1 /* Support for HPPA 64-bit ELF
2 Copyright 1999, 2000, 2001, 2002, 2003 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 bfd_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 bfd_boolean create, bfd_boolean copy));
170 static void elf64_hppa_dyn_hash_traverse
171 PARAMS ((struct elf64_hppa_dyn_hash_table *table,
172 bfd_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 bfd_boolean elf64_hppa_object_p
186 static bfd_boolean elf64_hppa_section_from_shdr
187 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
189 static void elf64_hppa_post_process_headers
190 PARAMS ((bfd *, struct bfd_link_info *));
192 static bfd_boolean elf64_hppa_create_dynamic_sections
193 PARAMS ((bfd *, struct bfd_link_info *));
195 static bfd_boolean elf64_hppa_adjust_dynamic_symbol
196 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
198 static bfd_boolean elf64_hppa_mark_milli_and_exported_functions
199 PARAMS ((struct elf_link_hash_entry *, PTR));
201 static bfd_boolean elf64_hppa_size_dynamic_sections
202 PARAMS ((bfd *, struct bfd_link_info *));
204 static bfd_boolean elf64_hppa_link_output_symbol_hook
205 PARAMS ((bfd *abfd, struct bfd_link_info *, const char *,
206 Elf_Internal_Sym *, asection *input_sec));
208 static bfd_boolean elf64_hppa_finish_dynamic_symbol
209 PARAMS ((bfd *, struct bfd_link_info *,
210 struct elf_link_hash_entry *, Elf_Internal_Sym *));
212 static int elf64_hppa_additional_program_headers
215 static bfd_boolean elf64_hppa_modify_segment_map
218 static enum elf_reloc_type_class elf64_hppa_reloc_type_class
219 PARAMS ((const Elf_Internal_Rela *));
221 static bfd_boolean elf64_hppa_finish_dynamic_sections
222 PARAMS ((bfd *, struct bfd_link_info *));
224 static bfd_boolean elf64_hppa_check_relocs
225 PARAMS ((bfd *, struct bfd_link_info *,
226 asection *, const Elf_Internal_Rela *));
228 static bfd_boolean elf64_hppa_dynamic_symbol_p
229 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
231 static bfd_boolean elf64_hppa_mark_exported_functions
232 PARAMS ((struct elf_link_hash_entry *, PTR));
234 static bfd_boolean elf64_hppa_finalize_opd
235 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
237 static bfd_boolean elf64_hppa_finalize_dlt
238 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
240 static bfd_boolean allocate_global_data_dlt
241 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
243 static bfd_boolean allocate_global_data_plt
244 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
246 static bfd_boolean allocate_global_data_stub
247 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
249 static bfd_boolean allocate_global_data_opd
250 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
252 static bfd_boolean get_reloc_section
253 PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *));
255 static bfd_boolean count_dyn_reloc
256 PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *,
257 int, asection *, int, bfd_vma, bfd_vma));
259 static bfd_boolean allocate_dynrel_entries
260 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
262 static bfd_boolean elf64_hppa_finalize_dynreloc
263 PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
265 static bfd_boolean get_opd
266 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
268 static bfd_boolean get_plt
269 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
271 static bfd_boolean get_dlt
272 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
274 static bfd_boolean get_stub
275 PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
277 static int elf64_hppa_elf_get_symbol_type
278 PARAMS ((Elf_Internal_Sym *, int));
281 elf64_hppa_dyn_hash_table_init (ht, abfd, new)
282 struct elf64_hppa_dyn_hash_table *ht;
283 bfd *abfd ATTRIBUTE_UNUSED;
284 new_hash_entry_func new;
286 memset (ht, 0, sizeof (*ht));
287 return bfd_hash_table_init (&ht->root, new);
290 static struct bfd_hash_entry*
291 elf64_hppa_new_dyn_hash_entry (entry, table, string)
292 struct bfd_hash_entry *entry;
293 struct bfd_hash_table *table;
296 struct elf64_hppa_dyn_hash_entry *ret;
297 ret = (struct elf64_hppa_dyn_hash_entry *) entry;
299 /* Allocate the structure if it has not already been allocated by a
302 ret = bfd_hash_allocate (table, sizeof (*ret));
307 /* Initialize our local data. All zeros, and definitely easier
308 than setting 8 bit fields. */
309 memset (ret, 0, sizeof (*ret));
311 /* Call the allocation method of the superclass. */
312 ret = ((struct elf64_hppa_dyn_hash_entry *)
313 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
318 /* Create the derived linker hash table. The PA64 ELF port uses this
319 derived hash table to keep information specific to the PA ElF
320 linker (without using static variables). */
322 static struct bfd_link_hash_table*
323 elf64_hppa_hash_table_create (abfd)
326 struct elf64_hppa_link_hash_table *ret;
328 ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret));
331 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
332 _bfd_elf_link_hash_newfunc))
334 bfd_release (abfd, ret);
338 if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd,
339 elf64_hppa_new_dyn_hash_entry))
341 return &ret->root.root;
344 /* Look up an entry in a PA64 ELF linker hash table. */
346 static struct elf64_hppa_dyn_hash_entry *
347 elf64_hppa_dyn_hash_lookup(table, string, create, copy)
348 struct elf64_hppa_dyn_hash_table *table;
350 bfd_boolean create, copy;
352 return ((struct elf64_hppa_dyn_hash_entry *)
353 bfd_hash_lookup (&table->root, string, create, copy));
356 /* Traverse a PA64 ELF linker hash table. */
359 elf64_hppa_dyn_hash_traverse (table, func, info)
360 struct elf64_hppa_dyn_hash_table *table;
361 bfd_boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
366 (bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func,
370 /* Return nonzero if ABFD represents a PA2.0 ELF64 file.
372 Additionally we set the default architecture and machine. */
374 elf64_hppa_object_p (abfd)
377 Elf_Internal_Ehdr * i_ehdrp;
380 i_ehdrp = elf_elfheader (abfd);
381 if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0)
383 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
388 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
392 flags = i_ehdrp->e_flags;
393 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
396 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
398 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
400 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
401 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
402 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
404 /* Don't be fussy. */
408 /* Given section type (hdr->sh_type), return a boolean indicating
409 whether or not the section is an elf64-hppa specific section. */
411 elf64_hppa_section_from_shdr (abfd, hdr, name)
413 Elf_Internal_Shdr *hdr;
418 switch (hdr->sh_type)
421 if (strcmp (name, ".PARISC.archext") != 0)
424 case SHT_PARISC_UNWIND:
425 if (strcmp (name, ".PARISC.unwind") != 0)
429 case SHT_PARISC_ANNOT:
434 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
436 newsect = hdr->bfd_section;
441 /* Construct a string for use in the elf64_hppa_dyn_hash_table. The
442 name describes what was once potentially anonymous memory. We
443 allocate memory as necessary, possibly reusing PBUF/PLEN. */
446 get_dyn_name (sec, h, rel, pbuf, plen)
448 struct elf_link_hash_entry *h;
449 const Elf_Internal_Rela *rel;
457 if (h && rel->r_addend == 0)
458 return h->root.root.string;
461 nlen = strlen (h->root.root.string);
463 nlen = 8 + 1 + sizeof (rel->r_info) * 2 - 8;
464 tlen = nlen + 1 + sizeof (rel->r_addend) * 2 + 1;
472 *pbuf = buf = malloc (tlen);
480 memcpy (buf, h->root.root.string, nlen);
482 sprintf_vma (buf + nlen, rel->r_addend);
486 nlen = sprintf (buf, "%x:%lx",
487 sec->id & 0xffffffff,
488 (long) ELF64_R_SYM (rel->r_info));
492 sprintf_vma (buf + nlen, rel->r_addend);
499 /* SEC is a section containing relocs for an input BFD when linking; return
500 a suitable section for holding relocs in the output BFD for a link. */
503 get_reloc_section (abfd, hppa_info, sec)
505 struct elf64_hppa_link_hash_table *hppa_info;
508 const char *srel_name;
512 srel_name = (bfd_elf_string_from_elf_section
513 (abfd, elf_elfheader(abfd)->e_shstrndx,
514 elf_section_data(sec)->rel_hdr.sh_name));
515 if (srel_name == NULL)
518 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
519 && strcmp (bfd_get_section_name (abfd, sec),
521 || (strncmp (srel_name, ".rel", 4) == 0
522 && strcmp (bfd_get_section_name (abfd, sec),
525 dynobj = hppa_info->root.dynobj;
527 hppa_info->root.dynobj = dynobj = abfd;
529 srel = bfd_get_section_by_name (dynobj, srel_name);
532 srel = bfd_make_section (dynobj, srel_name);
534 || !bfd_set_section_flags (dynobj, srel,
541 || !bfd_set_section_alignment (dynobj, srel, 3))
545 hppa_info->other_rel_sec = srel;
549 /* Add a new entry to the list of dynamic relocations against DYN_H.
