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)
721 struct elf_link_hash_entry *h = NULL;
722 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
723 struct elf64_hppa_dyn_hash_entry *dyn_h;
725 const char *addr_name;
726 bfd_boolean maybe_dynamic;
727 int dynrel_type = R_PARISC_NONE;
728 static reloc_howto_type *howto;
730 if (r_symndx >= symtab_hdr->sh_info)
732 /* We're dealing with a global symbol -- find its hash entry
733 and mark it as being referenced. */
734 long indx = r_symndx - symtab_hdr->sh_info;
735 h = elf_sym_hashes (abfd)[indx];
736 while (h->root.type == bfd_link_hash_indirect
737 || h->root.type == bfd_link_hash_warning)
738 h = (struct elf_link_hash_entry *) h->root.u.i.link;
740 h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
743 /* We can only get preliminary data on whether a symbol is
744 locally or externally defined, as not all of the input files
745 have yet been processed. Do something with what we know, as
746 this may help reduce memory usage and processing time later. */
747 maybe_dynamic = FALSE;
748 if (h && ((info->shared
749 && (!info->symbolic || info->allow_shlib_undefined) )
750 || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
751 || h->root.type == bfd_link_hash_defweak))
752 maybe_dynamic = TRUE;
754 howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info);
758 /* These are simple indirect references to symbols through the
759 DLT. We need to create a DLT entry for any symbols which
760 appears in a DLTIND relocation. */
761 case R_PARISC_DLTIND21L:
762 case R_PARISC_DLTIND14R:
763 case R_PARISC_DLTIND14F:
764 case R_PARISC_DLTIND14WR:
765 case R_PARISC_DLTIND14DR:
766 need_entry = NEED_DLT;
769 /* ?!? These need a DLT entry. But I have no idea what to do with
770 the "link time TP value. */
771 case R_PARISC_LTOFF_TP21L:
772 case R_PARISC_LTOFF_TP14R:
773 case R_PARISC_LTOFF_TP14F:
774 case R_PARISC_LTOFF_TP64:
775 case R_PARISC_LTOFF_TP14WR:
776 case R_PARISC_LTOFF_TP14DR:
777 case R_PARISC_LTOFF_TP16F:
778 case R_PARISC_LTOFF_TP16WF:
779 case R_PARISC_LTOFF_TP16DF:
780 need_entry = NEED_DLT;
783 /* These are function calls. Depending on their precise target we
784 may need to make a stub for them. The stub uses the PLT, so we
785 need to create PLT entries for these symbols too. */
786 case R_PARISC_PCREL12F:
787 case R_PARISC_PCREL17F:
788 case R_PARISC_PCREL22F:
789 case R_PARISC_PCREL32:
790 case R_PARISC_PCREL64:
791 case R_PARISC_PCREL21L:
792 case R_PARISC_PCREL17R:
793 case R_PARISC_PCREL17C:
794 case R_PARISC_PCREL14R:
795 case R_PARISC_PCREL14F:
796 case R_PARISC_PCREL22C:
797 case R_PARISC_PCREL14WR:
798 case R_PARISC_PCREL14DR:
799 case R_PARISC_PCREL16F:
800 case R_PARISC_PCREL16WF:
801 case R_PARISC_PCREL16DF:
802 need_entry = (NEED_PLT | NEED_STUB);
805 case R_PARISC_PLTOFF21L:
806 case R_PARISC_PLTOFF14R:
807 case R_PARISC_PLTOFF14F:
808 case R_PARISC_PLTOFF14WR:
809 case R_PARISC_PLTOFF14DR:
810 case R_PARISC_PLTOFF16F:
811 case R_PARISC_PLTOFF16WF:
812 case R_PARISC_PLTOFF16DF:
813 need_entry = (NEED_PLT);
817 if (info->shared || maybe_dynamic)
818 need_entry = (NEED_DYNREL);
819 dynrel_type = R_PARISC_DIR64;
822 /* This is an indirect reference through the DLT to get the address
823 of a OPD descriptor. Thus we need to make a DLT entry that points
825 case R_PARISC_LTOFF_FPTR21L:
826 case R_PARISC_LTOFF_FPTR14R:
827 case R_PARISC_LTOFF_FPTR14WR:
828 case R_PARISC_LTOFF_FPTR14DR:
829 case R_PARISC_LTOFF_FPTR32:
830 case R_PARISC_LTOFF_FPTR64:
831 case R_PARISC_LTOFF_FPTR16F:
832 case R_PARISC_LTOFF_FPTR16WF:
833 case R_PARISC_LTOFF_FPTR16DF:
834 if (info->shared || maybe_dynamic)
835 need_entry = (NEED_DLT | NEED_OPD);
837 need_entry = (NEED_DLT | NEED_OPD);
838 dynrel_type = R_PARISC_FPTR64;
841 /* This is a simple OPD entry. */
842 case R_PARISC_FPTR64:
843 if (info->shared || maybe_dynamic)
844 need_entry = (NEED_OPD | NEED_DYNREL);
846 need_entry = (NEED_OPD);
847 dynrel_type = R_PARISC_FPTR64;
850 /* Add more cases as needed. */
856 /* Collect a canonical name for this address. */
857 addr_name = get_dyn_name (sec, h, rel, &buf, &buf_len);
859 /* Collect the canonical entry data for this address. */
860 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
861 addr_name, TRUE, TRUE);
864 /* Stash away enough information to be able to find this symbol
865 regardless of whether or not it is local or global. */
868 dyn_h->sym_indx = r_symndx;
870 /* ?!? We may need to do some error checking in here. */
871 /* Create what's needed. */
872 if (need_entry & NEED_DLT)
874 if (! hppa_info->dlt_sec
875 && ! get_dlt (abfd, info, hppa_info))
880 if (need_entry & NEED_PLT)
882 if (! hppa_info->plt_sec
883 && ! get_plt (abfd, info, hppa_info))
888 if (need_entry & NEED_STUB)
890 if (! hppa_info->stub_sec
891 && ! get_stub (abfd, info, hppa_info))
893 dyn_h->want_stub = 1;
896 if (need_entry & NEED_OPD)
898 if (! hppa_info->opd_sec
899 && ! get_opd (abfd, info, hppa_info))
904 /* FPTRs are not allocated by the dynamic linker for PA64, though
905 it is possible that will change in the future. */
907 /* This could be a local function that had its address taken, in
908 which case H will be NULL. */
910 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
913 /* Add a new dynamic relocation to the chain of dynamic
914 relocations for this symbol. */
915 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
917 if (! hppa_info->other_rel_sec
918 && ! get_reloc_section (abfd, hppa_info, sec))
921 if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec,
922 sec_symndx, rel->r_offset, rel->r_addend))
925 /* If we are building a shared library and we just recorded
926 a dynamic R_PARISC_FPTR64 relocation, then make sure the
927 section symbol for this section ends up in the dynamic
929 if (info->shared && dynrel_type == R_PARISC_FPTR64
930 && ! (_bfd_elf64_link_record_local_dynamic_symbol
931 (info, abfd, sec_symndx)))
946 struct elf64_hppa_allocate_data
948 struct bfd_link_info *info;
952 /* Should we do dynamic things to this symbol? */
955 elf64_hppa_dynamic_symbol_p (h, info)
956 struct elf_link_hash_entry *h;
957 struct bfd_link_info *info;
959 /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols
960 and relocations that retrieve a function descriptor? Assume the
962 if (_bfd_elf_dynamic_symbol_p (h, info, 1))
964 /* ??? Why is this here and not elsewhere is_local_label_name. */
965 if (h->root.root.string[0] == '$' && h->root.root.string[1] == '$')
974 /* Mark all funtions exported by this file so that we can later allocate
975 entries in .opd for them. */
978 elf64_hppa_mark_exported_functions (h, data)
