projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Fallout from recent bfd_reloc_outofrange changes
[deliverable/binutils-gdb.git] / bfd / elf32-vax.c
1 /* VAX series support for 32-bit ELF
2 Copyright (C) 1993-2015 Free Software Foundation, Inc.
3 Contributed by Matt Thomas <matt@3am-software.com>.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf/vax.h"
28
29 static reloc_howto_type *reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
30 static void 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 *,
33 const char *);
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 *,
42 Elf_Internal_Rela *,
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 *,
46 Elf_Internal_Sym *);
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 *,
50 const arelent *);
51
52 static bfd_boolean elf32_vax_set_private_flags (bfd *, flagword);
53 static bfd_boolean elf32_vax_merge_private_bfd_data (bfd *, bfd *);
54 static bfd_boolean elf32_vax_print_private_bfd_data (bfd *, void *);
55
56 static reloc_howto_type howto_table[] = {
57 HOWTO (R_VAX_NONE, /* type */
58 0, /* rightshift */
59 3, /* size (0 = byte, 1 = short, 2 = long) */
60 0, /* bitsize */
61 FALSE, /* pc_relative */
62 0, /* bitpos */
63 complain_overflow_dont, /* complain_on_overflow */
64 bfd_elf_generic_reloc, /* special_function */
65 "R_VAX_NONE", /* name */
66 FALSE, /* partial_inplace */
67 0, /* src_mask */
68 0x00000000, /* dst_mask */
69 FALSE), /* pcrel_offset */
70
71 HOWTO (R_VAX_32, /* type */
72 0, /* rightshift */
73 2, /* size (0 = byte, 1 = short, 2 = long) */
74 32, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_bitfield, /* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_VAX_32", /* name */
80 FALSE, /* partial_inplace */
81 0, /* src_mask */
82 0xffffffff, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 HOWTO (R_VAX_16, /* type */
86 0, /* rightshift */
87 1, /* size (0 = byte, 1 = short, 2 = long) */
88 16, /* bitsize */
89 FALSE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_bitfield, /* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_VAX_16", /* name */
94 FALSE, /* partial_inplace */
95 0, /* src_mask */
96 0x0000ffff, /* dst_mask */
97 FALSE), /* pcrel_offset */
98
99 HOWTO (R_VAX_8, /* type */
100 0, /* rightshift */
101 0, /* size (0 = byte, 1 = short, 2 = long) */
102 8, /* bitsize */
103 FALSE, /* pc_relative */
104 0, /* bitpos */
105 complain_overflow_bitfield, /* complain_on_overflow */
106 bfd_elf_generic_reloc, /* special_function */
107 "R_VAX_8", /* name */
108 FALSE, /* partial_inplace */
109 0, /* src_mask */
110 0x000000ff, /* dst_mask */
111 FALSE), /* pcrel_offset */
112
113 HOWTO (R_VAX_PC32, /* type */
114 0, /* rightshift */
115 2, /* size (0 = byte, 1 = short, 2 = long) */
116 32, /* bitsize */
117 TRUE, /* pc_relative */
118 0, /* bitpos */
119 complain_overflow_bitfield, /* complain_on_overflow */
120 bfd_elf_generic_reloc, /* special_function */
121 "R_VAX_PC32", /* name */
122 FALSE, /* partial_inplace */
123 0, /* src_mask */
124 0xffffffff, /* dst_mask */
125 TRUE), /* pcrel_offset */
126
127 HOWTO (R_VAX_PC16, /* type */
128 0, /* rightshift */
129 1, /* size (0 = byte, 1 = short, 2 = long) */
130 16, /* bitsize */
131 TRUE, /* pc_relative */
132 0, /* bitpos */
133 complain_overflow_signed, /* complain_on_overflow */
134 bfd_elf_generic_reloc, /* special_function */
135 "R_VAX_PC16", /* name */
136 FALSE, /* partial_inplace */
137 0, /* src_mask */
138 0x0000ffff, /* dst_mask */
139 TRUE), /* pcrel_offset */
140
141 HOWTO (R_VAX_PC8, /* type */
142 0, /* rightshift */
143 0, /* size (0 = byte, 1 = short, 2 = long) */
144 8, /* bitsize */
145 TRUE, /* pc_relative */
146 0, /* bitpos */
147 complain_overflow_signed, /* complain_on_overflow */
148 bfd_elf_generic_reloc, /* special_function */
149 "R_VAX_PC8", /* name */
150 FALSE, /* partial_inplace */
151 0, /* src_mask */
152 0x000000ff, /* dst_mask */
153 TRUE), /* pcrel_offset */
154
155 HOWTO (R_VAX_GOT32, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 32, /* bitsize */
159 TRUE, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_bitfield, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_VAX_GOT32", /* name */
164 FALSE, /* partial_inplace */
165 0, /* src_mask */
166 0xffffffff, /* dst_mask */
167 TRUE), /* pcrel_offset */
168
169 EMPTY_HOWTO (-1),
170 EMPTY_HOWTO (-1),
171 EMPTY_HOWTO (-1),
172 EMPTY_HOWTO (-1),
173 EMPTY_HOWTO (-1),
174
175 HOWTO (R_VAX_PLT32, /* type */
176 0, /* rightshift */
177 2, /* size (0 = byte, 1 = short, 2 = long) */
178 32, /* bitsize */
179 TRUE, /* pc_relative */
180 0, /* bitpos */
181 complain_overflow_bitfield, /* complain_on_overflow */
182 bfd_elf_generic_reloc, /* special_function */
183 "R_VAX_PLT32", /* name */
184 FALSE, /* partial_inplace */
185 0, /* src_mask */
186 0xffffffff, /* dst_mask */
187 TRUE), /* pcrel_offset */
188
189 EMPTY_HOWTO (-1),
190 EMPTY_HOWTO (-1),
191 EMPTY_HOWTO (-1),
192 EMPTY_HOWTO (-1),
193 EMPTY_HOWTO (-1),
194
195 HOWTO (R_VAX_COPY, /* type */
196 0, /* rightshift */
197 0, /* size (0 = byte, 1 = short, 2 = long) */
198 0, /* bitsize */
199 FALSE, /* pc_relative */
200 0, /* bitpos */
201 complain_overflow_dont, /* complain_on_overflow */
202 bfd_elf_generic_reloc, /* special_function */
203 "R_VAX_COPY", /* name */
204 FALSE, /* partial_inplace */
205 0, /* src_mask */
206 0xffffffff, /* dst_mask */
207 FALSE), /* pcrel_offset */
208
209 HOWTO (R_VAX_GLOB_DAT, /* type */
210 0, /* rightshift */
211 2, /* size (0 = byte, 1 = short, 2 = long) */
212 32, /* bitsize */
213 FALSE, /* pc_relative */
214 0, /* bitpos */
215 complain_overflow_dont, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_VAX_GLOB_DAT", /* name */
218 FALSE, /* partial_inplace */
219 0, /* src_mask */
220 0xffffffff, /* dst_mask */
221 FALSE), /* pcrel_offset */
222
223 HOWTO (R_VAX_JMP_SLOT, /* type */
224 0, /* rightshift */
225 2, /* size (0 = byte, 1 = short, 2 = long) */
226 32, /* bitsize */
227 FALSE, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont, /* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_VAX_JMP_SLOT", /* name */
232 FALSE, /* partial_inplace */
233 0, /* src_mask */
234 0xffffffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
236
237 HOWTO (R_VAX_RELATIVE, /* type */
238 0, /* rightshift */
239 2, /* size (0 = byte, 1 = short, 2 = long) */
240 32, /* bitsize */
241 FALSE, /* pc_relative */
242 0, /* bitpos */
243 complain_overflow_dont, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_VAX_RELATIVE", /* name */
246 FALSE, /* partial_inplace */
247 0, /* src_mask */
248 0xffffffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
250
251 /* GNU extension to record C++ vtable hierarchy */
252 HOWTO (R_VAX_GNU_VTINHERIT, /* type */
253 0, /* rightshift */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
255 0, /* bitsize */
256 FALSE, /* pc_relative */
257 0, /* bitpos */
258 complain_overflow_dont, /* complain_on_overflow */
259 NULL, /* special_function */
260 "R_VAX_GNU_VTINHERIT", /* name */
261 FALSE, /* partial_inplace */
262 0, /* src_mask */
263 0, /* dst_mask */