551 We use this to keep a record of all the FPTR relocations against a
552 particular symbol so that we can create FPTR relocations in the
556 count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend)
558 struct elf64_hppa_dyn_hash_entry *dyn_h;
565 struct elf64_hppa_dyn_reloc_entry *rent;
567 rent = (struct elf64_hppa_dyn_reloc_entry *)
568 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent));
572 rent->next = dyn_h->reloc_entries;
575 rent->sec_symndx = sec_symndx;
576 rent->offset = offset;
577 rent->addend = addend;
578 dyn_h->reloc_entries = rent;
583 /* Scan the RELOCS and record the type of dynamic entries that each
584 referenced symbol needs. */
587 elf64_hppa_check_relocs (abfd, info, sec, relocs)
589 struct bfd_link_info *info;
591 const Elf_Internal_Rela *relocs;
593 struct elf64_hppa_link_hash_table *hppa_info;
594 const Elf_Internal_Rela *relend;
595 Elf_Internal_Shdr *symtab_hdr;
596 const Elf_Internal_Rela *rel;
597 asection *dlt, *plt, *stubs;
602 if (info->relocatable)
605 /* If this is the first dynamic object found in the link, create
606 the special sections required for dynamic linking. */
607 if (! elf_hash_table (info)->dynamic_sections_created)
609 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
613 hppa_info = elf64_hppa_hash_table (info);
614 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
616 /* If necessary, build a new table holding section symbols indices
619 if (info->shared && hppa_info->section_syms_bfd != abfd)
622 unsigned int highest_shndx;
623 Elf_Internal_Sym *local_syms = NULL;
624 Elf_Internal_Sym *isym, *isymend;
627 /* We're done with the old cache of section index to section symbol
628 index information. Free it.
630 ?!? Note we leak the last section_syms array. Presumably we
631 could free it in one of the later routines in this file. */
632 if (hppa_info->section_syms)
633 free (hppa_info->section_syms);
635 /* Read this BFD's local symbols. */
636 if (symtab_hdr->sh_info != 0)
638 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
639 if (local_syms == NULL)
640 local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr,
641 symtab_hdr->sh_info, 0,
643 if (local_syms == NULL)
647 /* Record the highest section index referenced by the local symbols. */
649 isymend = local_syms + symtab_hdr->sh_info;
650 for (isym = local_syms; isym < isymend; isym++)
652 if (isym->st_shndx > highest_shndx)
653 highest_shndx = isym->st_shndx;
656 /* Allocate an array to hold the section index to section symbol index
657 mapping. Bump by one since we start counting at zero. */
661 hppa_info->section_syms = (int *) bfd_malloc (amt);
663 /* Now walk the local symbols again. If we find a section symbol,
664 record the index of the symbol into the section_syms array. */
665 for (i = 0, isym = local_syms; isym < isymend; i++, isym++)
667 if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
668 hppa_info->section_syms[isym->st_shndx] = i;
671 /* We are finished with the local symbols. */
672 if (local_syms != NULL
673 && symtab_hdr->contents != (unsigned char *) local_syms)
675 if (! info->keep_memory)
679 /* Cache the symbols for elf_link_input_bfd. */
680 symtab_hdr->contents = (unsigned char *) local_syms;
684 /* Record which BFD we built the section_syms mapping for. */
685 hppa_info->section_syms_bfd = abfd;
688 /* Record the symbol index for this input section. We may need it for
689 relocations when building shared libraries. When not building shared
690 libraries this value is never really used, but assign it to zero to
691 prevent out of bounds memory accesses in other routines. */
694 sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec);
696 /* If we did not find a section symbol for this section, then
697 something went terribly wrong above. */
698 if (sec_symndx == -1)
701 sec_symndx = hppa_info->section_syms[sec_symndx];
706 dlt = plt = stubs = NULL;
710 relend = relocs + sec->reloc_count;
711 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 bfd_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
750 && (!info->symbolic || info->unresolved_syms_in_shared_libs == RM_IGNORE))
751 || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
752 || h->root.type == bfd_link_hash_defweak))
753 maybe_dynamic = TRUE;
755 howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info);
759 /* These are simple indirect references to symbols through the
760 DLT. We need to create a DLT entry for any symbols which
761 appears in a DLTIND relocation. */
762 case R_PARISC_DLTIND21L:
763 case R_PARISC_DLTIND14R:
764 case R_PARISC_DLTIND14F:
765 case R_PARISC_DLTIND14WR:
766 case R_PARISC_DLTIND14DR:
767 need_entry = NEED_DLT;
770 /* ?!? These need a DLT entry. But I have no idea what to do with
771 the "link time TP value. */
772 case R_PARISC_LTOFF_TP21L:
773 case R_PARISC_LTOFF_TP14R:
774 case R_PARISC_LTOFF_TP14F:
775 case R_PARISC_LTOFF_TP64:
776 case R_PARISC_LTOFF_TP14WR:
777 case R_PARISC_LTOFF_TP14DR:
778 case R_PARISC_LTOFF_TP16F:
779 case R_PARISC_LTOFF_TP16WF:
780 case R_PARISC_LTOFF_TP16DF:
781 need_entry = NEED_DLT;
784 /* These are function calls. Depending on their precise target we
785 may need to make a stub for them. The stub uses the PLT, so we
786 need to create PLT entries for these symbols too. */
787 case R_PARISC_PCREL12F:
788 case R_PARISC_PCREL17F:
789 case R_PARISC_PCREL22F:
790 case R_PARISC_PCREL32:
791 case R_PARISC_PCREL64:
792 case R_PARISC_PCREL21L:
793 case R_PARISC_PCREL17R:
794 case R_PARISC_PCREL17C:
795 case R_PARISC_PCREL14R:
796 case R_PARISC_PCREL14F:
797 case R_PARISC_PCREL22C:
798 case R_PARISC_PCREL14WR:
799 case R_PARISC_PCREL14DR:
800 case R_PARISC_PCREL16F:
801 case R_PARISC_PCREL16WF:
802 case R_PARISC_PCREL16DF:
803 need_entry = (NEED_PLT | NEED_STUB);
806 case R_PARISC_PLTOFF21L:
807 case R_PARISC_PLTOFF14R:
808 case R_PARISC_PLTOFF14F:
809 case R_PARISC_PLTOFF14WR:
810 case R_PARISC_PLTOFF14DR:
811 case R_PARISC_PLTOFF16F:
812 case R_PARISC_PLTOFF16WF:
813 case R_PARISC_PLTOFF16DF:
814 need_entry = (NEED_PLT);
818 if (info->shared || maybe_dynamic)
819 need_entry = (NEED_DYNREL);
820 dynrel_type = R_PARISC_DIR64;
823 /* This is an indirect reference through the DLT to get the address
824 of a OPD descriptor. Thus we need to make a DLT entry that points
826 case R_PARISC_LTOFF_FPTR21L:
827 case R_PARISC_LTOFF_FPTR14R:
828 case R_PARISC_LTOFF_FPTR14WR:
829 case R_PARISC_LTOFF_FPTR14DR:
830 case R_PARISC_LTOFF_FPTR32:
831 case R_PARISC_LTOFF_FPTR64:
832 case R_PARISC_LTOFF_FPTR16F:
833 case R_PARISC_LTOFF_FPTR16WF:
834 case R_PARISC_LTOFF_FPTR16DF:
835 if (info->shared || maybe_dynamic)
836 need_entry = (NEED_DLT | NEED_OPD);
838 need_entry = (NEED_DLT | NEED_OPD);
839 dynrel_type = R_PARISC_FPTR64;
842 /* This is a simple OPD entry. */
843 case R_PARISC_FPTR64:
844 if (info->shared || maybe_dynamic)
845 need_entry = (NEED_OPD | NEED_DYNREL);
847 need_entry = (NEED_OPD);
848 dynrel_type = R_PARISC_FPTR64;
851 /* Add more cases as needed. */
857 /* Collect a canonical name for this address. */
858 addr_name = get_dyn_name (sec, h, rel, &buf, &buf_len);
860 /* Collect the canonical entry data for this address. */
861 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
862 addr_name, TRUE, TRUE);
865 /* Stash away enough information to be able to find this symbol
866 regardless of whether or not it is local or global. */
869 dyn_h->sym_indx = r_symndx;
871 /* ?!? We may need to do some error checking in here. */
872 /* Create what's needed. */
873 if (need_entry & NEED_DLT)
875 if (! hppa_info->dlt_sec
876 && ! get_dlt (abfd, info, hppa_info))
881 if (need_entry & NEED_PLT)
883 if (! hppa_info->plt_sec