979 struct elf_link_hash_entry *h;
982 struct bfd_link_info *info = (struct bfd_link_info *)data;
983 struct elf64_hppa_link_hash_table *hppa_info;
985 hppa_info = elf64_hppa_hash_table (info);
987 if (h->root.type == bfd_link_hash_warning)
988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
991 && (h->root.type == bfd_link_hash_defined
992 || h->root.type == bfd_link_hash_defweak)
993 && h->root.u.def.section->output_section != NULL
994 && h->type == STT_FUNC)
996 struct elf64_hppa_dyn_hash_entry *dyn_h;
998 /* Add this symbol to the PA64 linker hash table. */
999 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1000 h->root.root.string, TRUE, TRUE);
1004 if (! hppa_info->opd_sec
1005 && ! get_opd (hppa_info->root.dynobj, info, hppa_info))
1008 dyn_h->want_opd = 1;
1009 /* Put a flag here for output_symbol_hook. */
1010 dyn_h->st_shndx = -1;
1011 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1017 /* Allocate space for a DLT entry. */
1020 allocate_global_data_dlt (dyn_h, data)
1021 struct elf64_hppa_dyn_hash_entry *dyn_h;
1024 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1026 if (dyn_h->want_dlt)
1028 struct elf_link_hash_entry *h = dyn_h->h;
1030 if (x->info->shared)
1032 /* Possibly add the symbol to the local dynamic symbol
1033 table since we might need to create a dynamic relocation
1036 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI))
1039 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1041 if (! (_bfd_elf64_link_record_local_dynamic_symbol
1042 (x->info, owner, dyn_h->sym_indx)))
1047 dyn_h->dlt_offset = x->ofs;
1048 x->ofs += DLT_ENTRY_SIZE;
1053 /* Allocate space for a DLT.PLT entry. */
1056 allocate_global_data_plt (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;
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->plt_offset = x->ofs;
1069 x->ofs += PLT_ENTRY_SIZE;
1070 if (dyn_h->plt_offset < 0x2000)
1071 elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset;
1074 dyn_h->want_plt = 0;
1079 /* Allocate space for a STUB entry. */
1082 allocate_global_data_stub (dyn_h, data)
1083 struct elf64_hppa_dyn_hash_entry *dyn_h;
1086 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1088 if (dyn_h->want_stub
1089 && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
1090 && !((dyn_h->h->root.type == bfd_link_hash_defined
1091 || dyn_h->h->root.type == bfd_link_hash_defweak)
1092 && dyn_h->h->root.u.def.section->output_section != NULL))
1094 dyn_h->stub_offset = x->ofs;
1095 x->ofs += sizeof (plt_stub);
1098 dyn_h->want_stub = 0;
1102 /* Allocate space for a FPTR entry. */
1105 allocate_global_data_opd (dyn_h, data)
1106 struct elf64_hppa_dyn_hash_entry *dyn_h;
1109 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1111 if (dyn_h->want_opd)
1113 struct elf_link_hash_entry *h = dyn_h->h;
1116 while (h->root.type == bfd_link_hash_indirect
1117 || h->root.type == bfd_link_hash_warning)
1118 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1120 /* We never need an opd entry for a symbol which is not
1121 defined by this output file. */
1122 if (h && (h->root.type == bfd_link_hash_undefined
1123 || h->root.u.def.section->output_section == NULL))
1124 dyn_h->want_opd = 0;
1126 /* If we are creating a shared library, took the address of a local
1127 function or might export this function from this object file, then
1128 we have to create an opd descriptor. */
1129 else if (x->info->shared
1131 || (h->dynindx == -1 && h->type != STT_PARISC_MILLI)
1132 || (h->root.type == bfd_link_hash_defined
1133 || h->root.type == bfd_link_hash_defweak))
1135 /* If we are creating a shared library, then we will have to
1136 create a runtime relocation for the symbol to properly
1137 initialize the .opd entry. Make sure the symbol gets
1138 added to the dynamic symbol table. */
1140 && (h == NULL || (h->dynindx == -1)))
1143 owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
1145 if (!_bfd_elf64_link_record_local_dynamic_symbol
1146 (x->info, owner, dyn_h->sym_indx))
1150 /* This may not be necessary or desirable anymore now that
1151 we have some support for dealing with section symbols
1152 in dynamic relocs. But name munging does make the result
1153 much easier to debug. ie, the EPLT reloc will reference
1154 a symbol like .foobar, instead of .text + offset. */
1155 if (x->info->shared && h)
1158 struct elf_link_hash_entry *nh;
1160 new_name = alloca (strlen (h->root.root.string) + 2);
1162 strcpy (new_name + 1, h->root.root.string);
1164 nh = elf_link_hash_lookup (elf_hash_table (x->info),
1165 new_name, TRUE, TRUE, TRUE);
1167 nh->root.type = h->root.type;
1168 nh->root.u.def.value = h->root.u.def.value;
1169 nh->root.u.def.section = h->root.u.def.section;
1171 if (! bfd_elf64_link_record_dynamic_symbol (x->info, nh))
1175 dyn_h->opd_offset = x->ofs;
1176 x->ofs += OPD_ENTRY_SIZE;
1179 /* Otherwise we do not need an opd entry. */
1181 dyn_h->want_opd = 0;
1186 /* HP requires the EI_OSABI field to be filled in. The assignment to
1187 EI_ABIVERSION may not be strictly necessary. */
1190 elf64_hppa_post_process_headers (abfd, link_info)
1192 struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
1194 Elf_Internal_Ehdr * i_ehdrp;
1196 i_ehdrp = elf_elfheader (abfd);
1198 if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0)
1200 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
1204 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
1205 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
1209 /* Create function descriptor section (.opd). This section is called .opd
1210 because it contains "official prodecure descriptors". The "official"
1211 refers to the fact that these descriptors are used when taking the address
1212 of a procedure, thus ensuring a unique address for each procedure. */
1215 get_opd (abfd, info, hppa_info)
1217 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1218 struct elf64_hppa_link_hash_table *hppa_info;
1223 opd = hppa_info->opd_sec;
1226 dynobj = hppa_info->root.dynobj;
1228 hppa_info->root.dynobj = dynobj = abfd;
1230 opd = bfd_make_section (dynobj, ".opd");
1232 || !bfd_set_section_flags (dynobj, opd,
1237 | SEC_LINKER_CREATED))
1238 || !bfd_set_section_alignment (abfd, opd, 3))
1244 hppa_info->opd_sec = opd;
1250 /* Create the PLT section. */
1253 get_plt (abfd, info, hppa_info)
1255 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1256 struct elf64_hppa_link_hash_table *hppa_info;
1261 plt = hppa_info->plt_sec;
1264 dynobj = hppa_info->root.dynobj;
1266 hppa_info->root.dynobj = dynobj = abfd;
1268 plt = bfd_make_section (dynobj, ".plt");
