1 /* VAX series support for 32-bit ELF
2 Copyright (C) 1993-2018 Free Software Foundation, Inc.
3 Contributed by Matt Thomas <matt@3am-software.com>.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
29 static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
30 static bfd_boolean rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *);
31 static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *,
32 struct bfd_hash_table *,
34 static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *);
35 static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *,
36 asection *, const Elf_Internal_Rela *);
37 static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *,
38 struct elf_link_hash_entry *);
39 static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *);
40 static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *,
41 bfd *, asection *, bfd_byte *,
43 Elf_Internal_Sym *, asection **);
44 static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *,
45 struct elf_link_hash_entry *,
47 static bfd_boolean elf_vax_finish_dynamic_sections (bfd *,
48 struct bfd_link_info *);
49 static bfd_vma elf_vax_plt_sym_val (bfd_vma, const asection *,
52 static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword);
53 static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, void *);
55 static reloc_howto_type howto_table[] = {
56 HOWTO (R_VAX_NONE, /* type */
58 3, /* size (0 = byte, 1 = short, 2 = long) */
60 FALSE, /* pc_relative */
62 complain_overflow_dont, /* complain_on_overflow */
63 bfd_elf_generic_reloc, /* special_function */
64 "R_VAX_NONE", /* name */
65 FALSE, /* partial_inplace */
67 0x00000000, /* dst_mask */
68 FALSE), /* pcrel_offset */
70 HOWTO (R_VAX_32, /* type */
72 2, /* size (0 = byte, 1 = short, 2 = long) */
74 FALSE, /* pc_relative */
76 complain_overflow_bitfield, /* complain_on_overflow */
77 bfd_elf_generic_reloc, /* special_function */
78 "R_VAX_32", /* name */
79 FALSE, /* partial_inplace */
81 0xffffffff, /* dst_mask */
82 FALSE), /* pcrel_offset */
84 HOWTO (R_VAX_16, /* type */
86 1, /* size (0 = byte, 1 = short, 2 = long) */
88 FALSE, /* pc_relative */
90 complain_overflow_bitfield, /* complain_on_overflow */
91 bfd_elf_generic_reloc, /* special_function */
92 "R_VAX_16", /* name */
93 FALSE, /* partial_inplace */
95 0x0000ffff, /* dst_mask */
96 FALSE), /* pcrel_offset */
98 HOWTO (R_VAX_8, /* type */
100 0, /* size (0 = byte, 1 = short, 2 = long) */
102 FALSE, /* pc_relative */
104 complain_overflow_bitfield, /* complain_on_overflow */
105 bfd_elf_generic_reloc, /* special_function */
106 "R_VAX_8", /* name */
107 FALSE, /* partial_inplace */
109 0x000000ff, /* dst_mask */
110 FALSE), /* pcrel_offset */
112 HOWTO (R_VAX_PC32, /* type */
114 2, /* size (0 = byte, 1 = short, 2 = long) */
116 TRUE, /* pc_relative */
118 complain_overflow_bitfield, /* complain_on_overflow */
119 bfd_elf_generic_reloc, /* special_function */
120 "R_VAX_PC32", /* name */
121 FALSE, /* partial_inplace */
123 0xffffffff, /* dst_mask */
124 TRUE), /* pcrel_offset */
126 HOWTO (R_VAX_PC16, /* type */
128 1, /* size (0 = byte, 1 = short, 2 = long) */
130 TRUE, /* pc_relative */
132 complain_overflow_signed, /* complain_on_overflow */
133 bfd_elf_generic_reloc, /* special_function */
134 "R_VAX_PC16", /* name */
135 FALSE, /* partial_inplace */
137 0x0000ffff, /* dst_mask */
138 TRUE), /* pcrel_offset */
140 HOWTO (R_VAX_PC8, /* type */
142 0, /* size (0 = byte, 1 = short, 2 = long) */
144 TRUE, /* pc_relative */
146 complain_overflow_signed, /* complain_on_overflow */
147 bfd_elf_generic_reloc, /* special_function */
148 "R_VAX_PC8", /* name */
149 FALSE, /* partial_inplace */
151 0x000000ff, /* dst_mask */
152 TRUE), /* pcrel_offset */
154 HOWTO (R_VAX_GOT32, /* type */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
158 TRUE, /* pc_relative */
160 complain_overflow_bitfield, /* complain_on_overflow */
161 bfd_elf_generic_reloc, /* special_function */
162 "R_VAX_GOT32", /* name */
163 FALSE, /* partial_inplace */
165 0xffffffff, /* dst_mask */
166 TRUE), /* pcrel_offset */
174 HOWTO (R_VAX_PLT32, /* type */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
178 TRUE, /* pc_relative */
180 complain_overflow_bitfield, /* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_VAX_PLT32", /* name */
183 FALSE, /* partial_inplace */
185 0xffffffff, /* dst_mask */
186 TRUE), /* pcrel_offset */
194 HOWTO (R_VAX_COPY, /* type */
196 0, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_dont, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_VAX_COPY", /* name */
203 FALSE, /* partial_inplace */
205 0xffffffff, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 HOWTO (R_VAX_GLOB_DAT, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE, /* pc_relative */
214 complain_overflow_dont, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_VAX_GLOB_DAT", /* name */
217 FALSE, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
222 HOWTO (R_VAX_JMP_SLOT, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE, /* pc_relative */
228 complain_overflow_dont, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_VAX_JMP_SLOT", /* name */
231 FALSE, /* partial_inplace */
233 0xffffffff, /* dst_mask */
234 FALSE), /* pcrel_offset */
236 HOWTO (R_VAX_RELATIVE, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_dont, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_VAX_RELATIVE", /* name */
245 FALSE, /* partial_inplace */
247 0xffffffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* GNU extension to record C++ vtable hierarchy */
251 HOWTO (R_VAX_GNU_VTINHERIT, /* type */
253 2, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE, /* pc_relative */
257 complain_overflow_dont, /* complain_on_overflow */
258 NULL, /* special_function */
259 "R_VAX_GNU_VTINHERIT", /* name */
260 FALSE, /* partial_inplace */
263 FALSE), /* pcrel_offset */
265 /* GNU extension to record C++ vtable member usage */
266 HOWTO (R_VAX_GNU_VTENTRY, /* type */
268 2, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE, /* pc_relative */