884 && ! get_plt (abfd, info, hppa_info))
889 if (need_entry & NEED_STUB)
891 if (! hppa_info->stub_sec
892 && ! get_stub (abfd, info, hppa_info))
894 dyn_h->want_stub = 1;
897 if (need_entry & NEED_OPD)
899 if (! hppa_info->opd_sec
900 && ! get_opd (abfd, info, hppa_info))
905 /* FPTRs are not allocated by the dynamic linker for PA64, though
906 it is possible that will change in the future. */
908 /* This could be a local function that had its address taken, in
909 which case H will be NULL. */
911 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
914 /* Add a new dynamic relocation to the chain of dynamic
915 relocations for this symbol. */
916 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
918 if (! hppa_info->other_rel_sec
919 && ! get_reloc_section (abfd, hppa_info, sec))
922 if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec,
923 sec_symndx, rel->r_offset, rel->r_addend))
926 /* If we are building a shared library and we just recorded
927 a dynamic R_PARISC_FPTR64 relocation, then make sure the
928 section symbol for this section ends up in the dynamic
930 if (info->shared && dynrel_type == R_PARISC_FPTR64
931 && ! (_bfd_elf64_link_record_local_dynamic_symbol
932 (info, abfd, sec_symndx)))
947 struct elf64_hppa_allocate_data
949 struct bfd_link_info *info;
953 /* Should we do dynamic things to this symbol? */
956 elf64_hppa_dynamic_symbol_p (h, info)
957 struct elf_link_hash_entry *h;
958 struct bfd_link_info *info;
960 /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols
961 and relocations that retrieve a function descriptor? Assume the
963 if (_bfd_elf_dynamic_symbol_p (h, info, 1))
965 /* ??? Why is this here and not elsewhere is_local_label_name. */
966 if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$')
975 /* Mark all funtions exported by this file so that we can later allocate
976 entries in .opd for them. */
979 elf64_hppa_mark_exported_functions (h, data)
980 struct elf_link_hash_entry *h;
983 struct bfd_link_info *info = (struct bfd_link_info *)data;
984 struct elf64_hppa_link_hash_table *hppa_info;
986 hppa_info = elf64_hppa_hash_table (info);
988 if (h->root.type == bfd_link_hash_warning)
989 h = (struct elf_link_hash_entry *) h->root.u.i.link;
992 && (h->root.type == bfd_link_hash_defined
993 || h->root.type == bfd_link_hash_defweak)
994 && h->root.u.def.section->output_section != NULL
995 && h->type == STT_FUNC)
997 struct elf64_hppa_dyn_hash_entry *dyn_h;
999 /* Add this symbol to the PA64 linker hash table. */
1000 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1001 h->root.root.string, TRUE, TRUE);
1005 if (! hppa_info->opd_sec
1006 && ! get_opd (hppa_info->root.dynobj, info, hppa_info))
1009 dyn_h->want_opd = 1;
1010 /* Put a flag here for output_symbol_hook. */
1011 dyn_h->st_shndx = -1;
1012 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1018 /* Allocate space for a DLT entry. */
1021 allocate_global_data_dlt (dyn_h, data)
1022 struct elf64_hppa_dyn_hash_entry *dyn_h;
1025 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1027 if (dyn_h->want_dlt)
1029 struct elf_link_hash_entry *h = dyn_h->h;
1031 if (x->info->shared)
1033 /* Possibly add the symbol to the local dynamic symbol
1034 table since we might need to create a dynamic relocation
1037 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI))
1040 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1042 if (! (_bfd_elf64_link_record_local_dynamic_symbol
1043 (x->info, owner, dyn_h->sym_indx)))
1048 dyn_h->dlt_offset = x->ofs;
1049 x->ofs += DLT_ENTRY_SIZE;
1054 /* Allocate space for a DLT.PLT entry. */
1057 allocate_global_data_plt (dyn_h, data)
1058 struct elf64_hppa_dyn_hash_entry *dyn_h;
1061 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1064 && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
1065 && !((dyn_h->h->root.type == bfd_link_hash_defined
1066 || dyn_h->h->root.type == bfd_link_hash_defweak)
1067 && dyn_h->h->root.u.def.section->output_section != NULL))
1069 dyn_h->plt_offset = x->ofs;
1070 x->ofs += PLT_ENTRY_SIZE;
1071 if (dyn_h->plt_offset < 0x2000)
1072 elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset;
1075 dyn_h->want_plt = 0;
1080 /* Allocate space for a STUB entry. */
1083 allocate_global_data_stub (dyn_h, data)
1084 struct elf64_hppa_dyn_hash_entry *dyn_h;
1087 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1089 if (dyn_h->want_stub
1090 && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
1091 && !((dyn_h->h->root.type == bfd_link_hash_defined
1092 || dyn_h->h->root.type == bfd_link_hash_defweak)
1093 && dyn_h->h->root.u.def.section->output_section != NULL))
1095 dyn_h->stub_offset = x->ofs;
1096 x->ofs += sizeof (plt_stub);
1099 dyn_h->want_stub = 0;
1103 /* Allocate space for a FPTR entry. */
1106 allocate_global_data_opd (dyn_h, data)
1107 struct elf64_hppa_dyn_hash_entry *dyn_h;
1110 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1112 if (dyn_h->want_opd)
1114 struct elf_link_hash_entry *h = dyn_h->h;
1117 while (h->root.type == bfd_link_hash_indirect
1118 || h->root.type == bfd_link_hash_warning)
1119 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1121 /* We never need an opd entry for a symbol which is not
1122 defined by this output file. */
1123 if (h && (h->root.type == bfd_link_hash_undefined
1124 || h->root.u.def.section->output_section == NULL))
1125 dyn_h->want_opd = 0;
1127 /* If we are creating a shared library, took the address of a local
1128 function or might export this function from this object file, then
1129 we have to create an opd descriptor. */
1130 else if (x->info->shared
1132 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)
1133 || (h->root.type == bfd_link_hash_defined
1134 || h->root.type == bfd_link_hash_defweak))
1136 /* If we are creating a shared library, then we will have to
1137 create a runtime relocation for the symbol to properly
1138 initialize the .opd entry. Make sure the symbol gets
1139 added to the dynamic symbol table. */
1141 && (h == NULL || (h->dynindx == -1)))
1144 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1146 if (!_bfd_elf64_link_record_local_dynamic_symbol
1147 (x->info, owner, dyn_h->sym_indx))
1151 /* This may not be necessary or desirable anymore now that
1152 we have some support for dealing with section symbols
1153 in dynamic relocs. But name munging does make the result
1154 much easier to debug. ie, the EPLT reloc will reference
1155 a symbol like .foobar, instead of .text + offset. */
1156 if (x->info->shared && h)
1159 struct elf_link_hash_entry *nh;
1161 new_name = alloca (strlen (h->root.root.string) + 2);
1163 strcpy (new_name + 1, h->root.root.string);
1165 nh = elf_link_hash_lookup (elf_hash_table (x->info),
1166 new_name, TRUE, TRUE, TRUE);
1168 nh->root.type = h->root.type;
1169 nh->root.u.def.value = h->root.u.def.value;
1170 nh->root.u.def.section = h->root.u.def.section;
1172 if (! bfd_elf64_link_record_dynamic_symbol (x->info, nh))
1176 dyn_h->opd_offset = x->ofs;
1177 x->ofs += OPD_ENTRY_SIZE;
1180 /* Otherwise we do not need an opd entry. */
1182 dyn_h->want_opd = 0;
1187 /* HP requires the EI_OSABI field to be filled in. The assignment to
1188 EI_ABIVERSION may not be strictly necessary. */
1191 elf64_hppa_post_process_headers (abfd, link_info)
1193 struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
1195 Elf_Internal_Ehdr * i_ehdrp;
1197 i_ehdrp = elf_elfheader (abfd);
1199 if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0)
1201 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
1205 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
1206 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