264 FALSE), /* pcrel_offset */
265
266 /* GNU extension to record C++ vtable member usage */
267 HOWTO (R_VAX_GNU_VTENTRY, /* type */
268 0, /* rightshift */
269 2, /* size (0 = byte, 1 = short, 2 = long) */
270 0, /* bitsize */
271 FALSE, /* pc_relative */
272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
275 "R_VAX_GNU_VTENTRY", /* name */
276 FALSE, /* partial_inplace */
277 0, /* src_mask */
278 0, /* dst_mask */
279 FALSE), /* pcrel_offset */
280 };
281
282 static void
283 rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
284 Elf_Internal_Rela *dst)
285 {
286 unsigned int r_type;
287
288 r_type = ELF32_R_TYPE (dst->r_info);
289 if (r_type >= R_VAX_max)
290 {
291 (*_bfd_error_handler) (_("%A: unrecognised VAX reloc number: %d"),
292 abfd, r_type);
293 bfd_set_error (bfd_error_bad_value);
294 r_type = R_VAX_NONE;
295 }
296 cache_ptr->howto = &howto_table[r_type];
297 }
298
299 #define elf_info_to_howto rtype_to_howto
300
301 static const struct
302 {
303 bfd_reloc_code_real_type bfd_val;
304 int elf_val;
305 } reloc_map[] = {
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 },
322 };
323
324 static reloc_howto_type *
325 reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
326 {
327 unsigned int i;
328 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
329 {
330 if (reloc_map[i].bfd_val == code)
331 return &howto_table[reloc_map[i].elf_val];
332 }
333 return 0;
334 }
335
336 static reloc_howto_type *
337 reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
338 const char *r_name)
339 {
340 unsigned int i;
341
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];
346
347 return NULL;
348 }
349
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 */
354 \f
355 /* Functions for the VAX ELF linker. */
356
357 /* The name of the dynamic interpreter. This is put in the .interp
358 section. */
359
360 #define ELF_DYNAMIC_INTERPRETER "/usr/libexec/ld.elf_so"
361
362 /* The size in bytes of an entry in the procedure linkage table. */
363
364 #define PLT_ENTRY_SIZE 12
365
366 /* The first entry in a procedure linkage table looks like this. See
367 the SVR4 ABI VAX supplement to see how this works. */
368
369 static const bfd_byte elf_vax_plt0_entry[PLT_ENTRY_SIZE] =
370 {
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 */
375 };
376
377 /* Subsequent entries in a procedure linkage table look like this. */
378
379 static const bfd_byte elf_vax_plt_entry[PLT_ENTRY_SIZE] =
380 {
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 */
385 };
386
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. */
392
393 /* This structure keeps track of the number of PC relative relocs we have
394 copied for a given symbol. */
395
396 struct elf_vax_pcrel_relocs_copied
397 {
398 /* Next section. */
399 struct elf_vax_pcrel_relocs_copied *next;
400 /* A section in dynobj. */
401 asection *section;
402 /* Number of relocs copied in this section. */
403 bfd_size_type count;
404 };
405
406 /* VAX ELF linker hash entry. */
407
408 struct elf_vax_link_hash_entry
409 {
410 struct elf_link_hash_entry root;
411
412 /* Number of PC relative relocs copied for this symbol. */
413 struct elf_vax_pcrel_relocs_copied *pcrel_relocs_copied;
414
415 bfd_vma got_addend;
416 };
417
418 /* Declare this now that the above structures are defined. */
419
420 static bfd_boolean elf_vax_discard_copies (struct elf_vax_link_hash_entry *,
421 void *);
422
423 /* Declare this now that the above structures are defined. */
424
425 static bfd_boolean elf_vax_instantiate_got_entries (struct elf_link_hash_entry *,
426 void *);
427
428 /* Traverse an VAX ELF linker hash table. */
429
430 #define elf_vax_link_hash_traverse(table, func, info) \
431 (elf_link_hash_traverse \
432 ((table), \
433 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
434 (info)))
435
436 /* Create an entry in an VAX ELF linker hash table. */
437
438 static struct bfd_hash_entry *
439 elf_vax_link_hash_newfunc (struct bfd_hash_entry *entry,
440 struct bfd_hash_table *table,
441 const char *string)
442 {
443 struct elf_vax_link_hash_entry *ret =
444 (struct elf_vax_link_hash_entry *) entry;
445
446 /* Allocate the structure if it has not already been allocated by a
447 subclass. */
448 if (ret == NULL)
449 ret = ((struct elf_vax_link_hash_entry *)
450 bfd_hash_allocate (table,
451 sizeof (struct elf_vax_link_hash_entry)));
452 if (ret == NULL)
453 return (struct bfd_hash_entry *) ret;
454
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,
458 table, string));
459 if (ret != NULL)
460 {
461 ret->pcrel_relocs_copied = NULL;
462 }
463
464 return (struct bfd_hash_entry *) ret;
465 }
466
467 /* Create an VAX ELF linker hash table. */
468
469 static struct bfd_link_hash_table *
470 elf_vax_link_hash_table_create (bfd *abfd)
471 {
472 struct elf_link_hash_table *ret;
473 bfd_size_type amt = sizeof (struct elf_link_hash_table);
474
475 ret = bfd_zmalloc (amt);
476 if (ret == NULL)
477 return NULL;
478
479 if (!_bfd_elf_link_hash_table_init (ret, abfd,
480 elf_vax_link_hash_newfunc,
481 sizeof (struct elf_vax_link_hash_entry),
482 GENERIC_ELF_DATA))
483 {
484 free (ret);
485 return NULL;
486 }
487
488 return &ret->root;
489 }
490
491 /* Keep vax-specific flags in the ELF header */
492 static bfd_boolean
493 elf32_vax_set_private_flags (bfd *abfd, flagword flags)
494 {
495 elf_elfheader (abfd)->e_flags = flags;
496 elf_flags_init (abfd) = TRUE;
497 return TRUE;
498 }
499
500 /* Merge backend specific data from an object file to the output
501 object file when linking. */
502 static bfd_boolean
503 elf32_vax_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
504 {
505 flagword in_flags;
506
507 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
508 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
509 return TRUE;
510
511 in_flags = elf_elfheader (ibfd)->e_flags;
512
513 if (!elf_flags_init (obfd))
514 {
515 elf_flags_init (obfd) = TRUE;
516 elf_elfheader (obfd)->e_flags = in_flags;
517 }
518
519 return TRUE;
520 }
521
522 /* Display the flags field */
523 static bfd_boolean
524 elf32_vax_print_private_bfd_data (bfd *abfd, void * ptr)
525 {
526 FILE *file = (FILE *) ptr;
527
528 BFD_ASSERT (abfd != NULL && ptr != NULL);
529
530 /* Print normal ELF private data. */
531 _bfd_elf_print_private_bfd_data (abfd, ptr);
532
533 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
534
535 /* xgettext:c-format */
536 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
537
538 if (elf_elfheader (abfd)->e_flags & EF_VAX_NONPIC)
539 fprintf (file, _(" [nonpic]"));
540
541 if (elf_elfheader (abfd)->e_flags & EF_VAX_DFLOAT)
542 fprintf (file, _(" [d-float]"));
543
544 if (elf_elfheader (abfd)->e_flags & EF_VAX_GFLOAT)
545 fprintf (file, _(" [g-float]"));
546
547 fputc ('\n', file);
548
549 return TRUE;
550 }
551 /* Look through the relocs for a section during the first phase, and
552 allocate space in the global offset table or procedure linkage
553 table. */
554
555 static bfd_boolean
556 elf_vax_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
557 const Elf_Internal_Rela *relocs)
558 {
559 bfd *dynobj;
