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. */
65 unsigned long sym_indx
;
68 /* Dynamic symbols may need to have two different values. One for
69 the dynamic symbol table, one for the normal symbol table.
71 In such cases we store the symbol's real value and section
72 index here so we can restore the real value before we write
73 the normal symbol table. */
77 /* Used to count non-got, non-plt relocations for delayed sizing
78 of relocation sections. */
79 struct elf64_hppa_dyn_reloc_entry
81 /* Next relocation in the chain. */
82 struct elf64_hppa_dyn_reloc_entry
*next
;
84 /* The type of the relocation. */
87 /* The input section of the relocation. */
90 /* The index of the section symbol for the input section of
91 the relocation. Only needed when building shared libraries. */
94 /* The offset within the input section of the relocation. */
97 /* The addend for the relocation. */
102 /* Nonzero if this symbol needs an entry in one of the linker
110 struct elf64_hppa_dyn_hash_table
112 struct bfd_hash_table root
;
115 struct elf64_hppa_link_hash_table
117 struct elf_link_hash_table root
;
119 /* Shortcuts to get to the various linker defined sections. */
121 asection
*dlt_rel_sec
;
123 asection
*plt_rel_sec
;
125 asection
*opd_rel_sec
;
126 asection
*other_rel_sec
;
128 /* Offset of __gp within .plt section. When the PLT gets large we want
129 to slide __gp into the PLT section so that we can continue to use
130 single DP relative instructions to load values out of the PLT. */
133 /* Note this is not strictly correct. We should create a stub section for
134 each input section with calls. The stub section should be placed before
135 the section with the call. */
138 bfd_vma text_segment_base
;
139 bfd_vma data_segment_base
;
141 struct elf64_hppa_dyn_hash_table dyn_hash_table
;
143 /* We build tables to map from an input section back to its
144 symbol index. This is the BFD for which we currently have
146 bfd
*section_syms_bfd
;
148 /* Array of symbol numbers for each input section attached to the
153 #define elf64_hppa_hash_table(p) \
154 ((struct elf64_hppa_link_hash_table *) ((p)->hash))
156 typedef struct bfd_hash_entry
*(*new_hash_entry_func
)
157 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
159 static boolean elf64_hppa_dyn_hash_table_init
160 PARAMS ((struct elf64_hppa_dyn_hash_table
*ht
, bfd
*abfd
,
161 new_hash_entry_func
new));
162 static struct bfd_hash_entry
*elf64_hppa_new_dyn_hash_entry
163 PARAMS ((struct bfd_hash_entry
*entry
, struct bfd_hash_table
*table
,
164 const char *string
));
165 static struct bfd_link_hash_table
*elf64_hppa_hash_table_create
166 PARAMS ((bfd
*abfd
));
167 static struct elf64_hppa_dyn_hash_entry
*elf64_hppa_dyn_hash_lookup
168 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
, const char *string
,
169 boolean create
, boolean copy
));
170 static void elf64_hppa_dyn_hash_traverse
171 PARAMS ((struct elf64_hppa_dyn_hash_table
*table
,
172 boolean (*func
) (struct elf64_hppa_dyn_hash_entry
*, PTR
),
175 static const char *get_dyn_name
176 PARAMS ((asection
*, struct elf_link_hash_entry
*,
177 const Elf_Internal_Rela
*, char **, size_t *));
179 /* This must follow the definitions of the various derived linker
180 hash tables and shared functions. */
181 #include "elf-hppa.h"
183 static boolean elf64_hppa_object_p
186 static boolean elf64_hppa_section_from_shdr
187 PARAMS ((bfd
*, Elf64_Internal_Shdr
*, char *));
189 static void elf64_hppa_post_process_headers
190 PARAMS ((bfd
*, struct bfd_link_info
*));
192 static boolean elf64_hppa_create_dynamic_sections
193 PARAMS ((bfd
*, struct bfd_link_info
*));
195 static boolean elf64_hppa_adjust_dynamic_symbol
196 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
198 static boolean elf64_hppa_size_dynamic_sections
199 PARAMS ((bfd
*, struct bfd_link_info
*));
201 static boolean elf64_hppa_finish_dynamic_symbol
202 PARAMS ((bfd
*, struct bfd_link_info
*,
203 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
205 static boolean elf64_hppa_finish_dynamic_sections
206 PARAMS ((bfd
*, struct bfd_link_info
*));
208 static boolean elf64_hppa_check_relocs
209 PARAMS ((bfd
*, struct bfd_link_info
*,
210 asection
*, const Elf_Internal_Rela
*));
212 static boolean elf64_hppa_dynamic_symbol_p
213 PARAMS ((struct elf_link_hash_entry
*, struct bfd_link_info
*));
215 static boolean elf64_hppa_mark_exported_functions
216 PARAMS ((struct elf_link_hash_entry
*, PTR
));
218 static boolean elf64_hppa_finalize_opd
219 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
221 static boolean elf64_hppa_finalize_dlt
222 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
224 static boolean allocate_global_data_dlt
225 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
227 static boolean allocate_global_data_plt
228 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
230 static boolean allocate_global_data_stub
231 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
233 static boolean allocate_global_data_opd
234 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
236 static boolean get_reloc_section
237 PARAMS ((bfd
*, struct elf64_hppa_link_hash_table
*, asection
*));
239 static boolean count_dyn_reloc
240 PARAMS ((bfd
*, struct elf64_hppa_dyn_hash_entry
*,
241 int, asection
*, int, bfd_vma
, bfd_vma
));
243 static boolean allocate_dynrel_entries
244 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
246 static boolean elf64_hppa_finalize_dynreloc
247 PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
249 static boolean get_opd
250 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
252 static boolean get_plt
253 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
255 static boolean get_dlt
256 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
258 static boolean get_stub
259 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf64_hppa_link_hash_table
*));
261 static int elf64_hppa_elf_get_symbol_type
262 PARAMS ((Elf_Internal_Sym
*, int));
265 elf64_hppa_dyn_hash_table_init (ht
, abfd
, new)
266 struct elf64_hppa_dyn_hash_table
*ht
;
267 bfd
*abfd ATTRIBUTE_UNUSED
;
268 new_hash_entry_func
new;
270 memset (ht
, 0, sizeof (*ht
));
271 return bfd_hash_table_init (&ht
->root
, new);
274 static struct bfd_hash_entry
*
275 elf64_hppa_new_dyn_hash_entry (entry
, table
, string
)
276 struct bfd_hash_entry
*entry
;
277 struct bfd_hash_table
*table
;
280 struct elf64_hppa_dyn_hash_entry
*ret
;
281 ret
= (struct elf64_hppa_dyn_hash_entry
*) entry
;
283 /* Allocate the structure if it has not already been allocated by a
286 ret
= bfd_hash_allocate (table
, sizeof (*ret
));
291 /* Initialize our local data. All zeros, and definitely easier
292 than setting 8 bit fields. */
293 memset (ret
, 0, sizeof (*ret
));
295 /* Call the allocation method of the superclass. */
296 ret
= ((struct elf64_hppa_dyn_hash_entry
*)
297 bfd_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
));
302 /* Create the derived linker hash table. The PA64 ELF port uses this
303 derived hash table to keep information specific to the PA ElF
304 linker (without using static variables). */
306 static struct bfd_link_hash_table
*
307 elf64_hppa_hash_table_create (abfd
)
310 struct elf64_hppa_link_hash_table
*ret
;
312 ret
= bfd_zalloc (abfd
, sizeof (*ret
));
315 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
316 _bfd_elf_link_hash_newfunc
))
318 bfd_release (abfd
, ret
);
322 if (!elf64_hppa_dyn_hash_table_init (&ret
->dyn_hash_table
, abfd
,
323 elf64_hppa_new_dyn_hash_entry
))
325 return &ret
->root
.root
;
328 /* Look up an entry in a PA64 ELF linker hash table. */
330 static struct elf64_hppa_dyn_hash_entry
*
331 elf64_hppa_dyn_hash_lookup(table
, string
, create
, copy
)
332 struct elf64_hppa_dyn_hash_table
*table
;
334 boolean create
, copy
;
336 return ((struct elf64_hppa_dyn_hash_entry
*)
337 bfd_hash_lookup (&table
->root
, string
, create
, copy
));
340 /* Traverse a PA64 ELF linker hash table. */
343 elf64_hppa_dyn_hash_traverse (table
, func
, info
)
344 struct elf64_hppa_dyn_hash_table
*table
;
345 boolean (*func
) PARAMS ((struct elf64_hppa_dyn_hash_entry
*, PTR
));
350 (boolean (*) PARAMS ((struct bfd_hash_entry
*, PTR
))) func
,
354 /* Return nonzero if ABFD represents a PA2.0 ELF64 file.