1210 /* Create function descriptor section (.opd). This section is called .opd
1211 because it contains "official prodecure descriptors". The "official"
1212 refers to the fact that these descriptors are used when taking the address
1213 of a procedure, thus ensuring a unique address for each procedure. */
1216 get_opd (abfd, info, hppa_info)
1218 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1219 struct elf64_hppa_link_hash_table *hppa_info;
1224 opd = hppa_info->opd_sec;
1227 dynobj = hppa_info->root.dynobj;
1229 hppa_info->root.dynobj = dynobj = abfd;
1231 opd = bfd_make_section (dynobj, ".opd");
1233 || !bfd_set_section_flags (dynobj, opd,
1238 | SEC_LINKER_CREATED))
1239 || !bfd_set_section_alignment (abfd, opd, 3))
1245 hppa_info->opd_sec = opd;
1251 /* Create the PLT section. */
1254 get_plt (abfd, info, hppa_info)
1256 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1257 struct elf64_hppa_link_hash_table *hppa_info;
1262 plt = hppa_info->plt_sec;
1265 dynobj = hppa_info->root.dynobj;
1267 hppa_info->root.dynobj = dynobj = abfd;
1269 plt = bfd_make_section (dynobj, ".plt");
1271 || !bfd_set_section_flags (dynobj, plt,
1276 | SEC_LINKER_CREATED))
1277 || !bfd_set_section_alignment (abfd, plt, 3))
1283 hppa_info->plt_sec = plt;
1289 /* Create the DLT section. */
1292 get_dlt (abfd, info, hppa_info)
1294 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1295 struct elf64_hppa_link_hash_table *hppa_info;
1300 dlt = hppa_info->dlt_sec;
1303 dynobj = hppa_info->root.dynobj;
1305 hppa_info->root.dynobj = dynobj = abfd;
1307 dlt = bfd_make_section (dynobj, ".dlt");
1309 || !bfd_set_section_flags (dynobj, dlt,
1314 | SEC_LINKER_CREATED))
1315 || !bfd_set_section_alignment (abfd, dlt, 3))
1321 hppa_info->dlt_sec = dlt;
1327 /* Create the stubs section. */
1330 get_stub (abfd, info, hppa_info)
1332 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1333 struct elf64_hppa_link_hash_table *hppa_info;
1338 stub = hppa_info->stub_sec;
1341 dynobj = hppa_info->root.dynobj;
1343 hppa_info->root.dynobj = dynobj = abfd;
1345 stub = bfd_make_section (dynobj, ".stub");
1347 || !bfd_set_section_flags (dynobj, stub,
1353 | SEC_LINKER_CREATED))
1354 || !bfd_set_section_alignment (abfd, stub, 3))
1360 hppa_info->stub_sec = stub;
1366 /* Create sections necessary for dynamic linking. This is only a rough
1367 cut and will likely change as we learn more about the somewhat
1368 unusual dynamic linking scheme HP uses.
1371 Contains code to implement cross-space calls. The first time one
1372 of the stubs is used it will call into the dynamic linker, later
1373 calls will go straight to the target.
1375 The only stub we support right now looks like
1379 ldd OFFSET+8(%dp),%dp
1381 Other stubs may be needed in the future. We may want the remove
1382 the break/nop instruction. It is only used right now to keep the
1383 offset of a .plt entry and a .stub entry in sync.
1386 This is what most people call the .got. HP used a different name.
1390 Relocations for the DLT.
1393 Function pointers as address,gp pairs.
1396 Should contain dynamic IPLT (and EPLT?) relocations.
1402 EPLT relocations for symbols exported from shared libraries. */
1405 elf64_hppa_create_dynamic_sections (abfd, info)
1407 struct bfd_link_info *info;
1411 if (! get_stub (abfd, info, elf64_hppa_hash_table (info)))
1414 if (! get_dlt (abfd, info, elf64_hppa_hash_table (info)))
1417 if (! get_plt (abfd, info, elf64_hppa_hash_table (info)))
1420 if (! get_opd (abfd, info, elf64_hppa_hash_table (info)))
1423 s = bfd_make_section(abfd, ".rela.dlt");
1425 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1429 | SEC_LINKER_CREATED))
1430 || !bfd_set_section_alignment (abfd, s, 3))
1432 elf64_hppa_hash_table (info)->dlt_rel_sec = s;
1434 s = bfd_make_section(abfd, ".rela.plt");
1436 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1440 | SEC_LINKER_CREATED))
1441 || !bfd_set_section_alignment (abfd, s, 3))
1443 elf64_hppa_hash_table (info)->plt_rel_sec = s;
1445 s = bfd_make_section(abfd, ".rela.data");
1447 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1451 | SEC_LINKER_CREATED))
1452 || !bfd_set_section_alignment (abfd, s, 3))
1454 elf64_hppa_hash_table (info)->other_rel_sec = s;
1456 s = bfd_make_section(abfd, ".rela.opd");
1458 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1462 | SEC_LINKER_CREATED))
1463 || !bfd_set_section_alignment (abfd, s, 3))
1465 elf64_hppa_hash_table (info)->opd_rel_sec = s;
1470 /* Allocate dynamic relocations for those symbols that turned out
1474 allocate_dynrel_entries (dyn_h, data)
1475 struct elf64_hppa_dyn_hash_entry *dyn_h;
1478 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1479 struct elf64_hppa_link_hash_table *hppa_info;
1480 struct elf64_hppa_dyn_reloc_entry *rent;
1481 bfd_boolean dynamic_symbol, shared;
1483 hppa_info = elf64_hppa_hash_table (x->info);
1484 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info);
1485 shared = x->info->shared;
1487 /* We may need to allocate relocations for a non-dynamic symbol
1488 when creating a shared library. */
1489 if (!dynamic_symbol && !shared)
1492 /* Take care of the normal data relocations. */
1494 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
1496 /* Allocate one iff we are building a shared library, the relocation
1497 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
1498 if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
1501 hppa_info->other_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1503 /* Make sure this symbol gets into the dynamic symbol table if it is
1504 not already recorded. ?!? This should not be in the loop since
1505 the symbol need only be added once. */
1507 || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI))
1508 if (!_bfd_elf64_link_record_local_dynamic_symbol
1509 (x->info, rent->sec->owner, dyn_h->sym_indx))
1513 /* Take care of the GOT and PLT relocations. */
1515 if ((dynamic_symbol || shared) && dyn_h->want_dlt)
1516 hppa_info->dlt_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1518 /* If we are building a shared library, then every symbol that has an
1519 opd entry will need an EPLT relocation to relocate the symbol's address
1520 and __gp value based on the runtime load address. */
1521 if (shared && dyn_h->want_opd)
1522 hppa_info->opd_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1524 if (dyn_h->want_plt && dynamic_symbol)
1526 bfd_size_type t = 0;
1528 /* Dynamic symbols get one IPLT relocation. Local symbols in
1529 shared libraries get two REL relocations. Local symbols in
1530 main applications get nothing. */
1532 t = sizeof (Elf64_External_Rela);
1534 t = 2 * sizeof (Elf64_External_Rela);
1536 hppa_info->plt_rel_sec->_raw_size += t;
1542 /* Adjust a symbol defined by a dynamic object and referenced by a
1546 elf64_hppa_adjust_dynamic_symbol (info, h)
1547 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1548 struct elf_link_hash_entry *h;
1550 /* ??? Undefined symbols with PLT entries should be re-defined
1551 to be the PLT entry. */
1553 /* If this is a weak symbol, and there is a real definition, the
1554 processor independent code will have arranged for us to see the
1555 real definition first, and we can just use the same value. */
1556 if (h->weakdef != NULL)
1558 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1559 || h->weakdef->root.type == bfd_link_hash_defweak);
1560 h->root.u.def.section = h->weakdef->root.u.def.section;
1561 h->root.u.def.value = h->weakdef->root.u.def.value;
1565 /* If this is a reference to a symbol defined by a dynamic object which
1566 is not a function, we might allocate the symbol in our .dynbss section
1567 and allocate a COPY dynamic relocation.
