 /* Look up an entry in a PA64 ELF linker hash table. */
338 static struct elf64_hppa_dyn_hash_entry
*
339 elf64_hppa_dyn_hash_lookup(table
, string
, create
, copy
)
340 struct elf64_hppa_dyn_hash_table
*table
;
342 boolean create
, copy
;
344 return ((struct elf64_hppa_dyn_hash_entry
*)
345 bfd_hash_lookup (&table
->root
, string
, create
, copy
));
348 /* Traverse a PA64 ELF linker hash table. */
351 elf64_hppa_dyn_hash_traverse (table
, func
, info
)
352 struct elf64_hppa_dyn_hash_table
*table
;
353 boolean (*func
) PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
358 (boolean (*) PARAMS ((struct bfd_hash_entry
*, PTR
))) func
,
362 /* Return nonzero if ABFD represents a PA2.0 ELF64 file.
364 Additionally we set the default architecture and machine. */
366 elf64_hppa_object_p (abfd
)
369 Elf_Internal_Ehdr
* i_ehdrp
;
372 i_ehdrp
= elf_elfheader (abfd
);
373 if (strcmp (bfd_get_target (abfd
), "elf64-hppa-linux") == 0)
375 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_LINUX
)
380 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_HPUX
)
384 flags
= i_ehdrp
->e_flags
;
385 switch (flags
& (EF_PARISC_ARCH
| EF_PARISC_WIDE
))
388 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 10);
390 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 11);
392 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 20);
393 case EFA_PARISC_2_0
| EF_PARISC_WIDE
:
394 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
396 /* Don't be fussy. */
400 /* Given section type (hdr->sh_type), return a boolean indicating
401 whether or not the section is an elf64-hppa specific section. */
403 elf64_hppa_section_from_shdr (abfd
, hdr
, name
)
405 Elf64_Internal_Shdr
*hdr
;
410 switch (hdr
->sh_type
)
413 if (strcmp (name
, ".PARISC.archext") != 0)
416 case SHT_PARISC_UNWIND
:
417 if (strcmp (name
, ".PARISC.unwind") != 0)
421 case SHT_PARISC_ANNOT
:
426 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
428 newsect
= hdr
->bfd_section
;
433 /* Construct a string for use in the elf64_hppa_dyn_hash_table. The
434 name describes what was once potentially anonymous memory. We
435 allocate memory as necessary, possibly reusing PBUF/PLEN. */
438 get_dyn_name (sec
, h
, rel
, pbuf
, plen
)
440 struct elf_link_hash_entry
*h
;
441 const Elf_Internal_Rela
*rel
;
449 if (h
&& rel
->r_addend
== 0)
450 return h
->root
.root
.string
;
453 nlen
= strlen (h
->root
.root
.string
);
455 nlen
= 8 + 1 + sizeof (rel
->r_info
) * 2 - 8;
456 tlen
= nlen
+ 1 + sizeof (rel
->r_addend
) * 2 + 1;
464 *pbuf
= buf
= malloc (tlen
);
472 memcpy (buf
, h
->root
.root
.string
, nlen
);
474 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
478 nlen
= sprintf (buf
, "%x:%lx",
479 sec
->id
& 0xffffffff,
480 (long) ELF64_R_SYM (rel
->r_info
));
484 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
491 /* SEC is a section containing relocs for an input BFD when linking; return
492 a suitable section for holding relocs in the output BFD for a link. */
495 get_reloc_section (abfd
, hppa_info
, sec
)
497 struct elf64_hppa_link_hash_table
*hppa_info
;
500 const char *srel_name
;
504 srel_name
= (bfd_elf_string_from_elf_section
505 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
506 elf_section_data(sec
)->rel_hdr
.sh_name
));
507 if (srel_name
== NULL
)
510 BFD_ASSERT ((strncmp (srel_name
, ".rela", 5) == 0
511 && strcmp (bfd_get_section_name (abfd
, sec
),
513 || (strncmp (srel_name
, ".rel", 4) == 0
514 && strcmp (bfd_get_section_name (abfd
, sec
),
517 dynobj
= hppa_info
->root
.dynobj
;
519 hppa_info
->root
.dynobj
= dynobj
= abfd
;
521 srel
= bfd_get_section_by_name (dynobj
, srel_name
);
524 srel
= bfd_make_section (dynobj
, srel_name
);
526 || !bfd_set_section_flags (dynobj
, srel
,
533 || !bfd_set_section_alignment (dynobj
, srel
, 3))
537 hppa_info
->other_rel_sec
= srel
;
541 /* Add a new entry to the list of dynamic relocations against DYN_H.
543 We use this to keep a record of all the FPTR relocations against a
544 particular symbol so that we can create FPTR relocations in the
548 count_dyn_reloc (abfd
, dyn_h
, type
, sec
, sec_symndx
, offset
, addend
)
550 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
557 struct elf64_hppa_dyn_reloc_entry
*rent
;
559 rent
= (struct elf64_hppa_dyn_reloc_entry
*)
560 bfd_alloc (abfd
, (bfd_size_type
) sizeof (*rent
));
564 rent
->next
= dyn_h
->reloc_entries
;
567 rent
->sec_symndx
= sec_symndx
;
568 rent
->offset
= offset
;
569 rent
->addend
= addend
;
570 dyn_h
->reloc_entries
= rent
;
575 /* Scan the RELOCS and record the type of dynamic entries that each
576 referenced symbol needs. */
579 elf64_hppa_check_relocs (abfd
, info
, sec
, relocs
)
581 struct bfd_link_info
*info
;
583 const Elf_Internal_Rela
*relocs
;
585 struct elf64_hppa_link_hash_table
*hppa_info
;
586 const Elf_Internal_Rela
*relend
;
587 Elf_Internal_Shdr
*symtab_hdr
;
588 const Elf_Internal_Rela
*rel
;
589 asection
*dlt
, *plt
, *stubs
;
594 if (info
->relocateable
)
597 /* If this is the first dynamic object found in the link, create
598 the special sections required for dynamic linking. */
599 if (! elf_hash_table (info
)->dynamic_sections_created
)
601 if (! bfd_elf64_link_create_dynamic_sections (abfd
, info
))
605 hppa_info
= elf64_hppa_hash_table (info
);
606 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
608 /* If necessary, build a new table holding section symbols indices
609 for this BFD. This is disgusting. */
611 if (info
->shared
&& hppa_info
->section_syms_bfd
!= abfd
)
615 Elf_Internal_Sym
*local_syms
, *isym
;
616 Elf64_External_Sym
*ext_syms
, *esym
;
619 /* We're done with the old cache of section index to section symbol
620 index information. Free it.