272 complain_overflow_dont, /* complain_on_overflow */
273 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
274 "R_VAX_GNU_VTENTRY", /* name */
275 FALSE, /* partial_inplace */
278 FALSE), /* pcrel_offset */
282 rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
286 r_type = ELF32_R_TYPE (dst->r_info);
287 if (r_type >= R_VAX_max)
289 /* xgettext:c-format */
290 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
292 bfd_set_error (bfd_error_bad_value);
295 cache_ptr->howto = &howto_table[r_type];
299 #define elf_info_to_howto rtype_to_howto
303 bfd_reloc_code_real_type bfd_val;
306 { BFD_RELOC_NONE, R_VAX_NONE },
307 { BFD_RELOC_32, R_VAX_32 },
308 { BFD_RELOC_16, R_VAX_16 },
309 { BFD_RELOC_8, R_VAX_8 },
310 { BFD_RELOC_32_PCREL, R_VAX_PC32 },
311 { BFD_RELOC_16_PCREL, R_VAX_PC16 },
312 { BFD_RELOC_8_PCREL, R_VAX_PC8 },
313 { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 },
314 { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 },
315 { BFD_RELOC_NONE, R_VAX_COPY },
316 { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT },
317 { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT },
318 { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE },
319 { BFD_RELOC_CTOR, R_VAX_32 },
320 { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT },
321 { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY },
324 static reloc_howto_type *
325 reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
328 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
330 if (reloc_map[i].bfd_val == code)
331 return &howto_table[reloc_map[i].elf_val];
336 static reloc_howto_type *
337 reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
342 for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
343 if (howto_table[i].name != NULL
344 && strcasecmp (howto_table[i].name, r_name) == 0)
345 return &howto_table[i];
350 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
351 #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
352 #define ELF_ARCH bfd_arch_vax
353 /* end code generated by elf.el */
355 /* Functions for the VAX ELF linker. */
357 /* The name of the dynamic interpreter. This is put in the .interp
360 #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so"
362 /* The size in bytes of an entry in the procedure linkage table. */
364 #define PLT_ENTRY_SIZE 12
366 /* The first entry in a procedure linkage table looks like this. See
367 the SVR4 ABI VAX supplement to see how this works. */
369 static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] =
371 0xdd, 0xef, /* pushl l^ */
372 0, 0, 0, 0, /* offset to .plt.got + 4 */
373 0x17, 0xff, /* jmp @L^(pc) */
374 0, 0, 0, 0, /* offset to .plt.got + 8 */
377 /* Subsequent entries in a procedure linkage table look like this. */
379 static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] =
381 0xfc, 0x0f, /* .word ^M<r11:r2> */
382 0x16, 0xef, /* jsb L^(pc) */
383 0, 0, 0, 0, /* replaced with offset to start of .plt */
384 0, 0, 0, 0, /* index into .rela.plt */
387 /* The VAX linker needs to keep track of the number of relocs that it
388 decides to copy in check_relocs for each symbol. This is so that it
389 can discard PC relative relocs if it doesn't need them when linking
390 with -Bsymbolic. We store the information in a field extending the
391 regular ELF linker hash table. */
393 /* This structure keeps track of the number of PC relative relocs we have
394 copied for a given symbol. */
396 struct elf_vax_pcrel_relocs_copied
399 struct elf_vax_pcrel_relocs_copied *next;
400 /* A section in dynobj. */
402 /* Number of relocs copied in this section. */
406 /* VAX ELF linker hash entry. */
408 struct elf_vax_link_hash_entry
410 struct elf_link_hash_entry root;
412 /* Number of PC relative relocs copied for this symbol. */
413 struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied;
418 /* Declare this now that the above structures are defined. */
420 static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *,
423 /* Declare this now that the above structures are defined. */
425 static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *,
428 /* Traverse an VAX ELF linker hash table. */
430 #define elf_vax_link_hash_traverse(table, func, info) \
431 (elf_link_hash_traverse \
433 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
436 /* Create an entry in an VAX ELF linker hash table. */
438 static struct bfd_hash_entry *
439 elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry,
440 struct bfd_hash_table *table,
443 struct elf_vax_link_hash_entry *ret =
444 (struct elf_vax_link_hash_entry *) entry;
446 /* Allocate the structure if it has not already been allocated by a
449 ret = ((struct elf_vax_link_hash_entry *)
450 bfd_hash_allocate (table,
451 sizeof (struct elf_vax_link_hash_entry)));
453 return (struct bfd_hash_entry *) ret;
455 /* Call the allocation method of the superclass. */
456 ret = ((struct elf_vax_link_hash_entry *)
457 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
461 ret->pcrel_relocs_copied = NULL;
464 return (struct bfd_hash_entry *) ret;
467 /* Create an VAX ELF linker hash table. */
469 static struct bfd_link_hash_table *
470 elf_vax_link_hash_table_create (bfd *abfd)
472 struct elf_link_hash_table *ret;
473 bfd_size_type amt = sizeof (struct elf_link_hash_table);
475 ret = bfd_zmalloc (amt);
479 if (!_bfd_elf_link_hash_table_init (ret, abfd,
480 elf_vax_link_hash_newfunc,
481 sizeof (struct elf_vax_link_hash_entry),
491 /* Keep vax-specific flags in the ELF header */
493 elf32_vax_set_private_flags (bfd *abfd, flagword flags)
495 elf_elfheader (abfd)->e_flags = flags;
496 elf_flags_init (abfd) = TRUE;
500 /* Merge backend specific data from an object file to the output
501 object file when linking. */
503 elf32_vax_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
505 bfd *obfd = info->output_bfd;
508 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
509 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
512 in_flags = elf_elfheader (ibfd)->e_flags;