560 Elf_Internal_Shdr *symtab_hdr;
561 struct elf_link_hash_entry **sym_hashes;
562 const Elf_Internal_Rela *rel;
563 const Elf_Internal_Rela *rel_end;
564 asection *sgot;
565 asection *srelgot;
566 asection *sreloc;
567
568 if (info->relocatable)
569 return TRUE;
570
571 dynobj = elf_hash_table (info)->dynobj;
572 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
573 sym_hashes = elf_sym_hashes (abfd);
574
575 sgot = NULL;
576 srelgot = NULL;
577 sreloc = NULL;
578
579 rel_end = relocs + sec->reloc_count;
580 for (rel = relocs; rel < rel_end; rel++)
581 {
582 unsigned long r_symndx;
583 struct elf_link_hash_entry *h;
584
585 r_symndx = ELF32_R_SYM (rel->r_info);
586
587 if (r_symndx < symtab_hdr->sh_info)
588 h = NULL;
589 else
590 {
591 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
592 while (h->root.type == bfd_link_hash_indirect
593 || h->root.type == bfd_link_hash_warning)
594 h = (struct elf_link_hash_entry *) h->root.u.i.link;
595
596 /* PR15323, ref flags aren't set for references in the same
597 object. */
598 h->root.non_ir_ref = 1;
599 }
600
601 switch (ELF32_R_TYPE (rel->r_info))
602 {
603 case R_VAX_GOT32:
604 BFD_ASSERT (h != NULL);
605
606 /* If this is a local symbol, we resolve it directly without
607 creating a global offset table entry. */
608 if (h->forced_local
609 || h == elf_hash_table (info)->hgot
610 || h == elf_hash_table (info)->hplt)
611 break;
612
613 /* This symbol requires a global offset table entry. */
614
615 if (dynobj == NULL)
616 {
617 /* Create the .got section. */
618 elf_hash_table (info)->dynobj = dynobj = abfd;
619 if (!_bfd_elf_create_got_section (dynobj, info))
620 return FALSE;
621 }
622
623 if (sgot == NULL)
624 {
625 sgot = bfd_get_linker_section (dynobj, ".got");
626 BFD_ASSERT (sgot != NULL);
627 }
628
629 if (srelgot == NULL
630 && (h != NULL || info->shared))
631 {
632 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
633 if (srelgot == NULL)
634 {
635 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
636 | SEC_IN_MEMORY | SEC_LINKER_CREATED
637 | SEC_READONLY);
638
639 srelgot = bfd_make_section_anyway_with_flags (dynobj,
640 ".rela.got",
641 flags);
642 if (srelgot == NULL
643 || !bfd_set_section_alignment (dynobj, srelgot, 2))
644 return FALSE;
645 }
646 }
647
648 if (h != NULL)
649 {
650 struct elf_vax_link_hash_entry *eh;
651
652 eh = (struct elf_vax_link_hash_entry *) h;
653 if (h->got.refcount == -1)
654 {
655 h->got.refcount = 1;
656 eh->got_addend = rel->r_addend;
657 }
658 else
659 {
660 h->got.refcount++;
661 if (eh->got_addend != (bfd_vma) rel->r_addend)
662 (*_bfd_error_handler)
663 (_("%s: warning: GOT addend of %ld to `%s' does"
664 " not match previous GOT addend of %ld"),
665 bfd_get_filename (abfd), rel->r_addend,
666 h->root.root.string,
667 eh->got_addend);
668
669 }
670 }
671 break;
672
673 case R_VAX_PLT32:
674 /* This symbol requires a procedure linkage table entry. We
675 actually build the entry in adjust_dynamic_symbol,
676 because this might be a case of linking PIC code which is
677 never referenced by a dynamic object, in which case we
678 don't need to generate a procedure linkage table entry
679 after all. */
680 BFD_ASSERT (h != NULL);
681
682 /* If this is a local symbol, we resolve it directly without
683 creating a procedure linkage table entry. */
684 if (h->forced_local)
685 break;
686
687 h->needs_plt = 1;
688 if (h->plt.refcount == -1)
689 h->plt.refcount = 1;
690 else
691 h->plt.refcount++;
692 break;
693
694 case R_VAX_PC8:
695 case R_VAX_PC16:
696 case R_VAX_PC32:
697 /* If we are creating a shared library and this is not a local
698 symbol, we need to copy the reloc into the shared library.
699 However when linking with -Bsymbolic and this is a global
700 symbol which is defined in an object we are including in the
701 link (i.e., DEF_REGULAR is set), then we can resolve the
702 reloc directly. At this point we have not seen all the input
703 files, so it is possible that DEF_REGULAR is not set now but
704 will be set later (it is never cleared). We account for that
705 possibility below by storing information in the
706 pcrel_relocs_copied field of the hash table entry. */
707 if (!(info->shared
708 && (sec->flags & SEC_ALLOC) != 0
709 && h != NULL
710 && (!info->symbolic
711 || !h->def_regular)))
712 {
713 if (h != NULL
714 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
715 && !h->forced_local)
716 {
717 /* Make sure a plt entry is created for this symbol if
718 it turns out to be a function defined by a dynamic
719 object. */
720 if (h->plt.refcount == -1)
721 h->plt.refcount = 1;
722 else
723 h->plt.refcount++;
724 }
725 break;
726 }
727 /* If this is a local symbol, we can resolve it directly. */
728 if (h != NULL
729 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
730 || h->forced_local))
731 break;
732
733 /* Fall through. */
734 case R_VAX_8:
735 case R_VAX_16:
736 case R_VAX_32:
737 if (h != NULL && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
738 {
739 /* Make sure a plt entry is created for this symbol if it
740 turns out to be a function defined by a dynamic object. */
741 if (h->plt.refcount == -1)
742 h->plt.refcount = 1;
743 else
744 h->plt.refcount++;
745 }
746
747 /* If we are creating a shared library, we need to copy the
748 reloc into the shared library. */
749 if (info->shared
750 && (sec->flags & SEC_ALLOC) != 0)
751 {
752 /* When creating a shared object, we must copy these
753 reloc types into the output file. We create a reloc
754 section in dynobj and make room for this reloc. */
755 if (sreloc == NULL)
756 {
757 sreloc = _bfd_elf_make_dynamic_reloc_section
758 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
759
760 if (sreloc == NULL)
761 return FALSE;
762
763 if (sec->flags & SEC_READONLY)
764 info->flags |= DF_TEXTREL;
765 }
766
767 sreloc->size += sizeof (Elf32_External_Rela);
768
769 /* If we are linking with -Bsymbolic, we count the number of
770 PC relative relocations we have entered for this symbol,
771 so that we can discard them again if the symbol is later
772 defined by a regular object. Note that this function is
773 only called if we are using a vaxelf linker hash table,
774 which means that h is really a pointer to an
775 elf_vax_link_hash_entry. */
776 if ((ELF32_R_TYPE (rel->r_info) == R_VAX_PC8
777 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC16
778 || ELF32_R_TYPE (rel->r_info) == R_VAX_PC32)
779 && info->symbolic)
780 {
781 struct elf_vax_link_hash_entry *eh;
782 struct elf_vax_pcrel_relocs_copied *p;
783
784 eh = (struct elf_vax_link_hash_entry *) h;
785
786 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
787 if (p->section == sreloc)
788 break;
789
790 if (p == NULL)
791 {
792 p = ((struct elf_vax_pcrel_relocs_copied *)
793 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
794 if (p == NULL)
795 return FALSE;
796 p->next = eh->pcrel_relocs_copied;
797 eh->pcrel_relocs_copied = p;
798 p->section = sreloc;
799 p->count = 0;
800 }
801
802 ++p->count;
803 }
804 }
805
806 break;
807
808 /* This relocation describes the C++ object vtable hierarchy.