1270 || !bfd_set_section_flags (dynobj, plt,
1275 | SEC_LINKER_CREATED))
1276 || !bfd_set_section_alignment (abfd, plt, 3))
1282 hppa_info->plt_sec = plt;
1288 /* Create the DLT section. */
1291 get_dlt (abfd, info, hppa_info)
1293 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1294 struct elf64_hppa_link_hash_table *hppa_info;
1299 dlt = hppa_info->dlt_sec;
1302 dynobj = hppa_info->root.dynobj;
1304 hppa_info->root.dynobj = dynobj = abfd;
1306 dlt = bfd_make_section (dynobj, ".dlt");
1308 || !bfd_set_section_flags (dynobj, dlt,
1313 | SEC_LINKER_CREATED))
1314 || !bfd_set_section_alignment (abfd, dlt, 3))
1320 hppa_info->dlt_sec = dlt;
1326 /* Create the stubs section. */
1329 get_stub (abfd, info, hppa_info)
1331 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1332 struct elf64_hppa_link_hash_table *hppa_info;
1337 stub = hppa_info->stub_sec;
1340 dynobj = hppa_info->root.dynobj;
1342 hppa_info->root.dynobj = dynobj = abfd;
1344 stub = bfd_make_section (dynobj, ".stub");
1346 || !bfd_set_section_flags (dynobj, stub,
1352 | SEC_LINKER_CREATED))
1353 || !bfd_set_section_alignment (abfd, stub, 3))
1359 hppa_info->stub_sec = stub;
1365 /* Create sections necessary for dynamic linking. This is only a rough
1366 cut and will likely change as we learn more about the somewhat
1367 unusual dynamic linking scheme HP uses.
1370 Contains code to implement cross-space calls. The first time one
1371 of the stubs is used it will call into the dynamic linker, later
1372 calls will go straight to the target.
1374 The only stub we support right now looks like
1378 ldd OFFSET+8(%dp),%dp
1380 Other stubs may be needed in the future. We may want the remove
1381 the break/nop instruction. It is only used right now to keep the
1382 offset of a .plt entry and a .stub entry in sync.
1385 This is what most people call the .got. HP used a different name.
1389 Relocations for the DLT.
1392 Function pointers as address,gp pairs.
1395 Should contain dynamic IPLT (and EPLT?) relocations.
1401 EPLT relocations for symbols exported from shared libraries. */
1404 elf64_hppa_create_dynamic_sections (abfd, info)
1406 struct bfd_link_info *info;
1410 if (! get_stub (abfd, info, elf64_hppa_hash_table (info)))
1413 if (! get_dlt (abfd, info, elf64_hppa_hash_table (info)))
1416 if (! get_plt (abfd, info, elf64_hppa_hash_table (info)))
1419 if (! get_opd (abfd, info, elf64_hppa_hash_table (info)))
1422 s = bfd_make_section(abfd, ".rela.dlt");
1424 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1428 | SEC_LINKER_CREATED))
1429 || !bfd_set_section_alignment (abfd, s, 3))
1431 elf64_hppa_hash_table (info)->dlt_rel_sec = s;
1433 s = bfd_make_section(abfd, ".rela.plt");
1435 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1439 | SEC_LINKER_CREATED))
1440 || !bfd_set_section_alignment (abfd, s, 3))
1442 elf64_hppa_hash_table (info)->plt_rel_sec = s;
1444 s = bfd_make_section(abfd, ".rela.data");
1446 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1450 | SEC_LINKER_CREATED))
1451 || !bfd_set_section_alignment (abfd, s, 3))
1453 elf64_hppa_hash_table (info)->other_rel_sec = s;
1455 s = bfd_make_section(abfd, ".rela.opd");
1457 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1461 | SEC_LINKER_CREATED))
1462 || !bfd_set_section_alignment (abfd, s, 3))
1464 elf64_hppa_hash_table (info)->opd_rel_sec = s;
1469 /* Allocate dynamic relocations for those symbols that turned out
1473 allocate_dynrel_entries (dyn_h, data)
1474 struct elf64_hppa_dyn_hash_entry *dyn_h;
1477 struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
1478 struct elf64_hppa_link_hash_table *hppa_info;
1479 struct elf64_hppa_dyn_reloc_entry *rent;
1480 bfd_boolean dynamic_symbol, shared;
1482 hppa_info = elf64_hppa_hash_table (x->info);
1483 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info);
1484 shared = x->info->shared;
1486 /* We may need to allocate relocations for a non-dynamic symbol
1487 when creating a shared library. */
1488 if (!dynamic_symbol && !shared)
1491 /* Take care of the normal data relocations. */
1493 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
1495 /* Allocate one iff we are building a shared library, the relocation
1496 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
1497 if (!shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
1500 hppa_info->other_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1502 /* Make sure this symbol gets into the dynamic symbol table if it is
1503 not already recorded. ?!? This should not be in the loop since
1504 the symbol need only be added once. */
1506 || (dyn_h->h->dynindx == -1 && dyn_h->h->type != STT_PARISC_MILLI))
1507 if (!_bfd_elf64_link_record_local_dynamic_symbol
1508 (x->info, rent->sec->owner, dyn_h->sym_indx))
1512 /* Take care of the GOT and PLT relocations. */
1514 if ((dynamic_symbol || shared) && dyn_h->want_dlt)
1515 hppa_info->dlt_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1517 /* If we are building a shared library, then every symbol that has an
1518 opd entry will need an EPLT relocation to relocate the symbol's address
1519 and __gp value based on the runtime load address. */
1520 if (shared && dyn_h->want_opd)
1521 hppa_info->opd_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
1523 if (dyn_h->want_plt && dynamic_symbol)
1525 bfd_size_type t = 0;
1527 /* Dynamic symbols get one IPLT relocation. Local symbols in
1528 shared libraries get two REL relocations. Local symbols in
1529 main applications get nothing. */
1531 t = sizeof (Elf64_External_Rela);
1533 t = 2 * sizeof (Elf64_External_Rela);
1535 hppa_info->plt_rel_sec->_raw_size += t;
1541 /* Adjust a symbol defined by a dynamic object and referenced by a
1545 elf64_hppa_adjust_dynamic_symbol (info, h)
1546 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1547 struct elf_link_hash_entry *h;
1549 /* ??? Undefined symbols with PLT entries should be re-defined
1550 to be the PLT entry. */
1552 /* If this is a weak symbol, and there is a real definition, the
1553 processor independent code will have arranged for us to see the
1554 real definition first, and we can just use the same value. */
1555 if (h->weakdef != NULL)
1557 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1558 || h->weakdef->root.type == bfd_link_hash_defweak);
1559 h->root.u.def.section = h->weakdef->root.u.def.section;
1560 h->root.u.def.value = h->weakdef->root.u.def.value;
1564 /* If this is a reference to a symbol defined by a dynamic object which
1565 is not a function, we might allocate the symbol in our .dynbss section
1566 and allocate a COPY dynamic relocation.