356 Additionally we set the default architecture and machine. */
358 elf64_hppa_object_p (abfd
)
361 /* Set the right machine number for an HPPA ELF file. */
362 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
365 /* Given section type (hdr->sh_type), return a boolean indicating
366 whether or not the section is an elf64-hppa specific section. */
368 elf64_hppa_section_from_shdr (abfd
, hdr
, name
)
370 Elf64_Internal_Shdr
*hdr
;
375 switch (hdr
->sh_type
)
378 if (strcmp (name
, ".PARISC.archext") != 0)
381 case SHT_PARISC_UNWIND
:
382 if (strcmp (name
, ".PARISC.unwind") != 0)
386 case SHT_PARISC_ANNOT
:
391 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
393 newsect
= hdr
->bfd_section
;
398 /* Construct a string for use in the elf64_hppa_dyn_hash_table. The
399 name describes what was once potentially anonymous memory. We
400 allocate memory as necessary, possibly reusing PBUF/PLEN. */
403 get_dyn_name (sec
, h
, rel
, pbuf
, plen
)
405 struct elf_link_hash_entry
*h
;
406 const Elf_Internal_Rela
*rel
;
414 if (h
&& rel
->r_addend
== 0)
415 return h
->root
.root
.string
;
418 nlen
= strlen (h
->root
.root
.string
);
420 nlen
= 8 + 1 + sizeof (rel
->r_info
) * 2 - 8;
421 tlen
= nlen
+ 1 + sizeof (rel
->r_addend
) * 2 + 1;
429 *pbuf
= buf
= malloc (tlen
);
437 memcpy (buf
, h
->root
.root
.string
, nlen
);
439 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
443 nlen
= sprintf (buf
, "%x:%lx",
444 sec
->id
& 0xffffffff,
445 (long) ELF64_R_SYM (rel
->r_info
));
449 sprintf_vma (buf
+ nlen
, rel
->r_addend
);
456 /* SEC is a section containing relocs for an input BFD when linking; return
457 a suitable section for holding relocs in the output BFD for a link. */
460 get_reloc_section (abfd
, hppa_info
, sec
)
462 struct elf64_hppa_link_hash_table
*hppa_info
;
465 const char *srel_name
;
469 srel_name
= (bfd_elf_string_from_elf_section
470 (abfd
, elf_elfheader(abfd
)->e_shstrndx
,
471 elf_section_data(sec
)->rel_hdr
.sh_name
));
472 if (srel_name
== NULL
)
475 BFD_ASSERT ((strncmp (srel_name
, ".rela", 5) == 0
476 && strcmp (bfd_get_section_name (abfd
, sec
),
478 || (strncmp (srel_name
, ".rel", 4) == 0
479 && strcmp (bfd_get_section_name (abfd
, sec
),
482 dynobj
= hppa_info
->root
.dynobj
;
484 hppa_info
->root
.dynobj
= dynobj
= abfd
;
486 srel
= bfd_get_section_by_name (dynobj
, srel_name
);
489 srel
= bfd_make_section (dynobj
, srel_name
);
491 || !bfd_set_section_flags (dynobj
, srel
,
498 || !bfd_set_section_alignment (dynobj
, srel
, 3))
502 hppa_info
->other_rel_sec
= srel
;
506 /* Add a new entry to the list of dynamic relocations against DYN_H.
508 We use this to keep a record of all the FPTR relocations against a
509 particular symbol so that we can create FPTR relocations in the
513 count_dyn_reloc (abfd
, dyn_h
, type
, sec
, sec_symndx
, offset
, addend
)
515 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
522 struct elf64_hppa_dyn_reloc_entry
*rent
;
524 rent
= (struct elf64_hppa_dyn_reloc_entry
*)
525 bfd_alloc (abfd
, sizeof (*rent
));
529 rent
->next
= dyn_h
->reloc_entries
;
532 rent
->sec_symndx
= sec_symndx
;
533 rent
->offset
= offset
;
534 rent
->addend
= addend
;
535 dyn_h
->reloc_entries
= rent
;
540 /* Scan the RELOCS and record the type of dynamic entries that each
541 referenced symbol needs. */
544 elf64_hppa_check_relocs (abfd
, info
, sec
, relocs
)
546 struct bfd_link_info
*info
;
548 const Elf_Internal_Rela
*relocs
;
550 struct elf64_hppa_link_hash_table
*hppa_info
;
551 const Elf_Internal_Rela
*relend
;
552 Elf_Internal_Shdr
*symtab_hdr
;
553 const Elf_Internal_Rela
*rel
;
554 asection
*dlt
, *plt
, *stubs
;
559 if (info
->relocateable
)
562 /* If this is the first dynamic object found in the link, create
563 the special sections required for dynamic linking. */
564 if (! elf_hash_table (info
)->dynamic_sections_created
)
566 if (! bfd_elf64_link_create_dynamic_sections (abfd
, info
))
570 hppa_info
= elf64_hppa_hash_table (info
);
571 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
573 /* If necessary, build a new table holding section symbols indices
574 for this BFD. This is disgusting. */
576 if (info
->shared
&& hppa_info
->section_syms_bfd
!= abfd
)
580 Elf_Internal_Sym
*local_syms
, *isym
;
581 Elf64_External_Sym
*ext_syms
, *esym
;
583 /* We're done with the old cache of section index to section symbol
584 index information. Free it.
586 ?!? Note we leak the last section_syms array. Presumably we
587 could free it in one of the later routines in this file. */
588 if (hppa_info
->section_syms
)
589 free (hppa_info
->section_syms
);
591 /* Allocate memory for the internal and external symbols. */
593 = (Elf_Internal_Sym
*) bfd_malloc (symtab_hdr
->sh_info
594 * sizeof (Elf_Internal_Sym
));
595 if (local_syms
== NULL
)
599 = (Elf64_External_Sym
*) bfd_malloc (symtab_hdr
->sh_info
600 * sizeof (Elf64_External_Sym
));
601 if (ext_syms
== NULL
)
607 /* Read in the local symbols. */
608 if (bfd_seek (abfd
, symtab_hdr
->sh_offset
, SEEK_SET
) != 0
609 || bfd_read (ext_syms
, 1,
611 * sizeof (Elf64_External_Sym
)), abfd
)
612 != (symtab_hdr
->sh_info
* sizeof (Elf64_External_Sym
)))
619 /* Swap in the local symbols, also record the highest section index
620 referenced by the local symbols. */
624 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++, esym
++, isym
++)
626 bfd_elf64_swap_symbol_in (abfd
, esym
, isym
);
627 if (isym
->st_shndx
> highest_shndx
)
628 highest_shndx
= isym
->st_shndx
;
631 /* Now we can free the external symbols. */
634 /* Allocate an array to hold the section index to section symbol index
635 mapping. Bump by one since we start counting at zero. */
637 hppa_info
->section_syms
= (int *) bfd_malloc (highest_shndx
640 /* Now walk the local symbols again. If we find a section symbol,
641 record the index of the symbol into the section_syms array. */
642 for (isym
= local_syms
, i
= 0; i
< symtab_hdr
->sh_info
; i
++, isym
++)
644 if (ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
645 hppa_info
->section_syms
[isym
->st_shndx
] = i
;
648 /* We are finished with the local symbols. Get rid of them. */
651 /* Record which BFD we built the section_syms mapping for. */
652 hppa_info
->section_syms_bfd
= abfd
;
655 /* Record the symbol index for this input section. We may need it for
656 relocations when building shared libraries. When not building shared
657 libraries this value is never really used, but assign it to zero to
658 prevent out of bounds memory accesses in other routines. */
661 sec_symndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
663 /* If we did not find a section symbol for this section, then
664 something went terribly wrong above. */
665 if (sec_symndx
== -1)
668 sec_symndx
= hppa_info
->section_syms
[sec_symndx
];
673 dlt
= plt
= stubs
= NULL
;
677 relend
= relocs
+ sec
->reloc_count
;
678 for (rel
= relocs
; rel
< relend
; ++rel
)
688 struct elf_link_hash_entry
*h
= NULL
;
689 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
690 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
692 const char *addr_name
;
693 boolean maybe_dynamic
;
694 int dynrel_type
= R_PARISC_NONE
;
695 static reloc_howto_type
*howto
;
697 if (r_symndx
>= symtab_hdr
->sh_info
)
699 /* We're dealing with a global symbol -- find its hash entry
700 and mark it as being referenced. */
701 long indx
= r_symndx
- symtab_hdr
->sh_info
;
702 h
= elf_sym_hashes (abfd
)[indx
];
703 while (h
->root
.type
== bfd_link_hash_indirect
704 || h
->root
.type
== bfd_link_hash_warning
)