809 Reconstruct it for later use during GC. */
810 case R_VAX_GNU_VTINHERIT:
811 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
812 return FALSE;
813 break;
814
815 /* This relocation describes which C++ vtable entries are actually
816 used. Record for later use during GC. */
817 case R_VAX_GNU_VTENTRY:
818 BFD_ASSERT (h != NULL);
819 if (h != NULL
820 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
821 return FALSE;
822 break;
823
824 default:
825 break;
826 }
827 }
828
829 return TRUE;
830 }
831
832 /* Return the section that should be marked against GC for a given
833 relocation. */
834
835 static asection *
836 elf_vax_gc_mark_hook (asection *sec,
837 struct bfd_link_info *info,
838 Elf_Internal_Rela *rel,
839 struct elf_link_hash_entry *h,
840 Elf_Internal_Sym *sym)
841 {
842 if (h != NULL)
843 switch (ELF32_R_TYPE (rel->r_info))
844 {
845 case R_VAX_GNU_VTINHERIT:
846 case R_VAX_GNU_VTENTRY:
847 return NULL;
848 }
849
850 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
851 }
852
853 /* Update the got entry reference counts for the section being removed. */
854
855 static bfd_boolean
856 elf_vax_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec,
857 const Elf_Internal_Rela *relocs)
858 {
859 Elf_Internal_Shdr *symtab_hdr;
860 struct elf_link_hash_entry **sym_hashes;
861 const Elf_Internal_Rela *rel, *relend;
862 bfd *dynobj;
863
864 if (info->relocatable)
865 return TRUE;
866
867 dynobj = elf_hash_table (info)->dynobj;
868 if (dynobj == NULL)
869 return TRUE;
870
871 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
872 sym_hashes = elf_sym_hashes (abfd);
873
874 relend = relocs + sec->reloc_count;
875 for (rel = relocs; rel < relend; rel++)
876 {
877 unsigned long r_symndx;
878 struct elf_link_hash_entry *h = NULL;
879
880 r_symndx = ELF32_R_SYM (rel->r_info);
881 if (r_symndx >= symtab_hdr->sh_info)
882 {
883 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
884 while (h->root.type == bfd_link_hash_indirect
885 || h->root.type == bfd_link_hash_warning)
886 h = (struct elf_link_hash_entry *) h->root.u.i.link;
887 }
888
889 switch (ELF32_R_TYPE (rel->r_info))
890 {
891 case R_VAX_GOT32:
892 if (h != NULL && h->got.refcount > 0)
893 --h->got.refcount;
894 break;
895
896 case R_VAX_PLT32:
897 case R_VAX_PC8:
898 case R_VAX_PC16:
899 case R_VAX_PC32:
900 case R_VAX_8:
901 case R_VAX_16:
902 case R_VAX_32:
903 if (h != NULL && h->plt.refcount > 0)
904 --h->plt.refcount;
905 break;
906
907 default:
908 break;
909 }
910 }
911
912 return TRUE;
913 }
914
915 /* Adjust a symbol defined by a dynamic object and referenced by a
916 regular object. The current definition is in some section of the
917 dynamic object, but we're not including those sections. We have to
918 change the definition to something the rest of the link can
919 understand. */
920
921 static bfd_boolean
922 elf_vax_adjust_dynamic_symbol (struct bfd_link_info *info,
923 struct elf_link_hash_entry *h)
924 {
925 bfd *dynobj;
926 asection *s;
927
928 dynobj = elf_hash_table (info)->dynobj;
929
930 /* Make sure we know what is going on here. */
931 BFD_ASSERT (dynobj != NULL
932 && (h->needs_plt
933 || h->u.weakdef != NULL
934 || (h->def_dynamic
935 && h->ref_regular
936 && !h->def_regular)));
937
938 /* If this is a function, put it in the procedure linkage table. We
939 will fill in the contents of the procedure linkage table later,
940 when we know the address of the .got section. */
941 if (h->type == STT_FUNC
942 || h->needs_plt)
943 {
944 if (h->plt.refcount <= 0
945 || SYMBOL_CALLS_LOCAL (info, h)
946 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
947 && h->root.type == bfd_link_hash_undefweak))
948 {
949 /* This case can occur if we saw a PLTxx reloc in an input
950 file, but the symbol was never referred to by a dynamic
951 object, or if all references were garbage collected. In
952 such a case, we don't actually need to build a procedure
953 linkage table, and we can just do a PCxx reloc instead. */
954 h->plt.offset = (bfd_vma) -1;
955 h->needs_plt = 0;
956 return TRUE;
957 }
958
959 s = bfd_get_linker_section (dynobj, ".plt");
960 BFD_ASSERT (s != NULL);
961
962 /* If this is the first .plt entry, make room for the special
963 first entry. */
964 if (s->size == 0)
965 {
966 s->size += PLT_ENTRY_SIZE;
967 }
968
969 /* If this symbol is not defined in a regular file, and we are
970 not generating a shared library, then set the symbol to this
971 location in the .plt. This is required to make function
972 pointers compare as equal between the normal executable and
973 the shared library. */
974 if (!info->shared
975 && !h->def_regular)
976 {
977 h->root.u.def.section = s;
978 h->root.u.def.value = s->size;
979 }
980
981 h->plt.offset = s->size;
982
983 /* Make room for this entry. */
984 s->size += PLT_ENTRY_SIZE;
985
986 /* We also need to make an entry in the .got.plt section, which
987 will be placed in the .got section by the linker script. */
988
989 s = bfd_get_linker_section (dynobj, ".got.plt");
990 BFD_ASSERT (s != NULL);
991 s->size += 4;
992
993 /* We also need to make an entry in the .rela.plt section. */
994
995 s = bfd_get_linker_section (dynobj, ".rela.plt");
996 BFD_ASSERT (s != NULL);
997 s->size += sizeof (Elf32_External_Rela);
998
999 return TRUE;
1000 }
1001
1002 /* Reinitialize the plt offset now that it is not used as a reference
1003 count any more. */
1004 h->plt.offset = (bfd_vma) -1;
1005
1006 /* If this is a weak symbol, and there is a real definition, the
1007 processor independent code will have arranged for us to see the
1008 real definition first, and we can just use the same value. */
1009 if (h->u.weakdef != NULL)
1010 {
1011 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1012 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1013 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1014 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1015 return TRUE;
1016 }
1017
1018 /* This is a reference to a symbol defined by a dynamic object which
1019 is not a function. */
1020
1021 /* If we are creating a shared library, we must presume that the
1022 only references to the symbol are via the global offset table.
1023 For such cases we need not do anything here; the relocations will
1024 be handled correctly by relocate_section. */
1025 if (info->shared)
1026 return TRUE;
1027
1028 /* We must allocate the symbol in our .dynbss section, which will
1029 become part of the .bss section of the executable. There will be
1030 an entry for this symbol in the .dynsym section. The dynamic
1031 object will contain position independent code, so all references
1032 from the dynamic object to this symbol will go through the global
1033 offset table. The dynamic linker will use the .dynsym entry to
1034 determine the address it must put in the global offset table, so
1035 both the dynamic object and the regular object will refer to the
1036 same memory location for the variable. */
1037
1038 s = bfd_get_linker_section (dynobj, ".dynbss");
1039 BFD_ASSERT (s != NULL);
1040
1041 /* We must generate a R_VAX_COPY reloc to tell the dynamic linker to
1042 copy the initial value out of the dynamic object and into the
1043 runtime process image. We need to remember the offset into the
1044 .rela.bss section we are going to use. */
1045 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1046 {
1047 asection *srel;
1048
1049 srel = bfd_get_linker_section (dynobj, ".rela.bss");
1050 BFD_ASSERT (srel != NULL);
1051 srel->size += sizeof (Elf32_External_Rela);
1052 h->needs_copy = 1;
1053 }
1054
1055 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1056 }
1057
1058 /* This function is called via elf_link_hash_traverse. It resets GOT
1059 and PLT (.GOT) reference counts back to -1 so normal PC32 relocation
1060 will be done. */
1061
1062 static bfd_boolean
1063 elf_vax_discard_got_entries (struct elf_link_hash_entry *h,
1064 void *infoptr ATTRIBUTE_UNUSED)
1065 {
1066 h->got.refcount = -1;
1067 h->plt.refcount = -1;
1068
1069 return TRUE;
1070 }
1071
1072 /* Discard unused dynamic data if this is a static link. */
1073
1074 static bfd_boolean
1075 elf_vax_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1076 struct bfd_link_info *info)
1077 {
1078 bfd *dynobj;
1079 asection *s;
1080
1081 dynobj = elf_hash_table (info)->dynobj;
1082
1083 if (dynobj && !elf_hash_table (info)->dynamic_sections_created)
1084 {
1085 /* We may have created entries in the .rela.got and .got sections.
