* infcall.c (call_function_by_hand): Check for function pointer
[deliverable/binutils-gdb.git] / bfd / sunos.c
CommitLineData
252b5132 1/* BFD backend for SunOS binaries.
9553c638 2 Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
66eb6687 3 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
252b5132
RH
4 Written by Cygnus Support.
5
116c20d2 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
116c20d2
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
252b5132 12
116c20d2
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
116c20d2
NC
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
3e110533 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH
21
22#define TARGETNAME "a.out-sunos-big"
e43d48cc
AM
23
24/* Do not "beautify" the CONCAT* macro args. Traditional C will not
25 remove whitespace added here, and thus will fail to concatenate
26 the tokens. */
27#define MY(OP) CONCAT2 (sunos_big_,OP)
252b5132
RH
28
29#include "bfd.h"
30#include "bfdlink.h"
31#include "libaout.h"
32
252b5132
RH
33/* ??? Where should this go? */
34#define MACHTYPE_OK(mtype) \
35 (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \
36 || ((mtype) == M_SPARCLET \
37 && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
38 || ((mtype) == M_SPARCLITE_LE \
39 && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
40 || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \
41 && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL))
42
116c20d2
NC
43#define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound
44#define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab
45#define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab
46#define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound
47#define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc
48#define MY_bfd_link_hash_table_create sunos_link_hash_table_create
49#define MY_add_dynamic_symbols sunos_add_dynamic_symbols
50#define MY_add_one_symbol sunos_add_one_symbol
51#define MY_link_dynamic_object sunos_link_dynamic_object
52#define MY_write_dynamic_symbol sunos_write_dynamic_symbol
53#define MY_check_dynamic_reloc sunos_check_dynamic_reloc
54#define MY_finish_dynamic_link sunos_finish_dynamic_link
55
56static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **);
57static bfd_boolean sunos_add_one_symbol (struct bfd_link_info *, bfd *, const char *, flagword, asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, struct bfd_link_hash_entry **);
58static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *);
59static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
60static bfd_boolean sunos_check_dynamic_reloc (struct bfd_link_info *, bfd *, asection *, struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, bfd_vma *);
61static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *);
62static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *);
63static long sunos_get_dynamic_symtab_upper_bound (bfd *);
64static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **);
65static long sunos_get_dynamic_reloc_upper_bound (bfd *);
66static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
67
252b5132
RH
68/* Include the usual a.out support. */
69#include "aoutf1.h"
70
71/* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */
72#undef valid
73
74/* SunOS shared library support. We store a pointer to this structure
75 in obj_aout_dynamic_info (abfd). */
76
77struct sunos_dynamic_info
78{
79 /* Whether we found any dynamic information. */
b34976b6 80 bfd_boolean valid;
252b5132
RH
81 /* Dynamic information. */
82 struct internal_sun4_dynamic_link dyninfo;
83 /* Number of dynamic symbols. */
84 unsigned long dynsym_count;
85 /* Read in nlists for dynamic symbols. */
86 struct external_nlist *dynsym;
87 /* asymbol structures for dynamic symbols. */
88 aout_symbol_type *canonical_dynsym;
89 /* Read in dynamic string table. */
90 char *dynstr;
91 /* Number of dynamic relocs. */
92 unsigned long dynrel_count;
93 /* Read in dynamic relocs. This may be reloc_std_external or
94 reloc_ext_external. */
116c20d2 95 void * dynrel;
252b5132
RH
96 /* arelent structures for dynamic relocs. */
97 arelent *canonical_dynrel;
98};
99
100/* The hash table of dynamic symbols is composed of two word entries.
101 See include/aout/sun4.h for details. */
102
103#define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD)
104
105/* Read in the basic dynamic information. This locates the __DYNAMIC
106 structure and uses it to find the dynamic_link structure. It
107 creates and saves a sunos_dynamic_info structure. If it can't find
108 __DYNAMIC, it sets the valid field of the sunos_dynamic_info
b34976b6 109 structure to FALSE to avoid doing this work again. */
252b5132 110
b34976b6 111static bfd_boolean
116c20d2 112sunos_read_dynamic_info (bfd *abfd)
252b5132
RH
113{
114 struct sunos_dynamic_info *info;
115 asection *dynsec;
116 bfd_vma dynoff;
117 struct external_sun4_dynamic dyninfo;
118 unsigned long dynver;
119 struct external_sun4_dynamic_link linkinfo;
dc810e39 120 bfd_size_type amt;
252b5132 121
116c20d2 122 if (obj_aout_dynamic_info (abfd) != NULL)
b34976b6 123 return TRUE;
252b5132
RH
124
125 if ((abfd->flags & DYNAMIC) == 0)
126 {
127 bfd_set_error (bfd_error_invalid_operation);
b34976b6 128 return FALSE;
252b5132
RH
129 }
130
dc810e39 131 amt = sizeof (struct sunos_dynamic_info);
116c20d2 132 info = bfd_zalloc (abfd, amt);
252b5132 133 if (!info)
b34976b6
AM
134 return FALSE;
135 info->valid = FALSE;
252b5132
RH
136 info->dynsym = NULL;
137 info->dynstr = NULL;
138 info->canonical_dynsym = NULL;
139 info->dynrel = NULL;
140 info->canonical_dynrel = NULL;
116c20d2 141 obj_aout_dynamic_info (abfd) = (void *) info;
252b5132
RH
142
143 /* This code used to look for the __DYNAMIC symbol to locate the dynamic
144 linking information.
145 However this inhibits recovering the dynamic symbols from a
146 stripped object file, so blindly assume that the dynamic linking
147 information is located at the start of the data section.
148 We could verify this assumption later by looking through the dynamic
149 symbols for the __DYNAMIC symbol. */
150 if ((abfd->flags & DYNAMIC) == 0)
b34976b6 151 return TRUE;
116c20d2 152 if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo,
dc810e39
AM
153 (file_ptr) 0,
154 (bfd_size_type) sizeof dyninfo))
b34976b6 155 return TRUE;
252b5132
RH
156
157 dynver = GET_WORD (abfd, dyninfo.ld_version);
158 if (dynver != 2 && dynver != 3)
b34976b6 159 return TRUE;
252b5132
RH
160
161 dynoff = GET_WORD (abfd, dyninfo.ld);
162
163 /* dynoff is a virtual address. It is probably always in the .data
164 section, but this code should work even if it moves. */
165 if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
166 dynsec = obj_textsec (abfd);
167 else
168 dynsec = obj_datasec (abfd);
169 dynoff -= bfd_get_section_vma (abfd, dynsec);
eea6121a 170 if (dynoff > dynsec->size)
b34976b6 171 return TRUE;
252b5132
RH
172
173 /* This executable appears to be dynamically linked in a way that we
174 can understand. */
116c20d2 175 if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo,
dc810e39 176 (file_ptr) dynoff,
252b5132 177 (bfd_size_type) sizeof linkinfo))
b34976b6 178 return TRUE;
252b5132
RH
179
180 /* Swap in the dynamic link information. */
181 info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
182 info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
183 info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
184 info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
185 info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
186 info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
187 info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
188 info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
189 info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
190 info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
191 info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
192 info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
193 info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
194 info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
195
196 /* Reportedly the addresses need to be offset by the size of the
197 exec header in an NMAGIC file. */
198 if (adata (abfd).magic == n_magic)
199 {
200 unsigned long exec_bytes_size = adata (abfd).exec_bytes_size;
201
202 info->dyninfo.ld_need += exec_bytes_size;
203 info->dyninfo.ld_rules += exec_bytes_size;
204 info->dyninfo.ld_rel += exec_bytes_size;
205 info->dyninfo.ld_hash += exec_bytes_size;
206 info->dyninfo.ld_stab += exec_bytes_size;
207 info->dyninfo.ld_symbols += exec_bytes_size;
208 }
209
210 /* The only way to get the size of the symbol information appears to
211 be to determine the distance between it and the string table. */
212 info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
213 / EXTERNAL_NLIST_SIZE);
214 BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
215 == (unsigned long) (info->dyninfo.ld_symbols
216 - info->dyninfo.ld_stab));
217
218 /* Similarly, the relocs end at the hash table. */
219 info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
220 / obj_reloc_entry_size (abfd));
221 BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
222 == (unsigned long) (info->dyninfo.ld_hash
223 - info->dyninfo.ld_rel));
224
b34976b6 225 info->valid = TRUE;
252b5132 226
b34976b6 227 return TRUE;
252b5132
RH
228}
229
230/* Return the amount of memory required for the dynamic symbols. */
231
232static long
116c20d2 233sunos_get_dynamic_symtab_upper_bound (bfd *abfd)
252b5132
RH
234{
235 struct sunos_dynamic_info *info;
236
237 if (! sunos_read_dynamic_info (abfd))
238 return -1;
239
240 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
241 if (! info->valid)
242 {
243 bfd_set_error (bfd_error_no_symbols);
244 return -1;
245 }
246
247 return (info->dynsym_count + 1) * sizeof (asymbol *);
248}
249
250/* Read the external dynamic symbols. */
251
b34976b6 252static bfd_boolean
116c20d2 253sunos_slurp_dynamic_symtab (bfd *abfd)
252b5132
RH
254{
255 struct sunos_dynamic_info *info;
dc810e39 256 bfd_size_type amt;
252b5132
RH
257
258 /* Get the general dynamic information. */
259 if (obj_aout_dynamic_info (abfd) == NULL)
260 {
261 if (! sunos_read_dynamic_info (abfd))
b34976b6 262 return FALSE;
252b5132
RH
263 }
264
265 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
266 if (! info->valid)
267 {
268 bfd_set_error (bfd_error_no_symbols);
b34976b6 269 return FALSE;
252b5132
RH
270 }
271
272 /* Get the dynamic nlist structures. */
116c20d2 273 if (info->dynsym == NULL)
252b5132 274 {
dc810e39 275 amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE;
116c20d2 276 info->dynsym = bfd_alloc (abfd, amt);
252b5132 277 if (info->dynsym == NULL && info->dynsym_count != 0)
b34976b6 278 return FALSE;
dc810e39 279 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0
116c20d2 280 || bfd_bread ((void *) info->dynsym, amt, abfd) != amt)
252b5132
RH
281 {
282 if (info->dynsym != NULL)
283 {
284 bfd_release (abfd, info->dynsym);
285 info->dynsym = NULL;
286 }
b34976b6 287 return FALSE;
252b5132
RH
288 }
289 }
290
291 /* Get the dynamic strings. */
116c20d2 292 if (info->dynstr == NULL)
252b5132 293 {
dc810e39 294 amt = info->dyninfo.ld_symb_size;
116c20d2 295 info->dynstr = bfd_alloc (abfd, amt);
252b5132 296 if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0)
b34976b6 297 return FALSE;
dc810e39 298 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0
116c20d2 299 || bfd_bread ((void *) info->dynstr, amt, abfd) != amt)
252b5132
RH
300 {
301 if (info->dynstr != NULL)
302 {
303 bfd_release (abfd, info->dynstr);
304 info->dynstr = NULL;
305 }
b34976b6 306 return FALSE;
252b5132
RH
307 }
308 }
309
b34976b6 310 return TRUE;
252b5132
RH
311}
312
313/* Read in the dynamic symbols. */
314
315static long
116c20d2 316sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage)
252b5132
RH
317{
318 struct sunos_dynamic_info *info;
319 unsigned long i;
320
321 if (! sunos_slurp_dynamic_symtab (abfd))
322 return -1;
323
324 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
325
326#ifdef CHECK_DYNAMIC_HASH
327 /* Check my understanding of the dynamic hash table by making sure
328 that each symbol can be located in the hash table. */
329 {
330 bfd_size_type table_size;
331 bfd_byte *table;
332 bfd_size_type i;
333
334 if (info->dyninfo.ld_buckets > info->dynsym_count)
335 abort ();
336 table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
116c20d2 337 table = bfd_malloc (table_size);
252b5132
RH
338 if (table == NULL && table_size != 0)
339 abort ();
dc810e39 340 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0
116c20d2 341 || bfd_bread ((void *) table, table_size, abfd) != table_size)
252b5132
RH
342 abort ();
343 for (i = 0; i < info->dynsym_count; i++)
344 {
345 unsigned char *name;
346 unsigned long hash;
347
348 name = ((unsigned char *) info->dynstr
349 + GET_WORD (abfd, info->dynsym[i].e_strx));
350 hash = 0;
351 while (*name != '\0')
352 hash = (hash << 1) + *name++;
353 hash &= 0x7fffffff;
354 hash %= info->dyninfo.ld_buckets;
355 while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i)
356 {
357 hash = GET_WORD (abfd,
358 table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
359 if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE)
360 abort ();
361 }
362 }
363 free (table);
364 }
365#endif /* CHECK_DYNAMIC_HASH */
366
367 /* Get the asymbol structures corresponding to the dynamic nlist
368 structures. */
116c20d2 369 if (info->canonical_dynsym == NULL)
252b5132 370 {
dc810e39
AM
371 bfd_size_type size;
372 bfd_size_type strsize = info->dyninfo.ld_symb_size;
373
374 size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type);
116c20d2 375 info->canonical_dynsym = bfd_alloc (abfd, size);
252b5132
RH
376 if (info->canonical_dynsym == NULL && info->dynsym_count != 0)