1568 But PA64 code is canonically PIC, so as a rule we can avoid this sort
1574 /* This function is called via elf_link_hash_traverse to mark millicode
1575 symbols with a dynindx of -1 and to remove the string table reference
1576 from the dynamic symbol table. If the symbol is not a millicode symbol,
1577 elf64_hppa_mark_exported_functions is called. */
1580 elf64_hppa_mark_milli_and_exported_functions (h, data)
1581 struct elf_link_hash_entry *h;
1584 struct bfd_link_info *info = (struct bfd_link_info *)data;
1585 struct elf_link_hash_entry *elf = h;
1587 if (elf->root.type == bfd_link_hash_warning)
1588 elf = (struct elf_link_hash_entry *) elf->root.u.i.link;
1590 if (elf->type == STT_PARISC_MILLI)
1592 if (elf->dynindx != -1)
1595 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1601 return elf64_hppa_mark_exported_functions (h, data);
1604 /* Set the final sizes of the dynamic sections and allocate memory for
1605 the contents of our special sections. */
1608 elf64_hppa_size_dynamic_sections (output_bfd, info)
1610 struct bfd_link_info *info;
1616 bfd_boolean reltext;
1617 struct elf64_hppa_allocate_data data;
1618 struct elf64_hppa_link_hash_table *hppa_info;
1620 hppa_info = elf64_hppa_hash_table (info);
1622 dynobj = elf_hash_table (info)->dynobj;
1623 BFD_ASSERT (dynobj != NULL);
1625 /* Mark each function this program exports so that we will allocate
1626 space in the .opd section for each function's FPTR. If we are
1627 creating dynamic sections, change the dynamic index of millicode
1628 symbols to -1 and remove them from the string table for .dynstr.
1630 We have to traverse the main linker hash table since we have to
1631 find functions which may not have been mentioned in any relocs. */
1632 elf_link_hash_traverse (elf_hash_table (info),
1633 (elf_hash_table (info)->dynamic_sections_created
1634 ? elf64_hppa_mark_milli_and_exported_functions
1635 : elf64_hppa_mark_exported_functions),
1638 if (elf_hash_table (info)->dynamic_sections_created)
1640 /* Set the contents of the .interp section to the interpreter. */
1643 s = bfd_get_section_by_name (dynobj, ".interp");
1644 BFD_ASSERT (s != NULL);
1645 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1646 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1651 /* We may have created entries in the .rela.got section.
1652 However, if we are not creating the dynamic sections, we will
1653 not actually use these entries. Reset the size of .rela.dlt,
1654 which will cause it to get stripped from the output file
1656 s = bfd_get_section_by_name (dynobj, ".rela.dlt");
1661 /* Allocate the GOT entries. */
1664 if (elf64_hppa_hash_table (info)->dlt_sec)
1667 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1668 allocate_global_data_dlt, &data);
1669 hppa_info->dlt_sec->_raw_size = data.ofs;
1672 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1673 allocate_global_data_plt, &data);
1674 hppa_info->plt_sec->_raw_size = data.ofs;
1677 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1678 allocate_global_data_stub, &data);
1679 hppa_info->stub_sec->_raw_size = data.ofs;
1682 /* Allocate space for entries in the .opd section. */
1683 if (elf64_hppa_hash_table (info)->opd_sec)
1686 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1687 allocate_global_data_opd, &data);
1688 hppa_info->opd_sec->_raw_size = data.ofs;
1691 /* Now allocate space for dynamic relocations, if necessary. */
1692 if (hppa_info->root.dynamic_sections_created)
1693 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
1694 allocate_dynrel_entries, &data);
1696 /* The sizes of all the sections are set. Allocate memory for them. */
1700 for (s = dynobj->sections; s != NULL; s = s->next)
1705 if ((s->flags & SEC_LINKER_CREATED) == 0)
1708 /* It's OK to base decisions on the section name, because none
1709 of the dynobj section names depend upon the input files. */
1710 name = bfd_get_section_name (dynobj, s);
1714 if (strcmp (name, ".plt") == 0)
1716 /* Strip this section if we don't need it; see the comment below. */
1717 if (s->_raw_size == 0)
1723 /* Remember whether there is a PLT. */
1727 else if (strcmp (name, ".dlt") == 0)
1729 /* Strip this section if we don't need it; see the comment below. */
1730 if (s->_raw_size == 0)
1735 else if (strcmp (name, ".opd") == 0)
1737 /* Strip this section if we don't need it; see the comment below. */
1738 if (s->_raw_size == 0)
1743 else if (strncmp (name, ".rela", 5) == 0)
1745 /* If we don't need this section, strip it from the output file.
1746 This is mostly to handle .rela.bss and .rela.plt. We must
1747 create both sections in create_dynamic_sections, because they
1748 must be created before the linker maps input sections to output
1749 sections. The linker does that before adjust_dynamic_symbol
1750 is called, and it is that function which decides whether
1751 anything needs to go into these sections. */
1752 if (s->_raw_size == 0)
1754 /* If we don't need this section, strip it from the
1755 output file. This is mostly to handle .rela.bss and
1756 .rela.plt. We must create both sections in
1757 create_dynamic_sections, because they must be created
1758 before the linker maps input sections to output
1759 sections. The linker does that before
1760 adjust_dynamic_symbol is called, and it is that
1761 function which decides whether anything needs to go
1762 into these sections. */
1769 /* Remember whether there are any reloc sections other
1771 if (strcmp (name, ".rela.plt") != 0)
1773 const char *outname;
1777 /* If this relocation section applies to a read only
1778 section, then we probably need a DT_TEXTREL
1779 entry. The entries in the .rela.plt section
1780 really apply to the .got section, which we
1781 created ourselves and so know is not readonly. */
1782 outname = bfd_get_section_name (output_bfd,
1784 target = bfd_get_section_by_name (output_bfd, outname + 4);
1786 && (target->flags & SEC_READONLY) != 0
1787 && (target->flags & SEC_ALLOC) != 0)
1791 /* We use the reloc_count field as a counter if we need
1792 to copy relocs into the output file. */
1796 else if (strncmp (name, ".dlt", 4) != 0
1797 && strcmp (name, ".stub") != 0
1798 && strcmp (name, ".got") != 0)
1800 /* It's not one of our sections, so don't allocate space. */
1806 _bfd_strip_section_from_output (info, s);
1810 /* Allocate memory for the section contents if it has not
1811 been allocated already. We use bfd_zalloc here in case
1812 unused entries are not reclaimed before the section's
1813 contents are written out. This should not happen, but this
1814 way if it does, we get a R_PARISC_NONE reloc instead of
1816 if (s->contents == NULL)
1818 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1819 if (s->contents == NULL && s->_raw_size != 0)
1824 if (elf_hash_table (info)->dynamic_sections_created)
1826 /* Always create a DT_PLTGOT. It actually has nothing to do with
1827 the PLT, it is how we communicate the __gp value of a load
1828 module to the dynamic linker. */
1829 #define add_dynamic_entry(TAG, VAL) \
1830 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1832 if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0)
1833 || !add_dynamic_entry (DT_PLTGOT, 0))
1836 /* Add some entries to the .dynamic section. We fill in the
1837 values later, in elf64_hppa_finish_dynamic_sections, but we
1838 must add the entries now so that we get the correct size for
1839 the .dynamic section. The DT_DEBUG entry is filled in by the
1840 dynamic linker and used by the debugger. */
1843 if (!add_dynamic_entry (DT_DEBUG, 0)
1844 || !add_dynamic_entry (DT_HP_DLD_HOOK, 0)
1845 || !add_dynamic_entry (DT_HP_LOAD_MAP, 0))
1849 /* Force DT_FLAGS to always be set.