1086 However, if we are not creating the dynamic sections, we will
1087 not actually use these entries. Reset the size of .rela.got
1088 and .got, which will cause them to get stripped from the output
1089 file below. */
1090 s = bfd_get_linker_section (dynobj, ".rela.got");
1091 if (s != NULL)
1092 s->size = 0;
1093 s = bfd_get_linker_section (dynobj, ".got.plt");
1094 if (s != NULL)
1095 s->size = 0;
1096 s = bfd_get_linker_section (dynobj, ".got");
1097 if (s != NULL)
1098 s->size = 0;
1099 }
1100
1101 /* If this is a static link, we need to discard all the got entries we've
1102 recorded. */
1103 if (!dynobj || !elf_hash_table (info)->dynamic_sections_created)
1104 elf_link_hash_traverse (elf_hash_table (info),
1105 elf_vax_discard_got_entries,
1106 info);
1107
1108 return TRUE;
1109 }
1110
1111 /* Set the sizes of the dynamic sections. */
1112
1113 static bfd_boolean
1114 elf_vax_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1115 {
1116 bfd *dynobj;
1117 asection *s;
1118 bfd_boolean plt;
1119 bfd_boolean relocs;
1120 bfd_boolean reltext;
1121
1122 dynobj = elf_hash_table (info)->dynobj;
1123 BFD_ASSERT (dynobj != NULL);
1124
1125 if (elf_hash_table (info)->dynamic_sections_created)
1126 {
1127 /* Set the contents of the .interp section to the interpreter. */
1128 if (info->executable)
1129 {
1130 s = bfd_get_linker_section (dynobj, ".interp");
1131 BFD_ASSERT (s != NULL);
1132 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1133 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1134 }
1135 }
1136
1137 /* If this is a -Bsymbolic shared link, then we need to discard all PC
1138 relative relocs against symbols defined in a regular object. We
1139 allocated space for them in the check_relocs routine, but we will not
1140 fill them in in the relocate_section routine. */
1141 if (info->shared && info->symbolic)
1142 elf_vax_link_hash_traverse (elf_hash_table (info),
1143 elf_vax_discard_copies,
1144 NULL);
1145
1146 /* If this is a -Bsymbolic shared link, we need to discard all the got
1147 entries we've recorded. Otherwise, we need to instantiate (allocate
1148 space for them). */
1149 elf_link_hash_traverse (elf_hash_table (info),
1150 elf_vax_instantiate_got_entries,
1151 info);
1152
1153 /* The check_relocs and adjust_dynamic_symbol entry points have
1154 determined the sizes of the various dynamic sections. Allocate
1155 memory for them. */
1156 plt = FALSE;
1157 relocs = FALSE;
1158 reltext = FALSE;
1159 for (s = dynobj->sections; s != NULL; s = s->next)
1160 {
1161 const char *name;
1162
1163 if ((s->flags & SEC_LINKER_CREATED) == 0)
1164 continue;
1165
1166 /* It's OK to base decisions on the section name, because none
1167 of the dynobj section names depend upon the input files. */
1168 name = bfd_get_section_name (dynobj, s);
1169
1170 if (strcmp (name, ".plt") == 0)
1171 {
1172 /* Remember whether there is a PLT. */
1173 plt = s->size != 0;
1174 }
1175 else if (CONST_STRNEQ (name, ".rela"))
1176 {
1177 if (s->size != 0)
1178 {
1179 asection *target;
1180
1181 /* Remember whether there are any reloc sections other
1182 than .rela.plt. */
1183 if (strcmp (name, ".rela.plt") != 0)
1184 {
1185 const char *outname;
1186
1187 relocs = TRUE;
1188
1189 /* If this relocation section applies to a read only
1190 section, then we probably need a DT_TEXTREL
1191 entry. .rela.plt is actually associated with
1192 .got.plt, which is never readonly. */
1193 outname = bfd_get_section_name (output_bfd,
1194 s->output_section);
1195 target = bfd_get_section_by_name (output_bfd, outname + 5);
1196 if (target != NULL
1197 && (target->flags & SEC_READONLY) != 0
1198 && (target->flags & SEC_ALLOC) != 0)
1199 reltext = TRUE;
1200 }
1201
1202 /* We use the reloc_count field as a counter if we need
1203 to copy relocs into the output file. */
1204 s->reloc_count = 0;
1205 }
1206 }
1207 else if (! CONST_STRNEQ (name, ".got")
1208 && strcmp (name, ".dynbss") != 0)
1209 {
1210 /* It's not one of our sections, so don't allocate space. */
1211 continue;
1212 }
1213
1214 if (s->size == 0)
1215 {
1216 /* If we don't need this section, strip it from the
1217 output file. This is mostly to handle .rela.bss and
1218 .rela.plt. We must create both sections in
1219 create_dynamic_sections, because they must be created
1220 before the linker maps input sections to output
1221 sections. The linker does that before
1222 adjust_dynamic_symbol is called, and it is that
1223 function which decides whether anything needs to go
1224 into these sections. */
1225 s->flags |= SEC_EXCLUDE;
1226 continue;
1227 }
1228
1229 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1230 continue;
1231
1232 /* Allocate memory for the section contents. */
1233 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
1234 if (s->contents == NULL)
1235 return FALSE;
1236 }
1237
1238 if (elf_hash_table (info)->dynamic_sections_created)
1239 {
1240 /* Add some entries to the .dynamic section. We fill in the
1241 values later, in elf_vax_finish_dynamic_sections, but we
1242 must add the entries now so that we get the correct size for
1243 the .dynamic section. The DT_DEBUG entry is filled in by the
1244 dynamic linker and used by the debugger. */
1245 #define add_dynamic_entry(TAG, VAL) \
1246 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1247
1248 if (!info->shared)
1249 {
1250 if (!add_dynamic_entry (DT_DEBUG, 0))
1251 return FALSE;
1252 }
1253
1254 if (plt)
1255 {
1256 if (!add_dynamic_entry (DT_PLTGOT, 0)
1257 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1258 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1259 || !add_dynamic_entry (DT_JMPREL, 0))
1260 return FALSE;
1261 }
1262
1263 if (relocs)
1264 {
1265 if (!add_dynamic_entry (DT_RELA, 0)
1266 || !add_dynamic_entry (DT_RELASZ, 0)
1267 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
1268 return FALSE;
1269 }
1270
1271 if (reltext || (info->flags & DF_TEXTREL) != 0)
1272 {
1273 if (!add_dynamic_entry (DT_TEXTREL, 0))
1274 return FALSE;
1275 }
1276 }
1277 #undef add_dynamic_entry
1278
1279 return TRUE;
1280 }
1281
1282 /* This function is called via elf_vax_link_hash_traverse if we are
1283 creating a shared object with -Bsymbolic. It discards the space
1284 allocated to copy PC relative relocs against symbols which are defined
1285 in regular objects. We allocated space for them in the check_relocs
1286 routine, but we won't fill them in in the relocate_section routine. */
1287
1288 static bfd_boolean
1289 elf_vax_discard_copies (struct elf_vax_link_hash_entry *h,
1290 void * ignore ATTRIBUTE_UNUSED)
1291 {
1292 struct elf_vax_pcrel_relocs_copied *s;
1293
1294 /* We only discard relocs for symbols defined in a regular object. */
1295 if (!h->root.def_regular)
1296 return TRUE;
1297
1298 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
1299 s->section->size -= s->count * sizeof (Elf32_External_Rela);
