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* archive.c (_bfd_archive_close_and_cleanup): Clear parent
[binutils-gdb.git] / bfd / elf32-vax.c
1 /* VAX series support for 32-bit ELF
2 Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5 Contributed by Matt Thomas <matt@3am-software.com>.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "elf-bfd.h"
29 #include "elf/vax.h"
30
31 static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
32 static void rtype_to_howto (bfd *, arelent *, Elf_Internal_Rela *);
33 static struct bfd_hash_entry *elf_vax_link_hash_newfunc (struct bfd_hash_entry *,
34 struct bfd_hash_table *,
35 const char *);
36 static struct bfd_link_hash_table *elf_vax_link_hash_table_create (bfd *);
37 static bfd_boolean elf_vax_check_relocs (bfd *, struct bfd_link_info *,
38 asection *, const Elf_Internal_Rela *);
39 static bfd_boolean elf_vax_adjust_dynamic_symbol (struct bfd_link_info *,
40 struct elf_link_hash_entry *);
41 static bfd_boolean elf_vax_size_dynamic_sections (bfd *, struct bfd_link_info *);
42 static bfd_boolean elf_vax_relocate_section (bfd *, struct bfd_link_info *,
43 bfd *, asection *, bfd_byte *,
44 Elf_Internal_Rela *,
45 Elf_Internal_Sym *, asection **);
46 static bfd_boolean elf_vax_finish_dynamic_symbol (bfd *, struct bfd_link_info *,
47 struct elf_link_hash_entry *,
48 Elf_Internal_Sym *);
49 static bfd_boolean elf_vax_finish_dynamic_sections (bfd *,
50 struct bfd_link_info *);
51 static bfd_vma elf_vax_plt_sym_val (bfd_vma, const asection *,
52 const arelent *);
53
54 static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword);
55 static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *);
56 static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, void *);
57
58 static reloc_howto_type howto_table[] = {
59 HOWTO (R_VAX_NONE, /* type */
60 0, /* rightshift */
61 0, /* size (0 = byte, 1 = short, 2 = long) */
62 0, /* bitsize */
63 FALSE, /* pc_relative */
64 0, /* bitpos */
65 complain_overflow_dont, /* complain_on_overflow */
66 bfd_elf_generic_reloc, /* special_function */
67 "R_VAX_NONE", /* name */
68 FALSE, /* partial_inplace */
69 0, /* src_mask */
70 0x00000000, /* dst_mask */
71 FALSE), /* pcrel_offset */
72
73 HOWTO (R_VAX_32, /* type */
74 0, /* rightshift */
75 2, /* size (0 = byte, 1 = short, 2 = long) */
76 32, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_bitfield, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_VAX_32", /* name */
82 FALSE, /* partial_inplace */
83 0, /* src_mask */
84 0xffffffff, /* dst_mask */
85 FALSE), /* pcrel_offset */
86
87 HOWTO (R_VAX_16, /* type */
88 0, /* rightshift */
89 1, /* size (0 = byte, 1 = short, 2 = long) */
90 16, /* bitsize */
91 FALSE, /* pc_relative */
92 0, /* bitpos */
93 complain_overflow_bitfield, /* complain_on_overflow */
94 bfd_elf_generic_reloc, /* special_function */
95 "R_VAX_16", /* name */
96 FALSE, /* partial_inplace */
97 0, /* src_mask */
98 0x0000ffff, /* dst_mask */
99 FALSE), /* pcrel_offset */
100
101 HOWTO (R_VAX_8, /* type */
102 0, /* rightshift */
103 0, /* size (0 = byte, 1 = short, 2 = long) */
104 8, /* bitsize */
105 FALSE, /* pc_relative */
106 0, /* bitpos */
107 complain_overflow_bitfield, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_VAX_8", /* name */
110 FALSE, /* partial_inplace */
111 0, /* src_mask */
112 0x000000ff, /* dst_mask */
113 FALSE), /* pcrel_offset */
114
115 HOWTO (R_VAX_PC32, /* type */
116 0, /* rightshift */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
118 32, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_VAX_PC32", /* name */
124 FALSE, /* partial_inplace */
125 0, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
129 HOWTO (R_VAX_PC16, /* type */
130 0, /* rightshift */
131 1, /* size (0 = byte, 1 = short, 2 = long) */
132 16, /* bitsize */
133 TRUE, /* pc_relative */
134 0, /* bitpos */
135 complain_overflow_signed, /* complain_on_overflow */
136 bfd_elf_generic_reloc, /* special_function */
137 "R_VAX_PC16", /* name */
138 FALSE, /* partial_inplace */
139 0, /* src_mask */
140 0x0000ffff, /* dst_mask */
141 TRUE), /* pcrel_offset */
142
143 HOWTO (R_VAX_PC8, /* type */
144 0, /* rightshift */
145 0, /* size (0 = byte, 1 = short, 2 = long) */
146 8, /* bitsize */
147 TRUE, /* pc_relative */
148 0, /* bitpos */
149 complain_overflow_signed, /* complain_on_overflow */
150 bfd_elf_generic_reloc, /* special_function */
151 "R_VAX_PC8", /* name */
152 FALSE, /* partial_inplace */
153 0, /* src_mask */
154 0x000000ff, /* dst_mask */
155 TRUE), /* pcrel_offset */
156
157 HOWTO (R_VAX_GOT32, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 32, /* bitsize */
161 TRUE, /* pc_relative */
162 0, /* bitpos */
163 complain_overflow_bitfield, /* complain_on_overflow */
164 bfd_elf_generic_reloc, /* special_function */
165 "R_VAX_GOT32", /* name */
166 FALSE, /* partial_inplace */
167 0, /* src_mask */
168 0xffffffff, /* dst_mask */
169 TRUE), /* pcrel_offset */
170
171 EMPTY_HOWTO (-1),
172 EMPTY_HOWTO (-1),
173 EMPTY_HOWTO (-1),
174 EMPTY_HOWTO (-1),
175 EMPTY_HOWTO (-1),
176
177 HOWTO (R_VAX_PLT32, /* type */
178 0, /* rightshift */
179 2, /* size (0 = byte, 1 = short, 2 = long) */
180 32, /* bitsize */
181 TRUE, /* pc_relative */
182 0, /* bitpos */
183 complain_overflow_bitfield, /* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_VAX_PLT32", /* name */
186 FALSE, /* partial_inplace */
187 0, /* src_mask */
188 0xffffffff, /* dst_mask */
189 TRUE), /* pcrel_offset */
190
191 EMPTY_HOWTO (-1),
192 EMPTY_HOWTO (-1),
193 EMPTY_HOWTO (-1),
194 EMPTY_HOWTO (-1),
195 EMPTY_HOWTO (-1),
196
197 HOWTO (R_VAX_COPY, /* type */
198 0, /* rightshift */
199 0, /* size (0 = byte, 1 = short, 2 = long) */
200 0, /* bitsize */
201 FALSE, /* pc_relative */
202 0, /* bitpos */
203 complain_overflow_dont, /* complain_on_overflow */
204 bfd_elf_generic_reloc, /* special_function */
205 "R_VAX_COPY", /* name */
206 FALSE, /* partial_inplace */
207 0, /* src_mask */
208 0xffffffff, /* dst_mask */
209 FALSE), /* pcrel_offset */
210
211 HOWTO (R_VAX_GLOB_DAT, /* type */
212 0, /* rightshift */
213 2, /* size (0 = byte, 1 = short, 2 = long) */
214 32, /* bitsize */
215 FALSE, /* pc_relative */
216 0, /* bitpos */
217 complain_overflow_dont, /* complain_on_overflow */
218 bfd_elf_generic_reloc, /* special_function */
219 "R_VAX_GLOB_DAT", /* name */
220 FALSE, /* partial_inplace */
221 0, /* src_mask */
222 0xffffffff, /* dst_mask */
223 FALSE), /* pcrel_offset */
224
225 HOWTO (R_VAX_JMP_SLOT, /* type */
226 0, /* rightshift */
227 2, /* size (0 = byte, 1 = short, 2 = long) */
228 32, /* bitsize */
229 FALSE, /* pc_relative */
230 0, /* bitpos */
231 complain_overflow_dont, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_VAX_JMP_SLOT", /* name */
234 FALSE, /* partial_inplace */
235 0, /* src_mask */
236 0xffffffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
238
239 HOWTO (R_VAX_RELATIVE, /* type */
240 0, /* rightshift */
241 2, /* size (0 = byte, 1 = short, 2 = long) */
242 32, /* bitsize */
243 FALSE, /* pc_relative */
244 0, /* bitpos */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_VAX_RELATIVE", /* name */
248 FALSE, /* partial_inplace */
249 0, /* src_mask */
250 0xffffffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
252
253 /* GNU extension to record C++ vtable hierarchy */
254 HOWTO (R_VAX_GNU_VTINHERIT, /* type */
255 0, /* rightshift */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
257 0, /* bitsize */
258 FALSE, /* pc_relative */
259 0, /* bitpos */
260 complain_overflow_dont, /* complain_on_overflow */
261 NULL, /* special_function */
262 "R_VAX_GNU_VTINHERIT", /* name */
263 FALSE, /* partial_inplace */
264 0, /* src_mask */
265 0, /* dst_mask */
266 FALSE), /* pcrel_offset */
267
268 /* GNU extension to record C++ vtable member usage */