1850 Required by HPUX 11.00 patch PHSS_26559. */
1851 if (!add_dynamic_entry (DT_FLAGS, (info)->flags))
1856 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
1857 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1858 || !add_dynamic_entry (DT_JMPREL, 0))
1864 if (!add_dynamic_entry (DT_RELA, 0)
1865 || !add_dynamic_entry (DT_RELASZ, 0)
1866 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
1872 if (!add_dynamic_entry (DT_TEXTREL, 0))
1874 info->flags |= DF_TEXTREL;
1877 #undef add_dynamic_entry
1882 /* Called after we have output the symbol into the dynamic symbol
1883 table, but before we output the symbol into the normal symbol
1886 For some symbols we had to change their address when outputting
1887 the dynamic symbol table. We undo that change here so that
1888 the symbols have their expected value in the normal symbol
1892 elf64_hppa_link_output_symbol_hook (abfd, info, name, sym, input_sec)
1893 bfd *abfd ATTRIBUTE_UNUSED;
1894 struct bfd_link_info *info;
1896 Elf_Internal_Sym *sym;
1897 asection *input_sec ATTRIBUTE_UNUSED;
1899 struct elf64_hppa_link_hash_table *hppa_info;
1900 struct elf64_hppa_dyn_hash_entry *dyn_h;
1902 /* We may be called with the file symbol or section symbols.
1903 They never need munging, so it is safe to ignore them. */
1907 /* Get the PA dyn_symbol (if any) associated with NAME. */
1908 hppa_info = elf64_hppa_hash_table (info);
1909 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1910 name, FALSE, FALSE);
1912 /* Function symbols for which we created .opd entries *may* have been
1913 munged by finish_dynamic_symbol and have to be un-munged here.
1915 Note that finish_dynamic_symbol sometimes turns dynamic symbols
1916 into non-dynamic ones, so we initialize st_shndx to -1 in
1917 mark_exported_functions and check to see if it was overwritten
1918 here instead of just checking dyn_h->h->dynindx. */
1919 if (dyn_h && dyn_h->want_opd && dyn_h->st_shndx != -1)
1921 /* Restore the saved value and section index. */
1922 sym->st_value = dyn_h->st_value;
1923 sym->st_shndx = dyn_h->st_shndx;
1929 /* Finish up dynamic symbol handling. We set the contents of various
1930 dynamic sections here. */
1933 elf64_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
1935 struct bfd_link_info *info;
1936 struct elf_link_hash_entry *h;
1937 Elf_Internal_Sym *sym;
1939 asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel;
1940 struct elf64_hppa_link_hash_table *hppa_info;
1941 struct elf64_hppa_dyn_hash_entry *dyn_h;
1943 hppa_info = elf64_hppa_hash_table (info);
1944 dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
1945 h->root.root.string, FALSE, FALSE);
1947 stub = hppa_info->stub_sec;
1948 splt = hppa_info->plt_sec;
1949 sdlt = hppa_info->dlt_sec;
1950 sopd = hppa_info->opd_sec;
1951 spltrel = hppa_info->plt_rel_sec;
1952 sdltrel = hppa_info->dlt_rel_sec;
1954 /* Incredible. It is actually necessary to NOT use the symbol's real
1955 value when building the dynamic symbol table for a shared library.
1956 At least for symbols that refer to functions.
1958 We will store a new value and section index into the symbol long
1959 enough to output it into the dynamic symbol table, then we restore
1960 the original values (in elf64_hppa_link_output_symbol_hook). */
1961 if (dyn_h && dyn_h->want_opd)
1963 BFD_ASSERT (sopd != NULL)
1965 /* Save away the original value and section index so that we
1966 can restore them later. */
1967 dyn_h->st_value = sym->st_value;
1968 dyn_h->st_shndx = sym->st_shndx;
1970 /* For the dynamic symbol table entry, we want the value to be
1971 address of this symbol's entry within the .opd section. */
1972 sym->st_value = (dyn_h->opd_offset
1973 + sopd->output_offset
1974 + sopd->output_section->vma);
1975 sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
1976 sopd->output_section);
1979 /* Initialize a .plt entry if requested. */
1980 if (dyn_h && dyn_h->want_plt
1981 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
1984 Elf_Internal_Rela rel;
1987 BFD_ASSERT (splt != NULL && spltrel != NULL)
1989 /* We do not actually care about the value in the PLT entry
1990 if we are creating a shared library and the symbol is
1991 still undefined, we create a dynamic relocation to fill
1992 in the correct value. */
1993 if (info->shared && h->root.type == bfd_link_hash_undefined)
1996 value = (h->root.u.def.value + h->root.u.def.section->vma);
1998 /* Fill in the entry in the procedure linkage table.
2000 The format of a plt entry is
2003 plt_offset is the offset within the PLT section at which to
2004 install the PLT entry.
2006 We are modifying the in-memory PLT contents here, so we do not add
2007 in the output_offset of the PLT section. */
2009 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset);
2010 value = _bfd_get_gp_value (splt->output_section->owner);
2011 bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8);
2013 /* Create a dynamic IPLT relocation for this entry.
2015 We are creating a relocation in the output file's PLT section,
2016 which is included within the DLT secton. So we do need to include
2017 the PLT's output_offset in the computation of the relocation's
2019 rel.r_offset = (dyn_h->plt_offset + splt->output_offset
2020 + splt->output_section->vma);
2021 rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT);
2024 loc = spltrel->contents;
2025 loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela);
2026 bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc);
2029 /* Initialize an external call stub entry if requested. */
2030 if (dyn_h && dyn_h->want_stub
2031 && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
2035 unsigned int max_offset;
2037 BFD_ASSERT (stub != NULL)
2039 /* Install the generic stub template.
2041 We are modifying the contents of the stub section, so we do not
2042 need to include the stub section's output_offset here. */
2043 memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub));
2045 /* Fix up the first ldd instruction.
2047 We are modifying the contents of the STUB section in memory,
2048 so we do not need to include its output offset in this computation.