705 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
707 h
->elf_link_hash_flags
|= ELF_LINK_HASH_REF_REGULAR
;
710 /* We can only get preliminary data on whether a symbol is
711 locally or externally defined, as not all of the input files
712 have yet been processed. Do something with what we know, as
713 this may help reduce memory usage and processing time later. */
714 maybe_dynamic
= false;
715 if (h
&& ((info
->shared
&& ! info
->symbolic
)
716 || ! (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
717 || h
->root
.type
== bfd_link_hash_defweak
))
718 maybe_dynamic
= true;
720 howto
= elf_hppa_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
724 /* These are simple indirect references to symbols through the
725 DLT. We need to create a DLT entry for any symbols which
726 appears in a DLTIND relocation. */
727 case R_PARISC_DLTIND21L
:
728 case R_PARISC_DLTIND14R
:
729 case R_PARISC_DLTIND14F
:
730 case R_PARISC_DLTIND14WR
:
731 case R_PARISC_DLTIND14DR
:
732 need_entry
= NEED_DLT
;
735 /* ?!? These need a DLT entry. But I have no idea what to do with
736 the "link time TP value. */
737 case R_PARISC_LTOFF_TP21L
:
738 case R_PARISC_LTOFF_TP14R
:
739 case R_PARISC_LTOFF_TP14F
:
740 case R_PARISC_LTOFF_TP64
:
741 case R_PARISC_LTOFF_TP14WR
:
742 case R_PARISC_LTOFF_TP14DR
:
743 case R_PARISC_LTOFF_TP16F
:
744 case R_PARISC_LTOFF_TP16WF
:
745 case R_PARISC_LTOFF_TP16DF
:
746 need_entry
= NEED_DLT
;
749 /* These are function calls. Depending on their precise target we
750 may need to make a stub for them. The stub uses the PLT, so we
751 need to create PLT entries for these symbols too. */
752 case R_PARISC_PCREL12F
:
753 case R_PARISC_PCREL17F
:
754 case R_PARISC_PCREL22F
:
755 case R_PARISC_PCREL32
:
756 case R_PARISC_PCREL64
:
757 case R_PARISC_PCREL21L
:
758 case R_PARISC_PCREL17R
:
759 case R_PARISC_PCREL17C
:
760 case R_PARISC_PCREL14R
:
761 case R_PARISC_PCREL14F
:
762 case R_PARISC_PCREL22C
:
763 case R_PARISC_PCREL14WR
:
764 case R_PARISC_PCREL14DR
:
765 case R_PARISC_PCREL16F
:
766 case R_PARISC_PCREL16WF
:
767 case R_PARISC_PCREL16DF
:
768 need_entry
= (NEED_PLT
| NEED_STUB
);
771 case R_PARISC_PLTOFF21L
:
772 case R_PARISC_PLTOFF14R
:
773 case R_PARISC_PLTOFF14F
:
774 case R_PARISC_PLTOFF14WR
:
775 case R_PARISC_PLTOFF14DR
:
776 case R_PARISC_PLTOFF16F
:
777 case R_PARISC_PLTOFF16WF
:
778 case R_PARISC_PLTOFF16DF
:
779 need_entry
= (NEED_PLT
);
783 if (info
->shared
|| maybe_dynamic
)
784 need_entry
= (NEED_DYNREL
);
785 dynrel_type
= R_PARISC_DIR64
;
788 /* This is an indirect reference through the DLT to get the address
789 of a OPD descriptor. Thus we need to make a DLT entry that points
791 case R_PARISC_LTOFF_FPTR21L
:
792 case R_PARISC_LTOFF_FPTR14R
:
793 case R_PARISC_LTOFF_FPTR14WR
:
794 case R_PARISC_LTOFF_FPTR14DR
:
795 case R_PARISC_LTOFF_FPTR32
:
796 case R_PARISC_LTOFF_FPTR64
:
797 case R_PARISC_LTOFF_FPTR16F
:
798 case R_PARISC_LTOFF_FPTR16WF
:
799 case R_PARISC_LTOFF_FPTR16DF
:
800 if (info
->shared
|| maybe_dynamic
)
801 need_entry
= (NEED_DLT
| NEED_OPD
);
803 need_entry
= (NEED_DLT
| NEED_OPD
);
804 dynrel_type
= R_PARISC_FPTR64
;
807 /* This is a simple OPD entry. */
808 case R_PARISC_FPTR64
:
809 if (info
->shared
|| maybe_dynamic
)
810 need_entry
= (NEED_OPD
| NEED_DYNREL
);
812 need_entry
= (NEED_OPD
);
813 dynrel_type
= R_PARISC_FPTR64
;
816 /* Add more cases as needed. */
822 /* Collect a canonical name for this address. */
823 addr_name
= get_dyn_name (sec
, h
, rel
, &buf
, &buf_len
);
825 /* Collect the canonical entry data for this address. */
826 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
827 addr_name
, true, true);
830 /* Stash away enough information to be able to find this symbol
831 regardless of whether or not it is local or global. */
834 dyn_h
->sym_indx
= r_symndx
;
836 /* ?!? We may need to do some error checking in here. */
837 /* Create what's needed. */
838 if (need_entry
& NEED_DLT
)
840 if (! hppa_info
->dlt_sec
841 && ! get_dlt (abfd
, info
, hppa_info
))
846 if (need_entry
& NEED_PLT
)
848 if (! hppa_info
->plt_sec
849 && ! get_plt (abfd
, info
, hppa_info
))
854 if (need_entry
& NEED_STUB
)
856 if (! hppa_info
->stub_sec
857 && ! get_stub (abfd
, info
, hppa_info
))
859 dyn_h
->want_stub
= 1;
862 if (need_entry
& NEED_OPD
)
864 if (! hppa_info
->opd_sec
865 && ! get_opd (abfd
, info
, hppa_info
))
870 /* FPTRs are not allocated by the dynamic linker for PA64, though
871 it is possible that will change in the future. */
873 /* This could be a local function that had its address taken, in
874 which case H will be NULL. */
876 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
879 /* Add a new dynamic relocation to the chain of dynamic
880 relocations for this symbol. */
881 if ((need_entry
& NEED_DYNREL
) && (sec
->flags
& SEC_ALLOC
))
883 if (! hppa_info
->other_rel_sec
884 && ! get_reloc_section (abfd
, hppa_info
, sec
))
887 if (!count_dyn_reloc (abfd
, dyn_h
, dynrel_type
, sec
,
888 sec_symndx
, rel
->r_offset
, rel
->r_addend
))
891 /* If we are building a shared library and we just recorded
892 a dynamic R_PARISC_FPTR64 relocation, then make sure the
893 section symbol for this section ends up in the dynamic
895 if (info
->shared
&& dynrel_type
== R_PARISC_FPTR64
896 && ! (_bfd_elf64_link_record_local_dynamic_symbol
897 (info
, abfd
, sec_symndx
)))
912 struct elf64_hppa_allocate_data
914 struct bfd_link_info
*info
;
918 /* Should we do dynamic things to this symbol? */
921 elf64_hppa_dynamic_symbol_p (h
, info
)
922 struct elf_link_hash_entry
*h
;
923 struct bfd_link_info
*info
;
928 while (h
->root
.type
== bfd_link_hash_indirect
929 || h
->root
.type
== bfd_link_hash_warning
)
930 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
932 if (h
->dynindx
== -1)
935 if (h
->root
.type
== bfd_link_hash_undefweak
936 || h
->root
.type
== bfd_link_hash_defweak
)
939 if (h
->root
.root
.string
[0] == '$' && h
->root
.root
.string
[1] == '$')
942 if ((info
->shared
&& !info
->symbolic
)
943 || ((h
->elf_link_hash_flags
944 & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
))
945 == (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
)))
951 /* Mark all funtions exported by this file so that we can later allocate
952 entries in .opd for them. */
955 elf64_hppa_mark_exported_functions (h
, data
)
956 struct elf_link_hash_entry
*h
;
959 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
960 struct elf64_hppa_link_hash_table
*hppa_info
;
962 hppa_info
= elf64_hppa_hash_table (info
);
965 && (h
->root
.type
== bfd_link_hash_defined
966 || h
->root
.type
== bfd_link_hash_defweak
)
967 && h
->root
.u
.def
.section
->output_section
!= NULL
968 && h
->type
== STT_FUNC
)
970 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
972 /* Add this symbol to the PA64 linker hash table. */
973 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
974 h
->root
.root
.string
, true, true);
978 if (! hppa_info
->opd_sec
979 && ! get_opd (hppa_info
->root
.dynobj
, info
, hppa_info
))
983 /* Put a flag here for output_symbol_hook. */
984 dyn_h
->st_shndx
= -1;
985 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
991 /* Allocate space for a DLT entry. */
994 allocate_global_data_dlt (dyn_h
, data
)
995 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
998 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1000 if (dyn_h
->want_dlt
)
1002 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1004 if (x
->info
->shared
)
1006 /* Possibly add the symbol to the local dynamic symbol
1007 table since we might need to create a dynamic relocation