269 HOWTO (R_VAX_GNU_VTENTRY, /* type */
270 0, /* rightshift */
271 2, /* size (0 = byte, 1 = short, 2 = long) */
272 0, /* bitsize */
273 FALSE, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_dont, /* complain_on_overflow */
276 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
277 "R_VAX_GNU_VTENTRY", /* name */
278 FALSE, /* partial_inplace */
279 0, /* src_mask */
280 0, /* dst_mask */
281 FALSE), /* pcrel_offset */
282 };
283
284 static void
285 rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
286 Elf_Internal_Rela *dst)
287 {
288 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_VAX_max);
289 cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)];
290 }
291
292 #define elf_info_to_howto rtype_to_howto
293
294 static const struct
295 {
296 bfd_reloc_code_real_type bfd_val;
297 int elf_val;
298 } reloc_map[] = {
299 { BFD_RELOC_NONE, R_VAX_NONE },
300 { BFD_RELOC_32, R_VAX_32 },
301 { BFD_RELOC_16, R_VAX_16 },
302 { BFD_RELOC_8, R_VAX_8 },
303 { BFD_RELOC_32_PCREL, R_VAX_PC32 },
304 { BFD_RELOC_16_PCREL, R_VAX_PC16 },
305 { BFD_RELOC_8_PCREL, R_VAX_PC8 },
306 { BFD_RELOC_32_GOT_PCREL, R_VAX_GOT32 },
307 { BFD_RELOC_32_PLT_PCREL, R_VAX_PLT32 },
308 { BFD_RELOC_NONE, R_VAX_COPY },
309 { BFD_RELOC_VAX_GLOB_DAT, R_VAX_GLOB_DAT },
310 { BFD_RELOC_VAX_JMP_SLOT, R_VAX_JMP_SLOT },
311 { BFD_RELOC_VAX_RELATIVE, R_VAX_RELATIVE },
312 { BFD_RELOC_CTOR, R_VAX_32 },
313 { BFD_RELOC_VTABLE_INHERIT, R_VAX_GNU_VTINHERIT },
314 { BFD_RELOC_VTABLE_ENTRY, R_VAX_GNU_VTENTRY },
315 };
316
317 static reloc_howto_type *
318 reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
319 {
320 unsigned int i;
321 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
322 {
323 if (reloc_map[i].bfd_val == code)
324 return &howto_table[reloc_map[i].elf_val];
325 }
326 return 0;
327 }
328
329 static reloc_howto_type *
330 reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
331 const char *r_name)
332 {
333 unsigned int i;
334
335 for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
336 if (howto_table[i].name != NULL
337 && strcasecmp (howto_table[i].name, r_name) == 0)
338 return &howto_table[i];
339
340 return NULL;
341 }
342
343 #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
344 #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
345 #define ELF_ARCH bfd_arch_vax
346 /* end code generated by elf.el */
347 \f
348 /* Functions for the VAX ELF linker. */
349
350 /* The name of the dynamic interpreter. This is put in the .interp
351 section. */
352
353 #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so"
354
355 /* The size in bytes of an entry in the procedure linkage table. */
356
357 #define PLT_ENTRY_SIZE 12
358
359 /* The first entry in a procedure linkage table looks like this. See
360 the SVR4 ABI VAX supplement to see how this works. */
361
362 static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] =
363 {
364 0xdd, 0xef, /* pushl l^ */
365 0, 0, 0, 0, /* offset to .plt.got + 4 */
366 0x17, 0xff, /* jmp @L^(pc) */
367 0, 0, 0, 0, /* offset to .plt.got + 8 */
368 };
369
370 /* Subsequent entries in a procedure linkage table look like this. */
371
372 static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] =
373 {
374 0xfc, 0x0f, /* .word ^M<r11:r2> */
375 0x16, 0xef, /* jsb L^(pc) */
376 0, 0, 0, 0, /* replaced with offset to start of .plt */
377 0, 0, 0, 0, /* index into .rela.plt */
378 };
379
380 /* The VAX linker needs to keep track of the number of relocs that it
381 decides to copy in check_relocs for each symbol. This is so that it
382 can discard PC relative relocs if it doesn't need them when linking
383 with -Bsymbolic. We store the information in a field extending the
384 regular ELF linker hash table. */
385
386 /* This structure keeps track of the number of PC relative relocs we have
387 copied for a given symbol. */
388
389 struct elf_vax_pcrel_relocs_copied
390 {
391 /* Next section. */
392 struct elf_vax_pcrel_relocs_copied *next;
393 /* A section in dynobj. */
394 asection *section;
395 /* Number of relocs copied in this section. */
396 bfd_size_type count;
397 };
398
399 /* VAX ELF linker hash entry. */
400
401 struct elf_vax_link_hash_entry
402 {
403 struct elf_link_hash_entry root;
404
405 /* Number of PC relative relocs copied for this symbol. */
406 struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied;
407
408 bfd_vma got_addend;
409 };
410
411 /* Declare this now that the above structures are defined. */
412
413 static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *,
414 void *);
415
416 /* Declare this now that the above structures are defined. */
417
418 static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *,
419 void *);
420
421 /* Traverse an VAX ELF linker hash table. */
422
423 #define elf_vax_link_hash_traverse(table, func, info) \
424 (elf_link_hash_traverse \
425 ((table), \
426 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
427 (info)))
428
429 /* Create an entry in an VAX ELF linker hash table. */
430
431 static struct bfd_hash_entry *
432 elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry,
433 struct bfd_hash_table *table,
434 const char *string)
435 {
436 struct elf_vax_link_hash_entry *ret =
437 (struct elf_vax_link_hash_entry *) entry;
438
439 /* Allocate the structure if it has not already been allocated by a
440 subclass. */
441 if (ret == NULL)
442 ret = ((struct elf_vax_link_hash_entry *)
443 bfd_hash_allocate (table,
444 sizeof (struct elf_vax_link_hash_entry)));
445 if (ret == NULL)
446 return (struct bfd_hash_entry *) ret;
447
448 /* Call the allocation method of the superclass. */
449 ret = ((struct elf_vax_link_hash_entry *)
450 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
451 table, string));
452 if (ret != NULL)
453 {
454 ret->pcrel_relocs_copied = NULL;
455 }
456
457 return (struct bfd_hash_entry *) ret;
458 }
459
460 /* Create an VAX ELF linker hash table. */
461
462 static struct bfd_link_hash_table *
463 elf_vax_link_hash_table_create (bfd *abfd)
464 {
465 struct elf_link_hash_table *ret;
466 bfd_size_type amt = sizeof (struct elf_link_hash_table);
467
468 ret = bfd_zmalloc (amt);
469 if (ret == NULL)
470 return NULL;
471
472 if (!_bfd_elf_link_hash_table_init (ret, abfd,
473 elf_vax_link_hash_newfunc,
474 sizeof (struct elf_vax_link_hash_entry),
475 GENERIC_ELF_DATA))
476 {
477 free (ret);
478 return NULL;
479 }
480
481 return &ret->root;
482 }
483
484 /* Keep vax-specific flags in the ELF header */
485 static bfd_boolean
486 elf32_vax_set_private_flags (bfd *abfd, flagword flags)
487 {
488 elf_elfheader (abfd)->e_flags = flags;
489 elf_flags_init (abfd) = TRUE;
490 return TRUE;
491 }
492
493 /* Merge backend specific data from an object file to the output
494 object file when linking. */
495 static bfd_boolean
496 elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
497 {
498 flagword in_flags;
499
500 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
501 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
502 return TRUE;
503
504 in_flags = elf_elfheader (ibfd)->e_flags;
505
506 if (!elf_flags_init (obfd))
507 {
508 elf_flags_init (obfd) = TRUE;
509 elf_elfheader (obfd)->e_flags = in_flags;
510 }
511
512 return TRUE;
513 }
514
515 /* Display the flags field */
516 static bfd_boolean
517 elf32_vax_print_private_bfd_data (bfd *abfd, void * ptr)
518 {
519 FILE *file = (FILE *) ptr;
520
521 BFD_ASSERT (abfd != NULL && ptr != NULL);
522
523 /* Print normal ELF private data. */
524 _bfd_elf_print_private_bfd_data (abfd, ptr);
525
526 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
527
528 /* xgettext:c-format */
529 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
530
531 if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC)
532 fprintf (file, _(" [nonpic]"));