1569 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1575 /* This function is called via elf_link_hash_traverse to mark millicode
1576 symbols with a dynindx of -1 and to remove the string table reference
1577 from the dynamic symbol table. If the symbol is not a millicode symbol,
1578 elf64_hppa_mark_exported_functions is called. */
1581 elf64_hppa_mark_milli_and_exported_functions (h, data)
1582 struct elf_link_hash_entry *h;
1585 struct bfd_link_info *info = (struct bfd_link_info *)data;
1586 struct elf_link_hash_entry *elf = h;
1588 if (elf->root.type == bfd_link_hash_warning)
1589 elf = (struct elf_link_hash_entry *) elf->root.u.i.link;
1591 if (elf->type == STT_PARISC_MILLI)
1593 if (elf->dynindx != -1)
1596 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1602 return elf64_hppa_mark_exported_functions (h, data);
1605 /* Set the final sizes of the dynamic sections and allocate memory for
1606 the contents of our special sections. */
1609 elf64_hppa_size_dynamic_sections (output_bfd, info)
1611 struct bfd_link_info *info;
1617 bfd_boolean reltext;
1618 struct elf64_hppa_allocate_data data;
1619 struct elf64_hppa_link_hash_table *hppa_info;
1621 hppa_info = elf64_hppa_hash_table (info);
1623 dynobj = elf_hash_table (info)->dynobj;
1624 BFD_ASSERT (dynobj != NULL);
1626 /* Mark each function this program exports so that we will allocate
1627 space in the .opd section for each function's FPTR. If we are
1628 creating dynamic sections, change the dynamic index of millicode
1629 symbols to -1 and remove them from the string table for .dynstr.
1631 We have to traverse the main linker hash table since we have to
1632 find functions which may not have been mentioned in any relocs. */
1633 elf_link_hash_traverse (elf_hash_table (info),
1634 (elf_hash_table (info)->dynamic_sections_created
1635 ? elf64_hppa_mark_milli_and_exported_functions
1636 : elf64_hppa_mark_exported_functions),
1639 if (elf_hash_table (info)->dynamic_sections_created)
1641 /* Set the contents of the .interp section to the interpreter. */
1644 s = bfd_get_section_by_name (dynobj, ".interp");
1645 BFD_ASSERT (s != NULL);
1646 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1647 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1652 /* We may have created entries in the .rela.got section.
1653 However, if we are not creating the dynamic sections, we will
1654 not actually use these entries. Reset the size of .rela.dlt,
1655 which will cause it to get stripped from the output file
1657 s = bfd_get_section_by_name (dynobj, ".rela.dlt");
1662 /* Allocate the GOT entries. */
1665 if (elf64_hppa_hash_table (info)->dlt_sec)
1668 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1669 allocate_global_data_dlt, &data);
1670 hppa_info->dlt_sec->_raw_size = data.ofs;
1673 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1674 allocate_global_data_plt, &data);
1675 hppa_info->plt_sec->_raw_size = data.ofs;
1678 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1679 allocate_global_data_stub, &data);
1680 hppa_info->stub_sec->_raw_size = data.ofs;
1683 /* Allocate space for entries in the .opd section. */
1684 if (elf64_hppa_hash_table (info)->opd_sec)
1687 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1688 allocate_global_data_opd, &data);
1689 hppa_info->opd_sec->_raw_size = data.ofs;
1692 /* Now allocate space for dynamic relocations, if necessary. */
1693 if (hppa_info->root.dynamic_sections_created)
1694 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1695 allocate_dynrel_entries, &data);
1697 /* The sizes of all the sections are set. Allocate memory for them. */
1701 for (s = dynobj->sections; s != NULL; s = s->next)
1706 if ((s->flags & SEC_LINKER_CREATED) == 0)
1709 /* It's OK to base decisions on the section name, because none
1710 of the dynobj section names depend upon the input files. */
1711 name = bfd_get_section_name (dynobj, s);
1715 if (strcmp (name, ".plt") == 0)
1717 /* Strip this section if we don't need it; see the comment below. */
1718 if (s->_raw_size == 0)
1724 /* Remember whether there is a PLT. */
1728 else if (strcmp (name, ".dlt") == 0)
1730 /* Strip this section if we don't need it; see the comment below. */
1731 if (s->_raw_size == 0)
1736 else if (strcmp (name, ".opd") == 0)
1738 /* Strip this section if we don't need it; see the comment below. */
1739 if (s->_raw_size == 0)
1744 else if (strncmp (name, ".rela", 5) == 0)
1746 /* If we don't need this section, strip it from the output file.
1747 This is mostly to handle .rela.bss and .rela.plt. We must
1748 create both sections in create_dynamic_sections, because they
1749 must be created before the linker maps input sections to output
1750 sections. The linker does that before adjust_dynamic_symbol
1751 is called, and it is that function which decides whether
1752 anything needs to go into these sections. */
1753 if (s->_raw_size == 0)
1755 /* If we don't need this section, strip it from the
1756 output file. This is mostly to handle .rela.bss and
1757 .rela.plt. We must create both sections in
1758 create_dynamic_sections, because they must be created
1759 before the linker maps input sections to output
1760 sections. The linker does that before
1761 adjust_dynamic_symbol is called, and it is that
1762 function which decides whether anything needs to go
1763 into these sections. */
1770 /* Remember whether there are any reloc sections other
1772 if (strcmp (name, ".rela.plt") != 0)
1774 const char *outname;
1778 /* If this relocation section applies to a read only
1779 section, then we probably need a DT_TEXTREL
1780 entry. The entries in the .rela.plt section
1781 really apply to the .got section, which we
1782 created ourselves and so know is not readonly. */
1783 outname = bfd_get_section_name (output_bfd,
1785 target = bfd_get_section_by_name (output_bfd, outname + 4);
1787 && (target->flags & SEC_READONLY) != 0
1788 && (target->flags & SEC_ALLOC) != 0)
1792 /* We use the reloc_count field as a counter if we need
1793 to copy relocs into the output file. */
1797 else if (strncmp (name, ".dlt", 4) != 0
1798 && strcmp (name, ".stub") != 0
1799 && strcmp (name, ".got") != 0)
1801 /* It's not one of our sections, so don't allocate space. */
1807 _bfd_strip_section_from_output (info, s);
1811 /* Allocate memory for the section contents if it has not
1812 been allocated already. We use bfd_zalloc here in case
1813 unused entries are not reclaimed before the section's
1814 contents are written out. This should not happen, but this
1815 way if it does, we get a R_PARISC_NONE reloc instead of
1817 if (s->contents == NULL)
1819 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1820 if (s->contents == NULL && s->_raw_size != 0)
1825 if (elf_hash_table (info)->dynamic_sections_created)
1827 /* Always create a DT_PLTGOT. It actually has nothing to do with
1828 the PLT, it is how we communicate the __gp value of a load
1829 module to the dynamic linker. */
1830 #define add_dynamic_entry(TAG, VAL) \
1831 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1833 if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0)
1834 || !add_dynamic_entry (DT_PLTGOT, 0))
1837 /* Add some entries to the .dynamic section. We fill in the
1838 values later, in elf64_hppa_finish_dynamic_sections, but we
1839 must add the entries now so that we get the correct size for
1840 the .dynamic section. The DT_DEBUG entry is filled in by the
1841 dynamic linker and used by the debugger. */
1844 if (!add_dynamic_entry (DT_DEBUG, 0)
1845 || !add_dynamic_entry (DT_HP_DLD_HOOK, 0)
1846 || !add_dynamic_entry (DT_HP_LOAD_MAP, 0))
1850 /* Force DT_FLAGS to always be set.
1851 Required by HPUX 11.00 patch PHSS_26559. */
1852 if (!add_dynamic_entry (DT_FLAGS, (info)->flags))
1857 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
1858 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1859 || !add_dynamic_entry (DT_JMPREL, 0))
1865 if (!add_dynamic_entry (DT_RELA, 0)
1866 || !add_dynamic_entry (DT_RELASZ, 0)
1867 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
1873 if (!add_dynamic_entry (DT_TEXTREL, 0))
1875 info->flags |= DF_TEXTREL;
1878 #undef add_dynamic_entry
1883 /* Called after we have output the symbol into the dynamic symbol
1884 table, but before we output the symbol into the normal symbol
1887 For some symbols we had to change their address when outputting
1888 the dynamic symbol table. We undo that change here so that
1889 the symbols have their expected value in the normal symbol
1893 elf64_hppa_link_output_symbol_hook (abfd, info, name, sym, input_sec)
1894 bfd *abfd ATTRIBUTE_UNUSED;
1895 struct bfd_link_info *info;
1897 Elf_Internal_Sym *sym;
1898 asection *input_sec ATTRIBUTE_UNUSED;
1900 struct elf64_hppa_link_hash_table *hppa_info;
1901 struct elf64_hppa_dyn_hash_entry *dyn_h;
1903 /* We may be called with the file symbol or section symbols.