2050 Note the plt_offset value is the value of the PLT entry relative to
2051 the start of the PLT section. These instructions will reference
2052 data relative to the value of __gp, which may not necessarily have
2053 the same address as the start of the PLT section.
2055 gp_offset contains the offset of __gp within the PLT section. */
2056 value = dyn_h->plt_offset - hppa_info->gp_offset;
2058 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset);
2059 if (output_bfd->arch_info->mach >= 25)
2061 /* Wide mode allows 16 bit offsets. */
2064 insn |= re_assemble_16 ((int) value);
2070 insn |= re_assemble_14 ((int) value);
2073 if ((value & 7) || value + max_offset >= 2*max_offset - 8)
2075 (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"),
2081 bfd_put_32 (stub->owner, (bfd_vma) insn,
2082 stub->contents + dyn_h->stub_offset);
2084 /* Fix up the second ldd instruction. */
2086 insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8);
2087 if (output_bfd->arch_info->mach >= 25)
2090 insn |= re_assemble_16 ((int) value);
2095 insn |= re_assemble_14 ((int) value);
2097 bfd_put_32 (stub->owner, (bfd_vma) insn,
2098 stub->contents + dyn_h->stub_offset + 8);
2104 /* The .opd section contains FPTRs for each function this file
2105 exports. Initialize the FPTR entries. */
2108 elf64_hppa_finalize_opd (dyn_h, data)
2109 struct elf64_hppa_dyn_hash_entry *dyn_h;
2112 struct bfd_link_info *info = (struct bfd_link_info *)data;
2113 struct elf64_hppa_link_hash_table *hppa_info;
2114 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
2118 hppa_info = elf64_hppa_hash_table (info);
2119 sopd = hppa_info->opd_sec;
2120 sopdrel = hppa_info->opd_rel_sec;
2122 if (h && dyn_h->want_opd)
2126 /* The first two words of an .opd entry are zero.
2128 We are modifying the contents of the OPD section in memory, so we
2129 do not need to include its output offset in this computation. */
2130 memset (sopd->contents + dyn_h->opd_offset, 0, 16);
2132 value = (h->root.u.def.value
2133 + h->root.u.def.section->output_section->vma
2134 + h->root.u.def.section->output_offset);
2136 /* The next word is the address of the function. */
2137 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16);
2139 /* The last word is our local __gp value. */
2140 value = _bfd_get_gp_value (sopd->output_section->owner);
2141 bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24);
2144 /* If we are generating a shared library, we must generate EPLT relocations
2145 for each entry in the .opd, even for static functions (they may have
2146 had their address taken). */
2147 if (info->shared && dyn_h && dyn_h->want_opd)
2149 Elf_Internal_Rela rel;
2153 /* We may need to do a relocation against a local symbol, in
2154 which case we have to look up it's dynamic symbol index off
2155 the local symbol hash table. */
2156 if (h && h->dynindx != -1)
2157 dynindx = h->dynindx;
2160 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2163 /* The offset of this relocation is the absolute address of the
2164 .opd entry for this symbol. */
2165 rel.r_offset = (dyn_h->opd_offset + sopd->output_offset
2166 + sopd->output_section->vma);
2168 /* If H is non-null, then we have an external symbol.
2170 It is imperative that we use a different dynamic symbol for the
2171 EPLT relocation if the symbol has global scope.
2173 In the dynamic symbol table, the function symbol will have a value
2174 which is address of the function's .opd entry.
2176 Thus, we can not use that dynamic symbol for the EPLT relocation
2177 (if we did, the data in the .opd would reference itself rather
2178 than the actual address of the function). Instead we have to use
2179 a new dynamic symbol which has the same value as the original global
2182 We prefix the original symbol with a "." and use the new symbol in
2183 the EPLT relocation. This new symbol has already been recorded in
2184 the symbol table, we just have to look it up and use it.
2186 We do not have such problems with static functions because we do
2187 not make their addresses in the dynamic symbol table point to
2188 the .opd entry. Ultimately this should be safe since a static
2189 function can not be directly referenced outside of its shared
2192 We do have to play similar games for FPTR relocations in shared
2193 libraries, including those for static symbols. See the FPTR
2194 handling in elf64_hppa_finalize_dynreloc. */
2198 struct elf_link_hash_entry *nh;
2200 new_name = alloca (strlen (h->root.root.string) + 2);
2202 strcpy (new_name + 1, h->root.root.string);
2204 nh = elf_link_hash_lookup (elf_hash_table (info),
2205 new_name, FALSE, FALSE, FALSE);
2207 /* All we really want from the new symbol is its dynamic
2209 dynindx = nh->dynindx;
2213 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT);
2215 loc = sopdrel->contents;
2216 loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela);
2217 bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc);
2222 /* The .dlt section contains addresses for items referenced through the
2223 dlt. Note that we can have a DLTIND relocation for a local symbol, thus
2224 we can not depend on finish_dynamic_symbol to initialize the .dlt. */
2227 elf64_hppa_finalize_dlt (dyn_h, data)
2228 struct elf64_hppa_dyn_hash_entry *dyn_h;
2231 struct bfd_link_info *info = (struct bfd_link_info *)data;
2232 struct elf64_hppa_link_hash_table *hppa_info;
2233 asection *sdlt, *sdltrel;
2234 struct elf_link_hash_entry *h = dyn_h ? dyn_h->h : NULL;
2236 hppa_info = elf64_hppa_hash_table (info);
2238 sdlt = hppa_info->dlt_sec;
2239 sdltrel = hppa_info->dlt_rel_sec;
2241 /* H/DYN_H may refer to a local variable and we know it's
2242 address, so there is no need to create a relocation. Just install
2243 the proper value into the DLT, note this shortcut can not be
2244 skipped when building a shared library. */
2245 if (! info->shared && h && dyn_h->want_dlt)
2249 /* If we had an LTOFF_FPTR style relocation we want the DLT entry
2250 to point to the FPTR entry in the .opd section.
2252 We include the OPD's output offset in this computation as
2253 we are referring to an absolute address in the resulting
2255 if (dyn_h->want_opd)
2257 value = (dyn_h->opd_offset
2258 + hppa_info->opd_sec->output_offset
2259 + hppa_info->opd_sec->output_section->vma);
2261 else if (h->root.u.def.section)
2263 value = h->root.u.def.value + h->root.u.def.section->output_offset;
2264 if (h->root.u.def.section->output_section)
2265 value += h->root.u.def.section->output_section->vma;
2267 value += h->root.u.def.section->vma;
2270 /* We have an undefined function reference. */
2273 /* We do not need to include the output offset of the DLT section
2274 here because we are modifying the in-memory contents. */
2275 bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset);
2278 /* Create a relocation for the DLT entry assocated with this symbol.