1010 || (h
&& h
->dynindx
== -1))
1013 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1015 if (!_bfd_elf64_link_record_local_dynamic_symbol
1016 (x
->info
, owner
, dyn_h
->sym_indx
))
1021 dyn_h
->dlt_offset
= x
->ofs
;
1022 x
->ofs
+= DLT_ENTRY_SIZE
;
1027 /* Allocate space for a DLT.PLT entry. */
1030 allocate_global_data_plt (dyn_h
, data
)
1031 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1034 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1037 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1038 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1039 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1040 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1042 dyn_h
->plt_offset
= x
->ofs
;
1043 x
->ofs
+= PLT_ENTRY_SIZE
;
1044 if (dyn_h
->plt_offset
< 0x2000)
1045 elf64_hppa_hash_table (x
->info
)->gp_offset
= dyn_h
->plt_offset
;
1048 dyn_h
->want_plt
= 0;
1053 /* Allocate space for a STUB entry. */
1056 allocate_global_data_stub (dyn_h
, data
)
1057 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1060 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1062 if (dyn_h
->want_stub
1063 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
)
1064 && !((dyn_h
->h
->root
.type
== bfd_link_hash_defined
1065 || dyn_h
->h
->root
.type
== bfd_link_hash_defweak
)
1066 && dyn_h
->h
->root
.u
.def
.section
->output_section
!= NULL
))
1068 dyn_h
->stub_offset
= x
->ofs
;
1069 x
->ofs
+= sizeof (plt_stub
);
1072 dyn_h
->want_stub
= 0;
1076 /* Allocate space for a FPTR entry. */
1079 allocate_global_data_opd (dyn_h
, data
)
1080 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1083 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1085 if (dyn_h
->want_opd
)
1087 struct elf_link_hash_entry
*h
= dyn_h
->h
;
1090 while (h
->root
.type
== bfd_link_hash_indirect
1091 || h
->root
.type
== bfd_link_hash_warning
)
1092 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1094 /* We never need an opd entry for a symbol which is not
1095 defined by this output file. */
1096 if (h
&& h
->root
.type
== bfd_link_hash_undefined
)
1097 dyn_h
->want_opd
= 0;
1099 /* If we are creating a shared library, took the address of a local
1100 function or might export this function from this object file, then
1101 we have to create an opd descriptor. */
1102 else if (x
->info
->shared
1105 || ((h
->root
.type
== bfd_link_hash_defined
1106 || h
->root
.type
== bfd_link_hash_defweak
)
1107 && h
->root
.u
.def
.section
->output_section
!= NULL
))
1109 /* If we are creating a shared library, then we will have to
1110 create a runtime relocation for the symbol to properly
1111 initialize the .opd entry. Make sure the symbol gets
1112 added to the dynamic symbol table. */
1114 && (h
== NULL
|| (h
->dynindx
== -1)))
1117 owner
= (h
? h
->root
.u
.def
.section
->owner
: dyn_h
->owner
);
1119 if (!_bfd_elf64_link_record_local_dynamic_symbol
1120 (x
->info
, owner
, dyn_h
->sym_indx
))
1124 /* This may not be necessary or desirable anymore now that
1125 we have some support for dealing with section symbols
1126 in dynamic relocs. But name munging does make the result
1127 much easier to debug. ie, the EPLT reloc will reference
1128 a symbol like .foobar, instead of .text + offset. */
1129 if (x
->info
->shared
&& h
)
1132 struct elf_link_hash_entry
*nh
;
1134 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
1136 strcpy (new_name
+ 1, h
->root
.root
.string
);
1138 nh
= elf_link_hash_lookup (elf_hash_table (x
->info
),
1139 new_name
, true, true, true);
1141 nh
->root
.type
= h
->root
.type
;
1142 nh
->root
.u
.def
.value
= h
->root
.u
.def
.value
;
1143 nh
->root
.u
.def
.section
= h
->root
.u
.def
.section
;
1145 if (! bfd_elf64_link_record_dynamic_symbol (x
->info
, nh
))
1149 dyn_h
->opd_offset
= x
->ofs
;
1150 x
->ofs
+= OPD_ENTRY_SIZE
;
1153 /* Otherwise we do not need an opd entry. */
1155 dyn_h
->want_opd
= 0;
1160 /* HP requires the EI_OSABI field to be filled in. The assignment to
1161 EI_ABIVERSION may not be strictly necessary. */
1164 elf64_hppa_post_process_headers (abfd
, link_info
)
1166 struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
;
1168 Elf_Internal_Ehdr
* i_ehdrp
;
1170 i_ehdrp
= elf_elfheader (abfd
);
1172 if (strcmp (bfd_get_target (abfd
), "elf64-hppa-linux") == 0)
1174 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_LINUX
;
1178 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
1179 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 1;
1183 /* Create function descriptor section (.opd). This section is called .opd
1184 because it contains "official prodecure descriptors". The "official"
1185 refers to the fact that these descriptors are used when taking the address
1186 of a procedure, thus ensuring a unique address for each procedure. */
1189 get_opd (abfd
, info
, hppa_info
)
1191 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1192 struct elf64_hppa_link_hash_table
*hppa_info
;
1197 opd
= hppa_info
->opd_sec
;
1200 dynobj
= hppa_info
->root
.dynobj
;
1202 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1204 opd
= bfd_make_section (dynobj
, ".opd");
1206 || !bfd_set_section_flags (dynobj
, opd
,
1211 | SEC_LINKER_CREATED
))
1212 || !bfd_set_section_alignment (abfd
, opd
, 3))
1218 hppa_info
->opd_sec
= opd
;
1224 /* Create the PLT section. */
1227 get_plt (abfd
, info
, hppa_info
)
1229 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1230 struct elf64_hppa_link_hash_table
*hppa_info
;
1235 plt
= hppa_info
->plt_sec
;
1238 dynobj
= hppa_info
->root
.dynobj
;
1240 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1242 plt
= bfd_make_section (dynobj
, ".plt");
1244 || !bfd_set_section_flags (dynobj
, plt
,
1249 | SEC_LINKER_CREATED
))
1250 || !bfd_set_section_alignment (abfd
, plt
, 3))
1256 hppa_info
->plt_sec
= plt
;
1262 /* Create the DLT section. */
1265 get_dlt (abfd
, info
, hppa_info
)
1267 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1268 struct elf64_hppa_link_hash_table
*hppa_info
;
1273 dlt
= hppa_info
->dlt_sec
;
1276 dynobj
= hppa_info
->root
.dynobj
;
1278 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1280 dlt
= bfd_make_section (dynobj
, ".dlt");
1282 || !bfd_set_section_flags (dynobj
, dlt
,
1287 | SEC_LINKER_CREATED
))
1288 || !bfd_set_section_alignment (abfd
, dlt
, 3))
1294 hppa_info
->dlt_sec
= dlt
;
1300 /* Create the stubs section. */
1303 get_stub (abfd
, info
, hppa_info
)
1305 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1306 struct elf64_hppa_link_hash_table
*hppa_info
;
1311 stub
= hppa_info
->stub_sec
;
1314 dynobj
= hppa_info
->root
.dynobj
;
1316 hppa_info
->root
.dynobj
= dynobj
= abfd
;
1318 stub
= bfd_make_section (dynobj
, ".stub");
1320 || !bfd_set_section_flags (dynobj
, stub
,
1326 | SEC_LINKER_CREATED
))
1327 || !bfd_set_section_alignment (abfd
, stub
, 3))
1333 hppa_info
->stub_sec
= stub
;
1339 /* Create sections necessary for dynamic linking. This is only a rough
1340 cut and will likely change as we learn more about the somewhat
1341 unusual dynamic linking scheme HP uses.
1344 Contains code to implement cross-space calls. The first time one
1345 of the stubs is used it will call into the dynamic linker, later
1346 calls will go straight to the target.
1348 The only stub we support right now looks like
1352 ldd OFFSET+8(%dp),%dp
1354 Other stubs may be needed in the future. We may want the remove
1355 the break/nop instruction. It is only used right now to keep the
1356 offset of a .plt entry and a .stub entry in sync.