622 ?!? Note we leak the last section_syms array. Presumably we
623 could free it in one of the later routines in this file. */
624 if (hppa_info
->section_syms
)
625 free (hppa_info
->section_syms
);
627 /* Allocate memory for the internal and external symbols. */
628 amt
= symtab_hdr
->sh_info
;
629 amt
*= sizeof (Elf_Internal_Sym
);
630 local_syms
= (Elf_Internal_Sym
*) bfd_malloc (amt
);
631 if (local_syms
== NULL
)
634 amt
= symtab_hdr
->sh_info
;
635 amt
*= sizeof (Elf64_External_Sym
);
636 ext_syms
= (Elf64_External_Sym
*) bfd_malloc (amt
);
637 if (ext_syms
== NULL
)
643 /* Read in the local symbols. */
644 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
645 || bfd_bread (ext_syms
, amt
, abfd
) != amt
)
652 /* Swap in the local symbols, also record the highest section index
653 referenced by the local symbols. */
657 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++, esym
++, isym
++)
659 bfd_elf64_swap_symbol_in (abfd
, esym
, isym
);
660 if (isym
->st_shndx
> highest_shndx
)
661 highest_shndx
= isym
->st_shndx
;
664 /* Now we can free the external symbols. */
667 /* Allocate an array to hold the section index to section symbol index
668 mapping. Bump by one since we start counting at zero. */
672 hppa_info
->section_syms
= (int *) bfd_malloc (amt
);
674 /* Now walk the local symbols again. If we find a section symbol,
675 record the index of the symbol into the section_syms array. */
676 for (isym
= local_syms
, i
= 0; i
< symtab_hdr
->sh_info
; i
++, isym
++)
678 if (ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
679 hppa_info
->section_syms
[isym
->st_shndx
] = i
;
682 /* We are finished with the local symbols. Get rid of them. */
685 /* Record which BFD we built the section_syms mapping for. */
686 hppa_info
->section_syms_bfd
= abfd
;
689 /* Record the symbol index for this input section. We may need it for
690 relocations when building shared libraries. When not building shared
691 libraries this value is never really used, but assign it to zero to
692 prevent out of bounds memory accesses in other routines. */
695 sec_symndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
697 /* If we did not find a section symbol for this section, then
698 something went terribly wrong above. */
699 if (sec_symndx
== -1)
702 sec_symndx
= hppa_info
->section_syms
[sec_symndx
];
707 dlt
= plt
= stubs
= NULL
;
711 relend
= relocs
+ sec
->reloc_count
;
712 for (rel
= relocs
; rel
< relend
; ++rel
)
722 struct elf_link_hash_entry
*h
= NULL
;
723 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
724 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
726 const char *addr_name
;
727 boolean maybe_dynamic
;
728 int dynrel_type
= R_PARISC_NONE
;
729 static reloc_howto_type
*howto
;
731 if (r_symndx
>= symtab_hdr
->sh_info
)
733 /* We're dealing with a global symbol -- find its hash entry
734 and mark it as being referenced. */
735 long indx
= r_symndx
- symtab_hdr
->sh_info
;
736 h
= elf_sym_hashes (abfd
)[indx
];
737 while (h
->root
.type
== bfd_link_hash_indirect
738 || h
->root
.type
== bfd_link_hash_warning
)
739 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
741 h
->elf_link_hash_flags
|= ELF_LINK_HASH_REF_REGULAR
;
744 /* We can only get preliminary data on whether a symbol is
745 locally or externally defined, as not all of the input files
746 have yet been processed. Do something with what we know, as
747 this may help reduce memory usage and processing time later. */
748 maybe_dynamic
= false;
749 if (h
&& ((info
->shared
&& ! info
->symbolic
)
750 || ! (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
751 || h
->root
.type
== bfd_link_hash_defweak
))
752 maybe_dynamic
= true;
754 howto
= elf_hppa_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
758 /* These are simple indirect references to symbols through the
759 DLT. We need to create a DLT entry for any symbols which
760 appears in a DLTIND relocation. */
761 case R_PARISC_DLTIND21L
:
762 case R_PARISC_DLTIND14R
:
763 case R_PARISC_DLTIND14F
:
764 case R_PARISC_DLTIND14WR
:
765 case R_PARISC_DLTIND14DR
:
766 need_entry
= NEED_DLT
;
769 /* ?!? These need a DLT entry. But I have no idea what to do with
770 the "link time TP value. */
771 case R_PARISC_LTOFF_TP21L
:
772 case R_PARISC_LTOFF_TP14R
:
773 case R_PARISC_LTOFF_TP14F
:
774 case R_PARISC_LTOFF_TP64
:
775 case R_PARISC_LTOFF_TP14WR
:
776 case R_PARISC_LTOFF_TP14DR
:
777 case R_PARISC_LTOFF_TP16F
:
778 case R_PARISC_LTOFF_TP16WF
:
779 case R_PARISC_LTOFF_TP16DF
:
780 need_entry
= NEED_DLT
;
783 /* These are function calls. Depending on their precise target we
784 may need to make a stub for them. The stub uses the PLT, so we
785 need to create PLT entries for these symbols too. */
786 case R_PARISC_PCREL12F
:
787 case R_PARISC_PCREL17F
:
788 case R_PARISC_PCREL22F
:
789 case R_PARISC_PCREL32
:
790 case R_PARISC_PCREL64
:
791 case R_PARISC_PCREL21L
:
792 case R_PARISC_PCREL17R
:
793 case R_PARISC_PCREL17C
:
794 case R_PARISC_PCREL14R
:
795 case R_PARISC_PCREL14F
:
796 case R_PARISC_PCREL22C
:
797 case R_PARISC_PCREL14WR
:
798 case R_PARISC_PCREL14DR
:
799 case R_PARISC_PCREL16F
:
800 case R_PARISC_PCREL16WF
:
801 case R_PARISC_PCREL16DF
:
802 need_entry
= (NEED_PLT
| NEED_STUB
);
805 case R_PARISC_PLTOFF21L
:
806 case R_PARISC_PLTOFF14R
:
807 case R_PARISC_PLTOFF14F
:
808 case R_PARISC_PLTOFF14WR
:
809 case R_PARISC_PLTOFF14DR
:
810 case R_PARISC_PLTOFF16F
:
811 case R_PARISC_PLTOFF16WF
:
812 case R_PARISC_PLTOFF16DF
:
813 need_entry
= (NEED_PLT
);
817 if (info
->shared
|| maybe_dynamic
)
818 need_entry
= (NEED_DYNREL
);
819 dynrel_type
= R_PARISC_DIR64
;
822 /* This is an indirect reference through the DLT to get the address
823 of a OPD descriptor. Thus we need to make a DLT entry that points
825 case R_PARISC_LTOFF_FPTR21L
:
826 case R_PARISC_LTOFF_FPTR14R
:
827 case R_PARISC_LTOFF_FPTR14WR
:
828 case R_PARISC_LTOFF_FPTR14DR
:
829 case R_PARISC_LTOFF_FPTR32
:
830 case R_PARISC_LTOFF_FPTR64
:
831 case R_PARISC_LTOFF_FPTR16F
:
832 case R_PARISC_LTOFF_FPTR16WF
:
833 case R_PARISC_LTOFF_FPTR16DF
:
834 if (info
->shared
|| maybe_dynamic
)
835 need_entry
= (NEED_DLT
| NEED_OPD
);
837 need_entry
= (NEED_DLT
| NEED_OPD
);
838 dynrel_type
= R_PARISC_FPTR64
;
841 /* This is a simple OPD entry. */
842 case R_PARISC_FPTR64
:
843 if (info
->shared
|| maybe_dynamic
)
844 need_entry
= (NEED_OPD
| NEED_DYNREL
);
846 need_entry
= (NEED_OPD
);
847 dynrel_type
= R_PARISC_FPTR64
;
850 /* Add more cases as needed. */
856 /* Collect a canonical name for this address. */
857 addr_name
= get_dyn_name (sec
, h
, rel
, &buf
, &buf_len
);
859 /* Collect the canonical entry data for this address. */
860 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
861 addr_name
, true, true);
864 /* Stash away enough information to be able to find this symbol
865 regardless of whether or not it is local or global. */
868 dyn_h
->sym_indx
= r_symndx
;
870 /* ?!? We may need to do some error checking in here. */
871 /* Create what's needed. */
872 if (need_entry
& NEED_DLT
)
874 if (! hppa_info
->dlt_sec
875 && ! get_dlt (abfd
, info
, hppa_info
))
880 if (need_entry
& NEED_PLT
)
882 if (! hppa_info
->plt_sec
883 && ! get_plt (abfd
, info
, hppa_info
))
888 if (need_entry
& NEED_STUB
)
890 if (! hppa_info
->stub_sec
891 && ! get_stub (abfd
, info
, hppa_info
))
893 dyn_h
->want_stub
= 1;
896 if (need_entry
& NEED_OPD
)
898 if (! hppa_info
->opd_sec
899 && ! get_opd (abfd
, info
, hppa_info
))
904 /* FPTRs are not allocated by the dynamic linker for PA64, though
905 it is possible that will change in the future. */
907 /* This could be a local function that had its address taken, in
908 which case H will be NULL. */
910 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
913 /* Add a new dynamic relocation to the chain of dynamic
914 relocations for this symbol. */
915 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
917 if (! hppa_info
->other_rel_sec
918 && ! get_reloc_section (abfd
, hppa_info
, sec
))
921 if (!count_dyn_reloc (abfd
, dyn_h
, dynrel_type
, sec
,
922 sec_symndx
, rel
->r_offset
, rel
->r_addend
))
925 /* If we are building a shared library and we just recorded
926 a dynamic R_PARISC_FPTR64 relocation, then make sure the
927 section symbol for this section ends up in the dynamic
929 if (info
->shared
&& dynrel_type
== R_PARISC_FPTR64
930 && ! (_bfd_elf64_link_record_local_dynamic_symbol
931 (info
, abfd
, sec_symndx
)))
946 struct elf64_hppa_allocate_data
948 struct bfd_link_info
*info
;
952 /* Should we do dynamic things to this symbol? */
955 elf64_hppa_dynamic_symbol_p (h
, info
)
956 struct elf_link_hash_entry
*h
;
957 struct bfd_link_info
*info
;
962 while (h
->root
.type
== bfd_link_hash_indirect
963 || h
->root
.type
== bfd_link_hash_warning
)
964 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
966 if (h
->dynindx
== -1)
969 if (h
->root