2279 When building a shared library the symbol does not have to be dynamic. */
2281 && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared))
2283 Elf_Internal_Rela rel;
2287 /* We may need to do a relocation against a local symbol, in
2288 which case we have to look up it's dynamic symbol index off
2289 the local symbol hash table. */
2290 if (h && h->dynindx != -1)
2291 dynindx = h->dynindx;
2294 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2297 /* Create a dynamic relocation for this entry. Do include the output
2298 offset of the DLT entry since we need an absolute address in the
2299 resulting object file. */
2300 rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset
2301 + sdlt->output_section->vma);
2302 if (h && h->type == STT_FUNC)
2303 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64);
2305 rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64);
2308 loc = sdltrel->contents;
2309 loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela);
2310 bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc);
2315 /* Finalize the dynamic relocations. Specifically the FPTR relocations
2316 for dynamic functions used to initialize static data. */
2319 elf64_hppa_finalize_dynreloc (dyn_h, data)
2320 struct elf64_hppa_dyn_hash_entry *dyn_h;
2323 struct bfd_link_info *info = (struct bfd_link_info *)data;
2324 struct elf64_hppa_link_hash_table *hppa_info;
2325 struct elf_link_hash_entry *h;
2328 dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info);
2330 if (!dynamic_symbol && !info->shared)
2333 if (dyn_h->reloc_entries)
2335 struct elf64_hppa_dyn_reloc_entry *rent;
2338 hppa_info = elf64_hppa_hash_table (info);
2341 /* We may need to do a relocation against a local symbol, in
2342 which case we have to look up it's dynamic symbol index off
2343 the local symbol hash table. */
2344 if (h && h->dynindx != -1)
2345 dynindx = h->dynindx;
2348 = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
2351 for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
2353 Elf_Internal_Rela rel;
2356 /* Allocate one iff we are building a shared library, the relocation
2357 isn't a R_PARISC_FPTR64, or we don't want an opd entry. */
2358 if (!info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
2361 /* Create a dynamic relocation for this entry.
2363 We need the output offset for the reloc's section because
2364 we are creating an absolute address in the resulting object
2366 rel.r_offset = (rent->offset + rent->sec->output_offset
2367 + rent->sec->output_section->vma);
2369 /* An FPTR64 relocation implies that we took the address of
2370 a function and that the function has an entry in the .opd
2371 section. We want the FPTR64 relocation to reference the
2374 We could munge the symbol value in the dynamic symbol table
2375 (in fact we already do for functions with global scope) to point
2376 to the .opd entry. Then we could use that dynamic symbol in
2379 Or we could do something sensible, not munge the symbol's
2380 address and instead just use a different symbol to reference
2381 the .opd entry. At least that seems sensible until you
2382 realize there's no local dynamic symbols we can use for that
2383 purpose. Thus the hair in the check_relocs routine.
2385 We use a section symbol recorded by check_relocs as the
2386 base symbol for the relocation. The addend is the difference
2387 between the section symbol and the address of the .opd entry. */
2388 if (info->shared && rent->type == R_PARISC_FPTR64 && dyn_h->want_opd)
2390 bfd_vma value, value2;
2392 /* First compute the address of the opd entry for this symbol. */
2393 value = (dyn_h->opd_offset
2394 + hppa_info->opd_sec->output_section->vma
2395 + hppa_info->opd_sec->output_offset);
2397 /* Compute the value of the start of the section with
2399 value2 = (rent->sec->output_section->vma
2400 + rent->sec->output_offset);
2402 /* Compute the difference between the start of the section
2403 with the relocation and the opd entry. */
2406 /* The result becomes the addend of the relocation. */
2407 rel.r_addend = value;
2409 /* The section symbol becomes the symbol for the dynamic
2412 = _bfd_elf_link_lookup_local_dynindx (info,
2417 rel.r_addend = rent->addend;
2419 rel.r_info = ELF64_R_INFO (dynindx, rent->type);
2421 loc = hppa_info->other_rel_sec->contents;
2422 loc += (hppa_info->other_rel_sec->reloc_count++
2423 * sizeof (Elf64_External_Rela));
2424 bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner,
2432 /* Used to decide how to sort relocs in an optimal manner for the
2433 dynamic linker, before writing them out. */
2435 static enum elf_reloc_type_class
2436 elf64_hppa_reloc_type_class (rela)
2437 const Elf_Internal_Rela *rela;
2439 if (ELF64_R_SYM (rela->r_info) == 0)
2440 return reloc_class_relative;
2442 switch ((int) ELF64_R_TYPE (rela->r_info))
2445 return reloc_class_plt;
2447 return reloc_class_copy;
2449 return reloc_class_normal;
2453 /* Finish up the dynamic sections. */
2456 elf64_hppa_finish_dynamic_sections (output_bfd, info)
2458 struct bfd_link_info *info;
2462 struct elf64_hppa_link_hash_table *hppa_info;
2464 hppa_info = elf64_hppa_hash_table (info);
2466 /* Finalize the contents of the .opd section. */
2467 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2468 elf64_hppa_finalize_opd,
2471 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2472 elf64_hppa_finalize_dynreloc,
2475 /* Finalize the contents of the .dlt section. */
2476 dynobj = elf_hash_table (info)->dynobj;
2477 /* Finalize the contents of the .dlt section. */
2478 elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
2479 elf64_hppa_finalize_dlt,
2482 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2484 if (elf_hash_table (info)->dynamic_sections_created)
2486 Elf64_External_Dyn *dyncon, *dynconend;
2488 BFD_ASSERT (sdyn != NULL);
2490 dyncon = (Elf64_External_Dyn *) sdyn->contents;
2491 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2492 for (; dyncon < dynconend; dyncon++)
2494 Elf_Internal_Dyn dyn;
2497 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
2504 case DT_HP_LOAD_MAP:
2505 /* Compute the absolute address of 16byte scratchpad area
2506 for the dynamic linker.
2508 By convention the linker script will allocate the scratchpad
2509 area at the start of the .data section. So all we have to
2510 to is find the start of the .data section. */
2511 s = bfd_get_section_by_name (output_bfd, ".data");
2512 dyn.d_un.d_ptr = s->vma;
2513 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2517 /* HP's use PLTGOT to set the GOT register. */
2518 dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd);
2519 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2523 s = hppa_info->plt_rel_sec;
2524 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2525 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2529 s = hppa_info->plt_rel_sec;
2530 dyn.d_un.d_val = s->_raw_size;
2531 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2535 s = hppa_info->other_rel_sec;
2536 if (! s || ! s->_raw_size)
2537 s = hppa_info->dlt_rel_sec;
2538 if (! s || ! s->_raw_size)
2539 s = hppa_info->opd_rel_sec;
2540 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
2541 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2545 s = hppa_info->other_rel_sec;
2546 dyn.d_un.d_val = s->_raw_size;
2547 s = hppa_info->dlt_rel_sec;
2548 dyn.d_un.d_val += s->_raw_size;
2549 s = hppa_info->opd_rel_sec;
2550 dyn.d_un.d_val += s->_raw_size;
2551 /* There is some question about whether or not the size of
2552 the PLT relocs should be included here. HP's tools do
2553 it, so we'll emulate them. */
2554 s = hppa_info->plt_rel_sec;
2555 dyn.d_un.d_val += s->_raw_size;
2556 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2566 /* Return the number of additional phdrs we will need.