533
534 if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT)
535 fprintf (file, _(" [d-float]"));
536
537 if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT)
538 fprintf (file, _(" [g-float]"));
539
540 fputc ('\n', file);
541
542 return TRUE;
543 }
544 /* Look through the relocs for a section during the first phase, and
545 allocate space in the global offset table or procedure linkage
546 table. */
547
548 static bfd_boolean
549 elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
550 const Elf_Internal_Rela *relocs)
551 {
552 bfd *dynobj;
553 Elf_Internal_Shdr *symtab_hdr;
554 struct elf_link_hash_entry **sym_hashes;
555 const Elf_Internal_Rela *rel;
556 const Elf_Internal_Rela *rel_end;
557 asection *sgot;
558 asection *srelgot;
559 asection *sreloc;
560
561 if (info->relocatable)
562 return TRUE;
563
564 dynobj = elf_hash_table (info)->dynobj;
565 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
566 sym_hashes = elf_sym_hashes (abfd);
567
568 sgot = NULL;
569 srelgot = NULL;
570 sreloc = NULL;
571
572 rel_end = relocs + sec->reloc_count;
573 for (rel = relocs; rel < rel_end; rel++)
574 {
575 unsigned long r_symndx;
576 struct elf_link_hash_entry *h;
577
578 r_symndx = ELF32_R_SYM (rel->r_info);
579
580 if (r_symndx < symtab_hdr->sh_info)
581 h = NULL;
582 else
583 {
584 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
585 while (h->root.type == bfd_link_hash_indirect
586 || h->root.type == bfd_link_hash_warning)
587 h = (struct elf_link_hash_entry *) h->root.u.i.link;
588
589 /* PR15323, ref flags aren't set for references in the same
590 object. */
591 h->root.non_ir_ref = 1;
592 }
593
594 switch (ELF32_R_TYPE (rel->r_info))
595 {
596 case R_VAX_GOT32:
597 BFD_ASSERT (h != NULL);
598 if (h->forced_local
599 || h == elf_hash_table (info)->hgot
600 || h == elf_hash_table (info)->hplt)
601 break;
602
603 /* If this is a local symbol, we resolve it directly without
604 creating a global offset table entry. */
605 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
606 break;
607
608 /* This symbol requires a global offset table entry. */
609
610 if (dynobj == NULL)
611 {
612 /* Create the .got section. */
613 elf_hash_table (info)->dynobj = dynobj = abfd;
614 if (!_bfd_elf_create_got_section (dynobj, info))
615 return FALSE;
616 }
617
618 if (sgot == NULL)
619 {
620 sgot = bfd_get_linker_section (dynobj, ".got");
621 BFD_ASSERT (sgot != NULL);
622 }
623
624 if (srelgot == NULL
625 && (h != NULL || info->shared))
626 {
627 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
628 if (srelgot == NULL)
629 {
630 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
631 | SEC_IN_MEMORY | SEC_LINKER_CREATED
632 | SEC_READONLY);
633
634 srelgot = bfd_make_section_anyway_with_flags (dynobj,
635 ".rela.got",
636 flags);
637 if (srelgot == NULL
638 || !bfd_set_section_alignment (dynobj, srelgot, 2))
639 return FALSE;
640 }
641 }
642
643 if (h != NULL)
644 {
645 struct elf_vax_link_hash_entry *eh;
646
647 eh = (struct elf_vax_link_hash_entry *) h;
648 if (h->got.refcount == -1)
649 {
650 h->got.refcount = 1;
651 eh->got_addend = rel->r_addend;
652 }
653 else
654 {
655 h->got.refcount++;
656 if (eh->got_addend != (bfd_vma) rel->r_addend)
657 (*_bfd_error_handler)
658 (_("%s: warning: GOT addend of %ld to `%s' does"
659 " not match previous GOT addend of %ld"),
660 bfd_get_filename (abfd), rel->r_addend,
661 h->root.root.string,
662 eh->got_addend);
663
664 }
665 }
666 break;
667
668 case R_VAX_PLT32:
669 /* This symbol requires a procedure linkage table entry. We
670 actually build the entry in adjust_dynamic_symbol,
671 because this might be a case of linking PIC code which is
672 never referenced by a dynamic object, in which case we
673 don't need to generate a procedure linkage table entry
674 after all. */
675
676 /* If this is a local symbol, we resolve it directly without
677 creating a procedure linkage table entry. */
678 BFD_ASSERT (h != NULL);
679 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT || h->forced_local)
680 break;
681
682 h->needs_plt = 1;
683 if (h->plt.refcount == -1)
684 h->plt.refcount = 1;
685 else
686 h->plt.refcount++;
687 break;
688
689 case R_VAX_PC8:
690 case R_VAX_PC16:
691 case R_VAX_PC32:
692 /* If we are creating a shared library and this is not a local
693 symbol, we need to copy the reloc into the shared library.
694 However when linking with -Bsymbolic and this is a global
695 symbol which is defined in an object we are including in the
696 link (i.e., DEF_REGULAR is set), then we can resolve the
697 reloc directly. At this point we have not seen all the input
698 files, so it is possible that DEF_REGULAR is not set now but
699 will be set later (it is never cleared). We account for that
700 possibility below by storing information in the
701 pcrel_relocs_copied field of the hash table entry. */
702 if (!(info->shared
703 && (sec->flags & SEC_ALLOC) != 0
704 && h != NULL
705 && (!info->symbolic
706 || !h->def_regular)))
707 {
708 if (h != NULL
709 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
710 && !h->forced_local)
711 {
712 /* Make sure a plt entry is created for this symbol if
713 it turns out to be a function defined by a dynamic
714 object. */
715 if (h->plt.refcount == -1)
716 h->plt.refcount = 1;
717 else
718 h->plt.refcount++;
719 }
720 break;
721 }
722 /* If this is a local symbol, we can resolve it directly. */
723 if (h != NULL
724 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
725 || h->forced_local))
726 break;
727
728 /* Fall through. */
729 case R_VAX_8:
730 case R_VAX_16:
731 case R_VAX_32:
732 if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
733 {
734 /* Make sure a plt entry is created for this symbol if it
735 turns out to be a function defined by a dynamic object. */
736 if (h->plt.refcount == -1)
737 h->plt.refcount = 1;
738 else
739 h->plt.refcount++;
740 }
741
742 /* If we are creating a shared library, we need to copy the
743 reloc into the shared library. */
744 if (info->shared
745 && (sec->flags & SEC_ALLOC) != 0)
746 {
747 /* When creating a shared object, we must copy these
748 reloc types into the output file. We create a reloc
749 section in dynobj and make room for this reloc. */
750 if (sreloc == NULL)
751 {
752 sreloc = _bfd_elf_make_dynamic_reloc_section
753 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
754
755 if (sreloc == NULL)
756 return FALSE;
757
758 if (sec->flags & SEC_READONLY)
759 info->flags |= DF_TEXTREL;
760 }
761
762 sreloc->size += sizeof (Elf32_External_Rela);
763
764 /* If we are linking with -Bsymbolic, we count the number of
765 PC relative relocations we have entered for this symbol,
766 so that we can discard them again if the symbol is later
767 defined by a regular object. Note that this function is
768 only called if we are using a vaxelf linker hash table,
769 which means that h is really a pointer to an
770 elf_vax_link_hash_entry. */
771 if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8
772 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16
773 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32)
774 && info->symbolic)
775 {
776 struct elf_vax_link_hash_entry *eh;
777 struct elf_vax_pcrel_relocs_copied *p;
778
779 eh = (struct elf_vax_link_hash_entry *) h;
780
781 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
782 if (p->section == sreloc)
783 break;
784
785 if (p == NULL)
786 {
787 p = ((struct elf_vax_pcrel_relocs_copied *)
788 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
789 if (p == NULL)
790 return FALSE;
791 p->next = eh->pcrel_relocs_copied;
792 eh->pcrel_relocs_copied = p;
793 p->section = sreloc;
794 p->count = 0;
795 }
796
797 ++p->count;
798 }
799 }
800
801 break;
802
803 /* This relocation describes the C++ object vtable hierarchy.