.type
== bfd_link_hash_undefweak
970 || h
->root
.type
== bfd_link_hash_defweak
)
973 if (h
->root
.root
.string
[0] == '$' && h
->root
.root
.string
[1] == '$')
976 if ((info
->shared
&& !info
->symbolic
)
977 || ((h
->elf_link_hash_flags
978 & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
))
979 == (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
)))
985 /* Mark all funtions exported by this file so that we can later allocate
986 entries in .opd for them. */
989 elf64_hppa_mark_exported_functions (h
, data
)
990 struct elf_link_hash_entry
*h
;
993 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
994 struct elf64_hppa_link_hash_table
*hppa_info
;
996 hppa_info
= elf64_hppa_hash_table (info
);
999 && (h
->root
.type
== bfd_link_hash_defined
1000 || h
->root
.type
== bfd_link_hash_defweak
)
1001 && h
->root
.u
.def
.section
->output_section
!= NULL
1002 && h
->type
== STT_FUNC
)
1004 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1006 /* Add this symbol to the PA64 linker hash table. */
1007 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1008 h
->root
.root
.string
, true, true);
1012 if (! hppa_info
->opd_sec
1013 && ! get_opd (hppa_info
->root
.dynobj
, info
, hppa_info
))
1016 dyn_h
->want_opd
= 1;
1017 /* Put a flag here for output_symbol_hook. */
1018 dyn_h
->st_shndx
= -1;
1019 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1025 /* Allocate space for a DLT entry. */
1028 allocate_global_data_dlt (dyn_h
, data
)
1029 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1032 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1034 if (dyn_h
->want_dlt
)
1036 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1038 if (x
->info
->shared
)
1040 /* Possibly add the symbol to the local dynamic symbol
1041 table since we might need to create a dynamic relocation
1044 || (h
&& h
->dynindx
== -1))
1047 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1049 if (! (_bfd_elf64_link_record_local_dynamic_symbol
1050 (x
->info
, owner
, dyn_h
->sym_indx
)))
1055 dyn_h
->dlt_offset
= x
->ofs
;
1056 x
->ofs
+= DLT_ENTRY_SIZE
;
1061 /* Allocate space for a DLT.PLT entry. */
1064 allocate_global_data_plt (dyn_h
, data
)
1065 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1068 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1071 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1072 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1073 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1074 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1076 dyn_h
->plt_offset
= x
->ofs
;
1077 x
->ofs
+= PLT_ENTRY_SIZE
;
1078 if (dyn_h
->plt_offset
< 0x2000)
1079 elf64_hppa_hash_table (x
->info
)->gp_offset
= dyn_h
->plt_offset
;
1082 dyn_h
->want_plt
= 0;
1087 /* Allocate space for a STUB entry. */
1090 allocate_global_data_stub (dyn_h
, data
)
1091 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1094 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1096 if (dyn_h
->want_stub
1097 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1098 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1099 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1100 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1102 dyn_h
->stub_offset
= x
->ofs
;
1103 x
->ofs
+= sizeof (plt_stub
);
1106 dyn_h
->want_stub
= 0;
1110 /* Allocate space for a FPTR entry. */
1113 allocate_global_data_opd (dyn_h
, data
)
1114 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1117 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1119 if (dyn_h
->want_opd
)
1121 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1124 while (h
->root
.type
== bfd_link_hash_indirect
1125 || h
->root
.type
== bfd_link_hash_warning
)
1126 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1128 /* We never need an opd entry for a symbol which is not
1129 defined by this output file. */
1130 if (h
&& h
->root
.type
== bfd_link_hash_undefined
)
1131 dyn_h
->want_opd
= 0;
1133 /* If we are creating a shared library, took the address of a local
1134 function or might export this function from this object file, then
1135 we have to create an opd descriptor. */
1136 else if (x
->info
->shared
1139 || ((h
->root
.type
== bfd_link_hash_defined
1140 || h
->root
.type
== bfd_link_hash_defweak
)
1141 && h
->root
.u
.def
.section
->output_section
!= NULL
))
1143 /* If we are creating a shared library, then we will have to
1144 create a runtime relocation for the symbol to properly
1145 initialize the .opd entry. Make sure the symbol gets
1146 added to the dynamic symbol table. */
1148 && (h
== NULL
|| (h
->dynindx
== -1)))
1151 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1153 if (!_bfd_elf64_link_record_local_dynamic_symbol
1154 (x
->info
, owner
, dyn_h
->sym_indx
))
1158 /* This may not be necessary or desirable anymore now that
1159 we have some support for dealing with section symbols
1160 in dynamic relocs. But name munging does make the result
1161 much easier to debug. ie, the EPLT reloc will reference
1162 a symbol like .foobar, instead of .text + offset. */
1163 if (x
->info
->shared
&& h
)
1166 struct elf_link_hash_entry
*nh
;
1168 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
1170 strcpy (new_name
+ 1, h
->root
.root
.string
);
1172 nh
= elf_link_hash_lookup (elf_hash_table (x
->info
),
1173 new_name
, true, true, true);
1175 nh
->root
.type
= h
->root
.type
;
1176 nh
->root
.u
.def
.value
= h
->root
.u
.def
.value
;
1177 nh
->root
.u
.def
.section
= h
->root
.u
.def
.section
;
1179 if (! bfd_elf64_link_record_dynamic_symbol (x
->info
, nh
))
1183 dyn_h
->opd_offset
= x
->ofs
;
1184 x
->ofs
+= OPD_ENTRY_SIZE
;
1187 /* Otherwise we do not need an opd entry. */
1189 dyn_h
->want_opd
= 0;
1194 /* HP requires the EI_OSABI field to be filled in. The assignment to
1195 EI_ABIVERSION may not be strictly necessary. */
1198 elf64_hppa_post_process_headers (abfd
, link_info
)
1200 struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
;
1202 Elf_Internal_Ehdr
* i_ehdrp
;
1204 i_ehdrp
= elf_elfheader (abfd
);
1206 if (strcmp (bfd_get_target (abfd
), "elf64-hppa-linux") == 0)
1208 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_LINUX
;
1212 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
1213 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
1217 /* Create function descriptor section (.opd). This section is called .opd
1218 because it contains "official prodecure descriptors". The "official"
1219 refers to the fact that these descriptors are used when taking the address
1220 of a procedure, thus ensuring a unique address for each procedure. */
1223 get_opd (abfd
, info
, hppa_info
)
1225 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1226 struct elf64_hppa_link_hash_table
*hppa_info
;
1231 opd
= hppa_info
->opd_sec
;
1234 dynobj
= hppa_info
->root
.dynobj
;
1236 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1238 opd
= bfd_make_section (dynobj
, ".opd");
1240 || !bfd_set_section_flags (dynobj
, opd
,
1245 | SEC_LINKER_CREATED
))
1246 || !bfd_set_section_alignment (abfd
, opd
, 3))
1252 hppa_info
->opd_sec
= opd
;
1258 /* Create the PLT section. */
1261 get_plt (abfd
, info
, hppa_info
)
1263 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1264 struct elf64_hppa_link_hash_table
*hppa_info
;
1269 plt
= hppa_info
->plt_sec
;
1272 dynobj
= hppa_info
->root
.dynobj
;
1274 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1276 plt
= bfd_make_section (dynobj
, ".plt");
1278 || !bfd_set_section_flags (dynobj
, plt
,
1283 | SEC_LINKER_CREATED
))
1284 || !bfd_set_section_alignment (abfd
, plt
, 3))
1290 hppa_info
->plt_sec
= plt
;
1296 /* Create the DLT section. */
1299 get_dlt (abfd
, info
, hppa_info
)
1301 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1302 struct elf64_hppa_link_hash_table
*hppa_info
;
1307 dlt
= hppa_info
->dlt_sec
;
1310 dynobj
= hppa_info
->root
.dynobj
;
1312 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1314 dlt
= bfd_make_section (dynobj
, ".dlt");
1316 || !bfd_set_section_flags (dynobj
, dlt
,
1321 | SEC_LINKER_CREATED
))
1322 || !bfd_set_section_alignment (abfd
, dlt
, 3))
1328 hppa_info
->dlt_sec
= dlt
;
1334 /* Create the stubs section. */
1337 get_stub (abfd
, info
, hppa_info
)
1339 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1340 struct elf64_hppa_link_hash_table
*hppa_info
;
1345 stub
= hppa_info
->stub_sec
;
1348 dynobj
= hppa_info
->root
.dynobj
;
1350 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1352 stub
= bfd_make_section (dynobj
, ".stub");
1354 || !bfd_set_section_flags (dynobj
, stub
,
1360 | SEC_LINKER_CREATED
))
1361 || !bfd_set_section_alignment (abfd
, stub
, 3))
1367 hppa_info
->stub_sec
= stub
;
1373 /* Create sections necessary for dynamic linking. This is only a rough
1374 cut and will likely change as we learn more about the somewhat
1375 unusual dynamic linking scheme HP uses.