1904 They never need munging, so it is safe to ignore them. */
1908 /* Get the PA dyn_symbol (if any) associated with NAME. */
1909 hppa_info = elf64_hppa_hash_table (info);
1910 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1911 name, FALSE, FALSE);
1913 /* Function symbols for which we created .opd entries *may* have been
1914 munged by finish_dynamic_symbol and have to be un-munged here.
1916 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1917 into non-dynamic ones, so we initialize st_shndx to -1 in
1918 mark_exported_functions and check to see if it was overwritten
1919 here instead of just checking dyn_h->h->dynindx. */
1920 if (dyn_h && dyn_h->want_opd && dyn_h->st_shndx != -1)
1922 /* Restore the saved value and section index. */
1923 sym->st_value = dyn_h->st_value;
1924 sym->st_shndx = dyn_h->st_shndx;
1930 /* Finish up dynamic symbol handling. We set the contents of various
1931 dynamic sections here. */
1934 elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
1936 struct bfd_link_info *info;
1937 struct elf_link_hash_entry *h;
1938 Elf_Internal_Sym *sym;
1940 asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel;
1941 struct elf64_hppa_link_hash_table *hppa_info;
1942 struct elf64_hppa_dyn_hash_entry *dyn_h;
1944 hppa_info = elf64_hppa_hash_table (info);
1945 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1946 h->root.root.string, FALSE, FALSE);
1948 stub = hppa_info->stub_sec;
1949 splt = hppa_info->plt_sec;
1950 sdlt = hppa_info->dlt_sec;
1951 sopd = hppa_info->opd_sec;
1952 spltrel = hppa_info->plt_rel_sec;
1953 sdltrel = hppa_info->dlt_rel_sec;
1955 /* Incredible. It is actually necessary to NOT use the symbol's real
1956 value when building the dynamic symbol table for a shared library.
1957 At least for symbols that refer to functions.
1959 We will store a new value and section index into the symbol long
1960 enough to output it into the dynamic symbol table, then we restore
1961 the original values (in elf64_hppa_link_output_symbol_hook). */
1962 if (dyn_h && dyn_h->want_opd)
1964 BFD_ASSERT (sopd != NULL)
1966 /* Save away the original value and section index so that we
1967 can restore them later. */
1968 dyn_h->st_value = sym->st_value;
1969 dyn_h->st_shndx = sym->st_shndx;
1971 /* For the dynamic symbol table entry, we want the value to be
1972 address of this symbol's entry within the .opd section. */
1973 sym->st_value = (dyn_h->opd_offset
1974 + sopd->output_offset
1975 + sopd->output_section->vma);
1976 sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
1977 sopd->output_section);
1980 /* Initialize a .plt entry if requested. */
1981 if (dyn_h && dyn_h->want_plt
1982 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
1985 Elf_Internal_Rela rel;
1988 BFD_ASSERT (splt != NULL && spltrel != NULL)
1990 /* We do not actually care about the value in the PLT entry
1991 if we are creating a shared library and the symbol is
1992 still undefined, we create a dynamic relocation to fill
1993 in the correct value. */
1994 if (info->shared && h->root.type == bfd_link_hash_undefined)
1997 value = (h->root.u.def.value + h->root.u.def.section->vma);
1999 /* Fill in the entry in the procedure linkage table.
2001 The format of a plt entry is
2004 plt_offset is the offset within the PLT section at which to
2005 install the PLT entry.
2007 We are modifying the in-memory PLT contents here, so we do not add
2008 in the output_offset of the PLT section. */
2010 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset);
2011 value = _bfd_get_gp_value (splt->output_section->owner);
2012 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8);
2014 /* Create a dynamic IPLT relocation for this entry.
2016 We are creating a relocation in the output file's PLT section,
2017 which is included within the DLT secton. So we do need to include
2018 the PLT's output_offset in the computation of the relocation's
2020 rel.r_offset = (dyn_h->plt_offset + splt->output_offset
2021 + splt->output_section->vma);
2022 rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT);
2025 loc = spltrel->contents;
2026 loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela);
2027 bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc);
2030 /* Initialize an external call stub entry if requested. */
2031 if (dyn_h && dyn_h->want_stub
2032 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
2036 unsigned int max_offset;
2038 BFD_ASSERT (stub != NULL)
2040 /* Install the generic stub template.
2042 We are modifying the contents of the stub section, so we do not
2043 need to include the stub section's output_offset here. */
2044 memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub));
2046 /* Fix up the first ldd instruction.
2048 We are modifying the contents of the STUB section in memory,
2049 so we do not need to include its output offset in this computation.
2051 Note the plt_offset value is the value of the PLT entry relative to
2052 the start of the PLT section. These instructions will reference
2053 data relative to the value of __gp, which may not necessarily have
2054 the same address as the start of the PLT section.
2056 gp_offset contains the offset of __gp within the PLT section. */
2057 value = dyn_h->plt_offset - hppa_info->gp_offset;
2059 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset);
2060 if (output_bfd->arch_info->mach >= 25)
2062 /* Wide mode allows 16 bit offsets. */
2065 insn |= re_assemble_16 ((int) value);
2071 insn |= re_assemble_14 ((int) value);
2074 if ((value & 7) || value + max_offset >= 2*max_offset - 8)
2076 (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"),
2082 bfd_put_32 (stub->owner, (bfd_vma) insn,
2083 stub->contents + dyn_h->stub_offset);
2085 /* Fix up the second ldd instruction. */
2087 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8);
2088 if (output_bfd->arch_info->mach >= 25)
2091 insn |= re_assemble_16 ((int) value);
2096 insn |= re_assemble_14 ((int) value);
2098 bfd_put_32 (stub->owner, (bfd_vma) insn,
2099 stub->contents + dyn_h->stub_offset + 8);
2105 /* The .opd section contains FPTRs for each function this file
2106 exports. Initialize the FPTR entries. */
2109 elf64_hppa_finalize_opd (dyn_h, data)
2110 struct elf64_hppa_dyn_hash_entry *dyn_h;
2113 struct bfd_link_info *info = (struct bfd_link_info *)data;
2114 struct elf64_hppa_link_hash_table *hppa_info;
2115 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
2119 hppa_info = elf64_hppa_hash_table (info);
2120 sopd = hppa_info->opd_sec;
2121 sopdrel = hppa_info->opd_rel_sec;
2123 if (h && dyn_h->want_opd)
2127 /* The first two words of an .opd entry are zero.
2129 We are modifying the contents of the OPD section in memory, so we
2130 do not need to include its output offset in this computation. */
2131 memset (sopd->contents + dyn_h->opd_offset, 0, 16);
2133 value = (h->root.u.def.value
2134 + h->root.u.def.section->output_section->vma
2135 + h->root.u.def.section->output_offset);
2137 /* The next word is the address of the function. */
2138 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16);
2140 /* The last word is our local __gp value. */
2141 value = _bfd_get_gp_value (sopd->output_section->owner);
2142 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24);
2145 /* If we are generating a shared library, we must generate EPLT relocations
2146 for each entry in the .opd, even for static functions (they may have
2147 had their address taken). */
2148 if (info->shared && dyn_h && dyn_h->want_opd)
2150 Elf_Internal_Rela rel;
2154 /* We may need to do a relocation against a local symbol, in
2155 which case we have to look up it's dynamic symbol index off
2156 the local symbol hash table. */
2157 if (h && h->dynindx != -1)
2158 dynindx = h->dynindx;
2161 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2164 /* The offset of this relocation is the absolute address of the
2165 .opd entry for this symbol. */
2166 rel.r_offset = (dyn_h->opd_offset + sopd->output_offset
2167 + sopd->output_section->vma);
2169 /* If H is non-null, then we have an external symbol.
2171 It is imperative that we use a different dynamic symbol for the
2172 EPLT relocation if the symbol has global scope.
2174 In the dynamic symbol table, the function symbol will have a value
2175 which is address of the function's .opd entry.