377 return -1;
378
379 if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym,
dc810e39
AM
380 info->dynsym,
381 (bfd_size_type) info->dynsym_count,
b34976b6 382 info->dynstr, strsize, TRUE))
252b5132
RH
383 {
384 if (info->canonical_dynsym != NULL)
385 {
386 bfd_release (abfd, info->canonical_dynsym);
387 info->canonical_dynsym = NULL;
388 }
389 return -1;
390 }
391 }
392
393 /* Return pointers to the dynamic asymbol structures. */
394 for (i = 0; i < info->dynsym_count; i++)
395 *storage++ = (asymbol *) (info->canonical_dynsym + i);
396 *storage = NULL;
397
398 return info->dynsym_count;
399}
400
401/* Return the amount of memory required for the dynamic relocs. */
402
403static long
116c20d2 404sunos_get_dynamic_reloc_upper_bound (bfd *abfd)
252b5132
RH
405{
406 struct sunos_dynamic_info *info;
407
408 if (! sunos_read_dynamic_info (abfd))
409 return -1;
410
411 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
412 if (! info->valid)
413 {
414 bfd_set_error (bfd_error_no_symbols);
415 return -1;
416 }
417
418 return (info->dynrel_count + 1) * sizeof (arelent *);
419}
420
421/* Read in the dynamic relocs. */
422
423static long
116c20d2 424sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms)
252b5132
RH
425{
426 struct sunos_dynamic_info *info;
427 unsigned long i;
dc810e39 428 bfd_size_type size;
252b5132
RH
429
430 /* Get the general dynamic information. */
116c20d2 431 if (obj_aout_dynamic_info (abfd) == NULL)
252b5132
RH
432 {
433 if (! sunos_read_dynamic_info (abfd))
434 return -1;
435 }
436
437 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
438 if (! info->valid)
439 {
440 bfd_set_error (bfd_error_no_symbols);
441 return -1;
442 }
443
444 /* Get the dynamic reloc information. */
445 if (info->dynrel == NULL)
446 {
dc810e39 447 size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd);
116c20d2 448 info->dynrel = bfd_alloc (abfd, size);
dc810e39 449 if (info->dynrel == NULL && size != 0)
252b5132 450 return -1;
dc810e39 451 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0
116c20d2 452 || bfd_bread ((void *) info->dynrel, size, abfd) != size)
252b5132
RH
453 {
454 if (info->dynrel != NULL)
455 {
456 bfd_release (abfd, info->dynrel);
457 info->dynrel = NULL;
458 }
459 return -1;
460 }
461 }
462
463 /* Get the arelent structures corresponding to the dynamic reloc
464 information. */
116c20d2 465 if (info->canonical_dynrel == NULL)
252b5132
RH
466 {
467 arelent *to;
468
dc810e39 469 size = (bfd_size_type) info->dynrel_count * sizeof (arelent);
116c20d2 470 info->canonical_dynrel = bfd_alloc (abfd, size);
252b5132
RH
471 if (info->canonical_dynrel == NULL && info->dynrel_count != 0)
472 return -1;
7b82c249 473
252b5132
RH
474 to = info->canonical_dynrel;
475
476 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
477 {
116c20d2 478 struct reloc_ext_external *p;
252b5132
RH
479 struct reloc_ext_external *pend;
480
481 p = (struct reloc_ext_external *) info->dynrel;
482 pend = p + info->dynrel_count;
483 for (; p < pend; p++, to++)
116c20d2
NC
484 NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms,
485 (bfd_size_type) info->dynsym_count);
252b5132
RH
486 }
487 else
488 {
116c20d2 489 struct reloc_std_external *p;
252b5132
RH
490 struct reloc_std_external *pend;
491
492 p = (struct reloc_std_external *) info->dynrel;
493 pend = p + info->dynrel_count;
494 for (; p < pend; p++, to++)
116c20d2
NC
495 NAME (aout, swap_std_reloc_in) (abfd, p, to, syms,
496 (bfd_size_type) info->dynsym_count);
252b5132
RH
497 }
498 }
499
500 /* Return pointers to the dynamic arelent structures. */
501 for (i = 0; i < info->dynrel_count; i++)
502 *storage++ = info->canonical_dynrel + i;
503 *storage = NULL;
504
505 return info->dynrel_count;
506}
507\f
508/* Code to handle linking of SunOS shared libraries. */
509
510/* A SPARC procedure linkage table entry is 12 bytes. The first entry
511 in the table is a jump which is filled in by the runtime linker.
512 The remaining entries are branches back to the first entry,
513 followed by an index into the relocation table encoded to look like
514 a sethi of %g0. */
515
516#define SPARC_PLT_ENTRY_SIZE (12)
517
518static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] =
519{
520 /* sethi %hi(0),%g1; address filled in by runtime linker. */
521 0x3, 0, 0, 0,
522 /* jmp %g1; offset filled in by runtime linker. */
523 0x81, 0xc0, 0x60, 0,
524 /* nop */
525 0x1, 0, 0, 0
526};
527
528/* save %sp, -96, %sp */
dc810e39 529#define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0)
252b5132 530/* call; address filled in later. */
dc810e39 531#define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000)
252b5132 532/* sethi; reloc index filled in later. */
dc810e39 533#define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000)
252b5132
RH
534
535/* This sequence is used when for the jump table entry to a defined
536 symbol in a complete executable. It is used when linking PIC
537 compiled code which is not being put into a shared library. */
538/* sethi <address to be filled in later>, %g1 */
dc810e39 539#define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000)
252b5132 540/* jmp %g1 + <address to be filled in later> */
dc810e39 541#define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000)
252b5132 542/* nop */
dc810e39 543#define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000)
252b5132
RH
544
545/* An m68k procedure linkage table entry is 8 bytes. The first entry
546 in the table is a jump which is filled in the by the runtime
547 linker. The remaining entries are branches back to the first
548 entry, followed by a two byte index into the relocation table. */
549
550#define M68K_PLT_ENTRY_SIZE (8)
551
552static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] =
553{
554 /* jmps @# */
555 0x4e, 0xf9,
556 /* Filled in by runtime linker with a magic address. */
557 0, 0, 0, 0,
558 /* Not used? */
559 0, 0
560};
561
562/* bsrl */
dc810e39 563#define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff)
252b5132
RH
564/* Remaining words filled in later. */
565
566/* An entry in the SunOS linker hash table. */
567
568struct sunos_link_hash_entry
569{
570 struct aout_link_hash_entry root;
571
572 /* If this is a dynamic symbol, this is its index into the dynamic
573 symbol table. This is initialized to -1. As the linker looks at
574 the input files, it changes this to -2 if it will be added to the
575 dynamic symbol table. After all the input files have been seen,
576 the linker will know whether to build a dynamic symbol table; if
577 it does build one, this becomes the index into the table. */
578 long dynindx;
579
580 /* If this is a dynamic symbol, this is the index of the name in the
581 dynamic symbol string table. */
582 long dynstr_index;
583
584 /* The offset into the global offset table used for this symbol. If
585 the symbol does not require a GOT entry, this is 0. */
586 bfd_vma got_offset;
587
588 /* The offset into the procedure linkage table used for this symbol.
589 If the symbol does not require a PLT entry, this is 0. */
590 bfd_vma plt_offset;
591
592 /* Some linker flags. */
593 unsigned char flags;
594 /* Symbol is referenced by a regular object. */
595#define SUNOS_REF_REGULAR 01
596 /* Symbol is defined by a regular object. */
597#define SUNOS_DEF_REGULAR 02
598 /* Symbol is referenced by a dynamic object. */
599#define SUNOS_REF_DYNAMIC 04
600 /* Symbol is defined by a dynamic object. */
601#define SUNOS_DEF_DYNAMIC 010
602 /* Symbol is a constructor symbol in a regular object. */
603#define SUNOS_CONSTRUCTOR 020
604};
605
606/* The SunOS linker hash table. */
607
608struct sunos_link_hash_table
609{
610 struct aout_link_hash_table root;
611
612 /* The object which holds the dynamic sections. */
613 bfd *dynobj;
614
615 /* Whether we have created the dynamic sections. */
b34976b6 616 bfd_boolean dynamic_sections_created;
252b5132
RH
617
618 /* Whether we need the dynamic sections. */
b34976b6 619 bfd_boolean dynamic_sections_needed;
252b5132
RH
620
621 /* Whether we need the .got table. */
b34976b6 622 bfd_boolean got_needed;
252b5132
RH
623
624 /* The number of dynamic symbols. */
625 size_t dynsymcount;
626
627 /* The number of buckets in the hash table. */
628 size_t bucketcount;
629
630 /* The list of dynamic objects needed by dynamic objects included in
631 the link. */
632 struct bfd_link_needed_list *needed;
633
634 /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */
635 bfd_vma got_base;
636};
637
638/* Routine to create an entry in an SunOS link hash table. */
639
640static struct bfd_hash_entry *
116c20d2
NC
641sunos_link_hash_newfunc (struct bfd_hash_entry *entry,
642 struct bfd_hash_table *table,
643 const char *string)
252b5132
RH
644{
645 struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry;
646
647 /* Allocate the structure if it has not already been allocated by a
648 subclass. */
116c20d2
NC
649 if (ret == NULL)
650 ret = bfd_hash_allocate (table, sizeof (* ret));
651 if (ret == NULL)
652 return NULL;
252b5132
RH
653
654 /* Call the allocation method of the superclass. */
655 ret = ((struct sunos_link_hash_entry *)
116c20d2
NC
656 NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret,
657 table, string));
252b5132
RH
658 if (ret != NULL)
659 {
660 /* Set local fields. */
661 ret->dynindx = -1;
662 ret->dynstr_index = -1;
663 ret->got_offset = 0;
664 ret->plt_offset = 0;
665 ret->flags = 0;
666 }
667
668 return (struct bfd_hash_entry *) ret;
669}
670
671/* Create a SunOS link hash table. */
672
673static struct bfd_link_hash_table *
116c20d2 674sunos_link_hash_table_create (bfd *abfd)
252b5132
RH
675{
676 struct sunos_link_hash_table *ret;
dc810e39 677 bfd_size_type amt = sizeof (struct sunos_link_hash_table);
252b5132 678
116c20d2
NC
679 ret = bfd_malloc (amt);
680 if (ret == NULL)
681 return NULL;
66eb6687
AM
682 if (!NAME (aout, link_hash_table_init) (&ret->root, abfd,
683 sunos_link_hash_newfunc,
684 sizeof (struct sunos_link_hash_entry)))
252b5132 685 {
e2d34d7d 686 free (ret);
116c20d2 687 return NULL;
252b5132
RH
688 }
689
690 ret->dynobj = NULL;
b34976b6
AM
691 ret->dynamic_sections_created = FALSE;
692 ret->dynamic_sections_needed = FALSE;
693 ret->got_needed = FALSE;
252b5132
RH
694 ret->dynsymcount = 0;
695 ret->bucketcount = 0;
696 ret->needed = NULL;
697 ret->got_base = 0;
698
699 return &ret->root.root;
700}
701
702/* Look up an entry in an SunOS link hash table. */
703
704#define sunos_link_hash_lookup(table, string, create, copy, follow) \
705 ((struct sunos_link_hash_entry *) \
706 aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\
707 (follow)))
708
709/* Traverse a SunOS link hash table. */
710
711#define sunos_link_hash_traverse(table, func, info) \
712 (aout_link_hash_traverse \
713 (&(table)->root, \
116c20d2 714 (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \
252b5132
RH
715 (info)))
716
717/* Get the SunOS link hash table from the info structure. This is
718 just a cast. */
719
720#define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash))
721
252b5132
RH
722/* Create the dynamic sections needed if we are linking against a
723 dynamic object, or if we are linking PIC compiled code. ABFD is a
724 bfd we can attach the dynamic sections to. The linker script will
725 look for these special sections names and put them in the right
726 place in the output file. See include/aout/sun4.h for more details
727 of the dynamic linking information. */
728
b34976b6 729static bfd_boolean
116c20d2
NC
730sunos_create_dynamic_sections (bfd *abfd,
731 struct bfd_link_info *info,
732 bfd_boolean needed)
252b5132
RH
733{
734 asection *s;
735
736 if (! sunos_hash_table (info)->dynamic_sections_created)
737 {
738 flagword flags;
739
740 sunos_hash_table (info)->dynobj = abfd;
741
742 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
743 | SEC_LINKER_CREATED);
744
745 /* The .dynamic section holds the basic dynamic information: the
746 sun4_dynamic structure, the dynamic debugger information, and
747 the sun4_dynamic_link structure. */
117ed4f8 748 s = bfd_make_section_with_flags (abfd, ".dynamic", flags);
252b5132 749 if (s == NULL
252b5132 750 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 751 return FALSE;
252b5132
RH
752
753 /* The .got section holds the global offset table. The address
754 is put in the ld_got field. */
117ed4f8 755 s = bfd_make_section_with_flags (abfd, ".got", flags);
252b5132 756 if (s == NULL
252b5132 757 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 758 return FALSE;
252b5132
RH
759
760 /* The .plt section holds the procedure linkage table. The
761 address is put in the ld_plt field. */
117ed4f8 762 s = bfd_make_section_with_flags (abfd, ".plt", flags | SEC_CODE);
252b5132 763 if (s == NULL
252b5132 764 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 765 return FALSE;
252b5132
RH
766
767 /* The .dynrel section holds the dynamic relocs. The address is
768 put in the ld_rel field. */
117ed4f8 769 s = bfd_make_section_with_flags (abfd, ".dynrel", flags | SEC_READONLY);
252b5132 770 if (s == NULL
252b5132 771 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 772 return FALSE;
252b5132
RH
773
774 /* The .hash section holds the dynamic hash table. The address
775 is put in the ld_hash field. */
117ed4f8 776 s = bfd_make_section_with_flags (abfd, ".hash", flags | SEC_READONLY);
252b5132 777 if (s == NULL
252b5132 778 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 779 return FALSE;
252b5132
RH
780
781 /* The .dynsym section holds the dynamic symbols. The address
782 is put in the ld_stab field. */
117ed4f8 783 s = bfd_make_section_with_flags (abfd, ".dynsym", flags | SEC_READONLY);
252b5132 784 if (s == NULL
252b5132 785 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 786 return FALSE;
252b5132
RH
787
788 /* The .dynstr section holds the dynamic symbol string table.