1378 Contains code to implement cross-space calls. The first time one
1379 of the stubs is used it will call into the dynamic linker, later
1380 calls will go straight to the target.
1382 The only stub we support right now looks like
1386 ldd OFFSET+8(%dp),%dp
1388 Other stubs may be needed in the future. We may want the remove
1389 the break/nop instruction. It is only used right now to keep the
1390 offset of a .plt entry and a .stub entry in sync.
1393 This is what most people call the .got. HP used a different name.
1397 Relocations for the DLT.
1400 Function pointers as address,gp pairs.
1403 Should contain dynamic IPLT (and EPLT?) relocations.
1409 EPLT relocations for symbols exported from shared libraries. */
1412 elf64_hppa_create_dynamic_sections (abfd
, info
)
1414 struct bfd_link_info
*info
;
1418 if (! get_stub (abfd
, info
, elf64_hppa_hash_table (info
)))
1421 if (! get_dlt (abfd
, info
, elf64_hppa_hash_table (info
)))
1424 if (! get_plt (abfd
, info
, elf64_hppa_hash_table (info
)))
1427 if (! get_opd (abfd
, info
, elf64_hppa_hash_table (info
)))
1430 s
= bfd_make_section(abfd
, ".rela.dlt");
1432 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1436 | SEC_LINKER_CREATED
))
1437 || !bfd_set_section_alignment (abfd
, s
, 3))
1439 elf64_hppa_hash_table (info
)->dlt_rel_sec
= s
;
1441 s
= bfd_make_section(abfd
, ".rela.plt");
1443 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1447 | SEC_LINKER_CREATED
))
1448 || !bfd_set_section_alignment (abfd
, s
, 3))
1450 elf64_hppa_hash_table (info
)->plt_rel_sec
= s
;
1452 s
= bfd_make_section(abfd
, ".rela.data");
1454 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1458 | SEC_LINKER_CREATED
))
1459 || !bfd_set_section_alignment (abfd
, s
, 3))
1461 elf64_hppa_hash_table (info
)->other_rel_sec
= s
;
1463 s
= bfd_make_section(abfd
, ".rela.opd");
1465 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1469 | SEC_LINKER_CREATED
))
1470 || !bfd_set_section_alignment (abfd
, s
, 3))
1472 elf64_hppa_hash_table (info
)->opd_rel_sec
= s
;
1477 /* Allocate dynamic relocations for those symbols that turned out
1481 allocate_dynrel_entries (dyn_h
, data
)
1482 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1485 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1486 struct elf64_hppa_link_hash_table
*hppa_info
;
1487 struct elf64_hppa_dyn_reloc_entry
*rent
;
1488 boolean dynamic_symbol
, shared
;
1490 hppa_info
= elf64_hppa_hash_table (x
->info
);
1491 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
);
1492 shared
= x
->info
->shared
;
1494 /* We may need to allocate relocations for a non-dynamic symbol
1495 when creating a shared library. */
1496 if (!dynamic_symbol
&& !shared
)
1499 /* Take care of the normal data relocations. */
1501 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
1505 case R_PARISC_FPTR64
:
1506 /* Allocate one iff we are not building a shared library and
1507 !want_opd, which by this point will be true only if we're
1508 actually allocating one statically in the main executable. */
1509 if (!x
->info
->shared
&& dyn_h
->want_opd
)
1513 hppa_info
->other_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1515 /* Make sure this symbol gets into the dynamic symbol table if it is
1516 not already recorded. ?!? This should not be in the loop since
1517 the symbol need only be added once. */
1518 if (dyn_h
->h
== 0 || dyn_h
->h
->dynindx
== -1)
1519 if (!_bfd_elf64_link_record_local_dynamic_symbol
1520 (x
->info
, rent
->sec
->owner
, dyn_h
->sym_indx
))
1524 /* Take care of the GOT and PLT relocations. */
1526 if ((dynamic_symbol
|| shared
) && dyn_h
->want_dlt
)
1527 hppa_info
->dlt_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1529 /* If we are building a shared library, then every symbol that has an
1530 opd entry will need an EPLT relocation to relocate the symbol's address
1531 and __gp value based on the runtime load address. */
1532 if (shared
&& dyn_h
->want_opd
)
1533 hppa_info
->opd_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1535 if (dyn_h
->want_plt
&& dynamic_symbol
)
1537 bfd_size_type t
= 0;
1539 /* Dynamic symbols get one IPLT relocation. Local symbols in
1540 shared libraries get two REL relocations. Local symbols in
1541 main applications get nothing. */
1543 t
= sizeof (Elf64_External_Rela
);
1545 t
= 2 * sizeof (Elf64_External_Rela
);
1547 hppa_info
->plt_rel_sec
->_raw_size
+= t
;
1553 /* Adjust a symbol defined by a dynamic object and referenced by a
1557 elf64_hppa_adjust_dynamic_symbol (info
, h
)
1558 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1559 struct elf_link_hash_entry
*h
;
1561 /* ??? Undefined symbols with PLT entries should be re-defined
1562 to be the PLT entry. */
1564 /* If this is a weak symbol, and there is a real definition, the
1565 processor independent code will have arranged for us to see the
1566 real definition first, and we can just use the same value. */
1567 if (h
->weakdef
!= NULL
)
1569 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1570 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1571 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1572 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1576 /* If this is a reference to a symbol defined by a dynamic object which
1577 is not a function, we might allocate the symbol in our .dynbss section
1578 and allocate a COPY dynamic relocation.
1580 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1586 /* Set the final sizes of the dynamic sections and allocate memory for
1587 the contents of our special sections. */
1590 elf64_hppa_size_dynamic_sections (output_bfd
, info
)
1592 struct bfd_link_info
*info
;
1599 struct elf64_hppa_allocate_data data
;
1600 struct elf64_hppa_link_hash_table
*hppa_info
;
1602 hppa_info
= elf64_hppa_hash_table (info
);
1604 dynobj
= elf_hash_table (info
)->dynobj
;
1605 BFD_ASSERT (dynobj
!= NULL
);
1607 if (elf_hash_table (info
)->dynamic_sections_created
)
1609 /* Set the contents of the .interp section to the interpreter. */
1612 s
= bfd_get_section_by_name (dynobj
, ".interp");
1613 BFD_ASSERT (s
!= NULL
);
1614 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1615 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1620 /* We may have created entries in the .rela.got section.