1300
1301 return TRUE;
1302 }
1303
1304 /* This function is called via elf_link_hash_traverse. It looks for
1305 entries that have GOT or PLT (.GOT) references. If creating a shared
1306 object with -Bsymbolic, or the symbol has been forced local, then it
1307 resets the reference count back to -1 so normal PC32 relocation will
1308 be done. Otherwise space in the .got and .rela.got will be reserved
1309 for the symbol. */
1310
1311 static bfd_boolean
1312 elf_vax_instantiate_got_entries (struct elf_link_hash_entry *h, void * infoptr)
1313 {
1314 struct bfd_link_info *info = (struct bfd_link_info *) infoptr;
1315 bfd *dynobj;
1316 asection *sgot;
1317 asection *srelgot;
1318
1319 /* We don't care about non-GOT (and non-PLT) entries. */
1320 if (h->got.refcount <= 0 && h->plt.refcount <= 0)
1321 return TRUE;
1322
1323 dynobj = elf_hash_table (info)->dynobj;
1324 BFD_ASSERT (dynobj != NULL);
1325
1326 sgot = bfd_get_linker_section (dynobj, ".got");
1327 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1328
1329 if (SYMBOL_REFERENCES_LOCAL (info, h))
1330 {
1331 h->got.refcount = -1;
1332 h->plt.refcount = -1;
1333 }
1334 else if (h->got.refcount > 0)
1335 {
1336 /* Make sure this symbol is output as a dynamic symbol. */
1337 if (h->dynindx == -1)
1338 {
1339 if (!bfd_elf_link_record_dynamic_symbol (info, h))
1340 return FALSE;
1341 }
1342
1343 /* Allocate space in the .got and .rela.got sections. */
1344 sgot->size += 4;
1345 srelgot->size += sizeof (Elf32_External_Rela);
1346 }
1347
1348 return TRUE;
1349 }
1350
1351 /* Relocate an VAX ELF section. */
1352
1353 static bfd_boolean
1354 elf_vax_relocate_section (bfd *output_bfd,
1355 struct bfd_link_info *info,
1356 bfd *input_bfd,
1357 asection *input_section,
1358 bfd_byte *contents,
1359 Elf_Internal_Rela *relocs,
1360 Elf_Internal_Sym *local_syms,
1361 asection **local_sections)
1362 {
1363 bfd *dynobj;
1364 Elf_Internal_Shdr *symtab_hdr;
1365 struct elf_link_hash_entry **sym_hashes;
1366 bfd_vma plt_index;
1367 bfd_vma got_offset;
1368 asection *sgot;
1369 asection *splt;
1370 asection *sgotplt;
1371 asection *sreloc;
1372 Elf_Internal_Rela *rel;
1373 Elf_Internal_Rela *relend;
1374
1375 dynobj = elf_hash_table (info)->dynobj;
1376 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1377 sym_hashes = elf_sym_hashes (input_bfd);
1378
1379 sgot = NULL;
1380 splt = NULL;
1381 sgotplt = NULL;
1382 sreloc = NULL;
1383
1384 rel = relocs;
1385 relend = relocs + input_section->reloc_count;
1386 for (; rel < relend; rel++)
1387 {
1388 int r_type;
1389 reloc_howto_type *howto;
1390 unsigned long r_symndx;
1391 struct elf_link_hash_entry *h;
1392 Elf_Internal_Sym *sym;
1393 asection *sec;
1394 bfd_vma relocation;
1395 bfd_reloc_status_type r;
1396
1397 r_type = ELF32_R_TYPE (rel->r_info);
1398 if (r_type < 0 || r_type >= (int) R_VAX_max)
1399 {
1400 bfd_set_error (bfd_error_bad_value);
1401 return FALSE;
1402 }
1403 howto = howto_table + r_type;
1404
1405 r_symndx = ELF32_R_SYM (rel->r_info);
1406 h = NULL;
1407 sym = NULL;
1408 sec = NULL;
1409 if (r_symndx < symtab_hdr->sh_info)
1410 {
1411 sym = local_syms + r_symndx;
1412 sec = local_sections[r_symndx];
1413 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1414 }
1415 else
1416 {
1417 bfd_boolean unresolved_reloc;
1418 bfd_boolean warned, ignored;
1419
1420 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1421 r_symndx, symtab_hdr, sym_hashes,
1422 h, sec, relocation,
1423 unresolved_reloc, warned, ignored);
1424
1425 if ((h->root.type == bfd_link_hash_defined
1426 || h->root.type == bfd_link_hash_defweak)
1427 && ((r_type == R_VAX_PLT32
1428 && h->plt.offset != (bfd_vma) -1
1429 && !h->forced_local
1430 && elf_hash_table (info)->dynamic_sections_created)
1431 || (r_type == R_VAX_GOT32
1432 && h->got.offset != (bfd_vma) -1
1433 && !h->forced_local
1434 && elf_hash_table (info)->dynamic_sections_created
1435 && (! info->shared
1436 || (! info->symbolic && h->dynindx != -1)
1437 || !h->def_regular))
1438 || (info->shared
1439 && ((! info->symbolic && h->dynindx != -1)
1440 || !h->def_regular)
1441 && ((input_section->flags & SEC_ALLOC) != 0
1442 /* DWARF will emit R_VAX_32 relocations in its
1443 sections against symbols defined externally
1444 in shared libraries. We can't do anything
1445 with them here. */
1446
1447 || ((input_section->flags & SEC_DEBUGGING) != 0
1448 && h->def_dynamic))
1449 && (r_type == R_VAX_8
1450 || r_type == R_VAX_16
1451 || r_type == R_VAX_32))))
1452 /* In these cases, we don't need the relocation
1453 value. We check specially because in some
1454 obscure cases sec->output_section will be NULL. */
1455 relocation = 0;
1456 }
1457
1458 if (sec != NULL && discarded_section (sec))
1459 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1460 rel, 1, relend, howto, 0, contents);
1461
1462 if (info->relocatable)
1463 continue;
1464
1465 switch (r_type)
1466 {
1467 case R_VAX_GOT32:
1468 /* Relocation is to the address of the entry for this symbol
1469 in the global offset table. */
1470
1471 /* Resolve a GOTxx reloc against a local symbol directly,
1472 without using the global offset table. */
1473 if (h == NULL
1474 || h->got.offset == (bfd_vma) -1)
1475 break;
1476
1477 {
1478 bfd_vma off;
1479
1480 if (sgot == NULL)
1481 {
1482 sgot = bfd_get_linker_section (dynobj, ".got");
1483 BFD_ASSERT (sgot != NULL);
1484 }
1485
1486 off = h->got.offset;
1487 BFD_ASSERT (off < sgot->size);
1488
1489 bfd_put_32 (output_bfd, rel->r_addend, sgot->contents + off);
1490
1491 relocation = sgot->output_offset + off;
1492 /* The GOT relocation uses the addend. */
1493 rel->r_addend = 0;
1494
1495 /* Change the reference to be indirect. */
1496 contents[rel->r_offset - 1] |= 0x10;
1497 relocation += sgot->output_section->vma;
1498 }
1499 break;
1500
1501 case R_VAX_PC32:
1502 /* If we are creating an executable and the function this
1503 reloc refers to is in a shared lib, then we made a PLT
1504 entry for this symbol and need to handle the reloc like
1505 a PLT reloc. */
1506 if (info->shared)
1507 goto r_vax_pc32_shared;
1508 /* Fall through. */
1509 case R_VAX_PLT32:
1510 /* Relocation is to the entry for this symbol in the
1511 procedure linkage table. */
1512
1513 /* Resolve a PLTxx reloc against a local symbol directly,
1514 without using the procedure linkage table. */
1515 if (h == NULL
1516 || h->plt.offset == (bfd_vma) -1)
1517 break;
1518
1519 if (splt == NULL)
1520 {
1521 splt = bfd_get_linker_section (dynobj, ".plt");
1522 BFD_ASSERT (splt != NULL);
1523 }
1524
1525 if (sgotplt == NULL)
1526 {
1527 sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1528 BFD_ASSERT (sgotplt != NULL);
1529 }
1530
1531 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1532
1533 /* Get the offset into the .got table of the entry that
1534 corresponds to this function. Each .got entry is 4 bytes.