2177 Thus, we can not use that dynamic symbol for the EPLT relocation
2178 (if we did, the data in the .opd would reference itself rather
2179 than the actual address of the function). Instead we have to use
2180 a new dynamic symbol which has the same value as the original global
2183 We prefix the original symbol with a "." and use the new symbol in
2184 the EPLT relocation. This new symbol has already been recorded in
2185 the symbol table, we just have to look it up and use it.
2187 We do not have such problems with static functions because we do
2188 not make their addresses in the dynamic symbol table point to
2189 the .opd entry. Ultimately this should be safe since a static
2190 function can not be directly referenced outside of its shared
2193 We do have to play similar games for FPTR relocations in shared
2194 libraries, including those for static symbols. See the FPTR
2195 handling in elf64_hppa_finalize_dynreloc. */
2199 struct elf_link_hash_entry *nh;
2201 new_name = alloca (strlen (h->root.root.string) + 2);
2203 strcpy (new_name + 1, h->root.root.string);
2205 nh = elf_link_hash_lookup (elf_hash_table (info),
2206 new_name, FALSE, FALSE, FALSE);
2208 /* All we really want from the new symbol is its dynamic
2210 dynindx = nh->dynindx;
2214 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT);
2216 loc = sopdrel->contents;
2217 loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela);
2218 bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc);
2223 /* The .dlt section contains addresses for items referenced through the
2224 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2225 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2228 elf64_hppa_finalize_dlt (dyn_h, data)
2229 struct elf64_hppa_dyn_hash_entry *dyn_h;
2232 struct bfd_link_info *info = (struct bfd_link_info *)data;
2233 struct elf64_hppa_link_hash_table *hppa_info;
2234 asection *sdlt, *sdltrel;
2235 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
2237 hppa_info = elf64_hppa_hash_table (info);
2239 sdlt = hppa_info->dlt_sec;
2240 sdltrel = hppa_info->dlt_rel_sec;
2242 /* H/DYN_H may refer to a local variable and we know it's
2243 address, so there is no need to create a relocation. Just install
2244 the proper value into the DLT, note this shortcut can not be
2245 skipped when building a shared library. */
2246 if (! info->shared && h && dyn_h->want_dlt)
2250 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2251 to point to the FPTR entry in the .opd section.
2253 We include the OPD's output offset in this computation as
2254 we are referring to an absolute address in the resulting
2256 if (dyn_h->want_opd)
2258 value = (dyn_h->opd_offset
2259 + hppa_info->opd_sec->output_offset
2260 + hppa_info->opd_sec->output_section->vma);
2262 else if ((h->root.type == bfd_link_hash_defined
2263 || h->root.type == bfd_link_hash_defweak)
2264 && h->root.u.def.section)
2266 value = h->root.u.def.value + h->root.u.def.section->output_offset;
2267 if (h->root.u.def.section->output_section)
2268 value += h->root.u.def.section->output_section->vma;
2270 value += h->root.u.def.section->vma;
2273 /* We have an undefined function reference. */
2276 /* We do not need to include the output offset of the DLT section
2277 here because we are modifying the in-memory contents. */
2278 bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset);
2281 /* Create a relocation for the DLT entry assocated with this symbol.
2282 When building a shared library the symbol does not have to be dynamic. */
2284 && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared))
2286 Elf_Internal_Rela rel;
2290 /* We may need to do a relocation against a local symbol, in
2291 which case we have to look up it's dynamic symbol index off
2292 the local symbol hash table. */
2293 if (h && h->dynindx != -1)
2294 dynindx = h->dynindx;
2297 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2300 /* Create a dynamic relocation for this entry. Do include the output
2301 offset of the DLT entry since we need an absolute address in the
2302 resulting object file. */
2303 rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset
2304 + sdlt->output_section->vma);
2305 if (h && h->type == STT_FUNC)
2306 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64);
2308 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64);
2311 loc = sdltrel->contents;
2312 loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela);
2313 bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc);
2318 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2319 for dynamic functions used to initialize static data. */
2322 elf64_hppa_finalize_dynreloc (dyn_h, data)
2323 struct elf64_hppa_dyn_hash_entry *dyn_h;
2326 struct bfd_link_info *info = (struct bfd_link_info *)data;
2327 struct elf64_hppa_link_hash_table *hppa_info;
2328 struct elf_link_hash_entry *h;
2331 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info);
2333 if (!dynamic_symbol && !info->shared)
2336 if (dyn_h->reloc_entries)
2338 struct elf64_hppa_dyn_reloc_entry *rent;
2341 hppa_info = elf64_hppa_hash_table (info);
2344 /* We may need to do a relocation against a local symbol, in
2345 which case we have to look up it's dynamic symbol index off
2346 the local symbol hash table. */
2347 if (h && h->dynindx != -1)
2348 dynindx = h->dynindx;
2351 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2354 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
2356 Elf_Internal_Rela rel;
2359 /* Allocate one iff we are building a shared library, the relocation
2360 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
2361 if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
2364 /* Create a dynamic relocation for this entry.
2366 We need the output offset for the reloc's section because
2367 we are creating an absolute address in the resulting object
2369 rel.r_offset = (rent->offset + rent->sec->output_offset
2370 + rent->sec->output_section->vma);
2372 /* An FPTR64 relocation implies that we took the address of
2373 a function and that the function has an entry in the .opd
2374 section. We want the FPTR64 relocation to reference the
2377 We could munge the symbol value in the dynamic symbol table
2378 (in fact we already do for functions with global scope) to point
2379 to the .opd entry. Then we could use that dynamic symbol in
2382 Or we could do something sensible, not munge the symbol's
2383 address and instead just use a different symbol to reference
2384 the .opd entry. At least that seems sensible until you
2385 realize there's no local dynamic symbols we can use for that
2386 purpose. Thus the hair in the check_relocs routine.
2388 We use a section symbol recorded by check_relocs as the
2389 base symbol for the relocation. The addend is the difference
2390 between the section symbol and the address of the .opd entry. */
2391 if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
2393 bfd_vma value, value2;
2395 /* First compute the address of the opd entry for this symbol. */
2396 value = (dyn_h->opd_offset
2397 + hppa_info->opd_sec->output_section->vma
2398 + hppa_info->opd_sec->output_offset);
2400 /* Compute the value of the start of the section with
2402 value2 = (rent->sec->output_section->vma
2403 + rent->sec->output_offset);
2405 /* Compute the difference between the start of the section
2406 with the relocation and the opd entry. */
2409 /* The result becomes the addend of the relocation. */
2410 rel.r_addend = value;
2412 /* The section symbol becomes the symbol for the dynamic
2415 = _bfd_elf_link_lookup_local_dynindx (info,
2420 rel.r_addend = rent->addend;
2422 rel.r_info = ELF64_R_INFO (dynindx, rent->type);
2424 loc = hppa_info->other_rel_sec->contents;
2425 loc += (hppa_info->other_rel_sec->reloc_count++
2426 * sizeof (Elf64_External_Rela));
2427 bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner,
2435 /* Used to decide how to sort relocs in an optimal manner for the
2436 dynamic linker, before writing them out. */
2438 static enum elf_reloc_type_class
2439 elf64_hppa_reloc_type_class (rela)
2440 const Elf_Internal_Rela *rela;
2442 if (ELF64_R_SYM (rela->r_info) == 0)
2443 return reloc_class_relative;
2445 switch ((int) ELF64_R_TYPE (rela->r_info))
2448 return reloc_class_plt;
2450 return reloc_class_copy;
2452 return reloc_class_normal;
2456 /* Finish up the dynamic sections. */
2459 elf64_hppa_finish_dynamic_sections (output_bfd, info)
2461 struct bfd_link_info *info;
2465 struct elf64_hppa_link_hash_table *hppa_info;
2467 hppa_info = elf64_hppa_hash_table (info);
2469 /* Finalize the contents of the .opd section. */
2470 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2471 elf64_hppa_finalize_opd,
2474 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2475 elf64_hppa_finalize_dynreloc,
2478 /* Finalize the contents of the .dlt section. */
2479 dynobj = elf_hash_table (info)->dynobj;
2480 /* Finalize the contents of the .dlt section. */
2481 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2482 elf64_hppa_finalize_dlt,
2485 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2487 if (elf_hash_table (info)->dynamic_sections_created)
2489 Elf64_External_Dyn *dyncon, *dynconend;
2491 BFD_ASSERT (sdyn != NULL);
2493 dyncon = (Elf64_External_Dyn *) sdyn->contents;
2494 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2495 for (; dyncon < dynconend; dyncon++)
2497 Elf_Internal_Dyn dyn;
2500 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
2507 case DT_HP_LOAD_MAP:
2508 /* Compute the absolute address of 16byte scratchpad area
2509 for the dynamic linker.