514 if (!elf_flags_init (obfd))
516 elf_flags_init (obfd) = TRUE;
517 elf_elfheader (obfd)->e_flags = in_flags;
523 /* Display the flags field */
525 elf32_vax_print_private_bfd_data (bfd *abfd, void * ptr)
527 FILE *file = (FILE *) ptr;
529 BFD_ASSERT (abfd != NULL && ptr != NULL);
531 /* Print normal ELF private data. */
532 _bfd_elf_print_private_bfd_data (abfd, ptr);
534 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
536 /* xgettext:c-format */
537 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
539 if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC)
540 fprintf (file, _(" [nonpic]"));
542 if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT)
543 fprintf (file, _(" [d-float]"));
545 if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT)
546 fprintf (file, _(" [g-float]"));
552 /* Look through the relocs for a section during the first phase, and
553 allocate space in the global offset table or procedure linkage
557 elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
558 const Elf_Internal_Rela *relocs)
561 Elf_Internal_Shdr *symtab_hdr;
562 struct elf_link_hash_entry **sym_hashes;
563 const Elf_Internal_Rela *rel;
564 const Elf_Internal_Rela *rel_end;
567 if (bfd_link_relocatable (info))
570 dynobj = elf_hash_table (info)->dynobj;
571 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
572 sym_hashes = elf_sym_hashes (abfd);
576 rel_end = relocs + sec->reloc_count;
577 for (rel = relocs; rel < rel_end; rel++)
579 unsigned long r_symndx;
580 struct elf_link_hash_entry *h;
582 r_symndx = ELF32_R_SYM (rel->r_info);
584 if (r_symndx < symtab_hdr->sh_info)
588 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
589 while (h->root.type == bfd_link_hash_indirect
590 || h->root.type == bfd_link_hash_warning)
591 h = (struct elf_link_hash_entry *) h->root.u.i.link;
594 switch (ELF32_R_TYPE (rel->r_info))
597 BFD_ASSERT (h != NULL);
599 /* If this is a local symbol, we resolve it directly without
600 creating a global offset table entry. */
602 || h == elf_hash_table (info)->hgot
603 || h == elf_hash_table (info)->hplt)
606 /* This symbol requires a global offset table entry. */
610 /* Create the .got section. */
611 elf_hash_table (info)->dynobj = dynobj = abfd;
612 if (!_bfd_elf_create_got_section (dynobj, info))
618 struct elf_vax_link_hash_entry *eh;
620 eh = (struct elf_vax_link_hash_entry *) h;
621 if (h->got.refcount == -1)
624 eh->got_addend = rel->r_addend;
629 if (eh->got_addend != (bfd_vma) rel->r_addend)
631 /* xgettext:c-format */
632 (_("%pB: warning: GOT addend of %" PRId64 " to `%s' does"
633 " not match previous GOT addend of %" PRId64),
634 abfd, (int64_t) rel->r_addend, h->root.root.string,
635 (int64_t) eh->got_addend);
642 /* This symbol requires a procedure linkage table entry. We
643 actually build the entry in adjust_dynamic_symbol,
644 because this might be a case of linking PIC code which is
645 never referenced by a dynamic object, in which case we
646 don't need to generate a procedure linkage table entry
648 BFD_ASSERT (h != NULL);
650 /* If this is a local symbol, we resolve it directly without
651 creating a procedure linkage table entry. */
656 if (h->plt.refcount == -1)
665 /* If we are creating a shared library and this is not a local
666 symbol, we need to copy the reloc into the shared library.
667 However when linking with -Bsymbolic and this is a global
668 symbol which is defined in an object we are including in the
669 link (i.e., DEF_REGULAR is set), then we can resolve the
670 reloc directly. At this point we have not seen all the input
671 files, so it is possible that DEF_REGULAR is not set now but
672 will be set later (it is never cleared). We account for that
673 possibility below by storing information in the
674 pcrel_relocs_copied field of the hash table entry. */
675 if (!(bfd_link_pic (info)
676 && (sec->flags & SEC_ALLOC) != 0
679 || !h->def_regular)))
682 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
685 /* Make sure a plt entry is created for this symbol if
686 it turns out to be a function defined by a dynamic
688 if (h->plt.refcount == -1)
695 /* If this is a local symbol, we can resolve it directly. */
697 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
705 if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
707 /* Make sure a plt entry is created for this symbol if it
708 turns out to be a function defined by a dynamic object. */
709 if (h->plt.refcount == -1)
715 /* If we are creating a shared library, we need to copy the
716 reloc into the shared library. */
717 if (bfd_link_pic (info)
718 && (sec->flags & SEC_ALLOC) != 0)
720 /* When creating a shared object, we must copy these
721 reloc types into the output file. We create a reloc
722 section in dynobj and make room for this reloc. */
725 sreloc = _bfd_elf_make_dynamic_reloc_section
726 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
731 if (sec->flags & SEC_READONLY)
732 info->flags |= DF_TEXTREL;
735 sreloc->size += sizeof (Elf32_External_Rela);
737 /* If we are linking with -Bsymbolic, we count the number of
738 PC relative relocations we have entered for this symbol,
739 so that we can discard them again if the symbol is later
740 defined by a regular object. Note that this function is
741 only called if we are using a vaxelf linker hash table,
742 which means that h is really a pointer to an
743 elf_vax_link_hash_entry. */
744 if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8
745 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16
746 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32)
749 struct elf_vax_link_hash_entry *eh;
750 struct elf_vax_pcrel_relocs_copied *p;
752 eh = (struct elf_vax_link_hash_entry *) h;
754 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
755 if (p->section == sreloc)
760 p = ((struct elf_vax_pcrel_relocs_copied *)
761 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
764 p->next = eh->pcrel_relocs_copied;
765 eh->pcrel_relocs_copied = p;
776 /* This relocation describes the C++ object vtable hierarchy.