1535 The first two are reserved. */
1536 got_offset = (plt_index + 3) * 4;
1537
1538 /* We want the relocation to point into the .got.plt instead
1539 of the plt itself. */
1540 relocation = (sgotplt->output_section->vma
1541 + sgotplt->output_offset
1542 + got_offset);
1543 contents[rel->r_offset-1] |= 0x10; /* make indirect */
1544 if (rel->r_addend == 2)
1545 {
1546 h->plt.offset |= 1;
1547 }
1548 else if (rel->r_addend != 0)
1549 (*_bfd_error_handler)
1550 (_("%s: warning: PLT addend of %d to `%s' from %s section ignored"),
1551 bfd_get_filename (input_bfd), rel->r_addend,
1552 h->root.root.string,
1553 bfd_get_section_name (input_bfd, input_section));
1554 rel->r_addend = 0;
1555
1556 break;
1557
1558 case R_VAX_PC8:
1559 case R_VAX_PC16:
1560 r_vax_pc32_shared:
1561 if (h == NULL
1562 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1563 || h->forced_local)
1564 break;
1565 /* Fall through. */
1566 case R_VAX_8:
1567 case R_VAX_16:
1568 case R_VAX_32:
1569 if (info->shared
1570 && r_symndx != STN_UNDEF
1571 && (input_section->flags & SEC_ALLOC) != 0
1572 && ((r_type != R_VAX_PC8
1573 && r_type != R_VAX_PC16
1574 && r_type != R_VAX_PC32)
1575 || ((input_section->flags & SEC_CODE)
1576 && (!info->symbolic
1577 || (!h->def_regular && h->type != STT_SECTION)))))
1578 {
1579 Elf_Internal_Rela outrel;
1580 bfd_byte *loc;
1581 bfd_boolean skip, relocate;
1582
1583 /* When generating a shared object, these relocations
1584 are copied into the output file to be resolved at run
1585 time. */
1586 if (sreloc == NULL)
1587 {
1588 sreloc = _bfd_elf_get_dynamic_reloc_section
1589 (input_bfd, input_section, /*rela?*/ TRUE);
1590 if (sreloc == NULL)
1591 return FALSE;
1592 }
1593
1594 skip = FALSE;
1595 relocate = FALSE;
1596
1597 outrel.r_offset =
1598 _bfd_elf_section_offset (output_bfd, info, input_section,
1599 rel->r_offset);
1600 if (outrel.r_offset == (bfd_vma) -1)
1601 skip = TRUE;
1602 if (outrel.r_offset == (bfd_vma) -2)
1603 skip = TRUE, relocate = TRUE;
1604 outrel.r_offset += (input_section->output_section->vma
1605 + input_section->output_offset);
1606
1607 if (skip)
1608 memset (&outrel, 0, sizeof outrel);
1609 /* h->dynindx may be -1 if the symbol was marked to
1610 become local. */
1611 else if (h != NULL
1612 && ((! info->symbolic && h->dynindx != -1)
1613 || !h->def_regular))
1614 {
1615 BFD_ASSERT (h->dynindx != -1);
1616 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1617 outrel.r_addend = relocation + rel->r_addend;
1618 }
1619 else
1620 {
1621 if (r_type == R_VAX_32)
1622 {
1623 relocate = TRUE;
1624 outrel.r_info = ELF32_R_INFO (0, R_VAX_RELATIVE);
1625 BFD_ASSERT (bfd_get_signed_32 (input_bfd,
1626 &contents[rel->r_offset]) == 0);
1627 outrel.r_addend = relocation + rel->r_addend;
1628 }
1629 else
1630 {
1631 long indx;
1632
1633 if (bfd_is_abs_section (sec))
1634 indx = 0;
1635 else if (sec == NULL || sec->owner == NULL)
1636 {
1637 bfd_set_error (bfd_error_bad_value);
1638 return FALSE;
1639 }
1640 else
1641 {
1642 asection *osec;
1643
1644 /* We are turning this relocation into one
1645 against a section symbol. It would be
1646 proper to subtract the symbol's value,
1647 osec->vma, from the emitted reloc addend,
1648 but ld.so expects buggy relocs. */
1649 osec = sec->output_section;
1650 indx = elf_section_data (osec)->dynindx;
1651 if (indx == 0)
1652 {
1653 struct elf_link_hash_table *htab;
1654 htab = elf_hash_table (info);
1655 osec = htab->text_index_section;
1656 indx = elf_section_data (osec)->dynindx;
1657 }
1658 BFD_ASSERT (indx != 0);
1659 }
1660
1661 outrel.r_info = ELF32_R_INFO (indx, r_type);
1662 outrel.r_addend = relocation + rel->r_addend;
1663 }
1664 }
1665
1666 if ((input_section->flags & SEC_CODE) != 0
1667 || (ELF32_R_TYPE (outrel.r_info) != R_VAX_32
1668 && ELF32_R_TYPE (outrel.r_info) != R_VAX_RELATIVE
1669 && ELF32_R_TYPE (outrel.r_info) != R_VAX_COPY
1670 && ELF32_R_TYPE (outrel.r_info) != R_VAX_JMP_SLOT
1671 && ELF32_R_TYPE (outrel.r_info) != R_VAX_GLOB_DAT))
1672 {
1673 if (h != NULL)
1674 (*_bfd_error_handler)
1675 (_("%s: warning: %s relocation against symbol `%s' from %s section"),
1676 bfd_get_filename (input_bfd), howto->name,
1677 h->root.root.string,
1678 bfd_get_section_name (input_bfd, input_section));
1679 else
1680 (*_bfd_error_handler)
1681 (_("%s: warning: %s relocation to 0x%x from %s section"),
1682 bfd_get_filename (input_bfd), howto->name,
1683 outrel.r_addend,
1684 bfd_get_section_name (input_bfd, input_section));
1685 }
1686 loc = sreloc->contents;
1687 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1688 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1689
1690 /* This reloc will be computed at runtime, so there's no
1691 need to do anything now, except for R_VAX_32
1692 relocations that have been turned into
1693 R_VAX_RELATIVE. */
1694 if (!relocate)
1695 continue;
1696 }
1697
1698 break;
1699
1700 case R_VAX_GNU_VTINHERIT:
1701 case R_VAX_GNU_VTENTRY:
1702 /* These are no-ops in the end. */
1703 continue;
1704
1705 default:
1706 break;
1707 }
1708
1709 /* VAX PCREL relocations are from the end of relocation, not the start.
1710 So subtract the difference from the relocation amount since we can't
1711 add it to the offset. */
1712 if (howto->pc_relative && howto->pcrel_offset)
1713 relocation -= bfd_get_reloc_size(howto);
1714
1715 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1716 contents, rel->r_offset,
1717 relocation, rel->r_addend);
1718
1719 if (r != bfd_reloc_ok)
1720 {
1721 switch (r)
1722 {
1723 default:
1724 case bfd_reloc_outofrange:
1725 abort ();
1726 case bfd_reloc_overflow:
1727 {
1728 const char *name;
1729
1730 if (h != NULL)
1731 name = NULL;
1732 else
1733 {
1734 name = bfd_elf_string_from_elf_section (input_bfd,
1735 symtab_hdr->sh_link,
1736 sym->st_name);
1737 if (name == NULL)
1738 return FALSE;
1739 if (*name == '\0')
1740 name = bfd_section_name (input_bfd, sec);
1741 }
1742 if (!(info->callbacks->reloc_overflow
1743 (info, (h ? &h->root : NULL), name, howto->name,
1744 (bfd_vma) 0, input_bfd, input_section,
1745 rel->r_offset)))
1746 return FALSE;
1747 }
1748 break;
1749 }
1750 }
1751 }
1752
1753 return TRUE;
1754 }
1755
1756 /* Finish up dynamic symbol handling. We set the contents of various
1757 dynamic sections here. */
1758
1759 static bfd_boolean
1760 elf_vax_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
1761 struct elf_link_hash_entry *h,
1762 Elf_Internal_Sym *sym)
1763 {
1764 bfd *dynobj;
1765
1766 dynobj = elf_hash_table (info)->dynobj;
1767
1768 if (h->plt.offset != (bfd_vma) -1)
1769 {
1770 asection *splt;
1771 asection *sgot;
1772 asection *srela;
1773 bfd_vma plt_index;
1774 bfd_vma got_offset;
1775 bfd_vma addend;
1776 Elf_Internal_Rela rela;
1777 bfd_byte *loc;
1778
1779 /* This symbol has an entry in the procedure linkage table. Set
1780 it up. */
1781 BFD_ASSERT (h->dynindx != -1);
1782
1783 splt = bfd_get_linker_section (dynobj, ".plt");
1784 sgot = bfd_get_linker_section (dynobj, ".got.plt");
1785 srela = bfd_get_linker_section (dynobj, ".rela.plt");
1786 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1787
1788 addend = 2 * (h->plt.offset & 1);
1789 h->plt.offset &= ~1;
1790
1791 /* Get the index in the procedure linkage table which
1792 corresponds to this symbol. This is the index of this symbol
1793 in all the symbols for which we are making plt entries. The
1794 first entry in the procedure linkage table is reserved. */
1795 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1796
1797 /* Get the offset into the .got table of the entry that
1798 corresponds to this function. Each .got entry is 4 bytes.