804 Reconstruct it for later use during GC. */
805 case R_VAX_GNU_VTINHERIT:
806 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
807 return FALSE;
808 break;
809
810 /* This relocation describes which C++ vtable entries are actually
811 used. Record for later use during GC. */
812 case R_VAX_GNU_VTENTRY:
813 BFD_ASSERT (h != NULL);
814 if (h != NULL
815 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
816 return FALSE;
817 break;
818
819 default:
820 break;
821 }
822 }
823
824 return TRUE;
825 }
826
827 /* Return the section that should be marked against GC for a given
828 relocation. */
829
830 static asection *
831 elf_vax_gc_mark_hook (asection *sec,
832 struct bfd_link_info *info,
833 Elf_Internal_Rela *rel,
834 struct elf_link_hash_entry *h,
835 Elf_Internal_Sym *sym)
836 {
837 if (h != NULL)
838 switch (ELF32_R_TYPE (rel->r_info))
839 {
840 case R_VAX_GNU_VTINHERIT:
841 case R_VAX_GNU_VTENTRY:
842 return NULL;
843 }
844
845 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
846 }
847
848 /* Update the got entry reference counts for the section being removed. */
849
850 static bfd_boolean
851 elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec,
852 const Elf_Internal_Rela *relocs)
853 {
854 Elf_Internal_Shdr *symtab_hdr;
855 struct elf_link_hash_entry **sym_hashes;
856 const Elf_Internal_Rela *rel, *relend;
857 bfd *dynobj;
858
859 if (info->relocatable)
860 return TRUE;
861
862 dynobj = elf_hash_table (info)->dynobj;
863 if (dynobj == NULL)
864 return TRUE;
865
866 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
867 sym_hashes = elf_sym_hashes (abfd);
868
869 relend = relocs + sec->reloc_count;
870 for (rel = relocs; rel < relend; rel++)
871 {
872 unsigned long r_symndx;
873 struct elf_link_hash_entry *h = NULL;
874
875 r_symndx = ELF32_R_SYM (rel->r_info);
876 if (r_symndx >= symtab_hdr->sh_info)
877 {
878 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
879 while (h->root.type == bfd_link_hash_indirect
880 || h->root.type == bfd_link_hash_warning)
881 h = (struct elf_link_hash_entry *) h->root.u.i.link;
882 }
883
884 switch (ELF32_R_TYPE (rel->r_info))
885 {
886 case R_VAX_GOT32:
887 if (h != NULL && h->got.refcount > 0)
888 --h->got.refcount;
889 break;
890
891 case R_VAX_PLT32:
892 case R_VAX_PC8:
893 case R_VAX_PC16:
894 case R_VAX_PC32:
895 case R_VAX_8:
896 case R_VAX_16:
897 case R_VAX_32:
898 if (h != NULL && h->plt.refcount > 0)
899 --h->plt.refcount;
900 break;
901
902 default:
903 break;
904 }
905 }
906
907 return TRUE;
908 }
909
910 /* Adjust a symbol defined by a dynamic object and referenced by a
911 regular object. The current definition is in some section of the
912 dynamic object, but we're not including those sections. We have to
913 change the definition to something the rest of the link can
914 understand. */
915
916 static bfd_boolean
917 elf_vax_adjust_dynamic_symbol (info, h)
918 struct bfd_link_info *info;
919 struct elf_link_hash_entry *h;
920 {
921 bfd *dynobj;
922 asection *s;
923
924 dynobj = elf_hash_table (info)->dynobj;
925
926 /* Make sure we know what is going on here. */
927 BFD_ASSERT (dynobj != NULL
928 && (h->needs_plt
929 || h->u.weakdef != NULL
930 || (h->def_dynamic
931 && h->ref_regular
932 && !h->def_regular)));
933
934 /* If this is a function, put it in the procedure linkage table. We
935 will fill in the contents of the procedure linkage table later,
936 when we know the address of the .got section. */
937 if (h->type == STT_FUNC
938 || h->needs_plt)
939 {
940 if (h->plt.refcount <= 0
941 || SYMBOL_CALLS_LOCAL (info, h)
942 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
943 && h->root.type == bfd_link_hash_undefweak))
944 {
945 /* This case can occur if we saw a PLTxx reloc in an input
946 file, but the symbol was never referred to by a dynamic
947 object, or if all references were garbage collected. In
948 such a case, we don't actually need to build a procedure
949 linkage table, and we can just do a PCxx reloc instead. */
950 h->plt.offset = (bfd_vma) -1;
951 h->needs_plt = 0;
952 return TRUE;
953 }
954
955 s = bfd_get_linker_section (dynobj, ".plt");
956 BFD_ASSERT (s != NULL);
957
958 /* If this is the first .plt entry, make room for the special
959 first entry. */
960 if (s->size == 0)
961 {
962 s->size += PLT_ENTRY_SIZE;
963 }
964
965 /* If this symbol is not defined in a regular file, and we are
966 not generating a shared library, then set the symbol to this
967 location in the .plt. This is required to make function
968 pointers compare as equal between the normal executable and
969 the shared library. */
970 if (!info->shared
971 && !h->def_regular)
972 {
973 h->root.u.def.section = s;
974 h->root.u.def.value = s->size;
975 }
976
977 h->plt.offset = s->size;
978
979 /* Make room for this entry. */
980 s->size += PLT_ENTRY_SIZE;
981
982 /* We also need to make an entry in the .got.plt section, which
983 will be placed in the .got section by the linker script. */
984
985 s = bfd_get_linker_section (dynobj, ".got.plt");
986 BFD_ASSERT (s != NULL);
987 s->size += 4;
988
989 /* We also need to make an entry in the .rela.plt section. */
990
991 s = bfd_get_linker_section (dynobj, ".rela.plt");
992 BFD_ASSERT (s != NULL);
993 s->size += sizeof (Elf32_External_Rela);
994
995 return TRUE;
996 }
997
998 /* Reinitialize the plt offset now that it is not used as a reference
999 count any more. */
1000 h->plt.offset = (bfd_vma) -1;
1001
1002 /* If this is a weak symbol, and there is a real definition, the
1003 processor independent code will have arranged for us to see the
1004 real definition first, and we can just use the same value. */
1005 if (h->u.weakdef != NULL)
1006 {
1007 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1008 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1009 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1010 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1011 return TRUE;
1012 }
1013
1014 /* This is a reference to a symbol defined by a dynamic object which
1015 is not a function. */
1016
1017 /* If we are creating a shared library, we must presume that the
1018 only references to the symbol are via the global offset table.
1019 For such cases we need not do anything here; the relocations will
1020 be handled correctly by relocate_section. */
1021 if (info->shared)
1022 return TRUE;
1023
1024 /* We must allocate the symbol in our .dynbss section, which will
1025 become part of the .bss section of the executable. There will be
1026 an entry for this symbol in the .dynsym section. The dynamic
1027 object will contain position independent code, so all references
1028 from the dynamic object to this symbol will go through the global
1029 offset table. The dynamic linker will use the .dynsym entry to
1030 determine the address it must put in the global offset table, so
1031 both the dynamic object and the regular object will refer to the
1032 same memory location for the variable. */
1033
1034 s = bfd_get_linker_section (dynobj, ".dynbss");
1035 BFD_ASSERT (s != NULL);
1036
1037 /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to
1038 copy the initial value out of the dynamic object and into the
1039 runtime process image. We need to remember the offset into the
1040 .rela.bss section we are going to use. */
1041 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1042 {
1043 asection *srel;
1044
1045 srel = bfd_get_linker_section (dynobj, ".rela.bss");
1046 BFD_ASSERT (srel != NULL);
1047 srel->size += sizeof (Elf32_External_Rela);
1048 h->needs_copy = 1;
1049 }
1050
1051 return _bfd_elf_adjust_dynamic_copy (h, s);
1052 }
1053
1054 /* Set the sizes of the dynamic sections. */
1055
1056 static bfd_boolean
1057 elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1058 {
1059 bfd *dynobj;
1060 asection *s;
1061 bfd_boolean plt;
1062 bfd_boolean relocs;
1063 bfd_boolean reltext;
1064
1065 dynobj = elf_hash_table (info)->dynobj;
1066 BFD_ASSERT (dynobj != NULL);
1067
1068 if (elf_hash_table (info)->dynamic_sections_created)
1069 {
1070 /* Set the contents of the .interp section to the interpreter. */
1071 if (info->executable)
1072 {
1073 s = bfd_get_linker_section (dynobj, ".interp");
1074 BFD_ASSERT (s != NULL);
1075 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1076 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1077 }
1078 }
1079 else
1080 {
1081 /* We may have created entries in the .rela.got and .got sections.