777 Reconstruct it for later use during GC. */
778 case R_VAX_GNU_VTINHERIT:
779 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
783 /* This relocation describes which C++ vtable entries are actually
784 used. Record for later use during GC. */
785 case R_VAX_GNU_VTENTRY:
786 BFD_ASSERT (h != NULL);
788 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
800 /* Return the section that should be marked against GC for a given
804 elf_vax_gc_mark_hook (asection *sec,
805 struct bfd_link_info *info,
806 Elf_Internal_Rela *rel,
807 struct elf_link_hash_entry *h,
808 Elf_Internal_Sym *sym)
811 switch (ELF32_R_TYPE (rel->r_info))
813 case R_VAX_GNU_VTINHERIT:
814 case R_VAX_GNU_VTENTRY:
818 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
821 /* Adjust a symbol defined by a dynamic object and referenced by a
822 regular object. The current definition is in some section of the
823 dynamic object, but we're not including those sections. We have to
824 change the definition to something the rest of the link can
828 elf_vax_adjust_dynamic_symbol (struct bfd_link_info *info,
829 struct elf_link_hash_entry *h)
834 dynobj = elf_hash_table (info)->dynobj;
836 /* Make sure we know what is going on here. */
837 BFD_ASSERT (dynobj != NULL
842 && !h->def_regular)));
844 /* If this is a function, put it in the procedure linkage table. We
845 will fill in the contents of the procedure linkage table later,
846 when we know the address of the .got section. */
847 if (h->type == STT_FUNC
850 if (h->plt.refcount <= 0
851 || SYMBOL_CALLS_LOCAL (info, h)
852 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
853 && h->root.type == bfd_link_hash_undefweak))
855 /* This case can occur if we saw a PLTxx reloc in an input
856 file, but the symbol was never referred to by a dynamic
857 object, or if all references were garbage collected. In
858 such a case, we don't actually need to build a procedure
859 linkage table, and we can just do a PCxx reloc instead. */
860 h->plt.offset = (bfd_vma) -1;
865 s = elf_hash_table (info)->splt;
866 BFD_ASSERT (s != NULL);
868 /* If this is the first .plt entry, make room for the special
872 s->size += PLT_ENTRY_SIZE;
875 /* If this symbol is not defined in a regular file, and we are
876 not generating a shared library, then set the symbol to this
877 location in the .plt. This is required to make function
878 pointers compare as equal between the normal executable and
879 the shared library. */
880 if (!bfd_link_pic (info)
883 h->root.u.def.section = s;
884 h->root.u.def.value = s->size;
887 h->plt.offset = s->size;
889 /* Make room for this entry. */
890 s->size += PLT_ENTRY_SIZE;
892 /* We also need to make an entry in the .got.plt section, which
893 will be placed in the .got section by the linker script. */
895 s = elf_hash_table (info)->sgotplt;
896 BFD_ASSERT (s != NULL);
899 /* We also need to make an entry in the .rela.plt section. */
901 s = elf_hash_table (info)->srelplt;
902 BFD_ASSERT (s != NULL);
903 s->size += sizeof (Elf32_External_Rela);
908 /* Reinitialize the plt offset now that it is not used as a reference
910 h->plt.offset = (bfd_vma) -1;
912 /* If this is a weak symbol, and there is a real definition, the
913 processor independent code will have arranged for us to see the
914 real definition first, and we can just use the same value. */
917 struct elf_link_hash_entry *def = weakdef (h);
918 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
919 h->root.u.def.section = def->root.u.def.section;
920 h->root.u.def.value = def->root.u.def.value;
924 /* This is a reference to a symbol defined by a dynamic object which
925 is not a function. */
927 /* If we are creating a shared library, we must presume that the
928 only references to the symbol are via the global offset table.
929 For such cases we need not do anything here; the relocations will
930 be handled correctly by relocate_section. */
931 if (bfd_link_pic (info))
934 /* We must allocate the symbol in our .dynbss section, which will
935 become part of the .bss section of the executable. There will be
936 an entry for this symbol in the .dynsym section. The dynamic
937 object will contain position independent code, so all references
938 from the dynamic object to this symbol will go through the global
939 offset table. The dynamic linker will use the .dynsym entry to
940 determine the address it must put in the global offset table, so
941 both the dynamic object and the regular object will refer to the
942 same memory location for the variable. */
944 s = bfd_get_linker_section (dynobj, ".dynbss");
945 BFD_ASSERT (s != NULL);
947 /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to
948 copy the initial value out of the dynamic object and into the
949 runtime process image. We need to remember the offset into the
950 .rela.bss section we are going to use. */
951 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
955 srel = bfd_get_linker_section (dynobj, ".rela.bss");
956 BFD_ASSERT (srel != NULL);
957 srel->size += sizeof (Elf32_External_Rela);
961 return _bfd_elf_adjust_dynamic_copy (info, h, s);
964 /* This function is called via elf_link_hash_traverse. It resets GOT
965 and PLT (.GOT) reference counts back to -1 so normal PC32 relocation
969 elf_vax_discard_got_entries (struct elf_link_hash_entry *h,
970 void *infoptr ATTRIBUTE_UNUSED)
972 h->got.refcount = -1;
973 h->plt.refcount = -1;
978 /* Discard unused dynamic data if this is a static link. */
981 elf_vax_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
982 struct bfd_link_info *info)
987 dynobj = elf_hash_table (info)->dynobj;
989 if (dynobj && !elf_hash_table (info)->dynamic_sections_created)
991 /* We may have created entries in the .rela.got and .got sections.