1359 This is what most people call the .got. HP used a different name.
1363 Relocations for the DLT.
1366 Function pointers as address,gp pairs.
1369 Should contain dynamic IPLT (and EPLT?) relocations.
1375 EPLT relocations for symbols exported from shared libraries. */
1378 elf64_hppa_create_dynamic_sections (abfd
, info
)
1380 struct bfd_link_info
*info
;
1384 if (! get_stub (abfd
, info
, elf64_hppa_hash_table (info
)))
1387 if (! get_dlt (abfd
, info
, elf64_hppa_hash_table (info
)))
1390 if (! get_plt (abfd
, info
, elf64_hppa_hash_table (info
)))
1393 if (! get_opd (abfd
, info
, elf64_hppa_hash_table (info
)))
1396 s
= bfd_make_section(abfd
, ".rela.dlt");
1398 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1402 | SEC_LINKER_CREATED
))
1403 || !bfd_set_section_alignment (abfd
, s
, 3))
1405 elf64_hppa_hash_table (info
)->dlt_rel_sec
= s
;
1407 s
= bfd_make_section(abfd
, ".rela.plt");
1409 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1413 | SEC_LINKER_CREATED
))
1414 || !bfd_set_section_alignment (abfd
, s
, 3))
1416 elf64_hppa_hash_table (info
)->plt_rel_sec
= s
;
1418 s
= bfd_make_section(abfd
, ".rela.data");
1420 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1424 | SEC_LINKER_CREATED
))
1425 || !bfd_set_section_alignment (abfd
, s
, 3))
1427 elf64_hppa_hash_table (info
)->other_rel_sec
= s
;
1429 s
= bfd_make_section(abfd
, ".rela.opd");
1431 || !bfd_set_section_flags (abfd
, s
, (SEC_ALLOC
| SEC_LOAD
1435 | SEC_LINKER_CREATED
))
1436 || !bfd_set_section_alignment (abfd
, s
, 3))
1438 elf64_hppa_hash_table (info
)->opd_rel_sec
= s
;
1443 /* Allocate dynamic relocations for those symbols that turned out
1447 allocate_dynrel_entries (dyn_h
, data
)
1448 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1451 struct elf64_hppa_allocate_data
*x
= (struct elf64_hppa_allocate_data
*)data
;
1452 struct elf64_hppa_link_hash_table
*hppa_info
;
1453 struct elf64_hppa_dyn_reloc_entry
*rent
;
1454 boolean dynamic_symbol
, shared
;
1456 hppa_info
= elf64_hppa_hash_table (x
->info
);
1457 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, x
->info
);
1458 shared
= x
->info
->shared
;
1460 /* We may need to allocate relocations for a non-dynamic symbol
1461 when creating a shared library. */
1462 if (!dynamic_symbol
&& !shared
)
1465 /* Take care of the normal data relocations. */
1467 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
1471 case R_PARISC_FPTR64
:
1472 /* Allocate one iff we are not building a shared library and
1473 !want_opd, which by this point will be true only if we're
1474 actually allocating one statically in the main executable. */
1475 if (!x
->info
->shared
&& dyn_h
->want_opd
)
1479 hppa_info
->other_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1481 /* Make sure this symbol gets into the dynamic symbol table if it is
1482 not already recorded. ?!? This should not be in the loop since
1483 the symbol need only be added once. */
1484 if (dyn_h
->h
== 0 || dyn_h
->h
->dynindx
== -1)
1485 if (!_bfd_elf64_link_record_local_dynamic_symbol
1486 (x
->info
, rent
->sec
->owner
, dyn_h
->sym_indx
))
1490 /* Take care of the GOT and PLT relocations. */
1492 if ((dynamic_symbol
|| shared
) && dyn_h
->want_dlt
)
1493 hppa_info
->dlt_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1495 /* If we are building a shared library, then every symbol that has an
1496 opd entry will need an EPLT relocation to relocate the symbol's address
1497 and __gp value based on the runtime load address. */
1498 if (shared
&& dyn_h
->want_opd
)
1499 hppa_info
->opd_rel_sec
->_raw_size
+= sizeof (Elf64_External_Rela
);
1501 if (dyn_h
->want_plt
&& dynamic_symbol
)
1503 bfd_size_type t
= 0;
1505 /* Dynamic symbols get one IPLT relocation. Local symbols in
1506 shared libraries get two REL relocations. Local symbols in
1507 main applications get nothing. */
1509 t
= sizeof (Elf64_External_Rela
);
1511 t
= 2 * sizeof (Elf64_External_Rela
);
1513 hppa_info
->plt_rel_sec
->_raw_size
+= t
;
1519 /* Adjust a symbol defined by a dynamic object and referenced by a
1523 elf64_hppa_adjust_dynamic_symbol (info
, h
)
1524 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1525 struct elf_link_hash_entry
*h
;
1527 /* ??? Undefined symbols with PLT entries should be re-defined
1528 to be the PLT entry. */
1530 /* If this is a weak symbol, and there is a real definition, the
1531 processor independent code will have arranged for us to see the
1532 real definition first, and we can just use the same value. */
1533 if (h
->weakdef
!= NULL
)
1535 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1536 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1537 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1538 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1542 /* If this is a reference to a symbol defined by a dynamic object which
1543 is not a function, we might allocate the symbol in our .dynbss section
1544 and allocate a COPY dynamic relocation.
1546 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1552 /* Set the final sizes of the dynamic sections and allocate memory for
1553 the contents of our special sections. */
1556 elf64_hppa_size_dynamic_sections (output_bfd
, info
)
1558 struct bfd_link_info
*info
;
1565 struct elf64_hppa_allocate_data data
;
1566 struct elf64_hppa_link_hash_table
*hppa_info
;
1568 hppa_info
= elf64_hppa_hash_table (info
);
1570 dynobj
= elf_hash_table (info
)->dynobj
;
1571 BFD_ASSERT (dynobj
!= NULL
);
1573 if (elf_hash_table (info
)->dynamic_sections_created
)
1575 /* Set the contents of the .interp section to the interpreter. */
1578 s
= bfd_get_section_by_name (dynobj
, ".interp");
1579 BFD_ASSERT (s
!= NULL
);
1580 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1581 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1586 /* We may have created entries in the .rela.got section.
1587 However, if we are not creating the dynamic sections, we will
1588 not actually use these entries. Reset the size of .rela.dlt,
1589 which will cause it to get stripped from the output file
1591 s
= bfd_get_section_by_name (dynobj
, ".rela.dlt");
1596 /* Allocate the GOT entries. */
1599 if (elf64_hppa_hash_table (info
)->dlt_sec
)
1602 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1603 allocate_global_data_dlt
, &data
);
1604 hppa_info
->dlt_sec
->_raw_size
= data
.ofs
;
1607 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1608 allocate_global_data_plt
, &data
);
1609 hppa_info
->plt_sec
->_raw_size
= data
.ofs
;
1612 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1613 allocate_global_data_stub
, &data
);
1614 hppa_info
->stub_sec
->_raw_size
= data
.ofs
;
1617 /* Mark each function this program exports so that we will allocate
1618 space in the .opd section for each function's FPTR.
1620 We have to traverse the main linker hash table since we have to
1621 find functions which may not have been mentioned in any relocs. */
1622 elf_link_hash_traverse (elf_hash_table (info
),
1623 elf64_hppa_mark_exported_functions
,
1626 /* Allocate space for entries in the .opd section. */
1627 if (elf64_hppa_hash_table (info
)->opd_sec
)
1630 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1631 allocate_global_data_opd
, &data
);
1632 hppa_info
->opd_sec
->_raw_size
= data
.ofs
;
1635 /* Now allocate space for dynamic relocations, if necessary. */
1636 if (hppa_info
->root
.dynamic_sections_created
)
1637 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
1638 allocate_dynrel_entries
, &data
);
1640 /* The sizes of all the sections are set. Allocate memory for them. */
1644 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1649 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1652 /* It's OK to base decisions on the section name, because none
1653 of the dynobj section names depend upon the input files. */
1654 name
= bfd_get_section_name (dynobj
, s
);
1658 if (strcmp (name
, ".plt") == 0)
1660 if (s
->_raw_size
== 0)
1662 /* Strip this section if we don't need it; see the
1668 /* Remember whether there is a PLT. */
1672 else if (strcmp (name
, ".dlt") == 0)
1674 if (s
->_raw_size
== 0)
1676 /* Strip this section if we don't need it; see the
1681 else if (strcmp (name
, ".opd") == 0)
1683 if (s
->_raw_size
== 0)
1685 /* Strip this section if we don't need it; see the
1690 else if (strncmp (name
, ".rela", 4) == 0)
1692 if (s
->_raw_size
== 0)
1694 /* If we don't need this section, strip it from the
1695 output file. This is mostly to handle .rela.bss and
1696 .rela.plt. We must create both sections in
1697 create_dynamic_sections, because they must be created
1698 before the linker maps input sections to output
1699 sections. The linker does that before
1700 adjust_dynamic_symbol is called, and it is that
1701 function which decides whether anything needs to go
1702 into these sections. */
1709 /* Remember whether there are any reloc sections other
1711 if (strcmp (name
, ".rela.plt") != 0)
1713 const char *outname
;
1717 /* If this relocation section applies to a read only
1718 section, then we probably need a DT_TEXTREL
1719 entry. The entries in the .rela.plt section
1720 really apply to the .got section, which we
1721 created ourselves and so know is not readonly. */
1722 outname
= bfd_get_section_name (output_bfd
,
1724 target
= bfd_get_section_by_name (output_bfd
, outname
+ 4);
1726 && (target
->flags
& SEC_READONLY
) != 0
1727 && (target
->flags
& SEC_ALLOC
) != 0)
1731 /* We use the reloc_count field as a counter if we need
1732 to copy relocs into the output file. */
1736 else if (strncmp (name
, ".dlt", 4) != 0
1737 && strcmp (name
, ".stub") != 0
1738 && strcmp (name
, ".got") != 0)
1740 /* It's not one of our sections, so don't allocate space. */
1746 _bfd_strip_section_from_output (info
, s
);
1750 /* Allocate memory for the section contents if it has not
1751 been allocated already. We use bfd_zalloc here in case
1752 unused entries are not reclaimed before the section's
1753 contents are written out. This should not happen, but this
1754 way if it does, we get a R_PARISC_NONE reloc instead of
1756 if (s
->contents
== NULL
)
1758 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1759 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1764 if (elf_hash_table (info
)->dynamic_sections_created
)
1766 /* Always create a DT_PLTGOT. It actually has nothing to do with
1767 the PLT, it is how we communicate the __gp value of a load
1768 module to the dynamic linker. */
1769 if (! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_FLAGS
, 0)
1770 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTGOT
, 0))
1773 /* Add some entries to the .dynamic section. We fill in the
1774 values later, in elf64_hppa_finish_dynamic_sections, but we
1775 must add the entries now so that we get the correct size for
1776 the .dynamic section. The DT_DEBUG entry is filled in by the
1777 dynamic linker and used by the debugger. */
1780 if (! bfd_elf64_add_dynamic_entry (info
, DT_DEBUG
, 0)
1781 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_DLD_HOOK
, 0)
1782 || ! bfd_elf64_add_dynamic_entry (info
, DT_HP_LOAD_MAP
, 0))
1788 if (! bfd_elf64_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
1789 || ! bfd_elf64_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
1790 || ! bfd_elf64_add_dynamic_entry (info
, DT_JMPREL
, 0))
1796 if (! bfd_elf64_add_dynamic_entry (info
, DT_RELA
, 0)
1797 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELASZ
, 0)
1798 || ! bfd_elf64_add_dynamic_entry (info
, DT_RELAENT
,
1799 sizeof (Elf64_External_Rela
)))
1805 if (! bfd_elf64_add_dynamic_entry (info
, DT_TEXTREL
, 0))
1807 info
->flags
|= DF_TEXTREL
;
1814 /* Called after we have output the symbol into the dynamic symbol
1815 table, but before we output the symbol into the normal symbol
1818 For some symbols we had to change their address when outputting
1819 the dynamic symbol table. We undo that change here so that
1820 the symbols have their expected value in the normal symbol
1824 elf64_hppa_link_output_symbol_hook (abfd
, info
, name
, sym
, input_sec
)
1825 bfd
*abfd ATTRIBUTE_UNUSED
;
1826 struct bfd_link_info
*info
;
1828 Elf_Internal_Sym
*sym
;
1829 asection
*input_sec ATTRIBUTE_UNUSED
;
1831 struct elf64_hppa_link_hash_table
*hppa_info
;
1832 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1834 /* We may be called with the file symbol or section symbols.