789 The address is put in the ld_symbols field. */
117ed4f8 790 s = bfd_make_section_with_flags (abfd, ".dynstr", flags | SEC_READONLY);
252b5132 791 if (s == NULL
252b5132 792 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 793 return FALSE;
252b5132 794
b34976b6 795 sunos_hash_table (info)->dynamic_sections_created = TRUE;
252b5132
RH
796 }
797
798 if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed)
799 || info->shared)
800 {
801 bfd *dynobj;
802
803 dynobj = sunos_hash_table (info)->dynobj;
804
805 s = bfd_get_section_by_name (dynobj, ".got");
eea6121a
AM
806 if (s->size == 0)
807 s->size = BYTES_IN_WORD;
252b5132 808
b34976b6
AM
809 sunos_hash_table (info)->dynamic_sections_needed = TRUE;
810 sunos_hash_table (info)->got_needed = TRUE;
252b5132
RH
811 }
812
b34976b6 813 return TRUE;
252b5132
RH
814}
815
816/* Add dynamic symbols during a link. This is called by the a.out
817 backend linker for each object it encounters. */
818
b34976b6 819static bfd_boolean
116c20d2
NC
820sunos_add_dynamic_symbols (bfd *abfd,
821 struct bfd_link_info *info,
822 struct external_nlist **symsp,
823 bfd_size_type *sym_countp,
824 char **stringsp)
252b5132 825{
252b5132
RH
826 bfd *dynobj;
827 struct sunos_dynamic_info *dinfo;
828 unsigned long need;
829
830 /* Make sure we have all the required sections. */
831 if (info->hash->creator == abfd->xvec)
832 {
833 if (! sunos_create_dynamic_sections (abfd, info,
b34976b6 834 ((abfd->flags & DYNAMIC) != 0
1049f94e 835 && !info->relocatable)))
b34976b6 836 return FALSE;
252b5132
RH
837 }
838
839 /* There is nothing else to do for a normal object. */
840 if ((abfd->flags & DYNAMIC) == 0)
b34976b6 841 return TRUE;
252b5132
RH
842
843 dynobj = sunos_hash_table (info)->dynobj;
844
845 /* We do not want to include the sections in a dynamic object in the
846 output file. We hack by simply clobbering the list of sections
847 in the BFD. This could be handled more cleanly by, say, a new
848 section flag; the existing SEC_NEVER_LOAD flag is not the one we
849 want, because that one still implies that the section takes up
850 space in the output file. If this is the first object we have
851 seen, we must preserve the dynamic sections we just created. */
5daa8fe7
L
852 if (abfd != dynobj)
853 abfd->sections = NULL;
854 else
252b5132 855 {
04dd1667 856 asection *s;
5daa8fe7 857
04dd1667 858 for (s = abfd->sections; s != NULL; s = s->next)
5daa8fe7 859 {
5daa8fe7
L
860 if ((s->flags & SEC_LINKER_CREATED) == 0)
861 bfd_section_list_remove (abfd, s);
862 }
252b5132
RH
863 }
864
865 /* The native linker seems to just ignore dynamic objects when -r is
866 used. */
1049f94e 867 if (info->relocatable)
b34976b6 868 return TRUE;
252b5132
RH
869
870 /* There's no hope of using a dynamic object which does not exactly
871 match the format of the output file. */
872 if (info->hash->creator != abfd->xvec)
873 {
874 bfd_set_error (bfd_error_invalid_operation);
b34976b6 875 return FALSE;
252b5132
RH
876 }
877
878 /* Make sure we have a .need and a .rules sections. These are only
879 needed if there really is a dynamic object in the link, so they
880 are not added by sunos_create_dynamic_sections. */
881 if (bfd_get_section_by_name (dynobj, ".need") == NULL)
882 {
883 /* The .need section holds the list of names of shared objets
884 which must be included at runtime. The address of this
885 section is put in the ld_need field. */
117ed4f8
AM
886 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
887 | SEC_IN_MEMORY | SEC_READONLY);
888 asection *s = bfd_make_section_with_flags (dynobj, ".need", flags);
252b5132 889 if (s == NULL
252b5132 890 || ! bfd_set_section_alignment (dynobj, s, 2))
b34976b6 891 return FALSE;
252b5132
RH
892 }
893
894 if (bfd_get_section_by_name (dynobj, ".rules") == NULL)
895 {
896 /* The .rules section holds the path to search for shared
897 objects. The address of this section is put in the ld_rules
898 field. */
117ed4f8
AM
899 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
900 | SEC_IN_MEMORY | SEC_READONLY);
901 asection *s = bfd_make_section_with_flags (dynobj, ".rules", flags);
252b5132 902 if (s == NULL
252b5132 903 || ! bfd_set_section_alignment (dynobj, s, 2))
b34976b6 904 return FALSE;
252b5132
RH
905 }
906
907 /* Pick up the dynamic symbols and return them to the caller. */
908 if (! sunos_slurp_dynamic_symtab (abfd))
b34976b6 909 return FALSE;
252b5132
RH
910
911 dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
912 *symsp = dinfo->dynsym;
913 *sym_countp = dinfo->dynsym_count;
914 *stringsp = dinfo->dynstr;
915
916 /* Record information about any other objects needed by this one. */
917 need = dinfo->dyninfo.ld_need;
918 while (need != 0)
919 {
920 bfd_byte buf[16];
921 unsigned long name, flags;
922 unsigned short major_vno, minor_vno;
923 struct bfd_link_needed_list *needed, **pp;
924 char *namebuf, *p;
dc810e39 925 bfd_size_type alc;
252b5132
RH
926 bfd_byte b;
927 char *namecopy;
928
dc810e39
AM
929 if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0
930 || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16)
b34976b6 931 return FALSE;
252b5132
RH
932
933 /* For the format of an ld_need entry, see aout/sun4.h. We
b34976b6 934 should probably define structs for this manipulation. */
252b5132
RH
935 name = bfd_get_32 (abfd, buf);
936 flags = bfd_get_32 (abfd, buf + 4);
dc810e39
AM
937 major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8);
938 minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10);
252b5132
RH
939 need = bfd_get_32 (abfd, buf + 12);
940
dc810e39 941 alc = sizeof (struct bfd_link_needed_list);
116c20d2 942 needed = bfd_alloc (abfd, alc);
252b5132 943 if (needed == NULL)
b34976b6 944 return FALSE;
252b5132
RH
945 needed->by = abfd;
946
947 /* We return the name as [-l]name[.maj][.min]. */
948 alc = 30;
116c20d2 949 namebuf = bfd_malloc (alc + 1);
252b5132 950 if (namebuf == NULL)
b34976b6 951 return FALSE;
252b5132
RH
952 p = namebuf;
953
954 if ((flags & 0x80000000) != 0)
955 {
956 *p++ = '-';
957 *p++ = 'l';
958 }
dc810e39 959 if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0)
252b5132
RH
960 {
961 free (namebuf);
b34976b6 962 return FALSE;
252b5132
RH
963 }
964
965 do
966 {
dc810e39 967 if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1)
252b5132
RH
968 {
969 free (namebuf);
b34976b6 970 return FALSE;
252b5132
RH
971 }
972
dc810e39 973 if ((bfd_size_type) (p - namebuf) >= alc)
252b5132
RH
974 {
975 char *n;
976
977 alc *= 2;
116c20d2 978 n = bfd_realloc (namebuf, alc + 1);
252b5132
RH
979 if (n == NULL)
980 {
981 free (namebuf);
b34976b6 982 return FALSE;
252b5132
RH
983 }
984 p = n + (p - namebuf);
985 namebuf = n;
986 }
987
988 *p++ = b;
989 }
990 while (b != '\0');
991
992 if (major_vno == 0)
993 *p = '\0';
994 else
995 {
996 char majbuf[30];
997 char minbuf[30];
998
999 sprintf (majbuf, ".%d", major_vno);
1000 if (minor_vno == 0)
1001 minbuf[0] = '\0';
1002 else
1003 sprintf (minbuf, ".%d", minor_vno);
1004
1005 if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc)
1006 {
1007 char *n;
1008
1009 alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf);
116c20d2 1010 n = bfd_realloc (namebuf, alc + 1);
252b5132
RH
1011 if (n == NULL)
1012 {
1013 free (namebuf);
b34976b6 1014 return FALSE;
252b5132
RH
1015 }
1016 p = n + (p - namebuf);
1017 namebuf = n;
1018 }
1019
1020 strcpy (p, majbuf);
1021 strcat (p, minbuf);
1022 }
1023
dc810e39 1024 namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1);
252b5132
RH
1025 if (namecopy == NULL)
1026 {
1027 free (namebuf);
b34976b6 1028 return FALSE;
252b5132
RH
1029 }
1030 strcpy (namecopy, namebuf);
1031 free (namebuf);
1032 needed->name = namecopy;
1033
1034 needed->next = NULL;
1035
1036 for (pp = &sunos_hash_table (info)->needed;
1037 *pp != NULL;
1038 pp = &(*pp)->next)
1039 ;
1040 *pp = needed;
1041 }
1042
b34976b6 1043 return TRUE;
252b5132
RH
1044}
1045
1046/* Function to add a single symbol to the linker hash table. This is
1047 a wrapper around _bfd_generic_link_add_one_symbol which handles the
1048 tweaking needed for dynamic linking support. */
1049
b34976b6 1050static bfd_boolean
116c20d2
NC
1051sunos_add_one_symbol (struct bfd_link_info *info,
1052 bfd *abfd,
1053 const char *name,
1054 flagword flags,
1055 asection *section,
1056 bfd_vma value,
1057 const char *string,
1058 bfd_boolean copy,
1059 bfd_boolean collect,
1060 struct bfd_link_hash_entry **hashp)
252b5132
RH
1061{
1062 struct sunos_link_hash_entry *h;
1063 int new_flag;
1064
1065 if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0
1066 || ! bfd_is_und_section (section))
b34976b6
AM
1067 h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy,
1068 FALSE);
252b5132
RH
1069 else
1070 h = ((struct sunos_link_hash_entry *)
b34976b6 1071 bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE));
252b5132 1072 if (h == NULL)
b34976b6 1073 return FALSE;
252b5132
RH
1074
1075 if (hashp != NULL)
1076 *hashp = (struct bfd_link_hash_entry *) h;
1077
1078 /* Treat a common symbol in a dynamic object as defined in the .bss
1079 section of the dynamic object. We don't want to allocate space
1080 for it in our process image. */
1081 if ((abfd->flags & DYNAMIC) != 0
1082 && bfd_is_com_section (section))
1083 section = obj_bsssec (abfd);
1084
1085 if (! bfd_is_und_section (section)
1086 && h->root.root.type != bfd_link_hash_new
1087 && h->root.root.type != bfd_link_hash_undefined
1088 && h->root.root.type != bfd_link_hash_defweak)
1089 {
1090 /* We are defining the symbol, and it is already defined. This
1091 is a potential multiple definition error. */
1092 if ((abfd->flags & DYNAMIC) != 0)
1093 {
1094 /* The definition we are adding is from a dynamic object.
1095 We do not want this new definition to override the
1096 existing definition, so we pretend it is just a
1097 reference. */
1098 section = bfd_und_section_ptr;
1099 }
1100 else if (h->root.root.type == bfd_link_hash_defined
1101 && h->root.root.u.def.section->owner != NULL
1102 && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1103 {
1104 /* The existing definition is from a dynamic object. We
1105 want to override it with the definition we just found.