992 However, if we are not creating the dynamic sections, we will
993 not actually use these entries. Reset the size of .rela.got
994 and .got, which will cause them to get stripped from the output
996 s = elf_hash_table (info)->srelgot;
999 s = elf_hash_table (info)->sgotplt;
1002 s = elf_hash_table (info)->sgot;
1007 /* If this is a static link, we need to discard all the got entries we've
1009 if (!dynobj || !elf_hash_table (info)->dynamic_sections_created)
1010 elf_link_hash_traverse (elf_hash_table (info),
1011 elf_vax_discard_got_entries,
1017 /* Set the sizes of the dynamic sections. */
1020 elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1026 bfd_boolean reltext;
1028 dynobj = elf_hash_table (info)->dynobj;
1029 BFD_ASSERT (dynobj != NULL);
1031 if (elf_hash_table (info)->dynamic_sections_created)
1033 /* Set the contents of the .interp section to the interpreter. */
1034 if (bfd_link_executable (info) && !info->nointerp)
1036 s = bfd_get_linker_section (dynobj, ".interp");
1037 BFD_ASSERT (s != NULL);
1038 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1039 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1043 /* If this is a -Bsymbolic shared link, then we need to discard all PC
1044 relative relocs against symbols defined in a regular object. We
1045 allocated space for them in the check_relocs routine, but we will not
1046 fill them in in the relocate_section routine. */
1047 if (bfd_link_pic (info) && info->symbolic)
1048 elf_vax_link_hash_traverse (elf_hash_table (info),
1049 elf_vax_discard_copies,
1052 /* If this is a -Bsymbolic shared link, we need to discard all the got
1053 entries we've recorded. Otherwise, we need to instantiate (allocate
1055 elf_link_hash_traverse (elf_hash_table (info),
1056 elf_vax_instantiate_got_entries,
1059 /* The check_relocs and adjust_dynamic_symbol entry points have
1060 determined the sizes of the various dynamic sections. Allocate
1065 for (s = dynobj->sections; s != NULL; s = s->next)
1069 if ((s->flags & SEC_LINKER_CREATED) == 0)
1072 /* It's OK to base decisions on the section name, because none
1073 of the dynobj section names depend upon the input files. */
1074 name = bfd_get_section_name (dynobj, s);
1076 if (strcmp (name, ".plt") == 0)
1078 /* Remember whether there is a PLT. */
1081 else if (CONST_STRNEQ (name, ".rela"))
1087 /* Remember whether there are any reloc sections other
1089 if (strcmp (name, ".rela.plt") != 0)
1091 const char *outname;
1095 /* If this relocation section applies to a read only
1096 section, then we probably need a DT_TEXTREL
1097 entry. .rela.plt is actually associated with
1098 .got.plt, which is never readonly. */
1099 outname = bfd_get_section_name (output_bfd,
1101 target = bfd_get_section_by_name (output_bfd, outname + 5);
1103 && (target->flags & SEC_READONLY) != 0
1104 && (target->flags & SEC_ALLOC) != 0)
1108 /* We use the reloc_count field as a counter if we need
1109 to copy relocs into the output file. */
1113 else if (! CONST_STRNEQ (name, ".got")
1114 && strcmp (name, ".dynbss") != 0)
1116 /* It's not one of our sections, so don't allocate space. */
1122 /* If we don't need this section, strip it from the
1123 output file. This is mostly to handle .rela.bss and
1124 .rela.plt. We must create both sections in
1125 create_dynamic_sections, because they must be created
1126 before the linker maps input sections to output
1127 sections. The linker does that before
1128 adjust_dynamic_symbol is called, and it is that
1129 function which decides whether anything needs to go
1130 into these sections. */
1131 s->flags |= SEC_EXCLUDE;
1135 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1138 /* Allocate memory for the section contents. */
1139 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
1140 if (s->contents == NULL)
1144 if (elf_hash_table (info)->dynamic_sections_created)
1146 /* Add some entries to the .dynamic section. We fill in the
1147 values later, in elf_vax_finish_dynamic_sections, but we
1148 must add the entries now so that we get the correct size for
1149 the .dynamic section. The DT_DEBUG entry is filled in by the
1150 dynamic linker and used by the debugger. */
1151 #define add_dynamic_entry(TAG, VAL) \
1152 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1154 if (!bfd_link_pic (info))
1156 if (!add_dynamic_entry (DT_DEBUG, 0))
1162 if (!add_dynamic_entry (DT_PLTGOT, 0)
1163 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1164 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1165 || !add_dynamic_entry (DT_JMPREL, 0))
1171 if (!add_dynamic_entry (DT_RELA, 0)
1172 || !add_dynamic_entry (DT_RELASZ, 0)
1173 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
1177 if (reltext || (info->flags & DF_TEXTREL) != 0)
1179 if (!add_dynamic_entry (DT_TEXTREL, 0))
1183 #undef add_dynamic_entry
1188 /* This function is called via elf_vax_link_hash_traverse if we are
1189 creating a shared object with -Bsymbolic. It discards the space
1190 allocated to copy PC relative relocs against symbols which are defined
1191 in regular objects. We allocated space for them in the check_relocs
1192 routine, but we won't fill them in in the relocate_section routine. */
1195 elf_vax_discard_copies (struct elf_vax_link_hash_entry *h,
1196 void * ignore ATTRIBUTE_UNUSED)
1198 struct elf_vax_pcrel_relocs_copied *s;
1200 /* We only discard relocs for symbols defined in a regular object. */