1835 They never need munging, so it is safe to ignore them. */
1839 /* Get the PA dyn_symbol (if any) associated with NAME. */
1840 hppa_info
= elf64_hppa_hash_table (info
);
1841 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1842 name
, false, false);
1844 /* Function symbols for which we created .opd entries *may* have been
1845 munged by finish_dynamic_symbol and have to be un-munged here.
1847 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1848 into non-dynamic ones, so we initialize st_shndx to -1 in
1849 mark_exported_functions and check to see if it was overwritten
1850 here instead of just checking dyn_h->h->dynindx. */
1851 if (dyn_h
&& dyn_h
->want_opd
&& dyn_h
->st_shndx
!= -1)
1853 /* Restore the saved value and section index. */
1854 sym
->st_value
= dyn_h
->st_value
;
1855 sym
->st_shndx
= dyn_h
->st_shndx
;
1861 /* Finish up dynamic symbol handling. We set the contents of various
1862 dynamic sections here. */
1865 elf64_hppa_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1867 struct bfd_link_info
*info
;
1868 struct elf_link_hash_entry
*h
;
1869 Elf_Internal_Sym
*sym
;
1871 asection
*stub
, *splt
, *sdlt
, *sopd
, *spltrel
, *sdltrel
;
1872 struct elf64_hppa_link_hash_table
*hppa_info
;
1873 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
1875 hppa_info
= elf64_hppa_hash_table (info
);
1876 dyn_h
= elf64_hppa_dyn_hash_lookup (&hppa_info
->dyn_hash_table
,
1877 h
->root
.root
.string
, false, false);
1879 stub
= hppa_info
->stub_sec
;
1880 splt
= hppa_info
->plt_sec
;
1881 sdlt
= hppa_info
->dlt_sec
;
1882 sopd
= hppa_info
->opd_sec
;
1883 spltrel
= hppa_info
->plt_rel_sec
;
1884 sdltrel
= hppa_info
->dlt_rel_sec
;
1886 BFD_ASSERT (stub
!= NULL
&& splt
!= NULL
1887 && sopd
!= NULL
&& sdlt
!= NULL
)
1889 /* Incredible. It is actually necessary to NOT use the symbol's real
1890 value when building the dynamic symbol table for a shared library.
1891 At least for symbols that refer to functions.
1893 We will store a new value and section index into the symbol long
1894 enough to output it into the dynamic symbol table, then we restore
1895 the original values (in elf64_hppa_link_output_symbol_hook). */
1896 if (dyn_h
&& dyn_h
->want_opd
)
1898 /* Save away the original value and section index so that we
1899 can restore them later. */
1900 dyn_h
->st_value
= sym
->st_value
;
1901 dyn_h
->st_shndx
= sym
->st_shndx
;
1903 /* For the dynamic symbol table entry, we want the value to be
1904 address of this symbol's entry within the .opd section. */
1905 sym
->st_value
= (dyn_h
->opd_offset
1906 + sopd
->output_offset
1907 + sopd
->output_section
->vma
);
1908 sym
->st_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
1909 sopd
->output_section
);
1912 /* Initialize a .plt entry if requested. */
1913 if (dyn_h
&& dyn_h
->want_plt
1914 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1917 Elf_Internal_Rela rel
;
1919 /* We do not actually care about the value in the PLT entry
1920 if we are creating a shared library and the symbol is
1921 still undefined, we create a dynamic relocation to fill
1922 in the correct value. */
1923 if (info
->shared
&& h
->root
.type
== bfd_link_hash_undefined
)
1926 value
= (h
->root
.u
.def
.value
+ h
->root
.u
.def
.section
->vma
);
1928 /* Fill in the entry in the procedure linkage table.
1930 The format of a plt entry is
1933 plt_offset is the offset within the PLT section at which to
1934 install the PLT entry.
1936 We are modifying the in-memory PLT contents here, so we do not add
1937 in the output_offset of the PLT section. */
1939 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
);
1940 value
= _bfd_get_gp_value (splt
->output_section
->owner
);
1941 bfd_put_64 (splt
->owner
, value
, splt
->contents
+ dyn_h
->plt_offset
+ 0x8);
1943 /* Create a dynamic IPLT relocation for this entry.
1945 We are creating a relocation in the output file's PLT section,
1946 which is included within the DLT secton. So we do need to include
1947 the PLT's output_offset in the computation of the relocation's
1949 rel
.r_offset
= (dyn_h
->plt_offset
+ splt
->output_offset
1950 + splt
->output_section
->vma
);
1951 rel
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
1954 bfd_elf64_swap_reloca_out (splt
->output_section
->owner
, &rel
,
1955 (((Elf64_External_Rela
*)
1957 + spltrel
->reloc_count
));
1958 spltrel
->reloc_count
++;
1961 /* Initialize an external call stub entry if requested. */
1962 if (dyn_h
&& dyn_h
->want_stub
1963 && elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
))
1967 unsigned int max_offset
;
1969 /* Install the generic stub template.
1971 We are modifying the contents of the stub section, so we do not
1972 need to include the stub section's output_offset here. */
1973 memcpy (stub
->contents
+ dyn_h
->stub_offset
, plt_stub
, sizeof (plt_stub
));
1975 /* Fix up the first ldd instruction.
1977 We are modifying the contents of the STUB section in memory,
1978 so we do not need to include its output offset in this computation.
1980 Note the plt_offset value is the value of the PLT entry relative to
1981 the start of the PLT section. These instructions will reference
1982 data relative to the value of __gp, which may not necessarily have
1983 the same address as the start of the PLT section.
1985 gp_offset contains the offset of __gp within the PLT section. */
1986 value
= dyn_h
->plt_offset
- hppa_info
->gp_offset
;
1988 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
);
1989 if (output_bfd
->arch_info
->mach
>= 25)
1991 /* Wide mode allows 16 bit offsets. */
1994 insn
|= re_assemble_16 (value
);
2000 insn
|= re_assemble_14 (value
);
2003 if ((value
& 7) || value
+ max_offset
>= 2*max_offset
- 8)
2005 (*_bfd_error_handler
) (_("stub entry for %s cannot load .plt, dp offset = %ld"),
2011 bfd_put_32 (stub
->owner
, insn
,
2012 stub
->contents
+ dyn_h
->stub_offset
);
2014 /* Fix up the second ldd instruction. */
2016 insn
= bfd_get_32 (stub
->owner
, stub
->contents
+ dyn_h
->stub_offset
+ 8);
2017 if (output_bfd
->arch_info
->mach
>= 25)
2020 insn
|= re_assemble_16 (value
);
2025 insn
|= re_assemble_14 (value
);
2027 bfd_put_32 (stub
->owner
, insn
,
2028 stub
->contents
+ dyn_h
->stub_offset
+ 8);
2031 /* Millicode symbols should not be put in the dynamic
2032 symbol table under any circumstances. */
2033 if (ELF_ST_TYPE (sym
->st_info
) == STT_PARISC_MILLI
)
2039 /* The .opd section contains FPTRs for each function this file
2040 exports. Initialize the FPTR entries. */
2043 elf64_hppa_finalize_opd (dyn_h
, data
)
2044 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2047 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2048 struct elf64_hppa_link_hash_table
*hppa_info
;
2049 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2053 hppa_info
= elf64_hppa_hash_table (info
);
2054 sopd
= hppa_info
->opd_sec
;
2055 sopdrel
= hppa_info
->opd_rel_sec
;
2057 if (h
&& dyn_h
&& dyn_h
->want_opd
)
2061 /* The first two words of an .opd entry are zero.
2063 We are modifying the contents of the OPD section in memory, so we
2064 do not need to include its output offset in this computation. */
2065 memset (sopd
->contents
+ dyn_h
->opd_offset
, 0, 16);
2067 value
= (h
->root
.u
.def
.value
2068 + h
->root
.u
.def
.section
->output_section
->vma
2069 + h
->root
.u
.def
.section
->output_offset
);
2071 /* The next word is the address of the function. */
2072 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 16);
2074 /* The last word is our local __gp value. */
2075 value
= _bfd_get_gp_value (sopd
->output_section
->owner
);
2076 bfd_put_64 (sopd
->owner
, value
, sopd
->contents
+ dyn_h
->opd_offset
+ 24);
2079 /* If we are generating a shared library, we must generate EPLT relocations
2080 for each entry in the .opd, even for static functions (they may have
2081 had their address taken). */
2082 if (info
->shared
&& dyn_h
&& dyn_h
->want_opd
)
2084 Elf64_Internal_Rela rel
;
2087 /* We may need to do a relocation against a local symbol, in
2088 which case we have to look up it's dynamic symbol index off
2089 the local symbol hash table. */
2090 if (h
&& h
->dynindx
!= -1)
2091 dynindx
= h
->dynindx
;
2094 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2097 /* The offset of this relocation is the absolute address of the
2098 .opd entry for this symbol. */
2099 rel
.r_offset
= (dyn_h
->opd_offset
+ sopd
->output_offset
2100 + sopd
->output_section
->vma
);
2102 /* If H is non-null, then we have an external symbol.