1082 However, if we are not creating the dynamic sections, we will
1083 not actually use these entries. Reset the size of .rela.got
1084 and .got, which will cause it to get stripped from the output
1085 file below. */
1086 s = bfd_get_linker_section (dynobj, ".rela.got");
1087 if (s != NULL)
1088 s->size = 0;
1089 s = bfd_get_linker_section (dynobj, ".got.plt");
1090 if (s != NULL)
1091 s->size = 0;
1092 s = bfd_get_linker_section (dynobj, ".got");
1093 if (s != NULL)
1094 s->size = 0;
1095 }
1096
1097 /* If this is a -Bsymbolic shared link, then we need to discard all PC
1098 relative relocs against symbols defined in a regular object. We
1099 allocated space for them in the check_relocs routine, but we will not
1100 fill them in in the relocate_section routine. */
1101 if (info->shared && info->symbolic)
1102 elf_vax_link_hash_traverse (elf_hash_table (info),
1103 elf_vax_discard_copies,
1104 NULL);
1105
1106 /* If this is a -Bsymbolic shared link or a static link, we need to
1107 discard all the got entries we've recorded. Otherwise, we need to
1108 instantiate (allocate space for them). */
1109 elf_link_hash_traverse (elf_hash_table (info),
1110 elf_vax_instantiate_got_entries,
1111 info);
1112
1113 /* The check_relocs and adjust_dynamic_symbol entry points have
1114 determined the sizes of the various dynamic sections. Allocate
1115 memory for them. */
1116 plt = FALSE;
1117 relocs = FALSE;
1118 reltext = FALSE;
1119 for (s = dynobj->sections; s != NULL; s = s->next)
1120 {
1121 const char *name;
1122
1123 if ((s->flags & SEC_LINKER_CREATED) == 0)
1124 continue;
1125
1126 /* It's OK to base decisions on the section name, because none
1127 of the dynobj section names depend upon the input files. */
1128 name = bfd_get_section_name (dynobj, s);
1129
1130 if (strcmp (name, ".plt") == 0)
1131 {
1132 /* Remember whether there is a PLT. */
1133 plt = s->size != 0;
1134 }
1135 else if (CONST_STRNEQ (name, ".rela"))
1136 {
1137 if (s->size != 0)
1138 {
1139 asection *target;
1140
1141 /* Remember whether there are any reloc sections other
1142 than .rela.plt. */
1143 if (strcmp (name, ".rela.plt") != 0)
1144 {
1145 const char *outname;
1146
1147 relocs = TRUE;
1148
1149 /* If this relocation section applies to a read only
1150 section, then we probably need a DT_TEXTREL
1151 entry. .rela.plt is actually associated with
1152 .got.plt, which is never readonly. */
1153 outname = bfd_get_section_name (output_bfd,
1154 s->output_section);
1155 target = bfd_get_section_by_name (output_bfd, outname + 5);
1156 if (target != NULL
1157 && (target->flags & SEC_READONLY) != 0
1158 && (target->flags & SEC_ALLOC) != 0)
1159 reltext = TRUE;
1160 }
1161
1162 /* We use the reloc_count field as a counter if we need
1163 to copy relocs into the output file. */
1164 s->reloc_count = 0;
1165 }
1166 }
1167 else if (! CONST_STRNEQ (name, ".got")
1168 && strcmp (name, ".dynbss") != 0)
1169 {
1170 /* It's not one of our sections, so don't allocate space. */
1171 continue;
1172 }
1173
1174 if (s->size == 0)
1175 {
1176 /* If we don't need this section, strip it from the
1177 output file. This is mostly to handle .rela.bss and
1178 .rela.plt. We must create both sections in
1179 create_dynamic_sections, because they must be created
1180 before the linker maps input sections to output
1181 sections. The linker does that before
1182 adjust_dynamic_symbol is called, and it is that
1183 function which decides whether anything needs to go
1184 into these sections. */
1185 s->flags |= SEC_EXCLUDE;
1186 continue;
1187 }
1188
1189 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1190 continue;
1191
1192 /* Allocate memory for the section contents. */
1193 s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size);
1194 if (s->contents == NULL)
1195 return FALSE;
1196 }
1197
1198 if (elf_hash_table (info)->dynamic_sections_created)
1199 {
1200 /* Add some entries to the .dynamic section. We fill in the
1201 values later, in elf_vax_finish_dynamic_sections, but we
1202 must add the entries now so that we get the correct size for
1203 the .dynamic section. The DT_DEBUG entry is filled in by the
1204 dynamic linker and used by the debugger. */
1205 #define add_dynamic_entry(TAG, VAL) \
1206 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1207
1208 if (!info->shared)
1209 {
1210 if (!add_dynamic_entry (DT_DEBUG, 0))
1211 return FALSE;
1212 }
1213
1214 if (plt)
1215 {
1216 if (!add_dynamic_entry (DT_PLTGOT, 0)
1217 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1218 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1219 || !add_dynamic_entry (DT_JMPREL, 0))
1220 return FALSE;
1221 }
1222
1223 if (relocs)
1224 {
1225 if (!add_dynamic_entry (DT_RELA, 0)
1226 || !add_dynamic_entry (DT_RELASZ, 0)
1227 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
1228 return FALSE;
1229 }
1230
1231 if (reltext || (info->flags & DF_TEXTREL) != 0)
1232 {
1233 if (!add_dynamic_entry (DT_TEXTREL, 0))
1234 return FALSE;
1235 }
1236 }
1237 #undef add_dynamic_entry
1238
1239 return TRUE;
1240 }
1241
1242 /* This function is called via elf_vax_link_hash_traverse if we are
1243 creating a shared object with -Bsymbolic. It discards the space
1244 allocated to copy PC relative relocs against symbols which are defined
1245 in regular objects. We allocated space for them in the check_relocs
1246 routine, but we won't fill them in in the relocate_section routine. */
1247
1248 static bfd_boolean
1249 elf_vax_discard_copies (struct elf_vax_link_hash_entry *h,
1250 void * ignore ATTRIBUTE_UNUSED)
1251 {
1252 struct elf_vax_pcrel_relocs_copied *s;
1253
1254 /* We only discard relocs for symbols defined in a regular object. */
1255 if (!h->root.def_regular)
1256 return TRUE;
1257
1258 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
1259 s->section->size -= s->count * sizeof (Elf32_External_Rela);
1260
1261 return TRUE;
1262 }
1263
1264 /* This function is called via elf_link_hash_traverse. It looks for entries
1265 that have GOT or PLT (.GOT) references. If creating a static object or a
1266 shared object with -Bsymbolic, it resets the reference count back to 0
1267 and sets the offset to -1 so normal PC32 relocation will be done. If
1268 creating a shared object or executable, space in the .got and .rela.got
1269 will be reserved for the symbol. */
1270
1271 static bfd_boolean
1272 elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, void * infoptr)
1273 {
1274 struct bfd_link_info *info = (struct bfd_link_info *) infoptr;
1275 bfd *dynobj;
1276 asection *sgot;
1277 asection *srelgot;
1278
1279 /* We don't care about non-GOT (and non-PLT) entries. */
1280 if (h->got.refcount <= 0 && h->plt.refcount <= 0)
1281 return TRUE;
1282
1283 dynobj = elf_hash_table (info)->dynobj;
1284 if (dynobj == NULL)
1285 return TRUE;
1286
1287 sgot = bfd_get_linker_section (dynobj, ".got");
1288 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1289
1290 if (!elf_hash_table (info)->dynamic_sections_created
1291 || (info->shared && info->symbolic)
1292 || h->forced_local)
1293 {
1294 h->got.refcount = 0;
1295 h->got.offset = (bfd_vma) -1;
1296 h->plt.refcount = 0;
1297 h->plt.offset = (bfd_vma) -1;
1298 }
1299 else if (h->got.refcount > 0)