1201 if (!h->root.def_regular)
1204 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
1205 s->section->size -= s->count * sizeof (Elf32_External_Rela);
1210 /* This function is called via elf_link_hash_traverse. It looks for
1211 entries that have GOT or PLT (.GOT) references. If creating a shared
1212 object with -Bsymbolic, or the symbol has been forced local, then it
1213 resets the reference count back to -1 so normal PC32 relocation will
1214 be done. Otherwise space in the .got and .rela.got will be reserved
1218 elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, void * infoptr)
1220 struct bfd_link_info *info = (struct bfd_link_info *) infoptr;
1225 /* We don't care about non-GOT (and non-PLT) entries. */
1226 if (h->got.refcount <= 0 && h->plt.refcount <= 0)
1229 dynobj = elf_hash_table (info)->dynobj;
1230 BFD_ASSERT (dynobj != NULL);
1232 sgot = elf_hash_table (info)->sgot;
1233 srelgot = elf_hash_table (info)->srelgot;
1235 if (SYMBOL_REFERENCES_LOCAL (info, h))
1237 h->got.refcount = -1;
1238 h->plt.refcount = -1;
1240 else if (h->got.refcount > 0)
1242 /* Make sure this symbol is output as a dynamic symbol. */
1243 if (h->dynindx == -1)
1245 if (!bfd_elf_link_record_dynamic_symbol (info, h))
1249 /* Allocate space in the .got and .rela.got sections. */
1251 srelgot->size += sizeof (Elf32_External_Rela);
1257 /* Relocate an VAX ELF section. */
1260 elf_vax_relocate_section (bfd *output_bfd,
1261 struct bfd_link_info *info,
1263 asection *input_section,
1265 Elf_Internal_Rela *relocs,
1266 Elf_Internal_Sym *local_syms,
1267 asection **local_sections)
1269 Elf_Internal_Shdr *symtab_hdr;
1270 struct elf_link_hash_entry **sym_hashes;
1277 Elf_Internal_Rela *rel;
1278 Elf_Internal_Rela *relend;
1280 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1281 sym_hashes = elf_sym_hashes (input_bfd);
1289 relend = relocs + input_section->reloc_count;
1290 for (; rel < relend; rel++)
1293 reloc_howto_type *howto;
1294 unsigned long r_symndx;
1295 struct elf_link_hash_entry *h;
1296 Elf_Internal_Sym *sym;
1299 bfd_reloc_status_type r;
1301 r_type = ELF32_R_TYPE (rel->r_info);
1302 if (r_type < 0 || r_type >= (int) R_VAX_max)
1304 bfd_set_error (bfd_error_bad_value);
1307 howto = howto_table + r_type;
1309 r_symndx = ELF32_R_SYM (rel->r_info);
1313 if (r_symndx < symtab_hdr->sh_info)
1315 sym = local_syms + r_symndx;
1316 sec = local_sections[r_symndx];
1317 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1321 bfd_boolean unresolved_reloc;
1322 bfd_boolean warned, ignored;
1324 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1325 r_symndx, symtab_hdr, sym_hashes,
1327 unresolved_reloc, warned, ignored);
1329 if ((h->root.type == bfd_link_hash_defined
1330 || h->root.type == bfd_link_hash_defweak)
1331 && ((r_type == R_VAX_PLT32
1332 && h->plt.offset != (bfd_vma) -1
1334 && elf_hash_table (info)->dynamic_sections_created)
1335 || (r_type == R_VAX_GOT32
1336 && h->got.offset != (bfd_vma) -1
1338 && elf_hash_table (info)->dynamic_sections_created
1339 && (! bfd_link_pic (info)
1340 || (! info->symbolic && h->dynindx != -1)
1341 || !h->def_regular))
1342 || (bfd_link_pic (info)
1343 && ((! info->symbolic && h->dynindx != -1)
1345 && ((input_section->flags & SEC_ALLOC) != 0
1346 /* DWARF will emit R_VAX_32 relocations in its
1347 sections against symbols defined externally
1348 in shared libraries. We can't do anything
1351 || ((input_section->flags & SEC_DEBUGGING) != 0
1353 && (r_type == R_VAX_8
1354 || r_type == R_VAX_16
1355 || r_type == R_VAX_32))))
1356 /* In these cases, we don't need the relocation
1357 value. We check specially because in some
1358 obscure cases sec->output_section will be NULL. */
1362 if (sec != NULL && discarded_section (sec))
1363 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1364 rel, 1, relend, howto, 0, contents);
1366 if (bfd_link_relocatable (info))
1372 /* Relocation is to the address of the entry for this symbol
1373 in the global offset table. */
1375 /* Resolve a GOTxx reloc against a local symbol directly,
1376 without using the global offset table. */
1378 || h->got.offset == (bfd_vma) -1)
1384 sgot = elf_hash_table (info)->sgot;
1385 BFD_ASSERT (sgot != NULL);
1387 off = h->got.offset;
1388 BFD_ASSERT (off < sgot->size);
1390 bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off);
1392 relocation = sgot->output_offset + off;
1393 /* The GOT relocation uses the addend. */
1396 /* Change the reference to be indirect. */
1397 contents[rel->r_offset - 1] |= 0x10;
1398 relocation += sgot->output_section->vma;
1403 /* If we are creating an executable and the function this
1404 reloc refers to is in a shared lib, then we made a PLT
1405 entry for this symbol and need to handle the reloc like
1407 if (bfd_link_pic (info))
1408 goto r_vax_pc32_shared;
1411 /* Relocation is to the entry for this symbol in the
1412 procedure linkage table. */
1414 /* Resolve a PLTxx reloc against a local symbol directly,
1415 without using the procedure linkage table. */
1417 || h->plt.offset == (bfd_vma) -1)
1420 splt = elf_hash_table (info)->splt;
1421 BFD_ASSERT (splt != NULL);
1423 sgotplt = elf_hash_table (info)->sgotplt;
1424 BFD_ASSERT (sgotplt != NULL);
1426 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1428 /* Get the offset into the .got table of the entry that
1429 corresponds to this function. Each .got entry is 4 bytes.