1799 The first two are reserved. */
1800 got_offset = (plt_index + 3) * 4;
1801
1802 /* Fill in the entry in the procedure linkage table. */
1803 memcpy (splt->contents + h->plt.offset, elf_vax_plt_entry,
1804 PLT_ENTRY_SIZE);
1805
1806 /* The offset is relative to the first extension word. */
1807 bfd_put_32 (output_bfd,
1808 -(h->plt.offset + 8),
1809 splt->contents + h->plt.offset + 4);
1810
1811 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
1812 splt->contents + h->plt.offset + 8);
1813
1814 /* Fill in the entry in the global offset table. */
1815 bfd_put_32 (output_bfd,
1816 (splt->output_section->vma
1817 + splt->output_offset
1818 + h->plt.offset) + addend,
1819 sgot->contents + got_offset);
1820
1821 /* Fill in the entry in the .rela.plt section. */
1822 rela.r_offset = (sgot->output_section->vma
1823 + sgot->output_offset
1824 + got_offset);
1825 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_JMP_SLOT);
1826 rela.r_addend = addend;
1827 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
1828 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1829
1830 if (!h->def_regular)
1831 {
1832 /* Mark the symbol as undefined, rather than as defined in
1833 the .plt section. Leave the value alone. */
1834 sym->st_shndx = SHN_UNDEF;
1835 }
1836 }
1837
1838 if (h->got.offset != (bfd_vma) -1)
1839 {
1840 asection *sgot;
1841 asection *srela;
1842 Elf_Internal_Rela rela;
1843 bfd_byte *loc;
1844
1845 /* This symbol has an entry in the global offset table. Set it
1846 up. */
1847 sgot = bfd_get_linker_section (dynobj, ".got");
1848 srela = bfd_get_linker_section (dynobj, ".rela.got");
1849 BFD_ASSERT (sgot != NULL && srela != NULL);
1850
1851 rela.r_offset = (sgot->output_section->vma
1852 + sgot->output_offset
1853 + h->got.offset);
1854 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_GLOB_DAT);
1855 rela.r_addend = bfd_get_signed_32 (output_bfd,
1856 sgot->contents + h->got.offset);
1857
1858 loc = srela->contents;
1859 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1860 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1861 }
1862
1863 if (h->needs_copy)
1864 {
1865 asection *s;
1866 Elf_Internal_Rela rela;
1867 bfd_byte *loc;
1868
1869 /* This symbol needs a copy reloc. Set it up. */
1870 BFD_ASSERT (h->dynindx != -1
1871 && (h->root.type == bfd_link_hash_defined
1872 || h->root.type == bfd_link_hash_defweak));
1873
1874 s = bfd_get_linker_section (dynobj, ".rela.bss");
1875 BFD_ASSERT (s != NULL);
1876
1877 rela.r_offset = (h->root.u.def.value
1878 + h->root.u.def.section->output_section->vma
1879 + h->root.u.def.section->output_offset);
1880 rela.r_info = ELF32_R_INFO (h->dynindx, R_VAX_COPY);
1881 rela.r_addend = 0;
1882 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1883 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1884 }
1885
1886 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1887 if (h == elf_hash_table (info)->hdynamic
1888 || h == elf_hash_table (info)->hgot)
1889 sym->st_shndx = SHN_ABS;
1890
1891 return TRUE;
1892 }
1893
1894 /* Finish up the dynamic sections. */
1895
1896 static bfd_boolean
1897 elf_vax_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
1898 {
1899 bfd *dynobj;
1900 asection *sgot;
1901 asection *sdyn;
1902
1903 dynobj = elf_hash_table (info)->dynobj;
1904
1905 sgot = bfd_get_linker_section (dynobj, ".got.plt");
1906 BFD_ASSERT (sgot != NULL);
1907 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
1908
1909 if (elf_hash_table (info)->dynamic_sections_created)
1910 {
1911 asection *splt;
1912 Elf32_External_Dyn *dyncon, *dynconend;
1913
1914 splt = bfd_get_linker_section (dynobj, ".plt");
1915 BFD_ASSERT (splt != NULL && sdyn != NULL);
1916
1917 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1918 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1919 for (; dyncon < dynconend; dyncon++)
1920 {
1921 Elf_Internal_Dyn dyn;
1922 const char *name;
1923 asection *s;
1924
1925 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1926
1927 switch (dyn.d_tag)
1928 {
1929 default:
1930 break;
1931
1932 case DT_PLTGOT:
1933 name = ".got";
1934 goto get_vma;
1935 case DT_JMPREL:
1936 name = ".rela.plt";
1937 get_vma:
1938 s = bfd_get_section_by_name (output_bfd, name);
1939 BFD_ASSERT (s != NULL);
1940 dyn.d_un.d_ptr = s->vma;
1941 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1942 break;
1943
1944 case DT_PLTRELSZ:
1945 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1946 BFD_ASSERT (s != NULL);
1947 dyn.d_un.d_val = s->size;
1948 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1949 break;
1950
1951 case DT_RELASZ:
1952 /* The procedure linkage table relocs (DT_JMPREL) should
1953 not be included in the overall relocs (DT_RELA).
1954 Therefore, we override the DT_RELASZ entry here to
1955 make it not include the JMPREL relocs. Since the
1956 linker script arranges for .rela.plt to follow all
1957 other relocation sections, we don't have to worry
1958 about changing the DT_RELA entry. */
1959 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1960 if (s != NULL)
1961 dyn.d_un.d_val -= s->size;
1962 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1963 break;
1964 }
1965 }
1966
1967 /* Fill in the first entry in the procedure linkage table. */
1968 if (splt->size > 0)
1969 {
1970 memcpy (splt->contents, elf_vax_plt0_entry, PLT_ENTRY_SIZE);
1971 bfd_put_32 (output_bfd,
1972 (sgot->output_section->vma
1973 + sgot->output_offset + 4
1974 - (splt->output_section->vma + 6)),
1975 splt->contents + 2);
1976 bfd_put_32 (output_bfd,
1977 (sgot->output_section->vma
1978 + sgot->output_offset + 8
1979 - (splt->output_section->vma + 12)),
1980 splt->contents + 8);
1981 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1982 = PLT_ENTRY_SIZE;
1983 }
1984 }
1985
1986 /* Fill in the first three entries in the global offset table. */
1987 if (sgot->size > 0)
1988 {
1989 if (sdyn == NULL)
1990 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1991 else
1992 bfd_put_32 (output_bfd,
1993 sdyn->output_section->vma + sdyn->output_offset,
1994 sgot->contents);
1995 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1996 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1997 }
1998
1999 if (elf_section_data (sgot->output_section) != NULL)
2000 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2001
2002 return TRUE;
2003 }
2004
2005 static enum elf_reloc_type_class
2006 elf_vax_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2007 const asection *rel_sec ATTRIBUTE_UNUSED,
2008 const Elf_Internal_Rela *rela)
2009 {
2010 switch ((int) ELF32_R_TYPE (rela->r_info))
2011 {
2012 case R_VAX_RELATIVE:
2013 return reloc_class_relative;
2014 case R_VAX_JMP_SLOT:
2015 return reloc_class_plt;
2016 case R_VAX_COPY:
2017 return reloc_class_copy;
2018 default:
2019 return reloc_class_normal;
2020 }
2021 }
2022
2023 static bfd_vma
2024 elf_vax_plt_sym_val (bfd_vma i, const asection *plt,
2025 const arelent *rel ATTRIBUTE_UNUSED)
2026 {
2027 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
2028 }
2029
2030 #define TARGET_LITTLE_SYM vax_elf32_vec
2031 #define TARGET_LITTLE_NAME "elf32-vax"
2032 #define ELF_MACHINE_CODE EM_VAX
2033 #define ELF_MAXPAGESIZE 0x1000
2034
2035 #define elf_backend_create_dynamic_sections \
2036 _bfd_elf_create_dynamic_sections
2037 #define bfd_elf32_bfd_link_hash_table_create \
2038 elf_vax_link_hash_table_create
2039 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
2040
2041 #define elf_backend_check_relocs elf_vax_check_relocs
2042 #define elf_backend_adjust_dynamic_symbol \
2043 elf_vax_adjust_dynamic_symbol
2044 #define elf_backend_always_size_sections \
2045 elf_vax_always_size_sections
2046 #define elf_backend_size_dynamic_sections \
2047 elf_vax_size_dynamic_sections
2048 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
2049 #define elf_backend_relocate_section elf_vax_relocate_section
2050 #define elf_backend_finish_dynamic_symbol \
2051 elf_vax_finish_dynamic_symbol
2052 #define elf_backend_finish_dynamic_sections \
2053 elf_vax_finish_dynamic_sections
2054 #define elf_backend_reloc_type_class elf_vax_reloc_type_class
2055 #define elf_backend_gc_mark_hook elf_vax_gc_mark_hook
2056 #define elf_backend_gc_sweep_hook elf_vax_gc_sweep_hook
2057 #define elf_backend_plt_sym_val elf_vax_plt_sym_val
2058 #define bfd_elf32_bfd_merge_private_bfd_data \
2059 elf32_vax_merge_private_bfd_data
2060 #define bfd_elf32_bfd_set_private_flags \
2061 elf32_vax_set_private_flags
2062 #define bfd_elf32_bfd_print_private_bfd_data \
2063 elf32_vax_print_private_bfd_data
2064
2065 #define elf_backend_can_gc_sections 1
2066 #define elf_backend_want_got_plt 1
2067 #define elf_backend_plt_readonly 1
2068 #define elf_backend_want_plt_sym 0
2069 #define elf_backend_got_header_size 16
2070 #define elf_backend_rela_normal 1
2071
2072 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.079802 seconds and 5 git commands to generate.