1621 However, if we are not creating the dynamic sections, we will
1622 not actually use these entries. Reset the size of .rela.dlt,
1623 which will cause it to get stripped from the output file
1625 s
= bfd_get_section_by_name (dynobj
, ".rela.dlt");
1630 /* Allocate the GOT entries. */
1633 if (elf64_hppa_hash_table (info
)->dlt_sec
)
1636 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1637 allocate_global_data_dlt
, &data
);
1638 hppa_info
->dlt_sec
->_raw_size
= data
.ofs
;
1641 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1642 allocate_global_data_plt
, &data
);
1643 hppa_info
->plt_sec
->_raw_size
= data
.ofs
;
1646 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1647 allocate_global_data_stub
, &data
);
1648 hppa_info
->stub_sec
->_raw_size
= data
.ofs
;
1651 /* Mark each function this program exports so that we will allocate
1652 space in the .opd section for each function's FPTR.
1654 We have to traverse the main linker hash table since we have to
1655 find functions which may not have been mentioned in any relocs. */
1656 elf_link_hash_traverse (elf_hash_table (info
),
1657 elf64_hppa_mark_exported_functions
,
1660 /* Allocate space for entries in the .opd section. */
1661 if (elf64_hppa_hash_table (info
)->opd_sec
)
1664 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1665 allocate_global_data_opd
, &data
);
1666 hppa_info
->opd_sec
->_raw_size
= data
.ofs
;
1669 /* Now allocate space for dynamic relocations, if necessary. */
1670 if (hppa_info
->root
.dynamic_sections_created
)
1671 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1672 allocate_dynrel_entries
, &data
);
1674 /* The sizes of all the sections are set. Allocate memory for them. */
1678 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1683 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1686 /* It's OK to base decisions on the section name, because none
1687 of the dynobj section names depend upon the input files. */
1688 name
= bfd_get_section_name (dynobj
, s
);
1692 if (strcmp (name
, ".plt") == 0)
1694 if (s
->_raw_size
== 0)
1696 /* Strip this section if we don't need it; see the
1702 /* Remember whether there is a PLT. */
1706 else if (strcmp (name
, ".dlt") == 0)
1708 if (s
->_raw_size
== 0)
1710 /* Strip this section if we don't need it; see the
1715 else if (strcmp (name
, ".opd") == 0)
1717 if (s
->_raw_size
== 0)
1719 /* Strip this section if we don't need it; see the
1724 else if (strncmp (name
, ".rela", 4) == 0)
1726 if (s
->_raw_size
== 0)
1728 /* If we don't need this section, strip it from the
1729 output file. This is mostly to handle .rela.bss and
1730 .rela.plt. We must create both sections in
1731 create_dynamic_sections, because they must be created
1732 before the linker maps input sections to output
1733 sections. The linker does that before
1734 adjust_dynamic_symbol is called, and it is that
1735 function which decides whether anything needs to go
1736 into these sections. */
1743 /* Remember whether there are any reloc sections other
1745 if (strcmp (name
, ".rela.plt") != 0)
1747 const char *outname
;
1751 /* If this relocation section applies to a read only
1752 section, then we probably need a DT_TEXTREL
1753 entry. The entries in the .rela.plt section
1754 really apply to the .got section, which we
1755 created ourselves and so know is not readonly. */
1756 outname
= bfd_get_section_name (output_bfd
,
1758 target
= bfd_get_section_by_name (output_bfd
, outname
+ 4);
1760 && (target
->flags
& SEC_READONLY
) != 0
1761 && (target
->flags
& SEC_ALLOC
) != 0)
1765 /* We use the reloc_count field as a counter if we need
1766 to copy relocs into the output file. */
1770 else if (strncmp (name
, ".dlt", 4) != 0
1771 && strcmp (name
, ".stub") != 0
1772 && strcmp (name
, ".got") != 0)
1774 /* It's not one of our sections, so don't allocate space. */
1780 _bfd_strip_section_from_output (info
, s
);
1784 /* Allocate memory for the section contents if it has not
1785 been allocated already. We use bfd_zalloc here in case
1786 unused entries are not reclaimed before the section's
1787 contents are written out. This should not happen, but this
1788 way if it does, we get a R_PARISC_NONE reloc instead of
1790 if (s
->contents
== NULL
)
1792 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1793 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1798 if (elf_hash_table (info
)->dynamic_sections_created
)
1800 /* Always create a DT_PLTGOT. It actually has nothing to do with
1801 the PLT, it is how we communicate the __gp value of a load
1802 module to the dynamic linker. */
1803 #define add_dynamic_entry(TAG, VAL) \
1804 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1806 if (!add_dynamic_entry (DT_HP_DLD_FLAGS
, 0)
1807 || !add_dynamic_entry (DT_PLTGOT
, 0))
1810 /* Add some entries to the .dynamic section. We fill in the
1811 values later, in elf64_hppa_finish_dynamic_sections, but we
1812 must add the entries now so that we get the correct size for
1813 the .dynamic section. The DT_DEBUG entry is filled in by the
1814 dynamic linker and used by the debugger. */
1817 if (!add_dynamic_entry (DT_DEBUG
, 0)
1818 || !add_dynamic_entry (DT_HP_DLD_HOOK
, 0)
1819 || !add_dynamic_entry (DT_HP_LOAD_MAP
, 0))
1825 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
1826 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
1827 || !add_dynamic_entry (DT_JMPREL
, 0))
1833 if (!add_dynamic_entry (DT_RELA
, 0)
1834 || !add_dynamic_entry (DT_RELASZ
, 0)
1835 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
1841 if (!add_dynamic_entry (DT_TEXTREL
, 0))
1843 info
->flags
|= DF_TEXTREL
;
1846 #undef add_dynamic_entry
1851 /* Called after we have output the symbol into the dynamic symbol
1852 table, but before we output the symbol into the normal symbol
1855 For some symbols we had to change their address when outputting
1856 the dynamic symbol table. We undo that change here so that
1857 the symbols have their expected value in the normal symbol
1861 elf64_hppa_link_output_symbol_hook (abfd
, info
, name
, sym
, input_sec
)
1862 bfd
*abfd ATTRIBUTE_UNUSED
;
1863 struct bfd_link_info
*info
;
1865 Elf_Internal_Sym
*sym
;
1866 asection
*input_sec ATTRIBUTE_UNUSED
;
1868 struct elf64_hppa_link_hash_table
*hppa_info
;
1869 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1871 /* We may be called with the file symbol or section symbols.
1872 They never need munging, so it is safe to ignore them. */
1876 /* Get the PA dyn_symbol (if any) associated with NAME. */
1877 hppa_info
= elf64_hppa_hash_table (info
);
1878 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1879 name
, false, false);
1881 /* Function symbols for which we created .opd entries *may* have been
1882 munged by finish_dynamic_symbol and have to be un-munged here.
1884 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1885 into non-dynamic ones, so we initialize st_shndx to -1 in
1886 mark_exported_functions and check to see if it was overwritten
1887 here instead of just checking dyn_h->h->dynindx. */
1888 if (dyn_h
&& dyn_h
->want_opd
&& dyn_h
->st_shndx
!= -1)
1890 /* Restore the saved value and section index. */
1891 sym
->st_value
= dyn_h
->st_value
;
1892 sym
->st_shndx
= dyn_h
->st_shndx
;
1898 /* Finish up dynamic symbol handling. We set the contents of various
1899 dynamic sections here. */
1902 elf64_hppa_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1904 struct bfd_link_info
*info
;
1905 struct elf_link_hash_entry
*h
;
1906 Elf_Internal_Sym
*sym
;
1908 asection
*stub
, *splt
, *sdlt
, *sopd
, *spltrel
, *sdltrel
;
1909 struct elf64_hppa_link_hash_table
*hppa_info
;
1910 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1912 hppa_info
= elf64_hppa_hash_table (info
);
1913 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1914 h
->root
.root
.string
, false, false);
1916 stub
= hppa_info
->stub_sec
;
1917 splt
= hppa_info
->plt_sec
;
1918 sdlt
= hppa_info
->dlt_sec
;
1919 sopd
= hppa_info
->opd_sec
;
1920 spltrel
= hppa_info
->plt_rel_sec
;
1921 sdltrel
= hppa_info
->dlt_rel_sec
;
1923 BFD_ASSERT (stub
!= NULL
&& splt
!= NULL
1924 && sopd
!= NULL
&& sdlt
!= NULL
)
1926 /* Incredible. It is actually necessary to NOT use the symbol's real
1927 value when building the dynamic symbol table for a shared library.