1430 The first two are reserved. */
1431 got_offset = (plt_index + 3) * 4;
1433 /* We want the relocation to point into the .got.plt instead
1434 of the plt itself. */
1435 relocation = (sgotplt->output_section->vma
1436 + sgotplt->output_offset
1438 contents[rel->r_offset-1] |= 0x10; /* make indirect */
1439 if (rel->r_addend == 2)
1443 else if (rel->r_addend != 0)
1445 /* xgettext:c-format */
1446 (_("%pB: warning: PLT addend of %" PRId64 " to `%s'"
1447 " from %pA section ignored"),
1448 input_bfd, (int64_t) rel->r_addend, h->root.root.string,
1458 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1465 if (bfd_link_pic (info)
1466 && r_symndx != STN_UNDEF
1467 && (input_section->flags & SEC_ALLOC) != 0
1468 && ((r_type != R_VAX_PC8
1469 && r_type != R_VAX_PC16
1470 && r_type != R_VAX_PC32)
1471 || ((input_section->flags & SEC_CODE)
1473 || (!h->def_regular && h->type != STT_SECTION)))))
1475 Elf_Internal_Rela outrel;
1477 bfd_boolean skip, relocate;
1479 /* When generating a shared object, these relocations
1480 are copied into the output file to be resolved at run
1484 sreloc = _bfd_elf_get_dynamic_reloc_section
1485 (input_bfd, input_section, /*rela?*/ TRUE);
1494 _bfd_elf_section_offset (output_bfd, info, input_section,
1496 if (outrel.r_offset == (bfd_vma) -1)
1498 if (outrel.r_offset == (bfd_vma) -2)
1499 skip = TRUE, relocate = TRUE;
1500 outrel.r_offset += (input_section->output_section->vma
1501 + input_section->output_offset);
1504 memset (&outrel, 0, sizeof outrel);
1505 /* h->dynindx may be -1 if the symbol was marked to
1508 && ((! info->symbolic && h->dynindx != -1)
1509 || !h->def_regular))
1511 BFD_ASSERT (h->dynindx != -1);
1512 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1513 outrel.r_addend = relocation + rel->r_addend;
1517 if (r_type == R_VAX_32)
1520 outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE);
1521 BFD_ASSERT (bfd_get_signed_32 (input_bfd,
1522 &contents[rel->r_offset]) == 0);
1523 outrel.r_addend = relocation + rel->r_addend;
1529 if (bfd_is_abs_section (sec))
1531 else if (sec == NULL || sec->owner == NULL)
1533 bfd_set_error (bfd_error_bad_value);
1540 /* We are turning this relocation into one
1541 against a section symbol. It would be
1542 proper to subtract the symbol's value,
1543 osec->vma, from the emitted reloc addend,
1544 but ld.so expects buggy relocs. */
1545 osec = sec->output_section;
1546 indx = elf_section_data (osec)->dynindx;
1549 struct elf_link_hash_table *htab;
1550 htab = elf_hash_table (info);
1551 osec = htab->text_index_section;
1552 indx = elf_section_data (osec)->dynindx;
1554 BFD_ASSERT (indx != 0);
1557 outrel.r_info = ELF32_R_INFO (indx, r_type);
1558 outrel.r_addend = relocation + rel->r_addend;
1562 if ((input_section->flags & SEC_CODE) != 0
1563 || (ELF32_R_TYPE (outrel.r_info) != R_VAX_32
1564 && ELF32_R_TYPE (outrel.r_info) != R_VAX_RELATIVE
1565 && ELF32_R_TYPE (outrel.r_info) != R_VAX_COPY
1566 && ELF32_R_TYPE (outrel.r_info) != R_VAX_JMP_SLOT
1567 && ELF32_R_TYPE (outrel.r_info) != R_VAX_GLOB_DAT))
1571 /* xgettext:c-format */
1572 (_("%pB: warning: %s relocation against symbol `%s'"
1573 " from %pA section"),
1574 input_bfd, howto->name, h->root.root.string,
1578 /* xgettext:c-format */
1579 (_("%pB: warning: %s relocation to %#" PRIx64
1580 " from %pA section"),
1581 input_bfd, howto->name, (uint64_t) outrel.r_addend,
1584 loc = sreloc->contents;
1585 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1586 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1588 /* This reloc will be computed at runtime, so there's no
1589 need to do anything now, except for R_VAX_32
1590 relocations that have been turned into
1598 case R_VAX_GNU_VTINHERIT:
1599 case R_VAX_GNU_VTENTRY:
1600 /* These are no-ops in the end. */
1607 /* VAX PCREL relocations are from the end of relocation, not the start.
1608 So subtract the difference from the relocation amount since we can't
1609 add it to the offset. */
1610 if (howto->pc_relative && howto->pcrel_offset)
1611 relocation -= bfd_get_reloc_size(howto);
1613 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1614 contents, rel->r_offset,
1615 relocation, rel->r_addend);
1617 if (r != bfd_reloc_ok)
1622 case bfd_reloc_outofrange:
1624 case bfd_reloc_overflow:
1632 name = bfd_elf_string_from_elf_section (input_bfd,
1633 symtab_hdr->sh_link,
1638 name = bfd_section_name (input_bfd, sec);
1640 info->callbacks->reloc_overflow
1641 (info, (h ? &h->root : NULL), name, howto->name,
1642 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1652 /* Finish up dynamic symbol handling. We set the contents of various
1653 dynamic sections here. */
1656 elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
1657 struct elf_link_hash_entry *h,
1658 Elf_Internal_Sym *sym)
1662 dynobj = elf_hash_table (info)->dynobj;
1664 if (h->plt.offset != (bfd_vma) -1)
1672 Elf_Internal_Rela rela;
1675 /* This symbol has an entry in the procedure linkage table. Set
1677 BFD_ASSERT (h->dynindx != -1);
1679 splt = elf_hash_table (info)->splt;
1680 sgot = elf_hash_table (info)->sgotplt;
1681 srela = elf_hash_table (info)->srelplt;
1682 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1684 addend = 2 * (h->plt.offset & 1);
1685 h->plt.offset &= ~1;
1687 /* Get the index in the procedure linkage table which
1688 corresponds to this symbol. This is the index of this symbol
1689 in all the symbols for which we are making plt entries. The
1690 first entry in the procedure linkage table is reserved. */
1691 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1693 /* Get the offset into the .got table of the entry that
1694 corresponds to this function. Each .got entry is 4 bytes.