1300 {
1301 bfd_boolean dyn;
1302
1303 /* Make sure this symbol is output as a dynamic symbol. */
1304 if (h->dynindx == -1)
1305 {
1306 if (!bfd_elf_link_record_dynamic_symbol (info, h))
1307 return FALSE;
1308 }
1309
1310 dyn = elf_hash_table (info)->dynamic_sections_created;
1311 /* Allocate space in the .got and .rela.got sections. */
1312 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1313 && (info->shared
1314 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1315 {
1316 sgot->size += 4;
1317 srelgot->size += sizeof (Elf32_External_Rela);
1318 }
1319 }
1320
1321 return TRUE;
1322 }
1323
1324 /* Relocate an VAX ELF section. */
1325
1326 static bfd_boolean
1327 elf_vax_relocate_section (bfd *output_bfd,
1328 struct bfd_link_info *info,
1329 bfd *input_bfd,
1330 asection *input_section,
1331 bfd_byte *contents,
1332 Elf_Internal_Rela *relocs,
1333 Elf_Internal_Sym *local_syms,
1334 asection **local_sections)
1335 {
1336 bfd *dynobj;
1337 Elf_Internal_Shdr *symtab_hdr;
1338 struct elf_link_hash_entry **sym_hashes;
1339 bfd_vma plt_index;
1340 bfd_vma got_offset;
1341 asection *sgot;
1342 asection *splt;
1343 asection *sgotplt;
1344 asection *sreloc;
1345 Elf_Internal_Rela *rel;
1346 Elf_Internal_Rela *relend;
1347
1348 dynobj = elf_hash_table (info)->dynobj;
1349 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1350 sym_hashes = elf_sym_hashes (input_bfd);
1351
1352 sgot = NULL;
1353 splt = NULL;
1354 sgotplt = NULL;
1355 sreloc = NULL;
1356
1357 rel = relocs;
1358 relend = relocs + input_section->reloc_count;
1359 for (; rel < relend; rel++)
1360 {
1361 int r_type;
1362 reloc_howto_type *howto;
1363 unsigned long r_symndx;
1364 struct elf_link_hash_entry *h;
1365 Elf_Internal_Sym *sym;
1366 asection *sec;
1367 bfd_vma relocation;
1368 bfd_reloc_status_type r;
1369
1370 r_type = ELF32_R_TYPE (rel->r_info);
1371 if (r_type < 0 || r_type >= (int) R_VAX_max)
1372 {
1373 bfd_set_error (bfd_error_bad_value);
1374 return FALSE;
1375 }
1376 howto = howto_table + r_type;
1377
1378 r_symndx = ELF32_R_SYM (rel->r_info);
1379 h = NULL;
1380 sym = NULL;
1381 sec = NULL;
1382 if (r_symndx < symtab_hdr->sh_info)
1383 {
1384 sym = local_syms + r_symndx;
1385 sec = local_sections[r_symndx];
1386 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1387 }
1388 else
1389 {
1390 bfd_boolean unresolved_reloc;
1391 bfd_boolean warned;
1392
1393 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1394 r_symndx, symtab_hdr, sym_hashes,
1395 h, sec, relocation,
1396 unresolved_reloc, warned);
1397
1398 if ((h->root.type == bfd_link_hash_defined
1399 || h->root.type == bfd_link_hash_defweak)
1400 && ((r_type == R_VAX_PLT32
1401 && h->plt.offset != (bfd_vma) -1
1402 && !h->forced_local
1403 && elf_hash_table (info)->dynamic_sections_created)
1404 || (r_type == R_VAX_GOT32
1405 && h->got.offset != (bfd_vma) -1
1406 && !h->forced_local
1407 && elf_hash_table (info)->dynamic_sections_created
1408 && (! info->shared
1409 || (! info->symbolic && h->dynindx != -1)
1410 || !h->def_regular))
1411 || (info->shared
1412 && ((! info->symbolic && h->dynindx != -1)
1413 || !h->def_regular)
1414 && ((input_section->flags & SEC_ALLOC) != 0
1415 /* DWARF will emit R_VAX_32 relocations in its
1416 sections against symbols defined externally
1417 in shared libraries. We can't do anything
1418 with them here. */
1419
1420 || ((input_section->flags & SEC_DEBUGGING) != 0
1421 && h->def_dynamic))
1422 && (r_type == R_VAX_8
1423 || r_type == R_VAX_16
1424 || r_type == R_VAX_32))))
1425 /* In these cases, we don't need the relocation
1426 value. We check specially because in some
1427 obscure cases sec->output_section will be NULL. */
1428 relocation = 0;
1429 }
1430
1431 if (sec != NULL && discarded_section (sec))
1432 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1433 rel, 1, relend, howto, 0, contents);
1434
1435 if (info->relocatable)
1436 continue;
1437
1438 switch (r_type)
1439 {
1440 case R_VAX_GOT32:
1441 /* Relocation is to the address of the entry for this symbol
1442 in the global offset table. */
1443 if (h == NULL
1444 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1445 || h->got.offset == (bfd_vma) -1
1446 || h->forced_local)
1447 break;
1448
1449 /* Relocation is the offset of the entry for this symbol in
1450 the global offset table. */
1451
1452 {
1453 bfd_boolean dyn;
1454 bfd_vma off;
1455
1456 if (sgot == NULL)
1457 {
1458 sgot = bfd_get_linker_section (dynobj, ".got");
1459 BFD_ASSERT (sgot != NULL);
1460 }
1461
1462 BFD_ASSERT (h != NULL);
1463 off = h->got.offset;
1464 BFD_ASSERT (off != (bfd_vma) -1);
1465 BFD_ASSERT (off < sgot->size);
1466
1467 dyn = elf_hash_table (info)->dynamic_sections_created;
1468 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
1469 || (info->shared
1470 && SYMBOL_REFERENCES_LOCAL (info, h)))
1471 {
1472 /* The symbol was forced to be local
1473 because of a version file.. We must initialize
1474 this entry in the global offset table. Since
1475 the offset must always be a multiple of 4, we
1476 use the least significant bit to record whether
1477 we have initialized it already.
1478
1479 When doing a dynamic link, we create a .rela.got
1480 relocation entry to initialize the value. This
1481 is done in the finish_dynamic_symbol routine. */
1482 if ((off & 1) != 0)
1483 off &= ~1;
1484 else
1485 {
1486 bfd_put_32 (output_bfd, relocation + rel->r_addend,
1487 sgot->contents + off);
1488 h->got.offset |= 1;
1489 }
1490 } else {
1491 bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off);
1492 }
1493
1494 relocation = sgot->output_offset + off;
1495 /* The GOT relocation uses the addend. */
1496 rel->r_addend = 0;
1497
1498 /* Change the reference to be indirect. */
1499 contents[rel->r_offset - 1] |= 0x10;
1500 relocation += sgot->output_section->vma;
1501 }
1502 break;
1503
1504 case R_VAX_PC32:
1505 /* If we are creating an executable and the function this
1506 reloc refers to is in a shared lib, then we made a PLT
1507 entry for this symbol and need to handle the reloc like
1508 a PLT reloc. */
1509 if (info->shared)
1510 goto r_vax_pc32_shared;
1511 /* Fall through. */
1512 case R_VAX_PLT32:
1513 /* Relocation is to the entry for this symbol in the
1514 procedure linkage table. */
1515
1516 /* Resolve a PLTxx reloc against a local symbol directly,
1517 without using the procedure linkage table. */
1518 if (h == NULL
1519 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1520 || h->forced_local)
1521 break;
1522
1523 if (h->plt.offset == (bfd_vma) -1
1524 || !elf_hash_table (info)->dynamic_sections_created)
1525 {
1526 /* We didn't make a PLT entry for this symbol. This
1527 happens when statically linking PIC code, or when
1528 using -Bsymbolic. */
1529 break;
1530 }
1531
1532 if (splt == NULL)
1533 {
1534 splt = bfd_get_linker_section (dynobj, ".plt");
1535 BFD_ASSERT (splt != NULL);
1536 }
1537
1538 if (sgotplt == NULL)
1539 {
1540 sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1541 BFD_ASSERT (sgotplt != NULL);
1542 }
1543
1544 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1545
1546 /* Get the offset into the .got table of the entry that
1547 corresponds to this function. Each .got entry is 4 bytes.