1928 At least for symbols that refer to functions.
1930 We will store a new value and section index into the symbol long
1931 enough to output it into the dynamic symbol table, then we restore
1932 the original values (in elf64_hppa_link_output_symbol_hook). */
1933 if (dyn_h
&& dyn_h
->want_opd
)
1935 /* Save away the original value and section index so that we
1936 can restore them later. */
1937 dyn_h
->st_value
= sym
->st_value
;
1938 dyn_h
->st_shndx
= sym
->st_shndx
;
1940 /* For the dynamic symbol table entry, we want the value to be
1941 address of this symbol's entry within the .opd section. */
1942 sym
->st_value
= (dyn_h
->opd_offset
1943 + sopd
->output_offset
1944 + sopd
->output_section
->vma
);
1945 sym
->st_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
1946 sopd
->output_section
);
1949 /* Initialize a .plt entry if requested. */
1950 if (dyn_h
&& dyn_h
->want_plt
1951 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1954 Elf_Internal_Rela rel
;
1956 /* We do not actually care about the value in the PLT entry
1957 if we are creating a shared library and the symbol is
1958 still undefined, we create a dynamic relocation to fill
1959 in the correct value. */
1960 if (info
->shared
&& h
->root
.type
== bfd_link_hash_undefined
)
1963 value
= (h
->root
.u
.def
.value
+ h
->root
.u
.def
.section
->vma
);
1965 /* Fill in the entry in the procedure linkage table.
1967 The format of a plt entry is
1970 plt_offset is the offset within the PLT section at which to
1971 install the PLT entry.
1973 We are modifying the in-memory PLT contents here, so we do not add
1974 in the output_offset of the PLT section. */
1976 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
);
1977 value
= _bfd_get_gp_value (splt
->output_section
->owner
);
1978 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
+ 0x8);
1980 /* Create a dynamic IPLT relocation for this entry.
1982 We are creating a relocation in the output file's PLT section,
1983 which is included within the DLT secton. So we do need to include
1984 the PLT's output_offset in the computation of the relocation's
1986 rel
.r_offset
= (dyn_h
->plt_offset
+ splt
->output_offset
1987 + splt
->output_section
->vma
);
1988 rel
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
1991 bfd_elf64_swap_reloca_out (splt
->output_section
->owner
, &rel
,
1992 (((Elf64_External_Rela
*)
1994 + spltrel
->reloc_count
));
1995 spltrel
->reloc_count
++;
1998 /* Initialize an external call stub entry if requested. */
1999 if (dyn_h
&& dyn_h
->want_stub
2000 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
2004 unsigned int max_offset
;
2006 /* Install the generic stub template.
2008 We are modifying the contents of the stub section, so we do not
2009 need to include the stub section's output_offset here. */
2010 memcpy (stub
->contents
+ dyn_h
->stub_offset
, plt_stub
, sizeof (plt_stub
));
2012 /* Fix up the first ldd instruction.
2014 We are modifying the contents of the STUB section in memory,
2015 so we do not need to include its output offset in this computation.
2017 Note the plt_offset value is the value of the PLT entry relative to
2018 the start of the PLT section. These instructions will reference
2019 data relative to the value of __gp, which may not necessarily have
2020 the same address as the start of the PLT section.
2022 gp_offset contains the offset of __gp within the PLT section. */
2023 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
;
2025 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
);
2026 if (output_bfd
->arch_info
->mach
>= 25)
2028 /* Wide mode allows 16 bit offsets. */
2031 insn
|= re_assemble_16 ((int) value
);
2037 insn
|= re_assemble_14 ((int) value
);
2040 if ((value
& 7) || value
+ max_offset
>= 2*max_offset
- 8)
2042 (*_bfd_error_handler
) (_("stub entry for %s cannot load .plt, dp offset = %ld"),
2048 bfd_put_32 (stub
->owner
, (bfd_vma
) insn
,
2049 stub
->contents
+ dyn_h
->stub_offset
);
2051 /* Fix up the second ldd instruction. */
2053 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
+ 8);
2054 if (output_bfd
->arch_info
->mach
>= 25)
2057 insn
|= re_assemble_16 ((int) value
);
2062 insn
|= re_assemble_14 ((int) value
);
2064 bfd_put_32 (stub
->owner
, (bfd_vma
) insn
,
2065 stub
->contents
+ dyn_h
->stub_offset
+ 8);
2068 /* Millicode symbols should not be put in the dynamic
2069 symbol table under any circumstances. */
2070 if (ELF_ST_TYPE (sym
->st_info
) == STT_PARISC_MILLI
)
2076 /* The .opd section contains FPTRs for each function this file
2077 exports. Initialize the FPTR entries. */
2080 elf64_hppa_finalize_opd (dyn_h
, data
)
2081 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2084 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2085 struct elf64_hppa_link_hash_table
*hppa_info
;
2086 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2090 hppa_info
= elf64_hppa_hash_table (info
);
2091 sopd
= hppa_info
->opd_sec
;
2092 sopdrel
= hppa_info
->opd_rel_sec
;
2094 if (h
&& dyn_h
&& dyn_h
->want_opd
)
2098 /* The first two words of an .opd entry are zero.
2100 We are modifying the contents of the OPD section in memory, so we
2101 do not need to include its output offset in this computation. */
2102 memset (sopd
->contents
+ dyn_h
->opd_offset
, 0, 16);
2104 value
= (h
->root
.u
.def
.value
2105 + h
->root
.u
.def
.section
->output_section
->vma
2106 + h
->root
.u
.def
.section
->output_offset
);
2108 /* The next word is the address of the function. */
2109 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 16);
2111 /* The last word is our local __gp value. */
2112 value
= _bfd_get_gp_value (sopd
->output_section
->owner
);
2113 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 24);
2116 /* If we are generating a shared library, we must generate EPLT relocations
2117 for each entry in the .opd, even for static functions (they may have
2118 had their address taken). */
2119 if (info
->shared
&& dyn_h
&& dyn_h
->want_opd
)
2121 Elf64_Internal_Rela rel
;
2124 /* We may need to do a relocation against a local symbol, in
2125 which case we have to look up it's dynamic symbol index off
2126 the local symbol hash table. */
2127 if (h
&& h
->dynindx
!= -1)
2128 dynindx
= h
->dynindx
;
2131 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2134 /* The offset of this relocation is the absolute address of the
2135 .opd entry for this symbol. */
2136 rel
.r_offset
= (dyn_h
->opd_offset
+ sopd
->output_offset
2137 + sopd
->output_section
->vma
);
2139 /* If H is non-null, then we have an external symbol.
2141 It is imperative that we use a different dynamic symbol for the
2142 EPLT relocation if the symbol has global scope.
2144 In the dynamic symbol table, the function symbol will have a value
2145 which is address of the function's .opd entry.
2147 Thus, we can not use that dynamic symbol for the EPLT relocation
2148 (if we did, the data in the .opd would reference itself rather
2149 than the actual address of the function). Instead we have to use
2150 a new dynamic symbol which has the same value as the original global
2153 We prefix the original symbol with a "." and use the new symbol in
2154 the EPLT relocation. This new symbol has already been recorded in
2155 the symbol table, we just have to look it up and use it.