2568 The generic ELF code only creates PT_PHDRs for executables. The HP
2569 dynamic linker requires PT_PHDRs for dynamic libraries too.
2571 This routine indicates that the backend needs one additional program
2572 header for that case.
2574 Note we do not have access to the link info structure here, so we have
2575 to guess whether or not we are building a shared library based on the
2576 existence of a .interp section. */
2579 elf64_hppa_additional_program_headers (abfd)
2584 /* If we are creating a shared library, then we have to create a
2585 PT_PHDR segment. HP's dynamic linker chokes without it. */
2586 s = bfd_get_section_by_name (abfd, ".interp");
2592 /* Allocate and initialize any program headers required by this
2595 The generic ELF code only creates PT_PHDRs for executables. The HP
2596 dynamic linker requires PT_PHDRs for dynamic libraries too.
2598 This allocates the PT_PHDR and initializes it in a manner suitable
2601 Note we do not have access to the link info structure here, so we have
2602 to guess whether or not we are building a shared library based on the
2603 existence of a .interp section. */
2606 elf64_hppa_modify_segment_map (abfd)
2609 struct elf_segment_map *m;
2612 s = bfd_get_section_by_name (abfd, ".interp");
2615 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2616 if (m->p_type == PT_PHDR)
2620 m = ((struct elf_segment_map *)
2621 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
2625 m->p_type = PT_PHDR;
2626 m->p_flags = PF_R | PF_X;
2627 m->p_flags_valid = 1;
2628 m->p_paddr_valid = 1;
2629 m->includes_phdrs = 1;
2631 m->next = elf_tdata (abfd)->segment_map;
2632 elf_tdata (abfd)->segment_map = m;
2636 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2637 if (m->p_type == PT_LOAD)
2641 for (i = 0; i < m->count; i++)
2643 /* The code "hint" is not really a hint. It is a requirement
2644 for certain versions of the HP dynamic linker. Worse yet,
2645 it must be set even if the shared library does not have
2646 any code in its "text" segment (thus the check for .hash
2647 to catch this situation). */
2648 if (m->sections[i]->flags & SEC_CODE
2649 || (strcmp (m->sections[i]->name, ".hash") == 0))
2650 m->p_flags |= (PF_X | PF_HP_CODE);
2657 /* Called when writing out an object file to decide the type of a
2660 elf64_hppa_elf_get_symbol_type (elf_sym, type)
2661 Elf_Internal_Sym *elf_sym;
2664 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
2665 return STT_PARISC_MILLI;
2670 static struct bfd_elf_special_section const elf64_hppa_special_sections[]=
2672 { ".fini", 0, NULL, 0,
2673 SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2674 { ".init", 0, NULL, 0,
2675 SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2680 /* The hash bucket size is the standard one, namely 4. */
2682 const struct elf_size_info hppa64_elf_size_info =
2684 sizeof (Elf64_External_Ehdr),
2685 sizeof (Elf64_External_Phdr),
2686 sizeof (Elf64_External_Shdr),
2687 sizeof (Elf64_External_Rel),
2688 sizeof (Elf64_External_Rela),
2689 sizeof (Elf64_External_Sym),
2690 sizeof (Elf64_External_Dyn),
2691 sizeof (Elf_External_Note),
2695 ELFCLASS64, EV_CURRENT,
2696 bfd_elf64_write_out_phdrs,
2697 bfd_elf64_write_shdrs_and_ehdr,
2698 bfd_elf64_write_relocs,
2699 bfd_elf64_swap_symbol_in,
2700 bfd_elf64_swap_symbol_out,
2701 bfd_elf64_slurp_reloc_table,
2702 bfd_elf64_slurp_symbol_table,
2703 bfd_elf64_swap_dyn_in,
2704 bfd_elf64_swap_dyn_out,
2705 bfd_elf64_swap_reloc_in,
2706 bfd_elf64_swap_reloc_out,
2707 bfd_elf64_swap_reloca_in,
2708 bfd_elf64_swap_reloca_out
2711 #define TARGET_BIG_SYM bfd_elf64_hppa_vec
2712 #define TARGET_BIG_NAME "elf64-hppa"
2713 #define ELF_ARCH bfd_arch_hppa
2714 #define ELF_MACHINE_CODE EM_PARISC
2715 /* This is not strictly correct. The maximum page size for PA2.0 is
2716 64M. But everything still uses 4k. */
2717 #define ELF_MAXPAGESIZE 0x1000
2718 #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
2719 #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
2720 #define elf_info_to_howto elf_hppa_info_to_howto
2721 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
2723 #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
2724 #define elf_backend_object_p elf64_hppa_object_p
2725 #define elf_backend_final_write_processing \
2726 elf_hppa_final_write_processing
2727 #define elf_backend_fake_sections elf_hppa_fake_sections
2728 #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
2730 #define elf_backend_relocate_section elf_hppa_relocate_section
2732 #define bfd_elf64_bfd_final_link elf_hppa_final_link
2734 #define elf_backend_create_dynamic_sections \
2735 elf64_hppa_create_dynamic_sections
2736 #define elf_backend_post_process_headers elf64_hppa_post_process_headers
2738 #define elf_backend_adjust_dynamic_symbol \
2739 elf64_hppa_adjust_dynamic_symbol
2741 #define elf_backend_size_dynamic_sections \
2742 elf64_hppa_size_dynamic_sections
2744 #define elf_backend_finish_dynamic_symbol \
2745 elf64_hppa_finish_dynamic_symbol
2746 #define elf_backend_finish_dynamic_sections \
2747 elf64_hppa_finish_dynamic_sections
2749 /* Stuff for the BFD linker: */
2750 #define bfd_elf64_bfd_link_hash_table_create \
2751 elf64_hppa_hash_table_create
2753 #define elf_backend_check_relocs \
2754 elf64_hppa_check_relocs
2756 #define elf_backend_size_info \
2757 hppa64_elf_size_info
2759 #define elf_backend_additional_program_headers \
2760 elf64_hppa_additional_program_headers
2762 #define elf_backend_modify_segment_map \
2763 elf64_hppa_modify_segment_map
2765 #define elf_backend_link_output_symbol_hook \
2766 elf64_hppa_link_output_symbol_hook
2768 #define elf_backend_want_got_plt 0
2769 #define elf_backend_plt_readonly 0
2770 #define elf_backend_want_plt_sym 0
2771 #define elf_backend_got_header_size 0
2772 #define elf_backend_plt_header_size 0
2773 #define elf_backend_type_change_ok TRUE
2774 #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type
2775 #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class
2776 #define elf_backend_rela_normal 1
2777 #define elf_backend_special_sections elf64_hppa_special_sections
2779 #include "elf64-target.h"
2781 #undef TARGET_BIG_SYM
2782 #define TARGET_BIG_SYM bfd_elf64_hppa_linux_vec
2783 #undef TARGET_BIG_NAME
2784 #define TARGET_BIG_NAME "elf64-hppa-linux"
2786 #undef elf_backend_special_sections
2788 #define INCLUDED_TARGET_FILE 1
2789 #include "elf64-target.h"