1695 The first two are reserved. */
1696 got_offset = (plt_index + 3) * 4;
1698 /* Fill in the entry in the procedure linkage table. */
1699 memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry,
1702 /* The offset is relative to the first extension word. */
1703 bfd_put_32 (output_bfd,
1704 -(h->plt.offset + 8),
1705 splt->contents + h->plt.offset + 4);
1707 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
1708 splt->contents + h->plt.offset + 8);
1710 /* Fill in the entry in the global offset table. */
1711 bfd_put_32 (output_bfd,
1712 (splt->output_section->vma
1713 + splt->output_offset
1714 + h->plt.offset) + addend,
1715 sgot->contents + got_offset);
1717 /* Fill in the entry in the .rela.plt section. */
1718 rela.r_offset = (sgot->output_section->vma
1719 + sgot->output_offset
1721 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT);
1722 rela.r_addend = addend;
1723 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
1724 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1726 if (!h->def_regular)
1728 /* Mark the symbol as undefined, rather than as defined in
1729 the .plt section. Leave the value alone. */
1730 sym->st_shndx = SHN_UNDEF;
1734 if (h->got.offset != (bfd_vma) -1)
1738 Elf_Internal_Rela rela;
1741 /* This symbol has an entry in the global offset table. Set it
1743 sgot = elf_hash_table (info)->sgot;
1744 srela = elf_hash_table (info)->srelgot;
1745 BFD_ASSERT (sgot != NULL && srela != NULL);
1747 rela.r_offset = (sgot->output_section->vma
1748 + sgot->output_offset
1750 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT);
1751 rela.r_addend = bfd_get_signed_32 (output_bfd,
1752 sgot->contents + h->got.offset);
1754 loc = srela->contents;
1755 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1756 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1762 Elf_Internal_Rela rela;
1765 /* This symbol needs a copy reloc. Set it up. */
1766 BFD_ASSERT (h->dynindx != -1
1767 && (h->root.type == bfd_link_hash_defined
1768 || h->root.type == bfd_link_hash_defweak));
1770 s = bfd_get_linker_section (dynobj, ".rela.bss");
1771 BFD_ASSERT (s != NULL);
1773 rela.r_offset = (h->root.u.def.value
1774 + h->root.u.def.section->output_section->vma
1775 + h->root.u.def.section->output_offset);
1776 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY);
1778 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1779 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1782 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1783 if (h == elf_hash_table (info)->hdynamic
1784 || h == elf_hash_table (info)->hgot)
1785 sym->st_shndx = SHN_ABS;
1790 /* Finish up the dynamic sections. */
1793 elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1799 dynobj = elf_hash_table (info)->dynobj;
1801 sgot = elf_hash_table (info)->sgotplt;
1802 BFD_ASSERT (sgot != NULL);
1803 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
1805 if (elf_hash_table (info)->dynamic_sections_created)
1808 Elf32_External_Dyn *dyncon, *dynconend;
1810 splt = elf_hash_table (info)->splt;
1811 BFD_ASSERT (splt != NULL && sdyn != NULL);
1813 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1814 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1815 for (; dyncon < dynconend; dyncon++)
1817 Elf_Internal_Dyn dyn;
1820 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1828 s = elf_hash_table (info)->sgotplt;
1831 s = elf_hash_table (info)->srelplt;
1833 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
1834 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1838 s = elf_hash_table (info)->srelplt;
1839 dyn.d_un.d_val = s->size;
1840 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1845 /* Fill in the first entry in the procedure linkage table. */
1848 memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE);
1849 bfd_put_32 (output_bfd,
1850 (sgot->output_section->vma
1851 + sgot->output_offset + 4
1852 - (splt->output_section->vma + 6)),
1853 splt->contents + 2);
1854 bfd_put_32 (output_bfd,
1855 (sgot->output_section->vma
1856 + sgot->output_offset + 8
1857 - (splt->output_section->vma + 12)),
1858 splt->contents + 8);
1859 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1864 /* Fill in the first three entries in the global offset table. */
1868 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1870 bfd_put_32 (output_bfd,
1871 sdyn->output_section->vma + sdyn->output_offset,
1873 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1874 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1877 if (elf_section_data (sgot->output_section) != NULL)
1878 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1883 static enum elf_reloc_type_class
1884 elf_vax_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1885 const asection *rel_sec ATTRIBUTE_UNUSED,
1886 const Elf_Internal_Rela *rela)
1888 switch ((int) ELF32_R_TYPE (rela->r_info))
1890 case R_VAX_RELATIVE:
1891 return reloc_class_relative;
1892 case R_VAX_JMP_SLOT:
1893 return reloc_class_plt;
1895 return reloc_class_copy;
1897 return reloc_class_normal;
1902 elf_vax_plt_sym_val (bfd_vma i, const asection *plt,
1903 const arelent *rel ATTRIBUTE_UNUSED)
1905 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
1908 #define TARGET_LITTLE_SYM vax_elf32_vec
1909 #define TARGET_LITTLE_NAME "elf32-vax"
1910 #define ELF_MACHINE_CODE EM_VAX
1911 #define ELF_MAXPAGESIZE 0x1000
1913 #define elf_backend_create_dynamic_sections \
1914 _bfd_elf_create_dynamic_sections
1915 #define bfd_elf32_bfd_link_hash_table_create \
1916 elf_vax_link_hash_table_create
1917 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
1919 #define elf_backend_check_relocs elf_vax_check_relocs
1920 #define elf_backend_adjust_dynamic_symbol \
1921 elf_vax_adjust_dynamic_symbol
1922 #define elf_backend_always_size_sections \
1923 elf_vax_always_size_sections
1924 #define elf_backend_size_dynamic_sections \
1925 elf_vax_size_dynamic_sections
1926 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
1927 #define elf_backend_relocate_section elf_vax_relocate_section
1928 #define elf_backend_finish_dynamic_symbol \
1929 elf_vax_finish_dynamic_symbol
1930 #define elf_backend_finish_dynamic_sections \
1931 elf_vax_finish_dynamic_sections
1932 #define elf_backend_reloc_type_class elf_vax_reloc_type_class
1933 #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook
1934 #define elf_backend_plt_sym_val elf_vax_plt_sym_val
1935 #define bfd_elf32_bfd_merge_private_bfd_data \
1936 elf32_vax_merge_private_bfd_data
1937 #define bfd_elf32_bfd_set_private_flags \
1938 elf32_vax_set_private_flags
1939 #define bfd_elf32_bfd_print_private_bfd_data \
1940 elf32_vax_print_private_bfd_data
1942 #define elf_backend_can_gc_sections 1
1943 #define elf_backend_want_got_plt 1
1944 #define elf_backend_plt_readonly 1
1945 #define elf_backend_want_plt_sym 0
1946 #define elf_backend_got_header_size 16
1947 #define elf_backend_rela_normal 1
1948 #define elf_backend_dtrel_excludes_plt 1
1950 #include "elf32-target.h"