2104 It is imperative that we use a different dynamic symbol for the
2105 EPLT relocation if the symbol has global scope.
2107 In the dynamic symbol table, the function symbol will have a value
2108 which is address of the function's .opd entry.
2110 Thus, we can not use that dynamic symbol for the EPLT relocation
2111 (if we did, the data in the .opd would reference itself rather
2112 than the actual address of the function). Instead we have to use
2113 a new dynamic symbol which has the same value as the original global
2116 We prefix the original symbol with a "." and use the new symbol in
2117 the EPLT relocation. This new symbol has already been recorded in
2118 the symbol table, we just have to look it up and use it.
2120 We do not have such problems with static functions because we do
2121 not make their addresses in the dynamic symbol table point to
2122 the .opd entry. Ultimately this should be safe since a static
2123 function can not be directly referenced outside of its shared
2126 We do have to play similar games for FPTR relocations in shared
2127 libraries, including those for static symbols. See the FPTR
2128 handling in elf64_hppa_finalize_dynreloc. */
2132 struct elf_link_hash_entry
*nh
;
2134 new_name
= alloca (strlen (h
->root
.root
.string
) + 2);
2136 strcpy (new_name
+ 1, h
->root
.root
.string
);
2138 nh
= elf_link_hash_lookup (elf_hash_table (info
),
2139 new_name
, false, false, false);
2141 /* All we really want from the new symbol is its dynamic
2143 dynindx
= nh
->dynindx
;
2147 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_EPLT
);
2149 bfd_elf64_swap_reloca_out (sopd
->output_section
->owner
, &rel
,
2150 (((Elf64_External_Rela
*)
2152 + sopdrel
->reloc_count
));
2153 sopdrel
->reloc_count
++;
2158 /* The .dlt section contains addresses for items referenced through the
2159 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2160 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2163 elf64_hppa_finalize_dlt (dyn_h
, data
)
2164 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2167 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2168 struct elf64_hppa_link_hash_table
*hppa_info
;
2169 asection
*sdlt
, *sdltrel
;
2170 struct elf_link_hash_entry
*h
= dyn_h
->h
;
2172 hppa_info
= elf64_hppa_hash_table (info
);
2174 sdlt
= hppa_info
->dlt_sec
;
2175 sdltrel
= hppa_info
->dlt_rel_sec
;
2177 /* H/DYN_H may refer to a local variable and we know it's
2178 address, so there is no need to create a relocation. Just install
2179 the proper value into the DLT, note this shortcut can not be
2180 skipped when building a shared library. */
2181 if (! info
->shared
&& h
&& dyn_h
&& dyn_h
->want_dlt
)
2185 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2186 to point to the FPTR entry in the .opd section.
2188 We include the OPD's output offset in this computation as
2189 we are referring to an absolute address in the resulting
2191 if (dyn_h
->want_opd
)
2193 value
= (dyn_h
->opd_offset
2194 + hppa_info
->opd_sec
->output_offset
2195 + hppa_info
->opd_sec
->output_section
->vma
);
2199 value
= (h
->root
.u
.def
.value
2200 + h
->root
.u
.def
.section
->output_offset
);
2202 if (h
->root
.u
.def
.section
->output_section
)
2203 value
+= h
->root
.u
.def
.section
->output_section
->vma
;
2205 value
+= h
->root
.u
.def
.section
->vma
;
2208 /* We do not need to include the output offset of the DLT section
2209 here because we are modifying the in-memory contents. */
2210 bfd_put_64 (sdlt
->owner
, value
, sdlt
->contents
+ dyn_h
->dlt_offset
);
2213 /* Create a relocation for the DLT entry assocated with this symbol.
2214 When building a shared library the symbol does not have to be dynamic. */
2216 && (elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
) || info
->shared
))
2218 Elf64_Internal_Rela rel
;
2221 /* We may need to do a relocation against a local symbol, in
2222 which case we have to look up it's dynamic symbol index off
2223 the local symbol hash table. */
2224 if (h
&& h
->dynindx
!= -1)
2225 dynindx
= h
->dynindx
;
2228 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2231 /* Create a dynamic relocation for this entry. Do include the output
2232 offset of the DLT entry since we need an absolute address in the
2233 resulting object file. */
2234 rel
.r_offset
= (dyn_h
->dlt_offset
+ sdlt
->output_offset
2235 + sdlt
->output_section
->vma
);
2236 if (h
&& h
->type
== STT_FUNC
)
2237 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_FPTR64
);
2239 rel
.r_info
= ELF64_R_INFO (dynindx
, R_PARISC_DIR64
);
2242 bfd_elf64_swap_reloca_out (sdlt
->output_section
->owner
, &rel
,
2243 (((Elf64_External_Rela
*)
2245 + sdltrel
->reloc_count
));
2246 sdltrel
->reloc_count
++;
2251 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2252 for dynamic functions used to initialize static data. */
2255 elf64_hppa_finalize_dynreloc (dyn_h
, data
)
2256 struct elf64_hppa_dyn_hash_entry
*dyn_h
;
2259 struct bfd_link_info
*info
= (struct bfd_link_info
*)data
;
2260 struct elf64_hppa_link_hash_table
*hppa_info
;
2261 struct elf_link_hash_entry
*h
;
2264 dynamic_symbol
= elf64_hppa_dynamic_symbol_p (dyn_h
->h
, info
);
2266 if (!dynamic_symbol
&& !info
->shared
)
2269 if (dyn_h
->reloc_entries
)
2271 struct elf64_hppa_dyn_reloc_entry
*rent
;
2274 hppa_info
= elf64_hppa_hash_table (info
);
2277 /* We may need to do a relocation against a local symbol, in
2278 which case we have to look up it's dynamic symbol index off
2279 the local symbol hash table. */
2280 if (h
&& h
->dynindx
!= -1)
2281 dynindx
= h
->dynindx
;
2284 = _bfd_elf_link_lookup_local_dynindx (info
, dyn_h
->owner
,
2287 for (rent
= dyn_h
->reloc_entries
; rent
; rent
= rent
->next
)
2289 Elf64_Internal_Rela rel
;
2293 case R_PARISC_FPTR64
:
2294 /* Allocate one iff we are not building a shared library and
2295 !want_opd, which by this point will be true only if we're
2296 actually allocating one statically in the main executable. */
2297 if (!info
->shared
&& dyn_h
->want_opd
)
2302 /* Create a dynamic relocation for this entry.
2304 We need the output offset for the reloc's section because
2305 we are creating an absolute address in the resulting object
2307 rel
.r_offset
= (rent
->offset
+ rent
->sec
->output_offset
2308 + rent
->sec
->output_section
->vma
);
2310 /* An FPTR64 relocation implies that we took the address of
2311 a function and that the function has an entry in the .opd
2312 section. We want the FPTR64 relocation to reference the
2315 We could munge the symbol value in the dynamic symbol table
2316 (in fact we already do for functions with global scope) to point
2317 to the .opd entry. Then we could use that dynamic symbol in
2320 Or we could do something sensible, not munge the symbol's
2321 address and instead just use a different symbol to reference
2322 the .opd entry. At least that seems sensible until you
2323 realize there's no local dynamic symbols we can use for that
2324 purpose. Thus the hair in the check_relocs routine.