1106 Clobber the existing definition. */
1107 h->root.root.type = bfd_link_hash_undefined;
1108 h->root.root.u.undef.abfd = h->root.root.u.def.section->owner;
1109 }
1110 else if (h->root.root.type == bfd_link_hash_common
1111 && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0)
1112 {
1113 /* The existing definition is from a dynamic object. We
1114 want to override it with the definition we just found.
1115 Clobber the existing definition. We can't set it to new,
1116 because it is on the undefined list. */
1117 h->root.root.type = bfd_link_hash_undefined;
1118 h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner;
1119 }
1120 }
1121
1122 if ((abfd->flags & DYNAMIC) != 0
1123 && abfd->xvec == info->hash->creator
1124 && (h->flags & SUNOS_CONSTRUCTOR) != 0)
116c20d2
NC
1125 /* The existing symbol is a constructor symbol, and this symbol
1126 is from a dynamic object. A constructor symbol is actually a
1127 definition, although the type will be bfd_link_hash_undefined
1128 at this point. We want to ignore the definition from the
1129 dynamic object. */
1130 section = bfd_und_section_ptr;
252b5132
RH
1131 else if ((flags & BSF_CONSTRUCTOR) != 0
1132 && (abfd->flags & DYNAMIC) == 0
1133 && h->root.root.type == bfd_link_hash_defined
1134 && h->root.root.u.def.section->owner != NULL
1135 && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
116c20d2
NC
1136 /* The existing symbol is defined by a dynamic object, and this
1137 is a constructor symbol. As above, we want to force the use
1138 of the constructor symbol from the regular object. */
1139 h->root.root.type = bfd_link_hash_new;
252b5132
RH
1140
1141 /* Do the usual procedure for adding a symbol. */
1142 if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
1143 value, string, copy, collect,
1144 hashp))
b34976b6 1145 return FALSE;
252b5132
RH
1146
1147 if (abfd->xvec == info->hash->creator)
1148 {
1149 /* Set a flag in the hash table entry indicating the type of
1150 reference or definition we just found. Keep a count of the
1151 number of dynamic symbols we find. A dynamic symbol is one
1152 which is referenced or defined by both a regular object and a
1153 shared object. */
1154 if ((abfd->flags & DYNAMIC) == 0)
1155 {
1156 if (bfd_is_und_section (section))
1157 new_flag = SUNOS_REF_REGULAR;
1158 else
1159 new_flag = SUNOS_DEF_REGULAR;
1160 }
1161 else
1162 {
1163 if (bfd_is_und_section (section))
1164 new_flag = SUNOS_REF_DYNAMIC;
1165 else
1166 new_flag = SUNOS_DEF_DYNAMIC;
1167 }
1168 h->flags |= new_flag;
1169
1170 if (h->dynindx == -1
1171 && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1172 {
1173 ++sunos_hash_table (info)->dynsymcount;
1174 h->dynindx = -2;
1175 }
1176
1177 if ((flags & BSF_CONSTRUCTOR) != 0
1178 && (abfd->flags & DYNAMIC) == 0)
1179 h->flags |= SUNOS_CONSTRUCTOR;
1180 }
1181
b34976b6 1182 return TRUE;
252b5132
RH
1183}
1184
116c20d2
NC
1185extern const bfd_target MY (vec);
1186
252b5132
RH
1187/* Return the list of objects needed by BFD. */
1188
252b5132 1189struct bfd_link_needed_list *
116c20d2
NC
1190bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
1191 struct bfd_link_info *info)
252b5132 1192{
116c20d2 1193 if (info->hash->creator != &MY (vec))
252b5132
RH
1194 return NULL;
1195 return sunos_hash_table (info)->needed;
1196}
1197
1198/* Record an assignment made to a symbol by a linker script. We need
1199 this in case some dynamic object refers to this symbol. */
1200
b34976b6 1201bfd_boolean
116c20d2
NC
1202bfd_sunos_record_link_assignment (bfd *output_bfd,
1203 struct bfd_link_info *info,
1204 const char *name)
252b5132
RH
1205{
1206 struct sunos_link_hash_entry *h;
1207
1208 if (output_bfd->xvec != &MY(vec))
b34976b6 1209 return TRUE;
252b5132
RH
1210
1211 /* This is called after we have examined all the input objects. If
1212 the symbol does not exist, it merely means that no object refers
1213 to it, and we can just ignore it at this point. */
1214 h = sunos_link_hash_lookup (sunos_hash_table (info), name,
b34976b6 1215 FALSE, FALSE, FALSE);
252b5132 1216 if (h == NULL)
b34976b6 1217 return TRUE;
252b5132
RH
1218
1219 /* In a shared library, the __DYNAMIC symbol does not appear in the
1220 dynamic symbol table. */
1221 if (! info->shared || strcmp (name, "__DYNAMIC") != 0)
1222 {
1223 h->flags |= SUNOS_DEF_REGULAR;
1224
1225 if (h->dynindx == -1)
1226 {
1227 ++sunos_hash_table (info)->dynsymcount;
1228 h->dynindx = -2;
1229 }
1230 }
1231
b34976b6 1232 return TRUE;
252b5132
RH
1233}
1234
116c20d2
NC
1235/* Scan the relocs for an input section using standard relocs. We
1236 need to figure out what to do for each reloc against a dynamic
1237 symbol. If the symbol is in the .text section, an entry is made in
1238 the procedure linkage table. Note that this will do the wrong
1239 thing if the symbol is actually data; I don't think the Sun 3
1240 native linker handles this case correctly either. If the symbol is
1241 not in the .text section, we must preserve the reloc as a dynamic
1242 reloc. FIXME: We should also handle the PIC relocs here by
1243 building global offset table entries. */
252b5132 1244
116c20d2
NC
1245static bfd_boolean
1246sunos_scan_std_relocs (struct bfd_link_info *info,
1247 bfd *abfd,
1248 asection *sec ATTRIBUTE_UNUSED,
1249 const struct reloc_std_external *relocs,
1250 bfd_size_type rel_size)
252b5132
RH
1251{
1252 bfd *dynobj;
116c20d2
NC
1253 asection *splt = NULL;
1254 asection *srel = NULL;
1255 struct sunos_link_hash_entry **sym_hashes;
1256 const struct reloc_std_external *rel, *relend;
252b5132 1257
116c20d2
NC
1258 /* We only know how to handle m68k plt entries. */
1259 if (bfd_get_arch (abfd) != bfd_arch_m68k)
252b5132 1260 {
116c20d2
NC
1261 bfd_set_error (bfd_error_invalid_target);
1262 return FALSE;
252b5132
RH
1263 }
1264
116c20d2 1265 dynobj = NULL;
252b5132 1266
116c20d2 1267 sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
252b5132 1268
116c20d2
NC
1269 relend = relocs + rel_size / RELOC_STD_SIZE;
1270 for (rel = relocs; rel < relend; rel++)
252b5132 1271 {
116c20d2
NC
1272 int r_index;
1273 struct sunos_link_hash_entry *h;
1274
1275 /* We only want relocs against external symbols. */
1276 if (bfd_header_big_endian (abfd))
252b5132 1277 {
116c20d2
NC
1278 if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0)
1279 continue;
252b5132 1280 }
252b5132 1281 else
116c20d2
NC
1282 {
1283 if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0)
1284 continue;
1285 }
7b82c249 1286
116c20d2
NC
1287 /* Get the symbol index. */
1288 if (bfd_header_big_endian (abfd))
1289 r_index = ((rel->r_index[0] << 16)
1290 | (rel->r_index[1] << 8)
1291 | rel->r_index[2]);
252b5132 1292 else
116c20d2
NC
1293 r_index = ((rel->r_index[2] << 16)
1294 | (rel->r_index[1] << 8)
1295 | rel->r_index[0]);
252b5132 1296
116c20d2
NC
1297 /* Get the hash table entry. */
1298 h = sym_hashes[r_index];
1299 if (h == NULL)
1300 /* This should not normally happen, but it will in any case
1301 be caught in the relocation phase. */
1302 continue;
252b5132 1303
116c20d2
NC
1304 /* At this point common symbols have already been allocated, so
1305 we don't have to worry about them. We need to consider that
1306 we may have already seen this symbol and marked it undefined;
1307 if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1308 will be zero. */
1309 if (h->root.root.type != bfd_link_hash_defined
1310 && h->root.root.type != bfd_link_hash_defweak
1311 && h->root.root.type != bfd_link_hash_undefined)
1312 continue;
252b5132 1313
116c20d2
NC
1314 if ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1315 || (h->flags & SUNOS_DEF_REGULAR) != 0)
1316 continue;
1317
1318 if (dynobj == NULL)
252b5132 1319 {
116c20d2 1320 asection *sgot;
252b5132 1321
116c20d2 1322 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
b34976b6 1323 return FALSE;
116c20d2
NC
1324 dynobj = sunos_hash_table (info)->dynobj;
1325 splt = bfd_get_section_by_name (dynobj, ".plt");
1326 srel = bfd_get_section_by_name (dynobj, ".dynrel");
1327 BFD_ASSERT (splt != NULL && srel != NULL);
1328
1329 sgot = bfd_get_section_by_name (dynobj, ".got");
1330 BFD_ASSERT (sgot != NULL);
1331 if (sgot->size == 0)
1332 sgot->size = BYTES_IN_WORD;
1333 sunos_hash_table (info)->got_needed = TRUE;
252b5132 1334 }
252b5132 1335
116c20d2
NC
1336 BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0);
1337 BFD_ASSERT (h->plt_offset != 0
1338 || ((h->root.root.type == bfd_link_hash_defined
1339 || h->root.root.type == bfd_link_hash_defweak)
1340 ? (h->root.root.u.def.section->owner->flags
1341 & DYNAMIC) != 0
1342 : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
252b5132 1343
116c20d2
NC
1344 /* This reloc is against a symbol defined only by a dynamic
1345 object. */
1346 if (h->root.root.type == bfd_link_hash_undefined)
1347 /* Presumably this symbol was marked as being undefined by
1348 an earlier reloc. */
1349 srel->size += RELOC_STD_SIZE;
1350 else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0)
252b5132 1351 {
116c20d2 1352 bfd *sub;
252b5132
RH
1353
1354 /* This reloc is not in the .text section. It must be
1355 copied into the dynamic relocs. We mark the symbol as
1356 being undefined. */
eea6121a 1357 srel->size += RELOC_STD_SIZE;
252b5132
RH
1358 sub = h->root.root.u.def.section->owner;
1359 h->root.root.type = bfd_link_hash_undefined;
1360 h->root.root.u.undef.abfd = sub;
1361 }
1362 else
1363 {
1364 /* This symbol is in the .text section. We must give it an
1365 entry in the procedure linkage table, if we have not
1366 already done so. We change the definition of the symbol
1367 to the .plt section; this will cause relocs against it to
1368 be handled correctly. */
1369 if (h->plt_offset == 0)
1370 {
eea6121a
AM
1371 if (splt->size == 0)
1372 splt->size = M68K_PLT_ENTRY_SIZE;
1373 h->plt_offset = splt->size;
252b5132
RH
1374
1375 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1376 {
1377 h->root.root.u.def.section = splt;
eea6121a 1378 h->root.root.u.def.value = splt->size;
252b5132
RH
1379 }
1380
eea6121a 1381 splt->size += M68K_PLT_ENTRY_SIZE;
252b5132
RH
1382
1383 /* We may also need a dynamic reloc entry. */
1384 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
eea6121a 1385 srel->size += RELOC_STD_SIZE;
252b5132
RH
1386 }
1387 }
1388 }
1389
b34976b6 1390 return TRUE;
252b5132
RH
1391}
1392
1393/* Scan the relocs for an input section using extended relocs. We
1394 need to figure out what to do for each reloc against a dynamic
1395 symbol. If the reloc is a WDISP30, and the symbol is in the .text
1396 section, an entry is made in the procedure linkage table.