2157 We do not have such problems with static functions because we do
2158 not make their addresses in the dynamic symbol table point to
2159 the .opd entry. Ultimately this should be safe since a static
2160 function can not be directly referenced outside of its shared
2163 We do have to play similar games for FPTR relocations in shared
2164 libraries, including those for static symbols. See the FPTR
2165 handling in elf64_hppa_finalize_dynreloc. */
2169 struct elf_link_hash_entry
*nh
;
2171 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
2173 strcpy (new_name
+ 1, h
->root
.root
.string
);
2175 nh
= elf_link_hash_lookup (elf_hash_table (info
),
2176 new_name
, false, false, false);
2178 /* All we really want from the new symbol is its dynamic
2180 dynindx
= nh
->dynindx
;
2184 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_EPLT
);
2186 bfd_elf64_swap_reloca_out (sopd
->output_section
->owner
, &rel
,
2187 (((Elf64_External_Rela
*)
2189 + sopdrel
->reloc_count
));
2190 sopdrel
->reloc_count
++;
2195 /* The .dlt section contains addresses for items referenced through the
2196 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2197 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2200 elf64_hppa_finalize_dlt (dyn_h
, data
)
2201 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2204 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2205 struct elf64_hppa_link_hash_table
*hppa_info
;
2206 asection
*sdlt
, *sdltrel
;
2207 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2209 hppa_info
= elf64_hppa_hash_table (info
);
2211 sdlt
= hppa_info
->dlt_sec
;
2212 sdltrel
= hppa_info
->dlt_rel_sec
;
2214 /* H/DYN_H may refer to a local variable and we know it's
2215 address, so there is no need to create a relocation. Just install
2216 the proper value into the DLT, note this shortcut can not be
2217 skipped when building a shared library. */
2218 if (! info
->shared
&& h
&& dyn_h
&& dyn_h
->want_dlt
)
2222 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2223 to point to the FPTR entry in the .opd section.
2225 We include the OPD's output offset in this computation as
2226 we are referring to an absolute address in the resulting
2228 if (dyn_h
->want_opd
)
2230 value
= (dyn_h
->opd_offset
2231 + hppa_info
->opd_sec
->output_offset
2232 + hppa_info
->opd_sec
->output_section
->vma
);
2236 value
= (h
->root
.u
.def
.value
2237 + h
->root
.u
.def
.section
->output_offset
);
2239 if (h
->root
.u
.def
.section
->output_section
)
2240 value
+= h
->root
.u
.def
.section
->output_section
->vma
;
2242 value
+= h
->root
.u
.def
.section
->vma
;
2245 /* We do not need to include the output offset of the DLT section
2246 here because we are modifying the in-memory contents. */
2247 bfd_put_64 (sdlt
->owner
, value
, sdlt
->contents
+ dyn_h
->dlt_offset
);
2250 /* Create a relocation for the DLT entry assocated with this symbol.
2251 When building a shared library the symbol does not have to be dynamic. */
2253 && (elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
) || info
->shared
))
2255 Elf64_Internal_Rela rel
;
2258 /* We may need to do a relocation against a local symbol, in
2259 which case we have to look up it's dynamic symbol index off
2260 the local symbol hash table. */
2261 if (h
&& h
->dynindx
!= -1)
2262 dynindx
= h
->dynindx
;
2265 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2268 /* Create a dynamic relocation for this entry. Do include the output
2269 offset of the DLT entry since we need an absolute address in the
2270 resulting object file. */
2271 rel
.r_offset
= (dyn_h
->dlt_offset
+ sdlt
->output_offset
2272 + sdlt
->output_section
->vma
);
2273 if (h
&& h
->type
== STT_FUNC
)
2274 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_FPTR64
);
2276 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_DIR64
);
2279 bfd_elf64_swap_reloca_out (sdlt
->output_section
->owner
, &rel
,
2280 (((Elf64_External_Rela
*)
2282 + sdltrel
->reloc_count
));
2283 sdltrel
->reloc_count
++;
2288 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2289 for dynamic functions used to initialize static data. */
2292 elf64_hppa_finalize_dynreloc (dyn_h
, data
)
2293 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2296 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2297 struct elf64_hppa_link_hash_table
*hppa_info
;
2298 struct elf_link_hash_entry
*h
;
2301 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
);
2303 if (!dynamic_symbol
&& !info
->shared
)
2306 if (dyn_h
->reloc_entries
)
2308 struct elf64_hppa_dyn_reloc_entry
*rent
;
2311 hppa_info
= elf64_hppa_hash_table (info
);
2314 /* We may need to do a relocation against a local symbol, in
2315 which case we have to look up it's dynamic symbol index off
2316 the local symbol hash table. */
2317 if (h
&& h
->dynindx
!= -1)
2318 dynindx
= h
->dynindx
;
2321 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2324 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
2326 Elf64_Internal_Rela rel
;
2330 case R_PARISC_FPTR64
:
2331 /* Allocate one iff we are not building a shared library and
2332 !want_opd, which by this point will be true only if we're
2333 actually allocating one statically in the main executable. */
2334 if (!info
->shared
&& dyn_h
->want_opd
)
2339 /* Create a dynamic relocation for this entry.
2341 We need the output offset for the reloc's section because
2342 we are creating an absolute address in the resulting object
2344 rel
.r_offset
= (rent
->offset
+ rent
->sec
->output_offset
2345 + rent
->sec
->output_section
->vma
);
2347 /* An FPTR64 relocation implies that we took the address of
2348 a function and that the function has an entry in the .opd
2349 section. We want the FPTR64 relocation to reference the
2352 We could munge the symbol value in the dynamic symbol table
2353 (in fact we already do for functions with global scope) to point
2354 to the .opd entry. Then we could use that dynamic symbol in
2357 Or we could do something sensible, not munge the symbol's
2358 address and instead just use a different symbol to reference
2359 the .opd entry. At least that seems sensible until you
2360 realize there's no local dynamic symbols we can use for that
2361 purpose. Thus the hair in the check_relocs routine.
2363 We use a section symbol recorded by check_relocs as the
2364 base symbol for the relocation. The addend is the difference
2365 between the section symbol and the address of the .opd entry. */
2366 if (info
->shared
&& rent
->type
== R_PARISC_FPTR64
)
2368 bfd_vma value
, value2
;
2370 /* First compute the address of the opd entry for this symbol. */
2371 value
= (dyn_h
->opd_offset
2372 + hppa_info
->opd_sec
->output_section
->vma
2373 + hppa_info
->opd_sec
->output_offset
);
2375 /* Compute the value of the start of the section with
2377 value2
= (rent
->sec
->output_section
->vma
2378 + rent
->sec
->output_offset
);
2380 /* Compute the difference between the start of the section
2381 with the relocation and the opd entry. */
2384 /* The result becomes the addend of the relocation. */
2385 rel
.r_addend
= value
;
2387 /* The section symbol becomes the symbol for the dynamic
2390 = _bfd_elf_link_lookup_local_dynindx (info
,
2395 rel
.r_addend
= rent
->addend
;
2397 rel
.r_info
= ELF64_R_INFO (dynindx
, rent
->type
);
2399 bfd_elf64_swap_reloca_out (hppa_info
->other_rel_sec
->output_section
->owner
,
2401 (((Elf64_External_Rela
*)
2402 hppa_info
->other_rel_sec
->contents
)
2403 + hppa_info
->other_rel_sec
->reloc_count
));
2404 hppa_info
->other_rel_sec
->reloc_count
++;
2411 /* Finish up the dynamic sections. */
2414 elf64_hppa_finish_dynamic_sections (output_bfd
, info
)
2416 struct bfd_link_info
*info
;
2420 struct elf64_hppa_link_hash_table
*hppa_info
;
2422 hppa_info
= elf64_hppa_hash_table (info
);
2424 /* Finalize the contents of the .opd section. */
2425 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2426 elf64_hppa_finalize_opd
,
2429 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2430 elf64_hppa_finalize_dynreloc
,
2433 /* Finalize the contents of the .dlt section. */
2434 dynobj
= elf_hash_table (info
)->dynobj
;
2435 /* Finalize the contents of the .dlt section. */
2436 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2437 elf64_hppa_finalize_dlt
,
2440 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2442 if (elf_hash_table (info
)->dynamic_sections_created
)
2444 Elf64_External_Dyn
*dyncon
, *dynconend
;
2446 BFD_ASSERT (sdyn
!= NULL
);
2448 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2449 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2450 for (; dyncon
< dynconend
; dyncon
++)
2452 Elf_Internal_Dyn dyn
;
2455 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2462 case DT_HP_LOAD_MAP
:
2463 /* Compute the absolute address of 16byte scratchpad area
2464 for the dynamic linker.