1548 The first two are reserved. */
1549 got_offset = (plt_index + 3) * 4;
1550
1551 /* We want the relocation to point into the .got.plt instead
1552 of the plt itself. */
1553 relocation = (sgotplt->output_section->vma
1554 + sgotplt->output_offset
1555 + got_offset);
1556 contents[rel->r_offset-1] |= 0x10; /* make indirect */
1557 if (rel->r_addend == 2)
1558 {
1559 h->plt.offset |= 1;
1560 }
1561 else if (rel->r_addend != 0)
1562 (*_bfd_error_handler)
1563 (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"),
1564 bfd_get_filename (input_bfd), rel->r_addend,
1565 h->root.root.string,
1566 bfd_get_section_name (input_bfd, input_section));
1567 rel->r_addend = 0;
1568
1569 break;
1570
1571 case R_VAX_PC8:
1572 case R_VAX_PC16:
1573 r_vax_pc32_shared:
1574 if (h == NULL
1575 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1576 || h->forced_local)
1577 break;
1578 /* Fall through. */
1579 case R_VAX_8:
1580 case R_VAX_16:
1581 case R_VAX_32:
1582 if (info->shared
1583 && r_symndx != STN_UNDEF
1584 && (input_section->flags & SEC_ALLOC) != 0
1585 && ((r_type != R_VAX_PC8
1586 && r_type != R_VAX_PC16
1587 && r_type != R_VAX_PC32)
1588 || ((input_section->flags & SEC_CODE)
1589 && (!info->symbolic
1590 || (!h->def_regular && h->type != STT_SECTION)))))
1591 {
1592 Elf_Internal_Rela outrel;
1593 bfd_byte *loc;
1594 bfd_boolean skip, relocate;
1595
1596 /* When generating a shared object, these relocations
1597 are copied into the output file to be resolved at run
1598 time. */
1599 if (sreloc == NULL)
1600 {
1601 sreloc = _bfd_elf_get_dynamic_reloc_section
1602 (input_bfd, input_section, /*rela?*/ TRUE);
1603 if (sreloc == NULL)
1604 return FALSE;
1605 }
1606
1607 skip = FALSE;
1608 relocate = FALSE;
1609
1610 outrel.r_offset =
1611 _bfd_elf_section_offset (output_bfd, info, input_section,
1612 rel->r_offset);
1613 if (outrel.r_offset == (bfd_vma) -1)
1614 skip = TRUE;
1615 if (outrel.r_offset == (bfd_vma) -2)
1616 skip = TRUE, relocate = TRUE;
1617 outrel.r_offset += (input_section->output_section->vma
1618 + input_section->output_offset);
1619
1620 if (skip)
1621 memset (&outrel, 0, sizeof outrel);
1622 /* h->dynindx may be -1 if the symbol was marked to
1623 become local. */
1624 else if (h != NULL
1625 && ((! info->symbolic && h->dynindx != -1)
1626 || !h->def_regular))
1627 {
1628 BFD_ASSERT (h->dynindx != -1);
1629 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1630 outrel.r_addend = relocation + rel->r_addend;
1631 }
1632 else
1633 {
1634 if (r_type == R_VAX_32)
1635 {
1636 relocate = TRUE;
1637 outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE);
1638 BFD_ASSERT (bfd_get_signed_32 (input_bfd,
1639 &contents[rel->r_offset]) == 0);
1640 outrel.r_addend = relocation + rel->r_addend;
1641 }
1642 else
1643 {
1644 long indx;
1645
1646 if (bfd_is_abs_section (sec))
1647 indx = 0;
1648 else if (sec == NULL || sec->owner == NULL)
1649 {
1650 bfd_set_error (bfd_error_bad_value);
1651 return FALSE;
1652 }
1653 else
1654 {
1655 asection *osec;
1656
1657 /* We are turning this relocation into one
1658 against a section symbol. It would be
1659 proper to subtract the symbol's value,
1660 osec->vma, from the emitted reloc addend,
1661 but ld.so expects buggy relocs. */
1662 osec = sec->output_section;
1663 indx = elf_section_data (osec)->dynindx;
1664 if (indx == 0)
1665 {
1666 struct elf_link_hash_table *htab;
1667 htab = elf_hash_table (info);
1668 osec = htab->text_index_section;
1669 indx = elf_section_data (osec)->dynindx;
1670 }
1671 BFD_ASSERT (indx != 0);
1672 }
1673
1674 outrel.r_info = ELF32_R_INFO (indx, r_type);
1675 outrel.r_addend = relocation + rel->r_addend;
1676 }
1677 }
1678
1679 if ((input_section->flags & SEC_CODE) != 0
1680 || (ELF32_R_TYPE (outrel.r_info) != R_VAX_32
1681 && ELF32_R_TYPE (outrel.r_info) != R_VAX_RELATIVE
1682 && ELF32_R_TYPE (outrel.r_info) != R_VAX_COPY
1683 && ELF32_R_TYPE (outrel.r_info) != R_VAX_JMP_SLOT
1684 && ELF32_R_TYPE (outrel.r_info) != R_VAX_GLOB_DAT))
1685 {
1686 if (h != NULL)
1687 (*_bfd_error_handler)
1688 (_("%s: warning: %s relocation against symbol `%s' from %s section"),
1689 bfd_get_filename (input_bfd), howto->name,
1690 h->root.root.string,
1691 bfd_get_section_name (input_bfd, input_section));
1692 else
1693 (*_bfd_error_handler)
1694 (_("%s: warning: %s relocation to 0x%x from %s section"),
1695 bfd_get_filename (input_bfd), howto->name,
1696 outrel.r_addend,
1697 bfd_get_section_name (input_bfd, input_section));
1698 }
1699 loc = sreloc->contents;
1700 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1701 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1702
1703 /* This reloc will be computed at runtime, so there's no
1704 need to do anything now, except for R_VAX_32
1705 relocations that have been turned into
1706 R_VAX_RELATIVE. */
1707 if (!relocate)
1708 continue;
1709 }
1710
1711 break;
1712
1713 case R_VAX_GNU_VTINHERIT:
1714 case R_VAX_GNU_VTENTRY:
1715 /* These are no-ops in the end. */
1716 continue;
1717
1718 default:
1719 break;
1720 }
1721
1722 /* VAX PCREL relocations are from the end of relocation, not the start.
1723 So subtract the difference from the relocation amount since we can't
1724 add it to the offset. */
1725 if (howto->pc_relative && howto->pcrel_offset)
1726 relocation -= bfd_get_reloc_size(howto);
1727
1728 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1729 contents, rel->r_offset,
1730 relocation, rel->r_addend);
1731
1732 if (r != bfd_reloc_ok)
1733 {
1734 switch (r)
1735 {
1736 default:
1737 case bfd_reloc_outofrange:
1738 abort ();
1739 case bfd_reloc_overflow:
1740 {
1741 const char *name;
1742
1743 if (h != NULL)
1744 name = NULL;
1745 else
1746 {
1747 name = bfd_elf_string_from_elf_section (input_bfd,
1748 symtab_hdr->sh_link,
1749 sym->st_name);
1750 if (name == NULL)
1751 return FALSE;
1752 if (*name == '\0')
1753 name = bfd_section_name (input_bfd, sec);
1754 }
1755 if (!(info->callbacks->reloc_overflow
1756 (info, (h ? &h->root : NULL), name, howto->name,
1757 (bfd_vma) 0, input_bfd, input_section,
1758 rel->r_offset)))
1759 return FALSE;
1760 }
1761 break;
1762 }
1763 }
1764 }
1765
1766 return TRUE;
1767 }
1768
1769 /* Finish up dynamic symbol handling. We set the contents of various
1770 dynamic sections here. */
1771
1772 static bfd_boolean
1773 elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
1774 struct elf_link_hash_entry *h,
1775 Elf_Internal_Sym *sym)
1776 {
1777 bfd *dynobj;
1778
1779 dynobj = elf_hash_table (info)->dynobj;
1780
1781 if (h->plt.offset != (bfd_vma) -1)
1782 {
1783 asection *splt;
1784 asection *sgot;
1785 asection *srela;
1786 bfd_vma plt_index;
1787 bfd_vma got_offset;
1788 bfd_vma addend;
1789 Elf_Internal_Rela rela;
1790 bfd_byte *loc;
1791
1792 /* This symbol has an entry in the procedure linkage table. Set
1793 it up. */
1794 BFD_ASSERT (h->dynindx != -1);
1795
1796 splt = bfd_get_linker_section (dynobj, ".plt");
1797 sgot = bfd_get_linker_section (dynobj, ".got.plt");
1798 srela = bfd_get_linker_section (dynobj, ".rela.plt");
1799 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1800
1801 addend = 2 * (h->plt.offset & 1);
1802 h->plt.offset &= ~1;
1803
1804 /* Get the index in the procedure linkage table which
1805 corresponds to this symbol. This is the index of this symbol
1806 in all the symbols for which we are making plt entries. The
1807 first entry in the procedure linkage table is reserved. */
1808 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1809
1810 /* Get the offset into the .got table of the entry that
1811 corresponds to this function. Each .got entry is 4 bytes.