1397 Otherwise, we must preserve the reloc as a dynamic reloc. */
1398
b34976b6 1399static bfd_boolean
116c20d2
NC
1400sunos_scan_ext_relocs (struct bfd_link_info *info,
1401 bfd *abfd,
1402 asection *sec ATTRIBUTE_UNUSED,
1403 const struct reloc_ext_external *relocs,
1404 bfd_size_type rel_size)
252b5132
RH
1405{
1406 bfd *dynobj;
1407 struct sunos_link_hash_entry **sym_hashes;
1408 const struct reloc_ext_external *rel, *relend;
1409 asection *splt = NULL;
1410 asection *sgot = NULL;
1411 asection *srel = NULL;
dc810e39 1412 bfd_size_type amt;
252b5132
RH
1413
1414 /* We only know how to handle SPARC plt entries. */
1415 if (bfd_get_arch (abfd) != bfd_arch_sparc)
1416 {
1417 bfd_set_error (bfd_error_invalid_target);
b34976b6 1418 return FALSE;
252b5132
RH
1419 }
1420
1421 dynobj = NULL;
1422
1423 sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
1424
1425 relend = relocs + rel_size / RELOC_EXT_SIZE;
1426 for (rel = relocs; rel < relend; rel++)
1427 {
1428 unsigned int r_index;
1429 int r_extern;
1430 int r_type;
1431 struct sunos_link_hash_entry *h = NULL;
1432
1433 /* Swap in the reloc information. */
1434 if (bfd_header_big_endian (abfd))
1435 {
1436 r_index = ((rel->r_index[0] << 16)
1437 | (rel->r_index[1] << 8)
1438 | rel->r_index[2]);
1439 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
1440 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
1441 >> RELOC_EXT_BITS_TYPE_SH_BIG);
1442 }
1443 else
1444 {
1445 r_index = ((rel->r_index[2] << 16)
1446 | (rel->r_index[1] << 8)
1447 | rel->r_index[0]);
1448 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
1449 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
1450 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
1451 }
1452
1453 if (r_extern)
1454 {
1455 h = sym_hashes[r_index];
1456 if (h == NULL)
1457 {
1458 /* This should not normally happen, but it will in any
1459 case be caught in the relocation phase. */
1460 continue;
1461 }
1462 }
1463
1464 /* If this is a base relative reloc, we need to make an entry in
b34976b6 1465 the .got section. */
252b5132
RH
1466 if (r_type == RELOC_BASE10
1467 || r_type == RELOC_BASE13
1468 || r_type == RELOC_BASE22)
1469 {
1470 if (dynobj == NULL)
1471 {
b34976b6
AM
1472 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1473 return FALSE;
252b5132
RH
1474 dynobj = sunos_hash_table (info)->dynobj;
1475 splt = bfd_get_section_by_name (dynobj, ".plt");
1476 sgot = bfd_get_section_by_name (dynobj, ".got");
1477 srel = bfd_get_section_by_name (dynobj, ".dynrel");
1478 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1479
1480 /* Make sure we have an initial entry in the .got table. */
eea6121a
AM
1481 if (sgot->size == 0)
1482 sgot->size = BYTES_IN_WORD;
b34976b6 1483 sunos_hash_table (info)->got_needed = TRUE;
252b5132
RH
1484 }
1485
1486 if (r_extern)
1487 {
1488 if (h->got_offset != 0)
1489 continue;
1490
eea6121a 1491 h->got_offset = sgot->size;
252b5132
RH
1492 }
1493 else
1494 {
1495 if (r_index >= bfd_get_symcount (abfd))
116c20d2
NC
1496 /* This is abnormal, but should be caught in the
1497 relocation phase. */
1498 continue;
252b5132
RH
1499
1500 if (adata (abfd).local_got_offsets == NULL)
1501 {
dc810e39
AM
1502 amt = bfd_get_symcount (abfd);
1503 amt *= sizeof (bfd_vma);
116c20d2 1504 adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt);
252b5132 1505 if (adata (abfd).local_got_offsets == NULL)
b34976b6 1506 return FALSE;
252b5132
RH
1507 }
1508
1509 if (adata (abfd).local_got_offsets[r_index] != 0)
1510 continue;
1511
eea6121a 1512 adata (abfd).local_got_offsets[r_index] = sgot->size;
252b5132
RH
1513 }
1514
eea6121a 1515 sgot->size += BYTES_IN_WORD;
252b5132
RH
1516
1517 /* If we are making a shared library, or if the symbol is
1518 defined by a dynamic object, we will need a dynamic reloc
1519 entry. */
1520 if (info->shared
1521 || (h != NULL
1522 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1523 && (h->flags & SUNOS_DEF_REGULAR) == 0))
eea6121a 1524 srel->size += RELOC_EXT_SIZE;
252b5132
RH
1525
1526 continue;
1527 }
1528
1529 /* Otherwise, we are only interested in relocs against symbols
b34976b6
AM
1530 defined in dynamic objects but not in regular objects. We
1531 only need to consider relocs against external symbols. */
252b5132
RH
1532 if (! r_extern)
1533 {
1534 /* But, if we are creating a shared library, we need to
b34976b6 1535 generate an absolute reloc. */
252b5132
RH
1536 if (info->shared)
1537 {
1538 if (dynobj == NULL)
1539 {
b34976b6
AM
1540 if (! sunos_create_dynamic_sections (abfd, info, TRUE))
1541 return FALSE;
252b5132
RH
1542 dynobj = sunos_hash_table (info)->dynobj;
1543 splt = bfd_get_section_by_name (dynobj, ".plt");
1544 sgot = bfd_get_section_by_name (dynobj, ".got");
1545 srel = bfd_get_section_by_name (dynobj, ".dynrel");
1546 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1547 }
1548
eea6121a 1549 srel->size += RELOC_EXT_SIZE;
252b5132
RH
1550 }
1551
1552 continue;
1553 }
1554
1555 /* At this point common symbols have already been allocated, so
1556 we don't have to worry about them. We need to consider that
1557 we may have already seen this symbol and marked it undefined;
1558 if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1559 will be zero. */
1560 if (h->root.root.type != bfd_link_hash_defined
1561 && h->root.root.type != bfd_link_hash_defweak
1562 && h->root.root.type != bfd_link_hash_undefined)
1563 continue;
1564
1565 if (r_type != RELOC_JMP_TBL
1566 && ! info->shared
1567 && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1568 || (h->flags & SUNOS_DEF_REGULAR) != 0))
1569 continue;
1570
1571 if (r_type == RELOC_JMP_TBL
1572 && ! info->shared
1573 && (h->flags & SUNOS_DEF_DYNAMIC) == 0
1574 && (h->flags & SUNOS_DEF_REGULAR) == 0)
1575 {
1576 /* This symbol is apparently undefined. Don't do anything
b34976b6
AM
1577 here; just let the relocation routine report an undefined
1578 symbol. */
252b5132
RH
1579 continue;
1580 }
1581
1582 if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1583 continue;
1584
1585 if (dynobj == NULL)
1586 {
b34976b6
AM
1587 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1588 return FALSE;
252b5132
RH
1589 dynobj = sunos_hash_table (info)->dynobj;
1590 splt = bfd_get_section_by_name (dynobj, ".plt");
1591 sgot = bfd_get_section_by_name (dynobj, ".got");
1592 srel = bfd_get_section_by_name (dynobj, ".dynrel");
1593 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1594
1595 /* Make sure we have an initial entry in the .got table. */
eea6121a
AM
1596 if (sgot->size == 0)
1597 sgot->size = BYTES_IN_WORD;
b34976b6 1598 sunos_hash_table (info)->got_needed = TRUE;
252b5132
RH
1599 }
1600
1601 BFD_ASSERT (r_type == RELOC_JMP_TBL
1602 || info->shared
1603 || (h->flags & SUNOS_REF_REGULAR) != 0);
1604 BFD_ASSERT (r_type == RELOC_JMP_TBL
1605 || info->shared
1606 || h->plt_offset != 0
1607 || ((h->root.root.type == bfd_link_hash_defined
1608 || h->root.root.type == bfd_link_hash_defweak)
1609 ? (h->root.root.u.def.section->owner->flags
1610 & DYNAMIC) != 0
1611 : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
1612
1613 /* This reloc is against a symbol defined only by a dynamic
1614 object, or it is a jump table reloc from PIC compiled code. */
1615
1616 if (r_type != RELOC_JMP_TBL
1617 && h->root.root.type == bfd_link_hash_undefined)
116c20d2
NC
1618 /* Presumably this symbol was marked as being undefined by
1619 an earlier reloc. */
1620 srel->size += RELOC_EXT_SIZE;
1621
252b5132
RH
1622 else if (r_type != RELOC_JMP_TBL
1623 && (h->root.root.u.def.section->flags & SEC_CODE) == 0)
1624 {
1625 bfd *sub;
1626
1627 /* This reloc is not in the .text section. It must be
1628 copied into the dynamic relocs. We mark the symbol as
1629 being undefined. */
eea6121a 1630 srel->size += RELOC_EXT_SIZE;
252b5132
RH
1631 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1632 {
1633 sub = h->root.root.u.def.section->owner;
1634 h->root.root.type = bfd_link_hash_undefined;
1635 h->root.root.u.undef.abfd = sub;
1636 }
1637 }
1638 else
1639 {
1640 /* This symbol is in the .text section. We must give it an
1641 entry in the procedure linkage table, if we have not
1642 already done so. We change the definition of the symbol
1643 to the .plt section; this will cause relocs against it to
1644 be handled correctly. */
1645 if (h->plt_offset == 0)
1646 {
eea6121a
AM
1647 if (splt->size == 0)
1648 splt->size = SPARC_PLT_ENTRY_SIZE;
1649 h->plt_offset = splt->size;
252b5132
RH
1650
1651 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1652 {
1653 if (h->root.root.type == bfd_link_hash_undefined)
1654 h->root.root.type = bfd_link_hash_defined;
1655 h->root.root.u.def.section = splt;
eea6121a 1656 h->root.root.u.def.value = splt->size;
252b5132
RH
1657 }
1658
eea6121a 1659 splt->size += SPARC_PLT_ENTRY_SIZE;
252b5132
RH
1660
1661 /* We will also need a dynamic reloc entry, unless this
b34976b6
AM
1662 is a JMP_TBL reloc produced by linking PIC compiled
1663 code, and we are not making a shared library. */
252b5132 1664 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
eea6121a 1665 srel->size += RELOC_EXT_SIZE;
252b5132
RH
1666 }
1667
1668 /* If we are creating a shared library, we need to copy over
b34976b6 1669 any reloc other than a jump table reloc. */
252b5132 1670 if (info->shared && r_type != RELOC_JMP_TBL)
eea6121a 1671 srel->size += RELOC_EXT_SIZE;
252b5132
RH
1672 }
1673 }
1674
b34976b6 1675 return TRUE;
252b5132
RH
1676}
1677
116c20d2
NC
1678/* Scan the relocs for an input section. */
1679
1680static bfd_boolean
1681sunos_scan_relocs (struct bfd_link_info *info,
1682 bfd *abfd,
1683 asection *sec,
1684 bfd_size_type rel_size)
1685{
1686 void * relocs;
1687 void * free_relocs = NULL;
1688
1689 if (rel_size == 0)
1690 return TRUE;
1691
1692 if (! info->keep_memory)
1693 relocs = free_relocs = bfd_malloc (rel_size);
1694 else
1695 {
1696 struct aout_section_data_struct *n;
1697 bfd_size_type amt = sizeof (struct aout_section_data_struct);
1698
1699 n = bfd_alloc (abfd, amt);
1700 if (n == NULL)
1701 relocs = NULL;
1702 else
1703 {
1704 set_aout_section_data (sec, n);
1705 relocs = bfd_malloc (rel_size);
1706 aout_section_data (sec)->relocs = relocs;
1707 }
1708 }
1709 if (relocs == NULL)
1710 return FALSE;
1711
1712 if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
1713 || bfd_bread (relocs, rel_size, abfd) != rel_size)
1714 goto error_return;
1715
1716 if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE)
1717 {
1718 if (! sunos_scan_std_relocs (info, abfd, sec,
1719 (struct reloc_std_external *) relocs,
1720 rel_size))
1721 goto error_return;
1722 }
1723 else
1724 {
1725 if (! sunos_scan_ext_relocs (info, abfd, sec,
1726 (struct reloc_ext_external *) relocs,
1727 rel_size))
1728 goto error_return;
1729 }
1730
1731 if (free_relocs != NULL)
1732 free (free_relocs);
1733
1734 return TRUE;
1735
1736 error_return:
1737 if (free_relocs != NULL)
1738 free (free_relocs);
1739 return FALSE;
1740}
1741
252b5132
RH
1742/* Build the hash table of dynamic symbols, and to mark as written all
1743 symbols from dynamic objects which we do not plan to write out. */
1744
b34976b6 1745static bfd_boolean
116c20d2 1746sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data)
252b5132
RH
1747{
1748 struct bfd_link_info *info = (struct bfd_link_info *) data;
1749
e92d460e
AM
1750 if (h->root.root.type == bfd_link_hash_warning)
1751 h = (struct sunos_link_hash_entry *) h->root.root.u.i.link;
1752
252b5132
RH
1753 /* Set the written flag for symbols we do not want to write out as
1754 part of the regular symbol table. This is all symbols which are
1755 not defined in a regular object file. For some reason symbols
1756 which are referenced by a regular object and defined by a dynamic
1757 object do not seem to show up in the regular symbol table. It is
1758 possible for a symbol to have only SUNOS_REF_REGULAR set here, it
1759 is an undefined symbol which was turned into a common symbol
1760 because it was found in an archive object which was not included
1761 in the link. */
1762 if ((h->flags & SUNOS_DEF_REGULAR) == 0
1763 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1764 && strcmp (h->root.root.root.string, "__DYNAMIC") != 0)
b34976b6 1765 h->root.written = TRUE;
252b5132
RH
1766
1767 /* If this symbol is defined by a dynamic object and referenced by a
1768 regular object, see whether we gave it a reasonable value while
1769 scanning the relocs. */
252b5132
RH
1770 if ((h->flags & SUNOS_DEF_REGULAR) == 0
1771 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1772 && (h->flags & SUNOS_REF_REGULAR) != 0)
1773 {
1774 if ((h->root.root.type == bfd_link_hash_defined
1775 || h->root.root.type == bfd_link_hash_defweak)
1776 && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1777 && h->root.root.u.def.section->output_section == NULL)
1778 {
1779 bfd *sub;
1780
1781 /* This symbol is currently defined in a dynamic section
1782 which is not being put into the output file. This
1783 implies that there is no reloc against the symbol. I'm
1784 not sure why this case would ever occur. In any case, we
1785 change the symbol to be undefined. */
1786 sub = h->root.root.u.def.section->owner;
1787 h->root.root.type = bfd_link_hash_undefined;
1788 h->root.root.u.undef.abfd = sub;
1789 }
1790 }
1791
1792 /* If this symbol is defined or referenced by a regular file, add it
1793 to the dynamic symbols. */
1794 if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1795 {
1796 asection *s;
1797 size_t len;
1798 bfd_byte *contents;
1799 unsigned char *name;
1800 unsigned long hash;
1801 bfd *dynobj;
1802
1803 BFD_ASSERT (h->dynindx == -2);
1804
1805 dynobj = sunos_hash_table (info)->dynobj;
1806
1807 h->dynindx = sunos_hash_table (info)->dynsymcount;
1808 ++sunos_hash_table (info)->dynsymcount;
1809
1810 len = strlen (h->root.root.root.string);
1811
1812 /* We don't bother to construct a BFD hash table for the strings
1813 which are the names of the dynamic symbols. Using a hash
1814 table for the regular symbols is beneficial, because the
1815 regular symbols includes the debugging symbols, which have
1816 long names and are often duplicated in several object files.