2511 By convention the linker script will allocate the scratchpad
2512 area at the start of the .data section. So all we have to
2513 to is find the start of the .data section. */
2514 s = bfd_get_section_by_name (output_bfd, ".data");
2515 dyn.d_un.d_ptr = s->vma;
2516 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2520 /* HP's use PLTGOT to set the GOT register. */
2521 dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd);
2522 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2526 s = hppa_info->plt_rel_sec;
2527 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2528 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2532 s = hppa_info->plt_rel_sec;
2533 dyn.d_un.d_val = s->_raw_size;
2534 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2538 s = hppa_info->other_rel_sec;
2539 if (! s || ! s->_raw_size)
2540 s = hppa_info->dlt_rel_sec;
2541 if (! s || ! s->_raw_size)
2542 s = hppa_info->opd_rel_sec;
2543 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2544 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2548 s = hppa_info->other_rel_sec;
2549 dyn.d_un.d_val = s->_raw_size;
2550 s = hppa_info->dlt_rel_sec;
2551 dyn.d_un.d_val += s->_raw_size;
2552 s = hppa_info->opd_rel_sec;
2553 dyn.d_un.d_val += s->_raw_size;
2554 /* There is some question about whether or not the size of
2555 the PLT relocs should be included here. HP's tools do
2556 it, so we'll emulate them. */
2557 s = hppa_info->plt_rel_sec;
2558 dyn.d_un.d_val += s->_raw_size;
2559 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2569 /* Return the number of additional phdrs we will need.
2571 The generic ELF code only creates PT_PHDRs for executables. The HP
2572 dynamic linker requires PT_PHDRs for dynamic libraries too.
2574 This routine indicates that the backend needs one additional program
2575 header for that case.
2577 Note we do not have access to the link info structure here, so we have
2578 to guess whether or not we are building a shared library based on the
2579 existence of a .interp section. */
2582 elf64_hppa_additional_program_headers (abfd)
2587 /* If we are creating a shared library, then we have to create a
2588 PT_PHDR segment. HP's dynamic linker chokes without it. */
2589 s = bfd_get_section_by_name (abfd, ".interp");
2595 /* Allocate and initialize any program headers required by this
2598 The generic ELF code only creates PT_PHDRs for executables. The HP
2599 dynamic linker requires PT_PHDRs for dynamic libraries too.
2601 This allocates the PT_PHDR and initializes it in a manner suitable
2604 Note we do not have access to the link info structure here, so we have
2605 to guess whether or not we are building a shared library based on the
2606 existence of a .interp section. */
2609 elf64_hppa_modify_segment_map (abfd)
2612 struct elf_segment_map *m;
2615 s = bfd_get_section_by_name (abfd, ".interp");
2618 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2619 if (m->p_type == PT_PHDR)
2623 m = ((struct elf_segment_map *)
2624 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
2628 m->p_type = PT_PHDR;
2629 m->p_flags = PF_R | PF_X;
2630 m->p_flags_valid = 1;
2631 m->p_paddr_valid = 1;
2632 m->includes_phdrs = 1;
2634 m->next = elf_tdata (abfd)->segment_map;
2635 elf_tdata (abfd)->segment_map = m;
2639 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2640 if (m->p_type == PT_LOAD)
2644 for (i = 0; i < m->count; i++)
2646 /* The code "hint" is not really a hint. It is a requirement
2647 for certain versions of the HP dynamic linker. Worse yet,
2648 it must be set even if the shared library does not have
2649 any code in its "text" segment (thus the check for .hash
2650 to catch this situation). */
2651 if (m->sections[i]->flags & SEC_CODE
2652 || (strcmp (m->sections[i]->name, ".hash") == 0))
2653 m->p_flags |= (PF_X | PF_HP_CODE);
2660 /* Called when writing out an object file to decide the type of a
2663 elf64_hppa_elf_get_symbol_type (elf_sym, type)
2664 Elf_Internal_Sym *elf_sym;
2667 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
2668 return STT_PARISC_MILLI;
2673 static struct bfd_elf_special_section const elf64_hppa_special_sections[]=
2675 { ".fini", 0, NULL, 0,
2676 SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2677 { ".init", 0, NULL, 0,
2678 SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2683 /* The hash bucket size is the standard one, namely 4. */
2685 const struct elf_size_info hppa64_elf_size_info =
2687 sizeof (Elf64_External_Ehdr),
2688 sizeof (Elf64_External_Phdr),
2689 sizeof (Elf64_External_Shdr),
2690 sizeof (Elf64_External_Rel),
2691 sizeof (Elf64_External_Rela),
2692 sizeof (Elf64_External_Sym),
2693 sizeof (Elf64_External_Dyn),
2694 sizeof (Elf_External_Note),
2698 ELFCLASS64, EV_CURRENT,
2699 bfd_elf64_write_out_phdrs,
2700 bfd_elf64_write_shdrs_and_ehdr,
2701 bfd_elf64_write_relocs,
2702 bfd_elf64_swap_symbol_in,
2703 bfd_elf64_swap_symbol_out,
2704 bfd_elf64_slurp_reloc_table,
2705 bfd_elf64_slurp_symbol_table,
2706 bfd_elf64_swap_dyn_in,
2707 bfd_elf64_swap_dyn_out,
2708 bfd_elf64_swap_reloc_in,
2709 bfd_elf64_swap_reloc_out,
2710 bfd_elf64_swap_reloca_in,
2711 bfd_elf64_swap_reloca_out
2714 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2715 #define TARGET_BIG_NAME "elf64-hppa"
2716 #define ELF_ARCH bfd_arch_hppa
2717 #define ELF_MACHINE_CODE EM_PARISC
2718 /* This is not strictly correct. The maximum page size for PA2.0 is
2719 64M. But everything still uses 4k. */
2720 #define ELF_MAXPAGESIZE 0x1000
2721 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2722 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2723 #define elf_info_to_howto elf_hppa_info_to_howto
2724 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2726 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2727 #define elf_backend_object_p elf64_hppa_object_p
2728 #define elf_backend_final_write_processing \
2729 elf_hppa_final_write_processing
2730 #define elf_backend_fake_sections elf_hppa_fake_sections
2731 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2733 #define elf_backend_relocate_section elf_hppa_relocate_section
2735 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2737 #define elf_backend_create_dynamic_sections \
2738 elf64_hppa_create_dynamic_sections
2739 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2741 #define elf_backend_adjust_dynamic_symbol \
2742 elf64_hppa_adjust_dynamic_symbol
2744 #define elf_backend_size_dynamic_sections \
2745 elf64_hppa_size_dynamic_sections
2747 #define elf_backend_finish_dynamic_symbol \
2748 elf64_hppa_finish_dynamic_symbol
2749 #define elf_backend_finish_dynamic_sections \
2750 elf64_hppa_finish_dynamic_sections
2752 /* Stuff for the BFD linker: */
2753 #define bfd_elf64_bfd_link_hash_table_create \
2754 elf64_hppa_hash_table_create
2756 #define elf_backend_check_relocs \
2757 elf64_hppa_check_relocs
2759 #define elf_backend_size_info \
2760 hppa64_elf_size_info
2762 #define elf_backend_additional_program_headers \
2763 elf64_hppa_additional_program_headers
2765 #define elf_backend_modify_segment_map \
2766 elf64_hppa_modify_segment_map
2768 #define elf_backend_link_output_symbol_hook \
2769 elf64_hppa_link_output_symbol_hook
2771 #define elf_backend_want_got_plt 0
2772 #define elf_backend_plt_readonly 0
2773 #define elf_backend_want_plt_sym 0
2774 #define elf_backend_got_header_size 0
2775 #define elf_backend_plt_header_size 0
2776 #define elf_backend_type_change_ok TRUE
2777 #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type
2778 #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class
2779 #define elf_backend_rela_normal 1
2780 #define elf_backend_special_sections elf64_hppa_special_sections
2782 #include "elf64-target.h"
2784 #undef TARGET_BIG_SYM
2785 #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec
2786 #undef TARGET_BIG_NAME
2787 #define TARGET_BIG_NAME "elf64-hppa-linux"
2789 #undef elf_backend_special_sections
2791 #define INCLUDED_TARGET_FILE 1
2792 #include "elf64-target.h"