2466 By convention the linker script will allocate the scratchpad
2467 area at the start of the .data section. So all we have to
2468 to is find the start of the .data section. */
2469 s
= bfd_get_section_by_name (output_bfd
, ".data");
2470 dyn
.d_un
.d_ptr
= s
->vma
;
2471 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2475 /* HP's use PLTGOT to set the GOT register. */
2476 dyn
.d_un
.d_ptr
= _bfd_get_gp_value (output_bfd
);
2477 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2481 s
= hppa_info
->plt_rel_sec
;
2482 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2483 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2487 s
= hppa_info
->plt_rel_sec
;
2488 dyn
.d_un
.d_val
= s
->_raw_size
;
2489 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2493 s
= hppa_info
->other_rel_sec
;
2495 s
= hppa_info
->dlt_rel_sec
;
2496 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2497 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2501 s
= hppa_info
->other_rel_sec
;
2502 dyn
.d_un
.d_val
= s
->_raw_size
;
2503 s
= hppa_info
->dlt_rel_sec
;
2504 dyn
.d_un
.d_val
+= s
->_raw_size
;
2505 s
= hppa_info
->opd_rel_sec
;
2506 dyn
.d_un
.d_val
+= s
->_raw_size
;
2507 /* There is some question about whether or not the size of
2508 the PLT relocs should be included here. HP's tools do
2509 it, so we'll emulate them. */
2510 s
= hppa_info
->plt_rel_sec
;
2511 dyn
.d_un
.d_val
+= s
->_raw_size
;
2512 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2522 /* Return the number of additional phdrs we will need.
2524 The generic ELF code only creates PT_PHDRs for executables. The HP
2525 dynamic linker requires PT_PHDRs for dynamic libraries too.
2527 This routine indicates that the backend needs one additional program
2528 header for that case.
2530 Note we do not have access to the link info structure here, so we have
2531 to guess whether or not we are building a shared library based on the
2532 existence of a .interp section. */
2535 elf64_hppa_additional_program_headers (abfd
)
2540 /* If we are creating a shared library, then we have to create a
2541 PT_PHDR segment. HP's dynamic linker chokes without it. */
2542 s
= bfd_get_section_by_name (abfd
, ".interp");
2548 /* Allocate and initialize any program headers required by this
2551 The generic ELF code only creates PT_PHDRs for executables. The HP
2552 dynamic linker requires PT_PHDRs for dynamic libraries too.
2554 This allocates the PT_PHDR and initializes it in a manner suitable
2557 Note we do not have access to the link info structure here, so we have
2558 to guess whether or not we are building a shared library based on the
2559 existence of a .interp section. */
2562 elf64_hppa_modify_segment_map (abfd
)
2565 struct elf_segment_map
*m
;
2568 s
= bfd_get_section_by_name (abfd
, ".interp");
2571 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2572 if (m
->p_type
== PT_PHDR
)
2576 m
= ((struct elf_segment_map
*)
2577 bfd_zalloc (abfd
, (bfd_size_type
) sizeof *m
));
2581 m
->p_type
= PT_PHDR
;
2582 m
->p_flags
= PF_R
| PF_X
;
2583 m
->p_flags_valid
= 1;
2584 m
->p_paddr_valid
= 1;
2585 m
->includes_phdrs
= 1;
2587 m
->next
= elf_tdata (abfd
)->segment_map
;
2588 elf_tdata (abfd
)->segment_map
= m
;
2592 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2593 if (m
->p_type
== PT_LOAD
)
2597 for (i
= 0; i
< m
->count
; i
++)
2599 /* The code "hint" is not really a hint. It is a requirement
2600 for certain versions of the HP dynamic linker. Worse yet,
2601 it must be set even if the shared library does not have
2602 any code in its "text" segment (thus the check for .hash
2603 to catch this situation). */
2604 if (m
->sections
[i
]->flags
& SEC_CODE
2605 || (strcmp (m
->sections
[i
]->name
, ".hash") == 0))
2606 m
->p_flags
|= (PF_X
| PF_HP_CODE
);
2613 /* Called when writing out an object file to decide the type of a
2616 elf64_hppa_elf_get_symbol_type (elf_sym
, type
)
2617 Elf_Internal_Sym
*elf_sym
;
2620 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_PARISC_MILLI
)
2621 return STT_PARISC_MILLI
;
2626 /* The hash bucket size is the standard one, namely 4. */
2628 const struct elf_size_info hppa64_elf_size_info
=
2630 sizeof (Elf64_External_Ehdr
),
2631 sizeof (Elf64_External_Phdr
),
2632 sizeof (Elf64_External_Shdr
),
2633 sizeof (Elf64_External_Rel
),
2634 sizeof (Elf64_External_Rela
),
2635 sizeof (Elf64_External_Sym
),
2636 sizeof (Elf64_External_Dyn
),
2637 sizeof (Elf_External_Note
),
2641 ELFCLASS64
, EV_CURRENT
,
2642 bfd_elf64_write_out_phdrs
,
2643 bfd_elf64_write_shdrs_and_ehdr
,
2644 bfd_elf64_write_relocs
,
2645 bfd_elf64_swap_symbol_out
,
2646 bfd_elf64_slurp_reloc_table
,
2647 bfd_elf64_slurp_symbol_table
,
2648 bfd_elf64_swap_dyn_in
,
2649 bfd_elf64_swap_dyn_out
,
2656 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2657 #define TARGET_BIG_NAME "elf64-hppa"
2658 #define ELF_ARCH bfd_arch_hppa
2659 #define ELF_MACHINE_CODE EM_PARISC
2660 /* This is not strictly correct. The maximum page size for PA2.0 is
2661 64M. But everything still uses 4k. */
2662 #define ELF_MAXPAGESIZE 0x1000
2663 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2664 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2665 #define elf_info_to_howto elf_hppa_info_to_howto
2666 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2668 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2669 #define elf_backend_object_p elf64_hppa_object_p
2670 #define elf_backend_final_write_processing \
2671 elf_hppa_final_write_processing
2672 #define elf_backend_fake_sections elf_hppa_fake_sections
2673 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2675 #define elf_backend_relocate_section elf_hppa_relocate_section
2677 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2679 #define elf_backend_create_dynamic_sections \
2680 elf64_hppa_create_dynamic_sections
2681 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2683 #define elf_backend_adjust_dynamic_symbol \
2684 elf64_hppa_adjust_dynamic_symbol
2686 #define elf_backend_size_dynamic_sections \
2687 elf64_hppa_size_dynamic_sections
2689 #define elf_backend_finish_dynamic_symbol \
2690 elf64_hppa_finish_dynamic_symbol
2691 #define elf_backend_finish_dynamic_sections \
2692 elf64_hppa_finish_dynamic_sections
2694 /* Stuff for the BFD linker: */
2695 #define bfd_elf64_bfd_link_hash_table_create \
2696 elf64_hppa_hash_table_create
2698 #define elf_backend_check_relocs \
2699 elf64_hppa_check_relocs
2701 #define elf_backend_size_info \
2702 hppa64_elf_size_info
2704 #define elf_backend_additional_program_headers \
2705 elf64_hppa_additional_program_headers
2707 #define elf_backend_modify_segment_map \
2708 elf64_hppa_modify_segment_map
2710 #define elf_backend_link_output_symbol_hook \
2711 elf64_hppa_link_output_symbol_hook
2713 #define elf_backend_want_got_plt 0
2714 #define elf_backend_plt_readonly 0
2715 #define elf_backend_want_plt_sym 0
2716 #define elf_backend_got_header_size 0
2717 #define elf_backend_plt_header_size 0
2718 #define elf_backend_type_change_ok true
2719 #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type
2721 #include "elf64-target.h"
2723 #undef TARGET_BIG_SYM
2724 #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec
2725 #undef TARGET_BIG_NAME
2726 #define TARGET_BIG_NAME "elf64-hppa-linux"
2728 #define INCLUDED_TARGET_FILE 1
2729 #include "elf64-target.h"