1817 There are no debugging symbols in the dynamic symbols. */
1818 s = bfd_get_section_by_name (dynobj, ".dynstr");
1819 BFD_ASSERT (s != NULL);
116c20d2 1820 contents = bfd_realloc (s->contents, s->size + len + 1);
252b5132 1821 if (contents == NULL)
b34976b6 1822 return FALSE;
252b5132
RH
1823 s->contents = contents;
1824
eea6121a
AM
1825 h->dynstr_index = s->size;
1826 strcpy ((char *) contents + s->size, h->root.root.root.string);
1827 s->size += len + 1;
252b5132
RH
1828
1829 /* Add it to the dynamic hash table. */
1830 name = (unsigned char *) h->root.root.root.string;
1831 hash = 0;
1832 while (*name != '\0')
1833 hash = (hash << 1) + *name++;
1834 hash &= 0x7fffffff;
1835 hash %= sunos_hash_table (info)->bucketcount;
1836
1837 s = bfd_get_section_by_name (dynobj, ".hash");
1838 BFD_ASSERT (s != NULL);
1839
1840 if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1)
1841 PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE);
1842 else
1843 {
1844 bfd_vma next;
1845
1846 next = GET_WORD (dynobj,
1847 (s->contents
1848 + hash * HASH_ENTRY_SIZE
1849 + BYTES_IN_WORD));
eea6121a 1850 PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE,
252b5132 1851 s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
eea6121a
AM
1852 PUT_WORD (dynobj, h->dynindx, s->contents + s->size);
1853 PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD);
1854 s->size += HASH_ENTRY_SIZE;
252b5132
RH
1855 }
1856 }
1857
b34976b6 1858 return TRUE;
252b5132
RH
1859}
1860
116c20d2
NC
1861/* Set up the sizes and contents of the dynamic sections created in
1862 sunos_add_dynamic_symbols. This is called by the SunOS linker
1863 emulation before_allocation routine. We must set the sizes of the
1864 sections before the linker sets the addresses of the various
1865 sections. This unfortunately requires reading all the relocs so
1866 that we can work out which ones need to become dynamic relocs. If
1867 info->keep_memory is TRUE, we keep the relocs in memory; otherwise,
1868 we discard them, and will read them again later. */
1869
1870bfd_boolean
1871bfd_sunos_size_dynamic_sections (bfd *output_bfd,
1872 struct bfd_link_info *info,
1873 asection **sdynptr,
1874 asection **sneedptr,
1875 asection **srulesptr)
1876{
1877 bfd *dynobj;
1878 bfd_size_type dynsymcount;
1879 struct sunos_link_hash_entry *h;
1880 asection *s;
1881 size_t bucketcount;
1882 bfd_size_type hashalloc;
1883 size_t i;
1884 bfd *sub;
1885
1886 *sdynptr = NULL;
1887 *sneedptr = NULL;
1888 *srulesptr = NULL;
1889
1890 if (info->relocatable)
1891 return TRUE;
1892
1893 if (output_bfd->xvec != &MY(vec))
1894 return TRUE;
1895
1896 /* Look through all the input BFD's and read their relocs. It would
1897 be better if we didn't have to do this, but there is no other way
1898 to determine the number of dynamic relocs we need, and, more
1899 importantly, there is no other way to know which symbols should
1900 get an entry in the procedure linkage table. */
1901 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
1902 {
1903 if ((sub->flags & DYNAMIC) == 0
1904 && sub->xvec == output_bfd->xvec)
1905 {
1906 if (! sunos_scan_relocs (info, sub, obj_textsec (sub),
1907 exec_hdr (sub)->a_trsize)
1908 || ! sunos_scan_relocs (info, sub, obj_datasec (sub),
1909 exec_hdr (sub)->a_drsize))
1910 return FALSE;
1911 }
1912 }
1913
1914 dynobj = sunos_hash_table (info)->dynobj;
1915 dynsymcount = sunos_hash_table (info)->dynsymcount;
1916
1917 /* If there were no dynamic objects in the link, and we don't need
1918 to build a global offset table, there is nothing to do here. */
1919 if (! sunos_hash_table (info)->dynamic_sections_needed
1920 && ! sunos_hash_table (info)->got_needed)
1921 return TRUE;
1922
1923 /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */
1924 h = sunos_link_hash_lookup (sunos_hash_table (info),
1925 "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE);
1926 if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0)
1927 {
1928 h->flags |= SUNOS_DEF_REGULAR;
1929 if (h->dynindx == -1)
1930 {
1931 ++sunos_hash_table (info)->dynsymcount;
1932 h->dynindx = -2;
1933 }
1934 h->root.root.type = bfd_link_hash_defined;
1935 h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got");
1936
1937 /* If the .got section is more than 0x1000 bytes, we set
1938 __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section,
1939 so that 13 bit relocations have a greater chance of working. */
1940 s = bfd_get_section_by_name (dynobj, ".got");
1941 BFD_ASSERT (s != NULL);
1942 if (s->size >= 0x1000)
1943 h->root.root.u.def.value = 0x1000;
1944 else
1945 h->root.root.u.def.value = 0;
1946
1947 sunos_hash_table (info)->got_base = h->root.root.u.def.value;
1948 }
1949
1950 /* If there are any shared objects in the link, then we need to set
1951 up the dynamic linking information. */
1952 if (sunos_hash_table (info)->dynamic_sections_needed)
1953 {
1954 *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic");
1955
1956 /* The .dynamic section is always the same size. */
1957 s = *sdynptr;
1958 BFD_ASSERT (s != NULL);
1959 s->size = (sizeof (struct external_sun4_dynamic)
1960 + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE
1961 + sizeof (struct external_sun4_dynamic_link));
1962
1963 /* Set the size of the .dynsym and .hash sections. We counted
1964 the number of dynamic symbols as we read the input files. We
1965 will build the dynamic symbol table (.dynsym) and the hash
1966 table (.hash) when we build the final symbol table, because
1967 until then we do not know the correct value to give the
1968 symbols. We build the dynamic symbol string table (.dynstr)
1969 in a traversal of the symbol table using
1970 sunos_scan_dynamic_symbol. */
1971 s = bfd_get_section_by_name (dynobj, ".dynsym");
1972 BFD_ASSERT (s != NULL);
1973 s->size = dynsymcount * sizeof (struct external_nlist);
1974 s->contents = bfd_alloc (output_bfd, s->size);
1975 if (s->contents == NULL && s->size != 0)
1976 return FALSE;
1977
1978 /* The number of buckets is just the number of symbols divided
1979 by four. To compute the final size of the hash table, we
1980 must actually compute the hash table. Normally we need
1981 exactly as many entries in the hash table as there are
1982 dynamic symbols, but if some of the buckets are not used we
1983 will need additional entries. In the worst case, every
1984 symbol will hash to the same bucket, and we will need
1985 BUCKETCOUNT - 1 extra entries. */
1986 if (dynsymcount >= 4)
1987 bucketcount = dynsymcount / 4;
1988 else if (dynsymcount > 0)
1989 bucketcount = dynsymcount;
1990 else
1991 bucketcount = 1;
1992 s = bfd_get_section_by_name (dynobj, ".hash");
1993 BFD_ASSERT (s != NULL);
1994 hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE;
1995 s->contents = bfd_zalloc (dynobj, hashalloc);
1996 if (s->contents == NULL && dynsymcount > 0)
1997 return FALSE;
1998 for (i = 0; i < bucketcount; i++)
1999 PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE);
2000 s->size = bucketcount * HASH_ENTRY_SIZE;
2001
2002 sunos_hash_table (info)->bucketcount = bucketcount;
2003
2004 /* Scan all the symbols, place them in the dynamic symbol table,
2005 and build the dynamic hash table. We reuse dynsymcount as a
2006 counter for the number of symbols we have added so far. */
2007 sunos_hash_table (info)->dynsymcount = 0;
2008 sunos_link_hash_traverse (sunos_hash_table (info),
2009 sunos_scan_dynamic_symbol,
2010 (void *) info);
2011 BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount);
2012
2013 /* The SunOS native linker seems to align the total size of the
2014 symbol strings to a multiple of 8. I don't know if this is
2015 important, but it can't hurt much. */
2016 s = bfd_get_section_by_name (dynobj, ".dynstr");
2017 BFD_ASSERT (s != NULL);
2018 if ((s->size & 7) != 0)
2019 {
2020 bfd_size_type add;
2021 bfd_byte *contents;
2022
2023 add = 8 - (s->size & 7);
2024 contents = bfd_realloc (s->contents, s->size + add);
2025 if (contents == NULL)
2026 return FALSE;
2027 memset (contents + s->size, 0, (size_t) add);
2028 s->contents = contents;
2029 s->size += add;
2030 }
2031 }
2032
2033 /* Now that we have worked out the sizes of the procedure linkage
2034 table and the dynamic relocs, allocate storage for them. */
2035 s = bfd_get_section_by_name (dynobj, ".plt");
2036 BFD_ASSERT (s != NULL);
2037 if (s->size != 0)
2038 {
2039 s->contents = bfd_alloc (dynobj, s->size);
2040 if (s->contents == NULL)
2041 return FALSE;
2042
2043 /* Fill in the first entry in the table. */
2044 switch (bfd_get_arch (dynobj))
2045 {
2046 case bfd_arch_sparc:
2047 memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE);
2048 break;
2049
2050 case bfd_arch_m68k:
2051 memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE);
2052 break;
2053
2054 default:
2055 abort ();
2056 }
2057 }
2058
2059 s = bfd_get_section_by_name (dynobj, ".dynrel");
2060 if (s->size != 0)
2061 {
2062 s->contents = bfd_alloc (dynobj, s->size);
2063 if (s->contents == NULL)
2064 return FALSE;
2065 }
2066 /* We use the reloc_count field to keep track of how many of the
2067 relocs we have output so far. */
2068 s->reloc_count = 0;
2069
2070 /* Make space for the global offset table. */
2071 s = bfd_get_section_by_name (dynobj, ".got");
2072 s->contents = bfd_alloc (dynobj, s->size);
2073 if (s->contents == NULL)
2074 return FALSE;
2075
2076 *sneedptr = bfd_get_section_by_name (dynobj, ".need");
2077 *srulesptr = bfd_get_section_by_name (dynobj, ".rules");
2078
2079 return TRUE;
2080}
2081
252b5132
RH
2082/* Link a dynamic object. We actually don't have anything to do at
2083 this point. This entry point exists to prevent the regular linker
2084 code from doing anything with the object. */
2085
b34976b6 2086static bfd_boolean
116c20d2
NC
2087sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2088 bfd *abfd ATTRIBUTE_UNUSED)
252b5132 2089{
b34976b6 2090 return TRUE;
252b5132
RH
2091}
2092
2093/* Write out a dynamic symbol. This is called by the final traversal
2094 over the symbol table. */
2095
b34976b6 2096static bfd_boolean
116c20d2
NC
2097sunos_write_dynamic_symbol (bfd *output_bfd,
2098 struct bfd_link_info *info,
2099 struct aout_link_hash_entry *harg)
252b5132
RH
2100{
2101 struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2102 int type;
2103 bfd_vma val;
2104 asection *s;
2105 struct external_nlist *outsym;
2106
2107 /* If this symbol is in the procedure linkage table, fill in the
2108 table entry. */
2109 if (h->plt_offset != 0)
2110 {
2111 bfd *dynobj;
2112 asection *splt;
2113 bfd_byte *p;
252b5132
RH
2114 bfd_vma r_address;
2115
2116 dynobj = sunos_hash_table (info)->dynobj;
2117 splt = bfd_get_section_by_name (dynobj, ".plt");
2118 p = splt->contents + h->plt_offset;
2119
2120 s = bfd_get_section_by_name (dynobj, ".dynrel");
2121
2122 r_address = (splt->output_section->vma
2123 + splt->output_offset
2124 + h->plt_offset);
2125
2126 switch (bfd_get_arch (output_bfd))
2127 {
2128 case bfd_arch_sparc:
2129 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2130 {
2131 bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p);
2132 bfd_put_32 (output_bfd,
2133 (SPARC_PLT_ENTRY_WORD1
2134 + (((- (h->plt_offset + 4) >> 2)
2135 & 0x3fffffff))),
2136 p + 4);
2137 bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count,
2138 p + 8);