2326 We use a section symbol recorded by check_relocs as the
2327 base symbol for the relocation. The addend is the difference
2328 between the section symbol and the address of the .opd entry. */
2329 if (info
->shared
&& rent
->type
== R_PARISC_FPTR64
)
2331 bfd_vma value
, value2
;
2333 /* First compute the address of the opd entry for this symbol. */
2334 value
= (dyn_h
->opd_offset
2335 + hppa_info
->opd_sec
->output_section
->vma
2336 + hppa_info
->opd_sec
->output_offset
);
2338 /* Compute the value of the start of the section with
2340 value2
= (rent
->sec
->output_section
->vma
2341 + rent
->sec
->output_offset
);
2343 /* Compute the difference between the start of the section
2344 with the relocation and the opd entry. */
2347 /* The result becomes the addend of the relocation. */
2348 rel
.r_addend
= value
;
2350 /* The section symbol becomes the symbol for the dynamic
2353 = _bfd_elf_link_lookup_local_dynindx (info
,
2358 rel
.r_addend
= rent
->addend
;
2360 rel
.r_info
= ELF64_R_INFO (dynindx
, rent
->type
);
2362 bfd_elf64_swap_reloca_out (hppa_info
->other_rel_sec
->output_section
->owner
,
2364 (((Elf64_External_Rela
*)
2365 hppa_info
->other_rel_sec
->contents
)
2366 + hppa_info
->other_rel_sec
->reloc_count
));
2367 hppa_info
->other_rel_sec
->reloc_count
++;
2374 /* Finish up the dynamic sections. */
2377 elf64_hppa_finish_dynamic_sections (output_bfd
, info
)
2379 struct bfd_link_info
*info
;
2383 struct elf64_hppa_link_hash_table
*hppa_info
;
2385 hppa_info
= elf64_hppa_hash_table (info
);
2387 /* Finalize the contents of the .opd section. */
2388 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2389 elf64_hppa_finalize_opd
,
2392 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2393 elf64_hppa_finalize_dynreloc
,
2396 /* Finalize the contents of the .dlt section. */
2397 dynobj
= elf_hash_table (info
)->dynobj
;
2398 /* Finalize the contents of the .dlt section. */
2399 elf64_hppa_dyn_hash_traverse (&hppa_info
->dyn_hash_table
,
2400 elf64_hppa_finalize_dlt
,
2403 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2405 if (elf_hash_table (info
)->dynamic_sections_created
)
2407 Elf64_External_Dyn
*dyncon
, *dynconend
;
2409 BFD_ASSERT (sdyn
!= NULL
);
2411 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
2412 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2413 for (; dyncon
< dynconend
; dyncon
++)
2415 Elf_Internal_Dyn dyn
;
2418 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2425 case DT_HP_LOAD_MAP
:
2426 /* Compute the absolute address of 16byte scratchpad area
2427 for the dynamic linker.
2429 By convention the linker script will allocate the scratchpad
2430 area at the start of the .data section. So all we have to
2431 to is find the start of the .data section. */
2432 s
= bfd_get_section_by_name (output_bfd
, ".data");
2433 dyn
.d_un
.d_ptr
= s
->vma
;
2434 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2438 /* HP's use PLTGOT to set the GOT register. */
2439 dyn
.d_un
.d_ptr
= _bfd_get_gp_value (output_bfd
);
2440 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2444 s
= hppa_info
->plt_rel_sec
;
2445 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2446 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2450 s
= hppa_info
->plt_rel_sec
;
2451 dyn
.d_un
.d_val
= s
->_raw_size
;
2452 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2456 s
= hppa_info
->other_rel_sec
;
2458 s
= hppa_info
->dlt_rel_sec
;
2459 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
2460 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2464 s
= hppa_info
->other_rel_sec
;
2465 dyn
.d_un
.d_val
= s
->_raw_size
;
2466 s
= hppa_info
->dlt_rel_sec
;
2467 dyn
.d_un
.d_val
+= s
->_raw_size
;
2468 s
= hppa_info
->opd_rel_sec
;
2469 dyn
.d_un
.d_val
+= s
->_raw_size
;
2470 /* There is some question about whether or not the size of
2471 the PLT relocs should be included here. HP's tools do
2472 it, so we'll emulate them. */
2473 s
= hppa_info
->plt_rel_sec
;
2474 dyn
.d_un
.d_val
+= s
->_raw_size
;
2475 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2485 /* Return the number of additional phdrs we will need.
2487 The generic ELF code only creates PT_PHDRs for executables. The HP
2488 dynamic linker requires PT_PHDRs for dynamic libraries too.
2490 This routine indicates that the backend needs one additional program
2491 header for that case.
2493 Note we do not have access to the link info structure here, so we have
2494 to guess whether or not we are building a shared library based on the
2495 existence of a .interp section. */
2498 elf64_hppa_additional_program_headers (abfd
)
2503 /* If we are creating a shared library, then we have to create a
2504 PT_PHDR segment. HP's dynamic linker chokes without it. */
2505 s
= bfd_get_section_by_name (abfd
, ".interp");
2511 /* Allocate and initialize any program headers required by this
2514 The generic ELF code only creates PT_PHDRs for executables. The HP
2515 dynamic linker requires PT_PHDRs for dynamic libraries too.
2517 This allocates the PT_PHDR and initializes it in a manner suitable
2520 Note we do not have access to the link info structure here, so we have
2521 to guess whether or not we are building a shared library based on the
2522 existence of a .interp section. */
2525 elf64_hppa_modify_segment_map (abfd
)
2528 struct elf_segment_map
*m
;
2531 s
= bfd_get_section_by_name (abfd
, ".interp");
2534 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2535 if (m
->p_type
== PT_PHDR
)
2539 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, sizeof *m
);
2543 m
->p_type
= PT_PHDR
;
2544 m
->p_flags
= PF_R
| PF_X
;
2545 m
->p_flags_valid
= 1;
2546 m
->p_paddr_valid
= 1;
2547 m
->includes_phdrs
= 1;
2549 m
->next
= elf_tdata (abfd
)->segment_map
;
2550 elf_tdata (abfd
)->segment_map
= m
;
2554 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2555 if (m
->p_type
== PT_LOAD
)
2559 for (i
= 0; i
< m
->count
; i
++)
2561 /* The code "hint" is not really a hint. It is a requirement
2562 for certain versions of the HP dynamic linker. Worse yet,
2563 it must be set even if the shared library does not have
2564 any code in its "text" segment (thus the check for .hash
2565 to catch this situation). */
2566 if (m
->sections
[i
]->flags
& SEC_CODE
2567 || (strcmp (m
->sections
[i
]->name
, ".hash") == 0))
2568 m
->p_flags
|= (PF_X
| PF_HP_CODE
);
2575 /* Called when writing out an object file to decide the type of a
2578 elf64_hppa_elf_get_symbol_type (elf_sym
, type
)
2579 Elf_Internal_Sym
*elf_sym
;
2582 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_PARISC_MILLI
)
2583 return STT_PARISC_MILLI
;
2588 /* The hash bucket size is the standard one, namely 4. */
2590 const struct elf_size_info hppa64_elf_size_info
=
2592 sizeof (Elf64_External_Ehdr
),
2593 sizeof (Elf64_External_Phdr
),
2594 sizeof (Elf64_External_Shdr
),
2595 sizeof (Elf64_External_Rel
),
2596 sizeof (Elf64_External_Rela
),
2597 sizeof (Elf64_External_Sym
),
2598 sizeof (Elf64_External_Dyn
),
2599 sizeof (Elf_External_Note
),
2603 ELFCLASS64
, EV_CURRENT
,
2604 bfd_elf64_write_out_phdrs
,
2605 bfd_elf64_write_shdrs_and_ehdr
,
2606 bfd_elf64_write_relocs
,
2607 bfd_elf64_swap_symbol_out
,
2608 bfd_elf64_slurp_reloc_table
,
2609 bfd_elf64_slurp_symbol_table
,
2610 bfd_elf64_swap_dyn_in
,
2611 bfd_elf64_swap_dyn_out
,
2618 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2619 #define TARGET_BIG_NAME "elf64-hppa"
2620 #define ELF_ARCH bfd_arch_hppa
2621 #define ELF_MACHINE_CODE EM_PARISC
2622 /* This is not strictly correct. The maximum page size for PA2.0 is
2623 64M. But everything still uses 4k. */
2624 #define ELF_MAXPAGESIZE 0x1000
2625 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2626 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2627 #define elf_info_to_howto elf_hppa_info_to_howto
2628 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2630 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2631 #define elf_backend_object_p elf64_hppa_object_p
2632 #define elf_backend_final_write_processing \
2633 elf_hppa_final_write_processing
2634 #define elf_backend_fake_sections elf_hppa_fake_sections
2635 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2637 #define elf_backend_relocate_section elf_hppa_relocate_section
2639 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2641 #define elf_backend_create_dynamic_sections \
2642 elf64_hppa_create_dynamic_sections
2643 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2645 #define elf_backend_adjust_dynamic_symbol \
2646 elf64_hppa_adjust_dynamic_symbol
2648 #define elf_backend_size_dynamic_sections \
2649 elf64_hppa_size_dynamic_sections
2651 #define elf_backend_finish_dynamic_symbol \
2652 elf64_hppa_finish_dynamic_symbol
2653 #define elf_backend_finish_dynamic_sections \
2654 elf64_hppa_finish_dynamic_sections
2656 /* Stuff for the BFD linker: */
2657 #define bfd_elf64_bfd_link_hash_table_create \
2658 elf64_hppa_hash_table_create
2660 #define elf_backend_check_relocs \
2661 elf64_hppa_check_relocs
2663 #define elf_backend_size_info \
2664 hppa64_elf_size_info
2666 #define elf_backend_additional_program_headers \
2667 elf64_hppa_additional_program_headers
2669 #define elf_backend_modify_segment_map \
2670 elf64_hppa_modify_segment_map
2672 #define elf_backend_link_output_symbol_hook \
2673 elf64_hppa_link_output_symbol_hook
2675 #define elf_backend_want_got_plt 0
2676 #define elf_backend_plt_readonly 0
2677 #define elf_backend_want_plt_sym 0
2678 #define elf_backend_got_header_size 0
2679 #define elf_backend_plt_header_size 0
2680 #define elf_backend_type_change_ok true
2681 #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type
2683 #include "elf64-target.h"
2685 #undef TARGET_BIG_SYM
2686 #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec
2687 #undef TARGET_BIG_NAME
2688 #define TARGET_BIG_NAME "elf64-hppa-linux"
2690 #define INCLUDED_TARGET_FILE 1
2691 #include "elf64-target.h"