1812 The first two are reserved. */
1813 got_offset = (plt_index + 3) * 4;
1814
1815 /* Fill in the entry in the procedure linkage table. */
1816 memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry,
1817 PLT_ENTRY_SIZE);
1818
1819 /* The offset is relative to the first extension word. */
1820 bfd_put_32 (output_bfd,
1821 -(h->plt.offset + 8),
1822 splt->contents + h->plt.offset + 4);
1823
1824 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
1825 splt->contents + h->plt.offset + 8);
1826
1827 /* Fill in the entry in the global offset table. */
1828 bfd_put_32 (output_bfd,
1829 (splt->output_section->vma
1830 + splt->output_offset
1831 + h->plt.offset) + addend,
1832 sgot->contents + got_offset);
1833
1834 /* Fill in the entry in the .rela.plt section. */
1835 rela.r_offset = (sgot->output_section->vma
1836 + sgot->output_offset
1837 + got_offset);
1838 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT);
1839 rela.r_addend = addend;
1840 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
1841 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1842
1843 if (!h->def_regular)
1844 {
1845 /* Mark the symbol as undefined, rather than as defined in
1846 the .plt section. Leave the value alone. */
1847 sym->st_shndx = SHN_UNDEF;
1848 }
1849 }
1850
1851 if (h->got.offset != (bfd_vma) -1)
1852 {
1853 asection *sgot;
1854 asection *srela;
1855 Elf_Internal_Rela rela;
1856 bfd_byte *loc;
1857
1858 /* This symbol has an entry in the global offset table. Set it
1859 up. */
1860 sgot = bfd_get_linker_section (dynobj, ".got");
1861 srela = bfd_get_linker_section (dynobj, ".rela.got");
1862 BFD_ASSERT (sgot != NULL && srela != NULL);
1863
1864 rela.r_offset = (sgot->output_section->vma
1865 + sgot->output_offset
1866 + (h->got.offset &~ 1));
1867
1868 /* If the symbol was forced to be local because of a version file
1869 locally we just want to emit a RELATIVE reloc. The entry in
1870 the global offset table will already have been initialized in
1871 the relocate_section function. */
1872 if (info->shared
1873 && h->dynindx == -1
1874 && h->def_regular)
1875 {
1876 rela.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE);
1877 }
1878 else
1879 {
1880 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT);
1881 }
1882 rela.r_addend = bfd_get_signed_32 (output_bfd,
1883 (sgot->contents
1884 + (h->got.offset & ~1)));
1885
1886 loc = srela->contents;
1887 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1888 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1889 }
1890
1891 if (h->needs_copy)
1892 {
1893 asection *s;
1894 Elf_Internal_Rela rela;
1895 bfd_byte *loc;
1896
1897 /* This symbol needs a copy reloc. Set it up. */
1898 BFD_ASSERT (h->dynindx != -1
1899 && (h->root.type == bfd_link_hash_defined
1900 || h->root.type == bfd_link_hash_defweak));
1901
1902 s = bfd_get_linker_section (dynobj, ".rela.bss");
1903 BFD_ASSERT (s != NULL);
1904
1905 rela.r_offset = (h->root.u.def.value
1906 + h->root.u.def.section->output_section->vma
1907 + h->root.u.def.section->output_offset);
1908 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY);
1909 rela.r_addend = 0;
1910 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1911 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1912 }
1913
1914 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1915 if (h == elf_hash_table (info)->hdynamic
1916 || h == elf_hash_table (info)->hgot)
1917 sym->st_shndx = SHN_ABS;
1918
1919 return TRUE;
1920 }
1921
1922 /* Finish up the dynamic sections. */
1923
1924 static bfd_boolean
1925 elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1926 {
1927 bfd *dynobj;
1928 asection *sgot;
1929 asection *sdyn;
1930
1931 dynobj = elf_hash_table (info)->dynobj;
1932
1933 sgot = bfd_get_linker_section (dynobj, ".got.plt");
1934 BFD_ASSERT (sgot != NULL);
1935 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
1936
1937 if (elf_hash_table (info)->dynamic_sections_created)
1938 {
1939 asection *splt;
1940 Elf32_External_Dyn *dyncon, *dynconend;
1941
1942 splt = bfd_get_linker_section (dynobj, ".plt");
1943 BFD_ASSERT (splt != NULL && sdyn != NULL);
1944
1945 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1946 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1947 for (; dyncon < dynconend; dyncon++)
1948 {
1949 Elf_Internal_Dyn dyn;
1950 const char *name;
1951 asection *s;
1952
1953 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1954
1955 switch (dyn.d_tag)
1956 {
1957 default:
1958 break;
1959
1960 case DT_PLTGOT:
1961 name = ".got";
1962 goto get_vma;
1963 case DT_JMPREL:
1964 name = ".rela.plt";
1965 get_vma:
1966 s = bfd_get_section_by_name (output_bfd, name);
1967 BFD_ASSERT (s != NULL);
1968 dyn.d_un.d_ptr = s->vma;
1969 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1970 break;
1971
1972 case DT_PLTRELSZ:
1973 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1974 BFD_ASSERT (s != NULL);
1975 dyn.d_un.d_val = s->size;
1976 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1977 break;
1978
1979 case DT_RELASZ:
1980 /* The procedure linkage table relocs (DT_JMPREL) should
1981 not be included in the overall relocs (DT_RELA).
1982 Therefore, we override the DT_RELASZ entry here to
1983 make it not include the JMPREL relocs. Since the
1984 linker script arranges for .rela.plt to follow all
1985 other relocation sections, we don't have to worry
1986 about changing the DT_RELA entry. */
1987 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1988 if (s != NULL)
1989 dyn.d_un.d_val -= s->size;
1990 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1991 break;
1992 }
1993 }
1994
1995 /* Fill in the first entry in the procedure linkage table. */
1996 if (splt->size > 0)
1997 {
1998 memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE);
1999 bfd_put_32 (output_bfd,
2000 (sgot->output_section->vma
2001 + sgot->output_offset + 4
2002 - (splt->output_section->vma + 6)),
2003 splt->contents + 2);
2004 bfd_put_32 (output_bfd,
2005 (sgot->output_section->vma
2006 + sgot->output_offset + 8
2007 - (splt->output_section->vma + 12)),
2008 splt->contents + 8);
2009 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2010 = PLT_ENTRY_SIZE;
2011 }
2012 }
2013
2014 /* Fill in the first three entries in the global offset table. */
2015 if (sgot->size > 0)
2016 {
2017 if (sdyn == NULL)
2018 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2019 else
2020 bfd_put_32 (output_bfd,
2021 sdyn->output_section->vma + sdyn->output_offset,
2022 sgot->contents);
2023 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2024 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2025 }
2026
2027 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2028
2029 return TRUE;
2030 }
2031
2032 static enum elf_reloc_type_class
2033 elf_vax_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2034 const asection *rel_sec ATTRIBUTE_UNUSED,
2035 const Elf_Internal_Rela *rela)
2036 {
2037 switch ((int) ELF32_R_TYPE (rela->r_info))
2038 {
2039 case R_VAX_RELATIVE:
2040 return reloc_class_relative;
2041 case R_VAX_JMP_SLOT:
2042 return reloc_class_plt;
2043 case R_VAX_COPY:
2044 return reloc_class_copy;
2045 default:
2046 return reloc_class_normal;
2047 }
2048 }
2049
2050 static bfd_vma
2051 elf_vax_plt_sym_val (bfd_vma i, const asection *plt,
2052 const arelent *rel ATTRIBUTE_UNUSED)
2053 {
2054 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
2055 }
2056
2057 #define TARGET_LITTLE_SYM bfd_elf32_vax_vec
2058 #define TARGET_LITTLE_NAME "elf32-vax"
2059 #define ELF_MACHINE_CODE EM_VAX
2060 #define ELF_MAXPAGESIZE 0x1000
2061
2062 #define elf_backend_create_dynamic_sections \
2063 _bfd_elf_create_dynamic_sections
2064 #define bfd_elf32_bfd_link_hash_table_create \
2065 elf_vax_link_hash_table_create
2066 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
2067
2068 #define elf_backend_check_relocs elf_vax_check_relocs
2069 #define elf_backend_adjust_dynamic_symbol \
2070 elf_vax_adjust_dynamic_symbol
2071 #define elf_backend_size_dynamic_sections \
2072 elf_vax_size_dynamic_sections
2073 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
2074 #define elf_backend_relocate_section elf_vax_relocate_section
2075 #define elf_backend_finish_dynamic_symbol \
2076 elf_vax_finish_dynamic_symbol
2077 #define elf_backend_finish_dynamic_sections \
2078 elf_vax_finish_dynamic_sections
2079 #define elf_backend_reloc_type_class elf_vax_reloc_type_class
2080 #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook
2081 #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook
2082 #define elf_backend_plt_sym_val elf_vax_plt_sym_val
2083 #define bfd_elf32_bfd_merge_private_bfd_data \
2084 elf32_vax_merge_private_bfd_data
2085 #define bfd_elf32_bfd_set_private_flags \
2086 elf32_vax_set_private_flags
2087 #define bfd_elf32_bfd_print_private_bfd_data \
2088 elf32_vax_print_private_bfd_data
2089
2090 #define elf_backend_can_gc_sections 1
2091 #define elf_backend_want_got_plt 1
2092 #define elf_backend_plt_readonly 1
2093 #define elf_backend_want_plt_sym 0
2094 #define elf_backend_got_header_size 16
2095 #define elf_backend_rela_normal 1
2096
2097 #include "elf32-target.h"