2139 }
2140 else
2141 {
252b5132
RH
2142 val = (h->root.root.u.def.section->output_section->vma
2143 + h->root.root.u.def.section->output_offset
2144 + h->root.root.u.def.value);
2145 bfd_put_32 (output_bfd,
2146 SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff),
2147 p);
2148 bfd_put_32 (output_bfd,
2149 SPARC_PLT_PIC_WORD1 + (val & 0x3ff),
2150 p + 4);
2151 bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8);
2152 }
2153 break;
2154
2155 case bfd_arch_m68k:
2156 if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0)
2157 abort ();
2158 bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p);
2159 bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2);
dc810e39 2160 bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6);
252b5132
RH
2161 r_address += 2;
2162 break;
2163
2164 default:
2165 abort ();
2166 }
2167
2168 /* We also need to add a jump table reloc, unless this is the
b34976b6 2169 result of a JMP_TBL reloc from PIC compiled code. */
252b5132
RH
2170 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2171 {
2172 BFD_ASSERT (h->dynindx >= 0);
2173 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
eea6121a 2174 < s->size);
252b5132
RH
2175 p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd);
2176 if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE)
2177 {
2178 struct reloc_std_external *srel;
2179
2180 srel = (struct reloc_std_external *) p;
2181 PUT_WORD (output_bfd, r_address, srel->r_address);
2182 if (bfd_header_big_endian (output_bfd))
2183 {
7b82c249
KH
2184 srel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2185 srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2186 srel->r_index[2] = (bfd_byte) (h->dynindx);
252b5132
RH
2187 srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG
2188 | RELOC_STD_BITS_JMPTABLE_BIG);
2189 }
2190 else
2191 {
7b82c249
KH
2192 srel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2193 srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
252b5132
RH
2194 srel->r_index[0] = (bfd_byte)h->dynindx;
2195 srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE
2196 | RELOC_STD_BITS_JMPTABLE_LITTLE);
2197 }
2198 }
2199 else
2200 {
2201 struct reloc_ext_external *erel;
2202
2203 erel = (struct reloc_ext_external *) p;
2204 PUT_WORD (output_bfd, r_address, erel->r_address);
2205 if (bfd_header_big_endian (output_bfd))
2206 {
7b82c249
KH
2207 erel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2208 erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
252b5132
RH
2209 erel->r_index[2] = (bfd_byte)h->dynindx;
2210 erel->r_type[0] =
2211 (RELOC_EXT_BITS_EXTERN_BIG
2212 | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG));
2213 }
2214 else
2215 {
7b82c249
KH
2216 erel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2217 erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
252b5132
RH
2218 erel->r_index[0] = (bfd_byte)h->dynindx;
2219 erel->r_type[0] =
2220 (RELOC_EXT_BITS_EXTERN_LITTLE
2221 | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2222 }
2223 PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend);
2224 }
2225
2226 ++s->reloc_count;
2227 }
2228 }
2229
2230 /* If this is not a dynamic symbol, we don't have to do anything
2231 else. We only check this after handling the PLT entry, because
2232 we can have a PLT entry for a nondynamic symbol when linking PIC
2233 compiled code from a regular object. */
2234 if (h->dynindx < 0)
b34976b6 2235 return TRUE;
252b5132
RH
2236
2237 switch (h->root.root.type)
2238 {
2239 default:
2240 case bfd_link_hash_new:
2241 abort ();
2242 /* Avoid variable not initialized warnings. */
b34976b6 2243 return TRUE;
252b5132
RH
2244 case bfd_link_hash_undefined:
2245 type = N_UNDF | N_EXT;
2246 val = 0;
2247 break;
2248 case bfd_link_hash_defined:
2249 case bfd_link_hash_defweak:
2250 {
2251 asection *sec;
2252 asection *output_section;
2253
2254 sec = h->root.root.u.def.section;
2255 output_section = sec->output_section;
2256 BFD_ASSERT (bfd_is_abs_section (output_section)
2257 || output_section->owner == output_bfd);
2258 if (h->plt_offset != 0
2259 && (h->flags & SUNOS_DEF_REGULAR) == 0)
2260 {
2261 type = N_UNDF | N_EXT;
2262 val = 0;
2263 }
2264 else
2265 {
2266 if (output_section == obj_textsec (output_bfd))
2267 type = (h->root.root.type == bfd_link_hash_defined
2268 ? N_TEXT
2269 : N_WEAKT);
2270 else if (output_section == obj_datasec (output_bfd))
2271 type = (h->root.root.type == bfd_link_hash_defined
2272 ? N_DATA
2273 : N_WEAKD);
2274 else if (output_section == obj_bsssec (output_bfd))
2275 type = (h->root.root.type == bfd_link_hash_defined
2276 ? N_BSS
2277 : N_WEAKB);
2278 else
2279 type = (h->root.root.type == bfd_link_hash_defined
2280 ? N_ABS
2281 : N_WEAKA);
2282 type |= N_EXT;
2283 val = (h->root.root.u.def.value
2284 + output_section->vma
2285 + sec->output_offset);
2286 }
2287 }
2288 break;
2289 case bfd_link_hash_common:
2290 type = N_UNDF | N_EXT;
2291 val = h->root.root.u.c.size;
2292 break;
2293 case bfd_link_hash_undefweak:
2294 type = N_WEAKU;
2295 val = 0;
2296 break;
2297 case bfd_link_hash_indirect:
2298 case bfd_link_hash_warning:
2299 /* FIXME: Ignore these for now. The circumstances under which
2300 they should be written out are not clear to me. */
b34976b6 2301 return TRUE;
252b5132
RH
2302 }
2303
2304 s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym");
2305 BFD_ASSERT (s != NULL);
2306 outsym = ((struct external_nlist *)
2307 (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE));
2308
dc810e39
AM
2309 H_PUT_8 (output_bfd, type, outsym->e_type);
2310 H_PUT_8 (output_bfd, 0, outsym->e_other);
252b5132
RH
2311
2312 /* FIXME: The native linker doesn't use 0 for desc. It seems to use
2313 one less than the desc value in the shared library, although that
2314 seems unlikely. */
dc810e39 2315 H_PUT_16 (output_bfd, 0, outsym->e_desc);
252b5132
RH
2316
2317 PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx);
2318 PUT_WORD (output_bfd, val, outsym->e_value);
2319
b34976b6 2320 return TRUE;
252b5132
RH
2321}
2322
2323/* This is called for each reloc against an external symbol. If this
2324 is a reloc which are are going to copy as a dynamic reloc, then
2325 copy it over, and tell the caller to not bother processing this
2326 reloc. */
2327
b34976b6 2328static bfd_boolean
116c20d2
NC
2329sunos_check_dynamic_reloc (struct bfd_link_info *info,
2330 bfd *input_bfd,
2331 asection *input_section,
2332 struct aout_link_hash_entry *harg,
2333 void * reloc,
2334 bfd_byte *contents ATTRIBUTE_UNUSED,
2335 bfd_boolean *skip,
2336 bfd_vma *relocationp)
252b5132
RH
2337{
2338 struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2339 bfd *dynobj;
b34976b6
AM
2340 bfd_boolean baserel;
2341 bfd_boolean jmptbl;
2342 bfd_boolean pcrel;
252b5132
RH
2343 asection *s;
2344 bfd_byte *p;
2345 long indx;
2346
b34976b6 2347 *skip = FALSE;
252b5132
RH
2348
2349 dynobj = sunos_hash_table (info)->dynobj;
2350
2351 if (h != NULL
2352 && h->plt_offset != 0
2353 && (info->shared
2354 || (h->flags & SUNOS_DEF_REGULAR) == 0))
2355 {
2356 asection *splt;
2357
2358 /* Redirect the relocation to the PLT entry. */
2359 splt = bfd_get_section_by_name (dynobj, ".plt");
2360 *relocationp = (splt->output_section->vma
2361 + splt->output_offset
2362 + h->plt_offset);
2363 }
2364
2365 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2366 {
2367 struct reloc_std_external *srel;
2368
2369 srel = (struct reloc_std_external *) reloc;
2370 if (bfd_header_big_endian (input_bfd))
2371 {
2372 baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2373 jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2374 pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2375 }
2376 else
2377 {
2378 baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2379 jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2380 pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2381 }
2382 }
2383 else
2384 {
2385 struct reloc_ext_external *erel;
2386 int r_type;
2387
2388 erel = (struct reloc_ext_external *) reloc;
2389 if (bfd_header_big_endian (input_bfd))
2390 r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2391 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2392 else
2393 r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2394 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2395 baserel = (r_type == RELOC_BASE10
2396 || r_type == RELOC_BASE13
2397 || r_type == RELOC_BASE22);
2398 jmptbl = r_type == RELOC_JMP_TBL;
2399 pcrel = (r_type == RELOC_DISP8
2400 || r_type == RELOC_DISP16
2401 || r_type == RELOC_DISP32
2402 || r_type == RELOC_WDISP30
2403 || r_type == RELOC_WDISP22);
2404 /* We don't consider the PC10 and PC22 types to be PC relative,
b34976b6 2405 because they are pcrel_offset. */
252b5132
RH
2406 }
2407
2408 if (baserel)
2409 {
2410 bfd_vma *got_offsetp;
2411 asection *sgot;
2412
2413 if (h != NULL)
2414 got_offsetp = &h->got_offset;
2415 else if (adata (input_bfd).local_got_offsets == NULL)
2416 got_offsetp = NULL;
2417 else
2418 {
2419 struct reloc_std_external *srel;
2420 int r_index;
2421
2422 srel = (struct reloc_std_external *) reloc;
2423 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2424 {
2425 if (bfd_header_big_endian (input_bfd))
2426 r_index = ((srel->r_index[0] << 16)
2427 | (srel->r_index[1] << 8)
2428 | srel->r_index[2]);
2429 else
2430 r_index = ((srel->r_index[2] << 16)
2431 | (srel->r_index[1] << 8)
2432 | srel->r_index[0]);
2433 }
2434 else
2435 {
2436 struct reloc_ext_external *erel;
2437
2438 erel = (struct reloc_ext_external *) reloc;
2439 if (bfd_header_big_endian (input_bfd))
2440 r_index = ((erel->r_index[0] << 16)
2441 | (erel->r_index[1] << 8)
2442 | erel->r_index[2]);
2443 else
2444 r_index = ((erel->r_index[2] << 16)
2445 | (erel->r_index[1] << 8)
2446 | erel->r_index[0]);
2447 }
2448
2449 got_offsetp = adata (input_bfd).local_got_offsets + r_index;
2450 }
2451
2452 BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0);
2453
2454 sgot = bfd_get_section_by_name (dynobj, ".got");
2455
2456 /* We set the least significant bit to indicate whether we have
2457 already initialized the GOT entry. */
2458 if ((*got_offsetp & 1) == 0)
2459 {
2460 if (h == NULL
2461 || (! info->shared
2462 && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
2463 || (h->flags & SUNOS_DEF_REGULAR) != 0)))
2464 PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp);
2465 else
2466 PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp);
2467
2468 if (info->shared
2469 || (h != NULL
2470 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
2471 && (h->flags & SUNOS_DEF_REGULAR) == 0))
2472 {
2473 /* We need to create a GLOB_DAT or 32 reloc to tell the
b34976b6 2474 dynamic linker to fill in this entry in the table. */
252b5132
RH
2475
2476 s = bfd_get_section_by_name (dynobj, ".dynrel");
2477 BFD_ASSERT (s != NULL);
2478 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
eea6121a 2479 < s->size);
252b5132
RH
2480
2481 p = (s->contents
2482 + s->reloc_count * obj_reloc_entry_size (dynobj));
2483
2484 if (h != NULL)
2485 indx = h->dynindx;
2486 else
2487 indx = 0;
2488
2489 if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2490 {
2491 struct reloc_std_external *srel;
2492
2493 srel = (struct reloc_std_external *) p;
2494 PUT_WORD (dynobj,
2495 (*got_offsetp
2496 + sgot->output_section->vma
2497 + sgot->output_offset),
2498 srel->r_address);
2499 if (bfd_header_big_endian (dynobj))
2500 {
7b82c249
KH
2501 srel->r_index[0] = (bfd_byte) (indx >> 16);
2502 srel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2503 srel->r_index[2] = (bfd_byte)indx;
2504 if (h == NULL)
2505 srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG;
2506 else
2507 srel->r_type[0] =
2508 (RELOC_STD_BITS_EXTERN_BIG
2509 | RELOC_STD_BITS_BASEREL_BIG
2510 | RELOC_STD_BITS_RELATIVE_BIG
2511 | (2 << RELOC_STD_BITS_LENGTH_SH_BIG));
2512 }
2513 else
2514 {
7b82c249
KH
2515 srel->r_index[2] = (bfd_byte) (indx >> 16);
2516 srel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2517 srel->r_index[0] = (bfd_byte)indx;
2518 if (h == NULL)
2519 srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE;
2520 else
2521 srel->r_type[0] =
2522 (RELOC_STD_BITS_EXTERN_LITTLE
2523 | RELOC_STD_BITS_BASEREL_LITTLE
2524 | RELOC_STD_BITS_RELATIVE_LITTLE
2525 | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2526 }
2527 }
2528 else
2529 {
2530 struct reloc_ext_external *erel;
2531
2532 erel = (struct reloc_ext_external *) p;
2533 PUT_WORD (dynobj,
2534 (*got_offsetp
2535 + sgot->output_section->vma
2536 + sgot->output_offset),
2537 erel->r_address);
2538 if (bfd_header_big_endian (dynobj))
2539 {
7b82c249
KH
2540 erel->r_index[0] = (bfd_byte) (indx >> 16);
2541 erel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2542 erel->r_index[2] = (bfd_byte)indx;
2543 if (h == NULL)
2544 erel->r_type[0] =
2545 RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG;
2546 else
2547 erel->r_type[0] =
2548 (RELOC_EXT_BITS_EXTERN_BIG
2549 | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG));
2550 }
2551 else
2552 {
7b82c249
KH
2553 erel->r_index[2] = (bfd_byte) (indx >> 16);
2554 erel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2555 erel->r_index[0] = (bfd_byte)indx;
2556 if (h == NULL)
2557 erel->r_type[0] =
2558 RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE;
2559 else
2560 erel->r_type[0] =
2561 (RELOC_EXT_BITS_EXTERN_LITTLE
2562 | (RELOC_GLOB_DAT
2563 << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2564 }
2565 PUT_WORD (dynobj, 0, erel->r_addend);
2566 }
2567
2568 ++s->reloc_count;
2569 }
2570
2571 *got_offsetp |= 1;
2572 }
2573
2574 *relocationp = (sgot->vma
dc810e39 2575 + (*got_offsetp &~ (bfd_vma) 1)
252b5132
RH
2576 - sunos_hash_table (info)->got_base);
2577
2578 /* There is nothing else to do for a base relative reloc. */
b34976b6 2579 return TRUE;
252b5132
RH
2580 }
2581
2582 if (! sunos_hash_table (info)->dynamic_sections_needed)
b34976b6 2583 return TRUE;
252b5132
RH
2584 if (! info->shared)
2585 {
2586 if (h == NULL
2587 || h->dynindx == -1
2588 || h->root.root.type != bfd_link_hash_undefined
2589 || (h->flags & SUNOS_DEF_REGULAR) != 0
2590 || (h->flags & SUNOS_DEF_DYNAMIC) == 0
2591 || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0)
b34976b6 2592 return TRUE;
252b5132
RH
2593 }
2594 else
2595 {
2596 if (h != NULL
2597 && (h->dynindx == -1
2598 || jmptbl
2599 || strcmp (h->root.root.root.string,
2600 "__GLOBAL_OFFSET_TABLE_") == 0))
b34976b6 2601 return TRUE;
252b5132
RH
2602 }
2603
2604 /* It looks like this is a reloc we are supposed to copy. */
2605
2606 s = bfd_get_section_by_name (dynobj, ".dynrel");
2607 BFD_ASSERT (s != NULL);
eea6121a 2608 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size);
252b5132
RH
2609
2610 p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj);
2611
2612 /* Copy the reloc over. */
2613 memcpy (p, reloc, obj_reloc_entry_size (dynobj));
2614
2615 if (h != NULL)
2616 indx = h->dynindx;
2617 else
2618 indx = 0;
2619
2620 /* Adjust the address and symbol index. */
2621 if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2622 {
2623 struct reloc_std_external *srel;
2624
2625 srel = (struct reloc_std_external *) p;
2626 PUT_WORD (dynobj,
2627 (GET_WORD (dynobj, srel->r_address)
2628 + input_section->output_section->vma
2629 + input_section->output_offset),
2630 srel->r_address);
2631 if (bfd_header_big_endian (dynobj))
2632 {
7b82c249
KH
2633 srel->r_index[0] = (bfd_byte) (indx >> 16);
2634 srel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2635 srel->r_index[2] = (bfd_byte)indx;
2636 }
2637 else
2638 {
7b82c249
KH
2639 srel->r_index[2] = (bfd_byte) (indx >> 16);
2640 srel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2641 srel->r_index[0] = (bfd_byte)indx;
2642 }
2643 /* FIXME: We may have to change the addend for a PC relative
b34976b6 2644 reloc. */
252b5132
RH
2645 }
2646 else
2647 {
2648 struct reloc_ext_external *erel;
2649
2650 erel = (struct reloc_ext_external *) p;
2651 PUT_WORD (dynobj,
2652 (GET_WORD (dynobj, erel->r_address)
2653 + input_section->output_section->vma
2654 + input_section->output_offset),
2655 erel->r_address);
2656 if (bfd_header_big_endian (dynobj))
2657 {
7b82c249
KH
2658 erel->r_index[0] = (bfd_byte) (indx >> 16);
2659 erel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2660 erel->r_index[2] = (bfd_byte)indx;
2661 }
2662 else
2663 {
7b82c249
KH
2664 erel->r_index[2] = (bfd_byte) (indx >> 16);
2665 erel->r_index[1] = (bfd_byte) (indx >> 8);
252b5132
RH
2666 erel->r_index[0] = (bfd_byte)indx;
2667 }
2668 if (pcrel && h != NULL)
2669 {
2670 /* Adjust the addend for the change in address. */
2671 PUT_WORD (dynobj,
2672 (GET_WORD (dynobj, erel->r_addend)
2673 - (input_section->output_section->vma
2674 + input_section->output_offset
2675 - input_section->vma)),
2676 erel->r_addend);
2677 }
2678 }
2679
2680 ++s->reloc_count;
2681
2682 if (h != NULL)
b34976b6 2683 *skip = TRUE;
252b5132 2684
b34976b6 2685 return TRUE;
252b5132
RH
2686}
2687
2688/* Finish up the dynamic linking information. */
2689
b34976b6 2690static bfd_boolean
116c20d2 2691sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info)
252b5132
RH
2692{
2693 bfd *dynobj;
2694 asection *o;
2695 asection *s;
2696 asection *sdyn;
2697
2698 if (! sunos_hash_table (info)->dynamic_sections_needed
2699 && ! sunos_hash_table (info)->got_needed)
b34976b6 2700 return TRUE;
252b5132
RH
2701
2702 dynobj = sunos_hash_table (info)->dynobj;
2703
2704 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2705 BFD_ASSERT (sdyn != NULL);
2706
2707 /* Finish up the .need section. The linker emulation code filled it
2708 in, but with offsets from the start of the section instead of
2709 real addresses. Now that we know the section location, we can
2710 fill in the final values. */
2711 s = bfd_get_section_by_name (dynobj, ".need");
eea6121a 2712 if (s != NULL && s->size != 0)
252b5132
RH
2713 {
2714 file_ptr filepos;
2715 bfd_byte *p;
2716
2717 filepos = s->output_section->filepos + s->output_offset;
2718 p = s->contents;
2719 while (1)
2720 {
2721 bfd_vma val;
2722
2723 PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p);
2724 val = GET_WORD (dynobj, p + 12);
2725 if (val == 0)
2726 break;
2727 PUT_WORD (dynobj, val + filepos, p + 12);
2728 p += 16;
2729 }
2730 }
2731
2732 /* The first entry in the .got section is the address of the
2733 dynamic information, unless this is a shared library. */
2734 s = bfd_get_section_by_name (dynobj, ".got");
2735 BFD_ASSERT (s != NULL);
eea6121a 2736 if (info->shared || sdyn->size == 0)
252b5132
RH
2737 PUT_WORD (dynobj, 0, s->contents);
2738 else
2739 PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset,
2740 s->contents);
2741
2742 for (o = dynobj->sections; o != NULL; o = o->next)
2743 {
2744 if ((o->flags & SEC_HAS_CONTENTS) != 0
2745 && o->contents != NULL)
2746 {
2747 BFD_ASSERT (o->output_section != NULL
2748 && o->output_section->owner == abfd);
2749 if (! bfd_set_section_contents (abfd, o->output_section,
dc810e39
AM
2750 o->contents,
2751 (file_ptr) o->output_offset,
eea6121a 2752 o->size))
b34976b6 2753 return FALSE;
252b5132
RH
2754 }
2755 }
2756
eea6121a 2757 if (sdyn->size > 0)
252b5132
RH
2758 {
2759 struct external_sun4_dynamic esd;
2760 struct external_sun4_dynamic_link esdl;
dc810e39 2761 file_ptr pos;
252b5132
RH
2762
2763 /* Finish up the dynamic link information. */
2764 PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version);
2765 PUT_WORD (dynobj,
2766 sdyn->output_section->vma + sdyn->output_offset + sizeof esd,
2767 esd.ldd);
2768 PUT_WORD (dynobj,
2769 (sdyn->output_section->vma
2770 + sdyn->output_offset
2771 + sizeof esd
2772 + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE),
2773 esd.ld);
2774
2775 if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd,
dc810e39
AM
2776 (file_ptr) sdyn->output_offset,
2777 (bfd_size_type) sizeof esd))
b34976b6 2778 return FALSE;
252b5132
RH
2779
2780 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded);
2781
2782 s = bfd_get_section_by_name (dynobj, ".need");
eea6121a 2783 if (s == NULL || s->size == 0)
252b5132
RH
2784 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need);
2785 else
2786 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2787 esdl.ld_need);
2788
2789 s = bfd_get_section_by_name (dynobj, ".rules");
eea6121a 2790 if (s == NULL || s->size == 0)
252b5132
RH
2791 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules);
2792 else
2793 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2794 esdl.ld_rules);
2795
2796 s = bfd_get_section_by_name (dynobj, ".got");
2797 BFD_ASSERT (s != NULL);
2798 PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2799 esdl.ld_got);
2800
2801 s = bfd_get_section_by_name (dynobj, ".plt");
2802 BFD_ASSERT (s != NULL);
2803 PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2804 esdl.ld_plt);
eea6121a 2805 PUT_WORD (dynobj, s->size, esdl.ld_plt_sz);
252b5132
RH
2806
2807 s = bfd_get_section_by_name (dynobj, ".dynrel");
2808 BFD_ASSERT (s != NULL);
2809 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
eea6121a 2810 == s->size);
252b5132
RH
2811 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2812 esdl.ld_rel);
2813
2814 s = bfd_get_section_by_name (dynobj, ".hash");
2815 BFD_ASSERT (s != NULL);
2816 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2817 esdl.ld_hash);
2818
2819 s = bfd_get_section_by_name (dynobj, ".dynsym");
2820 BFD_ASSERT (s != NULL);
2821 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2822 esdl.ld_stab);
2823
2824 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash);
2825
2826 PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount,
2827 esdl.ld_buckets);
2828
2829 s = bfd_get_section_by_name (dynobj, ".dynstr");
2830 BFD_ASSERT (s != NULL);
2831 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2832 esdl.ld_symbols);
eea6121a 2833 PUT_WORD (dynobj, s->size, esdl.ld_symb_size);
252b5132
RH
2834
2835 /* The size of the text area is the size of the .text section
2836 rounded up to a page boundary. FIXME: Should the page size be
2837 conditional on something? */
2838 PUT_WORD (dynobj,
eea6121a 2839 BFD_ALIGN (obj_textsec (abfd)->size, 0x2000),
252b5132 2840 esdl.ld_text);
7b82c249 2841
dc810e39
AM
2842 pos = sdyn->output_offset;
2843 pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE;
252b5132 2844 if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl,
dc810e39 2845 pos, (bfd_size_type) sizeof esdl))
b34976b6 2846 return FALSE;
252b5132
RH
2847
2848 abfd->flags |= DYNAMIC;
2849 }
2850
b34976b6 2851 return TRUE;
252b5132 2852}
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